This article is going to discuss Chuang Tzu's thoughts on person enslaved by the outside or material w orld from three aspects: presenting this phenomenon,expounding its sources and exploring the solution to this ...This article is going to discuss Chuang Tzu's thoughts on person enslaved by the outside or material w orld from three aspects: presenting this phenomenon,expounding its sources and exploring the solution to this problem. Chuang Tzu pointed out the phenomenon of person's being enslaved by the outside or material world was a common state of his time, yet this great pow er and its influence was ignored by people. About the source of this giant power,Chuang Tzu thought that it was the sage's goodw ill and the Confucianist moral and emotions and know ledge in their work and life that caused the alienation of the human na-ture. Thus there are two ways against the alienation; one is realistic that abandons all wise men and rulers,back to the primitive society,the other is idealistic,w hich is to abandon all wis-dom,care about noting and do nothing.展开更多
Fossil fuel exhaustion and overdevelopment usually lead to a recession,which is worsened by the environmental pollution.So it is of high priority to develop high-efficiency energy storage device.Here,agreen and enviro...Fossil fuel exhaustion and overdevelopment usually lead to a recession,which is worsened by the environmental pollution.So it is of high priority to develop high-efficiency energy storage device.Here,agreen and environment-friendly strategy is devised to fabricate carbon materials from biomass.By water extraction and alcohol precipitation,polysaccharide is extracted from loquat leaves.After calcining under high temperature,hierarchical porous carbon materials(HPCM)are obtained,possessing a variety of macropores,mesopores and micropores.Such ample and hierarchical pores enable the electrolyte infiltration and the buffering of the volume expansion of sulfur in repeated electrochemical reactions.The structure stability of the entire electrode can thus be well maintained.When evaluated as the scaffold for sulfur,the electrochemical performance of carbon/sulfur composite was tested.Even after 500 cycles,the reversible capacity is retained as high as 485.4 mA·h/g at the current density of 1.6 A/g.It also offers a notable rate capability,attaining the discharge capacity of 700.7 mA·h/g at 2 C.All the electrochemical performance results prove the feasibility of the proposed strategy.展开更多
“材料分析与测试”是材料物理专业的专业必修课程,该课程的实用性强,理论知识抽象,涉及大量专业术语,知识点繁杂,学习难度大。思维导图(The Mind Map)是表达发散性思维的有效图形思维工具,简单且高效,是一种实用性的新型教学工具。在...“材料分析与测试”是材料物理专业的专业必修课程,该课程的实用性强,理论知识抽象,涉及大量专业术语,知识点繁杂,学习难度大。思维导图(The Mind Map)是表达发散性思维的有效图形思维工具,简单且高效,是一种实用性的新型教学工具。在“材料分析与测试”教学中应用思维导图,运用图文并重的技巧,帮助学生直观、清晰地理解该课程的相关概念以及知识结构,更好地掌握材料课程的知识体系,不仅能增添知识讲授的趣味性,还能锻炼学生的发散思维和归纳总结能力,促进学生对重要知识点的记忆。文章探讨了思维导图对“材料分析与测试”课程教学的促进作用,探索思维导图在本课程中的具体应用。展开更多
The serious problems caused by extensive usage of petroleum-based plastic materials led to investigating the comprehensive studies and developing active food packaging materials.Even if the chitosan-based films are co...The serious problems caused by extensive usage of petroleum-based plastic materials led to investigating the comprehensive studies and developing active food packaging materials.Even if the chitosan-based films are considered an attractive source,they exhibit some practical difficulties in developing active food packaging applications.Hence,Ficus carica Linn leaves extract(FLE),with the features of its cheapness,easy accessibility and superoxide anion radical scavenging activity,was incorporated into chitosan(CS)film at various concentrations(2%-6%w/w).To the best of our knowledge,this was the first time that FLE was utilized as a bioactive substance incorporated into chitosan films to develop eco-friendly,biodegradable,active food packaging material.The results obtained revealed that FLE incorporation into chitosan films significantly improved the swelling,water solubility and opacity of neat chitosan films.FTIR and morphological analysis indicated that the films produced exhibited smooth structure with homogenous dispersion of FLE.In mechanically,the addition of FLE resulted in a significant reduction in tensile strength while the elasticity of the films was improved.Additionally,the antioxidant and biodegradability properties of neat chitosan films were enhanced significantly.It was concluded that CS-FLE films appeared to be a capable and enhanced option for synthetic polymer-based food packaging materials.Based on the analyses performed,further studies are suggested on the packaging application for various foods and to evaluate the possible interaction of packaging film materials with the compounds of the food products,to avoid possible negative effects.展开更多
At the end of 2001 National Natural Science Foundation of China (NSFC) organized a laboratory evaluation for Creative Research Groups, a pilot program launched in 2000, in the northwestern area of China and the evalua...At the end of 2001 National Natural Science Foundation of China (NSFC) organized a laboratory evaluation for Creative Research Groups, a pilot program launched in 2000, in the northwestern area of China and the evaluating team was deeply impressed by a young group, around 30 of average age, with their work and achievements, with their effort in pursuit of scientific truth and with their teamwork spirits. They all acknowl-展开更多
文摘This article is going to discuss Chuang Tzu's thoughts on person enslaved by the outside or material w orld from three aspects: presenting this phenomenon,expounding its sources and exploring the solution to this problem. Chuang Tzu pointed out the phenomenon of person's being enslaved by the outside or material world was a common state of his time, yet this great pow er and its influence was ignored by people. About the source of this giant power,Chuang Tzu thought that it was the sage's goodw ill and the Confucianist moral and emotions and know ledge in their work and life that caused the alienation of the human na-ture. Thus there are two ways against the alienation; one is realistic that abandons all wise men and rulers,back to the primitive society,the other is idealistic,w hich is to abandon all wis-dom,care about noting and do nothing.
