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- Boundary-value problem (7)
- Method (5)
- Ordinary differential equation (5)
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- Motor oil (4)
- Singular coefficient (4)
- 1'-(p-hydroxyphenyl) ferrocenic acid (3)
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- Analysis of problem (3)
- Case (3)
- Case phases (3)
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- Conditions (3)
- Conjunction (3)
- Dynamics of germination (3)
- Eigenfunctions. (3)
- Eigenvalues (3)
- Encapsulation (3)
- Engine (3)
- Ferrocene and its derivatives (3)
- Flyer substance (3)
- Fractional order operator Reeman-Zuivill. (3)
- IR spectroscopy (3)
- IR spectroscopy. (3)
- Integral equations (3)
- Interactive methods (3)
- Metalcomplexes (3)
- Microelements (3)
- Mixed fractional order derivative (3)
Articles 1 - 30 of 120
Full-Text Articles in Physical Sciences and Mathematics
Estimation Of The Function Of Consentration For An Ordered Statistics, A. E. Madrahimov Candidate Of Physical And Mathematical Sciences, Associate Professor.
Estimation Of The Function Of Consentration For An Ordered Statistics, A. E. Madrahimov Candidate Of Physical And Mathematical Sciences, Associate Professor.
Scientific journal of the Fergana State University
This article examines the issue of estimating the concentration function for ordinal statistics and sample size.
Medicaments In Preventing Iodine Deficiency, And Their Chemical Composition, I. R. Asqarov Doctor Of Chemical Sciences, Professor, A. S. Xojiqulov Teacher
Medicaments In Preventing Iodine Deficiency, And Their Chemical Composition, I. R. Asqarov Doctor Of Chemical Sciences, Professor, A. S. Xojiqulov Teacher
Scientific journal of the Fergana State University
The article discusses the causes of iodine deficiency, the state of the spread of iodine deficiency in the world and in the Republic of Uzbekistan, synthetic and natural remedies used for its treatment are described from the information given in writing supplements, used as the “Alcoman” medicinal product, as well as methods for making tincture from it and its use.
Differential Games Of The Second Order, B. T. Samatov Doctor Of Physics-Mathematics, Professor, U. B. Soyibboev Master Student, U. A. Mirzamahmudov Master Student
Differential Games Of The Second Order, B. T. Samatov Doctor Of Physics-Mathematics, Professor, U. B. Soyibboev Master Student, U. A. Mirzamahmudov Master Student
Scientific journal of the Fergana State University
In this paper, we study the pursuit-evasion problem for the second order differential game when the initial positions of moving objects are linearly dependent and controls of the players have geometric constraints. The new sufficient solvability conditions are obtained for problems of the pursuit and evasion.
Synthesis Of The Betulinic Acid, Sh. Sh. Turg‘Unboyev Base Doctoral Student, A. X. Xaitbayev Doctor Of Chemical Sciences, Associate Professor
Synthesis Of The Betulinic Acid, Sh. Sh. Turg‘Unboyev Base Doctoral Student, A. X. Xaitbayev Doctor Of Chemical Sciences, Associate Professor
Scientific journal of the Fergana State University
Today, one of the most important tasks for the further development of the pharmaceutical industry is medicines obtained from local raw materials. This article describes the production of betulin from the bark of the Betula pendula tree growing in the territory of Uzbekistan, the synthesis of various derivatives based on it, and the study of the structure of substances by physical methods. Based on these studies, medicines will be created from local raw materials.
Beer Classification And Certification Based On Chemical Composition, D. T. Xasanova Doctor Of Philosophy In Chemical Sciences (Phd), I. R. Asqarov Doctor Of Chemical Sciences, Professor
Beer Classification And Certification Based On Chemical Composition, D. T. Xasanova Doctor Of Philosophy In Chemical Sciences (Phd), I. R. Asqarov Doctor Of Chemical Sciences, Professor
Scientific journal of the Fergana State University
The article analyzes the physical-chemical indicators that determine the commodity status characteristic of beer products, gives criteria for differentiating existing product codes and assigning product codes to the new types of products, as well as the features of applying new express analysis methods.
Great Life Cycle Of Agropyron Cristatum (L.) Beauv. In The Conditions Of Domestification, V. Mahmudov Assistant Professor
Great Life Cycle Of Agropyron Cristatum (L.) Beauv. In The Conditions Of Domestification, V. Mahmudov Assistant Professor
Scientific journal of the Fergana State University
The article studies the biomorphological features of Agropyron cristatum in the conditions of introduction in the zone of the montainous semi-desert and the definition of their economic prospects for ufilizing in bogharic lands.
