全文获取类型
收费全文 | 494篇 |
免费 | 30篇 |
专业分类
各国政治 | 16篇 |
工人农民 | 79篇 |
世界政治 | 45篇 |
外交国际关系 | 29篇 |
法律 | 231篇 |
中国政治 | 1篇 |
政治理论 | 122篇 |
综合类 | 1篇 |
出版年
2022年 | 2篇 |
2021年 | 4篇 |
2020年 | 9篇 |
2019年 | 22篇 |
2018年 | 17篇 |
2017年 | 25篇 |
2016年 | 25篇 |
2015年 | 13篇 |
2014年 | 20篇 |
2013年 | 93篇 |
2012年 | 18篇 |
2011年 | 20篇 |
2010年 | 19篇 |
2009年 | 10篇 |
2008年 | 13篇 |
2007年 | 9篇 |
2006年 | 16篇 |
2005年 | 23篇 |
2004年 | 15篇 |
2003年 | 22篇 |
2002年 | 17篇 |
2001年 | 6篇 |
2000年 | 5篇 |
1999年 | 12篇 |
1997年 | 7篇 |
1996年 | 8篇 |
1995年 | 4篇 |
1993年 | 5篇 |
1992年 | 2篇 |
1990年 | 2篇 |
1988年 | 2篇 |
1987年 | 6篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 4篇 |
1980年 | 2篇 |
1979年 | 4篇 |
1978年 | 3篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 2篇 |
1968年 | 3篇 |
1967年 | 2篇 |
排序方式: 共有524条查询结果,搜索用时 8 毫秒
131.
Roger W. Byard M.D. Helen James B.DS. John Berketa B.DS. Karen Heath F.R.C.P.A. 《Journal of forensic sciences》2016,61(2):545-547
The transfer of materials between victim and perpetrator was first reported by Locard in the nineteenth century. While in recent years DNA testing has been very successful in matching biological material from crime scenes to perpetrators, the following cases demonstrate that other more time‐honored methods remain useful. Two cases of lethal assault are reported where the victims had bitten their assailants resulting in fragments of the perpetrators’ skin being wedged between their teeth which were discovered during post mortem oral examinations. As the fragments were able to be matched to injuries in the perpetrators, identification was established prior to confirmatory DNA testing. In case 1 a criminal conviction for manslaughter resulted, and in case 2 the identity of the assailant was confirmed. Examination of a properly exposed and illuminated oral cavity may provide useful evidence in assault cases. These cases represent an unusual dental variant of Locard's principle. 相似文献
132.
133.
Helen Bequaert Holmes 《Policy Sciences》1994,27(2-3):221-245
Can the use of DNA fingerprinting reduce the frequency of rape? Feminist technology assessment is used here to evaluate this new forensic technique, which distinguishes between persons by differences in DNA sequences in variable regions of their chromosomes. Although everyone's DNA pattern is unique, the statistical degrees of difference among sub-populations within ethnic and racial groups are not fully known. The technique is beset by laboratory errors, difficulties in interpretation, and lack of quality control. Policy analysts may also be troubled by the politics behind the harassment of expert witnesses, the rejection by journals of critical articles, the influence of the FBI on federal assessment reports, and the inequitable distribution of costs and benefits. The cases of British rapist-murderer Colin Pitchfork, San Diego rape victim Alicia Wade, and eight exonerated convicts demonstrate how the technique can clear probably innocent rape suspects, but they illustrate little rape-prevention capacity. If DNA testing accurately exonerates a suspect, then the police may continue searching; yet, a test with greater power to exonerate may let criminals escape and may lower the credibility of rape victims' eyewitness testimony. Furthermore, any accurate DNA typing might foster behavior to avoid apprehension or the reduction of sentences through plea-bargaining, thus having a negative effect on deterrence. Despite clear benefit to individual women in specific circumstances, this technique is likely, overall, to be disadvantageous to women. The rape victim identifies her assailant in a police line-up again before the jury in court. He is convicted and put behind bars. Some years later he hears about DNA testing and convinces his lawyer to get tests on the semen that was fund on the victim's clothes. when results show that he could not have been the rapist, he is released from prison. Yet the victim remains convinced that he was the man who attacked her and lives in fear that will find her and rape her again.1 相似文献
134.
An alleged assault was reported by a 42-year-old female, with initial medical examination revealing an apparent bite mark on the right buttock. Odontological examination, including visual assessment, full history and photographs showed that the injury did not meet the class characteristics of a human bite. Subsequent digital overlay production showed that the injury pattern was consistent with a corrugated bottle top. This case highlights the need for careful assessment of injuries alleged to be caused by human teeth. 相似文献
135.
Kreuzer-Martin HW Chesson LA Lott MJ Dorigan JV Ehleringer JR 《Journal of forensic sciences》2004,49(5):954-960
The stable isotope ratios of a seized pathogen culture could potentially reveal information about the environment in which the agent was produced. In this paper we describe general relationships between stable isotopes of carbon, nitrogen, and hydrogen in bacteriological culture media and spores of Bacillus subtilis, an endospore-forming soil bacterium. In numerous media that varied both in nutrient composition and water stable isotope ratios, medium to spore enrichment in carbon isotopes was 0.3 +/- 2.0% per thousand (parts per thousand), and in nitrogen, 4.5 +/- 0.7% per thousand. We achieved mass balance for the contribution of hydrogen isotopes from nutrients (70%) and water (30%) to spores in independent experiments by varying the isotope ratios of nutrients or water. A model was derived for predicting the isotope ratio values of spores from those in nutrients and water. 相似文献
136.
137.
Drummer OH Gerostamoulos J Batziris H Chu M Caplehorn JR Robertson MD Swann P 《Forensic science international》2003,134(2-3):154-162
The incidence of alcohol and drugs in fatally injured drivers were determined in three Australian states; Victoria (VIC), New South Wales (NSW) and Western Australia (WA) for the period of 1990-1999. A total of 3398 driver fatalities were investigated which included 2609 car drivers, 650 motorcyclists and 139 truck drivers. Alcohol at or over 0.05 g/100ml (%) was present in 29.1% of all drivers. The highest prevalence was in car drivers (30.3%) and the lowest in truckers (8.6%). WA had the highest rate of alcohol presence of the three states (35.8%). Almost 10% of the cases involved both alcohol and drugs. Drugs (other than alcohol) were present in 26.7% of cases and psychotropic drugs in 23.5%. These drugs comprised cannabis (13.5%), opioids (4.9%), stimulants (4.1%), benzodiazepines (4.1%) and other psychotropic drugs (2.7%). 8.5% of all drivers tested positive for Delta(9)-tetrahydrocannabinol (THC) and the balance of cannabis positive drivers were positive to only the 11-nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid (carboxy-THC) metabolite. The range of THC blood concentrations in drivers was 0.1-228 ng/ml, with a median of 9 ng/ml. Opioids consisted mainly of morphine (n=84), codeine (n=89) and methadone (n=33), while stimulants consisted mainly of methamphetamine (n=51), MDMA (n=6), cocaine (n=5), and the ephedrines (n=61). The prevalence of drugs increased over the decade, particularly cannabis and opioids, while alcohol decreased. Cannabis had a larger prevalence in motorcyclists (22.2%), whereas stimulants had a much larger presence in truckers (23%). 相似文献
138.
139.
140.