全文获取类型
收费全文 | 6152篇 |
免费 | 140篇 |
专业分类
各国政治 | 245篇 |
工人农民 | 281篇 |
世界政治 | 482篇 |
外交国际关系 | 214篇 |
法律 | 3817篇 |
中国政治 | 55篇 |
政治理论 | 1174篇 |
综合类 | 24篇 |
出版年
2021年 | 43篇 |
2020年 | 77篇 |
2019年 | 113篇 |
2018年 | 145篇 |
2017年 | 126篇 |
2016年 | 133篇 |
2015年 | 83篇 |
2014年 | 129篇 |
2013年 | 641篇 |
2012年 | 157篇 |
2011年 | 173篇 |
2010年 | 132篇 |
2009年 | 153篇 |
2008年 | 196篇 |
2007年 | 178篇 |
2006年 | 151篇 |
2005年 | 148篇 |
2004年 | 168篇 |
2003年 | 141篇 |
2002年 | 106篇 |
2001年 | 322篇 |
2000年 | 283篇 |
1999年 | 195篇 |
1998年 | 81篇 |
1997年 | 83篇 |
1996年 | 56篇 |
1995年 | 60篇 |
1994年 | 56篇 |
1993年 | 43篇 |
1992年 | 126篇 |
1991年 | 141篇 |
1990年 | 132篇 |
1989年 | 133篇 |
1988年 | 117篇 |
1987年 | 130篇 |
1986年 | 112篇 |
1985年 | 104篇 |
1984年 | 98篇 |
1983年 | 85篇 |
1982年 | 60篇 |
1981年 | 74篇 |
1980年 | 36篇 |
1979年 | 75篇 |
1978年 | 44篇 |
1975年 | 37篇 |
1974年 | 49篇 |
1973年 | 54篇 |
1972年 | 39篇 |
1971年 | 34篇 |
1970年 | 29篇 |
排序方式: 共有6292条查询结果,搜索用时 7 毫秒
911.
The genetic polymorphism of serum orosomucoid (ORM) was studied in 168 unrelated German individuals using isoelectric focusing followed by immunoprinting. Two new alleles, tentatively designated ORM1*14 and ORM2*13, were identified. The method was successfully applied to demonstrate ORM1 types in dried bloodstains. Each type of ORM1 was also correctly determined in bloodstains heated at 130 degrees C for 30 min. The results indicated that ORM1 is a new powerful genetic marker system for the grouping of bloodstains. 相似文献
912.
Sharon Silber Eric Hermann Melinda Henderson Adam Lehman 《Journal of family violence》1993,8(1):27-38
Behaviors of influence and response during a conflict negotiation task were examined in eight physically child abusing, substance abusing families in which the father was the primary abuser and eight demographically matched nonabusing families. Abusing fathers displayed more coercive patterns of influencing behavior and more negative patterns of response to other family members, including both mothers and children. Fewer differences were observed between mothers in the abusing and nonabusing families or in the children's behavior; however, mothers in the abusing families criticized their husbands more and abused children exhibited less agreement and more criticism toward their fathers. In support of Patterson's theory, abusing families exhibited relatively more reciprocated sequences of criticism and relatively fewer reciprocated sequences of agreement as compared to nonabusing families. Findings are discussed in terms of their implications for understanding interaction in child abusing families. 相似文献
913.
914.
ABO groups were investigated on skin (and muscle), bone and hair specimens from 14 Egyptian mummies dating from the Roman period. Samples were tested by the AE (absorption-elution), MA (mixed agglutination) and HIF (histo-immunofluorescence) methods, in order to evaluate the reliability of each method. For half of the mummies (7) the results were concordant on all samples (3-9 samples for each mummy) with all employed methods, suggesting an unequivocal blood group conclusion. For the other seven mummies there were discordant results with the different methods and interpretation of the results was thus inconclusive. HIF seems to be the most reliable method as specific blood group substances are identified on specific histologic structures. Failure to detect tissular ABO antigens was mainly due to excessive resin impregnation. 相似文献
915.
The 1 mu focal spot x-ray tube, which had been developed for industrial purposes, allows for the first time high grade direct radiographic magnification. The first results with this new technique in forensic medicine are presented. Due to the high proportion of soft radiation, tiny glass fragments which can not be detected with conventional radiographic techniques, are visualized in the radiographic magnification. Furthermore, these foreign bodies can clearly be differentiated from other contrasted structures, like dust particles, subcutaneous fat etc. 相似文献
916.
J T Melella S Travin K Cullen 《The Bulletin of the American Academy of Psychiatry and the Law》1989,17(3):223-232
Antiandrogen treatment of sexual offenders raises serious legal and ethical considerations in both the medical profession and in the courts. Discussion is offered on the use of antiandrogens in both an involuntary and voluntary context. The potential negative impact of this treatment modality on such constitutional issues as privacy interests, right to procreative freedom, freedom of speech and communication, and freedom from cruel and unusual punishment is explored and notable, germane court cases are presented. The need for clear ethical guidelines for the administration of this treatment is stressed. 相似文献
917.
918.
Historically and currently, jurors who have rendered verdicts in insanity cases have themselves been criticized and maligned-accused of being simplistic and biased, of lacking understanding, and of disregarding or nullifying the judge's instructions. Are the critics right? In this study, 263 mock jurors (141 adults and 122 students) were asked to decide four insanity cases without instructions, using their own best judgment, and to identify the determinative facts for them, and the meaning of those facts. Those determinative factors were then categorized, using a seven construct schema for NGRI and guilty verdicts. The results show that jurors do make discriminations among cases in terms of constructs, and that these constructs are relevant, complex, and flexible; furthermore, the jurors' lay constructs of insanity are more complex than the legal constructs of insanity. The “simplism,” it seems, lies not with the jurors but with the insanity tests. 相似文献
919.
920.
As organ transplantation procedures become accepted as standard medical practice, it is anticipated that the frequency of liability claims against transplant care providers will increase. This article examines current statutory and common law analyses of malpractice issues in transplantation, with particular attention given to issues of informed consent as they arise both for the organ donor and donee. 相似文献