Results 51 to 60 of about 22,415 (183)
野生动物学报, 1991 猕猴在解剖、生理、生化各方面与人类最为相似,其实验结果易外推于人,是替代人体最理想的实验动物。福建山区辽阔,野生猕猴资源丰富,为了更好地利用猕猴作为人类疾病的实验动物模型,进一步了解正常野生猕猴各项生理生化指标,我们特对捕自福建的猕猴进行肝功能指标测定,旨在建立一套福建野生猕猴正常肝功能指标,以保证实验的准确性。
周斌华 +5 more
doaj
Evaluating left atrial function and predicting the efficacy of radiofrequency catheter ablation with persistent atrial fibrillation by speckle tracking imaging [PDF]
, 2015 目的：探讨应用斑点追踪技术（STI）评价持续性房颤患者经导管射频消融（RFCA）术前、术后左心房结构功能变化，并预测房颤患者经导管射频消融术后随访至术后6个月维持窦性心律的可能性。方法：对45例经皮导管射频消融术的持续性房颤患者分别于术前1周、术后24小时、术后3个月、术后6个月和25例对照组（健康志愿者）进行左房结构功能及应变率分析，测量和计算左房前后径指数（LADI）、左房面积指数（LAAI）、左房最大容积指数（LAVImax）、左房射血分数（LAEF）、E/E ...
钟小芳
core
Rare Metals, EarlyView.ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source
Role of E3 ubiquitin ligase Smurf1 in regulating NF-κB Signaling [PDF]
, 2016 核因子NF-kappaB是一种在哺乳动物体内广泛表达并且种属间高度保守的转录因子，它在免疫及炎症反应、生长发育、肿瘤形成等多个生理及病理学过程中发挥关键的调控作用。静息状况下，NF-kappaB与NF-kappaB抑制因子IkappaBalpha(InhibitorofNF-kappaB，IkappaBalpha)在胞质中形成复合物，其功能活性被抑制。但当细胞受到上游配体(例如肿瘤坏死因子alpha(tumornecrosisfactoralpha，TNFalpha)的刺激之后 ...
王群
core
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Stand functional diversity (RaoQ) and stand functional composition in terms of the functional traits of the component species (CWM trait) are critical for ecosystem processes and functioning, such as litter decomposition and associated nutrient cycling.
Bai‐Yu Yang +12 more
wiley +1 more source
Shuitu Baochi Xuebao, 2001 河岸带具有重要的生态、社会、经济和旅游价值.河岸带研究以生态学、水文学和地貌学为基础,涉及多种学科和技术,而我国河岸带的理论与实践研究均较为薄弱.本文阐述了河岸带研究的意义及其功能,探讨了退化河岸带生态功能恢复的理论及措施,提出了河岸带今后管理的目标、原则和研究方向.
张建春
doaj
Biochemical characteristics and function studies of Esx-1 secretion-associated protein EspL and EspG1 [PDF]
, 2016 由巨噬细胞等人体免疫细胞聚集形成的肉芽肿是结核病的形成标志，肉芽肿的形成在结核分枝杆菌的致病过程中扮演着重要角色，它使被感染的宿主与结核分枝杆菌融合在一起。结核分枝杆菌通过特异性的蛋白分泌系统Esx-1分泌系统将具有毒性作用的毒力因子通过高疏水性的细胞膜分泌到胞外。这些毒力因子与宿主中肉芽肿的形成以及结核分枝杆菌毒性作用有关。EspL是结核分枝杆菌Esx-1分泌系统中的一个重要的蛋白，已有研究表明EspL可能通过影响另外两个毒力因子EspE和ESAT-6的分泌而调控肉芽肿的形成 ...
田双良
core
Methods in Ecology and Evolution, EarlyView.Abstract DNA barcode‐based species identification has become pivotal in biodiversity research. Current barcoding‐based deep learning methods have advantages in species identification but exhibit significant limitations. By using COI barcoding alone, previous studies were unable to fully capture species identification features. Prior methods showed that
Bin Ye +4 more
wiley +1 more source
Renmin Zhujiang随着经济社会的发展，灌渠的功效也在发生着改变，不仅满足农业灌溉，防洪排水，还兼顾着改善生态环境的重任。以赣西北锦惠渠为研究对象，针对其清淤体系低效导致河道生态退化、渠顶工程废弃引发功能丧失、杂树杂草失控形成生态恶性循环以及 设备与资金短缺制约治理效能等问题，提出“技术升级-功能活化-机制创新”三重协同路径，把握“安全-生态-文化-经济”四维平衡。通过分级治理融合生态工法，打造集镇、村庄和郊野三级多功能廊道，引入智慧化管理创新运维模式，实现灌区功能的同时，将堤岸生物多样性指数从1.2增至2.5 ...
刘锦春
doaj