Sample records for ENERGIA NUCLEAR (nuclear energy)
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1

CONSIDERACIONES SOBRE LOS RESIDUOS RADIACTIVOS EN EL DEBATE DE LA ENERGÍA NUCLEAR Y SU INCLUSIÓN EN EL MODELO ENERGÉTICO DE CHILE/ CONSIDERATIONS REGARDING RADIOACTIVEWASTE IN THE DEBATE OF NUCLEAR ENERGY AND ITS INCLUSIONIN THE ENERGETIC MODEL OF CHILE

Olivares Gallardo, Alberto
2010-12-01

Resumen en español El presente trabajo intenta -en el marco del actual escenario energético en Chile, en que se ha propuesto por algunos sectores el uso de la energía nuclear para la generación de electricidad- dar algunas nociones sobre los residuos radiactivos, cuya gestión, junto a la seguridad de este tipo de instalaciones, sigue siendo un importante elemento disuasivo para llevar a cabo cualquier análisis serio sobre la posibilidad real de incorporar centrales nucleares en nuestro (mas) país. En este sentido, se examina el concepto de residuos radiactivos, así como los diversos modelos de gestión existentes para los desechos originados por la actividad de las centrales nucleares, así como los métodos utilizados para su aislamiento. Además, se observa la normativa existente en España para regular la gestión de los residuos radiactivos, haciendo mención también a las principales directrices comunitarias emanadas desde la Unión Europea para el tratamiento de estos residuos Resumen en inglés This paper tries to give an overview of the present energy scenario in Chile, where a part of the population is in favour of the use of nuclear energy to generate electricity. It deals with the management of nuclear waste, and also with the safety of this type of plants, given that both elements pose a serious threat for the acceptance of nuclear power facilities in our country. The concept of radioactive waste and the different presentday models for the management of rad (mas) ioactive waste are also looked into in detail. At a different level, we also analyze the Spanish and European regulation concerning radioactive waste disposal

Scientific Electronic Library Online (Spanish)

2

Periferia y fronteras tecnológicas: Energía nuclear y dictadura militar en la Argentina (1976-1983)

Hurtado de Mendoza, Diego
2009-09-01

Resumen en español Desde el comienzo del golpe de estado que tuvo lugar en la Argentina en marzo de 1976, el desarrollo nuclear se aceleró. La frágil economía heredada de la democracia depuesta no fue un obstáculo para el incremento significativo del presupuesto que el régimen militar decidió aplicar al área nuclear. El nuevo presidente de la Comisión Nacional de Energía Atómica (CNEA) capitán (más tarde contralmirante) Carlos Castro Madero, anunció que el gobierno invertiría (mas) 5.500 millones de dólares en esta área durante los siguientes diez años. Este artículo indaga las principales iniciativas de CNEA durante la dictadura militar (1976-1983), que apuntaron a completar el ciclo del combustible nuclear. Con este objetivo, se analiza, por un lado, la presencia de una "cultura nuclear" consolidada que promovió la orientación pacífica e industrialista en condiciones de terrorismo de estado y en un escenario macroeconómico que favoreció la desindustrialización y, por otro lado, la estrecha conexión entre las presiones de los países exportadores de tecnología nuclear y el proceso de toma de decisiones vinculado a los principales logros argentinos en el área nuclear. Por último, el análisis histórico intenta poner de manifiesto la debilidad de los marcos analíticos utilizados para interpretar los propósitos nucleares de los países periféricos. Resumen en inglés In March 1976 a military coup d'etát took place in Argentina. From the outset, Argentina's nuclear development gained momentum. The fragile economy inherited from the overthrown democracy did not prevent the military regime from significantly increasing the nuclear budget. The new president of the Argentine Atomic Energy Commission (CNEA), Captain (later Rear Admiral) Carlos Castro Madero, announced the government would invest US$ 5,500m in the nuclear development during (mas) the following ten years. This article focuses on CNEA's trajectory toward the completion of the nuclear fuel cycle during the military dictatorship period (1976-1983) by analyzing, on one side, the presence of a deep-rooted "nuclear culture" that emphasized a peaceful and industrialist orientation under adverse conditions of state terrorism and macroeconomic landscape which favored de-industrialization and, on the other side, the strong connection between the pressures from nuclear exporters and the decision-making process involved in the main Argentine nuclear achievements. Finally, this historical analysis also attempts to shed light over the weakness of the analytical frames usually used in interpreting the peripheral countries' nuclear goals.

Scientific Electronic Library Online (Spanish)

3

IMPLEMENTACIÓN DEL MÉTODO DEL GRADIENTE ANALÍTICO DE LA ENERGÍA EN LA TEORÍA DEL ORBITAL MOLECULAR NUCLEAR Y ELECTRÓNICO/ IMPLEMENTATION OF THE ANALYTICAL ENERGY GRADIENT METHOD IN THE NUCLEAR AND ELECTRONIC MOLECULAR ORBITAL THEORY/ EXECUÇÃO DO MÉTODO DE INCLINAÇÃO ANALÍTICO DA ENERGIA NA TEORIA DO ORBITAL MOLECULAR NUCLAER E ELETRÔNICO

González, Sergio A; Reyes, Andrés
2009-04-01

Resumen en portugués Com a finalidade de otimizar as geometrias médias de sistemas moleculares utilizando a teoria do orbital molecular nuclear e eletrônico (OMNE), se deduziu a expressão para o cálculo do gradiente Analítico da energia a nível de Hartree-Fock, para qualquer tipo de espécie quântica. A implementação computacional se realizou dentro do pacote APMO (Any-Particle Molecular Orbital), e com a finalidade de comprovar a correta implementação do método foram calculadas a (mas) s moléculas modelo H2,HFeH2O, por meio de métodos numéricos e analíticos. O uso de derivadas analíticas dentro do formalismo OMNE vai permitir um cálculo mais eficiente da estrutura núcleo-eletrônica de sistemas moleculares com o pacote AMPO. Resumen en español Con el fin optimizar las geometrías promedio de sistemas moleculares utilizando la teoría del orbital molecular nuclear y electrónico (OMNE), se dedujo la expresión para el cálculo del gradiente analítico de la energía a nivel de teoría Har-tree-Fock, para cualquier tipo de especie cuántica. La implementación computacional se realizó dentro del paquete APMO (Any-Particle Molecular Orbital), y con el fin de comprobar la correcta implementación del método se ca (mas) lcularon las moléculas modelo H2,HF y H2O, por medio de métodos numéricos y analíticos. El uso de derivadas analíticas dentro del formalismo OMNE permitirá el cálculo más eficiente de la estructura núcleo-electrónica de sistemas moleculares con el paquete APMO. Resumen en inglés In order to optimize the average geometries of molecular systems using the nuclear and electronic molecular orbital theory (NEMO), we have deducted the expression for calculating the analytical gradient of the energy in the Hartree-Fock theory, for any kind quantum specie. The implementation was done within the computational package APMO (Any-Particle Molecular Orbital) and in order to verify the correct implementation of the method, we have calculated the model molecules (mas) H2, HF and H2O, with numerical and analytical methods. With the use of analytical derivatives within of the OMME formalism, we will have a more efficient calculation of the nuclear-electronic structure of molecular systems with the APMO package.

Scientific Electronic Library Online (Spanish)

4

RECEPTORES NUCLEARES Y REGULACIÓN DE LA EXPRESIÓN GÉNICA POR ÁCIDOS GRASOS POLIINSATURADOS: ALGO MÁS QUE PRODUCCIÓN DE ENERGÍA Y ESENCIALIDAD/ NUCLEAR RECEPTORS AND REGULATION OF GENE EXPRESSION BY POLYUNSATURATED FATTY ACIDS: SOMETHING MORE THAN ENERGY PRODUCTION AND ESSENTIALITY

Sanhueza C, Julio; Valenzuela B, Alfonso
2006-08-01

Resumen en español La regulación de la expresión de los genes está determinada por una serie de moléculas que en su conjunto modulan la activación o la represión de un gen o de un grupo de genes. Esta regulación requiere de diferentes receptores nucleares, que en la forma de homodímeros o heterodímeros interactúan con el DNA en lugares específicos denominados dominios de interacción del DNA. La unión del receptor al DNA es determinada por la presencia de ligandos específicos. (mas) El resultado final de este complejo proceso produce la activación o la represión de la expresión de un gen. Numerosas moléculas actúan como ligandos de receptores nucleares, siendo los ácidos grasos y sus derivados uno de los ligandos de origen nutricional más importantes. Los ácidos grasos poliinsaturados, al actuar como ligandos de receptores nucleares desencadenan una gran variedad de respuestas celulares; inducen la diferenciación de adipocitos, modifican la resistencia a la insulina, regulan la presión vascular, inducen la apoptósis de células tumorales, modifican el metabolismo de los carbohidratos, etc. Esta nueva función de los ácidos grasos los identifica como importantes reguladores de los genes, con lo cual actualmente se les relaciona con algo más que la producción de energía y la esencialidad. Este trabajo revisa la estructura y función de los receptores nucleares y el rol regulador de los ácidos grasos en la expresión de los genes Resumen en inglés Regulation of gene expression is controlled by many molecules which acting in concert may activate o repress a gene or a group of genes. The regulation requires of different nuclear receptors which as homodimers or heterodimers interact with DNA trough the so called DNA interaction domains. The DNA-receptor binding is determined by the presence of specific ligands. The final action of this complex is the activation or repression of gene expression. A number of molecules m (mas) ay act as ligands of nuclear receptors, being fatty acids and their derivatives one of the most important ligands of nutritional origin. Polyunsaturated fatty acids, acting as ligands of nuclear receptors may modulate a wide variety of molecular responses, such as adipocite differentiation, modifying insulin resistance, regulating vascular pressure, inducing apoptosis of tumor cells, modifying carbohydrate metabolism, etc. This new function of fatty acids as important modulators of gene expression goes beyond to the production of energy and essentiality. This work reviews the structure and function of nuclear receptors and the regulatory role of fatty acids in gene expression

Scientific Electronic Library Online (Spanish)

5

De "átomos para la paz" a los reactores de potencia: Tecnología y política nuclear en la Argentina (1955-1976)

Hurtado de Mendoza, Diego
2005-01-01

Resumen en español Durante el período 1955-76, el programa nuclear argentino se integró a la arena internacional; su Comisión Nacional de Energía Atómica construyó cuatro reactores de investigación, adquirió a una empresa alemana y puso en marcha el primer reactor de potencia Atucha I, y compró a una empresa canadiense un segundo reactor de potencia. En este artículo se examinan estos desarrollos en relación con el contexto político local y con el panorama nuclear internacional. (mas) En particular, se analizan la política diplomática argentina frente a los tratados de Tlatelolco (1967) y No Proliferación de Armas Nucleares (1968) y las consecuencias de las presiones internacionales posteriores a la explosión atómica realizada por la India en 1974. Finalmente, se comparan las expectativas del programa nuclear argentino con las de Brasil y México a comienzos de la década de 1970. Resumen en inglés During the 1955-76 period, Argentina's nuclear program entered the international arena, as the Argentine Atomic Energy Commission constructed four research reactors, purchased the first power reactor Atucha I from a German firm, put it into operation and acquired a second power reactor from a Canadian firm. This article examines these developments in connection with the unstable local political context and the international nuclear landscape. Particularly, it analyzes Arg (mas) entine diplomatic policy opposing to Tlatelolco Treaty (1967) and Non Proliferation of Nuclear Weapons Treaty (1968) and the consequences derived from international pressures following India's atomic explosion in 1974. Finally, Argentina's nuclear program expectations are compared with those claimed by Brazil and Mexico in the early the 1970s.

