Abstract—Iris analysis studies the relationship between human health and changes in the anatomy of the iris. Apart from the fact that iris recognition focuses on modeling the overall structure of theiris,irisdiagnosisemphasizesthedetectingandanalyzingoflocal variations in the characteristics of irises. This paper focuses on studyingthegeometricalstructurechangesinirisesthatarecaused by gastro…
BACKGROUND: Over the past 10 years, food safety incidents have occurred frequently in China. Food safety issues in the dairy sector have increasingly gained the attention of the Chinese government and the public. The objective of this research is to explore consumption changes of dairy products of different income groups after these dairy safety incidents. RESULTS: The research indicates what …
A challenge associated with traditional mixture regression models (MRMs), which rest on the assumption of normally distributed errors, is determining the number of unobserved groups. Specifically, even slight deviations from normality can lead to the detection of spurious classes. The current work aims to (a) examine how sensitive the commonly used model selection indices are in class enumerat…
Background and Aims Evolutionary transitions from heterostyly to dioecy have been proposed in several angiosperm families, particularly in Rubiaceae. These transitions involve the spread of male and female sterility mutations resulting in modifications to the gender of ancestral hermaphrodites. Despite sustained interest in the gender strategies of plants, the structural and developmental base…
a b s t r a c t A novel doped activated carbon has been prepared from H2SO4-doped polyaniline which is prepared by the oxypolymerization of aniline. The morphology, surface chemical composition and surface area of the carbon have been investigated by scanning electron microscope, X-ray photoelectron spectroscopy and Brunaner–Emmett–Teller measurement, respectively. Electrochemical prope…
a b s t r a c t Active carbon–ceramic sphere as support of ruthenium catalysts were evaluated through the catalytic wet air oxidation (CWAO) of resin effluent in a packed-bed reactor. Active carbon–ceramic sphere and ruthenium catalysts were characterized by N2 adsorption and chemisorption measurements. BET surface area and total pore volume of active carbon (AC) in the active carbon–…
Abstract. Silica supported Sb–V mixed oxide catalysts (VSbOx/SiO2) were prepared and evaluated in methanol selective oxidation. One-pass yield of formaldehyde at 91% was obtained on one VSbOx/SiO2 catalyst. The active phase of VSbOx/SiO2 catalysts is found to be Sb–V mixed oxide, in which isolated VOx species can be stabilized. The relative amount of monomeric VOx species in VSbOx/SiO2 …
Abstract. H1−xLaNb2−xMoxO7 was prepared by solid-state reaction followed by an ion-exchange reaction. Pt was incorporated in the interlayer of H1−xLaNb2−xMoxO7 by the stepwise intercalation reaction. The H1−xLaNb2−xMoxO7 showed hydrogen production activity and the activities were greatly enhanced by Pt co-incorporating. The x value in H1−xLaNb2−xMoxO7 had an important effect…
Abstract. In this research, the adsorption equilibria of trichloroethylene (TCE) and benzene vapors onto hypercrosslinked polymeric resin (NDA201) were investigated by the column adsorption method in the temperature range from 303 to 333K and pressures up to 8 kPa for TCE, 12 kPa for benzene. The Toth and Dubinin–Astakov (D–A) equations were tested to correlate experimental isotherms, an…
Abstract. Water-soluble and carboxyl-functionalized up-converting rare-earth nanoparticles (UCNPs) are obtained via an efficient surface–ligand-exchange procedure. Hexanedioic acid molecules are employed to replace the original hydrophobic ligands in diethylene glycol solvent at high temperature. Various characterizations indicate the ligand-exchange process has negligible adverse effect …
Abstract. The CrNx (0 < x = N/Cr < 1) coatings on Mg alloy were prepared by DC reactive planar magnetron sputtering at a mixed atmosphere containing Ar and N2. The effects of N2 content and thickness on the CrNx coatings were characterized by the X-ray photoelectron spectrometry (XPS), X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM). The experimental results …
Abstract. The objective of this work is to study some post-treatment effects, including hydrothermal treatment, calcination and La2O3 modification, on the catalytic performance of a nanoscale HZSM-5 zeolite for ethylation of coking benzene. The nanoscale HZSM-5 zeolite was treated by hydrothermal treatment, calcination and La2O3 modification in series, and the prepared catalysts were evalua…
Abstract As the most frequent defect in composite structures during fabricated by autoclave process, delamination has evidently influence on compressive behavior of delaminated composite panels. For structure design purposes, delamination area is of great importance parameter to be considered. Based on considerable delamination information from nondestructive identification for composite comp…
ABSTRACT Bisimidazolium ionic liquids [C10(m2im)2(NTf2)2, C10(m2im)2(PF6)2, and C10(m2im)2(BF4)2] with different anions were evaluated as the antiwear additives in poly(ethylene glycol) at room temperature. Results showed that they could effectively reduce the friction and wear of sliding pairs compared with the cases without these additives. Especially, C10(m2im)2(NTf2)2 showed better antiwe…