全文获取类型
收费全文 | 9615篇 |
免费 | 613篇 |
国内免费 | 219篇 |
专业分类
耳鼻咽喉 | 207篇 |
儿科学 | 86篇 |
妇产科学 | 51篇 |
基础医学 | 1793篇 |
口腔科学 | 175篇 |
临床医学 | 938篇 |
内科学 | 2326篇 |
皮肤病学 | 370篇 |
神经病学 | 716篇 |
特种医学 | 473篇 |
外科学 | 983篇 |
综合类 | 78篇 |
现状与发展 | 1篇 |
预防医学 | 361篇 |
眼科学 | 121篇 |
药学 | 939篇 |
中国医学 | 171篇 |
肿瘤学 | 658篇 |
出版年
2024年 | 7篇 |
2023年 | 86篇 |
2022年 | 312篇 |
2021年 | 490篇 |
2020年 | 212篇 |
2019年 | 271篇 |
2018年 | 322篇 |
2017年 | 229篇 |
2016年 | 362篇 |
2015年 | 457篇 |
2014年 | 568篇 |
2013年 | 613篇 |
2012年 | 1053篇 |
2011年 | 934篇 |
2010年 | 489篇 |
2009年 | 406篇 |
2008年 | 520篇 |
2007年 | 534篇 |
2006年 | 411篇 |
2005年 | 389篇 |
2004年 | 278篇 |
2003年 | 271篇 |
2002年 | 223篇 |
2001年 | 181篇 |
2000年 | 176篇 |
1999年 | 135篇 |
1998年 | 72篇 |
1997年 | 64篇 |
1996年 | 44篇 |
1995年 | 33篇 |
1994年 | 45篇 |
1993年 | 21篇 |
1992年 | 28篇 |
1991年 | 24篇 |
1990年 | 31篇 |
1989年 | 22篇 |
1988年 | 23篇 |
1987年 | 14篇 |
1986年 | 17篇 |
1985年 | 15篇 |
1984年 | 9篇 |
1983年 | 5篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1979年 | 6篇 |
1978年 | 4篇 |
1977年 | 13篇 |
1976年 | 6篇 |
1973年 | 2篇 |
1970年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
We reported on the ascending reticular activating system (ARAS) finding of a patient in whom severe injury of the cerebral cortex was detected following a hypoxic-ischemic brain injury (HIBI).A 67-year-old female patient who suffered from HIBI induced by cardiac arrest after surgery for lumbar disc herniation underwent cardiopulmonary resuscitation approximately 20 to 30 minutes after cardiac arrest. The patient exhibited impaired alertness, with a Glasgow Coma Scale (GCS) score of 4 (eye opening: 2, best verbal response: 1, and best motor response: 1). Approximately 3 years after onset, she began to whimper sometimes and showed improved consciousness, with a GCS score of 10 (eye opening: 4, best verbal response: 2, and best motor response: 4) and Coma Recovery Scale-Revised score of 9 (auditory function: 1, visual function: 1, motor function: 2, verbal function: 2, communication: 1, and arousal: 2).Results of diffusion tensor tractography for the upper connectivity of the ARAS showed decreased neural connectivity to each cerebral cortex in both hemispheres. The right lower ARAS between the pontine reticular formation and the thalamic intralaminar nuclei (ILN) was thinner compared with the left side.Severe injury of the upper portion of the ARAS between the thalamic ILN and cerebral cortex was demonstrated in a patient with some level of consciousness. 相似文献
122.
123.
Carbon dioxide insufflation during colonoscopy can significantly decrease post‐interventional abdominal discomfort in deeply sedated patients: A prospective,randomized, double‐blinded,controlled trial
下载免费PDF全文
![点击此处可从《Journal of gastroenterology and hepatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
124.
125.
126.
