全文获取类型
收费全文 | 1703篇 |
免费 | 91篇 |
国内免费 | 9篇 |
专业分类
耳鼻咽喉 | 28篇 |
儿科学 | 129篇 |
妇产科学 | 39篇 |
基础医学 | 202篇 |
口腔科学 | 51篇 |
临床医学 | 118篇 |
内科学 | 352篇 |
皮肤病学 | 55篇 |
神经病学 | 70篇 |
特种医学 | 101篇 |
外科学 | 282篇 |
综合类 | 105篇 |
预防医学 | 67篇 |
眼科学 | 42篇 |
药学 | 88篇 |
中国医学 | 4篇 |
肿瘤学 | 70篇 |
出版年
2023年 | 9篇 |
2022年 | 19篇 |
2021年 | 34篇 |
2020年 | 23篇 |
2019年 | 46篇 |
2018年 | 44篇 |
2017年 | 40篇 |
2016年 | 30篇 |
2015年 | 45篇 |
2014年 | 66篇 |
2013年 | 68篇 |
2012年 | 94篇 |
2011年 | 87篇 |
2010年 | 81篇 |
2009年 | 70篇 |
2008年 | 84篇 |
2007年 | 80篇 |
2006年 | 77篇 |
2005年 | 79篇 |
2004年 | 60篇 |
2003年 | 62篇 |
2002年 | 47篇 |
2001年 | 53篇 |
2000年 | 45篇 |
1999年 | 48篇 |
1998年 | 49篇 |
1997年 | 27篇 |
1996年 | 30篇 |
1995年 | 18篇 |
1994年 | 24篇 |
1993年 | 21篇 |
1992年 | 14篇 |
1991年 | 18篇 |
1990年 | 11篇 |
1989年 | 18篇 |
1988年 | 30篇 |
1987年 | 9篇 |
1986年 | 15篇 |
1985年 | 19篇 |
1984年 | 12篇 |
1983年 | 6篇 |
1982年 | 8篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1977年 | 5篇 |
1976年 | 7篇 |
1975年 | 9篇 |
1974年 | 12篇 |
1973年 | 7篇 |
1970年 | 5篇 |
排序方式: 共有1803条查询结果,搜索用时 15 毫秒
81.
Jeffrey J. Hsu Pryce Gaynor Megan Kamath Ashley Fan Farah Al‐Saffar Daniel Cruz Ali Nsair 《American journal of transplantation》2020,20(7):1911-1915
The severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) is rapidly infecting people worldwide, resulting in the infectious disease coronavirus disease 19 (COVID‐19) that has been declared a pandemic. Much remains unknown about COVID‐19, including its effects on solid organ transplant (SOT) recipients. Given their immunosuppressed state, SOT recipients are presumed to be at high risk of complications with viral infections such as SARS‐CoV‐2. Limited case reports in single SOT recipients, however, have not suggested a particularly severe course in this population. In this report, we present a dual‐organ (heart/kidney) transplant recipient who was found to have COVID‐19 and, despite the presence of a number of risk factors for poor outcomes, had a relatively mild clinical course. 相似文献
82.
Till Orla Klatte MD Daniel Kendoff Reza SabihiAtul F. Kamath MD Johannes M. Rueger Thorsten Gehrke 《The Journal of arthroplasty》2014
During the one-stage exchange procedure for periprosthetic joint infection (PJI) after total hip arthroplasty (THA), acetabular defects challenge reconstructive options. Porous tantalum augments are an established tool for addressing acetabular destruction in aseptic cases, but their utility in septic exchange is unknown. This retrospective case–control study presents the initial results of tantalum augmentation during one-stage exchange for PJI. Primary endpoints were rates of re-infection and short-term complications associated with this technique. Study patients had no higher risk of re-infection with equivalent durability at early follow-up with a re-infection rate in both groups of 4%. In conclusion, tantalum augments are a viable option for addressing acetabular defects in one-stage exchange for septic THA. Further study is necessary to assess long-term durability when compared to traditional techniques for acetabular reconstruction. 相似文献
83.
Amun Makani Tae Won B. Kim Atul F. Kamath Jonathan P. Garino Gwo-Chin Lee 《The Journal of arthroplasty》2014
The purpose of this study was to evaluate the outcome of femoral component revisions using a long tapered HA coated femoral revision stem. Between 2001 and 2008, 55 femoral component revisions were performed using this stem. Forty-one patients were available for follow up evaluation at average of 59 months. The clinical results were evaluated using the HHS and serial radiographs were evaluated for loosening. The mean HHS was 71 (range 22–100). Three hips required revision of KAR stem (1 aseptic loosening, 1 infection, 1 limb length discrepancy). Only one prosthesis demonstrated radiographic evidence of subsidence. Our study suggests that long tapered HA coated revision femoral components can provide stable fixation and in-growth in cases where there is good proximal femoral bone stock and favorable canal geometry. 相似文献
84.
