Results 21 to 30 of about 992,908 (347)

Fabrication of CdS Frame‐in‐Cage Particles for Efficient Photocatalytic Hydrogen Generation under Visible‐Light Irradiation

open access: yesAdvances in Materials, 2020
The design of advanced structures for semiconductor photocatalysts is an effective approach to enhance their performance toward solar‐to‐chemical energy conversion.
Peng Zhang, Deyan Luan, X. Lou
semanticscholar   +1 more source

Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea

open access: yesCommunications Earth & Environment, 2021
Phases of high bottom water temperature in the northwestern Barents Sea caused repeated destabilization of methane gas hydrates since the last glacial, according to a foraminifera Mg/Ca bottom water temperature record and hydrate stability ...
Naima El bani Altuna   +5 more
doaj   +1 more source

Generalized Cages [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2015
Let $2 \leq k_1 < k_2 < \ldots < k_t $, $3 \leq g_1 < g_2 < \ldots < g_s < N$ be integer parameters. A $(k_1,k_2,\ldots,k_t;g_1,g_2,\dots,g_s;N)$-graph is a graph that contains vertices of degrees $k_1,k_2,\ldots,k_t$ but no other degrees and cycles of lengths $g_1,g_2,\dots,g_s$ but no other cycles of length $< N$.
Boben, Marko   +2 more
openaire   +3 more sources

Energy-efficient motors [PDF]

open access: yes, 2008
The use of a copper-squirrel cage in induction motors has been analyzed testing a prototype rated 1.1 kW and comparing the performances with a twin machine with an aluminum cage. The comparison has been made using torque, efficiency, starting torque, and
Boglietti, Aldo   +3 more
core   +1 more source

Elucidating heterogeneous photocatalytic superiority of microporous porphyrin organic cage

open access: yesNature Communications, 2020
The investigation on the catalytic properties of porous organic cages is still in an initial stage. Herein, the reaction of cyclohexanediamine with 5,15-di[3’,5’-diformyl(1,1’-biphenyl)]porphyrin affords a porphyrin tubular organic cage, PTC-1(2H ...
Chao Liu   +8 more
semanticscholar   +1 more source

A toy model mimicking cage effect, structural fluctuations and kinetic constraints in supercooled liquids [PDF]

open access: yes, 2014
The cage effect is widely accepted as the basic microscopic mechanism underlying the physics of supercooled liquids in contrast with usual liquids which are governed by molecular interactions only.
Teboul, Victor
core   +5 more sources

Ice-sheet-driven methane storage and release in the Arctic

open access: yesNature Communications, 2016
Methane release across the Arctic continental shelf has been attributed to modern dissociation of gas hydrate, accelerated by ocean warming. Here, the authors show that thermogenic methane was stored as subglacial gas hydrate during the last glaciation ...
Alexey Portnov   +3 more
doaj   +1 more source

Cage within a cage [PDF]

open access: yesNature Chemistry, 2009
A 'Russian doll' endohedral fullerene has been made, comprising a carbon dimer within a scandium tetrahedron, all encased by a C80 cage.
openaire   +1 more source

Definitive crystal structure of 1,1'-bis[1,2-dicarba-closo-dodecaborane(11)] [PDF]

open access: yes, 2014
In the title compound, C4H22B20, the two {1,2-closo-C2B10H11} cages are linked across a centre of inversion with a C—C distance of 1.5339 (11) Å.
Man, Wing   +2 more
core   +3 more sources

Caged Phosphoproteins

open access: yesJournal of the American Chemical Society, 2004
We present the chemical and biological synthesis of caged phosphoproteins using the in vitro nonsense codon suppression methodology. Specifically, phosphoamino acid analogues of serine, threonine, and tyrosine with a single photocleavable o-nitrophenylethyl caging group were synthesized as the amino acyl tRNA adducts for insertion into full-length ...
Rothman, Deborah M.   +5 more
openaire   +3 more sources

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