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   479385篇
  免费   32119篇
  国内免费   9837篇
耳鼻咽喉   5102篇
儿科学   12585篇
妇产科学   8388篇
基础医学   36299篇
口腔科学   10608篇
临床医学   52680篇
内科学   61680篇
皮肤病学   6125篇
神经病学   26439篇
特种医学   10487篇
外国民族医学   35篇
外科学   51411篇
综合类   73635篇
现状与发展   14篇
一般理论   42篇
预防医学   50371篇
眼科学   7291篇
药学   47562篇
  628篇
中国医学   41980篇
肿瘤学   17979篇
  2023年   7717篇
  2022年   14201篇
  2021年   19501篇
  2020年   17976篇
  2019年   23906篇
  2018年   21388篇
  2017年   18160篇
  2016年   15577篇
  2015年   14600篇
  2014年   31078篇
  2013年   32231篇
  2012年   27318篇
  2011年   29456篇
  2010年   23502篇
  2009年   20495篇
  2008年   19783篇
  2007年   19875篇
  2006年   17443篇
  2005年   14774篇
  2004年   11849篇
  2003年   10317篇
  2002年   8089篇
  2001年   7178篇
  2000年   5976篇
  1999年   5062篇
  1998年   4058篇
  1997年   3855篇
  1996年   3350篇
  1995年   3159篇
  1994年   3032篇
  1993年   2390篇
  1992年   2399篇
  1991年   2063篇
  1990年   1818篇
  1989年   1668篇
  1988年   1533篇
  1987年   1329篇
  1985年   5086篇
  1984年   6572篇
  1983年   4878篇
  1982年   5100篇
  1981年   4835篇
  1980年   4268篇
  1979年   3939篇
  1978年   3405篇
  1977年   2479篇
  1976年   2967篇
  1975年   2301篇
  1974年   1995篇
  1973年   1828篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
181.
The profile and reach of physiotherapy has expanded in areas of extended scope of practice, and broader engagement with population needs beyond the individual treatment encounter. These changes raise increasingly complex ethical challenges evidenced by growth in physiotherapy-based ethics studies and discussions. This paper examines how a broad cross section of Australian physiotherapists perceive, interpret, and respond to ethical challenges in their work contexts and how professional codes of conduct are used in their practice. Using an interpretive qualitative methodology, purposive sampling of 88 members of national clinical special interest groups were recruited for focus group discussions. Narrative-based and thematic data analysis identified ethical challenges as emerging from specific clinical contexts, and influenced by health organizations, funding policies, workplace relationships, and individually held perspectives. Five themes were developed to represent these findings: (1) the working environment, (2) balancing diverse needs and expectation, (3) defining ethics, (4) striving to act ethically, and (5) talking about ethics. The results portray a diverse and complex ethical landscape where therapists encounter and grapple with ethical questions emerging from the impact of funding models and policies affecting clinical work, expanding boundaries and scope of practice and changing professional roles and relationships. Codes of conduct were described as foundational ethical knowledge but not always helpful for “in the moment” ethical decision-making. Based on this research, we suggest how codes of conduct, educators, and professional associations could cultivate and nurture ethics capability in physiotherapy practitioners for these contemporary challenges.  相似文献   
182.
183.
184.
ABSTRACT

This work collates data from the analysis of complex mixtures analysed in STRmix during routine no-suspect volume crime work. It interrogates the upload rate for these types of mixtures and which component of the profile has been able to be interpreted for upload. The number of profiles giving multiple uploads and the amount of replicate PCR analysis has been collated.  相似文献   
185.
《Clinical neurophysiology》2019,130(12):2231-2237
ObjectiveThe clinical and neurophysiological characteristics of myoclonus in Angelman syndrome (AS) have been evaluated in single case or small cohorts, with contrasting results. We evaluated the features of myoclonus in a wide cohort of AS patients.MethodsWe performed polygraphic EEG-EMG recording in 24 patients with genetically confirmed AS and myoclonus. Neurophysiological investigations included jerk-locked back-averaging (JLBA), cortico-muscular coherence (CMC) and generalised partial directed coherence (GPDC). CMC and GPDC analyses were compared to those obtained from 10 healthy controls (HC).ResultsTwenty-four patients (aged 3–35 years, median 20) were evaluated. Sequences of quasi-continuous rhythmic jerks mostly occurred at alpha frequency or just below (mean 8.4 ± 1.4 Hz), without EEG correlate. JLBA did not show any clear transient preceding the jerks. CMC showed bilateral over-threshold CMC in alpha band that was prominent on the contralateral hemisphere in the patient group as compared to HC group. GPDC showed a significantly higher alpha outflow from both hemispheres toward activated muscles in the patient group, and a significantly higher beta outflow from contralateral hemisphere in the HC group.ConclusionsThese neurophysiological findings suggest a subcortical generator of myoclonus in AS.SignificanceMyoclonus in AS has not a cortical origin as previously hypothesised.  相似文献   
186.
187.
188.
目的探究创伤骨科护理管理中疼痛管理的应用价值。方法 82例患者选取于2017年6月-2018年6月,所有患者均来源于本院骨科收治的住院患者,数字表为患者分组原则,常规组41例,疼痛组41例,分别予以常规护理、常规护理+疼痛管理,比较满意度、疼痛评分及平均住院时间。结果疼痛组满意度92.68%比常规组73.17%高,差异具有统计学意义(χ^2=5.513,P <0.05),患者干预后的疼痛评分低于常规组,平均住院时间短于常规组,差异存在统计学意义(P<0.05)。结论疼痛管理用于创伤骨科护理管理中,患者疼痛明显减轻,患者满意度高,缩短了患者的平均住院时间。  相似文献   
189.
190.
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