Results 31 to 40 of about 3,092,461 (356)

The SO(32) Heterotic and Type IIB Membranes [PDF]

open access: yes, 1998
A two dimensional anomaly cancellation argument is used to construct the SO(32) heterotic and type IIB membranes. By imposing different boundary conditions at the two boundaries of a membrane, we shift all of the two dimensional anomaly to one of the ...
Aldabe, F., Larsen, A. L.
core   +2 more sources

Spherosome Membranes [PDF]

open access: yesPlant Physiology, 1972
Spherosomes are bounded by unusual single-line "membranes" which measure 2 to 3.5 nanometers in width, contrasted to the well known tripartite unit-membranes which measure 6 to 8.5 nanometers in over-all thickness. Juxtaposed externally (from the side addressing the hyaloplasm), two spherosomal membranes adjoin to form a thicker single line, but ...
L Y, Yatsu, T J, Jacks
openaire   +2 more sources

A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

open access: yesChemElectroChem, 2022
In fuel cells, the generally low oxygen reduction reactions (ORR) rate at the cathode is a major factor limiting the overall performance of fuel cell, so the development of high‐performance, stable and inexpensive ORR electrocatalysts is a major ...
Qiang Zeng   +9 more
doaj   +1 more source

Graphene-polyelectrolyte multilayer membranes with tunable structure and internal charge [PDF]

open access: yes, 2020
One great advantage of graphene-polyelectrolyte multilayer (GPM) membranes is their tunable structure and internal charge for improved separation performance. In this study, we synthesized GO-dominant GPM membrane with internal negatively-charged domains,
Gu, P   +7 more
core   +1 more source

Generation of specific antibodies against the rap1A, rap1B and rap2 small GTP-binding proteins. Analysis of rap and ras proteins in membranes from mammalian cells [PDF]

open access: yes, 1992
Specific antibodies against rap1A and rap1B small GTP-binding proteins were generated by immunization of rabbits with peptides derived from the C-terminus of the processed proteins.
Frank, R.   +5 more
core   +1 more source

Metal confined in metal‐organic framework‐based mixed matrix membranes for efficient butadiene recognition separation

open access: yesAggregate, 2023
The efficient separation of butadiene (1,3‐C4H6) from C4 hydrocarbons is a critical step in petrochemical processes. However, the traditional cryogenic distillation suffers from energy‐intensity and serious environmental stress, necessitating the ...
Xixi Cen   +4 more
doaj   +1 more source

Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties

open access: yesMolecules, 2023
Demulsifiers are considered the key materials for oil/water separation. Various works in recent years have shown that demulsifiers with polyoxypropylen epolyoxyethylene branched structures possess better demulsification effects. In this work, inspired by
Mengmeng Zhang   +8 more
doaj   +1 more source

Mesoporous SiC-Based Photocatalytic Membranes and Coatings for Water Treatment

open access: yesMembranes, 2023
Photocatalytically active silicon carbide (SiC)-based mesoporous layers (pore sizes between 5 and 30 nm) were synthesized from preceramic polymers (polymer-derived ceramic route) on the surface and inside the pores of conventional macroporous α-alumina ...
Karla Begonia Cervantes-Diaz   +4 more
doaj   +1 more source

Insights on the Electrocatalytic Seawater Splitting at Heterogeneous Nickel-Cobalt Based Electrocatalysts Engineered from Oxidative Aniline Polymerization and Calcination

open access: yesMolecules, 2021
Given the limited access to freshwater compared to seawater, a growing interest surrounds the direct seawater electrolysis to produce hydrogen. However, we currently lack efficient electrocatalysts to selectively perform the oxygen evolution reaction ...
Perla Hajjar   +6 more
doaj   +1 more source

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