Results 21 to 30 of about 2,739,419 (285)

Simulation Analysis of Heat Pumps Application for the Purposes of the Silesian Botanical Garden Facilities in Poland

open access: yesEnergies, 2022
Generating energy from renewable sources is becoming more and more popular and widespread. Air source heat pumps are one of the most popular types of heat pumps due to the general availability of a heat source and relatively low investment costs. The aim
Piotr Ciuman   +2 more
doaj   +1 more source

Numerical Analysis of the Impact of the Use of Personal Protective Equipment on the Face in the Process of Pollutants Spreading Emitted During Breathing

open access: yesArchitecture, Civil Engineering, Environment, 2023
The study presents the results of a numerical analysis of the effectiveness of the use of personal protective equipment of various designs on the spread of pollutants marked with CO2 emitted during human breathing.
Bulińska Anna   +2 more
doaj   +1 more source

Determination of the Interzonal Airflows in Naturally Ventilated Dwellings Based on Concentration Measurements of the Metabolic Carbon Dioxide

open access: yesEnergies, 2022
The role of interzonal airflows is especially pronounced in naturally ventilated buildings. In such buildings, reversed airflows in the ventilation stacks might occur as well.
Anna Bulińska, Zbigniew Buliński
doaj   +1 more source

Chemical and biological phosphorus removal in the activated sludge process [PDF]

open access: yes, 1980
Bibliography: leaves 86-88.This investigation set out to establish in what degree the phosphorus removal characteristics of the Modified Activated Sludge Process could be enhanced by the in-plant addition of iron salts.
Rabinowitz, Barry
core   +1 more source

Investigation of phosphate adsorption from aqueous media using synthetic mordenite and modified natural clinoptilolite zeolite adsorbents: characteristics, kinetics, and isotherms [PDF]

open access: yesJournal of Particle Science and Technology, 2021
This study investigates phosphate removal from aqueous solution by synthetic mordenite and modified clinoptilolite zeolite. The mordenite zeolite was synthesized using the solvothermal method, and natural clinoptilolite zeolite was modified by ultrasound
Mansoor Anbia, Hossein Pazoki
doaj   +1 more source

Greenness of procedures using NADES in the preparation of vegetal samples: Comparison of five green metrics

open access: yesTalanta Open, 2022
The principles of green analytical chemistry have led to the development of analytical procedures that are increasingly sustainable. Different metrics have been created for the evaluation of greenness, although determination of the green nature of new ...
Sabrina S. Ferreira   +9 more
doaj   +1 more source

Biological excess phosphorus removal in activated sludge systems [PDF]

open access: yes, 1988
Includes bibliographies.When this investigation was commenced in 1983 two activated sludge systems had been developed in South Africa that accomplish biological excess phosphorus (P) removal, the UCT and modified Bardenpho systems.
Wentzel, Mark Charles
core   +1 more source

Two-dimensional heat transfer analysis of timber structure walls filled with hemp-lime composite

open access: yesMATEC Web of Conferences, 2019
Hemp-lime composite is a thermal insulating material used as a filling in timber frame construction walls. It is a material based on the wooden part of industrial hemp stalk (hemp shives) and lime binder.
Brzyski Przemysław   +2 more
doaj   +1 more source

A Novel method for Synthesis of Modified Nanofiber with Functionalized Mesopouros by Electrospinning for Removal of Dye(Direct Yellow 12 (D.Y.12)) [PDF]

open access: yesشیمی کاربردی روز, 2020
The purpose of this study is to consider and compare applicability of modified chitosan nano fibers with functionalized mesoporous silica in Elecrtrospinning method for Direct Yellow 12 (D.Y.12) removal from aqueous solutions.
saeid masoudnia   +4 more
doaj   +1 more source

Reimagining ownership and governance for carbon dioxide removal (CDR): exploring existing alternative models to advance equity and justice

open access: yesCarbon Management
Carbon dioxide removal (CDR) technologies are rapidly transitioning from research to real-world application. At present, private-sector oriented logics for CDR deployment dominate—a primacy that poses several risks for just and equitable outcomes.
Giulia Belotti   +3 more
doaj   +1 more source

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