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Análisis de Variables Clínicas en pacientes con Obstrucción Arterial Aguda en Hospital Gustavo Fricke.
Carlo Zu？iga G.,Felipe Cardemil M.,Carolina Opazo T.,Diego Villagrán R.
Revista ANACEM , 2009,
Abstract: INTRODUCCIóN: La obstrucción arterial aguda (OAA) de extremidades es un cuadro grave, con una mortalidad cercana al 20%, por lo que requiere un diagnostico etiológico y manejo oportuno. El objetivo del presente estudio fue analizar sobrevida y variables clínicas según etiología. MATERIAL Y MéTODO: Estudio observacional analítico de casos de OAA no traumáticos atendidos entre a os 2003 y 2007 en el Hospital Dr. Gustavo Fricke, con seguimiento vía registro civil y telefónico para obtener datos actualizados. RESULTADOS: Hubo 65 episodios de OAA en 60 pacientes durante el período. Se registraron 42 embolías (64,6%), 17 trombosis (26,1%), y 6 trombosis de by pass (9,2%). Se apreciaron diferencias significativas en edad (p=0,031) y género (p=0,033). El tabaquismo presentó un LR(+) de 2,61 y claudicación intermitente LR(+) 6,67 para predecir etiología trombótica. El antecedente de accidente cerebro vascular presentó un LR(+) 4,65, el de arritmia LR(+) 12,05 y el de insuficiencia cardíaca LR(+) 8,76 para predecir etiología embólica. La sobrevida libre de amputación a 6 meses fue 90%. La sobrevida a 5 a os fue 54,2%, siendo 37,8% en el grupo con embolía y 81,8% en el con trombosis (p<0,001). Pacientes con OAA de etiología embólica tenían un OR de 5,42 (IC95% 1,53-19,12) de fallecer comparados con pacientes con etiología trombótica. DISCUSIóN: Las variables clínicas analizadas se comportarían como factores predictores de la etiologia de OAA, y por tanto del pronóstico y sobrevida de los pacientes. La mayor mortalidad del grupo de embolías se puede explicar por mayor edad, comorbilidades cardiovasculares, y embolías fatales a otros territorios.
A Novel Approach for Securing Mobile Ad Hoc Network with an Enhanced Trust Calculation Method
Amit Chauhan,Prof. R.P. Mahajan
International Journal of Computer Technology and Applications , 2012,
Abstract: A Mobile Adhoc Network is a group of wireless mobile computers in which nodes cooperate by forwarding packets for each other to allow them to communicate beyond direct wireless transmission range. Due to wide-ranging characteristics of the Ad Hoc Networks like decentralization, dynamic topology and neighbor based routing, it is always at a risk to internal as well as external attacks. In a mobile ad hoc network (MANET) where security is a crucial issue, trust plays an important factor that could improve the number of successful data transmission process. Many solutions have been proposed by the reaearchers and currently being improved in this area. Most of them are designed to operate in specific particular situations, which may fail to work successfully in other scenarios. The aim of this present work is to emphasize on the use of trust concept to enhance the security by calculating proportion based trust in a global manner. The present work offers an alternate to improve the trustworthiness of the neighbourhood and secure the routing procedure. It helps in computing the trust in neighbours and selecting the most secure route from the available ones for the data transfer. In the proposed model, trust is not calculated for any particular situation instead, it is computed based on a summary of behaviour of the node for a specific amount of period.
Paul Ehrlich: From magic bullets to chemotherapy
Lilian Chuaire,Juan Fernando Cediel
Colombia Médica , 2008,
Abstract: Paul Ehrlich is one of the most notable figures in the world of science. Considered by many as the father of chemotherapy, he was awarded the Nobel Prize in Physiology and Medicine in 1908 for his contributions to immunology. This document outlines some of his most important findings, including those who led him to create his famous magic bullets , precursors of current chemotherapeutic agents.
How do New York City’s Recent Rezonings Align With its Goals for Park Accessibility?
Simon T. McDonnell,Josiah Madar,Vicki Been
Cities and the Environment , 2010,
Abstract: In 2007, New York City adopted a long-term sustainability plan that announced a goal of ensuring that almost every New Yorker lives within a ten minute walk of a park of substantial size. At the same time, policymakers are rewriting the City’s land use map through an unprecedented series of neighborhood level rezonings that involve changing the use type and residential capacity of affected lots or groups of lots. Despite the confluence of these interventions, no research has analyzed how the rezonings interact with the City’s park infrastructure, and specifically, whether residential capacity changes in areas close to parks differ from those in areas further away. In this research, we employ a database of every tax lot in New York City to investigate how well the City-initiated rezonings correlate with the goal of providing New Yorkers with good access to the City’s parks. Our results indicate a mixed picture; while most ‘upzoned’ lots (lots where residential capacity was added) were near parks, we also find that the majority of ‘downzoned’ lots (lots where residential capacity was reduced) were also close to parks. The net impact of these rezonings was a modest increase in residential capacity for the City as a whole, but the increases were disproportionately focused in areas further from parks.
