Online ISSN: 2515-8260

Keywords : viscosity

“Comparative Study Of Temperature Effect On Viscosity And Apparent Molar Volumes Of Potassium Aluminium Sulphate In Binary Mixture Of Aqueous DMSO And Aqueous DMF.”

Pratibha G Raundal; Maqdoom Farroqui; Sayyed S Kasim

European Journal of Molecular & Clinical Medicine, 2021, Volume 8, Issue 1, Pages 1122-1133

Viscosity B coefficients and apparent molar volumes (фv) for potassium aluminium sulphate in pure Dimethylformamide (DMF) and pure Dimethyl sulphoxide (DMSO) and also aqueous Dimethylformamide (DMF) and aqueous Dimethyl sulphoxide (DMSO) were studied from density (ρ) and viscosity (η) at various temperatures as 308.15, 313.15, 318.15 and 323.15 K with help of bicapillary pycnometer and Ubbelohde viscometer instruments respectively.

Study Of Physico-Chemical Properties Of Sodium Salt Carboxymethyl Starch

Saparov Sanjar Yusupboyevich; Makhkamov Muzaffar Abdugapparov; Kholmuminov Abdufatto

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 7, Pages 1034-1038

In this work, samples of sodium salt of carboxymethyl starch (Na-KMK) were synthesized by chemical modification of corn starch in the solid phase. X-ray studies of the structure of the synthesized polymers were carried out. The rheological properties of aqueous solutions of synthesized Na-KMK were studied by rotational viscometry. It was found that an increase in the degree of substitution of Na-KMK leads to a decrease in the viscosity of its solutions.

Stationary Flow Of A Viscous Fluid In A Flat Channel With Permeable Walls ( In The Example Of Blood Circulation )

Navruzo Kuralbay Professor; Begjanov Amirbek Shixnazarovich; Khujatov Nurbek Jumaboyevich

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 3, Pages 2731-2738

This article is devoted to the study of the stationary flow of a viscous fluid in a flat channel with permeable walls. As is known, in a pulsating flow in pipelines, a pressure wave propagates through its walls, which is called a pulse wave. This wave, as it moves away from the initial cross section, gradually weakens and practically attenuates at the ends. In the present work, stationary flows of a viscous fluid in a plane channel with permeable walls are considered to be sufficiently long for the channel. The problems are solved and calculation formulas for determining the longitudinal and transverse speeds are obtained. Formulas are also found and numerical calculations are made that determine the change in pressure and fluid flow in the direction of the main stream for various values of the permeability coefficient. It is shown that at lower values of the coefficient of permeability, the pressure is distributed along the flow according to linear laws, and the fluid flow rate remains almost constant along the channel length. Other values of the permeability coefficient, it is characteristic that with an increase in the permeability coefficient of the pressure distribution differs significantly from the linear distribution, with the maximum deviation in the middle of the channel. The fluid flow rate with an increase in the permeability coefficient increases several times in the initial section compared to the fluid flow rate, in the same pressure drop in the flow of a viscous fluid in a flat channel with impermeable walls.

Development Of Gel Technology For Anti-Inflammatory Dental Practice

Vakhidova Nargiza Mukhiddin qizi; Rizayeva Nilufar Mukhutdinovna Khusainova; Rayhona Ashrafovna Tulyaganov Bobur Sabirovich

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 3, Pages 3791-3803

This article discusses the idea of conducting research to study the quality and quantity of the gel, which is based on the tincture of mavrak leaves, effective, harmless, easy to use, shelf life. There are also conclusions about the research on the selection of the composition and technology of Mavrak gel. There are several advantages of preparing gel on the basis of mavrak tincture on the basis of sodium carboxymethylcellulose (Na-KMC).

Transport Properties Of Thiaminehydrochloridein Binary Aqueous Mixtures Of Galactose

Ramesh Chand Thakur; Ramandeep Kaur; Harpreet Kaur

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 7, Pages 3425-3431

Structure proting and breaking capacity of thiamine hydrochloride in binary aqueous mixtures of galactose has been determined in the present study at four equidistant different temperatures by using different transport parameters.It has been found that thiamine hydrochloride acts as structure breaker in binary aqueous solutions of galactose and ion-solvent interactions increase with the increase in temperature.