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Search Results: 1 - 10 of 276043 matches for " José Santiago; López-Rojas "
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El subregistro potencial de accidentes de trabajo en el Instituto Mexicano del Seguro Social
Salinas-Tovar,José Santiago; López-Rojas,Pablo; Soto-Navarro,María Oralia; Caudillo-Araujo,David Efraín; Sánchez-Román,Francisco Raúl; Borja-Aburto,Víctor Hugo;
Salud Pública de México , 2004, DOI: 10.1590/S0036-36342004000300009
Abstract: objective: to assess the potential under-registration of work-related accidents in the mexican institute of social security. material and methods: a countrywide cross-sectional study was carried out with information collected from 27 district offices of the mexican institute of social security (miss), on workers seen at miss emergency rooms during november 2001 because of a probable accident at work. we compared these reports to official records of work-related accidents to estimate the proportion of incomplete reports. data analysis consisted of descriptive statistics for each variable; the annual estimation of incomplete reporting proportions was made by multiplying by twelve months; 95% confidence intervals were estimated using poisson's exact method for a proportion. results: data from 27 out of 37 miss district offices revealed that 7 211 cases were not recognized as work accidents, accounting for an underestimation of 26.3%, ranging between 0 and 68% among the different district offices. the accidents that were most frequently left unregistered were mild and blunt injuries. conclusions: under-registration can affect worker compensation plans and the financial balance of the institution's occupational risk insurance. research is needed to investigate and eliminate the causes of under-registration. employers, the industry, and health institutions should be involved in this effort
Simulación en trabajadores que solicitan pensión por invalidez laboral
Quezada-Ortega, Martín Rafael;Razo-Mondragón, José Luis Pedro;Marín-Coto?ieto, Irma Araceli;Salinas-Tovar, Santiago;López-Rojas, Pablo;
Gaceta médica de México , 2006,
Abstract: objective: describe the frequency and characteristics of mexican social security workers with malingering disorder that request disability pension. material and methods: comparative survey made among 136 workers seen during 2001, which were divided into three groups: malingering workers (mw), workers without disability (wod), and workers with disability (wwd). we administered the z test for scaled variables and test for nominal variables to identify group differences results: the incidence of malingering was of 2.2/100,000 workers. mean age was 41.9 ± 10.1 years, 440 was the average number of days of labor disability; 51 (37%) workers were malingerers. 35 (26%) workers were work disabled and 50 (37%) without disability. malingerers had higher level of schooling compared with wod and wwd (p < 0.02); most worked at the social security (p < 0.05), with lower number of previous jobs (p < 0.05), presented longer work disability (p < 0.05). depressive symptoms were not frequently noted (p < 0.025) and all had normal electroencephalogram and brain computed tomography studies. conclusions: malingering workers who request work disability pensions follow a particular pattern that differs from other workers that request disability assessment at the social security institute of mexico.
Effect of the quality of health care on permanent inability secondary to femoral fractures due to occupational accidents
Salinas-Tovar,Santiago; Reyes-Frausto,Sandra; Aguilar-Salinas,Alberto; López-Marmolejo,Alberto; Hernández-Leyva,Blanca E.; López-Rojas,Pablo;
Salud Pública de México , 2001, DOI: 10.1590/S0036-36342001000200005
Abstract: objective: to construct and validate an indicator for evaluating the quality of care for femoral fractures, and to assess the contribution of the quality of health care as a determinant of partial permanent inability secondary to femoral fractures due to occupational accidents. materials and methods: the study was conducted from january to december 1995 at mexican institute of social security. the instrument was designed with experts' contribution along different stages and validated using implicit criteria and factorial analysis. a case-control study was then conducted to evaluate the contribution of the quality of care to inability secondary to femoral fractures. cases were 108 active workers with permanent inability secondary to femoral fracture; controls were 94 active workers with fracture of femur but no permanent inability. logistic regression modeling was used to establish the association between quality of care and partial permanent inability, adjusting by relevant variables. results: the ultimate indicator of quality of care consisted of the following: timely care, pre-surgical management, surgical management, and fracture complications. a final score over 229 points meant that the worker had received good quality of care. workers getting 229 or less points had received poor quality of care. forty-eight (44%) cases and 66 (70%) controls received good quality of medical care. the likelihood of partial permanent inability was almost three times higher among workers given poor quality of care (or 2.95; 95% ci 1.5 - 5.5). according to the multivariate model, predictors of partial permanent inability were: having exposed or epiphysiary fractures, being re-submitted to surgery, having less than 90 days of rehabilitation care, and receiving deficient medical care. conclusions: the constructed instrument was validated. the level of the quality of care received by workers is a determining factor for the generation of partial permanent inability. in workers having f
