WorldWideScience

Sample records for acidos grasos omega

  1. Contenidos de isomeros trans de los acidos grasos en productos carnicos (I). Embutidos

    Hernández, N.; Codony Salcedo, Rafael; Rafecas Martínez, Magdalena; Boatella Riera, Josep

    1991-01-01

    En este trabajo se determinan los contenidos de isómeros trans de la fracción de los ácidos grasos, en muestras de embutidos diversos (total 48 muestras), mediante extracción previa de la fracción grasa y posterior análisis por cromatografía de gases capilar, con columna CP Sil 88. Los resultados muestran una gran variabilidad, entre 0,14 y 1,63% de C18:1 t y entre 0,37 y 2,14% de formas trans totales.

  2. ENRIQUECIMIENTO DE HUEVOS CON ÁCIDOS GRASOS OMEGA-3 MEDIANTE LA SUPLEMENTACIÓN CON SEMILLA DE LINO (Linum usitatissimum EN LA DIETA

    Gonzalo Díaz

    2009-04-01

    Full Text Available Objetivo. Enriquecer los huevos de gallina con ácidos grasos omega-3 (n-3 mediante la inclusión de semillas de lino en la dieta. Materiales y métodos. La dieta de las aves fue formulada con niveles de 0 (L0, 10 (L10, 15 (L15 y 20% (L20 de linaza. Se determinó la composición de ácidos grasos por cromatografía de gases y se evaluó la producción y calidad del huevo. Resultados. El porcentaje de producción de huevo fue superior en los grupos L0 y L15 (p<0.05 con 93,0 y 91,5% de producción comparada con 86,0 % en los grupos L10 y L20. La mejor conversión de alimento se presentó también en los grupos L0 y L15. Con la inclusión de semilla de lino, se incrementó el contenido de ácidos grasos n-3 desde 3,0 % en el grupo L0 hasta 12,6 % en el grupo L20, siendo los ácidos grasos n-3 á-linolénico (C18:3, n-3 y docosahexahenóico (DHA, C22:6, n-3 los hallados en mayor concentración. Con la inclusión de linaza en la dieta de las gallinas ponedoras se redujo el contenido de acido linoleico (C18:2n-6, lo cual resultó en una disminución en la relación n-6: n-3. Conclusiones. Con base en la evaluación económica se concluye que es posible enriquecer la yema de huevo de gallina hasta con un 10,1 % de ácidos grasos n-3 mediante la inclusión de un 15 % de linaza en la dieta de las gallinas, sin embargo, esto representó un sobrecosto de producción del 12%.

  3. Contenidos de isomeros trans de los acidos grasos en productos carnicos. (III) Tejido adiposo y grasa intramuscular de vacuno

    Lluch, M. C.; Roca de Vinyals, M.; Parcerisa Egea, Javier; Guardiola Ibarz, Francesc; Codony Salcedo, Rafael; Rafecas Martínez, Magdalena; Boatella Riera, Josep

    1993-01-01

    Se presentan los resultados obtenidos para la determinación de ácidos grasos en una serie de muestras de tejidos subcutáneo y muscular, procedentes de canales de vacuno, por aplicación de la cromatografía en fase gaseosa, para los que se obtuvieron unos valores medios de 58.7% de ácidos saturados, 39.1 % de monoinsaturados y 2.7% de polinsaturados, en el tejido adiposo, y de 44.7% de saturados, 46.1% de monoinsaturados y 9.4% de polinsaturados, en el tejido muscular. Los contenidos de ácidos ...

  4. Revisión de los niveles de acidos grasos trans encontrados en distintos tipos de alimentos

    Vicario, I. M.

    2007-03-01

    Full Text Available In this paper a comprehensive review of trans-fatty acid levels reported in different types of food products is offered. The lowest levels are found in some types of bread (0,1% while the highest levels (up to 40% are found in fried potatoes. Some foods like shortenings, cakes and pastries may have up to 30% of these fatty acids. In milk and dairy products the reported levels are between 1.50% and 5.20%, in meat and derived products between 0.20% and 21,30%; in chocolates from 0% to 15, 70%. The greatest variability is found in margarines, where a variety has been reported from “trans-free products” to products containing up to 34. 30%. In relation to the trans-fatty acid profile, 18:1t is the most abundant fatty acid found in the majority of foods, followed by C18:2t, C18:3t, C18:1t y C14:1t. Due to the negative health effects of these fatty acids, there is a trend to reduce their levels in food products and to include them in the nutritional label of food packaging.En este trabajo se realiza una exhaustiva revisión bibliográfica de los contenidos en grasos trans en alimentos de distinto origen. Los niveles más bajos se encuentran en algunos tipos de pan (0,10%, y los más elevados (hasta 40%, en algunas muestras de patatas fritas. Alimentos tales como shortenings, algunos tipos de galletas y bollería contienen hasta el 30% de dichos ácidos grasos. En las leches y derivados se encuentran cantidades entre 1,50% y 5,20%; en carnes y derivados entre 0,20% y 21,30%; en chocolates desde cantidades nulas hasta 15,70%. La mayor variabilidad se registra en margarinas, entre las que se encuentran desde las “libres de trans”, hasta algunas con 34,30% de estos ácidos grasos. En cuanto a los distintos isómeros, el mayoritario es el C18:1t seguido del C18:2t, C18:3t, C18:1t y C14:1t. Debido a los efectos desfavorables que presentan sobre la salud se observa en los últimos años una tendencia a reducir este tipo de ácidos grasos en algunos

  5. ACIDO LINOLEICO CONJUGADO: UN ACIDO GRASO CON ISOMERIA TRANS POTENCIALMENTE BENEFICIOSO CONJUGATED LINOLEIC ACID: A TRANS ISOMER FATTY ACID POTENTIALLY BENEFICIAL

    Julio Sanhueza C

    2002-08-01

    Full Text Available El ácido linoleico conjugado (ALC es un ácido graso que presenta un tipo de isomeria trans, y que tiene variados efectos beneficiosos para la salud. La estructura de ALC más común que existe en la naturaleza, corresponde a la configuración del isómero 9c (cis, 11t (trans. El ALC se encuentra normalmente en tejidos y/o secreciones (leche de rumiantes y es formado por la isomerización del ácido linoleico, por acción de la bacteria del rúmen llamada Butyrivibrio fibrisolvens. ALC puede ser sintetizado, tanto en rumiantes como en no rumiantes, por la desaturación del ácido vaccenico (18:1, 11t en el tracto intestinal y/o en el hígado de estos animales. La ingestión diaria de ALC es muy variable (0,5 g/día-1,5g/día, ya que depende por una parte de los hábitos nutricionales ya sea individuales o regionales, y por otra, del consumo de carne, leche o derivados de la leche. Se han descritos diversas propiedades nutricionales y biológicas para los diversos isómeros de ALC, entre las más relevantes se destacan: su efecto hipocolesterolémico y antiaterogénico, su acción inmuno-estimulante, la protección que ofrece contra cierto tipo de cánceres, su función antioxidante y la participación en la reduccción de peso corporal. Sin embargo, la confirmación definitiva de todos estos efectos beneficiosos para la salud, requiere de un mayor cuerpo de evidencias clínicas y experimentales que avalen sin lugar a dudas estas acciones de ALC. En la actualidad, diversos productos que contienen ALC se ofrecen en los mercados para la venta, los de mayor éxito, son aquellos productos que muestran que los isómeros de ALC que contienen, permiten reducir pesoConjugated linoleic acid (CLA is a type of isomeric trans fatty acid that has been demonstrated to have diverse health beneficial effects. The most common naturally existing structural form of CLA is the 9c (cis, 11t (trans isomeric configuration. CLA, which is commonly found in the tissues

  6. Interacciones en monocapas de colesterol con ácidos grasos saturados e insaturados (omega-3, omega-6 y omega-9)

    Fidalgo Rodríguez, José Luis

    2016-01-01

    El tipo de monocapa generada por los ácidos grasos estudiados depende de sus características estructurales de tal forma que la saturación de las cadenas hidrocarbonadas de las moléculas de ácido esteárico (18:0) facilita la constitución de una monocapa muy condensada y un valor del área límite muy pequeño. La presencia de insaturaciones en las cadenas hidrocarbonadas de las moléculas reduce drásticamente su grado de empaquetamiento, lográndose la formación de monocapas en estado superficial l...

  7. EFECTO DE LA ADICION DE ACIDOS GRASOS POLIINSATURADOS SOBRE LA DINAMICA FOLICULAR, TASA DE GESTACIÓN Y RESPUESTA OVÁRICA EN OVEJAS PELIBUEY

    J. Herrera Camacho

    2003-01-01

    El objetivo general del presente trabajo fue evaluar el efecto de la adición de ácidos grasos poliinsaturados en la dieta sobre la dinámica folicular, la tasa de fertilidad, prolificidad y respuesta superovulatoría en ovejas Pelibuey. Se realizaron tres experimentos. El experimento uno, se realizó en la Facultad de Medicina Veterinaria y Zootecnia durante el período julio-septiembre del año 2000. Se utilizaron 30 ovejas Pelibuey de condición corporal similar con el objeto de evaluar el efecto...

  8. ENRIQUECIMIENTO DE HUEVOS CON ÁCIDOS GRASOS OMEGA-3 MEDIANTE LA SUPLEMENTACIÓN CON SEMILLA DE LINO (Linum usitatissimum) EN LA DIETA

    Gonzalo Díaz; Liliana Betancourt

    2009-01-01

    Objetivo. Enriquecer los huevos de gallina con ácidos grasos omega-3 (n-3) mediante la inclusión de semillas de lino en la dieta. Materiales y métodos. La dieta de las aves fue formulada con niveles de 0 (L0), 10 (L10), 15 (L15) y 20% (L20) de linaza. Se determinó la composición de ácidos grasos por cromatografía de gases y se evaluó la producción y calidad del huevo. Resultados. El porcentaje de producción de huevo fue superior en los grupos L0 y L15 (p

  9. Caracterización y cuantificación de los ácidos grasos omega 3 y omega 6 presentes en el aceite de Sacha inchi (Plukenetia volubilis L)

    Sánchez Sánchez, Guillermo León

    2013-01-01

    Resumen: Plukenetia volubilis, conocida como sacha inchi (maní del Inca) es una planta trepadora, semileñosa y perenne, nativa de la Amazonía Peruana. Sus semillas son ricas en proteínas y aceite de alta calidad, importantes en la alimentación humana, y aplicaciones en salud, cosmética y medicina, debido al alto contenido de ácidos grasos insaturados del tipo omega-3 y omega-6. Por lo que es considerado un cultivo promisorio para la industria agroalimentaria. El presente trabajo se llevo a ca...

  10. Índice elevado de ácidos grasos omega 6/omega 3 en niños con neuropatías causa o efecto

    E. Cortés

    2013-08-01

    Full Text Available Introducción: Los ácidos grasos n-3 y n-6 compiten por las mismas elongasas y desaturasas, siendo muy deficiente la síntesis de ácidos grasos poliinsaturados n-3 a partir de ácido linolénico. Los poliinsaturados n-3 previenen enfermedades y son importantes en el desarrollo y mantenimiento de las actividades neuronales, siendo necesaria una relación adecuada con sus antagonistas n-6. En este trabajo se estudia la proporción de estos ácidos grasos. Material y métodos: Se han analizado los ácidos grasos n-3 y n-6 en sueros y fosfolípidos de membrana de 374 niños con neuropatías y de 34 niños sanos, mediante cromatografía de gases con detector de masas. Se ha realizado el estudio estadístico pertinente. Resultados: Los ácidos grasos n-3 (EPA y DHA en suero y su correspondientes fosfolípidos de membrana correlacionan mejor que los de la familia n-6. Los mayoritarios n-6 (LA y ARA están en igual proporción en sueros, siendo más elevados significativamente en los fosfolípidos de los niños sanos. Los n-3 (EPA y DHA tienen valores más altos en los niños sanos, tanto en suero como en fosfolípidos, su suma se iguala en los fosfolípidos de membrana. El índice n-6/n-3 es mayor en los niños con trastorno neurológico en ambas muestras. Conclusión: No siendo la causa de la neuropatía el alto índice n-6/n-3, sin embargo es aconsejable incrementar la ingesta de n-3, sobre todo DHA en toda la población y en especial en los niños con trastornos neurológicos.

  11. Modificacion del Valor Nutrimental de Acidos Grasos en Semilla de la Halofita Salicornia bigelovii Torr. con la Interaccion de Bacterias Promotoras del Crecimiento de Plantas (Azospirillum halopraeferens y Klebsiella pneumoniae)

    Edgar Omar Rueda Puente; Enrique Troyo Dieguez; Thelma Castellanos Cervantes; Bernardo Murillo-Amador; Bertha Olivia Arredondo Vega; Jose Luis Díaz de Leon Alvarez; Mario Antonio Tarazon Herrera

    2005-01-01

    Una especie vegetal a gran escala se presenta como una alternativa para la producción de ácidos grasos esenciales en nutrición humana por lo que su composición de ácidos grasos cobra especial importancia. Salicornia bigelovii una halófita que se desarrolla en ambientes áridos y costeros como las del estado de Sonora y de la península de Baja California Sur, México, presenta ser una especie alternativa en la producción de aceites comestibles. La fijación de N2 por bacterias asociadas con raíce...

  12. Propuesta de perfil de ácidos grasos omega 3 en nutrición enteral Proposed profile of omega 3 fatty acids in enteral nutrition

    A. Sanz París

    2012-12-01

    Full Text Available Revisamos las recomendaciones internacionales de ingesta oral de ácidos grasos n-3.y su contenido en las fórmulas de nutrición enteral. Sus acciones metabólicas dependen de su metabolización a EPA y DHA. La actividad de las 5D y 6D desaturasas, que catalizan este proceso, aumenta con el ejercicio, insulina, estrógenos de mujer fértil y proliferadores peroxisómicos, mientras que disminuye con el ayuno, déficit de proteínas y oligoelementos, edad > 30 años, sedentarismo, tabaco, alcohol, colesterol, ácidos grasos trans y saturados, insulinopenia y hormonas de estrés (adrenalina y glucocorticoides. La mayoría de las guías recomiendan 20-35% de la energía total en forma de grasas, repartidas en saturadas 7-10%, poliinsaturadas 6-10% y monoinsutaradas en España 20%. El de AG n-3 es de 0,5-2 g/día o bien 0,5-2% de la ingesta calórica total, con un límite superior de 3 g/día. El de AG n-6 es del 2,5-10% del aporte calórico total y el cociente recomendado n-6/n-3 no está bien definido pero la mayoría recomienan 5/1. El contenido en EPA y DHA, debe ser de al menos los 500 mg diarios. Por último, la ratio EPA/DHA en la mayoría es de 2/1. Las fórmulas de nutrición estándar presentan un contenido en grasas adecuado, pero la mayoría de los productos que contienen EPA y DHA exceden el límite de los 3 g/día. De los productos hiperproteicos y/o concentrados por vía oral sólo un producto de este grupo contiene EPA y DHA. Las del anciano frágil no todas aportan EPA y DHA y las que los contienen, su concentración puede ser incluso excesiva y en una relación poco parecida a la del aceite de pescado.We review the international recommendations on oral intake of n-3 fatty acids and their content in the enteral nutrition formulas. Their metabolic actions depend on their metabolization to EPA and DHA. The activity of desaturases catalyzing this process increases with exercise, insulin, estrogens in the fertile women, and peroxisomal

  13. Influencia de los ácidos grasos poliinsaturados omega-3 y omega-6 de la dieta y de sus metabolitos en la respuesta inmune de tipo alérgico

    Deivis Javier Villanueva-Pájaro

    2015-04-01

    Full Text Available Las tasas de prevalencia para las enfermedades alérgicas han incrementado en gran medida en los últimos cincuenta años, tanto en países desarrollados como en vías de desarrollo. En estos últimos, dicho incremento está representado principalmente por la población de niños y adolescentes; un evento que a su vez se concibe como un problema relevante de salud pública mundial. Varios factores han sido propuestos para explicar las causas de esta problemática, entre los que destaca la hipótesis de la dieta, señalando que componentes específicos de la alimentación y cambios en los patrones del mismo propiciarían el desarrollo de las alergias e influirían en el incremento de su prevalencia. En apoyo de lo anterior, la hipótesis de las grasas expone que paralelo al aumento de las alergias a nivel global, ha existido también un consumo excesivo de alimentos con alto contenido de ácidos grasos omega-6 y bajos en omega-3, principalmente en dietas occidentales y como resultado de intervenciones en prevención del riesgo cardiovascular, lo que en conjunto pudiera explicar parte de este fenómeno mundial. La evidencia a nivel epidemiológico y experimental muestra que ambas series de lípidos y varios de sus metabolitos ejercen un importante papel modulador en la patología alérgica, aspectos que serán abordados en la presente revisión temática.

  14. Influence of omega-3 fatty acids from the flaxseed (Linum usitatissimum on the brain development of newborn rats Influencia de los ácidos grasos omega-3 de la linaza (Linum usitatissimum en el desarrollo del cerebro de ratas recién nacidas

    K. C. Lenzi Almeida

    2011-10-01

    Full Text Available Objectives: The importance of essential fatty acids, in particular the omega-3 family, in the central nervous system development of newborns is well documented. The flaxseed (Linum usitatissimum is considered one of the best vegetable sources of omega-3 fatty acids. The influence of omega-3 fatty acids from flaxseed on the brain development of newborn rats was evaluated. Material and methods: Pups of the F1 generation were obtained from 18 female Wistar rats divided in 3 groups (n = 6, FG: fed with diet based on Flaxseed added with casein, CG: Casein, and MCG: Modified Casein supplemented with fibers and soybean oil. Newborn pups were weighted and submitted to euthanasia; brains were collected for evaluation of weight and lipid profile through gaseous chromatography. Results: Significant increase in brain weight (39% and relative brain weight (37% was verified in pups from mothers fed with flaxseed diet. The omega-3 (n-3 fatty acids from the flaxseed were found in abundance in the diet made with this oleaginous and also significant increase in docosahexaenoic acid (DHA (38%, as well as in total of omega-3 (n-3 fatty acids (62%. Conclusion: Maternal diet of flaxseed during pregnancy influences the incorporation of omega-3 fatty acid in the composition of brain tissue, assuring a good development of this organ in newborn rats.Objetivos: La importancia de los ácidos grasos esenciales, en particular la familia omega-3, en el desarrollo del sistema nervioso central de los recién nacidos está bien documentada. La semilla de linaza (Linum usitatissimum es considerada una de las mejores fuentes vegetales de ácidos grasos omega-3. Se evaluó la influencia de los ácidos grasos omega-3 de la linaza en el desarrollo del cerebro de ratas recién nacidas. Material y métodos: Las crías de la generación F1 se obtuvieron a partir de 18 ratas Wistar divididas en 3 grupos (n = 6, GL: alimentados con dieta a base de linaza adicionada con caseína, GC: a

  15. Modificacion del Valor Nutrimental de Acidos Grasos en Semilla de la Halofita Salicornia bigelovii Torr. con la Interaccion de Bacterias Promotoras del Crecimiento de Plantas (Azospirillum halopraeferens y Klebsiella pneumoniae

    Edgar Omar Rueda Puente

    2005-01-01

    Full Text Available Una especie vegetal a gran escala se presenta como una alternativa para la producción de ácidos grasos esenciales en nutrición humana por lo que su composición de ácidos grasos cobra especial importancia. Salicornia bigelovii una halófita que se desarrolla en ambientes áridos y costeros como las del estado de Sonora y de la península de Baja California Sur, México, presenta ser una especie alternativa en la producción de aceites comestibles. La fijación de N2 por bacterias asociadas con raíces de Salicornia bigelovii y halófitas similares son una fuente importante de nitrógeno disponible en ecosistemas costeros. La inoculación de Klebsiella pneumoniae y Azospirillum halopraeferens fue evaluada durante el desarrollo vegetativo de Salicornia bigelovii bajo condiciones de campo en dos genotipos (genotipo silvestre y cv. SOS-10, afectando positivamente variables como peso, longitud de plantas, rendimientos de producción y características bioquímicas como proteína total, ceniza, y contenido de lípidos totales en semilla producida. Nuestros resultados sugieren que ambos genotipos de S. bigelovii, bajo las condiciones de campo empleadas, pueden ser mejorados con la aplicación de K. pneumoniae y A. halopraeferens, mostrando una utilidad potencial para productores agrícolas de zonas semiáridas costeras.

  16. Análisis bibliométrico y temático de la producción científica sobre ácidos grasos omega-3 indizada en las bases de datos internacionales sobre ciencias de la salud Bibliometric and thematic analysis of the scientific literature about omega-3 fatty acids indexed in international databases on health sciences

    J. Sanz-Valero

    2012-11-01

    Full Text Available Objetivo: Evaluar mediante el análisis bibliométrico y temático la producción científica sobre ácidos grasos omega-3 indizada en las bases de datos internacionales sobre ciencias de la salud, estableciendo a su vez una base comparativa para análisis futuros. Método: Las búsquedas se realizaron, con el Descriptor (MeSH, como Major Topic "Fatty Acids, Omega-3" desde la primera fecha disponible hasta el 31 de diciembre de 2010. Bases de datos consultadas: MEDLINE (via PubMed, EMBASE, ISI Web of Knowledge, CINAHL y LILACS. Resultados: El artículo original fue la tipología documental más frecuente. La obsolescencia se estableció en 5 años. La distribución geográfica de los autores que aparecen como primer firmante fue estadounidense, estando los artículos escritos predominantemente en inglés. La población a estudio fue el 90,98% (IC95% 89,25-92,71 adultos humanos. Los documentos se clasificaron en 59 áreas temáticas; el tema más estudiado, 16,24% (IC95% 14,4-18,04 relacionado con los ácidos grasos omega-3, fueron las enfermedades cardiovasculares. Conclusión: Este estudio indica que la literatura científica sobre ácidos grasos omega-3 se trata de un área de conocimiento de plena vigencia y actualidad, donde predominan las instituciones anglosajonas y está orientado principalmente al estudio de las enfermedades cardiovasculares.Objective: To evaluate by bibliometric and thematic analysis the scientific literature on omega-3 fatty acids indexed in international databases on health sciences and to establish a comparative base for future analysis. Method: Searches were conducted with the descriptor (MeSH, as Major Topic "Fatty Acids, Omega-3" from the first date available until December 31, 2010. Databases consulted: MEDLINE (via PubMed, EMBASE, ISI Web of Knowledge, CINAHL and LILACS. Results: The most common type of document was originals articles. Obsolescence was set at 5 years. The geographical distribution of authors who

  17. Acidos grasos de juveniles de Prochilodus lineatus (Valenciennes) (Pisces, curimatidae)

    Bayo, V.; Cordiviola de Yuan, E.

    1992-01-01

    Les juvéniles pêchés dans des petites mares de la plaine alluviale du Parana moyen (31° 45' S-60° 45' W) ont été séparés en deux classes de taille : 27-38 mm et 75-94 mm. Les poissons de taille inférieure à 38 mm contiennent 37,4 % d'acides de nombre de carbone et d'insaturation supérieurs à l'acide oléique. Cette composition correspond au régime alimentaire planctonique et à la morphologie du système intestinal. (Résumé d'auteur)

  18. Acidos graso de Prochilodus lineatus (Val.) (Pisces, Curimatidae)

    Bayo, V.; Cordiviola de Yuan, E.

    1992-01-01

    Les acides gras des dépots graisseux du mésenlère de #Prochilodus lineatus$ ont été analysés pour saisons (été et hiver). Les poissons étudiés ont été capturés dans le cours principal du Parana moyen (Argentine). Les acides les plus importants sont l'acide oléique (18:1) avec 27,15%, l'acide palmitique (16:6) avec 23,99% et l'acide palmitoleique (16:1) avec 13,90%. Ces acides sont plus abondants en hiver. Les acides supérieurs (en carbone et en insaturation) sont moins abondants en hiver (16,...

  19. Efectos cardiovasculares de los ácidos grasos Omega-3 y alternativas para incrementar su ingesta Cardiovascular effects of omega-3-fatty acids and alternatives to increase their intake

    J.J. Carrero

    2005-02-01

    Full Text Available Las enfermedades cardiovasculares son la principal causa de mortalidad en Europa, Estados Unidos y gran parte de Asia. Existen varios factores de riesgo asociados a las enfermedades cardiovasculares, entre ellos están el colesterol total, la homocisteína y los triglicéridos elevados, la hipertensión, la diabetes y niveles reducidos de colesterol HDL. Muchos de estos factores de riesgo son influenciables por la dieta. A pesar de la gran cantidad de alimentos enriquecidos en ácidos grasos n-3 disponibles en el mercado, el conocimiento de los efectos originados por el consumo regular de estos alimentos supone aún un reto en la mayoría de los casos. La ingesta de alimentos enriquecidos en ácidos grasos poliinsaturados n-3 parece ser una opción que puede ser eficaz en la reducción de factores de riesgo de enfermedades, sustituyendo a los suplementos sin originar cambios en los hábitos alimentarios del consumidor. También se muestran los resultados procedentes de un estudio nutricional que hemos llevado a cabo con un alimento funcional de base láctea que contiene ácidos grasos n-3, ácido oleico y vitaminas.Cardiovascular diseases are the main mortality cause in Europe, the USA and a great extent of Asia. There are several risk factors associated with cardiovascular diseases, such as increased total cholesterol, homocysteine and triglycerides, hypertension, diabetes, and reduced levels of HDL-cholesterol. Many of these risk factors are diet influenced. In spite of the great amount of foods enriched with n-3 fatty acids available at the market, the knowledge about the effects produced by regular intake of these foods still is a challenge in the majority of cases. It appears that intake of foods enriches with n-3 polyunsatured fatty acids is an option that may be effective in reducing risk factors for diseases, by substituting supplements without modifying consumer's alimentary habits. Also shown are the outcomes from a nutritional study

  20. Estabilidad oxidativa de huevos enriquecidos con ácidos grasos poliinsaturados omega 3, frente a antioxidantes naturales Estabilidade oxidativa de ovos enriquecidos com ácidos graxos poliinsaturados ômega 3, frente a antioxidantes naturais

    María Elena Bernal Gómez

    2003-12-01

    Full Text Available Fueron alimentadas 192 gallinas ponedoras de 22 semanas de edad, de linaje comercial Babcock, durante 30 días con dietas de 0 (cero y 12,7% de semilla de linaza molida que corresponde a 0 y 5% de aceite de linaza, respectivamente. Fueron definidos 8 tratamientos: 4 grupos con 12,7% de semilla de linaza (control/sin antioxidante; BHA+BHT, 100+100 ppm; orégano, 200 ppm; romero, 200 ppm y 4 grupos sin semilla de linaza, pero utilizando los mismos antioxidantes. Este estudio fue realizado con el objetivo de verificar la eficacia del uso de antioxidantes naturales provenientes del orégano y del romero en la protección contra el deterioro oxidativo de la fracción lipídica de las yemas de los huevos enriquecidos con ácidos grasos poliinsaturados omega 3 (PUFA É-3. El grado de oxidación lipídica fue determinado a través de la prueba TBARS (substancias reactivas con ácido tiobarbitúrico. Según los resultados obtenidos, fue verificada diferencia significativa en la reducción del grado de oxidación lipídica de las yemas de huevo en todos los tratamientos con antioxidantes, cuando se compara con el control. Por lo tanto, los extratos de los condimentos, romero y orégano, pueden ser utilizados satisfactoriamente para obtener huevos enriquecidos con PUFA É-3, mejorando la estabilidad lipídica.Foram alimentadas 192 galinhas poedeiras de 22 semanas de idade da linhagem comercial Babcock, durante 30 dias com dietas constituídas de 0 (zero e 12,7% de semente de linhaça moída correspondente a 0 e 5% de óleo de linhaça, respectivamente. Foram definidos 8 tratamentos: 4 grupos com 5% de óleo de linhaça (controle/sem antioxidante; BHA+BHT, 100+100 ppm; orégano, 200 ppm; alecrim, 200 ppm e 4 grupos sem óleo de linhaça, mas utilizando os mesmos antioxidantes. Este estudo foi realizado com o objetivo de verificar a eficácia do uso de antioxidantes naturais provenientes do orégano e do alecrim, na proteção contra a deteriora

  1. Lipid lowering effect of policosanol and omega-3 fatty acids combined therapy in hypercholesterolemic patients

    José Illnait

    2010-01-01

    Full Text Available Aunque el colesterol de las lipoproteinas de baja densidad (LDL-C continua siendo el principal objetivo en el manejo de la dislipidemia, la prevencion de la enfermedad coronaria incluye ademas, la modificacion de otros indicadores tales como la disminucion del colesterol no unido a las lipoproteinas de alta densidad y los trigliceridos sericos (TG, asi como el incremento de las HDL-C. Se reconoce que los aceites de pescado ricos en acidos grasos omega 3 (AG-OMEGA3, los cuales reducen los TG sericos y el colesterol no unido a HDL, pueden disminuir el riesgo de los eventos cardiovasculares a traves de estos efectos y a traves de otros efectos no relacionados con los lipidos (reduccion de la frecuencia cardiaca, efectos antiarritmicos, discreta reduccion de la hipertension arterial y de la agregacion plaquetaria. El efecto de AG-OMEGA3 sobre las HDL y el colesterol total (CT puede ser variable y en ocasiones tiende a incrementar las concentraciones de las LDL-C en el suero. El policosanol ha demostrado que reduce las LDL-C y CT mientras que incrementa las HDL-C en individuos normocolesterolemicos e hiperlipidemicos, con un efecto marginal e inconsistente sobre los trigliceridos. El policosanol administrado concomitantemente con OMEGA-3-FA durante un corto periodo demostro que reduce la LDL-C y el CT mientras que aumenta las HDL-C mas que el placebo AG-OMEGA3 + placebo, sin afectar el efecto reductor de los TG de los AG-OMEGA3. No se ha reportado, sin embargo, la persistencia de tales efectos. Este estudio investiga si los beneficios de la administracion de AG-OMEGA3 + policosanol (AG-OMEGA3-poli persisten despues de una terapia mas prolongada (24 semanas. Despues de un periodo de dieta solamente, 60 pacientes se distribuyeron, aleatoriamente y a doble ciegas, en dos grupos. Uno de los grupos fue tratado con AG-OMEGA3 (1 g/d + placebo (AG-OMEGA3-pla mientras que el otro recibio AG-OMEGA3 (1 g/d + policosanol 10 mg/d . Las variables de laboratorio

  2. Suplementação de ácidos graxos ômega 3 em atletas de competição: impacto nos mediadores bioquímicos relacionados com o metabolismo lipídico Adición de ácidos grasos omega 3 en atletas de competición: impacto en los mediadores bioquímicos relacionados con el metabolismo lipídico Omega 3 fatty acids-supplementation to competition athletes: impact on the biochemical indicators related to the lipid metabolism

    Priscila de Mattos Machado Andrade

    2006-12-01

    Full Text Available OBJETIVO: Avaliar o efeito da suplementação dos ácidos graxos ômega 3 em atletas de natação sobre indicadores bioquímicos. MÉTODOS: Nadadores de elite (n = 14 do sexo masculino foram avaliados em estudo randomizado, controlado por placebo pelo período de seis semanas (45 dias. O grupo placebo (GP recebeu óleo mineral (n = 6 e o grupo suplementado (n = 8, óleo de peixe (GOP contendo, no total, 950mg de ácido eicosapentaenóico e 500mg de ácido docosapentaenóico. Amostras de sangue foram coletadas imediatamente antes (T0, aos 15 (T15, aos 30 (T30 e aos 45 (T45 dias de suplementação para análise da composição dos ácidos graxos por cromatografia gasosa e para quantificação das lipoproteínas plasmáticas através de kits comerciais específicos. RESULTADOS: Os resultados revelaram um desajuste na dieta dos atletas considerando a ingestão g/kg de massa corporal dos macronutrientes. A análise do questionário de freqüência de consumo mostrou que os atletas não ingeriram regularmente fontes alimentares de ômega 3 e que o consumo de peixes, em 85% da amostra, era inferior ou igual a uma vez na semana. O perfil de ácidos graxos plasmáticos evidenciou aumento dos ácidos graxos poliinsaturados ômega 3 (P 0,05. CONCLUSÃO: A suplementação de ácidos graxos N-3 em atletas nadadores altera os indicadores bioquímicos do metabolismo lipídico, influenciando na redução das lipoproteínas plasmáticas, ricas em colesterol e na prevenção de doenças cardiovasculares.OBJETIVO: Evaluar el efecto suplementar de los ácidos grasos omega 3 en atletas de natación sobre indicadores bioquímicos. MÉTODOS: Nadadores de elite (n = 14 del sexo masculino fueron evaluados en estudio aleatorio, controlado por placebo por un período de 6 semanas (45 días. El grupo placebo (GP recibió aceite mineral (n = 6 y el grupo suplementado (n = 8 recibió aceite de pescado (GOP conteniendo en total 950 mg de ácido eicosapentaenóico y 500 mg de

  3. Omega 3 fatty acids supplementation has an ameliorative effect in experimental ulcerative colitis despite increased colonic neutrophil infiltration Los suplementos de ácidos grasos omega 3 tienen efectos beneficiosos en colitis ulcerosa a pesar del aumento de la infiltracción por neutrófilos del colon

    Ioannis Varnalidis

    2011-10-01

    Full Text Available Purpose: omega 3 polyunsaturated fatty acids have anti-inflammatory properties and can be beneficial in the treatment of inflammatory diseases, such as ulcerative colitis. Dextran sodium sulphate (DSS colitis in rats appears to mimic nearly all of the morphological characteristics and lesion distributions of ulcerative colitis. The purpose of the current study was to investigate the efficacy of omega 3 fatty acids in the treatment of experimental ulcerative colitis. Methods: thirty-six Wistar rats were randomly assigned to group A or group B receiving 5% dextran sulfate sodium (DSS in their drinking water for eight days. For the next eight days post-DSS, group A animals received tap-water, and group B animals were fed a nutritional solution containing high levels of omega 3 polyunsaturated fatty acids (ProSure®, Abbott Laboratories, Zwolle, Netherlands once per day, administrated with a orogastric feeding tube. Results: animals fed an omega 3 rich diet exhibited a statistically significant increase in hematocrit and hemoglobin levels, compared to animals drinking tap water, and a trend towards histopathological and clinical improvement, with the administration of omega 3 fatty acids ameliorating epithelial erosion by day 8 post-DSS, but no statistically significant difference was observed between group A and group B animals at 4 or 8 days post-DSS. Also, a statistically significant increase in neutrophil infiltration was observed, as depicted by myelohyperoxidase activity. Conclusion: our findings support a positive role of omega 3 polyunsaturated fatty acids supplementation in an experimental model of ulcerative colitis despite the increased colonic neutrophil infiltration. Further studies are needed in order to investigate the role of increased neutrophils in colonic mucosa.

  4. Deficiencia de ácidos grasos esenciales en el feto y en el recién nacido pretérmino

    Virginia Díaz-Argüelles Ramírez-Corría

    2001-01-01

    Se informa que los ácidos grasos poliinsaturados de cadena larga son esenciales en la nutrición del feto y el recién nacido (RN). Tanto la familia omega 3(omega-3) como la omega 6(omega-6), tienen 2 actividades biológicas importantes que son la integridad de las membranas celulares y la formación de prostaglandinas y tromboxanos. El cerebro fetal se desarrolla precozmente y el 60 % de su material estructural son los lípidos, por lo tanto existe una relación entre el estado nutricional de la m...

  5. Monocapas de ácidos grasos. I. Ácido esteárico sobre disoluciones acuosas de etanol

    Rodríguez Patino, J. M.

    1991-04-01

    Full Text Available The structure and stability of fatty acid monolayers spread on aqueous solutions with ethanol has been studied. The experiments were carried out isothermically using a commercial Langmuir balance (Lauda. Monolayers exhibit solid or condensed liquid structure depending of the ethanol concentration in the subphase. Temperature has not a significant influence on the monolayer. Structure there is a loss of stearic acid film through solution into the adjacent subphase. This loss is increased with the temperature and ethanol concentration in the subphase.

    Monocapas de ácidos grasos. I. Acido esteárico sobre disoluciones acuosas de etanol. Se ha estudiado la estructura y estabilidad de monocapas de ácido esteárico esparcidas sobre disoluciones acuosas que contienen etanol. Las experiencias se han realizado en una balanza de superficie comercial tipo Langmuir y se ha operado en condiciones isotérmicas. Las monocapas presentan estructuras de tipo sólida o de líquido condensado en función de la concentración de etanol en la subfase. La estructura que adopta la monocapa es prácticamente independiente de la temperatura. La pérdida de moléculas de ácido esteárico de la monocapa por disolución en la subfase se incrementa a los valores más elevados de temperatura y de concentración de etanol.

  6. OMEGA 6

    Fivi Melva Diana

    2012-09-01

    Full Text Available Kejadian gizi kurang di Indonesia dari tahun ke tahun masihtinggi Penyebab tingginya angka kejadian gizi kurang di Indonesia salah satunya diduga karena kurangnya konsumsi makanan sumber omega 6, secara alami terdapat pada minyak biji-bijian, minyakjagung dan kacang kedelai. Omega 6 merupakan asam lemak tak jenuh ganda yang mempunyai banyak manfaat terutama untuk pertumbuhan dan perkembangan kecerdasan balita. Tulisan ini membahas tentang defenisi omega 6, sumber, klasifikasi, manfaat dan kerugian bila mengkonsumsi omega 6. Disarankan untuk melakukan penelitian lebih lanjut mengenai hubungan konsumsi omega 6 dengan tumbuh-kembang anak, selain itu bagi ibu-ibu disarankan untuk memperhatikan konsumsi makanan dari sumber omega 6 guna pengoptimalan tumbuh-kembang anak. Hal ini jika terlaksana dapat memberikan dukungan terhadap program pemerintah di bidang promosi kesehatan.

  7. B Meson Decays to mega K*, omega rho, omega omega, omega phi, and omega f0

    Aubert, B.; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; /Annecy, LAPP; Grauges, E.; /Barcelona; Palano, A.; /Bari U. /INFN, Bari; Chen, J.C.; Qi, N.D.; Rong, G.; Wang, P.; Zhu, Y.S.; /Beijing, Inst. High Energy Phys.; Eigen, G.; Ofte, I.; Stugu, B.; /Bergen U.; Abrams,; /LBL, Berkeley /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /Bristol U. /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San Diego

    2006-07-28

    The authors describe searches for B meson decays to the charmless vector-vector final states {omega}K*, {omega}p, {omega}{omega}, and {omega}{phi} with 233 x 10{sup 6} B{bar B} pairs produced in e{sup +}e{sup -} annihilation at {radical}s = 10.58 GeV. They also search for the vector-scalar B decay to {omega}f{sub 0}.

  8. About spaces of $\\omega_1$-$\\omega_2$-ultradifferentiable functions

    Schmets, Jean; Valdivia, Manuel

    2008-01-01

    Let $\\Omega_1$ and $\\Omega_2$ be non empty open subsets of $\\mathbb R^r$ and $\\mathbb R^s$ respectively and let $\\omega_1$ and $\\omega_2$ be weights. We introduce the spaces of ultradifferentiable functions $\\mathcal{E}_{(\\omega_1,\\omega_2)}(\\Omega_1 \\times \\Omega_2)$, $\\mathcal{D}_{(\\omega_1,\\omega_2)}(\\Omega_1 \\times \\Omega_2)$, $\\mathcal{E}_{\\{\\omega_1,\\omega_2\\}}(\\Omega_1 \\times \\Omega_2)$ and $\\mathcal{D}_{\\{\\omega_1,\\omega_2\\}}(\\Omega_1 \\times \\Omega_2)$, study their l...

  9. B Meson Decays to mega K*, omega rho, omega omega, omega phi, and omega f0

    The BABAR Collaboration; Aubert, B.

    2006-01-01

    We describe searches for B meson decays to the charmless vector-vector final states omega K*, omega rho, omega omega, and omega phi with 233 times 10^{6} BB pairs produced in e+e- annihilation at sqrt{s}=10.58 GeV. We also search for the vector-scalar B decay to omega f_0. We measure the following branching fractions in units of 10^{-6}: BR(B0 --> omega K*0) = 2.4 +/- 1.1 +/- 0.7 ( omega K*+) = 0.6 {+1.4}_{-1.2} {+1.1}_{-0.9} ( omega rho0) = -0.6 +/- 0.7 {+0.8}_{-0.3} ( omega rho+) = 10.6 +/-...

  10. Efecto de la suplementación materna con DHA durante la gestación y la lactancia sobre la señalización inflamatoria y el patrón de ácidos grasos en la madre, leche materna y el recién nacido

    Rodríguez Santana, Yéssica

    2015-01-01

    Programa de doctorado: Perspectivas actuales en la investigación en Perinatología, Ginecología y Pediatría [ES]Objetivo: determinar si la suplementación de la dieta materna con ácidos grasos de cadena larga omega-3 durante el último trimestre de gestación y periodo de lactancia puede influir en los niveles de determinadas citoquinas implicadas en el proceso de inflamación y en el patrón de ácidos grasos de la madre, de la leche materna y del...

  11. Modificación en la composición de ácidos grasos del huevo al incluir aceite de sardina y ácido linoleico conjugado en dietas para gallinas ponedoras Modulation in egg fatty acids composition when laying hens diets are supplemented with sardine oil and conjugated linoleic acid

    Carrillo, S.; E. Ávila; C.Vásquez; C Calvo; ME Carranco; F. Pérez-Gil

    2012-01-01

    Actualmente el consumo regular de ácidos grasos omega 3 (C18:3 ALA, C20:5 EPA, C22:6 DHA) y de ácido linoleico conjugado (C18:2 CLA) es recomendado debido a la importancia que estos compuestos bioactivos tienen en la prevención y control de enfermedades cardiovasculares, diabetes y diferentes tipos de cáncer. El objetivo de este estudio fue determinar el efecto sobre la composición en ácidos grasos del huevo cuando la dieta de las gallinas es suplementada con aceite de sardina y CLA. 240 gall...

  12. Pseudoscalar production at omega omega threshold in J/psi -> gamma omega omega

    Bes Collaboration

    2006-01-01

    The decay channel J/\\psi->gamma omega omega, omega -> pi+ pi- pi0 is analyzed using a sample of 5.8x10^7 J/psi events collected with the BESII detector. The omega omega invariant mass distribution peaks at 1.76 GeV/c^2, just above the omega omega threshold. Analysis of angular correlations indicate that the omega omega system below 2 GeV/c^2 is predominantly pseudoscalar. A partial wave analysis confirms the predominant pseudoscalar structure, together with small 0^{++} and 2^{++} contributio...

  13. Cross linkage studies with the membranes of the vesicular stomatitis virus using radioactive 4-acido and 5-acido palmitic acid

    In the study described here the spatial arrangement of lipids and proteins in the VS virus was investigated on the basis of the covalent cross linkage technique. The formation of such cross linkages is brought about by the action of photosensitive acidosubstituted lipids, which permit acido functions to be introduced into a membrane in a previously defined position. Subsequently, photolysis helps to trigger the generation of radioactive nitrenes that react with the proteins and lipids in their immediate vicinity in a direct and non-selective way. The findings revealed by this study have raised questions as to the possibility of lipid-protein and lipid-lipid interactions, which is also discussed. (orig./MG)

  14. Efecto de la suplementación de la dieta ovina con distintas fuentes lipídicas sobre el perfil de ácidos grasos de la leche

    Gómez-Cortés, Pilar

    2010-01-01

    La leche y los productos lácteos son una de las fuentes de aporte de lípidos en nuestra alimentación. Aunque la grasa de leche posee niveles altos de ácidos grasos saturados (C14:0 y C16:0 principalmente) también contiene otros que podrían tener efectos beneficiosos en la salud de los consumidores. Es bien conocido el papel preventivo de los ácidos grasos omega-3 en las enfermedades cardiovasculares, pero en los últimos años la grasa láctea ha despertado un gran interés por su contenido en ác...

  15. Omega documentation

    Howerton, R.J.; Dye, R.E.; Giles, P.C.; Kimlinger, J.R.; Perkins, S.T.; Plechaty, E.F.

    1983-08-01

    OMEGA is a CRAY I computer program that controls nine codes used by LLNL Physical Data Group for: 1) updating the libraries of evaluated data maintained by the group (UPDATE); 2) calculating average values of energy deposited in secondary particles and residual nuclei (ENDEP); 3) checking the libraries for internal consistency, especially for energy conservation (GAMCHK); 4) producing listings, indexes and plots of the library data (UTILITY); 5) producing calculational constants such as group averaged cross sections and transfer matrices for diffusion and Sn transport codes (CLYDE); 6) producing and updating standard files of the calculational constants used by LLNL Sn and diffusion transport codes (NDFL); 7) producing calculational constants for Monte Carlo transport codes that use group-averaged cross sections and continuous energy for particles (CTART); 8) producing and updating standard files used by the LLNL Monte Carlo transport codes (TRTL); and 9) producing standard files used by the LANL pointwise Monte Carlo transport code MCNP (MCPOINT). The first four of these functions and codes deal with the libraries of evaluated data and the last five with various aspects of producing calculational constants for use by transport codes. In 1970 a series, called PD memos, of internal and informal memoranda was begun. These were intended to be circulated among the group for comment and then to provide documentation for later reference whenever questions arose about the subject matter of the memos. They have served this purpose and now will be drawn upon as source material for this more comprehensive report that deals with most of the matters covered in those memos.

  16. Omega documentation

    OMEGA is a CRAY I computer program that controls nine codes used by LLNL Physical Data Group for: 1) updating the libraries of evaluated data maintained by the group (UPDATE); 2) calculating average values of energy deposited in secondary particles and residual nuclei (ENDEP); 3) checking the libraries for internal consistency, especially for energy conservation (GAMCHK); 4) producing listings, indexes and plots of the library data (UTILITY); 5) producing calculational constants such as group averaged cross sections and transfer matrices for diffusion and Sn transport codes (CLYDE); 6) producing and updating standard files of the calculational constants used by LLNL Sn and diffusion transport codes (NDFL); 7) producing calculational constants for Monte Carlo transport codes that use group-averaged cross sections and continuous energy for particles (CTART); 8) producing and updating standard files used by the LLNL Monte Carlo transport codes (TRTL); and 9) producing standard files used by the LANL pointwise Monte Carlo transport code MCNP (MCPOINT). The first four of these functions and codes deal with the libraries of evaluated data and the last five with various aspects of producing calculational constants for use by transport codes. In 1970 a series, called PD memos, of internal and informal memoranda was begun. These were intended to be circulated among the group for comment and then to provide documentation for later reference whenever questions arose about the subject matter of the memos. They have served this purpose and now will be drawn upon as source material for this more comprehensive report that deals with most of the matters covered in those memos

  17. The importance of the fatty acids in breast milk and in lacteal formulae; La importancia de los acidos grasos en la leche materna y en las formulas lacteas

    Vega, S.; Gutierrez, R.; Radilla, M.; Ramirez, A.; Perez, J. J.; Schettino, B.; Ramirez, M. L.; Ortiz, R.; Fontecha, J.

    2012-11-01

    The best choice for feeding the newborn child is breast milk, and when it is not possible to breast feed a baby, the breast milk is replaced by lacteal formula, which is why numerous studies focus their attention on the analysis of the diverse components of baby formula as well as functions in the breast fed baby. Fatty acids are components of great nutritional importance in the fetus and in the newborn child. Nowadays it is estimated that the fetus, during the last trimester of the gestational period and the newborn child, during the first six months of life, need a great contribution of araquidonic and docosahexaenoic acids, due to the fact that the speed of transformation of the predecessors to the hepatic level are not sufficient to cover the metabolic requirements of these fatty acids and it is the mother who contributes them through placental transport during gestation and her milk during lactation. The Organization of Food and Agriculture (FAO), the World Health Organization (WHO), the European Society of Gastroenterology, Hepato logy and Pediatric Nutrition (ESPGHAN) and the American Academy of Pediatrics recommend that lacteal formula imitate the composition of the breast milk, especially in the fatty polyunsaturated acids (PUFA). (Author) 61 refs.

  18. Influencia de la grasa en las propiedades físicas y sensoriales de galletas. Alternativas para la mejora del perfil de acidos grasos

    Tarancón Serrano, Paula Isabel

    2013-01-01

    La presente tesis doctoral se basa en el desarrollo de galletas con menor contenido en grasa mejorando además el perfil lipídico de las mismas. Para ello se reemplazará totalmente la grasa presente en la formulación de las galletas por oleogeles a base de aceites vegetales y diferentes espesantes y se estudiará como afecta dicho reemplazo a las propiedades reológicas de la masa y a las propiedades de textura de la galleta. Por último, se realizará un estudio sensorial para ver la opinión del ...

  19. El acido esteárico: un posible sustituto para los ácidos grasos trans de origen industrial

    Tavella, Marcelo; Delplanque, Bernadette; Valenzuela, Alfonso

    2011-01-01

    Trans isomers, contained in partially hydrogenated oils, which are used in the food industry, have been questioned and nowadays trends are heading towards reducing their consumption. The food industry is facing a dilemma, since in order to remove trans fatty acids, hydrogenated fats should be eliminated and replaced by fats rich in saturated fatty acids. Scientific research has shown that saturated fatty acids have negative effects on the lipid profile and its consumption is associated with a...

  20. Removing volatile fatty acids during the anaerobic treatment of pig sewage; Remocion de acidos grasos volatiles durante el tratamiento anaerobio de aguas residuales porcicolas

    Vazquez Borges, E.; Mendez Novelo, R.; Magana Pietra, A.; Partinez Pereda, P.; Fernandez Villagomez, G. [Facultad de Ingenieria, Universidad Atuonoma de Yucatan. Mexico (Mexico)

    1997-06-01

    This study examined the behaviour of a hybrid anaerobic digester in treating pig farm sewage. The experimental model consisted of a 208-litre UASB reactor at the bottom and a 195-litre high-rate sedimentator at the top. The digester was installed on a pig farm and its efficiency in removing volatile (acetic and propionic) fatty acids (VFA) was determined with hydraulic retention time (HTR) as the critical parameter for evaluating the anaerobic system`s performance. The results obtained with the five different HRTs used during the experiment are reported. The highest removal rates were obtained with an HRT of 2.8 days: 98% in the UASB, 28% in the sedimentator and 98% in the digester as a whole. An HRT of 1 day gave VFA removal rates of 40%, 12% and 50% in the UASB reactor sedimentator and digest respectively. (Author) 16 refs.

  1. Ácidos grasos en la dieta diabetes mellitus e insulino resistencia

    Pérez G., Clara Eugenia; Guerrero F., Carlos Arturo

    2014-01-01

    La resistencia a la insulina es característica de ladiabetes mellitus tipo 2. Como parte del tratamientose recomienda los diabéticos, sustituir en lasdietas los ácidos grasos saturados y el colesterolpor ácidos grasos monoinsaturados; sin que esténdel todo claro los mecanismos bioquímicosque beneficiarían a los pacientes. Es probable,entre otros mecanismos, que los ácidos grasosmonoinsaturadosaumenten la sensibilidad a lainsulina. Esta revisión analiza la relación entre eltipo de ácido graso ...

  2. Omega-3 Fatty Acids

    Omega-3 fatty acids are used together with lifestyle changes (diet, weight-loss, exercise) to reduce the amount ... the blood in people with very high triglycerides. Omega-3 fatty acids are in a class of medications ...

  3. The omega-6/omega-3 fatty acid ratio: health implications

    Simopoulos Artemis P.

    2010-01-01

    Today, Western diets are characterized by a higher omega-6 and a lower omega-3 fatty acid intake, whereas during the Paleolithic period when human’s genetic profile was established, there was a balance between omega-6 and omega-3 fatty acids. Their balance is an important determinant for brain development and in decreasing the risk for coronary heart disease (CHD), hypertension, cancer, diabetes, arthritis, and other autoimmune and possibly neurodegenerative diseases. Both omega-6 and omega-3...

  4. COMPOSICIÓN DE ÁCIDOS GRASOS DE SACHA INCHI (Plukenetia volúbilis Linneo) Y SU RELACIÓN CON LA BIOACTIVIDAD DEL VEGETAL FATTY ACID COMPOSITION OF INCA PEANUT (Plukenetia volúbilis Linneo) AND ITS RELATIONSHIP WITH VEGETAL BIOACTIVITY

    Diego Leandro Castaño T; María del Pilar Valencia G; Elizabeth Murillo P.; Jonh Jairo Mendez A; Jordi Eras Joli

    2012-01-01

    A partir de extractos etanólicos de hojas y raíces de Plukenetia volúbilis L, se evaluó la presencia de ácidos grasos omega (FAc) y funcionales. El aceite de las semillas de la planta, extraído por Soxhlet y a través de un biorreactor, fue caracterizado físicamente, se le determinó el perfil lipídico mediante cromatografía de gases acoplada a espectrometría de masas (CG-EM) y, se evaluó el potencial antioxidante (ABTS-HRP). El análisis dejó ver que el aceite del vegetal contiene ácidos grasos...

  5. A suplementação de ácidos graxos ômega 3 e triglicérides de cadeia média não alteram os indicadores metabólicos em um teste de exaustão La suplementacion de ácidos grasos omega 3 en los trigliceridos de cadena media como alteración en los indicadores metabólicos en un test de agotamiento The supplementation of omega-3 lipids and medium chain triglicerides do not affect metabolic indicators in the exhaustion test

    Carlos Alexandre Fett

    2004-02-01

    Full Text Available PROPÓSITO: Este estudo compara os efeitos do treinamento de força (TF com ou sem a suplementação de lipídios ômega 3 (W-3 ou triglicérides de cadeia média (TCM, nos indicadores metabólicos em um teste de exaustão (TE. MÉTODOS: Grupo W-3 (GW-3: n = 7, 26,7 ± 6 anos de idade; 82,6 ± 10kg e grupo TCM (GTCM: n = 5, 18,8 ± 1,3 ano de idade; 74,6 ± 9,7kg com 11 meses mínimos em TF. Houve dois momentos de TE: depois de 28 dias somente com TF e coletas de sangue antes (M1a e após (M1d, e após mais 28 dias de TF mais a suplementação com W-3 ou TCM e repetindo o mesmo procedimento (M2a e M2d. RESULTADOS: O hematócrito (Ht, osmolalidade (Os, sódio (Na+ e pressão de dióxido de carbono (PCO2 não tiveram mudanças significativas em nenhum momento, grupo ou D M2 (P > 0,05. A pressão de oxigênio (PO2 aumentou significativamente após TE nos dois momentos e grupos (P PROPÓSITO: Este estudio compara los efectos de entrenamiento de fuerza (TF con o sin la suplementación de lípidos omega 3 (W-3 o triglicéridos de cadena media (TCM, los indicadores metabólicos en un test de agotamiento (TE. MÉTODOS: Grupo W-3 (GW-3: n = 7, 26,7 ± 6 años de idade; 82,6 ± 10 kg y grupo TCM (GTCM: n = 5, 18,8 ± 1,3 año de edad; 74,6 ± 9,7 kg con 11 meses mínimos en TF. Hubo 2 momentos de TE: después de 28 días solamente con TF y colectas de sangre antes (M1a y después (M1d, y después de mas de 28 días de TF más la suplementación con W-3 o TCM y repitiendo el mismo procedimiento (M2a e M2d. RESULTADOS: El hematocrito (Ht, osmolalidad (Os, sodio (Na+ y presión de dióxido de carbono (PCO2 no tuvieron cambios significativos en ningún momento, grupo de D M2 (P > 0,05. La presión de oxígeno (PO2 aumentó significativamente después TE los dos momentos y grupos (P OBJECTIVE: This study compares the effects of strength training (ST with or without supplementation of omega-3 lipids (W-3 or medium chain triglycerides (MCT in metabolic

  6. Estudio del contenido de ácidos grasos superiores en veinte variedades tropicales de soya

    Boris Kocelj Ramírez

    2009-05-01

    Full Text Available Muy poco se sabe acerca del contenido de ácidos grasos en las diferentes variedades tropicales de soya. En este trabajo se estudiaron veinte variedades tropicales de soya en lo referente a su contenido de aceite y en ácidos grasos. Se determinaros las propiedades físicas y químicas del aceite que lo caracteizan como comestible. El contenido cualitativo y cuantitativo de ácidos grasos individuales se investigó utilizando la técnica de cromatografía de gases. Se analizaron los éteres correspondientes, obtenidos por esterificación catalítica completa con trifluoruro de Boro-metanol. Se encontraron diferencias significativas entre las propiedades de los aceites de las variedades estudiadas. Se identificaron los ácidos: palmítico, esteárico, linoleico y linolénico

  7. Omega-6 Fatty Acids

    ... Some types are found in vegetable oils, including corn, evening primrose seed, safflower, and soybean oils. Other ... ACIDS are as follows:Improving mental development or growth in infants. Adding arachidonic acid (an omega-6 ...

  8. The omega-6/omega-3 fatty acid ratio: health implications

    Simopoulos Artemis P.

    2010-09-01

    Full Text Available Today, Western diets are characterized by a higher omega-6 and a lower omega-3 fatty acid intake, whereas during the Paleolithic period when human’s genetic profile was established, there was a balance between omega-6 and omega-3 fatty acids. Their balance is an important determinant for brain development and in decreasing the risk for coronary heart disease (CHD, hypertension, cancer, diabetes, arthritis, and other autoimmune and possibly neurodegenerative diseases. Both omega-6 and omega-3 fatty acids influence gene expression. Because of single nucleotide polymorphisms (SNPs in their metabolic pathways, blood levels of omega-6 and omega-3 fatty acids are determined by both endogenous metabolism and dietary intake making the need of balanced dietary intake essential for health and disease prevention. Whether an omega-6/omega-3 ratio of 3:1 to 4:1 could prevent the pathogenesis of many diseases induced by today’s Western diets (AFSSA, 2010, a target of 1:1 to 2:1 appears to be consistent with studies on evolutionary aspects of diet, neurodevelopment, and genetics. A target of omega-6/omega-3 fatty acid ratio of 1:1 to 2:1 appears to be consistent with studies on evolutionary aspects of diet, neurodevelopment and genetics. A balanced ratio of omega-6/omega-3 fatty acids is important for health and in the prevention of CHD and possibly other chronic diseases.

  9. OMEGA Upgrade preliminary design

    The OMEGA laser system at the Laboratory for Laser Energetics of the University of Rochester is the only major facility in the United States capable of conducting fully diagnosed, direct-drive, spherical implosion experiments. As such, it serves as the national Laser Users Facility, benefiting scientists throughout the country. The University's participation in the National Inertial Confinement Fusion (ICF) program underwent review by a group of experts under the auspices of the National Academy of Sciences (the Happer Committee) in 1985. The Happer Committee recommended that the OMEGA laser be upgraded in energy to 30 kJ. To this end, Congress appropriated $4,000,000 for the preliminary design of the OMEGA Upgrade, spread across FY88 and FY89. This document describes the preliminary design of the OMEGA Upgrade. The proposed enhancements to the existing OMEGA facility will result in a 30-kHJ, 351-nm, 60-beam direct-drive system, with a versatile pulse-shaping facility and a 1%--2% uniformity of target drive. The Upgrade will allow scientists to explore the ignition-scaling regime, and to study target behavior that is hydrodynamically equivalent to that of targets appropriate for a laboratory microfusion facility (LMF). In addition, it will be possible to perform critical interaction experiments with large-scale-length uniformly irradiated plasmas

  10. Evidence for the decay B0 --> omega omega and search for B0 --> omega phi

    Lees, J P; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, D N; Kerth, L T; Kolomensky, Yu G; Lee, M J; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, T S; McKenna, J A; So, R Y; Khan, A; Blinov, V E; Buzykaev, A R; Druzhinin, V P; Golubev, V B; Kravchenko, E A; Onuchin, A P; Serednyakov, S I; Skovpen, Yu I; Solodov, E P; Todyshev, K Yu; Yushkov, A N; Lankford, A J; Mandelkern, M; Dey, B; Gary, J W; Long, O; Campagnari, C; Sevilla, M Franco; Hong, T M; Kovalskyi, D; Richman, J D; West, C A; Eisner, A M; Lockman, W S; Vazquez, W Panduro; Schumm, B A; Seiden, A; Chao, D S; Cheng, C H; Echenard, B; Flood, K T; Hitlin, D G; Miyashita, T S; Ongmongkolkul, P; Porter, F C; Andreassen, R; Huard, Z; Meadows, B T; Pushpawela, B G; Sokoloff, M D; Sun, L; Bloom, P C; Ford, W T; Gaz, A; Nauenberg, U; Smith, J G; Wagner, S R; Ayad, R; Toki, W H; Spaan, B; Schwierz, R; Bernard, D; Verderi, M; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, I M; Piccolo, M; Rama, M; Zallo, A; Contri, R; Guido, E; Vetere, M Lo; Monge, M R; Passaggio, S; Patrignani, C; Robutti, E; Bhuyan, B; Prasad, V; Morii, M; Adametz, A; Uwer, U; Lacker, H M; Dauncey, P D; Mallik, U; Chen, C; Cochran, J; Meyer, W T; Prell, S; Ahmed, H; Gritsan, A V; Arnaud, N; Davier, M; Derkach, D; Grosdidier, G; Diberder, F Le; Lutz, A M; Malaescu, B; Roudeau, P; Stocchi, A; Wormser, G; Lange, D J; Wright, D M; Coleman, J P; Fry, J R; Gabathuler, E; Hutchcroft, D E; Payne, D J; Touramanis, C; Bevan, A J; Di Lodovico, F; Sacco, R; Cowan, G; Bougher, J; Davis, C L; Denig, A G; Fritsch, M; Gradl, W; Griessinger, K; Hafner, A; Prencipe, E; Schubert, K R; Barlow, R J; Lafferty, G D; Cenci, R; Hamilton, B; Jawahery, A; Roberts, D A; Cowan, R; Dujmic, D; Sciolla, G; Cheaib, R; Patel, P M; Robertson, S H; Biassoni, P; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Sonnek, P; Summers, D J; Simard, M; Taras, P; De Nardo, G; Monorchio, D; Onorato, G; Sciacca, C; Martinelli, M; Raven, G; Jessop, C P; LoSecco, J M; Honscheid, K; Kass, R; Brau, J; Frey, R; Sinev, N B; Strom, D; Torrence, E; Feltresi, E; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben-Haim, E; Bomben, M; Bonneaud, G R; Briand, H; Calderini, G; Chauveau, J; Leruste, Ph; Marchiori, G; Ocariz, J; Sitt, S; Biasini, M; Manoni, E; Pacetti, S; Rossi, A; Angelini, C; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Cervelli, A; Chrzaszcz, M; Forti, F; Giorgi, M A; Lusiani, A; Oberhof, B; Paoloni, E; Perez, A; Rizzo, G; Walsh, J J; Pegna, D Lopes; Olsen, J; Smith, A J S; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Gioi, L Li; Piredda, G; Buenger, C; Dittrich, S; Gruenberg, O; Hartmann, T; Leddig, T; Voss, C; Waldi, R; Adye, T; Olaiya, E O; Wilson, F F; Emery, S; Vasseur, G; Anulli, F; Aston, D; Bard, D J; Benitez, J F; Cartaro, C; Convery, M R; Dorfan, J; Dubois-Felsmann, G P; Dunwoodie, W; Ebert, M; Field, R C; Fulsom, B G; Gabareen, A M; Graham, M T; Hast, C; Innes, W R; Kim, P; Kocian, M L; Leith, D W G S; Lewis, P; Lindemann, D; Lindquist, B; Luitz, S; Luth, V; Lynch, H L; MacFarlane, D B; Muller, D R; Neal, H; Nelson, S; Perl, M; Pulliam, T; Ratcliff, B N; Roodman, A; Salnikov, A A; Schindler, R H; Snyder, A; Su, D; Sullivan, M K; Va'vra, J; Wagner, A P; Wang, W F; Wisniewski, W J; Wittgen, M; Wright, D H; Wulsin, H W; Ziegler, V; Purohit, M V; White, R M; Wilson, J R; Randle-Conde, A; Sekula, S J; Bellis, M; Burchat, P R; Puccio, E M T; Alam, M S; Ernst, J A; Gorodeisky, R; Guttman, N; Peimer, D R; Soffer, A; Spanier, S M; Ritchie, J L; Ruland, A M; Schwitters, R F; Wray, B C; Izen, J M; Lou, X C; Bianchi, F; De Mori, F; Filippi, A; Gamba, D; Zambito, S; Lanceri, L; Vitale, L; Martinez-Vidal, F; Oyanguren, A; Villanueva-Perez, P; Albert, J; Banerjee, Sw; Bernlochner, F U; Choi, H H F; King, G J; Kowalewski, R; Lewczuk, M J; Lueck, T; Nugent, I M; Roney, J M; Sobie, R J; Tasneem, N; Gershon, T J; Harrison, P F; Latham, T E; Band, H R; Dasu, S; Pan, Y; Prepost, R; Wu, S L

    2013-01-01

    We describe searches for B meson decays to the charmless vector-vector final states omega omega and omega phi with 471 x 10^6 B Bbar pairs produced in e+ e- annihilation at sqrt(s) = 10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction B(B0 --> omega omega) = (1.2 +- 0.3 +0.3-0.2) x 10^-6, where the first uncertainty is statistical and the second is systematic, corresponding to a significance of 4.4 standard deviations. We also determine the upper limit B(B0 --> omega phi) omega omega, and an improvement of the upper limit for the decay B0 --> omega phi.

  11. Efecto de los ácidos grasos poliinsaturados omega-3 y omega-6 sobre el riesgo de padecer cáncer de mama

    Álvarez Álvarez, Rosa Mª

    2011-01-01

    El cáncer de mama es el tipo de cáncer más frecuente en las mujeres de todo el mundo. Sin embargo, la incidencia de cáncer de mama es mucho más alta en los países desarrollados (descartando Japón) en comparación a los países no desarrollados. Por tanto, a parte de los posibles polimorfismos genéticos, existen factores de tipo ambiental relacionados con el estilo de vida y el tipo de alimentación que afectan al riesgo de padecer cáncer de mama. Existe una creciente evidencia que indica que pat...

  12. Omega-3 Supplements: An Introduction

    ... oil (which provides ALA). Algae oils are a vegetarian source of DHA. Omega-3 fatty acids are ... fish oil might increase the risk of prostate cancer. Additional research on the association of omega-3 ...

  13. The Omega spectrometer

    1972-01-01

    The Omega spectrometer which came into action during the year. An array of optical spark chambers can be seen withdrawn from the magnet aperture. In the 'igloo' above the magnet is located the Plumbicon camera system which collects information from the spark chambers.

  14. Modificación en la composición de ácidos grasos del huevo al incluir aceite de sardina y ácido linoleico conjugado en dietas para gallinas ponedoras Modulation in egg fatty acids composition when laying hens diets are supplemented with sardine oil and conjugated linoleic acid

    S Carrillo

    2012-01-01

    Full Text Available Actualmente el consumo regular de ácidos grasos omega 3 (C18:3 ALA, C20:5 EPA, C22:6 DHA y de ácido linoleico conjugado (C18:2 CLA es recomendado debido a la importancia que estos compuestos bioactivos tienen en la prevención y control de enfermedades cardiovasculares, diabetes y diferentes tipos de cáncer. El objetivo de este estudio fue determinar el efecto sobre la composición en ácidos grasos del huevo cuando la dieta de las gallinas es suplementada con aceite de sardina y CLA. 240 gallinas Bovans White fueron distribuidas aleatoriamente en cuatro tratamientos con cinco réplicas de 12 aves cada una. Los tratamientos fueron: testigo (T1 con una dieta basal, la misma que T1 más 2,5% de aceite de sardina (T2, la misma que T2 pero adicionando 1% y 2% de CLA (T3 y T4 respectivamente. El ensayo experimental tuvo una duración de cuatro semanas. Al final de este período, 50 huevos de cada tratamiento fueron tomados para realizar la determinación de ácidos grasos por cromatografía de gases. Con respecto al tratamiento testigo, los resultados mostraron un incremento en la concentración total de ácidos grasos omega 3 (1,6% vs 6,0% del total de ácidos grasos y de CLA (0,7% vs 3-5% del total de ácidos grasos en el huevo de los tratamientos T3, T4 y T5 en conjunto, y una relación n6:n3 de 11:1 vs 1.3:1 (P The regular intake of omega 3 fatty acids (C18:3 ALA, C20:5 EPA, C22:6 DHA and conjugated linoleic acid (C18:2 CLA is currently recommended due to their importance in the prevention and control of cardiovascular diseases, diabetes and several types of cancer. The aim of this study was to determine the effect of supplementing laying hens diets with sardine oil and CLA on egg fatty acid composition. 240 Bovans White hens were randomly distributed into four treatments with 5 replicates of 12 hens each one. The treatments consisted in a control diet (T1, T1 plus 2.5% of sardine oil (T2, and T2 padded with 1% and 2% of CLA (T3 and T4

  15. Measurements of $\\jpsi$ decays into $\\omega\\pio$, $\\omega\\eta$, and $\\omega\\etap$

    Ablikim, M.

    2005-01-01

    Based on $5.8 \\times 10^7 \\jpsi$ events collected with BESII at the Beijing Electron-Positron Collider (BEPC), the decay branching fractions of $\\jpsi\\to\\omega\\pio$, $\\omega\\eta$, and $\\omega\\etap$ are measured using different $\\eta$ and $\\etap$ decay modes. The results are higher than previous measurements. The $\\omega\\pio$ electromagnetic form factor is also obtained.

  16. Omega report: energy policy

    The Adam Smith Institute's Omega Project was conceived to fill a significant gap in the field of public policy research. Administrations entering office in democratic societies are often aware of the problems which they face, but lack a well-developed range of policy options. The Omega Project was designed to create and develop new policy initiatives, to research and analyze these new ideas, and to bring them forward for public discussion in ways which overcame the conventional shortcomings. The organization of the Project is described. The results are presented in sections entitled: energy supplies and policy; the gas industry; North Sea oil; the coal industry; the electricity industry; nuclear energy; renewable and alternative fuel sources; energy conservation. (U.K.)

  17. Omega-3 fiskeolie

    Lunde, Anita; Sørensen, Jan

    2009-01-01

    Rapport afgrænser sig til evidensbaserede helbredsmæssige gevinster ved et øget indtag af langkædede omega-3, som opnås ved en kost rig på fisk eller som et tilskud af fiskeolier. Der gennemføres en systematisk litteraturgennemgang, som baserer sig på et evidensniveau svarende til styrke A. Det...... betyder, at gennemgangen inkluderer metaanalyser/oversigtsartikler af enten eksperimentelle studier eller observationsstudier, endvidere indgår udvalgte større RCT, som er refereret i meta-analyserne. Sammenfattende findes på baggrund af litteraturgennemgang, at tilskud af omega-3 har effekt på...... hjertesygdom ved at nedsætte mortaliteten. Effekten er mest evident ved personer i særlig risiko for at udvikle hjerte-karsygdom, eller som sekundær/tertiær profylakse. Tilsvarende findes også ved tilskud af omega-3 en forebyggende effekt i forhold til iskæmisk apopleksi. Af mulige virkningsmekanismer viser...

  18. Preferencias y aceptabilidad de los consumidores por la carne de vacuno enriquecida en omega-3 y ácido linoleico conjugado en tres ciudades españolas

    Baba, Y.; Kallas, Z.; Pérez Juan, M.; Sañudo Astiz, Carlos; Albertí Lasalle, Pere; Insausti, K.; Realini, C.E.

    2015-01-01

    Este trabajo analiza las preferencias de los consumidores en tres ciudades españolas (Barcelona, Zaragoza y Pamplona) con el objetivo de estimar la importancia relativa de los atributos más relevantes de la carne de vacuno incluyendo su enriquecimiento con ácidos grasos no saturados como el omega-3 (n-3) y el ácido linoleico conjugado (CLA). Asimismo, se pretende estudiar el impacto de la experiencia sensorial y la información sobre las preferencias y la heterogeneidad no observada tanto del ...

  19. Assessing Metabolic Changes in Response to mTOR Inhibition in a Mantle Cell Lymphoma Xenograft Model Using AcidoCEST MRI.

    Akhenblit, Paul J; Hanke, Neale T; Gill, Alexander; Persky, Daniel O; Howison, Christine M; Pagel, Mark D; Baker, Amanda F

    2016-01-01

    AcidoCEST magnetic resonance imaging (MRI) has previously been shown to measure tumor extracellular pH (pHe) with excellent accuracy and precision. This study investigated the ability of acidoCEST MRI to monitor changes in tumor pHe in response to therapy. To perform this study, we used the Granta 519 human mantle cell lymphoma cell line, which is an aggressive B-cell malignancy that demonstrates activation of the phosphatidylinositol-3-kinase/Akt/mammalian target of rapamycin (mTOR) pathway. We performed in vitro and in vivo studies using the Granta 519 cell line to investigate the efficacy and associated changes induced by the mTOR inhibitor, everolimus (RAD001). AcidoCEST MRI studies showed a statistically significant increase in tumor pHe of 0.10 pH unit within 1 day of initiating treatment, which foreshadowed a decrease in tumor growth of the Granta 519 xenograft model. AcidoCEST MRI then measured a decrease in tumor pHe 7 days after initiating treatment, which foreshadowed a return to normal tumor growth rate. Therefore, this study is a strong example that acidoCEST MRI can be used to measure tumor pHe that may serve as a marker for therapeutic efficacy of anticancer therapies. PMID:27140422

  20. The Omega spectrometer

    1974-01-01

    The huge superconducting magnet (3 m inside coil diameter, 2 m gap, 18 kGauss) contains a large number of optical spark chambers partly surrounding a hydrogen target which is hit by the beam entering from behind. The half cylindrical aluminium hut houses eight television cameras viewing the spark chambers from the top. The big gas Cerenkov counter in front of the picture (6 m x 4 m x 3 m) which identifies fast forward particles was constructed at Saclay as a contribution of one of the Omega.

  1. l aceite de atún como fuente de ácidos grasos ω-3 en el huevo de gallina

    Vázquez-Valladolid, J. L.

    2005-06-01

    Full Text Available Fish oils are a source of polyunsaturated omega 3 fatty acids (AG ω3, mainly eicosapentaenoic acid (EPA and docosahexaenoic acid (DHA, which supply many benefits to human health. Tuna oil was used as a source of marine 3ω FA to enrich eggs by supplementing the diet of egg-laying hens with tuna oil. One hundred and twenty White Leghorn hens of 90 weeks old were allocated on three treatments with four replicates each, on a completely random design. Treatments consisted of adding 1 % and 2 % of tuna oil to the diets. The total lipids and ω3FA of the eggs were determined. The egg-laying hen dietary tuna oil supplement (1 and 2 % enriched eggs with 300 % more EPA (0.40, 1.37, 1.54 mg/g lipids and DHA (7.90, 24.67, 24.50 mg/g lipids versus the control egg . The ω6:ω3 ratio decreased ( 11.4:1, 3.8:1, 3.0:1 as dietary tuna oil increased. There were no differences (p>0.05 among treatments in productive performance and egg quality, except egg weight which decreased with the tuna oil.Los aceites de pescado son una fuente de lípidos poliinsaturados de origen animal, principalmente de los ácidos grasos omega-3 (AG ω-3, eicosapentaenoico (EPA y docosahexaenoico (DHA, beneficiosos para la salud. En este trabajo se utilizó el aceite de atún como fuente de estos nutrientes en el huevo para consumo. Se utilizaron 120 gallinas blancas Leghorn Isa-Babcock B-300 de 90 semanas de edad, distribuidas al azar en tres tratamientos, con cuatro réplicas cada uno. Los tratamientos consistieron en adicionar 1% y 2% de aceite de atún en la dieta de las gallinas ponedoras. Se determinaron los lípidos totales y AG ω-3 en el huevo, obteniéndose 300 % más de EPA (0,40, 1,37, 1,54 mg/g lípidos y DHA (7,90, 24,67, 24,50 mg/g lípidos al adicionar 1 y 2% de aceite de atún en la dieta de las aves, que en el grupo testigo. La relación ω-6: ω-3 en el huevo disminuyó con el suplemento dietético de aceite de atún (11,4:1, 3,8:1, 3:1, lo mismo ocurri

  2. Polar drive on OMEGA

    High-convergence polar-drive experiments are being conducted on OMEGA [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] using triple-picket laser pulses. The goal of OMEGA experiments is to validate modeling of oblique laser deposition, heat conduction in the presence of nonradial thermal gradients in the corona, and implosion energetics in the presence of laser-plasma interactions such as crossed-beam energy transfer. Simulated shock velocities near the equator, where the beams are obliquely incident, are within 5% of experimentally inferred values in warm plastic shells, well within the required accuracy for ignition. High, near-one-dimensional areal density is obtained in warm-plastic-shell implosions. Simulated back-lit images of the compressing core are in good agreement with measured images. Outstanding questions that will be addressed in the future relate to the role of cross-beam transfer in polar drive irradiation and increasing the energy coupled into the target by decreasing beam obliquity. (authors)

  3. Chemical Evolution in Omega Centauri

    Smith, Verne V.

    2003-01-01

    The globular cluster Omega Centauri displays evidence of a complex star formation history and peculiar internal chemical evolution, setting it apart from essentially all other globular clusters of the Milky Way. In this review we discuss the nature of the chemical evolution that has occurred within Omega Cen and attempt to construct a simple scenario to explain its chemistry.

  4. Assessment of essential fatty acid and omega 3-fatty acid status by measurement of erythrocyte 20 : 3 omega 9 (Mead acid), 22 : 5 omega 6/20 : 4 omega 6 and 22 : 5 omega 6/22 : 6 omega 3

    Smit, EN; Martini, IA; Woltil, HA; Boersma, ER; Muskiet, FAJ

    2002-01-01

    Background. Early suspicion of essential fatty acid deficiency (EFAD) or omega3-deficiency may rather focus on polyunsaturated fatty acid (PUFA) or long-chain PUFA (LCP) analyses than clinical symptoms. We determined cut-off values for biochemical EFAD, omega3-and omega3/22:6omega3 [docosahexaenoic

  5. Modeling of an immobilized lipase tubular reactor for the production of glycerol and fatty acids from oils; Modelado de un reactor tubular de lipasas inmovilizadas para la produccion de glicerol y acidos grasos a partir de aceites

    Oddone, S.; Grasselli, M.; Cuellas, A.

