全文获取类型
收费全文 | 73882篇 |
免费 | 7250篇 |
国内免费 | 2834篇 |
专业分类
耳鼻咽喉 | 173篇 |
儿科学 | 805篇 |
妇产科学 | 412篇 |
基础医学 | 3195篇 |
口腔科学 | 559篇 |
临床医学 | 6851篇 |
内科学 | 9154篇 |
皮肤病学 | 1690篇 |
神经病学 | 2428篇 |
特种医学 | 919篇 |
外国民族医学 | 11篇 |
外科学 | 2606篇 |
综合类 | 9102篇 |
现状与发展 | 7篇 |
一般理论 | 4篇 |
预防医学 | 4824篇 |
眼科学 | 832篇 |
药学 | 32327篇 |
97篇 | |
中国医学 | 3547篇 |
肿瘤学 | 4423篇 |
出版年
2024年 | 297篇 |
2023年 | 1563篇 |
2022年 | 2381篇 |
2021年 | 3272篇 |
2020年 | 3305篇 |
2019年 | 3118篇 |
2018年 | 2976篇 |
2017年 | 3106篇 |
2016年 | 2843篇 |
2015年 | 2841篇 |
2014年 | 4903篇 |
2013年 | 7645篇 |
2012年 | 4787篇 |
2011年 | 4860篇 |
2010年 | 3974篇 |
2009年 | 3403篇 |
2008年 | 3224篇 |
2007年 | 3201篇 |
2006年 | 2827篇 |
2005年 | 2555篇 |
2004年 | 2167篇 |
2003年 | 1999篇 |
2002年 | 1495篇 |
2001年 | 1426篇 |
2000年 | 1120篇 |
1999年 | 967篇 |
1998年 | 855篇 |
1997年 | 782篇 |
1996年 | 672篇 |
1995年 | 626篇 |
1994年 | 536篇 |
1993年 | 467篇 |
1992年 | 526篇 |
1991年 | 464篇 |
1990年 | 360篇 |
1989年 | 290篇 |
1988年 | 310篇 |
1987年 | 293篇 |
1986年 | 223篇 |
1985年 | 234篇 |
1984年 | 200篇 |
1983年 | 137篇 |
1982年 | 128篇 |
1981年 | 113篇 |
1980年 | 73篇 |
1979年 | 77篇 |
1978年 | 83篇 |
1977年 | 64篇 |
1976年 | 57篇 |
1975年 | 55篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Rajendra Nigam MD Richard Schottenfeld MD Thomas R. Kosten MD 《Journal of substance abuse treatment》1992,9(4):305-309
The authors describe the successful use of an adjunctive group psychotherapy for substance-abusing patients with major psychiatric disorders (bipolar, schizophrenia, schizoaffective, psychotic depression, and atypical psychosis). The group utilizes a psychoeducational approach that focuses on substance abuse causes and consequences, principles of recovery, and relapse prevention strategies. Eight patients with prolonged histories of abuse of cocaine, alcohol, marijuana, or other drugs were enrolled in this weekly group treatment at a community mental health center drug treatment program, while continuing in treatment with their current case manager or primary therapist. Six of the eight patients achieved periods of stable abstinence, documented by self-report, urine toxicology screens, continued group attendance, and improved social functioning. Case examples are utilized to illustrate the group process. 相似文献
33.
Lionel Sharpe 《Drug and alcohol review》1987,6(Z1):11-14
Abstract: Twenty-six part-time students from a variety of professional backgrounds are enrolled in the first year of a Graduate Diploma in Social Science (Drug Dependence) at the Phillip Institute of Technology in Victoria. The course is conducted under the auspices of the School of Social Work and commenced in 1984. It is argued that the graduates from this unique course could play a key role in providing personnel to fill positions in the areas of clinical work, staff development, drug education, programme development and management and research. 相似文献
34.
The clinical and electrophysiological features of a truncal myoclonus in a 55-year-old man are described. The electromyographic characteristics point toward propriospinal myoclonus. It is suggested that a myoclonic generator was released after use of ciprofloxacin, by antagonising the gamma-aminobutyric acid metabolism. 相似文献
35.
M Carducci† A Latini† F Acierno‡ A Amantea† B Capitanio† B Santucci† 《Journal of the European Academy of Dermatology and Venereology》2004,18(2):201-203
The authors report a case of erythema multiforme in a 32-year-old woman who was also taking oral terbinafine for an onychomycosis. The patient data analysis showed serological positivity for cytomegalovirus (IgM and IgG) and hepatitis C virus and serological titre of antinuclear antibody was elevated. After a brief review of the literature the authors propose the possibility of virus-drug interaction as a model of adverse drug reactions. 相似文献
36.
