The analysis of a new viscometer that takes the form of an oscillating plate, fabricated from silicon using the methods of micro-electro-mechanical-systems (MEMS) is considered. The instrument is designed principally for experimental use in the oil industry. The plate is 1.6mm wide, 2.4mm long, and 20μm thick. It is suspended from a 0.4mm thick support by 48 square cross-section legs, each of l...

Methods Ten HIV-1 ESN in HIV-discordant couples were enrolled at the Fann University hospital, Dakar, Senegal. Thirty HIV-1 infected patients (10 HIV-1 non transmitted partners in discordant coupes and 20 HIV-1 infected partners in HIV-concordant couples) and 10 HIV-negative unexposed subjects were included as controls. Levels of CD107a and b, and CD107a/b+IFN-g+ in CD8+ T cells sub-set were me...

High pressure viscosity data are necessary to complement fluid characterization, but their accurate determination is always a challenge due the lack of these data. This work focuses on characterizing four alcohols (1-propanol, 2-propanol, 1-pentanol and 2-pentanol) through measurements using two different equipment: falling body viscometer vibrating wire viscometer. Both techniques can measure ...

Blood viscosity was studied during extracorporeal circulation by means of a cone in cone viscometer. This rotational viscometer provides sixteen kinds of shear rate, ranging from 0.05 to 250.2 sec-1 • Merits and demerits of the equipment were described comparing with the capillary viscometer. In experimental study it was well demonstrated that the whole blood viscosity showed the shear rate dep...

New design of a viscometer based on the s tokes viscosity measurement method is proposed. The principle operation this viscosimetr use ball periodic alternated movement in horizontally positioned cuvette that filled with test liquid. appears under fluence magnetic field created by two electromagnets. Registration inside carried out using an optoelectronic pair. A distinctive feature proposed co...

In this work, we develop a proxy high-throughput viscometer for Newtonian fluids with viscosities between 1500 and 12 000 cP.

Purpose of research . Development theoretical premises for the new inertial viscometer, as well development an approximate model viscosity fluid flow using convolutional neural networks and laser speckle contrast imaging data. Methods The study consists two parts. first is devoted to a in toroidal channel еру viscometer. mathematical includes dimensionless equations Navier-Stokes convective hea...