Results 21 to 30 of about 2,124,411 (292)

Use of two functional monomers for a new approach to the synthesis of a magnetic molecularly imprinted polymer for ciprofloxacin

open access: yesJournal of Materials Research and Technology, 2021
Ciprofloxacin is an antibiotic widely used in the treatment of human and animal diseases and can be found as a contaminant in some foods of animal origin, such as milk.
Lucas M. Silva   +2 more
doaj   +1 more source

Comparison of air distribution systems in ice rink arena ventilation

open access: yesMokslas: Lietuvos Ateitis, 2013
The paper presents the requirements and functions of ventilation in ice rink arenas and discusses difficulties and problems of ventilation in such objects.
Agnieszka Stobiecka   +2 more
doaj   +1 more source

Directional sensitivity of differential pressure sensors of gas velocity used in manual gravimetric measurements of dust emissions from stationary sources / Czułość kierunkowa różnicowo-ciśnieniowych czujników prędkości gazu stosowanych w manualnych pomiarach grawimetrycznych emisji zanieczyszczeń pyłowych ze źródeł stacjonarnych

open access: yesArchives of Environmental Protection, 2015
Na potrzeby określania emisji zanieczyszczeń pyłowych do atmosfery z przemysłowych instalacji technologicznych często wykonywane są manualne pomiary rozkładu prędkości gazu w kanałach instalacji gazów odlotowych przy pomocy układów z różnicowo ...
Szulikowski Jerzy, Kateusz Przemysław
doaj   +1 more source

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

Removed

open access: yes, 2022
Removed until further notice.
openaire   +2 more sources

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

Removing singularities [PDF]

open access: yesJournal of High Energy Physics, 2003
Big bang/crunch curvature singularities in exact CFT string backgrounds can be removed by turning on gauge fields. This is described within a family of {SL(2)xSU(2)xU(1)_x}/{U(1)xU(1)} quotient CFTs. Uncharged incoming wavefunctions from the ``whiskers'' of the extended universe can be fully reflected if and only if a big bang/crunch curvature ...
Elitzur, Shmuel   +2 more
openaire   +2 more sources

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

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

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