Химические науки список научных статей

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...

Бұл мақалада мақсары майының құрамы, органолептикалық көрсеткіштері, физикалық-химиялық көрсеткіштерінің зерттеулері келтірілген. Өсімдік майларының сапасын сараптауды жүргізу тәртібі көрсетілген.

The composition of oil deposits in pipelines during oil pumping was investigated. In the experiments, they applied atomic adsorption, chromatography-mass spectrometry, gamma spectrometry. It was found that 20% of the deposits are paraffins, resins and heavy fractions of oil, and 80% are asphaltenes ...

The problem of cleaning waste water from oil and oil products is of great importance both for the protection of water resources from pollution and for the extraction of additional oil resources from oil-containing waters. The dependences of the radiation-chemical yield of heptane decomposition on...

Maqolada enterosorbent xususiyatga ega dorilarning zamonaviy nomenklaturasini mahalliy xom ashyolar hisobiga kengaytirish maqsadida O‘zbekistonda ro‘yhatdan o‘tgan va farmatsevtika bozorida mavjud preparatlarning tahliliy sharhini o‘tkazish natijalari keltirilgan. Olingan ma’lumotlar oshqozon-ichak ...

Has been discussed diffusion coefficients, the amount of the liquid particles sorbed by quantity, as well as the methods of determining molecular masses of polymers. We were researching liquid area’s kinetics of vapor sorption on the MCBean scale. We’ll also determine the molecular masses of...

For obtaining of porous materials natural sorbents – perlite, zeolite and diatomite were chosen. Thermal and chemical modification and then hydrophobization of the sorbents was carried out. The optimal conditions were determined; amidoaldehyde oligomers were synthesized with the aim of their usage...

The properties of natural organic, synthetic organic and inorganic materials used for picking-up oil spillages, such as oil absorption, water uptake and squeezing degree, were studied. The main methods of water purification from oil and oil products, the main types of oil sorbents, their advantages ...

работа посвящена изучению активности бинарных олово-вольфрам оксидных катализаторов различного состава в реакции окисления этанола. Установлено, что выход и распределение продуктов реакции окисления этанола сильно зависят как от температуры реакции, так и от атомного соотношения олова и вольфрама в ...

в статье изучена реакция окисления этанола на бинарных молибден-ванадий оксидных катализаторах. Установлено, что продуктами реакция окисления этанола на изученных катализаторах являются уксусная кислота, уксусный альдегид, этилен и углекислый газ. Катализаторы богатые молибденом активны в...

Как уже отмечалось выше, на основании изучения фондовой и опубликованной литературы в качестве одного из основных методов обогащения изучаемых хвостов принят флотационный.

Bu ishda ikkilamchi elektronlar spektroskopiyasi hamda fotoelektronlar spektroskopiyasi kompleks usullaridan foydalanib, Mo ga O2+ ionlarini bombardimon qilish usuli orqali Mo ni yuzida hosil qilingan MoO3 nanotuzilmalarining elektron tuzulishi va fizik – optik xususiyatlari o‘rganilgan. Hosil...

В статьи дано анализи исследования методические приемы, необходимые при макроскопическом и микроскопическом описании керна, извлекаемого при бурении нефтегазоносных скважин и являющегося основным носителем геологической информации о глубинном строении недр

the work presents the results of a study of the possibility of using industrial solid waste in construction materials. The compositions of the initial raw materials gypsum and microsilica a waste product from the production of ferroalloys at the Sumgait plant (Azerbaijan) have been determined. The...

Diffuse toxic goiter is a genetically determined autoimmune disease with a congenital defect of the immune system. With diffuse toxic goiter, the secretion of the thyroid hormones triiodothyronine (T3) and thyroxine (T4) increases, which often leads to thyrotoxicosis. Thyrotoxicosis is a clinical...