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| Registros recuperados: 285 | |
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| Todendi,Pâmela F.; Klinger,Elisa I.; Ferreira,Michele B.; Reuter,Cézane P.; Burgos,Miria S.; Possuelo,Lia G.; Valim,Andréia R.M.. |
| Activation of adipose tissue inflammation is associated with obesity caused by lipid accumulation in adipocytes. Through this activation, proinflammatory cytokines, such as Interleukin-6 (IL-6) and C-reactive protein (CRP) seem to influence metabolic disorders. The present study evaluated whether polymorphisms in the CRP (rs1205) and IL-6 (rs1800795, rs2069845) genes are associated with the development of metabolic disorders in children and adolescents. A cross-sectional study was performed, consisting of 470 students from the municipality of Santa Cruz do Sul, Brazil, aged 7-17 years. Body mass index (BMI) was classified according to overweight and obesity. Genotyping was performed by real-time Polymerase Chain Reaction(PCR). Anthropometric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inflammation; Obesity; Polymorphisms; Risk; Schoolchildren. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200915 |
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| Conte,Juan C.; Rubio,Emilio A.; García,Ana I.; Cano,Francisco J.. |
| We present a new generalized model for the diagnosis and prediction of accidents among the Spanish workforce. Based on observational data of the accident rate in all Spanish companies over eleven years (7,519,732 accidents), we classified them in a new risk-injury contingency table (19×19). Through correspondence analysis, we obtained a structure composed of three axes whose combination identifies three separate risk and injury groups, which we used as a general Spanish pattern. The most likely or frequent relationships between the risk and injuries identified in the pattern facilitated the decision-making process in companies at an early stage of risk assessment. Each risk-injury group has its own characteristics, which are understandable within the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Correspondence model; Contingency analysis; Risk; Injury; Occupational accidents. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300031 |
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| Uribe-Castañeda,Natalia; Satizabal,Carlos Andrés; Herrera Orozco,Leonardo; Cantera Kintz,Jaime Ricardo. |
| ABSTRACT Systems of Uramba Marine Protected Area (MPA), like marine and coastal systems worldwide, sustain a great variety of ecosystem services (ES) (i.e. coastal protection, climate regulation, or food provision, etc.). Anthropogenic and natural stressors (i.e. coastal erosion, sea level rise, or overfishing, etc.) can transform, degrade, or limit the supply of ecosystem services. This study explores the vulnerability of Uramba MPA ecosystem services to anthropogenic and natural stressors. Stressors and ecosystems services were characterized by a literature review, an expert’s workshop, fieldtrips for validation, and georeferencing. To calculate the vulnerability of ecosystem services, the magnitude of each stressor, their risks, and their resilience... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stressors; Resilience; Risk; Colombian Pacific; Tropical Eastern Pacific. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000300095 |
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| Zou,Yuanyuan; Zhang,Xi; Zhang,Jingyi; Ji,Xiangning; Liu,Yuqing; Zhao,Shaozhen. |
| The aim of this study was to perform an updated meta-analysis to quantitatively investigate the association between G20210A polymorphism of Prothrombin gene and the risk of retinal vein occlusion (RVO), based on the available publications with inconsistent results. We utilized the Stata software to perform the heterogeneity test, association test, Begg's and Egger's tests, and sensitivity analysis. We searched three on-line databases (PubMed, Embase, and WOS) and obtained a total of 422 articles. Based on our selection criteria, 24 case-control studies were finally enrolled in this overall meta-analysis; a subgroup analysis by the factors ethnicity, control source, and RVO type was done. Through the association test of overall meta-analysis, we did not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prothrombin; Retinal vein occlusion; Polymorphism; Risk; Meta-analysis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000400604 |
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| Vasconcelos,V.M.. |