About The Life Cycle Of Black Vulture (Milvus Migrans) In Fergana Valley, M. Xoliqov Candidate Of Biological Sciences, Y. Axmedova Master Student
About The Life Cycle Of Black Vulture (Milvus Migrans) In Fergana Valley, M. Xoliqov Candidate Of Biological Sciences, Y. Axmedova Master Student
Scientific journal of the Fergana State University
The article described the life cycle of Milvus migrans in the Fergana valley. On the basis of literary data and personal observation some information such as knowing their couples, their occurrence, building nests are given.
Morphogenetic And Biogeochemical Features Of The Medicinal Capparis Spinosa, M. Isag‘Aliyev, Candidate Of Biological Sciences Associate Professor, M. Obidov Base Doctoral Student., R. Matholiqov Master Student
Morphogenetic And Biogeochemical Features Of The Medicinal Capparis Spinosa, M. Isag‘Aliyev, Candidate Of Biological Sciences Associate Professor, M. Obidov Base Doctoral Student., R. Matholiqov Master Student
Scientific journal of the Fergana State University
The article studies the morphogenetic features, the composition of macro- and microelements, the coefficient of biological absorption in medicinal Capparis spinosa in light serozems, and also proved the high demand of macro elements of phosphorus, and microelements of zinc.
Morphogenetic Characteristics Of Irrigated Typical Serozem Soils, N. J. Xalilova Independent Researcher
Morphogenetic Characteristics Of Irrigated Typical Serozem Soils, N. J. Xalilova Independent Researcher
Scientific journal of the Fergana State University
In the article formation of morphogenetic characteristics of irrigated typical serozem soils widespread in sub mountain flats of the republic, their change under the influence of irrigation and their role in soil fertility assessment are discussed.
Geoenergetic Features Of Lanthanoids And Radioactive Elements In Irrigated Soils, A. Turdaliyev Doctor Of Biological Sciences, K. Asqarov Teacher, N. Xodjibolayeva Teacher
Geoenergetic Features Of Lanthanoids And Radioactive Elements In Irrigated Soils, A. Turdaliyev Doctor Of Biological Sciences, K. Asqarov Teacher, N. Xodjibolayeva Teacher
Scientific journal of the Fergana State University
The paper studies the geoenergetic features of the lanthanides and radioactive elements in the genetic horizons of irrigated meadow saz soils of Central Fergana. moreover, the number of these elements was determined depending on their geoenergetic features in the soil profile, and the geochemical Clark spectra of these elements were developed.
Solving Differential Matrix Equations For Surface With Respect To Action Of Group Of Lorence, U. Bekbayeva, K. Muminov
Solving Differential Matrix Equations For Surface With Respect To Action Of Group Of Lorence, U. Bekbayeva, K. Muminov
Scientific journal of the Fergana State University
In The artlcle a description is given for the system of differential matrix equations, the solutions of which regenerate the class of surfaces in 4 – dimensional space, which are equivalent with respect to the action of group - O(3,1).
Sorption Of Copper (Ii), Nickel (Ii) And Cobalt (Ii) Ions Into The Ionite Modified By Polyphinylchloride And Polyethylene Polyamine, Kh Ismoilova, D Bekchanov, Sh Khasanov, M Baltaeva
Sorption Of Copper (Ii), Nickel (Ii) And Cobalt (Ii) Ions Into The Ionite Modified By Polyphinylchloride And Polyethylene Polyamine, Kh Ismoilova, D Bekchanov, Sh Khasanov, M Baltaeva
Scientific journal of the Fergana State University
IPolyphinylchloride was modified by polyethylene polyamine, and the ionites were studied in static conditions by the artificial solution of copper (II), nickel (II) and cobalt (II) ions. In static conditions, factors affecting the sorption process, such as time, temperature and concentration dependence were investigated. The results of the inquiry process were studied by IR analysis
Tricomi Type Problem For Mixed Type Equation With Sub-Diffusion And Wave Equation, E. Karimov, S. Kerbal
Tricomi Type Problem For Mixed Type Equation With Sub-Diffusion And Wave Equation, E. Karimov, S. Kerbal
Scientific journal of the Fergana State University
In this paper, we have considered a Tricomi type problem for mixed type equation with Hilfer’s double order derivative sub-diffusion equation and classical wave equation in a composite domain. Main methods of the investigation are a method of integral equations and energy integrals’ method.
