全文获取类型
收费全文 | 5032篇 |
免费 | 61篇 |
专业分类
各国政治 | 235篇 |
工人农民 | 188篇 |
世界政治 | 348篇 |
外交国际关系 | 181篇 |
法律 | 3045篇 |
中国共产党 | 1篇 |
中国政治 | 28篇 |
政治理论 | 1035篇 |
综合类 | 32篇 |
出版年
2020年 | 64篇 |
2019年 | 73篇 |
2018年 | 91篇 |
2017年 | 107篇 |
2016年 | 108篇 |
2015年 | 102篇 |
2014年 | 91篇 |
2013年 | 512篇 |
2012年 | 137篇 |
2011年 | 124篇 |
2010年 | 110篇 |
2009年 | 111篇 |
2008年 | 134篇 |
2007年 | 133篇 |
2006年 | 129篇 |
2005年 | 127篇 |
2004年 | 133篇 |
2003年 | 125篇 |
2002年 | 112篇 |
2001年 | 185篇 |
2000年 | 177篇 |
1999年 | 133篇 |
1998年 | 69篇 |
1997年 | 55篇 |
1996年 | 47篇 |
1995年 | 60篇 |
1994年 | 52篇 |
1993年 | 49篇 |
1992年 | 91篇 |
1991年 | 89篇 |
1990年 | 107篇 |
1989年 | 87篇 |
1988年 | 83篇 |
1987年 | 85篇 |
1986年 | 108篇 |
1985年 | 111篇 |
1984年 | 77篇 |
1983年 | 79篇 |
1982年 | 51篇 |
1981年 | 49篇 |
1980年 | 46篇 |
1979年 | 50篇 |
1978年 | 57篇 |
1976年 | 37篇 |
1975年 | 46篇 |
1974年 | 64篇 |
1973年 | 56篇 |
1972年 | 42篇 |
1970年 | 35篇 |
1969年 | 44篇 |
排序方式: 共有5093条查询结果,搜索用时 0 毫秒
101.
Armstrong EJ Jenkins AJ Sebrosky GF Balraj EK 《The American journal of forensic medicine and pathology》2004,25(4):338-341
An unusual fatality secondary to oxycodone in a child is reported. A 2-year-old female child was conveyed to a local hospital after exhibiting signs of rubbing of the mouth and staggering. A hospital toxicological immunoassay screen for drugs of abuse and tricyclic antidepressants was performed on a urine sample and reported as negative. She was discharged and found unresponsive the next morning. She was conveyed to a second hospital in full cardiopulmonary arrest and despite resuscitative efforts, was pronounced dead upon arrival. An autopsy was performed and postmortem specimens were submitted and screened for drugs using mainly chromatographic techniques. Quantitation was achieved by gas chromatography with nitrogen phosphorus detection. Confirmation was performed by gas chromatography/mass spectrometry. Oxycodone was the only drug detected in the following concentrations: heart blood, 1.36 mg/L; gastric contents, 7.33 mg in 33 mL (222.34 mg/L); liver, 0.2 mg/kg; and urine, 47.23 mg/L (47,230 ng/mL). In addition, immunoassay testing of the urine was positive for the opiate class of drugs. This case report demonstrates an unusual cause of death in a young child with emphasis on potential limitation in hospital urine screening tests and the importance of complete forensic toxicological testing in all child deaths. 相似文献
102.
Robino C Varacalli S Gino S Chatzikyriakidou A Kouvatsi A Triantaphyllidis C Di Gaetano C Crobu F Matullo G Piazza A Torre C 《Forensic science international》2004,146(1):61-64
Eight Y chromosome short tandem repeat (STR) polymorphisms (DYS19, DYS385, DYS389I, DYS389II, DYS390, DYS391, DYS392, and DYS393) were analyzed in the sample of 117 unrelated Albanian males living in Kosovo. A general STR allelic frequency pattern in the Albanian population from Kosovo corresponds to other European populations. Fourty six haplotypes were observed in single copy. The most frequent haplotypes were (DYS19-DYS385-DYS389I-DYS389II-DYS390-DYS391-DYS392-DYS393) 14-11/11-13-29-24-11-13-13 (10.26%), 14-14/17-12-28-24-10-11-12 (9.40%), 13-16/18-13-30-24-10-11-13 (9.40%), and 14-17/17-13-31-24-10-11-13 (9.40%). 相似文献
103.
