WorldWideScience

Sample records for double cubanes oxygen-ligated

  1. 3+ and [Sb13Se16Br2] 5+ - Double and quadruple spiro cubanes from ionic liquids

    KAUST Repository

    Ahmed, Ejaz

    2014-01-08

    The reaction of antimony and selenium in the bromine-rich Lewis acidic ionic liquid [BMIm]Br·4.7AlBr3 (BMIm: 1-butyl-3- methylimidazolium) in the presence of a small amount of NbCl5 at 160 °C yielded dark-red crystals of [Sb7Se8Br 2][AlX4]3. For X = Cl0.15(1)Br 0.85(1), the compound is isostructural to [Sb7S 8Br2][AlCl4]3 [P212 121, a = 12.5132(5) Å, b = 17.7394(6) Å, c = 18.3013(6) Å]. For a higher chlorine content, X = Cl 0.58(1)Br0.42(1), a slightly disordered variant with a bisected unit cell is found [P21212, a = 12.3757(3) Å, b = 17.4116(5) Å, c = 9.0420(2) Å]. The [Sb 7Se8Br2]3+ heteropolycation (C 2 symmetry) is a spiro double-cubane with an antimony atom on the shared corner. From this distorted octahedrally coordinated central atom, tricoordinate selenium and antimony atoms alternate in the bonding sequence. The terminal antimony atoms each bind to a bromine atom. Quantum chemical calculations confirm polar covalent Sb-Se bonding within the cubes and indicate three-center, four-electron bonds for the six-coordinate spiro atoms. The calculated charge distribution reflects the electron-donor role of the antimony atoms. The use of a chlorine-rich ionic liquid resulted in the formation of triclinic [Sb13Se16Br2][AlX4] 5 with X = Cl0.80(1)Br0.20(1) [P$\\\\bar {1}$, a = 9.0842(5) Å, b = 19.607(1) Å, c = 21.511(1) Å, α = 64.116(6), β = 79.768(7), γ = 88.499(7)]. The cationic cluster [Sb13Se16Br2]5+ is a bromine-terminated spiro quadruple-cubane. This 31 atom concatenation of four cubes is assumed to be the largest known discrete main group polycation. A similar reaction in a chloride-free system yielded [Sb7Se 8Br2][Sb13Se16Br2] [AlBr4]8. In its monoclinic structure [P2/c, a = 27.214(5) Å, b = 9.383(2) Å, c = 22.917(4) Å, β = 101.68(1)], the two types of polycations alternate in layers along the a axis. In the series [Sb4+3nSe4+4nBr2](2+n)+, these cations are the members with n = 1 and 3. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGa

  2. Structural and magnetic characterization of three tetranuclear Cu(II) complexes with face-sharing-dicubane/double-open-cubane like core framework

    Science.gov (United States)

    Paul, Aparup; Bertolasi, Valerio; Figuerola, Albert; Manna, Subal Chandra

    2017-05-01

    Three novel tetranuclear copper(II) complexes namely [Cu4(L1)4]•2(dmf) (1), [Cu4(L1)4] (2) and [Cu4(L2)2(HL2)2(H2O)2]•2(ClO4)·6(H2O) (3) (H2L1, (E)-2-((1-hydroxybutan-2-ylimino)methyl)phenol; H2L2, (E)-2-((1-hydroxybutan-2-ylimino)methyl)-6-methoxyphenol)) were synthesized from the self-assembly of copper(II) perchlorate and the tridentate Schiff base ligands. The structural determination reveals that complex 1 crystallizes in the monoclinic system with space group C2/c, whereas both the complexes 2 and 3 crystallize in the triclinic system with space group P-1. Complexes 1 and 2 possess face-sharing dicubane core, on the other hand complex 3 has double open cubane core structure. The copper(II) ions in the cubane core are in distorted square planar geometries, and weak π…π and C-H…π interactions lead to formation of a 2D supramolecular architecture for complexes 1 and 2. At room temperature complexes 1, 2 and 3, exhibit fluorescence with a quantum yield (Φs) of 0.47, 0.49 and 0.38, respectively. Variable temperature magnetic susceptibility measurements in the range 2-300 K indicate an overall weak antiferromagnetic exchange coupling in all complexes. The PHI program was used to study their magnetic behaviour. In agreement with their face-sharing dicubane structure, a Hamiltonian of the type H =- J1(S1S2+S1S2'+S1'S2+S1'S2') - J2S1S1', where S1 = S1' = S2 = S2' = SCu =1/2, was used for studying complexes 1 and 2. Simulations performed suggest magnetic exchange constants with values close to J1 =-20 cm-1 and J2 =0 cm-1 for these complexes. On the other hand, the spin Hamiltonian H =- J1(S1S4+S2S3) - J2(S1S3+S2S4) - J3S1S2, where S1 = S2 = S3 = S4 = SCu =1/2, was used to study the magnetic behaviour of the double open cubane core of complex 3 and a good agreement between the experimental and simulated results was found by using the parameters g1 = g2 =2.20, g3 = g4 =2.18, J1 =-36 cm-1, J2 =-44 cm-1 and J3 =0 cm-1.

  3. Cuban Landscapes

    DEFF Research Database (Denmark)

    Scarpaci, Joseph L.; Portela, Armando

    This accessible book offers a vivid geographic portrait of Cuba, exploring the island’s streetscapes, sugar cane fields, beaches, and rural settlements; its billboards, government buildings, and national landmarks. The authors illuminate how natural and built landscapes have shaped Cuban identity...... (cubanidad), and vice versa. They provide a unique perspective on Cuba’s distinct historical periods and political economies, from the colonial period through republicanism and today’s socialist era. Compelling topics include the legacies of slavery and the sugar industry, the past and future of urban...

  4. Structural and magnetic characterization of three tetranuclear Cu(II) complexes with face-sharing-dicubane/double-open-cubane like core framework

    Energy Technology Data Exchange (ETDEWEB)

    Paul, Aparup [Department of Chemistry and Chemical Technology, Vidyasagar University, Midnapore 721102, West Bengal (India); Bertolasi, Valerio [Dipartimento di Scienze Chimiche e Farmaceutiche, Centro di Strutturistica Diffrattometrica, Università di Ferrara, Via L. Borsari, 46, 44100 Ferrara (Italy); Figuerola, Albert [Departament de Química Inorgànica i Orgànica (Secció de Química Inorgànica) and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona (Spain); Manna, Subal Chandra, E-mail: scmanna@mail.vidyasagar.ac.in [Department of Chemistry and Chemical Technology, Vidyasagar University, Midnapore 721102, West Bengal (India)

    2017-05-15

    Three novel tetranuclear copper(II) complexes namely [Cu{sub 4}(L{sup 1}){sub 4}]∙2(dmf) (1), [Cu{sub 4}(L{sup 1}){sub 4}] (2) and [Cu{sub 4}(L{sup 2}){sub 2}(HL{sup 2}){sub 2}(H{sub 2}O){sub 2}]∙2(ClO{sub 4})·6(H{sub 2}O) (3) (H{sub 2}L{sup 1}, (E)−2-((1-hydroxybutan-2-ylimino)methyl)phenol; H{sub 2}L{sup 2}, (E)−2-((1-hydroxybutan-2-ylimino)methyl)−6-methoxyphenol)) were synthesized from the self-assembly of copper(II) perchlorate and the tridentate Schiff base ligands. The structural determination reveals that crystallizes in the monoclinic system with space group C2/c, whereas both the and crystallize in the triclinic system with space group P-1. and possess face-sharing dicubane core, on the other hand complex 3 has double open cubane core structure. The copper(II) ions in the cubane core are in distorted square planar geometries, and weak π…π and C–H…π interactions lead to formation of a 2D supramolecular architecture for and . At room temperature and , exhibit fluorescence with a quantum yield (Φ{sub s}) of 0.47, 0.49 and 0.38, respectively. Variable temperature magnetic susceptibility measurements in the range 2–300 K indicate an overall weak antiferromagnetic exchange coupling in all complexes. The PHI program was used to study their magnetic behaviour. In agreement with their face-sharing dicubane structure, a Hamiltonian of the type H =– J{sub 1}(S{sub 1}S{sub 2}+S{sub 1}S{sub 2’}+S{sub 1'}S{sub 2}+S{sub 1'}S{sub 2’}) – J{sub 2}S{sub 1}S{sub 1’}, where S{sub 1} = S{sub 1’} = S{sub 2} = S{sub 2’} = S{sub Cu} =1/2, was used for studying and . Simulations performed suggest magnetic exchange constants with values close to J{sub 1} =−20 cm{sup −1} and J{sub 2} =0 cm{sup -1} for these complexes. On the other hand, the spin Hamiltonian H =– J{sub 1}(S{sub 1}S{sub 4}+S{sub 2}S{sub 3}) – J{sub 2}(S{sub 1}S{sub 3}+S{sub 2}S{sub 4}) – J{sub 3}S{sub 1}S{sub 2}, where S{sub 1} = S{sub 2} = S{sub 3} = S{sub 4

  5. Demand for cuban tobacco as seen through cuban exports

    OpenAIRE

    Fernández de Pinedo Echevarría, Nadia

    2013-01-01

    During the nineteenth century Spain did not import the majority of Cuban tobacco, nor was most of it consumed in Spain. Spain neither consumed nor re-exported Cuban tobacco. Cuban tobacco, due to its high quality, was too expensive to be able to compete with tobacco of lesser quality which was, therefore, cheaper. The Spanish tax office preferred to take in huge amounts of money by taxing consumption in general rather than promoting Cuban tobacco. For this reason, Spain imported tobacco of me...

  6. Erotic(izing Cubans

    Directory of Open Access Journals (Sweden)

    Virginia R. Domínguez

    1996-07-01

    Full Text Available [First paragraph] Sugar's Secrets: Race and the Erotics of Cuban Nationalism. VERA M. KUTZINSKI. Charlottesville: University Press of Virginia, 1993. xvii + 287 pp. (Cloth US$ 40.00, Paper US$ 17.95 Life on the Hyphen: The Cuban-American Way. GUSTAVO PÉREZ FlRMAT. Austin: University of Texas Press, 1994. xii + 217 pp. (Cloth US$ 30.00, Paper US$ 12.95 When a country is subjected to as much external political and ideological scrutiny as Cuba in the post-Batista years, scholarly explorations of something other than its foreign policy, its political economy, and its human rights abuses provide a breath of fresh air. But I am struck by the other things Sugar's Secrets and Life on the Hyphen have in common and how suspicious I am of their commonalities.

  7. Stories of Cuban-Americans Living and Learning Bilingually

    Science.gov (United States)

    Perez, Natasha

    2017-01-01

    This study explores the interplay of bilingualism, identity, literacy and culture for CubanAmerican students in the Cuban diaspora. I contextualize their experiences within the social, historical, and political background of Cuban immigration, situating their stories within the conflicting narratives of Cuban-American imagination in the U.S., to…

  8. Lifestyle Risk Factors and Cardiovascular Disease in Cubans and Cuban Americans

    Directory of Open Access Journals (Sweden)

    Melissa S. Burroughs Peña

    2012-01-01

    Full Text Available Cardiovascular disease is the leading cause of mortality in Cuba. Lifestyle risk factors for coronary heart disease (CHD in Cubans have not been compared to risk factors in Cuban Americans. Articles spanning the last 20 years were reviewed. The data on Cuban Americans are largely based on the Hispanic Health and Nutrition Examination Survey (HHANES, 1982–1984, while more recent data on epidemiological trends in Cuba are available. The prevalence of obesity and type 2 diabetes mellitus remains greater in Cuban Americans than in Cubans. However, dietary preferences, low physical activity, and tobacco use are contributing to the rising rates of obesity, type 2 diabetes mellitus, and CHD in Cuba, putting Cubans at increased cardiovascular risk. Comprehensive national strategies for cardiovascular prevention that address these modifiable lifestyle risk factors are necessary to address the increasing threat to public health in Cuba.

  9. Demographic and Related Determinants of Recent Cuban Emigration.

    Science.gov (United States)

    Briquets, Sergio Diaz

    1983-01-01

    Examines principal demographic determinants of recent Cuban emigration and discusses how these demographic variables interact with other social, economic, and political determinants. Suggests that Cuban labor migration is more responsive to demographic factors than some theorists assume. (Author/MJL)

  10. 31 CFR 515.574 - Support for the Cuban People.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Support for the Cuban People. 515.574..., Authorizations, and Statements of Licensing Policy § 515.574 Support for the Cuban People. (a) Specific licenses....560(c) and other transactions that are intended to provide support for the Cuban people including, but...

  11. Cuban Science and the Open Access Alternative

    CERN Document Server

    Arencibia Jorge, Ricardo; Torricella-Morales, Raúl G

    2004-01-01

    Science in Cuba has experienced extraordinary development since the triumph of the Cuban Revolution, in spite of the blockade to which Cuba has been subjected by the United States Government, and thanks to the support and cooperation of the countries that were part of the former Socialist Block. However, after the destruction of the Socialist Block, the Cuban economy suffered through a restructuring process that included the reorganization of the traditional systems for spreading scientific information. At that moment, it was necessary to use alternative means to effectively publicise, to the international scientific community, the information generated by Cuban scientists and scholars. This paper briefly reviews this new era, the institutions that led the process of change, and the future projections based on knowledge of the digital environment and the creation of electronic and open access information sources.

  12. Cubans team up for better nutrition.

    Science.gov (United States)

    Gorry, Conner

    2009-10-01

    A ham and cheese sandwich every day. Fried chicken and pork rinds. White rice, white bread, and few leafy greens. Soft drinks with every meal. When interviewers asked a nationwide sample of Cubans what they ate on a typical day, and what they would put on a daily menu if they could choose whatever they wanted, these were among the top responses. Results of that landmark study revealed that a majority of Cubans eat too much sugar, not enough fruits and vegetables, and have an unhealthy predilection for fried food, red meat and saturated fats.

  13. Where is the Cuban economy heading ?

    OpenAIRE

    Herrera , Rémy

    2006-01-01

    URL des Cahiers : http://mse.univ-paris1.fr/MSEFramCahier2006.htm; Cahiers de la Maison des Sciences Economiques 2006.32 - ISSN 1624-0340; This article is the introduction of an issue (to be published) of the U.S. review International Journal of Political Economy on the Cuban economy, and coordinated by Rémy Herrera. It deals with the progresses, but also with the deficiencies, of the Cuban revolution in the economic field, until the recent de-dollarization. It underlines its economic challen...

  14. Nuclear analytical techniques in Cuban Sugar Industry

    International Nuclear Information System (INIS)

    Diaz Riso, O.; Griffith Martinez, J.

    1996-01-01

    This paper is a review concerning the applications of Nuclear Analytical Techniques in the Cuban sugar industry. The most complete elemental composition of final molasses (34 elements ) and natural zeolites (38) this last one employed as an auxiliary agent in sugar technological processes has been performed by means of Instrumental Neutron Activation Analysis (INAA) and X-Ray Fluorescence Analysis (XRFA). The trace elements sugar cane soil plant relationship and elemental composition of different types of Cuban sugar (rawr, blanco directo and refine) were also studied. As a result, valuable information referred to the possibilities of using these products in animal and human foodstuff so as in other applications are given

  15. Ethnobotany of pru, a traditional Cuban refreshment

    NARCIS (Netherlands)

    Volpato, G.; Godínez, D.

    2004-01-01

    Gouania polygama (Jacq.) Urban, Smilax domingensis Willd., and Pimenta dioica Merr., are three species widely used within Cuban ethnobotanical traditions and practices. Pru is a traditional refreshment and medicinal drink produced by their decoction and fermentation with sugar. It is claimed to have

  16. [The beginning of the Cuban demographic revolution].

    Science.gov (United States)

    Hernandez Castellon, R

    1981-01-01

    The characteristics of the Cuban demographic revolution associated with the main economic, political, and social changes in the country are analyzed. The authors begin with a brief historical outline of the political-economic situation in the country in the middle of the 19th century. There is emphasis on the dependency of the Cuban economy and its monoproducer nature (with sugar being the major export). This was due to the Spanish colonization and to the subsequent American neocolonization. The discovery of the cause for yellow fever by a Cuban physician and the sanitation campaign conducted by the Americans contributed to a diminishing of mortality. A great migratory flow occurred due to the price of sugar in the world market. This must have influenced Cuban demographic patterns which are a major factor linked to the demographic revolution. The influence on proliferation of urbanization and educational trends is emphasized. The low participation in economic activities of women during the early part of the century did affect fertility levels. The trends in mortality throughout the period 1907-43 are pointed out. It was found that 1 major aspect which had a bearing on Cuban demographic patterns was the 2 large migratory flows. An analysis of growth rates in the population--which also confirms the demographic changes in Cuba--is presented. It is concluded that the 4th decade of this century witnessed Cuba's entry in a new stage of the demographic revolution, a stage in which decreased fertility and mortality go together to create a new period. (author's)

  17. Managing environmental problems in Cuban karstic aquifers

    Science.gov (United States)

    León, Leslie Molerio; Parise, Mario

    2009-07-01

    The Cuban archipelago hosts some of the most typical karst features in the Caribbean, and has very important and high-quality resources of karst water. Carbonate rocks cover about 70% of the country area, with a great variety of karst features, and outstanding exokarstic landforms such as the cone karst; in addition, many caves are regarded as cultural and historical sites. Protection of the karst hydric resources is therefore essential. In karst, the intrinsic vulnerability of the environment makes it highly susceptible to pollution, which may result in dramatic consequences for both the quality of karst water and the amount of water available. Many anthropogenic activities produce negative changes in the karst aquifers, in some cases with unrecoverable effects. In Cuba, five main sources of pollution to karst aquifers have been identified: sea water intrusion, agricultural practices, waste disposal, industrial activity, and mining and oil production. Due to the narrow and elongated configuration of the main island, wide portions of the territory are mostly affected by seawater intrusion problems, exacerbated by the concentration of both population and human activities in the largest towns located along, or very close to, the coasts. Seawater intrusion, however, is not the only source of pollution for Cuban karst aquifers. The other aforementioned sources are important, and may locally prevail (e.g. pollution resulting from sugar cane factories). Considerations on the management of karst aquifers and a brief description of the water quality monitoring system of Cuban inland waters are also provided.

  18. State of malnutrition in Cuban hospitals.

    Science.gov (United States)

    Barreto Penié, Jesús

    2005-04-01

    We assessed the current state of undernutrition as observed in 1905 patients hospitalized in 12 Cuban health care institutions, as part of a Latin American, multinational survey similar in design and goals. We surveyed 1905 randomly selected patients from 12 Cuban hospitals in a two-phase study. Patients' clinical charts were audited in phase 1, the Subjective Global Assessment was used to assess patients' nutritional status in phase 2. The study was locally conducted by a properly trained team. The frequency of undernutrition in Cuban hospitals was 41.2% (95% confidence interval = 38.9 to 43.4), and 11.1% of patients were considered severely undernourished. Statistically significant (P hospital services/specialties were identified: geriatrics (56.3%), critical care (54.8%), nephrology (54.3%), internal medicine (48.6%), gastroenterology (46.5%), and cardiovascular surgery (44.8%). Malnutrition rates increased progressively with prolonged length of stay. A high malnutrition rate was observed among participating hospitals. The design and inception of policies that foster intervention programs focusing on early identification of hospital malnutrition and its timely management is suggested to decrease its deleterious effects on outcomes of health care in the participating hospitals.

  19. Cuban School Dictionaries for First-Language Learners: A Shared ...

    African Journals Online (AJOL)

    It will give no final answer, but it will discuss an experience with a Cuban school dictionary which has reached its target users in large numbers. The contribution will particularly look at the multi-faceted relation between lexicographers and users which characterises the Cuban dictionary project. The objective is not to copy ...

  20. Acculturation, Media Exposure, and Eating Disorders in Cuban American Women.

    Science.gov (United States)

    Jane, Dulce M.; Hunter, George C.; Lozzi, Bettina

    This study examined the dual roles of continued close ties with the Cuban community and culture of origin, as well as influences of print and broadcast media, in the development of attitudes toward both type and propensity toward eating disorders among young Cuban-American women. Continued exclusive or primary use of Spanish language in the home,…

  1. Cubans abroad: a gendered case study on international migrations.

    Science.gov (United States)

    Núñez-Sarmiento, Marta

    2010-01-01

    Cubans who have migrated since the 1990s after living for two decades or more in their country of origin left with an embedded gender ideology that they acquired in a society where gender relations were undergoing radical transformations. As a result, Cuban feminization of migrations has its peculiarities. In this context, there are three issues to consider: explaining how gender relations attained in Cuba, as part of the overall attitudes gained since childhood, influenced Cuban migrants who have left the island permanently since 1990, introduced uniqueness in their migration processes, and made up a different feminization of migration; identifying the features of Cuban social structure that shaped the gender ideology of Cuban migrants; and producing new knowledge about Cuban international migration processes by using a gender perspective and by analyzing the gender relations prevailing in the years before the crisis of the 1990s, as well as since the beginning of the twenty-first century. The first part of this article focuses on gender distinctiveness of recent Cuban migrants, and the second summarizes some traits of the Cuban social structure—mainly referred to female employment—that could explain the gender training of the migrants.

  2. The Cuban nuclear program and its Scientific and Technical Infrastructure

    International Nuclear Information System (INIS)

    Gandarias Cruz, D.; Codorniu Pujals, D.

    1995-01-01

    The present paper shows the aspects including the Cuban Nuclear Program and underlines its close connection with the strategy of economic, social and scientific technical development in the country, the organizing structure of the Cuban nuclear activity is explained. The application of nuclear techniques and research development activity in the nuclear field are also expressed in detailed in this paper

  3. Mental Health in Mariel Cubans and Haitian Boat People.

    Science.gov (United States)

    Eaton, William W.; Garrison, Roberta

    1992-01-01

    Presents prevalence data on 4 specific mental disorders among 452 Cuban immigrants who arrived in the Mariel crisis and 500 Haitians who arrived in the United States at the same time. Only among the Cubans was the standard inverse relationship between socioeconomic status and rate of mental disorder observed. (SLD)

  4. Pedagogical professional training in Cuban educative context

    Directory of Open Access Journals (Sweden)

    Mayre Acosta Calderón

    2015-05-01

    Full Text Available The conception of the pedagogical professional training has evolved alongside with the educative changes that have taken place in the history of Cuban education. This research was intended to examine the evolution of professional training from the foundation of colleges of Education to the present. The study takes into account the relation of the instructive, educative and developing aspects; the development of the professional needs and their influence on cognitive and formative activity of learners and their professional performance; the components of contents included in the evaluation of the professional competence; and the comprehensive disciplinary approach of the formation process. Thus, this investigation is aimed at providing a historical analysis of the development of the pedagogical professional training, illustrating the continuity of the formative process in Cuban context. This study revealed the main trends of the pedagogical professional training for the General Senior High Education, It shows the movement from a former segmentation of instructive and educative components and emotional and intellectual educations to a and interconnected approach of both processes.

  5. The “transnational living” of cuban immigrants in Spain

    Directory of Open Access Journals (Sweden)

    Cristina García-Moreno

    2013-02-01

    Full Text Available In line with the advances in the analysis of migration processes and other phenomena of human mobility, thanks to the contributions of theoretical and methodological framework of transnationalism, we intend to make a brief presentation on the specifities of the Cuban case in Spain. As we will have the opportunity to discuss later, one of the peculiarities of Cuban migration is the multitude of obstacles and constraints that the Cuban State imposes on the transnational movement of its citizens. These bureaucratic and political restrictions are a reality inseparable from the design that people make of their migratory project.

  6. Sugarcane energy use: The Cuban case

    International Nuclear Information System (INIS)

    Alonso-Pippo, Walfrido; Luengo, Carlos A.; Koehlinger, John; Garzone, Pietro; Cornacchia, Giacinto

    2008-01-01

    This paper examines the history, methods, costs, and future prospects of Cuba's attempts to develop the energy potential of sugarcane. An overview of the main factors affecting the current sugarcane agro-industry in Cuba is provided, along with an analysis of why, despite attempts by the Cuban government to revive the country's sugarcane agro-industry, the industry continues to decline. The prevailing conditions and degree of modernization in Cuban sugar factories are evaluated. The sugar-agro industry's main production bottlenecks are studied. The fall in sugarcane yield from 57.5 ton/ha in 1991 to 22.4 ton/ha in 2005 and its relation to land use is explained. The socio-economic impact of the sugarcane agro-industry's downsizing is assessed. The governmental and quasi-governmental entities in charge of sugarcane energy use development and the country's legal framework are analyzed. The Cuban sugarcane agro-industry's opportunities in the growing international biofuels and bioenergy market are evaluated. To situate Cuba within the global bioenergy market, international best practices relating to the production and commercialization of biofuels are examined to determine the degree to which these experiences can be transferred to Cuba. The analysis of the Cuba sugar industry's biofuel potential is based on a comparative technical-economic assessment of three possible production scenarios: (1) the current situation, where only sugar is produced; (2) simultaneous production of sugar-anhydrous ethanol; and (3) production of sugar-ethanol and simultaneous generation of surplus electricity exported to a public grid. Some of the key assumptions underlying these analyses are as follows: Ethanol production and operation costs for a 7000 ton/day-sugar mill are estimated to be 0.25 and 0.23 USD/l, respectively. The influence of gasoline prices on sugar-ethanol production is also assessed. The kWh production and operation costs starting from sugarcane bagasse are estimated at 0

  7. Soil hydraulic properties of Cuban soils

    International Nuclear Information System (INIS)

    Ruiz, M.E.; Medina, H.

    2004-01-01

    Because soil hydraulic properties are indispensable for determining soil water retention and soil water movement, their input for deterministic crop simulation models is essential. From these models is possible to access the effect of the weather changes, soil type or different irrigation schedules on crop yields. With these models, possibilities are provided to answer questions regarding virtual 'what happen if' experiments with a minimum of fieldwork. Nevertheless, determining soil hydraulic properties can be very difficult owing to unavailability of necessary equipment or the lack of personal with the proper knowledge for those tasks. These deficiencies are a real problem in developing countries, and even more so when there is not enough financial possibilities for research work. This paper briefly presents the way these properties have been accessed for Cuban soils, which methods have been used and the work now in progress. (author)

  8. Multi-elemental characterization of Cuban natural zeolites

    International Nuclear Information System (INIS)

    Diaz Rizo, O.; Herrera Peraza, E.F.

    1996-01-01

    Concentrations of 38 elements in samples from four important Cuban zeolite bed have beam obtained by Instrumental Neutron Activation (INAA) and X-Ray Fluorescence Analysis (XRFA). In comparison with other analytical techniques good agreement was achieved. The concentration values of minor element Ba, Sr, Zn, and Mn, and 25 trace element (including 9 REE) are at the first time reported in Cuban zeolite. It is important for the zeolite evaluation in different industrial uses

  9. Systematics and biogeography of Cuban porcelain crabs (Decapoda: Anomura: Porcellanidae).

    Science.gov (United States)

    Diez, Yander L; Lira, Carlos

    2017-01-10

    Marine crustaceans are a well-known invertebrates group in Cuban waters, but some taxa are not well catalogued and the literature about them is scattered. In this work, we present the checklist of porcelain crabs of Cuban Archipelago, including the literature registers and unpublished author's data. A key to the identification of 8 genera and 23 species of the Cuban porcelain crabs is provided. Information about the local distribution of species is presented. In addition, we analyzed the porcelain crab faunal affinities between the ecoregions of the Cuban platform, Greater Antilles islands and the Tropical Northwestern Atlantic (TNA) province. For the first time, we record the presence of the monotypic genus Parapetrolisthes Haig in Cuba. On the Cuban platform, the highest similarities are between the Southcentral and Northwestern ecoregions (50%) and between Northcentral and Northeastern (40%). In the Greater Antilles, Cuba and Puerto Rico are the most similar (54%), but in general, the porcelain crab composition shows a high variation (e. g. 19% between Hispaniola and Puerto Rico). In the Tropical Northwestern Atlantic, five homogeneous groups of porcelain crab species are distinguished. Cuban fauna is most similar to that of Floridian, Western Caribbean and Southern Gulf of Mexico ecoregions. The decrease in species richness is evident from south to north in the TNA Province.

  10. Sex and sentiment in Cuban tourism.

    Science.gov (United States)

    Babb, Florence E

    2010-01-01

    Helen Safa has been a leading program builder and pioneer in research that examines the complex intersections of gender, race, class, and nation in Latin America and the Caribbean. Her comparative research culminated in her influential book, The Myth of the Male Breadwinner: Women and Industrialization in the Caribbean (1995), which examined gender, family, and employment across three Caribbean societies. Over several decades Safa has inspired scholarship throughout the Caribbean and the Americas and her work is exemplary of engaged anthropology in the region. Here I present work I conducted in Cuba that was guided, like my work in Peru, Nicaragua, and southern Mexico by the writings of Safa and others who saw the critical need to bring gender into meaningful discussion in the field of Latin American and Caribbean studies. In what follows, drawn from my broader research on tourism in four nations, I explore and reflect on the contemporary dynamics of sex and romance tourism in Cuba. I suggest that the allure of this domain of tourism may be enhanced by Cuba's global political identity, and that Cuban women participating in commodified and intimate exchanges reveal an ability to get along in a market economy that generally excludes them.

  11. Decontamination of Cuban oysters using irradiation

    International Nuclear Information System (INIS)

    Cisneros Despaigne, E.; Leyva Castillo, V.; Martinez, L.L.; Lara Ortiz, C.; Castillo Rodriguez, E.

    2001-01-01

    Oysters (Crassostrea virginica) collected on the Cuban coast near Havana were examined for contamination with Vibrio cholerae and other potentially pathogenic Vibrio species. The strains thus isolated were characterized and identified to species following standard methods, and their radiation resistance (D 10 ) was determined in pure culture. The Vibrio species most often isolated were V. cholerae, V. parahaemolyticus and V. Alginolyticus. Representative cultures from each species were later used to inoculate shucked oysters to determine the optimal radiation dose that would ensure elimination of 10 8 colony forming units (CFU)/g. The highest proportion of isolates were identified as Vibrio parahaemolyticus and V. algynoliticus. Non-O1 strains of Vibrio cholerae were isolated from 50% of samples, but no V. cholerae O1 was identified. D 10 values calculated for the various strains were low in relation to those in the literature. The radiation dose for decontaminating heavily inoculated (10 8 CFU/g) oysters was 1.2 kGy. (author)

  12. Speaking from experience: today's Cuban women and breast cancer.

    Science.gov (United States)

    Núñez, Marta

    2012-04-01

    Over 2200 new cases of breast cancer are diagnosed annually in Cuba, and a decade ago I became one of them. Late in 2000, I underwent breast cancer surgery at the National Oncology and Radiology Institute in the Cuban capital. My experience-both with the disease and as a sociologist at the University of Havana studying gender relations-serves as the basis for the following essay. The article characterizes today's Cuban women, particularly those of us with or at risk of breast cancer, and describes my own and others' responses to our disease. My aim is to provide insights useful to the physicians, nurses, engineers, physicists, technicians, and service and administrative workers in Cuba's health services who interact with us, whose increased awareness will make us feel more deeply understood and respected. In this context, I also reflect on the Cuban media's portrayal of cancer, with recommendations for dismantling the biases of fatalism and even pity often conveyed.

  13. Nostalgia, Shame and the Transplanted Cuban: "la cubana arrepentida"

    Directory of Open Access Journals (Sweden)

    Olga Lorenzo

    2005-03-01

    Full Text Available Literature can illuminate and extend our understanding of the affect of shame. In this paper, I will use extracts from my fictional works, published and in progress, and other fictional work and poetry by Cuban and Cuban-American exile writers to illustrate some aspects of shaming in relation to the experience of being a Cuban-American migrant in the United States, particularly relative to the sense of exilic nostalgia for the lost homeland. I will also look at how shame is used by the minority culture to control, erode or slow the process of assimilation and to try to maintain the illusion of the superiority of the minority culture.

  14. October's offspring: Soviet cinema and The Cuban film institute

    OpenAIRE

    Mraz, John

    2015-01-01

    Has Soviet cinema been a significant influence on the films produced in Revolutionary Cuba? I will limit my focus here to the first fifteen years of Cuban cinema, from 1960 to 1975, an era that is both formative as well as decisive for the Cuban Film Institute (ICAIC, Instituto Cubano de Arte e Industria Cinematográficos). During this time, a truly national cinema was forged, alternative film styles were explored, and a serious effort was made to develop critiques and theories that would cont...

  15. Language Use and Identity in the Cuban Community in Russia

    Science.gov (United States)

    Yakushkina, Maria; Olson, Daniel J.

    2017-01-01

    A significant body of research has begun to explore the association between language and identity, a relationship that becomes more complex when considering multilingual communities. Important for this field, a number of studies have examined the interrelation between language and identity in the Cuban population in the USA, a case in which…

  16. THE CUBAN ENTERPRISE, COMPETITIVENESS, IMPROVEMENT BUSINESS AND QUALITY

    Directory of Open Access Journals (Sweden)

    Andrés Fernández-Companioni

    2016-01-01

    Full Text Available This article offers some reflections on the Cuban enterprise, its business process improvement and competitiveness that firms must have in entering the world market. It analyzes the economic policies of the last two Congresses of the Communist Party of Cuba that give importance to the role of the Cuban socialist state enterprise system. It conceptualizes the category: business. Knowledge of the categories: effectiveness, efficiency, effectiveness, competitiveness, quality and productivity must for Cuban entrepreneurs. To increase export capacity, we must address a number of factors such as quality and product innovation, the price level depends on the productivity of the inflation differential between countries and other factors with indirect effects on competitiveness, and service quality or corporate image. Are some of the mistakes made in business development in the country. Relate some of the quality awards granted in the world and which should aim to achieve the necessary visibility in international business. Relate some of the quality awards that are granted in the world and which should aim for Cuban entrepreneurs to achieve the necessary visibility in international business. It provides a table that lists the entities Award Winning Quality in Cuba until 2008. It shows a country ranking of the indicators of global competitiveness generated annually by The Global Competitiveness Report. Reasoning about the causes that led to the business improvement process (SPE (Legislative Decree 252 and Decree 281. 

  17. Frequency of antibodies to Toxocara in Cuban schoolchildren.

    NARCIS (Netherlands)

    Sariego, I.; Kanobana, K.; Junco, R.; Vereecken, K.; Nunez, F.A.; Polman, K.; Bonet, M.; Rojas, L.

    2012-01-01

    Objective The aim of the study was to determine the frequency of antibodies to Toxocara in Cuban schoolchildren. Methods The frequency of antibodies to Toxocara canis was assessed with a commercial enzyme-linked immunosorbent assays kit in school-aged children from two municipalities of Cuba.

  18. 31 CFR 515.546 - Accounts of Cuban sole proprietorships.

    Science.gov (United States)

    2010-07-01

    ... proprietorships. Specific licenses are issued unblocking sole proprietorships established under the laws of Cuba... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Accounts of Cuban sole proprietorships. 515.546 Section 515.546 Money and Finance: Treasury Regulations Relating to Money and Finance...

  19. 1rst Congress of the Cuban Society of Soil Sciences

    International Nuclear Information System (INIS)

    1988-01-01

    Abstracts from different works presented at the 1st Congress of the Cuban Society of Soil Sciences (Havana, December 1988) are contained in this book. Works have been performed on soil genesis, classification and cartography; soil erosion, conservation and improvement; agrochemicstry; soil physics and technology, and biology of soils

  20. Cuban Migration Trends and Their Impact on Central America Region

    Directory of Open Access Journals (Sweden)

    Charleene Cortez Sosa

    2017-06-01

    Full Text Available In recent years, the migration of Cuban population has taken new directions; this is mainly due to the migration policy flexibility adopted by the Cuban government and other Latin America governments, such as Ecuador, Grenada, Trinidad and Tobago, Dominican Republic, and Haiti, among others, by issuing visas in favorable conditions for the population. Although there are varied reasons to migrate, this population has traditionally migrated motivated by the United States Cuban Adjustment Act which grants administrative advantages for regularization; no other country of the continent offers this privilege. Due to their political exile condition, whoever arrives to the United States will easily have access to legal mechanisms for migrant regularization. Although there has been great work on migration in general terms, little has been addressed on the Cuban migration in the Central American region; possibly this is due to the difficulty to find quantitative information in this regard. The article aims to facilitate the understanding of migration in a context of flexibility and establishment of new relations between the Caribbean and Central America.

  1. Cuban Women, Sex Role Conflicts and Use of Prescription Drugs.

    Science.gov (United States)

    Gonzalez, Diana H.; Page, J. Brian

    This paper focuses on Cuban women migrants living in Miami (Florida) and on their adaptation to life in exile, especially their use of minor tranquilizers. Many of these women left Cuba for political and economic reasons. The migration process restructured their social status in many ways. They were not allowed to bring valuables or financial…

  2. Two-dimensional networks of lanthanide cubane-shaped dumbbells.

    Science.gov (United States)

    Savard, Didier; Lin, Po-Heng; Burchell, Tara J; Korobkov, Ilia; Wernsdorfer, Wolfgang; Clérac, Rodolphe; Murugesu, Muralee

    2009-12-21

    The syntheses, structures, and magnetic properties are reported for three new lanthanide complexes, [Ln(III)(4)(mu(3)-OH)(2)(mu(3)-O)(2)(cpt)(6)(MeOH)(6)(H(2)O)](2) (Ln = Dy (1.15MeOH), Ho (2.14MeOH), and Tb (3.18MeOH)), based on 4-(4-carboxyphenyl)-1,2,4-triazole ligand (Hcpt). The three complexes were confirmed to be isomorphous by infrared spectroscopy and single-crystal X-ray diffraction. The crystal structure of 1 reveals that the eight-coordinate metal centers are organized in two cubane-shaped moieties composed of four Dy(III) ions each. All metal centers in the cubane core are bridged by two mu(3)-oxide and two mu(3)-hydroxide asymmetrical units. Moreover, each cubane is linked to its neighbor by two externally coordinating ligands, forming the dumbbell {Dy(III)(4)}(2) moiety. Electrostatic interactions between the ligands of the triazole-bridged dimers form an extended supramolecular two-dimensional arrangement analogous to a metal-organic framework with quadrilateral spaces occupied by ligands from axial sheets and by four solvent molecules. The magnetic properties of the three compounds have been investigated using dc and ac susceptibility measurements. For 1, the static and dynamic data corroborate the fact that the {Dy(III)(4)} cubane-shaped core exhibits slow relaxation of its magnetization below 5 K associated with a single-molecule magnet behavior.

  3. Cuban Voices: A Case Study of English Language Teacher Education

    Science.gov (United States)

    Smith, Steven John

    2016-01-01

    This case study uses qualitative research methods and a postcolonial paradigm to listen to the voices of Cuban teacher educators describing how they educate and prepare English language teachers in Cuba. English language teacher education in Cuba includes features that are considered innovative, contemporary and good practice in the Western world.…

  4. Fifty Years On: The Cuban Missile Crisis Revisited and Reinterpreted

    OpenAIRE

    White, Mark

    2012-01-01

    On the 50th anniversary of the Cuban missile crisis Mark White re-examines the most dangerous episode in the history of the Cold War. Utilising declassified materials, he provides a fresh interpretation of the roles play by John Kennedy’s team of advisers. In particular, the contributions made by Robert McNamara and Robert Kennedy are re-evaluated.

  5. Population affinities of 19th Century Cuban crania: implications for identification criteria in South Florida Cuban Americans.

    Science.gov (United States)

    Ross, Ann H; Slice, Dennis E; Ubelaker, Douglas H; Falsetti, Anthony B

    2004-01-01

    Identification criteria, specifically discriminant function formulae derived from traditional craniometrics, currently used in South Florida for Cuban Americans and other "Hispanic" groups, are unsuitable to provide adequate biological profiles due to complex biological histories as well as widely diverse geographic origins. Florida's total population is approximately 16 million (15,982,378) individuals. Of the total population 2.682,715, or 16.8%, are self-identified as "Hispanic". South Florida (herein defined as Miami-Dade, Broward and Collier Counties) is home to 60% of the total Hispanic population of Florida with 1,291,737 (48.15%) residing in Miami-Dade County. The Hispanic population of Miami-Dade County makes up 57.0% of the total population of 2,253,362. Each recognized sub-group of Hispanics (Mexican, Puerto Rican, and Cuban) includes its own geographic point-of-origin and population history. Cuban-Americans (arriving in the late 1950's and early 1960's) make up the largest sub-population of Florida's Hispanics in any county and in Miami-Dade number 650,601 or 51% of the total Latin population. Additionally, as in other agricultural states, Florida has a very large population of undocumented workers who primarily arrive from Texas and points south of the Straits of Florida. Thus the application of the available traditional craniometric and non-metric methods are not appropriate for South Florida's Latin population. To begin to address this issue in relation to South Florida's Cuban population, we present an analysis of cranio-facial shape variation in a 19th Century Cuban sample, 17th Century Spanish sample, a Precontact Cuban sample, and Terry Blacks using geometric morphometric methods. Significant biological shape differences and patterns of variation are observed among the groups. These results provide us with a context in which to begin to understand the biological variation of Cuban Americans, which will enable the development of identification

  6. Gamma radiation effects on the cuban antimeningococcic BC vaccine

    International Nuclear Information System (INIS)

    Padron Soler, E.; Romay Penabad, Z.; Le Riveran Morales, E.; Campa Huergo, C.; Sierra Gonzalez, G.; Alfalla Valdes, L.; Prieto Miranda, E.

    1994-01-01

    The effects of gamma rays on the Cuban antimeningococcic BC vaccine properties were studied. These were performanced by simulation with different bio burden of microbial pollutants. The isolated spores of the pollutants of non- aseptic areas were used. Its D10 was determined as 2.045 Gy. On that basis, the sterilization dose setting was performed. The quality of the irradiated vaccine was performed according to the Cuban standards: sterility, protein and polysaccharide concentration, immunogenicity, per cent of protein adsorption, nonspecific innocuousness. There were observed non negative effects on the vaccine of the radiation process in the dose range of 0-25 Gy. It was also studied the preservation of the properties of the irradiated vaccine, by storing it during one year at four celsius grade. The results were satisfactory

  7. The cooperative identity in the cuban constitution. Currents challenges

    Directory of Open Access Journals (Sweden)

    Orestes Rodríguez Musa

    2013-12-01

    Full Text Available The work contribute with some valuations about the conception of the cooperative in the Cuban constitutionalism, with the purpose that the constitution can guide -like it corresponds- the legal implementation of the figure toward an integral perspective. To accomplish this goal, this article offers a characterization of the institution that illustrates about its identity. Then it analyzed the juridical dimension of the cooperative, pondering the different doctrinal postures that have tried to define its nature. Lastly, it argue that the current laws of the Cuban Constitution, influenced by a reduced conception of the institution, suffers some limitations that block the good use of the figure in a socioeconomic context in which it is called to transcend.

  8. Folding cubanidad : a Deleuzian approach to contemporary Cuban cinema

    OpenAIRE

    Monaldi, Paola

    2012-01-01

    Electronic version excludes material for which permission has not been granted by the rights holder. Copyright permissions are pending. In this thesis I look at the way in which Cuban cinema of the post-Cold War period re-envisions the image of the nation through a theoretical framework of Deleuzian extraction. In particular, I refer to Deleuze's philosophy of difference and multiplicity to explain how national difference can be produced by film narratives operating within given ideologica...

  9. The Cuban embargo and southeastern agricultural export markets

    OpenAIRE

    Copeland, Cassandra

    2010-01-01

    Cuba is a large neighbor of the U.S. Southeast with substantial export potential when the embargo is lifted. The present paper estimates the potential gains from trade in Southeastern agricultural export markets calibrating linear excess supply and excess demand to observed prices, outputs, exports, Cuban imports, and price elasticities in the literature. Linear excess supply and demand gauge market gains from trade in rice, grains, soybeans, poultry, pork, and meat. This paper is the first d...

  10. Recovery of native treefrogs after removal of nonindigenous Cuban Treefrogs, Osteopilus septentrionalis

    Science.gov (United States)

    Rice, K.G.; Waddle, J.H.; Miller, M.W.; Crockett, M.E.; Mazzotti, F.J.; Percival, H.F.

    2011-01-01

    Florida is home to several introduced animal species, especially in the southern portion of the state. Most introduced species are restricted to the urban and suburban areas along the coasts, but some species, like the Cuban Treefrog (Osteopilus septentrionalis), are locally abundant in natural protected areas. Although Cuban Treefrogs are known predators of native treefrog species as both adults and larvae, no study has demonstrated a negative effect of Cuban Treefrogs on native treefrog survival, abundance, or occupancy rate. We monitored survival, capture probability, abundance, and proportion of sites occupied by Cuban Treefrogs and two native species, Green Treefrogs (Hyla cinerea) and Squirrel Treefrogs (Hyla squirella), at four sites in Everglades National Park in southern Florida with the use of capture–mark–recapture techniques. After at least 5 mo of monitoring all species at each site we began removing every Cuban Treefrog captured. We continued to estimate survival, abundance, and occupancy rates of native treefrogs for 1 yr after the commencement of Cuban Treefrog removal. Mark–recapture models that included the effect of Cuban Treefrog removal on native treefrog survival did not have considerable Akaike's Information Criterion (AIC) weight, although capture rates of native species were generally very low prior to Cuban Treefrog removal. Estimated abundance of native treefrogs did increase after commencement of Cuban Treefrog removal, but also varied with the season of the year. The best models of native treefrog occupancy included a Cuban Treefrog removal effect at sites with high initial densities of Cuban Treefrogs. This study demonstrates that an introduced predator can have population-level effects on similar native species.

  11. Determination of rare earth elements in sea sediments from the Cuban northwestern coast by instrumental neutron activation analysis

    International Nuclear Information System (INIS)

    Capote Rodriguez, G.; Perez Zayas, G.; Pena Fortes, B.; Diaz Riso, O.; Hernandez Rivero, A.T.

    1998-01-01

    The multielemental characterization of sea sediments from an important Cuban coast was performed using instrumental Neutron activation analysis. The obtained results shown an impoverishment of in the studied zone, in comparison with the data taken from other Cuban coaster zones

  12. Cuban heritage in Africa: Deported Ñáñigos to Fernando Po in the ...

    African Journals Online (AJOL)

    This paper focuses on the 19th century deportation of Ñáñigos (members of Abakuá, a Cuban secret society) to Fernando Po (Bioko). I argue against the widely held negative image of this group as portrayed in the news and press information in Spanish newspapers from 1865 to 1950 that document the Cuban heritage in ...

  13. Co-occurrence of invasive Cuban Treefrogs and native treefrogs in PVC pipe refugia

    Science.gov (United States)

    Elston, Laura M.; Waddle, J. Hardin; Rice, Kenneth G.; Percival, H. Franklin

    2013-01-01

    The Cuban Treefrog (Osteopilus septentrionalis) was first introduced to Florida at Key West. Since this introduction, Cuban Treefrogs have spread to Miami and are now established throughout most of peninsular Florida. Cuban Treefrogs can become very abundant in areas they colonize. Several reasons contribute to their success, including a generalist diet, high fecundity and the ability to reproduce year-round, and use of disturbed or human-modified habitats. Scientists and managers are concerned that Cuban Treefrogs may contribute to the decline of native treefrogs. Cuban Treefrogs may exclude native treefrogs through both competition and predation. Because the evidence from our study and others suggests that Green and Squirrel Treefrogs do not alter their behavior to avoid Cuban Treefrogs, there is cause for concern that sampling with PVC pipes may increase the vulnerability of the native species to predation. This possibility needs further research, including whether other species of native treefrogs sympatric to where Cuban Treefrogs have invaded are also naïve to the possible threat posed by these frogs, and also if native treefrogs eventually learn to avoid Cuban Treefrogs.

  14. The Cuban Vocational Education and Training System and Its Current Changes

    Science.gov (United States)

    Wolf, Stefan; Penton, Felipe A. Hernandez; Marin, Anna Lidia Beltran; Romero, Osvaldo

    2011-01-01

    The main purpose of the article is to inform about the Cuban Vocational Education and Training System. Based on the analyse of different studies, on expert interviews and on field experiences the authors give a clear overview of the Cuban VET-System. This description is embedded in the presentation of the general education system in Cuba and in a…

  15. 19 CFR 151.111 - Cigars, cigarillos, and tobacco of Cuban origin.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Cigars, cigarillos, and tobacco of Cuban origin... SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Cigars, Cigarillos, and Tobacco § 151.111 Cigars, cigarillos, and tobacco of Cuban origin. The tobacco National...

  16. Anti-commodity counterpoint: smallholder diversity and rural development on the Cuban sugar frontier

    NARCIS (Netherlands)

    Curry Machado, J.M.

    2016-01-01

    It is established historiographical wisdom to say that the spectacular rise of the Cuban sugar industry in the 19th and early 20th centuries brought with it a stifling of an alternative developmental path for Cuban rural society — an ‘anti-commodity’ vision of ‘little Cuba’, built not upon the

  17. 31 CFR 515.410 - Dealing abroad in Cuban origin commodities.

    Science.gov (United States)

    2010-07-01

    ... commodities. 515.410 Section 515.410 Money and Finance: Treasury Regulations Relating to Money and Finance... Interpretations § 515.410 Dealing abroad in Cuban origin commodities. Section 515.204 prohibits, unless licensed, the importation of commodities of Cuban origin. It also prohibits, unless licensed, persons subject to...

  18. Cuban Cinema in a Global Context: The Impact of Eastern European Cinema on the Cuban Film Industry in the 1960s

    OpenAIRE

    Matuskova, Magdalena

    2017-01-01

    The study analyzes how the socialist bloc film industry integrated Cuba in socialist internationalism, and how Cuba benefited from and resisted that integration. I argue that negotiating two competing narratives – socialist internationalism (solidarity) and the Cuban anti-neocolonialism (sovereignty) – affected this cultural exchange. Cubans enjoyed the material benefits of socialist solidarity, but strongly resisted when it threatened their decision-making. As a result of this, Cuba downplay...

  19. The U.S. Navy and the Cuban Missile Crisis

    Science.gov (United States)

    1990-05-22

    Wall Street’s fears by denying that he was a communist and declaring his respect for private property. Not everyone saw Castro as a nuevo amigo, however...Commander Thomas Cosgrove , the Oxford’s captain, had prepared his ship for trouble. If the Cubans tried to stop and board her, he could call upon the ready...removal of the missiles under the auspices of a UN observer team. The Soviet UN ambassador repeatedly denied the American charges, however. 39 That same

  20. Kinanthropometric profile of Cuban women Olympic volleyball champions.

    Science.gov (United States)

    Carvajal, Wiliam; Betancourt, Hamlet; León, Sofia; Deturnel, Yanel; Martínez, Miriam; Echevarría, Ivis; Castillo, María Eugenia; Serviat, Noemí

    2012-04-01

    Athletes' kinanthropometric profiles are widely addressed in the scientific literature. Such profiles are particularly important in volleyball because absolute size contributes a significant percentage of total variance associated with athletic success. As in other team sports, volleyball players' kinanthropometric attributes correlate with the game's tactical demands. From 1992 through 2000, the Cuban women's volleyball team achieved top global performance, winning first place in three successive Summer Olympic Games. Describe the kinanthropometric profiles of Cuban women Olympic volleyball champions during 1992-2000 and compare these by position played. Measurements were taken of body composition, somatotype, proportionality and several anthropometric indicators in 41 Cuban women volleyball players, grouped by playing position. All were members of the national team that participated in the Summer Olympic Games in Barcelona (1992), Atlanta (1996) and Sydney (2000). Mean and standard deviations were calculated for all study variables. Analysis of variance was used to compare means for different positions for the variables weight; height; percent adipose, muscle and bone mass; body mass index; and muscle-to-bone ratio. Discriminant analysis was performed to identify anthropometric dimensions differentiating playing positions (center, spiker and setter), using pvolleyball players was balanced mesomorphic (2.7-3.6-2.9). Classified by position, centers (2.9-3.4-3.4) and spikers (2.8-3.6-2.9) presented an average mesomorphic-ectomorphic somatotype, and setters (2.6-3.7-2.6) were balanced mesomorphic. On assessing Somatotype Attitudinal Mean (SAM), centers and spikers showed more intrapositional homogeneity than that of setters. Centers were significantly taller (187.1±2.5 cm) than players in other positions. Centers' percent adipose tissue mass (28.9±2.7%) was significantly higher than that of setters (24.3±2.7%), who were leanest of all positions. The

  1. Cuban and antinjerencismo in the Government of the Hundred Days

    Directory of Open Access Journals (Sweden)

    Lourdes María Rodríguez Rodríguez

    2005-12-01

    Full Text Available This article in essence expresses the characteristics of a government of the Neocolonial Republic, known by its heterogeneous distinction, and for its revolutionary projection in correspondence with the moment they lived, not only in its internal projection, but also in its foreign policy, in the international relationships area as a common expression of a Latin American feeling, that for the decade of the 30', it was an irrevocable reality: the anti colonial feeling; therefore it allows a better understanding of the process of formation of the nationality and of the Cuban nation, main objective of the study programs of the subject History of Cuba.

  2. Screening of some Cuban medicinal plants for antimicrobial activity.

    Science.gov (United States)

    Martínez, M J; Betancourt, J; Alonso-González, N; Jauregui, A

    1996-07-05

    The antimicrobial activities of 23 extracts of 12 Cuban plant species reported in traditional medicine were tested. The agar diffusion method was used to assess the activity against four bacteria and one yeast: Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa and Candida albicans. The results, evaluated as the diameter of the inhibition zone of microbial growth, showed that nine extracts were active against Gram-positive bacteria but only two of these proved to be also active against Gram-negative bacteria. None of the extracts inhibited the growth of the yeast. The most susceptible bacterium was Staphylococcus aureus and the best antibacterial activity was shown by Schinus terebenthifolius.

  3. The crystal density of nitrogen cubane and other polynitrogen species.

    Science.gov (United States)

    Moxnes, John F

    2017-09-23

    The elusive N n species remain hypothetical at the time of writing. However, they have long captured the imaginations of researchers in the field of energetic materials due to their high detonation velocity and detonation pressure. Solid nitrogen cubane N 8 is one candidate material that has been much studied theoretically. We question the reported crystal density of this hypothetical solid (2.65 g/cm 3 ). Here quantum mechanical volume estimates indicate that its density might be as low as 1.89 g/cm 3 . The predicted detonation pressure and velocities may thus be grossly overestimated of their true values.

  4. MEDICAL TOURISM : Demand for Cuban Medical Tourism by Russian Consumers

    OpenAIRE

    Ulanova, Anastasia

    2015-01-01

    Medical tourism, often addressed as health tourism, is a new concept in terms of tourism industry in general, and it is also one of the rapidly developing and growing ones. This thesis gives information on the medical tourism in general and its history. It also revises the development stages of the medical tourism in the world. Cuban medical tourism is analyzed on its own, as well as Russian medical tourism and the demand for it. Medical tourism is rather popular among Russians due to various...

  5. [Surgery for Wolff-Parkinson-White syndrome. Cuban experience].

    Science.gov (United States)

    Carballido Pérez, J; Dorticos, F; Zayas, R; Dorantes, M; Sainz, H; Tain, J

    1990-01-01

    Surgery is a recent approach in the treatment of arrhythmias. The first successful surgery of this type was the interruption of the accessory pathway in a patient suffering from the Wolff Parkinson White syndrome. In 25 consecutive patients who underwent surgery, 28 accessory AV pathways were identified with classical endocardial and epicardial mapping. Only three patients experienced recurrence of preexcitation without symptoms; one patient had AV block; and another patient died. In all cases we successfully used either an endocardial or an epicardial approach. The purpose of this paper is to report the Cuban experience with this procedure.

  6. Neutron activation analysis of final molasses from cuban sugar industry

    International Nuclear Information System (INIS)

    Griffith, J.; Gonzalez, E.; Rosenberg, R.J.; Diaz-Rizo, O.

    1996-01-01

    Thermal and epithermal non-destructive activation analyses have been performed on samples of final molasses from 14 different sugar factories , covering the most important regions in Cuba. From the first measurement after irradiation at the Triga Mark reactor (VTT), the concentration of more than 15 elements is reported. The almost constant elemental composition shows that they can be used equally for different purposes as animal foodstuff and for the manufacture of biotechnological products. This work is part of a research project developed in order to establish a complete characterization of Cuban sugar molasses. (author). 7 refs., 2 tabs

  7. [The reactogenicity and immunogenicity of the first Cuban vaccine against human leptospirosis].

    Science.gov (United States)

    Martínez Sánchez, R; Obregón Fuentes, A M; Pérez Sierra, A; Baly Gil, A; Díaz González, M; Baró Suárez, M; Menéndez Capote, R; Ruiz Pérez, A; Sierra González, G; López Chávez, A U

    1998-01-01

    A controlled double-blind trial was conducted with the participation of 80 adult volunteers of both sexes, who were randomly divided into groups of 40 individuals each one. The case-base study received the vaccine and the control group was administered placebo to know the safety, the behaviour of reactogenicity, and to star the immunogenicity studies of the first Cuban vaccine against human leptospirosis. The vaccine used in the case-base study was an inactivated and trivalent vaccine containing strains of Leptospira canicola, icterohaemorrhagiae and pomona, since they have the highest circulation in the country. The results obtained showed the inocuity of the vaccine as no adverse severe reactions were detected. The general symptomatology observed was low, where as febricula was the most common general symptom. It appeared during the first 3 days of observation and there were no significant differences between the 2 group. Only a mild pain at the site of the injection was reported as a local symptom, which was more frequent in the vaccinated group than in the control group (7.8 against 1.5%, respectively). The seroconversion obtained was of 29% by microagglutination, and of 34.2% by ELISA. The final results allowed to conclude that this vaccine is safe for human adults at the ages under study, and give the possibility to continue other studies in more advanced stages to complete the requirements for obtaining its license.

  8. Revolutionizing Cuban Psychiatry: The Freud Wars, 1955-1970.

    Science.gov (United States)

    Lambe, Jennifer Lynn

    2017-01-01

    This article traces the battle over Freud within Cuban psychiatry from its pre-1959 origins through the "disappearance" of Freud by the early 1970s. It devotes particular attention to the visit of two Soviet psychiatrists to Cuba in the early 1960s as part of a broader campaign to promote Pavlov. The decade-long controversy over Freud responded to both theoretical and political concerns. If for some Freud represented political conservatism and theoretical mystification, Pavlov held out the promise of a dialectical materialist future. Meanwhile, other psychiatrists clung to psychodynamic perspectives, or at least the possibility of heterogeneity. The Freudians would end up on the losing side of this battle, with many departing Cuba over the course of the 1960s. But banishing Freud did not necessarily make for stalwart Pavlovians-or vanguard revolutionaries. Psychiatry would find itself relegated to a handmaiden position in the work of revolutionary mental engineering, with the government itself occupying the vanguard.

