全文获取类型
收费全文 | 936篇 |
免费 | 55篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 40篇 |
妇产科学 | 5篇 |
基础医学 | 96篇 |
口腔科学 | 46篇 |
临床医学 | 79篇 |
内科学 | 184篇 |
皮肤病学 | 41篇 |
神经病学 | 30篇 |
特种医学 | 153篇 |
外国民族医学 | 1篇 |
外科学 | 125篇 |
综合类 | 39篇 |
预防医学 | 59篇 |
眼科学 | 5篇 |
药学 | 52篇 |
中国医学 | 1篇 |
肿瘤学 | 40篇 |
出版年
2021年 | 5篇 |
2020年 | 7篇 |
2019年 | 8篇 |
2018年 | 13篇 |
2017年 | 14篇 |
2016年 | 14篇 |
2015年 | 25篇 |
2014年 | 16篇 |
2013年 | 33篇 |
2012年 | 26篇 |
2011年 | 30篇 |
2010年 | 34篇 |
2009年 | 48篇 |
2008年 | 26篇 |
2007年 | 18篇 |
2006年 | 18篇 |
2005年 | 19篇 |
2004年 | 38篇 |
2003年 | 20篇 |
2002年 | 15篇 |
2001年 | 17篇 |
2000年 | 11篇 |
1999年 | 24篇 |
1998年 | 57篇 |
1997年 | 65篇 |
1996年 | 58篇 |
1995年 | 42篇 |
1994年 | 44篇 |
1993年 | 39篇 |
1992年 | 8篇 |
1991年 | 15篇 |
1990年 | 16篇 |
1989年 | 17篇 |
1988年 | 22篇 |
1987年 | 23篇 |
1986年 | 21篇 |
1985年 | 9篇 |
1984年 | 4篇 |
1983年 | 8篇 |
1982年 | 18篇 |
1981年 | 3篇 |
1980年 | 9篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1977年 | 5篇 |
1976年 | 6篇 |
1970年 | 2篇 |
1968年 | 3篇 |
1965年 | 2篇 |
1959年 | 2篇 |
排序方式: 共有1001条查询结果,搜索用时 0 毫秒
141.
142.
143.
144.
145.
146.
Measurements of T1 and T2 relaxation values and spin density of the lumbar vertebral bone marrow were performed in 212 patients, and the results were correlated with the patients' age and sex. T1 and T2 relaxation times for bone marrow in the lumbar vertebral bodies showed a progressive decrease with age for both sexes (except for the T2 relaxation values in female patients). The replacement of hematopoietic marrow by fatty marrow could explain the decrease in T1 and T2. The T1 and T2 values were in the same range for the first two age groups (age 1-10 years and age 21-40 years) and became slightly greater for the older female patients (age 51 years and older) than for the older males. This could be due to the loss of bone and mineral content, which is more rapid and significant for women. These normal T1 and T2 values may provide a baseline for future evaluation of diseases involving the lumbar spine. 相似文献
147.
148.
149.
Arun Kumar.S.Bilodi S. Bilodi MR Gangadhar 《Journal of the Anatomical Society of India》2012,61(2):214-220
Hereditary ectodermal dysplasia is a group of disorder running in the family where more than one manifestation occurs involving skin, nail, hair, glands and teeth In the present study, five cases were detected in district of Bangalore,Karnataka and studied in detail. Out of them three were girls and two boys showing manifestation dysplasia of teeth, skin & sweat glands between the age groups of 5 years to 14 years of age. There are three girls between 5 to 18 years showing oligodentia (0.13%) in 2 girls and anodentia in one girl (0.67%) associated with periorbital wrinkling and mild mid facial hypoplasia.The other 2 were boys between 8years and 15 years of age showed oligodentia, anhydosis brittle nails with vertical ridges, and 15 years old boy also showed periorbital wrinkling. The mothers of these five patients were also studied. Consanguity along with heredity and hypertension has played a vital role in the development of ectodermal dysplasia These 5 cases were compared and correlated with available literatures. 相似文献
150.
Hamady Dieng Rahman GM Saifur Abu Hassan Ahmad MR Che Salmah Al Thbiani Aziz Tomomitsu Satho Fumio Miake Zairi Jaal Sazaly Abubakar Ronald Enrique Morales 《Asian Pacific Journal of Tropical Biomedicine》2012,2(3):228-232