Results 21 to 30 of about 43,209 (289)

Studies on Polyethers Produced by Red Algae

Marine Drugs, 2010
Two novel squalene-derived triterpenes, spirodehydrovenustatriol (3) and 14-keto-dehydrothyrsiferol (4) were isolated from the red alga Laurencia viridis, together with two new and unusual C17 terpenoids, adejen A (5) and B (6).
Francisco Cen-Pacheco, Laurette Nordström, María Luisa Souto, Manuel Norte Martín, José Javier Fernández, Antonio Hernández Daranas   +5 more
doaj   +1 more source

Comparative assessment of width of neutral zones recorded using two neutral zone impression methods (phonetic and swallowing) and two different materials (tissue conditioner and polyether): A crossover pilot study

Dentistry and Medical Research, 2021
Statement of Problem: Medium body polyether impression material has been recently used as neutral zone recording material. However, there is a lack of studies comparing it with routinely used material.
Manjita M Parab, Meena A Aras, Vidya Chitre, Anchal Qanungo   +3 more
doaj   +1 more source

Composite sPEEK with Nanoparticles for Fuel Cell's Applications: Review [PDF]

, 2012
The membranes in fuel cells must both conduct protons and serve as a barrier for fuel. This review discusses modifications nanoparticles of sPEEK (sulfonated polyether-ether ketone), sPEEK have advantages properties as fuel cell’s membranes such as ...
Arief , Rahman Hakim, Tutuk , Djoko Kusworo, Aprilina , Purbasari, Eniya, Listiani Dewi   +3 more
core   +1 more source

Effect of storage time and temperature change on the dimensional stability of polyvinyl siloxane and polyether impression materials: An in vitro study

Journal of Dr. NTR University of Health Sciences, 2016
Background: Synthetic elastomers such as polyvinyl siloxane and polyether are the most commonly used impression materials. The accuracy and dimensional stability of these materials are influenced by the temperature, humidity, and storage time.
William Thomas, Pradeep Kumar, Susan Mathew, Sudeep Sarathchandran, P Jayanthi   +4 more
doaj   +1 more source

Polyether-Based Thermoviscosifying Polymers for Enhanced Oil Recovery: Emulsion versus Powder

, 2020
Thermoviscosifying polymers (TVPs) are a class of promising materials for chemically enhanced oil recovery (EOR) because of their unique viscosity increment with increasing temperature.
Xin Su, Changqing Li (333970), Mengmeng Wang (540017), Mengmeng Wang, Hongping Quan, Hongping Quan (3794755), Peihui Han, Gang Sun (80623), Xin Su (338394), Yujun Feng, Changqing Li, Guowen Zhou (8506869), Yujun Feng (1488094), Guowen Zhou, Peihui Han (6855932), Gang Sun   +15 more
core   +1 more source

NarAB Is an ABC-Type Transporter That Confers Resistance to the Polyether Ionophores Narasin, Salinomycin, and Maduramicin, but Not Monensin

Frontiers in Microbiology, 2020
Polyether ionophores are antimicrobial compounds used as feed additives in poultry feed to control diseases caused by coccidia. In addition to the anticoccidial activity of these compounds, polyether ionophores also contain antibacterial properties ...
Ali-Oddin Naemi, Hymonti Dey, Nosheen Kiran, Sarah Torbergsen Sandvik, Jannice Schau Slettemeås, Live L. Nesse, Roger Simm   +6 more
doaj   +1 more source

Effect of amine containing compatibilizers on mechanical and rheological properties of a two-component silyl-terminated polyether/epoxy resin system; pp. 175–182 [PDF]

Proceedings of the Estonian Academy of Sciences, 2018
In this work we study the influence of compatibilizers on tensile and rheological properties of new silyl-terminated polyether/epoxy resin two-component systems.
Ritvars Berzins, Remo Merijs Meri, Janis Zicans   +2 more
doaj   +1 more source

Preparation and Properties of Different Polyether-Type Defoamers for Concrete

, 2022
In this study, a series of polyether-type defoamers for concrete which consist of the same alkyl chain (hydrophobic part) but different polyether chains (hydrophilic part) was prepared, and the structure–property relationship of the defoamers was ...
Shen, Fei, Fei Shen, Chen, Jian, Shan, Guangcheng, Zhu, Bosong, Guangcheng Shan, Gao, Nanxiao, Bosong Zhu, Min Qiao, Jingzhi Wu, Jian Chen, Nanxiao Gao, Wu, Jingzhi, Qiao, Min   +13 more
core   +1 more source

Research Progress in the Biosynthetic Mechanisms of Marine Polyether Toxins

Marine Drugs, 2019
Marine polyether toxins, mainly produced by marine dinoflagellates, are novel, complex, and diverse natural products with extensive toxicological and pharmacological effects. Owing to their harmful effects during outbreaks of marine red tides, as well as
Xiukun Wan, Ge Yao, Yanli Liu, Jisheng Chen, Hui Jiang   +4 more
doaj   +1 more source

Elastomeric Polyether-Ester Block Copolymers. I. Structure-Property Relationships of Tetramethylene Terephthalate/Polyether Terephthalate Copolymers

, 1977
The properties of elastomeric tetramethylene terephthalate/polyether terephthalate copolymers have been related to the chemical structure, chain length, and concentration in the copolymers of the PTMEG-, PEG-, and PPG-derived polyether units.
J. R. Wolfe
core   +1 more source