  9. The Cuban National Healthcare System: Characterization of primary healthcare services.

    Directory of Open Access Journals (Sweden)

    Keli Regina DAL PRÁ

    2015-10-01

    Full Text Available This article presents a report on the experience of healthcare professionals in Florianópolis, who took the course La Atención Primaria de Salud y la Medicina Familiar en Cuba [Primary Healthcare and Family Medicine in Cuba], in 2014. The purpose of the study is to characterize the healthcare units and services provided by the Cuban National Healthcare System (SNS and to reflect on this experience/immersion, particularly on Cuba’s Primary Healthcare Service. The results found that in comparison with Brazil’s Single Healthcare System (SUS Cuba’s SNS Family Healthcare (SF service is the central organizing element of the Primary Healthcare Service. The number of SF teams per inhabitant is different than in Brazil; the programs given priority in the APS are similar to those in Brazil and the intersectorial nature and scope of the services prove to be effective in the resolution of healthcare problems.

  10. Historical personalities of the Cuban education. A reflection necesary

    Directory of Open Access Journals (Sweden)

    Yordan Nápoles-Ramírez

    2017-04-01

    Full Text Available Along the History of the Cuban education, the teaching and the learning of the life and work of the historical personalities has constituted a priority. However, the tendency has prevailed to alone to approach in the different teaching levels the historical personalities from a political-military focus, without conceiving an integrative treatment that embraces other spheres of the social activity. Equal limitations exist in reconstructing the historical context where the same ones were developed and to analyze their narrow one with the diverse social sectors that accompanied her. The present article seeks to demonstrate the necessity to transform the treatment of the historical personalities at the present time. 

  11. A Game-Theoretic History of the Cuban Missile Crisis

    Directory of Open Access Journals (Sweden)

    Frank C. Zagare

    2014-01-01

    Full Text Available This study surveys and evaluates previous attempts to use game theory to explain the strategic dynamic of the Cuban missile crisis, including, but not limited to, explanations developed in the style of Thomas Schelling, Nigel Howard and Steven Brams. All of the explanations were judged to be either incomplete or deficient in some way. Schelling’s explanation is both empirically and theoretically inconsistent with the consensus interpretation of the crisis; Howard’s with the contemporary understanding of rational strategic behavior; and Brams’ with the full sweep of the events that define the crisis. The broad outlines of a more general explanation that addresses all of the foundational questions associated with the crisis within the confines of a single, integrated, game-theoretic model with incomplete information are laid out.

  12. Microsatellite typing and susceptibilities of serial Cryptococcus neoformans isolates from Cuban patients with recurrent cryptococcal meningitis

    NARCIS (Netherlands)

    Illnait-Zaragozi, M.T.; Martinez-Machin, G.F.; Fernandez-Andreu, C.M.; Hagen, F.; Boekhout, T.; Klaassen, C.H.W.; Meis, J.F.

    2010-01-01

    Background: Cryptococcus neoformans is commonly associated with meningoencephalitis in immunocompromised patients and occasionally in apparently healthy individuals. Recurrence of infection after initial treatment is not uncommon. We studied C. neoformans isolates from 7 Cuban patients with

  13. Eating behaviors in Cuban adults: results from an exploratory transcultural study

    Directory of Open Access Journals (Sweden)

    Boris C. Rodríguez-Martín

    2016-09-01

    Full Text Available This study aims to investigate eating behaviors in Cuban adults and compare them with those of a developed Western country, Italy. The study also aimed to determine the overall accuracy of a predictive model intended to define variables which could be used to discriminate between nationalities. Participants were 283 normal weight individuals from Cuba (n = 158 and Italy (n = 125. Italians had higher scores for restrained eating on the questionnaire than Cubans with a considerable effect size. This trend was also found for emotional eating and binge eating, as well as number of current dieters, despite the fact that effect sizes were small. On the other hand, Cubans, when compared to Italians reported higher scores for food thought suppression with reward responsiveness and restrained eating emerging as significant predictors of between-country differences. To conclude, eating behaviors in Cubans could be different from those reported in European countries, perhaps as a consequence of Cuba’s recent history.

  14. Methodology of Competences Management Assuming the Cuban Norm about Management of Human Capital

    OpenAIRE

    Santos, Armando Cuesta

    2011-01-01

    An applied research conducted in eight Cuban companies which follow the approach of skills in strategic management of human resources according to the standard Cuban CN: 3000-3002:2007 on human capital management, seeking a superior performance to higher productivity. It sought to manage the connection of individual work with the responsibilities for the strategic organizational performance. As a result we have obtained a metodology to manage the various skill levels expressed in this compani...

  15. Navigating hybridity: investigating the dance between culture and values within the cuban national education system.

    Directory of Open Access Journals (Sweden)

    Erik Byker

    2013-12-01

    Full Text Available Hybridity is the dynamic relationship between local and global factors that push and pull on people and nations. Hybridity is deeply situated in socio-contextual factors, like cultural beliefs, education, and political systems, that aid and hinder a people’s navigation of globalized phenomena. Simply put, hybridity is how people and societies adapt to a changing world. This article examines the case of Cuba in response to hybridity. Specifically, the article’s purpose is to examine ways that the Cuban National Education System impacts how Cubans navigate the global march towards hybridity. The article reports on a focused ethnographic study of a week long education trip to Cuba during February 2013. The ethnography includes over 100 hours of data collection, including semi-structured interviews with 26 Cuban participants. The study uses Freire’s (1970 notion of “humanizing pedagogy” to analyze how the impact of the Cuban National Education System values in the context of Cuba and larger global context. The study found that three values in particular, amor, solidaridad, and conciencia de derechos y response, were deeply embedded in the Cuban National Education System and effect the way that Cubans navigate the complex hybridity that situates their island nation.

  16. Cuban experience in dosimetry quality audit program in radiotherapy

    International Nuclear Information System (INIS)

    Alonso-Samper, J.L.; Dominguez, L.; Yip, F.G.; Laguardia, R.A.; Morales, J.L.; Larrinaga, E.

    2002-01-01

    Full text: Five years ago we started a National Program of Quality Assurance in Radiotherapy. This program was possible thanks to the cooperation between the Cuban Ministry of Health and the International Atomic Energy Agency (IAEA) in the Projects ARCAL XXX and CUB/6/011. In the framework of these projects a total of ten complete dosimetry set were acquired and a large number of medical physicists were trained. At the same time, the Cuban side signed a contract for nine cobalt units, which have been gradually installed and all of them are running at the moment. During more than 20 years Cuba has taken part in the IAEA/WHO TLD postal dose audit programs and our results have been inside the (+/-)5 % acceptance limit. Cuba also joined the IAEA Coordinated Research Program E2 40 07, to extend at a national level the experience of the TLD based audits, using the capability of our SSDL to measure TLD. At the same time the work of the already existing External Audit Group was consolidated. The National Program of Quality Assurance in Radiotherapy works on base of external on-site visits. The main objective is to avoid any accident and to improve the quality of the RT treatments. Every year each Radiotherapy service is visited by a qualified team of physicists with the objective to check the physical aspects of the quality of the RT treatment, it includes: Documents and Records, safety, mechanical and dosimetric aspects, treatment planning, also we use the fixed depth phantom to simulate and verify several techniques. Although the TLD postal audit results are acceptable, in our QA audits we have detected some problems that may deviate the dose delivery to patients in more than 5%, examples of which are: Not all the clinical plans are redundantly checked by an independent person; Not all the controls (daily, monthly and annual) are performed according to the protocols approved by the National QA Committee. In some cases the controls are not well recorded; Clinical

  17. Two new 1D chains of Ni2Na2 heterometallic double half-cubane ...

    Indian Academy of Sciences (India)

    Keywords. Coordination polymers; cluster; Ni 2 II , 1D chain; magnetism; DFT. Abstract. An equimolar mixture of Ni(NO3)2·6H2O and pyridine-2-aldehyde with two equivalents of NaN3 in methanol in the presence of NaOMe resulted in the formation of light green precipitate which upon crystallization from dimethylformamide ...

  18. Identification of protein binding in pictorial art Cuban

    International Nuclear Information System (INIS)

    Mendoza, Ariadna; Correa, Maurin; Maqueira, Isis

    2011-01-01

    In this paper were implemented microanalysis methodologies by histochemical analysis, and infrared spectroscopy to determine the nature of the binder in paintings and Gas Chromatography (GC) coupled to Mass Spectrometry (MS) for identification of protein binders of common use in tempera technique with the aim of having these methods as part of the identification of artistic materials in Cuban cultural heritage carried out by Archaeometry Laboratory of Havana city's Historian Cabinet. The methodologies implemented were evaluated using model samples of traditional painting techniques with variable protein binder: yolk, egg white, casein, nut oil and animal glue; ageing for 5 years. The models samples were correctly identified. It was determined the interference of pigments with the presence of nitrogen by histochemical analysis with Amido Black dye. IR spectroscopy technique allowed to differentiate between oily and mixed (oil plus protein) techniques and tempera with yolk. Oily technique was identified in wall paintings of the New San Francisco church (XIX century) and the Obrapia House (XVII century) and the technique of tempera with animal glue in the polychrome of the XVIII century which represents St. John the Evangelist belonging to the San Juan de Letran church

  19. In vitro antimicrobial assessment of Cuban propolis extracts.

    Science.gov (United States)

    Monzote, Lianet; Cuesta-Rubio, Osmany; Campo Fernandez, Mercedes; Márquez Hernandez, Ingrid; Fraga, Jorge; Pérez, Kleich; Kerstens, Monique; Maes, Louis; Cos, Paul

    2012-12-01

    Propolis is a resinous mixture of different plant exudates collected by honeybees. Currently, propolis is widely used as a food supplement and in folk medicine. We have evaluated 20 Cuban propolis extracts of different chemical types, brown (BCP), red and yellow (YCP), with respect to their in vitro antibacterial, antifungal and antiprotozoal properties. The extracts inhibited the growth of Staphylococcus aureus and Trichophyton rubrum at low µg/mL concentrations, whereas they were not active against Escherichia coli and Candida albicans. The major activity of the extracts was found against the protozoa Leishmania, Trypanosoma and Plasmodium, although cytotoxicity against MRC-5 cells was also observed. The BCP-3, YCP-39 and YCP-60 extracts showed the highest activity against P. falciparum, with 50% of microbial growth (IC₅₀) values of 0.2 µg/mL. A positive correlation between the biological activity and the chemical composition was observed for YCP extracts. The most promising antimicrobial activity corresponds to YCP subtype B, which contains acetyl triterpenes as the main constituents. The present in vitro study highlights the potential of propolis against protozoa, but further research is needed to increase selectivity towards the parasite. The observed chemical composition-activity relationship of propolis can contribute to the identification of the active principles and standardisation of this bee product.

  20. Facebook social uses by young Cubans on the island

    Directory of Open Access Journals (Sweden)

    Liliam Marrero Santana

    2017-10-01

    Full Text Available It proposes an approach to the social uses of the social networking site (SNS Facebook made by a group of young Cubans residents in the country, as a result of a qualitative research of an empirical-descriptive nature. The virtual ethnography is the main methodological strategy and it is complemented with the application of different techniques like the documentary and literature review, the semi-structured interview and the discussion group. As a part of the analysis’ results, are referred some of the determinant factors of the social uses of Facebook and are described the practices of the young associated with the better use of the techno-communicatives codes of the computing platform, the content production and the collective construction of meaning in this particular network environment. Among the main conclusions of the study, the relevance of the category social uses for the analysis of socio-historical and cultural processes mediated by and mediators of ICT is reaffirmed.

  1. In vitro antimicrobial assessment of Cuban propolis extracts

    Directory of Open Access Journals (Sweden)

    Lianet Monzote

    2012-12-01

    Full Text Available Propolis is a resinous mixture of different plant exudates collected by honeybees. Currently, propolis is widely used as a food supplement and in folk medicine. We have evaluated 20 Cuban propolis extracts of different chemical types, brown (BCP, red and yellow (YCP, with respect to their in vitro antibacterial, antifungal and antiprotozoal properties. The extracts inhibited the growth of Staphylococcus aureus and Trichophyton rubrum at low µg/mL concentrations, whereas they were not active against Escherichia coli and Candida albicans. The major activity of the extracts was found against the protozoa Leishmania, Trypanosoma and Plasmodium, although cytotoxicity against MRC-5 cells was also observed. The BCP-3, YCP-39 and YCP-60 extracts showed the highest activity against P. falciparum, with 50% of microbial growth (IC50 values of 0.2 µg/mL. A positive correlation between the biological activity and the chemical composition was observed for YCP extracts. The most promising antimicrobial activity corresponds to YCP subtype B, which contains acetyl triterpenes as the main constituents. The present in vitro study highlights the potential of propolis against protozoa, but further research is needed to increase selectivity towards the parasite. The observed chemical composition-activity relationship of propolis can contribute to the identification of the active principles and standardisation of this bee product.

  2. What is the Role of the Cuban Revolutionary Armed Forces (FAR) in a Post-Castro Cuba? What Role will the U.S. Military Play

    Science.gov (United States)

    1993-04-01

    through his brother Raul for the past 30 years. The Spanish heritage and machismo tradition of the Cuban male is strong: the long struggle the Cubans...himself on the air in an attempt to change the course of Cuban history. " (Oppenheimer 132). None of this machismo tradition has been lost on Fidel Castro

  3. Establishment of the exotic invasive Cuban treefrog (Osteopilus septentrionalis) in Louisiana

    Science.gov (United States)

    Glorioso, Brad M.; Waddle, J. Hardin; Muse, Lindy J.; Jennings, Nicole D.; Litton, Melanie; Hamilton, Joel; Gergen, Steven; Heckard, David

    2018-01-01

    The Cuban treefrog, Osteopilus septentrionalis, is native to Cuba, the Bahamas, and the Cayman Islands, and is invasive in areas where it has been introduced and established in the Caribbean as well as Florida. Despite repeated occurrences in several states over many years, it was not believed that Cuban treefrogs had successfully established outside of Florida in the mainland United States. From mid-September to mid-November 2017, we captured and removed 367 Cuban treefrogs in just four surveys in New Orleans, Louisiana. The impacts of this population on native treefrogs in this area is unknown but possibly severe as indicated by the paucity of observations of native treefrogs during our surveys. Eradication of this seemingly established population is improbable, but continued surveys will facilitate learning about the ecology and genetics of this novel population.

  4. Cuban experience with the therapeutic use of adult stem cells

    International Nuclear Information System (INIS)

    Hernandez Ramirez, Porfirio; Alfonso Simon, Amel; Aparicio Suarez, Jose L

    2011-01-01

    The basic and clinical researches carried out during past years on the stem cells and its therapeutic possibilities are at present times, one of the most interesting subjects of the contemporaneous medicine. There are advances in the study and application of adult stem cells showing remarkable advantages on the embryonic ones, since its handling is more simple, economic and they are obtained from the own subject to be treated. For the introduction in Cuba of the regenerative cellular therapy in the Institute of Hematology and Immunology the cellular sources selected were the adult stem cells derived from bone marrow and the mobilized ones to the peripheral blood. To make easy the expansion of treatment to other hospital centers, authors standardized a technique for the mobilization of the hematopoietic stem cells to peripheral blood using a granulocyte colony-stimulating factor (Filgrastim, of national production) developing a simple, economic and more tolerable method for patients. In this way, the cellular therapy has been expanded to 6 Cuban provinces and until April, 2009 562 cases with autologous adult stem cells transplant have been treated, from which the 81.7% to correspond to patients presenting with Angiology diseases with a significant reduction of major amputations. Also, the results have been very promising in the bone lesions and periodontal processes among other diseases treated. The results obtained until now may be considered as a new achievement of revolutionary science and of our national health systems and of science and technique. The method used is an economic and feasible procedure for the institutions with scarce resources

  5. Trump And Obama’s “Cuban Legacy”

    Directory of Open Access Journals (Sweden)

    Kh. Sh. Ulugova

    2017-01-01

    Full Text Available After the triumph of revolution in Cuba in 1959 Washington and Havana have been hostile to each other for more than half a century. Even the end of the Cold War and disintegration of the bipolar international system left intact the antagonism between the two. Only after Barack Obama came to power did normalization become possible. He admitted the failure of the policy of sanctions and declared a “new beginning” in US-Cuba relations. There is a risk now that under the new administration of Donald Trump the efforts made before can be neutralized if the US president keeps his recent pre-election promise and cancels all the previous agreements on normalization. The question remains open – whether Obama’s achievements in this regard will be preserved or Trump will manage to reverse the normalization policy of his predecessor. There will be either pragmatic Trump the businessman who understands the benefits of continuing Obama’s policy, or Trump the politician who will stand firm on his pre-election pledge to roll back on once promising initiative. The article analyzes the process of normalization initiated by Obama and Castro in 2014, explains its background motivations and builds various scenarios of further development of Cuban-American relations, as well as Trump’s policy towards Cuba. It is unlikely that the Trump administration will abandon what has already been achieved. It may entail significant political and economic costs, which is unacceptable for Trump the businessman. However, any new progressive steps towards the normalization should not be expected in the short term.

  6. Economic Benefit for Cuban Laurel Thrips Biological Control.

    Science.gov (United States)

    Shogren, C; Paine, T D

    2016-02-01

    The Cuban laurel thrips, Gynaikothrips ficorum Marchal (Thysanoptera: Phlaeothripidae), is a critical insect pest of Ficus microcarpa in California urban landscapes and production nurseries. Female thrips feed and oviposit on young Ficus leaves, causing the expanding leaves to fold or curl into a discolored leaf gall. There have been attempts to establish specialist predator natural enemies of the thrips, but no success has been reported. We resampled the same areas in 2013-2014 where we had released Montandoniola confusa (= morguesi) Streito and Matocq (Hemiptera: Anthocoridae) in southern California in 1995 but had been unable to recover individuals in 1997-1998. Thrips galls were significantly reduced in all three of the locations in the recent samples compared with the earlier samples. M. confusa was present in all locations and appears to be providing successful biological control. The value of the biological control, the difference between street trees in good foliage condition and trees with poor foliage, was $58,766,166. If thrips damage reduced the foliage to very poor condition, the value of biological control was $73,402,683. Total cost for the project was $61,830. The benefit accrued for every dollar spent on the biological control of the thrips ranged from $950, if the foliage was in poor condition, to $1,187, if the foliage was in very poor condition. The value of urban forest is often underappreciated. Economic analyses that clearly demonstrate the very substantial rates of return on investment in successful biological control in urban forests provide compelling arguments for supporting future efforts. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  7. The Dynamics of Cuba Anticyclones (CubANs) and Interaction With the Loop Current/Florida Current System

    Science.gov (United States)

    Kourafalou, Vassiliki; Androulidakis, Yannis; Le Hénaff, Matthieu; Kang, HeeSook

    2017-10-01

    Mesoscale anticyclonic eddies along the northern Cuban coast (CubANs) have been identified in the Straits of Florida, associated with the northward shift of the Florida Current (FC) and the anticyclonic curvature of the Loop Current (LC) at the western entrance of the Straits. The dynamics of CubAN eddies and their interaction with the LC/FC system are described for the first time using satellite, drifter and buoy data, and a high-resolution model. It is shown that the evolution of CubANs to the south of the FC front complements the evolution of cyclonic eddies to the north of the FC, advancing previous studies on synergy between FC meandering and eddy activity. Two types of CubAN eddies are characterized: (a) a main anticyclonic cell (type "A") within the core of the LC during retracted phase conditions, associated with the process of LC Eddy (LCE) shedding from an extended LC, and (b) an individual, distinct anticyclonic eddy that is released from the main LC core and is advected eastward, along the northern Cuban coast (type "B"). There are also mixed cases, when the process of LCE shedding has started, so a type "A" CubAN is being formed, in the presence of one or more eastward progressing type "B" eddies. CubAN evolution is associated with an increased mixed layer and weaker stratification of the upper ocean along the eddy's track. The cyclonic activity along the Cuban coast and wind-induced upwelling events also contribute to the evolution and fate of the CubAN eddies.

  8. Improvement of the Cuban Regulatory Framework for preparedness and response to radiological emergency

    International Nuclear Information System (INIS)

    Diaz Guerra, Pedro; Lopez Corteza, Yamil; Jerez Vegueria, Pablo; Quevedo Garcia, Jose; Dumenigo Gonzalez, Cruz

    2004-01-01

    Taking into account the national experience in managing radiological emergencies situations and the recommendations documents on the preparedness and response to radiological emergencies recently published by the IAEA, the Cuban regulatory authority had improved the regulatory framework relate to the management of radiological emergencies. The Cuban regulatory framework was characterized by the lack of regulations and technical guides ruling the planning and the establishment of the response to radiological emergencies by the holders of authorizations and intervening forces. This paper presents a technical proposal of the authors in order to improve the existing regulatory framework

  9. The imaginary Cuban identity in the first twenty years of the Republic (1902-1922

    Directory of Open Access Journals (Sweden)

    Irina Pacheco-Valera

    2012-12-01

    Full Text Available This article deals with the construction of the Cuban cultural identity imaginary in the first twenty years of the Republic from the dialogues of continuity and discontinuity with the colonia period. The controversies or counterpoints that took place on the theme of blackness as a key identity from the confluences and interinfluences with the social fabric constitute the thematic agenda that is strengthened to join us in the efforts to rethink the mystery of the Cuban identity in the Caribbean orbit.---Original in Spanish.

  10. Final results of the Cuban program for children from areas affected by the Chernobyl accident

    International Nuclear Information System (INIS)

    Medina, Julio; García, Omar

    2016-01-01

    From 1990 till 2011, a free health care program for children from areas affected by the Chernobyl accident was organized and implemented by the Cuban Government. A significant number of qualified personal in medicine and science collaborated with this program. The information gathered for more than 21 years and the conclusive results obtained in the program are presented here. During this time, 26 114 patients, 84 % children, mostly from Ukraine, Russia and Belarus were treated in the mentioned program. Other aspects of the Cuban medical assistance in Ukraine and the main results obtained in the radiological impact evaluation of the accident on the children treated in Cuba are also included. (author)

  11. Management of nuclear information and knowledge in Cuban institutions

    International Nuclear Information System (INIS)

    Garcia, A.G.; Rondon, C.F.; Aldama, C.L.; Aruca, L.A.; Labrada, C.

    2004-01-01

    , to evaluate a perception on Cuban population about the use of nuclear energy; To develop a methodology to evaluate the impact of applied projects of Nuclear Ramal Program; To develop National Information System on Energy in Cuba. The annual celebration of events like the National Workshop of Knowledge Management in Energy and the National Seminar of Information on Energy, with an important and a decisive support of the OIEA, allow to create spaces for discussion on these topics and to share the experiences of the institutions in the implementation of processes of information and knowledge management, starting from the design and implementation of own strategies. The most relevant results are presented in this paper, obtained after the execution of these projects that allow the acquisition, development, generalization and application of information and nuclear knowledge generated in Cuba and abroad. (author)

  12. Magnetic Resonance Project 35-26-7: A Cuban Case of Engineering Physics and Biophysics

    Science.gov (United States)

    Cabal Mirabal, Carlos A.

    The Magnetic Resonance Project 35-26-7 started in December 1987, commissioned by the [then] Cuban Prime Minister, Fidel Castro, who—concerned about introducing technological advancement into the Cuban health [system]—had for some months taken an interest in the possibility of building magnetic resonance imaging (MRI) equipment for medical diagnosis in Cuba (Zito M, Argüelles MM et al, Y sin embargo-: ciencia: hablan 30 investigadores cubanos. Editoria April, Habana, pp 56-66, 1999; Cabal, Biofísica Médica. In: Fidel Castro Dìas-Balart (eds) Cuba. Amanecer del Tercer Milenio. Ciencia, Sociedad y Tecnología: Biofísica Médica. Debate Editorial, Madrid, pp 31-48, 2002). Many of the companies producing MRI equipment were unable to deliver this technology to Cuba due to the bloqueo, the United States embargo against Cuba. Those who were later to advance the project's progress in scientific technology initially regarded the implementation of such a project in a developing country as unfeasible due to its complexity. But Fidel's belief and confidence and in turn the Cuban scientists' commitment to him and to Cuban science proved to be an undeniable factors for its success.

  13. 31 CFR 515.415 - Travel to Cuba; transportation of certain Cuban nationals.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Travel to Cuba; transportation of... CONTROL REGULATIONS Interpretations § 515.415 Travel to Cuba; transportation of certain Cuban nationals... or a returning resident of the United States, from Cuba to the United States, unless otherwise...

  14. Impact of periodic selective mebendazole treatment on soil-transmitted helminth infections in Cuban schoolchildren.

    NARCIS (Netherlands)

    van der Werff, S.D.; Vereecken, K.; van der Laan, K.; Campos Ponce, M.; Junco Diaz, R.; Nunez, F.A.; Rojas Rivero, L.; Bonet Gorbea, M.; Polman, K.

    2014-01-01

    Objective: To evaluate the impact of periodic selective treatment with 500 mg mebendazole on soil-transmitted helminth (STH) infections in Cuban schoolchildren. Methods: We followed up a cohort of 268 STH-positive schoolchildren, aged 5-14 years at baseline, at six-month intervals for two years and

  15. Cuban Mass Media: Organization, Control and Functions. Journalism Monographs Number Seventy-Eight.

    Science.gov (United States)

    Nichols, John Spicer

    The mass media as interdependent parts of a larger social system both control and are controlled by other subsystems. The various combinations of control, in turn, determine the functions the media system will serve. In the 1960's, the Cuban mass media underwent frequent change that reflected the volatility of the revolutionary process. Today,…

  16. The education in values on professionals´ formation from a cuban perspective

    Directory of Open Access Journals (Sweden)

    Bárbara del C. Roba Lazo

    2014-12-01

    Full Text Available The education in values has been a topic broadly approached in the last decades by authors of different latitudes. In the social development, this constitutes a great problem in the formation of the individuals to who, the social relationships allow them to value, to transform the reality and to be educated, what leads to the formation of the personality. The Cuban universities, as entities open to the society, win more and more partisans in the conception that their purpose is not only to transmit knowledge in its closed environment, but on the contrary, they represent a main socialized agent of education in values aware of the social mission that has given to it by the society that is built, like a formative institution able to solve the necessities of the society. For that reason, it is demanded the integral formation of the professionals. In the work it is approached the education in values from the perspective o the current Cuban society necessities that demands the development of a humanist pedagogy sustained in axiological bases that defend a new pedagogic ethics. It is carried out an analysis of the socialized agencies and the agents in charge of this process, as well as the historical antecedents of the education in values from the Cuban point of view in the different contexts the topic has been studied, as well as the contributions from the Cuban pedagogy to the development of it, indispensable from the integral formation of the Physical Culture professionals.

  17. Hydrogen Evolution on Supported Incomplete Cubane-type [Mo3S4](4+) Electrocatalysts

    DEFF Research Database (Denmark)

    Jaramillo, Thomas; Bonde, Jacob Lindner; Zhang, Jingdong

    2008-01-01

    Electrocatalytic properties of biomimetic supported incomplete cubane-type [Mo3S4](4+) clusters are investigated. The activity toward the hydrogen evolution reaction (HER) is evaluated on both a high surface area gas diffusion electrode in a membrane electrode assembly and on highly orientated...

  18. 31 CFR 515.522 - U.S. assets of certain Cuban decedents.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false U.S. assets of certain Cuban decedents. 515.522 Section 515.522 Money and Finance: Treasury Regulations Relating to Money and Finance... availability of such documents, copies of certificates establishing the relationship of the heir to the...

  19. “Latin-African” Solidarity – The Cuban Civilian Mission in Angola, 1975-1991

    Directory of Open Access Journals (Sweden)

    Christine Hatzky

    2014-06-01

    Full Text Available From 1975 to 1991, almost 500,000 Cubans were actively involved in the Angolan independence struggle and in building up Angola as an independent nation. Most of them were soldiers, but they also included doctors, teachers, building workers, and technicians.

  20. Distinguishing Features of Cuban Children Referred for Professional Help Because of ADHD: Looking beyond the Symptoms

    Science.gov (United States)

    Schneider, Barry H.; Normand, Sebastien; Sotares deToro, Maria del Pilar; Santana Gonzalez, Yorkys; Guilarte Tellez, Jorge Antonio; Carbonell Naranjo, Migdalia; Musle, Miriam; Diaz Socarras, Felix Javier; Robaey, Philippe

    2011-01-01

    Objective: To distinguish Cuban children clinically referred because of ADHD from an at-risk community sample and a community control group in terms of symptoms, associated difficulties and impairment of family and peer relations. Method: Parents and teachers of 1,036 children (6-8 years old) completed an established ADHD rating scale and a…

  1. soirées Rock - Cuban salsa, bachata and Kizomba workshops

    CERN Document Server

    CERN Dancing Club

    2015-01-01

    The CERN Dancing Club organizes a Cuban salsa, bachata and Kizomba workshop open to everyone on Saturday 9 May in its B566 ballroom (See the poster). Furthermore, the club invites you to its Rock party. Club parties are free and open to everyone. You bring something to eat and the club offers the drinks (non alcoholic)    

  2. Cuban Education in Neo-liberal Times: Socialist Revolutionaries and State Capitalism

    Science.gov (United States)

    Malott, Curry

    2007-01-01

    This article outlines the events that have led to Cuba's current engagement with global capitalism and the implications for Cuban education. The author looks at what Noam Chomsky (1999) has repeatedly referred to as "Cuba's trouble making in the hemisphere," such as it is. The author answers the question, "Why does the US government…

  3. ADASIR system: a Cuban learning experience from accidents and promotion of radiation safety culture

    International Nuclear Information System (INIS)

    Ferro Fernandez, Ruben; Ilizastigui Perez, Fidel; Fuente Puch, Andres de la

    2010-01-01

    The Cuban Regulatory Authority is carrying out a National Program for fostering and development of Safety Culture taking into account the wide recognition of the Human factors contribution to radiological events. The program includes the introduction of new regulatory practices and initiatives in order to increase the safety culture in Cuban facilities. The most recent of those initiatives is the System for Radiological Event Analysis, Dissemination and Learning, called ADASIR (Initials of the System's name in Spanish). The main purpose of this system is to provide a better understanding and knowledge of any radiological event reported both in the country and abroad reducing, this way, the possibility of a new occurrence of a similar event in our facilities. A team of regulatory and external experts make together a detailed review of all available information about the event and identify possible root causes, failed barriers and other important data of national interest. The results of such review are documented and sent to any Cuban facility or organization with potential for similar occurrence according to the equipment and practices they have. The document includes an specific checklist which could be used by the facilities to make a self-assessment and evaluate theirs strength and weakness in regards to a similar event. This paper presents the main characteristics and results of this new experience of Cuban Regulatory Authority. (author)

  4. Contribution gives the cosmic radiation to the doses for exhibition to the natural radiation in the Cuban population

    International Nuclear Information System (INIS)

    Tomas Zerquera, J.; Peres Sanchez, D.; Prendes Alonso, M

    1998-01-01

    With the objective to specify the preponderant contribution the cosmic component the radiation in the dose that the Cuban population receives you carries out a program she gives mensurations she gives this component in the whole country

  5. Results of HBsAg examination with immunoelectrophoresis and radioimmunoassay in VPR, Laotian PDR and Cuban R

    Energy Technology Data Exchange (ETDEWEB)

    Michal, L.; Szilagyiova, M.; Zahradny, V.; Holan, J.; Krajnak, V. (Komenskeho Univ., Martin (Czechoslovakia). Lekarska Fakulta); Padurova, J. (Okresna Hygienicka Stanica, Zilina (Czechoslovakia))

    1984-06-21

    The results are compared of examining 112 Vietnamese, 30 Laotian and 50 Cuban citizens for HBsAg using IEP and RIA methods. Of the examined persons with no liver disorders HBsAg was found in 23 (31.5%) of the Vietnamese and 1 (2.5%) of the Cubans using the RIA method and only in 4 (5.5%) of the Vietnamese using the IEP method. Of the examined persons with liver disorders RIA found HBsAg in 12 (30.8%) of the Vietnamese, 5 (71.4%) of the Laotians and 2 (20.0%) of the Cubans while with IEP only in 3 (7.7%) Vietnamese 2 (28.6%) Laotians and 1 (10.0%) of the Cubans examined.

  6. The Cuban Missile Crisis of 1962: A Case Study of the Tailored Use of Instruments of National Power

    National Research Council Canada - National Science Library

    Charney, Sean S

    2008-01-01

    President Kennedy and the EXCOM were able to achieve foreign policy success during the Cuban Missile Crisis because of their ability to tailor the pertinent IOPs and implement them to reach a desired...

  7. 78 FR 9573 - Delegation of Authority To Suspend the Provisions of Title III of the Cuban Liberty and...

    Science.gov (United States)

    2013-02-08

    ... Authority To Suspend the Provisions of Title III of the Cuban Liberty and Democratic Solidarity (LIBERTAD... Liberty and Democratic Solidarity (LIBERTAD) Act of 1996 (Public Law 104-114; 22 U.S.C. 6021-6091), as...

  8. The Cuban scorpion Rhopalurus junceus (Scorpiones, Buthidae): component variations in venom samples collected in different geographical areas

    OpenAIRE

    Rodr?guez-Ravelo, Rodolfo; Coronas, Fredy I V; Zamudio, Fernando Z; Gonz?lez-Morales, Lidia; L?pez, Georgina Espinosa; Urquiola, Ariel Ruiz; Possani, Lourival D

    2013-01-01

    Backgound The venom of the Cuban scorpion Rhopalurus junceus is poorly study from the point of view of their components at molecular level and the functions associated. The purpose of this article was to conduct a proteomic analysis of venom components from scorpions collected in different geographical areas of the country. Results Venom from the blue scorpion, as it is called, was collected separately from specimens of five distinct Cuban towns (Moa, La Poa, Limonar, El Chote and Farallones)...

  9. People on the Edge See More. A Conversation with the Cuban-American Writer Cristina García

    Directory of Open Access Journals (Sweden)

    Àngels Carabí

    2010-06-01

    Full Text Available L'entrevista amb l'escriptora cubano-americana Cristina Garciacute;a explora el tema de la identitat cubanoamericana i desvetlla la riquesa literagrave;ria que sorgeix de la fusioacute; de dues cultures, la cubana i la nord-americana, i com aquesta fusioacute; innova la literatura nord-americana tradicional. En la seva novelmiddot;la, emDreaming in Cuban/em (1992, l'escriptora explora els efectes de la Revolucioacute; castrista des de la perspectiva de les dones cubanes que van quedar-se a l'illa, aixiacute; com de les dones que emigraren als Estats Units. The conversation with Cuban-American writer Cristina Garciacute;a explores what it means to be Cuban-American, and reveals how to grow bicultural enriches mainstream American literature. In her novel emDreaming in Cuban/em (1992, the writer explores the effects of the Castro Revolution from the perspective of Cuban women who remained in Cuba, as well as from the experience of women who emigrated to the United States.

  10. Morphological measurements and body indices for Cuban Creole goats and their crossbreds

    Directory of Open Access Journals (Sweden)

    Edilberto Chacón

    2011-08-01

    Full Text Available In this work, linear body measures were taken and production indices calculated for 100 Cuban Creole goats and 100 crossbred goats in order to aid in the characterization of animal genetic resources in Cuba. Low variation was found for all indices of the Creole goats, showing homogeneity between the groups of animals studied. Most of the functional indices are related to the milk biotype which is in agreement the possible origin of the breed from animals of the Iberian Peninsula and Canary Islands. The crossbreds were more varied, mostly due to undesigned disorganized crossing. These data may help in identifying a commercial niche for the breed and contribute to in situ conservation of the Cuban Creole goat.

  11. Hepatitis B virus exposure in human immunodeficiency virus seropositive Cuban patients

    Directory of Open Access Journals (Sweden)

    Licel Rodríguez

    2000-04-01

    Full Text Available In order to estimate the prevalence of serological markers of exposure to Hepatitis B Virus (HBV, 295 subjects were selected at random from the National Registry of human immunodeficiency virus positive subjects. Evidence of exposure to HBV was defined as: testing Hepatitis B surface antigen (HBsAg and anti-Hepatitis B core antigen (anti-HBc positive or anti-HBc positive only. Overall, 133 (45.5% were positive for anti-HBc and 15 (5.1% resulted positive to HBsAg. Significant statistical association was found between male sex and exposure to HBV (p<0.01. Homosexual or bisexual behavior was found to be strongly associated to HBV exposure (p<0.001. In conclusion, the prevalence of HBV serological markers is higher in Cuban HIV positive subjects compared to the Cuban general population.

  12. Adoption and adaptation of the International Basic Safety Standards to Cuban reality

    International Nuclear Information System (INIS)

    Quevedo Garcia, J.R.; Lopez Forteza, Y.; Sarabia Molina, I.; Alonso Gonzalez, I.; Guillen Campos, A.

    2001-01-01

    The new Cuban regulatory document homologous to the 'International Basic Safety Standards for protection against ionizing radiation and for the safety of radiation sources' (IBSS) will be published in the near future. The document was accomplished on the basis of the IAEA Safety Series No 115 to which text it was performed the needed changes in order adapt it to the national reality in the field of protection and safety. The document is published with the consensus of the principal organizations and entities with specific responsibilities in relation to protection and safety as well as the consensus of the entities providing services in this field. The present paper presents and discusses the basic aspects included in the Cuban document that in one or another way should be considered as precision in reference to the IBSS. (author)

  13. Pb-210 behaviour in environmental samples from the Cuban east in 1993

    International Nuclear Information System (INIS)

    Perez Tamayo, L.; Suarez Pina, W.

    1996-01-01

    A method based in alpha and beta gross counting, is applied to research behaviour, during 1993, of Pb-210 in atmospheric depositional samples of six sites of the Cuban east. In five of these points, located distant from Cuban centers, the average Pb-210 aport to measured beta activity is predominant (80 +- 20 %) and maximum (> 50 % annual) is observed in coincidence with the first rain full peak. Such regularity may be explained, if assumption is made that principal source of Pb-210 are the continental air masses penetrating the insular atmosphere in winter and that mentioned radionuclide is deposit later with the spring rainfalls. In the sixth point, located at industrial zone, the alpha-beta activities rates are abnormally high, with maximums of 1.5 and 2.4 faced with peak raining and wet months respectively and probably originated by the input atmosphere of rich s in alpha emisors particles from industrial processes

  14. Emergency Response to Earthquake in Chile: Experience of a Cuban Field Hospital.

    Science.gov (United States)

    Pérez, Carlos R

    2015-07-01

    This paper presents the author's experiences in deploying and later establishing a Cuban field hospital in response to the major earthquake that struck Chile in February 2010. It also reveals the initial difficulties the medical team faced and how collaboration with local social, medical and military partners contributed to response efficiency, and highlights the importance of Cuba's international health cooperation, especially in emergency situations. Over 254 days, Cuban health professionals had 50,048 patient encounters (outpatient visits and hospitalizations), a daily average of 197. They performed 1778 surgeries (1427 major, 80.2% of total) and accumulated valuable experience in managing a field hospital in a disaster situation. KEYWORDS Earthquake, humanitarian aid, health care, emergency response, disaster medicine, logistics, Chile, Cuba.

  15. Normalization of US-Cuban Relations: Obama Doctrine and International Security in the Western Hemisphere

    Directory of Open Access Journals (Sweden)

    Piotr Łaciński

    2015-12-01

    Full Text Available Strained relations between the US and Cuba after the victory of the Cuban revolution were a permanent element of the destabilization of international security in the Western Hemisphere. During the Cold War, this destabilization was a function of the East-West confrontation. Since the end of Cold War the importance of Cuba as a Western Hemisphere entity hostile to the United States has diminished radically. Definite steps to normalize relations with Cuba have been taken only in 2014. The media named the change of policies of the US towards Cuba (and Iran as the Obama Doctrine. This article will try to prove that the continuation of the confron-tational and hostile US-Cuban relations after the collapse of the Eastern bloc was an exceptional and "unnatural" phenomenon from the perspective of realistic school of international relations, both for Washington and Havana.

  16. Photovoltaic Solar Energy as a Chance and a Need for the Development of the Cuban Economy

    International Nuclear Information System (INIS)

    Casal Rivera, Yanet; Parúas Cuza, Rafael

    2017-01-01

    The photovoltaic systems connected to the electric network as a great opportunity and a need for the Cuban economy. This works intends to present an analysis of a lot of aspects related to the economic feasibility of using solar energy generated by roof-mounted small photovoltaic systems such as some aspects related to the economic and environmental analysis and their contribution to the National and Township development as well as a study of the costs behaviors and its comparison concerning prices in reference to the normal electric power and the new investments for the minor sells of these systems to common people. Finally there is a proposition of actions to encourage the use of this kind of energy in the different sectors of the Cuban economy. (author)

  17. "Nation or death": the Cuban Revolution and the 1990’s crisis.

    Directory of Open Access Journals (Sweden)

    Julian Araujo Brito

    2012-05-01

    Full Text Available This article aims to analyze the survival conditions of the cuban political regime from the end of the cold war, during the “Special Period”. The breakdown of the socialist bloc between 1989 and 1991 certainly represented an important change of direction for the Cuban Revolution and generated an economic crisis of great proportions, which put at risk the very permanence of the revolutionary regime. However, it was allowed to survive - despite the diffi cult inner and outer conditions and the frequent contrary predictions – to its most delicate moment since the origin in 1959. Although there was a plan for economic reforms and policies to a lesser extent, the survival of the regime was bounded to its nationalistic appeal, what was the political legitimacy before the socialism crisis, as well as the defense of the social achievements of the 30 years of the revolutionary regime.

  18. Creating a safety culture in the regulatory authority: The Cuban experience

    International Nuclear Information System (INIS)

    Ferro Fernandez, R.; Guillen Campos, A.

    2002-01-01

    The Cuban regulatory authority has been working during several years for the fostering and development of a high Safety Culture level in nuclear activities in the country. As starting point to achieve this objective the assessment of the Safety Culture level in the regulatory authority performance was considered an important issue. For this purpose a preliminary diagnosis was carried out by means of a national survey that allowed identifying some areas of the regulatory activity that required improvements in order to achieve a higher Safety Culture and to immediately implement appropriate actions. Two of the most important actions undertaken were: the statement of the regulatory authority Safety Policy which governs and determines the performance of this organization and its staff and also the implementation of a new interaction practice at top level between the regulatory authority and the utilities of the nuclear sector through the Annual Regulatory Conference. The present paper summarizes these two introduced practices into the Cuban regulatory activity. (author)

  19. Slightly Independent and Illegal: Yaima Pardo’s films OFF_LINE and SWITCH ON at the Crossroads of Literacy, Inclusion and Digital Filmmaking in Contemporary Cuban Cinema

    OpenAIRE

    Farrell, Michelle Leigh

    2016-01-01

    Cuban filmmaker Yaima Pardo creates a participatory digital literacy campaign in her documentary OFF_LINE (2013) and documentary series SWITCH ON (2013-present). Through her work she establishes a multi-directional dialogue on digital literacy. Beyond this call for digital literacy, Pardo herself is part of a contemporary generation of Cuban filmmakers, nuevos realizadores that depend on digital technology to make, distribute and exhibit their works despite their illegal status as the Cuban s...

  20. Desorption kinetics of phosphorus inn Cuban soils using P-32 as radiotracer

    International Nuclear Information System (INIS)

    Alvarez, F.; Palacios, Z.; Fernandez, N.; Nuviola, A.

    1990-01-01

    Desorption kinetics of previously sorbed phosphate was studied in nine Cuban soils, using isotopic techniques, The solution employed for sorption technique was KH 2P O 4 0,004 M in CaCL 2 0,001 M, with a specific activity of 1.85 kBq P-32/m1, and for desorption CaCl 2 0,01 M. The curves obtained showed that maximum desorption occurred in soils with low capacity for phosphate fixing

  1. Industrial property for science’s management, technology and innovation in Cuban State companies

    OpenAIRE

    Contreras Villavicencio, Dulce María; Suárez Gutiérrez, Evelio; Moreno Cruz, Marta Milagros; Correa Álvarez, Pascual

    2017-01-01

    The paper synthesizes some research on industrial property aspects from the socio-legal perspective and financial accounting. Its focus to the socialist state enterprise adaptation in his economic fact, social and environmental responsibility as a fundamental Cuban model reach, competitiveness and high performance in socialist state enterprise. It outlines criteria on the ordering and implementation of industrial property through the management of science and technology, protection and dissem...

  2. Making sense of Santería: three books on Afro-Cuban religion

    Directory of Open Access Journals (Sweden)

    Stephan Palmié

    1996-07-01

    Full Text Available [First paragraph] Santeria from Africa to the New World: The Dead Sell Memories. GEORGE BRANDON. Bloomington: Indiana University Press, 1993. x + 206 pp. (Cloth US$31.50 Working the Spirit: Ceremonies of the African Diaspora. JOSEPH M. MURPHY. Boston: Beacon, 1994. xiii + 263 pp. (Cloth US$ 25.00 Walking with the Night: The Afro-Cuban World of Santeria. RAUL CANIZARES. Rochester VT: Destiny Books, 1993. xii + 148 pp. (Paper US$ 12.95 Since 1959, the steady exodus from revolutionary Cuba has led to the gradual emergence of an Afro-Cuban religious diaspora in the United States. While this phenomenon has attracted scholarly attention for some time, the literature has grown particularly rapidly in recent years. It is, perhaps, not entirely fortuitous that a spate of current academic publications on the subject coincided with a scramble by the popular media to exploit its exotic potential in the context of the 1993 U.S. Supreme Court case on animal sacrifice. Clearly, what has come to be called an Afro-Cuban "cultic renaissance" in exile holds promise both for sensationalist journalism and certain kinds of theoretical projects. Partly articulating with older, but politically reinvigorated debates about the relations between African and African-American cultures, partly addressing fundamental questions about conventional models of cultural boundedness and coherence, and, finally, calling into question both popular and academic notions of "modernity" (and its inevitable counterpart "tradition", the 292 New West Indian Guide/Nieuwe West-Indische Gids vol. 70 no. 3 &4 (1996problems posed by the emergence of an Afro-Cuban religious diaspora in the United States present a timely challenge.

  3. Soil-plant relation in Cuban sugar cane by instrumental neutron activation analysis

    International Nuclear Information System (INIS)

    Diaz Riso, O.; Griffith Martinez, J.

    1996-01-01

    This paper shows the result of soil-plant relation in samples from Cuban sugar canes of different soil types and cane varieties, using the INAA from thermal reactor. The behaviour of minor and trace elements in sugar cane leaves is uniform and independent of sugar cane variety or type of soil. The soil-plant relation shows four principal groups of micro elements, according to their absorption by the plant

  4. Contribution to the X-rays Diagnosis to radiation dose of the Cuban population

    International Nuclear Information System (INIS)

    Naranjo Lopez, A.; Barreras Caballero, A.; Damera Martinez, A.; Brigido Flores, O.

    1998-01-01

    The work shows preliminary outcomes from the evaluation of the contribution made by X-rays diagnosis to the radiation dose received by the Cuban population. The study employs statistics from tests made in the country during 1985 -1993. The limits from change interval of the effective dose per test are determined using most widely made tests to which patient's lower and higher exposure parameters correspond

  5. Granma: Cuban News and Propaganda Analysis for the Period, 1-31 December 1984.

    Science.gov (United States)

    1984-12-01

    and Salvador Allende . e The CIA protects Joseph Mengele and other Nazi war criminals. * Drugs and terrorists. Miami, Florida is the center for the...base for supplying military aid to El Salvador and Hon- duras. 9 Terrorists in Nicaragua. The American supported contras murdered 21 innocent civilian...Cuban propaganda pertaining to Latin American countries: e The guerrillas in El Salvador have completely paralyzed the national transportation system

  6. Social workers’ construction of “family” in Cuban context: Ideas for a debate

    Directory of Open Access Journals (Sweden)

    Angela Isabel Peña Farias

    2015-12-01

    Full Text Available This paper presents preliminary research about the process of the construction of concepts in social work. In this case, it is referred to as a social worker’s construction of “family” as a concept and as a field of practice in a current Cuban context. Based on an exploratory and qualitative research design, the paper presents an analysis that also opens to the discussion about social work with families in Cuba. The findings shows that Cuban social workers think of family as a group with cohabitation and affinity, which is more important than consanguinity, as a dimension for family definitions. They also point at structures of family, special bonds in family network and the social internal and external functions of family in their definitions. Among these functions, the transmission of cultural values, as well as the emotional support and shelter for members, seems relevant.Regarding family as a field of practice, they all share the criteria that is necessary for practice to develop a contextual analysis of each situation that goes from macro-contextual aspects to the micro-reality of family. The importance of structural matters and their impact on family functions is also a common idea, which is nucleated around a multigenerational reality of Cuban families and evaluated as a positive or negative impact depending on the case in question.They consider social work with families, and social work in general, to be in a critical situation in relation to losing professionalization and social recognition. The reasons explaining these ideas have to do with the instability of social work institutionalization and the recent retraction of social services. These variations have obeyed the changes in a Cuban context that affects the entire welfare system and social work’s position in it.

  7. Corporate Social Responsibility: a proposal for its assessment in Cuban hotel facilities

    Directory of Open Access Journals (Sweden)

    Yusmelys Ferrales-Arias

    2017-12-01

    Full Text Available The present article, after addressing the fundamental elements that characterize the corporate social responsibility approach, proposes a procedure for its evaluation in Cuban hotel facilities through the use of instruments based on indicators developed for this purpose. The study focuses on measuring the degree of social responsibility and the level of responsible performance that allows the installation management to properly align the practices of social responsibility with the installation strategy.

  8. Analysis of the Socio-Educational Dimension of the Cuban Woman in Negra of Wendy Guerra

    Directory of Open Access Journals (Sweden)

    Pilar Navarro Galiano

    2016-12-01

    Full Text Available This job is based on the novel written by the author Wendy Guerra, Negra. Firstly, a study about social and education situation of the cuban woman since the colonial phase to the present day is accomplished as well. Finally, the main topics in her novel Negra such as racism, sex, witchcraft, music, magic and religion will be analysed.

  9. Immobilization of radioactive waste through cementation using Cuban zeolitic rock as additive

    International Nuclear Information System (INIS)

    Chales Suarez, G.; Castillo Gomez, R.

    1997-01-01

    The cementation of both simulated and real low level aqueous wastes using Cuban zeolite as additive is described. Mechanical characteristics and leach testing of the cemented waste forms has been studied. The results obtained have shown that the presence of zeolite in the cemented waste for reduces considerably the leach rates of Cs and Co and moreover, mechanical characteristics (set time and compressive strength) are better when compared with direct cementation of aqueous wastes. (author). 13 refs, 8 tabs

  10. Energetic and economic evaluation of solar thermal and photovoltaic cooling system in Cuban hotel

    International Nuclear Information System (INIS)

    Díaz Torres, Yamile; Valdivia Nodal, Yarelis; Castellanos Molina, Luis Miguel; Torres del Toro, Migdalia; Monteagudo Llanes, José

    2015-01-01

    The present paper discusses the energetic and economic feasibility of using two configurations of solar cooling in a Cuban Hotel. The air conditioning hybrid system schemes are: conventional system (Chiller) interconnected in parallel with a solar- powered absorption cooling system (SACS); and a photovoltaic cooling system (PCS). There were analyzed by methodologies and thermodynamic principles governing these technologies. The results show that their uses are alternatives for reducing energy consumption and environmental impact. (full text)

  11. The Soviet-Cuban Connection in Central America and the Caribbean

    Science.gov (United States)

    1985-04-01

    is on such ideals as " socialistA Strong Supporter of solidarity," Castro is known to charge many of these Communist Expansion countries for Cuban...Nacion Internacional (San Jose, Costa !Pop Rica), November 20-24, 1983. 19. This speech was carried in Spanish in its entirety in La Prensa (San Pedro...Salvador, on July 8, 1984. on Central America, prepared for the Presi- dent. Henry A. Kissinger, Chairman. Washing- 45. La Nacion Internacional (San Jose

  12. THANK GOD FOR BOBBY: ROBERT KENNEDY AND THE CUBAN MISSILE CRISIS

    Science.gov (United States)

    2017-06-01

    Robert Kennedy, then a Senator from New York, decided to announce his candidacy for President on March 16th. After a decisive primary win in...i “THANK GOD FOR BOBBY” ROBERT KENNEDY AND THE CUBAN MISSILE CRISIS BY MAJOR JUSTIN CHANDLER A THESIS...members of Kennedy’s staff, most importantly his brother Robert , facilitated backchannel negotiations with the Soviet Union through Ambassador Dobrynin

  13. Application of cubane-type structures to hydro-treatment catalysis; Application des structures d'architecture cubane a la catalyse d'hydrotraitement

    Energy Technology Data Exchange (ETDEWEB)

    Marchand, K.

    2003-11-01

    [Mo{sub 3}S{sub 4}(H{sub 2}O){sub 9}]{sup 4+} has been prepared and supported on zeolites H-USY and NaY. Using this cluster as a precursor for HDT catalysts has many advantages: it is cationic, already in a sulfided form, and a promoter such as a second metal M' such as Cu, Ni or Pd can be incorporated to form Mo{sub 3}M'S{sub 4}{sup 4+}. The cubane structure was found unchanged after loading in the case of NaY (EXAFS, XPS) and although TEM showed that Mo was mainly on the outer surface of the zeolite crystals, DRX confirmed that a modification of the counter ion also occurred, and an isotherm was obtained with NaY zeolite. A thermal stability study was led under N{sub 2} and a mixture of H{sub 2}/H{sub 2}S to optimize the pretreatment of the catalysts. Those were subsequently pre-sulfided and tested in toluene hydrogenation and their activities with both types of zeolites turned out to be the same or even better than that of catalysts prepared by the classical route. An application to mixed cubane-type structures is also reported. (author)

  14. Prendas-Ngangas-Enquisos: turbulence and the influence of the dead in Cuban-Kongo material culture.

    Science.gov (United States)

    Ochoa, Todd Ramón

    2010-01-01

    Cuban-Kongo praise of the dead in Havana turns insistently around complex agglomerations of materials called "prendas,"ngangas," and "enquisos." This article addresses the ontological status of "prendas-ngangas-enquisos," which practitioners of Cuban-Kongo affliction practices care for as entities that determine the very possibility of their healing and harming craft. Cuban-Kongo societies of affliction, in Havana collectively referred to as "Palo," stake their claim to influence others in and through these entities. In this essay I seek to position the influence generated in prendas-ngangas-enquisos as a problem for Euro-American materialism, to be addressed not through symbolic or representational solutions but, rather, by refocusing the problem itself via alternate distributions of its epistemological, historical, and ethnographic elements. Contextualized within ethnographic description, I first propose that prendas-ngangas-enquisos do not conform to dialectical logic, and should thus be positioned conceptually as something other than "objects" or "fetishes." From there, I consider Creole turns on the term prenda and explore scholarly accounts of 19th-century Cuban slavery and manumission, which I place alongside what is known about pawn slavery among BaKongo people prior to and during the Atlantic slave trade. Having established a basic series of conceptual and historiographic coordinates, I then suggest ethnographically how prendas-ngangas-enquisos come to command others, thereby guaranteeing Cuban-Kongo healing and harming sovereignty in Cuba today.

  15. Requirements to cuban reinforcing steel under seismic demand; Exigencias al acero de refuerzo cubano ante la demanda sismica

    Energy Technology Data Exchange (ETDEWEB)

    Frometa Salas, Z. P.; Villalonga Vianez, J. A.

    2009-07-01

    The behaviour of steel manufactured according to the Cuban standard NC 7:02 is studied, in order to evaluate about the conformance to requirements of the seismic design. Steel bars of Grade G-40 and G-60, of all commercial diameters between 10 and 32 mm, were test with this purpose. An experimental program was developed, that include dimensional verifications, tensile testing, ben and rebend, hardness testing and chemical composition tests. The results showed that steel bars satisfy geometric and tensile requirements of Cuban standard, however, some tested samples fulfill the demands that establish some codes about the required ductility to adequate perform of building of reinforced concrete where prevalence the earthquake. Conclusions about the necessity to consider in the future Cuban standard, special requirements to steel that assist the necessities of the earthquake engineering. Proposals are suggested to guarantee the ductile behaviour of the steel of national production. (Author)

  16. Double Trouble

    NARCIS (Netherlands)

    Elsaesser, Thomas; Kievit, Robert; Simons, Jan

    1994-01-01

    Double Trouble highlights the career of Dutch scriptwriter and television producer Chiem van Houweninge, well-known for his long-running TV comedy series and as author of episodes for TV detective series. Double Trouble gives Van Houweninge's own views on writing and filming in television prime

  17. Endemics under threat: an assessment of the conservation status of Cuban bats

    Directory of Open Access Journals (Sweden)

    Carlos Mancina

    2007-07-01

    Full Text Available Abstract Reviewing available information from published literature, museum database, personal communications and from the authors own field data, the conservation status of Cuban bats has been assessed using six qualitative parameters: abundance, distribution, roosting habits, aggregation level, forest dependence, and degree of endemism. The resulting Red List is analogous to that of the IUCN, species having been included in four categories of risk. Four out of the 26 extant bats of Cuba should be considered endangered, four vulnerable to extinction, twelve potentially threatened, and six in a stable situation. Most of the species of bats endemic to Cuba are under some form of threat. The major threats to the survival of Cuban bats are the destruction of forests and the modification of caves, the latter being critical habitats for the mostly cave-dwelling Cuban bat fauna. We argue that its conservation should be the result of a cooperative effort promoting research and habitat management. Riassunto Endemismi minacciati: una valutazione dello stato di conservazione dei chirotteri cubani. Lo stato di conservazione dei chirotteri cubani è stato valutato a partire da sei parametri qualitativi: abbondanza, distribuzione, roost utilizzati, livello di aggregazione, dipendenza da ambienti forestali e grado di endemismo. A questo scopo sono state esaminate le informazioni bibliografiche, i database dei musei e dati non pubblicati, in parte raccolti dagli stessi autori. La Lista Rossa risultante è analoga a quella dell’IUCN, comprendendo quattro categorie di rischio crescente. Delle 26 specie attualmente presenti a Cuba, 4 sono da considerarsi in pericolo di estinzione, 4 "vulnerabili", 12 "potenzialmente minacciate" e 6 "stabili". La maggior parte delle specie endemiche è in qualche misura minacciata. La deforestazione e l’alterazione delle cavità carsiche, che costituiscono un habitat

  18. Molecular Mixed-Metal Manganese Oxido Cubanes as Precursors to Heterogeneous Oxygen Evolution Catalysts.

    Science.gov (United States)

    Suseno, Sandy; McCrory, Charles C L; Tran, Rosalie; Gul, Sheraz; Yano, Junko; Agapie, Theodor

    2015-09-14

    Well-defined mixed-metal [CoMn3 O4 ] and [NiMn3 O4 ] cubane complexes were synthesized and used as precursors for heterogeneous oxygen evolution reaction (OER) electrocatalysts. The discrete clusters were dropcasted onto glassy carbon (GC) and indium tin oxide (ITO) electrodes, and the OER activities of the resulting films were evaluated. The catalytic surfaces were analyzed by various techniques to gain insight into the structure-function relationships of the electrocatalysts' heterometallic composition. Depending on preparation conditions, the Co-Mn oxide was found to change metal composition during catalysis, while the Ni-Mn oxides maintained the NiMn3 ratio. XAS studies provided structural insights indicating that the electrocatalysts are different from the molecular precursors, but that the original NiMn3 O4 cubane-like geometry was maintained in the absence of thermal treatment (2-Ni). In contrast, the thermally generated 3-Ni develops an oxide-like extended structure. Both 2-Ni and 3-Ni undergo structural changes upon electrolysis, but they do not convert into the same material. The observed structural motifs in these heterogeneous electrocatalysts are reminiscent of the biological oxygen-evolving complex in Photosystem II, including the MMn3 O4 cubane moiety. The reported studies demonstrate the use of discrete heterometallic oxide clusters as precursors for heterogeneous water oxidation catalysts of novel composition and the distinct behavior of two sets of mixed metal oxides. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. Knowing the Place for the First Time: A Cuban Exile’s Story

    Directory of Open Access Journals (Sweden)

    Alejandra Morena

    2009-03-01

    Full Text Available Playa Abierta is a modern beach-side resort, one hundred kilometres west of Havana. Developed as a private resort in the 1950s, it was seized by the new revolutionary Cuban government in 1959 after its owner fled precipitately to Miami. This autobiographically centred and personally narrated paper reviews the history of Playa Abierta 1956 – 2006 through the eyes of a Cuban New Zealander ‘Marta’ whose uncle first developed the estate. In 1956 her holidays spent at Playa Abierta as a little girl were her most treasured Cuban moments. ‘At this altar’, she says, ‘my uncle was the high priest.’ In 1996 - after a 36-year absence from her native land - she returned for a visit, the only member of her extended family to have done so. Boldly and unannounced she walked through her uncle’s house – by then converted into a military recreational camp. On a subsequent visit, she met with members of her uncle’s domestic staff whose relationship to that same loved beach was by then of many decades. Whose Playa Abierta was she re-visiting now? Who were the true claimants to that family sacred site? Today as she reflects on the private and public meaning of Playa Abierta, her exultation has given way to more complex feelings. The wonder at re-discovering the beach’s beauty was overladen with the guilt of returning to Cuba while still under Castro’s communist rule. Her sense of belonging was later undermined by a sad realisation that those who had stayed behind were also Playa Abierta’s claimants. Above all, she is torn between family loyalties and the promise of a Revolution betrayed.