    2010-07-01

    Advances in the design of a bioreactor in the fats and oils industry have permitted the hydrolysis of triglycerides in mild conditions and improved productivity while avoiding the formation of unwanted byproducts. The present work develops a mathematical model that describes the hydrolytic activity of a tubular reactor with immobilized lipases for the production of glycerol and fatty acids from the oil trade. Runge Kuttas numerical method of high order has been applied, considering that there is no accumulation of the substratum in the surface of the membrane, where the enzyme is. At the same time, different equations based on the kinetic model of Michaelis Mentens and the Ping-Pong bi-bi mechanism were examined. Experimental data in discontinuous systems are the basis for the development of the quantitative mathematical model that was used to simulate the process computationally. The obtained results allow for optimizing both the operative variables and the economic aspects of industrial processes. (Author)

  6. Estabilidad oxidativa y calidad sensorial de carne de pollo enriquecida con acidos grasos n-3 proveniente de fuentes de origen vegetal y animal, protegida con vitamina E y selenio orgánico.

    GALLINGER, CLAUDIA ISABEL

    2015-01-01

    [EN] Despite people attitudes concerning healthy eating, western diets still show a low intake of n-3 polyunsaturated fatty acid (PUFA). Among Argentinean people the consumption of fish meat is relatively poor, being beef and chicken meat their main sources of protein. A viable way of increasing the consumption of n-3 PUFA is to raise the intake of products enriched with them. Chicken meat is rated in second place in the consumption of meat in Argentina. This meat, like others, is a nutrit...

  7. Resistencia a la insulina inducida por acidos grasos en células de músculo esquelético L6E9: papel de la carnitina palmitoiltransferasa I (CPT-I)

    Sebastián Muñoz, David

    2006-01-01

    La resistencia a la insulina es un estado patológico que se define como la incapacidad del organismo de responder normalmente a las acciones de la insulina. Este estado está ligado a la obesidad, al estilo sedentario de vida y es responsable en gran medida de la aparición de la diabetes de tipo 2. Aunque tradicionalmente el estudio de esta patología se había centrado en el metabolismo de carbohidratos, en las últimas décadas se ha producido un cambio hacia el estudio del metabolismo de ácidos...

  8. ÁCIDOS GRASOS EN LA DIETA DIABETES MELLITUS E INSULINO RESISTENCIA Unsaturated fatty acids intake and its relationship with insulin resistance in diabetes mellitus patients

    Clara Eugenia Pérez G; Carlos Arturo Guerrero F

    2006-01-01

    La resistencia a la insulina es característica de la diabetes mellitus tipo 2. Como parte del tratamiento se recomienda los diabéticos, sustituir en las dietas los ácidos grasos saturados y el colesterol por ácidos grasos monoinsaturados; sin que estén del todo claro los mecanismos bioquímicos que beneficiarían a los pacientes. Es probable, entre otros mecanismos, que los ácidos grasos monoin­saturados aumenten la sensibilidad a la insulina. Esta revisión analiza la relación entre el tipo de ...

  9. Biodisponibilidad de los ácidos grasos de cadena corta: mecanismos de absorción

    Ros Berruezo, Gaspar; Martínez Graciá, C.; Valencia Arques, J.A.

    2011-01-01

    Los ácidos grasos de cadena corta (AGCC) son ácidos monocarboxílicos con una cadena de uno a seis átomos de carbono saturados. Son los principales aniones del colon. Se presentan como ácidos libres en el tracto gastrointestinal de los mamíferos, siendo el producto fi nal de la digestión microbiana de los carbohidratos. Los índices de producción microbiana y de absorción son tan altos que los AGCC son la mayor fuente de energía (70-80%) en mamíferos como la vaca. La contribución...

  10. On $\\omega_3$-chains in P($\\omega_1$) mod finite

    Irrgang, Bernhard

    2008-01-01

    We prove that if there exists a simplified $(\\omega_1,2)$-morass, then there is a ccc forcing which adds an $\\omega_3$-chain in P($\\omega_1$) mod finite and a ccc forcing which adds a family of $\\omega_3$-many strongly almost disjoint functions from $\\omega_1$ to $\\omega$. The idea is to use a finite support iteration of countable forcings which is not linear but three-dimensional.

  11. Contenido de ácidos grasos trans en alimentos comercializados en la Comunidad de Madrid (España

    Santiago Moreno Alcalde

    2014-01-01

    Full Text Available Introducción: Como consecuencia de las evidencias científicas que indican que la ingesta elevada de ácidos grasos trans es un factor de riesgo de algunas enfermedades, las autoridades sanitarias recomiendan consumos de ácidos grasos trans menores del 1% de la ingesta energética total. Por otra parte, la Comisión Europea deberá presentar, antes del mes de diciembre del año 2014, un informe sobre la presencia de grasas trans en los alimentos y en la dieta de la población de la unión, por lo que este trabajo puede aportar información útil para conseguir ese objetivo. Objetivos: Conocer los contenidos de ácidos grasos trans en algunos grupos de alimentos de la Comunidad de Madrid. Métodos: Se han seleccionado y analizado 170 muestras de diferentes alimentos de consumo habitual entre niños y adolescentes, que fueron adquiridas durante el mes de febrero de 2010 en centros comerciales de la Comunidad de Madrid. Los resultados se han expresado como porcentaje de cada uno de los ácidos grasos frente al total de los que contiene el alimento. Resultados: Únicamente en 33 alimentos (un 19,4% se ha constatado la presencia de ácidos grasos trans por encima del límite de detección de la técnica (≥ 0,1 g por 100 g, encontrándose las cifras más elevadas en el grupo de los derivados lácteos, con un contenido medio de un 0,4%. Discusión/conclusiones: El contenido en ácidos grasos trans en los productos analizados puede considerarse bajo, en comparación con las cantidades que refieren diferentes autores en alimentos comercializados tanto en España como en otros países a lo largo de los últimos años. Es preciso continuar este tipo de estudios para controlar la calidad y seguridad nutricional de la ingesta de grasa por parte de la población española en general y, en particular, niños y jóvenes.

  12. The Effect of Low Omega-3/Omega-6 Ratio on Auditory Nerve Conduction in Rat Pups.

    Saeid Farahani

    2015-06-01

    Full Text Available The biological effects of omega-3 and omega-6 fatty acids are determined by their mutual interactions. This interaction extremely affects various functions. Lower consumption of omega-3 during gestation leads to various disorders, even in hearing. We aimed to assess the effect of low omega-3/omega-6 ratios on auditory nerve conduction. In this experimental study, the auditory brainstem response test was performed on 24-day-old rat (n=14. The rats were divided into case (low omega-3/omega-6 ratio during gestation and lactation and control groups. Variables such as P1, P3, and P4 absolute latency period, interpeaks (P3-P4, P1-P3, and P1-P4, and P4/P1 amplitude ratio were measured. We found an increased P4 omega-3/omega-6 ratio in the group with a low omega-3/omega-6 ratio (P0.05.  Also, no significant difference was observed between the groups with respect to the P1-P3 interpeak latency (IPL periods (P>0.05; while the P1-P4 and P3-P4 IPLs were significantly increased in the group with a low omega-3/omega-6 ratio (P<0.05. The P4/P1 amplitude ratio significantly decreased in the group with a low omega-3/omega-6 ratio (P<0.05. Results confirmed the negative effects of low omega-3/omega-6 ratio on the auditory system and hearing.

  13. Observation of chi(c1) Decays into Vector Meson Pairs phi phi, omega omega, and omega phi

    Ablikim, M.; Achasov, M. N.; An, L.; An, Q.; An, Z. H.; Bai, J. Z.; Baldini, R.; Ban, Y.; Becker, J.; Berger, N.; Bertani, M.; Bian, J. M.; Bondarenko, O.; Boyko, I.; Briere, R. A.; Bytev, V.; Cai, X.; Cao, G. F.; Cao, X. X.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, Y.; Chen, Y. B.; Cheng, H. P.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J. P.; Dedovich, D.; Deng, Z. Y.; Denysenko, I.; Destefanis, M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Duan, M. Y.; Fan, R. R.; Fang, J.; Fang, S. S.; Feng, C. Q.; Fu, C. D.; Fu, J. L.; Gao, Y.; Geng, C.; Goetzen, K.; Gong, W. X.; Greco, M.; Grishin, S.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, Y. P.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, M.; He, Z. Y.; Heng, Y. K.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, B.; Huang, G. M.; Huang, J. S.; Huang, X. T.; Huang, Y. P.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, X. B.; Ji, X. L.; Jia, L. K.; Jiang, L. L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F. F.; Kavatsyuk, M.; Komamiya, S.; Kuehn, W.; Lange, J. S.; Leung, J. K. C.; Li, Cheng; Li, Cui; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, Lei; Li, N. B.; Li, Q. J.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, X. T.; Liu, B. J.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, C. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, G. C.; Liu, H.; Liu, H. B.; Liu, H. M.; Liu, H. W.; Liu, J. P.; Liu, K.; Liu, K. Y.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, X. H.; Liu, Y. B.; Liu, Y. W.; Liu, Yong; Liu, Z. A.; Liu, Z. Q.; Loehner, H.; Lu, G. R.; Lu, H. J.; Lu, J. G.; Lu, Q. W.; Lu, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Ma, C. L.; Ma, F. C.; Ma, H. L.; Ma, Q. M.; Ma, T.; Ma, X.; Ma, X. Y.; Maggiora, M.; Malik, Q. A.; Mao, H.; Mao, Y. J.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Mitchell, R. E.; Mo, X. H.; Muchnoi, N. Yu.; Nefedov, Y.; Ning, Z.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pelizaeus, M.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Pun, C. S. J.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, X. S.; Qiu, J. F.; Rashid, K. H.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schulze, J.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, X. Y.; Sonoda, S.; Spataro, S.; Spruck, B.; Sun, D. H.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, X. D.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Tang, X. F.; Tian, H. L.; Toth, D.; Varner, G. S.; Wan, X.; Wang, B. Q.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q.; Wang, S. G.; Wang, X. L.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wei, D. H.; Wen, Q. G.; Wen, S. P.; Wiedner, U.; Wu, L. H.; Wu, N.; Wu, W.; Wu, Z.; Xiao, Z. J.; Xie, Y. G.; Xu, G. F.; Xu, G. M.; Xu, H.; Xu, Y.; Xu, Z. R.; Xu, Z. Z.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, Y. H.; Yang, H. X.; Yang, M.; Yang, T.; Yang, Y.; Yang, Y. X.; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, L.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, L.; Zhang, S. H.; Zhang, T. R.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, H. S.; Zhao, Jiawei; Zhao, Jingwei; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, X. H.; Zhao, Y. B.; Zhao, Z. G.; Zhao, Z. L.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y. H.; Zheng, Z. P.; Zhong, B.; Zhong, J.; Zhong, L.; Zhou, L.; Zhou, X. K.; Zhou, X. R.; Zhu, C.; Zhu, K.; Zhu, K. J.; Zhu, S. H.; Zhu, X. L.; Zhu, X. W.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.; Zuo, J. X.; Zweber, P.

    2011-01-01

    Using (106 +/- 4) x 10(6) psi(3686) events accumulated with the BESIII detector at the BEPCII e(+) e(-) collider, we present the first measurement of decays of chi(c1) to vector meson pairs phi phi, omega omega, and omega phi. The branching fractions are measured to be (4.4 +/- 0.3 +/- 0.5) x 10(-4)

  14. Perfiles de ácidos grasos totales y libres en embutidos crudo-curados tradicionales de Galicia

    Carballo, Javier

    2004-09-01

    Full Text Available The total and free fatty acid contents were studied in ready for consumption samples of four different varieties of traditional dry-fermented sausages made in Galicia (NW of Spain: Chorizo gallego, Chorizo de cebolla, Androlla and Botillo. No significant differences (p>0.05 were observed in the content of the different total fatty acids among the four sausage varieties. The total fatty acids profile was very similar in the four varieties: the most abundant total fatty acid was oleic (45% of total fatty acids, followed by palmitic (21%, linoleic (14%, estearic (13% and palmitoleic (2%; this profile basically coincides with those described by other authors in pork fat. The total average content of free fatty acids was 2176 mg/100 g of fat in Chorizo gallego, 5223 mg/100 g of fat in Chorizo de cebolla, 2308 mg/100 g of fat in Androlla and 183 mg/100 g of fat in Botillo. These average values in Chorizo gallego, Chorizo de cebolla and Androlla were found in the range of values described for other dry-fermented sausage varieties; the average value in Botillo was clearly lower than those decribed for other fermented sausages. In the four sausage varieties the most abundant free fatty acid was oleic, followed by linoleic, palmitic and estearic. This free fatty acid profile coincides with those described in literature for other dry-fermented sausages. The average content of each individual free fatty acid was significantly (p0.05 were observed in the individual free fatty acid content between Chorizo gallego and Androlla. Using discriminant analysis 100% of the samples of Chorizo de cebolla and Botillo were correctly classified and differentiated from their content in individual free fatty acids. However, only 50% of samples of Chorizo gallego and 25% of samples of Androlla were correctly classified.Se estudiaron los contenidos en ácidos grasos totales y libres en muestras de producto final de cuatro embutidos tradicionales gallegos: Chorizo gallego

  15. Actividad antioxidante y perfil de ácidos grasos de las semillas de jabuticaba (Myrciaria cauliflora Berg

    Jorge Neuza

    2011-08-01

    Full Text Available Este trabajo tuvo como objetivo caracterizar las semillas de jabuticaba (Myrciaria cauliflora Berg en cuanto a su composición proximal y potencial antioxidante y evaluar el perfil de ácidos grasos en el aceite extraído de las mismas. Para la obtención del extracto, las semillas deshidratadas y trituradas fueron extraídas con alcohol etílico por 30 minutos, en la proporción de 1:3 de semillas:alcohol etílico, bajo agitación continua, a temperatura ambiente. Seguidamente, la mezcla fue filtrada y el sobrenadante fue deshidratado a 40oC con la finalidad de determinar, por pesaje directo, el rendimiento en materia seca del extracto. De acuerdo con los resultados obtenidos, las semillas de jabuticaba mostraron ser una importante fuente de carbohidratos totales, además presentaron una relevante actividad antioxidante. El aceite de jabuticaba presentó porcentaje significativa de ácidos grasos poliinsaturados, con predominancia del ácido linoleico y α-linolénico, ácidos grasos esenciales.

  16. An Increase in the Omega-6/Omega-3 Fatty Acid Ratio Increases the Risk for Obesity

    Artemis P. Simopoulos

    2016-03-01

    Full Text Available In the past three decades, total fat and saturated fat intake as a percentage of total calories has continuously decreased in Western diets, while the intake of omega-6 fatty acid increased and the omega-3 fatty acid decreased, resulting in a large increase in the omega-6/omega-3 ratio from 1:1 during evolution to 20:1 today or even higher. This change in the composition of fatty acids parallels a significant increase in the prevalence of overweight and obesity. Experimental studies have suggested that omega-6 and omega-3 fatty acids elicit divergent effects on body fat gain through mechanisms of adipogenesis, browning of adipose tissue, lipid homeostasis, brain-gut-adipose tissue axis, and most importantly systemic inflammation. Prospective studies clearly show an increase in the risk of obesity as the level of omega-6 fatty acids and the omega-6/omega-3 ratio increase in red blood cell (RBC membrane phospholipids, whereas high omega-3 RBC membrane phospholipids decrease the risk of obesity. Recent studies in humans show that in addition to absolute amounts of omega-6 and omega-3 fatty acid intake, the omega-6/omega-3 ratio plays an important role in increasing the development of obesity via both AA eicosanoid metabolites and hyperactivity of the cannabinoid system, which can be reversed with increased intake of eicosapentaenoic acid (EPA and docosahexaenoic acid (DHA. A balanced omega-6/omega-3 ratio is important for health and in the prevention and management of obesity.

  17. An Increase in the Omega-6/Omega-3 Fatty Acid Ratio Increases the Risk for Obesity

    Simopoulos, Artemis P.

    2016-01-01

    In the past three decades, total fat and saturated fat intake as a percentage of total calories has continuously decreased in Western diets, while the intake of omega-6 fatty acid increased and the omega-3 fatty acid decreased, resulting in a large increase in the omega-6/omega-3 ratio from 1:1 during evolution to 20:1 today or even higher. This change in the composition of fatty acids parallels a significant increase in the prevalence of overweight and obesity. Experimental studies have suggested that omega-6 and omega-3 fatty acids elicit divergent effects on body fat gain through mechanisms of adipogenesis, browning of adipose tissue, lipid homeostasis, brain-gut-adipose tissue axis, and most importantly systemic inflammation. Prospective studies clearly show an increase in the risk of obesity as the level of omega-6 fatty acids and the omega-6/omega-3 ratio increase in red blood cell (RBC) membrane phospholipids, whereas high omega-3 RBC membrane phospholipids decrease the risk of obesity. Recent studies in humans show that in addition to absolute amounts of omega-6 and omega-3 fatty acid intake, the omega-6/omega-3 ratio plays an important role in increasing the development of obesity via both AA eicosanoid metabolites and hyperactivity of the cannabinoid system, which can be reversed with increased intake of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). A balanced omega-6/omega-3 ratio is important for health and in the prevention and management of obesity. PMID:26950145

  18. Challenges when developing omega-3 enriched foods

    Jacobsen, Charlotte

    2010-01-01

    Due to the polyunsaturated nature of omega-3 fatty acids, lipid oxidation is a major challenge when developing omega-3 enriched foods. In multiphase food systems, several factors can affect lipid oxidation and efficacy of antioxidants, added to prevent lipid oxidation. This review discusses the influence of important factors such as oil quality, delivery systems for omega-3 fatty acids, processing conditions, composition of the food matrix on lipid oxidation in different omega-3 enriched food...

  19. Ácidos grasos trans en aceites hidrogenados: implicaciones técnicas y nutricionales

    Barrera-Arellano, D.

    1993-10-01

    Full Text Available Customers are increasingly paying attention to fats and oils because they are strongly health related. Many points are still confusing about this, but certainly there is one that will soon become public concern: the presence of trans fatty acids in hydrogenated fats and their products. Natural fats and oils from vegetable origin lack this trans isomers. Even though the production of the trans isomers during hydrogenation is unavoidable it can be controlled and minimized. The presence of these components modify technical characteristics as well as introduce problems and alterations in health and nutritional aspects. High trans fatty acids values (up 62% were found in Brazilian products. A relevant effect in solid content (SFC at low temperatures was observed but no influence in the softening point. Possible nutritional and health effects related to trans fatty acids will be discussed.

    Actualmente, las grasas y aceites son alimentos observados con mucha atención por los consumidores, por su estrecha relación entre ellos y la salud. Uno de los puntos todavía confusos y que ciertamente vendrá rápidamente a tornarse de dominio público, es la presencia de ácidos grasos trans en grasas hidrogenadas y productos que las contienen. En aceites y grasas de origen vegetal estos isómeros trans están ausentes, y son producidos durante la hidrogenación, este fenómeno es inevitable, pero puede ser controlado y minimizado. La presencia de estos compuestos modifican tanto las características técnicas como también, se sospecha ocasionan problemas y alteraciones desde el punto de vista nutricional y de salud. En productos hidrogenados brasileños fueron encontrados valores elevados de ácidos trans (hasta 62%, observándose un efecto notable en el contenido de sólidos (SFC a bajas temperaturas y ninguna influencia en el punto de reblandecimiento «softening point». Posibles efectos nutricionales y de salud relacionados con ácidos grasos trans

  20. Geometric construction of bases of $H_2(\\overline\\Omega, \\partial\\Omega, \\mathbb{Z})$

    Rodríguez, Ana Alonso; Bertolazzi, Enrico; Ghiloni, Riccardo; Specogna, Ruben

    2016-01-01

    We present an efficient algorithm for the construction of a basis of $H_2(\\overline{\\Omega},\\partial\\Omega;\\mathbb Z)$ via the Poincar\\'e--Lefschetz duality theorem. Denoting by $g$ the first Betti number of $\\overline \\Omega$ the idea is to find, first $g$ different $1$-boundaries of $\\overline{\\Omega}$ with supports contained in $\\partial\\Omega$ whose homology classes in $\\mathbb R^3 \\setminus \\Omega$ form a basis of $H_1(\\mathbb R^3 \\setminus \\Omega;\\mathbb Z)$, and then to construct in $\\...

  1. The Effect of Low Omega-3/Omega-6 Ratio on Auditory Nerve Conduction in Rat Pups.

    Saeid Farahani; Masoud Motasaddi Zarandy; Gholamreza Hassanzadeh; Farzad Shidfar; Shohreh Jalaie; Vida Rahimi

    2015-01-01

    The biological effects of omega-3 and omega-6 fatty acids are determined by their mutual interactions. This interaction extremely affects various functions. Lower consumption of omega-3 during gestation leads to various disorders, even in hearing. We aimed to assess the effect of low omega-3/omega-6 ratios on auditory nerve conduction. In this experimental study, the auditory brainstem response test was performed on 24-day-old rat (n=14). The rats were divided into case (low omega-3/omega-6 r...

  2. Observation of an Excited Charm Baryon OmegaC* Decaying to OmegaC0 Gamma

    Aubert, B; Boutigny, D; Couderc, F; Karyotakis, Yu; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A; Graugès-Pous, E; Palano, A; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S; Eigen, G; Ofte, I; Stugu, B; Abrams, G S; Battaglia, M; Brown, D N; Button-Shafer, J; Cahn, R N; Charles, E; Gill, M S; Groysman, Y; Jacobsen, R G; Kadyk, J A; Kerth, L T; Kolomensky, Yu G; Kukartsev, G; Lynch, G; Mir, L M; Orimoto, T J; Pripstein, M; Roe, N A; Ronan, M T; Wenzel, W A; Del, P; Amo Sanchez; Barrett, M; Ford, K E; Hart, A J; Harrison, T J; Hawkes, C M; Watson, A T; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Peters, K; Schröder, T; Steinke, M; Boyd, J T; Burke, J P; Cottingham, W N; Walker, D; Asgeirsson, D J; Çuhadar-Dönszelmann, T; Fulsom, B G; Hearty, C; Knecht, N S; Mattison, T S; McKenna, J A; Khan, A; Kyberd, P; Saleem, M; Sherwood, D J; Teodorescu, L; Blinov, V E; Bukin, A D; Druzhinin, V P; Golubev, V B; Onuchin, A P; Serednyakov, S I; Skovpen, Yu I; Solodov, E P; Todyshev, K Yu; Bondioli, M; Bruinsma, M; Chao, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, A J; Lund, P; Mandelkern, M A; Mommsen, R K; Röthel, W; Stoker, D P; Abachi, S; Buchanan, C; Foulkes, S D; Gary, J W; Long, O; Shen, B C; Wang, K; Zhang, L; Hadavand, H K; Hill, E J; Paar, H P; Rahatlou, S; Sharma, V; Berryhill, J W; Campagnari, C; Cunha, A; Dahmes, B; Hong, T M; Kovalskyi, D; Richman, J D; Beck, T W; Eisner, A M; Flacco, C J; Heusch, C A; Kroseberg, J; Lockman, W S; Nesom, G; Schalk, T; Schumm, B A; Seiden, A; Spradlin, P; Williams, D C; Wilson, M G; Albert, J; Chen, E; Dvoretskii, A; Fang, F; Hitlin, D G; Narsky, I; Piatenko, T; Porter, F C; Ryd, A; Mancinelli, G; Meadows, B T; Mishra, K; Sokoloff, M D; Blanc, F; Bloom, P C; Chen, S; Ford, W T; Hirschauer, J F; Kreisel, A; Nagel, M; Nauenberg, U; Olivas, A; Ruddick, W O; Smith, J G; Ulmer, K A; Wagner, S R; Zhang, J; Chen, A; Eckhart, E A; Soffer, A; Toki, W H; Wilson, R J; Winklmeier, F; Zeng, Q; Altenburg, D D; Feltresi, E; Hauke, A; Jasper, H; Merkel, J; Petzold, A; Spaan, B; Brandt, T; Klose, V; Lacker, H M; Mader, W F; Nogowski, R; Schubert, J; Schubert, K R; Schwierz, R; Sundermann, J E; Volk, A; Bernard, D; Bonneaud, G R; Latour, E; Thiebaux, C; Verderi, M; Clark, P J; Gradl, W; Muheim, F; Playfer, S; Robertson, A I; Xie, Y; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Luppi, E; Negrini, M; Petrella, A; Piemontese, L; Prencipe, E; Anulli, F; Baldini-Ferroli, R; Calcaterra, A; De Sangro, R; Finocchiaro, G; Pacetti, S; Patteri, P; Peruzzi, I M; Piccolo, M; Rama, M; Zallo, A; Buzzo, A; Contri, R; Lo, M; Lo Vetere, M; Macri, M M; Monge, M R; Passaggio, S; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Brandenburg, G; Chaisanguanthum, K S; Morii, M; Wu, J; Dubitzky, R S; Marks, J; Schenk, S; Uwer, U; Bhimji, W; Bowerman, D A; Dauncey, P D; Egede, U; Flack, R L; Nash, J A; Nikolich, M B; Panduro-Vazquez, W; Bard, D J; Behera, P K; Chai, X; Charles, M J; Mallik, U; Meyer, N T; Ziegler, V; Cochran, J; Crawley, H B; Dong, L; Eyges, V; Meyer, W T; Prell, S; Rosenberg, E I; Rubin, A E; Gritsan, A V; Denig, A G; Fritsch, M; Schott, G; Arnaud, N; Davier, M; Grosdidier, G; Höcker, A; Le Diberder, F R; Lepeltier, V; Lutz, A M; Oyanguren, A; Pruvot, S; Rodier, S; Roudeau, P; Schune, M H; Stocchi, A; Wang, W F; Wormser, G; Cheng, C H; Lange, D J; Wright, D M; Chavez, C A; Forster, I J; Fry, J R; Gabathuler, E; Gamet, R; George, K A; Hutchcroft, D E; Payne, D J; Schofield, K C; Touramanis, C; Bevan, A J; Di Lodovico, F; Menges, W; Sacco, R; Cowan, G; Flächer, H U; Hopkins, D A; Jackson, P S; McMahon, T R; Ricciardi, S; Salvatore, F; Wren, A C; Davis, C L; Allison, J; Barlow, N R; Barlow, R J; Chia, Y M; Edgar, C L; Lafferty, G D; Naisbit, M T; Williams, J C; Yi, J I; Chen, C; Hulsbergen, W D; Jawahery, A; Lae, C K; Roberts, D A; Simi, G; Blaylock, G; Dallapiccola, C; Hertzbach, S S; Li, X; Moore, T B; Saremi, S; Stängle, H; Cowan, R; Sciolla, G; Sekula, S J; Spitznagel, M; Taylor, F; Yamamoto, R K; Kim, H; Mclachlin, S E; Patel, P M; Robertson, S H; Lazzaro, A; Lombardo, V; Palombo, F; Bauer, J M; Cremaldi, L; Eschenburg, V; Godang, R; Kroeger, R; Sanders, D A; Summers, D J; Zhao, H W; Brunet, S; Côté, D; Simard, M; Taras, P; Viaud, F B; Nicholson, H; Cavallo, N; De Nardo, Gallieno; Fabozzi, F; Gatto, C; Lista, L; Monorchio, D; Paolucci, P; Piccolo, D; Sciacca, C; Baak, M A; Raven, G; Snoek, H L; Jessop, C P; LoSecco, J M; Allmendinger, T; Benelli, G; Corwin, L A; Gan, K K; Honscheid, K; Hufnagel, D; Jackson, P D; Kagan, H; Kass, R; Rahimi, A M; Regensburger, J J; Ter-Antonian, R; Wong, Q K; Blount, N L; Brau, J E; Frey, R; Igonkina, O; Kolb, J A; Lu, M; Rahmat, R; Sinev, N B; Strom, D; Strube, J; Torrence, E; Gaz, A; Margoni, M; Morandin, M; Pompili, A; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Voci, C; Benayoun, M; Briand, H; Chauveau, J; David, P; Del, L; Buono; La Vaissière, C de; Hamon, O; Hartfiel, B L; Leruste, P; Malcles, J; Ocariz, J; Roos, L; Therin, G; Gladney, L; Biasini, M; Covarelli, R; Angelini, C; Batignani, G; Bettarini, S; Bucci, F; Calderini, G; Carpinelli, M; Cenci, R; Forti, F; Giorgi, M A; Lusiani, A; Marchiori, G; Mazur, M A; Morganti, M; Neri, N; Paoloni, E; Rizzo, G; Walsh, J J; Haire, M; Judd, D; Wagoner, D E; Biesiada, J; Danielson, N; Elmer, P; Lau, Y P; Lü, C; Olsen, J; Smith, A J S; Telnov, A V; Bellini, F; Cavoto, G; D'Orazio, A; Del Re, D; Di Marco, E; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Li Gioi, L; Mazzoni, M A; Morganti, S; Piredda, G; Polci, F; Safai-Tehrani, F; Voena, C; Ebert, M; Schröder, H; Waldi, R; Adye, T; De Groot, N; Franek, B; Olaiya, E O; Wilson, F F; Aleksan, R; Emery, S; Gaidot, A; Ganzhur, S F; Hamel de Monchenault, G; Kozanecki, Witold; Legendre, M; Vasseur, G; Yéche, C; Zito, M; Chen, X R; Liu, H; Park, W; Purohit, M V; Wilson, J R; Allen, M T; Aston, D; Bartoldus, R; Bechtle, P; Berger, N; Claus, R; Coleman, J P; Convery, M R; Cristinziani, M; Dingfelder, J C; Dorfan, J; Dubois-Felsmann, G P; Dujmic, D; Dunwoodie, W M; Field, R C; Glanzman, T; Gowdy, S J; Graham, M T; Grenier, P; Halyo, V; Hast, C; Hrynóva, T; Innes, W R; Kelsey, M H; Kim, P; Leith, D W G S; Li, S; Luitz, S; Lüth, V; Lynch, H L; MacFarlane, D B; Marsiske, H; Messner, R; Müller, D R; O'Grady, C P; Ozcan, V E; Perazzo, A; Perl, M; Pulliam, T; Ratcliff, B N; Roodman, A; Salnikov, A A; Schindler, R H; Schwiening, J; Snyder, A; Stelzer, J; Su, D; Sullivan, M K; Suzuki, K; Swain, S K; Thompson, J M; Vavra, J; Van Bakel, N; Weaver, M; Weinstein, A J R; Wisniewski, W J; Wittgen, M; Wright, D H; Yarritu, A K; Yi, K; Young, C C; Burchat, P R; Edwards, A J; Majewski, S A; Petersen, B A; Roat, C; Wilden, L; Ahmed, S; Alam, M S; Bula, R; Ernst, J A; Jain, V; Pan, B; Saeed, M A; Wappler, F R; Zain, S B; Bugg, W; Krishnamurthy, M; Spanier, S M; Eckmann, R; Ritchie, J L; Satpathy, A; Schilling, C J; Schwitters, R F; Izen, J M; Lou, X C; Ye, S; Bianchi, F; Gallo, F; Gamba, D; Bomben, M; Bosisio, L; Cartaro, C; Cossutti, F; Della Ricca, G; Dittongo, S; Lanceri, L; Vitale, L; Azzolini, V; Lopez-March, N; Martínez-Vidal, F; Banerjee, Sw; Bhuyan, B; Brown, C M; Fortin, D; Hamano, K; Kowalewski, R V; Nugent, I M; Roney, J M; Sobie, R J; Back, J J; Harrison, P F; Latham, T E; Mohanty, G B; Pappagallo, M; Band, H R; Chen, X; Cheng, B; Dasu, S; Datta, M; Flood, K T; Hollar, J J; Kutter, P E; Mellado, B; Mihályi, A; Pan, Y; Pierini, M; Prepost, R; Wu, S L; Yu, Z; Neal, H; al, et

    2006-01-01

    We report the first observation of an excited singly-charm baryon OmegaC* (css) in the radiative decay OmegaC0 Gamma, where the OmegaC0 baryon is reconstructed in the decays to the final states Omega-pi+, Omega-pi+pi0, Omega-pi+pi-pi+, and Cascade-K-pi+pi+. This analysis is performed using a dataset of 230.7 fb$-1} collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. The mass difference between the OmegaC* and the OmegaC0 baryons is measured to be 70.8 +/- 1.0 (stat) +/- 1.1 (syst) MeV/c2. We also measure the ratio of inclusive production cross sections of OmegaC* and OmegaC0 in e+e- annihilation.

  3. Exosat observations of omega centauri

    We have undertaken an EXOSAT study of Omega Cen to tackle the two aspects of its X-ray emission revealed by the Einstein satellite: i) diffuse emission which could be due to the interaction between the gas lost by the evolving cluster stars and the interstellar medium; ii) dim point sources, the major part of them being white-dwarf binaries

  4. Supervivencia a largo plazo de los injertos grasos Long-term survival with fat grafting

    J. Planas

    2006-03-01

    Full Text Available Presentamos varios casos de pérdida de volumen de diferentes etiologías y en distintas regiones corporales y faciales tratadas mediante injertos de tejido graso autólogo según la técnica de lipoestructura. En ningún caso se realizó sobrecorrección del defecto en ningún caso. La evolución con un seguimiento máximo de 7 años y mínimo de 1 año no mostró disminución del volumen obtenido en el acto quirúrgico en la gran mayoría de los casos. Debido a los resultados obtenidos creemos que el injerto de grasa autólogo es el método de elección para restaurar volúmenes con fines estéticos o reconstructivos.Volume loss in several facial and body areas was treated by means of autologous fatty tissue grafts with lipostructure technique. There were no cases of overcorrection. The patients’ course, with a maximum follow-up of 7 years and a minimum of 1 year did not evidence any loss of the surgically restored tissue volume in the majority of cases. The above results suggest that autologous fat grafts are the method of choice to restore volume for both cosmetic and reconstructive purposes.

  5. Evaluation of the therapeutic effect of Nigella sativa crude oil and its blend with omega-3 fatty acid-rich oils in a modified hepatorenal syndrome model in rats

    Al-Okbi, S. Y.

    2015-12-01

    Full Text Available In the present study, the hepato and reno-protective effect of Nigella sativa crude oil and its binary blend with omega-3 fatty acid-rich oils (fish and flaxseed oils was studied in a modified hepatorenal syndrome model (MHRS in rats. MHRS was induced through feeding a high fructose diet followed by an intraperitoneal injection of galactosamine hydrochloride. Nigella oil and its different blends were given as a daily oral dose to MHRS rats. Two control groups of MHRS and normal healthy rats were run. Different biochemical and nutritional parameters were assessed. The induction of MHRS produced liver and kidney dysfunction, and elevated oxidative stress, an inflammatory biomarker, endothelin 1, and plasma cholesterol. Reduced plasma high density lipoprotein cholesterol, albumin and Ca and elevated urinary N-acetyl-β-D-Glucosaminidase and liver fats were noticed. The administration of Nigella crude oil that originally had 0.2% total omega-3 fatty acids or its blend with fish oil (17.9% omega-3 or flaxseed oil (42.1% omega-3 significantly improved all biochemical parameters of MHRS. There was no significant difference in the biochemical parameters among the different oil treated groups regardless of the omega-3 fatty acid content. This may point out to the potential profound effect of the volatile oil fraction of Nigella crude oil which may compensates for its low omega-3 content.En el presente estudio, el efecto hepato- y reno-protector de aceites crudos de Nigella sativa y su mezcla binaria con aceites ricos en ácidos grasos omega-3 (pescado y aceites de linaza fue estudiado en un modelo modificado de síndrome hepatorenal (MHRS en ratas. MHRS fue inducido a través de la alimentación de una dieta alta en fructosa seguido de la inyección intraperitoneal de clorhidrato de galactosamina. Diferentes aceites fueron suministrados como dosis oral diaria a ratas con MHRS. Se realizaron dos grupos de control de MHRS y ratas sanas normales. Se

  6. Study of \\Omega_c^0 and \\Omega_c^{*0} Baryons at Belle

    Solovieva, E.; Chistov, R.; Collaboration, for the Belle

    2008-01-01

    We report results from a study of the charmed double strange baryons \\Omega_c^0 and \\Omega_c^{*0} at Belle. The \\Omega_c^0 is reconstructed using the \\Omega_c^0 --> \\Omega^- \\pi^+ decay mode, and its mass is measured to be (2693.6 \\pm 0.3 {+1.8 \\atop -1.5}) MeV/c^2. The \\Omega_c^{*0} baryon is reconstructed in the \\Omega_c^0 \\gamma mode. The mass difference M_{\\Omega_c^{*0}} - M_{\\Omega_c^0} is measured to be (70.7 \\pm 0.9 {+0.1 \\atop -0.9}) MeV/c^2. The analysis is performed using 673 fb^{-1...

  7. Composición en ácidos grasos de los aceites de semillas de especies mediterráneas

    Gamisans, J.

    1994-06-01

    Full Text Available In the context of research into the lipids of higher plant, the fatty acid composition of eleven species is reported. These species belong to nine families, and most of them are common in the Mediterranean flora.
    Oils from some plants (Arctium tomentosum, Hypericum perforatum, Linaria vulgaris. Pulicaria dysenterica, Smilax áspera were partially hydrolyzed, and contained free fatty acids. Arctium tomentosum seed oil and, to a lesser extent, Smilax áspera seed oil, showed a trans absorption band in their IR spectra. Small quantities of waxes were present in Pulicaria dysenterica and Silybum marianum seed oil.
    The fatty acid composition of the oils from these plants approaches levels found in food oils as well as industrial oils. Three species showed high levels of their predominant fatty acid: Alliaria petiolata (erucic acid, 41.5%, Linaria vulgaris and Pulicaria dysenterica (linoleic acid, 70 and 72% respectively. In the seed oil of Arctium tomentosum four fatty acids were not identified: one of them could be 3(t, 9(c, 12(c- octadecatrienoic acid. But the most complex composition was that of Atriplex hortensis oil, which contained thirty three fatty acids, of which fifteen were unknown.

    En el marco de investigaciones sobre los lípidos de las plantas superiores, se presenta la composición en ácidos grasos de once especies. Estas especies pertenecen a nueve familias diferentes y la mayoría son frecuentes en la flora mediterránea.
    Numerosos aceites (Arctium tomentosum, Hypericum perforatum,Linaria vulgaris, Pulicaria dysenterica y Smilax áspera contienen glicéridos parciales y ácidos grasos libres. El aceite de Arctium tomentosum, y en menor grado, el de Smilax áspera muestran una banda espectral trans en espectrometría IR. En los aceites de Pulicaria dysenterica y de Silybum marianum peque

  8. Evaluación del perfil de ácidos grasos de carne de vacuno mediante espectroscopia MIR

    Beruete Jordana, Edurne

    2015-01-01

    El objetivo de este trabajo de fin de carrera es la evaluación del perfil de ácidos grasos de la carne de vacuno, con especial atención a los de interés nutricional (ácido linoleico conjugado, CLA por sus siglas en inglés, y lino) en carne y grasa intramuscular de ternero frisón mediante espectroscopia de infrarrojo medio (MIR por sus siglas en inglés). Para la realización de este trabajo se han empleado muestras de 24 terneros frisones. Estas muestras se encuentras dividida...

  9. Desarrollo de alimentos tipo snack de bajo contenido graso a partir de discos de manzana verde

    Tavera Quiroz, María José

    2015-01-01

    Esta investigación se basó en el desarrollo de productos tipo snack bajos en grasa a partir de manzana verde Granny Smith (Malus domestica). Se desarrollaron snacks a partir de manzanas verdes estudiando diferentes alternativas de cocción (fritado, horneado o su combinación) con el objetivo de obtener productos con menor contenido graso que los tradicionales pero con las propiedades que los consumidores valoran en los mismos, como el color y la textura crocante. Para ello se analizó el efe...

  10. Respuesta ovulatoria, estado de desarrollo y calidad de embriones de ovejas Pelibuey superovuladas suplementadas con ácidos grasos poliinsaturados

    José Herrera-Camacho; J. Ricardo Aké-López; Juan Carlos Ku-Vera; Williams, Gary L.; Jorge Alfredo Quintal-Franco

    2008-01-01

    Se evaluó el efecto de ácidos grasos poliinsaturados en la dieta, sobre número de cuerpos lúteos, células y embriones totales, estado de desarrollo y calidad morfológica de embriones recuperados de ovejas superovuladas. Veintiséis (26) ovejas Pelibuey se distribuyeron aleatoriamente en un grupo testigo que recibió una dieta a base de pasto y concentrado (SA; n=13) y un grupo experimental al que se le adicionó, en el concentrado, 4 % de aceite de maíz (AM; n=13) del total de la materia seca de...

  11. Measurement of exclusive $\\omega$ electroproduction at HERA

    Breitweg, J; Derrick, Malcolm; Krakauer, D A; Magill, S; Musgrave, B; Pellegrino, A; Repond, J; Stanek, R; Yoshida, R; Mattingly, M C K; Abbiendi, G; Anselmo, F; Antonioli, P; Bari, G; Basile, M; Bellagamba, L; Boscherini, D; Bruni, A; Bruni, G; Cara Romeo, G; Castellini, G; Cifarelli, Luisa; Cindolo, F; Contin, A; Coppola, N; Corradi, M; De Pasquale, S; Giusti, P; Iacobucci, G; Laurenti, G; Levi, G; Margotti, A; Massam, Thomas; Nania, R; Palmonari, F; Pesci, A; Polini, A; Sartorelli, G; Zamora-Garcia, Yu E; Zichichi, A; Amelung, C; Bornheim, A; Brock, I; Coboken, K; Crittenden, James Arthur; Deffner, R; Hartmann, H; Heinloth, K; Hilger, E; Irrgang, P; Jakob, H P; Kappes, A; Katz, U F; Kerger, R; Paul, E; Rautenberg, J; Schnurbusch, H; Stifutkin, A; Tandler, J; Voss, K C; Weber, A; Wieber, H; Bailey, D S; Barret, O; Brook, N H; Foster, B; Heath, G P; Heath, H F; McFall, J D; Rodrigues, E; Scott, J; Tapper, R J; Capua, M; Mastroberardino, A; Schioppa, M; Susinno, G; Jeoung, H Y; Kim, J Y; Lee, J H; Lim, I T; Ma, K J; Pac, M Y; Caldwell, A; Liu, W; Liu, X; Mellado, B; Paganis, S; Sampson, S; Schmidke, W B; Sciulli, F; Chwastowski, J; Eskreys, Andrzej; Figiel, J; Klimek, K H; Olkiewicz, K; Piotrzkowski, K; Przybycien, M B; Stopa, P; Zawiejski, L; Bednarek, B; Jelen, K; Kisielewska, D; Kowal, A M; Kowalski, T; Rulikowska-Zarebska, E; Suszycki, L; Szuba, D; Kotanski, Andrzej; Bauerdick, L A T; Behrens, U; Bienlein, J K; Borras, K; Dannheim, D; Desler, K; Drews, G; Fox-Murphy, A; Fricke, U; Göbel, F; Goers, S; Göttlicher, P; Graciani, R; Haas, T; Hain, W; Hartner, G F; Hasell, D; Hebbel, K; Kasemann, M; Koch, W; Kötz, U; Kowalski, H; Lindemann, L; Löhr, B; Mankel, R; Martínez, M; Milite, M; Moritz, M; Notz, D; Pelucchi, F; Petrucci, M C; Rohde, M; Savin, A A; Schneekloth, U; Selonke, F; Sievers, M; Stonjek, S; Wolf, G; Wollmer, U; Youngman, C; Zeuner, W; Coldewey, C; López-Duran-Viani, A; Meyer, A; Schlenstedt, S; Straub, P B; Barbagli, G; Gallo, E; Pelfer, P G; Maccarrone, G D; Votano, L; Bamberger, Andreas; Benen, A; Eisenhardt, S; Markun, P; Raach, H; Wölfle, S; Bussey, Peter J; Bell, M; Doyle, A T; Lee, S W; Lupi, A; MacDonald, N; McCance, G J; Saxon, D H; Sinclair, L E; Skillicorn, Ian O; Waugh, R; Bohnet, I; Gendner, N; Holm, U; Meyer-Larsen, A; Salehi, H; Wick, K; Garfagnini, A; Gialas, I; Gladilin, L K; Kcira, D; Klanner, Robert; Lohrmann, E; Poelz, G; Zetsche, F; Goncalo, R; Long, K R; Miller, D B; Tapper, A D; Walker, R; Mallik, U; Cloth, P; Filges, D; Ishii, T; Kuze, M; Nagano, K; Tokushuku, K; Yamada, S; Yamazaki, Y; Ahn, S H; Lee, S B; Park, S K; Lim, H; Park, I H; Son, D; Barreiro, F; García, G; Glasman, C; González, O; Labarga, L; Del Peso, J; Redondo, I; Terron, J; Barbi, M S; Corriveau, F; Hanna, D S; Ochs, A; Padhi, S; Stairs, D G; Wing, M; Tsurugai, T; Antonov, A; Bashkirov, V; Danilov, M V; Dolgoshein, B A; Gladkov, D; Sosnovtsev, V V; Suchkov, S; Dementev, R K; Ermolov, P F; Golubkov, Yu A; Katkov, I I; Khein, L A; Korotkova, N A; Korzhavina, I A; Kuzmin, V A; Lukina, O Yu; Proskuryakov, A S; Sheheglova, L M; Solomin, A N; Vlasov, N N; Zotkin, S A; Bokel, C; Botje, M; Brümmer, N; Engelen, J; Grijpink, S; Koffeman, E; Kooijman, P M; Schagen, S; Van Sighem, A; Tassi, E; Tiecke, H G; Tuning, N; Velthuis, J J; Vossebeld, Joost Herman; Wiggers, L; De Wolf, E; Bylsma, B; Durkin, L S; Gilmore, J; Ginsburg, C M; Kim, C L; Ling, T Y; Boogert, S; Cooper-Sarkar, A M; Devenish, R C E; Grosse-Knetter, J; Matsushita, T; Ruske, O; Sutton, M R; Walczak, R; Bertolin, A; Brugnera, R; Carlin, R; Dal Corso, F; Dosselli, U; Dusini, S; Limentani, S; Morandin, M; Posocco, M; Stanco, L; Stroili, R; Turcato, M; Voci, C; Adamczyk, L; Iannotti, L; Oh, B Y; Okrasinski, J R; Saull, P R B; Toothacker, W S; Whitmore, J J; Iga, Y; D'Agostini, Giulio; Marini, G; Nigro, A; Cormack, C; Hart, J C; McCubbin, N A; Shah, T P; Epperson, D E; Heusch, C A; Sadrozinski, H F W; Seiden, A; Wichmann, R; Williams, D C; Pavel, N; Abramowicz, H; Dagan, S; Kananov, S; Kreisel, A; Levy, A; Abe, T; Fusayasu, T; Umemori, K; Yamashita, T; Hamatsu, R; Hirose, T; Inuzuka, M; Kitamura, S; Nishimura, T; Arneodo, M; Cartiglia, N; Cirio, R; Costa, M; Ferrero, M I; Maselli, S; Monaco, V; Peroni, C; Ruspa, M; Sacchi, R; Solano, A; Staiano, A; Dardo, M; Bailey, D C; Fagerstroem, C P; Galea, R; Koop, T; Levman, G M; Martin, J F; Orr, R S; Polenz, S; Sabetfakhri, A; Simmons, D; Butterworth, J M; Catterall, C D; Hayes, M E; Heaphy, E A; Jones, T W; Lane, J B; West, B J; Ciborowski, J; Ciesielski, R; Grzelak, G; Nowak, R J; Pawlak, J M; Pawlak, R; Smalska, B; Tymieniecka, T; Wróblewski, A K; Zakrzewski, J A; Zarnecki, A F; Adamus, M; Gadaj, T; Deppe, O; Eisenberg, Y; Hochman, D; Karshon, U; Badgett, W F; Chapin, D; Cross, R; Foudas, C; Mattingly, S E K; Reeder, D D; Smith, W H; Vaiciulis, A W; Wildschek, T; Wodarczyk, M; Deshpande, A A; Dhawan, S K; Hughes, V W; Bhadra, S; Cole, J E; Frisken, W R; Hall-Wilton, R; Khakzad, M; Menary, S R

    2001-01-01

    The exclusive electroproduction of omega mesons, ep -> e omega p, has been studied in the kinematic range 3 pi^+pi^-pi^0. The exclusive (ep -> e omega p) cross section in the above kinematic region is 0.108 +- 0.014(stat.) +- 0.026(syst.) nb. The reaction ep -> e phi p, phi -> pi^+pi^-pi^0, has also been measured. The cross sections, as well as the cross-section ratios omega/rho and omega/phi, are presented as a function of W and Q^2. Thus, for the first time, the properties of omega electroproduction can be compared to those of rho^0, phi and J/psi electroproduction at high W.

  12. FY15 LLNL OMEGA Experimental Programs

    Heeter, R. F. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Baker, K. L. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Barrios, M. A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Beckwith, M. A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Casey, D. T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Celliers, P. M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Chen, H. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Coppari, F. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Fournier, K. B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Fratanduono, D. E. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Frenje, J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Huntington, C. M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Kraus, R. G. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lazicki, A. E. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Martinez, D. A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); McNaney, J. M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Millot, M. A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Pak, A. E. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Park, H. S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Ping, Y. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Pollock, B. B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Smith, R. F. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Wehrenberg, C. E. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Widmann, K. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Collins, G. W. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Landen, O. L. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Wan, A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Hsing, W. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-12-04

    In FY15, LLNL’s High-Energy-Density Physics (HED) and Indirect Drive Inertial Confinement Fusion (ICF-ID) programs conducted several campaigns on the OMEGA laser system and on the EP laser system, as well as campaigns that used the OMEGA and EP beams jointly. Overall these LLNL programs led 468 target shots in FY15, with 315 shots using just the OMEGA laser system, 145 shots using just the EP laser system, and 8 Joint shots using Omega and EP together. Approximately 25% of the total number of shots (56 OMEGA shots and 67 EP shots, including the 8 Joint shots) supported the Indirect Drive Inertial Confinement Fusion Campaign (ICF-ID). The remaining 75% (267 OMEGA shots and 86 EP shots) were dedicated to experiments for High-Energy-Density Physics (HED). Highlights of the various HED and ICF campaigns are summarized in the following reports.

  13. Statistical evaluation of the observational information on $\\Omega_m$ and $\\Omega_\\Lambda$

    Harun-al-Rashid, S M

    2001-01-01

    We undertake a critical evaluation of recent observational information on $\\Omega_m$ and $\\Omega_\\Lambda$ in order to identify possible sources of systematic errors and effects of simplified statistical analyses. We combine observations for which the results have been published in the form of likelihood contours in the $\\Omega_m ,\\Omega_\\Lambda$ plane. We approximate the contours by fifth order polynomials, and we then use the maximum likelihood method to obtain joint likelihood contours for the combined data. In the choice of statistical merits we aim at minimum loss of information rather than at minimum variance. We find that $\\Omega_0 = \\Omega_m + \\Omega_\\Lambda = 0.99\\pm 0.04 \\pm 0.03$, where the first error is mainly statistical and the second error is systematical. In a flat Universe we find $\\Omega_m^{flat} = 0.31 \\pm 0.04 \\pm 0.04$.

  14. Balancing omega-6 and omega-3 fatty acids in ready-to-use therapeutic foods (RUTF)

    Brenna, J Thomas; Akomo, Peter; Bahwere, Paluku;

    2015-01-01

    Ready-to-use therapeutic foods (RUTFs) are a key component of a life-saving treatment for young children who present with uncomplicated severe acute malnutrition in resource limited settings. Increasing recognition of the role of balanced dietary omega-6 and omega-3 polyunsaturated fatty acids...... with altered PUFA content and looked at the effects on circulating omega-3 docosahexaenoic acid (DHA) status as a measure of overall omega-3 status. Supplemental oral administration of omega-3 DHA or reduction of RUTF omega-6 linoleic acid using high oleic peanuts improved DHA status, whereas...... increasing omega-3 alpha-linolenic acid in RUTF did not. The results of these two small studies are consistent with well-established effects in animal studies and highlight the need for basic and operational research to improve fat composition in support of omega-3-specific development in young children as...

  15. $\\Omega\\Omega$ interaction from 2+1 flavor lattice QCD

    Yamada, Masanori; Aoki, Sinya; Doi, Takumi; Hatsuda, Tetsuo; Ikeda, Yoichi; Inoue, Takashi; Ishii, Noriyoshi; Murano, Keiko; Nemura, Hidekatsu

    2015-01-01

    We investigate the interaction between $\\Omega$ baryons in the $^1S_0$ channel from 2+1 flavor lattice QCD simulations. On the basis of the HAL QCD method, the $\\Omega\\Omega$ potential is extracted from the Nambu-Bethe-Salpeter wave function calculated on the lattice by using the PACS-CS gauge configurations with the lattice spacing $a\\simeq 0.09$ fm, the lattice volume $L\\simeq 2.9$ fm and the quark masses corresponding to $m_\\pi \\simeq 700$ MeV and $m_\\Omega \\simeq 1970$ MeV. The $\\Omega\\Omega$ potential has a repulsive core at short distance and an attractive well at intermediate distance. Accordingly, the phase shift obtained from the potential shows moderate attraction at low energies. Our data indicate that the $\\Omega\\Omega$ system with the present quark masses may appear close to the unitary limit where the scattering length diverges.

  16. Omega-3s in food emulsions

    Jacobsen, Charlotte

    2008-01-01

    There is an increasing interest in the use of healthy long chain omega-3 oils in foods. Incorporation of omega-3 oils into foods decreases their oxidative stability and therefore precautions need to be taken to avoid lipid oxidation. This review summarises the major factors to take into considera...... consideration when developing food emulsions enriched with omega-3 oils and examples on how oxidation can be reduced in products such as mayonnaise, spreads, milk, yoghurt are also given....

  17. Omega-3s in food emulsions

    Jacobsen, Charlotte

    2008-01-01

    There is an increasing interest in the use of healthy long chain omega-3 oils in foods. Incorporation of omega-3 oils into foods decreases their oxidative stability and therefore precautions need to be taken to avoid lipid oxidation. This review summarises the major factors to take into...... consideration when developing food emulsions enriched with omega-3 oils and examples on how oxidation can be reduced in products such as mayonnaise, spreads, milk, yoghurt are also given....

  18. Motivational factors for consuming omega-3 PUFAs

    Krutulyte, Rasa; Grunert, Klaus G.; Scholderer, Joachim;

    2008-01-01

    foods. This paper presents the results of a qualitative pilot study that aimed to explore Danish consumers' motives for choosing omega-3/fish oil enriched products. The Health Action Process Approach (HAPA) was applied as a theoretical framework to understand the process by which people choose healthy...... choice of omega-3/fish oil, whereas perception of omega-3 as an ingredient in selected foods does indeed influence consumers' choice of carrier-ingredient combinations....

  19. Using Caenorhabditis elegans to Uncover Conserved Functions of Omega-3 and Omega-6 Fatty Acids

    Jennifer L. Watts

    2016-01-01

    The nematode Caenorhabditis elegans is a powerful model organism to study functions of polyunsaturated fatty acids. The ability to alter fatty acid composition with genetic manipulation and dietary supplementation permits the dissection of the roles of omega-3 and omega-6 fatty acids in many biological process including reproduction, aging and neurobiology. Studies in C. elegans to date have mostly identified overlapping functions of 20-carbon omega-6 and omega-3 fatty acids in reproduction a...

  20. Challenges when developing omega-3 enriched foods

    Jacobsen, Charlotte

    2010-01-01

    Due to the polyunsaturated nature of omega-3 fatty acids, lipid oxidation is a major challenge when developing omega-3 enriched foods. In multiphase food systems, several factors can affect lipid oxidation and efficacy of antioxidants, added to prevent lipid oxidation. This review discusses the...... influence of important factors such as oil quality, delivery systems for omega-3 fatty acids, processing conditions, composition of the food matrix on lipid oxidation in different omega-3 enriched foods (milk, yoghurt, mayonnaise and mayonnaise-based salads, dressing, energy bar and fish paté). Moreover...

  1. Integration of Omega and satellite navigation systems

    Schlachta, Henry B.

    An extensive series of laboratory tests and flight trials has established that the hybrid Omega/VLF/GPS system effectively applies GPS to the enhancement of Omega with a cost-effective operator installation. The accuracy enhancement thus achieved also increases the reliability of navigation and furnishes aviation fuel savings superior to those of Omega, as a result of reduced flight-path wavering. The prospective GPS/GLONASS navigation system currently undergoing definition will be the first certifiable as a sole means on navigation; the Omega/VLF/GPS hybrid can serve as a transitional system.

  2. Using Caenorhabditis elegans to Uncover Conserved Functions of Omega-3 and Omega-6 Fatty Acids

    Jennifer L. Watts

    2016-02-01

    Full Text Available The nematode Caenorhabditis elegans is a powerful model organism to study functions of polyunsaturated fatty acids. The ability to alter fatty acid composition with genetic manipulation and dietary supplementation permits the dissection of the roles of omega-3 and omega-6 fatty acids in many biological process including reproduction, aging and neurobiology. Studies in C. elegans to date have mostly identified overlapping functions of 20-carbon omega-6 and omega-3 fatty acids in reproduction and in neurons, however, specific roles for either omega-3 or omega-6 fatty acids are beginning to emerge. Recent findings with importance to human health include the identification of a conserved Cox-independent prostaglandin synthesis pathway, critical functions for cytochrome P450 derivatives of polyunsaturated fatty acids, the requirements for omega-6 and omega-3 fatty acids in sensory neurons, and the importance of fatty acid desaturation for long lifespan. Furthermore, the ability of C. elegans to interconvert omega-6 to omega-3 fatty acids using the FAT-1 omega-3 desaturase has been exploited in mammalian studies and biotechnology approaches to generate mammals capable of exogenous generation of omega-3 fatty acids.

  3. Estudio de la densidad y de la viscosidad de algunos ácidos grasos puros

    Cedeño González, Fidel Oscar

    1999-10-01

    Full Text Available An experimental study is carried out according to ASTM analysis methods of two physical properties, density and viscosity, of palmitic, stearic and oleic fatty acids; compounds which are present in the deodorization effluents of edible oils, with a view to their physics chemical characterisation needed for the design of surface condensers and freezers that could be employed in the recovery of these effluents. The measures are carried out every 5 °C, from temperatures close to those of solidification in each compound, of great interest in our study, to 100 °C. The values of these properties are contrasted with those that appear in the literature, and the experimental measures are correlated. Values of the density are also obtained applying Rackett's equation and those of dynamic viscosity using Andrade's equation, and then compared with experimental measures. Experimental data of the dynamic viscosity for oleic acid at low temperatures (between 0 and 24 °C are also presented, because of their interest in the design of the previously mentioned equipment.

    En este trabajo se realiza un estudio experimental de acuerdo con los métodos de análisis de la ASTM de las propiedades físicas, densidad y viscosidad en los ácidos grasos palmítico, esteárico y oleico; compuestos que están presentes en los efluentes de la desodorización de aceites comestibles, con vistas a la caracterización físico química necesaria en el diseño de condensadores y congeladores de superficie que pueden aplicarse a la recuperación de estos efluentes. Las medidas se realizan de 5 en 5 °C entre temperaturas muy próximas a las de solidificación en cada compuesto, de gran interés en nuestro estudio, y los 100 °C. Se contrastan los valores de estas propiedades, con los que aparecen en la literatura y se correlacionan las medidas experimentales. También se obtienen valores de la densidad aplicando la ecuación de Rackett y de la viscosidad din

  4. $\\Omega\\Omega$ interaction from 2+1 flavor lattice QCD

    Yamada, Masanori; Sasaki, Kenji; Aoki, Sinya; Doi, Takumi(Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198, Japan); Hatsuda, Tetsuo(Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198, Japan); Ikeda, Yoichi; Inoue, Takashi; Ishii, Noriyoshi; Murano, Keiko; Nemura, Hidekatsu

    2015-01-01

    We investigate the interaction between $\\Omega$ baryons in the $^1S_0$ channel from 2+1 flavor lattice QCD simulations. On the basis of the HAL QCD method, the $\\Omega\\Omega$ potential is extracted from the Nambu-Bethe-Salpeter wave function calculated on the lattice by using the PACS-CS gauge configurations with the lattice spacing $a\\simeq 0.09$ fm, the lattice volume $L\\simeq 2.9$ fm and the quark masses corresponding to $m_\\pi \\simeq 700$ MeV and $m_\\Omega \\simeq 1970$ MeV. The $\\Omega\\Om...

  5. Universal graphs at $\\aleph_{\\omega_1+1}$

    Davis, Jacob

    2016-01-01

    Starting from a supercompact cardinal we build a model in which $2^{\\aleph_{\\omega_1}}=2^{\\aleph_{\\omega_1+1}}=\\aleph_{\\omega_1+3}$ but there is a jointly universal family of size $\\aleph_{\\omega_1+2}$ of graphs on $\\aleph_{\\omega_1+1}$. The same technique will work for any uncountable cardinal in place of $\\omega_1$.

  6. 1 {\\Omega}-10 k{\\Omega} high precision transportable setup to calibrate multifunction electrical instruments

    Capra, P P

    2015-01-01

    A temperature controlled 1 {\\Omega}-10 k{\\Omega} standard Resistors transportable setup was developed at National Institute of Metrological Research, (INRIM) for the calibration and adjustment of multifunction electrical instruments. The two Standards consist respectively of two 10 {\\Omega} and 100 k{\\Omega} parallel connected resistors nets inserted in a temperature controlled aluminium box. Novelty of the realization is the oil insertion of the 1 {\\Omega} net with its internal connectors lowering the thermo-electromotive forces (emfs) effects. Short and mid-term stabilities of the setup Standards resulted on the order and in some cases better than other top level 1 {\\Omega} and 10 k{\\Omega} commercial Standards. The transport effect turning off the setup temperature control did not cause appreciable measurement deviations on the two Standards. The Standards uncertainties meet those requested by DMMs and MFCs manufacturers to calibrate and adjust these instruments. A test to adjust a multifunction calibrator...

  7. The structure of omega3 food emulsions

    Jensen, Louise Helene Søgaard; Loussert, C.; Horn, Anna Frisenfeldt;

    Fish oil is rich in polyunsaturated omega-3 fatty acids (omega-3 PUFAs) which are generally recognized as being beneficial to the health [1]. The addition of fish oil to food products is attractive to both the consumers and the food industry. Indeed, these components will improve nutritional value...... and add product value. Omega-3 PUFAs are rich in double bonds in their fatty acid chains and this attribute renders them highly susceptible to lipid oxidation. Omega-3 PUFAs can be added to food products as neat oil or as a delivery system such as oil-in-water emulsions. In this last configuration......, the oil is surrounded by an emulsifier e.g. proteins, phospholipids or hydro-colloids. This emulsifier layer is important and may protect the oil inside the droplets against prooxidants in the surrounding water phase; the emulsifier should act as a physical barrier between the omega-3 PUFAs and the...

  8. Effect of omega-3 on auditory system

    Vida Rahimi

    2014-01-01

    Full Text Available Background and Aim: Omega-3 fatty acid have structural and biological roles in the body 's various systems . Numerous studies have tried to research about it. Auditory system is affected a s well. The aim of this article was to review the researches about the effect of omega-3 on auditory system.Methods: We searched Medline , Google Scholar, PubMed, Cochrane Library and SID search engines with the "auditory" and "omega-3" keywords and read textbooks about this subject between 19 70 and 20 13.Conclusion: Both excess and deficient amounts of dietary omega-3 fatty acid can cause harmful effects on fetal and infant growth and development of brain and central nervous system esspesially auditory system. It is important to determine the adequate dosage of omega-3.

  9. Excited State Mass spectra of doubly heavy baryons $\\Omega_{cc}$, $\\Omega_{bb}$ and $\\Omega_{bc}$

    Shah, Zalak; Rai, Ajay Kumar

    2016-01-01

    We discuss the mass spectrum of $\\Omega$ baryon with two heavy quarks and one light quark (\\textit{ccs, bbs and bcs}). The main goal of the paper is to calculate the ground state masses and after that, the positive and negative parity excited states masses are also obtained within a Hypercentral Constituent quark model, using coulomb plus linear potential framework. We also added first order correction to the potential. The mass spectra upto 5S for radial excited states and 1P-5P, 1D-4D and 1F-2F states for orbital excited states are computed for $\\Omega_{cc}$, $\\Omega_{bb}$ and $\\Omega_{bc}$ baryons. Our obtained results are compared with other theoretical predictions which could be a useful complementary tool for the interpretation of experimentaly unknown heavy baryon spectra. The Regge trajectory is constructed in both ($n_r$, $M^{2}$) and ($J$, $M^{2}$) planes for $\\Omega_{cc}$,$\\Omega_{bb}$ and $\\Omega_{bc}$ baryons and their slopes and intercepts are also determined. Magnetic moments of doubly heavy $\\...

  10. Contenido en isómeros geométricos de los ácidos grasos en helados comerciales españoles

    León, M.

    2003-03-01

    Full Text Available Eight samples of different varieties of commercial ice-creams sold in Spain were analysed for their fatty acid composition, with relevance on their trans-fatty acid profile. Saturated fatty acids occurred in the largest proportions in all samples (mean=68,1%, followed by monounsaturated (mean=21,1% and polyunsaturated fatty acids (mean=5,2%. Trans fatty acids were detected in all samples ranging from 0,5%-19%, mean value 5,7%. Statistical analysis (cluster analysis based on their fatty acid profile (saturated, monounsaturated and polyunsaturated and trans fatty acids showed three groups of samples, depending on the main source of fat employed.Ocho muestras de distintas variedades de helados comercializados en España han sido analizadas para determinar su contenido en ácidos grasos de cadena media y larga, con especial interés en el contenido en ácidos grasos trans. La fracción mayoritaria en todos los casos, está constituida por los ácidos grasos saturados, que presentan un valor medio del 68,1%, seguido de la fracción de monoinsaturados (media=21,1% y poliinsaturados (media=5,1%. El contenido en ácidos grasos trans, detectado en todas las muestras, oscila entre 0,5%-19%, con un valor medio de 5,7%. El análisis estadístico (análisis cluster realizado, basándonos en el contenido en ácidos grasos saturados, monoinsaturados, poliinsaturados y trans, ha permitido diferenciar tres grupos distintos de helados según la fuente de grasa mayoritaria empleada en su elaboración.

  11. Respiration gating and Bloch fitting improve pH measurements with acidoCEST MRI in an ovarian orthotopic tumor model

    Jones, Kyle M.; Randtke, Edward A.; Howison, Christine M.; Pagel, Mark D.

    2016-03-01

    We have developed a MRI method that can measure extracellular pH in tumor tissues, known as acidoCEST MRI. This method relies on the detection of Chemical Exchange Saturation Transfer (CEST) of iopamidol, an FDA-approved CT contrast agent that has two CEST signals. A log10 ratio of the two CEST signals is linearly correlated with pH, but independent of agent concentration, endogenous T1 relaxation time, and B1 inhomogeneity. Therefore, detecting both CEST effects of iopamidol during in vivo studies can be used to accurately measure the extracellular pH in tumor tissues. Past in vivo studies using acidoCEST MRI have suffered from respiration artifacts in orthotopic and lung tumor models that have corrupted pH measurements. In addition, the non-linear fitting method used to analyze results is unreliable as it is subject to over-fitting especially with noisy CEST spectra. To improve the technique, we have recently developed a respiration gated CEST MRI pulse sequence that has greatly reduced motion artifacts, and we have included both a prescan and post scan to remove endogenous CEST effects. In addition, we fit the results by parameterizing the contrast of the exogenous agent with respect to pH via the Bloch equations modified for chemical exchange, which is less subject to over-fitting than the non-linear method. These advances in the acidoCEST MRI technique and analysis methods have made pH measurements more reliable, especially in areas of the body subject to respiratory motion.

  12. Optics Performance at 1(omega), 2 (omega), and 3 (omega): Final Report on LDRD Project 03-ERD-071

    Honig, J; Adams, J; Carr, C; Demos, S; Feit, M; Mehta, N; Norton, M; Nostrand, M; Rubenchik, A; Spaeth, M

    2006-02-08

    The interaction of intense laser light with dielectric materials is a fundamental applied science problem that is becoming increasingly important with the rapid development of ever more powerful lasers. To better understand the behavior of optical components in large fusion-class laser systems, we are systematically studying the interaction of high-fluence, high-power laser light with high-quality optical components, with particular interest on polishing/finishing and stress-induced defects and surface contamination. We focus on obtaining comparable measurements at three different wavelengths, 1{omega} (1053 nm), 2{omega} (527 nm), and 3{omega} (351 nm).

  13. Fritura de filetes de sardinas congeladas en aceite de oliva. Influencia de diferentes métodos de descongelación sobre el contenido graso y la composición en ácidos grasos

    Álvsarez-Pontes, M. E.

    1994-06-01

    Full Text Available To study the effect of freezing and different thawing methods on the moisture, fat an fatty acid content of fried sardines, fresh sardine fillets were first frozen and then some were thawed either in a refrigerator at 4°C or in a microwave over prior to frying. These fillets were then analyzed both before and after being fried in olive oil. Frying increased the fat content of the fillets, mainly due to water losses, especially in those thawed in the refrigerator. Mono-unsaturated fatty acid (MUFA content increased in fresh and frozen fillets after frying from 21% to 55% and 56%, respectively. However, thawing prior to frying had a different effect depending on the method because oleic acid absorption was facilitated by refrigerator-thawing, the MUFA content increased to 61,8%, whereas after microwave-thawing the MUFA content reached 47%. Saturated and polyunsaturated fatty acids decreased in fried fillets compared to uncooked ones as a consequence of the increase in MUFA. Frying decreased the C22:6/C16:0 ratio with respect to fresh fillets in frozen fillets and in those thawed in the refrigerator but not in those thawed in a microwave.

    Filetes de sardinas frescas, congeladas y descongeladas en frigorífico a 4°C o en microondas se analizaron en crudo y después de freírlos en aceite de oliva, con objeto de conocer si la congelación y descongelación, previa a la fritura, alteraba los cambios en humedad, grasa y composición en ácidos grasos que introdujera la fritura. El contenido graso (g/100g de filetes de sardinas se incrementó durante el proceso de fritura, debido, sobre todo, a las pérdidas de agua. Dicho efecto aumentó principalmente en la descongelación en frigorífico. Con la fritura, la sardina fresca y la congelada sin previa descongelación se enriquecieron en ácido oleico, ascendiendo el contenido de ácidos grasos monoinsaturados en (AGM del 21 al 55-56%. La descongelación, anterior a la fritura, influyó de forma

  14. Perfil de ácidos grasos en leche de vacas Chinampas (Bos taurus alimentadas con forraje fresco de matorral sarcocaulescente o heno de alfalfa Fatty acids profile in milk of Chinampo cows (Bos taurus fed fresh forage from sarcocaulescent shrubs or alfalfa hay

    R Ortega-Pérez

    2013-01-01

    Full Text Available El objetivo del estudio fue determinar la concentración de ácidos grasos (AG en la leche de vacas Chinampas, con énfasis en los ácidos grasos conjugados (CLA. Se colectó una muestra manual de leche (10 ml de 32 vacas entre los 60 y 120 días de lactación. Un grupo (FV; n = 25 se alimentó en pastoreo con forraje verde durante la estación de lluvias de septiembre a octubre de 2009 en una zona semiárida de matorral sarcocaulescente (Municipio La Paz, B.C.S.. Otro grupo (HA; n = 7 se mantuvo en corral y se alimentó con heno de alfalfa. El análisis cromatográfico revela que la concentración de AG saturados fue menor (P The objective of the present study was to determine the concentration of fatty acids (FA in the milk of Chinampo cows (Bos taurus, with emphasis on conjugated fatty acids (CLA. A sample of 10 ml was collected from 32 cows that had been lactating at least 60 days, but not longer than 120 days. A group (FV, n = 25 was free-ranged grazed on green fresh pasture (sarcocaulescent shrub semiarid area, La Paz, B.C.S. during the wet season (September-October 2009. The second group (HA, n = 7 was penned and fed fodder of alfalfa hay. The FA analysis revealed that there were less saturated FA in the FV group (P < 0.05. This difference was basically explained by the lesser content of 14:0, 15:0, and 16:0. The concentration of total monounsaturated FA was higher in FV (P < 0.05, given by the higher concentration of 18:1 n-9 and 18:1 n-7 trans-11. The total concentration of polyunsaturated FA was similar for both groups, but there was a higher concentration of 18:2 n-6 and 18:2 n-7 cis-9 trans-11 in the FV group (P < 0.01. The proportion of omega-3 FA was similar for both groups, but the concentration of omega-6 FA was higher in FV (P < 0.01, resulting in an increased omega-6:omega-3 ratios in the FV group compared to HA. It is concluded that Chinampo cows left to free-range on fresh green pasture reduced the total saturated FA of

  15. EFECTO DE LOS ÁCIDOS GRASOS POLIINSATURADOS SOBRE POBLACIÓN FOLICULAR Y CALIDAD OVOCITARIA EN OVEJAS PELIBUEY

    Victor Meza-Villalvazo; Hector Magaña; Carlos Sandoval; Monserrat Morales; Alfonso Chay; Alfredo Trejo

    2013-01-01

    Se estudió el efecto de los ácidos grasos poliinsaturados en la dieta de ovejas Pelibuey, en el tamaño de los folículos y la calidad de los ovocitos. Treinta ovejas se colocaron al azar en tres tratamientos, y se alimentaron con una dieta base y 0, 3, 6 % de aceite de maíz, para TA0, TA3 y TA6 respectivamente. Los celos se sincronizaron con tres inyecciones de PGF2α a intervalos de siete días. La primera aplicación fue el día de inicio del experimento (día 0). Sobre el celo detectado se aplic...

  16. CONTENIDO DE ÁCIDOS GRASOS, COMPUESTOS FENÓLICOS Y CALIDAD INDUSTRIAL DE MAÍCES NATIVOS DE GUANAJUATO

    Guzmán-Maldonado, Salvador H.; Ma. Gricelda Vázquez-Carrillo; J. Alfonso Aguirre-Gómez; Isela Serrano-Fujarte

    2015-01-01

    Para evitar la pérdida irreversible de maíces (Zea mays L.) nativos, es necesaria su recolección, conservación y caracterización. Este estudio tuvo como objetivo evaluar el potencial nutricional, funcional e industrial de maíces nativos del norte de El Bajío colectados en 2011. A 24 muestras de maíz de granos blanco, rojo y negro, de las razas Cónico Norteño, Chalqueño, Celaya, Bolita, Ratón, Tuxpeño y Mushito se les determinó contenido de aceite, perfil de ácidos grasos, contenido de ...

  17. Composición de ácidos grasos en ovas de trucha arco iris (Oncorhynchus mykiss, Walbaum, 1792

    Rafael Rosado Puccini

    2012-06-01

    Full Text Available En este artículo se analizan con parámetros de composición 58 puestas de trucha arcoiris obtenidas, manejadas y monitoreadas individualmente en desempeño desde la fertilización hasta finalizar la etapa de reabsorción de vesícula. Además de los valores reproductivos, el contenido de ácidos grasos en las ovas se determinó en fresco, mediante cromatografía de gases. En el perfil medio se destacan los ácidos palmítico (C16, oleico (C18:1n-9 y docosahexaenoico (C22:6n-3 como los más representativos, con casi el 60% del total y, en general, en concentraciones estables entre las hembras. Tanto para cada ácido determinado como para el conjunto de contenidos integrados de las series n-3 y n-6, y los colectivos de saturados (SAF, monoinsaturados (MUFA y poliinsaturados (PUFA, se define un patrón de composición similar al reportado para la especie en otros esquemas de manejo y bajo regímenes nutricionales variables. Se analizó la condición conservativa en la incorporación de ácidos grasos al huevo, y se discutió su utilidad como posibles definitorios de calidad, teniendo como referente la alta variabilidad registrada en la supervivencia al final del proceso de incubación.

  18. Constraints on$\\ Omega_{B}, \\Omega_{M}$ and $h$ from MAXIMA and BOOMERANG

    Padmanabhan, T; Sethi, Shiv K.

    2000-01-01

    We analyse the BOOMERANG and MAXIMA results in the context of models with $\\Omega_{\\rm Total} = 1$ and $n_s = 1$. We attempt to constrain three other parameters---$h$, $\\Omega_B$, and $\\Omega_m$---from these observations. We show that: (a) the value of $\\Omega_B h^2$ is too high to be compatible with primordial nucleosynthesis observations at 95% confidence level (b) universe with age greater than $ 12 \\rm Gyr$ is ruled out at 95% confidence level and (c) the value of $\\Omega_m h$ is too high to be compatible with the shape of the power spectrum of gravitational clustering. In effect, our analysis shows that models with $\\Omega_{\\rm Total} = 1$ and $n_s = 1$ are ruled out by BOOMERANG and MAXIMA observations.

  19. A study of the lunisolar secular resonance $2\\dot{\\omega}+\\dot{\\Omega}=0$

    Celletti, Alessandra

    2016-01-01

    The dynamics of small bodies around the Earth has gained a renewed interest, since the awareness of the problems that space debris can cause in the nearby future. A relevant role in space debris is played by lunisolar secular resonances, which might contribute to an increase of the orbital elements, typically of the eccentricity. We concentrate our attention on the lunisolar secular resonance described by the relation $2\\dot{\\omega}+\\dot{\\Omega}=0$, where $\\omega$ and $\\Omega$ denote the argument of perigee and the longitude of the ascending node of the space debris. We introduce three different models with increasing complexity. We show that the growth in eccentricity, as observed in space debris located in the MEO region at the inclination about equal to $56^\\circ$, can be explained as a natural effect of the secular resonance $2\\dot{\\omega}+\\dot{\\Omega}=0$, while the chaotic variations of the orbital parameters are the result of interaction and overlapping of nearby resonances.