Factores de riesgo asociados a los accidentes de trabajo en la industria de la construcción del Valle de México
Sarmiento-Salinas, Rodrigo;López-Rojas, Pablo;Marín-Coto?ieto, Irma Araceli;Godínez-Rocha, Arturo;Haro-García, Luis;Salinas-Tovar, Santiago;
Gaceta médica de México , 2004,
Abstract: objective: our aim was to describe construction-industry work-related accident prevalence in, associated factors in, and potential impact on affiliated workers of the mexican institute of social security (instituto mexicano del seguro social, imss) in the valley of mexico. materials and methods: prevalent cases in a retrospective case-control design. cases: these include 385 construction-industry workers who were found to have construction work-related accidents in 2001. controls: comprised 385 active construction-industry workers without work-related accident background paired by gender, workplace, and worksite. results. work-related accident prevalence in construction workers was 5.5%; most important risk factors and etiology fraction (ef) included the following: age 16-20 years odds ratio, or = 1.58, 95% confidence interval (95% ci) 1.40-10.7, p=0.001, efi 0.36; eventual insurance, or = 3.7, 95% ci, 2.16-26.45, p = 0.001), efi 0.72, and no training for job, or =5.3, 95% ci, 4.9-69.2, p = 0.01), ef: 0.81. variables not showing significance were included salary, work shift, and workday. conclusions. work-related accident prevalence maintains its preponderance in the valley of mexico construction industry; identified risk factorsare potentially modifiable, among which job training acquires unquestionable relevance.
Diversity, Distribution and Composition of the Bivalvia Class on the Rocky Intertidal Zone of Marine Priority Region 32, Mexico  [PDF]
Rafael Flores-Garza, Victor López-Rojas, Pedro Flores-Rodríguez, Carmina Torreblanca Ramírez
Open Journal of Ecology (OJE) , 2014, DOI: 10.4236/oje.2014.415080
Abstract: The Bivalvia Class, is widely represented in marine ecosystems and is economically important; this research focused on this class and was carried out by sampling the rocky intertidal zone of seven sites located in the Marina Region Priority No. 32, Guerrero, Mexico, where the National Commission for the Knowledge and Use of Biodiversity reported lack of knowledge on marine species living there. The objectives were to examine species richness associated with the rocky intertidal zone, determine how the community is composed by the representation of families based on species richness and abundance, know the distribution of the species, analyze the structure sizes of populations and estimate the diversity index. Sampling was conducted at seven sites; the sampling unit was one square meter and the sampling area was 10 m2. 32 species were identified. Four species are new records for the Mexican Pacific Transitional: one for the state of Guerrero and one for Marine Priority Region 32. Arcidae and Mytilidae Families were better represented in species richness and Chamidae Family was the best represented in abundance. Chama coralloides was considered to be the representative species of the area; Striostrea prismatica showed the greatest size. The diversity index was estimated (H' = 3.65 bits/individuals). Species richness is high and corresponds to that expected in a tropical area.
Especiación vicariante en el género gephyrocharax eigenmann 1912 pisces: characidae: glandulocaudinae de venezuela
Bonilla-Rivero,Ana; López-Rojas,Héctor; Machado-Allison,Antonio;
Interciencia , 2002,
Abstract: to obtain preliminary information on the biogeography of gephyrocharax species, the morphologic and genetic patterns of its venezuelan representatives were identified. evidence from vicariant events associated with the eastwardly progression of the orinoco river to its present position and the andes uplifting, the species? actual distribution patterns, and the unique morphologic and genetic patterns of g. melanocheir, which differentiate it from the other two species, allow us to hypothesize that the current distribution of the three species was produced by the isolation of small populations in colombia and northeastern venezuela (present g. melanocheir), followed by the separation of the present g. venezuelae in central-western venezuela. most of the ancestral population remained in the main channel of the orinoco river (present g. valencia).
