全文获取类型
收费全文 | 12353篇 |
免费 | 357篇 |
专业分类
各国政治 | 848篇 |
工人农民 | 478篇 |
世界政治 | 1000篇 |
外交国际关系 | 564篇 |
法律 | 6620篇 |
中国共产党 | 2篇 |
中国政治 | 154篇 |
政治理论 | 2915篇 |
综合类 | 129篇 |
出版年
2020年 | 166篇 |
2019年 | 186篇 |
2018年 | 263篇 |
2017年 | 289篇 |
2016年 | 315篇 |
2015年 | 247篇 |
2014年 | 275篇 |
2013年 | 1658篇 |
2012年 | 299篇 |
2011年 | 401篇 |
2010年 | 309篇 |
2009年 | 322篇 |
2008年 | 347篇 |
2007年 | 336篇 |
2006年 | 317篇 |
2005年 | 284篇 |
2004年 | 311篇 |
2003年 | 338篇 |
2002年 | 313篇 |
2001年 | 429篇 |
2000年 | 404篇 |
1999年 | 369篇 |
1998年 | 204篇 |
1997年 | 176篇 |
1996年 | 163篇 |
1995年 | 142篇 |
1994年 | 140篇 |
1993年 | 147篇 |
1992年 | 210篇 |
1991年 | 213篇 |
1990年 | 185篇 |
1989年 | 189篇 |
1988年 | 201篇 |
1987年 | 196篇 |
1986年 | 211篇 |
1985年 | 191篇 |
1984年 | 170篇 |
1983年 | 203篇 |
1982年 | 131篇 |
1981年 | 98篇 |
1980年 | 105篇 |
1979年 | 119篇 |
1978年 | 101篇 |
1977年 | 88篇 |
1976年 | 93篇 |
1975年 | 73篇 |
1974年 | 75篇 |
1972年 | 65篇 |
1971年 | 68篇 |
1969年 | 61篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
Isolation of the DNA minisatellite probe MZ 1.3 and its application to DNA 'fingerprinting' analysis 总被引:1,自引:0,他引:1
U Schacker P M Schneider B Holtkamp E Bohnke R Fimmers H H Sonneborn C Rittner 《Forensic science international》1990,44(2-3):209-224
A minisatellite probe, MZ 1.3, detecting hypervariable fragment patterns was isolated from a human genomic library. A repetitive sequence of 27 bp length was identified which is contained in the probe approx. 40 times. The MZ 1.3 repeat shows variable homology of 53-73% to the repetitive sequence of the protein III gene of the bacteriophage M13 genome. Polymorphic restriction fragment patterns were found with MZ 1.3 using the enzymes Hinf I, BstN I, Hae III, Mbo I, PstI/Pvu II, and Rsa I. An average of 18 polymorphic fragments was observed using Hinf I as enzyme. The band sharing frequency after Hinf I digestion among unrelated individuals was determined to be 23.8 +/- 7.2%. An example for the application of MZ 1.3 to paternity testing in an incest case is given. The probe can be used with radioactive or non-radioactive detection systems. An approach is presented to compare polymorphic fragment patterns from individuals obtained by independent gel runs on the basis of relative band positions (RBP) and calculated in a computerized analysis. 相似文献
43.
Richard Lewis Robert McNabb Helen Robinson & Victoria Wass 《Journal of law and society》2002,29(3):406-435
This article examines the effect upon damages for personal injury of methods used in the United States of America to calculate loss of future earnings. The work of lawyers is examined from the perspective of labour economists. The damages calculated by using these alternative methods are compared with those actually awarded in over a hundred cases determined by courts in England and Wales. This interdisciplinary and comparative study reveals that the tort system fails to satisfy one of its main objectives in that it does not provide recipients of damages with 'full' compensation. 相似文献
44.
It is a central tenet of most contemporarytheories of justice that the badly-off have aright to some of the resources of the well-off.In this paper, I take as my starting point twoprinciples of justice, to wit, the principle ofsufficiency, whereby individuals have a rightto the material resources they need in order tolead a decent life, and the principle ofautonomy, whereby once everybody has such alife, individuals should be allowed to pursuetheir conception of the good, and to enjoy thefruits of their labour in pursuit of suchconception. I also endorse the value offairness, whereby the right person orinstitution makes the decision as to whether tobring about justice.I show that justice and fairness can besatisfied only if we all enjoy a combination ofprivate and collective rights over the world.In making that case, I shall argue that the setof ownership rights I advocate differs fromreadily available conceptions of restrictedprivate ownership in two important respects.First, it is such that in some circumstances,two individuals or more can have control rightsover the same property at the same time, not,as is standardly the case in legal systems, bycontracting with one another (through gifts andjoint purchase), but simply on grounds ofjustice. Second, it allows that, if necessary,property-owners be expropriated from theirproperty without compensation. 相似文献
45.
On the basis of the uncertainty management model, we argue here that when people are uncertain about an organization's trustworthiness, they may resolve the question how they should react toward the organization by relying on their perceptions of the organization's procedures. As a consequence, we predicted that the reactions of parents whose child was in a day care center would be strongly influenced by their perceptions of the procedures used by the organization that was responsible for their children's day care when the parents would be uncertain about the organization's trustworthiness. However, when parents would be certain that the organization could be trusted they would be less in need of procedural information, yielding less strong effects of perceived procedure on parents' reactions. The findings of a survey study corroborate this line of reasoning. In the discussion it is argued that these findings suggest that people especially rely on their perceptions of procedures when they are uncertain about important aspects of their lives, such as the trustworthiness of organizations that are responsible for their children's day care. 相似文献
46.
47.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample. 相似文献
48.
49.
50.