Search results for: Y.S. Yang

Items from 1 to 20 out of 113 results

article

Characterization of heat treatment-induced pore structure changes in cold-sprayed titanium

Y.Q. Ren, P.C. King, Y.S. Yang, T.Q. Xiao, more

Materials Characterization > 2017 > 132 > C > 69-75

Two X-ray computed tomography (CT) datasets have been acquired for a cold-sprayed titanium sample before and after heat treatment. The datasets were collected with a beam energy of 30keV at the Australian Synchrotron. Three-dimensional (3D) distributions of porosity in the Ti sample were reconstructed using a data-constrained modelling (DCM) technique. Quantitative analysis indicated that the heat...

article

Biofilm formation and disinfectant resistance of Salmonella sp. in mono‐ and dual‐species with Pseudomonas aeruginosa

X.Y. Pang, Y.S. Yang, H.G. Yuk

Journal of Applied Microbiology > 123 > 3 > 651 - 660

Aims This study aimed to evaluate the biofilm formation and disinfectant resistance of Salmonella cells in mono‐ and dual‐species biofilms with Pseudomonas aeruginosa, and to investigate the role of extracellular polymeric substances (EPS) in the protection of biofilms against disinfection treatment. Methods and Results The populations of Salmonella in mono‐ or dual‐species biofilms with P. aeruginosa...

article

Anisotropic cyclic deformation behavior of extruded ZA81M magnesium alloy

C. Wang, T.J. Luo, J.X. Zhou, Y.S. Yang

International Journal of Fatigue > 2017 > 96 > C > 178-184

Anisotropic cyclic deformation behavior and fatigue life of extruded ZA81M magnesium alloy were investigated. The alloy showed a tilted basal texture towards extrusion direction, which resulted in the different cyclic deformation behavior along extrusion direction and transverse direction. The tilted basal texture made basal slip favorable along extrusion direction, thus leading to the decrease of...

article

Lab-based investigation of enhanced BTEX attenuation driven by groundwater table fluctuation

Y.S. Yang, Panpan Li, Xi Zhang, Mingjie Li, more

Chemosphere > 2017 > 169 > C > 678-684

Groundwater fluctuation is often overlooked and lack of study in the field contaminant hydrogeology. Hydraulic force from fluctuating groundwater tables leads to dissolution and subsequent enhanced advective transport of petroleum (e.g. BTEX) in contaminated subsurface system. A laboratory investigation of effect of the groundwater table fluctuation (GTF) on BTEX transport, taking toluene as a typical...

article

Clustering analysis for porous media: An application to a dolomitic limestone

F.F. Chen, Y.S. Yang, M. Pervukhina, B.M. Clennell, more

Journal of Petroleum Science and Engineering > 2016 > 146 > C > 770-776

A quantitative study of pore structure connection is presented based on the microscopic void volume distribution in a dolomitic limestone sample. The method combines a 3D clustering analysis algorithm with a critical porosity determination scheme to study percolation properties of connected pore spaces and obtain a theoretical estimation of effective porosity of the rock sample at the percolation...

article

Structure and Transport in Coatings from Multiscale Computed Tomography of Coatings—New Perspectives for Eelectrochemical Impedance Spectroscopy Modeling?

A.E. Hughes, A. Trinchi, F.F. Chen, YS. Yang, more

Electrochimica Acta > 2016 > 202 > C > 243-252

Computed Tomography (CT) is an approach that has been extensively applied in many areas of science from understanding structures in living organisms to materials science. In materials science, the study of structures within coatings presents challenges on at least two different levels. First, the structure of the coatings needs to be understood from the atomic scale, where dissolution reactions begin,...

article

Effects of Al2O3 on (1−x)[SrO–SiO2–B2O3]–xAl2O3 glass sealant for intermediate temperature solid oxide fuel cell

E.A. Kim, H.W. Choi, Y.S. Yang

Ceramics International > 2015 > 41 > 10(PB) > 14621- 14626

The effects of Al₂O₃ on (1−x)[SrO–SiO₂–B₂O₃]–xAl₂O₃ (SASB, x=0, 0.02, 0.04, 0.06, 0.08, and 0.1) sealing glasses for intermediate temperature solid oxide fuel cell (SOFC) have been investigated to determine the proper amount of Al₂O₃ for the application of the SASB glasses to a SOFC sealant. The structural, thermal, mechanical and adhesion properties were determined by using DTA, TMA, XRD, SEM, and...

article

Chemical–biological hybrid reactive zones and their impact on biodiversity of remediation of the nitrobenzene and aniline contaminated groundwater

