Results 61 to 70 of about 56,761 (299)

A Study of the Conversion Kinetics of High-Viscosity Oil Components During Ultrasonic Treatment in the Presence of Zeolite

open access: yesFuels
In this work, the kinetics of the redistribution of oils, resins, and asphaltenes in high-viscosity oil from the Karazhanbas field (Republic of Kazakhstan) were investigated.
Darzhan Aitbekova   +7 more
doaj   +1 more source

Tar cracking and reforming in fluidized-bed biomass gasification conditions [PDF]

open access: yes, 2011
In this work realized by CIRAD, a specially designed crossed fixed-bed reactor was used to characterize thermal and catalytic tar reduction due to cracking and reforming reactions in fluidized-bed gasification conditions.
Commandre, Jean-Michel, Nitsch, Xavier
core  

Notes on Shifting Distribution Patterns and Survival of Immature \u3ci\u3eDanaus Plexippus\u3c/i\u3e (Lepidoptera: Danaidae) on the Food Plant \u3ci\u3eAsclepias Syriaca\u3c/i\u3e [PDF]

open access: yes, 2017
Abundance and distribution of immature stages of the monarch butterfly, Danaus plexippus, on the food plant Asclepias syriaca were examined at a site in southeastern Wisconsin over one growing season.
Borkin, Susan Sullivan
core   +2 more sources

DMS‐MaPseq and DREEM Analyses Implicate the Critical Role of RNA Structural Dynamics in Turnip Yellow Mosaic Virus Pathogenicity

open access: yesAdvanced Science, EarlyView.
RNA structural profiling of Turnip Yellow Mosaic Virus by DMS‐MaPseq and DREEM analyses uncover that viral genome‐wide RSS is highly complicated and heterogeneous, with alternative RSSs widely distributed across the genome. Notably, the viral 3’ tRNA‐like structure adopts alternative conformations in vivo.
Jiaying Zhu   +7 more
wiley   +1 more source

Extreme‐Thickness Meta‐Membrane for Controlling Terahertz Vectorial Beams

open access: yesAdvanced Science, EarlyView.
We propose ultra‐thin (λ/30) transmissive terahertz metasurfaces combining near‐field resonant and detour phases in coupled‐slit meta‐atoms, enabling continuous phase and polarization control beyond conventional designs. Based on leaky‐mode theory, scalar and vectorial terahertz Bessel beams at 0.39 THz are experimentally demonstrated, with ...
Yufei Song   +7 more
wiley   +1 more source

Influence of mechanical activation on the oil composition and on characteristics of its fraction boiling away above 500ºС

open access: yesТонкие химические технологии, 2010
The pressure effect in the disintegration unit DA-1 on the oil has been investigated. A change in oil composition and indicators characterizing some properties of the residual fraction of direct distillation has been identified.
S. V. Ivanov   +5 more
doaj  

Superficial and Deep Infections Rate in Primary Total Ankle Replacement through Anterior Approach versus Lateral Transfibular Approach

open access: yesFoot & Ankle Orthopaedics, 2017
Category: Ankle, Ankle Arthritis, Periprosthetic Infections Introduction/Purpose: Periprosthetic joint infections represent a relatively infrequent complication following total ankle replacement (TAR), with reported incidence ranging from 2% to 8,6 ...
Federico Giuseppe Usuelli MD   +4 more
doaj   +1 more source

The Bitter Taste of Brazil's Temporary Import Ban on Robusta Coffee

open access: yesAgribusiness, EarlyView.
ABSTRACT Brazil, a leading Robusta coffee producer and exporter, faced a significant drought in 2016–2017, which drastically reduced production and depleted stocks. Consequently, Brazil temporarily permitted the import of one million 60‐kg bags of Robusta coffee in the spring 2017. An import ban was imposed shortly afterward due to lobbying by domestic
Hanifi Otgun   +2 more
wiley   +1 more source

Quantification of Tars, Particulates, and Higher Heating Values in Gases Produced from a Biomass Gasifier

open access: yesBioResources, 2014
Syngas from biomass gasifiers contains impurities such as tars and particulates, which can create difficulties for the downstream processes (e.g., internal combustion engines and the Fischer-Tropsch process).
Christopher O. Akudo   +1 more
doaj   +1 more source

From biomass to electricity through integrated gasification/sofcs system: Green fuel cell [PDF]

open access: yes, 2005
The ongoing GREEN FUEL CELL project intends to develop an innovative sustainable technology with high "fuel to electricity" efficiency. The objective is to produce a gas suitable for SOFC application through reliable, upscalable and cost-effective staged
Broust, François   +4 more
core  

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