Results 31 to 40 of about 17,412 (165)

The Historical Roots of Energy Consumption: Does Financial Development Matter?

open access: yesWorld Affairs, Volume 188, Issue 3, Fall 2025.
ABSTRACT The objective of this study is to investigate how statehood experience affects energy consumption through the advancement of finance and its sub‐sectors. By doing so, the study uses the ordinary and two‐stage least squares methods to analyze data from 111 countries spanning from 2000 to 2018.
Therese E. Zogo   +2 more
wiley   +1 more source

东北黑土区农田土壤风蚀的影响因素及其数量关系

open access: yesShuitu Baochi Xuebao, 2017
为明确东北黑土区农田土壤风蚀的主要影响因素,通过室内模拟试验,对比分析了黑土在不同风速(5~14 m/s)、土壤含水量(2%~11%)以及秸秆覆盖率(0~80%)下的风蚀速率差异,进而分析了风蚀速率与各因素之间的数量关系。结果表明,黑土起沙风速略大于5 m/s,其风蚀速率随风速增大呈指数增加,风速14 m/s(含水量2%)时的风蚀速率比8 m/s时增加了11.6~42.7倍。黑土风蚀速率随土壤含水量升高呈先增加后降低趋势;在土壤含水量小于5%时随含水量升高而逐渐增加,至含水量5%时达到峰值并逐渐降低 ...
林, 李和平, 肖
doaj  

Numerical solution for Moisture Diffusion Equation in Solid during Drying Process (Part3) : Introduction of a function φ=∫Ddw [PDF]

open access: yes, 1996
We introduced a function of moisture content defined by φ = ∫ Ddw and then expressed the diffusion equation by using the function φ instead of moisture content w.
山口 信吉, 若林 嘉一郎
core   +1 more source

Tree mycorrhizal associations regulate relationships between plant and microbial communities and soil organic carbon stocks at local scales in a temperate forest

open access: yesFunctional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang   +10 more
wiley   +1 more source

初始含水率对崩岗土体抗拉特性的影响

open access: yesShuitu Baochi Xuebao, 2019
针对花岗岩发育的崩岗土体崩壁失稳等问题,通过单轴抗拉试验,研究了湖北通城地区不同初始含水率的崩岗土体抗拉强度特性。结果表明:初始含水率对崩岗土壤抗拉强度影响明显。土壤抗拉强度特征曲线为单峰型,表土层、红土层和红砂过渡层抗拉特征曲线在含水率WC(24.4%)附近出现抗拉强度峰值,而砂土层在WC(25.8%)出现抗拉强度峰值。崩岗不同层次土壤轴向拉伸长和径向收缩长随初始含水率呈现正相关关系,且土壤轴向拉伸率和径向收缩率与初始含水率拟合出相关系数较高的线性函数关系 ...
冯延云   +3 more
doaj  

水分耗散下紫色土埂坎裂隙发育及影响因素

open access: yesShuitu Baochi Xuebao, 2022
埂坎裂隙发育危害埂坎稳定性, 进而影响埂坎水土保持作用的发挥。为揭示失水过程埂坎裂隙发育规律及其主要影响因素, 以紫色土坡耕地埂坎为样地, 采用模拟埂坎试验, 研究不同初始含水率(25%, 30%, 35%)、干密度(1.3, 1.4, 1.5 g/cm3)和加筋量(0.05%, 0.15%, 0.25%)下裂隙发育过程, 通过图像分析方法获取裂隙发育强度和复杂度指标, 分析了裂隙发育与(初始)含水率、干密度、加筋量的关系。结果表明: 水分耗散下裂隙开裂可分为起始阶段、迅速扩展和基本稳定3个阶段 ...
李颖, 韦杰, 罗华进, 甘凤玲
doaj  

Assessing Closed Hydroponic Subsystems for Batavia Lettuce Growth Under Different Planting Densities

open access: yesWorld Water Policy, Volume 11, Issue 2, Page 427-438, May 2025.
ABSTRACT Hydroponic systems have the potential to be sustainable and alternative methods for food production that confer advantages of high production and better control of growth. However, only a few studies have focused on leafy vegetable growth in different subsystems and environmental variables.
Demet Çekin   +6 more
wiley   +1 more source

土壤初始含水率对涌泉根灌土壤水分及氮素运移特性的影响

open access: yesShuitu Baochi Xuebao, 2017
为了探究涌泉根灌水肥一体化灌溉在不同土壤初始含水率下水氮运移特性,通过室内肥液入渗试验,研究了不同土壤初始含水率(4.13%,7.21%,8.77%,11.06%,14.01%)条件下累积入渗量的入渗特性、湿润锋运移、土壤水分以及铵态氮和硝态氮的运移特性,建立了涌泉根灌累积入渗量、各向湿润锋运移距离与不同土壤初始含水率之间的关系,提出了不同初始含水率下涌泉根灌累积入渗量、各向湿润锋运移距离的经验模型。结果表明:累积入渗量、各向湿润锋运移距离以及湿润体内水分和氮素的分布 ...
刘 显   +5 more
doaj  

Effect of drying conditions and final moisture content on aromatic rice properties and its application [PDF]

open access: yes, 2007
"January 2007"--CoverThesis (Ph. D. in Bioresource Engineering)--University of Tsukuba, (A), no.
Hashemi Jafar
core  

Transport Phenomena for Drying of Brown Rice Kernel(2) : Calculations of Temperature and Moisture Content of Brown Rice Kernel [PDF]

open access: yes, 1987
Based on the experimental results of the previous paper, the transport phenomena for drying of a brown rice kernel were analytically discussed by assuming the kernel to be a homogeneous sphere.The fundamental differential equations of moisture and heat ...
山口 信吉, 若林 嘉一郎
core   +1 more source

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