生物质户外燃烧是影响环境空气质量的重要污染源,东北三省作为我国的重要农业产区,分析其生物质户外燃烧情况能够为当地秸秆资源综合利用和环境质量改善等提供依据.该研究基于卫星火点排放清单(Fire INventory from NCAR,FINN),分析了...生物质户外燃烧是影响环境空气质量的重要污染源,东北三省作为我国的重要农业产区,分析其生物质户外燃烧情况能够为当地秸秆资源综合利用和环境质量改善等提供依据.该研究基于卫星火点排放清单(Fire INventory from NCAR,FINN),分析了我国东北三省2016-2020年生物质户外燃烧火点的时空分布特征,结合空气质量监测数据进行了重污染天气成因分析,并建立了可用于数值模拟的生物质户外燃烧源网格化清单.结果表明:①东北三省2018-2019年火点数量较2016-2017年大幅减少,2020年有所增加.年内火点主要出现在春秋两季,春季相对更多.火点主要分布在东北平原,即黑龙江省的东部和西部,以及吉林省西部等,其他地区火点数量相对较少,呈零散式分布的特点.②该研究搭建了东北三省2016-2020年生物质户外燃烧源网格化清单,清单空间分辨率为3km,污染物种类包括SO_(2)、NOx、CO、NMVOC、NH_(3)、PM_(10)、PM_(2.5)、BC和OC等,2016-2020年污染物排放量总体上呈下降趋势,2020年NOx、SO_(2)、PM_(2.5)和PM_(10)的排放总量分别为3479.81、13418.5、215702.87和235495.21 t.③将2019年和2020年生物质户外燃烧污染物排放数据与空气质量数据进行时间拟合,发现部分城市在两个年份的春季秸秆集中燃烧时段均发生了重污染天气事件,且大气污染物浓度峰值与生物质户外燃烧排放污染物峰值出现的时间一致.研究显示,近年来东北三省生物质户外燃烧管控工作成效明显,大气污染物排放量总体上呈下降趋势,但仍然是东北三省部分城市春季发生重污染天气事件的重要原因之一,对部分生物质户外燃烧污染物排放量较大的城市应进一步严格秸秆禁烧等防控措施.该研究建立的生物质户外燃烧源网格化清单,可以更好地服务于区域空气质量数值模拟研究,应用在大气污染成因分析等多个方面,为制定更为精准的大气污染防治措施提供技术支撑.展开更多
The Adventures of Huckleberry Finn is Mark Twain's masterpiece,the one book from which,as Ernest Hemingway noted," All modern American literature comes ".It accounts the adventures of white Huck helping ...The Adventures of Huckleberry Finn is Mark Twain's masterpiece,the one book from which,as Ernest Hemingway noted," All modern American literature comes ".It accounts the adventures of white Huck helping black slave Jim escape and pursue freedom.Through their long journey along the Mississippi River,we can see panorama of America,such as its slavery,racial conflicts and integration,American Puritanism,and Westward Movement,etc.This thesis mainly deals with Americans'national traits reflected in The Adventures of Huckleberry Finn from the perspective of American developmental history and American culture.展开更多
The Adventures of Huckleberry Finn is one of the most famous works of Mark Twain. Huck has become the antihero in American literature. In addition, this kind of rebellion of spirit even has a realistic sense at presen...The Adventures of Huckleberry Finn is one of the most famous works of Mark Twain. Huck has become the antihero in American literature. In addition, this kind of rebellion of spirit even has a realistic sense at present. This paper discusses Jim's anti-slavery from its source and conception. At last, the author concludes the indelible artistic value of Jim.展开更多
The Adventures of Huckleberry Finn has been studied as a realistic work widely.Although The Adventures of Huckleberry Finn mainly work for the realism,there are also spark notes of romanticism in the book.So this essa...The Adventures of Huckleberry Finn has been studied as a realistic work widely.Although The Adventures of Huckleberry Finn mainly work for the realism,there are also spark notes of romanticism in the book.So this essay discusses the romanticism from its source and its conception,and the third part of this essay analyzes which parts and which points in the book show the romanticism,and analyzes the romanticism in the book from the general following aspects:description of the environment,the friendship between the main characters,the plots,and themes.At last,the author concludes the indelible artistic value in The Adventures of Huckleberry Finn.展开更多
In The Adventures of Huckleberry Finn,The Mississippi River is not just to provide a general background,but to constitute the center image of the novel.It gives"form"to the whole novel,all the adventures in ...In The Adventures of Huckleberry Finn,The Mississippi River is not just to provide a general background,but to constitute the center image of the novel.It gives"form"to the whole novel,all the adventures in the book begins with the river and ends with the river.This paper talks about the important river.It is a symbol of freedom and maternity,and it has deep meaning of life and regeneration,purification and sublimation.The symbols and senses of this river deepen the theme of the novel,and prop up its broad and profound metaphorical world.展开更多
