Results 1 to 10 of about 2,116 (167)

Quality Differences of Zhenghe White Tea from Different Altitudes [PDF]

open access: yes, 2023
To explore the effect of growing altitude on the quality of Zhenghe white tea, the sensory quality and biochemical composition of tea leaves and Zhenghe white tea from different altitudes were evaluated, and multivariate statistical analysis was applied ...
HUANG Linjie, XU Kai, ZHOU Chengzhe, SHI Biying, TIAN Caiyun, LU Li, GUO Yuqiong
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Discharge characteristics and discharge simulation model of long air gaps containing a floating conductor [PDF]

open access: yes, 2022
Long air gaps containing a floating conductor are common insulation types in power grids. During the transmission line live-line work, the process of lineman entering the transmission line air gap constitutes a live-line work combined air gap, which is a
Gao, Jiachen <1995>
core   +1 more source

Effects of Different Ecological Restoration Measures on Reconstruction of Slope Vegetation in Southeastern Xizang Autonomous Region [PDF]

open access: yes, 2023
[Objective] The effects of environmental factors on the plant community of a slope during ecological restoration objective of Pai-Mo Highway in Qinghai-Xizang Plateau were analyzed in order to provide theoretical basis for ecological restoration plan of ...
Huang Mengyue   +9 more
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Spatial-temporal Variation of Water Yield in Nanbei Panjiang River Basin Based on InVEST Model [PDF]

open access: yes, 2023
[Objective] The temporal and spatial variation characteristics of water yield and differences in the water yield function for different land use types, soil types, and topography in the Nanbei Panjiang River basin were analyzed in order to provide a ...
Chen Quan   +5 more
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高原环境对移居大鼠子代体重及大脑的影响

open access: yesZhongguo shiyan zhenduanxue, 2021
目的 探讨高原环境对移居大鼠子代体重及大脑的影响。方法 将16只(12只雌鼠,4只雄鼠)8周龄wistar大鼠按3∶1雌雄比随机分为高海拔组和低海拔组,待大鼠合笼受孕自然分娩后,比较两组子鼠出生后1周内体重、脑重及脑指数,并取子鼠大脑组织做病理切片染色观察。结果 高海拔组子鼠出生后1周内体重均低于低海拔组 ...
龚嘎蓝孜   +4 more
doaj  

Risk zoning of hail disaster in Anhui Province based on terrain correction technology [PDF]

open access: yes, 2023
Terrain correction is a key step to ensure the accuracy of risk zoning for hail disasters. This study utilizes the hail observations from 81 national meteorological stations in Anhui Province spanning from 1978 to 2020, along with geographic information ...
Hong TIAN   +5 more
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藏族高海拔地区妊娠晚期全血细胞计数、糖化血红蛋白及甲状腺功能的相关性研究

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2022
目的分析高海拔地区藏族孕产妇妊娠晚期全血细胞计数(CBC)、糖化血红蛋白(GHbA1c)及甲状腺功能的相关性。方法回顾性分析2021年1月1日至2021年12月31日在西藏自治区昌都市察雅县人民医院住院分娩的妊娠≥28周藏族单胎妊娠孕产妇临床资料,共纳入研究对象374例。研究对象均在入院时分娩前完成CBC、GHbA1c及总三碘甲状腺原氨酸(TT3)、总甲状腺素(TT4)、促甲状腺激素(TSH)的检测。根据研究对象长期居住地的海拔高度将其分为三组:A组海拔高度<3 500 m;B组海拔高度3 500~
崔金晖   +7 more
doaj  

Advances in the Study of Arbuscular Mycorrhizal Fungi in High Altitude and Cold Habitats on Tibetan Plateau [PDF]

open access: yes, 2017
极端生境往往蕴藏着具有特殊生理生态功能的生物类群.海拔高、温度低、生长季节短的青藏高原高寒草原生态系统是典型的极端生境之一,目前有关该生境中分布的丛枝菌根真菌(Arbuscular mycorrhizal fungi,AMF)研究已引起广泛关注.本文从青藏高原高寒生境中AM真菌的研究概况入手,论述青藏高原高寒生境中AM真菌的群落组成、物种多样性与分布特征、菌根侵染发育状况及高寒生境对AM真菌的影响.指出高寒生境中AM真菌群落结构研究方面存在的问题,探讨解决这些问题的可能途径及其研究发展前景 ...
张亮, 王强, 王晓娟, 金樑
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色季拉山不同海拔土壤微生物及真菌群落组成特征

open access: yesShuitu Baochi Xuebao, 2022
为探究不同海拔高度土壤微生物的分布特征,以西藏东南部色季拉山为研究区,以不同海拔高度(4 606,4 110,4 000,3 900,3 440 m)土壤为研究对象,分析0—5,5—10 cm 2个层次土壤可培养微生物数量分布特征,并采用高通量测序技术分析了真菌群落组成的丰富度和多样性,探讨了真菌群落组成的主要影响因素。结果表明,供试区土壤可培养微生物数量表现为细菌>放线菌>真菌,真菌数量与海拔高度显著相关,而细菌和放线菌数量随海拔高度无明显变化规律;5个海拔高度下共检测到真菌4个门、18个纲、47个目、
曹丽花, 刘合满, 杨红, 连玉珍
doaj  

东祁连山高寒草甸土壤“固-液-气”三相组成对海拔和坡向的响应

open access: yesShuitu Baochi Xuebao, 2022
为探究不同海拔和坡向下高寒草甸土壤"固—液—气"三相组成变化特征,以东祁连山高寒草甸为研究对象,分析了不同海拔(2 800,3 000,3 200,3 400,3 600,3 800,4 000 m)、坡向(阳坡、阴坡)高寒草甸的植被特征和土壤物理特征,结合植被指标拟合探讨高寒草甸"固—液—气"三相的最佳组成比例。结果表明:植被盖度、草层高度和地上生物量均随海拔升高呈先升高后降低,在海拔3 200 m处达最大值,同一海拔的阴坡植被盖度、草层高度、地上生物量均高于阳坡 ...
李强   +9 more
doaj  

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