Theoretical and experimental chemistry and modern problems of chemical technology
ВОЛФРАМ ВА МОЛИБДЕН ГЕТЕРОПОЛИКИСЛОТАЛАРИ АСОСИДА ПЛАСТИКЛАШТИРИЛГАН МЕМБРАНАЛИ ИОН-СЕЛЕКТИВ МАТЕРИАЛЛАРНИ ИШЛАБ ЧИҚИШ ТЕХНОЛОГИЯСИ.
The composition of the electrodfaolic compound is recommended, and on its basis a highly sensitive ISE technology has been developed, which provides for the identification of various drugs. Developed selective ises are proposed for use as part of an ionomer device for monitoring medicinal substances.
Суванқулов Шохжахон Баҳодир ўғли Суванқулов
Copyright (c) 2023 Theoretical and experimental chemistry and modern problems of chemical technology
ФЛОТАЦИОННОЕ ОБОГАЩЕНИЯ РУД НИЖНИХ ГОРИЗОНТОВ ДЖИЖИКРУТСКОГО МЕСТОРОЖДЕНИЯ И РЕЗУЛЬТАТЫ ИХ АНАЛИЗА
The study of the influence of various modifiers and other factors on the flotation of the studied ores from the lower horizons of the Dzhizhikrut deposit revealed the feasibility of using a simple scheme for this ore to obtain antimony concentrate. Based on the research carried out, a technological scheme for flotation of ore from this deposit is proposed. The article also examines the atomic-molecular structure of the flotation products of gold-antimony-mercury ores based on X-ray scattering. These products were analyzed on a high-tech general purpose X-ray diffractometer DRON-3.
NEFT VA GAZ SANOATIDAGI APPARATLARNI KIMYOVIY KORROZIYADAN HIMOYALASH. VA ULARNI KIMYOVIY KARROZIYADAN SAQLASH YO‘LLARI
The article provides information on corrosion problems observed in equipment and equipment at oil and gas facilities, as well as the application of correct solutions to these problems and protection depending on the type of metal in industries and enterprises, economic losses caused by corrosion in enterprises. concepts of avoidance are given.
SMART-БИОСОРБЕНТЫ НА ОСНОВЕ ПИВОВАРЕННЫХ ДРОЖЖЕЙ И НАНОСТРУКТУРИРОВАННОГО МАГНЕТИТА
The possibility and options of using a magnetically controlled sorbent based on the cell walls of brewing еast and nanostructured magnetite in biosorption technologies for remediation of wastewater and surface waters are shown.
ИЗВЛЕЧЕНИЕ СОЕДИНЕНИЙ ЛИТИЯ ИЗ ЖИДКИХ ИСТОЧНИКОВ
The article provides information on methods for separating lithium from aqueous solutions. It is shown that one of the promising methods is adsorption. Information is provided on sorbents used in the adsorption extraction of lithium.
O-FENILENDIAMIN ASOSIDA ARALASH LIGANDLI KOMPLEKSLAR SINTEZI VA SPEKTROSKOPIK TADQIQOTI
In our research work, a new bis(2-aminoanilinium)naphthalene-1,5-disulfonate (C10H6S2)2-,2(C6H9N2)+ compound with mixed ligand was synthesized using o-phenylenediamine. Based on the physico-chemical research methods, the composition, chemical formula and reaction equations of the synthesized complex compound were proposed.
AMIDATION REACTION OF MYRISTIC ACID WITH DIETHANOLEAMINE
Diethanolamine (DEA) is used in many reactions, mainly in the synthesis of heterocyclic compounds, for example, morpholines, piperazines, oxazolidines, dioxazosines, crawn ethers and ionic liquids. The reaction of fluoroalkene derivatives with diethanolamine produces eight-memebered dioxazocines. Amine-containing eight-membered cyclic boronic esters could be successfully obtained from diethanolamine and boron derivatives. The purpose of the work is to carry out the reaction of diethanolamine with myristic acid and to determine the physico-chemical and spectral properties of the reaction products.
