全文获取类型
收费全文 | 5146篇 |
免费 | 71篇 |
专业分类
各国政治 | 178篇 |
工人农民 | 44篇 |
世界政治 | 832篇 |
外交国际关系 | 487篇 |
法律 | 2947篇 |
中国共产党 | 77篇 |
中国政治 | 241篇 |
政治理论 | 326篇 |
综合类 | 85篇 |
出版年
2021年 | 26篇 |
2018年 | 23篇 |
2016年 | 16篇 |
2015年 | 20篇 |
2014年 | 107篇 |
2013年 | 32篇 |
2012年 | 318篇 |
2011年 | 307篇 |
2010年 | 123篇 |
2009年 | 111篇 |
2008年 | 300篇 |
2007年 | 348篇 |
2006年 | 395篇 |
2005年 | 374篇 |
2004年 | 321篇 |
2003年 | 296篇 |
2002年 | 281篇 |
2001年 | 243篇 |
2000年 | 234篇 |
1999年 | 126篇 |
1998年 | 49篇 |
1997年 | 34篇 |
1996年 | 38篇 |
1995年 | 41篇 |
1994年 | 60篇 |
1993年 | 37篇 |
1992年 | 34篇 |
1991年 | 40篇 |
1990年 | 26篇 |
1989年 | 23篇 |
1988年 | 114篇 |
1987年 | 32篇 |
1986年 | 31篇 |
1985年 | 32篇 |
1984年 | 36篇 |
1983年 | 41篇 |
1982年 | 28篇 |
1981年 | 44篇 |
1980年 | 50篇 |
1979年 | 44篇 |
1978年 | 20篇 |
1977年 | 46篇 |
1976年 | 33篇 |
1973年 | 14篇 |
1964年 | 27篇 |
1963年 | 25篇 |
1962年 | 42篇 |
1961年 | 19篇 |
1960年 | 22篇 |
1959年 | 30篇 |
排序方式: 共有5217条查询结果,搜索用时 15 毫秒
991.
贝卡里亚否认将财产视为自然或绝对的权利,但未正式提倡废除一切私有权。他指出个体欲望能促使每个人积极奋斗,并使财富在此过程中得以扩张,因此认为资源不平等在某种程度上是能够接受的。这种观点与《犯罪与刑罚》的主旨存在着潜在冲突:更为平等的财富和权力对他提倡的刑事司法制度形成至关重要。他的观点受到当时比他保守和激进的人的质疑和批评。保守主义者费尔迪南多·法基内认为等级社会中土地所有者的家族式统治应当得到刑法的维护和支撑。早期社会主义者艾伯·马布利则对贝卡里亚倡导的改革在充满竞争和不平等的资本主义社会的可行性表示怀疑。 相似文献
992.
首先,"社会管理"在各个国家有不同的表述,比如说在欧盟,很少用"管理",而一般用其他的词,比如"良政"。但是无论是用哪个词语,意思都是差不多的,原则都是一致的,主要是关于"法治",关于"透明"。人们应当知道政府在做什么事情, 相似文献
993.
C.支付平衡和外汇汇率上次大战前的泰國支付平衡,我們沒有統計数字。我們唯一所有的是進出口貿易的記錄。在相互战爭时期,泰國的支付平衡中出口盈余統治着現金存款。海外华僑汇款是无形貿易帐中最主要的對外項目。其它還有航運,保险和投资收入的净付款。在現金帐中有形貿易項目超過了无形項目使貿易平衡成為支付平衡中最重要的指標。在那个时期,泰國的外國投资不多。然而,有許多黄金和白銀的流动調節了支付平衡。 相似文献
994.
Maviglia R Dobosz M Boschi I Caglià A Hall D Capelli C d'Aloja E Pescarmona M Moscetti A Pascali VL Destro-Bisol G 《Forensic science international》2001,115(1-2):99-101
A collection of 6830 typing results produced by the Immunohematology Laboratory at the UCSC, pertaining to 11 STRs (FES/FPS, vWA31, HUMTH01, F13A1, MBP, D21S11, D7S460, D18S51, CD4, TPOX, CSF1PO) and 3 AmpFLPs (D1S80, APO-B, COL2A1), is publicly available as an electronic archive at a website. 相似文献
995.
996.
