全文获取类型
收费全文 | 4338057篇 |
免费 | 335740篇 |
国内免费 | 14284篇 |
专业分类
耳鼻咽喉 | 60479篇 |
儿科学 | 139171篇 |
妇产科学 | 113032篇 |
基础医学 | 665913篇 |
口腔科学 | 117095篇 |
临床医学 | 392386篇 |
内科学 | 783138篇 |
皮肤病学 | 108947篇 |
神经病学 | 361955篇 |
特种医学 | 169321篇 |
外国民族医学 | 529篇 |
外科学 | 664569篇 |
综合类 | 120193篇 |
现状与发展 | 23篇 |
一般理论 | 2603篇 |
预防医学 | 359368篇 |
眼科学 | 101983篇 |
药学 | 303666篇 |
26篇 | |
中国医学 | 11612篇 |
肿瘤学 | 212072篇 |
出版年
2021年 | 56770篇 |
2020年 | 36305篇 |
2019年 | 59342篇 |
2018年 | 75646篇 |
2017年 | 57856篇 |
2016年 | 64495篇 |
2015年 | 77408篇 |
2014年 | 111889篇 |
2013年 | 177962篇 |
2012年 | 128122篇 |
2011年 | 134068篇 |
2010年 | 128437篇 |
2009年 | 129172篇 |
2008年 | 119637篇 |
2007年 | 127952篇 |
2006年 | 136307篇 |
2005年 | 131576篇 |
2004年 | 131355篇 |
2003年 | 121797篇 |
2002年 | 111080篇 |
2001年 | 152961篇 |
2000年 | 147753篇 |
1999年 | 137052篇 |
1998年 | 70594篇 |
1997年 | 66519篇 |
1996年 | 64699篇 |
1995年 | 59944篇 |
1994年 | 54052篇 |
1993年 | 50229篇 |
1992年 | 97502篇 |
1991年 | 94105篇 |
1990年 | 90538篇 |
1989年 | 88230篇 |
1988年 | 81282篇 |
1987年 | 79747篇 |
1986年 | 75021篇 |
1985年 | 74083篇 |
1984年 | 62498篇 |
1983年 | 56075篇 |
1982年 | 46327篇 |
1981年 | 43354篇 |
1980年 | 40756篇 |
1979年 | 54031篇 |
1978年 | 44630篇 |
1977年 | 39366篇 |
1976年 | 36670篇 |
1975年 | 36985篇 |
1974年 | 40175篇 |
1973年 | 38313篇 |
1972年 | 35951篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
101.
Irmak Karaca Suzan Güven Yılmaz Melis Palamar Halil Ateş 《Ocular immunology and inflammation》2020,28(6):947-951
ABSTRACT
Purpose
To investigate the effect of 1% tropicamide on anterior chamber aqueous flare (ACAF) measurements acquired with laser flare meter in patients with pseudoexfoliation. 相似文献102.
AbstractPurpose: In the context of assistive technology, mobility takes the meaning of “moving safely, gracefully, and comfortably”.The aim of this article is to provide a system which will be a convenient means of navigation for the Visually Impaired people, in the public transport system.Method: A blind regular commuter who travels by public transport facility finds difficulty in identifying the vehicle that is nearing the stop. Hence, a real-time system that dynamically identifies the nearing vehicle and informs the commuters is necessary. This paper proposes such a system namely the “Vehicle Board Recognition System” (VBRS). Computer Vision techniques such as segmentation, object recognition, text detection and optical character recognition are utilized to build the system, which will detect, analyze, derive and communicate the information to the passengers.Results: Thanks to the rapid development in technology, there are several navigation systems both hand held and wearable, available to help visually impaired (VI) people move comfortably both indoor and outdoor. Many blind people are not comfortable in using these devices or they are not affordable for them. Thus the proposed system gives them the comfort of navigation.Conclusion: This system can be installed in the bus stop to assist the Visually Impaired, from externally rather than their hand held or wearable assistive devices.
- Implications for rehabilitation
This proposed system will help the visually impaired to
ensure secure navigation
be independent of the others
develop self confidence.
overcome the training, affordability of wearable/ handheld devices.
103.
Christopher R. LaFever 《Death Studies》2020,44(12):819-822
104.
105.
106.
Jeroen M. van de Pol Jurjen G. Geljon Svetlana V. Belitser Geert W.J. Frederix Anke M. Hövels Marcel L. Bouvy 《Research in social & administrative pharmacy》2019,15(1):70-76
Introduction
The nature of community pharmacy is changing, shifting from the preparation and distribution of medicines to the provision of cognitive pharmaceutical services (CPS); however, often the provision of traditional services leaves little time for innovative services. This study investigated the time community pharmacists spend on the tasks and activities of daily practice and to what extent they are able to implement CPS-related services in daily practice.Methods
Self-reporting work sampling was used to register the activities of community pharmacists. A smartphone application, designed specifically for this purpose, alerted participants to register their current activity five times per working day for 6 weeks. Participants also completed an online survey about baseline characteristics.Results
Ninety-one Dutch community pharmacists provided work-sampling data (7848 registered activities). Overall, 51.5% of their time was spent on professional activities, 35.4% on semi-professional activities, and 13.1% on non-professional activities. The proportion of time devoted to CPS decreased during the workweek, whereas the time spent on traditional task increased.Discussion and conclusion
This study shows it is feasible to collect work-sampling data using smartphone technology. Community pharmacists spent almost half of their time on semi-professional and non-professional activities, activities that could be delegated to other staff members. In practice, the transition to CPS is hampered by competing traditional tasks, which prevents community pharmacists from profiling themselves as pharmaceutical experts in daily practice. 相似文献107.
108.
109.
110.
J. Rodríguez-Carrio A. Martínez-Zapico I. Cabezas-Rodríguez L. Benavente Á.I. Pérez-Álvarez P. López J.B. Cannata-Andía M. Naves-Díaz A. Suárez 《Nutrition, metabolism, and cardiovascular diseases : NMCD》2019,29(2):135-143