全文获取类型
收费全文 | 2982篇 |
免费 | 132篇 |
国内免费 | 26篇 |
专业分类
耳鼻咽喉 | 543篇 |
儿科学 | 44篇 |
妇产科学 | 11篇 |
基础医学 | 198篇 |
口腔科学 | 223篇 |
临床医学 | 459篇 |
内科学 | 72篇 |
皮肤病学 | 12篇 |
神经病学 | 56篇 |
特种医学 | 180篇 |
外科学 | 600篇 |
综合类 | 235篇 |
预防医学 | 77篇 |
眼科学 | 6篇 |
药学 | 68篇 |
1篇 | |
中国医学 | 148篇 |
肿瘤学 | 207篇 |
出版年
2024年 | 6篇 |
2023年 | 50篇 |
2022年 | 89篇 |
2021年 | 114篇 |
2020年 | 85篇 |
2019年 | 164篇 |
2018年 | 187篇 |
2017年 | 121篇 |
2016年 | 110篇 |
2015年 | 74篇 |
2014年 | 242篇 |
2013年 | 173篇 |
2012年 | 170篇 |
2011年 | 184篇 |
2010年 | 140篇 |
2009年 | 147篇 |
2008年 | 152篇 |
2007年 | 138篇 |
2006年 | 127篇 |
2005年 | 92篇 |
2004年 | 67篇 |
2003年 | 56篇 |
2002年 | 44篇 |
2001年 | 45篇 |
2000年 | 39篇 |
1999年 | 34篇 |
1998年 | 34篇 |
1997年 | 25篇 |
1996年 | 16篇 |
1995年 | 10篇 |
1994年 | 22篇 |
1993年 | 16篇 |
1992年 | 15篇 |
1991年 | 19篇 |
1990年 | 6篇 |
1989年 | 8篇 |
1988年 | 11篇 |
1987年 | 6篇 |
1985年 | 14篇 |
1984年 | 24篇 |
1983年 | 12篇 |
1982年 | 9篇 |
1981年 | 7篇 |
1980年 | 7篇 |
1979年 | 13篇 |
1977年 | 4篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 2篇 |
排序方式: 共有3140条查询结果,搜索用时 15 毫秒
81.
目的:观察足针配合项针治疗重型脑卒中的临床疗效。方法:足针疗法治疗重型脑卒中,有吞咽困难或失语患者配合项针治疗。结果:治疗后总有效率为95%。结论:足针配合项针治疗脑卒中疗效显著。 相似文献
82.
83.
《Best Practice & Research: Clinical Rheumatology》2016,30(6):981-993
Despite the increased interest in economic evaluations, there are difficulties in applying the results of such studies in practice. Therefore, the “Research Agenda for Health Economic Evaluation” (RAHEE) project was initiated, which aimed to improve the use of health economic evidence in practice for the 10 highest burden conditions in the European Union (including low back pain [LBP] and neck pain [NP]). This was done by undertaking literature mapping and convening an Expert Panel meeting, during which the literature mapping results were discussed and evidence gaps and methodological constraints were identified. The current paper is a part of the RAHEE project and aimed to identify economic evidence gaps and methodological constraints in the LBP and NP literature, in particular.The literature mapping revealed that economic evidence was unavailable for various commonly used LBP and NP treatments (e.g., injections, traction, and discography). Even if economic evidence was available, many treatments were only evaluated in a single study or studies for the same intervention were highly heterogeneous in terms of their patient population, control condition, follow-up duration, setting, and/or economic perspective. Up until now, this has prevented economic evaluation results from being statistically pooled in the LBP and NP literature, and strong conclusions about the cost-effectiveness of LBP and NP treatments can therefore not be made. The Expert Panel identified the need for further high-quality economic evaluations, especially on surgery versus conservative care and competing treatment options for chronic LBP. Handling of uncertainty and reporting quality were considered the most important methodological challenges. 相似文献
84.