  20. Omega-6/Omega-3 and PUFA/SFA in Colossoma macropomum Grown in Roraima, Brazil

    Antonio Alves Melho Filho

    2013-05-01

    Full Text Available In this study was evaluated the fatty acids composition of tambaqui (Colossoma macropomum fillet, fish species cultivated in Roraima State, Brazil. For the extraction of tambaqui oil was used Sohxlet device and then it was methylated. The oil  was identified using a gas chromatograph and were identified 24 acids and these were divided into characteristic groups such as: saturated fatty acids (SFA, monounsaturated fatty acids (MUFA, polyunsaturated fatty acids (PUFA and series fatty acids omega-6 and omega-3. The ratios obtained were PUFA/SFA and omega-6/omega-3. The results of chromatographic analysis were subjected to tests by variance ANOVA and multiple comparisons of Tukey at 5%. The ratios omega-6/omega-3 and PUFA/SFA showed values ​​of 8.58 and 0.75 respectively.

  1. A study of the lunisolar secular resonance $2dot{omega}+dot{Omega}=0$

    Alessandra eCelletti

    2016-03-01

    Full Text Available The dynamics of small bodies around the Earth has gained a renewed interest,since the awareness of the problems that space debris can cause in thenearby future. A relevant role in space debris is played by lunisolarsecular resonances, which might contribute to an increase of the orbitalelements, typically of the eccentricity. We concentrate our attention onthe lunisolar secular resonance described by the relation$2dot{omega}+dot{Omega}=0$, where $omega$ and $Omega$ denotethe argument of perigee and the longitude of the ascending node of the space debris.We introduce three different models with increasing complexity. We show that the growth in eccentricity, as observed in space debris located in the MEO region at the inclination about equal to $56^circ$, can be explained as a natural effect of the secular resonance $2dot{omega}+dot{Omega}=0$, while the chaotic variations of the orbital parameters are the result of interaction and overlapping of nearby resonances.

  2. An Increase in the Omega-6/Omega-3 Fatty Acid Ratio Increases the Risk for Obesity

    Artemis P. Simopoulos

    2016-01-01

    In the past three decades, total fat and saturated fat intake as a percentage of total calories has continuously decreased in Western diets, while the intake of omega-6 fatty acid increased and the omega-3 fatty acid decreased, resulting in a large increase in the omega-6/omega-3 ratio from 1:1 during evolution to 20:1 today or even higher. This change in the composition of fatty acids parallels a significant increase in the prevalence of overweight and obesity. Experimental studies have sugg...

  3. Omega-3 fats: Good for your heart

    ... contain two kinds of omega-3s. These are EPA and DHA. Both have direct benefits for your heart. You ... benefits your heart, but not as directly as EPA and DHA. Still, eating nuts, seeds, and healthy oils as ...

  4. Challenges when developing omega-3 enriched foods

    JACOBSEN Charlotte

    2010-07-01

    Full Text Available Due to the polyunsaturated nature of omega-3 fatty acids, lipid oxidation is a major challenge when developing omega-3 enriched foods. In multiphase food systems, several factors can affect lipid oxidation and efficacy of antioxidants, added to prevent lipid oxidation. This review discusses the influence of important factors such as oil quality, delivery systems for omega-3 fatty acids, processing conditions, composition of the food matrix on lipid oxidation in different omega-3 enriched foods (milk, yoghurt, mayonnaise and mayonnaise-based salads, dressing, energy bar and fish paté. Moreover, the effect of different antioxidants (tocopherol, EDTA, lactoferrin, caffeic acid, ascorbic acid, ascorbyl palmitate, propyl gallate, gallic acid, as well as lipophilized antioxidants is compared in different food systems.

  5. OMEGA for the Future of Biofuels

    Trent, Jonathan

    2010-01-01

    OMEGA: Offshore Membrane Enclosure for Growing Algae. To develop a photobioreactor (PBR) for growing algae (Oil, food, fertilizer) that does not compete with agriculture for land (deployed offshore), water or fertilizer (uses/treats wastewater).

  6. Overview of Omega-3 Fatty Acid Therapies

    Bradberry, J. Chris; Hilleman, Daniel E.

    2013-01-01

    Products containing omega-3 fatty acids, such as krill oil and fish oils, have been effective in lowering triglyceride levels. Although no data have suggested that the low-density lipoprotein-cholesterol (LDL-C) increases associated with some omega-3 fatty acid formulations lead to adverse outcomes, these elevations in LDL-C levels may compromise the achievement of lipid targets. Thus, there is a need for agents that can lower triglyceride levels without increasing LDL-C levels.

  7. Measurement of the Omega_c^0 lifetime

    Iori, M; Akgun, U; Alkhazov, G; Amaro-Reyes, J; Atamanchuk, A G; Balatz, M Y; Blanco-Covarrubias, A; Bondar, N F; Cooper, P S; Dauwe, L J; Davidenko, G V; Dersch, U; Dolgolenko, A G; Dzyubenko, G B; Edelstein, R; Emediato, L; Endler, A M F; Engelfried, J; Eschrich, I; Escobar, C O; Evdokimov, A V; Filimonov, I S; García, F G; Gaspero, M; Giller, I; Golovtsov, V L; Gouffon, P; Gülmez, E; Kangling, He; Jun, S Y; Kaya, M; Kilmer, J; Kim, V T; Kochenda, L M; Konorov, I; Kozhevnikov, A P; Krivshich, A G; Krüger, H; Kubantsev, M A; Kubarovskii, V P; Kulyavtsev, A I; Kuropatkin, N P; Kurshetsov, V F; Kushnirenko, A; Kwan, S; Lach, J; Lamberto, A; Landsberg, L G; Larin, I; Leikin, E M; Yunshan, Li; Luksys, M; Lungov, T; Maleev, V P; Mao, D; Mao, Chensheng; Mao, Zhenlin; Mathew, P; Mattson, M; Matveev, V; McCliment, E; Moinester, M A; Molchanov, V V; Morelos, A; Nelson, K D; Nemitkin, A V; Neoustroev, P V; Newsom, C; Nilov, A P; Nurushev, S B; Ocherashvili, A; Onel, Y; Ozel, E; Ozkorucuklu, S; Penzo, Aldo L; Petrenko, S V; Pogodin, P I; Procario, M; Prutskoi, V A; Ramberg, E; Rappazzo, G F; Razmyslovich, B V; Rud, V I; Russ, J; Schiavon, Paolo; Simón, J; Sitnikov, A I; Skow, D; Smith, V J; Srivastava, M; Steiner, V; Stepanov, V; Stutte, L; Svoiski, M; Terentyev, N K; Thomas, G P; Torres, I; Uvarov, L N; Vasilev, A N; Vavilov, D V; Vazquez-Jauregui, E; Verebryusov, V S; Victorov, V A; Vishnyakov, V E; Vorobyov, A A; Vorwalter, K; You, J; Zhao, Wenheng; Zheng, Shuchen; Zukanovich-Funchal, R

    2007-01-01

    We report a precise measurement of the Omega_c^0 lifetime. The data were taken by the SELEX (E781) experiment using 600 GeV/c Sigma-, pi- and p beams. The measurement has been made using 83+/-19 reconstructed Omega_c^0 in the Omega- pi- pi+ pi+ and Omega- pi+ decay modes. The lifetime of the Omega_c^0 is measured to be 65 +/- 13(stat) +/- 9(sys) fs.

  8. Importance of a balanced omega 6/omega 3 ratio for the maintenance of health: Nutritional recommendations Importancia del equilibrio del índice omega-6/omega-3 en el mantenimiento de un buen estado de salud: Recomendaciones nutricionales

    C. Gómez Candela

    2011-04-01

    Full Text Available The modification of dietary patterns has led to a change in fatty acid consumption, with an increase in the consumption of ω-6 fatty acids and a markerd reduction in the consumption of ω-3 fatty acids. This in turn has given rise to an imbalance in the ω-6/ω-3 ratio, which is now very different from the original 1:1 ratio of humans in the past. Given the involvement of ω-6 and ω-3 essential fatty acids in disease processes, the present article examines changes in dietary patterns that have led to the present reduction in the consumption of ω-3 essential fatty acids, and to study the importance of the ω-6/ω-3 balance in maintaining good health. In addition, an assese-ment is made of the established recommendations for preventing a poor intake of ω-3 essential fatty acids, and the possible options for compensating the lack of these fatty acids in the diet.La modificación de los hábitos alimentarios ha llevado a un cambio en el consumo de ácidos grasos, con una aumento de los ácidos grasos ω-6 y una marcada reducción en el consumo de los ácidos grasos ω-3. Esto a su vez ha dado lugar a un desequilibrio en la relación ω-6/ω-3, muy diferente de la proporción original 1:1 que tenían los seres humanos en el pasado. Dada la importancia de la relación entre los ácidos grasos esenciales ω-6 y ω-3 en el desarrollo de diferentes enfermedades, en el presente artículo se examinan los cambios en los hábitos alimentarios que han llevado a la reducción en el consumo de ácidos grasos esenciales ω-3, y se estudia la importancia de este equilibrio en el mantenimiento de la salud. Además, se realiza una evaluación de las recomendaciones establecidas para prevenir una deficiencia en la ingesta de ácidos grasos esenciales ω-3, y las posibles opciones para compensar la falta de esos ácidos grasos en la dieta.

  9. Cauchy transformation and mutual dualities between $A^{-\\infty}(\\Omega)$ and $A^\\infty(\\complement\\Omega)$ for Carathéodory domains

    Abanin, A.V.; Khoi, Le Hai

    2016-01-01

    Let $\\Omega$ be a Carathéodory domain in the complex plane $\\mathbb C$, $A^{-\\infty}(\\Omega)$ the space of functions that are holomorphic in $\\Omega$ with polynomial growth near the boundary $\\partial\\Omega$, and $A^\\infty(\\complement\\Omega)$ the space of holomorphic functions in the interior of $\\complement\\Omega:=\\overline{\\mathbb C}\\setminus\\Omega$, vanishing at infinity and being in $C^\\infty(\\complement\\Omega)$. We prove that the Cauchy transformation of analytic fun...

  10. A Protective Lipidomic Biosignature Associated with a Balanced Omega-6/Omega-3 Ratio in fat-1 Transgenic Mice

    Giuseppe Astarita; McKenzie, Jennifer H.; Bin Wang; Katrin Strassburg; Angela Doneanu; Jay Johnson; Andrew Baker; Thomas Hankemeier; James Murphy; Vreeken, Rob J.; James Langridge; Kang, Jing X.

    2014-01-01

    A balanced omega-6/omega-3 polyunsaturated fatty acid (PUFA) ratio has been linked to health benefits and the prevention of many chronic diseases. Current dietary intervention studies with different sources of omega-3 fatty acids (omega-3) lack appropriate control diets and carry many other confounding factors derived from genetic and environmental variability. In our study, we used the fat-1 transgenic mouse model as a proxy for long-term omega-3 supplementation to determine, in a well-contr...

  11. A host-microbiome interaction mediates the opposing effects of omega-6 and omega-3 fatty acids on metabolic endotoxemia

    Kaliannan, Kanakaraju; Wang, Bin; Li, Xiang-Yong; Kim, Kui-Jin; Kang, Jing X.

    2015-01-01

    Metabolic endotoxemia, commonly derived from gut dysbiosis, is a primary cause of chronic low grade inflammation that underlies many chronic diseases. Here we show that mice fed a diet high in omega-6 fatty acids exhibit higher levels of metabolic endotoxemia and systemic low-grade inflammation, while transgenic conversion of tissue omega-6 to omega-3 fatty acids dramatically reduces endotoxemic and inflammatory status. These opposing effects of tissue omega-6 and omega-3 fatty acids can be e...

  12. N-3 fatty acids in glucose metabolism and insulin sensitivity Ácidos grasos n-3 en el metabolismo de la glucosa y la sensibilidad a la insulina

    L. Martín de Santa Olalla

    2009-04-01

    Full Text Available Polyunsaturated fatty acids (PUFA of the n-3 series are essential for normal growth and development. The health effects of these fatty acids include reduction of cardiovascular risk due to antiarrhythmic, antiinflammatory, anti-thrombotic and lipid lowering actions. An increase in unsaturation of the muscle membrane fatty acids is associated with improved insulin sensitivity. Higher proportion of n-3 fatty acids may have beneficial roles, such as antiobesity effects and protection against the metabolic syndrome and type 2 diabetes mellitus through a number of metabolic effects. However, controversy exists on the different effects of n-6 and n-3 polyunsaturated fatty acids as well as on the interacting effect of dietary saturated and monounsaturated fat. In addition, some adverse effects have been described concerning the use of fish oil supplements containing high doses of n-3 fatty acids. Several studies show Eskimos diabetes risk, while results of nutritional interventions on the influence of consuming diets rich in oily fish or other food rich in n-3 fatty acids is very limited. This article reviews the possible mechanisms through which n-3 PUFA are involved in glucose level control and insulin sensitivity. Intervention and epidemiological studies together with recent findings on the nutrigenomic field related with this subject are also briefly reviewed.Los ácidos grasos poliinsaturados (AGP de la serie n-3 son esenciales para el crecimiento normal y el desarrollo. Los efectos de estos ácidos grasos en la salud incluyen reducción del riesgo cardiovascular debido a acciones antiarrítmicas, antiinflamatorias, antitrombóticas e hipolipemiantes. Un aumento en la insaturación de los ácidos grasos de la membrana muscular se asocia con mejora en la sensibilidad a la insulina. Una mayor proporción de ácidos grasos n-3 puede desempeñar papeles beneficios, tales como efectos antiobesidad y protección frente al síndrome metabólico y la

  13. Measurements of B meson decays to (omega)K* and (omega)(rho)

    Aubert, B; Cheng, C H; Lange, D J; Simani, M C; . Wright, D M; Abrams, G S; Borgland, A W; Breon, A B; Brown, D N; Button-Shafer, J; Cahn, R H; Charles, E; Day, C T; Gill, M S; Gritsan, A V; Groysman, Y; Jacobsen, R G; Kadel, R W; Kadyk, J; Kerth, L T; Kolomensky, Y G; Kukartsev, G; Lynch, G; Mir, L M; Oddone, P J; Orimoto, T J; Pripstein, M; Roe, N A; Ronan, M T; Wenzel, W A; Abe, T; Aston, D; Bartoldus, R; Berger, N; Boyarski, A M; Buchmueller, O L; Claus, R; Convery, M R; Cristinziani, M; De Nardo, G; Dong, D; Dorfan, J; Dujmic, D; Dunwoodie, W; Fan, S; Field, R C; Glanzman, T; Gowdy, S J; Hadig, T; Halyo, V; Hast, C; Hryn' ova, T; Innes, W R; Kelsey, M H; Kim, P; Kocian, M L; Keith, D W . S; Libby, J; Luitz, S; Luth, V; Lynch, H L; Marsiske, H; Messner, R; Muller, D R; O' Grady, C P; Ozcan, V E; Perazzo, A; Perl, M; Petrak, S; Ratcliff, B N; Roodman, A; Salnikov, A A; Schindler, R H; Schwiening, J; Snyder, A; Soha, A; Stelzer, H; Strube, J; Su, D; Sullivan, M K; Va' vra, J; Wagner, S R; Weaver, M; Wisniewski, W J; Wittgen, M; Wright, D H; Yarritu, A K; Young, C C; Collaboration, B

    2006-03-14

    The authors describe searches for B meson decays to the charmless vector-vector final states {omega}K* and {omega}{rho} in 89 million B{bar B} pairs produced in e{sup +}e{sup -} annihilation at {radical}s = 10.58 GeV.

  14. Analysis of $\\Omega_c^*(css)$ and $\\Omega_b^*(bss)$ with QCD sum rules

    Wang, Zhi-Gang

    2007-01-01

    In this article, we calculate the masses and residues of the heavy baryons $\\Omega_c^*(css)$ and $\\Omega_b^*(bss)$ with spin-parity ${3/2}^+$ with the QCD sum rules. The numerical values are compatible with experimental data and other theoretical estimations.

  15. Balancing omega-6 and omega-3 fatty acids in ready-to-use therapeutic foods (RUTF).

    Brenna, J Thomas; Akomo, Peter; Bahwere, Paluku; Berkley, James A; Calder, Philip C; Jones, Kelsey D; Liu, Lei; Manary, Mark; Trehan, Indi; Briend, André

    2015-01-01

    Ready-to-use therapeutic foods (RUTFs) are a key component of a life-saving treatment for young children who present with uncomplicated severe acute malnutrition in resource limited settings. Increasing recognition of the role of balanced dietary omega-6 and omega-3 polyunsaturated fatty acids (PUFA) in neurocognitive and immune development led two independent groups to evaluate RUTFs. Jones et al. (BMC Med 13:93, 2015), in a study in BMC Medicine, and Hsieh et al. (J Pediatr Gastroenterol Nutr 2015), in a study in the Journal of Pediatric Gastroenterology and Nutrition, reformulated RUTFs with altered PUFA content and looked at the effects on circulating omega-3 docosahexaenoic acid (DHA) status as a measure of overall omega-3 status. Supplemental oral administration of omega-3 DHA or reduction of RUTF omega-6 linoleic acid using high oleic peanuts improved DHA status, whereas increasing omega-3 alpha-linolenic acid in RUTF did not. The results of these two small studies are consistent with well-established effects in animal studies and highlight the need for basic and operational research to improve fat composition in support of omega-3-specific development in young children as RUTF use expands. PMID:25980919

  16. Estudio analítico de la composición en ácidos grasos de mostaza y salsas de mostaza.

    López Argüello, E.

    1999-12-01

    Full Text Available In order to characterise mustard (whole seed or flour, mustard sauces with grain and mustard sauces in relation to their base seed, the concentrations of fatty acid were determinated by gas chromatography (GC. Erucic acid was the most abundant fatty acid component in mustard and mustard sauces (27,7 % and 24,6 % of total fatty acid content, followed by oleic acid (20,0 % and 21,1 % and linolenic acid (16,3 % and 16.2%. The major acid in mustard sauces with grain was linolenic (21,4 %, followed by linoleic acid (20,3 % and oleic acid (19,3 %. By means of correlation and discriminant analysis the samples have been grouped and classified. It is shown that fatty acid are usefull parameters for quality control analysis of mustard sauces.

    Se determinaron, por cromatografía gaseosa, el perfil de los ácidos grasos en mostaza (semilla y harina, salsas de mostaza con grano y salsas finas de mostaza con el objeto de caracterizarlas en relación con la semilla base. El ácido erúcico fue el más abundante en la mostaza y en las salsas finas (27,7 % y 24,6 % del contenido total de ácidos grasos, seguido de los ácidos oleico (20,0 % y 21,1 % y linoleico (16,3 y 16.2 %. En las salsas de mostaza con grano el ácido graso mayoritario fue el linolénico (21,4 % seguido de los ácidos linoleico (20,3 % y oleico (19,3 %. Mediante los análisis de correlación y discriminante las muestras son agrupadas y clasificadas. Los ácidos grasos han demostrado ser parámetros válidos para el análisis del control de calidad de las salsas de mostaza.

  17. Evolución del contenido de ácidos grasos de aceite de aguacate durante la maduración

    Martín Nieto, L.

    1995-04-01

    Full Text Available The minimum fat richness of avocados necessary for marketing of the fruit is 8%, although after vegetative maturation values of about 20% or more are reached, the values depending on the variety. In the period between harvesting, when commercial maturity is reached, and full maturation, not only is the fat content increased but changes also occur in the fat composition, the unsaturated fatty acids increasing while the amount of saturated fatty acids decreases.

    La riqueza grasa mínima exigida al aguacate para su salida al mercado es del 8%, aunque en la maduración vegetativa se alcanzan valores de alrededor del 20% o más según variedades. En el período que transcurre desde el corte del fruto, de acuerdo con la madurez comercial, hasta la completa madurez del mismo no sólo aumenta la riqueza grasa, sino que se ha observado una evolución del contenido graso, de forma que hay un aumento de los ácidos grasos Insaturados en detrimento del contenido en ácidos grasos saturados.

  18. Contenidos de isómeros trans de los ácidos grasos en productos cárnicos, (II Tejido adiposo y grasa intramuscular del cerdo

    Lluch, M. C.

    1993-04-01

    Full Text Available We give the results obtained for the determination of trans fatty acids in subcutaneous and intramuscular fats from different pork samples, using gas chromatography. Values obtained are low and similar in both kind of fats, with a mean value of 0.6% of C18:1 trans. A clear influence of animal feeding is detected due to the significant differences of this isomer content between samples from different origin. Also, correlations have been observed between C18:1 t. content and saturated, mono, polinsaturated fatty acids and fat intramuscular contents.

    Se presentan los resultados obtenidos en la determinación de ácidos grasos trans en una serie de muestras de tejidos subcutáneo y muscular, procedentes de canales de cerdo, mediante cromatografía en fase gaseosa. Ambos tipos de grasas presentan valores similares y relativamente bajos, con un valor medio del 0.6% de 018:1 t. Se detecta una marcada influencia de la alimentación, puesta de manifiesto por las diferencias significativas obtenidas para los contenidos de C18:1 trans, en función del origen de las muestras. Igualmente, se recogen las correlaciones obtenidas entre los contenidos de C18:1 t. y los de ácidos grasos saturados, monoinsaturados y poliinsaturados, así como con el contenido graso intramuscular.

  19. Rare B Meson Decays With Omega Mesons

    Zhang, Lei; /Colorado U.

    2006-04-24

    Rare charmless hadronic B decays are particularly interesting because of their importance in understanding the CP violation, which is essential to explain the matter-antimatter asymmetry in our universe, and of their roles in testing the ''effective'' theory of B physics. The study has been done with the BABAR experiment, which is mainly designed for the study of CP violation in the decays of neutral B mesons, and secondarily for rare processes that become accessible with the high luminosity of the PEP-II B Factory. In a sample of 89 million produced B{bar B} pairs on the BABAR experiment, we observed the decays B{sup 0} {yields} {omega}K{sup 0} and B{sup +} {yields} {omega}{rho}{sup +} for the first time, made more precise measurements for B{sup +} {yields} {omega}h{sup +} and reported tighter upper limits for B {yields} {omega}K* and B{sup 0} {yields} {omega}{rho}{sup 0}.

  20. Studies of the $\\omega$ meson with the KLOE detector

    Heijkenskjöld, L

    2015-01-01

    The paper presents status of three studies involving the $\\omega$ meson using data collected by the KLOE detector. The first two projects are feasibility studies performed on simulated data concerning an upper limit measure ment of BR($\\Phi \\to \\omega \\gamma$) and the form factor measurement in the $\\omega\\to\\pi^0l^+l^-$ dalitz decay. The third study shows the effect $\\pi^0 - \\pi^0$ interference has in the $\\omega\\to\\pi^+\\pi^-\\pi^0$ Dalitz plot when $\\omega$ is produced through the $e^+e^-\\to\\omega\\pi^0$ channel.

  1. A protective lipidomic biosignature associated with a balanced omega-6/omega-3 ratio in fat-1 transgenic mice.

    Giuseppe Astarita

    Full Text Available A balanced omega-6/omega-3 polyunsaturated fatty acid (PUFA ratio has been linked to health benefits and the prevention of many chronic diseases. Current dietary intervention studies with different sources of omega-3 fatty acids (omega-3 lack appropriate control diets and carry many other confounding factors derived from genetic and environmental variability. In our study, we used the fat-1 transgenic mouse model as a proxy for long-term omega-3 supplementation to determine, in a well-controlled manner, the molecular phenotype associated with a balanced omega-6/omega-3 ratio. The fat-1 mouse can convert omega-6 to omega-3 PUFAs, which protect against a wide variety of diseases including chronic inflammatory diseases and cancer. Both wild-type (WT and fat-1 mice were subjected to an identical diet containing 10% corn oil, which has a high omega-6 content similar to that of the Western diet, for a six-month duration. We used a multi-platform lipidomic approach to compare the plasma lipidome between fat-1 and WT mice. In fat-1 mice, an unbiased profiling showed a significant increase in the levels of unesterified eicosapentaenoic acid (EPA, EPA-containing cholesteryl ester, and omega-3 lysophosphospholipids. The increase in omega-3 lipids is accompanied by a significant reduction in omega-6 unesterified docosapentaenoic acid (omega-6 DPA and DPA-containing cholesteryl ester as well as omega-6 phospholipids and triacylglycerides. Targeted lipidomics profiling highlighted a remarkable increase in EPA-derived diols and epoxides formed via the cytochrome P450 (CYP450 pathway in the plasma of fat-1 mice compared with WT mice. Integration of the results of untargeted and targeted analyses has identified a lipidomic biosignature that may underlie the healthful phenotype associated with a balanced omega-6/omega-3 ratio, and can potentially be used as a circulating biomarker for monitoring the health status and the efficacy of omega-3 intervention in humans.

  2. Tukey classes of ultrafilters on omega

    Milovich, David

    2008-01-01

    Motivated by a question of Isbell, we show that Jensen's Diamond Principle implies there is a non-P-point ultrafilter U on omega such that U, whether ordered by reverse inclusion or reverse inclusion mod finite, is not Tukey equivalent to the finite sets of reals ordered by inclusion. We also show that, for every regular infinite kappa not greater than 2^{aleph_0}, if MA_{sigma-centered} holds, then some ultrafilter U on omega, ordered by reverse inclusion mod finite, is Tukey equivalent to the sets of reals of size less than kappa, ordered by inclusion. We also prove two negative ZFC results about the possible Tukey classes of ultrafilters on omega.

  3. Bubble chamber: Omega production and decay

    1973-01-01

    This image is of real particle tracks taken from the CERN 2 m liquid hydrogen bubble chamber and shows the production and decay of a negative omega particle. A negative kaon enters the chamber which decays into many particles, including a negative omega that travels a short distance before decaying into more particles. The invention of bubble chambers in 1952 revolutionized the field of particle physics, allowing real tracks left by particles to be seen and photographed by expanding liquid that had been heated to boiling point.

  4. Hierarchical Analysis of the Omega Ontology

    Joslyn, Cliff A.; Paulson, Patrick R.

    2009-12-01

    Initial delivery for mathematical analysis of the Omega Ontology. We provide an analysis of the hierarchical structure of a version of the Omega Ontology currently in use within the US Government. After providing an initial statistical analysis of the distribution of all link types in the ontology, we then provide a detailed order theoretical analysis of each of the four main hierarchical links present. This order theoretical analysis includes the distribution of components and their properties, their parent/child and multiple inheritance structure, and the distribution of their vertical ranks.

  5. Developmentally dependent and different roles of fatty acids OMEGA-6 and OMEGA-3

    Mourek, J

    2011-01-01

    The developmentally-dependent differences in the biological significances and effects of PUFA-OMEGA-6 (namely of arachidonic acid) and PUFA-OMEGA-3 (namely of docosahexaenoic acid) are discussed. The clinical results as well as developmental experiences are indicating a hypothesis of the evolution...... that created mutual relationship between those two substances (with immunological basis and following recuperation). The anti-inflammatory actions of PUFA-OMEGA-3 are the most visible (and significant) contrasts as compared with the large affects of namely arachidonic acid and its metabolites....

  6. Síntesis de óxidos tipo perovskita, mediante polimerización con acido cítrico y combustión con glicina.

    Gómez Cuaspud, Jairo A; Valencia Ríos, Jesús S

    2011-01-01

    En este trabajo se describe la preparación de la perovskita La0.25 Sr 0.25 CO 0.5 Fe 0.5 O3 (LSCoF), mediante la polimerización con acido cítrico y combustión con glicina, con el propósito de obtener materiales para potenciales aplicaciones catalíticas, eléctricas y electroquímicas; para ellos los sólidos se caracterizaron mediante difracción de rayos X (DRX) y microscopia electrónica de barrido (SEM); obteniendo información acerca de la formación y pureza de fases, la morfología, la estructu...

  7. Gouy Interferometry: Properties of Multicomponent System Omega Graphs

    Miller, D G

    2007-01-24

    We consider the properties of {Omega} graphs ({Omega} vs f(z)) obtained from Gouy interferometry on multicomponent systems with constant diffusion coefficients. We show that they must have (a) either a maximum or else a minimum between f(z)=0 and f(z)=1 and (b) an inflection point between the f(z) value at the extremum and f(z)=1. Consequently, an {Omega} graph cannot have both positive and negative {Omega} values.

  8. Observation of the doubly strange b baryon omega(-)(b)

    V.M. Abazov; . et al; S.J. de Jong; M. Demarteau; P. Houben; P.J. van den Berg

    2008-01-01

    We report the observation of the doubly strange b baryon Omega(-)(b) in the decay channel Omega(-)(b) -> J/psi Omega(-), with J/psi -> mu(+)mu(-) and Omega(-) -> Lambda K- -> (p pi(-))K-, in p (p) over bar collisions at root s = 1.96 TeV. Using approximately 1.3 fb(-1) of data collected with the D0

  9. Food supplementation for workers: flour enriched with omega -3

    Adriana Nery de Oliveira; Flavia Braidotti Stevanato; Jesuí Vergilio Visentainer

    2015-01-01

    The objective of this study was preparing a product (omega-3 flour) to increase the nutritional value of the food for workers concerning the content of omega-3 fatty acids (n-3 FA). The omega-3 flour was prepared using waste (head sardines and leaves of carrot), flaxseed flour, manioc flour and spices. The fatty acids (FA) concentration was analyzed by gas chromatography. A total of 28 FA were identified in the omega-3 flour. The concentration of eicosapentaenoic acid (EPA) and docosahexaenoi...

  10. Photoproduction of {\\omega} Mesons off the Proton

    Wilson, A; Anisovich, A V; Bacelar, J C S; Bantes, B; Bartholomy, O; Bayadilov, D; Beck, R; Beloglazov, Y A; Brinkmann, K T; Castelijns, R; Dutz, H; Elsner, D; Ewald, R; Frommberger, F; Fuchs, M; Funke, Chr; Gregor, R; Gridnev, A; Gutz, E; Hannappel, J; Hillert, W; Hoffmeister, P; Horn, I; Jaegle, I; Jude, T; Junkersfeld, J; Kalinowsky, H; Kleber, V; Klein, Frank; Klein, Friedrich; Klempt, E; Kotulla, M; Krusche, B; Lang, M; Löhner, H; Lopatin, I V; Lugert, S; Mertens, T; Messchendorp, J G; Metag, V; Nanova, M; Nikonov, V A; Novinski, D; Novotny, R; Ostrick, M; Pant, L M; van Pee, H; Pfeiffer, M; Roy, A; Sarantsev, A V; Schmidt, C; Schmieden, H; Shende, S; Sokhoyan, V; Sparks, N; Süle, A; Sumachev, V V; Szczepanek, T; Thoma, U; Trnka, D; Varma, R; Walther, D; Wendel, Ch; Wiedner, U

    2015-01-01

    The differential cross sections and unpolarized spin-density matrix elements for the reaction $\\gamma p\\to p\\omega$ were measured using the CBELSA/TAPS experiment for initial photon energies ranging from the reaction threshold to 2.5 GeV. These observables were measured from the radiative decay of the $\\omega$ meson, $\\omega\\to\\pi^0\\gamma$. The cross sections cover the full angular range and show the full extent of the $t$-channel forward rise. The overall shape of the angular distributions in the differential cross sections and unpolarized spin-density matrix elements are in fair agreement with previous data. In addition, for the first time, a beam of linearly-polarized tagged photons in the energy range from 1150 MeV to 1650 MeV was used to extract polarized spin-density matrix elements. These data were included in the Bonn-Gatchina partial wave analysis (PWA). The dominant contribution to $\\omega$ photoproduction near threshold was found to be the $3/2^+$ partial wave, which is primarily due to the sub-thr...

  11. Measurement of Elastic Omega Photoproduction at HERA

    Derrick, Malcolm; Magill, S; Mikunas, D; Musgrave, B; Okrasinski, J R; Repond, J; Stanek, R; Talaga, R L; Zhang, H; Mattingly, M C K; Anselmo, F; Antonioli, P; Bari, G; Basile, M; Bellagamba, L; Boscherini, D; Bruni, A; Bruni, G; Bruni, P; Cara Romeo, G; Castellini, G; Cifarelli, Luisa; Cindolo, F; Contin, A; Corradi, I; Gialas, I; Giusti, P; Iacobucci, G; Laurenti, G; Levi, G; Margotti, A; Massam, Thomas; Nania, R; Palmonari, F; Pesci, A; Polini, A; Sartorelli, G; Zamora-Garcia, Yu E; Zichichi, Antonino; Amelung, C; Bornheim, A; Crittenden, James Arthur; Deffner, R; Doeker, T; Eckert, M; Feld, L; Frey, A; Geerts, M; Grothe, M; Hartmann, H; Heinloth, K; Heinz, L; Hilger, E; Jakob, H P; Katz, U F; Mengel, S; Paul, E; Pfeiffer, M; Rembser, C; Schramm, D; Stamm, J; Wedemeyer, R; Campbell-Robson, S; Cassidy, A; Cottingham, W N; Dyce, N; Foster, B; George, S; Hayes, M E; Heath, G P; Heath, H F; Piccioni, D; Roff, D G; Tapper, R J; Yoshida, R; Arneodo, M; Ayad, R; Capua, M; Garfagnini, A; Iannotti, L; Schioppa, M; Susinno, G; Caldwell, A; Crtiglia, N; Jing, Z; Liu, W; Parsons, J A; Ritz, S; Sciulli, F; Straub, P B; Wai, L; Yang, S; Zhu, Q; Borzemski, P; Chwastowski, J; Eskreys, Andrzej; Jakubowski, Z; Przybycien, M B; Zachara, M; Zawiejski, L; Adamczyk, L; Bednarek, B; Jelen, K; Kisielewska, D; Kowalski, T; Rulikowska-Zarebska, E; Suszycki, L; Zajac, J; Dulinski, Z; Kotanski, Andrzej; Abbiendi, G; Bauerdick, L A T; Behrens, U; Beier, H; Bienlein, J K; Cases, G; Deppe, O; Desler, K; Drews, G; Flasinski, M; Gilkinson, D J; Glasman, C; Göttlicher, P; GroBe-Knitter, J; Haas, T; Hain, W; Hasell, D; Hessling, H; Iga, Y; Johnson, K F; Joos, P; Kasemann, M; Klanner, Robert; Koch, W; Kötz, U; Kowalski, H; Labs, J; Ladage, A; Löhr, B; Loewe, M; Lüke, D; Mainusch, J; Manczak, O; Milewski, J; Monteiro, T; Ng, J S T; Notz, D; Ohrenberg, K; Piotrzkowski, K; Roco, M T; Rohde, M; Roldán, J; Schneekloth, U; Schulz, W; Selonke, F; Surrow, B; Tassi, E; Voss, T; Westphal, D; Wolf, G; Wollmer, U; Youngman, C; Zeuner, W; Grabosch, H J; Mari, S M; Meyer, A; Schlenstedt, S; Barbagli, G; Gallo, E; Pelfer, P G; Maccarrone, G D; De Pasquale, S; Votano, L; Bamberger, Andreas; Eisenhardt, S; Trefzger, T M; Wölfle, S; Bromley, J T; Brook, N H; Bussey, Peter J; Doyle, A T; Saxon, D H; Sinclair, L E; Utley, M L; Wilson, A S; Dannemann, A; Holm, U; Horstmann, D; Sinkus, R; Wick, K; Burow, B D; Hagge, L; Lohrmann, E; Poelz, G; Schott, W; Zetsche, F; Bacon, Trevor C; Brümmer, N; Butterworth, Ian; Harris, V L; Howell, G; Hung, B Y H; Lamberti, L; Long, K R; Miller, D B; Pavel, N; Prinias, A; Sedgbeer, J K; Sideris, Daniel A; Whitfield, A F; Mallik, U; Wang, M Z; Wang, S M; Wu, J T; Cloth, P; Filges, E; An Shiz Hong; Cho, G H; Ko, B J; Lee, S B; Nam, S W; Park, H S; Park, S K; Kartik, S; Kim, H J; McNeil, R R; Metcalf, W; Nadendla, V K; Barreiro, F; Fernández, J P; Graciani, R; Hernández, J M; Hervás, L; Laberga, L; Martínez, M; Del Peso, J; Puga, J; Terrón, J; De Trocóniz, J F; Corriveau, F; Hanna, D S; Hartmann, J; Yung, L W; Lim, J N; Matthews, C G; Murray, W N; Ochs, A; Patel, P M; Riveline, M; Stairs, D G; Saint-Laurent, M G; Ullmann, R T; Zacek, G; Tsurugai, T; Bashkirov, V; Dolgoshein, B A; Stifutkin, A; Bashindzhagian, G L; Ermolov, P F; Gladilin, L K; Golubkov, Yu A; Kobrin, V D; Korzhavina, I A; Kuzmin, V A; Lukina, O Yu; Proskuryakov, A S; Savin, A A; Shcheglova, L M; Solomin, A N; Zotov, N P; Botje, M; Chlebana, F S; Engelen, J; De Kamps, M; Kooijman, P M; Kruse, A; Van Sighem, A; Tiecke, H G; Verkerke, W; Vossebeld, Joost Herman; Vreeswijk, M; Wiggers, L; De Wolf, E; Van Woudenberg, R; Acosta, D; Bylsma, B G; Durkin, L S; Gilmore, J; Ginsburg, C M; Kim, C L; Li Chuan; Ling, T Y; Nylander, P; Park, I H; Romanowsky, T A; Bailey, D S; Cashmore, Roger J; Cooper-Sarkar, A M; Devenish, R C E; Harmew, N; Lancaster, M; Lindemann, L; McFall, J D; Nath, C; Noyes, V A; Quadt, A; Tickner, J R; Uijterwaal, H; Walczak, R; Waters, D S; Wilson, F F; Yip, T; Bertolin, A; Brugnera, R; Carlin, R; Dal Corso, F; De Giorgi, M; Dosselli, U; Limentani, S; Morandin, M; Posocco, M; Stanco, L; Stroili, R; Voci, C; Zuin, F; Bulmahn, J; Feild, R G; Oh, B Y; Whitmore, J; D'Agostini, Giulio; Marini, G; Nigro, A; Hart, J C; McCubbin, N A; Shah, T P; Barberis, E; Dubbs, T; Heusch, C A; Van Hook, M; Lockman, W; Rahn, J T; Sadrozinski, H F W; Seiden, A; Williams, D C; Biltzinger, J; Seifert, R J; Schwarzer, O; Walenta, Albert H; Abramowicz, H; Briskin, G M; Dagan, S; Levy, A; Inuzuka, M; Ishii, T; Kuze, M; Mine, S; Nakao, M; Suzuki, I; Tokushuku, K; Umemori, K; Yamada, S; Yamazaki, Y; Chiba, M; Hamatsu, R; Hirose, T; Homma, K; Kitamura, S; Matsushita, T; Yamauchi, K; Cirio, R; Costa, M; Ferrero, M I; Maselli, S; Peroni, C; Sacchi, R; Solano, A; Staiano, A; Dardo, M; Bailey, D C; Bénard, F; Brkic, M; Fagerstroem, C P; Hartner, G F; Joo, K K; Levman, G M; Martin, J F; Orr, R S; Polenz, S; Sampson, C R; Simmons, D; Teuscher, R; Butterworth, J M; Catterall, C D; Jones, T W; Kaziewicz, P B; Lane, J B; Saunders, R L; Shulman, J; Sutton, M R; Lu, B; Mo, L W; Bogusz, W; Ciborowski, J; Gajewski, J; Grzelak, G; Kasprzak, M; Krzyzanowski, M; Muchorowski, K; Nowak, R J; Pawlak, J M; Tymieniecka, T; Wróblewski, A K; Zakrzewski, J A; Zarnecki, A F; Adamus, M; Coldewey, C; Eisenberg, Y; Hochman, D; Karshon, U; Revel, D; Zer-Zion, D; Badgett, W F; Breitweg, J; Chapin, D; Cross, R; Dasu, S; Foudas, C; Loveless, R J; Mattingly, S E K; Reeder, D D; Silverstein, S; Smith, W H; Vaiciulis, A W; Wodarczyk, M; Bhadra, S; Cardy, M L; Frisken, W R; Khakzad, M; Schmidke, W B

    1996-01-01

    The reaction $\\gamma p \\rightarrow \\omega p$ $(\\omega \\rightarrow interactions using the \\mbox{ZEUS} detector at photon-proton centre-of-mass energies between $70$ and $90\\uni{GeV}$ and $|t| < 0.6\\uni{GeV}^2$, where $t$ is the squared four momentum transferred at the proton vertex. The elastic \\ome photoproduction cross section has been measured to be $\\sigma_{\\gamma cross section $d\\sigma_{\\gamma p\\rightarrow \\omega p} /d|t|$ has an exponential shape $\\mbox{e}^{-b |t|}$ with a slope $b = 10.0\\pm 1.2\\pm 1.3\\uni{GeV}^{-2}$. The angular distributions of the decay pions are consistent with {\\it s}-channel helicity conservation. When compared to low energy data, the features of $\\omega$ photoproduction as measured at HERA energies are in agreement with those of a soft diffractive process. Previous measurements of the $\\rho^0$ and $\\phi$ photoproduction cross sections at HERA show a similar behaviour.

  12. Coefficient Omega Bootstrap Confidence Intervals: Nonnormal Distributions

    Padilla, Miguel A.; Divers, Jasmin

    2013-01-01

    The performance of the normal theory bootstrap (NTB), the percentile bootstrap (PB), and the bias-corrected and accelerated (BCa) bootstrap confidence intervals (CIs) for coefficient omega was assessed through a Monte Carlo simulation under conditions not previously investigated. Of particular interests were nonnormal Likert-type and binary items.…

  13. Observation of eta ' -> omega e(+)e(-)

    Ablikim, M.; Achasov, M. N.; Ai, X.C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Haddadi, Z.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Loehner, H.; Messchendorp, J.G.; Tiemens, M.

    2015-01-01

    Based on a sample of eta' mesons produced in the radiative decay J/psi -> gamma eta' in 1.31 x 10(9) J/psi events collected with the BESIII detector, the decay eta' -> omega e(+)e(-) is observed for the first time, with a statistical significance of 8 sigma. The branching fraction is measured to be

  14. Cerenkov counters at the Omega Facility

    1975-01-01

    P. Petroff on the left. Here one sees both the gas Cerenkov counters sitting in front of the magnet to select forward emitted particles. The smaller one, working at high pressure, sits nearest to the Omega magnet (see photo 7505073X), the other (see photo 7505071X) works at atmospheric pressure.

  15. OMEGA: a 24 beam uv irradiation facility

    We report the recent completion of the uv upconversion (351 nm) of all 24 beams of the OMEGA laser which provides a unique short wavelength symmetrical irradiation facility for direct drive laser fusion experiments. Details of the characterization of illumination uniformity and initial implosion experiments will be described

  16. PROFIL ASAM LEMAK OMEGA-3, OMEGA-6, PERKEMBANGAN MENTAL DAN PSIKOMOTOR ANAK KEP BERAT DAN GIZI BAIK

    Astuti Lamid; Sri Muljati; Lies Karyadi; Komari Komari; Sri Murni Prastowo; Slamet Budiyanto

    2012-01-01

    The Profile of Omega-3 and Omega-6 Fatty Acids, Mental and Psychomotor Development of Severe Malnutrition and Well-Nourished Children.It has been carried out the study to find the profile of omega-3, omega-6, mental and psychomotor development of severe malnutrition and well-nourished children. This study was cross-sectional study conducted on children suffering from severe malnutrition at Nutrition Clinic, Nutrition Research and Development Center, Bogor and well-nourished children from the ...

  17. Omega-6 and omega-3 fatty acids predict accelerated decline of peripheral nerve function in older persons

    F. Lauretani; Bandinelli, S.; Benedetta, B.; Cherubini, A; Iorio, A. D.; Blè, A.; Giacomini, V.; Corsi, A. M.; Guralnik, J. M.; Ferrucci, L.

    2007-01-01

    Pre-clinical studies suggest that both omega-6 and omega-3 fatty acids have beneficial effects on peripheral nerve function. Rats feed a diet rich in polyunsaturated fatty acids (PUFAs) showed modification of phospholipid fatty acid composition in nerve membranes and improvement of sciatic nerve conduction velocity (NCV). We tested the hypothesis that baseline plasma omega-6 and omega-3 fatty acids levels predict accelerated decline of peripheral nerve function. Changes between baseline and t...

  18. Update on marine omega-3 fatty acids: management of dyslipidemia and current omega-3 treatment options.

    Weintraub, Howard

    2013-10-01

    Low-density lipoprotein cholesterol (LDL-C) is currently the primary target in the management of dyslipidemia, and statins are first-line pharmacologic interventions. Adjunct therapy such as niacins, fibrates, bile acid sequestrants, or cholesterol absorption inhibitors may be considered to help reduce cardiovascular risk. This review discusses the need for alternative adjunct treatment options and the potential place for omega-3 fatty acids as such. The cardiovascular benefits of fish consumption are attributed to the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and a variety of omega-3 fatty acid products are available with varied amounts of EPA and DHA. The product types include prescription drugs, food supplements, and medical foods sourced from fish, krill, algal and plant oils or purified from these oils. Two prescription omega-3 fatty acids are currently available, omega-3 fatty acid ethyl esters (contains both EPA and DHA ethyl esters), and icosapent ethyl (IPE; contains high-purity EPA ethyl ester). A pharmaceutical containing free fatty acid forms of omega-3 is currently in development. Omega-3 fatty acid formulations containing EPA and DHA have been shown to increase LDL-C levels while IPE has been shown to lower triglyceride levels without raising LDL-C levels, alone or in combination with statin therapy. In addition, recent studies have not been able to demonstrate reduced cardiovascular risk following treatment with fibrates, niacins, cholesterol absorption inhibitors, or omega-3 fatty acid formulations containing both EPA and DHA in statin-treated patients; thus, there remains a need for further cardiovascular outcomes studies for adjunct therapy. PMID:24075771

  19. Changes in plasma and erythrocyte omega-6 and omega-3 fatty acids in response to intravenous supply of omega-3 fatty acids in patients with hepatic colorectal metastases

    Al-Taan, Omer; Stephenson, James A; Spencer, Laura; Pollard, Cristina; West, Annette L.; Calder, Philip C.; Metcalfe, Matthew; Dennison, Ashley R

    2013-01-01

    Background Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are functionally the most important omega-3 polyunsaturated fatty acids (PUFAs). Oral supply of these fatty acids increases their levels in plasma and cell membranes, often at the expense of the omega-6 PUFAs arachidonic acid (ARA) and linoleic acid. This results in an altered pattern of lipid mediator production to one which is less pro-inflammatory. We investigated whether short term intravenous supply of omega-3 PUFAs co...

  20. Variación de la peroxidación lipídica según la composición de ácidos grasos de microsomas hepáticos de aves

    Lozano, M C; Iglesias, B.; Leaden, P.; Marmunti, Monica Edith; Palacios, Alejandro; Piergiacomi, V.

    2006-01-01

    En este trabajo se estudió la composición de ácidos grasos de microsomas hepáticos de pato, codorniz y pollo y se analizó su comportamiento durante la peroxidación lipídica. La composición de ácidos grasos varió entre las diferentes especies, los microsomas de pato presentaron mayor contenido de ácidos grasos polinosaturados, principalmente ácidos araquidónico (C20:4 n6) y docosahexahenóico (C22:6 n3), mientras que en codornices y pollos el contenido de ácido palmitoléico (C16:1 n7) y ácido o...

  1. Production and Decay of Omega_c^0

    Aubert, B; Abrams, G S; Adye, T; Ahmed, S; Alam, M S; Albert, J; Aleksan, R; Allen, M T; Allison, J; Altenburg, D D; Anderson, J; Andreotti, M; Angelini, C; Anulli, F; Arnaud, N; Asgeirsson, D J; Aston, D; Azzolini, V; Baak, M A; Back, J J; Baldini-Ferroli, R; Band, H R; Banerjee, Sw; Baracchini, E; Bard, D J; Barlow, N R; Barlow, R J; Bartoldus, R; Batignani, G; Battaglia, M; Bauer, J M; Bechtle, P; Beck, T W; Behera, P K; Bellini, F; Ben-Haim, E; Benelli, G; Bequilleux, J; Berger, N; Bernard, D; Berryhill, J W; Bettarini, S; Bettoni, D; Bevan, A J; Bhuyan, B; Bianchi, F; Biasini, M; Biesiada, J; Blanc, F; Blaylock, G; Blinov, V E; Bloom, P C; Blount, N L; Bomben, M; Bondioli, M; Bonneaud, G R; Bosisio, L; Boutigny, D; Bozzi, C; Brandt, T; Brau, J E; Briand, H; Brown, D N; Brunet, S; Buchanan, C; Bugg, W; Bukin, A D; Bula, R; Burchat, P R; Button-Shafer, J; Buzzo, A; Bóna, M; Cahn, R N; Calabrese, R; Calcaterra, A; Calderini, G; Campagnari, C; Carpinelli, M; Cartaro, C; Castelli, G; Cavoto, G; Cecchi, A; Cenci, R; Cervelli, A; Chai, X; Chaisanguanthum, K S; Charles, M J; Chauveau, J; Chavez, C A; Chen, C; Chen, E; Chen, S; Chen, X; Chen, X R; Cheng, C H; Chia, Y M; Cibinetto, G; Clark, P J; Claus, R; Cochran, J; Coleman, J P; Contri, R; Convery, M R; Corwin, L A; Cossutti, F; Cottingham, W N; Covarelli, R; Cowan, G; Cowan, R; Crawley, H B; Cremaldi, L; Cunha, A; Curry, S; Côté, D; D'Orazio, A; Dahmes, B; Dallapiccola, C; Dasu, S; Dauncey, P D; David, P; Davier, M; Davis, C L; De Nardo, Gallieno; De Sangro, R; Del Amo-Sánchez, P; Del Buono, L; Del Re, D; Della Ricca, G; Denig, A G; Di Lodovico, F; Di Marco, E; Dingfelder, J C; Dong, L; Dorfan, J; Druzhinin, V P; Dubitzky, R S; Dubois-Felsmann, G P; Dujmic, D; Dunwoodie, W; Dvoretskii, A; Ebert, M; Eckmann, R; Edgar, C L; Edwards, A J; Eigen, G; Eisner, A M; Elmer, P; Emery, S; Ernst, J A; Escalier, M; Eschenburg, V; Eschrich, I; Eyges, V; Fabozzi, F; Faccini, R; Fang, F; Feltresi, E; Ferrarotto, F; Ferroni, F; Field, R C; Finocchiaro, G; Fisher, P H; Flacco, C J; Flack, R L; Flächer, H U; Flood, K T; Ford, W T; Forster, I J; Forti, F; Foulkes, S D; Franchini, P; Franek, B; Frey, R; Fritsch, M; Fry, J R; Fulsom, B G; Gabareen, A M; Gabathuler, E; Gagliardi, N; Gaidot, A; Gallo, F; Gamba, D; Gamet, R; Gan, K K; Ganzhur, S F; Garra Tico, J; Gary, J W; Gaspero, M; Gaz, A; George, K A; Giorgi, M A; Gladney, L; Glanzman, T; Godang, R; Golubev, V B; Gowdy, S J; Gradl, W; Graham, M T; Graugès-Pous, E; Grenier, P; Gritsan, A V; Grosdidier, G; Groysman, Y; Guo, Z J; Haire, M; Hamano, K; Hamel de Monchenault, G; Hamon, O; Harrison, P F; Hartfiel, B L; Hast, C; Hauke, A; Hawkes, C M; Hearty, C; Held, T; Hertzbach, S S; Heusch, C A; Hirschauer, J F; Hitlin, D G; Hollar, J J; Hong, T M; Honscheid, K; Hopkins, D A; Hrynóva, T; Hufnagel, D; Hutchcroft, D E; Höcker, A; Igonkina, O; Innes, W R; Izen, J M; Jackson, P D; Jackson, P S; Jacobsen, R G; Jain, V; Jasper, H; Jawahery, A; Jessop, C P; Kadyk, J A; Kagan, H; Karyotakis, Yu; Kass, R; Kelsey, M H; Kerth, L T; Khan, A; Kim, H; Kim, P; Kirkby, D; Klose, V; Knecht, N S; Koch, H; Kolb, J A; Kolomensky, Yu G; Kovalskyi, D; Kowalewski, R V; Kozanecki, W; Kreisel, A; Krishnamurthy, M; Kroeger, R; Kroseberg, J; Kukartsev, G; Kutter, P E; La Vaissière, C de; Lacker, H M; Lae, C K; Lafferty, G D; Lanceri, L; Lange, D J; Lankford, A J; Latham, T E; Latour, E; Lau, Y P; Lazzaro, A; Le Diberder, F R; Lees, J P; Legendre, M; Leith, D W G S; Lepeltier, V; Leruste, P; Lewandowski, B; Li Gioi, L; Li, S; Li, X; Lista, L; Liu, F; Liu, H; Lo Vetere, M; LoSecco, J M; Lockman, W S; Lombardo, V; Long, O; Lopes-Pegna, D; Lopez-March, N; Lou, X C; Lu, M; Luitz, S; Lund, P; Luppi, E; Lusiani, A; Lutz, A M; Lynch, G; Lynch, H L; López, L; Lü, C; Lüth, V; MacFarlane, D B; Macri, M M; Mader, W F; Majewski, S A; Malcles, J; Mallik, U; Mancinelli, G; Mandelkern, M A; Manoni, E; Marchiori, G; Margoni, M; Marks, J; Marsiske, H; Martin, E C; Martínez-Vidal, F; Mattison, T S; Mazur, M A; Mazzoni, M A; McKenna, J A; McMahon, T R; Mclachlin, S E; Meadows, B T; Menges, W; Merkel, J; Messner, R; Meyer, N T; Meyer, W T; Milanes, D A; Mir, L M; Mishra, K; Mohanty, G B; Monge, M R; Monorchio, D; Moore, T B; Morandin, M; Morganti, M; Morganti, S; Morii, M; Morris, J P; Muheim, F; Müller, D R; Nagel, M; Narsky, I; Nash, J A; Nauenberg, U; Neal, H; Negrini, M; Neri, N; Nicholson, H; Nikolich, M B; Nogowski, R; Nugent, I M; O'Grady, C P; Ocariz, J; Ofte, I; Olaiya, E O; Olivas, A; Olsen, J; Onuchin, A P; Orimoto, T J; Oyanguren, A; Paar, H P; Pacetti, S; Palano, A; Palombo, F; Pan, B; Pan, Y; Panduro-Vazquez, W; Paoloni, E; Pappagallo, M; Park, W; Passaggio, S; Patel, P M; Patrignani, C; Patteri, P; Payne, D J; Pelizaeus, M; Pelliccioni, M; Perazzo, A; Perl, M; Peruzzi, I M; Petersen, B A; Petrella, A; Petzold, A; Piatenko, T; Piccolo, M; Piemontese, L; Pierini, M; Piredda, G; Playfer, S; Poireau, V; Polci, F; Pompili, A; Porter, F C; Posocco, M; Prell, S; Prencipe, E; Prepost, R; Pripstein, M; Prudent, X; Pruvot, S; Pulliam, T; Purohit, M V; Pérez, A; Rahatlou, S; Rahimi, A M; Rahmat, R; Rama, M; Ratcliff, B N; Raven, G; Regensburger, J J; Renga, F; Ricciardi, S; Richman, J D; Ritchie, J L; Rizzo, G; Roberts, D A; Robertson, A I; Robertson, S H; Robutti, E; Rodier, S; Roe, N A; Ronan, M T; Roney, J M; Roodman, A; Rosenberg, E I; Rotondo, M; Roudeau, P; Rubin, A E; Ruland, A M; Röthel, W; Sacco, R; Saeed, M A; Saleem, M; Salnikov, A A; Salvati, E; Salvatore, F; Sanders, D A; Santoro, V; Santroni, A; Saremi, S; Schalk, T; Schenk, S; Schilling, C J; Schindler, R H; Schofield, K C; Schott, G; Schröder, T; Schröder, H; Schubert, J; Schubert, K R; Schumm, B A; Schune, M H; Schwiening, J; Schwierz, R; Schwitters, R F; Sciacca, C; Sciolla, G; Seiden, A; Sekula, S J; Serednyakov, S I; Serrano, J; Sharma, V; Shen, B C; Simard, M; Simi, G; Simonetto, F; Sinev, N B; Skovpen, Yu I; Smith, A J S; Smith, J G; Snoek, H L; Snyder, A; Sobie, R J; Soffer, A; Sokoloff, M D; Solodov, E P; Sordini, V; Spaan, B; Spanier, S M; Spitznagel, M; Steinke, M; Stelzer, J; Stocchi, A; Stoker, D P; Stroili, R; Strom, D; Strube, J; Stugu, B; Su, D; Sullivan, M K; Summers, D J; Sun, L; Sundermann, J E; Suzuki, K; Swain, S K; Tackmann, K; Taras, P; Taylor, F; Telnov, A V; Teodorescu, L; Ter-Antonian, R; Thiebaux, C; Thompson, J M; Tisserand, V; Todyshev, K Yu; Toki, W H; Torrence, E; Tosi, S; Touramanis, C; Tuggle, J M; Ulmer, K A; Uwer, U; Van Bakel, N; Vasseur, G; Vavra, J; Verderi, M; Viaud, F B; Vitale, L; Voci, C; Voena, C; Volk, A; Wacker, K; Wagner, A P; Wagner, S R; Waldi, R; Walker, D; Walsh, J J; Wang, W F; Wappler, F R; Watson, A T; Weaver, M; Wenzel, W A; West, T J; Wilden, L; Williams, D C; Wilson, F F; Wilson, J R; Wilson, M G; Wilson, R J; Winklmeier, F; Winstrom, L O; Wisniewski, W J; Wittgen, M; Wong, Q K; Wormser, G; Wren, A C; Wright, D H; Wright, D M; Wu, J; Wu, S L; Xie, Y; Yamamoto, R K; Yarritu, A K; Ye, S; Yi, J I; Yi, K; Young, C C; Yu, Z; Yéche, C; Zain, S B; Zallo, A; Zeng, Q; Zghiche, A; Zhang, J; Zhang, L; Zhao, H W; Ziegler, V; Zito, M; Çuhadar-Dönszelmann, T; al, et

    2007-01-01

    We present an analysis of inclusive Omega_c^0 baryon production and decays in 230.5 fb^-1 of data recorded with the BABAR detector at the PEP-II asymmetric-energy e+ e- collider at the Stanford Linear Accelerator Center. Omega_c^0 baryons are reconstructed in four final states (Omega- pi+, Omega- pi+ pi0, Omega- pi+ pi+ pi-, Xi- K- pi+ pi+) and the ratios of branching fractions for these final states are measured. We also measure the momentum spectrum of the Omega_c^0 baryons in the e+ e- center-of-mass frame. From the spectrum, we observe Omega_c^0 production from B decays and in ccbar events, and extract the two rates of production.

  2. Efecto de la alimentación en el perfil lipídico de ácidos grasos del tejido subcutáneo de terneros frisones

    Pau Rodríguez, Vanessa

    2013-01-01

    La reciente preocupación por la relación salud humana y dieta ha ocasionado que cada vez más, el consumidor seleccione cuidadosamente aquello que consume; por ello, los atributos que se le otorgaban a la carne de vacuno han ido reemplazándose por la creencia de que es una carne rica en ácidos grasos saturados (AGS), los cuales poseen un efecto hipercolesterolémico (Keys et al.1965; Hegsted et al., 1965). Por todo esto cada vez se realizan mayores estudios en relación a la modificación de los ...

  3. Efecto de la dieta en la composición de ácidos grasos en muestras de corderos de raza navarra de tipo ternasco

    Solaun Fernández, Itziar

    2010-01-01

    Actualmente, hay una disminución del consumo de la carne de cordero, por su alto contenido en ácidos grasos saturados, debido a la preocupación social por la salud, y a las recomendaciones por la Organización Mundial de la Salud que aconsejan un menor consumo de grasas saturadas. Estas grasas suponen un mayor riesgo de obesidad, cáncer y enfermedades cardiovasculares. Ante esta problemática social, se plantean estrategias alimentarias en los rumiantes, por las cuales se pretend...

  4. TASAS DE CONCEPCIÓN, FERTILIDAD Y PROLIFICIDAD EN OVEJAS DE PELO ALIMENTADAS CON DIETAS ENRIQUECIDAS CON ÁCIDOS GRASOS POLIINSATURADOS

    G Cansino-Arroyo; J Herrera-Camacho; JR Aké-López

    2009-01-01

    Las tasas de concepción, de fertilidad y prolificidad fueron evaluadas en ovejas de pelo distribuidas al azar en: un grupo testigo que recibió 800 g MS de un concentrado comercial, un grupo melaza (n = 51) alimentado con 717.6 g MS del concentrado comercial + 80.25 g MS de melaza y un grupo aceite (n = 85) mantenido con 726.8 del concentrado comercial + 30.0 g de aceite de maíz como fuente de ácidos grasos poliinsaturados. Las tasas de concepción y fertilidad fueron similares entre los tratam...

  5. Cambios en el perfil de ácidos grasos de filete de tilapia nilótica Oreochromis niloticus en respuesta a diferentes fuentes lipídicas

    Moreno Poveda, Jenny Marcela

    2013-01-01

    Con el objetivo de modificar el perfil de ácidos grasos (AG) en el filete de tilapia nilótica (Oreochromis niloticus), se fabricaron cuatro dietas con: aceite de pescado (AP), aceite de palma (APL), semilla de chía (SC) o semilla de lino (SL). El experimento fue realizado durante 45 días en la represa de Betania (Huila), en 20 jaulas flotantes, cada una con 504 peces de 557±16,87g, distribuidos bajo un diseño completamente al azar. Al finalizar el periodo experimental fueron muestreados 21 pe...

  6. Relación entre los ácidos grasos en suero y en los fosfolípidos de membrana en niños sanos

    E. Cortés Castell

    2013-10-01

    Full Text Available Introducción: La dieta es importante para el suministro de ácidos grasos del hombre, en especial los de las familias n-3 y n-6, por su esencialidad y las amplias funciones fisiológicas relacionadas. Es importante tener valores de referencia en las muestras biológicas accesibles, tales como suero y membranas eritrocitarias, con el fin de paliar posibles déficit. El objetivo del presente trabajo consiste en cuantificar los ácidos grasos esenciales (AGE presentes en dichas muestras, desde la C6 hasta la C26. Material y métodos: Se han efectuado las determinaciones de los ácidos grasos de 30 niños sanos en suero y en sus correspondientes fosfolípidos de membrana de células sanguíneas, mediante su extracción lipídica, metilación, separación y cuantificación en cromatografía de gases con detección de masas. Se han comparado los valores obtenidos en cada suero y su pareja de membranas celulares. Resultados y discusión: Se han obtenido los valores normales en niños sanos. El C16, que supone la cuarta parte de todos los ácidos grasos, está en la misma proporción en ambas muestras; entre el resto, no se encuentra una correspondencia clara entre ambos valores. Entre los n-6, el C18:2n6 está en mayor proporción en suero, frente al C20:4n6 que lo está en los fosfolípidos. De igual forma, entre los n-3, el C20:5n3 está en mayor proporción en suero y el C22:6n3 lo está en fosfolípidos de membrana. Dichos valores son la causa de procesos distintos, aporte nutricional reciente para el suero y con implicaciones a largo plazo y metabólicas los valores en los fosfolípidos de las membranas.

  7. Uso de ácidos grasos en la prevención de úlceras por presión y de extremidad inferior

    Juan Carlos Restrepo Medrano; Juan Guillermo Rojas; Manuel Alejandro Granada Gómez

    2015-01-01

    Objetivo: Analizar la literatura científica acerca del uso y la efectividad de los ácidos grasos hiperoxigenados y las actuaciones de los profesionales de enfermería en la prevención y tratamiento de úlceras por presión y heridas crónicas. Metodología: Se llevó a cabo una revisión bibliográfica de la literatura en las principales bases de datos de las ciencias de la salud y las ciencias sociales (MEDLINE-PUBMED, CINHAL, WEB OF SCIENCE, LILACS, SOCIOLOGICAL ABSTRACTS, CUIDEN, EMBASE, PSYCOINFO...

  8. Biodiésel de ésteres etílicos de ácidos grasos : correlación composición-propiedades

    Alonso Castro, Elena

    2014-01-01

    Debido a la situación energética actual, el aumento de la demanda de petróleo y precio, así como su carácter no renovable, hace necesaria la búsqueda de alternativas viables para su uso como combustible. Una de ellas es el biodiésel, ya que tiene características similares y puede ser usado como sustituto de los combustibles convencionales, sin necesidad de grandes modificaciones en el motor. Hasta ahora los estudios se habían centrado en los esteres metílicos de ácidos grasos (FAMEs) por razo...

  9. Consumo de fructosa y sus implicaciones para la salud: malabsorción de fructosa e hígado graso no alcohólico

    María Jesús Riveros; Alejandra Parada; Paulina Pettinelli

    2014-01-01

    La ingesta de fructosa se ha incrementado considerablemente en los últimos años, especialmente bajo la forma de jarabe de maíz alto en fructosa, debido a su gran poder edulcorante. Diversos estudios, han asociado su elevado consumo con alteraciones metabólicas, hígado graso no alcohólico y malabsorción de fructosa, entre otras patologías. Esta revisión tiene como objetivo actualizar acerca del efecto de la alta ingesta de fructosa en el hígado e intestino, asociada principalmente a alimentos ...

  10. Ensayo y funcionalidad de un sustituyente de sólidos no grasos lácteos en una mezcla para helado.

    López Barón, Francy Nataly; Sepúlveda Valencia, José Uriel; Restrepo Molina, Diego Alonso

    2011-01-01

    Este estudio tuvo como objeto ensayar y evaluar la influencia de dos formulaciones de sólidos no grasos lácteos (F1 y F2), sobre las características fisicoquímicas de mezclas de helado. Mediante criterios bromatológicos (contenido de proteína) se seleccionó la formulación F1, ya que una prueba sensorial que se aplicó simultáneamente, no aportó diferencias entre ambas formulaciones. Posteriormente se usaron tres niveles de la mezcla escogida, sustituyendo 20% (T2), el 40% (T3) y el 60% (T4), d...

  11. Análisis de las funciones específicas de las proteínas que unen ácidos grasos (FABPs) de intestino

    Rodriguez Sawicki, Luciana

    2015-01-01

    En el enterocito intestinal de mamíferos se expresan elevadas concentraciones de dos proteínas que unen ácidos grasos (FABPs): FABP intestinal (IFABP) y hepática (LFABP). Las células de intestino metabolizan una gran cantidad de lípidos dietarios y, por lo tanto, el estudio de proteínas que participan en el procesamiento de los mismos es clave para la comprensión detallada de los procesos fisiológicos y patológicos vinculados con estos compuestos. I- y LFABP poseen una estructura terciari...

  12. Análisis de la interacción de proteínas que unen ácidos grasos con membranas

    De Gerónimo, Eduardo

    2011-01-01

    Las proteínas que unen ácidos grasos de intestino (IFABP) e hígado (LFABP), son proteínas homólogas que se coexpresan en altos niveles en el citosol de células del epitelio intestinal. Ambas proteínas poseen una estructura típica que consta de 10 cadenas beta antiparalelas empaquetadas formando un barril beta levemente elíptico y dos segmentos alfa-helicoidales cortos que formarían parte de un pequeño portal en la parte superior del barril. Pese a que estas dos proteínas presentan una estruct...

  13. Efecto de los ácidos grasos hiperoxigenados en la microcirculación de pacientes con pie diabético

    Sánchez Ríos, Juan Pedro

    2008-01-01

    La Diabetes Mellitus es una pandemia mundial. Actualmente se estima que la prevalencia de la Diabetes en el mundo es del 4.5%. Aproximadamente el 15% de los diabéticos desarrollarán una úlcera en el pie a lo largo de su vida. En la prevención y tratamiento de úlceras en Pie Diabético es importante también considerar, la integridad física y funcional de la piel del paciente para que pueda ejercer su acción protectora ante agresiones externas. Los ácidos grasos hiperoxigenados (AGHO) s...

  14. Ácidos grasos trans en la nutrición de niños con trastornos neurológicos

    Cortés Castell, Ernesto; Aguilar Cordero, María José; Rizo Baeza, María Mercedes; Gil Guillén, Vicente; Hidalgo Navarro, María José

    2013-01-01

    Introducción: Los ácidos grasos trans (AGT) están presentes en diversos alimentos, y son la única fuente de los mismos en humanos. Su presencia en concentraciones elevadas supone un factor de riesgo para la salud, por lo que se ven implicados en toda una serie de eventos cardiovasculares, inflamatorios, etc. Por ello, se han adoptado medidas para su disminución en la dieta. Como objetivo, se pretende determinarlos en el suero y en los fosfolípidos de las membranas, tanto en los niños sanos, c...

  15. Caracterización geográfica de los aceites de oliva vírgenes de la denominación de origen protegida ’Les Garrigues’ por su perfil de ácidos grasos

    Motilva Casado, Mª José; Ramo Aparicio, Tomás; Romero Fabregat, Mª Paz

    2001-01-01

    Se ha analizado el perfil de ácidos grasos en 190 muestras de aceite de oliva virgen de la DOP Les Garrigues (Lleida) de tres campañas consecutivas (1995/96, 1996/97 y 1997/98). Se ha encontrado que la mayor variabilidad entre los ácidos grasos es debida a aspectos relacionados con la climatología de la campaña oleícola y con la procedencia de los aceites. El análisis de componentes principales ha permitido obtener dos componentes principales que explican más del 80 % de la variabilidad obser...

  16. Perfil de ácidos grasos de mero (Epinephelus morio) crudo yprocesado en aceite capturado en la península de Yucatán, México

    Maira Segura-Campos; Gisela González-Barrios; Pablo Acereto-Escoffié; Gabriel Rosado-Rubio; Luis Chel-Guerrero; David Betancur-Ancona

    2015-01-01

    Los ácidos grasos insaturados son de interés en la actualidad por su potencial para reducir enfermedades cardiovasculares, primera causa de muerte en el mundo. Por su contenido de ácidos grasos esenciales, el pescado es uno de los productos alimenticios de mayor demanda entre la población. Uno de los procesos más populares para el consumo de pescado en la Península de Yucatán, México es la fritura. Sin embargo, estudios demuestran que la fritura de alimentos genera cambios en la composición d...

  17. Predicción del número de cetano de biocombustibles a partir de su composición de ácidos grasos//Cetane number estimation of biofuels from their fatty acid composition

    Yisel Sánchez-Borroto; Ramón Piloto-Rodríguez; Leonardo Goyos-Pérez; Nayvi Ferrer-Frontela

    2012-01-01

    El número de cetano (CN) es una de las propiedades más importantes para evaluar la calidad del proceso de combustión de un combustible tipo diesel. El CN de biocombustibles derivados de aceites vegetales está influenciado por su composición de ácidos grasos. El objetivo de esta investigación es obtener dos modelos físico-matemáticos que establezcan una relación entre el número de cetano de biocombustibles derivados de aceites vegetales y su composición de ácidos grasos esenciales. Para predec...

  18. Funcionalidad y recomendaciones nutricionales de ácidos grasos esenciales y sus derivados en la alimentación del lactante a partir de los 6 meses de edad

    Matencio Hilla, E.; Abellán Ballesta, Pedro; Romero Braquehais, Fernando

    2012-01-01

    Los requerimientos de ácidos grasos esenciales (AGEs) y ácidos grasos poliinsaturados de cadena larga (AGPI-CL) durante los últimos meses de gestación y los primeros años de vida son importantes de acuerdo al crecimiento y desarrollo neuronal que está teniendo lugar durante este periodo de vida. El objetivo de este trabajo ha sido destacar la importancia de garantizar un correcta ingesta de AGEs para cubrir los requerimientos nutricionales de estos, a través de la ingesta de alimentos que...

  19. Refined Cigar and Omega-deformed Conifold

    Nakayama, Yu

    2010-01-01

    Antoniadis et al proposed a relation between the Omega-deformation and refined correlation functions of the topological string theory. We investigate the proposal for the deformed conifold geometry from a non-compact Gepner model approach. The topological string theory on the deformed conifold has a dual description in terms of the c=1 non-critical string theory at the self-dual radius, and the Omega-deformation yields the radius deformation. We show that the refined correlation functions computed from the twisted SL(2,R)/U(1) Kazama-Suzuki coset model at level k=1 have direct c=1 non-critical string theory interpretations. After subtracting the leading singularity to procure the 1PI effective action, we obtain the agreement with the proposal.

  20. Torsion and Supersymmetry in Omega-background

    Ito, Katsushi; Sasaki, Shin

    2012-01-01

    We study the dimensional reduction of ten-dimensional super Yang-Mills theory in curved backgrounds with torsion. We examine the parallel spinor conditions and the constraints for the torsion parameters which preserve supersymmetry and gauge symmetry in four dimensions. In particular we examine the ten-dimensional Omega-background with the torsion which is identified with the R-symmetry Wilson line gauge fields. After the dimensional reduction, we obtain the Omega-deformed N=4 super Yang-Mills theory. Solving the parallel spinor conditions and the torsion constraints, we classify the deformed supersymmetry associated with the topological twist of N=4 supersymmetry. We also study deformed supersymmetries in the Nekrasov-Shatashvili limit.

  1. Superconducting RF separator for Omega Spectrometer

    1977-01-01

    The photo shows an Nb-deflector for the superconducting RF separator ready for installation in its cryostat (visible at the back). Each deflector was about 3 m long. L. Husson and P. Skacel (Karlsruhe) stand on the left, A. Scharding (CERN) stands on the right. This particle separator, the result of a collaboration between the Gesellshaft für Kernforschung, Karlsruhe, and CERN was installed in the S1 beam line to Omega spectrometer. (See Annual Report 1977.)

  2. OMEGA FY13 HED requests - LANL

    Workman, Jonathan B [Los Alamos National Laboratory; Loomis, Eric N [Los Alamos National Laboratory

    2012-06-25

    This is a summary of scientific work to be performed on the OMEGA laser system located at the Laboratory for Laser Energetics in Rochester New York. The work is funded through Science and ICF Campagins and falls under the category of laser-driven High-Energy Density Physics experiments. This summary is presented to the Rochester scheduling committee on an annual basis for scheduling and planning purposes.

  3. The Joint Dark Energy Mission (JDEM) Omega

    Gehrels, Neil

    2010-01-01

    [JDEM-Omega is one of the three concepts that contributed to the Wide-Field Infrared Survey Telescope (WFIRST) mission advocated by the Astro2010 Decadal Survey. It is the concept on which the recommended observatory configuration is based.] The Joint Dark Energy Mission (JDEM) is a space-based observatory designed to perform precision measurements of the nature of dark energy in the Universe. It will make an order of magnitude progress in measuring the equation of state parameters of the Universe of most importance for understanding dark energy. JDEM-Omega is a wide-field space telescope operating in the near infrared. Dark energy measurements will be made via large surveys of galaxies and supernova monitoring. These will be an order of magnitude larger surveys than currently available and will provide enormous catalogs of astrophysical objects for many communities ranging from solar system to galaxy to galaxies/clusters to cosmology. JDEM-Omega is a mission concept collaboratively developed by NASA and the ...

  4. Semileptonic Decays of Heavy Omega Baryons in a Quark Model

    Muslema Pervin; Winston Roberts; Simon Capstick

    2006-03-24

    The semileptonic decays of {Omega}{sub c} and {Omega}{sub b} are treated in the framework of a constituent quark model developed in a previous paper on the semileptonic decays of heavy {Lambda} baryons. Analytic results for the form factors for the decays to ground states and a number of excited states are evaluated. For {Omega}{sub b} to {Omega}{sub c} the form factors obtained are shown to satisfy the relations predicted at leading order in the heavy-quark effective theory at the non-recoil point. A modified fit of nonrelativistic and semirelativistic Hamiltonians generates configuration-mixed baryon wave functions from the known masses and the measured {Lambda}{sub c}{sup +} {yields} {Lambda}e{sup +}{nu} rate, with wave functions expanded in both harmonic oscillator and Sturmian bases. Decay rates of {Omega}{sub b} to pairs of ground and excited {Omega}{sub c} states related by heavy-quark symmetry calculated using these configuration-mixed wave functions are in the ratios expected from heavy-quark effective theory, to a good approximation. Our predictions for the semileptonic elastic branching fraction of {Omega}{sub Q} vary minimally within the models we use. We obtain an average value of (84 {+-} 2%) for the fraction of {Omega}{sub c} {yields} {Xi}{sup (*)} decays to ground states, and 91% for the fraction of {Omega}{sub c} {yields} {Omega}{sup (*)} decays to the ground state {Omega}. The elastic fraction of {Omega}{sub b} {yields} {Omega}{sub c} ranges from about 50% calculated with the two harmonic-oscillator models, to about 67% calculated with the two Sturmian models.

  5. Composición en ácidos grasos de la fracción lipídica del tocosh de maíz

    Durand, Z. Honorio

    1994-12-01

    Full Text Available Corn's tocosh is a food consumed by children and adults in the andine region of Callejón de Huaylas in Peru, Germination and fermentation phenomena produced during its elaboration contribute to modify the chemical composition of the original corn; that is the case of the fatty acids in the lipidic fraction.
    The analytical data of the corn's tocosh, show the presence of trans isomers in non significant amount, an increase in linoleic acid related to the time of fermentation, and the presence of gamma linolenic acid.

    El tocosh de maíz es un alimento consumido por adultos y niños de la región andina del Callejón de Huaylas del Perú.
    Los fenómenos de germinación y fermentación que se producen durante su elaboración aseguran cambios en la composición química del maíz original; tal es el caso de los ácidos grasos de la fracción lipídica.
    Los resultados del análisis del tocosh de maíz, muestran la presencia de isómeros trans en cantidades no significativas, un incremento del ácido graso esencial linoleico en función del tiempo de fermentación y la presencia del ácido gamma linolénico.

