Химические науки список научных статей

Для обнаружения ионов кобальта в сточных водах и технологических растворах производства меди и цинка АО «Алмалыкский» ГМК в качестве органического аналитического реагента выбран 2-нитрозо-1-нафтол. 2-Нитрозо-1-нафтол иммобилизует органический реагент на различные волокнистые носители, обнаруживает...

Рекомендовано определение иона меди (II) с раствором 1-(2-гидрокси-1-нафтоазо)-2-нафтол-4-сульфоновой кислоты (ГННC) экстракционно-спектрофотометрическим и циклическим вольтамперометрическим методами. Изучены оптимальные условия: коэффициент распределения 0.97, выбор органического растворителя,...

Доказано, что исследуемые растительные порошкообразные полуфабрикаты, обладающие детоксициру-ющим, энтеросорбционным, сахаропонижающим и другим позитивным воздействием на организм человека, можно позиционировать в качестве обогатителей хлебобулочных и мучных кондитерских изделий. Установлено, что в ...

Методом индуктивно-связанной масс-спектрометрии (ИСП-МС) проведено сравнительное исследование количества макрои микроэлементов и солей тяжелых металлов в стволе дерева Cydonia oblonga Miller, произрастающего в различных климатических условиях Республики Узбекистан. Результаты анализа показали, что...

В медицине многие лекарственные растения имеют бесценное значение благодаря своим лечебным свойствам, и редька (Brassica rapa) несомненно не является исключением из-за своих замечательных целебных качеств. Известно, что лекарственные растения содержат множество витаминов и минералов, и листья...

Методами термогравиметрического анализа (ТГА) и дифференциально-термического анализа (ДТА) изучена термическая стабильность смешанно-лигандного комплекса Cu(II), Ni(II), Zn(II), синтезированного с 1,10-фенантролином. Термическое поведение всех металлокомплексов было изучено в интервале температур...

Состав рафината, выделенного из отходного «жёлтого масла», образующегося при очистке пирогаза растворами щелочей, был исследован методом инфракрасной спектроскопии. Результаты спектрального анализа рафината подтвердили, что он представляет собой макромолекулу кротонового альдегида, полимеризованную ...

As we know, macroand microelements need to be at normal levels for human health. They enter the body through the consumption of food products. This article examines the macro and microelement content, as well as the flavonoid levels, of common hazelnuts grown in Uzbekistan through experimental...

Бұл мақалада бейорганикалық химия сабағында анимация мен симуляцияларды қолданудың ерекшеліктері кеңінен талқыланады. Анимациялар мен симуляциялар химиялық процестерді көрнекі түрде көрсету, студенттердің ғылыми түсініктерін тереңдету, сондай-ақ оқу процесін интерактивті және қызықты ету үшін...

Extraction methods were used to obtain alcohol and water extracts of chestnut. Cattle skins were treated with the extract, washed and dried. IR spectra of the inner and outer sides of dried cattle skins were recorded and the corre-sponding absorption curves were studied. Valence and deformation...

The article discusses the degree of environmental adversity and its implications on the functional adaptation pat-tern in Karakalpakstan schoolchildren, one of the most ecologically deprived territories due to the effects of the Aral Sea catastrophe. Key functional measures-parameters of...

The aim of the study was to identify amino acids in the waste products of a silkworm feeding on mulberry leaves. The qualitative and quantitative analysis of amino acids contained in mulberry leaves and silkworm waste was investigated by high-performance liquid chromatography. 18 types of amino...

The article provides information on the results of research into the conditions for obtaining As2S5 in an organic me-dium. Based on the results of thermogravimetric (TG) and scanning electron microscopic (SEM) analysis, it was deter-mined that As2S5 is obtained when sodium arsenate solution is...

Optimum methods of synthesis of copper(II) m-hydroxybenzoate complex compound with sodium glycinate were studied based on literature analysis and synthesis was carried out. The factors affecting the synthesis of the resulting complex compound in room conditions were shown. In particular, the...

Comparison of the structural parameters of the monosubstituted complex (tBuCp)2Mo2(CO)6 (1) with the corresponding structural parameters of the disubstituted (1,2-tBu2Cp)2Mo2(CO)6 (3) and unsubstituted Cp2Mo2(CO)6 (2) complexes allowed us to identify the features of the crystal structure (3) caused ...

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It’s known that hydropurification process of diesel fuels leads to elimination of sulfur-, nitrogenand oxygen-containing compounds in their composition and causes in a violation of chemical stability, compensated by the use of additives. Heteroatom-containing phenol and alkylphenol-formaldehyde...

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Pharmaceutical polymers based on glycogen as prodrugs were synthesized to enhance the physical and chemical properties, thereby increasing the solubility of the drugs compared to the original drugs. This improvement leads to better efficacy and bioavailability, enhancing their absorption and...

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In world practice, additives based on alkylphenols have become widespread. This distribution of alkylphenol additives is explained by a wide range of performance properties, the relative availability of raw materials and simple production technology compared to the production of other additives....

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H-Zeolite was successfully prepared from a homogenous solution under controlled conditions using a thermal approach with tetramethylammonium bromide as an organic structural directing agent (OSDA), which adjusts the pores size of zeolitic networks and then increases the catalyst efficiency. The...

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In this article, BN 90/30 brand bitumen is modified by adding 5% to 15% acrylic copolymers containing Cu, Zn, Ni, and Sn metals, along with up to 24% sulfur. Copolymers based on acrylic and methyl methacrylate with metals (Ni, Sn, Cu, Zn) were used. Different masses were mixed in a heat-resistant...

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