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Search Results: 1 - 10 of 491704 matches for " Marta Lázaro-Sáez "
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Loculated hydrothorax: An unusual complication of hepatic cirrhosis Hidrotórax loculado: una complicación inusual de la cirrosis hepática
Rogger álvaro Bendezú-García,Marta Lázaro-Sáez,álvaro Hernández-Martínez,Gustavo Oliver Patrón-Román
Revista Espa?ola de Enfermedades Digestivas , 2013,
Abstract:
Experiències en l'ús dels gestors de referències bibliogràfiques a la Biblioteca del Campus de Terrassa (BCT) de la UPC
Serrat i Brustenga, Marta,Sunyer i Lázaro, Sílvia
BiD : Textos Universitaris de Biblioteconomia i Documentació , 2005,
Abstract: El present article defineix els gestors de referències bibliogràfiques com a sistemes de gestió documental i presenta, principalment, els programes que la Universitat Politècnica de Catalunya (UPC) ha adquirit recentment: EndNote 8, ProCite 5, Reference Manager 11 i WriteNote 1.6. Se n descriuen les possibles aplicacions i es proposen alguns criteris per a la tria d un d aquests programes en relació amb les necessitats d ús d un usuari o grup d usuaris. S expliquen també les activitats i els serveis que la Biblioteca del Campus de Terrassa desenvolupa amb l objectiu de difondre el coneixement i l ús dels gestors esmentats entre la comunitat universitària que duu a terme tasques de docència, discència i recerca.This article defines bibliographic reference management programmes as document management systems and describes the programmes that the Universitat Politècnica de Catalunya (UPC) has acquired recently: EndNote 8, ProCite 5, Reference Manager 11 and WriteNote 1.6. The authors discuss possible applications and propose criteria for the choice of a programme based on user needs, either individually or as a group. Also covered are the activities and services offered by the Terrassa Campus library for promoting knowledge and use of these products among those university members that teach and perform research.El presente artículo define los gestores de referencias bibliográficas como sistemas de gestión documental y presenta, principalmente, los programas que la Universitat Politècnica de Catalunya (UPC) ha adquirido de manera reciente: EndNote 8, ProCite 5, Reference Manager 11 y WriteNote 1.6. Se describen las posibles aplicaciones y se proponen criterios para seleccionar uno de ellos teniendo en cuenta las necesidades de un usuario o un grupo de usuarios. Se exponen también las actividades y servicios que la Biblioteca del Campus de Terrassa desarrolla con el objetivo de difundir el conocimiento y el uso de los gestores de referencias bibliográficas citados entre la comunidad universitaria dedicada a tareas de docencia, discencia e investigación.
Synergic Effect of Mucuna pruriens var. Utilis (Fabaceae) and Pontoscolex corethrurus (Oligochaeta, Glossoscolecidae) on the Growth of Quercus insignis (Fagaceae) Seedlings, a Native Species of the Mexican Cloud Forest  [PDF]
María L. Avenda?o-Yá?ez, ángel I. Ortiz-Ceballos, Lázaro R. Sánchez-Velásquez, María R. Pineda-López, Jorge A. Meave
Open Journal of Forestry (OJF) , 2014, DOI: 10.4236/ojf.2014.41001
Abstract:

Propagation of native species in local nurseries is an important activity in reforestation and forest restoration programs. A requisite for successful plantation is that nursery produced plants are of a size and quality that allows optimal establishment under field conditions. Manipulation of edaphic processes through the combined use of the earthworm Pontoscolex corethrurus, Mucuna pruriens and inorganic fertilizers may promote faster biomass gain. This study assessed the activity of P. corethrurus, its association with M. pruriens (green manure) and inorganic fertilizers, on the growth of Quercus insignis seedlings under greenhouse conditions. Measured variables were basal diameter, height, biomass and foliar nitrogen content. Growth rates of basal diameter (F = 5.33;

Modeling Nonlinear Power Amplifiers in OFDM Systems from Subsampled Data: A Comparative Study Using Real Measurements
Santamaría Ignacio,Ibá?ez Jesús,Lázaro Marcelino,Pantaleón Carlos
EURASIP Journal on Advances in Signal Processing , 2003,
Abstract: A comparative study among several nonlinear high-power amplifier (HPA) models using real measurements is carried out. The analysis is focused on specific models for wideband OFDM signals, which are known to be very sensitive to nonlinear distortion. Moreover, unlike conventional techniques, which typically use a single-tone test signal and power measurements, in this study the models are fitted using subsampled time-domain data. The in-band and out-of-band (spectral regrowth) performances of the following models are evaluated and compared: Saleh's model, envelope polynomial model (EPM), Volterra model, the multilayer perceptron (MLP) model, and the smoothed piecewise-linear (SPWL) model. The study shows that the SPWL model provides the best in-band characterization of the HPA. On the other hand, the Volterra model provides a good trade-off between model complexity (number of parameters) and performance.
