全文获取类型
收费全文 | 1118篇 |
免费 | 65篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 11篇 |
儿科学 | 31篇 |
妇产科学 | 27篇 |
基础医学 | 100篇 |
口腔科学 | 11篇 |
临床医学 | 116篇 |
内科学 | 333篇 |
皮肤病学 | 5篇 |
神经病学 | 73篇 |
特种医学 | 24篇 |
外科学 | 309篇 |
综合类 | 3篇 |
预防医学 | 21篇 |
眼科学 | 26篇 |
药学 | 53篇 |
中国医学 | 5篇 |
肿瘤学 | 40篇 |
出版年
2023年 | 5篇 |
2022年 | 10篇 |
2021年 | 29篇 |
2020年 | 12篇 |
2019年 | 24篇 |
2018年 | 27篇 |
2017年 | 14篇 |
2016年 | 22篇 |
2015年 | 22篇 |
2014年 | 28篇 |
2013年 | 29篇 |
2012年 | 66篇 |
2011年 | 68篇 |
2010年 | 43篇 |
2009年 | 48篇 |
2008年 | 60篇 |
2007年 | 65篇 |
2006年 | 59篇 |
2005年 | 63篇 |
2004年 | 51篇 |
2003年 | 47篇 |
2002年 | 32篇 |
2001年 | 18篇 |
2000年 | 26篇 |
1999年 | 17篇 |
1998年 | 11篇 |
1997年 | 12篇 |
1996年 | 7篇 |
1995年 | 10篇 |
1994年 | 7篇 |
1993年 | 3篇 |
1992年 | 23篇 |
1991年 | 25篇 |
1990年 | 37篇 |
1989年 | 21篇 |
1988年 | 12篇 |
1987年 | 12篇 |
1986年 | 19篇 |
1985年 | 13篇 |
1984年 | 14篇 |
1983年 | 15篇 |
1982年 | 6篇 |
1980年 | 8篇 |
1979年 | 9篇 |
1976年 | 3篇 |
1975年 | 5篇 |
1974年 | 6篇 |
1973年 | 5篇 |
1972年 | 7篇 |
1970年 | 4篇 |
排序方式: 共有1188条查询结果,搜索用时 31 毫秒
61.
62.
Y Ori A Korzets C Gruzman A Chagnac D Zevin T Weinstein M Herman U Gafter 《American journal of kidney diseases》1998,31(3):539-544
Four patients with end-stage renal failure on intermittent hemodialysis in whom rhabdomyolysis developed after major surgery are described. This possibly underdiagnosed complication was manifested by extreme hyperphosphatemia, hypocalcemia, and elevated creatine phosphokinase levels. Serum myoglobin levels further supported the diagnosis. The metabolic abnormalities reached a peak on the fourth postoperative day. The possible precipitating factors included opiates used for anesthesia and postoperative pain control, anesthetic agents, and surgical position. The preferred treatment option is increasing dialysis to control hyperphosphatemia and hypocalcemia. 相似文献
63.
Duodenal "diverticulization" for duodenal and pancreatic injury 总被引:20,自引:0,他引:20
Duodenal “diverticulization” has been achieved in thirty-four cases of combined duodenal and pancreatic or severe duodenal or pancreatic injury. The operation consists of gastric antrectomy with end to side gastrojejunostomy, tube duodenostomy, closure of the duodenal perforation, and drainage. The combined mortality for these thirty-four cases and a previously reported series of sixteen cases is 16 per cent. Regional complications that developed after duodenal diverticulization were generally well tolerated and not lethal. All duodenal and pancreatic fistulas closed spontaneously. 相似文献
64.
65.
66.
67.
