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- 5-diode-4-hydroxybenzoic acid (2)
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- 6-dimethyloctin-4-diol-3 (2)
- 6-diode-4- carboxyphenylcarbamate (2)
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- Absorption bands (2)
Articles 61 - 88 of 88
Full-Text Articles in Engineering
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
CHEMISTRY AND CHEMICAL ENGINEERING
The methods of oriented immobilization of lipases on a solid carrier - Silochrome C-80 have been developed. The resulting sorbents were tested in the process of obtaining biodiesel from cotton oil. It was shown that immobilized lipase on Silochrome C-80 with NH2 group has the highest transetrification ability and stability, while in sorbents with the enzyme immobilized with -COOH and -SH groups this value was 87 and 53%, respectively. Biocatalysis using an affinity sorbent of immobilized lipase with the –NH2 group has a high operational stability, which, after 240 hours of operation, retains more than 50%, and after 480 hours, …
Study Of Amino-Acid Composition Of Seed Of Oats Fruit (Avena Sativa L.), Nurullaeva Dilobar, Farmanova Nodira
Study Of Amino-Acid Composition Of Seed Of Oats Fruit (Avena Sativa L.), Nurullaeva Dilobar, Farmanova Nodira
CHEMISTRY AND CHEMICAL ENGINEERING
For the first time, the amino acid composition of the seed oat fruit harvested in the Republic of Uzbekistan was stud-ied. Chromatographic detection of amino acids was performed by the method of ascending one-dimensional paper chroma-tography; violet, red-violet and yellow staining was observed, indicating the presence of free amino acids in the raw materi-al under study. The determination of the qualitative and quantitative content of amino acids of oat fruit was carried out by high performance liquid chromatography (HPLC) on an Agilent Technologies 1200 chromatograph, column 75x4.6 mm Discovery HS C18. Qualitative analysis and quantitative calculation of the concentration of …
Research Of Physical And Chemical Indicators And Food Value Of Semi-Finished Products Of Sauce-Past Of Fruits And Vegetables, Atakhanov Shukhrat, Dadamirzaev Muzaffar, Akramboev Rasuljon, Otakhanov Shokirjon
Research Of Physical And Chemical Indicators And Food Value Of Semi-Finished Products Of Sauce-Past Of Fruits And Vegetables, Atakhanov Shukhrat, Dadamirzaev Muzaffar, Akramboev Rasuljon, Otakhanov Shokirjon
CHEMISTRY AND CHEMICAL ENGINEERING
Development of technology for the storage and processing of fruits and vegetables and an increase in the degree of consumption of pro-cessed products among the population is an urgent problem of the present time.Developed recipes for semi-finished sauce-pastes, consisting of fruits, vegetables and their mixtures, the technology of their production. These recipes rationally used sesame of Yerusalem artichoke - secondary raw materials of the canning industry, the powder of the peel of Walnuts, sunflower seeds. Used existing methods for the determination of physical-chemical parameters and nutritional value of semi-finished sauce-paste. A recipe and production technology for a semi-finished product, persim-mon …
Extraction Of The Cotton Cake By The Influence Of Pulse Electric Field, Kayimov Fazliddin, Mazhidov Qahramon
Extraction Of The Cotton Cake By The Influence Of Pulse Electric Field, Kayimov Fazliddin, Mazhidov Qahramon
CHEMISTRY AND CHEMICAL ENGINEERING
The technology of extraction of cotton cake by the influence of a pulsed electric field on the extracted mass is researched. The dependence of the specific conductivity on the inverse temperature using the influence of a pulsed electric field has been estab-lished. The technological process of extraction of vegetable oil is accelerated and an increase in oil yield is ensured.
Development Of A Technology For Producing A Gel Composition For The Treat-Ment Of An Allergy Complicated By Fungal Infection, Filatova Albina Vasilevna, Turaev Abbaskhan Sabirkhanovich, Djurabaev Djalol Turgunbaevich
Development Of A Technology For Producing A Gel Composition For The Treat-Ment Of An Allergy Complicated By Fungal Infection, Filatova Albina Vasilevna, Turaev Abbaskhan Sabirkhanovich, Djurabaev Djalol Turgunbaevich
CHEMISTRY AND CHEMICAL ENGINEERING
The results of the development of the technology of the combined external drug for the treatment of allergies compli-cated by fungal infection are given. The rheological properties of the gel composition were studied in comparison with the similar preparation Fenistil gel, it was shown that the dynamic viscosity of the drug is 4.1 Pa·s, the active components (diphenylhydramine, fluconazole, Timoptin) do not destroy the structure of the gel base. A technological and instrumental scheme for the production of the drug has been developed.
