全文获取类型
收费全文 | 1479篇 |
免费 | 90篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 17篇 |
儿科学 | 81篇 |
妇产科学 | 19篇 |
基础医学 | 129篇 |
口腔科学 | 55篇 |
临床医学 | 86篇 |
内科学 | 445篇 |
皮肤病学 | 5篇 |
神经病学 | 83篇 |
特种医学 | 82篇 |
外科学 | 299篇 |
综合类 | 18篇 |
一般理论 | 1篇 |
预防医学 | 36篇 |
眼科学 | 78篇 |
药学 | 90篇 |
中国医学 | 3篇 |
肿瘤学 | 44篇 |
出版年
2023年 | 28篇 |
2022年 | 10篇 |
2021年 | 73篇 |
2020年 | 43篇 |
2019年 | 62篇 |
2018年 | 89篇 |
2017年 | 38篇 |
2016年 | 37篇 |
2015年 | 56篇 |
2014年 | 85篇 |
2013年 | 60篇 |
2012年 | 91篇 |
2011年 | 111篇 |
2010年 | 63篇 |
2009年 | 53篇 |
2008年 | 83篇 |
2007年 | 93篇 |
2006年 | 65篇 |
2005年 | 63篇 |
2004年 | 50篇 |
2003年 | 42篇 |
2002年 | 36篇 |
2001年 | 15篇 |
2000年 | 13篇 |
1999年 | 16篇 |
1998年 | 8篇 |
1996年 | 5篇 |
1995年 | 4篇 |
1992年 | 11篇 |
1991年 | 20篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 12篇 |
1987年 | 8篇 |
1986年 | 7篇 |
1985年 | 9篇 |
1984年 | 6篇 |
1983年 | 5篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1976年 | 6篇 |
1975年 | 4篇 |
1974年 | 6篇 |
1973年 | 4篇 |
1972年 | 4篇 |
1971年 | 6篇 |
1968年 | 4篇 |
1967年 | 5篇 |
1927年 | 3篇 |
1926年 | 3篇 |
排序方式: 共有1571条查询结果,搜索用时 500 毫秒
1.
2.
3.
4.
Shirzad Houshian Charlotte Buch G thgen Niels Wisbech Pedersen S ren Harving 《Acta orthopaedica》2004,75(3):249-251
We report our experience with elastic stable intramedullary titanium nailing (ESIN) of femoral shaft fractures in children. From 1998 to 2001, we treated 31 children (20 boys), median age 6 (4-11) years, with ESIN for 29 closed and 2 grade I open femoral shaft fractures. We reviewed 30 children clinically after median 1.5 (1-3) years. Their median hospital stay was 6 (2-20) days. All fractures were radiographically united at a median of 7 (5-9) weeks. The nails were removed in 29 children after a median of 22 (6-38) weeks postoperatively. At follow-up, we found a leg-length discrepancy up to 1 cm in 6 children and 10 degrees of internal rotational deformity in 1 child. No angular deformity had occurred. Elastic stable intramedullary nailing seems to be a safe method for the treatment of femoral shaft fractures in children between 4 and 11 years of age. 相似文献
5.
Akshay Pratap Devendra Kumar Gupta Chandra Shekhar Agrawal Rakesh Kumar Pandit Shailesh Adhikary Anand Kumar Awadhesh Tiwari Satyendra Narayan Singh 《International journal of urology》2007,14(3):198-202
OBJECTIVES: We analyzed the methods and outcomes of urethroplasty in men with complex urethral disruptions. METHODS: The medical records of 40 men with complex urethral disruptions were analyzed. Surgical methods were individualized according to stricture location, severity and length of the stricture, bladder neck characteristics and presence of complicating factors. Patients were divided into four groups based on the above characteristics. RESULTS: End-to-end urethroplasty performed in six patients with short bulbar strictures (<3 cm) was successful in all. Elaborated perineal repair was performed in 10 patients with intermediate (3-6 cm) strictures with or without complicating factors. Elaborated perineal repair with urethral substitution was performed in nine patients with long segment stricture (>6 cm). Abdominal transpubic repair was successfully applied to patients with rectourethral fistula or lacerated bladder neck. Success rate of anastomotic urethroplasty was 95% while over all success rate was 85%. CONCLUSION: Guidelines for urethral reconstruction of complex urethral disruptions are predicated on stricture length, location, bladder neck characteristics and associated complicating factors. End-to-end urethroplasty with stricture excision is highly reliable for short strictures for which previous operative repair have failed. Elaborated perineal repair is extremely versatile for intermediate and longer strictures with associated complicating factors. Abdominal transpubic urethroplasty is effective for patients with rectourethral fistula or lacerated bladder neck. 相似文献
6.
