全文获取类型
收费全文 | 134429篇 |
免费 | 10108篇 |
国内免费 | 4113篇 |
专业分类
耳鼻咽喉 | 1008篇 |
儿科学 | 2402篇 |
妇产科学 | 1807篇 |
基础医学 | 7867篇 |
口腔科学 | 2925篇 |
临床医学 | 15926篇 |
内科学 | 20866篇 |
皮肤病学 | 2338篇 |
神经病学 | 6810篇 |
特种医学 | 4444篇 |
外国民族医学 | 39篇 |
外科学 | 13631篇 |
综合类 | 19333篇 |
现状与发展 | 24篇 |
一般理论 | 3篇 |
预防医学 | 6173篇 |
眼科学 | 2104篇 |
药学 | 10905篇 |
84篇 | |
中国医学 | 11336篇 |
肿瘤学 | 18625篇 |
出版年
2024年 | 373篇 |
2023年 | 2580篇 |
2022年 | 4666篇 |
2021年 | 6205篇 |
2020年 | 5733篇 |
2019年 | 5185篇 |
2018年 | 4689篇 |
2017年 | 5078篇 |
2016年 | 5413篇 |
2015年 | 5256篇 |
2014年 | 9557篇 |
2013年 | 11903篇 |
2012年 | 7819篇 |
2011年 | 8343篇 |
2010年 | 6859篇 |
2009年 | 6329篇 |
2008年 | 6329篇 |
2007年 | 6731篇 |
2006年 | 5937篇 |
2005年 | 5223篇 |
2004年 | 4216篇 |
2003年 | 3797篇 |
2002年 | 3100篇 |
2001年 | 2730篇 |
2000年 | 2275篇 |
1999年 | 1806篇 |
1998年 | 1487篇 |
1997年 | 1266篇 |
1996年 | 1073篇 |
1995年 | 949篇 |
1994年 | 757篇 |
1993年 | 593篇 |
1992年 | 523篇 |
1991年 | 475篇 |
1990年 | 406篇 |
1989年 | 365篇 |
1988年 | 352篇 |
1987年 | 319篇 |
1986年 | 248篇 |
1985年 | 289篇 |
1984年 | 256篇 |
1983年 | 180篇 |
1982年 | 196篇 |
1981年 | 202篇 |
1980年 | 157篇 |
1979年 | 133篇 |
1978年 | 76篇 |
1977年 | 54篇 |
1976年 | 59篇 |
1975年 | 35篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
中药聪脑汤治疗老年性痴呆的临床研究 总被引:3,自引:1,他引:2
目的:比较聪脑汤和双益平(石衫碱甲)片剂治疗老年性痴呆(阿尔茨海默病,Alzheimerdisease,AD)的疗效。方法:35例AD病人随机分为2组,聪脑汤组20例,双益平组15例;分别给予聪脑汤50ml,口服,日3次和双益平片剂0.15mg,口服,日2次,两组疗程均为8w。结果:与治疗前相比,两组长谷川痴呆量表(HDS-R)积分均有显著性改善(P<0.05),聪脑汤组和双益平组总有效率分别为75%和73.4%,两组比较差异无显著性。结论:聪脑汤对AD临床症状有一定改善作用。 相似文献
82.
István Pintér János Mátyus Zoltán Czégány Judit Harsányi Marietta Homoki Miklós Kassai Eva Kiss István Kiss Erzsébet Ladányi Lajos Locsey Lajos Major Mihály Misz Lajos Nagy Kálmán Polner Jeno Rédl István Solt Béla Tichy Marietta T?r?k Gábor Varga Gyula Wagner Imre Wórum Béla Zsoldos László Pótó Katalin Dérczy István Wittmann Judit Nagy 《Nephrology, dialysis, transplantation》2004,19(4):840-843
BACKGROUND: The diagnosis of analgesic nephropathy has improved significantly with modern imaging techniques. We reviewed a large portion of the Hungarian dialysis population to obtain additional insight into the problem. METHODS: Twenty-two participating dialysis units enrolled 1400 patients on renal replacement therapy between 1 January 1995 and 1 January 1998. Patients with no known aetiology (n = 284) were interviewed and studied with renal imaging. We assessed the presence of decreased renal mass combined with either bumpy contours, papillary calcification, or both. The subjects studied were interrogated extensively. RESULTS: Our survey suggested analgesic nephropathy in 47 of 1400 patients (3.3%), 3-fold higher than the EDTA database estimate for Hungary. The analgesics most commonly abused were phenacetin-containing mixtures. The driving symptoms were mainly headache and joint pain. Cardiovascular complications were more common than in the rest of the dialysis population, independent of smoking and lipid values (P<0.01). CONCLUSIONS: Phenacetin should be banned. Our study results support the need for longitudinal cohort and case-control studies in Hungary. 相似文献
83.
Over the last few decades the there has been a huge increase in the incidence of oesophageal adenocarcinoma, surpassing that of any other solid tumour. Barrett's oesophagus is recognised as a pre-malignant cursor. Surveillance programmes have evolved to monitor Barrett's oesophagus, with the intention to detect early malignant transformation. Using photosensitive agents photodiagnosis is developing to detect this transformation before it is visible endoscopically to allow early treatment. Photodynamic therapy is a non-thermal endoscopic ablative technique, which incorporates the same photosensitive agents to treat Barrett's oesophagus as well as malignant disease. In this article we review the present status of photodiagnosis and photodynamic therapy in the management of Barrett's oesophagus and early oesophageal carcinoma. 相似文献
84.
