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海洋暗光层颗粒附着微生物的群落演替和生态功能
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作者 荆红梅 刘皓 +1 位作者 张玥 刘红斌 《河南师范大学学报(自然科学版)》 CAS 北大核心 2024年第5期126-133,共8页
暗光层是各类元素到达更深水域或海底的必经通道,是海洋对颗粒有机物(particulate organic matter,POM)进行显著降解和生物利用的水层.微生物参与了暗光层中有机物的迁移转化过程,但对其群落演替和代谢活性知之甚少.研究总结了暗光层的... 暗光层是各类元素到达更深水域或海底的必经通道,是海洋对颗粒有机物(particulate organic matter,POM)进行显著降解和生物利用的水层.微生物参与了暗光层中有机物的迁移转化过程,但对其群落演替和代谢活性知之甚少.研究总结了暗光层的环境特征及相关微生物类群的结构和功能,并结合不同海域暗光层上下界面垂直水层中的颗粒附着微生物的群落演替、碳源利用及潜在的生态功能,来解析微生物在暗光层中的空间动态变化,并反映该生态位中微生物对碳源的选择偏好.在未来全球变暖与海洋生物泵作用相对增强的背景下.今后的研究更需聚焦暗光层中的微生物类群,并统一POM粒级划分标准,来阐明暗光层中微型碳泵和深海碳沉降的调控及贡献. 展开更多
关键词 暗光层 颗粒有机物 群落演替 碳源利用 生态功能
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Application of Cooperative Principle in “Twilight:Saga and Eclipse”
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作者 康丽娉 《海外英语》 2010年第9X期206-207,209,共3页
After the title was "Harry Potter era" magical masterpiece,"Lord of the Rings","Harry Potter" and;"he Chronicles of Narnia" " Twilight of the City" Series on behalf of... After the title was "Harry Potter era" magical masterpiece,"Lord of the Rings","Harry Potter" and;"he Chronicles of Narnia" " Twilight of the City" Series on behalf of the international magic series.The "Twilight of the City" series are sold in the United States had more than 50 million.And the movie is also popular in the world.The hero,Edward Cullen,is popular in the world,many comments come to this character,to understand the movie more clearly,this paper will analysis the hero,Edward Cullen,from the application of cooperative principle,finding out the conflict in his heart. 展开更多
关键词 twilight SAGA and ECLIPSE APPLICATION of COOPERATIVE PRINCIPLE
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On The Subtitle of Twilight Saga from the Perspective of Nida's Functional Equivalence Theory 被引量:3
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作者 黄帆 《海外英语》 2012年第21期116-117,133,共3页
More and more foreign movies and TV series has been translated into Chinese,but there is still no mature theory to guide the subtitle translation.The subtitle of Twilight Saga has been selected as examples to discuss ... More and more foreign movies and TV series has been translated into Chinese,but there is still no mature theory to guide the subtitle translation.The subtitle of Twilight Saga has been selected as examples to discuss how to apply Eugene A.Ni da's"Functional Equivalence Theory"into the movie translation to achieve expected effect. 展开更多
关键词 Functional EQUIVALENCE Theory SUBTITLE TRANSLATION
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A Comparative Analysis of English and Chinese Versions of Twilight from the Perspective of Three Metafunctions
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作者 邓雪莹 《海外英语》 2013年第17期176-179,181,共5页
