全文获取类型
收费全文 | 68170篇 |
免费 | 4705篇 |
国内免费 | 728篇 |
专业分类
耳鼻咽喉 | 336篇 |
儿科学 | 1528篇 |
妇产科学 | 1090篇 |
基础医学 | 5003篇 |
口腔科学 | 1901篇 |
临床医学 | 8839篇 |
内科学 | 15125篇 |
皮肤病学 | 650篇 |
神经病学 | 3374篇 |
特种医学 | 1032篇 |
外国民族医学 | 5篇 |
外科学 | 9102篇 |
综合类 | 4993篇 |
现状与发展 | 1篇 |
一般理论 | 9篇 |
预防医学 | 8135篇 |
眼科学 | 520篇 |
药学 | 6677篇 |
51篇 | |
中国医学 | 2499篇 |
肿瘤学 | 2733篇 |
出版年
2024年 | 193篇 |
2023年 | 1466篇 |
2022年 | 1865篇 |
2021年 | 2949篇 |
2020年 | 2649篇 |
2019年 | 4748篇 |
2018年 | 3844篇 |
2017年 | 3031篇 |
2016年 | 1901篇 |
2015年 | 1964篇 |
2014年 | 3270篇 |
2013年 | 3584篇 |
2012年 | 2684篇 |
2011年 | 3034篇 |
2010年 | 2375篇 |
2009年 | 2248篇 |
2008年 | 2178篇 |
2007年 | 1985篇 |
2006年 | 1636篇 |
2005年 | 1359篇 |
2004年 | 1080篇 |
2003年 | 979篇 |
2002年 | 744篇 |
2001年 | 583篇 |
2000年 | 499篇 |
1999年 | 442篇 |
1998年 | 358篇 |
1997年 | 290篇 |
1996年 | 255篇 |
1995年 | 231篇 |
1994年 | 224篇 |
1993年 | 188篇 |
1992年 | 159篇 |
1991年 | 131篇 |
1990年 | 87篇 |
1989年 | 84篇 |
1988年 | 70篇 |
1985年 | 1455篇 |
1984年 | 2495篇 |
1983年 | 2308篇 |
1982年 | 1730篇 |
1981年 | 1806篇 |
1980年 | 1509篇 |
1979年 | 1317篇 |
1978年 | 1140篇 |
1977年 | 654篇 |
1976年 | 1102篇 |
1975年 | 972篇 |
1974年 | 811篇 |
1973年 | 781篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
M Oishi H Yokoyama N Abe K Iwasaki F Okuguchi K Kawai H Sugimoto H Takamura H Takeda K Doi K Hirao S Ikeda 《Diabetic medicine》2007,24(10):1149-1155
AIMS: To study the time and cost involved in the care of newly registered outpatients with Type 2 diabetes mellitus (DM), compared with patients with hypertension and/or hyperlipidaemia (HTL). METHODS: A total of 313 patients with DM and 58 patients with HTL without diabetes were registered on their first visits to 11 diabetes clinics across Japan. The time and cost involved in their care was recorded over the following 5 months. RESULTS: In the first 3 months, there was an extensive time commitment to both groups. The time spent by physicians was 1.5 times longer for DM than for HTL. The total care time spent by all the care providers for DM was twice that for HTL. The cost of DM care was twice that for HTL, with the cost of medicines excluded. However, half of the cost for DM was for laboratory tests. When these were excluded, and the remaining cost divided by the time spent, the amount for DM was half of that for HTL. Over the 5 months, mean glycated haemoglobin (HbA(1c)) in DM patients improved from 8.0% to 6.5%, and 72% of DM patients achieved the glycaemic target of HbA(1c) < or = 6.5%. CONCLUSIONS: DM care in a diabetes clinic requires a great deal more time and resources than HTL to achieve the best outcome. An educational system for self care, presently lacking in the primary care setting in Japan, would improve glycaemic control for DM patients in the community. 相似文献
12.
目的探讨初次献血对红细胞膜Na+-K+-ATP酶活性的影响.方法应用比色法分别检测50例符合献血条件的健康初次献血者献血前后的红细胞膜Na+-K+-ATP酶活性,并对结果进行分析.结果初次献血者献血前后红细胞膜Na+-K+-ATP酶活性分别为3.121±0.441和2.907±0.397 μmol.Pi/107 RBC.h,两者比较无明显差异(P>0.05).结论初次献血对红细胞膜Na+-K+-ATP酶活性无影响,献血不会造成红细胞功能损伤. 相似文献
13.
