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   95篇
  免费   5篇
各国政治   8篇
工人农民   5篇
世界政治   1篇
外交国际关系   2篇
法律   62篇
中国政治   1篇
政治理论   21篇
  2023年   2篇
  2022年   1篇
  2021年   2篇
  2020年   5篇
  2019年   7篇
  2018年   7篇
  2017年   5篇
  2016年   8篇
  2015年   5篇
  2014年   1篇
  2013年   9篇
  2012年   5篇
  2011年   5篇
  2010年   3篇
  2009年   7篇
  2008年   1篇
  2007年   2篇
  2006年   6篇
  2005年   7篇
  2003年   5篇
  1999年   1篇
  1998年   2篇
  1996年   1篇
  1993年   1篇
  1987年   1篇
  1985年   1篇
排序方式: 共有100条查询结果,搜索用时 0 毫秒
81.
There is limited published data to aid interpretation of analytical findings from hair analysis. The aim of the study was to collate 6-monoacetylmorphine (6-AM) and morphine concentrations in head and pubic hair from heroin users and to propose reference ranges and relate these to the amount of heroin used. The ratio of morphine-to-6-AM was also investigated. A total of 82 head hair samples divided into 173 segments of various lengths and 15 pubic hair samples were collected at postmortem from heroin users. The hair was analysed using a previously published method. A statistical evaluation demonstrated that in head hair, the lower, middle and upper concentration ranges of 6-AM were 0.1–0.9, 0.9–12.5 and 12.5–154.1 ng/mg and those of morphine were 0.1–0.8, 0.8–6.0 and 6.0–36.3 ng/mg. In pubic hair, the lower, middle and upper concentration ranges of 6-AM were 0.2–0.5, 0.5–2.3 and 2.3–18.2 ng/mg and those of morphine were 0.2–0.4, 0.4–2.4 and 2.4–13.3 ng/mg. The morphine-to-6-AM ratio showed a large variation. The ratio tended to decrease from proximal to distal segments. The statistical results suggest low, middle and high concentration ranges which we propose can be used for estimating the amount of heroin consumed into corresponding low or occasional, regular or habitual and heavy or excessive drug use. The ratio of morphine-to-6-AM showed great variation and did not support the proposal that a ratio less than 0.77 is needed to prove ingestion of heroin.  相似文献   
82.
It has been widely suggested that the global market in counterfeit, falsified and illegally traded medicines has expanded at a tremendous rate in recent years, offering lucrative opportunities for criminal entrepreneurs with little legal risk. However, with a few exceptions, there has been little criminological research conducted on the trade’s actors and organisation. Of the few studies that are available, most position the supply of these products in the context of ‘transnational organised crime’, often presupposing the overwhelming presence of large-scale, hierarchical structures in the trade. This article, based on two extensive research projects in the United Kingdom and the Netherlands, offers an account of the illicit supply of medicines in two European jurisdictions. The research outlines the nature and dynamics of the trade including the roles played by each national context as nodes in the global supply chain. The focus then shifts to the modus operandi, actors, online trade and social organisation in both countries. In contradistinction to the ‘transnational organised crime’ narrative, the empirical data outlined in this paper demonstrates that actors and networks involved in the trade are highly flexible and complex structures that straddle the categories of licit and illicit, online and offline, and global and local. This suggests that operations supplying illicit medicines vary largely in terms of size, reach, organisation and legality.  相似文献   
83.
ABSTRACT

Significant research has been devoted to analyzing community gardens, including their benefits and problems. This article contributes to debates about community gardens by using concepts from feminist geography and food justice research to reflect upon the challenges and possibilities of community gardening in small, peripheral cities with large immigrant populations. We argue that these concepts provide a useful framework to enact ecofeminist visions through community gardens, especially in places dominated by immigrant populations that are particularly marginalized in the present political era. Our case study garden, Raíces Del Sur, was located in the City of Passaic, a low-income, post-industrial urban center surrounded by suburbs in Passaic County, New Jersey. As activists involved in the making of the Raíces Del Sur community garden to different degrees, and as researchers committed to an ecofeminist vision, we draw attention to the need for greater ecofeminist engagement with community gardening initiatives in cities throughout New Jersey.  相似文献   
84.