IKKILAMCHI POLIETILENTEREFTALATNI DIETILENGLIKOL BILAN ALKAGOLIZ MAXSULOTLARI IQ SPEKTORINI O’RGANISH
The article is devoted to the study of polyethylene terephthalate (PET) waste processing, diethylene glycol alcoholysis process and IR spectrum analysis.
АНТИОКСИДАНТНЫЕ ДЕЙСТВИЯ ЖЕЛЕЗА (II) С МЕТИОНИНОМ И ИХ ИССЛЕДОВАНИЕ МЕТОДОМ СПИНОВЫХ МЕТОК
It has been established that in the compound of sulphate of iron(II) with methionin when adding ethanol to the solution with the presence of a nitroxyl radical, it is completely restored and affects to the chemical stability of the nitroxyl fragment which indicates a strong property of antioxidants.
ETILENXLORGIDRINNI TRIETILAMIN BILAN REAKSIYASINING OPTIMAL SHAROITLARINI O’RGANISH.
Organik birikmalarni sintez qilishda yangi katalizatorlarning, yangi usullarning qo‘llanilishi jarayonlarning yanada soddalashishiga, qulay usullarning metodlarni yaratishga, mahsulot unumining ortishiga, reaksiyalarning tezlashishiga olib keladi
BIS(2-(2-IZOPROPIL-5-METILFENOKSI)-2-OKSOETIL) OKSALAT SINTEZI
2- Izoprophyl-5-methylphenole is used in many reactions, mainly in the synthesis of heterocyclic compounds, for example, pirimydines, calex- arene and ionic liquids. The purpose of the work is to carry out the reaction of O-chloracetylphenole with oxalate acid and to determine the physico-chemical and spectral properties of the reaction products.
FAZALARARO KATALIZ USULIDA ALIFATIK KARBON KISLOTALAR FTALIMIDOMETIL EFIRLARI SAMARALI SINTEZI
Dekan, miristin, palmitin, stearin kislota tuzlari bilan xlormetilftalimid reaksiyasi 4,4’-diatsetildibenzo-18-kraun-6 ishtirokida fazalar aro kataliz usulida olib borilib, yuqori 82-87 % unumlar bilan karbon kislotalarining tegishli murakkab efirlari sintez qilindi. Ftalimidometil efirlarning tuzilishi xromatomass, IQ-spektori yordamida isbotlandi.
α-АМИНОНИТРИЛЛАР АСОСИДА ГЕТЕРОЦИКЛИК БИРИКМАЛАР СИНТЕЗИ
The article provides preliminary information on the use of α-aminonitriles in organic synthesis, especially in the synthesis of heterocyclic compounds. Catalysts used in their synthesis and their types, as well as information on their effect on the yield of the reaction product, are presented. Also, information on the use of cyanohydrins of various aldehydes as cyanizing reagents is given.
TARKIBIDA GETEROHALQA SAQLANGAN BIRIKMALAR ASOSIDA SETAN SONINI OSHIRUVCHI PRISADKALARNI SINTEZ QILISH TEXNOLOGIYASINI YARATISH
participation in projects to create oil production bases, as well as to reduce the cost of oil production, will ensure that their needs for oil are met, and over time, its release to other markets.
TARKIBIDA GEKSAMETILENDIAMIN TUTGAN FTALOTSIANIN PIGMENTLARINI SINTZ QILILISH VA INFRAQIZIL SPEKTROFOTOMETRIDAGI TAHLILINI O’RGANISH
In this article, the synthesis of phthalocyanine pigment containing hexamethylenediamine and optimal sharoids are presented, and the analysis of this synthesized pigment in infrared spectrophotometer is studied in comparison with other alternative pigments.
MONOXLORSIRKA KISLOTASINING BUTIL EFIRINI PIRIDIN BILAN REAKSIYALARINI O’RGANISH.
