全文获取类型
收费全文 | 218篇 |
免费 | 15篇 |
专业分类
各国政治 | 26篇 |
工人农民 | 15篇 |
世界政治 | 27篇 |
外交国际关系 | 11篇 |
法律 | 120篇 |
中国政治 | 1篇 |
政治理论 | 33篇 |
出版年
2023年 | 6篇 |
2022年 | 6篇 |
2021年 | 7篇 |
2020年 | 12篇 |
2019年 | 16篇 |
2018年 | 13篇 |
2017年 | 16篇 |
2016年 | 11篇 |
2015年 | 4篇 |
2014年 | 12篇 |
2013年 | 30篇 |
2012年 | 6篇 |
2011年 | 5篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 5篇 |
2007年 | 13篇 |
2006年 | 10篇 |
2005年 | 17篇 |
2004年 | 7篇 |
2003年 | 8篇 |
2002年 | 11篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有233条查询结果,搜索用时 10 毫秒
21.
22.
Genetic variability of 16 Y-chromosome STRs in a sample from Equatorial Guinea (Central Africa) 总被引:3,自引:0,他引:3
Arroyo-Pardo E Gusmão L López-Parra AM Baeza C Mesa MS Amorim A 《Forensic science international》2005,149(1):109-113
Nine Y-STR loci from the "minimal haplotype" included in Y-STR Haplotype Reference Databases (YHRD) together with eight additional Y-STRs (DYS437, DYS438, DYS439, DYS460, DYS461, GATA C4, GATA H4 and GATA A10) were analyzed in a sample of 101 males from Equatorial Guinea living in Madrid. Haplotype and allelic frequencies were calculated and genetic diversities were estimated for each genetic system as well as for the whole haplotype. An unexpected high frequency (6%) of intermediate alleles (13.2 and 14.2) was found in DYS385. For DYS19, two alleles were found in one sample. Another sample failed to amplify with DYS393 primers using either PowerPlex Y System (Promega Corporation) or the Y-PLEXtrade mark 12 (Reliagene, New Orleans, LA) commercial kits. Comparison between Equatorial Guinea and another African population (Mozambique; South East Coast) revealed a significant pairwise Phi(st) value between them (Phi(st)=0.03309; P=0.00000). 相似文献
23.
Cherni L Pereira L Goios A Loueslati BY Khodjet el Khil H Gomes I Gusmão L Alves C Slama A Amorim A Elgaaied AB 《Forensic science international》2005,152(1):95-99
The 11 Y-chromosomal short tandem repeats (STRs) included in the Promega Corporation PowerPlex Y System (DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438 and DYS439) were typed in three ethnic groups ("Andalusians", Berber and Arab) and one cosmopolitan population (Tunis) from Tunisia, summing up 247 individuals, and 139 different haplotypes. Focusing the analysis on the seven Y-STRs of the YHRD Minimal Haplotype Core (DYS385 excepted), "Andalusians" showed no differences from the Cosmopolitan and the Arab samples previously published (our Arab sample presented an extremely low haplotype diversity), but were different from the Berbers. The Berbers from Tunisia were not different from those from Morocco. 相似文献
24.
Salas A Prieto L Montesino M Albarrán C Arroyo E Paredes-Herrera MR Di Lonardo AM Doutremepuich C Fernández-Fernández I de la Vega AG Alves C López CM López-Soto M Lorente JA Picornell A Espinheira RM Hernández A Palacio AM Espinoza M Yunis JJ Pérez-Lezaun A Pestano JJ Carril JC Corach D Vide MC Alvarez-Iglesias V Pinheiro MF Whittle MR Brehm A Gómez J 《Forensic science international》2005,150(2-3):191-198
A qualitative and quantitative analytical method was developed and validated for the determination of 49 licit and illicit drugs in oral fluid. Small oral fluid samples, volume 1mL, were collected from volunteers using a modified Omni-Sal device and the analytes were extracted from an oral fluid/buffer mixture using a single Bond Elut Certify solid phase extraction cartridge. Liquid chromatography-tandem mass spectrometry (LC-MS-MS) and gas chromatography-repetitive full scan mass spectrometry (GC-MS) were used in parallel to analyze the extracts for the targeted drugs. Extracts were analyzed by GC-MS in their underivatized form and as their pentafluoropropionyl derivatives. Deuterated internal standards were used for quantification of drugs of abuse by LC-MS-MS to minimize matrix effects. Methadone-d(9) and tumoxetine were used as the internal standards for quantification of non-derivatized and derivatized analytes respectively by GC-MS. Linearity was demonstrated over the range 5-200 ng/mL and limits of detection were less than 4 ng/mL for each drug analyzed. The method demonstrated acceptable recoveries for most of the analytes and good intra- and inter-day precision. Acquisition of data by repetitive full scan GC-MS allows the addition of further analytes to the target menu. 相似文献
25.