Y.J. Wen, Y.S. Yang, H.J. Ren, X.Q. Du, more

Chemical Engineering Journal > 2015 > 280 > Complete > 233-240

The effectiveness and bio-implication of the chemical and biological hybrid reactive zones were investigated to treat contaminated water through two months simulation. The mechanism of the sequenced chemo-bio-hybrid reactive zones designed as a ZVI part for chemical treatment of nitrobenzene producing aniline and a biological membrane depredate organic pollutant using bioaugment in the bio-reactive...

article

STAT3 Mediates Autophagy and Extracellular Matrix Synthesis in Human Glomerular Mesangial Cells Exposed to High Glucose

Y.S. Yang, W.L.N. Wang, C.Y. Chen, G.X.R. Gao, more

Hong Kong Journal of Nephrology > 2015 > 17 > 2 Supplement > S17

article

Isothermal formation kinetics of nanocrystals in LiNb0.5Ta0.5O3 glass

C.G. Baek, H.W. Choi, Y.S. Yang

Journal of Alloys and Compounds > 2014 > 615 > C > 745-748

We report an isothermal formation kinetics of nanocrystals in LiNb_0.5Ta_0.5O₃ (LNT) glass prepared by the polymerized complex sol–gel process with no addition of glass former. It is observed that the LNT glass transforms into rhombohedral LNT crystal at an elevated temperature and most crystal grains are confined within the size of ∼30nm. We have determined that the formation mechanism of nanocrystals...

article

Production of gymnemic acid from hairy root cultures of Gymnema sylvestre R. Br. as influenced by polyunsaturated fatty acids (PUFAs) and their antioxidant activity

N. Praveen, M. Thiruvengadam, Y.S. Yang, S.H. Kim, more

Industrial Crops & Products > 2014 > 54 > Complete > 54-61

Elicitation is one of the few strategies that find commercial application in the improvement of secondary metabolite production from plants as well as cell and organ culture systems. Gymnema sylvestre is an important medicinal plant which bears bioactive compound namely gymnemic acid that finds application in the treatment of diabetes. The present study relates to different polyunsaturated fatty acids...

article

Biofilm formation of Salmonella Typhimurium on stainless steel and acrylic surfaces as affected by temperature and pH level

H.D.N. Nguyen, Y.S. Yang, H.G. Yuk

LWT - Food Science and Technology > 2014 > 55 > 1 > 383-388

The effect of temperature (28, 37 and 42 °C) and pH (6 and 7) on the biofilm formation capability of Salmonella Typhimurium on stainless steel and acrylic was investigated. The rate of biofilm formation increased with increasing temperature and pH, while the number of attached cells after 240 h decreased with increasing temperature and was not different between pH 6 and 7. The surface hydrophobicity...

article

Origin of the lathy ferrite in AISI 304 stainless steel during directional solidification

J.W. Fu, Y.S. Yang

Journal of Alloys and Compounds > 2013 > 580 > Complete > 191-194

The solidification path has been revealed and the mechanism of three-phase reaction in 18-8 austenitic stainless steel has been clarified using directional solidification and liquid quenching. It is found that primary delta-ferrite precipitates from the melt at the initial stage of solidification. With the decrease in the melt temperature, it is confirmed that austenite is formed through peritectic...

article

A data-constrained modelling approach to sandstone microstructure characterisation

Y.S. Yang, K.Y. Liu, S. Mayo, A. Tulloh, more

Journal of Petroleum Science and Engineering > 2013 > 105 > Complete > 76-83

This paper outlines the data-constrained microstructure modelling (DCM) approach to determine microscopic distributions of pores (voids), quartz and calcite in sandstone. The DCM model incorporates two computed-tomography (CT) data sets as constraints acquired at X-ray beam energies of 35keV and 45keV. The DCM predicted 3D microstructure is consistent with SEM observations that calcite exists in the...

article

Outcomes in children with biliary atresia following liver transplantation

L.Y. Sun, Y.S. Yang, Z.J. Zhu, W. Gao, more

Hepatobiliary & Pancreatic Diseases International > 2013 > 12 > 2 > 143-148

Background: Congenital biliary atresia is a rare condition characterized by idiopathic dysgenesis of the bile ducts. If untreated, congenital biliary atresia leads to liver cirrhosis, liver failure and premature death. The present study aimed to evaluate the outcomes of orthotopic liver transplantation in children with biliary atresia. Method: We retrospectively analyzed 45 patients with biliary atresia...

article

Data-constrained modelling of an anthracite coal physical structure with multi-spectrum synchrotron X-ray CT

H.P. Wang, Y.S. Yang, Y.D. Wang, J.L. Yang, more

Fuel > 2013 > 106 > Complete > 219-225

A data-constrained modelling (DCM) approach with multi-spectrum synchrotron X-ray CT has been used to characterise the physical structure of Yangquan coal sample. Three sets of X-ray CT data have been acquired with monochromatic beam energies at 14, 18, and 30keV respectively. A DCM approach is used to derive compositional volume fractions on each voxel, by minimising the differences between the expected...