Properties Of Model Rubber Compounds With Modified Angren Kaolin, Vapaev Murodjon Dusummatovih, Teshabaeva Elmira Ubaydullaevna, Ibadullaev Ahmadjon
Properties Of Model Rubber Compounds With Modified Angren Kaolin, Vapaev Murodjon Dusummatovih, Teshabaeva Elmira Ubaydullaevna, Ibadullaev Ahmadjon
CHEMISTRY AND CHEMICAL ENGINEERING
As a result of studies, the effect of modified Angren kaolin on the properties of elastomeric compositions based on synthetic polyisoprene and oil-filled styrene-butadiene rubbers were revealed. Plastoelastic and relaxation properties, as well as resistance to scorching and vulcanization kinetics of rubber compounds with traditional and modified Angren kaolin, were determined. The relationship of the elastic-strength properties of vulcanizates with the type and quantitative content of the modified Angren kaolin used is established.
Research On The Process Of Obtaining Industrial Important From Wheat Straw, Kedelbayev Bakhytzhan, Rakhmanberdiev Gaffar, Lahanova Kulzada, Kalymbetov Gani
Research On The Process Of Obtaining Industrial Important From Wheat Straw, Kedelbayev Bakhytzhan, Rakhmanberdiev Gaffar, Lahanova Kulzada, Kalymbetov Gani
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of this work was to develop a process of chemical hydrolytic hydrogenation of cellulose wheat straw, with the aim of increasing the yield of valuable products necessary for the biotechnology, pharmaceutical and chemical indus-tries. To obtain cellulose wheat straw carried out the process of auto hydrolysis. Studies have been conducted to study the process of chemical hydrolytic hydrolysis and hydrogenation of cellulose from rice processing waste, and optimal process parameters have been developed. As a result, we have implemented a combined (hybrid) hydrolysis-hydrogenation process for producing sorbitol. Developed catalysts for this process, investigated their activity. The influence of …
Synthesis And Study Of The Products Of The Interaction Of Diethanolamine And Aldehyde., Magrupov Farkhad Asadullayevich, Alimukhamedov Muzaffar Ganiyevich, Adilov Irkinovich, Khudoyberdiev Akhmadali
Synthesis And Study Of The Products Of The Interaction Of Diethanolamine And Aldehyde., Magrupov Farkhad Asadullayevich, Alimukhamedov Muzaffar Ganiyevich, Adilov Irkinovich, Khudoyberdiev Akhmadali
CHEMISTRY AND CHEMICAL ENGINEERING
The influence of the nature of aldehydes of the structure of the products of their interaction with diethanolamine was studied. It was found that the interaction of one mole of diethanolamine with one mole of aldehyde produces 2-substituted 1,3- oxosolidines. Moreover, hydroxylase-containing compounds are formed at molar ratios of diethanolamine: aldehyde = 2: 1 mol / mol. By carrying out the reaction of the interaction of diethanolamine with an aldehyde at their molar ratios of 2: 1 mol / mol, hydroxylase-containing compounds containing two tertiary nitrogen and four hydroxyl groups in their structure were synthesized. The exothermic effect of the …
Cleaning Gas Emissions From Carbon Dioxide, Bakhronov Khashim Shayimovich, Аkhmаtоv Аbdumalik Аbduvakhobovich, Ganieva Sabokhat Uktamovna, Suyarova Hilola Hakimovna
Cleaning Gas Emissions From Carbon Dioxide, Bakhronov Khashim Shayimovich, Аkhmаtоv Аbdumalik Аbduvakhobovich, Ganieva Sabokhat Uktamovna, Suyarova Hilola Hakimovna
CHEMISTRY AND CHEMICAL ENGINEERING
The description of a pilot plant and results of a research of intensity of a heat mass transfer are provided and hy-draulic resistance at various initial concentration of the absorbed gas and relations of an expense of the liquid absorber to a consumption of gas mixture. It is established that use of water as the absorber of carbon dioxide doesn't provide necessary effectiveness of process. At absorption of carbon dioxide from an air with an aqueous solution of monoethanol amine in the hollow vortex device, with increase in concentration of CO2 (carbon dioxide) in steam-and-gas mixture on an entrance to …
Obtaining Of Magnesium Hydroxide From Dolomite From The Dehkanabad Deposit, Mixliyev Oybek, Bobokulova Oygul, Tadjiev Ilkham, Mirzakulov Kholtura Chorievich
Obtaining Of Magnesium Hydroxide From Dolomite From The Dehkanabad Deposit, Mixliyev Oybek, Bobokulova Oygul, Tadjiev Ilkham, Mirzakulov Kholtura Chorievich
CHEMISTRY AND CHEMICAL ENGINEERING
It was shown that the effect of pH on magniy hydroxide sediment degree in chemical pure solution content of dolo-mite which is affected by nitrogen acid. It was determined that sedimented based amound of magniy when the purified solu-tion of dolomite was neutral ized with gas ammonia at 11-12 pH. The filtration speed of magniy hydroxide is recorded 181 kg/m2h based on dry sediment. All solutions have reothologic properties.
