Results 31 to 40 of about 303,849 (285)

Chlorophylls - natural solar cells [PDF]

open access: yes, 2011
A molecular modeling study was conducted on a series of six natural occurring chlorophylls. Quantum chemistry calculated orbital energies were used to estimate frequency of transitions between occupied molecular orbital and unoccupied molecular orbital ...
Balan, Mugur C.   +3 more
core   +3 more sources

Marketing of the Magnesite Industry in Slovak Republic [PDF]

open access: yesActa Montanistica Slovaca, 2000
The reserve base is 3400 million tonnes of magnesium content. Identified world resources of magnesite total some 12 billion tonnes, and there are also large resources of magnesium-bearing substitutes such as dolomite, brucite and olivine.
Csikósová Adriana
doaj  

On the Balance of Intercalation and Conversion Reactions in Battery Cathodes

open access: yes, 2018
We present a thermodynamic analysis of the driving forces for intercalation and conversion reactions in battery cathodes across a range of possible working ion, transition metal, and anion chemistries.
Canepa, Pieremanuele   +3 more
core   +1 more source

Carbon doping of superconducting magnesium diboride

open access: yes, 2002
We present details of synthesis optimization and physical properties of nearly single phase carbon doped MgB2 with a nominal stoichiometry of Mg(B{0.8}C{0.2})2 synthesized from magnesium and boron carbide (B4C) as starting materials.
Bean   +31 more
core   +2 more sources

Magnesium Regulation Increases the Content of Characteristic Volatile Compounds and Enhances the Intensity of Odor Characteristics in Tea Tree Leaves

open access: yesFoods
Magnesium plays an important role in regulating the growth and quality of tea trees. However, the effect of magnesium regulation on changes in the aroma quality of tea tree leaves remains unknown. In this study, the volatile compounds of tea leaves under
Jianghua Ye   +10 more
doaj   +1 more source

The Study of Regularities of Changing Melting Enthalpy of Intermetallides of Magnesium–Lantanoids Systems Rich in Magnesium

open access: yesГорные науки и технологии, 2019
Providing a reasonable forecast of the required properties of intermetallic compounds (hereinafter also referred as intermetallides or IM) is an important scientific and commercial problem, which may be solved by focusing scientific researches and ...
I. R. Ismoilov   +4 more
doaj   +1 more source

New class of compounds have very low vapor pressures [PDF]

open access: yes, 1967
Magnesium hexahydrate tetrachlorometallates are 50-volume-percent water, have a high melting point and possess a low vapor pressure. These new compounds are relatively noncorrosive, thermally stable, and water soluble but not hygroscopic.
Angell, C. A., Gruen, D. M.
core   +1 more source

Human Amniocytes Are Receptive to Chemically Induced Reprogramming to Pluripotency [PDF]

open access: yes, 2017
Restoring pluripotency using chemical compounds alone would be a major step forward in developing clinical-grade pluripotent stem cells, but this has not yet been reported in human cells.
Adjaye, J   +15 more
core   +4 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

PREPARATION MAGNESIUM DIBORIDE BY MAGNIATHERMAL BORON OXIDE BASED ON SUPERCONDUCTING PROPERTIES

open access: yesАлматы технологиялық университетінің хабаршысы, 2021
Results of receiving a diborid of magnesium are given in work by magniathermal oxidation of boron composite compounds at different argon pressures and temperatures. The relevance of a research is proved by superconducting properties of magnesium diboride.
A. N. Alipbayev   +2 more
doaj  

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