Scientific Electronic Library Online (Spanish)

6

Aplicacion de la medicina nuclear en el Instituto de Hematología e Inmunología: Resultados más relevantes/ Most relevant accomplishments from the application of nuclear medicine in the Institute of Hematology and Immunology

Fundora Sarraff, Teresa A; Fernández Delgado, Norma; Gautier du Défaix Gómez, Hortensia; Macías Abraham, Consuelo; del Valle Pérez, Lázaro; Martínez Antuña, Gisela; Hernández Ramírez, Porfirio; Ballester Santovenia, José M
2004-08-01

Resumen en español La aplicación de la medicina nuclear en el Instituto de Hematología e Inmunología por varios colectivos científicos multidisciplinarios, ha contribuido al desarrollo de estas especialidades en Cuba, lo que ha sido reconocido por la Organización Internacional de la Energía Atómica, gracias a la alta calidad de las técnicas empleadas y los resultados alcanzados que se encuentran al nivel de otros servicios en países desarrollados. Se ha beneficiado a cientos de pac (mas) ientes, con el diagnóstico y el seguimiento de enfermedades hematológicas, inmunológicas y de otras especialidades, que ha posibilitado una mejoría de la calidad de vida de estos. Se han obtenido resultados originales en policitemias, anemias, síndromes mielodisplásicos y otros trastornos hematológicos, inmunológicos, neuritis, así como en individuos afectados por accidentes nucleares, de impacto, con la aplicación de estas técnicas en biología molecular, en el diagnóstico prenatal de la anemia drepanocítica y la hemofilia, y con la incorporación de técnicas novedosas como la radiosinoviortesis Resumen en inglés The application of nuclear medicine by several multidisciplinary scientific teams working at the Institute of Hematology and Immunology has helped in the development of both specialties in Cuba thanks to the high quality of the techniques used and to the results achieved that are similar to other services in the developed countries. The above-mentioned has been recognized by the International Atomic Energy Organization. Hundreds of patients have benefited from the diagnos (mas) is and the follow-up of hematological, immune diseases and other types of illness, which has made it possible to improve their quality of life. Original results has been reached in diagnosis of policytemia, anemia, myeolodisplastic syndromes and other khematologicalk, immunological disorders, neuritis as well as in those individuals affected by nuclear accidents; also impact results have been attained with the application of this technique in the field of molecular biology and in the prenatal diagnosis of sickle cell anemia, and with the introduction of state-of-the art techniques such as radiosinoviortesis

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7

Los bio-combustibles y la alimentación humana/ Bio-fuels and human nutrition/ Os biocombustíveis e a alimentação humana

Laine, Jorge
2008-01-01

Resumen en portugués O esgotamento das reservas mundiais de hidrocarbonetos fósseis prognosticado para o presente século, tornará necessária a implementação de três alternativas: 1) uso de biocombustíveis, 2) energia solar através de células fotovoltaicas, e 3) energia nuclear e outras. Ainda que o uso dos biocombustíveis seja a alternativa mais próxima, não deve tomar-se como definitiva, já que pode atentar contra o subministro de alimentos para o ser humano. Os bio-combustíve (mas) is podem melhor considerar-se como um veículo de transição entre a era dos combustíveis fósseis e a era das novas alternativas energéticas. Resumen en español El agotamiento de las reservas mundiales de hidrocarburos fósiles pronosticado para el presente siglo, hará necesario la implementación de tres alternativas: 1) uso de bio-combustibles, 2) energía solar a través de celdas fotovoltaicas, y 3) energía nuclear y otras. Aunque el uso de los bio-combustibles es la alternativa más cercana, no debe tomarse como definitiva, ya que puede atentar contra el suministro de alimentos para el ser humano. Los bio-combustibles pued (mas) en mejor considerarse como un vehículo de transición entre la era de los combustibles fósiles y la era de las nuevas alternativas energéticas. Resumen en inglés The exhaustion of the world fossil hydrocarbon reserves predicted for the present century will make it necessary to implement three emergent alternatives: 1) the use of bio-fuels, 2) solar energy through photovoltaic cells, and 3) nuclear energy and others. Although the use of bio-fuels is the nearest alternative, it should not be taken as definitive, because it can upset human food supply. Bio-fuels could be better considered as a transition vehicle between the fossil fuel age and the age of new energy alternatives.

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8

Plantear utopías: La formación de la comunidad científica: CNEA (1950-1955)

Marzorati, Zulema
2003-12-01

Resumen en español En 1950 se creó en la Argentina la Comisión Nacional de Energía Atómica. En ella se fue conformando una comunidad científica que luego de su participación en la Primera Conferencia "Átomos para la Paz" realizada en Ginebra en 1955, fue reconocida por sus pares a nivel internacional. Nuestro objetivo es analizar el desarrollo científico-tecnológico alcanzado en la CNEA por ese conjunto de científicos durante su etapa inicial. En la investigación, además de la u (mas) tilización de fuentes escritas convencionales y bibliografía, se han realizado entrevistas a científicos nucleares que actuaron en ese período, con la intención de obtener una mayor comprensión sobre las prácticas de los actores sociales y acerca de la relación entre el contexto histórico y la institución. Resumen en inglés The International Board of Atomic Energy (Comisión Nacional de Energía Atómica - CNEA) was created in 1950. In this way a scientific community was established in it. After its participation in The First International Conference "Atoms for Peace" which was held in Geneva in 1955, this scientific community was acknowledged by its peers all over the world. Our aim is to analyze the scientific- technological development achieved by those scientists in the CNEA in its early (mas) stages. This investigation has developed conventional written resources, compiled bibliography and has interviewed some nuclear scientists who worked in that period, to achieve a better understanding of the social actors' practice and about the relation between the historical context and the institution.

Scientific Electronic Library Online (Spanish)

9

ESTUDIO DEL EFECTO DE ISOTÓPO DE HIDRÓGENO EN LOS COMPLEJOS M-HH-F (M=Li, Na)/ INVESTIGATION OF THE HYDROGEN ISOTOPE EFFECT ON THE M-HH-F (M=Li, Na) COMPLEXES/ ESTUDO DO EFEITO DO ISÓTOPO DO HIDROGÊNIO NO COMPLEXOS M-HH-F (M=Li, Na)

Ortiz-Verano, Ismael; González, Sergio A; Reyes, Andrés
2009-04-01

Resumen en portugués Foi estudado teoricamente o efeito do isótopo de hidrogênio sobre geometria, distribuição do carga eletrônica, a estabilidade relativa da energia e da formação do complexos lineares do tipo M-X-Y-F e todos os seus isotopólogos do hidrogênio (M = Li, Na, X, Y = H, D, T). Estes estudos foram realizados com o pacote computacional APMO para um nível da teoria Hartree-Fock eletrônica e nuclear. Os resultados são do acordo com os resultados relatados por outros autores que utilizam métodos do estrutura eletrônica convencionais. Resumen en español Se estudió teóricamente el efecto de isotópo de hidrógeno sobre la geometría, la distribución de carga electrónica, la estabilidad relativa y la energía de formación de complejos lineales tipo M-X-Y-F y todos sus isotopólogos de hidrógeno (M=Li, Na; X, Y= H, D, T). Estos estudios fueron realizados con el paquete computacional APMO a un nivel de teoría Hartree-Fock electrónico y nuclear. Los resultados obtenidos son acordes con resultados reportados por otros autores que usan métodos de estructura electrónica convencional. Resumen en inglés We have carried out a theoretical investigacion of the hydrogen isotope effects on the geometry, the electronic charge distribution, the relative stability and the energy of formation of linear complexes of the type M-X-Y-F and all their hydrogen istopologues (M = Li, Na; X, Y= H, D, T). For this study we have utilized the APMO software at a nucleo-electronic Hartree-Fock level of theory. Our results are agreement with other reported theoretical data based on conventional electronic structure methods.

Scientific Electronic Library Online (Spanish)

10

APLICACIÓN DE UN PROTOCOLO DE LEVANTAMIENTO RADIOMETRICO EN INSTALACIONES DE RADIO-DIAGNOSTICO/ APPLICATION OF A RADIOMETRIC INVENTORY PROTOCOL IN RADIODIAGNOSTICS FACILITIES

Leyton L, Fernando; Ubeda C, Carlos; Delgado R, Otto; Espinoza L, Alfonso; Díaz R, Jorge; Oyarzún C, Carlos; Mansilla P, Santiago
2007-01-01

Resumen en español Se realizó un Levantamiento Radiométrico en dos servicios de imaginología con un total de 7 salas de radiodiagnóstico evaluadas. Se utilizó metodología del Protocolo de Control de Calidad en Radiodiagnóstico ARCAL (Acuerdo de Cooperación Regional para la promoción de la ciencia nuclear y tecnología en América Latina y el Caribe) XLIX del Organismo Internacional de Energía Atómica (OIEA)(1). Se calcularon las tasas de dosis efectiva en superficie en diferentes (mas) posiciones de interés desde el punto de vista de la protección radiológica. El 85% de las posiciones evaluadas presentan tasas de dosis efectivas que cumplen con los valores límites establecidos en el protocolo ARCAL XLIX. No obstante el personal ocupacionalmente expuesto (POE) ubicado a un metro del simulador (área controlada)(2) supera hasta en un factor 7 el límite propuesto en ARCAL XLIX Resumen en inglés A radiometric study was carried out in two Radiodiagnostic Units, with seven rooms being assessed. Methodology of the Radiodiagnostics Quality Control Protocol ARCAL XLIX (Cooperation Agreement for the Promotion of Nuclear Science and Technology in Latin America and the Caribbean) of the International Atomic Energy Agency (IAEA) [1] was used. From radiation protection viewpoint, effective dose rates on surface for different relevant positions were calculated.The eigthy-fi (mas) ve percent (85%) of assessed positions showed effective dose rates within limit values established in the ARCAL XLIX Protocol. Nevertheless, occupationally-exposed personnel (OEP) placed at position A (controlled area)[2] -one meter distant from the phantom- was found to be exceeding by 7 the ARCAL XLIX advised values

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11

APMO: UN PROGRAMA COMPUTACIONAL PARA EL ESTUDIO DE EFECTOS CUÁNTICOS NUCLEARES MEDIANTE LA TEORÍA DEL ORBITAL MOLECULAR ELECTRÓNICO Y NO ELECTRÓNICO/ APMO: A COMPUTER PROGRAM BASED ON THE ELECTRONIC AND NON-ELECTRONIC MOLECULAR ORBITAL THEORY FOR STUDIES OF NUCLEAR QUANTUM EFFECTS/ APMO: UM PROGRAMA COMPUTACIONAL PARA O ESTUDO DOS EFEITOS QUÂNTICOS NUCLEARES POR MEIO DO TEORIA DO ORBITAL MOLECULAR ELETRÔNICO E NÃO - ELETRÔNICO

González, Sergio A.; Aguirre, Néstor F.; Reyes, Andrés
2008-04-01

Resumen en portugués Com a finalidade de estudar teoricamente fenômenos cujos núcleos atômicos apresentam comportamento quântico, desenvolvemos o pacote computacional APMO (Any-Particle Molecular Orbital). Este implementa o método de orbitais moleculares nucleares e eletrônicos (OMNE) no nível da teoria Hartree-Fock (HF), onde tanto núcleos como elétrons se apresentam como funções de onda. Para comprovar a utilização correta do método, se realizaram cálculos da estrutura eletr� (mas) �nica regular e do núcleo eletrônico das moléculas H_2 y LiH. Os componentes de energia calculados seguem as tendências e estão na mesma ordem de magnitude de cálculos similares reportados na literatura. Diferentemente de outros pacotes que utilizam o método OMNE, o nosso foi desenhado para estudar sistemas de qualquer número de espécies quânticas. Resumen en español Con el fin de estudiar teóricamente fenómenos en donde los núcleos atómicos presentan comportamiento cuántico, hemos desarrollado el paquete computacional APMO (Any-Particle Molecular Orbital). Éste implementa el método de orbitales moleculares nucleares y electrónicos (OMNE) a un nivel de teoría Hartree- Fock (HF), en el que tanto núcleos como electrones se representan como funciones de onda. Para comprobar la correcta implementación del método se realizaron (mas) cálculos de estructura electrónica regular y núcleo- electrónica de las moléculas H2 y LiH. Las componentes de energía calculadas siguen las tendencias y están en el mismo orden de magnitud de cálculos similares reportados en la literatura. A diferencia de otros paquetes que implementan el método OMNE, el nuestro fue diseñado para estudiar sistemas con cualquier número de especies cuánticas. Resumen en inglés With the aim of studying phenomena where atomic nuclei have a quantal behavior, we have developed the APMO (Any-Particle Molecular Orbital) software package. This implements the nuclear and electronic molecular orbital approach (NEMO) at a Hartree-Fock level of theory, where both nuclei and electrons are represented as wave functions. To verify the correct implementation of the method, a number of electronic and nuclear-electronic calculations were carried out on H2 and L (mas) iH molecules. The calculated energy components follow the trends and are of the same order of magnitude of similar calculations reported in the literature. In contrast to other packages that implement the NEMO approach, ours is designed to allow for studying systems with any number of quantum particles.

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12

Sarcoma radioinducido en el área de cabeza y cuello

Mijares Briñez, Alirio; Da Silva, Manuel; Nuñez, Carlos; Suárez, Carmen María; Brito, Edgar; Garriga, Esteban; Agudo, Esteban; Goncalvez, Luis; Pacheco, Carlos F; Anzola, Jesús Franco; Nuñez, Patricia; Vera Gimón, Andrés
2006-09-01

Resumen en español El desarrollo de sarcomas durante el curso de tratamiento de una lesión maligna previa es inusual. El origen de estos tumores y los factores promotores de este son controversiales. Hay diversos reportes que afirman categóricamente la inducción de apariciones de sarcomas posterior a administración de radioterapia. Pacientes curados de una lesión maligna tienen una significativa probabilidad de desarrollar otros tumores. Numerosas han sido las publicaciones han documen (mas) tado la frecuencia de segundas neoplasias malignas asociadas con radioterapia en pacientes que han sobrevivido a su tumor primario. Hay muchos ejemplos que podemos mencionar de carcinogenesis en humanos posterior a irradiación: Individuos que han sido tratados con radioterapia para espondilitis anquilosante, uso de Rayos X en pacientes embarazadas, tratamiento de tiña capitis, uso de energía nuclear en conflictos bélicos, etc. El caso que describimos es un joven con antecedente de rabdomiosarcoma alveolar en parpado inferior y diez y siete años más tarde; se presenta con leiomiosarcoma radioinducido a nivel etmoidal. Se discute su manejo y se revisa la literatura a partir de su descripción por Cahan y colegas en 1948. Resumen en inglés The development of sarcomas during the course of treatment of a previous wicked lesion is uncommon. The origin of these tumours and the factors promoters of this they are controversial. There are diverse reports that they affirm the later induction of appearances of sarcomas categorically to radiotherapy administration. Cured patients of a wicked lesion have a significant probability of developing other tumours. Numerous publications they have been documented the frequenc (mas) y of second tumours associated with radiotherapy in patients that have survived their primary tumour. There are many examples that we can mention of carcinogenesis in human later to irradiation: Individuals that have been treated with radiotherapy for espondilitis anquilosante, use of x rays in pregnant patients, treatment of tinea capitis, use of nuclear energy in war conflicts, etc. The case that we describe is a young patient with antecedent of alveolar rabdomiosarcoma and seventeen years later; he has leiomiosarcoma radiation - induced etmoidal. We discuss their handling and the literature is revised starting from description by Cahan et al in 1948.

