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   2710篇
  免费   249篇
  国内免费   39篇
耳鼻咽喉   9篇
儿科学   90篇
妇产科学   7篇
基础医学   334篇
口腔科学   37篇
临床医学   417篇
内科学   182篇
皮肤病学   6篇
神经病学   262篇
特种医学   24篇
外科学   177篇
综合类   386篇
一般理论   2篇
预防医学   635篇
眼科学   36篇
药学   280篇
  11篇
中国医学   80篇
肿瘤学   23篇
  2024年   4篇
  2023年   50篇
  2022年   54篇
  2021年   71篇
  2020年   95篇
  2019年   61篇
  2018年   79篇
  2017年   76篇
  2016年   101篇
  2015年   85篇
  2014年   146篇
  2013年   264篇
  2012年   173篇
  2011年   165篇
  2010年   135篇
  2009年   145篇
  2008年   137篇
  2007年   161篇
  2006年   165篇
  2005年   107篇
  2004年   113篇
  2003年   85篇
  2002年   62篇
  2001年   81篇
  2000年   59篇
  1999年   31篇
  1998年   26篇
  1997年   34篇
  1996年   21篇
  1995年   27篇
  1994年   21篇
  1993年   26篇
  1992年   32篇
  1991年   24篇
  1990年   10篇
  1989年   8篇
  1988年   10篇
  1987年   14篇
  1986年   7篇
  1985年   6篇
  1984年   6篇
  1983年   6篇
  1982年   5篇
  1981年   6篇
  1980年   2篇
  1972年   1篇
  1971年   1篇
排序方式: 共有2998条查询结果,搜索用时 0 毫秒
61.
62.

Objective

The objectives of this paper are to discuss the results of a workshop conducted at EACH 2012. Specifically, we will (1) examine the link between communication, clinical reasoning, and medical problem solving, (2) explore strategies for (a) integrating clinical reasoning, medical problem solving, and content from the broader curriculum into clinical communication teaching and (b) integrating communication into the broader curriculum, and (3) discuss benefits gained from such integration.

Methods

Salient features from the workshop were recorded and will be presented here, as well as a case example to illustrate important connections between clinical communication and clinical reasoning.

Results

Potential links between clinical communication, clinical reasoning, and medical problem solving as well as strategies to integrate clinical communication teaching and the broader curricula in human and veterinary medicine are enumerated.

Conclusion

Participants expressed enthusiasm and keen interest in integration of clinical communication teaching and clinical reasoning during this workshop, came to the idea of the interdependence of these skills easily, and embraced the rationale immediately.

