The emphasis on the combination of physical space and metaphorical space is a major feature of Hawthorne’s narrative.This paper analyzes cultural space in Hawthorne’s travel writing,centering on his works The Old Ma...The emphasis on the combination of physical space and metaphorical space is a major feature of Hawthorne’s narrative.This paper analyzes cultural space in Hawthorne’s travel writing,centering on his works The Old Manse and The Marble Faun from the perspective of neutral territory.The old manse and Rome carry different cultural metaphors,each reflecting a complex and subtle narrative space.Individually,Hawthorne transforms the old manse into Thoreauesque cabin,where American is affected by“sleepiness”and gains spiritual healing.At the national level,Hawthorne creates an allegorical Italy as borderland to explore the existence of American civilization.展开更多
Nathaniel Hawthorne was a well-known and highly honored American novelist of the 19th century, who has had a positive and profound influence on the development of Western Literature, especially on novel writing. His w...Nathaniel Hawthorne was a well-known and highly honored American novelist of the 19th century, who has had a positive and profound influence on the development of Western Literature, especially on novel writing. His works-The Scarlet letter is world-wide recognized as a classic, which makes him an eternal radiant in American literature. This paper aims at introducing and analysing the background against which he was brought up and also the conceptive process of his works especially The Scarlet Letter and others.展开更多
Hawthorne was a great writer who reminds us of human limitations.He called his tales "allegories of the heart." Hawthorne's allegories are stories of how pride and isolation frustrate our capacity for lo...Hawthorne was a great writer who reminds us of human limitations.He called his tales "allegories of the heart." Hawthorne's allegories are stories of how pride and isolation frustrate our capacity for love and sympathy.Isolation or "alienation" is Hawthorne's principal theme and problem,and loss of contact with reality is the ultimate penalty he envisions.Therefore,reading Hawthorne's stories is a journey to explore human being's evil.展开更多
The Scarlet Letter by Nathaniel Hawthorne is a classical novel in American literature in the 19th century.Hawthorne is deeply influenced by Puritanism.His representative work, The Scarlet Letter, reflects the Calvinis...The Scarlet Letter by Nathaniel Hawthorne is a classical novel in American literature in the 19th century.Hawthorne is deeply influenced by Puritanism.His representative work, The Scarlet Letter, reflects the Calvinistic thought of "Original Sin".His novel also expresses his pious attitude with skepticism for ethics and morality of Puritanism.On one hand,Hawthorne strongly criticizes Calvinism for constraining human nature, and on the other hand, regards some social problems as the sake of evil human nature.He advocates the believers to clear themselves of guilt and to purify their hearts by penitence and kindness.展开更多
Nathaniel Hawthorne is considered as one of the greatest American novelists in 19th century and his reputation has been on the increase with the publication of The Scarlet Letter. This paper concentrates on the origin...Nathaniel Hawthorne is considered as one of the greatest American novelists in 19th century and his reputation has been on the increase with the publication of The Scarlet Letter. This paper concentrates on the origin of Hawthorne's ecofeminist consciousness from three aspects for the hope that readers can get a fuller understanding of his complex attitude towards nature and women.展开更多
Hawthorne is at his best when dealing with the topics of the sin, the supernatural, and the New England past. As a great symbolist, Hawthorne made good use of symbols to express his ideas. Some important symbols in hi...Hawthorne is at his best when dealing with the topics of the sin, the supernatural, and the New England past. As a great symbolist, Hawthorne made good use of symbols to express his ideas. Some important symbols in his "Young Goodman Brown", such as the pink ribbons, the fellow traveler’s staff, are closely associated with the theme, relating to man’s sins. This paper briefly discusses the use of allegory and symbolism in his "Young Goodman Brown" with a view to contributing to a better understanding of the whole story.展开更多
