全文获取类型
收费全文 | 25594篇 |
免费 | 528篇 |
国内免费 | 47篇 |
专业分类
耳鼻咽喉 | 750篇 |
儿科学 | 520篇 |
妇产科学 | 2086篇 |
基础医学 | 3615篇 |
口腔科学 | 1008篇 |
临床医学 | 974篇 |
内科学 | 4735篇 |
皮肤病学 | 782篇 |
神经病学 | 2263篇 |
特种医学 | 364篇 |
外科学 | 2605篇 |
综合类 | 90篇 |
一般理论 | 1篇 |
预防医学 | 1678篇 |
眼科学 | 1086篇 |
药学 | 2917篇 |
中国医学 | 30篇 |
肿瘤学 | 665篇 |
出版年
2022年 | 313篇 |
2021年 | 697篇 |
2020年 | 181篇 |
2019年 | 289篇 |
2018年 | 493篇 |
2017年 | 317篇 |
2016年 | 349篇 |
2015年 | 399篇 |
2014年 | 580篇 |
2013年 | 783篇 |
2012年 | 1024篇 |
2011年 | 1160篇 |
2010年 | 586篇 |
2009年 | 349篇 |
2008年 | 733篇 |
2007年 | 950篇 |
2006年 | 1050篇 |
2005年 | 950篇 |
2004年 | 1029篇 |
2003年 | 998篇 |
2002年 | 839篇 |
2001年 | 691篇 |
2000年 | 678篇 |
1999年 | 565篇 |
1998年 | 175篇 |
1992年 | 371篇 |
1991年 | 323篇 |
1990年 | 361篇 |
1989年 | 407篇 |
1988年 | 466篇 |
1987年 | 450篇 |
1986年 | 459篇 |
1985年 | 435篇 |
1984年 | 350篇 |
1983年 | 256篇 |
1979年 | 530篇 |
1978年 | 317篇 |
1977年 | 256篇 |
1976年 | 248篇 |
1975年 | 342篇 |
1974年 | 512篇 |
1973年 | 516篇 |
1972年 | 432篇 |
1971年 | 409篇 |
1970年 | 388篇 |
1969年 | 409篇 |
1968年 | 355篇 |
1967年 | 274篇 |
1966年 | 291篇 |
1965年 | 176篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
Polymyositis-dermatomyositis:25 years of follow-up of 50 patients disease course, treatment, prognostic factors 总被引:1,自引:0,他引:1
H Chwalińska-Sadowska H Ma?dykowa 《Materia medica Polona. Polish journal of medicine and pharmacy》1990,22(3):213-218
Therapeutic results were analysed in 50 patients, including 17 with polymyositis (PM) and 30 with dermatomyositis (DM). All patients were treated with prednisone (Encorton, Polfa) and 47% of patients with PM and 73% with DM required combined treatment with prednisone and cytostatic agents, mostly with cyclophosphamide (Endoxan G.D.R.). Long-term treatment monitored with the clinical status led to remissions persisting after treatment discontinuation in 17.6% of PM patients and 24.2% of DM patients. In 64.7% of PM patients and 57.6% of DM patients regression of the clinical signs of the disease was achieved but these patients required further treatment. No information was obtained on 5 cases. Four DM patients died. The cumulative 17-year survival rate of PM patients was 100%, and that of DM patients was 78.8% . In 45 follow-up cases, the mortality was 8.9%. Side effects of the combined treatment included most frequently mucosal candidiasis (22.2%), transient leucopenia (14.8%) and recurrent respiratory tract infections (11.1%). In 5 cases liver biopsy was done and histological examination disclosed moderate fatty, glycogen and vacuolar degeneration of the hepatocytes. The statistical analysis of prognostic factors such as the diagnosis of PM or DM, sex, age at disease onset, disease duration till diagnosis establishing and beginning of treatment, fever, dysphagia, circulatory and respiratory changes, leucocytosis nad ESR at the beginning of the disease showed that sex (female), older age at disease onset and respiratory system changes may be accepted as poor prognosis factors. 相似文献
32.
33.
