Results 21 to 30 of about 180,351 (273)

Relationship between Friction Coefficient, Viscosity and Compressibility of Polyethylene Glycol

open access: yesTribology Online, 2008
An ultrasonic liquid processor with the frequency of 20 kHz was used to cleave a principal chain in a polyethylene glycol molecule. The amount of the lubricant molecules cleaved by the ultrasonic disruption was evaluated by the kinematic viscosity ...
Kazuaki Hachiya, Tatsuya Nitta
doaj   +1 more source

Co-oxidation kinetic model for the thermal oxidation of polyethylene-unsaturated substrate systems [PDF]

open access: yes, 2013
The thermal oxidation of polyethylene (PE) impregnated by the methyl esters of unsaturated fatty acids (UFEs) was studied using chemiluminescence, and infra-red spectrophotometry.
RYCHLÝ, Jozef   +3 more
core   +1 more source

Synthesis by High-Efficiency Liquid-Phase (HELP) Method of Oligonucleotides Conjugated with High-Molecular Weight Polyethylene Glycols (PEGs)

open access: yesBiological Procedures Online, 1998
The chemical modification of synthetic oligonucleotides has recently been investigated to improve their pharmacological utilization. In addition to chemical alterations of the backbone and of the heterocyclic bases, their conjugation with amphiphylic ...
Bonora GM, Zaramella S, Veronese FM
doaj   +1 more source

Comparison of Two Types of 1-L Polyethylene Glycol-ascorbic Acid as Colonoscopic Bowel Preparation: A Prospective Randomized Study

open access: yesThe Korean Journal of Gastroenterology, 2022
Background/Aims: Recently, 1-L polyethylene glycol-ascorbic acid (PEG-Asc) has been used to reduce the volume of preparation agents in colonoscopy. This clinical trial aimed to compare the efficacy and safety of two types of 1-L PEG-Asc (CleanViewAL ...
Suh Hyun Choi   +10 more
doaj   +1 more source

Kinetic modelling of phenols consumption during polyethylene thermal oxidation [PDF]

open access: yes, 2013
Irganox 1010 stabilized PE was monitored by carbonyl build-up and DSC under oxygen. A scheme for PE stabilization by phenols was implemented and its kinetic parameters were calculated from experimental results.
RICHAUD, Emmanuel
core   +1 more source

Influence of certain adsorbents on the in vitro availability of lidocaine from some suppository bases [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 1999
The effect of porous calcium silicate (Florite R) and microcryst. cellulose (Avicel PH 102) on the physicochem. characterizations and dissoln. rate of lidocaine (LD) and consequently the effect on the in vitro release of LD from some suppository bases ...
M. Abd El-Mohsen   +3 more
doaj   +1 more source

The application of microwave formulation and isothermal titration calorimetry for pharmaceutical compounds [PDF]

open access: yes
Solid dispersions are commonly used to overcome bioavailability issues of poorly water soluble drugs. Various preparation methods along with carrier systems have been used to develop solid dispersions.
Hussain, Talib
core   +3 more sources

Enhancing Dissolution of Ibuprofen via Solid Dispersion Using Hydrophilic Carrier and Fast Dissolving Sugars

open access: yesAl-Mustansiriyah Journal of Pharmaceutical Sciences, 2014
In this study, solid dispersion using hydrophilic carriers (polyethylene glycols) and fast dissolving sugars (sorbitol and lactose) has been employed to enhance dissolution and hence the bioavailability of ibuprofen.
Wedad Kamal Ali   +3 more
doaj   +1 more source

Effect of polyethylene glycol mixtures as ointment base on the physicochemical properties of Lavsan atraumatic wound dressings

open access: yesТонкие химические технологии, 2019
Objectives. Modern atraumatic wound dressings are based on polyethylene terephthalate, or Lavsan, which is shaped to form threads. The aim of the study was to determine the reasons for Lavsan woven nets’ hardening and becoming more trauma-prone during ...
A. A. Korolchuk   +3 more
doaj   +1 more source

Methods of Conservation of Archaeological Leather Artefacts on the Example of Fragments of Shoes from The Archaeological Excavations in Perm in 2020.

open access: yesАрхеология евразийских степей, 2021
The article presents an overview of the methods of conservation of archaeological leather artefacts based on national publications. The overview covers the methods of the mid XX - early XXI centuries, among which there are both outdated methods which ...
Natalia A. Churilova
doaj   +1 more source

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