College English teaching faces many problems nowadays,which lead to a lack of learning motivation for students and a lack ofteaching effectiveness for teachers.Therefore,"Hawthorne Effect"must be adopted to ...College English teaching faces many problems nowadays,which lead to a lack of learning motivation for students and a lack ofteaching effectiveness for teachers.Therefore,"Hawthorne Effect"must be adopted to improve the teaching effect in English class.Thetwo approaches:concern of learning goals and concern of learning environment are explained in details in this study.展开更多
The House of the Seven Gables （1981）, Hawthorne＇s second romance, is his another masterpiece after The Scarlet Letter （1956）. The achievement of its themes and narrative skills has been greatly complimented by re...The House of the Seven Gables （1981）, Hawthorne＇s second romance, is his another masterpiece after The Scarlet Letter （1956）. The achievement of its themes and narrative skills has been greatly complimented by readers, especially its descriptions and analyses of the characters＇ psychological activities and their personalities. The notorious Salem Witch Trials of Hawthorne＇s family has a great effect on Hawthorne＇s formation of his views about the good and evil, the sin and penalty, and the psychological descriptive style in his works. In The House of the Seven Gables, Hawthorne takes this family history as the original writing background. Through exploring modem people＇s spiritual essence, using history as narrative original, Hawthorne＇s theme illustrates the past＇s influence on the present. By exploring the changes of the characters＇ psychologies and values, especially those of Holgrave, the narrator proposes a conception of general love to eradicate the actual contradictions. Hawthorne actually provides an alternative way--a nonpolitical solution to the national problems, which demonstrates not only his artistic pursuit but also his culturally political view in his writing. This paper consists of five parts.展开更多
Although Emerson, Thoreau and Hawthorne were all influenced by transcendentalism, they have different understanding of and attitudes towards nature and the concept of transcendentalism because of their cultural backgr...Although Emerson, Thoreau and Hawthorne were all influenced by transcendentalism, they have different understanding of and attitudes towards nature and the concept of transcendentalism because of their cultural background. Through analyzing similarities and differences of their points of view of nature, people can find that they understand nature with an increasingly deeper tendency. Firstly, Emerson only knew that people could get comfort from nature in the spiritual world, and then Thoreau found out that people could make use of nature from a more substantial way. At last, Hawthorne set a dialectical view of how people should live with nature. As a result, people learn what kind of relationship people should set with nature. Not only can people benefit from nature in their spiritual world, but also they make use of resources in it. This is the reason why people should protect nature during the process of utilizing it.展开更多
Nathaniel Hawthorne,a 19th-century American writer of novels and short stories,is considered an important representative of Puritanism;symbolism and romanticismin American literature.He was imbued with an inquiring im...Nathaniel Hawthorne,a 19th-century American writer of novels and short stories,is considered an important representative of Puritanism;symbolism and romanticismin American literature.He was imbued with an inquiring imagination,a meditativemind,and an unceasing interest in the ambiguity of man’s being.He was interestedin the lonely and dark side of man,and in the man’s need to look into his own soul.Throughout his 1ife,he wrote many works which espoused the complexities and senseof guilt of the human being.On first perusal of his tales and romances,one展开更多
[Objectives]To investigate the effects of three foliar fertilizers on photosynthetic characteristics,fruit quality and yield of hawthorn.[Methods]Taking hawthorn foliar fertilization as the reference,the photosyntheti...[Objectives]To investigate the effects of three foliar fertilizers on photosynthetic characteristics,fruit quality and yield of hawthorn.[Methods]Taking hawthorn foliar fertilization as the reference,the photosynthetic rate,transpiration rate,intercellular CO 2 concentration,stomatal conductance and single fruit weight of hawthorn leaves were measured under different concentrations of foliar fertilizer.