全文获取类型
收费全文 | 430篇 |
免费 | 77篇 |
专业分类
各国政治 | 3篇 |
工人农民 | 4篇 |
世界政治 | 1篇 |
外交国际关系 | 18篇 |
法律 | 333篇 |
中国共产党 | 1篇 |
中国政治 | 20篇 |
政治理论 | 11篇 |
综合类 | 116篇 |
出版年
2024年 | 2篇 |
2023年 | 15篇 |
2022年 | 5篇 |
2021年 | 5篇 |
2020年 | 23篇 |
2019年 | 15篇 |
2018年 | 11篇 |
2017年 | 23篇 |
2016年 | 11篇 |
2015年 | 23篇 |
2014年 | 26篇 |
2013年 | 40篇 |
2012年 | 26篇 |
2011年 | 29篇 |
2010年 | 17篇 |
2009年 | 29篇 |
2008年 | 45篇 |
2007年 | 26篇 |
2006年 | 29篇 |
2005年 | 16篇 |
2004年 | 11篇 |
2003年 | 16篇 |
2002年 | 12篇 |
2001年 | 8篇 |
2000年 | 6篇 |
1999年 | 5篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 6篇 |
1994年 | 1篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 1篇 |
排序方式: 共有507条查询结果,搜索用时 15 毫秒
51.
Hand preference may be crucial in the forensic domain, notably in cases where the assailant is known to be left‐handed and the defendant claims to be right‐handed (or vice versa). In such cases, forensic psychologists or physicians may be asked to test the hand preference of the defendant. However, hand preference may be faked. The case described here illustrates this problem and addresses potential solutions. We also present preliminary data showing that a standard instrument for measuring handedness is sensitive to feigning. We conclude that when hand preference is determined, multiple sources of information should be assessed in order to identify possible feigning. 相似文献
52.
《Forensic Science International: Genetics Supplement Series》2019,7(1):12-13
Ancestry testing can provide valuable information in forensic applications, but its efficiency has not yet been properly evaluated when used in highly admixed populations. In this work we tested a commercial ancestry panel containing 165 autosomal SNPs in 30 Dubai residents. Most of the tested individuals displayed, as expected, an admixed profile, but in general the main inferred ancestry was of Southwest Asian extraction, testifying that these tests can provide useful complementary forensic information. 相似文献
53.
急性心肌缺血的发生是心源性猝死的最常见原因,而如何认定早期急性心肌缺血是法医学研究的热点,同时也是临床预防心肌梗死发生的重要环节。本文通过对缺血修饰白蛋白(ischemia modified albumin,IMA)和心型脂肪酸结合蛋白(heart-type fatty acid binding protein,H-FABP)的结构、功能、临床应用价值及法医学中的应用前景进行综述,旨在分析二者是否可作为早期心肌缺血的生化检测指标用于心源性猝死的诊断,并为今后选择心源性猝死的科研方向提供借鉴。 相似文献
54.
Andreola S Gentile G Battistini A Cattaneo C Zoja R 《Journal of forensic sciences》2011,56(3):771-774
Demonstration of the presence of lead residues deriving from gunshot in skin and underlying tissues is essential for the correct forensic analysis of numerous legal cases. Optical microscopy remains the fastest, cheapest diagnostic technique, even though its sensitivity and specificity are poor because of the scarce quantity of histological tissue that can be examined and possible environmental lead pollution. To confirm the presence of lead from gunshot residues, we applied to histological sections of human skin a technique proposed by Owens and George in 1991 for macroscopic detection of lead on the clothing of shooting victims, involving a reaction with sodium rhodizonate and subsequent confirmation by color change on application of HCl. Our results demonstrate the technical possibility of using this macroscopic technique even on histological samples and support the need for further studies on a larger series of cases correlated with the type of ammunition and firing distance. 相似文献
55.
Benjamin J. Routon B.S. Brandon B. Kocher B.S. John V. Goodpaster Ph.D. 《Journal of forensic sciences》2011,56(1):194-199
Abstract: Pyrodex ® and Triple Seven ® are black powder substitutes that often find use as fillers in improvised explosive devices, such as pipe bombs. These propellants have essentially the same overall appearance and oxidizers, but different fuels. For example, Pyrodex ® contains sulfur, sodium benzoate, and dicyandiamide (DCDA), whereas Triple Seven ® lacks sulfur but also contains 3‐nitrobenzoic acid. In this method, intact particles and postblast solid residues were reacted with bis(trimethylsilyl)trifluoroacetamide + 1% trimethylchlorosilane in acetonitrile for 30 min at 60°C. The resultant trimethylsilyl derivatives of the organic fuels were then analyzed by gas chromatography–mass spectrometry. Each derivative was clearly resolved from other components, and high‐quality mass spectra were obtained. In addition, characteristic fragments resulting from loss of a methyl radical from the molecular ion (m/z 163 for sulfur, m/z 171 for DCDA, m/z 179 for benzoic acid, and m/z 224 for nitrobenzoic acid) were able to be monitored. 相似文献
56.
57.
58.
高职高专实用英语口语教学研究 总被引:1,自引:0,他引:1
培养学生的英语应用能力是教育部高教司对高职高专教育英语教学的战略定位。本文分析了高职高专学生英语口语能力现状与《基本要求》教学目的之间存在的差距及产生这一差距的原因,并提出应从教、学、考三个方面来提高高职高专学生的英语口语能力。 相似文献
59.
60.
Kelly M. Brinsko M.S. 《Journal of forensic sciences》2010,55(4):915-923
Abstract: Fibers that are termed “eco‐friendly” or “biodegradable” by manufacturers are increasingly being used in textile products such as apparel and carpeting to appeal to the ever more environmentally aware public. As such, these modern fibers are expected to begin showing up more often in forensic casework, and it is important that the forensic examiner recognize them. This study employed polarized light microscopy (PLM) and Fourier transform infrared (FTIR) microspectroscopy to characterize selected fibers of azlon, polylactic acid (PLA), cellulose composites of alginate or chitin, and bamboo (viscose rayon). Fiber cross‐sections, refractive indices, melting points, solubilities, and FTIR measurements were conducted. Results indicate that the azlons and PLA fibers are easily distinguishable from other textile fibers by their optical and chemical properties. The cellulose composites show only small differences in comparison with other cellulose‐based fibers, while bamboo viscose rayon is indistinguishable from normal viscose rayon. 相似文献