基金supported by the Fundamental Research Funds of Shandong University(No.2016JC033)the Taishan Scholar Project of Shandong Province (No. ts201511004)
文摘Fossil fuel exhaustion and overdevelopment usually lead to a recession,which is worsened by the environmental pollution.So it is of high priority to develop high-efficiency energy storage device.Here,agreen and environment-friendly strategy is devised to fabricate carbon materials from biomass.By water extraction and alcohol precipitation,polysaccharide is extracted from loquat leaves.After calcining under high temperature,hierarchical porous carbon materials(HPCM)are obtained,possessing a variety of macropores,mesopores and micropores.Such ample and hierarchical pores enable the electrolyte infiltration and the buffering of the volume expansion of sulfur in repeated electrochemical reactions.The structure stability of the entire electrode can thus be well maintained.When evaluated as the scaffold for sulfur,the electrochemical performance of carbon/sulfur composite was tested.Even after 500 cycles,the reversible capacity is retained as high as 485.4 mA·h/g at the current density of 1.6 A/g.It also offers a notable rate capability,attaining the discharge capacity of 700.7 mA·h/g at 2 C.All the electrochemical performance results prove the feasibility of the proposed strategy.
文摘“材料分析与测试”是材料物理专业的专业必修课程,该课程的实用性强,理论知识抽象,涉及大量专业术语,知识点繁杂,学习难度大。思维导图(The Mind Map)是表达发散性思维的有效图形思维工具,简单且高效,是一种实用性的新型教学工具。在“材料分析与测试”教学中应用思维导图,运用图文并重的技巧,帮助学生直观、清晰地理解该课程的相关概念以及知识结构,更好地掌握材料课程的知识体系,不仅能增添知识讲授的趣味性,还能锻炼学生的发散思维和归纳总结能力,促进学生对重要知识点的记忆。文章探讨了思维导图对“材料分析与测试”课程教学的促进作用,探索思维导图在本课程中的具体应用。
文摘The serious problems caused by extensive usage of petroleum-based plastic materials led to investigating the comprehensive studies and developing active food packaging materials.Even if the chitosan-based films are considered an attractive source,they exhibit some practical difficulties in developing active food packaging applications.Hence,Ficus carica Linn leaves extract(FLE),with the features of its cheapness,easy accessibility and superoxide anion radical scavenging activity,was incorporated into chitosan(CS)film at various concentrations(2%-6%w/w).To the best of our knowledge,this was the first time that FLE was utilized as a bioactive substance incorporated into chitosan films to develop eco-friendly,biodegradable,active food packaging material.The results obtained revealed that FLE incorporation into chitosan films significantly improved the swelling,water solubility and opacity of neat chitosan films.FTIR and morphological analysis indicated that the films produced exhibited smooth structure with homogenous dispersion of FLE.In mechanically,the addition of FLE resulted in a significant reduction in tensile strength while the elasticity of the films was improved.Additionally,the antioxidant and biodegradability properties of neat chitosan films were enhanced significantly.It was concluded that CS-FLE films appeared to be a capable and enhanced option for synthetic polymer-based food packaging materials.Based on the analyses performed,further studies are suggested on the packaging application for various foods and to evaluate the possible interaction of packaging film materials with the compounds of the food products,to avoid possible negative effects.
文摘At the end of 2001 National Natural Science Foundation of China (NSFC) organized a laboratory evaluation for Creative Research Groups, a pilot program launched in 2000, in the northwestern area of China and the evaluating team was deeply impressed by a young group, around 30 of average age, with their work and achievements, with their effort in pursuit of scientific truth and with their teamwork spirits. They all acknowl-