  20. High-Resolution Infrared Spectroscopy of Cubane, C_8H_8

    Science.gov (United States)

    Boudon, Vincent; Pirali, Olivier; Gruet, Sébastien; D'accolti, Lucia; Fusco, Caterina; Annese, Cosimo

    2014-06-01

    Carbon-cage molecules have generated a considerable interest from both experimental and theoretical point of views. We recently performed a high-resolution study of adamantane (C10H16), the smallest hydrocarbon cage belonging to the diamandoid family. There exist another family of hydrocarbon cages with additional interesting chemical properties: the so-called Platonic hydrocarbons that comprise dodecahedrane (C20H20) and cubane (C_8H_8). Both possess C-C bond angles that deviate from the tetrahedral angle (109.8°) of the sp^3 hybridized form of carbon. This generates a considerable strain in the molecule. Cubane itself has the highest density of all hydrocarbons (1.29 g/cm^3). This makes it able to store larges amounts of energy, although the molecule is fully stable. Up to now, only one high-resolution study of cubane has been performed on a few bands [2]. We report here a new wide-range high-resolution study of the infrared spectrum of cubane. The sample was synthesized in Bari upon decarboxylation of 1,4-cubanedicarboxylic acid thanks to the improved synthesis of literature [3]; its {}1H and 13C NMR, FTIR, and mass spectrometry agreed with reported data [4]. Several spectra have been recorded at the AILES beamline of the SOLEIL French synchrotron facility. They cover the 800 to 3100 cm-1 region. Besides the three infrared-active fundamentals (ν10, ν11 and ν12), we could record many combination bands, all of them displaying a well-resolved octahedral rotational structure. We present here a preliminary analysis of some of the recorded bands, performed thanks the SPVIEW and XTDS software, based on the tensrorial formalism developed in the Dijon group [5]. [1] O. Pirali, V. Boudon, J. Oomens, M. Vervloet, J. Chem. Phys., 136, 024310 (2012). [2] A. S. Pine, A. G. Maki, A. G. Robiette, B. J. Krohn, J. K. G. Watson, Th. Urbanek, J. Am. Chem. Soc., 106, 891-897 (1984). [3] P. E. Eaton, N. Nordari, J. Tsanaktsidis, P. S. Upadhyaya, Synthesis, 1, 501, (1995). [4] E

  1. The legacy of Adolfina Cossío Esturo to the cuban pedagogy

    Directory of Open Access Journals (Sweden)

    Giselle María Méndez-Hernández

    2017-06-01

    Full Text Available The contribution of the investigation is guided to the systematization of the pedagogic conception of Adolfina Cossío Esturo, from the appreciation of her career in educative institutions of the oriental zone. Like this, helps the educational improvement, while the rescue of her work can promote the consolidation of the ethic-pedagogic values of the teacher, as well as his professional action ways, this way tribute to the integral formation of the university student. On the other side, the study of Adolfina open a new space dedicated to the rescue of the Cuban pedagogic bases, particularly in the dimension of the regional.

  2. Modificaciones en las calderas igneotubulares cubanas // Modifications in the Cuban boilers of fire tube

    Directory of Open Access Journals (Sweden)

    I. Pérez Mallea

    1998-01-01

    Full Text Available El objetivo de este trabajo es optimizar y diseñar las calderas igneotubulares nacionales, incluyendo las de inversión de llama yagua caliente. Con este fin se creo un software como soporte científico técnico que permite realizar los diferentes cálculosverificativos a través de los cuales se optimiza._________________________________________________________________________Abstract .The objective of this work is the optimizing and designing of the Cuban boilers of fire tube, including those of inverting offlame and hot water. A software have been developed as technical scientific supper for different calculations and optimizingprocess.

  3. A Witness to French-Cuban Cooperation in Physics in the 1970s

    Science.gov (United States)

    Cernogora, Jacqueline

    In France in 1968 many lively discussions and debates took place at several universities and laboratories in which official authority was questioned. Very often in such debates someone would stand up and ask the previous speaker: "Who are you to assert such a thing?" or "From where are you speaking?" Forty years later, to avoid such questions, I will say right away "from where" I am writing this text, which is by no means an exhaustive study of French-Cuban collaboration in physics at that time, but rather a personal recollection.

  4. [Catalogue of neritic-benthonic echinoderms (Echinodermata: Asteroidea and Ophiuroidea) from the Cuban Archipelago].

    Science.gov (United States)

    Abreu-Pérez, Mercedes; Solís-Marín, Francisco A; Laguarda-Figueras, Alfredo

    2005-12-01

    This is an updated taxonomic catalogue of neritic-benthonic Echinodermata (Asteroidea and Ophiuroidea) from Cuba, that includes locality, range, habitat and depth where each species is found. The species list is based on the collections of the Oceanology Institute; Havana; the "Felipe Poey" Museum (Havana University) and the National Museum of Natural History, Smithsonian Institution, Washington D.C. Specimens for those collections were captured by a variety of field techniques, narcotized with Cloral hydrate, fixed in formalin and stored in 70-80% alcohol. A total of 75 species have been identified from Cuban waters: Asteroidea (20 species) and Ophiuroidea (55 species).

  5. The cooperative a road for the economic and social development in the Cuban pattern

    Directory of Open Access Journals (Sweden)

    Claudio Alberto Rivera Rodríguez

    2014-06-01

    Full Text Available The present work has as purpose, to evaluate the antecedents, development, current situation and perspectives of the cooperative in the Cuban economic pattern. In the article, they are studied, from the antecedents of the emergence of the agricultural cooperative, until their stages, making emphasis in the problems that affect the normal development in these ways of property and administration in the objective and subjective order. Finally he/she is carried out a brief analysis of the emergence of the cooperatives in other sectors of the economy, evaluating the premises and importance of this transformation in the economic, productive and social order.

  6. Study of external exposure doses received by Cuban population due to terrestrial component of the environmental radiation sources

    International Nuclear Information System (INIS)

    Zerquera, Juan Tomas; Prendes Alonso, Miguel; Brigido Flores, Osvaldo; Hernandez Perez, Alberto

    2001-01-01

    The work presents the results of the study carried out to evaluate the doses that the Cuban population receives for the external exposition to the terrestrial component of the environmental sources of radiation. Starting from the carried out measurements it was possible to estimate the doses effective representative annual stockings that the Cuban population receives for external exposition to the terrestrial radiation, considering the permanency in indoors and outdoors. The dose received due to this component was 180±14 mSv/year. These values are in the range of those reported internationally. (author)

  7. Each Sheep with Its Mate: Marking Race and Legitimacy in Cuban Catholic Parish Archives, 1890-1940

    Directory of Open Access Journals (Sweden)

    Enid Lynette Logan

    2010-07-01

    Full Text Available Examines the politics of racialization in Cuba from the period after full emancipation to the restrictive immigration policy of the 1930s, through an analysis of the record-keeping practices of the Cuban Catholic Church. The study uses baptismal and marital records to record information on the intimate, racialized, and gendered domains of Cuban social life. Author points out that certain policies adopted by religious authoritites gestured towards inclusivism and egalitarianism, others served to reinforce hierarchies based upon race and rank.

  8. ‘La Comida Mambisa’: food, farming, and Cuban identity, 1839-1999

    Directory of Open Access Journals (Sweden)

    Shannon Lee Dawdy

    2002-01-01

    Full Text Available Describes how Cuba developed a countrywide system of food meaning and production in the mid-19th c. that became a national, and eventually "nationalist", cuisine during Cuba's revolutionary moments. Author explains how the centrality of food within Cuban national identity was strongly related with the valency associated with the subsistence farming on small family farms ("sitios", producing these native foods and Caribbean ingredients, e.g. cassava, guava, and sweet potatoes. The self-sufficiency of these small farmers was in emerging nationalist discourses opposed to the large-scale, export-oriented, colonial plantations and to slavery. Many small family farmers, of which many were ex-slaves, participated in the armed struggles in part to defend their right of independent, subsistence agriculture. Author outlines how since the early, mid-19th-c. Creole nationalism, Creole food and the small farms remained associated with authentic Cuban folk culture and with national identity, and related to independence struggles, and self-sufficiency, including during and after the 1959 Revolution.

  9. Overseas Hepatitis B Vaccinations Among Newly Arrived Cubans in Texas-2010-2015.

    Science.gov (United States)

    Lee, Deborah; Montour, Jessica; Fulton, Anna C; Benoit, Stephen R; Nelson, Noele P; Liu, Yecai

    2017-09-01

    We assessed hepatitis B virus (HBV) serologic results among newly arrived Cubans with vaccination documentation. We matched the post-arrival health assessment HBV serologic results of Cubans who arrived during 2010-2015 in Texas with their overseas hepatitis B (HepB) vaccination records in the CDC's Electronic Disease Notification database and calculated the proportion of those immune due to HepB vaccinations. Among 2123 who had overseas HepB vaccination and serologic results, 1072 (50.5%) had three valid documented doses of HepB. Of these 1072, 441 (41.1%) were immune due to HepB vaccination, 24 (2.2%), immune due to natural infection, 599 (55.9%), susceptible to HBV, and 8 (0.7%), HBV infected. Stratified by age, 21 (87.5%) of 24 children vaccination records on the U.S. Department of State overseas vaccination forms might be immune despite <10 mIU/mL anti-HBs response levels.

  10. Comparison of Major Immunoglobulins Intrathecal Synthesis Patterns in Ecuadorian and Cuban Patients with Angiostrongyliasis

    Science.gov (United States)

    Padilla-Docal, Bárbara; Dorta-Contreras, Alberto J.; Moreira, Juan M.; Martini-Robles, Luiggi; Muzzio-Aroca, Jenny; Alarcón, Fernando; Magraner-Tarrau, María Esther; Bu-Coifiu-Fanego, Raisa

    2011-01-01

    Angiostrongylus cantonensis meningitis was first reported in Cuba in 1981, and it was recently reported in South America. The aim of this paper is to evaluate the intrathecal immunoglobulin synthesis patterns from Cuba's and Ecuador's patients with angiostrongyliasis; 8 Ecuadorian patients from two different outbreaks and 28 Cuban patients were studied. Simultaneous blood and cerebrospinal fluid simples were taken. Immunoglobulin (Ig) A, IgM, IgG, and albumin were quantified by radial immunodiffusion. Corresponding Reibergrams were applied. A three-Ig pattern was the most frequent in the two groups, but IgM was presented in all Ecuadorian young mature patients; however, in the Cuban children, only 12 of 28 patients had intrathecal IgM, but about 90% had an IgA and IgG synthesis at time of later puncture. This indicates that, with a larger amount of parasites ingested, clinical symptoms are more severe, and a higher frequency of intrathecal IgM synthesis could be observed. This is discussed as a similarity with the intrathecal IgM synthesis in African trypanosomiasis. PMID:21363978

  11. Digitizing dissent: cyborg politics and fluid networks in contemporary Cuban activism

    Directory of Open Access Journals (Sweden)

    Samuel Kellogg

    2016-06-01

    Full Text Available Communication technologies shape how political activist networks are produced and maintain themselves. In Cuba, despite ideologically and physically oppressive practices by the state, a severe lack of Internet access, and extensive government surveillance, a small network of bloggers and cyberactivists has achieved international visibility and recognition for its critiques of the Cuban government. This qualitative study examines the blogger collective known as Voces Cubanas in Havana, Cuba in 2012, advancing a new approach to the study of transnational activism and the role of technology in the construction of political narrative. Voces Cubanas is analyzed as a network of connections between human and non-human actors that produces and sustains powerful political alliances. Voces Cubanas and its allies work collectively to co-produce contentious political discourses, confronting the dominant ideologies and knowledges produced by the Cuban state. Transnational alliances, the act of translation, and a host of unexpected and improvised technologies play central roles in the production of these narratives, indicating new breed of cyborg sociopolitical action reliant upon fluid and flexible networks and the act of writing. 

  12. Enhanced biodegradation of Pina Cuban crude oil by a culture of mixed marine bacteria

    International Nuclear Information System (INIS)

    Joseph, I.N.; Perigo, E.; Bergueiro, J.R.; Pita, A.; Mayol, M.A.; Navarro, A.

    1998-01-01

    The ability of a mixed marine bacteria culture to degrade Pina Cuban crude oil in the presence of nutrients and sea water was studied. Laboratory experiments were conducted in flasks with 100 ml of saline liquid containing 1 per cent crude. The flasks were inoculated with marine bacteria (IDO-225, IDO-226, and IDO-229) at a final concentration of 10 6 cell/ml. The cultures were grown at 29 degrees C for 21 days. Bacterial growth, and surface and interfacial tension were measured after 5, 13 and 21 days. Results showed that the marine bacteria were effective in accelerating the biodegradation process of Pina Cuban oil. The efficiency of the process increased when nutrients were added to the system. This biopreparation also accelerated emulsification of the oil without any negative effects to the natural microbiota. The biological oxygen demand at five days and at the end of the experiment was determined. The biodegradation constant and the biochemical stabilization constant were also measured. 14 refs., 5 tabs., 4 figs

  13. Response of booster dose of cuban recombinant hepatitis-B vaccine in nonresponder and hyporesponder children

    International Nuclear Information System (INIS)

    Dahifar, H.; Mousavi, F.; Ghorbani, A.

    2007-01-01

    Acute hepatitis B infection can debilitate a patient for weeks and occasionally has a fatal outcome, while chronic infection is a major threat to the individual. To assess response of nonresponder and hyporesponder children to booster dose of Cuban recombinant hepatitis B vaccine. An interventional, descriptive study has been conducted on children who had been immunized with Cuban recombinant Hepatitis B vaccine and their antibody titers were <10mIU/ml (nonresponder) and 10-100mIU/ml (hyporesponder) administered booster dose of the same vaccine in their Deltoid muscles. The response of 141 children with the mean age of 1.9 years to booster dose of vaccine were 94.3% and 100% vaccines with the first and second booster dose of vaccination respectively. The anti-HBs titer in nonresponders and hyporesponders were 468+-346 and 783+-346mIU/ml respectively with significant differences between two groups (P=0.001). This study demonstrate moderately increase antibody production in the majority of vaccines with single supplementary vaccine. (author)

  14. A technique for ecological studies of the cuban fly, 'Lixophaga diatraea' TOWNS., com o uso de tracador radioativo

    International Nuclear Information System (INIS)

    Sgrillo, R.B.; Wiendl, F.M; Walder, J.M.M; Arthur, V.

    1977-01-01

    The specific activity of 32 P required to label Cuban Fly (lixophaga diatraca) is determined. Results show that the radioisotope can be detected inside the bodies of G. mellonella host for at least 6 days, with effective half-life for the raioisotope of 2.8 days [pt

  15. Comparison of Childrearing Practices of Anglos, Cuban-Americans, and Latin Americans. Occasional Papers Series, Dialogues #5.

    Science.gov (United States)

    Escovar, Luis; Escovar, Peggy L.

    In this report perceived childrearing practices among three cultural groups (American Anglos, Cuban Americans, and Latin Americans) were compared. Subjects were 445 college students (168 males and females from universities in Colombia and Venezuela, and 154 from a university in South Florida). A multivariate analysis of covariance was used to…

  16. Case Report: Cutaneous Leishmaniasis in Cuban Immigrants to Texas who Traveled through the Darién Jungle, Panama

    Science.gov (United States)

    Barry, Meagan A.; Koshelev, Misha V.; Sun, Grace S.; Grekin, Sarah J.; Stager, Charles E.; Diwan, A. Hafeez; Wasko, Carina A.; Murray, Kristy O.; Woc-Colburn, Laila

    2014-01-01

    Cutaneous leishmaniasis is rarely seen in the United States. Four Cuban immigrants traveled along the same route at different times from Cuba to Ecuador, then northward, including through the Darién Jungle in Panama. These patients had chronic ulcerative non-healing skin lesions and were given a diagnosis of leishmaniasis. PMID:24865687

  17. Cutaneous leishmaniasis in Cuban immigrants to Texas who traveled through the Darién Jungle, Panama.

    Science.gov (United States)

    Barry, Meagan A; Koshelev, Misha V; Sun, Grace S; Grekin, Sarah J; Stager, Charles E; Diwan, A Hafeez; Wasko, Carina A; Murray, Kristy O; Woc-Colburn, Laila

    2014-08-01

    Cutaneous leishmaniasis is rarely seen in the United States. Four Cuban immigrants traveled along the same route at different times from Cuba to Ecuador, then northward, including through the Darién Jungle in Panama. These patients had chronic ulcerative non-healing skin lesions and were given a diagnosis of leishmaniasis. © The American Society of Tropical Medicine and Hygiene.

  18. Insularity in “el sueño de las formas”: Divination of Cubanness in the poetic of Gaston Baquero

    OpenAIRE

    Águila Ajón, Marta

    2012-01-01

    This study explores the markers of Cuban identity in the poem Brandeburgo 1526 written by Gaston Baquero (La Habana 1914 - Madrid, 1997). The poet is one of the most powerful voices of the Origenes group and of Cuban Literaturel. The exploration I propose does not stem from a previous conceptualization of what constitutes Cubanness, but rather follows Cintio Vitier’s proposal from Lo cubano en la poesía. My study aims for a sensitive intuition of national identity  markers. “Brandeburgo 1526”...

  19. Seismic structure and stratigraphy of northern edge of Bahaman-Cuban collision zone

    Science.gov (United States)

    Ball, M.M.; Martin, R.G.; Bock, W.D.; Sylwester, R.E.; Bowles, R.M.; Taylor, D.; Coward, E.L.; Dodd, J.E.; Gilbert, L.

    1985-01-01

    Common-depth-point (CDP) seismic reflection data in the southwestern Bahamas reveal the northern edge of the tectonized zone that resulted from the late Mesozoic-early Cenozoic collision of Cuba and the Bahamas. Two seismic facies are present. A 10-km broad anticline occurs at the south end of Santaren Channel. Platform carbonates in the core of this structure overlie Early Cretaceous and older basinal carbonate deposits and are onlapped by Late Cretaceous and Cenozoic basinal facies. The structure is inferred to be a hanging-wall anticline at the northern limit of the Cuban fold-thrust belt formed in the Late Cretaceous. A deeper water embayment extended northward into the Straits of Florida, around northern Cay Sal Bank, and back into Santaren Channel during the Early Cretaceous.

  20. Nuclear Magnetic Resonance skull in Cuban families first diagnosed with Friedreich's ataxia

    International Nuclear Information System (INIS)

    Cruz Marinno, Tania; Alvarez Cuesta, Jose Alberto; Aguilera Rodriguez, Raul; Velazquez Perez, Luis

    2011-01-01

    Friedreich's ataxia is characterized by age of onset before 25 years, progressive ataxia, dysarthria, absent deep tendon reflexes and impaired vibration sense. This research was conducted in order to describe the imaging features of central nervous system structures in the early Cuban families diagnosed with the disease. A team of 0.23 Tesla-PANORAMA-Phylips Medical Systems, with a standard head coil, axial slices were obtained using 5mm thick FLAIR sequences, T1 and T2, and sagittal T1 and T2 in three individuals with confirmatory molecular diagnosis of Friedreich's ataxia and six healthy controls matched by age and sex. The morphological structures most affected are the cervical spinal cord, cerebellum and pons, which provides in vivo evidence that the disease leads to atrophy of these structures

  1. Validation of an analysis method to determine raloxifene in a Cuban formulation

    International Nuclear Information System (INIS)

    Rodriguez Chanfrau, Jorge E; Lopez Armas, Marilyn

    2014-01-01

    Raloxifene is a selective estrogen receptor modulator from the benzothiophene family. The results of several large clinical trials have shown that raloxifene reduces the rate of bone loss in the dorsal spine and may increase bone mass at certain sites. High performance liquid chromatography analytical method has been developed for the estimation of raloxifene in Cuban pharmaceutical dosage form. In this method, RP 18 LichrosphermL 100 column with mobile phase consisting of methanol, de-ionized water and trietanolamine (ratio of 70:30:0.1) and 286 nm wavelength ultraviolet detector were used. The mobile phase flow was 1.5 mL/min and the injected volume reached 20 mL

  2. [Nutritional status of Cuban elders in three different geriatric scenarios: community, geriatrics service, nursery home].

    Science.gov (United States)

    González Hernández, Alina; Cuyá Lantigua, Magdalena; González Escudero, Hilda; Sánchez Gutiérrez, Ramón; Cortina Martínez, Rafael; Barreto Penié, Jesús; Santana Porbén, Sergio; Rojas Pérez, Alberto

    2007-09-01

    The undernutrition rates observed in Cuban elders surveyed in three different geriatric scenarios: Community: coastal town of Cojímar (City of Havana); Geriatrics Service ("Hermanos Ameijeiras" Hospital, City of Havana); and Nursery Home (city of Cárdenas, province of Matanzas) by means of the Mini Nutritional Assessment (MNA) of the Elderly are presented. Undernutrition rates were 2.7% among elders surveyed in the coastal community of Cojímar, but increased to become 91.6% among those admitted to the hospital Geriatrics Service, and 95.3% for those institutionalized in the Nursery Home, respectively. The occurrence of undernutrition can be low among elders living freely in the community, but it might affect a vast number of those seeking medical assistance at the public health institutions. Extent of undernutrition among elders in geriatric assistance scenarios should lead to the adoption of the required measures for early identification, and timely treatment, of this health problem.

  3. Multielement determination in Cuban red mangrove samples using nuclear and related analytical techniques

    International Nuclear Information System (INIS)

    Estevez Alvarez, J.R.; Aguiar Lambert, D.; Montero Alvarez, A.; Pupo Gonzalez, I.; Padilla Alvarez, R.; Gonzalez Garcia, H.; Ramirez Sasco, M.

    1998-01-01

    In the present work the contents of Al; K; Ca; Mn; Fe; Ni; Cu; Zn; Sr; Cd and Pb in red mangroves (Rhizophora mangle) from different Cuban regions are determined, using Energy Dispersive X-Ray Fluorescence (Emission-Transmission (Et) and I/C methods), Atomic Absorption Spectrophotometry (AAS), and Polarography (Anodic Stripping Voltametry method). Biological Certified Reference Materials (CRM) are employed for the tracing of the tracing of the curves of the relative I/C method and for the evaluation of the analytical results accuracy. The reliability of the results is also checked by statistical means. Standard deviations and the detection limits of each method are reported. Finally, the obtained values for the concentration of the different elements in each studied ecosystem are presented; a detailed discussion about their significance will be performed in a further paper

  4. Quality of life in a group of Cuban women with breast cancer

    International Nuclear Information System (INIS)

    Izquierdo-Gonzalez, Marlen

    2009-01-01

    Was studied a group of 16 Cuban patients, undergoing surgery and treatment for breast cancer oncospecific with survival greater than anno to assess the impact of the diagnosis, surgery and concomitant treatment on quality of life. The quality of life in the study group is similar to that of reference groups and other breast cancer patients with more than one year of survival, with better physical functioning. The evaluation of the exponents of emotional state, such as nervousness, worry, irritability and depression, showed that the evaluation of the quality of the emotional scale offers significantly lower values of other country groups, but corresponds with that reported for women with breast cancer survival time with the same and equal to the value obtained for cancer patients in treatment and less than a year survival. (Author)

  5. ENVIRONMENTAL EDUCATION IN PLASTIC ELEMENTARY EDUCATION CUBAN. POSITIVE AND GOOD PRACTICE EXPERIENCES

    Directory of Open Access Journals (Sweden)

    Alberto Torres Gutiérrez

    2014-05-01

    Full Text Available Current environmental issues require strengthening the work of environmental education at different educational systems of the XXI century. To this end , it is crucial the work to be performed , from the earliest ages and considering the relationship between the different subjects of the school curriculum . Therefore, the Environmental Education stated general objective in the Cuban Model Elementary School, that is treated with an interdisciplinary character. Based on existing even in achieving these purpose limitations, a study / research leading to the development of scientific result presented is performed. The criteria of experts and the results of the application in practice, confirmed the relevance, importance and effectiveness of the system of activities that promotes Plastic Education Environmental Education school 4. Grade ENU " Hurtado de Mendoza" Township santa Clara, Villa Clara province, Cuba.

  6. Environmental activities in the accounting information system of the Cuban construction sector

    Directory of Open Access Journals (Sweden)

    Happy Salas-Fuente

    2017-06-01

    Full Text Available The construction sector at the international level is considered one of the main sources of environmental pollution due to the direct or indirect negative impacts that it produces. This context implies transformations of information, registration and evaluation, which makes it possible to communicate the activities carried out for the conservation of the environment and their respective effect on the accounting information system. The present article aims to design a procedure for the recognition of environmental activities in the accounting information system of the Cuban construction sector. The main results obtained are framed in the defined criteria for the identification of the environmental aspects in the accounting information and a set of economic-environmental indicators. In the development of the same, methods and techniques of the theoretical and empirical level were used as the historical-logical, analysis and synthesis, inductive and deductive, documentary revision, observation, system approach among others.

  7. For a Critique of Transatlantic Mestiza Territoriality: Challenging the Angolan-Cuban Revolutionary Community

    Directory of Open Access Journals (Sweden)

    Magdalena López

    2017-11-01

    Full Text Available This essay presents the transatlantic confluence of two hegemonic cultural traditions; the ideology of mestizaje and lusotropicalismo in the discourses of the Angolan and Cuban socialist regimes. The shared political utopia during the Angolan Civil War envisioned a South-South community, racially homogeneous. In the last part of the essay I review the works Dulces guerreros cubanos (1999 by Norberto Fuentes, Desconfiemos de los amaneceres apacibles (2011 by Emilio Comas Paret, Geração da Utopía (1992 by Pepetela, and Estação das Chuvas (1996 by José Eduardo Agualusa, in order to demonstrate socio-racial conflicts embedded in the leftist armed struggle. These narratives challenge the homogeneity of official discourses about identity that sustained the transatlantic mestiza territoriality. In doing so, they note a historical continuity of inequality and authoritarianism between colonial and postcolonial, between pre-national and revolutionary nation.

  8. Cuban regulatory politics with relationship to the Radioactive lightning rod employment

    International Nuclear Information System (INIS)

    Lopez Forteza; Yamil; Jerez Vegueria, Pablo F.; Quevedo Garcia, Jose R.; Diaz Guerra, Pedro; Dumenigo Gonzalez, Cruz

    2003-01-01

    The radioactive lightning rod employment for the protection of facilities against atmospheric discharges reached its maximum splendor in the years 80. It was in fact at the end of this decade when the technical considerations arose, with relationship to the justification of this practice that finally took to that the production of such teams was abolished. For the regulatory authorities, however, it continues having validity the question related with the control of those lightning rod that you/they stay in use, as well as the relative one to the establishment of a coherent national politics with the international practice. Presently work the results of the last 10 years of control of the radioactive lightning rod use are presented in Cuba and the radiological evaluation carried out on the base of this experience. Lastly, it exposes the Cuban regulatory politics established with relationship to the employment of this teams in the country

  9. Management system for the control of the Educative Project in the Higher Cuban Education

    Directory of Open Access Journals (Sweden)

    Lionel Rodolfo Baquero Hernández

    2016-06-01

    Full Text Available As part of the training of Cuban university students involved educational project that requires proper control of compliance. At the University of Information Science, is done through a digital model developed by the professor of the group which generates poor control and directly undermines the quality of the process. In this work the solution to the problem as basis of computerization, using OpenUP development methodology, programming language Java Script on the NetBeans platform version 8.0 as Integrated Development Environment, with ExtJS 3.4 framework is detailed, with version 8.0 of the Software Engineering tools Computer Assisted Visual Paradigm for modeling and PostgreSQL 9.3 as a management system database. The system also generates the associated compliance status of the activities that make up the educational project of a group, which facilitates the control and decision making reports.

  10. Feasibility evaluation of two solar cooling systems applied to a cuban hotel. Comparative analysis

    International Nuclear Information System (INIS)

    Díaz Torres, Yamile; Valdivia Nodal, Yarelis; Monteagudo Yanes, José Pedro; Miranda Torres, Yudit

    2016-01-01

    The article presents an analysis of technical and economic feasibility of using two configurations of solar cooling in a Cuban hotel. HVAC hybrid schemes are: a cooler of ice water vapor compression (chiller) interconnected in parallel with a smaller capacity chiller, first with a solar-powered absorption cooling system (SACS), and then with a photovoltaic cooling system(PSC). Both were simulated taking into account the weather conditions in the region, thermodynamic calculation methodologies and principles that govern these technologies. The results show that the use of these alternatives contributes to reducing energy consumption and the environmental impact of heating, ventilation and air conditioning systems (HVAC). Economic analysis highlights that PCS is more favorable than the SACS taking into account the cooling cost generation (CCG) but energy assessment indicates that SACS has higher thermal performance for the case study to which it is applied. (author)

  11. Industrial property for science’s management, technology and innovation in Cuban State companies

    Directory of Open Access Journals (Sweden)

    Dulce María Contreras Villavicencio

    2017-08-01

    Full Text Available The paper synthesizes some research on industrial property aspects from the socio-legal perspective and financial accounting. Its focus to the socialist state enterprise adaptation in his economic fact, social and environmental responsibility as a fundamental Cuban model reach, competitiveness and high performance in socialist state enterprise. It outlines criteria on the ordering and implementation of industrial property through the management of science and technology, protection and dissemination of knowledge results as alternatives of regulation in chain of value to full cycle of innovation, dynamics of intangible heritage and relationships, exchange with marketing as business philosophy of business application. Strategies are proposed regarding the rights of this institution in the economic-organization management state.

  12. Improving the family orientation process in Cuban Special Schools trough Nearest Prototype classification

    Directory of Open Access Journals (Sweden)

    Caballero-Mota, Y.

    2013-03-01

    Full Text Available Cuban Schools for children with Affective – Behavioral Maladies (SABM have as goal to accomplish a major change in children behavior, to insert them effectively into society. One of the key elements in this objective is to give an adequate orientation to the children’s families; due to the family is one of the most important educational contexts in which the children will develop their personality. The family orientation process in SABM involves clustering and classification of mixed type data with non-symmetric similarity functions. To improve this process, this paper includes some novel characteristics in clustering and prototype selection. The proposed approach uses a hierarchical clustering based on compact sets, making it suitable for dealing with non-symmetric similarity functions, as well as with mixed and incomplete data. The proposal obtains very good results on the SABM data, and over repository databases.

  13. Expanding the classroom with educational technology: A case study of a Cuban polytechnic high school

    Directory of Open Access Journals (Sweden)

    Anne Leftwich

    2014-12-01

    Full Text Available Polytechnic instruction has a common place in the Cuban education system (Gasperini, 2000. In polytechnic institutions, teachers leverage technological tools to prepare students for labor market competences. This case study examined a polytechnic institution in Cuba to consider how teachers defined educational technology. Based on teacher questionnaire responses, site-based teacher interviews, and field observations, technology was primarily viewed as a method for student preparation. In other words, teachers used technology to prepare students for their future careers and the technology they will need to be successful in that career. The study found that teachers highly valued their technical pedagogical training, believed that the growing spaces were an integral part of their technology based instruction, and claimed that the limited resources was their greatest barrier to integrating ICT in the classroom.

  14. Prevalence and Genotype Distribution of Pneumocystis jirovecii in Cuban Infants and Toddlers with Whooping Cough

    Science.gov (United States)

    Monroy-Vaca, Ernesto X.; de Armas, Yaxsier; Illnait-Zaragozí, María T.; Toraño, Gilda; Diaz, Raúl; Vega, Dania; Alvarez-Lam, Ileana; Calderón, Enrique J.

    2014-01-01

    This study describes the prevalence and genotype distribution of Pneumocystis jirovecii obtained from nasopharyngeal (NP) swabs from immunocompetent Cuban infants and toddlers with whooping cough (WC). A total of 163 NP swabs from 163 young Cuban children with WC who were admitted to the respiratory care units at two pediatric centers were studied. The prevalence of the organism was determined by a quantitative PCR (qPCR) assay targeting the P. jirovecii mitochondrial large subunit (mtLSU) rRNA gene. Genotypes were identified by direct sequencing of mtLSU ribosomal DNA (rDNA) and restriction fragment length polymorphism (RFLP) analysis of the dihydropteroate synthase (DHPS) gene amplicons. qPCR detected P. jirovecii DNA in 48/163 (29.4%) samples. mtLSU rDNA sequence analysis revealed the presence of three different genotypes in the population. Genotype 2 was most common (48%), followed in prevalence by genotypes 1 (23%) and 3 (19%); mixed-genotype infections were seen in 10% of the cases. RFLP analysis of DHPS PCR products revealed four genotypes, 18% of which were associated with resistance to sulfa drugs. Only contact with coughers (prevalence ratio [PR], 3.51 [95% confidence interval {CI}, 1.79 to 6.87]; P = 0.000) and exposure to tobacco smoke (PR, 1.82 [95% CI, 1.14 to 2.92]; P = 0.009) were statistically associated with being colonized by P. jirovecii. The prevalence of P. jirovecii in infants and toddlers with WC and the genotyping results provide evidence that this population represents a potential reservoir and transmission source of P. jirovecii. PMID:24131683

  15. Cuban Ocular Toxoplasmosis Epidemiology Study (COTES): incidence and prevalence of ocular toxoplasmosis in Central Cuba.

    Science.gov (United States)

    Bustillo, Jorge L; Diaz, Jose D; Pacheco, Idarmes C; Gritz, David C

    2015-03-01

    Serological studies indicate that rates of ocular toxoplasmosis (OT) vary geographically, with higher rates in tropical regions. Little is known about population-based rates of active OT. We aimed to describe the epidemiology of OT in Central Cuba. This large-population, cross-sectional cohort study used a prospective database at a large regional referral centre in Central Cuba. The patient database was searched for all patients who presented with OT during the 12-month study period from 1 April 2011 to 31 March 2012. Inclusion criteria were the clinical diagnosis of OT, characterised by focal retinochoroidal inflammation and a response to therapy as expected. Gender-stratified and age-stratified study population data from the 2012 Cuban Census were used to calculate incidence rates and prevalence ratios. Among 279 identified patients with OT, 158 presented with active OT. Of these, 122 new-onset and 36 prior-onset cases were confirmed. Based on the total population in the Sancti Spiritus province (466,106 persons), the overall incidence of active OT was 26.2 per 100,000 person-years (95% CI 21.7 to 31.3) with an annual prevalence ratio of 33.9 per 100,000 persons (95% CI 28.8 to 39.6). The incidence of active OT was lowest in the oldest age group and highest in patients aged 25-44 years (4.5 and 42.1 per 100,000 person-years, respectively). This first report describing population-based rates of OT in the Cuban population highlights the importance of patient age as a likely risk factor for OT. Disease rates were found to be highest in females and young to middle-aged adults. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  16. Effects of Cuban Crude Oil on the Process of Leach, Sedimentation and Distillation in Nicaro

    Directory of Open Access Journals (Sweden)

    Ing. María Elena Magaña-Haynes

    2015-11-01

    Full Text Available ine"> Cuban crude in the process of leaching, sedimentation and distillation ofthe processed minerals at “René Ramos Latour” Company was evaluated. Two periods of testswere performed; one when oil was introduced into the furnace by spear and the other when itwas introduced by spear and chamber. The results demonstrated the feasibility of using theCuban crude in reduction and leaching process of mineral by the use of spear and chamber aswell. Nickel and cobalt extractions achieved by stepwise exceed values found in the relatedliterature. Deposition of mineral was good reaching values of 1,736 -1,745 kg/m3 at the bottomof the sedimentation stage leach and 1,774 -1,807 kg/m3 in the washing stage. The thickenerswere maintained with high clear liquor level throughout the test with values between 28,0-30,0ppm. The sedimentation rate achieved low values both in the first and in the second leachingstage. Sedimentation unit area was 0,23 m2 /T day, so that no sedimentation problems werepresented. It was observed an increase in the sulfur content up to values of 6,52 g/L for a nickelcontent of 12,0g/L, which caused that the dissolved nickel in downloading stills were of 0,392 g/L and 2,58 g/L of ammonia. The sulfur content in the nickel carbonate was increased upto 6,30 %, which is 2,5 % higher than conventional.

  17. Requirements for a text that integrates the oncological pharmacy into the Cuban national health care system

    International Nuclear Information System (INIS)

    Arbesú Michelena, Ma Antonieta; Sedeño Argilagos, C. Caridad; Fernández Argüelles, Rogelio Alberto

    2015-01-01

    Introduction: oncological patients are cared for at all health care system levels. The pharmaceutical professional requires unifying instructions for his/her work in order to be part of the health team. Currently, there is no domestic literature for the pharmaceutical services, mainly that one devoted to oncological area, which comprises in just one text all the functional requirements and directs his/her professional daily work. Objective: to verify the requirement for national integral literature for the development of the oncological pharmaceutical service work. Methods: one two-question questionnaire was designed to assess the knowledge of experts and another with eight questions to learn about the requirement for literature on oncological pharmaceutical service adapted to the conditions of the Cuban health system. The questionnaires were e-mailed to 15 pharmacists who had an outstanding experience in several activities of the oncological pharmacy. Results: ten university experts, with 14.5 years of work experience as average in assistance activities from three provinces, responded. Two were excluded because their low level of information on oncological activity; poor incorporation of the pharmacist involved in services to activities inherent to his/her formation. All the experts believed that it was necessary to have a comprehensive text on the tasks, functions and activities linked to the oncological patient care, and to use the formal learning pathways for updating. A positive association with the favorable answers (1.40) was noticed. Conclusions: there exists a need for a text as a guide of the oncological pharmaceutical services according to the demands of the Cuban health care system. (author) 1

  18. Helicobacter pylori cagA and vacA genotypes in Cuban and Venezuelan populations

    Directory of Open Access Journals (Sweden)

    Diana Ortiz-Princz

    2010-05-01

    Full Text Available The aim of this study was to determine the presence of Helicobacter pylori cytotoxin-associated gene (cagA/vacuolating cytotoxin gene (vacA among patients with chronic gastritis in Cuba and Venezuela. Gastric antrum biopsies were taken for culture, DNA extraction and PCR analysis. Amplification of vacA and cagA segments was performed using two regions of cagA: 349 bp were amplified with the F1/B1 primers and the remaining 335 bp were amplified with the B7629/B7628 primers. The VA1-F/VA1-R set of primers was used to amplify the 259-bp (s1 or 286-bp (s2 product and the VAG-R/VAG-F set of primers was used to amplify the 567-bp (m1 or 642-bp (m2 regions of vacA. cagA was detected in 87% of the antral samples from Cuban patients and 80.3% of those from Venezuelan patients. All possible combinations of vacA regions were found, with the exception of s2/m1. The predominant combination found in both countries was s1/m1. The percentage of cagA+ strains was increased by the use of a second set of primers and a greater number of strains was amplified with the B7629/B7628 primers in the Cuban patients (p = 0.0001. There was no significant difference between the presence of the allelic variants of vacA and cagA in both populations. The predominant genotype was cagA+/s1m1 in both countries. The results support the necessary investigation of isolates circulating among the human population in each region.

  19. Walk Score®: associations with purposive walking in recent Cuban immigrants.

    Science.gov (United States)

    Brown, Scott C; Pantin, Hilda; Lombard, Joanna; Toro, Matthew; Huang, Shi; Plater-Zyberk, Elizabeth; Perrino, Tatiana; Perez-Gomez, Gianna; Barrera-Allen, Lloyd; Szapocznik, José

    2013-08-01

    Walk Score® is a nationally and publicly available metric of neighborhood walkability based on proximity to amenities (e.g., retail, food, schools). However, few studies have examined the relationship of Walk Score to walking behavior. To examine the relationship of Walk Score to walking behavior in a sample of recent Cuban immigrants, who overwhelmingly report little choice in their selection of neighborhood built environments when they arrive in the U.S. Participants were 391 recent healthy Cuban immigrants (mean age=37.1 years) recruited within 90 days of arrival in the U.S., and assessed within 4 months of arrival (mean=41.0 days in the U.S.), who resided throughout Miami-Dade County FL. Data on participants' addresses, walking, and sociodemographics were collected prospectively from 2008 to 2010. Analyses conducted in 2011 examined the relationship of Walk Score for each participant's residential address in the U.S. to purposive walking, controlling for age, gender, education, BMI, days in the U.S., and habitual physical activity level in Cuba. For each 10-point increase in Walk Score, adjusting for covariates, there was a significant 19% increase in the likelihood of purposive walking, a 26% increase in the likelihood of meeting physical activity recommendations by walking, and 27% more minutes walked in the previous week. Results suggest that Walk Score is associated with walking in a sample of recent immigrants who initially had little choice in where they lived in the U.S. These results support existing guidelines indicating that mixed land use (such as parks and restaurants near homes) should be included when designing walkable communities. Copyright © 2013 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

  20. Impact of periodic selective mebendazole treatment on soil-transmitted helminth infections in Cuban schoolchildren.

    Science.gov (United States)

    van der Werff, Suzanne D; Vereecken, Kim; van der Laan, Kim; Campos Ponce, Maiza; Junco Díaz, Raquel; Núñez, Fidel A; Rojas Rivero, Lázara; Bonet Gorbea, Mariano; Polman, Katja

    2014-06-01

    To evaluate the impact of periodic selective treatment with 500 mg mebendazole on soil-transmitted helminth (STH) infections in Cuban schoolchildren. We followed up a cohort of 268 STH-positive schoolchildren, aged 5-14 years at baseline, at six-month intervals for two years and a final follow-up after three years. Kato-Katz stool examination was used to detect infections with Ascaris lumbricoides, Trichuris trichiura and hookworm. Common risk factors related to STHs were assessed by parental questionnaire. A significant reduction in the number of STH infections was obtained after three years with the highest reduction for T. trichiura (87.8%) and the lowest for hookworm (57.9%). After six months, cure rates (CRs) were 76.9% for A. lumbricoides, 67.4% for T. trichiura and 44.4% for hookworm. After two treatment rounds, more than 75% of all STH-positive children at baseline were cured, but with important differences between STH species (95.2% for A. lumbricoides, 80.5% for T. trichiura and 76.5% for hookworm). At the end of the study, these cumulative CRs were almost 100% for all three STHs. Risk factors for STHs were sex, sanitary disposal and habit of playing in the soil. Our results indicate that periodic selective treatment with 500 mg mebendazole is effective in reducing the number of STH infections in Cuban schoolchildren. Although important differences were found between helminth species, two rounds of treatment appeared sufficient to obtain substantial reductions. © 2014 John Wiley & Sons Ltd.

  1. "Maricón," "pájaro," and "loca": Cuban and Puerto Rican linguistic practices, and sexual minority participation, in U.S. Santería.

    Science.gov (United States)

    Vidal-Ortiz, Salvador

    2011-01-01

    Lesbian, gay, bisexual, and transgender (LGBT) people in Cuba, Puerto Rico, and the United States are, to varying degrees, practitioners of the Afro-Cuban religion popularly known as Santería. Cuban and Puerto Rican forms of referencing LGBT populations are illustrated in this article, which is drawing from interviews and participant observation conducted in the United States, with close to 30 practitioners, many of whom were Cuban, Cuban American, and Puerto Rican. I discuss the ways in which Santería gatherings produce an alternative use of otherwise stigmatized language for "gay" practitioners. Through the use of distinctive language to reference all of these populations, we may rethink the relationship between identities and practices, and within that, gender presentations vis a vis identities.

  2. The revolutionary founding moments of a contra-Grierson tradition [review of: Post-revolution nonfiction film: building the Soviet and Cuban Nations by Joshua Malitsky, 2013

    OpenAIRE

    Winston, Brian

    2013-01-01

    “The revolutionary founding moments of a contra-Grierson tradition” Joshua Malitsky, Post-revolution nonfiction film: building the Soviet and Cuban Nations (Bloomington: Indiana University Press, 2013).

  3. Double ambidexterity

    DEFF Research Database (Denmark)

    Kaulio, Matti; Thorén, Kent; Rohrbeck, René

    2017-01-01

    We leverage the business model innovation and ambidexterity literature to investigate a contradictory case, the Swedish-Finnish Telecom operator TeliaSonera. Despite being challenged by three major disruptions, the company not only still exists but also enjoys remarkably good financial performance...... this behaviour as double ambidexterity. We use an in-depth case study to conceptualize double ambidexterity and discuss its impact on the business's survival and enduring success........ Building on extant archival data and interviews, we carefully identify and map 26 organizational responses during 1992–2016. We find that the firm has overcome three critical phases by experimenting and pioneering with portfolios of business models and/or technological innovations. We describe...

  4. Double Chooz

    Energy Technology Data Exchange (ETDEWEB)

    Buck, Christian [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)

    2006-05-15

    The goal of the Double Chooz reactor neutrino experiment is to search for the neutrino mixing parameter {theta}{sub 13}. Double Chooz will use two identical detectors at 150 m and 1.05 km distance from the reactor cores. The near detector is used to monitor the reactor {nu}-bar {sub e} flux while the second is dedicated to the search for a deviation from the expected (1/distance){sup 2} behavior. This two detector concept will allow a relative normalization systematic error of ca. 0.6 %. The expected sensitivity for sin{sup 2}2{theta}{sub 13} is then in the range 0.02 - 0.03 after three years of data taking. The antineutrinos will be detected in a liquid scintillator through the capture on protons followed by a gamma cascade, produced by the neutron capture on Gd.

  5. Analysis of the potentiality for implementing of the cleaner production and adopting a sustainable consumption in the Cuban entrepreneurial system

    International Nuclear Information System (INIS)

    Tortosa Ferrer, Barbara Ivette; Orue Valdes, Sonia; Mena Ulecia, Karel

    2007-01-01

    The world economic development has conduced to increase the worsening of the environment as result of the natural resources pollution. The tendency has been toward the unsustainable exploitation of natural resources, to increasing of the goods and services production, as well as, to elevated consumption. In this sense, many countries have planed environmental policies addressed to reducing of pollution introducing cleaner production practices and promoting the adoption of responsible consumption. This article shows the existing potentiality in a selected Cuban companies group for introducing and applying of the cleaner production, as well as, the adoption of a sustainable consumption start from analysis of the obtained results in short-term assessments (quick scans) carried out by the Cuban Environment Agency Focal Point of the National Cleaner Production Network in the period between 2004 and 2007

  6. Some historical tendencies of the methodological work direction in the education municipal level at the cuban context

    Directory of Open Access Journals (Sweden)

    Orlando Ramos-Álvarez

    2017-11-01

    Full Text Available This work leaves from the theoretical and empiric systematizing that shows the necessity to investigate how it has evolved and what factors they have conditioned the behavior of the methodological work direction in the education municipal level. The basic budgets of the educational are approached that serve of referents for the analysis of the relationships of the organizational functional levels of the methodological work. The study is carried out in the period 1959-2017, starting in 1959 as an important milestone in the conception of the Cuban educational system. When the Revolution triumphed there were two conceptions of Education, in Cuban educational practice, on the one hand the abandoned national education system, essentially pragmatic, totally incongruous and on the other the aspirations of the Revolutionary Government, which had been forged in the revolutionary struggle between 1953 and 1959.

  7. Immune Response Induction and New Effector Mechanisms Possibly Involved in Protection Conferred by the Cuban Anti-Meningococcal BC Vaccine

    Science.gov (United States)

    Pérez, Oliver; Lastre, Miriam; Lapinet, José; Bracho, Gustavo; Díaz, Miriam; Zayas, Caridad; Taboada, Carlos; Sierra, Gustavo

    2001-01-01

    This report explores the participation of some afferent mechanisms in the immune response induced by the Cuban anti-meningococcal vaccine VA-MENGOC-BC. The induction of delayed-type hypersensitivity in nursing babies and lymphocyte proliferation after immunization is demonstrated. The presence of gamma interferon IFN-γ and interleukin-2 (IL-2) mRNAs but absence of IL-4, IL-5, and IL-10 mRNAs were observed in peripheral blood mononuclear cells from immunized subjects after in vitro challenge with outer membrane vesicles. In addition, some effector functions were also explored. The presence of opsonic activity was demonstrated in sera from vaccinees. The role of neutrophils as essential effector cells was shown. In conclusion, we have shown that, at least in the Cuban adult population, VA-MENGOC-BC induces mechanisms with a T-helper 1 pattern in the afferent and effector branches of the immune response. PMID:11401992

  8. Litter assessment on 99 Cuban beaches: A baseline to identify sources of pollution and impacts for tourism and recreation.

    Science.gov (United States)

    Botero, C M; Anfuso, G; Milanes, C; Cabrera, A; Casas, G; Pranzini, E; Williams, A T

    2017-05-15

    Litter presence was assessed on the entire Cuban coastline, and includes 99 beaches from all Cuban regions, during field work carried out in 2012 and 2015. A standard method verified in several countries was applied, which classified beaches for nine types of litter into four grades (A-excellent to D-poor). Almost half of the Cuban beaches obtained excellent cleanliness scores, although many needed to be better managed. In this baseline, the most common types of residue were general litter (8% grade D and 35% grades B/C) and potentially harmful litter (<68% with grade A). Resort beaches and those with international visitors showed the best litter management. Tourism Impacts seems to be related to visitor origin therefore choices to develop sustainable tourism in rural and village beaches (64%) appears low, if beach cleaning gross investment is focused on resort beaches (24%). Finally, this paper highlights geographical distribution and types of litter patterns. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. La población de Cuba hoy. Cuban population today

    Directory of Open Access Journals (Sweden)

    Grisell Rodríguez Gómez

    2015-12-01

    Full Text Available El cambio de la población cubana no debe continuar siendo percibido como un problema o un reto, sino que debe abordarse en un marco de interacción con el desarrollo económico y social. Por lo tanto, nada de lo que suceda en términos de política de hoy es compatible con una visión fragmentada en lo que se refiere a los aspectos demográficos. Es factible que se diseñen o implementen acciones en este sentido, pero ellas deben ser manejadas desde la perspectiva de su impacto sistémico en la dinámica de la población. Este documento se centra en el análisis del comportamiento de la población cubana a través de la explicación de la evolución de sus determinantes: la mortalidad, la fecundidad y la migración, en un escenario de disminución real del número de habitantes en una sociedad que se encuentra inmersa en un importante conjunto de cambios, ajustes y desafíos, poniendo el tema en un plano de análisis que excede el estudio exclusivo de los rasgos demográficos desde solo sus indicadores a nivel macro para reclamar la necesidad de abordar la incidencia específica de lo cultural y lo social, así como su atención desde la política. The Cuban population change should not be perceived as a problem or a challenge but it should be addressed in a framework of interaction with economic and social development. Therefore, nothing that happens in terms of policy today supports a fragmented view as far as demography is concerned. It does not mean that no action could be drawn or carried out in that sense, but certainly, it is vital that any action must be handled from the perspective of its systemic impact on population dynamics. This paper focuses on the analysis of the behavior of the Cuban population through the explanation of the evolution of its determinants: mortality, fertility and migration, in a scenario of real decline in the number of people in a society that is immersed in an important set of changes, adjustments and

  10. The solar energy photovoltaic one option to the Cuban rural electrification

    Energy Technology Data Exchange (ETDEWEB)

    Alabart, J. A. [Centro de Investigaciones de Energia Solar (CIES), (Cuba); Friedman, D. [ECOSOL (COPEXTELL S. A.), (Cuba); Ramos, R.; Moreira, J.; Batista, I.; Garcia, R.; Rodriguez, M. [Centro de Investigaciones de Energia Solar (CIES), (Cuba)

    1995-12-31

    This paper analyzes the work done in Cuba over the last years in the field of photovoltaic, from its R and D and Industrial capacities to the Rural Electrification Program. Based on this work a Development Program for the PV industry is proposed, which is defected towards the integration of all necessary factors that will ensure a sustainable Rural Electrification Program. This program is divided in 5 main stages: 1. Import of solar cells and other elements for the assembly in Cuba of modules and diverse system components (1995-2005). 2. Production of solar cells from imported wafers (1997-2005). 3. Production of monocrystalline silicon wafers from imported plycrystalline silicon (1998-2005). 4. Production of polycrystalline silicon from Cuban silica sand (2000-2005). 5. Development and introduction of new technologies for the production of solar cells (2000-2005). The combination of the PV Development program and the Rural Electrification program will guarantee the supply of electricity to 100% of the Cuban population, and at same time accelerate the technological, industrial and research infrastructure on which a large scale national PV industry would be supported. The implementation of such a program would also make cost on the National Electrical Grid (NEG), avoiding the need for new generation facilities based on fossil fuels. [Espanol] Este articulo analiza el trabajo hecho en Cuba durante los ultimos anos en el campo de los fotovoltaicos, desde su Investigacion y Desarrollo y capacidades Industriales, hasta el Programa de Electrificacion Rural. Basado en este trabajo se propone un Programa de Desarrollo para la industria de PV que esta dirigido hacia la integracion de todos los factores necesarios que aseguraran un Programa de Electrificacion sostenido. Este programa esta dividido en 5 principales etapas: 1. Importacion de celdas solares y otros elementos para el ensamblado en Cuba de modulos y diversos componentes del sistema (1995-2005); 2. Produccion de

  11. Prevalence of incidental findings on magnetic resonance imaging: Cuban project to map the human brain

    International Nuclear Information System (INIS)

    Hernandez Gonzalez, Gertrudis de los Angeles; Alvarez Sanchez, Marilet; Jordan Gonzalez, Jose

    2010-01-01

    To determine the prevalence of incidental findings in healthy subjects of the Cuban Human Brain Mapping Project sample, it was performed a retrospective descriptive study of the magnetic resonance imaging (MRI) obtained from 394 healthy subjects that make up the sample of the project, between 2006-2007, with an age range of 18 to 68 years (mean 33,12), of which 269 (68,27 %) are male and 125 (31,73 %) are women. It was shown that 40,36 % had one or more anomaly in the magnetic resonance imaging (MRI). In total, the number of incidental findings was 188, 23,6 % of which were brain findings and 24,11 % were non-brain findings, among the latter, were the sinusopathy with 20,81 % and maxillary polyps with 3,30 %. The most prevalent brain findings were: intrasellar arachnoidocele, 11,93 %, followed by the prominence of the pituitary gland, 5,84 %, ventricular asymmetry, 1,77 % and bone defects, 1,02 %. Other brain abnormalities found with very low prevalence had no pathological significance, except for two cases with brain tumor, which were immediately sent to a specialist. Incidental findings in MRI are common in the general population (40,36 %), being the sinusopathy, and intrasellar arachnoidocele the most common findings. Asymptomatic individuals who have any type of structural abnormality provide invaluable information on the prevalence of these abnormalities in a presumably healthy population, which may be used as references for epidemiological studies

  12. Levels of lead-210 (210Pb) and polonium 210 (210Po) in Cuban Tobacco products

    International Nuclear Information System (INIS)

    Brigido, F.O.; Barrerras Caballero, A.; Alvarez Rodriguez, D.; Montalvan Estrada, A.

    1999-01-01

    The release of 210Po in tobacco smoke and the radiation dose for man have been studied because of the high incidence of lung cancer among smoker. The electroplating of polonium at two different times onto copper disks and further measurement of alpha activity was the meted used for 210 Po determination in tobacco products. The Polonium daughter is used to determine both the 210Pb and 210Po using the Baseman equations for radioactive growth and decay. A cigarette contains between 10.6 and 14.7 mBq of 210Pb with an average activity of 13.0 mBq and between 8.5 and 12.3 mBq of 210Po with an average activity of 10.4 mBq for different Cuban cigarette brands. For a person smoking a pack of 20 cigarettes a day, the values of intakes estimated range from 32 to 44 mBq for 210Pb and from 34 to 49 mBq for 210 Po with an average daily intake of 39 mBq for 210 Pb and 42 mBq for 210Po. The annual effective dose estimated due to inhalation of these nuclides contained in cigarette smoke shows a value of 66[Sv and was in correspondence with world-wide range dose, 46 - 90 mSv.year 1 - for tobacco product consumption

  13. The Flowering and Bee-like Insurance, Economic Standards for the Cuban Apian’s Productions.

    Directory of Open Access Journals (Sweden)

    Remigio Eusebio Pérez Morejón

    2012-01-01

    Full Text Available This work grasped Cuban archipelago with the purpose of promoting the financial protection in agricultural sector, giving options of security to the country Apian’s producers against incontrollable natural risks. A study of the hurricanes in Cuba was carried out, so as evaluation of danger, vulnerability and sensitivity of the Apian’s echo-systems (AE; the analysis of occurrence frequency (OF demonstrate that in Cuba doesn’t exist low dangerous zones for the hurricanes impact. Recovery of heavy losses has delayed very variable time intervals which oscillate between 3 to 34 months. Considerable damages could be confirmed in arboreous covering of the (AE. As final results were presented the apian insurance as an economical necessity standard to transfer risks before whips of climatic changes, expressed in the increase of number and intensity of the hurricanes and long drought. It is proved that the losses in this lapse of time are assumed by the insurance enterprise in a 70 %, which economically justify the fact of protecting the apian productions to guarantees of itself and it was demonstrated that it is necessary and feasible the application of the proposal of apian insure. To the development of this work were used analysis methods statistical and survey.

