AHORRO DE ENERGÍA ELÉCTRICA POR REDUCCIÓN DE CAPACIDAD OCIOSA (Original)

Inside the electric power system some electric distribution transformers are lightly loaded most of the time, this alone it is translated in the worsening of the power factor and therefore the increment of the electric power losses. In this paper is carried out the analysis of three banks of transformers as for the state of load of these, levels of losses that cause and as a result of the same one the substitution of the same ones is evaluated by others of smaller capacity.Dentro de los sistemas eléctricos de potencia, algunos transformadores eléctricos de distribución están ligeramente cargados parte del tiempo. Esto solo se traduce en el empeoramiento del factor de potencia y, por tanto, del incremento de las pérdidas de energía eléctrica. En el presente trabajo se realiza el análisis de tres bancos de transformadores en cuanto al estado de carga de estos, niveles de pérdidas de energía eléctrica que ocasionan y  se evalúa la sustitución  por otros de menor capacidad

Orden y cronología de brote en dentición permanente

Introduction: there are not many references where the different somatic growth events can be associated. The eruption of teeth and their condition have not been taken into account as a factor to assess the growth of the individuals. Objective: to characterize the eruption and chronology of permanent teeth.Material and method: an observational, descriptive and cross-sectional study was conducted comprising 209 students (target group and sample coincided) from 5 to 12 years old enrolled at “Pablo de la Torriente Brau” Elementary School Pinar del Rio municipality, during the period of May-June 2012. Data were collected regarding the age of permanent teeth eruption, to carry it out an oral examination was performed and data were compiled in a form. The work was developed considering previous knowledge and consent of the direction of the institution.Results: changes regarding the conventional international dates accepted were evident, with an average early eruption of one year to each tooth and a similar chronology to the one established internationally. The end results were purely analyzed in percentage terms. Conclusions: it was proved that the eruption of permanent teeth occurred up to a year early for each permanent tooth, and in some of them, such as the lateral incisive, up to a year and half regarding the conventional values.Introducción: existen pocas referencias donde se asocien los distintos eventos del crecimiento somático. La erupción dentaria y el estado de la dentición no se han tomado en cuenta como un parámetro a evaluar en el crecimiento de los individuos.Objetivo: caracterizar el brote y cronología de la dentición permanente.Material y método: se realizó un estudio observacional, descriptivo, de corte transversal, en 209 estudiantes en el rango de edades comprendidas entre 5 y 12 años de edad de la Escuela Primaria “Pablo de la Torriente Brau” del municipio Pinar del Río, que constituyen el universo de nuestro estudio, coincidente con la muestra, en el periodo comprendido de enero a febrero de 2012. Se recolectaron los datos acerca de la edad de brote dentario de la dentición permanente; para lo cual se realizó un examen bucal y los datos fueron recopilados en un formulario creado al efecto.El trabajo se desarrolló con previo conocimiento y aprobación por parte de la dirección de la institución.Resultados: se evidenciaron cambios en las fechas convencionales reconocidas internacionalmente con un adelanto promedio de un año para cada diente y una cronología similar a la establecida internacionalmente. Los resultados fueron analizados puramente en términos porcentuales.  Conclusiones: se comprobó  hasta un año de adelanto en la edad de brote de cada diente permanente, y en algunos como el incisivo lateral hasta un año y medio con respecto a los valores convencionales

Growth traits and carcass weights of purebred Brahman and F1 Brahman x Bos taurus bulls raised and fattened semi-intensively on improved savannah

To explore differences in growth traits, carcass weights and dressings percentages under improved, savannah-rearing conditions, five breed groups (purebred Brahman, PUREBREDS; F1 Angus, F1ANG; F1 Chianina, F1CHIA; F1 Romosinuano, F1ROMO; and F1 Simmental, F1SIM) of 10 contemporaneous bull calves each, were raised and fattened semi-intensively as a whole grazing lot. Data were analyzed for variance-covariance, using initial liveweight at each growth period, as a covariate. Adjusted daily gains (ADG) from birth to weaning for F1ANG, F1CHIA and F1ROMO outweighed (> 77g/d; P<.05) that of PUREBREDS. From weaning time up to 18m of age, F1ROMO and F1SIM outweighed PUREBREDS in ADG (> 62g/d; P<.05). F1 bulls were heavier than PUREBREDS at weaning and 18m, showing, espectively, differences of 20.4kg (11.5%; P=.10) and 20.6kg (9.5%; P=.0001). From 18m up to initiation of the fattening period (FATINITIATION, circa 23m of age), PUREBREDS and F1ANG surpassed in ADG (> 80g/d; P<.05) the remaining groups. Nevertheless, breed groups did not vary significantly (P>.05) in FATINITIATION weights, fattening rates, and time of feeding. At the endpoint used herein, PUREBREDS and F1 bulls did not differ in slaughter age, carcass weight or dressing percentage (P> .05). Under improved savannah feeding and management conditions, as described for this particular operation, crossbreeding allows product diversification of traditional Brahman cow-calf production systems by raising and/or fattening F1 young (<28m of age) slaughter bulls

