全文获取类型
收费全文 | 171篇 |
免费 | 12篇 |
专业分类
各国政治 | 17篇 |
工人农民 | 5篇 |
世界政治 | 16篇 |
外交国际关系 | 11篇 |
法律 | 105篇 |
中国共产党 | 1篇 |
政治理论 | 27篇 |
综合类 | 1篇 |
出版年
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 6篇 |
2019年 | 9篇 |
2018年 | 6篇 |
2017年 | 10篇 |
2016年 | 9篇 |
2015年 | 6篇 |
2014年 | 9篇 |
2013年 | 30篇 |
2012年 | 8篇 |
2011年 | 4篇 |
2010年 | 4篇 |
2009年 | 9篇 |
2008年 | 2篇 |
2007年 | 4篇 |
2006年 | 9篇 |
2005年 | 6篇 |
2004年 | 6篇 |
2003年 | 7篇 |
2002年 | 8篇 |
2001年 | 1篇 |
2000年 | 2篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1975年 | 2篇 |
1973年 | 1篇 |
1966年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有183条查询结果,搜索用时 31 毫秒
91.
Fernando Gurrea Casamayor 《European Journal for Education Law and Policy》1998,2(2):171-183
This article examines the regulation of remedial education in Spain that has emerged from a sweeping reform of the educational
system, originating from and inspired by constitutional principles and the regulation of the right to an education. The components
of this theme display certain similarities with (a) specific programmes in U.S. educational institutions; (b) the English
system of priority areas for the improvement of the educational infrastructure and materials, and teacher incentives and (c)
the planning, opening, and specific nature of Educational Priority Areas in France.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
92.
Determination of Herbicides Paraquat,Glyphosate, and Aminomethylphosphonic Acid in Marijuana Samples by Capillary Electrophoresis
下载免费PDF全文
![点击此处可从《Journal of forensic sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Rafael Lanaro M.Sc. José L. Costa Ph.D. Silvia O. S. Cazenave Ph.D. Luiz A. Zanolli-Filho M.Sc. Marina F. M. Tavares Ph.D. Alice A. M. Chasin Ph.D. 《Journal of forensic sciences》2015,60(Z1):S241-S247
In this work, two methods were developed to determine herbicides paraquat, glyphosate, and aminomethylphosphonic acid (AMPA) in marijuana samples by capillary electrophoresis. For paraquat analysis, sample was extracted with aqueous acetic acid solution and analyzed by capillary zone electrophoresis with direct UV detection. The running electrolyte was 50 mmol/L phosphate buffer (pH 2.50). For glyphosate and AMPA, indirect UV/VIS detection was used, as these substances do not present chromophoric groups. Samples were extracted with 5 mmol/L hydrochloric acid. The running electrolyte was 10 mmol/L gallic acid, 6 mmol/L TRIS, and 0.1 mmol/L CTAB (pH = 4.7). The methods presented good linearity, precision, accuracy, and recovery. Paraquat was detected in 12 samples (n = 130), ranging from 0.01 to 25.1 mg/g. Three samples were positive for glyphosate (0.15–0.75 mg/g), and one sample presented AMPA as well. Experimental studies are suggested to evaluate the risks of these concentrations to marijuana user. 相似文献
93.
94.
Fernando Toboso 《European Journal of Law and Economics》1995,2(1):63-84
This paper deals with the phenomenon of institutional change and has been conceived as an attempt to answer the following question: Can we retain theimage of institutional change contained in a theory when we replace a methodological foundation on which the theory was built by a different and alternative one? For an answer to be developed, special attention is paid to the contributions made by institutional economists (IE) and those made by transaction cost—new institutional economists (NIE). The question clearly shows that it is a paper on applied methodology rather than a survey on institutional change contributions. Because of that, its main purpose is not to increase our knowledge about the characteristics of real changes in legal rules and social norms, their causes, their processes, or their effects, though several examples are given of those institutionalist and new institutionalist contributions that analyze those changes. Our purpose is to investigate the way in which these two groups of economists approach the object of analysis already mentioned. Our conclusion will be that institutionalist and new institutionalist contributions are built on two different and mutually exclusive approaches because their respective methods of analysis (holism versus methodological individualism) are different and, above all, because they build their respective analyses on some concepts that are mutually exclusive (concepts showing power or nonvoluntary influences versus concepts showing voluntary transactions). Their analyses contain different and mutually exclusiveimages of the changes taking place in legal rules-formal institutions and social norms-informal institutions. Some comments about the limitations of the holist method of analysis are made in the paper. 相似文献
95.
