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Search Results: 1 - 10 of 199926 matches for " E.; Hernández Fernández "
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Hepatopatía alcohólica Alcoholic hepatopathy
E. Sánchez Hernández,J. Fernández Seara
Revista Espa?ola de Enfermedades Digestivas , 2005,
Abstract:
The nature of the orbitally excited charmed-strange mesons through nonleptonic B → D(*)DsJ(*) decays
Segovia J.,Albertus C.,Hernández E.,Fernández F.
EPJ Web of Conferences , 2012, DOI: 10.1051/epjconf/20123705003
Abstract: The Belle Collaboration has recently reported a study of the decays B → Ds1(2536)+Dˉ(*)${ar D^{(*)}}$ and has given also estimates of relevant ratios between branching fractions of decays B → D(*)DsJ(*) providing important information to check the structure of the Ds0*(2317), Ds1(2460) and Ds1(2536) mesons. The disagreement between experimental data and Heavy Quark Symmetry has been used as an indication that Ds0*(2317) and Ds1(2460) mesons could have a more complex structure than the canonical sˉ$ar s$ one. We analyze these ratios within the framework of a constituent quark model, which allows us to incorporate the effects given by finite c-quark mass corrections. Our findings are that while the Ds1(2460) meson could have a sizable non-qqˉ$qar q$ component, the Ds0*(2317) and Ds1(2536) mesons seem to be well described by a pure qqˉ$qar q$ structure.
Caracterización electrofisiológica de un grupo de pacientes con polineurorradiculopatía desmielinizante inflamatoria crónica
Hernández Hernández,Bárbara Aymeé; Fernández Nin,Ana E;
Revista Cubana de Investigaciones Biom??dicas , 2001,
Abstract: a peripheral nerve conduction study was conducted among 12 patients clinically suspected of chronic inflammatory demyelinating polyradiculoneuropahty with a time of evolution from 21 days to 1 year. the median, deep peroneal and sural nerves were studied aimed at contributing to the electrophysiological characterization of the nerve conduction study in this pathology and at demonstrating the usefulness of new variables, such as the percentage of the falling of amplitude, area and dispersion in the electrophysiological diagnosis. it was proved that the most sensitive variables in this pathology are: latency at the proximal and distal beginning, proximal duration, duration of the proximal negative phase, nerve conduction velocity at the peak, percentage of the decrease of amplitude, area and dispersion in the motor study, latency at the beginning and at the peak, duration, and nerve conduction velocity at the beginning and at the peak in the sensitive study that showed the degree of alteration
Caracterización electrofisiológica de un grupo de pacientes con polineurorradiculopatía desmielinizante inflamatoria crónica
Bárbara Aymeé Hernández Hernández,Ana E Fernández Nin
Revista Cubana de Investigaciones Biom??dicas , 2001,
Abstract: Se realizó estudio de conducción nerviosa periférica a 12 pacientes con sospecha clínica de polineurorradiculopatía desmielinizante inflamatoria crónica, con tiempo de evolución entre 21 d y 1 a o. Se estudiaron los nervios medianos, peroneos profundos, y surales, con el objetivo de contribuir a la caracterización electrofisiológica del estudio de conducción nerviosa en esta patología y demostrar la utilidad de nuevas variables como el porcentaje de caída de amplitud, área y dispersión en el diagnóstico electrofisiológico. Se demostró que las variables más sensibles en esta patología son: la latencia al inicio tanto proximal como distal, latencia al pico proximal y distal, duración proximal, duración de la fase negativa proximal, velocidad de conducción nerviosa al pico, porcentaje de caída de amplitud, de área y dispersión en el estudio motor, la latencia al inicio y al pico, duración, velocidad de conducción nerviosa al inicio y al pico en el estudio sensitivo que evidenció su grado de alteración A peripheral nerve conduction study was conducted among 12 patients clinically suspected of chronic inflammatory demyelinating polyradiculoneuropahty with a time of evolution from 21 days to 1 year. The median, deep peroneal and sural nerves were studied aimed at contributing to the electrophysiological characterization of the nerve conduction study in this pathology and at demonstrating the usefulness of new variables, such as the percentage of the falling of amplitude, area and dispersion in the electrophysiological diagnosis. It was proved that the most sensitive variables in this pathology are: latency at the proximal and distal beginning, proximal duration, duration of the proximal negative phase, nerve conduction velocity at the peak, percentage of the decrease of amplitude, area and dispersion in the motor study, latency at the beginning and at the peak, duration, and nerve conduction velocity at the beginning and at the peak in the sensitive study that showed the degree of alteration
Use of IVF and ET in Mexican Criollo Sheep (Ovis aries): Immediate and Delayed Embryo Transfers  [PDF]
José Ernesto Hernández Pichardo, Francisco Ortiz, José Luis Rodríguez, Yvonne Ducolomb, Filiberto Fernández Reyes, Miguel Betancourt, Eduardo Casas, Yvonne Heuze, Michael E. Kjelland, Salvador Romo
Advances in Reproductive Sciences (ARSci) , 2016, DOI: 10.4236/arsci.2016.41002
Abstract: There is little information in the scientific literature concerning sheep pregnancy and lambing success with regard to the timeframe from when in vitro produced embryos are transported to the designated location for embryo transfer (ET). The aim of this study was to transfer in vitro produced embryos under two different conditions that could typically occur using the aforementioned assisted reproductive techniques (ARTs). Abattoir ovaries were used to procure oocytes for in vitro embryo production and subsequent transfer to synchronized ewes. The study consisted of two experiments: Experiment 1 (Exp1)—embryos taken from the laboratory to a nearby surgical room for immediate ET, and Experiment 2 (Exp2)—ET after 5 hours (h) of transport to a rural farm. Lambing in relation to detected pregnancies, births compared to pregnancies, and the proportion of twin offspring were all higher in Exp2. Notably, in both Exp1 and Exp2, there was not a significant difference (P > 0.05) between the number of embryos transferred, i.e., 3 versus 4, respectively, and the number of ewes that underwent parturition in each group. Also, in both experiments there was not a significant difference (P > 0.05) in the number of ewes that underwent parturition based on the number (i.e., ≥1) of corpora lutea present. The results of the present study demonstrate the importance of evaluating different conditions when applying ARTs, as there are many variables that can influence the outcome. Importantly, Exp2 results show that ovine ET in places located far away from the embryo production site can be useful and successful provided that embryo transport, ET, and recipient conditions are adequate.