NR 27. Strategic nutritional management technologies for enhancing forage beef production in the tropical venezuelan llanos

The response in growth and carcass quality of 102 intact and 20 castrate males grazing dry season followed by irrigated dry season native (Lambedora) improved (Tanner grass) forages to selected strategic technologies was investigated. The key is to develop strategies to deliver these technologies in ways that will enhance fermentative rate and efficiency to allow greater intake and animal productivity. Nutritional strategies included 1) a macro/tracemineral supplement (MIN) or 2) a strategic (STRAT) supplement including key minerals, a slowly degrading protein source (feather meal) to provide a continuous nitrogen release, ionophore (Salocin), degradable fiber (rice polishings), and capsulized fat (whole cottonseed). Cattle initially were intensively grazed on flood and pump irrigated pastures until target weight (average 495 kg) and condition were achieved. Cattle were implanted initially with zeranol (72 mg) or Revalor followed by a second implant of zeranol (72 mg). Mineral supplement for MIN cattle was provided continuously and STRAT (comprised of feather meal, whole cottonseed, molasses, rice polishings, mineral mix and Salocin at 10, 0, 5, 77.9, 7, and 1 % for d 0-60 and 10, 49.9, 5, 28, 7, and 1 % for d 61-182), was hand-fed at 1 kg/hd daily. Total MIN or STRAT consumption was 15.3 vs. 172 kg/hd or 84 vs. 945 g/d through d 182. At 182 d, the first group was selected for slaughter and supplementation with STRAT was ceased. At this point, the MIN and STRAT cattle averaged 459.4 and 487.2 kg and differed (P<.001) in weight. Average daily gain to 182 d averaged 676 vs. 818 g (P<.001), for a 142 g/d response. Further, the STRAT supplement enhanced (P<.001) dressing percentage from 57.6 to 59.0 % at termination, and adjustment of d 182 response to a common dressing percentage yielded a 32.6 kg response in weight or 179 g response in daily gain

Restructuring of the "Macaronesia" biogeografic unit: a marine multi-taxon biogeographical approach

The Azores, Madeira, Selvagens, Canary Islands and Cabo Verde are commonly united under the term “Macaronesia”. This study investigates the coherency and validity of Macaronesia as a biogeographic unit using six marine groups with very different dispersal abilities: coastal fishes, echinoderms, gastropod molluscs, brachyuran decapod crustaceans, polychaete annelids, and macroalgae. We found no support for the current concept of Macaronesia as a coherent marine biogeographic unit. All marine groups studied suggest the exclusion of Cabo Verde from the remaining Macaronesian archipelagos and thus, Cabo Verde should be given the status of a biogeographic subprovince within the West African Transition province. We propose to redefine the Lusitanian biogeographical province, in which we include four ecoregions: the South European Atlantic Shelf, the Saharan Upwelling, the Azores, and a new ecoregion herein named Webbnesia, which comprises the archipelagos of Madeira, Selvagens and the Canary Islandsinfo:eu-repo/semantics/publishedVersio

Legado del humanismo de Ernesto (Che) Guevara como médico y revolucionario

The commander Dr. Ernesto Guevara de la Serna: young student, excellent doctor that knows how to locate the human being`s values above a promissory future as professional of the medicine and scientific. Dissimilar authors that study the momentous influence of histhinking and work, as much in America as in Cuba, they present this revolutionary doctor's humanist figure with the use of the most valuable storiesof his life in several parts of the world.It was carried out a wide bibliographical revision in printed books and in the databases of available scientific bibliographies (BVS-BIREME, PubMed, LILACS, SciELO, EBSCO) and in Academic Google with the objective of demonstrating the legacy of the humanist thinking as doctor and revolutionary of Ernesto Guevara de la Serna. It was demonstrated that the Che`s humanism was an inherent feature in his personality and that it is a paradigm for the current and future generations that it impels to the human improvement, to be more revolutionary everyday.El Comandante Dr. Ernesto Guevara de la Serna, joven estudiante y excelente médico, supo ubicar los valores del ser humano por encima de un promisorio futuro como científico y profesional de la medicina. Disímiles autores que estudian la trascendental influencia de su pensamiento y su obra, tanto en América como en Cuba, presentan la figura humanista de este médico revolucionario con muestras de las más valiosas historias de su vida en varias partes del mundo. Se realizó una amplia revisión bibliográfica en libros impresos y en las bases de datos de bibliografías científicas  disponibles  (BVS-BIREME, PubMed, LILACS, SciELO, EBSCO) y en Google Académico con el objetivo de profundizar en el legado del pensamiento humanista como médico y revolucionario de Ernesto Guevara de la Serna. Se demostró que el humanismo del Che fue un rasgo inherente en su personalidad y que es un paradigma  para las actuales y futuras generaciones, que impulsa al mejoramiento humano para ser cada día más revolucionarios