Алкиллаш ва ациллаш реакциялари натижасида молекуланинг таркибига алкил ва ацил гуруҳлар киритилади ва бунинг натижасида молекула таркибида электрон зичлик қайтадан тақсимланади, модданинг физик-қимёвий хоссалари сезиларли ўзгариши кузатилади.
TARKIBIDA AZOT, KISLOROD, OLTINGUGURT SAQLAGAN GETEROHALQALI BIRIKMALAR ASOSIDA DIZEL YOQILG‘ILARI XOSSALARINI YAXSHILOVCHI PRISADKALARNI OLISH VA ULARNI XOSSALARINI O‘RGANISH
This article presents the synthesis of nitrogen-, oxygen-, halogen- and sulfur-containing heterocyclic compounds, in particular esters of 2-mercaptobenzoxazole, and the results of studying their properties of diesel fuels
TRANSESTERIFICATION AND AMIDATION REACTION OF ERUCA SATIVA SEED OIL
Eruca sativa refers to the family Brassicaceae, which includes a large number of plant species and is used for various purposes such as food and medicine. In the present study, Transesterification and amidation reaction of Eruca sativa seed oil was carried out and analyzed by TLC and IR Spectroscopy.
ANISTIZINNI SALITSIL VA 4-NITROBENZALDEGIDLAR BILAN REAKSIYASI
Currently, the paint and varnish industry is developing in the world, and people's need for paints is increasing. Schiff bases are widely used in the pharmaceutical field, for example, they are formed with esters of 4-minobenzoic acids (fluoxetine, atropine, ethacrynic acid, trihexyphenidyl, procyclidine, ranitidine, biperiden). Schiff bases are also used in the food industry.
ДИЭТАНОЛАМИНИНГ БЕНЗОИЛХЛОРИД БИЛАН РЕАКЦИЯЛАРИ
Диэтаноламин ва унинг ҳосилаларининг халқ хўжалиги ва тиббиётда ишлатилишига оид маълумотлар адабиётларда кўплаб ёритилган
FENOL HOSILALARINI ADAMANTANOL-1 BILAN ALKILLASH
Abstract: Continuing the study of the adamantylation reaction of phenols, studies were carried out on the interaction of phenol derivatives with 1-adamantanol under various conditions. Accordingly, the use of adapalene, a drug belonging to the class of atypical synthetic retinoids used as an effective remedy in dermatological practice, was discovered against rashes.
2-ALKEL-5-XLOR BENZIMIDAZOL HOSILALARINING MUQOBIL SINTEZ USULLARI
The reactions were carried out with the participation of 4-chloro-2-nitroaniline and carboxylic acids. Using modern physical research methods, the structure of the newly synthesized substances 2-ethyl-5-chlorobenzimidazole and 2-propyl-5-chlorobenzimidazole was studied.
BUTIN-2-DIOL-1,4 OLINISHI VA UNING XOSSALARI
This thesis presents data on the study of the catalytic synthesis of butin-2-diol-1,4 and the production of its esters.
METANDAN MEZOG’OVAKLI UGLEROD OLISH REAKSIYASI TEZLIGIGA TURLI OMILLARNING TA’SIRI
. The rate of formation of nanocarbon layers in the presence of 15%Ni*5%Co*5%Fe*5%Cu/YuKS and 15%Ni*5%Co*5%Fe*5%Cu*2%Mo/YuKS catalysts the effect of different parameters of catalytic pyrolysis of methane (catalyst layer thickness, gas phase movement speed, process temperatures) was studied.
O-ANIZIDIN VA 2-PIRIDIN KARBON KISLOTANI TO’G’RIDAN-TO’G’RI AMIDLASH REAKSIYASI
the direct synthesis of acid amides from carbocyclic acids and amines under the influence of microwaves without a solvent was studied on the example of o-anisidine and 2-pyridine carboxylic acid. The structure of the substance synthesized as a result of the reaction was confirmed by modern physico-chemical research methods
SAMARALI FTALOTSIANIN PIGMENTLARINI SINTZ QILILISH VA TERMOGRAVAMETRIK TAHLILINI O’RGANISH
: In this article, the steps of synthesis of phthalocyanine pigment using effective methods and the necessary sharoids are presented, and thermogravimetric analysis of this pigment is studied.