Pharmaceutical Research - 相似文献
7.
Summary Clinicians have been using implants made by titanium or delrin with varying results. In this study dividable implants, bone growth chambers (BGC), of titanium and delrin were inserted into the rabbit tibia. The ingrowth of hard tissue into a canal in the implant was evaluated after 3 weeks by microradiography and numerically determined by computer analysis. Results showed that bone ingrowth into titanium implants was significantly larger than into delrin implants (P < 0.005). The possible reasons for this are discussed.This study was supported by grants from the Swedish Medical Research Council (B 84-12P-6475-02) and B 84-12X-6533-02), King Gustaf V Jubilee Foundation, Trygg-Hansa Research Fund, the Gothenburg Medical Society, and the Greta and Einar Askers Foundation. 相似文献
8.
C B Ijsselmuiden M H Steinberg G N Padayachee B D Schoub S A Strauss E Buch J C Davies C de Beer J S Gear H S Hurwitz 《Suid-Afrikaanse tydskrif vir geneeskunde》1988,73(8):461-464
In this, the second of a three-part series of articles in which we propose steps towards a comprehensive strategy for the control of HIV infection, we consider controversies relating to screening for HIV, the indications for and desirability of mandatory testing of certain groups at risk, and the place of voluntary testing in the control of HIV transmission and infection. Key recommendations are that mandatory testing of donors of blood and other vital tissues, patients on haemodialysis and haemodialysis unit staff is justified, and that children put up for adoption may require testing. We make further recommendations regarding HIV testing as a prerequisite for life insurance and recommend that voluntary testing be offered, supported by adequate pre- and post-test counselling. We consider that all health care workers should accept as their moral obligation the care and management of HIV-infected individuals, and that they should be adequately educated and skilled in such work. These recommendations were reached largely by consensus, although there were occasions when individual authors condoned recommendations with which they did not personally agree. 相似文献
9.
Gropp E Shanabrough M Borok E Xu AW Janoschek R Buch T Plum L Balthasar N Hampel B Waisman A Barsh GS Horvath TL Brüning JC 《Nature neuroscience》2005,8(10):1289-1291
Multiple hormones controlling energy homeostasis regulate the expression of neuropeptide Y (NPY) and agouti-related peptide (AgRP) in the arcuate nucleus of the hypothalamus. Nevertheless, inactivation of the genes encoding NPY and/or AgRP has no impact on food intake in mice. Here we demonstrate that induced selective ablation of AgRP-expressing neurons in adult mice results in acute reduction of feeding, demonstrating direct evidence for a critical role of these neurons in the regulation of energy homeostasis. 相似文献
10.
Stübner S Schön T Padberg F Teipel SJ Schwarz MJ Haslinger A Buch K Dukoff R Lasser R Müller N Sunderland T Rapoport SI Möller HJ Hampel H 《Neuroscience letters》1999,259(3):145-148
Interleukin-6 (IL-6) is hypothesized to play an important role in the interaction between immune mechanisms and the central nervous system. We investigated whether cerebrospinal fluid (CSF) concentrations of interleukin-6 (IL-6), the soluble IL-6 receptor (sIL-6R) and the soluble form of the signal transducing and affinity converting receptor gp130 (sgp130) are altered in geriatric patients with major depression (MD). In 20 geriatric patients with MD and 20 age-matched healthy control subjects CSF concentrations of the three components of the sIL-6R complex were analyzed by enzyme-linked immunosorbent assays (ELISA). All patients except one were treated with psychotropic drugs. We found statistically significant decreased CSF concentrations of IL-6 (P<0.001) and of the sIL-6R (P<0.001) of patients with MD. Levels of sgp130 showed no statistically significant difference between patients and controls. 相似文献