首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   180篇
  免费   7篇
各国政治   29篇
工人农民   7篇
世界政治   17篇
外交国际关系   24篇
法律   64篇
中国政治   4篇
政治理论   41篇
综合类   1篇
  2023年   5篇
  2022年   1篇
  2021年   8篇
  2020年   17篇
  2019年   7篇
  2018年   12篇
  2017年   8篇
  2016年   12篇
  2015年   5篇
  2014年   6篇
  2013年   25篇
  2012年   2篇
  2011年   3篇
  2010年   3篇
  2009年   2篇
  2008年   4篇
  2007年   5篇
  2006年   4篇
  2005年   2篇
  2004年   2篇
  2003年   3篇
  2002年   8篇
  2001年   2篇
  2000年   4篇
  1999年   2篇
  1998年   4篇
  1997年   6篇
  1996年   2篇
  1995年   4篇
  1993年   3篇
  1992年   4篇
  1991年   2篇
  1990年   2篇
  1989年   1篇
  1987年   1篇
  1985年   1篇
  1983年   1篇
  1974年   1篇
  1973年   2篇
  1967年   1篇
排序方式: 共有187条查询结果,搜索用时 421 毫秒
61.
62.
In January 2012, 664 cases of pyrimethamine toxicity and 151 deaths were reported among cardiac patients that had recently received free medicines from pharmacy of Punjab Institute of Cardiology, Lahore, Pakistan. These patients, ages ranged from 58 to 75 years, were prescribed simvastatin, clopidogrel, aspirin soluble, isosorbide mononitrate, and amlodipine. On examination of medications being given to them, it was found that a particular batch of isosorbide mononitrate tablets was contaminated with 50 mg pyrimethamine. Cardiac patients were taking isosorbide contaminated with pyrimethamine twice daily (100 mg pyrimethamine/day), whereas therapeutic dose of pyrimethamine for malaria is 25 mg/week. Postmortem urine, cardiac blood, and femoral blood specimens of three deceased males were submitted to author's laboratory for analysis. Postmortem toxicological analysis revealed that pyrimethamine concentration fell within the range of 1–10 μg/mL by liquid chromatography. Clinical, autopsy, histopathological, and toxicological findings strongly suggested toxicity due to pyrimethamine accumulation that resulted in deaths of these cardiac patients.  相似文献   
63.
Forensic casework samples often include human hairs, teeth, and bones. Hairs with roots are routinely processed for DNA analysis, while rootless hairs are either not tested or processed using mitochondrial DNA. Bones and teeth are submitted for human remains identifications for missing persons and mass disaster cases. DNA extraction from these low templates and degraded samples is challenging. The new InnoXtract DNA extraction method utilizes magnetic beads that are optimized to bind small DNA fragments, as small as 100 base pairs, to purify high-yield DNA from compromised samples. This validation study evaluates InnoXtract's ability to obtain amplifiable DNA from samples such as rootless hairs and skeletal remains. Studies performed include sensitivity, stability, repeatability, reproducibility, non-probative samples, and comparison to standard organic extractions. Sensitivity studies demonstrate average yield recoveries ranging from 53% to 100% and 73% to 85% for the InnoXtract hair and bone methods, respectively. Studies demonstrate consistent results across a range of sample types, such as insulted and un-insulted bone and teeth, as well as hair shafts from donors of various ages, gender, race, and hair characteristics. The InnoXtract bone method outperformed organic extraction. The method was successfully automated on a MagMAX™ Express-96, with recoveries over 70% relative to the manual version. InnoXtract has the potential as an automated high-throughput, high-yield bone extraction method with 6 h of total extraction time for up to 96 samples. The validation study results demonstrate that the InnoXtract kits produce high-yield and high-quality DNA from compromised bone, teeth, and hair shaft samples.  相似文献   
64.
In a transect along Indus River after the 2010 floods in Pakistan, this article explores the relationship between the use and duration of use of basic services, among those who recovered well and those who did not, using non-parametric statistical testing in a quasi-experimental design. The research shows a clear and strong correlation between access and duration of usage of certain services before the disaster, and the rate of recovery in each location. This analysis demonstrates a relatively robust and cost-effective methodology to identify and prioritise development interventions that build resilience against climatic shocks that are not undertaken at the cost of poverty reduction.  相似文献   
65.
Pakistan is generally included in most discussions of ‘failing states’ that pose the maximum danger to global security, with the rise of Islamic militancy being the most commonly cited reason for the ‘failure’. However, Islamic militancy is a result of impending state failure, not a cause of it. This article argues that the state's inability, caused by decades of systemic corruption, to provide any appreciable level of public goods or services, broadly defined, is responsible for the delegitimization of the state and its inability to maintain law and order in the cities or suppress Islamist insurgents in the rest of the country.  相似文献   
66.
67.
68.
A rapid colorimetric method for detection of p‐phenylenediamine (PPD) in various biological samples is developed. The o‐cresol test for acetaminophen detection has been modified to detect PPD in blood, urine, gastric contents, and liver. After precipitating protein with trichloroacetic acid solution (2 mL, 10% w/v), biological specimens were required to convert PPD metabolites to PPD by acid hydrolysis. Finally, o‐cresol solution (1 mL, 1% w/v), hydrogen peroxide (200 μL, 3%v/v), and concentrated ammonium hydroxide (0.5 mL) were added in the biological samples. The presence of PPD was indicated by formation of violet color which was turned to bluish green color within 10–15 min. The limit of detection was found to be 2 mg/L in blood, urine, and gastric contents and 2 mg/Kg in liver. This method is also free from any potential interference by p‐aminophenol, acetaminophen, and other amine drugs under test conditions. This method was successfully employed to thirteen fatal cases of PPD poisoning.  相似文献   
69.
This paper examines the structure and modus operandi of South Asian criminal organisations operating in the UK. It is based on empirical research conducted between 2005 and 2006 among prisoners sentenced for drug offences, a number of drug distributors operating in the market, and observers with a knowledge of the drugs business working for the police force or for rehabilitation services. First, the paper offers an overview of the debate on organised crime, and after a methodological note, the research findings are utilised to propose a typology. Hypotheses are formulated around the illicit drug enterprises involved in British markets. Finally, the implications for law enforcement with respect to these enterprises are discussed.
Vincenzo RuggieroEmail:
  相似文献   
70.
The current study assessed the perceptions of acceptable sexual behaviour of coaches and the occurrence of sexual harassment among female student in India. A sample of 180 Indian female student-athletes at intercollegiate and inter-university levels with male coaches participated in this study. A questionnaire on sport-specific Touch and Behaviour versus Unwanted Intimacy from coaches (Vanden Auweele et al., 2008), consisting of 41 items on a 5-point rating scale was used. The participants were asked to indicate the acceptability of specific coaching behaviour as well as the occurrence of the behaviour represented in each item. The acceptability of the behaviour was determined by means and standard deviations, while the occurrence was determined by frequencies. Factor analysis was performed to determine the structure of the coaches’ behaviour and athletes’ acceptability thereof, which yielded four factors. Cronbach’s alpha was used to determine the internal consistency of the extracted items on each factor. Two factors, namely, unwanted sexual behaviour and inappropriate verbal and physical sexual behaviour, were regarded by athletes as very serious and unacceptable coach behaviour, while a third factor represented context-dependent suspicious behaviour (a grey area in which athletes differ in their opinion) and was perceived to be serious and unacceptable. A fourth factor represented acceptable behaviour. The occurrence of very serious and unacceptable behaviour was reported by 31% of the female athletes.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号