Valor pronóstico de las apolipoproteínas A y B en la evolución de los pacientes con enfermedad renal crónica avanzada prediálisis
Cerezo Arias,I.; Fernández,N.; Romero,B.; Fernández-Carbonero,E.; Hernández-Gallego,R.; Caravaca,F.;
Nefrología (Madrid) , 2009,
Abstract: dyslipidaemia is a well-established risk factor for cardiovascular diseases in the general population. however, this association is not observed in chronic kidney disease (ckd) patients. this study examines the association between lipid levels, including apolipoproteins a-i and b concentrations, and all-cause mortality or the development of new cardiovascular events in advanced ckd patients. this observational prospective historical study included 331 patients with ckd stage 4 or 5 not yet on dialysis. in addition to conventional clinical and biochemical data, total cholesterol, triglycerides, hdl, ldl, apolipoprotein a-i (apo a) and b (apo b) plasma concentrations were measured. cox proportional hazard models were adjusted for age, sex, comorbidity index, residual renal function, serum albumin, c-reactive protein levels, and treatment with statins. the median follow-up time was 985 days, and during this period 105 patients died and 54 patients had a new cardiovascular event. in fully-adjusted fixed-covariate cox models, the hazard ratio for each 10mg/dl increase of apo a concentration was 0.915 (c.i. 95% 0.844 to 0.992; p = 0,031). patients with an apo a/apo b ratio in the upper tertile (i.e. >1.42) had a better survival rate than the rest of the study patients (hazard ratio = 0.592, c.i. 95% 0.368 to 0.953, p < 0.05). none of the study lipid parameters were associated with new cardiovascular events in the adjusted models. in conclusion, apo a concentrations and high apo a/apo b ratios added independent predictive information about survival of ckd patients not yet on dialysis.
Capacidad pronóstica de los signos de herniación cerebral en pacientes con afectación neurológica estructural Prognostic capacity of brain herniation signs in patients with structural neurological injury
MJ Chavero-Magro,R Rivera-Fernández,H Busquier-Hernández,E Fernández-Mondéjar
Medicina Intensiva , 2007,
Abstract: Objetivo. Analizar en los pacientes con afectación neurológica estructural si los sistemas de predicción de mortalidad habitualmente usados (APACHE y SAPS) pueden ser complementados con los hallazgos de herniación cerebral encontrados en la tomografía computarizada (TC) craneal. Dise o. Estudio prospectivo de cohortes. ámbito. Unidad de Cuidados Intensivos (UCI) de Traumatología de un hospital universitario. Pacientes. Ciento cincuenta y cinco pacientes ingresados en UCI durante el 2003 con traumatismo craneoencefálico (TCE) o accidente cerebrovascular agudo (ACVA). Variables de interés principales. Se recogió información sobre la edad, el diagnóstico, la mortalidad, los hallazgos en la TC craneal al ingreso, APACHE II, APACHE III y SAPS II. Resultados. La edad fue de 47,8 ± 19,4 a os, el APACHE II 17,1 ± 7,2 puntos, el SAPS II 43,7 ± 17,7 puntos y el APACHE III de 55,8 ± 29,7 puntos. La mortalidad hospitalaria fue del 36% y la predicha por el SAPS II fue del 38%, por el APACHE II 30% y por el APACHE III 36%. Los 56 pacientes que fallecieron presentaban mayor desviación de la línea media en la TC craneal que los supervivientes: 4,2 ± 5,5 frente a 1,7 ± 3,2 mm (p = 0,002) y mayor gravedad evaluada con el SAPS II, APACHE II y APACHE III. La mortalidad fue significativamente mayor en los pacientes con herniación subfalcial (61% frente a 30%, p < 0,001). En el análisis multivariante con regresión logística se encontró que la mortalidad hospitalaria se asoció con la probabilidad de fallecer según el APACHE III (OR 1,07; IC 95%: 1,05-1,09) y con la presencia de herniación subfalcial (OR 3,15; IC 95%: 1,07-9,25). Conclusiones. En los pacientes críticos con afectación estructural neurológica, la presencia de signos de herniación subfalcial en la TC craneal complementan la información pronóstica de los índices de gravedad normalmente utilizados. Objective. To determine whether the usual mortality prediction systems (APACHE and SAPS) can be complemented by cranial computed tomography (CT) brain herniation findings in patients with structural neurological involvement. Design. Prospective cohort study. Setting. Trauma ICU in university hospital. Patients. One hundred and fifty five patients admitted to ICU in 2003 with cranial trauma or acute stroke. Main variables of interest. Data were collected on age, diagnosis, mortality, admission cranial CT findings and on APACHE II, APACHE III and SAPS II scores. Results. Mean age was 47.8 ± 19.4 years; APACHE II, 17.1 ± 7.2 points; SAPS II, 43.7 ± 17.7 points; and APACHE III, 55.8 ± 29.7 points. Hospital mortality was 36%