《The International journal of neuroscience》2012,122(7):855-868
The aim of this article was to describe an apparatus, called multipurpose neck robot (MUPRO), designed to record both the forces exerted at head level and the head rotations in the horizontal plane in the behaving monkey. It consists of a mechanical device, comprising a cardan joint, a potentiometer, an electromagnetic brake, and four flexion load cells, plus an oleodynamic system allowing head rotation in the horizontal plane between - 20° These components are assembled on a column bolted to the primate s chair. An electrical device provides DC power for the potentiometer and the brake. The apparatus enables us to measure both the force fields and the head movements during training sessions and electrophysiological investigations. 相似文献
85.
《Injury》2017,48(6):1155-1158
ObjectivesTo determine if early surgery before 12 h confers a survival or length of stay benefit for patients with neck of femur (NOF) fractures.DesignRetrospective review of prospectively collected data.SettingDistrict general hospital.Patients1913 patients aged over 60 admitted with a fractured NOF who underwent surgery between 2011 and 2015. Mean age was 83.9 years. 73.7% were female.InterventionPatients had surgery for fractured NOF with data collected on demographics, mortality and length of stay.Main outcome measurementsData collected included gender, age, ASA grade, fracture anatomy, surgery, time to surgery, days spent in acute hospital and rehabilitation settings and 30-day mortality. Statistical analysis was used to identify independent predictors of mortality and length of stay.Results30-day mortality was 6.1% and the mean hospitalisation time was 13 ± 11.3 days for the acute hospital and 20.2 ± 17.2 days for the trust. Operations were performed at a mean of 23.8 ± 14.8 h after presentation. Age, gender, ASA grade and type of fracture were independent predictors of either mortality or length of stay. Timing of surgery had an association with mortality but this only reached statistical significance at 24 h.In line with previous studies we analysed time to surgery in 12 h blocks. We also used logistic regression, recognizing time as a continuous variable, which revealed that every hour of delay to surgery increased the mortality risk by 1.8%.ConclusionsWhile every hour of delay increased mortality risk, the association with mortality only became statistically significant when delaying over 24 h. This supports a pragmatic approach, with surgery as soon as medically possible without a race to theatre.Level of evidenceLevel III retrospective cohort study. 相似文献
86.
87.
88.
89.
Roya Eshaghi Moghadam Leila Rahnama Noureddin Karimi Mohsen Amiri Mahsa Rahnama 《Journal of bodywork and movement therapies》2018,22(3):643-647
Background
As one of the most common work-related musculoskeletal disorders and postural deviations, forward head posture (FHP), is considered to lead to muscle imbalance.Objectives
The aim of this study is to investigate the bilateral cross-sectional area (CSA) of the deep neck flexor muscles at rest and during five stages of the craniocervical flexion (CCF) test in individuals with FHP and the controls with normal head posture.Methods
Eighteen students with FHP and 18 controls with normal head posture, all females aged 18–35 years, participated in this study. Participants were categorized into two groups based on their craniovertebral angle. The CSA of the deep neck flexors was measured using ultrasonography while participants lay supine on the table with a pressure biofeedback unit placed under their necks in order to let the examiner measure the CSA of the muscles during rest and five stages of the CCF test including 22, 24, 26, 28, and 30 mmHg of the pressure biofeedback unit.Results
A significant effect of contraction level was observed in both groups, indicating significant increases of the CSA of the deep neck flexors during contraction (F = 64.37, P < 0.001). No significant difference was evident for the CSA of the deep neck flexors between the groups, although the increase in the CSA of the deep neck flexors was up to 28 mmHg in the normal head posture group compared to 26 mmHg in the FHP group.Conclusions
The results of the present study showed no significant difference between the performance of the deep neck flexors during the CCF test in FHP and normal head posture individuals, which challenge the common belief of the deep neck flexors weakness in individuals sustaining FHP. 相似文献90.
Gerson Moreira Damasceno Arthur Sá Ferreira Leandro Alberto Calazans Nogueira Felipe José Jandre Reis Rodrigo Wagner Lara Ney Meziat-Filho 《Journal of bodywork and movement therapies》2018,22(4):963-967