Risk factors associated with the likelihood of being sexually victimized by a stranger or friend/acquaintance since being on the street was examined among 372 homeless and runaway youth. Young people were interviewed on the streets and in shelters by outreach workers using a systematic sampling strategy. Youth who engaged in more high-risk behaviors were expected to be at greater risk for sexual victimization by both known and unknown assailants. Results indicated that for females, running from home for the first time at an earlier age was associated with sexual victimization by both a stranger and friend/acquaintance. However, engaging in deviant subsistence strategies, survival sex, and grooming predicted being sexually victimized by a friend/acquaintance. For males, survival sex and grooming predicted stranger sexual victimization, whereas sexual orientation was associated with sexual victimization by a friend/acquaintance. Overall, 35% of the sample had been sexually victimized. 相似文献
26.
Survival analysis: A survey 总被引:1,自引:0,他引:1
This paper is a survey of statistical methods used to analyze the length of time until a specified event occurs. These models have often been used to analyze the survival times (i.e., time until death) of medical patients, and so the term survival analysis is natural. In criminology, the main application of these models has been to analyze the time until recidivism, but many other applications are possible. The paper summarizes the statistical literature on survival analysis, and describes its applications in criminology. The methods are illustrated by an application to the prediction of time until recidivism for a sample of North Carolina prison releasees. 相似文献
27.
28.
Marta Concheiro Ana de Castro Oscar Quintela Manuel Lpez-Rivadulla Angelines Cruz 《Forensic Science International Supplement Series》2005,150(2-3):221
This paper describes the analytical methodology for the determination of MDMA, MDA, MDEA and MBDB in oral fluid. After a liquid–liquid extraction, the analysis was carried out by high performance liquid chromatography (HPLC), with fluorescence detection. The detector wavelength was fixed at 285 nm for excitation and 320 nm for emission. The mobile phase, a mixture of phosphate buffer (pH = 5) and acetonitrile (75:25), and the column, Kromasil 100 C8 5 μm 250 mm × 4.6 mm, allowed good separation of the compounds in an isocratic mode in only 10 min. The method was validated and showed good limits of detection (2 ng/mL) and quantitation (10 ng/mL) for all the amphetamine derivatives. No interfering substances were detected. A stability study of these compounds in oral fluid stored at three different temperatures (−18, 4 and 20 °C) over 10 weeks was conducted, showing a time-dependent degradation of the four compounds. 相似文献
29.
Ana M. Goy-Yamamoto 《Asia Europe Journal》2004,2(2):271-282
This paper deals with the issue of Japanese youth as the social group that is (r)evolutionising the consumption trends in their society by a cultural change in values and lifestyles. These changes are reflected in new ways of social relations, work, gender issues and mainly consumption patterns. Japanese youth is creating a pop culture of their own that is spreading around East and South-East Asia, affecting their consumption trends as well. Such influence confers a new identity to the region that will be a key issue for marketers in the 21st century.The author thanks the help of the Spanish Ministry of Industry and Technology through the R&D Project BS02003-07810, that enables the funding of this ongoing research. 相似文献
30.
Résumé Les statistiques fédérales au Canada comme aux états-Unis démontrent une croissance alarmante des retours en détention, au
cours de la mise en liberté sous condition. Le modèle de gestion du risque qui émerge actuellement dans le contexte d’une
?nouvelle pénologie? semble mener inévitablement à l’augmentation de ces taux de retour. L’étude présentée dans cet article
examine le processus de libération et le taux de retour qui en découle, enprivilégiant l’analyse desprises de décision et
les mécanismes de gestion des détenus. Dans cette optique, les auteurs ont suivi, pour une période d’un an, tous les hommes
libérés des pénitienciers du Québec en 1993. L’analyse a mis en évidence que le modèle de gestion de risque est à base du
processus de gestion des détenus et semble avoir uneffet notable sur le ?recyclage? des délinquants. De plus, le type de libération
et le type des condition de libération, plut?t que le nombre de condition, font de certains détenus des candidats plus vulnérables
aux mécanismes de gestion derisque. Les ?retours? à la suite de manquements aux conditions de mise en liberté sont importants
et le système carcéral s’alimente donc de plus en plus de ses propres libérés.
相似文献