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13

Evaluación de la corrosión inducida por bacteria sulfato reductora en un acero inoxidable 316L

Figueroa de Gil, Yelitza; Camero, Sonia; Prin, José L; Réquiz, Roberto
2008-06-01

Resumen en español Los aceros inoxidables 316L son ampliamente usados en las  industrias química, petroquímica, térmica y nuclear debido a su excelente resistencia a la corrosión, buenas propiedades mecánicas a elevadas temperaturas, además que pueden ser soldados por procesos muy variados. Sin embargo, estos aceros son susceptibles a la corrosión inducida por microorganismos, generando muchas veces daños significativos, que involucran pérdidas cuantiosas a la industria. En este e (mas) studio se evaluó  la relación entre la microestructura y la corrosión inducida por bacterias sulfato reductoras (BSR), en un acero inoxidable austenítico 316L, soldado eléctricamente con material de aporte símil designado como electrodo ER316L. La caracterización de la microestructura y el daño por corrosión se determinó mediante microscopia electrónica de barrido (MEB) y micro-análisis químico por espectroscopia de rayos X por dispersión en la energía (EDS). Además, se realizó análisis por microscopia electrónica de transmisión (MET), para determinar las fases y precipitados presentes en las láminas del acero estudiado antes de ser sometido al daño. Los resultados muestran que el AISI 316L experimentó corrosión por efecto de BSR, es decir que la condiciones de anaerobiosis y la producción de sulfuro por las BSR  interrumpe la película pasiva formada sobre el acero, generando una corrosión localizada con las típicas picaduras. Resumen en inglés 316L stainless steel is widely used in the chemical, petrochemical, thermal, and nuclear industries because of its excellent resistance to corrosion, good mechanical properties at high temperatures, and welding applicability by different processes. This steel, however, is highly susceptible to microorganism-induced corrosion, which results in significant damage involving huge losses to industry. This study assessed the relationship between the microstructure and the corro (mas) sion induced by sulphate-reducing bacteria (SRB) in a stainless austenitic grade steel, videlicet, the 316L, electrically welded with a like filler material known as ER316 filler. The microstructural characterization and the assessment of the corrosion were estimated by scanning electron microscopy and energy dispersive X-ray spectrometry (EDS) chemical microanalysis. Furthermore, transmission electronic microscopy (TEM) was used to determine what phases and precipitates were present in the steel sheets before subjecting them to harm. The results show that AISI 316L experimented corrosion by SRB, i.e., anaerobiosis and sulphur production interrupted the passive film formed on the steel surface, thus prompting a localized corrosion featuring the typical pits and craters.

Scientific Electronic Library Online (Spanish)

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Nitrógeno y potasio en solución nutritiva para la producción de tubérculos-semilla de papa/ N and k in nutrient solution in the potato tuber seed production¹

Coraspe-León, Héctor M; Muraoka, Takashi; Ide Franzini, Vinicius; Do Prado Granja, Newton
2008-12-01

Resumen en español La papa-semilla, Solanum tuberosum L., es considerada un factor fundamental para garantizar alta productividad y buena calidad del tubérculo en el cultivo de la papa. A pesar de su importancia y el gran número de estudios sobre el cultivo de la papa, en las condiciones tropicales, las investi­gaciones existentes sobre la nutrición mineral de la producción de papa-semilla de variedades para uso industrial, tanto en campo como en ambientes protegidos, son escasas. El s (mas) istema hidropónico de producción, ya consagrado en diversos cultivos, se muestra ventajoso para la producción de semillas pre-básicas de papa, pues aumenta la productividad, reduciendo los costos y eliminando cual­quier riesgo de contaminación por patógenos de suelo. El objetivo general de la investigación fue estudiar el efecto de las interacciones de N y K usadas en solución nutritiva, sobre el desarrollo de las plantas y producción de papa semilla. El experimento fue instalado en invernadero, en las instalaciones del Centro de Energía Nuclear en la Agri­cultura (CENA), Universidad de São Paulo (USP), Brasil. Se utilizó material in vitro, de la variedad "Atlantic". Los tratamientos de dosis de N y K evaluados fueron dispuestos en un arreglo en esquema factorial 5 x 5, con 5 dosis de N y 5 de K, usando el diseño de bloques completos al azar con tres repeticiones. Hubo interacción positiva entre nitró­geno y potasio, resultando en disminución en la pérdida de peso de los tubérculos después de período de almacena­miento. En la combinación de dosis de 12,65 mmol L-1 de N y 7,03 mmol L-1 de K se obtuvo el menor porcentaje de deshidratación. Resumen en inglés The potato-seed, Solanum tuberosum L., is considered a fundamental factor to guarantee high productivity and good tuber quality in the potato crop. In spite of their importance and the great number of studies on the potato crop, under tropical conditions, investigations on the mineral nutrition in potato-seed in varieties for industrial use, as much in field as in protected conditions, are scarce. The hydroponics system production, already consecrated in diverse crops, ha (mas) s been shown as an alternative for the production of potato pre-basic seeds, due to increases in the productivity, reduction of production costs, and elimination of contami­nation for soil pathogens. The objective of this research was to evaluate the effect of N and K interactions in nutritive solution, on the production of potato seed. The experiment was carried out in greenhouse, in the Center of Nuclear Energy in the Agriculture (CENA), University of São Paulo (USP), Brazil, and we used in vitro material of the "Atlantic" variety. Five doses of N and K in a factorial arrangement (5 x 5), were established in a complete randomize block desing with three repetitions. There was positive interaction between nitrogen and potassium, which resulted in decrease of the loss of weight of tubers during the period of storage. With the combination of 12,65 and 7,03 mmol L-1 of N and cause the K the lowest percentage of dehydration.

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Absorción de formas de nitrógeno amoniacal y nítrica por plantas de papa en la producción de tubérculo-semilla/ N-nh4+ and n-no3 uptake by potato in the tuber seed production/ Absorção de formas de nitrogênio amoniacal e nitrica pela batateira na produção de tubérculo-semente

Coraspe-León, Héctor M; Muraoka, Takashi; Ide Franzini, Vinicius; Contreras Espinal, Freddy S; Ocheuze Trivelin, Paulo C
2009-03-01

Resumen en portugués O N é constituinte estrutural de proteínas, de muitos metabólitos envolvidos na síntese e transferência de energia e mesmo de ácidos nucléicos. O nitrogênio pode ser absorvido pelas plantas na forma de nitrato (NO3-) ou amônio (NH4+). A absorção de nitrato varia conforme a cultivar e intensidade luminosa como pode ser constatado em diversas culturas. O objetivo deste trabalho foi deter­minar a forma de N (N-NH4+ ou N-NO3-) mais absorvida pelas plantas de batat (mas) a na produção de tubérculos-semente, usando o isótopo 15N. O experimento foi realizado em condições de casa-de-vegetação durante os meses de agosto a novembro de 2006 nas instalações do Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo (USP), Brasil. Foi desenvolvido em vasos plásticos de 2,3 l de capacidade usando como substrato argila expandida. O delineamento experimental empregado foi o de blocos completos ao acaso com cinco tratamentos, referentes às épocas de aplicação do NH4NO3 marcado: 14, 28, 42, 56 e 70 DAT, e três repetições. Foi usada a solução nutritiva IAC, modificada quanto ao fornecimento de N, K e Ca, substituindo-se o nitrato de cálcio e nitrato de potássio pelo nitrato de amônio enriquecido com 15N. Para determinar a eficiência de utilização do N do nitrato de amônio das plantas de papa marcadas com 15N, baseou­se no princípio da diluição isotópica, considerando-se o enriquecimento em % de átomos de 15N, a quantidade de 15N na planta e descontando-se a variação natural do isótopo estável 15N. A forma preferencial de absorção do nitrogênio no estádio inicial de desenvolvimento foi a amoniacal, tornando-se a nítrica após 56 dias (formação de tubérculos). O aproveitamento de N pelas plantas, porém, foi sempre maior com a forma amoniacal aplicada em todos os estádios, com exceção aos 28 dias e no final do ciclo. Resumen en español El objetivo de este trabajo fue determinar la forma de N (N-NH4+ o N-NO3-) más absorbida por las plantas de papa en la producción de tubérculos-semilla, usando el isótopo 15N. El experimento fue realizado en condiciones de inver­nadero durante los meses de agosto a noviembre de 2006 en las instalaciones del Centro de Energía Nuclear en la Agricultura (CENA), Universidad de São Paulo (USP), Brasil. Fue conducido en potes plásticos de 2,3 l de capa­cidad usando com (mas) o sustrato arcilla expandida. El diseño experimental empleado fue el de bloques completos al azar con 5 tratamientos, referentes a las épocas de aplicación del NH4NO3 marcado: 14, 28, 42, 56 e 70 DDT, y 3 repeti­ciones. Fue usada la solución nutritiva IAC, modificada en cuanto al suministro de N, K y Ca, sustituyéndose el nitrato de calcio y nitrato de potasio por el nitrato de amonio enriquecido con 15N. Para determinar la eficiencia de utili­zación del N del nitrato de amonio de las plantas de papa marcadas con 15N, se consideró el principio de la dilución isotópica, considerándose el enriquecimiento en % de átomos de 15N, la cantidad de 15N en la planta y descon­tándose la variación natural del isótopo estable 15N. La forma preferencial de absorción del nitrógeno en la fase inicial de desarrollo fue la amoniacal, tornándose a nítrica después de 56 días (formación de tubérculos). El aprove­chamiento de N por las plantas, sin embargo, fue siempre mayor con la forma amoniacal aplicada en todos los estadios, con excepción de los 28 días y al final de ciclo. Resumen en inglés The nitrogen is the structural constituent of proteins, several metabolites involved in the synthesis and trans­ference of energy and also of nucleic acids. It is absorbed by plants in the nitrate (NO3-) or ammonium (NH4+) form. The nitrate uptake varies with cultivar and light intensity. The objective of this research was to determine the preferential form of N (N-NH4+ or N-NO3-) absorbed by the potato plants in seed tuber productions, using 15N isotope. The experiment (mas) was carried out in the greenhouse of Centro de Energia Nuclear na Agricultura (CENA) / USP, Brazil, using 2.3 l plastic pots, with expanded clays as substrate. The experimental design used was a completely randomized with five treatments, corresponding to the labeled NH4 or NO3 (15NH4 or 15 NO3) application time: 14, 28, 42, 56 and 70 days after transplanting (DAT), and three replicates. An IAC nutrient solution was used, modified to supply N, K and Ca, substituting calcium nitrate and potassium nitrate by ammonium nitrate labeled with 15N. The preferential form of nitrogen absorption at the initial developing stage was the ammonium, changing to nitrate after 56 DAT (tuber formation). The N utilization by the plants, however, was always higher with ammonium form applied in all stages, with the exception at 28 DAT and at the end of cycle.

Scientific Electronic Library Online (Spanish)

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Programa de Protección Ambiental y Bioseguridad en el Instituto Nacional de Psiquiatría Ramón de la Fuente/ Environmental protection and biosecurity program at the National Institute of Psichiatry Ramón de la Fuente