Fluidization mechanism of liquefiable cargo is similar to that of sand liquefaction.But the cargo is subjected to more complex external loads during sea transportation.Based on two different constitutive models,numeri...Fluidization mechanism of liquefiable cargo is similar to that of sand liquefaction.But the cargo is subjected to more complex external loads during sea transportation.Based on two different constitutive models,numerical predictions were conducted in this study.And the effects of ship motions including motion acceleration,frequency and relative density of cargo on fluidization was investigated.By comparing with available the experimental data,validation is carried out.Results show that the roll motion is the most important one related to cargo fluidization.When the motion acceleration increases,the possibility of cargo fluidization increases.The higher of the cargo density the lower of the possibility of cargo fluidization.The effect of frequency on cargo fluidization is not unique,and it exists a critical value.The fluidization behavior of cargo could be described both by UBCSAND and FINN models.And the comparisons were discussed and summed up.展开更多
Mark Twain is a famous writer and orator in America.Being distinguished from many greatest American writers,Mark Twain is noted for his language.Humor and satire are the best generalizations of his writing style.He is...Mark Twain is a famous writer and orator in America.Being distinguished from many greatest American writers,Mark Twain is noted for his language.Humor and satire are the best generalizations of his writing style.He is superior to other contemporary writers in that he not only makes use of humorous language to create a ridiculous atmosphere,but also to raise the curtain over the darkness of American society.The Adventures of Huckleberry Finn is one of the most typical one that can show his unique language.The author makes a humorous effect through the application of exaggerated language,expands the effect through the explicit and implicit contrast of the discourse,and creates a humorous atmosphere through the use of vernacular and dialect.Based on the discussion of humor and its characteristics,this paper analyzes and arranges the humorous language of Mark Twain in The Adventures of Huckleberry Finn,and then discusses how Mark Twain achieves the humorous effect by violating the Cooperative Principle,thus revealing the theme.展开更多
Mark Twain’s The Adventures of Huckleberry Finn tells the story of Huck and Jim,a white boy and a black slave,who run away in search of freedom.The first part of this thesis is the literature review.Focus is put on t...Mark Twain’s The Adventures of Huckleberry Finn tells the story of Huck and Jim,a white boy and a black slave,who run away in search of freedom.The first part of this thesis is the literature review.Focus is put on the review of the freedom theme and analysis.The main body starts from the second part which divides Huck’s escape into three stages:Huck’s aversion and tolerance to the civilized society before escape,his decayed initiative in the pursuit of freedom during the escape and his return to search for freedom at the end.Through above analysis,the conclusion is reached:Mark Twain’s view of freedom in this novel is vague and ambiguous,and there are many paradoxes in it.He longs for personal freedom but cannot escape from the secular society.He is willing to resist repressing civilization but unable to revolt its invasion.展开更多
James R.Dickenson once observed,“It is the fate of great literature to bmisread and misunderstood as well as savored and appreciated”(The Guardian,April 14,1985).A typical case in point is Mark Twain’s Adventures o...James R.Dickenson once observed,“It is the fate of great literature to bmisread and misunderstood as well as savored and appreciated”(The Guardian,April 14,1985).A typical case in point is Mark Twain’s Adventures of Huck-leberry Finn.Perhaps it is the most controversial book in American literaryhistory.On the one hand,it met with the most unfavorable reception after itsappearance.Many of its first readers and critics were shocked by its franknessin expression and its straightforward attacks on the existing institutions展开更多
