Based on the basic operating principal and the technology characteristic of electron beam physical vapor deposition(EBPVD) technique, EBPVD was used to prepare the micro-layer composites. The effect on the substrate p...Based on the basic operating principal and the technology characteristic of electron beam physical vapor deposition(EBPVD) technique, EBPVD was used to prepare the micro-layer composites. The effect on the substrate preheating temperature was taken into accounts and the finite element analysis package ANSYS was used to simulate the internal stress field and the potential displacement changing tendency. The results show that one of the most important quality factors on the judgment of micro-layer composites is the adhesion between the substrate and the deposition layers as well as among the different deposition layers. Besides the existance of temperature gradient through the thickness of layers, the main reason for the internal stress in micro-layer composites is the mismatch of various properties of the layer and the substrate of different thermal expansions and crystal lattice types. With the increase of substrate preheating temperature, the inter-laminar shear stress also takes on a tendency of increase but the axial residual stress decrease.展开更多
The aim of this study was to obtain a protein isolate from Argentine anchovy （Engraulis anchoita） residue produced using the pH shifting process, with acid and alkaline solubilization and isoelectric precipitation o...The aim of this study was to obtain a protein isolate from Argentine anchovy （Engraulis anchoita） residue produced using the pH shifting process, with acid and alkaline solubilization and isoelectric precipitation of the protein, and evaluate their functional properties. The lowest solubility was obtained at pH 5 where 8.32% and 2.96% were found for acid and alkali respectively. The highest solubility was obtained at extreme pH. The maximum water holding capacity was presented by the alkaline protein isolate at pH 11 （9.63 g H20/g protein）. The oil holding capacity was 4.20 mL/g protein, 7.26 mL/g of protein for the acid and alkaline protein isolates, respectively. The strain showed higher oil holding capacity in alkaline pH, lower solubility in pH near the protein isoelectric point and a lower capacity to retain water in extreme pH when compared with the acid isolate.展开更多
基金Project(50304007) supported by the National Natural Science Foundation of China
文摘Based on the basic operating principal and the technology characteristic of electron beam physical vapor deposition(EBPVD) technique, EBPVD was used to prepare the micro-layer composites. The effect on the substrate preheating temperature was taken into accounts and the finite element analysis package ANSYS was used to simulate the internal stress field and the potential displacement changing tendency. The results show that one of the most important quality factors on the judgment of micro-layer composites is the adhesion between the substrate and the deposition layers as well as among the different deposition layers. Besides the existance of temperature gradient through the thickness of layers, the main reason for the internal stress in micro-layer composites is the mismatch of various properties of the layer and the substrate of different thermal expansions and crystal lattice types. With the increase of substrate preheating temperature, the inter-laminar shear stress also takes on a tendency of increase but the axial residual stress decrease.
文摘The aim of this study was to obtain a protein isolate from Argentine anchovy （Engraulis anchoita） residue produced using the pH shifting process, with acid and alkaline solubilization and isoelectric precipitation of the protein, and evaluate their functional properties. The lowest solubility was obtained at pH 5 where 8.32% and 2.96% were found for acid and alkali respectively. The highest solubility was obtained at extreme pH. The maximum water holding capacity was presented by the alkaline protein isolate at pH 11 （9.63 g H20/g protein）. The oil holding capacity was 4.20 mL/g protein, 7.26 mL/g of protein for the acid and alkaline protein isolates, respectively. The strain showed higher oil holding capacity in alkaline pH, lower solubility in pH near the protein isoelectric point and a lower capacity to retain water in extreme pH when compared with the acid isolate.
