Results 71 to 80 of about 153,743 (299)

Efficient Monte Carlo Calculations of the One-Body Density [PDF]

open access: yes, 2006
An alternative Monte Carlo estimator for the one-body density rho(r) is presented. This estimator has a simple form and can be readily used in any type of Monte Carlo simulation.
Assaraf, Roland   +2 more
core   +7 more sources

DEZVOLTAREA ABILITĂŢILOR DE AUTOFOMARE LA CHIMIE ÎN BAZA UNOR TEHNOLOGII INFORMAŢIONALE

open access: yesStudia Universitatis Moldaviae: Stiinte ale Educatiei, 2014
Posibilităţile de utilizare a tehnologiilor educaţionale pentru sporirea calităţii procesului de instruire la chimie sunt diverse: de la jocuri cu caracter cognitiv până la programe specializate pentru determinarea compoziţiei şi structurii compuşilor ...
USM ADMIN
doaj  

Anomeric Amides: Valuable Reagents in Synthetic Organic Chemistry

open access: yesAngewandte Chemie International Edition, EarlyView.
Enabling late‐stage transformations and skeletal editing, anomeric amides have recently emerged as powerful synthetic tools. Due to their unique properties, anomeric amides have been employed in reactions ranging from amination to halogenation. This minireview provides an overview of recent progress in using anomeric amides across a variety of ...
Arushi Garg   +3 more
wiley   +1 more source

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

1-Decyl-6-nitro-1H-benzimidazol-2(3H)-on [PDF]

open access: yes, 2011
The title mol­ecule, C17H25N3O3, is built up from fused six- and five-membered rings linked to a –C10H21 chain. The fused-ring system is essentially planar, the largest deviation from the mean plane being 0.009 (2) Å.
Bolte, Michael   +5 more
core  

Step-like magnetization in a spin-chain system: Ca3Co2O6 [PDF]

open access: yes, 2005
Due to a ferromagnetic in-chain coupling between Co$^{3+}$ ions at trigonal sites, chains Co$_2$O$_6$ are considered as large rigid spin moments. The antiferromagnetic Ising model on the triangular lattice is applied to describe an interchain ordering ...
Kudasov, Yuri B.
core   +1 more source

Electromembrane Extraction for Multiclass Pesticide Assessment in Soil Matrices: Sustainable Analytical Insights

open access: yesAnalysis &Sensing, EarlyView.
The U‐shaped electromembrane extraction with liquid chromatography‐mass spectrometry enables rapid multiclass pesticide screening in soil. The 15 min, low‐solvent workflow achieves high recoveries and robust linearity, while AGREEprep and GAPI assessments highlight a greener profile compared to literature reports, which represents a smart strategy for ...
Rafael O. Martins   +9 more
wiley   +1 more source

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  

Inhomogeneous Gain Saturation in EDF: Experiment and Modeling

open access: yes, 2011
Erbium-Doped Fiber Amplifiers can present holes in spectral gain in Wavelength Division Multiplexing operation. The origin of this inhomogeneous saturation behavior is still a subject of controversy.
Boivin, David   +4 more
core   +1 more source

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