全文获取类型
收费全文 | 2674篇 |
免费 | 200篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 34篇 |
儿科学 | 80篇 |
妇产科学 | 50篇 |
基础医学 | 373篇 |
口腔科学 | 46篇 |
临床医学 | 400篇 |
内科学 | 499篇 |
皮肤病学 | 26篇 |
神经病学 | 244篇 |
特种医学 | 61篇 |
外科学 | 319篇 |
综合类 | 35篇 |
一般理论 | 1篇 |
预防医学 | 383篇 |
眼科学 | 30篇 |
药学 | 115篇 |
中国医学 | 4篇 |
肿瘤学 | 180篇 |
出版年
2024年 | 10篇 |
2023年 | 52篇 |
2022年 | 35篇 |
2021年 | 92篇 |
2020年 | 60篇 |
2019年 | 109篇 |
2018年 | 105篇 |
2017年 | 67篇 |
2016年 | 67篇 |
2015年 | 85篇 |
2014年 | 96篇 |
2013年 | 115篇 |
2012年 | 227篇 |
2011年 | 196篇 |
2010年 | 95篇 |
2009年 | 69篇 |
2008年 | 141篇 |
2007年 | 144篇 |
2006年 | 138篇 |
2005年 | 158篇 |
2004年 | 150篇 |
2003年 | 117篇 |
2002年 | 109篇 |
2001年 | 27篇 |
2000年 | 19篇 |
1999年 | 31篇 |
1998年 | 25篇 |
1997年 | 13篇 |
1996年 | 18篇 |
1995年 | 26篇 |
1994年 | 14篇 |
1993年 | 14篇 |
1992年 | 19篇 |
1991年 | 20篇 |
1990年 | 27篇 |
1989年 | 23篇 |
1988年 | 26篇 |
1987年 | 16篇 |
1986年 | 11篇 |
1985年 | 8篇 |
1984年 | 10篇 |
1980年 | 6篇 |
1979年 | 8篇 |
1978年 | 9篇 |
1977年 | 5篇 |
1974年 | 6篇 |
1973年 | 7篇 |
1972年 | 8篇 |
1968年 | 7篇 |
1966年 | 7篇 |
排序方式: 共有2880条查询结果,搜索用时 15 毫秒
1.
Paula Cristina Galati Paula Garcia Chiarello Belinda Pinto Simões 《Nutrition and cancer》2016,68(1):86-93
Changes in resting energy expenditure (REE) of cancer patients vary depending on type of tumor, treatment time point and kind of treatment. Little is known about REE of acute leukemia adult patients after treatment, especially with results related to body weight or fat free mass (FFM). This study aimed to assess changes in REE of acute leukemia adult patients before and after the first remission induction. Evaluation of REE was performed by indirect calorimetry and predicted REE was calculated by Harris-Benedict equation. Weight and height were measured and compared to a control group of healthy individuals. FFM was assessed by bioelectrical impedance for adjusting REE values. We evaluated 18 patients and 26 healthy individuals. At diagnosis, patients presented REE, REE/weight, and REE/FFM higher than the controls. Reductions of REE, REE/weight, and REE/FFM were also observed in patients after the first cycle of chemotherapy. The predicted REE for the patients group showed significant lower value compared with measured REE. Before the first cycle of chemotherapy REE was increased but undergoes a reduction after treatment, reaching values similar to the controls. For predictive Harris-Benedict equation, stress factors should be added to avoid underestimation of REE before and after chemotherapy. 相似文献
2.
Prolidase deficiency is a rare autosomal recessive disorder characterized by cutaneous ulcers, facial dysmorphism, recurrent infections, and intellectual disability. We report a unique case of a 6‐year‐old boy with prolidase deficiency and Crohn's disease who presented with lower extremity ulcers. Cutaneous ulcers due to prolidase deficiency are historically resistant to treatment, and we report success with the novel use of topical tacrolimus. 相似文献
3.
Exposure to high pressure produces neurologic changes in humans which manifest as tremor, EEG changes, and convulsions. Since previous studies have implicated the involvement of the serotoninergic system in these symptoms, it was of interest to study serotonin release at high pressure. Synaptosomes isolated from guinea pig striatum were used to follow serotonin efflux at 68 ATA. The major observation was a decrease in [3H]serotonin release from depolarized striatal synaptosomes at 68 ATA. In view of the role of serotonin as an inhibitory neurotransmitter in this area, the observed decrease in synaptic release leads us to conclude that decreased serotoninergic activity in striatal neurons probably is contributing to the hyperexcitability associated with HPNS. 相似文献
4.
5.
6.
Belinda Joy Deal Rebecca A Fountain Carol Ann Russell-Broaddus Melinda Stanley-Hermanns 《Disaster Management & Response》2006,4(4):100-105
Hurricanes Katrina and Rita forced many individuals along the coast of Texas and Louisiana to seek shelter inland. Among the evacuees were residents with special needs and residents of nursing homes and group homes caring for mentally retarded and physically disabled persons. Many nurses volunteered to provide health care for those in need. This article discusses challenges and opportunities that were encountered by nurses volunteering in special-needs shelters. Issues related to human and physical resources, patient care, and confidentiality are discussed including lessons learned. As nurses who cared for evacuees in the shelter, it is hoped some of the lessons learned can be utilized in future disasters. 相似文献
7.
Theodore Colton Laurence Freedman Tony Johnson David MaChin 《Statistics in medicine》1989,8(6):639-639
8.
9.
Andrea J Fradkin Peter A Cameron Belinda J Gabbe 《Journal of Science and Medicine in Sport》2007,10(1):66-71
Golfing injuries have been shown to occur frequently, and injury countermeasures have been suggested to help reduce injury risk. Performing an appropriate warm-up is thought to reduce injury risk, however there is a lack of evidence to support this notion. Therefore this study aimed to investigate the relationships between warm-up participation and injury in a cohort of female golfers. A total of 522 golfers participating in the Victorian Women's Pennant Competition completed the study. Over one-third (35.2%) of the golfers reported having sustained a golfing injury within the previous 12 months, with the lower back the most commonly injured region. Most golfers reported not warming-up prior to play or practice. Golfers who reported not warming-up on a regular basis were more likely to have reported a golfing injury in the previous 12 months than those reporting frequent warm-up participation (OR=45.2; 95% CI: 13.5, 151.7). Less skilled golfers were also less likely to report sustaining a golfing injury than more skilled golfers (OR=0.2; 95% CI: 0.1, 0.5). This study is one of the few to establish an association between warm-up participation and injury. Further prospective studies are warranted to determine whether warm-up reduces injury risk for golf participation. 相似文献
10.