The Catcher in the Rye can be listed on the top of the world classic literature and won laurels of literary virtuoso for Salinger.In this article the author reexamines this novel from the perspective of eco-criticism ...The Catcher in the Rye can be listed on the top of the world classic literature and won laurels of literary virtuoso for Salinger.In this article the author reexamines this novel from the perspective of eco-criticism and explores into the spiritual ecology reflected in it.展开更多
Concerned with the Critical Ecological Situation in China, according to the concept of the critical Environment and Endangerment, a set of indicators of Ecological Critical Situation has been set up. And with the powe...Concerned with the Critical Ecological Situation in China, according to the concept of the critical Environment and Endangerment, a set of indicators of Ecological Critical Situation has been set up. And with the powerful systematic analytical tool, GIS, a map of it in China by county unit has been worked out.展开更多
As one of major textbooks wildly used in China among secondary school students and high schools, Go For It series published by People's Education Press have obtained and still maintained unshakeable since last cen...As one of major textbooks wildly used in China among secondary school students and high schools, Go For It series published by People's Education Press have obtained and still maintained unshakeable since last century. This study aims at exploring and investigating English texts by People's Education Press trying to find out the conduct of environmental education through English Learning to uncover how language choices in English textbooks are invested with ideological implications based on Discourse-Historical Approach(DHA).展开更多
Based on the brief introduction of western contemporary eco-philosophies and Lao Zi’s eco-philosophy,there will be an analysis of the differences according to historical context and critical target and their converge...Based on the brief introduction of western contemporary eco-philosophies and Lao Zi’s eco-philosophy,there will be an analysis of the differences according to historical context and critical target and their convergence.The analysis leads to the conclusion that eco-philosophies,whether contemporary or ancient,are against any form of domination and centrism.展开更多
This thesis is aimed at conducting a comparative study of the ecoethic thoughts in Silent Spring and Wolf Totem. It points out that Carson and Jiang's eco-ethics are relatively complete, ideal and objective. Moreo...This thesis is aimed at conducting a comparative study of the ecoethic thoughts in Silent Spring and Wolf Totem. It points out that Carson and Jiang's eco-ethics are relatively complete, ideal and objective. Moreover, the most shining features are that they not only unfold the grim fact of ecological crisis before the public, but also instil confidence and hope in each and every reader.展开更多
Critical concentrations of α-(1→3)-D-glucan L-FV-Ⅱ from Lentinus edodes were studied by viscometry andfluorescence probe techniques. The dependence of the reduced viscosity on concentration of the glucan in 0.5 mol...Critical concentrations of α-(1→3)-D-glucan L-FV-Ⅱ from Lentinus edodes were studied by viscometry andfluorescence probe techniques. The dependence of the reduced viscosity on concentration of the glucan in 0.5 mol/L NaOHaqueous solutions with or without urea showed two turning points corresponding to the dynamic contact concentration c_s andthe overlap concentration c~* of the polymer. The values of c_s and c~* were found to be 1×10^(-3) g cm^(-3) and 1.1×10^(-2) g cm^(-3),respectively, for L-FV-Ⅱ in 0.5 mol/L NaOH aqueous solutions. The two critical concentrations of L-FV-Ⅱ in 0.5 mol/LNaOH aqueous solutions were also found to be 1.2×10^(-3) g cm^(-3) fbr c_s and 9.2×10^(-3) g cm^(-3) for c~* from the concentrationdependence of phenanthrene fluorescence intensities. The overlap concentration c~* of L-FV-Ⅱ in 0.5 mol/L NaOH aqueoussolutions was lower than that of polystyrene with same molecular weight in benzene, owing to the fact that polysaccharidetends to undergo aggregation caused by intermolecular hydrogen bonding. A normal viscosity behavior of L-FV-Ⅱ in 0.5 mol/L urea/0.5 mol/L NaOH aqueous solutions can still be observed in an extremely low concentration range at 25℃.展开更多