Surgical utility of a new carbon dioxide laser fiber: functional and histological study 总被引:4,自引:0,他引:4
Devaiah AK Shapshay SM Desai U Shapira G Weisberg O Torres DS Wang Z 《The Laryngoscope》2005,115(8):1463-1468
OBJECTIVES/HYPOTHESIS: The objective was to investigate the functional and histological properties of surgical procedures using a new carbon dioxide (CO2) laser fiber. STUDY DESIGN: In vitro and in vivo animal models. METHODS: In vitro experiments using porcine true vocal cord and arytenoid cartilage were designed to study the histological effects of using a photonic band-gap fiber assembly for CO2 laser energy delivery. Continuous and pulsed-wave settings at different wattages were tested. In vivo endoscopic surgery on canine larynges and buccal mucosa were performed to examine functional and short-term healing when performing photonic band-gap fiber assembly-assisted laser surgery. RESULTS: In vitro experiments showed consistent cutting with the photonic band-gap fiber assembly using either straight or 90 degrees bent-tip fibers. The surrounding tissue in these experiments showed little collateral thermal damage with the average range of thermal width from 14.1 to 18.8 microm in vocal cords and from 5.2 to 10.5 microm in cartilage. Similarly, thermal depth ranged from 28.0 to 350.0 microm in vocal cords and from 269.7 to 739.6 microm in cartilage. In vivo experiments demonstrated ease in maneuvering and flexibility for cutting. There was minimal blood loss, smoke plume, or carbonaceous debris. There were no postprocedural complications. Normal oral intake was noted on postprocedural day 1. There was no evidence of stridor or respiratory distress. Seven days after the procedure, re-epithelialization was complete in the buccal incisions and nearly completed in the laryngeal incisions. CONCLUSION: The photonic band-gap fiber assembly produced reliable results in cutting with functional characteristics representing an improvement over current technology. The device shows promise as an effective tool for minimally invasive procedures that are amenable to use of the CO2 laser. 相似文献
68.
Freo U Ori C Weiss SR Perini GI 《Journal of neural transmission (Vienna, Austria : 1996)》2005,112(11):1447-1462
Summary. The time course and the relation to dose of locomotor activity and of the regional cerebral metabolic rates for glucose (rCMRglc)
were measured in freely moving Sprague-Dawley rats after intracerebroventricular administration of ovine corticotropin releasing
factor (oCRF). Motor activity was determined using a familiar photocage cell. rCMRglc was measured, using the quantitative
autoradiographic [14C]2-deoxyglucose procedure, in 73 brain regions at 10, 30, 90 and 180 min after administration of oCRF 10 μg and at 90 min
after oCRF 0.1, 1 and 100 μg. oCRF 10 μg increased motor activity in a sustained fashion and increased rCMRglc with different
time courses throughout brain regions. In cerebellar regions rCMRglc increases peaked at 90 min and were sustained up to 180 min.
In non-cerebellar regions rCMRglc increases peaked at 90 min but declined thereafter. At lower doses (0.1 and 1 μg) oCRF increased
rCMRglc in fewer brain regions (1 and 5 regions affected, average increases 1% and 7%) including cerebellar areas and brainstem
sensory nuclei and decreased rCMRglc in medial prefrontal cortex. At the highest dose (100 μg) oCRF induced large and widespread
rCMRglc increases in cerebellar, brainstem, hypothalamic, limbic and neocortical areas (40 brain regions affected, average
increase 32%). The findings indicate that cerebellar areas and brainstem nuclei are highly sensitive to oCRF and may mediate
oCRF autonomic and behavioral effects. 相似文献
69.
70.
Cardiac catheterization techniques in pulmonary hypertension 总被引:2,自引:0,他引:2
Once considered dangerous and potentially life threatening, cardiac catheterization of the patient with pulmonary hypertension can be performed safely and provides essential information in the diagnosis and management of pulmonary hypertension. This article summarizes the modern techniques used for right-heart catheterization, selective pulmonary angiography, and pulmonary angioscopy in the evaluation of the patient with pulmonary hypertension or suspected chronic thromboembolic disease. 相似文献