全文获取类型
收费全文 | 187502篇 |
免费 | 1598篇 |
国内免费 | 72篇 |
专业分类
耳鼻咽喉 | 1242篇 |
儿科学 | 6784篇 |
妇产科学 | 3257篇 |
基础医学 | 18088篇 |
口腔科学 | 1875篇 |
临床医学 | 13074篇 |
内科学 | 33497篇 |
皮肤病学 | 1069篇 |
神经病学 | 17547篇 |
特种医学 | 9534篇 |
外科学 | 30851篇 |
综合类 | 2343篇 |
一般理论 | 2篇 |
预防医学 | 18334篇 |
眼科学 | 3042篇 |
药学 | 10188篇 |
中国医学 | 641篇 |
肿瘤学 | 17804篇 |
出版年
2023年 | 74篇 |
2022年 | 155篇 |
2021年 | 320篇 |
2020年 | 178篇 |
2019年 | 237篇 |
2018年 | 22142篇 |
2017年 | 17530篇 |
2016年 | 19699篇 |
2015年 | 1157篇 |
2014年 | 1120篇 |
2013年 | 1151篇 |
2012年 | 7627篇 |
2011年 | 21623篇 |
2010年 | 19172篇 |
2009年 | 11799篇 |
2008年 | 20076篇 |
2007年 | 22250篇 |
2006年 | 1123篇 |
2005年 | 2753篇 |
2004年 | 3945篇 |
2003年 | 4930篇 |
2002年 | 3056篇 |
2001年 | 623篇 |
2000年 | 813篇 |
1999年 | 453篇 |
1998年 | 337篇 |
1997年 | 303篇 |
1996年 | 205篇 |
1995年 | 210篇 |
1994年 | 200篇 |
1993年 | 146篇 |
1992年 | 283篇 |
1991年 | 322篇 |
1990年 | 330篇 |
1989年 | 322篇 |
1988年 | 269篇 |
1987年 | 251篇 |
1986年 | 213篇 |
1985年 | 190篇 |
1984年 | 126篇 |
1983年 | 104篇 |
1982年 | 75篇 |
1980年 | 70篇 |
1979年 | 78篇 |
1978年 | 84篇 |
1974年 | 72篇 |
1970年 | 62篇 |
1969年 | 66篇 |
1968年 | 67篇 |
1938年 | 60篇 |
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
31.
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
32.
33.
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
34.
Adriana B Campaner Alessandro Scapinelli Ruy O Machado Roberto E Dos Santos Geni W Beznos Tsutomu Aoki 《Gynecological endocrinology》2006,22(7):395-398
We report a case of a prepubertal girl with juvenile primary hypothyroidism presenting as ovarian cysts and precocious puberty. The 7-year-old female was referred to our clinic because of a pelvic/abdominal mass and vaginal bleeding. Besides these findings, on physical examination we noticed the thyroid gland globally increased and the presence of secondary sexual characteristics. Based upon the clinical profile and investigations, the patient was diagnosed with juvenile primary hypothyroidism due to autoimmune thyroiditis. The cysts and precocious puberty resolved spontaneously after the simple replacement of thyroid hormone. It is important to bear in mind hypothyroidism in cases of girls presenting ovarian cysts and precocious puberty in order to avoid unnecessary surgery on the ovaries. 相似文献
35.
Kanji Takeo Eric Virtudazo Misako Ohkusu Susumu Kawamoto Shoko Ito-Kuwa Sigeji Aoki 《Nippon Ishinkin Gakkai Zasshi》2006,47(4):257-262
In Cryptococcus neoformans the DNA content of cells having tiny buds varied rather widely, depending on growth phases and strains used. Typically, buds of C. neoformans emerged soon after initiation of DNA synthesis in the early exponential phase. However, bud emergence was delayed to G2 during transition to the stationary phase, and in the early stationary phase budding scarcely occurred, although roughly half of the cells completed DNA synthesis. The timing of budding in C. neoformans was shifted to later cell cycle points with progression of the growth phase of the culture. Similarly, a deficit in oxygen was demonstrated to delay the timing of budding, prolong the G2 phase and cause accumulation of cells after DNA synthesis, but before commitment to budding. The C. neoformans homologue of the main cell cycle control gene CDC28/Cdc2 was isolated using degenerate RT-PCR. The full-length coding region was then amplified using primers to target the regions around the start and stop codons. The gene was called CnCdk1 and was found to have high homologies to S. cerevisiae CDC28 and S. pombe cdc2. To determine its function, its ability to rescue S. cerevisiae cdc28-temperature sensitive mutants was tested. S. cerevisiae cdc28-4 and cdc28-1N strains transformed with the pYES2-CnCdk1 construct exhibited growth at the restrictive temperature. Results of the sequence analysis and the ability of CnCdk1 to complement the S. cerevisiae cdc28-ts mutations support its assumed role as the CDC28/cdc2 homologue in C. neoformans. 相似文献
36.
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
37.
38.
39.
CROSSOVER COMPARISON BETWEEN THE DEPRESSOR EFFECTS OF LOW AND HIGH WORK-RATE EXERCISE IN MILD HYPERTENSION 总被引:2,自引:0,他引:2
Eiichiro Tashiro Shin-ichiro Miura Manabu Koga Manabu Sasaguri Munehito Ideishi Masaharu Ikeda Hiroaki Tanaka Munehiro Shindo Kikuo Arakawa 《Clinical and experimental pharmacology & physiology》1993,20(11):689-696
1. The relationship between work-rate and the antihypertensive effect of exercise in hypertensives, and the mechanism of that effect, were investigated by a crossover clinical trial. 2. Ten mild hypertensives were randomly divided into two groups. One group performed low work-rate exercise (LWE) on a cycle ergometer for 10 weeks (blood lactate threshold; ~50% of maximum oxygen consumption [V?O2max]). After a 10 week interval without exercise training, these subjects were then switched to a high work-rate exercise (HWE) regimen (4 mmol/ L of blood lactate; ~75% of V?O2max) for another 10 weeks. In the other group, the order of exercise training was reversed. Since two patients withdrew from the protocol during HWE periods, statistical analysis was performed on the data from the remaining eight patients. There were no order effects observed in any of the data from the two groups. 3. During both LWE and HWE, resting blood pressure (BP) fell significantly after the initiation of exercise therapy (P<0.05). Furthermore, the overall effects of 10 weeks of LWE and HWE on BP were not significantly different. 4. The work-rate at the lactate threshold, which reflects physical fitness, had increased significantly by 16 W (P<0.01) after the LWE period and by 11 W (P<0.01) after the HWE. 5. During the LWE period, changes in haemodynamic and humoral variables were not significant, except for a reduction in plasma norepinephrine at week 10 (P<0.05). In the HWE period, changes in haemodynamic and humoral variables were not significant. 6. Based on these findings, LWE is recommended for mild hypertensives because of its safety. 相似文献
40.
Irwin L. Flink 《Brain structure & function》2002,205(3):235-244