全文获取类型
收费全文 | 185261篇 |
免费 | 1515篇 |
国内免费 | 24篇 |
专业分类
耳鼻咽喉 | 1237篇 |
儿科学 | 6918篇 |
妇产科学 | 3275篇 |
基础医学 | 18620篇 |
口腔科学 | 1746篇 |
临床医学 | 13269篇 |
内科学 | 32369篇 |
皮肤病学 | 818篇 |
神经病学 | 17483篇 |
特种医学 | 9307篇 |
外科学 | 29970篇 |
综合类 | 2402篇 |
一般理论 | 3篇 |
预防医学 | 18917篇 |
眼科学 | 2848篇 |
药学 | 10085篇 |
中国医学 | 654篇 |
肿瘤学 | 16879篇 |
出版年
2021年 | 153篇 |
2020年 | 100篇 |
2019年 | 145篇 |
2018年 | 22063篇 |
2017年 | 17461篇 |
2016年 | 19649篇 |
2015年 | 1090篇 |
2014年 | 1043篇 |
2013年 | 1112篇 |
2012年 | 7529篇 |
2011年 | 21572篇 |
2010年 | 19131篇 |
2009年 | 11814篇 |
2008年 | 19999篇 |
2007年 | 22208篇 |
2006年 | 1084篇 |
2005年 | 2726篇 |
2004年 | 3875篇 |
2003年 | 4798篇 |
2002年 | 2957篇 |
2001年 | 363篇 |
2000年 | 469篇 |
1999年 | 270篇 |
1998年 | 325篇 |
1997年 | 290篇 |
1996年 | 170篇 |
1995年 | 194篇 |
1994年 | 165篇 |
1993年 | 121篇 |
1992年 | 94篇 |
1991年 | 151篇 |
1990年 | 177篇 |
1989年 | 124篇 |
1988年 | 100篇 |
1987年 | 81篇 |
1985年 | 81篇 |
1984年 | 74篇 |
1980年 | 76篇 |
1974年 | 75篇 |
1938年 | 92篇 |
1933年 | 115篇 |
1932年 | 132篇 |
1931年 | 89篇 |
1930年 | 113篇 |
1929年 | 73篇 |
1928年 | 92篇 |
1927年 | 86篇 |
1926年 | 98篇 |
1925年 | 87篇 |
1924年 | 87篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
25.
C Edward Hoffler Kurt D Hankenson Joshua D Miller Sukhinderdeep K Bilkhu Steven A Goldstein 《Journal of orthopaedic research》2006,24(8):1687-1698
To understand in situ behavior of osteocytes, we characterized a model of osteocytes in their native bone matrix and demonstrated real-time biologic activity of osteocytes while bending the bone matrix. Using 43 male Sprague-Dawley rats, dumbbell-shaped explants were harvested from stainless steel femoral implants after 6-12 weeks and incubated in culture medium or fixed. Sixteen specimens were used to determine bone volume density (BV/TV), volumetric bone mineral density (BMD) and histology for different implantation periods. Osteocyte viability was evaluated by L-lactate dehydrogenase (LDH) activity in 12 cultured explants. Confocal microscopy was used to assess tracer diffusion in three explants and changes in osteocyte pH of a mechanically loaded explant. From 6 to 12 weeks, explant BV/TV and volumetric BMD trended up 92.5% and 101%, respectively. They were significantly and highly correlated. Tissues were uniformly intramembranous and all bone cell types were present. Explants maintained LDH activity through culture day 8. Diffusion at 200 microM was limited to 1,209 Da. Explants appeared capable of reproducing complex bone biology. This model may be useful in understanding osteocyte mechanotransduction in the context of a physiologically relevant bone matrix. 相似文献
26.
Susanne Ramsauer 《Zeitschrift für Psychodrama und Soziometrie》2007,6(2):293-302
Anliegen dieses Artikels ist, die besondere Qualit?t und Chance von Psychodramatischer Supervision zu beschreiben, und gleichzeitig
die Kompatibilit?t und fruchtbare Erg?nzung des Moreno’schen Ansatzes innerhalb des Formats Supervision innerhalb der Sozialen
Arbeit auf zuzeigen. Dies wird anhand von 2 ausgew?hlten Praxisbeispielen dargestellt. Die Handlungskompetenz von Supervisandinnen
und Supervisanden kann durch einfache psychodramatische Interventionen erweitert werden. Handlungshemmung wird überwunden,
Spontaneit?t und Kreativit?t kommen ins Laufen und er?ffnen Perspektiven. 相似文献
27.
28.
Debra L. Roter Richard M. Frankel Judith A. Hall David Sluyter 《Journal of general internal medicine》2006,21(1):28-34
Relationship-centered care reflects both knowing and feeling: the knowledge that physician and patient bring from their respective domains of expertise, and the physician’s and patient’s experience, expression, and perception of emotions during the medical encounter. These processes are conveyed and reciprocated in the care process through verbal and nonverbal communication. We suggest that the emotional context of care is especially related to nonverbal communication and that emotion-related communication skills, including sending and receiving nonverbal messages and emotional self-awareness, are critical elements of high-quality care. Although nonverbal behavior has received far less study than other care processes, the current review argues that it holds significance for the therapeutic relationship and influences important outcomes including satisfaction, adherence, and clinical outcomes of care. 相似文献
29.
Using complexity theory to build interventions that improve health care delivery in primary care
下载免费PDF全文
![点击此处可从《Journal of general internal medicine》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Litaker David Tomolo Anne Liberatore Vincenzo Stange Kurt C. Aron David 《Journal of general internal medicine》2006,21(2):S30-S34
Previous observational research confirms abundant variation in primary care practice. While variation is sometimes viewed as problematic, its presence may also be highly informative in uncovering ways to enhance health care delivery when it represents unique adaptations to the values and needs of people within the practice and interactions with the local community and health care system. We describe a theoretical perspective for use in developing interventions to improve care that acknowledges the uniqueness of primary care practices and encourages flexibility in the form of intervention implementation, while maintaining fidelity to its essential functions. 相似文献
30.
杨娅 Thomas Bartel Loredana Latina Guido Caspari 王新房 Raimund Erbel 《华中科技大学学报(医学英德文版)》2002,22(2):158-163
Coronary flow reserve (CFR) has been used toassess coronary microcirculation and epicardial coro-nary stenoses[1— 3 ] . CFR is defined as the ratio ofcoronary flow under maximal coronary vasodilatationto coronary flow under resting conditions[4 ] .Whenthe cross- sectional area of epicardial coronary arteriesis constant,coronary flow velocity (CFV) ratios areequal to volume flow ratios.The most common method used clinically formeasuring CFVR is intracoronary Doppler flow(ICD) analysis re… 相似文献