[Results]The results showed that the photosynthetic rate,transpiration rate and stomatal conductance of hawthorn leaves increased significantly,while the intercellular CO 2 concentration decreased.Specifically,the fish protein peptide foliar fertilizer performed best,with net photosynthetic rate and transpiration rate increased by 57.22%and 57.51%,respectively.All the three foliar fertilizers significantly reduced the intercellular CO 2 concentration.In addition,fertilization significantly increased the single fruit weight of hawthorn,and the effect of fermented fulvic acid foliar fertilizer was the most significant,with the highest growth rate of 68.49%.[Conclusions]Spraying foliar fertilizer significantly increased the content of Vc,titratable acid,anthocyanin and soluble solids of hawthorn fruit,among which fermented fulvic acid foliar fertilizer had the optimal effect.展开更多
Hawthorns are important medicinal and edible plants with a long history of health protection in China.Besides cultivated hawthorn,other wild hawthorns may also have excellent medicinal and edible value,such as Crataeg...Hawthorns are important medicinal and edible plants with a long history of health protection in China.Besides cultivated hawthorn,other wild hawthorns may also have excellent medicinal and edible value,such as Crataegus chungtienensis,an endemic species distributed in the Southwest of China.In this study,by integrating the flavor-related metabolome and transcriptome data of the ripening fruit of C.chungtienensis,we have developed an understanding of the formation of hawthorn fruit quality.The results show that a total of 849 metabolites were detected in the young and mature fruit of C.chungtienensis,of which flavonoids were the most detected metabolites.Among the differentially accumulated metabolites,stachyose,maltotetraose and cis-aconitic acid were significantly increased during fruit ripening,and these may be important metabolites affecting fruit flavor change.Moreover,several flavonoids and terpenoids were reduced after fruit ripening compared with young fruit.Therefore,using the unripe fruit of C.chungtienensis may allow us to obtain more medicinal active ingredients such as flavonoids and terpenoids.Furthermore,we screened out some differentially expressed genes(DEGs)related to fruit quality formation,which had important relationships with differentially accumulated sugars,acids,flavonoids and terpenoids.Our study provides new insights into flavor formation in wild hawthorn during fruit development and ripening,and at the same time this study lays the foundation for the improvement of hawthorn fruit flavor.展开更多
Aim To establish an RP-HPLC method for simultaneous determination of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract. Methods Chromatography was carfled out on Kromasil C18 column （250 mm...Aim To establish an RP-HPLC method for simultaneous determination of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract. Methods Chromatography was carfled out on Kromasil C18 column （250 mm × 4.6 mm, 5 μm）, using THF-CH3CN-H2O-H3PO4 （30 ： 5： 125 ： 0. 1） as the mobile phase at a flow rate of 1.0 mL·min^-1. The UV detection wavelength was 270 nm. Results The linear range of 2＂-O-rhamnosyl vitexin and vitexin were 0. 106 4 μg - 2. 1280 μg （ r =0. 999 1 ） and 0. 139 2μg - 2. 784 0 μg （ r =0. 999 3 ）, respectively. The average recoveries of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf were 99.2% （ RSD = 2.80%, n = 6） and 100.6% （ RSD = 2.84%, n = 6）, respectively. Conclusion This method is reproducible, simple, precise, and rapid for simultaneous determination of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract, thereby providinge the basis for quality specification of Chinese hawthorn leaf and its extract.展开更多
[Objective] Fermentation process of hawthorn vinegar was investigated in order to explore the effect of process andobtain superior process of hawthorn vine- gar. [Method] Fermentation process of hawthorn vinegar was f...[Objective] Fermentation process of hawthorn vinegar was investigated in order to explore the effect of process andobtain superior process of hawthorn vine- gar. [Method] Fermentation process of hawthorn vinegar was firstly optimized using Box-Behnken methodologyof 3-factor and 3-level, and the effect of process was an- alyzed. Secondly, it was also finished to build secondary multivariate regression model related to yield of acetic acid. [Results] The optimal fermentation process ob- tained by response surface methodology was as follows： inoculum size of 10%, or- iginal alcohol content of 7.0% and temperature of 30 ^（3. In optimal condition, yield of acetic acid was 51.76 g/L which was close to predicted value （51.77 g/L）. In the model, interaction of inoculum size and original alcohol content was extremely signif- icant. In contrast, interaction of others was non-significant. [Conclusion] Response surface methodology is advisable to be used for process optimization of hawthorn vinegar.展开更多
