Simulation model of automobile power train has been built using ADVISOR,on the basis of Genetic Algorithm Tool Box,the paper takes a mini car as example to carry out performance simulation calculation and power train parametric optimization design.The result show that automobile power performance and fuel economy and emission performance have been greatly improved The power train has great influence on automobile power performance and fuel economy and emission performance.It is an important approach to optimize its matching parameters on reducing the fuel wastage,improving dynamical performance and decreasing the emission of waste gas.Genetic Algorithm is kind of global searching and optimized algorithm which integrates the principles of biological evolution with optimization technology and computer technology.ADVISOR,advanced simulation software,was developed on the basis of MATLAB/Simulink and can rapidly analyze automobile power performance,fuel economy and emission performance.It is a better approach to cope with automobile power train match optimization by integrating ADVISOR's accurate simulation with Genetic Algorithtn's searching optimization with high efficiency.

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Compressed natural gas (CNG) automobile is an emerging new energy car.How to control gas injection is the key technology of CNG electronic control system.At present,the control based on the MAP graph is used usually,but this control method has some shortages,for example larger data,poor adaptive capacity and difficulties in data updating.BP neural network control has adaptive and self-learning,nonlinear processing ability and high generalization,and faults tolerant ability in processing information.In this paper,BP neural network is used to control natural gas injection in order to solve the shortage of the MAP picture control.Simulation experiment shows thefeasibility and advantage of this method.

关键词：汽车；CNG汽车；注气控制

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Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) is an emerging technique in trauma; however, the physiological sequelae are un- quantified. The objectives of this study are to characterize the burden of reperfusion and organ dysfunction of REBOA incurred during 30 or 90 minutes of class IV shock in a survivable porcine model of hemorrhage.

关键词：主动脉；出血；医药；四肢

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World Health Day and the 50th anniversary of the World Health Organization (WHO) will be observed April 7. The focus of World Health Day this year is high blood pressure (hypertension). Although preventable, high blood pressure remains a leading risk factor for heart disease and stroke and a major cause of morbidity and mortality worldwide. Globally, prevalence of hypertension among adults is 40%, and ischemic heart disease and stroke are the first and third leading causes of premature death. CDC is working to help persons control blood pressure in multiple ways, including the Million Hearts initiative. Million Hearts aims to prevent 1 million heart attacks and strokes by 2017.

关键词：血压；高血压；死亡率；发病率；心脏病；医药

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We examined the proportion of rural children who have received dental sealants, thin plastic materials applied to the surface of the teeth to prevent or delay the development of dental decay. Our principal source of information was the Survey of Income and Program Participation (SIPP) of the Census Bureau (2001-2004 panel, the most recent SIPP version available when the project was initiated), which asked parents about childrens teeth. To confirm findings based on parental report, we also examined dental results from the 2003-2004 National Health And Nutrition Examination Survey (NHANES), which are based on professional examination of childrens teeth.

关键词：牙科密封剂；牙齿健康；口腔卫生；医药

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In this paper we propose a intelligent vehicle system design with MK60NS12VMD100 as the micro-controller unit and CMOS image sensor to obtain image information of the track.Our proposed comparator circuit instead of an A/D conversion to obtain the binary image enables us to achieve a bigger field of view and a higher processing speed.A unique algorithm to extract track information and to successfully extract the black guide line is devised.We also design a PID closed-loop control to adjust the rotate speed of driving electromotor and direction of steering electromotor.The results indicate that our design proposal is feasible.The intelligent vehicle could successfully achieve a high speed,while maintaining an excellent stability.

关键词：汽车；智能汽车；相机传感器

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The science underpinning cancer drug development has been changing rapidly in recent years because of a more mechanistic understanding of cancer. Today, hundreds of cancer therapeutics are in development, and many target specific molecules, genes, or pathways. To be most effective, preclinical studies indicate that many of these drug candidates need to be combined with other targeted agents, reflecting the complexity of multistep carcinogenesis. Clinical trials must receive regulatory approval from the Food and Drug Administration (FDA) for these innovative drug candidates before bringing them into clinical use. Not only are these trials expensive and lengthy, but they are extremely prone to failure because prediction of efficacy and toxicity in humans from findings in animal models has often proved unreliable, as has early testing in humans. Only a small percentage of drug candidates ultimately become useful therapies.

关键词：癌症临床试验；癌症药物开发；临床前研究；多步癌变；医药

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With the availability of effective anti-retroviral therapies, Human Immunodeficiency Virus (HIV) disease has become a chronic disease. For the estimated 1.2 million Americans living with HIV/AIDS, adherence to regular medical care, in addition to medications, is crucial to HIV management and overall health maintenance. Many persons living with HIV/AIDS (PLWHA) face challenges in accessing needed health care. Lack of providers who accept and treat PLWHA is one important contributor to inconsistent utilization of health care services among PLWHA. Ryan White medical providers are the safety-net providers who offer primary care and referral services to PLWHA irrespective of their insurance status or ability to pay. The report that follows addresses rural PLWHA, a population that has received little attention. First, the report examines the prevalence of HIV/AIDS in rural counties across 28 states in 2008.

关键词：艾滋病毒/艾滋病；慢性疾病；医疗保健；医药

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Estimating the age at death in the adult skeleton is problematic owing to the biological variability in age indictors and the differential skeletal response to environmental factors over an individual.s life. It is particularly difficult to accurately estimate age for individuals over 50 years of age. Thus, it is becoming increasingly important for anthropologists to improve age estimates through the use of multiple age indicators and various modalities of assessment (e.g., macroscopic and microscopic). Previously developed histological methods of age estimation using the femur demonstrate significant methodological issues that affect their reliability and accuracy. This research evaluates histological age estimation using the anterior femur and explores the biological limitations of bone turnover as an age indicator.

关键词：组织（生物学）；死亡；骨组织；医药

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The dimention for muffler has great impact on the car engine.Based on software GAMBIT,GT-POWER,SYSNOISE,through comprehensively using finite element and boundary element method,simulating and analyzing the acoustic performance for the basic noise reduction unit,establishing the finite element model,comparing the frequency and noise reduction of different volume ratio of cavity and throat tube.Simulation analysis and experimental results show that the resonant structure parameters have a direct effect on its resonant frequency and noise reduction amount,the relationship characteristic between them is that the ratio more bigger,the requency and noise reduction amount more bigger,too.And draw the two relation formulas through calculation.

关键词：汽车；消声器；声学

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