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Sample records for elements sang negari

  1. GAYA PENYUTRADARAAN IMPRESIONISME PADA FILM SANG KIAI

    OpenAIRE

    Wegig Widiyatmaka; NRA. Candra DA.

    2016-01-01

    The research studied about movie entitled Sang Kiai created by Rako Prijanto. The movie achieved predicate of the best film and the best director in the Indonesia Film Festival 2013 in Semarang. Research problems in the study focused on style of directing “impressionism” in Sang Kiai movie with two aspects namely narrative and cinematic. Both aspects can used for reference in understanding of narrating a fiction movie. The objective of the research was to find out style of impressionism direc...

  2. DIGITAL PRESERVATION OF THE QUON SANG LUNG LAUNDRY BUILDING, FORT MACLEOD, ALBERTA

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    P. Dawson

    2017-08-01

    Full Text Available This paper describes the results of an emergency recording and archiving of a historic structure in Southern Alberta and explores the lessons learned. Digital recording of the Quon Sang Lung Laundry building in Fort Macleod, Alberta, was a joint initiative between Alberta Culture and Tourism and the University of Calgary. The Quon Sang Lung Laundry was a boomtown-style wood structure situated in the Fort Macleod Provincial Historic Area, Alberta. Built in the mid-1800s, the structure was one of the four buildings comprising Fort Macleod’s Chinatown. Its association with Chinese immigration, settlement, and emergence of Chinese-owned businesses in early twentieth-century Alberta, made the Quon Sang Lung Laundry a unique and very significant historic resource. In recent years, a condition assessment of the structure indicated that the building was not safe and that the extent of the instability could lead to a sudden collapse. In response, Alberta Culture and Tourism engaged the Departments of Anthropology and Archaeology and Geomatics Engineering from the University of Calgary, to digitally preserve the laundry building. A complete survey including the laser scanning of all the remaining elements of the original structure, was undertaken. Through digital modeling, the work guarantees that a three-dimensional representation of the building is available for future use. This includes accurate 3D renders of the exterior and interior spaces and a collection of architectural drawings comprising floor plans, sections, and elevations.

  3. Digital Preservation of the Quon Sang Lung Laundry Building, Fort Macleod, Alberta

    Science.gov (United States)

    Dawson, P.; Baradaran, F.; Jahraus, A.; Rubalcava, E.; Farrokhi, A.; Robinson, C.

    2017-08-01

    This paper describes the results of an emergency recording and archiving of a historic structure in Southern Alberta and explores the lessons learned. Digital recording of the Quon Sang Lung Laundry building in Fort Macleod, Alberta, was a joint initiative between Alberta Culture and Tourism and the University of Calgary. The Quon Sang Lung Laundry was a boomtown-style wood structure situated in the Fort Macleod Provincial Historic Area, Alberta. Built in the mid-1800s, the structure was one of the four buildings comprising Fort Macleod's Chinatown. Its association with Chinese immigration, settlement, and emergence of Chinese-owned businesses in early twentieth-century Alberta, made the Quon Sang Lung Laundry a unique and very significant historic resource. In recent years, a condition assessment of the structure indicated that the building was not safe and that the extent of the instability could lead to a sudden collapse. In response, Alberta Culture and Tourism engaged the Departments of Anthropology and Archaeology and Geomatics Engineering from the University of Calgary, to digitally preserve the laundry building. A complete survey including the laser scanning of all the remaining elements of the original structure, was undertaken. Through digital modeling, the work guarantees that a three-dimensional representation of the building is available for future use. This includes accurate 3D renders of the exterior and interior spaces and a collection of architectural drawings comprising floor plans, sections, and elevations.

  4. Kajian Aspek Fotografis dalam Tehnik Olah Digital Poster Film “ Sang Pemimpi ”

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    Noor Latif CM

    2011-04-01

    Full Text Available As the advancement of digital imaging technology, this urges internal actors to be more accurate and explorative in producing visual communication work with photography element and digital touching process. Digital process ability with no photographical ability will produce raw and anomaly visual work of art. Besides, audience is smarter and more appreciative towards quality of visual appearance in several modern communication media. Film poster of Sang Pemimpi is a case reflection of general digital in visual communication work that has gap among communication product content according to the brand of the film. Photography element composition is melted with bondless pile among the objects. Logical photography as bonding bridge of visual logic is weak in execution; where we could see it has less digital process commercial market need with the supporting resources. 

  5. "Tallinn Jazz Weekend" tõi kultuuripealinna Euroopa jazzielu korraldajad / Marje Ingel, Joosep Sang

    Index Scriptorium Estoniae

    Ingel, Marje

    2011-01-01

    Jazziorganisatsioonist Europe Jazz Network ja selle aastakonverentsist Tallinnas ning J. Sang selle raames Von Krahli teatris toimunud Tallinn Jazz Weekendi eesti jazzmuusika showcase-festivalist lühidalt

  6. Geochronology, radiogenic isotope geochemistry, and petrogenesis of Sang bast Paleo-tethys monzogranite, Mashhad, Iran

    International Nuclear Information System (INIS)

    Karimpour, M. H.; Farmer, G.L.; Stern, C.R.

    2010-01-01

    The study area is located in northeastern Iran (south of Mashhad). Paleo-Tethys Ocean opened during Silurian time and subduction under Turan plate was started in Late Devonian. By Late Triassic (225 Ma) there was no Paleo-Tethys left on an Iranian transect, therefore Turan plate obducted over Iran Plate. Two stages of low grade regional metamorphism are exposed, that are related to Hercynian (Late Paleozoic) and Cimmerian (Jurassic) oro genies. The Paleo-Tethys remnants (meta-ophiolite and meta-flysch) were intruded by Sang bast monzogranite. Chemically, monzogranite is moderately peraluminous S-type granitoid. It has low values of magnetic susceptibility [(5 to 11) * 10 -5 SI] therefore it is classified as belonging to the ilmenite-series of reduced type granitoids. Monzogranite is characterized by strong light rare earth element enrichment and less low heavy rare earth element. All samples have very small negative Eu anomalies (Eu/Eu * = 0.62 to 0.88). Total rare earth element content of monzogranite is between 212-481 ppm. The result of U-Pb zircon age dating of monzogranite is 201.3 ± 3.6 Ma (Upper Triassic, Rhaetian time). The initial 87 Sr/ 86 Sr and 143 Nd/ 144 Nd ratios for monzogranite is (0.706776 and 0.512219) when recalculated to an age of 201 Ma, consistent with the new radiometric. The initial 87 Sr/ 86 Sr and 143 Nd/ 144 Nd ratios for slate is (0.720613 and 0.511601) respectively when recalculated to an age of 201 Ma, consistent with the new radiometric results. Initial εNd isotope values for monzogranite is -3.13 and the slate is -15.19. Based on radiogenic isotopic data and rare earth element monzogranite magma originated either from lower continental crust which was very different from slate or it is originated from mantle and contaminated in continental crust during ascending.

  7. Seroprevalence des anticorps anti-HBc chez les donneurs de sang ...

    African Journals Online (AJOL)

    'hépatite virale demeure une priorité pour les centres de qualification des produits sanguins labiles au Togo. Objectif: Déterminer la séroprévalence des anticorps anti-HBc au sein des donneurs de sang en vue d'estimer le niveau de risque ...

  8. En integrativ terapeutisk anvendelse af sang med udgangspunkt i neuropsykologiske, psykofysiologiske og psykodynamiske teorier

    DEFF Research Database (Denmark)

    Ridder, Hanne Mette Ochsner

    2007-01-01

    Hvordan kan terapeutiske forløb tilrettelægges så klienter med svære neurologiske forstyrrelser, fx mennesker med en demenssygdom, kan opnå en form for indsigt og terapeutisk forandring? Dette spørgsmål søges besvaret ved at beskrive anvendelsen af sang i den terapeutiske relation ud fra neuropsy...

  9. Narasi Cahaya Kearifan Lokal Dalam Film Sang Pencerah Karya Hanung Bramantyo

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    Dyah Gayatri Puspitasari

    2017-01-01

    ABSTRAK   Narasi merupakan unsur penting dalam film. Urutannya mengandung logika tertentu yang berkaitan dengan makna cerita film. Film dapat dikatakan sebagai narasi yang merep- resentasikan realitas. Namun karena film merupakan gubahan sutradara, maka urutan peris- tiwa itu tentunya sudah dibubuhi pesan atau niatan tertentu sutradara. Dengan mengambil film Sang Pencerah karya Hanung Bramantyo sebagai studi kasus, dilakukan identifikasi pesan dan makna yang termuat di dalam film tersebut. Kajian ini menggunakan metode analisis teks visual naratif dengan teori narasi Genette dan semiotika Peirce sebagai pembantu. Dari hasil analisis struktur narasiditemukan bahwa Sang Pencerah merupakan film alur tiga babak dengan pola linier. Aspek cahaya yang dikorelasikan dengan makna pencerahan, tampak dimanfaat- kan sebagai pengikat rangkaian inti cerita. Melalui analisis berbagai penanda visual selanjutnya ditemukan bahwa gagasan pembaharuan (pencerahan yang diketengahkan sutradara dalam film ini merupakanrasionalitas modernisme Barat versus Ahmad Dahlan. Sebuah rasionalitas yang mengejawantahkan kesantunan dan kearifan lokal sebagai keutuhan jati diri pengimbang kebaharuan.   Kata kunci: narasi, film, cahaya, pesan, modernisme

  10. Application des spots de sang séché en pharmacologie et en toxicologie

    OpenAIRE

    Deglon, Julien

    2012-01-01

    Dans le domaine de l’analyse biomédicale, le sang est de loin la matrice la plus couramment utilisée. Son obtention s’effectue traditionnellement par une ponction veineuse au niveau du bras. Un mode de prélèvement alternatif a fait son apparition dans les années 60 : les spots de sang séché sur papier filtre ou dried blood spots (DBS). Bien que les avantages (simplicité, micro volumes, transport, stockage et sécurité) aient été clairement identifiés, ce mode de prélèvements est longtemps rest...

  11. TINJAUAN TERHADAP PENERAPAN AKUNTANSI PERTANGGUNGJAWABAN DALAM PENILAIAN KINERJA PUSAT LABA PADA PT SANG HYANG SERI (PERSERO KANTOR

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    Kasmaria -

    2017-02-01

    The aim of this research was to determine how the application of accounting in the performance appraisal profit center manager at PT Sang Hyang Seri (Persero Regional Office VI Sidrap. The results showed that the accounting is applied PT Sang Hyang Seri (Persero Regional Office VI Sidrap have been useful in evaluating performance profit center manager. This is supported by the fulfillment of the terms of accounting and accountability reports profit center

  12. 1.6. The kinetics of hydrochloric acid decomposition of argillite of Chashma-Sang Deposit

    International Nuclear Information System (INIS)

    Mirsaidov, U.M.; Mirzoev, D.Kh.; Boboev, Kh.E.

    2016-01-01

    Present article of book is devoted to kinetics of hydrochloric acid decomposition of argillite of Chashma-Sang Deposit. It was defined that with temperature increasing the extraction rate of Al_2O_3 and Fe_2O_3 increases. The dependence of extraction rate of Al_2O_3 and Fe_2O_3 on process duration at hydrochloric acid decomposition of argillite was studied. The activation energy of the process was defined.

  13. Sulfuric acid dissolution of the Chashma-Sang deposit's green clays

    International Nuclear Information System (INIS)

    Mirzoev, D.Kh.; Boboev, Kh.E.; Pulatov, M.S.; Mirsaidov, U.M.

    2005-01-01

    Present article is presenting the results of the roentgen phase, thermodynamic and physical-chemical investigations of the green clays of the Chashma-Sang deposit of the Republic of Tajikistan. It is presented mineralogical and chemical composition of the mineral raw materials. Kinetic of decomposition of the oxides of aluminum and iron on temperature, time and concentration of the sulfuric acid has been investigated

  14. Absolut sang

    DEFF Research Database (Denmark)

    Parly, Nila Charlotte

    En række analytiske gennemgange af de kvindelige hovedpartier i Richard Wagners værker fra "Den flyvende Hollænder" til "Parsifal". Med afsæt i Carl Dahlhaus' og Carolyn Abbates teorier fokuseres der på orkester- og sangstemmernes klanglige og melodiske betydning for værkernes komplekse dramaturg...

  15. Blood group genotyping Genotipagem de grupos sangüíneos

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    Lilian Castilho

    2004-01-01

    Full Text Available Accurate phenotyping of red blood cells (RBCs can be difficult in transfusion-dependent patients such as those with thalassemia and sickle cells anemia because of the presence of previously transfused RBCs in the patient's circulation. Recently, the molecular basis associated with the expression of many blood group antigens was established. This allowed the development of a plethora of polymerase chain reaction-based tests for identification of the blood group antigens by testing DNA. The determination of blood group polymorphism at the genomic level facilitates the resolution of clinical problems that cannot be addressed by hemagglutination. They are useful to (a determine antigen types for which currently available antibodies are weakly reactive; (b type patients who have been recently transfused; (c identify fetuses at risk for hemolytic disease of the newborn; and (d to increase the reliability of repositories of antigen negative RBCs for transfusion. It is important to note that PCR based assays are prone to different types of errors that those observed with hemagglutination assays. For instance, contamination with amplified products may lead to false positive test results. In addition, the identification of a particular genotype does not necessarily mean that the antigen will be expressed on the RBC membrane.Os antígenos eritrocitários são herdados geneticamente e definidos por seqüências de aminoácidos específicos constituindo uma proteína ou por carboidratos ligados a estas proteínas ou à lipídios. A diversidade dos antígenos de grupos sangüíneos, como para qualquer outro traço biológico, encontra-se ao nível do gene. Existem atualmente mais de 250 antígenos eritrocitários que se encontram distribuídos em 29 sistemas de grupos sangüíneos, de acordo com a Nomenclatura da Sociedade Internacional de Transfusão Sangüínea (ISBT. Os genes que codificam 28 dos 29 sistemas de grupos sangüíneos já foram clonados e seq

  16. Effect of Herbal Acupuncture with Sang-hwang(Phellinus linteus on High Fat Diet-induced Obesity in Rats

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    Ji Hyun Kim

    2004-02-01

    Full Text Available Acupuncture has fairly good weight-reducing effect in treating simple obesity due to the neuroendocrine regulation. In this study, the anti-obesity effects of herbal acupuncture (HA with Sang-hwang (Phellinus linteus at Fuai (SP16 were investigated in the rat fed on high-fat (HF diet. Sang-hwang mushroom has been proven to have anti-carcinogenic effects and Sang-hwang extracts are highly effective in treatment and preventive treatment of AIDS, diabetes and high blood-pressure. To determine whether the Sang-hwang herbal acupuncture may have the anti-obesity effect, male Sprague-Dawley (4-wk-old rats were fed a HF diet for 5 wk, which produced significant weight gain compared to rats were fed a normal diet, and then herbal acupuncture were treated for 3 wk in HF diet group. The body weight, food consumption, food effeciency ratio (FER, body fat mass, plasma nitric oxide (NO were investigated in rats fed on normal diet, HF diet, and HF diet with HA (HF-diet-HA groups. NO has been proposed to be involved in the regulation of food intake. In addition, the expression of appetite peptides such as orexigenic peptide neuropeptide Y (NPY and the anorectic peptide cholecystokinin (CCK were observed in the hypothalamus. HF-HA group reduced body weight gain, FER, body fat contents and NO concentration compared to HF diet group. The expression of NPY was reduced in arcuate nucleus (ARC, and CCK was increased in the paraventricular nucleus (PVN after treatment of HA. In conclusion, Sang-hwang HA reduced adipocity, plasma NO and hypothalamic NPY, but increased CCK expression in the HF diet-induced obesity rat, therefore HA may have anti-obesity action through regulating body weight and appetite peptide of the central nervous system.

  17. Controverses institutionnelles et sociales autour du sang placentaire recueilli à des fins thérapeutiques1

    OpenAIRE

    Boileau, Claire

    2003-01-01

    Dans cet article, nous proposons d’exposer les résultats d’une recherche en anthropologie sociale et culturelle portant sur les enjeux du prélèvement de sang placentaire. Ce sang, riche en cellules souches, est prélevé au moment de l’accouchement sur des femmes ayant consenti au don. Il est ensuite traité puis stocké en attendant d’être greffé à des patients leucémiques. Appelé à se développer dans les années à venir, le prélèvement de cellules souches rencontre des difficultés de recueil non...

  18. Diversity, threats and conservation of catfish fauna of the Krishna River, Sangli District, Maharashtra, India

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    S.M. Kumbar

    2014-01-01

    Full Text Available The diversity of freshwater catfish species of the Krishna River, Sangli District was studied from June 2009 to July 2012. The study area covered 105km from Karad City where the Koyna tributary joins the Krishna River up to Mhaishal, the state border of Maharashtra. It was divided into three streams for convenience, i.e., the upper stream starts from Karad and goes up to Takari, the middle stream from Takari to Bhilawadi and downstream from Bhilawadi to Mhaishal. A total of 13 species of catfish belonging to five families and 10 genera were recorded. The Bagridae family was dominant with six species, whereas Siluridae, Schilbidae and Clariidae had two species each and Sisoridae with one species. We have provided range extension for an endemic and threatened sisorid catfish Glyptothorax poonaensis. The occurrence and distribution of catfishes was more or less equal in number along the study area. The maximum number of species recorded was nine from the upper stream, whereas the middle and down streams had eight and seven species respectively. The distribution of catfish along the Krishna River system may be due to the slow and steady state water movement and its width that ensure the continuous availability of nutrition. It is suggested that the Krishna River would be a suitable habitat for the conservation of freshwater catfish if the threats are minimized.

  19. Blood cell attachment to root surfaces treated with EDTA gel Adesão de células sangüíneas a superfícies radiculares tratadas com gel de EDTA

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    Fábio Renato Manzolli Leite

    2005-06-01

    Full Text Available Root debridement generates a smear layer which contains microorganisms and toxins that could interfere in periodontal healing. For this reason, different substances have been used to remove it and to expose collagen fibers at the tooth surface. Blood element adhesion to demineralized roots and clot stabilization by collagen fibers are extremely important for the success of periodontal surgery. The aim of this study was to evaluate the different patterns of blood element adsorption and adhesion to root surfaces only irrigated with distilled water and after application of a manipulated or an industrialized EDTA gel. Thirty samples were planed, equally divided into three groups and treated with distilled water (control, a manipulated EDTA gel or an industrialized one. Immediately after, samples were exposed to fresh blood and prepared for scanning electron microscopy. Untreated planed dentin presented the best results with blood cells entrapped in a thick web of fibrin. In the manipulated EDTA group, the web of fibrin was thick with sparse blood elements. The worst result was seen with the industrialized EDTA group, in which no blood elements could be seen. Statistical difference was obtained between control and industrialized EDTA groups. Surfaces only irrigated presented the most organized fibrin network and cell entrapment.A raspagem gera "smear layer", a qual contém microrganismos e toxinas que podem interferir no reparo periodontal. Por esse motivo, diferentes substâncias têm sido empregadas para remover esta camada e expor fibras colágenas da superfície dental. A adesão de elementos sangüíneos a superfícies radiculares desmineralizadas e a estabilização do colágeno pelas fibras colágenas são de extrema importância no sucesso da cirurgia periodontal. O objetivo deste estudo foi avaliar os diferentes padrões de adsorção e adesão de elementos sangüíneos a superfícies radiculares apenas irrigadas com água destilada e ap

  20. PEMBERIAN BONUS KEPADA PEKERJA DI PT. SANG HYANG SERI (PERSERO DALAM RANGKA MENINGKATKAN PRODUKTIVITAS KERJA DITINJAU DARI UNDANG-UNDANG NOMOR 13 TAHUN 2003 TENTANG KETENAGAKERJAAN

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    Rani Apriani, S.E., S.H., M.H.

    2016-05-01

    Full Text Available Workers primary motivation to do a job is to earn wages as agreed on the contract, but sometimes, the wages has some issue, one of which is when thethe worker felt that they already produce the job exceed the standard worker. Bonus classified as non-wage income provided by the company in order to encourage workers to be more discipline, industrious, productive, and increase the workers earning in PT. Sang Hyang Seri. The purpose of this research was to examine the rule used by PT. Sang Hyang Seri when giving bonuses to increase productivity and to examine the bonus implementation in PT. Sang Hyang Seri comply with Act Number 3 on 2013 related with employment.

  1. Seismic test of a full scale model of five-story stone Pagoda of Sang-Gye-Sa

    International Nuclear Information System (INIS)

    Kim, J. K.; Park, C. U.; Jung, C. K.; Ryu, H.; Fujita, Kaori

    1999-01-01

    There occurred a moderate size earthquake of M=5 at Whagae-Myun, Hadong-Gun, Kyongsangnam-Do of Korea. It caused severe damage to the buildings and other structures in Sang-Gye-Sa, a famous and beautiful Buddhist Temple. The 5-story stone pagoda was standing in front of Keumdang. The top component tipped over and fell to the ground during the earthquake. In order to have accurate and quantitative estimate of the intensity of earthquake, a full-scale replica is made through rigorous verification process. The completed model was mounted on the shaking table and subjected to the seismic tests. It was observed that the top component overturned at 0.16 G of EPGA when the NS component of the 1940 El Centro earthquake records was used as the input motion. A brief history of this project is presented and important test results are reported and their implication is discussed

  2. New data on the epigraphy of Campo Real/Fillera (Sos del Rey Católico-Sangüesa

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    Javier ANDREU PINTADO

    2010-07-01

    Full Text Available The aim of this paper is to present the conclusions of two new epigraphic autopsies over two latin inscriptions –unpublished the first one, the second already known but here for the first time reviewed– found in the archaeological site of Campo Real/Fillera (Sos del Rey Católico-Sangüesa, in the northeast part of ancient Vascones’ territory. Some new archaeological materials related with the history of the monumentalization process of this ancient ciuitas are also presented: specially an spectacular funerary osteotheca made of stone with glass case, an unicum in the archeology of the death in the North-East part of the Iberian Peninsula. The paper is completed with a paleoanthropological and geological characterization of some of the most important evidences presented (including two pieces of green “campán” and turkish marble.

  3. Proses Individuasi Carl Gustav Jung pada Tokoh Erika Kohut dalam Novel Sang Guru Piano Karya Elfriede Jelinek

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    M. Oktavia Vidiyanti

    2007-12-01

    Full Text Available A personality structure that appears in Erika is similar to one of an important part of Carl Gustav Jung psychology. Jung states that personality is a psiko that covers consciousness and unconsciousness. This psiko will develop to be a stable unity. If every system develops in every individual absolutely, so a health and integrated personality will be achieved. That process in Jung is known as a self­ individualized process. The aim of individualism is a self­achievement. Individual is not only as a psiko centre but also as a representation of the whole individual that unites consciousness and unconsciousness. It is like the character "Erika Kohut" in the novel "Sang Guru Piano".

  4. Carence en fer, anémie et anémie ferriprive chez les donneurs de sang à Kinshasa, République Démocratique du Congo

    Science.gov (United States)

    Nzengu-Lukusa, Franck; Yuma-Ramazani, Sylvain; Sokolua-Mvika, Eddy; Dilu-Keti, Angèle; Malenga-Nkanga, Blanchard; Shuli, Jean Baptiste; Nzongola-Nkasu, Donatien Kayembe; Mbayo-Kalumbu, Ferdinand; Ahuka-Mundeke, Steve

    2016-01-01

    Introduction En République Démocratique du Congo (RDC), plus d'un million de don de sang ont été réalisés entre 2007 et 2011. Cependant, aucun bilan portant sur la carence en fer et l'anémie ferriprive, conséquence d'un don de sang chez les donneurs de sang (DS), n'est disponible dans ce pays. L'objectif de cette étude était d'estimer la prévalence de la carence en fer, de l'anémie et de l'anémie ferriprive chezles DS au Centre National de Transfusion Sanguine (CNTS) à Kinshasa en RDC. Méthodes Entre Décembre 2012 et Août 2013, une étude transversale a été menée au CNTS où des DS éligibles au don de sang ont été inclus. Les informations socio démographiques et des prélèvements sanguins ont été collectés de manière simultanée au don de sang. La ferritine sérique a été dosée pour évaluer la carence en fer en utilisant la technique ELISA. L'hémogramme a été réalisé en vue d’évaluer et mettre au point l'anémie. Résultats Au total 386 DS ont été inclus dans cette étude. La prévalence de la carence en fer et de l'anémie ferriprive étaient respectivement de 63,2% (244/386) et 25,9% (100/386) des DS. Une anémie a été trouvée chez 36.5% (141/386) au moment du don de sang. Conclusion La carence en fer, l'anémie et l'anémie ferriprive demeurent très fréquentes chez les DS à Kinshasa. Ces résultats suggèrent la révision des tests biologiques utilisés dans le recrutement des DS au CNTS. Par ailleurs le dosage de la ferritine s'impose en routine chez les DS rég PMID:27303590

  5. TRANSFORMASI PEWAYANGAN DALAM TOKOH WISANGGENI SEBUAH ANALISIS INTERTEKSTUAL NOVEL WISANGGENI SANG BURONAN KARYA SENO GUMIRA ADJIDARMA DENGAN KOMIK LAHIRNYA BANGBANG WISANGGENI KARYA RA. KOSASIH

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    Mila Kurnia Sari

    2017-10-01

    Abstract This study aims to reveal the intertextuality relationship between the novel Wisanggeni Sang Buronan by Seno Gumira Adjidarma and Lahirnya Bangbang Wisanggeni by  of R.A. Kosasih in the context of Indonesiaan today. This type of research is qualitative approach using content analysis. Data collected by inventory events such as the similarities and differences of both text and see the transformation of the puppet in the text. The research results indicate first, Wisanggeni Sang Buronan  by Seno Gumira Adjidarma can be interpreted as a social critic. Seno Gumira Adjidarma signaled to readers that characters like  Wisanggeni indispensable in this country. Second, Wisanggeni, in the novel Wisanggeni Sang Buronan and  Comics Lahirnya Bangbang Wisanggeni by R.A Kosasih has a very strong character. And third, Seno Gumira Adjidarma presents the figure Wisanggeni in different forms such as  presented by RA. Kosasih in Lahirnya Bangbang Wisanggeni by  Seno Gumira Adjidarma want to re-introduce Wisanggeni as a knight in the puppet is also example in courage. Keywords: Transformation, Pupets, Novels, Comics, Intertektualitas.

  6. Educational Values of the Dream and Reality Psychoanalysis In “Sang Pemimpi” (the Dreamer, a Novel by Andrea Hirata

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    Muhammad Nasir

    2015-02-01

    Full Text Available This article tries to look at psychoanalysis study of a novel concerning on the dream and reality in Sang Pemimpi (the Dreamer by Andrea Hirata. In general, his work portrays mostly about the condition and situational life of Belitung community. Here, Andrea shows his ability as the representative of Belitung's young generation succeeded in fulfilling his dream by explaining the real life of the people in his hometown and villages having bitter experience values in the rich environment. Besides, he tries to describe the difficult life faced by the villagers. The dream in this novel is not only his, but also all dreams of the Belitung community as the manifestation of their life condition comparing to other areas or provinces in the Indonesia. Further, through this novel (work, it is implied an important massage directed to both Indonesian authority and Belitung mayor in order to be able to increase the level of education of grass root community, especially for those who live in the remote area or a very isolated area, such as Belitung. This is the real dream of all participants in the island which remains unsolved.

  7. Lee Sang Gak Telescope (LSGT): A Remotely Operated Robotic Telescope for Education and Research at Seoul National University

    Science.gov (United States)

    Im, Myungshin; Choi, Changsu; Kim, Kihyun

    2015-08-01

    We introduce the Lee Sang Gak Telescope (LSGT), a remotely operated, robotic 0.43-meter telescope. The telescope was installed at the Siding Spring Observatory, Australia, in 2014 October, to secure regular and exclusive access to the dark sky and excellent atmospheric conditions in the southern hemisphere from the Seoul National University (SNU) campus. Here, we describe the LSGT system and its performance, present example images from early observations, and discuss a future plan to upgrade the system. The use of the telescope includes (i) long-term monitoring observations of nearby galaxies, active galactic nuclei, and supernovae; (ii) rapid follow-up observations of transients such as gamma-ray bursts and gravitational wave sources; and (iii) observations for educational activities at SNU. Based on observations performed so far, we find that the telescope is capable of providing images to a depth of R=21.5 mag (point source detection) at 5-σ with 15 min total integration time under good obs-erving conditions.

  8. Cardioplegia sangüínea contínua normotérmica Normotermic continuous blood cardioplegy

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    Domingo M Braile

    1989-08-01

    Full Text Available Os autores discutem o emprego da cardioplegia, bem como sua composição. A parada imediata dos batimentos pode ser conseguida com soluções cardioplégicas cristalóides ou sangüíneas, oxigenadas ou não. O agente que leva o coração à parada pode ser potássio, magnésio, procaína ou, mesmo, quelantes e bloqueadores de cálcio associados entre si ou não, contando com a edição da hipotermia ou não. Deve-se ficar atento para a falsa sensação de proteção a que a baixa temperatura possa nos induzir, uma vez que o frio, por si só, não é suficiente para manter o miocárdio viável por longos períodos. Substratos, como glicose e oxigênio, devem ser fornecidos durante o período de clampeamento aórtico, para garantir algum metabolismo aeróbio, nesse período. A adição de outros substratos, como glutamato, aspartato e lactato, assim como ATP ou creatina fosfato, precursores de intermediários do ciclo de Krebs, podem melhorar muito a proteção miocárdica. A infusão de cardioplegia sangüínea normotérmica de forma contínua mantém as necessidades metabólicas básicas para a sobrevivência das células. A membrana celular, com todas as suas funções estruturais e secretoras, é o ponto mais sensível à injúria isquêmica. Os removedores de radicais livres (scavengers são protetores indiretos da membrana celular. A cardioplegia retrógrada permite melhorar a distribuição das soluções na árvore coronariana, sendo muito útil nas reoperações. Ela deve fazer parte da tática cirúrgica, sem esquecermos suas limitações. O momento da reperfusão é o mais importante da proteção miocárdica; é nesse período que ocorre a liberação de radicais livres. O uso de removedores (scavengers pode melhorar as condições e o resultado da reperfusão. A cardioplegia sangüínea oxigenada e normotérmica enriquecida com substratos, antes usada em casos extremamente graves, por disfunção muscular em isquemia mioc

  9. Pharmacological study of radioactive-gold colloid transport by blood and by serous exudate; Contribution a l'etude pharmacologique du transport des colloides d'or radioactif par le sang et les exsudats sereux

    Energy Technology Data Exchange (ETDEWEB)

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

    1966-06-01

    After giving the essential physico-chemical properties of the colloids, the author considers the biological role of these substances and, in connection with their transport by the blood, their capture by elements of the reticula-endothelial system. A summary is given of present knowledge concerning the role of serous proteins in the transport of substances, particularly that of radio-active colloidal gold. The blood fractions which can take part in colloidal gold transport are the red blood corpuscles, the leukocytes and histiocytic elements as well as the plasma. The radioactive distribution in these various fractions is obtained by autoradiography of blood sediments. After showing the importance of the role of the plasma in radioactive particle transport, the author, describes the attempts made to detect a possible of colloidal gold 198 on the various serous proteins using various methods of separation. The ''in vitro'' and ''in vivo'' bonds between colloidal gold-198 particles and either the serous proteins or healthy specimens or the effusion liquids of pathological origin in man, or due to an experimental inflammation with carregenin in the rat, have been studied. The bonding appears to be effective because of the protective macromolecular layer formed by the gelatine. The different positions of the colloidal grains on the electrophoregram can only be explained by their different physico-chemical characteristics. Gold in the ionic form, on the other hand, is combined only with the albumen is the amount metal present does not exceed a certain value. (author) [French] Apres avoir enonce les proprietes physicochimiques essentielles des colloides nous etudions le devenir biologique de ces substances et, en relation avec leur transport par le sang, leur captation par les elements du Systeme Reticulo-Endothelial. Nous resumons les connaissances acquises jusqu'alors sur le role des proteines seriques dans le transport des

  10. Pharmacological study of radioactive-gold colloid transport by blood and by serous exudate; Contribution a l'etude pharmacologique du transport des colloides d'or radioactif par le sang et les exsudats sereux

    Energy Technology Data Exchange (ETDEWEB)

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

    1966-06-01

    After giving the essential physico-chemical properties of the colloids, the author considers the biological role of these substances and, in connection with their transport by the blood, their capture by elements of the reticula-endothelial system. A summary is given of present knowledge concerning the role of serous proteins in the transport of substances, particularly that of radio-active colloidal gold. The blood fractions which can take part in colloidal gold transport are the red blood corpuscles, the leukocytes and histiocytic elements as well as the plasma. The radioactive distribution in these various fractions is obtained by autoradiography of blood sediments. After showing the importance of the role of the plasma in radioactive particle transport, the author, describes the attempts made to detect a possible of colloidal gold 198 on the various serous proteins using various methods of separation. The ''in vitro'' and ''in vivo'' bonds between colloidal gold-198 particles and either the serous proteins or healthy specimens or the effusion liquids of pathological origin in man, or due to an experimental inflammation with carregenin in the rat, have been studied. The bonding appears to be effective because of the protective macromolecular layer formed by the gelatine. The different positions of the colloidal grains on the electrophoregram can only be explained by their different physico-chemical characteristics. Gold in the ionic form, on the other hand, is combined only with the albumen is the amount metal present does not exceed a certain value. (author) [French] Apres avoir enonce les proprietes physicochimiques essentielles des colloides nous etudions le devenir biologique de ces substances et, en relation avec leur transport par le sang, leur captation par les elements du Systeme Reticulo-Endothelial. Nous resumons les connaissances acquises jusqu'alors sur le role des proteines seriques dans le transport des substances et particulierement dans le

  11. Sang i Demensplejen

    DEFF Research Database (Denmark)

    Ridder, Hanne Mette Ochsner

    2004-01-01

    For mange svært demensramte er det umuligt at deltage i en aktivitet med andre personer. De har svært ved at forstå, hvad der foregår omkring dem, og bliver urolige og "forstyrrende". Eller de falder i søvn. Artiklen giver et bud på, hvordan den gruppe af demensramte, som ofte beskrives som uroli...

  12. Jõulukuine plaadisadu / Joosep Sang

    Index Scriptorium Estoniae

    Sang, Joosep

    2005-01-01

    Lühidalt eesti heliplaatidest: "Eesti hääled", "Hendrik Sal-Saller & Estonian Dream Big Band", "Ain Agan ja Tallinna Kammerorkester", "The Book's Burning", "Mu süda ärka üles", "Inimene õpib...", "You Stepped Out of a Dream", "Andke tagasi maa", "Jesli ljubish, naidi..."

  13. Una ciudad de los vascones en el yacimiento de Campo Real/Fillera (Sos del Rey Católico-Sangüesa

    Directory of Open Access Journals (Sweden)

    Andreu Pintado, Javier

    2008-12-01

    Full Text Available The following paper deals with the detailed and preliminary study of the archaeological site of Campo Real/Fillera (Sos del Rey Católico/Sangüesa, between today Zaragoza and Navarra provinces specially focusing in its Roman period. The paper exposes a review of the archeological and epigraphical material from the site, proposes an urban condition for it and raises some hypothesis on its identification with one of the cities that ancient sources tribued to Vascones.El presente trabajo aborda el estudio detallado y preliminar del yacimiento arqueológico de Campo Real/Fillera (Sos del Rey Católico/Sangüesa, en el límite entre las actuales provincias de Zaragoza y Navarra con especial atención a su etapa romana. Se procede a la revisión del material arqueológico y epigráfico procedente del lugar, se defiende la condición de enclave urbano del yacimiento y se plantea una hipótesis respecto de su identificación con las ciudades que las fuentes antiguas atribuyen a los Vascones.

  14. Concentrações sangüíneas de metais pesados e praguicidas organoclorados em crianças de 1 a 10 anos

    Directory of Open Access Journals (Sweden)

    Santos Filho Eladio

    1993-01-01

    Full Text Available Foi realizado estudo em 6 bairros do Município de Cubatão, SP, Brasil, situados às margens dos principais rios do município, com uma amostragem de 251 crianças de 1 a 10 anos de idade. Foram verificadas as concentrações sangüíneas de praguicidas organoclorados em 242 crianças, sendo que 73 crianças (30% apresentaram concentrações de p-p'DDE (média = 0,85 ± 2,13 µg/l., e em 47 crianças (19% foi encontrado HCH total (média = 0,28 ± 0,79 µg/l.. Verificou-se também a concentração sangüínea de chumbo e mercúrio, sendo que se obteve a plumbemia média de 17,8 ± 5,8 µg/dl. e concentração média de mercúrio de 9,1 ± 6,4 µg/l. Crianças consumidoras de organismos aquáticos de origem exclusiva dos rios de Cubatão apresentaram teores médios de mercúrio (média = 14,7 ±7,1 µg/l. significativamente maiores (p < 0,04 em comparação às crianças não consumidoras de organismos aquáticos de qualquer origem (média = 10,0 ± 6,5 µg/l..

  15. Prevalência dos tipos sangüíneos A, B e AB em gatos domésticos mestiços da cidade de Porto Alegre, Rio Grande do Sul, Brasil

    Directory of Open Access Journals (Sweden)

    Luciana de Almeida Lacerda

    2008-12-01

    Full Text Available O presente estudo teve como objetivo determinar a prevalência dos tipos sangüíneos em felinos domésticos, mestiços, da cidade de Porto Alegre, Rio Grande do Sul, Brasil. Foram selecionados aleatoriamente 100 gatos, clinicamente saudáveis, mestiços e sem parentesco entre si. Amostras de sangue foram coletadas da veia jugular e a tipagem sangüínea foi realizada através do teste RapidVet H Feline (DMS Laboratories, Flemington, USA e do teste hemaglutinação em tubo de ensaio. A tipagem reversa foi realizada para confirmar o tipo e a presença de aloanticorpos naturais. No presente estudo encontrou-se prevalência de 97% e 3% de gatos do tipo A e B, respectivamente. Não foram encontrados gatos do tipo AB. Os resultados indicam que no sul do Brasil há uma alta prevalência de gatos domésticos mestiços do tipo A, entretanto a prevalência de gatos do tipo B encontrada no trabalho é mais alta do que aquelas relatadas em alguns países. O conhecimento da prevalência dos tipos sangüíneos da população de gatos de uma região pode auxiliar na determinação dos riscos de reações transfusionais e de ocorrência de isoeritrólise neonatal, e estes podem ser prevenidos através de tipagem sangüínea e teste de compatibilidade sangüínea.

  16. Enzymatic hydrolysis on protein and β-glucan content of Sang-yodrice bran hydrolysatesand their anti-inflammatory activityonRAW 264.7 cells

    Directory of Open Access Journals (Sweden)

    Natcha Phantuwong

    2017-12-01

    Full Text Available Background: Research focusing on the improvement of the utilization of rice bran is increasing due to its nutritional properties. Several biological activities of rice bran hydrolysates and its constituents have been reported. Sang-yod rice, a local rice variety in Southern of Thailand, is a pigmented rice. Furthermore, its bran has high nutritive value and health beneficial components. Accordingly, there is growing interest in transforming this by-product into a functional food ingredient. Objective: To investigate the effect of enzymatic hydrolysis processes on the digestion of protein and β-glucan and evaluate anti-proinflammatory properties of selected hydrolysates on RAW 264.7 macrophage cells. Method: Sang-yod rice bran hydrolysates were obtained using a single or co-enzymatic hydrolysis process and sequential hydrolysis process using amyloglucosidase and protease G6. Effects of enzyme concentration (3-5% v/w and hydrolysis duration (30, 60, and 120 min on soluble protein and β-glucan contents of obtained rice bran hydrolysates were evaluated. The selected rice bran hydrolysates were evaluated for their cell viability and inhibition against NO and pro-inflammatory cytokines generation on RAW 264.7 mouse macrophage cell lines. Results: Protein content (0.59-3.37 % of the rice bran hydrolysates (RBHs was increased by increasing of enzyme concentration (3-5% v/w and hydrolysis time (60-120 min. However, the β-glucan content (0.88-4.63% of RBHs decreased with the increase of those parameters. The RBHs derived by the sequential process using 5% v/w enzyme concentration and 60 min hydrolysis time gave high protein (3.23% and high β-glucan (4.02% contents. The hydrolysates with high amount of protein and/or β-glucan contents demonstrated no cytotoxicity against RAW 264.7 cells at concentration range of 100-2,000 μg/ml. Additionally, they demonstrated NO inhibition and pro-inflammatory inhibition ranges of 49.09-71.63% and 9

  17. ”I sangen møtes vi på felles grunn.” Om sang og sangbøker i norsk skole.

    Directory of Open Access Journals (Sweden)

    Ragnhild Elisabeth Lund

    2010-12-01

    Full Text Available Sangfaget har en lang og sterk tradisjon i den norske skolestua og sangboka har vært et sentralt læremiddel i mer enn 150 år. Formålet med denne artikkelen er å belyse de mange og ulike begrunnelser som er blitt knyttet til faget opp gjennom tidene og å vise hvilket innhold sangbøkene har søkt å formidle. Presentasjonen av sangfagets begrunnelser er basert på en undersøkelse av skolehistoriske tekster og læreplaner fra tidlig på 1800-tallet fram til vår tid. Jeg har også sett på forordene og forfatternes vektlegging av sangrepertoar og annet sang- og musikkfaglig innhold i de mest toneangivende sangbøkene fra samme periode. For å finne ut hvilke sanger elevene er blitt tilbudt og hvilke verdier sangene formidler, har jeg kartlagt repertoarvalget i tolv sangbokverk fra 1850 (Behrens’ Skolesangbog til 2008 (Amsrud & Bjørnstads Sang i Norge. Artikkelen viser at begrunnelsene for sangfaget favner vidt og at både de og innholdet i sangbøkene har endret seg i takt med utviklingen i utdanningssystemet og i samfunnet forøvrig. Videreformidling av sentrale sanger i norsk kulturarv har selvsagt stått sentralt. Men sangfaget har også befattet seg med opplæring i musikkteori, notelære og stemmepleie, og det har hatt som oppgave å utvikle kvalitetsbevissthet, samhold og fellesskap i tillegg til å bidra til læring og trivsel i andre fag. Når det gjelder repertoarvalg, har utviklingen gått fra en hovedvekt på sanger med et religiøst og oppdragende innhold via nasjonale sanger til en stadig økende andel ”blott-til-lyst-sanger” og sanger fra populærmusikkens område. Til tross for at repertoarvalget har endret seg, er det mange sanger som går igjen gjennom hele perioden. Med referanse til en definisjon av kanon som ”stabile forekomster” identifiserer artikkelen 34 sanger som kan sies å utgjøre en del av ”den norske sangskatten”.

  18. Desvios porta-jugular e cava-jugular passivos em cães: Investigação de pressões sangüíneas

    Directory of Open Access Journals (Sweden)

    Coelho Antônio Roberto Barros

    1999-01-01

    Full Text Available Os principais objetivos dos desvios veno-venosos durante o transplante ortotópico de fígado são: atenuação da estase venosa subdiafragmática, manutenção do retorno satisfatório de sangue ao coração e perfusão tissular eficiente. Investigações sobre PP, PVCIIH, PVC, PAM e PPR, bem como D PP e D PVCIIH foram conduzidas em seis cães, sob anestesia geral, com fígados perfundidos pela Artéria Hepática, submetidos a desvios porta-jugular e cava-jugular passivos durante 2 horas. Estes desvios não foram capazes de evitar estagnação de sangue na VP e VCIIH, acarretando estase e menor retorno sangüíneo ao coração, sugeridos por aumentos significativos de PP e PVCIIH e quedas significantes nos níveis de PVC. Os valores de PAM não apresentaram diferenças significativas em relação ao tempo T0, na maior parte dos tempos avaliados, enquanto que os valores de PPR foram significativamente menores que os verificados no tempo T0, na maioria dos tempos estudados. Tais pressões mantiveram-se, respectivamente, acima de 100 e 50 mm de Hg, atribuindo-se tais resultados, em parte, à vasoconstricção arteriolar generalizada. Incrementos de pressão na VP (D PP foram significativamente menos elevados que aqueles verificados na VCIIH (D PVCIIH, atribuindo-se tal diferença à complacência esplâncnica. Decréscimos ulteriores dos níveis de PP e PVCIIH sugerem queda do fluxo arterial para os territórios esplâncnico e sistêmico, decorrente de diminuição do retorno sangüíneo ao coração. Determinações de PP, PVCIIH, PVC, PAM e PPR podem constituir meio prático de avaliação hemodinâmica do desvio veno-venoso.

  19. Physicochemical aspects of decomposition of silica-alumina ores of argillites and green clays of Chashma-Sang Deposit of the Republic of Tajikistan by hydrochloric and nitric acids

    International Nuclear Information System (INIS)

    Kayumov, A.M.

    2018-01-01

    The purpose of work is to study the processes of decomposition of silica-alumina ores of argillites and green clays of Chashma-Sang Deposit of the Republic of Tajikistan by hydrochloric and nitric acids in temperature interval 20-98 deg C with the using of methods of selective extraction of valuable materials; elaboration of rational conditions of decomposition of raw material. Physicochemical properties of initial aluminium comprising ores, intermediate and final products of processing of argillites and green clays have been studied. Kinetic parameters of processes at acidic decomposition of argillites and green clays have been studied as well. The kinetic parameters of processes of decomposition of green clays and argillites by nitric and hydrochloric acids have been calculated. The flowsheet of complex processing of green clays and argillites of Chashma-Sang Deposit has been elaborated.

  20. Influence du temps de conservation du sang sur l'hémogramme réalisé avec le Vet-ABC chez le chien et le chat

    OpenAIRE

    Caillard, Agnès

    2002-01-01

    L'utilisation du Vet abc, automate d'hématologie de type «coulter » a permis d'étudier les modifications engendrées par la conservation du sang pendant 24 heures à température ambiante, sur les paramètres et constituants de l'hémogramme du chien et du chat. L'évaluation de l'effet de la conservation du sang sur l'IDR et sur les courbes de distribution cellulaire, constitue l'originalité de ce travail. Les évolutions les plus notables ont été les suivantes : - un VGM qui augmente en moyenne de...

  1. Determination du niveau d'anticorps antitetaniques en donneurs de sang au moyen du test ELISA-TÉTANOS (São Paulo, SP, Bresil

    Directory of Open Access Journals (Sweden)

    Luzia Cristina Contim Ferrato

    1990-12-01

    Full Text Available Le test ELISA-TÉTANOS (Biosys, France a été utilisé pour le titrage des anti-corps tétaniques (sensibilité = 0,0025 UI/ml en sérums humains de donneurs de sang, 566 hommes et 108 femmes, âges de 18 à 58 ans, moyenne de 29 ans, provenant de São Paulo, SP, Brésil. L'OMS, acceptant seulement la séroneutralisation sur souris (NT, la méthode de référence, pour les études sur la protection contre le tétanos, préconise le titre de 0,01 UI/ml comme minimum protecteur. BOURLEAUD & HUET ont proposé la limite de 0,06 UI/ml quand s'emploie le test ELISA, en attendant à une certaine discordance inévitable entre les méthodes. Parmi les 674 sérums étudiés, 178 (26,41% n'ont pas présenté d'anticorps ( 0,06 UI/ml.

  2. Efeitos da Histerectomia Total Abdominal sobre o Fluxo Sangüíneo Ovariano Effect of Total Abdominal Hysterectomy on Ovarian Blood Supply

    Directory of Open Access Journals (Sweden)

    Eliana Aguiar Petri Nahás

    2002-06-01

    Full Text Available Objetivo: avaliar os efeitos da histerectomia total abdominal (HTA sobre o fluxo sangüíneo ovariano, em mulheres no menacme, por meio da dopplervelocimetria e ultra-sonografia transvaginal. Métodos: estudo prospectivo no qual foram incluídas 61 mulheres, com idade igual ou inferior a 40 anos. As pacientes foram divididas em dois grupos: G1, com 31 pacientes submetidas à HTA, e G2, com 30 mulheres normais não submetidas à cirurgia. Somente foram incluídas pacientes eumenorréicas, ovulatórias, não-obesas ou fumantes, sem cirurgias ou doenças ovarianas prévias. Avaliou-se o fluxo sangüíneo das artérias ovarianas, inicialmente e aos 6 e 12 meses, pelo índice de pulsatilidade (IP na dopplervelocimetria, e o volume ovariano pela ultra-sonografia transvaginal (US. Para análise estatística empregou-se teste t pareado, análise de perfil, teste de Friedman e teste de Mann-Whitney. Resultados: na comparação estatística inicial os grupos foram homogêneos quanto às características epidemiológicas e quanto aos demais parâmetros avaliados neste estudo. Nas pacientes submetidas à histerectomia, observaram-se aos 6 e 12 meses aumento do volume ovariano ao US e diminuição do IP avaliado pela dopplervelocimetria (pPurpose: to evaluate the effect of total abdominal hysterectomy on ovarian blood supply in women in reproductive age, using transvaginal color Doppler. Methods: a prospective study was carried out on 61 40-year-old or younger women. They were divided into two groups: G1, 31 patients submitted to hysterectomy, and G2, 30 normal women. Criteria of inclusion: normal ovarian function at baseline, normal body weight, without expasure to tobacco, no history of laparotomy or ovarian pathology. The pulsatility index (PI of ovarian arteries determined by Doppler and the transvaginal ultrasonographic measurement of the ovarian volume were performed at three moments: baseline, 6 and 12 months. Results: at baseline the groups were

  3. Sistema de grupo sangüíneo Duffy: biologia e prática transfusional Duffy blood group system: biology and transfusion practice

    Directory of Open Access Journals (Sweden)

    Eduardo Jens

    2005-06-01

    Full Text Available Após a introdução da técnica de antiglobulina indireta por Coombs em meados da década de 40, vários anticorpos antieritrocitários foram descobertos. O grupo sanguíneo Duffy foi descoberto quando Cutbush e Ikin detectaram, no início da década de 50, os primeiros anticorpos desse sistema. Os anticorpos Duffy são clinicamente significantes na prática transfusional, pois mostraram ser causadores de reação hemolítica transfusional e de doença hemolítica do recém-nascido, sendo de ocorrência mundial. O gene FY é constituído por dois exons e seu lócus foi mapeado no cromossomo 1q22-q23. Os antígenos Fyª e Fy b são codificados pelos alelos FYA e FYB e são responsáveis pelos fenótipos Fy(a+b-, Fy(a-b+ e Fy(a+b+. São carreados por uma glicoproteína de 336 aminoácidos também chamada DARC (Duffy Antigen/Receptor for Chemokines, que tem alta afinidade a quimiocinas, sendo também os receptores para Plasmodium vivax. Os polimorfismos relacionados aos seus alelos permitiram o desenvolvimento da técnica de genotipagem por PCR, que é de grande utilidade para a segurança transfusional e incompatibilidade feto-materna. Na última década, inúmeras pesquisas têm sido feitas quanto ao papel biológico dos antígenos de grupos sangüíneos. Nesse artigo iremos revisar o sistema de grupo sangüíneo Duffy, em especial quanto à prática transfusional e suas funções biológicas.After the introduction of the indirect antiglobulin technique by Coombs in the middle of the 1940's, several antibodies have been discovered. Duffy blood group system came to light when Cutbush and Ikin detected the first antibodies related to this system in the beginning of the 1950's. The antibodies of this system are clinically significant in transfusional practice as they have been involved in hemolytic transfusion reactions and hemolytic disease of the newborn, showing them to be of worldwide occurrence. The FY gene is constituted of two exons and its

  4. [Therapeutic applications and promises of cellular and tissue engineering. What strategic choice for the Etablissement Français du Sang?].