  6. l aceite de atún como fuente de ácidos grasos ω-3 en el huevo de gallina

    Vázquez-Valladolid, J. L.; Castillo-Badillo, C.; González-Alcorta, M.; Morales-Barrera, E.; Castillo-Domínguez, R. M.; Carrillo-Domínguez, S.

    2005-01-01

    Fish oils are a source of polyunsaturated omega 3 fatty acids (AG ω3), mainly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which supply many benefits to human health. Tuna oil was used as a source of marine 3ω FA to enrich eggs by supplementing the diet of egg-laying hens with tuna oil. One hundred and twenty White Leghorn hens of 90 weeks old were allocated on three treatments with four replicates each, on a completely random design. Treatments consisted of adding 1 % and 2 %...

  7. Omega-6 and omega-3 fatty acids predict accelerated decline of peripheral nerve function in older persons.

    Lauretani, F; Bandinelli, S; Bartali, B; Benedetta, B; Cherubini, A; Iorio, A D; Blè, A; Giacomini, V; Corsi, A M; Guralnik, J M; Ferrucci, L

    2007-07-01

    Pre-clinical studies suggest that both omega-6 and omega-3 fatty acids have beneficial effects on peripheral nerve function. Rats feed a diet rich in polyunsaturated fatty acids (PUFAs) showed modification of phospholipid fatty acid composition in nerve membranes and improvement of sciatic nerve conduction velocity (NCV). We tested the hypothesis that baseline plasma omega-6 and omega-3 fatty acids levels predict accelerated decline of peripheral nerve function. Changes between baseline and the 3-year follow-up in peripheral nerve function was assessed by standard surface ENG of the right peroneal nerve in 384 male and 443 female participants of the InCHIANTI study (age range: 24-97 years). Plasma concentrations of selected fatty acids assessed at baseline by gas chromatography. Independent of confounders, plasma omega-6 fatty acids and linoleic acid were significantly correlated with peroneal NCV at enrollment. Lower plasma PUFA, omega-6 fatty acids, linoleic acid, ratio omega-6/omega-3, arachidonic acid and docosahexanoic acid levels were significantly predicted a steeper decline in nerve function parameters over the 3-year follow-up. Low plasma omega-6 and omega-3 fatty acids levels were associated with accelerated decline of peripheral nerve function with aging. PMID:17594339

  8. Pengaruh Pemberian Omega-3, Omega-6, dan Kolesterol Sintetis terhadap Kualitas Reproduksi Burung Puyuh Jantan

    Wiwi Isnaeni

    2011-03-01

    Full Text Available The aims of this research were to study the effect of using the omega-3 (O-3, omega-6(O-6, and synthetic cholesterol (Ch on the reproductive quality of the male quails.Samples of this research were 35 of 4 weeks old male quails with 60 to 98 g of weight.The samples were grouped randomly into 7 groups, that are R-0 (control-group, R-1(0,163 mg O-3/100 g body weight, R-2 (0,326 mg O-3/100 g bw, R-3 (0,163 mgO-6/100 gbw, R-4 (0,326 mg O6/100 g bw, R-5 (20 mg Ch/100 g bw, and R-6 (40mg Ch/100 g bw. The treatment was given per oral in three periods with 5 days ofeach. there was a week intervening between periods. During the research, samples weregifted rations a basalic-woof (basalic-feed for twice/day, at 7:00 and 16:00 o’clock. theamount of basalic-woof were 20 g of feed/100 g body weight/day. Water administeredin an ad libitum manner. This research was implemented during 8 weeks. The variableswere the level of testosterone, blood qualities, voice-qualities, color brightness of chestfur, and testis size. The voice quality data were analyzed by one-way ANOVA continuedby orthogonal contrast test. The other data were analyzed by descriptive statistic. Theresult of this research confi rmed that synthetic omega-3 and omega-6 (0,326 mg/100 gbw and synthetic cholesterol (20 mg/100 g bw could increase the reproductive qualityof the male quails.Keywords: synthetic cholesterol, synthetic omega-3, synthetic omega-6,reproductive quality

  9. Obtención de concentrados de ácidos grasos poliinsaturados por el método de los compuestos de inclusión de urea

    Robles Medina, A.

    1995-06-01

    Full Text Available A concentration process for polyunsaturated fatty acids (PUFAs n-3 stearidonic (18:4 n-3, eicosapentaenoic (20:5 n-3 and docosahexaenoic (22:6 n-3 from cod liver oil using urea method has been thoroughly studied. The influence of urea/fatty acid ratio and crystallization temperature have been studied on both fatty acids recovery yield and fatty acid concentration. Methanol and ethanol have been used as urea solvent. The use of methanol and an urea/fatty acid ratio of 4:1, and 4°C were found to be the best conditions for SA (concentration 8,5%, yield 71,6 and DHA (59,8% and 100%, respectively. However, 28ºC was found to be the best temperature for EPA (28,7% and 75,6%, respectively. At temperatures below -12ºC, PUFAs also developed adducts compounds, mainly adducts derived from EPA. A variance analysis showed the urea/fatty acid ratio as the main factor affecting fatty acid concentration. At the same time, high urea/fatty acid ratios resulted in increased influence of the solvent used, being more favorable for methanol.

    En este trabajo se estudia la influencia de la relación urea/ácidos grasos y de la temperatura de cristalización (con metanol y etanol como disolventes de la urea sobre las concentraciones y rendimientos en los ácidos grasos estearidónico (SA, 18:4n-3, eicosapentaenoico (EPA, 20:5n-3 y docosahexaenoico (DHA, 22:6n-3, utilizando ácidos grasos de aceite de hígado de bacalao. Las máximas concentraciones y rendimientos en SA (8,5% y 71,6%, respectivamente y en DHA (59,8% y 100% se han obtenido con metanol, una relación urea/ácidos grasos 4:1 p/p y 4°C; sin embargo, si se desean obtener altas concentraciones y rendimientos en EPA es preferible cristalizar a 28ºC (rendimiento 76%, concentración 29%. A temperaturas por debajo de -12°C también los PUFAs forman compuestos de inclusión en un porcentaje elevado, sobre todo el EPA. Mediante un análisis de la varianza se ha puesto de manifiesto que la variable con

  10. On Stability Problems of Omega and 3-Disjoint Paths Omega Multi-stage Interconnection Networks

    Rastogi, Ravi; Chauhan, Durg Singh; Govil, Mahesh Chandra

    2012-01-01

    The research paper emphasizes that the Stable Matching problems are the same as the problems of stable configurations of Multi-stage Interconnection Networks (MIN). We have discusses the Stability Problems of Existing Regular Omega Multi-stage Interconnection Network (OMIN) and Proposed 3-Disjoint Paths Omega Multi-stage Interconnection Network (3DON) using the approaches and solutions provided by the Stable Matching Problem. Specifically, Stable Marriage Problem is used as an example of Stable Matching. On application of the concept of the Stable Marriage over the MINs states that OMIN is highly stable in comparison to 3DON.

  11. Marine lipids and the bioavailability of omega-3 fatty acids

    Mu, Huiling; Müllertz, Anette

    2015-01-01

    Marine lipids are enriched with omega-3 fatty acids, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Omega-3 fatty acids are important membrane lipids and have many recognized health benefits, the bioavailability of these fatty acids can therefore be important for achieving...... bioavailability of omega-3 fatty acids has been reported to be affected by several factors; among the important factors were the digestion and absorption processes of omega-3 containing lipids in the gastrointestinal tract. Both lipid structures and food structures can affect the bioavailability of omega-3 fatty....... In vitro studies provided a mechanistic understanding on the varied bioavailability caused by different lipid structures, the lower relative bioavailability of omega-3 fatty acids from FAEE formulation was closely related to the slower digestion rate of FAEE. Microencapsulated fish oil has often been...

  12. Omega-3 Fatty Acid Blood Levels Clinical Significance Update

    Superko, H. Robert; Superko, Alex R.; Lundberg, Gina P.; Margolis, Basil; Garrett, Brenda C.; Nasir, Khurram; Agatston, Arthur S.

    2014-01-01

    ABSTRACT The potential benefit of fish oil (omega-3 fatty acids) consumption to reduce cardiovascular disease (CVD) risk remains controversial. Some investigations report reduced CVD risk associated with fish or fish oil consumption while others report no benefit. This controversy is in part resolved when consideration is given to omega-3 blood levels in relation to CVD risk as well as blood levels achieved in clinical trials of omega-3 supplementation and CVD benefit. There is a wide variati...

  13. Measurement of the Spin of the Omega^- Hyperon at BABAR

    The BABAR Collaboration; Aubert, B.

    2006-01-01

    A measurement of the spin of the Omega^- hyperon produced through the exclusive process Xi_c^0 --> Omega^- K^+ is presented using a total integrated luminosity of 116 fb^-1 recorded with the BABAR detector at the e^+ e^- asymmetric-energy B-Factory at SLAC. Under the assumption that the Xi_c^0 has spin 1/2, the angular distribution of the Lambda from Omega^- --> Lambda K^- decay is inconsistent with all half-integer Omega^- spin values other than 3/2. Lower statistics data for the process Ome...

  14. {tau}{yields}{omega}3{pi}{nu} decays

    Gao, J.; Li, B.A. [Kentucky Univ., Lexington, KY (United States). Dept. of Physics and Astronomy

    2001-11-01

    A theoretical study of the anomalous decay mode {tau}{yields}{omega}{pi}{pi}{pi}{nu} is presented. The theoretical value of the branching ratio of {tau}{sup -}{yields}{omega}{pi}{sup -}{pi}{sup 0}{pi}{sup 0}{nu} agrees well with the data. The branching ratio of {tau}{sup -}{yields}{omega}{pi}{sup +}{pi}{sup -}{pi}{sup -}{nu}{sub {tau}} is predicted. It is found that the vertices of a{sub 1}{rho}{pi} and {omega}{rho}{pi} play a dominant role in these two decay modes. CVC is satisfied, and there is no adjustable parameter. (orig.)

  15. Omega-3 and omega-6 content of medicinal foods for depressed patients: implications from the Iranian Traditional Medicine

    Mandana Tavakkoli-Kakhki; Malihe Motavasselian; Mahmoud Mosaddegh; Mohammad Mahdi Esfahani; Mohammad Kamalinejad; Mohsen Nematy; Saeid Eslami

    2014-01-01

    Objectives: Considering the increasing prevalence of depression in modern societies and the positive effects of omega-3 polyunsaturated fatty acids on depression, this study aims to investigate the omega-3 and omega-6 content of various foodstuffs, prescribed or prohibited by Iranian Traditional Medicine (ITM). Materials and Methods: Firstly, reliable sources of Iranian Traditional Medicine were reviewed in order to identify the prescribed and prohibited foodstuffs for depressed patients. Aft...

  16. Needs in omega 3 and ocular pathologies

    Bretillon Lionel

    2011-09-01

    Full Text Available Life expectancy at birth has regularly increased decade after decade, especially since the beginning of the 20th century: 15 years have been gained over the past 50 years. Changes in living and dietary habits during this time period have been associated with the development of various pathologies which represent a growing socioeconomic burden. Among age-related disorders, ocular diseases are the second most prevalent ones after 65 years. Age-related Macular Degeneration (AMD is the leading cause of visual impairment after the age of 50 years. Age is the prominent risk factor for AMD and is accompanied with both endogenous (including genetics and environmental factors, such as smoking habits and dietary factors (diet rich in cholesterol and saturated fatty acids. AMD is characterized by the loss of cells at the most central area of the retina, called macula. The neural retina is a highly structured neurosensory tissue that is responsible for the transduction pathway. The transduction pathway is initiated in photoreceptors where the light stimulus is coded into an electrical signal. This signal is transmitted to neighboured neurons and transferred to the brain via the optic nerve. The retinal pigment epithelium (RPE is the cellular and metabolic interface between the neural retina and choriocapillaris through Bruch’s membrane. The close association between RPE and photoreceptors is one of the factors that promote the efficacy of RPE to, in the one hand, provide nutrients and oxygen to photoreceptors and, in the other hand, eliminate the metabolic debris originating from shedding of the outer segments. Epidemiological data suggest that dietary habits privileging the consumption of omega- 3 long chain polyunsaturated fatty acids participate to prevent from the development of AMD (Sangiovanni et al., 2009. The mechanisms underlying the effects of omega-3 fatty acids remain unclear until now. The purpose of the present paper is to give a review on

  17. Gamma bang time analysis at OMEGA

    Absolute bang time measurements with the gas Cherenkov detector (GCD) and gamma reaction history (GRH) diagnostic have been performed to high precision at the OMEGA laser facility at the University of Rochester with bang time values for the two diagnostics agreeing to within 5 ps on average. X-ray timing measurements of laser-target coupling were used to calibrate a facility-generated laser timing fiducial with rms spreads in the measured coupling times of 9 ps for both GCD and GRH. Increased fusion yields at the National Ignition Facility (NIF) will allow for improved measurement precision with the GRH easily exceeding NIF system design requirements.

  18. The Omega spectrometer in the West Hall.

    1976-01-01

    Inside the hut which sits on top of the superconducting magnet are the TV cameras that observe the particle events occurring in the spark chambers in the magnet gap below. On the background the two beam lines feeding the spectrometer target, for separated hadrons up to 40 GeV, on the right, for 80 GeV electrons, on the left, respectively. The latter strikes a radiator thus sending into Omega tagged photons up to 80 GeV. On the foreground, the two sections of the large gas Cerenkov counter working at atmospheric pressure, used for trigger purpose.

  19. Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV

    Schonning, K; Bashkanov, M; Berlowski, M; Bogoslawsky, D; Calén, H; Clement, H; Demirors, L; Ekström, C; Fransson, K; Geren, L; Gustafsson, L; Höistad, B; Ivanov, G; Jacewicz, M; Jiganov, E; Johansson, T; Keleta, S; Khakimova, O; Koch, I; Kren, F; Kullander, Sven; Kupsc, A; Kuzmin, A; Lindberg, K; Marciniewski, P; Morosov, B; Oelert, W; Pauly, C; Pettersson, H; Petukhov, Yu P; Povtorejko, A; Ruber, R J M Y; Scobel, W; Shafigullin, R; Shwartz, B; Skorodko, T; Sopov, V; Stepaniak, J; Tegner, P -E; Engblom, P Thorngren; Tikhomirov, V; Turowiecki, A; Wagner, G J; Wilkin, C; Wolke, M; Zabierowski, J; Zartova, I; Zlomanczuk, Yu

    2008-01-01

    The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with the pi0pi+pi- or pi0gamma decay products of the omega. In contrast to the case of phi meson production, the omega mesons are found to be unpolarised. This brings into question the applicability of the Okubo-Zweig-Iizuka rule when comparing the production of vector mesons in low energy hadronic reactions.

  20. ANALISIS DEL CO-TRATAMIENTO PASIVO DE AGUAS RESIDUALES MUNICIPALES Y DRENAJE ACIDO DE MINAS EN CERRO RICO DE POTOSÍ, BOLIVIA

    William H.J. Strosnider

    2015-01-01

    Full Text Available El drenaje acido de minas (DAM es un problema a nivel mundial. El co-tratamiento pasivo de DAM con aguas residuales municipales (ARM es una manera efectiva y de bajo costo que utiliza los nutrientes de ARM para tratar las concentraciones de metales y sulfato en DAM. Cerro Rico de Potosí, Bolivia es una de las grandes ciudades mineras en el mundo que tiene muchos problemas con el DAM. El objetivo de este estudio fue determinar velocidades de reacción de Al, Fe, Mn, Zn, y otros metales en DAM provenientes de un flujo de agua en Cerro Rico usando un sistema reactor de tres etapas. El DAM tenía un pH de 3.58, acidez de 1080 mg/L equivalente a CaCO3 conteniendo concentraciones de 12, 68, 17, y 550 mg/L de Al, Fe, Mn y Zn respectivamente. Las velocidades de reacción de Al, Fe, Mn y Zn fueron de 1.43, 2.09, 0.01 y 0.10 d-1, respectivamente.

  1. Hydrogen sulfide corrosion of weld regions in API X52 steel; Corrosion por acido sulfhidrico de las regiones de soldadura en acero API X52

    Arenas-Martinez, L.F [Universidad Autonoma de Coahuila, Coahuila (Mexico)]. E-mail: fernando.arenas@uadec.edu.mx; Garcia-Cerecero, G. [Corporacion Mexicana de Investigacion en Materiales S.A. de C.V., Saltillo, Coahuila (Mexico)]. E-mail: ggarcia@comimsa.com

    2012-10-15

    The corrosion behavior of gas metal arc welding (GMAW) regions has been studied using potentiodynamic polarization and polarization resistance (LPR) techniques. Experiments were conducted in hydrogen sulfide (H{sub 2}S)-containing brine and in H{sub 2}S-free brine. Welds were made on API 5L X52 steel. Due to differences in their microstructure, chemical composition and residual stress level, weld regions exhibited different responses under H{sub 2}S corrosion. Base metal exhibited the highest corrosion rate (CR) and the most cathodic corrosion potential. [Spanish] Se estudio el comportamiento ante la corrosion de las regiones de soldadura de un cordon realizado por arco metalico con gas (GMAW) sobre un acero grado API X52 mediante las tecnicas de polarizacion potencio dinamica y resistencia a la polarizacion (LPR). Los experimentos se realizaron utilizando salmuera con 300 ppm de acido sulfhidrico (H{sub 2}S) y salmuera libre de H{sub 2}S como electrolitos. Debido a las diferencias en su microestructura, composicion quimica y el nivel de esfuerzos residuales, las regiones de soldadura mostraron diferentes respuestas a la corrosion por H{sub 2}S. El metal base exhibio la velocidad de corrosion (VC) mas alta y el potencial de corrosion mas catodico.

  2. ESTUDIO DE LA ADSORCIÓN DE PROTEÍNAS SOBRE SUPERFICIES DE ACIDO POLILÁCTICO MEDIANTE TÉCNICAS GRAVIMÉTRICAS Y ELECTROQUÍMICAS

    HUGO ARMANDO ESTUPIÑAN DURAN

    2011-01-01

    Full Text Available Metodos electroquimicos fueron utilizados para promover y evaluar la adsorcion orientada de albumina y colageno sobre superficies polimericas de acido polilactico (PLA mediante la aplicacion de un sobrepotencial anodico en un rango de 0 V a 0,45 V. La adsorcion fueestudiada usando mediciones simultaneas de espectroscopia de impedancia electroquimica (EIE y microbalanza de cristal de cuarzo (QCM, en un rango de temperaturas de 25°C a 45°C, con variaciones en proteina entre 5 y 20 ¿Êg/ml en solucion buffer de fosfato de pH 7,4. Con el aumento de la concentracion de proteinas en el electrolito, disminuye la resistencia a la transferencia de carga, exhibiendo asi una mayor adsorcion sobre la superficie, ademas de aumentar la magnitud de los cambios de masa. Se mejoro la hidrofilicidad del recubrimiento, mostrando una mayor afinidad con las soluciones de colageno y por lo tanto un aumento en la biocompatibilidad debido a la activacion superficial.

  3. La efectividad de los ácidos grasos hiperoxigenados en el cuidado de la piel perilesional, la prevención de las úlceras por presión, vasculares y de pie diabético The effectiveness of hyperoxygenated fatty acids in the care of skin perilesional, the prevention of the pressure ulcers, vascular ulcers and diabetic foot

    F. Martínez Cuervo; E. Pareras Galofré

    2009-01-01

    En la última década han aparecido en el mercado los ácidos grasos hiperoxigenados como una herramienta a tener en cuenta en la prevención de las úlceras por presión. Sin embargo, disponemos de pocos estudios que avalen su uso, especialmente en estos últimos años. Realizamos un estudio de revisión bibliográfica de los artículos publicados de ácidos grasos hiperoxigenados con el objetivo de conocer su uso y efectividad. Se constata que los ácidos grasos hiperoxigenados son muy importantes en el...

  4. Omega-3 fatty acid supplementation in horses

    Tanja Hess

    2014-12-01

    Full Text Available Polyunsaturated omega-3 fatty acids (n-3 PUFA are a family of essential fatty acids with many biological activities. These fatty acids are incorporated into cell membranes, changing their structural and functional characteristics. N-3 PUFA can act by modulating inflammatory responses at different levels. Omega-3 PUFA can be converted in the body to longer-chain n-3 PUFA at a limited rate and are differently converted in body systems. It appears that when specific longer-chain n-3 PUFA are desired these need to be supplemented directly in the diet. In different species some evidence indicates a potential effect on improving insulin sensitivity. Recently, a novel class of n-3 PUFA-derived anti-inflammatory mediators have been recognized, termed E-series and D-series resolvins, formed from EPA and DHA, respectively. N-3 PUFA derived resolvins and protectins are heavily involved in the resolution of inflammation. Supplementation with n-3 fatty acids in horses may help manage chronic inflammatory conditions such as osteoarthritis, equine metabolic syndrome, laminitis, and thereby help to improve longevity of sport horse.

  5. Extracting the Omega- electric quadrupole moment from lattice QCD data

    G. Ramalho, M.T. Pena

    2011-03-01

    The Omega- has an extremely long lifetime, and is the most stable of the baryons with spin 3/2. Therefore the Omega- magnetic moment is very accurately known. Nevertheless, its electric quadrupole moment was never measured, although estimates exist in different formalisms. In principle, lattice QCD simulations provide at present the most appropriate way to estimate the Omega- form factors, as function of the square of the transferred four-momentum, Q2, since it describes baryon systems at the physical mass for the strange quark. However, lattice QCD form factors, and in particular GE2, are determined at finite Q2 only, and the extraction of the electric quadrupole moment, Q_Omega= GE2(0) e/(2 M_Omega), involves an extrapolation of the numerical lattice results. In this work we reproduce the lattice QCD data with a covariant spectator quark model for Omega- which includes a mixture of S and two D states for the relative quark-diquark motion. Once the model is calibrated, it is used to determine Q_Omega. Our prediction is Q_Omega= (0.96 +/- 0.02)*10^(-2) efm2 [GE2(0)=0.680 +/- 0.012].

  6. Omega Model of Standard Calculus(续2)

    Huang Cheng-gui

    2004-01-01

    Chapter Two. Construction of Omega Continuum and Special Rules of the Integral of Infinitesimals Purpose of the chapter Chapter one states the foundation of differential calculus. The task of the chapter is to construct Omega continuum,at the same time to interlude two axioms of the integral of infinitesimals.

  7. The Omega Ring Imaging Cerenkov Detector readout system user's guide

    The manual describes the electronic readout system of the Ring Imaging Cerenkov Detector at the CERN Omega Spectrometer. The system is described in its configuration of September 1984 after the Rich readout system had been used in two Omega experiments. (U.K.)

  8. Relativistic quark model for the Omega- electromagnetic form factors

    G. Ramalho, K. Tsushima, Franz Gross

    2009-08-01

    We compute the Omega- electromagnetic form factors and the decuplet baryon magnetic moments using a quark model application of the Covariant Spectator Theory. Our predictions for the Omega- electromagnetic form factors can be tested in the future by lattice QCD simulations at the physical strange quark mass.

  9. Perfil de ácidos grasos libres y características sensoriales de quesos reggianito elaborados con diferentes fermentos

    Zalazar, C. A.

    2008-06-01

    Full Text Available Reggianito is the most important variety among the Argentinean hard cheeses. During its ripening period several biochemical reactions of proteins and fat are responsible for its final sensory characteristics. The fat transformations, in a first step, produce free fatty acids (FFA. In the present work, the FFA profile from C6:0 to C18:2 during ripening was evaluated. Reggianito cheeses were produced with a “wild” whey starter and with selected strains of Lactobacillus helveticus isolated from natural whey. Information from FFA profiles was processed by Principal Component Analysis (PCA and Discriminant Analysis (DA. Despite the fact that FFA levels grew continuously during ripening, no differences were found among cheeses produced with different starters. Sensory analyses did not show differences among the different cheeses produced. All cheeses were of satisfactory sensory quality. Results from this study are important for an increased knowledge of the ripening process of Reggianito cheese, considering the scarce information currently existing on this subject. At the same time, the substitution of a natural whey starter for a selected strain starter appears to be a possible advantage in order to improve and to standardize the quality of the cheese.El queso Reggianito es la variedad más importante dentro de los quesos duros fabricados en Argentina. Durante la maduración se producen innumerables reacciones bioquímicas sobre sus constituyentes, que conducen a definir las características sensoriales típicas de esta variedad de queso. Una de estas transformaciones involucra a la materia grasa originándose en una primera etapa ácidos grasos libres (AGL. En el presente trabajo se evaluó el perfil de AGL desde C6:0 hasta C18:2 a diferentes tiempos de maduración, en quesos Reggianito elaborados con suero fermento natural y con cepas seleccionadas de Lactobacillus helveticus. La información obtenida de los perfiles cromatográficos fue

  10. Estudio de la adsorción de proteínas sobre superficies de acido poliláctico mediante técnicas gravimétricas y electroquímicas

    HUGO ARMANDO ESTUPIÑAN DURAN; DARIO YESID PEÑA BALLESTEROS; DIONISIO ANTONIO LAVERDE CATAÑO; PATRICIA ESCOBAR RIVERO; CUSTODIO VÁSQUEZ QUINTERO; YURLEY KARINA ANAYA; LEIDY MARCELA GELVES JEREZ

    2011-01-01

    Metodos electroquimicos fueron utilizados para promover y evaluar la adsorcion orientada de albumina y colageno sobre superficies polimericas de acido polilactico (PLA) mediante la aplicacion de un sobrepotencial anodico en un rango de 0 V a 0,45 V. La adsorcion fueestudiada usando mediciones simultaneas de espectroscopia de impedancia electroquimica (EIE) y microbalanza de cristal de cuarzo (QCM), en un rango de temperaturas de 25°C a 45°C, con variaciones en proteina entre 5 y 20 ¿Êg/ml en...

  11. Recent advances in the field of omega-3-lipids

    Jacobsen, Charlotte

    During the last 15-20 years the use of fish and algae oils for human applications has received increasing attention from academia, industry and consumers. This is due to the fact that a growing body of evidence supports that marine omega-3 lipids have a wide range of health beneficial effects, and...... at the same time the intake of these healthy lipids is far below the recommendable level in many parts of the world. This presentation will provide a brief overview of recent advances in the body of knowledge about the health benefits of omega-3 lipids. For many years fish oil produced from wild fish...... has been the most important source of marine omega-3 fatty acids. However, the production of fish oil has been stable during the last decade. Therefore, to meet the increased demand for omega-3 lipids new sources are available. The presentation will discuss possible future sources of omega-3 lipids...

  12. EFECTO DEL NIVEL DE CONCENTRADO SOBRE EL PERFIL DE ÁCIDOS GRASOS DE LA LECHE DE VACAS HOLSTEIN EN PASTOREO

    Horacio Castro-Hernández; F. Filiberto González-Martínez; I. Arturo Domínguez-Vara; J. Manuel Pinos-Rodríguez; Ernesto Morales-Almaráz; Rodolfo Vieyra-Alberto

    2014-01-01

    El contenido de ácido linoléico conjugado (CLA c9 t11) en leche depende principalmente de la producción en el rumen de ácido vaccénico, el cual está influenciado por el aporte de los ácidos linoléico y linolénico en la dieta. El objetivo de este estudio fue evaluar el efecto del nivel de concentrado en la producción, composición y perfil de ácidos grasos de la leche de nueve vacas Holstein en praderas asociadas de gramíneas y leguminosas. El diseño experimental fue un cuadro latino 3×3 y los ...

  13. Contenido de ácido linoleico conjugado (cla) y composición de ácidos grasos en algunos yogures comerciales de colombia.

    Gutiérrez Álvarez, Luis Felipe; Martínez, Jenny Carolina; Barón Núñez, Marby Rocío

    2011-01-01

    Se estudió la concentración de ácido linoleico conjugado (CLA) de quince yogures de las marcas comerciales de mayor consumo y distribución en el mercado colombiano, así como su composición en ácidos grasos. La concentración de CLA, expresada como mg de ácido cis-9,trans-11 octadecadienoico/g de grasa y como mg de ácido cis-9,trans-11 octadecadienoico/100 g de yogur osciló entre 4,5 y 8,2 y entre 7,8 y 25,5, respectivamente. Los valores de CLA más elevados (>6,0 mg/g de grasa) en los yogure...

  14. Efecto de la harina de semilla de calabaza (Cucurbita maxima) en el colesterol total y ácidos grasos de los huevos de gallinas ponedoras

    Y. Martínez; M. Valdivié; Solano, G.; Mirna Estarrón; Martínez, O; J. Córdova

    2012-01-01

    Para evaluar el efecto de cuatro niveles de inclusión (0, 3.3, 6.6 y 10 %) de harina de semilla de calabaza (Cucurbita maxima) en el colesterol total y ácidos grasos de huevos de gallinas ponedoras, se ubicaron en pleno pico de puesta 160 gallinas White Leghorn (Híbrido L-33) durante 91 d, según diseño completamente aleatorizado. Se aplicó análisis de varianza de clasificación simple, excepto para la concentración de extracto etéreo, donde se utilizó el análisis factorial con cuatro tratamien...

  15. Conjugated linoleic acid and fatty acid binding protein as antioxidants Ácido linoleico conjugado y proteína transportadora de ácidos grasos como antioxidantes

    V.A. Piergiacomi

    2006-12-01

    Full Text Available Studies were carried out to determine the effect of conjugated linoleic acid (CLA and rat liver cytosolic protein enriched in fatty acid binding protein (FABP on the non-enzymatic lipid peroxidation of rat liver microsomes. The inhibition of lipid peroxidation was more evident when the FABP containing fraction obtained from CLA-group was used with either kind of microsomes (CLA and control. The chemiluminescence and polyunsaturated fatty acid composition of rat liver microsomes changed after CLA treatment. When native and peroxidized microsomes obtained from control group were compared, the most affected polyunsaturated fatty acids were: C18:2, C18:3 and C20:4, while in CLA-group C20:4 was mainly peroxidized The simultaneous analysis of chemiluminescence and fatty acid composition demonstrated that CLA and FABP play a role protecting rat liver microsomes against the harmful effect of lipid peroxidation.El objetivo del trabajo fue determinar el efecto del ácido linoleico conjugado (ALC y de la proteína citosólica de hígado de rata enriquecida en Proteína Transportadora de Ácidos Grasos (PTAG, sobre la peroxidación no enzimática de lípidos de microsomas hepáticos de rata. Luego de la incubación de éstos en un sistema ascorbato-Fe++ se observó que el total de cpm/mg de proteina originada por quimioluminiscencia fue menor en los microsomas obtenidos de las ratas del grupo ALC respecto a los del grupo control. Cuando la fracción PTAG obtenida del grupo ALC fue agregada a la peroxidación de microsomas de ambos grupos de animales ALC y control, la inhibición de la lipoperoxidación fue más evidente. Además se encontró que ambas fracciones PTAG, tanto la obtenida de animales del grupo ALC como la obtenida del grupo control, tuvieron mayor efecto como antioxidantes cuando se usaron microsomas ALC respecto a microsomas control. La composición de ácidos grasos de los microsomas cambió luego del tratamiento con ALC. Comparando

  16. Phase Effects in Two-Photon Free-Free Transitions in a Bichromatic Field of Frequencies $\\omega$ and $3\\omega$

    Cionga, Aurelia; Zloh, Gabriela

    2013-01-01

    The effect of the relative phase between the components of a bichromatic field of frequencies $\\omega$ and $3\\omega $ is discussed in the case of free-free transitions in laser-assisted electron-hydrogen scattering. For fast projectile and low field intensities, the role of target dressing is pointed out.

  17. Consumo de fructosa y sus implicaciones para la salud: malabsorción de fructosa e hígado graso no alcohólico

    María Jesús Riveros

    2014-03-01

    Full Text Available La ingesta de fructosa se ha incrementado considerablemente en los últimos años, especialmente bajo la forma de jarabe de maíz alto en fructosa, debido a su gran poder edulcorante. Diversos estudios, han asociado su elevado consumo con alteraciones metabólicas, hígado graso no alcohólico y malabsorción de fructosa, entre otras patologías. Esta revisión tiene como objetivo actualizar acerca del efecto de la alta ingesta de fructosa en el hígado e intestino, asociada principalmente a alimentos procesados con fructosa agregada. Métodos: Para la búsqueda bibliográfica se utilizaron las bases de datos de Pubmed, Scopus y Scielo, seleccionando aquellos artículos publicados después del año 2000 y resultantes de las palabras claves "fructose intake, high fructose corn syrup, nonalcoholic fatty liver and fructose, fructose malabsorption, fructose intolerance/metabolism". Resultados: La búsqueda arrojó 735 publicaciones de las cuales 78 cumplieron con los criterios de inclusión. Conclusiones: El consumo de fructosa ha aumentado en las últimas décadas, especialmente a través de bebidas endulzadas y productos alimentarios con fructosa agregada. La alta ingesta de fructosa tiene un impacto a nivel intestinal y hepático, asociándose a patologías como hígado graso no alcohólico y malabsorción de fructosa.

  18. Strong Field Ionization in $\\omega$-$2\\omega$ Laser Pulses: Phase-of-the-Phase Spectroscopy

    Skruszewicz, S; Meiwes-Broer, K -H; Arbeiter, M; Fennel, Th; Bauer, D

    2015-01-01

    The presence of a weak second-harmonic field in an intense-laser ionization experiment affects the momentum-resolved electron yield, depending on the relative phase between the $\\omega$ and the $2\\omega$ component. The proposed 'phase-of-the-phase spectroscopy' quantifies for each final electron momentum a relative-phase contrast (RPC) and a 'phase of the phase' (PP), describing how much and with which phase lag, respectively, the yield changes as function of relative phase. Experimental results for RPC and PP spectra for rare gas atoms and CO$_2$ are presented. The PP spectra demonstrate a rather universal structure with pronounced features that allow to distinguish photoelectrons that rescatter during the first or the second return to their parent ion. Details in the PP and RPC spectra are target sensitive and thus may be used to extract structural (or even dynamical) information with high accuracy.

  19. Circular dichroism in hydrogen multiphoton ionization by a bichromatic field of frequencies {omega} and 3{omega}

    Fifirig, Magda [Department of Chemistry, University of Bucharest, Bucharest (Romania); Cionga, Aurelia [Institute of Space Sciences, Bucharest-Magurele (Romania)

    2002-02-28

    The dichroic effects in the multiphoton ionization of the ground state hydrogen atom by a coherent superposition of a laser beam and its third harmonic, are studied via perturbative calculations. The final state of the photoelectrons, which has the energy E=E{sub 1}+3(h/2{pi}){omega} (E{sub 1} the ground state energy and {omega} the laser frequency), is reached by two interfering quantum paths: (a) absorption of one harmonic photon and (b) absorption of three laser photons. In the chosen regime of field intensities, the radiative corrections to the absorption of one harmonic photon may be disregarded. Our numerical results illustrate the influence of the laser frequency, of the relative intensity and of the harmonic phase upon the dichroic signal. (author)

  20. Anti-inflammatory pro-resolving derivatives of omega-3 and omega-6 polyunsaturated fatty acids

    Jerzy Z. Nowak

    2010-01-01

    Inflammation is a physiological defense reaction of living tissues to injury or infection. An array of mediators, including those derived from omega-6 (ω6) polyunsaturated fatty acids (PUFAs), such as arachidonic acid (AA) e.g. prostaglandins and leukotrienes, promote the inflammatory response. Acute inflammation has several programmed fates, including complete resolution or progression to chronic inflammation, scarring, and eventual loss of tissue function. Studies on AA-derived proinflammat...

  1. Regulation of rabbit lung cytochrome P-450 prostaglandin omega-hydroxylase (P-450/sub PG-omega/) during pregnancy

    The mechanism of induction during pregnancy of a rabbit lung prostaglandin omega-hydroxylase cytochrome P-450 has been investigated. This activity has been demonstrated to be induced over 100-fold in 28-day pregnant rabbits, as compared to nonpregnant rabbits. The induction is reflected by an increase in the amount of P-450/sub PG-omega/ protein as measured by Western blotting. P-450/sub PG-omega/ microsomal protein increases throughout gestation concomitant with an increase in PGE1 omega-hydroxylase activity. Elucidation of the level of induction involved extraction of RNA from rabbit lungs obtained at various days of gestation followed by in vitro translation of the RNA in the presence of 35S-methionine. Immunoprecipitation of newly synthesized P-450 and analysis of the immunoisolates by SDS-PAGE, autoradiography and densitometry of the P-450/sub PG-omega/ band revealed that the P-450/sub PG-omega/ mRNA levels followed the gestational time-dependent increase observed for both PGE1 omega-hydroxylase activity and P-450/sub PG-omega/ protein, i.e., a gradual increase peaking at 28-days, dropping precipitously to near control levels following parturition. These data suggest that control of P-450/sub PG-omega expression occurs at the transcriptional level. Western blots of human lung bronchioloalveolar-carcinoma cell lines NCL-H322 and NCL-H358 utilizing a guinea pig IgG to P-450/sub PG-omega/ detect a cross-reactive species

  2. Omega spectrometer ready for SPS beams

    1977-01-01

    Two different beams arrive into the Omega magnet: - a tagged photon beam for a charm search - experiment WA4 by the Bonn-CERN-Daresbury-Ecole Polytechnique-Glasgow-Lancaster-Manchester-Orsay-Sheffield Collaboration; - a separated hadron beam, at first for a beam-dump experiment - WA12 by the Birmingham-CERN-Ecole Polytechnique-MPI, Munich-Neuchâtel Collaboration. Beams of either negative or positive pions or kaons, protons or antiprotons, all at an energy around 40 GeV were made to impinge on a copper target where a shower of hadrons was produced and, on occasion, two muons which before detection passed through an iron absorber (not visible here). WA12 was completed in February 1977. At the centre, on top of the superconducting magnet, the hut containing the TV cameras, These observe the particle events occurring in the spark chambers in the magnet below.

  3. Obtención de una leche enriquecida de forma natural con ácidos grasos omega-3 y ácido conjugado linoleico (CLA) sin disminución de la cantidad de la grasa láctea

    Siurana Marina, Adriana

    2015-01-01

    Se realizaron tres estudios con el fin de identificar estrategias para evitar la depresión de la grasa láctea en las vacas lecheras cuando las dietas se complementan con aceites ricos en AGPI. Una revisión bibliográfica realizada en el primer estudio mostró que las recomendaciones diarias de CLA más comúnmente reportados para humanos son 0,8 g/d (0,6 a 3,0 g/d), aunque todas las recomendaciones se han extrapolado a partir de modelos animales y los pocos estudios en humanos reportan resultados...

  4. Estabilidad oxidativa de huevos enriquecidos con ácidos grasos poliinsaturados omega 3, frente a antioxidantes naturales Estabilidade oxidativa de ovos enriquecidos com ácidos graxos poliinsaturados ômega 3, frente a antioxidantes naturais

    María Elena Bernal Gómez; Cássio Xavier de Mendonça-Junior; Jorge Mancini-Filho

    2003-01-01

    Fueron alimentadas 192 gallinas ponedoras de 22 semanas de edad, de linaje comercial Babcock, durante 30 días con dietas de 0 (cero) y 12,7% de semilla de linaza molida que corresponde a 0 y 5% de aceite de linaza, respectivamente. Fueron definidos 8 tratamientos: 4 grupos con 12,7% de semilla de linaza (control/sin antioxidante; BHA+BHT, 100+100 ppm; orégano, 200 ppm; romero, 200 ppm) y 4 grupos sin semilla de linaza, pero utilizando los mismos antioxidantes. Este estudio fue realizado con e...

  5. OMEGA: a short-wavelength laser for fusion experiments

    The OMEGA, Nd:glass laser facility was constructed for the purpose of investigating the feasibility of direct-drive laser fusion. With 24 beams producing a total energy of 4 kJ or a peak power of 12 TW, OMEGA is capable of nearly uniform illumination of spherical targets. Six of the OMEGA beams have recently been converted to short-wavelength operation (351 nm). In this paper, we discuss details of the system design and performance, with particular emphasis on the frequency-conversion system and multi-wavelength diagnostic system

  6. Omega-3 Polyunsaturated Fatty Acids and Heart Rate Variability

    JeppeHagstrupChristensen

    2011-01-01

    Omega-3 polyunsaturated fatty acids (PUFA) may modulate autonomic control of the heart because omega-3 PUFA is abundant in the brain and other nervous tissue as well as in cardiac tissue. This might partly explain why omega-3 PUFA offer some protection against sudden cardiac death (SCD). The autonomic nervous system is involved in the pathogenesis of SCD. Heart rate variability (HRV) can be used as a non-invasive marker of cardiac autonomic control and a low HRV is a predictor for SCD and arr...

  7. Theory of $\\omega^{-4/3}$ law of the power spectrum in dissipative flows

    Hayakawa, Hisao

    2005-01-01

    It is demonstrated that $\\omega^{-4/3}$ law of the power spectrum with the angular frequency $\\omega$ in dissipative flows is produced by the emission of dispersive waves from the antikink of an congested domain. The analytic theory predicts the spectrum is proportional to $\\omega^{-2}$ for relatively low frequency and $\\omega^{-4/3}$ for high frequency.

  8. Efecto de diferentes métodos de extracción sobre el perfil de ácidos grasos en el aceite de aguacate (Persea americana Mill. var. Hass)

    José Alberto Ariza Ortega; Fernando López Valdez; Judith Coyotl Huerta; María Elena Ramos Cassellis; Joel Díaz Reyes; Arturo Martínez Zavala

    2011-01-01

    El objetivo de este estudio fue evaluar la posible formación de ácidos grasos trans (AGT) en el aceite de aguacate, extraído con disolvente (hexano), con y sin calor, y por centrifugación. Para analizar el aceite se emplearon índices químicos, y para la identificación y cuantificación de los ácidos grasos se utilizó Espectroscopía de Infrarrojo con Transformada de Fourier (EITF), en la región media de 400 a 4000 cm-1 y cromatografía de gases. En los resultados del análisis por EITF se demostr...

  9. Caracterización del papel de la ácido graso translocasa CD36 en la enfermedad hepática grasa no alcohólica y en la hepatitis crónica por virus C

    Fernández Bermejo, Miguel

    2014-01-01

    Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Medicina, Departamento de Medicina. Fecha de lectura: 04-12-2014 Introducción: La ácido graso translocasa CD36 facilita la captación y el transporte intracelular de los ácidos grasos de cadena larga en diversos tipos celulares. En modelos animales de esteatosis hepática, su expresión está aumentada en los hepatocitos, acompañándose su translocación a la membrana plasmática de un incremento en la incorporación he...

  10. Associations between variants of FADS genes and omega-3 and omega-6 milk fatty acids of Canadian Holstein cows

    Ibeagha-Awemu, Eveline M; Akwanji, Kingsley A; Beaudoin, Frédéric; Zhao, Xin

    2014-01-01

    Background Fatty acid desaturase 1 (FADS1) and 2 (FADS2) genes code respectively for the enzymes delta-5 and delta-6 desaturases which are rate limiting enzymes in the synthesis of polyunsaturated omega-3 and omega-6 fatty acids (FAs). Omega-3 and-6 FAs as well as conjugated linoleic acid (CLA) are present in bovine milk and have demonstrated positive health effects in humans. Studies in humans have shown significant relationships between genetic variants in FADS1 and 2 genes with plasma and ...

  11. Analysis of the vertexes $\\Omega^*_Q\\Omega_Q^*\\phi$, $\\Omega^*_Q\\Xi_Q^*K^*$, $\\Xi_Q^*\\Sigma^*_QK^*$ and $\\Sigma_Q^*\\Sigma^*_Q \\rho$ with the light-cone QCD sum rules

    Wang, Zhi-Gang; Li, Jun-Fang

    2010-01-01

    In this article, we parameterize the vertexes $\\Omega^*_Q\\Omega_Q^*\\phi$, $\\Omega^*_Q\\Xi_Q^*K^*$, $\\Xi_Q^*\\Sigma^*_QK^*$ and $\\Sigma_Q^*\\Sigma^*_Q \\rho$ with four tensor structures due to Lorentz invariance, and study the corresponding four strong coupling constants with the light-cone QCD sum rules.

  12. Omega 3 mastné kyseliny v diabetologii

    Kopecký, Jan

    2011-01-01

    Roč. 13, Suppl.B (2011), B60-B64. ISSN 1212-7299 Institutional research plan: CEZ:AV0Z50110509 Keywords : Omega-3 PUFA * sea fish * cardiovascular disease Subject RIV: FB - Endocrinology, Diabetology, Metabolism, Nutrition

  13. Topological classification of zero-dimensional $M_\\omega$-groups

    Banakh, Taras

    2010-01-01

    A topological group $G$ is called an $M_\\omega$-group if it admits a countable cover $\\K$ by closed metrizable subspaces of $G$ such that a subset $U$ of $G$ is open in $G$ if and only if $U\\cap K$ is open in $K$ for every $K\\in\\K$. It is shown that any two non-metrizable uncountable separable zero-dimenisional $M_\\omega$-groups are homeomorphic. Together with Zelenyuk's classification of countable $k_\\omega$-groups this implies that the topology of a non-metrizable zero-dimensional $M_\\omega$-group $G$ is completely determined by its density and the compact scatteredness rank $r(G)$ which, by definition, is equal to the least upper bound of scatteredness indices of scattered compact subspaces of $G$.

  14. The topology of ultrafilters as subspaces of $2^\\omega$

    Medini, Andrea

    2011-01-01

    Using the property of being completely Baire, countable dense homogeneity and the perfect set property we will be able, under Martin's Axiom for countable posets, to distinguish non-principal ultrafilters on $\\omega$ up to homeomorphism. Here, we identify ultrafilters with subpaces of $2^\\omega$ in the obvious way. Using the same methods, still under Martin's Axiom for countable posets, we will construct a non-principal ultrafilter $\\UU\\subseteq 2^\\omega$ such that $\\UU^\\omega$ is countable dense homogeneous. This consistently answers a question of Hru\\v{s}\\'ak and Zamora Avil\\'es. Finally, we will give some partial results about the relation of such topological properties with the combinatorial property of being a $\\mathrm{P}$-point.

  15. The $\\Omega$ dependence of the velocity divergence distribution

    Bernardeau, F; Hivon, E; Bouchet, F R

    1996-01-01

    We present a series of results investigating the $\\Omega$ dependence of the distribution function of the large scale local cosmic velocity divergence. Analytical studies using perturbation theory techniques indicate that the shape of this distribution should be strongly dependent on $\\Omega$. This dependence is all the more interesting as it does not involve biases of the galaxy distribution with respect to the underlying density distribution, making it a potentially promising and useful basis for new and alternative methods to obtain bias-independent estimates of $\\Omega$. After a description of the $\\Omega$ dependent characteristics expected in the shape of the velocity divergence PDF, we study this distribution on the basis of a set of $N$-body simulations. To analyze the discretely sampled velocity field yielded by the latter, we apply a set of recently developed numerical tools, the ``Voronoi'' and ``Delaunay'' methods. These two methods were devised specifically for the purpose of investigating statisti...

  16. The Rotation of Sub-Populations in omega Centauri

    Pancino, E; Ferraro, F R; Bellazzini, M

    2007-01-01

    We present the first result of the Ital-FLAMES survey of red giant branch (RGB) stars in omega Cen. Radial velocities with a precision of ~0.5 km/s are presented for 650 members of omega Cen observed with FLAMES-Giraffe at the Very Large Telescope. We found that stars belonging to the metal -poor (RGB-MP), metal-intemediate (RGB-MInt) and metal-rich (RGB-a) sub -populations of Omega Cen are all compatible with having the same rotational pattern. Our results appear to contradict past findings by Norris et al., who could not detect any rotational signature for metal -rich stars. The slightly higher precision of the present measurements and the much larger sample size, especially for the metal-richer stars, appear as the most likely explanation for this discrepancy. The result presented here weakens the body of evidence in favour of a merger event in the past history of omega Cen.

  17. A study of tau decays involving eta and omega mesons

    Buskulic, Damir; Décamp, D; Ghez, P; Goy, C; Lees, J P; Lucotte, A; Minard, M N; Nief, J Y; Odier, P; Pietrzyk, B; Casado, M P; Chmeissani, M; Crespo, J M; Delfino, M C; Efthymiopoulos, I; Fernández, E; Fernández-Bosman, M; Carrido, L; Juste, A; Martínez, M; Orteu, S; Padilla, C; Park, I C; Pascual, A; Perlas, J A; Riu, I; Sánchez, F; Teubert, F; Colaleo, A; Creanza, D; De Palma, M; Gelao, G; Girone, M; Iaselli, Giuseppe; Maggi, G; Maggi, M; Marinelli, N; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Alemany, R; Bazarko, A O; Bonvicini, G; Bright-Thomas, P G; Cattaneo, M; Comas, P; Coyle, P; Drevermann, H; Forty, Roger W; Frank, M; Hagelberg, R; Harvey, J; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, Ivan; Lutters, G; Martin, E B; Mato, P; Minten, Adolf G; Miquel, R; Mir, L M; Moneta, L; Oest, T; Pacheco, A; Pusztaszeri, J F; Ranjard, F; Rensing, P E; Rizzo, G; Rolandi, Luigi; Schlatter, W D; Schmelling, M; Schmitt, M; Schneider, O; Tejessy, W; Tomalin, I R; Venturi, A; Wachsmuth, H W; Wagner, A; Ajaltouni, Ziad J; Barrès, A; Boyer, C; Falvard, A; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, J C; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Rossignol, J M; Fearnley, Tom; Hansen, J B; Hansen, J D; Hansen, J R; Hansen, P H; Nilsson, B S; Rensch, B; Wäänänen, A; Kyriakis, A; Markou, C; Simopoulou, Errietta; Siotis, I; Vayaki, Anna; Zachariadou, K; Blondel, A; Bonneaud, G R; Brient, J C; Bourdon, P; Rougé, A; Rumpf, M; Valassi, Andrea; Verderi, M; Videau, H L; Candlin, D J; Parsons, M I; Focardi, E; Parrini, G; Corden, M; Georgiopoulos, C H; Jaffe, D E; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Casper, David William; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, G P; Passalacqua, L; Pepé-Altarelli, M; Curtis, L; Dorris, S J; Halley, A W; Knowles, I G; Lynch, J G; O'Shea, V; Raine, C; Reeves, P; Scarr, J M; Smith, K; Teixeira-Dias, P; Thompson, A S; Thomson, F; Thorn, S; Turnbull, R M; Becker, U; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, E E; Putzer, A; Schmidt, M; Sommer, J; Tittel, K; Werner, S; Wunsch, M; Abbaneo, D; Beuselinck, R; Binnie, David M; Cameron, W; Dornan, Peter J; Moutoussi, A; Nash, J; Sedgbeer, J K; Stacey, A M; Williams, M D; Dissertori, G; Girtler, P; Kuhn, D; Rudolph, G; Betteridge, A P; Bowdery, C K; Colrain, P; Crawford, G; Finch, A J; Foster, F; Hughes, G; Sloan, Terence; Williams, M I; Galla, A; Giehl, I; Greene, A M; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, H G; Van Gemmeren, P; Zeitnitz, C; Aubert, Jean-Jacques; Bencheikh, A M; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Diaconu, C A; Etienne, F; Konstantinidis, N P; Payre, P; Rousseau, D; Talby, M; Sadouki, A; Thulasidas, M; Trabelsi, K; Aleppo, M; Ragusa, F; Bauer, C; Berlich, R; Blum, Walter; Büscher, V; Dietl, H; Dydak, Friedrich; Ganis, G; Gotzhein, C; Kroha, H; Lütjens, G; Lutz, Gerhard; Männer, W; Moser, H G; Richter, R H; Rosado-Schlosser, A; Schael, S; Settles, Ronald; Seywerd, H C J; Saint-Denis, R; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Choi, Y; Cordier, A; Davier, M; Duflot, L; Grivaz, J F; Heusse, P; Höcker, A; Jacholkowska, A; Jacquet, M; Kim, D W; Le Diberder, F R; Lefrançois, J; Lutz, A M; Nikolic, I A; Park, H J; Schune, M H; Simion, S; Veillet, J J; Videau, I; Zerwas, D; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, M A; Ciulli, V; Dell'Orso, R; Fantechi, R; Ferrante, I; Foà, L; Forti, F; Giassi, A; Giorgi, M A; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, P S; Messineo, A; Palla, Fabrizio; Sanguinetti, G; Sciabà, A; Spagnolo, P; Steinberger, Jack; Tenchini, Roberto; Tonelli, G; Vannini, C; Verdini, P G; Walsh, J; Blair, G A; Bryant, L M; Cerutti, F; Chambers, J T; Gao, Y; Green, M G; Medcalf, T; Perrodo, P; Strong, J A; Von Wimmersperg-Töller, J H; Botterill, David R; Clifft, R W; Edgecock, T R; Haywood, S; Maley, P; Norton, P R; Thompson, J C; Wright, A E; Bloch-Devaux, B; Colas, P; Emery, S; Kozanecki, Witold; Lançon, E; Lemaire, M C; Locci, E; Marx, B; Pérez, P; Rander, J; Renardy, J F; Roussarie, A; Schuller, J P; Schwindling, J; Trabelsi, A; Vallage, B; Black, S N; Dann, J H; Johnson, R P; Kim, H Y; Litke, A M; McNeil, M A; Taylor, G; Booth, C N; Boswell, R; Brew, C A J; Cartwright, S L; Combley, F; Köksal, A; Lehto, M H; Newton, W M; Reeve, J; Thompson, L F; Böhrer, A; Brandt, S; Cowan, G D; Grupen, Claus; Minguet-Rodríguez, J A; Rivera, F; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Della Marina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J E; Wasserbaech, S R; Armstrong, S R; Elmer, P; Feng, Z; Ferguson, D P S; Gao, Y S; González, S; Grahl, J; Greening, T C; Hayes, O J; Hu, H; McNamara, P A; Nachtman, J M; Orejudos, W; Pan, Y B; Saadi, Y; Scott, I J; Walsh, A M; Wu, X; Yamartino, J M; Zheng, M; Zobernig, G

    1997-01-01

    The 132 pb$^{-1}$ of data collected by ALEPH from 1991 to 1994 have been used to analyze $\\eta$ and $\\omega$ production in $\\tau$ decays. The following branching fractions have been measured: \\begin{eqnarray*} B(\\tau^-\\to\

  18. Omega-3 Fish Oil Supplements Might Boost Antidepressants' Effects

    ... html Omega-3 Fish Oil Supplements Might Boost Antidepressants' Effects Data from 8 randomized clinical trials suggests ... fish oil supplements may improve the effectiveness of antidepressants, new research suggests. Researchers reviewed the findings of ...

  19. Omega-3 fatty acids in mood disorders: an overview

    Young Christopher

    2003-01-01

    Full Text Available This review addresses the potential role of omega-3 fatty acids in mood disorders, from the biochemical rationale for their use to the growing body of data supporting their clinical efficacy.

  20. Measurement of two photon production of. rho. sup 0. omega

    Wegner, A.; Greenshaw, T.; Hagemann, J.; Heinzelmann, G.; Kleinwort, C.; Kuhlen, M.; Naroska, B.; Ould-Saada, F.; Pitzl, D.; Schneekloth, U.; Weber, G. (Hamburg Univ. (Germany, F.R.). 2. Inst. fuer Experimentalphysik); Olsson, J.; Bartel, W.; Felst, R.; Haidt, D.; Kado, H.; Knies, G.; Krehbiel, H.; Magnussen, N.; Meinke, R.; Ramcke, R.; Schmidt, D.; Steffen, P. (Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany, F.R.)); Allison, J.; Barlow, R.J.; Chrin, J.; Duerdoth, I.P.; Loebinger, F.K.; Macbeth, A.A.; Murphy, P.G.; Stephens, K. (Manchester Univ. (UK)); Ambrus, K.; Bethke, S.; Dieckmann, A.; Eckerlin, G.; Elsen, E.; Heintze, J.; Hellenbrand, K.H.; Komamiya, S.; Krogh, J. v.; Rieseberg, H.; Smolik, L.; Spitzer, J.; Wagner, A.; Zimmer, M. (Heidelberg Univ. (Germany, F.R.). Physikalisches Inst.); Bowdery, C.K.; Finch, A.J.; Foster, F.; Hughes, G.; Nye, J.M.; Walker, I.W. (Lancaster Univ. (UK)); Cartwright, S.L.; Clarke, D.; Marshall, R.; Middleton, R.P. (Rutherford Appleton; JADE Collaboration

    1990-11-01

    The reaction {gamma}{gamma}{yields}{pi}{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup 0} has been studied using the JADE detector at PETRA. The cross sections for {gamma}{gamma}{yields}{omega}{pi}{sup +}{pi}{sup -} and for {gamma}{gamma}{yields}{omega}{rho}{sup 0} are given. We observe no peak in these cross section in the region W{sub {gamma}{gamma}}=1.9-2.0 GeV. (orig.).

  1. Structured portfolio analysis under SharpeOmega ratio

    Hentati, Rania; Prigent, Jean-Luc

    2014-01-01

    This paper deals with performance measurement of financial struc- tured products. For this purpose, we introduce the SharpeOmega ratio, based on put as downside risk measure. This allows to take account of the asymmetry of the return probability distribution. We provide gen- eral results about the optimization of some standard structured portfolios with respect to the SharpeOmega ratio. We determine in particular the optimal combination of risk free, stock and calljput instruments with re- sp...

  2. Beam asymmetry in near threshold omega photoproduction off the proton

    Klein, Frank; Bacelar, J C S; Bantes, B; Bartholomy, O; Bayadilov, D; Beck, R; Beloglasov, Yu A; Castelijns, R; Credé, V; Dutz, H; Ehmanns, A; Elsner, D; Essig, K; Ewald, R; Fabry, I; Fuchs, M; Funke, C; Gregor, R; Gridnev, A B; Gutz, E; Hoffgen, S; Hoffmeister, P; Horn, I; Jaegle, I; Junkersfeld, J; Kalinowsky, H; Kammer, S; Kleber, V; Klein, Friedrich; Klempt, E; Konrad, M; Kotulla, M; Krusche, B; Lang, M; Löhner, H; Lopatin, I V; Lotz, J; Lugert, S; Menze, D; Mertens, T; Messchendorp, J G; Metag, V; Morales, C; Nanova, M; Nikonov, V A; Novinski, D; Novotny, R; Ostrick, M; Pant, L M; Van Pee, H; Pfeiffer, M; Radkov, A; Roy, A; Sarantsev, A V; Schadmand, S; Schmidt, C; Schmieden, H; Schoch, B; Shende, S V; Sokhoyan, V; Sule, A; Sumachev, V V; Szczepanek, T; Thoma, U; Trnka, D; Varma, R; Walther, D; Weinheimer, C; Wendel, C

    2008-01-01

    The photoproduction of omega mesons off protons has been studied at the Bonn ELSA accelerator from threshold to E_gamma = 1700 MeV. Linearly polarized beams were produced via coherent bremsstrahlung. Large photon asymmtries in excess of 50% were obtained, whereas the pion asymmetries from omega \\to pi^0 gamma are close to zero. The asymmetries do characteristically depend on Theta_{cm} rather than |t| and indicate s-channel resonance formation on top of t-channel exchange processes.

  3. Enzymatic Modification of Antioxidants Towards Omega-3 Oil Protection

    Yang, Zhiyong

    2011-01-01

    This PhD dissertation entitled “Enzymatic Modification of Antioxidants Towards Omega-3 Oil Protection” is primarily focused on synthesize of novel antioxidant from natural sources for better protection of oxidation-prone omega 3 oil. Selected phenolic acids were conjugated with fatty alcohols in different chain length and triacylglycerol (TAG). Several synthesis strategies were evaluated. Synthesis of lipophilic phenolic fatty alcohols esters were initially conducted in a binary organic solve...

  4. Relations between distributional, Li-Yorke and {omega} chaos

    Guirao, Juan Luis Garcia [Departamento de Matematica Aplicada y Estadistica, Universidad Politecnica de Cartagena, C/Paseo Alfonso XIII, 30203-Cartagena (Region de Murcia) (Spain)]. E-mail: juan.garcia@upct.es; Lampart, Marek [Mathematical Institute at Opava, Silesian University at Opava, Na Rybnicku 1, 746 01 Opava (Czech Republic)]. E-mail: marek.lampart@math.slu.cz

    2006-05-15

    The forcing relations between notions of distributional, Li-Yorke and {omega} chaos were studied by many authors. In this paper we summarize all known connections between these three different types of chaos and fulfill the results for general compact metric spaces by the construction of a selfmap on a compact perfect set which is {omega} chaotic, not distributionally chaotic and has zero topological entropy.

  5. Complicial structures in the nerves of omega-categories

    Steiner, R.

    2013-01-01

    It is known that strict omega-categories are equivalent through the nerve functor to complicial sets and to sets with complicial identities. It follows that complicial sets are equivalent to sets with complicial identities. We discuss these equivalences. In particular we give a conceptual proof that the nerves of omega-categories are complicial sets, and a direct proof that complicial sets are sets with complicial identities.

  6. The CERN omega spectrometer. 25 years of physics. Proceedings

    The OMEGA spectrometer facility was closed down at the end of 1996. This was a necessary sacrifice in order to free resources for the construction of the Large Hadron Collider, which is now so closely associated with CERN's future. On December 10th, a symposium was organized at CERN to review physics at OMEGA. This report brings together the talks which were presented on that occasion. It starts with an introduction and a list of all the experiments at the facility. (orig.)

  7. La importancia de los ácidos grasos en la leche materna y en las fórmulas lácteas

    Vega, S.

    2012-06-01

    Full Text Available The best choice for feeding the newborn child is breast milk, and when it is not possible to breastfeed a baby, the breast milk is replaced by lacteal formula, which is why numerous studies focus their attention on the analysis of the diverse components of baby formula as well as functions in the breastfed baby. Fatty acids are components of great nutritional importance in the fetus and in the newborn child. Nowadays it is estimated that the fetus, during the last trimester of the gestational period and the newborn child, during the first six months of life, need a great contribution of araquidonic and docosahexaenoic acids, due to the fact that the speed of transformation of the predecessors to the hepatic level are not sufficient to cover the metabolic requirements of these fatty acids and it is the mother who contributes them through placental transport during gestation and her milk during lactation. The Organization of Food and Agriculture (FAO, the World Health Organization (WHO, the European Society of Gastroenterology, Hepatology and Pediatric Nutrition (ESPGHAN and the American Academy of Pediatrics recommend that lacteal formula imitate the composition of the breast milk, especially in the fatty polyunsaturated acids (PUFA.

    El alimento natural por excelencia para el recién nacido es la leche materna, cuando no es posible darla se sustituye por fórmulas lácteas, por lo que numerosos estudios enfocan su interés en el análisis de los diversos componentes de éstas, y sus funciones en el lactante. Los ácidos grasos son componentes de gran importancia nutricional tanto en el feto como en el recién nacido. Actualmente se estima que el feto, durante el último tercio del periodo gestacional y el recién nacido, durante los primeros seis meses de vida, requieren un gran aporte de ácidos araquidónico y docosahexaenoico, debido a que la velocidad de transformación de los precursores a nivel hepático no son suficientes para

  8. Study of the decay B0bar -> D* omega pi

    Aubert, B.

    2006-04-24

    We report on a study of the decay {bar B}{sup 0} {yields} D*{sup +}{omega}{pi}{sup -} with the BABAR detector at the PEP-II B-factory at the Stanford Linear Accelerator Center. Based on a sample of 232 million B{bar B} decays, we measure the branching fraction {Beta}({bar B}{sup 0} {yields} D*{sup +}{omega}{pi}{sup -}) = (2.88 {+-} 0.21(stat.) {+-} 0.31(syst.)) x 10{sup -3}. We study the invariant mass spectrum of the {omega}{pi}{sup -} system in this decay. This spectrum is in good agreement with expectations based on factorization and the measured spectrum in {tau}{sup -} {yields} {omega}{pi}{sup -} {nu}{sub {tau}}. We also measure the polarization of the D*{sup +} as a function of the {omega}{pi}{sup -} mass. In the mass region 1.1 to 1.9 GeV we measure the fraction of longitudinal polarization of the D*{sup +} to be {Lambda}{sub L}/{Lambda} = 0.654 {+-} 0.042(stat.) {+-} 0.016(syst.). This is in agreement with the expectations from heavy-quark effective theory and factorization assuming that the decay proceeds as {bar B}{sup 0} {yields} D*{sup +}{rho}(1450), {rho}(1450) {yields} {omega}{pi}{sup -}.

  9. Experimental constraints on the $\\omega$-nucleus real potential

    Friedrich, S; Metag, V; Bayadilov, D; Bantes, B; Beck, R; Beloglazov, Y A; Böse, S; Brinkmann, K -T; Challand, Th; Crede, V; Dahlke, T; Dietz, F; Drexler, P; Eberhardt, H; Elsner, D; Ewald, R; Fornet-Ponse, K; Frommberger, F; Funke, Ch; Gottschall, M; Gridnev, A; Grüner, M; Gutz, E; Hammann, Ch; Hammann, D; Hannappel, J; Hartmann, J; Hillert, W; Hirenzaki, S; Hoffmeister, P; Honisch, Ch; Jaegle, I; Kaiser, D; Kalinowsky, H; Kammer, S; Keshelashvili, I; Kleber, V; Klein, F; Krusche, B; Lang, M; Lopatin, I V; Maghrbi, Y; Nanova, M; Nagahiro, H; Müller, J; Odenthal, T; Piontek, D; Rostomyan, T; Schaepe, S; Schmidt, Ch; Schmieden, H; Schmitz, R; Seifen, T; Thiel, A; Thoma, U; van Pee, H; Walther, D; Weil, J; Wendel, Ch; Wiedner, U; Wilson, A; Winnebeck, A; Zenke, F

    2014-01-01

    In a search for $\\omega$ mesic states, the production of $\\omega$-mesons in coincidence with forward going protons has been studied in photon induced reactions on $^{12}$C for incident photon energies of 1250 - 3100 MeV. The $\\pi^0 \\gamma$ pairs from decays of bound or quasi-free $\\omega$-mesons have been measured with the CBELSA/TAPS detector system in coincidence with protons registered in the MiniTAPS forward array. Structures in the total energy distribution of the $\\pi^0 \\gamma$ pairs, which would indicate the population and decay of bound $\\omega~^{11}$B states, are not observed. The $\\pi^0 \\gamma$ cross section of 0.3 nb/MeV/sr observed in the bound state energy regime between -100 and 0 MeV may be accounted for by yield leaking into the bound state regime because of the large in-medium width of the $\\omega$-meson. A comparison of the measured total energy distribution with calculations suggests the real part $V_0$ of the $\\omega~^{11}$B potential to be small and only weakly attractive with $V_0(\\rho=\\...

  10. Rapid lipid enrichment in omega3 fatty acids: plasma data.

    Carpentier, Yvon A; Peltier, Sebastien; Portois, Laurence; Sener, Abdullah; Malaisse, Willy J

    2008-03-01

    The bolus intravenous injection of a novel medium-chain triglyceride:fish oil emulsion to normal subjects was recently reported to enrich within 60 min the phospholipid content of leucocytes and platelets in long-chain polyunsaturated omega3 fatty acids. The present study, conducted in second generation omega3-depleted rats, aimed at investigating whether such a procedure may also increase within 60 min the phospholipid content of omega3 fatty acids in cells located outwards the bloodstream, in this case liver cells, and whether this coincides with correction of the perturbation in the liver triglyceride fatty acid content and profile otherwise prevailing in these rats. This first report deals mainly with the fatty acid pattern of plasma lipids in male omega3-depleted rats that were non-injected or injected with either the omega3-rich emulsion or a control medium-chain triglyceride:olive oil emulsion. The results provide information on the fate of the exogenous lipids present in the lipid emulsions and injected intravenously 60 min before sacrifice. Moreover, in the uninjected omega3-depleted rats the comparison between individual plasma and liver measurements indicated positive correlations in the fatty acid profile of phospholipids and triglycerides. PMID:18288383

  11. Omega-3 Fatty Acids and Skeletal Muscle Health

    Stewart Jeromson

    2015-11-01

    Full Text Available Skeletal muscle is a plastic tissue capable of adapting and mal-adapting to physical activity and diet. The response of skeletal muscle to adaptive stimuli, such as exercise, can be modified by the prior nutritional status of the muscle. The influence of nutrition on skeletal muscle has the potential to substantially impact physical function and whole body metabolism. Animal and cell based models show that omega-3 fatty acids, in particular those of marine origin, can influence skeletal muscle metabolism. Furthermore, recent human studies demonstrate that omega-3 fatty acids of marine origin can influence the exercise and nutritional response of skeletal muscle. These studies show that the prior omega-3 status influences not only the metabolic response of muscle to nutrition, but also the functional response to a period of exercise training. Omega-3 fatty acids of marine origin therefore have the potential to alter the trajectory of a number of human diseases including the physical decline associated with aging. We explore the potential molecular mechanisms by which omega-3 fatty acids may act in skeletal muscle, considering the n-3/n-6 ratio, inflammation and lipidomic remodelling as possible mechanisms of action. Finally, we suggest some avenues for further research to clarify how omega-3 fatty acids may be exerting their biological action in skeletal muscle.

  12. Study of the decay B0bar -> D*+ omega pi-

    Aubert, B; Bóna, M; Boutigny, D; Couderc, F; Karyotakis, Yu; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A; Graugès-Pous, E; Palano, A; Pappagallo, M; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S; Eigen, G; Ofte, I; Stugu, B; Abrams, G S; Battaglia, M; Brown, D N; Button-Shafer, J; Cahn, R N; Charles, E; Day, C T; Gill, M S; Groysman, Y; Jacobsen, R G; Kadyk, J A; Kerth, L T; Kolomensky, Yu G; Kukartsev, G; Lynch, G; Mir, L M; Oddone, P J; Orimoto, T J; Pripstein, M; Roe, N A; Ronan, M T; Wenzel, W A; Barrett, M; Ford, K E; Harrison, T J; Hart, A J; Hawkes, C M; Morgan, S E; Watson, A T; Goetzen, K; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Peters, K; Schröder, T; Steinke, M; Boyd, J T; Burke, J P; Cottingham, W N; Walker, D; Çuhadar-Dönszelmann, T; Fulsom, B G; Hearty, C; Knecht, N S; Mattison, T S; McKenna, J A; Khan, A; Kyberd, P; Saleem, M; Teodorescu, L; Blinov, V E; Bukin, A D; Druzhinin, V P; Golubev, V B; Onuchin, A P; Serednyakov, S I; Skovpen, Yu I; Solodov, E P; Todyshev, K Yu; Best, D S; Bondioli, M; Bruinsma, M; Chao, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, A J; Lund, P; Mandelkern, M A; Mommsen, R K; Röthel, W; Stoker, D P; Abachi, S; Buchanan, C; Foulkes, S D; Gary, J W; Long, O; Shen, B C; Wang, K; Zhang, L; Hadavand, H K; Hill, E J; Paar, H P; Rahatlou, S; Sharma, V; Berryhill, J W; Campagnari, C; Cunha, A; Dahmes, B; Hong, T M; Kovalskyi, D; Richman, J D; Beck, T W; Eisner, A M; Flacco, C J; Heusch, C A; Kroseberg, J; Lockman, W S; Nesom, G; Schalk, T; Schumm, B A; Seiden, A; Spradlin, P; Williams, D C; Wilson, M G; Albert, J; Chen, E; Dvoretskii, A; Hitlin, D G; Narsky, I; Piatenko, T; Porter, F C; Ryd, A; Samuel, A; Andreassen, R; Mancinelli, G; Meadows, B T; Sokoloff, M D; Blanc, F; Bloom, P C; Chen, S; Ford, W T; Hirschauer, J F; Kreisel, A; Nauenberg, U; Olivas, A; Ruddick, W O; Smith, J G; Ulmer, K A; Wagner, S R; Zhang, J; Chen, A; Eckhart, E A; Soffer, A; Toki, W H; Wilson, R J; Winklmeier, F; Zeng, Q; Altenburg, D D; Feltresi, E; Hauke, A; Jasper, H; Spaan, B; Brandt, T; Klose, V; Lacker, H M; Mader, W F; Nogowski, R; Petzold, A; Schubert, J; Schubert, K R; Schwierz, R; Sundermann, J E; Volk, A; Bernard, D; Bonneaud, G R; Grenier, P; Latour, E; Thiebaux, C; Verderi, M; Bard, D J; Clark, P J; Gradl, W; Muheim, F; Playfer, S; Robertson, A I; Xie, Y; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Luppi, E; Negrini, M; Petrella, A; Piemontese, L; Prencipe, E; Anulli, F; Baldini-Ferroli, R; Calcaterra, A; De Sangro, R; Finocchiaro, G; Pacetti, S; Patteri, P; Peruzzi, I M; Piccolo, M; Rama, M; Zallo, A; Buzzo, A; Capra, R; Contri, R; Lo Vetere, M; Macri, M M; Monge, M R; Passaggio, S; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Brandenburg, G; Chaisanguanthum, K S; Morii, M; Wu, J; Dubitzky, R S; Marks, J; Schenk, S; Uwer, U; Bhimji, W; Bowerman, D A; Dauncey, P D; Egede, U; Flack, R L; Gaillard, J R; Nash, J A; Nikolich, M B; Panduro-Vazquez, W; Chai, X; Charles, M J; Mallik, U; Meyer, N T; Ziegler, V; Cochran, J; Crawley, H B; Dong, L; Eyges, V; Meyer, W T; Prell, S; Rosenberg, E I; Rubin, A E; Gritsan, A V; Fritsch, M; Schott, G; Arnaud, N; Davier, M; Grosdidier, G; Höcker, A; Le Diberder, F R; Lepeltier, V; Lutz, A M; Oyanguren, A; Pruvot, S; Rodier, S; Roudeau, P; Schune, M H; Stocchi, A; Wang, W F; Wormser, G; Cheng, C H; Lange, D J; Wright, D M; Chavez, C A; Forster, I J; Fry, J R; Gabathuler, E; Gamet, R; George, K A; Hutchcroft, D E; Payne, D J; Schofield, K C; Touramanis, C; Bevan, A J; Di Lodovico, F; Menges, W; Sacco, R; Brown, C L; Cowan, G; Flächer, H U; Hopkins, D A; Jackson, P S; McMahon, T R; Ricciardi, S; Salvatore, F; Davis, C L; Allison, J; Barlow, N R; Barlow, R J; Chia, Y M; Edgar, C L; Kelly, M P; Lafferty, G D; Naisbit, M T; Williams, J C; Yi, J I; Chen, C; Hulsbergen, W D; Jawahery, A; Lae, C K; Roberts, D A; Simi, G; Blaylock, G; Dallapiccola, C; Hertzbach, S S; Li, X; Moore, T B; Saremi, S; Stängle, H; Willocq, S Y; Cowan, R; Koeneke, K; Sciolla, G; Sekula, S J; Spitznagel, M; Taylor, F; Yamamoto, R K; Kim, H; Patel, P M; Potter, C T; Robertson, S H; Lazzaro, A; Lombardo, V; Palombo, F; Bauer, J M; Cremaldi, L; Eschenburg, V; Godang, R; Kroeger, R; Reidy, J; Sanders, D A; Summers, D J; Zhao, H W; Brunet, S; Côté, D; Simard, M; Taras, P; Viaud, F B; Nicholson, H; Cavallo, N; De Nardo, Gallieno; Del Re, D; Fabozzi, F; Gatto, C; Lista, L; Monorchio, D; Paolucci, P; Piccolo, D; Sciacca, C; Baak, M; Bulten, H; Raven, G; Snoek, H L; Jessop, C P; LoSecco, J M; Allmendinger, T; Benelli, G; Gan, K K; Honscheid, K; Hufnagel, D; Jackson, P D; Kagan, H; Kass, R; Pulliam, T; Rahimi, A M; Ter-Antonian, R; Wong, Q K; Blount, N L; Brau, J E; Frey, R; Igonkina, O; Lu, M; Rahmat, R; Sinev, N B; Strom, D; Strube, J; Torrence, E; Galeazzi, F; Gaz, A; Margoni, M; Morandin, M; Pompili, A; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Voci, C; Benayoun, M; Chauveau, J; David, P; Del Buono, L; La Vaissière, C de; Hamon, O; Hartfiel, B L; John, M J J; Leruste, P; Malcles, J; Ocariz, J; Roos, L; Therin, G; Behera, P K; Gladney, L; Panetta, J; Biasini, M; Covarelli, R; Pioppi, M; Angelini, C; Batignani, G; Bettarini, S; Bucci, F; Calderini, G; Carpinelli, M; Cenci, R; Forti, F; Giorgi, M A; Lusiani, A; Marchiori, G; Mazur, M A; Morganti, M; Neri, N; Paoloni, E; Rizzo, G; Walsh, J; Haire, M; Judd, D; Wagoner, D E; Biesiada, J; Danielson, N; Elmer, P; Lau, Y P; Lü, C; Olsen, J; Smith, A J S; Telnov, A V; Bellini, F; Cavoto, G; D'Orazio, A; Di Marco, E; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Li Gioi, L; Mazzoni, M A; Morganti, S; Piredda, G; Polci, F; Safai-Tehrani, F; Voena, C; Ebert, M; Schröder, H; Waldi, R; Adye, T; De Groot, N; Franek, B; Olaiya, E O; Wilson, F F; Emery, S; Gaidot, A; Ganzhur, S F; Hamel de Monchenault, G; Kozanecki, Witold; Legendre, M; Mayer, B; Vasseur, G; Yéche, C; Zito, M; Park, W; Purohit, M V; Weidemann, A W; Wilson, J R; Allen, M T; Aston, D; Bartoldus, R; Bechtle, P; Berger, N; Boyarski, A M; Claus, R; Coleman, J P; Convery, M R; Cristinziani, M; Dingfelder, J C; Dong, D; Dorfan, J; Dubois-Felsmann, G P; Dujmic, D; Dunwoodie, W M; Field, R C; Glanzman, T; Gowdy, S J; Graham, M T; Halyo, V; Hast, C; Hrynóva, T; Innes, W R; Kelsey, M H; Kim, P; Kocian, M L; Leith, D W G S; Li, S; Libby, J; Luitz, S; Lüth, V; Lynch, H L; MacFarlane, D B; Marsiske, H; Messner, R; Müller, D R; O'Grady, C P; Ozcan, V E; Perazzo, A; Perl, M; Ratcliff, B N; Roodman, A; Salnikov, A A; Schindler, R H; Schwiening, J; Snyder, A; Stelzer, J; Su, D; Sullivan, M K; Suzuki, K; Swain, S K; Thompson, J M; Vavra, J; Van Bakel, N; Weaver, M; Weinstein, A J R; Wisniewski, W J; Wittgen, M; Wright, D H; Yarritu, A K; Yi, K; Young, C C; Burchat, P R; Edwards, A J; Majewski, S A; Petersen, B A; Roat, C; Wilden, L; Ahmed, S; Alam, M S; Bula, R; Ernst, J A; Jain, V; Pan, B; Saeed, M A; Wappler, F R; Zain, S B; Bugg, W; Krishnamurthy, M; Spanier, S M; Eckmann, R; Ritchie, J L; Satpathy, A; Schilling, C J; Schwitters, R F; Izen, J M; Kitayama, I; Lou, X C; Ye, S; Bianchi, F; Gallo, F; Gamba, D; Bomben, M; Bosisio, L; Cartaro, C; Cossutti, F; Della Ricca, G; Dittongo, S; Grancagnolo, S; Lanceri, L; Vitale, L; Azzolini, V; Martínez-Vidal, F; Banerjee, Sw; Bhuyan, B; Brown, C M; Fortin, D; Hamano, K; Kowalewski, R V; Nugent, I M; Roney, J M; Sobie, R J; Back, J J; Harrison, P F; Latham, T E; Mohanty, G B; Band, H R; Chen, X; Cheng, B; Dasu, S; Datta, M; Eichenbaum, A M; Flood, K T; Hollar, J J; Johnson, J R; Kutter, P E; Li, H; Liu, R; Mellado, B; Mihályi, A; Mohapatra, A K; Pan, Y; Pierini, M; Prepost, R; Tan, P; Wu, S L; Yu, Z; Neal, H

    2006-01-01

    We report on a study of the decay B0bar -> D*+ omega pi- with the BABAR detector at the PEP-II B-factory at the Stanford Linear Accelerator Center. Based on a sample of 232 million BBbar decays, we measure the branching fraction BF(B0bar -> D*+ omega pi-) = (2.88 +/- 0.21(stat.) +/- 0.31(syst.)) \\times 10^{-3}. We study the invariant mass spectrum of the omega pi- system in this decay. This spectrum is in good agreement with expectations based on factorization and the measured spectrum in tau- -> omega pi- nu_tau. We also measure the polarization of the D*+ as a function of the omega pi- mass. In the mass region 1.1 to 1.9 GeV we measure the fraction of longitudinal polarization of the D*+ to be Gamma_L/Gamma = 0.654 +/- 0.042(stat.) +/- 0.016(syst.). This is in agreement with the expectations from heavy-quark effective theory and factorization assuming that the decay proceeds as B0bar -> D*+ rho(1450), rho(1450) -> omega pi-.