Study Of Pt (Ii) Ion Sorption On Polymeric Sorbents Impregnated By Organic Ligands, Pardaev Otabek. Tuhtamishоvich, Daminova Shakhlo Sharipovna, Sharipov Khasan Turabovich
Study Of Pt (Ii) Ion Sorption On Polymeric Sorbents Impregnated By Organic Ligands, Pardaev Otabek. Tuhtamishоvich, Daminova Shakhlo Sharipovna, Sharipov Khasan Turabovich
CHEMISTRY AND CHEMICAL ENGINEERING
The sorption and complex-forming properties of PAD600-based impregnated sorbents with respect to the Pt (II) ion were studied. The parameters of sorption extraction of platinum ions are determined. It was found that impregnated sorbents have the best sorption properties with respect to platinum cations. Based on the processing of the integral kinetic sorption curves, it has been established that the sorption process proceeds according to second-order models. The use of chemical kinetics models has shown that the stage of chemical interaction of platinum (II) ions with functional groups of the sorbent also contributes to the overall process rate.
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
The article discusses use of the insect cell cultures for biotechnological purposes. Optimal conditions for the cultiva-tion of Spodoptera exigua and Lymantria dispar cell lines were selected.
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
CHEMISTRY AND CHEMICAL ENGINEERING
The methods of oriented immobilization of lipases on a solid carrier - Silochrome C-80 have been developed. The resulting sorbents were tested in the process of obtaining biodiesel from cotton oil. It was shown that immobilized lipase on Silochrome C-80 with NH2 group has the highest transetrification ability and stability, while in sorbents with the enzyme immobilized with -COOH and -SH groups this value was 87 and 53%, respectively. Biocatalysis using an affinity sorbent of immobilized lipase with the –NH2 group has a high operational stability, which, after 240 hours of operation, retains more than 50%, and after 480 hours, …
Study Of Amino-Acid Composition Of Seed Of Oats Fruit (Avena Sativa L.), Nurullaeva Dilobar, Farmanova Nodira
Study Of Amino-Acid Composition Of Seed Of Oats Fruit (Avena Sativa L.), Nurullaeva Dilobar, Farmanova Nodira
CHEMISTRY AND CHEMICAL ENGINEERING
For the first time, the amino acid composition of the seed oat fruit harvested in the Republic of Uzbekistan was stud-ied. Chromatographic detection of amino acids was performed by the method of ascending one-dimensional paper chroma-tography; violet, red-violet and yellow staining was observed, indicating the presence of free amino acids in the raw materi-al under study. The determination of the qualitative and quantitative content of amino acids of oat fruit was carried out by high performance liquid chromatography (HPLC) on an Agilent Technologies 1200 chromatograph, column 75x4.6 mm Discovery HS C18. Qualitative analysis and quantitative calculation of the concentration of …
Research Of Physical And Chemical Indicators And Food Value Of Semi-Finished Products Of Sauce-Past Of Fruits And Vegetables, Atakhanov Shukhrat, Dadamirzaev Muzaffar, Akramboev Rasuljon, Otakhanov Shokirjon
Research Of Physical And Chemical Indicators And Food Value Of Semi-Finished Products Of Sauce-Past Of Fruits And Vegetables, Atakhanov Shukhrat, Dadamirzaev Muzaffar, Akramboev Rasuljon, Otakhanov Shokirjon
CHEMISTRY AND CHEMICAL ENGINEERING
Development of technology for the storage and processing of fruits and vegetables and an increase in the degree of consumption of pro-cessed products among the population is an urgent problem of the present time.Developed recipes for semi-finished sauce-pastes, consisting of fruits, vegetables and their mixtures, the technology of their production. These recipes rationally used sesame of Yerusalem artichoke - secondary raw materials of the canning industry, the powder of the peel of Walnuts, sunflower seeds. Used existing methods for the determination of physical-chemical parameters and nutritional value of semi-finished sauce-paste. A recipe and production technology for a semi-finished product, persim-mon …
Extraction Of The Cotton Cake By The Influence Of Pulse Electric Field, Kayimov Fazliddin, Mazhidov Qahramon
Extraction Of The Cotton Cake By The Influence Of Pulse Electric Field, Kayimov Fazliddin, Mazhidov Qahramon
CHEMISTRY AND CHEMICAL ENGINEERING
The technology of extraction of cotton cake by the influence of a pulsed electric field on the extracted mass is researched. The dependence of the specific conductivity on the inverse temperature using the influence of a pulsed electric field has been estab-lished. The technological process of extraction of vegetable oil is accelerated and an increase in oil yield is ensured.
