Results 71 to 80 of about 183,819 (280)

Mechanism of Semi-Hydrogenation of Trace Acetylene in Ethylene by [MB12Hx]2-

open access: yesTaiyuan Ligong Daxue xuebao
[Purposes] The main problem of semi-hydrogenation of trace acetylene in ethylene is excessive hydrogenation. High concentration of ethylene is the main cause of excessive hydrogenation, so it is important to design a catalyst with acetylene enrichment ...
CHEN Kangjie   +4 more
doaj   +1 more source

Selective photocatalytic hydrogenation of citral over pure TiO 2 nanoparticle

open access: yesMaterials Research Express, 2022
The α , β -unsaturated aldehydes selective hydrogenation, especially the C=O bond, is an extremely challenging topic in the field of catalysis. In this paper, a series of pure TiO _2 photocatalysts obtained at various calcination temperature were tested ...
Chao Luo   +6 more
doaj   +1 more source

Hydrogen Dissociation and Diffusion on Ni and Ti -doped Mg(0001) Surfaces

open access: yes, 2008
It is well known, both theoretically and experimentally, that alloying MgH$_2$ with transition elements can significantly improve the thermodynamic and kinetic properties for H$_2$ desorption, as well as the H$_2$ intake by Mg bulk.
A. Amieiro   +7 more
core   +1 more source

Hybrid dynamic modeling of 4-CBA hydrogenation fixed-bed catalytic reactor of PTA production plant [PDF]

open access: yes, 2012
In this paper, a dynamic hybrid model of 4-carboxybenzaldehyde (4-CBA) hydrogenation fixed-bed catalytic reactor of Purified Terephthalic Acid (PTA) production plant has been developed. At the first step, the deactivation model of the reaction system has
Azarpour, Abbas, Zahedi, Gholamreza
core   +1 more source

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

open access: yesMolecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed   +10 more
wiley   +1 more source

Tuning the ferromagnetic properties of hydrogenated GaMnAs

open access: yes, 2005
Hydrogenation and posthydrogenation annealings have been used as a very efficient tool to tune the hole density over a wide range, at fixed magnetic moment concentration, in thin GaMnAs layers.
Largeau, Ludovic   +4 more
core   +1 more source

Revisiting the hydrogen storage behavior of the Na-O-H system [PDF]

open access: yes, 2015
Solid-state reactions between sodium hydride and sodium hydroxide are unusual among hydride-hydroxide systems since hydrogen can be stored reversibly. In order to understand the relationship between hydrogen uptake/release properties and phase/structure ...
Gregory, Duncan H.   +2 more
core   +2 more sources

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

open access: yesMolecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak   +4 more
wiley   +1 more source

Internal lattice oxygen sites invert product selectivity in electrocatalytic alkyne hydrogenation over copper catalysts

open access: yesNature Communications
Copper-based catalysts exhibit excellent performance of electrocatalytic alkynes hydrogenation, especially for the selective alkynes hydrogenation toward alkenes.
Mengyu Li   +11 more
doaj   +1 more source

Site-dependent hydrogenation on graphdiyne

open access: yes, 2014
Graphene is one of the most important materials in science today due to its unique and remarkable electronic, thermal and mechanical properties. However in its pristine state, graphene is a gapless semiconductor, what limits its use in transistor ...
Autreto, P. A. S.   +2 more
core   +1 more source

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