全文获取类型
收费全文 | 1007篇 |
免费 | 85篇 |
国内免费 | 14篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 49篇 |
妇产科学 | 15篇 |
基础医学 | 155篇 |
口腔科学 | 17篇 |
临床医学 | 92篇 |
内科学 | 136篇 |
皮肤病学 | 8篇 |
神经病学 | 43篇 |
特种医学 | 122篇 |
外科学 | 107篇 |
综合类 | 21篇 |
预防医学 | 95篇 |
眼科学 | 33篇 |
药学 | 70篇 |
肿瘤学 | 130篇 |
出版年
2022年 | 8篇 |
2021年 | 11篇 |
2020年 | 9篇 |
2019年 | 13篇 |
2018年 | 16篇 |
2017年 | 11篇 |
2016年 | 11篇 |
2015年 | 23篇 |
2014年 | 14篇 |
2013年 | 29篇 |
2012年 | 53篇 |
2011年 | 45篇 |
2010年 | 32篇 |
2009年 | 20篇 |
2008年 | 32篇 |
2007年 | 51篇 |
2006年 | 27篇 |
2005年 | 27篇 |
2004年 | 23篇 |
2003年 | 16篇 |
2002年 | 24篇 |
2001年 | 17篇 |
2000年 | 35篇 |
1999年 | 29篇 |
1998年 | 29篇 |
1997年 | 41篇 |
1996年 | 31篇 |
1995年 | 27篇 |
1994年 | 18篇 |
1993年 | 12篇 |
1992年 | 17篇 |
1991年 | 17篇 |
1990年 | 18篇 |
1989年 | 22篇 |
1988年 | 31篇 |
1987年 | 20篇 |
1986年 | 22篇 |
1985年 | 19篇 |
1984年 | 10篇 |
1983年 | 18篇 |
1982年 | 11篇 |
1981年 | 11篇 |
1980年 | 10篇 |
1979年 | 13篇 |
1978年 | 20篇 |
1977年 | 18篇 |
1976年 | 13篇 |
1974年 | 8篇 |
1969年 | 12篇 |
1967年 | 10篇 |
排序方式: 共有1106条查询结果,搜索用时 15 毫秒
101.
102.
A double-blind comparison of some analgesic and gastrointestinal effects of nalbuphine and pethidine was performed in 28 women undergoing laparoscopic sterilisation. The opioid was given as an initial loading dose prior to the induction of general anaesthesia and further doses were given on demand in the postoperative period to achieve and maintain adequate pain relief. Gastric emptying in the immediate postoperative period was also assessed in each patient by measuring the rate of absorption of orally administered paracetamol. Nalbuphine was equally effective as pethidine as a postoperative analgesic, but may have been a less effective supplement to anaesthesia in the doses used in this study. Gastric emptying was profoundly depressed in all patients irrespective of which analgesic was used. 相似文献
103.
A device for manual compression and palpation during supine fluoroscopy has been designed. It enables effective use of the physiologic grasping and lever force potentials of the hand and wrist. The device permits optimal fluoroscopic palpation and compression techniques and prevents direct exposure to the lead-gloved hand. 相似文献
104.
Transnasal Butorphanol in the Treatment of Acute Migraine 总被引:3,自引:0,他引:3
Marvin Jay Hoffert MD FACPM James R. Couch MD PhD Seymour Diamond MD Arthur H. Elkind MD Jerome Goldstein MD Nicholas J. Kohlerman III MD PhD Joel R. Saper MD Seymour Solomon MD 《Headache》1995,35(2):65-69
We studied transnasal butorphanol (Stadol NS·) for pain relief during acute migraine in a multicenter, randomized, double-blind, placebo controlled trial using ambulatory patients at 10 geographically diverse headache centers. Patients were volunteer adults diagnosed with migraine with or without aura by International Headache Society criteria. One hundred fifty-seven patients completed the study. We treated the pain of one headache in each patient with either transnasal butorphanol (n=107) or transnasal placebo (n=50). Pain relief, pain intensity, nausea, vomiting, and effect on function were measured periodically. Adverse experiences were documented. Global assessments were made at follow-up. With butorphanol, migraine pain was reduced from moderate, severe, or incapacitating to slight or absent for 35 patients (33%) within 30 minutes, for 50 patients (47%) within 1 hour, and for 76 (71%) within 6 hours, compared to 2 (4%) 8 (16%) and 15 (30%) respectively for placebo. Side effects were prominent, though confounded by the migraine. The most common side effects, compared to placebo, were dizziness (58% vs 4%), nausea and/or vomiting (38% vs 18%), and drowsiness (29% vs 0%). We conclude that transnasal butorphanol is a useful analgesic for the pain of acute migraine. Its prominent side effects and low self reinforcement rate may limit its usefulness in some patients, while increasing its appropriateness for others. 相似文献
105.