Adventures of Huckleberry Finn is one of the most greatest works of Mark Twain, an American literary giant in the 19th century, telling the story of fleeing and seeking for freedom along the Mississippi river. This pa...Adventures of Huckleberry Finn is one of the most greatest works of Mark Twain, an American literary giant in the 19th century, telling the story of fleeing and seeking for freedom along the Mississippi river. This paper will use the theory of core-periphery to analyze the encounter and mutual-helping of Huck and Jim.Their adventures reflect the fate of marginal characters, disclose some problems covered in the marginal spaces and make some marginal voices heard. What reflected behind is that the true,the good, and the beautiful of human nature and the righteousness of society are never absent.展开更多
This thesis attempts to investigate the humor in characterization in two novels,Sunshine Sketches of a Little Town by a Canadian writer Stephen Leacock and The Adventures ofHuckleberry Finn by an American writer Mark ...This thesis attempts to investigate the humor in characterization in two novels,Sunshine Sketches of a Little Town by a Canadian writer Stephen Leacock and The Adventures ofHuckleberry Finn by an American writer Mark Twain.Through comparison of characterization inthese two great works,the lively and funny appearances,psychological development and humorousconducts of the characters come to life.It does help readers have a thorough understanding of thehumor created by these two masters of realism in the worldwide literature.展开更多
In 1876 The Adventures of Tom Sawyer was published to wild national acclaim,cementing Twain's position as a behemoth in American literary circles.Twain began work on Huck Finn,a sequel to Tom Sawyer.This new novel...In 1876 The Adventures of Tom Sawyer was published to wild national acclaim,cementing Twain's position as a behemoth in American literary circles.Twain began work on Huck Finn,a sequel to Tom Sawyer.This new novel took on a much more serious character,however,as Twain focused increasingly on the institution of Huckleberry Finn,and his criticism to abuses of the society,the author aims to advocate the equality of human and humanitarianism.展开更多
文摘生物质户外燃烧是影响环境空气质量的重要污染源,东北三省作为我国的重要农业产区,分析其生物质户外燃烧情况能够为当地秸秆资源综合利用和环境质量改善等提供依据.该研究基于卫星火点排放清单(Fire INventory from NCAR,FINN),分析了我国东北三省2016-2020年生物质户外燃烧火点的时空分布特征,结合空气质量监测数据进行了重污染天气成因分析,并建立了可用于数值模拟的生物质户外燃烧源网格化清单.结果表明:①东北三省2018-2019年火点数量较2016-2017年大幅减少,2020年有所增加.年内火点主要出现在春秋两季,春季相对更多.火点主要分布在东北平原,即黑龙江省的东部和西部,以及吉林省西部等,其他地区火点数量相对较少,呈零散式分布的特点.②该研究搭建了东北三省2016-2020年生物质户外燃烧源网格化清单,清单空间分辨率为3km,污染物种类包括SO_(2)、NOx、CO、NMVOC、NH_(3)、PM_(10)、PM_(2.5)、BC和OC等,2016-2020年污染物排放量总体上呈下降趋势,2020年NOx、SO_(2)、PM_(2.5)和PM_(10)的排放总量分别为3479.81、13418.5、215702.87和235495.21 t.③将2019年和2020年生物质户外燃烧污染物排放数据与空气质量数据进行时间拟合,发现部分城市在两个年份的春季秸秆集中燃烧时段均发生了重污染天气事件,且大气污染物浓度峰值与生物质户外燃烧排放污染物峰值出现的时间一致.研究显示,近年来东北三省生物质户外燃烧管控工作成效明显,大气污染物排放量总体上呈下降趋势,但仍然是东北三省部分城市春季发生重污染天气事件的重要原因之一,对部分生物质户外燃烧污染物排放量较大的城市应进一步严格秸秆禁烧等防控措施.该研究建立的生物质户外燃烧源网格化清单,可以更好地服务于区域空气质量数值模拟研究,应用在大气污染成因分析等多个方面,为制定更为精准的大气污染防治措施提供技术支撑.
文摘The Adventures of Huckleberry Finn is Mark Twain's masterpiece,the one book from which,as Ernest Hemingway noted," All modern American literature comes ".It accounts the adventures of white Huck helping black slave Jim escape and pursue freedom.Through their long journey along the Mississippi River,we can see panorama of America,such as its slavery,racial conflicts and integration,American Puritanism,and Westward Movement,etc.This thesis mainly deals with Americans'national traits reflected in The Adventures of Huckleberry Finn from the perspective of American developmental history and American culture.
文摘The Adventures of Huckleberry Finn is one of the most famous works of Mark Twain. Huck has become the antihero in American literature. In addition, this kind of rebellion of spirit even has a realistic sense at present. This paper discusses Jim's anti-slavery from its source and conception. At last, the author concludes the indelible artistic value of Jim.
文摘The Adventures of Huckleberry Finn has been studied as a realistic work widely.Although The Adventures of Huckleberry Finn mainly work for the realism,there are also spark notes of romanticism in the book.So this essay discusses the romanticism from its source and its conception,and the third part of this essay analyzes which parts and which points in the book show the romanticism,and analyzes the romanticism in the book from the general following aspects:description of the environment,the friendship between the main characters,the plots,and themes.At last,the author concludes the indelible artistic value in The Adventures of Huckleberry Finn.