| Toxic cyanobacteria are common in Portuguese freshwaters and the most common toxins are microcystins. The occurrence of microcystin-LR (MCYST-LR) has been reported since 1990 and a significant number of water reservoirs that are used for drinking water attain high levels of this toxin. Aquatic animals that live in eutrophic freshwater ecosystems may be killed by microcystins but in many cases the toxicity is sublethal and so the animals can survive long enough to accumulate the toxins and transfer them along the food chain. Among these, edible mollusks, fish and crayfish are especially important because they are harvested and sold for human consumption. Mussels that live in estuarine waters and rivers where toxic blooms occur may accumulate toxins without... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanobacteria; Toxins; Risk; Human health; Microcystins; Accumulation. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000300001 |
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| Wei,Y.-L.; Tian,Q.; Zhao,X.-X.; Qiu,G.-Z.; Xu,Y.. |
| This study aimed to determine the role of mitofusin 2 (MFN2) gene polymorphisms in the risk and prognosis of acute liver failure (ALF). A total of 298 blood samples were collected from 138 ALF patients (case group) and 160 healthy participants (control group). Coagulation function, glutamic pyruvic transaminase (GPT), glutamic oxaloacetic transaminase (GOT), total bilirubin (TB), blood ammonia and lactic acid (LA) were measured. The predictive evaluation of MFN2 gene polymorphisms in the risk and prognosis of ALF patients was estimated using Kaplan-Meier survival analysis, haplotype analysis, binary logistic regression analysis and Cox regression analysis. Higher levels of GPT, GOT, TB, blood ammonia and LA were observed in ALF patients with the GG... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acute liver failure; MFN2; Gene polymorphism; Risk; Prognosis; Chinese population. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600605 |
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| Sekiyama,Beatriz Leiko; Ribeiro,Alessandra Braga; Machinski,Paulo André; Machinski Junior,Miguel. |
| The occurrence of aflatoxins B1 (AFB1), B2 (AFB2 ), G1 (AFG1 ) and G2 (AFG2 ), ochratoxin A (OA) and zearalenone (ZEA) was evaluated in 121 maize-based food samples collected in the commerce of Maringá City, Paraná State, Brazil. The study was carried out between January 2002 and February 2003. Thin-layer chromatographic method was used to determine the mycotoxins. The recovery averages were 106.6%, 109.4%, 106.6%, 109.4%, 101.8% and 101.7% to AFB1, AFB2, AFG1, AFG2, OA and ZEA, respectively. Three samples (2.5%) were positive to AFB1 (8 to 59 µg/kg), two (1.7%) to AFB2 (2.4 µg/kg), one (0.8%) to OA (64 µg/kg) and one (0.8%) to ZEA (448 µg/kg). The greater frequency of positive samples and also the highest concentration of AFB1 were found in popcorn... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; Risk; Brazilian products derived from maize. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300016 |
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| Hayran,Seyit. |
| ABSTRACT: In this study, risk perception of wheat producers in Turkey was examined based on a case study conducted in Bitlis Province. The data set used in the study was obtained from 157 farmers randomly. Factor analysis was employed to classify risk sources and management strategies, and then multiple regression was used to investigate the relationship between farmers perceptions and some characteristic. Results of this study have shown that economic-based risks were perceived more strongly by farmers. Farmers’ also used more than one risk management strategy to minimize the impact of the risks they face. So, in order to ensure social and economic sustainability and predictability in wheat production and wheat market, the government should be considered... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Risk; Risk management; Wheat; Turkey. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001200201 |
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| García Juárez, José de Jesús. |
| El objetivo de este trabajo es evaluar la eficiencia de las coberturas de precios de maíz blanco operadas por ASERCA. Para el estudio, se utiliza el análisis de cointegración de S. Johansen que consiste en probar la existencia de cointegración entre las variables de series de tiempo, en este caso: precios al mayoreo de maíz blanco, precio a futuro de maíz amarillo cotizado en la Bolsa de Futuros de Chicago (CBOT) y tipo de cambio peso-dólar; esta variable en particular, porque al adquirir una cobertura, existe también un riesgo cambiario dado que tanto la adquisición como la liquidación de las coberturas son realizadas en dólares. Los resultados indican que los precios de maíz al mayoreo de las centrales de abasto de Sinaloa, Jalisco, Estado de México,... |
