全文获取类型
收费全文 | 5079篇 |
免费 | 304篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 78篇 |
儿科学 | 128篇 |
妇产科学 | 71篇 |
基础医学 | 522篇 |
口腔科学 | 180篇 |
临床医学 | 520篇 |
内科学 | 968篇 |
皮肤病学 | 60篇 |
神经病学 | 323篇 |
特种医学 | 235篇 |
外科学 | 958篇 |
综合类 | 129篇 |
现状与发展 | 1篇 |
一般理论 | 2篇 |
预防医学 | 340篇 |
眼科学 | 154篇 |
药学 | 471篇 |
中国医学 | 76篇 |
肿瘤学 | 200篇 |
出版年
2023年 | 72篇 |
2022年 | 149篇 |
2021年 | 260篇 |
2020年 | 171篇 |
2019年 | 210篇 |
2018年 | 251篇 |
2017年 | 155篇 |
2016年 | 164篇 |
2015年 | 156篇 |
2014年 | 203篇 |
2013年 | 277篇 |
2012年 | 408篇 |
2011年 | 397篇 |
2010年 | 206篇 |
2009年 | 173篇 |
2008年 | 320篇 |
2007年 | 316篇 |
2006年 | 255篇 |
2005年 | 180篇 |
2004年 | 194篇 |
2003年 | 167篇 |
2002年 | 149篇 |
2001年 | 61篇 |
2000年 | 55篇 |
1999年 | 53篇 |
1998年 | 38篇 |
1997年 | 25篇 |
1996年 | 15篇 |
1995年 | 25篇 |
1994年 | 16篇 |
1993年 | 21篇 |
1992年 | 27篇 |
1991年 | 21篇 |
1990年 | 23篇 |
1989年 | 28篇 |
1988年 | 24篇 |
1987年 | 29篇 |
1986年 | 16篇 |
1985年 | 10篇 |
1984年 | 10篇 |
1983年 | 10篇 |
1982年 | 8篇 |
1981年 | 7篇 |
1980年 | 11篇 |
1979年 | 7篇 |
1976年 | 6篇 |
1974年 | 9篇 |
1973年 | 3篇 |
1969年 | 3篇 |
1968年 | 3篇 |
排序方式: 共有5416条查询结果,搜索用时 15 毫秒
51.
52.
Huda AlbasriKaren A. Eley Nadeem R. Saeed 《The British journal of oral & maxillofacial surgery》2011,49(2):154-156
First bite syndrome is the classic symptomatology of pain in the parotid region that occurs in response to the first bite of a meal. We report two cases of this syndrome in patients after operations to the parapharyngeal space. 相似文献
53.
BackgroundThe Gldiescope video laryngoscope (GVL) as a recent intubating device has gained much popularity in difficult intubation over the last decade. It can be used as a substitute to flexible fiber optic bronchoscope (FOB) in intubating challenges. The object of this study is to compare the utility of GVL and FOB for intubating time, attempts, effects on hemodynamics, adverse effects, patient satisfaction and post intubation neurological outcome during awake intubation in traumatic cervical spine injury.MethodsFifty patients undergoing post traumatic cervical spine fixation under general anesthesia were randomly allocated to two groups in a prospective, controlled non-blinded study. All patients were premedicated with glycopyrrolate 0.2 mg iv and midazolam 1 mg iv that be repeated up to 0.05 mg/kg followed with a bolus dose of remifentanil 1.5 μg/kg then a continuous remifentanil infusion of 0.15 μg/kg/min for 3 min before procedure. Each patient underwent a wake endotracheal intubation with either GVL (G group) or FOB (F group) with manual in line stabilization (MILS). Intubating time, intubating attempts, hear rate (HR), mean arterial pressure (MAP), oxygen desaturation (SO2 < 90%), sore throat, patient satisfaction and postintubation neurological outcome were recorded.ResultsIntubating time was significantly lower in G group compared with F group (26 ± 5 versus 72 ± 11 respectively), while the percentage of the first successful intubating attempt was insignificantly higher in G group (88%) than in F group (72%). Both HR and MAP were significantly increased only in F group during intubation in comparison with the basal line values. Both devices were safe for post neurological outcome. No significant differences of adverse effects or patient satisfaction were recorded between groups.ConclusionThe GVL is a safe surrogate for FOB during awake intubation for post traumatic cervical spine fixation. 相似文献
54.
55.
56.
Arif Zafar Gemma Ingham Jainudeen K.A. Jameel 《International journal of surgery case reports》2013,4(5):528-530
INTRODUCTIONBouveret's syndrome is a rare variant of gallstone ileus and describes gastric outlet obstruction secondary to an impacted stone in the duodenum. Its presentation is vague and clinical diagnosis is often difficult resulting in a delay in diagnosis.PRESENTATION OF CASEWe report a patient who presented initially with non-specific symptoms and subsequently with features in keeping with acute pancreatitis, but eventually was found to have Bouveret's syndrome.DISCUSSIONDifferent treatment strategies are discussed. Although endoscopic treatment combined with many newer modalities like lithotripsy have been tried, surgery remains the definitive management in the vast majority of cases.CONCLUSIONBouveret's syndrome is a rare condition, can also present as pancreatitis and often difficult to diagnose initially, but with appropriate treatment has a good outcome. 相似文献
57.
Mohammed E Grawish Mahmoud A Saeed Nessma Sultan Ben A Scheven 《World Journal of Meta-Analysis》2021,9(2):176-192
Dental pulp stem cells (DPSCs) have emerged as a promising tool with great potential for use in tissue regeneration and engineering. Some of the main advantages of these cells are their multifaceted differentiation capacity, along with their high proliferation rate, a relative simplicity of extraction and culture that enables obtaining patient-specific cell lines for their use in autologous cell therapy. PubMed, Scopus and Google Scholar databases were searched for relevant articles related to the use of DPSCs in regeneration of dentin-pulp complex (DPC), periodontal tissues, salivary gland and craniomaxillofacial bone defects. Few studies were found regarding the use of DPSCs for regeneration of DPC. Scaffold-based combined with DPSCs isolated from healthy pulps was the strategy used for DPC regeneration. Studies involved subcutaneous implantation of scaffolds loaded with DPSCs pretreated with odontogenic media, or performed on human tooth root model as a root slice. Most of the studies were related to periodontal tissue regeneration which mainly utilized DPSCs/secretome. For periodontal tissues, DPSCs or their secretome were isolated from healthy or inflamed pulps and they were used either for preclinical or clinical studies. Regarding salivary gland regeneration, the submandibular gland was the only model used for the preclinical studies and DPSCs or their secretome were isolated only from healthy pulps and they were used in preclinical studies. Likewise, DPSCs have been studied for craniomaxillofacial bone defects in the form of mandibular, calvarial and craniofacial bone defects where DPSCs were isolated only from healthy pulps for preclinical and clinical studies. From the previous results, we can conclude that DPSCs is promising candidate for dental and oral tissue regeneration. 相似文献
58.
59.
Almalky Hussain A. Alqahtani Saeed S. 《Journal of autism and developmental disorders》2022,52(9):3949-3957
Journal of Autism and Developmental Disorders - This study examines partnerships between schools and businesses that are intended to foster training and employment opportunities for secondary... 相似文献
60.