Estado actual del ultrasonido de alta frecuencia (HIFU) en el tratamiento del adenocarcinoma prostático
Lledó García,E.; Jara Rascón,J.; Herranz Amo,F.; Hernández Fernández,C.;
Actas Urológicas Espa?olas , 2007, DOI: 10.4321/S0210-48062007000600010
Abstract: objective. to evaluate the current state of high intensity focused ultrasound as therapeutical option of prostatic carcinoma (pca) methods. we completed an extense review of urologic literature on the role of hifu on the treatment of pca. results. this technique is nowadays usually being indicated in europe as treatment of many cases of either primary or relapsed pca after radiotherapy. although some reports suggest that hifu is very effective as treatment for low and medium risk localized pca patients, no randomized series comparing this technique with conventional therapies have been presented yet. great disparity in criteria to define free-disease survival is detected, which make difficult the interpretation of results. conclusions. experience of some groups in hifu is highly promising. local tumour destruction is evident both in primary and relapsed pca cases. to make conclusions in the long-term, controlled-randomized trials must be designed, with follow-up to measure benefits in global survival and quality of live. comparisons must be completed with conventional techniques, and a uniform definition of disease free-survival is necessary.
Plant nutrition, foliar standards, chlorophyll activity and soil nutrient status of two cultivars of Leucospermum cordifolium (Proteaceae)
álvarez,Carlos E; Fernández-Falcón,Marino; Hernández,M. Mercedes;
Ciencia e investigación agraria , 2012, DOI: 10.4067/S0718-16202012000100008
Abstract: two cultivars ('succession ii' and 'tango') of leucospermum cordifolium were studied over three years in commercial plantations with optimum yields located on subtropical la palma island (canarian archipelago). four foliar samplings were taken per year to determine the evolution of the n, p, and k contents over time and to determine the optimal month for foliar standard sampling. foliar chlorophyll activity and the foliar standard concentrations of macro- and micronutrients were determined. soil samples were also taken. both cultivars developed well in soils with acid and slightly acid ph, low and high organic matter content, and in some cases, high available p concentrations, though proteaceae is generally considered p sensitive. chlorophyll activity correlated neither with foliar nutrient levels nor with leaf greenness. the foliar n content reached a maximum of 17.0 g kg-1 in the cultivar 'succession ii' and 17.2 g kg-1 in 'tango', whereas the maximum p and k levels were lower in 'tango' than in 'succession ii'. the greatest stability of the concentrations of these nutrients occurred in september; therefore, this month was chosen for performing foliar standard sampling. the standard ranges of n, k, ca and mg were higher in 'succession ii', while fe, mn, and zn were higher in 'tango'. the p and cu standard ranges were similar in both cultivars.
Efectos de la alcalosis metabólica inducida por la dieta en el rendimiento anaeróbico de alta intensidad
Ríos Enríquez,O.; Guerra-Hernández,E.; Feriche Fernández-Castanys,B.;
Nutrición Hospitalaria , 2010,
Abstract: objectives: the purpose of this study is to compare the effects of two diets, one acidifier and the other alkalizer, on the sport performance in an extreme anaerobic stress test. methods: for that purpose thirteen individuals were subjected to two such diets in a crossed test for two and a half days. immediately after, they were tested in a maximum lactic anaerobic stress test of stable state to exhaustion on an ergo-cycle at 250w. results: the assessment of the diets yielded a significant difference in the estimated nae (net acid excretion) and a caloric deficit of 54% on the alkalizer diet, mainly due to a reduced ingestion of carbohydrates. the urinary ph increased by 83% for the individuals subjected to the alkalizer diet, 77% of those subjects experienced an increase in their blood lactate level during the test. the time to exhaustion while on the test improved or remained in 58% of the subjects, being the females who reacted best to the diet in 83% of the cases. conclusions: there seems to be evidence of improvement in extreme anaerobic stress test to exhaustion from 60s to 2 mins of duration after consuming a diet with alkalizer potential.
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