Hui-Ju Wen Ying-Chu Lin Yung-Ling Lee Yueliang Leon Guo 《Pediatric allergy and immunology》2006,17(7):489-494
High cord blood immunoglobulin E (cbIgE) is known to be associated with increased risks of atopic diseases in childhood. The relationship between genetic polymorphisms and high cbIgE has not been well documented. A cross-sectional study was conducted to assess the association between cbIgE and genetic polymorphisms of interleukin (IL)-4 -590C/T, the beta-subunit of the high-affinity receptor for IgE (FcepsilonRI-beta) E237G, lymphotoxin (LT)-alphaNcoI alleles, and tumor necrosis factor (TNF)-alpha -308G/A. A total of 320 mother-neonate pairs were recruited from four maternity hospitals from different locations of Taiwan. Cord blood was obtained and assayed for cbIgE. Polymerase chain reaction followed by restriction fragment length polymorphism was used to assess the genotypes. Three hundred pairs of mothers and neonates were included in the final analysis. Infants with IL-4 -590 C allele were found to have higher risk of elevated cbIgE (> or =0.35 IU/ml, 24.3%) (p = 0.004). After adjusting for gender, birth order, maternal age, and history of allergic disease in maternal and paternal families, odds ratios for CC and CT genotypes were 4.41 and 3.16 (95% confidence interval 0.78-22.67, and 1.66-6.13), respectively, using TT genotype as reference. The genotypes of FcepsilonRI-beta, LT-alpha, and TNF-alpha were not associated with cbIgE before or after the adjustment. Our finding suggested a significant association of cbIgE with genetic polymorphism of IL-4 -590C/T, but not with the genotypes of FcepsilonRI-beta, LT-alpha, and TNF-alpha. 相似文献
14.
15.
16.
R. W. Squier 《Acta psychiatrica Scandinavica》1995,91(6):402-409
A 28-item behavioral rating scale, the Acute Psychiatric Rating Scale (APRS), was developed using factor-analytic methods for the assessment of functionally disturbed psychiatric inpatients. Fifty-eight staff rated 74 patients on the scale. Seven factorial dimensions were extracted comprising neuroticism, aggression, emotional withdrawal, cognitive impairment, schizophrenia, hypomania and self-injuriousness. The scale was evaluated in 4 different psychiatric inpatient units: two acute admission wards, an intensive care unit and a regional secure unit. Behavioral ratings on the scale were related to several patient demographic and treatment variables, including age, sex, marital status, legal status, length of admission and electroconvulsive therapy. The scale was found to possess a clear factorial structure, good interrater reliability and promising clinical validity for further research use in psychiatric inpatient settings. 相似文献
17.
Intracranial actinomycosis in juvenile patients
Case report and review of the literature 总被引:1,自引:0,他引:1
F. Puzzilli Maurizio Salvati Andrea Ruggeri Antonino Raco Roberto Bristot Stefano Bastianello Pierpaolo Lunardi 《Child's nervous system》1998,14(9):463-466
A case of actinomycotic brain infection in a juvenile patient is described. Cases of actinomycosis affecting the head and
neck are rare, particularly in juvenile patients. In this case complete resolution of the infection was achieved by means
of surgical treatment and prolonged antibiotic therapy. The authors emphasize the importance of a combined approach for treatment
of this unusual brain infection and stress the difficulties involved in the diagnosis of this pathology.
Received: 3 November 1997 相似文献
18.
Andrew R. Hoellein MD Christopher A. Feddock MD Charles H. Griffith III MD MSPH John F. Wilson PhD Donald R. Barnett MD MSPH Pat F. Bass III MD MS T. Shawn Caudill MD MSPH 《Journal of general internal medicine》2004,19(5P2):562-565
Due to recent public debate and newly imposed resident work hour restrictions, we decided to investigate the relationship of resident call status to their ambulatory patients' satisfaction. Resident continuity clinic patients were asked to rate their level of satisfaction on a 10-point Likert-type scale. Using multiple regression approaches, these data were then assessed as a function of resident call status. We found that in 646 patient encounters, patient satisfaction scores were significantly less when the resident was postcall, 8.99 ± 1.8, than when not postcall, 9.31 ± 1.3. We herein discuss etiologies and implications of these findings for both patient care and medical education. 相似文献
19.
Peter I. Buerhaus 《Journal of nursing scholarship》2004,36(4):366-370
PURPOSE: To describe and discuss the status of patient safety in U.S. hospitals. METHODS: Personal interview. This report is part of a series of discussions with a leading expert on patient safety. FINDINGS AND CONCLUSIONS: Some improvements have been made in the past 10 years. But changes have not been adequate. Continuing barriers include the punitive environment in hospitals, physicians' denial of the scope of the problem, lack of national leadership, and lack of systems thinking. 相似文献
20.
AIMS: To examine the association between maternal glycated haemoglobin in the second half of diabetic pregnancies and the relative risk of delivering large-for-gestational-age (LGA) babies, controlling for maternal body mass index (BMI) before pregnancy, weight gain, age, White class and smoking habits. METHODS: We identified all pregnant diabetic women in North Jutland County, Denmark from 1985 to 2003. Data on HbA(1c) values from the 20th gestational week to term were collected from medical records and the babies were classified as large, normal or small for gestational age. The association between glycated haemoglobin (HbA(1c)) and relative risk of delivering an LGA baby was quantified based on logistic regression models and stratified analysis controlling for the five covariates. RESULTS: We included 209 singleton pregnancies with assessable HbA(1c) values of which 59%[95% confidence interval (CI) 52-65%] terminated with an LGA baby. Increasing levels of HbA(1c), BMI and weight gain were all associated with increasing risk of delivering an LGA baby. Analyses stratified according to maternal BMI showed that the association between HbA(1c) and risk of delivering an LGA baby was restricted to pregnancies with pre-pregnancy BMI > 23 kg/m(2). We found no association between HbA(1c) and risk of delivering an LGA baby in pregnancies with lower BMI. CONCLUSION: The positive association between glycated haemoglobin and birth of an LGA baby seems to be restricted to women with BMI > 23 kg/m(2). 相似文献