[Objective] The aim was to explore the most efficient medium for pollen germination and suitable pollen storage temperature for three different hawthorn species in Xinjiang, and to lay foundation for the development a...[Objective] The aim was to explore the most efficient medium for pollen germination and suitable pollen storage temperature for three different hawthorn species in Xinjiang, and to lay foundation for the development and utilization of wild hawthorn resources. [Method] A randomized block design was adopted to select the most suitable concentrations of sucrose and boric acid in the medium for pollen germination under in vitro culture. The vitality of the pollens stored at different tem- peratures for six mouths was measured once every 10 d using the optimum medi- um selected in above steps. [Result] The most efficient medium for Altai hawthorn pollen germination was 1% agar ＋ 0.05% boric acid ＋ 15% sucrose, and its germi- nation rate in this medium was 30.8%; the most suitable medium for crabapple hawthorn pollen germination was 1% agar ＋ 0.01% boric acid ＋ 15% sucrose, and its germination rate in this medium was 58.7%; and the highest germination rate of Junggar hawthorn pollen was found in the medium containing 1% agar ＋ 0.01% boric acid ＋ 20% sucrose, and the germination rate reached 67.2%. There were extremely significant differences （P〈0.01） in germination rate between these treat- ments and others in each species. The pollen vitality of Altai hawthorn, crabapple hawthorn and Junggar hawthorn were lost completely after they were stored at room temperature for 40, 60 and 70 d; at 4-5 ℃ for 90, 130, and 140 d; or at -18 ℃ for 130, 160 and 170 d. Therefore, -18 ℃ was found the most efficient storage temperature for the three hawthorn species＇ pollen among the three different stor- age temperatures. [Conclusion] A certain concentration of sucrose and boric acid can promote pollen germination of the three hawthorn species. Under different stor- age temperatures, the pollen vitality of the three hawthorn species can maintain for a longer period at -18 ℃ than at 4-5 ℃, and for the shortest period at room tem- perature.展开更多
The Scarlet Letter makes the American writer Nathaniel Hawthorne known all around the world. There are many aspects worth our consideration in The Scarlet Letter, but one about human nature and moral problems is espec...The Scarlet Letter makes the American writer Nathaniel Hawthorne known all around the world. There are many aspects worth our consideration in The Scarlet Letter, but one about human nature and moral problems is especially deserving of our discussion. This paper mainly reveals the beauty and ugliness of human nature by analyzing the honesty and hypocrisy of the three leading characters in The Scarlet Letter. Hester Prynne is an honest woman, who bravely admits her love to the young minister Dimmesdale and never cheats her husband Chillingworth. Whereas, honesty and hypocrisy have no clear borderline on Dimmesdale and Chillingworth. Because of atonement, the timid, hypocritical minister surpasses himself and returns to honesty at last, but the once-honest scholar changes himself into Satan due to revenge. The paper mainly tells people that the best policy for man is to be true, honest, and ever ready to show one's worst to the outside world.展开更多
Conceptual metaphor has always been the study focus of cognitive linguistics. Conceptual metaphor is ubiquitous, cognitive and systematic. Nathaniel Hawthorne in his representative work The Scarlet Letter makes full u...Conceptual metaphor has always been the study focus of cognitive linguistics. Conceptual metaphor is ubiquitous, cognitive and systematic. Nathaniel Hawthorne in his representative work The Scarlet Letter makes full use of the conceptual metaphor. A detailed description of the heroine Hester Prynne through the conceptual metaphor fully expresses Nathaniel Hawthorne＇ s feminist thoughts. Through the metaphorical analyses of the name Pearl, the scarlet letter ＂A＂, the forest and the scaffold this paper analyzes Hester Prynne＇ s resistant consciousness. On the basis of this, the positive social significance of the novel is explored.展开更多