ТУРЛИ СИНФ АМИНОНИТРИЛЛАРИНИНГ ЗАМОНАВИЙ СИНТЕЗ УСУЛЛАРИ
The article evaluates the scale of use of α-aminonitriles in organic synthesis. The catalysts used in their synthesis, their types, as well as information about their effect on the yield of the reaction product are given. In addition, the reactivity of cyanidation reagents has been widely evaluated.
DIZEL YOQILG‘ILARI UCHUN 2-MERKAPTOBENZOKSAZOL EFIRLARINI PRISADKA SIFATIDA QO‘LLASH
This article conducts scientific research in current areas, such as the creation of technological processes for the use of 2-mercaptobenzaxole esters as additives for diesel fuels.
AYLANMA ISITISH TIZIMLARIDA KORROZIYADAN HIMOYA QILISHDA INGIBITORLAR SINTEZ QILISH VA ULARNING TAHLILI
A corrosion inhibitor containing nitrogen and phosphorus, water-soluble products, was synthesized, the reaction yield and test results were studied. The IR spectrum of the corrosion inhibitor PF-7.3 was analyzed.
GEKSAMETILENTETRAMIN p-METOKSIFENILATSETATOXLORID SINTEZI
4-metoksifenilxloratsetatning turli aminlar bilan reaksiyalari nukleofil almashinish reaksiyasi bo’lib, bu reaksiyalar erituvchining suyuqash haroratida oddiy sharoitda borishi aniqlandi. Uchlamchi aminlarning reaksiyaga kirishish qobiyatini o’rganish uchun uratropin tanlab olindi va uning 4-metoksifenilxloratsetatning 1:1 nisbatda reaksiya olib borildi va mahsulotlar ajratib olindi.
GAZOXROMATIK USULDA ZAYTUN MOYINING TRIGLITSERID TARKIBINI O’RGANISH.
In this work, the oil extracted from the seeds of the olive plant was transformed into methyl esters, and it was identified and quantified by gas chromatography.
ИССЛЕДОВАНИЕ ВТОРИЧНЫХ МЕТАБОЛИТОВ ГРИБА TRICHODERMA VIRIDE СОВРЕМЕННЫМИ БИООРГАНИЧЕСКИМИ МЕТОДАМИ.
Abstract:Nowadays, the environment, ecology, artificial food and synthetic drugs have a negative effect on the human body. As a result, many new diseases are emerging. One of the main tasks of bioorganic chemistry is to help humanity by increasing natural drugs. we talked about isolation and study of their physiological activity.
ОПРЕДЕЛЕНИЕ КОЛИЧЕСТВА АМИНОКИСЛОТ В КОЛЛАГЕНЕ
Получены коллагена из крупного рогатого скота. Коллагена исследованы хроматографическим методами. Определение качественный анализ и количественный расчёт концентрации исследуемых свободных аминокислот проводили сравнением времени удерживание и площадей пиков стандартных и исследуемых фенилтиокарбаматных производных аминокислот. В результате проведенных исследований в коллагена было идентифицировано 20 аминокислот, 10 из которых являются незаменимыми.
GORMON PEPTIDLAR, ULARNING BIOLOGIK VAZIFALARI VA MOLEKULASINING TUZILISHI
This article provides information about peptide hormones, their chemical formulas determined by scientists, as well as their biological roles.
МОДИФИКАЦИЯ ГИДРОЛИЗНОГО ЛИГНИНА РАСТВОРАМИ ПЕРМАНГАНАТА КАЛИЯ
The work shows that as a result of permanganate oxidation, modification of the structure and properties of hydrolytic lignin occurs, which was revealed by a comparative study of the IR spectral and sorption characteristics of the original and modified lignin derivatives.