The Twilight Saga written by American novelist Stephenie Meyer, tells the love story about an ordinary girl, Bella, and a handsome vampire, Edward. The novel sales hit the one hundred million mark from its release. An... The Twilight Saga written by American novelist Stephenie Meyer, tells the love story about an ordinary girl, Bella, and a handsome vampire, Edward. The novel sales hit the one hundred million mark from its release. And its Chinese version also gains much popularity among Chinese readers. Up to now, fantasy novel and its translation have drawn increasing attention of scholars from home and abroad. This paper focuses on a fantasy novel which has never been analyzed from this perspective. The paper makes a comparison between the English and Chinese versions of the novel Twilight from the perspective of Halliday's three metafunctions, interpersonal function, ideational function and textual function, to give an in-depth study on the similarities and differences of two different languages and then put forward some beneficial suggestions for translators to understand and trans late fantasy novel comprehensively. 展开更多
关键词 twilight COMPARISON THREE METAFUNCTIONS FANTASY no
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Twilight:An Extraordinary Treasure of Gothic-postmodernism
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作者 张甜 《海外英语》 2010年第11X期422-423,共2页
In the current climate of literary experimentalism,'Gothic' may seem to some,an anachronistic term. Having spent most of the nineties as a buzz-word in literature and culture,its haunting presence appears to h... In the current climate of literary experimentalism,'Gothic' may seem to some,an anachronistic term. Having spent most of the nineties as a buzz-word in literature and culture,its haunting presence appears to have faded somewhat. With the end of TV serials such as Buffy the Vampire Slayer and Angel and the current lack of interest in the so-called Gothic images that used to inundate media and popular culture,the question arises yet again as to what significance the Gothic bears for contemporary literature?Importantly,what remains to be taken into account by such critics is the presence of fundamental Gothic elements in literary postmodernist texts. By this,I refer to works definable under the paradigm of postmodernism; experimental,radical and often metalfictional literature which problematises the relationship between reality and fiction,reader and text. The purpose of this article is to fill this gap in literary criticism by proposing a theoretical approach to postmodernist texts that are definitively Gothic. 展开更多
关键词 twilight GOTHIC POSTMODERNISM
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TWILIGHT
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作者 王炯 《音乐创作》 北大核心 2018年第4期37-46,共10页
关键词 VC twilight
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What Accounts for the Popularity of Twilight Saga——From the Perspective of Culture Studies
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作者 练勤 《海外英语》 2016年第7期161-164,共4页
The huge success of Twilight series and its adapted films is a blockbuster in the field of literature and film industry,attracting a great amount of audience and creating a box-office marvel.The book series also recei... The huge success of Twilight series and its adapted films is a blockbuster in the field of literature and film industry,attracting a great amount of audience and creating a box-office marvel.The book series also receives a wide attention from literary critics with analysis of different perspectives.This study aims to explore what accounts for Twilight's popularity with cultural studies,including aspects of teenage culture,masculinity,psychoanalysis,gender and sexuality.A comprehensive angel is provided to look at Twilight and its transformation to a classic. 展开更多