A case is presented of a 10 month old male who went into cardiac arrest at a local store. The infant subsequently expired and was autopsied at the Office of the Chief Medical Examiner, State of Maryland. The only remarkable finding was the detection of oxycodone in the postmortem specimens; the blood and liver oxycodone concentrations were 0.6 mg/L and 1.6 mg/kg, respectively. Oxycodone was identified and quantitated by gas chromatography-nitrogen-phosphorus detection and confirmed by full scan electron ionization gas chromatography-mass spectrometry. The medical examiner ruled that the cause of death was oxycodone intoxication, and the manner of death was homicide. The key toxicologic question in this case was whether or not it was reasonable for the infant to be exposed to oxycodone exclusively through breast milk or through an alternate source. It was concluded that, at best, there were serious concerns about the likelihood of drug exposure through consumption of breast milk. 相似文献
104.
In this study, an assessment phase is undertaken to determine intimate partner violence (IPV) prevalence. An anonymous survey is followed by a chart review documenting identification of IPV. Two methods are attempted to increase assessment/documentation of IPV: a physician educational intervention and a nursing routine inquiry intervention in one quadrant of the practice. The IPV physician educational intervention includes didactic sessions, an IPV counselor, and resource information. The routine inquiry intervention involves nurses screening female patients for IPV at check-in. IPV is found to be prevalent in a general medicine clinic. An enhanced educational intervention does not increase IPV documentation. A routine inquiry intervention significantly increases documentation of lifetime IPV but does not impact current IPV identification. 相似文献
105.
Elizabeth F. Mason 《环境索赔杂志》2009,21(3):200-210
The U.S. Environmental Protection Agency (USEPA) has recently taken steps toward directly regulating the potential environmental, health, and safety risks associated with the manufacture and use of nanomaterials, and indications are that it is considering additional regulatory action. More particularly, the agency appears ready to start relying more on the exercise of its existing statutory authorities—including the Toxic Substances Control Act and the Federal Insecticide, Fungicide and Rodenticide Act—than on voluntary industry efforts to address these potential risks. As a result, companies that work with nanomaterials should pay close attention to USEPA's activities in this arena. 相似文献
106.
JACOB I. STOWELL STEVEN F. MESSNER KELLY F. MCGEEVER LAWRENCE E. RAFFALOVICH 《犯罪学》2009,47(3):889-928
A good deal of research in recent years has revisited the relationship between immigration and violent crime. Various scholars have suggested that, contrary to the claims of the classic Chicago School, large immigrant populations might be associated with lower rather than higher rates of criminal violence. A limitation of the research in this area is that it has been based largely on cross‐sectional analyses for a restricted range of geographic areas. Using time‐series techniques and annual data for metropolitan areas over the 1994–2004 period, we assess the impact of changes in immigration on changes in violent crime rates. The findings of multivariate analyses indicate that violent crime rates tended to decrease as metropolitan areas experienced gains in their concentration of immigrants. This inverse relationship is especially robust for the offense of robbery. Overall, our results support the hypothesis that the broad reductions in violent crime during recent years are partially attributable to increases in immigration. 相似文献
107.
