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输毛管中流场状态对纤维丝束开松处理效果的影响
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作者 王进 程贺棚 +4 位作者 李帅 卢贺 崔永志 千翠娥 于贺春 《现代纺织技术》 北大核心 2024年第3期29-37,共9页
纤维输毛管的设计对粘胶纤维或Lyocell短纤维丝束的开松效果至关重要。为了探究纤维丝束在输毛管中的开松机理以及管道内流场状态对纤维运动状态的影响,采用三维建模软件建立输毛管流场模型,在商用软件Cradle CFD中建立纤维丝束模型结... 纤维输毛管的设计对粘胶纤维或Lyocell短纤维丝束的开松效果至关重要。为了探究纤维丝束在输毛管中的开松机理以及管道内流场状态对纤维运动状态的影响,采用三维建模软件建立输毛管流场模型,在商用软件Cradle CFD中建立纤维丝束模型结合流场进行耦合计算,研究分析了2000根长度为38 mm纤维丝束在输毛管中的运动过程。结果表明:在输毛管中纤维丝束受到流场作用的差异形成了纤维丝束运动的速度差,这是纤维丝束开松的主要原因;输毛管的竖直圆形管道处存在较大的压力梯度,使纤维丝束整体受到压力差异,也为纤维开松创造条件;输毛管的锥型管位置处的速度场较复杂,有利于纤维丝束开松;管径的变化导致产生漩涡,阻碍了纤维的输送。研究结果可为化纤与纺织行业输毛管设计提供参考。 展开更多
关键词 输毛管 流场模型 Cradle CFD 纤维丝束 开松
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A Cradle-to-Cradle Novel Approach for Wastewater Management in Sustainable Urban Communities
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作者 Mianda Khattab Salah El Haggar Ahmed El Gendy 《Journal of Environmental Protection》 CAS 2023年第3期163-171,共9页
Water, a valuable resource to human lives, is being abused and driven to scarcity. This scarcity is leading some countries and areas to face difficulty in accessing drinking water. As the UN recently stated “by 2050 ... Water, a valuable resource to human lives, is being abused and driven to scarcity. This scarcity is leading some countries and areas to face difficulty in accessing drinking water. As the UN recently stated “by 2050 water shortages and harder access will be reached by around 2/3<sup>rd</sup> of the world total population” [1], thus, there is a high need to treat and reuse wastewater for domestic purposes, which will lead to less reliance on fresh water as an initial water source. Greywater—defined as the water produced in domestic houses including sinks and bathroom showers, and excluding any blackwater mix which is collected from toilets—is a type of wastewater. Greywater accounts for up to 75% of the daily water produced [2] while it has fewer contaminants when compared to blackwater. This makes greywater a focal point for treatment, and reusing to conserve fresh water and approach net zero water concept. Even though the definition of greywater is the same globally, its criteria can differ from one country to another, from one building to another, or even from the same person’s usage along the day. Accordingly, several treatment methods evolved over years aiming at treating the produced greywater for reuse mainly in irrigation and toilet flushing. The objective of this paper is to demonstrate a novel net zero wastewater approach applying cradle-to-cradle concept for urban communities;while also proposing a sustainable greywater treatment technique that is environmentally friendly, cost-effective and socially acceptable. 展开更多
关键词 Net Zero Water Sustainable Urban Communities Cradle to Cradle for Wastewater Management Sustainable Greywater Treatment
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Comparative multi-locus assessment of modern Asian newts(Cynops, Paramesotriton, and Pachytriton:Salamandridae) in southern China suggests a shared biogeographic history 被引量:1
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作者 Zhi-Yong Yuan Yun-Ke Wu +5 位作者 Fang Yan Robert W.Murphy Theodore J.Papenfuss David B.Wake Ya-Ping Zhang Jing Che 《Zoological Research》 SCIE CAS CSCD 2022年第5期706-718,共13页
Evolutionary biologists are always interested in deciphering the geographic context of diversification,therefore they introduced the concept of comparative phylogeography, which helps to identify common mechanisms tha... Evolutionary biologists are always interested in deciphering the geographic context of diversification,therefore they introduced the concept of comparative phylogeography, which helps to identify common mechanisms that contribute to shared genetic structures among organisms from the same region.Here, we used multi-locus genetic data along with environmental data to investigate shared phylogeographic patterns among three Asianendemic newt genera, Cynops, Paramesotriton and Pachytriton, which occurred in montane/submontane streams or ponds in southern China. Our 222samples from 78 localities covered the entire range of the three genera and represented the largest dataset of this group to date. We reconstructed matrilineal genealogies from two protein-coding,mitochondrial genes, and gene network from two nuclear genes. We also estimated divergence times of major cladogenetic events and used occurrence data to evaluate niche difference and similarity between lineages. Our results revealed a common basal split in all three genera that corresponds to the separation of two geographic terrains of southern China.Those ancient divergence occurred during middle to late Miocene and likely correlate with paleoclimatic fluctuations caused by the uplift of the Qinghai-Xizang (Tibet) Plateau (QTP).Particularly,the strengthening and weakening of Asian summer monsoons during the Miocene may have profoundly impacted southern China and led to repeatedly vicariance in those newts.However,despite differences in realized niches between lineages,there is no evidence for divergence of fundamental niches.Preservation of old newt matriline lineages in mountains of southern China suggests that the region acts as both museums and cradles of speciation.Based on those results,we advocate a multi-pronged protection strategy for newts in the three genera. 展开更多
关键词 AMPHIBIAN Comparative phylogeography Qinghai-Xizang(Tibet)Plateau East Asian monsoons Ecological niche modeling Species museums and cradles
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Life on Earth Originated Where Later Microbial Oxygenic Photosynthesis Precipitated Banded Iron Formation, Suppressing Life Diversification for 1.4 Ga