Nieto, Itzchel; Murillo, Susana; Rojo, Maricela; Asai, Miguel
2008-04-01

Resumen en español A partir de 1998, en el Instituto Nacional de Psiquiatría Ramón de la Fuente (INPRF) se iniciaron las actividades del Programa de Protección Ambiental y Civil (PPAyC). Sus objetivos son dar cumplimiento a los requisitos legales, prevenir riesgos, generar estrategias de atención a emergencias, capacitar a la población interna y mejorar el uso y aprovechamiento de los recursos institucionales. El propósito del presente trabajo es presentar los resultados obtenidos des (mas) pués de nueve años de trabajo del PPAyC en las áreas de manejo de residuos biológico-infecciosos, ahorro de energía eléctrica, uso y optimización de agua potable, control de emisiones a la atmósfera de los equipos fijos de combustión, seguridad radiológica y simulacros de emergencia. Residuos peligrosos biológico-infecciosos (RPBI). Con el objeto de reducir riesgos y prevenir accidentes, en el INPRF se implementó un procedimiento operativo para el manejo de los residuos peligrosos biológico-infecciosos en todas las áreas generadoras. Los resultados de las estrategias aplicadas muestran que la cantidad de los residuos y sus costos de manejo han disminuido gradualmente y se han observado mejores prácticas de manejo de residuos por parte de los trabajadores involucrados, con la consecuente reducción de riesgos. Ahorro de energía. Ante la necesidad de optimizar el uso de la energía, disminuir costos y crear conciencia entre la población, se implementó en todo el país el programa de ahorro de energía. Los resultados obtenidos muestran que, a partir de la implementación de las estrategias de ahorro en el INPRF, se obtuvo una reducción en el consumo de energía de 9.6% anual acumulado entre 2004 y 2005. Uso y aprovechamiento de agua potable. A partir de 2003, en el INPRF se implementaron medidas destinadas a disminuir el consumo per capita de agua potable que se recibe por la red municipal y optimizar su uso en las instalaciones. Como resultado se observó una disminución gradual en el uso de agua potable, de tal manera que, de los 170 litros/persona que se utilizaban en 2003, en 2006 únicamente se utilizaron 98 litros/persona. Seguridad radiológica. El programa de seguridad radiológica en el INPRF se inició con el objeto de minimizar los riesgos y efectos adversos que pudieran generar los materiales radiactivos en la salud del personal expuesto ocupacionalmente (POE), prevenir accidentes y cumplir con la normatividad. Como resultado de estas acciones, ningún POE ha excedido el máximo valor de dosis total acumulada (DTA) de radiaciones ionizantes permitido por la Comisión Nacional de Seguridad Nuclear y Salvaguardas (CNSNS) para cuerpo total. Por otro lado, a la fecha no se han registrado accidentes o contaminación con materiales o residuos radiactivos. Simulacros. En el INPRF se implementó un programa de protección civil, cuya labor principal fue la de capacitar periódicamente a los trabajadores para responder ante situaciones de emergencia. Como resultado de los simulacros de sismo que se han realizado (40 parciales y siete generales), se han reducido gradualmente los tiempos de desalojo de los inmuebles y la detección oportuna y sistemática de elementos de seguridad que requieren ser reparados o instalados. Emisiones a la atmósfera. En cumplimiento con la normatividad vigente en la Ciudad de México, en el INPRF se elaboró el programa de mantenimiento anual preventivo y correctivo de las dos calderas que dotan de agua caliente a la institución. Como resultado, se detectó la necesidad de sustituir los equipos por otros que utilizaran tecnología más limpia. Esto favoreció el cumplimiento de los límites máximos permitidos para emisiones gaseosas contaminantes y los costos de mantenimiento se redujeron. Discusión La implementación de diversas estrategias en materia de protección ambiental y civil y la capacitación reducen los riesgos del personal y protegen los bienes inmuebles y el entorno de la ciudad que habitamos. Resumen en inglés Since the beginning, mankind has been subjected to various natural disasters such as floods, hurricanes, earthquakes, droughts and wildfires. Therefore, societies have to organize themselves in order to cope with nature, provide support to each other and to protect the most vulnerable individuals and their properties. Depending on their social organization, some countries have developed their response strategies in the field of civil protection faster than others. After S (mas) eptember 19th, 1985, when an earthquake of Richter magnitude of 8.1 affected Mexico City, the Mexican government decided to establish the guidelines of the National Civil Protection System (SINAPROC). After a few years, the Environmental Protection and Ecological Equilibrium Law was published. This environmental protection regulation is specific and is directed to minimize the negative impact over the environment that could be generated through industrial activities, as well as from research centers, hospitals, and others institutions. To ensure full compliance with the Mexican regulations, in 1998 the Instituto Nacional de Psiquiatría Ramón de la Fuente (INPRF) initiated the Environmental and Civil Protection Program (ECPP). The aim of this program is to meet the legal and operational requirements applicable to an institution which has biomedical research, administration and hospitalization areas. In addition, the ECPP is in charge of giving workers training and generating specific strategies for environmental management in all activities that take place at the Institute. By establishing compliance guidelines to meet the government regulations on environmental and civil protection, the INPRF would develop strategies for minimizing risks, as well as staff training to enhance the use of institutional resources and reduce the response time to deal with emergencies. Objective Since its foundation, the environmental and civil protection program at the INPRF has had two basic objectives: 1. to attend the legal and operative requirements in a third level institution conformed by hospitalization, teaching, research and administrative areas, and 2. to offer continuous training to the internal population of a hospital in order to minimize work risks, to make an optimum use of the institutional resources and to reduce the response time of the workers in emergency situations. To develop and implement such an environmental and civil protection program, the following areas have been considered: Biohazardous wastes, saving electricity, use and optimization of drinking water, control of air emissions from stationary combustion equipment, radiation safety and emergency response procedures. The purpose of this work is to show the results achieved by ECPP after nine years since its inception. Results Biohazardous wastes (BW), by definition, are those materials generated during medical care which contain biological agents that may cause adverse effects to human health and the environment. BW are generated frequently in biomedical research areas, clinical laboratories and hospitals. In order to minimize risks and prevent accidents, INPRF implemented since 1997 an operating procedure for handling biohazardous wastes in all generating areas. Some of those strategies are directed to training medical personnel (physicians, nurses and clinical laboratory technicians) about the identification and classification of biohazardous wastes. Moreover, we have designed and distributed different kinds of written ads in order to help people to recognize and separate wastes correctly. Besides the latter actions, the INPRF hired a registered and certificated company which provides the proper recollection, treatment and final disposal of biological wastes, according to current legal ordinances. As a result of those strategies in the handling of biohazardous wastes in the Institution, the amount of wastes and their disposal costs have gradually decreased. Through staff training, personnel have learned to do a proper segregation of wastes, reducing the quantities of BW and therefore reducing risks. Energy saving. As a way to optimize the institutional resources, as well as reducing costs and creating awareness among the people, the INPRF's Energy Saving program was implemented in 2003. Since 2003, when ECPP began implementing the saving strategies, accumulated energy consumption per year had a 9.6% reduction between 2004 and 2005. Use of potable water. In the search for strategies to optimize the use of potable water that is received through the municipal network, in 2003 the INPRF-ECPP implemented measures aimed not only at reducing the per capita consumption of potable water but also to give it a proper use on the institution areas. As a result of these saving measures, there was a gradual decrease in the use of drinking water. So, from the 170 liters/person-day used in 2003, during 2006 only 98 liters/person-day were used. Radiological safety. Due to the adverse effects to human health that could result from exposure to radioactive materials, an institution that uses this kind of material in its basic biomedical research area must implement the necessary actions to minimize the risk of contamination for users and work areas. For that reason, the INPRF began the Radiological Safety Program, which had as its main objectives to minimize the risks and to prevent accidents involving radioactive materials based on regulation compliance. As a result of these strategies, the maximum value of the total dose accumulated per year of ionizing radiation received by personnel exposed who has carried out research in this institution in recent years has been of 3.14 mSv. Therefore, it had not exceeded the annual limit dose of ionizing radiation allowed for the total body by the Comisión Nacional de Seguridad Nuclear y Salvaguardas (CNSNS) of 50 mSv = 5rem. To date, there has been no accidents or contamination with radioactive materials or wastes in the INPRF. Emergency simulations. Considering the need of being prepared for emergencies and to comply with the regulation that establishes the compulsory conducting simulations in INPRF, the Internal Committee for Civil Protection (ICPC) conducts periodic training of employees on risk prevention, through courses and simulations of situations of earthquake, attempt of fire, handling of hazardous substances spills and first aid. As a result of the earthquake simulations that have been carried out at the INPRF, the time of evacuation of workers, hospitalized patients and floating population from buildings has gradually reduced. An additional advantage of conducting emergency simulations has been the early detection of systematic security features that need to be repaired or installed. Emissions to air. In recent years, increasingly strict regulation and monitoring of gaseous emissions generated by stationary and mobile sources in Mexico City has been established. In order to comply with the current regulations, it became necessary to develop a program of annual preventive and corrective maintenance of combustion equipment that is used to provide hot water, and to make periodic analysis of gaseous emissions. Among the parameters that have to be reported are: temperature of combustion gases, monoxide and dioxide carbon content, sulfur dioxide, nitrogen dioxide percentages and generated soot.

Scientific Electronic Library Online (Spanish)

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ESTUDIO TEÓRICO DEL EFECTO ISOTÓPICO DE HIDRÓGENO EN EL ADUCTO BORANO-CARBONILO/ THEORETICAL STUDY OF THE HYDROGEN ISOTOPE EFFECT ON THE BORANE-CARBONILE ADDUCT/ ESTUDO TEORICO DO EFEITO ISOTOPICO DE HIDROGENO NO ADUCTO BORANO-CARBONILO

Forero, Neftalí; González, Sergio A; Reyes, Andrés
2009-04-01

Resumen en portugués Temos estudado o efeito da substituição de isótopos de hidrogénio sobre a geometria, estrutura electrónica e da estabilidade do aduto Borana-carbonil, através do mêtodo de orbitais moleculares-core versões (OMNE) implementado no pacote computacional APMO. Descobrimos que um aumento da isótopo massa encurta as distâncias de ligação boro-carbono-isotópica de oxigênio e aumenta a distância, enquanto boro-carbono. Foi ainda determinada a estabilidade do aduto d (mas) e as energias de formação e distâncias de ligação BC. Nós descobrimos que o aumento da massa isotópica minar a relação BC. Uma explicação para este fenômeno em termos de conceito de acidez de Lewis predita resultados contrários aos encontrados enquanto um modelo baseado em diferenças de reatividade nas energias dos orbitais LUMO do Borana autorizados a conta para este efeito. Resumen en español Se estudió el efecto de la sustitución isotópica de hidrógeno sobre la geometría, la estructura electrónica y la estabilidad del aducto borano-carbonilo, mediante el método de orbitales moleculares nucleares y electrónicos (OMNE) implementado en el paquete computacional APMO. Se encontró que el aumento de la masa isotópica acorta las distancias de enlace boro-isótopo y carbono-oxígeno, mientras que alarga la distancia boro-carbono. Se determinó además la est (mas) abilidad del aducto a partir de las energías de formación y las distancias de enlace B-C. Se encontró que el aumento de la masa isotópica debilita el enlace B-C. Una primera explicación de este fenómeno en términos del concepto de acidez de Lewis predijo resultados contrarios a los encontrados, mientras que un modelo de reactividad basado en las diferencias de las energías de los orbitales LUMO del borano permitió dar cuenta de este efecto. Resumen en inglés We have investigated the hydrogen isotope effect on the geometry, the electronic structure and the stability of the borane-carbonile adduct, by using the nuclear-electronic molecular orbital method (NEMO) which has been implemented in the APMO software. We have found that an increase of the mass of the hydrogen isotope reduces the boron-hydrogen and carbon-oxygen bond lengths while increasing the boron-carbon distance. In this study, the stability of the adduct has been a (mas) nalyzed in terms of formation energies and B-C bond distances. We have found that the increase of the isotope mass weakens the B-C bond. We tried to give an explaination to this phenomenon based on Lewis acidity concept but it predicted the wrong results. A reactivity model based on the energy differences of borane LUMO orbitais offered a correct explaination to this effect.

Scientific Electronic Library Online (Spanish)

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β-decay of 13O

Knudsen, H.H.; Fynbo, H.O.U.; García Borge, María José; Boutami, Rafik; Dendooven, P.; Diget, C.Aa.

5 pages, 2 tables, 3 figures.--PACS nrs.: 23.40.Hc; 27.20.+n. | The beta decay of O-13 has been studied at the IGISOL facility of the Jyvaskyla accelerator centre (Finland). By developing a low-energy isotope-separated beam of O-13 and using a modern segmented charged-particle detector array an impr...

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β-decay of 13O

Knudsen, H. H.; Fynbo, H. O. U.; García Borge, María José; Boutami, Rafik; Dendooven, P.; Diget, C.Aa.; Eronen, T.; Fox, S.; Fraile, Luis M.; Fulton, B.; Huikary, J.; Jeppesen, Henrik B.; Jokinen, A. S.; Jonson, B.; Kankainen, A.; Moore, I.; Nieminen, A.; Nyman, G.; Penttilä, H.; Riisager, K.; Rinta-Antila, S.; Tengblad, Olof; Wang, Y.; Wilhelmsen, K.; Äystö, J.
2005-10-27

Digital.CSIC (Spain)

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β-decay in neutron-deficient Hg, Pb, and Po isotopes

Moreno, Óscar; Sarriguren, Pedro; Álvarez-Rodríguez, Raquel; Moya de Guerra, Elvira

11 pages, 3 tables, 7 figures.-- PACS nrs.: 21.60.Jz; 23.40.-s; 27.70.+q; 27.80.+w.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-th/0604024v1 | The effect of nuclear deformation on the energy distributions of the Gamow-Teller strength is studied in neutron-deficient Hg, Pb, and Po even ...

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β-decay in neutron-deficient Hg, Pb, and Po isotopes

Moreno, Óscar; Sarriguren, Pedro; Álvarez-Rodríguez, Raquel; Moya de Guerra, Elvira
2006-05-03

Digital.CSIC (Spain)

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α-particle production in the scattering of 6He by 208Pb at energies around the Coulomb barrier

Escrig, Diego; Sánchez-Benítez, A. M.; Moro, A. M.; González Álvarez, Marcos A.; Andrés, María Victoria; Angulo, C.; García Borge, María José; Cabrera, J.; Cherubini, S.; Demaret, P.; Espino, José Manuel; Figuera, P.; Freer, M.; García Ramos, José Enrique; Gómez Camacho, Joaquín; Gulino, M.; Kakuee, O. R.; Martel, Ismael; Metelko, C.; Pérez-Bernal, F.; Rahighi, J.; Rusek, K.; Smirnov, D.; Tengblad, O.; Ziman, V.
2007-11-29

Digital.CSIC (Spain)

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ΛNN and ΣNN systems at threshold. II. The effect of D waves

Garcilazo, H.; Valcarce, A.; Fernández Caramés, Teresa

7 pages, 5 figures.-- PACS nrs.: 13.75.Ev; 12.39.Jh; 21.45.+v.-- ISI Article Identifier: 000249786600005.-- ArXiv pre-print available at: http://arxiv.org/abs/0708.0199 | Using the two-body interactions obtained from a chiral constituent quark model, we study all ΛNN and ΣNN states with I=0,1,2 and ...