Tanuj Kanchan M.B.B.S. D.F.M. M.D. ; Anand Menon M.B.B.S. M.D. ; Ritesh G. Menezes M.B.B.S. M.D. P.G.D.M.L.S. D.N.B. 《Journal of forensic sciences》2009,54(4):938-942
Abstract: Suicide is an important public health hazard worldwide. A 4-year retrospective study from January 2000 to December 2003 was conducted to identify the favored methods in realized suicides among males and females in the west coastal region of India. During the study period, a total of 539 cases of suicidal deaths were autopsied. Males were predominantly affected (male: female—1.9:1). The age of the victims ranged from 13 to 90 years in males (mean = 40.1 years, median = 37.0 years) and 15 to 85 years in females (mean = 36.6 years, median = 32.0 years). Most favored method of suicide amongst males and females was hanging (36.9%, n = 199) followed by poisoning (34.7%, n = 187). Male dominance was apparent for each method of suicide except for self-immolation. Males were relatively more likely to use hanging and poisoning while females were more likely to prefer drowning and self-immolation as methods of suicide. Relatively younger females (mean = 33.0 years, median = 32.0 years) preferred hanging as a method of suicide when compared to males (mean = 42.4 years, median = 40.0 years). Among females, significantly younger females resorted to hanging when compared to older females who preferred drowning. On investigating the various theories proposed for choice of suicide methods in males and females in different regions we conclude that preference of method of suicide in men and women is complexly determined. In this region, availability, accessibility, popularity, and socioacceptability seem to be the major determinants in the choice of methods among males and females rather than violence associated and lethality of the method. Females were as likely to use lethal and violent methods as males in this region. 相似文献
108.
Zusammenfassung Die europarechtlichen Normen des sog. individuenbezogenen Artenschutzes (insbesondere Art. 5 lit.
a Vogelschutz- und Art. 12 Abs. 1 lit. a FFH-Richtlinie) sowie die innerstaatlichen Umsetzungsnormen
in § 42 Abs. 1 BNatSchG sind entgegen einer weit verbreiteten Tendenz als Verbote bestimmter gezielt
auf individuelle Exemplare der geschützten Arten gerichtete Zugriffshandlungen ernst zu nehmen. Der
Beitrag zeigt auf, wie auf dieser Basis der ausufernden Anwendung der genannten Normen vorgebaut werden
kann. Die abgestufte Handlungsverantwortlichkeit von Verkehrsteilnehmern, Beh?rden zur ordnungsbeh?rdlichen
Regelung des Verkehrsgeschehens sowie zur Zulassung von Verkehrsanlagen und -wegen wird verdeutlicht, zugleich
ein praktikabler Weg zum ma?vollen und differenzierten Umgang mit dem besonderen Artenschutzrecht aufgezeigt. 相似文献
109.
John F. Wozniak 《Crime, Law and Social Change》2009,51(1):189-203
During the past decade, there was a resurgent tendency in criminology to explain emerging patterns of crime within the United
States by referring solely to dysfunctional families or dysfunctional individuals. Other criminologists questioned these latter
approaches as detaching individuals and crime from the social institutions that envelope them. In light of this recent attempt
to link crime to social institutions, it seems fruitful to revisit the work of one of the most astute analysts of institutional
structure: C. Wright Mills. Hence, this article begins with an overview of Mills’ sociological perspective and then shows
how it provides useful insights into institutional sources of illegal behavior. The article also illustrates ways the Millsian
perspective can be directly applied to an analysis of corporate crime in relation to other forms of crime emanating from the
structure of contemporary U.S. society. After that, the article explores how the Millsian perspective can broaden understanding
of the growing decline of ethics within America’s leading industries, governmental agencies, and the justice system. The article
concludes by addressing policy implications, particularly in regard to the prospects of linking the Millsian perspective with
basic tenets of peacemaking criminology.
相似文献
John F. WozniakEmail: |
110.
In this paper, we evaluate the efficiency of prosecutor office efficiency in the United States. Using multiple inputs and
multiple outputs to characterize prosecutor office production, technical and scale efficiency are calculated for U.S. counties.
Given the complex nature of service provision and potential heterogeneity based on judicial district size, we restrict our
sample to those counties with populations between 100 and 500 thousand. Given the efficiency results, we also test whether
efficiency is statistically related to median income and the percentage of minority population. The results suggest that prosecutor
offices in more socio-economically disadvantages counties are more inefficient.
相似文献