  13. Relación entre las características de la pastura y el contenido de ácido linoleico conjugado (ALC en la leche Relação entre as características da pastagem e o conteúdo de acido linoleico conjugado (ALC no leite Pasture traits and conjugated linoleic acid (CLA content in milk

    Javier M León Caviedes

    2011-03-01

    Full Text Available La presencia de compuestos bioactivos en la grasa de los productos derivados de los rumiantes ha despertado gran interés porque se le atribuyen efectos preventivos frente a enfermedades de alto impacto en la población. Se ha demostrado que los sistemas de alimentación basados en pastoreo incrementan la presencia de ácidos grasos oliinsaturados y específicamente el acido linoleico conjugado ALC en la leche, lo cual se constituye en ventaja comparativa para la leche producida en Colombia. Los sistemas especializados de producción de leche en el país se basan en el uso de monocultivos de kikuyo y/o ryegrass,pasturas que demandan una alta cantidad de fertilizante nitrogenado para mantener su producción. Esta situación resta sostenibilidad al sistema productivo y no genera valor agregado sobre el producto. En el país se ha venido trabajando en la búsqueda de nuevos materiales forrajeros seleccionados por adaptación, compatibilidad y productividad. De esta evaluación ha resultado materiales como Lotus uliginosus, una leguminosa que se ha asociado a las pasturas de kikuyo y ha dado buenos resultados en términos de producción y calidad de leche, además que la presencia de una leguminosa en la pastura permite minimizarla demanda de fertilizante nitrogenado. Resultados de diferentes investigaciones han evidenciado cómo la presencia de leguminosas en las pasturas incrementa el contenido de esos compuestos benéficos para la salud humana, este efecto está relacionado con la presencia de metabolitos secundarios que modifican los patrones de biohidrogenación ruminal incrementando la producción de precursores de ALC. Se abordarán los factores relacionados con el manejo de las pasturas que afectan la composición de ácidos grasos de la leche con especial atención a la edad, especie y condiciones de manejo como la fertilización nitrogenada y el efecto que presentan las pasturas asociadas con leguminosas templadas.Relação entre alimenta

  14. Shape invariance symmetries for quantum states of the superpotentials Atanh{omega}y+B/A and -Acot{omega}{theta}+Bcsc{omega}{theta}

    Fakhri, H

    2004-04-26

    Using shape invariance symmetries with respect to two different parameters n and m, we derive the general forms of the partner Hamiltonians for the superpotentials Atanh{omega}y+B/A and -Acot{omega}{theta}+Bcsc{omega}{theta}, respectively. For the first model in a special case and the second model in the general case, the parameters m and n play the role of the quantization numbers for the spectrum and quantum states as finite and infinite ones, respectively. We also get a type of the shape invariance symmetry which is realized by the operators shifting only m and only n, respectively, for two models. Furthermore, for the models, other shape invariance symmetries based on the operators shifting the indices n and m of quantum states simultaneously and inversely as well as simultaneously and agreeably are derived.

  15. Supernova Hydrodynamics on the Omega Laser

    R. Paul Drake

    2004-01-16

    (B204)The fundamental motivation for our work is that supernovae are not well understood. Recent observations have clarified the depth of our ignorance, by producing observed phenomena that current theory and computer simulations cannot reproduce. Such theories and simulations involve, however, a number of physical mechanisms that have never been studied in isolation. We perform experiments, in compressible hydrodynamics and radiation hydrodynamics, relevant to supernovae and supernova remnants. These experiments produce phenomena in the laboratory that are believed, based on simulations, to be important to astrophysics but that have not been directly observed in either the laboratory or in an astrophysical system. During the period of this grant, we have focused on the scaling of an astrophysically relevant, radiative-precursor shock, on preliminary studies of collapsing radiative shocks, and on the multimode behavior and the three-dimensional, deeply nonlinear evolution of the Rayleigh-Taylor (RT) instability at a decelerating, embedded interface. These experiments required strong compression and decompression, strong shocks (Mach {approx}10 or greater), flexible geometries, and very smooth laser beams, which means that the 60-beam Omega laser is the only facility capable of carrying out this program.

  16. KULL Simulations of OMEGA Radiation Flow Experiments

    Kallman, J.; MacLaren, S.; Baker, K.; Amala, P.; Lewis, K.; Zika, M.

    2012-10-01

    The problem of radiation flow in a right circular cylinder is of interest for the verification and validation of radiation codes, which utilize several mechanisms for determining radiation transport (diffusion, discrete ordinates, and Monte Carlo). This flow is analogous to free molecular flow in a similar geometry.footnotetextE. Garelis and T.E. Wainwright. Phys. Fluids. 16, 4 (1973) A series of experiments were conducted on the OMEGA laser in cases with a low-density heated cylindrical wall. The experiments consisted of a 1.6 mm diameter gold hohlraum containing an on-axis 700 μm diameter SiO2 cylinder contained in an 80 μm thick carbon foam tube. Five shots panning three test cases were used: the nominal geometry described above (heated wall), the carbon tube replaced with solid gold, and a gold cap placed on the laser end of the cylinder assembly to block axial radiation flow. Simulations of each experimental target type were run with the KULL radiation code, and were used to compare the different radiation transport packages in KULL by employing synthetic diagnostics to match the experimental DANTE cavity radiation temperature time history and soft x-ray images taken by a streak camera imaging the far end of the hohlraum.

  17. Omega-3 Fatty Acids and FFAR4

    Da Young eOh

    2014-07-01

    Full Text Available The beneficial roles of omega-3 fatty acids (ω3-FAs on obesity, type 2 diabetes, and other metabolic diseases are well known. Most of these effects can be explained by their anti-inflammatory effects, triggered through their receptor, G protein-coupled receptor 120 (GPR120 activation. Although the whole mechanism of action is not fully described yet, it has been shown that stimulation of ω3-FA to GPR120 is followed by receptor phosphorylation. This makes GPR120 be capable of interacting to beta-arrestin-2, which in turn results in association, of beta-arrestin-2 to TAB1. This stealing of an important partaker of the inflammatory cascade, leads to interruption of the pathway, resulting in reduced inflammation. Besides this regulation of the anti-inflammatory response, GPR120 signaling also has been shown to regulate glucose homeostasis, adiposity, gastrointestinal peptide secretion, and taste preference. In this review we summarize the current knowledge about the interaction of ω3-FAs with GPR120 and the consequent opportunities for the application of ω3-FAs and possible GPR120 targets.

  18. Source geometric considerations for OMEGA Dante measurementsa)

    May, M. J.; Patterson, J. R.; Sorce, C.; Widmann, K.; Fournier, K. B.; Perez, F.

    2012-10-01

    The Dante is a 15 channel filtered diode array which is installed on the OMEGA laser facility at the Laboratory for Laser Energetics, University of Rochester. The system yields the spectrally and temporally resolved radiation flux from 50 eV to 10 keV from various targets (i.e., Hohlraum, gas pipes, etc.). The absolute flux is determined from the radiometric calibration of the x-ray diodes, filters, and mirrors and an unfold algorithm applied to the recorded voltages from each channel. The unfold algorithm assumes an emitting source that is spatially uniform and has a constant area as a function of photon energy. The emitting x-ray source is usually considered to be the laser entrance hole (LEH) of a given diameter for Hohlraum type targets or the effective wall area of high conversion efficiency K-shell type targets. This assumption can be problematic for several reasons. High intensity regions or "hot spots" in the x-ray are observed where the drive laser beams strike the target. The "hot spots" create non-uniform emission seen by the Dante. Additionally, thinned walled (50 μm) low-Z targets (C22H10N2O5) have an energy dependent source size since the target's walls will be fully opaque for low energies (E < 2-3 keV) yet fully transmissive at higher energies. Determining accurate yields can be challenging for these types of targets. Discussion and some analysis will be presented.

  19. Uncertainty analysis technique for OMEGA Dante measurementsa)

    May, M. J.; Widmann, K.; Sorce, C.; Park, H.-S.; Schneider, M.

    2010-10-01

    The Dante is an 18 channel x-ray filtered diode array which records the spectrally and temporally resolved radiation flux from various targets (e.g., hohlraums, etc.) at x-ray energies between 50 eV and 10 keV. It is a main diagnostic installed on the OMEGA laser facility at the Laboratory for Laser Energetics, University of Rochester. The absolute flux is determined from the photometric calibration of the x-ray diodes, filters and mirrors, and an unfold algorithm. Understanding the errors on this absolute measurement is critical for understanding hohlraum energetic physics. We present a new method for quantifying the uncertainties on the determined flux using a Monte Carlo parameter variation technique. This technique combines the uncertainties in both the unfold algorithm and the error from the absolute calibration of each channel into a one sigma Gaussian error function. One thousand test voltage sets are created using these error functions and processed by the unfold algorithm to produce individual spectra and fluxes. Statistical methods are applied to the resultant set of fluxes to estimate error bars on the measurements.

  20. Impact behaviour of omega stiffened composite panels

    Riccio, A.; Ricchiuto, R.; Saputo, S.; Raimondo, A.; Caputo, F.; Antonucci, V.; Lopresto, V.

    2016-02-01

    The mechanical response of reinforced composite structures under impact loads is particularly challenging owing to the rising of multiple and simultaneous failure phenomena. Indeed, low velocity impacts may produce intra-laminar damages, like fibre breakage and matrix cracking, and inter-laminar damages, such as delaminations and skin-stringer debonding. As already remarked, these failure phenomena often take place simultaneously, leading to a significant reduction in strength and stability of the composite components. In this paper, the behaviour of stiffened composite panels, with omega shaped stringers, under low velocity impacts is numerically investigated by means of non-linear explicit FEM analyses. Different impact energy levels are considered and correlation with experimental data is provided, in terms of impact force, displacement and energy. A sensitivity analysis has been performed to investigate the influence of numerical models' approximations on the accuracy of the obtained numerical results. Models with an increasing level of damage simulation details have been adopted to study the effects of combined and separated intra-laminar and inter-laminar failures providing an interesting insight on the modelling requirements for an accurate simulation of the investigated phenomena.

  1. Omega_lambda, Omega_m ! We know you're in there. We've got you surrounded. Come out with your hands up

    Lineweaver, Charles H.

    1998-01-01

    Recent cosmic microwave background measurements combined with recent supernovae limits and other observational data have ambushed Omega_lambda and Omega_m. These cosmological culprits are trapped in a small pocket of parameter space: Omega_lambda = 0.62 +/- 0.16 and Omega_m = 0.24 +/- 0.10. If this is correct then an unknown 2/3 of the Universe has been identified.

  2. Ácidos grasos trans en la nutrición de niños con trastornos neurológicos

    E. Cortés

    2013-08-01

    Full Text Available Introducción: Los ácidos grasos trans (AGT están presentes en diversos alimentos, y son la única fuente de los mismos en humanos. Su presencia en concentraciones elevadas supone un factor de riesgo para la salud, por lo que se ven implicados en toda una serie de eventos cardiovasculares, inflamatorios, etc. Por ello, se han adoptado medidas para su disminución en la dieta. Como objetivo, se pretende determinarlos en el suero y en los fosfolípidos de las membranas, tanto en los niños sanos, como en los que padecen alteraciones neurológicas. Material y métodos: Se han analizado los AGT de 34 niños sanos y de 374 con diversas patologías neurológicas. Se han utilizado muestras de suero y de células sanguíneas, para lo que se lleva a cabo una extracción lipídica, con separación de los fosfolípidos de las membranas de las células, metilación de los ácidos grasos, separación mediante cromatografía de gases y, finalmente, cuantificación mediante detector de masas. Los datos han sido procesados estadísticamente. Resultados: La distribución de los AGT y su suma no tienen una distribución normal, por lo que se han efectuado pruebas no paramétricas. Los valores son mayores en suero que en los fosfolípidos de membrana y con una correlación débil, aunque significativa. El tC18:1 tiene una proporción doble en los niños con trastornos neurológicos, frente a los niños sanos, tanto en el suero como en los fosfolípidos de membrana, con diferencias significativas. Discusión: La mayor proporción de AGT en el grupo de niños con trastornos neurológicos está causada, sin duda, por un incremento en su ingesta, lo que se debe a una alimentación menos adecuada.

  3. Omega-3 and omega-6 content of medicinal foods for depressed patients: implications from the Iranian Traditional Medicine

    Mandana Tavakkoli-Kakhki

    2014-06-01

    Full Text Available Objectives: Considering the increasing prevalence of depression in modern societies and the positive effects of omega-3 polyunsaturated fatty acids on depression, this study aims to investigate the omega-3 and omega-6 content of various foodstuffs, prescribed or prohibited by Iranian Traditional Medicine (ITM. Materials and Methods: Firstly, reliable sources of Iranian Traditional Medicine were reviewed in order to identify the prescribed and prohibited foodstuffs for depressed patients. Afterwards, according to the online database of United States Department of Agriculture (URL: http://ndb.nal.usda.gov/ndb/search/list, the ratio of linoleic acid to alpha linolenic acid (as representatives of omega-6 and omega-3, respectively was identified in each foodstuff. Finally, the ratios of omega-6 to omega-3 were compared between seven food groups of vegetables, fruits, dry goods, high protein products, dairies, breads, and spices. Results: Based on the resources of Iranian Traditional Medicine, the following foods are prescribed for depressed patients: basil, coriander, spinach, lettuce, squash, peppermint, dill, chicory, celery, beet, quince, cucumber, watermelon, grape, peach, pomegranate, banana, apple, currant, pistachio, dried fig, almond, egg, chicken, lamb, trout, milk, bread without bran,saffron, oregano, and coriander seeds. On the other hand, cabbage, eggplant, onion, garlic, broad beans, lentils, beef, whole wheat bread, and mustard are prohibited. It should be noted that omega-3 content in some prescribed foods is more than that of the prohibited ones. Conclusion: The present study showed that mint, basil, spinach, lettuce, squash, lamb, saffron, oregano, cucumber, pistachio, milk, and also wild trout can be considered as medicinal foods for depressed patients.

  4. Determination of the load state of lead-acid batteries using neural networks; Determinacion del estado de carga de baterias plomo-acido utilizando redes neuronales

    Cristin V, Miguel A; Ortega S, Cesar A [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2005-07-01

    The charge of lead-acid batteries (LAB), as in any other type of batteries, consists of replacing the energy consumed during the discharge. Nevertheless, as no physical or chemical process is good enough to totality recharge a battery, it is necessary to supply to it more than the 100% of the energy demanded during its discharge. A critical factor to make a suitable load control of the batteries is to determine its own state of load. That is to say, to have an efficient load control, it is necessary to count on means that allow to accurately determining the residual capacity of the battery to deliver load. This one is the one of the aspects of greater interest in the research centers around world. For this reason, in this work it was pretended to develop a calculation algorithm of the state of load of batteries based on a fuzzy-neural network that could calculate the state of load without using the battery current as an input. This is because one of the main problems for the designers of battery load controllers is the correct supervision of the current that circulates around the system in all the rank of operation of the same one because the sensors do not have a linear behavior. [Spanish] La recarga de baterias plomo-acido (BPA), como cualquier otro tipo de baterias, consiste en reponer la energia consumida durante la descarga. Sin embargo, como ningun proceso fisico o quimico es lo bastante eficiente para recargar a totalidad una bateria, es necesario suministrarle mas del 100% de la energia demandada durante su descarga. Un factor critico para realizar un adecuado control de carga de las baterias, es determinar su propio estado de carga. Es decir, para tener un control de carga eficiente, es necesario contar con un medio que permita determinar con precision la capacidad remanente de la bateria para entregar carga. Este es uno de los aspectos de mayor interes en los centros de investigacion alrededor el mundo. Por tal razon, en este trabajo se propuso

  5. Distrofia muscular de Duchenne y defecto de oxidación de ácidos grasos en un paciente pediátrico

    Alejandra Acosta-Gualandri

    2014-09-01

    Full Text Available Paciente pediátrico, con el diagnóstico de distrofia muscular de Duchenne y deficiencia de acil-CoA deshidrogenasa de cadenas medias, ambas patologías confirmadas por medio de análisis molecular, al detectarse la deleción de los exones 45 al 50 en el gen DMD, y la mutación A985G en estado homocigoto del gen ACADM. El paciente presenta una enfermedad metabólica debido a un trastorno en la oxidación mitocondrial de los ácidos grasos, con una clínica caracterizada por hipoglicemias no cetósicas, cuya herencia es autosómica recesiva, así como una condición neurodegenerativa, que obedece a un defecto en la síntesis de la proteína de la distrofina, con una herencia ligada al X de forma recesiva. Ambas enfermedades genéticas son poco frecuentes, con patrones de herencia mendeliana diversos, presentes en un mismo individuo.

  6. Contenidos de isómeros trans de los ácidos grasos en productos cárnicos. (I Embutidos

    Hernández, N.

    1991-04-01

    Full Text Available We have studied the trans isomers contents of the fatty acids fraction in several types of Spanish sausages, after a previous fat extraction and gas chromatography determination using CP Sil 88 coated capillary columns. The results obtained show a great variability: from 0,14 to 1,63% for C18:1 t and from 0,37 to 2,14% for the total trans fatty acids content.

    En este trabajo se determinan los contenidos de isómeros trans de la fracción de los ácidos grasos, en muestras de embutidos diversos (total 48 muestras, mediante extracción previa de la fracción grasa y posterior análisis por cromatografía de gases capilar, con columna CP Sil 88. Los resultados muestran una gran variabilidad, entre 0,14 y 1,63% de C18:1 t y entre 0,37 y 2,14% de formas trans totales.

  7. Was ordinary matter synthesised from mirror matter? An attempt to explain why $\\Omega_{Baryon} \\approx 0.2\\Omega_{Dark}$

    Foot, R.; Volkas, R. R.

    2003-01-01

    The cosmological dust has begun to settle. A likely picture is a universe comprised (predominantly) of three components: ordinary baryons ($\\Omega_B \\approx 0.05$), non-baryonic dark matter ($\\Omega_{Dark} \\approx 0.22$) and dark energy ($\\Omega_{\\Lambda} \\approx 0.7$). We suggest that the observed similarity of the abundances of ordinary baryons and non-baryonic dark matter ($\\Omega_{B}/\\Omega_{Dark} \\approx 0.20$) hints at an underlying similarity between the fundamental properties of ordin...

  8. Manganese Abundances in the Globular Cluster Omega Centauri

    Cunha, Katia; Bergemann, Maria; Suntzeff, Nicholas B; Lambert, David L

    2010-01-01

    We present manganese abundances in 10 red-giant members of the globular cluster Omega Centauri; 8 stars are from the most metal-poor population (RGB MP and RGB MInt1) while two targets are members of the more metal rich groups (RGB MInt2 and MInt3). This is the first time Mn abundances have been studied in this peculiar stellar system. The LTE values of [Mn/Fe] in Omega Cen overlap those of Milky Way stars in the metal poor Omega Cen populations ([Fe/H] ~ -1.5 to -1.8), however unlike what is observed in Milky Way halo and disk stars, [Mn/Fe] declines in the two more metal-rich RGB MInt2 and MInt3 targets. Non-LTE calculations were carried out in order to derive corrections to the LTE Mn abundances. The non-LTE results for Omega Cen in comparison with the non-LTE [Mn/Fe] versus [Fe/H] trend obtained for the Milky Way confirm and strengthen the conclusion that the manganese behavior in Omega Cen is distinct. These results suggest that low-metallicity supernovae (with metallicities < -2) of either Type II or...

  9. Omega-3 fatty acid and nutrient deficits in adverse neurodevelopment and childhood behaviors.

    Gow, Rachel V; Hibbeln, Joseph R

    2014-07-01

    Nutritional insufficiencies of omega-3 highly unsaturated fatty acids (HUFAs) may have adverse effects on brain development and neurodevelopmental outcomes. A recent meta-analysis reported a small to modest effect size for the efficacy of omega-3 in youth. Several controlled trials of omega-3 HUFAs combined with micronutrients show sizable reductions in aggressive, antisocial, and violent behavior in youth and young adult prisoners. Studies of HUFAs in youth, however, remain lacking. As the evidence base for omega-3 HUFAs as potential psychiatric treatment develops, dietary adjustments to increase omega-3 and reduce omega-6 HUFA consumption are sensible recommendations based on general health considerations. PMID:24975625

  10. Proposal to neutralize acid fluids from wells in the Los Humeros, Pue., geothermal field; Propuesta para la neutralizacion de fluidos acidos provenientes de pozos del campo geotermico de Los Humeros, Pue.

    Flores Armenta, Magaly del Carmen; Ramirez Montes, Miguel; Garcia Cuevas, Juan Manuel [Comision Federal de Electricidad, Gerencia de Proyectos Geotermoelectricos, Morelia, Michoacan (Mexico)]. E-mail: magaly.flores@cfe.gob.mx

    2009-07-15

    Neutralizing an acidic fluid consists of adding a sodium hydroxide solution to neutralize the H group of acids, therefore increasing the pH. The injection of sodium hydroxide has to be continuous and at a proper depth inside the well to protect against the corrosion of casing and surface equipment. Neutralization is a common practice used in geothermal fields, such as at The Geysers in the US and Miravalles in Costa Rica-places where aggressive fluids cause problems for extracting and using geothermal fluids commercially. A zone surrounding wells H-4, H-16 and H-29 in the northern section of the Los Humeros, Pue., geothermal field, known as the Colapso Central, has shown evidence of aggressively acidic fluids. Several wells drilled in the area had to be repaired, thus plugging and isolating the deepest production zones. Well H-43 was drilled two years ago in the northern zone of the field, and even though it is not located in the aggressive-fluid zone, the well presents mineralogical features possibly indicating the presence of acidic fluids. Therefore, before producing this well it has been proposed we install a neutralization system with general characteristics presented in this paper. The system will prevent corrosion that up to now has prevented exploitation of the deep portion of Colapso Central, helping to develop the field in a more profitable way. [Spanish] Neutralizar un fluido acido consiste en agregarle una solucion de hidroxido de sodio. Esto neutraliza el grupo de acidos H y en consecuencia aumenta el pH. La inyeccion de hidroxido de sodio se realiza de manera continua y a una profundidad adecuada dentro del pozo para proteger a la tuberia y a todo el equipo superficial contra la corrosion. La neutralizacion es una practica comun que se viene realizando en campos como Los Geysers en Estados Unidos y en Miravalles, Costa Rica, donde la presencia de fluidos agresivos causa problemas en la extraccion y aprovechamiento del fluido geotermico con fines

  11. Characterizations of \\omega-Limit Sets of Topologically Hyperbolic Systems

    Barwell, Andrew; Oprocha, Piotr; Raines, Brian

    2011-01-01

    It is well known that \\omega-limit sets are internally chain transitive and have weak incompressibility; the converse is not generally true, in either case. However, it has been shown that a set is weakly incompressible if and only if it is an abstract \\omega-limit set, and separately that in shifts of finite type, a set is internally chain transitive if and only if it is a (regular) \\omega-limit set. In this paper we generalise these and other results, proving that the characterization for shifts of finite type holds in a variety of topologically hyperbolic systems (defined in terms of expansive and shadowing properties), and also show that the notions of internal chain transitivity and weak incompressibility coincide in compact metric spaces.

  12. The Fifth Omega Laser Facility Users Group Workshop

    Petrasso, R. D.

    2015-10-01

    A capacity gathering of over 100 researchers from 25 universities and laboratories met at the Laboratory for Laser Energetics (LLE) for the Fifth Omega Laser Facility Users Group (OLUG) workshop. The purpose of the 2.5-day workshop was to facilitate communications and exchanges among individual Omega users and between users and the LLE management; to present ongoing and proposed research; to encourage research opportunities and collaborations that could be undertaken at the Omega Laser Facility and in a complementary fashion at other facilities [such as the National Ignition Facility (NIF) or the Laboratoire pour l’Utilisation des Lasers Intenses (LULI)]; to provide an opportunity for students, postdoctoral fellows, and young researchers to present their research in an informal setting; and to provide feedback to LLE management from the users about ways to improve the facility and future experimental campaigns.

  13. The Sixth Omega Laser Facility Users Group Workshop

    Petrasso, R. D.

    2014-10-01

    A capacity gathering of over 100 researchers from 25 universities and laboratories met at the Laboratory for Laser Energetics (LLE) for the Sixth Omega Laser Facility Users Group (OLUG) workshop. The purpose of the 2.5-day workshop was to facilitate communications and exchanges among individual OMEGA users, and between users and the LLE management; to present ongoing and proposed research; to encourage research opportunities and collaborations that could be undertaken at the Omega Laser Facility and in a complementary fashion at other facilities [such as the National Ignition Facility (NIF) or the Laboratoire pour l’Utilisation des Lasers Intenses (LULI)]; to provide an opportunity for students, postdoctoral fellows, and young researchers to present their research in an informal setting; and to provide feedback from the users to LLE management about ways to improve and keep the facility and future experimental campaigns at the cutting edge.

  14. Pathophysiological role of omega pore current in channelopathies

    Karin eJurkat-Rott

    2012-06-01

    Full Text Available In voltage-gated cation channels, a recurrent pattern for mutations is the neutralization of positively charged residues in the voltage-sensing S4 transmembrane segments. These mutations cause dominant ion channelopathies affecting many tissues such as brain, heart, and skeletal muscle. Recent studies suggest that the pathogenesis of associated phenotypes is not limited to alterations in the gating of the ion-conducting alpha pore. Instead, aberrant so-called omega currents facilitated by the movement of the S4 segments during activation and during recovery are thought to cause symptoms. Surprisingly, these omega currents display uni- or bi-directionality and conduct cations with varying ion selectivity. Additionally, the voltage-sensitivity enables the channels to conduct different omega currents in the various voltage ranges. This review gives an overview of voltage sensor channelopathies in general and focuses on pathogenesis of skeletal muscle S4 disorders for which current knowledge is most advanced.

  15. Multiwavelength Constraints on the Dynamical History of Omega Centauri

    Haggard, Daryl; Cool, A. M.; Arias, T.; Brochmann, M. B.; Dorfman, J.; Gafford, A.; White, V.; Anderson, J.; Davies, M. B.

    2012-09-01

    Omega Centauri, the Milky Way's most massive and enigmatic old stellar cluster, offers a treasure trove of astronomical discovery and controversy. Is the cluster a globular or a dwarf galaxy remnant? Does it host a massive central black hole? What are the origins and dynamical histories of the cluster's multiple stellar populations? I will discuss our multiwavelength imaging and spectroscopic campaigns, and in particular a new Chandra X-ray flux limit on the cluster's purported IMBH. These observations also probe Omega Cen's binary populations and shed light on the cluster's dynamical history.

  16. Collider limits on new physics within micrOMEGAs

    Barducci, D; Bernon, J; Boudjema, F; Da Silva, J; Kraml, S; Laa, U; Pukhov, A

    2016-01-01

    Results from the LHC put severe constraints on models of new physics. This includes constraints on the Higgs sector from the precise measurement of the mass and couplings of the 125~GeV Higgs boson, as well as limits from searches for other new particles. We present the procedure to use these constraints in micrOMEGAs by interfacing it to the external codes Lilith, HiggsSignals, HiggsBounds and SModelS. A few dedicated modules are also provided. With these new features, micrOMEGAs_4.3 provides a generic framework for evaluating dark matter observables together with collider and non-collider constraints.

  17. Metal rich stars in omega Cen: preliminary FLAMES GTO results

    Pancino, E

    2004-01-01

    I present preliminary results for a sample of ~700 red giants in omega Cen, observed during the Ital-FLAMES Consortium GTO time in May 2003, for the Bologna Project on omega Cen. Preliminary Fe and Ca abundances confirm previous results: while the metal-poor and intermediate populations show a normal halo alpha-enhancement of [alpha/Fe]=$+0.3, the most metal-rich stars show a significantly lower [alpha/Fe]=+0.1. If the metal-rich stars have evolved within the cluster in a process of self-enrichment, the only way to lower their alpha-enhancement would be SNe type Ia intervention.

  18. Diseño de instalación eléctrica para acometida e instalación interior de una Planta de Valorización y Reciclaje de Baterías de Plomo-Acido con apoyo de instalación solar fotovoltaica conectada a red

    Céspedes Lasheras, José Juan

    2015-01-01

    El presente proyecto pretende describir y justificar las instalaciones eléctricas tanto de baja como de alta tensión, de una planta industrial dedicada a la Valorización y Reciclaje de Baterías de Plomo-Acido. Igualmente se describirá y justificará la instalación solar fotovoltaica conectada a red, instalada sobre parte de las cubiertas de los edificios que conforman la planta.

  19. Bases moleculares de la activacion plaquetaria en el perro

    Fragio Arnold, Cristina

    1991-01-01

    Se ha estudiado la participacion del metabolismo de polifosfoinositidos y de los segundos mensajeros derivados de este ultimo en la secrecion de serotonina inducida por agonistas fisiologicos y afisiologicos en plaquetas caninas. Asimismo, se ha abordado el estudio de las vias de liberacion de acido araquidonico, asi como la implicacion de este acido graso y de sus metabolitos en la secrecion plaquetaria. Tambie se ha investigado la existencia de proteinas-G-reguladoras en plaquetas caninas y...

  20. An omega-Power of a Finitary Language Which is a Borel Set of Infinite Rank

    Finkel, Olivier

    2008-01-01

    Omega-powers of finitary languages are omega languages in the form V^omega, where V is a finitary language over a finite alphabet X. Since the set of infinite words over X can be equipped with the usual Cantor topology, the question of the topological complexity of omega-powers naturally arises and has been raised by Niwinski, by Simonnet, and by Staiger. It has been recently proved that for each integer n > 0, there exist some omega-powers of context free languages which are Pi^0_n-complete Borel sets, and that there exists a context free language L such that L^omega is analytic but not Borel. But the question was still open whether there exists a finitary language V such that V^omega is a Borel set of infinite rank. We answer this question in this paper, giving an example of a finitary language whose omega-power is Borel of infinite rank.

  1. Contenidos de isómeros trans de los ácidos grasos en productos cárnicos. (III Tejido adiposo y grasa intramuscular de vacuno

    Lluch, M. C.

    1993-06-01

    Full Text Available We give the results obtained for the determination of trans fatty acids in subcutaneous and intramuscular fats from different veal carcasses, using gas chromatography. FA composition differs clearly between both tissues, showing mean values of 58.7% SFA, 39.1% MUFA and 2.7% PUFA in the adipose tissue, and of 44.7% SFA, 46.1% MUFA and 9.4% PUFA in the muscle. Trans fatty acid values obtained in muscle and adipose tissue show statistically significant differences (mean values of 7% total trans fatty acids in intramuscular fat and 10.5% in adipose tissue fat. Besides, we observed a clearly different distribution for C 16: 1t, that didn't show these differences, while C 18: 1t showed a similar distribution than total trans fatty acids. Related to the factors that could determine the trans fatty acid contents in veal carcasses, we found that the race showed more differences between groups than the origin of the animal and their commercial category. On the other hand, correlations we found between trans fatty acids and the total of saturated, mono and polyunsaturated fatty acids showed an opposite sign according to the type of tissue (muscular or adipose. Thus, an increase in the trans fatty acid content was associated with a parallel increase of saturated and decrease in polyunsaturated fatty acid contents in the intramuscular fat. On the contrary, an increase of trans fatty acid content in adipose fat was correlated to a decrease of saturated and an increase of mono and polyunsaturated fatty acid contents.

    Se presentan los resultados obtenidos para la determinación de ácidos grasos en una serie de muestras de tejidos subcutáneo y muscular, procedentes de canales de vacuno, por aplicación de la cromatografía en fase gaseosa, para los que se obtuvieron unos valores medios de 58.7% de ácidos saturados, 39.1 % de monoinsaturados y 2.7% de polinsaturados, en el tejido adiposo, y de 44.7% de saturados, 46.1% de monoinsaturados y 9.4% de

  2. Analytical electron microscope study of the omega phase transformation in a zirconium-niobium alloy

    Zaluzec, N. J.

    1979-01-01

    The study of the as-quenched omega phase morphology shows that the domain size of Zr-15% Nb is on the order of 30 A. No alignment of omega domains along <222>..beta.. directions was observed and samples having undergone thermal cycling in thin foil form, did not develop a long-period structure of alternating ..beta.. and ..omega.. phases below the omega transformation temperature. (FS)

  3. Omega-3 Fatty Acids Moderate Effects of Physical Activity on Cognitive Function

    Leckie, Regina L.; Manuck, Stephen B.; Bhattacharee, Neha; Muldoon, Matthew F.; Flory, Janine M.; Erickson, Kirk I.

    2014-01-01

    Greater amounts of physical activity (PA) and omega-3 fatty acids have both been independently associated with better cognitive performance. Because of the overlapping biological effects of omega-3 fatty acids and PA, fatty acid intake may modify the effects of PA on neurocognitive function. The present study tested this hypothesis by examining whether the ratio of serum omega-6 to omega-3 fatty acid levels would moderate the association between PA and executive and memory functions in 344 pa...

  4. Conventional methods fail to measure cp(omega) of glass-forming liquids

    Christensen, Tage Emil; Olsen, Niels Boye; Dyre, Jeppe

    2007-01-01

    thermal-wave method does not measure the isobaric frequency-dependent specific heat cp(omega). This method rather measures a "longitudinal" frequency-dependent specific heat, a quantity defined and detailed here that is in between cp(omega) and cV(omega). This result means that no reliable wide......-frequency measurements of cp(omega) on liquids approaching the calorimetric glass transition exist. We briefly discuss consequences for experiment....

  5. A Study of Production and Decay of Omega_c^0 Baryons in BABAR

    Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; /Annecy, LAPP; Grauges, E.; /Barcelona, IFAE; Palano, A.; Pappagallo, M.; Pompili, A.; /Bari U. /INFN, Bari; Chen, J.C.; Qi, N.D.; Rong, G.; Wang, P.; Zhu, Y.S.; /Beijing, Inst. High Energy Phys.; Eigen, G.; Ofte, I.; Stugu, B.

    2005-09-28

    Production and decay of {Omega}{sub c}{sup 0} baryons is studied with {approx} 230 fb{sup -1} of data recorded with the BABAR detector at the PEP-II e{sup +}e{sup -} asymmetric-energy storage ring at SLAC. The {Omega}{sub c}{sup 0} is reconstructed through its decays into {Omega}{sup -}{pi}{sup +}, {Omega}{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup +}, {Xi}{sup -}K{sup -}{pi}{sup +}{pi}{sup +} final states. The invariant mass spectra are presented and the signal yields are extracted. Ratios of branching fractions are measured relative to the {Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup +} mode {Beta}({Omega}{sub c}{sup 0} {yields} {Xi}{sup -} K{sup -}{pi}{sup +}{pi}{sup +})/{Beta}({Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup +}) = 0.31 {+-} 0.15(stat.) {+-} 0.04(syst.), {Beta}({Omega}{sub c}{sup 0} {yields} {Omega}{sup -} {pi}{sup +}{pi}{sup -}{pi}{sup +})/{Beta}({Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup +}) < 0.30 (90%CL). The momentum spectrum (not corrected for efficiency) of {Omega}{sub c}{sup 0} baryons is extracted from decays into {Omega}{sup -}{pi}{sup +}, establishing the first observation of {Omega}{sub c}{sup 0} production from B decays.

  6. Relation Between Red Blood Cell Omega-3 Fatty Acid Index and Bleeding During Acute Myocardial Infarction

    Salisbury, Adam C.; Harris, William S.; Amin, Amit P.; Reid, Kimberly J.; O’Keefe, James H; Spertus, John A.

    2011-01-01

    Omega-3 fatty acids have multiple cardiovascular benefits, but may also inhibit platelet aggregation and increase bleeding risk. If this platelet inhibition is clinically meaningful, patients with the highest omega-3 indices (red blood cell eicosapentaenoic [EPA] plus docosahexaenoic acid [DHA]), which reflect long-term omega-3 fatty acid intake, should be at the greatest bleeding risk. We studied 1,523 patients from 24 US centers who had their omega-3 index assessed at the time of AMI. The r...

  7. Estudio del contenido graso, del índice de yodo y del índice y grado de acidez en los turrones de Alicante y Jijona

    Blázquez-Aballan, G.

    1999-04-01

    Full Text Available In this paper, a study of the fat content, and the index and degree of acidity and iodine index has been carried out in twenty four samples belonging to Alicante nougat and Jijona nougat in the Supreme and Extra qualities, which are regulated by the Spanish Regulations for Nougat and Marzipan (Reglamentación Técnico- Sanitaria para Turrones y Mazapanes. Results indicate that these nougats present high and very similar fat contents in both. The iodine indexes are higher and more disperse in the Supreme and Extra qualities of Jijona nougat. The values of acidity index, obtained indicate the good quality of the fat used in these two types of nougat.

    En el presente trabajo se ha realizado un estudio del contenido graso y de los índices de yodo e índice y grado de acidez en un total de veinticuatro muestras de turrón de Alicante y Jijona de las calidades Suprema y Extra tipificadas en la Reglamentación Técnico-Sanitaria para Turrones y Mazapanes. Se ha comprobado que los dos turrones presentan contenidos de grasa elevados y muy similares en ambos. Los índices de yodo se muestran altos y más dispares en las dos calidades del turrón de Jijona, Suprema y Extra. Los valores del índice de acidez que se han obtenido han sido bajos, lo que indica la buena calidad de la grasa de estos dos tipos de turrón.

  8. Instituto de productos lácteos y derivados grasos del P.J.C. Arganda – España

    Ruiz Duerto, A.

    1973-09-01

    Full Text Available This article describes. a The CLUB-DINING-ROOM, made up of: premises for different uses, kitchen, air conditioning installation, semi-basement, stores, covered porch and covered tennis court, which can be reached from outside. Metal structure, ceramic forging and enclosures of silicocalcareous brick. b The LABORATORY BUILDING for the Institute of Dairy Products and By-Products comprises: semibasements, for plant, workshop, changing rooms, stores and other services; first floor: for direction, management, hali, board room, library and laboratory; two floors of laboratories. The structure is metal in girders and pillars, forming a three-dimensional main network —vertically and horizontally— allowing thé passage of any duct. The upright projections which undergo solar action are protected by vertical and horizontal sunbreakers which give the building a most unusual appearance.Se describen en este artículo: a El CLUB-COMEDOR, compuesto de: local para distintos usos, cocina, instalación de acondicionami¿nto de aire, semisótano, almacén, porche cubierto y campo de tenis en la cubierta, con acceso exterior. Estructura metálica, forjados cerámicos y cerramientos de ladrillo silicocalcáreo. b El EDIFICIO DE LABORATORIOS para el Instituto de Productos Lácteos y Derivados Grasos, consta de semisótano: para instalaciones, taller, vestuarios, almacén y otros servicios; planta primera: de dirección, administración, aula, juntas, biblioteca y laboratorio; dos plantas de laboratorios. La estructura es metálica en vigas y pilares, constituyendo una red principal tridimensional —en vei-tical y en horizontal— que permite el paso de cualquier conducto. Los alzados que sufren la acción solar están protegidos por córtaseles verticales y horizontales que prestan una fisonomía singular al edificio.

  9. La adiposidad como factor de riesgo del hígado graso no alcohólico: revisión sistemática

    Arturo Jiménez-Cruz

    2014-04-01

    Full Text Available Introducción: Se ha descrito que la adiposidad es un factor de riesgo del hígado graso no alcohólico (HGNA. Objetivo: Realizar una revisión sistemática de estudios prospectivos que evaluaran la asociación de indicadores de adiposidad con el desarrollo del HGNA. Metodología: Se revisaron todos los artículos originales encontrados en inglés y en español publicados de enero de 2005 a diciembre de 2013, en la base de datos de MEDLINE/PubMed, de estudios prospectivos con una duración igual o mayor a un año de seguimiento. La calidad de los artículos fue evaluada mediante los criterios de GRADE. Resultados: La población total estudiada fue de 10.640 (6.394 hombres y 4.246 mujeres, y el rango de edad fue de 20-88 años. Cumplieron con los criterios de inclusión cinco estudios prospectivos, y el seguimiento osciló entre uno y siete años. Los criterios de diagnóstico utilizados fueron la ultrasonografía (4 y la tomografía computarizada (1. Los OR de IMC, circunferencia de cintura y ganancia de peso oscilaron entre 1,19 a 1,43, 1,04 a 2,15 y 1,21 a 1,57 respectivamente. Conclusión: Se observó una relación consistente entre los indicadores de adiposidad y el HGNA.

  10. Factores que influyen en el contenido de escualeno, fitoesteroles totales y esterificados en el subproducto ácidos grasos destilados de soya para su potencial aprovechamiento

    José Rodríguez Rodríguez

    2015-01-01

    Full Text Available Una necesidad actual de la industria de extracción y refinación de aceite vegetal es la reducción y/o explotación de sus subproductos. Uno de estos, conocido como Ácidos Grasos Destilados de Aceite de Soya (AGDAS, resulta potencialmente valioso para las industrias alimentaria, farmacéutica y cosmética por la presencia de compuestos con actividad biológica favorable, como los fitoesteroles y el escualeno, los primeros como agentes hipocolesterolemiantes y el escualeno como emoliente y humectante. En este trabajo, mediante cromatografía de gases se determinó el contenido de escualeno y fitoesteroles libres y esterificados para evaluar la viabilidad de aprovechamiento de AGDAS como fuente de dichos compuestos y establecer si la procedencia del grano de soya (americano o nacional, la condición de cultivo (Sequía o Normal, años 2011 y 2012 respectivamente y el grado de calidad del aceite (Genérico o Premium son factores determinantes en el contenido de dichos compuestos en el subproducto. En conclusión AGDAS representa una fuente viable de fitoesteroles totales con 14.92% p/p, no así de escualeno con 1.75% p/p. La concentración de escualeno está influenciada por la procedencia del grano y la condición de cultivo, mientras que la de fitoesteroles esterificados por el grado de calidad y condición de cultivo. Ninguno de los factores influyó en el contenido de fitoesteroles totales. Esto permite establecer que la composición del subproducto AGDAS no es constante y se justifican protocolos como el de este estudio para su caracterización con fines de aprovechamiento.

  11. Adición de aceites vegetales a la dieta de cabras lecheras: efecto sobre el contenido de ácidos grasos de la grasa láctea

    AL Martínez Marín

    2013-01-01

    Full Text Available El objetivo del presente trabajo fue investigar el efecto de la adición de aceites vegetales de diferente grado de insaturación a la dieta de cabras lecheras sobre el perfil de ácidos grasos de la grasa láctea. Doce cabras de raza Malagueña fueron asignadas al azar a uno de cuatro tratamientos: dieta basal sin aceite añadido y la misma dieta basal adicionada con 48 g/d de aceite de girasol alto oleico, aceite de girasol normal o aceite de lino. La dieta estuvo compuesta por heno de alfalfa (30% y un concentrado granulado (70% en el que se incluyó el aceite correspondiente. Todos los aceites redujeron el contenido de ácidos grasos saturados de cadena media de la grasa láctea (P 0,05. El aceite de girasol normal incrementó el contenido de los ácidos C18:1t10, vaccénico y ruménico y aumentó el valor de la ratio linoleico/α-linolénico (P 0,05. Los resultados obtenidos permiten concluir que la adición de aceite de lino a la dieta de cabras en lactación, en comparación con la de los aceites de girasol alto oleico y normal, modifica el perfil de ácidos grasos de la grasa láctea en un sentido más favorable desde el punto de vista de la salud humana.

  12. Effect of n-3 polyunsaturated fatty acids on the lipidic profile of healthy Mexican volunteers Efecto de los ácidos grasos polinsaturados n-3 en el perfil lipídico de mexicanos voluntarios

    OCTAVIO CARVAJAL

    1997-05-01

    Full Text Available Objective. The effect of n-3 polyunsaturated fatty acids on the serum lipid profile in a Mexican population was evaluated. Material and methods. Three g of salmon oil was the daily intake during four weeks. Total cholesterol, triglycerides, low density lipoproteins, high density lipoproteins and erythrocyte fatty acid composition were analyzed. Results. The hypertriglyceridemic group showed a statistically significant (pObjetivo. Estudiar el efecto de los ácidos grasos polinsaturados n-3 en el perfil lipídico sérico de una población mexicana. Material y métodos. La ingesta diaria del suplemento de aceite de salmón fue de 3 gramos durante cuatro semanas. Se evaluaron los niveles de colesterol total, triglicéridos, lipoproteínas de baja densidad, lipoproteínas de alta densidad y la composición en ácidos grasos de los eritrocitos. Resultados. Muestran una reducción significativa (p< 0.05 en los niveles de triglicéridos y un aumento significativo (p< 0.01 en los niveles de lipoproteínas de alta densidad en los sujetos con hipertrigliceridemia. El grupo con hipercolesterolemia presentó reducción en los niveles de colesterol total y triglicéridos y aumento significativo en los niveles de lipoproteínas de alta densidad (p< 0.01. Conclusiones. El efecto hipolipidemiante de los ácidos grasos polinsaturados n-3 se puso de manifiesto en voluntarios mexicanos bajo las condiciones aquí evaluadas.

  13. Efecto del riego y la poda en el contenido de componentes menores y ácidos grasos del aceite de oliva virgen varietal Farga

    Monteleone, J. I.

    2013-09-01

    componentes vinculados a la estabilidad oxidativa de los aceites de oliva vírgenes (polifenoles, clorofilas y carotenoides, variedad Farga. Se aplicaron cuatro tratamientos: T100%SP (riego equivalente al 100% de la demanda evapotranspiratoria (Etc del cultivo durante todo el ciclo y sin poda invernal; T50%SP (riego que equivalente al 50% de la Etc desde endurecimiento de carozo hasta cosecha y sin poda; T100%CP (riego 100% y con poda; T50%CP (riego deficitario y con poda. Se monitoreó el estado hídrico de las plantas a través del potencial hídrico del tallo a mediodía (PHT, el contenido de humedad del suelo y la radiación fotosintéticamente activa incidente en el interior de la copa de los olivos. El muestreo de aceitunas se extendió desde pre-envero hasta maduración completa. El aceite se extrajo en laboratorio por molienda de las aceitunas con molino de tornillo, termo-amasado, separación de fases sólida y líquida con una prensa manual y decantación para separar el aceite. Sobre el aceite extraído por métodos mecánicos se determinó: perfil de ácidos grasos, clorofilas y carotenoides (espectrofotometría a 670 nm y 472 nm, polifenoles totales (absorbancia a 725 nm y ácidos grasos por cromatografía gaseosa capilar (CGC. Los datos de rendimiento graso (lipogénesis expuestos muestran que no hay diferencias estadísticas entre un riego deficitario que cubre 50% de la Etc y el tratamiento control, tanto en plantas con poda o sin ella. El contenido de polifenoles, clorofilas y carotenoides en los aceites desciende a medida que avanza el estado de madurez de los frutos, independientemente del contenido inicial y el tratamiento. Los tratamientos con riego deficitario (T50% presentan contenidos más elevados de polifenoles (excepto para el muestreo de pre-envero, clorofilas y de carotenoides. No se observan diferencias estadísticamente significativas entre los tratamientos con y sin poda.

  14. Inhibition of Escherichia coli chemotaxis by omega-conotoxin, a calcium ion channel blocker.

    Tisa, L S; Olivera, B M; Adler, J

    1993-01-01

    Escherichia coli chemotaxis was inhibited by omega-conotoxin, a calcium ion channel blocker. With Tris-EDTA-permeabilized cells, nanomolar levels of omega-conotoxin inhibited chemotaxis without loss of motility. Cells treated with omega-conotoxin swam with a smooth bias, i.e., tumbling was inhibited.

  15. gamma-linolenic acid does not augment long-chain polyunsaturated fatty acid omega-3 status

    Brouwer, DAJ; Hettema, Y; van Doormaal, JJ; Muskiet, FAJ

    1998-01-01

    Augmentation of long chain polyunsaturated omega 3 fatty acid (LCPUFA omega 3) status can be reached by consumption of fish oil or by improvement of the conversion of a-linolenic acid (ALA) to LCPUFA omega 3. Since gamma-linolenic acid (GLA) might activate the rate-limiting Delta-6 desaturation, we

  16. ENSAYO Y FUNCIONALIDAD DE UN SUSTITUYENTE DE SÓLIDOS NO GRASOS LÁCTEOS EN UNA MEZCLA PARA HELADO ESSAY AND FUNCTIONALITY OF A NON FAT MILK SOLIDS SUBSTITUTE IN AN ICE CREAM MIX

    Francy Nataly López Barón; José Uriel Sepúlveda Valencia; Diego Alonso Restrepo Molina

    2010-01-01

    Este estudio tuvo como objeto ensayar y evaluar la influencia de dos formulaciones de sólidos no grasos lácteos (F1 y F2), sobre las características fisicoquímicas de mezclas de helado. Mediante criterios bromatológicos (contenido de proteína) se seleccionó la formulación F1, ya que una prueba sensorial que se aplicó simultáneamente, no aportó diferencias entre ambas formulaciones. Posteriormente se usaron tres niveles de la mezcla escogida, sustituyendo 20% (T2), el 40% (T3) y el 60% (T4), d...

  17. Desarrollo, aplicación y evaluación de un sustituyente de sólidos no grasos lácteos (SNGL) en una mezcla para helado duro

    López Barón, Francy Nataly

    2010-01-01

    El segmento de los helados es un sector muy dinámico de la industria de alimentos. Su consumo percápita ha aumentado hasta 2,3 Kg, lo cual hace interesante el desarrollo de ingredientes alimenticios, para aplicarlos en las mezclas manteniendo la calidad fisicoquímica, nutricional y sensorial, dentro de la legislación pero a un costo más bajo. El objetivo de este estudio ha sido desarrollar, aplicar y evaluar un sustituto de sólidos no grasos, en la elaboración de una mezcla de helado duro. ...

  18. MECANISMOS MOLECULARES POR LOS CUALES LOS ÁCIDOS GRASOS PODRÍAN INFLUIR EN LA CAPTACIÓN DE GLUCOSA Molecular mechanisms by which free fatty acids might interfere with periferic insuline action

    Clara Eugenia Pérez

    2005-04-01

    Full Text Available Esta revisión tiene el propósito de actualizar el probable mecanismo molecular que ejercen los ácidos grasos en las células que captan glucosa, bajo el estimulo de la insulina y su posible implicación en la diabetes mellitus tipo 2 en la que suelen asociarse resistencia a la insulina, obesidad y síndrome metabólico. Entre los mecanismos moleculares por los cuales un aumento de los ácidos grasos libres podría producir resistencia a la insulina, se encuentra la disminución de los niveles de xilulosa 5-fosfato que bloquea la glucólisis por inhibición de la fosfofructocinasa, ello conduce a un aumento de los productos finales en la vía de las hexosaminas y a la activación de la proteincinasa C, un conocido activador de inhibidor de la cinasa Kappa Beta que inhibe la fosforilación del receptor del sustrato de insulina en tirosina, bloqueando los transportadores de glucosa. Existen investigaciones que sugieren que los ácidos grasos libres están implicados en la insulino-resistencia pero el mecanismo bioquímico no esta dilucidado del todo, pues no hay un mecanismo integral que los relacione o interconecte para concluir determinantemente cómo los altos niveles de ácidos grasos libres inducen la resistencia a la insulina.Previous research suggests that free fatty acids are implicated in insulin resistance, but the molecular mechanism for it isn't completely elucidated, given the lack of an integrated hypothesis relating all of the proposed mechanisms. At the present time, the causes of insulin resistance, obesity and metabolic syndrome, a common feature in patients with diabetes mellitus are matter of intense study. Among several molecular mechanisms by which the increase in free fatty acids could raise insulin resistance is decrease in xylulose-5-phosphate that leads to an inhibition of phosphofructokinase-2, and consequently to a blockade in glycol sis with a subsequent increase in the final products of the hexosamine pathway and

  19. OmegaWINGS: OmegaCAM-VST observations of WINGS galaxy clusters

    Gullieuszik, M.; Poggianti, B.; Fasano, G.; Zaggia, S.; Paccagnella, A.; Moretti, A.; Bettoni, D.; D'Onofrio, M.; Couch, W. J.; Vulcani, B.; Fritz, J.; Omizzolo, A.; Baruffolo, A.; Schipani, P.; Capaccioli, M.; Varela, J.

    2015-09-01

    Context. Wide-field observations targeting galaxy clusters at low redshift are complementary to field surveys and provide the local benchmark for detailed studies of the most massive haloes in the local Universe. The Wide-field Nearby Galaxy-cluster Survey (WINGS) is a wide-field multi-wavelength survey of X-ray selected clusters at z = 0.04-0.07. The original 34' × 34' WINGS field of view has now been extended to cover a 1 deg2 field with both photometry and spectroscopy. Aims: We present the Johnson B- and V-band OmegaCAM at the VST observations of 46 WINGS clusters together with the data reduction, data quality, and Sextractor photometric catalogues. Methods: The data reduction was carried out with a modified version of the ESO-MVM (also known as ALAMBIC) reduction package, adding a cross-talk correction, the gain harmonisation, and a control procedure for problematic CCDs. The stray-light component was corrected for by employing our own observations of populated stellar fields. Results: With a median seeing of 1″ in both bands, our 25-min exposures in each band typically reach the 50% completeness level at V = 23.1 mag. The quality of the astrometric and photometric accuracy has been verified by comparison with the 2MASS and SDSS astrometry, and SDSS and previous WINGS imaging. Star-to-galaxy separation and sky-subtraction procedure were tested comparing them with previous WINGS data. Conclusions: The Sextractor photometric catalogues are publicly available at the CDS and will be included in the next release of the WINGS database on the Virtual Observatory together with the OmegaCAM reduced images. These data form the basis for a large ongoing spectroscopic campaign with AAOmega at the AAT and are being employed for a variety of studies. Based on observations made with VST at ESO Paranal Observatory under program ID 88.A-4005, 089.A-0023, 090.A-0074, 091.A-0059, and 093.A-0041.The photometric catalogue is only available at the CDS via anonymous ftp to http

  20. Low-energy photoproduction of omega-mesons

    Barth, J; Glander, K H; Hannappel, J; Jöpen, N; Klein, F; Lawall, R; Menze, D; Neuerburg, W; Ostrick, M; Paul, E; Schulday, I; Schwille, W J; Wiegers, B; Ernst, J; Kalinowsky, H; Klempt, E; Link, J; Pee, H V; Klein, F J; Wieland, F W; Wisskirchen, J; Wu, C

    2003-01-01

    The photoproduction of the vector meson omega has been studied between threshold and W=2.4 GeV with the SAPHIR detector at the Bonn electron stretcher ring ELSA. Besides, the total cross-sections angular distributions in the CMS and decay angular distributions in the helicity and Gottfried-Jackson systems have been measured.

  1. Do we need 'new' omega-3 polyunsaturated fatty acids formulations?

    Cicero, Arrigo F G; Morbini, Martino; Borghi, Claudio

    2015-02-01

    The therapeutic value of omega-3 polyunsaturated fatty acids (PUFAs), mainly (but not only) found in fish oils, eicosapentaenoic and docosahexaenoic acids (EPA and DHA, respectively), has been extensively studied in a wide variety of disease conditions, predominantly in cardiovascular disease. However, the significant difference in efficacy observed in various conditions with different dosages seems to be at least partly related to the large discrepancy in quality of the product and to the bioavailability of the omega-3 PUFA. The research of new sources (e.g., from arctic Krill oil) and pharmaceutical forms of omega-3 PUFA (e.g., omega-3 carboxylic acids) is needed in order to detect the one with the best bioavailability and efficacy, and with a parallel reduction in the production costs. There is also the need to understand if long-term PUFA supplementation could increase the efficacy of the already-available evidence-based therapies for cardiovascular disease prevention and for the management of the diseases where the use of PUFA could have a possible improving effect. PMID:25474717

  2. Magnesium Isotope Ratios in omega Centauri Red Giants

    Da Costa, G S; Yong, David

    2013-01-01

    We have used high resolution observations obtained at the AAT with UHRF (R ~ 100,000) and at Gemini-S with b-HROS (R ~ 150,000) to determine magnesium isotope ratios for seven omega Centauri red giants that cover a range in iron abundance from [Fe/H] = --1.78 to --0.78 dex, and for two red giants in M4 (NGC 6121). The omega Centauri stars sample both the "primordial" (i.e., O-rich, Na and Al-poor) and the "extreme" (O-depleted, Na and Al-rich) populations in the cluster. The primordial population stars in both omega Centauri and M4 show (25Mg, 26Mg)/24 Mg isotopic ratios that are consistent with those found for the primordial population in other globular clusters with similar [Fe/H] values. The isotopic ratios for the omega Centauri extreme stars are also consistent with those for extreme population stars in other clusters. The results for the extreme population stars studied indicate that the 26Mg/24Mg ratio is highest at intermediate metallicities ([Fe/H] < --1.4 dex), and for the highest [Al/Fe] values....

  3. A Ring Imaging Cerenkov detector for the CERN OMEGA spectrometer

    A large acceptance Ring Imaging Cerenkov detector has been constructed for use at the CERN Omega Spectrometer. The design of the detector is discussed, with attention paid to its principal components, and preliminary results are given which show that the detector is capable of identifying pions and protons at 100 GeV/c. (author)

  4. Golden Jubilee photos: The Alpha and the OMEGA

    2004-01-01

    In 1972, the OMEGA spectrometer was commissioned in the West Area and more than a million collisions were recorded that very first year. OMEGA was equipped with spark chambers - replaced at the end of the 1970s by electronic detectors - and a 15 000-tonne superconducting magnet. On this photo we can see the magnet's lower coil and, in the foreground, the support plate for the upper coil. No fewer than 48 experiments made use of this device, exploiting beams of various particles at various energies - from the PS at the beginning, and then from the highest energy beams of the SPS. OMEGA thus played a key role in many physics results and activities, notably the production of the J/psi particle, the study of particles carrying charm or beauty quarks, the study of «gluonia», and the CERN heavy ion programme. The OMEGA experiments ceased in 1996 when the facilities in the West Hall were shut down in preparation for the construction of the LHC.

  5. New natural antioxidants for protecting omega-3 rich products

    Farvin, Sabeena; Jacobsen, Charlotte

    2012-01-01

    The long-chain (LC) highly unsaturated omega-3 fatty acids, EPA (eicosapentaenoic acid, 20:5) and DHA (docosahexaenoic acid, 22:6) are vital for a wide range of biological functions and are implicated in the prevention of numerous diseases. However, these fatty acids are highly susceptible to...

  6. Oxidation of Marine Omega-3 Supplements and Human Health

    Benjamin B. Albert

    2013-01-01

    Full Text Available Marine omega-3 rich oils are used by more than a third of American adults for a wide range of purported benefits including prevention of cardiovascular disease. These oils are highly prone to oxidation to lipid peroxides and other secondary oxidation products. Oxidized oils may have altered biological activity making them ineffective or harmful, though there is also evidence that some beneficial effects of marine oils could be mediated through lipid peroxides. To date, human clinical trials have not reported the oxidative status of the trial oil. This makes it impossible to understand the importance of oxidation to efficacy or harm. However, animal studies show that oxidized lipid products can cause harm. Oxidation of trial oils may be responsible for the conflicting omega-3 trial literature, including the prevention of cardiovascular disease. The oxidative state of an oil can be simply determined by the peroxide value and anisidine value assays. We recommend that all clinical trials investigating omega-3 harms or benefits report the results of these assays; this will enable better understanding of the benefits and harms of omega-3 and the clinical importance of oxidized supplements.

  7. Effect of Omega-3 Fatty Acids Treatment on Insulin Resistance

    Mogoş Tiberius

    2014-12-01

    Full Text Available Background and aims: Insulin resistance (IR is a common pathogenic factor of several diseases: diabetes mellitus, the metabolic syndrome, arterial hypertension, atherosclerosis, dyslipidemia, etc. There are many therapeutic factors involved in decreasing IR. Among them we mention metformin, pioglitazone, physical activity, weight loss, diet, etc. In the last decade, there are more observations of the influence of polyunsaturated fatty acids on IR. The most powerful seem to be omega-3 fatty acids. In our study, we wanted to asses if the administration of omega-3 fatty acids is involved in modifying IR. Materials and methods: We evaluated 126 diabetic patients with IR from January 2011 until July 2014. The study was open-label and non-randomized. For the determination of IR we used the HOMA-IR method. Results: For both males and females there was a regression of HOMA-IR during the 4 weeks of treatment with omega-3 and also after 2 weeks after stopping the administration of these fatty acids. The decrease of HOMA-IR was statistically significant (p<0.05. The statistic result observed in the next 2 weeks after stopping administration of omega-3 was also significant (p<0.05.

  8. The nuclear impact on cosmology the H$_{0}$-$\\Omega$ diagram

    Copi, C J; Copi, Craig J; Schramm, David N

    1995-01-01

    The \\HOmega\\ diagram is resurrected to dramatically illustrate the nature of the key problems in physical cosmology today and the role that nuclear physics plays in many of them. In particular it is noted that the constraints on \\OmegaB\\ from big bang nucleosynthesis do not overlap with the constraints on \\OmegaVis\\ nor have significant overlap with the lower bound on \\Omega from cluster studies. The former implies that the bulk of the baryons are dark and the later is the principle argument for non-baryonic dark matter. A comparison with hot x-ray emitting gas in clusters is also made. The lower bound on the age of the universe from globular cluster ages (hydrogen burning in low mass stars) and from nucleocosmochronology also illustrates the Hubble constant requirement H_0 \\le 66 \\Hunits for \\Omega_0 = 1\\@. It is also noted that high values of H_0 (\\sim 80\\Hunits) even more strongly require the presence of non-baryonic dark matter. The lower limit on H_0 (\\ge 38\\Hunits) from carbon detonation driven type~Ia ...

  9. The least-action method, cold dark matter, and omega

    Dunn, A. M.; Laflamme, R.

    1995-01-01

    Peebles has suggested an interesting technique, called the least-action method, to trace positions of galaxies back in time. This method applied on the Local Group galaxies seems to indicate that we live in an omega approximately = 0.1 universe. We have studied a cold dark matter (CDM) N-body simulation with omega = 0.2 and H = 50 km/s/Mpc and compared trajectories traced back by the least-action method with the ones given by the center of mass of the CDM halos. We show that the agreement between these sets of trajectories is at best qualitative. We also show that the line-of-sight peculiar velocities of halos are underestimated. This discrepancy is due to orphans, i.e., CDM particles which do not end up in halos. We vary the value of omega in the least-action method until the line-of-sight velocities agree with the CDM ones. The best value for this omega underestimates one of the CDM simulations by a factor of 4-5.

  10. Phenolipids as antioxidants in omega-3 enriched food products

    Sørensen, Ann-Dorit Moltke; Aleman, M.; Durand, E.;

    Foods containing omega-3 PUFA are highly susceptible to oxidation. This causes formation of undesirable flavors and loss of health-beneficial fatty acids. To protect these food products, antioxidant addition may be a solution. Lately, extensive work has been performed on phenolipids and their eff...

  11. Effects of excedent commercial feed consumption on fatty acid profile from marine fauna aggregated to fish farms = Efectos del consumo de pienso comercial excedente en el perfil de ácidos grasos de la fauna marina agregada a piscifactorías

    Gonzalez Silvera, Daniel

    2016-01-01

    Objetivos: 1 – Comprobar el posible efecto del consumo de residuos de la acuicultura en diferentes tejidos de distintas especies de peces salvajes agregados a las piscifactorías. 1.1 – El uso de ácidos grasos como marcadores para evaluar el grado de consumo de residuos de la acuicultura por parte de peces salvajes, teniendo en cuenta la distancia a jaulas de piscifactoría. 1.2 – Comprobar el efecto en el perfil de ácidos grasos de peces de distinto nivel trófico. 1.3 – Evaluar la trasmisión p...

  12. Effects of excedent commercial feed consumption on fatty acid profile from marine fauna aggregated to fish farms = Efectos del consumo de pienso comercial excedente en el perfil de ácidos grasos de la fauna marina agregada a piscifactorías

    González Silvera, Daniel

    2016-01-01

    Objetivos: 1 – Comprobar el posible efecto del consumo de residuos de la acuicultura en diferentes tejidos de distintas especies de peces salvajes agregados a las piscifactorías. 1.1 – El uso de ácidos grasos como marcadores para evaluar el grado de consumo de residuos de la acuicultura por parte de peces salvajes, teniendo en cuenta la distancia a jaulas de piscifactoría. 1.2 – Comprobar el efecto en el perfil de ácidos grasos de peces de distinto nivel trófico. 1.3 – Evaluar la ...

  13. OmegaWINGS: OmegaCAM@VST observations of WINGS galaxy clusters

    Gullieuszik, M; Fasano, G; Zaggia, S; Paccagnella, A; Moretti, A; Bettoni, D; D'Onofrio, M; Couch, W J; Vulcani, B; Fritz, J; Omizzolo, A; Baruffolo, A; Schipani, P; Capaccioli, M; Varela, J

    2015-01-01

    The Wide-field Nearby Galaxy-cluster Survey (WINGS) is a wide-field multi-wavelength survey of X-ray selected clusters at z =0.04-0.07. The original 34'x34' WINGS field-of- view has now been extended to cover a 1 sq.deg field with both photometry and spectroscopy. In this paper we present the Johnson B and V-band OmegaCAM/VST observations of 46 WINGS clusters, together with the data reduction, data quality and Sextractor photometric catalogs. With a median seeing of 1arcs in both bands, our 25-minutes exposures in each band typically reach the 50% completeness level at V=23.1 mag. The quality of the astrometric and photometric accuracy has been verified by comparison with the 2MASS as well as with SDSS astrometry, and SDSS and previous WINGS imaging. Star/galaxy separation and sky-subtraction procedure have been tested comparing with previous WINGS data. The Sextractor photometric catalogues are publicly available at the CDS, and will be included in the next release of the WINGS database on the VO together wi...

  14. Study of the near-threshold omega phi mass enhancement in doubly OZI-suppressed J/psi -> gamma omega phi decays

    Ablikim, M.; Achasov, M. N.; Albayrak, O.; Ambrose, D. J.; An, F. F.; An, Q.; Bai, J. Z.; Ban, Y.; Becker, J.; Bennett, J. V.; Bertani, M.; Bian, J. M.; Boger, E.; Bondarenko, O.; Boyko, I.; Briere, R. A.; Bytev, V.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J.C.; Chen, M.L.; Chen, S. J.; Chen, X.; Chen, Y.B.; Cheng, H. P.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J.P.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Ding, W. M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Fang, J.; Fang, S. S.; Fava, L.; Feng, C. Q.; Ferroli, R. B.; Friedel, P.; Fu, C. D.; Gao, Y.; Geng, C.; Goetzen, K.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A.Q.; Guo, L. B.; Guo, T.; Guo, Y. P.; Han, Y. L.; Harris, F. A.; He, K. L.; He, M.; He, Z. Y.; Held, T.; Heng, Y. K.; Hou, Z. L.; Hu, C.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, G. M.; Huang, G. S.; Huang, J.S.; Huang, L.; Huang, X.T.; Huang, Y.; Huang, Y.P.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, L.L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F. F.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Kopf, B.; Kornicer, M.; Kuehn, W.; Lai, W.; Lange, J.S.; Leyhe, M.; Li, C. H.; Li, Cheng; Li, Cui; Li, D. M.; Li, F.; Li, G.; Li, H.B.; Li, J. C.; Li, K.; Li, Lei; Li, Q. J.; Li, S.L.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y.T.; Liao, G.R.; Liao, X. T.; Lin, D.; Liu, B. J.; Liu, Cheng; Liu, C.X.; Liu, F.H.; Liu, Fang; Liu, Feng; Liu, H.; Liu, H. B.; Liu, H. H.; Liu, H. M.; Liu, H. W.; Liu, J. P.; Liu, K.; Liu, K.Y.; Liu, Kai; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lu, G. R.; Lu, H. J.; Lu, J.G.; Lu, Q. W.; Lu, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X.L.; Lv, M.; Ma, C.L.; Ma, F. C.; Ma, H. L.; Ma, Q. M.; Ma, S.; Ma, T.; Ma, X. Y.; Maas, F.E.; Maggiora, M.; Malik, Q. A.; Mao, Y. J.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Morales, C. Morales; Muchnoi, N. Yu.; Muramatsu, H.; Nefedov, Y.; Nicholson, C.; Nikolaev, I. B.; Ning, Z.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Park, J.W.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Prencipe, E.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, L. Q.; Qin, X. S.; Qin, Y.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schaefer, B. D.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, X. Y.; Spataro, S.; Spruck, B.; Sun, D. H.; Sun, G. X.; Sun, J.F.; Sun, S. S.; Sun, Y.J.; Sun, Y.Z.; Sun, Z.J.; Sun, Z.T.; Tang, C.J.; Tang, X.; Tapan, I.; Thorndike, E. H.; Toth, D.; Ullrich, M.; Varner, G. S.; Wang, B.Q.; Wang, D.; Wang, D.Y.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q. J.; Wang, S. G.; Wang, X. F.; Wang, X. L.; Wang, Y. F.; Wang, Z.; Wang, Z. G.; Wang, Z.Y.; Wei, D. H.; Wei, J.B.; Weidenkaff, P.; Wen, Q. G.; Wen, S. P.; Wiedner, U.; Wu, L.H.; Wu, N.; Wu, S.X.; Wu, W.; Wu, Z.; Xia, L. G.; Xiao, Z. J.; Xie, Y. G.; Xiu, Q. L.; Xu, G. F.; Xu, G. M.; Xu, Q.J.; Xu, Q.N.; Xu, X. P.; Xu, Z. R.; Xue, F.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, Y. H.; Yang, H. X.; Yang, Y.; Yang, Y. X.; Ye, H.; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, H. W.; Yu, J. S.; Yu, S. P.; Yuan, C. Z.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, R.; Zhang, S. H.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhang, Zhenghao; Zhao, G.; Zhao, H. S.; Zhao, J.W.; Zhao, K. X.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, Q. Z.; Zhao, S.J.; Zhao, T.C.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, Y. H.; Zhong, B.; Zhong, Z.; Zhou, L.; Zhou, X. K.; Zhou, X.R.; Zhu, C.; Zhu, K.; Zhu, K. J.; Zhu, S.H.; Zhu, Stuart; Zhu, Y.C.; Zhu, Y.M.; Zhu, Y.S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.; Werner, M.J.; Zheng, J.P.

    2013-01-01

    A 2:25 x 10(8) J/psi event sample accumulated with the BESIII detector is used to study the doubly Okubo-Zweig-Iizuka-suppressed decay modes J/psi -> gamma omega phi, omega -> pi(+)pi(-)pi(0), phi -> K+K-. A strong deviation (> 30 sigma) from three-body J/psi -> gamma omega phi phase space is observ

  15. Omega-3/Omega-6 Fatty Acids for Attention Deficit Hyperactivity Disorder: A Randomized Placebo-Controlled Trial in Children and Adolescents

    Johnson, Mats; Ostlund, Sven; Fransson, Gunnar; Kadesjo, Bjorn; Gillberg, Christopher

    2009-01-01

    Objective: The aim of the study was to assess omega 3/6 fatty acids (eye q) in attention deficit hyperactivity disorder (ADHD). Method: The study included a randomized, 3-month, omega 3/6 placebo-controlled, one-way crossover trial with 75 children and adolescents (8-18 years), followed by 3 months with omega 3/6 for all. Investigator-rated ADHD…

  16. Measurement of the mass and lifetime of the $\\Omega_b^-$ baryon

    Aaij, Roel; Adeva, Bernardo; Adinolfi, Marco; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio Augusto; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Andreassi, Guido; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; d'Argent, Philippe; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Bachmann, Sebastian; Back, John; Badalov, Alexey; Baesso, Clarissa; Baker, Sophie; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Battista, Vincenzo; Bay, Aurelio; Beaucourt, Leo; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Bel, Lennaert; Bellee, Violaine; Belloli, Nicoletta; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bertolin, Alessandro; Betti, Federico; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bifani, Simone; Billoir, Pierre; Bird, Thomas; Birnkraut, Alex; Bizzeti, Andrea; Blake, Thomas; Blanc, Frédéric; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borgheresi, Alessio; Borghi, Silvia; Borisyak, Maxim; Borsato, Martino; Boubdir, Meriem; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Braun, Svende; Britsch, Markward; Britton, Thomas; Brodzicka, Jolanta; Buchanan, Emma; Burr, Christopher; Bursche, Albert; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Campana, Pierluigi; Campora Perez, Daniel; Capriotti, Lorenzo; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carniti, Paolo; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cavallero, Giovanni; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Chatzikonstantinidis, Georgios; Chefdeville, Maximilien; Chen, Shanzhen; Cheung, Shu-Faye; Chobanova, Veronika; Chrzaszcz, Marcin; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Cogoni, Violetta; Cojocariu, Lucian; Collazuol, Gianmaria; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Crocombe, Andrew; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dall'Occo, Elena; Dalseno, Jeremy; David, Pieter; Davis, Adam; De Aguiar Francisco, Oscar; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Simone, Patrizia; Dean, Cameron Thomas; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Déléage, Nicolas; Demmer, Moritz; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Dey, Biplab; Di Canto, Angelo; Dijkstra, Hans; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dovbnya, Anatoliy; Dreimanis, Karlis; Dufour, Laurent; Dujany, Giulio; Dungs, Kevin; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; El Rifai, Ibrahim; Elsasser, Christian; Ely, Scott; Esen, Sevda; Evans, Hannah Mary; Evans, Timothy; Falabella, Antonio; Färber, Christian; Farley, Nathanael; Farry, Stephen; Fay, Robert; Fazzini, Davide; Ferguson, Dianne; Fernandez Albor, Victor; Ferrari, Fabio; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fleuret, Frederic; Fohl, Klaus; Fontana, Marianna; Fontanelli, Flavio; Forshaw, Dean Charles; Forty, Roger; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; Gandini, Paolo; Gao, Yuanning; García Pardiñas, Julián; Garra Tico, Jordi; Garrido, Lluis; Garsed, Philip John; Gascon, David; Gaspar, Clara; Gavardi, Laura; Gazzoni, Giulio; Gerick, David; Gersabeck, Evelina; Gersabeck, Marco; Gershon, Timothy; Ghez, Philippe; Gianì, Sebastiana; Gibson, Valerie; Girard, Olivier Göran; Giubega, Lavinia-Helena; Gligorov, Vladimir; Göbel, Carla; Golubkov, Dmitry; Golutvin, Andrey; Gomes, Alvaro; Gotti, Claudio; Grabalosa Gándara, Marc

    2016-01-01

    A proton-proton collision data sample, corresponding to an integrated luminosity of 3 fb$^{-1}$ collected by LHCb at $\\sqrt{s}=7$ and 8 TeV, is used to reconstruct $63\\pm9$ $\\Omega_b^-\\to\\Omega_c^0\\pi^-$, $\\Omega_c^0\\to pK^-K^-\\pi^+$ decays. Using the $\\Xi_b^-\\to\\Xi_c^0\\pi^-$, $\\Xi_c^0\\to pK^-K^-\\pi^+$ decay mode for calibration, the lifetime ratio and absolute lifetime of the $\\Omega_b^-$ baryon are measured to be \\begin{align*} \\frac{\\tau_{\\Omega_b^-}}{\\tau_{\\Xi_b^-}} &= 1.11\\pm0.16\\pm0.03, \\\\ \\tau_{\\Omega_b^-} &= 1.78\\pm0.26\\pm0.04\\pm0.05~{\\rm ps}, \\end{align*} where the uncertainties are statistical, systematic and from the calibration mode (for $\\tau_{\\Omega_b^-}$ only). A measurement is also made of the mass difference, $m_{\\Omega_b^-}-m_{\\Xi_b^-}$, and the corresponding $\\Omega_b^-$ mass, which yields \\begin{align*} m_{\\Omega_b^-}-m_{\\Xi_b^-} &= 247.4\\pm3.2\\pm0.5~{\\rm MeV}/c^2, \\\\ m_{\\Omega_b^-} &= 6045.1\\pm3.2\\pm 0.5\\pm0.6~{\\rm MeV}/c^2. \\end{align*} These results are consistent with p...