Legado del humanismo de Ernesto (Che) Guevara como médico y revolucionario

The commander Dr. Ernesto Guevara de la Serna: young student, excellent doctor that knows how to locate the human being`s values above a promissory future as professional of the medicine and scientific. Dissimilar authors that study the momentous influence of histhinking and work, as much in America as in Cuba, they present this revolutionary doctor's humanist figure with the use of the most valuable storiesof his life in several parts of the world.It was carried out a wide bibliographical revision in printed books and in the databases of available scientific bibliographies (BVS-BIREME, PubMed, LILACS, SciELO, EBSCO) and in Academic Google with the objective of demonstrating the legacy of the humanist thinking as doctor and revolutionary of Ernesto Guevara de la Serna. It was demonstrated that the Che`s humanism was an inherent feature in his personality and that it is a paradigm for the current and future generations that it impels to the human improvement, to be more revolutionary everyday.El Comandante Dr. Ernesto Guevara de la Serna, joven estudiante y excelente médico, supo ubicar los valores del ser humano por encima de un promisorio futuro como científico y profesional de la medicina. Disímiles autores que estudian la trascendental influencia de su pensamiento y su obra, tanto en América como en Cuba, presentan la figura humanista de este médico revolucionario con muestras de las más valiosas historias de su vida en varias partes del mundo. Se realizó una amplia revisión bibliográfica en libros impresos y en las bases de datos de bibliografías científicas  disponibles  (BVS-BIREME, PubMed, LILACS, SciELO, EBSCO) y en Google Académico con el objetivo de profundizar en el legado del pensamiento humanista como médico y revolucionario de Ernesto Guevara de la Serna. Se demostró que el humanismo del Che fue un rasgo inherente en su personalidad y que es un paradigma  para las actuales y futuras generaciones, que impulsa al mejoramiento humano para ser cada día más revolucionarios

Low-Cost Dielectric Flat Lens for Near-Field Focusing

IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (2018, Boston

Low-count monoclonal B-cell lymphocytosis persists after seven years of follow up and is associated with a poorer outcome

[EN]Low-count monoclonal B-cell lymphocytosis is defined by the presence of very low numbers of circulating clonal B cells, usually phenotypically similar to chronic lymphocytic leukemia cells, whose biological and clinical significance remains elusive. Herein, we re-evaluated 65/91 low-count monoclonal B-cell lymphocytosis cases (54 chronic lymphocytic leukemia-like and 11 non-chronic lymphocytic leukemialike) followed-up for a median of seven years, using high-sensitivity flow cytometry and interphase fluorescence in situ hybridization. Overall, the clone size significantly increased in 69% of low-count monoclonal B-cell lymphocytosis cases, but only one subject progressed to high-count monoclonal B-cell lymphocytosis. In parallel, the frequency of cytogenetic alterations increased over time (32% vs. 61% of cases, respectively). The absolute number of the major T-cell and natural killer cell populations also increased, but only among chronic lymphocytic leukemia-like cases with increased clone size vs. age- and sex-matched controls. Although progression to chronic lymphocytic leukemia was not observed, the overall survival of low-count monoclonal B-cell lymphocytosis individuals was significantly reduced vs. non-monoclonal Bcell lymphocytosis controls (P=0.03) plus the general population from the same region (P≤0.001), particularly among females (P=0.01); infection and cancer were the main causes of death in low-count monoclonal B-cell lymphocytosis. In summary, despite the fact that mid-term progression from low-count monoclonal B-cell lymphocytosis to high-count monoclonal B-cell lymphocytosis and chronic lymphocytic leukemia appears to be unlikely, these clones persist at increased numbers, usually carrying more genetic alterations, and might thus be a marker of an impaired immune system indirectly associated with a poorer outcome, particularly among females