全文获取类型
收费全文 | 36351篇 |
免费 | 2227篇 |
国内免费 | 110篇 |
专业分类
耳鼻咽喉 | 321篇 |
儿科学 | 1166篇 |
妇产科学 | 1012篇 |
基础医学 | 4954篇 |
口腔科学 | 616篇 |
临床医学 | 5932篇 |
内科学 | 6597篇 |
皮肤病学 | 617篇 |
神经病学 | 3453篇 |
特种医学 | 620篇 |
外科学 | 3136篇 |
综合类 | 403篇 |
一般理论 | 55篇 |
预防医学 | 4547篇 |
眼科学 | 468篇 |
药学 | 2164篇 |
中国医学 | 68篇 |
肿瘤学 | 2559篇 |
出版年
2023年 | 198篇 |
2022年 | 382篇 |
2021年 | 780篇 |
2020年 | 460篇 |
2019年 | 780篇 |
2018年 | 899篇 |
2017年 | 621篇 |
2016年 | 655篇 |
2015年 | 839篇 |
2014年 | 1176篇 |
2013年 | 1788篇 |
2012年 | 2657篇 |
2011年 | 2815篇 |
2010年 | 1535篇 |
2009年 | 1290篇 |
2008年 | 2543篇 |
2007年 | 2549篇 |
2006年 | 2572篇 |
2005年 | 2391篇 |
2004年 | 2314篇 |
2003年 | 2187篇 |
2002年 | 2046篇 |
2001年 | 224篇 |
2000年 | 155篇 |
1999年 | 300篇 |
1998年 | 413篇 |
1997年 | 367篇 |
1996年 | 329篇 |
1995年 | 281篇 |
1994年 | 273篇 |
1993年 | 258篇 |
1992年 | 172篇 |
1991年 | 138篇 |
1990年 | 137篇 |
1989年 | 133篇 |
1988年 | 107篇 |
1987年 | 115篇 |
1986年 | 90篇 |
1985年 | 107篇 |
1984年 | 155篇 |
1983年 | 157篇 |
1982年 | 194篇 |
1981年 | 170篇 |
1980年 | 161篇 |
1979年 | 95篇 |
1978年 | 75篇 |
1977年 | 81篇 |
1976年 | 60篇 |
1975年 | 53篇 |
1974年 | 69篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
The occupational health nurse can play an important role in supporting employees with CKD and ESRD by recognizing risk factors such as diabetes and hypertension associated with CKD. The occupational health nurse should encourage compliance with treatment regimens that retard or delay progression of kidney disease into the next stage, especially blood pressure and glucose control. When employees are in need of diagnostic testing, the occupational health nurse can describe the testing procedures such as laboratory values, ultrasounds, and biopsies, and explain the five stages of CKD. The occupational health nurse can assist employees in Stage 4 or 5 CKD in deciding on a treatment option modality that best suits their individual lifestyles, after they have seen a nephrologist and kidney patient educator. In addition, the occupational health nurse can guide employees with difficult lifestyle changes and provide support during the adjustment process. The occupational health nurse also can play a key role in facilitating and coordinating those changes with the renal social worker. Together they can explore available resources, such as the NKF, the American Association of Kidney Patients, and kidneydirections.com. See the Sidebar on pages 295 to 296 for other available resources. Kidney disease can be a devastating diagnosis. Support and education are key to a successful lifestyle transition. Employees who have CKD and work with an occupational health nurse who is informed about their disease and its stages of progression can benefit from educational processes that create informed choices to delay or retard the progression of their renal disease. 相似文献
72.
73.
Patricia Grabowski Hans Scherübl 《Journal of clinical oncology》2005,23(21):4795-6; author reply 4796-7
74.
75.
76.
77.
78.
79.
Postoperative radiotherapy for locally advanced colon cancer 总被引:1,自引:0,他引:1
Dr. E. Henry Amos MD William M. Mendenhall MD Patricia J. McCarty BA John O. Gage MD J. Logan Emlet MD Gerald C. Lowrey MD Craig A. Peterson MD Warren R. Amos MD 《Annals of surgical oncology》1996,3(5):431-436
Background: The role of adjuvant postoperative radiotherapy for locally advanced colon cancer is not well documented.
Methods: Seventy-eight patients who underwent a complete resection of B2-C colon cancer received postoperative radiotherapy. Twenty-eight
patients received ⩽45 Gy; 50 patients received 50–55 Gy. Twenty-seven patients received adjuvant fluorouracil-based chemotherapy.
All patients were followed for a minimum of 3 years; no patients were lost to follow-up.
Results: The overall local control rate was 88%. The 5-year actuarial rate of local control was 96% after 50–55 Gy postoperative radiotherapy
compared with 76% after <50 Gy (p=0.0095). Multivariate analysis of local control showed that only radiotherapy dose significantly
influenced this end point. Cause-specific survival rates at 5 years were B2, 67%; B3, 90%; C1, 100%; C2, 61%; C3, 36%; and
overall, 63%. Multivariate analysis of cause-specific survival showed that only stage significantly influenced this end point.
Bowel obstruction caused by adhesions developed in three patients and required a laparotomy; radiation-induced sarcoma developed
in one additional patient.
Conclusions: Postoperative radiotherapy appears to reduce the risk of local recurrence in patients with locally advanced colon cancer.
The optimal dose is probably 50–55 Gy at 1.8 Gy per fraction. Postoperative radiotherapy may improve cause-specific survival
for patients with stages B3 and C2 cancers. 相似文献
80.