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Sensitivity,specificity and predictive values of anterior chamber tap in cases of bacterial endophthalmitis

Eye and Vision 2017年第1期4卷 100-105页

作者： Carl Sjoholm-Gomez de Liano Vidal F.Soberon-Ventura Guillermo Salcedo-Villanueva abril santos-p.lacios Jose Luis Guerrero-Naranjo Jans Fromow-Guerra Gerardo García-Aguirre Virgilio Morales-Canton Raul Velez-Montoya Retina Department Asociación para Evitar la Ceguera en MexicoHospital“Dr.Luis Sanchez Bulnes”IAPMexico CityMexico Universidad popular Autonoma del Estado de puebla PueblaMexico Ophthalmology Department Macula Retina ConsultantsMexico CityMexico

Background:To assess the sensitivity,specificity,positive predictive value and negative predictive value of anterior chamber tap for the diagnosis of bacterial endophthalmitis on a population with high ***:Retrospective,single centre,case series *** reviewed all medical records with clinical diagnosis of bacterial endophthalmitis in our hospital from January 1st,2000 to December 31st *** each record,we documented general demographic data,best corrected visual acuity and vitreous and aqueous tap microbiological *** cases were further divided according to the endophthalmitis aetiology to perform individual calculations of sensitivity,specificity,positive predictive value,negative predictive value,accuracy and *** used the results of the vitreous tap as the gold standard for diagnosis of bacterial *** excluded those records in which the aqueous and vitreous samples were not taken simultaneously or had an incomplete microbiological *** were assessed with chi squared statistics,with an alpha value of 0.05 for statistical ***:A total of 190 cases fulfilled the inclusion/exclusion *** culture rate from vitreous samples was 64.74%.positive culture rate from aqueous sample was 32.11%.Bacteria isolated from aqueous samples matched those isolated from vitreous samples 78.68%of the *** overall sensitivity was 38.21%,specificity:75.51%,positive predictive value:79.66%,negative predictive value:32.74%(p=0.08).Subgroup analysis showed that anterior chamber taps in cases of post-surgical endophthalmitis had a moderate to low sensitivity(37.73%),high specificity(93%)and high positive predictive value(95%)(ppecificity of anterior chamber tap are low and should not be used for critical therapeutic decisions in patients with suspected bacterial *** cases of post-surgical endophthalmitis,the result of an anterior chamber tap

关键词： Aqueous humour Endophthalmitis Anterior chamber tap Diagnostic test Vitreous tap Aqueous sampling Sensibility Sensitivity

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Harmonic propagation from the Low Voltage Four-Wire Delta Systems

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Journal of power and Energy Engineering 2016年第12期4卷 1-19页

作者： Jandecy Cabral Leite Manoel Socorro santos Azevedo Ubiratan Holanda Bezerra Ignacio pérez abril Carlos Alberto de León Benítez Department of Electrical and Industrial Engineering Institute of Technology and Education Galileo of Amazonia (ITEGAM) Manaus Brazil Department of Electrical Engineering Federal University of Para Belém Brazil Department of Electrical Engineering Central University of Las Villas (UCLV) Santa Clara Cuba

The electric networks for the distribution to low voltage costumers can be configured in different layouts. Two main approaches are used: the European system composed by three-phase distribution transformers or the North American system composed by single-phase distribution transformers and three-phase transformer banks of single-phase transformers. With respect to harmonic analysis, much more attention has been focused on the three-phase balanced systems arrangements than on the unbalanced four-wire delta system extensively used to supply low voltage loads of 120/240 V. Different authors have shown the three-phase power systems modeling on a phase-coordinates frame. However, the presence of significant asymmetries in the network forces the need of adding a new phase-coordinates model to represent the three-phase transformers banks of two or three single-phase transformers in its various connections. Several papers treat the use of harmonic analysis programs based on a phase-coordinates frame to study the Wye or Delta connected three-phase systems. However, the commonly used four-wire delta connected systems are not fully treated in literature. This paper presents a phase-coordinates model for the representation of the commonly used three-phase transformer banks of three or two single-phase transformers, and single-phase distribution transformers for the harmonic analysis of the four-wire delta connected systems. The harmonic analysis method based on the presented model is used to examine the characteristics of this kind of distribution system with respect to the penetration of harmonics currents from loads to the primary system.