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ΛNN and ΣNN systems at threshold

Garcilazo, H.; Fernández Caramés, Teresa; Valcarce, A.

10 pages, 6 figures.-- PACS nrs.: 13.75.Ev; 12.39.Jh; 21.45.+v.-- ISI Article Identifier: 000245332200008.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0701275 | See also: "ΛNN and ΣNN systems at threshold. II. The effect of D waves", http://digital.csic.es/handle/10261/9101 | We calc...

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phi decay: A relevant source for K- production at energies available at the GSI Schwerionen-Synchrotron (SIS)?

Belver, D.; Cabanelas, P.; Castro, E.; Díaz Medina, José; Garzon, J. A.; Gil Ortiz, Alejandro
2009-08-01

Digital.CSIC (Spain)

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Yrast studies of Se-80,Se-82 using deep-inelastic reactions

Jones, G. A.; Regan, P. H.; Podolyak, Zs.; Yoshinaga, N.; Higashiyama, K.; De Angelis, G.; Zhang, Y. H.

5 pages, 5 figures.-- PACS nrs.: 21.10.-k; 21.60.Cs; 25.70.Hi; 27.50.+e.-- ISI Article Identifier: 000251327000034. | We report the results of an experiment in which we studied the near-yrast states in selenium isotopes approaching N=50 following their population in multinucleon transfer reactions b...

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27

Two-proton decay of the isobaric analogue state of Ar-31

Mukha, I.; Axelsson, L.; Äystö, J.; Bergmann, U. C.; García Borge, María José; Fraile, Luis M.; Fynbo, H. O. U.; Honkanen, A.; Hornshøj, P.; Jading, Y.; Jonson, B.; Jokinen, A.; Martel, Ismael; Oinonen, M.; Nilsson, T.; Nyman, G.; Petersen, B.; Riisager, K.; Siiskonen, T.; Smedberg, M. H.; Tengblad, Olof; Wenander, F.
1998-02-16

Digital.CSIC (Spain)

28

Towards the hydrogen economy?

Marbán Calzón, Gregorio; Valdés-Solís Iglesias, Teresa
2007-02-02

Digital.CSIC (Spain)

29

Towards a consistent estimate of the chiral low-energy constants

Cirigliano, V.; Ecker, G.; Eidemüller, M.; Kaiser, R.; Pich, Antonio; Portolés, Jorge

DRIVER (Spanish)

30

Towards a consistent estimate of the chiral low-energy constants

Cirigliano, Vincenzo; Ecker, Gerhard; Eidemüller, Markus; Kaiser, Roland; Pich, Antonio; Portolés, Jorge
2006-07-31

Digital.CSIC (Spain)

32

Theoretical study of neutrino-induced coherent pion production off nuclei at T2K and MiniBooNE energies

Amaro, J.E.; Hernández, Eliecer; Nieves, Juan Miguel; Valverde, M.
2009-01-07

Digital.CSIC (Spain)

33

The doubly closed shell nucleus Sn-132(50)82

Björnstad, T.; García Borge, María José; Blomqvist, J.; Von Dincklage, R. D.; Ewan, G. T.; Hoff, P.

23 pages, 4 tables, 10 figures. | The structure of excited states in Sn-132, fed in the β-decay of In-132, has been investigated. Absolute intensities were deduced from γ-singles measurements. From multi-spectrum analysis of γ-lines the half-life of In-132 was determined to be 186 ± 22 ms. A level s...

DRIVER (Spanish)

34

The doubly closed shell nucleus Sn-132(50)82

Björnstad, T.; García Borge, María José; Blomqvist, J.; Von Dincklage, R. D.; Ewan, G. T.; Hoff, P.; Jonson, B.; Kawade, K.; Kerek, A.; Klepper, O.; Lövhöiden, G.; Mattsson, S.; Nyman, G.; Ravn, H. L.; Rudstam, G.; Sistemich, K.; Tengblad, Olof
1986-05-26

Digital.CSIC (Spain)

35

The beta 2p decay mechanism of Ar-31 | The β2p decay mechanism of Ar-31

Fynbo, H. O. U.; García Borge, María José; Axelsson, L.; Äystö, J.; Bergmann, U. C.; Fraile, Luis M.

23 pages, 10 figures.-- PACS nrs.: 23.40.Hc; 27.30.+t.-- Printed version published on Sep 11, 2000. | We have measured the beta-decay of Ar-31 with a high granularity setup sensitive to multiparticle decay branches. Two-proton emission is observed from the isobaric analog state in Cl-31 to the four ...

DRIVER (Spanish)

36

The Standard Model prediction for eps'/eps

Pallante, Elisabetta; Pich, Antonio; Scimemi, Ignazio
2001-06-01

Digital.CSIC (Spain)

39

The Silicon Cube detector

Matea, I.; Adimi, N.; Blank, B.; Canchel, G.; Giovinazzo, J.; García Borge, María José; Domínguez-Reyes, Ricardo; Tengblad, Olof; Thomas, J.-C.
2009-06-16

Digital.CSIC (Spain)

40

The Adapted Ordering Method for the Representation Theory of Lie Algebras and Superalgebras and their Generalizations

Gato Rivera, Beatriz

6 pages.-- Invited talk at The 17th Colloquium "Integrable Systems and Quantum Symmetries", Prague, June 19-21, 2008. Very pedagogical. | In 1998 the Adapted Ordering Method was developed for the study of the representation theory of the superconformal algebras in two dimensions. It allows: to deter...

DRIVER (Spanish)

41

The nuclear structure of Th-229

Gulda, K.; Kurcewicz, W.; Aas, A. J.; García Borge, María José; Burke, D. G.; Fogelberg, B.; Grant, I. S.

25 pages, 5 tables, 9 figures.-- PACS nrs.: 21.10.-k; 23.20.-g; 23.20.Lv; 23.20.Nx.-- Available online Dec 5, 2001. | The γ-rays following the β- decay of Ac-229 have been investigated by means of γ-ray singles and γγ-coincidence measurements using Ge detectors. Multipolarities of 40 transitions in ...

DRIVER (Spanish)

42

The nuclear structure of Fr-227

Kurcewicz, W.; Grant, I. S.; Gulda, K.; Aas, A. J.; Billowes, J.; García Borge, María José; Burke, D. G.

26 pages, 4 tables, 10 figures.-- PACS nrs.: 21.10.−k; 23.20.−g; 23.20.Lv; 23.20.Nx. | The γ-rays following the β- decay of Rn-227 have been investigated by means of γ-ray singles and γγ-coincidence measurements using an array of 12 Compton-suppressed Ge detectors. The fast-timing βγγ(t) method has ...

DRIVER (Spanish)

43

Testing of a DSSSD detector for the stopped RISING project

Kumar, R.; Molina, Francisco G.; Pietri, S.; Casarejos, E.; Algora, Alejandro; Benlliure, J.; Doornenbal, P.; Gerl, J.; Gorska, M.; Kojouharov, I.; Podolyak, Z.; Prokopowicz, W.; Regan, P. H.; Rubio, Berta; Schaffner, H.; Tashenov, S.; Wollersheim, H. J.
2008-11-01

Digital.CSIC (Spain)

44

Tau polarization at the Z peak from the acollinearity between both τ-decay products

Alemany-Fernández, R.; Rius, Nuria; Bernabéu, José; Gómez Cadenas, Juan José; Pich, Antonio
1992-07-20

Digital.CSIC (Spain)

48

Systematic investigation of the drip-line nuclei Li-11 and Be-14 and their unbound subsystems Li-10 and Be-13

Simon, H.; Meister, M.; Aumann, T.; García Borge, María José; Chulkov, L. V.; Pramanik, U. Datta; Elze, Th. W.

36 pages, 10 figures, 8 tables, 3 appendices.-- PACS nrs.: 27.20.+n; 24.70.+s.-- Printed version published Jul 15, 2007. | Fragmentation reactions in a carbon target with beams of Li-11 and Be-14 at relativistic energies have been studied in a kinematically complete experiment at the ALADIN-LAND set...

DRIVER (Spanish)

49

Symmetry patterns in the (N, Δ) spectrum

González Marhuenda, Pedro; Vijande, Javier; Valcarce, A.; Garcilazo, H.

4 pages, 2 figures.-- ISI Article Identifier: 000248297600105.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0610288 | Talk given at the 18th International Conference on Few-Body Problems in Physics, August 21-26 2006, Santos, Sao Paulo, Brazil. | We revise the role played by symmetry ...

DRIVER (Spanish)

50

Symmetry patterns in the (N, Δ) spectrum

González Marhuenda, Pedro; Vijande, Javier; Valcarce, A.; Garcilazo, H.
2007-06-15

Digital.CSIC (Spain)

51

Super-allowed beta decay of nuclei at the drip-line

García Borge, María José; Hansen, P. G.; Johannsen, L.; Jonson, B.; Nilsson, T.; Nyman, G.; Richter, A.; Riisager, K.; Tengblad, Olof; Wilhelmsen, K.
1991-09-01

Digital.CSIC (Spain)

52

Study of the giant Gamow-Teller resonance in nuclear β-decay: The case of Ar-32

Björnstad, T.; García Borge, María José; Dessagne, P.; Von Dincklage, R.-D.; Ewan, G. T.; Hansen, P. G.; Huck, A.; Jonson, B.; Klotz, G.; Knipper, A.; Larsson, P. O.; Nyman, G.; Ravn, H. L.; Richard-Serre, C.; Riisager, K.; Schardt, D.; Walter, G.
1985-09-30

Digital.CSIC (Spain)

53

Study of the elastic scattering of He-6 on Pb-208 at energies around the Coulomb barrier

Sánchez-Benítez, A. M.; Escrig, Diego; Álvarez, M. A. G.; Andrés, M. V.; Angulo, C.; García Borge, María José; Cabrera, J.; Cherubini, S.; Demaret, P.; Espino, José Manuel; Figuera, P.; Freer, M.; García Ramos, José Enrique; Gómez-Camacho, Joaquín; Gulino, M.; Kakuee, O. R.; Martel, Ismael; Metelko, C.; Moro, A. M.; Pérez-Bernal, F.; Rahighi, J.; Rusek, K.; Smirnov, D.; Tengblad, Olof; Van Duppen, P.; Ziman, V.
2008-02-07

Digital.CSIC (Spain)

54

Study of charged particles emitted in the β-decay of 6,8He

García Borge, María José; Johannsen, L.; Jonson, B.; Nilsson, T.; Nyman, G.; Riisager, K.; Tengblad, Olof; Wilhelmsen Rolander, K.; [ISOLDE Collaboration]
1993-07-19

Digital.CSIC (Spain)

55

Study of M1 excitations by high-resolution proton inelastic scattering experiment at forward angles

Tamii, A.; Adachi, T.; Carter, J.; Dozono, M.; Fujita, H.; Fujita, Y.; Hatanaka, K.; Hashimoto, H.; Kaneda, T.; Itoh, M.; Kawabata, T.; Matsubara, H.; Nakanishi, K.; Neumann-Cosel, P. von; Okamura, H.; Pérez, Armando; Poltoratska, I.; Ponomarev, V.; Popescu, L.; Richter, A.; Rubio, Berta; Sakaguchi, H.; Sakemi, Y.; Sasamoto, Y.; Shimbara, Y.; Shimizu, Y.; Smit, F. D.; Tameshige, Y.; Yosoi, M.; Zenihiro, J.; Zimmer, K.
2007-05-15

Digital.CSIC (Spain)

58

Spectroscopy with β2p and β-ν recoil shifts

Fynbo, H. O. U.; Axelsson, L.; Äystö, J.; Bergmann, U. C.; García Borge, María José; Fraile, Luis M.; Honkanen, A.; Hornshøj, P.; Jading, Y.; Jokinen, A.; Jonson, B.; Martel, Ismael; Mukha, I.; Nilsson, T.; Nyman, G.; Oinonen, M.; Riisager, K.; Siiskonen, T.; Smedberg, M. H.; Thaysen, J.; Tengblad, Olof; Wenander, F.
2002-01-06

Digital.CSIC (Spain)

59

Single- and low-lying-states dominance in two-neutrino double-beta decay

Moreno, Oscar; Álvarez-Rodríguez, Raquel; Sarriguren, Pedro; Moya de Guerra, Elvira; Šimkovic, F.; Faessler, A.
2009-01-01

Digital.CSIC (Spain)

60

Semileptonic decays of light quarks beyond the Standard Model

González-Alonso, Martín; Jenkins, James P.; Cirigliano, Vincenzo
2010-05-01

Digital.CSIC (Spain)

61

Searching for the H-5 resonance in the t+n+n system

Meister, M.; Chulkov, L. V.; Simon, H.; Aumann, T.; García Borge, María José; Elze, Th. W.; Emling, H.

19 pages, 7 figures, 2 tables, 2 appendices.-- PACS nrs.: 27.10.+h; 25.60.Gc.-- Printed version published Jul 28, 2003. | Erratum to this paper (error in the calculation of resonance parameters) published in Nuclear Physics A 739(3-4): 353-354 (2004), http://dx.doi.org/10.1016/j.nuclphysa.2004.04.11...

