全文获取类型
收费全文 | 286篇 |
免费 | 15篇 |
专业分类
各国政治 | 19篇 |
工人农民 | 12篇 |
世界政治 | 35篇 |
外交国际关系 | 27篇 |
法律 | 159篇 |
中国政治 | 4篇 |
政治理论 | 43篇 |
综合类 | 2篇 |
出版年
2023年 | 3篇 |
2022年 | 5篇 |
2021年 | 6篇 |
2020年 | 7篇 |
2019年 | 8篇 |
2018年 | 6篇 |
2017年 | 12篇 |
2016年 | 10篇 |
2015年 | 12篇 |
2014年 | 10篇 |
2013年 | 49篇 |
2012年 | 13篇 |
2011年 | 15篇 |
2010年 | 3篇 |
2009年 | 8篇 |
2008年 | 16篇 |
2007年 | 21篇 |
2006年 | 17篇 |
2005年 | 15篇 |
2004年 | 15篇 |
2003年 | 12篇 |
2002年 | 3篇 |
2001年 | 3篇 |
2000年 | 6篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 5篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1992年 | 1篇 |
1990年 | 2篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1977年 | 2篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有301条查询结果,搜索用时 15 毫秒
101.
102.
Causin V Casamassima R Marega C Maida P Schiavone S Marigo A Villari A 《Journal of forensic sciences》2008,53(6):1468-1473
The knowledge of the discriminating power of analytical techniques used for the differentiation of writing inks can be useful when interpreting results. Ultraviolet-visible (UV-VIS) spectrophotometry, thin layer chromatography (TLC), and diffuse reflectance Fourier transform infrared spectroscopy (FT-IR) were used to examine a population of 21 black and 12 blue ballpoint writing inks. Based on corroborative results of these methods, the discrimination power for UV-VIS, TLC, and FT-IR was determined to be 100% and 98% for the black and blue inks, respectively. Generally, TLC and UV-VIS can be used to differentiate the colorant components (i.e., dyes and some pigments) found in inks. As FT-IR can be utilized to identify some of the noncolorant components, it was determined to be an excellent complementary technique that can be implemented into an analytical scheme for ink analysis. 相似文献
103.
Purpose
To evaluate the role of alcohol and drug consumption between sexual offenders against boys and girls.Method
It was an observational, retrospective and cross-sectional study carried out by the Ambulatory for the treatment of sexual disorders of ABC Medical College, Santo André, São Paulo, Brazil (ABSex). The sample comprised 104 convicts, over 18 years old, sentenced only for sexual crimes against children (below 11 years old). Alcohol and drug consumption, sexual abuse history, sexual impulsivity, and risk of recidivism were evaluated.Results
The sexual offenders against boys showed higher alcohol consumption problems than sexual offenders against girls (χ2 = 19.76, 1 d.f., p < 0.01). The severity of alcohol consumption was also significantly higher in the sexual offenders against non-related boys than in the sexual offenders against non-related girls (p = 0.037, ANOVA). After adjustment for other variables, such as monthly income before the penalty and alcohol consumption at the moment of the crime, the alcohol consumption severity in sexual offenders against boys was significantly higher than in sexual offenders against girls (OR = 1.05, CI 1.01–1.08, p < 0.01).Conclusions
Alcohol use or abuse is associated with the perpetration of sexual aggression. The role of alcohol consumption seems to be greater in sexual offenders against boys than in girls and this can contribute to criminal recidivism. 相似文献104.
Provisions for a parliamentary investiture vote have become increasingly common in parliamentary democracies. This article shows that investiture provisions were largely introduced when new constitutions were written or old ones fundamentally redesigned. It also shows that the constitutions that endowed executives with strong legislative agenda powers also endowed parliaments with strong mechanisms to select the executive. It is argued that constitution makers’ decisions can be seen in principal–agent terms: strong investiture rules constitute an ex ante mechanism of parliamentary control – that is, a mechanism to minimise adverse selection and reduce the risk of agency loss by parliament. The findings have two broad implications: from a constitutional point of view, parliamentary systems do not rely exclusively on ex post control mechanisms such as the no confidence vote to minimise agency loss; parliamentarism, at least today and as much as presidentialism, is the product of conscious constitutional design and not evolutionary adaptation. 相似文献
105.
106.
107.
108.
109.
The Application of Voltammetric Analysis of Δ9‐THC for the Reduction of False Positive Results in the Analysis of Suspected Marijuana Plant Matter 下载免费PDF全文
Marco A. Balbino Ph.D. Laura S. de Oliveira M.S. Izabel C. Eleotério Ph.D. Erica N. Oiye M.S. Maria F.M. Ribeiro M.S. Bruce R. McCord Ph.D. Antonio J. Ipolito M.S. Marcelo F. de Oliveira Ph.D. 《Journal of forensic sciences》2016,61(4):1067-1073
The development of methodologies using inexpensive, fast, and reliable instrumention is desirable in illicit drug analysis. The purpose of this study was based on cyclic voltammetry technique to differentiate the electrochemical behavior of ?9‐THC, the psychoactive substance in marijuana, and five different extract plants to yield false positive results after analysis protocol for cannabinoids using thin‐layer chromatography and Fast Blue B salt. After applying a deposition potential of ?0.5 V in a glassy carbon working electrode, the results indicated an anodic peak current at 0.0 V versus Ag/AgCl after addition of ?9‐THC solution in the electrochemical cell, and limits of detection and quantification were 1.0 ng mL?1 and 3.5 ng mL?1, respectively. Other interfering plants showed distinct amperometric responses. This methodology was useful to detect ?9‐THC even in the presence of the Fast Blue B salt, which avoided false positive results for all the studied extract plants. 相似文献
110.
María Patricia Navas Lorena Maneiro Olalla Cutrín José Antonio Gómez-Fraguela Jorge Sobral 《Legal and Criminological Psychology》2021,26(2):196-214
Previous research has revealed a strong association between moral disengagement (MD) and criminal behaviour. However, few studies have attempted to examine the contribution of dark personalities to MD. This study aims to first analyse the differences between forensic and community samples in the use of MD strategies and then replicate the factorial structure of the Dark Triad Dirty Dozen scale in an incarcerated sample as a pre-condition to examine the relationship between dark triad (DT) traits (i.e. Machiavellianism, psychopathy and narcissism) and MD. The sample comprised 160 incarcerated and 160 community adults. Comparisons between these two groups demonstrate that the incarcerated sample scored higher in MD and DT than the community sample. Furthermore, different MD strategies were related to each of the DT traits in the forensic and community samples. The results of exploratory factor analysis for the incarcerated sample indicate adequate fit indices for a bifactorial model of the DT (a latent factor of the shared variance of these constructs named the global DT and three specific latent factors for each component of the DT). The SEM analysis for this bifactorial model and MD disclosed direct and significant relationships between the global DT and MD in the incarcerated adults, while the Machiavellianism factor was directly and significantly related to MD in the community adults. These results highlight the relevance of cognitive (i.e. MD) strategies in forensic contexts, especially in incarcerated adults who present high levels of this DT profile. 相似文献