    Science.gov (United States)

    Hervé, Patrick

    2007-05-01

    A new medical field, known as regeneration medicine, is developing and attracting more and more researchers and practitioners. Whereas hematopoietic cell-based therapies have already proven their efficacy in numerous--malignant or not--diseases, non-hematopoietic cell-based therapies have not. They can be useful to dozens, if not hundreds, of patients with various disorders, such as cardiopathy, diabetes, some types of cancer, osteoarticular and neurodegenerative disorders. In these fields, numerous clinical applications are possible for mesenchymal stem cells. Cell and tissue (corneas, bone, skin) therapy products require the definition of pharmaceutical standards with new European requirements in terms of quality and safety. The legitimacy of the Etablissement Français du Sang (EFS) in cell and tissue engineering activities is established, it is recognized by most specialists and by regulatory authorities and has been asserted by the orientations of its "contrat d'objectifs et de moyens". An independent committee has been set up by the EFS President to define an EFS-specific strategy. This committee made up of qualified specialists was required to draw up a rational organization plan for these activities, in order for EFS to be in a position to produce cells and tissues according to pharmaceutical standards. The committee proposals are based on economic data and an inventory of existing cell and tissue engineering activities. Public/private partnerships are required and efforts must focus towards the industrial valorization of EFS expertise in R&D activities and staff know-how. Implementing such a new organization requires national management and the cooperation of institutional actors (university hospitals, cancer treatment centers, universities). For the success of this approach, EFS personnel must be convinced of its legitimacy and new skills must be encouraged. With its numerous assets, EFS can be ambitious and assert itself as a major actor in cell and

  5. Anormalidades de fluxo sangüíneo cerebral em indivíduos dependentes de cocaína Cerebral blood flow abnormalities in cocaine dependent subjects

    Directory of Open Access Journals (Sweden)

    Sergio Nicastri

    2000-06-01

    Full Text Available INTRODUÇÃO: Nos últimos anos, tem havido relatos de anormalidades do fluxo sanguíneo cerebral em indivíduos com o abuso de cocaína, detectadas por meio de tomografia computadorizada por emissão de fóton único (SPECT. Esse padrão anormal de perfusão cerebral tem sido associado a prejuízos cognitivos mas não a alterações observáveis por meio de exames de neuroimagem estrutural. Um problema envolvendo a maioria dos trabalhos publicados sobre esse tema é a inclusão de um grande número de usuários de heroína nas amostras estudadas. Essa outra droga também parece afetar o padrão de perfusão cerebral, particularmente durante estados de abstinência. MÉTODOS: Quatorze pacientes dependentes de cocaína (nenhum com uso de opióides e 14 voluntários normais (grupo controle foram submetidos a exames de SPECT com dímero de etil-cisteína marcado com tecnécio-99m. A análise dos exames de SPECT foi realizada por meio de análise visual qualitativa das imagens obtidas (procedimento padrão na prática clínica, realizada por um radiologista não informado sobre o diagnóstico dos indivíduos avaliados. RESULTADOS: A análise visual revelou um padrão sugestivo de irregularidades do fluxo sangüíneo cerebral em nove pacientes, mas em apenas dois controles (p = 0,018; teste exato de Fisher bicaudal. CONCLUSÕES: Anormalidades de circulação cerebral podem ter relação com prejuízos cognitivos relatados em populações de dependentes de cocaína. Embora déficits de perfusão cerebral associados ao uso de cocaína possam ser irreversíveis, têm surgido relatos na literatura de tratamentos para essas anormalidades de fluxo sangüíneo. Alterações de fluxo sangüíneo cerebral associadas à dependência de cocaína ocorrem mesmo na ausência de abuso ou dependência de opióides.INTRODUCTION: In the last years, there have been reports of abnormalities in brain blood flow of cocaine abusers, detected by single photon computed

  6. Blood constituents of holstein cows fed with corn or elephant-grass silages / Constituintes sangüíneos de vacas da raça holandesa alimentadas com silagens de milho ou de capim-elefante

    Directory of Open Access Journals (Sweden)

    Valter Harry Bumbieris Júnior

    2010-07-01

    Full Text Available The objective of this work was to evaluate the effects of corn (Zea mays L. silage and elephant-grass (Pennisetum purpureum Schum silage on the nutrition of cows during lactation, over some of the blood constituents (glucose, triglycerides and urea. The treatments were three silages (corn silage, elephant-grass silage with bacterial inoculating, elephant-grass silage with enzyme-bacterial inoculating. Nine Holstein cows, with a medium weight of 520 kg, were distributed in experimental delineation of simultaneous triple Latin square. The blood glucose rates were considered normal, independents of the silage used. Concerning the triglicerides levels, it was verified that they are below normal to the different silages. One of the reasons would be the low fat level on the diet. The blood levels of urea observed on the three treatments are considered normal. There was not significant difference among the different kinds of silage in relation to the blood levels of urea, glucose and triglycerides.O objetivo deste trabalho foi avaliar os efeitos do fornecimento de silagem de milho (Zea mays L. e silagem de capim-elefante (Pennisetum purpureum Schum na alimentação de vacas em lactação, sobre alguns dos constituintes sangüíneos (glicose, triglicerídeos e uréia. Os tratamentos foram três silagens (silagem de milho, silagem de capim-elefante com inoculante bacteriano, silagem de capim-elefante com inoculante enzimo-bacteriano. Foram utilizadas nove vacas da raça holandesa, com peso médio de 520 kg, distribuídas em delineamento experimental de triplo quadrado latino simultâneo. As taxas de glicose sangüínea das vacas foram consideradas normais, independente do volumoso utilizado. Em relação aos níveis de triglicerídeos, verificou-se que estão abaixo do normal para os diferentes volumosos. Uma das razões seria o baixo nível de gordura na dieta. Os níveis sangüíneos de uréia observados nos três tratamentos são considerados normais

  7. PIERRE BOURDIEU, SANG JURU DAMAI

    OpenAIRE

    Krisdinanto, Nanang

    2016-01-01

    Pierre Bourdieu built his theoretical orientation as a solution to what he saw as a false opposition between objectivism and subjectivism; to quote Bourdieu: “absurd opposition between individual and society”. Bourdieu offered a point of view that emphasizes on duality in the relationship between agent and structure, as an alternative to the previously existing dualistic views. Bourdieu refers to his theoretical orientation as genetic structuralism, constructivist structuralism or structurali...

  8. Kuula ka neid / Joosep Sang

    Index Scriptorium Estoniae

    Sang, Joosep

    2009-01-01

    Tutvustused : XXI Sajandi Orkester. Üheksa. Tallinn : XXISO, 2008. Illustraator. Minu keha. Tallinn : MTÜ ILL Produktsioon, 2008. Pastoraal. Helirännak põldudel ja heinamaadel. Tallinn : Eestimaa Looduse fond, 2008

  9. Kuula ka neid / Joosep Sang

    Index Scriptorium Estoniae

    Sang, Joosep

    2009-01-01

    Heliplaaditutvustused: Bullfrog Brown with Steve Lury. KWAQ Records, 2009; Grupa Janke Randalu. Live. [Saksamaa] : Jazz'n'Arts, 2008; Paha Polly. Ei jäägi üle muud... [Tartu] : Forward, 2008. Uutest heliplaatidest

  10. Standard elements; Elements standards

    Energy Technology Data Exchange (ETDEWEB)

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

    1958-07-01

    Following his own experience the author recalls the various advantages, especially in the laboratory, of having pre-fabricated vacuum-line components at his disposal. (author) [French] A la suite de sa propre experience, l'auteur veut rappeler les divers avantages que presente, tout particulierement en laboratoire, le fait d'avoir a sa disposition des elements pre-fabriques de canalisations a vide. (auteur)

  11. Extracorporeal irradiation of calves blood. Effects on: the lymphocytes, the blood-platelet function, seric proteins, and fibrinogen; Irradiation extracorporelle du sang de veau effets sur: les lymphocytes, la fonction plaquettaire, les proteines seriques et le fibrinogene

    Energy Technology Data Exchange (ETDEWEB)

    Hollard, D; Suscillon, M; Benabid, Y; Concord, E; Ivanoff, M; Laurent, M; Rambaud, F [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1969-07-01

    The present paper reports the results obtained after extracorporeal irradiation of circulating blood of calves. Animals are divided in 3 groups as follows: - control animals: blood circulation without irradiation; - calves which received 40000 rads during 24 hours of continuous irradiation; - calves which received the same dose, during a period of 5 days (5 hours every day). The more interesting results are: - the early lymphopenia which persists for 7 or 8 weeks and may be in relationship with the change of immunoglobulins; - a constant hyperfibrinemia (12 g/l) never reported, as far as we know, by authors using I.E.C. Several hypothesis are advanced to explain this phenomenon. (authors) [French] Ce travail presente l'ensemble des resultats hematologiques obtenus apres irradiation extracorporelle du sang de veaux repartis en 3 series: - veaux temoins: circulation du sang sans irradiation - veaux soumis a une irradiation continue dose globale integree de 40000 rads en 24 heures; - veaux ayant recu la meme dose globale en irradiation fractionnee repartie sur 5 jours (5 heures par jour). Les resultats les plus marquants sont d'une part une lymphopenie precoce se prolongeant durant 7 a 8 semaines et qui pourrait etre reliee aux modifications observees sur les immunoglobulines. D'autre part une hyperfibrinemie (12 g/l) constante, apparemment jamais signalee par d'autres auteurs utilisant l'I.E.C. Plusieurs hypotheses explicatives de ce phenomene sont exposees et sont a l'etude. (auteurs)

  12. Associação entre marcadores de grupos sangüíneos e produção à primeira lactação em bovinos da raça Gir Leiteiro

    Directory of Open Access Journals (Sweden)

    Conceição R.O.

    2000-01-01

    Full Text Available Foram analisados 138 resultados de tipagem sangüínea de animais da raça Gir Leiteiro, pertencentes a uma população fechada submetida a acasalamentos preferenciais por aproximadamente 30 anos. Estudou-se a associação entre os sistemas B, F, J, L e Z de grupos sangüíneos e a produção de leite à primeira lactação. Os resultados mostraram diferença significativa (P<0,001 na produção de leite das primíparas que possuem o fator Z, 3634,43kg, em relação as que não apresentaram o mesmo fator, 3074,62kg. Para o sistema B, por meio de contraste de médias, verificou-se que houve diferença significativa (P<0,05 entre animais com o fenogrupo I1O1Y2A?B?E?3(J?K?P?Q? em homozigose, 4202,86kg, e aqueles com os fenogrupos B(PQTE?3G?P?/I1O1Y2A?B?E?3(J?K?P?Q?, 3493,33kg, e BQTA?B?I?(P?/I1O1Y2A?B?E?3(J?K?P?Q?, 3630,36kg.

  13. Extracorporeal irradiation of calves blood. Effects on: the lymphocytes, the blood-platelet function, seric proteins, and fibrinogen; Irradiation extracorporelle du sang de veau effets sur: les lymphocytes, la fonction plaquettaire, les proteines seriques et le fibrinogene

    Energy Technology Data Exchange (ETDEWEB)

    Hollard, D.; Suscillon, M.; Benabid, Y.; Concord, E.; Ivanoff, M.; Laurent, M.; Rambaud, F. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1969-07-01

    The present paper reports the results obtained after extracorporeal irradiation of circulating blood of calves. Animals are divided in 3 groups as follows: - control animals: blood circulation without irradiation; - calves which received 40000 rads during 24 hours of continuous irradiation; - calves which received the same dose, during a period of 5 days (5 hours every day). The more interesting results are: - the early lymphopenia which persists for 7 or 8 weeks and may be in relationship with the change of immunoglobulins; - a constant hyperfibrinemia (12 g/l) never reported, as far as we know, by authors using I.E.C. Several hypothesis are advanced to explain this phenomenon. (authors) [French] Ce travail presente l'ensemble des resultats hematologiques obtenus apres irradiation extracorporelle du sang de veaux repartis en 3 series: - veaux temoins: circulation du sang sans irradiation - veaux soumis a une irradiation continue dose globale integree de 40000 rads en 24 heures; - veaux ayant recu la meme dose globale en irradiation fractionnee repartie sur 5 jours (5 heures par jour). Les resultats les plus marquants sont d'une part une lymphopenie precoce se prolongeant durant 7 a 8 semaines et qui pourrait etre reliee aux modifications observees sur les immunoglobulines. D'autre part une hyperfibrinemie (12 g/l) constante, apparemment jamais signalee par d'autres auteurs utilisant l'I.E.C. Plusieurs hypotheses explicatives de ce phenomene sont exposees et sont a l'etude. (auteurs)

  14. Novo sistema de cardioplegia sangüínea em cirurgia de cardiopatia congênita New delivery system for pediatric blood cardioplegia

    Directory of Open Access Journals (Sweden)

    Pedro R Salerno

    1995-09-01

    Full Text Available O objetivo do presente estudo é apresentar um sistema de cardioplegia sangüínea para cirurgia de cardiopatia congênita. Foram analisados, prospectivamente, 71 pacientes com 10.12 kg em média, 34 eram do sexo feminino e a idade média foi de 2,1 anos. Da linha arterial, passando por um trocador de calor, aspiramos para uma seringa de 50 cc sangue a 8ºc, a qual é conectada a outra seringa de 10 cc com uma solução decimal de potássio, através de duas torneirinhas. A mistura da solução decimal (3 ml com 47 ml de sangue a 8o C origina uma solução de sangue com 15 meq/1 de potássio. Esta solução é infundida na raiz da aorta, de acordo com o peso do paciente (10 cc/kg. Em todos obtivemos parada cardioplégica. O tempo médio de extracorpórea foi de 87,2 minutos e de pinçamento aórtico, de 60,7 minutos. Treze pacientes evoluíram para óbito, 6 por falência miocárdica, 3 por síndrome de baixo débito, 2 com arritmia, 1 com falência renal e 1 com coagulopatia. Os 58 demais pacientes receberam alta hospitalar sem complicações. Em conclusão, este método mostrou ser eficiente na preservação miocárdica e com baixa morbi-mortalidadeThe purpose of this study is to present a simple Delivery System of Blood Cardioplegia for myocardial preservation during congenital cardiac operation. We prospectively analysed 71 patients (pts with 10/12 kg of body mean weight, 34 were female and mean age was 2/1 years. From the arterial line, passing through a mini heat exchanger, blood at 8 C is aspirated to a 50 cc syringe, which is conected to a 10 cc syringe with a KCL + decimal solución using 2 stopcocks. The mixture originates a cold blood with 15 mEq/l of KCL + that is infused into the aortic root, according to the pts weight (10 cc/kg. In all pts cardiac arrest was obtained. The mean extracorporeal circulation time and crossclamping was 87.2 and 60.7 min. All pts recovered sinus rhythm with good ventricular function. Thirteen patients

  15. Galvanic element. Galvanisches Element

    Energy Technology Data Exchange (ETDEWEB)

    Sprengel, D.; Haelbig, H.

    1980-01-03

    The invention concerns a gas-tight sealed accumulator with positive and negative electrode plates and an auxillary electrode electroconductively bound to the latter for suppressing oxygen pressure. The auxillary electrode is an intermediate film electrode. The film catalysing oxygen reduction is hydrophilic in character and the other film is hydrophobic. A double coated foil has proved to be advantageous, the hydrophilic film being formed from polymer-bound activated carbon and the hydrophrobic film from porous polytetrafluoroethylene. A metallic network of silver or nickel is rolled into the outer side of the activated carbon film. This auxillary electrode can be used to advantage in all galvanic elements. Even primary cells fall within the scope of application for auxillary electrodes because many of these contain a highly oxidized electrodic material which tends to give off oxygen.

  16. Eesti luuletaja päris oma prantsuse luuleraamat. August Sanga, Jaan Krossi ja Ain Kaalepi loomingust 1960. aastail / An Estonian Poet’s Own Book of French Poetry. About the Works of August Sang, Jaan Kross and Ain Kaalep in the 1960s

    Directory of Open Access Journals (Sweden)

    Katre Talviste

    2013-12-01

    Full Text Available This article positions the translations of French verse works (plays and selected collections of individual poets that August Sang, Jaan Kross and Ain Kaalep made in the 1960s, onto the background of their own original works. At that time, August Sang translated four plays by Molière (The Misanthrope, Tartuffe, The School for Wives in 1961; Amphitryon in 1961, which have already been discussed in relation to the tradition of translating the French syllabic verse into Estonian, because these translations form a considerable part of the body of Estonian translations of French verse poetry. For Jaan Kross and Ain Kaalep, the wider context is created by the so-called free verse battles in the 1950s, to which we can link Kross’ translation of a selected collection of Éluard (Veel enne kostma peab, 1969 and Kaalep’s translation of a selected collection of Prévert (Kuidas portreteerida lindu, 1965. One of the two remaining translations by Kross, (Rostand’s Cyrano de Bergerac, 1964, can also be examined in relation to the problems of translating verse, but the other, (Béranger’s Laulud, 1963, should be discussed in the framework of intellectual and cultural resistance, a part of which was also the struggle put up for the existence of free verse in the 1950s and 1960s. Of August Sang’s original work, the article examines his collection of poems Võileib suudlusega (1963, written simultaneously with his translations of Molière’s plays and published right after them. Both the translations and the collection of original poems have attracted critics’ attention with their remarkable lack of linguistic constraint and simplicity. Although Sang has rarely voiced theoretical ideas about translation or explained his method, both his poetic image, outlined in the collection Võileib suudlusega, and his search for right words, reflected in the drafts of his translations, let us believe that the simplicity of expression and the avoidance of marked

  17. Transplutonium elements

    Energy Technology Data Exchange (ETDEWEB)

    Sivaramakrishnan, C. K.; Jadhav, A. V.; Reghuraman, K.; Mathew, K. A.; Nair, P. S.; Ramaniah, M. V.

    1973-07-01

    Research progress is reported on studies of the transplutonium elements including recovery and purification of americium, preparation of /sup 238/Pu, extraction studies using diethylhexyl phosphate. (DHM)

  18. Toxic Elements

    DEFF Research Database (Denmark)

    Hajeb, Parvaneh; Shakibazadeh, Shahram; Sloth, Jens Jørgen

    2016-01-01

    Food is considered the main source of toxic element (arsenic, cadmium, lead, and mercury) exposure to humans, and they can cause major public health effects. In this chapter, we discuss the most important sources for toxic element in food and the foodstuffs which are significant contributors to h...

  19. Séroprévalence des marqueurs viraux sur les dons du sang au Centre de Transfusion Sanguine, Hôpital Militaire d’Instruction Mohammed V de Rabat

    Science.gov (United States)

    Uwingabiye, Jean; Zahid, Hafidi; Unyendje, Loubet; Hadef, Rachid

    2016-01-01

    Le but de ce travail était de déterminer la prévalence du virus de l’immunodéficience humaine (VIH), du virus de l’hépatite B (VHB) et C (VHC) sur les dons du sang collectés au Centre de transfusion sanguine(CTS) de l’hôpital militaire d’instruction Mohammed V entre 2010 et 2012. Etude rétrospective menée auprès des donneurs de sang militaires âgés de 18 à 50 ans avec prédominance masculine (95%). L’entretien médical pré-don constitue la première barrière de sélection des sujets à risque. Le dépistage biologique était réalisé par technique immuno-enzymatique en milieu liquide utilisant des anticorps et/ou des antigènes. L’ELISA (enzyme linked immuno-sorbent assay) combiné de quatrième génération pour VHC et VIH a été utilisé. La confirmation a été faite en réalisant la même technique en double au CTS et au laboratoire de virologie. Dans notre série de 25661 échantillons testés, la prévalence du VHB était 3,97‰ (n=102), celle de VHC était 2,45 ‰ (n=63), celle de VIH était 0,15 ‰ (n=4). Un seul cas de coïnfection (0,039 ‰) par le VHB et VHC a été noté, aucune association entre VIH-VHB, VIH-VHC ou VHB, VHC et VIH n’a été enregistrée. Les taux faibles de séroprévalence des marqueurs viraux de notre étude montrent l’amélioration des mesures préventives en ce qui concerne la sélection des donneurs et des tests de dépistage. Cette prévalence constatée incite à maintenir l’utilisation du réactif combiné qui est la seule alternative à la biologie moléculaire pour les pays en voie de développement. PMID:28292147

  20. Concentrações sangüíneas de metais pesados e praguicidas organoclorados em crianças de 1 a 10 anos Heavy metal and organochlorine pesticide blood levels in children aged between 1 and 10

    Directory of Open Access Journals (Sweden)

    Eladio Santos Filho

    1993-02-01

    Full Text Available Foi realizado estudo em 6 bairros do Município de Cubatão, SP, Brasil, situados às margens dos principais rios do município, com uma amostragem de 251 crianças de 1 a 10 anos de idade. Foram verificadas as concentrações sangüíneas de praguicidas organoclorados em 242 crianças, sendo que 73 crianças (30% apresentaram concentrações de p-p'DDE (média = 0,85 ± 2,13 µg/l., e em 47 crianças (19% foi encontrado HCH total (média = 0,28 ± 0,79 µg/l.. Verificou-se também a concentração sangüínea de chumbo e mercúrio, sendo que se obteve a plumbemia média de 17,8 ± 5,8 µg/dl. e concentração média de mercúrio de 9,1 ± 6,4 µg/l. Crianças consumidoras de organismos aquáticos de origem exclusiva dos rios de Cubatão apresentaram teores médios de mercúrio (média = 14,7 ±7,1 µg/l. significativamente maiores (p A study of a sample of 251 children aged between 1 and 10 was carried out in 6 districts of Cubatão county, S. Paulo State, Brazil. This study showed the presence of organochlorine pesticides in the blood serum of 242 children, p-p' DDE was detected in 73 of the samples (30% and HCH in 47 them (19%. The mean value of p-p' DDE was 0.85 ± 2.13 µg/l. and that of HCH was 0.28 ± 0.79 µg/l. Lead and mercury were also detected in the blood serum. The mean value for lead was 17.8 ± 5.8 µg/l. and for mercury was 9.1 ± 0.79 µg/l. The levels found in consumers of aquatic organisms taken from the rivers of Cubatão showed a mean mercury level (mean = 14.7 ± 7.1 µg/l. higher than (p < 0.04 that of those who did not consume any aquatic organisms at all (mean = 10.0 ± 6.5 µg/l..

  1. Fuel element

    International Nuclear Information System (INIS)

    Armijo, J.S.

    1976-01-01

    A fuel element for nuclear reactors is proposed which has a higher corrosion resisting quality in reactor operations. The zirconium alloy coating around the fuel element (uranium or plutonium compound) has on its inside a protection layer of metal which is metallurgically bound to the substance of the coating. As materials are namned: Alluminium, copper, niobium, stainless steel, and iron. This protective metallic layer has another inner layer, also metallurgically bound to its surface, which consists usually of a zirconium alloy. (UWI) [de

  2. Concentrações sangüíneas de lactato em eqüinos durante a prova de fundo do concurso completo de equitação

    Directory of Open Access Journals (Sweden)

    Gomide Lina Maria Wehrle

    2006-01-01

    Full Text Available Colheu-se sangue de 13 eqüinos competindo na prova de Fundo do Concurso Completo de Equitação, categoria internacional três estrelas, e dosou-se lactato sangüíneo na manhã antes da prova, antes e imediatamente depois das fases B e D e 10 minutos após a fase D. Foi observado aumento significativo nas concentrações de lactato apenas após o término da fase D, demonstrando que os animais foram submetidos a um grande esforço físico, com desenvolvimento de acidose metabólica decorrente do acúmulo de lactato. Houve diminuição significativa dos valores dez minutos após o término do cross-country, exceto para o eqüino de número 12, único animal a completar o percurso dentro do tempo estipulado, o qual apresentou sinais clínicos de exaustão.

  3. A cross-sectional study of correlation of body image anxiety with social phobia and their association with depression in the adolescents from a rural area of Sangli district in India

    Directory of Open Access Journals (Sweden)

    Vivek Baliram Waghachavare

    2014-01-01

    Full Text Available Background: Prevailing socio-cultural influences lead females to desire a thin body and males a muscular body, especially in adolescents. This results in body image anxiety which may lead to social phobia. Together they can develop depression. The aim was to study the correlation of body image anxiety with social phobia and their association with depression, among adolescents. Methods: This was a cross-sectional study conducted in randomly selected colleges from a rural area of Sangli district Maharashtra, India. Stratified random sampling technique used with sample size 805. Pretested self-administered questionnaire used. Percentage, Chi-square test, binary logistic regression model was used to estimate odds ratio (OR and its 95% confidence intervals. Results: Of 997 study subjects body image anxiety, social phobia and depression were observed in 232 (23.3%, 193 (19.4% and 326 (32.7% participants, respectively. Binary logistic regression showed that body image anxiety (OR = 1.849 [1.22, 2.804]; P = 0.004 and social phobia (OR = 4.575 [2.952-7.09]; P < 0.001 were significant predictors for depression. Conclusions: Body image anxiety and social phobia are linked with the development of depression. This impresses the need for timely counseling and education among adolescents.

  4. PELTIER ELEMENTS

    CERN Document Server

    Tani, Laurits

    2015-01-01

    To control Peltier elements, temperature controller was used. I used TEC-1091 that was manufactured my Meerstetter Engineering. To gain control with the temperature controller, software had to be intalled on a controlling PC. There were different modes to control the Peltier: Tempererature controller to control temperature, Static current/voltage to control voltage and current and LIVE ON/OFF to auto-tune the controller respectively to the system. Also, since near the collision pipe there is much radiation, radiation-proof Peltier elements have to be used. To gain the best results, I had to find the most efficient Peltier elements and try to get their cold side to -40 degrees Celsius.

  5. Fuel element

    International Nuclear Information System (INIS)

    Kennedy, S.T.

    1982-01-01

    A nuclear reactor fuel element wherein a stack of nuclear fuel is prevented from displacement within its sheath by a retainer comprising a tube member which is radially expanded into frictional contact with the sheath by means of a captive ball within a tapered bore. (author)

  6. Transactinide elements

    International Nuclear Information System (INIS)

    Hemingway, J.D.

    1975-01-01

    The review is covered in sections, entitled: predicted nuclear properties - including closed shells, decay characteristics; predicted chemical properties - including electronic structure and calculated properties, X-radiation, extrapolated chemical properties, separation chemistry; methods of synthesis; the natural occurrence of superheavy elements. (U.K.)

  7. New elements

    International Nuclear Information System (INIS)

    Flerov, G.

    1976-01-01

    The history is briefly described of the investigation of superheavy elements at the Joint Institute for Nuclear Research at Dubna. The significance of the investigation is assessed from the point of view of the nuclear structure study and major problems encountered in experimental efforts are indicated. Current experimental methods aiming at the discovery or the production of superheavy nuclei with Z approximately 114 are listed. (I.W.)

  8. Perfil bioquímico de algumas enzimas no plasma sangüíneo de potras da raça Brasileiro de Hipismo (BH criadas em Colina, Estado de São Paulo

    Directory of Open Access Journals (Sweden)

    Fernando José Benesi

    2009-08-01

    Full Text Available Com o propósito de avaliar o perfil bioquímico de algumas enzimas, em potras sadias da raça BH (Brasileiro de Hipismo, utilizaram-se 380 amostras de plasma sangüíneo colhidas de 19 animais desde o nascimento até 24 meses de vida. Na análise dos resultados evidenciou-se que os valores médios das enzimas FA (fosfatase alcalina e CK (creatina quinase foram máximos entre o nascimento e 24 horas de vida (FA-1995.50 UI/ ; CK-189.13UI/L, enquanto que para a LD (lactato desidrogenase e GGT (gama glutamiltransferase as maiores magnitudes ocorreram, respectivamente, entre 3 e 4 dias (LD-479.11UI/L e aos 10 dias de idade (GGT-18.70UI/L. As FA, CK, LD e GGT, mostraram diminuições dos valores médios, respectivamente, até 6 meses (FA-323.50UI/L, 20 dias (CK-51UI/ L, 19 meses (LD-214.00UI/L e 4 meses (GGT-11.40UI/L estabilizando-se a seguir, com pequenas variações. A atividade da AST (aspartato aminotransferase que foi mínima logo após o nascimento (AST- 43.38UI/L, aumentou até os sete dias de vida (AST-110.89UI/L, e a seguir diminuiu progressivamente, com pequenas oscilações, até o final do estudo. Todas as enzimas avaliadas sofreram variações influenciadas pelo fator etário, particularmente no período inicial de vida dos animais estudados.

  9. Radiographic element

    International Nuclear Information System (INIS)

    Abbott, T.I.; Jones, C.G.

    1984-01-01

    Radiographic elements are disclosed comprised of first and second silver halide emulsion layers separated by an interposed support capable of transmitting radiation to which the second image portion is responsive. At least the first imaging portion contains a silver halide emulsion in which thin tubular silver halide grains of intermediate aspect ratios (from 5:1 to 8:1) are present. Spectral sensitizing dye is adsorbed to the surface of the tubular grains. Increased photographic speeds can be realized at comparable levels of crossover. (author)

  10. Superheavy elements

    CERN Document Server

    Hofmann, S

    1999-01-01

    The outstanding aim of experimental investigations of heavy nuclei is the exploration of spherical 'SuperHeavy Elements' (SHEs). On the basis of the nuclear shell model, the next double magic shell-closure beyond sup 2 sup 0 sup 8 Pb is predicted at proton numbers between Z=114 and 126 and at neutron number N=184. All experimental efforts aiming at identifying SHEs (Z>=114) were negative so far. A highly sensitive search experiment was performed in November-December 1995 at SHIP. The isotope sup 2 sup 9 sup 0 116 produced by 'radiative capture' was searched for in the course of a 33 days irradiation of a sup 2 sup 0 sup 8 Pb target with sup 8 sup 2 Se projectiles, however, only cross-section limits were measured. Positive results were obtained in experiments searching for elements from 110 to 112 using cold fusion and the 1n evaporation channel. The produced isotopes were unambiguously identified by means of alpha-alpha correlations. Not fission, but alpha emission is the dominant decay mode. The measurement ...

  11. Fuel element

    International Nuclear Information System (INIS)

    Hirose, Yasuo.

    1982-01-01

    Purpose: To increase the plenum space in a fuel element used for a liquid metal cooled reactor. Constitution: A fuel pellet is secured at one end with an end plug and at the other with a coil spring in a tubular container. A mechanism for fixing the coil spring composed of a tubular unit is mounted by friction with the inner surface of the tubular container. Accordingly, the recoiling force of the coil spring can be retained by fixing mechanism with a small volume, and since a large amount of plenum space can be obtained, the internal pressure rise in the cladding tube can be suppressed even if large quantities of fission products are discharged. (Kamimura, M.)

  12. Efeitos das fontes e níveis de sódio, cloro e potássio e da relação (Na + K/Cl, sobre o desempenho e características do plasma sangüíneo de poedeiras comerciais

    Directory of Open Access Journals (Sweden)

    Junqueira Otto Mack

    2000-01-01

    Full Text Available Dois experimentos foram realizados para estudar os efeitos da relação (Na + K/Cl na dieta de poedeiras comerciais no final do ciclo de postura, pela adição de bicarbonato de sódio (NaHCO3, cloreto de sódio (NaCl, cloreto de potássio (KCl e cloreto de amônia (NH4Cl, avaliando-se os parâmetros produtivos e características do plasma sangüíneo. O primeiro experimento envolveu cinco tratamentos: 0,30% de NaCl; 0,30% de NaCl + 0,95% de NaHCO3; 0,38% de KCl + 0,67% de NaHCO3; 0,38% de KCl + 1,62% de NaHCO3; e 0,38% de KCL + 2,56% de NaHCO3. A relação (Na + K/Cl foi, respectivamente, 3,46; 4,46; 4,46; 5,46; e 6,46. O segundo experimento envolveu quatro tratamentos: 0,30% NaCl; 0,47% de NaHCO3 + 0,19 de NH4Cl; 1,17% NaHCO3 + 0,19% de NH4Cl; e 1,88% de NaHCO3 + 0,19% de NH4Cl. A relação (Na + K/Cl foi 3,46; 4,46; 5,46; e 6,46, respectivamente. No primeiro experimento, o maior consumo alimentar foi observado nas aves alimentadas com dietas contendo 0,30% de NaCl. As aves que consumiram KCl apresentaram melhor conversão alimentar. Foi observado aumento no fósforo e pH do plasma sangüíneo. Aves que receberam dietas em que a relação (Na +K/Cl foi de 5,46 apresentaram maiores níveis de fósforo no plasma sangüíneo. O aumento do pH no plasma sangüíneo foi observado em aves que receberam dietas com relações de (Na + K/Cl de 4,46 e 6,46. No segundo experimento, o peso do ovo diminuiu com o aumento do NaHCO3 da dieta.

  13. Produção, composição do leite e constituintes sangüíneos de cabras alimentadas com diferentes volumosos Production, milk composition and blood parameters in goats fed different forages

    Directory of Open Access Journals (Sweden)

    L.R. Ribeiro

    2008-12-01

    Full Text Available Utilizaram-se nove cabras da raça Saanen, para estudar o efeito de dietas compostas por três diferentes fontes de volumosos, feno de alfafa, silagem de milho e feno de aveia, sobre a ingestão de matéria seca, produção e composição do leite e sobre os constituintes sangüíneos, glicose e uréia plasmáticas, em triplo quadrado latino 3x3. Os consumos de matéria seca e proteína bruta dos animais alimentados com feno de alfafa foram mais altos que os à base de silagem de milho (P0,05 das dietas sobre a produção diária de leite (kg/dia, sobre os teores (% de gordura, proteína, lactose e sólidos totais e sobre a contagem de células somáticas (cels/mlx1000. Os animais que consumiram feno de alfafa produziram maiores quantidades (P0,05. Os resultados indicaram que a fonte de volumoso, em rações isoenergéticas e isoproteicas, afeta o desempenho dos animais pela alteração no consumo de MS e PB e produção dos constituintes do leite (kg/dia.Nine Saanen dairy goats, consuming diets composed of three different sources of roughage (alfalfa hay, corn silage, and oat hay were used to study the effect of those diets on the ingestion of dry matter (DM, on milk production, milk composition, and plasmatic glucose and urea levels. The experimental design was a triple latin square 3x3. The intakes of DM and crude protein by the animals fed on alfalfa hay were higher than those fed ration based on corn silage (P0.05 of the diets on the daily milk production and on the fat, protein, lactose, and total solids contents, and on the somatic cells count (SCC, but those cows that received diets with alfalfa hay produced higher amounts (g/day (P0.05. It can be concluded that the forage sources affect the animal performance from changes in both DM and CP intakes and production of milk components (kg/day.

  14. Når troen bliver til sang

    DEFF Research Database (Denmark)

    Nielsen, Kirsten

    2009-01-01

    I anmeldelsen fremhæver jeg, at Selander i denne artikelsamling både beskæftiger sig med salmeteksterne og med melodierne. Denne dobbeltkompetence er usædvanlig hos en litteraturforsker. Artiklerne giver et fint indblik i svensk salmetradition samt i komponisternes arbejde med melodierne. Selande...

  15. ARSITEKTUR "GUNA DAN CITRA" SANG ROMO MANGUN

    Directory of Open Access Journals (Sweden)

    IN MEMORIAM : YUSUF BILYARTA MANGUNWIJAYA

    1999-01-01

    Full Text Available Yusuf Bilyarta Mangunwijaya is not only recognized as a pastor but also as a cultural observer, writer and architect. The architectural works he produced even touch the marginal people. The work does not only result in the physical building but also the total work of human development, "use" and "image". World Architecture never escapes from Vitruvius trilogy saying : Firmitas, Utilitas and Venustas. In his amazing writing, Mangunwijaya offered a distillation of trilogy (three categories into two categories, 'use' and 'image'. This writing is going to impart how the distillation of three categories becomes a 'two-categories. Abstract in Bahasa Indonesia : Yusuf Bilyarta Mangunwijaya tidak saja dikenal sebagai seorang Pastor, tetapi dia juga seorang budayawan, sastrawan, bahkan arsitek. Karya arsitekturnya menyentuh bahkan sampai ke mereka-mereka yang dipinggirkan (kaum marjinal. Karya arsitekturnya tidak saja sebuah sosok bangunan, tetapi sekaligus karya total dengan pembangunan manusianya, "Guna" dan "Citra". Arsitektur dunia tidak dapat melepaskan diri dari Trilogi Vitruvius: Firmitas, utilitas dan venustas. Dalam karya tulisnya yang luarbiasa, Romo Mangunwijaya menyingkatnya hanya dwilogi saja, Guna dan Citra. Tulisan ini akan membahas bagaimana perasan trilogi itu menjadi dwilogi saja. Kata kunci: Mangunwijaya, Vitruvius, guna, citra.

  16. 3Corners of the World / Joosep Sang

    Index Scriptorium Estoniae

    Sang, Joosep

    2009-01-01

    Arvustused : Robert Jürjendal, Petri Kuljuntausta, David Rothenberg. 3Corners of the World. [Tallinn] : Terra Nova Music, 2008. Nadia ja Fragile. Uhke ali. [Tallinn] : Nadia & Fragile, 2008. UMA. Civitas Soli. [Tallinn] : Elwood, 2008. Uutest heliplaatidest

  17. Reference values for chinchilla (Chinchilla laniger blood cells and serum biochemical parameters Valores de referência para os parâmetros das células e bioquímica sangüínea da chinchila (Chinchilla laniger

    Directory of Open Access Journals (Sweden)

    Tális de Oliveira Silva

    2005-06-01

    Full Text Available Raising chinchilla (Chinchilla laniger for commercial purpose has increased significantly; however, hematological and serum biochemical reference values have not yet been determined for chinchillas raised in south Brazil. Establishing blood cells and serum biochemistry reference values might be helpful to evaluate health status of chinchillas and might be used as a tool by clinicians. The purpose of this study was to determine the reference values for blood cells and serum biochemistry of Chinchilla laniger. Blood samples were collected by cardiac puncture from 16 adult males, at the time they were killed to remove the fur coat, and from 8 adult males anesthetized with ketamine and xylazine. Blood cell counts and serum biochemistry analysis were performed using standard techniques and the results were expressed as mean ± SEM. Analysis of blood parameters from post-mortem cardiac punctured and from anesthetized chinchillas indicated that blood samples from anesthetized chinchillas had higher PCV, Hemoglobin, MCHC and WBC (P A criação de chinchila (Chinchilla laniger com objetivos comerciais tem crescido muito nos últimos anos. No entanto, os valores de referência para os parâmetros hematológicos e bioquímicos não foram ainda determinados para chinchilas criados no sul do Brasil. O estabelecimento dos valores de referência para esses parâmetros pode servir de auxílio para a avaliação da saúde das chinchilas e servir de auxílio diagnóstico para o clínico. Esse estudo teve como objetivo determinar os valores de referência das células e da bioquímica sangüínea da Chinchilla laniger. As amostras de sangue foram coletadas por meio de punção cardíaca de 16 machos adultos no momento em que os animais foram mortos para remoção da pele, e de 8 machos adultos após anestesia com xylazina e ketamina. A contagem das células sangüíneas e a análise dos parâmetros bioquímicos foram feitas utilizando-se métodos padronizados em

  18. Associação entre pressão sangüínea com sinais e sintomas de dor orofacial e disfunção temporomandibular = Relationship between blood pressure with signs and symptons of orofacial pain and temporomandibular disorders

    Directory of Open Access Journals (Sweden)

    Haesbaert, Bibiana M.

    2005-01-01

    Full Text Available O objetivo deste estudo é o de determinar a função da pressão sangüínea como possível fator diagnóstico em pacientes com desordens temporomandibulares (DTM. Foram examinadas as pressões sanguíneas de mulheres entre 17 e 40 anos de idade, com sinais e sintomas de desordens temporomandibulares (DTM, versus grupo controle (sem DTM, usando o aparelho “Digital Blood Pressure Meter” da A&D Engineering, Inc. Sendo assim, observou-se uma tendência à hipotensão nos pacientes com DTM em relação ao grupo controle

  19. Discrete Element Modeling

    Energy Technology Data Exchange (ETDEWEB)

    Morris, J; Johnson, S

    2007-12-03

    The Distinct Element Method (also frequently referred to as the Discrete Element Method) (DEM) is a Lagrangian numerical technique where the computational domain consists of discrete solid elements which interact via compliant contacts. This can be contrasted with Finite Element Methods where the computational domain is assumed to represent a continuum (although many modern implementations of the FEM can accommodate some Distinct Element capabilities). Often the terms Discrete Element Method and Distinct Element Method are used interchangeably in the literature, although Cundall and Hart (1992) suggested that Discrete Element Methods should be a more inclusive term covering Distinct Element Methods, Displacement Discontinuity Analysis and Modal Methods. In this work, DEM specifically refers to the Distinct Element Method, where the discrete elements interact via compliant contacts, in contrast with Displacement Discontinuity Analysis where the contacts are rigid and all compliance is taken up by the adjacent intact material.

  20. Bomba sangüínea espiral: concepção, desenvolvimento e aplicação clínica de projeto original Spiral blood pump: conception, development and clinical application of the original project

    Directory of Open Access Journals (Sweden)

    Jarbas J. Dinkhuysen

    2007-06-01

    Full Text Available INTRODUÇÃO: O trabalho aborda projeto original relativo à concepção, ao desenvolvimento e à aplicação clínica de bomba sangüínea que associa forças centrífuga e axial de propulsão hidráulica, baseada no princípio de Arquimedes, denominada Bomba Espiral (BE, tendo recebido Patente Nacional e Relatório Preliminar Internacional categorizando-a como invento. MÉTODO: Visa avaliar sua capacidade hidrodinâmica e seu impacto aos elementos figurados do sangue por meio de testes "in vitro", como Eficiência Hidrodinâmica, Hemólise Normalizada e Visibilização de Escoamento, e, nos testes "in vivo" experimentais, feitos em carneiros submetidos a Circulação Extracorpórea (CEC, e clínico, em 43 pacientes submetidos a operações cardíacas com CEC, nas quais o elemento propulsor foi a BE. RESULTADOS: Na dependência da distância entre o rotor e a carcaça (fenda da bomba pôde-se observar que com 1,5 mm gerou escoamento ao redor de 9 L/min, pressão acima de 400mmHg com 1500 rotações por minuto (rpm, índices de Hemólise Normalizada não superiores a 0,0375 g/100l em condições de alto fluxo e pressão, e pelo estudo de Visibilização do Escoamento no interior da bomba não se detectou áreas de estagnação ou turbulência na entrada, saída e junto à extremidade dos fusos. Nas pesquisas "in vivo" experimentais em ovinos em CEC por 6 horas a BE foi capaz de manter parâmetros pressóricos adequados e Hemoglobina Livre entre 16,36 mg% e 44,90 mg%. Durante sua aplicação em cirurgias cardíacas com CEC, num grupo de 43 pacientes, pôde-se constatar variações pré e pós-CEC, na Hemoglobina Livre de 9,34 a 44,16 mg%, no Fibrinogênio, de 236,65 a 547,26 mg%, na contagem do número de Plaquetas de 152,465 a 98,139, Desidrogenase Láctica, de 238,12 a 547,26 mg%, com tempo de coagulação ativada ao redor de 800 seg. quando em CEC. CONCLUSÕES: A BE mostrou resolutividade por gerar escoamento e pressão adequados, sem causar

  1. Metabolismo miocárdico após cardioplegia sangüínea hipotérmica retrógrada contínua Myocardial metabolism after hypothermic retrograde continuous blood cardioplegia

    Directory of Open Access Journals (Sweden)

    Claudio G. SOBROSA

    2000-09-01

    Full Text Available CASUÍSTICA E MÉTODOS: Realizamos uma análise metabólica da cardioplegia sangüínea hipotérmica retrógrada contínua em um estudo prospectivo de 15 pacientes consecutivos encaminhados para operação eletiva de revascularização miocárdica. Os critérios de inclusão foram doença coronária bi ou triarterial e função ventricular preservada (FE > 40%. Os critérios de exclusão foram angina instável, diabéticos insulino-dependentes e operações associadas. Três pacientes foram excluídos do trabalho (operação associada e deslocamento do cateter de cardioplegia retrógrada. Amostras de sangue arterial e do seio coronário foram simultaneamente colhidas: antes do início da CEC, na abertura da aorta e com 10, 30 e 60 minutos de reperfusão, para análise do conteúdo de oxigênio e da concentração de lactato. Quatro biópsias miocárdicas foram obtidas do ápice do ventrículo esquerdo: (1 após instalação da CEC (mas antes do pinçamento aórtico, (2 imediatamente após o término da indução cardioplégica, (3 antes do despinçamento aórtico e (4 com 30 minutos de reperfusão, para análise dos níveis de ATP, ADP, AMP e lactato no miocárdio. A isoenzima CK-MB foi analisada no sangue venoso. RESULTADOS: Não houve mortalidade no grupo. Houve uma diminuição da extração artério-venosa do lactato e do oxigênio pelo coração durante a reperfusão, somente havendo uma recuperação parcial ao final de 60 minutos de reperfusão. O ATP e os outros nucleotídeos tiveram os seus níveis mantidos no miocárdio durante o pinçamento aórtico, mas estes caíram nos primeiros 30 minutos de reperfusão. O lactato acumulou-se no músculo cardíaco durante o pinçamento aórtico e diminuiu durante a reperfusão. Houve um aumento da enzima CK-MB, principalmente entre a terceira e sexta horas de pós-operatório. CONCLUSÕES: Do ponto de vista metabólico, o método não evitou o metabolismo anaeróbico durante o período de pin

  2. Chemistry of the elements

    International Nuclear Information System (INIS)

    Greenwood, N.N.; Earnshaw, A.

    1984-01-01

    This textbook presents an account of the chemistry of the elements for both undergraduate and postgraduate students. It covers not only the 'inorganic' chemistry of the elements, but also analytical, theoretical, industrial, organometallic;, bio-inorganic and other areas of chemistry which apply. The following elements of special nuclear interest are included: Rb, Cs, Fr, Sr, Ba, Ra, Po, At, Rn, Sc, Y, Zr, Hf, V, Nb, Ta, Mo, Tc, Ru, the Lanthanide Elements, the Actinide Elements. (U.K.)

  3. Data Element Registry Services

    Data.gov (United States)

    U.S. Environmental Protection Agency — Data Element Registry Services (DERS) is a resource for information about value lists (aka code sets / pick lists), data dictionaries, data elements, and EPA data...

  4. Basic Finite Element Method

    International Nuclear Information System (INIS)

    Lee, Byeong Hae

    1992-02-01

    This book gives descriptions of basic finite element method, which includes basic finite element method and data, black box, writing of data, definition of VECTOR, definition of matrix, matrix and multiplication of matrix, addition of matrix, and unit matrix, conception of hardness matrix like spring power and displacement, governed equation of an elastic body, finite element method, Fortran method and programming such as composition of computer, order of programming and data card and Fortran card, finite element program and application of nonelastic problem.

  5. Radiolabelled cellular blood elements

    International Nuclear Information System (INIS)

    Sinzinger, H.

    1990-01-01

    This book reports on radiolabelled cellular blood elements, covering new advances made during the past several years, in particular the use of Tc-99 as a tracer for blood elements. Coverage extends to several radiolabelled monoclonal antibodies that are specific for blood components and may label blood elements in vivo

  6. Rare (Earth Elements [score

    Directory of Open Access Journals (Sweden)

    Camilo Méndez

    2014-12-01

    Full Text Available Rare (Earth Elements is a cycle of works for solo piano. The cycle was inspired by James Dillon’s Book of Elements (Vol. I-V. The complete cycle will consist of 14 pieces; one for each selected rare (earth element. The chosen elements are Neodymium, Erbium, Tellurium, Hafnium, Tantalum, Technetium, Indium, Dysprosium, Lanthanium, Cerium, Europium, Terbium, Yttrium and Darmstadtium. These elements were selected due to their special atomic properties that in many cases make them extremely valuable for the development of new technologies, and also because of their scarcity. To date, only 4 works have been completed Yttrium, Technetium, Indium and Tellurium.

  7. Generalized finite elements

    International Nuclear Information System (INIS)

    Wachspress, E.

    2009-01-01

    Triangles and rectangles are the ubiquitous elements in finite element studies. Only these elements admit polynomial basis functions. Rational functions provide a basis for elements having any number of straight and curved sides. Numerical complexities initially associated with rational bases precluded extensive use. Recent analysis has reduced these difficulties and programs have been written to illustrate effectiveness. Although incorporation in major finite element software requires considerable effort, there are advantages in some applications which warrant implementation. An outline of the basic theory and of recent innovations is presented here. (authors)

  8. Elements beyond uranium

    International Nuclear Information System (INIS)

    Seaborg, G.T.; Loveland, W.D.

    1990-01-01

    This book is the 12th volume in a series on transuranium elements. Varied techniques for production of these elements, the methods used in the identification, and the exquisitely refined microchemical techniques required to deal wth samples sometimes involving only a few atoms are described in detail. The chapter on synthesis of the new elements is liberally laced with reminiscences of the proud progenitors as well as the criteria for the discovery of a new chemical element. The authors lament that the superheavy elements (elements in the region of atomic number 114) still elude detection even though their creation should be possible, and some, at least, should survive long enough to be detected. One chapter in the book is devoted to practical applictions of uranium, and the transuranic elements

  9. Efeitos da farinha de folhas de mandioca sobre a peroxidação lipídica, o perfil lipídico sangüíneo e o peso do fígado de ratos Effects of cassava leaf flour on lipidic peroxidation, blood lipidic profile and liver weight of rats

    Directory of Open Access Journals (Sweden)

    Daniela Séfora de Melo

    2007-04-01

    Full Text Available Sabe-se que polifenóis e saponinas apresentam efeitos antioxidante e hipolipidêmico, respectivamente. Como folhas de mandioca contêm estas substâncias, foi investigado o efeito de dietas contendo a farinha de folhas de mandioca (FFM sobre a peroxidação lipídica, o perfil lipídico sangüíneo e o peso do fígado de ratos. Para isto, folhas maduras de mandioca (Manihot esculenta Crantz cv. Cacao foram secas em estufa ventilada a 30-35 ºC e trituradas sem os pecíolos. Um ensaio biológico, com 32 ratos machos Wistar, foi conduzido por um período de 7 semanas com quatro tratamentos: dieta controle e dietas contendo 5%, 10% e 15% de FFM, sendo todas suplementadas com 1% de colesterol. As dietas se apresentaram isoenergéticas e contendo os mesmos níveis de proteína digestível e fibras. Foi observado que dietas contendo FFM não apresentaram efeitos significativos sobre o perfil lipídico sangüíneo e sobre as variáveis de desempenho, mas contribuiram para o aumento no peso do fígado. Já as dietas contendo 10% e 15% de FFM foram associadas à redução nos teores plasmáticos de substâncias reativas ao ácido tiobarbitúrico.It is well known that polyphenols and saponins present antioxidant and hypolipidemic effects, respectively. As cassava leaves contains these substances, the effects of diets supplemented with cassava leaf flour (CLF on lipidic peroxidation, blood lipid profile and liver weight of rats were investigated. Therefore, ripe cassava leaves (Manihot esculenta Crantz cv. Cacao were dried in a ventilated oven at 30-35 ºC and ground without the petioles. A biological assay was conducted during 7 weeks with 32 Wistar male rats submitted to four treatments: control diet and diets containing 5%, 10% and 15% CLF, all supplemented with 1% cholesterol. Diets were isoenergetic and contained the same levels of digestible protein, and fibers. It was observed that diets containing CLF presented no significant effect on blood

  10. Limitless Analytic Elements

    Science.gov (United States)

    Strack, O. D. L.

    2018-02-01

    We present equations for new limitless analytic line elements. These elements possess a virtually unlimited number of degrees of freedom. We apply these new limitless analytic elements to head-specified boundaries and to problems with inhomogeneities in hydraulic conductivity. Applications of these new analytic elements to practical problems involving head-specified boundaries require the solution of a very large number of equations. To make the new elements useful in practice, an efficient iterative scheme is required. We present an improved version of the scheme presented by Bandilla et al. (2007), based on the application of Cauchy integrals. The limitless analytic elements are useful when modeling strings of elements, rivers for example, where local conditions are difficult to model, e.g., when a well is close to a river. The solution of such problems is facilitated by increasing the order of the elements to obtain a good solution. This makes it unnecessary to resort to dividing the element in question into many smaller elements to obtain a satisfactory solution.