关键词 twilight POPULARITY CULTURE theories transformation CLASSIC
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The Effect of Sun Elevation on the Twilight Stages in Malaysia
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作者 Yasser Abdel-Fattah Abdel-Hadi Amir Hussein Hassan 《International Journal of Astronomy and Astrophysics》 2022年第1期7-29,共23页
This study is concerned with determining the altitude of the sun under the horizon to the beginning and the end of the true and pseudo dawn and dusk. In 2007 and 2008, the Sky Quality Meter (SQM) was used in four regi... This study is concerned with determining the altitude of the sun under the horizon to the beginning and the end of the true and pseudo dawn and dusk. In 2007 and 2008, the Sky Quality Meter (SQM) was used in four regions in Malaysia to measure the brightness at night, pseudo dawn, true dawn, true dusk and pseudo dusk. The measurements were taken when the device was directed to the position of sunrise and sunset at the horizontal angle of the sunrise or sunset and at five degrees above the horizon during the entire monitoring period. The altitude of the sun for the true dusk was found to be -14.38&deg;± 0.91&deg;and for the beginning of the pseudo dusk was found to be -14.86&deg;± 0.91&deg;and the end of the pseudo dusk is -17.8&deg;± 0.7&deg;, while for the beginning of the true dawn it was found to be -14.19&deg;± 0.52&deg;(for high confidence -14.71&deg;) and for the pseudo dawn was found to be -18.62&deg;± 0.82&deg;. The light magnitude of the full night after the pseudo dusk was found to be 20.77 ± 0.93 mag./arcsec<sup>2</sup>, while it was found to be 22.17 ± 0.1 mag./arcsec<sup>2</sup> before the pseudo dawn. 展开更多
关键词 twilight Light Magnitude Altitude of the Sun Beginning of the True Dusk Beginning of the True Dawn Pseudo Dusk Pseudo Dawn Full Night SQM
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The Magic Appeal: Fantasy Elements in the Twilight Series
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作者 WANG Hui 《Sino-US English Teaching》 2016年第3期219-224,共6页
The Twilight series by Stephanie Meyer, including Twilight, New Moon, Eclipse, and Breaking Dawn, has won multiple awards and is the most popular among young adults. The series is both an unbelievable romance of a 17-... The Twilight series by Stephanie Meyer, including Twilight, New Moon, Eclipse, and Breaking Dawn, has won multiple awards and is the most popular among young adults. The series is both an unbelievable romance of a 17-year-old girl and a 104-year-old vampire and an exquisite fantasy of the supernatural and impossible. Typical fantasy elements exploited in the series, including the existence of supernatural creatures, fulfillment of human desires, depiction of the Secondary World, and imagination of a Utopian society, play a significant role in achieving its magic appeal to the readers worldwide. Thus, the present paper attempts to explore how such irresistible attraction is made possible by employing these fantasy elements. 展开更多
关键词 the twilight series FANTASY the Secondary World UTOPIA
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Study on Features of Gregory Crewdson's Photography Works of Twilight Series --Gorgeous Desolation
