scholarly journals The choice of adhesive for the production of yarn glue method

2021 ◽  
Vol 54 (4) ◽  
pp. 43-46
Author(s):  
Pavel N. Rudovsky ◽  
Irina S. Belova
Keyword(s):  
Comparative Analysis ◽  
Mathematical Models ◽  
Adhesive Joint ◽  
Adhesion Forces ◽  
Adhesive Composition ◽  
Adhesive Compound ◽  
Glue Method ◽  
Elementary Fiber

It is proposed to use sericin, a component of silkworm cocoons, as an adhesive compound for the production of yarn by the adhesive method. An experiment was conducted to study the dependence of the adhesion forces of the binder to cellulose on the concentration of the adhesive substance on the example of solutions of PVA, PVA and sericin. A comparative analysis of this dependence is carried out. Mathematical models are constructed to predict the strength of the adhesive joint depending on the concentration of the adhesive composition. The calculation of the adhesion forces per one elementary fiber is carried out.

scholarly journals BEHAVIOR OF THE PHARMACOKINETICS OF ENROFLOXACIN IN THE PHASE SPACE

2019 ◽  
Vol 7 (4) ◽  
pp. 288-293
Author(s):  
Miroslav Vasilev ◽  
Galya Shivacheva
Keyword(s):  
Comparative Analysis ◽  
Plasma Concentration ◽  
Phase Space ◽  
Differential Equations ◽  
Mathematical Models ◽  
Blood Plasma ◽  
Graphical Representation ◽  
Nonlinear Differential Equations ◽  
Qualitative Assessment ◽  
Second Order Differential Equations

Phase space is an approach for analysis of nonlinear differential equations. The graphical solutions that are obtained are convenient for qualitative assessment of the behavior of systems and processes. A comparative analysis of the pharmacokinetics of the antibiotic enrofloxacin administered intravenously in dogs and cats has been performed in the present study. The mathematical models that represent the change in blood plasma concentration of the two groups of animals are described by second-order differential equations. For the graphical representation of phase trajectories using the fluoroquinolone, the Mathcad program tools are used. The properties of the peculiar points are determined based on the received images.

Sealing critical connections of the cylinder head with adhesives

2020 ◽  
pp. 313-317
Author(s):  
M.E. Zakharova ◽  
P.Yu. Vasilieva ◽  
N.A. Arsenov
Keyword(s):  
Comparative Analysis ◽  
Cylinder Head ◽  
Joint Strength ◽  
Adhesive Composition ◽  
Adhesive Compositions

The classification of adhesive compositions is considered. The requirements for adhesive compositions that provide a given joint strength are given. The design of the cylinder head and its components is described and the use of adhesive composition as a means of sealing is justified. The criteria for selecting the optimal adhesive connection are presented. A comparative analysis of adhesive compositions of different brands is presented.

scholarly journals Mathematical Models for COVID-19 Pandemic: A Comparative Analysis

2020 ◽  
Vol 100 (4) ◽  
pp. 793-807 ◽  
Author(s):  
Aniruddha Adiga ◽  
Devdatt Dubhashi ◽  
Bryan Lewis ◽  
Madhav Marathe ◽  
Srinivasan Venkatramanan ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Mathematical Models

Comparative analysis of mathematical models for supercritical extraction simulation from industrially valuable lamiaceae herbs

2013 ◽  
Vol 92 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Marko Stamenic ◽  
Jasna Ivanovic ◽  
Slavica Grujic ◽  
Stoja Milovanovic ◽  
Irena Zizovic ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Mathematical Models ◽  
Supercritical Extraction

scholarly journals Entrepreneurship in national economics: significance and potential of development

2020 ◽  
Vol 9 (27) ◽  
pp. 428-435
Author(s):  
I. S. Pinkovetskaia ◽  
N. R. Aleksandrova ◽  
O. N. Mingazova
Keyword(s):  
Comparative Analysis ◽  
Mathematical Models ◽  
Practical Significance ◽  
Social Significance ◽  
Entrepreneurship Development ◽  
The Social ◽  
Global Entrepreneurship

The purpose of the study was to develop proposals for the use of two comprehensive indexes to assess the social significance and the existing potential for entrepreneurship development in different countries. The study used information provided in the report on the Global entrepreneurship monitoring project. At the same time, the opinions of residents of 48 countries for 2018 were considered. The first index included four indicators, and the second index included five indicators. Mathematical models were developed and the values of these two complex indexes were calculated. The average values of the indexes and their ranges of change for most countries are determined. Lists of countries with high and low index values are given. A comparative analysis of the values of complex indexes typical for Russia and other countries is presented. The results of research are new and original, have scientific and practical significance.

scholarly journals Comparative analysis of metrological certification methods of mathematical models

2015 ◽  
Vol 3 (4(75)) ◽  
pp. 9
Author(s):  
Андрей Дмитриевич Тевяшев ◽  
Юрий Сергеевич Асаенко ◽  
Анатолий Михайлович Кобылин
Keyword(s):  
Comparative Analysis ◽  
Mathematical Models ◽  
Metrological Certification

scholarly journals AN ALIENATION MODEL IN GENERAL-PLAN ASSESSMENT

2020 ◽  
pp. 5-5
Author(s):  
Regina Ya. Orzhekhovskaya ◽  
Sergey S. Titov
Keyword(s):  
Comparative Analysis ◽  
Mathematical Models ◽  
Modeling Method ◽  
General Plan ◽  
Architectural Planning

The article describes a modeling method with reference to comparative analysis of architectural planning proposals for a space or area. The mathematical models considered are based on the use of various measures of interaction between elements of the plan.

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