全文获取类型
收费全文 | 513篇 |
免费 | 33篇 |
国内免费 | 45篇 |
专业分类
儿科学 | 39篇 |
妇产科学 | 2篇 |
基础医学 | 44篇 |
口腔科学 | 13篇 |
临床医学 | 86篇 |
内科学 | 119篇 |
皮肤病学 | 8篇 |
神经病学 | 23篇 |
特种医学 | 129篇 |
外科学 | 25篇 |
综合类 | 16篇 |
预防医学 | 16篇 |
眼科学 | 6篇 |
药学 | 49篇 |
中国医学 | 1篇 |
肿瘤学 | 15篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 4篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2015年 | 4篇 |
2014年 | 9篇 |
2013年 | 13篇 |
2012年 | 4篇 |
2011年 | 5篇 |
2010年 | 24篇 |
2009年 | 22篇 |
2008年 | 8篇 |
2007年 | 34篇 |
2006年 | 7篇 |
2005年 | 8篇 |
2004年 | 5篇 |
2003年 | 7篇 |
2002年 | 4篇 |
2001年 | 5篇 |
2000年 | 9篇 |
1999年 | 11篇 |
1998年 | 42篇 |
1997年 | 33篇 |
1996年 | 37篇 |
1995年 | 24篇 |
1994年 | 17篇 |
1993年 | 21篇 |
1992年 | 12篇 |
1991年 | 9篇 |
1990年 | 15篇 |
1989年 | 31篇 |
1988年 | 33篇 |
1987年 | 23篇 |
1986年 | 19篇 |
1985年 | 15篇 |
1984年 | 8篇 |
1983年 | 10篇 |
1982年 | 9篇 |
1981年 | 6篇 |
1980年 | 7篇 |
1979年 | 2篇 |
1978年 | 6篇 |
1977年 | 11篇 |
1976年 | 5篇 |
1975年 | 5篇 |
1967年 | 1篇 |
排序方式: 共有591条查询结果,搜索用时 15 毫秒
91.
OBJECTIVES: We aim to introduce Piaget's concept of 'operational knowledge'
from the cognitive theory of learning--as a contribution to the broader
understanding of clinical interaction. METHOD: Our study involves a
theoretical presentation of different kinds and levels of human
understanding, illustrated by a case story in which the difference between
operational and figurative knowledge was demonstrated. This study used the
case story of a male patient aged 80, who was suffering from ulcerative
colitis. We appealed to the reader's perceived relevance of these
perspectives, in order to understand what was going on between doctor and
patient. RESULTS: The case story demonstrates the phenomenon of operational
knowledge in the patient, the close links between communicative action and
cognitive understanding, and the importance for the doctor of reflecting
upon this level of interaction. CONCLUSION: According to the
patient-centred clinical method, the doctor should explore the social and
emotional context of the patient in order to understand the meaning of the
illness. We suggest that a cognitive dimension should also be added, and
that the concept of 'operational knowledge' might be useful for such
investigations.
相似文献
92.
93.
94.
95.
MCF-7 human breast cancer cells that were treated for one hour prior to X irradiation with the cyclic AMP-inducing agent 1-methyl-3-isobutylxanthine displayed a slight but significant increase in surviving fraction over untreated controls at each radiation dose level. This was accompanied by a two-fold increase in the level of intracellular cyclic AMP. 相似文献
96.
The variable appearance of the left superior intercostal vein 总被引:1,自引:0,他引:1
97.
Preliminary experimental results in humans and animals with a superconducting, whole-body, nuclear magnetic resonance scanner 总被引:3,自引:0,他引:3
98.
99.
100.
MA Rafiq M Ansar CR Marshall A Noor N Shaheen A Mowjoodi MA Khan G Ali M Amin‐ud‐Din L Feuk JB Vincent SW Scherer 《Clinical genetics》2010,78(5):478-483
Rafiq MA, Ansar M, Marshall CR, Noor A, Shaheen N, Mowjoodi A, Khan MA, Ali G, Amin‐ud‐Din M, Feuk L, Vincent JB, Scherer SW. Mapping of three novel loci for non‐syndromic autosomal recessive mental retardation (NS‐ARMR) in consanguineous families from Pakistan. To date, of 13 loci with linkage to non‐syndromic autosomal recessive mental retardation (NS‐ARMR), only six genes have been established with associated mutations. Here we present our study on NS‐ARMR among the Pakistani population, where people are traditionally bound to marry within the family or the wider clan. In an exceptional, far‐reaching genetic survey we have collected more than 50 consanguineous families exhibiting clinical symptoms/phenotypes of NS‐ARMR. In the first step, nine families (MR2‐9 and MR11) with multiple affected individuals were selected for molecular genetic studies. Two families (MR3, MR4) showed linkage to already know NS‐ARMR loci. Fifteen affected and 10 unaffected individuals from six (MR2, MR6, MR7, MR8, MR9 and MR11) families were genotyped by using Affymetrix 5.0 or 6.0 single‐nucleotide polymorphism (SNP) microarrays. SNP microarray data was visually inspected by dChip and genome‐wide homozygosity analysis was performed by HomozygosityMapper. Additional mapping was performed (to exclude false‐positive regions of homozygosity called by HomozygosityMapper and dChip) on all available affected and unaffected members in seven NS‐ARMR families, using microsatellite markers. In this manner we were able to map three novel loci in seven different families originating from different areas of Pakistan. Two families (MR2, MR5) showed linkage on chromosome 2p25.3‐p25.2. Three families (MR7, MR8, and MR9) that have been collected from the same village and belong to the same clan were mapped on chromosome 9q34.3. MR11 maps to a locus on 9p23‐p13.3. Analysis of MR6 showed two positive loci, on chromosome 1q23.2‐q23.3 and 8q24.21‐q24.23. Genotyping in additional family members has so far narrowed, but not excluded the 1q locus. In summary, through this study we have identified three new loci for NS‐ARMR, namely MRT14, 15 and 16. 相似文献