全文获取类型
收费全文 | 26372篇 |
免费 | 2082篇 |
国内免费 | 21篇 |
专业分类
耳鼻咽喉 | 207篇 |
儿科学 | 669篇 |
妇产科学 | 625篇 |
基础医学 | 3570篇 |
口腔科学 | 609篇 |
临床医学 | 2841篇 |
内科学 | 5727篇 |
皮肤病学 | 452篇 |
神经病学 | 2361篇 |
特种医学 | 1056篇 |
外科学 | 3468篇 |
综合类 | 169篇 |
一般理论 | 21篇 |
预防医学 | 2569篇 |
眼科学 | 341篇 |
药学 | 1919篇 |
中国医学 | 39篇 |
肿瘤学 | 1832篇 |
出版年
2024年 | 42篇 |
2023年 | 348篇 |
2022年 | 104篇 |
2021年 | 364篇 |
2020年 | 465篇 |
2019年 | 499篇 |
2018年 | 950篇 |
2017年 | 921篇 |
2016年 | 872篇 |
2015年 | 702篇 |
2014年 | 729篇 |
2013年 | 1488篇 |
2012年 | 1988篇 |
2011年 | 2143篇 |
2010年 | 927篇 |
2009年 | 533篇 |
2008年 | 1775篇 |
2007年 | 1789篇 |
2006年 | 1653篇 |
2005年 | 1504篇 |
2004年 | 1357篇 |
2003年 | 1296篇 |
2002年 | 1288篇 |
2001年 | 780篇 |
2000年 | 941篇 |
1999年 | 482篇 |
1998年 | 161篇 |
1997年 | 160篇 |
1996年 | 114篇 |
1995年 | 129篇 |
1994年 | 112篇 |
1993年 | 110篇 |
1992年 | 90篇 |
1991年 | 103篇 |
1990年 | 80篇 |
1989年 | 95篇 |
1988年 | 115篇 |
1987年 | 105篇 |
1986年 | 97篇 |
1985年 | 143篇 |
1984年 | 147篇 |
1983年 | 101篇 |
1982年 | 104篇 |
1981年 | 83篇 |
1980年 | 78篇 |
1979年 | 70篇 |
1978年 | 55篇 |
1977年 | 52篇 |
1976年 | 36篇 |
1975年 | 30篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
73.
74.
75.
Modified multiplex PCR method for detection of pyrogenic exotoxin genes in staphylococcal isolates 总被引:10,自引:0,他引:10 下载免费PDF全文
A modified multiplex PCR method for detection of nine Staphylococcus aureus enterotoxin genes (sea, seb, sec, sed, see, seg, seh, sei, and sej) and one form of immunoreactive toxic shock syndrome toxin based on a previously published method (S. R. Monday and G. A. Bohach, J. Clin. Microbiol. 37:3411-3414, 1999) has been developed. The modified PCR protocol seems robust and gives reliable results. 相似文献
76.
77.
S. Gundersen S. Kvinnsland S. Lundgren O. Klepp E. Lund O. Børmer H. Høst 《Breast cancer research and treatment》1990,17(1):45-50
Summary One-hundred and seventy patients with estrogen receptor positive (10 pmol/g protein) advanced breast cancer have been treated in a prospective randomized study either with continuous tamoxifen 30 mg × 1 daily (TAM), or with TAM 30 mg × 1 daily for 8 weeks alternating with medroxyprogesterone acetate 500 mg × 2 daily for 8 weeks (TAM/HD-MPA). The response rate was 62% in the group treated with cyclic TAM/HD-MPA versus 41% in the TAM alone group (p = 0.02). There was no significant difference in duration of remissions or survival. 相似文献
78.
