Results 21 to 30 of about 1,815,522 (171)

Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry

open access: yesHeliyon, 2016
Thermal decomposition and kinetics behaviour of the de-oiled seed cake of African star apple (Chrosophyllum albidum) has been investigated using thermogravimetry under the nitrogen atmosphere from ambient temperature to 900 °C. The thermogravimetric data
M.A. Sokoto   +4 more
doaj   +1 more source

Why Are There So Few Women in Physics? Reflections on the Experiences of Two Women

open access: yes, 2020
Some of the reasons for the underrepresentation of women in physics are evident in the reflections of two undergraduate women. Leia is a chemistry major who loves college-level physical chemistry and quantum mechanics but does not identify with the ...
Doucette, Danny, Singh, Chandralekha
core   +1 more source

A kinetic study on the degradation and biodegradability of silver nanoparticles catalyzed Methyl Orange and textile effluents

open access: yesHeliyon, 2019
The present study includes the Azadirachta indica (neem) induced Silver nanoparticles (AgNPs) by green synthesis as reducing and capping agent. Synthesized AgNPs were characterized by different instrumental techniques such as XRD (X-ray Diffraction), SEM
Niharika Nagar, Vijay Devra
doaj   +1 more source

Simulation of Heme using DFT+U: a step toward accurate spin-state energetics [PDF]

open access: yes, 2007
We investigate the DFT+U approach as a viable solution to describe the low-lying states of ligated and unligated iron heme complexes. Besides their central role in organometallic chemistry, these compounds represent a paradigmatic case where LDA, GGA ...
Cococcioni, Matteo   +3 more
core   +2 more sources

Introduction to Physical Chemistry [PDF]

open access: yesNature, 1900
IT is now nearly ten years since Prof. Walker placed English students under obligation by his admirable translation of Ostwald's “Outlines of General Chemistry.” Since that time “little Ostwald” has been the source from which most students have taken their first draught of information about physical chemistry in its modern form.
openaire   +3 more sources

Warm Cores around Regions of Low-Mass Star Formation

open access: yes, 2010
Warm cores (or hot corinos) around low-mass protostellar objects show a rich chemistry with strong spatial variations. This chemistry is generally attributed to the sublimation of icy mantles on dust grains initiated by the warming effect of the stellar ...
André   +39 more
core   +1 more source

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