全文获取类型
收费全文 | 1706篇 |
免费 | 91篇 |
国内免费 | 23篇 |
学科分类
医药卫生 | 1820篇 |
出版年
2022年 | 4篇 |
2021年 | 27篇 |
2020年 | 11篇 |
2019年 | 19篇 |
2018年 | 32篇 |
2017年 | 19篇 |
2016年 | 18篇 |
2015年 | 29篇 |
2014年 | 30篇 |
2013年 | 49篇 |
2012年 | 50篇 |
2011年 | 57篇 |
2010年 | 37篇 |
2009年 | 38篇 |
2008年 | 49篇 |
2007年 | 60篇 |
2006年 | 53篇 |
2005年 | 52篇 |
2004年 | 50篇 |
2003年 | 38篇 |
2002年 | 54篇 |
2001年 | 48篇 |
2000年 | 29篇 |
1999年 | 40篇 |
1998年 | 59篇 |
1997年 | 43篇 |
1996年 | 65篇 |
1995年 | 52篇 |
1994年 | 42篇 |
1993年 | 45篇 |
1992年 | 34篇 |
1991年 | 49篇 |
1990年 | 40篇 |
1989年 | 48篇 |
1988年 | 49篇 |
1987年 | 47篇 |
1986年 | 38篇 |
1985年 | 57篇 |
1984年 | 34篇 |
1983年 | 33篇 |
1982年 | 31篇 |
1981年 | 27篇 |
1980年 | 17篇 |
1979年 | 17篇 |
1978年 | 8篇 |
1977年 | 30篇 |
1976年 | 21篇 |
1975年 | 14篇 |
1969年 | 3篇 |
1967年 | 3篇 |
排序方式: 共有1820条查询结果,搜索用时 15 毫秒
1.
Acute and chronic renal failure in liver transplantation 总被引:9,自引:0,他引:9
We have performed a retrospective review of the incidence and etiologies of acute renal failure (ARF) in 105 adult patients receiving liver transplants. The prevalence of chronic renal failure was also determined. ARF occurred in 94.2% of these patients. Acute tubular necrosis was the leading cause of ARF and was associated with the highest mortality. Factors associated with increased mortality included: (1) peak serum creatinine greater than 3 mg/dl, (2) multiple liver transplants and (3) the need for dialysis. Pretransplant renal failure did not increase mortality. Chronic renal failure developed in 83% of patients at latest follow-up (mean: 30.5 +/- 7.9 months). 相似文献
2.
E McCauley G A Carlson R Calderon 《Journal of the American Academy of Child and Adolescent Psychiatry》1991,30(4):631-635
The question of whether somatic complaints are a significant feature of depression independent of anxiety was explored. Structured interview (Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children) and Child Behavior Checklist data from depressed and nondepressed psychiatric controls were analyzed to explore the interaction of somatic complaints, anxiety, and depression. Seventy percent of the children who met criteria for depression also had significant somatic complaints in contrast to 34% of the controls. Findings revealed that frequency of somatic complaints increased with severity of depression regardless of coexisting anxiety. 相似文献
3.
4.
Acute Cellular Rejection with CD20-Positive Lymphoid Clusters in Kidney Transplant Patients Following Lymphocyte Depletion 总被引:1,自引:0,他引:1
L. K. Kayler F. G. Lakkis C. Morgan A. Basu D. Blisard H. P. Tan J. McCauley C. Wu R. Shapiro P. S. Randhawa 《American journal of transplantation》2007,7(4):949-954
Lymphoid clusters (LC) containing CD20-positive B cells in kidney allografts undergoing acute cellular rejection (ACR) have been identified in small studies as a prognostic factor for glucocorticoid resistance and graft loss. Allograft biopsies obtained during the first episode of ACR in 120 recipients were evaluated for LC, immunostained with CD20 antibody, and correlated with conventional histopathologic criteria, response to treatment and outcome. LC were found in 71 (59%) of the 120 biopsies. All contained CD20 positive B cells that accounted for 5-90% of the LC leukocyte content. The incidence of LC was highest in the patients who had no lymphoid depletion or had been treated with Thymoglobulin preconditioning (79% vs. 75%, respectively) compared to 37% in patients pretreated with Campath (p = 0.0001). Banff 1a/1b ACR were more frequent in the LC-positive than the LC-negative group (96% vs. 80%, respectively; p = 0.0051). With a posttransplant follow-up of 953 +/- 430 days, no significant differences were detected between LC-postitive and LC-negative groups in time to ACR, steroid resistance, serum creatinine and graft loss. CD20+LC did not portend glucocorticoid resistance or worse short to medium term outcomes. CD20+LC may represent a heterogenous collection in which there may be a small still to be fully defined unfavorable subgroup. 相似文献
5.
Society is currently on the threshold of a new revolution in understanding the interaction of genes and the environment. This research has profound implications for understanding occupational disease and will present ethical challenges to occupational health practice. The public must be educated about the potential promise, as well as the threats, posed by emerging genetic technologies. 相似文献
6.
7.
Sung-Eun Kong Lewis R. Blennerhassett Kathryn A. Heel Rosalie D. McCauley John C. Hall 《ANZ journal of surgery》1998,68(8):554-561
Ischaemia-reperfusion injury (IRI) is of obvious relevance in situations where there is an interruption of blood supply to the gut, as in vascular surgery, or in the construction of free intestinal grafts. It is now appreciated that IRI also underlies the gut dysfunction that occurs in early shock, sepsis, and trauma. The events that occur during IRI are complex. However, recent advances in cellular biology have started to unravel these underlying processes. The aim of this review is to provide an outline of current knowledge on the mechanisms and consequences of IRI. Initially, IRI appears to be mediated by reactive oxygen metabolites and, at a later stage, by the priming and activation of polymorphonuclear neutrophils (PMN). Ischaemia-reperfusion injury can diminish the barrier function of the gut, and can promote an increase in the leakage of molecules (intestinal permeability) or the passage of microbes across the wall of the bowel (bacterial trans-location). Ischaemia-reperfusion injury to the gut can result in the generation of molecules that may also harm distant tissues. 相似文献
8.
9.
10.