Results 11 to 20 of about 303,849 (285)

Proton-Electron Hyperfine Coupling Constants of the Chlorophyll a Cation Radical by ENDOR Spectroscopy [PDF]

open access: yes, 1977
In this paper we describe the assignment of the major coupling constants in monomer chlorophyll a cation free radical by ENDOR spectroscopy. To facilitate chemical manipulation methylpyrochlorophyllide a has been used as a stand-in, and a suite of six ...
Katz, J. J., Norris, J. R., Scheer, Hugo
core   +1 more source

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

Potential of a sunflower seed by-product as animal fat replacer in healthier Frankfurters [PDF]

open access: yes, 2020
Upcycled defatted sunflower seed flour (SUN), a by-product obtained from sunflower oil extraction, was used as an animal fat replacer to develop healthier frankfurters.
Grasso, Simona   +4 more
core   +1 more source

The influence of position in overlap joints of Mg and Al alloys on microstructure and hardness of laser welds [PDF]

open access: yes, 2013
Structure and properties of laser beam welding zone of dissimilar materials, AZ31 magnesium alloy and A5754 Aluminum alloy, are investigated. The microstructure and quality of the Mg/Al weld were studied by metallography, microhardness and optical ...
Fatih H.   +10 more
core   +6 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

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

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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