Results 71 to 80 of about 150,649 (280)

La chimie et l'industrie papetière

open access: yesCHIMIA, 2011
This short paper presents the relationship between the pulp and paper industry and chemistry. The history of this industry is presented including current paper production and consumption statistics.
Olivier Naef
doaj   +1 more source

Novel Porous Polymorphs of Zinc Cyanide with Rich Thermal and Mechanical Behavior

open access: yes, 2015
We investigate the feasibility of four-connected nets as hypothetical zinc cyanide polymorphs, as well as their thermal and mechanical properties, through quantum chemical calculations and molecular dynamics simulations.
Boutin, Anne   +2 more
core   +5 more sources

O NOUĂ ETAPĂ ÎN MODERNIZAREA ÎNVĂŢĂMÂNTULUI PREUNIVERSITAR LA CHIMIE

open access: yesStudia Universitatis Moldaviae: Stiinte ale Educatiei, 2007
Ce matériau scientifique et méthodique décrit les étapes du développement de l’enseignement de la chimie, de la reforme curriculaire, les types d’élaborations et d’implantations, qu’ ont réalisées dans la période des années 1995-2007 les membres du ...
USM ADMIN
doaj  

Chemistry [PDF]

open access: yes, 1967
published or submitted for ...
Mellon, M.G., Power, Ruth T.
core  

Stark Echo Modulation for Quantum Memories

open access: yes, 2016
Quantum memories for optical and microwave photons provide key functionalities in quantum processing and communications. Here we propose a protocol well adapted to solid state ensemble based memories coupled to cavities.
Arcangeli, A., Ferrier, A., Goldner, Ph.
core   +1 more source

Troubleshooting Time-Dependent Density-Functional Theory for Photochemical Applications: Oxirane [PDF]

open access: yes, 2007
The development of analytic-gradient methodology for excited states within conventional time-dependent density-functional theory (TDDFT) would seem to offer a relatively inexpensive alternative to better established quantum-chemical approaches for the ...
Casida, Mark E.   +5 more
core   +2 more sources

IMPERATIVE DE PERFECŢIONARE A ACTIVITĂŢII PROFESORULUI DE CHIMIE

open access: yesStudia Universitatis Moldaviae: Stiinte ale Educatiei, 2013
Reforma curriculară realizată în ultimii 10 ani solicită profesorului de chimie şi, de fapt, cadrelor didactice per ansambru noi competenţe de specialitate pentru a aplica în practică paradigma curriculară de ultimă oră.
USM ADMIN
doaj  

ACDV, Association Chimie du Végétal : une initiative française pour développer la chimie du végétal

open access: yesOléagineux, Corps gras, Lipides, 2013
Industry dependence on external fossil fuel resources, fluctuations in energy and raw materials costs, climate change, environmental regulations, changing consumer attitudes etc.
Friès Aurore
doaj   +1 more source

La chimie dans l’espace

open access: yesEducación Química, 2018
La materia puede observarse y estudiarse macroscópicamente y los fenómenos observados muchas veces se interpretan dando explicaciones a nivel de átomos y moléculas. A su vez, ambos niveles se pueden representar mediante símbolos.
Héctor S. Odetti, Marta Perren
doaj   +1 more source

Optimization of pressurized liquid extraction using a multivariate chemometric approach and comparison of solid phase extraction cleanup steps for the determination of polycyclic aromatic hydrocarbons in mosses [PDF]

open access: yes, 2012
A factorial design was used to optimize the extraction of polycyclic aromatic hydrocarbons (PAHs) from mosses, plants used as biomonitors of air pollution.
Foan, Louise, Simon, Valérie
core   +3 more sources

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