全文获取类型
收费全文 | 190729篇 |
免费 | 1801篇 |
国内免费 | 114篇 |
专业分类
耳鼻咽喉 | 1305篇 |
儿科学 | 7046篇 |
妇产科学 | 3206篇 |
基础医学 | 18419篇 |
口腔科学 | 1924篇 |
临床医学 | 13368篇 |
内科学 | 34964篇 |
皮肤病学 | 1264篇 |
神经病学 | 17584篇 |
特种医学 | 9664篇 |
外科学 | 31248篇 |
综合类 | 2367篇 |
一般理论 | 2篇 |
预防医学 | 18288篇 |
眼科学 | 2917篇 |
药学 | 10522篇 |
中国医学 | 653篇 |
肿瘤学 | 17903篇 |
出版年
2023年 | 92篇 |
2022年 | 167篇 |
2021年 | 342篇 |
2020年 | 194篇 |
2019年 | 319篇 |
2018年 | 22189篇 |
2017年 | 17601篇 |
2016年 | 19809篇 |
2015年 | 1235篇 |
2014年 | 1274篇 |
2013年 | 1310篇 |
2012年 | 7826篇 |
2011年 | 21850篇 |
2010年 | 19353篇 |
2009年 | 11921篇 |
2008年 | 20173篇 |
2007年 | 22418篇 |
2006年 | 1321篇 |
2005年 | 3019篇 |
2004年 | 4186篇 |
2003年 | 5079篇 |
2002年 | 3188篇 |
2001年 | 713篇 |
2000年 | 826篇 |
1999年 | 548篇 |
1998年 | 399篇 |
1997年 | 362篇 |
1996年 | 265篇 |
1995年 | 221篇 |
1994年 | 198篇 |
1993年 | 147篇 |
1992年 | 275篇 |
1991年 | 333篇 |
1990年 | 373篇 |
1989年 | 328篇 |
1988年 | 290篇 |
1987年 | 260篇 |
1986年 | 227篇 |
1985年 | 239篇 |
1984年 | 172篇 |
1983年 | 129篇 |
1982年 | 106篇 |
1981年 | 71篇 |
1980年 | 85篇 |
1979年 | 121篇 |
1978年 | 75篇 |
1977年 | 64篇 |
1970年 | 69篇 |
1969年 | 68篇 |
1968年 | 68篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
32.
33.
Kenichi Okubo Masashi Kobayashi Hiromasa Morikawa Eiichi Hayatsu 《The Japanese Journal of Thoracic and Cardiovascular Surgery》2006,54(7):268-272
Objective: Induction chemoradiotherapy followed by anatomical resection is a current therapeutic strategy for non-small-cell lung cancer
with mediastinal node involvement. Dense peritracheal fibrosis and sclerosis after chemoradiotherapy cause difficult mediastinal
node dissection. We evaluated a novel technique to make the mediastinal node dissection easier after induction therapy. Methods: At the end of mediastinoscopic node biopsy for staging of lung cancer, cotton-type collagen was inserted anterior and lateral
to the trachea in patients with pathologically confirmed mediastinal node involve-ment (n=45). The induction therapy consisted
of concurrent use of platinum-based chemotherapy and hyperfractionated radiotherapy. After the chemoradiotherapy all patients
underwent a pulmonary resection with complete mediastinal node dissection 7–12 weeks after the collagen insertion. Surgical
findings of the mediastinum and the time for node dissection were compared with those without collagen insertion at mediastinoscopy
after chemoradiotherapy (n=5). Results: All five patients without collagen insertion showed sclerotic and fibrotic change of mediastinal nodes with severe adhesion
to the trachea. In 42 of 45 patients with collagen insertion (93.3%) the collagen remained unabsorbed and separated the mediastinal
nodes from the trachea. Mediastinal node dissection was easily accomplished by removing mediastinal tissues lateral and anterior
to the collagen. The rate of mediastinal node separation was significantly higher with collagen insertion than without (p<
0.0001). The times for node dissection in patients with and without collagen insertion showed no significant difference. Conclusion: Cotton-type collagen insertion at staging mediastinoscopy for lung cancer separates the mediastinal nodes from the trachea
and makes the node dissection easier after induction chemoradiotherapy. 相似文献
34.
Kensaku Maeda Kenichi Yasunari Eisuke F Sato Junichi Yoshikawa Masayasu Inoue 《Hypertension research》2003,26(12):999-1006
The involvement of oxidative stress in polymorphonuclear leukocytes (PMN) in the pathogenesis of hypertension remains to be elucidated. We analyzed the generation of reactive oxygen species (ROS) by the circulating and peritoneally infiltrating PMN from spontaneously hypertensive rats (SHR) and Wistar Kyoto rats (WKY). Flow cytometric analysis revealed that ROS generation by PMN from SHR was higher than that from WKY before (at 6 weeks of age) and after (at 16 weeks of age) the onset of hypertension. In vivo, ROS generation by PMN from SHR, but not that by PMN from WKY, was significantly suppressed by 10-week treatment with 50 mg/kg/day carvedilol, and this treatment did not affect blood pressure. Western blotting analysis revealed that protein kinase C alpha (PKCalpha), but not PKCbetaI or betaII, was activated more strongly in PMN from SHR than in PMN from WKY. Furthermore, expression of p47phox of nicotinamide adenine dinucleotide phosphate oxidase, but not of p67phox, in PMN from SHR was higher than that in PMN from WKY. These results suggest that ROS generation by PMN is principally enhanced in SHR through activation of PKCalpha and p47phox. 相似文献
35.
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
36.
37.
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
38.
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
39.
40.