  14. The Cuban experience in public health: does political will have a role?

    Science.gov (United States)

    Pagliccia, Nino; Alvarez Pérez, Adolfo

    2012-01-01

    The role of political will in public health has been largely ignored. In Cuba, however, for the past 50 years, political will has been the ultimate, encompassing intersectoral action in public health. The excellent achievements in population health in Cuba during these 50 years have been widely recognized. Researchers have sought to explain this "Cuban paradox" by focusing on a large array of public health factors, including health promotion, primary care activities, and intersectoral action on health determinants. These factors constitute necessary but not sufficient conditions to achieve good health outcomes. This article defines political will and uses the experience of Cuba to illustrate the potential role of political will in public health. The authors suggest a framework for the evaluation of political will aimed at achieving good health, examining the "Five R's of political will," five observable features that may provide systematic information on the direction and realization of political will: (1) renewal of commitment, (2) reform of the system, (3) resource development, (4) review of performance, and (5) responsible management. These five features focus the spotlight on the consistency between health goals and public discourse and action.

  15. Neutron activation analysis methodology of marine sediments of the Cuban shelf

    International Nuclear Information System (INIS)

    Garcia, G.

    1988-01-01

    It is described the methodology followed for the neutron activation analysis of marine sediments of the Cuban shelf. A total of 35 elements were determined by means of the employment of thermal and epithermal fluxes of a nuclear reactor as well as from the flux of a generator of 14 MeV neutrons. It is signaled the particularities of detection and measurement of some elements and their interferences, with and special mention of the correction over 153 Sm, 113m In(Sn), 65 Zn, 160 Th, 169 Yb, 75 Sc and 177 Lu. It is concluded that 82% of elements may be determined with epithermal neutrons and 41%, with thermal neutrons. Only Si is determined with 14 MeV neutrons. Moreover, it is recommended the optimal periods of decaying (''cooling'') by groups of elements. The determined elements were: Ag, As, Au, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Mo, Na, Nd, Ni, Rb, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Tb, Th, U, W, Yb, Zn and Zr. The accuracy varied between 1% and 5% to 19 elements, between 6% and 10% to 5 elements, between 11% and 30% to 6 elements and it was greater than 30% to 5 elements

  16. Preparation and response in case of natural disasters: Cuban programs and experience.

    Science.gov (United States)

    Mas Bermejo, Pedro

    2006-01-01

    Inadequate preparation for national disasters is frequently particularly devastating in lower income countries. The Cuba's location has a diversity of potential natural disasters, including hurricanes, non-tropical depressions, tropical storms, tropical cyclones, and severe local storms, all with intense rains and winds, earthquakes and droughts. Cuban preparation, at all levels, is geared to these predominant threats. Planning for natural disasters is integral to the political and economic life of Cuba, nationally and locally. On several occasions, United Nations (UN) officials have pointed to Cuba as a model for developing countries preparing for hurricanes and other natural disasters. A global policy for managing the risks of natural disasters could improve continuity of assistance for development and reduce the necessity of humanitarian aid. Planning in advance of disasters is a feasible way of helping people, by reducing expenses of emergencies, recuperation, and reconstruction. As climate changes accelerate, many researchers fear a period of irreversible and uncontrollable change. While the atmosphere continues to warm, it generates more intense rains, more frequent heat waves, and more ferocious storms. Thus, achieving better protection of developing countries from an increasing onslaught of natural disasters will only grow in importance. Even though Cuba's contribution to know-how has been recognized by United Nations' officials, progress toward more adequate preparation worldwide has been slow. To support other countries beyond conveying the lessons, Cuba now offers specially trained personnel to cooperate immediately with any country suffering a natural disaster.

  17. Quantitative analysis of phases by x-ray diffraction and thermogravimetry in Cuban phosphorite ores

    International Nuclear Information System (INIS)

    Casanova Gomez, Abdel; Martinez Montalvo, Asor; Cilano Campos, Guillermo; Arostegui Aguirre, Miladys; Ferreiro Fernandez, Adalyz; Alonso Perez, Jose A.

    2016-01-01

    Phases analysis is performed by instrumental techniques X - ray diffraction and Thermal Analysis in two groups of samples of Cuban minerals carriers'phosphorus, candidates to reference materials. To this end, the variant of structural refinement of the diffraction pattern in the form of adjustment profile is applied, using the Full prof program of Juan Rodriguez-Carvajal. This analysis is the first step to develop the standard specification of these resources and classify them as phosphate rock and / or phospharite from their mass content. The statistical evaluation of the uncertainty of the quantitative analysis (standard deviation) was carried out in ten replicate samples of phosphate rock and eight of phosphate from the field Trinidad de Guedes. The qualitative phase analysis reflected the following phase composition: carbonate fluoroapatite (CFA), Calcite, Quartz and Halloysite (present only in the clayey granular phosphorite ore; FGA). By the method of setting pattern powder diffraction profile, the quantitative phase composition is reported in the sample FGA: 87 (2) % of CFA, 4 (1) % of Calcite, 1% Quartz, and 8 (3) % Halloysite. For granular limestone ore (FGC), the following contents were obtained: 87 (3) % Calcite, 8 (3) % of CFA and 5 (1) % Quartz: The obtained values are corroborated by Thermogravimetric Analysis (TG) through the calculation of the mass content of the thermally active phases (Calcite and CFA) in the range (27-10000 0 C), confirming the validity of the results of XRD. (Author)

  18. Burnout syndrome in nurses of Cuban cancer hospitals. Effectiveness of an intervention program. 2004-2009

    International Nuclear Information System (INIS)

    Chacón Roger, Margarita

    2009-01-01

    Studies on Professional Burnout Syndrome (SDP) Nursing identify factors that interact in its development. The objective of this research was to identify the magnitude of the SDP in the nursing staff of Cuban cancer hospitals, identify professional and personal factors involved in the wear process and validate the effectiveness of an intervention program. Three studies using descriptive, analytical and experimental designs were performed. The main results showed that this syndrome is present in 44.0% of subjects; factors were more associated risk: work overload, rotating shift, the 'task characteristics' and 'organization' as well as the excessive time interaction with patients. These factors interacted with academic training, 'extra work' for family care, personal characteristics and overload: high levels of state anxiety, avoidance and escape confrontations and orientations of the least Salutogenic personality. The consequences for the health were associated muscle pain, headaches and colds. The intervention focused on increasing knowledge on job stress and control, their effectiveness was demonstrated by decreased levels of the SDP and its consequences. (author)

  19. Abundance, distribution and size structure of Diadema antillarum (Echinodermata: Diadematidae) in South Eastern Cuban coral reefs.

    Science.gov (United States)

    Martín Blanco, F; González Sansón, G; Pina Amargós, F; Clero Alonso, L

    2010-06-01

    The 1983-1984 mass mortality event of Diadema antillarum affected more than 93% of the total Caribbean population. Although there are no records about the status of Diadema populations before and after die-off on Cuban reefs, anecdotal information suggests that populations were struck. We analyzed spatial variation in the abundance and size structure of D. antillarum in 22 reefs sites in Jardines de la Reina, from June 2004 to September 2005. Counts of Diadema were performed in five 30x2 m transects at each sampling site and sampling time, and test diameters were measured in September 2005 at the same fore reefs. Abundances were higher at reef crests (mean densities 0.08-2.18 ind./m2), while reef slope populations reached a maximum site level of 0.13 ind./m2 at only one site and showed values up to three orders of magnitude lower than those from reef crests. Highest abundance occurred at the west margin of major channels between keys where larval recruitment seems to be favored by local oceanographic features and facilitated by the abundance of Echinometra lucunter. The size frequency distribution of D. antillarum indicates that recruitment began to be noticeable three years before September 2005, suggesting these populations were depleted in the past and they are recovering now.

  20. Abundance, distribution and size structure of Diadema antillarum (Echinodermata: Diadematidae in South Eastern Cuban coral reefs

    Directory of Open Access Journals (Sweden)

    F Martín Blanco

    2010-06-01

    Full Text Available The 1983-1984 mass mortality event of Diadema antillarum affected more than 93% of the total Caribbean population. Although there are no records about the status of Diadema populations before and after die-off on Cuban reefs, anecdotal information suggests that populations were struck. We analyzed spatial variation in the abundance and size structure of D. antillarum in 22 reefs sites in Jardines de la Reina, from June 2004 to September 2005. Counts of Diadema were performed in five 30x2m transects at each sampling site and sampling time, and test diameters were measured in September 2005 at the same fore reefs. Abundances were higher at reef crests (mean densities 0.08-2.18 ind./m², while reef slope populations reached a maximum site level of 0.13 ind./m² at only one site and showed values up to three orders of magnitude lower than those from reef crests. Highest abundance occurred at the west margin of major channels between keys where larval recruitment seems to be favored by local oceanographic features and facilitated by the abundance of Echinometra lucunter. The size frequency distribution of D. antillarum indicates that recruitment began to be noticeable three years before September 2005, suggesting these populations were depleted in the past and they are recovering now. Rev. Biol. Trop. 58 (2: 663-676. Epub 2010 June 02.

  1. The more frequent types of human papillomavirus in Cuban samples of cervix cancer

    International Nuclear Information System (INIS)

    Rios Hernandez, Maria de los Angeles; Hernandez Menendez, Maite; Aguilar Vela de Oro, Francisco Orlando

    2010-01-01

    Cervix cancer (UCC) is considered a sexually transmitted disease due to factors involved in its appearance and development and this infection is recognized as the main etiological agent of this entity. In Cuba this type of tumor is placed in 2nd category in incidence and in 4th place in mortality among the malignant disease affecting the female sex. The objective of present study is to determine the types of human virus papilloma (HVP) present in samples of cervix tumors in Cuban women, as well as to describe the behavior of different risk factors associated with this disease. Forty five samples of cervix cancer were analyzed and the presence of 20 types of HVP was determined by polymerase chain reaction with specific primers founding in them a 91,1% of positivity. Genotype 16 was the more prevalent, followed by the 18, 45, 31, 39, 51, 56, 59, PAP23A. The low risk type 6 and 11 weren't founded in samples. Promiscuity was the more interesting risk factor in our study. Knowledge of the viral types present in cervix cancer in our patients is very important when we approach the development and the use of prophylactic and therapeutical vaccines

  2. Asymbiotic germination in vitro in seeds of four species of Cuban orchids

    Directory of Open Access Journals (Sweden)

    Loexis Rodríguez

    2001-04-01

    Full Text Available About the most of 300 species of Cuban native orchids is have few reference of the micropropagation in the science literature. However, the biotechnical techniques fulfill an important acting in the rescue of threatened species. By that in the laboratory of Vegetable Biotechnology of the Mountain Development Center in Guantanamo, aspects related with the germination were studied in vitro of Campylocentrum micrantrum, Encyclia cochleata, Epidendrum difforme and Oceoclade maculata using the salts of the culture medium Murashige and Skoog (1962 and Knudson (1946, increasing with activate charcoal (0; 1; 2 g.l-1, Agar tachnical No. 3 6 g.l-1 and the adjusted pH at 5.6. The seeds was incubated under conditions of 16 hours light to intensity of 27 uMol.m².s-¹ and 24 ± 1 °C. The reached results showed that the germination of the studied species was obtained under different times and conditions of the medium of cultivation where it stood out for the smallest time used for the germination Encyclia cochleata to the eight weeks in the salts of Murashige and Skoog (1962 and without the addition of activated charcoal, as long as Oceoclade maculata needed 24 weeks to germinate. Key words: antioxidante, biotechnology, flowers, micropropagación, native species

  3. Doubling Syndemics

    Science.gov (United States)

    2017-01-01

    Abstract This study investigates health concerns and access to health services for Roma from Romania who live in homelessness in Copenhagen, Denmark. They collect refundable bottles and call themselves “badocari,” which in Romanian refers to “people who work with bottles.” Homeless Roma in Denmark have not previously been studied through ethnographic research. The study stresses the importance of a syndemic approach towards understanding badocari health concerns. Syndemics is understood as co-occurring diseases, which unfold within contexts of social injustice. The case of the badocari is argued to be a case of “doubling syndemics” since the co-occurring diseases are further multiplied and enhanced by an ongoing mobility between dual contexts of precarious livelihoods in Romania and Denmark, respectively. The study complements the approach to syndemics with a perspective on human rights. It sheds light on the limited possibilities that exist for addressing health concerns of the badocari, both in Romania and in Denmark, and argues that the universal human right to health is not realized in the everyday lives of destitute EU migrants such as the badocari. Rather, they experience lack of access to adequate medical treatment and follow-up care, both as citizens of a member state and as co-citizens of the European Union. PMID:29302164

  4. Double inflation

    International Nuclear Information System (INIS)

    Silk, J.; Turner, M.S.

    1986-04-01

    The Zel'dovich spectrum of adiabatic density perturbations is a generic prediction of inflation. There is increasing evidence that when the spectrum is normalized by observational data on small scales, there is not enough power on large scales to account for the observed large-scale structure in the Universe. Decoupling the spectrum on large and small scales could solve this problem. As a means of decoupling the large and small scales we propose double inflation (i.e., two episodes of inflation). In this scenario the spectrum on large scales is determined by the first episode of inflation and those on small scales by a second episode of inflation. We present three models for such a scenario. By nearly saturating the large angular-scale cosmic microwave anisotropy bound, we can easily account for the observed large-scale structure. We take the perturbations on small scales to be very large, deltarho/rho approx. = 0.1 to 0.01, which results in the production of primordial black holes (PBHs), early formation of structure, reionization of the Universe, and a rich array of astrophysical events. The Ω-problem is also addressed by our scenario. Allowing the density perturbations produced by the second episode of inflation to be large also lessens the fine-tuning required in the scalar potential and makes reheating much easier. We briefly speculate on the possibility that the second episode of inflation proceeds through the nucleation of bubbles, which today manifest themselves as empty bubbles whose surfaces are covered with galaxies. 37 refs., 1 fig

  5. Revolución Cubana y educación superior The Cuban Revolution and higher education

    Directory of Open Access Journals (Sweden)

    Sinesio C. Santos Gutiérrez

    2007-06-01

    Full Text Available Los autores elaboran un panorama de la educación superior cubana de los últimos años, subrayando los desafíos económicos y políticos debidos a las dificultades que el gobierno de Cuba está enfrentando desde 1989 (la desaparición del campo socialista; el recrudecimiento del bloqueo de EE.UU, la crisis económica y social del Sur; la "victoria del neoliberalismo", la necesidad de insertarse en un nuevo tipo de mercado mundial global. El artículo analiza las demandas e indicadores de la educación superior cubana, realzando las transformaciones que ocurren especialmente a partir del año 2001 respecto al aumento de la equidad, políticas de inclusión y consolidación de un nuevo modelo de ciencia y tecnología. Además, los autores presentan una tipología de la educación superior y consideran sus impactos en la sociedad cubana.The authors trace a view of Cuban higher education in recent years, emphasizing the economic and political challenges due to the difficulties faced by Cuba since 1989 at national and international levels (disappearance of the socialist field, tightening of the American blockade, the social and economic crisis of the South, the "victory of neo-liberalism", the need to insert itself in a new type of global market, etc.. The article analyses the demands and indicators of Cuban higher education, stressing the transformations that have occurred particularly after 2001, in relation to the increase of equity and inclusion policies, as well as the consolidation of a new model of science and technology. Furthermore, the authors present a typology of higher education and consider its impacts on the Cuban society.

  6. Synthesis, Crystal Structure, and Magnetic Properties of a New Mixed Metal (Co(II, Ni(II Cubane

    Directory of Open Access Journals (Sweden)

    Ramadan Mohamed Elmehdawi

    2017-02-01

    Full Text Available The mixed Co(II/Ni(II complex, [Co2.67Ni1.33L4(CH3COO2][BPh4]2·0.75H2O where HL = 4-(salicylaldimineantipyrine, was isolated as an orange solid from the reaction of 4-(salicylaldimineantipyrine, with mixed cobalt(II acetate and nickel(II acetate in ethanol. The complex was characterized by Frustrated Total Internal Reflection (FTIR, UltraViolet Visible spectroscopy (UV-Vis, X-ray single crystal diffraction, and by elemental analysis. The complex is composed of two symmetry independent cationic units, A and B. The two units are essentially isostructural; nevertheless, small differences exist between them. The units contain four metal atoms, arranged at the corners of a distorted cubane-like core alternately with phenoxy oxygen of the Schiff base. The overall eight corners occupied by metal ions in the asymmetric unit are shared between cobalt and nickel in a 5.33:2.67 ratio. Each metal divalent cation binds three coordinated sites from the corresponding tridentate Schiff base ligand, the fourth one is bound by the acetate oxygen, the fifth and the sixth donor sites come from the phenolate oxygens of other Schiff base ligands. Intermolecular hydrogen bonds join the complexes to the water molecules present in the crystal packing. The magnetic characterization was carried out for this new complex and for its isostructural counterpart containing only cobalt ions. The magnetic measurements for the cobalt(II/nickel(II mixed compound indicate either antiferromagnetic interactions among the two cubanes or an anisotropic contribution, whereas a ferromagnetic interaction is observed within the cubane, for both the complexes, as expected by geometrical considerations. A comparison between the magnetic properties of the pure cobalt(II derivative and similar systems discussed in literature, is presented.

  7. Acquired and introduced macroparasites of the invasive Cuban treefrog, Osteopilus septentrionalis

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    Nicole Ortega

    2015-12-01

    Full Text Available Because shifts in host–parasite relationships can alter host populations, attention should be given to the parasites that introduced species take with them or acquire in their introduced range. The Cuban treefrog, Osteopilus septentrionalis, is a successful invasive species in Florida with its parasites in the native range being well-documented, but there is a void in the literature regarding what parasites were lost or introduced in its expansion. We necropsied 330 O. septentrionalis from Tampa, FL and compared their macroparasites to those of O. septentrionalis in their native range and to the parasites of anurans native to the Tampa, FL area to determine the species O. septentrionalis likely introduced or acquired in Florida. At least nine parasite species (Aplectana sp., Oswaldocruzia lenteixeirai, Cylindrotaenia americana, Physaloptera sp., Rhabdias sp., Centrorhynchus sp., unidentified trematode metacercariae, unidentified larval acuariids, and unidentified pentastomids were isolated. We found no differences in parasite communities of adult male and female frogs, which averaged 19.36 parasite individuals and 1.39 parasite species per adult frog, and had an overall prevalence of 77.52%. Acuariid larvae were likely acquired by O. septentrionalis in FL because they are not found in their native range. O. lenteixeirai was likely introduced because it is commonly reported in O. septentrionalis' native range but has never been reported in FL-native anurans. Aplectana sp. is also likely introduced because it has been reported in several anurans in Cuba but only reported once in Florida. O. septentrionalis tended to harbor fewer of its native parasites in the introduced range, which is consistent with the enemy release hypothesis and potentially creates an immunological advantage for this invasive host. Because native populations can be threatened by introduced parasites, there is a need to further explore the frequency and rate at which

  8. Microsatellite typing and susceptibilities of serial Cryptococcus neoformans isolates from Cuban patients with recurrent cryptococcal meningitis.

    Science.gov (United States)

    Illnait-Zaragozí, María T; Martínez-Machín, Gerardo F; Fernández-Andreu, Carlos M; Hagen, Ferry; Boekhout, Teun; Klaassen, Corné H W; Meis, Jacques F

    2010-10-04

    Cryptococcus neoformans is commonly associated with meningoencephalitis in immunocompromised patients and occasionally in apparently healthy individuals. Recurrence of infection after initial treatment is not uncommon. We studied C. neoformans isolates from 7 Cuban patients with recurrent cryptococcal meningitis. Antifungal susceptibility and genotyping with microsatellite molecular typing were carried out. Isolates (n = 19) were recovered from cerebrospinal fluid, blood, urine and semen. Antifungal susceptibilities for amphotericin B, fluconazole, flucytosine, itraconazole, voriconazole, posaconazole and isavuconazole were tested by CLSI M27A3 broth microdilution method. Genotyping was done using a panel of 9 microsatellite (STR) markers: (CT)n, (TG)n, (TA)n, (CTA)n, (TCT)n, (CCA)n, (TTAT)n, (ATCC)n and (TATT)n. The average number of isolates/patient was 2.71. The mean time interval between the collection of any two isolates was 52.5 days. All strains were identified as C. neoformans var. grubii (serotype Aα). Although none of the strains were resistant to the studied drugs, in serial isolates from two patients, MICs values of triazoles increased 4-5 log2 dilutions over time. STR patterns showed 14 distinctive profiles. In three patients the recurrent infection was associated with genotypically identical isolates. The four other patients had relapse isolates which were genotypically different from the initial infecting strain. Recurrences of cryptococcal meningitis in our series of patients was not associated with development of drug resistance of the original strain but by an initial infection with different strains or a reinfection with a new strain.

  9. Phylogeography of Cuban Rivulus: evidence for allopatric speciation and secondary dispersal across a marine barrier.

    Science.gov (United States)

    Ponce de León, José Luis; León, Gunnary; Rodríguez, Rodet; Metcalfe, Cushla J; Hernández, Damir; Casane, Didier; García-Machado, Erik

    2014-10-01

    The genus Rivulus is currently comprised of two species, R. cylindraceus and R. insulaepinorum, which are endemic to Cuba. However, the taxonomic status of the latter species remains dubious because of the poor quality of the original description. In addition, a recent barcoding survey suggests that the two species may be conspecific. The aim of this study was to test the hypothesis that the two species represent a single evolutionary clade. To delimit the species and their evolutionary history, we used a combination of molecular phylogenetic analyses, with both mitochondrial and nuclear sequences, tests of phylogeographic hypotheses, combined with morphological measurements and information on known dispersal barriers and species distribution. None of the data sets support R. insulaepinorum and R. cylindraceus as separate taxa. However, a new species, restricted to the northwestern part of the main island, was identified by phylogenetic analyses, body colour pattern and geographical distribution. The evolutionary distance between the two lineages (cytb, d=15%; CAM-4, d=2.5%) indicates a long period of divergence. Phylogeographic analyses shed light on the dispersal history of R. cylindraceus, which probably originated on the Isla de la Juventud. They also suggest that each lineage had contrasting histories; Rivulus sp. is restricted to a relatively small geographic area whereas R. cylindraceus has dispersed considerably and more than once from its centre of origin, probably facilitated by sea level fluctuations. These results strengthen previous findings, i.e. that the diversity of Cuban freshwater fishes is far from well-known and deserves more in-depth studies, and that vicariance and dispersal events have resulted in a complex biogeographical landscape which has had a significant impact on the freshwater fishes of the Caribbean islands. Copyright © 2014 Elsevier Inc. All rights reserved.

  10. Macrosomia Predictors in Infants Born to Cuban Mothers with Gestational Diabetes.

    Science.gov (United States)

    Cruz, Jeddú; Grandía, Raiden; Padilla, Liset; Rodríguez, Suilbert; Hernández García, Pilar; Lang Prieto, Jacinto; Márquez-Guillén, Antonio

    2015-07-01

    INTRODUCTION Fetal macrosomia is the most important complication in infants of women with diabetes, whether preconceptional or gestational. Its occurrence is related to certain maternal and fetal conditions and negatively affects maternal and perinatal outcomes. The definitive diagnosis is made at birth if a newborn weighs >4000 g. OBJECTIVE Identify which maternal and fetal conditions could be macrosomia predictors in infants born to Cuban mothers with gestational diabetes. METHODS A case-control study comprising 236 women with gestational diabetes who bore live infants (118 with macrosomia and 118 without) was conducted in the América Arias University Maternity Hospital, Havana, Cuba, during 2002-2012. The dependent variable was macrosomia (birth weight >4000 g). Independent maternal variables included body mass index at pregnancy onset, overweight or obesity at pregnancy onset, gestational age at diabetes diagnosis, pregnancy weight gain, glycemic control, triglycerides and cholesterol. Fetal variables examined included third-semester fetal abdominal circumference, estimated fetal weight at ≥28 weeks (absolute and percentilized by Campbell and Wilkin, and Usher and McLean curves). Chi square was used to compare continuous variables (proportions) and the student t test (X ± SD) for categorical variables, with significance threshold set at p macrosomia were for maternal hypertriglyceridemia (OR 4.80, CI 2.34-9.84), third-trimester fetal abdominal circumference >75th percentile (OR 7.54, CI 4.04-14.06), and estimated fetal weight >90th percentile by Campbell and Wilkin curves (OR 4.75, CI 1.42-15.84) and by Usher and McLean curves (OR 8.81, CI 4.25-18.26). CONCLUSIONS Most variables assessed were predictors of macrosomia in infants of mothers with gestational diabetes. They should therefore be taken into account for future studies and for patient management. Wide confidence intervals indicate uncertainty about the magnitude of predictive power. KEYWORDS Fetal

  11. Biochemical and molecular characterization of the venom from the Cuban scorpion Rhopalurus junceus.

    Science.gov (United States)

    García-Gómez, B I; Coronas, F I V; Restano-Cassulini, R; Rodríguez, R R; Possani, L D

    2011-07-01

    This communication describes the first general biochemical, molecular and functional characterization of the venom from the Cuban blue scorpion Rhopalurus junceus, which is often used as a natural product for anti-cancer therapy in Cuba. The soluble venom of this arachnid is not toxic to mice, injected intraperitoneally at doses up to 200 μg/20 g body weight, but it is deadly to insects at doses of 10 μg per animal. The venom causes typical alpha and beta-effects on Na+ channels, when assayed using patch-clamp techniques in neuroblastoma cells in vitro. It also affects K+ currents conducted by ERG (ether-a-go-go related gene) channels. The soluble venom was shown to display phospholipase, hyaluronidase and anti-microbial activities. High performance liquid chromatography of the soluble venom can separate at least 50 components, among which are peptides lethal to crickets. Four such peptides were isolated to homogeneity and their molecular masses and N-terminal amino acid sequence were determined. The major component (RjAa12f) was fully sequenced by Edman degradation. It contains 64 amino acid residues and four disulfide bridges, similar to other known scorpion toxins. A cDNA library prepared from the venomous glands of one scorpion allowed cloning 18 genes that code for peptides of the venom, including RjA12f and eleven other closely related genes. Sequence analyses and phylogenetic reconstruction of the amino acid sequences deduced from the cloned genes showed that this scorpion contains sodium channel like toxin sequences clearly segregated into two monophyletic clusters. Considering the complex set of effects on Na+ currents verified here, this venom certainly warrant further investigation. Copyright © 2011 Elsevier Ltd. All rights reserved.

  12. Cuban experience in verification of the execution of the safety requirements during the transport of radioactive materials

    International Nuclear Information System (INIS)

    Quevedo Garcia, J.R.; Lopez Forteza, Y.

    2001-01-01

    The Cuban Regulatory Authority has paid special attention to the verification of the execution of the safety requirements during the transport of radioactive material in the country. With this purpose, the Authority has followed a consequent policy based on supplementary demands to those collections in the juridical mark settled down in 1987 in the sphere of transport of radioactive substances. In the work the technical approaches are exposed kept in mind when establishing the one referred politics, the current situation is characterized, the results are evaluated obtained in correspondence with the pursued objectives and the essential aspects are exposed to keep in mind for the adopted politics ulterior development. (author)

  13. Radiological Characterization of cuban coffee and estimation of the doses received by the population due to coffee consumption

    International Nuclear Information System (INIS)

    Fernandez Gomez, I.M.; Rodriguez Castro, G.; Perez Sanchez, D.

    1996-01-01

    The purpose of this paper is to study the radioactivity levels in the coffee produced and consumed in our country and to estimate the doses received by the Cuban people due to its consumption. As a results of this study the most relevant radionuclide was K 40 , due to the concentration levels found only considering it when estimating the annual committed dose that is received thought this via. The K 40 concentration value present in the infusion represented a dose for the consumer of 15.6 u Sv/year

  14. Decadal variability in growth of the Caribbean spiny lobster Panulirus argus (Decapoda: Paniluridae in Cuban waters

    Directory of Open Access Journals (Sweden)

    Maria Estela de León

    2005-09-01

    Full Text Available Annual von Bertalanffy growth parameters of the Caribbean spiny lobster (Panulirus argus in Cuban waters were estimated from a long term study (40 years by length-based methods ELEFAN and the new version of SLCA. Data of around 800 000 lobsters (with carapace length ranging 14 to 199mm were randomly sampled in artificial shelters (a non selective fishing gear very common in the lobster fishery, through the field monitory program established for this species since 1963 in 14 localities of southwestern Cuban shelf. The software ELEFAN showed problems to converge in an optimal combination of the instantaneous growth coefficient (K and the asymptotic length (L8 of the von Bertalanffy equation, whereas the new SLCA software produced value estimates of K between 0.20 and 0.27 year-1 and values of L8 between 177 and 190 mm carapace length, all within the range reported in the literature. The standardized anomalies of both parameters showed the presence of cycles along the analyzed time series. Decadal variability in growth parameters was revealed through the spectral analysis indicating cycles of 16 and 20 years for K and of 16 years for L8. The incidence of some factors such as biomass and temperature that modulate growth in this crustacean was explored, using a nonlinear multiple regression model. These combined factors explained 33% and 69% of the variability of K and L8 respectively. The growth coefficient appeared to be maximum with annual mean sea surface temperature of 28.1º C and the largest L 8is reached at a annual men biomass level of 23 000 t. These results should be the basis to understand the Cuban lobster population dynamics. Rev. Biol. Trop. 53(3-4: 475-486. Epub 2005 Oct 3.Los parámetros de crecimiento anuales para la langosta espinosa del Caribe (Panulirus argus en aguas cubanas se estimaron para una serie de 40 años de datos de composición por longitud, a través de los métodos indirectos basados en la talla ELEFAN y el nuevo

  15. Double hard scattering without double counting

    Science.gov (United States)

    Diehl, Markus; Gaunt, Jonathan R.; Schönwald, Kay

    2017-06-01

    Double parton scattering in proton-proton collisions includes kinematic regions in which two partons inside a proton originate from the perturbative splitting of a single parton. This leads to a double counting problem between single and double hard scattering. We present a solution to this problem, which allows for the definition of double parton distributions as operator matrix elements in a proton, and which can be used at higher orders in perturbation theory. We show how the evaluation of double hard scattering in this framework can provide a rough estimate for the size of the higher-order contributions to single hard scattering that are affected by double counting. In a numeric study, we identify situations in which these higher-order contributions must be explicitly calculated and included if one wants to attain an accuracy at which double hard scattering becomes relevant, and other situations where such contributions may be neglected.

  16. Double hard scattering without double counting

    Energy Technology Data Exchange (ETDEWEB)

    Diehl, Markus [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Gaunt, Jonathan R. [VU Univ. Amsterdam (Netherlands). NIKHEF Theory Group; Schoenwald, Kay [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)

    2017-02-15

    Double parton scattering in proton-proton collisions includes kinematic regions in which two partons inside a proton originate from the perturbative splitting of a single parton. This leads to a double counting problem between single and double hard scattering. We present a solution to this problem, which allows for the definition of double parton distributions as operator matrix elements in a proton, and which can be used at higher orders in perturbation theory. We show how the evaluation of double hard scattering in this framework can provide a rough estimate for the size of the higher-order contributions to single hard scattering that are affected by double counting. In a numeric study, we identify situations in which these higher-order contributions must be explicitly calculated and included if one wants to attain an accuracy at which double hard scattering becomes relevant, and other situations where such contributions may be neglected.

  17. Structural and magnetic characterization of a tetranuclear copper(II) cubane stabilized by intramolecular metal cation-π interactions.

    Science.gov (United States)

    Papadakis, Raffaello; Rivière, Eric; Giorgi, Michel; Jamet, Hélène; Rousselot-Pailley, Pierre; Réglier, Marius; Simaan, A Jalila; Tron, Thierry

    2013-05-20

    A novel tetranuclear copper(II) complex (1) was synthesized from the self-assembly of copper(II) perchlorate and the ligand N-benzyl-1-(2-pyridyl)methaneimine (L(1)). Single-crystal X-ray diffraction studies revealed that complex 1 consists of a Cu4(OH)4 cubane core, where the four copper(II) centers are linked by μ3-hydroxo bridges. Each copper(II) ion is in a distorted square-pyramidal geometry. X-ray analysis also evidenced an unusual metal cation-π interaction between the copper ions and phenyl substituents of the ligand. Calculations based on the density functional theory method were used to quantify the strength of this metal-π interaction, which appears as an important stabilizing parameter of the cubane core, possibly acting as a driving parameter in the self-aggregation process. In contrast, using the ligand N-phenethyl-1-(2-pyridyl)methaneimine (L(2)), which only differs from L(1) by one methylene group, the same synthetic procedure led to a binuclear bis(μ-hydroxo)copper(II) complex (2) displaying intermolecular π-π interactions or, by a slight variation of the experimental conditions, to a mononuclear complex (3). These complexes were studied by X-ray diffraction techniques. The magnetic properties of complexes 1 and 2 are reported and discussed.

  18. Value of scintigraphy with Cuban 99mTc-ciprofloxacin in the detection of infected hip prostheses

    International Nuclear Information System (INIS)

    Marrero Riveron, Luis O; Alvarez Cambras, Rodrigo; Hernandez Cairo, Abel; Batista Cuellar, Juan F; Guerra Ordonnez, Carlos Alberto; Perera Pintado, Alejandro

    2006-01-01

    An experimental, analytical cross-sectional study was conducted in 15 patients with suspicion of infectious process that were referred to 'Frank Pais' International Scientific Orthopedic Complex from January 1st, 2003 to December 31st, 2004, aimed at determining the efficacy of the Cuban 99mTc-ciprofloxacin in the evaluation of bacterial infections of the hip prostheses. Bone scintigraphies with 99mTc-methylendiphosphonate and 99mTc-ciprofloxacin were performed at 1, 4 and 24 hours after the injection. The culture/biopsy was used to confirm the criteria. On the visual analysis of the patients, sensitivity was obtained in 100 %, specificity in 75 %, diagnostic accuracy in 93.3 %, positive predictive value in 91.6 %, and negative predictive value in 100 %. The injured/healthy ratio showed significant differences between the patients with and without infection at the diverse hours of acquisition, with a level of significance of a = 0.05. The effectiveness of the Cuban formulation of 99mTc-ciprofloxacin in the evaluation of bacterial infections of the hip prostheses was proved

  19. Negotiating horizontality in medical South-South cooperation: The Cuban mission in Rio de Janeiro's urban peripheries.

    Science.gov (United States)

    Lidola, Maria; Borges, Fabiano Tonaco

    2018-03-01

    For more than 50 years, Cuba has been one of the most important players in the field of international medical cooperation in the Global South. Between 2013 and 2016, Cuba maintained one of its largest cooperations with Brazil: nearly 11,400 Cuban physicians were sent to work within the framework of the Brazilian health programme 'More-Doctors-for-Brazil', which was implemented to improve Brazil's precarious public health sector. This paper inquires into the manifold challenges of horizontal connectivity in this medical South-South cooperation. We will trace these back to deep-rooted contentions about the epistemological approaches to medical practice and professional recognition within and between Cuban and Brazilian arenas of public health, which do not, however, conform to a simplistic socialism-capitalism dichotomy. Rather, this particular South-South cooperation reveals significant differences in how powerful the postcolonial legacies of medical assistance remain in Global Health settings. This paper explores how these legacies may impact on the moral and professional legitimacy of the individuals involved in South-South partnership. Using ethnographic findings in newly established family clinics situated in urban poverty regions in Rio de Janeiro's North, we will also show how prolonged local interactions may create new spaces of horizontal encounters and connectivity in international medical cooperation.

  20. Molecular phylogeny and phylogeography of the Cuban cave-fishes of the genus Lucifuga: evidence for cryptic allopatric diversity.

    Science.gov (United States)

    García-Machado, Erik; Hernández, Damir; García-Debrás, Alfredo; Chevalier-Monteagudo, Pedro; Metcalfe, Cushla; Bernatchez, Louis; Casane, Didier

    2011-11-01

    Underground environments are increasingly recognized as reservoirs of faunal diversity. Extreme environmental conditions and limited dispersal ability of underground organisms have been acknowledged as important factors promoting divergence between species and conspecific populations. However, in many instances, there is no correlation between genetic divergence and morphological differentiation. Lucifuga Poey is a stygobiotic fish genus that lives in Cuban and Bahamian caves. In Cuba, it offers a unique opportunity to study the influence of habitat fragmentation on the genetic divergence of stygobiotic species and populations. The genus includes four species and one morphological variant that have contrasting geographical distributions. In this study, we first performed a molecular phylogenetic analysis of the Lucifuga Cuban species using mitochondrial and nuclear markers. The mitochondrial phylogeny revealed three deeply divergent clades that were supported by nuclear and morphological characters. Within two of these main clades, we identified five lineages that are candidate cryptic species and a taxonomical synonymy between Lucifuga subterranea and Lucifuga teresinarum. Secondly, phylogeographic analysis using a fragment of the cytochrome b gene was performed for Lucifuga dentata, the most widely distributed species. We found strong geographical organization of the haplotype clades at different geographic scales that can be explained by episodes of dispersal and population expansion followed by population fragmentation and restricted gene flow. At a larger temporal scale, these processes could also explain the diversification and the distribution of the different species. Copyright © 2011 Elsevier Inc. All rights reserved.

  1. Oxygen-atom transfer chemistry and thermolytic properties of a di-tert-butylphosphate-ligated Mn4O4 cubane.

    Science.gov (United States)

    Van Allsburg, Kurt M; Anzenberg, Eitan; Drisdell, Walter S; Yano, Junko; Tilley, T Don

    2015-03-16

    [Mn4O4{O2P(OtBu)2}6] (1), an Mn4O4 cubane complex combining the structural inspiration of the photosystem II oxygen-evolving complex with thermolytic precursor ligands, was synthesized and fully characterized. Core oxygen atoms within complex 1 are transferred upon reaction with an oxygen-atom acceptor (PEt3), to give the butterfly complex [Mn4O2{O2P(OtBu)2}6(OPEt3)2]. The cubane structure is restored by reaction of the latter complex with the O-atom donor PhIO. Complex 1 was investigated as a precursor to inorganic Mn metaphosphate/pyrophosphate materials, which were studied by X-ray absorption spectroscopy to determine the fate of the Mn4O4 unit. Under the conditions employed, thermolyses of 1 result in reduction of the manganese to Mn(II) species. Finally, the related butterfly complex [Mn4O2{O2P(pin)}6(bpy)2] (pin = pinacolate) is described. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. Isolation and complete genomic characterization of pandemic H1N1/2009 influenza viruses from Cuban swine herds.

    Science.gov (United States)

    Pérez, Lester Josué; Perera, Carmen Laura; Vega, Armando; Frías, Maria T; Rouseaux, Dagmar; Ganges, Llilianne; Nuñez, José Ignacio; Díaz de Arce, Heidy

    2013-06-01

    The emergence of the pandemic H1N1/2009 influenza virus poses a potential global threat for human and animal health. In this study, we carried out pandemic H1N1/2009 influenza virus surveillance in swine herds in Cuba intending to determine whether the virus was circulating among pig populations. As a result we describe, for the first time, the detection of pandemic H1N1/2009 influenza virus in swine herds in Cuba. In addition, phylogenetic analysis and molecular characterization of three viral isolates were performed. Phylogenetic relationships confirmed that all of the eight genes of the three isolates were derived from the pandemic H1N1/2009 virus. The Cuban isolates, formed an independent cluster within the pandemic H1N1/2009 influenza strains. Different molecular markers, previously described in pandemic H1N1/2009 influenza viruses, related with adaptive evolution, viral evasion from the host-immune response, virulence and dissemination were also present in Cuban pandemic H1N1/2009 isolates. Copyright © 2012 Elsevier Ltd. All rights reserved.

  3. "A minimum of urbanism and a maximum of ruralism": the Cuban experience.

    Science.gov (United States)

    Gugler, J

    1980-01-01

    The case of Cuba provides social scientists with reasonably good information on urbanization policies and their implementation in 1 developing country committed to socialism. The demographic context is considered, and Cuban efforts to eliminate the rural-urban contradiction and to redefine the role of Havana are described. The impact of these policies is analyzed in terms of available data on urbanization patterns since January 1959 when the revolutionaries marched into Havana. Prerevolutionary urbanization trends are considered. Fertility in Cuba has declined simultaneously with mortality and even more rapidly. Projections assume a 1.85% annual growth rate, resulting in a population of nearly 15 million by the year 2000. Any estimate regarding the future trend in population growth must depend on prognosis of general living conditions and of specific government policies regarding contraception, abortion, female labor force participation, and child care facilities. If population growth in Cuba has been substantial, but less dramatic than that of many other developing countries, urban growth presents a similar picture. Cuba's highest rate of growth of the population living in urban centers with a population over 20,000, in any intercensal period during the 20th century, was 4.1%/year for 1943-1953. It dropped to 3.0% in the 1953-1970 period. Government policies achieved a measure of success in stemming the tide of rural-urban migration, but the aims of the revolutionary leadership went further. The objective was for urban dwellers to be involved in agriculture, and the living standards of the rural population were to be raised to approximate those of city dwellers. The goal of "urbanizing" the countryside found expression in a program designed to construct new small towns which could more easily be provided with services. A slowdown in the growth of Havana, and the concomitant weakening of its dominant position, was intended by the revolutionary leadership. Offical

  4. Assessment of an ELISA for serodiagnosis of active pulmonary tuberculosis in a Cuban population

    Directory of Open Access Journals (Sweden)

    Julio Cesar Ayala

    2015-10-01

    Full Text Available Objective: To explore the serodiagnostic potential of the five recombinant Mycobacterium tuberculosis antigens CFP-10 (Rv3874, ESAT-6 (Rv3875, APA (Rv1860, PstS-1 (Rv0934, Ag85A (Rv3804c and their combination in a Cuban population with active pulmonary tuberculosis. Methods: The serodiagnostic potential of the recombinant antigens rESAT-6, rCFP-10, rAPA, rPstS-1 produced in Escherichia coli, rAg85A produced in Streptomyces lividans and the combination of the five proteins was evaluated by an indirect ELISA. Humoral immune response was analysed in a group of 140 patients with active pulmonary tuberculosis (smear-, Mantoux- and culture-positive and in a control group consisting of 34 bacillus CalmetteGuerin vaccinated, Mantoux-negative, healthy subjects. Results: With the exception of CFP-10, the use of the separate recombinant antigens or the antigenic cocktail in ELISA-based serodiagnosis resulted in a significant difference in the mean optical densitiy values between sera of patients and healthy subjects. The highest sensitivity of the assay using single antigens, being 58.57%, was achieved with rPstS-1 compared to 27.14% with rCFP-10, 31.65% with Ag85A, 42.86% with rAPA and 44.29% with rESAT-6. Single antigen ELISAs provided high specificity values ranging from 94.12% to 97.06%. A cocktail of the aforementioned antigens increased the sensitivity to 87.14% and the specificity to 97.06%. Conclusions: An ELISA using a multi-antigen mix containing recombinant immuno-dominant antigens of Mycobacterium tuberculosis, namely, rCFP-10, rESAT-6, rAPA, rPstS-1 and rAg85, increases the sensitivity and specificity compared with that using the single antigens and shows potential as a complementary tool for the diagnosis of active pulmonary tuberculosis in Cuba.

  5. 31 CFR 515.549 - Bank accounts and other property of non-Cuban citizens who were in Cuba on or after July 8, 1963.

    Science.gov (United States)

    2010-07-01

    ... satisfactorily demonstrating that they have established residence in a foreign country in the authorized trade territory. (b) Decedents who died in Cuba on or after July 8, 1963. Specific licenses are issued authorizing the administration of the estates of non-Cuban decedents who died in Cuba, provided that any...

  6. Internal Dosimetry and the pharmacokinetic of the Cuban Kit of Methoxy-Isobutyl-Isonitrile (MIBI) marked with 99mTc

    International Nuclear Information System (INIS)

    Torres, L.A.; Pereztol, O.; Rodriguez, J.L.; Alvarez, I.; Fraxedas, R.; Mesa, G.; Rodriguez, R.

    1998-01-01

    The objective of the present work consisted on evaluating the Internal Dosimetry and the pharmacokinetic of the Cuban Kit of Methoxy-Isobutyl-Isonitrile (MIBI) marked with 99mTc. In the dosimetry studies and biodistribution five healthy volunteers were included and in the pharmacokinetic studies five patients were included with less than 5% of probability of suffering illness of artery coronary

  7. Analysis of policy implications and challenges of the Cuban health assistance program related to human resources for health in the Pacific

    Directory of Open Access Journals (Sweden)

    Asante Augustine D

    2012-05-01

    Full Text Available Abstract Background Cuba has extended its medical cooperation to Pacific Island Countries (PICs by supplying doctors to boost service delivery and offering scholarships for Pacific Islanders to study medicine in Cuba. Given the small populations of PICs, the Cuban engagement could prove particularly significant for health systems development in the region. This paper reviews the magnitude and form of Cuban medical cooperation in the Pacific and analyses its implications for health policy, human resource capacity and overall development assistance for health in the region. Methods We reviewed both published and grey literature on health workforce in the Pacific including health workforce plans and human resource policy documents. Further information was gathered through discussions with key stakeholders involved in health workforce development in the region. Results Cuba formalised its relationship with PICs in September 2008 following the first Cuba-Pacific Islands ministerial meeting. Some 33 Cuban health personnel work in Pacific Island Countries and 177 Pacific island students are studying medicine in Cuba in 2010 with the most extensive engagement in Kiribati, the Solomon Islands, Tuvalu and Vanuatu. The cost of the Cuban medical cooperation to PICs comes in the form of countries providing benefits and paying allowances to in-country Cuban health workers and return airfares for their students in Cuba. This has been seen by some PICs as a cheaper alternative to training doctors in other countries. Conclusions The Cuban engagement with PICs, while smaller than engagement with other countries, presents several opportunities and challenges for health system strengthening in the region. In particular, it allows PICs to increase their health workforce numbers at relatively low cost and extends delivery of health services to remote areas. A key challenge is that with the potential increase in the number of medical doctors, once the local students

  8. Scaling cigars in the Cuban tourism economy Configurar a escala dos charutos na economia do turismo em Cuba

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    Valerio Simoni

    2009-11-01

    Full Text Available Taking scale as an object of analysis (Tsing 2000, this article examines how competing scale-making projects emerge in different layers of the Cuban tourism economy. I consider how tourists and Cubans interact along contested chains of production and distribution of cigars, and therefore become entangled in bundles of ideas, discourses, practices and materialities. These constitute different scaling propositions on which tourists and Cubans converge or diverge, and which inform the success of encounters within the tourism economy. Highlighted is the importance of understanding how scaling propositions are enacted and negotiated within tourism. I conclude that the realm of tourism is a particularly fruitful platform to investigate how competing scale-making projects and notions of scale are played out in the contemporary world.Tomando a escala (Tsing 2000 como objecto de análise, este artigo aborda a forma como emergem projectos concorrentes de configuração de escala a diferentes níveis da economia turística cubana. É examinada a interacção de turistas e cubanos no âmbito de cadeias de produção e distribuição controversas, e as formas como, assim, uns e outros se envolvem em conjuntos de ideias, discursos, práticas e materialidades. Estes constituem diferentes propostas de configuração de escala em que turistas e cubanos convergem ou divergem e que determinam o sucesso dos encontros no seio da economia turística. É aqui sublinhada a importância de compreendermos como as propostas de configuração de escala são apresentadas e negociadas no âmbito do turismo. Conclui-se que o campo do turismo constitui uma plataforma particularmente fértil para o estudo de como noções de escala e projectos de configuração de escala concorrentes se desenvolvem no mundo contemporâneo.

  9. Direct Detection of Oxygen Ligation to the Mn4Ca Cluster of Photosystem II by X-ray Emission Spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Pushkar, Yulia; Long, Xi; Glatzel, Pieter; Brudvig, Gary W.; Dismukes, G. Charles; Collins, Terrence J.; Yachandra, Vittal K.; Yano, Junko; Bergmann, Uwe

    2009-06-16

    Ligands play critical roles during the catalytic reactions in metalloproteins through bond formation/breaking, protonation/deprotonation, and electron/spin delocalization. While there are well-defined element-specific spectroscopic handles, such as X-ray spectroscopy and EPR, to follow the chemistry of metal catalytic sites in a large protein matrix, directly probing particular ligand atoms like C, N, and O is challenging due to their abundance in the protein. FTIR/Raman and ligand-sensitive EPR techniques such as ENDOR and ESEEM have been applied to study metal-ligand interactions. X-ray absorption spectroscopy (XAS) can also indirectly probe the ligand environment; its element-specificity allows us to focus only on the catalytic metal site, and EXAFS and XANES provide metal-ligand distances, coordination numbers, and symmetry of ligand environments. However, the information is limited, since one cannot distinguish among ligand elements with similar atomic number (i.e. C, N. and O). As an alternative and a more direct method to probe the specific metal-ligand chemistry in the protein matrix, we investigated the application of X-ray emission spectroscopy (XES). Using this technique we have identified the oxo-bridging ligands of the Mn{sub 4}Ca complex of photosystem II (PS II), a multisubunit membrane protein, that catalyzes the water oxidizing reaction. The catalytic mechanism has been studied intensively by Mn XAS. The fundamental question of this reaction, however, is how the water molecules are ligated to the Mn{sub 4}Ca cluster and how the O-O bond formation occurs before the evolution of O{sub 2}. This implies that it is necessary to follow the chemistry of the oxygen ligands in order to understand the mechanism.

  10. Abundance, distribution and size structure of Diadema antillarum (Echinodermata: Diadematidae in South Eastern Cuban coral reefs

    Directory of Open Access Journals (Sweden)

    F Martín Blanco

    2010-06-01

    Full Text Available The 1983-1984 mass mortality event of Diadema antillarum affected more than 93% of the total Caribbean population. Although there are no records about the status of Diadema populations before and after die-off on Cuban reefs, anecdotal information suggests that populations were struck. We analyzed spatial variation in the abundance and size structure of D. antillarum in 22 reefs sites in Jardines de la Reina, from June 2004 to September 2005. Counts of Diadema were performed in five 30x2m transects at each sampling site and sampling time, and test diameters were measured in September 2005 at the same fore reefs. Abundances were higher at reef crests (mean densities 0.08-2.18 ind./m², while reef slope populations reached a maximum site level of 0.13 ind./m² at only one site and showed values up to three orders of magnitude lower than those from reef crests. Highest abundance occurred at the west margin of major channels between keys where larval recruitment seems to be favored by local oceanographic features and facilitated by the abundance of Echinometra lucunter. The size frequency distribution of D. antillarum indicates that recruitment began to be noticeable three years before September 2005, suggesting these populations were depleted in the past and they are recovering now. Rev. Biol. Trop. 58 (2: 663-676. Epub 2010 June 02.La mortalidad de Diadema antillarum en 1983-1984 afectó más del 93% de la población del Caribe. Aunque no existen datos publicados sobre el estado de sus poblaciones en arrecifes cubanos antes y después de la mortalidad, se conoce anecdóticamente que fueron afectadas. En el presente trabajo se analizan las variaciones espaciales de la abundancia y estructura de tallas de D. antillarum en 22 arrecifes frontales en Jardines de la Reina, para lo cual se realizaron cinco recorridos de 30x2m en cada sitio entre Junio de 2004 y Septiembre de 2005. Las densidades de Diadema fueron mayores en las crestas arrecifales (0

  11. International Comparability of 131I, 201TI and 99mTc Activity Measurements performed in Cuban Nuclear Medicine

    International Nuclear Information System (INIS)

    Oropesa, P; Serra, R; Hernandez, A.T.; Varela, C

    2006-01-01

    This paper refers about the International Comparability of 131 I, 201 TI and 99m Tc Activity Measurements performed in Cuban Nuclear Medicine. Traceability of activity measurements in nuclear medicine based in two aspects: Comparability of clinic results and the safe and effective use of drugs. A bilateral international comparison for activity measurements CIEMAT CENTIS DMR was done. 2000-2004 National Program for 99m Tc 201 TI, 131 I vial and syringe measurements in radionuclide calibrators including a simulated test for activity administration. It is employed the Cause Effect Diagram for the activity measurement result of a source in the calibrator and the statistical methods for comparing several characteristics of the obtained data. The result of the comparisons demonstrates that the measurement quality has increased from one year to another

  12. Nivel de integración del Sistema Nacional de Salud Cubano Integration level of the Cuban Health National System

    Directory of Open Access Journals (Sweden)

    Pedro López Puig

    2011-12-01

    Full Text Available Introducción: En el Sistema Sanitario Cubano, la salud pública y la salud individual se integran bajo los principios de universalidad, gratuidad, accesibilidad, continuidad, responsabilidad e integralidad de la atención que se brinda a individuos, familias y comunidades. Objetivo: Identificar el nivel de integración del Sistema Sanitario Cubano en distintos niveles de complejidad en la gestión y prestación de servicios. Métodos: Se tuvieron en cuenta los atributos propuestos por la Organización Panamericana de la Salud en el 2008, para conformar redes integradas de servicios de salud. Se aplicó una escala cualitativa ordinal, propuesta por la Organización Panamericana de la Salud. Se aplicó un instrumento a 58 unidades de análisis, de estas 15 en el grupo I, considerado expertos; 13 en el II (directivos de nivel municipal y 30 en el III (directivos de nivel provincial. Se diseñó ad hoc un sistema de evaluación por índices para analizar los resultados. Resultados: Predominaron los atributos considerados integrados o parcialmente integrados. Los atributos de la integración, con mayores debilidades, fueron los relacionados con la integración del financiamiento presupuestado a las necesidades del sector y la integración de los procesos formativos del recurso humano en cantidad y calidad suficiente para las necesidades actuales, así como su comprometimiento con los servicios que prestan. El índice de integración por atributo y global, fueron similares para cada grupo, e indican una tendencia del Sistema de Salud Cubano hacia la integración. Conclusiones: El Sistema Sanitario Cubano tiende a la integración. Existen reservas de mejora en todos los atributos para la integración.Introduction: In the Cuban Health System, the public and individual health care integrated under the principles of universality, gratuitousness, accessibility, responsibility and completeness of the care offered to subjects, families and communities

  13. Economic feasibility study regarding the applicability of ultrasonic inspection of the Cuban sugar industry’s sugarcane mill shafts

    Directory of Open Access Journals (Sweden)

    Nelson Arzola de la Peña

    2006-05-01

    Full Text Available This article evaluates the economic feasibility of carrying out ultrasonic inspection of sugar-mill shafts. Four alternatives are considered, including the most frequently encountered scenarios. How and when inspections are carried out is analysed, periods between inspections being established by a fatigue-crack growth propagation approach. The lifecycle cost approach was applied for economic evaluation. Operation, maintenance and energy consumption costs were thus taken into consideration. The conclusion was drawn that it is highly advisable to use high performance ultrasonic inspection. Introducing ultrasonic inspection (according to the period of time obtained by fracture mechanics model could lead to a saving of half a million dollars per year for the Cuban sugarcane industry in the current conditions.

  14. From individual to herd protection with pneumococcal vaccines: the contribution of the Cuban pneumococcal conjugate vaccine implementation strategy

    Directory of Open Access Journals (Sweden)

    Nivaldo Linares-Pérez

    2017-07-01

    Full Text Available A new pneumococcal conjugate vaccine is currently undergoing advanced clinical evaluation prior to its planned introduction in Cuba. The implementation of the pneumococcal vaccination strategy has been designed with consideration of the need to maximize both its direct and indirect effects. A novel approach is suggested, which addresses preschool children as the first-line target group to generate herd immunity in infants and to have an impact on transmission at the community level. The clinical evaluation pipeline is described herein, including evaluations of effectiveness, cost-effectiveness, and impact. The scientific contribution of the Cuban strategy could support a paradigm shift from individual protection to a population effect based on a rigorous body of scientific evidence.

  15. Obtaining family consent for participation in Alzheimer's research in a Cuban-American population: strategies to overcome the barriers.

    Science.gov (United States)

    Williams, C L; Tappen, R; Buscemi, C; Rivera, R; Lezcano, J

    2001-01-01

    Cultural values and beliefs affect family attitudes toward participation in research. Significant resistance to allowing their elders with dementia to participate in clinical research was encountered in Cuban-American families. These families expressed concern about disturbing the elder's comfort (tranquilidad) and solitude (soledad). Furthermore, most believed that intervention would be futile. Feelings of guilt associated with nursing home placement may have been exacerbated by the suggestion that active intervention could be effective. Strategies to overcome these barriers included reduced emphasis on the potential superiority of the intervention to be tested, reassurance that contact with research staff was usually appreciated by participants, arrangements to talk with the family as a group about the study, and increased use of Spanish-language consent forms.

  16. From individual to herd protection with pneumococcal vaccines: the contribution of the Cuban pneumococcal conjugate vaccine implementation strategy.

    Science.gov (United States)

    Linares-Pérez, Nivaldo; Toledo-Romaní, María E; Santana-Mederos, Darielys; García-Fariñas, Anaí; García-Rivera, Dagmar; Valdés-Balbín, Yury; Vérez-Bencomo, Vicente

    2017-07-01

    A new pneumococcal conjugate vaccine is currently undergoing advanced clinical evaluation prior to its planned introduction in Cuba. The implementation of the pneumococcal vaccination strategy has been designed with consideration of the need to maximize both its direct and indirect effects. A novel approach is suggested, which addresses preschool children as the first-line target group to generate herd immunity in infants and to have an impact on transmission at the community level. The clinical evaluation pipeline is described herein, including evaluations of effectiveness, cost-effectiveness, and impact. The scientific contribution of the Cuban strategy could support a paradigm shift from individual protection to a population effect based on a rigorous body of scientific evidence. Copyright © 2017 The Author(s). Published by Elsevier Ltd.. All rights reserved.

  17. International double taxation

    OpenAIRE

    Odarčenko, Michal

    2015-01-01

    1 Summary This thesis deals with the issue of international double taxation of income and capital and methods for its solution. International double taxation is an issue which states began to deal with in the late 19th century. This interest intensified after the First World War when also the League of Nations (predecessor of the United Nations) began to deal with international double taxation. Most attention the phenomenon of double taxation of income and capital with an international elemen...