Caracterización del traumatismo renal en pacientes del Hospital Militar Central "Dr. Carlos J. Finlay" Characterization of the renal trauma in patients admitted in the "Dr. Carlos J. Finlay" Central Military Hospital
Basily Valdés Estévez,Tomás Lázaro Rodríguez Collar,René Santiago Borges Sandrino,Ariel Nú?ez Roca
Revista Cubana de Medicina Militar , 2011,
Abstract: INTRODUCCIóN: la mayor parte de los traumatismos renales se consideran menores y requieren tratamiento conservador; los demás, necesitan algún tipo de intervención quirúrgica y los criterios diagnósticos que la deciden constituyen frecuentemente un dilema. OBJETIVO: caracterizar el traumatismo renal en sus aspectos diagnósticos y terapéuticos. MéTODOS: se realizó un estudio retrospectivo descriptivo mediante la revisión de las historias clínicas de los pacientes ingresados con traumatismos renales en el Hospital Militar Central "Dr. Carlos J. Finlay" durante 4 a os (2004-2008), teniendo en cuenta: sexo, edad, agente causal, sintomatología, exámenes complementarios utilizados, tipo de lesión renal, tratamiento aplicado, lesiones asociadas, complicaciones y mortalidad. RESULTADOS: predominó el sexo masculino y el grupo de edad más afectado fue el de 18 a 29 a os. Los accidentes automovilísticos y las caídas de altura se presentaron, por igual, como los agentes causales mayoritarios. El síntoma predominante fue lumbalgia en el 59,2 % de los pacientes. El ultrasonido abdominal resultó el estudio diagnóstico más utilizado. Predominó la lesión renal tipo I y el tratamiento no quirúrgico. Las lesiones asociadas más frecuentes se encontraron en las extremidades y como complicación la sepsis de la herida quirúrgica. Hubo un 5,3 % de mortalidad. CONCLUSIONES: la mayoría de los traumatismos renales fueron leves y conllevaron tratamiento no quirúrgico, lo que hizo factible su manejo al relacionar la sintomatología de cada paciente con los hallazgos del ultrasonido abdominal. INTRODUCTION: most of the renal traumata are considered as minor and require a conservative treatment, some type of surgical intervention and the diagnostic criteria related to this situation frequently are a dilemma. OBJECTIVE: to characterize the renal traumatism in its diagnostic and therapeutic features. METHODS: a descriptive and retrospective study was conducted through a review of medical records of patients admitted with renal traumata in the "Dr. Carlos J. Finlay" Central Military Hospital over four years (2004-2008), taking into account: sex, age, causal agent, symptoms, the complementary examinations used, type of renal lesion, treatment applied, associated lesions , complications and mortality. RESULTS: there was predominance of male sex and the more involved age group was that of 18 to 29 years. Road accidents and falls from heights were equally present as the majority causal agents. The predominant symptom was the lumbago in the 59.2 % of patients. The abdominal ultrasound (US) wa
Papel del túbulo en la vasoconstricción renal inducida por ciclosporina
Cama?o Páez,S.; Lázaro Fernández,A.; Callejas Martínez,R.; Lázaro Manero,J.A.; Castilla Barba,M.; Martín-Vasallo,P.; Martínez Escandell,A.; Tejedor Jorge,A.;
Actas Urológicas Espa?olas , 2008, DOI: 10.4321/S0210-48062008000100013
Abstract: introduction: cyclosporine (cya) has proved to induce cell apoptosis on cultured proximal tubule cells. however, there is no much data about the in vivo functional consequences of this injury or the long time observed cya-induced renal vasoconstriction. material and methods: in a swine model of subacute cya nephrotoxicity (10 mg/ kg. d x 15 days), we performed a right nephrectomy, followed by left renal artery, vein and ureter catheterisation. after inducing water diuresis, three clearance periods of 15 minutes were performed before and after a furosemide 1 mg/kg infusion. plasma and urine electrolytes, blood gas, acid excretion, plasma renin activity and aldosterone concentration, gfr, rpf, rbf, intra-renal vascular resistances, glomerular filtration pressure, distal cl- delivery, water clearance and ttkg were measured or estimated on 7 control and 7 treated animals. right kidney was processed for nakatpase activity and immunostaining. results: treated animals presented detaching proximal cells, luminal blebbing and loss of tight junctions. cortical but not medullar sodium pump was internalised and partially inactive. treated animals showed much lower fractional excretions of na+, with significantly higher distal fractional reabsorption of cl-. distal shift in fluid load resulted in a significant rise in renal o2 consumption, and odifications in the global renal estequiometry of na+ transport/o2 uptake. several consequences followed this situation: preglomerular resistances increased 3 times with only minor changes in postglomerular resistances and renal blood and plasma flow were significantly reduced. furosemide partially reversed these effects. a slight increase in fractional filtration prevented gfr differences to become statistically significant. conclusión: subacute cya treatment even al doses not modifying gfr, may cause proximal tubule na+ transport impairment, resulting in increased rates of distal delivery and absorption of fluid load. renal uptake of o2
La eritropoyetina: de la eritropoyesis a la cardioprotección
Dita Salabert,Liermis; Mendoza Hernández,Ivis; Gómez Baute,Rafael; García López,Elena; de la Cruz Avilés,Lázaro; Nú?ez Quintana,Aramis;
MediSur , 2010,
Abstract: many of the drugs that has shown promise in the treatment of hematologic malignancies and solid tumors, associated with a high potential cardiotoxic. within this group stand anthracyclines, identified as the type of chemotherapy most likely to cause heart damage, short or long term. with the improvement achieved in the survival of patients with these diseases, this adverse event has become a major concern for the scientific community. although many agents have been evaluated as potential cardioprotective therapeutic, clinical data are limited and does not suggest that the use of these agents promotes the survival of patients undergoing cardiotoxic treatments. the identification of erythropoietin receptor in hematopoietic tissues, including the heart, as well as its marked cardioprotective effect during ischemia have led to the hypothesis that erythropoietin may be able to prevent anthracycline-induced cardiomyopathy. addressing this hypothesis is the objective of this work.