Adrian Montesano Stephen Madigan Kevser Çakmak Ottar Ness Stein Roger Brønseth 《Journal of clinical psychology》2023,79(6):1521-1536
This article outlines a new supervision practice of narrative therapy-informed reflecting team-based relational interviewing for a high-conflict stuck case of a separated middle-aged couple. The article demonstrates the supervision method consisting in five parts. First, the supervisor interviews the couples' relationship while the team watches from behind the one-way mirror. Second, the team responds to the interview while the couple and the supervisor witness their conversation. The couple is then invited to respond back to the team. Furthermore, there is a meta-conversation about the supervision in collaboration with the couple. The intervention ends with therapeutic letter writing to the relationship. The couple showed a meaningful shift in their positioning towards a more relational awareness and found valuable ways for continuing their therapy. The theoretical elements of the approach underpinning practice to tackle high conflict are considered through the illustration of the case. 相似文献
79.
Madsen F Søjbjerg JO Sneppen O 《Journal of shoulder and elbow surgery / American Shoulder and Elbow Surgeons ... [et al.]》1994,3(1):17-23
Twenty-three consecutive patients with rheumatoid arthritis who had 26 Pritchord Mark II elbow prostheses were followed prospectively with a mean follow-up of 75 months (range 52 to 101 months). Two patients with three elbow prostheses have died, leaving 21 patients with 23 elbow prostheses for review. At the latest follow-up all the nonrevised elbows had achieved good or excellent results concerning pain relief and elbow motion. According to the data analyzed by a survivorship function-a Kaplan-Meier curve-the early results were promising with 92% of the prostheses surviving the first 5 years; however, only 43% of the prostheses have survived 8 years. Seven prostheses have been revised; the reasons for revision include one infection, one humeral fracture, one loosening of the humeral component, and four disconnections of the hinge. The number with disconnection of the hinge is increasing. Of 16 prostheses still not revised, the x-ray film reveals migration of the pin axle in six. Radiographic signs of component loosening or migration of the axle are not reflected in pain, function, or total score of the elbow. 相似文献
80.
Preben Jakobsen Bente Søresen Lars Bastholt Mansoor Raza Mirza Susanne B. Gjedde Henning T. Mouridsen Carsten Rose 《Cancer chemotherapy and pharmacology》1994,35(1):45-52
A high-pressure liquid chromatographic method for determination of the bisdioxopiperazine derivative ADR-529 (ICRF-187), a compound proven effective in protection against anthracycline-induced cardiotoxicity, has been developed. The limit of quantitation was 5 ng/ml using a narrow-bore 5-m silica column and UV detection. The method was used for determination of pharmacokinetic profiles of ADR-529 after a 3-weekly i.v. administration of different doses of ADR-529 (600–1000 mg/m2) together with different doses of epirubicin (E, 60–100 mg/m2), fixed-dose cyclophosphamide (C, 600 mg/m2), fixed-dose 5-fluorouracil (F, 600 mg/m2), and daily administration of tamoxifen (T, 30 mg; CEF-T) in the treatment of patients with metastatic breast cancer. Pharmacokinetic parameters for epirubicin were also determined. The aim of the study was to determine (1) whether the pharmacokinetics of ADR-529 as part of a combination with CEF-T changes with increasing doses of ADR-529 and increasing doses of epirubicin and (2) whether the pharmacokinetics of epirubicin in the same combinations is altered with the administration of increasing doses of ADR-529. A total of 82 patients were included. A crossover study including 16 of the patients showed no significant difference in epirubicin pharmacokinetic parameters when epirubicin was given with or without concomitant administration of ADR-529. Apart from minor changes in the distributional half-lives, the pharmacokinetic parameters of epirubicin were not altered with increasing doses of ADR-529, nor were the pharmacokinetic parameters of ADR-529 itself. Escalating doses of epirubicin did not significantly alter the pharmacokinetic parameters of ADR-529 with the exception of a 30% increase in the terminal half-life and a decrease in total body clearance when the epirubicin dose was raised from 60 to 100 mg/m2. We conclude that concomitant administration of ADR-529 does not alter the distribution and elimination of epirubicin in doses suitable for preventing the anthracycline-induced cardiotoxicity. 相似文献