EFIR MOYLARINING TAVSIFI, ULARNING ANANAVIY OLINISH USULLARI
In the chemical industry, it is important to carry out their targeted synthesis of essential oils, in this regard, as an aromatherapy agent in medicine, as an aromatizer for food products, as a flavoring agent in the perfumery and cosmetics industry, as a flavoring agent in household chemicals. special attention is paid to the issues of developing mechanisms that are highly effective in creating drugs that are highly effective in obtaining substances. Therefore, this article proposes solutions aimed at solving the problems of identifying plants rich in essential oils, extracting essential oils from their composition using various traditional and modern methods
O’SIMLIK YOG’LARI UCHUN OQARTIRUVCHI GIL KUKUNLARINI OLISH USULLARI
Clay layers of various types are found in the deposits of our republic in many areas. The applications of clay soils are numerous, the first of which is fillers, and the next is cleaners. One example is the fact that there are no enterprises producing sorbents in the country, since experiments on processing that is, sorbent clay soils used for cleaning have been carried out little and studied.
VESHENKA QO’ZIQORININI YETISHTIRISHNING BIOKIMYOVIY INOVATSION TEXNOLOGIYALARNI ISHLAB CHIQISH.
Abstract: The article studied the artificial cultivation of oyster mushrooms in tannid-tanned blocks, and can be used in the cultivation of edible higher basidiomycetes, in particular oyster mushrooms. The method of growing mushrooms includes the preparation and heat treatment of lignocellulosic waste from agriculture and forestry, the introduction of mycelium and the formation of tannide-tanned mushroom blocks.
PHYSALIS ANGULATA O‘SIMLIGI VITAMIN TARKIBI TAXLILI
For the first time, the HPLC method was used to determine the content of water-soluble vitamins in the plant Physalis angulata of the Solanaceae family, growing in Uzbekistan.
STACHYBOTRYS CHARTARUM ZAMBURUG‘IDAN BA’ZI ALKALOIDLARINI AJRATISH VA ULARNI TUZILISHINI O‘RGANISH
Stachybotrys chartarum yashil-qora qo‘ziqorin bo‘lib, tolali plitalar, qog‘oz, shift plitalarlarda o‘sadi. Zamburug‘ yuqori namlik, suv oqishi, suv toshqini tufayli yuzaga keladigan haddan tashqari namlik bo‘lgan joylarda sodir bo‘ladi
СТЕРЕОСЕЛЕКТИВНЫЕ СИНТЕЗ КОМПОНЕНТЫ АЛЛЕЛОХИМИЧЕСКИЕ ВЕЩЕСТВ ДЫННОЙ МУХИ MYIOPARDALIS PARDALINA BIGOT.
This study describes the development of a method for the synthesis of components of allelochemical substances of the melon fly Myiopardalis Pardalina bigot. Also, a route for the synthesis of parapheromone 4(4-acetoxyphenyl)-2-butanone has been proposed.
ИССЛЕДОВАНИЕ АЛЛЕЛОХИМИЧЕСКИХ ВЕЩЕСТВ ДЫННОЙ МУХИ MYIOPARDALIS PARDALINA BIGOT
A method for the isolation and determination of allelochemical substances of the melon fly Myiopardalis pardalina Big. was studied; the GC-MS method was used for determination; it was carried out on an Agilent 8890 gas chromatograph; the amount of biomaterial was extracted with organic solvents.
CYPERUS ROTUNDUS O`SIMLIGI O’SISH SHAROITI, KIMYOVIY TARKIBI VA XALQ TABOBATIDAGI O`RNI
In this article, general information about the Cyperus rotundus plant, its growth conditions, the plant's organs, the use of its root in folk medicine, its healing properties, and its ingredients are described.
