Ni-La2O3/CeO2 composite films were prepared by electrodeposition from a nickel sulfate bath containing certain content of micrometer and nanometer La2O3/CeO2 particles. The effect of La2O3 or CeO2 particle size on the...Ni-La2O3/CeO2 composite films were prepared by electrodeposition from a nickel sulfate bath containing certain content of micrometer and nanometer La2O3/CeO2 particles. The effect of La2O3 or CeO2 particle size on the oxidation resistance of the electrodeposited Ni-La2O3/CeO2 composites in air at 1000 °C was studied. The results indicate that, compared with the electrodeposited Ni-film, Ni-La2O3/CeO2 composites exhibit a superior oxidation resistance due to the codeposited La2O3 or CeO2 particles blocking the outward diffusion of nickel. Moreover, compared with nanoparticles, La2O3 or CeO2 microparticles have stronger effect because La2O3 or CeO2 microparticles also act as a diffusion barrier layer at the onset of oxidation.展开更多
Calcium is an essential ion in both marine and terrestrial organisms, where it plays a crucial role in processes ranging from the formation and maintenance of the skeleton to the regulation of neuronal function. The C...Calcium is an essential ion in both marine and terrestrial organisms, where it plays a crucial role in processes ranging from the formation and maintenance of the skeleton to the regulation of neuronal function. The Ca^2＋ balance is maintained by three organ systems, including the gastrointestinal tract, bone and kidney. Since first being cloned in 1993 the Ca^2＋-sensing receptor has been expressed along the entire gastrointestinal tract, until now the exact function is only partly elucidated. As of this date it still remains to be determined if the Ca^2＋-sensing receptor is involved in calcium handling by the gastrointestinal tract. However, there are few studies showing physiological effects of the Ca^2＋-sensing receptor on gastric acid secretion and fluid transport in the colon. In addition, polyamines and amino acids have been shown to activate the Ca^2＋-sensing receptor and also act as allosteric modifiers to signal nutrient availability to intestinal epithelial cells. Activation of the colonic Ca^2＋-sensing receptor can abrogate cyclic nucleotide-mediated fluid secretion suggesting a role of the receptor in modifying secretory diarrheas like cholera. For many cell types changes in extracellular Ca^2＋ concentration can switch the cellular behavior from proliferation to terminal differentiation or quiescence. As cancer remains predominantly a disease of disordered balance between proliferation, termination and apoptosis, disruption in the function of the Ca^2＋-sensing receptor may contribute to the progression of neoplastic disease. Loss of the growth suppressing effects of elevated extracellular Ca^2＋ have been demonstrated in colon carcinoma, and have been correlated with changes in the level of CaSR expression.展开更多
This paper mainly discusses the Si/Al molar ratio, RO/R2O molar ratio, Fe content, glazing and firing system on the thickness of Longquan Celadon pink coloring effects, and using a colorimeter, field emission scanning...This paper mainly discusses the Si/Al molar ratio, RO/R2O molar ratio, Fe content, glazing and firing system on the thickness of Longquan Celadon pink coloring effects, and using a colorimeter, field emission scanning electron microscopy were used to analyze better experimental sample microstructure and color and so on. We explored the Longquan Celadon of pink coloration mechanism.展开更多
Nutrition is an important factor for the growth and development of plants. Among the main nutritional elements, there are nitrogen （N） and calcium （Ca）. The N comes from two forms of inorganic ions, ammonium （NH...Nutrition is an important factor for the growth and development of plants. Among the main nutritional elements, there are nitrogen （N） and calcium （Ca）. The N comes from two forms of inorganic ions, ammonium （NH4＋） and nitrate （NO3） whose functions in the plant are the increase in leaf area and improving the succulence of many crops, among other essential physiological processes. Both the deficit and excess NO3- have a negative impact on plants increasing susceptibility to insect pests and pathogens, while Ca as divalent ion absorbed Ca2＋ plays an important role in control of physiological disorders and the resistance of plants to diseases to increase the mechanical strength. The N and Ca have a close relationship in the nutritional role of the plant, because the Ca absorption acting nitrates, so that a proper balance affects plants better growth and higher strength.展开更多
This paper mainly discusses the Si/A1 molar ratio, RO/R20 molar ratio, Fe content, glazing and firing system on the thickness of Longquan Celadon pink coloring effects, and using a colorimeter, field emission scanning...This paper mainly discusses the Si/A1 molar ratio, RO/R20 molar ratio, Fe content, glazing and firing system on the thickness of Longquan Celadon pink coloring effects, and using a colorimeter, field emission scanning electron microscopy were used to analyze better experimental sample microstructure and color and so on. We explored the Longquan Celadon of pink coloration mechanism.展开更多
At present, whether internally or abroad, whether in the theory or business, there is a lack of a unified understanding about the basic concepts of structural system and theoretical category of enterprise business mod...At present, whether internally or abroad, whether in the theory or business, there is a lack of a unified understanding about the basic concepts of structural system and theoretical category of enterprise business model, and its theoretical analysis framework has not been built up, it is the exploratory phase of the model research in the mass. This study aims to analyze the formation mechanism, action mechanism, and evolution mechanism about the business model from the perspective of structure, and designs the enterprise business model architecture and forms a system, besides, explores approaches and strategies about enterprise carrying out business model innovation, and does beneficial bedding in order to use and improve the theoretical system in the process of the enterprise management practice. The significance of this study is to provide analytical methods and tools for the business model questions in the enterprise management practice. This paper firstly defined the connotation of enterprise business model and summarized the seven characteristics of the corporate business model. On the basis of outlining the enterprise business model design theory, the structural design of the corporate business model is mainly discussed. This paper designed the structure of the business model on modular perspective, proposed four constituent units and nine elements of enterprise business model structure system. Through the design of the enterprise business model structure and analysis of the elements that constitute structure, provide the basis for the transformation of innovative enterprise business model, or both enterprise business models, avoid the lack of elements of the enterprise business model structure and lead to business failure. Finally, the paper concludes with the five core strategies for the implementation of the enterprise business model design.展开更多
基金Project(GC13A113)supported by the Technology Research and Development Program of Heilongjiang Provincial Science and Technology DepartmentProject(12511469)supported by Heilongjiang Provincial Science and Technology Department
文摘Ni-La2O3/CeO2 composite films were prepared by electrodeposition from a nickel sulfate bath containing certain content of micrometer and nanometer La2O3/CeO2 particles. The effect of La2O3 or CeO2 particle size on the oxidation resistance of the electrodeposited Ni-La2O3/CeO2 composites in air at 1000 °C was studied. The results indicate that, compared with the electrodeposited Ni-film, Ni-La2O3/CeO2 composites exhibit a superior oxidation resistance due to the codeposited La2O3 or CeO2 particles blocking the outward diffusion of nickel. Moreover, compared with nanoparticles, La2O3 or CeO2 microparticles have stronger effect because La2O3 or CeO2 microparticles also act as a diffusion barrier layer at the onset of oxidation.
