Agenparl

copper

Agenparl English Educazione Scienza e Tecnologia Social Network

DIVERSITY, STRUCTURE AND REGULATION OF MICROBIAL METALLOTHIONEIN: METAL RESISTANCE AND POSSIBLE APPLICATIONS IN SEQUESTRATION AND DETOXIFICATION OF TOXIC METALS

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 17 settembre 2020 Metallothioneins (MTs) are group of cysteine rich, universal, low molecular weight proteins distributed widely in almost all major taxonomic groups ranging from tiny microbes to highly organized vertebrates. The primary function of this protein is storage, transportation and binding of metals......
Agenparl English Educazione Social Network

COPPER COATING ON 3D-PRINTED PLASTIC FILTERS PROPOSED AS A PANDEMIC FIGHTER

Redazione
(AGENPARL) – BLOOMINGTON (INDIANA), mer 16 settembre 2020 INDIANAPOLIS — In the ongoing fight against COVID-19, experts on microbiology and copper are recommending an expanded use of the metal to reduce the virus’s spread. So might copper be incorporated into the construction of masks, the universally accepted virus-fighting personal item?......
Agenparl English Agroalimentare Economia Social Network

COMEX GOLD FUTURES – A LOOK AT RECENT MARKET DEVELOPMENTS

Redazione
(AGENPARL) – CHICAGO (ILLINOIS), mar 15 settembre 2020 Net positioning by managed money – the category that includes hedge funds, commodity trading advisors, etc. – shows a bullish bias. Net long positions are currently at around 100,000 contracts. This is on the high side by historical standards, but certainly not......
Agenparl English Educazione Scienza e Tecnologia Social Network

QM/MM MD SIMULATIONS REVEAL AN ASYNCHRONOUS PCET MECHANISM FOR NITRITE REDUCTION BY COPPER NITRITE REDUCTASE

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), lun 14 settembre 2020 Nitrite reductases are enzymes that aid in the denitrification process by catalyzing the reduction of nitrite to nitric oxide gas. Since this reaction is the first committed step that involves gas formation, it is regarded to be a vital step for......
Agenparl English Educazione Scienza e Tecnologia Social Network

DOES THE WAY CHARGES AND TRANSFERRED ELECTRONS ARE DEPICTED IN AN OXIDATION-REDUCTION ANIMATION AFFECT STUDENTS’ EXPLANATIONS?

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), lun 14 settembre 2020 This study compares students’ explanations of the oxidation-reduction reaction between silver nitrate and copper metal after viewing a chemical demonstration and one of four different particulate-level computer animations. The animations differed in the way the ionic charges were depicted (shown or......
Agenparl English Educazione Scienza e Tecnologia Social Network

VERSATILITY OF THE BIS(IMINOPYRROLYLMETHYL)AMINE LIGAND: TAUTOMERISM, PROTONATION, HELICAL CHIRALITY, AND SECONDARY COORDINATION SPHERE WITH HALOGEN BONDS IN THE FORMATION OF COPPER(II) AND NICKEL(II) COMPLEXES

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 10 settembre 2020 The reaction of N,N-di(2,6-bis(isopropyl)phenylimino-pyrrolyl-α-methyl)-N-methylamine H2L1 with copper(I) sources such as CuX (X = Cl (1), Br (2), I (3)) afforded the bis(chelated) ionic copper(II) complexes of the type [CuL1H]X. A similar type of mononuclear structure was obtained with Cu(NO3)2·(H2O)3. Conversely, binuclear......
Agenparl English Educazione Scienza e Tecnologia Social Network

A DFT AND MICROKINETIC STUDY OF PROPYLENE OXIDE SELECTIVITY OVER COPPER-BASED CATALYST: EFFECT OF COPPER VALENCE STATE

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), mer 09 settembre 2020 The development of high-performance copper-based catalysts is critical for the selective oxidation propylene in both technology and scientific fields, but the active site of copper, either Cu0, Cu+, or Cu0/Cu+, is still in debate. To better understand the effect of valence......
Agenparl English Educazione Scienza e Tecnologia Social Network

CU-CATALYZED P-C BOND FORMATION/CLEAVAGE: STRAIGHTFORWARD SYNTHESIS/RING-EXPANSION OF STRAINED CYCLIC PHOSPHONIUM

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), lun 07 settembre 2020 Upon reaction with copper(I), peri-halo naphthyl phosphines readily form peri-bridged naphthyl phosphonium salts. The reaction works with alkyl, aryl and amino substituents at phosphorus, with iodine, bromine and chlorine as a halogen. It proceeds under mild conditions and is quantitative, despite......
Agenparl English Educazione Social Network

COPPER COATED FACE MASKS COULD HELP SLOW TRANSMISSION OF COVID-19: U OF T RESEARCHERS

Redazione
(AGENPARL) – TORONTO (ONTARIO – CANADA), ven 04 settembre 2020 A team of researchers from the University of Toronto’s Faculty of Applied Science & Engineering are developing a new way to coat tiny particles of copper onto the inside of fabrics, including those used in face masks – a technology that could......
Agenparl English Educazione Scienza e Tecnologia Social Network

CU(II)-ALGINATE-BASED SUPERPOROUS HYDROGEL CATALYST FOR CLICK CHEMISTRY AZIDE–ALKYNE CYCLOADDITION TYPE REACTIONS IN WATER

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 03 settembre 2020 A novel sustainable hydrogel catalyst based on the reaction of sodium alginate naturally extracted from brown algae Laminaria digitata residue with copper(II) was prepared as spherical beads, namely Cu(II)-alginate hydrogel (Cu(II)-AHG). The morphology and structural characteristics of these beads were elucidated......

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