The fields the of gerontology and its challenges
Lucia Hisako Takase Gon？alves
Revista Saúde.Com , 2007,
Abstract:
News-Game Journalism: History, Current Use and Possible Futures
Burton, Jon
Australian Journal of Emerging Technologies and Society , 2005,
Abstract: As electronic computer and console games gain a larger share of the entertainment industry, more communications organizations are turning to this new form to promote, advertise and inform their audience, particularly through online delivery. Within the online news industry, interactive graphics are becoming a viable way to explain complex information and to contextualise reporting. At the same time, several games developers have produced games that reflect real world events, using elements of journalistic practice to inform their game design. This paper examines possible uses for games as news delivery systems used alongside current online journalism practices, exploring the similarities between games and interactive news graphics. The discussion then turns to current newsroom practices and possible futures for using games as news delivery tools.
SCREENING OF PLANTS FOR ANTI DERMATOPHYTE ACTIVITY
V.S. Chauhan, A. Suthar, V. Naik and K. Salkar*
International Journal of Pharmaceutical Sciences and Research , 2012,
Abstract: Mycotic infections of skin are caused by dermatophytes. Screening of plants for anti dermatophyte activity was carried out based on the literature search done. Native plants of Maharashtra (India) were screened for anti dermatophyte activity. Various plant parts from different regions were collected and then extracted with three different solvents viz. alcohol, hydro-alcohol and aqueous. The obtained extracts were subjected for anti dermatophyte activity using agar-well diffusion technique. Three different concentrations of extract were checked for activity. Two species of dermatophytes, viz. - Trichophyton and Microsporum were used in the screening assay. Out of the twenty-eight plants screened by agar diffusion method, seven were found to be active with different activity profile. Methanol extract was the most active extract. Pterospermum suberifolium, Trachyspermum ammi, Peltaphorum pterocarpum, Ixora coccinia, Persicaria glabra, Terminallia elliptica and Cicca acida showed activity at different concentrations against the two species of dermatophytes. The data obtained can be used for further studying the anti dermatophyte potential of active plants.
VARIOUS PHARMACEUTICALS INCLUDING DRUGS AND INDUSTRIAL CHEMICALS AS ENVIRONMENTAL HEALTH HAZARDS
Anita Kirrolia and Vikas Nehra*
International Journal of Pharmaceutical Sciences and Research , 2012,
Abstract: This review describes the potential and, in particular, some relevant hazards associated with the use of veterinary drugs, various pharmaceuticals and industrial chemicals that have produced serious environmental risks and affected the life of people along with other animals by posing great health risks. Risk analysis regarding these problems has also been discussed with the measures to handle the problem at global level. The most contentious residues which occur in meat, milk and eggs along with the environment are antibacterial drugs, hormonal growth promoters, heavy metals and industrial chemicals that are producing potential toxic health effects that include systemic toxicity, mutations, cancer, birth defects and reproductive disorders. Systemic toxicity involves changes in the structure and function of organs and organ systems: weight change, structural alterations and changes in organ system or whole animal function. Functional effects may include changes in the lungs, liver, kidneys, cardiovascular function, brain, nervous system activity, behavior and in production of resistance to disease. Furthermore, continued monitoring and periodic reassessment of risks posed by these contaminants is needed to detect or anticipate new problems so that appropriate action can be taken in the interests of public safety.
Editorial
Eduardo Burigo de carvalho
Poiésis , 2009,
Abstract: Nada consta.
Carbon effect in the sintered highspeed steels matrix composites – HSSMC
G. Matula
Journal of Achievements in Materials and Manufacturing Engineering , 2012,
Abstract: Goal: The goal of this monograph is development of the tool materials being the outcome of the concept of merging the surface engineering as the domain of knowledge with technology which is the powder metallurgy. The result are the fabricated materials with the gradient, high-speed steels matrix composites (HSSMC) surface layers on steel substrate, combining the mutually exclusive mechanical properties like the high surface hardness and ductility of a tool.Project/methodology/approach: Modern powder forming technologies were used for fabrication of the developed tool materials, e.g., powder injection moulding, pressureless forming, and classic compacting. Sintering was carried out in the vacuum or protective atmosphere conditions, which makes direct material hardening possible from the sintering temperature. Testing of mechanical properties encompassed hardness testing, bending strength testing, and determining the abrasion wear resistance. Detailed structural examinations were carried out to determine the effect of temperature and atmosphere during sintering on type and size of the carbide- and carbonitride precipitations. Moreover, retained austenite portion was determined after hardening and tempering.Achievements: The original achievement is development of the method of the polymer-powder slurry moulding for fabrication of coatings which, because of the binding agent degradation and sintering, form the homogeneous or gradient HSSMC surface layers on the steel substrate - completed or fabricated in the same technological process. Tool materials fabricated with this method are characteristic of high ductility of the steel core and high hardness of the surface layer.Limitations of research/applications: The assumption of the powder injection moulding technique is forming of the small elements with complex shapes and, therefore, this technology is not designed for fabrication of tools with the big overall dimensions. In case of the pressureless forming of the surface layers from HSSMC on the steel core or in case of regeneration of the tool worn out, the limitations come only from the heating device chamber size and the necessity to heat up the entire treated element.Practical applications: It is anticipated that the worked out and fabricated tool materials of the new generation will fill a gap in respect of the mechanical properties between the relatively ductile high-speed steels and the brittle sintered carbides. The newly developed method may be used in the mass- or piece production conditions making, e.g., regeneration possible of the costly tools’
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