关键词： Harmonic Analysis phase-Coordinates Four-Wire Delta Systems

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THE pApER AND pApERBOARD pRODUCTION IN CUBA WITH BAGASSE pULpS

THE PAPER AND PAPERBOARD PRODUCTION IN CUBA WITH BAGASSE PUL...

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1988国际非木材纤维制浆造纸会议

作者： abril,A. Aguero,C. Hdez,A. UIp de la Celulosa del Bagazo "Cuba-9" p.O.BOX 8 Quivicán Hahana.Cuba.Telex 51-1667 ICIDC.CU. UIp de la Celulosa del Bagazo "Cuba-9" p.O.BOX 8 Quivicán Hahana.Cuba.Telex 51-1667 ICIDC.CU. UIp de la Celulosa del Bagazo "Cuba-9" p.O.BOX 8 Quivicán Hahana.Cuba.Telex 51-1667 ICIDC.CU.

＜正＞Sugar cane bagasse is one of the most non wood fibrous raw material used and with better perspectives for the paper and paperboard production in the sugar cane producers countries, which in general do not have high wood resources availables for paper production. Cuba is the highest sugar cane exporter all over the world;hy the other hand there is no forest resources, it means that in spite of the bagasse fuel value, the Cuban paper Industry development has to be based mainly in thin raw material. Cuba was one of the first countries that started in 1915 the paper and paper-board production based on bagasse pulps in a limited way. Now there are nine paper and paperboard mills in the country four of them are integrated mills using several pulping processes. In this paper the main experiences in researching at labora tory, pilot plant and industrial scale based on the pruduc tion of paper and paperboard from sugar cane bagasse are presented. Bleached bagasse chemical pulps are mainly used for the production of writing and printing papers （offset papers）. Its strength and optical properties are described. Research experiences dealing with the use of cuban natural calcium carbonate as paper filler instead of imported clay are also presented. Offset printing papers were produced. The traditional sizing process was modified by a new sodium al uminate-rosin-alum system in order to size the paper in neutral medium. The main papermaking characteristics of the flutting paper produced from bagasse sugar cane semichemical pulp are analyzed as well as the potentiality of the mechanical type of pulp from bagasse on the production of paper and paperboard for industrial purposes and for writing and printing papers. It is concluded that in general sugar- cane bagasse can he used as a raw material for different kind of papers and paperboards.

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protein Fortification of Corn <i>Tortillas</i>: Effects on physicochemical Characteristics, Nutritional Value and Acceptance

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Food and Nutrition Sciences 2012年第12期3卷 1658-1663页

作者： abril Lecuona-Villanueva David A. Betancur-Ancona Luis A. Chel-Guerrero Arturo F. Castellanos-Ruelas Faculty of Chemical Engineering Autonomous University of Yucatán Campus of the Faculties of Engineering and Math Sciences Mérida México.

The aim of this study was to evaluate the texture of corn dough as well as the nutritional quality and acceptance of corn cakes (tortillas) made either with a readymade commercial corn flour (CCF) or with a traditional way (nixtamal) both fortified with lys + tryp (L + T) or with a protein concentrate from phaseolus lunatus added with L + T (pC + L + T). All treatments were analyzed to investigate the physical properties of the dough and tortillas as well as their physicochemical and nutritional quality. Results showed that cohesion was affected (p tortillas made with nixtamal showed no difference. Adhesion was not affected by treatments. Weight loss increased only in the fortified tortillas made with CCF (p tortillas increased with the fortification being the highest value 0.96 N. Color was not affected in tortillas made with CCF (p tortillas made with CCF and fortified with pC + L + T. Acceptance was greater for tortillas fortified with L+T alone. protein fortification of tortillas made with either CCF or nixtamal is feasible using either L + T together or in combination with a pC from phaseolus lunatus improving their nutritional value without negative effects on their physicochemical characteristics or acceptance.

