Results 1 to 10 of about 2,520,715 (284)

Process Study on 3D Printing of Polymethyl Methacrylate Microfluidic Chips for Chemical Engineering [PDF]

open access: yesMicromachines
Microfluidic technology is an emerging interdisciplinary field that uses micropipes to handle or manipulate tiny fluids in chemistry, fluid physics, and biomedical engineering.
Zengliang Hu, Minghai Li, Xiaohui Jia
doaj   +2 more sources

Technological reliability of chemical engineering systems

open access: diamondТонкие химические технологии, 2016
A significant part of the gross domestic product is lost because of hitches followed by long downtime periods in industrial systems. This is a common problem in the industry of developed nations.
N. N. Prokhorenko, K. O. Goncharuk
doaj   +2 more sources

Iterative Chemical Engineering of Vancomycin Leads to Novel Vancomycin Analogs With a High in Vitro Therapeutic Index [PDF]

open access: yesFrontiers in Microbiology, 2018
Vancomycin is a glycopeptide antibiotic that inhibits transpeptidation during cell wall synthesis by binding to the D-Ala-D-Ala termini of lipid II. For long, it has been used as a last resort antibiotic.
Nigam M. Mishra   +18 more
doaj   +2 more sources

A Comparison Study for The Performance of Polyethersulfone Ultrafiltration Mixed Matrix Membranes in The Removal of Heavy Metal Ions from Aqueous Solutions

open access: yesIraqi Journal of Chemical and Petroleum Engineering, 2022
Polyethersulfone (PES) ultrafiltration membrane blending NaX zeolite crystals as a hydrophilic additive was examined for zinc (II) and lead ions Pb (II) removal from aqueous solutions. The effect of NaX zeolite content on the permeation flux and removal
Haider Nezar Abdulameer   +1 more
doaj   +1 more source

Emerging concepts in photocatalytic organic synthesis

open access: yesiScience, 2021
Summary: Visible light photocatalysis has become a powerful tool in organic synthesis that uses photons as traceless, sustainable reagents. Most of the activities in the field focus on the development of new reactions via common photoredox cycles, but ...
Susanne Reischauer, Bartholomäus Pieber
doaj   +1 more source

Atomically confined calcium in nitrogen-doped graphene as an efficient heterogeneous catalyst for hydrogen evolution

open access: yesiScience, 2021
Summary: Calcium is one of the most abundant and cheapest elements on earth. However, due to the lack of d-orbitals for chemical adsorption, it is generally considered as a stoichiometric reagent with no catalytic activities in heterogeneous catalysis ...
Jie Sun   +7 more
doaj   +1 more source

Advances in crumb rubber modified asphalt: From molecule to engineering

open access: yesHecheng xiangjiao gongye, 2022
The original bottle-neck of difficulty in processing, inconsistent performances and pollution during processing of crumb rubber modified asphalt (CRMA) were summarized and analyzed from chemical engineering perspective, the source, composition and basic ...
YU Xiao-xiao1; LI Yan-wei2; Cai Bin2; YAN Chuan-qi3; HUANG Wei-dong3; HUANG Bao-shan4; WANG Xiao-feng5; WANG Shi-feng1
doaj   +1 more source

Chemical engineering prospective; chemical product engineering

open access: yesآموزش مهندسی ایران, 2019
It is less than 20 years that the concept of chemical product engineering and chemical product engineer is introduced by chemical engineers. The concept is introduced by US universities and followed by the EU universities afterward.
Rahbar Rahimi
doaj   +1 more source

Non-steady diffusion and adsorption of organic micropollutants in ion-exchange membranes: effect of the membrane thickness

open access: yesiScience, 2021
Summary: There is no efficient wastewater treatment solution for removing organic micropollutants (OMPs), which, therefore, are continuously introduced to the Earth's surface waters. This creates a severe risk to aquatic ecosystems and human health.
Malgorzata Roman   +11 more
doaj   +1 more source

Chemical Composition of Frozen Biofortified Pepper and Pumpkin [PDF]

open access: yes, 2016
Practicability of the use of biofortified sweet pepper of Zoloto Skifov variety and pumpkins of Sviten variety for processing by freezing is proved.
Deinychenko, G. (Gregoriy)   +1 more
core   +2 more sources

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