The Scarlet Letter is Nathaniel Hawthorne's masterpiece, representing the height of Hawthorne's literary genius. This thesis tries to reveal part of the author's psychological activities, repressed feeling...The Scarlet Letter is Nathaniel Hawthorne's masterpiece, representing the height of Hawthorne's literary genius. This thesis tries to reveal part of the author's psychological activities, repressed feelings from his childhood from analyzing the main characters, especially Hester, the mother and Pearl, the daughter.展开更多
Deconstruction, advocated by Jacques Derrida, is a critic outlook that indicates the pitfall of the philosophical dichotomy in Western convention, revealing the unreliability of human language and conception. Hawthorn...Deconstruction, advocated by Jacques Derrida, is a critic outlook that indicates the pitfall of the philosophical dichotomy in Western convention, revealing the unreliability of human language and conception. Hawthorne's The Minister's Black Veil,with the obscurity and uncertainty in its disclosure, offers the feasibility for a deconstruction study. The binary oppositions and its deconstruction of the "black veil" in perspective of persona, idea and existence contribute to the void perception and activities of Mr.Hooper, the protagonist as well as the author's literary practice.展开更多
基金funded by The 14th Postgraduate Education Innovation Fund of Wuhan Institute of Technology(Project Number:CX2022491).
文摘The emphasis on the combination of physical space and metaphorical space is a major feature of Hawthorne’s narrative.This paper analyzes cultural space in Hawthorne’s travel writing,centering on his works The Old Manse and The Marble Faun from the perspective of neutral territory.The old manse and Rome carry different cultural metaphors,each reflecting a complex and subtle narrative space.Individually,Hawthorne transforms the old manse into Thoreauesque cabin,where American is affected by“sleepiness”and gains spiritual healing.At the national level,Hawthorne creates an allegorical Italy as borderland to explore the existence of American civilization.
文摘Nathaniel Hawthorne was a well-known and highly honored American novelist of the 19th century, who has had a positive and profound influence on the development of Western Literature, especially on novel writing. His works-The Scarlet letter is world-wide recognized as a classic, which makes him an eternal radiant in American literature. This paper aims at introducing and analysing the background against which he was brought up and also the conceptive process of his works especially The Scarlet Letter and others.
文摘Hawthorne was a great writer who reminds us of human limitations.He called his tales "allegories of the heart." Hawthorne's allegories are stories of how pride and isolation frustrate our capacity for love and sympathy.Isolation or "alienation" is Hawthorne's principal theme and problem,and loss of contact with reality is the ultimate penalty he envisions.Therefore,reading Hawthorne's stories is a journey to explore human being's evil.
文摘The Scarlet Letter by Nathaniel Hawthorne is a classical novel in American literature in the 19th century.Hawthorne is deeply influenced by Puritanism.His representative work, The Scarlet Letter, reflects the Calvinistic thought of "Original Sin".His novel also expresses his pious attitude with skepticism for ethics and morality of Puritanism.On one hand,Hawthorne strongly criticizes Calvinism for constraining human nature, and on the other hand, regards some social problems as the sake of evil human nature.He advocates the believers to clear themselves of guilt and to purify their hearts by penitence and kindness.
文摘Nathaniel Hawthorne is considered as one of the greatest American novelists in 19th century and his reputation has been on the increase with the publication of The Scarlet Letter. This paper concentrates on the origin of Hawthorne's ecofeminist consciousness from three aspects for the hope that readers can get a fuller understanding of his complex attitude towards nature and women.
文摘Hawthorne is at his best when dealing with the topics of the sin, the supernatural, and the New England past. As a great symbolist, Hawthorne made good use of symbols to express his ideas. Some important symbols in his "Young Goodman Brown", such as the pink ribbons, the fellow traveler’s staff, are closely associated with the theme, relating to man’s sins. This paper briefly discusses the use of allegory and symbolism in his "Young Goodman Brown" with a view to contributing to a better understanding of the whole story.
