全文获取类型
收费全文 | 2162篇 |
免费 | 59篇 |
专业分类
各国政治 | 151篇 |
工人农民 | 59篇 |
世界政治 | 93篇 |
外交国际关系 | 63篇 |
法律 | 1591篇 |
中国政治 | 9篇 |
政治理论 | 244篇 |
综合类 | 11篇 |
出版年
2020年 | 35篇 |
2019年 | 37篇 |
2018年 | 49篇 |
2017年 | 67篇 |
2016年 | 61篇 |
2015年 | 29篇 |
2014年 | 38篇 |
2013年 | 214篇 |
2012年 | 60篇 |
2011年 | 74篇 |
2010年 | 43篇 |
2009年 | 40篇 |
2008年 | 64篇 |
2007年 | 65篇 |
2006年 | 64篇 |
2005年 | 67篇 |
2004年 | 71篇 |
2003年 | 72篇 |
2002年 | 64篇 |
2001年 | 79篇 |
2000年 | 73篇 |
1999年 | 57篇 |
1998年 | 16篇 |
1997年 | 14篇 |
1996年 | 19篇 |
1994年 | 13篇 |
1992年 | 41篇 |
1991年 | 43篇 |
1990年 | 49篇 |
1989年 | 54篇 |
1988年 | 48篇 |
1987年 | 35篇 |
1986年 | 47篇 |
1985年 | 40篇 |
1984年 | 27篇 |
1983年 | 21篇 |
1982年 | 13篇 |
1981年 | 18篇 |
1980年 | 12篇 |
1979年 | 20篇 |
1978年 | 23篇 |
1977年 | 17篇 |
1975年 | 12篇 |
1974年 | 14篇 |
1973年 | 15篇 |
1971年 | 22篇 |
1970年 | 19篇 |
1969年 | 15篇 |
1968年 | 18篇 |
1967年 | 13篇 |
排序方式: 共有2221条查询结果,搜索用时 15 毫秒
151.
Solodun IuV Leliukh TD Maslauskaĭte LS Iaverbaum AA Ermolaeva NV Golubev SS Ul'fan RE 《Sudebno-meditsinskaia ekspertiza》2001,44(6):6-10
Morphological manifestations of narcomania in heroin users are described. Diseases associated with heroin narcomania and causes of death of heroin users are presented. Morphological manifestations at the site of injections and inflammatory reactions in parenchymatous organs are characterized. The authors pay special attention to the productive inflammation which can serve as one of the signs that confirm narcomania in cases with parenteral injections of crude heroin. The authors refer the granulomas to toxic allergic form of granulomatous hypersensitive inflammation. 相似文献
152.
Gotoh M Sakata M Endo T Hayashi H Seno H Suzuki O 《Forensic science international》2001,116(2-3):221-226
Profenofos and its metabolites were determined in a case of fatal poisoning. Little profenofos and large amounts of metabolites were detected by gas chromatography/flame photometric detection in the acid extracts of blood and urine after methylation with diazomethane. Four major metabolites containing phosphorus were identified with the synthesized metabolites, namely, despropylated profenofos, desethylated profenofos and des-S-propylated profenofos, respectively. 4-Bromo-2-chlorophenol (BCP), an aryl moiety of profenofos, was also determined in blood and urine with high performance liquid chromatograph (HPLC) as free or conjugated metabolites. 相似文献
153.
154.
155.
Rent-seeking with asymmetric valuations 总被引:1,自引:0,他引:1
This paper analyzes Tullock's rent-seeking game with asymmetric valuations for a variable range of the returns to scale parameter. A necessary and sufficient condition for a unique pure strategy Nash equilibrium is established. Equilibrium effort and expected profits are determined and subjected to comparative statics analysis. Increasing the underdog's valuation induces both players to increase their efforts. Increasing the favorite's valuation increases his effort but decreases the effort of the underdog. Expected profits increase with a player's valuation but decreases with the valuation of the competitor. The impact of the returns to scale parameter is also analyzed. 相似文献
156.
Law plays crucial roles in the field of public health, from defining the power and jurisdiction of health agencies, to influencing the social norms that shape individual behavior. Despite its importance, public health law has been neglected. Over a decade ago, the Institute of Medicine issued a report lamenting the state of public health administration, generally, and calling, in particular, for a revision of public health statutes. The Article examines the current state of public health law. To help create the conditions in which people can be healthy, public health law must reflect an understanding of how public health agencies work to promote health, as well as the political and social contexts in which these agencies operate. The authors first discuss three prevailing ways in which the determinants of health are conceptualized, and the political and social problems each model tends to create for public health efforts. The analysis then turns to the core functions of public health, emphasizing how law furthers public health work. The Article reports the results of a fifty-state survey of communicable disease control law, revealing that few states have systematically reformed their laws to reflect contemporary medical and legal developments. The Article concludes with specific guidelines for law reform. 相似文献
157.
