全文获取类型
收费全文 | 2055篇 |
免费 | 155篇 |
国内免费 | 9篇 |
专业分类
耳鼻咽喉 | 34篇 |
儿科学 | 174篇 |
妇产科学 | 50篇 |
基础医学 | 363篇 |
口腔科学 | 32篇 |
临床医学 | 121篇 |
内科学 | 372篇 |
皮肤病学 | 28篇 |
神经病学 | 186篇 |
特种医学 | 41篇 |
外科学 | 190篇 |
综合类 | 67篇 |
预防医学 | 141篇 |
眼科学 | 44篇 |
药学 | 142篇 |
中国医学 | 7篇 |
肿瘤学 | 227篇 |
出版年
2023年 | 8篇 |
2022年 | 19篇 |
2021年 | 44篇 |
2020年 | 33篇 |
2019年 | 34篇 |
2018年 | 57篇 |
2017年 | 37篇 |
2016年 | 33篇 |
2015年 | 46篇 |
2014年 | 72篇 |
2013年 | 105篇 |
2012年 | 129篇 |
2011年 | 150篇 |
2010年 | 82篇 |
2009年 | 81篇 |
2008年 | 100篇 |
2007年 | 123篇 |
2006年 | 96篇 |
2005年 | 133篇 |
2004年 | 99篇 |
2003年 | 79篇 |
2002年 | 70篇 |
2001年 | 53篇 |
2000年 | 57篇 |
1999年 | 50篇 |
1998年 | 35篇 |
1997年 | 7篇 |
1996年 | 17篇 |
1995年 | 15篇 |
1994年 | 11篇 |
1993年 | 7篇 |
1992年 | 24篇 |
1991年 | 26篇 |
1990年 | 24篇 |
1989年 | 25篇 |
1988年 | 26篇 |
1987年 | 20篇 |
1986年 | 21篇 |
1985年 | 22篇 |
1984年 | 19篇 |
1983年 | 13篇 |
1981年 | 7篇 |
1980年 | 8篇 |
1979年 | 14篇 |
1978年 | 12篇 |
1977年 | 11篇 |
1976年 | 9篇 |
1974年 | 11篇 |
1972年 | 8篇 |
1970年 | 7篇 |
排序方式: 共有2219条查询结果,搜索用时 31 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.
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
3.
4.
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
5.
Cytomegalovirus Disease in High-Risk Transplant Recipients Despite Ganciclovir or Valganciclovir Prophylaxis 总被引:10,自引:0,他引:10
Enver Akalin Vinita Sehgal Scott Ames Sabera Hossain Lisa Daly Murphy Barbara Jonathan S. Bromberg 《American journal of transplantation》2003,3(6):731-735
The clinical patterns and predictors of cytomegalovirus (CMV) disease in kidney and/or pancreas transplant patients on ganciclovir (1.0 g po t.i.d.) or valganciclovir (450 mg po q.d.) prophylaxis were studied. This is a retrospective analysis of 129 transplant recipients. Median follow up was 12 months (range, 6-18 months). The overall incidence of CMV disease at 1-year post-transplant was 14% (4% tissue-invasive, 10% noninvasive). Seventeen of 18 patients were diagnosed with CMV after completion of 3 months' prophylaxis (median 8 weeks, range, 2-28 weeks). Induction treatment with thymoglobulin, and Donor +/Recipient - CMV status were the strongest predictors for the development of CMV disease. Cytomegalovirus incidence was not different between patients treated with ganciclovir or valganciclovir (15 vs. 17%, respectively). Valganciclovir (450 mg q.d.) is as effective as oral ganciclovir in CMV prophylaxis. High-risk individuals might require higher doses or longer duration of valganciclovir treatment. 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