文摘College English teaching faces many problems nowadays,which lead to a lack of learning motivation for students and a lack ofteaching effectiveness for teachers.Therefore,"Hawthorne Effect"must be adopted to improve the teaching effect in English class.Thetwo approaches:concern of learning goals and concern of learning environment are explained in details in this study.
文摘The House of the Seven Gables （1981）, Hawthorne＇s second romance, is his another masterpiece after The Scarlet Letter （1956）. The achievement of its themes and narrative skills has been greatly complimented by readers, especially its descriptions and analyses of the characters＇ psychological activities and their personalities. The notorious Salem Witch Trials of Hawthorne＇s family has a great effect on Hawthorne＇s formation of his views about the good and evil, the sin and penalty, and the psychological descriptive style in his works. In The House of the Seven Gables, Hawthorne takes this family history as the original writing background. Through exploring modem people＇s spiritual essence, using history as narrative original, Hawthorne＇s theme illustrates the past＇s influence on the present. By exploring the changes of the characters＇ psychologies and values, especially those of Holgrave, the narrator proposes a conception of general love to eradicate the actual contradictions. Hawthorne actually provides an alternative way--a nonpolitical solution to the national problems, which demonstrates not only his artistic pursuit but also his culturally political view in his writing. This paper consists of five parts.
文摘Although Emerson, Thoreau and Hawthorne were all influenced by transcendentalism, they have different understanding of and attitudes towards nature and the concept of transcendentalism because of their cultural background. Through analyzing similarities and differences of their points of view of nature, people can find that they understand nature with an increasingly deeper tendency. Firstly, Emerson only knew that people could get comfort from nature in the spiritual world, and then Thoreau found out that people could make use of nature from a more substantial way. At last, Hawthorne set a dialectical view of how people should live with nature. As a result, people learn what kind of relationship people should set with nature. Not only can people benefit from nature in their spiritual world, but also they make use of resources in it. This is the reason why people should protect nature during the process of utilizing it.
文摘Nathaniel Hawthorne,a 19th-century American writer of novels and short stories,is considered an important representative of Puritanism;symbolism and romanticismin American literature.He was imbued with an inquiring imagination,a meditativemind,and an unceasing interest in the ambiguity of man’s being.He was interestedin the lonely and dark side of man,and in the man’s need to look into his own soul.Throughout his 1ife,he wrote many works which espoused the complexities and senseof guilt of the human being.On first perusal of his tales and romances,one
基金Supported by Project of Hebei Provincial Department of Science and Technology"Key Technology Research and Industrialization Development Project of Hawthorn Industry in Xinglong County"(23317102D)Project of Hebei(Chengde)Hawthorn Industry Technology Research Institute.
文摘[Objectives]To investigate the effects of three foliar fertilizers on photosynthetic characteristics,fruit quality and yield of hawthorn.[Methods]Taking hawthorn foliar fertilization as the reference,the photosynthetic rate,transpiration rate,intercellular CO 2 concentration,stomatal conductance and single fruit weight of hawthorn leaves were measured under different concentrations of foliar fertilizer.[Results]The results showed that the photosynthetic rate,transpiration rate and stomatal conductance of hawthorn leaves increased significantly,while the intercellular CO 2 concentration decreased.Specifically,the fish protein peptide foliar fertilizer performed best,with net photosynthetic rate and transpiration rate increased by 57.22%and 57.51%,respectively.All the three foliar fertilizers significantly reduced the intercellular CO 2 concentration.In addition,fertilization significantly increased the single fruit weight of hawthorn,and the effect of fermented fulvic acid foliar fertilizer was the most significant,with the highest growth rate of 68.49%.[Conclusions]Spraying foliar fertilizer significantly increased the content of Vc,titratable acid,anthocyanin and soluble solids of hawthorn fruit,among which fermented fulvic acid foliar fertilizer had the optimal effect.
