全文获取类型
收费全文 | 1106篇 |
免费 | 43篇 |
国内免费 | 27篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 56篇 |
妇产科学 | 5篇 |
基础医学 | 147篇 |
口腔科学 | 23篇 |
临床医学 | 122篇 |
内科学 | 250篇 |
皮肤病学 | 24篇 |
神经病学 | 41篇 |
特种医学 | 200篇 |
外科学 | 107篇 |
综合类 | 13篇 |
预防医学 | 51篇 |
眼科学 | 1篇 |
药学 | 59篇 |
肿瘤学 | 72篇 |
出版年
2022年 | 7篇 |
2021年 | 25篇 |
2020年 | 8篇 |
2019年 | 12篇 |
2018年 | 18篇 |
2017年 | 11篇 |
2016年 | 13篇 |
2015年 | 20篇 |
2014年 | 25篇 |
2013年 | 42篇 |
2012年 | 38篇 |
2011年 | 46篇 |
2010年 | 45篇 |
2009年 | 48篇 |
2008年 | 44篇 |
2007年 | 50篇 |
2006年 | 39篇 |
2005年 | 37篇 |
2004年 | 29篇 |
2003年 | 21篇 |
2002年 | 30篇 |
2001年 | 32篇 |
2000年 | 26篇 |
1999年 | 22篇 |
1998年 | 41篇 |
1997年 | 46篇 |
1996年 | 38篇 |
1995年 | 37篇 |
1994年 | 16篇 |
1993年 | 24篇 |
1992年 | 10篇 |
1991年 | 21篇 |
1990年 | 23篇 |
1989年 | 24篇 |
1988年 | 25篇 |
1987年 | 27篇 |
1986年 | 19篇 |
1985年 | 21篇 |
1984年 | 7篇 |
1983年 | 12篇 |
1982年 | 13篇 |
1981年 | 6篇 |
1980年 | 12篇 |
1978年 | 8篇 |
1977年 | 8篇 |
1976年 | 10篇 |
1975年 | 10篇 |
1974年 | 5篇 |
1972年 | 4篇 |
1969年 | 4篇 |
排序方式: 共有1176条查询结果,搜索用时 0 毫秒
1.
Anela Stanic Denis Rybin Francis Cannata Carole Hohl Jennifer Brody Jessie Gaeta 《AIDS care》2021,33(1):1-9
ABSTRACT The lack of stable housing can impair access and continuity of care for patients living with human immunodeficiency virus (HIV). This study investigated the relationship between housing status assessed at multiple time points and several core HIV-related outcomes within the same group of HIV patients experiencing homelessness. Patients with consistently stable housing (CSH) during the year were compared to patients who lacked CSH (non-CSH group). The study outcomes included HIV viral load (VL), CD4 counts, and health care utilization. Multivariable and propensity weighted analyses were used to assess outcomes adjusting for potential group differences. Of 208 patients, 88 (42%) had CSH and 120 (58%) were non-CSH. Patients with CSH had significantly higher proportion of VL suppression and higher mean CD4 counts. The frequency of nurse visits in the CSH group was less than a half of that in the non-CSH group. Patients with CSH were less likely to be admitted to the medical respite facility, and if admitted, their length of stay was about a half of that for the non-CSH group. Our study findings show that patients with CSH had significantly better HIV virologic control and immune status as well as improved health care utilization. 相似文献
2.
3.
4.
5.
K. J. M. Panosian A. Lopez-Beltran G. A. Croghan J. F. Gaeta M. Gamarra 《World journal of urology》1989,7(3):173-177
Summary A total of 30 urinary bladder cytological specimens (urine and bladder washings) from 25 patients were reacted with a panel of 8 monoclonal antibodies predominantly derived from urinary bladder carcinoma, using avidin-biotin complex (ABC) immunohistochemical methodology. The clinical and epidemiological history of each of the patients evaluated was also revewed. A relatively high degree of sensitivity and specificity in the detection of malignancy was obtained in tests of urinary bladder cytological specimens with a combination of monoclonal antibodies. A role for monoclonal antibodies in the diagnosis of urinary bladder cytological specimens is discussed. 相似文献
6.
L. Ressia M.D. A.M. Grande M.D. R. Gaeta M.D. G. De Pieri M.D. M. Aiello M.D. M. Viganò M.D. 《Journal of cardiac surgery》1997,12(6):431-433
A bstract Eight patients (4 men, 4 women), mean age 51 years, referred to our Institution for left atrial myxoma underwent removal of the tumor through a superior transseptal approach. All patients in sinus rhythm with normal conduction time. The myxomas were localized in the fossa ovalis (3 cases), interatrial septum (2 cases), left appendage (2 cases), and mitral annulus (1 case). One patient died in hospital after emergency operation for low-output syndrome complicated by septic shock. All other patients had an uneventful postoperative course. Atrial arrhythmias did not represent a major postoperative complication. Transient PR interval elongation was occasionally seen. Electrophysiological studies showed normal sinus node function. At 6 months following operation, patients were evaluated with transeso-phageal echocardiography. There was no tumor recurrence. There were no episodes of arrhythmia in 24-hour electrocardiographic monitoring, and all patients were in NYHA Class I. We believe that the superior transseptal approach gives optimal exposure of the left atrial cavity, overcoming all difficulties related to a small left atrium which is an usual pattern in left atrial myxomas. 相似文献
7.
Polycystic kidney disease is an autosomal dominant disease that may be associated with cystic disease of the liver. In women, the cysts may develop early and be more troublesome than in men. Cystadenocarcinoma of the pancreas is uncommon, comprising 1% of primary pancreatic malignancies. This case report is the first to describe a familial association between polycystic kidney disease and cystadenocarcinoma of the pancreas and liver in the English medical literature. A patient with autosomal dominant polycystic kidney disease (ADPKD) and multiple hepatic cysts developed cystadenocarcinoma of the pancreas with multiple malignant liver cysts. The patient's mother, sister, and niece had ADPKD, and the patient's sister also died of pancreatic cystadenocarcinoma. We believe that the development of these two disease entities in which the primary pathology is cyst formation has a genetic association. (Gastroenterology 1997 Jun;112(6):2104-7) 相似文献
8.
9.
W. G. Hopkins H. Gaeta A. C. Thomas P. N. Hill 《European journal of applied physiology》1987,56(1):69-73
Summary Twenty-seven children (age 7–17 years) with varying degrees of blindness but with no other known disorder were assessed for physical fitness. Twenty-seven randomly selected children with normal eyesight were also assessed. Maximum oxygen uptake (
) was measured directly during a progressive exercise test on a treadmill. There was a significant and substantial reduction in
in totally blind children (mean ± standard deviation 35.0±7.5 ml · min–1 · kg–1) compared with normal children (45.9±6.6 ml · min–1 · kg–1). Partially sighted children had a significant but smaller reduction in
. Fitness assessed by a step-test was significantly reduced in the visually impaired children, and skin-fold thickness was also significantly greater in totally blind children.The level of habitual physical activity for each child, as assessed by a questionnaire, correlated with
(r=0.53,p<0.0001). Blind children were significantly less active than normal children, and the difference between mean
for blind and normal children became non-significant when their different activity levels were taken into account. It is concluded that totally blind children are less fit than other children at least partly because of their lower level of habitual activity. 相似文献
10.