Practice implications

Valuing the importance of communication as clinical skill and embracing the interdependence between communication and thought processes related to clinical reasoning and medical problem solving will be beneficial in teaching programs.  相似文献   
63.
64.
65.
66.
Electron Paramagnetic Resonance (EPR) is the only spectral method for direct detection of paramagnetic substances. EPR technology can be used for the qualitative and quantitative analysis of free radicals and transition metals in solid, liquid, gas, cell and living samples. It is widely used in chemistry, material science, life science, quantum physics and other researches. This report discusses the basic principle, instrument structure, common problem solving, daily maintenance, and management model of the electron paramagnetic resonance spectrometer (German Bruker A-200) in the State Key Laboratory of Natural and Biomimetic Drugs of Peking University Health Science Center, so that the instrument can be fully used for various scientific researches.  相似文献   
67.
Convection in the solar interior is thought to comprise structures on a spectrum of scales. This conclusion emerges from phenomenological studies and numerical simulations, though neither covers the proper range of dynamical parameters of solar convection. Here, we analyze observations of the wavefield in the solar photosphere using techniques of time-distance helioseismology to image flows in the solar interior. We downsample and synthesize 900 billion wavefield observations to produce 3 billion cross-correlations, which we average and fit, measuring 5 million wave travel times. Using these travel times, we deduce the underlying flow systems and study their statistics to bound convective velocity magnitudes in the solar interior, as a function of depth and spherical-harmonic degree . Within the wavenumber band  < 60, convective velocities are 20–100 times weaker than current theoretical estimates. This constraint suggests the prevalence of a different paradigm of turbulence from that predicted by existing models, prompting the question: what mechanism transports the heat flux of a solar luminosity outwards? Advection is dominated by Coriolis forces for wavenumbers  < 60, with Rossby numbers smaller than approximately 10-2 at r/R = 0.96, suggesting that the Sun may be a much faster rotator than previously thought, and that large-scale convection may be quasi-geostrophic. The fact that isorotation contours in the Sun are not coaligned with the axis of rotation suggests the presence of a latitudinal entropy gradient.  相似文献   
68.
Objectives: To determine how prepared for dental practice graduates from the integrated problem‐based learning (PBL) dental undergraduate curriculum at The University of Hong Kong (HKU) perceive themselves to be and to identify factors associated with self‐perceived preparedness. Materials and methods: A postal questionnaire was sent to five cohorts of dentists who had graduated from HKU’s integrated PBL curriculum between 2004 and 2008. Using a 4‐point Likert scale, the questionnaire assessed the self‐perceived level of preparedness in 59 competencies grouped in nine domains. Responses were dichotomised into ‘poorly prepared’ and ‘well prepared’. Results: The response rate was 66% (159/241). The mean proportion (± standard deviation) of respondents indicating well‐preparedness was 72.0 ± 15.1% overall, and for each domain was as follows: general patient management, 93.1 ± 12.1%; practice management, 81.0 ± 22.2%; periodontology and dental public health, 73.5 ± 19.3%; conservative dentistry, 92.5 ± 13.1%; oral rehabilitation, 62.8 ± 24.0%; orthodontics, 23.0 ± 32.9%; managing children and special‐needs patients, 64.8 ± 28.9%; oral and maxillofacial surgery, 52.2 ± 25.2%; and drug and emergency management, 84.7 ± 22.6%. The odds of self‐perceived well‐preparedness were increased for cohorts graduating in 2004 and 2005 and graduates working in a non‐solo dental practice. Conclusions: Dental graduates of HKU’s integrated PBL curriculum felt well prepared for the most fundamental aspects of dental practice. However, apparent deficiencies of training in orthodontics and oral and maxillofacial surgery will need to be addressed by continuing education, postgraduate training and planning for the new 6‐year undergraduate curriculum in 2012.  相似文献   
69.
Aim: To determine the way in which Malmö University dental graduates perceive their problem‐based dental education and evaluate their professional satisfaction. Method: The first five cohorts (graduating in years 1995–1999) of the problem‐based curriculum were invited to participate. Of 166 graduates, 77% responded to a questionnaire comprising 20 questions on aspects of their dental education, professional situations and interest in postgraduate education. They were asked to rank their perception of their dental education and satisfaction with their professional situation on a visual analogue scale (VAS) with endpoints ranging from ‘Not at all’ (1) to ‘Very well’ (10). For other statements, the markings were made on a Likert scale from 1 (not important/not satisfied) to 5 (very important/very satisfied). There were also open‐ended questions. Results: Most respondents perceived their education to prepare them well for a career in dentistry (median score VAS 8), and 90% rated above six on a VAS for their professional satisfaction as dentists. Importance and satisfaction were highly correlated with principles of the curriculum: holistic view, oral health, lifelong learning, integration between theory and clinic, and clinical competence. Forty‐five per cent of the graduates noted the problem‐based learning approach as the most valuable asset of their education, and 19% cited training in oral surgery as a deficit. Of the respondents, 77% expressed interest in specialist training and 55% in research education. Conclusion: Problem‐based education was perceived to prepare graduates well for their profession, and their professional satisfaction was high.  相似文献   
70.
Individuals with intellectual and developmental disabilities are often prescribed psychotropic medication to treat behaviors such as aggression and self-injury. Evaluation of these medications is often based on caregiver report or changes in frequency of behavior. The purpose of this research was to characterize the rate and function of problem behavior within an analogue functional analysis for three individuals diagnosed with autism as they experienced psychotropic medication changes. Results revealed that problem behavior, in terms of rate and function, were different across the various drugs prescribed. These data suggest that medication changes did not only produce changes in the rate of behavior but also in its function; that is, in behavioral parlance, medications can become motivating operations. This finding is lending support for the usefulness of conducting functional assessments throughout psychotropic medication changes. The importance of monitoring functional changes of target behavior is that concurrent behavioral interventions may have to be adjusted in accordance with those altered functional properties. Recommendations regarding future directions for research and implications of this line of research for treatment are discussed.  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