全文获取类型
收费全文 | 1259篇 |
免费 | 186篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 20篇 |
儿科学 | 52篇 |
妇产科学 | 20篇 |
基础医学 | 87篇 |
口腔科学 | 38篇 |
临床医学 | 207篇 |
内科学 | 276篇 |
皮肤病学 | 104篇 |
神经病学 | 39篇 |
特种医学 | 132篇 |
外科学 | 188篇 |
综合类 | 96篇 |
现状与发展 | 30篇 |
预防医学 | 54篇 |
眼科学 | 15篇 |
药学 | 32篇 |
中国医学 | 3篇 |
肿瘤学 | 70篇 |
出版年
2024年 | 18篇 |
2023年 | 179篇 |
2022年 | 12篇 |
2021年 | 16篇 |
2020年 | 55篇 |
2019年 | 21篇 |
2018年 | 52篇 |
2017年 | 45篇 |
2016年 | 39篇 |
2015年 | 55篇 |
2014年 | 84篇 |
2013年 | 61篇 |
2012年 | 26篇 |
2011年 | 32篇 |
2010年 | 76篇 |
2009年 | 88篇 |
2008年 | 32篇 |
2007年 | 52篇 |
2006年 | 19篇 |
2005年 | 17篇 |
2004年 | 11篇 |
2003年 | 16篇 |
2002年 | 15篇 |
2001年 | 10篇 |
2000年 | 13篇 |
1999年 | 25篇 |
1998年 | 35篇 |
1997年 | 49篇 |
1996年 | 42篇 |
1995年 | 35篇 |
1994年 | 29篇 |
1993年 | 34篇 |
1992年 | 7篇 |
1991年 | 7篇 |
1990年 | 9篇 |
1989年 | 22篇 |
1988年 | 20篇 |
1987年 | 14篇 |
1986年 | 4篇 |
1985年 | 11篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1982年 | 8篇 |
1981年 | 10篇 |
1980年 | 12篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 13篇 |
1975年 | 10篇 |
1974年 | 3篇 |
排序方式: 共有1463条查询结果,搜索用时 15 毫秒
961.
962.
MM Arias GM Alcaráz C. Bernal G. González 《Acta paediatrica (Oslo, Norway : 1992)》1997,86(10):1047-1051
A clinical trial was conducted in order to prove the efficacy of a solution containing 50 g/1 of plantain flour and 3. 5 g/1 of sodium chloride (NaCl) for the rehydration of children with acute diarrheal diseases. 121 children were given WHO-ORS (Group A) and 117 a plantain flour-based solution (Group B). Rehydration was successful in 85. 9% in Group A and 88. 0% in Group B ( p = 0. 634). Rehydration was completed in 5. 28 h (SD 1. 99) in Group A and in 4. 88 h (SD 2. 11) in Group B ( p = 0. 132). The average solution intake for rehydration was 24. 56ml/kg/h (SD 10. 12) in Group A and 21. 17ml/kg/h (SD 9. 35) in Group B ( p = 0. 00782). The mean stool output during rehydration was 8. 45g/kg/h (SD 9. 72) in Group A and 4. 69 g/kg/h (SD 4. 98) in Group B ( p = 0. 00053). Decrease in blood levels of sodium and potassium occurred in some children in group B. The plantain flour-based solution proved effective for the treatment of dehydration due to acute diarrheal diseases and should be considered as an alternative when standard WHO-ORS is not available. 相似文献
963.
964.
Development of virtual CT cholangiopancreatoscopy 总被引:15,自引:0,他引:15
Prassopoulos P; Raptopoulos V; Chuttani R; McKee JD; McNicholas MM; Sheiman RG 《Radiology》1998,209(2):570
965.
Background: A significant number of soldiers suffer serious injuries or die in the process of demining and a protective device is necessary in such operations. 相似文献
966.
967.
Preimplantation genetic diagnosis of chromosome balance in embryos from a patient with a balanced reciprocal translocation 总被引:4,自引:1,他引:3
Duplications or deletions are present in a high percentage of the gametes
produced by individuals carrying balanced translocations. Preimplantation
genetic diagnosis was used to examine chromosome balance in embryos from a
patient having a reciprocal translocation within the short arms of
chromosomes 5 and 8 (46,XX,t(5;8)(p13;p23)). This woman has two sisters
with the translocation unbalanced, resulting in a partial trisomy for
chromosome 5 and partial monosomy for chromosome 8 (46,XX,-8,
+der(8)t(5;8)(p13;p23)) with associated mental retardation and physical
abnormalities. The patient and her husband desired to have children without
the abnormal chromosome balance and wished to reduce the likelihood of
spontaneous abortion or need for therapeutic abortion. Fluorescence in-situ
hybridization (FISH) probes for the alpha-satellite region of chromosome 8
and for a region on the short arm of chromosome 5 (5p15.2) were tested
initially on lymphocytes from the patient and her sisters. The
hybridization signal for chromosome 5 was detected in the expected two
copies for the patient and three copies for the sisters in 87% of the
cells. Two hybridization signals for chromosome 8 were detected in 96% of
the cells from all individuals. Additional probe testing was done using
blastomeres from polyspermic embryos. The couple then proceeded with a
stimulated in- vitro fertilization (IVF) cycle and biopsies were done on 13
embryos at the 7-10-cell stage using a method of zona drilling and fluid
displacement. Diagnosis was possible on at least one blastomere for nine
embryos. Three embryos had nuclei with three hybridization signals for
chromosome 5, three had fewer than two signals for one or both chromosomes,
one was mosaic, and two had two signals for each chromosome. The latter
were transferred to the patient, but pregnancy was not achieved. The
results demonstrate that preimplantation genetic diagnosis for patients
with reciprocal translocations can be used to identify embryos having
normal chromosome balance. The potential advantages and limitations of this
approach are discussed.
相似文献
968.
969.
Background: Regional Trauma Centre in the northern India receives the mortal remains of all fallen soldiers for embalming. Non enemy action deaths during counter insurgency operations (CI Ops) were analysed for planning preventive measures. 相似文献
970.