There are notable characteristics, occurrence, applications (compounds, H and K lines), history, compounds, isotopes, nutrition (dietary calcium supplements, prevention of fractures due to osteoporosis, possible cancer prevention, overdose) about calcium.
Reviews on "Heterocyclic Compounds" on aspects such as synthesis, reactionmechanisms, structure complexity, properties, reactivity, stability, fundamental and theoretical studies, biology, biomedical, pharmacology, applications in material sciences.
материалы конференции, добавлен 05.03.2013
Consideration of the results of x-ray diffraction of the considered chemical compounds. Structural properties of the films of magnesium oxide. Substantiation of optimum parameters of temperature of synthesis of organic and many inorganic compounds.
статья, добавлен 30.07.2016
Critical reviews on "Heterocyclic Compounds" within topic-related volumes dealing with all aspects such as synthesis, reaction mechanisms, structure complexity, reactivity, stability, biology, pharmacological aspects, applications in material sciences.
учебное пособие, добавлен 05.03.2013
To synthesize new biologically active compounds, the reactions of electrophilic substitution of 1-(4-hydroxyphenyl)-3-(4-nitrophenyl)-5-ethyl-1, 2, 4-triazole (I) have been studied. The structure of the new compounds was confirmed by 1H NMR spectra.
статья, добавлен 27.07.2016
History of the free element. Isotopes, properties: physical, chemical. Potassium cations in the body. Biochemical function, membrane polarization. Filtration, excretion, potassium in the diet and by supplement. Applications: biological, food, industrial.
реферат, добавлен 13.11.2009
Plastic additives as a wide range of chemicals used by resin manufacturers, compounds and manufacturers to improve the properties, processing and characteristics of polymers. Features of their chemical composition and conditions of effective use.
статья, добавлен 10.03.2019
Chemical properties of sodium. Sodium compounds are important to the chemical, glass, metal, paper, petroleum, soap, and textile industries. History of appearance of sodium. The serum sodium and urine sodium.
реферат, добавлен 09.03.2010
Synthesis ferroelectric compounds Sr(B1/3Nb2/3)O3 by solid state reaction technique. Consideration of the correlation between the dielectric response and transport behavior. Emprovement dielectric material properties. Motion energy storage devices.
статья, добавлен 30.07.2016
Platinum as a chemical element, six it naturally occurring isotopes. History of the discovery of this metal. Use as precious metal. Industrial applicability alloys containing platinum in catalytic converters, laboratory equipment, dentistry equipment.
презентация, добавлен 27.10.2014
History of the nucleophilic substitution of hydrogen in aromatic compounds, obtaining picric acid. Survey of SNH Substitution. Heterocyclizations Based on SNH Reactions. Intramolecular One-Step SNH Cyclizations; cascade Sequences Based on SNH Reactions.
научная работа, добавлен 05.03.2013
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