Caracterización del traumatismo renal en pacientes del Hospital Militar Central "Dr. Carlos J. Finlay"
Valdés Estévez,Basily; Rodríguez Collar,Tomás Lázaro; Borges Sandrino,René Santiago; Nú?ez Roca,Ariel; Hernández Toboso,Igor;
Revista Cubana de Medicina Militar , 2011,
Abstract: introduction: most of the renal traumata are considered as minor and require a conservative treatment, some type of surgical intervention and the diagnostic criteria related to this situation frequently are a dilemma. objective: to characterize the renal traumatism in its diagnostic and therapeutic features. methods: a descriptive and retrospective study was conducted through a review of medical records of patients admitted with renal traumata in the "dr. carlos j. finlay" central military hospital over four years (2004-2008), taking into account: sex, age, causal agent, symptoms, the complementary examinations used, type of renal lesion, treatment applied, associated lesions , complications and mortality. results: there was predominance of male sex and the more involved age group was that of 18 to 29 years. road accidents and falls from heights were equally present as the majority causal agents. the predominant symptom was the lumbago in the 59.2 % of patients. the abdominal ultrasound (us) was the more used diagnostic study. there was predominance of type i renal lesion and the non-surgical treatment. the more frequent associated lesions were present in the lower extremities and as a complication the surgical wound sepsis. the was a 5.3 % of mortality. conclusions: most of the renal traumata were slights and entailed non-surgical treatment being feasible for its management relating the symptoms of each patient to the abdominal ultrasound findings.
Telomere Length and Genetic Anticipation in Lynch Syndrome
Nuria Seguí, Marta Pineda, Elisabet Guinó, Ester Borràs, Matilde Navarro, Fernando Bellido, Victor Moreno, Conxi Lázaro, Ignacio Blanco, Gabriel Capellá, Laura Valle
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0061286
Abstract: Telomere length variation has been associated with increased risk of several types of tumors, and telomere shortening, with genetic anticipation in a number of genetic diseases including hereditary cancer syndromes. No conclusive studies have been performed for Lynch syndrome, a hereditary colorectal cancer syndrome caused by germline mutations in the DNA mismatch repair genes. Here we evaluate telomere length in Lynch syndrome, both as a cancer risk factor and as a mechanism associated with anticipation in the age of cancer onset observed in successive generations of Lynch syndrome families. Leukocyte telomere length was measured in 244 mismatch repair gene mutation carriers from 96 Lynch syndrome families and in 234 controls using a monochrome multiplex quantitative PCR method. Cancer-affected mutation carriers showed significantly shorter telomeres than cancer-free mutation carriers. In addition, cancer-affected carriers showed the most pronounced shortening of telomere length with age, compared with unaffected carriers. The anticipation in the age of cancer onset observed in successive generations was not associated with telomere shortening, although, interestingly, all mother-son pairs showed telomere shortening. In conclusion, cancer-affected mismatch repair gene mutation carriers have distinct telomere-length pattern and dynamics. However, anticipation in the age of onset is not explained by telomere shortening. Pending further study, our findings suggest that telomere attrition might explain the previously reported dependence of cancer risk on the parent-of-origin of mismatch repair gene mutations.
Supervivencia de la población infantil con tumores del sistema nervioso central
Brossard Alejo,Julio S; Nú?ez Ferrer,Pedro; Rodríguez Herrera,Ernesto; Agustín Antomarchi,Luis M; Romero García,Lázaro I;
MEDISAN , 2011,
Abstract: a descriptive, longitudinal and retrospective study of all the patients with tumors of the central nervous system, admitted to the southern children hospital in santiago de cuba, from 1987 to 2006, in order to analyze the survival of this population whose mean was 45-49 months ± 5,84. it was found that age, tissue aspects, anatomical site, and resection degree, as well as the applied treatments (radiotherapy and chemotherapy), constituted decisive factors to improve the life prognosis of the case material.
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