Results 31 to 40 of about 1,484,765 (329)

Development and validation of the high-pressure liquid chromatographic method for the quantitative determination of propylthiohinothiadiazole [PDF]

open access: yesThe Moldovan Medical Journal, 2020
Background: Propylthiohinothiadiazole is a thiadiazole derivative with pronounced antimycobacterial action. Substance is researched in order to develop methods of analysis and standardization, analytical documents regulating quality for use as an active
Andrei Uncu
doaj   +1 more source

Equation of state of liquid Indium under high pressure

open access: yesAIP Advances, 2015
We apply an equation of state of a power law form to liquid Indium to study its thermodynamic properties under high temperature and high pressure. Molar volume of molten indium is calculated along the isothermal line at 710K within good precision as ...
Huaming Li, Yongli Sun, Mo Li
doaj   +1 more source

Investigation and prediction of slug flow characteristics in highly viscous liquid and gas flows in horizontal pipes [PDF]

open access: yes, 2015
Slug flow characteristics in highly viscous liquid and gas flow are studied experimentally in a horizontal pipe with 0.074 m ID and 17 m length. Results of flow regime map, liquid holdup and pressure gradient are discussed and liquid viscosity effects ...
Lao, Liyun, Yeung, H., Zhao, Y.
core   +1 more source

Simulations of splashing high and low viscosity droplets

open access: yes, 2018
In this work simulations are presented of low viscosity ethanol and high viscosity silicone oil droplets impacting on a dry solid surface at atmospheric and reduced ambient pressure.
Boelens, Arnout M. P., de Pablo, Juan J.
core   +1 more source

High pressure falling sinker liquid viscosity determination without supplementary density data : a new approach [PDF]

open access: yes, 2009
Accurate measurement and determination of liquid viscosity data under high pressure conditions requires knowledge of liquid density data. In this study, a high pressure falling sinker-type viscometer was used to determine the viscosity of n-dodecane at ...
Schaschke, C.J., Zeng, Minyu
core   +1 more source

Determination of carbamazepine in serum and saliva samples by high performance liquid chromatography with ultraviolet detection [PDF]

open access: yesVojnosanitetski Pregled, 2009
Background/Aim. Carbamazepine is antiepileptic drug widely used for the treatment of epilepsy. Due to low therapeutic index of carbamazepine there is a need for routine measuring its concentrations in biological fluids.
Đorđević Snežana   +2 more
doaj   +1 more source

High Pressure Rheology of Lubricants (Part 5)

open access: yesTribology Online, 2022
The Walther equation is often used for the viscosity temperature characteristics of lubricants. However, it was found that it cannot be applied to high pressure viscosity.
Masato Kaneko
doaj   +1 more source

High pressure liquid gas pump [PDF]

open access: yes, 1972
Design and development of two types of pumps for handling liquefied gases are discussed. One pump uses mechanical valve shift and other uses pneumatic valve shift.
Acres, R. L.
core   +1 more source

Liquid State Anomalies for the Stell-Hemmer Core-Softened Potential

open access: yes, 1998
We study the Stell-Hemmer potential using both analytic (exact $1d$ and approximate $2d$) solutions and numerical $2d$ simulations. We observe in the liquid phase an anomalous decrease in specific volume and isothermal compressibility upon heating, and ...
A. Ben-Naim   +32 more
core   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

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