  17. Efecto de diferentes métodos de extracción sobre el perfil de ácidos grasos en el aceite de aguacate (Persea americana Mill. var. Hass

    José Alberto Ariza Ortega

    2011-12-01

    Full Text Available El objetivo de este estudio fue evaluar la posible formación de ácidos grasos trans (AGT en el aceite de aguacate, extraído con disolvente (hexano, con y sin calor, y por centrifugación. Para analizar el aceite se emplearon índices químicos, y para la identificación y cuantificación de los ácidos grasos se utilizó Espectroscopía de Infrarrojo con Transformada de Fourier (EITF, en la región media de 400 a 4000 cm-1 y cromatografía de gases. En los resultados del análisis por EITF se demostró que los tres aceites presentaron un pico definido en la región de 968 cm-1 que corresponde a los dobles enlaces trans. Los AGT se cuantificaron < 0,5 g/100 g de aceite, valores menores que el propuesto por The Danish Veterinary and Food Administration para considerar un aceite libre de AGT. De acuerdo con los índices químicos, el método que causó la mínima modificación en la calidad del aceite fue el de extracción por centrifugación.

  18. Efecto de diferentes métodos de extracción sobre el perfil de ácidos grasos en el aceite de aguacate (Persea americana Mill. var. Hass

    Arturo Martínez Zavala

    2011-01-01

    Full Text Available El objetivo de este estudio fue evaluar la posible formación de ácidos grasos trans (AGT en el aceite de aguacate, extraído con disolvente (hexano, con y sin calor, y por centrifugación. Para analizar el aceite se emplearon índices químicos, y para la identificación y cuantificación de los ácidos grasos se utilizó Espectroscopía de Infrarrojo con Transformada de Fourier (EITF, en la región media de 400 a 4000 cm E-1 y cromatografía de gases. En los resultados del análisis por EITF se demostró que los tres aceites presentaron un pico definido en la región de 968 cm E-1 que corresponde a los dobles enlaces trans. Los AGT se cuantificaron < 0,5 g/100 g de aceite, valores menores que el propuesto por The Danish Veterinary and Food Administration para considerar un aceite libre de AGT. De acuerdo con los índices químicos, el método que causó la mínima modificación en la calidad del aceite fue el de extracción por centrifugación.

  19. CAMBIOS EN LOS ÁCIDOS GRASOS DE MEMBRANA DE Microbacterium esteraromaticum GNP5 CON DIFERENTES TEMPERATURAS Y OSMOLARIDADES Changes in Membrane Fatty Acids of Microbacterium esteraromaticum GNP5 with Changes of Temperature and Osmolarity

    GRACIELA NATALIA PUCCI

    2006-06-01

    Full Text Available Microbacterium esteraromaticum es un microorganismo que se aísla con frecuencia de landfarming o procesos de biorremediación de hidrocarburos en la meseta de la Patagonia central (Argentina y se halla sometido a variaciones de temperatura y a cambios de salinidad que se producen naturalmente. Su adaptabilidad a esos cambios climáticos indujo al estudio de las modificaciones que se producen en su membrana celular para resistirlos. En este trabajo se estudió el efecto conjunto de la temperatura y la concentración de cloruro de sodio sobre la composición de los ácidos grasos de membrana en la cepa de Microbacterium esteraromaticum GNP5b. M. esteraromaticum utiliza, frente al incremento de la temperatura, la estrategia es aumentar la longitud de sus ácidos grasos de cadenas ramificada impar (17 átomos de carbono con disminución de 15:0 anteiso, así como el porcentaje de ácidos grasos 15:0 iso (de mayor punto de fusión a partir del respectivo anteiso. El aumento de la salinidad modifica la composición de ácidos grasos siguiendo patrones diferentes según sea la temperatura de incubación. A 14 y 28 °C incrementa los 15:0 iso y 17:0 iso en detrimento de sus homólogos anteiso. A 37 °C este grupo de ácidos grasos no sigue los mismos patrones anteriores. La longitud de cadena, expresada como el índice C15/C17, es errática con el aumento de la salinidad.Microbacterium esteraromaticum is a microorganism that is frequently obtained of cultivations coming from landfarming or hydrocarbons biorremediation processes in the central Patagonia (Argentina and it is subjected to variations of temperature and changes of salinity that take place naturally. Its adaptability to these climatic conditions took us to study the changes of adaptation that take place in the fatty acids of its membranes. This work studied the combined effect of temperature and salt concentration on the membrane fatty acids composition of Microbacterium esteraromaticum GNP5

  20. Modelado de un reactor tubular de lipasas inmovilizadas para la producción de glicerol y ácidos grasos a partir de aceites

    Oddone, Sebastián

    2010-06-01

    Full Text Available Advances in the design of a bioreactor in the fats and oils industry have permitted the hydrolysis of triglycerides in mild conditions and improved productivity while avoiding the formation of unwanted byproducts. The present work develops a mathematical model that describes the hydrolytic activity of a tubular reactor with immobilized lipases for the production of glycerol and fatty acids from the oil trade. Runge Kutta’s numerical method of high order has been applied, considering that there is no accumulation of the substratum in the surface of the membrane, where the enzyme is. At the same time, different equations based on the kinetic model of Michaelis Mentens and the Ping-Pong bi-bi mechanism were examined. Experimental data in discontinuous systems are the basis for the development of the quantitative mathematical model that was used to simulate the process computationally. The obtained results allow for optimizing both the operative variables and the economic aspects of industrial processes.

    Los avances en el diseño de biorreactores en la industria de grasas y aceites permiten realizar la hidrólisis de triglicéridos en condiciones suaves, mejorando la productividad y evitando la formación de subproductos indeseables. En el presente trabajo se desarrolla un modelo matemático que describe la actividad hidrolítica de un reactor tubular con lipasas inmovilizadas para la producción de ácidos grasos a partir de aceites comerciales. Se aplico el método numérico de Runge Kutta de alto orden, considerando que no hay acumulación de sustrato en la superficie de la membrana, donde se encuentra la enzima. Además se analizaron distintas ecuaciones de velocidad de reacción basadas en la cinética de Michaelis-Menten y en un mecanismo de ping-pong bi-bi. Los datos experimentales en sistemas discontinuos forman la base del desarrollo del modelo matemático, empleado para simular el proceso computacionalmente. Los resultados

  1. Esteres metílicos de ácidos grasos como carburantes. Implicaciones económicas, ecológicas y energéticas

    Gómez Herrera, Carlos

    1995-04-01

    Full Text Available Changes in the "Common Agricultural Policy" of the European Union have increased the rapeseed crops on "set-aside" lands remarkably. Rapeseed oils are transesterified with methanol to obtain fatty acid methyl esters. Blends of these esters with diesel oil are sold in petrol stations in different european countries like any other fuel.
    This informative article starts by reviewing basic characteristics of diesel fuel, and continues with an analysis of physical properties, chemical composition and present specifications for the rapeseed methyl esters. Subsequently several implications derived from the industrial development of this biofuel are discussed. These implications are economic (production, consumption, prices, subventions, tax exemptions, ecological (nearly zero emissions for whole cycle of carbon dioxide, other exhaust emissions from combustion, ecobalances, and energetic (complete evaluation of energy expenditure for production, energetic ratios.

    Los cambios en la "Common Agricultural Policy" de la Unión Europea han incrementado notablemente los cultivos de colza en los terrenos "setaside". El aceite de colza se transesterifica con metanol para obtener esteres metílicos de ácidos grasos del aceite de sus semillas. Mezclas de estos metilésteres con gasóleo se venden en gasolineras de diferentes países europeos como cualquier otro carburante.
    Este artículo de información comienza por una revisión de características básicas del gasóleo, seguida por un análisis de las propiedades físicas, la composición química y las especificaciones actuales de los metilésteres de colza. A continuación se discuten diversas implicaciones derivadas del desarrollo industrial de este biocombustible. Las mismas son económicas (producción, consumo, precios, subvenciones, exención de Impuestos, ecológicas (emisiones casi nulas para el ciclo completo del dióxido de carbono, otras emisiones procedentes de la combusti

  2. Unambiguous UML Composite Structures: The OMEGA2 Experience

    Ober, Iulian; Dragomir, Iulia

    Starting from version 2.0, UML introduced hierarchical composite structures, which are a very expressive way of defining complex software architectures, but which have a very loosely defined semantics in the standard. In this paper we propose a set of consistency rules that ensure UML composite structures are unambiguous and can be given a precise semantics. Our primary application of the static consistency rules defined in this paper is within the OMEGA UML profile [6], but these rules are general and applicable to other hierarchical component models based on the same concepts, such as MARTE GCM or SysML. The rule set has been formalized in OCL and is currently used in the OMEGA UML compiler.

  3. OMEGA: The operational multiscale environment model with grid adaptivity

    Bacon, D.P.

    1995-07-01

    This review talk describes the OMEGA code, used for weather simulation and the modeling of aerosol transport through the atmosphere. Omega employs a 3D mesh of wedge shaped elements (triangles when viewed from above) that adapt with time. Because wedges are laid out in layers of triangular elements, the scheme can utilize structured storage and differencing techniques along the elevation coordinate, and is thus a hybrid of structured and unstructured methods. The utility of adaptive gridding in this moded, near geographic features such as coastlines, where material properties change discontinuously, is illustrated. Temporal adaptivity was used additionally to track moving internal fronts, such as clouds of aerosol contaminants. The author also discusses limitations specific to this problem, including manipulation of huge data bases and fixed turn-around times. In practice, the latter requires a carefully tuned optimization between accuracy and computation speed.

  4. Thermal photon emission from the pi-rho-omega system

    Holt, Nathan P M; Rapp, Ralf

    2016-01-01

    We investigate thermal photon emission rates in hot hadronic matter from a system consisting of pi, rho, and omega mesons. The rates are calculated using both relativistic kinetic theory with Born diagrams as well as thermal field theory at the two-loop level. This enables us to cross-check our calculations and to manage a pole contribution that arises in the Born approximation corresponding to the omega -> pi^0 gamma radiative decay. After implementing hadronic form factors to account for finite-size corrections, we find that the resulting photo-emission rates are comparable to existing results from pi rho -> pi gamma processes in the energy regime of 1-3 GeV. We expect that our new sources will provide a non-negligible contribution to the total hadronic rates, thereby enhancing calculated thermal photon spectra from heavy-ion collisions, which could improve the description of current direct-photon data from experiment.

  5. Branching Fraction Measurement of B to omega l nu decays

    Lees, J.P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Palano, A.; /Bari U. /INFN, Bari; Eigen, G.; Stugu, B.; /Bergen U.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; /LBL, Berkeley /UC, Berkeley; Koch, H.; Schroeder, T.; /Ruhr U., Bochum; Asgeirsson, D.J.; Hearty, C.; Mattison, T.S.; McKenna, J.A.; So, R.Y.; /British Columbia U.; Khan, A.; /Brunel U.; Blinov, V.E.; /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /Ferrara U. /INFN, Ferrara /Frascati /Genoa U. /INFN, Genoa /Indian Inst. Tech., Guwahati /Harvard U. /Harvey Mudd Coll. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U., Comp. Sci. Dept. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U. /Milan U. /INFN, Milan /Mississippi U. /Montreal U. /Naples U. /INFN, Naples /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U.; /more authors..

    2012-06-13

    We present a measurement of the B{sup +} {yields} {omega}{ell}{sup +}{nu} branching fraction based on a sample of 467 million B{bar B} pairs recorded by the BABAR detector at the SLAC PEP-II e{sup +}e{sup -} collider. We observe 1041 {+-} 133 signal decays, corresponding to a branching fraction of {Beta}(B{sup +} {yields} {omega}{ell}{sup +}{nu}) = (1.15 {+-} 0.15 {+-} 0.12) x 10{sup -4}, where the first error is statistical and the second is systematic. The dependence of the decay rate on q{sup 2}, the momentum transfer squared to the lepton system, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.

  6. Important bioactive properties of omega-3 fatty acids

    Rui Xu

    2015-06-01

    Full Text Available Good health has been linked with healthy diet. N-3 fatty acids are required for proper functioning of many physiological systems. There is a large body of evidence documenting the effects of polyunsaturated fatty acids with the first double bond at the third position from methyl-terminal on health benefits. Scientific evidence is accumulating to substantiate the role omega-3 fatty acids play in conditions such as cardiovascular disease, certain cancers and other diseases. The availability of n-3 fatty acids to various tissues is of major importance to health and depends on dietary intake for both normal development and in the prevention and management of chronic diseases.In this review we will summarize the biological properties of omega-3 fatty acids.

  7. Deeply virtual and exclusive electroproduction of omega mesons

    Morand, L; Mutchler, G S; Schumacher, R A; Todor, L; Adams, G; Anciant, E; Anghinolfi, M; Asavapibhop, B; Audit, G; Auger, T; Avakian, H; Bagdasaryan, H; Ball, J P; Barrow, S; Battaglieri, M; Beard, K; Bektasoglu, M; Bellis, M; Berman, Barry L; Bianchi, N; Biselli, A S; Boiarinov, S; Bonner, B E; Bouchigny, S; Bradford, R; Branford, D; Briscoe, W J; Brooks, W K; Burkert, V D; Butuceanu, C; Calarco, J R; Carman, D S; Carnahan, B; Cetina, C; Ciciani, L; Cole, P L; Coleman, A; Cords, D; Corvisiero, P; Crabb, D; Crannell, H; Cummings, J P; De Sanctis, E; De Vita, R; Degtyarenko, P V; Denizli, H; Dennis, L; Dharmawardane, K V; Dhuga, K S; Djalali, C; Dodge, G E; Doughty, D C; Dragovitsch, P; Dugger, M; Dytman, S; Eckhause, M; Egiyan, H; Egiyan, K S; Elouadrhiri, L; Empl, A; Eugenio, P; Fatemi, R; Feuerbach, R J; Ficenec, J; Forest, T A; Funsten, H; Gaff, S J; Gai, M; Gavalian, G; Gilad, S; Gilfoyle, G P; Giovanetti, K L; Girard, P; Gordon, C I O; Griffioen, K; Guidal, M; Guillo, M R; Guo, L; Gyurjyan, V; Hadjidakis, C; Hakobyan, R S; Hardie, J; Heddle, D; Heimberg, P; Hersman, F W; Hicks, K; Hicks, R S; Holtrop, M; Hu, J; Hyde-Wright, C E; Ilieva, Y; Ito, M M; Jenkins, D; Joo, K; Kelley, J H; Khandaker, M; Kim, K Y; Kim, K; Kim, W; Klein, A; Klein, F J; Klimenko, A V; Klusman, M; Kossov, M; Kramer, L H; Kuang, Y; Kuhn, S E; Lachniet, J; Laget, J M; Lawrence, D; Ji Li; Lukashin, K; Manak, J J; Marchand, C; McAleer, S; McCarthy, J; Mecking, B A; Mehrabyan, S S; Melone, J J; Mestayer, M D; Meyer, C A; Mikhailov, K; Minehart, R C; Mirazita, M; Miskimen, R; Morrow, S A; Muccifora, V; Müller, J; Napolitano, J; Nasseripour, R; Nelson, S O; Niccolai, S; Niculescu, G; Niculescu, I; Niczyporuk, B B; Niyazov, R A; Nozar, M; O'Brien, J T; O'Rielly, G V; Osipenko, M; Park, K; Pasyuk, E A; Peterson, G; Philips, S A; Pivnyuk, N; Pocanic, D; Pogorelko, O I; Polli, E; Pozdniakov, S; Preedom, B M; Price, J W; Prok, Y; Protopopescu, D; Qin, L M; Quinn, B; Raue, B A; Riccardi, G; Ricco, G; Ripani, M; Ritchie, B G; Ronchetti, F; Rossi, P; Rowntree, D; Rubin, P D; Sabatie, F; Sabourov, K; Salgado, C; Santoro, J P; Sapunenko, V; Serov, V S; Shafi, A; Sharabyan, Yu G; Shaw, J; Simionatto, S; Skabelin, A V; Smith, E S; Smith, L C; Sober, D I; Spraker, M; Stavinsky, A V; Stepanyan, S; Stoler, P; Strakovsky, I I; Strauch, S; Taiuti, M; Tedeschi, D J; Thoma, U; Thompson, R; Tur, C; Ungaro, M; Vineyard, M F; Vlassov, A V; Wang, K; Weinstein, L B; Weisberg, A; Weller, H; Weygand, D P; Whisnant, C S; Wolin, E; Wood, M H; Yegneswaran, A; Yun, J; Zhang, B; Zhao, J; Zhou, Z

    2005-01-01

    The exclusive omega electroproduction off the proton was studied in a large kinematical domain above the nucleon resonance region and for the highest possible photon virtuality (Q2) with the 5.75 GeV beam at CEBAF and the CLAS spectrometer. Cross sections were measured up to large values of the four-momentum transfer (-t omega p, even for Q2 as large as 5 GeV2. Contributions of handbag diagrams, related to Generalized Parton Distributions in the nucleon, are therefore difficult to extract for this process. Remarkably, the high-t behaviour of the cross sections is nearly Q2-independent, which may be interpreted as a coupling of the photon to a point-like object in this kinematical limit.

  8. Laser scattering from long scalelength plasmas on Omega. Final report

    Drake, R.P. [Univ. of Michigan, Ann Arbor, MI (United States); Seka, W.; Craxton, R.S. [Univ. of Rochester, NY (United States); Bauer, B.S. [Univ. of Nevada, Reno, NV (United States)

    1998-12-31

    In this project, the authors accomplished the tasks called for in the revised statement of work associated with this grant. Specifically, they accomplished: (1) active participation in the design of long-scalelength plasmas for Omega and in experiments to characterize these plasmas; (2) development of software that permits the rapid evaluation of laser-scattering diagnostic possibilities involving the standard parametric instabilities. It must be able to account for all 60 beams in Omega in addition to a probe beam and variable detector locations; and (3) design, purchase of components for, and assembly of instrumentation to make such measurements, providing for long-term versatility in the type of measurement. The project background and these accomplishments are discussed.

  9. Omega process for the use of substitute fuels; Waste energy: Omega-Verfahren zur Verwertung von Ersatzbrennstoffen

    Moeser, J. [Oxytec Energy GmbH, Leipzig (Germany)

    2003-03-01

    Only about 25% of residue accumulating in the Federal Republic of Germany is currently used for the purposes of energy. This residue will be converted into fuel for power stations by the Omega process when the dumping of waste with a calorific value in excess of 5 MJ/kg is prohibited with effect from 2005. This oxygen melting process is suitable for the local use of substitute fuels. Waste is converted into a high-quality synthesis gas with a wide range of uses. The Omega process combines drying, thermal decomposition, gasification and melting of the material used in a single-stage process. This is now technologically possible for the first time by combining a metallurgical cupola furnace with a traditional gas producer. The highly-calorific synthesis gas produced by the Omega process can be used in block heat and power stations or as an industrial fuel gas, instead of natural gas. It is also suitable as a starting material for synthesising methanol. The gas is specifically processed in the multi-stage gas scrubber downstream of the reactor. The by-products of the Omega process are recyclable slag and pig iron. The only residue is filter dust from gas scrubbing. The first power station based on the Omega process is currently under construction in Rothenburg. The plant, which has an electrical output of 7.5 MW and an uncouplable thermal output of up to 10 MW, should go into operation not later than 2005. Contracts have already been signed for the supply of electricity to the grid of Esag Energieversorgung Sachsen Ost AG, Dresden, and connection to the Rothenburg heating grid. Approximately 50,000 t of substitute fuel should be used annually. (orig.) [German] Ab dem Jahr 2005 duerfen Abfaelle mit einem Heizwert von mehr als 5 MJ/kg nicht mehr deponiert werden. Die anfallenden Reststoffe eignen sich als Rohstoff fuer Kraftwerke nach dem Omega-Verfahren zur dezentralen Verwertung. Der Autor beschreibt dieses innovative Sauerstoffschmelzverfahren, dessen Vorteile und

  10. Synthesis and characterization of PdAg as a catalyst for oxygen reduction reaction in acid medium; Sintesis y caracterizacion de PdAg como catalizador para la reaccion de reduccion de oxigeno en medio acido

    Martinez-Casillas, D. C.; Vazquez-Huerta, G.; Solorza-Feria, O. [Centro de Investigacion y de Estudios Avanzados del IPN, Mexico D.F. (Mexico)]. E-mail: dcmartinez@cinvestav.mx

    2009-09-15

    This work presents the synthesis of the binary compound PdAg and the electrochemical characterization for oxygen reduction reaction (ORR) in acid medium. The catalyst is obtained from the reduction of Pd(NO{sub 3}){sub 2}·2H{sub 2}O and AgNO{sub 3} with NaBH{sub 4} in THF. The synthesized compound was physically characterized with transmission electron microscopy (TEM), sweep electron microscopy (SEM) and x-ray diffraction (XRD) of powder. Electrochemical studies were conducted to determine the catalytic activity and intrinsic properties of the PdAg material for the ORR in acid medium using cyclic voltamperometry (CV), rotary disc electrode (RDE) and electrochemical impedance spectroscopy (EIS) in a solution of H{sub 2}SO{sub 4} 0.5 M at 25 degrees Celsius. The electrochemical current-potential responses were compared to those of palladium and platinum. The kinetic results showed an increase in the performance of the bimetallic electrocatalyst containing Ag as compared to pure Pd, but less than that obtained with nanometric Pt. The Tafel slopes obtained are roughly120 mV dec-1, similar to that reported for Pt and Pd and for other Ru-based electrocatalysts. [Spanish] En este trabajo se presentan la sintesis del compuesto binario PdAg y su caracterizacion electroquimica para la reaccion de reduccion de oxigeno (RRO) en medio acido. El catalizador se obtuvo a partir de la reduccion de Pd(NO{sub 3}){sub 2}·2H{sub 2}O y AgNO{sub 3} con NaBH{sub 4} en THF. El compuesto sintetizado se caracterizo fisicamente por microscopia electronica de transmision (MET), microscopia electronica de barrido (MEB) y difraccion de rayos X (DRX) de polvos. Se realizaron estudios electroquimicos para determinar la actividad catalitica y las propiedades intrinsecas del material de PdAg para la reaccion de reduccion de oxigeno (RRO) en medio acido, utilizando las tecnicas de voltamperometria ciclica (VC), electrodo disco rotatorio (EDR) y espectroscopia de impedancia electroquimica (EIE), en

  11. Canadian Consumer Attitudes and Purchasing Behaviour of Omega-3 Products

    Nilsson, Tomas K.H.; Chase, Darren; Emunu, John Paul; McCann-Hiltz, Diane; Peng, Yanning

    2007-01-01

    The development of innovative functional food products is a major trend in today's food industry. The growth of this industry is driven by increased consumer awareness of their own health deficiencies, increased understanding of the possible health benefits of functional foods, development in formulation technologies, a positive regulatory environment and changing consumer demographics and lifestyles. While there has been a proliferation of omega-3 products such as milk, eggs, yogurt, and mar...

  12. Omega-3 Fatty Acids and Skeletal Muscle Health

    Stewart Jeromson; Gallagher, Iain J.; Stuart D. R. Galloway; D. Lee Hamilton

    2015-01-01

    Skeletal muscle is a plastic tissue capable of adapting and mal-adapting to physical activity and diet. The response of skeletal muscle to adaptive stimuli, such as exercise, can be modified by the prior nutritional status of the muscle. The influence of nutrition on skeletal muscle has the potential to substantially impact physical function and whole body metabolism. Animal and cell based models show that omega-3 fatty acids, in particular those of marine origin, can influence skeletal muscl...

  13. The operational multiscale environment model with grid adaptivity (OMEGA)

    SAIC's Center for Atmospheric Physics (CAP) has developed a novel multiscale atmospheric simulation system for advanced, high-resolution weather forecasting and forecasting dosage and hazard levels due to the atmospheric release of aerosols and gases. The Operational Multiscale Environment model with Grid Adaptivity (OMEGA), has a horizontal grid resolution that ranges from 100 km to 1 km and a vertical resolution that ranges from a few meters to 1 km

  14. Design of the OMEGA Laser Target Chamber Tritium Removal System

    Preparations are currently underway at the OMEGA laser at the University of Rochester Laboratory for Laser Energetics (UR/LLE) to conduct direct drive laser implosion campaigns with inertial confinement fusion targets containing deuterium-tritium (DT) cryogenic ice layers. The OMEGA Cryogenic Target Handling System will fill plastic targets with high-pressure DT (150 MPa) at 300 to 500 K, cool them down to cryogenic temperature (<25 K), form the DT ice layer, and transport the targets to the OMEGA laser target chamber. Targets will then be shot with the 60-beam 30-kJ OMEGA laser. A tritium removal system has been designed to remove tritium from effluents associated with operation of the target chamber and its associated diagnostic antechambers, vacuum pumping systems, and target insertion systems. The design of the target chamber tritium removal system (TCTRS) is based on catalytic oxidation of DT and tritiated methane to tritiated water (DTO), followed by immobilization of DTO on molecular sieves. The design of the TCTRS presented a challenge due to the low tritium release limits dictated by the tritium license at UR/LLE. Aspen Plus, a commercial software package intended for the simulation and design of chemical processing systems operating at steady state, was used to simulate and design the TCTRS. A second commercial software package, Aspen ADSIM, was used to simulate and design the TCTRS molecular sieve beds, which operate at unsteady state. In this paper, we describe the design of the TCTRS and the benefits that were realized by use of the Aspen Plus and Aspen ADSIM software packages

  15. Hilbert's Incompleteness, Chaitin's $\\Omega$ number and Quantum Physics

    Kieu, Tien D.

    2001-01-01

    To explore the limitation of a class of quantum algorithms originally proposed for the Hilbert's tenth problem, we consider two further classes of mathematically non-decidable problems, those of a modified version of the Hilbert's tenth problem and of the computation of the Chaitin's $\\Omega$ number, which is a representation of the G\\"odel's Incompletness theorem. Some interesting connection to Quantum Field Theory is pointed out.

  16. The slow proton trigger for the CERN OMEGA spectrometer

    A full description of the calibration and setting-up of the Slow Proton Trigger for the CERN OMEGA spectrometer is given. The essential feature of the trigger is the ability to identify protons from pions using the time-of-flight and pulse height information obtained with a counter made of long slabs of plastic scintillator coupled to 58 AVP photomultipliers. The performances obtained both in proton and pion beams and during the experiment are reported. (Auth.)

  17. Fate in digestion in vitro of several food components, including some toxic compounds coming from omega-3 and omega-6 lipids

    Goicoechea, E.; Brandon, E.F.A.; Blokland, M.H.; Guillén, M.D.

    2011-01-01

    In this study it was proved the formation of oxygenated alpha,beta-unsaturated aldehydes (OaßUAs) of 6, 7, 9 and 10 carbon atoms during the thermal treatment (190 °C with aeration) of a commercial vegetable oil rich in omega-3 and omega-6 acyl groups, which also contained small amounts of added prot

  18. The Effects of Dietary Changes in the Ratio of Omega-3 to Omega-6 Polyunsaturated Fatty Acids on Lung Carcinogenesis in A/J Mice

    Polyunsaturated fatty acid metabolites are known to be involved in inflammation, and fatty acid precursors and metabolites may also exert genomic control over the expression of genes involved in proliferation and differentiation. Some researchers suggest that a higher ratio of omega-3/omega-6 fatty ...

  19. The omega-square hypothesis for the seismic source

    Molchan, G

    2016-01-01

    The omega-square hypothesis assumes that the ground displacement u(t) in the far-field zone decays as the inverse square of frequency in the range ~1-30 Hz. This empirical fact remains theoretically unjustified. Our analysis of the problem is based on an integral representation of u(t) in terms of the source time function f and on the spectrum analysis of local features in f. The goal is to select the local features that will enable one to generate the omega-square behavior of u(t) on a large set of receivers. We found two appropriate fragments of f : first , f exhibits a local inverse-square-root behavior near the rupture front where the frontal surface is piecewise smooth (but not smooth and not rough ); and second, f is bounded near the rupture front where the frontal surface has a slight roughness (the Hurst parameter near 1). These facts can be useful for understanding the omega-square spectral behavior of the kinematic source models.

  20. The OMEGA Gas Sampling System and Radiochemical Diagnostic Development

    Stoyer, Mark; Hudson, Bryant; Sangster, Craig; Freeman, Charlie; Schwartz, B.; Olsen, M.

    2001-10-01

    Radiochemical diagnostics for the National Ignition Facility (NIF) will address important issues such as shell rho-R, mix and charged particle production in ignition and near-ignition capsules. Many reaction products from charged particle reactions are noble gases. A gas sampling system for obtaining radiochemical samples following OMEGA shots has been assembled at LLNL and is being installed on the target chamber at OMEGA. Results of benchtop tests and possibly target chamber background collections with such a system will be discussed. A primary goal is to demonstrate reproducible collection efficiencies for this new technical capability of near 100include measuring collection efficiencies for certain reaction processes and to test the collection scheme for other low energy reaction products. Should high collection efficiencies be demonstrated, and the background be low and well-characterized, test reactions of 18O(alpha,n)21Ne or 80Kr(n,2n)79Kr and 38Ar(n,2n)37Ar will be investigated at OMEGA. In addition, other collection schemes are being considered for reactions that do not result in a noble gas isotope. Some simulations of expected activations from several capsule designs will be discussed. This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.

  1. Exclusive $\\omega$ meson muoproduction on transversely polarised protons

    Adolph, C; Aghasyan, M.; Akhunzyanov, R.; Alexeev, M.G.; Alexeev, G.D.; Amoroso, A.; Andrieux, V.; Anfimov, N.V.; Anosov, V.; Augustyniak, W.; Austregesilo, A.; Azevedo, C.D.R.; Badelek, B.; Balestra, F.; Barth, J.; Beck, R.; Bedfer, Y.; Bernhard, J.; Bicker, K.; Bielert, E.R.; Birsa, R.; Bisplinghoff, J.; Bodlak, M.; Boer, M.; Bordalo, P.; Bradamante, F.; Braun, C.; Bressan, A.; Buechele, M.; Chang, W. -C.; Chatterjee, C.; Chiosso, M.; Choi, I.; Chung, S. -U.; Cicuttin, A.; Crespo, M.L.; Curiel, Q.; Dalla Torre, S.; Dasgupta, S.S.; Dasgupta, S.; Denisov, O. Yu.; Dhara, L.; Donskov, S.V.; Doshita, N.; Duic, V.; Duennweber, W.; Dziewiecki, M.; Efremov, A.; Eversheim, P.D.; Eyrich, W.; Faessler, M.; Ferrero, A.; Finger, M.; Fischer, H.; Franco, C.; von Hohenesche, N. du Fresne; Friedrich, J.M.; Frolov, V.; Fuchey, E.; Gautheron, F.; Gavrichtchouk, O.P.; Gerassimov, S.; Giordano, F.; Gnesi, I.; Gorzellik, M.; Grabmueller, S.; Grasso, A.; Grosse Perdekamp, M.; Grube, B.; Grussenmeyer, T.; Guskov, A.; Haas, F.; Hahne, D.; von Harrach, D.; Hashimoto, R.; Heinsius, F.H.; Heitz, R.; Herrmann, F.; Hinterberger, F.; Horikawa, N.; dHose, N.; Hsieh, C. -Y.; Huber, S.; Ishimoto, S.; Ivanov, A.; Ivanshin, Yu.; Iwata, T.; Jahn, R.; Jary, V.; Joosten, R.; Joerg, P.; Kabuss, E.; Ketzer, B.; Khaustov, G.V.; Khokhlov, Yu. A.; Kisselev, Yu.; Klein, F.; Klimaszewski, K.; Koivuniemi, J.H.; Kolosov, V.N.; Kondo, K.; Koenigsmann, K.; Konorov, I.; Konstantinov, V.F.; Kotzinian, A.M.; Kouznetsov, O.M.; Kraemer, M.; Kremser, P.; Krinner, F.; Kroumchtein, Z.V.; Kulinich, Y.; Kunne, F.; Kurek, K.; Kurjata, R.P.; Lednev, A.A.; Lehmann, A.; Levillain, M.; Levorato, S.; Lian, Y. -S.; Lichtenstadt, J.; Longo, R.; Maggiora, A.; Magnon, A.; Makins, N.; Makke, N.; Mallot, G.K.; Marchand, C.; Marianski, B.; Martin, A.; Marzec, J.; Matousek, J.; Matsuda, H.; Matsuda, T.; Meshcheryakov, G.V.; Meyer, M.; Meyer, W.; Michigami, T.; Mikhailov, Yu. V.; Mikhasenko, M.; Mitrofanov, E.; Mitrofanov, N.; Miyachi, Y.; Montuenga, P.; Nagaytsev, A.; Nerling, F.; Neyret, D.; Nikolaenko, V.I.; Novy, J.; Nowak, W. -D.; Nukazuka, G.; Nunes, A.S.; Olshevsky, A.G.; Orlov, I.; Ostrick, M.; Panzieri, D.; Parsamyan, B.; Paul, S.; Peng, J. -C.; Pereira, F.; Pesek, M.; Peshekhonov, D.V.; Pierre, N.; Platchkov, S.; Pochodzalla, J.; Polyakov, V.A.; Pretz, J.; Quaresma, M.; Quintans, C.; Ramos, S.; Regali, C.; Reicherz, G.; Riedl, C.; Roskot, M.; Ryabchikov, D.I.; Rybnikov, A.; Rychter, A.; Salac, R.; Samoylenko, V.D.; Sandacz, A.; Santos, C.; Sarkar, S.; Savin, I.A.; Sawada, T.; Sbrizzai, G.; Schiavon, P.; Schmidt, K.; Schmieden, H.; Schoenning, K.; Schopferer, S.; Seder, E.; Selyunin, A.; Shevchenko, O. Yu.; Silva, L.; Sinha, L.; Sirtl, S.; Slunecka, M.; Smolik, J.; Sozzi, F.; Srnka, A.; Steffen, D.; Stolarski, M.; Sulc, M.; Suzuki, H.; Szabelski, A.; Szameitat, T.; Sznajder, P.; Takekawa, S.; Tasevsky, M.; Tessaro, S.; Tessarotto, F.; Thibaud, F.; Tosello, F.; Tskhay, V.; Uhl, S.; Veloso, J.; Virius, M.; Vondra, J.; Wallner, S.; Weisrock, T.; Wilfert, M.; ter Wolbeek, J.; Zaremba, K.; Zavada, P.; Zavertyaev, M.; Zemlyanichkina, E.; Ziembicki, M.; Zink, A.

    2016-01-01

    Exclusive production of $\\omega$ mesons was studied at the COMPASS experiment by scattering $160~\\mathrm{GeV}/\\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\\mathrm{GeV}/\\mathit{c})^2 < Q^2 < 10~(\\mathrm{GeV}/\\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\\mathit{Bj}} < 0.3$ and transverse momentum squared of the $\\omega$ meson $0.05~(\\mathrm{GeV}/\\mathit{c})^2 < p_{T}^{2} < 0.5~(\\mathrm{GeV}/\\mathit{c})^2$. The measured asymmetries are sensitive to the nucleon helicity-flip Generalised Parton Distributions (GPD) $E$ that are related to the orbital angular momentum of quarks, the chiral-odd GPDs $H_{T}$ that are related to the transversity Parton Distribution Functions, and the sign of the $\\pi\\omega$ transition form factor. The results are compared to recent calculations of a GPD-based model.

  2. OMEGA ICF experiments and preparations for direct drive on NIF

    Direct-drive laser-fusion ignition experiments rely on detailed understanding and control of irradiation uniformity, the Rayleigh-Taylor instability, and target fabrication. LLE is investigating various theoretical aspects of a direct-drive NIF ignition target based on an 'all-DT' design: a spherical target of ∼3.4-mm diameter, 1 to 2 μm of CH wall thickness, and an ∼340-μm DT-ice layer near the triple point of DT (∼19 K). OMEGA experiments are designed to address the critical issues related to direct-drive laser fusion and to provide the necessary data to validate the predictive capability of LLE computer codes. The cryogenic targets to be used on OMEGA are hydrodynamically equivalent to those planned for the NIF. The current experimental studies on OMEGA address the essential components of direct-drive laser fusion: irradiation uniformity and laser imprinting, Rayleigh-Taylor growth and saturation, compressed core performance and shell fuel mixing, laser plasma interactions and their effect on target performance, and cryogenic target fabrication and handling. (author)

  3. Positron--Electron, Pair-Plasma Production on OMEGA EP

    Myatt, J.; Maximov, A. V.; Short, R. W.

    2006-10-01

    It is shown that an e^+e^- pair-plasma can be created on OMEGA EP, a feat yet to be achieved in the laboratory. We calculate that a yield of between 10^11 and 10^12 positrons can be produced on OMEGA EP by a combination of the Bethe--Heitler conversion of hard x-ray bremsstrahlung and the trident process, assuming a total laser energy of 5 kJ. For this expanding e^+e^- cloud to be a plasma, there must be many particles in a Debye sphere, and the cloud must be many Debye lengths in size. A magnetic field produced by a second OMEGA EP beam will provide the necessary confinement. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-92SF19460. J. D. Bjorken and S. D. Drell, Relativistic Quantum Mechanics, International Series in Pure and Applied Physics (McGraw-Hill, New York, 1964); D. A. Gryaznykh, Ya. Z. Kandiev, and V. A. Lykov, JETP Lett. 67, 257 (1998); K. Nakashima and H. Takabe, Phys. Plasmas 9, 1505 (2002). E. P. Liang, S. C. Wilks, and M. Tabak, Phys. Rev. Lett. 81, 4887 (1998).

  4. 3ω beam timing diagnostic for the OMEGA laser facility

    Katz, J.; Donaldson, W. R.; Huff, R.; Hill, E. M.; Kelly, J. H.; Kwiatkowski, J.; Brannon, R. B.

    2015-08-01

    The Omega Laser Facility at the University of Rochester's Laboratory for Laser Energetics is a 60-beam system used for inertial confinement fusion experiments. Uniform drive of the target surface requires precise beam timing to achieve accurate power balance. A new diagnostic has been implemented for measuring the relative beam-to-beam arrival time of each of the 60 beamlines. A 900-μm spherical diffuser placed at the target chamber center serves as a quasi-isotropic scattering source that allows a fixed optical detector to view light from any individual beamline. During a beam-timing run, the OMEGA laser is configured to generate frequency-tripled, 351-nm ultraviolet (UV) pulses with energies of ~50 pJ at a repetition rate of 5 Hz. Light from the scattering target is optically relayed to a fast photomultiplier tube and recorded on a digital oscilloscope. A portion of the original infrared (IR) seed pulse is fiber optically delivered to the beam-timing oscilloscope and recorded using a photodiode. By recording the scattered UV pulse and the IR seed on the same oscilloscope trace, a jitter-free measurement of the beam's arrival time can be made. Discrepancies in beam timing are corrected by adjusting the total optical path length of the beamlines. Typical variation in the measured arrival times of all 60 OMEGA beams after adjustment is <5 ps root mean square

  5. Spin-2 $N\\Omega$ Dibaryon from Lattice QCD

    Etminan, Faisal; Aoki, Sinya; Doi, Takumi; Hatsuda, Tetsuo; Ikeda, Yoichi; Inoue, Takashi; Ishii, Noriyoshi; Murano, Keiko; Sasaki, Kenji

    2014-01-01

    We investigate properties of the $N$(nucleon)-$\\Omega$(Omega) interaction in lattice QCD to seek for possible dibaryon states in the strangeness $-3$ channel. We calculate the $N\\Omega$ potential through the equal-time Nambu-Bethe-Salpeter wave function in 2+1 flavor lattice QCD with the renormalization group improved Iwasaki gauge action and the nonperturbatively $\\mathcal{O}(a)$ improved Wilson quark action at the lattice spacing $a\\simeq 0.12$ fm on a (1.9 fm)$^{3}\\times$ 3.8 fm lattice. The $ud$ and $s$ quark masses in our study correspond to $m_{\\pi}= 875(1)$ MeV and $m_{K}= 916(1)$ MeV. At these parameter values, the central potential in the S-wave with the spin 2 shows attractions at all distances.By solving the Schr\\"{o}dinger equation with this potential, we find one bound state whose binding energy is $18.9(5.0)(^{+12.1}_{-1.8})$ MeV, where the first error is the statistical one, while the second represents the systematic error.

  6. EMBOLISMO GRASO EN UN NIÑO CON DISTROFIA MUSCULAR DE DUCHENNE Y FRACTURA BILATERAL DE FÉMUR. UNA RARA ASOCIACIÓN. Fat embolism syndrome in a child with muscular dystrophy of Duchenne type bilateral femur fracture. A rare association.

    Enrique Vergara Amador

    2007-03-01

    Full Text Available Las fracturas de fémur en pacientes que sufren de distrofia muscular de Duchenne (DMD son frecuentes, con una incidencia entre 15-44 por ciento. El embolismo graso se presenta en fracturas de huesos largos generalmente asociado a trauma de alta energía o a lesiones extensas de tejidos blandos. El diagnóstico de embolismo graso no es tan frecuente en niños posiblemente porque cursa con presentaciones subclínicas. No existen reportes de embolismo graso asociado a distrofia muscular de Duchenne. Informamos el caso de un niño con distrofia muscular Duchenne que sufrió fractura bilateral de fémur y embolismo graso.It is high the frequency of femur fracture in children with Duchenne Muscular Dystrophy (DMD, with an incidence between 15 and 44%. The fatty embolism is presented in fractures of long bones generally associated to trauma of high energy or to extensive lesions of soft tissues. The diagnosis is not frequent in children probably because they can be presentations subclínicas. We could not find reports of fatty embolism associated to Duchenne muscular dystrophy. We present the case of a boy with Duchenne muscular dystrophy that suffered bilateral fracture of femur and fatty embolism.

  7. Variación cuantitativa y cualitativa de la composición en ácidos grasos de Crypthecodinium cohnii en condiciones de supresión de nitrógeno

    Carmona, L.

    2008-03-01

    Full Text Available Crypthecodinium cohnii is a heterotrophic dinoflagellate that can achieve a lipid content greater than 20% on dry weight. DHA can represent up to 40% of the total fatty acids. Our objective was to investigate the variation in fatty acid content when growth conditions are optimal compared with when there is limited growth, due to the absence of nitrogen in the media. Nitrogen-limited growth conditions caused the cells to stop dividing and accumulate lipids, principally as docohexanoic acid (DHA. Oxygen availability in the culture favoured DHA accumulation. In the cultures without nitrogen and with oxygen availability there was a lipid cell content 3,18 times higher than in the control condition (with nitrogen and air, and 2,25 higher than those without nitrogen and air. C. cohnii can be used as an optimal DHA source for the production of phytodiets in aquaculture.Crypthecodinium cohnii, es un dinoflagelado marino heterotrófico estricto, que puede alcanzar contenidos en lípidos superiores al 40% de su peso seco, representando el DHA más del 40% del conjunto total de ácidos grasos. El objetivo del presente trabajo fue el de establecer el perfil de variación de los ácidos grasos en condiciones de óptima disponibilidad de nutrientes y de supresión de nitrógeno. Los resultados muestran que en condiciones de supresión de nitrógeno las células dejan de dividirse y empiezan a acumular lípidos, especialmente ácido docosahexaenoico (DHA. La disponibilidad de oxígeno en el medio también favorece este proceso. En los cultivos sin nitrógeno y con disponibilidad de oxígeno se alcanzó un contenido celular de ácidos grasos 3,18 veces superior al alcanzado en la condición control (con nitrógeno y aire y 2,25 al observado en los cultivos sin nitrógeno no burbujeados. Crypthecodinium cohnii puede constituir una óptima fuente de DHA para la elaboración de fitodietas en acuicultura.

  8. ACTIVIDAD ANTIOXIDANTE Y PERFIL DE ÁCIDOS GRASOS DE LAS SEMILLAS DE JABUTICABA (Myrciaria cauliflora BERG Antioxidant Activity and Profile Fatty Acids of Jabuticaba Seeds (Myrciaria cauliflora Berg

    JORGE NEUZA

    2011-08-01

    Full Text Available Múltiples compuestos naturales encontrados en frutas, cereales y vegetales presentan actividad antioxidante. Este trabajo tuvo como objetivo caracterizar las semillas de jabuticaba (Myrciaria cauliflora Berg en cuanto a su composición proximal y potencial antioxidante, y evaluar el perfil de ácidos grasos en el aceite extraído de las mismas. Para la obtención del extracto, las semillas deshidratadas y trituradas fueron extraídas con alcohol etílico por 30 minutos, en la proporción de 1:3 de semillas:alcohol etílico, bajo agitación continua, a temperatura ambiente. Seguidamente, la mezcla fue filtrada y el sobrenadante deshidratado a 40 ºC con la finalidad de determinar, por pesaje directo, rendimiento en materia seca del extracto. De acuerdo con los resultados obtenidos, las semillas de jabuticaba mostraron ser fuente de carbohidratos totales importante, además presentaron actividad antioxidante relevante. El aceite de jabuticaba presentó porcentaje significativo de ácidos grasos poliinsaturados, con predominancia del ácido linoleico y α-linolénico, ácidos grasos esenciales.Numerous natural compounds found in fruits, grains and vegetables have antioxidant activity. This work aimed to characterize jabuticaba seeds (Myrciaria cauliflora Berg by proximate composition, antioxidant activity and fatty acids profile of their extracted oil. To obtain the extract, the dehydrated and triturated seeds were extracted with ethyl alcohol for 30 min, at a proportion of 1:3 of seeds:ethyl alcohol, under continuous agitation, at room temperature. Afterwards, the mixture was filtered and the supernatant dehydrated at 40 ºC aiming to determine, by direct weighing, the extract’s dry matter yield. According to the results, the jabuticaba seeds are an important source of total carbohydrates, and also presented relevant antioxidant activity. In the jabuticaba seeds oil, a significant percentage of polyunsaturated fatty acids stood out, with

  9. Predicción del número de cetano de biocombustibles a partir de su composición de ácidos grasos//Cetane number estimation of biofuels from their fatty acid composition

    Yisel Sánchez-Borroto

    2012-05-01

    Full Text Available El número de cetano (CN es una de las propiedades más importantes para evaluar la calidad del proceso de combustión de un combustible tipo diesel. El CN de biocombustibles derivados de aceites vegetales está influenciado por su composición de ácidos grasos. El objetivo de esta investigación es obtener dos modelos físico-matemáticos que establezcan una relación entre el número de cetano de biocombustibles derivados de aceites vegetales y su composición de ácidos grasos esenciales. Para predecir el CN se desarrollaron dos modelos mediante un análisis de regresión múltiple, basado en datos experimentales extraídos de bases de datos referenciadas. El ajuste de los coeficientes del modelo se basa en la obtención de residuales mínimos. Se realiza una validación parcial del modelo y se establecen las pautas para la validación total del mismo. A partir de estos resultados queda establecida una herramienta muy útil para la determinación del número de cetano. Palabras claves: número de cetano, biodiesel, aceites vegetales, ácidos grasos.______________________________________________________________________________ Abstract The cetane number is one of the main properties for characterization of the ignition quality of a fuel for its use in a diesel engine. The cetane number of biofuels obtained from different vegetable oils is strongly considerably by their fatty acid composition. The scope of this research is to obtain two physical-mathematical models that establish a relationship between the cetane number and the composition of different biofuels derived from vegetable oils. The models were developed using an analysis of multiple regression, based on experimental data available in the literature. The coefficients adjustment of the model was based on the obtaining of lower residual in the capacity of prediction of the model. A partial validation of the model was developed.  Starting from these results it a very useful tool for

  10. Omega-3 Fatty Acids EPA and DHA: Health Benefits Throughout Life12

    Swanson, Danielle; Block, Robert; Mousa, Shaker A.

    2012-01-01

    Omega-3 [(n-3)] fatty acids have been linked to healthy aging throughout life. Recently, fish-derived omega-3 fatty acids EPA and DHA have been associated with fetal development, cardiovascular function, and Alzheimer’s disease. However, because our bodies do not efficiently produce some omega-3 fatty acids from marine sources, it is necessary to obtain adequate amounts through fish and fish-oil products. Studies have shown that EPA and DHA are important for proper fetal development, includin...

  11. Association between Blood Omega-3 Index and Cognition in Typically Developing Dutch Adolescents

    van der Wurff, Inge S. M.; Clemens von Schacky; Kjetil Berge; Zeegers, Maurice P.; Kirschner, Paul A.; De Groot, Renate H. M.

    2016-01-01

    The impact of omega-3 long-chain polyunsaturated fatty acids (LCPUFAs) on cognition is heavily debated. In the current study, the possible association between omega-3 LCPUFAs in blood and cognitive performance of 266 typically developing adolescents aged 13–15 years is investigated. Baseline data from Food2Learn, a double-blind and randomized placebo controlled krill oil supplementation trial in typically developing adolescents, were used for the current study. The Omega-3 Index was determine...

  12. Positive association between blood Omega-3 index and cognition in healthy Dutch adolescents

    Van der Wurff, Inge; von Schacky, Clemens; Berge, Kjetil; Zeegers, Maurice P.; Kirschner, Paul A.; de Groot, Renate

    2016-01-01

    The impact of omega-3 long-chain polyunsaturated fatty acids (LCPUFAs) on cognition is heavily debated. In the current study, the possible association between omega-3 LCPUFAs in blood and cognitive performance of 266 typically developing adolescents aged 13–15 years is investigated. Baseline data from Food2Learn, a double-blind and randomized placebo controlled krill oil supplementation trial in typically developing adolescents, were used for the current study. The Omega-3 Index was determine...

  13. The importance of omega-3 fatty acids for behaviour, cognition and mood

    Richardson, Alexandra J.

    2003-01-01

    There is mounting evidence that functional deficiencies or imbalances in certain highly unsaturated fatty acids (HUFA) of the omega-3 and omega-6 series may contribute to a wide range of developmental and psychiatric conditions, including dyslexia, dyspraxia, attention deficit hyperactivity disorder (ADHD), autism, depression, bipolar disorder and the schizophrenia spectrum. These nutrients are essential to the development and function of the brain, but the omega-3 HUFA in particular (eicosap...

  14. OMEGA-3 FATTY ACIDS AND AGE-RELATED DISEASES: REALITIES AND PROSPECTS

    O. M. Drapkina

    2015-01-01

    Full Text Available Efficacy of omega-3 fatty acids in cardiology is so high that in many countries omega-3 fatty acids are included into the treatment protocols for patients with cardiovascular diseases. This therapeutic class slows down oxidative stress and chronic inflammation processes, thereby providing a significant contribution to the complex treatment of hypertension. Besides, omega-3 fatty acids slow down the aging process and prevent the development of age-related diseases affecting the rate of telomere shortening.

  15. Recent Advances in Omega-3: Health Benefits, Sources, Products and Bioavailability

    Nichols, Peter D.; Alexandra McManus; Kevin Krail; Andrew J. Sinclair; Matt Miller

    2014-01-01

    The joint symposium of The Omega-3 Centre and the Australasian Section American Oil Chemists Society; Recent Advances in Omega-3: Health Benefits, Sources, Products and Bioavailability, was held November 7, 2013 in Newcastle, NSW, Australia. Over 115 attendees received new information on a range of health benefits, aquaculture as a sustainable source of supply, and current and potential new and novel sources of these essential omega-3 long-chain (LC, ≥C20) polyunsaturated fatty acid nutrients...

  16. Analytical electron microscope study of the omega phase transformation in a zirconium-niobium alloy

    The study of the as-quenched omega phase morphology shows that the domain size of Zr-15% Nb is on the order of 30 A. No alignment of omega domains along β directions was observed and samples having undergone thermal cycling in thin foil form, did not develop a long-period structure of alternating β and ω phases below the omega transformation temperature

  17. Fish oil and omega-3 fatty acids in cardiovascular disease: do they really work?

    Kromhout, Daan; Yasuda, Satoshi; Geleijnse, Johanna M; Shimokawa, Hiroaki

    2011-01-01

    Omega-3 fatty acids, which are found abundantly in fish oil, exert pleiotropic cardiometabolic effects with a diverse range of actions. The results of previous studies raised a lot of interest in the role of fish oil and omega-3 fatty acids in primary and secondary prevention of cardiovascular diseases. The present review will focus on the current clinical uses of omega-3 fatty acids and provide an update on their effects. Since recently published trials in patients with coronary artery disea...

  18. Topological Complexity of Context-Free omega-Languages: A Survey

    Finkel, Olivier

    2008-01-01

    We survey recent results on the topological complexity of context-free omega-languages which form the second level of the Chomsky hierarchy of languages of infinite words. In particular, we consider the Borel hierarchy and the Wadge hierarchy of non-deterministic or deterministic context-free omega-languages. We study also decision problems, the links with the notions of ambiguity and of degrees of ambiguity, and the special case of omega-powers.

  19. Sintesis Lemak Margarin Dari Fraksi Minyak Sawit Yang Diperkaya Asam Lemak Omega-3 Secara Enzimatik

    Duma Fithriani

    2008-01-01

    Reaksi interesterifikasi pada lemak dan minyak akan menyebabkan pertukaran antara satu asam lemak dengan asam lemak yang lain didalam molekul trigliserida yang dapat mengubah sifat kimia dan fisika pada lemak. Dalam penelitian ini dilakukan pembuatan margarin yang diperkaya omega-3 melalui proses interesterifikasi antara fraksi-fraksi minyak sawit dengan konsentrat omega-3 yang menggunakan katalis dedak padi. Untuk mendapatkan margarin omega-3 yang baik dilakukan analisa kandungan lemak pa...

  20. Potential Benefits of Omega-3 Fatty Acids in Non-Melanoma Skin Cancer

    Homer S. Black

    2016-02-01

    Full Text Available Considerable circumstantial evidence has accrued from both experimental animal and human clinical studies that support a role for omega-3 fatty acids (FA in the prevention of non-melanoma skin cancer (NMSC. Direct evidence from animal studies has shown that omega-3 FA inhibit ultraviolet radiation (UVR induced carcinogenic expression. In contrast, increasing levels of dietary omega-6 FA increase UVR carcinogenic expression, with respect to a shorter tumor latent period and increased tumor multiplicity. Both omega-6 and omega-3 FA are essential FA, necessary for normal growth and maintenance of health and although these two classes of FA exhibit only minor structural differences, these differences cause them to act significantly differently in the body. Omega-6 and omega-3 FA, metabolized through the lipoxygenase (LOX and cyclooxygenase (COX pathways, lead to differential metabolites that are influential in inflammatory and immune responses involved in carcinogenesis. Clinical studies have shown that omega-3 FA ingestion protects against UVR-induced genotoxicity, raises the UVR-mediated erythema threshold, reduces the level of pro-inflammatory and immunosuppressive prostaglandin E2 (PGE2 in UVR-irradiated human skin, and appears to protect human skin from UVR-induced immune-suppression. Thus, there is considerable evidence that omega-3 FA supplementation might be beneficial in reducing the occurrence of NMSC, especially in those individuals who are at highest risk.

  1. Dietary Omega-3 Fatty Acid Deficiency and Visual Loss in Infant Rhesus Monkeys

    Neuringer, M.; Connor, W.E.; Van Petten, C; Barstad, L

    1984-01-01

    Linolenic acid (18:3 omega 3) is a dietary precursor of docosahexaenoic acid (22:6 omega 3), the major fatty acid in the photoreceptor membranes of the retina. We hypothesized that rhesus monkeys deprived of dietary omega-3 fatty acids during prenatal and postnatal development would show plasma depletion of these fatty acids and visual impairment. Semipurified diets low in omega-3 fatty acids were fed to one group of adult female rhesus monkeys throughout pregnancy and to their infants from b...

  2. A combination of omega-3 fatty acids, folic acid and B-group vitamins is superior at lowering homocysteine than omega-3 alone: A meta-analysis.

    Dawson, Samantha Loren; Bowe, Steven John; Crowe, Timothy Charles

    2016-06-01

    The aim of the study was to assess whether omega-3 polyunsaturated fatty acid supplementation alone or in combination with folic acid and B-group vitamins is effective in lowering homocysteine. The Medline Ovid, Embase and Cochrane databases were searched for randomized-controlled trial studies that intervened with omega-3 supplementation (with or without folic acid) and measured changes in homocysteine concentration. Studies were pooled using a random effects model for meta-analysis. Three different models were analyzed: all trials combined, omega-3 polyunsaturated fatty acid trials, and omega-3 polyunsaturated fatty acids with folic acid and B-group vitamin trials. Nineteen studies were included, consisting of 3267 participants completing 21 trials. Studies were heterogeneous; varying by dose, duration and participant health conditions. Across all trials, omega-3 supplementation was effective in lowering homocysteine by an average of 1.18μmol/L (95%CI: (-1.89, -0.48), P=.001). The average homocysteine-lowering effect was greater when omega-3 supplementation was combined with folic acid and B-group vitamins (-1.37μmol/L, 95%CI: (-2.38, -0.36), Pvitamins B6 and B12 may be more effective than omega-3 supplementation alone. PMID:27188895

  3. Síntesis de biodiésel mediante catálisis ácida heterogénea a partir de mezclas de aceite y ácidos grasos

    Bengoa Gorostiza, Paul

    2012-01-01

    La finalidad de este trabajo de fin de carrera ha sido el estudio de diferentes catalizadores ácidos heterogéneos como HPA, Ta2O5, MoO3, Nb2O5, ZrO2 y WO3 en la síntesis de biodiesel mediante la esterificación y transesterificación de una mezcla preparada con triglicéridos y ácidos grasos, para poder reducir en los costes de producción de biodiesel. Se ha partido de artículos científicos que informan sobre la obtención de biodiesel a partir de aceites usados, siendo el primer t...

  4. Características clínicas, bioquímicas y epidemiológicas de un grupo de pacientes con diagnóstico imaginológico de hígado graso

    Juan Carlos Restrepo

    2001-04-01

    Full Text Available En nuestro medio, la esteatosis o infiltración hepática grasa se
    convierte casi siempre en un hallazgo imaginológico incidental, al cual
    se la da muy poca importancia desde el punto de vista clínico, y por
    ende no se realizan estudios posteriores para determinar su causa, las condiciones asociadas que lo expliquen (1, y mucho menos se realiza biopsia hepática para determinar, cuáles de estos pacientes tienen esteatohepatitis, algún grado de fibrosis o incluso cirrosis. Este trabajo tuvo como objetivo describir las características epidemiológicas, clínicas y bioquímicas de un grupo de pacientes con diagnóstico imaginológico de hígado graso.

  5. Low omega-6 vs. low omega-6 plus high omega-3 dietary intervention for Chronic Daily Headache: Protocol for a randomized clinical trial

    Smith Sunyata

    2011-04-01

    Full Text Available Abstract Background Targeted analgesic dietary interventions are a promising strategy for alleviating pain and improving quality of life in patients with persistent pain syndromes, such as chronic daily headache (CDH. High intakes of the omega-6 (n-6 polyunsaturated fatty acids (PUFAs, linoleic acid (LA and arachidonic acid (AA may promote physical pain by increasing the abundance, and subsequent metabolism, of LA and AA in immune and nervous system tissues. Here we describe methodology for an ongoing randomized clinical trial comparing the metabolic and clinical effects of a low n-6, average n-3 PUFA diet, to the effects of a low n-6 plus high n-3 PUFA diet, in patients with CDH. Our primary aim is to determine if: A both diets reduce n-6 PUFAs in plasma and erythrocyte lipid pools, compared to baseline; and B the low n-6 plus high n-3 diet produces a greater decline in n-6 PUFAs, compared to the low n-6 diet alone. Secondary clinical outcomes include headache-specific quality-of-life, and headache frequency and intensity. Methods Adults meeting the International Classification of Headache Disorders criteria for CDH are included. After a 6-week baseline phase, participants are randomized to a low n-6 diet, or a low n-6 plus high n-3 diet, for 12 weeks. Foods meeting nutrient intake targets are provided for 2 meals and 2 snacks per day. A research dietitian provides intensive dietary counseling at 2-week intervals. Web-based intervention materials complement dietitian advice. Blood and clinical outcome data are collected every 4 weeks. Results Subject recruitment and retention has been excellent; 35 of 40 randomized participants completed the 12-week intervention. Preliminary blinded analysis of composite data from the first 20 participants found significant reductions in erythrocyte n-6 LA, AA and %n-6 in HUFA, and increases in n-3 EPA, DHA and the omega-3 index, indicating adherence. Trial Registration ClinicalTrials.gov (NCT01157208

  6. Final Report: Posttest Analysis of Omega II Optical Specimens

    Newlander, C D; Fisher, J H

    2007-01-30

    Preliminary posttest analyses have been completed on optical specimens exposed during the Omega II test series conducted on 14 July 2006. The Omega Facility, located at the Laboratory for Laser Energetics (LLE) at the University of Rochester was used to produce X-ray environments through the interaction of intense pulsed laser radiation upon germanium-loaded silica aerogels. The optical specimen testing was supported by GH Systems through experiment design, pre- and post-test analyses, specimen acquisition, and overall technical experience. The test specimens were fabricated and characterized by Surface Optics Corporation (SOC), San Diego, CA and were simple protected gold coatings on silica substrates. Six test specimens were exposed, five filtered with thin beryllium foil filters, and one unfiltered which was exposed directly to the raw environment. The experimental objectives were: (1) demonstrate that tests of optical specimens could be performed at the Omega facility; (2) evaluate the use and survivability of beryllium foil filters as a function of thickness; (3) obtain damage data on optical specimens which ranged from no damage to damage; (4) correlate existing thermal response models with the damage data; (5) evaluate the use of the direct raw environment upon the specimen response and the ability/desirability to conduct sensitive optical specimen tests using the raw environment; and (6) initiate the development of a protocol for performing optical coatings/mirror tests. This report documents the activities performed by GH Systems in evaluating and using the environments provided by LLNL, the PUFFTFT analyses performed using those environments, and the calculated results compared to the observed and measured posttest data.

  7. The OMEGA Gas Sampling System and Radiochemical Diagnostics for NIF

    Stoyer, Mark; Sangster, Craig; Hudson, Bryant; Lougheed, Ron; Freeman, Charlie; Schwartz, Brook-Eden; Olsen, Michele

    2000-10-01

    Radiochemical diagnostics for the National Ignition Facility (NIF) will address important issues such as shell rho-R, mix and charged particle production in ignition and near-ignition capsules. Development of key tools for these diagnostics has been progressing on NOVA and OMEGA laser systems. A limitation of the sample collection techniques currently being used is the solid angle for collection of post-shot debris, which is maximally about 1collections at NOVA. Because of the large standoff for NIF (5 m), the solid angle subtended would be expected to be much less without development of expandable foil collection schemes. Many reaction products from charged particle reactions are noble gases. A gas sampling system for obtaining radiochemical samples following OMEGA shots is currently being assembled at LLNL. Results of benchtop tests with such a system will be discussed. A primary goal is to demonstrate reproducible collection efficiencies for this new technical capability of near 100Secondary goals include measuring collection efficiencies for certain reaction processes and to test the collection scheme for other low energy reaction products. Should high collection efficiencies be demonstrated, test reactions of 18O(alpha,n)21Ne and 79Br(p,n)79Kr will be investigated at OMEGA as mix-diagnostics for NIF. Note that it may be possible to use the 18O or Br already in most capsules, circumventing some target development issues. The gas sampling system will be designed in such a way as to not preclude the addition of carrier gas to the target chamber following an experiment for "flushing" of other, perhaps non-gaseous, reaction products.

  8. Final Report: Posttest Analysis of Omega II Optical Specimens

    Preliminary posttest analyses have been completed on optical specimens exposed during the Omega II test series conducted on 14 July 2006. The Omega Facility, located at the Laboratory for Laser Energetics (LLE) at the University of Rochester was used to produce X-ray environments through the interaction of intense pulsed laser radiation upon germanium-loaded silica aerogels. The optical specimen testing was supported by GH Systems through experiment design, pre- and post-test analyses, specimen acquisition, and overall technical experience. The test specimens were fabricated and characterized by Surface Optics Corporation (SOC), San Diego, CA and were simple protected gold coatings on silica substrates. Six test specimens were exposed, five filtered with thin beryllium foil filters, and one unfiltered which was exposed directly to the raw environment. The experimental objectives were: (1) demonstrate that tests of optical specimens could be performed at the Omega facility; (2) evaluate the use and survivability of beryllium foil filters as a function of thickness; (3) obtain damage data on optical specimens which ranged from no damage to damage; (4) correlate existing thermal response models with the damage data; (5) evaluate the use of the direct raw environment upon the specimen response and the ability/desirability to conduct sensitive optical specimen tests using the raw environment; and (6) initiate the development of a protocol for performing optical coatings/mirror tests. This report documents the activities performed by GH Systems in evaluating and using the environments provided by LLNL, the PUFFTFT analyses performed using those environments, and the calculated results compared to the observed and measured posttest data

  9. The cryogenic target handling system for the OMEGA laser

    The next series of inertial fusion experiments will approach ignition conditions. To achieve sufficient power density to approach ignition conditions with reasonable laser power, these experiments call for cryogenic targets with a uniform condensed fuel layer and a smooth inner surface inside a thin spherical shell. To field such targets, General Atomics is designing and building the OMEGA Cryogenic Target System (OCTS) for the upgraded OMEGA laser at the University of Rochester's Laboratory for Laser Energetics (LLE). The OCTS contains subsystems that operate on targets to fill, freeze, transport, layer, characterize, position to laser confluence and expose them for laser illumination milliseconds before short time. The OCTS will fill targets with deuterium-tritium (DT) to densities of up to 0.031 mol/cm3. The pressure cell and rack that contains the filled targets is cooled to cryogenic temperatures in the fill system cryostat. The rack of targets is transferred cold by the cold transfer cryostat to the transfer station cryostat. The transfer station separates individual targets from the rack and inserts them into the moving cryostat. The moving cryostat transports a target out of the LLE tritium laboratory, layers the target and inserts the target into the center of the OMEGA target tank. Targets are characterized optically during a pause in the insertion. At shot time, the end of the cryostat is rapidly removed by high acceleration motors mounted in a port on the target tank directly opposite that used to insert the target. Prototypes of the target filling and cold transfer equipment have been built and operated with deuterium. Mounted targets were successfully field to densities of 0.026 mol/cm3. Cold transfer of high density targets into and out of the fill system with the cold transfer cryostat was also successfully carried out. (author)

  10. A digital controller for the Omega West Reactor

    A new nuclear reactor control system for the Omega West Reactor (OWR) has been designed to replace the aging and hard to maintain controller presently installed. The controller uses single board computers, digital and analog input and output modules, and stepping motor indexers installed on a standard bus (VME bus). The eight poison control rod drive motors are replaced with stepping motors. The control algorithm for the OWR was not changed in order to expedite approval for installation. This report presents the results of the development of the new control system. Included in the report are copies of some of the software that drives the new controller

  11. Compactification on the \\Omega-background and the AGT correspondence

    Yagi, Junya

    2012-01-01

    The six-dimensional (2,0) theory formulated in the \\Omega-background gives rise to two-dimensional effective degrees of freedom. By compactifying the theory on the circle fibers of two cigar-like manifolds, we find that a natural candidate for the effective theory is a chiral gauged WZW model. The symmetry algebra of the model contains a W-algebra, precisely of the type suggested by the AGT correspondence. We show that the W-algebra has the conjectured relations to the chiral ring and the Seiberg-Witten curve of the four-dimensional side of the correspondence.

  12. B to (rho/omega) gamma at BaBar

    Koeneke, Karsten; /SLAC

    2008-02-06

    This document describes the measurements of the branching fractions and isospin violations of the radiative electroweak penguin decays B {yields} ({rho}/{omega}){gamma} at the asymmetric-energy e{sup +}e{sup -} PEP-II collider with the BABAR detector. Together with the previously measured branching fractions of the decays B {yields} K*{gamma} the ratio of CKM-matrix elements |V{sub td}/V{sub ts}| are extracted and the length of the far side of the unitarity triangle is determined.

  13. Inertial Confinement Fusion with Tetrahedral Hohlraums at OMEGA

    Indirect-drive inertial confinement fusion will require for ignition a highly symmetric x-ray flux around the capsule. To this end, the open-quotes tetrahedral hohlraum,close quotes spherical in shape with four laser entrance holes located at the vertices of a tetrahedron, has been proposed. The first experimental test of this concept, using the OMEGA laser, is reported here. Drive symmetry was probed using capsule implosion symmetries, which varied qualitatively as expected with hohlraum dimensions. Modeling of the experiments gives time-averaged flux asymmetries as low as 1% rms over a 2.2-ns laser pulse. copyright 1999 The American Physical Society

  14. Exotic Meson Decay to $\\omega\\pi^{0}\\pi^{-}$

    Lu, M

    2004-01-01

    A partial-wave analysis of the mesons from the reaction $\\pi^{-}% p\\to\\pi^{+}\\pi^{-}\\pi^{-}\\pi^{0}\\pi^{0}p$ has been performed. The data show $b_{1}\\pi$ decay of the spin-exotic states $\\pi_{1}(1600)$ and \\ $\\pi_{1}(2000)$. Three isovector $2^{-+}$ states were seen in the $\\omega\\rho^{-}$ decay channel. In addition to the well known $\\pi_{2}(1670)$, signals were also observed for $\\pi_{2}(1880)$ and $\\pi_{2}(1970)$.

  15. The NIF x-ray spectrometer calibration campaign at Omega

    Pérez, F.; Kemp, G. E.; Barrios, M. A.; Pino, J.; Scott, H.; Ayers, S.; Chen, H.; Emig, J.; Colvin, J. D.; Fournier, K. B., E-mail: fournier2@llnl.gov [Lawrence Livermore National Laboratory, P. O. Box 808, Livermore, California 94551 (United States); Regan, S. P.; Bedzyk, M.; Shoup, M. J.; Agliata, A.; Yaakobi, B.; Marshall, F. J.; Hamilton, R. A. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Jaquez, J.; Farrell, M.; Nikroo, A. [General Atomics, P.O. Box 85608, San Diego, California 92186 (United States)

    2014-11-15

    The calibration campaign of the National Ignition Facility X-ray Spectrometer (NXS) was carried out at the OMEGA laser facility. Spherically symmetric, laser-driven, millimeter-scale x-ray sources of K-shell and L-shell emission from various mid-Z elements were designed for the 2–18 keV energy range of the NXS. The absolute spectral brightness was measured by two calibrated spectrometers. We compare the measured performance of the target design to radiation hydrodynamics simulations.

  16. Evaluación de un Extensor Graso sobre las Propiedades de Calidad del Chorizo Tipo Antioqueño Evaluation of a Fat Extender on the Quality Properties of Chorizo Antioqueño Type

    Waldir Augusto Pacheco Pérez

    2011-12-01

    Full Text Available Se estudió el efecto de un extensor de grasa elaborado con tocino dorsal de cerdo y una mezcla de alginato de sodio y carbonato de calcio, sobre las propiedades de calidad de un chorizo tipo Antioqueño, con el fin de desarrollar un producto reducido en grasa. Los chorizos elaborados con el extensor graso fueron comparados contra un chorizo formulado con tocino de cerdo. La composición proximal, contenido de colesterol, perfil de ácidos grasos, valor energético, pérdidas por cocción, pérdidas por purga, textura, color y atributos sensoriales fueron analizados en los productos obtenidos. Los datos reportados en cada una de las mediciones fueron analizados a través de análisis de varianza de una vía. Diferencias significativas (PThe effect of a fat extender elaborated with pork backfat and a mixture of sodium alginate and calcium carbonate on the quality properties of a chorizo Antioqueño type was studied, with the purpose of developing a product reduced in fat. The chorizos elaborated with the fat extender was compared against a chorizo elaborated with pork backfat. The proximal composition, content of cholesterol, profile of fatty acids, energy value, cooking loss, purge losses, texture, color and sensorial attributes were analyzed in the obtained products. The data reported in each of the measurements were analyzed by one way analysis of variance. Significant differences (P<0,05 were found in the content of fat and in the profile of fatty acids, in the texture properties, so much at instrumental level as sensory. Also in the sensory attributes such as appearance, odour, taste and fatty sensation, as well as a reduction in the energy value, while an increase in the cooking loss was observed.

  17. Low omega-3 index in pregnancy is a possible biological risk factor for postpartum depression.

    Maria Wik Markhus

    Full Text Available BACKGROUND: Depression is a common disorder affecting 10-15% women in the postpartum period. Postpartum depression can disrupt early mother-infant interaction, and constitutes a risk factor for early child development. Recently, attention has been drawn to the hypothesis that a low intake of seafood in pregnancy can be a risk factor for postpartum depression. Seafood is a unique dietary source of the marine omega-3 fatty acids and is a natural part of a healthy balanced diet that is especially important during pregnancy. METHODS: In a community based prospective cohort in a municipality in Western Norway, we investigated both nutritional and psychological risk factors for postpartum depression. The source population was all women who were pregnant within the period November 2009 - June 2011. The fatty acid status in red blood cells was assessed in the 28(th gestation week and participants were screened for postpartum depression using the Edinburgh Postnatal Depression Scale (EPDS three months after delivery. The aim of the present study was to investigate if a low omega-3 index in pregnancy is a possible risk factor for postpartum depression. RESULTS: In a simple regression model, the omega-3 index was associated with the EPDS score in a nonlinear inverse manner with an R square of 19. Thus, the low omega-3 index explained 19% of the variance in the EPDS score. The DPA content, DHA content, omega-3 index, omega-3/omega-6 ratio, total HUFA score, and the omega-3 HUFA score were all inversely correlated with the EPDS score. The EPDS scores of participants in the lowest omega-3 index quartile were significantly different to the three other omega-3 index quartiles. CONCLUSION: In this study population, a low omega-3 index in late pregnancy was associated with higher depression score three months postpartum.

  18. Influence of omega-3 fatty acid status on the way rats adapt to chronic restraint stress.

    Marie Hennebelle

    Full Text Available Omega-3 fatty acids are important for several neuronal and cognitive functions. Altered omega-3 fatty acid status has been implicated in reduced resistance to stress and mood disorders. We therefore evaluated the effects of repeated restraint stress (6 h/day for 21 days on adult rats fed omega-3 deficient, control or omega-3 enriched diets from conception. We measured body weight, plasma corticosterone and hippocampus glucocorticoid receptors and correlated these data with emotional and depression-like behaviour assessed by their open-field (OF activity, anxiety in the elevated-plus maze (EPM, the sucrose preference test and the startle response. We also determined their plasma and brain membrane lipid profiles by gas chromatography. Repeated restraint stress caused rats fed a control diet to lose weight. Their plasma corticosterone increased and they showed moderate behavioural changes, with increases only in grooming (OF test and entries into the open arms (EPM. Rats fed the omega-3 enriched diet had a lower stress-induced weight loss and plasma corticosterone peak, and reduced grooming. Rats chronically lacking omega-3 fatty acid exhibited an increased startle response, a stress-induced decrease in locomotor activity and exaggerated grooming. The brain omega-3 fatty acids increased as the dietary omega-3 fatty acids increased; diets containing preformed long-chain omega-3 fatty acid were better than diets containing the precursor alpha-linolenic acid. However, the restraint stress reduced the amounts of omega-3 incorporated. These data showed that the response to chronic restraint stress was modulated by the omega-3 fatty acid supply, a dietary deficiency was deleterious while enrichment protecting against stress.

  19. THE EFFECT OF OMEGA-3 FATTY ACID SUPPLEMENTATION ON THE INFLAMMATORY RESPONSE TO ECCENTRIC STRENGTH EXERCISE

    Kelly B. Jouris

    2011-09-01

    Full Text Available Omega-3 fatty acids (omega-3 have anti-inflammatory properties. However, it is not known if omega-3 supplementation attenuates exercise-induced inflammation. We tested the hypothesis that omega-3 supplementation reduces inflammation that is induced by eccentric arm curl exercise. Healthy adult men and women (n=11; 35 ± 10 y performed eccentric biceps curls on two occasions, once after 14d of dietary omega-3 restriction (control trial and again after 7d of 3,000 mg/d omega-3 supplementation (omega-3 trial. Before and 48 h after eccentric exercise, signs of inflammation was assessed by measuring soreness ratings, swelling (arm circumference and arm volume, and temperature (infrared skin sensor. Arm soreness increased (p < 0.0001 in response to eccentric exercise; the magnitude of increase in soreness was 15% less in the omega-3 trial (p = 0.004. Arm circumference increased after eccentric exercise in the control trial (p = 0.01 but not in the omega-3 trial (p = 0.15. However, there was no difference between trials (p = 0.45. Arm volume and skin temperature did not change in response to eccentric exercise in either trial. These findings suggest that omega-3 supplementation decreases soreness, as a marker of inflammation, after eccentric exercise. Based on these findings, omega-3 supplementation could provide benefits by minimizing post-exercise soreness and thereby facilitate exercise training in individuals ranging from athletes undergoing heavy conditioning to sedentary subjects or patients who are starting exercise programs or medical treatments such as physical therapy or cardiac rehabilitation

  20. Role of omega-3 polyunsaturated fatty acids for the treatment of patients with major depression disorder

    Ali Al Hussain

    2014-01-01

    Full Text Available A rising number of studies have raised questions regarding the association of mental illness in a particular mood disorders such as depression with low intake of omega-3 fatty acids. Given all the side-effects that traditional antidepressants put patients at risk for, omega-3 is certainly a better alternative that might improve depressive symptoms and patient′s compliance to treatment by removing the stigma of psychiatric drugs. This study critically reviewed 12 relevant studies from PubMed published between 1992 - 2013 in order to determine whether omega-3 supplements or diet rich in fish were likely to show affectivity in reducing depressive symptoms. Most of the studies showed clear association between omega-3 and reduced depressive symptoms. Studies support the adjunctive role of omega-3 and high fish consumption in reducing depression. Omega-3 fatty acids have also shown to be safe when used during pregnancy to prevent postpartum depression. Although some studies showed mixed results of positive findings, the use of omega-3 supplements could not be an absolute substitute of antidepressants due to limitation in their studies. Minority of the studies reviewed did not correlate omega-3 with the improvement of depressive symptoms for many reasons such as the healthy life-style of subjects, etc. Given the fact that depression has various causes, this puts the testing of omega-3 in a lot of bias due to several variables such as dose, formula, period administered as well as the candidates′ state of health. Further research is definitely warranted on a larger sample size with close follow-up using proper assessment tools. Omega-3 has shown to have minimal or no side-effects at all, which makes it important for mental health professional to at least ensure that patients diagnosed with depression have adequate amounts of omega-3 fatty acids whether by supplementation or in their daily diet.