  18. Seismic and geological interpretation on petroleum exploration in the Cuban economic area in the Gulf of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Sora Monroy, America; Lopez, Sofia; Dominguez, Rene; Socorro, Rafael; Sanchez, Jorge; Toucet, Sonia [Cupet -Companhia Cubana de Petroleo, Havana (Cuba)

    2004-07-01

    From the decade of the 50'up to now, many seismic survey were acquired in the Cuban Economic area in the Gulf of Mexico, both, deep water and near short along the littoral, which have contribute to prepare the structural model as well the evolutional one. During the period comprise from June to December 2000, 7330 Km. of seismic lines were acquired over 70 lines in an area of 110000 square Km. that covers the Exclusive Economic area of Cuba. In this area the water depth varies from 500 m to 3500 m. The biggest depth is located at the central part of the whole area. The depth decreases toward the shell and the island's littoral (up to less than 1000 m). Seismic data were processed at CGG' processing in France. Geovector Plus was used as seismic processing software. All the information was calibrate by the wells in the area. The principal wells were DP535 and DP540. The general featuring of seismic image let us to get the map from the main geological elements in this area. In the area we were following two principal horizons: the green one associated to the Middle Cretaceous and the blue one associated to the top of Jurassic. We made the structural maps from the Middle Cretaceous and the Top of Jurassic, and did the seism stratigraphic analysis. We found 16 sequences. We did the chronograph table in this area and we made six maps from different seismic sequences. This analysis let us to define the most important area to continue studying in the Cuban economic area in the Gulf of Mexico on the petroleum exploration. (author)

  19. Anti-HBs in immunized children with cuban hepatitis B vaccine and impact of booster dose after five years

    International Nuclear Information System (INIS)

    Dahifar, H.; Mousavi, F.; Ghorbani, A.

    2008-01-01

    Hepatitis B virus infection and associated diseases are a major public health problem. This study was planned to find out the persistence of antibody against hepatitis B surface antigen in Iranian vaccinated children after five years. Anti-HBs titers in a group of healthy good - responder children who were vaccinated with Cuban hepatitis B vaccine in infancy were measured after five years. Children with antibody titers <100 mlU/ml were revaccinated and retested after four weeks. Mean anti-HBs titers in 68 children (29 females, 39 males) were 482.1 mlU/ml at six months after the third dose of primary vaccination and 153 mlU/ml at five years later. Total mean anti-HBs titers in 36 (52.9%) children out of 68 (17 females, 19 males) were 38.3 mlU/ml and 4(5.8%) of 68 children (two of each sexes) had no detectable antibody after five years. Total mean anti-HBs titers in these hypo- responder and non- responder were 774.3 mlU/ml and 625.5 mlU/ml respectively after booster dose. In a group of children, who were immunized with Cuban hepatitis B vaccine from birth, anti-HBS titers fell at 6.5 years of age and almost half of children became hypo responder or no responder and their anti-HBs titers developed secondary rise after booster vaccination. All children showed immunologic memory to a booster dose. (author)

  20. On the controversial fitting of susceptibility curves of ferromagnetic Cu(II) cubanes: insights from theoretical calculations.

    Science.gov (United States)

    Calzado, Carmen J

    2013-01-21

    This paper reports a theoretical analysis of the electronic structure and magnetic properties of a tetranuclear Cu(II) complex, [Cu(4) (HL)(4)], which has a 4+2 cubane-like structure (H(3) L=N,N'-(2-hydroxypropane-1,3-diyl)bis(acetylacetoneimine)). These theoretical calculations indicate a quintet (S=2) ground state; the energy-level distribution of the magnetic states confirm Heisenberg behaviour and correspond to an S(4) spin-spin interaction model. The dominant interaction is the ferromagnetic coupling between the pseudo-dimeric units (J(1) =22.2 cm(-1)), whilst a weak and ferromagnetic interaction is found within the pseudo-dimeric units (J(2) =1.4 cm(-1)). The amplitude and sign of these interactions are consistent with the structure and arrangement of the magnetic Cu 3d orbitals; they accurately simulate the thermal dependence of magnetic susceptibility, but do not agree with the reported J values (J(1) =38.4 cm(-1), J(2) =-18.0 cm(-1)) that result from the experimental fitting. This result is not an isolated case; many other polynuclear systems, in particular 4+2 Cu(II) cubanes, have been reported in which the fitted magnetic terms are not consistent with the geometrical features of the system. In this context, theoretical evaluation can be considered as a valuable tool in the interpretation of the macroscopic behaviour, thus providing clues for a rational and directed design of new materials with specific properties. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  1. The Cuban scorpion Rhopalurus junceus (Scorpiones, Buthidae): component variations in venom samples collected in different geographical areas.

    Science.gov (United States)

    Rodríguez-Ravelo, Rodolfo; Coronas, Fredy I V; Zamudio, Fernando Z; González-Morales, Lidia; López, Georgina Espinosa; Urquiola, Ariel Ruiz; Possani, Lourival D

    2013-05-20

    The venom of the Cuban scorpion Rhopalurus junceus is poorly study from the point of view of their components at molecular level and the functions associated. The purpose of this article was to conduct a proteomic analysis of venom components from scorpions collected in different geographical areas of the country. Venom from the blue scorpion, as it is called, was collected separately from specimens of five distinct Cuban towns (Moa, La Poa, Limonar, El Chote and Farallones) of the Nipe-Sagua-Baracoa mountain massif and fractionated by high performance liquid chromatography (HPLC); the molecular masses of each fraction were ascertained by mass spectrometry analysis. At least 153 different molecular mass components were identified among the five samples analyzed. Molecular masses varied from 466 to 19755 Da. Scorpion HPLC profiles differed among these different geographical locations and the predominant molecular masses of their components. The most evident differences are in the relative concentration of the venom components. The most abundant components presented molecular weights around 4 kDa, known to be K+-channel specific peptides, and 7 kDa, known to be Na+-channel specific peptides, but with small molecular weight differences. Approximately 30 peptides found in venom samples from the different geographical areas are identical, supporting the idea that they all probably belong to the same species, with some interpopulational variations. Differences were also found in the presence of phospholipase, found in venoms from the Poa area (molecular weights on the order of 14 to 19 kDa). The only ubiquitous enzyme identified in the venoms from all five localities studied (hyaluronidase) presented the same 45 kD molecular mass, identified by gel electrophoresis analysis. The venom of these scorpions from different geographical areas seem to be similar, and are rich in peptides that have of the same molecular masses of the peptides purified from other scorpions that

  2. Double Outlet Right Ventricle

    Science.gov (United States)

    ... Right Ventricle Menu Topics Topics FAQs Double Outlet Right Ventricle Double outlet right ventricle (DORV) is a rare form of congenital heart disease. Article Info En español Double outlet right ventricle (DORV) is a rare form of congenital ...

  3. Double layers in space

    International Nuclear Information System (INIS)

    Carlqvist, P.

    1982-01-01

    For more than a decade it has been realised that electrostatic double layers are likely to occur in space. The author briefly discusses the theoretical background of such double layers. Most of the paper is devoted to an account of the observational evidence for double layers in the ionosphere and magnetosphere of the Earth. Several different experiments are reviewed including rocket and satellite measurements and ground based observations. It is concluded that the observational evidence for double layers in space is very strong. The experimental results indicate that double layers with widely different properties may exist in space. (Auth.)

  4. Adoption and adaptation of the International Basic Safety Standards to Cuban reality; Adopcion y adaptacion de las normas basicas internacionales de seguridad a la realidad cubana

    Energy Technology Data Exchange (ETDEWEB)

    Quevedo Garcia, J.R.; Lopez Forteza, Y.; Sarabia Molina, I.; Alonso Gonzalez, I.; Guillen Campos, A. [Centro Nacional de Seguridad Nuclear, La Habana (Cuba)]. E-mail: regulacion@cnsn.cu

    2001-07-01

    The new Cuban regulatory document homologous to the 'International Basic Safety Standards for protection against ionizing radiation and for the safety of radiation sources' (IBSS) will be published in the near future. The document was accomplished on the basis of the IAEA Safety Series No 115 to which text it was performed the needed changes in order adapt it to the national reality in the field of protection and safety. The document is published with the consensus of the principal organizations and entities with specific responsibilities in relation to protection and safety as well as the consensus of the entities providing services in this field. The present paper presents and discusses the basic aspects included in the Cuban document that in one or another way should be considered as precision in reference to the IBSS. (author)

  5. Population size of Cuban Parrots Amazona leucocephala and Sandhill Cranes Grus canadensis and community involvement in their conservation in northern Isla de la Juventud, Cuba

    Science.gov (United States)

    Aguilera, X.G.; Alvarez, V.B.; Wiley, J.W.; Rosales, J.R.

    1999-01-01

    The Cuban Sandhill Crane Grus canadensis nesiotes and Cuban Parrot Amazona leucocephala palmarum are considered endangered species in Cuba and the Isla de la Juventud (formerly Isla de Pinos). Coincident with a public education campaign, a population survey for these species was conducted in the northern part of the Isla de la Juventud on 17 December 1995, from 06hoo to 10hoo. Residents from throughout the island participated, manning 98 stations, with 1-4 observers per station. Parrots were observed at 60 (61.2%) of the stations with a total of 1320, maximum (without correction for duplicate observations), and 1100, minimum (corrected), individuals counted. Sandhill cranes were sighted at 38 (38.8%) of the stations, with a total of 115 individuals. Cranes and parrots co-occurred at 20 (20.4%) of the stations.

  6. Examining the influence of family environments on youth violence: a comparison of Mexican, Puerto Rican, Cuban, non-Latino Black, and non-Latino White adolescents.

    Science.gov (United States)

    Estrada-Martínez, Lorena M; Padilla, Mark B; Caldwell, Cleopatra Howard; Schulz, Amy Jo

    2011-08-01

    Existing research rarely considers important ethnic subgroup variations in violent behaviors among Latino youth. Thus, their risk for severe violent behaviors is not well understood in light of the immense ethnic and generational diversity of the Latino population in the United States. Grounded in social control theory and cultural analyses of familism, we examine differences in the risk for severe youth violence, as well its associations with family cohesion, parental engagement, adolescent autonomy, household composition, and immigrant generation among Mexican (n = 1,594), Puerto Rican (n = 586), Cuban (n = 488), and non-Latino Black (n = 4,053), and White (n = 9,921) adolescents with data from the National Longitudinal Study of Adolescent Health. Results indicate a gradient of risk; White youth had the lowest risk for severe violence and Puerto Rican youth had the highest risk compared to all other racial/ethnic subgroups. Within-group analysis indicates that family factors are not universally protective or risk-inducing. While family cohesion decreased the risk of severe violence among all groups, parental engagement was associated with increased risk among Blacks and Whites, and adolescent autonomy was associated with increased risk among Puerto Ricans and Cubans. In addition, Cuban and White adolescents who lived in single parent households or who did not live with their parents, had higher risk for severe violent behaviors than their counterparts who lived in two parent households. Among Latinos, the association of immigrant generation was in opposite directions among Mexicans and Cubans. We conclude that family and immigration factors differentially influence risk for violence among Latino subgroups and highlight the significance of examining subgroup differences and developing intervention strategies that are tailored to the needs of each ethnic subgroup.

  7. Nitrogen Fertilization for Optimizing the Quality and Yield of Shade Grown Cuban Cigar Tobacco: Required Nitrogen Amounts, Application Schedules, Adequate Leaf Nitrogen Levels, and Early Season Diagnostic Tests

    Directory of Open Access Journals (Sweden)

    Borges A

    2014-12-01

    Full Text Available Nitrogen (N fertilizers have a decisive influence on the yield and quality of tobacco. Yield, percentage of plant N, wrapper leaf quality, and nicotine content are all important quality characteristics in tobacco growing. This work is an attempt to provide a tool for optimizing mineral N nutrition for Cuban cigar tobacco, using a strategy that links N supply with leaf N concentration and wrapper yield. Similar approaches developed worldwide have mainly involved Virginia and Burley tobacco types but not Cuban cigar tobacco. The objective of the current work is to identify the effects of fertilizer N levels and timing of application on each of the mentioned quality factors for shade grown Cuban cigar tobacco. Another purpose is to explore the usefulness of a quick method of assessing the N status of plants based on measuring leaf transmission at two different wavelengths (650 and 940 nm. The experiments were done in the main tobacco growing area of Cuba (Vueltabajo. In each experiment, nine separate treatments were used covering different levels and times of fertilizer N application. The same experiment was carried out in three different years (2005-2006, 2006-2007, 2007-2008 but as the results were similar only one set of data is described (2006-2007. The patterns of response to N fertilizer of all four quality measurements, including yield and wrapper leaf quality, were similar in the different replications of the experiments. The optimal fertilizer level was 140-190 kg N/ha (40% applied on days 8-10 after transplanting and 60% on days 18-20 after transplanting. The optimal N concentration of leaves taken at the central foliar level of the middle stalk position was 4.3-4.7% at harvest time. Leaf transmission measurements by means of the SPAD-502 Chlorophyll Meter in the early stages of growth were correlated with leaf chlorophyll and N concentration and provide an excellent guide for predicting Cuban cigar tobacco wrapper leaf yield.

  8. Use of neuronal networks in the modeling of the doses that receives the Cuban population by potassium-40 contained in their organism

    International Nuclear Information System (INIS)

    Zerquera, Juan Tomas; Prendes Alonso, Miguel; Lopez Bejerano, Gladys M.; Acosta Rodriguez, Nancy

    2001-01-01

    The potassium 40 constitutes the main source natural present in the organism that influences in the effective dose that people receive. With the objective of evaluating the contribution from this component to the doses received by the Cuban population, a study was developed in order to evaluate the doses for this cause. A representative sample was selected based on the distribution of Cuban population by sex and ages. The measurements were carried out in the Whole Body Counter of the Center for Radiation Protection and Hygiene. For the estimate of the doses an uniform distribution of potassium was assumed in the whole body and the methodology was used recommended by the ICRP. The values of annual effective dose varies between 93 and 209 mSv for the feminine sex and 102 and 212 mSv for the masculine sex. With the obtained values they were the adjustment coefficients for the functions dose-age for each one of the sexes. At the same time it was possible to model the estimate of the doses by means of a neural network that, trained with the obtained experimental data, it allows to estimate the due doses directly to the potassium 40 starting from the sex data, age, height and corporal weight. The effective dose mediates yearly for the public's members it was estimated in 149 ± 6 mSv, starting from the experimental data and the Cuban population's specific characteristics. (author)

  9. Disability-adjusted life years for breast and reproductive system cancers in Cuban women of child bearing age.

    Science.gov (United States)

    Domínguez, Emma; Santana, Felipe; Seuc, Armando H

    2014-01-01

    INTRODUCTION Disability-adjusted life years is a composite measure that integrates the components of mortality and morbidity. It is a useful indicator of overall disease burden and is particularly useful for evaluating health intervention outcomes. In the cases of breast and reproductive system cancers, these can also negatively affect childbearing opportunities for young women. OBJECTIVE Determine disability-adjusted life years for breast and reproductive system cancers in Cuban women aged 15-44 years during the period 1990-2006. METHODS A national epidemiological study was conducted using Cuba's disease and vital statistics registry data for 1990, 1995, 2000 and 2006. Disability-adjusted life years in women aged 15-44 years were calculated for breast cancer and three female reproductive system cancers (cervical, endometrial and ovarian), by summing years of life lost due to premature mortality and years lived with disability. Years of life lost due to premature mortality were determined based on age-specific estimates of life expectancy. Years lived with disability were calculated as the product of severities (provided by the 1990 Global Burden of Disease study) and incidence and average duration, both obtained via the DISMOD II program. Data entered in the program include national statistics on incidence, prevalence, and mortality. RESULTS Breast cancer and cervical cancer proved to have the highest rates of potential years of life lost due to premature mortality, with the sharpest increases in the period (from 139 to 206.5 and 114.7 to 215.2 per 100,000, respectively). Endometrial and ovarian neoplasms crept up more slowly. An increase in years lived with disability was seen in three of these four types of cancer; only cervical cancer saw a decline (from 12.7 to 9 per 100,000). Breast cancer and cervical cancer presented the highest levels of disability-adjusted life years for all four years studied, rising from 146.9 to 227.8 and 127.4 to 224.2 per 100

  10. Policy and strategy of the Cuban Regulatory Organization for the establishment of the legal and regulation frame

    International Nuclear Information System (INIS)

    Arnau F, A.; Alonso G, I.; Sarabia M, I.

    2006-01-01

    The National Center of Nuclear Security, Cuban entity authorized to exercise the regulation functions and control of the security of the use of the nuclear energy and the accounting and control of the nuclear materials, has among its functions, to elaborate and to propose for its approval to the corresponding instances, the juridical, technical dispositions and of procedure in its competition sphere, what demands that in this sense clear guidelines exist to carry out this social mission. The fact of assuming this function demands the necessity of a Politics for the establishment of the legal and regulation frame that expresses in a coherent way the general lines on those that it behaves the elaboration of the standards that govern this activity, to reach the end in an efficient and effective way and consequently the adoption of a Strategy that frames the necessary actions that assure the one execution and development of the politics and the pursuit of the precise rules for an optimal result. The Politics for the establishment of the legal and regulation frame of the National Center of Nuclear Security is based on a group of general principles that mark the guidelines so that this activity is chord to the national juridical system, to the good ones international practices and the recommendations of the International Atomic Energy Agency appropriated to the national experience and the daily reality, being this a transparent and reconciled process in such a way that the addressee of these standards can contribute their recommendations to the ends of achieving an effective applicability of the legal and regulation frame that governs this activity in the country. The development and pursuit of these principles is sustained in a group of actions to the help of the strategy for the establishment of the legal and regulation frame, embracing the actions so much during the process of elaboration of the legal frame, its systematic revision, the publication and distribution

  11. Double deflation and aggregation

    NARCIS (Netherlands)

    Dietzenbacher, Erik; Hoen, A.R.

    Published input-output tables in constant prices are relatively scarce. Therefore, input-output tables often have to be deflated by the practitioners themselves. The method of double deflation is used predominantly for this purpose. The present paper shows that the double-deflation method is subject

  12. Double layer formation

    International Nuclear Information System (INIS)

    Singh, N.

    1982-01-01

    Results from several numerical simulations of the formation of double layers in plasmas with a constant potential drop across them are presented. Here the emphasis is mainly on plasma processes during the formation of double layers. The recurring formation of double layers, their propagation and associated current interruptions are observed when the electron current injected into the simulation region from the low potential side exceeds the electron thermal current. This recurring process is stopped (or delayed) when the electron current recuperation is inhibited by a small magnetic force on the electrons. The motion of double layers is examined and it is found that the motion is caused by the interruption of the ion current from the high potential side. The subsequent recovery of this current renders the double layer stationary. (author)

  13. Analysis of the experience of Cuban physicians in a Brazilian metropolis in accordance with the Paideia Method.

    Science.gov (United States)

    Terra, Lilian Soares Vidal; Borges, Fabiano Tonaco; Lidola, Maria; Hernández, Silvia S; Millán, Juan Ignacio Martínez; Campos, Gastão Wagner de Sousa

    2016-09-01

    We had hoped that the Mais Médicos Program (More Doctors Program) would have generated several changes and reflections in each municipality in which it was deployed. In order to observe those changes, we sought to analyze the experience of Cuban physicians in the Mais Médicos program from an actor-centered perspective, based on the Paideia Method - an approach that seeks to enhance the ability of the subjects to analyze and intervene in their practice. We performed semi-structured interviews to analyze our research object that consisted in the experience of those actors included professionally in the Mais Médicos program in a metropolis with unique characteristics. In order to assess the interviews, we applied Content Analysis followed by Thematic Analysis. From the discourse of the actors, of which illustrative excerpts are transcribed in this article, we can affirm that the program's potential surpassed any initial barriers, presenting itself as fine-tuning instrument for replacing the biomedical model in line with the Paideia Method.

  14. Germination of somatic embryos of Psidium guajava L. cv. Cuban Red Dwarf EEA 18-40 in temporary immersion systems

    Directory of Open Access Journals (Sweden)

    Jorge Vilchez Perozo

    2001-04-01

    Full Text Available Somatic embryo germination of Psidium guajava L. cv. Cuban Red Dwarf EEA 18-40 in temporary immersion systems (TIS, in which somatic embryos were cultured in the heart-torpedo stage in MS mediun at mayor half strength salt and suplemented with: 0.25 mg.l-1 of 6-bencilaminopurine (6-BAP, 10 mg.l-1 of Biobras-6 (analogous of brasinoesteriode and 20 g.l-1 of sucrose. As control was used solid cultivation medium (2.5 g.l-1 Gellan gum, Spectrum® of same composition to the one used in the TIS. The variables germination percentage and fresh weight were evaluated statistically. After ten weeks of cultivation the largest values in germination percentage (91.04% and fresh weight (1.22 g were obtained in the TIS, being statistically different to those obtained in solid medium (9.79% and 1.03 g, respectively. Key words: in vitro plant, guayaba, regeneration, RITA®,somatic embryogenesis

  15. Natural history and morphometry of the Cuban iguana (Cyclura nubila Gray, 1831 in Cayo Sijú, Cuba

    Directory of Open Access Journals (Sweden)

    Beovides-Casas, K.

    2006-06-01

    Full Text Available The report presents data about the Cuban iguana population (Cyclura nubila nubila inhabiting Cayo Sijú, an 88 ha island off the southwest coast of Cuba. Population densities estimated using strip transects were higher in xerophytic coastal scrub (6.72 ± 6.25 iguanas/ha than in typical sand vegetation (3.63 ± 2.71 iguanas/ha and mangrove forests (2.9 ± 2.9 iguanas/ha. The total population for the cay was estimated at 350 individuals with an adult biomass of approximately 11.67 kg/ha. Densities varied minimally between three habitat types and between the wet and dry seasons. No significant density fluctuations were found one month after Hurricane Ivan affected the cay. Iguana burrows were encountered most frequently in beach dunes. Analysis of 30 scat samples revealed eight species of plants, with the fruits of Chrysobalanum icaco and the leaves of Batis maritima being the most frequently identified items. The remains of crab (Cardisoma guandhumi and insects of the order Hemiptera were also present in scat samples. Sexual dimorphism was evident in this population, with males being significantly larger in eight morphological variables. The snout-vent length measurements were larger in this population than in those reported in two cays off the south coast of Cuba.

  16. Bufadienolides from parotoid gland secretions of Cuban toad Peltophryne fustiger (Bufonidae): Inhibition of human kidney Na(+)/K(+)-ATPase activity.

    Science.gov (United States)

    Perera Córdova, Wilmer H; Leitão, Suzana Guimarães; Cunha-Filho, Geraldino; Bosch, Roberto Alonso; Alonso, Isel Pascual; Pereda-Miranda, Rogelio; Gervou, Rodrigo; Touza, Natália Araújo; Quintas, Luis Eduardo M; Noël, François

    2016-02-01

    Parotoid gland secretions of toad species are a vast reservoir of bioactive molecules with a wide range of biological properties. Herein, for the first time, it is described the isolation by preparative reversed-phase HPLC and the structure elucidation by NMR spectroscopy and/or mass spectrometry of nine major bufadienolides from parotoid gland secretions of the Cuban endemic toad Peltophryne fustiger: ψ-bufarenogin, gamabufotalin, bufarenogin, arenobufagin, 3-(N-suberoylargininyl) marinobufagin, bufotalinin, telocinobufagin, marinobufagin and bufalin. In addition, the secretion was analyzed by UPLC-MS/MS which also allowed the identification of azelayl arginine. The effect of arenobufagin, bufalin and ψ-bufarenogin on Na(+)/K(+)-ATPase activity in a human kidney preparation was evaluated. These bufadienolides fully inhibited the Na(+)/K(+)-ATPase in a concentration-dependent manner, although arenobufagin (IC50 = 28.3 nM) and bufalin (IC50 = 28.7 nM) were 100 times more potent than ψ-bufarenogin (IC50 = 3020 nM). These results provided evidence about the importance of the hydroxylation at position C-14 in the bufadienolide skeleton for the inhibitory activity on the Na(+)/K(+)-ATPase. Published by Elsevier Ltd.

  17. Neutrinoless double beta decay

    Indian Academy of Sciences (India)

    Abstract. The physics potential of neutrinoless double beta decay is discussed. Furthermore, experimental considerations as well as the current status of experiments are presented. Finally, an outlook towards the future, work on nuclear matrix elements and alternative processes is given.

  18. Reflection Positive Doubles

    OpenAIRE

    Jaffe, Arthur; Janssens, Bas

    2016-01-01

    Here we introduce reflection positive doubles, a general framework for reflection positivity, covering a wide variety of systems in statistical physics and quantum field theory. These systems may be bosonic, fermionic, or parafermionic in nature. Within the framework of reflection positive doubles, we give necessary and sufficient conditions for reflection positivity. We use a reflection-invariant cone to implement our construction. Our characterization allows for a direct interpretation in t...

  19. A double layer review

    International Nuclear Information System (INIS)

    Block, L.P.

    1977-06-01

    A review of the main results on electrostatic double layers (sometimes called space charge layers or sheaths) obtained from theory, and laboratory and space experiments up to the spring of 1977 is given. By means of barium jets and satellite probes, double layers have now been found at the altitudes, earlier predicted theoretically. The general potential distribution above the auroral zone, suggested by inverted V-events and electric field reversals, is corroborated. (author)

  20. Adsorption phenomena of cubane-type tetranuclear Ni(II) complexes with neutral, thioether-functionalized ligands on Au(111)

    Science.gov (United States)

    Heß, Volkmar; Matthes, Frank; Bürgler, Daniel E.; Monakhov, Kirill Yu.; Besson, Claire; Kögerler, Paul; Ghisolfi, Alessio; Braunstein, Pierre; Schneider, Claus M.

    2015-11-01

    The controlled and intact deposition of molecules with specific properties onto surfaces is an emergent field impacting a wide range of applications including catalysis, molecular electronics, and quantum information processing. One strategy is to introduce grafting groups functionalized to anchor to a specific surface. While thiols and disulfides have proven to be quite effective in combination with gold surfaces, other S-containing groups have received much less attention. Here, we investigate the surface anchoring and organizing capabilities of novel charge-neutral heterocyclic thioether groups as ligands of polynuclear nickel(II) complexes. We report on the deposition of a cubane-type {Ni4} (= [Ni(μ3-Cl)Cl(HL·S)]4) single-molecule magnet from dichloromethane solution on a Au(111) surface, investigated by scanning tunneling microscopy, X-ray photoelectron spectroscopy, and low-energy electron diffraction, both immediately after deposition and after subsequent post-annealing. The results provide strong evidence for partial decomposition of the coordination complex upon deposition on the Au(111) surface that, however, leaves the magnetic {Ni4Cl4n} (n = 1 or 2) core intact. Only post-annealing above 480 K induces further decomposition and fragmentation of the {Ni4Cl4n} core. The detailed insight into the chemisorption-induced decomposition pathway not only provides guidelines for the deposition of thioether-functionalized Ni(II) complexes on metallic surfaces but also reveals opportunities to use multidentate organic ligands decorated with thioether groups as transporters for highly unstable inorganic structures onto conducting surfaces, where they are stabilized retaining appealing electronic and magnetic properties.

  1. Diet of the invasive Cuban treefrog (Osteopilus septentrionalis) in pine rockland and mangrove habitats in South Florida

    Science.gov (United States)

    Glorioso, B.M.; Waddle, J.H.; Crockett, M.E.; Rice, K.G.; Percival, H.F.

    2012-01-01

    Native to Cuba, the Bahamas and the Cayman Islands, the Cuban Treefrog (CTF) is an invasive species in Florida, with the ability to inflict serious ecological damage to invaded habitats. By examining the diet of the CTF, a known predator of native frogs, better predictions may be made of the impacts on native species and ecosystems. From 2002 - 2003, CTF diet was investigated in south Florida at four sites, two each within pine rockland and mangrove habitat. Within each habitat, one site exhibited a low density of CTFs and the other a high density of CTFs. CTFs were captured in PVC pipes attached to trees and stomach contents were examined after euthanasia. Beetles were the most numerous and widely consumed prey item among sites; roaches, orthopterans, spiders, ants, and caterpillars were also major dietary components. There were significant differences in the proportion of taxa consumed by CTFs between low and high density populations within each habitat, with the low density site in every instance having the higher proportion. Across habitats, ants comprised a significantly higher proportion of the diet in mangroves, whereas beetles, orthopterans, and snails comprised a significantly higher proportion of the diet in pine rocklands. Approximately 3.5% of all stomachs examined contained anuran remains. Though not significant, CTFs from low density sites consumed a higher proportion of frogs than those at high density sites. Corroborating previous research, the data show the CTF to be a generalist feeder, consuming a wide variety of invertebrate prey, with anurans playing only a minor role in the overall diet.

  2. Cuban typical doses for 99mTc-DMSA renal gammagraphy studies: a methodology for the establishment of reference levels

    International Nuclear Information System (INIS)

    Diaz Barreto, M.; Varela Corona, C.; Lopez Bejerano, G.M.; Perea Diaz, M.; Paz Viera, J.E.

    2008-01-01

    Since a handful of years ago, international rules on Radiological Protection include the principle of optimization of given dose to patients, if this procedure doesn't lessen diagnosis quality, and the establishment of reference levels of activity. For these reasons, the Radiological Protection staff of Cuban Institute of Nephrology's Nuclear Medicine Service, where morpho functional renal studies are carried out, 70% on infants and young children, started a research on that way. Thus, because their biggest incidence, 99m Tc -DMSA renal gammagraphy studies were chosen, using a General Electric 400 AT Planar Gamma Camera. Studied sample was randomly selected, including adults (12 peoples) and children (23); divided into 4 groups, lessen given dose step by step. Other items were kept in mind in the research, such age, weight, time delayed between administrations and image getting, getting time of each view and total time of the study, as well as radiopharmaceuticals quality and Gamma Camera performance. Image quality was evaluated for each case, using both, objective and subjective criteria. Objective evaluation was done by using contrast/noise ratios and variance of the random noise. They were used to develop clustering and discriminant analysis over the independent variables to detect groups with differentiated image quality from the physical and mathematical point of view. Subjective evaluation was performed using the criteria of two expert observers who had no information about the activity levels used. They evaluated image quality separately, giving a good, regular or bad evaluation for each image. As a conclusion, we found that it is possible to reduce the given activities in 50% and thus, indirectly, to reduce doses for workers and for the public. Additionally, we propose a methodology for the establishment of reference levels for 99m Tc -DMSA renal gammagraphy studies in Cuba, both, for adults and paediatric patients. (author)

  3. The elementary concentration and the behavior of the iron in Cuban agricultural soils by means of the Neutron activation Analysis and Moessbauer Spectroscopy

    International Nuclear Information System (INIS)

    Furet, N. R.; Oddone, M.; Orihuela, D.L.

    1999-01-01

    Representative samples from Cuban agricultural soils, which have been benefited with industrial waste are studied by means of the methods of the Analysis for Instrumental Neutronic Activation and Moessbauer Spectroscopy. The elemental contents of Na, K, Ca, Fe, Cr, etc. are determined, and the influence of the industrial waste in the elemental concentrations is valued. The behavior of the iron is studied, like one of the important elements in several processes of development of the plants. The oxidation and coordination states of the Fe in soils are studied

  4. Fundamentación Científica de la Psiquiatría Cubana Actual Current Cuban Psychiatry: Its scientific foundation

    Directory of Open Access Journals (Sweden)

    Liuba Y Peña Galbán

    2007-08-01

    Full Text Available Se realiza un análisis metodológico conceptual de la Psiquiatría como ciencia partiendo de los criterios de los psiquiatras cubanos, coincidiendo en que es una rama de las Ciencias Médicas, en la cual el objeto de estudio es la enfermedad mental o el proceso salud enfermedad mental y sus acciones es el diagnóstico, tratamiento, etiopatogenia, rehabilitación y prevención de las mismas, así como su estudio epidemiológico y que incluye el carácter social e interdisciplinario. A partir de la reorientación de la Psiquiatría hacia la comunidad se hace una reflexión del significado e implicaciones de la misma. Se argumenta como en Cuba se aplica el Modelo de la Atención Comunitaria de Salud Mental a través de los Centros comunitarios de Salud Mental que constituyen la piedra angular del modelo cubano de atención comunitaria, con los que constituye la Psiquiatría comunitaria el nuevo paradigma de la Psiquiatría cubana actual. Se reconoce que el fundamento filosófico que sustenta a la Psiquiatría cubana actual es la teoría Marxista LeninistaA conceptual and methodological analysis of Psychiatry as a science is made, taking the Cuban psychiatrists' criteria as a starting point, referring to it as a branch of the Medical Sciences, in which the object of study is the mental illness or the process health-mental illness, being its actions the diagnosis, treatment, ethiology and pathogenesis, rehabilitation and prevention, as well as its epidemiological study that is related to the social and interdisciplinary levels. Starting with redirecting Psychiatry towards the community, a reflection is made of the meaning and implications of this science. It is documented the application of the Community Mental Health Attention Model that is applied through the community Centers of Mental Health, which constitute the cornerstone of the Cuban model of community attention. Thus, community Psychiatry represents the new paradigm of current Cuban

  5. El enfoque epidemiologico del sistema de salud de Cuba The epidemiologic approach of the Cuban health system

    Directory of Open Access Journals (Sweden)

    Silvia Martínez Calvo

    1999-08-01

    mensurar la distancia entre lo ideal y lo real. En conclusión, se reconoce cierto vacío entre la argumentación teórica y la práctica epidemiológica en el Sistema Nacional de Salud, aunque sean inobjetables los avances en el ámbito sanitario en estas casi cuatro décadas. Resulta ineludible el desafío que esto representa para alcanzar el liderazgo epidemiológico que en el discurso se promueve, para lo cual la reforma del sector salud emerge como un excelente y oportuno espacio.The international recognition of the achievements of the Cuban health system, the stability -questioned on some occasions - of health indicators, and the enormous human resources and materials invested to develop the policies and national sanitary strategies comprise an excellent field to analyze the epidemiological contribution to those positive results in the health area. Among those outstanding results, the longer life expectancy, the low mortality rates, infant mortality, and mortality due to infectious and parasitic diseases partly due to the elimination or eradication of a group of diseases preventable by immunization. Were these results reached by an epidemiologically oriented health system? Do the procedures carried out allow for the proposal of a Cuban School of Epidemiology? The objective of this paper is to offer answers to these queries through a critical appraisal on the presumable epidemiological orientation of the health system, and the incorporation of epidemiological thinking in the sanitary strategies that have been designed and developed in Cuba. An arbitrary, but notorious dichotomy, the Seminar on the "Uses and Perspectives of Epidemiology", held in Buenos Aires in 1983, has traced rules for the epidemiological performance in the Region as a whole and contributed to the analysis above. The dichotomy -before and after the Seminar - created the national scenarios for practicing epidemiology at the academic, investigative and health services levels, supported on 4 basic

  6. Study of external exposure doses received by Cuban population due to terrestrial component of the environmental radiation sources; Estudio de las dosis por exposicion externa que recibe la poblacion cubana debidas a la componente terrestre de la radiacion ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Zerquera, Juan Tomas; Prendes Alonso, Miguel [Centro de Proteccion y Higiene de las Radiaciones, La Habana (Cuba); Brigido Flores, Osvaldo [Laboratorio de Vigilancia Radiologica Ambiental de Camaguey (Cuba); Hernandez Perez, Alberto [Laboratorio de Vigilancia Radiologica Ambiental de Oriente, Holguin (Cuba)

    2001-07-01

    The work presents the results of the study carried out to evaluate the doses that the Cuban population receives for the external exposition to the terrestrial component of the environmental sources of radiation. Starting from the carried out measurements it was possible to estimate the doses effective representative annual stockings that the Cuban population receives for external exposition to the terrestrial radiation, considering the permanency in indoors and outdoors. The dose received due to this component was 180{+-}14 mSv/year. These values are in the range of those reported internationally. (author)

  7. Project Half Double

    DEFF Research Database (Denmark)

    Svejvig, Per; Ehlers, Michael; Adland, Karoline Thorp

    and as an opportunity rather than a threat and a risk. We are convinced that by doing so, we can strengthen Denmark’s competitiveness and play an important role in the battle for jobs and future welfare. The overall goal is to deliver “projects in half the time with double the impact”, where projects in half the time...... many of the key performance indicators associated with them can be evaluated (Grundfos and Siemens Wind Power). In addition to the current status of delivering impact faster for the seven pilot projects, it is important to highlight that Project Half Double phase 1 has planted many seeds in the pilot......Project Half Double has a clear mission to succeed in finding a project methodology that can increase the success rate of our projects while increasing the speed at which we generate new ideas and develop new products and services. Chaos and complexity should be seen as a basic condition...

  8. Double Chooz experiment

    International Nuclear Information System (INIS)

    Palomares, C.

    2009-01-01

    Double Chooz will use two identical detectors at different distances from the Chooz nuclear power station to search for a non-vanishing value of θ 13 , and, hopefully, to open the way to experiments aspiring to discover CP violation in the leptonic sector. The far detector is expected to be operative by the end of 2009. Installation of the near detector will occur in 2010. Double Chooz has the capacity to exclude sin 2 (2θ 13 ) 31 2 = 2.5 x 10 -3 eV 2 with three years of data running both near and far detectors. (author)

  9. John Deakin: Double Exposures

    Directory of Open Access Journals (Sweden)

    Paul Rousseau

    2015-11-01

    Full Text Available In this series of short films made by Jonathan Law, the art historian James Boaden, and the curator of The John Deakin Archive, Paul Rousseau, discuss the double-exposure images made by the photographer John Deakin (1912-1972 in the 1950s and 1960s. The films ask you, firstly, to look closely at the images being discussed. Each one begins with a sustained and intense shot of a single image before opening up to a wide-ranging discussion about Deakin, double exposures, and photography.

  10. La mujer como sujeto social ante el problema ambiental desde la realidad cubana./The woman as a social subject to the environmental problem from the Cuban reality.

    Directory of Open Access Journals (Sweden)

    Luisa Carrión Cabrera

    2015-09-01

    Full Text Available RESUMEN El análisis de la mujer como sujeto social ante el problema ambiental en el contexto cubano, se convierte en una necesidad para alcanzar el desarrollo sostenible, para dicho análisis se discuten acerca de los cuatro ejes que facilitan la valoración de los procesos sociales en su vínculo con el medio ambiente (lo ambiental como problemática en la producción filosófica en el contexto cubano y su relación con la mujer como sujeto social; el desequilibrio en las condiciones de existencia en los espacios privados (familiar; los problemas ambientales y su impacto en la mujer y el papel creciente de la actividad social del sujeto, a partir de sus tipos y proyecciones sociales para el logro del desarrollo sostenible. ABSTRACT The analysis of women as social subject to the environmental problem in the Cuban context, it becomes a necessity for sustainable development, for this analysis are discussed on the four axes that facilitate the assessment of social processes in its link with the environment (environmental and philosophical problems in production in the Cuban context and its relationship with the woman as a social subject, the imbalance in living conditions in the private sphere (family environmental problems and their impact on women and the increasing role of the social activity of the subject, based on their types and social implications for the achievement of sustainable development.

  11. Vitamin A values of wild-caught Cuban tree frogs (Osteopilus septentrionalis) and marine toads (Rhinella marina) in whole body, liver, and serum.

    Science.gov (United States)

    Sullivan, Kathleen E; Fleming, Greg; Terrell, Scott; Smith, Dustin; Ridgley, Frank; Valdes, Eduardo V

    2014-12-01

    Recent issues surrounding captive amphibians are often nutritionally related problems, such as hypovitaminosis A. Although supplementation of frogs with vitamin A is a topic of investigation, the underlying issue is understanding vitamin A metabolism in amphibian species. To develop a range of "normal" vitamin A concentrations for captive amphibians, baseline vitamin A concentrations must be established in wild amphibian species. In this study, two species, Cuban tree frogs (Osteopilus septentrionalis; n = 59) and marine toads (Rhinella marina; n = 20) were collected from the wild as part of an invasive species control program at Zoo Miami, Miami, Florida. Serum, liver, and whole body samples were analyzed for vitamin A content. The Cuban tree frogs showed higher concentrations on average of vitamin A in serum (82.8 ppb), liver (248.3 IU/g), and whole body (5474.7 IU/kg) samples compared with marine toads (60.1 ppb; 105.3 IU/g; 940.7 IU/kg, respectively), but differences were not significant (P = 0.22). What can be considered "normal" values of vitamin A concentrations across different amphibian species requires further investigation. Although all amphibians collected in this study appeared healthy, a larger sample size of animals, with known health histories and diets, may provide stronger evidence of normal expectations.

  12. Layered double hydroxides

    DEFF Research Database (Denmark)

    López Rayo, Sandra; Imran, Ahmad; Hansen, Hans Chr. Bruun

    2017-01-01

    A novel zinc (Zn) fertilizer concept based on Zn doped layered double hydroxides (Zn-doped Mg-Fe-LDHs) has been investigated. Zn-doped Mg-Fe-LDHs were synthetized, their chemical composition was analyzed and their nutrient release was studied in buffered solutions with different pH values. Uptake...

  13. Beyond the double banana

    DEFF Research Database (Denmark)

    Rosenzweig, Ivana; Fogarasi, András; Johnsen, Birger

    2014-01-01

    performance was compared with the double banana (longitudinal bipolar montage, 10-20 array). RESULTS: Adding the inferior temporal electrode chain, computed montages (reference free, common average, and source derivation), and voltage maps significantly increased the sensitivity. Phase maps had the highest...

  14. Double aortic arch

    Science.gov (United States)

    Surgery can be done to fix double aortic arch. The surgeon ties off the smaller branch and separates it from the larger branch. Then the surgeon closes the ends of the aorta with stitches. This relieves pressure on the esophagus and windpipe.

  15. Aristotle and Double Effect

    DEFF Research Database (Denmark)

    Di Nucci, Ezio

    2014-01-01

    cases from the literature on double effect such as, amongst others, strategic bombing, the trolley problem, and craniotomy. I find that, despite some common features such as the dilemmatic structure and the inevitability of a bad effect, Aristotle’s mixed actions do not count as cases justifiable...

  16. Nuclear double beta decay

    International Nuclear Information System (INIS)

    Hubert, P.; Mennrath, P.

    1985-01-01

    The processes of double beta decay with and without emission of neutrinos are briefly reviewed. After the definitions of the processes and implications for the neutrino properties, the present status of the experimental results is discussed. We conclude with a description of the Bordeaux-Zaragoza-Strasbourg experimental which will run in the Frejus tunnel

  17. Design for Double Rainbow

    Science.gov (United States)

    Thomas, Lisa Carlucci

    2011-01-01

    Rare is the inspirational, spontaneous, transformative moment shared among 20 million people. In the summer of 2010, people around the world were moved by the sighting of a double rainbow--almost a triple rainbow--"all the way across the sky" in Yosemite National Park. Caught on video and posted to by YouTube by Paul Vasquez in January 2010, the…

  18. Aristotle and Double Effect

    DEFF Research Database (Denmark)

    Di Nucci, Ezio

    2014-01-01

    There are some interesting similarities between Aristotle’s ‘mixed actions’ in Book III of the Nicomachean Ethics and the actions often thought to be justifiable with the Doctrine of Double Effect. Here I analyse these similarities by comparing Aristotle’s examples of mixed actions with standard ...

  19. La terapia láser de baja potencia en la medicina cubana Low potency laser therapy in Cuban medicine

    Directory of Open Access Journals (Sweden)

    Adel Hernández Díaz

    2008-06-01

    Full Text Available El surgimiento y desarrollo del láser fue posible gracias a los avances previamente logrados en otras disciplinas científicas en el pasado siglo. Desde el punto de vista práctico puede ser considerado como un haz estrecho de luz monocromática y coherente que puede encontrarse en el rango visible, infrarrojo o ultravioleta del espectro de las radiaciones electromagnéticas. Motivados por la incorporación de los equipos láser de producción nacional en las salas de rehabilitación de los policlínicos universitarios de la atención primaria y otros centros de salud del país, nos dimos a la tarea de realizar este trabajo, cuyo objetivo fundamental es presentar las distintas aplicaciones del láser de baja potencia en la medicina, y los equipos láser cubanos disponibles en la red nacional de salud pública. Además se muestran los efectos terapéuticos de la radiación láser y los mecanismos internos para lograrlos, y se detallan ampliamente las contraindicaciones de la terapia. Este tipo de tratamiento ofrece muchas posibilidades de ayuda terapéutica y permite ser utilizado con éxito en patologías de diversas especialidades. La terapia láser constituye un tratamiento de primera línea para muchas de las afecciones con que acuden los pacientes a consulta médica.The appearance and development of laser was possible thanks to the advances previously attained in other scientific disciplines in the last century. From the practical point of view, it may be considered as a narrow monochromatic and coherent beam of light that may be found in the visible infrared or ultraviolet range of the spectrum of electromagnetic radiations. Motivated by the introduction of the laser equipment of national production into the rehabilitation wards of the teaching polyclinics and other health centres of the country, we made this paper aimed at presenting the different applications of low potency laser in the medical sphere, as well as the Cuban laser

  20. The politics of suffering: the impact of the U.S. embargo on the health of the Cuban people. Report of a fact-finding trip to Cuba, June 6-11, 1993.

    Science.gov (United States)

    Kuntz, D

    1994-01-01

    The past several years have been difficult for the Cuban people. The economies of Cuba's major trading partners have collapsed. The 33-year U.S. embargo was tightened with passage of "The Cuban Democracy Act of 1992" to include trade--mostly in food and medicines--by subsidiaries of U.S. companies in other countries. The March 1993 "Storm of the Century," which devastated communities from the Caribbean to Canada, caused an estimated $1 billion in damage to Cuba. A mysterious disease known as neuropathy, which can affect vision, appeared in late 1991 and has spread throughout the island. All this has created a situation of scarcity and uncertainty that has affected all aspects of Cuban society, including its health care system. In June 1993 a delegation that included members of the American Public Health Association traveled to Cuba to investigate the current health situation in the country, with an emphasis on the impact of the U.S. embargo. The delegation found that compared to two and three years ago, the general standard of living in Cuba and the quality of health services have declined dramatically. It concluded that while the overall health of the Cuban population has not yet seriously eroded as a result of the economic decline, severe problems threaten to emerge in the future. The delegation called for lifting of the embargo as part of a new approach in U.S. policy toward Cuba.

  1. Oral Testimony from the Hispanic Community of Greater Boston; Programa Para el Desarrollo de un Curriculo Universitario en Estudios Etnicos Puertorriquenos y Cubanos (Program for the Development of a University Curriculum in Puerto Rican and Cuban Ethnic Studies).

    Science.gov (United States)

    Forbes, Robert J., Ed.

    The oral testimony presented in this document was designed to supplement materials, strategies, and recommendations contained in "Guidelines for the Development of a Program in Puerto Rican and Cuban Ethnic Heritage Studies at the Post-Secondary Level" (Curry College, 1976). Part 1, "The Hispanic Media," consists of interviews…

  2. La Naturaleza del Estado Cubano y el Llamado a La Inversion Extranjera: Crisis o Invitacion al Cambio (The Nature of the Cuban State and the Call for Foreign Investment: Crisis or Invitation to Change).

    Science.gov (United States)

    Campbell, Luis E. Hartly

    1995-01-01

    Presents a study of the period of crisis in modern Cuba dating back to 1991. An overview of the Cuban character is given in order to promote understanding of the environment that has permitted the present socialist government to remain in power since 1959. It is concluded that Cuba requires massive foreign investment in every sector for its…

  3. Project Half Double

    DEFF Research Database (Denmark)

    Svejvig, Per; Gerstrøm, Anna; Frederiksen, Signe Hedeboe

    projects and to document their development. The purpose of this addendum is thus to document the development in the pilot projects from June 2016 to January 2017 with particular focus on the impact they have created. This Addendum is a supplement and should be read in conjunction with the Phase 1 report...... by the day. The formal part of Project Half Double was initiated in June 2015; it is divided into two phases where phase 1 took place from June 2015 to June 2016 with seven pilot projects, and phase 2 is in progress from July 2016 to July 2017 with 10 pilot projects. The Half Double consortium: Implement....... The Danish Industry Foundation, an independent philanthropic foundation, is contributing to the project financially with DKK 13.8 million. About the addendum: We published the report “Preliminary results for phase 1” in June 2016 (Svejvig, Ehlers et al. 2016). It is time to follow up on the Phase 1 pilot...

  4. The double Laplacian growth

    International Nuclear Information System (INIS)

    Loutsenko, I.; Yermolayeva, O.

    2008-06-01

    The dynamics of the idealized Laplacian growth (or the Hele-Shaw problem) can be approximated by the Poiselle flow which in appropriate units takes the form of the Darcy law. In this paper we account for the liquid inertia in the Hele-Shaw problem at zero surface tension limit. The Laplace dynamics for the pressure is extended here with one more for the velocity potential for which we call this growth process the Double Laplacian. The application of the conformal mappings technique leads to doubled dynamics for both the conformal map and the complex potential, which is presented in the paper for the radial and the planar growth. We apply the stability analysis and discuss the integrability for the stated problem. (author)

  5. Subatmospheric double containment system

    International Nuclear Information System (INIS)

    Gans, D. Jr.; Noble, J.H.

    1978-01-01

    A reinforced concrete double wall nuclear containment structure with each wall including an essentially impervious membrane or liner and porous concrete filling the annulus between the two walls is described. The interior of the structure is maintained at subatmospheric pressure, and the annulus between the two walls is maintained at a subatmospheric pressure intermediate between that of the interior and the surrounding atmospheric pressure, during normal operation. In the event of an accident within the containment structure the interior pressure may exceed atmospheric pressure, but leakage from the interior to the annulus between the double walls will not result in the pressure of the annulus exceeding atmospheric pressure so that there is no net outleakage from the containment structure

  6. Neutrinoless double beta decay

    Indian Academy of Sciences (India)

    2012-10-06

    Oct 6, 2012 ... nuclear decay of neutrinoless double beta decay typically leading to sub-eV values as well. (Z, A) → (Z + 2, A) + 2e .... Here again energy resolution matters, because of the continuous spectrum of the 2νββ- decay mode, its high .... The benefit of using Te is its high natural abundance. This experiment is in ...

  7. Double layers - theory and experiment

    International Nuclear Information System (INIS)

    Torven, S.

    1980-06-01

    A survey is given of recent investigations of electric double layers in low density plasmas. The existence of double layers is now well established in both magnetized and unmagnetized plasmas. Laboratory experiments and numerical simulations show that double layers coexist with waves and fluctuations as expected in view of the particle beams which are formed in the layer. Under certain conditions the level of the fluctuations is small and experimental results then compare favourably with stationary double layer models. Significant progress on layer formation processes has been made, but further investigations are required to predict under what conditions double layers will form in different types of plasmas. (author)

  8. Tuberculosis notificada en cuatro municipios de la capital cubana Tuberculosis reported in four municipalities of the Cuban capital

    Directory of Open Access Journals (Sweden)

    Tamine Jordán Severo

    2011-09-01

    Cotorro municipalities. METHODS: A descriptive study of cases of tuberculosis reported in 2008 was conducted in four municipalities of the southern of Cuban capital. These persons were visited in their homes and interviewed using a previously validated additional questionnaire. A database was created processed in Epi Info 2002. RESULTS: In this four municipalities fifty nine cases of tuberculoses were reported with a disease incidence rate between 6.2 and 10.1/100 00 inhabitants. The 72.9 % of cases aged between 15 and 19 and the 78 % was of male sex; the 86.4 % had pulmonary tuberculosis and the 13.6 % deceased. The 91.5 % was of a risk group mainly the elderly, alcoholics and ex-imprisoneds. The 100 % of deceased were of risk group. CONCLUSIONS: The four municipalities showed incidence rates > 5/100 000 inhabitants and all except the Arroyo Naranjo municipality were over the national rate; with predominance of ages from 15 to 59 years, male sex and pulmonary tuberculosis with a positive bacilloscopy most of them from important vulnerable groups in which are included most of deceased.

  9. Ac-induced disruption of the doubleDs structure in tomato

    NARCIS (Netherlands)

    Rommens, Caius M.T.; Biezen, Erik A. van der; Ouwerkerk, Pieter B.F.; Nijkamp, H. John J.; Hille, Jacques

    1991-01-01

    The maize doubleDs element is stably maintained in the tomato genome. Upon the subsequent introduction of Ac into a plant containing doubleDs, disruption of the doubleDs structure and DNA rearrangements at the site of the doubleDs element were observed. No indications were obtained for excision of

  10. Assessing the 2D models of geotechnical variables in a block of a Cuban lateritic site. Fifth part: combinatorial optimization of the UPD method

    Directory of Open Access Journals (Sweden)

    Arístides A. Legrá-Lobaina

    2016-12-01

    Full Text Available In the work, through exhaustive searches, we study the combinatorial optimization of two - dimensional UPD modeling of the variables: thickness and concentrations of nickel, iron and cobalt in a block of a Cuban lateritic deposit. The UPD method is a numerical estimator with parameters q, δ and ε that from a set of data allows to obtain a mesh model that represents the behavior of a property U of some natural or technological object that is investigated in a certain spatial domain. For a set of n points (Pi; Ui, which express the values Ui for the corresponding spatial coordinates Pi, this method allows to estimate the value of U for any coordinate P of its domain, as a linear combination of powers q of euclidian distances.

  11. ‘We feel stupid and we shouldn’t.’ Towards developing a communication support system for Cuban-trained medical students

    Directory of Open Access Journals (Sweden)

    Gasiorek, Jessica

    2014-12-01

    Full Text Available This article presents a case study of a small group of South African medical students who have returned to South Africa after six years of medical education in Cuba, where they were trained in a different language (Spanish and medical system (Cuban from what they will ultimately practice in as South African doctors. This study sought to better understand the linguistic, cultural, and communicative challenges that this group faced upon returning to South Africa, with the ultimate goal of creating materials to support the students’ language learning in the clinical domain. The researchers found that students reported considerable difficulties with (re-integrating into South African culture and clinical contexts; specific issues included encountering different types of medical issues in South Africa compared to Cuba and difficulty in understanding and using medical terminology in English and Afrikaans. This case study concludes with specific recommendations for developing learning materials that address these students’ unique linguistic and communicative needs.

  12. Obtaining family consent for participation in Alzheimer’s research in a Cuban-American population: Strategies to overcome the barriers

    Science.gov (United States)

    Williams, Christine L.; Tappen, Ruth; Buscemi, Charles; Rivera, Richard; Lezcano, Jennifer

    2007-01-01

    Cultural values and beliefs affect family attitudes toward participation in research. Significant resistance to allowing their elders with dementia to participate in clinical research was encountered in Cuban-American families. These families expressed concern about disturbing the elder’s comfort (tranquilidad) and solitude (soledad) Furthermore, most believed that intervention would be futile. Feelings of guilt associated with nursing home placement may have been exacerbated by the suggestion that active intervention could be effective. Strategies to overcome these barriers included reduced emphasis on the potential superiority of the intervention to be tested, reassurance that contact with research staff was usually appreciated by participants, arrangements to talk with the family as a group about the study, and increased use of Spanish-language consent forms. PMID:11398568

  13. Confirmation of the correct application of the gamma spectrometric method carried out in the Cuban Center for Radiation Protection and Hygiene

    International Nuclear Information System (INIS)

    Fernandez Gomez, Isis M.; Carrazana Gonzalez, Jorge A.; Capote Ferrera, Eduardo

    2008-01-01

    One of the technical requirements of the standard ISO/IEC 17025:2006 is that the laboratories that use standard methods shall confirm that they can properly operate these before introducing the tests or calibrations. Among the testing activities that execute the Environmental Radiological Surveillance Laboratory of the Cuban Center for Radiation Protection and Hygiene, is the determination of gamma radionuclides by gamma spectrometry with HPGe detectors. This test has been accredited by the Cuban Accreditation Body, according to the standard ISO/IEC 17025:2005. Fulfilling the requirements of this standard, regarding the selection of methods, the laboratory uses internationally standard method for its gamma spectrometry determinations. For this reason it was necessary to confirm the correct application of the selected method before incorporating it as scientific-technical service that the institution offers. With this purpose the method confirmation using certified reference materials of different matrixes and for the different geometries used in the laboratory were carried out. The obtained results of this study were processed statistically to check the precision and trueness of the same ones. In this sense, the laboratory participates periodically in interlaboratory comparison programs that include the radionuclides analysis by gamma spectrometry, as another form of accuracy confirmation of the results that the laboratory reports. In this paper the design of the realized intralaboratory study, as well as the results of it are presented. From the obtained results in the realized study, as well as from the interlaboratory comparison programs, it is possible to conclude that the method used in the laboratory is executed appropriately and it is under control. (author)

  14. Antecedentes de la formación investigativa del psicólogo en Cuba / Antecedents of Cuban psychologist research training

    Directory of Open Access Journals (Sweden)

    Parra, Yanet

    2016-04-01

    Full Text Available El artículo presenta resultados parciales de una investigación sobre la formación de la competencia investigativa desde el dominio de recursos metodológicos cualitativos. El objetivo fue hacer un acercamiento a la comprensión del proceso de atención al componente investigativo en la formación del profesional de la psicología en Cuba. A partir del empleo de métodos teóricos se realiza un análisis del componente investigativo del proceso de formación del profesional que tomó como indicadores fundamentales el nivel de relevancia de la formación científica en el proceso de formación, la metodología que prevalece y el manejo de enfoques metodológicos de investigación. Los resultados principalesdescriben la significación otorgada al componente investigativo y los principales enfoques metodológicos asumidos. Palabras clave: , , . ABSTRACT The paper is an account of partial results of a research on the training of inquiring competence from the perspective of qualitative methodological resources. The research was aimed at making an initial approach to the understanding the education of Cuban psychologist as researchers. Several theoretical methods were used to reveal the main trends on the basis of the following indicators: relevance of scientific training in Cuban psychologist, prevailing methodology and research approach. The findings account for the significance given to the research component and the main approach they have been followed at different stages.

  15. The Double Star mission

    Directory of Open Access Journals (Sweden)

    Liu

    2005-11-01

    Full Text Available The Double Star Programme (DSP was first proposed by China in March, 1997 at the Fragrant Hill Workshop on Space Science, Beijing, organized by the Chinese Academy of Science. It is the first mission in collaboration between China and ESA. The mission is made of two spacecraft to investigate the magnetospheric global processes and their response to the interplanetary disturbances in conjunction with the Cluster mission. The first spacecraft, TC-1 (Tan Ce means "Explorer", was launched on 29 December 2003, and the second one, TC-2, on 25 July 2004 on board two Chinese Long March 2C rockets. TC-1 was injected in an equatorial orbit of 570x79000 km altitude with a 28° inclination and TC-2 in a polar orbit of 560x38000 km altitude. The orbits have been designed to complement the Cluster mission by maximizing the time when both Cluster and Double Star are in the same scientific regions. The two missions allow simultaneous observations of the Earth magnetosphere from six points in space. To facilitate the comparison of data, half of the Double Star payload is made of spare or duplicates of the Cluster instruments; the other half is made of Chinese instruments. The science operations are coordinated by the Chinese DSP Scientific Operations Centre (DSOC in Beijing and the European Payload Operations Service (EPOS at RAL, UK. The spacecraft and ground segment operations are performed by the DSP Operations and Management Centre (DOMC and DSOC in China, using three ground station, in Beijing, Shanghai and Villafranca.