Aphids are major insect pests in agriculture and forestry worldwide.Following attacks by natural enemies,many aphids release an alarm pheromone to protect their population.In most aphids,the main component of the aphi...Aphids are major insect pests in agriculture and forestry worldwide.Following attacks by natural enemies,many aphids release an alarm pheromone to protect their population.In most aphids,the main component of the aphid alarm pheromone(AAP)is the sesquiterpene hydrocarbon(E)-β-farnesene(EβF).However,the mechanisms behind its biosynthesis and regulation remain poorly understood.In this study,we used the bird cherry–oat aphid Rhopalosiphum padi,which is an important wheat aphid,to investigate the regulatory mechanisms of EβF biosynthesis.Our results showed that EβF biosynthesis occurs during the mature embryo period and the molting period of the 1st-and 2nd-instar nymphs.Triglycerides provide the prerequisite material for EβF production and release.Based on transcriptome sequencing,RNAi analysis,hormone treatments,and quantitative measurements,we found that the biosynthesis of EβF utilizes acetyl coenzyme A produced from fatty acid degradation,which can be suppressed by juvenile hormone but it is promoted by 20-hydroxyecdysone through the modulation of fatty acid metabolism.This is the first systemic study on the modulation of EβF production in aphids.The results of our study provide insights into the molecular regulatory mechanisms of AAP biosynthesis,as well as valuable information for designing potential aphid control strategies.展开更多
Wordsworth devoted himself to the ideal of a harmonious relation between human and nature, between man and society, between man and the ego. In this sense, Wordsworth improved the development of ecology. This argument...Wordsworth devoted himself to the ideal of a harmonious relation between human and nature, between man and society, between man and the ego. In this sense, Wordsworth improved the development of ecology. This argument will be supported by the approach of eco-criticism and Heidegger's eco-philosophy. And it is supported by the following points.The first part points out that Wordsworth's love of nature led to his love of man, which was reflected by his care for common people. Part Two shows Wordsworth's solicitude for dwelling. His notion of dwelling had aspect of poetic dwelling. The harmonious human-nature relationship reveals thee essence of free dwelling. His poetic experiment agreed with Heidegger's argument on poetic creation. His discussion of free labour was like Heidegger's interpretation of"merit". Part Three tells about Wordsworth's great effort to amend the alienated human nature by treasuring the Child's nature, imagination and human feelings.In this way,the conclusion can be got: although it would be a huge project to reinterpret Wordsworth with the approaches of eco-criticism and Heidegger's eco-philosophy, it is still worth making the effort.展开更多
文摘The Catcher in the Rye can be listed on the top of the world classic literature and won laurels of literary virtuoso for Salinger.In this article the author reexamines this novel from the perspective of eco-criticism and explores into the spiritual ecology reflected in it.
基金Under the auspices of the National Natural Science Foundation of China (No.49671034)
文摘Concerned with the Critical Ecological Situation in China, according to the concept of the critical Environment and Endangerment, a set of indicators of Ecological Critical Situation has been set up. And with the powerful systematic analytical tool, GIS, a map of it in China by county unit has been worked out.
文摘As one of major textbooks wildly used in China among secondary school students and high schools, Go For It series published by People's Education Press have obtained and still maintained unshakeable since last century. This study aims at exploring and investigating English texts by People's Education Press trying to find out the conduct of environmental education through English Learning to uncover how language choices in English textbooks are invested with ideological implications based on Discourse-Historical Approach(DHA).
文摘Based on the brief introduction of western contemporary eco-philosophies and Lao Zi’s eco-philosophy,there will be an analysis of the differences according to historical context and critical target and their convergence.The analysis leads to the conclusion that eco-philosophies,whether contemporary or ancient,are against any form of domination and centrism.
文摘This thesis is aimed at conducting a comparative study of the ecoethic thoughts in Silent Spring and Wolf Totem. It points out that Carson and Jiang's eco-ethics are relatively complete, ideal and objective. Moreover, the most shining features are that they not only unfold the grim fact of ecological crisis before the public, but also instil confidence and hope in each and every reader.