文摘In The Adventures of Huckleberry Finn,The Mississippi River is not just to provide a general background,but to constitute the center image of the novel.It gives"form"to the whole novel,all the adventures in the book begins with the river and ends with the river.This paper talks about the important river.It is a symbol of freedom and maternity,and it has deep meaning of life and regeneration,purification and sublimation.The symbols and senses of this river deepen the theme of the novel,and prop up its broad and profound metaphorical world.
基金supported by the National Natural Science Foundation of China(Grant No.51809237)the Fundamental Research Funds for the Provincial Universities(Grant No.2021J017).
文摘Fluidization mechanism of liquefiable cargo is similar to that of sand liquefaction.But the cargo is subjected to more complex external loads during sea transportation.Based on two different constitutive models,numerical predictions were conducted in this study.And the effects of ship motions including motion acceleration,frequency and relative density of cargo on fluidization was investigated.By comparing with available the experimental data,validation is carried out.Results show that the roll motion is the most important one related to cargo fluidization.When the motion acceleration increases,the possibility of cargo fluidization increases.The higher of the cargo density the lower of the possibility of cargo fluidization.The effect of frequency on cargo fluidization is not unique,and it exists a critical value.The fluidization behavior of cargo could be described both by UBCSAND and FINN models.And the comparisons were discussed and summed up.
文摘Mark Twain is a famous writer and orator in America.Being distinguished from many greatest American writers,Mark Twain is noted for his language.Humor and satire are the best generalizations of his writing style.He is superior to other contemporary writers in that he not only makes use of humorous language to create a ridiculous atmosphere,but also to raise the curtain over the darkness of American society.The Adventures of Huckleberry Finn is one of the most typical one that can show his unique language.The author makes a humorous effect through the application of exaggerated language,expands the effect through the explicit and implicit contrast of the discourse,and creates a humorous atmosphere through the use of vernacular and dialect.Based on the discussion of humor and its characteristics,this paper analyzes and arranges the humorous language of Mark Twain in The Adventures of Huckleberry Finn,and then discusses how Mark Twain achieves the humorous effect by violating the Cooperative Principle,thus revealing the theme.
文摘Mark Twain’s The Adventures of Huckleberry Finn tells the story of Huck and Jim,a white boy and a black slave,who run away in search of freedom.The first part of this thesis is the literature review.Focus is put on the review of the freedom theme and analysis.The main body starts from the second part which divides Huck’s escape into three stages:Huck’s aversion and tolerance to the civilized society before escape,his decayed initiative in the pursuit of freedom during the escape and his return to search for freedom at the end.Through above analysis,the conclusion is reached:Mark Twain’s view of freedom in this novel is vague and ambiguous,and there are many paradoxes in it.He longs for personal freedom but cannot escape from the secular society.He is willing to resist repressing civilization but unable to revolt its invasion.
文摘James R.Dickenson once observed,“It is the fate of great literature to bmisread and misunderstood as well as savored and appreciated”(The Guardian,April 14,1985).A typical case in point is Mark Twain’s Adventures of Huck-leberry Finn.Perhaps it is the most controversial book in American literaryhistory.On the one hand,it met with the most unfavorable reception after itsappearance.Many of its first readers and critics were shocked by its franknessin expression and its straightforward attacks on the existing institutions
文摘Adventures of Huckleberry Finn is one of the most greatest works of Mark Twain, an American literary giant in the 19th century, telling the story of fleeing and seeking for freedom along the Mississippi river. This paper will use the theory of core-periphery to analyze the encounter and mutual-helping of Huck and Jim.Their adventures reflect the fate of marginal characters, disclose some problems covered in the marginal spaces and make some marginal voices heard. What reflected behind is that the true,the good, and the beautiful of human nature and the righteousness of society are never absent.
文摘This thesis attempts to investigate the humor in characterization in two novels,Sunshine Sketches of a Little Town by a Canadian writer Stephen Leacock and The Adventures ofHuckleberry Finn by an American writer Mark Twain.Through comparison of characterization inthese two great works,the lively and funny appearances,psychological development and humorousconducts of the characters come to life.It does help readers have a thorough understanding of thehumor created by these two masters of realism in the worldwide literature.
文摘In 1876 The Adventures of Tom Sawyer was published to wild national acclaim,cementing Twain's position as a behemoth in American literary circles.Twain began work on Huck Finn,a sequel to Tom Sawyer.This new novel took on a much more serious character,however,as Twain focused increasingly on the institution of Huckleberry Finn,and his criticism to abuses of the society,the author aims to advocate the equality of human and humanitarianism.
