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Comparison of lipid classes and fatty acid compositions of farmed and wild pacific oysters, Crassostrea gigas, in Nha Trang, Vietnam
Abstract Lipid classes and fatty acid compositions of the farmed (F-C. gigas) and wild (W-C. gigas) pacific oysters, Crassostrea gigas, in Nha Trang, Vietnam were investigated for the first time. The results indicated that the lipid classes and fatty acid components of these oysters were insignificantly different. The total lipid of both studie...
5 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 509 | Lượt tải: 0
Supported liquid membrane with strip dispersion for recovering indium from etching solution of LCD industry: Influence of factors on performance
Abstract. Supported liquid membrane with strip dispersion (SLMSD) is a promising process for metal recovery from e-waste or waste streams because of many advantages such as the ability to combine extraction and stripping into one single step and thus have non-equilibrium mass transfer characteristics and maximum driving force. This paper investi...
6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 477 | Lượt tải: 0
Studies on the antioxidant activity of apigenin, luteolin and nevadensin using DFT
Abstract. The molecular properties of apigenin, luteolin and nevadensin which are three naturally flavonoid compounds have been studied theoretically by DFT method at 6- 311++G(d,p) level. All FMO analysis, mechanism, and kinetics studied suggested that compound luteolin (3) was a promising antioxidant agent. The results indicated that HAT is t...
11 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 603 | Lượt tải: 0
Effects of number of substituents and molecular weight of polyamines on the non-cyanide alkaline zinc plating process
Abstract. The effects of the number of substituents and molecular weight of polyamines in the non-cyanide alkaline plating bath on cathodic polarization, cyclic voltammogram, morphology, brightness and bright ranges of zinc electrodeposited coating were investigated. Cathode polarization measurements showed that the polyamines all increased cath...
9 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 523 | Lượt tải: 0
Vanillin conversion by aldol condensation using hydrotalcite Mg-Al and modified - Y zeolite as heterogeneous catalysts
Abstract. Mg-Al hydrotalcite, MgO-Al2O3 mixed oxides, and modified-Y zeolite (sulfated Y zeolite and copper ion-exchanged Y zeolite) were prepared and characterized by XRD, EDX, and XRF techniques. These materials were used as heterogeneous catalysts in aldol condensation of vanillin and acetone. The obtained results showed that the heterogeneou...
13 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 566 | Lượt tải: 0
Enhancement of specific absorption rate in MnFe2O4/Co0.7Zn0.3Fe2O4 AND MnFe2O4/Co0.5Zn0.5Fe2O4 composite nanoparticles
Abstract. We utilize an advantage of the exchange coupling between MnFe2O4 nanoparticles and Co0.7Zn0.3Fe2O4 or Co0.5Zn0.5Fe2O4 nanoparticles to enhance the specific absorption rate (SAR) in magnetic nanosystems for advanced magnetic hyperthermia therapy. All samples were synthesized by the hydrothermal method. We find that while the saturation ...
10 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 569 | Lượt tải: 0
Effect of cerium salt activated ceria on the UV degradation resistance of waterborne epoxy coatings
Abstract. Ce (III) salt-activated CeO2 nanoparticles were incorporated into waterborne epoxy coating to improve the UV stabilisation of epoxied system. The surface morphology of the coatings was examined by using color spectrophotometer during the UV exposure test. The degradation of the epoxy coatings was observed by the change of barrier prope...
10 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 530 | Lượt tải: 0
Modification of graphene oxide by curcumin and application in polyurethane coating
Abstract. Curcumin modified graphene oxide (GO-CR) was prepared using the adsorption method and polyurethane (PU) coating containing 0.3 wt% GO-CR was prepared on carbon steel. Synthesized GO-CR was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and zeta potential meas...
8 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 641 | Lượt tải: 0
Chemical composition and major volatile compounds of the hydrolyzed product from Kappaphycus alvarezii by-products using flavourzyme
Abstract The chemical composition of flavourzyme hydrolysis product from Kappaphycus alvarezii by-products was analyzed. The results showed that the protein hydrolysate powder had high content of proteins (21.66%) and low content of lipids (0.22%). Hydrolyzed products contained about 15 free amino acids with relatively high content of some amin...
8 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 572 | Lượt tải: 0
$Geo-chemical fractionations of arsenic and lead in the surface sediments of Thuy Trieu lagoon, Khanh Hoa province$ Geo-chemical fractionations of arsenic and lead in the surface sediments of Thuy Trieu lagoon, Khanh Hoa province
Abstract The sequential extraction method of Tessier et al. was applied to identify the phase associations of As and Pb in the surface sediment of Thuy Trieu lagoon. The results showed that these two metals were mainly found in the residual fractions. Meanwhile, the carbonate fractions stayed at the lowest portions. Levels of arsenic and lead a...
9 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 598 | Lượt tải: 0

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