Results 11 to 20 of about 305,249 (209)

Tunable Hydrogen Storage in Magnesium - Transition Metal Compounds [PDF]

open access: yes, 2008
Magnesium dihydride ($\mgh$) stores 7.7 weight % hydrogen, but it suffers from a high thermodynamic stability and slow (de)hydrogenation kinetics. Alloying Mg with lightweight transition metals (TM = Sc, Ti, V, Cr) aims at improving the thermodynamic and
Brocks, G.   +4 more
core   +4 more sources

Struvite Grown in Gel, Its Crystal Structure at 90 K and Thermoanalytical Study

open access: yesCrystals, 2019
In this article, we report the crystallization of struvite in sodium metasilicate gel by single diffusion gel growth technique. The obtained crystals have a very rich morphology displaying 18 faces. In this study, the habit and morphology of the obtained
Jolanta Prywer   +2 more
doaj   +1 more source

Tea as a Source of Biologically Active Compounds in the Human Diet

open access: yesMolecules, 2021
Due to the different levels of bioactive compounds in tea reported in the literature, the aim of this study was to determine whether commercially available leaf teas could be an important source of phenolics and selected minerals (copper, manganese, iron,
Joanna Klepacka   +4 more
doaj   +1 more source

Heat-resistant magnesium-based alloys for aircraft casting [PDF]

open access: yesМеталознавство та обробка металів, 2020
The necessity of increasing the mechanical properties and heat resistance of aviation magnesium case casting is demonstrated. The choice of alloying elements to improve the installation characteristics of the Mg-Al-Zn system is justified.
V.A. Shalomeev   +3 more
doaj   +1 more source

Effect of Al addition on microstructure of AZ91D [PDF]

open access: yes, 2014
Casting is a net shape or near net shape forming process so work-hardening will not be applicable for improving properties of magnesium cast alloys.
Chen   +13 more
core   +1 more source

Epsomite as flame retardant treatment for wood: Preliminary study [PDF]

open access: yes, 2016
The effect of epsomite as flame retardant for wood has been investigated and compared with a commercial boron salt. Both flame retardants have been introduced into wood samples by vacuum impregnation.
Chimenos Ribera, Josep Maria   +5 more
core   +2 more sources

GC-MS Analysis of the Composition of the Extracts and Essential Oil from Myristica fragrans Seeds Using Magnesium Aluminometasilicate as Excipient

open access: yesMolecules, 2019
Myristica fragrans (f. Myristicaceae) seeds are better known as a spice, but their chemical compounds may have a pharmacological effect. The yield of their composition of extracts and essential oils differs due to different methodologies. The aim of this
Inga Matulyte   +5 more
doaj   +1 more source

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

THERMOELECTRIC PROPERTIES OF HOT-PRESSED p-TYPE Mg2Si0.3Sn0.7 SOLID SOLUTION [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2014
It is shown that thermoelectric energy conversion which gives the possibility for utilizing a low potential heat is one of the ways for adoption of energy-saving technologies; and semiconductor materials with p-type and n-type conductivities having high ...
G. N. Isachenko   +6 more
doaj  

Magnesium-Molybate Compounds as Matrix for 99Mo/99mTc Generators

open access: yesPharmaceuticals, 2011
This work reports the preparation of a 99mTc generator based on conversion of 99Mo produced by neutron irradiation, into insoluble magnesium 99Mo-molybdates compounds as matrix. The effect of magnesium salt types and concentration, Mg:Mo molar ratios, pH
Fabiola Monroy-Guzman   +3 more
doaj   +1 more source

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