article

Solidification behavior in three-phase region of AISI 304 stainless steel

J.W. Fu, Y.S. Yang

Materials Letters > 2013 > 93 > Complete > 18-20

Phase transformation details in the three-phase region of AISI 304 stainless steel were revealed by quenching. At the initial stage of solidification, microstructure consisting of thin lathy ferrite and austenite forms directly from the melt. When forming lathy ferrite in the two-phase microstructure, Cr concentration at the solid/liquid interface remains almost unchanged and large numbers of Ni solutes...

article

Hydrogeo-chemical impacts of air sparging remediation on a semi-confined aquifer: Evidences from field monitoring and modeling

W. Fan, Y.S. Yang, Y. Lu, X.Q. Du, more

Chemosphere > 2013 > 90 > 4 > 1419-1426

Air sparging (AS) was explored for remediation of a petroleum contaminated semi-confined groundwater system in NE China. Physical, hydro-chemical and hydraulic behaviors in subsurface environment during AS were investigated with support of modeling to understand the hydrogeo-chemical impacts of AS on the aquifer. The responses of groundwater, dissolved oxygen and temperature indicated that the radius...

article

Orientational dependence of lathy ferrite in Fe–Cr–Ni alloy during directional solidification

J.W. Fu, Y.S. Yang

Materials Letters > 2012 > 81 > Complete > 177-180

The morphology and crystallography of lathy ferrite in a Fe–Cr–Ni alloy during solidification were examined by transmission electron microscopy (TEM). The formation mechanism of the parallel lathy ferrite during solidification was proposed based on the crystallography relationship between ferrite and austenite. It was found that the morphology of the lathy ferrite was determined by the crystallography...

article

Using X-ray tomography, PALS and Raman spectroscopy for characterization of inhibitors in epoxy coatings

A.E. Hughes, S. Mayo, Y.S. Yang, T. Markley, more

Progress in Organic Coatings > 2012 > 74 > 4 > 726-733

Model paint materials were generated by adding a range of inorganic materials into an epoxy. The inorganic materials included inhibitors (Zn ₃ (PO ₄ ) ₂ and SrCrO ₄ ) and a filler (rutile TiO ₂ ).The SrCrO ₄ system was characterized using SEM, TEM, PALS and Raman spectroscopy and found to have an even distribution of inhibitor in the polymer matrix....

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INFONA - science communication portal

Search results for: Y.S. Yang

Characterization of heat treatment-induced pore structure changes in cold-sprayed titanium

Biofilm formation and disinfectant resistance of Salmonella sp. in mono‐ and dual‐species with Pseudomonas aeruginosa

Anisotropic cyclic deformation behavior of extruded ZA81M magnesium alloy

Lab-based investigation of enhanced BTEX attenuation driven by groundwater table fluctuation

Clustering analysis for porous media: An application to a dolomitic limestone

Structure and Transport in Coatings from Multiscale Computed Tomography of Coatings—New Perspectives for Eelectrochemical Impedance Spectroscopy Modeling?

Effects of Al2O3 on (1−x)[SrO–SiO2–B2O3]–xAl2O3 glass sealant for intermediate temperature solid oxide fuel cell

Chemical–biological hybrid reactive zones and their impact on biodiversity of remediation of the nitrobenzene and aniline contaminated groundwater

STAT3 Mediates Autophagy and Extracellular Matrix Synthesis in Human Glomerular Mesangial Cells Exposed to High Glucose

Isothermal formation kinetics of nanocrystals in LiNb0.5Ta0.5O3 glass

Production of gymnemic acid from hairy root cultures of Gymnema sylvestre R. Br. as influenced by polyunsaturated fatty acids (PUFAs) and their antioxidant activity

Biofilm formation of Salmonella Typhimurium on stainless steel and acrylic surfaces as affected by temperature and pH level

Origin of the lathy ferrite in AISI 304 stainless steel during directional solidification

A data-constrained modelling approach to sandstone microstructure characterisation

Outcomes in children with biliary atresia following liver transplantation

Data-constrained modelling of an anthracite coal physical structure with multi-spectrum synchrotron X-ray CT

Solidification behavior in three-phase region of AISI 304 stainless steel

Hydrogeo-chemical impacts of air sparging remediation on a semi-confined aquifer: Evidences from field monitoring and modeling

Orientational dependence of lathy ferrite in Fe–Cr–Ni alloy during directional solidification

Using X-ray tomography, PALS and Raman spectroscopy for characterization of inhibitors in epoxy coatings

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