全文获取类型
收费全文 | 23719篇 |
免费 | 468篇 |
专业分类
各国政治 | 1048篇 |
工人农民 | 1514篇 |
世界政治 | 1474篇 |
外交国际关系 | 904篇 |
法律 | 13285篇 |
中国政治 | 98篇 |
政治理论 | 5705篇 |
综合类 | 159篇 |
出版年
2020年 | 172篇 |
2019年 | 245篇 |
2018年 | 1525篇 |
2017年 | 1497篇 |
2016年 | 1338篇 |
2015年 | 317篇 |
2014年 | 337篇 |
2013年 | 1861篇 |
2012年 | 517篇 |
2011年 | 1274篇 |
2010年 | 1288篇 |
2009年 | 932篇 |
2008年 | 1133篇 |
2007年 | 1154篇 |
2006年 | 443篇 |
2005年 | 458篇 |
2004年 | 578篇 |
2003年 | 555篇 |
2002年 | 435篇 |
2001年 | 524篇 |
2000年 | 480篇 |
1999年 | 382篇 |
1998年 | 285篇 |
1997年 | 221篇 |
1996年 | 250篇 |
1995年 | 233篇 |
1994年 | 224篇 |
1993年 | 215篇 |
1992年 | 298篇 |
1991年 | 333篇 |
1990年 | 311篇 |
1989年 | 308篇 |
1988年 | 290篇 |
1987年 | 296篇 |
1986年 | 335篇 |
1985年 | 304篇 |
1984年 | 299篇 |
1983年 | 282篇 |
1982年 | 217篇 |
1981年 | 173篇 |
1980年 | 155篇 |
1979年 | 194篇 |
1978年 | 129篇 |
1977年 | 160篇 |
1976年 | 115篇 |
1975年 | 94篇 |
1974年 | 114篇 |
1973年 | 114篇 |
1972年 | 99篇 |
1971年 | 75篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
J Bohl H H Goebel L P?tsch W Esinger G Walther R Mattern K H Merkel 《Zeitschrift für Rechtsmedizin》1989,103(1):1-20
So far, the law in the Federal Republic of Germany still allows the injection of fresh-cell preparations from animals as a roborant to increase the vitality of the organism and to strengthen the body's immune defense system. The use of "sicca-cell" preparations was provisionally forbidden in 1987 by the Federal Health Organization (Bundesgesundheitsamt; BGA). Prohibition of fresh-cell injections would have exceeded the authority of this office, although the same serious reservations also applied in the case of this treatment method. Several publications that have appeared since 1955 have reported serious complications of this therapy, some life-threatening and some even lethal. Two further cases are now added: (1) A woman aged 69 had been receiving treatment with cell injections for 9 years. Immediately after an injection of sicca cells she collapsed and was hospitalized; 7 days thereafter she developed an ascending paralysis with increasing inability to swallow or breathe. She died 25 days after the injection as a consequence of central and peripheral respiratory failure. Autopsy revealed the alterations typical for acute Landry-Guillain-Barré-Strohl syndrome. (2) A 76-year-old healthy woman had been receiving treatment with fresh-cell preparations for several years. After an injection of cell suspensions a painful local swelling was observed. The symptoms were interpreted as the consequence of an iatrogenic local hematoma, and repeated punctures were performed to obtain blood. The patient was transferred to a surgical department for further therapy. Two days after the injection she suddenly died with signs of acute cardiovascular failure. Autopsy revealed the signs of a fulminating clostridial infection and also the characteristic signs of Landry-Guillain-Barré syndrome with involvement of the autonomic nervous system. In both cases the development of an inflammatory process in the peripheral nervous system could be interpreted as an immune-mediated allergic disease, related to the repeated injection of heterologous antigenic material containing nervous tissues. This hypothesis would also explain the two other cases already published and would be consistent with the observed perivenous leukoencephalopathy of the central nervous system. The human disease pictures correspond to the well-established animal models of EAEM (experimental allergic encephalomyelitis) and EAN (experimental allergic neuritis). The pathogenesis is discussed; the major role of the central and peripheral nervous system is stressed, with special reference to the risk of acute autonomic failure. The need for specific autopsy techniques for the investigation of the entire nervous system, including spinal cord, roots, spinal ganglia and peripheral nerves with sympathetic chains, is raised. 相似文献
212.
