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   10730篇
  免费   315篇
各国政治   337篇
工人农民   507篇
世界政治   652篇
外交国际关系   339篇
法律   6747篇
中国共产党   34篇
中国政治   132篇
政治理论   2156篇
综合类   141篇
  2021年   65篇
  2020年   151篇
  2019年   146篇
  2018年   218篇
  2017年   257篇
  2016年   291篇
  2015年   233篇
  2014年   230篇
  2013年   935篇
  2012年   248篇
  2011年   291篇
  2010年   224篇
  2009年   292篇
  2008年   349篇
  2007年   356篇
  2006年   339篇
  2005年   318篇
  2004年   312篇
  2003年   252篇
  2002年   245篇
  2001年   357篇
  2000年   340篇
  1999年   267篇
  1998年   168篇
  1997年   125篇
  1996年   150篇
  1995年   125篇
  1994年   141篇
  1993年   136篇
  1992年   204篇
  1991年   258篇
  1990年   221篇
  1989年   208篇
  1988年   228篇
  1987年   203篇
  1986年   225篇
  1985年   198篇
  1984年   168篇
  1983年   175篇
  1982年   109篇
  1981年   130篇
  1980年   105篇
  1979年   109篇
  1978年   92篇
  1977年   83篇
  1976年   67篇
  1975年   65篇
  1974年   70篇
  1973年   81篇
  1971年   54篇
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
991.
992.
In 1697, the Huguenot writer Pierre Bayle (1647–1706) published his Dictionnaire historique et critique ‐ a one‐man encyclopaedia. The article entitled Macon drew attention to the cruel atrocities perpetrated during the French Wars of Religion. This article explains the context of Bayle's critique, arguing that he uses the example to reflect on the Gallican regime's renewal of persecution against his community, and on the notorious revocation by Louis XIV, in 1685, of the Edict of Nantes. As a long‐term remedy for state violence against a law‐abiding minority, he recommends deliberative freedom within a framework of government impartiality, thereby anticipating a new secular order. A new translation of Bayle's article Macon can be found in the appendix.  相似文献   
993.
994.
995.
ABSTRACT

Like many Republican presidential candidates before him, Donald J. Trump campaigned on a pro-business, anti-regulation platform, and since his election in November 2016, he has directed his administration to move forward with deregulation in many arenas, including consumer financial protections, environmental controls, and workplace safety among others. Past efforts to roll back regulations governing certain industries, such as the savings and loan and the mortgage industries, have had harmful consequences for the general public or for specific interest groups. In this study, we review what the Trump administration has accomplished with regard to deregulation to date. Then, based on past deregulatory fiascos, we theorize the harmful collateral consequences that may result from this most recent swing of the regulatory-deregulatory pendulum.  相似文献   
996.
Fan AY  Zan YX  Liu HJ  Gao G  Zhang JL 《法医学杂志》2001,17(3):155-156
目的 探讨唾液酯酶( Set)多态性在法医学亲权鉴定和个体识别方面的应用价值。方法 应用聚丙烯酰胺凝胶盘状电泳及固蓝 RR染色方法,调查了 114名中国人 Set的表型分布及基因频率,用χ 2检验进行统计学分析。结果 中国人酯酶表型频率 Set F 22.81%, Set FS 50.88%, Set S 26.31% ;基因频率为 SetF 0.482 5, SetS 0.517 5;非父排除机率为 0.187 5,个体识别率为 0.619 9。结论 Set有较高的父权排除率和个体识别率,可作为法医学亲权鉴定和个体识别的重要标记系统之一。  相似文献   
997.
998.
A statistical investigation of the relationship between firing range and the amount and distribution of gunshot residue (GSR), used automated image analysis (IA) to quantify GSR deposit resulting from firings into pig skin, from distances ranging between contact and 45 cm. Overall, for a Ruger .22 semi-automatic rifle using CCI solid point, high velocity ammunition, the total area of GSR deposit on the skin sections decreased in a non-linear fashion with firing range. More specifically there were significant differences in the amount of GSR deposited from shots fired at contact compared with shots fired from distances between 2.5 and 45 cm; and between shots fired from a distance of 20 cm or less, with shots fired at a distance of 30 cm or more. In addition, GSR particles were heavily concentrated in the wound tract only for contact and close range shots at 2.5 cm, while the particle distribution was more uniform between the wound tract and the skin surfaces for shots fired from distances greater than 2.5 cm. Consequently, for future scientific investigations of gunshot fatalities, once standards have been established for the weapon and ammunition type in question, image analysis quantification of GSR deposited in and around the gunshot wound may be capable of providing a reliable, statistical basis for estimating firing range.  相似文献   
999.
Guan P  Ai XM  Yu RT  Gao LD 《法医学杂志》2001,17(2):79-81
目的探讨低氧、氧化应激中一氧化氮(NO)和氧自由基之间关系及其对培养神经元的损伤机理。方法对培养的新生大鼠神经细胞分别进行低氧、H2O2氧化应激处理和超氧化物歧化酶(SOD)抗氧化应激处理,用比色法等检测培养上清液中NO、丙二醛(MDA)、乳酸脱氢酶(LDH)和SOD含量变化指标。结果与对照组比较,低氧组和H2O2组的NO、LDH、MDA含量均显著增高,SOD含量显著降低,NO与SOD含量变化呈负相关关系。预先给予终浓度为200U/ml的SOD处理,可使神经细胞的NO、LDH和MDA释放量明显减少。各组间NO含量与LDH、MDA含量呈正相关关系。结论低氧、氧化应激促使神经元NO产生增多,NO有增加氧自由基对神经细胞的损伤作用。SOD具有清除氧自由基和减轻NO对神经元的损伤作用。  相似文献   
1000.
Disparities between federal and state cannabis regulation, coupled with protracted federal enforcement, have facilitated the proliferation of a multi–billion dollar cannabis industry that generally evades compliance with federal consumer protection laws. The Federal Food, Drug and Cosmetic Act (FDCA) established regulatory pathways for the lawful development of products such as food, drugs, and dietary supplements. The FDCA uses a science-based approach to protect consumers from harmful products, but early inconsistencies between state and federal cannabis regulation prevented and/or discouraged the cannabis industry from complying with FDCA requirements. Cannabis products are promoted as safe and attributed with providing effective therapeutic treatment for numerous medical conditions, yet the claims often lack the rigorous evidence-based support typically expected by regulators and the medical community. The Food and Drug Administration (FDA) has announced its expectation that cannabidiol (CBD) products comply with the FDCA and follow a science-based approach to product development. The FDA is addressing violations involving unsubstantiated CBD health claims and is working to clarify the future regulatory pathway for CBD products. Meanwhile, the state-approved cannabis market continues to operate, selling numerous products that have circumvented the FDCA consumer protections. This article examines the need for strengthening consumer protections in the cannabis market. We use evidence-based medicine as a model to address the importance of science-based product development and to contextualize a science-based comparison of regulatory pathways for cannabis drugs, food, and dietary supplements.  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