Results 61 to 70 of about 485,699 (306)

Three-phase packed bed reactor with an evaporating solvent—II. Modelling of the reactor [PDF]

open access: yes, 1990
In this paper two models are presented for a three-phase catalytic packed bed reactor in which in evaporating solvent is used to absorb and remove most of the reaction heat. A plug flow model and a model comprising mass and heat dispersion in the reactor
Borman, P.C.   +3 more
core   +2 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova   +25 more
wiley   +1 more source

Determination of squalene in edible oils by transmethylation and GC analysis

open access: yesMethodsX, 2019
Squalene is a triterpenoid with medicinal, therapeutic and cosmetic applications. There is interest in identifying novel sources of squalene, creating a need for a rapid and accurate method of squalene determination.
Suzanne M. Budge, Christopher Barry
doaj   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Basic Ionic Liquid as Catalyst in Synthesis of Dimethyl 4-(2-(2,6-Bis(methoxycarbonyl)pyridine-4-yl)vinyl)pyridine-2,6-dicarboxylate

open access: yesJournal of Chemistry, 2018
In the lanthanide complexes with some organic ligands, the use of pyridine-2,6-dicarboxylic acid derivatives as sensitizers was better than using others. In this paper, dimethyl 4-(2-(2,6-bis(methoxycarbonyl)pyridine-4-yl)vinyl)pyridine-2,6-dicarboxylate
Xiaobing Liu, Yulin Hu, Wei Fu
doaj   +1 more source

Taming the Base Catalyzed Sol–Gel Reaction: Basic Ionic Liquid Gels of SiO2 and TiO2 [PDF]

open access: yes, 2017
We describe the autocatalytic synthesis of SiO2 and TiO2 ionic liquid gels using a basic ionic liquid as the solvent, template, and catalyst for the sol–gel reaction.
Bothwell, Kyra M., Marr, Patricia C.
core   +2 more sources

Investigation of the Degradation of Chelate Complexes in Liquid Redox Desulfurization Processes [PDF]

open access: yes, 2020
Metal complexes such as Fe‐EDTA, which are used as pseudo‐catalysts or oxygen carriers in wet oxidative desulfurization processes, are subject to a degradation mechanism that significantly influences the economics of such processes. Therefore, this study
Guetta, Zion   +4 more
core   +1 more source

Biodiesel by Co-processing animal fat/vegetable oil mixtures over basic heterogeneous Ca catalyst

open access: yesCleaner Engineering and Technology, 2020
The use of vegetable oils to produce biodiesel raises several sustainability issues, namely the fuel/food conflict. The high cost of vegetable oils and an expensive homogeneous base catalyzed process encourages the search for alternative raw materials ...
Ana Paula Soares Dias   +3 more
doaj   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi   +7 more
wiley   +1 more source

Selective hydrodeoxygenation of α, β-unsaturated carbonyl compounds to alkenes

open access: yesNature Communications
Achieving selective hydrodeoxygenation of α, β-unsaturated carbonyl groups to alkenes poses a substantial challenge due to the presence of multiple functional groups.
Tianjiao Wang   +10 more
doaj   +1 more source

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