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Search Results: 1 - 10 of 11149 matches for " Fernanda Luz Casalech "
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Indicators for estimating the total apparent digestibility in horses Indicadores para estimativa da digestibilidade aparente total em equinos
Alexandre Augusto de Oliveira Gobesso,Sílvio Couto Ramos,Fernanda Luz Casalech,Ana Maria de Freitas Oliveira Moreira
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: The objective of this study to evaluate various indicators to estimate the total nutrient digestibility in horses. We used four adult mares, breed, grouped in a 4 x 4 Latin square balanced fed diets containing equal parts of hay Tifton 85 (Cynodon sp) and concentrated experimental containing corn subjected to four processes: a diet containing ground corn ; flaked corn diet 2, 3 rolled corn, and 4 extruded corn. The weighting coefficient of digestibility of nutrients by the indicators was done through the bias. The accuracy and precision were determined by comparing the predicted and observed data, and the robustness of the biases by comparing with other factors studied. The chromic oxide methods showed similar values of apparent digestibility of nutrients when compared to the total collection method. We observed higher accuracy for the acid detergent lignin as compared to the other indicators tested. However, the acid detergent lignin underestimated the digestibility of nutrients when compared to the total collection. The acid detergent insoluble ash overestimated the digestibility of nutrients when compared to the total collection. The chromic oxide is presented as a better indicator for estimating the total apparent digestibility in horses due to its higher accuracy among the markers evaluated. Objetivou-se neste estudo avaliar diferentes indicadores para estimativa das digestibilidades aparente total em equinos. Foram utilizadas quatro éguas adultas, sem ra a definida, agrupadas em um quadrado latino 4 x 4 balanceado, alimentadas com dietas que continham partes iguais de feno da gramínea Tifton 85 (Cynodon sp) e concentrado experimental que continha milho submetido a quatro processamentos: dieta um milho triturado; dieta dois milho floculado; dieta três milho laminado e dieta quatro milho extrusado. A pondera o dos coeficientes de digestibilidade dos nutrientes pelos indicadores foi efetuada por meio do viés. A acurácia e a precis o foram determinadas pela compara o entre os dados preditos e observados, e a robustez pela compara o dos vieses com outros fatores estudados. O uso do indicador óxido cr mico apontou valores semelhantes de coeficientes de digestibilidade dos nutrientes quando comparado ao método de coleta total. Foi observada maior acurácia para os valores de lignina em detergente ácido em compara o aos demais indicadores testados. Entretanto, esta medida subestimou os coeficientes de digestibilidade dos nutrientes quando comparada à coleta total de fezes. A medida cinza insolúvel em detergente ácido superestimou os coeficientes de dig
La Sociedad Mexicana de Geografía y Estadística, la organización de la ciencia, la institucionalización de la Geografía y la construcción del país en el siglo XIX
Luz Fernanda Azuela Bernal
Investigaciones geográficas , 2003,
Abstract: La Sociedad Mexicana de Geografía y Estadística (SMGEJ fue la primera entidad que organizó la investigación científica en México y también el primer cuerpo institucional para el desarrollo y la práctica de la geografía. Al cumplirse 170 a os de su fundación como Instituto Nacional de Geografía y Estadística, este ensayo reflexiona sobre el papel que desempe ó la SMGE en la organización de la ciencia y la edificación del país en el siglo XIX.
Report of the first case of myxoid liposarcoma in Colombia: a rare tumor
Sua,Luz Fernanda; Silva,Nhora María;
Colombia Médica , 2010,
Abstract: introduction: primary esophageal myxoid liposarcoma is exceedingly rare. sarcomas make up 1% of esophageal malignant tumors. there are only five (5) cases reported with this histological variant (myxoid) in previous literature. in colombia, this is the first case reported and the sixth in the world. objective: to report the first case in colombia of myxoid liposarcoma of the esophagus with clinical, radiographic images, histology, surgical and to describe difficulties in the diagnosis. methodology: we reviewed the clinical history of a 28-year old male patient. he was admitted to hospital universitario del valle in cali, colombia with a clinical history of dysphagia, weight loss, and excessive salivation. the initial examination (esophagogram, cervical cat scan and endoscopy) demonstrated a mass that was reported as a fibrovascular polyp. the finding of the pathological diagnosis was myxoid liposarcoma. conclusions: the rarity of this condition recommends report of its detailed description. the myxoid liposarcoma of the esophagus can be diagnosed if a patient has a history of a slow-growing esophageal mass with a low tumor density in computed tomography in combination with surgical resection and histological examination.
