Results 21 to 30 of about 8,343,117 (194)

Mathematical Game Theory in Civil Engineering Fire Safety [PDF]

open access: yesE3S Web of Conferences, 2019
In the analysis of the project documentation of a two-storeyed sports complex it was established that despite compliance of the project to all standards in the fire safety field, under certain conditions there is a danger of a delay of full people ...
Shikuskaya Olga   +3 more
doaj   +1 more source

THE INTELLIGENT SYSTEM FOR AUTOMOTIVE FUELS QUALITY DEFINITION

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2013
An intelligent system, based on hydrodynamic method and artificial neural networks usage for automotive fuels quality definition have been developed. Artificial neural networks optimal structures for the octane number of gasoline, cetane number, cetane ...
Volodymyr Drevetskiy , Marko Klepach
doaj   +1 more source

Factors affecting continued use of ceramic water purifiers distributed to Tsunami-affected Communities in Sri Lanka [PDF]

open access: yes, 2012
Objectives  There is little information about continued use of point-of-use technologies after disaster relief efforts. After the 2004 tsunami, the Red Cross distributed ceramic water filters in Sri Lanka.
Casanova, L M   +3 more
core   +2 more sources

Health assessment of hydro-ecosystems based on homeostasis indicators of fish: Review of approaches

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2016
This paper reviews scientific literature concerning the possibility of using aspects of physiological responses of fish to environmental stressors and their indicators to assess vulnerability (‘health’) of hydro-ecosystems of various types.
N. A. Klimenko   +2 more
doaj   +1 more source

Biological indicators for pollution detection in terrestrial and aquatic ecosystems

open access: yesBulletin of the National Research Centre, 2020
Environmental pollution from varied sources is now deemed as one of the most serious problems everywhere. Several pollutants, however, could be perceived by certain biological indicators, each one is used to identify assured single or a category of ...
Alaa Zaghloul   +3 more
doaj   +1 more source

COMPUTER MODELLING OF AUTOMATIC CONTROL PROCESS OF DISTILLATION COLUMN

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2016
Here the process of distillation in the production of ethanol is considered. Developed a mathematical model of determination and regulation of ratio of distillation column and its impact on concentration and quantitative composition of impurities of ...
Volodymyr Drevetskiy, Vasyl Ivanchuk
doaj   +1 more source

Groundwater use for irrigation - a global inventory [PDF]

open access: yes, 2010
Irrigation is the most important water use sector accounting for about 70% of the global freshwater withdrawals and 90% of consumptive water uses. While the extent of irrigation and related water uses are reported in statistical databases or estimated by
Burke, Jacob   +6 more
core   +1 more source

Water-saving irrigated area expansion hardly enhances crop yield while saving water under climate scenarios in China

open access: yesCommunications Earth & Environment
Facing climate change risks of water shortages and crop yield losses, it is unclear in China that whether and how irrigated area expansion and technological yield improvement can increase production with less water. Here we used 2000–2018 as the baseline
Zhiwei Yue   +8 more
doaj   +1 more source

Estimating the Impacts of Plant Internal Nitrogen Deficit at Key Top Dressing Stages on Corn Productivity and Intercepted Photosynthetic Active Radiation

open access: yesFrontiers in Plant Science, 2022
Accurate and timely appraisal of plant nitrogen (N) demand is imperative to regulate the canopy structure and corn production. The strength and time of plant N deficit can be quantified by critical N concentration. The study was aimed to analyze nitrogen
Ben Zhao   +9 more
doaj   +1 more source

Use of nonwettable membranes for water transfer [PDF]

open access: yes, 1970
Transfer of water through nonwettable vinyl fluoride membranes has two unique features - /1/ very low water transfer rates can be held constant by holding temperature and solute concentrations constant, /2/ the pressure gradient against which water is ...
Hausch, H. G.
core   +1 more source

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