Results 11 to 20 of about 328,132 (218)

Hydrogenated borophene enabled synthesis of multielement intermetallic catalysts

open access: yesNature Communications, 2023
Supported metal catalysts often suffer from rapid degradation under harsh conditions due to material failure and weak metal-support interaction. Here we propose using reductive hydrogenated borophene to in-situ synthesize Pt/B/C catalysts with small ...
Xiaoxiao Zeng   +12 more
doaj   +1 more source

Effect of Secondary Combustion on Thrust Regulation of Gas Generator Cycle Rocket Engine

open access: yesApplied Sciences, 2022
Thrust regulation is applied to maintain the performance of the liquid propellant rocket engine. The thrust level of a rocket engine can be readily controlled by adjusting the number of propellants introduced into the combustion chamber. In this study, a
Sohaib Khan   +4 more
doaj   +1 more source

Magnetic and electronic properties of porphyrin-based molecular nanowires

open access: yesAIP Advances, 2016
Using spin-polarized density functional theory calculations, we performed theoretical investigations on the electronic and magnetic properties of transition metal embedded porphyrin-based nanowires (TM-PNWs, TM = Cr, Mn, Co, Ni, Cu, and Zn).
Jia-Jia Zheng   +4 more
doaj   +1 more source

Application of Augmented Reality for Learning Material Structures and Chemical Equilibrium in High School Chemistry

open access: yesSystems, 2022
Material structures and chemical equilibrium are important learning units in high school chemistry. In this study, an augmented reality (AR) system is developed to assist high school students in learning chemistry.
Wernhuar Tarng   +2 more
doaj   +1 more source

Analisis Dampak Kesalahan Konsep Laju Reaksi Terhadap Kesalahan Konsep Kesetimbangan Pada Siswa SMA

open access: yesJurnal Pendidikan Sains, 2015
: This study was designed to analyze the misconception of the chemistry subject reaction rate and chemical equilibrium and the effect of the misconceptions on the chemical equilibrium con-cept. The subjects of the research are two homogenous classes from
Yeyek Ihdal Umam   +2 more
doaj   +1 more source

Development of Flipped Guided Inquiry Learning (FGIL) System Using Discord Application on Chemical Equilibrium

open access: yesJurnal Paedagogy, 2023
This study aims to develop and analyze the validity and practicality of the Flipped Guided Inquiry Learning (FGIL) system using Discord application on chemical equilibrium.
Restu Ananda   +2 more
doaj   +1 more source

Experimental and Modeling Analysis of Brewers´ Spent Grains Gasification in a Downdraft Reactor

open access: yesEnergies, 2019
The first part of the current reported work presents experimental results of brewers’ spent grains gasification in a pilot-scale downdraft gasifier.
Sérgio Ferreira   +5 more
doaj   +1 more source

The impact of proline isomerization on antigen binding and the analytical profile of a trispecific anti-HIV antibody

open access: yesmAbs, 2020
Proline cis-trans conformational isomerization is a mechanism that affects different types of protein functions and behaviors. Using analytical characterization, structural analysis, and molecular dynamics simulations, we studied the causes of an ...
Alessandro Masiero   +23 more
doaj   +1 more source

ANALYSIS OF STUDENTS MISCONCEPTION IN CHEMICAL EQUILIBRIUM MATERIAL USING THREE TIER TEST

open access: yesJTK (Jurnal Tadris Kimiya), 2020
This study aimed to analyze students misconception seen from the relationship between the results of the three tier test and interviews about chemical equilibrium material on the concept of determining the formula Kc, Kp, and the concept of Kc ...
Khairunnisa Khairunnisa   +1 more
doaj   +1 more source

DISTRIBUTION OF SOLUBLE AND INSOLUBLE CHEMICAL SPECIES OF CHROMIUM (III) AND (VI) IN AQUEOUS SOLUTIONS [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2014
On the basis of currently revised thermodynamic data for Cr(III) and Cr(VI) hydrolysis and photolytic equilibria in addition to original thermodynamic and graphical approach, used in this paper, the repartition of their soluble and insoluble chemical ...
Oxana Spinu
doaj  

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