S Álvarez-Ruiz† PF Peñas† J Fernández-Herrera† J Sánchez-Pérez† J Fraga‡ A García-Díez† 《Journal of the European Academy of Dermatology and Venereology》2004,18(3):310-313
In the last years, granulocyte and granulocyte-macrophage colony-stimulating factors (G-CSF and GM-CSF) are being increasingly used and several cutaneous eruptions have been reported in relation to these treatments. In 1991 Horn et al. described three patients with maculopapular eruption that paralleled the time of infusion of GM-CSF. Two of the cases showed an increase in the number and size of macrophages in the biopsy specimen. Since then, several cases have been reported showing this histopathological alteration that has been considered characteristic of reaction to G-CSF or GM-CSF. Although maculopapular eruption with enlarged macrophages can appear after chemotherapy treatment, we have found that the presentation of this eruption after the beginning of cytokine treatment is suggestive of the involvement of G-CSF and GM-CSF in the eruption. We described eight cases of patients treated with G-CSF or GM-CSF that developed maculopapular eruptions with enlarged macrophages. 相似文献
37.
Karen G. Louie Thomas C. Hamilton Robert H. Shoemaker Robert C. Young Robert F. Ozols 《Investigational new drugs》1992,10(2):73-78
Summary Five compounds which were identified as potential new anticancer drugs inin vitro screening with the human tumor colony forming assay were selected for further evaluation usingin vitro andin vivo models of human ovarian cancer. Three of five compounds were found to inhibitin vitro colony formation of ovarian cancer cell lines derived from both untreated and combination chemotherapy refractory patients. One compound was also found to prolong survival in a human ovarian carcinoma xenograft model system. This compound, chloroquinoxaline sulfonamide, was selected for development and has shown preliminary indication of activity in phase I clinical testing. 相似文献
38.
R. Sandell 《Acta psychiatrica Scandinavica》1994,89(6):433-440
A community-based case-finding sample of 1824 narcotic abusers in Stockholm County was used to standardize a set of rating scales in order to reflect levels of personality organization (PO), in the spirit of Kernberg's theory. PO is assumed to be a function of the ego's capacity to endure inner and outer stress, which manifests itself in the frequency and depth of regressions and the rate of recovery from them. The principles of a method, Rating Ego Balance, for charting the person's characteristic pattern of regression are presented, and its psychometric properties are described on the basis of item response theory. The scales have satisfactory reliabilities and maximal discrimination at subneurotic levels of PO. They show strong construct validity in relation to Kernberg's theory. 相似文献
39.
We reported a case of photoleukomelanodermatitis (Kobori) type drug eruption due to afloqualone (Arofuto®). The patient was given afloqualone and imipramine hydrochloride (Chrytemin®) for cervical spondylosis from November of 1990. Edematous erythema with slight itching appeared on the sun-exposed areas in December of 1990. As drug eruption was suspected, drugs were ceased, and the cutaneous lesions almost disappeared but pigmentations and depigmentations developed in spots in sun-exposed areas in March of 1991. Photopatch and oral challenge tests were positive. 相似文献
40.
Summary: Some of the properties of 4–bromobenzalde-hyde semicarbazone (compound IV), a prototype molecule of a new class of anticonvulsants, aryl semicarbazones, are described. Compound IV demonstrated activity in the maximal electroshock (MES) and subcutaneous pentylenetetrazol (scPTZ) tests in mice, with low neurotoxicity. When given orally to rats, it displayed high potency in the MES test and very low neurotoxicity, resulting in a high protective index (PI). Compound IV displayed no proconvulsant properties, and development of rapid tolerance was not noted. When administered intraperitoneally (i.p.) at doses of 100, 300, or 600 mg/kg to rats, compound IV had no effect on levels of γ-aminobu-tyric acid (GABA) or on GABA-T activity in whole brain. When tested in vitro, compound IV had no effect on rat brain GABA-T at a drug concentration of 100 μM. Although the activities of certain drug-metabolizing enzymes were increased after oral administration of compound IV to rats, these effects were less prominent than those of phenytoin (PHT) and carbamazepine (CBZ). The principal mode of action of compound IV does not appear to be an interaction with the GABAA receptor complex, and other mechanisms, involving excitatory amino acid neurotransmission, will have to be considered in future investigations of the anticonvulsant activity of this compound. 相似文献