The contribution of lobby regulation initiatives in addressing political corruption in Latin America
Luiz Alberto dos Santos Paulo Mauricio Teixeira da Costa 《Journal of Public Affairs (14723891)》2014,14(3-4):379-391
For most of its history, Latin America has lived under authoritarian and elite rule where public decisions were often crafted in the shadows by cabinets and parliaments to the benefit of a small minority. Recently, the development of participatory political systems has brought some transparency to the policy-making process. Such scrutiny reveals evidence of the capture of aspects of policy-making by private interests that use obscure strategies to achieve their political goals. As a consequence, a widespread movement for regulating the role and tactics of interest groups emerged, which is seen as a necessary step to address the root causes of political corruption. This article provides an overview of efforts to regulate lobbying in Latin America. It explains attempts at regulation in four countries (Argentina, Brazil, Chile, and Peru), evaluates the level of success of these efforts, and assesses prospects for the future regarding reducing corruption through the instrument of lobby regulations. The authors argue that such regulations alone cannot eliminate political corruption. However, lobby regulations can contribute to increased transparency and aid in developing an anti-corruption culture. It will be shown that lobby laws in Latin America exhibit many of the problems long identified with similar regulations across western democracies. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
96.
Núñez-Regueiro Fernando Núñez-Regueiro Santiago 《Journal of youth and adolescence》2021,50(12):2533-2556
Journal of Youth and Adolescence - Stressors play a defining role in youth development and, in particular, in adolescent psychological and behavioral adaptation. However, the nature of stressors... 相似文献
97.
Deaths due to the ring-derivative amphetamines are not common and are usually accidental involving dehydration and hyperthermia. Suicides from 3,4-methylenedioxymethamphetamine (MDMA) and related ring-derivative amphetamines overdose are rare. A 15-year-old female who had a history of depression and previous suicide attempts was found dead with a suicide note. Toxicology demonstrated lethal serum concentrations of MDMA (9.3 mg/L), with 34 mg/kg of MDMA in the liver, 2.4 mg/L in the urine, and 530 mg/kg in the stomach. The cause of death was MDMA toxicity, the manner suicide. While MDMA may be detected in victims in other drug-related or traumatic deaths, it is only rarely used in isolation in suicide, with a predominance in the 21- to 25-year-old range. Despite the rarity of such events, the possibility of a nonaccidental manner of death should be considered when high levels of MDMA and associated amphetamines are found at autopsy. 相似文献
98.
Bloodstains on Leather: Examination of False Negatives in Presumptive Test and Human Hemoglobin Test
下载免费PDF全文
![点击此处可从《Journal of forensic sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Ana Castelló Ph.D. Francesc Francès M.D. Ph.D. Fernando Verdú M.D. Ph.D. 《Journal of forensic sciences》2017,62(5):1308-1313
Presumptive tests for blood are very simple and sensitive tests used in the search for evidence. They also provide initial information on the nature of stains. A second test can confirm their nature. However, these tests can present false–negative results for different reasons. Some of those reasons have been studied, while others, those caused by the substrate material that contains the stain, are less well known. This work studies the effect of one component of a leather substrate—quebracho extract—on presumptive and human hemoglobin blood tests. Assays were performed using samples of blood dilutions contaminated with quebracho extract and others formed on a substrate containing the contaminant. Results show an undoubted interference that causes false negatives and even visible to the naked eye stains and also indicate that some tests (phenolphthalein) are more affected than others. Examiners should be taken into account when working on this kind of substrates. 相似文献
99.
Luiz Antonio Lira M.Sc. Marcos Patrício Macedo M.Sc. José Roberto Pujol‐Luz Ph.D. Simão Dias Vasconcelos Ph.D 《Journal of forensic sciences》2019,64(3):799-804
Oxelytrum discicolle is a carrion beetle commonly found in the Neotropical region, mainly associated with cadavers and carcasses. Information on behavior related to the likelihood of cadaver colonization is scarce. We performed two field experiments in peri‐urban forest in Brazil in order to strengthen our knowledge on O. discicolle behavior. In the first experiment, we assessed the preference for piglet carcasses at different stages of decomposition offered simultaneously in two seasons, dry and rainy, while in the second experiment we investigated the diel activity of adults. A total of 493 adults were collected in the experiments. A significantly higher abundance was detected in the rainy season. There was a marked preference for carcasses at advanced stages. Adults exhibited a typical nocturnal behavior, the number trapped at night was 17 times greater than those collected during the day. Oxelytrum discicolle is nocturnal species that prefers carcasses in advanced stage of decomposition. 相似文献
100.
Alejandro Giménez-Santana José E. Medina-Sarmiento Fernando Miró-Llinares 《European Journal on Criminal Policy and Research》2018,24(4):451-467
Environmental Criminology has developed a robust framework that provides the scientific support and necessary foundation for crime analysis through crime mapping. This theoretical approach focuses on the situational and temporal characteristics of criminal opportunity rather than on the offender’s behavior for crime prevention. In the scope of road safety and traffic crashes, few studies have adopted this approach. This study used risk terrain modeling (RTM), developed by the Rutgers Center on Public Security, to determine the relative importance of varying environmental risk factors on alcohol-related crashes and traffic accidents. The independent variables consisted of a set of potential environmental risk factors, while the dependent variable comprised all DWI crashes and traffic accidents in the province of Cádiz in 2012. According to the results of the current study, restaurant locations are spatially associated with the occurrence of drunk driving crashes, while proximity restaurants and recreational lodging centers correlate with the sites of traffic accidents. 相似文献