全文获取类型
收费全文 | 3428篇 |
免费 | 214篇 |
国内免费 | 334篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 11篇 |
2020年 | 3篇 |
2019年 | 12篇 |
2018年 | 13篇 |
2017年 | 5篇 |
2016年 | 12篇 |
2015年 | 22篇 |
2014年 | 35篇 |
2013年 | 52篇 |
2012年 | 480篇 |
2011年 | 454篇 |
2010年 | 72篇 |
2009年 | 48篇 |
2008年 | 406篇 |
2007年 | 382篇 |
2006年 | 325篇 |
2005年 | 355篇 |
2004年 | 318篇 |
2003年 | 209篇 |
2002年 | 169篇 |
2001年 | 165篇 |
2000年 | 165篇 |
1999年 | 86篇 |
1998年 | 28篇 |
1997年 | 25篇 |
1996年 | 27篇 |
1995年 | 34篇 |
1994年 | 15篇 |
1993年 | 17篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1988年 | 3篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1980年 | 2篇 |
1976年 | 1篇 |
排序方式: 共有3976条查询结果,搜索用时 15 毫秒
1.
ZHENG LianBin LI YongLan XI HuanJiu YU KeLi LU ShunHua SHI Rui WEN YouFeng BAO JingPing ZHANG XingHua LI YuLing REN Fu XU GuoChang 《中国科学:生命科学英文版》2015,58(2):215-217,1,3
<正>Dear Editor,Shortly after initiating the"Physical Anthropological Research on Han Chinese"research project,we applied uniform sampling methods as well as methods and instruments of measurement to obtain a complete set of measurements of physical anthropological indicators among Han populations across China.Among these measurements,body stature was a key indicator.Currently,there should be reliable 相似文献
2.
<正>As one of the most deadly diseases,the outbreak of Ebola virus disease(EVD)is causing panic in West Africa and posing alarms globally.Since the re-emergence of EVD,China authority has been consistently providing support for Africa in its fight against Ebola.On September 16,2014,a laboratory testing team and a medical team,consisting of 59public health experts and medical staffers,were dispatched to assist local hospitals in West African countries to set up lab screening and clinical treatment of EVD(http://www.taiwan.cn/xwzx/Technology/201409/t20140917_7354545. 相似文献
3.
Hong Tang 《中国科学:生命科学英文版》2016,59(4):434-435
正How Ebola virus(EBOV)enters a host cell remains intriguingly mysterious to the public.Recently,a study led by George F Gao and his colleagues has unveiled how the primed glycoprotein on the envelope of EBOV binds to its endosomal receptor Niemann-Pick C1(NPC1)molecule during the process of virus membrane fusion with the host cells,an essential step for viral entry(Wang et al.,2016).This fine resolution of the viral glycoprotein with NPC1 at the atomic level sheds light on the development of therapeutic inhibitors against EBOV infection. 相似文献
4.
Li-Qing XIAO Ai-Hua LIU and Yong-Lian ZHANG State Key Laboratory of Molecular Biology Institute of Biochemistry Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Shanghai China 《Acta biochimica et biophysica Sinica》2004,(8)
Defensins are a family of evolutionarily relatedvertebrate antimicrobial peptides with a characteristicβ-sheet-rich fold and a framework of six disulphide-linkedcysteines. The two main defensin subfamilies, α- andβ-defensin, differ in the length of pep… 相似文献
5.
Yalin ZHANG 《昆虫分类学报》2013,35(1):81-81
由沈阳农业大学王小奇、方红、张治良教授主编的《辽宁甲虫原色图鉴》于2012年由辽宁科学技术出版社出版,以图鉴形式记述了分布于辽宁的鞘翅目昆虫71科829种,其中31个中国新记录种,124个辽宁省新记录种。全书分为两部分,第一部分是甲虫成虫的形态特征,简要概述了甲虫头、胸、腹部的外部形态特征;第二部分是分类,包括成虫的分科检索表和按科排列的各论部分。书 相似文献
6.
With support from many authors from many different scientific fields,Zoological Research(ZR)successfully released eight special issues from 2011 to 2014 on various topics,including Animal Ecology and Resources,Animal Genetic Diversity,Development and Evolution,Fish Diversity and Primates and Animal Models of Human Diseases.These special issues strongly align with our aims and scope,which have been 相似文献
7.
ZHANG Minzhao & KANG Le State Key Laboratory of Integrated Management of Pest Insects Rodents Institute of Zoology Chinese Academy of Sci-ences Beijing China 《中国科学:生命科学英文版》2005,48(6):551-564
The migratory locust, Locusta migratoria L., which is distributed widely in the East Hemisphere, has long been regarded as the most important agricultural pest and a model insect. Its distribution ranges from thetropic and the subtropical zone, to the temperate zone, and to the cold-temperate zone. Because of the wide geographical distribution and adaptations, many geo- graphical populations of the migratory locust dis- played apparent variation in morphology, life history, physiology, and ot… 相似文献
8.
Alien DNA introgression and wheat DNA rearrangements in a stable wheat line derived from the early generation of distant hybridization 总被引:2,自引:0,他引:2
ZHANG Lianquan LIU Dengcai YAN Zehong & ZHENG Youliang Triticeae Research Institute Sichuan Agricultural University Dujiangyan China 《中国科学:生命科学英文版》2005,48(5):424-433
In general, it requires five or more generations to develop a stable line by the traditional breeding method of cultivar hybrids in self-pollinated crops, such as wheat, barley, and rice. No doubt, the breeding period will be shortened and thus the breeding effi-ciency will be improved if the hybrids can stabilize in early generation. The method of haploid breeding, that is, obtaining stable pure lines (DH lines) of cultivar hybrids with the aid of anther culture and then chro-mosome doubling,… 相似文献
9.
ZHANG Hao FANG Yan HUANG Cuifen YANG Xiao & YE Qinong Beijing Institute of Biotechnology Beijing China 《中国科学:生命科学英文版》2005,48(3):270-276
Pescadillo was initially identified in a genetic screen for mutations that affect embryonic develop-ment of the zebrafish Daniorerio[1]. Pescadillo-/- ze-brafish mutants showed abnormal embryonic devel-opment such as reduced brain, eye size and a lack of extension of the jaw on developmental day 3. Further study showed that the Pescadillo protein is mainly distributed in tissues containing a significant number of proliferating cells and dramatically elevated in ma-lignant human astrocytomas an… 相似文献
10.
SUN Xiangqing * JIA Yanbin * ZHANG Xuegong XU Qi SHEN Yan & LI Yanda . Ministry of Education 《中国科学:生命科学英文版》2005,48(3):263-269
Schizophrenia is a serious neuropsychiatric illness affecting about 1% of the world’s population. Family, twin and adoption studies have demonstrated that 65%―85% of the susceptibility to schizophrenia can be attributed to genes. On the basis of genetic model-ing of epidemiological data and recent results of a number of whole-genome screens for susceptibility genes, schizophrenia has been considered a complex disorder. A number of genes with small to moderate effects are involved in combinat… 相似文献