Results 31 to 40 of about 64,625 (272)

Clogging mechanisms and preventive measures in artificial recharge systems

open access: yesJournal of Groundwater Science and Engineering, 2021
Groundwater which occurs in fractured rock or porous aquifers or other geological weak zones such as faults and fractures is usually extracted via boreholes, hand wells or other sources such as springs.
M Shahbaz Akhtar   +2 more
doaj   +1 more source

Simulating Dynamical Features of Escape Panic [PDF]

open access: yes, 2000
One of the most disastrous forms of collective human behaviour is the kind of crowd stampede induced by panic, often leading to fatalities as people are crushed or trampled.
A Mintz   +21 more
core   +2 more sources

Evaluation of clogging risk of synthetic filter due to calcium carbonate in agricultural drainage (case study: Romhormoz rejion ) [PDF]

open access: yesعلوم و مهندسی آبیاری, 2022
Using synthetic filters in any location needs familiarity about benefits and challenges of its usage .Currently synthetic filter is widely used in many places in the world .But it hasn't been accepted in Iran because there isn’t enough   knowledge and ...
Maede Tamimi   +3 more
doaj   +1 more source

Redefining the role of obstacles in pedestrian evacuation [PDF]

open access: yes, 2018
The placement of obstacles in front of doors is believed to be an effective strategy to increase the flow of pedestrians, hence improving the evacuation process.
Garcimartín, A.   +5 more
core   +1 more source

The role of biofilms in subsurface transport processes [PDF]

open access: yes, 2010
Landfill and radioactive waste disposal risk assessments focus on contaminant transport and are principally concerned with understanding the movement of gas, water and solutes through engineered barriers and natural groundwater systems.
Bateman, K.   +6 more
core   +1 more source

The Combined Effect of Temperature and Pressure on Emitter Clogging in Integrated Drip Fertigation System

open access: yesGuan'gai paishui xuebao, 2023
【Background and objective】 Water-fertilizer integrated drip irrigation has advantages over traditional methods, including even fertilization, saving water and fertilizer, and precise control. However, emitter clogging is a problem limiting its widespread
HE Kun   +4 more
doaj   +1 more source

Study of Clogging Phenomenon for a Conical Hopper: The Influence of Particle Bed Height and Hopper Angle

open access: yesScience and Technology of Nuclear Installations, 2021
The granular flow is one of the principal issues for the design of pebble bed reactors. Particularly, the clogging phenomenon raises an important issue for pebble bed reactors. In this paper, we conduct experiments and discrete particle simulation of two-
Muhammad Hammad Khalid, Yixian Zhou
doaj   +1 more source

Effect of Grain size of Porous Media on Physical Clogging

open access: yesJournal of Zankoy Sulaimani - Part A, 2006
The effect of size of grains of porous media on physical clogging under constant flow rates was investigated experimentally. A sandy soil having particle size ranging from 355 to 1190 pm, fractioned into seven unisizes, was selected as the porous media" Two types of silt soils (smaller than 63 pm) were used as suspensions, Two concentrations (500 and ...
Nawzad Rahim, Kamal Rasheed, Omed Qadir
openaire   +1 more source

Risk evaluation for the combined clogging of subsurface drainage envelopes in arid areas

open access: yesAgricultural Water Management
Accurately assessing the clogging risk of the drainage pipe envelopes is a prerequisite for the reasonable design and proper management of subsurface drainage.
Chenyao Guo   +7 more
doaj   +1 more source

The effects of phytoremediation of treated urban wastewater on the discharge of surface and subsurface drippers (Case study: Gorgan wastewater treatment plant in northern Iran)

open access: yesCleaner Engineering and Technology, 2021
Clogging of drippers in drip irrigation systems is one of the main problems in exploiting unconventional water resources such as saline water and wastewater.
Morvarid Mohammad Mirzaee   +2 more
doaj   +1 more source

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