基金This work was supported by the National Natural Science Foundation of China (No. 29374170) and the Research Grant Council of Hong Kong Government Earmarked Grant (CUHK 4161/99M).
文摘Critical concentrations of α-(1→3)-D-glucan L-FV-Ⅱ from Lentinus edodes were studied by viscometry andfluorescence probe techniques. The dependence of the reduced viscosity on concentration of the glucan in 0.5 mol/L NaOHaqueous solutions with or without urea showed two turning points corresponding to the dynamic contact concentration c_s andthe overlap concentration c~* of the polymer. The values of c_s and c~* were found to be 1×10^(-3) g cm^(-3) and 1.1×10^(-2) g cm^(-3),respectively, for L-FV-Ⅱ in 0.5 mol/L NaOH aqueous solutions. The two critical concentrations of L-FV-Ⅱ in 0.5 mol/LNaOH aqueous solutions were also found to be 1.2×10^(-3) g cm^(-3) fbr c_s and 9.2×10^(-3) g cm^(-3) for c~* from the concentrationdependence of phenanthrene fluorescence intensities. The overlap concentration c~* of L-FV-Ⅱ in 0.5 mol/L NaOH aqueoussolutions was lower than that of polystyrene with same molecular weight in benzene, owing to the fact that polysaccharidetends to undergo aggregation caused by intermolecular hydrogen bonding. A normal viscosity behavior of L-FV-Ⅱ in 0.5 mol/L urea/0.5 mol/L NaOH aqueous solutions can still be observed in an extremely low concentration range at 25℃.
基金supported by the National Natural Science Foundation of China(31972267 and 3227253)the Chinese Universities Scientific Fund(2023TC109)。
文摘Aphids are major insect pests in agriculture and forestry worldwide.Following attacks by natural enemies,many aphids release an alarm pheromone to protect their population.In most aphids,the main component of the aphid alarm pheromone(AAP)is the sesquiterpene hydrocarbon(E)-β-farnesene(EβF).However,the mechanisms behind its biosynthesis and regulation remain poorly understood.In this study,we used the bird cherry–oat aphid Rhopalosiphum padi,which is an important wheat aphid,to investigate the regulatory mechanisms of EβF biosynthesis.Our results showed that EβF biosynthesis occurs during the mature embryo period and the molting period of the 1st-and 2nd-instar nymphs.Triglycerides provide the prerequisite material for EβF production and release.Based on transcriptome sequencing,RNAi analysis,hormone treatments,and quantitative measurements,we found that the biosynthesis of EβF utilizes acetyl coenzyme A produced from fatty acid degradation,which can be suppressed by juvenile hormone but it is promoted by 20-hydroxyecdysone through the modulation of fatty acid metabolism.This is the first systemic study on the modulation of EβF production in aphids.The results of our study provide insights into the molecular regulatory mechanisms of AAP biosynthesis,as well as valuable information for designing potential aphid control strategies.
文摘Wordsworth devoted himself to the ideal of a harmonious relation between human and nature, between man and society, between man and the ego. In this sense, Wordsworth improved the development of ecology. This argument will be supported by the approach of eco-criticism and Heidegger's eco-philosophy. And it is supported by the following points.The first part points out that Wordsworth's love of nature led to his love of man, which was reflected by his care for common people. Part Two shows Wordsworth's solicitude for dwelling. His notion of dwelling had aspect of poetic dwelling. The harmonious human-nature relationship reveals thee essence of free dwelling. His poetic experiment agreed with Heidegger's argument on poetic creation. His discussion of free labour was like Heidegger's interpretation of"merit". Part Three tells about Wordsworth's great effort to amend the alienated human nature by treasuring the Child's nature, imagination and human feelings.In this way,the conclusion can be got: although it would be a huge project to reinterpret Wordsworth with the approaches of eco-criticism and Heidegger's eco-philosophy, it is still worth making the effort.
