全文获取类型
收费全文 | 10689篇 |
免费 | 405篇 |
专业分类
各国政治 | 753篇 |
工人农民 | 466篇 |
世界政治 | 913篇 |
外交国际关系 | 502篇 |
法律 | 6077篇 |
中国共产党 | 2篇 |
中国政治 | 144篇 |
政治理论 | 2136篇 |
综合类 | 101篇 |
出版年
2023年 | 58篇 |
2021年 | 63篇 |
2020年 | 169篇 |
2019年 | 215篇 |
2018年 | 296篇 |
2017年 | 334篇 |
2016年 | 336篇 |
2015年 | 268篇 |
2014年 | 304篇 |
2013年 | 1401篇 |
2012年 | 324篇 |
2011年 | 384篇 |
2010年 | 272篇 |
2009年 | 271篇 |
2008年 | 309篇 |
2007年 | 295篇 |
2006年 | 280篇 |
2005年 | 233篇 |
2004年 | 273篇 |
2003年 | 277篇 |
2002年 | 192篇 |
2001年 | 376篇 |
2000年 | 356篇 |
1999年 | 307篇 |
1998年 | 161篇 |
1997年 | 110篇 |
1996年 | 117篇 |
1995年 | 111篇 |
1994年 | 113篇 |
1993年 | 111篇 |
1992年 | 163篇 |
1991年 | 160篇 |
1990年 | 151篇 |
1989年 | 140篇 |
1988年 | 159篇 |
1987年 | 161篇 |
1986年 | 162篇 |
1985年 | 150篇 |
1984年 | 151篇 |
1983年 | 156篇 |
1982年 | 94篇 |
1981年 | 67篇 |
1980年 | 80篇 |
1979年 | 99篇 |
1978年 | 78篇 |
1977年 | 68篇 |
1976年 | 69篇 |
1975年 | 60篇 |
1972年 | 57篇 |
1971年 | 56篇 |
排序方式: 共有10000条查询结果,搜索用时 375 毫秒
31.
This essay questions the soundness of a scholarly shift awayfrom refugee studies in favour of forcedmigration studies. It contends, first, that subsumingrefugee studies into the broader framework of forced migrationstudies may result in a failure to take account of the specificityof the refugee's circumstances which are defined not just bymovement to avoid the risk of harm, but by underlying socialdisfranchisement coupled with the unqualified ability of theinternational community to respond to their needs. Second, itargues that forced migration (rather than, forexample, forced migrant) studies encourages afocus on a phenomenon rather than on the personal predicaments,needs, challenges, and rights of refugees themselves. It maythus contribute to a lack of criticality in relation to policieswhich subordinate refugee autonomy to the pursuit of more systemicconcerns. The first concern is illustrated by reference to theemergence of the internally displaced personscategory, the second by reference to the determination to findand mandate durable solutions to forced migration,including to the movement of refugees. 相似文献
32.
During 2005, the European Union and China marked 30 years of diplomatic relations with much fanfare. Celebrations surrounding
the anniversary however belied the fact that throughout most of this period the European Union and China remained largely
aloof from one another. The strengthening of EU foreign policy over time, as well as the economic reforms and new outward
orientation exhibited by China have changed the dynamics of the relationship. Both sides are increasingly recognizing the
potential mutual benefits that can be accrued from a closer relationship. This paper assesses EU-China relations from both
economic and political perspectives. In terms of economics, it is clear that the EU must build stronger relations with China
if it is to accrue the benefits of access to an expanding market with over one billion people. To do so successfully however,
the EU will have to reconcile the economic and political components of its foreign policy. The EU continues to challenge the
Chinese government to reform its practices on a number of issues including human rights, democratic reform, and Tibet, all
of which remain bones of contention. How the EU achieves the balance between political constraints and economic opportunities
is the primary focus of this paper.
相似文献
Carol M. Glen (Corresponding author)Email: |
Richard C. MurgoEmail: |
33.
34.
35.
We investigated the differences in the levels of carboxyhemoglobin (COHb), cyanide (HCN) and petroleum fuels (gasoline and kerosene) between left and right ventricular bloods from fire victims. COHb was slightly, and HCN and petroleum fuels were markedly higher levels in the left than those in the right. These effects were so called 'first pass phenomena' due to the circulation, diffusion and metabolization before the deaths of fire victims. 相似文献
36.
37.
D.S.T Lo T.C Chao S.E Ng-Ong Y.J Yao T.H Koh 《Forensic Science International Supplement Series》1997,90(3):626
Blood previously acidified with aqueous saturated ammonium chloride solution was extracted with ethyl acetate. The dried extract was subjected to acetonitrile–hexane partition. The acetonitrile portion was analysed for the presence of acidic and neutral drugs by HPLC–DAD (200 mm×2.1 mm I.D. microbore ODS-Hypersil column) and GC–FID (25 m narrow-bore×0.25 mm I.D. HP-5 column with 0.33 μm film thickness). The protocol was found to be suitable for both clinical toxicology (including emergency toxicology) and postmortem toxicology. At least 66 drugs of interest were unequivocally identified by RRTs (HPLC) and UV spectra (DAD) match while another 12 were unequivocally identified by double RRTs match (HPLC and GC). Quantitation was facilitated by incorporating calibration blood standards in each assay batch. The five drugs most commonly encountered in clinical blood specimens (1150 cases) were: paracetamol (47.4% of the cases); chlormezanone (6.6%), theophylline (1.74%), naproxen (1.65%) and mefenamic acid (1.56%). The following drugs were detected in toxicologically significant quantities in postmortem blood specimens (245 cases): phenobarbitone (1.22% of the cases), naproxen (0.82%), chlormezanone (0.82%), theophylline (0.82%), carbamazepine (0.41%) and paracetamol (0.41%). 相似文献
38.
39.
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
40.
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