La ciencia en México en el siglo XIX: una aproximación historiográfica
Azuela, Luz Fernanda,Guevara Fefer, Rafael
Asclepio : Revista de Historia de la Medicina y de la Ciencia , 1998,
Abstract: Historical works on XlXth century science in Mexico have developed on different interpretational paths and perspectives. In the last decade, the comprehension of the period has begun to change, as a result of professional research in the history of science. Long periods and subjects that were seldomly considered in the past, have been integrated, framing up a new image of mexican science in the last century. This article sums up the main changes we observed in the subjects, interpretations and methods that have been present in historical explanations of mexican science. To accomplish this purpose, we include an extensive review of the main works published between 1895 and 1996. La historiografía ha desarrollado diferentes líneas de trabajo y distintas perspectivas para analizar el estudio de la ciencia hecha en México durante el siglo XIX. En la última década la comprensión de ese período ha experimentado un cambio como resultado de la profesionalización de la investigación en historia de la ciencia. Fases temporales y problemas que no habían suscitado atención en el pasado han sido ahora estudiados contribuyendo su revalorización a ofrecer una nueva imagen de la ciencia mexicana de ese período histórico. Este artículo recapitula los principales cambios que los autores han observado en los temas, interpretaciones y métodos que se han usado en las explicaciones históricas de la ciencia mexicana del siglo XIX. Para llevar a cabo este objetivo se efectúa un detenido repaso de las principales obras publicadas entre 1895 y 1996.
Geoturismo aliado a painéis interpretativos: uma proposta para o Buraco do Padre, Ponta Grossa (PR)
Fernanda Gomes da Luz,Jasmine Cardozo Moreira
Revista Nordestina de Ecoturismo , 2010, DOI: 10.6008/ess1983-8344.2010.002.0002
Abstract: O segmento de geoturismo, realizado em áreas naturais, é uma das modalidades que surge como uma forma de contraposi o ao “turismo de massa” e também como forma de minimizar os impactos negativos ocasionados pelo homem ao realizar o turismo em ambientes naturais de maneira inadequada. A Interpreta o Ambiental é considerada como parte da Educa o Ambiental e seu papel fundamental é de estimular o ser humano a refletir a respeito do meio ambiente em que está visitando. Para que a Interpreta o Ambiental possa ser realizada em algum local, esta depende dos meios interpretativos, sendo eles: guiados (personalizados) e autoguiados (n o personalizados). Os painéis interpretativos s o meios n o personalizados (ou seja, n o utilizam pessoas diretamente) bastante utilizados na Interpreta o Ambiental, pois est o disponíveis a qualquer horário do dia. O Buraco do Padre é um atrativo turístico natural localizado no Município de Ponta Grossa a aproximadamente 24 km de distancia do centro da cidade. Pelo fato do Buraco do Padre possuir diversas características de cunho geológico ser um local em que já vem ocorrendo visita o turística, possuindo infra-estrutura inadequada no que diz respeito à Interpreta o Ambiental, é que o objetivo desta pesquisa foi estudar o local, destacar seus aspectos da geodiversidade e assim sugerir o segmento de geoturismo e painéis interpretativos para o local. A metodologia utilizada nesta pesquisa é qualitativa, que incluiu pesquisas bibliográficas e pesquisas in loco. Pode-se destacar as principais características do local, e s o sugeridos os painéis e a localiza o para cada um deles. Assim, s o propostos cinco painéis interpretativos e cada um deles abordará um tema em específico, sendo que três deles procuram explorar a quest o dos aspectos da geodiverdidade, transmitindo informa es de maneira simplificada a respeito das características do local para que os visitantes possam compreender melhor o ambiente em que est o inseridos.