2-GIDROKSIMETILBENZIMIDАZOL MOLEKULASINI KVАNT-KIMYOVIY HISOBLАSHLАR ORQАLI ELEKTRON TUZILISHINI OʻRGАNISH
By means of quantum chemical calculations, the electronic structure and reactivity of the 2-hydroxymethylbenzimidazole molecule, competing donor centers and energy, electronic properties, values of the angle and bond length were determined.
QUALITY ANALYSIS OF ALKALOIDS OF SOME PLANTS GROWING IN THE REPUBLIC OF GUINEA
Abstract: The qualitative analysis of the alkaloid content of 51 samples of plant species belonging to 23 botanical families, collected in the Republic of Guinea was carried out. Among them, 5 families contain an abundance of alkaloids: they are Annonaceae, Lauraceae, Menispermaceae, Rhamnaceae and Rutaceae.
PAXTA YOG’LARNI TINIQLASHTIRISH UCHUN MAHALLIY XOMASHYOLARNI TAHLILIY KO’RSATGICHLARI
The use of clay powders with sorption properties worldwide is largely hampered due to difficulties in the development and delivery of these adsorbents from industrial quarries to regeneration plants. However, their widespread use is due to the lack of effective methods of their processing and the limited ability to activate the upper part, currently, instead of an expensive clay powder adsorbent, a method for obtaining a local cheap activated adsorbent has been determined. It was analyzed that it can replace expensive imported sorbents that are used due to the fact that not enough experiments have been conducted to study their composition.
PESTISIDLARNING TUPROQ BIORESURSLARIGA ZARARLI TA’SIRI
In the article, 2 types of pesticides, which are relatively common in the soils of Surkhandarya region, get into the human body and their harmful consequences, migration routes, evaporation rate and soil sorption capacity were studied. In particular, the dependence of the evaporation rate on the soil composition was studied.
BA’ZI 3d - METALLARNING 3-AMINO-1,2,4–TRIAZOL ASOSIDAGI KOMPLEKS BIRIKMALARINING TADQIQOTI
New complex compounds of Co (II), Ni (II) and Cu (II) nitrates were synthesized on the basis of 3-amino-1,2,4-triazole ligand, and the composition and structure of the synthesized complex compounds were determined using modern physicochemical methods studied. The results of IR-spectroscopic analysis of the structure of the obtained compounds showed that complexes with an octahedron structure are formed, where it was determined that the coordination took place through the second nitrogen atom in the triazole ring.
QUYOSH ELEMENTLARI UCHUN KVARS QUMIDAN KREMNIY NONOZARRALARINI ISHLAB CHIQARISH BOʻYICHA TADQIQOTLAR
Ushbu ilmiy tatqiqot ishida Surxondaryo viloyatining turli hududlaridan olib kelingan kvars qumlarining tarkibidagi SiO2 miqdori rentgen fazaviy usulda tahlil qilindi. Oʼrganilgan kvars qumlaridan Sherobod tumani”Jerdanak” kvars konidan olib kelingan kvars qumida kremniy (IV) oksidining miqdori yuqori ekanligi aniqlandi. Mazkur ishda kvars qumini boyitish va laboratoriya sharoitida kimyoviy ishlov berish orqali texnik kremniy ajratib olish uchun oʼtkazilgan tajriba natijalari keltirilgan. Tadqiqot ishida kvars qumu boyitilib, magniy bilan qaytarildi. Olingan mahsulot qaytarilgandan so’ng qayta rentgen fazaviy usulda tahlil qilindi.
KUZGI BUG‘DOY URUG‘LARIDA BENTONIT GILLARI BILAN QOBIQLASH MEYORLARINI VA SUG‘ORISH TARTIBLARINING 1000 DONA DON MASSASIGA TA’SIRI.
