Results 91 to 100 of about 1,569,745 (105)

草型湖泊资源、环境与渔业生态学管理(一)

open access: yes, 1995
本文集重点介绍1991-1994年开展的国家“八五”水产科技攻关课题“小型草型湖泊渔业综合高产技术研究”所取得的部分研究成果。保安湖和西凉湖是长江中游颇具代表性的草型湖泊。文集对两湖近期的资源、环境、渔产潜力、鱼草关系、渔业优化模式及名优水产增养殖技术作了系统研究。重点论述了草鱼-水草动态关系和优质高产高效渔业模式 ...
刘伙泉, 梁彦龄
core  

[Analysis of clinical features of vestibular migraine]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2020
Duan F   +5 more
europepmc   +1 more source

长期围栏封育对中天山草地植物群落特征及多样性的影响/Effects of enclosure on plant diversity and community characteristics in pasture of Middle Tianshan Mountain[J]

open access: yes, 2012
以中科院新疆巴音布鲁克草原生态站25年围封样地为对象,研究亚高山草原、亚高山草原化草甸和亚高山草甸化草原的植物群落特征及物种多样性。结果表明,长期围封对3种草地类型草地植被盖度、平均高度、地上生物量均有不同程度的提高,围栏内生物量与植株高度均表现为亚高山草原化草甸〉亚高山草甸化草原〉亚高山草原;3种草地类型围栏内外生物量和植被盖度差异呈极显著(P〈0.01),且亚高山草原化草甸和亚高山草甸化草原围栏内外植物高度差异极显著(P〈0.01)。围封25年后,围栏外的群落丰富度指数和优势度指数均高于围栏内 ...
苏建红   +8 more
core  

[Chinese Expert Consensus on Perioperative Pulmonary Rehabilitation Training 
for Lung Cancer]. [PDF]

open access: yesZhongguo Fei Ai Za Zhi
Lung Cancer Specialty Committee of Chinese Elderly Health Care Association   +2 more
europepmc   +1 more source

[Clinical study on blocking mother-to-child transmission of hepatitis B virus with high viral load and HBeAg positivity during pregnancy in Guizhou province]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi, 2018
Zhang BF   +9 more
europepmc   +1 more source

[Characteristics of IgH-CDR3 repertoire of peripheral B cells in a patient with primary biliary cholangitis: a preliminary study using high-throughput sequencing]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi, 2017
Zhao DT   +9 more
europepmc   +1 more source

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