Results 51 to 60 of about 435,841 (322)

Energy evaluation of de-stress blasting [PDF]

open access: yesActa Montanistica Slovaca, 1997
V èlánku sú prezentované teórie koncepcie napäovo-pretvárnych stavov horninového masívu a komponenty uvo¾nenej energie z geofyzikálneho håadiska pri protiotrasových trhacích prácach.
Sedlák Vladimír
doaj  

Operando X‐ray Spectroscopy Study of Pd and Pd–Au Laterally Condensed Catalysts during Selective Acetylene Hydrogenation: The Role of Carbon

open access: yesAdvanced Materials, EarlyView.
The selective hydrogenation of acetylene over laterally condensed Pd and Pd–Au catalysts (LCCs) was investigated using operando X‐ray absorption and photoelectron spectroscopy in combination with density functional theory. Pd‐LCCs were found to incorporate significantly more carbon into the metal lattice than Pd–Au LCCs, where the carbon uptake governs
Eylül Öztuna   +22 more
wiley   +1 more source

Study of thermal effects while filling an empty tank

open access: yesRevue des Énergies Renouvelables, 2013
We are interested in this paper to the thermal effects occurring during the filling of hydrogen tanks. The consequence of this heating on the storage performance of these speakers was appreciated.
Y. Kerboua Ziari, M. Benouahlima
doaj  

Energetický koncept spolkové vlády německa do roku 2050 - příprava pro trvalý ekologický rozvoj [PDF]

open access: yesACC Journal, 2011
Energetický koncept Německa do roku 2050, který odsouhlasila německá spolková vláda, počítá s reálným nárůstem HDP oproti roku 2008 na 139 %. Zároveň by v tomto období mělo i přes zvýšenou energetickou efektivitu ve všech společenských oblastech dojít ...
Wilhelm Riesner
doaj  

Effect of an Aerosol Dryer on Ambient PM Measurements with SDS011 Low Cost Sensors during a Two-year Period in Duisburg, Germany

open access: yesAerosol and Air Quality Research, 2023
The performance of low-cost particulate matter (PM) sensors (NovaFitness SDS011) in connection with a self-developed aerosol dryer has been investigated in ambient air measurements over a two-year period by comparing the reported mass concentration of ...
Martin Nothhelfer   +7 more
doaj   +1 more source

Performance Constraints of All‐Perovskite Tandem Solar Cells in Low‐Intensity, Low‐Temperature Environments

open access: yesAdvanced Materials, EarlyView.
All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen   +10 more
wiley   +1 more source

Caractérisation des vents induits par les véhicules en mouvement et évaluation de leur potentiel éolien

open access: yesRevue des Énergies Renouvelables, 2019
Cette étude a été menée au Cameroun dans le département de la Menoua, région de l’Ouest avec pour objectif une meilleure connaissance des vents induits par les véhicules en mouvement, ainsi que leurs potentiels énergétiques.
S. Dongmo, J.K. Tangka, B.M. Djousse
doaj  

Mathematical model of thermal aggregates [PDF]

open access: yesActa Montanistica Slovaca, 1998
Tepelné agregáty môžme charakterizova jako priemyselné pece s ve¾kou spotrebou energie. Jednou z možných ciest zníženia spotreby energie je optimalizácia a priebežné riadenie priemyselných tepelných agregátov pomocou simulaèných modelov. Východiskom
Kostúr Karol, Pokorný Imrich
doaj  

Legislation of Renewable Energy Sources In Slovakia / Legislatívna Úprava Obnoviteľných Zdrojov Energie Na Slovensku

open access: yesEU agrarian Law, 2015
Pestovanie energetickych rastlin a drevin na poľnohospodarskej pode a ďalšie využitie ich energie predstavuje zasadny vyznam pre realizaciu dlhodobej strategie Slovenska v oblasti ziskavania a využivania obnoviteľnych zdrojov energie (OZE).
Marišová Eleonóra   +3 more
doaj   +1 more source

Solar energy in the context of energy use, energy transportation and energy storage [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2013
Taking the UK as a case study, this paper describes current energy use and a range of sustainable energy options for the future, including solar power and other renewables. I focus on the area involved in collecting, converting and delivering sustainable energy, looking in particular detail at the potential role of solar power.
openaire   +2 more sources

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