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   3285篇
  免费   316篇
  国内免费   44篇
耳鼻咽喉   8篇
儿科学   71篇
妇产科学   9篇
基础医学   293篇
口腔科学   6篇
临床医学   405篇
内科学   142篇
皮肤病学   5篇
神经病学   1791篇
特种医学   30篇
外国民族医学   2篇
外科学   86篇
综合类   168篇
一般理论   1篇
预防医学   359篇
眼科学   9篇
药学   146篇
  1篇
中国医学   2篇
肿瘤学   111篇
  2024年   5篇
  2023年   71篇
  2022年   40篇
  2021年   112篇
  2020年   113篇
  2019年   175篇
  2018年   159篇
  2017年   142篇
  2016年   127篇
  2015年   113篇
  2014年   153篇
  2013年   490篇
  2012年   107篇
  2011年   104篇
  2010年   106篇
  2009年   142篇
  2008年   157篇
  2007年   122篇
  2006年   142篇
  2005年   110篇
  2004年   91篇
  2003年   80篇
  2002年   77篇
  2001年   74篇
  2000年   43篇
  1999年   65篇
  1998年   66篇
  1997年   53篇
  1996年   41篇
  1995年   32篇
  1994年   39篇
  1993年   28篇
  1992年   27篇
  1991年   31篇
  1990年   28篇
  1989年   45篇
  1988年   30篇
  1987年   28篇
  1986年   15篇
  1985年   21篇
  1984年   8篇
  1983年   6篇
  1982年   3篇
  1981年   3篇
  1980年   3篇
  1979年   4篇
  1977年   4篇
  1976年   2篇
  1975年   4篇
  1972年   2篇
排序方式: 共有3645条查询结果,搜索用时 31 毫秒
1.
The objective of the present study was the development and validation of the method for determining AMB-FUBINACA and its metabolite - AMB-FUBINACA O-desmethyl acid – in blood samples, followed by verification of the method in toxicological judicial and forensic medicine practice employing the example of post-aggression suicide. Most likely in consequence of development of adverse effects resulting in psychotic symptoms, a male being under the influence of the synthetic cannabinoid AMB-FUBINACA and the new synthetic opioid U-47700, mortally wounded his female partner and subsequently committed suicide. Identification and determination of the afore-mentioned xenobiotics in blood samples collected from the male and female victims were performed employing high performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS). The analytes were isolated from blood samples using the solid phase extraction (SPE) method. The blood samples collected from the male and female demonstrated respectively 110 and 196 ng/mL of AMB-FUBINACA O-desmethyl acid metabolite, 1935 and 357 ng/mL of U-47700, 250 and 200 ng/mL of N-desmethyl-U-47700, as well as 410 and 200 ng/mL of N,N-didesmethyl-U-47700. The concentration values of new psychoactive substances (NPS’s) in blood samples originating from the male and female were within the ranges encountered in cases of poisoning, including these resulting in death. Nevertheless, the evident signs of exsanguination proof that the woman was alive when she sustained lethal injuries. The presented cases illustrate the difficult to be anticipated effect exerted on the users by NPS’s.  相似文献   
2.
3.
ObjectivesA suicide attempt (SA) is a major risk factor of recurrent SA in adolescence and may be associated with psychological or social problems in the future. REPEATERS is a longitudinal study which examines the long-term psychosocial outcome of adolescents following attempted suicide. It focuses on the impact of early recurrence (i.e., within the first year of the index SA) – data which is, in fact, poorly documented.MethodsTen years after the index SA, a self-reporting questionnaire was sent to all adolescents who had attempted suicide and were followed up by the CHRU (Regional University Hospital Centre) de Nancy, France, between 1994 and 2003 and their parents. The purpose of this questionnaire was to assess psychosocial outcomes. Data concerning SA were collected retrospectively.ResultsAfter ten years, 146 of the 309 adolescents who had attempted suicide and were participating in the study had responded: 90% lived with a partner and 41% had children. The mean (SD) current emotional life of suicide attempt survivors scored 7.3 (2.3) on a scale of 0 to 10. Compared to the general population of the same age, responders felt more depressed than their peers (29% vs. less than 8% of males and 20% of females), had more suicidal thoughts (14% vs. 5%), and had more SAs (27% vs. 0.3%). Moreover, the risk of recurrence over the ten year period was associated with suicide recurrence in the first year after the index SA (odds ratio [OR] = 2.3; 95% confidence interval [CI] = 1.1–4.9) and with a lower level of education at ten years (OR = 0.37; 95% CI = 0.19–0.45).ConclusionsAlthough a favorable outcome was reported ten years after the event for the majority of adolescents who had attempted suicide, some with a lower level of education were nevertheless at increased risk of recurrence and depression. Post-intervention strategies are therefore essential in order to evaluate risk factors which may persist if not taken into consideration.  相似文献   
4.
