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Key energy indicators for sustainable development goals in Ukraine [PDF]

open access: yesProblems and Perspectives in Management, 2022
Transforming the energy sector to provide universal access to reliable and modern energy services is an essential task for Ukraine, one of the Eastern Partnership countries with heavy energy dependence.
Svitlana Naumenkova   +2 more
doaj   +1 more source

Broadband Spectral Shaping of Regenerative Amplification with Extra-Cavity Waveplate for Cross Polarized Wave Generation

open access: yesApplied Sciences, 2022
We demonstrated extra-cavity gain narrowing pre-compensating in a regenerative amplifier with a multi-order triple-wavelength waveplate (WP). With a 1.117 mm thickness quartz waveplate, which was placed on the stretcher, the gain narrowing effect was ...
Baozhen Zhao   +7 more
doaj   +1 more source

Improved cross polarized wave generation with an aperture

open access: yesAIP Advances, 2022
A cross polarized wave (XPW) generation experiment with double BaF2 crystals in air was demonstrated with 120 µJ input pulse. A circular aperture was used to truncate the near field profile of the input beam and remove the outer part of the beam, and ...
Baozhen Zhao   +6 more
doaj   +1 more source

Application of Nomarski interference system in supersonic gas-jet target diagnosis

open access: yesAIP Advances, 2021
Supersonic gas-jet target performs an important role in laser wakefield acceleration, and its density diagnosis is a significant part of target characteristic study.
Qiushi Liu   +11 more
doaj   +1 more source

Characteristic diagnosis of supersonic gas jet target for laser wakefield acceleration with high spatial-temporal resolution Nomarski interference system

open access: yesFrontiers in Physics, 2023
Gas targets hold distinctive significance and advantages in the field of laser-matter interaction. As a major type of gas targets, supersonic gas target is one of the most commonly used targets for laser wakefield acceleration (LWFA).
Qiushi Liu   +10 more
doaj   +1 more source

Development and Rationale of Two-Disk Operating Body of Agricultural Machine for Tillage

open access: yesНаука и техника, 2021
One of the main problems in the design of agricultural machines, including tillage machines, is to ensure the optimal energy intensity of various technological operations. The design, kinematic and technological parameters of rotary tillage machines have
A. S. Ivanov   +2 more
doaj   +1 more source

The impact of digital economy and industrial structure distortion on Xinjiang’s energy intensity under the goal of “double carbon”

open access: yesFrontiers in Environmental Science, 2022
Reducing energy intensity is an important measure to achieve the goal of “double carbon” and build a beautiful Xinjiang. Selecting the panel data of 14 regions in Xinjiang from 2010 to 2020, this paper investigates the influence of digital economy and ...
Qingran Guo   +5 more
doaj   +1 more source

Energy Intensity of Steel Manufactured Utilising EAF Technology as a Function of Investments Made: The Case of the Steel Industry in Poland

open access: yesEnergies, 2021
The production of steel in the world is dominated by two types of technologies: BF + BOF (the blast furnace and basic oxygen furnace, also known as integrated steel plants) and EAF (the electric arc furnace).
Bożena Gajdzik   +2 more
doaj   +1 more source

Evaluation Threshold Effect of Income on Carbon Dioxide Emissions Intensity in Selected MENA Countries: Nonlinear Panel Data Approach [PDF]

open access: yesPizhūhishnāmah-i Iqtiṣād-i Inirzhī-i Īrān, 2015
This paper evaluates the threshold effect of income on carbon dioxide emissions intensity in the MENA countries using panel smooth transition regression model.
Hossein Amiri   +2 more
doaj   +1 more source

Nexus between trade and environmental quality in sub-saharan Africa: Evidence from panel GMM

open access: yesFrontiers in Environmental Science, 2022
Environmental sustainability is a burning fact worldwide, especially in developing nations. Equitable economic development, environmental protection, energy efficiency and security have been placed at the apex of economic discussant and policy ...
Anselme Andriamahery   +2 more
doaj   +1 more source

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