Development Of A Technology For Producing A Gel Composition For The Treat-Ment Of An Allergy Complicated By Fungal Infection, Filatova Albina Vasilevna, Turaev Abbaskhan Sabirkhanovich, Djurabaev Djalol Turgunbaevich
Development Of A Technology For Producing A Gel Composition For The Treat-Ment Of An Allergy Complicated By Fungal Infection, Filatova Albina Vasilevna, Turaev Abbaskhan Sabirkhanovich, Djurabaev Djalol Turgunbaevich
CHEMISTRY AND CHEMICAL ENGINEERING
The results of the development of the technology of the combined external drug for the treatment of allergies compli-cated by fungal infection are given. The rheological properties of the gel composition were studied in comparison with the similar preparation Fenistil gel, it was shown that the dynamic viscosity of the drug is 4.1 Pa·s, the active components (diphenylhydramine, fluconazole, Timoptin) do not destroy the structure of the gel base. A technological and instrumental scheme for the production of the drug has been developed.
Properties Of Model Rubber Compounds With Modified Angren Kaolin, Vapaev Murodjon Dusummatovih, Teshabaeva Elmira Ubaydullaevna, Ibadullaev Ahmadjon
Properties Of Model Rubber Compounds With Modified Angren Kaolin, Vapaev Murodjon Dusummatovih, Teshabaeva Elmira Ubaydullaevna, Ibadullaev Ahmadjon
CHEMISTRY AND CHEMICAL ENGINEERING
As a result of studies, the effect of modified Angren kaolin on the properties of elastomeric compositions based on synthetic polyisoprene and oil-filled styrene-butadiene rubbers were revealed. Plastoelastic and relaxation properties, as well as resistance to scorching and vulcanization kinetics of rubber compounds with traditional and modified Angren kaolin, were determined. The relationship of the elastic-strength properties of vulcanizates with the type and quantitative content of the modified Angren kaolin used is established.
Obtaining Of The “Green Flourecent Protein - Gfp” In Yeast Of Pichia Pastoris As Repoter Of Heterological Protein Expression, Ashirоv Оybek, Sasmakоv Sobirdjan, Abdurakhmanоv Jaloliddin, Hasanоv Shuhrat
Obtaining Of The “Green Flourecent Protein - Gfp” In Yeast Of Pichia Pastoris As Repoter Of Heterological Protein Expression, Ashirоv Оybek, Sasmakоv Sobirdjan, Abdurakhmanоv Jaloliddin, Hasanоv Shuhrat
CHEMISTRY AND CHEMICAL ENGINEERING
Based on pPIC3.5 and pPIC9 yeast vectors the recombinant plasmid DNA pPIC3.5-GFP (8464 bp) and pPIC9-GFP (8718 bp) containing cDNA (719 bp) of Green fluorescent protein (GFP) were cloned. The obtained plasmids were transformed into yeast cells of the GS115 Pichia pastoris strain. Transformants are selected on histidine-deficient medium. Recombinant clones of pPIC3.5-GFP and pPIC9-GFP were identified by detecting cell fluorescence. GFP expression in yeast is confirmed by green fluorescence. Using electrophoresis in PAAG the molecular weight of the synthesized protein (≈27 kDa) is determined. The resulting reporter constructs and recombinant strains can be used to study the expression level …
Determination Of Amino Acids Buffer Of Soluble Proteins Of The Aral Sea Artemia Cyst, Khajibayev Quvvat, Berdimbetova Gulsara, Qarlibayeva Bakhtigul, Oshchepkova Yuliya
Determination Of Amino Acids Buffer Of Soluble Proteins Of The Aral Sea Artemia Cyst, Khajibayev Quvvat, Berdimbetova Gulsara, Qarlibayeva Bakhtigul, Oshchepkova Yuliya
CHEMISTRY AND CHEMICAL ENGINEERING
For the first time, the amino acid composition of the buffer of soluble proteins of the Artemia cyst of the Aral Sea was determined. The determination of the qualitative and quantitative amino acid content of the buffer of soluble proteins of Artemia cysts was carried out by high performance liquid chromatography. Qualitative analysis and quantitative calculation of the concentration of the studied free amino acids were carried out by comparing the retention time and peak areas of standard amino acids, and the studied phenylthiocarbamide derivatives of amino acids. As a result of studies in the buffer of soluble proteins of …
