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   45959篇
  免费   1097篇
  国内免费   191篇
电工技术   586篇
综合类   633篇
化学工业   5158篇
金属工艺   722篇
机械仪表   1087篇
建筑科学   870篇
矿业工程   392篇
能源动力   544篇
轻工业   2406篇
水利工程   631篇
石油天然气   52篇
武器工业   4篇
无线电   2391篇
一般工业技术   4069篇
冶金工业   21604篇
原子能技术   233篇
自动化技术   5865篇
  2023年   230篇
  2022年   156篇
  2021年   193篇
  2020年   63篇
  2019年   120篇
  2018年   537篇
  2017年   745篇
  2016年   1147篇
  2015年   859篇
  2014年   541篇
  2013年   598篇
  2012年   2370篇
  2011年   2713篇
  2010年   869篇
  2009年   950篇
  2008年   805篇
  2007年   788篇
  2006年   720篇
  2005年   3451篇
  2004年   2662篇
  2003年   2132篇
  2002年   960篇
  2001年   832篇
  2000年   340篇
  1999年   676篇
  1998年   6267篇
  1997年   3867篇
  1996年   2547篇
  1995年   1474篇
  1994年   1095篇
  1993年   1118篇
  1992年   267篇
  1991年   315篇
  1990年   308篇
  1989年   280篇
  1988年   296篇
  1987年   226篇
  1986年   202篇
  1985年   169篇
  1984年   72篇
  1983年   86篇
  1982年   131篇
  1981年   176篇
  1980年   192篇
  1979年   63篇
  1978年   97篇
  1977年   609篇
  1976年   1321篇
  1975年   99篇
  1971年   49篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.

Definition of the problem

Within the current philosophical debate on the adequate definition of human death, death is defined either as the death of the body or the death of the person. However, the application of these notions leads to several practical conflicts, which can be seen first and foremost in the brain-death debate and the discussions on how to increase organ donation.

Arguments

The conflicts are based in both a dualistic and objectivistic notion of the human being which are implied in both definitions of death. In order to solve these conflicts, we are in need of a nondualistic concept of human being which at the same time enables us to elaborate a first- and second-person perspective on death. On the basis of Helmuth Plessner’s philosophical anthropology, such an integrative concept of death can be developed.

Conclusion

Following this concept, it seems reasonable to abandon the brain-death criterion as the criterion for human death and to fundamentally reform the current information campaigns for organ donation.
  相似文献   
992.
993.
994.

Definition of the problem

This paper deals with the question whether the current German intellectual property right on pharmaceuticals is morally justifiable. To answer this question, I will map the relevant discourse and arrange the different positions with respect to their level of abstraction.

Arguments

I underline that both deontological and consequentialist arguments point out the moral deficits within the system.

Conclusion

The consequentialist position emphasizes the unsatisfying relationship between patented pharmaceutical costs and the number of innovations on the market. The deontological approach on the other hand highlights the dangers to citizens’ autonomy.
  相似文献   
995.
996.

Definition of the problem

The role of stories is well established in the traditions of narrative ethics and casuistry. However, from a methodological point of view, the inclusion of fictional works in moral deliberation remains yet unanswered. The paper explains the potential of dystopias for bioethics by means of selected examples and a critical reconstruction and expansion of existing approaches.

Arguments

By means of literary theories, it is proposed to include moral beliefs that motivate dystopias in coherent reflection and reasoning procedures. Furthermore, dystopia’s potential through socioculturally dense scenarios, a contemporary-historical context, and a sensitization to the moral relevance of language for bioethical research are systematically presented.

Conclusion

The methodological considerations provide, on the one hand, practical points of reference for didactic approaches and, on the other hand, for public deliberation. However, the analysis also shows that dystopias introduce their own moral positions beyond a mere illustration or warning.
  相似文献   
997.

Definition of the problem

The central foundations of successful dental treatment consist of a trustful patient-dentist relationship, the professional and psychosocial expertise of the team treating the patient, and consideration of ethical aspects both during the therapeutic decision-making process and during the subsequent execution of therapy. This is especially true of the dental treatment of (mostly elder) persons with dementia, calling for an in-depth assessment of the various normative implications.

Arguments

In geriatric dentistry in particular, situational dilemmas regarding treatment often arise from specific constellations (e.?g. greatly reduced potential for dental therapy, lack of ability regarding oral hygiene and lack of individual patient responsibility) combined with an acute need for treatment and the necessary involvement of third parties. These dilemmas frequently place additional professional and normative demands on the dentist. The current contribution discusses this specific situation, first by way of theoretical discourse and subsequently with a case-related approach on the basis of two case histories.

Conclusion

It becomes clear here that classic state-of-the-art therapies are replaced by “compromise treatment” in many cases in geriatric dentistry. Such treatment follows divergent diagnostic and therapeutic rules, poses changed requirements in terms of communication and presents specific ethical challenges and pitfalls.
  相似文献   
998.
999.
1000.
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