  16. Double your money

    International Nuclear Information System (INIS)

    Moxon, Suzanne

    1998-01-01

    The government-owned Hydro-Quebec was instructed to take certain actions, one of which was to increase profits. The company has published a report describing its plans for 1998-2002. The company expects to increase sales and double its income over the five years. Hydro-Quebec (which produces or purchases 97% of the electricity consumed in the province) will freeze prices until April 2002. Environmental considerations and liaison with local communities are included in the 5-year plan. The company expects to invest c$1.2B in international markets over the five years and C$20M per year are earmarked for research. (UK)

  17. Double profunda brachii artery

    Directory of Open Access Journals (Sweden)

    Gavishiddappa A Hadimani

    2016-01-01

    Full Text Available Brachial artery (BA is a continuation of the axillary artery at the lower border of teres major. In the cubital fossa, BA divides into radial artery and ulnar artery as terminal branches. Large branch given from the BA in the upper part is profunda brachii artery. In the present case, we noticed double profunda brachii that arises from the BA. They are profunda brachii artery 1 and profunda brachii artery 2. Profunda brachii artery 1 arises in the proximal part of the BA and profunda brachii artery 2 arises distal to the profunda brachii artery 1. Both the arteries run inferolaterally in the spiral groove along with radial nerve. Variations of profunda brachii artery are important during harvesting of the lateral arm flaps and may lead to inadvertent injury during percutaneous arterial catheterization or injection of drugs.

  18. Double-Skin Facade

    DEFF Research Database (Denmark)

    Kalyanova, Olena

    , transparent insulation and preheating operation modes of DSF cavity. The data sets include measurements of naturally induced air flow, temperature gradients, velocity profiles, climate data, etc. Two data sets were used for further empirical validation of building simulation software for DSF modelling within...... favored by companies and their employees. To bring the reduction of energy use in these buildings application of suitable tools and methods is necessary to achieve successful design solutions. Earlier work on the topic of DSF modelling was examined from various publications. As a result, the main...... to perform the simulations. To fill in the gap of lacking experimental data a range of measurements was carried out in an outdoor, double-skin façade full-scale test facility ‘The Cube'. As a result, three complete sets of experimental data were composed. These are available for external air curtain...

  19. GENERALIZED DOUBLE PARETO SHRINKAGE.

    Science.gov (United States)

    Armagan, Artin; Dunson, David B; Lee, Jaeyong

    2013-01-01

    We propose a generalized double Pareto prior for Bayesian shrinkage estimation and inferences in linear models. The prior can be obtained via a scale mixture of Laplace or normal distributions, forming a bridge between the Laplace and Normal-Jeffreys' priors. While it has a spike at zero like the Laplace density, it also has a Student's t -like tail behavior. Bayesian computation is straightforward via a simple Gibbs sampling algorithm. We investigate the properties of the maximum a posteriori estimator, as sparse estimation plays an important role in many problems, reveal connections with some well-established regularization procedures, and show some asymptotic results. The performance of the prior is tested through simulations and an application.

  20. Doubled Color Codes

    Science.gov (United States)

    Bravyi, Sergey

    Combining protection from noise and computational universality is one of the biggest challenges in the fault-tolerant quantum computing. Topological stabilizer codes such as the 2D surface code can tolerate a high level of noise but implementing logical gates, especially non-Clifford ones, requires a prohibitively large overhead due to the need of state distillation. In this talk I will describe a new family of 2D quantum error correcting codes that enable a transversal implementation of all logical gates required for the universal quantum computing. Transversal logical gates (TLG) are encoded operations that can be realized by applying some single-qubit rotation to each physical qubit. TLG are highly desirable since they introduce no overhead and do not spread errors. It has been known before that a quantum code can have only a finite number of TLGs which rules out computational universality. Our scheme circumvents this no-go result by combining TLGs of two different quantum codes using the gauge-fixing method pioneered by Paetznick and Reichardt. The first code, closely related to the 2D color code, enables a transversal implementation of all single-qubit Clifford gates such as the Hadamard gate and the π / 2 phase shift. The second code that we call a doubled color code provides a transversal T-gate, where T is the π / 4 phase shift. The Clifford+T gate set is known to be computationally universal. The two codes can be laid out on the honeycomb lattice with two qubits per site such that the code conversion requires parity measurements for six-qubit Pauli operators supported on faces of the lattice. I will also describe numerical simulations of logical Clifford+T circuits encoded by the distance-3 doubled color code. Based on a joint work with Andrew Cross.

  1. Formation of Double Neutron Stars, Millisecond Pulsars and Double ...

    Indian Academy of Sciences (India)

    Edward P. J. Heuvel

    2017-09-12

    Sep 12, 2017 ... Abstract. The 1982 model for the formation of Hulse–Taylor binary radio pulsar PSR B1913+16 is described, which since has become the 'standard model' for the formation of the double neutron stars, confirmed by the. 2003 discovery of the double pulsar system PSR J0737-3039AB. A brief overview is ...

  2. Draping Double-Layer Woven Fabrics Onto Double-Curvature ...

    African Journals Online (AJOL)

    Draping woven fabrics to complex parts with double curvature leads to complex redistribution and reorientation of the yarns in composites reinforced with woven preforms. To reduce the risk of fabric tearing or wrinkling we propose to use double-layer woven fabrics. This paper presents a simulation model for draping

  3. A tetranuclear cubane-like nickel(II complex with a tridentate salicylideneimine Schiff base ligand: tetrakis[μ3-4-methyl-N-(2-oxidophenylsalicylideneiminato]tetrakis[methanolnickel(II] methanol 0.8-solvate

    Directory of Open Access Journals (Sweden)

    Gordana Pavlović

    2016-12-01

    Full Text Available The tetranuclear title complex, [Ni4(C14H11NO24(CH3OH4]·0.8CH3OH, has a distorted cubane topology shaped by four Schiff base ligands. The cubane [Ni4(μ3-O4] core is formed via the O atoms from the Schiff base ligands. The octahedrally coordinated NiII ions occupy alternating vertices of the cube. Each NiII ion is coordinated by one O,N,O′-tridentate dianionic ligand, two O atoms of oxidophenyl groups from adjacent ligands and the O atom of a coordinating methanol molecule. The cubane core is stabilized via an intramolecular O—H...O hydrogen bond between the hydroxy group of the coordinating methanol molecules and the phenolate O atom of the aldehyde Schiff base fragment. Additional stabilization is obtained via intramolecular C—H...O hydrogen bonds involving aromatic C—H groups and the oxygen atoms of adjacent methanol molecules. In the crystal, complex molecules are linked into chains parallel to the c axis via weak C—H...O hydrogen bonds. The partial-occupancy disordered methanol solvent molecule has a site occupancy of 0.8 and is linked to the tetranuclear unit via an intermolecular C—H...O hydrogen bond involving a phenolate O atom.

  4. Double parton scattering theory overview

    NARCIS (Netherlands)

    Diehl, Markus; Gaunt, Jonathan R.

    2017-01-01

    The dynamics of double hard scattering in proton-proton collisions is quite involved compared with the familiar case of single hard scattering. In this contribution, we review our theoretical understanding of double hard scattering and of its interplay with other reaction mechanisms.

  5. Profilaxis perioperatoria en cirugía urológica en hospitales cubanos Perioperative prophylaxis in urological surgery at Cuban hospitals

    Directory of Open Access Journals (Sweden)

    Humberto Guanche Garcell

    2011-12-01

    Full Text Available Objetivo: describir las prácticas de profilaxis perioperatoria con antibióticos en procederes urológicos en hospitales cubanos. Métodos: estudio descriptivo de corte transversal realizado en el período mayo-diciembre de 2009, mediante la aplicación de cuestionario auto administrado, en el cual se evaluó la existencia de política (documento escrito de uso profiláctico, y de recomendaciones para la profilaxis en procederes seleccionados, el momento para administrar la dosis inicial y la duración probable del régimen profiláctico y los antimicrobianos utilizados. Resultados: se obtuvo información de 24 hospitales (36,6 % de los servicios de urología cubanos, incluyendo instituciones de 11 de las provincias (84,6 %. Poseen políticas escritas en 17 de los servicios (70,8 %. La mayoría de ellos tienen indicaciones de profilaxis para los procederes evaluados, y en el 100 % de los servicios para la resección transuretral de próstata, cirugía abierta o laparoscópica que incluye intestino, cistoscopia terapéutica y uretrotomia interna endoscópica. El 29,2 % de los servicios recomiendan el momento de inicio de la profilaxis la noche antes, el 41,7 % 60 minutos antes del proceder y el 29,2 % en la inducción anestésica. Esquemas superiores a 24 horas se recomiendan en la mayoría de los procederes, con excepción de la cistoscopia diagnóstica o terapéutica. Variedad de antimicrobianos o combinaciones de estos son utilizados, con predominio de la ciprofloxacina y cefazolina. Conclusión: variabilidad en las prácticas de prescripción de antimicrobianos en la profilaxis perioperatoria en los servicios de urología cubanos se ha identificado, para lo que se requiere un consenso nacional que contribuya a mejorar la calidad en el cumplimiento de está práctica de prevención.Objective: to describe the practices of perioperative prophylaxis using antibiotics in urologic procedures at Cuban hospitals. Method: a cross-sectional and

  6. Double Tracks closure report

    International Nuclear Information System (INIS)

    1997-06-01

    This report describes the remediation activities performed and the results of postremediation radiation surveys conducted at the Double Tracks site, located on Range 71 North, of the Nellis Air Force Range (NAFR) in southern Nevada. This remediation was conducted from June to August 1996 in accordance with the Interim Corrective Action Plan (ICAP) to remediate the site to an acceptable risk to human health and the environment. Soil with a total transuranic activity greater than 200 picoCuries per gram (pCi/g) was excavated, shipped to the Nevada Test Site (NTS), and disposed at the Area 3 Radioactive Waste Management Site (RWMS). A total of 52.3 grams of plutonium (Pu) with an activity of 5.12 Curies was disposed. The concrete pad at ground zero (GZ) was broken up, placed in a Sealand reg-sign container, and shipped to the NTS Area 6 decontamination pad. Additionally, approximately 10 m 3 (350 ft 3 ) of soil containing small chips of concrete was shipped to the NTS Area 6 decontamination pad. The concrete and soil/concrete mixture will be further characterized prior to disposal. At the time this report was written, characterization samples were being collected, with analytical results expected in January 1997. It is anticipated that the material will be disposed in mid-1997. This remediation is an interim action because final cleanup levels have not been established

  7. Double chambered right ventricle

    Energy Technology Data Exchange (ETDEWEB)

    Cho, Chul Koo; Yu, Yun Jeong; Yeon, Kyung Mo; Han, Man Chung [Seoul National University College of Medicine, Seoul (Korea, Republic of)

    1983-12-15

    Fourteen cases of double chambered right ventricle were diagnosed angiographically and of these nine cases were confirmed after operation and autopsy at Seoul National University Hospital in recent four years since 1979. The clinical and radiological findings with the emphasis on the cinecardiographic findings were analysed. The summaries of the analysis are as follows: 1. Among 14 cases, 6 cases were male and 8 cases were female. Age distribution was from 4 years to 36 years. 2. In chest x-ray findings, pulmonary vascularity was increased in 8 cases, decreased in 4 cases, and normal in 2 cases. Cardiomegaly was observed in 8 cases and other showed normal heart size. 3. In cinecardiography, 11 cases had interventricular septal defect. Among these 11 cases, VSD located in proximal high pressure chamber was in 2 cases and located in distal low pressure chamber was in 9 cases. 4. The location of aberrant muscle bundle in sinus portion of right ventricle was in 8 cases. In the rest 6 cases, the aberrant muscle bundle was located below the infundibulum of right ventricle. 5. For accurate diagnosis and differential diagnosis with other congenital cardiac anomalies such as Tetralogy of Fallot or isolated pulmonic stenosis, biplane cineangiography and catheterization is an essential procedure.

  8. Double chambered right ventricle

    International Nuclear Information System (INIS)

    Cho, Chul Koo; Yu, Yun Jeong; Yeon, Kyung Mo; Han, Man Chung

    1983-01-01

    Fourteen cases of double chambered right ventricle were diagnosed angiographically and of these nine cases were confirmed after operation and autopsy at Seoul National University Hospital in recent four years since 1979. The clinical and radiological findings with the emphasis on the cinecardiographic findings were analysed. The summaries of the analysis are as follows: 1. Among 14 cases, 6 cases were male and 8 cases were female. Age distribution was from 4 years to 36 years. 2. In chest x-ray findings, pulmonary vascularity was increased in 8 cases, decreased in 4 cases, and normal in 2 cases. Cardiomegaly was observed in 8 cases and other showed normal heart size. 3. In cinecardiography, 11 cases had interventricular septal defect. Among these 11 cases, VSD located in proximal high pressure chamber was in 2 cases and located in distal low pressure chamber was in 9 cases. 4. The location of aberrant muscle bundle in sinus portion of right ventricle was in 8 cases. In the rest 6 cases, the aberrant muscle bundle was located below the infundibulum of right ventricle. 5. For accurate diagnosis and differential diagnosis with other congenital cardiac anomalies such as Tetralogy of Fallot or isolated pulmonic stenosis, biplane cineangiography and catheterization is an essential procedure

  9. Double mental foramina

    Directory of Open Access Journals (Sweden)

    Taruska Ventorini Vasconcelos

    Full Text Available The knowledge of the location, trajectory, and characteristics of the neurovascular bundles in the jaws is fundamental to reduce risk of injuries to this structure during surgical procedures, especially when anatomical variations are present. The presence of anatomical variations associated with the mental foramen has been reported in some cases and is frequently undervalued in clinical procedures. Sensorial disturbances, such as paresthesia in the lower lip or cheeks, may occur as result of pressure on the mental foramen. These anatomical variations can be detected in clinical practice by imaging exams. Computed tomography has been established as a valuable imaging modality capable of providing in-depth information about maxillofacial structures, allowing detailed evaluation of their topography and anatomical variations, such as additional mental foramina. The objective of this article was to describe a case with double mental foramina that only could be observed in computed tomography images. The use of cone beam computed tomography has increased in dentistry, thus anatomical variations that may have an influence on the diagnosis and treatment planning must be recognized. Have a good knowledge of additional mental foramina may contribute to adequate anesthetic techniques and to avoid misdiagnosis of bone lesions and eventual damages to the nerves and vessel during surgical procedures in that region.

  10. Antarctic radiation exposure doubles

    Science.gov (United States)

    Blue, Charles

    New data reveal that the Antarctic Peninsula received twice its normal maximum dose of hazardous solar ultraviolet radiation in December 1990. The prolonged persistence of the ozone hole over Antarctica caused an increased exposure of radiation, according to a paper published in the October issue of Geophysical Research Letters.John Frederick and Amy D. Alberts of the University of Chicago calculated the amount of ultraviolet solar spectral radiation from data collected at Palmer Station, Antarctica. During the spring of 1990 the largest observed values for ultraviolet radiation were approximately double the values expected, based on previous years. “The measurements from Palmer Station are consistent with similar data from McMurdo Sound, where a factor of three [ultraviolet radiation] enhancement was recorded, according to work by Knut Stamnes and colleagues at the University of Alaska,” Frederick said. “The radiation levels observed over Palmer Station in December 1990 may be the largest experienced in this region of the world since the development of the Earth's ozone layer,” he added.

  11. Development and evaluation of an instrument to measure health-related quality of life in Cuban breast cancer patients receiving radiotherapy.

    Science.gov (United States)

    Lugo, Josefina; Nápoles, Misleidy; Pérez, Inés; Ordaz, Niurka; Luzardo, Mario; Fernández, Leticia

    2014-01-01

    INTRODUCTION Although modern technology has extended the survival of breast cancer patients, treatment's adverse effects impact their health-related quality of life. Currently, no instrument exists capable of identifying the range of problems affecting breast cancer patients receiving radiotherapy in Cuba's socioeconomic and cultural context. OBJECTIVES Construct and validate an instrument to measure the effects of breast cancer and radiotherapy on health-related quality of life in Cuban patients. METHODS The study was conducted at the Oncology and Radiobiology Institute, Havana, Cuba, from January 2010 through December 2011. Inclusion criteria were: adult female, histological diagnosis of breast cancer, treated with ambulatory radiotherapy, and written informed consent; patients unable to communicate orally or in writing, or who had neurologic or psychiatric conditions were excluded. Development phase: focus groups guided by a list of questions were carried out with 50 women. The patients reported 61 problems affecting their health-related quality-of-life. A nominal group (six oncologists and two nurses) identified the same problems. A syntactic analysis of the information was performed to create items for study and measurement scales. Content validity was determined by a nominal group of seven experts using professional judgment. Another 20 patients were selected to evaluate face validity. Validation phase: the instrument was applied to 230 patients at three different points: before radiotherapy, at the end of radiotherapy and four weeks after radiotherapy was concluded. Reliability, construct validity, discriminant validity, predictive validity, interpretability and response burden were evaluated. RESULTS The final instrument developed had 33 items distributed in 4 domains: physical functioning, psychological functioning, social and family relationships, and physical and emotional adverse effects of disease and treatment. There were two discrete items: perceived

  12. Medición objetiva de la calidad sonora de las tumbadoras // Objective measurement of the sound quality in Cuban drums

    Directory of Open Access Journals (Sweden)

    J. I. Hernández Cruz

    2000-01-01

    Full Text Available Mediante grabaciones de golpes específicos de tumbadora y el procesamiento posterior de las señales obtenidas se puedecaracterizar objetivamente la calidad de una muestra de tumbadoras [ 2 ] .Al cuero se le da un tratamiento de placa delgada plana circular empotrada en los bordes y se determina la amplitud de lasoscilaciones como invariante que influye decisivamente en la calidad de las vibraciones. En el análisis de resistencia demateriales se considera la carga aplicada en el centro de la boca (r = 0, y luego se coloca en la dirección radial hasta r =rmax. Resolviendo la ecuación de Sofi German se encuentra una expresión matemática para la flecha y los factoresgeométricos, la forma de aplicar la carga y las características del cuero que afectan la flecha (es decir la sonoridad deltamborSe hace un análisis estadístico de las amplitudes, aplicándole las series de Fourier a las señales sonoras obtenidas,lográndose total coincidencia entre los resultados de la valoración subjetiva de musicólogos y especialistas y la mediciónobjetiva de ensayos realizados en un conjunto de tumbadoras. Se obtuvieron valores de error estándar cero y distribución deerror despreciables para las tumbadoras consideradas patrón y las profesionales.Palabras claves: Sonido, instrumentos musicales, percusión, tumbadoras._____________________________________________________________________AbstractRecording different blows performed on tumbadoras heads and testing the obtained signs afterwards, could be analyzed thequality of a set of Cuban drums.The leather is treated as a thin circular plate fixed in the outer edge; , the amplitude of the vibrations are considered theuppermost characteristic that leans on the sound nature. In a strength of materials analysis is considered the load in the center ofthe drums head and it is spread all over the leather surface. A math expression is found while solving Sofi German´s equationthat match with the arrow

  13. Aspects of the doubled worldsheet

    Energy Technology Data Exchange (ETDEWEB)

    Driezen, Sibylle; Sevrin, Alexander; Thompson, Daniel C. [Theoretische Natuurkunde, Vrije Universiteit Brussel and The International Solvay Institutes,Pleinlaan 2, B-1050 Brussels (Belgium)

    2016-12-16

    We clarify the relation between various approaches to the manifestly T-duality symmetric string. We explain in detail how the PST covariant doubled string arises from an unusual gauge fixing. We pay careful attention to the role of “spectator” fields in this process and also show how the T-duality invariant doubled dilaton emerges naturally. We extend these ideas to non-Abelian T-duality and show they give rise to the duality invariant formalism based on the semi-Abelian Drinfeld Double. We then develop the N=(0,1) supersymmetric duality invariant formalism.

  14. Evaluation of the tolerance to Finale® in the germination and regeneration of Cuban rice varieties (IACuba-17 and IACuba-19

    Directory of Open Access Journals (Sweden)

    Daymí Abreu

    2005-01-01

    Full Text Available Selection agent used during the shoot selection has an important role on the transgenic plant generation efficiency. In this work, the tolerance to the herbicide Finale® in two Cuban rice cultivars, IACuba17 and IACuba-19 was evaluated, and determined that 10 days exposure to 5 and 10 mg.l-1 of Finale® were enough to avoid seedlings of IAC-17 and IAC-19, respectively. Cultivated calluses (0, 2, 4 and 6 days in the absence of Finale®in the regeneration medium were used to evaluate the minimal concentration of Finale®that totally inhibits shoot regeneration. Pre-induced calluses cultured during two days and 3 mg.l-1 of Finale® in the regeneration medium was the most efficient combination to select shoots during the generation of transgenic plants resistant to the herbicide. Our shoot selection procedure reduces to 3 weeks the time to obtain shoots during the generation of transgenic rice plants. Key words: germination, mature seeds, Oryza, phosphinothricin, regeneration, selection markers

  15. Cuban and Brazilian red propolis: botanical origin and comparative analysis by high-performance liquid chromatography-photodiode array detection/electrospray ionization tandem mass spectrometry.

    Science.gov (United States)

    Piccinelli, Anna Lisa; Lotti, Cinzia; Campone, Luca; Cuesta-Rubio, Osmany; Campo Fernandez, Mercedes; Rastrelli, Luca

    2011-06-22

    Chemical composition of propolis depends on the specificity of the local flora at the site of collection and thus on the geographic and climatic characteristics of this place. This paper describes a comparative analysis of Cuban red propolis (CRP), Brazilian red propolis (BRP), and Dalbergia ecastophyllum exudates (DEE) by high-performance liquid chromatography with diode-array detection and tandem mass spectrometry. The aim of this study was to investigate the overall chemical profile and the botanical origin of red propolis and to suggest similarities and differences between samples collected in different tropical regions. Isoliquiritigenin (1), liquiritigenin and naringenin (2 and 17), isoflavones (3-4 and 16), isoflavans (5-7 and 18), and pterocarpans (8-13) were detected in CRP, BRP, and DEE, whereas polyisoprenylated benzophenones (PPBs) guttiferone E/xanthochymol (14a,b) and oblongifolin A (15) were detected only in BRP. Pigments responsible for the red color of DEE and red propolis were also identified as two C30 isoflavans, the new retusapurpurin B (19) and retusapurpurin A (20). PPBs and pigments were isolated and unambiguously characterized by 1D and 2D NMR analysis. These results show that red propolis samples from different tropical zones have a similar chemical composition. DEE is the main red propolis source, but the presence of PPBs in BRP suggests the contribution of different botanical sources for Brazilian samples. This chemical information is important for quality control of red propolis and its commercial products and for biological study.

  16. Designing and Implementing an Assay for the Detection of Rare and Divergent NRPS and PKS Clones in European, Antarctic and Cuban Soils.

    Directory of Open Access Journals (Sweden)

    Gregory C A Amos

    Full Text Available The ever increasing microbial resistome means there is an urgent need for new antibiotics. Metagenomics is an underexploited tool in the field of drug discovery. In this study we aimed to produce a new updated assay for the discovery of biosynthetic gene clusters encoding bioactive secondary metabolites. PCR assays targeting the polyketide synthases (PKS and non-ribosomal peptide synthetases (NRPS were developed. A range of European soils were tested for their biosynthetic potential using clone libraries developed from metagenomic DNA. Results revealed a surprising number of NRPS and PKS clones with similarity to rare Actinomycetes. Many of the clones tested were phylogenetically divergent suggesting they were fragments from novel NRPS and PKS gene clusters. Soils did not appear to cluster by location but did represent NRPS and PKS clones of diverse taxonomic origin. Fosmid libraries were constructed from Cuban and Antarctic soil samples; 17 fosmids were positive for NRPS domains suggesting a hit rate of less than 1 in 10 genomes. NRPS hits had low similarities to both rare Actinobacteria and Proteobacteria; they also clustered with known antibiotic producers suggesting they may encode for pathways producing novel bioactive compounds. In conclusion we designed an assay capable of detecting divergent NRPS and PKS gene clusters from the rare biosphere; when tested on soil samples results suggest the majority of NRPS and PKS pathways and hence bioactive metabolites are yet to be discovered.

  17. Sex allocation and secondary sex ratio in Cuban boa ( Chilabothrus angulifer): mother's body size affects the ratio between sons and daughters

    Science.gov (United States)

    Frynta, Daniel; Vejvodová, Tereza; Šimková, Olga

    2016-06-01

    Secondary sex ratios of animals with genetically determined sex may considerably deviate from equality. These deviations may be attributed to several proximate and ultimate factors. Sex ratio theory explains some of them as strategic decisions of mothers improving their fitness by selective investment in sons or daughters, e.g. local resource competition hypothesis (LRC) suggests that philopatric females tend to produce litters with male-biased sex ratios to avoid future competition with their daughters. Until now, only little attention has been paid to examine predictions of sex ratio theory in snakes possessing genetic sex determination and exhibiting large variance in allocation of maternal investment. Cuban boa is an endemic viviparous snake producing large-bodied newborns (˜200 g). Extremely high maternal investment in each offspring increases importance of sex allocation. In a captive colony, we collected breeding records of 42 mothers, 62 litters and 306 newborns and examined secondary sex ratios (SR) and sexual size dimorphism (SSD) of newborns. None of the examined morphometric traits of neonates appeared sexually dimorphic. The sex ratio was slightly male biased (174 males versus 132 females) and litter sex ratio significantly decreased with female snout-vent length. We interpret this relationship as an additional support for LRC as competition between mothers and daughters increases with similarity of body sizes between competing snakes.

  18. Strengthening the Radiation Protection System in Cuba (SRPS - Cuba). A co-operation project between Cuban and Swedish institutions, February 2001 - June 2003

    International Nuclear Information System (INIS)

    Avila, Rodolfo; Larsson, Carl-Magnus; Prendes, Miguel; Zerquera, Juan Tomas

    2004-02-01

    This project results from the co-operation between a number of Cuban and Swedish institutions. It started in February 2001 and ended in June 2003 and was made possible thanks to the contributions of the Swedish International Development Co-operation Agency (SIDA), the Centro de Proteccion e Higiene de las Radiaciones, Cuba (CPHR), and the Swedish Radiation Protection Authority (SSI). The overall objective was to strengthen the radiation protection system in Cuba, and in this way contribute with the control and reduction of risks to man and the environment from exposures to ionizing radiation. The project focused on four priority areas: 1) Protection of workers and patients exposed to radiation in radiation practices; 2) Preparedness for response to an emergency situation; 3) Environmental radiological protection; and, 4) Exposure to radiation in areas with high levels of natural radioactivity. The present report summarizes the findings of the whole project period, providing an overview of the overall achievements, as well as listing its deliverables. The results of an evaluation of the project, conducted during the final workshop, are also included. The report ends with a list of generic and specific conclusions and recommendations for implementation of the project's achievements and for further development of co-operation

  19. Strengthening the Radiation Protection System in Cuba (SRPS - Cuba). A co-operation project between Cuban and Swedish institutions, February 2001 - June 2003

    Energy Technology Data Exchange (ETDEWEB)

    Avila, Rodolfo; Larsson, Carl-Magnus; Prendes, Miguel; Zerquera, Juan Tomas

    2004-02-01

    This project results from the co-operation between a number of Cuban and Swedish institutions. It started in February 2001 and ended in June 2003 and was made possible thanks to the contributions of the Swedish International Development Co-operation Agency (SIDA), the Centro de Proteccion e Higiene de las Radiaciones, Cuba (CPHR), and the Swedish Radiation Protection Authority (SSI). The overall objective was to strengthen the radiation protection system in Cuba, and in this way contribute with the control and reduction of risks to man and the environment from exposures to ionizing radiation. The project focused on four priority areas: 1) Protection of workers and patients exposed to radiation in radiation practices; 2) Preparedness for response to an emergency situation; 3) Environmental radiological protection; and, 4) Exposure to radiation in areas with high levels of natural radioactivity. The present report summarizes the findings of the whole project period, providing an overview of the overall achievements, as well as listing its deliverables. The results of an evaluation of the project, conducted during the final workshop, are also included. The report ends with a list of generic and specific conclusions and recommendations for implementation of the project's achievements and for further development of co-operation.

  20. Designing and Implementing an Assay for the Detection of Rare and Divergent NRPS and PKS Clones in European, Antarctic and Cuban Soils

    Science.gov (United States)

    Laskaris, Paris; Krsek, Martin; Berry, Andrew E.; Newsham, Kevin K.; Calvo-Bado, Leo; Pearce, David A.; Vallin, Carlos; Wellington, Elizabeth M. H.

    2015-01-01

    The ever increasing microbial resistome means there is an urgent need for new antibiotics. Metagenomics is an underexploited tool in the field of drug discovery. In this study we aimed to produce a new updated assay for the discovery of biosynthetic gene clusters encoding bioactive secondary metabolites. PCR assays targeting the polyketide synthases (PKS) and non-ribosomal peptide synthetases (NRPS) were developed. A range of European soils were tested for their biosynthetic potential using clone libraries developed from metagenomic DNA. Results revealed a surprising number of NRPS and PKS clones with similarity to rare Actinomycetes. Many of the clones tested were phylogenetically divergent suggesting they were fragments from novel NRPS and PKS gene clusters. Soils did not appear to cluster by location but did represent NRPS and PKS clones of diverse taxonomic origin. Fosmid libraries were constructed from Cuban and Antarctic soil samples; 17 fosmids were positive for NRPS domains suggesting a hit rate of less than 1 in 10 genomes. NRPS hits had low similarities to both rare Actinobacteria and Proteobacteria; they also clustered with known antibiotic producers suggesting they may encode for pathways producing novel bioactive compounds. In conclusion we designed an assay capable of detecting divergent NRPS and PKS gene clusters from the rare biosphere; when tested on soil samples results suggest the majority of NRPS and PKS pathways and hence bioactive metabolites are yet to be discovered. PMID:26398766

  1. Hitchcock’s queer doubles

    Directory of Open Access Journals (Sweden)

    Alessandra Brandão

    2013-12-01

    Full Text Available http://dx.doi.org/10.5007/2175-8026.2013n65p17   The “double” is a well-known Hitchcockian motif. Widelyreviewed under a psychoanalytical perspective, the issue ofthe double still presents other important challenges and thisarticle aims at discussing the queer doubles in Hitchcock’s films as “falsifiers” who are opposed to non-queer doubles thatemphasise narrative coherence and legibility. In films such asRebeca, Rope, Vertigo, The Birds, Psycho, and Frenzy, a doublecondenses impulses that are well described by Lee Edelman: “theviolent undoing of meaning, the loss of identity and coherence,the unnatural access to jouissance” (132. These doubles releasethe powers of the false as they complicate the return to an “order”.Therefore, we could argue that such characters are closer tobeing Deleuzian simulacra than psychoanalytical doppelgängers.

  2. The Double Love Commandment

    Directory of Open Access Journals (Sweden)

    Francois P. Viljoen

    2015-03-01

    Full Text Available The Gospel of Matthew was written during a period of dispute between the Matthean community and their fellow Jews, with the Pharisees playing a leading role. The Matthean community was heir to the same scriptures as its opponents. They continued to have a firm commitment to the Torah, but they developed a distinctive understanding of it based on Jesus’ teaching. The formation of this community is investigated in this article, considering the Mediterranean perspectives of group-oriented societies prevalent in the first century. Such a group provided a sense of self and an interactive support system, where love functioned to bind the group together. The subordinates showed their undivided loyalty towards their superiors because of the favours they received from them, whilst they supported and cared for other members within the group as they care for themselves. Reading the double love commandment of Matthew 22:34−40 from this perspective reveals significant aspects of the community’s identity with regard to their commitment to God and their view of their neighbours. Die Dubbele Liefdesgebod. Die Matteusevangelie is gedurende ’n periode van konfliktussen die Matteusgemeenskap en mede-Jode geskryf met die Fariseërs in ’n leidende rol. Die Matteusgemeenskap het van dieselfde geskrifte as hulle opponente gebruik gemaak. Hulle was steeds aan die Torah lojaal, maar het ’n unieke interpretasie daarvan gehuldig, gebaseer op die onderrig van Jesus. In hierdie artikel word die vorming van die Matteusgemeenskap ondersoek met inagneming van die Mediterreense beskouing van die groepgeoriënteerde gemeenskappe wat tipies van die eerste eeu was. So ’n groep het aan individue ’n bewustheid van eie waarde verskaf te midde van ’n interaktiewe ondersteuningsisteem waarin liefde as samebindende faktor gefunksioneer het. Ondergeskiktes het onverdeelde lojaliteit teenoor hulle meerderes betoon vanweë die gunste wat hulle van die meerderes geniet het

  3. Alignment in double capture processes

    Energy Technology Data Exchange (ETDEWEB)

    Moretto-Capelle, P.; Benhenni, M.; Bordenave-Montesquieu, A.; Benoit-Cattin, P.; Gleizes, A. (IRSAMC, URA CNRS 770, Univ. Paul Sabatier, 118 rte de Narbonne, 31062 Toulouse Cedex (France))

    1993-06-05

    The electron spectra emitted when a double capture occurs in N[sup 7+]+He and Ne[sup 8+]+He systems at 10 qkeV collisional energy, allow us to determine the angular distributions of the 3[ell]3[ell] [prime] lines through a special spectra fitting procedure which includes interferences between neighbouring states. It is found that the doubly excited states populated in double capture processes are generally aligned.

  4. Global effects of double layers

    International Nuclear Information System (INIS)

    Raad, M.A.

    1984-12-01

    Locally the formation of an electrostatic double layer in a current carrying plasma leads to a direct acceleration of particles which may penetrate far into the surrounding medium. The potential across the double layer, giving this acceleration, must be maintained by the external system and is a basic parameter for the local to global coupling. The double layer potential is associated with an electric field parallel to the magnetic field. In general this leads to a magnetohydrodynamic relaxation of the surrounding medium providing the influx of energy which is dissipated by the double layer. The double layer potential is limited as is the maximum possible rate of energy influx. If the global response of the external medium can be represented by an external circuit and if an equivalent circuit element can be found to represent the double layer, for example a negative resistance for intermediate time scales, it is possible to give a description of the dynamics and stability of the whole system. (Author)

  5. Double layers above the aurora

    International Nuclear Information System (INIS)

    Temerin, M.; Mozer, F.S.

    1987-01-01

    Two different kinds of double layers were found in association with auroral precipitation. One of these is the so-called electrostatic shock, which is oriented at an oblique angle to the magnetic field in such a way that the perpendicular electric field is much larger than the parallel electric field. This type of double layer is often found at the edges of regions of upflowing ion beams and the direction of the electric fields in the shock points toward the ion beam. The potential drop through the shock can be several kV and is comparable to the total potential needed to produce auroral acceleration. Instabilities associated with the shock may generate obliquely propagating Alfven waves, which may accelerate electrons to produce flickering auroras. The flickering aurora provides evidence that the electrostatic shock may have large temporal fluctuations. The other kind of double layer is the small-amplitude double layer found in regions of upward flowing in beams, often in association with electrostatic ion cyclotron waves. The parallel and perpendicular electric fields in these structures are comparable in magnitude. The associated potentials are a few eV. Since many such double layers are found in regions of upward flowing ion beams, the combined potential drop through a set of these double layers can be substantial

  6. Alternate Double Single Track Lines

    Energy Technology Data Exchange (ETDEWEB)

    Moraga Contreras, P.; Grande Andrade, Z.; Castillo Ron, E.

    2016-07-01

    The paper discusses the advantages and shortcomings of alternate double single track (ADST) lines with respect to double track lines for high speed lines. ADST lines consists of sequences of double and single track segments optimally selected in order to reduce the construction and maintenance costs of railway lines and to optimize the timetables used to satisfy a given demand. The single tracks are selected to coincide with expensive segments (tunnels and viaducts) and the double tracks are chosen to coincide with flat areas and only where they are necessary. At the same time, departure times are adjusted for trains to cross at the cheap double track segments. This alternative can be used for new lines and also for existing conventional lines where some new tracks are to be constructed to reduce travel time (increase speed). The ADST proposal is illustrated with some examples of both types (new lines and where conventional lines exist), including the Palencia-Santander, the Santiago-Valparaíso-Viña del Mar and the Dublin-Belfast lines, where very important reductions (90 %) are obtained, especially where a railway infrastructure already exist. (Author)

  7. On the physics of relativistic double layers

    International Nuclear Information System (INIS)

    Carlqvist, P.

    1982-06-01

    A model of a strong, time-independent, and relativistic double layer is studied. Besides double layers having the electric field parallel to the current the model also describes a certain type of oblique double layers. The 'Langmuir condition' (ratio of ion current density to electron current density) as well as an expression for the potential drop of the double layer are derived. Furthermore, the distribution of charged particles, electric field, and potential within the double layer are clarified and discussed. It is found that the properties of relativistic double layers differ substantially from the properties of corresponding non-relativistic double layers. (Author)

  8. Principales resultados del sistema cubano de Farmacovigilancia en el año 2004 Main results of the Cuban system of pharmacological surveillance system in 2004

    Directory of Open Access Journals (Sweden)

    Francisco Debesa García

    2005-12-01

    Full Text Available Se describen los principales resultados alcanzados por el sistema cubano de Farmacovigilancia en el 2004. Durante 12 meses, los casos se identificaron mediante el sistema de notificación voluntaria de sospecha de reacciones adversas a medicamentos. Se recibieron en la Unidad Nacional Coordinadora de Farmacovigilancia 7 063 notificaciones de reacciones adversas medicamentosas (RAM que contenían 13 500 a razón de 1,9 RAM por notificación, de ellas 3 185 fueron “importantes” para el 35,1 % (según criterios para determinar RAM importantes de la UCNFv , en las Normas y procedimientos de trabajo del sistema cubano de Farmacovigilancia. La tasa de notificación anual fue de 628 notificaciones por millón de habitantes. El 64,6 % de las RAM correspondió al sexo femenino y el 35,4 % al masculino. En cuanto al nivel de asistencia, la atención primaria fue la que más notificó con 85 %. La relación de reacciones leves con respecto a las moderadas y graves fue de 48,3/51,4 %, que continúa con un balance muy bueno en relación con el reporte por severidad. Se reportaron 23 reacciones con desenlace fatal, para el 0,3 %. A pesar de la disminución en cuanto al número de notificaciones recibidas en nuestro unidad, con respecto al año anterior, aún se encuentra entre las tasas de notificación más altas de los países miembros del sistema internacional de monitoreo de RAM; por otra parte, dada la calidad de estas permitieron cuantificar y caracterizar las RAM, teniendo además un gran valor para generar alertas y vigilar la seguridad de los medicamentos que circulan en nuestro país.The main results achieved by the Cuban Pharmacological Surveillance System in the year 2004 were described. During these 12 months, the cases were identified by the voluntary notification system of suspected adverse reactions to drugs. The National Coordinating Unit of Pharmacological Surveillance (NCUPs received 7 063 notifications that included 13 500 adverse drug

  9. Historia cronológica de la Revista Cubana de Estomatología desde su fundación The History of the Cuban Journal of Stomatology from its foundation

    Directory of Open Access Journals (Sweden)

    Amado Rodríguez Calzadilla

    2010-12-01

    Full Text Available La Revista Cubana de Estomatología, desde su fundación en el mes de junio del año 1964, ha permitido a los estomatólogos cubanos y de otros países divulgar los resultados de sus investigaciones. Con el objetivo de ofrecer información acerca de la evolución histórica del Comité Editorial de la Revista Cubana de Estomatología y brindar una modesta contribución a la Historia de la Estomatología en Cuba, se describen en orden cronológico, los diferentes comités editoriales que han transitado por la revista desde 1964 hasta el año 2009. Se reconoce el esfuerzo realizado por los profesionales de la especialidad que dedicaron parte de su tiempo y conocimientos en mantener activa la revista.The Cuban Journal of Stomatology, from its foundation in June, 1964, allows to Cuban stomatologists and from other countries to spread the results of its researches. The aim of present paper is to offer information on the historical course of Editorial Committee of the Cuban Journal of Stomatology and to make a modest contribution to History of Stomatology in Cuba and to describe a chronological order of the different editorial committees that to went by the journal from 1964 to 2009. It is recognized the effort made for specialty professionals who devoted part of their time and the knowledges to maintain active the journal.

  10. Void Double Hull Space Type VLCC

    OpenAIRE

    Takehiko, Akiba; Kimio, Kitano; Yutaka, Yamauchi; Hisashi, Ito; Hiroyuki, Tsukuda; Hirohiko, Emi; Atsushi, Kumano; NKK Corporation; NKK Corporation; NKK Corporation; NKK Corporation; NKK Corporation; Research Institute; Research Institute

    1996-01-01

    Double hull structures for tankers became obligatory in 1993 in response to the ever present problem of oil spills. Use of the double hull space as ballast water tanks has resulted in new problems-an increased area of hull requiring maintenance, and the need for inspections and maintenance work in the cramped and unfavorable environment of the double hull spaces. As a solution to these problems, the authors have developed a new concept for double hulled tankers which involves the double hull ...

  11. Rentabilidad de la gestión del mantenimiento en los centrales azucareros cubanos. // Profitability of maintenance management in Cuban sugar cane factories.

    Directory of Open Access Journals (Sweden)

    C. Batista Rodríguez

    2001-10-01

    Full Text Available Para evaluar de forma acertada la eficiencia de la gestión de mantenimiento en un central azucarero y a su personaldirectivo es necesario disponer de indicadores cuantitativos que reflejen los resultados y la evolución integral del trabajotécnico-organizativo y económico de la actividad. Actualmente existen gran cantidad de indicadores, pero se adolece de lano existencia de un indicador generalizador de la eficiencia de la gestión del mantenimiento, por lo cual es difícil valorarcorrectamente los resultados y la evolución integral de la actividad.En este trabajo se muestra la posibilidad de evaluar de forma integral la eficiencia de la gestión del mantenimiento en loscentrales azucareros cubanos, con el calculo del indicador Rentabilidad de la gestión del mantenimiento (Rgm.Palabras claves: Rentabilidad, gestión de mantenimiento, centrales azucareros, indicador de rentabilid__________________________________________________________________AbstractIn order to evaluate in a proper manner the efficiency of maintenance management in sugar cane factories and its directivepersonnel, it is necessary to have quantitative indicators that reflect the results and integral evolution of the technicalorganizationaland economic work of the activity. At the present a great amount of indicators exists, but it is sympathizedfrom the non-existence of a generalizing indicator of the maintenance management efficiency, thus it is difficult tocorrectly validate the results and integral evolution of the activity. In this paper is expose the possibility of integralevaluation of the maintenance management efficiency in Cuban sugar cane factories, with the computation of the indicatorof maintenance management profitability (Rgm.Key words: Profitability, maintenance management, sugar cane factories, profitability indicator.

  12. Radiological protection in the Cuban radiotherapy services and Nuclear Medicine by the light of the national requirements of the national normative

    International Nuclear Information System (INIS)

    Dumenigo Gonzalez, Cruz; De la Fuente Puch, Andres; Quevedo Garcia, Jose R.; Diaz Guerra, Pedro Ibrahin; Lopez Forteza; Yamil

    2003-01-01

    With the approval, recently, of the Regulation Basic Norms of Radiological Security and the Guide for the Implementation of the Regulations of Security in the Practice of the Radiotherapy and it Guides for the Implementation of the Regulations of Security in the Practice of the Nuclear Medicine is completed the essential normative base that governs the realization of these practices in the Republic of Cuba. The principles of this normative one are in agreement with those recommendations of the International Organism of Atomic Energy, the World Organization of the Health and particularly with the good ones practical international in the practice of the Radiotherapy. In order to a politics of gradual implementation that he/she takes in consideration the to settle down preparation that really exists in the country to complete the requirements that settle down in this normative one, the Cuban Regulatory Authority (CNSN) carried out a study of applicability whose results are presented work presently. Through the evaluations of the documentation of the radiotherapy facilities and medicine nuclear of the country, as well as of the inspections and the mensurations carried out to the same ones they are evaluated those not existent conformities with regard to the requirements of the normative one, are categorized the same ones in function of their importance and a group of possible solutions is recommended to the problematic existent. Finally the authors conclude that, in spite of the non conformities identified, they don't exist impediments that from the point of view of the radiological protection commit the execution of the practice

  13. Double photoionisation spectra of molecules

    CERN Document Server

    Eland, John

    2017-01-01

    This book contains spectra of the doubly charged positive ions (dications) of some 75 molecules, including the major constituents of terrestrial and planetary atmospheres and prototypes of major chemical groups. It is intended to be a new resource for research in all areas of molecular spectroscopy involving high energy environments, both terrestrial and extra-terrestrial. All the spectra have been produced by photoionisation using laboratory lamps or synchrotron radiation and have been measured using the magnetic bottle time-of-flight technique by coincidence detection of correlated electron pairs. Full references to published work on the same species are given, though for several molecules these are the first published spectra. Double ionisation energies are listed and discussed in relation to the molecular electronic structure of the molecules. A full introduction to the field of molecular double ionisation is included and the mechanisms by which double photoionisation can occur are examined in detail. A p...

  14. "Socialismo, Cooperativismo y Derecho. Dialéctica necesaria para la actualización del modelo económico cubano" (Socialism, Cooperativism and Law. Dialectics necessary to update the Cuban economic model

    Directory of Open Access Journals (Sweden)

    Orestes Rodríguez Musa

    2012-01-01

    Full Text Available The aim of this study is to assess the legal perspectives of the cooperative in the restructuring of the Cuban socialist economic model. For this purpose it will start with analyzing the thought of the classics of Marxism around cooperatives, to ponder lessons that have full effect. In a second part it will value the common features of the relation State-law-and cooperative in the models attached —as the Cuban— to socialism real or classic. It concludes with constructive comments to the political Guidelines that will guide the expansion and legal renewal of the cooperative sector in Cuba.

  15. Producción de Moina sp alimentada con Chlorella spp. cultivada con riles orgánicos de la industria pesquera cubana - Production of Moina sp fed with Chlorella spp. developed in organic waste waters from Cuban fishing industry

    OpenAIRE

    Romero Teresita de J; Manso Belkis; López Rafael; Martínez Fidel; Moreno Madelaine

    2010-01-01

    ResumenEl incremento importante de la acuicultura cubana y la carencia de algunos fertilizantes usados para fines de cultivo fitoplantónico, que finalmente pasan a nutrir especies zooplanctónicas como el cladócero Moina sp, ha motivado el presente estudio, referido al cultivo de dicha especie con la microalga Chlorella spp. desarrollada previamente con riles orgánicos de la industria pesquera.SummarySubstantial increase of Cuban acuiculture and deficiency of some fertilizers used for the phyt...

  16. Cuban experience in verification of the execution of the safety requirements during the transport of radioactive materials; Experiencia cubana en verificacion del cumplimento de los requerimientos de seguridad durante el transporte de materiales radiactivos

    Energy Technology Data Exchange (ETDEWEB)

    Quevedo Garcia, J.R.; Lopez Forteza, Y. [Centro Nacional de Seguridad Nuclear, La Habana (Cuba)

    2001-07-01

    The Cuban Regulatory Authority has paid special attention to the verification of the execution of the safety requirements during the transport of radioactive material in the country. With this purpose, the Authority has followed a consequent policy based on supplementary demands to those collections in the juridical mark settled down in 1987 in the sphere of transport of radioactive substances. In the work the technical approaches are exposed kept in mind when establishing the one referred politics, the current situation is characterized, the results are evaluated obtained in correspondence with the pursued objectives and the essential aspects are exposed to keep in mind for the adopted politics ulterior development. (author)

  17. Metal–organic frameworks assembled from lanthanide and 2,5-pyridinedicaboxylate with cubane-like [Ln{sub 4}(OH){sub 4}] building units

    Energy Technology Data Exchange (ETDEWEB)

    Abdelbaky, Mohammed S.M. [Departamentos de Química Física y Analítica y Química Orgánica e Inorgánica, University of Oviedo—CINN, Oviedo 33006 (Spain); Amghouz, Zakariae, E-mail: amghouz.uo@uniovi.es [Departamentos de Química Física y Analítica y Química Orgánica e Inorgánica, University of Oviedo—CINN, Oviedo 33006 (Spain); Servicios Científico-Técnicos, University of Oviedo—CINN, Oviedo 33006 (Spain); Fernández-Zapico, Eva; García-Granda, Santiago; García, José R. [Departamentos de Química Física y Analítica y Química Orgánica e Inorgánica, University of Oviedo—CINN, Oviedo 33006 (Spain)

    2015-09-15

    Lanthanide–organic frameworks based on 2,5-pyridinedicaboxylate (25p) ligand, formulated as [Yb{sub 4}(OH){sub 4}(25p){sub 4}(H{sub 2}O){sub 3}]·H{sub 2}O (25pYb), [Y{sub 4}(OH){sub 4}(25p){sub 4}(H{sub 2}O){sub 3}]·H{sub 2}O (25pY-1) and [Y{sub 6}(OH){sub 8}(25p){sub 5}(H{sub 2}O){sub 2}] (25pY-2), have been obtained as single phases under hydrothermal conditions. 25pYb and 25pY-1 are isostructural, and crystallize in the triclinic space group, P-1, with a=8.6075(5) Å, b=14.8478(7) Å, c=15.9164(9) Å, α=86.277(4)°, β=80.196(5)°, γ=81.785(4)°, and a=8.7166(6) Å, b=14.966(1) Å, c=15.966(1) Å, α=86.260(6)°, β=80.036(6)°, γ=81.599(6)°, respectively. 25pY-2 crystallizes in the monoclinic space group, P2{sub 1}/c, with a=24.9117(17) Å, b=13.7340(8) Å, c=14.3385(10) Å, β=100.551(7)°. 25pYb and 25pY-2 have been structurally characterized by single-crystal X-ray diffraction. The 25pYb structure is based on tetranuclear cubane-like [Yb{sub 4}(OH){sub 4}]{sup 8+} clusters, which are interconnected to eight neighbouring clusters through teen surrounding 25p ligands leading to neutral 3D framework, while the structure of 25pY-2 is based on two independent cuban-like [Y{sub 4}(OH){sub 4}]{sup 8+} clusters, which are joined together through Y1 cation leading to the formation of hexanuclear [Y{sub 6}(OH){sub 8}]{sup 10+} clusters, which in turn are joined via Y2 cation resulting in infinite inorganic chain extending along c-axis, and each chain is interconnected to six adjacent chains through 25p ligands leading finally to 3D framework. The luminescence properties of Eu{sup 3+} and Tb{sup 3+} doped 25pY-1 and 25pY-2 compounds have also been investigated. All materials has been characterized by powder X-ray diffraction, thermal analyses (TG–SDTA–MS), FTIR spectroscopy, C–H–N elemental analysis, scanning electron microscopy (SEM-EDX), and powder X-ray thermodiffraction. - Graphical abstract: Nowadays, lanthanide–organic frameworks (LOFs) attract

  18. Eight Arguments against Double Effect

    DEFF Research Database (Denmark)

    Di Nucci, Ezio

    I offer eight arguments against the Doctrine of Double Effect, a normative principle according to which in pursuing the good it is sometimes morally permissible to bring about some evil as a side-effect or merely foreseen consequence: the same evil would not be morally justified as an intended...

  19. A Double-Minded Fractal

    Science.gov (United States)

    Simoson, Andrew J.

    2009-01-01

    This article presents a fun activity of generating a double-minded fractal image for a linear algebra class once the idea of rotation and scaling matrices are introduced. In particular the fractal flip-flops between two words, depending on the level at which the image is viewed. (Contains 5 figures.)

  20. Magnetoresistance stories of double perovskites

    Indian Academy of Sciences (India)

    out. Keywords. Tunnelling magnetoresistance; tunnel boundary; disorder; double perovskite. PACS Nos 75.47.−m; 73.40.Gk; 72.80.Ga. 1. Introduction. Magnetoresistance (MR) is the property of a material to change the value of its electri- cal resistance when an external magnetic field is applied. This phenomenon was first.

  1. Double Coffee opens in China

    Index Scriptorium Estoniae

    2009-01-01

    Läti suursaadik Ingrida Levrence avas esimese Double Coffee kohviku Hiina pealinnas Pekingi südames. Rahvusvaheline kohvikukett kavatseb laieneda mõne kohviku võrra igal aastal. Seni tegutsetakse Lätis, Eestis, Leedus, Ukrainas ja Valgevenes

  2. Constraining neutrinoless double beta decay

    International Nuclear Information System (INIS)

    Dorame, L.; Meloni, D.; Morisi, S.; Peinado, E.; Valle, J.W.F.

    2012-01-01

    A class of discrete flavor-symmetry-based models predicts constrained neutrino mass matrix schemes that lead to specific neutrino mass sum-rules (MSR). We show how these theories may constrain the absolute scale of neutrino mass, leading in most of the cases to a lower bound on the neutrinoless double beta decay effective amplitude.

  3. Double contrast gastrography in dogs.

    Science.gov (United States)

    Kumar, R; Peshin, P K; Nigam, J M

    1981-09-01

    For experimental evaluation of double contrast gastrography in 9 dogs, sodium iothalamate and air were used for positive and negative contrast, respectively, to delineate the gastric mucosa. The technic was simple and reasonably safe. Results were satisfactory when the stomach was empty, and appropriate volumes of contrast materials were evenly distributed.

  4. Magnetoresistance stories of double perovskites

    Indian Academy of Sciences (India)

    Abstract. Tunnelling magnetoresistance (TMR) in polycrystalline double perovskites has been an important research topic for more than a decade now, where the nature of the insulating tunnel barrier is the core issue of debate. Other than the nonmagnetic grain boundaries as conventional tunnel barriers, intragrain ...

  5. Doubled-ended ceramic thyratron

    CERN Multimedia

    1974-01-01

    The double-ended ceramic thyratron CX 1171 B, with its coaxial voltage divider for the SPS. Such a switch, paralleled by three ignitrons in series forms the "thyragnitron" arrangement, and can switch 10 kA, 25 ms pulses, with very fast rise times.

  6. Magnetoresistance stories of double perovskites

    Indian Academy of Sciences (India)

    2015-05-28

    May 28, 2015 ... Tunnelling magnetoresistance (TMR) in polycrystalline double perovskites has been an important research topic for more than a decade now, where the nature of the insulating tunnel barrier is the core issue of debate. Other than the nonmagnetic grain boundaries as conventional tunnel barriers, intragrain ...

  7. Some theoretical aspects of electrostatic double layers

    International Nuclear Information System (INIS)

    Carlqvist, P.

    1978-11-01

    A review is presented of the main results of the theoretical work on electrostatic double layers. The general properties of double layers are first considered. Then the time-independent double layer is discussed. The discussion deals with the potential drop, the thickness, and some necessary criteria for the existence and stability of the layer. As a complement to the study of the timeindependent double layer a few remarks are also made upon the timedependent double layer. Finally the question of how double layers are formed and maintained is treated. Several possible formation mechanisms are considered. (author)

  8. Pathways to doubled haploidy: chromosome doubling during androgenesis.

    Science.gov (United States)

    Seguí-Simarro, J M; Nuez, F

    2008-01-01

    Production of doubled haploid (DH) plants through androgenesis induction is a promising and convenient alternative to conventional selfing techniques for the generation of pure lines for breeding programs. This process comprises two main steps: induction of androgenesis and duplication of the haploid genome. Such duplication is sometimes indirectly induced by the treatments used to promote androgenic development. But usually, an additional step of direct chromosome doubling must be included in the protocol. Duplication of the haploid genome of androgenic individuals has been thought to occur through three mechanisms: endoreduplication, nuclear fusion and c-mitosis. In this review we will revise and analyze the evidences supporting each of the proposed mechanisms and their relevance during androgenesis induction, embryo/callus development and plant regeneration. Special attention will be devoted to nuclear fusion, whose evidences are accumulating in the last years. 2008 S. Karger AG, Basel

  9. THE ACADEMIC LEADERSHIP OF THE UNIVERSITY PROFESSOR IN ACCORDANCE TO THE PRESENT-DAY TRANSFORMATIONS IN THE HIGHER CUBAN EDUCATION / EL LIDERAZGO ACADÉMICO DEL PROFESOR UNIVERSITARIO ANTE LAS ACTUALES TRANSFORMACIONES EN LA EDUCACIÓN

    Directory of Open Access Journals (Sweden)

    Georgina Marcia Soto Senra

    2011-01-01

    Full Text Available The phenomena of present-day dynamite the development of societies; which cannot exist at the edge of technical and scientific advances. This revolute the continuous scientific task, in a complex world of social relations, where many people have taken as paradigm, the construction of a better world, more fare and well balanced. The Cuban education is based more than ever in this paradigm. The education, as a fundamental way to socialize the subject, goes through different levels up to a moment of preparation to fulfill from the professional point of view, a social determined commission. One of the indicators of quality for the university measurement is constituted by its professors. Their function in their teaching activity is determined in a great extent by the leadership that plays within the formative process of the learners. Hence, the general objective of this investigation is: to value the role of the university professors in accordance to the present-day transformations in the Cuban higher education.

  10. Approaches to Climate Change & Health in Cuba: Guillermo Mesa MD MPhil, Director, Disasters & Health, National School of Public Health. Paulo Ortiz MS PhD, Senior Researcher, Climate Center, Cuban Meteorology Institute.

    Science.gov (United States)

    Mesa, Guillermo; Ortiz, Paulo; Gorry, Conner

    2015-04-01

    The US National Institutes of Health predict climate change will cause an additional 250,000 deaths between 2030 and 2050, with damages to health costing US$2-$4 billion by 2030. Although much debate still surrounds climate change, island ecosystems-such as Cuba's-in the developing world are arguably among the most vulnerable contexts in which to confront climate variability. Beginning in the 1990s, Cuba launched research to develop the evidence base, set policy priorities, and design mitigation and adaptation actions specifically to address climate change and its effects on health. Two researchers at the forefront of this interdisciplinary, intersectoral effort are epidemiologist Dr Guillermo Mesa, who directed design and implementation of the nationwide strategy for disaster risk reduction in the Cuban public health system as founding director of the Latin American Center for Disaster Medicine (CLAMED) and now heads the Disasters and Health department at the National School of Public Health; and Dr Paulo Ortiz, a biostatistician and economist at the Cuban Meteorology Institute's Climate Center (CENCLIM), who leads the research on Cuba's Climate and Health project and is advisor on climate change and health for the UN Economic Commission for Latin America and the Caribbean (ECLAC).