Triatoma mexicana (Hemiptera: Reduviidae) in Guanajuato, Mexico: house infestation and seasonal variation
Salazar Schettino, Paz María;Rosales Pi?a, José Santiago;Rojas Wastavino, Gloria;Cabrera Bravo, Margarita;Vences Blanco, Mauro;López Cárdenas, Jorge;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007005000118
Abstract: triatoma mexicana was described by herrich-schaeffer in 1848. in 1940, a male specimen was found in hidalgo. in 1970, this species was recorded in the state of queretaro. later, it was registered in guanajuato and san luis potosi. in the present paper we performed an investigation in 545 dwellings from three counties in the state of guanajuato, mexico, from march 2003 to may 2004. the search and capture of triatomines were seasonally performed indoors and outdoors. entomological indexes were calculated. the risk and no risk relations between triatomine presence and housing construction materials were analyzed. fourteen triatomines were collected indoors and 151 outdoors. the vectors were collected in houses built with either risky and non-risky materials. adults go indoors but do not settle there, hence, no relationship was found between the building materials and infestation of houses. conventional interventions like house improvement or insecticide spraying are not efficient for the control of t. mexicana, because its developmental cycle is accomplished outdoors in the area surrounding the houses.
Estrategias territoriales recientes en Venezuela: ?reordenación viable de los sistemas territoriales o ensayos de 1aboratorio?
EURE (Santiago) , 2009, DOI: 10.4067/S0250-71612009000100004
Abstract: the historical formation of venezuela's 1and use model has been criticized by different national government administrations since the 1960s, given that this model is held responsible for generating social inequalities. in response to these criticisms, the current venezuelan government has taken up old projects and formu1ated new 1and use proposals in order to redistribute the popu1ation as well as economic activity within the national space. given their limited methodological and conceptual foundations, political bias and 1ack of economic realism, it is appropriate to ask whether the proposals are viable or simply 1aboratory trials. the paper provides a reflection on the validity of these proposals, since they constitute centralized 1and use controls in spite of the federal and decentralized statutes founded in the constitution of the bolivarian republic of venezuela.
Los cultivos líderes de la agricultura venezolana (1984-2005)
Mora,Elba Marina; Rojas López,José;
Agroalimentaria , 2007,
Abstract: in this work, using descriptive statistical procedures, venezuelan leading agriculture crops for the period 1984-2005, as well as the general relations with production, the harvested area, and yields were defined. crops were selected according to their relative weight in the total production value of the corresponding production group and according to the time tendencies curves in the period concerned. eleven leading crops were identified, of which those which best compared with yields to their corresponding counterpart in countries where production is greater, corresponded to those that occupied less area in the national agricultural space, while those of greater production and harvested area in venezuela, are those that compared less favorably with the yields of their international counterparts. such findings point towards serious doubts about the argument that land is the main limiting factor for increasing the production of these last categories.
Estrategias territoriales recientes en Venezuela: reordenación viable de los sistemas territoriales o ensayos de 1aboratorio?
EURE (Santiago) , 2009,
Abstract: El modelo territorial conformado históricamente en Venezuela, ha sido criticado desde 1a década de los a os sesenta del siglo pasado por 1as diferentes administraciones nacionales, debido a que se le atribuye 1a principal responsabilidad por 1as desigualdades sociales. Basado en esas críticas, el actual gobierno venezolano ha retomado antiguos proyectos y formu1ado nuevas propuestas territoriales, orientadas a redistribuir 1a población y 1as actividades económicas en el espacio nacional. Dada su escasa fundamentación conceptual y metodológica, sesgo político y poco realismo económico, resulta válido preguntarse si son propuestas viables o ensayos de 1aboratorio. Más que respuestas, este trabajo constituye una reflexión respecto a 1a validez de esas propuestas, pues pretenden controles territoriales centralizados a pesar del estatuto federal y descentralizado del Estado consagrado en 1a Constitución de 1a República Bolivariana de Venezuela. The historical formation of Venezuela's 1and use model has been criticized by different national government administrations since the 1960s, given that this model is held responsible for generating social inequalities. In response to these criticisms, the current Venezuelan government has taken up old projects and formu1ated new 1and use proposals in order to redistribute the popu1ation as well as economic activity within the national space. Given their limited methodological and conceptual foundations, political bias and 1ack of economic realism, it is appropriate to ask whether the proposals are viable or simply 1aboratory trials. The paper provides a reflection on the validity of these proposals, since they constitute centralized 1and use controls in spite of the federal and decentralized statutes founded in the Constitution of the Bolivarian Republic of Venezuela.
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