ABSTRACT

As the fashion scene becomes progressively digitalised, new dynamics emerge between consumers, content, and fashion professionals. Reflecting on forms of online interaction, this article explores contemporary audience engagement in the context of mainstream androgynous fashion. First, I consider the effects of the digitalisation of fashion communication in terms of the particular role played by sentiments and emotions. Due to the brevity, immediacy and informality of online communication, I argue, affect emerges as an increasingly crucial component of the fashion discourse. I then turn to an assessment of both the dangerous implications and the positive potential of such phenomenon. On the one hand, I explore cases where members of the public interact directly with fashion intermediaries on social media and highlight how direct engagement leads audiences to internalise the scrutiny of professionals and make emotional investments in their implicit promises. On the other, I examine Tumblr blogs as an example of forms of indirect audience engagement with fashion. In this context, acquiring a distance from fashion mediation, consumers are able to engage in practices of creativity and semantic alterations of the dominant aesthetics.  相似文献   
85.
Gender gaps in some aspects of the labour market in Europe narrowed during the recent economic crisis, mainly because men were hit harder and because of the ‘added worker effect’. Therefore, the number of families with a single wage-earner, in particular female-headed households, increased. However, the differential impact of the crisis on male and female labour force in part was an unintended effect of the ‘gendered’ and ‘racialized’ structure of the labour market. Occupational concentration in care and reproductive work and the public sector in fact protected women from unemployment. Adopting an intersectional approach and using individual and household data from the Labour Force Survey from 2008 to 2015, the aim of this paper is to assess to what extent the gendered and ‘racialized’ structure of the Italian labour market has changed, both from a quantitative and qualitative point of view, and to what extent the increase in female breadwinner families, especially among migrants, hides widening or narrowing intersectional inequalities by gender and citizenship.  相似文献   
86.
The Journal of Technology Transfer - A growing stream of the academic literature has investigated the factors that hamper the participation of women researchers in patenting and commercialization...  相似文献   
87.
The thermal development of latent fingerprints on paper surfaces is a simple, safe, and chemicals‐free method, based on the faster heating of the substrate underlying the print residue. Microwave heating is proposed for the first time for the development of latent fingerprints on cellulose‐based substrate, in order to add to the thermal development mechanism the further characteristic of being able to heat the fingerprint residues to a different extent with respect to the substrate, due to the intrinsic difference in their dielectric properties. Numerical simulation was performed to confirm and highlight the selectivity of microwaves, and preliminary experimental results point out the great potentialities of this technique, which allowed developing both latent sebaceous‐rich and latent eccrine‐rich fingerprints on different porous surfaces, in less than 30 sec time with an applied output power of 500 W. Microwaves demonstrated more effectiveness in the development of eccrine‐rich residues, aged up to 12 weeks.  相似文献   
88.
Based on the recognition of the importance of the commonly referred to as factual powers in Mexico’s political life, and specifically in the media power, the author calls upon our attention the insufficient analysis and research on the subject and underscores the need to overcome this deficit by systematically and rigorously approaching it as a subject of inquiry and as part of a research agenda. This article brings to the fore the basic points of such an agenda and proposes a multidisciplinary analytical approach to develop it. The author argues that the studies’ findings can be applied to constructing limits for the exercise of media power, which are indispensable for national democratic development.  相似文献   
89.
United Nations Security Council Resolution 1325 is a landmark pronouncement on the Women, Peace and Security Agenda. Not only does this resolution highlight the important role of the involvement of women in peace processes, but it also stresses the importance of their equal participation in all efforts for the maintenance and promotion of peace. Furthermore, it also triggers the approval of some other resolutions, which are all further elaborations on that first document. The aim of this paper is to analyse, from a cognitive linguistic perspective, the way in which women are actually narrated in these pronouncements by means of the two conceptual metaphors that are most often repeated: WOMEN ARE VICTIMS, typically found in earlier resolutions, and WOMEN ARE AGENTS OF CHANGE, as the metaphor that has gained more strength and visibility as new resolutions have continued to appear. As metaphors are the cognitive lenses we use to make sense of abstract concepts, it is important that we look closely at each of those metaphors to see how they shape the characterization of women in times of armed conflict and post-conflict and, in doing so, how they guide our understanding and behaviour towards them.  相似文献   
90.
What are the core services of start-up incubators, and how can the be managed best? We use five incubator archetypes (university, regional business, company-internal, independent commercial, and virtual incubators) to identify key services and describe their implementation. Case-research was conducted on 10 incubators (from an estimated total of 50) in Italy. We concluded that differences in competitive scope (industry, geography, and segment focus) and differences in strategic objectives (profit versus non-for-profit) influence the nature, quality and implementation of incubation services and the way they are managed.  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