基金supported by the National Natural Science Foundation of China(32260094,32060237 to T.Z.,82260739 to G.L.,and 32060085 to Q.Q.)the Major Science and Technology Project of Yunnan Province(202102AE090031)to G.L.
文摘Hawthorns are important medicinal and edible plants with a long history of health protection in China.Besides cultivated hawthorn,other wild hawthorns may also have excellent medicinal and edible value,such as Crataegus chungtienensis,an endemic species distributed in the Southwest of China.In this study,by integrating the flavor-related metabolome and transcriptome data of the ripening fruit of C.chungtienensis,we have developed an understanding of the formation of hawthorn fruit quality.The results show that a total of 849 metabolites were detected in the young and mature fruit of C.chungtienensis,of which flavonoids were the most detected metabolites.Among the differentially accumulated metabolites,stachyose,maltotetraose and cis-aconitic acid were significantly increased during fruit ripening,and these may be important metabolites affecting fruit flavor change.Moreover,several flavonoids and terpenoids were reduced after fruit ripening compared with young fruit.Therefore,using the unripe fruit of C.chungtienensis may allow us to obtain more medicinal active ingredients such as flavonoids and terpenoids.Furthermore,we screened out some differentially expressed genes(DEGs)related to fruit quality formation,which had important relationships with differentially accumulated sugars,acids,flavonoids and terpenoids.Our study provides new insights into flavor formation in wild hawthorn during fruit development and ripening,and at the same time this study lays the foundation for the improvement of hawthorn fruit flavor.
文摘Aim To establish an RP-HPLC method for simultaneous determination of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract. Methods Chromatography was carfled out on Kromasil C18 column （250 mm × 4.6 mm, 5 μm）, using THF-CH3CN-H2O-H3PO4 （30 ： 5： 125 ： 0. 1） as the mobile phase at a flow rate of 1.0 mL·min^-1. The UV detection wavelength was 270 nm. Results The linear range of 2＂-O-rhamnosyl vitexin and vitexin were 0. 106 4 μg - 2. 1280 μg （ r =0. 999 1 ） and 0. 139 2μg - 2. 784 0 μg （ r =0. 999 3 ）, respectively. The average recoveries of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf were 99.2% （ RSD = 2.80%, n = 6） and 100.6% （ RSD = 2.84%, n = 6）, respectively. Conclusion This method is reproducible, simple, precise, and rapid for simultaneous determination of 2＂-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract, thereby providinge the basis for quality specification of Chinese hawthorn leaf and its extract.
基金Supported by Science and Technology Project Program of Guangdong Province(No.2014B040404027)~~
文摘[Objective] Fermentation process of hawthorn vinegar was investigated in order to explore the effect of process andobtain superior process of hawthorn vine- gar. [Method] Fermentation process of hawthorn vinegar was firstly optimized using Box-Behnken methodologyof 3-factor and 3-level, and the effect of process was an- alyzed. Secondly, it was also finished to build secondary multivariate regression model related to yield of acetic acid. [Results] The optimal fermentation process ob- tained by response surface methodology was as follows： inoculum size of 10%, or- iginal alcohol content of 7.0% and temperature of 30 ^（3. In optimal condition, yield of acetic acid was 51.76 g/L which was close to predicted value （51.77 g/L）. In the model, interaction of inoculum size and original alcohol content was extremely signif- icant. In contrast, interaction of others was non-significant. [Conclusion] Response surface methodology is advisable to be used for process optimization of hawthorn vinegar.
