首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   124篇
  免费   7篇
各国政治   5篇
工人农民   3篇
世界政治   19篇
外交国际关系   5篇
法律   84篇
政治理论   14篇
综合类   1篇
  2024年   2篇
  2023年   2篇
  2022年   6篇
  2021年   2篇
  2020年   5篇
  2019年   5篇
  2018年   7篇
  2017年   14篇
  2016年   4篇
  2015年   4篇
  2014年   3篇
  2013年   13篇
  2012年   8篇
  2011年   4篇
  2010年   5篇
  2009年   2篇
  2008年   5篇
  2007年   5篇
  2006年   3篇
  2005年   5篇
  2004年   4篇
  2003年   5篇
  2002年   2篇
  1999年   2篇
  1998年   1篇
  1997年   1篇
  1994年   2篇
  1993年   3篇
  1991年   2篇
  1990年   2篇
  1988年   1篇
  1975年   1篇
  1973年   1篇
排序方式: 共有131条查询结果,搜索用时 15 毫秒
81.
The report presents a fatal poisoning of a neonate occurring in the final stage of gestational life and evoked by his mother, who, while 9 months pregnant, took a toxic dose of clozapine aiming at committing suicide. She was also severely poisoned, but ultimately was saved. The woman had been taking the medication due to schizophrenia and depression prior to conception, and the discontinuation of the drug in the course of pregnancy increased the risk of the woman attempting suicide. In the course of comprehensive toxicological analysis based on the developed analytical procedure with the use of LC-APCI-MS, clozapine and its two metabolites, norclozapine and clozapine-N-oxide, were determined in postmortem blood, liver and kidney in concentrations explaining the death of the neonate. The interpretation of the above-described case is complex and--apart from toxicological aspects--also involves issues associated with psychiatry, pharmacotherapy in pregnancy and medicolegal problems.  相似文献   
82.
In this paper the by-products arising during the synthesis of 4-methylthioamphetamine (4-MTA) by LiAlH(4) reduction of 1-(4-methylthiophenyl)-2-nitropropene (nitropropene route) and reductive amination of 4-methylthiophenyl-2-propanone in the presence of NaCNBH(4) are investigated. The identification of 4-methylthio derivatives of N-(β-phenylisopropyl)benzaldimine, 4-methylthio derivative of N-(β-phenylisopropyl)benzyl methyl ketimine, 1-(4-methylthiophenyl)-N-(4-methylthiobenzyl)-2-propanamine, (RS) and (SS/RR)-N,N-di-[β-(4-methylthiophenyl)isopropyl]amine, 4-methylthiobenzyl ether and methylthiobenzoic acid methyl ester as most prominent impurities in crude 4-MTA synthesised by reductive amination of 4-methylthiophenyl-2-propanone, is reported. Methylthio derivatives of 2-methyl-3-phenylaziridine, 2-benzylaziridine, and 4-methylthio derivative of BMK oxime as route-specific markers of nitropropene route leading to 4-MTA, were also characterized. The identity of these compounds was confirmed by their independent synthesis.  相似文献   
83.
The online sale of psychoactive substances, including hallucinogens, is becoming a serious problem in many countries. This paper presents and discusses the mass spectrometric, infrared spectroscopic and nuclear magnetic resonance spectroscopic data of 2,5-dimethoxy-4-nitro-β-phenethylamine (2C-N), which was identified in a powder sample seized by the authorities in 2011 in Poland. The molecular mass of 2C-N (226.0954amu) was confirmed in the LC/ESI-QTOFMS experiment. The molecular ion was also observed in the GC-EI/MS spectrum. A characteristic set of ions for the parent substance was found using both chromatographic methods, and when derivatization with trifuluoroacetic anhydride (TFAA) was applied. Two broad dominant bands at 1520cm(-1) and 1342/1322cm(-1), observed in the FTIR spectrum of 2C-N, originated from the nitro group. NMR spectroscopy helped unequivocal elucidation of the structure. The applied identification procedure proved to be a powerful tool to determine the structure of a new designer drug.  相似文献   
84.