  11. Lightweight Double Neutron Star Found

    Science.gov (United States)

    Kohler, Susanna

    2018-02-01

    More than forty years after the first discovery of a double neutron star, we still havent found many others but a new survey is working to change that.The Hunt for PairsThe observed shift in the Hulse-Taylor binarys orbital period over time as it loses energy to gravitational-wave emission. [Weisberg Taylor, 2004]In 1974, Russell Hulse and Joseph Taylor discovered the first double neutron star: two compact objects locked in a close orbit about each other. Hulse and Taylors measurements of this binarys decaying orbit over subsequent years led to a Nobel prize and the first clear evidence of gravitational waves carrying energy and angular momentum away from massive binaries.Forty years later, we have since confirmed the existence of gravitational waves directly with the Laser Interferometer Gravitational-Wave Observatory (LIGO). Nonetheless, finding and studying pre-merger neutron-star binaries remains a top priority. Observing such systems before they merge reveals crucial information about late-stage stellar evolution, binary interactions, and the types of gravitational-wave signals we expect to find with current and future observatories.Since the Hulse-Taylor binary, weve found a total of 16 additional double neutron-star systems which represents only a tiny fraction of the more than 2,600 pulsars currently known. Recently, however, a large number of pulsar surveys are turning their eyes toward the sky, with a focus on finding more double neutron stars and at least one of them has had success.The pulse profile for PSR J1411+2551 at 327 MHz. [Martinez et al. 2017]A Low-Mass DoubleConducted with the 1,000-foot Arecibo radio telescope in Puerto Rico, the Arecibo 327 MHz Drift Pulsar Survey has enabled the recent discovery of dozens of pulsars and transients. Among them, as reported by Jose Martinez (Max Planck Institute for Radio Astronomy) and coauthors in a recent publication, is PSR J1411+2551: a new double neutron star with one of the lowest masses ever measured

  12. Monocular Elevation Deficiency - Double Elevator Palsy

    Science.gov (United States)

    ... Español Condiciones Chinese Conditions Monocular Elevation Deficiency/ Double Elevator Palsy En Español Read in Chinese What is monocular elevation deficiency (Double Elevator Palsy)? Monocular Elevation Deficiency, also known by the ...

  13. The Double R Theory of Language Comprehension

    National Research Council Canada - National Science Library

    Ball, Jerry

    2004-01-01

    ... (also known as Cognitive Semantics). This technical report explicates the basic principles and assumptions of Double R Grammar and compares Double R Grammar to Chomsky's X-Bar Theory as well as Langacker's Cognitive Linguistic...

  14. Principales resultados del sistema cubano de Farmacovigilancia en el año 2003 Main results of the Cuban System of Drug Surveillance in 2003

    Directory of Open Access Journals (Sweden)

    Francisco Debesa García

    2004-12-01

    Full Text Available Se describe el funcionamiento y principales resultados del sistema cubano de Farmacovigilancia durante el 2003 en todos los niveles de salud de Cuba. Durante 12 meses, los casos se identificaron mediante el sistema de notificación voluntaria de sospecha de reacciones adversas a medicamentos. Se recibieron en la Unidad Nacional Coordinadora de Farmacovilancia 12 601 notificaciones de reacciones adversas medicamentosas (RAM que contenían 25 348 sospechas de RAM, para una tasa de notificación de 1 119 reportes x 1 000 000 de habitantes. El 66 % de las RAM correspondió al sexo femenino y el 34 % al masculino. En cuanto al nivel de asistencia, la atención primaria es la que más notifica con 83,5 %. Fueron resultados alentadores que en este año la relación de reacciones leves con respecto a las moderadas y graves resultó del 55,3/44,7 %, que continúa con un balance bastante bueno en relación con el reporte por severidad. Se reportaron 54 reacciones con desenlace fatal, para el 0,2 %. Las notificaciones recibidas en nuestro unidad permitieron cuantificar y caracterizar las RAM, teniendo además un gran valor para generar alertas y vigilar la seguridad de los medicamentos que circulan en nuestro país.The functioning and the main results of the Cuban Drug Surveillance System at all the health levels, in 2003, are described. During 12 months, the cases were identified by the volunteer notification system of suspicion of adverse drug reactions. 12 601 notifications of adverse drug reactions (DAR containing 25 348 DAR suspicions were received at the National Coordinating Unit of Drug Surveillance for a notification rate of 1 119 reports x 1 000 000 inhabitants. 66 % of the ADRs corresponded to females and 34 % to males. As regards the assistance level, the primary care level notifies the most with 83.5 %. It was considered as encouraging the fact that the relation of mild adverse reactions with respect to the moderate and severe was 55.3 %/44

  15. Impacto de la informatización en la sociedad y estomatología cubanas Impact of information on Cuban society and Stomatology

    Directory of Open Access Journals (Sweden)

    Damaris González Valdés

    2007-06-01

    Full Text Available La revolución científico-técnica, tanto por su influencia sobre el desarrollo social en general, como sobre el desarrollo de las ciencias médicas, ha representado una posibilidad extraordinaria de progreso para el proceso salud-enfermedad en el hombre. Cuba ha identificado desde muy temprano la conveniencia y necesidad de dominar e introducir en la práctica social las tecnologías de la Información y las comunicaciones y lograr una cultura digital como una de las características imprescindibles del hombre nuevo, lo que facilitaría a nuestra sociedad acercarse más hacia el objetivo de un desarrollo sostenible. Estas tecnologías se han desarrollado en la esfera de la Salud Pública y la Estomatología. El objetivo de nuestro trabajo es describir el impacto que ha tenido la informatización tanto en la sociedad cubana como en el campo de la Estomatología, mediante una revisión bibliográfica actualizada del tema, y se concluye que resulta indiscutible el beneficio que trae al hombre el uso de esta, así como su uso en la formación, desarrollo, actualización, comunicación, e investigación en el campo de la estomatología, lo que permite al sistema de salud disponer de una información oportuna, completa y válida para resolver problemas de salud.Scientific-technical revolution, due to its influence on social development in general, or on medical sciences development, has represented an extraordinary possibility of advance for health-disease process in man. From early times Cuba has identified convenience and need of to domains and to introduces in social practice, information and communications technologies, and to achieves a digital culture as one of the essential features of new man, allowing that our society may to approach more towards a goal of a sustained development. These technologies has been developed within sphere of Public Health and Stomatology. Aim of our paper is to describe impact of information on Cuban society and

  16. La Gestión Documental y su Impacto en el Sector Empresarial Cubano (Document Management and its Impact on Cuban Enterprise Sector

    Directory of Open Access Journals (Sweden)

    María de los Ángeles Ruiz González

    2014-04-01

    Full Text Available Resumen En el presente artículo se aborda la tendencia actual de los sistemas de gestión documental como nuevos paradigmas de gestión organizacional. Se realiza un énfasis en el sector empresarial cubano y el impacto de la gestión de información, documental y del conocimiento en los nuevos escenarios del sector empresarial cubano en las actuales condiciones de actualización del Modelo Económico. Se destaca a su vez el trabajo por proyectos que se establece entre las universidades y el sector empresarial. Se exponen algunos resultados derivados del diagnóstico de los subsistemas de información, documentación y conocimiento, aplicadas en las Unidades Docentes pertenecientes al Grupo Empresarial en Perfeccionamiento, aportando sugerencias y buenas prácticas, que permitan retroalimentar a las organizaciones en el uso de metodologías, herramientas y tecnologías basadas en el acceso abierto que permita apoyar a las empresas en el cumplimiento de las resoluciones y decretos ley vigentes en el país; así como identificar los problemas que afectan al subsistema de gestión de información y documentación, elementos claves que constituyen factores dinamizadores en el éxito empresarial. Abstract This paper studies current trend in document management systems as new paradigms of organizational management. Special emphasis is placed on the impact of information, document and knowledge management in the new scenarios of Cuban business given the current process of updating the economic model. The importance of working on projects between universities and business is also emphasized. This paper exposes some results from the diagnostic of the following subsystems: information, documentation and knowledge. This analysis was applied to teaching units belonging to the Business Group under Improvement. Suggestions and good practices were providing to organizations for feedback organizations in the use of methodologies and tools based on open access

  17. Minimal Doubling and Point Splitting

    Energy Technology Data Exchange (ETDEWEB)

    Creutz, M.

    2010-06-14

    Minimally-doubled chiral fermions have the unusual property of a single local field creating two fermionic species. Spreading the field over hypercubes allows construction of combinations that isolate specific modes. Combining these fields into bilinears produces meson fields of specific quantum numbers. Minimally-doubled fermion actions present the possibility of fast simulations while maintaining one exact chiral symmetry. They do, however, introduce some peculiar aspects. An explicit breaking of hyper-cubic symmetry allows additional counter-terms to appear in the renormalization. While a single field creates two different species, spreading this field over nearby sites allows isolation of specific states and the construction of physical meson operators. Finally, lattice artifacts break isospin and give two of the three pseudoscalar mesons an additional contribution to their mass. Depending on the sign of this mass splitting, one can either have a traditional Goldstone pseudoscalar meson or a parity breaking Aoki-like phase.

  18. International and domestic aspects of double taxation

    OpenAIRE

    Murgáčová, Miroslava

    2010-01-01

    International and local aspects of double taxation Abstract The purpose of my thesis is to analyze international double taxation taking into account both local legislation and international aspects. Double taxation is the situation, where the same income (or capital) is subject to the same tax more than once. Mostly, the international double taxation appears when the state of the source of income implies taxes on the income of the non-residents and the state of residence of the income receive...

  19. Somewhat Slightly Generalized Double Fuzzy Semicontinuous Functions

    Directory of Open Access Journals (Sweden)

    Fatimah M. Mohammed

    2014-01-01

    Full Text Available The aim of this paper is to introduce the concepts of somewhat slightly generalized double fuzzy semicontinuous functions and somewhat slightly generalized double fuzzy semiopen functions in double fuzzy topological spaces. Some interesting properties and characterizations of these functions are introduced and discussed. Furthermore, the relationships among the new concepts are discussed with some necessary examples.

  20. Double pot and double compartment: integrating two approaches to study nutrient uptake by arbuscular mycorrhizal fungi

    NARCIS (Netherlands)

    Cardoso, I.M.; Boddington, C.L.; Janssen, B.H.; Oenema, O.; Kuyper, T.W.

    2004-01-01

    The double compartment technique has been commonly used in studies on nutrient uptake by mycorrhizas whereas the double pot technique has been used to assess the nutritional stress of plants grown in different soils. A combination of the double pot and the double compartment technique was used as a

  1. Double Layer Dynamics in a Collisionless Magnetoplasma

    DEFF Research Database (Denmark)

    Iizuka, S.; Michelsen, Poul; Juul Rasmussen, Jens

    An experimental investigation of the dynamics of double layers is presented. The experiments are performed in a Q-machine plasma and the double layers are generated by applying a positive step potential to a cold collector plate terminating the plasma column. The double layer is created...... and propagation of a double layer. The period of the oscillations is determined by the propagation length of the double layer. The current is limited during the propagation of the double layer by a growing negative potential barrier formed on the low potential tail. Similar phenomena appear when a potential...... difference is applied between two plasmas in a Q-machine with two sources. In this case a stationary double layer forms in the plasma column, but the low potential tail is subject to "back and forth" oscillations leading to large amplitude current oscillations....

  2. Booster Double Harmonic Setup Notes

    Energy Technology Data Exchange (ETDEWEB)

    Gardner, C. J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2015-02-17

    The motivation behind implementing a booster double harmonic include the reduced transverse space charge force from a reduced peak beam current and reduced momentum spread of the beam, both of which can be achieved from flattening the RF bucket. RF capture and acceleration of polarized protons (PP) is first set up in the single harmonic mode with RF harmonic h=1. Once capture and acceleration have been set up in the single harmonic mode, the second harmonic system is brought on and programmed to operate in concert with the single harmonic system.

  3. Experiments on double beta decay

    Energy Technology Data Exchange (ETDEWEB)

    Busto, J. [Neuchatel Univ. (Switzerland). Inst. de Physique

    1996-11-01

    The Double Beta Decay, and especially ({beta}{beta}){sub 0{nu}} mode, is an excellent test of Standard Model as well as of neutrino physics. From experimental point of view, a very large number of different techniques are or have been used increasing the sensitivity of this experiments quite a lot (the factor of 10{sup 4} in the last 20 years). In future, in spite of several difficulties, the sensitivity would be increased further, keeping the interest of this very important process. (author) 4 figs., 5 tabs., 21 refs.

  4. Magnetogasdynamics of double radio sources

    International Nuclear Information System (INIS)

    Nepveu, M.

    1979-01-01

    The magnetogasdynamical behaviour of plasmoids moving through an ambient gas is investigated numerically with a two-dimensional code, based on the SHASTA scheme. The astrophysical importance of this study lies in the observed extended extragalactic radio sources. It is assumed that plasma clouds with cylinder symmetry are ejected from the nucleus of a galaxy. Their large-scale evolution in the intergalactic medium (IGM) is followed. The gas dynamics of an ejected cloud, the magnetogasdynamics of ejected clouds, the Christiansen-Pacholczyk-Scott picture for radio galaxies and the shear layers in double radio sources are studied. (Auth.)

  5. Rural energetic development: cuban experience

    International Nuclear Information System (INIS)

    Aguilera Barciela, M.

    1994-01-01

    The development of electro energetic national system in Cuba has been directed to the following objectives: to brake the rural population's exodus toward the cities, electrification of dairy farm, interconnection to the system electro energetic of all the sugar central production, these improves the rural population's conditions life

  6. The theory of double layers

    International Nuclear Information System (INIS)

    Schamel, H.

    1982-01-01

    Numerical and in some degree laboratory experiments suggest the existence of at least two different kinds of time-independent double layers: a strictly monotonic transition of the electrostatic potential and a transition accompanied by a negative spike at the low potential side (ion acoustic DL). An interpretation of both is presented in terms of analytic BGK modes. The first class of DLs commonly observed in voltage- or beam-driven plasmas needs for its existence beam-type distributions satisfying a Bohm criterion. The potential drop is at least of the order of Tsub(e), and stability arguments favour currents which satisfy the Langmuir condition. The second class found in current-driven plasma simulations is correlated with ion holes. This latter kind of nonlinear wave-solutions is linearly based on the slow ion-acoustic mode and exists due to a vortex-like distortion of the ion distribution in the thermal range. During the growth of an ion hole which is triggered by ion-acoustic fluctuations, the partial reflection of streaming electrons causes different plasma states on both sides of the potential dip and makes the ion hole asymmetric giving rise to an effective potential drop. This implies that the amplitude of this second type of double layers has an upper limit of 1-2 Tsub(e) and presumes a temperature ratio of Tsub(e)/Tsub(i) > or approximately 3 in coincidence with the numerical results. (Auth.)

  7. Challenges in Double Beta Decay

    Directory of Open Access Journals (Sweden)

    Oliviero Cremonesi

    2014-01-01

    Full Text Available In the past ten years, neutrino oscillation experiments have provided the incontrovertible evidence that neutrinos mix and have finite masses. These results represent the strongest demonstration that the electroweak Standard Model is incomplete and that new Physics beyond it must exist. In this scenario, a unique role is played by the Neutrinoless Double Beta Decay searches which can probe lepton number conservation and investigate the Dirac/Majorana nature of the neutrinos and their absolute mass scale (hierarchy problem with unprecedented sensitivity. Today Neutrinoless Double Beta Decay faces a new era where large-scale experiments with a sensitivity approaching the so-called degenerate-hierarchy region are nearly ready to start and where the challenge for the next future is the construction of detectors characterized by a tonne-scale size and an incredibly low background. A number of new proposed projects took up this challenge. These are based either on large expansions of the present experiments or on new ideas to improve the technical performance and/or reduce the background contributions. In this paper, a review of the most relevant ongoing experiments is given. The most relevant parameters contributing to the experimental sensitivity are discussed and a critical comparison of the future projects is proposed.

  8. Double Chooz: Results and Perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Franke, A.J., E-mail: ajfranke@nevis.columbia.edu [Columbia University, New York, New York 10027 (United States)

    2013-04-15

    The Double Chooz experiment has been observing ν{sup ¯}{sub e} from two reactor cores at the Chooz nuclear power station in Ardennes, France, with a single 10.3 m{sup 3} fiducial volume Gd-doped liquid scintillator detector at a flux-weighted average baseline of ∼1050 m. This article reviews results achieved with a detector live time of 227.93 days and exposure of 33.71 GW-ton-years. A total of 8,249 candidate ν{sup ¯}{sub e} events have been observed, compared to an expected 8,937 events in the null-oscillation case: this deficit is interpreted as evidence for ν{sup ¯}{sub e} disappearance. A fit to the observed neutrino rate and spectral shape gives a best-fit value of sin{sup 2}(2θ{sub 13})=0.109±0.030(stat.)±0.025(syst.) at a mass-squared splitting of Δm{sub 31}{sup 2}=2.32×10{sup −3} eV{sup 2}. The null-oscillation hypothesis is excluded by the data at 99.8% CL (2.9σ). The Double Chooz Near Detector is under construction, and analysis efforts to measure neutrino directionality, test Lorentz violation, and measure backgrounds in situ are underway.

  9. Double Chooz: Results and Perspectives

    Science.gov (United States)

    Franke, A. J.

    2013-04-01

    The Double Chooz experiment has been observing ν from two reactor cores at the Chooz nuclear power station in Ardennes, France, with a single 10.3 m fiducial volume Gd-doped liquid scintillator detector at a flux-weighted average baseline of ˜1050 m. This article reviews results achieved with a detector live time of 227.93 days and exposure of 33.71 GW-ton-years. A total of 8,249 candidate ν events have been observed, compared to an expected 8,937 events in the null-oscillation case: this deficit is interpreted as evidence for ν disappearance. A fit to the observed neutrino rate and spectral shape gives a best-fit value of sin2(2θ13)=0.109±0.030 (stat.)±0.025 (syst.) at a mass-squared splitting of Δm312=2.32×10-3 eV. The null-oscillation hypothesis is excluded by the data at 99.8% CL (2.9σ). The Double Chooz Near Detector is under construction, and analysis efforts to measure neutrino directionality, test Lorentz violation, and measure backgrounds in situ are underway.

  10. Factores asociados a etapas de cambio de comportamiento en fumadores cubanos Factors associated with stages of behavior change in Cuban smokers

    Directory of Open Access Journals (Sweden)

    Patricia Varona Pérez

    2003-08-01

    ó un nivel de significación de 0,05. RESULTADOS: Según los resultados, 46,4% de los fumadores encuestados estaban en la etapa de precontemplación o falta de motivación para el cambio; las mujeres se mostraron más dispuestas que los hombres a abandonar la adicción; mientras mayor era el nivel de instrucción, el deseo de abandonarla era mayor; las personas vinculadas al trabajo estuvieron más motivadas para el cambio. A medida que aumentaron la edad de inicio de fumar, la cantidad de cigarrillos consumidos diariamente y los intentos de dejar de fumar, disminuyó la probabilidad de estar en la etapa de precontemplación. CONCLUSIONES: La proporción de fumadores en etapa de contemplación ubica a Cuba en una situación favorable para el desarrollo de intervenciones preventivas antitabáquicas eficaces. La mayoría de los factores identificados (edad de inicio de la adicción, cantidad de cigarrillos consumidos a diario e intentos de abandonar el hábito pueden modificarse mediante acciones preventivas. La identificación de las etapas en el proceso de cambio y de los factores a ellas vinculados debe constituir una condición necesaria para el diseño y la aplicación de programas preventivos y de control del tabaquismo que aspiren a ser realmente eficaces.OBJECTIVE: To describe the distribution of Cuban smokers in the first two stages of the process of behavior change (precontemplation (that is, no desire to quit smoking and contemplation (thinking about quitting, the characteristics of these smokers, and the relationship between these characteristics and some variables of interest. METHODS: The First National Survey of Risk Factors and Chronic Non-communicable Disease Prevention Activities was carried out in Cuba in 1996. As a part of that Survey, a probability sample was selected using three-stage clustering, with stratification of the primary units, which were the census districts in the 14 provinces and 169 municipalities that make up the country. The census

  11. Dynamical Aspects of Electrostatic Double Layers

    DEFF Research Database (Denmark)

    Raadu, M.A.; Juul Rasmussen, J.

    1988-01-01

    Electrostatic double layers have been proposed as an acceleration mechanism in solar flares and other astrophysical objects. They have been extensively studied in the laboratory and by means of computer simulations. The theory of steady-state double layers implies several existence criteria......, in particular the Bohm criteria, restricting the conditions under which double layers may form. In the present paper several already published theoretical models of different types of double layers are discussed. It is shown that the existence conditions often imply current-driven instabilities in the ambient...... plasma, at least for strong double layers, and it is argued that such conditions must be used with care when applied to real plasmas. Laboratory double layers, and by implication those arising in astrophysical plasmas often produce instabilities in the surrounding plasma and are generally time...

  12. Double Dirac cones in phononic crystals

    KAUST Repository

    Li, Yan

    2014-07-07

    A double Dirac cone is realized at the center of the Brillouin zone of a two-dimensional phononic crystal (PC) consisting of a triangular array of core-shell-structure cylinders in water. The double Dirac cone is induced by the accidental degeneracy of two double-degenerate Bloch states. Using a perturbation method, we demonstrate that the double Dirac cone is composed of two identical and overlapping Dirac cones whose linear slopes can also be accurately predicted from the method. Because the double Dirac cone occurs at a relatively low frequency, a slab of the PC can be mapped onto a slab of zero refractive index material by using a standard retrieval method. Total transmission without phase change and energy tunneling at the double Dirac point frequency are unambiguously demonstrated by two examples. Potential applications can be expected in diverse fields such as acoustic wave manipulations and energy flow control.

  13. Diabetes-related mortality among Mexican Americans, Puerto Ricans, and Cuban Americans in the United States La mortalidad relacionada con la diabetes en mexicanoestadounidenses, puertorriqueños y cubanoestadounidenses en los Estados Unidos

    Directory of Open Access Journals (Sweden)

    Chrystal A. S. Smith

    2005-12-01

    Full Text Available OBJECTIVES: Hispanics are the most rapidly growing minority group in the United States, and Mexican Americans, Puerto Ricans and Cuban Americans are the three largest Hispanic subgroups. Among Hispanics, type 2 diabetes is the fifth leading cause of death. This paper examines diabetes-related mortality in Mexican Americans, Puerto Ricans, and Cuban Americans over 35 years of age in the United States during 1996 and 1997. METHODS: Using data from the National Vital Statistics System and the 1990 and 2000 censuses, we calculated age-adjusted and age-specific diabetes-related death rates for Mexican Americans, Puerto Ricans, and Cuban Americans over 35 years of age. Diabetes-related deaths were determined to be any death for which diabetes was coded as either the underlying or contributing cause of death. RESULTS: The diabetes-related mortality rate for Mexican Americans (251 per 100 000 and Puerto Ricans (204 deaths per 100 000 was twice as high as the diabetes-related mortality rate for Cuban Americans (101 deaths per 100 000. Cuban American decedents had the highest proportion of deaths with diabetes coded as the underlying cause of death (44%. After diabetes, heart disease (31% followed by cancer (8% and stroke (6% were the most frequent primary underlying causes of diabetes-related deaths in all three ethnic groups. CONCLUSION: Our analyses of these data demonstrate that diabetes-related mortality differed among Mexican Americans, Puerto Ricans and Cuban Americans more than 35 years of age in the United States in 1996 and 1997. Socioeconomic factors such as low educational attainment and low income may be factors that contributed to the disparities in these mortality rates for different subgroups. Further research is needed to update these findings and to investigate explanatory risk factors. Diversity among Hispanic subgroups has persisted in recent years and should be considered when health policies and services targeted at these populations

  14. The International Double Taxation – Avoiding Methods

    OpenAIRE

    Nicoleta Barbuta-Misu

    2009-01-01

    The paper presents the main causes that determine double taxation, its forms, i.e. the economicdouble taxation and the international legal double taxation, the need for eliminating the double taxation andavoiding methods. In the presentation of the avoidance methods have been used practical examples forcomparison of the tax advantages for income beneficiary between: the total exemption method andprogressive exemption method, on the one hand, and total crediting method and ordinary crediting m...

  15. Double Dens Invaginatus: Report of Three Cases

    OpenAIRE

    Zengin, A. Zeynep; Sumer, A. Pinar; Celenk, Peruze

    2009-01-01

    Dens invaginatus results from an infolding of the outer surface of a tooth. The clinical importance of dens invaginatus results from the risk of pulpal disease. So, all clinicians should be aware of this anomaly. The presence of double dens invaginatus is extremely rare. This article presents three cases of double dens invaginatus in permanent maxillary lateral incisors, one with preventive restoration on its palatal surface. They were classified as double dens invaginatus because of two enam...

  16. Fully double-logarithm-resummed cross sections

    Energy Technology Data Exchange (ETDEWEB)

    Albino, S.; Bolzoni, P.; Kniehl, B.A. [Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik; Kotikov, A. [Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik; Joint Inst. of Nuclear Research, Moscow (Russian Federation). Bogoliubov Lab. of Theoretical Physics

    2011-04-15

    We calculate the complete double logarithmic contribution to cross sections for semi-inclusive hadron production in the modified minimal-subtraction (MS) scheme by applying dimensional regularization to the double logarithm approximation. The full double logarithmic contribution to the coefficient functions for inclusive hadron production in electron-positron annihilation is obtained in this scheme for the first time. Our result agrees with all fixed order results in the literature, which extend to next-next-to-leading order. (orig.)

  17. Fully double-logarithm-resummed cross sections

    International Nuclear Information System (INIS)

    Albino, S.; Bolzoni, P.; Kniehl, B.A.; Kotikov, A.; Joint Inst. of Nuclear Research, Moscow

    2011-04-01

    We calculate the complete double logarithmic contribution to cross sections for semi-inclusive hadron production in the modified minimal-subtraction (MS) scheme by applying dimensional regularization to the double logarithm approximation. The full double logarithmic contribution to the coefficient functions for inclusive hadron production in electron-positron annihilation is obtained in this scheme for the first time. Our result agrees with all fixed order results in the literature, which extend to next-next-to-leading order. (orig.)

  18. A prospective, randomized, double blind controlled trial

    African Journals Online (AJOL)

    Effects of intravenous diclofenac on postoperative sore throat in patients undergoing laparoscopic surgery at Aga Khan University Hospital, Nairobi: A prospective, randomized, double blind controlled trial.

  19. Three Dimensional Double Layers in Magnetized Plasmas

    DEFF Research Database (Denmark)

    Jovanovic, D.; Lynov, Jens-Peter; Michelsen, Poul

    1982-01-01

    Experimental results are presented which demonstrate the formation of fully three dimensional double layers in a magnetized plasma. The measurements are performed in a magnetized stationary plasma column with radius 1.5 cm. Double layers are produced by introducing an electron beam with radius 0.......4 cm along the magnetic field from one end of the column. The voltage drop across the double layer is found to be determined by the energy of the incoming electron beam. In general we find that the width of the double layer along the external magnetic field is determined by plasma density and beam...

  20. Controlled double-slit electron diffraction

    International Nuclear Information System (INIS)

    Bach, Roger; Liou, Sy-Hwang; Batelaan, Herman; Pope, Damian

    2013-01-01

    Double-slit diffraction is a corner stone of quantum mechanics. It illustrates key features of quantum mechanics: interference and the particle-wave duality of matter. In 1965, Richard Feynman presented a thought experiment to show these features. Here we demonstrate the full realization of his famous thought experiment. By placing a movable mask in front of a double-slit to control the transmission through the individual slits, probability distributions for single- and double-slit arrangements were observed. Also, by recording single electron detection events diffracting through a double-slit, a diffraction pattern was built up from individual events. (paper)

  1. Double trouble at high density:

    DEFF Research Database (Denmark)

    Gergs, André; Palmqvist, Annemette; Preuss, Thomas G

    2014-01-01

    history. We explored how different mechanisms behind resource-related plasticity and crowding-related fitness act independently or together, using the water flea Daphnia magna as a case study. For testing hypotheses related to mechanisms of plasticity and crowding stress across different biological levels....... This study provides an example of how the integration of dynamic energy budget theory and individual-based modelling can facilitate the exploration of mechanisms behind the regulation of population size. Such understanding is important for assessment, management and the conservation of populations......Population size is often regulated by negative feedback between population density and individual fitness. At high population densities, animals run into double trouble: they might concurrently suffer from overexploitation of resources and also from negative interference among individuals...

  2. The double-diffusive modon

    Science.gov (United States)

    Radko, Timour

    Fully developed two-dimensional salt-finger convection is characterized by the appearance of coherent dipolar eddies which carry relatively fresh and cold fluid upward and salty and warm fluid downward. Such structures are prevalent in the regime in which density stratification is close to neutral and the salt-finger instability is extremely vigorous. The structure and translation velocities of modons are discussed in terms of the asymptotic expansion in which the background density ratio approaches unity. It is argued that the vertical salt flux is driven primarily by double-diffusive modons, which makes it possible to derive explicit expressions for the mixing rates of temperature and salinity as a function of their background gradients. Predictions of the proposed mixing model are successfully tested by direct numerical simulations.

  3. Double-yoke balanced compressor

    International Nuclear Information System (INIS)

    Durenec, P.

    1981-01-01

    A double-yoke balanced compressor for a cryogenic cooler that has only linear motion imparted to balanced piston and cylinder masses. A piston yoke is driven in the linear stroke direction by a piston axially offset crankshaft cam and a cylinder yoke is driven linearly by a cylinder axially offset crankshaft cam that is exactly offset 180 0 from the other cam. A large circular bushing in the compressor housing covers the entire outer cylinder head during linear operation to prevent blow by and to guide the cylinder linearly. The lower portion of the piston and cylinder connecting rods fit into linear guides that are further comprised of low molecular weight gas filled cavities to provide additional air bearing smoothness to the linear motion of the piston and cylinder

  4. Approximation by double Walsh polynomials

    Directory of Open Access Journals (Sweden)

    Ferenc Móricz

    1992-01-01

    Full Text Available We study the rate of approximation by rectangular partial sums, Cesàro means, and de la Vallée Poussin means of double Walsh-Fourier series of a function in a homogeneous Banach space X. In particular, X may be Lp(I2, where 1≦p<∞ and I2=[0,1×[0,1, or CW(I2, the latter being the collection of uniformly W-continuous functions on I2. We extend the results by Watari, Fine, Yano, Jastrebova, Bljumin, Esfahanizadeh and Siddiqi from univariate to multivariate cases. As by-products, we deduce sufficient conditions for convergence in Lp(I2-norm and uniform convergence on I2 as well as characterizations of Lipschitz classes of functions. At the end, we raise three problems.

  5. Double Helix Nodal Line Superconductor

    Science.gov (United States)

    Sun, Xiao-Qi; Lian, Biao; Zhang, Shou-Cheng

    2017-10-01

    Time-reversal invariant superconductors in three dimensions may contain nodal lines in the Brillouin zone, which behave as Wilson loops of 3D momentum-space Chern-Simons theory of the Berry connection. Here we study the conditions of realizing linked nodal lines (Wilson loops), which yield a topological contribution to the thermal magnetoelectric coefficient that is given by the Chern-Simons action. We find the essential conditions are the existence of torus or higher genus Fermi surfaces and spiral spin textures. We construct such a model with two torus Fermi surfaces, where a generic spin-dependent interaction leads to double-helix-like linked nodal lines as the superconductivity is developed.

  6. Double-double effect and its contribution to the lanthanide chemistry

    International Nuclear Information System (INIS)

    Fidelis, I.

    1973-01-01

    Different aspects of the double-double effect and its theoretical explanation have been discussed. Some new conclusions pertaining to the thermodynamics of complexation of lanthanides based on own experimental results and existing literature data have been presented. (author)

  7. Double-bootstrap methods that use a single double-bootstrap simulation

    OpenAIRE

    Chang, Jinyuan; Hall, Peter

    2014-01-01

    We show that, when the double bootstrap is used to improve performance of bootstrap methods for bias correction, techniques based on using a single double-bootstrap sample for each single-bootstrap sample can be particularly effective. In particular, they produce third-order accuracy for much less computational expense than is required by conventional double-bootstrap methods. However, this improved level of performance is not available for the single double-bootstrap methods that have been s...

  8. The concept of double inlet-double outlet right ventricle: a distinct congenital heart disease

    OpenAIRE

    Spadotto, V; Frescura, C; Ho, SY; Thiene, G

    2016-01-01

    The aim of this study was to estimate the incidence and to analyze the anatomy of double inlet-double outlet right ventricle complex and its associated cardiac anomalies in our autopsy series. Among the 1640 hearts with congenital heart disease of our Anatomical Collection, we reviewed the specimens with double inlet-double outlet right ventricle, according to the sequential-segmental analysis, identifying associated cardiac anomalies and examining lung histology to assess the presence of pul...

  9. Double layers and circuits in astrophysics

    International Nuclear Information System (INIS)

    Alfven, H.

    1986-05-01

    As the rate of energy release in a double layer with voltage DeltaV is P corresponding to IDeltaV, a double layer must be treated part of a circuit which delivers the current I. As neither double layer nor circuit can be derived from magnetofluid models of a plasma, such models are useless for treating energy transfer by menas of double layers. They must be replaced by particle models and circuit theory. A simple circuit is suggested which is applied to the energizing of auroroal particles, to solar flares, and to intergalactic double radio sources. Application to the heliospheric current systems leads to the prediction of two double layers on the sun's axis which may give radiations detectable from earth. Double layers in space should be classified as a new type of celestial object (one example is the double radio sources). It is tentatively suggested in X-ray and gamma-ray bursts may be due to exploding double layers (although annihilation is an alternative energy source). A study of how a number of the most used textbooks in astrophysics treat important concepts like double layers, critical velocity, pinch effects and circuits is made. It is found that students using these textbooks remain essentially ignorant of even the existence of these, in spite of the fact that some of them have been well known for half a centry (e.g., double layers, Langmuir, 1929: pinch effect, Bennet, 1934). The conclusion is that astrophysics is too important to be left in the hands of the astrophysicist. Earth bound and space telescope data must be treated by scientists who are familiar with laboratory and magnetospheric physics and circuit theory, and of course with modern plasma theory. At least by volume the universe consists to more than 99 percent of plasma, and electromagnetic forces are 10/sup39/ time stronger than gravitation

  10. Double meanings will not save the principle of double effect.

    Science.gov (United States)

    Douglas, Charles D; Kerridge, Ian H; Ankeny, Rachel A

    2014-06-01

    In an article somewhat ironically entitled "Disambiguating Clinical Intentions," Lynn Jansen promotes an idea that should be bewildering to anyone familiar with the literature on the intention/foresight distinction. According to Jansen, "intention" has two commonsense meanings, one of which is equivalent to "foresight." Consequently, questions about intention are "infected" with ambiguity-people cannot tell what they mean and do not know how to answer them. This hypothesis is unsupported by evidence, but Jansen states it as if it were accepted fact. In this reply, we make explicit the multiple misrepresentations she has employed to make her hypothesis seem plausible. We also point out the ways in which it defies common sense. In particular, Jansen applies her thesis only to recent empirical research on the intentions of doctors, totally ignoring the widespread confusion that her assertion would imply in everyday life, in law, and indeed in religious and philosophical writings concerning the intention/foresight distinction and the Principle of Double Effect. © The Author 2014. Published by Oxford University Press, on behalf of the Journal of Medicine and Philosophy Inc. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  11. Finite difference order doubling in two dimensions

    Energy Technology Data Exchange (ETDEWEB)

    Killingbeck, John P [Mathematics Centre, University of Hull, Hull HU6 7RX (United Kingdom); Jolicard, Georges [Universite de Franche-Comte, Institut Utinam (UMR CNRS 6213), Observatoire de Besancon, 41 bis Avenue de l' Observatoire, BP1615, 25010 Besancon cedex (France)

    2008-03-28

    An order doubling process previously used to obtain eighth-order eigenvalues from the fourth-order Numerov method is applied to the perturbed oscillator in two dimensions. A simple method of obtaining high order finite difference operators is reported and an odd parity boundary condition is found to be effective in facilitating the smooth operation of the order doubling process.

  12. Quantum groups and double quiver algebras

    International Nuclear Information System (INIS)

    Huang Hualin; Yang Shilin

    2004-07-01

    For a finite dimensional sernisimple Lie algebra g and a root q of unity in a field k we associate to these data a double quiver Q-bar. It is shown that a restricted version of the quantized enveloping algebras U q (g) is a quotient of the double quiver algebra kQ-bar. (author)

  13. Stationary Double Layers in a Collisionless Magnetoplasma

    DEFF Research Database (Denmark)

    Noriyoshi, Sato; Mieno, Tetsu; Hatakeyama, Rikizo

    1983-01-01

    Stationary double layers are generated in a magnetoplasma by applying potential differences between two heated plates on which the plasma is produced by surface ionization. By measuring the double-layer formation process, a localized potential drop is found to be formed initially in front of the ...

  14. Expanding Exports: Can Tennessee Double Its Exports?

    OpenAIRE

    Steven G. Livingston

    2010-01-01

    In this year's State of the Union Address, President Obama announced a National Export Initiative to double American exports over the next five years. He claimed that this could add two million jobs to the American economy. Could Tennessee actually double its exports over this period? And what would be the impact if it did?

  15. molecules in a functionalized layered double hydroxide

    Indian Academy of Sciences (India)

    Unknown

    included within the functionalized Mg–Al layered double hydroxide solid are similar to that of dilute so- lutions of the PAH in non-polar ... thermally stable over a wide temperature range with their emission properties practically unaltered. Keywords. Layered double ..... deformation, C–C skeletal stretch. 1020. 1024. 1024. –.

  16. The homozygosity verification for doubled haploid Japanese ...

    African Journals Online (AJOL)

    ELOHO

    2012-09-18

    Sep 18, 2012 ... coefficients of variation of doubled haploids were significantly higher than those of normal diploids. Key words: Doubled haploids, gynogenesis, Japanese flounder, Paralichthys olivaceus. INTRODUCTION. Mitotic gynogenesis in fish has been used to produce completely homozygous progenies (Thorgaad ...

  17. The Doubling Moment: Resurrecting Edgar Allan Poe

    Science.gov (United States)

    Minnick, J. Bradley; Mergil, Fernando

    2008-01-01

    This article expands upon Jeffrey Wilhelm's and Brian Edmiston's (1998) concept of a doubling of viewpoints by encouraging middle level students to use dramatization to take on multiple perspectives, to pose interpretive questions, and to enhance critical inquiry from inside and outside of texts. The doubling moment is both the activation of…

  18. Intrateam Communication and Performance in Doubles Tennis

    Science.gov (United States)

    Lausic, Domagoj; Tennebaum, Gershon; Eccles, David; Jeong, Allan; Johnson, Tristan

    2009-01-01

    Verbal and nonverbal communication is a critical mediator of performance in team sports and yet there is little extant research in sports that involves direct measures of communication. Our study explored communication within NCAA Division I female tennis doubles teams. Video and audio recordings of players during doubles tennis matches captured…

  19. Pion double charge exchange and nuclear structure

    International Nuclear Information System (INIS)

    Ginocchio, J.N.

    1987-01-01

    Pion double charge exchange to both the double-analog state and the ground state is studied for medium weight nuclei. The relative cross section of these two transitions and the importance of nuclear structure as a function of pion kinetic energy is examined. 16 figs., 5 tabs

  20. Laser alignment measurement model with double beam

    Science.gov (United States)

    Mo, Changtao; Zhang, Lili; Hou, Xianglin; Wang, Ming; Lv, Jia; Du, Xin; He, Ping

    2012-10-01

    Double LD-Double PSD schedule.employ a symmetric structure and there are a laser and a PSD receiver on each axis. The Double LD-Double PSD is used, and the rectangular coordinate system is set up by use of the relationship of arbitrary two points coordinates, and then the parameter formula is deduced by the knowledge of solid geometry. Using the data acquisition system and the data processing model of laser alignment meter with double laser beam and two detector , basing on the installation parameter of the computer, we can have the state parameter between the two shafts by more complicated calculation and correction. The correcting data of the four under chassis of the adjusted apparatus moving on the level and the vertical plane can be calculated using the computer. This will instruct us to move the apparatus to align the shafts.

  1. Instability limits for spontaneous double layer formation

    International Nuclear Information System (INIS)

    Carr, J. Jr.; Galante, M. E.; McCarren, D.; Scime, E. E.; Sears, S.; VanDervort, R. W.; Magee, R. M.; Reynolds, E.

    2013-01-01

    We present time-resolved measurements that demonstrate that large amplitude electrostatic instabilities appear in pulsed, expanding helicon plasmas at the same time as particularly strong double layers appear in the expansion region. A significant cross-correlation between the electrostatic fluctuations and fluctuations in the number of ions accelerated by the double layer electric field is observed. No correlation is observed between the electrostatic fluctuations and ions that have not passed through the double layer. These measurements confirm that the simultaneous appearance of the electrostatic fluctuations and the double layer is not simple coincidence. In fact, the accelerated ion population is responsible for the growth of the instability. The double layer strength, and therefore, the velocity of the accelerated ions, is limited by the appearance of the electrostatic instability

  2. Double-trace deformations of conformal correlations

    Science.gov (United States)

    Giombi, Simone; Kirilin, Vladimir; Perlmutter, Eric

    2018-02-01

    Large N conformal field theories often admit unitary renormalization group flows triggered by double-trace deformations. We compute the change in scalar four-point functions under double-trace flow, to leading order in 1/ N. This has a simple dual in AdS, where the flow is implemented by a change of boundary conditions, and provides a physical interpretation of single-valued conformal partial waves. We extract the change in the conformal dimensions and three-point coefficients of infinite families of double-trace composite operators. Some of these quantities are found to be sign-definite under double-trace flow. As an application, we derive anomalous dimensions of spinning double-trace operators comprised of non-singlet constituents in the O( N) vector model.

  3. New double sulfates of uranyl

    International Nuclear Information System (INIS)

    Serezhkin, V.N.; Serezhkina, L.B.

    1977-01-01

    The possibility has been established of the formation of double uranyl sulphates with the composition MUO 2 (SO 4 ) 2 x5H 2 O (M=Mn or Co). These compounds are formed upon dissolution of MnSO 4 x5H 2 O or CoSO 4 x7H 2 O and UO 2 SO 4 x2.5H 2 O in a minimum amount of water with subsequent evaporation to dryness. The obtained monocrystals have been studied by X-ray structural analysis and the parameters of monoclinic elementary cells have been determined: MnUO 2 (SO 4 ) 2 x5H 2 O (a=6.524; b=11.396; c=8.362 A; β=90 deg 47') and CoUO 2 (SO 4 ) 2 x5H 2 O (a=6.448; b=11.305; c=8.286 A; β=90 deg). Possible spatial groups are P 2sub(1/m) or P2 1 ; Z=2. Thermographic study of the obtained compounds has been performed

  4. Contact double-contrast cholangiography.

    Science.gov (United States)

    Hishida, Y

    1979-05-01

    Recently operative cholangiography has become an essential step in biliary surgery. However, an usual technique in which x-ray film is set beneath the patient has its limitation in visualization of fine changes. The author devised a new technique to resolve this problem. A triangular mammography film designed for good positioning is vaccum-packed, coupled with an intensifying screen of the same size, and then is sterilized in advance. Barium solution mixed with Gascon drop (a defoaming agent) is used as contrast material. The duodenum and head of the pancreas are mobilized. Usual cholangiography is performed at first, introducing angiographic media through a catheter placed into the catheter placed into the common duct via the cystic duct. After this study a triangle film pack is set beneath the second part of the duodenum. Two to three milliliters of barium, 1 to 2 ml of Gascon, and 15 ml of air are pushed in; thus a contact double-contrast cholangiogram is obtained. This technique promises clear demonstration of the distal bile duct without risk, and even fine mucosal plicae may be discernible in the film.

  5. Use of neuronal networks in the modeling of the doses that receives the Cuban population by potassium-40 contained in their organism; Utilizacion de redes neuronales en la modelacion de las dosis que recibe la poblacion cubana por el potasio-40 contenido en su organismo

    Energy Technology Data Exchange (ETDEWEB)

    Zerquera, Juan Tomas; Prendes Alonso, Miguel; Lopez Bejerano, Gladys M.; Acosta Rodriguez, Nancy [Centro de Proteccion y Higiene de las Radiaciones, La Habana (Cuba)

    2001-07-01

    The potassium 40 constitutes the main source natural present in the organism that influences in the effective dose that people receive. With the objective of evaluating the contribution from this component to the doses received by the Cuban population, a study was developed in order to evaluate the doses for this cause. A representative sample was selected based on the distribution of Cuban population by sex and ages. The measurements were carried out in the Whole Body Counter of the Center for Radiation Protection and Hygiene. For the estimate of the doses an uniform distribution of potassium was assumed in the whole body and the methodology was used recommended by the ICRP. The values of annual effective dose varies between 93 and 209 mSv for the feminine sex and 102 and 212 mSv for the masculine sex. With the obtained values they were the adjustment coefficients for the functions dose-age for each one of the sexes. At the same time it was possible to model the estimate of the doses by means of a neural network that, trained with the obtained experimental data, it allows to estimate the due doses directly to the potassium 40 starting from the sex data, age, height and corporal weight. The effective dose mediates yearly for the public's members it was estimated in 149 {+-} 6 mSv, starting from the experimental data and the Cuban population's specific characteristics. (author)

  6. Simulation of plasma double-layer structures

    International Nuclear Information System (INIS)

    Borovsky, J.E.; Joyce, G.

    1982-01-01

    Electrostatic plasma double layers are numerically simulated by means of a magnetized 2 1/2-dimensional particle-in-cell method. The investigation of planar double layers indicates that these one-dimensional potential structures are susceptible to periodic disruption by instabilities in the low-potential plasmas. Only a slight increase in the double-layer thickness with an increase in its obliqueness to the magnetic field is observed. Weak magnetization results in the double-layer electric-field alignment of accelerated particles and strong magnetization results in their magnetic-field alignment. The numerial simulations of spatially periodic two-dimensional double layers also exhibit cyclical instability. A morphological invariance in two-dimensional double layers with respect to the degree of magnetization implies that the potential structures scale with Debye lengths rather than with gyroradii. Electron-beam excited electrostatic electron-cyclotron waves and (ion-beam driven) solitary waves are present in the plasmas adjacent to the double layers

  7. Families' Experiences of Doubling Up After Homelessness.

    Science.gov (United States)

    Bush, Hannah; Shinn, Marybeth

    2017-01-01

    This study examined experiences of doubling up among families after episodes of homelessness. Doubling up refers to two or more adults or families residing in the same housing unit, which has been an increasing trend in the United States in recent decades. Within the past 14 years, the number of households containing more than one family, related or unrelated, has more than tripled. Although doubling up is increasingly common among families at all income levels, this study seeks to understand the experiences of doubling up among families who have been homeless. Through qualitative interviews with caregivers of 29 families, we analyzed advantages and disadvantages of doubling up with the caregiver's parent, other family, and nonfamily. Experiences were rated on a four-point scale-(1) mostly negative, (2) negative mixed, (3) positive mixed, and (4) mostly positive-and coded for various positive and negative themes. Overall, we found that doubling up was a generally negative experience for families in our sample, regardless of their relationship to their hosts. Common themes included negative effects on children, undesirable environments, interpersonal tension, and feelings of impermanence and instability. For formerly sheltered families in this study, doubling up after shelter did not resolve their period of housing instability and may be only another stop in an ongoing cycle of homelessness.

  8. Evaluación de extractos de fique, coquito, sorgo y ruda como posibles bio-herbicidas Evaluation of cuban hemp, nut sedge, johnson grass and herb of grace extracts in weed control

    Directory of Open Access Journals (Sweden)

    Liliana Osorio Salazar

    2009-04-01

    Full Text Available En experimentos completamente al azar en condiciones de laboratorio y campo, en Palmira, Valle del Cauca, se evaluó el efecto de extractos de Macrophylla furcraea Baker (fique, Cyperus rotundus L (coquito, Sorghum bicolor L (sorgo, y Ruta graveolens L (ruda sobre la germinación de semillas de las arvenses Bidens pilosa L (papunga y Amaranthus dubius Mart (bledo y del cilantro Coriandrum sativum L. Se obtuvieron los extractos por el método Soxhlet, utilizando agua, etanol y cloroformo como solventes. Los extractos obtenidos se evaluaron en tres diluciones (0, 5 y 10 % en pruebas de germinación de semillas de las arvenses y del cultivo. Se emplearon tres repeticiones de 50 semillas cada una y el testigo se regó con agua destilada. Los extractos etanólicos y clorofórmicos de coquito y fique en las diluciones al 5 y 10 % presentaron el mayor efecto inhibitorio en la germinación a los 21 días. El ensayo de campo demostró el efecto inhibitorio de los extractos etanólicos de fique y coquito en la emergencia de las semillas del cilantro. El análisis de metabolitos secundarios comprobó la presencia de compuestos reportados como altamente tóxicos en fique y en menor cantidad en coquito, aunque los extractos de éste fueron los que más inhibieron la germinación.The objective of this work was to evaluate the effect of the extracts of the species Macrophylla furcraea Baker (cuban hemp, Cyperus rotundus L (nut sedge, Sorghum bicolor L (johnson grass and Ruta graveolens L (herb of grace on seed germination of two weeds and one crop. The extracts were obtained by the Soxhlet method, using water, ethanol and chloroform as solvents. Each extract was evaluated in three dilutions (0, 5 and 10 % v/v and was applied to Bidens pilosa L (spanish needle, Amaranthus dubius Mart (spleen amaranth and Coriandrum sativum L (coriander seeds. Three replications of 50 seeds each one were used and the control was watered only with destilled water. The results

  9. Double contrast barium meal and acetylcysteine

    International Nuclear Information System (INIS)

    Kinnunen, J.; Pietilae, J.; Ahovuo, J.; Mankinen, P.; Tervahartiala, P.

    1989-01-01

    In a prospective double blind study, acetylcysteine, a local and systemic respiratory tract mucolytic agent, or a placebo, were given to 100 patients prior to a double contrast barium meal to decrease the gastric mucus viscosity and to make the mucus layer thinner, in order to permit barium to outline the furrows surrounding the areae gastricae instead of the overlying thick mucus. However, acetylcysteine failed to improve either visualization of the areae gastricae or the general quality of the double contrast barium meal. (orig.)

  10. Doubling left syntactic positions in Danish

    DEFF Research Database (Denmark)

    Jørgensen, Henrik

    2016-01-01

    This paper deals with the doubling of left syntactic positions in Danish. Such doublings consist of a referential element: a NP or a clause, and an anaphoric element, an unstressed personal pronoun or an unstressed resumptive adverb. In main clauses, the CP-spec position may double in this way, w...... in the analysis of a broadcasted public speech (sect. 5). In earlier versions of Danish, as shown in sect. 4, the construction is both more frequent in writing and also seems almost obligatory....

  11. Stationary Double Layers in a Collisionless Magnetoplasma

    DEFF Research Database (Denmark)

    Noriyoshi, Sato; Mieno, Tetsu; Hatakeyama, Rikizo

    1983-01-01

    Stationary double layers are generated in a magnetoplasma by applying potential differences between two heated plates on which the plasma is produced by surface ionization. By measuring the double-layer formation process, a localized potential drop is found to be formed initially in front...... of the plate on the low-potential side, being accompanied with current limitation. This localized potential drop moves along the plasma column, but finally stops and results in the formation of the stationary double layer in the presence of sufficient plasma supply from the plate on the high-potential side....

  12. Single Photon Double Ionization of Atomic Oxygen

    Science.gov (United States)

    Wickramarathna, Madhushani; Gorczyca, Thomas; Ballance, Connor; Stolte, Wayne

    2017-04-01

    Single photon double ionization cross sections are calculated using an R-matrix with pseudostates (RMPS) method which was recently applied by Gorczyca et al. for the double photoionization of helium. With the convergence of these theoretical calculations for the simple case of helium, we extend this methodology to consider the more complex case of oxygen double photoionization. We compare our calculated results with recent measurements at the Advanced Light Source, as well as earlier experimental measurements. Our RMPS results agree well, qualitatively, with the experimental measurements, but there exist outstanding discrepancies to be addressed. This project is supported by NASA APRA award NNX17AD41G.

  13. Cinema's Doubles, Their Meaning, and Literary Intertexts

    OpenAIRE

    Andrade, Pilar

    2008-01-01

    In his paper "Cinema's Doubles, Their Meaning, and Literary Intertexts" Pilar Andrade analyzes the figure of the double as an element of cinema. Andrade does not take under consideration films in which the double is considered merely as a clinical case with no mystery (for example as in David Fincher's Fight Club or Brad Anderson's The Machinist) or in which it is used as a useful piece to make the plot without referring to the fantasy world (as in Joel Schumacher's Bad Company); instead, And...

  14. Double dens invaginatus: report of three cases.

    Science.gov (United States)

    Zengin, A Zeynep; Sumer, A Pinar; Celenk, Peruze

    2009-01-01

    Dens invaginatus results from an infolding of the outer surface of a tooth. The clinical importance of dens invaginatus results from the risk of pulpal disease. So, all clinicians should be aware of this anomaly. The presence of double dens invaginatus is extremely rare. This article presents three cases of double dens invaginatus in permanent maxillary lateral incisors, one with preventive restoration on its palatal surface. They were classified as double dens invaginatus because of two enamel lined invaginations presented in the crowns of these teeth.

  15. International and national aspects of double taxation

    OpenAIRE

    Doležalová, Veronika

    2007-01-01

    Veronika Doležalová Mezinárodní a vnitrostátní aspekty dvojího zdan ní 160 International and national aspects of double taxation - Resumé This thesis pays attention to the area of double taxation and its related national as well as international aspects. The reason for discussing this subject was its importance for removing the obstacles that double taxation presents to the development of economic relations between countries. The thesis is divided into five chapters. There are six annexes att...

  16. The International Double Taxation – Avoiding Methods

    Directory of Open Access Journals (Sweden)

    Nicoleta Barbuta-Misu

    2009-06-01

    Full Text Available The paper presents the main causes that determine double taxation, its forms, i.e. the economicdouble taxation and the international legal double taxation, the need for eliminating the double taxation andavoiding methods. In the presentation of the avoidance methods have been used practical examples forcomparison of the tax advantages for income beneficiary between: the total exemption method andprogressive exemption method, on the one hand, and total crediting method and ordinary crediting method,on the other hand, but the comparing of tax reduction between methods of exemption and crediting.

  17. The Observation of Binocular Double Stars

    Science.gov (United States)

    Ropelewski, Mike; Argyle, R. W.

    The night sky presents a fascinating variety of double stars, ranging from wide, AQ1 optical pairs to close binary systems. A few doubles can be divided with the unaided eye, while a modest pair of binoculars will reveal many more; the study of double stars can be enjoyed by those who do not possess a large telescope or expensive equipment. There is a broad selection of binoculars on the market, so let us take a 10 look at those that might be suitable for this branch of astronomy.

  18. Three step double layers in the laboratory. [plasma physics

    Science.gov (United States)

    Bailey, Andrew, III; Hershkowitz, Noah

    1988-01-01

    A new class of stationary double layer structure, with three or more distinct steps, is demonstrated in the laboratory. A large monotonic potential increase results from a series of smaller double layers. In many respects, these double layer structures resemble those inferred from satellite measurements of auroral double layers. This new class of double layer appears to depend on turbulence for its existence and to be a hybrid structure, intermediate between anomalous resistivity and BGK double layers.

  19. Policy and strategy of the Cuban Regulatory Organization for the establishment of the legal and regulation frame; Politica y estrategia del Organo Regulador Cubano para el establecimiento del marco legal y reglamentario

    Energy Technology Data Exchange (ETDEWEB)

    Arnau F, A.; Alonso G, I.; Sarabia M, I. [Centro Nacional de Seguridad Nuclear (Cuba)

    2006-07-01

    The National Center of Nuclear Security, Cuban entity authorized to exercise the regulation functions and control of the security of the use of the nuclear energy and the accounting and control of the nuclear materials, has among its functions, to elaborate and to propose for its approval to the corresponding instances, the juridical, technical dispositions and of procedure in its competition sphere, what demands that in this sense clear guidelines exist to carry out this social mission. The fact of assuming this function demands the necessity of a Politics for the establishment of the legal and regulation frame that expresses in a coherent way the general lines on those that it behaves the elaboration of the standards that govern this activity, to reach the end in an efficient and effective way and consequently the adoption of a Strategy that frames the necessary actions that assure the one execution and development of the politics and the pursuit of the precise rules for an optimal result. The Politics for the establishment of the legal and regulation frame of the National Center of Nuclear Security is based on a group of general principles that mark the guidelines so that this activity is chord to the national juridical system, to the good ones international practices and the recommendations of the International Atomic Energy Agency appropriated to the national experience and the daily reality, being this a transparent and reconciled process in such a way that the addressee of these standards can contribute their recommendations to the ends of achieving an effective applicability of the legal and regulation frame that governs this activity in the country. The development and pursuit of these principles is sustained in a group of actions to the help of the strategy for the establishment of the legal and regulation frame, embracing the actions so much during the process of elaboration of the legal frame, its systematic revision, the publication and distribution

  20. MOPIGD: Modelo para la implementación de la gestión de documentos en el sistema empresarial cubano (MOPIGD: Model for Document Management Implementation in Cuban Business System

    Directory of Open Access Journals (Sweden)

    María de los Ángeles Ruiz González

    2016-11-01

    Full Text Available Resumen El desarrollo de la Sociedad de la Información ha propiciado en los últimos años la continuidad de cambios de paradigmas con respecto la gestión de documentos, condicionado por el desarrollo de las organizaciones y las exigencias del entorno económico y social. La gestión de documental resulta una oportunidad de alto valor para cualquier organización, ante la necesidad de ejercer la toma de decisiones y acometer procesos de la administración basados en la evidencia documental, con la garantía de una mayor transparencia y credibilidad. En el cumplimiento de este propósito, se reconocen los esfuerzos de investigación en la búsqueda de diversas soluciones para atender las exigencias de la gestión documental en los escenarios de la administración pública y de los negocios. El presente trabajo pone a consideración algunas ideas acerca del desarrollo de un modelo para la gestión documental para la empresa estatal cubana, en respuesta a las exigencias de la actualización del modelo económico cubano actual. English abstract. The development of the Information Society has led in recent years to the continuity of changes in paradigms regarding document management, conditioned by the development of organizations and the demands of the economic and social environment. Document management is an opportunity of high value for any organization, given the need to exercise decision-making and undertake management processes based on documentary evidence, with the guarantee of greater transparency and credibility. In order to fulfill this purpose, the research efforts are recognized in the search for various solutions to meet the requirements of document management in the public administration and business scenarios. This paper presents some ideas about the development of a document management model for the Cuban state - owned company, in response to the demands of updating the current Cuban economic model.

