Results 21 to 30 of about 5,514 (163)

Effect of Temperature on Sensing Performance of Optical Fiber Relative Humidity Sensor Based on Nafion-crystal Violet Film [PDF]

open access: yes, 2005
The optical fiber relative humidity sensor based on Nafion-crystal violet film was developed. The effect of samples temperature in the range from 299.15 K to 324.15 K on the sensing performance of the sensor was investigated.
周凯   +7 more
core   +3 more sources

Identifying potentially suitable and accessible refugia to mitigate impacts of an emerging disease on a rare tree

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Identifying refugia from emerging threats is vital to ensure the persistence of rare and threatened species, but modeling habitat distribution for these species is challenging and the role of people in refuge management is rarely considered. Myrtle rust is an emerging infectious disease that represents a grave threat to the rare wetland tree ...
Sarah M. Herbert   +7 more
wiley   +1 more source

塔里木河下游地下水位对柽柳叶绿素荧光特性的影响 [PDF]

open access: yes, 2010
选取塔里木河下游3处地下水埋深>6m的监测井位作为研究点,结合典型生态监测断面的地下水位监测数据,分析不同地下水埋深处柽柳的叶绿素荧光特性和光系统的光合活性.结果表明:随着地下水埋深加大和干旱胁迫加剧,柽柳叶片的实际光化学效率、电子传输速率和光化学猝灭等参数普遍下降;非光化学猝灭和调节性能量耗散量子产量等参数显著升高,而最大光量子产量总体处于相对适宜状态.干旱胁迫下柽柳的PSII光合活性随地下水埋深增大而下降,捕获光能的过剩程度加剧,发生光抑制的几率增大,其自身良好的抗旱性和自我调节机制 ...
朱成刚   +3 more
core  

Agricultural Lands as Important Wintering Habitats for the Critically Endangered Yellow‐Breasted Bunting in Nepal 尼泊尔农业用地作为极危黄胸鹀的重要越冬栖息地

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 134-142, June 2025.
Our study addresses the significant knowledge gap regarding the wintering population and habitat utilization of the Yellow‐breasted Bunting (Emberiza aureola) in Nepal, providing crucial insights that can aid in the conservation of this critically endangered species in wintering grounds.
Hem Bahadur Katuwal   +6 more
wiley   +1 more source

近25 a 银川市城市化进程中热力景观格局演变分析 [PDF]

open access: yes, 2016
: Based on the Landsat images and statistical data,in this paper the urbanization process and thermal landscape dynamics of Yinchuan City were analyzed. The objectives of this study were as follows: ① To analyze the spatial and dynamic characteristics of
吕荣芳, 张建明, 王浩, 王鹏龙
core  

A Method for Choosing the Opportunity of Reducing Grain Moisture Ventilation by Specific Enthalpy and Absolute Humidity of Air [PDF]

open access: yes
In this paper, a new method has been proposed to determine the timing of reducing grain moisture ventilation by specific enthalpy and absolute humidity of air.
YIN Guo-bin
core   +1 more source

Study on the Delayed-opening of Vacuum Pump in the Vacuum Pre-cooling Process [PDF]

open access: yes, 2011
ince VCE-15 vacuum pre-cooling machine can be influenced by the air conditions in the vacuum chamber,the opening-time of vacuum is delayed,resulting in the prolonging of cooling period.Based on the cooling load,the computational formula for delayed ...

core   +1 more source

China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition

open access: yesAntipode, Volume 57, Issue 3, Page 830-861, May 2025.
Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley   +1 more source

再论SF6气体湿度的监控与限值

open access: yesGaoya dianqi, 2006
分析了SF6高压电器中湿度对产品性能的影响;对现在执行的湿度限值标准及湿度监测方法提出了质疑,并提出了简单适用的按相对湿度来监控SF6湿度的方法及其相应的湿度限值新标准。
黎斌
doaj  

Nitrogen speciation and stable nitrogen and oxygen isotopic compostions of maritime aerosol in spring over the continental shelf sea in eastern china and the Northwest Pacific Ocean [PDF]

open access: yes, 2016
大气气溶胶是大气化学中多相反应的催化剂,其化学成份极其复杂。人类活动释放到大气中的不同形态的活性氮是大气气溶胶中一个重要的组成部分。在东亚冬季季风的驱使下,含有活性氮的气溶胶可以在大气中长距离传输并沉降到下风向区域的边缘海和开阔大洋。稳定氮同位素可用于追溯海洋源气溶胶中活性氮的主要来源及其在大气中的化学过程。但由于氮同位素在大气传输和化学转化过程中的分馏效应,使得其应用变得复杂。起源于西伯利亚的东亚冬季季风通过人为活性氮排放强烈的中国东北后又覆盖了整个中国东部陆架海和西北太平洋海域,而且在该海域的春季 ...
罗笠
core  

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