Report of the first case of myxoid liposarcoma in Colombia: a rare tumor
Luz Fernanda Sua,Nhora María Silva
Colombia Médica , 2010,
Abstract: Introduction: Primary esophageal myxoid liposarcoma is exceedingly rare. Sarcomas make up 1% of esophageal malignant tumors. There are only five (5) cases reported with this histological variant (myxoid) in previous literature. In Colombia, this is the first case reported and the sixth in the world.Objective: To report the first case in Colombia of myxoid liposarcoma of the esophagus with clinical, radiographic images, histology, surgical and to describe difficulties in the diagnosis.Methodology: We reviewed the clinical history of a 28-year old male patient. He was admitted to Hospital Universitario del Valle in Cali, Colombia with a clinical history of dysphagia, weight loss, and excessive salivation.The initial examination (esophagogram, cervical CAT scan and endoscopy) demonstrated a mass that was reported as a fibrovascular polyp. The finding of the pathological diagnosis was myxoid liposarcoma.Conclusions: The rarity of this condition recommends report of its detailed description. The myxoid liposarcoma of the esophagus can be diagnosed if a patient has a history of a slow-growing esophageal mass with a low tumor density in computed tomography in combination with surgical resection and histological examination.
Impacto do exercício físico isolado e combinado com dieta sobre os níveis séricos de HDL, LDL, colesterol total e triglicerídeos
Fagherazzi, Sanmira;Dias, Raquel da Luz;Bortolon, Fernanda;
Revista Brasileira de Medicina do Esporte , 2008, DOI: 10.1590/S1517-86922008000400012
Abstract: adequate eating habits and physical exercise have a beneficial effect on dislipidemies. when associated, they might even optimize changes to the plasmatic lipoproteic profile, apart of which they are moderate-cost interventions if compared to drug-based and high-tech depending treatments. the present study aims at assessing the impact of physical exercise as isolated and combined with a diet on the lipidic profile of overweight/obese individuals. tn observational analytical retrospective study has looked into the evolution of the lipidic profile and weight over a period of 3 to 6 months of 30 individuals divided in two groups: the exercise group (physical exercise practice) and the diet group (physical exercise associated with a nutritional intervention). significant statistical reductions were found in the ct (-14.4 mg/dl; p=0,022) and in the ldl-c (-20.9 mg/dl; p = 0,013) for the components in the exercise group. such reduction has also occurred regarding the ct/hdl-c (-0,9; p = 0,005) ratio for the components of the diet group. the increase in the hdl-c levels was observed only in the diet group (+4.2 mg/dl). in this same group a decrease in the ct (-8 mg/dl) and in the ldl-c (-9,8 mg/dl) was observed as well as a weight reduction (-2.6 kg), however, such results have not been statistically significant. regarding the tg levels, there was no evidence for a positive evolution in either group. as a conclusion, the isolated effect of physical exercise was more evident concerning the variables ct and ldl-c. the tg did not undergo positive modifications upon the exclusive practice of physical exercise or with their association with the diet. as for variables hdl-c and weight, the combination of diet and physical exercise has proven to bring enhanced benefits.
Biología reproductiva de Lutjanus guttatus (Perciformes: Lutjanidae) en el Parque Nacional Natural Utría, Pacífico colombiano Reproductive biology of Lutjanus guttatus (Perciformes: Lutjanidae) in Utría National Park, Colombian Pacific
Tatiana Correa-Herrera,Luz Fernanda Jiménez-Segura
Revista de Biología Tropical , 2013,
Abstract: Las áreas protegidas son importantes para la conservación de las poblaciones naturales ya que funcionan como zonas de refugio, alimentación y reproducción en la que los organismos deberían estar eximidos de la presión antrópica, pero en aquellas áreas donde se permite la pesca, es elemental conocer los aspectos reproductivos de las especies que soportan la presión pesquera, ya que ésta información relacionada con las abundancias, tallas y frecuencias de captura pueden ofrecer mejores criterios para tomar decisiones de manejo y conservación de los recursos pequeros. La biología reproductiva del pargo lunarejo Lutjanus guttatus se estudió entre abril 2008 y febrero 2009 en el Parque Nacional Utría, Pacífico colombiano. Se analizaron los volúmenes de captura, estructura por tallas, proporción de sexos, fecundidad, talla media de madurez, áreas y épocas de reproducción (n=278). La longitud total osciló entre 18 y 56cm con una media y desviación estándar de 29±6.4cm. La talla media de madurez fue estimada en 23.5cm de longitud total, la fecundidad absoluta fue 156 253.11 ovocitos, con una moda de 4μm de diámetro y un desarrollo gonadal asincrónico. La presencia de individuos maduros y de un alto factor de