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   412篇
  免费   7篇
  419篇
  2022年   10篇
  2021年   12篇
  2020年   12篇
  2019年   20篇
  2018年   15篇
  2017年   19篇
  2016年   15篇
  2015年   10篇
  2014年   12篇
  2013年   30篇
  2012年   7篇
  2011年   13篇
  2010年   9篇
  2009年   8篇
  2008年   6篇
  2007年   7篇
  2005年   11篇
  2004年   6篇
  2003年   7篇
  2002年   5篇
  1998年   3篇
  1997年   3篇
  1995年   5篇
  1994年   4篇
  1993年   5篇
  1990年   7篇
  1989年   9篇
  1983年   3篇
  1982年   5篇
  1981年   4篇
  1976年   4篇
  1975年   3篇
  1974年   6篇
  1973年   6篇
  1972年   3篇
  1970年   7篇
  1969年   4篇
  1968年   5篇
  1967年   7篇
  1966年   6篇
  1965年   9篇
  1964年   4篇
  1963年   6篇
  1962年   4篇
  1961年   10篇
  1960年   6篇
  1958年   7篇
  1957年   4篇
  1956年   3篇
  1955年   6篇
排序方式: 共有419条查询结果,搜索用时 0 毫秒
111.
112.
Editorial     

Editorial Introduction

Editorial  相似文献   
113.
Although Directive 2001/20/EC of the European Parliament and of Council of 4 April 2001 on the approximation of the laws regulations and administrative provisions of the Member States relating to the implementation of good clinical practice in the conduct of clinical trials on medicinal products for human use does not contain an exception for emergency situations, and requires the informed consent of a legal representative in all cases where research is conducted on legally competent individuals who are unable to give informed consent, in Poland, emergency research can be conducted without consent. Polish regulations on emergency research can hardly be treated as a result of intentional legislative policy. Our provisions arise from multiple and sophisticated interpretations of different regulations that govern medical experiments on human subjects and clinical trials. These interpretations can be summarized as follows: (1) There are two categories of medical experiments: therapeutic and non-therapeutic experiments. Emergency research without consent may be conducted in the category of therapeutic experiment only (therapeutic experiment consists of the introduction by the physician of new or only partially proven diagnostic, therapeutic or preventive methods in order to achieve direct benefit to the health of the patients, and it can be carried out when hitherto applied methods were ineffective or their effectiveness was insufficient). (2). Emergency research may be conducted without consent if there is a situation of great urgency in which the research subject's life is in danger and there is no possibility of obtaining immediate consent from the research subject him or herself, or from his or her legal representative or guardianship court, and the research subject has not refused to give consent for the participation in an emergency therapeutic experiment. The legal representative or guardianship court shall be provided with all the relevant information concerning subject's participation in an experiment as soon as possible. All projects of emergency research with intent to be done without the research subject's consent must be approved by an independent bioethics committee. Because these five requirements seem to provide insufficient protection for a subject's autonomy and rights it is necessary to add to them two other conditions: (1) the emergency research could not be conducted using other research participants capable of giving informed consent; and (2) informed consent for continued participation in the emergency research shall be obtained from either the participant him or herself or the legally authorized representative as soon as possible (requirement of obtaining deferred consent). A consolidated single Act that will govern all aspects of medical experiments on human subjects, including emergency research, should be prepared and enacted as soon as possible.  相似文献   
114.
115.
116.
117.
The present paper deals with the problem of evaluating empirical evidence for therapeutic decisions in medicine. The article discusses the views of Nancy Cartwright and John Worrall on the function that randomization plays in ascertaining causal relations with reference to the therapies applied. The main purpose of the paper is to present a general idea of alternative method of evaluating empirical evidence. The method builds on data analysis that makes use of rough set theory. The first attempts to apply the method show that it is an interesting alternative to randomized controlled trials.  相似文献   
118.
The perspective of trunk deformity is a matter of special concern for adolescent idiopathic scoliosis (AIS) patients. No research group has ever reported interviewing patients and their parents regarding differences in perception of body appearance in the course of Cheneau brace treatment. We aimed to investigate the level of agreement in the field of concerns and perceptions of spinal appearance in relation to brace- and scoliosis-related data between parents and female patients with AIS, treated with a Cheneau brace, by means of the Spinal Appearance Questionnaire-pl (SAQ-pl). In this cross-sectional study forty-one pairs of parents and female patients with AIS were asked to separately complete the Polish versions of the Spinal Appearance Questionnaire-pl patient form (SAQ-pl patient form) and the SAQ-pl parent form. Age of patients was 13.60 years SD 1.60 (range 10–17). Patients scored 2.70 (SD 0.60) and parents scored 2.70 SD 0.60 in the total score of the SAQ-pl. The study groups do not differ significantly in regards to the SAQ-pl results. The percentage of consistent answers on SAQ-pl items ranges from 34.10 % (item 20) to 78 % (item 8). Height, age and brace-wearing time per day, were significantly related to the differences in the patient-parent General perception of body shape (r s  = ?0.51, r s  = ?0.34, r s  = 0.36, respectively). Parents and female patients with AIS have similar concerns and perceptions of spinal appearance. The discrepancies in General perception of spinal appearance between parents and AIS females decrease with age of patient. Parental emotional support may contribute to minimizing the risk factors of psychological impairment, especially in late adolescents with AIS.  相似文献   
119.
Maria Rogińska 《Zygon》2016,51(4):904-924
This article deals with phenomena occurring at the interface of the existential, the religious, and scientific inquiry. On the basis of in‐depth interviews with Polish physicists and biologists, I examine the role that science and religion play in their narrative of the meaning of the Universe and human life. I show that the narratives about meaning have a system‐related (“amalgam") character that is associated with responses to adjacent metaphysical questions, including those based on scientific knowledge. I reconstruct the typical amalgam questions of Polish scientists and come to a conclusion about the stability of religious and nonreligious amalgams in this group. Critically referring to the thesis concerning the secularizing impact of science, I conclude that science by itself does not have a destructive effect on Polish scientists’ confidence that life and the Universe are meaningful, but is rather an exacerbating factor of the existing worldview system.  相似文献   
120.
Research on the association between social anxiety and social media usage remains inconclusive: despite the preference for computer-mediated communication there is currently no clear empirical support for social anxiety being associated with longer duration of social media use. Self-report measures for social anxiety that are adapted for the context of social media could facilitate further research. The current study aimed to develop a Swedish version of the recently developed Social Anxiety Scale for Social Media Users (SAS-SMU), evaluate its psychometric properties, and explore associations between different uses of social media and social anxiety. Three factors were retained for SAS-SMU with excellent internal consistency. SAS-SMU evidenced convergent validity with measures of social anxiety, negative convergent validity with satisfaction with life, and divergent validity with measures of obsessive-compulsive disorder, depression and generalized anxiety disorder. Results indicated that higher levels of social anxiety were associated with passive and active use as well as longer duration of social media use in general, which is at odds with a previous study where passive use remained the only significant predictor for social anxiety.  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