全文获取类型
收费全文 | 1719篇 |
免费 | 101篇 |
国内免费 | 24篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 181篇 |
妇产科学 | 31篇 |
基础医学 | 178篇 |
口腔科学 | 50篇 |
临床医学 | 162篇 |
内科学 | 387篇 |
皮肤病学 | 24篇 |
神经病学 | 39篇 |
特种医学 | 473篇 |
外科学 | 100篇 |
综合类 | 30篇 |
预防医学 | 47篇 |
眼科学 | 13篇 |
药学 | 58篇 |
中国医学 | 4篇 |
肿瘤学 | 65篇 |
出版年
2022年 | 6篇 |
2021年 | 13篇 |
2020年 | 12篇 |
2019年 | 7篇 |
2018年 | 16篇 |
2017年 | 11篇 |
2016年 | 22篇 |
2015年 | 27篇 |
2014年 | 32篇 |
2013年 | 59篇 |
2012年 | 29篇 |
2011年 | 27篇 |
2010年 | 73篇 |
2009年 | 60篇 |
2008年 | 43篇 |
2007年 | 34篇 |
2006年 | 36篇 |
2005年 | 23篇 |
2004年 | 17篇 |
2003年 | 18篇 |
2002年 | 23篇 |
2001年 | 17篇 |
2000年 | 27篇 |
1999年 | 29篇 |
1998年 | 136篇 |
1997年 | 119篇 |
1996年 | 124篇 |
1995年 | 91篇 |
1994年 | 74篇 |
1993年 | 82篇 |
1992年 | 25篇 |
1991年 | 22篇 |
1990年 | 15篇 |
1989年 | 59篇 |
1988年 | 46篇 |
1987年 | 50篇 |
1986年 | 45篇 |
1985年 | 48篇 |
1984年 | 24篇 |
1983年 | 32篇 |
1982年 | 34篇 |
1981年 | 20篇 |
1980年 | 36篇 |
1979年 | 14篇 |
1978年 | 16篇 |
1977年 | 17篇 |
1976年 | 23篇 |
1975年 | 24篇 |
1971年 | 2篇 |
1966年 | 3篇 |
排序方式: 共有1844条查询结果,搜索用时 15 毫秒
101.
102.
Dios Castro E Maquet Dusart JA 《Archivos de la Sociedad Espa?ola de Oftalmología》2000,75(11):775-778
PURPOSE/METHOD: We present a case of a patient who developed recurrent epithelial herpes simplex keratitis after starting treatment with latanoprost. Her ophthalmic history was only remarkable for a past episode of herpetic keratitis 21 years previously. RESULTS/CONCLUSIONS: Episodes of herpetic keratitis were under remission only when latanoprost was discontinued. No recurrences of herpes simplex keratitis have been observed since then. Latanoprost usage might be associated with recurrent episodes of herpes simplex keratitis in patients with previous history of ocular herpes simplex virus infection. 相似文献
103.
Monge-Argiles J Maloteaux J Van Den Bergh P Sindic C 《Neurología (Barcelona, Spain)》2002,17(2):110-112
We report a patient with a peripheral neuropathy as the first symptom of sarcoidosis. The systemic illness was proved by the presence of typic granulomes in the bone marrow. The fact that sarcoidosis is the cause for the neuropathy is supported by the temporary relation and by the good response of all clinical picture to the corticosteroid therapy.Sarcoid neuropathy can rarely be the presenting feature of sarcoidosis. 相似文献
104.
Zupancic B Antabak A Popovic L Zupancic V Cavcic J Majerovic M Batinica S Sern RP Poropat M Leutic T 《Archives of medical research》2002,33(2):158-161
BACKGROUND: Early pyeloplasty for the treatment of congenital ureteropelvic junction obstruction to maximize nephron salvage is justified only if potential hazards of operating on small infants are avoided. METHODS: The records were analyzed of all infants who underwent pyeloplasty over a 5-year period. Open pyeloplasty was performed if collecting systems had deteriorated or were demonstrated to be obstructed; it was also performed for severe cases of hydronephrosis. Outcome of surgery in the younger infant (patients <2 months of age) was compared with the older infant group (patients >2 months of age). Preoperative evaluation in case of mild or moderate hydronephrosis was directed toward ruling out a non-obstructed collection system and included voiding cystourethrography, and serial ultrasonography and/or dual isotope diuretic renography. Postoperative assessment consisted of serial ultrasonography and/or nuclear imaging to confirm decompression and relief of obstruction. RESULTS: A total of 24 pyeloplasties were performed on 22 patients in the younger infant group (two bilateral) and 30 were performed on 27 infants in the older infant group (three bilateral). The only significant differences between the groups were as follows: patients in the younger infant group were likely to present in utero (75%, p = 2.69), whereas those in the older infant group were more likely to present with a urinary tract infection (48%, p = 4.12). During follow-up examination, 23 renal units in the younger infant group and 24 in the older infant group were judged to be stable or improved. Four kidneys were not salvaged after pyeloplasty, one in the younger infant group and three in the older infant group. CONCLUSIONS: Good results of pyeloplasties performed in the infants in this series support early correction of ureteropelvic junction obstruction in infants. 相似文献
105.