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作者 KAN Qing 《International English Education Research》 2017年第5期14-16,共3页
Gregory Crewdson's photography works, full of personal features and American traditional features, exert important effects on contemporary photography, which is worthy of study and use for reference. The photography ... Gregory Crewdson's photography works, full of personal features and American traditional features, exert important effects on contemporary photography, which is worthy of study and use for reference. The photography works of Twilight series, the symbol of his creation to maturity, combine realism expression method and surrealism expression method and show the solitude and alienation of humanity in American society, revealing people's disassimilation tendency in post-modern society. This paper analyzes the works of Twilight series from the aspects of work creation way, psychological expression, and grotesque. 展开更多
关键词 Gregory Crewdson twilight PHOTOGRAPHY American art
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Lin Zhouta Enjoys Happy Twilight Life
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《China's Tibet》 1997年第3期25-25,共1页
关键词 In Lin Zhouta Enjoys Happy twilight Life
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太阳光与月光对曙暮光偏振模式的影响 被引量:9
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作者 崔岩 高启升 +1 位作者 褚金奎 陈辰 《光学精密工程》 EI CAS CSCD 北大核心 2013年第1期34-39,共6页
为研究曙暮光时分天空的偏振模式,确定了太阳光偏振模式与月光偏振模式在曙暮光时分天空偏振模式形成中所起的作用。首先基于Rayleigh散射理论,运用matlab对太阳光与月光的偏振模式进行仿真,分析二者的差异性;接着利用成像式全天空测试... 为研究曙暮光时分天空的偏振模式,确定了太阳光偏振模式与月光偏振模式在曙暮光时分天空偏振模式形成中所起的作用。首先基于Rayleigh散射理论,运用matlab对太阳光与月光的偏振模式进行仿真,分析二者的差异性;接着利用成像式全天空测试系统对曙暮光的偏振模式进行测试,获取了晴朗天气下曙暮光偏振模式分布图;最后将测试结果与太阳光和月光偏振模式分别进行对比,基于中性点位置、中性点数量和子午线方向确定了太阳光与月光对曙暮光偏振模式的影响。结果表明:曙暮光偏振模式测试分布图与太阳光偏振模式理论分布图更加接近,证明了太阳光偏振模式在曙暮光时分天空偏振模式的形成中起主要作用。 展开更多
关键词 曙暮光 偏振模式 成像式全天空测试 中性点 子午线
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直方图拟合和亮度判决自适应图像增强算法 被引量:3
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作者 范有臣 赵洪利 +2 位作者 孙华燕 郭惠超 赵延仲 《激光与红外》 CAS CSCD 北大核心 2015年第8期970-976,共7页
激光主动成像能够克服被动成像的缺点在低光照的条件下对目标成像,但是其图像通常受到严重干扰,需要采用增强算法增加图像的对比度和信噪比。不同时间段拍摄的激光图像存在很大差异,文中对夜间和晨昏成像的不同特点进行了探讨,分析归纳... 激光主动成像能够克服被动成像的缺点在低光照的条件下对目标成像,但是其图像通常受到严重干扰,需要采用增强算法增加图像的对比度和信噪比。不同时间段拍摄的激光图像存在很大差异,文中对夜间和晨昏成像的不同特点进行了探讨,分析归纳了其归类特点和方法,提出了一种基于直方图拟合和亮度判决的自适应激光图像同态增强算法,采用二次函数拟合直方图判定图像拍摄时间,通过亮度函数寻找最佳同态增强阈值,对不同时段拍摄的图像分类处理。实验结果表明,二次函数拟合直方图的判决方式准确率高,自适应同态增强算法能有效提高图像的信噪比,提高图像的对比度。 展开更多
关键词 激光主动成像 直方图 亮度 晨昏
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曙暮光在光敏感核不育水稻两个光周期反应中的作用 被引量:7
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作者 张自国 元生朝 《中国水稻科学》 CAS CSCD 北大核心 1989年第3期107-112,共6页
本文论证了曙暮光在光敏感核不育水稻两个光周期反应中均有明显的作用,初步探明农垦58S 在武汉地区(30°27′N)育性转换期(7—8月)曙暮光的变化规律,提出采用“光照长度”以代替“日照长度”来划分光周期的昼与夜更为准确的见解,据... 本文论证了曙暮光在光敏感核不育水稻两个光周期反应中均有明显的作用,初步探明农垦58S 在武汉地区(30°27′N)育性转换期(7—8月)曙暮光的变化规律,提出采用“光照长度”以代替“日照长度”来划分光周期的昼与夜更为准确的见解,据此讨论了曙暮光的作用对光敏感核不育水稻在不同地理条件下的生态适应性的重要影响。 展开更多
关键词 核不育 光周期反应 水稻 日照长度 光照长度 生态适应性 育性转换 光敏感 农垦58S 地理条件
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某型坦克驾驶模拟器视景软件设计与开发 被引量:6
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作者 郑长伟 刘永红 +1 位作者 苗壮 黄俊卿 《计算机仿真》 CSCD 2005年第11期263-266,共4页
