Results 31 to 40 of about 34,019 (235)

Measurements of unsaturated hydraulic conductivity of snow.

Journal of the Japanese Society of Snow and Ice, 2000
積雪中の水の移動を知る上でもっとも重要なパラメータである不飽和透水係数を, しまり雪 (平均粒径0.5mm, 平均密度530kg/m3) および中ざらめ雪 (1.3mm, 620kg/m3) と大ざらめ雪 (1.7mm, 610kg/m3) の3種類の雪について実験室で測定した.実験は, 0℃の恒温槽内にて, 水の流下フラックスを一定にする「フラックス制御型定常法」によって行った.積雪中の水の負圧 (サクション : h) と流下フラックスから, 不飽和透水係数Kとサクションhの関係K (h) を求めた.次に水分特性 (サクションと含水率の関係) の測定結果を用い, 不飽和透水係数と重量含水率θwの関係K (θw) に変換した.その結果, 不飽和透水係数Kは ...
Shinsuke SUGIE, Renji NARUSE
openaire   +2 more sources

Development and Preliminary Evaluation of an Improvised Tension Disc Permeameter for Determining Unsaturated Soil Hydraulic Properties [PDF]

Philippine E-Journal for Applied Research and Development, 2016
An improvised tension disc permeameter for determining the unsaturated hydraulic properties of soil was fabricated using low-cost and locally-available materials.
Maurice A. Duka, Charles John C. Gunay, Rosa B. De Los Reyes, Joan Cecilia C. Casila, Jeffrey A. Gonzales, Erwin C. Escobar   +5 more
doaj  

تقويم الجريان غير المشبع لمبزل الحر تحت الظروف الحقمية لتربة مزيجة طينية غرينية :ألتنبأ عن األيصالبة المائية غير المشبعة ومقدات المحتوى المائي

Journal of Engineering, 2008
Since no in situ studies exist for determining unsaturated hydraulic characteristics of Iraqi soils during internal drainage under no evaporation conditions, a field study was conducted on a silty clay loam soil to determine unsaturated hydraulic ...
سموم برغوث سالم, أفراح مهدي صالح   +1 more
doaj   +1 more source

Analysis of Earth Dam Body Behavior under Rapid Drawdown Conditions in Reservoir Water Level by Laboratory and Numerical Methods

علوم آب و خاک, 2021
The present study is investigated the earth dam stability during drawdown based on both numerical and experimental aspects. To validate the numerical model, a model was performed experimentally.
M. Pakmanesh, H. Mousavi Jahromi, A. Khosrojerdi, H. Hassanpour Darvishi, Hossein Babazadeh   +4 more
doaj  

Estimation of Unsaturated hydraulic parameters by In-situ technique [PDF]

, 2000
In-situ determination of fundamental hydraulic parameters like variably saturated hydraulic conductivity (K(FS)) and the matric flux potential (Φ(m)) provides a foundation from which several other unsaturated soil parameters can be estimated, namely the ...
Fujii, Hiroaki, Jafar, Ali Mohammad, Takeshita, Yuji   +2 more
core   +1 more source

Estimating Unsaturated Hydraulic Conductivity in Unsaturated Soil Using Soil Moisture Sensors

International Journal of Integrated Engineering, 2023
Unsaturated hydraulic conductivity (K) is a measurement of soil water-retaining ability in unsaturated soil. The unsaturated hydraulic properties are necessary to predict the movement of water in unsaturated soil. The current study aims to create an alternative experimental device to estimate theKusing soil moisturesensors. The experimental
Ong Sin Tian, Goh Eng Giap, Rudiyanto Rudiyanto, Mohammad Fadhli Ahmad, Roslaili Abdul Aziz   +4 more
openaire   +1 more source

Methane Generation Using an Anaerobic Biodigester From Waste Leachate Water

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Leachate wastewater (LWW) is characterized by slow biodegradation and low biogas production due to resistant materials and limited biological activity. Therefore, applying pretreatments is essential to improving biodegradation potential, which consequently boosts energy recovery.
Khairi R. Kalash, Nisreen S. Ali, Mustafa H. Al‐Furaiji, Mahir A. Abdulrahman, Talib M. Albayati, Buthainah Ali Al‐Timimi   +5 more
wiley   +1 more source

Examining the Effect of Pore Size Distribution and Shape on Flow through Unsaturated Peat using Computer Tomography [PDF]

, 2009
The hydraulic conductivity of unsaturated peat soil is controlled by the air-filled porosity, pore size and geometric distribution as well as other physical properties of peat materials. This study investigates how the size and shape of pores affects the
Elliot, T.R., Elrick, David, Heck, Richard J., Price, Jonathan S., Quinton, William L., Rezanezhad, Fereidoun   +5 more
core   +2 more sources

Fasting and Refeeding Mediated Phospholipid Remodeling Plays an Important Role in Improving Meat Quality of Aged Laying Hens

Animal Research and One Health, EarlyView.
ABSTRACT This study explored fasting‐induced physiological remodeling effects on meat quality in aged laying hens. Fasting for 15 days (F15) significantly reduced abdominal fat, intermuscular fat width, subcutaneous fat thickness, and liver index versus pre‐fasting (F0) (p < 0.05), which recovered post‐refeeding.
Xiaoran Zhang, Jun Zhang, Yadong Tian, Donghua Li, Yanhua Zhang, Lujie Zhang, Yujie Gong, Xiangtao Kang, Ruirui Jiang   +8 more
wiley   +1 more source

Application of fitting parameters in best fit equation

E3S Web of Conferences, 2016
Soil-water characteristic curve (SWCC) contains key information for the application of unsaturated soil mechanics principles to engineering practice. SWCC variables such as air-entry value, residual suction and residual saturation are commonly referred ...
Qian Zhai, Rahardjo Harianto
doaj   +1 more source