5.
6.
7.
《L'Encéphale》2022,48(2):196-205
ObjectivesIn the context of the present re-examination of the French bioethical laws by the National Advisory Ethics Committee (“Comité consultatif national d’éthique”: CCNE), a recent survey indicated a request of the public opinion to obtain a medical aid in end of life and a so-called “assisted suicide”. This led psychiatrists to re-consider their role and deontological position which usually led them to consider a request for an assistance in suicide as – a priori – a pathological demand, occurring within a suicidal crisis. The present article intends to: 1) describe the laws and practices of countries which allow medically assisted end of life help procedures; 2) clarify the definitions of “assisted suicide”, “assistance to suicide” and “euthanasia”; 3) consider available epidemiological data and the roles given to doctors and, more specifically psychiatrists, in these procedures; 4) analyse the rationale behind these demands. These considerations should enable French psychiatrists to clarify their position when facing requests for a medical aid in dying.MethodsFour European countries (Switzerland, the Netherlands, Belgium, Luxemburg) and Oregon (the first US state to introduce legislation) were considered, since they accumulated and published a large amount of experiences and data about “assisted suicide” and medical help in dying. In total, 127 articles were selected, mainly from PubMed and Cairn databases, published between 1997 and 2020. These articles deal with legal considerations, epidemiological data, ethical and sociological considerations.ResultsLaws and practices differ notably according to the state/country. In Belgium, the Netherlands and Luxemburg, as in Oregon, the medical help in dying has been de-criminalized, as long as certain legal criteria are met. In Switzerland, where no specific law exists in the penal code, non-governmental associations have benefited from the legal vacuum and organized the practice of “assisted suicide” for “altruistic motives”. In the scientific and legal literature, the terms used to describe and define the medical help in dying upon request differ greatly. In France, the National Advisory Ethics Committee defines euthanasia (“euthanasie”), assisted suicide (“suicide assisté”) and suicide assistance (“assistance au suicide”). Available epidemiological data, whatever the country considered, indicate that requests for a medical aid in dying are expressed mainly by patients aged over 60 years and suffering from cancer. Psychiatric diseases account for only 1% to 3%. Most often, systematic assessment by a psychiatrist is neither requested nor made, when the demand does not occur during a primary psychiatric illness. In the case of an existing primary psychiatric pathology, a psychiatrist assesses the case against formal legal predefined criteria. This latter practice was only recently introduced, after some feedback and after legal actions had been brought to Court. When the underlying motivations of the request are considered, it appears that, even in the absence of an evolving psychiatric condition, several psychological or psychopathological reasons prevail such as spirituality, attachment style, social isolation, despair, depression… which should greatly benefit psychiatric exploration, investigation and expertise.ConclusionIn some countries, the request for medically assisted help in dying has become a legal and social reality. In France, where the public debate is still open, it should be emphasized that a psychiatric assessment and interview should be systematically provided to any person requesting medical assistance to die or commit suicide. It is the commitment of psychiatrists to understand the implicit demands and unexpressed motives underlying this request which have strong links with the unique life-events and emotional experiences of the person. The psychiatrist has a unique role in the contextualization of such a request.  相似文献   
8.
9.
10.
Since the mid-1990s and its recognition as a “public health priority”, suicide has remained at the centre of various mental health policies. With one of the highest suicide deaths at the European level, France is particularly impacted by this issue. The predictability of a self-aggressive act remains the main concern for a patient in suicidal crisis. The Dangerous Emergency Risk Assessment, established at the consensus conference in October 2000, marked a turning point in the analysis of suicidal risk. Through a triple evaluation corresponding to each of its three items, this tool has made it possible to better clarify the proposed therapeutic management and in particular the decision or not of a hospitalization. However, the latter remaining perfectible in its analysis, a mapping of key points at the clinical level has been proposed in this article in order to have the widest possible vision of a patient in suicidal crisis. The assessment of suicidal potential remains subject, despite everything, to a part of improbability. As such, a brief hospitalization in the context of the suicidal crisis has all its interest whether in front of a suicidal person or in front of a suicidal person, this in the absence of a decompensated psychiatric pathology, in order to allow a “distance” from the anxiety-provoking environment and to create a bond of trust facilitating outpatient work.  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