Gusmão L Prata MJ Miranda C de Jesus Trovoada M Amorim A 《Forensic science international》2001,116(1):53-54
Allele frequencies for eight STRs (CD4, FES/FPS, MBPB, TH01, TP53, TPO, F13A1, VWA) were estimated from samples (sized between 279 and 328) of unrelated individuals born in S. Tomé e Príncipe (Gulf of Guinea, West Africa). 相似文献
997.
Vitreous humor chemistry is used for postmortem analysis since serum values of many components are thought to be reflected in vitreous humor and to be stable for a prolonged postmortem interval (pmi). A similar isolated compartment to vitreous humor is synovial fluid which up to now was hardly used for postmortem chemistry.The aim of the present examination was to compare the values of various analytes in both fluid compartments to get first hints for the reliability of the examination of synovial fluid. Therefore, in 74 cases of sudden death both fluids were taken and analysed for natrium, potassium, calcium, chloride, urea, creatinine, and glucose. The results show that the examination of synovial fluid as compared to vitreous humor is a reliable method to get hints on the premortal metabolic status since most analytes are stable postmortem. The range of all values is comparable in both fluids. The time course of glucose concentrations and, much more important, potassium concentrations is nearly similar. If no vitreous humor is available synovial fluid may be used with all precautions in diagnosis known from vitreous humor. 相似文献
998.
Allele frequencies for twelve STRs included in the AmpFlSTR Profiler Plus kit (D3S1358, VWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317 and D7S820) and GenePrint CTTv kit (VWA, TH01, TPO and CSF1PO) were estimated from a sample of 110 unrelated individuals from Mozambique. 相似文献
999.
Because gamma-hydroxybutyrate (GHB) is an endogenous substance present in the body and is rapidly eliminated after ingestion, toxicologists investigating drug-facilitated sexual assault cases are often asked to differentiate between endogenous and exogenous levels of GHB in urine samples.This study was designed to determine the effects of storage temperature on endogenous GHB levels in urine. Specifically, it was designed to ascertain whether endogenous levels can be elevated to a range considered indicative of GHB ingestion.Urine specimens from two subjects that had not been administered exogenous GHB were collected during a 24h period and individually pooled. The pooled specimens were separated into standard sample cups and divided into three storage groups: room temperature ( approximately 25 degrees C), refrigerated (5 degrees C), and frozen (-10 degrees C). Additionally, some specimens were put through numerous freeze/thaw cycles to mimic situations that may occur if multiple laboratories analyze the same specimen. Periodic analysis of the samples revealed increases in the levels of endogenous GHB over a 6-month period. The greatest increase (up to 404%) was observed in the samples maintained at room temperature. The refrigerated specimens showed increases of 140-208%, while the frozen specimens showed smaller changes (88-116%). The specimens subjected to multiple freeze/thaw cycles mirrored specimens that had been thawed only once. None of the stored urine specimens demonstrated increases in GHB concentrations that would be consistent with exogenous GHB ingestion. 相似文献
1000.
Application of solvent microextraction to the analysis of amphetamines and phencyclidine in urine 总被引:4,自引:0,他引:4
A fast and simple method to detect some commonly abused illicit drugs, amphetamine, methamphetamine, 3,4-methylendioxy-amphetamine (MDA), 3,4-methylendioxy-methamphetamine (MDMA), 3,4-methylendioxy-N-ethylamphetamine (MDEA) and phencyclidine (PCP) in urine using solvent microextraction (SME) combined with gas chromatography (GC) analysis has been developed. The extraction is conducted by suspending a 2 microl drop of chloroform in a 2 ml urine sample. Following 8 min of extraction, the organic solvent is withdrawn into the syringe and injected into a GC with a pulsed discharge helium ionization detector (PDHID). The effects of different extraction solvents and times, pH and sample preparation were studied. The optimized method was capable of detecting drugs in urine at concentrations below Substance Abuse and Mental Health Services Administration (SAMHSA) established cut-off values for preliminary testing. Good linearity and reproducibility of extraction were obtained. The limits of detection were 0.5 microg/ml for amphetamine, 0.1 microg/ml for methamphetamine and MDA, 0.05 microg/ml for MDMA, 0.025 microg/ml for MDEA and 0.015 microg/ml for PCP. Relative standard deviation (R.S.D.) values ranged between 5 and 20% for the studied drugs. 相似文献