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Palavras-chave: ASERCA; Cointegración; Riesgo; Serie de tiempo; Cointegration; Risk; Time series; Maestría; Economía. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/421 |
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| Reyes Olvera, Ana Laura. |
| Los problemas ocasionados por las inundaciones en México se han incrementado de manera considerable, específicamente en el estado de Tabasco las pérdidas por inundaciones son preocupantes. Por esta razón resulta de gran interés la construcción de un índice que mida el riesgo de inundación en una área determinada. En el presnte trabajo se construye un indicador del riesgo de inundación en el estado de Tabasco, para esto se consideran los siguientes tres componentes: la vulnerabilidad, el costo y el peligro. Con el componente de vulnerabilidad se mide que tan susceptible es el área de interés frente a una inundación y para esto se toma en cuenta tanto elementos sociales como naturales, en el primero se considera la disposición de los servicios con los que... |
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Palavras-chave: Indice de riesgo; Vulnerabilidad; Costo; Peligro; Valores extremos; Risk index; Vulnerability; Cost; Risk; Extreme values; Estadística; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/770 |
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| Cobián Romero, Lizbeth. |
| Una empresa innovadora que inicia en el mercado es conocida en la literatura como Start-Up; esté tipo de firmas al ser evaluadas con los métodos tradicionales (tasa interna de retorno, TIR; valor actual neto, VAN y relación benéfico-costo, B/C) son generalmente rechazadas debido a que no cuentan con información económico-financiera suficiente. El objetivo de éste trabajo fue determinar si la incorporación de las metodologías Opciones Reales y Valores Críticos a la evaluación tradicional agregan valor a empresas Start-Up. El caso que se trató fue el de una planta de bioplásticos. Para calcular la opción de compra al aumentar la producción se utilizó el método de Black-Scholes, que consiste en una ecuación y cinco variables. Para calcular el beneficio... |
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Palavras-chave: Black-Scholes; Evaluación de proyectos; Bioplástico; Riesgo; Incertidumbre; Project evaluation; Bioplastic; Risk; Uncertainty; Maestría; Economía. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/688 |
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| García Juárez, José de Jesús. |
| El objetivo de este trabajo es evaluar la eficiencia de las coberturas de precios de maíz blanco operadas por ASERCA. Para el estudio, se utiliza el análisis de cointegración de S. Johansen que consiste en probar la existencia de cointegración entre las variables de series de tiempo, en este caso: precios al mayoreo de maíz blanco, precio a futuro de maíz amarillo cotizado en la Bolsa de Futuros de Chicago (CBOT) y tipo de cambio peso-dólar; esta variable en particular, porque al adquirir una cobertura, existe también un riesgo cambiario dado que tanto la adquisición como la liquidación de las coberturas son realizadas en dólares. Los resultados indican que los precios de maíz al mayoreo de las centrales de abasto de Sinaloa, Jalisco, Estado de México,... |
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Palavras-chave: ASERCA; Cointegración; Riesgo; Serie de tiempo; Cointegration; Risk; Time series; Maestría; Economía. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/421 |
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| Reyes Olvera, Ana Laura. |
| Los problemas ocasionados por las inundaciones en México se han incrementado de manera considerable, específicamente en el estado de Tabasco las pérdidas por inundaciones son preocupantes. Por esta razón resulta de gran interés la construcción de un índice que mida el riesgo de inundación en una área determinada. En el presnte trabajo se construye un indicador del riesgo de inundación en el estado de Tabasco, para esto se consideran los siguientes tres componentes: la vulnerabilidad, el costo y el peligro. Con el componente de vulnerabilidad se mide que tan susceptible es el área de interés frente a una inundación y para esto se toma en cuenta tanto elementos sociales como naturales, en el primero se considera la disposición de los servicios con los que... |
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Palavras-chave: Indice de riesgo; Vulnerabilidad; Costo; Peligro; Valores extremos; Risk index; Vulnerability; Cost; Risk; Extreme values; Estadística; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/770 |
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| Registros recuperados: 285 | |
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