Results 111 to 120 of about 2,430 (164)

环境条件对麻纤维地膜降解及其土壤微生物量和酶活性的影响

Shuitu Baochi Xuebao, 2019
通过设置不同土壤pH、施氮量、季节和作物种植的土壤环境条件，采用盆栽埋袋试验方法研究麻纤维地膜的降解规律变化，并分析其与土壤微生物生物量及酶活性的关系。结果表明：麻纤维地膜的降解过程均服从Olson衰减模型（R2=0.689~0.996 ...
龙世方, 朱奇宏, 周建利, 黄道友, 刘波, 吕光辉, 段明梦   +6 more
doaj  

高原鼠兔繁殖季节血液指标、血气及性激素变化

野生动物学报, 2017
2014年5月至2014年10月间,在青海省海北自治州祁连县野牛沟乡达玉村附近,从动态的角度研究高原鼠兔在其生境地繁殖季节前后血常规、血气和性激素的变化,并与繁殖期间的各种环境因子相关联,探讨鼠兔繁殖策略对环境及行为的响应。结果表明,可将该地区高原鼠兔的繁殖期分为过渡恢复阶段(5月以前); 繁殖旺盛阶段(5月下旬～7月中旬); 繁殖抑制阶段(7月下旬～9月下旬); 繁殖静止阶段(10月及10月以后)4个阶段,不同的繁殖阶段高原鼠兔在体重、繁殖指数、血常规指标、血气指标、睾丸相对重量 ...
谢惠春 罗巧玉 陈 志 马永贵
doaj  

[Epidemiological characteristics of respiratory syncytial virus infection in children in Hebei Province]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wang X, Lu SK, Liu JH, Shuai JF, Huang KL, Niu B, Cao LJ, Cui XW.   +7 more
europepmc   +1 more source

甲型H1N1流感病毒神经氨酸酶基因遗传进化分析

Zhongshan Daxue xuebao. Yixue kexue ban, 2010
【目的】 了解季节性H1N1流感病毒与2009年新型H1N1流感病毒神经氨酸酶(NA)基因的遗传进化关系,探讨甲型H1N1流感病毒的遗传变异规律65377;【方法】 分别从2006年和2009年流感病人标本中分离并鉴定出季节性HIN1流感病毒和新型H1N1流感病毒,用RT-PCR技术扩增了病毒NA基因全序列,并对其分子进化和重要功能位点的遗传变异进行了分析65377; 【结果】 2009年新型H1N1流感病毒与2006年季节性HIN1流感病毒比较,NA基因的同源性较低(77.9% ~ 78.8 ...
doaj  

[Bacterial Infection Spectrum and Antimicrobial Resistance in 2850 Cases of Community-Acquired Pneumonia in Children]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zhong M, Xie J, Wang H, Fan J, Li M, Zou F, Li L.   +6 more
europepmc   +1 more source

[Causal relationship between <i>Helicobacter pylori</i> infection and childhood immune thrombocytopenia and influencing factors for prognosis]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zhou XY, Yan M, Yue YB, Nuriddin H, Wang XM, Cheng YF, Wu CC, Liu Y.   +7 more
europepmc   +1 more source

[Clinical characteristics of allergic rhinitis induced by pollen in northern China]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
He S, Chen L, Ming W, Wang X, Wang H, Wang X.   +5 more
europepmc   +1 more source

[Epidemiological characteristics of human metapneumovirus and risk factors for severe pneumonia in hospitalized children]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wang YX, Lu SK, Huang KL, Cao LJ, Chu YJ, Niu B.   +5 more
europepmc   +1 more source

[Comprehensive considerations for the diagnosis, treatment, and management of osteogenesis imperfecta]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lyu XH, Dong J.
europepmc   +1 more source

[Temporal changes of chronic postsurgical pain in mice: the regulatory role of CX3CL1 in the dorsal root ganglion]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhao B, Lü Z, Ji D, Tian S, Wu Y, Li X, Zhou J, Fang J, Liang Y.   +8 more
europepmc   +1 more source