  1. Omega-3市场机遇挑战并存%There are Opportunities and Challenges in Omega-3 Market

    谢锋

    2009-01-01

    美国著名的增长咨询公司弗若斯特沙利文(Frost & sullivan)公司发表研究报告,认为美国Omega-3脂肪酸市场正在经历高速的发展和快速的扩张。但在全球性的金融危机影响下,这一行业也不可避免的承受了一些压力。

  2. BPS States in the Duality Web of the Omega deformation

    Hellerman, Simeon; Reffert, Susanne

    2013-01-01

    In this note, we study different limits of an Omega-deformed (2,0) six-dimensional gauge theory realized in a M-theory fluxtrap background. Via a chain of dualities, we connect the Omega-deformed SYM to a new four-dimensional gauge theory which we refer to as the reciprocal gauge theory. This theory has several properties in common with Liouville field theory, such as its gauge coupling b^2 =\\epsilon_2 / \\epsilon_1, and its behavior under S-duality. Finally, we realize the BPS states on the SYM side of the AGT correspondence and follow them along the chain of dualities. In the fluxtrap frame, we are dealing with two distinct types of states localized in different radial positions, while in the reciprocal frame, we find single states carrying both charges localized in one place which appear to be perturbatively stable. Our microscopic picture of the small-b limit exhibits semiclassically BPS bound states, which are not visible at the level of the partition function.

  3. OMEGA APOLLO 11超霸腕表

    2009-01-01

    人类登月40周年之际,欧米茄推出了OMEGA APOLLO 11超霸限量腕表。OMEGA APOLLO 11超霸限量腕表搭载了当年的超霸专业月球表原型所使用的著名欧米茄1861型机芯。表壳和表链都采用精钢材质,表链得以进一步改进,配置了欧米茄专利链针系统。小秒针表盘上采用了徽章图案,由著名的阿波罗11号任务徽章演变而来:老鹰飞至月球表面,鹰爪抓有代表和平的橄榄枝;月球水平线之上,遥远的地球清晰可见。腕表的时针、分针和带有红色尖端的计时秒针覆有夜光涂层。

  4. First results from cryogenic target implosions on OMEGA

    Initial results from direct-drive spherical cryogenic target implosions on the 60-beam OMEGA laser system [T. R. Boehly, D. L. Brown, R. S. Craxton et al., Opt. Commun. 133, 495 (1997)] are presented. These experiments are part of the scientific base leading to direct-drive ignition implosions planned for the National Ignition Facility (NIF) [W. J. Hogan, E. I. Moses, B. E. Warner et al., Nucl. Fusion 41, 567 (2001)]. Polymer shells (1-mm diam with walls 2 to provide 100-μm-thick ice layers. The ice layers are smoothed by IR heating with 3.16-μm laser light and are characterized using shadowgraphy. The targets are imploded by a 1-ns square pulse with up to ∼24 kJ of 351-nm laser light at a beam-to-beam rms energy balance of rms=9 μm showed 30% of the 1-D predicted neutron yield. These initial results are encouraging for future cryogenic implosions on OMEGA and the NIF

  5. Ordered omega derivatives in (Zr3Al)-Nb alloys

    Various kinds of phase transformation, viz., spinodal decomposition, omega transformation, precipitation reactions and martensitic transformation can be induced in ternary (Zr3Al)-Nb alloys in conditions far removed from equilibrium. Transformation sequences in alloys containing 3% niobium are described and rationalized in terms of some basic tendencies such as phase separation and chemical ordering in the β (bcc) phase and displacive omega and β to α (hcp) transformations. Microstructures of rapidly solidified alloy showed a distribution of cuboidal (D88 phase) particles in the β matrix. The periodic arrangement of these particles along the β directions was indicative of a spinodal transformation which preceded their formation. The β → D88 transformation could be accomplished by the superimposition of three processes, namely, chemical ordering, lattice collapse akin to ω transformation and vacancy ordering. During isothermal aging the D88 phase transformed into the B82 phase. The observed lattice correspondence and transformation morphology suggested that the D88 to B82 structural change involved the replacement of structural vacancies in the former by zirconium atoms without any reconstitution of the lattice. The evolution of the equilibrium Zr3Al (L12 structure) phase during prolonged aging were also studied

  6. Design of the tritium scrubber system for Omega Upgrade

    The Omega Upgrade at the Laboratory for Laser Energetics will commence deuterium-tritium (DT) shots in 1995. Omega Upgrade utilizes a 350 nm, 30 kJ laser to energize DT filled targets contained within an evacuated target chamber (TC). Up to 10 DT shots per day are planned, 5 days a week, with each target containing 20 mCi of tritium. Cryopumps, used to achieve high vacuum in the TC and to collect unburnt gases following DT shots, are regenerated on a monthly basis. The Tritium Scrubber System (TSS) has been designed to capture tritium released from the cryopumps, vacuum pump exhaust streams, outgassing from internal surfaces, and in the event of target rupture. A large quantity of low activity gas needs to be processed by the system; the target chamber and diagnostic antechambers will be evacuated up to 8 and 2000 times each month, respectively. Modifications are required to the facility to enable the capture of tritiated species from exhaust streams before being released to the atmosphere. The targeted annual tritium emission for the facility is less than 10 mCi. The TSS utilizes zirconium alloy hydride beds and molecular sieve beds to detritiate exhaust streams prior to stacking to satisfy this stringent emission target. 8 refs., 3 figs., 1 tab

  7. Evaluación de la extracción del aceite de la Triportheus magdalenae y análisis del perfil lipídico del aceite crudo

    Denilson Padilla Cerpa

    2012-02-01

    Full Text Available Se evaluó el rendimiento en la extracción química del aceite de la especie íctica Arenca (Triportheus magdalenae mediante la aplicación previa de dos tipos de digestión (ácida y acido-alcohólica, a través de un diseño experimental de bloques completamente al azar (DBCA. La extracción del aceite fue realizada por el método químico soxhlet; (adaptado del método, 960.39-AOAC para carnes y el análisis del perfil lipídico del aceite crudo fue realizado por cromatografía Gaseosa, demostrando que los dos tipos de digestión aplicadas producen un aumento en el rendimiento de la extracción química del aceite, obteniéndose mayor rendimiento con la digestión ácida, según la Diferencia Media Significativa (DMS con una p<0,05. Se determinó que la T. magdalenae, presenta una cantidad de aceite crudo en promedio de 3,23%, predominado por ácidos grasos insaturados (AGI, en un 56,77%, con proporción en ácidos grasos esenciales de la serie Omega 3 (ω-3 y omega 6 (ω-6, entre los que sobresalen el Eicosapentaenoico (EPA, el Docosapentaenoico (DPA y el Linolénico para ω-3; el linoleíco y el araquidónico para ω-6. Los resultados obtenidos permiten considerar la especie estudiada como viable para la obtención de aceites, de características farmacéuticas y medicinales.

  8. Omega-3 free fatty acids for the treatment of severe hypertriglyceridemia

    Kastelein, John J P; Maki, Kevin C; Susekov, Andrey;

    2014-01-01

    Omega-3 fatty acids in free fatty acid form have enhanced bioavailability, and plasma levels are less influenced by food than for ethyl ester forms.......Omega-3 fatty acids in free fatty acid form have enhanced bioavailability, and plasma levels are less influenced by food than for ethyl ester forms....

  9. The key role of water in the heterogeneous permanganate oxidation of $\\omega$-hydroxy alkenes

    Baskaran, Sundarababu; Islam, Imadul; Vankar, Padma S; Chandrasekaran, Srinivasan

    1990-01-01

    Potassium permanganate–copper sulphate in dichloromethane in the presence of a catalytic amount of water effects a smooth oxidative cyclization of $\\omega$-hydroxy alkenes to $\\omega$-lactones in good yields with the net loss of one or more carbon atoms in the process.

  10. Omega-3 Fatty Acids for Autistic Spectrum Disorder: A Systematic Review

    Bent, Stephen; Bertoglio, Kiah; Hendren, Robert L.

    2009-01-01

    We conducted a systematic review to determine the safety and efficacy of omega-3 fatty acids for autistic spectrum disorder (ASD). Articles were identified by a search of MEDLINE, EMBASE, and the Cochrane Database using the terms autism or autistic and omega-3 fatty acids. The search identified 143 potential articles and six satisfied all…

  11. Paradoxical effect of omega-3 fatty acids on plasma lipoprotein profile in the Golden Syrian hamster

    The objective was to determine the effect of dietary omega-3 and omega-6 fatty acids, and cholesterol (C) loading or C depletion on plasma lipids and mRNA levels of genes associated with C metabolism. Hamsters were fed high safflower (SO) or fish (FO) oil diets (10% w/w) for 12 weeks, with 0.01% (-C...

  12. Stability of omega-3 LC-PUFA-rich photoautotrophic microalgal oils compared to commercially available omega-3 LC-PUFA oils

    Ryckebosch, E.; Bruneel, C.; Termote-Verhalle, R.; Lemahieu, C.; Muylaert, K.; Van Durme, J.; Goiris, K.; Foubert, I.

    2013-01-01

    Microalgae are the primary producers of omega-3 LC-PUFA, which are known for their health benefits. Their oil may thus be a potential alternative for fish oil. However, oxidative and hydrolytic stability of omega-3 LC-PUFA oils are important parameters. The purpose of this work was therefore to evaluate these parameters in oils from photoautotrophic microalgae (Isochrysis, Phaeodactylum, Nannochloropsis gaditana, and Nannochloropsis sp.) obtained with hexane/isopropanol (HI) and hexane (H) an...

  13. Uporabnost maščobnih kislin omega-3 pri obravnavi ran na koži: Effect of omega-3 fatty acids on skin wound healing:

    Langerholc, Tomaž; Pajnkihar, Majda; Vrbnjak, Dominika

    2015-01-01

    Introduction: The purpose of this article is to analyse the effect of omega-3 fatty acids on wound healing and to demonstrate their usefulness in the wound treatment. Methods: Databases PubMed, CINAHL, Medline and ScienceDirect were searched for the literature review and analysis. A search was performed with keywords in English: omega-3 fish oil, polyunsaturated fatty acid (PUFA), wound, wound healing, and Boolean operator AND. Experimental or randomized clinical studies published in English ...

  14. Dietary Vitamin E Is More Effective than Omega-3 and Omega-6 Fatty Acid for Improving The Kinematic Characteristics of Rat Sperm

    AliReza Alizadeh; Zeinab Taleb; Bita Ebrahimi; Vahid Esmaeili; Abdolhossein Shaverdi; Javad Nasr; Abolfazl Kheimeh; Reza Salman Yazdi

    2016-01-01

    Objective Although key roles for dietary vitamin E (VITE) and fatty acid (FA) in fertility have been confirmed, limited data are available on the effects of VITE alone, or a constant level of VITE supplemented by dietary omega-6 and omega-3 FAs in combination on male reproduction. Consequently in this paper, the effects of VITE, sunflower oil, fish oil and their combination on rat sperm were investigated. Materials and Methods We divided 50 mature male Wistar rats into 5 groups (n...

  15. The role of $f_0(1710)$ in the $\\phi \\omega$ threshold peak of $J/\\Psi \\to \\gamma \\phi \\omega$

    Torres, A Martínez; Navarra, F S; Nielsen, M; Oset, E

    2013-01-01

    We study the process $J/\\Psi \\to \\gamma \\phi \\omega$, measured by the BES experiment, where a neat peak close to the $\\phi \\omega$ threshold is observed and is associated to a scalar meson resonance around 1800 MeV. We make the observation that a scalar resonance coupling to $\\phi \\omega$ unavoidably couples strongly to $K \\bar K$, but no trace of a peak is seen in the $K \\bar K$ spectrum of the $J/\\Psi \\to \\gamma K \\bar K$. This, reinforced by the negative results from a devoted Belle experiment in a related reaction, serves us to rule out the interpretation of the observed peak as a signal of a new resonance. After this is done, a thorough study is done on the production of a pair of vector mesons and how its unavoidable interaction leads necessarily to a peak in the $J/\\Psi \\to \\gamma \\phi \\omega$ reaction close to the $\\phi \\omega$ threshold, due to the dynamical generation of the $f_0(1710)$ resonance by the vector-vector interaction. We then show that both the shape obtained for the $\\phi \\omega$ mass d...

  16. Observation of the Omega(b)- Baryon and Measurement of the Properties of the Xi(b)- and Omega(b)- Baryons

    Aaltonen, T.; /Helsinki Inst. of Phys.; Adelman, Jahred A.; /Chicago U., EFI; Akimoto, T.; /Tsukuba U.; Alvarez Gonzalez, B.; /Cantabria Inst. of Phys.; Amerio, S.; /INFN, Padua; Amidei, Dante E.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, Alberto; /Frascati; Antos, Jaroslav; /Comenius U.; Apollinari, G.; /Fermilab; Apresyan, A.; /Purdue U. /Waseda U.

    2009-05-01

    The authors report the observation of the bottom, doubly-strange baryon {Omega}{sub b}{sup -} through the decay chain {Omega}{sub b}{sup -} {yields} J/{psi}{Omega}{sup -}, where J/{psi} {yields} {mu}{sup +} {mu}{sup -}, {Omega}{sup -} {yields} {Lambda}K{sup -}, and {Lambda} {yields} p {pi}{sup -}, using 4.2 fb{sup -1} of data from p{bar p} collisions at {radical}s = 1.96 TeV, and recorded with the Collider Detector at Fermilab. A signal is observed whose probability of arising from a background fluctuation is 4.0 x 10{sup -8}, or 5.5 Gaussian standard deviations. The {Omega}{sub b}{sup -} mass is measured to be 6054.4 {+-} 6.8(stat.) {+-} 0.9(syst.) MeV/c{sup 2}. The lifetime of the {Omega}{sub b}{sup -} baryon is measured to be 1.13{sub -0.40}{sup +0.53}(stat.) {+-} 0.02(syst.) ps. In addition, for the {Xi}{sub b}{sup -} baryon they measure a mass of 5790.9 {+-} 2.6(stat.) {+-} 0.8(syst.) MeV/c{sup 2} and a lifetime of 1.56{sub -0.25}{sup +0.27}(stat.) {+-} 0.02(syst.) ps.

  17. Stability and Stabilization of Omega-3 Oils as such and in Selected Foods

    Jacobsen, Charlotte

    The application of omega-3 polyunsaturated fatty acids (PUFA) in foods has increased dramatically during the last decade due to the increasing awareness about the health beneficial effects of these fatty acids. Due to their polyunsaturated nature omega-3 PUFA are highly susceptible to lipid...... oxidation, which will lead to formation of undesirable fishy and rancid off-flavours. Such off-flavours can lead to consumer rejection of omega-3 enriched foods. Important issues to address in order to avoid lipid oxidation are 1) processing conditions and product composition, 2) omega-3 PUFA source and...... delivery system, and 3) addition of antioxidants. This presentation will summarize our current knowledge about these issues in a range of different omega-3 enriched foods....

  18. Enrichment of foods with omega-3 fatty acids: A multidisciplinary challenge

    Jacobsen, Charlotte

    2010-01-01

    Enrichment of foods with marine omega-3 polyunsaturated fatty acids (PUFA) poses a multidisciplinary challenge to food industry and academia. Although our knowledge about possible health effects of omega-3 PUFA has increased tremendously during the last 30 years, there is still a lot to be learned...... about these healthy fatty acids. Moreover, consumer acceptance and lipid oxidation of omega-3 PUFA-enriched food are other major challenges that the food industry meet when developing omega-3-enriched foods. Two examples on multidisciplinary research projects to overcome some of these challenges are...... given in this article together with cases studies illustrating how lipid oxidation can be prevented in a range of different omega-3-enriched foods....

  19. Omega-6脂肪酸也是健康的

    肖印菁

    2009-01-01

    @@ Omega(Ω),是希腊字母表的最后一个字母,通常用于标示结尾或终点.然而,当应用于膳食脂肪,Omega则是健康的开始.两个不饱和脂肪酸家族,Omega-3和Omega-6脂肪酸,都是对心脏以及其他部位都有好处的.Omega-3和Omega-6没有什么神秘的意义,它只是描述了化学结构中的原子碳-碳双键在脂肪链骨架上的位置.这影响了脂肪分子的形状,而反过来,形状就影响了它在人体内的功能.

  20. Results of test of acid fluids neutralization in the well H-43, Los Humeros geothermal field, Puebla; Resultados de la prueba de neutralizacion de fluidos acidos en el pozo H-43, campo geotermico de Los Humeros, Puebla

    Flores Armenta, Magaly del Carmen; Ramirez Montes, Miguel; Sandoval Medina, Fernando; Rosales Lopez, Cesar [Comision Federal de Electricidad, Gerencia de Proyectos Geotermoelectricos, Morelia, Michoacan (Mexico)]. E-mail: magaly.flores@cfe.gob.mx

    2011-07-15

    The well H-43 was drilled in Los Humeros Geothermal Field, Pue., in 2007 and 2008. When well production was measured, it was found the well produced acid fluids with high corrosion potential. Then it was decided to try to neutralize the acidity of the H-43 fluids by adding a solution of sodium hydroxide. This is a basic substance used to neutralize mainly the acid groups H+, and the goal was to raise the pH of the fluids to minimize its corrosive features. First sodium hydroxide was injected into the well to protect the casing of 244.4 mm (9 5/8 in) against corrosion and then all the surface installations. It was possible to increase the pH of the well fluid from 5.2 up to 6.8 without altering the steam production, thus demonstrating the neutralization procedure is feasible. The approximate costs of the neutralization tests performed, including equipment for the proposed neutralization system, the neutralizer (NaOH), and drilling the well are about 71.4 million pesos (around 5.5 million USD). We estimate a benefit/cost ratio of 1.5 and a return on investment in five years, considering the income from energy sales at present value. [Spanish] El pozo H-43 fue perforado en el campo de Los Humeros, Pue., en 2007-2008, y al evaluar su produccion se encontro que producia fluidos acidos de alto potencial corrosivo. Se decidio por tanto realizar una prueba para neutralizar la acidez de los fluidos de este pozo, que consistio en agregarle una solucion de hidroxido de sodio. Esta es una sustancia basica que neutraliza principalmente los grupos acidos H+, con lo que se buscaba aumentar el pH del fluido lo necesario para reducir al maximo su caracter corrosivo. La inyeccion del hidroxido de sodio se realizo dentro del pozo a fin de proteger de la corrosion a la tuberia de revestimiento de 244.4 mm (9 5/8 pulgadas), y posteriormente a todos los equipos superficiales. Como resultado de la prueba, se logro aumentar el pH del fluido producido por el pozo de 5.2 a un maximo de 6

  1. The subgiant branch of omega Cen seen through high-resolution spectroscopy. I. The first stellar generation in omega Centauri?

    Pancino, E; Sbordone, L; Bellazzini, M; Pasquini, L; Monaco, L; Ferraro, F R

    2010-01-01

    We analysed high-resolution UVES spectra of six stars belonging to the subgiant branch of omega Centauri, and derived abundance ratios of 19 chemical elements (namely Al, Ba, C, Ca, Co, Cr, Cu, Fe, La, Mg, Mn, N, Na, Ni, Sc, Si, Sr, Ti, and Y). A comparison with previous abundance determinations for red giants provided remarkable agreement and allowed us to identify the sub-populations to which our targets belong. We found that three targets belong to a low-metallicity population at [Fe/H]~-2.0 dex, [alpha/Fe]~+0.4 dex and [s/Fe]~0 dex. Stars with similar characteristics were found in small amounts by past surveys of red giants. We discuss the possibility that they belong to a separate sub-population that we name VMP (very metal-poor, at most 5% of the total cluster population), which - in the self-enrichment hypothesis - is the best-candidate first stellar generation in omega Cen. Two of the remaining targets belong to the dominant metal-poor population (MP) at [Fe/H]~-1.7 dex, and the last one to the metal-...

  2. Structural properties of s-Cepheid velocity curves. Constraining the location of the omega4=2omega1 resonance

    Kienzle-Focacci, M N; Bersier, D F; Pont, F

    1999-01-01

    The light curves of the first overtone classical Cepheids show a discontinuity in their phi_21 vs. P diagram, near P=3.2 days. This feature, commonly attributed to the 2:1 resonance with the fourth overtone, is not reproduced by the hydrodynamical models. With the goal of reexamining the resonance hypothesis, we have obtained new CORAVEL radial velocity curves for 13 s-Cepheids. Together with 11 objects of Krzyt et al.(1998), the combined sample covers the whole range of s-Cepheid periods. The velocity Fourier parameters display a strong characteristic resonant behavior. In striking contrast to photometric ones, they vary smoothly with the pulsation period and show no jump at 3.2 days. The existing radiative hydrodynamical models match the velocity parameters very well. The center of the omega_4 = 2 omega_1 resonance is estimated to occur at P_r = 4.58+-0.04 days, i.e. at a considerable longer period than previously assumed. We identify two new members of the s-Cepheid group: MY Pup and V440 Per.

  3. Beneficial Effects of Omega-3 Polyunsaturated Fatty Acids in Gestational Diabetes: Consequences in Macrosomia and Adulthood Obesity

    Akadiri Yessoufou; Nekoua, Magloire P.; Adam Gbankoto; Yohana Mashalla; Kabirou Moutairou

    2015-01-01

    Omega-3 polyunsaturated fatty acids (PUFAs) are increasingly being used to prevent cardiovascular diseases, including diabetes and obesity. In this paper, we report data on the observed effects of omega-3 PUFA on major metabolic disorders and immune system disruption during gestational diabetes and their consequences on macrosomia. While controversies still exist about omega-3 PUFA effects on antioxidant status regarding the level of omega-3 PUFA in diet supplementation, their lipid-lowering ...

  4. Determinación de los ácidos grasos de alto y muy alto peso molecular que componen el D003 (C24:0-C36:0 en tabletas recubiertas con dosis de 5 mg a través de un método rápido de metilación que emplea la cromatografía de gases

    Méndez Antolín, Ernesto J.; Marrero Delange, David; González Canavaciolo, Víctor L.

    2008-01-01

    Fue validada una metodología rápida para determinar 5 mg de D003 (ingrediente activo que consiste en una mezcla de ácidos grasos de alto y muy alto peso molecular, desde el C24:0 hasta el C36:0 , con efectos antioxidantes, antiosteoporóticos, antiagragante plaquetario e hipocolesterolémico) en tabletas recubiertas empleando la Cromatografía de Gases (CG). Esta metodología aplicó primeramente una extracción de los ácidos grasos presentes en las tabletas usando cloroformo caliente, después invo...

  5. Recent advances in omega-3: Health Benefits, Sources, Products and Bioavailability.

    Nichols, Peter D; McManus, Alexandra; Krail, Kevin; Sinclair, Andrew J; Miller, Matt

    2014-09-01

    The joint symposium of The Omega-3 Centre and the Australasian Section American Oil Chemists Society; Recent Advances in Omega-3: Health Benefits, Sources, Products and Bioavailability, was held November 7, 2013 in Newcastle, NSW, Australia. Over 115 attendees received new information on a range of health benefits, aquaculture as a sustainable source of supply, and current and potential new and novel sources of these essential omega-3 long-chain (LC, ≥ C20) polyunsaturated fatty acid nutrients (also termed LC omega-3). The theme of "Food versus Fuel" was an inspired way to present a vast array of emerging and ground breaking Omega-3 research that has application across many disciplines. Eleven papers submitted following from the Omega-3 Symposium are published in this Special Issue volume, with topics covered including: an update on the use of the Omega-3 Index (O3I), the effects of dosage and concurrent intake of vitamins/minerals on omega-3 incorporation into red blood cells, the possible use of the O3I as a measure of risk for adiposity, the need for and progress with new land plant sources of docosahexaenoic acid (DHA, 22:6ω3), the current status of farmed Australian and New Zealand fish, and also supplements, in terms of their LC omega-3 and persistent organic pollutants (POP) content, progress with cheap carbon sources in the culture of DHA-producing single cell organisms, a detailed examination of the lipids of the New Zealand Greenshell mussel, and a pilot investigation of the purification of New Zealand hoki liver oil by short path distillation. The selection of papers in this Special Issue collectively highlights a range of forward looking and also new and including positive scientific outcomes occurring in the omega-3 field. PMID:25255830

  6. Recent Advances in Omega-3: Health Benefits, Sources, Products and Bioavailability

    Peter D. Nichols

    2014-09-01

    Full Text Available The joint symposium of The Omega-3 Centre and the Australasian Section American Oil Chemists Society; Recent Advances in Omega-3: Health Benefits, Sources, Products and Bioavailability, was held November 7, 2013 in Newcastle, NSW, Australia. Over 115 attendees received new information on a range of health benefits, aquaculture as a sustainable source of supply, and current and potential new and novel sources of these essential omega-3 long-chain (LC, ≥C20 polyunsaturated fatty acid nutrients (also termed LC omega-3. The theme of “Food versus Fuel” was an inspired way to present a vast array of emerging and ground breaking Omega-3 research that has application across many disciplines. Eleven papers submitted following from the Omega-3 Symposium are published in this Special Issue volume, with topics covered including: an update on the use of the Omega-3 Index (O3I, the effects of dosage and concurrent intake of vitamins/minerals on omega-3 incorporation into red blood cells, the possible use of the O3I as a measure of risk for adiposity, the need for and progress with new land plant sources of docosahexaenoic acid (DHA, 22:6ω3, the current status of farmed Australian and New Zealand fish, and also supplements, in terms of their LC omega-3 and persistent organic pollutants (POP content, progress with cheap carbon sources in the culture of DHA-producing single cell organisms, a detailed examination of the lipids of the New Zealand Greenshell mussel, and a pilot investigation of the purification of New Zealand hoki liver oil by short path distillation. The selection of papers in this Special Issue collectively highlights a range of forward looking and also new and including positive scientific outcomes occurring in the omega-3 field.

  7. Omega-3 Fatty Acid Content in Various Tissues of Different Persian Gulf Fish

    MJ Zibaee Nezhad

    2008-11-01

    Full Text Available Background: The fatty acids of omega-3 family have high nutritional value and can prevent coronary heart disease.These fatty acids are found in various fish and sea foods. To investigate the level of omega-3 fatty acids indifferent kind of fish head, muscle and liver from 30 species of fish collected from Persian Gulf.Material and Methods: In this experimental study, the fish were collected by hunting from Boushehr and Hormozgansea ports. Their head, muscle and liver fatty acids were determined on their methylated fatty acids dissolvedin N-hexin. Quantitative analysis of fatty acids was performed by gas chromatography (GC with methylmyristateused as the reference material in this analysis and the qualitative analysis of fatty acids was done bygas chromatography and mass spectrometer (GC- mass and cod liver oil which contained all of omega-3 fattyacids used as standard.Results: Our study showed that some fish were good sources of omega-3 fatty acids and Trout (Ghezel-ALA,Bartail flathead (Zaminkan-e-domnavari, Malabar blood snapper (Sorkhoo malabari had maximum levels ofomega-3 in all body tissues. Other types of fish were rich in omega 3 fatty acids in separate organs, such as liverin Bartail flathead (Zaminkan-e-domnavari, head in Sillago Sihama (Shoort and muscle in Trout (Ghezel-ALA. In contrast, lesser amount of omega 3 fatty acids is found in tissues of other species of fish such as Silverpomfret (Halva sefid, Longfin trevally (Gish-e-derazbale and Xiphophorus Hellerii (Dom-shamshiri.Conclusion: This research showed that the liver of fish had the highest level of omega-3 fatty acids and fish musclecontained more omega-3 fatty acids than the head. Thus for having maximum levels of omega-3 fatty acids inthe diet, all fish tissues can be served. As liver and head of fish are not usually consumed, it is recommended thatsuch organs be used for preparation of omega 3-containing cardio supportive supplements.

  8. LHCb: Measurement of the $\\Lambda_b^0$, $\\Xi_b^-$ and $\\Omega_b^-$ baryon masses

    Märki, R

    2013-01-01

    Mass measurements of $\\Lambda_b^0$, $\\Xi_b^-$ and $\\Omega_b^-$ at LHCb using 1~fb$^{-1}$ of data collected in 2011, reconstructing $\\Lambda_b^0 \\rightarrow J/\\psi \\Lambda$, $\\Xi_b^- \\rightarrow J/\\psi \\Xi^-$ and $\\Omega_b^- \\rightarrow J/\\psi \\Omega^-$.

  9. Influencia de diferentes cepas probióticas y el tiempo de fermentación en el contenido de ácido linoléico conjugado y el perfil de ácidos grasos durante el almacenamiento del kumis elaborado con dos sustratos diferentes

    Osorio García, Julian Adolfo

    2010-01-01

    El ácido linoléico conjugado (ALC) es un grupo de ácidos grasos esenciales de gran interés en los últimos años, debido a los numerosos efectos benéficos sobre la salud humana. El ALC se encuentra principalmente en la leche y derivados lácteos, y se ha planteado que podría incrementarse durante la fermentación láctea por esto se planteó desarrollar una bebida láctea fermentada con alto contenido de este ácido graso. Este estudio fue realizado en el Instituto de Ciencia y Tecnología de Alimento...

  10. Efecto de la administración de triglicéridos de cadena media y ácidos grasos poliinsaturados ω-3 en la prevención y tratamiento de la fibrosis hepática en un modelo murino (ratones C57BL/6) de esteatohepatitis no alcohólica

    Milke García, María del Pilar

    2008-01-01

    En la enfermedad por hígado graso no alcohólico (NAFLD), la alteración en el metabolismo de lípidos, estrés oxidativo y alteración en la producción de citocinas en un hígado graso causan inflamación y fibrosis hepáticas.La obesidad y diabetes se asocian a cambios histológicos desde esteatosis simple hasta necroinflamación y fibrosis (esteatohepatitis no alcohólica o NASH), una de las manifestaciones de NAFLD. La NASH es precursora de cirrosis. La prevalencia de NAFLD y NASH es de 20 y 2-3%,...

  11. Efecto de la administración de triglicéridos de cadena media y ácidos grasos poliinsaturados ω-3 en la prevención y tratamiento de la fibrosis hepática en un modelo murino (ratones C57BL/6) de esteatohepatitis no alcohólica

    Milke García, María del Pilar

    2009-01-01

    Consultable des del TDX Títol obtingut de la portada digitalitzada En la enfermedad por hígado graso no alcohólico (NAFLD), la alteración en el metabolismo de lípidos, estrés oxidativo y alteración en la producción de citocinas en un hígado graso causan inflamación y fibrosis hepáticas. La obesidad y diabetes se asocian a cambios histológicos desde esteatosis simple hasta necroinflamación y fibrosis (esteatohepatitis no alcohólica o NASH), una de las manifestaciones de NAFLD. La NASH e...

  12. Marine Omega-3 Phospholipids: Metabolism and Biological Activities

    Nils Hoem

    2012-11-01

    Full Text Available The biological activities of omega-3 fatty acids (n-3 FAs have been under extensive study for several decades. However, not much attention has been paid to differences of dietary forms, such as triglycerides (TGs versus ethyl esters or phospholipids (PLs. New innovative marine raw materials, like krill and fish by-products, present n-3 FAs mainly in the PL form. With their increasing availability, new evidence has emerged on n-3 PL biological activities and differences to n-3 TGs. In this review, we describe the recently discovered nutritional properties of n-3 PLs on different parameters of metabolic syndrome and highlight their different metabolic bioavailability in comparison to other dietary forms of n-3 FAs.

  13. A ring image Cerenkov detector for the CERN Omega Spectrometer

    A development program has been undertaken to produce a large ring image Cerenkov detector (RICH) for use at the CERN Omega Spectrometer. A prototype Cerenkov counter has been constructed and successfully operated in a high energy particle beam, Cerenkov rings having been observed in an experimental time projection chamber (TPC) using the photoionising agents Triethylamine (TEA) and Tetrakis (dimethylamine) ethylene (TMAE). Systematic measurements have been made of the optical properties of window materials and reflecting surfaces in the vacuum ultraviolet region. Results of these tests are presented, and the design of the large detector based on these experiences together with Monte Carlo simulations of the events expected in the WA69 experiment, is discussed. (author)

  14. Lipid oxidation in omega-3 emulsions prepared with milk proteins

    Horn, Anna Frisenfeldt; Nielsen, Nina Skall; Andersen, Ulf;

    An increasing body of evidence supports the health beneficial effects of omega-3 polyunsaturated fatty acids. Therefore, incorporation of marine oils into foods has also gained an increasing interest. However, the highly unsaturated lipids present in marine oils are prone to lipid oxidation, and...... their addition to foods is therefore limited by the development of unpleasant off-flavors. Hence, efficient strategies are necessary to protect the lipids and thereby make fish oil-enriched food products successful in the marketplace. In an attempt to increase the oxidative stability of fish oil...... oxidatively stable product. Thus, a better understanding of factors influencing lipid oxidation in delivery emulsions themselves is therefore needed to understand the differences observed between food systems. In oil-in-water emulsions, lipid oxidation is expected to be initiated at the oil-water interface...

  15. Towards sustainable sources for omega-3 fatty acids production.

    Adarme-Vega, T Catalina; Thomas-Hall, Skye R; Schenk, Peer M

    2014-04-01

    Omega-3 fatty acids eicosapentaenoic acid (EPA) and docohexaenoic acid (DHA), provide significant health benefits for brain function/development and cardiovascular conditions. However, most EPA and DHA for human consumption is sourced from small fatty fish caught in coastal waters and, with depleting global fish stocks, recent research has been directed towards more sustainable sources. These include aquaculture with plant-based feeds, krill, marine microalgae, microalgae-like protists and genetically-modified plants. To meet the increasing demand for EPA and DHA, further developments are needed towards land-based sources. In particular large-scale cultivation of microalgae and plants is likely to become a reality with expected reductions in production costs, yield increasese and the adequate addressing of genetically modified food acceptance issues. PMID:24607804

  16. Omega-3 Fatty Acids and Depression: Scientific Evidence and Biological Mechanisms

    Giuseppe Grosso

    2014-01-01

    Full Text Available The changing of omega-6/omega-3 polyunsaturated fatty acids (PUFA in the food supply of Western societies occurred over the last 150 years is thought to promote the pathogenesis of many inflammatory-related diseases, including depressive disorders. Several epidemiological studies reported a significant inverse correlation between intake of oily fish and depression or bipolar disorders. Studies conducted specifically on the association between omega-3 intake and depression reported contrasting results, suggesting that the preventive role of omega-3 PUFA may depend also on other factors, such as overall diet quality and the social environment. Accordingly, tertiary prevention with omega-3 PUFA supplement in depressed patients has reached greater effectiveness during the last recent years, although definitive statements on their use in depression therapy cannot be yet freely asserted. Among the biological properties of omega-3 PUFA, their anti-inflammatory effects and their important role on the structural changing of the brain should be taken into account to better understand the possible pathway through which they can be effective both in preventing or treating depression. However, the problem of how to correct the inadequate supply of omega-3 PUFA in the Westernized countries’ diet is a priority in order to set food and health policies and also dietary recommendations for individuals and population groups.

  17. Association between Blood Omega-3 Index and Cognition in Typically Developing Dutch Adolescents

    Inge S. M. van der Wurff

    2016-01-01

    Full Text Available The impact of omega-3 long-chain polyunsaturated fatty acids (LCPUFAs on cognition is heavily debated. In the current study, the possible association between omega-3 LCPUFAs in blood and cognitive performance of 266 typically developing adolescents aged 13–15 years is investigated. Baseline data from Food2Learn, a double-blind and randomized placebo controlled krill oil supplementation trial in typically developing adolescents, were used for the current study. The Omega-3 Index was determined with blood from a finger prick. At baseline, participants finished a neuropsychological test battery consisting of the Letter Digit Substitution Test (LDST, D2 test of attention, Digit Span Forward and Backward, Concept Shifting Test and Stroop test. Data were analyzed with multiple regression analyses with correction for covariates. The average Omega-3 Index was 3.83% (SD 0.60. Regression analyses between the Omega-3 Index and the outcome parameters revealed significant associations with scores on two of the nine parameters. The association between the Omega-3 Index and both scores on the LDST (β = 0.136 and p = 0.039, and the number of errors of omission on the D2 (β = −0.053 and p = 0.007. This is a possible indication for a higher information processing speed and less impulsivity in those with a higher Omega-3 Index.

  18. Association between Blood Omega-3 Index and Cognition in Typically Developing Dutch Adolescents.

    van der Wurff, Inge S M; von Schacky, Clemens; Berge, Kjetil; Zeegers, Maurice P; Kirschner, Paul A; de Groot, Renate H M

    2016-01-01

    The impact of omega-3 long-chain polyunsaturated fatty acids (LCPUFAs) on cognition is heavily debated. In the current study, the possible association between omega-3 LCPUFAs in blood and cognitive performance of 266 typically developing adolescents aged 13-15 years is investigated. Baseline data from Food2Learn, a double-blind and randomized placebo controlled krill oil supplementation trial in typically developing adolescents, were used for the current study. The Omega-3 Index was determined with blood from a finger prick. At baseline, participants finished a neuropsychological test battery consisting of the Letter Digit Substitution Test (LDST), D2 test of attention, Digit Span Forward and Backward, Concept Shifting Test and Stroop test. Data were analyzed with multiple regression analyses with correction for covariates. The average Omega-3 Index was 3.83% (SD 0.60). Regression analyses between the Omega-3 Index and the outcome parameters revealed significant associations with scores on two of the nine parameters. The association between the Omega-3 Index and both scores on the LDST (β = 0.136 and p = 0.039), and the number of errors of omission on the D2 (β = -0.053 and p = 0.007). This is a possible indication for a higher information processing speed and less impulsivity in those with a higher Omega-3 Index. PMID:26729157

  19. The Role for Dietary Omega-3 Fatty Acids Supplementation in Older Adults

    Alessio Molfino

    2014-10-01

    Full Text Available Optimal nutrition is one of the most important determinants of healthier ageing, reducing the risk of disability, maintaining mental and physical functions, and thus preserving and ensuring a better quality of life. Dietary intake and nutrient absorption decline with age, thus increasing the risk of malnutrition, morbidity and mortality. Specific nutrients, particularly long-chain omega-3 polyunsaturated fatty acids (PUFAs, might have the potential of preventing and reducing co-morbidities in older adults. Omega-3 PUFAs are able to modulate inflammation, hyperlipidemia, platelet aggregation, and hypertension. Different mechanisms contribute to these effects, including conditioning cell membrane function and composition, eicosanoid production, and gene expression. The present review analyzes the influence of omega-3 PUFAs status and intake on brain function, cardiovascular system, immune function, muscle performance and bone health in older adults. Omega-3 FAs may have substantial benefits in reducing the risk of cognitive decline in older people. The available data encourage higher intakes of omega-3 PUFAs in the diet or via specific supplements. More studies are needed to confirm the role of omega-3 FAs in maintaining bone health and preventing the loss of muscle mass and function associated with ageing. In summary, omega-3 PUFAs are now identified as potential key nutrients, safe and effective in the treatment and prevention of several negative consequences of ageing.

  20. Paleolimnological studies of Laguna Chica of San Pedro (VIII Region: Diatoms, hydrocarbons and fatty acid records Estudio Paleolimnológico de Laguna Chica de San Pedro (VIII Región: Diatomeas, hidrocarburos y ácidos grasos

    ROBERTO URRUTIA

    2000-12-01

    Full Text Available Diatom, hydrocarbons and fatty acid sedimentary records were used for reconstructing the recent (last 150 years palaeolimnological history of Laguna Chica of San Pedro (Concepción, VIII Región, Chile. Cluster analyses (Constrained Incremental Sum of Squares on the diatom data revealed three distinct periods. The first period (1883-1940's showed a pronounced increase in sedimentation rate and a slight increase in organic matter accumulation. In this period, eutrophic species (Aulacoseira granulata and Staurosira construens became increasingly dominant. From the 1940s until the 1970s the diatom signal is more equivocal: after the initial decrease in the relative abundance of A. granulata and S. construens their numbers fluctuate without a clear pattern. Sedimentation rates strongly fluctuate in this period. From 1978 onwards eutrophic species are in decline while indicators of oligotrophic conditions, such as Cyclotella stelligera and Aulacoseira distans, become more abundant. This shift in the lake trophic status could not be attributed to a reduction in the nutrient load from the catchment and we hypothesize that the invasion of the lake by the submersed macrophyte Egeria densa has altered nutrient availability to the plankton communities. This is in agreement with the hydrocarbons and fatty acid analyses which demonstrate a shift in carbon number distributions from short chain alkanes and alkanoic acids (typical for microalgae to long chain molecules (characteristic for higher plants in the upper layers of the lake sedimentSe realizó la reconstrucción histórica de los últimos 150 años de Laguna Chica de San Pedro (Concepción, VIII Región, Chile, a través de la utilización de los restos de diatomeas, hidrocarburos y ácidos grasos contenidos en la columna de sedimento. El análisis estratigráfico de las diatomeas reveló la presencia de tres períodos diferentes. El primer período (1883-1940's, mostró un marcado aumento de las

  1. Detección de adulteraciones en grasa láctea a través del tratamiento por regresión lineal múltiple de perfiles de ácidos grasos totales

    Bernal, S. M.

    2005-03-01

    Full Text Available The total fatty acids profile of a genuine milk fat from an important milk producing area of Argentina was determined together with the total fatty acids profiles of sunflower, soybean and coconut oils and bovine and porcine fats. These results were used for characterization of the fatty acid profile of genuine milk fat and for detection of the adulteration of milk fat with those oils and fats. Triglycerides were transesterified in an acid medium with ethanol – sulfuric acid. Ethyl esters were quantified by gas chromatography using two internal standards (C7:0 and C17:0 added to the anhydrous fat. The most characteristic fatty acids were determined. The fatty acids profiles of mixtures of milk fat with vegetable and animal fats were mathematically calculated. Vegetable oils were added from 2 to 10 %, while animal fats were added up to 15 %. In this way different data matrices were obtained. Stepwise multiple regression analysis was applied to these matrices with the aim of obtaining a relation between adulteration percentage and the total fatty acids profile for each fat selected as adulterant. Good correlation coefficients were obtained for analyzed matrices. Equations were validated by employing the cross validation method, and were applied to genuine samples of milk fat and to mixtures by mass balances of these milk fats with the different adulterant fats. A good prediction of adulterations was obtained with the application of equations.Se determinó el perfil de ácidos grasos totales de muestras de grasa láctea genuina de una importante cuenca lechera de la República Argentina obtenidas durante un año (2002-2003, y de aceites de girasol, soja, coco y sebos vacuno y porcino, con el objetivo de estudiar el perfil característico de la grasa láctea y poder detectar adulteraciones de la misma con las grasas mencionadas. Se empleó el método de transesterificación de los triglicéridos en medio ácido, utilizando etanol-ácido sulf

  2. Molecular mechanisms of steatosis in nonalcoholic fatty liver disease Mecanismos moleculares de la esteatosis en la patología de hígado graso no alcohólico

    P. Pettinelli

    2011-06-01

    Full Text Available Nonalcoholic fatty liver disease (NAFLD is the most important cause of chronic liver disease and is considered the hepatic manifestation of the metabolic syndrome associated with diabetes mellitus type 2. The prevalence of NAFLD in the general population reaches 15-20%. It is also estimated that nonalcoholic steatohepatitis (NASH affects 3% of the population. NAFLD refers to a wide spectrum of liver damage, which ranges from simple steatosis or intracellular triglyceride accumulation, to inflammation (NASH, fibrosis and cirrhosis. The mechanisms involved in the accumulation of triglycerides in the liver and subsequent hepatocellular damage are multifactorial and are not completely understood. However, metabolic changes such as insulin resistance (IR are developed, being a common factor in the retention of fatty acids (FA within the hepatocytes with oxidation and production of free radicals at the mitochondrial level, which are capable of causing lipid peroxidation, cytokine production, and necrosis. In addition, there are alterations in the hepatic bioavailability of long chain n-3 polyunsaturated fatty acids, conditions that alter the expression of a series of transcriptional factors involved in lipolytic and lipogenic processes in the liver. A greater knowledge of the etiopathogenic mechanisms of NAFLD is fundamental for the development of future effective therapeutic strategies. The pathophysiological fundamentals of liver steatosis are analyzed in this study.La enfermedad de Hígado graso no alcohólico (HGNA es la causa más importante de enfermedad hepática crónica y es considerado la manifestación hepática del síndrome metabólico asociado a obesidad y diabetes mellitus tipo 2. La prevalencia de la enfermedad de HGNA en la población general alcanza el 15-20%, estimándose además que la esteatohepatitis no-alcohólica (EHNA afecta al 3%. El HGNA se refiere a un amplio espectro de daño hepático, que va desde esteatosis simple o

  3. COMPOSICIÓN MOLECULAR DE ACIDOS HUMICOS EVALUADA MEDIANTE PIRÓLISIS -CROMATOGRAFIA DE GASES- MASAS E HIDRÓLISIS TÉRMICA ASISTIDA Y METILACIÓN, EN SUELOS ALTOANDINOS – COLOMBIA

    Claudia Martinez

    2014-07-01

    Full Text Available Se determinó la composición  molecular de ácidos húmicos (AH, extraídos del horizonte A de suelos altoandinos, Colombia dedicados a tres usos: bosque primario, cultivo y pastura. Los AH se obtuvieron mediante extracción secuencial de la materia orgánica humificada (MOH con soluciones de tetraborato, pirofosfato e hidróxido de sodio (0,1N, y fueron purificados por diferentes procesos analíticos. Su composición molecular se determinó  por Py-GC/MS y THMA. Los diferentes productos de la pirolisis se clasificaron atendiendo a la familia química a la que pertenecen,  prevalecieron los ácidos grasos (FA como el producto más abundante en los AH de todos los usos, mientras que  los fenoles, esteroles, S-compuestos y terpenos se encontraron en menor abundancia. Se presentaron diferencias en los porcentajes de abundancia relativa de los grupos identificados, demostrando que el cambio de uso de suelo influye en las propiedades físicas, químicas y biológicas del suelo por lo que se perciben diferentes grados de transformación, que afectan la composición de los AH y su reactividad en el suelo.

  4. Overpopulation of $\\bar \\Omega$ in pp collisions a way to distinguish statistical hadronization from string dynamics

    Bleicher, M; Keränen, A; Aichelin, Jörg; Bass, S A; Becattini, F; Redlich, Krzysztof; Werner, K

    2002-01-01

    The $\\bar{\\Omega}/\\Omega$ ratio originating from string decays is predicted to be larger than unity in proton proton interactions at SPS energies ($E_{\\rm lab}$=160 GeV). The anti-omega dominance increases with decreasing beam energy. This surprising behavior is caused by the combinatorics of quark-antiquark production in small and low-mass strings. Since this behavior is not found in a statistical description of hadron production in proton proton collisions, it may serve as a key observable to probe the hadronization mechanism in such collisions.

  5. On the errors on Omega(0): Monte Carlo simulations of the EMSS cluster sample

    Oukbir, J.; Arnaud, M.

    2001-01-01

    We perform Monte Carlo simulations of synthetic EMSS cluster samples, to quantify the systematic errors and the statistical uncertainties on the estimate of Omega (0) derived from fits to the cluster number density evolution and to the X-ray temperature distribution up to z=0.83. We identify the...... scatter around the relation between cluster X-ray luminosity and temperature to be a source of systematic error, of the order of Delta (syst)Omega (0) = 0.09, if not properly taken into account in the modelling. After correcting for this bias, our best Omega (0) is 0.66. The uncertainties on the shape and...

  6. Overpopulation of $\\bar \\Omega$ in pp collisions: a way to distinguish statistical hadronization from string dynamics

    Bleicher, M.; Liu, F. M.; Keränen, A.; Aichelin, J.; Bass, S. A.; Becattini, F.; Redlich, K.; Werner, K

    2001-01-01

    The $\\bar{\\Omega}/\\Omega$ ratio originating from string decays is predicted to be larger than unity in proton proton interactions at SPS energies ($E_{\\rm lab}$=160 GeV). The anti-omega dominance increases with decreasing beam energy. This surprising behavior is caused by the combinatorics of quark-antiquark production in small and low-mass strings. Since this behavior is not found in a statistical description of hadron production in proton proton collisions, it may serve as a key observable ...

  7. Bioavailability of omega-3 long-chain polyunsaturated fatty acids from foods

    Mu, Huiling

    2008-01-01

    Increasing recognition of the importance of the omega-3 long chain polyunsaturated fatty acids (LCPUFA) has caused greater attention about dietary intake of these fatty acids. Fatty fish is the major dietary source of these fatty acids. Because of the low intake of fish at many places, foods...... enriched with omega-3 LCPUFA can be good alternatives to improve the intake of these fatty acids. Effects of lipid structures and food matrices on bioavailability of omega-3 LCPUFA have been investigated. Short term studies showed that both lipid structure and food matrix affect the bioavailability of...

  8. Baseline omega-3 index correlates with aggressive and attention deficit disorder behaviours in adult prisoners.

    Barbara J Meyer

    Full Text Available There is emerging evidence that the supplementation of omega-3 contributes to a decrease in aggressive behaviour in prison populations. A challenge of such research is achieving statistical power against effect sizes which may be affected by the baseline omega-3 index. There are no published data on the blood omega-3 index with studies of this kind to assess the variability of the blood omega-3 index in conjunction with aggression and attention deficit assessments.To determine if the variance of the omega-3 index is correlated with aggressive and attention deficit behaviour in a prison population.136 adult male prisoners were recruited from South Coast Correctional Centre (SCCC, NSW Australia. A 7 point categorisation was used to quantify levels of aggressive behaviour (4 weeks from individual SCCC case notes, whereby higher scores correspond to increasingly aggressive behaviour. Study participants completed the Aggression Questionnaire (AQ and the Brown's Attention Deficit Disorder Scales (BADDS, provided a blood sample for erythrocyte fatty acid analysis using gas chromatography and the omega-3 index was calculated.The baseline omega-3 index ranged from 2.3% to 10.3%, indicating that some participants already had substantial omega-3 intake, however a median of 4.7% indicated a lower overall omega-3 intake than the general Australian population. Assessment of aggressive and attention deficit behaviour shows that there were negative correlations between baseline omega-3 index and baseline aggression categorisation scores (r = -0.21, P = 0.016; total AQ score (r = -0.234, P = 0.011; Anger (r = -0.222 p = 0.016; Hostility AQ (r = -0.239, P = 0.009; indirect aggression (r = -0.188 p = 0.042; total BADDS (r = -0.263, p = 0.005; Activation (r = -0.224, p = 0.016; Attention (r = -0.192, p = 0.043; Effort (r = -0.253, p = 0.007; Affect (r = -0.330, p = 0.000 and Memory (r = -0.240, p = 0.010.There is a high variability in omega-3 status of a NSW prison

  9. RAVE stars tidally stripped/ejected from $\\omega$ Centauri globular cluster

    Fernández-Trincado, J G; Vieira, K; Moreno, E; Bienaymé, O; Reylé, C; Valenzuela, O; Pichardo, B; Robles-Valdez, F; Martins, A M M

    2015-01-01

    Using six-dimesional phase-space information from the Fourth Data release of the Radial Velocity Experiment (RAVE) over the range of Galactic longitude 240$^{\\circ}V_{esc,0}$) from the cluster, we identified 15 stars as having close encounters with $\\omega$ Centauri: (\\textit{i}) 8 stars with relative velocities $V_{rel} 200 $ kms$^{-1}$ during close encounters, and seems unlikely that they have been ejected from $\\omega$ Centauri. We also confirm the link between J131340.4-484714 as potential member of $\\omega$ Centauri, and probably ejected $\\sim$ 2.0 Myr ago, with a relative velocity $V_{rel}\\sim80$ kms$^{-1}$.

  10. Irradiation uniformity of spherical targets by multiple uv beams from OMEGA

    Direct-drive laser fusion demands extremely high levels of irradiation uniformity to ensure uniform compression of spherical targets. The assessment of illumination uniformity of targets irradiated by multiple beams from the OMEGA facility is made with the aid of multiple beams spherical superposition codes, which take into account ray tracing and absorption and a detailed knowledge of the intensity distribution of each beam in the target plane. In this report, recent estimates of the irradiation uniformity achieved with 6 and 12 uv beams of OMEGA will be compared with previous measurements in the IR, and predictions will be made for the uv illumination uniformity achievable with 24 beams of OMEGA

  11. Estudio de mezclas de disolventes orgánicos y triglicéridos de aceite de linaza o los ácidos grasos libres. I.- Volumen molar, refracción molar y viscosidad dinámica

    Mantell Serrano, C.

    1995-06-01

    Full Text Available Measurements of molar volume, refraction index and dynamic viscosity in mixtures of fatty acids or triglycerides and trichloroethylene, tetrachloroethylene and hexane were realized. Temperature range studied was 278-313 K each 5 K. The relationship between molar volume and molar fraction show high correlation coefficient In fatty acids with trichloroethylene and tetrachloroethylene mixtures. On the other hand, hexane mixtures show little contractions of molar volume at low molar fractions. Triglyceride mixtures present important deviations with regard to the ideality of the molar volume. The adjusts obtained for the molar volume values versus temperature are acceptable, calculating the coefficients of thermal expansion of the studied mixtures. Equally, the adjust of the experimental results of viscosity for two prediction equations are studied: one of additive type and the other of parabolic type.

    Se han realizado medidas del volumen molar, índice de refracción y viscosidad dinámica en el intervalo de temperatura de 278 K a 313 K cada 5 K, a mezclas de ácidos grasos o triglicéridos con tricloroetileno, tetracloroetileno y hexano. Las mezclas de ácidos grasos con tricloroetileno y tetracloroetileno, presentan unos altos coeficientes de correlación para los valores del volumen molar frente a la fracción molar, mientras que las mezclas con hexano, a fracciones molares bajas, manifiestan una pequeña contracción del volumen molar. Las mezclas de triglicéridos presentan importantes desviaciones con respecto a la Idealidad del volumen molar. Los ajustes obtenidos para los valores del volumen molar frente a la temperatura son aceptables, determinándose los valores del coeficiente de dilatación volumétrica a presión constante de las mezclas estudiadas. Igualmente se ha estudiado el ajuste de los resultados experimentales de viscosidad a dos ecuaciones de predicción: una del tipo aditiva y otra del tipo parabólico.

  12. Efectividad de los ácidos grasos hiperoxigenados en la prevención de las úlceras vasculares: Una revisión sistemática Hyperoxygenated fatty acid effectiveness in the prevention of the vascular ulcers

    Eva Vives Sánchez

    2011-09-01

    Full Text Available Objetivos: conocer la eficacia de los ácidos grasos hiperoxigenados (AGHO en la prevención de las úlceras vasculares. Determinar el nivel de evidencia existente sobre el uso de ácidos grasos hiperoxigenados en la prevención de las úlceras vasculares. Material y método: se realizó una búsqueda bibliográfica en la The Cochrane Library, The Joanna Briggs Institute, PubMed-Medline y CUIDEN. Para su evaluación se han seguido las recomendaciones del sistema GRADE para la valoraciún de la evidencia y la fuerza de las recomendaciones. Resultados: en The Cochrane Library y en The Joanna Briggs Institute no aparece ningún documento que haga referencia a los AGHO. En el resto de bases de datos encontramos estudios observacionales que hacen referencia a las úlceras vasculares y AGHO. Conclusiones: aun no disponiendo de ensayos clínicos que evidencien su uso, se han venido utilizando durante los últimos años, con resultados satisfactorios, en el cuidado de la piel de las personas con alteraciones vasculares en los miembros inferiores. De acuerdo con la clasificación GRADE, todos los estudios arrojan una calidad de evidencia baja, por lo cual estimamos necesario la puesta en marcha de investigaciones que aporten mayor evidencia científica.Objectives: to determine the effectiveness of hyper-oxygenated fatty acids in the prevention of vascular ulcers. Determine the level of existing evidence the use of hyper-oxygenated fatty acids in the prevention of vascular ulcers. Material and Method: we performed a literature search of Cochrane Library, The Joanna Briggs Institute, PubMed, Medline and CUIDEN. For the evaluation, have followed the recommendations of the GRADE system for assessing evidence and strength of recommendations. Results: The Cochrane Library and The Joanna Briggs Institute does not see any document referring to AGHO. In all other databases are observational studies that relate to vascular ulcers and AGHO. Conclusions: although

  13. Características físico-químicas y composición de ácidos grasos del aceite crudo extraído de residuos de mora (Rubus glaucus Benth

    Moreno-Álvarez, Mario José

    2003-09-01

    Full Text Available In this research the physicochemical characteristics and fatty acids composition of oil extracted from blackberry (Rubus glaucus Benth residue were determined. Mature fruits from ‘‘La Colonia Tovar’’, Aragua state, Venezuela harvested on April 2001, were processed to obtain seeds and residues of pulp. This residue was extracted with n-hexane (Soxhlet method. The crude oil was assayed by means of COVENIN and AOCS methods. The results showed: Iodine index 160.16 cg I2/g, refraction index to 25ºC 1.4780 , saponification value 193.76 mg K0H/g, peroxide value 30.40 meq 02/kg, free fatty acidity 2.83% (oleic acid, insaponifiable value 2.77%, phosphorus content 0.22% and stability 3.09 h (AOM. The major fatty acids found were oleic acid (55.39% and linoleic acid (29.51%.El objetivo de esta investigación fue caracterizar físico-químicamente el aceite extraído de residuos de mora (Rubus glaucus Benth y determinar su composición de ácidos grasos. Frutos maduros procedentes de ‘‘La Colonia Tovar’’, estado Aragua, Venezuela perteneciente a la cosecha Abril 2001, fueron procesados para obtener residuos constituidos por semillas y restos de pulpa. Los residuos fueron sometidos a un proceso de extracción mediante equipo Soxhlet utilizando como solvente n-hexano. El aceite crudo extraído fue caracterizado mediante normas COVENIN y AOCS. Se determinaron valores de índice de Iodo 160,16 cg I2/g; índice de refracción 1,4780 a 25ºC; índice de saponificación 193,76 mg KOH/g; índice de peróxidos 30,40 meq O2/kg; acidez libre oleica 2,83 %; materia insaponificable 2,77 %; fósforo 0,22 % y estabilidad AOM de 3,09 horas. Los ácidos grasos mayoritarios encontrados fueron el ácido oleico (55,39% y el ácido linoleico (29,51%.

  14. Neuronal calcium channel antagonists. Discrimination between calcium channel subtypes using omega-conotoxin from Conus magus venom

    The omega-conotoxins from the venom of fish-hunting cone snails are probably the most useful of presently available ligands for neuronal Ca channels from vertebrates. Two of these peptide toxins, omega-conotoxins MVIIA and MVIIB from the venom of Conus magus, were purified. The amino acid sequences show significant differences from omega-conotoxins from Conus geographus. Total synthesis of omega-conotoxin MVIIA was achieved, and biologically active radiolabeled toxin was produced by iodination. Although omega-conotoxins from C. geographus (GVIA) and C. magus (MVIIA) appear to compete for the same sites in mammalian brain, in amphibian brain the high-affinity binding of omega-conotoxin MVIIA has narrower specificity. In this system, it is demonstrated that a combination of two omega-conotoxins can be used for biochemically defining receptor subtypes and suggested that these correspond to subtypes of neutronal Ca2+ channels

  15. New Constraints on $\\Omega_M$, $\\Omega_\\Lambda$, and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST

    Knop, R A; Amanullah, R; Astier, Pierre; Blanc, G; Burns, M S; Conley, A; Deustua, S E; Doi, M; Ellis, R; Fabbro, S; Folatelli, G; Fruchter, A S; Garavini, G; Garmond, S; Garton, K; Gibbons, R; Goldhaber, G; Goobar, A; Groom, D E; Hardin, D; Hook, I; Howell, D A; Kim, A G; Lee Byung Cheol; Lidman, C E; Méndez, J; Nobili, S; Nugent, P; Pain, R; Panagia, N; Pennypacker, C R; Perlmutter, S; Quimby, R; Raux, J; Regnault, N; Ruiz-Lapuente, P; Sainton, G; Schaefer, B; Schahmaneche, K; Smith, E; Spadafora, A L; Stanishev, V; Sullivan, M; Walton, N A; Wang, L; Wood-Vasey, W M; Yasuda, N

    2003-01-01

    We report measurements of $\\Omega_M$, $\\Omega_\\Lambda$, and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of high-redshift supernovae that confirms previous supernova evidence for an accelerating Universe. Combined with earlier Supernova Cosmology Project data, the new supernovae yield a flat-universe measurement of the mass density $\\Omega_M=0.25^{+0.07}_{-0.06}$ (statistical) $\\pm0.04$ (identified systematics), or equivalently, a cosmological constant of $\\Omega_\\Lambda=0.75^{+0.06}_{-0.07}$ (statistical) $\\pm0.04$ (identified systematics). When the supernova results are combined with independent flat-universe measurements of $\\Omega_M$ from CMB and galaxy redshift distortion data, they provide a measurement of $w=-1.05^{+0.15}_{-0.20}$ (statistical) $\\pm0.09$ (identified systematic), if w is assumed to be constant in time. The new data offer greatly improved color measurements of the high-redshift supernovae, and hence imp...

  16. Stability of omega-3 LC-PUFA-rich photoautotrophic microalgal oils compared to commercially available omega-3 LC-PUFA oils.

    Ryckebosch, Eline; Bruneel, Charlotte; Termote-Verhalle, Romina; Lemahieu, Charlotte; Muylaert, Koenraad; Van Durme, Jim; Goiris, Koen; Foubert, Imogen

    2013-10-23

    Microalgae are the primary producers of omega-3 LC-PUFA, which are known for their health benefits. Their oil may thus be a potential alternative for fish oil. However, oxidative and hydrolytic stability of omega-3 LC-PUFA oils are important parameters. The purpose of this work was therefore to evaluate these parameters in oils from photoautotrophic microalgae (Isochrysis, Phaeodactylum, Nannochloropsis gaditana, and Nannochloropsis sp.) obtained with hexane/isopropanol (HI) and hexane (H) and compare them with commercial omega-3 LC-PUFA oils. When the results of both the primary and secondary oxidation parameters were put together, it was clear that fish, tuna, and heterotrophic microalgae oil are the least oxidatively stable oils, whereas krill oil and the microalgae oils performed better. The microalgal HI oils were shown to be more oxidatively stable than the microalgal H oils. The hydrolytic stability was shown not to be a problem during the storage of any of the oils. PMID:24111711

  17. Production of the omega meson in the pd --> 3He omega reaction at 1450 MeV and 1360 MeV

    Schonning, K; Bashkanov, M; Berlowski, M; Bogoslawsky, D; Calén, H; Clement, H; Demirors, L; Ekström, C; Fransson, K; Geren, L; Gustafsson, L; Höistad, B; Ivanov, G; Jacewicz, M; Jiganov, E; Johansson, T; Keleta, S; Khakimova, O; Khemchandani, K P; Kren, F; Kullander, Sven; Kupsc, A; Kuzmin, A; Lindberg, K; Marciniewski, P; Morosov, B; Oelert, W; Pauly, C; Petren, H; Petukhov, Yu P; Povtorejko, A; Ruber, R J M Y; Scobel, W; Shafigullin, R; Shwartz, B; Skorodko, T; Sopov, V; Stepaniak, J; Tegner, P -E; Engblom, P Thorngren; Tikhomirov, V; Turowiecki, A; Wagner, G J; Wilkin, C; Wolke, M; Zabierowski, J; Zartova, I; Zlomanczuk, Yu

    2009-01-01

    The production of $\\omega$ mesons in the $pd \\to{}^3$He$ \\omega$ reaction has been studied at two energies near the kinematic threshold, $T_p=1450$ MeV and $T_p=1360$ MeV. The differential cross section was measured as a function of the $\\omega$ cm angle at both energies over the whole angular range. Whereas the results at 1360 MeV are consistent with isotropy, strong rises are observed near both the forward and backward directions at 1450 MeV. Calculations made using a two-step model with an intermediate pion fail to reproduce the shapes of the measured angular distributions and also underestimate the total cross sections.

  18. Recent advances in omega-3 for dry eye%Omega-3治疗干眼的研究进展

    蔡伟浩; 彭玲; 陆晓和; 吴伟

    2016-01-01

    干眼是眼科常见病、多发病,可以引起一系列严重影响患者视功能的并发症.近年来流行病学调查显示干眼患病率逐年增加.由于干眼病因繁多,发病机制复杂,目前临床上对干眼缺乏有效的治疗.近期学者们发现,口服omega-3甚至局部使用omega-3滴眼可以起到治疗干眼的作用.本文就omega-3治疗干眼的研究进展及其治疗干眼的机制作一综述,为干眼的治疗提供新的思路.

  19. Measurement of the $\\Xi_b^-$ and $\\Omega_b^-$ baryon lifetimes

    Aaij, Roel; Adinolfi, Marco; Affolder, Anthony; Ajaltouni, Ziad; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Anderson, Jonathan; Andreassen, Rolf; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Bachmann, Sebastian; Back, John; Badalov, Alexey; Balagura, Vladislav; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Bauer, Thomas; Bay, Aurelio; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Belogurov, Sergey; Belous, Konstantin; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bien, Alexander; Bifani, Simone; Bird, Thomas; Bizzeti, Andrea; Bjørnstad, Pål Marius; Blake, Thomas; Blanc, Frédéric; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borghi, Silvia; Borgia, Alessandra; Borsato, Martino; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Brambach, Tobias; van den Brand, Johannes; Bressieux, Joël; Brett, David; Britsch, Markward; Britton, Thomas; Brook, Nicholas; Brown, Henry; Bursche, Albert; Busetto, Giovanni; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Camboni, Alessandro; Campana, Pierluigi; Campora Perez, Daniel; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carranza-Mejia, Hector; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Cheung, Shu-Faye; Chiapolini, Nicola; Chrzaszcz, Marcin; Ciba, Krzystof; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coombes, Matthew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Counts, Ian; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dalseno, Jeremy; David, Pascal; David, Pieter; Davis, Adam; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Silva, Weeraddana; De Simone, Patrizia; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Déléage, Nicolas; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Di Canto, Angelo; Dijkstra, Hans; Donleavy, Stephanie; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dossett, David; Dovbnya, Anatoliy; Dupertuis, Frederic; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; El Rifai, Ibrahim; Elsasser, Christian; Esen, Sevda; Evans, Timothy; Falabella, Antonio; Färber, Christian; Farinelli, Chiara; Farley, Nathanael; Farry, Stephen; Ferguson, Dianne; Fernandez Albor, Victor; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fontana, Marianna; Fontanelli, Flavio; Forty, Roger; Francisco, Oscar; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; Gandini, Paolo; Gao, Yuanning; Garofoli, Justin; Garra Tico, Jordi; Garrido, Lluis; Gaspar, Clara; Gauld, Rhorry; Gavardi, Laura; Gersabeck, Evelina; Gersabeck, Marco; Gershon, Timothy; Ghez, Philippe; Gianelle, Alessio; Giani', Sebastiana; Gibson, Valerie; Giubega, Lavinia-Helena; Gligorov, Vladimir; Göbel, Carla; Golubkov, Dmitry; Golutvin, Andrey; Gomes, Alvaro; Gordon, Hamish; Gotti, Claudio; Grabalosa Gándara, Marc; Graciani Diaz, Ricardo; Granado Cardoso, Luis Alberto; Graugés, Eugeni; Graziani, Giacomo; Grecu, Alexandru; Greening, Edward; Gregson, Sam; Griffith, Peter; Grillo, Lucia; Grünberg, Oliver; Gui, Bin; Gushchin, Evgeny; Guz, Yury; Gys, Thierry; Hadjivasiliou, Christos; Haefeli, Guido; Haen, Christophe; Haines, Susan; Hall, Samuel; Hamilton, Brian; Hampson, Thomas; Han, Xiaoxue; Hansmann-Menzemer, Stephanie; Harnew, Neville; Harnew, Samuel; Harrison, Jonathan; Hartmann, Thomas; He, Jibo; Head, Timothy; Heijne, Veerle; Hennessy, Karol; Henrard, Pierre; Henry, Louis; Hernando Morata, Jose Angel; van Herwijnen, Eric; Heß, Miriam; Hicheur, Adlène; Hill, Donal; Hoballah, Mostafa; Hombach, Christoph; Hulsbergen, Wouter; Hunt, Philip; Hussain, Nazim; Hutchcroft, David; Hynds, Daniel; Idzik, Marek; Ilten, Philip; Jacobsson, Richard; Jaeger, Andreas; Jalocha, Pawel; Jans, Eddy; Jaton, Pierre; Jawahery, Abolhassan; Jezabek, Marek; Jing, Fanfan; John, Malcolm; Johnson, Daniel; Jones, Christopher; Joram, Christian; Jost, Beat; Jurik, Nathan; Kaballo, Michael; Kandybei, Sergii; Kanso, Walaa; Karacson, Matthias; Karbach, Moritz; Kelsey, Matthew; Kenyon, Ian; Ketel, Tjeerd; Khanji, Basem; Khurewathanakul, Chitsanu; Klaver, Suzanne; Kochebina, Olga; Kolpin, Michael; Komarov, Ilya; Koopman, Rose; Koppenburg, Patrick; Korolev, Mikhail; Kozlinskiy, Alexandr; Kravchuk, Leonid; Kreplin, Katharina; Kreps, Michal; Krocker, Georg; Krokovny, Pavel; Kruse, Florian; Kucharczyk, Marcin; Kudryavtsev, Vasily; Kurek, Krzysztof; Kvaratskheliya, Tengiz; La Thi, Viet Nga; Lacarrere, Daniel; Lafferty, George; Lai, Adriano; Lambert, Dean; Lambert, Robert W; Lanciotti, Elisa; Lanfranchi, Gaia; Langenbruch, Christoph; Langhans, Benedikt; Latham, Thomas; Lazzeroni, Cristina; Le Gac, Renaud; van Leerdam, Jeroen; Lees, Jean-Pierre; Lefèvre, Regis; Leflat, Alexander; Lefrançois, Jacques; Leo, Sabato; Leroy, Olivier; Lesiak, Tadeusz; Leverington, Blake; Li, Yiming; Liles, Myfanwy; Lindner, Rolf; Linn, Christian; Lionetto, Federica; Liu, Bo; Liu, Guoming; Lohn, Stefan; Longstaff, Iain; Lopes, Jose; Lopez-March, Neus; Lowdon, Peter; Lu, Haiting; Lucchesi, Donatella; Luo, Haofei; Lupato, Anna; Luppi, Eleonora; Lupton, Oliver; Machefert, Frederic; Machikhiliyan, Irina V; Maciuc, Florin; Maev, Oleg; Malde, Sneha; Manca, Giulia; Mancinelli, Giampiero; Manzali, Matteo; Maratas, Jan; Marchand, Jean François; Marconi, Umberto; Marin Benito, Carla; Marino, Pietro; Märki, Raphael; Marks, Jörg; Martellotti, Giuseppe; Martens, Aurelien; Martín Sánchez, Alexandra; Martinelli, Maurizio; Martinez Santos, Diego; Martinez Vidal, Fernando; Martins Tostes, Danielle; Massafferri, André; Matev, Rosen; Mathe, Zoltan; Matteuzzi, Clara; Mazurov, Alexander; McCann, Michael; McCarthy, James; McNab, Andrew; McNulty, Ronan; McSkelly, Ben; Meadows, Brian; Meier, Frank; Meissner, Marco; Merk, Marcel; Milanes, Diego Alejandro; Minard, Marie-Noelle; Moggi, Niccolò; Molina Rodriguez, Josue; Monteil, Stephane; Moran, Dermot; Morandin, Mauro; Morawski, Piotr; Mordà, Alessandro; Morello, Michael Joseph; Moron, Jakub; Mountain, Raymond; Muheim, Franz; Müller, Katharina; Muresan, Raluca; Mussini, Manuel; Muster, Bastien; Naik, Paras; Nakada, Tatsuya; Nandakumar, Raja; Nasteva, Irina; Needham, Matthew; Neri, Nicola; Neubert, Sebastian; Neufeld, Niko; Neuner, Max; Nguyen, Anh Duc; Nguyen, Thi-Dung; Nguyen-Mau, Chung; Nicol, Michelle; Niess, Valentin; Niet, Ramon; Nikitin, Nikolay; Nikodem, Thomas; Novoselov, Alexey; Oblakowska-Mucha, Agnieszka; Obraztsov, Vladimir; Oggero, Serena; Ogilvy, Stephen; Okhrimenko, Oleksandr; Oldeman, Rudolf; Onderwater, Gerco; Orlandea, Marius; Otalora Goicochea, Juan Martin; Owen, Patrick; Oyanguren, Maria Arantza; Pal, Bilas Kanti; Palano, Antimo; Palombo, Fernando; Palutan, Matteo; Panman, Jacob; Papanestis, Antonios; Pappagallo, Marco; Parkes, Christopher; Parkinson, Christopher John; Passaleva, Giovanni; Patel, Girish; Patel, Mitesh; Patrignani, Claudia; Pazos Alvarez, Antonio; Pearce, Alex; Pellegrino, Antonio; Pepe Altarelli, Monica; Perazzini, Stefano; Perez Trigo, Eliseo; Perret, Pascal; Perrin-Terrin, Mathieu; Pescatore, Luca; Pesen, Erhan; Petridis, Konstantin; Petrolini, Alessandro; Picatoste Olloqui, Eduardo; Pietrzyk, Boleslaw; Pilař, Tomas; Pinci, Davide; Pistone, Alessandro; Playfer, Stephen; Plo Casasus, Maximo; Polci, Francesco; Poluektov, Anton; Polycarpo, Erica; Popov, Alexander; Popov, Dmitry; Popovici, Bogdan; Potterat, Cédric; Powell, Andrew; Prisciandaro, Jessica; Pritchard, Adrian; Prouve, Claire; Pugatch, Valery; Puig Navarro, Albert; Punzi, Giovanni; Qian, Wenbin; Rachwal, Bartolomiej; Rademacker, Jonas; Rakotomiaramanana, Barinjaka; Rama, Matteo; Rangel, Murilo; Raniuk, Iurii; Rauschmayr, Nathalie; Raven, Gerhard; Reichert, Stefanie; Reid, Matthew; dos Reis, Alberto; Ricciardi, Stefania; Richards, Alexander; Rihl, Mariana; Rinnert, Kurt; Rives Molina, Vincente; Roa Romero, Diego; Robbe, Patrick; Rodrigues, Ana Barbara; Rodrigues, Eduardo; Rodriguez Perez, Pablo; Roiser, Stefan; Romanovsky, Vladimir; Romero Vidal, Antonio; Rotondo, Marcello; Rouvinet, Julien; Ruf, Thomas; Ruffini, Fabrizio; Ruiz, Hugo; Ruiz Valls, Pablo; Sabatino, Giovanni; Saborido Silva, Juan Jose; Sagidova, Naylya; Sail, Paul; Saitta, Biagio; Salustino Guimaraes, Valdir; Sanchez Mayordomo, Carlos; Sanmartin Sedes, Brais; Santacesaria, Roberta; Santamarina Rios, Cibran; Santovetti, Emanuele; Sapunov, Matvey; Sarti, Alessio; Satriano, Celestina; Satta, Alessia; Savrie, Mauro; Savrina, Darya; Schiller, Manuel; Schindler, Heinrich; Schlupp, Maximilian; Schmelling, Michael; Schmidt, Burkhard; Schneider, Olivier; Schopper, Andreas; Schune, Marie Helene; Schwemmer, Rainer; Sciascia, Barbara; Sciubba, Adalberto; Seco, Marcos; Semennikov, Alexander; Senderowska, Katarzyna; Sepp, Indrek; Serra, Nicola; Serrano, Justine; Sestini, Lorenzo; Seyfert, Paul; Shapkin, Mikhail; Shapoval, Illya; Shcheglov, Yury; Shears, Tara; Shekhtman, Lev; Shevchenko, Vladimir; Shires, Alexander; Silva Coutinho, Rafael; Simi, Gabriele; Sirendi, Marek; Skidmore, Nicola; Skwarnicki, Tomasz; Smith, Anthony; Smith, Edmund; Smith, Eluned; Smith, Jackson; Smith, Mark; Snoek, Hella; Sokoloff, Michael; Soler, Paul; Soomro, Fatima; Souza, Daniel; Souza De Paula, Bruno; Spaan, Bernhard; Sparkes, Ailsa; Spinella, Franco; Spradlin, Patrick; Stagni, Federico; Stahl, Sascha; Steinkamp, Olaf; Stenyakin, Oleg; Stevenson, Scott; Stoica, Sabin; Stone, Sheldon; Storaci, Barbara; Stracka, Simone; Straticiuc, Mihai; Straumann, Ulrich; Stroili, Roberto; Subbiah, Vijay Kartik; Sun, Liang; Sutcliffe, William; Swientek, Krzysztof; Swientek, Stefan; Syropoulos, Vasileios; Szczekowski, Marek; Szczypka, Paul; Szilard, Daniela; Szumlak, Tomasz; T'Jampens, Stephane; Teklishyn, Maksym; Tellarini, Giulia; Teubert, Frederic; Thomas, Christopher; Thomas, Eric; van Tilburg, Jeroen; Tisserand, Vincent; Tobin, Mark; Tolk, Siim; Tomassetti, Luca; Tonelli, Diego; Topp-Joergensen, Stig; Torr, Nicholas; Tournefier, Edwige; Tourneur, Stephane; Tran, Minh Tâm; Tresch, Marco; Tsaregorodtsev, Andrei; Tsopelas, Panagiotis; Tuning, Niels; Ubeda Garcia, Mario; Ukleja, Artur; Ustyuzhanin, Andrey; Uwer, Ulrich; Vagnoni, Vincenzo; Valenti, Giovanni; Vallier, Alexis; Vazquez Gomez, Ricardo; Vazquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vecchi, Stefania; Velthuis, Jaap; Veltri, Michele; Veneziano, Giovanni; Vesterinen, Mika; Viaud, Benoit; Vieira, Daniel; Vieites Diaz, Maria; Vilasis-Cardona, Xavier; Vollhardt, Achim; Volyanskyy, Dmytro; Voong, David; Vorobyev, Alexey; Vorobyev, Vitaly; Voß, Christian; Voss, Helge; de Vries, Jacco; Waldi, Roland; Wallace, Charlotte; Wallace, Ronan; Walsh, John; Wandernoth, Sebastian; Wang, Jianchun; Ward, David; Watson, Nigel; Websdale, David; Whitehead, Mark; Wicht, Jean; Wiedner, Dirk; Wilkinson, Guy; Williams, Matthew; Williams, Mike; Wilson, Fergus; Wimberley, Jack; Wishahi, Julian; Wislicki, Wojciech; Witek, Mariusz; Wormser, Guy; Wotton, Stephen; Wright, Simon; Wu, Suzhi; Wyllie, Kenneth; Xie, Yuehong; Xing, Zhou; Xu, Zhirui; Yang, Zhenwei; Yuan, Xuhao; Yushchenko, Oleg; Zangoli, Maria; Zavertyaev, Mikhail; Zhang, Feng; Zhang, Liming; Zhang, Wen Chao; Zhang, Yanxi; Zhelezov, Alexey; Zhokhov, Anatoly; Zhong, Liang; Zvyagin, Alexander

    2014-01-01

    Using a data sample of pp collisions corresponding to an integrated luminosity of $3~ \\rm fb^{-1}$, the $\\Xi_b^-$ and $\\Omega_b^-$ baryons are reconstructed in the $\\Xi_b^- \\rightarrow J/\\psi \\Xi^-$ and $\\Omega_b^- \\rightarrow J/\\psi \\Omega^-$ decay modes and their lifetimes measured to be $\\tau (\\Xi_b^-) = 1.55\\, ^{+0.10}_{-0.09}~{\\rm(stat)} \\pm 0.03\\,{\\rm(syst)}$ ps, $\\tau (\\Omega_b^-) = 1.54\\, ^{+0.26}_{-0.21}~{\\rm(stat)} \\pm 0.05\\,{\\rm(syst)}$ ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions.

