Results 11 to 20 of about 16,435,716 (297)

The Arrangement Concept and the Energy Potential of the Vapor Compression Heat and Cooling Supply Based on a Binary Low-Temperature Source

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2022
The combined use of low-potential soil heat and air flows in heat pump heat supply systems allows for its regulated redistribution in the processes of customers’ consumption.
V. D. Petrash   +3 more
doaj   +1 more source

Resolving the Dust-to-Metals Ratio and CO-to-H2 Conversion Factor in the Nearby Universe [PDF]

open access: yes, 2020
We investigate the relationship between the dust-to-metals ratio (D/M) and the local interstellar medium environment at ∼2 kpc resolution in five nearby galaxies: IC 342, M31, M33, M101, and NGC 628.
I-Da 達 Chiang 江宜   +10 more
semanticscholar   +1 more source

Correlation Study Between Point Load Test And Uniaxial Compressive Strength and Tensile Strength of Some Sedimentary Rocks In Mosul City [PDF]

open access: yesEngineering and Technology Journal, 2012
The point load test is used as a quick and inexpensive means of obtaining rock strength indexes when logging core samples in either a field or laboratory setting.
Thamer M. Nuri   +2 more
doaj   +1 more source

Per-length biomass estimates of Antarctic krill (Euphausia superba)

open access: yesFrontiers in Marine Science, 2023
Total biomass and areal biomass density are often necessary to establish ecological relationships and enable informed management decisions, in particular setting fisheries catch limits.
Abigail J. R. Smith   +3 more
doaj   +1 more source

The CO-to-H2 Conversion Factor [PDF]

open access: yes, 2013
CO line emission represents the most accessible and widely used tracer of the molecular interstellar medium. This renders the translation of observed CO intensity into total H2 gas mass critical to understand star formation and the interstellar medium in
A. Bolatto, M. Wolfire, A. Leroy
semanticscholar   +1 more source

INTERDEPENDENCE BETWEEN POINT LOAD INDEX, COMPRESSIVE STRENGTH AND CRUSHING RESISTANCE OF JORDAN OIL SHALE AND RELATION TO CALORIFIC VALUE; pp. 252–268 [PDF]

open access: yesOil Shale, 2015
Rock parameters are important to be considered in mine design. Physical-mechanical tests were carried out on oil shale and dolostone samples from the Attarat Um Ghudran oil shale area in central Jordan, in order to determine the rock mass properties.
VIVIKA VÄIZENE   +4 more
doaj   +1 more source

Current problems of the patent tax system

open access: yesВестник университета, 2021
The patent system of taxation in the Russian Federation and the conditions for its application have changed several times since 2006. In connection with the abolition of the single imputed income tax from 2021, the relevance of the application of the ...
N. Z. Zotikov
doaj   +1 more source

Assessment of the combined nitrate and nitrite exposure from food and drinking water: application of uncertainty around the nitrate to nitrite conversion factor

open access: yesFood Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment, 2020
Dietary exposure to nitrate and nitrite occurs via three main sources; occurrence in (vegetable) foods, food additives in certain processed foods and contaminants in drinking water.
Annick D van den Brand   +8 more
semanticscholar   +1 more source

evaluation of the effect of temperature and time on the conversion factor of acrylic resin denture base material [PDF]

open access: yesAl-Rafidain Dental Journal, 2011
The aims of this study were to evaluate the effect of change in time ,temperature (increase or decrease) on the degree of conversion and residual monomer release of the vertex heat cured acrylic resin.
Nadira A.Hatim   +2 more
doaj   +1 more source

Conditions for Energy Efficient Heat Supply Based on the Transformed Heat of Soil and Air Flows

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2023
Based on the analysis of thermohydraulic processes and the structural and functional structure of the proposed system of heat and cold supply of buildings, a multifactorial dependence of the actual conversion coefficient was established to assess the ...
V. D. Petrash   +3 more
doaj   +1 more source

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