Copolymerization Of Methylacrylate And Acrylic Acid, N Y. Bozorov, V. O. Kudishkin
Copolymerization Of Methylacrylate And Acrylic Acid, N Y. Bozorov, V. O. Kudishkin
Scientific journal of the Fergana State University
Linear copolymers of methylacrylate and acrylic acid with different content of monomer units have been synthesized by classical radical copolymerization in dioxane solution and in the block. The composition of copolymers was determined. The relative activities of the monomers calculated by the methods of Fineman - Ross and Kelen -Tudos. It is shown that the activity of acrylic acid can vary depending on the medium in which copolymerization is carried out.
Defining The Antioxsidants Quantity In Certification Of The Chicken Meat, B. N. Sattarova, I. R. Asqarov, Sh. X. Abdulloev
Defining The Antioxsidants Quantity In Certification Of The Chicken Meat, B. N. Sattarova, I. R. Asqarov, Sh. X. Abdulloev
Scientific journal of the Fergana State University
The article presents an analysis of the results obtained by chromatography-mass-spectrometric studies to determine the mass fractions of certain antioxidants in chicken meat, the excessive amount of which seriously threatens human health. The advantages of this method in the certification of meat products are substantiated. It has been established that the content of alpha-tocopherol in chicken meat imported from some foreign countries is several times higher than that produced in local poultry farms.
Solution Of Cancerogen Asbestos Problems In Obtaining Harmless Fibre Products, M. A. Axmadaliev, I. R. Asqarov
Solution Of Cancerogen Asbestos Problems In Obtaining Harmless Fibre Products, M. A. Axmadaliev, I. R. Asqarov
Scientific journal of the Fergana State University
The article presents the ways of obtaining ecologic harmless composite materials based on mineral fibers in the replacement of asbestos containing goods
Formation Of Stochastic Competence In Mathematics Lessons, A. Yusupova, Z. Mukimova, Kh. Ibrokhimova
Formation Of Stochastic Competence In Mathematics Lessons, A. Yusupova, Z. Mukimova, Kh. Ibrokhimova
Scientific journal of the Fergana State University
This article presents methods for the formation of student stochastic competence.
Solving Differential Matrix Equations For Surface With Respect To Action Of Group Of Lorence, U. Bekbayeva, K. Muminov
Solving Differential Matrix Equations For Surface With Respect To Action Of Group Of Lorence, U. Bekbayeva, K. Muminov
Scientific journal of the Fergana State University
In The artlcle a description is given for the system of differential matrix equations, the solutions of which regenerate the class of surfaces in 4 – dimensional space, which are equivalent with respect to the action of group - O(3,1).
Copolymerization Of Methylacrylate And Acrylic Acid, N Y. Bozorov, V. O. Kudishkin
Copolymerization Of Methylacrylate And Acrylic Acid, N Y. Bozorov, V. O. Kudishkin
Scientific journal of the Fergana State University
Linear copolymers of methylacrylate and acrylic acid with different content of monomer units have been synthesized by classical radical copolymerization in dioxane solution and in the block. The composition of copolymers was determined. The relative activities of the monomers calculated by the methods of Fineman - Ross and Kelen -Tudos. It is shown that the activity of acrylic acid can vary depending on the medium in which copolymerization is carried out.
Tricomi Type Problem For Mixed Type Equation With Sub-Diffusion And Wave Equation, E. Karimov, S. Kerbal
Tricomi Type Problem For Mixed Type Equation With Sub-Diffusion And Wave Equation, E. Karimov, S. Kerbal
Scientific journal of the Fergana State University
In this paper, we have considered a Tricomi type problem for mixed type equation with Hilfer’s double order derivative sub-diffusion equation and classical wave equation in a composite domain. Main methods of the investigation are a method of integral equations and energy integrals’ method.