Dae Hee Kim Chan Woo Kim Jang Won Lee Uigeon Kim Soyeon Jung Euna Hwang 《Clinical anatomy (New York, N.Y.)》2019,32(4):471-475
There are various modifications of the transverse rectus abdominis musculocutaneous flap and deep inferior epigastric perforator flap to reduce the morbidity of the donor site or to augment the vascularity of the flap. For microanastomosis of multiple pedicles, multiple recipient vessels or an intervening vein graft should be provided. In addition, alternative perforator‐based flaps used in breast reconstruction have small caliber pedicles. Therefore, small recipient vessels such as internal thoracic artery perforators are more suitable for appropriate microanastomosis. Therefore, it is important to acquaint the distribution and anatomical characteristics of internal thoracic artery perforators. We researched the perforators running in the intercostal spaces under the pectoralis major muscle to provide an overview of the anatomical distribution and characteristics of the perforators in patients who underwent immediate subpectoral implant‐based breast reconstructions. In our study, the major perforators (diameter > 1.5 mm) were easily found 2–7 cm medially between the third and fourth intercostal space and were sparse in the lateral area from the midline of the breast (usually 8–9 cm lateral to the midsternal line) and above the third rib. In each side of the breast, the average number of perforators greater than 1.5 mm was 1.6, and the average number of perforators between 1 mm and 1.5 mm in diameter was 3.2. Our results provide information about perforators in the anterior chest wall related to the breast area. Clin. Anat. 32:471–475, 2019. © 2018 Wiley Periodicals, Inc. 相似文献
127.
The reconstruction of soft tissue defects with a similar type of tissue and minimizing morbidities are important. Herein, we describe our surgical experience using customized reconstruction with a series of modified keystone flaps. We retrospectively reviewed data of 48 consecutive soft tissue reconstructions using modified keystone flaps between March and December 2017. Soft tissue reconstruction was performed and there was no major complication in the follow‐up period. The dimensions of the wound defect ranged from 1 × 1 cm2 to 20 × 18 cm2 with a mean size of 4.7 × 3.5 cm2, while the dimensions of the customized keystone design flap ranged from 2 × 1 cm2 to 23 × 19 cm2 with a mean size of 7.9 × 5.4 cm2. Minor dehiscence in three cases (6%) and partial flap loss in one case (2%) were noticed. Two cases healed spontaneously and other two cases were surgically recovered. Due to its simplicity, reliability, versatility and minimal morbidity, our modified keystone flaps could be excellent surgical options in various soft tissue reconstructions. 相似文献
128.
129.
Sedeek Mohamed Sedeek Hamid Rahmatullah Bin Abd Razak Gerard WW Ee Andrew HC Tan 《Singapore medical journal》2014,55(10):511-516
The glenohumeral joint is inherently unstable because the large humeral head articulates with the small shadow glenoid fossa. Traumatic anterior dislocation of the shoulder is a relatively common athletic injury, and the high frequency of recurrent instability in young athletes after shoulder dislocation is discouraging to both the patient and the treating physician. Management of primary traumatic shoulder dislocation remains controversial. Traditionally, treatment involves initial immobilisation for 4–6 weeks, followed by functional rehabilitation. However, in view of the high recurrence rates associated with this traditional approach, there has been an escalating interest in determining whether immediate surgical intervention can lower the rate of recurrent shoulder dislocation, improving the patient’s quality of life. This review article aims to provide an overview of the nature and pathogenesis of first-time primary anterior shoulder dislocations, the widely accepted management modalities, and the efficacy of primary surgical intervention in first-time primary anterior shoulder dislocations. 相似文献
130.
Yongseok Jang Daniel Owuor Jenora T. Waterman Leon White Boyce Collins Jagannathan Sankar Thomas W. Gilbert Yeoheung Yun 《Materials》2014,7(8):5866-5882
The biodegradable ability of magnesium alloys is an attractive feature for tracheal stents since they can be absorbed by the body through gradual degradation after healing of the airway structure, which can reduce the risk of inflammation caused by long-term implantation and prevent the repetitive surgery for removal of existing stent. In this study, the effects of bicarbonate ion (HCO3−) and mucin in Gamble’s solution on the corrosion behavior of AZ31 magnesium alloy were investigated, using immersion and electrochemical tests to systematically identify the biodegradation kinetics of magnesium alloy under in vitro environment, mimicking the epithelial mucus surfaces in a trachea for development of biodegradable airway stents. Analysis of corrosion products after immersion test was performed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). Electrochemical impedance spectroscopy (EIS) was used to identify the effects of bicarbonate ions and mucin on the corrosion behavior of AZ31 magnesium alloys with the temporal change of corrosion resistance. The results show that the increase of the bicarbonate ions in Gamble’s solution accelerates the dissolution of AZ31 magnesium alloy, while the addition of mucin retards the corrosion. The experimental data in this work is intended to be used as foundational knowledge to predict the corrosion behavior of AZ31 magnesium alloy in the airway environment while providing degradation information for future in vivo studies. 相似文献