OALib Journal期刊

ISSN: 2333-9721



匹配条件: “Ugel Eunice” ,找到相关结果约685条。
Henríquez Graciela,Ugel Eunice,Torrealba Keyla,Veliz, Roberto
Salud, Arte y Cuidado , 2011,
Abstract: A field research feasible project for the implementation of a virtual classroom to students from the second semester of Nursing Program in the course Introduction to Computing was performed. In the first diagnosis phase, the need for the implementation of a virtual classroom in that subject was determined. Information was collected by means of a questionnaire validated through expert opinions before being applied. In the second phase, a feasibility study determined the legal and institutional support framework of the project. In the third phase, taking into account the results of diagnostic and feasibility phases, a proposal was designed meeting the objectives of the program using multimedia strategies. The design and development of the proposal will result in: a) four trained teachers competent to assume the facilitator and/or tutor role at distance, b) a screening test to obtain general and specific information about the students and c) a subject updated program, educational guides as well as the design of a virtual classroom.
salud oral de las personas con retraso mental en cuatro municipios del estado lara, 2003
Dávila,María E; Gil,Maritza; Daza,Damelis; Bullones,Xiomara; Ugel,Eunice;
Acta Odontológica Venezolana , 2005,
Abstract: abstract an investigation was conducted to determine the oral health and general characteristics of the mentally retarded (mr) people in four counties at the state of lara. a multi-stage sampling design was used, selecting randomly 15 out of 88 special education schools. the sample was conformed by 155 subjects who filled the inclusion criteria. previous authorization, parents were interviewed and the persons with mr were examined. the mean age was 14,6±7,11, and the mean age of the mother at the time of delivery was 29,03±7,26. most of the people belong to blue collar social status (60,6%). the most common type of mr was mild (32,9%). regarding oral health, 65,2% of the persons had dental caries. sixty four point five percent (64,5%) had gingival signs. urgent treatment was needed by 24,5% of the participants. statistical significant difference was found between socioeconomic status and dental health service (p=0,017), and between type of mr and gingival signs (p=0,04). from these results one may conclude that the participants show a poor oral health, most of them belong to the lower social class, therefore public dental health services must be equipped, and their personnel trained for prevention, treatment and rehabilitation of this population at risk
Caries dental en personas con retraso mental y Síndrome de Down
Dávila,María E.; Gil,Maritza; Daza,Damelis; Bullones,Xiomara; Ugel,Eunice;
Revista de Salud Pública , 2006, DOI: 10.1590/S0124-00642006000300006
Abstract: objective a descriptive investigation was conducted for determining the prevalence of dental caries amongst mentally retarded (mr) people and those suffering from down's syndrome (ds). methods a special school located in morán county in the state of lara was visited. the inclusion criteria involved dental examination of 60 students and their parents/or the person responsible for them being interviewed. results participants' mean age was 14,5 ± 8,17; 48,3 % were from a blue collar level. regarding oral health, 53.0% had dental caries, 51,7 % being in the molars. moderately mr people had the highest proportion of dental caries (75 %). about 53 % of the females and 46,2 % of males, 64,4 % and 31,9,% of rm and ds participants had caries. 28,3 % needed non-urgent dental treatment and 45 % were using public dental health services. conclusions people suffering from mr and ds have precarious oral health; it is thus recommended that health programmes be created which are specifically directed towards these people.
Poly (Ethylene–Co–Vinyl Acetate)/Clay Nanocomposites: Effect of Clay Nature and Compatibilising Agents on Morphological Thermal and Mechanical Properties  [PDF]
Elisabetta Ugel, Gaetano Giuliano, Michele Modesti
Soft Nanoscience Letters (SNL) , 2011, DOI: 10.4236/snl.2011.14018
Abstract: A series of nanocomposites based on an ethylene vinyl acetate (EVA) copolymer with two types of inorganic clays was prepared by melt blending and film blowing.The tested clays were Hydrotalcite (a layered double hydroxide) and Dellite 72T (an organo-modified montmorillonite) in different percentage, the exfoliation degree of which has been evaluated in the presence of three types of compatibilisers. The nanocomposite morphology, thermal behaviour and mechanical properties were analysed as function of the nature and content of clays and in the presence of compatibilisers.
A Mixed Convection Boundary Layer Flow over a Vertical Wall in a Porous Medium, with Exponentially Varying Fluid Viscosity  [PDF]
Eunice Mureithi
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.28087

This study investigates a mixed convection boundary layer flow over a vertical wall embedded in a highly porous medium. The fluid viscosity is assumed to decrease exponentially with temperature. The boundary layer equations are transformed into a non-similar form using an appropriate non-similar variable ξ and a pseudo-similar variable η. The non-similar equations are solved using an efficient local non-similarity method. The effect of viscosity variation parameter on the heat transfer, skin friction and the velocity and temperature distribution within the boundary layer is investigated. The viscosity variation parameter, the viscous dissipation parameter and non-simi-larity variable are shown to have a significant effect on velocity and thermal boundary layer and also on the skin friction coefficient and heat transfer at the wall.