Sorption Of Copper (Ii), Nickel (Ii) And Cobalt (Ii) Ions Into The Ionite Modified By Polyphinylchloride And Polyethylene Polyamine, Kh Ismoilova, D Bekchanov, Sh Khasanov, M Baltaeva
Sorption Of Copper (Ii), Nickel (Ii) And Cobalt (Ii) Ions Into The Ionite Modified By Polyphinylchloride And Polyethylene Polyamine, Kh Ismoilova, D Bekchanov, Sh Khasanov, M Baltaeva
Scientific journal of the Fergana State University
IPolyphinylchloride was modified by polyethylene polyamine, and the ionites were studied in static conditions by the artificial solution of copper (II), nickel (II) and cobalt (II) ions. In static conditions, factors affecting the sorption process, such as time, temperature and concentration dependence were investigated. The results of the inquiry process were studied by IR analysis
Defining The Antioxsidants Quantity In Certification Of The Chicken Meat, B. N. Sattarova, I. R. Asqarov, Sh. X. Abdulloev
Defining The Antioxsidants Quantity In Certification Of The Chicken Meat, B. N. Sattarova, I. R. Asqarov, Sh. X. Abdulloev
Scientific journal of the Fergana State University
The article presents an analysis of the results obtained by chromatography-mass-spectrometric studies to determine the mass fractions of certain antioxidants in chicken meat, the excessive amount of which seriously threatens human health. The advantages of this method in the certification of meat products are substantiated. It has been established that the content of alpha-tocopherol in chicken meat imported from some foreign countries is several times higher than that produced in local poultry farms.
Solution Of Cancerogen Asbestos Problems In Obtaining Harmless Fibre Products, M. A. Axmadaliev, I. R. Asqarov
Solution Of Cancerogen Asbestos Problems In Obtaining Harmless Fibre Products, M. A. Axmadaliev, I. R. Asqarov
Scientific journal of the Fergana State University
The article presents the ways of obtaining ecologic harmless composite materials based on mineral fibers in the replacement of asbestos containing goods
Formation Of Stochastic Competence In Mathematics Lessons, A. Yusupova, Z. Mukimova, Kh. Ibrokhimova
Formation Of Stochastic Competence In Mathematics Lessons, A. Yusupova, Z. Mukimova, Kh. Ibrokhimova
Scientific journal of the Fergana State University
This article presents methods for the formation of student stochastic competence.
Constructing General Solution Of An Hyperbolic Equation With Two Singular Coefficients, A O’Rinov, А. Rafiqov
Constructing General Solution Of An Hyperbolic Equation With Two Singular Coefficients, A O’Rinov, А. Rafiqov
Scientific journal of the Fergana State University
equation of hyperbolic type, singular coefficient, general solution.
A Mixed Problem For A Fourth Order Equation With Singular Coefficients In A Rectangular, A.S V. Berdishev, M. Azizov
A Mixed Problem For A Fourth Order Equation With Singular Coefficients In A Rectangular, A.S V. Berdishev, M. Azizov
Scientific journal of the Fergana State University
In the present work with spectral method it was proved the uniqueness and existence of the solution of the mixed problem for a fourth order equation with singular coefficients in a rectangular domain.
The Use Of Interactive Methods To Increase The Efficiency Of Studying Physics In Secondary School, O Dehqonova, F Yusupova
The Use Of Interactive Methods To Increase The Efficiency Of Studying Physics In Secondary School, O Dehqonova, F Yusupova
Scientific journal of the Fergana State University
The article emphasizes interactive methods of teaching physics and their connections in the study of the subject’s of technology in secondary schools.
Useful And Harmful Propeties Of Natural And Synthetic Food Additive, B. Sattorova, I. Asqarov,, A. Joraev,, K. Kirgizov.
Useful And Harmful Propeties Of Natural And Synthetic Food Additive, B. Sattorova, I. Asqarov,, A. Joraev,, K. Kirgizov.
Scientific journal of the Fergana State University
The article discusses the useful and harmful properties of natural and synthetic food additives.
Obtaining Of Adsorbents From Fruit Seeds And Studying Their Physicochemical Properties, G’ Ochilov, G. Tursunova, R, Qarabaeva,, A Ibrohimov
Obtaining Of Adsorbents From Fruit Seeds And Studying Their Physicochemical Properties, G’ Ochilov, G. Tursunova, R, Qarabaeva,, A Ibrohimov
Scientific journal of the Fergana State University
The physicochemical properties of adsorbents obtained by thermal processing of stone fruit wastes were investigated. The possibility of their use for the purification of waste water from heavy metal ions in experiments with simulated waste water containing copper ions has been studied.
Some Aspects Of Assessment Of Soil Fertility, R. Qo’Ziev, N. Abduraxmonov, N. Хalilova
Some Aspects Of Assessment Of Soil Fertility, R. Qo’Ziev, N. Abduraxmonov, N. Хalilova
Scientific journal of the Fergana State University
In the article, it is shown that soil is a complex object to evaluate its fruitfullness, as well as analyzed different methods in this sphere. It emphasises the integrity of the usage of models of soil on evaluating of its fertility, the soil has its characteristics and peculatities and its formation of fruitfulness are conditioned by definite conditions.