Synthesis Of Pyridine Bases And Application As Corrosion Inhibitors, Sarsenbaev Nurlan Tenelbayevich, Kadirov Xasan Irgashevich
Synthesis Of Pyridine Bases And Application As Corrosion Inhibitors, Sarsenbaev Nurlan Tenelbayevich, Kadirov Xasan Irgashevich
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of this work was to obtain corrosion inhibitors. It has been established that heterocyclic compounds, including pyridine and its derivatives, are more frequently used as the active component in the combination of modern inhibitors of carrosion The catalytic reaction of obtaining pyridine and its derivatives by passing a mixture of acetaldehyde and formalin with ammonia was studied. By modifying the mixture of the obtained pyridine bases with urotropine, acrylic emulsion, thiourea, copper salts, etc., compositions are obtained that can serve as inhibitors of hydrochloric acid treatment.
Influence Of Conditions For Alcoholysis Of Secondary Polyethylene Terephthalate On The Output Of Bis (Hydroxyethyl) Terephthalate, Abduvokhidov Iqboljon, Jurayev Asror, Alimukhamedov Muzafar, Magrupov Farkhad
Influence Of Conditions For Alcoholysis Of Secondary Polyethylene Terephthalate On The Output Of Bis (Hydroxyethyl) Terephthalate, Abduvokhidov Iqboljon, Jurayev Asror, Alimukhamedov Muzafar, Magrupov Farkhad
CHEMISTRY AND CHEMICAL ENGINEERING
The paper presents the results of a study of the process of alcoholysis of secondary polyethylene terephthalate ethylene glycol (EG). The main attention is paid to determining the optimal conditions for the formation of bis-hydroxy ethylene terephthalate, since this product is an intermediate in the production of polyethylene terephthalate. At the same time, the effects of the duration of alcoholysis, the type and amount of catalyst on the yield of bis-hydroxy ethylene terephthalate (ratio of PET: EG = 1 mol elementary link 4 mol) were studied. Changing the duration of alcoholysis from 8 to 10 hours, the type and amount …
Alkinylation Reactions Of Benzaldehyde By Ethynylbenzene In The Presence Of Some Catalysts, Abdurakhmanova Saida, Ziyadullaev Odiljon, Ikramov Abduvakhab, Dobrynkin Nikolay
Alkinylation Reactions Of Benzaldehyde By Ethynylbenzene In The Presence Of Some Catalysts, Abdurakhmanova Saida, Ziyadullaev Odiljon, Ikramov Abduvakhab, Dobrynkin Nikolay
CHEMISTRY AND CHEMICAL ENGINEERING
The synthesis of acetylene alcohol 1,3-diphenyl propin-2-ol-1, which has several reaction centers in the molecule, is studied. This product was obtained for the first time from a representative of aromatic hydrocarbons of benzaldehyde with phenylacetylene based on an alkynylation reaction in the presence of stereoselective catalysts - ZnEt2/Ti(OiPr)4/PhMe and Sn(OTf)2/NEt3/MeCN. The influence of the activity, stability, and selectivity of the selected catalysts on the yield of products, as well as, the rate of the main reactions, along with side reactions was analyzed. The optimal conditions for the alkynylation reaction and the selectivity of the process are determined. The main and …
Influence Of Nanostructural Catalyst In The Synthesis Of Allyl Phenyl Ether And Of Its Isomerization Products, Musaev Khusniddin, Azimova Gulmira, Tajimukhammedov Khabibulla, Yuldasheva Мukhabbat
Influence Of Nanostructural Catalyst In The Synthesis Of Allyl Phenyl Ether And Of Its Isomerization Products, Musaev Khusniddin, Azimova Gulmira, Tajimukhammedov Khabibulla, Yuldasheva Мukhabbat
CHEMISTRY AND CHEMICAL ENGINEERING
Attention to 2-allylphenol (2-AF) and its synthesis is due by the fact that this compound is the starting material for the production of a number of biologically active natural compounds, such as synthetic fungicide. A number of recent publications have shown the high activity of zeolite, rhodium, iridium, and ruthenium catalysts in allylation reactions. The lack of these catalysts is their high cost. Therefore, the use of new effective and inexpensive catalysts in the reactions of synthesis and isomerization of allyl phenyl ether is important problem. The aim of this work is the selective synthesis of o-allylphenols in the isomerization …