  1. A Double Inequality for Gamma Function

    Directory of Open Access Journals (Sweden)

    Xiaoming Zhang

    2009-01-01

    Full Text Available Using the Alzer integral inequality and the elementary properties of the gamma function, a double inequality for gamma function is established, which is an improvement of Merkle's inequality.

  2. Preparation of uranium ingots from double fluorides

    International Nuclear Information System (INIS)

    Le Boulbin, E.

    1967-05-01

    A simple method has been developed for the preparation of uranium double fluorides and has given a new impetus to the study of the reduction of these compounds with a view to obtaining very pure uranium ingots. This reduction can be carried out using calcium or magnesium as the reducing agent, this latter metal being very interesting from the practical point of view. A comparative study of the heat balances of the reduction processes for the double fluorides and for uranium tetrafluoride has shown that reduction of the double fluorides is possible. The exact experimental conditions for these reductions have been determined. Our study has shown in particular that the reduction of the double salt UF 4 , CaF 2 by magnesium leads to the production of small (20 to 500 g) samples of high-purity uranium with a yield of 99 per cent. (author) [fr

  3. Double field theory: a pedagogical review

    International Nuclear Information System (INIS)

    Aldazabal, Gerardo; Marqués, Diego; Núñez, Carmen

    2013-01-01

    Double field theory (DFT) is a proposal to incorporate T-duality, a distinctive symmetry of string theory, as a symmetry of a field theory defined on a double configuration space. The aim of this review is to provide a pedagogical presentation of DFT and its applications. We first introduce some basic ideas on T-duality and supergravity in order to proceed to the construction of generalized diffeomorphisms and an invariant action on the double space. Steps towards the construction of a geometry on the double space are discussed. We then address generalized Scherk–Schwarz compactifications of DFT and their connection to gauged supergravity and flux compactifications. We also discuss U-duality extensions and present a brief parcours on worldsheet approaches to DFT. Finally, we provide a summary of other developments and applications that are not discussed in detail in the review. (topical review)

  4. Double layer dynamics in a collisionless magnetoplasma

    DEFF Research Database (Denmark)

    Iizuka, S.; Michelsen, Poul; Juul Rasmussen, Jens

    1985-01-01

    Investigations of double layer dynamics are performed in a Q-machine plasma by applying a positive step potential to a cold end-plate collector. The double layer created at the grounded plasma source just after the pulse is applied propagates towards the collector with the plasma flow speed. Large...... oscillations occur in the plasma current which is related to a recurring formation and propagation of the double layer. The current is limited during the propagation by a growing negative potential dip formed on the low-potential tail. Similar phenomena appear on the low-potential tail of the stationary double...... layer formed by applying a potential difference between two plasma sources...

  5. Frequency Doubling Broadband Light in Multiple Crystals

    International Nuclear Information System (INIS)

    Alford, William J.; Smith, Arlee V.

    2000-01-01

    The authors compare frequency doubling of broadband light in a single nonlinear crystal with doubling in five crystals with intercrystal temporal walk off compensation, and with doubling in five crystals adjusted for offset phase matching frequencies. Using a plane-wave, dispersive numerical model of frequency doubling they study the bandwidth of the second harmonic and the conversion efficiency as functions of crystal length and fundamental irradiance. For low irradiance the offset phase matching arrangement has lower efficiency than a single crystal of the same total length but gives a broader second harmonic bandwidth. The walk off compensated arrangement gives both higher conversion efficiency and broader bandwidth than a single crystal. At high irradiance, both multicrystal arrangements improve on the single crystal efficiency while maintaining broad bandwidth

  6. Propagator for the double delta potential

    International Nuclear Information System (INIS)

    Cacciari, Ilaria; Moretti, Paolo

    2006-01-01

    The propagator for the double delta potential is calculated starting from the integral form of the Schroedinger equation. A compact expression of its Laplace transform is found, that can be explicitly inverted in some limiting cases

  7. Forensic testing of a double tee bridge.

    Science.gov (United States)

    2014-12-01

    This report describes an investigation to quantify the behavior of precast, prestressed concrete double-tee bridge : girders made with lightweight concrete. As part of the investigation, three bridge girders were salvaged from a : decommissioned brid...

  8. Double-Critical Graphs and Complete Minors

    DEFF Research Database (Denmark)

    Kawarabayashi, Ken-ichi; Pedersen, Anders Sune; Toft, Bjarne

    2010-01-01

      A connected $k$-chromatic graph $G$ is double-critical if for all edges $uv$ of $G$ the graph $G - u - v$ is $(k-2)$-colourable. The only known double-critical $k$-chromatic graph is the complete $k$-graph $K_k$. The conjecture that there are no other double-critical graphs is a special case...... of a conjecture from 1966, due to Erd\\H{o}s and Lov\\'asz.  The conjecture has been verified for $k \\leq 5$.  We prove for $k=6$ and $k=7$ that any non-complete double-critical $k$-chromatic graph is $6$-connected and has $K_k$ as a minor. Udgivelsesdato: 07.06....

  9. Inverse solutions for tilting orthogonal double prisms.

    Science.gov (United States)

    Li, Anhu; Ding, Ye; Bian, Yongming; Liu, Liren

    2014-06-10

    An analytical reverse solution and actual examples are given to show how to direct a laser beam from a pair of orthogonal prisms to given targets in free space. Considering the influences of double-prism structural parameters, a lookup table method to seek the numerical reverse solution of each prism's tilting angle is also proposed for steering the double-prism orientation to track a target position located in the near field. Some case studies, as well as a specified elliptical target trajectory scanned by the cam-based driving double prisms, exhibit the significant application values of the theoretical derivation. The analytic reverse and numerical solutions can be generalized to investigate the synthesis of scanning patterns and the controlling strategy of double-prism tilting motion, the potentials of which can be explored to perform the orientation and position tracking functions in applications of precision engineering fields.

  10. Double parton scatterings at the CERN LHC

    CERN Document Server

    Del Fabbro, R

    2001-01-01

    Double parton collisions give important effects at the LHC and not only in the QCD sector. Given the relatively low threshold and the consequent large rate of production of bb pairs, one expects a large background of double parton collisions to the Higgs boson production and decay via the bbW channel, which is one of the most promising discovery channels at the LHC, if the Higgs mass is below the W/sup + /W/sup -/ threshold. (15 refs).

  11. On statistical acceleration convergence of double sequences

    Directory of Open Access Journals (Sweden)

    Bipan Hazarika

    2017-04-01

    Full Text Available In this article the notion of statistical acceleration convergence of double sequences in Pringsheim's sense has been introduced. We prove the decompostion theorems for  statistical acceleration convergence of double sequences and some theorems related to that concept have been established using the four dimensional matrix transformations. We provided some examples, where the results of acceleration convergence fails to hold for the statistical cases.

  12. Mitigating Double Taxation in an Open Economy

    OpenAIRE

    Lindhe, Tobias

    2001-01-01

    The interaction of various methods of mitigating economic and international double taxation of corporate source income is studied within a standard neoclassical model of firm behavior. The main purpose is to determine to what extent methods effective in mitigating economic double taxation in a closed economy remain useful in an open economy where the firm's marginal investor is a foreigner. While a cut in the statutory corporate tax rate invariably reduces the cost of capital, the impact of t...

  13. Numerical simulations on ion acoustic double layers

    International Nuclear Information System (INIS)

    Sato, T.; Okuda, H.

    1980-07-01

    A comprehensive numerical study of ion acoustic double layers has been performed for both periodic as well as for nonperiodic systems by means of one-dimensional particle simulations. For a nonperiodic system, an external battery and a resistance are used to model the magnetospheric convection potential and the ionospheric Pedersen resistance. It is found that the number of double layers and the associated potential buildup across the system increases with the system length

  14. THE EFFICIENCY OF TENNIS DOUBLES SCORING SYSTEMS

    Directory of Open Access Journals (Sweden)

    Geoff Pollard

    2010-09-01

    Full Text Available In this paper a family of scoring systems for tennis doubles for testing the hypothesis that pair A is better than pair B versus the alternative hypothesis that pair B is better than A, is established. This family or benchmark of scoring systems can be used as a benchmark against which the efficiency of any doubles scoring system can be assessed. Thus, the formula for the efficiency of any doubles scoring system is derived. As in tennis singles, one scoring system based on the play-the-loser structure is shown to be more efficient than the benchmark systems. An expression for the relative efficiency of two doubles scoring systems is derived. Thus, the relative efficiency of the various scoring systems presently used in doubles can be assessed. The methods of this paper can be extended to a match between two teams of 2, 4, 8, …doubles pairs, so that it is possible to establish a measure for the relative efficiency of the various systems used for tennis contests between teams of players.

  15. Doubling (Dual) Hahn Polynomials: Classification and Applications

    Science.gov (United States)

    Oste, Roy; Van der Jeugt, Joris

    2016-01-01

    We classify all pairs of recurrence relations in which two Hahn or dual Hahn polynomials with different parameters appear. Such couples are referred to as (dual) Hahn doubles. The idea and interest comes from an example appearing in a finite oscillator model [Jafarov E.I., Stoilova N.I., Van der Jeugt J., J. Phys. A: Math. Theor. 44 (2011), 265203, 15 pages, arXiv:1101.5310]. Our classification shows there exist three dual Hahn doubles and four Hahn doubles. The same technique is then applied to Racah polynomials, yielding also four doubles. Each dual Hahn (Hahn, Racah) double gives rise to an explicit new set of symmetric orthogonal polynomials related to the Christoffel and Geronimus transformations. For each case, we also have an interesting class of two-diagonal matrices with closed form expressions for the eigenvalues. This extends the class of Sylvester-Kac matrices by remarkable new test matrices. We examine also the algebraic relations underlying the dual Hahn doubles, and discuss their usefulness for the construction of new finite oscillator models.

  16. The Design and its Verification of the Double Rotor Double Cage Induction Motor

    Science.gov (United States)

    Sinha, Sumita; Deb, Nirmal K.; Biswas, Sujit K.

    2017-02-01

    The concept of a double rotor motor presented earlier and its equivalent circuit has been developed, showing a non-linear parameter content. The two rotors (which are recommended to be double cage type for development of high starting torque) can run with equal or unequal speed independently, depending on their individual loading. This paper presents the elaborate design procedure, step-by-step, for the double rotor double cage motor and verifies the designed data with that obtained from three separate tests (compared to two for conventional motor) on a prototype, such that optimum performance can be obtained from the motor.

  17. La mujer de edad mediana y su satisfacción con la vida en poblaciones cubanas The middle-aged woman and her satisfaction with life in Cuban populations

    Directory of Open Access Journals (Sweden)

    Guillermo Díaz Llanes

    2007-03-01

    Full Text Available Las mujeres en la etapa media de la vida (40-59 años, constituyen uno de los grupos potencialmente vulnerables a enfermedades y a bajos niveles de bienestar subjetivo. El presente trabajo resume los principales resultados alcanzados en varios estudios realizados por el autor en diferentes poblaciones cubanas, con diferentes diseños. Se apreció una alta prevalencia de bienestar subjetivo. Las actitudes disfuncionales de logro y control constituyeron factores de riesgo de bajo bienestar subjetivo. Las mujeres cuidadoras de edad mediana exhibieron un adecuado bienestar subjetivo a expensas de un alto control sobre los roles que desempeñan.Middle-aged women (40-59 years old are one of the groups potentially vulnerable to diseases and to low levels of subjective well-being. This paper summarizes the main results attained in various studies conducted by the author in different Cuban populations with different designs. A high prevalence of subjective well-being was observed. The dysfunctional attitudes of achievement and control were risk factors for low subjective well-being. The best middle-aged care givers showed an adequate subjective well-being at the expense of a high control on the roles they play.

  18. Local IgG synthesis in three pediatric patients with cuban epidemic neuropathy Sintesis local de IgG en tres pacientes pediátricos com neuropatía epidêmica cubana

    Directory of Open Access Journals (Sweden)

    Alberto Dorta-Contreras

    1996-03-01

    Full Text Available Three pediatric patients with Cuban epidemic neuropathy were studied. Cerebrospinal fluid and sera were simultaneously obtained. Albumin and IgG were quantified by immunodifusion. Albumin quotient and local synthesis of IgG were calculated by Reiber/Felgenhauer formula. A patient with optic neuritis had a dysfunction of the blood-cerebrospinal fluid barrier. All the group had local synthesis of IgG.Se estudiaron tres pacientes pediátricos con neuropatia epidêmica cubana. Se obtuvieron suero y liquido cefalorraquídeo simultaneamente. Se cuantificaran los niveles de albúmina e IgG por inmunodifusion radial. Se calculo la razón albúmina y la fórmula de Reiber/Felgenhauer. Un paciente con neuritis óptica tuvo una disfunción de la barrera sangre-líquido cefaloraquídeo. Todo el grupo tuvo síntesis local de IgG.

  19. Utilización de la zeolita para disminuir los gases tóxicos de los motores de combustión interna. // The utilization of Cuban zeolites in the decrease of toxic gases emissions of internal combustion engines.

    Directory of Open Access Journals (Sweden)

    J. L. Reyes González

    2003-01-01

    Full Text Available En el trabajo se presentan los resultados obtenidos al utilizar la zeolita natural cubana para la disminución de los gasestóxicos que los motores de combustión interna MCI. envían a la atmósfera. Los experimentos fueron realizados en bancosde pruebas de MCI. tanto para motores de carburación como para motores diesel. Obteniéndose eficiencias de disminucióndel CO del 80 %, del CnHm del 50% y el humo negro en un 90%. Se demuestra la importancia de la granulometría de lazeolita para esta eliminación y para mantener la potencia del motor dentro de rangos aceptables.Palabras claves: Toxicidad, zeolita, medio ambiente, filtros, gases de escape._______________________________________________________________________________Abstract.In this paper are presented the results of the utilization of Cuban zeolites in the decrease of toxic gas emissions toatmosphere of internal combustion engines, (MCI. The experiments were carried out in test bank for gasoline and dieselengines. The efficiency in the decrement of CO was of 80%, CnHm in 50%, and 90 % in soot. The size of the zeolitesparticle importance in the efficiency is demonstrated.Key words: Toxicity, zeolite, enviroment, filters, gas emissions.

  20. El Profesor Guía: máximo orientador del trabajo educativo en la Educación Médica Superior Cubana Guide professor: the greatest counselor for the educative work in the Cuban Medical High Education

    Directory of Open Access Journals (Sweden)

    Sonia Socarrás Sánchez

    2012-12-01

    Full Text Available El Profesor Guía en la universidad cubana y en particular en la educación médica superior desempeña un rol fundamental en el proceso de formación integral del futuro profesional. Para lograr este propósito debe cumplir con sus direcciones de trabajo y funciones, las cuales se abordan en este artículo. Se incorporan nuevas categorías como es la definición de la labor educativa de los profesores guías de la carrera de Medicina, la redefinición de Profesor Guía y se proponen nuevas funciones que debe asumir este docente.The guide professor in Cuban universities and particularly in the Medical High Education plays an essential role in the comprehensive education process of the future professional. To accomplish this purpose, the professor should fulfill his work directions and perform his duties, which are included in the following article. New categories are incorporated like for instance, the definition of educative work of the guide professor of the Medicine school and the redefinition of guide professor. Moreover, new duties to be accomplished by the guide professor are proposed.

  1. A data símbolo de 1898: o impacto da independência de Cuba na Espanha e Hispanoamérica The 1898’s symbol date: the Cuban Independence impact in Spain and Spanish America

    Directory of Open Access Journals (Sweden)

    Maria Helena Rolim Capelato

    2003-01-01

    Full Text Available O artigo tem como objetivo analisar o impacto da Independência de Cuba nos intelectuais espanhóis e hispanoamericanos e as razões da aproximação entre eles após o evento. 1898 tornou-se uma data-símbolo pelas mudanças significativas que produziu nas concepções de escritores hispânicos sobre o papel dos Estados Unidos na América Latina e sobre o destino da Espanha após a perda de sua última colônia.The article aims to analyze the Cuban Independence impact in Spanish and Spanish American intellectuals and the approximation reasons between them after the event. 1898 became a symbol date through the significatives changes that produced in Spanish American writers about the United State’s role in Latin America and about the Spain’s destiny after the loss of the last Spanish colony in America.

  2. Overlay metrology for double patterning processes

    Science.gov (United States)

    Leray, Philippe; Cheng, Shaunee; Laidler, David; Kandel, Daniel; Adel, Mike; Dinu, Berta; Polli, Marco; Vasconi, Mauro; Salski, Bartlomiej

    2009-03-01

    The double patterning (DPT) process is foreseen by the industry to be the main solution for the 32 nm technology node and even beyond. Meanwhile process compatibility has to be maintained and the performance of overlay metrology has to improve. To achieve this for Image Based Overlay (IBO), usually the optics of overlay tools are improved. It was also demonstrated that these requirements are achievable with a Diffraction Based Overlay (DBO) technique named SCOLTM [1]. In addition, we believe that overlay measurements with respect to a reference grid are required to achieve the required overlay control [2]. This induces at least a three-fold increase in the number of measurements (2 for double patterned layers to the reference grid and 1 between the double patterned layers). The requirements of process compatibility, enhanced performance and large number of measurements make the choice of overlay metrology for DPT very challenging. In this work we use different flavors of the standard overlay metrology technique (IBO) as well as the new technique (SCOL) to address these three requirements. The compatibility of the corresponding overlay targets with double patterning processes (Litho-Etch-Litho-Etch (LELE); Litho-Freeze-Litho-Etch (LFLE), Spacer defined) is tested. The process impact on different target types is discussed (CD bias LELE, Contrast for LFLE). We compare the standard imaging overlay metrology with non-standard imaging techniques dedicated to double patterning processes (multilayer imaging targets allowing one overlay target instead of three, very small imaging targets). In addition to standard designs already discussed [1], we investigate SCOL target designs specific to double patterning processes. The feedback to the scanner is determined using the different techniques. The final overlay results obtained are compared accordingly. We conclude with the pros and cons of each technique and suggest the optimal metrology strategy for overlay control in double

  3. Observing and Measuring Visual Double Stars

    CERN Document Server

    2013-01-01

    In these days of high-precision astrometric satellites, tremendous contributions to the science of astrometry are being made by amateur astronomers around the globe. This second edition of Observing and Measuring Visual Double Stars contains a significant amount of completely new material inspired by the work done by observers - particularly in the USA - since the first edition was published. Fifteen skilled and experienced astronomers have contributed chapters on their own specialization in the various fields. These include how to use the Internet to carry out precise astronomical measurement, an excellent guide to sketching double stars, and information on how to image double stars of unequal brightness. This new edition is the definitive book for those who are serious about this fascinating aspect of astronomy! Author Bob Argyle has been observing visual double stars for more than 40 years, some with the help of the world's biggest refractors, and has been director of the Webb Society Double Star Se...

  4. Re-naming D Double Prime

    Science.gov (United States)

    Chao, Benjamin F.

    1999-01-01

    "Knowledge about the dynamics of the D double prime region is a key to unlock some fundamental mysteries of the Earth heat engine which governs a wide range of global geophysical processes from tectonics to geodynamo." This benign sentence makes complete sense to many geophysicists. But for many others, it makes sense all except the odd nomenclature "D double prime". One knows about the crust, upper and lower mantle, outer and inner core, but where is the D double prime region? What meaning does it try to convey? Where is D prime region, or D, or A, B, C regions for that matter, and are there higher-order primes? How does such an odd name come about anyway? D double prime, or more "simply" D", is a generic designation given to the thin shell, about 200 km thick, of the lowermost mantle just above the core-mantle boundary inside the Earth. Incidentally, whether D" is "simpler" than "D double prime" depends on whether you are pronouncing it or writing/typing it; and D" can be confusing to readers in distinguishing quotation marks (such as in the above sentences) and second derivatives, and to word processors in spelling check and indexing.

  5. Celebrity arcade suture blepharoplasty for double eyelid.

    Science.gov (United States)

    Liao, Wen-Chieh; Tung, Tung-Chain; Tsai, Tzong-Ru; Wang, Chia-Yi; Lin, Chiu-Hwa

    2005-01-01

    In Taiwan, double-eyelid surgery is the most popular cosmetic surgical procedure. The technique preferred by plastic surgeons is the incision method because it is believed that this method can provide stable double-eyelid results. It is the authors' observation that patients prefer an invagination fold rather than a significantly high fold. Suture blepharoplasty may create a relatively even and symmetric invagination fold. In the past, the major disadvantage of the suture technique has been the opinion that the double fold fades away. The celebrity arcade suture (CAS) technique was applied in double-eyelid operations. The CAS technique includes three major techniques: stabbing incision, transtarsal suture, and bridge connection. The whole procedure can be completed in 15 min. From June 2001 to November 2004, 312 patients underwent the CAS technique. Of the 312 patients who underwent the CAS technique, 5 required a revisit, with 3 of these returning patients reporting fold disappearance. These three patients received repeat suture procedures. The findings show that the CAS technique is a reliable method for establishing a smooth, constant, and symmetric double eyelid, and that CAS requires only a short recovery time.

  6. The concept of double inlet-double outlet right ventricle: a distinct congenital heart disease.

    Science.gov (United States)

    Spadotto, Veronica; Frescura, Carla; Ho, Siew Yen; Thiene, Gaetano

    The aim of this study was to estimate the incidence and to analyze the anatomy of double inlet-double outlet right ventricle complex and its associated cardiac anomalies in our autopsy series. Among the 1640 hearts with congenital heart disease of our Anatomical Collection, we reviewed the specimens with double inlet-double outlet right ventricle, according to the sequential-segmental analysis, identifying associated cardiac anomalies and examining lung histology to assess the presence of pulmonary vascular disease. We identified 14 hearts with double inlet-double outlet right ventricle (0.85%). Right atrial isomerism was observed in 10 hearts, situs solitus in 3 and left atrial isomerism in one. Regarding the mode of atrioventricular connection, all hearts but one had a common atrioventricular valve. Systemic or pulmonary venous abnormalities were noted in all patients with atrial isomerism. In nine patients a valvular or subvalvular pulmonary stenosis was present. Among the functionally "univentricular hearts", double inlet- double outlet right ventricle represents a peculiar entity, mostly in association with right atrial isomerism. Multiple cardiac anomalies are associated and may complicate surgical repair. Copyright © 2016 Elsevier Inc. All rights reserved.

  7. Dimerization of pentanuclear clusters [Fe3Q(AsMe)(CO)9] (Q = Se, Te) as a conversion pathway to novel cubane-like aggregates.

    Science.gov (United States)

    Pushkarevsky, Nikolay A; Konchenko, Sergey N; Zabel, Manfred; Bodensteiner, Michael; Scheer, Manfred

    2011-03-07

    The first examples of carbonyl heterocubane-type clusters, [Fe(4)(μ(3)-Q)(2)(μ(3)-AsMe)(2)(CO)(12)] (2, Q = Se (a), Te (b)), which simultaneously contain elements of group 15 and 16, were obtained by thermolysis of [Fe(3)(μ(3)-Q)(μ(3)-AsMe)(CO)(9)] (1) in acetonitrile. The clusters 2 possess a cubic Fe(4)Q(2)As(2) core with alternating Fe and Q/As atoms. The coordination environment of the Fe atoms is close to octahedral, and those of Q or As atoms are tetrahedral, which determines the distorted cubic cluster core geometry. The second main products of thermolysis are the clusters [Fe(6)(μ(3)-Q)(μ(4)-Q)(μ(4)-AsMe)(2)(CO)(12)] (3a,b), whose core contains double the elemental composition of the initial cluster 1. In the case of the Se-containing cluster two other minor products [Fe(4)(μ(4)-Se)(μ(4)-SeAsMe)(CO)(12)] (4) and [Fe(3)(μ(3)-AsMe)(2)(CO)(9)] (5) are formed. Based on the structures and properties of the products, a reaction route for the conversion of 1 into 2 is proposed, which includes the associative formation of the clusters 3 as intermediates, unlike the dissociative pathways previously known for the transformations of similar clusters of the type [Fe(3)Q(2)(CO)(9)].

  8. Limiting effects in double EEX beamline

    Science.gov (United States)

    Ha, G.; Power, J. G.; Conde, M.; Doran, D. S.; Gai, W.

    2017-07-01

    The double emittance exchange (EEX) beamline is suggested to overcome the large horizontal emittance and transverse jitter issues associated with the single EEX beamline while preserving its powerful phase-space manipulation capability. However, the double EEX beamline also has potential limitations due to coherent synchrotron radiation (CSR) and transverse jitter. The former limitation arises because double EEX uses twice as many bending magnets as single EEX which means stronger CSR effects degrading the beam quality. The latter limitation arises because a longitudinal jitter in front of the first EEX beamline is converted into a transverse jitter in the middle section (between the EEX beamlines) which can cause beam loss or beam degradation. In this paper, we numerically explore the effects of these two limitations on the emittance and beam transport.

  9. Double Fano resonances in plasmon coupling nanorods

    International Nuclear Information System (INIS)

    Liu, Fei; Jin, Jie

    2015-01-01

    Fano resonances are investigated in nanorods with symmetric lengths and side-by-side assembly. Single Fano resonance can be obtained by a nanorod dimer, and double Fano resonances are shown in nanorod trimers with side-by-side assembly. With transverse plasmon excitation, Fano resonances are caused by the destructive interference between a bright superradiant mode and dark subradiant modes. The bright mode originates from the electric plasmon resonance, and the dark modes originate from the magnetic resonances induced by near-field inter-rod coupling. Double Fano resonances result from double dark modes at different wavelengths, which are induced and tuned by the asymmetric gaps between the adjacent nanorods. Fano resonances show a high figure of merit and large light extinction in the periodic array of assembled nanorods, which can potentially be used in multiwavelength sensing in the visible and near-infrared regions. (paper)

  10. Double shell tanks emergency pumping plan

    Energy Technology Data Exchange (ETDEWEB)

    Tangen, M.J.

    1994-09-26

    At the request of the Department of Energy (DOE), a formal plan for the emergency transfer of waste from a leaking double shell tank to a designated receiver tank has been developed. This plan is in response to the priority 2 safety issue ``Response to a leaking double-shell tank`` in the DOE Report to Congress, 1991. The plan includes the tanks in four of the east tank farms and one of the west farms. The background information and supporting calculations used for the creation of the emergency plan are discussed in this document. The scope of this document is all of the double shell tanks in the AN, AP, AW, AY, and SY farms. The transfer lines, flush pits, and valve pits involved in the transfer of waste between these farms are also included in the scope. Due to the storage of high heat waste, AZ farm is excluded at this time.

  11. Probabilistic double guarantee kidnapping detection in SLAM.

    Science.gov (United States)

    Tian, Yang; Ma, Shugen

    2016-01-01

    For determining whether kidnapping has happened and which type of kidnapping it is while a robot performs autonomous tasks in an unknown environment, a double guarantee kidnapping detection (DGKD) method has been proposed. The good performance of DGKD in a relative small environment is shown. However, a limitation of DGKD is found in a large-scale environment by our recent work. In order to increase the adaptability of DGKD in a large-scale environment, an improved method called probabilistic double guarantee kidnapping detection is proposed in this paper to combine probability of features' positions and the robot's posture. Simulation results demonstrate the validity and accuracy of the proposed method.

  12. Radiosurgery and the double logistic product formula

    International Nuclear Information System (INIS)

    Flickinger, J.C.; Steiner, L.

    1990-01-01

    The double logistic product formula is proposed as a method for predicting the probability of developing brain necrosis after high dose irradiation of small target volumes as used in stereotactic radiosurgery. Dose-response data observed for the production of localized radiation necreosis for treating intractable pain with the original Leksell gamma unit were used to choose the best fitting parameters for the double logistic product formula. This model can be used with either exponential or linear quadratic formulas to account for the effects of dose, fractionation and time in addition to volume. Dose-response predictions for stereotactic radiosurgery with different sized collimators are presented. (author). 41 refs.; 5 figs.; 1 tab

  13. Deformed nucleon and double-delta coupling

    Energy Technology Data Exchange (ETDEWEB)

    Abbas, Afsar (Institute of Physics, Bhubaneswar (India))

    1991-11-01

    Although the coupling constant (f{sub {pi}{Delta}{Delta}} /f{sub {pi}NN}) {sup 2} is of much importance in the context of current research in the role of the double-delta in hadron physics, so far the naive quark model value has been used, which is shown to be poor. Here we obtain a better value for this coupling constant in a deformed nucleon model which would help us to rectify this defect and enable us to conduct a proper study of the exotic double-delta channel. (author).

  14. Double Hopf bifurcation in delay differential equations

    Directory of Open Access Journals (Sweden)

    Redouane Qesmi

    2014-07-01

    Full Text Available The paper addresses the computation of elements of double Hopf bifurcation for retarded functional differential equations (FDEs with parameters. We present an efficient method for computing, simultaneously, the coefficients of center manifolds and normal forms, in terms of the original FDEs, associated with the double Hopf singularity up to an arbitrary order. Finally, we apply our results to a nonlinear model with periodic delay. This shows the applicability of the methodology in the study of delay models arising in either natural or technological problems.

  15. Double Harmonic Transmission (D.H.T.

    Directory of Open Access Journals (Sweden)

    Sava Ianici

    2006-10-01

    Full Text Available The paper presents the construction and functioning of a new type of harmonic drive named double harmonic transmission (D.H.T.. In the second part of this paper is presented the dynamic analysis of the double harmonic transmission, which is based on the results of the experimental researches on the D.H.T. This study of the stress status and the forces distribution is necessary for to determine the durability on the portant elements of the D.H.T.

  16. The double contrast examination of the colon

    International Nuclear Information System (INIS)

    Welin, S.; Welin, G.

    1980-01-01

    The double contrast method has been modified in order to get a more detailed picture of the mucous membrane of the colon. The method has been employed at Malmoe hospital since 1953. The method and its diagnostic application in cases of adenoids, villiferous tumours, diverticula, Crohn's disease, ulcerating colitis, and deformation of the rectum/sigma junction due to external endometriosis and peritoneal carcinosis are described. The diagnostic values of the double contrast method and colposcopy/biopsy of the colon are compared. The two methods are found to be complementary. (MG) [de

  17. Unique double recurrence of cerebral arteriovenous malformation.

    Science.gov (United States)

    Nagm, Alhusain; Horiuchi, Tetsuyoshi; Ichinose, Shunsuke; Hongo, Kazuhiro

    2015-09-01

    Surgically treated patients with arteriovenous malformations (AVMs) are considered cured when the postoperative angiogram proves complete resection. However, despite no residual nidus or early draining vein on postoperative angiogram, rare instances of AVM recurrence have been reported in adults. In this paper, the authors present a case of a 24-year-old woman with asymptomatic double recurrence of her cerebral AVM after angiographically proven complete resection. To the authors' knowledge, this patient represents the first case with double de novo asymptomatic recurrence of Spetzler-Martin grade I AVM. Also, she represents the first case with unique AVM criteria in each recurrence.

  18. The Double Star Orbit Initial Value Problem

    Science.gov (United States)

    Hensley, Hagan

    2018-04-01

    Many precise algorithms exist to find a best-fit orbital solution for a double star system given a good enough initial value. Desmos is an online graphing calculator tool with extensive capabilities to support animations and defining functions. It can provide a useful visual means of analyzing double star data to arrive at a best guess approximation of the orbital solution. This is a necessary requirement before using a gradient-descent algorithm to find the best-fit orbital solution for a binary system.

  19. Enhanced double patterning decomposition using lines encoding

    Directory of Open Access Journals (Sweden)

    Khaled M. Soradi

    2016-09-01

    Full Text Available Double patterning photolithography (DPL is considered one of the best solutions used for enabling 32 nm/22 nm technology. In this paper, we propose a new technique for double patterning post decomposition conflict resolution. The algorithm is based on lines positions encoding followed by code pattern matching. Experimental results show that the usage of encoded patterns decreases the time needed for pattern matching and increases the matching accuracy. The overall manual problem solution time is reduced to about 1%.

  20. Double sequential defibrillation for refractory ventricular fibrillation.

    Science.gov (United States)

    El Tawil, Chady; Mrad, Sandra; Khishfe, Basem F

    2017-12-01

    A 54-year-old suffered from an out-of-hospital cardiac arrest. Compressions were started within minutes and the patient was in refractory ventricular fibrillation despite multiple asynchronized shocks and maximal doses of antiarrhythmic agents. Double sequential defibrillation was attempted with successful Return Of Spontaneous Circulation (ROSC) after a total of 61min of cardiac arrest. The patient was discharged home neurologically intact. Double sequential defibrillation could be a simple effective approach to patients with refractory ventricular fibrillation. Copyright © 2017 Elsevier Inc. All rights reserved.

  1. Facility Location with Double-peaked Preferences

    DEFF Research Database (Denmark)

    Filos-Ratsikas, Aris; Li, Minming; Zhang, Jie

    2015-01-01

    We study the problem of locating a single facility on a real line based on the reports of self-interested agents, when agents have double-peaked preferences, with the peaks being on opposite sides of their locations. We observe that double-peaked preferences capture real-life scenarios and thus...... complement the well-studied notion of single-peaked preferences. We mainly focus on the case where peaks are equidistant from the agents’ locations and discuss how our results extend to more general settings. We show that most of the results for single-peaked preferences do not directly apply to this setting...

  2. Simulation Results of Double Forward Converter

    Directory of Open Access Journals (Sweden)

    P. Vijaya KUMAR

    2009-12-01

    Full Text Available This work aims to find a better forward converter for DC to DC conversion.Simulation of double forward converter in SMPS system is discussed in this paper. Aforward converter with RCD snubber to synchronous rectifier and/or to current doubleris also discussed. The evolution of the forward converter is first reviewed in a tutorialfashion. Performance parameters are discussed including operating principle, voltageconversion ratio, efficiency, device stress, small-signal dynamics, noise and EMI. Itscircuit operation and its performance characteristics of the forward converter with RCDsnubber and double forward converter are described and the simulation results arepresented.

  3. Dividends Provisions in Croatian Double Taxation Agreements

    Directory of Open Access Journals (Sweden)

    Marjeta Tomulić Vehovec

    2007-03-01

    Full Text Available This paper analyzes the provisions concerning dividends in the double taxation avoidance agreements concluded by the Republic of Croatia. Since the base for taxation is necessarily laid down in domestic law, Croatian legislation is examined as well. The author primarily discusses dividends provisions in four agreements signed with Germany, Austria, Switzerland and Slovenia, in addition to analyzing the differences from and similarities with the OECD Model Convention. Second, the paper briefly explains the methods for eliminating double taxation on income from dividends. Finally, it addresses the changes necessary for accession to the European Union.

  4. Double-partition Quantum Cluster Algebras

    DEFF Research Database (Denmark)

    Jakobsen, Hans Plesner; Zhang, Hechun

    2012-01-01

    A family of quantum cluster algebras is introduced and studied. In general, these algebras are new, but sub-classes have been studied previously by other authors. The algebras are indexed by double parti- tions or double flag varieties. Equivalently, they are indexed by broken lines L. By grouping...... together neighboring mutations into quantum line mutations we can mutate from the cluster algebra of one broken line to another. Compatible pairs can be written down. The algebras are equal to their upper cluster algebras. The variables of the quantum seeds are given by elements of the dual canonical basis....

  5. Double-continuum wave functions and double-photoionization cross sections of two-electron systems

    International Nuclear Information System (INIS)

    Tiwary, S.N.

    1996-09-01

    The present review briefly presents the growing experimental as well as theoretical interests in recent years in the double-continuum wave functions and double-photoionization cross sections of two-electron systems. The validity of existing double-continuum wave functions is analyzed and the importance of electronic correlations in both the initial as well as final states wave functions involved in the transition amplitude for double-photoionization process is demonstrated. At present, we do not have comprehensive and practical double-continuum wave functions which account the full correlation of two-electron in the continuum. Basic difficulties in making accurate theoretical calculations of double ionization by a single high energy photon especially in the vicinity of the threshold, where the correlation plays an important role, are discussed. Illuminating, illustrative and representative examples are presented in order to show the present status and the progress in this field. Future challenges and directions, in high-precision double-photoionization cross sections calculations, have been discussed and suggested. (author). 133 refs, 9 figs

  6. Double parton scattering in the ultraviolet. Addressing the double counting problem

    Energy Technology Data Exchange (ETDEWEB)

    Diehl, Markus [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Gaunt, Jonathan R. [Nikhef Theory Group, Amsterdam (Netherlands); Amsterdam VU Univ. (Netherlands)

    2016-11-15

    An important question in the theory of double parton scattering is how to incorporate the possibility of the parton pairs being generated perturbatively via 1→ 2splitting into the theory, whilst avoiding double counting with single parton scattering loop corrections. Here, we describe a consistent approach for solving this problem, which retains the notion of double parton distributions (DPDs) for individual hadrons. Further, we discuss the construction of appropriate model DPDs in our framework, and the use of these to compute the DPS part, presenting DPS 'luminosities' from our model DPDs for a few sample cases.

  7. Formation of double galaxies by tidal capture

    International Nuclear Information System (INIS)

    Alladin, S.M.; Potdar, A.; Sastry, K.S.

    1975-01-01

    The conditions under which double galaxies may be formed by tidal capture are considered. Estimates for the increase in the internal energy of colliding galaxies due to tidal effects are used to determine the magnitudes Vsub(cap) and Vsub(dis) of the maximum relative velocities at infinite separation required for tidal capture and tidal disruption respectively. A double galaxy will be formed by tidal capture without tidal disruption of a component if Vsub(cap)>Vsub(i) and Vsub(cap)>Vsub(dis) where Vsub(i) is the initial relative speed of the two galaxies at infinite separation. If the two galaxies are of the same dimension, formulation of double galaxies by tidal capture is possible in a close collision either if the two galaxies do not differ much in mass and density distribution or if the more massive galaxy is less centrally concentrated than the other. If it is assumed as statistics suggest, that the mass of a galaxy is proportional to the square of its radius, it follows that the probability of the formation of double galaxies by tidal capture increases with the increase in mass of the galaxies and tidal distribution does not occur in a single collision for any distance of closest approach of the two galaxies. (Auth.)

  8. Double charge exchange of pions on nuclei

    International Nuclear Information System (INIS)

    Dzhibuti, R.I.; Kezerashvili, R.Y.

    1985-01-01

    An analysis is made of the results of experimental and theoretical studies during the last ten years of a unique process: double charge exchange of pions on nuclei. On the one hand, the commissioning of meson factories and the use of new and more accurate experimental methods have led to the accumulation of rich and reliable material for not only light but also medium and heavy nuclei. On the other hand, the development and application of new microscopic theoretical approaches have led to a deepening of our ideas about the mechanism of these exotic reactions at low, intermediate, and high energies. The currently existing methods of theoretical investigation and all possible reaction mechanisms are considered. Particular attention is devoted to double charge exchange of pions on the lightest nuclei, for the theoretical description of which it is possible to use the well-developed methods for investigating few-particle systems. The experimental investigations of double-isobar analog and nonanalog transitions in the reaction of double charge exchange are systematized

  9. State dynamics of a double sandbar system

    NARCIS (Netherlands)

    Price, T.D.; Ruessink, B.G.

    2011-01-01

    A 9.3-year dataset of low-tide time-exposure images from Surfers Paradise, Northern Gold Coast, Australia was used to characterise the state dynamics of a double sandbar system. The morphology of the nearshore sandbars was described by means of the sequential bar state classification scheme of

  10. Nuclear structure and double beta decay

    International Nuclear Information System (INIS)

    Vogel, P.

    1988-01-01

    Double beta decay is a rare transition between two nuclei of the same mass number A involving a change of the nuclear charge Z by two units. It has long been recognized that the Oν mode of double beta decay, where two electrons and no neutrinos are emitted, is a powerful tool for the study of neutrino properties. Its observation would constitute a convincing proof that there exists a massive Majorana neutrino which couples to electrons. Double beta decay is a process involving an intricate mixture of particle physics and physics of the nucleus. The principal nuclear physics issues have to do with the evaluation of the nuclear matrix elements responsible for the decay. If the authors wish to arrive at quantitative answers for the neutrino properties the authors have no choice but to learn first how to understand the nuclear mechanisms. The authors describe first the calculation of the decay rate of the 2ν mode of double beta decay, in which two electrons and two antineutrinos are emitted

  11. Double Tracks revegetation and monitoring plan

    International Nuclear Information System (INIS)

    1997-07-01

    This document is a reclamation plan for short-term and long-term stabilization of land disturbed by activities associated with interim clean-up of radionuclide-contaminated surface soil at the Double Tracks site. This document has been prepared to provide general reclamation practices and procedures that will be followed during restoration of the cleanup site. Reclamation demonstration plots were established near the site in the fall of 1994 to evaluate the performance of several native species and to evaluate different irrigation strategies. Results of the study at Double Tracks, as well as the results from numerous studies conducted at other sites (Area 11 and Area 19 of the Nevada Test Site), have been summarized and incorporated into this final reclamation plan for the interim cleanup of the Double Tracks site, located northwest of the Nevada Test Site on the Nellis Air Force Range. Surface soils at Double Tracks were contaminated as a result of the detonation of a device containing plutonium and depleted uranium using chemical explosives. The total amount of Pu deposited on the site was between 980 and 1,600 grams and was scattered downwind south of the detonation site. Short-term stabilization consists of the application of a chemical soil stabilizer that is applied immediately following excavation of the contaminated soils to minimize Pu resuspension. Long-term stabilization is accomplished by the establishment of a permanent vegetation

  12. On double Hurwitz numbers with completed cycles

    NARCIS (Netherlands)

    Shadrin, S.; Spitz, L.; Zvonkine, D.

    2012-01-01

    In this paper, we collect a number of facts about double Hurwitz numbers, where the simple branch points are replaced by their more general analogues: completed (r + 1)-cycles. In particular, we give a geometric interpretation of these generalized Hurwitz numbers and derive a cut-and-join operator

  13. Three Cell Fusions during Double Fertilization.

    Science.gov (United States)

    Sprunck, Stefanie; Dresselhaus, Thomas

    2015-05-07

    Fertilization of both egg and central cell is a major distinguishing feature of flowering plants. Now, Maruyama et al. report a third cell fusion event between the persistent synergid and the fertilized central cell shortly after double fertilization in Arabidopsis. This causes rapid dilution of pollen tube attractant(s), preventing polytubey. Copyright © 2015 Elsevier Inc. All rights reserved.

  14. Salinity transfer in bounded double diffusive convection

    NARCIS (Netherlands)

    Yang, Yantao; van der Poel, Erwin; Ostilla Monico, Rodolfo; Sun, Chao; Verzicco, Roberto; Grossmann, Siegfried; Lohse, Detlef

    2015-01-01

    The double diffusive convection between two parallel plates is numerically studied for a series of parameters. The flow is driven by the salinity difference and stabilised by the thermal field. Our simulations are directly compared with experiments by Hage & Tilgner (Phys. Fluids, vol. 22, 2010,

  15. Oxygen isotope fractionation in double carbonates.

    Science.gov (United States)

    Zheng, Yong-Fei; Böttcher, Michael E

    2016-01-01

    Oxygen isotope fractionations in double carbonates of different crystal structures were calculated by the increment method. Synthesis experiments were performed at 60 °C and 100 °C to determine oxygen and carbon isotope fractionations involving PbMg[CO3]2. The calculations suggest that the double carbonates of calcite structure are systematically enriched in (18)O relative to those of aragonite and mixture structures. Internally consistent oxygen isotope fractionation factors are obtained for these minerals with respect to quartz, calcite and water at a temperature range of 0-1200 °C. The calculated fractionation factors for double carbonate-water systems are generally consistent with the data available from laboratory experiments. The experimentally determined fractionation factors for PbMg[CO3]2, BaMg[CO3]2 and CaMg[CO3]2 against H2O not only fall between fractionation factors involving pure carbonate end-members but are also close to the calculated fractionation factors. In contrast, experimentally determined carbon isotope fractionation factors between PbMg[CO3]2 and CO2 are much closer to theoretical predictions for the cerussite-CO2 system than for the magnesite-CO2 system, similar to the fractionation behavior for BaMg[CO3]2. Therefore, the combined theoretical and experimental results provide insights into the effects of crystal structure and exchange kinetics on oxygen isotope partitioning in double carbonates.

  16. Wide Band to ''Double Band'' upgrade

    International Nuclear Information System (INIS)

    Kasper, P.; Currier, R.; Garbincius, P.; Butler, J.

    1988-06-01

    The Wide Band beam currently uses electrons obtained from secondary photon conversions to produce the photon beam incident on the experimental targets. By transporting the positrons produced in these conversions as well as the electrons it is possible to almost double the number of photons delivered to the experiments per primary beam proton. 11 figs

  17. Double-compression method for biomedical images

    Science.gov (United States)

    Antonenko, Yevhenii A.; Mustetsov, Timofey N.; Hamdi, Rami R.; Małecka-Massalska, Teresa; Orshubekov, Nurbek; DzierŻak, RóŻa; Uvaysova, Svetlana

    2017-08-01

    This paper describes a double compression method (DCM) of biomedical images. A comparison of image compression factors in size JPEG, PNG and developed DCM was carried out. The main purpose of the DCM - compression of medical images while maintaining the key points that carry diagnostic information. To estimate the minimum compression factor an analysis of the coding of random noise image is presented.

  18. 32 CFR 199.8 - Double coverage.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Double coverage. 199.8 Section 199.8 National... supplement CHAMPUS benefits (a health insurance policy or other health benefit plan that meets the definition... population and for which entitlement does not derive from either premium payment of monetary contribution...

  19. Double tracks test site characterization report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-05-01

    This report presents the results of site characterization activities performed at the Double Tracks Test Site, located on Range 71 North, of the Nellis Air Force Range (NAFR) in southern Nevada. Site characterization activities included reviewing historical data from the Double Tracks experiment, previous site investigation efforts, and recent site characterization data. The most recent site characterization activities were conducted in support of an interim corrective action to remediate the Double Tracks Test Site to an acceptable risk to human health and the environment. Site characterization was performed using a phased approach. First, previously collected data and historical records sere compiled and reviewed. Generalized scopes of work were then prepared to fill known data gaps. Field activities were conducted and the collected data were then reviewed to determine whether data gaps were filled and whether other areas needed to be investigated. Additional field efforts were then conducted, as required, to adequately characterize the site. Characterization of the Double Tracks Test Site was conducted in accordance with the US Department of Energy`s (DOE) Streamlined Approach for Environmental Restoration (SAFER).

  20. Bäcklund transformations and divisor doubling

    Science.gov (United States)

    Tsiganov, A. V.

    2018-03-01

    In classical mechanics well-known cryptographic algorithms and protocols can be very useful for construction of canonical transformations preserving form of Hamiltonians. We consider application of a standard generic divisor doubling for construction of new auto Bäcklund transformations for the Lagrange top and Hénon-Heiles system separable in parabolic coordinates.

  1. Statistical Convergence of Double Sequences of Order

    Directory of Open Access Journals (Sweden)

    R. Çolak

    2013-01-01

    Full Text Available We intend to make a new approach and introduce the concepts of statistical convergence of order and strongly -Cesàro summability of order for double sequences of complex or real numbers. Also, some relations between the statistical convergence of order and strong -Cesàro summability of order are given.

  2. The Discovery of the Double Helix

    CERN Multimedia

    CERN. Geneva

    2011-01-01

    Professor James D. Watson has kindly agreed to make a presentation on the 1953 finding of the Double Helix at the Cavendish Laboratory by Francis Crick and himself. Being one of the greatest scientific discoveries in human history, little else needs to be added.

  3. On the double adiabatic continuous spectrum

    International Nuclear Information System (INIS)

    Scheffel, J.

    1984-09-01

    In earlier work it has been found that the Alfven and cusp (or slow) continuous spectra can become unstable in toroidal geometry, as judged from the linearized double adiabatic equations. In this paper the validity of fluid approaches to the present problem is investigated. The physical implications of the stability conditions are discussed. (Author)

  4. An Optimal Double Inequality for Means

    Directory of Open Access Journals (Sweden)

    Qian Wei-Mao

    2010-01-01

    Full Text Available For , the generalized logarithmic mean , arithmetic mean and geometric mean of two positive numbers and are defined by , ; , , , ; , , ; , , ; and , respectively. In this paper, we give an answer to the open problem: for , what are the greatest value and the least value , such that the double inequality holds for all ?

  5. Experiments with double-SQUID qubits

    Energy Technology Data Exchange (ETDEWEB)

    Doerling, Bernhard; Poletto, Stefano; Ustinov, Alexey V. [Karlsruher Institut fuer Technologie (Germany); Castellano, Maria Gabriella; Chiarello, Fabio [Instituto Fotonica e Nanotecnologie, CNR, Roma (Italy)

    2010-07-01

    A double-SQUID qubit (flash-qubit) allows the manipulation of quantum states by very short pulses of magnetic flux, without using microwaves. It consists of an rf-SQUID with a dc-SQUID replacing the single Josephson junction. The energy potential profile is controllable by dc bias fluxes threading the two loops. The initial qubit state in a double well is prepared by applying a dc flux pulse to one loop, thereby tilting the double well so that only one of the two states remains stable. To manipulate the state of the qubit a dc flux pulse is applied to the other loop to change the potential into a single well, where coherent Larmor oscillations between the two lowest eigenstates take place. Reading out the state is once again performed in the double well situation, where our readout dc-SQUID is able to discriminate between the two computational states due to their flux difference. We hope to present measurements done on a new sample, fabricated using shadow evaporation of aluminium and silicon nitride as the dielectric.

  6. Double-balloon endoscopy: Who needs it?

    DEFF Research Database (Denmark)

    Hendel, J.W.; Vilmann, P.; Jensen, T.

    2008-01-01

    Objective. Double-balloon endoscopy (DBE) made the small bowel accessible to inspection and therapy in its entirety. However, DBE is a time-consuming procedure that requires a highly skilled endoscopist, several nurses and - more often than not - anesthesiological support. This makes the selection...

  7. Anatomic Double-bundle ACL Reconstruction

    NARCIS (Netherlands)

    Schreiber, Verena M.; van Eck, Carola F.; Fu, Freddie H.

    2010-01-01

    Rupture of the anterior cruciate ligament (ACL) is one of the most frequent forms of knee trauma. The traditional surgical treatment for ACL rupture is single-bundle reconstruction. However, during the past few years there has been a shift in interest toward double-bundle reconstruction to closely

  8. Motion in an Asymmetric Double Well

    OpenAIRE

    Brizard, Alain J.; Westland, Melissa C.

    2016-01-01

    The problem of the motion of a particle in an asymmetric double well is solved explicitly in terms of the Weierstrass and Jacobi elliptic functions. While the solution of the orbital motion is expressed simply in terms of the Weierstrass elliptic function, the period of oscillation is more directly expressed in terms of periods of the Jacobi elliptic functions.

  9. The Double Bind: The next Generation

    Science.gov (United States)

    Malcom, Lindsey E.; Malcom, Shirley M.

    2011-01-01

    In this foreword, Shirley Malcom and Lindsey Malcom speak to the history and current status of women of color in science, technology, engineering, and mathematics (STEM) fields. As the author of the seminal report "The Double Bind: The Price of Being a Minority Woman in Science", Shirley Malcom is uniquely poised to give us an insightful…

  10. An Investigation of Double Bass Vibrato Characteristics

    Science.gov (United States)

    Mick, James

    2015-01-01

    The purpose of this study was to investigate and describe various vibrato characteristics of university double bass students. The primary objectives were: (1) to describe vibrato rate and width for commonly used fingers in first, fourth, and thumb positions; (2) to investigate whether students initiate vibrato in an upward or downward direction;…

  11. Relay Feedback Analysis for Double Integral Plants

    Directory of Open Access Journals (Sweden)

    Zhen Ye

    2011-01-01

    Full Text Available Double integral plants under relay feedback are studied. Complete results on the uniqueness of solutions, existence, and stability of the limit cycles are established using the point transformation method. Analytical expressions are also given for determining the amplitude and period of a limit cycle from the plant parameters.

  12. Singapore's double festival

    International Nuclear Information System (INIS)

    Fraser, Gordon

    1990-01-01

    Coinciding with celebrations for the nation's 25th anniversary, the 25th International Conference on High Energy Physics, held in Singapore from 2-8 August, was itself a double festival, with the Standard Model of contemporary physics and CERN's new LEP electron-positron collider providing the twin themes

  13. Recoil momenta distributions in the double photoionization

    International Nuclear Information System (INIS)

    Amusia, M Ya; Liverts, E Z; Drukarev, E G; Mikhai, A I

    2014-01-01

    We calculate the distributions in recoil momenta for the high energy double photoionization of helium caused by quasifree mechanism. The distributions obtain local maxima at small values of the recoil momenta. This agrees with earlier predictions and recent experimental data. Angular correlations which reach the largest value for 'back-to-back' configuration of photoelectrons are also obtained.

  14. The Modular Construction of DNA Double Helix

    Indian Academy of Sciences (India)

    DNA or the left-handed double helix,. Z- DNA. Construction of the Module .... 12. DNA, namely, replication and transcription. In the former case, Figure 3. 8 would represent a DNA single strand-generated by splitting of the mother duplex ...

  15. The homozygosity verification for doubled haploid Japanese ...

    African Journals Online (AJOL)

    Additionally, the embryonic development and external morphology of doubled haploids were also observed and recorded. The whole process of embryonic development was divided into 19 stages based on the morphological characteristics of the developing embryo. Hatching took place 73 to 74 h after fertilization.

  16. Under the Gaze of Double Critique

    DEFF Research Database (Denmark)

    Sabih, Joshua

    2015-01-01

    Instead of the orientalist reformist paradigm as frame and episteme, Ḫaṭībī proposes a theory of double critique, critical liminality that targets, in a bi-directional movement, a Eurocentric or Orientalist discourse and an ethnocentric local discourse. Three critical concepts, constitutive of th...

  17. The invertible double of elliptic operators

    DEFF Research Database (Denmark)

    Booss-Bavnbek, Bernhelm; Lesch, Matthias; Zhu, Chaofeng

    We construct a canonical invertible double for general first order elliptic differential operators over smooth compact manifolds with boundary and derive a natural formula for the Calderon projector which yields a generalization of the famous Cobordism Theorem. Assuming symmetric principal symbol...

  18. Double-Stranded Peptide Nucleic Acids

    DEFF Research Database (Denmark)

    2001-01-01

    A novel class of compounds, known as peptide nucleic acids, form double-stranded structures with one another and with ssDNA. The peptide nucleic acids generally comprise ligands such as naturally occurring DNA bases attached to a peptide backbone through a suitable linker....

  19. Conocimientos sobre el maltrato infantil en los escenarios asistenciales de la brigada médica cubana en Oruro, Bolivia Knowledge of child abuse in the health care settings of the Cuban Medical Brigade in Oruro, Bolivia

    Directory of Open Access Journals (Sweden)

    Ivette Iglesias Pescoso

    2013-03-01

    Full Text Available Introducción: el maltrato infantil ha sido históricamente un problema social que ha afectado sobre todo, a los países en vías de desarrollo. Este se ha convertido en un fenómeno alarmante, con raíces socioculturales y psicológicas que aparecen en cualquier nivel económico, social y educativo. Objetivo: identificar los conocimientos que sobre maltrato infantil tienen los padres o tutores que acuden a las consultas de pediatría de la brigada médica cubana en Oruro. Métodos: se realizó un estudio observacional descriptivo y transversal, donde se aplicó un cuestionario validado por expertos a 185 padres o tutores de niños atendidos en la(s consulta(s de Pediatría de la brigada médica cubana, en el Departamento de Oruro, Bolivia, durante el periodo de marzo a mayo del año 2008. Resultados: no existe una adecuada información acerca del maltrato infantil y la televisión fue la vía principal de adquisición. El tipo de maltrato más identificado lo constituyó el poco afecto y cariño y como causa fundamental los problemas económicos. El criterio de identificación más predominante fue el niño con moretones y la conducta más difundida fue avisar a la policía. Solo un reducido número de las personas alegaron haber recibido algún tipo de capacitación con respecto al tema. Conclusiones: los conocimientos que tienen los padres o tutores sobre los temas relacionados con el maltrato infantil son escasos, así como la capacitación de los mismos, lo cual ofrece pautas para trazar estrategias de salud en el trabajo comunitario.Background: child abuse has historically been considered a social problem that has mainly affected the developing countries. It has become an alarming phenomenon having sociocultural and psychological roots at any levels such as economic, social and educative ones. Objective: to identify the knowledge that parents or tutors that present to the paediatric consultations of the Cuban Medical Brigade in Oruro have

  20. INVENTARIO DE CONOCIMIENTOS DEL SISTEMA DE GESTIÓN INTEGRADA DE CAPITAL HUMANO REFERENCIADO EN LAS NORMAS CUBANAS 3000: 2007 / INVENTORY OF KNOWLEDGES OF THE HUMAN CAPITAL INTEGRATED MANAGEMENT SYSTEM REFERENCED IN THE CUBAN REGULATIONS 3000: 2007

    Directory of Open Access Journals (Sweden)

    Ileana Hernández-Darias

    2011-06-01

    Full Text Available

    El sistema de normas cubanas (NC de la familia 3000, referidas al Sistema de Gestión Integrada de Capital Humano (SGICH y aprobadas en Cuba en el 2007, constituye una experiencia cubana muy particular y única en el marco de las normas de gestión organizacional internacionales y están orientadas a servir de referencia para las organizaciones que aspiran a elevar la efectividad de la gestión de su capital humano para lograr un mejor desempeño organizacional. El objetivo que se proponen las autoras de este artículo es analizar el SGICH referenciado en dichas normas y aportar a su comprensión y ulterior actualización. Se utilizó el método del análisis de contenido de la norma de vocabulario, el método de expertos, los mapas de conocimiento basados en la acción y el análisis de las interrelaciones de los procesos del sistema; los cuales evidencian como resultado que la organización del trabajo tiene mayor influencia inmediata sobre el resto de los procesos del sistema y mantiene una relativa autonomía con respecto a cambios que se producen en los otros procesos, así como que la capacitación recibe mayor afectación producto de los cambios en el sistema.

    Abstract

    The system of Cuban regulations (NC of the family 3000, regarding the Human Capital Integrated Management System (SGICH and approved in Cuba in the 2007, constitutes a very particular and only Cuban experience in the framework of the international regulations of organizational management and they are oriented to serve as reference for the organizations that aspire to elevate the effectiveness of the administration of its human capital to achieve a better organizational performance. The objective that the authors of this article pursue is to analyze the SGICH referenced in the aforementioned regulations and to contribute to its understanding and ulterior updating. It was used the method of content analysis for the vocabulary norm, the method