  11. The solar element

    DEFF Research Database (Denmark)

    Kragh, Helge

    2009-01-01

    of the nineteenth century. In the modest form of a yellow spectral line known as D3, 'helium' was sometimes supposed to exist in the Sun's atmosphere, an idea which is traditionally ascribed to J. Norman Lockyer. Did Lockyer discover helium as a solar element? How was the suggestion received by chemists, physicists...... and astronomers in the period until the spring of 1895, when William Ramsay serendipitously found the gas in uranium minerals? The hypothetical element helium was fairly well known, yet Ramsay's discovery owed little or nothing to Lockyer's solar element. Indeed, for a brief while it was thought that the two...... elements might be different. The complex story of how helium became established as both a solar and terrestrial element involves precise observations as well as airy speculations. It is a story that is unique among the discovery histories of the chemical elements....

  12. The synthetic elements

    Energy Technology Data Exchange (ETDEWEB)

    Hoffman, D.C.

    1990-05-01

    Prior to 1940, the heaviest element known was uranium, discovered in 1789. Since that time the elements 93 through 109 have been synthesized and identified and the elements 43, 61, 85, and 87 which were missing form the periodic tables of the 1930's have been discovered. The techniques and problems involved in these discoveries and the placement of the transuranium elements in the periodic table will be discussed. The production and positive identification of elements heavier than Md (Z=101), which have very short half-lives and can only be produced an atom-at-a-time, are very difficult and there have been controversies concerning their discovery. Some of the new methods which have been developed and used in these studies will be described. The prospects for production of still heavier elements will be considered.

  13. The synthetic elements

    International Nuclear Information System (INIS)

    Hoffman, D.C.

    1990-05-01

    Prior to 1940, the heaviest element known was uranium, discovered in 1789. Since that time the elements 93 through 109 have been synthesized and identified and the elements 43, 61, 85, and 87 which were missing form the periodic tables of the 1930's have been discovered. The techniques and problems involved in these discoveries and the placement of the transuranium elements in the periodic table will be discussed. The production and positive identification of elements heavier than Md (Z=101), which have very short half-lives and can only be produced an atom-at-a-time, are very difficult and there have been controversies concerning their discovery. Some of the new methods which have been developed and used in these studies will be described. The prospects for production of still heavier elements will be considered

  14. Fuel element loading system

    International Nuclear Information System (INIS)

    Arya, S.P; s.

    1978-01-01

    A nuclear fuel element loading system is described which conveys a plurality of fuel rods to longitudinal passages in fuel elements. Conveyor means successively position the fuel rods above the longitudinal passages in axial alignment therewith and adapter means guide the fuel rods from the conveyor means into the longitudinal passages. The fuel elements are vibrated to cause the fuel rods to fall into the longitudinal passages through the adapter means

  15. Elements in biological AMS

    International Nuclear Information System (INIS)

    Vogel, J.S.; McAninch, J.; Freeman, S.

    1996-08-01

    AMS (Accelerator Mass Spectrometry) provides high detection sensitivity for isotopes whose half-lives are between 10 years and 100 million years. 14 C is the most developed of such isotopes and is used in tracing natural and anthropogenic organic compounds in the Earth's biosphere. Thirty-three elements in the main periodic table and 17 lanthanides or actinides have long lived isotopes, providing potential tracers for research in elemental biochemistry. Overlap of biologically interesting heavy elements and possible AMS tracers is discussed

  16. Analogs for transuranic elements

    International Nuclear Information System (INIS)

    Weimer, W.C.; Laul, J.C.; Kutt, J.C.

    1981-01-01

    A combined theoretical and experimental approach is being used to estimate the long-term environmental and biogeochemical behaviors of selected transuranic elements. The objective of this research is to estimate the effect that long-term (hundreds of years) environmental weathering has on the behavior of the transuranic elements americium and curium. This is achieved by investigating the actual behavior of naturally occurring rare earth elements, especially neodymium, that serve as transuranic analogs. Determination of the analog element behavior provides data that can be used to estimate the ultimate availability to man of transuranic materials released into the environment

  17. Chemistry of superheavy elements

    International Nuclear Information System (INIS)

    Schaedel, M.

    2012-01-01

    The chemistry of superheavy elements - or transactinides from their position in the Periodic Table - is summarized. After giving an overview over historical developments, nuclear aspects about synthesis of neutron-rich isotopes of these elements, produced in hot-fusion reactions, and their nuclear decay properties are briefly mentioned. Specific requirements to cope with the one-atom-at-a-time situation in automated chemical separations and recent developments in aqueous-phase and gas-phase chemistry are presented. Exciting, current developments, first applications, and future prospects of chemical separations behind physical recoil separators ('pre-separator') are discussed in detail. The status of our current knowledge about the chemistry of rutherfordium (Rf, element 104), dubnium (Db, element 105), seaborgium (Sg, element 106), bohrium (Bh, element 107), hassium (Hs, element 108), copernicium (Cn, element 112), and element 114 is discussed from an experimental point of view. Recent results are emphasized and compared with empirical extrapolations and with fully-relativistic theoretical calculations, especially also under the aspect of the architecture of the Periodic Table. (orig.)

  18. Assessment of the Total Body Burden of Caesium-137 in Humans by the Analysis of Blood; Determination de la Charge Corporelle de Cesium 137 chez l'Homme, par Analyse Du Sang; 041e 041f 0420 0415 0414 ; Evaluacion de la Carga Corporal Total de Cesio-137 en el Hombre por Analisis de Sangre

    Energy Technology Data Exchange (ETDEWEB)

    Yamagata, N. [Institute of Public Health, Tokyo (Japan)

    1964-11-15

    'anthropogammametres et ceux-ci sont des appareils fixes; dans ces conditions, il n'est pas facile de determiner la charge moyenne pour une population. Toutefois, la collecte de tissus musculaires ainsi preleves est une operation compliquee, en outre, cette methode n'est pas satisfaisante, car il faudrait en realite posseder des echantillons preleves immediatement apres la mort. Etant donne que l'on a seulement besoin de donnees susceptibles d'etre utilisees pour determiner la charge moyenne de cesium 137 pour une population donnee et qu'il n'est pas necessaire de connaitre les valeurs individuelles, il suffit d'avoir des echantillons globaux provenant du plus grand nombre possible d'individus. Aussi a-t-on pense que des echantillons de sang pur pourraient remplacer le mieux les tissus musculaires, parce qu'il existe deja un reseau de ramassage du sang, ramife dans tout le Japon (notamment 47 banques du sang autorisees et une centaine d'hopitaux). On procede deja, a l'Institut national de la sante, de Tokyo, a des enquetes par sondages pour verifier les caracteristiques du sang citrate. Environ 500 ampoules sont examinees chaque annee; cet echantillon represente plus de trois millions de donneurs repartis dans l'ensemble du pays. Pour cette verification, on n'utilise que la moitie du contenu des ampoules et on met en stock l'autre moitie pour qu'elle serve a preparer un echantillon global en vue de la determination de la charge moyenne de cesium 137, Le sang etant incinere, on dose le cesium stable contenu dans les cendres par une methode d'activation par les neutrons. Des resultats, on deduit le rapport entre la concentration de cette substance dans le sang pur et la quantite totale contenue dans le corps (1,4 mg pour un homme de 70 kg). Ce chiffre sera le meme que pour le cesium 137 dans des conditions d'equilibre. On a compare les resultats obtenus depuis juin 1963 par cette methode avec les resultats trouves par l'analyse de tissus musculaires pendant la meme periode. On a constate

  19. Seagrass leaf element content

    NARCIS (Netherlands)

    Vonk, J.A.; Smulders, Fee O.H.; Christianen, Marjolijn J.A.; Govers, Laura L.

    2017-01-01

    Knowledge on the role of seagrass leaf elements and in particular micronutrients and their ranges is limited. We present a global database, consisting of 1126 unique leaf values for ten elements, obtained from literature and unpublished data, spanning 25 different seagrass species from 28 countries.

  20. Berkeley new element program

    International Nuclear Information System (INIS)

    Ghiorso, A.

    1975-09-01

    The work done with element 106 is reviewed, and a new experiment which bears on the properties of the isotope of mass 260 with atomic number 104 is discussed. It is noted that in the case of element 106 a link is demonstrated to the granddaughter as well as the daughter

  1. Elemental Food for Thought

    Science.gov (United States)

    Cady, Susan

    2005-01-01

    One of the first tasks students learn in chemistry is to pronounce and spell the names of elements and learn their corresponding chemical symbols. Repetitive oral recitation is commonly used to learn this information, but games and puzzles can make this task creative, variable, and fun. Elemental Food for Thought is a puzzlelike activity that…

  2. Nuclear fuel element

    International Nuclear Information System (INIS)

    Mogard, J.H.

    1977-01-01

    A nuclear fuel element is disclosed for use in power producing nuclear reactors, comprising a plurality of axially aligned ceramic cylindrical fuel bodies of the sintered type, and a cladding tube of metal or metal alloys, wherein said cladding tube on its cylindrical inner surface is provided with a plurality of slightly protruding spacing elements distributed over said inner surface

  3. Proceedings of transuranium elements

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    The identification of the first synthetic elements was established by chemical evidence. Conclusive proof of the synthesis of the first artificial element, technetium, was published in 1937 by Perrier and Segre. An essential aspect of their achievement was the prediction of the chemical properties of element 43, which had been missing from the periodic table and which was expected to have properties similar to those of manganese and rhenium. The discovery of other artificial elements, astatine and francium, was facilitated in 1939-1940 by the prediction of their chemical properties. A little more than 50 years ago, in the spring of 1940, Edwin McMillan and Philip Abelson synthesized element 93, neptunium, and confirmed its uniqueness by chemical means. On August 30, 1940, Glenn Seaborg, Arthur Wahl, and the late Joseph Kennedy began their neutron irradiations of uranium nitrate hexahydrate. A few months later they synthesized element 94, later named plutonium, by observing the alpha particles emitted from uranium oxide targets that had been bombarded with deuterons. Shortly thereafter they proved that is was the second transuranium element by establishing its unique oxidation-reduction behavior. The symposium honored the scientists and engineers whose vision and dedication led to the discovery of the transuranium elements and to the understanding of the influence of 5f electrons on their electronic structure and bonding. This volume represents a record of papers presented at the symposium

  4. Discovery of element 112

    Energy Technology Data Exchange (ETDEWEB)

    Hofmann, S. [GSI, Darmstadt (Germany)

    1996-12-31

    The new elements 110, 111, and 112 were synthesized and unambiguously identified in experiments at SHIP. Due to strong shell effects the dominant decay mode is not fission, but emission of alpha particles. Theoretical investigations predict that maximum shell effects should exist in nuclei near proton number 114 and neutron number 184. Measurements give hope that isotopes of element 114 close to the island of spherical Superheavy Elements could be produced by fusion reactions using {sup 118}Pb as target. systematic studies of the reaction cross-sections indicate that transfer of nucleons is the important process to initiate the fusion.

  5. Nuclear fuel element

    International Nuclear Information System (INIS)

    Grossman, L.N.; Levin, H.A.

    1975-01-01

    A nuclear fuel element has disposed therein an alloy having the essential components of nickel, titanium and zirconium, and the alloy reacts with water, water vapor and reactive gases at reactor ambient temperatures. The alloy is disposed in the plenum of the fuel element in the form of particles in a hollow gas permeable container having a multiplicity of openings of size smallr than the size of the particles. The container is preferably held in the spring in the plenum of the fuel element. (E.C.B.)

  6. Elemental diffusion in stars

    International Nuclear Information System (INIS)

    Michaud, Georges; Montmerle, Thierry

    1977-01-01

    This paper is dealing with the origin of the elements in the universe. The scheme of nucleosynthesis is kept to explain the stellar generation of helium, carbon, etc... from the initial hydrogen; but a nonlinear theory is then elaborated to account for the anomalous abundances which were observed. The chemical elements would diffuse throughout the outer layers of a star under the action of the opposite forces of gravitation and radiation. This theory, with completing the nucleosynthesis, would contribute to give a consistent scheme of the elemental origin and abundances [fr

  7. Bridge element deterioration rates.

    Science.gov (United States)

    2008-10-01

    This report describes the development of bridge element deterioration rates using the NYSDOT : bridge inspection database using Markov chains and Weibull-based approaches. It is observed : that Weibull-based approach is more reliable for developing b...

  8. 2. Transuranic elements

    International Nuclear Information System (INIS)

    Anon.

    1975-01-01

    Methods of sample collection, sample storage, sample procedures and radioanalytical procedures for transuranic elements in marine environment are reviewed and recommended. Alpha spectrometry and scintillation techniques are used for measurement of isotopic content. Separation processes for samples are described

  9. Heavy element research

    International Nuclear Information System (INIS)

    Anon.

    1976-01-01

    Heavy element research activities in metallurgy and ceramics during 1976 at Lawrence Berkeley Laboratory are reviewed. Topics include: microstructure, properties and alloy design; ceramic alloy program; high resolution and high voltage electron microscopy; and powder metallurgy

  10. Nuclear reactor fuel elements

    International Nuclear Information System (INIS)

    Hindle, E.D.

    1981-01-01

    An array of rods comprising zirconium alloy sheathed nuclear fuel pellets assembled to form a fuel element for a pressurised water reactor is claimed. The helium gas pressure within each rod differs substantially from that of its closest neighbours

  11. Nuclear reactor fuel elements

    International Nuclear Information System (INIS)

    Hindle, E.D.

    1984-01-01

    The fuel elements for a pressurised water reactor comprise arrays of rods of zirconium alloy sheathed nuclear fuel pellets. The helium gas pressure within each rod differs substantially from that of its closest neighbours

  12. Transposable elements in cancer.

    Science.gov (United States)

    Burns, Kathleen H

    2017-07-01

    Transposable elements give rise to interspersed repeats, sequences that comprise most of our genomes. These mobile DNAs have been historically underappreciated - both because they have been presumed to be unimportant, and because their high copy number and variability pose unique technical challenges. Neither impediment now seems steadfast. Interest in the human mobilome has never been greater, and methods enabling its study are maturing at a fast pace. This Review describes the activity of transposable elements in human cancers, particularly long interspersed element-1 (LINE-1). LINE-1 sequences are self-propagating, protein-coding retrotransposons, and their activity results in somatically acquired insertions in cancer genomes. Altered expression of transposable elements and animation of genomic LINE-1 sequences appear to be hallmarks of cancer, and can be responsible for driving mutations in tumorigenesis.

  13. Divergent picornavirus IRES elements

    DEFF Research Database (Denmark)

    Belsham, Graham

    2009-01-01

    Internal ribosome entry site (IRES) elements were first identified about 20 years ago within the 5' untranslated region of picornavirus RNAs. They direct a cap-independent mechanism of translation initiation on the viral RNA. Within the picornavirus family it is now known that there are four...... classes of IRES element which vary in size (450-270nt), they also have different, complex, secondary structures and distinct requirements for cellular proteins to allow them to function. This review describes the features of each class of picornavirus IRES element but focuses on the characteristics...... of the most recently described group, initially identified within the porcine teschovirus-1 RNA, which has strong similarities to the IRES elements from within the genomes of hepatitis C virus and the pestiviruses which are members of the flavivirus family. The selection of the initiation codon...

  14. Novel porcine repetitive elements

    Directory of Open Access Journals (Sweden)

    Nonneman Dan J

    2006-12-01

    Full Text Available Abstract Background Repetitive elements comprise ~45% of mammalian genomes and are increasingly known to impact genomic function by contributing to the genomic architecture, by direct regulation of gene expression and by affecting genomic size, diversity and evolution. The ubiquity and increasingly understood importance of repetitive elements contribute to the need to identify and annotate them. We set out to identify previously uncharacterized repetitive DNA in the porcine genome. Once found, we characterized the prevalence of these repeats in other mammals. Results We discovered 27 repetitive elements in 220 BACs covering 1% of the porcine genome (Comparative Vertebrate Sequencing Initiative; CVSI. These repeats varied in length from 55 to 1059 nucleotides. To estimate copy numbers, we went to an independent source of data, the BAC-end sequences (Wellcome Trust Sanger Institute, covering approximately 15% of the porcine genome. Copy numbers in BAC-ends were less than one hundred for 6 repeat elements, between 100 and 1000 for 16 and between 1,000 and 10,000 for 5. Several of the repeat elements were found in the bovine genome and we have identified two with orthologous sites, indicating that these elements were present in their common ancestor. None of the repeat elements were found in primate, rodent or dog genomes. We were unable to identify any of the replication machinery common to active transposable elements in these newly identified repeats. Conclusion The presence of both orthologous and non-orthologous sites indicates that some sites existed prior to speciation and some were generated later. The identification of low to moderate copy number repetitive DNA that is specific to artiodactyls will be critical in the assembly of livestock genomes and studies of comparative genomics.

  15. Fuel element store

    International Nuclear Information System (INIS)

    Wieser, R.

    1987-01-01

    The spherical fuel elements are stored dry in cans. The cans themselves are stacked in parallel storage shafts, which are combined into a rectangular storage space. The storage space is made earthquake-proof by surrounding it with concrete. It consists of a ceiling assembled from several steel parts, which is connected to the floor by support elements. A cooling air ventilation station supplies the individual storage shaft and therefore the cans with cooling air via incoming and outgoing pipes. (DG) [de

  16. Intrusion detection system elements

    International Nuclear Information System (INIS)

    Eaton, M.J.; Mangan, D.L.

    1980-09-01

    This report highlights elements required for an intrusion detection system and discusses problems which can be encountered in attempting to make the elements effective. Topics discussed include: sensors, both for exterior detection and interior detection; alarm assessment systems, with the discussion focused on video assessment; and alarm reporting systems, including alarm communication systems and dislay/console considerations. Guidance on careful planning and design of a new or to-be-improved system is presented

  17. Structural elements design manual

    CERN Document Server

    Draycott, Trevor

    2012-01-01

    Gives clear explanations of the logical design sequence for structural elements. The Structural Engineer says: `The book explains, in simple terms, and with many examples, Code of Practice methods for sizing structural sections in timber, concrete,masonry and steel. It is the combination into one book of section sizing methods in each of these materials that makes this text so useful....Students will find this an essential support text to the Codes of Practice in their study of element sizing'.

  18. Atoms, molecules & elements

    CERN Document Server

    Graybill, George

    2007-01-01

    Young scientists will be thrilled to explore the invisible world of atoms, molecules and elements. Our resource provides ready-to-use information and activities for remedial students using simplified language and vocabulary. Students will label each part of the atom, learn what compounds are, and explore the patterns in the periodic table of elements to find calcium (Ca), chlorine (Cl), and helium (He) through hands-on activities.

  19. Nuclear fuel element

    International Nuclear Information System (INIS)

    Penrose, R.T.; Thompson, J.R.

    1976-01-01

    A method of protecting the cladding of a nuclear fuel element from internal attack and a nuclear fuel element for use in the core of a nuclear reactor are disclosed. The nuclear fuel element has disposed therein an additive of a barium-containing material and the barium-containing material collects reactive gases through chemical reaction or adsorption at temperatures ranging from room temperature up to fuel element plenum temperatures. The additive is located in the plenum of the fuel element and preferably in the form of particles in a hollow container having a multiplicity of gas permeable openings in one portion of the container with the openings being of a size smaller than the size of the particles. The openings permit gases and liquids entering the plenum to contact the particles. The additive is comprised of elemental barium or a barium alloy containing one or more metals in addition to barium such as aluminum, zirconium, nickel, titanium and combinations thereof. 6 claims, 3 drawing figures

  20. Efeitos das cardioplegias sangüíneas hipotérmica e normotérmica nos substratos intracelulares em pacientes com corações hipertróficos The effect of cold and warm blood cardioplegia on intracellular substrates in patients with hypertrophic hearts

    Directory of Open Access Journals (Sweden)

    Walter J. GOMES

    2000-06-01

    Full Text Available OBJETIVOS: As cardioplegias sangüíneas normotérmica e hipotérmica, administradas de maneira anterógrada e intermitente, têm demonstrado serem eficientes na proteção miocárdica em cirurgias de revascularização miocárdica. Entretanto, pouco se conhece da eficiência dessas técnicas em corações hipertróficos. Dessa maneira, foram estudados seus efeitos nos substratos intracelulares miocárdicos em pacientes portadores de estenose aórtica, submetidos a cirurgia de troca valvar aórtica. CASUÍSTICA E MÉTODOS: A concentração intracelular miocárdica dos substratos (ATP, lactato, glutamato, aspartato e alanina foi medida em biópsias de ventrículo esquerdo de 20 pacientes submetidos a troca valvar aórtica, usando, como método de proteção miocárdica, cardioplegia sangüínea normotérmica (n=10 ou hipotérmica (n=10, administradas de forma anterógrada e intermitente. As biópsias foram retiradas 5 minutos após o início da circulação extracorpórea (controle, 30 minutos após o pinçamento aórtico (isquemia e 20 minutos após o despinçamento (reperfusão. RESULTADOS: Não houve alterações significantes na concentração intracelular dos substratos nas amostras coletadas durante o período isquêmico, em comparação ao controle. Na reperfusão, entretanto, houve significante queda nos valores de ATP e aminoácidos em ambos os grupos, em relação ao grupo controle. CONCLUSÃO: Os dados sugerem que ambos os protocolos de proteção miocárdica empregados não foram eficientes na proteção miocárdica de corações hipertróficos.OBJECTIVE: Warm intermittent blood cardioplegia has been shown to prevent the reperfusion damage seen when cold blood cardioplegia is used in patients undergoing coronary revascularization. Little is known on the effects of these two cardioplegic techniques on hypertrophic hearts. The aim of this study was to investigate the comparative effects of cold and warm antegrade blood cardioplegia in

  1. Avaliação do suprimento sangüíneo vascular pulmonar nos portadores de atresia pulmonar com comunicação interventricular e artérias colaterais sistêmico-pulmonares Assessment of the pulmonary vascular blood supply in patients with pulmonary atresia, ventricular septal defect, and aortopulmonary collateral arteries

    Directory of Open Access Journals (Sweden)

    Ulisses Alexandre Croti

    2005-01-01

    Full Text Available OBJETIVO: Analisar as características morfométricas das artérias pulmonares centrais e artérias colaterais sistêmico-pulmonares, avaliando a morfologia do suprimento sangüíneo vascular pulmonar, procurando estabelecer suas implicações no tratamento cirúrgico. MÉTODO: Entre janeiro/1990 e junho/2001, foram estudados 40 pacientes, incluíndo-se os que apresentavam estudo cineangiocardiográfico completo e prévio à primeira intervenção cirúrgica. Analisaram-se as características morfométricas das artérias pulmonares centrais e artérias colaterais sistêmico-pulmonares, assim como a distribuição da irrigação sangüínea nos pulmões. Calcularam-se os índices arterial pulmonar (IAAPP, arterial colateral sistêmico-pulmonar (IACSP e arterial neopulmonar total (IANPT = IAAPP + IACSP. O tratamento cirúrgico foi considerado paliativo (TP, paliativo definitivo (TPD e definitivo (TD. RESULTADOS: O TP foi predominante. Não houve diferenças estatisticamente significantes entre os pacientes com TP, TPD e TD, em relação ao IAAPP, IACSP e IANPT. Comparando o IAAPP e o IACSP, não houve diferença entre os índices para o TD (p=0,4309, o IACSP foi maior que o IAAPP para o TP (p=0,0176 e descritivamente também maior para o TPD. O IANPT dos pacientes em TD foi maior que os em TP (p=0,0959. Foram identificados cinco subgrupos morfologicamente semelhantes, denominados: B1, B2, B3, B4 e B5. A mortalidade total foi de 17,5%. CONCLUSÃO: A morfologia do suprimento sangüíneo vascular pulmonar das artérias pulmonares centrais e artérias colaterais sistêmico-pulmonares mostrou-se soberana na orientação do tratamento cirúrgico. Independentemente da divisão didática em subgrupos, o TP foi predominante. A mortalidade não apresentou correlação com as características morfométricas.OBJECTIVE: To study the morphometric characteristics of the central pulmonary arteries and aortopulmonary collateral arteries by assessing the morphology

  2. Margem de segurança do meloxicam em cães: efeitos deletérios nas células sangüíneas e trato gastrintestinal Margin of safety of meloxicam in dogs: deleterious effects on blood cells and gastrointestinal tract

    Directory of Open Access Journals (Sweden)

    Marilac Maria Arnaldo Alencar

    2003-06-01

    Full Text Available Este trabalho investigou a margem de segurança do inibidor COX-2, meloxicam, em cães, enfocando seus efeitos deletérios nas células sangüíneas e no trato gastrintestinal. Para tanto, após uma avaliação clínico-laboratorial, os cães foram distribuídos nos seguintes grupos: I (placebo; n= 3, II (piroxicam; 1,0mg kg-1; n= 5, III (meloxicam; 0,2mg kg-1; n= 5, IV (meloxicam;1,0mg kg-1; n= 5 e V (meloxicam; 2,0mg kg-1; n= 5. Os fármacos foram usados, por via oral, por 16 dias. No 17º dia, repetiu-se o hemograma completo e, então, procedeu-se a eutanásia seguida pela necrópsia. No grupo I, não houve alterações dignas de nota. No grupo II, todos os cães apresentaram episódios moderados de vômito e diarréia. O perfil celular sangüíneo não foi significativamente modificado. Em dois cães, houve redução no hematócrito e na hemoglobina. Na necropsia, observaram-se focos hemorrágicos e lesões gastriduodenais moderadas. A análise microscópica revelou a presença de gastrite e enterite ulcerativa. No grupo III, quatro cães (80% apresentaram vômito e diarréia, sem alteração no perfil celular sangüíneo. Na análise macroscópica, observaram-se lesões brandas na mucosa gástrica e focos hemorrágicos no duodeno em quatro cães. Na histopatologia, observaram-se lesões sugestivas de discreta gastroenterite. No grupo IV, os cinco cães tiveram vômito e diarréia sanguinolenta. Quatro deles (80% apresentaram anemia (p This study investigated the margin of safety of the COX-2e inhibitor, meloxicam on blood cells and gastrointestinal tract of dogs. After a clinical and laboratorial examination, the dogs were distributed in the following groups: I (placebo; n=3, II (piroxicam: 1.0mg kg-1; n=5, III (meloxicam: 0.2mg kg-1; n=5, IV (meloxican: 1.0mg kg-1; n=5 and V (meloxican: 2.0mg kg-1; n=5. The drugs were given orally for 16 days. On the 17th day the complete hemogram was repeated and the euthanasia and necropsy were then

  3. Fuel element transport container

    International Nuclear Information System (INIS)

    Benna, P.; Neuenfeldt, W.

    1979-01-01

    The reprocessing system includes a large number of waterfilled ponds next to each other for the intermediate storage of fuel elements from LWR's. The fuel element transport device is allocated to a middle pond. The individual ponds are separated from each other by walls, and are only accessible from the middle pond via narrow passages. The transport device includes a telescopic running rail for a trolley with a grab device for the fuel element. The running rail is supported in turn by a second trolley, which can be moved by wheels on rails. Part of the drive of the first trolley is arranged on the second one. Using this transport device, adjacent ponds can be served through the passage openings. (DG) [de

  4. Nuclear fuel element

    International Nuclear Information System (INIS)

    Hirayama, Satoshi; Kawada, Toshiyuki; Matsuzaki, Masayoshi.

    1980-01-01

    Purpose: To provide a fuel element for reducing the mechanical interactions between a fuel-cladding tube and the fuel element and for alleviating the limits of the operating conditions of a reactor. Constitution: A fuel element having mainly uranium dioxide consists of a cylindrical outer pellet and cylindrical inner pellet inserted into the outer pellet. The outer pellet contains two or more additives selected from aluminium oxide, beryllium oxide, magnesium oxide, silicon oxide, sodium oxide, phosphorus oxide, calcium oxide and iron oxide, and the inner pellet contains nuclear fuel substance solely or one additive selected from calcium oxide, silicon oxide, aluminium oxide, magnesium oxide, zirconium oxide and iron oxide. The outer pellet of the fuel thus constituted is reduced in mechanical strength and also in the mechanical interactions with the cladding tube, and the plastic fluidity of the entire pellet is prevented by the inner pellet increased in the mechanical strength. (Kamimura, M.)

  5. Creativity Management Key Elements

    Directory of Open Access Journals (Sweden)

    Rosa María Fuchs Ángeles

    2015-09-01

    Full Text Available Organizations are constantly looking towards innovation. In order to reach it they must foment creativity. This paper analyzes a series of elements considered in the organizational creativity management and proposes a model with the indispensable factors that organizations should consider to reach it. These elements are: culture and organizational environment, strategy, structure, communication, relation with customers, human resources (recruiting, training, job design, compensation, promotion, and performance evaluation, long term orientation and the organizational life cycle. Having the analysis of those elements as a basis, the indispensable pillars on management creativity are identified. The proposed model is based on 5 pillars: the alignment between strategic, culture and organizational structure, called by the authors 'Holy Trinity'; intern publicity; customer’s voice; recognition and a look towards future. Finally, the case of an innovative Peruvian enterprise is presented from the model’s perspective and the study conclusions.

  6. Fuel Element Technical Manual

    Energy Technology Data Exchange (ETDEWEB)

    Burley, H.H. [ed.

    1956-08-01

    It is the purpose of the Fuel Element Technical Manual to Provide a single document describing the fabrication processes used in the manufacture of the fuel element as well as the technical bases for these processes. The manual will be instrumental in the indoctrination of personnel new to the field and will provide a single data reference for all personnel involved in the design or manufacture of the fuel element. The material contained in this manual was assembled by members of the Engineering Department and the Manufacturing Department at the Hanford Atomic Products Operation between the dates October, 1955 and June, 1956. Arrangement of the manual. The manual is divided into six parts: Part I--introduction; Part II--technical bases; Part III--process; Part IV--plant and equipment; Part V--process control and improvement; and VI--safety.

  7. Elements of social security

    DEFF Research Database (Denmark)

    Hansen, Hans

    Elements of Social Security is a comparative study of important elements of the social security systems in Denmark (DK), Sweden (S), Finland (FIN), Austria (A), Germany (D), the Netherlands (NL), Great Britain (GB) and Canada (CAN). It should be emphasized that Germany is the former West Germany...... (Alte Länder). This is the 9th and last edition of the publication,covering income levels and rules for social security and personal taxation for 1999. Basis for the projections to 1999 income levels is the 1998 data (in some cases 1999 data)for OECD's Taxing Wages as reported by national experts....

  8. Elements of linear space

    CERN Document Server

    Amir-Moez, A R; Sneddon, I N

    1962-01-01

    Elements of Linear Space is a detailed treatment of the elements of linear spaces, including real spaces with no more than three dimensions and complex n-dimensional spaces. The geometry of conic sections and quadric surfaces is considered, along with algebraic structures, especially vector spaces and transformations. Problems drawn from various branches of geometry are given.Comprised of 12 chapters, this volume begins with an introduction to real Euclidean space, followed by a discussion on linear transformations and matrices. The addition and multiplication of transformations and matrices a

  9. Bibliography on transuranium elements

    International Nuclear Information System (INIS)

    Sood, D.D.

    1991-01-01

    A selective bibliography of prominent publications on transuranium elements is compiled. Heading papers, symposia proceedings and the textbooks are included in the bibliography. The bibliography is arranged under the headings: (1)Books, Symposia Proceedings, Reviews etc., (2)Discovery, (3)Weighable Isolation, (4)Metal Preparation, (5)Nuclear Properties, (6)Plutonium as Reactor Fuel, (7)Fuel Reprocessing, (8)Solid State Chemistry, Thermochemistry and Spectroscopy, (9)Radiation Safety, (10)Applications, and (11)Some Typical Indian Papers. Total number of references cited are 298. The bibliography, though selective, will serve as a starting point for comprehensive literature search on transuranium elements. (author)

  10. Finite elements and approximation

    CERN Document Server

    Zienkiewicz, O C

    2006-01-01

    A powerful tool for the approximate solution of differential equations, the finite element is extensively used in industry and research. This book offers students of engineering and physics a comprehensive view of the principles involved, with numerous illustrative examples and exercises.Starting with continuum boundary value problems and the need for numerical discretization, the text examines finite difference methods, weighted residual methods in the context of continuous trial functions, and piecewise defined trial functions and the finite element method. Additional topics include higher o

  11. Elements of Social Security

    DEFF Research Database (Denmark)

    Hansen, Hans

    Elements of Social Security contains an overview of important benefit schemes in Denmark, Sweden, Finland, Austria, Germany, the Netherlands, Great Britain and Canada. The schemes are categorized according to common sets of criteria and compared. Stylized cases illustrate the impact on disposable...

  12. Elements of Social Security

    DEFF Research Database (Denmark)

    Hansen, Hans

    Elements of Social Security contains an overview of important benefit schemes in Denmark, Sweden, Finland, Germany, the Netherlands, Great Britain and Canada. The schemes are categorized according to common sets of criteria and compared. Stylized cases illustrate the impact on disposable income...

  13. Elements of Social Security

    DEFF Research Database (Denmark)

    Hansen, Hans

    Elements of Social Security contains an overview of important benefit schemes in Denmark, Sweden, Finland, Germany, Great Britain, the Netherlands and Canada. The schemes are categorized according to common sets of criteria and compared. Stylized cases illustrate the impact on disposable income...

  14. Water, the intangible element

    NARCIS (Netherlands)

    Schotting, R.J.

    2009-01-01

    Water is the key to life. No living creature can survive without water. Too much water or polluted water are serious threats to mankind. Managing this intangible element is complex, not only in wet deltaic regions but also in the (semi-)arid regions of the world. Combined efforts of the

  15. Movies and Literary Elements.

    Science.gov (United States)

    Keller, Rodney D.

    1987-01-01

    Recommends using movie clips to stimulate students' interest in reading a novel as well as to teach elements of fiction such as plot, character, setting, symbol, irony, and theme. Describes each clip and provides study questions. Includes a listing of movies made from books. (NH)

  16. Elements of Architecture

    DEFF Research Database (Denmark)

    Elements of Architecture explores new ways of engaging architecture in archaeology. It conceives of architecture both as the physical evidence of past societies and as existing beyond the physical environment, considering how people in the past have not just dwelled in buildings but have existed...

  17. Inside finite elements

    CERN Document Server

    Weiser, Martin

    2016-01-01

    All relevant implementation aspects of finite element methods are discussed in this book. The focus is on algorithms and data structures as well as on their concrete implementation. Theory is covered as far as it gives insight into the construction of algorithms. Throughout the exercises a complete FE-solver for scalar 2D problems will be implemented in Matlab/Octave.

  18. Plants' essential chemical elements

    Science.gov (United States)

    Kevin T. Smith

    2007-01-01

    Every garden center and hardware store sells fertilizer guaranteed to "feed" plants. In a strict sense, we can't feed plants. Food contains an energy source. Green plants capture solar energy and make their own food through photosynthesis! Photosynthesis and other metabolic processes require chemical elements in appropriate doses for plants to survive...

  19. Elements of relativity theory

    International Nuclear Information System (INIS)

    Lawden, D.F.

    1985-01-01

    The book on elements of relativity theory is intended for final year school students or as an early university course in mathematical physics. Special principle of relativity, lorentz transformation, velocity transformations, relativistic mechanics, and general theory of relativity, are all discussed. (U.K.)

  20. Photovoltaic radiation detector element

    International Nuclear Information System (INIS)

    Agouridis, D.C.

    1980-01-01

    A radiation detector element is formed of a body of semiconductor material, a coating on the body which forms a photovoltaic junction therewith, and a current collector consisting of narrow metallic strips, the aforesaid coating having an opening therein in the edge of which closely approaches but is spaced from the current collector strips

  1. Element-topology-independent preconditioners for parallel finite element computations

    Science.gov (United States)

    Park, K. C.; Alexander, Scott

    1992-01-01

    A family of preconditioners for the solution of finite element equations are presented, which are element-topology independent and thus can be applicable to element order-free parallel computations. A key feature of the present preconditioners is the repeated use of element connectivity matrices and their left and right inverses. The properties and performance of the present preconditioners are demonstrated via beam and two-dimensional finite element matrices for implicit time integration computations.

  2. Archaeal extrachromosomal genetic elements

    DEFF Research Database (Denmark)

    Wang, Haina; Peng, Nan; Shah, Shiraz Ali

    2015-01-01

    SUMMARY: Research on archaeal extrachromosomal genetic elements (ECEs) has progressed rapidly in the past decade. To date, over 60 archaeal viruses and 60 plasmids have been isolated. These archaeal viruses exhibit an exceptional diversity in morphology, with a wide array of shapes, such as spind......SUMMARY: Research on archaeal extrachromosomal genetic elements (ECEs) has progressed rapidly in the past decade. To date, over 60 archaeal viruses and 60 plasmids have been isolated. These archaeal viruses exhibit an exceptional diversity in morphology, with a wide array of shapes...... on archaeal ECEs has just started to unravel the molecular biology of these genetic entities and their interactions with archaeal hosts, it is expected to accelerate in the next decade....

  3. Nuclear fuel element

    Energy Technology Data Exchange (ETDEWEB)

    Armijo, J S; Coffing, L F

    1979-04-05

    The fuel element with circular cross-section for BWR and PWR consists of a core surrounded by a compound jacket container where there is a gap between the core and jacket during operation in the reactor. The core consists of U, Pu, Th compounds and mixtures of these. The compound jacket consists of zircaloy 2 or 4. In order to for example prevent the corrosion of the compound jacket, its inner surface has a metal barrier with smaller neutron absorbers than the jacket material in the form of a zirconium sponge. The zirconium of this metal barrier has impurities of various elements in the order of magnitude of 1000 to 5000 ppm. The oxygen content is in the range of 200 to 1200 ppm and the thickness of the metal barrier is 1-30% of the thickness of the jacket.

  4. Nuclear reactor fuel element

    International Nuclear Information System (INIS)

    D'Eye, R.W.M.; Shennan, J.V.; Ford, L.H.

    1977-01-01

    Fuel element with particles from ceramic fissionable material (e.g. uranium carbide), each one being coated with pyrolitically deposited carbon and all of them being connected at their points of contact by means of an individual crossbar. The crossbar consists of silicon carbide produced by reaction of silicon metal powder with the carbon under the influence of heat. Previously the silicon metal powder together with the particles was kneaded in a solvent and a binder (e.g. epoxy resin in methyl ethyl ketone plus setting agent) to from a pulp. The reaction temperature lies at 1750 0 C. The reaction itself may take place in a nitrogen atmosphere. There will be produced a fuel element with a high overall thermal conductivity. (DG) [de

  5. Nuclear fuel element

    International Nuclear Information System (INIS)

    1974-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed. A heat conducting fission product retaining metal liner of a refractory metal is incorporated in the fuel element between the cladding and the nuclear fuel to inhibit mechanical interaction between the nuclear fuel and the cladding, to isolate fission products and nuclear fuel impurities from contacting the cladding, and to improve the axial thermal peaking gradient along the length of the fuel rod. The metal liner can be in the form of a tube or hollow cylindrical column, a foil of single or multiple layers in the shape of a hollow cylindrical column, or a coating on the internal surface of the cladding. Preferred refractory metal materials are molybdenum, tungsten, rhenium, niobium and alloys of the foregoing metals

  6. Nuclear fuel element

    International Nuclear Information System (INIS)

    Thompson, J.R.; Rowland, T.C.

    1976-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed. A heat conducting, fission product retaining metal liner of a refractory metal is incorporated in the fuel element between the cladding and the nuclear fuel to inhibit mechanical interaction between the nuclear fuel and the cladding, to isolate fission products and nuclear fuel impurities from contacting the cladding and to improve the axial thermal peaking gradient along the length of the fuel rod. The metal liner can be in the form of a tube or hollow cylindrical column, a foil of single or multiple layers in the shape of a hollow cylindrical column, or a coating on the internal surface of the cladding. Preferred refractory metal materials are molybdenum, tungsten, rhenium, niobium and alloys of the foregoing metals

  7. Elements of quantum optics

    CERN Document Server

    Meystre, Pierre

    2007-01-01

    Elements of Quantum Optics gives a self-contained and broad coverage of the basic elements necessary to understand and carry out research in laser physics and quantum optics, including a review of basic quantum mechanics and pedagogical introductions to system-reservoir interactions and to second quantization. The text reveals the close connection between many seemingly unrelated topics, such as probe absorption, four-wave mixing, optical instabilities, resonance fluorescence and squeezing. It also comprises discussions of cavity quantum electrodynamics and atom optics. The 4th edition includes a new chapter on quantum entanglement and quantum information, as well as added discussions of the quantum beam splitter, electromagnetically induced transparency, slow light, and the input-output formalism needed to understand many problems in quantum optics. It also provides an expanded treatment of the minimum-coupling Hamiltonian and a simple derivation of the Gross-Pitaevskii equation, an important gateway to rese...

  8. Periodic table of elements

    International Nuclear Information System (INIS)

    Fluck, E.; Heumann, K.G.

    1985-01-01

    Following a recommendation by the International Union for Pure and Applied Chemistry (IUPAC), the groups of the periodic table shall be numbered from 1 to 18, instead of I to VIII as before. The recommendations has been approved of by the Committee on Nomenclature of the American Chemical Society. The new system abandons the distinction between main groups (a) and auxiliary groups (b), which in the past frequently has been the reason for misunderstandings between European and American chemists, due to different handling. The publishing house VCH Verlagsgesellschaft recently produced a new periodic table that shows the old and the new numbering system together at a glance, so that chemists will have time to get familiar with the new system. In addition the new periodic table represents an extensive data compilation arranged by elements. The front page lists the chemical properties of elements, the back page their physical properties. (orig./EF) [de

  9. Nuclear fuel elements

    International Nuclear Information System (INIS)

    Kawada, Toshiyuki; Hirayama, Satoshi; Yoneya, Katsutoshi.

    1980-01-01

    Purpose: To enable load-depending operation as well as moderation for the restriction of operation conditions in the present nuclear reactors, by specifying the essential ingredients and the total weight of the additives to UO 2 fuel substances. Constitution: Two or more additives selected from Al 2 O 3 , B 2 O, CaO, MgO, SiO 2 , Na 2 O and P 2 O 5 are added by the total weight of 2 - 5% to fuel substances consisting of UO 2 or a mixture of UO 2 and PuO 2 . When the mixture is sintered, the strength of the fuel elements is decreased and the fuel-cladding interactions due to the difference in the heat expansion coefficients between the ceramic fuel elements and the metal claddings are decreased to a substantially harmless degree. (Horiuchi, T.)

  10. Nuclear fuel elements

    International Nuclear Information System (INIS)

    Nakai, Keiichi

    1983-01-01

    Purpose: To decrease the tensile stresses resulted in a fuel can as well as prevent decladding of fuel pellets into the bore holes by decreasing the inner pressure within the nuclear fuel element. Constitution: A fuel can is filled with hollow fuel pellets, inserted with a spring for retaining the hollow fuel pellets with an appropriate force and, thereafter, closely sealed at the both ends with end plugs. A cylindrical body is disposed into the bore holes of the hollow fuel pellets. Since initial sealing gases and/or gaseous nuclear fission products can thus be excluded from the bore holes where the temperature is at the highest level, the inner pressure of the nuclear fuel element can be reduced to decrease the tensile strength resulted to the fuel can. Furthermore, decladding of fuel pellets into the bore holes can be prevented. (Moriyama, K.)

  11. Nuclear fuel elements

    International Nuclear Information System (INIS)

    Ainsworth, K.F.

    1979-01-01

    A nuclear fuel element is described having a cluster of nuclear fuel pins supported in parallel, spaced apart relationship by transverse cellular braces within coaxial, inner and outer sleeves, the inner sleeve being in at least two separate axial lengths, each of the transverse braces having a peripheral portion which is clamped peripherally between the ends of the axial lengths of the inner sleeve. (author)

  12. Sensor for ionizable elements

    International Nuclear Information System (INIS)

    Berkey, E.; Reed, W.A. III; Hickam, W.M.

    1977-01-01

    Sensor to detect thermally ionizable elements or molucules in air, water vapour or oxygen or to be used as alkali leak detector in vacuum systems, e.g. in the pipe system of a liquid-metal cooled FBR. The sensor consists of an filament made of thorium-containing iridium as cathode with a temperature upto 1000 0 C and an anode sheet of molybdenum, nickel or stainless steal. (ORU) [de

  13. Nuclear reactor fuel elements

    International Nuclear Information System (INIS)

    Butterfield, C.E.; Waite, E.

    1982-01-01

    A nuclear reactor fuel element comprising a column of vibration compacted fuel which is retained in consolidated condition by a thimble shaped plug. The plug is wedged into gripping engagement with the wall of the sheath by a wedge. The wedge material has a lower coefficient of expansion than the sheath material so that at reactor operating temperature the retainer can relax sufficient to accommodate thermal expansion of the column of fuel. (author)

  14. OXIDATION OF TRANSURANIC ELEMENTS

    Science.gov (United States)

    Moore, R.L.

    1959-02-17

    A method is reported for oxidizing neptunium or plutonium in the presence of cerous values without also oxidizing the cerous values. The method consists in treating an aqueous 1N nitric acid solution, containing such cerous values together with the trivalent transuranic elements, with a quantity of hydrogen peroxide stoichiometrically sufficient to oxidize the transuranic values to the hexavalent state, and digesting the solution at room temperature.

  15. Transportation of radioactive elements

    International Nuclear Information System (INIS)

    Thubert, Francis; Rentien, Guy; Jacquet, Michel

    1981-01-01

    The production and marketing of artificial radioactive elements engaged in by the 'Office des Rayonnements Ionisants' requires the use of specially designed packagings and assorted means of transport. The authors begin by describing the different kinds of products involved and the forms of packagings needed, and go on to discuss the various means of transport used, underlining the fact that, in terms of number and gravity, the incidents that have occurred to date have indeed been few and far between [fr

  16. Vented nuclear fuel element

    International Nuclear Information System (INIS)

    Oguma, M.; Hirose, Y.

    1976-01-01

    A description is given of a vented nuclear fuel element having a plenum for accumulation of fission product gases and plug means for delaying the release of the fission product gases from the plenum, the plug means comprising a first porous body wettable with a liquid metal and a second porous body non-wettable with the liquid metal, the first porous body being impregnated with the liquid metal and in contact with the liquid metal

  17. Helium the disappearing element

    CERN Document Server

    Sears, Wheeler M

    2015-01-01

    The subject of the book is helium, the element, and its use in myriad applications including MRI machines, particle accelerators, space telescopes, and of course balloons and blimps. It was at the birth of our Universe, or the Big Bang, where the majority of cosmic helium was created; and stellar helium production continues. Although helium is the second most abundant element in the Universe, it is actually quite rare here on Earth and only exists because of radioactive elements deep within the Earth. This book includes a detailed history of the discovery of helium, of the commercial industry built around it, how the helium we actually encounter is produced within the Earth, and the state of the helium industry today. The gas that most people associate with birthday party balloons is running out. “Who cares?” you might ask. Well, without helium, MRI machines could not function, rockets could not go into space, particle accelerators such as those used by CERN could not operate, fiber optic cables would not...

  18. Elements of quantum information

    International Nuclear Information System (INIS)

    Schleich, W.P.

    2007-01-01

    Elements of Quantum Information introduces the reader to the fascinating field of quantum information processing, which lives on the interface between computer science, physics, mathematics, and engineering. This interdisciplinary branch of science thrives on the use of quantum mechanics as a resource for high potential modern applications. With its wide coverage of experiments, applications, and specialized topics - all written by renowned experts - Elements of Quantum Information provides and indispensable, up-to-date account of the state of the art of this rapidly advancing field and takes the reader straight up to the frontiers of current research. The articles have first appeared as a special issue of the journal 'Fortschritte der Physik / Progress of Physics'. Since then, they have been carefully updated. The book will be an inspiring source of information and insight for anyone researching and specializing in experiments and theory of quantum information. Topics addressed in Elements of Quantum Information include - Cavity Quantum Electrodynamics - Segmented Paul Traps - Cold Atoms and Bose-Einstein Condensates in Microtraps, Optical Lattices, and on Atom Chips - Rydberg Gases - Factorization of Numbers with Physical Systems - Entanglement of Continuous Variables - NMR and Solid State Quantum Computation - Quantum Algorithms and Quantum Machines - Complexity Theory - Quantum Crytography. (orig.)

  19. Using Finite Element Method

    Directory of Open Access Journals (Sweden)

    M.H.R. Ghoreishy

    2008-02-01

    Full Text Available This research work is devoted to the footprint analysis of a steel-belted radial tyre (185/65R14 under vertical static load using finite element method. Two models have been developed in which in the first model the tread patterns were replaced by simple ribs while the second model was consisted of details of the tread blocks. Linear elastic and hyper elastic (Arruda-Boyce material models were selected to describe the mechanical behavior of the reinforcing and rubbery parts, respectively. The above two finite element models of the tyre were analyzed under inflation pressure and vertical static loads. The second model (with detailed tread patterns was analyzed with and without friction effect between tread and contact surfaces. In every stage of the analysis, the results were compared with the experimental data to confirm the accuracy and applicability of the model. Results showed that neglecting the tread pattern design not only reduces the computational cost and effort but also the differences between computed deformations do not show significant changes. However, more complicated variables such as shape and area of the footprint zone and contact pressure are affected considerably by the finite element model selected for the tread blocks. In addition, inclusion of friction even in static state changes these variables significantly.

  20. Study of Superheavy Elements

    International Nuclear Information System (INIS)

    Hofmann, Sigurd

    2007-01-01

    The nuclear shell model predicts that the next doubly magic shell-closure beyond 208 Pb is at a proton number Z = 114, 120, or 126 and at a neutron number N = 172 or 184. The outstanding aim of experimental investigations is the exploration of this region of spherical 'SuperHeavy Elements' (SHEs). Experimental methods are described, which allowed for the identification of elements produced on a cross-section level of about 1 pb. The decay data reveal that for the heaviest elements, the dominant decay mode is alpha emission, not fission. Decay properties as well as reaction cross-sections are compared with results of theoretical investigations. Finally, plans are presented for the further development of the experimental set-up and the application of new techniques, as for instance the precise mass measurement of the produced nuclei using ion traps. At increased sensitivity, the detailed exploration of the region of spherical SHEs will start, after first steps on the island were made in recent years. (Author)

  1. Probabilistic finite elements

    Science.gov (United States)

    Belytschko, Ted; Wing, Kam Liu

    1987-01-01

    In the Probabilistic Finite Element Method (PFEM), finite element methods have been efficiently combined with second-order perturbation techniques to provide an effective method for informing the designer of the range of response which is likely in a given problem. The designer must provide as input the statistical character of the input variables, such as yield strength, load magnitude, and Young's modulus, by specifying their mean values and their variances. The output then consists of the mean response and the variance in the response. Thus the designer is given a much broader picture of the predicted performance than with simply a single response curve. These methods are applicable to a wide class of problems, provided that the scale of randomness is not too large and the probabilistic density functions possess decaying tails. By incorporating the computational techniques we have developed in the past 3 years for efficiency, the probabilistic finite element methods are capable of handling large systems with many sources of uncertainties. Sample results for an elastic-plastic ten-bar structure and an elastic-plastic plane continuum with a circular hole subject to cyclic loadings with the yield stress on the random field are given.

  2. New functionalities in abundant element oxides: ubiquitous element strategy

    International Nuclear Information System (INIS)

    Hosono, Hideo; Hayashi, Katsuro; Kamiya, Toshio; Atou, Toshiyuki; Susaki, Tomofumi

    2011-01-01

    While most ceramics are composed of ubiquitous elements (the ten most abundant elements within the Earth's crust), many advanced materials are based on rare elements. A 'rare-element crisis' is approaching owing to the imbalance between the limited supply of rare elements and the increasing demand. Therefore, we propose a 'ubiquitous element strategy' for materials research, which aims to apply abundant elements in a variety of innovative applications. Creation of innovative oxide materials and devices based on conventional ceramics is one specific challenge. This review describes the concept of ubiquitous element strategy and gives some highlights of our recent research on the synthesis of electronic, thermionic and structural materials using ubiquitous elements. (topical review)

  3. The transuranium elements: From neptunium and plutonium to element 112

    International Nuclear Information System (INIS)

    Hoffman, D.C.