F I Michelman N Redlich S R Neuwirth D Carty-Bennia 《American journal of law & medicine》1989,15(2-3):197-203
This brief opposes the overturn of "Roe v. Wade" and resists weakening "Roe's central holding" that would allow states to overturn legal abortion. The brief was written for 885 law professors. "Roe" was not a "constitutional aberration," or "an exercise of raw, judicial power." Some members of the Supreme Court seem to think that the state has "an overriding interest" in protecting fetal life. Some Court members have questioned "Roe's" trimester framework. A person's decision to abort should be done privately. If women are not free to choose abortion, they will not have equality. There is an absence of "express rights of privacy and procreational freedom" in the Constitution. "Roe" was 1 instance of the Court's recognition of constitutional rights that are not named explicitly. Historical materials are drawn on to show the link between trends in society and the "judicial recognition of unenumerated rights." The most serious questions about "Roe" deal with its trimester framework. Justice Blackmun's majority opinion said that the 1st trimester of pregnancy was personal. "Roe" said that abortions created a medical risk at the beginning of the 2nd trimester. Therefore, the government was more interested in the health of the mother at that time. The state could then regulate abortion "in ways that are reasonable related to maternal health." The start of the 3rd trimester was when the fetus was viable. The right of a woman to end her pregnancy "offends powerful moral forces." Some of "Roe's" critics had their scientific facts wrong. Medical authorities think Justice O'Connor is mistaken when she says that "Roe" is "on a collision course with itself." The 23rd to 24th week of pregnancies where the fetal organs can "sustain life outside the womb." This has not changed since "Roe" was decided in 1973, nor is it likely to in the future. Some "amici" believe that the state can never have an interest in the fetus. The state can not have an interest in the fetus distinct from the woman who will give birth to it. During previability, restricting a woman's procreational rights would not be scientifically supportable. The state does have an interest in "upholding the value of human life." "Roe" is "within the mainstream" of constitutional jurisprudence and should be reaffirmed. 相似文献
213.
Daniel R. Vertrees 《The Journal of Technology Transfer》1989,14(3-4):37-42
The computer-mediated network is a moderately expanding phenomenon. A major reason for this growth is the need for transferring technology to developing nations. But because many of these nations are not traditional users of advanced technology and because even the purveyors are not yet fully comfortable with the networks, the medium is not being used as much as perhaps it ought to be. In establishing a multinational network, one should be careful to treat all potential users with equity and not create an informational elite. Part of the challenge of such a system is making it accessible to operatives in the field. An effective way of introducing a network is to blend it with existing technologies, keep the costs down and the quality of information up, provide a usable information-retrieval system, and pay attention to microand macro-ergonomics. The Adult Education Network (AEDNET) of the Kellogg Project at Syracuse University has started working on a next-generation computer-mediated network system. It is proposed that AEDNET involve three action groups in the project: researchers, those interested in social implications, and users. 相似文献
214.
215.
216.
217.
Conventional left accounts of Thatcherism have stressed the authoritarian nature of its political rhetoric. This paper suggests that convergences between the new conservatism and more fundamentalist moral positions, meeting on the ground of obscenity and violence in the media, are a relatively recent development, associated with renewed strategic concentration on the question of law and order. Indeed, the libertarian right, in adhering to a utilitarian laissez-faire understanding of private pleasures, has presided over a positive proliferation of erotic and other gratifications. We argue that in the United Kingdom the authentic constituency of the moral right is an increasingly socially marginal one, rendered progressively more so by the rapid development of technologies of communication and entertainment. 相似文献
218.
219.
220.
The presence of smeared or unsmeared ink on the skin resulting from the writing process has been observed in a number of suicide victims who have left suicide notes. The authors report a case of a palmar "cutaneous ink sign" and discuss its forensic science import. 相似文献