全文获取类型
收费全文 | 2255篇 |
免费 | 158篇 |
国内免费 | 12篇 |
专业分类
耳鼻咽喉 | 32篇 |
儿科学 | 170篇 |
妇产科学 | 33篇 |
基础医学 | 335篇 |
口腔科学 | 46篇 |
临床医学 | 127篇 |
内科学 | 464篇 |
皮肤病学 | 32篇 |
神经病学 | 219篇 |
特种医学 | 48篇 |
外科学 | 251篇 |
综合类 | 79篇 |
预防医学 | 128篇 |
眼科学 | 46篇 |
药学 | 158篇 |
中国医学 | 7篇 |
肿瘤学 | 250篇 |
出版年
2023年 | 9篇 |
2022年 | 15篇 |
2021年 | 49篇 |
2020年 | 30篇 |
2019年 | 37篇 |
2018年 | 73篇 |
2017年 | 47篇 |
2016年 | 47篇 |
2015年 | 55篇 |
2014年 | 81篇 |
2013年 | 121篇 |
2012年 | 145篇 |
2011年 | 150篇 |
2010年 | 95篇 |
2009年 | 91篇 |
2008年 | 127篇 |
2007年 | 151篇 |
2006年 | 103篇 |
2005年 | 131篇 |
2004年 | 101篇 |
2003年 | 85篇 |
2002年 | 78篇 |
2001年 | 53篇 |
2000年 | 59篇 |
1999年 | 53篇 |
1998年 | 36篇 |
1996年 | 19篇 |
1995年 | 15篇 |
1994年 | 11篇 |
1993年 | 8篇 |
1992年 | 27篇 |
1991年 | 27篇 |
1990年 | 25篇 |
1989年 | 25篇 |
1988年 | 26篇 |
1987年 | 19篇 |
1986年 | 22篇 |
1985年 | 23篇 |
1984年 | 18篇 |
1983年 | 13篇 |
1981年 | 7篇 |
1980年 | 7篇 |
1979年 | 16篇 |
1978年 | 13篇 |
1977年 | 12篇 |
1976年 | 9篇 |
1974年 | 11篇 |
1973年 | 7篇 |
1972年 | 7篇 |
1970年 | 7篇 |
排序方式: 共有2425条查询结果,搜索用时 156 毫秒
1.
Urvashi Razdan R. M. Raizada V. N. Chaturvedi 《Indian journal of otolaryngology and head and neck surgery》2004,56(1):20-22
Objective To assess the efficacy of conservative modalities in the management of epistaxis.
Study design Prospective case studies.
Setting Rural medical college hospital.
Patients Indoor and outdoor patients with epistaxis.
lntervention Conservative(non surgical) management techniques in epistaxis.
Results Chemical cauterization was successful in 72.07% cases, anterior nasal packing in 84.5% and posterior nasal packing in 95.6%
cases.
Conclusion Out of 300 cases of epistaxis included in the study (except for one case that required internal maxillary artery ligation).
all cases were treated successfully with conservative treatment alongwith treating the underlying pathology causing epistaxis. 相似文献
2.
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
3.
Ruma Pahwa Nita Khurana K Uma Chaturvedi Anoop Raj 《Indian journal of otolaryngology and head and neck surgery》2003,55(3):193-194
Neurilemmoma is usually soimry, benign tumour derived from schwan cells of the Sheaths of peripheral cranial or autonomie
nerves. In thehead and neck region it occurs most commonly in association with acoustic nerve within the skuil and is rely
fottnd in the oral cavity (1,2). We report here two cases of the iongue diagnosed on histopathohgy. 相似文献
4.
5.
P Chaturvedi U C Chaturvedi R Mukherjee 《International journal of experimental pathology》1992,73(6):773-782
The helper T cells (TH) generated in dengue type 2 virus (DV) infection of mice produce a soluble helper cytokine (HF) which enhances the clonal expansion of DV-specific IgM antibody plaque forming cells (PFC). The present study was undertaken to investigate the mechanism of transmission of the helper signal from TH and HF to B cells. It was observed that TH could transmit the helper signal to B cells by direct cell to cell contact, but HF could not do so without the presence of live macrophages (M phi). HF was adsorbed by both heat killed and live M phi but the former could not transmit it to B cells. Both the polypeptide chains of HF bind to M phi. HF remains on the surface of M phi and can be retrieved completely by contact with B cells for 40 min. The helper signal from TH or HF-adsorbed M phi could not be transmitted to B cells when they were separated from each other by a cell impermeable membrane. The enhancement of PFC count is greater when the signal is transmitted by HF-adsorbed M phi as compared to that by TH alone. Thus, even with lower frequency of TH a significant number of B cells may be triggered with the help of HF and M phi. The findings thus show that the DV-specific helper signal could be transmitted only by a close physical contact of the plasma membranes of the signal presenting cells (TH or HF-adsorbed M phi) and B cells. 相似文献
6.
7.
8.
Different types of leprosy vaccines are currently used in field trials in India. The rationale behind their use, the parameters for determining their efficacy, their merits and demerits are discussed and the future prospects are highlighted. 相似文献
9.
10.
A. J. Varghese V. N. Chaturvedi 《Indian journal of otolaryngology and head and neck surgery》2007,59(3):233-236
Objective To find out the usability and advantage with regard to the advent of new and more costly antibiotics. In the treatment of
Peritonsillar abscess the demonstration of, both aerobic and anaerobic organisms has raised the question of possible need
to treat with antibiotics effective against anaerobes.
It was in this very context that this study was planned to find out if we still have an economically and easily available
antibiotic to treat Peritonsillar abscess.
Conclusions Injectable penicillin is the drug of choice in PTA as GABHS and staphylococcus aureus coagulase positive are the most common
organism associated with this condition. Even where penicillin resistant organism is present, effective management of the
abscess is possible if it is drained well and weak hydrogen peroxide gargles are used along with injectable penicillin. 相似文献