Optimal design and earthquake-resistant design evaluation of low-rise framed RC structure  [PDF]
Reyes Indira Herrera, Juan Carlos Vielma, Ronald Ugel, Yolsanie Martínez, Alex Barbat
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.428089
Abstract: This study evaluates the seismic response of an existing two stories RC building using non-linear analysis. The original model was resized and there were obtained two buildings designed under two different methodologies to fulfill the Venezuelan codes requirements for a high seismic hazard. An elastic analysis was applied to the original building in order to verify interstory drifts; the resizing building it was designed under requirements of strong column-wake beam condition. A third building was modeled according to the seismic displacement design procedure. It were performed non-linear static analysis and 2D and 3D dynamic analyses, obtaining capacity curves, structural ductility, structural performance point, global and interstory drifts for each building. Torsional effects for the resizing building were also computed from 3D analysis. In the original building it was obtained a weak seismic behavior, while resized buildings presented good seismic performance under the Limits States evaluated in this study.
Seismic response of high-rise steel framed buildings with Chevron-braced designed according to Venezuelan codes  [PDF]
Ronald Ugel, Juan Carlos Vielma, Reyes Herrera, Sigrit Perez, Alex Barbat
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.428091
Abstract: The object of this study is to determine the seismic response of regular high-rise steel buildings with chevron-braced frames. Mechanics models of three buildings of 14, 18 and 20 stories are studied, all of them with similar geometric characteristics in plant and elevation. These models are realized using prescriptions and parameters from venezuelan design codes. The seismic action is carry on through varius synthetic design spectrum compatible accelerograms defined by the seismic codes in this study, with three levels of intensity corresponding to three specific Limit States. Dynamic analysis is used to compute parameters of ductility, over strength and maximum displacements. From these results it can be concluded that chevron-braced frames presented a good overall performance and non V-braced frames show greater damage due to dynamic actions, validating non linear dynamic analysis as a very powerful tool to seismic-resistance design and chevron-braced frames as a very useful choice in improving the response of tall steel structures. since this lateral bracing system is absent from Venezuelan seismic codes.
The Infrared Continuum Radiation of NGC1808 : A PAH and Polarisation Study
R. Siebenmorgen,E. Kr"ugel,R. J. Laureijs
Physics , 2001, DOI: 10.1051/0004-6361:20010969
Abstract: The paper is devoted to the understanding of the infrared emission of nuclear regions in galaxies. a) ISO data of NGC1808 are presented: spectro--photometry from 5.1 to 16.4 mic., a 25"x25" map at 6 mic. and 170mic. photometry. b) The data are complemented by a polarization measurement at 170 mic. (2.5+/-0.4% at position angle 94+/-5deg) and a map at 6 mic. In the map, the degree of polarisation goes up to 20% in the outer regions. We argue that the polarisation is produced by emission of big grains and exclude very small grains and PAHs or scattering and extinction. c) The mid infrared spectrum shows, beside the main emission bands, a so far unknown plateau of PAH features in the >13 mic.region. d) The total spectrum can be fit under the assumption of optically thin emission. However, such a model fails to reproduce the 25mic. point and implies that the mid infrared is due to very small grains and PAHs. These particles would then also have to be responsible for the 6 mic. polarisation, which is unlikely. e) To avoid these difficulties, we successfully turn to a radiative transfer model whose major feature is the existence of (hot spots) produced by the dust clouds around OB stars. We demonstrate the decisive influence on the mid infrared spectrum of both the PAHs and the hot spots.
Ladders and simplicity of derived module categories
Lidia Angeleri H\" ugel,Steffen Koenig,Qunhua Liu,Dong Yang
Mathematics , 2013,
Abstract: Recollements of derived module categories are investigated, using a new technique, ladders of recollements, which are mutation sequences. The position in the ladder is shown to control whether a recollement restricts from unbounded to another level of derived category. Ladders also turn out to control derived simplicity on all levels. An algebra is derived simple if its derived category cannot be deconstructed, that is, if it is not the middle term of a non-trivial recollement whose outer terms are again derived categories of algebras. Derived simplicity on each level is characterised in terms of heights of ladders. These results are complemented by providing new classes of examples of derived simple algebras, in particular indecomposable commutative rings, as well as by a finite-dimensional counterexample to the Jordan--H\"older property for derived module categories. Moreover, recollements are used to compute homological and K-theoretic invariants.
Sampling of An.gambiae s.s mosquitoes using Limburger cheese, heat and moisture as baits in a homemade trap
Eunice Owino
BMC Research Notes , 2011, DOI: 10.1186/1756-0500-4-284
Abstract: Tests on the efficacy of the developed trap to sample An. gambiae s.s, mosquitoes using Limburger cheese, moisture and heat as baits were carried out in a screen house measuring 11.4 × 7.1 × 2.8 m. The studies were done in three phases. In the first phase the efficacy of the trap to sample An. gambiae s.s. using odour and moisture was tested. The second phase was to test the efficacy of the trap to sample An. gambiae s.s. using Limburger cheese and heat. In the third phase a combination of Limburger cheese, moisture and heat was tested. Tests were carried out for 27 consecutive nights.The designed trap collected a total of 59 An. gambiae s.s. in three trials. The trap baited with Limburger cheese and moisture collected 7 An. gambiae s.s in 7 days. The mean catch per day was 1. The trap baited with Limburger cheese and heat collected zero An. gambiae s.s in 11 days. The mean catch per day was therefore 0. The trap baited with Limburger cheese, moisture and heat collected 52 mosquitoes in 27 days and the mean catch was 1.93.This study indicates that a non-electric fan driven trap baited with a combination of Limburger cheese, heat and moisture has a potential as an effective sampling tool for the malaria vector, Anopheles gambiae s.s. However, further optimization studies would be necessary.Ample evidence has shown that odour baited traps are likely [1-3] to provide an objective monitoring tool for the host-seeking fraction of mosquito vectors of diseases like malaria and bancroftian filariasis. Such traps could eventually become part of primary healthcare systems used to study the vector biology and epidemiology of mosquito-borne diseases, knowledge of which is vital for planning and assessing outcome of intervention strategies. One might even foresee the development of odour baited mosquito traps [1,2] that might be used to reduce the vector population in a village or in an individual's bedroom to divert mosquitoes away from occupants. Such traps could then be used

Copyright © 2008-2017 Open Access Library. All rights reserved.