使用仿真系统对坦克驾驶员进行驾驶训练,具有安全、无污染、不受天候限制、节约训练成本等诸多优点。AL-ZARRAR坦克驾驶训练模拟器是一个用于出口的、能完成驾驶模拟训练任务的仿真系统。其视景仿真程序采用Mu ltiGenC reato三维实体建... 使用仿真系统对坦克驾驶员进行驾驶训练,具有安全、无污染、不受天候限制、节约训练成本等诸多优点。AL-ZARRAR坦克驾驶训练模拟器是一个用于出口的、能完成驾驶模拟训练任务的仿真系统。其视景仿真程序采用Mu ltiGenC reato三维实体建模工具、OpenGVS4.5三维实时视景驱动引擎、D irectX 8.0的D irectSound3D声音播放控制程序,使用了六点地形匹配、微光夜视模拟、像素级光照模拟、伪粒子系统降雨模拟等先进技术,成功地营造出了一个交互性好、沉浸感强的虚拟驾驶环境。该软件已得到实际应用,效果良好。 展开更多
关键词 六点地形匹配 微光夜视 雨雾特效 像素级光照 伪粒子系统
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近地层大气气溶胶对曙暮光辐射强度和天空颜色的影响 被引量:2
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作者 范学花 陈洪滨 杜秉玉 《大气科学》 CSCD 北大核心 2004年第2期301-310,共10页
采用离散坐标法 (DISORT)辐射传输软件包UVSPEC的伪球面模式 ,计算了 30 0~ 85 0nm波段曙暮光时期地面不同观测仰角的辐射强度和天空颜色。模式选取美国标准大气 (U S 1 976) ,考虑多次散射效应及水汽、臭氧和二氧化碳的吸收。分析研... 采用离散坐标法 (DISORT)辐射传输软件包UVSPEC的伪球面模式 ,计算了 30 0~ 85 0nm波段曙暮光时期地面不同观测仰角的辐射强度和天空颜色。模式选取美国标准大气 (U S 1 976) ,考虑多次散射效应及水汽、臭氧和二氧化碳的吸收。分析研究了近地层大气不同气溶胶光学厚度时曙暮光天空辐射强度和颜色指数随太阳天顶角和观测仰角的变化。结果表明 ,曙暮光时天空的红蓝光颜色指数随近地层大气气溶胶光学厚度的变化显著。 展开更多
关键词 大气气溶胶 曙暮光 辐射强度 光学厚度 颜色指数 球面大气
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基于图像行相关空中目标实时检测算法 被引量:4
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作者 彭超 毛征 +1 位作者 郑利苹 陆天舒 《兵工自动化》 2012年第2期40-42,共3页
针对复杂背景中弱小目标的侦测问题,提出一种弱小目标去背景检测的新方法。通过对图像做灰度反转,根据图像相邻行之间的相关性做去除背景的预处理,并计算图像中灰度值最大的像素点,得到目标的位置坐标,并对实拍的空中弱小目标视频图像... 针对复杂背景中弱小目标的侦测问题,提出一种弱小目标去背景检测的新方法。通过对图像做灰度反转,根据图像相邻行之间的相关性做去除背景的预处理,并计算图像中灰度值最大的像素点,得到目标的位置坐标,并对实拍的空中弱小目标视频图像进行实验验证。实拍的视频图像证明:该方法可对弱小目标进行检测,且检测速度快、抗噪声干扰性能强。 展开更多
关键词 红外小目标检测 弱小目标检测 灰度值
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疯狂、暴力和死亡:福克纳短篇小说“干旱的九月”中隐喻的分析 被引量:16
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作者 梁晓冬 《外国文学研究》 CSSCI 北大核心 2006年第1期111-118,共8页
福克纳短篇小说“干旱的九月”在叙事方面的一个显著特征是隐喻性的叙事语言。本文以“干旱的九月”、“流言”、“血色黄昏”、“尘土”这些代表性的隐喻为焦点,将它们放在历史、神化、宗教的语境中,从语义、语用、审美等方面研究其内... 福克纳短篇小说“干旱的九月”在叙事方面的一个显著特征是隐喻性的叙事语言。本文以“干旱的九月”、“流言”、“血色黄昏”、“尘土”这些代表性的隐喻为焦点,将它们放在历史、神化、宗教的语境中,从语义、语用、审美等方面研究其内涵与作用。笔者认为,“干旱的九月”是“秋天”的具象,隐含着悲剧的原型意象;“流言”是《圣经》中所昭示的罪孽;“血色黄昏”预示着人们酒神般暴虐与疯狂,而“尘土”则象征着“罪与罚”及“死亡”。这些隐喻在语义上相互交叉,相互关联,紧密围绕着“疯狂、暴力、死亡”的主题,形成了巨大的语义网络,使主题表现更加深刻,富有内涵。从审美功能来看,这些隐喻简洁凝练、言简意赅,富有哲理,同时又委婉、生动,富有诗意。 展开更多
关键词 “干旱的九月” 隐喻 流言 血色黄昏 尘土
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眩光对海军飞行员暮视视觉工效的影响 被引量:8
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作者 时粉周 王珏 鲁毅钧 《海军医学杂志》 2007年第1期16-17,共2页
目的:探讨眩光对海军飞行员暮视视觉工效的影响。方法:在有或无眩光状态下,用视觉运动目标作业效能测试系统对28名海军飞行员进行暮视视觉工效测定,记录其辨认距离、辨认正确率和反应时。结果:在有眩光状态下,平均辨认距离缩短30%,正确... 目的:探讨眩光对海军飞行员暮视视觉工效的影响。方法:在有或无眩光状态下,用视觉运动目标作业效能测试系统对28名海军飞行员进行暮视视觉工效测定,记录其辨认距离、辨认正确率和反应时。结果:在有眩光状态下,平均辨认距离缩短30%,正确率下降20%,反应时延长7%,与无眩光状态下比较均有统计学意义(P<0.05)。结论:暮视时,眩光对海军飞行员视觉工效有明显影响,应采取适当的防眩光措施。 展开更多
关键词 飞行员 视觉工效 眩光 暮视
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法国阿尔卑斯—罗讷(Rhone-Alps)岩溶洞穴弱光带苔藓植物群落研究 被引量:11
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作者 张朝晖 艾伦.培特客斯 《中国岩溶》 CAS CSCD 2001年第3期236-240,共5页
报道了法国阿尔卑斯 -罗讷 (Rhone- Alps)地区 3个岩溶洞穴苔藓植物群落研究结果。记载典型洞穴苔藓群落 11个 ,苔藓植物种类 8科 12属 15种 (含变种 ) ;区系地理成分含北温带分布 (4 6 .6 6 % )、温带欧洲分布 (6 .6 7% )、欧洲 -亚洲... 报道了法国阿尔卑斯 -罗讷 (Rhone- Alps)地区 3个岩溶洞穴苔藓植物群落研究结果。记载典型洞穴苔藓群落 11个 ,苔藓植物种类 8科 12属 15种 (含变种 ) ;区系地理成分含北温带分布 (4 6 .6 6 % )、温带欧洲分布 (6 .6 7% )、欧洲 -亚洲分布 (6 .6 7% )、欧洲 -北美分布 (13.33% )和世界广泛分布 (2 6 .6 7% ) 5种成分 ;生活型含高丛集型 (2 0 % )、矮丛集型 (33.33% )、交织型 (4 0 % )和平铺型 (6 .6 7% ) 4种类型。根据岩溶沉积环境特征 ,划分洞穴苔藓群落为钟乳石苔藓群落、洞壁钙华苔藓群落、洞底泉华苔藓群落和石灰土苔藓群落等 4种生态类型。 展开更多
关键词 岩溶 洞穴 苔藓植物群落 弱光带 法国 阿尔卑斯-罗讷地区 自然地理
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