    1996-01-01

    Beginning in the 1930's, both chemists and physicists became interested in synthesizing new artificial elements. The first transuranium element, Np, was synthesized in 1940. Over the past six decades, 20 transuranium elements have been produced. A review of the synthesis is given. The procedure of naming the heavy elements is also discussed. It appears feasible to produce elements 113 and 114. With the Berkeley Gas-filled Separator, it should be possible to reach the superheavy elements in the region of the spherical Z=114 shell, but with fewer neutrons than the N=184 spherical shell. 57 refs, 6 figs

  4. Parâmetros sangüíneos e urinários, no pré e pós parto, de búfalas criadas em sistema exclusivo de pastejo The blood and urinary values in the pre and pos-parturient period of buffaloes, kept on exclusive pasture feeding

    Directory of Open Access Journals (Sweden)

    Carlos Magno Chaves de Oliveira

    2003-06-01

    Full Text Available Foi avaliada a ocorrência de alterações nas concentrações de glicose sanguínea, proteína plasmática total, hematócrito e presença de corpos cetônicos na urina de oito búfalas leiteiras da raça Murrah, com idade variando entre 5 e 10 anos, com no mínimo duas lactações, clinicamente sadias, desde 60 dias antes até 60 dias pós-parto. As concentrações médias de glicose sangüínea e o valor médio do hematócrito diminuíram significativamente no pós-parto (pEight lactating buffaloes of the Murrah breed were used from 60 days before up to 60 days after calving, in order to evaluate alterations in the concentration of blood glucose, total plasmatic protein, haematocrit and the presence of ketonic bodies in the urine. The 5 to 10- year old buffaloes were clinically healthy and had had at least two lactations. During the experimental period the animals were maintained on Brachiaria brizantha pasture and supplemented with a mineral mixture and water.The media concentrations of blood glucose and the media values of the haematocrit diminished significantly after calving (p<0,05. The concentrations of total plasmatic protein did not show significant variation during the pre and post-calving period. The ketonic bodies in the pre-calving period were only detected in the urine of one buffaloe, but after the 32nd day of lactation ketonic bodies were detected in all animals. There was a direct relationship between the color of the urine positive by the Rothera test and blood glucose concentrations. It can be concluded that at the beginning of lactation the buffaloes had an energetic deficit, characterized by a decline of blood glucose concentrations and the presence of ketonic bodies in the urine, and that lactation caused a progressive decline of the hematocrit, but that the concentration of total plasmatic protein did not vary during the pre and post-calving period.

  5. Desempenho e parâmetros sangüíneos de eqüinos em crescimento submetidos a dietas com diferentes níveis de farelo de canola Performance and blood parameters of growing equine fed diets with different levels of canola meal

    Directory of Open Access Journals (Sweden)

    Kátia de Oliveira

    2001-02-01

    Full Text Available Utilizando potros, avaliaram-se dietas em que a proteína do farelo de soja foi substituído em diferentes níveis (0; 35; 65 e 100% pela do farelo de canola. As rações foram isoprotéicas ( 17% PB e isocalóricas (4200 kcal/kg. Foram utilizados 16 eqüinos da raça Mangalarga, sendo oito machos e oito fêmeas, com média de dez meses e 218 kg PV inicial, consumindo um total de 2,5% PV, na matéria seca (MS. A dieta era composta por 40% de volumoso e 60% de concentrado. O delineamento experimental utilizado foi em blocos ao acaso, considerando quatro blocos e quatro tratamentos. Não se verificou efeito dos tratamentos sobre as variáveis de desempenho (ganho diário de peso vivo, altura na cernelha, perímetro torácico e perímetro da canela e parâmetros sangüíneos (glicose e uréia dos potros em crescimento. Nos concentrados para potros dos 9 a 11,5 meses de idade, o farelo de soja pode ser substituído pelo farelo de canola.Diets composed by four different levels (0; 53; 65 and 100% of canola meal replacing soybean meal crude protein (CP were evaluated using foals. The diets were isoproteic (17% CP and isocaloric (4200 kcal/kg. Sixteen Managalarga breed foals, eight males and eight females, averaging 10 months and 218 kg LW, fed a total intake of 2.5% LW on dry matter (DM basis were used. The diet was composed by 60:40 forage to concentrate ratio. A completely block experimental design, with four blocks and four treatments, was used. There were no effect of treatments on the performance variables (average daily gain, wither height, heart girth and cannon bone circumference and blood parameters (glucose and urea of growing foals. In the concentrate for growing foals from 9 to 11.5 months old, the soybean meal can be replaced by canola meal.

  6. Transfusão sangüínea no intra-operatório, complicações e prognóstico Transfusión sanguínea en el intraoperatorio, complicaciones y pronóstico Complications and prognosis of intraoperative blood transfusion

    Directory of Open Access Journals (Sweden)

    João Manoel Silva Junior

    2008-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Transfusões sangüíneas no intra-operatório estão associadas a aumento de complicações no pós-operatório e custos hospitalares. Portanto, este estudo avaliou as características, complicações e possíveis fatores de riscos para morte em pacientes cirúrgicos que necessitaram de transfusões sangüíneas no intra-operatório. MÉTODO: Coorte prospectiva, durante período de um ano, no centro cirúrgico de hospital terciário. Incluíram-se pacientes com idade acima de 18 anos que necessitaram de transfusões sangüíneas no intra-operatório. Testemunhas de Jeová, pacientes que receberam transfusões prévias, falência coronariana e lesão encefálica aguda foram excluídos. RESULTADOS: O estudo envolveu 80 pacientes, com idade média de 68,4 ± 14,1 anos. Os pacientes ASA II foram prevalentes com 69,6% dos casos, os escores APACHE II e POSSUM foram em média, respectivamente, 13,6 ± 4,4 e 37,5 ± 11,4. A hemoglobina média no momento da transfusão era 8,2 ± 1,8 g.dL-1 e 19% dos pacientes apresentavam hemoglobina maior que 10 g.dL-1. Os pacientes receberam em média 2,2 ± 0,9 UI de concentrados de hemácias. A mortalidade hospitalar foi 26,3%. As complicações pós-transfusões totalizaram 57,5% dos casos no pós-operatório e a mais freqüente foi infecção. Foram fatores independentes de morte na regressão logística os escores APACHE II (OR = 1,34; IC 95% 1,102 - 1,622, POSSUM (OR = 1,08; IC 95% 1,008 - 1,150 e número de unidades de concentrados de hemácias recebidas (OR = 2,22; IC 95% 1,100 - 4,463. Quanto maior o número de transfusões sangüíneas, maiores as incidências de complicações e mortalidade. CONCLUSÕES: O valor de hemoglobina e o número de unidades de concentrados de hemácias utilizados foram elevados comparados com os estudos que preconizam estratégias restritivas. Foi encontrada nesta amostra alta incidência de complicações, principalmente infecções, e elevada

  7. Elements of social action

    Directory of Open Access Journals (Sweden)

    Marjanović Miloš

    2011-01-01

    Full Text Available Because of the significant analytical advantages, the author prefers social action as initial sociological concept in the relation to social phenomenon. Its basic elements are: actors, subjects and tools, needs and interests, values and norms, positions and roles. Actors set in motion and unify the rest of elements, guide to the magic triangle of sociology (movement, change, order, reaffirm actor paradigm to systemic paradigm. Subjects and tools materialize an action and its overestimate results in technological determinism or (by means of property as institutional appropriation of nature in the (unclassed historical type of society. Needs and interests are the basis of person's motivation and starting point for depth analysis of sociability. The expansion of legitimate interests circle develops techniques of normative regulation. Values and norms guide to institutional-organizational, positions to vertical and roles to horizontal structure. Values give the meaning to the action as well as to human existence, they are orientations of motivate system of personality but also basic aspect of society. As abstractions, values are latent background of norms and they tell to us what to do, and norms how to do something. Norms are specified instructions for suitable behavior Without normative order, not to be possible the satisfying of needs and the conciliation of interests. Riches, power and prestige are components of social position, and legal status is the determination of rights and obligations of the position. Roles are normative expectation of behavior. Toward kinds of sanctions roles are classified. Roles but also other elements of social action are starting point for sociological analysis of legal norms and institutes. On the other side, the observation of legal component of social actions enriches, strengths and precises sociological analysis of them.

  8. Analytical elements of mechanics

    CERN Document Server

    Kane, Thomas R

    2013-01-01

    Analytical Elements of Mechanics, Volume 1, is the first of two volumes intended for use in courses in classical mechanics. The books aim to provide students and teachers with a text consistent in content and format with the author's ideas regarding the subject matter and teaching of mechanics, and to disseminate these ideas. The book opens with a detailed exposition of vector algebra, and no prior knowledge of this subject is required. This is followed by a chapter on the topic of mass centers, which is presented as a logical extension of concepts introduced in connection with centroids. A

  9. Improved nuclear fuel element

    International Nuclear Information System (INIS)

    Klepfer, H.H.

    1974-01-01

    A nuclear fuel element is described which comprises: 1) an elongated clad container, 2) a layer of high lubricity material being disposed in and adjacent to the clad container, 3) a low neutron capture cross section metal liner being disposed in the clad container and adjacent to the layer, 4) a central core of a body of nuclear fuel material disposed in and partially filling the container and forming an internal cavity in the container, 5) an enclosure integrally secured and sealed at each end of the container, and a nuclear fuel material retaining means positioned in the cavity. (author)

  10. Elements of real analysis

    CERN Document Server

    Sprecher, David A

    2010-01-01

    This classic text in introductory analysis delineates and explores the intermediate steps between the basics of calculus and the ultimate stage of mathematics: abstraction and generalization.Since many abstractions and generalizations originate with the real line, the author has made it the unifying theme of the text, constructing the real number system from the point of view of a Cauchy sequence (a step which Dr. Sprecher feels is essential to learn what the real number system is).The material covered in Elements of Real Analysis should be accessible to those who have completed a course in

  11. Nuclear reactor fuel elements

    International Nuclear Information System (INIS)

    Hindle, E. D.

    1984-01-01

    An array of rods is assembled to form a fuel element for a pressurized water reactor, the rods comprising zirconium alloy sheathed nuclear fuel pellets and containing helium. The helium gas pressure is selected for each rod so that it differs substantially from the helium gas pressure in its closest neighbors. In a preferred arrangement the rods are arranged in a square lattice and the helium gas pressure alternates between a relatively high value and a relatively low value so that each rod has as its closest neighbors up to four rods containing helium gas at the other pressure value

  12. Nuclear reactor fuel elements

    Energy Technology Data Exchange (ETDEWEB)

    Hindle, E. D.

    1984-10-16

    An array of rods is assembled to form a fuel element for a pressurized water reactor, the rods comprising zirconium alloy sheathed nuclear fuel pellets and containing helium. The helium gas pressure is selected for each rod so that it differs substantially from the helium gas pressure in its closest neighbors. In a preferred arrangement the rods are arranged in a square lattice and the helium gas pressure alternates between a relatively high value and a relatively low value so that each rod has as its closest neighbors up to four rods containing helium gas at the other pressure value.

  13. Osteoporosis and trace elements

    DEFF Research Database (Denmark)

    Aaseth, J.; Boivin, G.; Andersen, Ole

    2012-01-01

    More than 200 million people are affected by osteoporosis worldwide, as estimated by 2 million annual hip fractures and other debilitating bone fractures (vertebrae compression and Colles' fractures). Osteoporosis is a multi-factorial disease with potential contributions from genetic, endocrine...... in new bone and results in a net gain in bone mass, but may be associated with a tissue of poor quality. Aluminum induces impairment of bone formation. Gallium and cadmium suppresses bone turnover. However, exact involvements of the trace elements in osteoporosis have not yet been fully clarified...

  14. [Healthcare marketing elements].

    Science.gov (United States)

    Ameri, Cinzia; Fiorini, Fulvio

    2014-01-01

    Marketing puts its foundation on a few key concepts: need-demand, product-service, satisfaction, exchange, market, or business structure manufacturing / supply. The combination of these elements allows you to build an effective marketing strategy. Crucial in this respect is to remember the Porter matrix, which shows that for a correct analysis of the relevant market is necessary to refer to the "five forces at play", ie: customers, competitors, new entrants and substitutes threat. Another key lever for proper marketing oriented approach is the continuous and constant monitoring of the application, anticipating their dissatisfactions.

  15. Technical Elements (CCT1)

    DEFF Research Database (Denmark)

    Thomsen, Kirsten Engelund; Wittchen, Kim Bjarne

    2017-01-01

    Many of the aspects dealt with in the CA EPBD are closely interlinked with each other and may refer to both new and existing buildings, as well as to inspection and certification. This is also true for technical aspects, such as the calculation methodologies, and how to include technical systems......’ efficiency or how to integrate renewable energy within them. The central team for Technical Elements deals with issues of a technical nature, which are common to new and existing buildings, and/or with minimum demands, certification and inspection. This report focuses on the implementation of Articles 3, 4...

  16. Optical Finite Element Processor

    Science.gov (United States)

    Casasent, David; Taylor, Bradley K.

    1986-01-01

    A new high-accuracy optical linear algebra processor (OLAP) with many advantageous features is described. It achieves floating point accuracy, handles bipolar data by sign-magnitude representation, performs LU decomposition using only one channel, easily partitions and considers data flow. A new application (finite element (FE) structural analysis) for OLAPs is introduced and the results of a case study presented. Error sources in encoded OLAPs are addressed for the first time. Their modeling and simulation are discussed and quantitative data are presented. Dominant error sources and the effects of composite error sources are analyzed.

  17. Elements of energy conversion

    CERN Document Server

    Russell, Charles R

    2013-01-01

    Elements of Energy Conversion brings together scattered information on the subject of energy conversion and presents it in terms of the fundamental thermodynamics that apply to energy conversion by any process. Emphasis is given to the development of the theory of heat engines because these are and will remain most important power sources. Descriptive material is then presented to provide elementary information on all important energy conversion devices. The book contains 10 chapters and opens with a discussion of forms of energy, energy sources and storage, and energy conversion. This is foll

  18. "Jõulujazzi" kõige "jazzim" kontsert / Joosep Sang

    Index Scriptorium Estoniae

    Sang, Joosep

    2011-01-01

    29. novembrist kuni 17. detsembrini toimunud festivali kontsertidest, pikemalt 11. detsembril Vene Kultuurikeskuses kontserdist, kus esinesid trummar Francis Lassus, saksofonist Philippe Sellam ja bassist Linley Marthe

  19. Mata Ketiga: Se Laen, Sang Pembebas Sistem Pendidikan Tinggi Akuntansi

    Directory of Open Access Journals (Sweden)

    Iwan Triyuwono

    2010-04-01

    Full Text Available The objectives of the study are to criticize the existing accounting education especially in Indonesian universities and to give an alternative idea for a better one. It is done as there is a strong indication that accounting education is driven by intellectual intelligence, market, and other artificial interests. Through a deconstruction approach and critical analysis, the study suggests the internalization of “Mata Ketiga” (the Third Eye in accounting curriculum. Mata Ketiga, that refers to spiritual intelligence, is “the Other” that is consciously entered to the singularity of intellectual intelligence of modern curriculum. Under the internalization of Mata Ketiga, accounting education can be emancipated from the domination of intellectual intelligence, market, and other artificial interests. By doing so, the education may guide an accounting student to find his/her “real self” without neglecting contemporary accounting competence.

  20. SERINGUE LOUIS JUBÉ POUR LA TRANSFUSION DU SANG PUR

    Directory of Open Access Journals (Sweden)

    Academia Nacional de Medicina

    2011-01-01

    Full Text Available

    DENOMINACIÓN:  

    Fabricante: Duffaud & Cie

    Año: 1924

    Medidas: 19,5 x 6 cm

    Volumen: 5 cc

    Materiales: Acero, vidrio y caucho 

    Esta jeringa para transfusión de sangre fue diseñada en Paris por el médico francés, Louis Jubé. Fue desarrollada en 1923, aunque la publicación de la patente sólo se registra hasta el 1 de julio de 1924. 

    Este sistema de transfusión de sangre fue el más utilizado en Europa durante la década de los años veinte. La jeringa está compuesta por un cilindro de vidrio y dispone de dos conexiones laterales que, por medio de agujas de diverso calibre, permitían la punción del donante y el receptor. La jeringa más utilizada fue de 5 cc. Para su uso, se debía punzar primero al receptor y una vez canalizada la vena se conectaba al donante. La sangre llenaba el émbolo y luego de varias aspiraciones se trasmitía la sangre al receptor a un ritmo de 5cc cada 3-4 segundos. Este tipo de jeringa podía llegar a permitir transfusiones de 200cc hasta 500cc en algunos casos. Sin embargo, a medida que pasaba el tiempo, la transfusión se dificultaba debido a la coagulación de la sangre y era necesario iniciar el proceso nuevamente. 

  1. Prevalence des hemolysines chez les donneurs de sang de groupe ...

    African Journals Online (AJOL)

    Objectifs : Déterminer la fréquence et le titre des hémolysines anti-A et anti-B dans la population des donneurs O et de prédire de l'intérêt de la systématisation de leur recherche chez tous les donneurs O par l'évaluation du risque d'accident transfusionnels liés aux hémolysines. Méthodologie : Etude prospective au ...

  2. DIE PLEK VAN SANG EN MUSIEK IN DIE PROTESTANTSE ...

    African Journals Online (AJOL)

    Test

    Sy moet hierdie opdrag uitvoer deur mid del van die Prediking d.w.s. deur middel van die Woord-vorm, maar ook deur die bediening van die sakramente, dws. deur middel van die vorm van die Daad. Maar nou wil God nie hê dat die Kerk slegs één maal die Evangelie sal predik en die mense sal doop om hulle daarna.

  3. Nuclear fuel element

    International Nuclear Information System (INIS)

    Iwano, Yoshihiko.

    1993-01-01

    Microfine cracks having a depth of less than 10% of a pipe thickness are disposed radially from a central axis each at an interval of less than 100 micron over the entire inner circumferential surface of a zirconium alloy fuel cladding tube. For manufacturing such a nuclear fuel element, the inside of the cladding tube is at first filled with an electrolyte solution of potassium chloride. Then, electrolysis is conducted using the cladding tube as an anode and the electrolyte solution as a cathode, and the inner surface of the cladding tube with a zirconium dioxide layer having a predetermined thickness. Subsequently, the cladding tube is laid on a smooth steel plate and lightly compressed by other smooth steel plate to form microfine cracks in the zirconium dioxide layer on the inner surface of the cladding tube. Such a compressing operation is continuously applied to the cladding tube while rotating the cladding tube. This can inhibit progress of cracks on the inner surface of the cladding tube, thereby enabling to prevent failure of the cladding tube even if a pellet/cladding tube mechanical interaction is applied. Accordingly, reliability of the nuclear fuel elements is improved. (I.N.)

  4. Heavy-element nucleosynthesis

    International Nuclear Information System (INIS)

    Mathews, G.J.

    1990-01-01

    New measurements and theoretical studies of nuclear properties, together with new astronomical data on the growth of heavy-element abundances during the early history of the Galaxy, now provide a clearer picture of where in nature the elements heavier than iron are produced by rapid (r-process) and show (s-process) neutron capture reactions. The nuclear data suggest that the r-process involves a high-neutron-density beta-flow equilibrium environment and that the s-process may have occurred at a temperature and neutron density consistent with a 13 C(α,n) 16 0 neutron source. The astronomical data, when compared with simple galactic chemical evolution modes, suggests that the r-process is associated with type II supernovae and that the neutron source must be manufactured by the star. Low-mass type II supernovae are proposed as the most important contributors to the r-process. A 13 C neutron source in intermediate-mass stars is proposed for the s-process. 64 refs., 7 figs

  5. Improved nuclear fuel element

    International Nuclear Information System (INIS)

    1980-01-01

    The invention is of a nuclear fuel element which comprises a central core of a body of nuclear fuel material selected from the group consisting of compounds of uranium, plutonium, thorium and mixtures thereof, and an elongated composite cladding container comprising a zirconium alloy tube containing constituents other than zirconium in an amount greater than about 5000 parts per million by weight and an undeformed metal barrier of moderate purity zirconium bonded to the inside surface of the alloy tube. The container encloses the core so as to leave a gap between the container and the core during use in a nuclear reactor. The metal barrier is of moderate purity zirconium with an impurity level on a weight basis of at least 1000ppm and less than 5000ppm. Impurity levels of specific elements are given. Variations of the invention are also specified. The composite cladding reduces chemical interaction, minimizes localized stress and strain corrosion and reduces the likelihood of a splitting failure in the zirconium alloy tube. Other benefits are claimed. (U.K.)

  6. Parâmetros ruminal, sangüíneo e urinário e digestibilidade de nutrientes em novilhas leiteiras recebendo diferentes níveis de monensina Effects of different dietary levels of monensin on nutrient digestibility and on ruminal, blood and urinary metabolites in dairy heifers

    Directory of Open Access Journals (Sweden)

    Marcus Vinicius Morais de Oliveira

    2005-12-01

    Full Text Available Objetivou-se verificar a influência da inclusão de diferentes níveis do ionóforo monensina sódica na dieta sobre os parâmetros ruminal, sangüíneo e urinário e a digestibilidade aparente em novilhas leiteiras. Foram coletadas amostras de líquido ruminal (imediatamente antes e duas horas após a alimentação, sangue, urina e fezes de 28 novilhas da raça Holandesa mantidas em regime de confinamento por 84 dias. As dietas possuíam 32,84% de concentrado (grão de milho, farelo de soja, uréia e mistura mineral, 33,58% de silagem de milho e 33,58% de cana-de-açúcar na matéria seca. Os níveis de ionóforo avaliados foram 0, 14, 28 e 42 mg de monensina/kg de matéria seca da dieta. O experimento foi instalado conforme delineamento inteiramente casualizado, com quatro tratamentos e sete repetições, realizando-se estudos de regressão e contrastes ortogonais. Antes da alimentação, a monensina não influenciou o pH ruminal e a concentração de amônia e dos ácidos acético, propiônico e butírico, mas promoveu redução da relação acetato:propionato. Duas horas após a alimentação, verificou-se redução do pH e da relação acetato:propionato; e aumento da concentração de ácido propiônico. O estudo de contrastes revelou que ocorreu diminuição da concentração de amônia antes da alimentação. Não foram verificadas mudanças significativas nas concentrações de glicose e uréia sangüínea. A monensina também não influenciou os consumos de matéria seca (MS, matéria orgânica, proteína bruta, extrato etéreo (EE, carboidratos totais (CHOT e fibra em detergente neutro. As digestibilidades da MS, EE e CHOT e a perda de nitrogênio urinário apresentaram respostas quadráticas.The objective of this trial was to study the effects of different dietary levels of the ionophore monensin on apparent digestibility of nutrients and on ruminal, blood, and urinary metabolites in dairy heifers. Samples of ruminal fluid (pre

  7. Interferência dos ácidos graxos ômega-3 nos lipídeos sangüíneos de ratos submetidos ao exercício de natação Omega-3 fatty acids interference on the blood lipids of rats subjected to swimming exercise

    Directory of Open Access Journals (Sweden)

    Bettina Moritz

    2008-12-01

    Full Text Available OBJETIVO: Investigar os efeitos da suplementação com ácidos graxos ômega-3, nas doses de 0,5 e 1,0g/kg/dia, nos lipídeos sangüíneos de ratos submetidos ou não ao protocolo do nado. MÉTODOS: Ratos Wistar foram divididos em grupos: controle, controle+nado, ácidos graxos ômega-3 e ácidos graxos ômega-3+nado. Os ácidos graxos ômega-3 e ácidos graxos ômega-3+nado receberam suplementação; os demais receberam água por gavagem. Os controle+nado e ácidos graxos ômega-3+nado foram submetidos ao exercício. Foram avaliadas as concentrações plasmáticas de colesterol total, triglicérides e lipoproteína de alta densidade, antes e após os procedimentos experimentais. RESULTADOS: No protocolo de 0,5g/kg/dia, em relação às concentrações de colesterol total, foi observada redução significativa proporcionalmente maior no grupo ácidos graxos ômega-3+nado, apesar de o grupo controle+nado e o ácidos graxos ômega-3 também terem apresentado diminuição. No ensaio de 1,0g/kg/dia todos os grupos apresentaram uma diminuição que foi maior, respectivamente, no ácidos graxos ômega-3+nado e, a seguir, no ácidos graxos ômega-3. Quanto aos triglicérides, foram encontradas reduções em todos os grupos experimentais, que foi maior no grupo ácidos graxos ômega-3+nado, do protocolo de 0,5g/kg/dia, enquanto que no de 1,0g/kg/dia a diminuição foi significativa apenas nos grupos ácidos graxos ômega-3 e ácidos graxos ômega-3+nado. Quanto ao HDL, no protocolo de 0,5g/kg/dia foi encontrado aumento nos animais que não foram suplementados, enquanto que em todos os grupos de 1,0g/kg/dia houve uma diminuição do HDL. CONCLUSÃO: A suplementação com ácidos graxos ômega-3 nas doses 0,5 ou 1,0g/kg/dia, associada ao nado, reduzem as concentrações plasmáticas de colesterol total e triglcérides, mas estudos adicionais, também com outras doses, são necessários para a compreensão da relação entre a ingestão de óleo de peixe e

  8. Distribuição fenotípica e a freqüência genotípica do sistema sangüíneo Duffy em pacientes com a doença de Jorge Lobo Phenotypic distribution and genotypic frequency of the Duffy blood group system in Jorge Lobo's disease patients

    Directory of Open Access Journals (Sweden)

    Eliane A. Silva

    2006-12-01

    Full Text Available A doença de Jorge Lobo é uma micose cutânea e subcutânea de evolução crônica, causada pelo Lacazia loboi. Os mecanismos envolvidos na suscetibilidade/resistência do hospedeiro frente ao agente não estão ainda elucidados, dentre eles encontra-se a constituição genética. Portanto, o objetivo deste trabalho é avaliar a distribuição fenotípica do grupo sangüíneo Duffy em pacientes com doença de Jorge Lobo e calcular suas freqüências gênicas. Foram analisados 21 pacientes, 13 caucasóides e oito mestiços (tipo moreno claro, provenientes do estado do Acre, e 44 indivíduos, não acometidos por esta doença, habitantes da cidade de Rio Branco (AC, como grupo controle. O fenótipo Duffy foi definido pela presença dos antígenos nas hemácias pela reação de aglutinação dos eritrócitos com anti-soros anti-Fya e anti-Fyb incubando-se a 37ºC e aplicando-se o teste da antiglobulina humana. Os resultados mostram que a distribuição fenotípica do sistema Duffy nos pacientes difere significativamente daquela observada nos controles, pela alta freqüência de indivíduos com fenótipo Fy(a-b-. Observa-se claramente que os pacientes apresentam maior freqüência do alelo FY e menor do alelo FYA do que os controles. O alelo FYB (não inclui os alelos que não são expressos tem praticamente a mesma freqüência nos dois grupos. Com relação à comparação entre distribuição do grupo sangüíneo Duffy com as formas clínicas, sugere maior número de pacientes com forma localizada da doença de Jorge Lobo apresentando um predomínio do fenótipo Fy(a-b+ seguido do fenótipo Fy(a-b- e inexistência do fenótipo Fy(a+b-. Por outro lado, temos a forma disseminada com maior incidência de fenótipo Fy(a+b-. A forma multifocal foi menos expressiva. Desse modo, podemos inferir uma provável prevalência de fenótipo Duffy negativo na região por nós estudada e os poucos dados disponíveis até o momento tornam clara a necessidade de

  9. Avaliação do efeito de sopas desidratadas ricas em fibras na redução do colesteroal sangüíneo em ratos Evaluation of the cholesterol-lowering efect of high-fiber dehydrated soup in rats

    Directory of Open Access Journals (Sweden)

    Hercia Stampini Duarte

    1998-12-01

    Full Text Available Neste estudo foi avaliado o efeito de quatro formulações dietéticas ricas em fibra solúvel na redução de colesterol sangüíneo em ratos. As formulações foram preparadas com farinha de soja desengordurada, farelo de aveia, cebola desidratada, fibra de soja, condimentos e aromas. Duas das formulações continham feijão preto FP(+ e FP(-, nos níveis de 40 e 30%, respectivamente. As outras duas continham feijão vermelho FV(+ e FV(-, nesses mesmos teores. Foram utilizados seis grupos de oito ratos machos, com peso médio inicial de 200g. O grupo Padrão recebeu dieta basal. O grupo Controle recebeu dieta de composição semelhante à Padrão, porém, acrescida de 1% de colesterol cristalino e 0,1% de ácido cólico. As demais dietas foram semelhantes ao grupo Controle, substituídas pelas formulações FV(+, FP(+, FV(- e FP(-, de modo a fornecerem 7,4% de fibra total da dieta. Ratos alimentados com dieta do grupo Controle apresentaram aumento significativo dos níveis de colesterol sérico, peso dos fígados, colesterol e lipídio total das fezes e dos fígados, em relação ao grupo recebendo dieta Padrão. As dietas FV(+, FP(+, FV(- e FP(-, não diferiram entre si quanto ao efeito nos níveis de lipídios séricos e glicose, no peso e lipídio total dos fígados e no peso, umidade e nitrogênio das fezes. No entanto, reduziram significativamente os níveis sangüíneos de colesterol total em 29,0%, os níveis de HDL - colesterol em 34,0%, o peso dos fígados em 11,7% e o colesterol do fígado em 9,0% em relação à dieta Controle. As dietas de feijão vermelho proporcionaram maior redução de colesterol no fígado e maior excreção de lipídio e colesterol nas fezes comparadas com as de feijão preto.The effect of 4 high fiber dietary formulas on reducing blood cholesterol levels in rats was evaluated in the present study. The products were formulated with defatted soy flour, oat bran, dehydrated onion, soy fiber and spices. Two of

  10. NIH Common Data Elements Repository

    Data.gov (United States)

    U.S. Department of Health & Human Services — The NIH Common Data Elements (CDE) Repository has been designed to provide access to structured human and machine-readable definitions of data elements that have...

  11. Joining elements of silicon carbide

    International Nuclear Information System (INIS)

    Olson, B.A.

    1979-01-01

    A method of joining together at least two silicon carbide elements (e.g.in forming a heat exchanger) is described, comprising subjecting to sufficiently non-oxidizing atmosphere and sufficiently high temperature, material placed in space between the elements. The material consists of silicon carbide particles, carbon and/or a precursor of carbon, and silicon, such that it forms a joint joining together at least two silicon carbide elements. At least one of the elements may contain silicon. (author)

  12. Trace element emissions from coal

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-09-15

    Trace elements are emitted during coal combustion. The quantity, in general, depends on the physical and chemical properties of the element itself, the concentration of the element in the coal, the combustion conditions and the type of particulate control device used, and its collection efficiency as a function of particle size. Some trace elements become concentrated in certain particle streams following combustion such as bottom ash, fly ash, and flue gas particulate matter, while others do not. Various classification schemes have been developed to describe this partitioning behaviour. These classification schemes generally distinguish between: Class 1: elements that are approximately equally concentrated in the fly ash and bottom ash, or show little or no fine particle enrichment, examples include Mn, Be, Co and Cr; Class 2: elements that are enriched in the fly ash relative to bottom ash, or show increasing enrichment with decreasing particle size, examples include As, Cd, Pb and Sb; Class 3: elements which are emitted in the gas phase (primarily Hg (not discussed in this review), and in some cases, Se). Control of class 1 trace elements is directly related to control of total particulate matter emissions, while control of the class 2 elements depends on collection of fine particulates. Due to the variability in particulate control device efficiencies, emission rates of these elements can vary substantially. The volatility of class 3 elements means that particulate controls have only a limited impact on the emissions of these elements.

  13. REACTOR FUEL ELEMENTS TESTING CONTAINER

    Science.gov (United States)

    Whitham, G.K.; Smith, R.R.

    1963-01-15

    This patent shows a method for detecting leaks in jacketed fuel elements. The element is placed in a sealed tank within a nuclear reactor, and, while the reactor operates, the element is sparged with gas. The gas is then led outside the reactor and monitored for radioactive Xe or Kr. (AEC)

  14. Accelerator vacuum system elements

    International Nuclear Information System (INIS)

    Sivokon', V.V.; Kobets, A.F.; Shvetsov, V.A.; Sivokon', L.V.

    1980-01-01

    Some elements of vacuum systems are investigated. Considerable attention has been given to the investigation into peculiarities in pumping out of a ionoguide for transportation of an accelerated charged particles beam the spread of which often attains a considerable length. The number of pumps over the ionoguide length is experimentally determined. It is shown that as a result of ionoguide warm-up the pumping out time is considerably reduced maximum permissible pressure is decreased by two orders and lesser rate of pump pumping out is required. The investigations have shown that when operating the ionoguide there is no necessity in setting up seals between the ionoguide and magnetodischarged pump. The causes of the phenomenon in which the pressure near the pump is greater than in the end of the ionoguide, are impurities carried in by the pump into the ionoguide volume and the pumping out capacity of the pressure converter

  15. Ucla, escuela elemental

    Directory of Open Access Journals (Sweden)

    Neutra, Richard J.

    1962-03-01

    Full Text Available La Escuela Elemental de Preparación de la Universidad de California, en Los Angeles, está dedicada a la educación e investigación y preparación del profesorado de la infancia. Se ha construido en un paraje maravilloso, de frondosa vegetación, frente a un terreno bastante quebrado, circunstancia que presta mayor encanto al conjunto, construido con gran pericia y adaptación al paisaje a base de una dominante horizontalidad, con materiales sencillos (ladrillos, hierro y madera y gran comunicación con la naturaleza mediante grandes cristaleras correderas que ensanchan las clases y las suplementan hacia el jardín de acuerdo con las nuevas normas y prácticas docentes.

  16. Improved nuclear fuel element

    International Nuclear Information System (INIS)

    1974-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has a metal liner disposed between the cladding and the nuclear fuel material and a high lubricity material in the form of a coating disposed between the liner and the cladding. The liner preferably has a thickness greater than the longest fission product recoil distance and is composed of a low neutron capture cross-section material. The liner is preferably composed of zirconium, an alloy of zirconium, niobium or an alloy of niobium. The liner serves as a preferential reaction site for volatile impurities and fission products and protects the cladding from contact and reaction with such impurities and fission products. The high lubricity material acts as an interface between the liner and the cladding and reduces localized stresses on the cladding due to fuel expansion and cracking of the fuel

  17. Probabilistic fracture finite elements

    Science.gov (United States)

    Liu, W. K.; Belytschko, T.; Lua, Y. J.

    1991-05-01

    The Probabilistic Fracture Mechanics (PFM) is a promising method for estimating the fatigue life and inspection cycles for mechanical and structural components. The Probability Finite Element Method (PFEM), which is based on second moment analysis, has proved to be a promising, practical approach to handle problems with uncertainties. As the PFEM provides a powerful computational tool to determine first and second moment of random parameters, the second moment reliability method can be easily combined with PFEM to obtain measures of the reliability of the structural system. The method is also being applied to fatigue crack growth. Uncertainties in the material properties of advanced materials such as polycrystalline alloys, ceramics, and composites are commonly observed from experimental tests. This is mainly attributed to intrinsic microcracks, which are randomly distributed as a result of the applied load and the residual stress.

  18. Nuclear fuel elements

    International Nuclear Information System (INIS)

    Obara, Hiroshi.

    1981-01-01

    Purpose: To suppress iodine release thereby prevent stress corrosion cracks in fuel cans by dispersing ferrous oxide at the outer periphery of sintered uranium dioxide pellets filled and sealed within zirconium alloy fuel cans of fuel elements. Constitution: Sintered uranium dioxide pellets to be filled and sealed within a zirconium alloy fuel can are prepared either by mixing ferric oxide powder in uranium dioxide powder, sintering and then reducing at low temperature or by mixing iron powder in uranium dioxide powder, sintering and then oxidizing at low temperature. In this way, ferrous oxide is dispersed on the outer periphery of the sintered uranium dioxide pellets to convert corrosive fission products iodine into iron iodide, whereby the iodine release is suppressed and the stress corrosion cracks can be prevented in the fuel can. (Moriyama, K.)

  19. Nuclear fuel element

    International Nuclear Information System (INIS)

    Hirama, H.

    1978-01-01

    A nuclear fuel element comprises an elongated tube having upper and lower end plugs fixed to both ends thereof and nuclear fuel pellets contained within the tube. The fuel pellets are held against the lower end plug by a spring which is supported by a setting structure. The setting structure is maintained at a proper position at the middle of the tube by a wedge effect caused by spring force exerted by the spring against a set of balls coacting with a tapered member of the setting structure thereby wedging the balls against the inner wall of the tube, and the setting structure is moved free by pushing with a push bar against the spring force so as to release the wedge effect

  20. Finite element modelling

    International Nuclear Information System (INIS)

    Tonks, M.R.; Williamson, R.; Masson, R.

    2015-01-01

    The Finite Element Method (FEM) is a numerical technique for finding approximate solutions to boundary value problems. While FEM is commonly used to solve solid mechanics equations, it can be applied to a large range of BVPs from many different fields. FEM has been used for reactor fuels modelling for many years. It is most often used for fuel performance modelling at the pellet and pin scale, however, it has also been used to investigate properties of the fuel material, such as thermal conductivity and fission gas release. Recently, the United Stated Department Nuclear Energy Advanced Modelling and Simulation Program has begun using FEM as the basis of the MOOSE-BISON-MARMOT Project that is developing a multi-dimensional, multi-physics fuel performance capability that is massively parallel and will use multi-scale material models to provide a truly predictive modelling capability. (authors)

  1. Heavy-element research

    International Nuclear Information System (INIS)

    Anon.

    1975-01-01

    The status is reported of studies on the solid-state chemistry of the actinides and lanthanides, spectroscopy of actinide compounds, and dynamic chemical description of actinide elements in solution. Phase studies were done on Rb 2 UO 4 , K 2 UO 4 , Li 2 UO 4 , and Es 2 U 2 O 7 . The lithium neptunate (VI) system was investigated and the existence of Li 2 NpO 4 was established. In oxidation-reduction studies it was shown that Am(III) can be electrolytically oxidized to Am(IV) in strong H 3 PO 4 , but Cf(III) and Pr(III) do not oxidize. The low-temperature absorption spectrum of thin films of NpBr 3 was investigated. (U.S.)

  2. ELEMENTAL FORMS OF HOSPITALITY

    Directory of Open Access Journals (Sweden)

    Maximiliano Emanuel Korstanje

    2010-11-01

    Full Text Available Modern studies emphasized on the needs of researching the hospitality as relevant aspects of tourism and hospitality fields. Anyway, these approaches are inextricably intertwined to the industry of tourism and do not take seriously the anthropological and sociological roots of hospitality. In fact, the hotel seems to be a partial sphere of hospitality at all. Under this context, the present paper explores the issue of hospitality enrooted in the political and economic indo-European principle of free-transit which is associated to a much broader origin.  Starting from the premise etymologically hostel and hospital share similar origins, we follow the contributions of J Derrida to determine the elements that formed the hospitality up to date.

  3. Photo-switching element

    Energy Technology Data Exchange (ETDEWEB)

    Masaki, Yuichi

    1987-10-31

    Photo-input MOS transistor (Photo-switching element) cannot give enough ON/OFF ratio but requires an auxiliary condenser for a certain type of application. In addition, PN junction of amorphous silicon is not practical because it gives high leak current resulting in low electromotive force. In this invention, a solar cell was constructed with a lower electrode consisting of a transparent electro-conducting film, a photosensitive part consisting of an amorphous Si layer of p-i-n layer construction, and an upper metal electrode consisting of Cr or Nichrome, and a thin film transistor was placed on the solar cell, and further the upper metal electrode was co-used as a gate electrode of the thin film transistor; this set-up of this invention enabled to attain an efficient photo-electric conversion of the incident light, high electromotive force of the solar cell, and the transistor with high ON/OFF ratio. (3 figs)

  4. The Chemistry of Superheavy Elements

    CERN Document Server

    Schädel, M

    2003-01-01

    The chemistry of transactinide or superheavy elements has reached element 108. Preparations are under way to leap to element 112 and beyond. The current status of this atom-at-a-time chemical research and its future perspectives are reviewed from an experimental point of view together with some of the interesting results from n -rich nuclides near and at the N=162 neutron shell. Experimental techniques and important results enlightening typical chemical properties of elements 104 through 108 are presented in an exemplary way. From the results of these experiments it is justified to place these elements in the Periodic Table of the Elements in to groups 4 through 8, respectively. However, mainly due to the influence of relativistic effects, it is no longer possible to deduce detailed chemical properties of these superheavy elements simply from this position.

  5. Transplutonium elements - a literature survey

    International Nuclear Information System (INIS)

    Sivaramakrishnan, C.K.; Jadhav, A.V.

    1974-01-01

    The report surveys reported work on the discovery of transplutonium elements and their production through various methods like bombardment of heavy elements with charged ions, successive neutron captures on heavy elements in reactors and multiple neutron captures by heavy elements during nuclear explosions. Estimated yields of transplutonium elements in special targets irradiated in reactors, and also as byproducts from spent power reactor fuels are quoted. Various chemical procedures adopted for recovery of these elements from irradiated target and also from power reactor fuel reprocessing streams are described. A brief survey of shielded facilities available at various centres for transplutonium programmes is also included. Major uses of some of these heavy elements are described. (author)

  6. EAF optimal managing elements

    Science.gov (United States)

    Ioana, A.; Constantin, N.; Dragna, E. C.

    2017-01-01

    Electric Arc Furnaces (EAF) is an important and complex aggregate. We present elements of EAF operating efficiency. The reliability of the EAF is mainly determined by electric circuit reliability and especially of the transformator of the furnace. This due to the fact that, in an electric steel plant, the objective „24 tapping/day” involves. Due to the complexity of the process, the EAF operation needs a computer usage and, in his componence, it must have two independent calculation units (UC1) and (UC2). Based on these two input sets (Σi1) and ((Σi2), the calculation unit (UC1) builds the general operation procedure based on mathematical methods. For that purpose, there are used the results of the 5 mathematical methods: the mathematical model to write-off the function objective (M.F.O.); the mathematical model of calculating the charge (M.C.C.); the mathematical model of conducting the effective melt (M.C.M.); the mathematical model of reheating the charge (M.R.C.); the mathematical model of blasting the reactive dusts (M.B.R.D.).

  7. Nuclear fuel element

    International Nuclear Information System (INIS)

    Armijo, J.S.

    1977-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed which has a composite cladding having a substrate, a metal barrier metallurgically bonded to the inside surface of the substrate and an inner layer metallurgically bonded to the inside surface of the metal barrier. In this composite cladding, the inner layer and the metal barrier shield the substrate from any impurities or fission products from the nuclear fuel material held within the composite cladding. The metal barrier forms about 1 to about 4 percent of the thickness of the cladding and is comprised of a metal selected from the group consisting of niobium, aluminum, copper, nickel, stainless steel, and iron. The inner layer and then the metal barrier serve as reaction sites for volatile impurities and fission products and protect the substrate from contact and reaction with such impurities and fission products. The substrate and the inner layer of the composite cladding are selected from conventional cladding materials and preferably are a zirconium alloy. Also in a preferred embodiment the substrate and the inner layer are comprised of the same material, preferably a zirconium alloy. 19 claims, 2 figures

  8. Neutron absorbing element

    International Nuclear Information System (INIS)

    Kasai, Shigeo.

    1991-01-01

    The present invention concerns a neutron absorbing element of a neutron shielding member used for an LMFBR type reactor. The inside of a fuel can sealed at both of the upper and the lower ends thereof with plugs is partitioned into an upper and a lower chambers by an intermediate plug. A discharging hole is disposed at the upper end plug, which is in communication with the outside. A communication tube is disposed at the intermediate end plug and it is in communication with the lower chamber containing B 4 C pellets. A cylindrical support member having three porous plugs connected in series is disposed at the lower surface of the discharging hole provided at the upper end plug. Further, the end of the discharging hole is sealed with high temperature solder and He atmosphere is present at the inside of the fuel can. With such a constitution, the supporting differential pressure of the porous plugs can be made greater while discharging He gases generated from B 4 C to the outside. Further, the porous plugs can be surely wetted by coolants. Accordingly, it is possible to increase life time and shorten the size. (I.N.)

  9. Chemistry of transuranium elements

    International Nuclear Information System (INIS)

    Anon.

    1976-01-01

    The half-wave amalgamation potential of No (element 102) was determined. Studies on the preparation and properties of Cf are reported; previously reported results on Es were confirmed. The heat of solution of Bk was measured. Spectroscopic and x-ray diffraction studies of Es-253 bromides are reported. Salicylate complexes with Sm(III), Am(III), Th(IV), and U(IV)O 2 were prepared; crystal data are given. Results of studies on the effect of secondary bonds on the strength of O double bond Np double bond O bonds are reported. The M series x rays of Np were measured. Anomalous spin--orbit splitting of the 4f level in the actinide series is reported. Progress is reported in studies on the Cf oxide system for oxygen pressures up to 760 mm and temperatures between 25 and 1000 0 C, as well as structural parameters of transplutonium oxysulfates and oxysulfides and actinide and lanthanide hydroxides. The electron paramagnetic resonance spectrum of 253 Es 2+ was observed in the cubic monocrystal hosts BaF 2 and SrCl 2

  10. Chemistry of the superheavy elements.

    Science.gov (United States)

    Schädel, Matthias

    2015-03-13

    The quest for superheavy elements (SHEs) is driven by the desire to find and explore one of the extreme limits of existence of matter. These elements exist solely due to their nuclear shell stabilization. All 15 presently 'known' SHEs (11 are officially 'discovered' and named) up to element 118 are short-lived and are man-made atom-at-a-time in heavy ion induced nuclear reactions. They are identical to the transactinide elements located in the seventh period of the periodic table beginning with rutherfordium (element 104), dubnium (element 105) and seaborgium (element 106) in groups 4, 5 and 6, respectively. Their chemical properties are often surprising and unexpected from simple extrapolations. After hassium (element 108), chemistry has now reached copernicium (element 112) and flerovium (element 114). For the later ones, the focus is on questions of their metallic or possibly noble gas-like character originating from interplay of most pronounced relativistic effects and electron-shell effects. SHEs provide unique opportunities to get insights into the influence of strong relativistic effects on the atomic electrons and to probe 'relativistically' influenced chemical properties and the architecture of the periodic table at its farthest reach. In addition, they establish a test bench to challenge the validity and predictive power of modern fully relativistic quantum chemical models. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

  11. Experimental Study of Elements Promoting Mixing in Fuel Elements

    International Nuclear Information System (INIS)

    Silin, Nicolas; Juanico, Luis; Delmastro, Dario

    2003-01-01

    In the present work a thermal tracing technique is used to measure the increase of the mixing between subchannels in the presence of different mixing elements.As representative elements a spacer, a spacer with mixing vanes and turbulence promoter buttons were considered.The performance of these elements was evaluated by studying the behavior of a thermal trace in each case.Also the pressure drop for each case is presented.The results present a qualitative and quantitative guide for the application of each one of these appendages in future nuclear elements

  12. Balanço eletrolítico e níveis de proteína bruta sobre parâmetros sangüíneos e ósseos de frangos de corte aos 21 dias de idade Electrolyte balance and crude protein levels on blood and bone parameters of 21 days broiler chicks

    Directory of Open Access Journals (Sweden)

    Flávio Medeiros Vieites

    2004-12-01

    Full Text Available Foi realizado um experimento com o objetivo de determinar os melhores valores de balanço eletrolítico (BE para frangos de corte de 1 a 21 dias. Utilizaram-se 2.112 pintinhos da marca comercial Ross, machos, criados em boxes de galpão de alvenaria, cobertos com maravalha e alimentados com duas rações basais, uma com 20 e outra com 23% de proteína bruta (PB à base de milho e de farelo de soja, combinadas com níveis de BE de 00; 50; 100; 150; 200; 250; 300 e 350 mq/kg. Foi utilizado delineamento experimental inteiramente casualizado, em esquema fatorial 8x2 (oito níveis de BE e dois níveis de PB, seis repetições e 22 aves por unidade experimental. Avaliaram-se os níveis sangüíneos de cálcio, fósforo e proteínas totais aos 21 dias de idade. As cinzas, o cálcio, o fósforo, o potássio, o sódio e o magnésio dos ossos também foram quantificados. Aos 21 dias de idade, os melhores valores estimados de BE foram 168 (20% PB e 245 (23% PB mEq/kg para o cálcio no sangue. O valor de BE obtido para o menor nível de proteínas totais foi de 189 (23% PB mEq/kg. Os melhores valores de BE no sangue foram os pontos de mínimo na curva de regressão. O melhor valor de BE para o cálcio no tibiotarso foi de 132 mEq/kg (23% PB. O BE da dieta deve situar-se entre 150 e 200 mEq/kg para frangos de corte de 1 a 21 dias de idade.An experiment was conducted to determine the best electrolyte balance (EB for broiler chicks from one to 21 days of age, based on blood and bone parameters. One day old chicks, male, Ross were reared on floor covered with shaving woods and fed with two corn-soybean meal based diet with 20 and 23% of crude protein (CP combined with 0; 50; 100; 150; 200; 250; 300 and 350 mEq/kg of EB. The experiment was analised as a completely randomized design in a factorial arrangement of treatments (two CP levels and eight EB with six replicates of 22 chicks each. It were evaluated blood levels of calcium, phosphorus and total proteins

  13. The Relationship between Blood Injury and Absorbed Dose in Criticality Accidents; Relations entre la Deterioration du Sang et la Dose Absorbee lors d'Accidents Dus a la Formation d'un Etat Critique; Svyaz' mezhdu velichinoj pogloshchennoj dozy pri avariyakh na reaktorakh, dostigshikh kritichnosti, i narusheniem sostava krovi; Relacion entre las Hemolesiones y la Dosis Absorbida en los Accidentes de Criticidad

    Energy Technology Data Exchange (ETDEWEB)

    Dennis, J. A. [Health Physics and Medical Division, Atomic Energy Research Establishment, Harwell (United Kingdom)

    1964-03-15

    The neutron and gamma doses to individuals exposed in criticality accidents have been recalculated to yield the surface-absorbed dose to the trunk of the body. The relationship is examined between this dose estimate and blood-count profile scores that are based on the scoring system of N. Wald and G. E. Thoma for deviations from the normal of the lymphocyte, neutrophil and platelet-peripheral blood counts. It is shown that a quantity based on the surface-absorbed gamma dose and the Na{sup 24} activity in the blood shows a better correlation with the blood-count profile score and is a better prognostic guide for the degree of radiation injury than any of the conventional dose estimates. The R. B. E's of the heavy-particle recoil doses deduced from these observations are consistent in general with values obtained from experiments on dogs. (author) [French] L'auteur a fait un nouveau calcul des doses de neutrons et de rayons gamma delivrees aux personnes exposees lors d'accidents due a la formation d'un etat critique, pour obtenir la dose en surface absorbee par le tronc. Il a etudie la relation entre cette estimation de la dose et la 'courbe resultante de numeration globulaire' de N. Wald et G. E. Thoma du point de vue des anomalies en lymphocytes, polynucleaires neutrophiles et plaquettes. Il montre qu'une quantite fondee sur la dose absorbee en surface de rayons gamma et l'activite de {sup 24}Na dans le sang accuse une meilleure correlation avec la courbe resultante de numeration globulaire et permet de mieux prevoir le degre de radiolesion que toute autre estimation classique de la dose. Les EBR des doses dues aux particules lourdes de recul, deduites de ces observations, concordent dans l'ensemble avec les valeurs obtenues au cours d'experiences sur des chiens. (author) [Spanish] El autor reviso sus calculos sobre las dosis de neutrones y rayos gamma en los sujetos expuestos a consecuencia de accidentes de criticidad, a fin de determinar las dosis superficiales

  14. Transcranial doppler in sickle cell anaemia: evaluation of brain blood flow parameters in children of Aracaju, Northeast - Brazil Doppler transcraniano em portadores de anemia falciforme: estudo dos parâmetros de fluxo sangüíneo cerebral em crianças de Aracaju, Sergipe

    Directory of Open Access Journals (Sweden)

    Hyder Aragão de Melo

    2008-06-01

    Full Text Available BACKGROUND: Environmental factors interfere on sickle cell anaemia (SCA. Transcanial Doppler (TCD is important to evaluate cerebrovascular disease. OBJECTIVE: To evaluate brain haemodynamic profile of children with SCA in Sergipe. METHODS: Cross sectional study (group1: SCA patients aged 3-18; group2: age and sex matched healthy individuals. Baseline brain flow was evaluated. RESULTS: Group1=34 patients; group 2=81 controls. SCA patients had mean velocity (MV=125.69 cm/s±23.40; pulsatility index (PI=0.66±0.10; middle cerebral artery ratio (MCAr=14.53±15.23; right anterior cerebral artery/right middle cerebral artery=0.77±0.20; left anterior cerebral artery/left middle cerebral artery=0.78±0.20. Controls had MV=79.44±15.54; PI=0.82±0.11; MCAr=13.19±13.77; right anterior cerebral artery/right middle cerebral artery=0.80±0.16; left anterior cerebral artery/left middle cerebral artery=0.84±0.18. MV and PI differences were statistically significant between groups. MV was related to age but not to gender. CONCLUSION: MV evaluation using TCD was similar to international standards and possible to be used in our setting.INTRODUÇÃO: Aspectos ambientais interferem na apresentação da anemia falciforme (AF. Doppler transcraniano (DTC é útil na avaliação do risco para doença cerebrovascular em pacientes com AF. OBJETIVO: Avaliar o perfil hemodinâmico cerebral de crianças com AF em Sergipe. MÉTODO: Estudo transversal (grupo1: portadores de AF 3-18 anos; grupo2: indivíduos saudáveis, pareados por idade e gênero. Foram avaliadas medidas de fluxo sangüíneo cerebral basal. RESULTADOS: Grupo1 (n=34: velocidade média (Vm=125,69 cm/s ±23,40; índice de pulsatilidade (Ip=0,66±0,10; relação entre artéria cerebral média (ACMs=14,53±15,23; artéria cerebral anterior (ACA/ACM direita=0,77±0,20; ACA/ACM esquerda=0,78±0,20. Grupo 2 (n=81: Vm=79,44 cm/s ±15,54; Ip=0,82±0,11, relação entre ACMs=13,19±13,77, ACA/ACM direita=0,80±0

  15. Hidrolisado de mucosa intestinal de suínos em substituição ao plasma sangüíneo em dietas para leitões de 21 a 49 dias Hydrolyzed of intestinal mucosa of swine in substitution to blood plasma in diets of pigs from 21 to 49 days

    Directory of Open Access Journals (Sweden)

    Anderson Corassa

    2007-12-01

    Full Text Available Um experimento foi conduzido para avaliar o efeito da substituição parcial ou total do plasma sangüíneo por hidrolisado de mucosa intestinal de suínos (HI em dietas para leitões de 21 a 49 dias. Cento e quarenta leitões desmamados aos 21,7 ± 2,9 dias com peso médio de 5,54 ± 0,65 kg foram distribuídos em um delineamento experimental de blocos ao acaso, com cinco tratamentos, sete repetições e quatro animais por unidade experimental. O experimento foi dividido nas fases de 21 a 35 dias e de 36 a 49 dias de idade. Os tratamentos consistiram de uma dieta com plasma e de quatro dietas contendo diferentes níveis dos produtos HI 50 e HI 62 em substituição ao plasma. A substituição parcial ou total do plasma pelos produtos HI 50 e HI 62 não resultou em diferenças no consumo médio diário, no ganho de peso médio diário e na conversão alimentar de leitões nos períodos avaliados. Os pesos absoluto e relativo das vísceras funcionais não foram afetados pelos tratamentos. Não houve efeito das dietas sobre as características de integridade intestinal no duodeno, jejuno e íleo de leitões com 35 dias de idade. Os produtos HI 50 e HI 62 podem substituir total ou parcialmente o plasma em rações para leitões de 21 a 49 dias de idade sem efeitos significativos.A trial was conduced to evaluate the effect partial or total substitution of blood plasma for hydrolyzed of intestinal mucosa of swine (HI in diets of pigs from 21 to 49 days of age. A total of 140 piglets weaned at 21.7 ± 2.9 days of age with average weight of 5.54 ± 0.65 kg were allotted to a randomized experimental block design, with five treatments, seven replications of four animals per experimental unit. The experiment was divided in the phases from 21 to 35 days and from 36 to 49 days of age. The treatments consisted of a diet with plasma and four diets with different levels of HI 50 and HI 62 products in substitution of plasma. The partial or total plasma

  16. Analog elements for transuranic chemistries

    International Nuclear Information System (INIS)

    Weimer, W.C.