106.
Isolated headache as the presenting clinical manifestation of intracranial tumors: a prospective study 总被引:1,自引:0,他引:1
A Vázquez-Barquero FJ Ibáñez S Herrera JM Izquierdo J Berciano J Pascual 《Cephalalgia : an international journal of headache》1994,14(4):270-271
Isolated headache as the presenting clinical manifestation of intracranial tumors: a prospective study. Cephalalgia 1994;1'4:270-1. Oslo. ISSN 0333-1024We prospectively studied over two years the incidence of headache as the initial and isolated clinical manifestation of adult patients suffering from intracranial tumors ( n = 183). Fifteen patients (8%) exhibited headache as their first and isolated clinical manifestation. Age, sex, neoplasm localization, or pathological diagnosis did not correlate with the presence of headache. Posterior fossa location and hydrocephalus, though not reaching statistical significance, were more frequent in patients who presented with headache as the first symptom. At the moment of diagnosis, 59 (31%) of the patients admitted to headache, though only I out of the 15 patients starting as headache still had this symptom as the only manifestation. From our experience in adults, isolated headache for longer than 10 weeks will only exceptionally be secondary to an intracranial neoplasm. 相似文献
107.
108.
109.
个性化颅骨成形术中植入材料类型与颅骨缺损面积的关系 总被引:2,自引:0,他引:2
目的:分析个性化颅骨成形术中,植入材料类型与颅骨缺损面积的关系。
方法:选择解放军总医院第二附属医院神经外科2002-03/2005-01和河北省三河市医院神经外科2003-09/2005-04收治的资料齐全的计算机辅助设计颅骨成形术患者75例,分为嵌入性材料(骨水泥、硅橡胶)组40例,根据颅骨缺损面积又分为大面积(≥36cm2)组17例和小面积(〈36cm2)组23例;覆盖性材料(钛网)组35例,大面积组14例和小面积组21例。采用头颅CT超薄扫描(层厚1.5mm),三维重建,模拟缺损颅骨补片,应用激光快速成形技术,制作缺损颅骨及颅骨补片模型,患者认可后,根据患者的病情应用硅橡胶、骨水泥、钛网作为植入材料,进行手术植入。术后1周观察并发症:头痛、积液、松动。
结果:75例患者的补片与颅骨完整适配,塑形满意,术中无需修整,平均手术时间45min,83%(63/75)患者感到基本或完全恢复了原有容貌。手术并发症:嵌入性材料组头痛4例,积液10例,松动2例,共16例,其中大面积组13例,小面积组3例;覆盖性材料组头痛1例,积液2例,松动0例,共3例次,其中大面积组2例,小面积组1例。应用精确概率分析,两材料组之间手术并发症差异显著,两材料组颅骨缺损面积之间手术并发症差异显著,嵌入性材料大面积组与覆盖性材料大面积组之间手术并发症差异显著,嵌入性材料小面积组与覆盖性材料小面积组之间手术并发症无显著性差异。
结论:个性化设计的颅骨修补材料,能够最大限度的恢复患者外形,缩短手术时间,大面积的颅骨缺损应用钛网修补,小面积的应用钛网和嵌入性材料修补。根据患者颅骨缺损面积,选择不同植入材料,可以提高手术疗效,减少术后并发症。 相似文献
110.