Results 21 to 30 of about 59,488 (256)

Twofold role of calcined hydrotalcites in the degradation of methyl parathion pesticide

open access: yesBeilstein Journal of Nanotechnology, 2011
Methyl parathion (MP) is a very toxic organophosphate pesticide used as a non-systematic insecticide and acaricide on many corps. As MP and its by-products are highly toxic, they have to be retained to avoid pollution of rivers and lakes.
Alvaro Sampieri   +4 more
doaj   +1 more source

Preparation of a Master Fe–Cu Alloy by Smelting of a Cu-Bearing Direct Reduction Iron Powder

open access: yesMetals, 2019
Generally, the Cu-bearing direct reduction iron powder (CBDRI) obtained from a direct reduction-magnetic separation process of waste copper slag contains a high content of impurities and cannot be directly used to produce Cu-bearing special steel.
Liaoting Pan   +3 more
doaj   +1 more source

Effect of basicity on the reduction swelling properties of iron ore briquettes

open access: yesHigh Temperature Materials and Processes, 2021
The influence mechanism of basicity on the reduction swelling index (RSI) of iron ore briquettes was investigated using the SEM analysis and Factsage 7.3 thermodynamic calculations based on the addition of pure CaO to Bayan Obo iron concentrate.
Zhang Guo-Cheng   +4 more
doaj   +1 more source

Comparative study on refining of heavy rail steel by RH and VD

open access: yes工程科学学报, 2016
The total oxygen,the contents of[H] and[Al],the inclusions and the compositions of slag by RH and VD refining treatment are compared under the other same conditions. The results show that dehydrogenation by RH is better than VD,while deoxidation by VD is
QI Jiang-hua   +5 more
doaj   +1 more source

Polyoxometalate-intercalated layered double hydroxides as efficient and recyclable bi-functional catalysts for cascade reactions [PDF]

open access: yes, 2016
The polyoxometalate (POM) intercalated-layered double hydroxides (LDHs) have been widely used as heterogeneous catalysts. However, the application of POM-LDHs as bi-functional catalysts for cascade reaction has seldom been studied comparing with the ...
Angelescu   +41 more
core   +1 more source

Consideration for the correlation between basicity of oxide glasses and chemical shift of O1s binding energy in XPS [PDF]

open access: yes, 1998
Binding energy of O1s core electron measured in XPS is a candidate to determine new scale of Lewis basicity of oxide ion in glass. Some mathematical expressions for the basicity or XPS chemical shift, such as charge parameter and optical basicity, are ...
Miura, Yoshinari, Nanba, Tokuro
core   +1 more source

Photochemical Electrocyclic Ring Closure and Leaving Group Expulsion from N-(9-oxothioxanthenyl)Benzothiophene Carboxamides [PDF]

open access: yes, 2013
N-(9-Oxothioxanthenyl)benzothiophene carboxamides bearing leaving groups (LG− = Cl−, PhS−, HS−, PhCH2S−) at the C-3 position of the benzothiophene ring system photochemically cyclize with nearly quantitative release of the leaving group, LG−.
Sarker, Majher I.   +3 more
core   +3 more sources

High Acidity and Low Carbon-Coke Formation Affinity of Co-Ni/ZSM-5 Catalyst for Renewable Liquid Fuels Production through Simultaneous Cracking-Deoxygenation of Palm Oil

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2023
This study investigates the effect of chemically doped Co and Ni metals on ZSM-5 catalyst with respect to the catalysts’ characteristics and performance for palm oil cracking.
Istadi Istadi   +4 more
doaj   +1 more source

Reduction swelling mechanism of hematite fluxed briquettes

open access: yesHigh Temperature Materials and Processes, 2022
The reduction swelling behaviors of the fluxed briquettes with basicity (CaO/SiO2) in the range of 0.33–1.33 were determined by adding analytical-grade CaO.
Ping Wang   +4 more
doaj   +1 more source

On the Basicity of Systems of Sines and Cosines with a Linear Phase in Morrey-Type Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
In this work systems of sines $\sin \left(n+\beta \right)t,\, \, n=1,2, \ldots,$ and cosines $\cos \left(n-\beta \right)t,\, \, n=0,1,2, \ldots,$ are considered, where $\beta \in R-$is a real parameter. The subspace $M^{p,\alpha } \left(0,\pi \right)$ of
Fidan Seyidova
doaj   +1 more source

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