Interfacial Contact Surface And The Size Of The Bubble In A Bubbling Extractor When Mixing Liquid Phases With An Inert Gas, Karimov Ikromali Tojimatovich
Interfacial Contact Surface And The Size Of The Bubble In A Bubbling Extractor When Mixing Liquid Phases With An Inert Gas, Karimov Ikromali Tojimatovich
CHEMISTRY AND CHEMICAL ENGINEERING
The mixing of the liquid phases is carried out in the inner and outer zones of the apparatus. The main indicator of the mixing process is estimated by increasing the efficiency of the mass transfer process. This, depends on the size of the holes through which the inert gas passes into the mixing zones and the size of the bubbles emerging from the holes. Mixing the liquid phases is carried out depending on the size of the bubble arising in the interfacial contact surfaces of the bubbles. The article describes a method for determining the interfacial contact surfaces of a …
Technical Decisions To Improvement The Technology Of Manufacture Of Flotation Potassium Chloride, Mirzakulov Kholtura, Kalanov Gayrat, Dormeshkin Oleg, Usmanov Ilkham
Technical Decisions To Improvement The Technology Of Manufacture Of Flotation Potassium Chloride, Mirzakulov Kholtura, Kalanov Gayrat, Dormeshkin Oleg, Usmanov Ilkham
CHEMISTRY AND CHEMICAL ENGINEERING
Results of researches and calculations summarized for improving the technology of flotation potassium chloride from sylvinites of the Tyubegatan deposit. The possibility of decrease production costs associated with the preparation of saturated solutions for the leaching of sodium chloride, increasing the efficiency of the process of decontamination, filtering the concentrate of potassium chloride and halite waste are shown. Use of cyclonic dust to obtain a saturated solution of potassium chloride allows to decrease the costs of production potassium chloride from 11136 kg to 555 kg per a day and improve the marketability of the products. Installation after two hydrocyclones for …
Crystal Structure Of The Cadmium Complexes With 2-Amino-1-Methylbenzimidazole, Rahmonova Dilnosa, Kadirova Zuhra, Hojamamberdiev Mirabboss, Daminova Shakhlo
Crystal Structure Of The Cadmium Complexes With 2-Amino-1-Methylbenzimidazole, Rahmonova Dilnosa, Kadirova Zuhra, Hojamamberdiev Mirabboss, Daminova Shakhlo
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of this work is the synthesis, study of the crystal and molecular structure of coordination compounds of cadmium with 2-amino-1-methylbenzimidazole. For the first time, the crystal structures of mixed ligand complexes of 2-amino-1-methylbenzimidazole (L) with various acidoligands (acetate and nitrate) with the distorted-octahedral structure of the metal polyhedron - [CdL2 (Ac)2] H2O and [CdL2 (NO3)2 (Н2О)2] were determined. The ligand molecule is coordinated through the nitrogen atom of the heterocyclic ring, the acidoligand is monodentate coordinated in the crystal structure of the complex. The presence of hydrated or innersphere water molecules in the molecules leads to the formation …
Phase Changes In Crystallization Of Some Glasses Synthesized In The Ro-Caf2-P2o5-Al2o3-Sio2 System, Aripova Mastura Khikmatovna, Rau Julietta V., Mkrtchyan Ripsime Vachaganovna
Phase Changes In Crystallization Of Some Glasses Synthesized In The Ro-Caf2-P2o5-Al2o3-Sio2 System, Aripova Mastura Khikmatovna, Rau Julietta V., Mkrtchyan Ripsime Vachaganovna
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of the relearn was to study the phase changes during crystallization of some compositions of biocompatible glasses obtained in the RO-CaF2-P2O5-Al2O3-SiO2 (R=Zn, Mg) system. For this purpose, crystallization of glasses in the range of 700-1000 °C was carried out and X-ray analysis was carried out. A change in the phase composition of crystallized glass with a change in crystallization temperature and composition has been established. During crystallization, the phases of whitlockite, zinc-substituted fluorapatite, fluorapatite, anorthite, and gahnite were identified.