Химические науки список научных статей

Copper-tin and copper-antimony chalcogenides have received increasing attention as promising thermoelectric materials due to their high efficiency and low toxicity. Many of these phases are synthetic analogues of natural copper chalcogenide minerals and have been drawing more interest for the...

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CAS

The possibility of electrochemical deposition of tin‒bismuth alloy with an increased tin quota which is in demand for microassembly in electronics was revealed. Modification of the acid EDTA electrolyte with hydroxyl-containing surfactants differing in the length of hydrocarbon chain and the number ...

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CAS

Removal of paracetamol from aqueous solution onto carbon material obtained from nectarine kernel by the original technology was studied in this work. Process performance was observed by varying the experimental features, such as retention time, particle size, adsorbent dose, solution pH, and...

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CAS

The aim of the work is the synthesis of monoand binuclear complexes of platinum (II) and palladium (II) containing terminal and bridging atoms of chlorine and sulfur as ligands and the study of their biological activity in relation to test cultures of Bacillus subtilis B4647, Aspergillus...

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CAS

A series of fused heterocyclic compound triazolotetrazine were prepared from the reaction of equimolar amount of 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol via cyclization addition reaction with different aromatic aldehydes in presence of piperidine as catalyst to produce the target...

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CAS

The impact of the depth of selection of narrow gas oil fractions of Azeri-Chirag-Guneshli oils on the yield and quality of catalytic cracking products was studied. The impact of fractional and group hydrocarbon composition on the main directions of cracking is analyzed. 5 types of gas oil fractions ...

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CAS

Environmental pollution with heavy metals is a problem of worldwide importance due to their toxicity and potential health risks. Among the heavy metals found in industrial waters are such toxic metals as Cd(II), Zn(II), and Cr(VI). In this study, the potential of Georgian natural and modified...

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CAS

The effect of calcination temperature in air of finely dispersed boehmite powders with ferrocene adsorbed at room temperature from n-hexane solution on X-ray diffraction patterns and EPR spectra of calcined samples was studied. It has been shown that calcination in air of boehmite samples with...

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CAS

This study included the preparation of Schiff base derivatives (Z1-Z5) derived from 2bromoisophthaladehyde with aniline substitutes. By the reaction of prepared compounds with sodium azide using dioxane as a solvent a pentacyclic rings derived from tetrazole (Z6-Z10) were obtained. The prepared...

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CAS

The effectiveness study results related to "soft" multi-stage crushing mode of concrete scrap are presented. During the research it was found that the processing of concrete scrap using this technology can significantly improve the characteristics of the secondary concrete aggregate, namely...

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CAS

An accurate and simple indirect spectrophotometric method has been created for the microdetermination of Methyldopa (MDP) and Dopamine hydrochloride (DA) in acidic media. The method was based on the catalytic oxidation reaction between Orang-G and N-bromosuccinimide in an acidic medium which could...

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CAS

In the presented article, the interaction of zinc oxide nanoparticles with the main photosynthetic pigment chlorophyll was investigated using UV-vis and laser-induced fluorescence spectroscopy. Chlorophyll pigment was isolated from the leaves of 10-day-old bean sprouts by a standard method....

Бұл мақалада ақпараттық технологияларды қолдану арқылы 8-сыныптың «Бейорганикалық қосылыстардың негізгі кластары. Генетикалық байланыс» тарауын оқытудың әдістемесі қарастырылады. Заманауи білім беру үрдісінде цифрлық құралдар химия пәнін оқытуда оқушылардың материалды терең түсінуіне, визуализация...

Білім беру қызметінің негізгі мақсаты заманауи білім беру технологияларын енгізу және интеграциялау арқылы білім беру сапасын арттыру болып табылады, осы арада электрондық ресурстар жетекші рөл атқарады. Оқушылардың химия пәніне тұрақты оң қызығушылығын қалыптастыру және олардың өзіндік таным...

This article examines the various sources and mechanisms of phosphate waste generation in various industries. It analyzes the processes of formation, chemical composition and properties of phosphate waste, as well as the impact on the environment. In order to reduce the negative impact on the...

В работе представлены результаты анализа морфологии и качества семян вечнозеленого кустарника Danaë racemosa (L.) Moech. (Asparagaceae), естественным ареалом которого являются территории севера Турции, Сирии, Закавказье и Иран. Вид успешно акклиматизирован на южном береге Крыма. Высокая...

Мақалада мектеп физика курсының «Ядролық физика» тарауын цифрлық технологиялар көмегімен оқытудың әдістері қарастырылады. Ядролық реакциялар тақырыбын оқушыларға тиімді жеткізу үшін виртуалды зертханалар, анимациялар, интерактивті презентациялар және Go-Lab платформасы қолданылды. Жұмыста Go-Lab...

Respublikamizda mevalardan katta hajmda va keng assortimentda sharbatlar ishlab chiqariladi. Ularni olish uchun fermentativ qayta ishlash, maqsadli fermentatsiya kabi zamonaviy usullar amalda qo'llanilmaydi. Ushbu usullarning istiqbollari nafaqat tejamkor texnologik rejimlardan foydalanish,...

в этой статье рассматриваем роль фолиевой кислоты, а также проблемы связанное с нехваткой фолиевой кислоты.

Методом рентгенофазового анализа установлено, что при совместном электроискровом диспергировании титана со сплавом V-Mo в гептане происходит образование сложных карбидов (TiхVуМоz)C с кубической решеткой. Предполагая, что сложные карбиды (TiхVуМоz)C как квазибинарные системы, где в кубическом...