    1982-01-01

    The analytical technique for measuring trace concentrations of the analog rare earth elements has been refined for optimal detection. The technique has been used to determine the rare earth concentrations in a series of geological and biological materials, including samples harvested from controlled lysimeter investigations. These studies have demonstrated that any of the trivalent rare earth elements may be used as analog elements for the trivalent transuranics, americium and curium

  17. Photoshop Elements 10 For Dummies

    CERN Document Server

    Obermeier, Barbara

    2011-01-01

    Perfect your photos and images with this "focused" guide to the latest version of Photoshop Elements For most of us, the professional-level Photoshop is overkill for our needs. Amateur photographers and photo enthusiasts turn to Photoshop Elements for a powerful but simpler way to edit and retouch their snapshots. Photoshop Elements 10 For Dummies, fully updated and revised for the latest release of this software product, helps you navigate Elements to create, edit, fix, share, and organize the high-quality images you desire. Full color pages bring the techniques to life and make taking great

  18. Rare-earth elements

    Science.gov (United States)

    Van Gosen, Bradley S.; Verplanck, Philip L.; Seal, Robert R.; Long, Keith R.; Gambogi, Joseph; Schulz, Klaus J.; DeYoung,, John H.; Seal, Robert R.; Bradley, Dwight C.

    2017-12-19

    The rare-earth elements (REEs) are 15 elements that range in atomic number from 57 (lanthanum) to 71 (lutetium); they are commonly referred to as the “lanthanides.” Yttrium (atomic number 39) is also commonly regarded as an REE because it shares chemical and physical similarities and has affinities with the lanthanides. Although REEs are not rare in terms of average crustal abundance, the concentrated deposits of REEs are limited in number.Because of their unusual physical and chemical properties, the REEs have diverse defense, energy, industrial, and military technology applications. The glass industry is the leading consumer of REE raw materials, which are used for glass polishing and as additives that provide color and special optical properties to the glass. Lanthanum-based catalysts are used in petroleum refining, and cerium-based catalysts are used in automotive catalytic converters. The use of REEs in magnets is a rapidly increasing application. Neodymium-iron-boron magnets, which are the strongest known type of magnets, are used when space and weight are restrictions. Nickel-metal hydride batteries use anodes made of a lanthanum-based alloys.China, which has led the world production of REEs for decades, accounted for more than 90 percent of global production and supply, on average, during the past decade. Citing a need to retain its limited REE resources to meet domestic requirements as well as concerns about the environmental effects of mining, China began placing restrictions on the supply of REEs in 2010 through the imposition of quotas, licenses, and taxes. As a result, the global rare-earth industry has increased its stockpiling of REEs; explored for deposits outside of China; and promoted new efforts to conserve, recycle, and substitute for REEs. New mine production began at Mount Weld in Western Australia, and numerous other exploration and development projects noted in this chapter are ongoing throughout the world.The REE-bearing minerals are

  19. Rack for nuclear fuel elements

    International Nuclear Information System (INIS)

    Rubinstein, H.J.; Gordon, C.B.; Robison, A.; Clark, P.M.

    1977-01-01

    Disclosed is a rack for storing spent nuclear fuel elements in which a plurality of aligned rows of upright enclosures of generally square cross-sectional areas contain vertically disposed spent fuel elements. Each fuel element is supported at the lower end thereof by a respective support that rests on the floor of the spent fuel pool for a nuclear power plant. An open rack frame is employed as an upright support for the enclosures containing the spent fuel elements. Legs at the lower corners of the frame rest on the floor of the pool to support the frame. In one exemplary embodiment, the support for the fuel element is in the form of a base on which a fuel element rests and the base is supported by legs. In another exemplary embodiment, each fuel element is supported on the pool floor by a self-adjusting support in the form of a base on which a fuel element rests and the base rests on a ball or swivel joint for self-alignment. The lower four corners of the frame are supported by legs adjustable in height for leveling the frame. Each adjustable frame leg is in the form of a base resting on the pool floor and the base supports a threaded post. The threaded post adjustably engages a threaded column on which rests the lower end of the frame. 16 claims, 14 figures

  20. Thermal insulation of fuel elements

    International Nuclear Information System (INIS)

    Dubrovcak, P.; Pec, V.; Pitonak, J.

    1978-01-01

    The claim of the invention concerns thermal insulation of fuel elements heated for measurement of uranium fuel physical properties. For this, layers of aluminium film and of glass fibre are wound onto the inner tube of the element cladding. The space between the inner and the outer tubes is evacuated and the tubes are spaced using spacer wires. (M.S.)

  1. On symmetric pyramidal finite elements

    Czech Academy of Sciences Publication Activity Database

    Liu, L.; Davies, K. B.; Yuan, K.; Křížek, Michal

    2004-01-01

    Roč. 11, 1-2 (2004), s. 213-227 ISSN 1492-8760 R&D Projects: GA AV ČR IAA1019201 Institutional research plan: CEZ:AV0Z1019905 Keywords : mesh generation * finite element method * composite elements Subject RIV: BA - General Mathematics Impact factor: 0.108, year: 2004

  2. Fluid element in SAP IV

    International Nuclear Information System (INIS)

    Yilmaz, C.; Akkas, N.

    1979-01-01

    In previous studies a fluid element is incorporated in the widely used general purpose finite element program SAPIV. This type of problem is of interest in the design of nuclear components involving geometric complexities and nonlinearities. The elasticity matrix of a general-purpose finite element program is modified in such a way that it becomes possible to idealize fluid as a structural finite element with zero shear modulus and a given bulk modules. Using the modified version of SAPIV, several solid-fluid interactions problems are solved. The numerical solutions are compared with the available analytical solutions. They are shown to be in reasonable aggrement. It is also shown that by solving an exterior-fluid interaction problem, the pressure wave propagation in the acoustic medium can be solved with the same approach. In this study, two of the problem not studied in the previous work will be presented. These problems are namely the effects of the link elements used at solid-fluid interfaces and of the concentrated loads on the response of the fluid medium. Truss elements are used as the link elements. After these investigations, it is decided that general purpose finite element programs with slight modifications can be used in the safety analysis of nuclear reactor plants. By this procedure it is possible to handle two-dimensional plane strain and tridimensional axisymmetric problems of this type. (orig.)

  3. Chemical experiments with superheavy elements.

    Science.gov (United States)

    Türler, Andreas

    2010-01-01

    Unnoticed by many chemists, the Periodic Table of the Elements has been extended significantly in the last couple of years and the 7th period has very recently been completed with eka-Rn (element 118) currently being the heaviest element whose synthesis has been reported. These 'superheavy' elements (also called transactinides with atomic number > or = 104 (Rf)) have been artificially synthesized in fusion reactions at accelerators in minute quantities of a few single atoms. In addition, all isotopes of the transactinide elements are radioactive and decay with rather short half-lives. Nevertheless, it has been possible in some cases to investigate experimentally chemical properties of transactinide elements and even synthesize simple compounds. The experimental investigation of superheavy elements is especially intriguing, since theoretical calculations predict significant deviations from periodic trends due to the influence of strong relativistic effects. In this contribution first experiments with hassium (Hs, atomic number 108), copernicium (Cn, atomic number 112) and element 114 (eka-Pb) are reviewed.

  4. Repetitive elements in parasitic protozoa

    Directory of Open Access Journals (Sweden)

    Clayton Christine

    2010-05-01

    Full Text Available Abstract A recent paper published in BMC Genomics suggests that retrotransposition may be active in the human gut parasite Entamoeba histolytica. This adds to our knowledge of the various types of repetitive elements in parasitic protists and the potential influence of such elements on pathogenicity. See research article http://www.biomedcentral.com/1471-2164/11/321

  5. Trace elements in human milk

    Energy Technology Data Exchange (ETDEWEB)

    Parr, R M [International Atomic Energy Agency, Vienna (Austria). Div. of Life Sciences

    1983-06-01

    Trace elements are those elements having a concentration lower than 10 ppm in body fluids or tissues. A total of 24 elements, both trace and minor elements, present in human milk have been analysed in this study, employing neutron activation analysis and absorption spectroscopy. The analyses have been carried out collaboratively by several different laboratories and the Agency which has also served as a coordinating centre. Although the evaluation of the results, altogether 8500 separate values, is still in progress, enough evidence is already available, however, to show some very interesting differences between different study areas and, in some cases, between different socio-economic groups within a single country. The main value of these data will probably be to throw new light on the nutritional requirements of young babies for trace elements.

  6. Massively Parallel Finite Element Programming

    KAUST Repository

    Heister, Timo

    2010-01-01

    Today\\'s large finite element simulations require parallel algorithms to scale on clusters with thousands or tens of thousands of processor cores. We present data structures and algorithms to take advantage of the power of high performance computers in generic finite element codes. Existing generic finite element libraries often restrict the parallelization to parallel linear algebra routines. This is a limiting factor when solving on more than a few hundreds of cores. We describe routines for distributed storage of all major components coupled with efficient, scalable algorithms. We give an overview of our effort to enable the modern and generic finite element library deal.II to take advantage of the power of large clusters. In particular, we describe the construction of a distributed mesh and develop algorithms to fully parallelize the finite element calculation. Numerical results demonstrate good scalability. © 2010 Springer-Verlag.

  7. Massively Parallel Finite Element Programming

    KAUST Repository

    Heister, Timo; Kronbichler, Martin; Bangerth, Wolfgang

    2010-01-01

    Today's large finite element simulations require parallel algorithms to scale on clusters with thousands or tens of thousands of processor cores. We present data structures and algorithms to take advantage of the power of high performance computers in generic finite element codes. Existing generic finite element libraries often restrict the parallelization to parallel linear algebra routines. This is a limiting factor when solving on more than a few hundreds of cores. We describe routines for distributed storage of all major components coupled with efficient, scalable algorithms. We give an overview of our effort to enable the modern and generic finite element library deal.II to take advantage of the power of large clusters. In particular, we describe the construction of a distributed mesh and develop algorithms to fully parallelize the finite element calculation. Numerical results demonstrate good scalability. © 2010 Springer-Verlag.

  8. Platinum-group elements

    Science.gov (United States)

    Zientek, Michael L.; Loferski, Patricia J.; Parks, Heather L.; Schulte, Ruth F.; Seal, Robert R.; Schulz, Klaus J.; DeYoung,, John H.; Seal, Robert R.; Bradley, Dwight C.

    2017-12-19

    The platinum-group elements (PGEs)—platinum, palladium, rhodium, ruthenium, iridium, and osmium—are metals that have similar physical and chemical properties and tend to occur together in nature. PGEs are indispensable to many industrial applications but are mined in only a few places. The availability and accessibility of PGEs could be disrupted by economic, environmental, political, and social events. The United States net import reliance as a percentage of apparent consumption is about 90 percent.PGEs have many industrial applications. They are used in catalytic converters to reduce carbon monoxide, hydrocarbon, and nitrous oxide emissions in automobile exhaust. The chemical industry requires platinum or platinum-rhodium alloys to manufacture nitric oxide, which is the raw material used to manufacture explosives, fertilizers, and nitric acid. In the petrochemical industry, platinum-supported catalysts are needed to refine crude oil and to produce aromatic compounds and high-octane gasoline. Alloys of PGEs are exceptionally hard and durable, making them the best known coating for industrial crucibles used in the manufacture of chemicals and synthetic materials. PGEs are used by the glass manufacturing industry in the production of fiberglass and flat-panel and liquid crystal displays. In the electronics industry, PGEs are used in computer hard disks, hybridized integrated circuits, and multilayer ceramic capacitors.Aside from their industrial applications, PGEs are used in such other fields as health, consumer goods, and finance. Platinum, for example, is used in medical implants, such as pacemakers, and PGEs are used in cancer-fighting drugs. Platinum alloys are an ideal choice for jewelry because of their white color, strength, and resistance to tarnish. Platinum, palladium, and rhodium in the form of coins and bars are also used as investment commodities, and various financial instruments based on the value of these PGEs are traded on major exchanges

  9. Chemistry of the heaviest elements

    International Nuclear Information System (INIS)

    Hoffman, D.C.

    1996-01-01

    Studies of the chemical properties of the elements at the uppermost end of the periodic table are discussed. Some historical perspective is given, but major emphasis is on recent studies. Isotopes of these elements are short-lived and, therefore, must be studied near the site of production. They must be produced with charged-particle beams at accelerators rather than via neutron capture. The use of radioactive heavy actinide targets is often required and the number of atoms produced is so small that any chemistry to be performed must be done on an ''atom-at-a-time'' basis. Furthermore, a knowledge of their nuclear properties is required in order to identify and detect them. To date, both gas and aqueous phase properties of elements as heavy as element 104 (rutherfordium) and element 105 (hahnium) have been investigated, even though their longest-lived known isotopes have half-lives of only 65 and 35 seconds, respectively. The experimental results show that their chemical properties cannot be simply extrapolated from the known properties of their lighter homologs in the periodic table, emphasizing the importance of obtaining additional experimental information for the heaviest elements to compare with predictions and help assess the influence of relativistic effects. The feasibility of the extension of chemical studies to still heavier elements is also discussed. (orig.)

  10. Hydrogen in CANDU fuel elements

    International Nuclear Information System (INIS)

    Sejnoha, R.; Manzer, A.M.; Surette, B.A.

    1995-01-01

    Unirradiated and irradiated CANDU fuel cladding was tested to compare the role of stress-corrosion cracking and of hydrogen in the development of fuel defects. The results of the tests are compared with information on fuel performance in-reactor. The role of hydriding (deuteriding) from the coolant and from the fuel element inside is discussed, and the control of 'hydrogen gas' content in the element is confirmed as essential for defect-free fuel performance. Finally, implications for fuel element design are discussed. (author)

  11. Origin of the chemical elements

    Energy Technology Data Exchange (ETDEWEB)

    Tayler, R J

    1984-05-01

    The subject is discussed in relation to the composition of initially created matter and changes which have occurred during the life history of the universe, with particular reference to our galaxy and nearby galaxies. Headings are: observations of element abundances (stars, gas clouds in our own and nearby galaxies, hot gas in galaxy clusters, the solar system); the originally created matter (Big Bang theory and early nuclear reactions); processes changing observed composition (galactic evolution; nuclear fusion reactions in stellar interiors; chemical composition of a highly evolved massive star); supernovae (production of heavy elements); chemical evolution of the galaxy; production of very heavy elements (s process, r process).

  12. Increased burnup of fuel elements

    International Nuclear Information System (INIS)

    Ahlf, J.

    1983-01-01

    The specialists' group for fuel elements of the Kerntechnische Gesellschaft e.V. held a meeting on ''Increased Burnup of Fuel Elements'' on 9th and 10th of November 1982 at the GKSS Research Center Geesthacht. Most papers dealt with the problems of burnup increase of fuel elements for light water reactors with respect to fuel manufacturing, power plant operation and reprocessing. Review papers were given on the burnup limits for high temperature gas cooled reactors and sodium fast breeder reactors. The meeting ended with a presentation of the technical equipment of the hot laboratory of the GKSS and the programs which are in progress there. (orig.) [de

  13. Avaliação de diferentes fontes e teores de proteína na dieta sobre o desempenho, fermentação ruminal e parâmetros sangüíneos de vacas da raça Holandesa em final de lactação Evaluation of different protein sources and content on rumen fermentation and blood parameters performance of holstein cows’ lactation

    Directory of Open Access Journals (Sweden)

    Éberson Castilho Barnabé

    2002-04-01

    Full Text Available Foram utilizadas 4 vacas da raça Holandesa em um delineamento em Quadrado Latino 4x4, com o objetivo de avaliar dietas com diferentes teores protéicos provenientes de farelo de soja (FS ou uréia (U, sobre o desempenho lactacional, parâmetros ruminais e sangüíneos. Os tratamentos utilizados foram: (A FS, com 10,05% de PB na dieta; (B U, com 10,05% de PB na dieta; (C FS+U, com 13,70% de PB na dieta; e (D FS, com 13,70% de PB na dieta. O consumo e eficiência alimentar, produção de leite, teores e produções de proteína e sólidos totais não foram afetados (P > 0,05 pelos tratamentos. A utilização de uréia como fonte exclusiva de proteína aumentou (P 0,05. O aumento no teor de proteína bruta resultou em aumento (P Four lactating Holstein cows were used in a 4x4 Latin Square design to evaluate the effects of levels (10.5% vs. 13.7% and sources (soybean meal - SBM vs. urea - U of protein on lactation performance, rumen fermentation and blood parameters. The treatments were: (A 10.05% CP diet - SBM; (B 10.05% CP diet - U; (C 13.70% CP diet - SBM+U; (D 13.70% CP diet - SBM. Dry matter intake, feed efficiency, milk production, milk protein content and yield were not affected (p > 0.05 by treatments. Milk fat content increased (p < 0.05 with 10.05% CP - U diet (treatment B. The increase of dietary crude protein content increased (p < 0.05 ruminal ammonia N, PUN, total VFA and decreased (p < 0.05 ruminal acetate.

  14. Elemental balance in soy sauce

    International Nuclear Information System (INIS)

    Haruyama, Yoichi; Saito, Manabu; Yoshida, Koji.

    1996-01-01

    We have measured the elemental concentrations of soy sauce and its actual raw materials which are used in a certain soy sauce factory. In the present measurement, we measured de-fatted soybean, wheat and salt as raw materials and soy sauce and soy sauce waste as final products. Five kinds of elements, such as Mn, Fe, Cu, Zn and Br, were detected. We obtained elemental concentrations of them except for Mn in each materials. The measured elemental concentration in soy sauce agreed well each other with the calculated one within the experimental errors using the measured concentration in the raw materials and their weight in actual producing process. Contrary to our expectation, it was found that wheat contributes to soy sauce bromine concentration dominantly in the present case. (author)

  15. Elements of Tiny Plasma Spectrometers

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose to advance major elements of a miniaturized plasma spectrometer for flight on future missions. This type of instrument has been developed and successfully...

  16. Finite element computational fluid mechanics

    International Nuclear Information System (INIS)

    Baker, A.J.

    1983-01-01

    This book analyzes finite element theory as applied to computational fluid mechanics. It includes a chapter on using the heat conduction equation to expose the essence of finite element theory, including higher-order accuracy and convergence in a common knowledge framework. Another chapter generalizes the algorithm to extend application to the nonlinearity of the Navier-Stokes equations. Other chapters are concerned with the analysis of a specific fluids mechanics problem class, including theory and applications. Some of the topics covered include finite element theory for linear mechanics; potential flow; weighted residuals/galerkin finite element theory; inviscid and convection dominated flows; boundary layers; parabolic three-dimensional flows; and viscous and rotational flows

  17. Nuclear reactor fuel element assemblies

    International Nuclear Information System (INIS)

    Krawiec, D.M.; Bevilacqua, F.

    1974-01-01

    The fuel elements of each fuel element group are separated from each other by means of a multitude of thin, intersecting plates in the from of grid strips. Flow deflectors near the surface of the fuel elements are used in order to make the coolant flow more turbulent. They are designed as vanes and arranged at a distance on the grid strips. Each deflector vane has two arms stretching in opposite directions, each one into a neighbouring channel. In outward direction, the deflector vanes are converging. The strips with the vanes can be put on the supporting grid of the fuel elements. The vane structure can be reinforced by providing distortions in the strip material near the vanes. (DG) [de

  18. Elemental ABAREX -- a user's manual

    International Nuclear Information System (INIS)

    Smith, A.B.

    1999-01-01

    ELEMENTAL ABAREX is an extended version of the spherical optical-statistical model code ABAREX, designed for the interpretation of neutron interactions with elemental targets consisting of up to ten isotopes. The contributions from each of the isotopes of the element are explicitly dealt with, and combined for comparison with the elemental observables. Calculations and statistical fitting of experimental data are considered. The code is written in FORTRAN-77 and arranged for use on the IBM-compatible personal computer (PC), but it should operate effectively on a number of other systems, particularly VAX/VMS and IBM work stations. Effort is taken to make the code user friendly. With this document a reasonably skilled individual should become fluent with the use of the code in a brief period of time

  19. The evolution of the elements

    International Nuclear Information System (INIS)

    Williams, P.M.

    1978-01-01

    It is believed that only the lightest elements, hydrogen and helium, were created during the 'Big Bang' origin of the Universe and that all heavier elements were synthesized by nuclear reactions in stars, the interstellar medium and possibly in 'little bangs' in the nuclei of galaxies. The composition of the interstellar medium has evolved through enrichment by processed material shed by evolving stars and the composition of the Solar System reflects that of the interstellar medium at the time of its formation. Differentiation processes during the evolution of the Solar System and individual planets account for the different compositions of the Sun and the planets. The measurement of the abundance distribution of the elements has become a very powerful tool in the elucidation of the evolution of the Solar System, stars and the Galaxy. This review attempts to trace the formation of the elements in stars and their subsequent evolution. (author)

  20. Environmental research on actinide elements

    International Nuclear Information System (INIS)

    Pinder, J.E. III; Alberts, J.J.; McLeod, K.W.; Schreckhise, R.G.

    1987-08-01

    The papers synthesize the results of research sponsored by DOE's Office of Health and Environmental Research on the behavior of transuranic and actinide elements in the environment. Separate abstracts have been prepared for the 21 individual papers

  1. Electromagnetic matrix elements in baryons

    International Nuclear Information System (INIS)

    Lipkin, H.J.; Moinester, M.A.

    1992-01-01

    Some simple symmetry relations between matrix elements of electromagnetic operators are investigated. The implications are discussed for experiments to study hyperon radiative transitions and polarizabilities and form factors. (orig.)

  2. Programming the finite element method

    CERN Document Server

    Smith, I M; Margetts, L

    2013-01-01

    Many students, engineers, scientists and researchers have benefited from the practical, programming-oriented style of the previous editions of Programming the Finite Element Method, learning how to develop computer programs to solve specific engineering problems using the finite element method. This new fifth edition offers timely revisions that include programs and subroutine libraries fully updated to Fortran 2003, which are freely available online, and provides updated material on advances in parallel computing, thermal stress analysis, plasticity return algorithms, convection boundary c

  3. Pipeline robots with elastic elements

    Directory of Open Access Journals (Sweden)

    A. Matuliauskas

    2002-10-01

    Full Text Available In the article constructions of the pipeline robots with elastic elements are reviewed and the scheme of new original construction is presented. The mathematical models of a robot with one-dimensional vibration exciter with two degrees of freedom were developed and the equations of movement were formed and written. The mathematical model of the pipeline robot with circular elements is formed and its motion equations are presented.

  4. ELEMENTS OF SAFETY IN PARAGLIDING

    OpenAIRE

    Janez Mekinc; Katarina Mušič

    2016-01-01

    Paragliding is an opportunity for tourism development, depending on what position the sport has place in the local community, the restrictions for paragliders and the safety components of the region. The paper explores the phenomenon of paragliding and safety elements in the Upper Soča region, one of ten best paragliding sites in the world (Placestoseeinyourlifetime, 2015). The purpose of the research is to analyse the safety elements, the development and the risk of paragliding.The goals of ...

  5. Fuel element box inspection device

    International Nuclear Information System (INIS)

    Ortmayer, R.M.; Pick, W.

    1985-01-01

    The invention concerns a device for inspecting the outer geometry of a long fuel element box by measuring the surface contours over its longitudinal crossection and along its length by sensors. These are kept in a sledge which can be moved along the fuel element guide in a slot guide. The measurement signals reach an evaluation device outside the longitudinal box. (orig./HP) [de

  6. Nuclear fuel elements and assemblies

    International Nuclear Information System (INIS)

    Saito, Shozo; Maki, Hideo.

    1982-01-01

    Purpose: To facilitate the attainment of the uranium enrichment or gadolinia enrichment of a pellet filled in a fuel element. Constitution: The axial length of a pellet filled in a fuel element is set to predetermined sizes according to the uranium enrichment factor, gadolinia enrichment or their combination. Thus, the uranium enrichment factor or gadolinia enrichment can be identified by attaining the axial length of the pellet by using such a pellt. (Kamimura, M.)

  7. Nuclear reactor fuel element splitter

    International Nuclear Information System (INIS)

    Yeo, D.

    1976-01-01

    A method and apparatus are disclosed for removing nuclear fuel from a clad fuel element. The fuel element is power driven past laser beams which simultaneously cut the cladding lengthwise into at least two longitudinal pieces. The axially cut lengths of cladding are then separated, causing the nuclear fuel contained therein to drop into a receptacle for later disposition. The cut lengths of cladding comprise nuclear waste which is disposed of in a suitable manner. 6 claims, 10 drawing figures

  8. Phase diagrams of the elements

    International Nuclear Information System (INIS)

    Young, D.A.

    1975-01-01

    A summary of the pressure-temperature phase diagrams of the elements is presented, with graphs of the experimentally determined solid-solid phase boundaries and melting curves. Comments, including theoretical discussion, are provided for each diagram. The crystal structure of each solid phase is identified and discussed. This work is aimed at encouraging further experimental and theoretical research on phase transitions in the elements

  9. Nuclear chemistry of transactinide elements

    Energy Technology Data Exchange (ETDEWEB)

    Nagame, Yuichiro [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1997-07-01

    The current status on the nuclear chemistry studies of transactinide elements is reviewed. The production of transactinides in heavy ion reactions is briefly discussed, and nuclear properties on the stability of transactinides are presented. Chemical properties of the trans-actinide elements 104, 105 and 106, and a typical experimental technique used to study these properties on an atom-at-a-time base are introduced. (author)

  10. The pulmonary vascular blood supply in the pulmonary atresia with ventricular septal defect and its implications in surgical treatment O suprimento sangüíneo vascular pulmonar na atresia pulmonar com comunicação interventricular e suas implicações no tratamento cirúrgico

    Directory of Open Access Journals (Sweden)

    Ulisses Alexandre Croti

    2003-10-01

    Full Text Available OBJECTIVE: With base in the studies cineangiocardiography of pacients with pulmonary atresia (PA with ventricular septal defect (VSD, to identify in the groups proposed by BARBERO MARCIAL, subgroups with similar morphological characteristics, to measure their central pulmonary arteries (CPA and major aortopulmonary collateral arteries (MAPCA, thereby establishing their implications in surgical treatment. METHOD: Sixty three patients were classified in groups A (15, B (40 and C (8 between january 1990 and june 2001. Patients with complete cineangiocardiograms prior to the first surgical intervention were included in this study, being calculated the pulmonary arterial index (PAI, the major aortopulmonary collateral arterial index (MAPCAI and the total neopulmonary arterial index (TNPAI = PAI + MAPCAI. Surgical treatment was considered palliative (PT, definitively palliative (DPT and definitive (DT. RESULTS: Nine subgroups were identified, A (A1 and A2, B (B1, B2, B3, B4 and B5 and C (C1 and C2. In group A, the PAI of patients for DT was higher than for PT patients (p=0,0092. In group B, the TNPAI of DT patients was greater than for PT patients (p=0,0959. In group C, the MAPCAI in DPT patients was lower than in PT and DT patients. In the group A was not mortality, in the group B was of 17,5% and in the group C was of 12,5%. CONCLUSIONS:Among the groups A, B e C was possible to identifiy nine subgroups, the morphologic and morphometric characteristics allowed to suggest the surgical treatment in the patients of the group A had larger chance of TD, the group B of TP and the group C of TPD. The mortality presented larger correlation with the morphologic characteristics that with the morphometric.OBJETIVO: Com base nos estudos cineangiocardiográficos de pacientes portadores de atresia pulmonar (AP com comunicação interventricular (CIV, identificar nos grupos propostos pela classificação de BARBERO MARCIAL, subgrupos com suprimento sang

  11. Hábito alimentar, níveis de lipídios sangüíneos e o status antioxidante de adultos jovens fumantes e não fumantes Food habits, blood lipid levels and antioxidant status of young adults smokers and non-smokers

    Directory of Open Access Journals (Sweden)

    Ellencristina da Silva Batista

    2009-06-01

    Full Text Available OBJETIVO: Avaliar o hábito alimentar, os níveis dos lipídios sangüíneos e o status antioxidante de jovens fumantes e não fumantes. MÉTODOS: Trata-se de um estudo transversal em que 68 indivíduos, de 18 a 26 anos, emparelhados por sexo e idade, foram divididos em dois grupos: fumantes (n=34 e não fumantes (n=34. Os voluntários selecionados em instituições de ensino, em Viçosa (MG foram questionados quanto a: hábito de fumar, consumo de bebidas alcoólicas e atividade física; também foi estimada a dependência nicotínica. O hábito alimentar foi avaliado por questionário de freqüência de consumo. Quantificaram-se níveis séricos de lipídios, nível plasmático de malondialdeído, vitamina E e vitamina C. RESULTADOS: Os jovens começaram a fumar precocemente, independentemente do sexo. O hábito de fumar foi estratificado e encontrou-se 58,8% de fumantes leves e 41,2% de fumantes pesados. Os fumantes apresentaram hábitos alimentares inadequados e consumo freqüente de bebida alcoólica. De acordo com a recomendação do International Physical Activity Questionnaire 69% dos fumantes eram ativos e 27,6% eram muito ativos. Não se observou diferença significante na concentração sérica de lipídios entre fumantes e não fumantes. No grupo de fumantes mulheres, verificou-se correlação positiva entre o número de cigarros fumados por dia e os triglicerídeos séricos (r=0,824 e p=0,0001 e também entre o tempo que fumavam em anos e o nível de colesterol total (r=0,523 e p=0,031. Os fumantes apresentaram concentração inferior de vitaminas E e C (p=0,002 e p=OBJECTIVE: The objective was to evaluate the food habits, blood lipid levels and antioxidant status of young adult smokers and non smokers. METHODS: This cross-sectional study divided 68 individuals aged 18 to 26 years, matched for age and sex, into two groups: smokers (n=34 and non-smokers (n=34. The individuals, selected from schools in Viçosa (MG, were asked about

  12. Chemistry of the transactinide elements

    International Nuclear Information System (INIS)

    Schaedel, M.

    1995-01-01

    The experimentally known chemical properties of the transactinide elements 104 and 105, and the experimental techniques used to study these properties on an atom-at-a-time base, are reviewed. The production of transactinides in heavy ion reactions and the specific aspects of chemical separations with single atoms is briefly discussed. The chemical properties of the first two transactinide elements are compared with the lighter element homologs in group 4 and 5 of the Periodic Table and with the expected behaviour obtained from most recent atomic and molecular calculations which take the increasingly strong relativistic effect into account. Elements 104 and 105 behave as transactinide elements and, in general, exhibit properties characteristic of their position in group 4 and 5 of the Periodic Table. However, surprising deviations of the chemical properties from expectations based on simple extrapolations have been observed. It is shown that the chemical properties of the heaviest elements cannot reliably be predicted by simple extrapolations. Prospects to extend our chemical knowledge at the top end of the Periodic Table are discussed. (orig.)

  13. New elements - approaching Z=114

    International Nuclear Information System (INIS)

    Hofmann, S.

    1998-03-01

    The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions using 1n-deexcitation channels and lead or bismuth targets. The isotopes were unambiguously identified by means of α-α correlations. Not fission, but alpha decay is the dominant decay mode. The collected decay data establish a means of comparison with theoretical data. This aids in the selection of appropriate models that describe the properties of known nuclei. Predictions based on these models are useful in the preparation of the next generation of experiments. Cross-sections decrease by two orders of magnitude from bohrium (Z=107) to element 112, for which a cross-section of 1 pb was measured. The development of intense beam currents and sensitive detection methods is essential for the production and identification of still heavier elements and new isotopes of already known elements, as well as the measurement of small α-, β- and fission-branching ratios. An equally sensitive set-up is needed for the measurement of excitation functions at low cross-sections. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical super heavy elements (SHE) could be achieved by fusion reactions using 208 Pb targets. Systematic studies of the reaction cross-sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHE using 1n-emission channels. (orig.)

  14. Finite element modeling of piezoelectric elements with complex electrode configuration

    International Nuclear Information System (INIS)

    Paradies, R; Schläpfer, B

    2009-01-01

    It is well known that the material properties of piezoelectric materials strongly depend on the state of polarization of the individual element. While an unpolarized material exhibits mechanically isotropic material properties in the absence of global piezoelectric capabilities, the piezoelectric material properties become transversally isotropic with respect to the polarization direction after polarization. Therefore, for evaluating piezoelectric elements the material properties, including the coupling between the mechanical and the electromechanical behavior, should be addressed correctly. This is of special importance for the micromechanical description of piezoelectric elements with interdigitated electrodes (IDEs). The best known representatives of this group are active fiber composites (AFCs), macro fiber composites (MFCs) and the radial field diaphragm (RFD), respectively. While the material properties are available for a piezoelectric wafer with a homogeneous polarization perpendicular to its plane as postulated in the so-called uniform field model (UFM), the same information is missing for piezoelectric elements with more complex electrode configurations like the above-mentioned ones with IDEs. This is due to the inhomogeneous field distribution which does not automatically allow for the correct assignment of the material, i.e. orientation and property. A variation of the material orientation as well as the material properties can be accomplished by including the polarization process of the piezoelectric transducer in the finite element (FE) simulation prior to the actual load case to be investigated. A corresponding procedure is presented which automatically assigns the piezoelectric material properties, e.g. elasticity matrix, permittivity, and charge vector, for finite element models (FEMs) describing piezoelectric transducers according to the electric field distribution (field orientation and strength) in the structure. A corresponding code has been

  15. Brain trace elements and aging

    International Nuclear Information System (INIS)

    Hebbrecht, Geert; Maenhaut, Willy; Reuck, Jacques de

    1999-01-01

    Degenerative mechanisms involved in the aging process of the brain are to a certain extent counteracted by repair mechanisms. In both degenerative and recovery processes, trace elements are involved. The present study focused on the role of two minor (i.e., K and Ca) and six trace elements (i.e., Mn, Fe, Cu, Zn, Se and Rb) in the aging process. The elements were determined by PIXE in cerebral cortex and white matter, basal ganglia, brainstem and cerebellar cortex of 18 postmortem human brains, from persons without a history of neurologic or psychiatric disease who deceased between the age of 7 and 79. This age range allowed us to study the relationship between elemental concentrations and age. The most prominent findings were a concentration decrease for K and Rb and a concentration increase for the elements Ca, Fe, Zn and Se. The study supports recent findings that Ca and Fe are involved in brain degenerative processes initiated by oxygen free radicals, whereas Zn and Se are involved in immunological reactions counteracting the aging process

  16. Fuel element tomography by gammametry

    International Nuclear Information System (INIS)

    Simonet, G.; Pineira, T.

    1982-03-01

    As from transversal gamma determinations of a cylindrical fuel element, the TOMOGAM program reconstitutes the distribution of fission products in a section. This direct, fast and non destructive method, makes it possible to have access to the behaviour of the fuel at any time: - the soluble fission products in the matrix represent the fuel itself and the distribution of the fissions, - the migrating elements inform on the temperature reached in accordance with the permitted powers, - the volatile nuclides build up in particular points where physical-chemical phenomena of fuel-cladding interaction are liable to corrode the latter. Hence, gamma spectrometry extends its possibilities of analysis relative to the performance of reactor elements [fr

  17. Physical model of Nernst element

    International Nuclear Information System (INIS)

    Nakamura, Hiroaki; Ikeda, Kazuaki; Yamaguchi, Satarou

    1998-08-01

    Generation of electric power by the Nernst effect is a new application of a semiconductor. A key point of this proposal is to find materials with a high thermomagnetic figure-of-merit, which are called Nernst elements. In order to find candidates of the Nernst element, a physical model to describe its transport phenomena is needed. As the first model, we began with a parabolic two-band model in classical statistics. According to this model, we selected InSb as candidates of the Nernst element and measured their transport coefficients in magnetic fields up to 4 Tesla within a temperature region from 270 K to 330 K. In this region, we calculated transport coefficients numerically by our physical model. For InSb, experimental data are coincident with theoretical values in strong magnetic field. (author)

  18. [Trace elements of bone tumors].

    Science.gov (United States)

    Kalashnikov, V M; Zaĭchik, V E; Bizer, V A

    1983-01-01

    Due to activation analysis involving the use of neutrons from a nuclear reactor, the concentrations of 11 trace elements: scandium, iron, cobalt, mercury, rubidium, selenium, silver, antimony, chrome, zinc and terbium in intact bone and skeletal tumors were measured. 76 specimens of bioptates and resected material of operations for bone tumors and 10 specimens of normal bone tissue obtained in autopsies of cases of sudden death were examined. The concentrations of trace elements and their dispersion patterns in tumor tissue were found to be significantly higher than those in normal bone tissue. Also, the concentrations of some trace elements in tumor differed significantly from those in normal tissue; moreover, they were found to depend on the type and histogenesis of the neoplasm.

  19. Marine oligotrophy and element biogeochemistry

    International Nuclear Information System (INIS)

    Jeffree, R.A.; Szymczak, R.

    1999-01-01

    A biogeochemical model has been developed that explains the inverse and non-linear relationship between Po-210 concentration in zooplankton and their biomass, under oligotrophic conditions in French Polynesia. This study identified other elements with comparable accumulatory behaviours to Po-210 in phytoplankton, seston and zooplankton, that are proposed to be critical to its enhanced environmental levels under oligotrophy. Field investigation in the Gulf of Papua showed that four of these a priori identified elements viz Cd, Co, Pb and Mn, as well as Cr and Ni, showed elevated water concentrations with reduced biological productivity, results that are consistent with those previously obtained for Po-210 and the proposed explanatory model. These findings point to the enhanced susceptibility of oligotrophic systems to contamination from particle-reactive elements. (author)

  20. FINITE ELEMENT ANALYSIS OF ELEMENT ANALYSIS OF A FREE ...

    African Journals Online (AJOL)

    eobe

    the stairs and to compare the finite element ana ... tual three dimensional behavior of the stair slab system. ..... due to its close relation of output with the propo .... flights. It is best not to consider any open well when .... thermodynamics of solids.

  1. Organic chemistry of elemental phosphorus

    International Nuclear Information System (INIS)

    Milyukov, V A; Budnikova, Yulia H; Sinyashin, Oleg G

    2005-01-01

    The principal achievements and the modern trends in the development of the chemistry of elemental phosphorus are analysed, described systematically and generalised. The possibilities and advantages of the preparation of organophosphorus compounds directly from white phosphorus are demonstrated. Attention is focused on the activation and transformation of elemental phosphorus in the coordination sphere of transition metal complexes. The mechanisms of the reactions of white phosphorus with nucleophilic and electrophilic reagents are discussed. Electrochemical approaches to the synthesis of organic phosphorus derivatives based on white phosphorus are considered.

  2. Status of transuranium element production

    International Nuclear Information System (INIS)

    King, L.J.

    1985-01-01

    The Transuranium Processing Plant at Oak Ridge National Laboratory has been the production, storage, and distribution center for the heavy-element research program of the US Department of Energy since 1966. During the past four years, annual production rates of transcurium elements have been relatively stable, averaging 34 mg of 249 Bk, 369 mg of 252 Cf, 1.4 mg of 253 Es, and 0.7 pg of 257 Fm. The extensive provisions for changing and modifying equipment have allowed continual updating of the plant to include new concepts in chemical processes and equipment design. 21 refs., 4 figs., 2 tabs

  3. Transposable elements and circular DNAs

    KAUST Repository

    Mourier, Tobias

    2016-09-26

    Circular DNAs are extra-chromosomal fragments that become circularized by genomic recombination events. We have recently shown that yeast LTR elements generate circular DNAs through recombination events between their flanking long terminal repeats (LTRs). Similarly, circular DNAs can be generated by recombination between LTRs residing at different genomic loci, in which case the circular DNA will contain the intervening sequence. In yeast, this can result in gene copy number variations when circles contain genes and origins of replication. Here, I speculate on the potential and implications of circular DNAs generated through recombination between human transposable elements.

  4. Elements to diminish radioactive accidents

    International Nuclear Information System (INIS)

    Cortes I, M.E.; Ramirez G, F.P.

    1998-01-01

    In this work it is presented an application of the cause-effect diagram method or Ichikawa method identifying the elements that allow to diminish accidents when the radioactive materials are transported. It is considered the transport of hazardous materials which include radioactive materials in the period: December 1996 until March 1997. Among the identified elements by this method it is possible to mention: the road type, the radioactive source protection, the grade driver responsibility and the preparation that the OEP has in the radioactive material management. It is showed the differences found between the country inner roads and the Mexico City area. (Author)

  5. Quality assurance of fuel elements

    International Nuclear Information System (INIS)

    Hoerber, J.

    1980-01-01

    The quality assurance activities for reactor fuel elements are based on a quality assurance system which implies the requirements resulting from the specifications, regulations of the authorities, national standards and international rules and regulations. The quality assurance related to production of reactor fuel will be shown for PWR fuel elements in all typical fabrication steps as conversion into UO 2 -powder, pelletizing, rodmanufacture and assembling. A wide range of destructive and nondestructive techniques is applied. Quality assurance is not only verified by testing techniques but also by process monitoring by means of parameter control in production and testing procedures. (RW)

  6. Elements of spatial data quality

    CERN Document Server

    Guptill, SC

    1995-01-01

    Elements of Spatial Data Quality outlines the need and suggests potential categories for the content of a comprehensive statement of data quality that must be imbedded in the metadata that accompanies the transfer of a digital spatial data file or is available in a separate metadata catalog. Members of the International Cartographic Association's Commission on Spatial Data Quality have identified seven elements of data quality: positional accuracy, attribute accuracy, completeness, logical consistency, lineage, semantic accuracy and temporal information. In the book the authors describe: compo

  7. Chemistry of the heaviest elements

    International Nuclear Information System (INIS)

    Schaedel, M.

    1992-08-01

    The experimentally known chemical properties of elements 103,104, and 105, and the experimental techniques to obtain these properties on a one-atom- at-a-time base, are summarized. The chemical properties are compared with the lighter group 3,4 and 5 homologs and with the expected behaviour as obtained from theoretical calculations. In this transition region from the last actinide element to the beginning of the transactinide series one may expect to find evidence for increasingly strong relativistic effects altering the chemical behaviour. (orig.)

  8. FINITE ELEMENT ANALYSIS OF STRUCTURES

    Directory of Open Access Journals (Sweden)

    PECINGINA OLIMPIA-MIOARA

    2015-05-01

    Full Text Available The application of finite element method is analytical when solutions can not be applied for deeper study analyzes static, dynamic or other types of requirements in different points of the structures .In practice it is necessary to know the behavior of the structure or certain parts components of the machine under the influence of certain factors static and dynamic . The application of finite element in the optimization of components leads to economic growth , to increase reliability and durability organs studied, thus the machine itself.

  9. Transposable elements and circular DNAs

    KAUST Repository

    Mourier, Tobias

    2016-01-01

    Circular DNAs are extra-chromosomal fragments that become circularized by genomic recombination events. We have recently shown that yeast LTR elements generate circular DNAs through recombination events between their flanking long terminal repeats (LTRs). Similarly, circular DNAs can be generated by recombination between LTRs residing at different genomic loci, in which case the circular DNA will contain the intervening sequence. In yeast, this can result in gene copy number variations when circles contain genes and origins of replication. Here, I speculate on the potential and implications of circular DNAs generated through recombination between human transposable elements.

  10. Trace elements in human pituitary

    International Nuclear Information System (INIS)

    Kanabrocki, E.L.; Greco, J.; Graham, L.A.; Kaplan, E.; Rubnitz, M.E.; Oester, Y.T.; Brar, S.; Gustafson, P.S.; Nelson, D.M.; Molinari, F.; Moore, C.E.; Kanabrocki, J.A.

    1976-01-01

    Neutron activation analysis was used to determine several trace elements in human pituitaries from adult subjects aged 42 to 83 years who had died of ischemic heart disease, carcinoma and cirrhosis of the liver. None of these subjects suffered from mental disease. The concentrations of Fe, Zn, Rb, Se, Br, Cr, Hg, Cs and Co in dried tissue showed no correlation with the diseases, and the results may therefore be representative of the general population. These elements may play a very fundamental role in pituitary function. (U.K.)

  11. Nuclear fuel element end fitting

    International Nuclear Information System (INIS)

    Jabsen, F.S.

    1979-01-01

    A typical embodiment of the invention has an array of sockets that are welded to the intersections of the plates that form the upper and lower end fittings of a nuclear reactor fuel element. The sockets, which are generally cylindrical in shape, are oriented in directions that enable the longitudinal axes of the sockets to align with the longitudinal axes of the fuel rods that are received in the respective sockets. Detents impressed in the surfaces of the sockets engage mating grooves that are formed in the ends of the fuel rods to provide for the structural integrity of the fuel element

  12. Finite elements of nonlinear continua

    CERN Document Server

    Oden, John Tinsley

    1972-01-01

    Geared toward undergraduate and graduate students, this text extends applications of the finite element method from linear problems in elastic structures to a broad class of practical, nonlinear problems in continuum mechanics. It treats both theory and applications from a general and unifying point of view.The text reviews the thermomechanical principles of continuous media and the properties of the finite element method, and then brings them together to produce discrete physical models of nonlinear continua. The mathematical properties of these models are analyzed, along with the numerical s

  13. Mixed Element Formulation for the Finite Element-Boundary Integral Method

    National Research Council Canada - National Science Library

    Meese, J; Kempel, L. C; Schneider, S. W

    2006-01-01

    A mixed element approach using right hexahedral elements and right prism elements for the finite element-boundary integral method is presented and discussed for the study of planar cavity-backed antennas...

  14. Nuclear fuel elements design, fabrication and performance

    CERN Document Server

    Frost, Brian R T

    1982-01-01

    Nuclear Fuel Elements: Design, Fabrication and Performance is concerned with the design, fabrication, and performance of nuclear fuel elements, with emphasis on fast reactor fuel elements. Topics range from fuel types and the irradiation behavior of fuels to cladding and duct materials, fuel element design and modeling, fuel element performance testing and qualification, and the performance of water reactor fuels. Fast reactor fuel elements, research and test reactor fuel elements, and unconventional fuel elements are also covered. This volume consists of 12 chapters and begins with an overvie

  15. Environmental research on actinide elements

    Energy Technology Data Exchange (ETDEWEB)

    Pinder, J.E. III; Alberts, J.J.; McLeod, K.W.; Schreckhise, R.G. (eds.)

    1987-08-01

    The papers synthesize the results of research sponsored by DOE's Office of Health and Environmental Research on the behavior of transuranic and actinide elements in the environment. Separate abstracts have been prepared for the 21 individual papers. (ACR)

  16. Extrachromosomal genetic elements in Micrococcus.

    Science.gov (United States)

    Dib, Julián Rafael; Liebl, Wolfgang; Wagenknecht, Martin; Farías, María Eugenia; Meinhardt, Friedhelm

    2013-01-01

    Micrococci are Gram-positive G + C-rich, nonmotile, nonspore-forming actinomycetous bacteria. Micrococcus comprises ten members, with Micrococcus luteus being the type species. Representatives of the genus play important roles in the biodegradation of xenobiotics, bioremediation processes, production of biotechnologically important enzymes or bioactive compounds, as test strains in biological assays for lysozyme and antibiotics, and as infective agents in immunocompromised humans. The first description of plasmids dates back approximately 28 years, when several extrachromosomal elements ranging in size from 1.5 to 30.2 kb were found in Micrococcus luteus. Up to the present, a number of circular plasmids conferring antibiotic resistance, the ability to degrade aromatic compounds, and osmotolerance are known, as well as cryptic elements with unidentified functions. Here, we review the Micrococcus extrachromosomal traits reported thus far including phages and the only quite recently described large linear extrachromosomal genetic elements, termed linear plasmids, which range in size from 75 kb (pJD12) to 110 kb (pLMA1) and which confer putative advantageous capabilities, such as antibiotic or heavy metal resistances (inferred from sequence analyses and curing experiments). The role of the extrachromosomal elements for the frequently proven ecological and biotechnological versatility of the genus will be addressed as well as their potential for the development and use as genetic tools.

