Fine particle removal from gas stream using a helical-duct dust concentrator: Numerical study

In this study, separation efficiency and pressure drop of a helical-duct dust concentrator have been investigated numerically and experimentally. The mixture multiphase approach has been applied for CFD1 simulations of the process. The effects of various geometrical (helical-duct diameter and number of helix rounds) and operational parameters (inlet air mass flow rate, solid mass fraction and flow split ratio) on the solid-gas separation efficiency and pressure drop have been investigated by CFD simulations. It was found that by increasing the flow split ratio - as the main effective parameter on concentrator separation performance - the concentrator efficiency increased up to 75.8%. Finally, a new dimensionless correlation has been proposed to determine the pressure drop by using Euler and Reynolds dimensionless groups. The proposed correlation showed a fair agreement with the experimental results.Graphical abstract
Source: Chemical Engineering and Processing: Process Intensification - Category: Chemistry Source Type: research

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In this study, we genetically characterised Monogenea found on the gill of common carp in Iran. In total, 5603 parasites were recovered from 112 fish. The parasites were first identified morphologically as Dactylogyrus extensus, D. anchoratus, D. vastator, D. minutus, D. achmerowi and Gyrodactylus sprostonae. Representative samples were then subjected to sequencing. This is one of the first studies which has provided both morphological and sequence data for Dactylogyrus spp. and G. sprostonae. Our findings provide a foundation for future research into the genetic make-up of these economically significant parasites and the ...
Source: Parasitology International - Category: Parasitology Source Type: research
Publication date: Available online 22 August 2019Source: Advances in Virus ResearchAuthor(s): M. Alejandra Tortorici, David VeeslerAbstractCoronaviruses (CoVs) have caused outbreaks of deadly pneumonia in humans since the beginning of the 21st century. The severe acute respiratory syndrome coronavirus (SARS-CoV) emerged in 2002 and was responsible for an epidemic that spread to five continents with a fatality rate of 10% before being contained in 2003 (with additional cases reported in 2004). The Middle-East respiratory syndrome coronavirus (MERS-CoV) emerged in the Arabian Peninsula in 2012 and has caused recurrent outbre...
Source: Advances in Virus Research - Category: Virology Source Type: research
Publication date: Available online 23 August 2019Source: Zoologischer AnzeigerAuthor(s): Thalassa Matthews, Rachel Keeffe, David C. Blackburn
Source: A Journal of Comparative Zoology - Category: Zoology Source Type: research
Publication date: Available online 22 August 2019Source: Small Ruminant ResearchAuthor(s): Kalyan De, Shivendra Sharma, Pankaj Kumawat, Davendra Kumar, Palanisamy Thirumurugan, Artabandhu SahooAbstractIn the semi-arid tropical region, the winter is often associated with the cold wind. The physiology and production performance generally alter during winter in growing lambs. Therefore, the present study was initiated to assess the effect of wind protection during winter on growing lambs in a semi-arid tropical region. For this purpose, fourteen growing Malpura-cross lambs of 3-5 months of age with the body weight of 21.06&th...
Source: Small Ruminant Research - Category: Zoology Source Type: research
Publication date: Available online 22 August 2019Source: Veterinary MicrobiologyAuthor(s):
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
Publication date: August 2019Source: Research in Veterinary Science, Volume 125Author(s):
Source: Research in Veterinary Science - Category: Veterinary Research Source Type: research
The objective of the study was to (1) characterize and compare the chemical composition at the surface, subsurface and in the bulk of thin plastic films used for portosystemic shunt attenuation in their native state and after plasma exposure. (2) Assess the presence, concentration and location of irritant compounds (e.g dicetyl phosphate) within the films.Attenuated Total Reflectance Infrared Spectroscopy (ATR-IR), X-ray Photoelectron Spectroscopy (XPS) and dynamic Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) were used to analyze thirteen thin plastic films. Sample thickness was visualized and measured using S...
Source: Research in Veterinary Science - Category: Veterinary Research Source Type: research
The objective of this study was to analyze the biochemical composition of the biomass of a native strain of S. subsalsa cultivated in low-cost saline medium and harvested in the expone...
Source: African Journal of Microbiology Research - Category: Microbiology Source Type: research
Publication date: September 2019Source: Journal of Microbiological Methods, Volume 164Author(s): Charlotte A. Huber, Valentin Pflüger, Sarah Reed, Kyra Cottrell, Hanna E. Sidjabat, Ama Ranasinghe, Hosam M. Zowawi, Patrick Harris, David L. PatersonAbstractIn our current study we were identifying 26 bacterial isolates using a SCIEX 5800 TOF/TOF MALDI instrument and an external database. The results were compared with the results of a Vitek® MS system and in case of discrepancies at the species level 16s rRNA sequencing was performed for further verification.
Source: Journal of Microbiological Methods - Category: Microbiology Source Type: research
Publication date: Available online 22 August 2019Source: Journal of Microbiological MethodsAuthor(s): Rodney Sebastian Hart, Neil Paul Jolly, Bongani Kaiser NdimbaAbstractThe wine yeast Saccharomyces cerevisiae forms an integral part of wine production by converting relatively ‘neutral’ flavoured grape must into varietal aromatic wines. Additionally, non-Saccharomyces strains can be used with S. cerevisiae for the production of wines with more complexity. Yeast strains, to varying extents, produce and/or mediate the release of a whole range of key metabolites, which in turn contribute to enhanced aroma and fl...
Source: Journal of Microbiological Methods - Category: Microbiology Source Type: research
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