Химические науки список научных статей

Maqolada qishloq xo‘jaligi uchun fosforga bo‘lgan talabning ortib borishi sharoitida tobora dolzarb bo‘lib borayotgan aznekli fosforitlardan oddiy fosforli o‘g‘itlar olishning fizik- kimyoviy texnologiyasi asoslari ko‘rib chiqilgan. aznekli fosforitlarning kimyoviy tarkibi va mineralogiyasi,...

In recent years, environmentalists have been increasingly focused on issues related to the impact of bottom sediments formed during long-term discharge of industrial wastewateron water quality in water bodies. Bottom sediments can accumulate significant amounts of trace elements of natural and...

Особое внимание исследователей к сложным оксидам металлов со структурой граната связано с их широким применением в химической промышленности, микрои оптоэлектронике. Редкоземельные гранаты состава Ln3M5O12, где M это Ga, Al или Fe, применяются в твердотельных лазерах, микроволновых и ультразвуковых ...

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Биз ғўза коллекциясидан шўрга бардошли коллекцион нав намуналаридан Қорақалпоғистон шароитида ўрганиб, шўрга бардошли бўлган F4намуналарни аниқлаб, улар асосида амалий селекция учун бошланғич ашёлар яратиш

Tabiatda turli erituvchilar mavjud bo‘lib ular moddalarning turlariga va xossalariga qarab tanlanadi. Olib borilgan tadqiqotlarda bir nechta erituvchilar xossalari o‘rganilib, sholi poyasining va undan olinadigan sellyulozani eritish va undan quyi molekular moddalarni ajratib olish imkoniyatlari...

Impact of the process of modification on graphite structure at the application of fluorine-containing oligomer chloroperfluorododecylfluoro sulfate has been studied. It was shown that during this process graphite structure doesn’t change. Only particles of chloroperfluorododecylfluoro sulfate are...

Ultratovush kuchini ko‘proq darajada oshirish GS fraktsiyasi tarkibidagi sholi poyasi biomassasidan va kamroq darajada lignin fraktsiyasi tarkibidagi aralashmalarni olib tashlashga yordam beradi

The microwave field influence on the physicochemical properties of collagen and gelatin was studied. It is shown that when microwave field acts on the studied protein samples, a change in the molecules structure formation occurs. It was experimentally established that microwave exposure leads to...

Ushbu maqolada polikondensatsiya reaktsiyasi orqali melamin, karboamid, formalin va tozalangan ammofos (MFKA) asosida sintez qilingan sorbent bo'yicha tadqiqot olib borildi. Olingan MFKA sorbenti bilan Cu(II) ioni bilan hosil qilgan metallokompleksing Raman spektrlari o'rganilgan va tahlil qilindi

Gossipol asosida olingan Shiff asoslari ayrim metallar bilan maxsus sharoitlarda o’ziga xos rangli birikmalar hosil qiladi. Gossipol birikmalarining ushbu xossalariga asoslanib ularni analitik kimyoda metall ionlarini aniqlashda reagent sifatida ishlatilishi mumkin. Ushbu maqolada Co3+ kationini...

This article focuses on enhancing the processes and equipment for producing humectants used in agriculture to improve soil moisture retention and crop yield. It explores advancements in the design and efficiency of production devices, including optimized chemical processes and environmentally...

В работе приведены результаты исследований по разработке технологии получения гранулированного суперфосфата путём двухстадийного разложения низкосортных фосфоритов Центральных Кызылкумов концентрированной серной кислотой в ангидритном режиме. Показана зависимость коэффициента разложения различных...

Ишда SiО2/ZnO-10%CoO+ПЭГ таркибли газсезгир материал асосида ишлаб чиқилган метанни аниқловчи яримўтказгичли сенсор ЯЎС-СН4 нинг ишлаш ресурси ва сигналининг селективлиги текширилган. Ўтказилган синовларда сенсор сигнали қисқа оралиғда ўзгарган ва бу ўзгариш натижасида юзага келган хато қиймати...

Mixed novolac-type oligomers are synthesized in the melt on the base of oxibenzene and its alkilsubstituted. The content of dioxibenzene changes in the range of 0,1 – 0,5 mol. The influence of temperature and duration of the reaction of initial components, transformation has been studied.

Glycidyl ethers of polycyclic bisphenols of norbornan type and their phenyl substituted derivatives were obtained and studied. They were solidified by diaminodiphenylsulphon and methyltetrahydrophthalic anhydride. The data of the termogravimetric analysis of the obtained polymers showed that they...

Aromatic polyesthers were synthesized on the base of policiclicbisphenols and dichloroanhydride of aromatic dicarboxylic acid by the method of equilibrium polycondensation in solvent. The obtained polymers are characterized by high heat-and thermal stability, are well soluble in chlorinated...

The effect of hardeners on the properties of cured epoxy polymers is studied. For the purpose of synthesis of polymers with increased thermal properties. Theglycide esters of polycyclic bisphenols synthesized by us were used as a diol component. Since the thermal and heat resistance of polymers, in ...

Малые пептиды (С-3-Б-бета) яда среднеазиатской кобры замедляют окисление суксината в митохондриях печени крыс. Снижение уровня окислительного фосфорилирования(V3) приводит к резкому снижению индекса дыхательного контроля и соотношения АДФ/Г. Этот пептид в первую очередь снижает активность...

Aromatic polyesthers were synthesized on the base of policiclicbisphenols and dichloroanhydride of aromatic dicarboxylic acid by the method of equilibrium polycondensation in solvent. The obtained polymers are characterized by high heat-and thermal stability, are well soluble in chlorinated...

Химия гетероциклических соединений постоянно привлекает внмание иследователей. Нeyклoннo вoзрaстaющee внимaниe к гетероциклическим соединениям стимyлирyeтся oбнaрyжeниeм y них рaзнooбрaзнoй биoлoгичeскoй aктивнoсти. Особый интерес представляет химия гетероциклических соединений, имеющих в системе...