全文获取类型
收费全文 | 3260004篇 |
免费 | 226178篇 |
国内免费 | 8442篇 |
专业分类
耳鼻咽喉 | 44834篇 |
儿科学 | 107960篇 |
妇产科学 | 90345篇 |
基础医学 | 458671篇 |
口腔科学 | 89632篇 |
临床医学 | 296398篇 |
内科学 | 633741篇 |
皮肤病学 | 78084篇 |
神经病学 | 263805篇 |
特种医学 | 125715篇 |
外国民族医学 | 918篇 |
外科学 | 486320篇 |
综合类 | 65446篇 |
现状与发展 | 6篇 |
一般理论 | 1175篇 |
预防医学 | 246135篇 |
眼科学 | 73766篇 |
药学 | 243496篇 |
13篇 | |
中国医学 | 7089篇 |
肿瘤学 | 181075篇 |
出版年
2019年 | 25523篇 |
2018年 | 36057篇 |
2017年 | 27912篇 |
2016年 | 32254篇 |
2015年 | 36186篇 |
2014年 | 49689篇 |
2013年 | 74287篇 |
2012年 | 99105篇 |
2011年 | 104793篇 |
2010年 | 63053篇 |
2009年 | 60232篇 |
2008年 | 97661篇 |
2007年 | 103892篇 |
2006年 | 105765篇 |
2005年 | 101403篇 |
2004年 | 97414篇 |
2003年 | 93970篇 |
2002年 | 90742篇 |
2001年 | 159384篇 |
2000年 | 163441篇 |
1999年 | 137551篇 |
1998年 | 38888篇 |
1997年 | 34516篇 |
1996年 | 34708篇 |
1995年 | 33532篇 |
1994年 | 30550篇 |
1993年 | 28660篇 |
1992年 | 106404篇 |
1991年 | 102446篇 |
1990年 | 99618篇 |
1989年 | 96374篇 |
1988年 | 88031篇 |
1987年 | 86016篇 |
1986年 | 80929篇 |
1985年 | 76999篇 |
1984年 | 57141篇 |
1983年 | 48148篇 |
1982年 | 28304篇 |
1981年 | 25100篇 |
1979年 | 50580篇 |
1978年 | 35282篇 |
1977年 | 30613篇 |
1976年 | 27801篇 |
1975年 | 30145篇 |
1974年 | 35385篇 |
1973年 | 33768篇 |
1972年 | 31879篇 |
1971年 | 29645篇 |
1970年 | 27253篇 |
1969年 | 26243篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
The question of the necessity of in-patient facilities of the area of (child and) adolescent neuropsychiatry is to be discussed further. The extremely optimistic views on this question of approximately 20 years ago cannot be maintained for the examined area and the examination time. In the LNKH Valduna/Vorarlberg, an establishment that was intended exclusively for adults until 1987, from 1980-1984 (evaluated in detail) and from 1984-1987 a further 60 minors were admitted. The exact evaluation shows that the conspicuousnesses of behaviour of a main group was so clear each time that it could not be treated elsewhere and certainly not in outpatient facilities. In the examined group the amount of patients with behaviour and socialization disorders outweighed by far the psychoses, also a high percentage of patients was multi morbid and/or had multiple handicaps. The resulting conclusion seems to us to be the necessity of setting-up a specific in-patients treatment unit for this group of patients with sufficient infrastructure. 相似文献
992.
B J Braakhuis D A Laarman J J Nauta M van Walsum G A van Dongen G B Snow 《Archives of otolaryngology--head & neck surgery》1989,115(9):1076-1078
Tumor material from 91 patients with squamous cell carcinoma of the head and neck was transplanted subcutaneously in athymic nude mice. In the first (man to mouse) passage, the calculated mean probability of tumor take in a single mouse was 11%. The probability of growth in the first passage was significantly better for moderately and poorly differentiated tumors than for well-differentiated tumors. Also, the implantation of lymph node material resulted in a significantly better tumor take rate than material taken from a primary tumor. Transplantability was not dependent on the following characteristics: localization, T or N stage of the tumor, or the sex of the patients. Once growth was established, all variables studied had no influence on the probability of growth in the subsequent mouse passages. A relationship between tumor growth in nude mice and patient prognosis could not be found. When transplanting head and neck squamous cell carcinoma in nude mice, it has to be recognized that some tumor characteristics will influence the success of tumor growth. 相似文献
993.
994.
995.
Transcultural understanding of a hereditary disorder. Mucopolysaccharidosis VI in a Vietnamese family 总被引:1,自引:0,他引:1
A case study of a family referred for clarification of cultural issues illustrates how a transcultural psychiatric service developed in the pediatric hospital setting can be used to advantage. A Vietnamese family with an inherited disorder. Mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome, MPS VI), resisted genetic counseling and contraception. Three out of their six children were affected, one with a fatal outcome. The transcultural consultation offered an understanding of their behavior and facilitated subsequent management. 相似文献
996.
The effect of social learning intervention on metabolic control of insulin-dependent diabetes mellitus in adolescents 总被引:1,自引:0,他引:1
This paper reports the results of an experimental study modeled after a study conducted by Kaplan et al. The hypothesis tested was: Adolescents who receive a social learning intervention (SLI) will show greater improvement in metabolic control of their diabetes than will adolescents who receive only traditional diabetes instruction. Thirty-four adolescents between the ages of 12 and 16 who attended a midwestern camp were randomly divided into two groups. Both groups attended a daily 1-hour teaching session about diabetes. Later each day, the experimental group received an SLI consisting of role modeling to help the subjects circumvent peer pressure. To determine metabolic control, HbA1 values were determined before and 3 1/2 months after the intervention. The control group showed no significant difference in HbA1 values, while the experimental group showed a decrease in metabolic control. 相似文献
997.
Gram negative endotoxins play a contributory role in the syndrome which results from over consumption of carbohydrates by horses and ponies. Since the antibiotic polymyxin B exerts a direct anti-endotoxin effect by chemically modifying the active lipid A moiety of endotoxin, it might be expected to protect horses after carbohydrate overload and provide a new therapeutic and experimental tool for this condition. The present study was undertaken to evaluate the effect of polymyxin B on hemostatic, hemodynamic, acid-base, and clinical aspects of the syndrome resulting from carbohydrate overload. Experimentally-induced carbohydrate overload resulted in lactic acidosis, hypercoagulability, hypovolemic shock and lameness. Although there was a slight delay in the onset of clinical signs resulting from experimental carbohydrate overload in treated animals, polymyxin B administered iv at 2.5 mg/kg every 6 hr failed to significantly ameliorate the coagulopathy, acidosis, lameness and shock induced by alimentary carbohydrate overload. 相似文献
998.
S M Nzuzi 《Clinics in Podiatric Medicine and Surgery》1989,6(2):273-294
The toenails and the rest of the human foot are constantly sandwiched in shoes, traumatized, and poorly supplied with blood that is necessary for normal morphology and function, resulting in more abnormal changes of the toenails (onychopathies). This article discusses briefly the following: (1) the conditions that are commonly seen in feet by podiatric practitioners; (2) clinical signs, symptoms, and etiology; and (3) differential diagnosis and care of the conditions. 相似文献
999.
Herniation of a thoracic disc in an acromegalic giant is reported. Degenerative changes in the spine in association with dorsal kyphosis, and the additional strain, resulted in the disc prolapse. 相似文献
1000.