DRIVER (Spanish)

62

Searching for the H-5 resonance in the t+n+n system

Meister, M.; Chulkov, L. V.; Simon, H.; Aumann, T.; García Borge, María José; Elze, Th. W.; Emling, H.; Geissel, H.; Hellström, M.; Jonson, B.; Kratz, J. V.; Kulessa, R.; Leifels, Y.; Markenroth, K.; Münzenberg, G.; Nickel, F.; Nilsson, T.; Nyman, G.; Pribora, V.; Richter, A.; Riisager, K.; Scheidenberger, C.; Schrieder, G.; Tengblad, Olof
2003-04-17

Digital.CSIC (Spain)

63

Search for beta-delayed charged particles from the halo nucleus Be-14

Jeppesen, H.; Bergmann, U. C.; García Borge, María José; Cederkäll, J.; Fedoseyev, V. N.; Fynbo, H. O. U.; Hansper, V. Y.; Jonson, B.; Markenroth, K.; Mishin, V. I.; Nilsson, T.; Nyman, G.; Riisager, K.; Tengblad, Olof; Wilhelmsen Rolander, K.
2002-08-14

Digital.CSIC (Spain)

64

Scattering of 6He at energies around the Coulomb barrier

Sánchez-Benítez, A. M.; Escrig, Diego; Álvarez, M. A. G.; Andrés, M. V.; Angulo, C.; García Borge, María José; Cabrera, J.; Cherubini, S.; Espino, José Manuel; Figuera, P.; Freer, M.; García Ramos, José Enrique; Gómez-Camacho, Joaquín; Gulino, M.; Kakuee, O. R.; Martel, Ismael; Metelco, C.; Moro, A. M.; Rahighi, J.; Rusek, K.; Smirnov, D.; Tengblad, Olof; Van Duppen, P.; Ziman, V.
2005-09-12

Digital.CSIC (Spain)

65

S-wave Kπ scattering in chiral perturbation theory with resonances

Jamin, Matthias; Oller, José Antonio; Pich, Antonio
2000-10-30

Digital.CSIC (Spain)

67

Recent developments in chiral dynamics of hadrons and hadrons in a nuclear medium

Oset, Eulogi; Sarkar, Sourav; Vicente Vacas, Manuel J.; Kaskulov, Murat; Roca, L.; Magas, Volodymyr K.; Ramos, Àngels; Toki, H.
2007-01-20

Digital.CSIC (Spain)

68

Quenched E1 transition rates in Th-231

Aas, A. J.; Mach, H.; Kvasil, J.; García Borge, María José; Fogelberg, B.; Grant, I. S.; Gulda, K.; Hagebø, E.

24 pages, 5 tables, 5 figures.-- PACS nrs.: 21.10.−k; 21.10.Tg; 21.10.Re; 23.20.−g; 23.20.Lv; 27.90.+b. | The fast timing βγγ(t) method has been used to measure lifetimes of the low-lying levels in Th-231 populated in the β- decay of Ac-231. The half-life of the K-π = 5/2(-) band-head at 185.7-keV w...

DRIVER (Spanish)

69

Quadrupole deformed and octupole collective bands in Ra-228

Gulda, K.; Mach, H.; Aas, A. J.; García Borge, María José; Burke, D. G.; Fogelberg, B.; Gietz, H.; Grant, I. S.

19 pages, 4 tables, 4 figures.-- PACS nrs.: 21.10.-k; 23.20.-g; 23.20.Lv; 23.20.Nx. | Spins and parities for collective states in Ra-228 have been determined from conversion electron measurements with a mini-orange β spectrometer. The fast-timing βγγ(t) method has been used to measure lifetimes of T...

DRIVER (Spanish)

70

QCD studies with ATLAS at the LHC

Mitsou, Vasiliki A.; ATLAS SCT Collaboration

8 pages, 11 figures.-- Prepared for 11th International Conference in Quantum ChromoDynamics (QCD 04), Montpellier, France, 5-9 Jul 2004.-- Published in: Nuclear Physics B Proceedings Supplements 152: 306-313 (2006), final full-text version of the paper available at: http://dx.doi.org/10.1016/j.nuclp...

DRIVER (Spanish)

71

QCD analysis of the tau hadronic width

Braaten, E.; Narison, Stéphan; Pich, Antonio
1992-04-13

Digital.CSIC (Spain)

73

Proton-proton correlations observed in two-proton decay of 19Mg and 16Ne

Mukha, I.; Grigorenko, L.; Summerer, K.; Acosta, L.; Álvarez, M. A. G.; Casarejos, E.; Chatillon, A.

5 pages, 6 figures.-- PACS nrs.: 21.10.-k; 21.45.+v; 23.50.+z. | Proton-proton correlations were observed for the two-proton decays of the ground states of $^{19}$Mg and $^{16}$Ne. The trajectories of the respective decay products, $^{17}$Ne+p+p and $^{14}$O+p+p, were measured by using a tracking te...

DRIVER (Spanish)

74

Properties of D and D-* mesons in the nuclear medium

Nieves, Juan Miguel; García-Recio, C.; Tolós, Laura
2009-12-04

Digital.CSIC (Spain)

75

Prompt photon identification in the ALICE experiment: The isolation cut method

Conesa, Gustavo; Delagrange, H.; Díaz Medina, José; Kharlov, Y. V.; Schutz, Y.

14 pages, 18 figures.-- PACS nrs.: 25.75.Nq; 24.10.Lx; 25.75.−q; 29.40.Vj.-- ISI Article Identifier: 000250775200035 | Printed version published on Oct 11, 2007. | The ALICE experiment at LHC will detect and identify prompt photons and light neutral mesons with the PHOS and EMCal detectors. Charged ...

DRIVER (Spanish)

76

Probing the Li-11 halo structure through β-decay into the Be-11(*) (18 MeV) state

García Borge, María José; Grigorenko, L.; Guillemaud-Mueller, D.; Hornshøj, P.; Humbert, F.; Jonson, B.

10 pages, 1 table, 4 figures.-- PACS nrs.: 23.40.Hc; 27.20.+n. | An experimental study of β-delayed charged particles (H, He, Be) from Li-11 shows a β-feeding to an excited state at 18.15(15) MeV in Be-11 with a large Gamow-Teller strength, B-GT ≥ 1.6. Branching ratios and reduced widths of 2-, 3- a...

DRIVER (Spanish)

77

Positron-neutrino correlations in Ar-32 and Ar-33 decays: Probes of scalar weak currents and nuclear isospin mixing

García, A.; Adelberger, E. G.; Ortiz, G.; Swanson, H. E.; Beck, M.; Tengblad, Olof; García Borge, María José; Martel, Ismael; Bichsel, H.
2000-12-01

Digital.CSIC (Spain)

78

Performance of the prototype detector for the LHCf experiment

Sako, T.; Adriani, O.; Bonechi, L.; Bongi, M.; Faus, Ángeles; Haguenauer, M.; Itow, Y.; Kasahara, K.

14 pages, 11 figures.-- PACS nrs.: 13.85.Tp; 95.30.Cq; 95.55.Vj; 95.85.Ry.-- ISI Article Identifier: 000248784500012 | LHCf is a compact experiment for measuring the energy and transverse momentum spectra of the neutral particles emitted in the high rapidity range at an LHC interaction point. The da...

DRIVER (Spanish)

79

Performance of the prototype detector for the LHCf experiment

Sako, T.; Adriani, O.; Bonechi, L.; Bongi, M.; Faus, Ángeles; Haguenauer, M.; Itow, Y.; Kasahara, K.; Masuda, K.; Matsubara, Y.; Matsumoto, H.; Menjo, H.; Muraki, Y.; Obata, Y.; Tamura, T.; Tanaka, K.; Torii, S.; Turner, W. C.; Velasco, Jorge; Yoshida, K.
2007-07-21

Digital.CSIC (Spain)

80

Performance of the front-end electronics of the ANTARES neutrino telescope

Aguilar Sánchez, José Antonio; Bigongiari, Ciro; Dornic, D.; Emanuele, Umberto; Gómez-González, Juan Pablo; Hernández-Rey, Juan José; Mangano, Salvatore; Salesa-Greus, Francisco; Toscano, Simona; Yepes, Harold; Zornoza, J. D.; Zúñiga, Juan
2010-10-01

Digital.CSIC (Spain)

82

Osteoporosis del embarazo y la lactancia: Estudio de 8 casos/ Osteoporosis during pregnancy and lactation: Report of eight cases

Sarli, Marcelo; Hakim, Carina; Rey, Paula; Zanchetta, José
2005-12-01

Resumen en español Tanto la osteoporosis generalizada como la regional son enfermedades que excepcionalmente se asocian con el embarazo. El objetivo de este trabajo es revisar nuestra experiencia en el diagnóstico y tratamiento de estas afecciones. Entre 1984 y 2004 consultaron seis puérperas por osteoporosis y dos por osteoporosis regional. En el primer grupo tres pacientes refirieron fracturas vertebrales y las restantes grave desmineralización detectada por densitometría ósea (DEXA) (mas) . Los síntomas comenzaron en el tercer trimestre o en el posparto inmediato. Cinco eran primíparas mientras que una era multípara y había amamantado por un tiempo prolongado. Los factores de riesgo detectados fueron: baja ingesta láctea, delgadez, osteoporosis familiar, amenorreas, tabaquismo y corticoterapia. El laboratorio mostró recambio óseo acelerado. La DEXA documentó marcada desmineralización especialmente en esqueleto axial. En todas se interrumpió la lactancia y se indicaron drogas anti-resortivas en cuatro, estrógenos en una y sólo calcio y vitamina D en otra. Todas, menos una, evolucionaron favorablemente independientemente del tratamiento utilizado. Dos pacientes consultaron por dolor y limitación funcional progresiva durante el embarazo, en cadera izquierda y pie derecho respectivamente. La DEXA mostró desmineralización del lado afectado. El diagnóstico de osteoporosis regional se confirmó por resonancia magnética nuclear. Los informes de laboratorio indicaron aumento del turnover óseo. Ambas fueron tratadas exitosamente con reposo y bifosfonatos. Resumen en inglés Both generalized and regional osteoporosis exceptionally occur during pregnancy and lactation. The aim of this paper is to show our experience in the diagnosis and treatment of these diseases. From 1984 to 2004 six lactating women with osteoporosis and two with regional osteoporosis consulted us. In the former group, three patients had vertebral fractures and the others experienced substantial demineralization detected by dual-energy X-ray absorptiometry (DXA). In all cas (mas) es, symptoms began during the third trimester of pregnancy or immediately after delivery. Five of them were primiparous and one was multiparous with a long period of lactation. Risk factors were: low calcium intake, low weight, family history of osteoporosis, amenorrhea, cigarette consumption and corticosteroid therapy. Laboratory tests evidenced increased bone turnover. DXA scan showed substantial demineralization, particularly in axial skeleton. Lactation was interrupted in all women and four received anti-resorptive drugs, one estrogen and only calcium plus vitamin D the remaining. All of them, but one, evolved successfully. The women affected by regional osteoporosis complained of unilateral pain and progressive functional limitation of right foot and left hip respectively. Reduced bone mineral density at symptomatic sites was seen by DXA. Diagnosis was confirmed by typical magnetic resonance imaging pattern. Both patients cured with rest and bisphosfonates treatment.

Scientific Electronic Library Online (Spanish)

83

Nucleoporins Prevent DNA Damage Accumulation by Modulating Ulp1-dependent Sumoylation Processes

Palancade, Benoit; Xianpeng, Liu; García-Rubio, María L.; Aguilera, Andrés; Xiaolan, Zhao; Doye, Valérie
2007-08-01

Digital.CSIC (Spain)

84
85

New information on β-delayed neutron emission from Be-12, Be-14

Bergmann, U. C.; Axelsson, L.; García Borge, María José; Fedoseyev, V. N.; Forssén, C.; Fynbo, H. O. U.; Grévy, S.; Hornshøj, P.; Jading, Y.; Jonson, B.; Köster, U.; Markenroth, K.; Marqués, F. M.; Mishin, V. I.; Nilsson, T.; Oberstedt, A.; Ravn, H. L.; Riisager, K.; Schrieder, G.; Sebastian, V.; Simon, H.; Tengblad, Olof; Wenander, F.; Wilhelmsen Rolander, K.
1999-10-18

Digital.CSIC (Spain)

86

New high-spin isomer and quasiparticle-vibration coupling in Ir-187

Algora, Alejandro; Modamio, V.; Jungclaus, A.; Bazzacco, D.; Escrig, D.; Fraile, L. M.; Lenzi, S.; Marginean, N.; Martinez, T.; Napoli, D. R.; Schwengner, R.; Ur, C. A.
2010-05-12

Digital.CSIC (Spain)

87

Neutron-3H potentials and the 5H-properties

Diego, Raul de; Garrido, Eduardo; Fedorov, D. V.; Jensen, A. S.
2007-02-12

Digital.CSIC (Spain)

89

NNLO tau+tau- production cross section at threshold

Ruiz-Femenía, Pedro D.; Pich, Antonio
2003-06-01

Digital.CSIC (Spain)

91

Multiple particle break-up study of low excited states in Be-9: The ghost peak in the Be-8 excitation energy spectrum visited

Madurga, Miguel; García Borge, María José; Fynbo, H. O. U.; Jonson, B.; Nyman, G.; Prezado, Yolanda

2 pages, 2 figures.-- PACS nrs.: 23.40.-s; 23.40.Hc; 27.20.+n. | The aim of this work is to find out the origin of the anomalous resonance in Be-8 seen in the reactions through excited states in Be-9. We have populated the Be-9 excited states by beta-decay of Li-9. Energy and direction of the two al...