Vock R Meinel U Geserick G Gabler W Müller E Leopold D Mattig W Grimm O Bertelmann K Sannemüller U Klein A Krause D Schröpfer D Krüger U Disse M 《Archiv für Kriminologie》1999,204(3-4):75-87
No reliable data are available on cases of lethal child abuse (by active force) in the area of the former German Democratic Republic. In a multicenter study we therefore examined the police and court records for such cases occurring in the period 1 January 1985 to 2 October 1990 in the entire area of the former German Democratic Republic. RESULTS: The study center received information on 39 cases of lethal child abuse which correspond to approximately 7 cases per year. However, a low percentage of undetected crimes which cannot be determined more precisely has to be taken into consideration. Almost 40% of the victims were younger than 1 year, 73% of the victims showed indications of repeated ill-treatment. The effects caused by using direct blunt forces, against the head in particular, were by far the most frequent causes of death. The male contact person (the victim's father, brother or stepfather as well as the life companion of the child's mother in particular) killed the child in most of the cases. As far as it is known, 37% of the male/female offenders suffered from chronic alcoholism; 32% of the male/female offenders were under the influence of alcohol when the crime happened. 83% of the male/female offenders who were found guilty made a confession shortly after the crime had happened or during the interrogations. Almost all the male/female offenders were sentenced to prison (the duration of the imprisonment varied between one year and for life). Due to the considerably lower section rate compared to the one in the German Democratic Republic, it is to fear that each second fatal child abuse is not detected in the new federal states. 相似文献
158.
Evaluation of prostate-specific antigen (PSA) membrane test assays for the forensic identification of seminal fluid. 总被引:4,自引:0,他引:4
M N Hochmeister B Budowle O Rudin C Gehrig U Borer M Thali R Dirnhofer 《Journal of forensic sciences》1999,44(5):1057-1060
Prostate specific antigen (PSA, also known as p30), a glycoprotein produced by the prostatic gland and secreted into seminal plasma, is a marker used for demonstrating the presence of seminal fluid. Methods for the detection of PSA include Ouchterlony double diffusion, crossover electrophoresis, rocket immuno-electrophoresis, radial immunodiffusion, and ELISA. The extremely sensitive ELISA technique can detect PSA in concentrations as low as approximately 4 ng/mL. However, all these techniques are cumbersome and time consuming to perform in forensic laboratories, especially when only a few samples per week are processed. Various membrane tests are currently used in clinical settings to screen a patient's serum for the presence of PSA at levels greater than 4 ng/mL. In this study we evaluated three immunochromatographic PSA membrane tests by analyzing semen stains stored at room temperature for up to 30 years, post-coital vaginal swabs taken at different time after intercourse, semen-free vaginal swabs, and various female and male body fluids, including urine. The data demonstrate that PSA membrane test assays offer the same sensitivity as ELISA-based tests and provide a rapid approach for the forensic identification of seminal fluid. Furthermore, when the supernatant from a DNA extraction is used for the assay, there is essentially no DNA consumption for determining the presence of PSA in a forensic sample. 相似文献
159.
R V Babakhanian G V Ivanova T A Kostyrko A E Safra? O D Iagmurov 《Sudebno-meditsinskaia ekspertiza》1999,42(3):6-9
Histological analysis of the viscera in experimental poisoning with psilocybin-containing mushrooms showed nonspecific changes in all examined organs, presenting as expressed hemocirculatory disorders and intracellular dystrophy. Quantitative histochemical analysis showed appreciable shifts in the activities of enzymes involved in the cytoplasmic and mitochondrial redox processes and of specific enzymes involved in nerve tissue metabolism. This may reflect some features in the direct effects of narcotic alkaloids contained in psilocybin-producing mushrooms. 相似文献
160.
Macro- and trace element composition of hairs on the head, chest, in the armpits, and on the pubis in the population of Asia, Africa, and Latin America adapted and not to the climate, geographic and ecological conditions of the Russian Federation (Moscow) is studied by spectrography (DPS-13 spectrograph). Element composition of residents of 16 countries is analyzed by variation statistics methods using PC: Lebanon, Syria, Yemen, Bahrain, India, Sierra Leone, C?te d'Ivoire, Rwanda, Kenya, Sudan, Mexico, Ecuador, Bolivia, Brasilia, Columbia, and Chile. Hairs from residents of East Europe (Russians, Byelorussians, Ukrainians) living in Moscow for 6-8 years (adapted) were the reference for comparison. A total of 371 specimens of hairs were examined. Hairs from adapted and not adapted residents of the above-listed countries and continents differ significantly from each other and from the hairs of Russians, Byelorussians, and Ukrainians living in Moscow. 相似文献