山苍子水提物柠檬醛抗哮喘作用的实验研究 总被引:5,自引:0,他引:5
目的:研究山苍子水提物柠檬醛的抗哮喘作用及其机理。方法:通过豚鼠氯化乙酰胆碱-磷酸组胺喷雾致喘法、小鼠浓氨水喷雾引咳法、小鼠酚红排泻法观察柠檬醛的平喘、镇咳、祛痰作用,通过观察张力变化研究柠檬醛对豚鼠离体气管环张力的影响及乙酰胆碱对气管收缩的抑制作用。结果:柠檬醛能明显延长氯化乙酰胆碱-磷酸组胺喷雾引起的豚鼠哮喘潜伏期,能延长浓氨水喷雾诱发小鼠咳嗽反应潜伏期,明显减少咳嗽次数。能增加小鼠呼吸道酚红排泌量,能抑制乙酰胆碱对豚鼠离体气管平滑肌的收缩作用,使乙酰胆碱所致气管平滑肌量效曲线右移。结论:柠檬醛气雾剂具有一定的平喘、镇咳和祛痰作用,具有良好的支气管解痉作用。 相似文献
106.
107.
PURPOSE: We assess the reliability of intraoperative cavernous nerve stimulation for producing an erectile response during radical prostatectomy. MATERIALS AND METHODS: In 61 patients cavernous nerve function was assessed during radical retropubic prostatectomy using a CaverMap nerve stimulator. Control stimulation was also performed before and after prostatic dissection by placing the nerve stimulator tip on the anterior bladder wall. An increase in penile circumference measured by the device was considered a tumescence response while any measurable detumescence was also categorized. RESULTS: Patient age ranged 43 to 72 years (mean 59.8). Before apical dissection 41% and 46% had tumescence, 31% and 21% had detumescence, and 28% and 33% had no response with stimulation of the neurovascular bundle and anterior bladder wall, respectively. After dissection 42% and 25% had tumescence, 16% and 18% had detumescence, and 42% and 57% had no response with stimulation of the neurovascular bundle and anterior bladder wall, respectively. CONCLUSIONS: A response to neurovascular bundle stimulation using this device does not necessarily correlate with the precise anatomical location of the cavernous nerves. There is considerable background variability related to anesthesia, surgical manipulation and other undefined factors that may cause minor but measurable changes in penile circumference. 相似文献
108.
湘雅三医院消化科近年收治1例胃肠道、食管、腹膜后、腹腔干及颈部多发血管瘤患者,对其给予食管、胃血管瘤套扎及鱼肝油酸钠注射治疗,出院后随访,患者一般情况可.因本病罕见,现将其报告如下. 相似文献
109.
110.
Aim: Electrical burns account for up to 10% of burns admissions worldwide. Although a potentially serious mechanism of injury in children, there exists limited Australian data. This study aimed to describe the epidemiology, presentation, management and complications of electrical burn injuries in children. Methods: We performed a retrospective case note review of all children under 16 years of age with electrical burns admitted to the New South Wales Paediatric Burns Centre over an 8‐year, 2‐month study period between November 1995 and December 2003. Results: Twenty‐two cases were identified. The mean age at presentation was 7.6 years (range 8 months to 14.3 years). Eighty‐six percent of cases were sustained from a Low Voltage (<1000 W) power source and 55% occurred in males. The total body surface area burnt ranged from 0.5% to 35% with an average of 4%. Fourteen children had their burns managed non‐operatively, but eight required various surgical procedures ranging from local debridement and primary closure to full‐thickness skin grafting. The average length of hospital stay was 6 days (range 1–58 days). Complications occurred in 4 of the 22 patients (18%) and included wound infections, acute renal failure because of myoglobinuria, permanent electrocardiogram changes and long‐term paraesthesia. Three patients (14%) suffered continued morbidity because of scarring, amputation and psychological disturbance. There was no mortality. Conclusions: Electrical injury was an infrequent but potentially serious cause of injury in children. Minor injuries were successfully managed non‐operatively. Neurological sequelae, cardiac arrhythmias and renal failure remain serious complications in up to 20% of cases. 相似文献