DRIVER (Spanish)

92

Multiple particle break-up study of low excited states in Be-9: The ghost peak in the Be-8 excitation energy spectrum visited

Madurga, Miguel; García Borge, María José; Fynbo, H. O. U.; Jonson, B.; Nyman, G.; Prezado, Yolanda; Riisager, K.; Tengblad, Olof
2007-11-01

Digital.CSIC (Spain)

93

Merits and Limits of Thermalhydraulic Plant Simulations - Towards a Unified Approach To Qualify Plant-models

Izquierdo, JM.; Hortal, J.; Vanhoenacker, L.; 4th OECD-CSNI Specialist Meeting on Transient Two-Phase Flow and System Thermal-Hydraulics

The paper describes the problems associated with building a Nuclear Plant Model for simulation of transients under the light of recent Spanish and Belgian experience and suggests an approach to qualify plant models based on post-processing and scaling techniques.

DRIVER (Spanish)

94

Measurement of high energy resolution inelastic proton scattering at and close to zero degrees

Tamii, A.; Fujita, Y.; Matsubara, H.; Adachi, T.; Carter, J.; Dozono, M.; Fujita, H.; Hashimoto, H.; Hatanaka, K.; Itahashi, T.; Itoh, M.; Kawabata, T.; Nakanishi, K.; Ninomiya, S.; Pérez-Cerdán, Ana Belén; Popescu, L.; Rubio, Berta; Saito, T.; Sakaguchi, H.; Sakemi, Y.; Sasamoto, Y.; Shimbara, Y.; Shimizu, Y.; Smit, F. D.; Tameshige, Y.; Yosoi, M.; Zenhiro, J.
2009-04-10

Digital.CSIC (Spain)

95

Mapping of the C-12* states via the B-10(He-3,pααα) reaction

García Borge, María José; Alcorta, Martín; Fynbo, H. O. U.; García, G.; Jeppesen, H. B.; Kirsebom, O.

4 pages, 4 figures.-- PACS nrs.: 21.10.-k, 21.10.Hw, 25.55.-e, 27.20.+n. | We have studied C-12 in full kinematics via the B-10(He-3,pααα) reaction at an energy of 2.45 MeV. In our data we have identified states in C-12 from the ground state up to about 18 MeV, with spins ranging from 0 to 4. Due to...

DRIVER (Spanish)

96

Low energy reactions with radioactive ions at REX-ISOLDE - the Li-9 + H-2 case

Jeppesen, H. B.; Ames, F.; Van den Bergh, P.; Bergmann, U. C.; Bollen, G.; García Borge, María José

19 pages, 12 figures, 2 tables.-- PACS nrs.: 25.60.-t; 25.45.-z; 27.20.+n.-- Available online Dec 9, 2004. | At the newly constructed postaccelerator REX-ISOLDE (Radioactive beam Experiment at ISOLDE) we have investigated reactions induced by a Li-9 beam incident on a deuterium target at an energy o...

DRIVER (Spanish)

97

Longitudinal momentum distributions of C-16,C-18 fragments after one-neutron removal from C-17,C-19

Baumann, T.; García Borge, María José; Geissel, H.; Lenske, H.; Markenroth, K.; Schwab, W.; Smedberg, M. H.

6 pages, 5 figures.-- PACS nrs.: 25.60.Gc; 25.70.Mn; 27.20.+n.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-ex/9810011 | The fragment separator FRS at GSI was used as an energy-loss spectrometer to measure the longitudinal momentum distributions of C-16,C-18 fragments after one-neutron ...

DRIVER (Spanish)

98

Localization in 2p1f nuclear shell-model wavefunctions

Gómez, J.M.G.; Kar, K.; Kota, V.K.B.; Molina, Rafael A.; Retamosa, Joaquín
2003-07-12

Digital.CSIC (Spain)

100

Lambda-p femtoscopy in collisions of Ar + KCl at 1.76AGeV

HADES Collaboration; Díaz Medina, José; Gil Ortiz, Alejandro; Agakishiev, G.; Ramstein, B.
2010-08-18

Digital.CSIC (Spain)

101

Investigation of the alpha-cluster structure of Ne-22 and Mg-22

Goldberg, V.Z.; Rogachev, G.V.; Trzaska, W.H.; Kolata, J.J.; Andreyev, A.; Angulo, C.; García Borge, María José

10 pages, 2 tables, 10 figures.--PACS nrs.: 21.10.-k; 24.30.-v; 27.30.+t | An excitation function for resonance elastic scattering of alpha particles on O-18 and Ne-18 was measured using the method of inverse geometry with a very thick target. Spectroscopic information was obtained for 23 levels in ...

DRIVER (Spanish)

102

Investigation of the Li-9 + H-2 → Li-8 + t reaction at REX-ISOLDE

Jeppesen, H. B.; Moro, A. M.; Nilsson, T.; Ames, F.; Bergh, P. van den; Bergmann, U. C.; Bollen, G.

6 pages, 3 tables, 3 figures.-- Printed version published Mar 30, 2006.-- PACS nrs.: 25.60.Je; 25.45.Hi; 27.20.+n. | The one-neutron transfer reaction Li-9 + H-2 -> Li-8 + t has been investigated in an inverse kinematics experiment by bombarding a deuterated polypropylene target with a 2.36 MeV/u Li...

DRIVER (Spanish)

103

Invariant mass spectrum and alpha-n correlation function studied in the fragmentation of He-6 on a carbon target

Aleksandrov, D.; Aumann, T.; Axelsson, L.; Baumann, T.; García Borge, María José; Chulkov, L. V.; Cub, J.

13 pags, 5 figures.-- PACS nrs.: 24.60.−t; 25.70.Ef; 27.20.+n. | Momentum distributions and invariant mass spectra from the breakup of He-6 ions with an energy of 240 MeV/u interacting with a carbon target have been studied. The data were used to extract information about the reaction mechanism whic...

DRIVER (Spanish)

104

Influence of the nuclear medium on inclusive electron and neutrino scattering off nuclei

Buss, Oliver; Leitner, Tina; Mosel, U.; Álvarez-Ruso, Luis
2007-09-20

Digital.CSIC (Spain)

105

In-beam gamma-ray spectroscopy and shell-model description of Y-85,Y-86 isotopes

Rusu, C.; Ur, C. A.; Bucurescu, D.; Iordachescu, A.; Marginean, N.; Cata-Danil, G.; Ionescu-Bujor, M.; Ivascu, M.; Bazzacco, D.; Kroll, T.; Lenzi, S.; Lunardi, S.; Menegazzo, R.; Alvarez, C.R.; De Angelis, G.; Gadea, Andrés; Napoli, D.
2008-12-13

Digital.CSIC (Spain)

107

Identification of photon-tagged jets in the ALICE experiment

Conesa, Gustavo; Delagrange, H.; Díaz Medina, José; Kharlov, Y. V.; Schutz, Y.

30 pp.-- PACS numbers: 25.75.Nq, 24.10.Lx, 25.75.-q, 29.40.Vj.-- Published in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Volume 585, Issues 1-2, 21 January 2008, Pages 28-39.-- Final full-text version of the paper ...

DRIVER (Spanish)

108

Historia de la obra científica de Eduardo Cruz-Coke Lassabe/ The scientific work of Eduardo Cruz-Coke Lassabe, MD

Cruz-Coke M, Ricardo
2001-04-01

Resumen en inglés Background: Eduardo Cruz Coke M.D., (1899-1974) was one of the precursors and pioneers of biomedical research in Chile, as professor of Physiological and Pathological Chemistry at the University of Chile, from 1925 to 1962. He was a disciple of Dr. Juan Noe and studied in Europe with the Nobel Prize winners Otto Warburg, Jean Perrin, Louis de Broglie and Frederic G. Hopkins. In Chile, he founded a scientific academy with disciples that later obtained the National Sciences (mas) Award, such as Hector Croxatto, Jorge Mardones, Hermann Niemeyer, Luis Vargas and Jorge Allende. He carried out pioneering research in metabolism, nutrition, endocrinology, oncology and nephrogenic hypertension. He published more than 50 scientific papers in French, English and Spanish. He founded scientific societies, edited journals and created the National Commission of Nuclear Energy. His books were "The ionic acidity in the clinic", "Preventive and directed medicine", "The adrenal cortex". He was Ministry of Health between 1937 and 1938 and passed important socio-medical bills. He obtained the distinguished international awards in Europe, the U.S.A. and Latin America. The Biomedical Sciences Institute of the University of Chile carries his name. (Rev Méd Chile 2001; 129: 447-455)

Scientific Electronic Library Online (Spanish)

109

High-energy breakup of B-8

Meister, M.; Cortina-Gil, D.; Fernández-Vázquez, J.; Markenroth, K.; Attallah, F.; Baumann, T.; Benlliure, J.

3 pages, 3 figures, 2 tables. | One-proton removal reactions of 936 MeV/u B-8 have been studied with carbon and lead as breakup targets. Using the FRS at GSI, the longitudinal momentum distributions of the Be-7 fragments and the one-proton removal cross section of B-8 were measured. The relative con...

DRIVER (Spanish)

110

He-8 - He-6: a comparative study of electromagnetic fragmentation reactions

Meister, M.; Markenroth, K.; Aleksandrov, D.; Aumann, T.; Baumann, T.; García Borge, María José; Chulkov, L. V.

14 pages, 1 table, 2 figures.-- PACS nrs.:27.20.+n; 24.70.+.-- Available online Oct 8, 2001. | Dissociation of a 227 MeV/u He-8 beam in a lead target has been studied in a kinematically complete experiment. The results are compared with similar data from the well-known halo nucleus He-6. Coulomb-nuc...

DRIVER (Spanish)

112

Gamow-Teller strength distributions in Xe isotopes

Moreno, Óscar; Álvarez-Rodríguez, Raquel; Sarriguren, Pedro; Moya de Guerra, Elvira; Udías, J. M.; Rodríguez Vignote, Javier

9 pages, 4 tables, 4 figures.-- PACS nrs.: 21.60.Jz; 23.40.-s; 24.30.Gd; 27.60.+j.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-th/0610064v1 | The energy distributions of the Gamow-Teller (GT) strength are studied for even-even Xe isotopes with mass numbers from 124 to 142. A self-consi...

DRIVER (Spanish)

113

Gamow-Teller strength distributions in 76Ge and 76Se from deformed quasiparticle random-phase approximation

Sarriguren, Pedro; Moya de Guerra, Elvira; Pacearescu, L.; Faessler, Amand; Šimkovic, F.; Raduta, A. A.
2003-04-29

Digital.CSIC (Spain)

114

Fine structure in the beta-delayed proton decay of Ar-33

Honkanen, A.; Axelsson, L.; Äystö, J.; García Borge, María José; Jonson, B.; Jokinen, A.; Martel, Ismael

9 pages, 2 figures, 2 tables.-- PACS nrs.: 21.60.Cs; 23.40.−s; 27.30.+t; 29.30.Ep. | Low-energy beta-delayed protons from Ar-33 have been measured for the first time. The data reveal states, which, despite unfavourable barrier penetrability values, strongly decay to the first excited 2+ state in S-3...

DRIVER (Spanish)

115

Exploring the dipole polarizability of Li-11 at REX-ISOLDE

García Borge, María José; Gómez Camacho, Joaquín; Martel, Ismael; Tengblad, Olof
2001-07-16

Digital.CSIC (Spain)

116

Evolution of nuclear shapes in medium mass isotopes from a microscopic perspective

Robledo, L. M.; Rodríguez-Guzmán, R.; Sarriguren, Pedro
2008-09-22

Digital.CSIC (Spain)

117

Energy distributions of charged particles from three-body decay

Garrido, Eduardo; Fedorov, D.V.; Fynbo, H.O.U.; Jensen, A.S.
2007-01-15

Digital.CSIC (Spain)

118

Emission patterns of neutral pions in 40A MeV Ta plus Au reactions

Yahlali, Nadia; Díaz Medina, José; Matulewicz, T.; Delagrange, H.; Piasecki, K.; d'Enterria, D. G.; Fernández, F.; Kugler, A.; Lohner, H.; Martínez-García, G.; Ostendorf, R. W.; Schutz, Y.; Tlusty, P.; Turrisi, R.; Wagner, V.; Wilschut, H. W.
2010-05-28

Digital.CSIC (Spain)

119

Elemental analysis of mining wastes by energy dispersive X-ray fluorescence (EDXRF)

González-Fernández, Oscar; Queralt Mitjans, Ignacio; Carvalho, M.L.; García, G.
2007-05-01

Digital.CSIC (Spain)

120

Efimov effect and three-body decay

Jensen, A.S.; Fedorov, D.V.; Álvarez-Rodríguez, Raquel; Garrido, Eduardo
2007-05-01

Digital.CSIC (Spain)

121

Efimov Effect in Nuclear Three-Body Resonance Decays

Garrido, Eduardo; Fedorov, D.V.; Jensen, A.S.
2006-03-20

Digital.CSIC (Spain)

122

Disfunción mitocondrial en sepsis, impacto y posible papel regulador del factor inducible por hipoxia (HIF-1alfa)/ Mitochondrial dysfunction during sepsis, impact and possible regulating role of hypoxia-inducible factor -1alpha