心理支持疗法对机械通气患者应激反应的影响 总被引:2,自引:1,他引:1
目的 观察心理支持疗法(PST)对ICU患者机械通气应激反应的影响。方法 将34例连续机械通气时间在20h的清醒患者,随机分为采用标准的PST方法进行治疗的观察组和对照组,观察焦虑抑郁程度和应激反应改变情况。结果 对照组患者的焦虑抑郁程度明显高于观察组,部分应激反应激素水平升高幅度也明显大于观察组。结论 PST可通过缓解机械通气患者的焦虑抑郁等不良情绪状态减轻机械通气带来的各种心身应激反应,有利于提高机械通气治疗的有效性和安全性。 相似文献
85.
Eileen Trafimow Ph.D. Marie Weissbourd Ph.D. Judith Wilen Ph.D. 《Journal of Child and Adolescent Group Therapy》1992,2(3):141-148
Traditionally, psychotherapy groups for children included only relatively intact youngsters. This paper describes a group consisting of four (near) psychotic children and two co-therapists which met for over three years. The developmental changes which occurred in the group over the course of time will be identified and discussed using a neo-psychoanalytic, object relations framework. 相似文献
86.
An evaluation of the residual activity of quick-drying agents (alcoholic solutions) used for hygienic hand disinfection is described. We looked for residual efficacy following hand disinfection with soap and water alone or followed by one of two alcoholic handrub lotions supplied from an automatic hand washing machine. The bacterial counts on the hands obtained before and within 2 successive hours after disinfection showed that alcoholic chlorhexidine was the most effective for 10 minutes after contamination of the hands. WELPAS® (alcoholic chlorbenzarconium) followed this in its immediate effect and was better than soap and water alone. There were no significant differences after 30‘ or 120‘ between the three disinfecting methods. 相似文献
87.
Objective Report of two cases of exudative discoid and lichenoid dermatosis (Sulzberger-Garbe), with typical penile lesions. Differential diagnosis of persistent penile plaques. Background Following remission of the generalized eruption of exudative discoid and lichenoid dermatosis (Sulzberger-Garbe), it is not unusual to see a single remaining lesion localized on the penis. Since Sulzberger et al. (Sulzberger MB, Witten VH, Hunt JA. Puzzling persistent penile plaques. Arch Dermatol 1956:73:101-109) reviewed dermatoses presenting with puzzling persistent penile plaques in 1955, further dermatoses have evolved as important differential diagnoses. Much controversy has arisen as to the justification of exudative discoid and lichenoid dermatosis (Sulzberger-Garbe) as a disease entity. Conclusions Diagnosis of most cases of persistent plaques of dermatitis on the penis is possible with a careful examination of the entire skin, and a thorough history to discover past lesions. The possibility of malignancy makes a biopsy mandatory. Exudative discoid and lichenoid chronic dermatosis (Sulzberger-Garbe) typically responds well to systemic steroids. Intrale-sional triamcinolone acetonide has been demonstrated to be effective in the treatment of a persistent penile plaque in exudative discoid and lichenoid dermatosis (Sulzberger-Garbe), and may be helpful in discontinuing or reducing systemic therapy to a level compatible with long-term treatment. 相似文献
88.
王广顺 《中国烧伤创疡杂志》2003,15(1):54-57
目的:总结重度烧伤传统疗法无效改为再生医学(MEBT/MEB0)技术治疗变化规律和临床验.方法:将我科l995年5月至2002年5月收治的院外采用传统疗法无效改用MEBT/MEBO技术治疗的38例重度烧伤病人临床资料进行回顾性总结,病人一旦入院创面均改用MEBT/MEBO治疗,初始予以彻底清创,规范用药、规范操作,规范认识;全身实行系统综合治疗措施.以临床观察和病人感觉评价治疗效果。结果:本组38例全部治愈,末植皮自行愈合者21例.占55.26%.深Ⅲ度创面自愿要求植皮者17例,占44.74%。经随访多数无增生性瘢痕,部分愈后有局限性瘢癌,质软无残废。结论:重度烧伤经传统疗法久治不愈或疗效欠佳病人.病情复杂,并发症较多治疗难度也较大,再生医学可有效改善以上缺陷和病症.是重度烧伤病人传统治疗无效时的理想疗法。 相似文献
89.
Xu Jingying Liu Xinling Ma Zhuhong Chen LingDepartment of Acupuncture & Moxibustion General Hospital of PLA Beijing China 《世界针灸杂志》1994,(1)
In this paper,250 cases of headache,shoulder pain,lumbago and leg pain weretreated with 20%Angelicae Sinensis mixed with Vitamine B_(12) point-injection therapy.The total effective rate was 95.2%and in which the cure rate was 53.6%.Authors have found a close correlation between the effectiveness and the duration of disease. 相似文献
90.
We present an 8 year follow-up on a group of children with refractory epileptic seizures who participated in the early 1980s in a controlled group study on the effects of a broad-spectrum behavior modification treatment program on children with refractory epileptic seizures. In the original study, 18 children were divided into three groups: behavior modification group, attention control group, and control group. The purpose was to investigate the effects of a learning-based treatment program superimposed on a regular medical treatment program. Also, the effects of professional attention were evaluated. At the 10 week and 1 year follow-ups, only the group receiving the behavior modification intervention had a significantly reduced rate of seizure index. The present study investigates these same children 8 years later using the same methods of investigation for an additional 10 week period. The results indicate that a significant reduction in seizures was obtained only for the behavior modification group at the 8 year follow-up. 相似文献