Results 91 to 100 of about 240,998 (304)

Improving gas sensing properties of graphene by introducing dopants and defects: a first-principles study

open access: yes, 2009
The interactions between four different graphenes (including pristine, B- or N-doped and defective graphenes) and small gas molecules (CO, NO, NO2 and NH3) were investigated by using density functional computations to exploit their potential applications
Chen, Y.B.   +6 more
core   +1 more source

Structured adsorbents in gas separation processes

open access: yesSeparation and Purification Technology, 2010
In this review, novel structured adsorbents for gas separation processes are discussed. General requirements are elucidated and illustrated with respect to specific structures such as monoliths, foams, laminates, and fabric structures. Geometrical parameters of adsorbents which affect the system performance are identified and discussed.
Rezaei, Fateme, Webley, Paul
openaire   +3 more sources

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Dynamic gas supply mechanism and theoretical production modes of free gas-rich deep coal reservoirs

open access: yesMeitian dizhi yu kantan
Objective and Methods The production processes of adsorbed and free gases and the dynamic partitioning mechanism behind the production efficiency of both gas types are critical scientific issues to be addressed urgently in the exploration and production ...
Shida CHEN   +6 more
doaj   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

A length-dynamic Tonks gas theory of histone isotherms

open access: yes, 2002
We find exact solutions to a new one-dimensional (1D) interacting particle theory and apply the results to the adsorption and wrapping of polymers (such as DNA) around protein particles (such as histones).
Marko J. F.   +8 more
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Establishment and application of material balance equation for deep coalbed methane reservoirs based on coal formation stimulation background

open access: yesMeitan kexue jishu
In recent years, the deep coalbed methane was developed rapidly, with breakthroughs in daily production of tens of thousands of cubic meters per well in multiple deep coalbed methane blocks.
Juntai SHI   +11 more
doaj   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Fluid characteristics, gas accumulation controlling factors and gas enrichment modes in coal reservoirs: A case study of the Upper Paleozoic in the central-eastern Ordos Basin, NW China

open access: yesPetroleum Exploration and Development
Based on the test and experimental data from exploration well cores of the Upper Paleozoic in the central-eastern Ordos Basin, combined with structural, burial depth and fluid geochemistry analyses, this study reveals the fluid characteristics, gas ...
Shida CHEN   +9 more
doaj   +1 more source

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