文摘Calcium is an essential ion in both marine and terrestrial organisms, where it plays a crucial role in processes ranging from the formation and maintenance of the skeleton to the regulation of neuronal function. The Ca^2＋ balance is maintained by three organ systems, including the gastrointestinal tract, bone and kidney. Since first being cloned in 1993 the Ca^2＋-sensing receptor has been expressed along the entire gastrointestinal tract, until now the exact function is only partly elucidated. As of this date it still remains to be determined if the Ca^2＋-sensing receptor is involved in calcium handling by the gastrointestinal tract. However, there are few studies showing physiological effects of the Ca^2＋-sensing receptor on gastric acid secretion and fluid transport in the colon. In addition, polyamines and amino acids have been shown to activate the Ca^2＋-sensing receptor and also act as allosteric modifiers to signal nutrient availability to intestinal epithelial cells. Activation of the colonic Ca^2＋-sensing receptor can abrogate cyclic nucleotide-mediated fluid secretion suggesting a role of the receptor in modifying secretory diarrheas like cholera. For many cell types changes in extracellular Ca^2＋ concentration can switch the cellular behavior from proliferation to terminal differentiation or quiescence. As cancer remains predominantly a disease of disordered balance between proliferation, termination and apoptosis, disruption in the function of the Ca^2＋-sensing receptor may contribute to the progression of neoplastic disease. Loss of the growth suppressing effects of elevated extracellular Ca^2＋ have been demonstrated in colon carcinoma, and have been correlated with changes in the level of CaSR expression.
文摘This paper mainly discusses the Si/Al molar ratio, RO/R2O molar ratio, Fe content, glazing and firing system on the thickness of Longquan Celadon pink coloring effects, and using a colorimeter, field emission scanning electron microscopy were used to analyze better experimental sample microstructure and color and so on. We explored the Longquan Celadon of pink coloration mechanism.
文摘Nutrition is an important factor for the growth and development of plants. Among the main nutritional elements, there are nitrogen （N） and calcium （Ca）. The N comes from two forms of inorganic ions, ammonium （NH4＋） and nitrate （NO3） whose functions in the plant are the increase in leaf area and improving the succulence of many crops, among other essential physiological processes. Both the deficit and excess NO3- have a negative impact on plants increasing susceptibility to insect pests and pathogens, while Ca as divalent ion absorbed Ca2＋ plays an important role in control of physiological disorders and the resistance of plants to diseases to increase the mechanical strength. The N and Ca have a close relationship in the nutritional role of the plant, because the Ca absorption acting nitrates, so that a proper balance affects plants better growth and higher strength.
文摘This paper mainly discusses the Si/A1 molar ratio, RO/R20 molar ratio, Fe content, glazing and firing system on the thickness of Longquan Celadon pink coloring effects, and using a colorimeter, field emission scanning electron microscopy were used to analyze better experimental sample microstructure and color and so on. We explored the Longquan Celadon of pink coloration mechanism.
基金The paper is sponsored by the item of“RIS Monitoring and Prediction Study for Complex Tectonic Region”(2006SG01)financed by Science and Technique Department of Yunnan Province P.R.C
文摘At present, whether internally or abroad, whether in the theory or business, there is a lack of a unified understanding about the basic concepts of structural system and theoretical category of enterprise business model, and its theoretical analysis framework has not been built up, it is the exploratory phase of the model research in the mass. This study aims to analyze the formation mechanism, action mechanism, and evolution mechanism about the business model from the perspective of structure, and designs the enterprise business model architecture and forms a system, besides, explores approaches and strategies about enterprise carrying out business model innovation, and does beneficial bedding in order to use and improve the theoretical system in the process of the enterprise management practice. The significance of this study is to provide analytical methods and tools for the business model questions in the enterprise management practice. This paper firstly defined the connotation of enterprise business model and summarized the seven characteristics of the corporate business model. On the basis of outlining the enterprise business model design theory, the structural design of the corporate business model is mainly discussed. This paper designed the structure of the business model on modular perspective, proposed four constituent units and nine elements of enterprise business model structure system. Through the design of the enterprise business model structure and analysis of the elements that constitute structure, provide the basis for the transformation of innovative enterprise business model, or both enterprise business models, avoid the lack of elements of the enterprise business model structure and lead to business failure. Finally, the paper concludes with the five core strategies for the implementation of the enterprise business model design.