  17. Trace elements in brazilian soils

    International Nuclear Information System (INIS)

    Rocha, Geraldo Cesar

    1995-01-01

    A literature revision on trace elements (Zn, B, Mn, Mo, Cu, Fe, and Cl) in Brazilian soils was prepared, with special attention to the chemical form and range in the soil, extraction methods and correlation of the amount in soils with soil properties

  18. Fuel element database: developer handbook

    International Nuclear Information System (INIS)

    Dragicevic, M.

    2004-09-01

    The fuel elements database which was developed for Atomic Institute of the Austrian Universities is described. The software uses standards like HTML, PHP and SQL. For the standard installation freely available software packages such as MySQL database or the PHP interpreter from Apache Software Foundation and Java Script were used. (nevyjel)

  19. FOIL ELEMENT FOR NUCLEAR REACTOR

    Science.gov (United States)

    Noland, R.A.; Walker, D.E.; Spinrad, B.I.

    1963-07-16

    A method of making a foil-type fuel element is described. A foil of fuel metal is perforated in; regular design and sheets of cladding metal are placed on both sides. The cladding metal sheets are then spot-welded to each other through the perforations, and the edges sealed. (AEC)

  20. Experimental search for superheavy elements

    International Nuclear Information System (INIS)

    Wieloch, A.

    2008-12-01

    This work reports on the experimental search for superheavy elements (SHE). Two types of approaches for SHE production are studied i.e. '' cold '' fusion mechanism and massive transfer mechanism. First mechanism was studied in normal and inverse kinematics, by using Wien filter at the GANIL facility. The production of SHE elements with Z 106 and 108 is reported while negative results on the synthesis of SHE elements with Z 114 and 118 was received. The other approach i.e. reactions induced by heavy ion projectiles (e.g. 172 Yb, 197 Au) on fissile target nuclei (e.g. 238 U, 232 Th) at near Coulomb barrier incident energies was studied by using superconducting solenoid installed Texas A(and)M University. Preliminary results for the reaction 197 Au(7.5 MeV/u) - 232 Th are presented where three cases of the possible candidates for SHE elements were found. A dedicated detection setup for such studies is discussed and the detailed data analysis is presented. Detection of alpha and spontaneous fission radioactive decays is used to unambiguously identify the atomic number of SHE. Special statistical analysis for a very low detected number of α decays is applied to check consistency of the αradioactive chains. (author)

  1. Automatic welding of fuel elements

    International Nuclear Information System (INIS)

    Briola, J.

    1958-01-01

    The welding process depends on the type of fuel element, the can material and the number of cartridges to be welded: - inert-gas welding (used for G2 and the 1. set of EL3), - inert atmosphere arc welding (used for welding uranium and zirconium), - electronic welding (used for the 2. set of EL3 and the tank of Proserpine). (author) [fr

  2. Treatment of incorporated transuranium elements

    International Nuclear Information System (INIS)

    Volf, V.

    1978-01-01

    The text of this report and its tables and figures provide basic information on the decorporation of transuranium elements as well as an insight into the more general principles, trends and interactions. The detailed tables and the exhaustive list of important references should enable the reader to make his own conclusions in a minimum of time

  3. Pyrochemical properties of actinides elements

    International Nuclear Information System (INIS)

    Akabori, Mitsuo; Hayashi, Hirokazu; Minato, Kazuo

    2005-01-01

    The present status of research works on pyrochemical processing is introduced in view of: 1) the process concept; 2) R and D progress; 3) new experimental facilities in NUCEF. Basic laboratory studies with rare-earth elements have almost been completed and hot tests with americium have been started at the TRU-HITEC facility in NUCEF. (author)

  4. Backfire antennas with dipole elements

    DEFF Research Database (Denmark)

    Nielsen, Erik Dragø; Pontoppidan, Knud

    1970-01-01

    A method is set up for a theoretical investigation of arbitrary backfire antennas based upon dipole structures. The mutual impedance between the dipole elements of the antenna is taken into account, and the field radiated due to a surface wave reflector of finite extent is determined by calculating...

  5. Automatic welding of fuel elements; Soudure automatique des elements combustibles

    Energy Technology Data Exchange (ETDEWEB)

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

    1958-07-01

    The welding process depends on the type of fuel element, the can material and the number of cartridges to be welded: - inert-gas welding (used for G2 and the 1. set of EL3), - inert atmosphere arc welding (used for welding uranium and zirconium), - electronic welding (used for the 2. set of EL3 and the tank of Proserpine). (author) [French] Suivant le type d'element combustible, le materiau de gaine et l'importance de la serie a fabriquer, le soudeur dispose des differents procedes examines dans cette communication: - soudure classique a l'arc sous gaz inerte (utilisee pour G2 et le premier jeu EL3), - soudure en atmosphere complete d'argon (utilisee pour la soudure d'uranium et de zirconium), - soudure electronique (utilisee pourdeuxieme jeu EL3 et la cuve de Proserpine). (auteur)

  6. Superheavy-element spectroscopy: Correlations along element 115 decay chains

    Science.gov (United States)

    Rudolph, D.; Forsberg, U.; Sarmiento, L. G.; Golubev, P.; Fahlander, C.

    2016-05-01

    Following a brief summary of the region of the heaviest atomic nuclei yet created in the laboratory, data on more than hundred α-decay chains associated with the production of element 115 are combined to investigate time and energy correlations along the observed decay chains. Several of these are analysed using a new method for statistical assessments of lifetimes in sets of decay chains.

  7. The Transuranium Elements - Present Status: Nobel Lecture

    Science.gov (United States)

    Seaborg, G. T.

    1951-12-12

    The discovery of the transuranium elements and the work done on them up to the present time are reviewed. The properties of these elements, their relationship to other elements, their place in the periodic table, and the possibility of production and identification of other transuranium elements are discussed briefly.

  8. Reliability-Based Optimization of Structural Elements

    DEFF Research Database (Denmark)

    Sørensen, John Dalsgaard

    In this paper structural elements from an optimization point of view are considered, i.e. only the geometry of a structural element is optimized. Reliability modelling of the structural element is discussed both from an element point of view and from a system point of view. The optimization...

  9. Trace element analysis: a diagnostic tool

    International Nuclear Information System (INIS)

    Qureshi, I.H.; Cheema, M.N.

    1976-09-01

    The human mody continuously assimilates a variety of elements from the environment, and the concentration of these elements in the blood is regulated by means of various homeostatic mechanisms. Some of the elements, though present in very small amounts, have highly specialized functions in initiating many biochemical reactions. These elements, known as essential trace elements, are closely related to human diseases since their deficiency or excess induces physiological changes. Many diseases such as hypertension, atherosclerosis, diabetes, etc., are related to an imbalance in trace element. The measurement of trace elements in body fluids and tissues can, therefore, be effectively employed for diagnostic tests

  10. CERCA's fuel elements instrumentation manufacturing

    International Nuclear Information System (INIS)

    Harbonnier, G.; Jarousse, C.; Pin, T.; Febvre, M.; Colomb, P.

    2005-01-01

    When research and test reactors wish to further understand the Fuel Elements behavior when operating as well as mastering their irradiation conditions, operators carry out neutron and thermo hydraulic analysis. For thermal calculation, the codes used have to be preliminary validated, at least in the range of the reactor safety operational limits. When some further investigations are requested either by safety authorities or for its own reactor needs, instrumented tools are the ultimate solution for providing representative measurements. Such measurements can be conducted for validating thermal calculation codes, at nominal operating condition as well as during transients ones, or for providing numerous and useful data in the frame of a new products qualification program. CERCA, with many years of experience for implanting thermocouples in various products design, states in this poster his manufacturing background on instrumented elements, plates or targets. (author)

  11. Automation of finite element methods

    CERN Document Server

    Korelc, Jože

    2016-01-01

    New finite elements are needed as well in research as in industry environments for the development of virtual prediction techniques. The design and implementation of novel finite elements for specific purposes is a tedious and time consuming task, especially for nonlinear formulations. The automation of this process can help to speed up this process considerably since the generation of the final computer code can be accelerated by order of several magnitudes. This book provides the reader with the required knowledge needed to employ modern automatic tools like AceGen within solid mechanics in a successful way. It covers the range from the theoretical background, algorithmic treatments to many different applications. The book is written for advanced students in the engineering field and for researchers in educational and industrial environments.

  12. Transuranic elements and nuclear wastes

    International Nuclear Information System (INIS)

    Bowen, V.T.

    1974-01-01

    The contamination of oceans and marine life by transuranic elements (elements of atomic number greater than 92) is the main concern of this paper. Wastes of three different types, low-level, intermediate-level, and high-level, are considered. Fallout of Pu and other transuranics is discussed as it affects marine biogeochemistry and geochemistry. Different paths of absorption or uptake under various conditions of release are pointed out in some detail. The transfer of radioactivity to mammals from marine sources is considered in some detail. Waste disposal practices at Windscale are reviewed. It is concluded that the problems associated with transuranic wastes in oceans and marine life are very complex. Monitoring of waste release and uptake is concluded to not be enough. Each situation of release of transuranics to the environment should be treated as an experiment and milked for all the information that it can reveal. The tremendous expenditure of money and manpower necessary for such an undertaking is stressed

  13. Representation Elements of Spatial Thinking

    Science.gov (United States)

    Fiantika, F. R.

    2017-04-01

    This paper aims to add a reference in revealing spatial thinking. There several definitions of spatial thinking but it is not easy to defining it. We can start to discuss the concept, its basic a forming representation. Initially, the five sense catch the natural phenomenon and forward it to memory for processing. Abstraction plays a role in processing information into a concept. There are two types of representation, namely internal representation and external representation. The internal representation is also known as mental representation; this representation is in the human mind. The external representation may include images, auditory and kinesthetic which can be used to describe, explain and communicate the structure, operation, the function of the object as well as relationships. There are two main elements, representations properties and object relationships. These elements play a role in forming a representation.

  14. Finite elements methods in mechanics

    CERN Document Server

    Eslami, M Reza

    2014-01-01

    This book covers all basic areas of mechanical engineering, such as fluid mechanics, heat conduction, beams, and elasticity with detailed derivations for the mass, stiffness, and force matrices. It is especially designed to give physical feeling to the reader for finite element approximation by the introduction of finite elements to the elevation of elastic membrane. A detailed treatment of computer methods with numerical examples are provided. In the fluid mechanics chapter, the conventional and vorticity transport formulations for viscous incompressible fluid flow with discussion on the method of solution are presented. The variational and Galerkin formulations of the heat conduction, beams, and elasticity problems are also discussed in detail. Three computer codes are provided to solve the elastic membrane problem. One of them solves the Poisson’s equation. The second computer program handles the two dimensional elasticity problems, and the third one presents the three dimensional transient heat conducti...

  15. Chemistry of the transactinide elements

    International Nuclear Information System (INIS)

    Schaedel, Matthias

    1996-01-01

    Synthesis and decay of elements in the upper end of periodic table (z=104 to 111) are described. In view of very short half-life of about 1 s, the production of the transactinide isotopes and their transport to the separation and detection chamber are to be necessarily carried out employing fast and reliable techniques. Advances in microchemical separation techniques such as OLGA-II, HEVI, ARCA-II and SISAK, coupled to sensitive detection methods enable the detection of these heavier transactinide elements at atomic level. Their position in the periodic table and similarities, if any, with the corresponding lighter homologs are discussed based on their predicted and observed chemical behaviour. (author). 70 refs., 15 figs

  16. Solid Lubricated Rolling Element Bearings

    Science.gov (United States)

    1979-02-15

    lubricant into uneven patches of varnish . This varnish , along with the file-like action of the exposed ball carbides on the relatively softer races, can...its structure. Fluorine , one of the most reactive elements, reacts with graphite without combustion from about 790’F to 1022°F, forming a grey-colored...to allow for molding and machining after molding. 0 Method 2 (Hughes) Impregnating these dense weaves with a Thermid 600 polyimide varnish

  17. Integral nuclear fuel element assembly

    International Nuclear Information System (INIS)

    Schluderberg, D. C.

    1985-01-01

    An integral nuclear fuel element assembly utilizes longitudinally finned fuel pins. The continuous or interrupted fins of the fuel pins are brazed to fins of juxtaposed fuel pins or directly to the juxtaposed fuel pins or both. The integrally brazed fuel assembly is designed to satisfy the thermal and hydraulic requirements of a fuel assembly lattice having moderator to fuel atom ratios required to achieve high conversion and breeding ratios

  18. Grid for a fuel element

    International Nuclear Information System (INIS)

    1975-01-01

    An illustrative embodiment of the invention has one or more corrugations formed in the surface of a fuel element grid for a nuclear reactor. Not only does the corrugation enhance the strength of the grid plate in which it is formed, but it also provides a simple and convenient means for regulating the reactor coolant pressure drop through an appropriate choice of the corrugation depth

  19. Blade-element/momentum theory

    DEFF Research Database (Denmark)

    Sørensen, Jens Nørkær

    2016-01-01

    Although there exists a large variety of methods for predicting performance and loadings of wind turbines, the only approach used today by wind turbine manufacturers is based on the blade-element/momentum (BEM) theory by Glauert (Aerodynamic theory. Springer, Berlin, pp. 169-360, 1935). A basic...... assumption in the BEM theory is that the flow takes place in independent stream tubes and that the loading is determined from two-dimensional sectional airfoil characteristics....

  20. Trace Elements in Cardiovascular Diseases

    Energy Technology Data Exchange (ETDEWEB)

    Masironi, R. [Cardiovascular Diseases Unit, World Health Organization, Geneva (Switzerland)

    1970-07-01

    Cardiovascular diseases are the leading cause of death in industrialized countries. Their incidence increases, apparently, as a, function of technological progress so that in the future they may become a major public health problem in developing countries too. Early diagnosis and prevention are the tools best suited to curb such an alarming trend, but our knowledge of these topics is unsatisfactory, Valuable information would be obtained through a systematic investigation of trace elements in relation to cardiovascular function and to various types of cardiovascular diseases. Such studies would provide clues to the following questions: 1. Why does the incidence and type of cardiovascular disease differ from one country to another? May this be related to differences in tissue mineral concentrations among various population groups? 2. Which trace elements if any are beneficial to cardiovascular health, and which are harmful ones that may act as aetiological agents for some cardiovascular diseases? 3. Is it possible to utilize measurements of mineral element concentration for diagnostic purposes in cardiovascular disease? (author)

  1. Inorganic elements in sugar samples

    Energy Technology Data Exchange (ETDEWEB)

    Salles, Paulo M.B. de; Campos, Tarcisio P.R. de, E-mail: pauladesalles@yahoo.com.br, E-mail: tprcampos@pq.cnpq.br [Universidade Federal de Minas Gerais (DEN/UFMG), Belo Horizonte, MG (Brazil). Departamento de Engenharia Nuclear; Menezes, Maria Angela de B.C., E-mail: menezes@cdtn.br [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2013-07-01

    Sugar is considered a safe food ingredient; however, it can be contaminated by organic elements since its planting until its production process. Thus, this study aims at checking the presence of inorganic elements in samples of crystal, refined and brown sugar available for consumption in Brazil. The applied technique was neutron activation analysis, the k{sub 0} method, using the TRIGA MARK - IPR-R1 reactor located at CDTN/CNEN, in Belo Horizonte. It was identified the presence of elements such as, Au, Br, Co, Cr, Hf, K, Na, Sb, Sc and Zn in the samples of crystal/refined sugar and the presence of As, Au, Br, Ca, Co, Cr, Cs, Fe, Hf, K, Na, Sb, Sc, Sm, Sr, Th and Zn in the brown sugar samples. The applied technique was appropriate to this study because it was not necessary to put the samples in solution, essential condition in order to apply other techniques, avoiding contaminations and sample losses, besides allowing a multi elementary detection in different sugar samples. (author)

  2. Fast breeder fuel element development

    International Nuclear Information System (INIS)

    Marth, W.; Muehling, G.

    1983-08-01

    This report is a compilation of the papers which have been presented during a seminar ''Fast Breeder Fuel Element Development'' held on November 15/16, 1982 at KfK. The papers give a survey of the status, of the obtained results and of the necessary work, which still has to be done in the frame of various development programmes for fast breeder fuel elements. In detail the following items were covered by the presentations: - the requirements and boundary conditions for the design of fuel pins and elements both for the reference concept of the SNR 300 core and for the large, commercial breeder type of the future (presentation 1,2 and 6); - the fabrication, properties and characterization of various mixed oxide fuel types (presentations 3,4 and 5); - the operational fuel pin behaviour, limits of different design concepts and possible mechanism for fuel pin failures (presentations (7 and 8); - the situation of cladding- and wrapper materials development especially with respect to the high burn-up values of commercial reactors (presentations 9 and 10); - the results of the irradiation experiments performed under steady-state and non-stationary operational conditions and with failed fuel pins (presentations 11, 12, 13 and 14). (orig./RW) [de

  3. Inorganic elements in sugar samples

    International Nuclear Information System (INIS)

    Salles, Paulo M.B. de; Campos, Tarcisio P.R. de

    2013-01-01

    Sugar is considered a safe food ingredient; however, it can be contaminated by organic elements since its planting until its production process. Thus, this study aims at checking the presence of inorganic elements in samples of crystal, refined and brown sugar available for consumption in Brazil. The applied technique was neutron activation analysis, the k 0 method, using the TRIGA MARK - IPR-R1 reactor located at CDTN/CNEN, in Belo Horizonte. It was identified the presence of elements such as, Au, Br, Co, Cr, Hf, K, Na, Sb, Sc and Zn in the samples of crystal/refined sugar and the presence of As, Au, Br, Ca, Co, Cr, Cs, Fe, Hf, K, Na, Sb, Sc, Sm, Sr, Th and Zn in the brown sugar samples. The applied technique was appropriate to this study because it was not necessary to put the samples in solution, essential condition in order to apply other techniques, avoiding contaminations and sample losses, besides allowing a multi elementary detection in different sugar samples. (author)

  4. Root uptake of transuranic elements

    International Nuclear Information System (INIS)

    Schulz, R.K.

    1977-01-01

    The uptake of elements by plant roots is one of the important pathways of entry of many elements into the food chain of man. Data are cited showing plutonium concentration ratios, plant/soil, ranging from 10 -10 to 10 -3 . Concentration ratios for americium range from 10 -7 to 10 +1 . Limited experiments with curium and neptunium indicate that root uptake of curium is similar to that of americium and that plant uptake of neptunium is substantially larger than that of curium and americium. The extreme ranges of concentration ratios cited for plutonium and americium are due to a number of causes. Experimental conditions such as very intensive cropping will lead to abnormally high concentration ratios. In some experiments, addition of chelating agents markedly increased plant root uptake of transuranic elements. Particle size and composition of the source material influenced uptake of the transuranics by plants. Translocation within the plant, and soil factors such as pH and organic matter content, all affect concentration ratios

  5. Elemental composition of cosmic ray

    International Nuclear Information System (INIS)

    Yanagida, Shohei

    1987-01-01

    The report first summarizes some data that have been obtained so far from observation of isotopes and elements in cosmic rays in the low energy region. Then, objectives of studies planned to be carried out with Astromag are outlined and the number of incident particles expected to be measured by baloon observation is estimated. Heavy elements with atomic numbers of greater than 30 are considered to be formed through neutron absorption reactions by the s- or r-process. Observations show that products of the r-process is abundant in cosmic ray sources. The escape length depends on energy. In relation to this, it has been reported that the ratios Ar-Fe and Ca-Fe increase above 200 GeV-n while such a tendency is not observed for K, Sc, Ti or V. Thus, no satisfactory models are available at present which can fully explain the changes in the escape length. The ratio 3 He- 4 He in the range of 5 - 10 GeV-n is inconsistent with the general theory that interprets the escape length of heavy elements. Some models, including the supermetallicity model and Wolf Rayet theory, have been proposed to explain unusual ratios of isotopes in cosmic rays, but more measurements are required to verify them. It is expected that Astromag can serve to make observations that can clarify these points. (Nogami, K.)

  6. Group theoretical classification of chemical elements

    International Nuclear Information System (INIS)

    Byakov, V.M.; Kulakov, V.I.; Rumer, Y.B.; Fet, A.L.

    1977-01-01

    The method of classification of chemical elements, based on group symmetry principles, is compared with element properties. Elements are considered to be states of a single quantum system, the atomic structure being ignored. Elements treated as states of the system, break down into successively diminishing subsystems, big and small multiplets. The theory, being a group classification, does not describe in detail any of element properties, but leads to a unified qualitative description of all of them simultaneously

  7. Adobe Photoshop Elements 10 unleash the hidden performance of Elements

    CERN Document Server

    Galer, Mark

    2011-01-01

    Master the most powerful photo editing tools and techniques that Elements has to offer! Using step-by-step projects, Mark Galer will have you creating stunning images in no time at all. Whether you want to create impressive, seamless montages, optimize your photos for perfect print quality, or simply enhance your images for maximum impact, Maximum Performance will give you the skills and know-how you need to create professional quality results. Featured projects teach you how to work with multilayered 16 bit/channel files, as well as convert to black and white using Adobe Camera Raw, create

  8. Peridynamic Multiscale Finite Element Methods

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Timothy [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Bond, Stephen D. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Littlewood, David John [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Moore, Stan Gerald [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-12-01

    The problem of computing quantum-accurate design-scale solutions to mechanics problems is rich with applications and serves as the background to modern multiscale science research. The prob- lem can be broken into component problems comprised of communicating across adjacent scales, which when strung together create a pipeline for information to travel from quantum scales to design scales. Traditionally, this involves connections between a) quantum electronic structure calculations and molecular dynamics and between b) molecular dynamics and local partial differ- ential equation models at the design scale. The second step, b), is particularly challenging since the appropriate scales of molecular dynamic and local partial differential equation models do not overlap. The peridynamic model for continuum mechanics provides an advantage in this endeavor, as the basic equations of peridynamics are valid at a wide range of scales limiting from the classical partial differential equation models valid at the design scale to the scale of molecular dynamics. In this work we focus on the development of multiscale finite element methods for the peridynamic model, in an effort to create a mathematically consistent channel for microscale information to travel from the upper limits of the molecular dynamics scale to the design scale. In particular, we first develop a Nonlocal Multiscale Finite Element Method which solves the peridynamic model at multiple scales to include microscale information at the coarse-scale. We then consider a method that solves a fine-scale peridynamic model to build element-support basis functions for a coarse- scale local partial differential equation model, called the Mixed Locality Multiscale Finite Element Method. Given decades of research and development into finite element codes for the local partial differential equation models of continuum mechanics there is a strong desire to couple local and nonlocal models to leverage the speed and state of the

  9. Calculation of binary phase diagrams between the actinide elements, rare earth elements, and transition metal elements

    International Nuclear Information System (INIS)

    Selle, J.E.

    1992-01-01

    Attempts were made to apply the Kaufman method of calculating binary phase diagrams to the calculation of binary phase diagrams between the rare earths, actinides, and the refractory transition metals. Difficulties were encountered in applying the method to the rare earths and actinides, and modifications were necessary to provide accurate representation of known diagrams. To calculate the interaction parameters for rare earth-rare earth diagrams, it was necessary to use the atomic volumes for each of the phases: liquid, body-centered cubic, hexagonal close-packed, and face-centered cubic. Determination of the atomic volumes of each of these phases for each element is discussed in detail. In some cases, empirical means were necessary. Results are presented on the calculation of rare earth-rare earth, rare earth-actinide, and actinide-actinide diagrams. For rare earth-refractory transition metal diagrams and actinide-refractory transition metal diagrams, empirical means were required to develop values for the enthalpy of vaporization for rare earth elements and values for the constant (C) required when intermediate phases are present. Results of using the values determined for each element are presented

  10. Element-by-element parallel spectral-element methods for 3-D teleseismic wave modeling

    KAUST Repository

    Liu, Shaolin

    2017-09-28

    The development of an efficient algorithm for teleseismic wave field modeling is valuable for calculating the gradients of the misfit function (termed misfit gradients) or Fréchet derivatives when the teleseismic waveform is used for adjoint tomography. Here, we introduce an element-by-element parallel spectral-element method (EBE-SEM) for the efficient modeling of teleseismic wave field propagation in a reduced geology model. Under the plane-wave assumption, the frequency-wavenumber (FK) technique is implemented to compute the boundary wave field used to construct the boundary condition of the teleseismic wave incidence. To reduce the memory required for the storage of the boundary wave field for the incidence boundary condition, a strategy is introduced to efficiently store the boundary wave field on the model boundary. The perfectly matched layers absorbing boundary condition (PML ABC) is formulated using the EBE-SEM to absorb the scattered wave field from the model interior. The misfit gradient can easily be constructed in each time step during the calculation of the adjoint wave field. Three synthetic examples demonstrate the validity of the EBE-SEM for use in teleseismic wave field modeling and the misfit gradient calculation.

  11. Duration judgements over multiple elements

    Directory of Open Access Journals (Sweden)

    Inci eAyhan

    2012-11-01

    Full Text Available We investigated the limits of the number of events observers can simultaneously time. For single targets occurring in one of eight positions sensitivity to duration was improved for spatially pre-cued items as compared to post-cued items indicating that exogenous driven attention can improve duration discrimination. Sensitivity to duration for pre-cued items was also marginally better for single items as compared to eight items indicating that even after the allocation of focal attention, distracter items can interfere with the encoding of duration. For an eight item array discrimination was worse for post-cued locations as compared to pre-cued locations indicating both that attention can improve duration discrimination performance and that it was not possible to access a perfect memory trace of the duration of eight elements. The interference from the distracters in the pre-cued eight item array may reflect some mandatory averaging of target and distracter events. To further explore duration averaging we asked subjects to explicitly compare average durations of multiple item arrays against a single item standard duration. Duration discrimination thresholds were significantly lower for single elements as compared to multiple elements, showing that averaging, either automatically or intentionally, impairs duration discrimination. There was no set size effect. Performance was the same for averages of two and eight items, but performance with even an average of two items was worse than for one item. This was also true for sequential presentation indicating poor performance was not due to limits on the division of attention across items. Rather performance appears to be limited by an inability to remember or aggregate duration information from two or more items. Although it is possible to manipulate perceived duration locally, there appears to be no perceptual mechanisms for aggregating local durations across space.

  12. Basic Elements of Knowledge Management

    Directory of Open Access Journals (Sweden)

    Marcin W. Staniewski

    2007-10-01

    Full Text Available The article is a review of basic knowledge management terminology. It presents such a description as: knowledge resources levels (data, information, knowledge, and wisdom, knowledge sources (internal, external, and knowledge typology (implicit, tacit or individual, social. Moreover the article characterizes knowledge management process, knowledge management system and main knowledge management strategies (codification, personalization. At the end of the article there is mentioned the knowledge creating process (the concept of knowledge creation spiral and the role of Intelligence Technology (IT and organizational culture as main elements supporting knowledge management implementation in organizations.

  13. Fuel element for nuclear reactors

    International Nuclear Information System (INIS)

    Cadwell, D.J.

    1982-01-01

    The invention concerns a fuel element for nuclear reactors with fuel rods and control rod guide tubes, where the control rod guide tubes are provided with flat projections projecting inwards, in the form of local deformations of the guide tube wall, in order to reduce the radial play between the control rod concerned and the guide tube, and to improve control rod movement. This should ensure that wear on the guide tubes is largely prevented which would be caused by lateral vibration of the control rods in the guide tubes, induced by the flow of coolant. (orig.) [de

  14. Elements of abstract harmonic analysis

    CERN Document Server

    Bachman, George

    2013-01-01

    Elements of Abstract Harmonic Analysis provides an introduction to the fundamental concepts and basic theorems of abstract harmonic analysis. In order to give a reasonably complete and self-contained introduction to the subject, most of the proofs have been presented in great detail thereby making the development understandable to a very wide audience. Exercises have been supplied at the end of each chapter. Some of these are meant to extend the theory slightly while others should serve to test the reader's understanding of the material presented. The first chapter and part of the second give

  15. Linear and Nonlinear Finite Elements.

    Science.gov (United States)

    1983-12-01

    Metzler. Con/ ugte rapdent solution of a finite element elastic problem with high Poson rato without scaling and once with the global stiffness matrix K...nonzero c, that makes u(0) = 1. According to the linear, small deflection theory of the membrane the central displacement given to the membrane is not... theory is possible based on the approximations (l-y 2 )t = +y’ 2 +y𔃾 , (1-y𔃼)’ 1-y’ 2 - y" (6) that change eq. (5) to V𔃺) = , [yŖ(1 + y") - Qy𔃼

  16. INDUSTRIAL DESIGN ELEMENTS IN MARKETING

    Directory of Open Access Journals (Sweden)

    TOCARIU Liliana

    2015-06-01

    Full Text Available Industrial design represents an important 20th century phenomenon, which contributed to the spectacular development of human society. There are a lot of domains in which the insertion of the industrial design methods and theories is extremely necessary, becoming common practice. Marketing uses industrial design elements in order to draw up advertisements for products, to develop logos or packaging with all its attached factors, to organise promotional sales with the view of penetrating a certain market or of appealing to a large number of consumers.

  17. Transportation of irradiated fuel elements

    International Nuclear Information System (INIS)

    Preece, A.H.

    1980-01-01

    The report falls under the headings: introduction (explaining the special interest of the London Borough of Brent, as forming part of the route for transportation of irradiated fuel elements); nuclear power (with special reference to transport of spent fuel and radioactive wastes); the flask aspect (design, safety regulations, criticisms, tests, etc.); the accident aspect (working manual for rail staff, train formation, responsibility, postulated accident situations); the emergency arrangements aspect; the monitoring aspect (health and safety reports); legislation; contingency plans; radiation - relevant background information. (U.K.)

  18. Elements of partial differential equations

    CERN Document Server

    Sneddon, Ian Naismith

    1957-01-01

    Geared toward students of applied rather than pure mathematics, this volume introduces elements of partial differential equations. Its focus is primarily upon finding solutions to particular equations rather than general theory.Topics include ordinary differential equations in more than two variables, partial differential equations of the first and second orders, Laplace's equation, the wave equation, and the diffusion equation. A helpful Appendix offers information on systems of surfaces, and solutions to the odd-numbered problems appear at the end of the book. Readers pursuing independent st

  19. Platinum-group element mineralization

    International Nuclear Information System (INIS)

    Gruenewaldt, G.

    1985-01-01

    The purpose of this investigation is to determine the geological processes responsible for the abnormal enrichment of the platinum-group elements (PGE) in the mineralized layers of the Bushveld Complex. Questions asked are: what processes caused enrichment of the Bushveld magma in the PGE ; by what processes were these PGE concentrated in the mineralized layers ; was contamination of the Bushveld magma from external sources important in the formation of the PGE enriched layers ; what are the effects of fractional crystallization on the PGE ratios

  20. Low aperture magnetic elements measurements

    International Nuclear Information System (INIS)

    Aleksandrov, V.A.; Mikhajlichenko, A.A.; Parkhomchuk, V.V.; Seryj, A.A.; Shil'tsev, V.D.

    1991-01-01

    Two new methods of magnetic field measurements in low aperture elements are discussed. The first method uses thin magnetoresistive bismuth wire and the second-strained wire with AC. Principles of measuring used in the last technique are different from well known SLAC method of vibrating wire. Results of testing 0.38 T/mm quadrupole and VLEPP final focus test 3 T/mm lens are presented. Brief comparing of the lens axis determination precision of these methods is also discussed. 4 refs.; 8 figs

  1. Spacer grid for fuel elements

    International Nuclear Information System (INIS)

    Hensolt, T.; Huenner, M.; Rau, P.; Veca, A.

    1978-01-01

    The spacer grid for fuel elements of a gas-cooled fast breeder reactor (but also for PWRs and BWRs) consists of a lattice field with dodecagonal meshes. These meshes are formed by three each adjacent hexagons grouped arround a central axis. The pairs of legs extending into the dodecagon and being staggered by 120 0 are designed as knubs with inclined abutting surfaces for the fuel rods. By this means there is formed a three-point bearing for centering the fuel rods. The spacer grid mentioned above is rough-worked from a single disc- resp. plate-shaped body (unfinished piece). (DG) [de

  2. Spacer grid for fuel elements

    International Nuclear Information System (INIS)

    Hensolt, T.; Huenner, M.; Rau, P.; Veca, A.

    1980-01-01

    The spacer grid for fuel elements of a gas-cooled fast breeder reactor (but also for PWRs and BWRs) consists of a lattice field with dodecagonal meshes. These meshes are formed by three each adjacent hexagons grouped arround a central axis. The pairs of legs extending into the dodecagon and being staggered by 120 are designed as knubs with inclined abutting surfaces for the fuel rods. By this means there is formed a three-point bearing for centering the fuel rods. The spacer grid mentioned above is rough-worked from a single disc- resp. plate-shaped body (unfinished piece). (orig.)

  3. Elemental composition of Malawian rice.

    Science.gov (United States)

    Joy, Edward J M; Louise Ander, E; Broadley, Martin R; Young, Scott D; Chilimba, Allan D C; Hamilton, Elliott M; Watts, Michael J

    2017-08-01

    Widespread potential dietary deficiencies of calcium (Ca), iron (Fe), iodine (I), selenium (Se) and zinc (Zn) have been identified in Malawi. Several deficiencies are likely to be compounded by high phytic acid (PA) consumption. Rice (Oryza sativa) is commonly consumed in some Malawian populations, and its mineral micronutrient content is important for food security. The considerable irrigation requirements and flooded conditions of paddy soils can also introduce or mobilise potentially toxic elements including arsenic (As), cadmium (Cd) and lead (Pb). The aim of this study was to determine the mineral composition of rice sampled from farmers' fields and markets in Malawi. Rice was sampled from 18 extension planning areas across Malawi with 21 white (i.e. polished) and 33 brown samples collected. Elemental composition was determined by inductively coupled plasma-mass spectrometry (ICP-MS). Arsenic speciation was performed using high-performance liquid chromatography (HPLC)-ICP-MS. Concentration of PA was determined using a PA-total phosphorus assay. Median total concentrations (mg kg -1 , dry weight) of elements important for human nutrition in brown and white rice, respectively, were: Ca = 66.5 and 37.8; Cu = 3.65 and 2.49; Fe = 22.1 and 7.2; I = 0.006 and rice samples, respectively, median PA concentrations were 5438 and 1906 mg kg -1 , and median PA:Zn molar ratios were 29 and 13. Concentrations of potentially toxic elements (mg kg -1 , dry weight) in brown and white rice samples, respectively, were: As = 0.030 and 0.006; Cd  ≤ 0.002 and 0.006; Pb = 0.008 and 0.008. Approximately 95 % of As was found to be inorganic As, where this could be quantified. Malawian rice, like the more widely consumed staple grain maize, contains inadequate Ca, I, Se or Zn to meet dietary requirements. Biofortification strategies could significantly increase Se and Zn concentrations and require further investigation. Concentrations of Fe in rice grain varied

  4. Fluidic Elements based on Coanda Effect

    Directory of Open Access Journals (Sweden)

    Constantin OLIVOTTO

    2010-12-01

    Full Text Available This paper contains first some definitions and classifications regarding the fluidic elements. Thegeneral current status is presented, nominating the main specific elements based on the Coanda effect developedspecially in Romania. In particularly the development of an original bistable element using industrial compressedair at industrial pressure supply is presented. The function of this element is based on the controlled attachmentof the main jet at a curved wall through the Coanda effect. The methods used for particular calculation andexperiments are nominated. The main application of these elements was to develop a specific execution element:a fluidic step–by-step motor based on the Coanda effect.

  5. Unified fuel elements development for research reactors

    International Nuclear Information System (INIS)

    Vatulin, A.; Stetsky, Y.; Dobrikova, I.

    1998-01-01

    Square cross-section rod type fuel elements have been developed for russian pool-type research reactors. new fuel elements can replace the large nomenclature of tubular fuel elements with around, square and hexahedral cross-sections and to solve a problem of enrichment reduction. the fuel assembly designs with rod type fuel elements have been developed. The overall dimensions of existing the assemblies are preserved in this one. the experimental-industrial fabricating process of fuel elements, based on a joint extrusion method has been developed. The fabricating process has been tested in laboratory conditions, 150 experimental fuel element samples of the various sizes were produced. (author)

  6. Monitoring arrangement for vented nuclear fuel elements

    International Nuclear Information System (INIS)

    Campana, R.J.

    1981-01-01

    In a nuclear fuel reactor core, fuel elements are arranged in a closely packed hexagonal configuration, each fuel element having diametrically opposed vents permitting 180 0 rotation of the fuel elements to counteract bowing. A grid plate engages the fuel elements and forms passages for communicating sets of three, four or six individual vents with respective monitor lines in order to communicate vented radioactive gases from the fuel elements to suitable monitor means in a manner readily permitting detection of leakage in individual fuel elements

  7. Radionuclides in forest biogeocenose elements

    International Nuclear Information System (INIS)

    Bulavik, I.M.; Zhuchenko, T.A.

    1992-01-01

    In 1991 year investigations are made on a studying of the radionuclide distribution (CS-137 and Sr-90) through the main forest biogeocenose elements (a litter a mineral soil layer, overground trees parts) on 5 experimental objects of Gomel' region with a various contamination. Radiation characters of the objects are done. As compared with 1989 year cesium and strontium migration from tress into the litter and from the litter to the soil is shown. In the litter and upper soil layer (5 m) contents of Cs-137 and Sr-90 are 95 and 80% accordingly. The Sr-90 concentration in the wood and the isotope concentration change through yearly layers (1986-1991 years) are studied. Wood layers formed to the accident have a lesser cesium concentration, especially in the oax-tree. The highest Cs and Se translocation, into the wood is noted in the pine the lesse one in the oax-tree. Among all elements of the biogeocenose the highest Cs-137 concentration the litter has and then one-year-old shoots, needles, lives, the bark and the wood go on. Even on the sixth year after the accident Cs concentration in the wood was 20-30 times less, than the one in needes and one-year-old shoot of this year. 4 refs.; 5 tabs

  8. ELEMENTS OF SAFETY IN PARAGLIDING

    Directory of Open Access Journals (Sweden)

    Janez Mekinc

    2016-06-01

    Full Text Available Paragliding is an opportunity for tourism development, depending on what position the sport has place in the local community, the restrictions for paragliders and the safety components of the region. The paper explores the phenomenon of paragliding and safety elements in the Upper Soča region, one of ten best paragliding sites in the world (Placestoseeinyourlifetime, 2015. The purpose of the research is to analyse the safety elements, the development and the risk of paragliding.The goals of the research are to propose solutions in order to improve the safety conditions for paragliding and to make suggestions on the further development of paragliding within the framework of tourism in the Upper Soča destination. According to the interviewees, paragliding is becoming safer from year to year. This is also supported with the ever-growing numbers of pilots, and on the other hand, the number of accidents that do not follow the same trend. The identified causes for the accidents are human errors or weather conditions. The statistical data confirmed the paragliding in the Upper Soča region, with its unique geographical location, has a positive impact on local tourism and its development. The results of the study are useful for paragliders, local tourism stakeholders, researchers of sport tourism, as well to municipalities in the Upper Soča region.

  9. Transuranic elements in marine environments

    International Nuclear Information System (INIS)

    Bowen, V.T.

    1975-04-01

    Transuranic elements are present in marine environments as a result of worldwide fallout, close-in fallout, the SNAP-9A burnup, pipeline disposal of reprocessing wastes, neutron capture by uranium in one-pass cooling-water reactors and the B-52 crash in Thule, Greenland. Distributions and movements of 239 Pu, 240 Pu, 241 Am, and 137 Cs from these introductions in the Atlantic Ocean are being studied partly because the transuranic elements themselves are geochemically interesting, partly because they appear to serve as tracers for specific oceanographic processes, and partly because of concern that man is faced with the problem of disposal of rapidly increasing amounts of transuranics as radioactive waste, and that we must be able, soon, to predict the fates and the effects of those amounts that reach the coastal waters or the deep oceans. Plutonium and americium are widely distributed in the oceans as a result of man's activities. Both appear to be more mobile than expected, and Pu shows little behavior in these environments that had been predicted from laboratory studies. Although their associations with biological material seem to be most striking for rooted plants or Sargassum, it is too premature to dismiss the possibility of their being a real hazard to marine life

  10. Cosmic Feast of the Elements

    Science.gov (United States)

    Morisset, C.; Delgado-Inglada, G.; García-Rojas, J.

    2017-11-01

    In the past few decades most of our understanding of the history and chemical evolution of galaxies has been guided by the study of their stars and gaseous nebulae. Nebulae, thanks to their bright emission lines, are especially useful tracers of chemical elements from the very center to the outskirts of galaxies. In order to pin down the chemical abundances in nebulae, we must rely on careful analysis of emission lines combined with detailed models of the microscopic physical processes inside nebulae and state-of-the-art atomic data. Another important piece of the puzzle is the interplay between galaxy evolution and the activity of their central engines either as optical AGNs or radio jets. Last but not least, let us not forget the huge population of lineless, retired galaxies ionized by hot low-mass evolved stars: after nuclear and star formation activity quiets down, retired galaxies are the natural consequence of galaxy evolution. Grażyna Stasińska has made important contributions to each and every one of those aspects. This conference is to honor her work. We invite you to take part and share the latest news on this cosmic feast that transmutes chemical species, the onward journey of elements inside and outside galaxies either as lonely atoms or gregarious molecules and crystals, and their recycling in stars, which starts the cosmic feast all over again.

  11. Radioactive elements in Pennsylvania waters

    International Nuclear Information System (INIS)

    Rose, A.W.

    1990-01-01

    The first recognition of radioactive elements in natural waters dates back many years, but interest has accelerated in recent years with the advent of concern about the health effects of radioactivity. At the present time, extensive monitoring of public water supplies for radioactive substances is mandated by federal and state law, and monitoring near nuclear facilities is required by federal regulations, so that a great deal of information is accumulating on the amount and distribution of radioactivity in natural waters. These results reveal that small amounts of radioactive elements are universally present in natural waters, and that the concentration vary over an appreciable range as a result of natural processes and human activities. The purpose of this paper is to summarize the origin, behavior, abundance and hazard of the main radioactive species in Pennsylvania surface and ground waters. This treatment is intended to provide background to the interested reader in comprehending questions such as the hazard of radon in homes with private wells and pollution related to the nuclear power cycle

  12. METHODOLOGICAL ELEMENTS OF SITUATIONAL ANALYSIS

    Directory of Open Access Journals (Sweden)

    Tetyana KOVALCHUK

    2016-07-01

    Full Text Available The article deals with the investigation of theoretical and methodological principles of situational analysis. The necessity of situational analysis is proved in modern conditions. The notion “situational analysis” is determined. We have concluded that situational analysis is a continuous system study which purpose is to identify dangerous situation signs, to evaluate comprehensively such signs influenced by a system of objective and subjective factors, to search for motivated targeted actions used to eliminate adverse effects of the exposure of the system to the situation now and in the future and to develop the managerial actions needed to bring the system back to norm. It is developed a methodological approach to the situational analysis, its goal is substantiated, proved the expediency of diagnostic, evaluative and searching functions in the process of situational analysis. The basic methodological elements of the situational analysis are grounded. The substantiation of the principal methodological elements of system analysis will enable the analyst to develop adaptive methods able to take into account the peculiar features of a unique object which is a situation that has emerged in a complex system, to diagnose such situation and subject it to system and in-depth analysis, to identify risks opportunities, to make timely management decisions as required by a particular period.

  13. Element by element review of their atomic weights

    International Nuclear Information System (INIS)

    Peiser, H.S.; Holden, N.E.; Bievre, P. de

    1984-01-01

    The IUPAC 'standard' atomic weights of the terrestrially occurring chemical elements are individually reviewed tracing changes during the past 25 years. Emphasized is the relevant published scientific evidence which in each case constitutes the basis for the expert judgment by the responsible IUPAC Commission. It biennially reports on, recommends, and tabulates the best values of these atomic weights with an implied judgment of their individual reliability. In the introductory part of this Review the history of atomic-weight determinations is sketched. The IUPAC leadership in this data-evaluation project is described as it benefits science, technology, and trade. The remaining experimental uncertainties and natural variabilities are discussed. The treatment of abnormal materials is explained. The principal techniques for determining atomic weights are outlined. The effects of naturally occurring radioactive nuclides are characterized in their essentials. (author)

  14. Recovery of trans-plutonium elements; Recuperation des elements transplutoniens

    Energy Technology Data Exchange (ETDEWEB)

    Espie, J Y; Poncet, B; Simon, A [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1970-07-01

    The object of this work is to study the recovery of americium and curium from the fission-product solution obtained from the processing of irradiated fuel elements made of natural metallic uranium alloyed with aluminium, iron and silicon; these elements have been subjected to an average irradiation of 4000 MW days/ton in a gas-graphite type reactor having a thermal power of 3.7 MW/ton of uranium. The process used consists of 3 extraction cycles and one americium-curium separation: - 1) extraction cycle in 40 per cent TBP: extraction of actinides and lanthanides; elimination of fission products; - 2) extraction cycle in 8 per cent D2EHPA: decontamination from the fission products, decontamination of actinides from lanthanides; - 3) extraction cycle in 40 per cent TBP: separation of the complexing agent and concentration of the actinides; - 4) americium-curium separation by precipitation. (authors) [French] Cette etude a pour objet, la recuperation de l'americium et du curium de la solution de produits de fission provenant du traitement de combustibles irradies a base d'uranium naturel metallique allie a l'aluminium, le fer, et le silicium, et ayant subi une irradiation moyenne de 4000 MWj/t dans une pile du type graphite-gaz, dont la puissance thermique est de 3.7 MW/t d'uranium. Le procede utilise comprend 3 cycles d'extraction et une separation americium-curium: - 1. cycle d'extraction dans le TBP a 40 pour cent: extraction des actinides et des lanthanides, elimination des produits de fission; - 2. cycle d'extraction dans le D2EHPA a 8 pour cent: decontamination en produits de fission, decontamination des actinides en lanthanides; - 3. cycle d'extraction dans le TBP a 40 pour cent: separation du complexant et concentration des actinides; - 4. separation americium-curium par precipitation. (auteurs)

  15. Finite element and boundary element applications in quantum mechanics

    International Nuclear Information System (INIS)

    Ueta, Tsuyoshi

    2003-01-01

    Although this book is one of the Oxford Texts in Applied and Engineering Mathematics, we may think of it as a physics book. It explains how to solve the problem of quantum mechanics using the finite element method (FEM) and the boundary element method (BEM). Many examples analysing actual problems are also shown. As for the ratio of the number of pages of FEM and BEM, the former occupies about 80%. This is, however, reasonable reflecting the flexibility of FEM. Although many explanations of FEM and BEM exist, most are written using special mathematical expressions and numerical computation fields. However, this book is written in the 'language of physicists' throughout. I think that it is very readable and easy to understand for physicists. In the derivation of FEM and the argument on calculation accuracy, the action integral and a variation principle are used consistently. In the numerical computation of matrices, such as simultaneous equations and eigen value problems, a description of important points is also fully given. Moreover, the practical problems which become important in the electron device design field and the condensed matter physics field are dealt with as example computations, so that this book is very practical and applicable. It is characteristic and interesting that FEM is applied to solve the Schroedinger and Poisson equations consistently, and to the solution of the Ginzburg--Landau equation in superconductivity. BEM is applied to treat electric field enhancements due to surface plasmon excitations at metallic surfaces. A number of references are cited at the end of all the chapters, and this is very helpful. The description of quantum mechanics is also made appropriately and the actual application of quantum mechanics in condensed matter physics can also be surveyed. In the appendices, the mathematical foundation, such as numerical quadrature formulae and Green's functions, is conveniently described. I recommend this book to those who need to

  16. Use of analog elements to predict the equilibrium and behavior of transuranic elements in the environment

    International Nuclear Information System (INIS)

    Weimer, W.C.; Laul, J.C.; Kutt, J.C.

    1978-01-01

    Several naturally-occurring elements with chemical properties similar to those of selected transuranic elements have been chosen and are being examined as potential predictors of transuranic geochemical behaviors. This approach may allow the estimation of the long-term behaviors of transuranic elements in the environment by analyses of the steady-state behaviors of their analog elements. The elements receiving principal attention are the transuranics Am and Cm and their proposed lanthanide element analog Nd

  17. 23 Elemental Composition of Suspended Particulate Matter ...

    African Journals Online (AJOL)

    `123456789jkl''''#

    The samples were analysed by energy dispersive x-ray fluorescence. (EDXRF) and atomic absorption spectroscopy (AAS) for up to 10 elements. It was found that 66% of the ..... coefficients between the various crustal elements Ca, Ti, Mn, ...

  18. Fuel elements of research reactors in China

    International Nuclear Information System (INIS)

    Zhou Yongmao; Chen Dianshan; Tan Jiaqiu

    1987-01-01

    This paper describes the current status of design, fabrication of fuel elements for research reactors in China, emphasis is placed on the technology of fuel elements for the High Flux Engineering Test Reactor (HFETR). (author)

  19. FINITE ELEMENT MODEL FOR PREDICTING RESIDUAL ...

    African Journals Online (AJOL)

    FINITE ELEMENT MODEL FOR PREDICTING RESIDUAL STRESSES IN ... the transverse residual stress in the x-direction (σx) had a maximum value of 375MPa ... the finite element method are in fair agreement with the experimental results.

  20. Pump element for a tube pump

    DEFF Research Database (Denmark)

    2011-01-01

    The invention relates to a tube pump comprising a tube and a pump element inserted in the tube, where the pump element comprises a rod element and a first and a second non-return valve member positioned a distance apart on the rod element. The valve members are oriented in the same direction...... relative to the rod element so as to allow for a fluid flow in the tube through the first valve member, along the rod element, and through the second valve member. The tube comprises an at least partly flexible tube portion between the valve members such that a repeated deformation of the flexible tube...... portion acts to alternately close and open the valve members thereby generating a fluid flow through the tube. The invention further relates to a pump element comprising at least two non-return valve members connected by a rod element, and for insertion in an at least partly flexible tube in such tube...

  1. Apparatus for locating defective nuclear fuel elements

    International Nuclear Information System (INIS)

    Lawrie, W.E.

    1979-01-01

    An ultrasonic search unit for locating defective fuel elements within a fuel assembly used in a water cooled nuclear reactor is presented. The unit is capable of freely traversing the restricted spaces between the fuel elements

  2. SUSTAINABLE ALLOY DESIGN: SEARCHING FOR RARE EARTH ELEMENT ALTERNATIVES THROUGH CRYSTAL ENGINEERING

    Science.gov (United States)

    2016-02-26

    Oni, X. Sang, S. V. Raju, S. Dumpala, S. Broderick , A. Kumar, S. Sinnott, S. Saxena, 
K. Rajan, and J. M. LeBeau, Applied Physics Letters 106...Discovery and Design Eds. T. Lookman, F. Alexander and K.Rajan: Springer Series in Materials Science (2016) 2. S.R. Broderick and K. Rajan “Discovering...Cr-Co-Zn-Mn alloy” Intermetallics 68, 107-112 (2016) 5. O.Wodo , S. Broderick and K. Rajan, “ Microstructural Informatics to Driven Rational

  3. Analytic matrix elements with shifted correlated Gaussians

    DEFF Research Database (Denmark)

    Fedorov, D. V.

