全文获取类型
收费全文 | 6506篇 |
免费 | 373篇 |
国内免费 | 15篇 |
专业分类
耳鼻咽喉 | 104篇 |
儿科学 | 209篇 |
妇产科学 | 64篇 |
基础医学 | 646篇 |
口腔科学 | 95篇 |
临床医学 | 539篇 |
内科学 | 1474篇 |
皮肤病学 | 89篇 |
神经病学 | 488篇 |
特种医学 | 311篇 |
外科学 | 1146篇 |
综合类 | 98篇 |
一般理论 | 4篇 |
预防医学 | 260篇 |
眼科学 | 264篇 |
药学 | 523篇 |
中国医学 | 23篇 |
肿瘤学 | 557篇 |
出版年
2023年 | 40篇 |
2022年 | 112篇 |
2021年 | 246篇 |
2020年 | 122篇 |
2019年 | 209篇 |
2018年 | 227篇 |
2017年 | 176篇 |
2016年 | 203篇 |
2015年 | 188篇 |
2014年 | 314篇 |
2013年 | 368篇 |
2012年 | 550篇 |
2011年 | 609篇 |
2010年 | 315篇 |
2009年 | 291篇 |
2008年 | 399篇 |
2007年 | 434篇 |
2006年 | 373篇 |
2005年 | 342篇 |
2004年 | 301篇 |
2003年 | 326篇 |
2002年 | 227篇 |
2001年 | 67篇 |
2000年 | 45篇 |
1999年 | 50篇 |
1998年 | 46篇 |
1997年 | 35篇 |
1996年 | 25篇 |
1995年 | 24篇 |
1994年 | 22篇 |
1993年 | 16篇 |
1992年 | 26篇 |
1991年 | 21篇 |
1990年 | 39篇 |
1989年 | 28篇 |
1988年 | 5篇 |
1987年 | 12篇 |
1986年 | 9篇 |
1985年 | 5篇 |
1984年 | 5篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1978年 | 3篇 |
1977年 | 5篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1970年 | 3篇 |
1969年 | 4篇 |
1968年 | 2篇 |
排序方式: 共有6894条查询结果,搜索用时 15 毫秒
71.
72.
Dhivya Bhoopathy Bhaskaran Ravi Latha T. S. Uma C. Sreekumar V. Leela 《Acta parasitologica / Witold Stefański Institute of Parasitology, Warszawa, Poland》2014,59(1):153-157
Control of brown dog tick, Rhipicephalus sanguineus was attempted by utilizing sustained release preparations of synthetic analogues of assembly pheromones. The assembly pheromone, in defined ratio, was encapsulated using poly-?-caprolactone by water-in-oil-in-water double emulsion solvent evaporation technique. In the in vitro bioassay, percent mortality with test microspheres was 95.6, 64 and 44 among the unfed larvae, unfed nymph and unfed adults respectively, 24 hours post-exposure. Field trials were carried out to evaluate the efficacy of microspheres in luring and killing environmental stages of R. sanguineus in dog houses/kennels. Engorged and unfed stages in the environment were found adhered and dead on the specially designed lure. 相似文献
73.
74.
75.
Kuldip D. Upadhyay Narsinh M. Dodia Rupesh C. Khunt Ravi S. Chaniara Anamik K. Shah 《Chemical biology & drug design》2019,94(3):1647-1655
A series of pyrano[3,2 c]quinoline was evaluated for its in vivo efficacy as TNF‐α inhibitor using LPS, phosphodiesterase (PDE)‐4, and CIA assays in different mice/rat models. The synthesis was performed using one‐pot multicomponent condensation between 2,4‐dihydroxy‐1‐methylquinoline, malononitrile, and diverse un(substituted) aromatic aldehydes. In vivo efficacy of the title compounds was evaluated using LPS assay in BALB/c mice, PDE4 inhibition in ketamine–xylazine‐induced anesthetize SD rats, and CIA assay was performed in DBA/1J mice as per the standard literature protocols. The outcome of the study revealed that compound 4v was found to be most promising candidate of the series. It was efficacious with 48.8 ± 13.0% inhibition of TNF‐α release at 100 mg/kg p.o., in the LPS assay in Balb/c mice model. It was effective in PDE4 assay in ketamine–xylazine‐induced anesthetize SD rats with duration of 38.3 ± 4.5 min for reversal of anesthetic effect and also showed significant inhibition of PDE4 in salbutamol treated U937 cell assay. It was also abolished TNF‐α induced phosphorylation and degradation of IκBα. Ultimately, its effect on CIA‐related bone and cartilage damage was found statistically similar to Enbrel. 相似文献
76.
77.
78.
79.
80.
Anuhya Vusirikala David Ensor Ajay K Asokan Alvin JX Lee Ravi Ray Dimitrios Tsekes John Edwin 《World journal of orthopedics》2021,12(1):24-34
BACKGROUNDThe coronavirus disease 2019 (COVID-19) pandemic has resulted in seismic changes in healthcare delivery. As a result of this, hospital footfall required to be reduced due to increased risk of transmission of infection. To ensure patients can safely access healthcare, we introduced orthopaedic clinic telephone consultations in our busy district general hospital.AIMTo investigate patients’ and clinicians’ perspective of telephone consultations during COVID-19, and whether this method of consultation could be a viable option in the post- pandemic future. METHODSThis is a single centre, prospective study conducted in a busy National Health Service district general hospital. In May 2020, 100 non- consecutive adult patients were contacted by independent investigators within 48 h of their orthopaedic clinic telephone consultation to complete a telephone satisfaction questionnaire. The questions assessed satisfaction regarding various aspects of the consultation including overall satisfaction and willingness to use this approach long term. Satisfaction and perspective of 25 clinicians conducting these telephone consultations was also assessed via an online survey tool.RESULTS93% of patients were overall satisfied with telephone consultations and 79% were willing to continue this method of consultation post- pandemic. Patients found telephone consultations to reduce personal cost and inconvenience associated with attending a hospital appointment. 72% of clinicians reported overall satisfaction with this service and 80% agreed that telephone consultations should be used in the future. The majority found it less laborious in time and administration in comparison to face to face consultations. Patients and clinicians expressed their desire for video consultations as a method of further improving their experience with remote consultations.CONCLUSIONOur study has shown that telephone consultations are a safe and rapid method of adaptation to the COVID-19 pandemic, achieving the aim of reducing hospital footfall. This method of consultation has resulted in immense clinician and patient satisfaction. Our findings suggest that this tool has benefits in post pandemic healthcare delivery. It has also highlighted that telephone consultations can act as a steppingstone to the introduction of the more complex platform of video consulting. 相似文献