Regueira, T.; Andresen, M.; Djafarzadeh, S.
2009-11-01

Resumen en español Existe una relación directa entre el desarrollo del síndrome de disfunción de órganos (SDOM) y la alta mortalidad asociada a sepsis. Los mecanismos causantes del desarrollo de SDOM permanecen en estudio, pero los mayores esfuerzos en su evaluación se han centrado en la optimización de la oxigenación tisular y en la modulación de la cascada inflamatoria característica de la sepsis, con resultados negativos. Estudios recientes muestran desarrollo de acidosis tisula (mas) r aun con niveles de oxigenación tisular adecuados y escasa presencia de necrosis o apoptosis celular en los tejidos afectados, lo que indica una disfunción celular energética como un elemento central en el desarrollo del SDOM. Las mitocondrias son la principal fuente energética celular, reguladores clave de la muerte celular y principal fuente de especies reactivas de oxígeno. Varios mecanismos contribuyen al desarrollo de disfunción mitocondrial durante la sepsis: el bloqueo en la entrada de piruvato al ciclo de Krebs, el consumo de sustratos de la fosforilación oxidativa por parte de otros complejos enzimáticos, la inhibición enzimática y el daño de membrana secundarios a estrés oxidativo, y la disminución en el contenido mitocondrial celular. El hypoxia inducible factor (HIF)-1alfa es un factor de trascripción que actúa como un regulador clave en la homeostasis del oxígeno celular. Su inducción en condiciones de hipoxia se asocia a la expresión de cientos de genes que coordinan la optimización de la entrega de oxígeno celular y el metabolismo energético celular. El HIF-1alfa puede estabilizarse en normoxia en presencia de inflamación; esta activación parece asociarse a un patrón de respuesta inmunitaria proinflamatorio, a una disfunción de linfocitos y a una disminución de consumo de oxígeno celular. Nuevos estudios deberán establecer un papel terapeútico en la modulación del HIF-1alfa. Resumen en inglés There is a direct correlation between the development of the multiple organ dysfunction syndrome (MODS) and the elevated mortality associated with sepsis. The mechanisms responsible for MODS development are being studied, however, the main efforts regarding MODS evaluation have focused on oxygen delivery optimization and on the modulation of the characteristic inflammatory cascade of sepsis, all with negative results. Recent studies have shown that there is development of (mas) tissue acidosis, even when there are normal oxygen conditions and limited presence of tissue cellular necrosis or apoptosis, which would indicate that cellular energetic dysfunction may be a central element in MODS pathogenesis. Mitochondrias are the main source of cellular energy, central regulators of cell death and the main source for reactive oxygen species. Several mechanisms contribute to mitochondrial dysfunction during sepsis, that is blockage of pyruvate entry into the Krebs cycle, oxidative phosphorylation substrate use in other enzymatic complexes, enzymatic complex inhibition and membrane damage mediated by oxidative stress, and reduction in mitochondrial content. Hypoxia-inducible factor-1alpha (HIF-1alpha) is a nuclear transcription factor with a central role in the regulation of cellular oxygen homeostasis. Its induction under hypoxic conditions is associated to the expression of hundreds of genes that coordinate the optimization of cellular oxygen delivery and the cellular energy metabolism. HIF-1alpha can also be stabilized under normoxic condition during inflammation and this activation seems to be associated with a prominent pro-inflammatory profile, with lymphocytes dysfunction, and to a reduction in cellular oxygen consumption. Further studies should establish a role for HIF-1alpha as a therapeutic target.

Scientific Electronic Library Online (Spanish)

123

Dielectron production in C-12(+) C-12 collisions at 2 A GeV with HADES

Markert, J.; Agakishiev, G.; Agodi, C.; Balanda, A.; Bellia, G.; Belver, D.; Belyaev, A.; Blanco Blanco Blanco, Alfonso

5 pages, 2 figures.-- ISI Article Identifier: 000248251400153 | Printed version published on Aug 2007. | We report on a measurement of electron pair production in C-12(+) C-12 collisions at an incident energy of 2 GeV per nucleon with the HADES spectrometer. The measured pair production probabilitie...

DRIVER (Spanish)

124
125

Deformed quasiparticle random phase approximation formalism for single- and two-neutrino double β decay

Álvarez-Rodríguez, Raquel; Sarriguren, Pedro; Moya de Guerra, Elvira
2004-12-13

Digital.CSIC (Spain)

127

Collective flavor transitions of supernova neutrinos

Esteban-Pretel, Andreu; Pastor, Sergio; Sigl, G.; Tomàs, Ricard; Mirizzi, A.; Raffelt, G.G.; Serpico, P.D.
2009-03-01

Digital.CSIC (Spain)

128

Clarification of the low-lying states of Be-9

García Borge, María José; Prezado, Yolanda; Tengblad, Olof; Fynbo, H. O. U.; Riisager, K.; Jonson, B.
2006-06-28

Digital.CSIC (Spain)

130

Charge radii and structural evolution in Sr, Zr, and Mo isotopes

Rodriguez-Guzman, R.; Sarriguren, Pedro; Robledo, L.M.; Perez-Martin, S.
2010-08-01

Digital.CSIC (Spain)

132

Charge exchange operators sum rules and proton–neutron T=0 and T=1 pairing interactions

Moya de Guerra, Elvira; Raduta, A. A.; Zamick, L.; Sarriguren, Pedro
2003-11-03

Digital.CSIC (Spain)

133

Can gas hydrate structures be described using classical simulations?

Conde, M M; Vega, C; McBride, C; Noya, E G; Ramirez, R; Sese, L M
2010-03-15

Digital.CSIC (Spain)

134

CP violation and electric-dipole-moment at low energy τ production with polarized electrons

Bernabéu, José; González-Sprinberg, G. A.; Vidal, Jorge

10 pages, 2 figures.-- ISI Article Identifier: 000243912400014.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0610135 | Printed version published on Feb 12, 2007. | The new proposals for high luminosity B/Flavor factories, near and on top of the Y resonances, allow for a detailed inves...

DRIVER (Spanish)

135
136

CP violation

Pich, Antonio
1994-06-01

Digital.CSIC (Spain)

137

CNA: The first accelerator-based IBA facility in Spain

García López, Francisco Javier; Ager, Francisco José; Barbadillo, M.; Madrigal, F. J.; Ontalba, Maria Ángeles; Respaldiza, Miguel Ángel; Ynsa, M. D.
2000-03-01

Digital.CSIC (Spain)

138

Beta-delayed triton emission in the decay of He-8

García Borge, María José; Epherre-Rey-Campagnolle, M.; Guillemaud-Mueller, D.; Jonson, B.; Langevin, M.

8 pages,1 table, 5 figures. | A β-delayed triton branch with an intensity of (0.9 ± 0.1)% has been observed in the decay of He-8. The triton energy spectrum was measured with a specially designed ΔE − E telescope. These data as well as an earlier measured β-delayed neutron spectrum cannot be explain...

DRIVER (Spanish)

139

Beta-delayed triton emission in the decay of He-8

García Borge, María José; Epherre-Rey-Campagnolle, M.; Guillemaud-Mueller, D.; Jonson, B.; Langevin, M.; Nyman, G.; Thibault, C.
1986-12-01

Digital.CSIC (Spain)

140

Beta-delayed multiparticle emission studies at ISOL-type facilities

García Borge, María José; Bergmann, U. C.; Boutami, Rafik; Cederkäll, J.; Dendooven, P.; Fraile, Luis M.; Fynbo, H. O. U.; Huang, W. X.; Huikari, J.; Jading, Y.; Jeppesen, H.; Jokinen, A.; Jonson, B.; Martel, Ismael; Meister, M.; Nilsson, T.; Nyman, G.; Prezado, Yolanda; Riisager, K.; Tengblad, Olof; Weissman, L.; Wilhelmsen, K.; Äystö, J.
2004-11-19

Digital.CSIC (Spain)

142

Beta decay of Ar-31

Axelsson, L.; Äystö, J.; García Borge, María José; Fraile, Luis M.; Fynbo, H. O. U.; Honkanen, A.; Hornshoj, P.; Jokinen, A.; Jonson, B.; Lipas, P. O.; Martel, Ismael; Mukha, I.; Nilsson, T.; Nyman, G.; Petersen, B.; Riisager, K.; Smedberg, M. H.; Tengblad, O.
1998-05-18

Digital.CSIC (Spain)

143

Beta decay and shape isomerism in Kr-74

Sarriguren, Pedro; Moya de Guerra, Elvira; Escuderos, A.; Carrizo, A.C.
1998-05-25

Digital.CSIC (Spain)

144

Beauty at the LHC

Pich, Antonio; Prades, Joaquim
1990-01-01

Digital.CSIC (Spain)

145

Baryon decuplet in the chiral dynamics of Λ hyperons in nuclear matter

Martín Cámalich, Jorge; Vicente Vacas, Manuel J.

6 pages, 5 figures.-- PACS nrs.: 21.80.+a; 21.65.+f; 13.75.Ev; 24.10.Cn.-- ISI Article Identifier: 000245332200063.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-th/0611082 | We study the long range part of the Λ-hyperon optical potential in nuclei using quantum many body techniques and ...

DRIVER (Spanish)

146

Baryon decuplet in the chiral dynamics of Λ hyperons in nuclear matter

Martín Cámalich, Jorge; Vicente Vacas, Manuel J.
2007-03-28

Digital.CSIC (Spain)

147

Asymmetry in the super-allowed β-transitions of the A=9 isobars

García Borge, María José; Prezado, Yolanda; Bergmann, U. C.; Boutami, Rafik; Cederkäll, J.; Diget, C. Aa.; Fraile, Luis M.; Fynbo, H. O. U.; Jading, Y.; Jeppesen, H.; Jonson, B.; Martel, Ismael; Meister, M.; Nilsson, T.; Nyman, G.; Riisager, K.; Simon, H.; Tengblad, Olof; Weissman, L.; Wenander, F.; Wilhelmsen, K.
2004-06-28

Digital.CSIC (Spain)

148

Arsenic in the cooper´s minerals: An option from the pirometalurgy

García Carcedo, Fernando; Verdeja González, L. Felipe; Mochón Muñoz, J.; Ruiz Bustinza, I.
2009-11-01

Digital.CSIC (Spain)

149

Anatomy of three-body decay III: Energy distributions

Garrido, Eduardo; Fedorov, D.V.; Jensen, A.S.; Fynbo, H.O.U.
2006-02-20

Digital.CSIC (Spain)

150

Anatomy of three-body decay I: schematic models

Garrido, Eduardo; Fedorov, D.V.; Jensen, A.S.; Fynbo, H.O.U.
2005-02-07

Digital.CSIC (Spain)

153

A full-configuration interaction "nuclear orbital'' method to study doped 3He(N) clusters (N<=4)

Lara Castells, M. Pilar de; Delgado Barrio, Gerardo; Villarreal, Pablo; Mitrushchenkov, A. O.
2006-12-08

Digital.CSIC (Spain)

154

A complete kinematics approach to study multi-particle final state reactions

Alcorta, Martín; Kirsebom, O.; García Borge, María José; Fynbo, H.O.U.; Riisager, K.; Tengblad, Olof
2009-04-10

Digital.CSIC (Spain)

155

Lara Castells, M. Pilar de; Delgado Barrio, Gerardo; Villarreal, Pablo; Mitrushchenkov, A. O.

4 pages, 1 figure, 2 tables.-- PACS nrs.: 36.40.Cg; 31.25.-v; 33.15.Ry. | An efficient full configuration interaction (FCI) treatment, based on the Jacobi-Davidson algorithm, is developed in order to study small doped 3He(N) clusters. The state of each He atom in a given cluster is described by a se...

DRIVER (Spanish)

156

(K)over-bar* mesons in dense matter

Tolós, Laura; Molina, Raquel; Oset, Eulogi; Ramos, A.
2010-10-29

Digital.CSIC (Spain)

157

Nuclear structure of light exotic nuclei from break-up reactions

Cortina, D.; Fernández-Vázquez, J.; Aumann, T.; Baumann, T.; Benlliure, J.; García Borge, María José; Chulkov, L. V.; Pramanik, U. Datta; Forssén, C.; Fraile, Luis M.; Geissel, H.; Gerl, J.; Hammache, F.; Itahashi, K.; Janik, R.; Jonson, B.; Mandal, S.; Markenroth, K.; Meister, M.; Mocko, M.; Münzenberg, G.; Ohtsubo, T.; Ozawa, A.; Prezado, Yolanda; Pribora, V.; Riisager, K.; Scheit, H.; Schneider, R.; Schrieder, G.; Simon, H.; Sitar, B.; Stolz, A.; Strmen, P.; Sümmerer, K.; Szarka, I.; Weick, H.
2004-11-19

Digital.CSIC (Spain)

158

Nuclear shape transition in light gold isotopes

Wallmeroth, K.; Bollen, G.; Dohn, A.; Egelhof, P.; Krönert, U.; García Borge, María José; Campos, J.; Rodríguez Yunta, A.; Heyde, K.; De Coster, C.; Wood, J. L.; Kluge, H.-J.; [ISOLDE Collaboration]
1989-03-06

Digital.CSIC (Spain)

159

Nuclear isospin mixing and elastic parity-violating electron scattering

Moreno, Oscar; Sarriguren, Pedro; Moya de Guerra, Elvira; Udias, J.M.; Donnelly, T.W.; Sick, I.
2009-09-15

Digital.CSIC (Spain)