condición sugieren épocas de desove en junio, septiembre y octubre en litorales rocosos y arenosos. Protected areas are important for natural population conservation since they work as refuge, feeding and breeding areas, where specimens should be exempt from human pressure. The generation of better criteria for management decisions and conservation of fishery resources, is based on the reproductive aspects of species that support fishing activities, since this information is related to the abundance, size and frequency of capture. With this aim, the reproductive biology of the spotted snapper Lutjanus guttatus was studied from April 2008 and February 2009 at the Utría National Park, Colombian Pacific. For this, we analyzed the volume of catch, size structure, sex ratio, fecundity, maturity size, breeding areas and seasons (n=278), of daily landings of 21 units of artisanal fisheries in ten fishing grounds in the Park. Form all landings, we evaluated a total of 4 319 individuals belonging to 84 species. Based on the number of individuals, Lutjanus guttatus ranked third in catches representing 6.4% (278 individuals), and 16th with 1.8% (95.79kg), based on catch biomass. The average weight was 0.34kg ±0.25kg, while 29cm±6.4cm for total length. The total length-weight relationship had the best fit (Kruskal-Wallis, p<0.05, n=272) with the equation PT=0.00000885*
DEVELOPMENT OF THE AXIAL SKELETON DURING THE EARLY ONTOGENY OF PIMELODUS SP. (PISCES: PIMELODIDAE)
Ochoa,Luz Eneida; Fernández,Geysson Javier; Jiménez-Segura,Luz Fernanda;
Boletín Científico. Centro de Museos. Museo de Historia Natural , 2010,
Abstract: the knowledge on the somatic development during the early life stage of colombian fish is scarce. some meristic characteristics such as vertebrae and myomere number are considered good tools in the taxonomic identification of fish species. however, little is known on the development of these structures, their limits during the larval stages of development, and its conservation during the adult stage. the genus pimelodus is distributed in south america and has commercial importance as a food resource for riverside human communities. its species p. groskopffi and p. blochii reproduce with floods and its densities are the highest in ichthyoplankton conformation in the magdalena river. by means of coloration and transparentation techniques recommended in bone and muscle studies in larvae, myomere and vertebrae quantification in three zones of the spinal cord (cephalic, pre-anal and post anal) and their relation to the three development phases in pimelodus sp. larvae are presented.
A population-based surveillance study on severe acute maternal morbidity (near-miss) and adverse perinatal outcomes in Campinas, Brazil: The Vigimoma Project
Eliana Amaral, Jo?o Souza, Fernanda Surita, Adriana G Luz, Maria Sousa, José Cecatti, Oona Campbell
BMC Pregnancy and Childbirth , 2011, DOI: 10.1186/1471-2393-11-9
Abstract: From October to December 2005, all cases of maternal death (MD), near-miss (NM), fetal deaths (FD), and early neonatal deaths (END), occurring in Campinas, Brazil, were audited by maternal mortality committees.A total of 4,491 liveborn infants (LB) and 159 adverse perinatal events (35.4/1000 LB) were revised, consisting of 4 MD (89/100.000 LB) and 95 NM (21.1/1000 LB), 23.7 NM for each MD. In addition, 32 FD (7.1/1000 LB) and 28 END (6.2/1000 LB) occurred. The maternal death/near miss rate was 23.7:1. Some delay in care was recognized for 34%, and hypertensive complications comprised 57.8% of the NM events, followed by postpartum hemorrhage.Auditing near miss cases expanded the understanding of the spectrum from maternal morbidity to mortality and the importance of promoting adhesion to clinical protocols among maternal mortality committee members. Hypertensive disorders and postpartum hemorrhage were identified as priority topics for health providers training, and organization of care.Reducing maternal mortality is a target of the Millennium Development Goals. The maternal mortality ratio (MMR) is used to track its trends, and constitutes the most sensitive indicator for social inequalities. It varies from 20 to 920/100,000 live births, resulting in a lifetime risk of death of one per 16 women in Sub-Saharan Africa, contrasting with one per 4,100 in developed countries [1]. Recent evaluation of the progress towards this goal shows that the results so far have been largely insufficient, particularly in the regions where maternal mortality is very high [2].The Safe Motherhood Initiative, which proposed to stratify care at delivery by classifying cases during pregnancy as being of low or high risk, proved unsuccessful [3]. The initiative that followed, Making Pregnancy Safer, was based on the hypothesis that every delivery should be carried out by well-trained professional staff with easy access to emergency obstetrical care [4,5]. Confidential enquiry or audit of cas
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