    2017-01-01

    Matrix elements between shifted correlated Gaussians of various potentials with several form-factors are calculated analytically. Analytic matrix elements are of importance for the correlated Gaussian method in quantum few-body physics.......Matrix elements between shifted correlated Gaussians of various potentials with several form-factors are calculated analytically. Analytic matrix elements are of importance for the correlated Gaussian method in quantum few-body physics....

  4. Integrating Environmentally Responsive Elements in Buildings

    DEFF Research Database (Denmark)

    Heiselberg, Per

    2006-01-01

    Significant improvement have been achieved on efficiency improvements of specific building elements like the building envelope and building equipment and services and whilst most building elements still offer opportunities for efficiency improvements, the greatest future potential lie with techno......Significant improvement have been achieved on efficiency improvements of specific building elements like the building envelope and building equipment and services and whilst most building elements still offer opportunities for efficiency improvements, the greatest future potential lie...

  5. Structural modeling techniques by finite element method

    International Nuclear Information System (INIS)

    Kang, Yeong Jin; Kim, Geung Hwan; Ju, Gwan Jeong

    1991-01-01

    This book includes introduction table of contents chapter 1 finite element idealization introduction summary of the finite element method equilibrium and compatibility in the finite element solution degrees of freedom symmetry and anti symmetry modeling guidelines local analysis example references chapter 2 static analysis structural geometry finite element models analysis procedure modeling guidelines references chapter 3 dynamic analysis models for dynamic analysis dynamic analysis procedures modeling guidelines and modeling guidelines.

  6. Bounded elements in Locally C*-algebras

    International Nuclear Information System (INIS)

    El Harti, Rachid

    2001-09-01

    In order to get more useful information about Locally C*-algebras, we introduce in this paper the notion of bounded elements. First, we study the connection between bounded elements and spectrally bounded elements. Some structural results of Locally C*-algebras are established in Theorems 1 , 2 and 3. As an immediate consequence of Theorem 3, we give a characterization of the connected component of the identity in the group of unitary elements for a Locally C*-algebra. (author)

  7. A unified architecture of transcriptional regulatory elements

    DEFF Research Database (Denmark)

    Andersson, Robin; Sandelin, Albin Gustav; Danko, Charles G.

    2015-01-01

    Gene expression is precisely controlled in time and space through the integration of signals that act at gene promoters and gene-distal enhancers. Classically, promoters and enhancers are considered separate classes of regulatory elements, often distinguished by histone modifications. However...... and enhancers are considered a single class of functional element, with a unified architecture for transcription initiation. The context of interacting regulatory elements and the surrounding sequences determine local transcriptional output as well as the enhancer and promoter activities of individual elements....

  8. Modelling optimization involving different types of elements in finite element analysis

    International Nuclear Information System (INIS)

    Wai, C M; Rivai, Ahmad; Bapokutty, Omar

    2013-01-01

    Finite elements are used to express the mechanical behaviour of a structure in finite element analysis. Therefore, the selection of the elements determines the quality of the analysis. The aim of this paper is to compare and contrast 1D element, 2D element, and 3D element used in finite element analysis. A simple case study was carried out on a standard W460x74 I-beam. The I-beam was modelled and analyzed statically with 1D elements, 2D elements and 3D elements. The results for the three separate finite element models were compared in terms of stresses, deformation and displacement of the I-beam. All three finite element models yield satisfactory results with acceptable errors. The advantages and limitations of these elements are discussed. 1D elements offer simplicity although lacking in their ability to model complicated geometry. 2D elements and 3D elements provide more detail yet sophisticated results which require more time and computer memory in the modelling process. It is also found that the choice of element in finite element analysis is influence by a few factors such as the geometry of the structure, desired analysis results, and the capability of the computer

  9. Downhole Elemental Analysis with LIBS

    Science.gov (United States)

    Moreschini, Paolo; Zacny, Kris; Rickman, Doug

    2011-01-01

    In this paper we discuss a novel instrument, currently under development at Honeybee Robotics with SBIR funding from NASA. The device is designed to characterize elemental composition as a function of depth in non-terrestrial geological formations. The instrument consists of a miniaturized laser-induced breakdown spectrometer (LIBS) analyzer integrated in a 2" diameter drill string. While the drill provides subsurface access, the LIBS analyzer provides information on the elemental composition of the borehole wall. This instrument has a variety of space applications ranging from exploration of the Moon for which it was originally designed, to Mars, as well as a variety of terrestrial applications. Subsurface analysis is usually performed by sample acquisition through a drill or excavator, followed by sample preparation and subsequent sample presentation to an instrument or suite of instruments. An alternative approach consisting in bringing a miniaturized version of the instrument to the sample has many advantages over the traditional methodology, as it allows faster response, reduced probability of cross-contamination and a simplification in the sampling mechanisms. LIBS functions by focusing a high energy laser on a material inducing a plasma consisting of a small fraction of the material under analysis. Optical emission from the plasma, analyzed by a spectrometer, can be used to determine elemental composition. A triangulation sensor located in the sensor head determines the distance of the sensor from the borehole wall. An actuator modifies the position of the sensor accordingly, in order to compensate for changes due to the profile of the borehole walls. This is necessary because LIBS measurements are negatively affected by changes in the relative position of the focus of the laser with respect to the position of the sample (commonly referred to as the "lens to sample distance"). Profiling the borehole is done by adjusting the position of the sensor with a

  10. An Improved Triangular Element With Drilling Rotations

    DEFF Research Database (Denmark)

    Damkilde, Lars; Grønne, Mikael

    2002-01-01

    by rotations in the corner nodes. Compared to Allman's plane element which was the first succesfull implementation of drilling rotations the proposed element has extra displacements in the mid-side nodes parallel to the element sides. The performance should therefore be better and closer to the LST...

  11. Determination of toxic elements in Malaysian foodstuffs

    International Nuclear Information System (INIS)

    Hamzah, Z.; Wood, A.K.H.; Mahmood, C.S.; Hamzah, S.

    1988-01-01

    This project is concentrating on the analysis of toxic elements content in seafoods including fishes, mussel, squid and prawn. Samples were collected from various places throughout Malay Peninsular. Samples were prepared according to RCA research protocol - nuclear techniques for toxic element in foodstuffs. Techniques used for elemental analysis were neutron activation analysis (instrumental and radiochemical) and anodic stripping voltametry. (author). 9 refs, 9 tabs

  12. Diffractive optical elements for space communication terminals

    OpenAIRE

    Herzig, Hans-Peter; Ehbets, Peter; Teijido, Juan M.; Weible, Kenneth J.; Heimbeck, Hans-Joerg

    2007-01-01

    The potential of diffractive optical elements for advanced laser communication terminals has been investigated. Applications include beam shaping of high- power laser diode arrays, optical filter elements for position detection and hybrid (refractive/diffractive) elements. In addition, we present a design example of a miniaturized terminal including diffractive optics.

  13. Using small XML elements to support relevance

    NARCIS (Netherlands)

    G. Ramirez Camps (Georgina); T.H.W. Westerveld (Thijs); A.P. de Vries (Arjen)

    2006-01-01

    htmlabstractSmall XML elements are often estimated relevant by the retrieval model but they are not desirable retrieval units. This paper presents a generic model that exploits the information obtained from small elements. We identify relationships between small and relevant elements and use this

  14. On higher order pyramidal finite elements

    Czech Academy of Sciences Publication Activity Database

    Liu, L.; Davies, K.B.; Křížek, Michal; Guan, L.

    2011-01-01

    Roč. 3, č. 2 (2011), s. 131-140 ISSN 2070-0733 R&D Projects: GA AV ČR(CZ) IAA100190803 Institutional research plan: CEZ:AV0Z10190503 Keywords : pyramidal polynomial basis functions * finite element method * composite elements * three-dimensional mortar elements Subject RIV: BA - General Mathematics Impact factor: 0.750, year: 2011

  15. Element Cycles: An Environmental Chemistry Board Game

    Science.gov (United States)

    Pippins, Tracy; Anderson, Cody M.; Poindexter, Eric F.; Sultemeier, S. Whitney; Schultz, Linda D.

    2011-01-01

    "Element Cycles" is an activity designed to reinforce correlation of essential elements and their different forms in the ecosystem. Students are assigned essential elements to research as homework, then share results, and construct game boards with four ecosphere sections: geosphere (earth), hydrosphere (water), atmosphere (air), and biosphere…

  16. Tool Releases Optical Elements From Spring Brackets

    Science.gov (United States)

    Gum, J. S.

    1984-01-01

    Threaded hooks retract bracket arms holding element. Tool uses three hooks with threaded shanks mounted in ring-shaped holder to pull on tabs to release optical element. One person can easily insert or remove optical element (such as prism or lens) from spring holder or bracket with minimal risk of damage.

  17. Elements from chlorine to calcium nuclear reactions

    CERN Document Server

    Kunz, Wunibald

    1968-01-01

    Nuclear Tables: Part II Nuclear Reactions, Volume 3: The Elements from Chlorine to Calcium contains tabulations of the nuclear reaction values of elements chlorine, argon, potassium, and calcium. These tabulations provide the calculated Q-values of the elements and their isotopes. This book will be of value to general chemistry researchers.

  18. 40 CFR 721.10068 - Elemental mercury.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Elemental mercury. 721.10068 Section... Substances § 721.10068 Elemental mercury. (a) Definitions. The definitions in § 721.3 apply to this section... elemental mercury (CAS. No. 7439-97-6) is subject to reporting under this section for the significant new...

  19. Elements of a Spatial Web

    DEFF Research Database (Denmark)

    Jensen, Christian S.

    2010-01-01

    Driven by factors such as the increasingly mobile use of the web and the proliferation of geo-positioning technologies, the web is rapidly acquiring a spatial aspect. Specifically, content and users are being geo-tagged, and services are being developed that exploit these tags. The research...... community is hard at work inventing means of efficiently supporting new spatial query functionality. Points of interest with a web presence, called spatial web objects, have a location as well as a textual description. Spatio-textual queries return such objects that are near a location argument...... and are relevant to a text argument. An important element in enabling such queries is to be able to rank spatial web objects. Another is to be able to determine the relevance of an object to a query. Yet another is to enable the efficient processing of such queries. The talk covers recent results on spatial web...

  20. Getter for nuclear fuel elements

    International Nuclear Information System (INIS)

    Ross, W.T.; Williamson, H.E.

    1976-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has disposed therein an improved getter capable of gettering reactive gases including a source of hydrogen. The getter comprises a composite with a substrate having thereon a coating capable of gettering reactive gases. The substrate has a greater coefficient of thermal expansion than does the coating, and over a period of time at reactor operating temperatures any protective film on the coating is fractured at various places and fresh portions of the coating are exposed to getter reactive gases. With further passage of time at reactor operating temperatures a fracture of the protective film on the coating will grow into a crack in the coating exposing further portions of the coating capable of gettering reactive gases. 13 claims, 5 drawing figures

  1. Getter for nuclear fuel elements

    International Nuclear Information System (INIS)

    Ross, W.T.; Williamson, H.E.

    1976-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has disposed therein an improved getter capable of gettering reactive gases including a source of hydrogen. The getter comprises a composite with a substrate having thereon a coating capable of gettering reactive gases. The substrate has a greater coefficient of thermal expansion than does the coating, and over a period of time at reactor operating temperatures any protective film on the coating is fractured at various places and fresh portions of the coating are exposed to getter reactive gases. With further passage of time at reactor operating temperatures a fracture of the protective film on the coating will grow into a crack in the coating exposing further portions of the coating capable of gettering reactive gases

  2. Photodisintegration of the heavy elements

    Energy Technology Data Exchange (ETDEWEB)

    Parsons, R W; Collie, C H

    1950-08-01

    The photothresholds for the emission of neutrons by the following elements have been determined; the threshold in MeV is given in the brackets following the symbol: Pt(6.1 +- 0.1), Au(8.1 +- 0.1), Hg(6.6 +- 0.2), Tl(7.3 +- 0.25), Pb(6.9 +- 0.1), Bi(7.2 +- 0.1), Th(6.9 +- 0.15), U(5.8 +- 0.15). The neutrons were detected by the Szilard-Chalmers method of chemical concentration and the ..gamma.. rays were obtained from a small betatron. Rough values of the total cross sections can be estimated from the results.

  3. Detector for failed fuel elements

    International Nuclear Information System (INIS)

    Ito, Masaru.

    1979-01-01

    Purpose: To provide automatic monitor for the separation or reactor water and sampling water, in a failed fuel element detector using a sipping chamber. Constitution: A positional detector for the exact mounting of a sipping chamber on a channel box and a level detector for the detection of complete discharge of cooling water in the sipping chamber are provided in the sipping chamber. The positional detector is contacted to the upper end of the channel box and operated when the sipping chamber is correctly mounted to the fuel assemblies. The level detector comprises a float and a limit switch and it is operated when the water in the sipping chamber is discharged by a predetermined amount. Isolation of reactor water and sampling water are automatically monitored by the signal from these two detectors. (Ikeda, J.)

  4. Elements of algebraic coding systems

    CERN Document Server

    Cardoso da Rocha, Jr, Valdemar

    2014-01-01

    Elements of Algebraic Coding Systems is an introductory text to algebraic coding theory. In the first chapter, you'll gain inside knowledge of coding fundamentals, which is essential for a deeper understanding of state-of-the-art coding systems. This book is a quick reference for those who are unfamiliar with this topic, as well as for use with specific applications such as cryptography and communication. Linear error-correcting block codes through elementary principles span eleven chapters of the text. Cyclic codes, some finite field algebra, Goppa codes, algebraic decoding algorithms, and applications in public-key cryptography and secret-key cryptography are discussed, including problems and solutions at the end of each chapter. Three appendices cover the Gilbert bound and some related derivations, a derivation of the Mac- Williams' identities based on the probability of undetected error, and two important tools for algebraic decoding-namely, the finite field Fourier transform and the Euclidean algorithm f...

  5. Zinc: a multipurpose trace element

    Energy Technology Data Exchange (ETDEWEB)

    Stefanidou, M.; Maravelias, C.; Dona, A.; Spiliopoulou, C. [University of Athens, Department of Forensic Medicine and Toxicology, Athens (Greece)

    2006-01-01

    Zinc (Zn) is one of the most important trace elements in the body and it is essential as a catalytic, structural and regulatory ion. It is involved in homeostasis, in immune responses, in oxidative stress, in apoptosis and in ageing. Zinc-binding proteins (metallothioneins, MTs), are protective in situations of stress and in situations of exposure to toxic metals, infections and low Zn nutrition. Metallothioneins play a key role in Zn-related cell homeostasis due to their high affinity for Zn, which is in turn relevant against oxidative stress and immune responses, including natural killer (NK) cell activity and ageing, since NK activity and Zn ion bioavailability decrease in ageing. Physiological supplementation of Zn in ageing and in age-related degenerative diseases corrects immune defects, reduces infection relapse and prevents ageing. Zinc is not stored in the body and excess intakes result in reduced absorption and increased excretion. Nevertheless, there are cases of acute and chronic Zn poisoning. (orig.)

  6. Nuclear reactor fuel element assemblies

    International Nuclear Information System (INIS)

    Raven, L.F.

    1975-01-01

    A spacer grid for a nuclear fuel element comprises a plurality of cojointed cylindrical ferrules adapted to receive a nuclear fuel pin. Each ferrule has a pair of circumferentially spaced rigid stop members extending inside the ferrule and a spring locating member attached to the ferrule and also extending from the ferrule wall inwardly thereof at such a circumferential spacing relative to the rigid stop members that the line of action of the spring locating member passes in opposition to and between the rigid stop members which lie in the same diametric plane. At least some of the cylindrical ferrules have one rim shaped to promote turbulence in fluid flowing through the grid. (Official Gazette)

  7. Trace Element Analysis of Selenium

    International Nuclear Information System (INIS)

    Soliman, M.S.A.

    2010-01-01

    The present thesis divided into four chapters as follows:Chapter (1):This chapter contains an introduction on different oxidation states of organic and inorganic species for selenium in environmental and biological samples, the process for separation of selenium from these samples and the importance of selenium as a component for these samples. Also gives notes about the techniques which are used in the elemental analysis for selenium species and the detection limits for selenium in these techniques, selenium species in human body and the importance of these species in protecting the body from the different types of cancer and the sources of selenium in environmental samples (soil and water) and distribution levels of selenium in these samples.Chapter (2):This chapter is divided into two parts :The first part deals with the sample collection process for environmental samples (underground water, soil) and the wet digestion ( microwave digestion ) process of soil samples. It also contains the theory of work of the closed microwave digestion system.The second part contains detailed information concerning the theoretical considerations of the used analytical techniques. These techniques include Hydride generation - Atomic Absorption Spectrometer (HG-AAS), Inductively Coupled Plasma Mass Spectrometer (ICP-MS) and Neutron Activation Analysis (NAA).Chapter (3): This chapter includes the methods of sampling, sample preparation, and sample digesition. The measures of quality assurance are disscused in this chapter. It describes in details the closed microwave digestion technique and the analytical methods used in this study which are present in Central Laboratory for Elemental and Isotopic Analysis (CLEIA) and the Egypt Second Research Reactor (ETRR-2). The described techniques are Atomic Absorption Spectrometer (AAS 6 vario, Analytical Jena GmbH, Germany), JMS-PLASMAX2 Mass Spectrometer (ICP-MS) and the Egypt Second Research Reactor (NAA).

  8. Nuclear fuel element leak detection system

    International Nuclear Information System (INIS)

    John, C.D. Jr.

    1978-01-01

    Disclosed is a leak detection system integral with a wall of a building used to fabricate nuclear fuel elements for detecting radiation leakage from the nuclear fuel elements as the fuel elements exit the building. The leak detecting system comprises a shielded compartment constructed to withstand environmental hazards extending into a similarly constructed building and having sealed doors on both ends along with leak detecting apparatus connected to the compartment. The leak detecting system provides a system for removing a nuclear fuel element from its fabrication building while testing for radiation leaks in the fuel element

  9. Remediation using trace element humate surfactant

    Energy Technology Data Exchange (ETDEWEB)

    Riddle, Catherine Lynn; Taylor, Steven Cheney; Bruhn, Debra Fox

    2016-08-30

    A method of remediation at a remediation site having one or more undesirable conditions in which one or more soil characteristics, preferably soil pH and/or elemental concentrations, are measured at a remediation site. A trace element humate surfactant composition is prepared comprising a humate solution, element solution and at least one surfactant. The prepared trace element humate surfactant composition is then dispensed onto the remediation site whereby the trace element humate surfactant composition will reduce the amount of undesirable compounds by promoting growth of native species activity. By promoting native species activity, remediation occurs quickly and environmental impact is minimal.

  10. Superheavy element chemistry. Achievements and perspectives

    International Nuclear Information System (INIS)

    Schaedel, M.

    2007-01-01

    Superheavy elements have been synthesized and chemically characterized one-atom-at-a-time up to element 108. Presently, the quest for element 112 is one of the hottest topics in this field. The transactinide elements 104 to 108 are members of group 4 to 8 of the Periodic Table and element 112 belongs into group 12. Chemical properties of some of these elements, like elements 104 and 105, show stunning deviations from simple extrapolations within their respective group while others exhibit great similarities with their lighter homologues elements. First experiments to investigate seaborgium (Sg, element 106) in aqueous solution were performed. Again, in large international collaborations at the GSI, several gas-phase chemistry experiments were performed with hassium (Hs, element 108). Recently, the highly efficient and very clean separation of Hs was applied for nuclear studies of various Hs nuclides investigating their cross section and their nuclear decay properties in the region of the doubly-magic 270 Hs (Z=108, N=162). To overcome certain limitations of the presently used on-line chemical separations the new TransActinide Separation and Chemistry Apparatus (TASCA) - with a gas-filled recoil separator as a front-end tool - was designed and built at the GSI in a collaborative effort. Presently in its commissioning phase, TASCA shall be a key instrument for a big leap into quantitatively and qualitatively new experiments in the region of superheavy elements. (author)

  11. Rare earth elements: end use and recyclability

    Science.gov (United States)

    Goonan, Thomas G.

    2011-01-01

    Rare earth elements are used in mature markets (such as catalysts, glassmaking, lighting, and metallurgy), which account for 59 percent of the total worldwide consumption of rare earth elements, and in newer, high-growth markets (such as battery alloys, ceramics, and permanent magnets), which account for 41 percent of the total worldwide consumption of rare earth elements. In mature market segments, lanthanum and cerium constitute about 80 percent of rare earth elements used, and in new market segments, dysprosium, neodymium, and praseodymium account for about 85 percent of rare earth elements used. Regardless of the end use, rare earth elements are not recycled in large quantities, but could be if recycling became mandated or very high prices of rare earth elements made recycling feasible.

  12. Development of polygon elements based on the scaled boundary finite element method

    International Nuclear Information System (INIS)

    Chiong, Irene; Song Chongmin

    2010-01-01

    We aim to extend the scaled boundary finite element method to construct conforming polygon elements. The development of the polygonal finite element is highly anticipated in computational mechanics as greater flexibility and accuracy can be achieved using these elements. The scaled boundary polygonal finite element will enable new developments in mesh generation, better accuracy from a higher order approximation and better transition elements in finite element meshes. Polygon elements of arbitrary number of edges and order have been developed successfully. The edges of an element are discretised with line elements. The displacement solution of the scaled boundary finite element method is used in the development of shape functions. They are shown to be smooth and continuous within the element, and satisfy compatibility and completeness requirements. Furthermore, eigenvalue decomposition has been used to depict element modes and outcomes indicate the ability of the scaled boundary polygonal element to express rigid body and constant strain modes. Numerical tests are presented; the patch test is passed and constant strain modes verified. Accuracy and convergence of the method are also presented and the performance of the scaled boundary polygonal finite element is verified on Cook's swept panel problem. Results show that the scaled boundary polygonal finite element method outperforms a traditional mesh and accuracy and convergence are achieved from fewer nodes. The proposed method is also shown to be truly flexible, and applies to arbitrary n-gons formed of irregular and non-convex polygons.

  13. Transuranic element pathways to man

    International Nuclear Information System (INIS)

    Bennett, B.G.

    1976-01-01

    Transfer to man of transuranic element contamination may occur by the inhalation or ingestion pathways. The measurements of globally dispersed fall-out radioactivity have provided pertinent data on the environmental behaviour of plutonium. Additional data may eventually become available for americium. From the measured and inferred concentrations of fall-out plutonium, the inhalation intake has been determined and the ICRP Task Group lung model used to estimate deposition in the lung and transfer to other body organs. The computed body burden reached a maximum of 4pCi in 1964 and is currently about 2.5pCi. A complete diet sampling has been conducted to determine ingestion intake. Plutonium concentration in food ranged from 0.01pCi/kg in shellfish to undetected (less than 0.0003pCi/kg) in milk. Annual intake in total diet is estimated to have been 1.6pCi in 1972. Low uptake by the gastrointestinal tract makes contribution to organ burdens from ingestion negligible. Long-term pathway considerations include plant uptake from the cumulative deposit in soil and resuspension. Downward movement in soil may limit the significance of these long-term pathway components. (author)

  14. Finite element coiled cochlea model

    Science.gov (United States)

    Isailovic, Velibor; Nikolic, Milica; Milosevic, Zarko; Saveljic, Igor; Nikolic, Dalibor; Radovic, Milos; Filipović, Nenad

    2015-12-01

    Cochlea is important part of the hearing system, and thanks to special structure converts external sound waves into neural impulses which go to the brain. Shape of the cochlea is like snail, so geometry of the cochlea model is complex. The simplified cochlea coiled model was developed using finite element method inside SIFEM FP7 project. Software application is created on the way that user can prescribe set of the parameters for spiral cochlea, as well as material properties and boundary conditions to the model. Several mathematical models were tested. The acoustic wave equation for describing fluid in the cochlea chambers - scala vestibuli and scala timpani, and Newtonian dynamics for describing vibrations of the basilar membrane are used. The mechanical behavior of the coiled cochlea was analyzed and the third chamber, scala media, was not modeled because it does not have a significant impact on the mechanical vibrations of the basilar membrane. The obtained results are in good agreement with experimental measurements. Future work is needed for more realistic geometry model. Coiled model of the cochlea was created and results are compared with initial simplified coiled model of the cochlea.

  15. Recycling of Rare Earth Elements

    Science.gov (United States)

    Lorenz, Tom; Bertau, Martin

    2017-01-01

    Any development of an effective process for rare earth (RE) recycling has become more and more challenging, especially in recent years. Since 2011, when commodity prices of REs had met their all-time maximum, prices have dropped rapidly by more than 90 %. An economic process able to offset these fluctuations has to take unconventional methods into account beside well-known strategies like acid/basic leaching or solvent extraction. The solid-state chlorination provides such an unconventional method for mobilizing RE elements from waste streams. Instead of hydrochloric acid this kind of chlorination decomposes NH4Cl thermally to release up to 400 °C hot HCl gas. After cooling the resulting solid metal chlorides may be easily dissolved in pH-adjusted water. Without producing strongly acidic wastes and with NH4Cl as cheap source for hydrogen chloride, solid-state chlorination provides various advantages in terms of costs and disposal. In the course of the SepSELSA project this method was examined, adjusted and optimized for RE recycling from fluorescent lamp scraps as well as Fe14Nd2B magnets. Thereby many surprising influences and trends required various analytic methods to examine the reasons and special mechanisms behind them.

  16. Nuclear fuel element and container

    International Nuclear Information System (INIS)

    Grubb, W.T.; King, L.H.

    1981-01-01

    The invention is based on the discovery that a substantial reduction in metal embrittlement or stress corrosion cracking from fuel pellet-cladding interaction can be achieved by the use of a copper layer or liner in proximity to the nuclear fuel, and an intermediate zirconium oxide barrier layer between the copper layer and the zirconium cladding substrate. The intermediate zirconia layer is a good copper diffusion barrier; also, if the zirconium cladding surface is modified prior to oxidation, copper can be deposited by electroless plating. A nuclear fuel element is described which comprises a central core of fuel material and an elongated container using the system outlined above. The method for making the container is again described. It comprises roughening or etching the surface of the zirconium or zirconium alloy container, oxidizing the resulting container, activating the oxidized surface to allow for the metallic coating of such surfaces by electroless deposition and further coating the activated-oxidized surface of the zirconium or zirconium alloy container with copper, iron or nickel or an alloy thereof. (U.K.)

  17. Division algebras with integral elements

    International Nuclear Information System (INIS)

    Koca, M.; Ozdes, N.

    1988-06-01

    Pairing two elements of a given division algebra furnished with a multiplication rule leads to an algebra of higher dimension restricted by 8. This fact is used to obtain the roots of SO(4) and SP(2) from the roots ±1 of SU(2) and the weights ±1/2 of its spinor representation. The root lattice of SO(8) described by 24 integral quaternions are obtained by pairing two sets of roots of SP(2). The root system of F 4 is constructed in terms of 24 integral and 24 ''half-integral'' quaternions. The root lattice of E 8 expressed as 240 integral octonions are obtained by pairing two sets of roots of F 4 . 24 integral quaternions of SO(8) forming a discrete subgroup of SU(2) is shown to be the automorphism group of the root lattices of SO(8), F 4 and E 8 . The roots of maximal subgroups SO(16), E 7 XSU(2), E 6 XSU(3), SU(9) and SU(5)XSU(5) of E 8 are identified with a simple method. Subsets of the discrete subgroup of SU(2) leaving maximal subgroups of E 8 are obtained. Constructions of E 8 root lattice with integral octonions in 7 distinct ways are made. Magic square of integral lattices of Goddard, Nahm, Olive, Ruegg and Schwimmer are derived. Possible physical applications are suggested. (author). 16 refs, 6 figs, 5 tabs

  18. EXTERNAL ELEMENTS OF INTERCULTURAL MANAGEMENT

    Directory of Open Access Journals (Sweden)

    Ruxandra GEORGESCU

    2017-12-01

    Full Text Available Because nowadays we attach a great importance to our look, this article wants to highlight certain aspects of intercultural management that are external to us, the personal label with which we "come into contact with the whole world” and also this article gives some suggestions that I want to consider for business success. As speakers of a language, we are both "producers" and "consumers" of it. In a sense, this is also the case for the dress code, the "language" of clothing: we dress in a certain way and this send messages to others; We perceive how others are dressed and so we receive messages from them. But there is no difference: we are not the ones who produce the signs. Beyond fashion, myths and motes, clothing, accessories, gesture, face expression, posture and body lines are the first elements that give visual identity to any person. In the business environment, as in the world of fashion, immediate visual identity is the one that generates the first impression.

  19. Transuranium elements: Past, present, and future

    International Nuclear Information System (INIS)

    Seaborg, G.T.

    1995-01-01

    In this illustrative Account the authors shall concentrate on four of these elements, chosen for their current interest or pivotal role. The story of plutonium is one of the most dramatic in the history of science, and today, plutonium is at the focus of an extraordinary dilemma. Mendelevium (element 101) has played a pivotal role in blazing the trail for the discovery of the heaviest elements on the basis of open-quotes one atom at a timeclose quotes production. Seaborgium (element 106) was recently named in my honor by the discoverers and may be the last element, at least for some time, for which it will be possible to determine many chemical properties. And element 110 represents recent evidence, after a lapse of 10 years, for the discovery of a chemical element. Recent (1994) recommendations of the IUPAC Commission on the Nomenclature of Inorganic Chemistry for the renaming of elements 104-108 have met with widespread rejection. The author is using the names proposed by the acknowledged discoverers (elements 106-109) or, in the case of the disputed elements 104 and 105, the most logical names. 21 refs., 5 figs

  20. Method of measuring distance between fuel element

    International Nuclear Information System (INIS)

    Urata, Megumu.

    1991-01-01

    The distance between fuel elements contained in a pool is measured in a contactless manner even for a narrow distance less than 1 mm. That is, the equipment for measuring the distance between spent fuel elements of a spent fuel assembly in a nuclear reactor comprises a optical fiber scope, a lens, an industrial TV camera and a monitor TV. The top end of the optical fiber scope is inserted between fuel elements to be measured. The state thereof is displayed on the TV screen to measure the distance between the fuel elements. The measured results are compared with a previously formed calibration curve to determine the value between the fuel elements. Then, the distance between the fuel elements can be determined in the pool of a power plant without dismantling the fuel assembly, to investigate the state of the bending and estimate the fuel working life. (I.S.)

  1. Chemistry of the actinide elements. Second edition

    International Nuclear Information System (INIS)

    Katz, J.J.; Seaborg, G.T.; Morss, L.R.

    1987-01-01

    This is an exhaustive, updated discourse on the chemistry of Actinides, Volume 1 contains a systematic coverage of the elements Ac, Th, Pa, U, Np, and Pu, which constitutes Part 1 of the work. The characterization of each element is discussed in terms of its nuclear properties, occurrence, preparation, atomic and metallic properties, chemistry of specific compounds, and solution chemistry. The first part of Volume 2 follows the same format as Volume 1 but is confined to the elements Am, Cm, Bk, Cf, and Es, plus a more condensed coverage of the Transeinsteinium elements (Fm, Md, No, Lw, and 104-109). Part 2 of this volume is devoted to a discussion of the actinide elements in general, with a specific focus on electronic spectra, thermodynamic and magnetic properties, the metallic state, structural chemistry, solution kinetics, organometallic chemistry for σ- and π-bonded compounds, and some concluding remarks on the superheavy elements

  2. Automated Fuel Element Closure Welding System

    International Nuclear Information System (INIS)

    Wahlquist, D.R.

    1993-01-01

    The Automated Fuel Element Closure Welding System is a robotic device that will load and weld top end plugs onto nuclear fuel elements in a highly radioactive and inert gas environment. The system was developed at Argonne National Laboratory-West as part of the Fuel Cycle Demonstration. The welding system performs four main functions, it (1) injects a small amount of a xenon/krypton gas mixture into specific fuel elements, and (2) loads tiny end plugs into the tops of fuel element jackets, and (3) welds the end plugs to the element jackets, and (4) performs a dimensional inspection of the pre- and post-welded fuel elements. The system components are modular to facilitate remote replacement of failed parts. The entire system can be operated remotely in manual, semi-automatic, or fully automatic modes using a computer control system. The welding system is currently undergoing software testing and functional checkout

  3. Spacer for supporting fuel element boxes

    International Nuclear Information System (INIS)

    Wild, E.

    1979-01-01

    A spacer plate unit arranged externally on each side and at a predetermined level of a polygonal fuel element box for mutually supporting, with respect to one another, a plurality of the fuel element boxes forming a fuel element bundle, is formed of a first and a second spacer plate part each having the same length and the same width and being constituted of unlike first and second materials, respectively. The first and second spacer plate parts of the several spacer plate units situated at the predetermined level are arranged in an alternating continuous series when viewed in the peripheral direction of the fuel element box, so that any two spacer plate units belonging to face-to-face oriented sides of two adjoining fuel element boxes in the fuel element bundle define interfaces of unlike materials

  4. Fuel elements for LWR power plants

    International Nuclear Information System (INIS)

    Roepenack, H.

    1977-01-01

    About five times more expensive than the fabrication of a fuel element is the enriched uranium contained therein; soon the monthly interest charges for the uranium value of a fuel element reload will account for five percent of the fabrication costs, and much more expensive than all this together can it be if reactor operation has to be interrupted because of damaged elements. Thus, quality assurance comes first. (orig.) [de

  5. Critically Important Object Security System Element Model

    Directory of Open Access Journals (Sweden)

    I. V. Khomyackov

    2012-03-01

    Full Text Available A stochastic model of critically important object security system element has been developed. The model includes mathematical description of the security system element properties and external influences. The state evolution of the security system element is described by the semi-Markov process with finite states number, the semi-Markov matrix and the initial semi-Markov process states probabilities distribution. External influences are set with the intensity of the Poisson thread.

  6. Noncoding Elements: Evolution and Epigenetic Regulation

    KAUST Repository

    Seridi, Loqmane

    2016-03-09

    When the human genome project was completed, it revealed a surprising result. 98% of the genome did not code for protein of which more than 50% are repeats— later known as ”Junk DNA”. However, comparative genomics unveiled that many noncoding elements are evolutionarily constrained; thus luckily to have a role in genome stability and regulation. Though, their exact functions remained largely unknown. Several large international consortia such as the Functional Annotation of Mammalian Genomes (FANTOM) and the Encyclopedia of DNA Elements (ENCODE) were set to understand the structure and the regulation of the genome. Specifically, these endeavors aim to measure and reveal the transcribed components and functional elements of the genome. One of the most the striking findings of these efforts is that most of the genome is transcribed, including non-conserved noncoding elements and repeat elements. Specifically, we investigated the evolution and epigenetic properties of noncoding elements. 1. We compared genomes of evolutionarily distant species and showed the ubiquity of constrained noncoding elements in metazoa. 2. By integrating multi-omic data (such as transcriptome, nucleosome profiling, histone modifications), I conducted a comprehensive analysis of epigenetic properties (chromatin states) of conserved noncoding elements in insects. We showed that those elements have distinct and protective sequence features, undergo dynamic epigenetic regulation, and appear to be associated with the structural components of the chromatin, replication origins, and nuclear matrix. 3. I focused on the relationship between enhancers and repetitive elements. Using Cap Analysis of Gene Expression (CAGE) and RNASeq, I compiled a full catalog of active enhancers (a class of noncoding elements) during myogenesis of human primary cells of healthy donors and donors affected by Duchenne muscular dystrophy (DMD). Comparing the two time-courses, a significant change in the epigenetic

  7. Probabilistic finite elements for fracture mechanics

    Science.gov (United States)

    Besterfield, Glen

    1988-01-01

    The probabilistic finite element method (PFEM) is developed for probabilistic fracture mechanics (PFM). A finite element which has the near crack-tip singular strain embedded in the element is used. Probabilistic distributions, such as expectation, covariance and correlation stress intensity factors, are calculated for random load, random material and random crack length. The method is computationally quite efficient and can be expected to determine the probability of fracture or reliability.

  8. Revised photometric elements of XZ And

    International Nuclear Information System (INIS)

    Giuricin, G.; Mardirossian, F.; Predolin, F.

    1980-01-01

    With the aid of Wood's (1972) computer program we have reanalyzed the photoelectric lightcurves of XZ And, made by Blitzstein (1954) and by Reinhardt (1967), from which appreciably different sets of photometric elements have previously been deduced. The photometric elements that we have derived separately from different lightcurves turned out to be in good agreement. Thus XZ And, whose seondary - somewhat larger than its hotter companion - appears to be roughly a G5-type star, has well-determined photometric elements. (author)

  9. Finite element application to global reactor analysis

    International Nuclear Information System (INIS)

    Schmidt, F.A.R.

    1981-01-01

    The Finite Element Method is described as a Coarse Mesh Method with general basis and trial functions. Various consequences concerning programming and application of Finite Element Methods in reactor physics are drawn. One of the conclusions is that the Finite Element Method is a valuable tool in solving global reactor analysis problems. However, problems which can be described by rectangular boxes still can be solved with special coarse mesh programs more efficiently. (orig.) [de

  10. Superheavy Elements Challenge Experimental and Theoretical Chemistry

    CERN Document Server

    Zvára, I

    2003-01-01

    When reflecting on the story of superheavy elements, the an experimenter, acknowledges the role, which the predictions of nuclear and chemical theories have played in ongoing studies. Today, the problems of major interest for experimental chemistry are the studies of elements 112 and 114 including their chemical identification. Advanced quantum chemistry calculations of atoms and molecules would be of much help. First experiments with element 112 evidence that the metal is much more volatile and inert than mercury.

  11. The elements of life and medicines.

    Science.gov (United States)

    Chellan, Prinessa; Sadler, Peter J

    2015-03-13

    Which elements are essential for human life? Here we make an element-by-element journey through the periodic table and attempt to assess whether elements are essential or not, and if they are, whether there is a relevant code for them in the human genome. There are many difficulties such as the human biochemistry of several so-called essential elements is not well understood, and it is not clear how we should classify elements that are involved in the destruction of invading microorganisms, or elements which are essential for microorganisms with which we live in symbiosis. In general, genes do not code for the elements themselves, but for specific chemical species, i.e. for the element, its oxidation state, type and number of coordinated ligands, and the coordination geometry. Today, the biological periodic table is in a position somewhat similar to Mendeleev's chemical periodic table of 1869: there are gaps and we need to do more research to fill them. The periodic table also offers potential for novel therapeutic and diagnostic agents, based on not only essential elements, but also non-essential elements, and on radionuclides. Although the potential for inorganic chemistry in medicine was realized more than 2000 years ago, this area of research is still in its infancy. Future advances in the design of inorganic drugs require more knowledge of their mechanism of action, including target sites and metabolism. Temporal speciation of elements in their biological environments at the atomic level is a major challenge, for which new methods are urgently needed.

  12. Postirradiation examination of ORR demonstration elements

    International Nuclear Information System (INIS)

    Snelgrove, J.L.; Copeland, G.L.; Hofman, G.L.

    1991-01-01

    Postirradiation examinations of selected U 3 Si 2 fuel elements fabricated by B and W, CERCA, and NUKEM and irradiated during the whole core demonstration in the Oak Ridge Research Reactor are nearing completion. The results of all tests have shown the demonstration fuel elements, produced under production-line conditions, to have performed in the excellent manner expected from earlier tests of miniature fuel plates and full-sized elements. (orig.)

  13. Domain decomposition methods for mortar finite elements

    Energy Technology Data Exchange (ETDEWEB)

    Widlund, O.

    1996-12-31

    In the last few years, domain decomposition methods, previously developed and tested for standard finite element methods and elliptic problems, have been extended and modified to work for mortar and other nonconforming finite element methods. A survey will be given of work carried out jointly with Yves Achdou, Mario Casarin, Maksymilian Dryja and Yvon Maday. Results on the p- and h-p-version finite elements will also be discussed.

  14. About two new efficient nonlinear shell elements

    International Nuclear Information System (INIS)

    Yin, J.; Suo, X.Z.; Combescure, A.

    1989-01-01

    The aim of the paper is to present the development of two shell elements for non linear analysis. The first one is an axisymetric curved shell element and it is developed for buckling analysis. The formulation is given, as well as some typical applications. The second one is an extension of the classical DKT element to large strains taking into account all aspects of non linearities. This element is used for the simulation of four point bending of cracked pipes. The whole experiment is simulated by the calculation taking into account very large strains at the crack tip and propagation of the crack

  15. Discrete elements method of neutron transport

    International Nuclear Information System (INIS)

    Mathews, K.A.

    1988-01-01

    In this paper a new neutron transport method, called discrete elements (L N ) is derived and compared to discrete ordinates methods, theoretically and by numerical experimentation. The discrete elements method is based on discretizing the Boltzmann equation over a set of elements of angle. The discrete elements method is shown to be more cost-effective than discrete ordinates, in terms of accuracy versus execution time and storage, for the cases tested. In a two-dimensional test case, a vacuum duct in a shield, the L N method is more consistently convergent toward a Monte Carlo benchmark solution

  16. Stability analysis of artificial synthetic overweight elements

    International Nuclear Information System (INIS)

    Zhou Jian

    1990-01-01

    Stability of artificial synthetic overweight elements has been analysed theoretically using a diagram of nuclear stability. It is indicated that overweight nucleus can be synthesized only when a certain amount of neutrons participate simultaneously in the synthesis. The maximum number of protons in overweight elements is 1002. The proton number of 'extreme overweight' elements of which the neutron star is possibly composed is in the range from 326 to 1002. It is expected that the mass number of the stable overweight elements with proton number 114 is in the range from 299 to 315

  17. Method of lightening radiation darkened optical elements

    International Nuclear Information System (INIS)

    Reich, F.R.; Schwankoff, A.R.

    1980-01-01

    A method of lightening a radiation-darkened optical element in which visible optical energy or electromagnetic radiation having a wavelength in the range of from about 2000 to about 20,000 angstroms is directed into the radiation-darkened optical element; the method may be used to lighten radiation-darkened optical element in-situ during the use of the optical element to transmit data by electronically separating the optical energy from the optical output by frequency filtering, data cooling, or interlacing the optic energy between data intervals

  18. Books and monographs on finite element technology

    Science.gov (United States)

    Noor, A. K.

    1985-01-01

    The present paper proviees a listing of all of the English books and some of the foreign books on finite element technology, taking into account also a list of the conference proceedings devoted solely to finite elements. The references are divided into categories. Attention is given to fundamentals, mathematical foundations, structural and solid mechanics applications, fluid mechanics applications, other applied science and engineering applications, computer implementation and software systems, computational and modeling aspects, special topics, boundary element methods, proceedings of symmposia and conferences on finite element technology, bibliographies, handbooks, and historical accounts.

  19. Hydriding failure in water reactor fuel elements

    International Nuclear Information System (INIS)

    Sah, D.N.; Ramadasan, E.; Unnikrishnan, K.

    1980-01-01

    Hydriding of the zircaloy cladding has been one of the important causes of failure in water reactor fuel elements. This report reviews the causes, the mechanisms and the methods for prevention of hydriding failure in zircaloy clad water reactor fuel elements. The different types of hydriding of zircaloy cladding have been classified. Various factors influencing zircaloy hydriding from internal and external sources in an operating fuel element have been brought out. The findings of post-irradiation examination of fuel elements from Indian reactors, with respect to clad hydriding and features of hydriding failure are included. (author)

  20. A first course in finite elements

    CERN Document Server

    Fish, Jacob

    2007-01-01

    Developed from the authors, combined total of 50 years undergraduate and graduate teaching experience, this book presents the finite element method formulated as a general-purpose numerical procedure for solving engineering problems governed by partial differential equations.  Focusing on the formulation and application of the finite element method through the integration of finite element theory, code development, and software application, the book is both introductory and self-contained, as well as being a hands-on experience for any student. This authoritative text on Finite Elements:Adopts

  1. 47 CFR 13.203 - Examination elements.

    Science.gov (United States)

    2010-10-01

    ... electronic fundamentals and techniques required to adjust, repair, and maintain radio transmitters and... routing and accounting, etc. (5) Element 7: GMDSS radio operating practices. Questions concerning GMDSS...

  2. Gamma irradiation plants using reactor fuel elements

    International Nuclear Information System (INIS)

    Suckow, W.

    1976-11-01

    Recent irradiation plants utilizing fuel elements are described. Criteria for optimizing such plants, evaluation of the plants realized so far, and applications for the facilities are discussed. (author)

  3. Elemental composition of human and animal milk

    International Nuclear Information System (INIS)

    Iyengar, G.V.

    1982-09-01

    A review is presented of the elemental composition of human and animal milk with special reference to trace elements determined through nuclear techniques, particularly neutron activation analysis (NAA). In the joint IAEA/WHO research project, 16 of the 24 elements under investigation have been analysed by NAA with the aid of advanced research nuclear reactors. Literature data are discussed and tabulated in 50 separate tables (one for each element) mainly for the period after 1950. Each table uses a standard format comprising 10 columns indicating (1) source of milk (e.g. human or animal), (2) status of the milk (colostrum, transitional or mature), (3) country of origin, (4) year of data publication, (5) mean concentration, (6) range of single values or standard deviation of the mean, (7) number of samples analysed, (8) analytical technique employed, (9) literature source of the data, and (10) relevant remarks, if any. The most abundant data refer to the minor elements Ca, Cl, K, Mg, N, Na, P and S and to the trace elements Cu, Fe and Zn. Fewer data are available for Cd, Hg, I, Mn, Pb and Se. For the remaining elements, including such biologically important trace elements as As, Co, Cr, F, Mo, Ni, Si and Sn, very few reliable data so far appear to exist

  4. Trace element metabolism in man and animals

    International Nuclear Information System (INIS)

    Kirchgessner, M.

    1977-01-01

    Uptake, distribution, storage, excretion of different trace elements and resulting disturbances are investigated in blood and organs in animal experiments and in human diagnostics with the aid of radioisotopes. Apart from this, untritional disturbances are mentioned. Finally, future aspects of physiological trace element examinations are listed. (AJ) 891 AJ [de

  5. System for assembling nuclear fuel elements

    International Nuclear Information System (INIS)

    1980-01-01

    An automatic system is described for assembling nuclear fuel elements, in particular those employing mixed oxide fuels. The system includes a sealing mechanism which allows movement during the assembling of the fuel element along the assembly stations without excessive release of contaminants. (U.K.)

  6. Trace element analysis of soy sauce

    International Nuclear Information System (INIS)

    Tomita, Michio; Haruyama, Yoichi; Saito, Manabu

    1994-01-01

    Trace elements in soy sauce have been measured by means of in-air PIXE. Six kinds of trace elements were detected, such as Mu, Fe, Ni, Zn, Cu and Br. Concentrations of Mn, Fe, Zn and Br which were observed in all samples, have been determined. Each analyzed sample contained considerable amount of bromine about 160 ppm. (author)

  7. MODERATOR ELEMENTS FOR UNIFORM POWER NUCLEAR REACTOR

    Science.gov (United States)

    Balent, R.

    1963-03-12

    This patent describes a method of obtaining a flatter flux and more uniform power generation across the core of a nuclear reactor. The method comprises using moderator elements having differing moderating strength. The elements have an increasing amount of the better moderating material as a function of radial and/or axial distance from the reactor core center. (AEC)

  8. Non-linear finite element modeling

    DEFF Research Database (Denmark)

    Mikkelsen, Lars Pilgaard

    The note is written for courses in "Non-linear finite element method". The note has been used by the author teaching non-linear finite element modeling at Civil Engineering at Aalborg University, Computational Mechanics at Aalborg University Esbjerg, Structural Engineering at the University...

  9. On elastic structural elements for nuclear reactors

    International Nuclear Information System (INIS)

    Povolo, F.

    1978-03-01

    The in-pile stress-relaxation behaviour of materials usually employed for the elastic structural elements, in nuclear reactors, is critically reviewed and the results are compared with those obtained in commercial zirconium alloys irradiated under similar conditions. Finally, it is shown that, under certain conditions, some zirconium alloys may be used as an alternative material for these structural elements. (orig.) [de

  10. Octupole correlations in the heavy elements

    International Nuclear Information System (INIS)

    Chasman, R.R.

    1986-01-01

    The effects of octupole correlations on the nuclear structure of the heavy elements are discussed. The cluster model description of the heavy elements is analyzed. The relevance of 2 6 -pole deformation and fast El transitions to an octupole model is considered. 30 refs., 21 figs., 1 tab

  11. Elemental Etymology: What's in a Name?

    Science.gov (United States)

    Ball, David W.

    1985-01-01

    Examines the origin of the names (or etymologies) of the chemical elements. Includes tables listing elements: (1) with names of obscure origin; (2) named for colors; (3) named after real or mythical people; (4) named after places; (5) named after heavenly bodies; and (6) having names of miscellaneous origin. (JN)

  12. Chilean fuel elements fabrication progress report

    International Nuclear Information System (INIS)

    Baeza, J.; Contreras, H.; Chavez, J.; Klein, J.; Mansilla, R.; Marin, J.; Medina, R.

    1993-01-01

    Due to HEU-LEU core conversion necessity for the Chilean MTR reactors, the Fuel Elements Plant is being implemented to LEU nuclear fuel elements fabrication. A glove box line for powder-compact processing designed at CCHEN, which supposed to operate under an automatic control system, is at present under initial tests. Results of first natural uranium fuel plates manufacturing runs are shown

  13. Nonlinear finite element modeling of corrugated board

    Science.gov (United States)

    A. C. Gilchrist; J. C. Suhling; T. J. Urbanik

    1999-01-01

    In this research, an investigation on the mechanical behavior of corrugated board has been performed using finite element analysis. Numerical finite element models for corrugated board geometries have been created and executed. Both geometric (large deformation) and material nonlinearities were included in the models. The analyses were performed using the commercial...

  14. Trace elements in relation to cardiovascular diseases

    Energy Technology Data Exchange (ETDEWEB)

    Masironi, R [World Health Organization, Cardiovascular Diseases Unit, Geneva (Switzerland); Parr, R M [International Atomic Energy Agency, Medical Applications Section, Vienna (Austria)

    1973-07-01

    For the past four years the World Health Organization and the International Atomic Energy-Agency have been jointly coordinating investigations at an international level on the role possibly played by stable trace elements in the aetiology of cardiovascular diseases, and the use of nuclear techniques in studying these elements. (author)

  15. The Superheavy Elements and Anti-Gravity

    International Nuclear Information System (INIS)

    Anastasovski, Petar K.

    2004-01-01

    The essence of any propulsion concept is to overcome gravity. Anti-gravity is a natural means to achieve this. Thus, the technology to pursue anti-gravity, by using superheavy elements, may provide a new propulsion paradigm. The theory of superluminal relativity provides a hypothesis for existence of elements with atomic number up to Z = 145, some of which may possess anti-gravity properties. Analysis results show that curved space-time exists demonstrating both gravitic and anti-gravitic properties not only around nuclei but inside the nuclei as well. Two groups of elements (Z < 64 and 63 < Z <145) exist that demonstrate these capabilities. The nuclei of the first group of elements have the masses with only the property of gravity. The nuclei of the elements of the second group have the masses with both properties: gravity and anti-gravity in two different ranges of curved space-time around the nuclei.. The hypothetical element with Z = 145 is the unique among all elements whose nucleus has only anti-gravity property. It is proposed that this element be named Hawking, in honour of Stephen W. Hawking

  16. Phytochemical screening, proximate and elemental analysis of ...

    African Journals Online (AJOL)

    Citrus sinensis was screened for its phytochemical composition and was evaluated for the proximate and elemental analysis. The phytochemical analysis indicated the presence of reducing sugar, saponins, cardiac glycosides, tannins and flavonoids. The elemental analysis indicated the presence of the following mineral ...

  17. Finite element analysis of tibial fractures

    DEFF Research Database (Denmark)

    Wong, Christian Nai En; Mikkelsen, Mikkel Peter W; Hansen, Leif Berner

    2010-01-01

    Project. The data consisted of 21,219 3D elements with a cortical shell and a trabecular core. Three types of load of torsion, a direct lateral load and axial compression were applied. RESULTS: The finite element linear static analysis resulted in relevant fracture localizations and indicated relevant...

  18. The Elements Go to the Movies

    Science.gov (United States)

    Taarea, Dina; Thomas, Nicholas C.