基金Supported by Special Fund for Forestry-scientific Research in the Public Interest(201404722)Xinjiang Uygur Autonomous Region Fruit Trees Key Subject~~
文摘[Objective] The aim was to explore the most efficient medium for pollen germination and suitable pollen storage temperature for three different hawthorn species in Xinjiang, and to lay foundation for the development and utilization of wild hawthorn resources. [Method] A randomized block design was adopted to select the most suitable concentrations of sucrose and boric acid in the medium for pollen germination under in vitro culture. The vitality of the pollens stored at different tem- peratures for six mouths was measured once every 10 d using the optimum medi- um selected in above steps. [Result] The most efficient medium for Altai hawthorn pollen germination was 1% agar ＋ 0.05% boric acid ＋ 15% sucrose, and its germi- nation rate in this medium was 30.8%; the most suitable medium for crabapple hawthorn pollen germination was 1% agar ＋ 0.01% boric acid ＋ 15% sucrose, and its germination rate in this medium was 58.7%; and the highest germination rate of Junggar hawthorn pollen was found in the medium containing 1% agar ＋ 0.01% boric acid ＋ 20% sucrose, and the germination rate reached 67.2%. There were extremely significant differences （P〈0.01） in germination rate between these treat- ments and others in each species. The pollen vitality of Altai hawthorn, crabapple hawthorn and Junggar hawthorn were lost completely after they were stored at room temperature for 40, 60 and 70 d; at 4-5 ℃ for 90, 130, and 140 d; or at -18 ℃ for 130, 160 and 170 d. Therefore, -18 ℃ was found the most efficient storage temperature for the three hawthorn species＇ pollen among the three different stor- age temperatures. [Conclusion] A certain concentration of sucrose and boric acid can promote pollen germination of the three hawthorn species. Under different stor- age temperatures, the pollen vitality of the three hawthorn species can maintain for a longer period at -18 ℃ than at 4-5 ℃, and for the shortest period at room tem- perature.
文摘The Scarlet Letter makes the American writer Nathaniel Hawthorne known all around the world. There are many aspects worth our consideration in The Scarlet Letter, but one about human nature and moral problems is especially deserving of our discussion. This paper mainly reveals the beauty and ugliness of human nature by analyzing the honesty and hypocrisy of the three leading characters in The Scarlet Letter. Hester Prynne is an honest woman, who bravely admits her love to the young minister Dimmesdale and never cheats her husband Chillingworth. Whereas, honesty and hypocrisy have no clear borderline on Dimmesdale and Chillingworth. Because of atonement, the timid, hypocritical minister surpasses himself and returns to honesty at last, but the once-honest scholar changes himself into Satan due to revenge. The paper mainly tells people that the best policy for man is to be true, honest, and ever ready to show one's worst to the outside world.
文摘Conceptual metaphor has always been the study focus of cognitive linguistics. Conceptual metaphor is ubiquitous, cognitive and systematic. Nathaniel Hawthorne in his representative work The Scarlet Letter makes full use of the conceptual metaphor. A detailed description of the heroine Hester Prynne through the conceptual metaphor fully expresses Nathaniel Hawthorne＇ s feminist thoughts. Through the metaphorical analyses of the name Pearl, the scarlet letter ＂A＂, the forest and the scaffold this paper analyzes Hester Prynne＇ s resistant consciousness. On the basis of this, the positive social significance of the novel is explored.
文摘The Scarlet Letter is Nathaniel Hawthorne's masterpiece, representing the height of Hawthorne's literary genius. This thesis tries to reveal part of the author's psychological activities, repressed feelings from his childhood from analyzing the main characters, especially Hester, the mother and Pearl, the daughter.
文摘Deconstruction, advocated by Jacques Derrida, is a critic outlook that indicates the pitfall of the philosophical dichotomy in Western convention, revealing the unreliability of human language and conception. Hawthorne's The Minister's Black Veil,with the obscurity and uncertainty in its disclosure, offers the feasibility for a deconstruction study. The binary oppositions and its deconstruction of the "black veil" in perspective of persona, idea and existence contribute to the void perception and activities of Mr.Hooper, the protagonist as well as the author's literary practice.