Marcin Wojnar Dariusz Wasilewski Halina Matsumoto Artur Cedro 《Alcoholism, clinical and experimental research》1997,21(8):1351-1355
A retrospective study compared the course of alcohol withdrawal, including delirium tremens, in women and men hospitalized in the Nowowiejski Hospital in Warsaw from 1973 to 1987. Medical records pertaining to 1179 patients were analyzed; 13.8% of these patients were women and 86.2% were men. The study showed that women began intensive alcohol drinking later than men ( p < 0.0001), but the period between the onset of alcohol abuse and the first occurrence of alcohol withdrawal was shorter in women than in men ( p < 0.0001). In the period of heavy drinking before hospitalization, women consumed significantly less alcohol then men ( p < 0.0001); moreover, women drank nonbeverage alcohol less frequently than men ( p < 0.05). Women were hospitalized substantially longer than men ( p < 0.0001), whereas the duration of alcohol withdrawal symptoms at the time of hospitalization was comparable in both groups. Withdrawal seizures were significantly more frequent among men than among women ( p < 0.001). Significant differences in the patients'somatic conditions were not noted between the groups, with the exception of anemia and decreased potassium concentration, which were more frequently observed in women (both p < 0.0001), and of increased concentration of ALT and hypoproteinemia, which were more frequent in men (respectively, p < 0.05 and p < 0.01). Co-existing personality disorders, depressive disorders, and anxiety disorders—as well as abuse of benzodiazepines and barbiturates—were more frequently observed in women ( p < 0.0001). The period between the first hospitalization due to alcohol withdrawal and the time of death was significantly shorter in men than in women ( p < 0.05). The results point to differences in the conditions and the course of alcohol dependence and alcohol withdrawal between women and men. 相似文献
34.
An evaluation of treatment results of unstable spine fractures using the Harrington instruments in 37 patients has been performed. The described method can result in anatomical restoration of the vertebral canal. If vertebral canal lumen is not restored, anterior decompression should be performed making possible removal of posteriorly dislocated bone fragments. The earlier anterior decompression, the greater chance of improvement of neurological conditions. The described procedure is especially useful in fractures with partial palsy. After treatment 70 per cent of the patients with partial palsy resumed their normal lives. 相似文献
35.
Summary 67 cases of brain abscess were analyzed retrospectively. As 2 comatose patients died on admission before any treatment was started, the results are based on 65 treated patients. Different methods of treatment included: total removal in 36 patients, drainage in 14, aspiration in 6 and conservative treatment in 9. Management mortality was 18,5% and was almost not dependent on the method of treatment (except aspiration) being lowest in the drainage group. The mortality was significantly higher in patients with serious impairment of consciousness on admission.Follow-up examination after 1 to 11 years was performed in 47 out of 53 discharged patients and revealed in 25 of them (53%) full recovery. 10 additional cases (21%) are independent. The best early and long term results were obtained in patients by drainage and medical treatment.Chronic epilepsy developed in 34% of patients with supratentorial lesions. The risk of epilepsy was lowest in the group of patients treated by drainage.The authors present the opinion that removal of brain abscess is necessary only in exceptional cases. 相似文献
36.
37.
Histamine (HA) concentrations and HA metabolizing enzyme activities were measured in macroscopically unchanged mammary glands and in tumor tissue of C3H mice carrying spontaneous mammary tumor as well as im mammary glands of control subjects matched for age.The great fall in HA level and the enzyme activities in tumor tissue was confirmed. In host mammary glands which showed no current evidence of neoplasm, consistently lower than normal HA concentrations and elevated transglutaminase (TG) activity were found, It is suggested, therefore, that HA level and TG activity may provide an early indication of the development of spontaneous mammary tumor. 相似文献
38.
W Boratyński 《Neurologia i neurochirurgia polska》1992,26(6):845-851
Between 1980 and 1987, 113 children with astrocytoma of the cerebellum were treated. The range of the age was 11 months to 15 years. 103 children were treated by surgery only and 10 received surgery and postoperative irradiation. Shunting was necessary in 22% patient with cerebellar astrocytoma. One-year survival for patients with cerebellar astrocytoma was 97%, five-year 89%. 相似文献
39.
W Miodoński 《Chirurgia narzadów ruchu i ortopedia polska》1990,55(4-6):325-327
A case of 20 years old patient with the gunshot injury of the spine was presented. The bullet has stuck in the spinal canal at L3-L4 level causing no neurological disturbances. It was removed in our department gunshot wounds to do this in district hospital. No complication occurred in the postoperative course. 相似文献
40.