    2010-01-01

    The names of many common elements have found their way into the titles of feature films: gold, silver, iron, copper, and lead, for example, appear in hundreds of movie titles. Surprisingly, perhaps, more than two dozen other elements, including iodine, cadmium, zinc, calcium, argon, chlorine, and others, have also been used in film titles. In this…

  19. Chemical identification and properties of element 112

    Czech Academy of Sciences Publication Activity Database

    Yakushev, AB.; Zvára, Ivo; Oganessian, YT.; Belozerov, AV.; Dmitriev, S. N.; Eichler, B.; Hubener, S.; Sokol, EA.; Turler, A.; Yeremin, AV.; Buklanov, GV.; Chelnokov, ML.; Chepigin, VI.; Gorshkov, VA.; Gulyaev, AV.; Lebedev, VY.; Malyshev, ON.; Popeko, AG.; Soverna, S.; Szeglowski, Z.; Timokhin, SN.; Tretyakova, SP.; Vasko, VM.; Itkis, MG.

    2003-01-01

    Roč. 91, č. 8 (2003), s. 433-439 ISSN 0033-8230 Institutional research plan: CEZ:AV0Z1048901 Keywords : element 112 * superheavy elements * transactinoids Subject RIV: CH - Nuclear ; Quantum Chemistry Impact factor: 0.940, year: 2003

  20. Push piece for spent fuel elements magazine

    International Nuclear Information System (INIS)

    Griveau, R.; Kerlau, D.; Tucoulat, D.; Colas, J.; Pellier, R.

    1989-01-01

    The push piece permits the displacement of little section elements in a magazine of high section. At the end of cut, the push piece leans its flank against an auxiliary blank holder and the element is pushed by a paddle, the push piece being immobilized [fr

  1. Soils element history, sampling, analyses, and recommendations

    International Nuclear Information System (INIS)

    Fowler, E.B.; Essington, E.H.

    1976-01-01

    A five year history of the Soils Element of the Nevada Applied Ecology Group (NAEG) is presented. Major projects are reviewed. Emphasis is placed on mound studies and profile studies for the period March 1, 1975, through February 1, 1976. A series of recommendations is made relative to extensions of past efforts of the Soils Element of the NAEG

  2. Structural elements for fast-neutron reactors

    International Nuclear Information System (INIS)

    Blin, J.C.; Sainfort, Gerard; Silvent, Alain; Silvestres, Georges.

    1974-01-01

    These elements are characterized in that they are obtained from a nickel-alloy and at least a material M, selected from the group comprising iron and silicon, in proportions, by weight, such that irradiation by fast neutrons leads to the generation of Ni 3 -M with no noticeable swelling of said elements. This can be applied to fuel assembly cladding [fr

  3. Why do probabilistic finite element analysis ?

    CERN Document Server

    Thacker, Ben H

    2008-01-01

    The intention of this book is to provide an introduction to performing probabilistic finite element analysis. As a short guideline, the objective is to inform the reader of the use, benefits and issues associated with performing probabilistic finite element analysis without excessive theory or mathematical detail.

  4. Rare Earth Elements Distribution in Beryl

    International Nuclear Information System (INIS)

    El Gawish, H.K.; Nada, N.; Ghaly, W.A.; Helal, A.I.

    2012-01-01

    Laser ablation method is applied to a double focusing inductively coupled plasma mass spectrometer to determine the rare earth element distribution in some selected beryl samples. White, green and blue beryl samples are selected from the Egyptian eastern desert. Distributions of chondrite- normalized plot for the rare earth element in the selected beryl samples are investigated

  5. Quadrature representation of finite element variational forms

    DEFF Research Database (Denmark)

    Ølgaard, Kristian Breum; Wells, Garth N.

    2012-01-01

    This chapter addresses the conventional run-time quadrature approach for the numerical integration of local element tensors associated with finite element variational forms, and in particular automated optimizations that can be performed to reduce the number of floating point operations...

  6. A finite element for plates and shells

    International Nuclear Information System (INIS)

    Muller, A.; Feijoo, R.A.; Bevilacqua, L.

    1981-08-01

    A simple triangular finite element for plates and shells, is presented. Since the rotation fields are assumed independent of the displacement fields, the element allows one to solve thick shells problems. In the limit for thin shell, the Kirchoff-Love hypothesis is automatically satisfied, thus enlarging its range of application. (Author) [pt

  7. Trace elements as paradigms of developmental neurotoxicants

    DEFF Research Database (Denmark)

    Grandjean, Philippe; Herz, Katherine T

    2015-01-01

    Trace elements have contributed unique insights into developmental neurotoxicity and serve as paradigms for such adverse effects. Many trace elements are retained in the body for long periods and can be easily measured to assess exposure by inexpensive analytical methods that became available...

  8. Environmental chemistry of the actinide elements

    International Nuclear Information System (INIS)

    Rao Linfeng

    1986-01-01

    The environmental chemistry of the actinide elements is a new branch of science developing with the application of nuclear energy on a larger and larger scale. Various aspects of the environmental chemistry of the actinide elements are briefly reviewed in this paper, such as its significance in the nuclear waste disposal, its coverage of research fields and possible directions for future study

  9. Finite-Element Software for Conceptual Design

    DEFF Research Database (Denmark)

    Lindemann, J.; Sandberg, G.; Damkilde, Lars

    2010-01-01

    and research. Forcepad is an effort to provide a conceptual design and teaching tool in a finite-element software package. Forcepad is a two-dimensional finite-element application based on the same conceptual model as image editing applications such as Adobe Photoshop or Microsoft Paint. Instead of using...

  10. Just-in-time elements and benefits

    CERN Document Server

    García-Alcaraz, Jorge Luis

    2016-01-01

    This book reports the elements required for implementing Just in Time (JIT) technique in companies. The main reasons for low implementation processes and the main benefits from the successful implementation of them are highlighted in this book. Structural equation models are presented to help identify the essential elements in JIT.

  11. Chemistry gains a new element: Z=106

    International Nuclear Information System (INIS)

    Gaeggeler, H.W.; Eichler, B.; Tuerler, A.

    1997-01-01

    Even though 112 chemical elements are presently known, for elements with atomic numbers above 105 only nuclear decay properties have been investigated so far. Such data allow to proof the existence of a given nuclide, but they do not yield any information with respect to the position of a chemical element in the Periodic Table. We have performed ever first chemical investigations of element 106. According to the Periodic Table element 106 should be a member of group 6, having similar chemical properties as W, Mo and Cr. Two different techniques were applied to separate and identify element 106: a liquid chromatography system (ARCA = Automated Rapid Chemistry Apparatus) and a continuous isothermal chromatography device (OLGA = On-Line Gaschemistry Apparatus). With ARCA about 5'000 separations on small cation exchange columns (Aminex A6) with a 0.1 M HNO 3 /5.10 -4 M Hf solution were performed and with OLGA the gas adsorption behaviour of oxychlorides on quartz columns using Cl 2 /SOCl 2 /O 2 as reactive gas were studied. On the basis of only ten detected atoms, it was possible to proof that element 106 forms complexes which are eluted at positions similar to those of Mo and W. In addition, in the gas phase element 106 forms oxychlorides of lower volatility compared to those of Mo and W. (author) 1 ref

  12. Modelling drawbeads with finite elements and verification

    NARCIS (Netherlands)

    Carleer, B.D.; Carleer, B.D.; Vreede, P.T.; Vreede, P.T.; Louwes, M.F.M.; Louwes, M.F.M.; Huetink, Han

    1994-01-01

    Drawbeads are commonly used in deep drawing processes to control the flow of the blank during the forming operation. In finite element simulations of deep drawing the drawbead geometries are seldom included because of the small radii; because of these small radii a very large number of elements is

  13. Rovibrational matrix elements of the multipole moments

    Indian Academy of Sciences (India)

    Rovibrational matrix elements of the multipole moments ℓ up to rank 10 and of the linear polarizability of the H2 molecule in the condensed phase have been computed taking into account the effect of the intermolecular potential. Comparison with gas phase matrix elements shows that the effect of solid state interactions is ...

  14. Conceptual problems with remote element synthesis

    Indian Academy of Sciences (India)

    The notion of remote element synthesis has recently been modified to explain the presence of nucleogenetic isotopic anomalies and decay products of short-lived nuclides by injection of a small amount of exotic nucleogenetic material. Even with this modification, remote element synthesis seems inconsistent with the ...

  15. Biological trace element measurements using synchrotron radiation

    International Nuclear Information System (INIS)

    Giauque, R.D.; Jaklevic, J.M.; Thompson, A.C.

    1985-07-01

    The feasibility of performing x-ray fluorescence trace element determinations at concentrations substantially below the ppM level for biological materials is demonstrated. Conditions for achieving optimum sensitivity were ascertained. Results achieved for five standard reference materials were, in most cases, in excellent agreement with listed values. Minimum detectable limits of 20 ppM were measured for most elements

  16. Trace Elements in Human Tooth Enamel

    Energy Technology Data Exchange (ETDEWEB)

    Nixon, G. S. [Turner Dental School, University Of Manchester, Manchester (United Kingdom); Smith, H.; Livingston, H. D. [Department of Forensic Medicine, University Of Glasgow, Glasgow (United Kingdom)

    1967-10-15

    The trace elements are considered to play a role in the resistance of teeth to dental caries. The exact mechanism by which they act has not yet been fully established. Estimations of trace elements have been undertaken in sound human teeth. By means of activation analysis it has been possible to determine trace element concentrations in different layers of enamel in the same tooth. The concentrations of the following elements have been determined: arsenic, antimony, copper, zinc, manganese, mercury, molybdenum and vanadium. The distribution of trace elements in enamel varies from those with a narrow range, such as manganese, to those with a broad range, such as antimony. The elements present in the broad range are considered to be non-essential and their presence is thought to result from a chance incorporation into the enamel. Those in the narrow range appear to be essential trace elements and are present in amounts which do not vary unduly from other body tissues. Only manganese and zinc were found in higher concentrations in the surface layer of enamel compared with the inner layers. The importance of the concentration of trace elements on this surface layer of enamel is emphasized as this layer is the site of the first attack by the carious process. (author)

  17. Transuranic element behavior in soils and plants

    International Nuclear Information System (INIS)

    Wildung, R.E.

    1982-01-01

    The principal objective of this study is to define soil, plant, and foliar interaction processes that influence the availability of transuranic elements to agricultural plants and animals as a basis for improved modeling and dose-assessment. Major areas of emphasis are: (1) soil and soil-microbial processes that influence the concentration and form of transuranic elements in soil solutions and availability to the plant root with time; (2) deposition and plant interception of airborne submicronic particles containing transuranic elements and their susceptibility to leaching; (3) plant processes that influence transport across plant root membrane and foliar surfaces, as well as the form and sites of deposition of transuranic elements in mature plants; and (4) the integrated effect of soil and plant processes on transuranic element availability to, and form in, animals that consume plants

  18. Element 74, the Wolfram Versus Tungsten Controversy

    Energy Technology Data Exchange (ETDEWEB)

    Holden,N.E.

    2008-08-11

    Two and a quarter centuries ago, a heavy mineral ore was found which was thought to contain a new chemical element called heavy stone (or tungsten in Swedish). A few years later, the metal was separated from its oxide and the new element (Z=74) was called wolfram. Over the years since that time, both the names wolfram and tungsten were attached to this element in various countries. Sixty years ago, IUPAC chose wolfram as the official name for the element. A few years later, under pressure from the press in the USA, the alternative name tungsten was also allowed by IUPAC. Now the original, official name 'wolfram' has been deleted by IUPAC as one of the two alternate names for the element. The history of this controversy is described here.

  19. Verification of Orthogrid Finite Element Modeling Techniques

    Science.gov (United States)

    Steeve, B. E.

    1996-01-01

    The stress analysis of orthogrid structures, specifically with I-beam sections, is regularly performed using finite elements. Various modeling techniques are often used to simplify the modeling process but still adequately capture the actual hardware behavior. The accuracy of such 'Oshort cutso' is sometimes in question. This report compares three modeling techniques to actual test results from a loaded orthogrid panel. The finite element models include a beam, shell, and mixed beam and shell element model. Results show that the shell element model performs the best, but that the simpler beam and beam and shell element models provide reasonable to conservative results for a stress analysis. When deflection and stiffness is critical, it is important to capture the effect of the orthogrid nodes in the model.

  20. Experimental research of fuel element reliability

    International Nuclear Information System (INIS)

    Cech, B.; Novak, J.; Chamrad, B.

    1980-01-01

    The rate and extent of the damage of the can integrity for fission products is the basic criterion of reliability. The extent of damage is measurable by the fission product leakage into the reactor coolant circuit. An analysis is made of the causes of the fuel element can damage and a model is proposed for testing fuel element reliability. Special experiments should be carried out to assess partial processes, such as heat transfer and fuel element surface temperature, fission gas liberation and pressure changes inside the element, corrosion weakening of the can wall, can deformation as a result of mechanical interactions. The irradiation probe for reliability testing of fuel elements is described. (M.S.)

  1. On the reliability of finite element solutions

    International Nuclear Information System (INIS)

    Prasad, K.S.R.K.

    1975-01-01

    The extent of reliability of the finite element method for analysis of nuclear reactor structures, and that of reactor vessels in particular and the need for the engineer to guard against the pitfalls that may arise out of both physical and mathematical models have been high-lighted. A systematic way of checking the model to obtain reasonably accurate solutions is presented. Quite often sophisticated elements are suggested for specific design and stress concentration problems. The desirability or otherwise of these elements, their scope and utility vis-a-vis the use of large stack of conventional elements are discussed from the view point of stress analysts. The methods of obtaining a check on the reliability of the finite element solutions either through modelling changes or an extrapolation technique are discussed. (author)

  2. Concentration of stable elements in food products

    International Nuclear Information System (INIS)

    Montford, M.A.; Shank, K.E.; Hendricks, C.; Oakes, T.W.

    1980-01-01

    Food samples were taken from commercial markets and analyzed for stable element content. The concentrations of most stable elements (Ag, Al, As, Au, Ba, Br, Ca, Ce, Cl, Co, Cr, Cs, Cu, Fe, Hf, I, K, La, Mg, Mn, Mo, Na, Rb, Sb, Sc, Se, Sr, Ta, Th, Ti, V, Zn, Zr) were determined using multiple-element neutron activation analysis, while the concentrations of other elements (Cd, Hg, Ni, Pb) were determined using atomic absorption. The relevance of the concentrations found are noted in relation to other literature values. An earlier study was extended to include the determination of the concentration of stable elements in home-grown products in the vicinity of the Oak Ridge National Laboratory. Comparisons between the commercial and local food-stuff values are discussed

  3. International experience in conditioning spent fuel elements

    International Nuclear Information System (INIS)

    Ashton, P.

    1991-04-01

    The purpose of this report is to compile and present in a clear form international experience (USA, Canada, Sweden, FRG, UK, Japan, Switzerland) gained to date in conditioning spent fuel elements. The term conditioning is here taken to mean the handling and packaging of spent fuel elements for short- or long-term storage or final disposal. Plants of a varying nature fall within this scope, both in terms of the type of fuel element treated and the plant purpose eg. experimental or production plant. Emphasis is given to plants which bear some similarity to the concept developed in Germany for direct disposal of spent fuel elements. Worldwide, however, relatively few conditioning plants are in existence or have been conceived. Hence additional plants have been included where aspects of the experience gained are also of relevance eg. plants developed for the consolidation of spent fuel elements. (orig./HP) [de

  4. Automated rapid chemistry in heavy element research

    International Nuclear Information System (INIS)

    Schaedel, M.

    1994-01-01

    With the increasingly short half-lives of the heavy element isotopes in the transition region from the heaviest actinides to the transactinide elements the demand for automated rapid chemistry techniques is also increasing. Separation times of significantly less than one minute, high chemical yields, high repetition rates, and an adequate detection system are prerequisites for many successful experiments in this field. The development of techniques for separations in the gas phase and in the aqueous phase for applications of chemical or nuclear studies of the heaviest elements are briefly outlined. Typical examples of results obtained with automated techniques are presented for studies up to element 105, especially those obtained with the Automated Rapid Chemistry Apparatus, ARCA. The prospects to investigate the properties of even heavier elements with chemical techniques are discussed

  5. Pragmatic trial design elements showed a different impact on trial interpretation and feasibility than explanatory elements

    NARCIS (Netherlands)

    Nieuwenhuis, Joost B.; Irving, Elaine; Oude Rengerink, Katrien; Lloyd, Emily; Goetz, Iris; Grobbee, Diederick E.; Stolk, Pieter; Groenwold, Rolf H H; Zuidgeest, Mira G P

    2016-01-01

    OBJECTIVE: To illustrate how pragmatic trial design elements, or inserting explanatory trial elements in pragmatic trials affect validity, generalizability, precision and operational feasibility. STUDY DESIGN AND SETTING: From illustrative examples identified through the IMI Get Real Consortium, we

  6. 7 CFR 29.2351 - Elements of quality and degrees of each element.

    Science.gov (United States)

    2010-01-01

    ... designated as elements of quality. The range within each element is expressed by words or terms designated as... Moderate Deep. Width Narrow Normal Spready Broad. Uniformity. Expressed in percentages. Injury tolerance. Expressed in percentages. sizes ...

  7. 7 CFR 29.2601 - Elements of quality and degrees of each element.

    Science.gov (United States)

    2010-01-01

    ... designated as elements of quality. The range within each element is expressed by words or terms designated as... Moderate Deep. Width Narrow Normal Spready. Uniformity......Expressed in percentages. Injury tolerance...Expressed in percentages. Sizes ...

  8. EDITORIAL: King of the elements? King of the elements?

    Science.gov (United States)

    Demming, Anna

    2010-07-01

    Throughout the history of science, carbon-based research has played a defining role in the development of a range of fundamental and technological fields. It was used in Avagadro's definition of the mole in the early 18th century, it provides the 'backbone' of molecules in organic compounds, and in the environmental debate currently raging in the press and international government discussions, the 'carbon footprint' has become the metric of our species' impact on our planet. Also in nanotechnology, with the discovery of various wonder materials, carbon is once again asserting its claim as king of the elements. Until the 1980s the only known forms of carbon were diamond, graphite and amorphous carbon, as in soot or charcoal. In 1985 Robert Curl, Harold Kroto and Richard Smalley reported the existence of fullerenes, spherical structures comprising hexagonal carbon rings [1], work for which they won the Nobel Prize for Chemistry in 1996 [2]. The discovery of fullerenes was followed in 1991 by Sumio Ijima with the discovery of rolled graphite sheets, the carbon nanotube [3]. The discovery of these novel carbon nanostructures inspired researchers in a range of fields, largely as a result of the extraordinary capacity for investigations of these structures to reveal ever more intriguing properties. One of the fascinating properties attributed to carbon nanotubes is their phenomenal strength, with a Young's modulus of single walled carbon nanotubes approaching a terapascal [4]. Ingenious methods of harnessing this strength have since been developed, including bucky paper, a term used to refer to a mat of randomly self-entangled carbon nanotubes. Steven Crannford and Markus Buehler have recently reported a novel computational technique for probing the mechanical properties of these structures and show that the Young's modulus of bucky paper can be tuned by manipulation of the carbon nanotube type and density [5]. The electrical properties of carbon nanotubes, which depend

  9. Restraint system for core elements of a reactor core

    International Nuclear Information System (INIS)

    Class, G.

    1975-01-01

    In a nuclear reactor, a core element bundle formed of a plurality of side-by-side arranged core elements is surrounded by restraining elements that exert a radially inwardly directly restraining force generating friction forces between the core elements in a restraining plane that is transverse to the core element axes. The adjoining core elements are in rolling contact with one another in the restraining plane by virtue of rolling-type bearing elements supported in the core elements. (Official Gazette)

  10. Burnup measurements of leader fuel elements

    International Nuclear Information System (INIS)

    Henriquez, C; Navarro, G; Pereda, C

    2000-01-01

    Some time ago the CCHEN authorities decided to produce a set of 50 low enrichment fuel elements. These elements were produced in the PEC (Fuel Elements Plant), located at CCHEN offices in Lo Aguirre. These new fuel elements have basically the same geometrical characteristics of previous ones, which were British and made with raw material from the U.S. The principal differences between our fuel elements and the British ones is the density of fissile material, U-235, which was increased to compensate the reduction in enrichment. Last year, the Fuel Elements Plant (PEC) delivered the shipment's first four (4) fuel elements, called leaders, to the RECH1. A test element was delivered too, and the complete set was introduced into the reactor's nucleus, following the normal routine, but performing a special follow-up on their behavior inside the nucleus. This experimental element has only one outside fuel plate, and the remaining (15) structural plates are aluminum. In order to study the burnup, the test element was taken out of the nucleus, in mid- November 1999, and left to decay until June 2000, when it was moved to the laboratory (High Activity Cell), to start the burnup measurements, with a gamma spectroscopy system. This work aims to show the results of these measurements and in addition to meet the following objectives: (a) Visual test of the plate's general condition; (b) Sipping test of fission products; (c) Study of burn-up distribution in the plate; (d) Check and improve the calculus algorithm; (e) Comparison of the results obtained from the spectroscopy with the ones from neutron calculus

  11. Multi Elemental Study Using Prompt Gamma Technique

    International Nuclear Information System (INIS)

    Normanshah Dahing; Muhamad Samudi Yasir; Normanshah Dahing; Hanafi Ithnin; Mohd Fitri Abdul Rahman; Hearie Hassan

    2016-01-01

    In this study, principle of prompt gamma neutron activation analysis has been used as a technique to determine the elements in the sample. The system consists of collimated isotopic neutron source, Cf-252 with HPGe detector and Multichannel Analysis (MCA). Concrete with size of 10x10x10 cm 3 and 15x15x15 cm 3 were analysed as sample. When neutrons enter and interact with elements in the concrete, the neutron capture reaction will occur and produce characteristic prompt gamma ray of the elements. The preliminary result of this study demonstrate the major element in the concrete was determined such as Si, Mg, Ca, Al, Fe and H as well as others element, such as Cl by analysis the gamma ray lines respectively. The results obtained were compared with computer simulation, NAA and XRF as a part of reference and validation. The potential and the capability of neutron induced prompt gamma as tool for multi elemental analysis qualitatively to identify the elements present in the concrete sample discussed. (author)

  12. Investigation of trace elements in coal

    International Nuclear Information System (INIS)

    Gluskoter, H.J.; Cahil, R.A.; Miller, W.G.; Ruch, R.R.; Shimp, N.F.

    1976-01-01

    A variety of coal samples is currently being extensively analyzed for constituents, including many trace elements, at the Illinois State Geological Survey. The samples include whole coals, washed coals, and bench samples. Among the many determinations made on each sample are analyses for approximately 60 elements, almost twice the number of elements previously determined. The increase is in part the result of the addition of instrumental neutron activation analysis (INAA) equipment to the laboratory. Twenty-five samples of Herrin (No. 6) Coal that had been analyzed previously were subjected to INAA analysis and were found to include Ba, Ce, Cs, Dy, Eu, Au, Hf, I, In, La, Lu, Rb, Sm, Sc, Ag, Sr, Ta, Tb, Th, W, U, and Yb, none of which were reported by previous techniques. These elements generally are present in very small amounts and, with the exception of barium, exhibit no wide range in concentration. The rare earth elements are among those having the narrowest ranges. Wide variations in element content have been observed in bench sets of coals (samples of vertical segments of the coal seam). Many elements, notably germanium, are concentrated at the top and/or bottom of the seam, the high concentrations of Ge being found there in all four bench sets analyzed to date

  13. Photoshop Elements 5 The Missing Manual

    CERN Document Server

    Brundage, Barbara

    2006-01-01

    Anyone still think that Adobe Photoshop Elements is a toy version of the real thing? As the most popular photo-editing program on the market, Photoshop Elements not only has Photoshop's marvelous powers, but also has capabilities the mothership lacks. Each new version includes more tools designed specifically for today's consumer digital photo enthusiasts. The latest edition, Photoshop Elements 5, solidifies the reputation of this superb and inexpensive product with new scrapbook features, a link to online photo services, and many other improvements. In fact, there's so much to Photoshop Ele

  14. Trace element analysis in soy sauce. 2

    International Nuclear Information System (INIS)

    Haruyama, Yoichi; Saito, Manabu; Tomita, Michio; Yoshida, Koji.

    1994-01-01

    Trace elements in four kinds of soybean and three kinds of salt have been measured by means of in-air PIXE. In soybeans, which were made in Japan, America, Canada and China, six kinds of trace elements were detected, such as Mn, Fe, Ni, Cu, Zn and Br. The concentration of these elements varied depending on the place they were made. American soybean showed characteristic feature compared with other soybeans. As to the bromine concentration, American soybean contains ten times as much as Japanese one. In salts Br and Sr were detected. (author)

  15. Use of SCC in Prefabricated Concrete Elements

    DEFF Research Database (Denmark)

    Thrane, Lars Nyholm; Lauritsen, Ib

    2004-01-01

    This paper presents observations made on the use of self-compacting concrete for pre-cast elements at Byggebjerg Beton A/S during the last 3 years. The elements include L- and sandwich elements and are mainly produced for agriculture purposes. In general, the flow properties and air content...... of the concrete to achieve a good surface quality with a limited number of blowholes. For horizontal castings it is important to keep the concrete flowing to avoid casting joints. Blocking is avoided by using the right type of spacers and a maximum size aggregate of 8mm. However, if the concrete has to flow over...

  16. MRT fuel element inspection at Dounreay

    Energy Technology Data Exchange (ETDEWEB)

    Gibson, J.

    1997-08-01

    To ensure that their production and inspection processes are performed in an acceptable manner, ie. auditable and traceable, the MTR Fuel Element Fabrication Plant at Dounreay operates to a documented quality system. This quality system, together with the fuel element manufacturing and inspection operations, has been independently certified to ISO9002-1987, EN29002-1987 and BS5750:Pt2:1987 by Lloyd`s Register Quality Assurance Limited (LRQA). This certification also provides dual accreditation to the relevant German, Dutch and Australian certification bodies. This paper briefly describes the quality system, together with the various inspection stages involved in the manufacture of MTR fuel elements at Dounreay.

  17. Unification of fuel elements for research reactors

    International Nuclear Information System (INIS)

    Vatulyn, A.V.; Stetskyi, Y.A.; Dobrikova, I.V.

    1997-01-01

    To the purpose of fuel elements unification the possibility of rod fuel assembly (FA) using in the cores of research reactors have been considered in this paper. The calculation results of geometric, hydraulic and thermotechnical parameters of rod assembly are submitted. Several designs of finned square fuel element and fuel assembly are proposed on base of analysis of rod FA characteristics in compare of tube ones. The fuel elements specimens and the model assembly are manufactured. The developed designs are the basis for further optimization after neutron-physical calculations of cores. (author)

  18. On the synthesis of new elements

    International Nuclear Information System (INIS)

    Hofmann, S.

    2003-01-01

    The nuclear shell model predicts that the next doubly magic shell-closure beyond 208 Pb is at a proton number between Z=114 and 126 and at a neutron number N=172 or 184. The outstanding aim of experimental investigations is the exploration of this region of spherical 'Superheavy Elements'. This article describes the experiments that were performed recently at the GSI SHIP. They resulted in an unambiguous identification of elements 110 to 112. They were negative so far in searching for elements 113, 116, and 118. The measured decay data are compared with theoretical predictions. Some aspects concerning the reaction mechanism are also presented. (orig.)

  19. Photoshop Elements 9 the missing manual

    CERN Document Server

    Brundage, Barbara

    2010-01-01

    Elements 9 offers much of Photoshop's power without the huge price tag. It's an ideal tool for most image-editing buffs -- including scrapbookers, photographers, and aspiring graphic artists. But Elements still doesn't come with a decent manual. This bestselling book will help you get the most out of the program, from the basics to advanced tips for both Windows and Mac. Quickly learn your way around. Customize Elements to suit your working style.Get to work right away. Import, organize, and make quick image fixes with ease.Retouch any image. Learn how to repair and restore your old and damag

  20. Trace elements in wild and orchard honeys

    Energy Technology Data Exchange (ETDEWEB)

    Almeida-Silva, M.; Canha, N.; Galinha, C.; Dung, H.M. [Instituto Tecnologico e Nuclear, URSN, E.N. 10, 2686-953 Sacavem (Portugal); Freitas, M.C., E-mail: cfreitas@itn.pt [Instituto Tecnologico e Nuclear, URSN, E.N. 10, 2686-953 Sacavem (Portugal); Sitoe, T. [Instituto Tecnologico e Nuclear, URSN, E.N. 10, 2686-953 Sacavem (Portugal)

    2011-11-15

    The present study aims the identification and quantification of trace elements in two types of honey samples: Orchard honey and Wild honey from mainland Portugal. Chemical elements content was assessed by Instrumental Neutron Activation Analysis (INAA). Concentrations were determinated for Ag, As, Br, Ca, Cl, Cs, Cu, Fe, K, La, Mg, Mn, Na, Rb, Sb, Sc, U, V and Zn. The nutritional values of both honey types were evaluated since this product contains some elements that are essential dietary nutrients for humans. Physical properties of the honey samples, such as electrical conductivy and pH, were assessed as well.

  1. Modeling beams with elements in phase space

    International Nuclear Information System (INIS)

    Nelson, E.M.

    1998-01-01

    Conventional particle codes represent beams as a collection of macroparticles. An alternative is to represent the beam as a collection of current carrying elements in phase space. While such a representation has limitations, it may be less noisy than a macroparticle model, and it may provide insights about the transport of space charge dominated beams which would otherwise be difficult to gain from macroparticle simulations. The phase space element model of a beam is described, and progress toward an implementation and difficulties with this implementation are discussed. A simulation of an axisymmetric beam using 1d elements in phase space is demonstrated

  2. The Superheavy Elements and Anti-Gravity

    Science.gov (United States)

    Anastasovski, Petar K.

    2004-02-01

    The essence of any propulsion concept is to overcome gravity. Anti-gravity is a natural means to achieve this. Thus, the technology to pursue anti-gravity, by using superheavy elements, may provide a new propulsion paradigm. The theory of superluminal relativity provides a hypothesis for existence of elements with atomic number up to Z = 145, some of which may possess anti-gravity properties. Analysis results show that curved space-time exists demonstrating both gravitic and anti-gravitic properties not only around nuclei but inside the nuclei as well. Two groups of elements (Z Hawking, in honour of Stephen W. Hawking.

  3. Shock buffer for nuclear control element assembly

    International Nuclear Information System (INIS)

    Bevilacqua, F.

    1977-01-01

    A shock buffer for a control element assembly in a nuclear reactor is described, comprising a piston and a cylinder. The piston is affixed to and extends upward from the control rod guide structure; the cylinder is supported by the upper portion of the control element assembly and is vertically oriented with open end downward for receiving the piston. Coolant liquid normally has free access to the cylinder. The piston displaces liquid from the cylinder when inserted, thereby decelerating the control element assembly near its lower extent of travel. (LL)

  4. Loads on pebble bed fuel elements

    Energy Technology Data Exchange (ETDEWEB)

    Teuchert, E.; Maly, V.

    1974-03-15

    A comparison is made of key parameters for multi-recycle pebbles and single-pass once-through (OTTO) pebbles. The parameters analyzed include heat transfer characteristics with burn-up, temperature profiles, power per element as a function of axial position in the core, and burn-up. For the OTTO-scheme, the comparisons addressed the use of the conventional fuel element and the advanced "shell ball" designed to reduce the peak fuel temperature in the center of the fuel element. All studies addressed the uranium-thorium fuel cycle.

  5. Taste as didactic element in food education

    DEFF Research Database (Denmark)

    Wistoft, Karen

    to their own expected learning, viewed in the light of three didactic elements: motivation, student participation and innovation in school. The method is a survey based on questionnaire among students (N= 769) who have participated a cooking competition that forms part of the subject Food Knowledge...... participation and innovation. The paper conclude that food education building on ‘hegemonic nutrition’ and traditional didactic elements do not necessarily condition the best learning outcome; food education that balance between traditional didactic elements and incorporate taste as a didactic approach enable...

  6. Nuclear responses in INTOR plasma stabilization elements

    International Nuclear Information System (INIS)

    Gohar, Y.; Gilligan, J.; Jung, J.; Mattas, R.F.; Miley, G.H.; Wiffen, F.W.; Yang, S.

    1985-01-01

    Nuclear responses in the plasma stabilization elements were studied in a parametric fashion as a part of the transient electromagnetics critical issue C of ETR/INTOR activity. The main responses are neutron fluence and radiation dose in the insulator material, induced resistivity and atomic displacement in the conductor material, nuclear heating and life analysis for the elements. Copper and aluminum conductors with either MgAl 2 O 4 or MgO insulating material were investigated. Radiation damage and life analysis for these elements were also discussed

  7. The origin of the chemical elements

    International Nuclear Information System (INIS)

    Tayler, R.J.

    1984-01-01

    The subject is discussed in relation to the composition of initially created matter and changes which have occurred during the life history of the universe, with particular reference to our galaxy and nearby galaxies. Headings are: observations of element abundances (stars, gas clouds in our own and nearby galaxies, hot gas in galaxy clusters, the solar system); the originally created matter (Big Bang theory and early nuclear reactions); processes changing observed composition (galactic evolution; nuclear fusion reactions in stellar interiors; chemical composition of a highly evolved massive star); supernovae (production of heavy elements); chemical evolution of the galaxy; production of very heavy elements (s process, r process). (U.K.)

  8. Electrical machine analysis using finite elements

    CERN Document Server

    Bianchi, Nicola

    2005-01-01

    OUTLINE OF ELECTROMAGNETIC FIELDSVector AnalysisElectromagnetic FieldsFundamental Equations SummaryReferencesBASIC PRINCIPLES OF FINITE ELEMENT METHODSIntroductionField Problems with Boundary ConditionsClassical Method for the Field Problem SolutionThe Classical Residual Method (Galerkin's Method)The Classical Variational Method (Rayleigh-Ritz's Method)The Finite Element MethodReferencesAPPLICATIONS OF THE FINITE ELEMENT METHOD TO TWO-DIMENSIONAL FIELDSIntroductionLinear Interpolation of the Function fApplication of the Variational MethodSimple Descriptions of Electromagnetic FieldsAppendix: I

  9. Requirements for materials of dispersion fuel elements

    International Nuclear Information System (INIS)

    Samojlov, A.G.; Kashtanov, A.I.; Volkov, V.S.

    1982-01-01

    Requirements for materials of dispersion fuel elements are considered. The necessity of structural and fissile materials compatibility at maximum permissible operation temperatures and temperatures arising in a fuel element during manufacture is pointed out. The fuel element structural material must be ductile, possess high mechanical strength minimum neutron absorption cross section, sufficient heat conductivity, good corrosion resistance in a coolant and radiation resistance. The fissile material must have high fissile isotope concentration, radiation resistance, high thermal conductivity, certain porosity high melting temperature must not change the composition under irradiation

  10. Photoshop Elements 10 The Missing Manual

    CERN Document Server

    Brundage, Barbara

    2011-01-01

    Elements 10 offers much of Photoshop's power without the huge price tag. It's a great tool for most image-editing buffs-whether you're a photographer, scrapbooker, or aspiring graphic artist. But Elements still doesn't come with a useful manual. This bestselling book helps you get the most out of the program, from the basics to advanced tips for both Windows and Mac users. The important stuff you need to know: Quickly learn your way around. Customize Elements to suit your working style.Get to work right away. Import, organize, and make quick image fixes with ease.Retouch any image. Learn how

  11. Recent research on the heavy transuranium elements

    International Nuclear Information System (INIS)

    Seaborg, G.T.

    1988-09-01

    This review is devoted to recent research (performed in the 1980s) on the heavy members of the group, defined as the transcurium elements (with a few references to related work on lighter elements). It covers the discovery of the three heaviest elements, the discovery of new isotopes, investigation of interesting decay properties of some previously known isotopes, investigations of some heavy ion reaction mechanisms in this region, and recent investigations of nuclear and chemical properties. It is not exhaustive in its coverage, is necessarily succinct, and inevitably places emphasis on those aspects with which the author is most familiar. 92 refs., 3 figs

  12. Finite element analysis of piezoelectric materials

    International Nuclear Information System (INIS)

    Lowrie, F.; Stewart, M.; Cain, M.; Gee, M.

    1999-01-01

    This guide is intended to help people wanting to do finite element analysis of piezoelectric materials by answering some of the questions that are peculiar to piezoelectric materials. The document is not intended as a complete beginners guide for finite element analysis in general as this is better dealt with by the individual software producers. The guide is based around the commercial package ANSYS as this is a popular package amongst piezoelectric material users, however much of the information will still be useful to users of other finite element codes. (author)

  13. Pyrometallurgical partitioning of uranium and transuranic elements from rare earth elements by electrorefining and reductive extraction

    International Nuclear Information System (INIS)

    Uozumi, Koichi; Kinoshita, Kensuke; Inoue, Tadashi; Storvick, T.S.; Krueger, C.L.; Nabelek, C.R.

    2001-01-01

    High-level liquid waste generated from PUREX reprocessing contains a small amount of transuranic elements, such as Np, Pu, Am, and Cm, with long-lived radioactivities. A pyrometallurgical partitioning process is being developed to recover transuranic elements from such waste. Small amounts of U contained in the high-level liquid waste are also recovered in the process. A key issue for developing the process is effective separation of U and the transuranic elements from the rare-earth elements, because the two elemental groups are chemically analogous. A series of process tests were carried out in the present study to demonstrate that a combination of electrorefining and reductive extraction is useful for separating U and transuranic elements from the rare-earth elements. The results indicate that 99% of U and each transuranic elements is recovered by the combination process as a product, and that the quantity of rare-earth elements contained in the product is smaller than the transuranic elements by weight. The overall mass balance of U and transuranic elements in the system ranged within the experimental errors assigned to sampling and analysis. (author)

  14. A flat triangular shell element with Loof nodes

    DEFF Research Database (Denmark)

    Poulsen, Peter Noe; Damkilde, Lars

    1996-01-01

    In the formulation of flat shell elements it is difficult to achieve inter-element compatibility between membrane and transverse displacements for non-coplanar elements. Many elements lack proper nodal degrees of freedom to model intersections making the assembly of elements troublesome. A flat...... triangular shell element is established by a combination of a new plate bending element DKTL and the well-known linear membrane strain element LST, and for this element the above-mentioned deficiences are avoided. The plate bending element DKTL is based on Discrete Kirchhoff Theory and Loof nodes. The nodal...

  15. A study on human hair element content as monitor for trace elements pollution in Eg

    International Nuclear Information System (INIS)

    Tadros, N.; Metwally, E.

    2004-01-01

    Trace element content in human is a suitable indicator of exposure to trace element pollutants. Concentration levels of 12 trace elements in human head hair samples collected from more than 23 individuals have been determined. The collected hair samples were classified into four groups collected from workers at nuclear research center and others far away from the center. Neutron activation analysis technique was used in the preset study. The data reported for trace elements content in different hair samples were discussed. Significant differences were observed for several elements levels. comparative studies demonstrated that the concentration of some elements in hair of exposed workers, are greater than those corresponding to non exposed workers. Also, there was no clear significant correlation between the elements content of different hair samples and the age of the donors

  16. Elemental Analysis and Biological Activities of Chrysophyllum ...

    African Journals Online (AJOL)

    Sapotaceae) Leaves. ... The plant material could be used as a source of important elements required for the body. In suitable form, the plant could be used in the prevention and treatment of dental caries, oxidative damage, obesity and cancer.

  17. APPLICATION OF PARAGRAPHEMICS ELEMENTS WHILE MAKING PACKAGING

    Directory of Open Access Journals (Sweden)

    V. V. Кuzmich

    2014-01-01

    Full Text Available The paper investigates mechanisms for creation of paragraphemics elements in printed advertisement on the packaging that attract attention to semantic characteristics of words and ensure a deeper understanding of the advertising text in comparison with superficial perception

  18. Data sheets on selected toxic elements

    International Nuclear Information System (INIS)

    Jaworski, J.F.

    1982-01-01

    The chemical elements considered in this volume have been identified as toxic to animal and vegetable life forms; however, these elements have not been studied as intensely as lead, mercury, cadmium, etc. Since, in most cases, existing data are insufficient to permit discussion and comparisons of relative quality, it was decided to present what quantitative data there are in as concise a manner as possible. The resulting data sheets present what is considered to be the best available information on the environmental levels, emissions and toxicology of these elements and some of their compounds. Reference is made to the article or review in which the datum appears and which may contain any discussion of the datum and the methods whereby it was obtained. Elements considered in this volume are antimony, barium, beryllium, bismuth, boron, cesium, gallium, germanium, indium, molybdenum, silver, tellurium, thallium, tin, uranium and zirconium

  19. Fission properties of the heaviest elements

    International Nuclear Information System (INIS)

    Moller, P.; Nix, R.

    1995-01-01

    The authors discuss fission properties of the heaviest elements. In particular they focus on stability with respect to spontaneous fission and on the prospects of extending the region of known nuclei beyond the peninsula of currently known nuclides

  20. Fuel elements handling device and method

    International Nuclear Information System (INIS)

    Jabsen, F.S.

    1976-01-01

    This invention relates to nuclear equipment and more particularly to methods and apparatus for the non-destructive inspection, manipulation, disassembly and assembly of reactor fuel elements and the like. (author)

  1. Characterization of transuranic elements at environmental levels

    International Nuclear Information System (INIS)

    Edgington, D.N.

    1981-01-01

    This paper summarizes current understanding of transuranic speciation in natural waters. Several predictive models describing the behaviour of these elements in both marine and fresh-water systems illustrate the importance of this information. (author)

  2. NEW RSW & Wall Coarse Mixed Element Grid

    Data.gov (United States)

    National Aeronautics and Space Administration — This is the Coarse Mixed Element Grid for the RSW with a viscous wall at the root. This grid is for a node-based unstructured solver. Quad Surface Faces= 9728 Tria...

  3. Business model elements impacting cloud computing adoption

    DEFF Research Database (Denmark)

    Bogataj, Kristina; Pucihar, Andreja; Sudzina, Frantisek

    The paper presents a proposed research framework for identification of business model elements impacting Cloud Computing Adoption. We provide a definition of main Cloud Computing characteristics, discuss previous findings on factors impacting Cloud Computing Adoption, and investigate technology a...

  4. Communications Stylebook: Graphics Guide: Anchor Elements

    Science.gov (United States)

    Certain elements must be displayed on the covers of all documents distributed to the public. These include an acceptable Agency identifier, such as the logo, the assigned publication number, and the EPA portal address.

  5. Computation of Asteroid Proper Elements: Recent Advances

    Science.gov (United States)

    Knežević, Z.

    2017-12-01

    The recent advances in computation of asteroid proper elements are briefly reviewed. Although not representing real breakthroughs in computation and stability assessment of proper elements, these advances can still be considered as important improvements offering solutions to some practical problems encountered in the past. The problem of getting unrealistic values of perihelion frequency for very low eccentricity orbits is solved by computing frequencies using the frequency-modified Fourier transform. The synthetic resonant proper elements adjusted to a given secular resonance helped to prove the existence of Astraea asteroid family. The preliminary assessment of stability with time of proper elements computed by means of the analytical theory provides a good indication of their poorer performance with respect to their synthetic counterparts, and advocates in favor of ceasing their regular maintenance; the final decision should, however, be taken on the basis of more comprehensive and reliable direct estimate of their individual and sample average deviations from constancy.

  6. Finite element methods a practical guide

    CERN Document Server

    Whiteley, Jonathan

    2017-01-01

    This book presents practical applications of the finite element method to general differential equations. The underlying strategy of deriving the finite element solution is introduced using linear ordinary differential equations, thus allowing the basic concepts of the finite element solution to be introduced without being obscured by the additional mathematical detail required when applying this technique to partial differential equations. The author generalizes the presented approach to partial differential equations which include nonlinearities. The book also includes variations of the finite element method such as different classes of meshes and basic functions. Practical application of the theory is emphasised, with development of all concepts leading ultimately to a description of their computational implementation illustrated using Matlab functions. The target audience primarily comprises applied researchers and practitioners in engineering, but the book may also be beneficial for graduate students.

  7. Anisotropic damping of Timoshenko beam elements

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, M.H.

    2001-05-01

    This report contains a description of a structural damping model for Timoshenko beam elements used in the aeroelastic code HawC developed at Risoe for modeling wind turbines. The model has been developed to enable modeling of turbine blades which often have different damping characteristics for flapwise, edgewise and torsional vibrations. The structural damping forces acting on the beam element are modeled by viscous damping described by an element damping matrix. The composition of this matrix is based on the element mass and stiffness matrices. It is shown how the coefficients for the mass and stiffness contributions can be calibrated to give the desired modal damping in the complete model of a blade. (au)

  8. Advanced finite element method in structural engineering

    CERN Document Server

    Long, Yu-Qiu; Long, Zhi-Fei

    2009-01-01

    This book systematically introduces the research work on the Finite Element Method completed over the past 25 years. Original theoretical achievements and their applications in the fields of structural engineering and computational mechanics are discussed.

  9. Early Childhood Physical Education. The Essential Elements.

    Science.gov (United States)

    Gabbard, Carl

    1988-01-01

    Details are presented regarding the essential elements of an effective early childhood physical education curriculum. Components include movement awareness, fundamental locomotor skills, fundamental nonlocomotor skills, fundamental manipulative skills, and health-related fitness. (CB)

  10. Analytic vibrational matrix elements for diatomic molecules

    International Nuclear Information System (INIS)

    Bouanich, J.P.; Ogilvie, J.F.; Tipping, R.H.

    1986-01-01

    The vibrational matrix elements and expectation values for a diatomic molecule, including the rotational dependence, are calculated for powers of the reduced displacement in terms of the parameters of the Dunham potential-energy function. (orig.)

  11. ANSYS mechanical APDL for finite element analysis

    CERN Document Server

    Thompson, Mary Kathryn

    2017-01-01

    ANSYS Mechanical APDL for Finite Element Analysis provides a hands-on introduction to engineering analysis using one of the most powerful commercial general purposes finite element programs on the market. Students will find a practical and integrated approach that combines finite element theory with best practices for developing, verifying, validating and interpreting the results of finite element models, while engineering professionals will appreciate the deep insight presented on the program's structure and behavior. Additional topics covered include an introduction to commands, input files, batch processing, and other advanced features in ANSYS. The book is written in a lecture/lab style, and each topic is supported by examples, exercises and suggestions for additional readings in the program documentation. Exercises gradually increase in difficulty and complexity, helping readers quickly gain confidence to independently use the program. This provides a solid foundation on which to build, preparing readers...

  12. Fractional Order Element Based Impedance Matching

    KAUST Repository

    Radwan, Ahmed Gomaa; Salama, Khaled N.; Shamim, Atif

    2014-01-01

    Disclosed are various embodiments of methods and systems related to fractional order element based impedance matching. In one embodiment, a method includes aligning a traditional Smith chart (|.alpha.|=1) with a fractional order Smith chart (|.alpha

  13. Review on Finite Element Method * ERHUNMWUN, ID ...

    African Journals Online (AJOL)

    ADOWIE PERE

    ABSTRACT: In this work, we have discussed what Finite Element Method (FEM) is, its historical development, advantages and ... residual procedures, are examples of the direct approach ... The paper centred on the "stiffness and deflection of ...

  14. Finite element bending behaviour of discretely delaminated ...

    African Journals Online (AJOL)

    user

    due to their light weight, high specific strength and stiffness properties. ... cylindrical shell roofs respectively using finite element method with centrally located .... where { }ε and { }γ are the direct and shear strains in midplane and { }κ denotes ...

  15. Elemental analysis with external-beam PIXE

    Science.gov (United States)

    Lin, E. K.; Wang, C. W.; Teng, P. K.; Huang, Y. M.; Chen, C. Y.

    1992-05-01

    A beamline system and experimental setup has been established for elemental analysis using PIXE with an external beam. Experiments for the study of the elemental composition of ancient Chinese potsherds (the Min and Ching ages) were performed. Continuum X-ray spectra from the samples bombarded by 3 MeV protons have been measured with a Si(Li) detector. From the analysis of PIXE data, the concentration of the main elements (Al, Si, K, and Ca) and of more than ten trace elements in the matrices and glazed surfaces were determined. Results for two different potsherds are presented, and those obtained from the glaze colorants are compared with the results of measurements on a Ching blue-and-white porcelain vase.

  16. Molecular genetics and epigenetics of CACTA elements

    KAUST Repository

    Fedoroff, Nina V.

    2013-01-01

    The CACTA transposons, so named for a highly conserved motif at element ends, comprise one of the most abundant superfamilies of Class 2 (cut-and-paste) plant transposons. CACTA transposons characteristically include subterminal sequences of several

  17. Analysis of light elements by PIGE

    International Nuclear Information System (INIS)

    Kim, Y. S.; Choi, H. W.; Kim, D. K.; Woo, H. J.; Kim, N. B.; Park, K. S.

    2000-01-01

    The PIGE (Proton Induced Gamma ray Emission) method was applied for the measurement of light elements Li - K. A test measurement has been performed for geological, biological, environmental and material samples by using a standard sample for each element. The measurement was performed for the two proton energies of 2.4 and 3.4 MeV, and 3.4MeV was found to yield better result for multielemental analysis. The result shows a fair agreement within 15% for all elements with standard values. The detection limits of Li, B, F and Na are less than 100 ppm, while those of the other elements are from a few hundred ppm to a few percents. (author)

  18. Environmental mineralogy - Understanding element behavior in ecosystems

    International Nuclear Information System (INIS)

    Brown Jr, G.E.; Calas, G.

    2011-01-01

    Environmental Mineralogy has developed over the past decade in response to the recognition that minerals are linked in many important ways with the global ecosystem. Minerals are the main repositories of the chemical elements in Earth's crust and thus are the main sources of elements needed for the development of civilization, contaminant and pollutant elements that impact global and local ecosystems, and elements that are essential plant nutrients. These elements are released from minerals through natural processes, such as chemical weathering, and anthropogenic activities, such as mining and energy production, agriculture and industrial activities, and careless waste disposal. Minerals also play key roles in the biogeochemical cycling of the elements, sequestering elements and releasing them as the primary minerals in crustal rocks undergo various structural and compositional transformations in response to physical, chemical, and biological processes that produce secondary minerals and soils. These processes have resulted in the release of toxic elements such as arsenic in groundwater aquifers, which is having a major impact on the health of millions of people in South and Southeast Asia. The interfaces between mineral surfaces and aqueous solutions are the locations of most chemical reactions that control the composition of the natural environment, including the composition of natural waters. The nuclear fuel cycle, from uranium mining to the disposition of high-level nuclear waste, is also intimately related to minerals. A fundamental understanding of these processes requires molecular-scale information about minerals, their bulk structures and properties such as solubility, their surfaces, and their interactions with aqueous solutions, atmospheric and soil gases, natural organic matter, and biological organisms. Gaining this understanding is further complicated by the presence of natural, incidental, and manufactured nano-particles in the environment, which

  19. Chinese dietary composition and element ingestion

    International Nuclear Information System (INIS)

    Zhu Hongda

    1990-01-01

    Based on the dietary composition and results of some nutrients obtained from the second Nationwide Nutrition Survey in 1982, as well as recently published element contents in various Chinese food, the resultant dietary intake of 19 kinds of elements and 17 radionuclides for Chinese public (mainly for male adults) were estimated. This estimation might be used as basis for development of Chinese Reference Man and estimation of the public background exposure

  20. Bibliography for finite elements. [2200 references

    Energy Technology Data Exchange (ETDEWEB)

    Whiteman, J R [comp.

    1975-01-01

    This bibliography cites almost all of the significant papers on advances in the mathematical theory of finite elements. Reported are applications in aeronautical, civil, mechanical, nautical and nuclear engineering. Such topics as classical analysis, functional analysis, approximation theory, fluids, and diffusion are covered. Over 2200 references to publications up to the end of 1974 are included. Publications are listed alphabetically by author and also by keywords. In addition, finite element packages are listed.