Maqolada Qashqadaryo viloyatining och tusli bo‘z tuproqlari sharoitda kuzgi bug‘doy navlari 1000 dona don massasiga bentonit gillarining meyorlari va sug‘orish tartiblarini ta’siri o‘rganilgan va tahlil qilingan. Tahlillarda sug‘orish oldi tuproq namligi CHDNS ning 75-80-70% sug‘orilgan variantlarda kuzgi bug‘doyning «Shukrona» va «Turon» navlari urug‘larini 40; 50 kg/t bentonit gillari bilan qobiqlab ekish meyori qo‘llanganda, 1000 dona don massasi 42 va 52 g. ni tashkil etgan holda yuqori va sifatli don hosil yetishtirish ta’minlanadi.
ARALASH LIGANDLI Cr(III), Cu(II) VA Co(II) KOMPLEKS BIRIKMALARINING BIOKORROZIYAGA QARSHI FAOLLIGI
In this study, synthesized complex compounds were tested against biocorrosion of SRB (sulfate reducing bacteria) at enterprises for the production and storage of oil and petroleum products, and an analysis of the results is given.
STUDY OF ELECTRON SCANNING MICROSCOPE INDICATORS OF A NITROGEN-CONTAINING AURIN COMPOUND
It is known, that during the production of polyvinyl chloride in industry, chlororganics are release as a by-product. These additional decoupling chlororganics were isolated and sorbent agents were created from the amines produced by the processing. The sorbents obtained during the practical experiments of the study were establish to be use to treat industrial wastewater Cu (II) and Zn (II) ions. In order to study the indicators of the location and uniform distribution of the elements contained in the sorbent obtained during practical experiments, the scanner was analyze using an electron microscope.
BENTONIT GIL KUKUNINI SORBSION XOSSASINI KIMYOVIY USULDA FAOLLASHTIRISH
Sorption properties of the powder of processed bentonite clay are investigated. The influence of temperature and time on the sorbent production process was studied. During processing, composites were obtained with the addition of additional components to increase sorption properties.
Ni (II) TUZLARINI 2-(3-GIDROKSIPROPIL) BENZIMIDAZOL BILAN HOSIL QILGAN KOMPLEKSINI TERMIK TAXLIL YORDAMIDA O’RGANISH
Koordinatsion birikmalar kimyosining jadal rivojlanayotgan sohalaridan biri bu tarkibida azot, kislorod, oltingugurt tutgan geterohalqali ligandlar bilan biometallarning kompleks birikmalarini sintezi va xossalarining tadqiqotidir.
APPLICATION AND REGULATION OF NITRATE AND NITRITE IN MANUFACTURING OF CHICKEN SAUSAGE
Sodium nitrate (NaNO3) and sodium nitrite (NaNO2) are essential chemical compounds extensively employed in the food industry, particularly in the production of chicken sausages. These additives serve multiple vital functions, including preservation, flavor enhancement, and microbial control. They safeguard against bacterial growth, particularly the perilous Clostridium botulinum, which can produce botulism toxin in inadequately processed meat products.
RESEARCH OF IR SPECTROSCOPY INDICATORS OF THE AURIN COMPOUND, WHICH CONTAINS NITROGEN
It is known, that during the production of polyvinyl chloride in industry, chlororganics are release as a by-product. These additional decoupling chlororganics were isolated and sorbent agents were created from the amines produced by the processing. The sorbents obtained during the practical experiments of the study were establish to be use to treat industrial wastewater Cu (II) and Zn (II) ions. In the course of practical experiments, the functional groups in the sorbent obtained were analyzed IR spectroscopy indicators.
ИССЛЕДОВАНИЕ ВЛИЯНИЕ КОМПОНЕНТОВ НА СВОЙСТВА КЛЕЕВЫХ КОМПОЗИЦИЙ ДЛЯ ГОФРИРОВАННЫХ КАРТОНОВ
Based on the analysis of various modern research methods, it is explained how the components of an adhesive composition based on oxidized starch affect the properties of the polymer composition and the reasons for this.