关键词： Tortilla Amino Acids Child Malnutrition Fortification

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Assessing the Impact of Sulfur Atmospheric Deposition on Terrestrial Ecosystems Close to an Industrial Corridor in the Southeast of Mexico

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Journal of Environmental protection 2017年第10期8卷 1158-1177页

作者： Rosa M. Cerón Julia G. Cerón Manuel Muriel Marcela Rangel Reyna del C. Lara Beatriz Tejero Martha p. Uc abril Rodríguez Chemistry Faculty Autonomous University of Carmen Ciudad del Carmen Campeche Mexico Mexican Institute of petroleum Marine Zone Ciudad del Carmen Campeche Mexico Sciences of Health Faculty Autonomous University of Carmen Ciudad del Carmen Campeche Mexico Center of Environmental Sciences Research Autonomous University of Carmen Ciudad del Carmen Campeche Mexico

The main objective of this research work was to diagnose the vulnerability of terrestrial ecosystems to S deposition in Atasta region in Campeche State, Mexico, comprising two simultaneous sampling programs in both, soil and atmospheric deposition on an annual basis during three climatic periods: dry, rainy and cold fronts seasons. From the estimation of soil properties estimation (pH, texture, mineralogy, cationic exchange capacity, and basis saturation %), critical loads and sensitivity classes were assigned to sampled soils based according to the empirical methodology proposed by UNECE. During the dry season, 10 sites fell into sensitivity class 2 (moderately sensitive) and 3 (sensitive). On the other hand, during the rainy season, 8 sites showed a sensitivity class 1 (highly sensitive) and 2 sites presented a sensitivity class 2 (moderately sensitive);whereas along cold fronts season, 12 sites fell into sensitivity class 1 that corresponds to highly sensitive. Sensitivity classes showed a seasonal trend, with a higher sensitivity during rainy and cold fronts seasons;this agrees with the kind of sources influencing on the study area as a result of the prevailing meteorology during these climatic periods. Likewise, S concentration in atmospheric deposition was determined by turbidimetric method, and S deposition fluxes were estimated from surface area of the funnel opening of the sampling device and the sampling period. S deposition fluxes ranged from 0.29 and 14.06 kg S ha-1·yr-1;with a mean value of 8.57 kg S ha-1·yr-1. From the comparison between the current deposition rates and proposed critical loads, exceedances percentages were obtained (from 1.65% to 62.8%) and mapped to identify critical zones of S deposition in the studied area. It was established the important role which mangrove vegetation plays in the attenuation of the potential ecological effects on terrestrial ecosystems of the study area associated to atmospheric deposition.

关键词： Atmospheric Deposition Critical Loads Sulfur Campeche Mexico

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铁路能力评价分析

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四川建材 2014年第4期40卷 129-136页

作者：饶武 M.abril F.Barber L.Ingolotti M.A.Salido p.Tormos A.Lova 中铁二院工程集团有限责任公司四川成都610031

本文首先回顾了目前进行通过能力分析的主要概念和方法,然后介绍了一种能够进行多种能力分析的自动化工具。能力的大小主要取决于各种固定设备、移动设备以及行车组织方案。所以,本文以西班牙部分铁路设备为对象展开了一项关于影响铁路... 详细信息

本文首先回顾了目前进行通过能力分析的主要概念和方法,然后介绍了一种能够进行多种能力分析的自动化工具。能力的大小主要取决于各种固定设备、移动设备以及行车组织方案。所以,本文以西班牙部分铁路设备为对象展开了一项关于影响铁路通过能力主要因素的深入研究。研究结果描述了各种因素对能力的影响,影响因素包括列车速度、营业站、列车的不均衡性、信号机间距和列车时刻表的鲁棒性。

关键词：通过能力铁路时间表列车计划编制

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高血压患者脑小血管病变化对认知功能的影响

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中华高血压杂志 2019年第2期27卷 199-199页

作者： Jiménez-Balado J Riba-Llena I abril O Garde E penalba A Ostos E Maisterra O Montaner J Noviembre M Mundet X Ventura O pizarro J Delgado p 赵狄练桂丽

高血压是脑小血管病进展与认知功能障碍的主要危险因素之一。该研究旨在探讨高血压患者脑小血管病损伤变化与认知功能减退及轻度认知功能障碍的关系。该研究的数据从ISSYS队列(探讨高血压无症状性脑卒中:一个磁共振成像研究)中获得,其... 详细信息

高血压是脑小血管病进展与认知功能障碍的主要危险因素之一。该研究旨在探讨高血压患者脑小血管病损伤变化与认知功能减退及轻度认知功能障碍的关系。该研究的数据从ISSYS队列(探讨高血压无症状性脑卒中:一个磁共振成像研究)中获得,其是一项纵向人群研究,纳入基线无痴呆及脑卒中,年龄50~70岁的高血压患者。

关键词：轻度认知功能障碍无症状性脑卒中高血压患者小血管病变认知功能减退磁共振成像危险因素人群研究

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