Results 21 to 30 of about 390,003 (343)

ANALISIS MISKONSEPSI ASAM BASA CALON GURU KIMIA DENGAN METODE THREE-TIER TEST

open access: yesJurnal Pendidikan Sains Universitas Muhammadiyah Semarang, 2020
This study aims to identify the misconceptions of a prospective chemistry teacher. The study population was all students of the Chemistry Study Program at the University of Riau, while the sample was 66 students at the Chemistry Study Program at the ...
Abdullah Abdullah
doaj   +1 more source

Impact of acidity and surface-modulated acid dissociation on cloud response to organic aerosol [PDF]

open access: yesAtmospheric Chemistry and Physics
Acid dissociation of the organic aerosol fraction has the potential to impact cloud-activating properties by altering aqueous-phase H+ concentrations and water activity but is currently overlooked in most atmospheric aerosol models.
G. Sengupta   +3 more
doaj   +1 more source

Hypervelocity Richtmyer–Meshkov instability [PDF]

open access: yes, 1997
The Richtmyer-Meshkov instability is numerically investigated for strong shocks, i.e., for hypervelocity cases. To model the interaction of the flow with non-equilibrium chemical effects typical of high-enthalpy flows, the Lighthill-Freeman ideal ...
Meiron, Daniel I., Samtaney, Ravi
core   +1 more source

CO2 Dissociation using the Versatile Atmospheric Dielectric Barrier Discharge Experiment (VADER)

open access: yesFrontiers in Physics, 2014
Dissociation of CO2 is investigated in an atmospheric pressure dielectric barrier discharge (DBD) with a simple, zero dimensional (0-D) chemical model and through experiment.
Michael Allen Lindon, Earl eScime
doaj   +1 more source

MENTAL MODEL OF PROSPECTIVE CHEMISTRY TEACHER ON EQUILIBRIUM CONSTANT AND DEGREE OF DISSOCIATION

open access: yesJurnal Kependidikan: Penelitian Inovasi Pembelajaran, 2019
MODEL MENTAL CALON GURU KIMIA PADA KONSEP TETAPAN KESETIMBANGAN DAN DERAJAT DISOSIASI Abstrak Penelitian ini bertujuan untuk mengeksplorasi model mental calon guru kimia pada konsep tetapan kesetimbangan dan derajat disosiasi.
Anggra Prasetya Cahya   +2 more
doaj   +1 more source

The Roasting Marshmallows Program with IGRINS on Gemini South I: Composition and Climate of the Ultrahot Jupiter WASP-18 b

open access: yesThe Astronomical Journal, 2023
We present high-resolution dayside thermal emission observations of the exoplanet WASP-18 b using IGRINS on Gemini South. We remove stellar and telluric signatures using standard algorithms, and we extract the planet signal via cross-correlation with ...
Matteo Brogi   +21 more
doaj   +1 more source

The terminator "toy" chemistry test: a simple tool to assess errors in transport schemes [PDF]

open access: yesGeoscientific Model Development, 2015
This test extends the evaluation of transport schemes from prescribed advection of inert scalars to reactive species. The test consists of transporting two interacting chemical species in the Nair and Lauritzen 2-D idealized flow field. The sources
P. H. Lauritzen   +4 more
doaj   +1 more source

DESVENDANDO REAÇÕES E COLISÕES: COMO A QUÍMICA QUÂNTICA COMPUTACIONAL ASSISTE NO ENTENDIMENTO DAS FRAGMENTAÇÕES NA ESPECTROMETRIA DE MASSAS TANDEM POR COLISÃO [PDF]

open access: yesQuímica Nova
Tandem mass spectrometry (MS/MS) occupies a central position in experimental and analytical sciences, with collision-induced dissociation (CID) standing out as a fundamental technique for investigating molecular structures.
Vinicius Kuchenbecker   +1 more
doaj   +1 more source

Water formation on bare grains: When the chemistry on dust impacts interstellar gas [PDF]

open access: yes, 2010
Context. Water together with O2 are important gas phase ingredients to cool dense gas in order to form stars. On dust grains, H2 O is an important constituent of the icy mantle in which a complex chemistry is taking place, as revealed by hot core ...
Akai   +53 more
core   +4 more sources

Research Progress of Free Radical Chemistry-Tandem Mass Spectrometry for Fine Structure Analysis of Lipids [PDF]

open access: yesZhipu Xuebao
As one of the six major nutrients, lipids play important roles in various biological processes, including cell membrane construction, signal transduction, and energy metabolism.
JIAN Rui-jun, XIA Yu
doaj   +1 more source

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