全文获取类型
收费全文 | 218924篇 |
免费 | 3662篇 |
国内免费 | 114篇 |
专业分类
耳鼻咽喉 | 1781篇 |
儿科学 | 8638篇 |
妇产科学 | 4033篇 |
基础医学 | 21890篇 |
口腔科学 | 3445篇 |
临床医学 | 16467篇 |
内科学 | 39700篇 |
皮肤病学 | 1785篇 |
神经病学 | 20069篇 |
特种医学 | 10214篇 |
外国民族医学 | 2篇 |
外科学 | 35483篇 |
综合类 | 2454篇 |
一般理论 | 17篇 |
预防医学 | 20932篇 |
眼科学 | 4004篇 |
药学 | 12301篇 |
中国医学 | 807篇 |
肿瘤学 | 18678篇 |
出版年
2023年 | 346篇 |
2022年 | 299篇 |
2021年 | 841篇 |
2020年 | 569篇 |
2019年 | 899篇 |
2018年 | 23088篇 |
2017年 | 18171篇 |
2016年 | 20416篇 |
2015年 | 1991篇 |
2014年 | 2151篇 |
2013年 | 2817篇 |
2012年 | 10075篇 |
2011年 | 24417篇 |
2010年 | 20524篇 |
2009年 | 12748篇 |
2008年 | 22351篇 |
2007年 | 24737篇 |
2006年 | 3698篇 |
2005年 | 5349篇 |
2004年 | 6450篇 |
2003年 | 7134篇 |
2002年 | 5179篇 |
2001年 | 1167篇 |
2000年 | 1393篇 |
1999年 | 810篇 |
1998年 | 582篇 |
1997年 | 515篇 |
1996年 | 338篇 |
1995年 | 325篇 |
1994年 | 288篇 |
1993年 | 235篇 |
1992年 | 188篇 |
1991年 | 210篇 |
1990年 | 242篇 |
1989年 | 186篇 |
1988年 | 151篇 |
1987年 | 124篇 |
1986年 | 120篇 |
1985年 | 95篇 |
1984年 | 99篇 |
1983年 | 93篇 |
1982年 | 92篇 |
1981年 | 53篇 |
1980年 | 100篇 |
1979年 | 74篇 |
1978年 | 63篇 |
1977年 | 56篇 |
1974年 | 64篇 |
1938年 | 60篇 |
1932年 | 56篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
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
42.
43.
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
44.
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
45.
46.
47.
Meral T. Ercan Nedim C. M. Gülaldi Işil S. Ünsal Mehmet Aydin İrfan Peksoy Zafer Hasçelik 《Annals of nuclear medicine》1996,10(4):419-423
The present study evaluated99mTc(V) DMSA as an agent for the visualization of inflammatory lesions in comparison to99mTc(HI) DMSA and99mTc-HIG. All three radiopharmaceuticals were prepared with commercial kits.99mTc(V) DMSA was prepared at neutral pH by the addition of first bicarbonate and then pertechnetate to the kit contents. The labeling efficiency was 99% as determined by ITLC. Abscesses were induced by i.m. injection of 50 μl turpentine into the right thighs of 36 Swiss albino mice. Six days later 3.7 MBq of each radiopharmaceutical was i.v. administered to 12 mice. The mice were sacrificed at 1,3,6 and 24 h later. Scintigrams were obtained with a gamma camera. The abscesses were better visualized on scintigrams with99mTc(V) DMSA compared to99mTc(III) DMSA, starting at 1 h. The animals were dissected and the organs were removed, weighed and the radioactivity determined with a gamma counter. The abscess to other tissue ratios were higher with99mTc(V) DMSA than the other radiopharmaceuticals. The max. abscess/muscle ratios were 9.46 ± 3.20 (24 h), 4.19 ± 1.39 (6 h) and 5.98 ± 1.17 (24 h) and max. abscess/blood ratios were 6.22 ± 1.41, 4.09 ± 0.84 and 0.914 ± 0.351 all at 24 h for99mTc(V) DMSA,99mTc(III) DMSA and99mTc-HIG, respectively. Experimental arthritis was produced in 6 New Zealand white rabbits by intra-articular injection of ovalbumin. Four days later 37 MBq of99mTc(V) DMSA and99mTc-HIG were each i.v. administered to 3 rabbits. Scintigrams obtained at 1, 3, 6, and 24 h clearly demonstrated arthritic joints. ROFs over arthritic joints were compared to contralateral normal joints (A/C). The max. A/C ratios were 2.10 ± 0.31 (3 h) and 2.92 ± 0.99 (24 h) for99mTc(V) DMSA and99mTc-HIG, respectively. Our results indicated the feasibility of imaging inflammatory lesions with99mTc(V) DMSA. 相似文献
48.
Fran ois X. Roux M.D. Serge Mordon Ph.D. Catherine Fallet-Bianco M.D. Louis Merienne M.D. Bertrand C. Devaux M.D. Jean-Paul Chodkiewicz M.D. 《Surgical neurology》1990,34(6):402-407
Considering that the 1.32-μm Nd-YAG laser should have physicothermal properties close to those of the CO2 laser, a series of experiments were conducted on rat cortex (N = 51). Three laser wavelengths were compared: CO2 laser (10.6 μm), 1.06-μm Nd-YAG, and 1.32-μm Nd-YAG lasers. For each shot, temperature measurements were recorded with an infrared thermographic videocamera. The digitized signals were figured as thermal profiles and temperature developments. Ninety-five shots were correctly studied and analyzed: CO2, N = 29; 1.06-μm Nd-YAG, N = 20; 1.32-μm Nd-YAG, N = 46. The histological lesions produced by these three lasers were compared on animals killed 24 hours (N = 20), 8 days (N = 20), and 30 days (N = 5) after the laser impacts. For equivalent densities of energy, the depth of cortical necrosis was comparable for the CO2 laser (200–250 μm) and the 1.32-μm Nd-YAG laser (210–260μm) whatever the date of death; the 1.06-μm Nd-YAG laser shots were responsible for much more important damage (400–550μm). Because of its important absorption in water and nervous tissue, the authors consider the 1.32-μm Nd-YAG laser most suitable for neurosurgery, particularly because it is conducted through optic fibers, and therefore is easy to handle during neurosurgical procedures. 相似文献
49.
Irwin L. Flink 《Brain structure & function》2002,205(3):235-244
50.
G Fran?ois C Mycinski L F Garnier B Charbonnier M Marchand L Guillou M Brochier 《Archives des maladies du coeur et des vaisseaux》1987,80(3):367-370
The authors report a case of massive haemolytic anaemia with acute mitral valve regurgitation and left cardiac failure, which occurred one year after surgical reconstruction of the mitral valve for rupture of smaller leaflet chordae. Anaemia, mitral regurgitation and cardiac failure disappeared after mitral valve replacement, using a Carpentier Edwards No. 29 valve. Haemolytic anaemia following mitral valve reconstruction is exceptional. It seems to be due to the suture material lying in a turbulent regurgitation stream when mitral incompetence develops again. 相似文献