Results 21 to 30 of about 16,435,716 (297)

Study on the conversion of fuel nitrogen into NOx / Kure esančio azoto perėjimo į NOx tyrimai

open access: yesMokslas: Lietuvos Ateitis, 2011
The aim of this work is to investigate NOx regularities combusting fuels having high concentration of nitrogen and to develop methods that will reduce the conversion of fuel nitrogen into NOx.
Raminta Plečkaitienė   +3 more
doaj   +1 more source

INCREASING THE ACCURACY OF HIGH VOLTAGE CAPACITIVE DIVIDERS

open access: yesИзмерение, мониторинг, управление, контроль, 2022
Background. The object of the study is high-voltage capacitive dividers used in the verification (calibration) operations of high-voltage measuring instruments, as well as, if necessary, expanding the measurement limits of electrostatic voltmeters. The
A.I. Nefed’ev, D.I. Nefed’ev
doaj   +1 more source

Compression heat pumps as an energy efficient devices [PDF]

open access: yesСтроительство уникальных зданий и сооружений, 2015
The aspect of energy efficiency is one of the most actual for Russia. Usage of thermal pumps allows to receive energy for functioning of buildings and constructions’ engineering systems.
Darya Mikhailovna Shuravina   +2 more
doaj   +2 more sources

Experimental study on the influence of the shape and size specimen and the type of cement used on the conversion factors of compressive strength of concrete specimens [PDF]

open access: yesJournal of Structural and Construction Engineering, 2020
Compressive strength test of concrete is one of the most important tests for controlling the quality of concrete in construction structures and, moulds with different shapes and dimensions (cubic and cylindrical) are used to provide experimental ...
Baitollah Badarloo, mahboobeh pirizadeh
doaj   +1 more source

Full-disc 13CO(1–0) mapping across nearby galaxies of the EMPIRE survey and the CO-to-H2 conversion factor [PDF]

open access: yes, 2018
Carbon monoxide (CO) provides crucial information about the molecular gas properties of galaxies. While $^{12}$CO has been targeted extensively, isotopologues such as $^{13}$CO have the advantage of being less optically thick and observations have ...
D. Cormier   +18 more
semanticscholar   +1 more source

Analysis of Iron Oxide Reduction Kinetics in the Nanometric Scale Using Hydrogen

open access: yesNanomaterials, 2020
Iron nanopowder could be used as a sintering aid to water-atomised steel powder to improve the sintered density of metallurgical (PM) compacts. For the sintering process to be efficient, the inevitable surface oxide on the nanopowder must be reduced at ...
Swathi K. Manchili   +3 more
doaj   +1 more source

A Study on the Rational Requirement Area Estimation of Municipal Sewage Treatment Facilities Using Statistical Techniques

open access: yes대한환경공학회지, 2020
Objectives:In this study, a adjusted sewage & wastewater treatment capacity-required area estimation methodology was proposed through various data analysis for the required area of domestic sewage & wastewater treatment, the occupancy ratio of each sub ...
No-Suk Park, Jeong Ik Oh, Sukmin Yoon
doaj   +1 more source

Primary Energy Factors for Electricity Production in Europe

open access: yesEnergies, 2022
The European Union (EU) has committed to supporting the United Nations’ efforts in line with the Paris Agreement for addressing climate change and has set ambitious targets to reduce primary energy consumption and emissions. Similar commitments have also
Constantinos A. Balaras   +3 more
doaj   +1 more source

Conversion of Peripheral CD4+CD25− Naive T Cells to CD4+CD25+ Regulatory T Cells by TGF-β Induction of Transcription Factor Foxp3

open access: yesJournal of Experimental Medicine, 2003
CD4+CD25+ regulatory T cells (Treg) are instrumental in the maintenance of immunological tolerance. One critical question is whether Treg can only be generated in the thymus or can differentiate from peripheral CD4+CD25− naive T cells.
Wanjun Chen   +7 more
semanticscholar   +1 more source

Determination of conversion factors for pine and spruce logs in stacks

open access: yesLeśne Prace Badawcze, 2019
The aim of this article was to determine the conversion factors for stacked pine and spruce logs with a length of 3–6 m. To this end, we measured stacks and their logs of a total of 3322.12 steres of pine logs and 1468.46 steres of spruce logs.
Jodłowski Krzysztof, Witkowska Joanna
doaj   +1 more source

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