ANTIPIRENLAR BILAN ISHLOV BERILGAN TABIIY TO‘QIMACHILIK MATERIALLARNING TERMIK BARQARORLIGINI TADQIQ ETISH
A new halogen-free flame retardant was prepared and impregnated on cotton fabrics. Thermal stability and fire behavior of cotton fabrics were studied using thermogravimetric analysis. The fire resistance mechanism of coated cotton fabrics was also studied.
YONUVCHANLIGI KAMAYTIRILGAN IKKILAMCHI PE MAHSULOTLARI OLISH
All means that increase fire-resistant properties are divided into fire-resistant coatings and compositions that are absorbed into the material being processed.
POLIETILENGA ISHLATISHDA YAROQLI TО‘LDIRUVCHILARNING FIZIK-MEXANIK XUSUSIYATLARI
This article provides information on the physical and mechanical properties of fillers used in polyethylene.
STUDY OF THE SYNTHESIS OF POLYCARBOXYLATE PLASTICIZERS USED TO OBTAIN CONCRETE PRODUCTS AND FACTORS AFFECTING THE SYNTHESIS PROCESSES
The modern construction industry makes higher demands on building materials every еar. In pursuit of new progressive technologies available to society, the concrete we are used to is also changing. Today, the delivery of ready-mixed concrete to a customer can take more than four hours, while the concrete does not lose its physical and mechanical characteristics. House-building factories are able to produce a sufficient amount of reinforced concrete products for the construction of a seventeen-story building in three months.
POLIMER OLTINGUGURTNING FIZIK-KIMYOVIY TAHLILLARINI O‘RGANISH
Kauchukning po'lat simga yopishishini oshirish va eskirishdan keyin yopishqoqlikni saqlash uchun turli xil modifikatorlar qo'llaniladi.
FTALOSIANIN PIGMENTLARINING MOLEKULYAR TUZILISHI
Currently, the demand for pigments is increasing, but the price of pigments, especially organic ones, is very high. Therefore, in recent еars, a shortage of raw materials has led to a reduction in production volumes at a number of enterprises, so the creation of chemical properties and methods for the synthesis of new types of phthalocyanine pigments is considered an important scientific and technical task.
KIMYODAN NAZARIY BILIMLAR VA AMALIY KOʻNIKMALARNI SHAKLLANTIRISHDA TURLI MANTIQIY YONDASHUVLARDAN FOYDALANISH
This article analyzes the possibilities of forming theoretical knowledge and practical skills in chemical education. It pays special attention to inductive and deductive approaches in chemical education. The increase in the effectiveness of training as a result of the use of various logical approaches to the organization of laboratory experiments, demonstration experiments and practical exercises is justified.
НАНОТУЗИЛИШЛИ ТОК ЎТКАЗУВЧАН ПОЛИМЕР КОМПОЗИЦИЯЛАР
THE USE OF MNEMONIC METHODS IN CHEMICAL EDUCATION
This article analytically describes the possibilities of forming the cognitive abilities of students. It focused on the use of mnemonics methods in chemical education. The use of mnemonics techniques in the assimilation of information is justified, develops the cognitive abilities of students.
UMUMIY O‘RTA TA’LIM MAKTAB O‘QUVCHILARI KIMYO FANINI O‘ZLASHTIRISHIDAGI MUAMMOLARNI BARTARAF ETILISHI
the general education school presents ideas about problems and solutions in the development of chemistry by students, pedagogical technologies in teaching subjects related to chemistry.
FTALOSIANIN PIGMENTLARINING KRISTALL TUZILISHI
Ftalosianin pigmentlarining kristall tuzilishini chuqur tahlil qilish ularning qо‘llanilish sohalarini kengaytiradi hamda ftalosianin pigmentlarini kristall shakllarining turlari haqida ma’lumot beradi. Shuniningdek tibbiyotda, xalq xujaligida va sanoatning barcha sohalarida ishlatilishiga qarab turli kristall shakllar tanlanadi.