  20. Direct-drive implosion physics: Results from OMEGA and the National Ignition Facility

    Radha, P. B.; Goncharov, V. N.; Hohenberger, M.; Sangster, T. C.; Betti, R.; Craxton, R. S.; Edgell, D. H.; Epstein, R.; Froula, D. H.; Marozas, J. A.; Marshall, F. J.; McCrory, R. L.; McKenty, P. W.; Meyerhofer, D. D.; Michel, D. T.; Hu, S. X.; Seka, W.; Shvydky, A.; Skupsky, S.; Frenje, J. A.; Gatu-Johnson, M.; Petrasso, R. D.; Ma, T.; Le Pape, S.; Mackinnon, A. J.

    2016-03-01

    Direct-drive-implosion experiments from both OMEGA and the National Ignition Facility (NIF) are critical to gain confidence in ignition predictions on the NIF. Adequate performance of hydrodynamically scaled 1.8-MJ ignition designs must be obtained on OMEGA at 26 kJ. Implosions on the NIF must be used to identify and mitigate the effect of laser-plasma interactions (LPI's) on hydrodynamic parameters at the NIF scale. Results from spherically driven OMEGA cryogenic implosion experiments are described. Mitigation of nonuniformity sources and cross-beam energy transfer (CBET) is important for improving target performance on OMEGA. Initial polar-driven implosion experiments on the NIF have provided valuable measurements of trajectory and symmetry. Simulations that include the effect of CBET more closely reproduce the observed velocity.

  1. Dietary sources of omega 3 fatty acids: public health risks and benefits.

    Tur, J A; Bibiloni, M M; Sureda, A; Pons, A

    2012-06-01

    Omega 3 fatty acids can be obtained from several sources, and should be added to the daily diet to enjoy a good health and to prevent many diseases. Worldwide, general population use omega-3 fatty acid supplements and enriched foods to get and maintain adequate amounts of these fatty acids. The aim of this paper was to review main scientific evidence regarding the public health risks and benefits of the dietary sources of omega-3 fatty acids. A systematic literature search was performed, and one hundred and forty-five articles were included in the results for their methodological quality. The literature described benefits and risks of algal, fish oil, plant, enriched dairy products, animal-derived food, krill oil, and seal oil omega-3 fatty acids. PMID:22591897

  2. A Deep X-ray Search for the Putative IMBH in Omega Centauri

    Haggard, Daryl; Cool, A.; Heinke, C. O.; Cohn, H. N.; Lugger, P. M.; Van Der Marel, R. P.; Anderson, J.

    2013-04-01

    Omega Centauri, the Milky Way's most massive and enigmatic old stellar cluster, offers a treasure trove of astronomical discovery and controversy, including debate about the existence of an intermediate mass black hole (IMBH) buried in the cluster's core. We report preliminary results of deep 290 ksec) Chandra ACIS-I imaging of Omega Cen, which reveals no X-ray source at the cluster center reported by Anderson and van der Marel (2010), or at any other proposed center for the cluster. We discuss the significance of this new X-ray limit for the possible presence of an IMBH in Omega Cen. We also briefly describe our multiwavelength imaging and spectroscopic campaigns, which probe Omega Cen's binary populations, and the light they shed on the cluster's dynamical history.

  3. The Omega Counter, a Frequency Counter Based on the Linear Regression

    Rubiola, E; Bourgeois, P -Y; Vernotte, F

    2015-01-01

    This article introduces the {\\Omega} counter, a frequency counter -- or a frequency-to-digital converter, in a different jargon -- based on the Linear Regression (LR) algorithm on time stamps. We discuss the noise of the electronics. We derive the statistical properties of the {\\Omega} counter on rigorous mathematical basis, including the weighted measure and the frequency response. We describe an implementation based on a SoC, under test in our laboratory, and we compare the {\\Omega} counter to the traditional {\\Pi} and {\\Lambda} counters. The LR exhibits optimum rejection of white phase noise, superior to that of the {\\Pi} and {\\Lambda} counters. White noise is the major practical problem of wideband digital electronics, both in the instrument internal circuits and in the fast processes which we may want to measure. The {\\Omega} counter finds a natural application in the measurement of the Parabolic Variance, described in the companion article arXiv:1506.00687 [physics.data-an].

  4. Are Omega-3s Linked to Lower Risk for Fatal Heart Attack?

    ... Omega-3s Linked to Lower Risk for Fatal Heart Attack? These vital nutrients are found in seafood, nuts ... these people, nearly 8,000 suffered a first heart attack over time, which resulted in 2,781 deaths. ...

  5. Effective thermal diffusivity measurement of MWCNT nanofluids by using the 3{omega} method

    Oh, Dong Wook; Lee, Joon Sik [Seoul National Univ., Seoul (Korea, Republic of); Kwon, Oh Myoung [Korea Univ., Seoul (Korea, Republic of)

    2007-07-01

    The 3-omega (3{omega}) method is utilized to measure the effective thermal diffusivity of nanofluids. Metal lines which work as either a heater or a temperature sensor on a pyrex wafer are microfabricated. Thermal modeling of the traditional 3{omega} method is modified so that the thermal property of a droplet of the fluid that is placed on top of the two parallel thin film heaters can be calculated. Sinusoidal heat pulses are given to the heater and the induced temperature oscillation at a known distance is measured to calculate the thermal diffusivity of the surrounding fluid. The thermal diffusivity of the nanofluid containing Multi-Wall Carbon NanoTubes (MWCNTs) is measured with the fabricated 3{omega} device. The thermal conductivity and the heat capacity of the nanofluids can simultaneously be measured by the proposed method.

  6. Omega-3 fatty acids as treatments for mental illness: which disorder and which fatty acid?

    Sieswerda Lee E

    2007-09-01

    Full Text Available Abstract Background A growing number of observational and epidemiological studies have suggested that mental illness, in particular mood disorders, is associated with reduced dietary intake and/or cellular abundance of omega-3 polyunsaturated fatty acids (PUFA. This has prompted researchers to test the efficacy of omega-3 PUFA in a range of different psychiatric disorders. We have critically reviewed the double blind placebo controlled clinical trials published prior to April 2007 to determine whether omega-3 PUFA are likely to be efficacious in these disorders. Results Most trials involved a small number of participants but were largely well designed. Omega-3 PUFA were well tolerated by both children and adults with mild gastrointestinal effects being the only consistently reported adverse event. For schizophrenia and borderline personality disorder we found little evidence of a robust clinically relevant effect. In the case of attention deficit hyperactivity disorder and related disorders, most trials showed at most small benefits over placebo. A limited meta-analysis of these trials suggested that benefits of omega-3 PUFA supplementation may be greater in a classroom setting than at home. Some evidence indicates that omega-3 PUFA may reduce symptoms of anxiety although the data is preliminary and inconclusive. The most convincing evidence for beneficial effects of omega-3 PUFA is to be found in mood disorders. A meta-analysis of trials involving patients with major depressive disorder and bipolar disorder provided evidence that omega-3 PUFA supplementation reduces symptoms of depression. Furthermore, meta-regression analysis suggests that supplementation with eicosapentaenoic acid may be more beneficial in mood disorders than with docosahexaenoic acid, although several confounding factors prevented a definitive conclusion being made regarding which species of omega-3 PUFA is most beneficial. The mechanisms underlying the apparent efficacy of

  7. Omega-3 Fatty Acid Formulations in Cardiovascular Disease: Dietary Supplements are Not Substitutes for Prescription Products.

    Fialkow, Jonathan

    2016-08-01

    Omega-3 fatty acid products are available as prescription formulations (icosapent ethyl, omega-3-acid ethyl esters, omega-3-acid ethyl esters A, omega-3-carboxylic acids) and dietary supplements (predominantly fish oils). Most dietary supplements and all but one prescription formulation contain mixtures of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Products containing both EPA and DHA may raise low-density lipoprotein cholesterol (LDL-C). In clinical trials, the EPA-only prescription product, icosapent ethyl, did not raise LDL-C compared with placebo. To correct a common misconception, it is important to note that omega-3 fatty acid dietary supplements are not US FDA-approved over-the-counter drugs and are not required to demonstrate safety and efficacy prior to marketing. Conversely, prescription products are supported by extensive clinical safety and efficacy investigations required for FDA approval and have active and ongoing safety monitoring programs. While omega-3 fatty acid dietary supplements may have a place in the supplementation of diet, they generally contain lower levels of EPA and DHA than prescription products and are not approved or intended to treat disease. Perhaps due to the lack of regulation of dietary supplements, EPA and DHA levels may vary widely within and between brands, and products may also contain unwanted cholesterol or fats or potentially harmful components, including toxins and oxidized fatty acids. Accordingly, omega-3 fatty acid dietary supplements should not be substituted for prescription products. Similarly, prescription products containing DHA and EPA should not be substituted for the EPA-only prescription product, as DHA may raise LDL-C and thereby complicate the management of patients with dyslipidemia. PMID:27138439

  8. Supplementation with Omega-3 Fatty Acids in Psychiatric Disorders: A Review of Literature Data.

    Bozzatello, Paola; Brignolo, Elena; De Grandi, Elisa; Bellino, Silvio

    2016-01-01

    A new application for omega-3 fatty acids has recently emerged, concerning the treatment of several mental disorders. This indication is supported by data of neurobiological research, as highly unsaturated fatty acids (HUFAs) are highly concentrated in neural phospholipids and are important components of the neuronal cell membrane. They modulate the mechanisms of brain cell signaling, including the dopaminergic and serotonergic pathways. The aim of this review is to provide a complete and updated account of the empirical evidence of the efficacy and safety that are currently available for omega-3 fatty acids in the treatment of psychiatric disorders. The main evidence for the effectiveness of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) has been obtained in mood disorders, in particular in the treatment of depressive symptoms in unipolar and bipolar depression. There is some evidence to support the use of omega-3 fatty acids in the treatment of conditions characterized by a high level of impulsivity and aggression and borderline personality disorders. In patients with attention deficit hyperactivity disorder, small-to-modest effects of omega-3 HUFAs have been found. The most promising results have been reported by studies using high doses of EPA or the association of omega-3 and omega-6 fatty acids. In schizophrenia, current data are not conclusive and do not allow us either to refuse or support the indication of omega-3 fatty acids. For the remaining psychiatric disturbances, including autism spectrum disorders, anxiety disorders, obsessive-compulsive disorder, eating disorders and substance use disorder, the data are too scarce to draw any conclusion. Concerning tolerability, several studies concluded that omega-3 can be considered safe and well tolerated at doses up to 5 g/day. PMID:27472373

  9. Micronutrients, omega-3 fatty acids and cognitive performance in Indian schoolchildren

    Eilander, J.H.C.

    2009-01-01

    In developing countries, approximately 30-40% of school-age children suffer from iodine and iron deficiencies. Poverty and consumption of monotonous diets are underlying causes of inadequate intakes of micronutrients and omega-3 fatty acids and may have severe consequences for children’s cognitive development. Multiple micronutrient interventions have shown to benefit mental performance of children, but a systematic evaluation of the evidence is currently lacking. The omega-3 fatty acid, -li...

  10. Omega-3 fatty acids differentially modulate enzymatic anti-oxidant systems in skeletal muscle cells

    E. P. da Silva; Nachbar, R. T.; Levada-Pires, A. C.; Hirabara, S. M.; Lambertucci, R. H.

    2015-01-01

    During physical activity, increased reactive oxygen species production occurs, which can lead to cell damage and in a decline of individual’s performance and health. The use of omega-3 polyunsaturated fatty acids as a supplement to protect the immune system has been increasing; however, their possible benefit to the anti-oxidant system is not well described. Thus, the aim of this study was to evaluate whether the omega-3 fatty acids (docosahexaenoic acid and eicosapentaenoic acid) can be bene...

  11. Omega-3 polyunsaturated fatty acids: Their potential role in blood pressure prevention and management

    2010-01-01

    Omega-3 polyunsaturated fatty acids (PUFAs) from fish and fish oils appear to protect against coronary heart disease: their dietary intake is in fact inversely associated to cardiovascular disease morbidity/mortality in population studies. Recent evidence suggests that at least part of their heart protective effect is mediated by a relatively small but significant decrease in blood pressure level. In fact, omega-3 PUFAs exhibit wide-ranging biological actions that include regulating both vaso...

  12. Interaction Effect of 8-Week Aerobic Exercise and Omega-3 Fatty Acid

    Gholamreza Khedri

    2013-03-01

    Full Text Available Background: Scientific evidence indicates the impact of aerobic exercise and omega-3 fatty acids - both –are for the improvement of the cardiovascular system .The purpose of this research was about studies interaction effect of 8 weeks aerobic exercise and omega- 3 fatty acids supplementation on plasma adiponectin concentration of elderly men.Materials and Methods: In this study, 36 male non-athletes aged were between 50 to 70 year age range of men aged the city of Genaveh. Statistical sample of 36 male non- athletes in the age range 50 to 70 years old randomly selected in four groups of nine persons, respectively, the first group: exercise supplemental omega-3, Group II: Exercise placebo group: supplementation with omega-3 groups quarter: placebo. Endurance exercise training program includes 24 sessions and 3 sessions per week, with duration and intensity was determined. (55-70% HRmax. Daily supplements of omega-3 fatty acids were 2 Capsule. Blood samples were taken after fasting 14 hours before the study and 48 hours after the last training session was conducted. The data Kolmogrov-Smirnov, t-test, One-Way Anova at significance level of p≤ 0.05 were analyzed in SPSS 17. Results: The results of research after 8 weeks showed that moderate-intensity aerobic exercise and omega-3 fatty acids supplementation, only increased in the exercise + omega-3 fatty acids group (7.8% that could not created a significant increase in plasma adiponectin concentration groups. Also in final of research did not show a significant difference between groups in compare after 8 weeks. Conclusion: The results showed that by aerobic exercise and use of omega-3 fatty acids and increase amounts of adiponectin and its anti boil property, perhaps maybe that, adiponectin by effect of its preservation has a great role in prevention and reduce of cardiovascular diseases.

  13. On the structure of $End_{u_k(2)}(\\Omega_k^{\\otimes r})$

    Fu, Qiang; Yang, Qunguang

    2011-01-01

    Let $u_k(2)$ be the infinitesimal quantum $\\frak{gl}_2$ over $k$, where $k$ is a field containing an $l$th primitive root $\\epsilon$ of 1 with $l\\geq 3$ {\\it odd}. We will determine the basic algebra for ${u_k(2)}(\\Omega_k^{\\otimes r})$, where $\\Omega_k$ is the natural module for $u_k(2)$.

  14. Supplementation with Omega-3 Fatty Acids in Psychiatric Disorders: A Review of Literature Data

    Paola Bozzatello

    2016-07-01

    Full Text Available A new application for omega-3 fatty acids has recently emerged, concerning the treatment of several mental disorders. This indication is supported by data of neurobiological research, as highly unsaturated fatty acids (HUFAs are highly concentrated in neural phospholipids and are important components of the neuronal cell membrane. They modulate the mechanisms of brain cell signaling, including the dopaminergic and serotonergic pathways. The aim of this review is to provide a complete and updated account of the empirical evidence of the efficacy and safety that are currently available for omega-3 fatty acids in the treatment of psychiatric disorders. The main evidence for the effectiveness of eicosapentaenoic acid (EPA and docosahexaenoic acid (DHA has been obtained in mood disorders, in particular in the treatment of depressive symptoms in unipolar and bipolar depression. There is some evidence to support the use of omega-3 fatty acids in the treatment of conditions characterized by a high level of impulsivity and aggression and borderline personality disorders. In patients with attention deficit hyperactivity disorder, small-to-modest effects of omega-3 HUFAs have been found. The most promising results have been reported by studies using high doses of EPA or the association of omega-3 and omega-6 fatty acids. In schizophrenia, current data are not conclusive and do not allow us either to refuse or support the indication of omega-3 fatty acids. For the remaining psychiatric disturbances, including autism spectrum disorders, anxiety disorders, obsessive-compulsive disorder, eating disorders and substance use disorder, the data are too scarce to draw any conclusion. Concerning tolerability, several studies concluded that omega-3 can be considered safe and well tolerated at doses up to 5 g/day.

  15. 功能性原料Omega 3在产品中的应用

    英敏特信息咨询(上海)有限公司

    2008-01-01

    @@ 在二十一世纪,omega 3脂肪酸作为一种有益于心脏和精神健康的保健成分,在食品市场中越来越多地被使用,这一现象也反映在鱼油和omega 3胶囊在营养品/维他命市场日渐受到欢迎.

  16. Do Omega-3 Polyunsaturated Fatty Acids Prevent Cardiovascular Disease? A Review of the Randomized Clinical Trials

    Kimmig, Lucas M; Karalis, Dean G.

    2013-01-01

    Fish oil is rich in the omega-3 polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Numerous epidemiological studies and several large randomized clinical trials have shown that modest doses of omega-3 PUFAs significantly reduce the risk of unstable angina, myocardial infarction, and sudden cardiac death as well as death in coronary artery disease and heart failure patients. Based on the scientific evidence, the American Heart Association (AHA) has ...

  17. Linear Programming Models based on Omega Ratio for the Enhanced Index Tracking Problem

    Gaustaroba, Gianfranco; Mansini, Renata; Ogryczak, Wlodzimierz; Speranza, M. Grazia

    2014-01-01

    Modern performance measures differ from the classical ones since they assess the performance against a benchmark and usually account for asymmetry in return distributions. The Omega ratio is one of these measures. Until recently, limited research has addressed the optimization of the Omega ratio since it has been thought to be computationally intractable. The Enhanced Index Tracking Problem (EITP) is the problem of selecting a portfolio of securities able to outperform a market index while...

  18. A $(\\log n)^{\\Omega(1)}$ integrality gap for the Sparsest Cut SDP

    Cheeger, Jeff; Kleiner, Bruce; Naor, Assaf

    2009-01-01

    We show that the Goemans-Linial semidefinite relaxation of the Sparsest Cut problem with general demands has integrality gap $(\\log n)^{\\Omega(1)}$. This is achieved by exhibiting $n$-point metric spaces of negative type whose $L_1$ distortion is $(\\log n)^{\\Omega(1)}$. Our result is based on quantitative bounds on the rate of degeneration of Lipschitz maps from the Heisenberg group to $L_1$ when restricted to cosets of the center.

  19. Omega-3 fatty acids as treatments for mental illness: which disorder and which fatty acid?

    Sieswerda Lee E; Seguin Jennifer; Ross Brian M

    2007-01-01

    Abstract Background A growing number of observational and epidemiological studies have suggested that mental illness, in particular mood disorders, is associated with reduced dietary intake and/or cellular abundance of omega-3 polyunsaturated fatty acids (PUFA). This has prompted researchers to test the efficacy of omega-3 PUFA in a range of different psychiatric disorders. We have critically reviewed the double blind placebo controlled clinical trials published prior to April 2007 to determi...

  20. Effect of dietary selenium and omega-3 fatty acids on muscle composition and quality in broilers

    Hetland Harald

    2007-10-01

    Full Text Available Abstract Background Human health may be improved if dietary intakes of selenium and omega-3 fatty acids are increased. Consumption of broiler meat is increasing, and the meat content of selenium and omega-3 fatty acids are affected by the composition of broiler feed. A two-way analyses of variance was used to study the effect of feed containing omega-3 rich plant oils and selenium enriched yeast on broiler meat composition, antioxidation- and sensory parameters. Four different wheat-based dietary treatments supplemented with 5% rapeseed oil or 4% rapeseed oil plus 1% linseed oil, and either 0.50 mg selenium or 0.84 mg selenium (organic form per kg diet was fed to newly hatched broilers for 22 days. Results The different dietary treatments gave distinct different concentrations of selenium and fatty acids in thigh muscle; one percent linseed oil in the diet increased the concentration of the omega-3 fatty acids 18:3, 20:5 and 22:5, and 0.84 mg selenium per kg diet gave muscle selenium concentration at the same level as is in fish muscle (0.39 mg/kg muscle. The high selenium intake also resulted in increased concentration of the long-chain omega-3 fatty acids EPA (20:5, DPA (22:5 and DHA (22:6, thus it may be speculated if high dietary selenium might have a role in increasing the concentration of EPA, DPA and DHA in tissues after intake of plant oils contning omega-3 fatty acids. Conclusion Moderate modifications of broiler feed may give a healthier broiler meat, having increased content of selenium and omega-3 fatty acids. High intakes of selenium (organic form may increase the concentration of very long-chain omega-3 fatty acids in muscle.

  1. Omega-3 Supplementation Lowers Inflammation and Anxiety in Medical Students: A Randomized Controlled Trial

    Kiecolt-Glaser, Janice K.; Belury, Martha A.; Andridge, Rebecca; Malarkey, William B.; Glaser, Ronald

    2011-01-01

    Observational studies have linked lower omega-3 (n-3) polyunsaturated fatty acids (PUFAs) and higher omega-6 (n-6) PUFAs with inflammation and depression, but randomized controlled trial (RCT) data have been mixed. To determine whether n-3 decreases proinflammatory cytokine production and depressive and anxiety symptoms in healthy young adults, this parallel group, placebo-controlled, double-blind 12-week RCT compared n-3 supplementation with placebo. The participants, 68 medical students, pr...

  2. Composición proximal, ácidos grasos y características fisicoquímicas de aceite de harina artesanal de caribe (Serrasalmus rhombeus Pisces: Characidae proveniente de Caicara del Orinoco-Venezuela

    Granados, Ángel

    2006-12-01

    así como el perfil de ácidos grasos. Se seleccionaron aleatoriamente tres muestras de harina de caribe en locales comerciales ubicados en Caicara del Orinoco, estado Bolívar-Venezuela y se les determinó los contenidos de: humedad (6,00 ± 0,45 %, proteína cruda (N x 6,25: 52,78 ± 2,36 %, grasa cruda (22,47 ± 1,08 % y ceniza total (24,58 ± 3,12 %. El contenido de materia grasa fue extraído con n-hexano y se le determinó: Acidez libre (5,66 ± 0,15 % p/p como ácido oleico, índice de peróxidos (23,50 ± 1,02 meq O2/kg, índice de yodo (152,2 ± 0,5 cg I2/g, índice de saponificación (186,5 ± 0,3 mg KOH/g y materia insaponificable (2,3 ± 0,4 g/kg. El perfil de ácidos grasos, obtenido por cromatografía de gas, mostró una relación de ácidos grasos insaturados / ácidos grasos saturados de 5,62, donde el 59,9 % de los ácidos fueron de monoinsaturados y el 25,0 % poliinsaturados. La harina de caribe evaluada es una importante fuente de nutrientes de potencial utilidad como materia prima en alimentación animal.

  3. Obtención y criopreservación de células madre del tejido graso mediante liposucción Collecting and criopreservation of stem cells obtained by liposuction from fat tissue

    J. Planas Ribo

    2011-12-01

    Full Text Available Existen diferentes técnicas para la obtención directa de células madre embrionarias a través de embriones criopreservados en nitrógeno líquido (-196 ºC, blastómeros individuales, activación de ovocitos por transferencia nuclear y células madre del líquido amniótico. También es posible obtener células madre adultas hematopoyéticas y de la médula ósea, más conocidas y empleadas en la clínica desde hace tiempo, así como también de la sangre del cordón umbilical en recién nacidos y de la grasa corporal en adultos. La grasa autóloga corporal extraída mediante liposucción se reutiliza en ocasiones para injertar o infiltrar otras zonas corporales y faciales como material de relleno, pero en la mayoría de los casos es desechada. Por lo general, para obtener un resultado satisfactorio en el trasplante de grasa autóloga, son necesarios varios tiempos quirúrgicos por lo que sería muy útil contar con un banco de tejido adiposo personalizado. Existen diferentes estudios que demuestran que el tejido adiposo aspirado por liposucción convencional puede preservarse y almacenarse con éxito a baja temperatura (-85 ºC en banco de tejido para futuras aplicaciones. Las células madre mesenquimales (MSCs poseen gran capacidad de proliferación y diferenciación con un alto valor terapéutico. El tejido graso es un reservorio importante de MSCs capaces de diferenciarse en tejido óseo, cartilaginoso, muscular, etc. Si reservamos una pequeña cantidad del tejido graso lipoaspirado, podemos obtener una cantidad suficiente de MSCs y conservarlas mediante un método óptimo de criopreservación. En 2007 realizamos un estudio de la grasa lipoaspirada en 36 pacientes para demostrar y validar el método de obtención de tejido graso con su posterior traslado, manipulación y criopreservación en banco de células madre. Los resultados fueron satisfactorios y en junio del 2010 se validó el método de recogida, procesamiento y almacenamiento

  4. Monocapas de ácidos grasos. III. Ácidos palmítico, láurico y oleico sobre disoluciones acuosas que contienen solutos con grupos funcionales alcohólicos

    Rodríguez Patino, J. M.

    1991-10-01

    Full Text Available The influence exerted by the length or the insaturation of acyl chain on characteristics of fatty acid monolayers spread on aqueous solutions containing ethanol, glycerol, glucose or sucrose, is studied using a Langmuir type surface balance. The monolayer stability is function of acyl chain length and presence of insaturation. Generally, the factors decreasing monolayer stability can help transformations towards configurations with more expanded structures.

    Se ha estudiado la influencia que ejercen la longitud y la insaturación de la cadena acílica sobre las características de las monocapas de ácidos grasos esparcidas sobre medios acuosos que contienen etanol, glicerina, glucosa o sacarosa, utilizando una balanza de superficie de tipo Langmuir. La estabilidad de la monocapa es función de la longitud de la cadena acílica y de la presencia de insaturación. En general, los mismos factores que disminuyen la estabilidad de la monocapa pueden favorecer las transiciones hacia configuraciones con estructuras más expandidas.

  5. Caracterización de la composición en proteína, lípidos, energía y perfiles de ácidos grasos en huevos de tilapia roja (Oreochromis spp.

    Rubén Darío Valbuena-Villarreal

    2013-06-01

    Full Text Available Luego de considerar el significado de las tilapias en el escenario piscícola nacional, la posibilidad de mejorar los índices de producción es un imperativo técnico y, dentro de estos, focalizar esfuerzos experimentales en la semilla resulta ser una opción estratégica. Con el fin de establecer un referente de base se utilizaron las puestas individuales de 50 hembras de tilapia roja (Oreochromis spp. para determinar los contenidos en los huevos de proteína (% MS, extracto etéreo (% MS, energía (cal g-1 y los perfiles de ácidos grasos (%, con algunas relaciones de interés analítico. Salvo ciertas variaciones menores, los valores encontrados se ajustan a los registros disponibles para la especie en diferentes estudios, lo que sugiere que las dietas ofrecidas a los reproductores experimentales contienen los mínimos necesarios para asegurar una provisión de nutrientes y energía suficientes para los embriones y las larvas en formación. Se analiza que, como punto de partida, esta serie de datos tiene utilidad para el desarrollo de trabajos destinados a mejorar los estándares de producción de alevinos, considerando que las variaciones en la composición, que pueden ser determinadas sobre los huevos, se pueden utilizar y tienen validez como un indicativo directo de su calidad.

  6. A randomized clinical trial to determine the efficacy of manufacturers’ recommended doses of omega-3 fatty acids from different sources in facilitating cardiovascular disease risk reduction

    Laidlaw, Maggie; Carla A. Cockerline; William J. Rowe

    2014-01-01

    Background Omega-3 fatty acids confer beneficial health effects, but North Americans are lacking in their dietary omega-3-rich intake. Supplementation is an alternative to consumption of fish; however, not all omega-3 products are created equal. The trial objective was to compare the increases in blood levels of omega-3 fatty acids after consumption of four different omega-3 supplements, and to assess potential changes in cardiovascular disease risk following supplementation. Methods This was...

  7. Reduced Dietary Omega-6 to Omega-3 Fatty Acid Ratio and 12/15-Lipoxygenase Deficiency Are Protective against Chronic High Fat Diet-Induced Steatohepatitis

    Milos Lazic; Maria Eugenia Inzaugarat; Davide Povero; Iris C Zhao; Mark Chen; Madlena Nalbandian; Yury I Miller; Cherñavsky, Alejandra C.; Ariel E Feldstein; Sears, Dorothy D.

    2014-01-01

    Obesity is associated with metabolic perturbations including liver and adipose tissue inflammation, insulin resistance, and type 2 diabetes. Omega-6 fatty acids (ω6) promote and omega-3 fatty acids (ω3) reduce inflammation as they can be metabolized to pro- and anti-inflammatory eicosanoids, respectively. 12/15-lipoxygenase (12/15-LO) enzymatically produces some of these metabolites and is induced by high fat (HF) diet. We investigated the effects of altering dietary ω6/ω3 ratio and 12/15-LO ...

  8. Assembly of the T-cell antigen receptor. Participation of the CD3 omega chain

    Neisig, A; Vangsted, A; Zeuthen, J; Geisler, C

    1993-01-01

    Jurkat and different variants of this cell line. Cells were metabolically labeled, subjected to lysis, immunoprecipitated, and analyzed by SDS-PAGE. The results indicate that: 1) CD3 omega associates primarily with the CD3 delta epsilon complex; 2) CD3 omega is not associated with single Ti alpha or Ti......The human TCR is composed of the Ti alpha beta heterodimer in association with the CD3 chains CD3 gamma delta epsilon zeta 2. Another chain, referred to as CD3 omega, has recently been described in T cells. CD3 omega is an intracellular protein transiently associated with the CD3 complex during the...... assembly of the TCR in the endoplasmic reticulum (ER) and it is not expressed on the cell surface. The function of CD3 omega is unknown but it has been suggested that it plays an important role in the assembly of the TCR. We have studied the possible function of CD3 omega in the human leukemic T-cell line...

  9. Nuclear matter properties in the relativistic mean field model with $\\sigma-\\omega$ coupling

    Chung, K C; Santiago, A J; Zhang, J W

    2001-01-01

    The possibility of extending the linear sigma-omega model by introducing a sigma-omega coupling phenomenologically is explored. It is shown that, in contrast to the usual Walecka model, not only the effective nucleon mass M* but also the effective sigma meson mass m*_sigma and the effective omega meson mass m*_omega are nucleon density dependent. When the model parameters are fitted to the nuclear saturation point (the nuclear radius constant r_0=1.14fm and volume energy a_1=16.0MeV) as well as to the effective nucleon mass M*=0.85M, the model yields m*_sigma=1.09m_sigma and m*_omega=0.90m_omega at the saturation point, and the nuclear incompressibility K_0=501MeV. The lowest value of K_0 given by this model by adjusting the model parameters is around 227MeV.

  10. Microalgal biofactories: a promising approach towards sustainable omega-3 fatty acid production

    Adarme-Vega T

    2012-07-01

    Full Text Available Abstract Omega-3 fatty acids eicosapentaenoic acid (EPA and docosahexaenoic acid (DHA provide significant health benefits and this has led to an increased consumption as dietary supplements. Omega-3 fatty acids EPA and DHA are found in animals, transgenic plants, fungi and many microorganisms but are typically extracted from fatty fish, putting additional pressures on global fish stocks. As primary producers, many marine microalgae are rich in EPA (C20:5 and DHA (C22:6 and present a promising source of omega-3 fatty acids. Several heterotrophic microalgae have been used as biofactories for omega-3 fatty acids commercially, but a strong interest in autotrophic microalgae has emerged in recent years as microalgae are being developed as biofuel crops. This paper provides an overview of microalgal biotechnology and production platforms for the development of omega-3 fatty acids EPA and DHA. It refers to implications in current biotechnological uses of microalgae as aquaculture feed and future biofuel crops and explores potential applications of metabolic engineering and selective breeding to accumulate large amounts of omega-3 fatty acids in autotrophic microalgae.

  11. Understanding the Impact of Omega-3 Rich Diet on the Gut Microbiota

    Blanca S. Noriega

    2016-01-01

    Full Text Available Background. Recently, the importance of the gut microbiota in the pathogenesis of several disorders has gained clinical interests. Among exogenous factors affecting gut microbiome, diet appears to have the largest effect. Fatty acids, especially omega-3 polyunsaturated, ameliorate a range of several diseases, including cardiometabolic and inflammatory and cancer. Fatty acids associated beneficial effects may be mediated, to an important extent, through changes in gut microbiota composition. We sought to understand the changes of the gut microbiota in response to an omega-3 rich diet. Case Presentation. This case study investigated changes of gut microbiota with an omega-3 rich diet. Fecal samples were collected from a 45-year-old male who consumed 600 mg of omega-3 daily for 14 days. After the intervention, species diversity was decreased, but several butyrate-producing bacteria increased. There was an important decrease in Faecalibacterium prausnitzii and Akkermansia spp. Gut microbiota changes were reverted after the 14-day washout. Conclusion. Some of the health-related benefits of omega-3 may be due, in part, to increases in butyrate-producing bacteria. These findings may shed light on the mechanisms explaining the effects of omega-3 in several chronic diseases and may also serve as an existing foundation for tailoring personalized medical treatments.

  12. The effect of omega-3 on cognition in hypothyroid adult male rats.

    Abd Allah, Eman S H; Gomaa, Asmaa M S; Sayed, Manal M

    2014-09-01

    Thyroid hormones and omega-3 are essential for normal brain functions. Recent studies have suggested that omega-3 may protect against the risk of dementia. The aim of this study was to investigate the effect of hypothyroidism on spatial learning and memory in adult male rats, the underlying mechanisms and the possible therapeutic value of omega-3 supplementation. Thirty male rats were divided into three groups; control, hypothyroid and omega-3 treated. Hypothyroidism induced significant deficits in working and reference memories in radial arm maze, retention deficits in passive avoidance test and impaired intermediate and long-term memories in novel object recognition test. Serum total antioxidant capacity (TAC) and hippocampal serotonin and γ-aminobutyric acid (GABA) levels were decreased in the hypothyroid group as compared to the control group. Moreover, the hippocampus of hypothyroid rats showed marked structural changes as diffuse vacuolar degeneration and distortion of the pyramidal cells. Immunohistochemistry showed that the expression of Cav1.2 (the voltage dependent LTCC alpha 1c subunit) protein was increased in the hypothyroid group as compared to the control group. Omega-3 supplementation ameliorated memory deficits, increased TAC, decreased the structural changes and decreased the expression of Cav1.2 protein. In conclusion omega-3 could be useful as a neuroprotective agent against hypothyroidism-induced cognitive impairment. PMID:25183510

  13. Omega-3 Fatty Acids for Depression in Multiple Sclerosis: A Randomized Pilot Study.

    Lynne Shinto

    Full Text Available Multiple sclerosis is the most common chronic disabling disease in the central nervous system in young to middle aged adults. Depression is common in multiple sclerosis (MS affecting between 50–60% of patients. Pilot studies in unipolar depression report an improvement in depression when omega-3 fatty acids are given with antidepressants. The objective of this study was to investigate whether omega-3 fatty acid supplementation, as an augmentation therapy, improves treatment-resistant major depressive disorder (MDD in people with MS. We performed a randomized, double-blind, placebo-controlled pilot study of omega-3 fatty acids at six grams per day over three months. The primary outcome was a 50% or greater improvement on the Montgomery-Asberg Depression Rating Scale (MADRS. Thirty-nine participants were randomized and thirty-one completed the 3-month intervention. Improvement on MADRS between groups was not significantly different at the 3-month end point with 47.4% in the omega-3 fatty acid group and 45.5% in the placebo group showing 50% or greater improvement (p = 0.30. Omega-3 fatty acids as an augmentation therapy for treatment-resistant depression in MS was not significantly different than placebo in this pilot trial. Omega-3 fatty acid supplementation at the dose given was well-tolerated over 3 months.ClinicalTrials.gov NCT00122954.

  14. Omega-3 polyunsaturated fatty acids and vegetarian diets.

    Saunders, Angela V; Davis, Brenda C; Garg, Manohar L

    2013-08-19

    While intakes of the omega-3 fatty acid α-linolenic acid (ALA) are similar in vegetarians and non-vegetarians, intakes of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are low in vegetarians and virtually absent in vegans. Plasma, blood and tissue levels of EPA and DHA are lower in vegetarians than in non-vegetarians, although the clinical significance of this is unknown. Vegetarians do not exhibit clinical signs of DHA deficiency, but further research is required to ascertain whether levels observed in vegetarians are sufficient to support optimal health. ALA is endogenously converted to EPA and DHA, but the process is slow and inefficient and is affected by genetics, sex, age and dietary composition. Vegetarians can take practical steps to optimise conversion of ALA to EPA and DHA, including reducing intake of linoleic acid. There are no official separate recommendations for intake of fatty acids by vegetarians. However, we suggest that vegetarians double the current adequate intake of ALA if no direct sources of EPA and DHA are consumed. Vegetarians with increased needs or reduced conversion ability may receive some advantage from DHA and EPA supplements derived from microalgae. A supplement of 200-300 mg/day of DHA and EPA is suggested for those with increased needs, such as pregnant and lactating women, and those with reduced conversion ability, such as older people or those who have chronic disease (eg, diabetes). PMID:25369925

  15. Water in the Martian regolith from OMEGA/Mars Express

    Audouard, Joachim; Vincendon, Mathieu; Milliken, Ralph E; Jouglet, Denis; Bibring, Jean-Pierre; Gondet, Brigitte; Langevin, Yves

    2014-01-01

    Here we discuss one of the current reservoirs of water on Mars, the regolith and rocks exposed at the surface. This reservoir is characterized by the presence of H_{2}O- and OH- bearing phases that produce a broad absorption at a wavelength of \\sim 3 \\mu m in near-infrared (NIR) reflectance spectra. This absorption is present in every ice-free spectrum of the Martian surface obtained thus far by orbital NIR spectrometers. We present a quantitative analysis of the global distribution of the 3 \\mu m absorption using the Observatoire pour la Min\\'eralogie, l\\'\\Eau, les Glaces et l\\'\\Activit\\'e (OMEGA) imaging spectrometer that has been mapping the surface of Mars at kilometer scale for more than ten years. Based on laboratory reflectance spectra of a wide range of hydrous minerals and phases, we estimate a model-dependent water content of 4\\pm 1 wt. \\% in the equatorial and mid-latitudes. Surface hydration increases with latitude, with an asymmetry in water content between the northern and southern hemispheres. ...

  16. Omega-3 fatty acids and non-communicable diseases

    李铎

    2003-01-01

    Objective To review the relation between dietary omega-3 polyunsaturated fatty acids (ω-3 PUFA) and non-communicable diseases. Method Data were collected from scientific journals and conference publications, MEDLINE (1979-2002) and current content which included 68 prospective, cross-sectional, case control and dietary-intervention studies. Scientific paper selections were based on the association between ω-3 PUFA and non-communicable diseases. Results ω-3 PUFA has beneficial effects on increasing heart rate variability, decreasing the risk of stroke, reducing both systolic and diastolic blood pressure, insulin resistance and glucose metabolism. Long chain ω-3 PUFA has anti-cancer and anti-inflammatory activities. ω-3 PUFA has also been reported to have a beneficial effect on attention-deficit/hyperactivity disorder and schizophrenia, and may be effective in managing depression in adults. Conclusions Results from epidemiological and dietary intervention studies have shown that ω-3 PUFA represent powerfully a class of bioactive compounds and that dietary intake of ω-3 PUFA plays a critical role in human health in relation to non-communicable diseases.

  17. Progress of LMJ-relevant implosions experiments on OMEGA

    Casner A.

    2013-11-01

    Full Text Available In preparation of the first ignition attempts on the Laser Mégajoule (LMJ, an experimental program is being pursued on OMEGA to investigate LMJ-relevant hohlraums. First, radiation temperature levels close to 300 eV were recently achieved in reduced-scale hohlraums with modest backscatter losses. Regarding the baseline target design for fusion experiments on LMJ, an extensive experimental database has also been collected for scaled implosions experiments in both empty and gas-filled rugby-shaped hohlraums. We acquired a full picture of hohlraum energetics and implosion dynamics. Not only did the rugby hohlraums show significantly higher x-ray drive energy over the cylindrical hohlraums, but symmetry control by power balance was demonstrated, as well as high-performance D2 implosions enabling the use of a complete suite of neutrons diagnostics. Charged particle diagnostics provide complementary insights into the physics of these x-ray driven implosions. An overview of these results demonstrates our ability to control the key parameters driving the implosion, lending more confidence in extrapolations to ignition-scale targets.

  18. Measurement of double polarisation asymmetries in $\\omega$-photoproduction

    Eberhardt, H; Schmieden, H; Anisovich, A V; Bantes, B; Bayadilov, D; Beck, R; Beloglazov, Yu; Bichow, M; Boese, S; Brinkmann, K -Th; Challand, Th; Crede, V; Diez, F; Drexler, P; Dutz, H; Elsner, D; Ewald, R; Fornet-Ponse, K; Friedrich, St; Frommberger, F; Funke, Ch; Gottschall, M; Gridnev, A; Gruener, M; Gutz, E; Hammann, Ch; Hannappel, J; Hartmann, J; Hillert, W; Hoffmeister, Ph; Honisch, Ch; Jaegle, I; Kaiser, D; Kalinowsky, H; Kalischewski, F; Kammer, S; Keshelashvili, I; Kleber, V; Klein, F; Klempt, E; Koop, K; Krusche, B; Kube, M; Lang, M; Lopatin, I; Maghrbi, Y; Makonyi, K; Metag, V; Meyer, W; Mueller, J; Nanova, M; Nikonov, V; Novotny, R; Piontek, D; Reeve, S; Reicherz, G; Rostomyan, T; Runkel, S; Sarantsev, A; Schaepe, St; Schmidt, Ch; Schmitz, R; Seifen, T; Sokhoyan, V; Sumachev, V; Thiel, A; Thoma, U; Urban, M; van Pee, H; Walther, D; Wendel, Ch; Wiedner, U; Wilson, A; Winnebeck, A

    2015-01-01

    The first measurements of the beam-target-helicity-asymmetries $E$ and $G$ in the photoproduction of $\\omega$-mesons off protons at the CBELSA/TAPS experiment are reported. $E$ ($G$) was measured using circularly (linearly) polarised photons and a longitudinally polarised target. $E$ was measured over the photon energy range from close to threshold ($E_\\gamma = 1108$~MeV) to $E_\\gamma = 2300$~MeV and $G$ at a single energy interval of $1108 < E_\\gamma <1300$~MeV. Both measurements cover the full solid angle. The observables $E$ and $G$ are highly sensitive to the contribution of baryon resonances, with $E$ acting as a helicity filter in the $s$-channel. The new results indicate significant $s$-channel resonance contributions together with contributions from $t$-channel exchange processes. A partial wave analysis reveals strong contributions from the partial waves with spin-parity $J^P=3/2^+, 5/2^+$, and $3/2^-$.

  19. Dual, orthogonal, backlit pinhole radiography in OMEGA experiments

    Kuranz, C. C.; Blue, B. E.; Drake, R. P.; Robey, H. F.; Hansen, J. F.; Knauer, J. P.; Grosskopf, M. J.; Krauland, C.; Marion, D. C.

    2006-10-01

    Backlit pinhole radiography used with ungated film as a detector creates x-ray radiographs with increased resolution and contrast. Current hydrodynamics experiments on the OMEGA Laser use a three-dimensional sinusoidal pattern as a seed perturbation for the study of instabilities. The structure of this perturbation makes it highly desirable to obtain two simultaneous orthogonal backlighting views. We accomplished this using two backlit pinholes each mounted 12mm from the target. The pinholes, of varying size and shape, were centered on 5mm square foils of 50μm thick Ta. The backlighting is by K-alpha emission from a 500μm square Ti or Sc foil mounted 500μm from the Ta on a plastic substrate. Four laser beams overfill the metal foil, so that the expanding plastic provides radial tamping of the expanding metal plasma. The resulting x-rays pass through the target onto (ungated) direct exposure film (DEF). Interference between the two views is reduced by using a nose cone in front of the DEF, typically with a 9mm Ta aperture and with magnets to deflect electrons. Comparison of varying types of pinholes and film exposures will be presented from recent experiments as well as an analysis of the background noise created using this experimental technique.

  20. The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda,and w from the First Year Data Set

    Astier, P.; Guy, J.; Regnault, N.; Pain, R.; Aubourg, E.; Balam,D.; Basa, S.; Carlberg, R.G.; Fabbro, S.; Fouchez, D.; Hook, I.M.; Howell, D.A.; Lafoux, H.; Neill, J.D.; Palanque-Delabrouille, N.; Perrett, K.; Pritchet, C.J.; Rich, J.; Sullivan, M.; Taillet, R.; Aldering, G.; Antilogus, P.; Arsenijevic, V.; Balland, C.; Baumont, S.; Bronder, J.; Courtois, H.; Ellis, R.S.; Filiol, M.; Goncalves, A.C.; Goobar, A.; Guide, D.; Hardin, D.; Lusset, V.; Lidman, C.; McMahon, R.; Mouchet, M.; Mourao, A.; Perlmutter, S.; Ripoche, P.; Tao, C.; Walton, N.

    2005-10-14

    We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color light-curves measured using the MegaPrime/MegaCam instrument at the Canada-France-Hawaii Telescope (CFHT), by repeatedly imaging four one-square degree fields in four bands. Follow-up spectroscopy was performed at the VLT, Gemini and Keck telescopes to confirm the nature of the supernovae and to measure their redshift. With this data set, we have built a Hubble diagram extending to z = 1, with all distance measurements involving at least two bands. Systematic uncertainties are evaluated making use of the multiband photometry obtained at CFHT. Cosmological fits to this first year SNLS Hubble diagram give the following results: {Omega}{sub M} = 0.263 {+-} 0.042 (stat) {+-} 0.032 (sys) for a flat {Lambda}CDM model; and w = -1.023 {+-} 0.090 (stat) {+-} 0.054 (sys) for a flat cosmology with constant equation of state w when combined with the constraint from the recent Sloan Digital Sky Survey measurement of baryon acoustic oscillations.

  1. The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda, and w from the First Year Data Set

    Astier, P.; Guy, J.; Regnault, N.; Pain, R.; Aubourg, E.; Balam, D.; Basa, S.; Carlberg, R. G.; Fabbro, S.; Fouchez, D.; Hook, I. M.; Howell, D. A.; Lafoux, H.; Neill, J. D.; Palanque-Delabrouille, N.; Perrett, K.; Pritchet, C. J.; Rich, J.; Sullivan, M.; Taillet, R.; Aldering, G.; Antilogus, P.; Arsenijevic, V.; Balland, C.; Baumont, S.; Bronder, J.; Courtois, H.; Ellis, R. S.; Filiol, M.; Goncalves, A. C.; Goobar, A.; Guide, D.; Hardin, D.; Lusset, V.; Lidman, C.; McMahon, R.; Mouchet, M.; Mourao, A.; Perlmutter, S.; Ripoche, P.; Tao, C.; Walton, N.

    2005-10-14

    We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color light-curves measured using the MegaPrime/MegaCam instrument at the Canada-France-Hawaii Telescope (CFHT), by repeatedly imaging four one-square degree fields in four bands. Follow-up spectroscopy was performed at the VLT, Gemini and Keck telescopes to confirm the nature of the supernovae and to measure their redshift. With this data set, we have built a Hubble diagram extending to z = 1, with all distance measurements involving at least two bands. Systematic uncertainties are evaluated making use of the multiband photometry obtained at CFHT. Cosmological fits to this first year SNLS Hubble diagram give the following results: {Omega}{sub M} = 0.263 {+-} 0.042 (stat) {+-} 0.032 (sys) for a flat {Lambda}CDM model; and w = -1.023 {+-} 0.090 (stat) {+-} 0.054 (sys) for a flat cosmology with constant equation of state w when combined with the constraint from the recent Sloan Digital Sky Survey measurement of baryon acoustic oscillations.

  2. The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set

    Astier, Pierre; Regnault, N; Pain, R; Aubourg, E; Balam, D; Basa, S; Carlberg, R G; Fabbro, S; Fouchez, D; Hook, I M; Howell, D A; Lafoux, H; Neill, J D; Palanque-Delabrouille, Nathalie; Perrett, K; Pritchet, C J; Rich, J; Sullivan, M; Taillet, R; Aldering, G; Antilogus, P; Arsenijevic, V; Balland, C; Baumont, S; Bronder, J; Courtois, H; Ellis, Richard S; Filiol, M; Gonçalves, A C; Goobar, A; Guide, D; Hardin, D; Lusset, V; Lidman, C; McMahon, R; Mouchet, M; Mourao, A; Perlmutter, S; Ripoche, P; Tao, C; Walton, N

    2006-01-01

    We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color light-curves measured using the MegaPrime/MegaCam instrument at the Canada-France-Hawaii Telescope (CFHT), by repeatedly imaging four one-square degree fields in four bands. Follow-up spectroscopy was performed at the VLT, Gemini and Keck telescopes to confirm the nature of the supernovae and to measure their redshift. With this data set, we have built a Hubble diagram extending to z=1, with all distance measurements involving at least two bands. Systematic uncertainties are evaluated making use of the multi-band photometry obtained at CFHT. Cosmological fits to this first year SNLS Hubble diagram give the following results : Omega_M = 0.263 +/- 0.042(stat) +/- 0.032(sys) for a flat LambdaCDM model; and w = -1.023 +/- 0.090(stat) +/- 0.054(sys) for a flat cosmology with constant equation of state w when combined ...

  3. Study of baryon acoustic oscillations with SDSS DR12 data and measurements of $\\Omega_k$ and $\\Omega_\\textrm{DE}(a)$. Part II

    Hoeneisen, B

    2016-01-01

    We define Baryon Acoustic Oscillation (BAO) observables $\\hat{d}_\\alpha(z, z_c)$, $\\hat{d}_z(z, z_c)$, and $\\hat{d}_/(z, z_c)$ that do not depend on any cosmological parameter. From each of these observables we recover the BAO correlation length $d_\\textrm{BAO}$ with its respective dependence on cosmological parameters. These BAO observables are measured as a function of redshift $z$ with the Sloan Digital Sky Survey (SDSS) data release DR12. From the BAO measurements alone, or together with the correlation angle $\\theta_\\textrm{MC}$ of the Cosmic Microwave Background (CMB), we constrain the curvature parameter $\\Omega_k$ and the dark energy density $\\Omega_\\textrm{DE}(a)$ as a function of the expansion parameter $a$ in several scenarios. These observables are further constrained with external measurements of $h$ and $\\Omega_\\textrm{b} h^2$. We find some tension between the data and a cosmology with flat space and constant dark energy density $\\Omega_\\textrm{DE}(a)$.

  4. The CMS forward calorimeter prototype design studies and Omega(c)0 search at E781 experiment at Fermilab

    Ayan, Ahmet Sedat

    2004-05-01

    In the fit part, the Compact Muon Solenoid (CMS) forward calorimeter design studies are presented. The forward calorimeter consists of quartz fibers embedded in a steel absorber. Radiation damage studies of the quartz fiber and the absorber as well as the results of the first pre-production prototype PPP-I are presented. In the second part, the {Omega}{sub c}{sup 0}search studies at the SELEX (E781) experiment at FermiLab are presented. 107 {+-} 22 {Omega}{sub c}{sup 0} events are observed in three decay modes. The relative branching ratio ({Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup -}{pi}{sup +}{pi}{sup +})/{Beta}({Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup +}) is measured as 2.00 {+-} 0.45(stat) {+-} 0.32(sys).

  5. The OMEGA system for marine bioenergy, wastewater treatment, environmental enhancement, and aquaculture

    Trent, J. D.

    2013-12-01

    OMEGA is an acronym for Offshore Membrane Enclosure for Growing Algae. The OMEGA system consists of photobioreactors (PBRs) made of flexible, inexpensive clear plastic tubes attached to floating docks, anchored offshore in naturally or artificially protected bays [1]. The system uses domestic wastewater and CO2 from coastal facilities to provide water, nutrients, and carbon for algae cultivation [2]. The surrounding seawater maintains the temperature inside the PBRs and prevents the cultivated (freshwater) algae from becoming invasive species in the marine environment (i.e., if a PBR module accidentally leaks, the freshwater algae that grow in wastewater cannot survive in the marine environment). The salt gradient between seawater and wastewater is used for forward osmosis (FO) to concentrate nutrients and facilitate algae harvesting [3]. Both the algae and FO clean the wastewater, removing nutrients as well as pharmaceuticals and personal-care products [4]. The offshore infrastructure provides a large surface area for solar-photovoltaic arrays and access to offshore wind or wave generators. The infrastructure can also support shellfish, finfish, or seaweed aquaculture. The economics of the OMEGA system are supported by a combination of biofuels production, wastewater treatment, alternative energy generation, and aquaculture. By using wastewater and operating offshore from coastal cities, OMEGA can be located close to wastewater and CO2 sources and it can avoid competing with agriculture for water, fertilizer, and land [5]. By combining biofuels production with wastewater treatment and aquaculture, the OMEGA system provides both products and services, which increase its economic feasibility. While the offshore location has engineering challenges and concerns about the impact and control of biofouling [6], large OMEGA structure will be floating marine habitats and will create protected 'no-fishing' zones that could increase local biodiversity and fishery

  6. High Energy Density Studies at the OMEGA laser facility

    Boehly, Thomas

    2015-06-01

    The primary emphasis of the scientific program at the Laboratory for Laser Energetics is laser-driven inertial confinement fusion. We report on high-energy-density (HED) experiments that use the OMEGA laser to produce multi-megabar shocks in materials of interest to the national fusion effort and the associated HED sciences. We present measurements of the behavior of shocked diamond, in both the single-crystal and ultranano-crystalline forms used as an ablator material in fusion capsules. Using the impedance-matching technique both the Hugoniot and release behaviors are measured with respect to multiple reference materials. The release of shocked diamond into liquid deuterium is also measured. We present the results of sound-speed measurements in shocked quartz which is also used as a reference for sound speed measurements in CH and fused silica. This is done using an unsteady wave analysis that tracks the propagation of small perturbations in shock pressure as they traverse the shocked material from `piston' to shock front. The arrival times of these perturbations, as compared to the same in a reference material, provides the sound speed in the shock material. We also present results of optical and x-ray probing of shock waves in foam targets and solid targets, as well as the release plumes of shock material after shock breakout. The import of these measurements to the fusion program and basic HED science will be discussed and plans for future work presented. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-08NA28302.

  7. Present status of the omega program in Japan

    The management of high. level radioactive waste (HLW) generated from the reprocessing of spent fuel is very important as well as the safety assurance, to further develop nuclear electricity generation. National policy of managing this HLW in Japan is to solidify in a stable form and to dispose of ultimately into deep geological formations after 30 to 50 years of storage for cooling. In addition, the Japan Atomic Energy Commission submitted in October 1988 a report entitled Long-Term Program for Research and Development on Nuclide Partitioning and Transmutation (P-.T), from the viewpoints of conversion of HLW into useful resources and its disposal efficiency. The program plots a course for technological development up to the year 2000 and is called OMEGA which is the acronym derived from Options for Making Extra Gains from Actinides and fission products. The program was jointly stimulated by the collaborative efforts of the Japan Atomic Energy Research Institute (JAERI) and the Power Reactor and Nuclear Fuel Development Corporation (PNC). In the private sector, the Central Research Institute of Electric Power Industry (CRIEPI) has been also carrying out R and D on this subject. The Japanese government (represented by Science and Technology Agency) proposed an international cooperation for information exchange relevant to partitioning and transmutation technology under the framework of the OECD Nuclear Energy Agency, in January 1989. The first information exchange meeting on this subject was held in Japan in November 1990. Eleven OECD member countries and two international organizations namely IAEA and Joint Research Center of CEC participated in the meeting. A workshop on partitioning was held in Japan in November 1991, and a specialist meeting on accelerator driven transmutation was held in Switzerland in March 1992. (authors)

  8. Direct-Drive, Cryogenic Target Implosions on OMEGA

    Marshall, F. J.

    2004-11-01

    Direct-drive spherical implosions of cryogenic, D_2-filled capsules are being performed on the 60-beam OMEGA laser system. The targets are energy scaled from the baseline ignition design developed for the National Ignition Facility. Thin-walled (3- to 4-μm) CD polymer shells, ˜860 μm in diameter, are permeation-filled with ˜1000 atm of D2 gas. Once cooled to the D2 triple point ( ˜18.7 K), cryogenic layers are formed, characterized, and maintained to a uniformity of ˜2 μm rms. Low-adiabat ( ˜4), pulse shapes are used to study the effects on target performance of acceleration-phase Rayleigh--Taylor (RT) growth due to single-beam, short-wavelength nonuniformities (imprint) and deceleration-phase RT growth of the combined feedthrough and inner-surface perturbations. Full single-beam smoothing (1-THz bandwidth, 2-D SSD with polarization smoothing) is used on all of the drive pulses. Time-resolved and static x-ray images are used to measure the progress of the imploding shell and the shape of the stagnating core. Particle-based instruments are used to measure the fusion yield and rate, the ion temperature in the core, and the total fuel areal density. These experiments have produced fuel areal densities up to ˜100 mg/cm^2, primary neutron yields of ˜10^11, and secondary neutron yields ˜1% to 2% of the primary yield. Two-dimensional hydrocode simulations show good agreement with the experimental observations, and the scaled target performance is compared with the hydrocode predictions for the direct-drive ignition point design. Such comparisons give increasing confidence in the direct-drive approach to ICF ignition.

  9. The Effect of Omega-3 Fatty Acid Supplementation on Maternal Depression during Pregnancy: A Double Blind Randomized Controlled Clinical Trial

    Kaviani, Maasumeh; Saniee, Laleh; Azima, Sara; Sharif, Farkhondeh; Sayadi, Mehrab

    2014-01-01

    Background: Depression is one of the most debilitating disorders during pregnancy and its recovery and treatment are among the concerns of obstetrics and gynecology experts. The present study aimed to determine the effect of omega-3 supplement on mild depression during pregnancy among primiparous women. Method: In this double-blind clinical trial, 80 primiparous women were randomly divided into 2 groups of omega-3 and placebo. The experimental group received 1 g omega-3 capsules for 6 weeks. ...

  10. High Physiological Omega-3 Fatty Acid Supplementation Affects Muscle Fatty Acid Composition and Glucose and Insulin Homeostasis in Obese Adolescents

    Frida Dangardt; Yun Chen; Eva Gronowitz; Jovanna Dahlgren; Peter Friberg; Birgitta Strandvik

    2012-01-01

    Obese adolescents have high concentrations of saturated fatty acids and low omega-3 long-chain polyunsaturated fatty acids (LCUFAs) in plasma phospholipids. We aimed to investigate effects of omega-3 LCPUFA supplementation to obese adolescents on skeletal muscle lipids and glucose and insulin homeostasis. Twenty-five obese adolescents (14–17 years old, 14 females) completed a randomized double-blind crossover study supplying capsules containing either 1.2 g omega-3 LCPUFAs or placebo, for 3 m...

  11. Nutritional evaluation of microalgae oils rich in omega-3 long chain polyunsaturated fatty acids as an alternative for fish oil

    Ryckebosch, Eline; Bruneel, Charlotte; Termote-Verhalle, Romina; Goiris, Koen; Muylaert, Koenraad; Foubert, Imogen

    2014-01-01

    The purpose of this work was to evaluate the nutritional value of the total lipid extract of different omega-3 long chain polyunsaturated fatty acids producing photoautotrophic microalgae in one study. It was shown that microalgae oils from Isochrysis, Nannochloropsis, Phaeodactylum, Pavlova and Thalassiosira contain sufficient omega-3 LC-PUFA to serve as an alternative for fish oil, which was used as the ‘golden standard’. In the microalgae oils an important part of the omega-3 long chain po...

  12. Influence of selenomethionine and omega-3 fatty acid on serum mineral profile and nutrient utilization of broiler chicken

    Pankaj Kumar

    2015-02-01

    Full Text Available Aim: This study was conducted to investigate the effect of selenomethionine and omega-3 fatty acid on serum mineral profile and nutrient utilization of broiler chicken. Materials and Methods: The present study was a 2×3 factorial arrangement of two levels of selenomethionine (0 and 0.3 ppm and three levels of omega-3 fatty acid (0, 0.5 and 1%. Day-old Vencobb broiler chicks (n=180, were randomly assigned in six treatment groups. The experiment lasted for 42 days. Treatment groups followed of: Group I was a control. Group II, III, IV, V and VI were supplemented with 0 ppm selenomethionine with 0.5% omega-3 fatty acid, 0 ppm selenomethionine with 1% omega-3 fatty acid, 0.3 ppm selenomethionine with 0% omega-3 fatty acid, 0.3 ppm selenomethionine with 0.5% omega-3 fatty acid and 0.3 ppm selenomethionine with 1% omega-3 fatty acid, respectively. Linseed oil was used as a source of omega-3 fatty acid while sel-plex is used for selenomethionine supplementation. Results: Significant (p<0.05 interaction exist between selenomethionine and omega-3 fatty acid for serum zinc and iron concentration whereas, it was non-significant for serum calcium and copper. Significantly (p<0.05 increased concentration of selenium, zinc, iron and phosphorus was observed in birds fed 0.3 ppm selenomethionine whereas, significantly (p<0.05 increased zinc and iron was observed in birds fed 0.5% omega-3 fatty acid. There was significant (p<0.05 interaction exist between selenomethionine and omega-3 fatty acid for calcium and phosphorus retention percentage. The maximum retention of calcium and phosphorus was recorded in birds supplemented with 0.3 ppm selenomethionine in combination with 0.5% omega-3 fatty acid. There was marked interaction between selenomethionine and omega-3 fatty acid for hemoglobin (Hb, total erythrocytic count, total leukocytic count and platelets (p<0.05 however, it was non-significant for mean corpuscular volume, mean corpuscular Hb, MCH concentration

  13. Multiple inducers of the Drosophila heat shock locus 93D (hsr omega): inducer-specific patterns of the three transcripts

    1989-01-01

    The Drosophila hsr omega locus produces one of the largest and most active heat shock puffs, yet it does not encode a heat shock protein. Instead, this locus produces a distinctive set of three transcripts, all from the same start site. The largest transcript, omega 1, is limited to the nucleus and appears to have a role there. A second nuclear transcript, omega 2, is produced by alternative termination and contains the sequence found in the 5' 20-25% of omega 1 (depending on the Drosophila s...

  14. Search for the decays $J/\\psi\\to\\gamma \\rho \\phi$ and $J/\\psi\\to\\gamma \\rho \\omega$

    Bai, J Z; Cai, X; Chen, H F; Chen, H S; Chen, H X; Chen, J C; Chen, Jin; Chen, Y B; Chu, Y P; Dai, Y S; Diao, L Y; Deng, Z Y; Dong, Q F; Du, S X; Fang, J; Fang, S S; Fu, C D; Gao, C S; Gao, Y N; Gu, S D; Gu, Y T; Guo, Y N; Guo, Z J; Harris, F A; He, K L; He, M; Heng, Y K; Hou, J; Hu, H M; Hu, J H; Hu, T; Huang, G S; Huang, X T; Ji, X B; Jiang, X S; Jiang, X Y; Jiao, J B; Jin, D P; Jin, S; Lai, Y F; Li, G; Li, H B; Li, J; Li, R Y; Li, S M; Li, W D; Li, W G; Li, X L; Li, X N; Li, X Q; Liang, Y F; Liao, H B; Liu, B J; Liu, C X; Liu, F; Fang Liu; Liu, H H; Liu, H M; Liu, J; Liu, J B; Liu, J P; Liu, Jian; Liu, Q; Liu, R G; Liu, Z A; Lou, Y C; Lu, F; Lu, G R; Lu, J G; Luo, C L; Ma, F C; Ma, H L; Ma, L L; Ma, Q M; Mao, Z P; Mo, X H; Nie, J; Olsen, S L; Ping, R G; Qi, N D; Qin, H; Qiu, J F; Ren, Z Y; Rong, G; Ruan, X D; Shan, L Y; Shang, L; Shen, C P; Shen, D L; Shen, X Y; Sheng, H Y; Sun, H S; Sun, S S; Sun, Y Z; Sun, Z J; Tang, X; Tong, G L; Varner, G S; Wang, D Y; Wang, L; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, Y F; Wang, Z; Wang, Z Y; Wang, Zheng; Wei, C L; Wei, D H; Weng, Y; Wu, N; Xia, X M; Xie, X X; Xu, G F; Xu, X P; Xu, Y; Yan, M L; Yang, H X; Yang, Y X; Ye, M H; Ye, Y X; Yu, G W; Yuan, C Z; Yuan, Y; Zang, S L; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C C; Zhang, D H; Zhang, H Q; Zhang, H Y; Zhang, J W; Zhang, J Y; Zhang, S H; Zhang, X Y; Zhang, Yiyun; Zhang, Z X; Zhang, Z P; Zhao, D X; Zhao, J W; Zhao, M G; Zhao, P P; Zhao, W R; Zhao, Z G; Zheng, H Q; Zheng, J P; Zheng, Z P; Zhou, L; Zhu, K J; Zhu, Q M; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, B A; Zhuang, X A; Zou, B S

    2007-01-01

    Using 58 million $J/\\psi$ events collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Positron Collider, the decays $J/\\psi\\to \\gamma\\phi\\rho$ and $J/\\psi\\to \\gamma\\omega\\rho$ are searched for, and upper limits on their branching fractions are reported at the 90% C. L. No clear structures are observed in the $\\gamma \\rho$, $\\gamma \\phi$, or $\\rho \\phi $ mass spectra for $J/\\psi\\to \\gamma\\phi\\rho$ nor in the $\\gamma \\rho$, $\\gamma \\omega$, or $\\rho \\omega$ mass spectra for $J/\\psi\\to \\gamma\\omega\\rho$.

  15. Probing Multi-Strange Dibaryon with Proton-Omega Correlation in High-energy Heavy Ion Collisions

    Morita, Kenji; Etminan, Faisal; Hatsuda, Tetsuo

    2016-01-01

    Two-particle intensity correlation between the proton ($p$) and the Omega-baryon ($\\Omega$) in high-energy heavy ion collisions is studied to unravel the possible spin-2 $p\\Omega$ dibaryon recently suggested by lattice QCD simulations. The ratio of correlation functions between small and large collision systems, $C_{\\rm SL}(Q)$, is proposed to be a new measure to extract the strong $p\\Omega$ interaction without much contamination from the Coulomb attraction. Relevance of this quantity to the experimental observables in heavy-ion collisions is also discussed.

  16. Biochemical and functional effects of prenatal and postnatal omega 3 fatty acid deficiency on retina and brain in rhesus monkeys.

    Neuringer, M.; Connor, W.E.; Lin, D.S.; Barstad, L; Luck, S

    1986-01-01

    Docosahexaenoic acid [22:6 omega 3; 22:6-(4,7,10,13,16,19)] is the major polyunsaturated fatty acid in the photoreceptor membranes of the retina and in cerebral gray matter. It must be obtained either from the diet or by synthesis from other omega 3 fatty acids, chiefly alpha-linolenic acid (18:3 omega 3). We tested the effect of dietary omega 3 fatty acid deprivation during gestation and postnatal development upon the fatty acid composition of the retina and cerebral cortex and upon visual f...

  17. Effect of omega-3 supplementation versus placebo on acylation stimulating protein receptor gene expression in type 2 diabetics

    Farahbakhsh-Farsi, Payam; Djalali, Mahmoud; Fariba KOOHDANI; Saboor-Yaraghi, Ali Akbar; Eshraghian, Mohammad Reza; Javanbakht, Mohammad Hassan; Chamari, Maryam; Abolghassem DJAZAYERY

    2014-01-01

    Background This randomized controlled trial investigated the role of omega-3 supplementation on C5L2 gene expression in type 2 diabetics. Methods Subjects in the omega-3 group received 4 g omega-3 per day and subjects in the placebo group took four capsules of placebo per day for 10 weeks. Gene expression was measured by RT- PCR at the beginning and end of the study. Results The results of this study show depletion in the omega-3 group, but the mean difference between two groups was not signi...

  18. Omega-3 fatty acids plus rosuvastatin improves endothelial function in South Asians with dyslipidemia

    Catalin Mindrescu

    2008-12-01

    Full Text Available Catalin Mindrescu1,2,3, Rakesh P Gupta1,3, Eileen V Hermance1, Mary C DeVoe1, Vikas R Soma1, John T Coppola1,2, Cezar S Staniloae1,21Comprehensive Cardiovascular Center, Saint Vincent’s Hospital Manhattan, New York, NY, USA; 2New York Medical College, Valhalla, NY, USA; 3Rakesh P Gupta and Catalin Mindrescu contributed equally to this article.Background: The present study was undertaken to investigate the effect of statins plus omega-3 polyunsaturated fatty acids (PUFAs on endothelial function and lipid profile in South Asians with dyslipidemia and endothelial dysfunction, a population at high risk for premature coronary artery disease.Methods: Thirty subjects were randomized to rosuvastatin 10 mg and omega-3-PUFAs 4 g or rosuvastatin 10 mg. After 4 weeks, omega-3-PUFAs were removed from the first group and added to subjects in the second group. All subjects underwent baseline, 4-, and 8-week assessment of endothelial function and lipid profile.Results: Compared to baseline, omega-3-PUFAs plus rosuvastatin improved endothelial-dependent vasodilation (EDV: −1.42% to 11.36%, p = 0.001, and endothelial-independent vasodilation (EIV: 3.4% to 17.37%, p = 0.002. These effects were lost when omega-3-PUFAs were removed (EDV: 11.36% to 0.59%, p = 0.003. In the second group, rosuvastatin alone failed to improve both EDV and EIV compared to baseline. However, adding omega-3-PUFAs to rosuvastatin, significantly improved EDV (−0.66% to 14.73%, p = 0.001 and EIV (11.02% to 24.5%, p = 0.001. Addition of omega-3-PUFAs further improved the lipid profile (triglycerides 139 to 91 mg/dl, p = 0.006, low-density lipoprotein cholesterol 116 to 88 mg/dl, p = 0.014.Conclusions: Combined therapy with omega-3-PUFAs and rosuvastatin improves endothelial function in South Asian subjects with dyslipidemia and endothelial dysfunction.Keywords: omega-3 fatty acids, endothelial function, South Asians, dyslipidemia, rosuvastatin

  19. Características fisicoquímicas y composición en ácidos grasos del aceite extraído de semillas de tomate de árbol (Cyphomandra betacea Sendt variedades roja y amarilla

    Linares, Oscar

    2004-12-01

    Full Text Available Tree tomato ( Cyphomandra betacea Sendt is a Solanaceae originating from Peru . In Venezuela , it is cultivated in the Andean region and Aragua state. The objective of this research was to determine some physicochemical characteristics of oil extracted from tree tomato seeds of red (R and yellow (Y varieties. The parameters evaluated were: free oleic acidity (%, R= 1.1; Y= 1.1, saponification number (mg KOH/g, R= 195.3; Y= 196.2, iodine index (cg I2/g, R= 143.3; Y= 142.0, peroxide value (meq O2/kg, R= 1.5; Y= 1.4, unsaponifiable matter (g/kg, R= 19.6; Y= 20.3, refraction index at 40 ºC (R= 1.4720; Y= 1.4710, relative density at 20 ºC (R= 0.9236; Y= 0.9240. The fatty acid composition showed (%: palmitic acid (R= 7.7; Y= 7.4, stearic acid (R= 3.5; Y= 3.1, oleic acid (R= 16.3; Y= 17.7, linoleic acid (R= 69.0; Y= 69.3, and linolenic acid (R= 3.5; Y= 2.5. Tree tomato oil is recommended as a possible nutraceutic agent and salad-oil.El tomate de árbol (Cyphomandra betacea Sendt pertenece a la familia Solanaceae, originaria de Perú. En Venezuela, se cultiva en la región andina y en el estado Aragua. El objetivo de esta investigación fue determinar algunas características físico-químicas del aceite extraído de las semillas de este fruto de las variedades roja (R y amarilla (A, que permitan definir su utilidad como posible materia prima oleaginosa. Los parámetros evaluados fueron: acidez libre oleica (% (R: 1,1 y A: 1,1; índice de saponificación (mg KOH/g (R: 195,3 y A: 196,2; índice de yodo (cg I2/g (R: 143,3 y A: 142,0; índice de peróxidos (meq O2/kg (R: 1,5 y A: 1,4; materia insaponificable (g/kg (R: 19,6 y A: 20,3; índice de refracción a 40 ºC (R: 1,4720 y A: 1,4710 y densidad relativa a 20 ºC (R: 0,9236 y A: 0,9240. La composición de ácidos grasos determinada fue: palmítico (R: 7,7 y A: 7,4; esteárico (R: 3,5 y A: 3,1; oleico (R: 16,3 y A: 17,7; linoleico (R: 69,0 y A: 69,3 y linolénico (R: 3,5 y A: 2,5. La presencia de

  20. Eficacia de los ácidos grasos hiperoxigenados en la prevención de las úlceras por presión Hyperoxygenated fatty acid effectiveness in the prevention of the pressure ulcers

    Alonso López Escribano

    2007-12-01

    Full Text Available Objetivos: Conocer la eficacia de los ácidos grasos hiperoxigenados en la prevención de las úlceras por presión. Determinar el nivel de evidencia del uso de los ácidos grasos hiperoxigenados en la prevención de las úlceras por presión. Material y método: Se realizó una búsqueda bibliográfica en Cochrane library, The Joanna Briggs Institute, Pubmedmedline y Cuiden, siendo solamente seleccionados ensayos clínicos. Para su evaluación se han seguido las recomendaciones del Critical Appraisal Skills Programme (CASPe junto al sistema GRADE para la valoración de la calidad de la evidencia y la fuerza de las recomendaciones. Resultados: En the Cochrane Library no aparece ningún documento, mientras que en The Joanna Briggs Institute aparece un bestpractice donde no se hace ninguna referencia a los AGHO. En el resto de bases encontramos 2 ensayos clínicos aleatorizados, que cumplían los criterios CASPe. En el estudio de Gallart, et al. sobre una muestra de 192 pacientes se observó una incidencia de UPP del 19% en el grupo intervención frente al 35% del grupo placebo (p Objectives: To know the scientific evidence about hyperoxygenated fatty acid effectiveness in the prevention of the pressure ulcers and to evaluate, through the bibliography consulted, their clinical effectiveness. Material and method: There was made a compilation of information in the Cochrane library, The Joanna Briggs Institute, Pubmed-medline and Cuiden. There were only selected clinical trials, for which evaluation it has been followed the recommendations of Critical Apraisal Skill Program together with GRADE system in order to value the quality of the evidence and the strength of the recommendation. Results: No documents have been found in the Cochrane library, whereas in The Joanna Briggs Institute has been found a bestpractice where there is no reference to the hyperoxygenated fatty acid. In the rest of the databases just two randomised clinical trials that