Hassan AloshAtul F. Kamath MD Keith D. BaldwinMaryAnn Keenan MD Gwo-Chin Lee 《The Journal of arthroplasty》2014
Patients with spasticity and hip arthritis can present challenges to treatment. This investigation evaluated the effectiveness and safety of THA in patients with upper motor neuron disease. Twenty-seven consecutive patients with history of cerebral palsy (CP) or acquired spasticity (AS) underwent 30 THAs for treatment of hip arthritis. They were followed for an average 2.5 years (range 2.1–12.1). Patients with CP were more likely to require hip adductor release and hip flexor lengthening at the time of THA. Statistically significant improvements were made in Harris Hip Scores, pain scores, range of motion, ambulatory status, and the use ambulatory-assistive devices. There were no dislocations in this group. Patients with spasticity can benefit from THA in terms of pain relief and improved mobility with relatively low complications. 相似文献
85.
86.
87.
Kamath Amita Roudenko Alexandra Hecht Elizabeth Sirlin Claude Chernyak Victoria Fowler Kathryn Mitchell Donald G. 《Abdominal imaging》2019,44(4):1306-1322
Abdominal Radiology - Unique among solid organ tumors, hepatocellular carcinoma (HCC), may be diagnosed by imaging alone, without the need for biopsy. The Liver Imaging Reporting and Data System... 相似文献
88.
89.
Oxidative metabolism of the human eosinophil 总被引:14,自引:1,他引:14
We have compared the oxidative metabolism of human eosinophils (80%-90% purity) to that of neutrophils. Hexose monophosphate (HMP) shunt activity of eosinophils was higher than that of neutrophils under either resting or phagocytizing conditions. Eosinophil HMP shunt activity also was stimulated by phorbol myristate acetate, a membrane- active agent. Eosinophils showed a marked incorporation of 125I into trichloroacetic acid-insoluble material under resting conditions, which increased markedly during phagocytosis. Eosinophils likewise showed a greater reduction of nitroblue tetrazolium dye during phagocytosis than did neutrophils. Measurement of other parameters of oxidative metabolism indicated that eosinophils generated superoxide anion following phagocytosis and also elicited a burst of chemiluminescence similar to that observed during phagocytosis by neutrophils. Measurement of NADPH oxidase activity demonstrated that this enzyme was 3-6 times more active in fractions isolated from eosinophils than in corresponding fractions isolated from neutrophils; this was observed over a range of substrate concentrations. The eosinophil enzyme sedimented differently than the neutrophil enzyme with differential centrifugation; neither showed sedimentation characteristics of peroxidase. These data indicate that eosinophils possess a similar, although in some ways more potent, oxidative burst than neutrophils and are consistent with a role for NADPH oxidase in the initiation of that burst. 相似文献
90.
MELD score as a predictor of pretransplant and posttransplant survival in OPTN/UNOS status 1 patients 总被引:12,自引:0,他引:12
Kremers WK van IJperen M Kim WR Freeman RB Harper AM Kamath PS Wiesner RH 《Hepatology (Baltimore, Md.)》2004,39(3):764-769
The Model for End-Stage Liver Disease (MELD) score is predictive of survival and is used to prioritize patients with chronic liver disease patients for orthotopic liver transplantation (OLT). The aims of this study are (1) to assess the ability of MELD score at listing to predict pretransplant and posttransplant survival for nonchronic liver disease patients listed with the Organ Procurement and Transplantation Network/ United Network for Organ Sharing (OPTN/UNOS) as Status 1; and (2) to compare survival associated with 4 diagnostic groups within the Status 1 designation. The study population consisted of adult patients listed for OLT at Status 1 in the UNOS national database between November 1, 1999 and March 14, 2002 (N = 720). Events within 30 days of listing were analyzed using Kaplan-Meier and Cox regression methodology. Patients meeting criteria for fulminant hepatic failure without acetaminophen toxicity (FHF-NA, n = 312) had the poorest survival probability while awaiting OLT; this was negatively correlated with MELD score (P =.0001). These patients experienced the greatest survival benefit associated with OLT, with an estimated improvement of survival from about 58% to 91% (P <.0001). Patients listed for primary nonfunction within 7 days of OLT (n = 268) did not show mortality to be related to MELD score (P =.41) and did not show a significant association between survival and OLT (P =.68). In conclusion, liver allocation within the Status 1 designation may need to be further stratified by diagnosis, and MELD score may be useful for prioritizing FHF-NA candidates. 相似文献