The article reflects on the possibility of conceptualising the complex problem of the normativity of international legal rules, including in particular the phenomenon of “relative normativity.” The author utilises the critical potential of Ronald Dworkin's proposal for a new philosophy of international law to reflect on the classical accounts explaining normativity of international law. By building on Dworkin's argument, the author argues for a constitutional account of international law. The far‐reaching constitutional proposals may provide a more complex and coherent set of possible rationalisations of international legal rules. International law is in great need of a comprehensive theory that could better explain its normative character as well as its sources, and it is argued that international constitutionalism has the potential to serve this purpose.  相似文献   
85.
Abstract

This article investigates EU–China dialogue on regional policy, a puzzling exercise in policy transfer because such policy is by its nature inward-oriented and the intricacies of regional development imply uncertainty about its effects in different contexts. The article sheds light on the reasons of both sides for engaging in this unlikely policy learning effort and identifies its actors and mechanisms. It also critically assesses this process, stressing its one-way nature and the active role of the EU as a ‘policy-sender’, in contrast to most policy transfer literature citing demands by the policy-recipient as the predominant reason to engage in such cooperation.  相似文献   
86.
This article surveys the official narrative on representation of Estonian identity and Estonianness through the tourism strategy implemented by Estonia from 2007 to 2015. Gathering material from brochures and documents targeting foreigners produced by the Estonian Institute and “Enterprise Estonia” (EAS) and analyzing the logic behind the interior design of Tallinn Airport, we engage with current debates on identity construction in post-Soviet spaces. In particular, we suggest that along with an established body of literature looking at the role of state actors in the construction of identity, studies should consider the role of nontraditional or non-state actors in identifying and promoting identity markers.  相似文献   
87.
Pursuant to the Polish Weapons and Ammunitions Law, muzzle‐loading black powder weapons, manufactured before 1885, or their replicas, as well as suitable projectiles, can be possessed legally without registration and special licenses. The aim of the study was to assess the penetration depth of projectiles fired from a black powder weapon, replica of Colt Navy of 1851, in 20% gelatin blocks and to compare the obtained results with the actual injuries found on autopsy of a 78‐year‐old man who had committed suicide. In the experiments, we used the black powder weapon and ammunitions, as well as gelatin blocks serving as a soft tissue model. We ascertained that solid spherical projectiles fired from black powder weapons cause extensive injuries, especially in the initial segment of the wound canal. Additionally, based on the presence and location of the wad in the wound canal, the distance from which the shot was fired can be determined.  相似文献   
88.
Research shows that some agricultural cooperatives implement development projects in their local communities. What remains to be explained is why certain cooperatives pursue local development while others do not. Through a comparison of coffee cooperatives in two regions of Peru, this study examines the implications of a regional cooperative for local development. The creation of a regional cooperative leads to a concentration of resources and a decrease in the need and ability of local cooperatives to pursue independent development projects. At the same time, it allows for more equal access to those resources and to the benefits of cooperative-led development projects.  相似文献   
89.
Crime, Law and Social Change - Nobody should profit from crime; this fundamental moral principle is uncontroversial. At the level of public declaration, few people are likely to disagree with this...  相似文献   
90.
Homicide cases suffer from substantial levels of missing data, a problem largely ignored by criminological researchers. The present research seeks to address this problem by imputing values for unknown victim/offender relationships using the EM algorithm. The analysis is carried out first using homicide data from the Los Angeles Police Department (1994-1998), and then compared with imputations using homicide data for Chicago (1991-1995), using a variety of predictor variables to assess the extent to which they influence the assignment of cases to the various relationship categories. The findings indicate that, contrary to popular belief, many of the unknown cases likely involve intimate partners, other family, and friends/acquaintances. However, they disproportionately involve strangers. Yet even after imputations, stranger homicides do not increase more than approximately 5%. The paper addresses the issue of whether data on victim/offender relationships can be considered missing at random (MAR), and the im-plications of the current findings for both existing and future research on homicide.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号