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作者 Zeev Lewy 《International Journal of Geosciences》 2013年第10期1382-1391,共10页
The earliest Precambrian microbial structures appear in successions with banded iron formations (BIF) suggesting genetic relationships. The hypothesis of the deep ocean origin of BIFs associated with Mid-Ocean Ridge (... The earliest Precambrian microbial structures appear in successions with banded iron formations (BIF) suggesting genetic relationships. The hypothesis of the deep ocean origin of BIFs associated with Mid-Ocean Ridge (MOR) like features seems to have been recently supported by the discovery of peculiar microbial ecosystems with unique faunal assemblages restricted to these volcanic vents. However, new sedimentological evidence points to the accumulation of varved BIF in huge, very shallow lakes of hydrothermal-water situated on continental plates while passing through thePolar Regions, where UV radiation is minimal. The mineral-rich solutions seeped from numerous fumaroles, providing suitable conditions for chemical reactions between inorganic components, incidentally creating organic-like self-multiplying molecules long before the biologically-initiated BIF deposition. Some of these early chemoautotrophic prokaryotes developed oxygenic photosynthesis during half a year of solar illumination. The released oxygen formed iron oxides and carbonates deposited with amorphous silica (geyserite) in laminae as BIF during 3.8 - 1.9 Ga. BIF deposition consumed most of the photosynthetic oxygen for 1.4 billion years. Intensified cyanobacteria oxygenic photosynthesis during 2.4 - 2.2 Ga raised the atmospheric oxygen content (Great Oxidation Event) over the Polar Regions, forming an oxygen-ozone shield against UV radiation. It gradually extended to lower latitudes, enabling prokaryotes to leave their ecologically stable habitat and acclimatize in new ecosystems, where they diversified, leading to eukaryote evolution. The 231/2° inclination of Earth’s rotation axis differentiated the solar effect on the Polar Regions, which controlled life evolution on Earth, as well as on planet Mars (25° inclination), where life probably did not evolve beyond early prokaryotes. 展开更多
关键词 Early PRECAMBRIAN EARTH LIFE cradles Banded Iron Formation (BIF) 1.4 GA Suppressed LIFE DIVERSIFICATION LIFE on Mars
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嵌入式eCos系统下实时媒体服务器的设计与实现
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作者 叶锦洋 朱秀昌 《电视技术》 北大核心 2004年第9期78-80,共3页
在CradleRDS3400平台上进行了嵌入式媒体服务器的设计与实现。介绍了实现平台及嵌入式eCos系统,阐述了系统的整体框架、各个功能模块及实现结果。
关键词 CRADLE RDS3400 媒体服务器 嵌入式eCos H.264 视频通信
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嵌入式eCos系统下HTTP协议的设计及Web服务器实现
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作者 叶锦洋 王建 《微型机与应用》 北大核心 2005年第2期27-28,33,共3页
介绍了嵌入式实时操作系统eCos,分析了HTTP协议文档,结合嵌入式操作系统的特点提出了HTTP协议的简单实现方案,并在Cradle平台上实现了Web服务器。
关键词 多处理器平台 CRADLE RDS3400 HTTP协议 eCos系统 嵌入式WEB服务器 实时操作系统
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Gordon Life Science Institute and Its Impacts on Computational Biology and Drug Development 被引量:2
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作者 Kuo-Chen Chou 《Natural Science》 2020年第3期125-161,共37页
Gordon Life Science Institute is the first Internet Research Institute ever established in the world. It is a non-profit institute. Those scientists who really dedicate themselves to science and loving science more th... Gordon Life Science Institute is the first Internet Research Institute ever established in the world. It is a non-profit institute. Those scientists who really dedicate themselves to science and loving science more than anything else can become its member. In the friendly door-opened Institute, they can maximize their time and energy to engage in their scientific creativity. They have also believed that science would be more truthful and wonderful if scientists do not have to spend a lot of time on funding application, and that great scientific findings and creations in history were often made by those who were least supported or funded but driven by interesting imagination and curiosity. Recollected in this review article is its establishing and developing processes, as well as its philosophy and accomplishments. Particularly, its productive and by-productive outcomes have covered the following five very hot topics in bioinformatics and drug development: 1) PseAAC and PseKNC;2) Disported key theory;3) Wenxiang diagram;4) Multi-label system prediction;5) 5-steps rule. Their impacts on the proteomics and genomics as well as drug development are substantially and awesome. 展开更多
关键词 BIOINFORMATICS Drug Development Reform And OPENING Free Communication Sweden CRADLE San Diego BOSTON Door-Opening Productive and Bi-Productive Outcomes
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Proposing 5-Steps Rule Is a Notable Milestone for Studying Molecular Biology 被引量:1
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作者 Kuo-Chen Chou 《Natural Science》 2020年第3期74-79,共6页
In this current minireview, the cradle of the “5-steps rule” or “5-step rules”, along with its essence and advances, has been recalled. Born in 2011, its impacts on molecular biology are both substantial and rapid... In this current minireview, the cradle of the “5-steps rule” or “5-step rules”, along with its essence and advances, has been recalled. Born in 2011, its impacts on molecular biology are both substantial and rapid, fully indicating the “5-steps rule” is no double a remarkable and profound milestone in molecular biology. 展开更多
关键词 5-Steps RULE CRADLE Global and Local Metrics MULTI-LABEL System Web-Server
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The Development of Gordon Life Science Institute: Its Driving Force and Accomplishments 被引量:1
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作者 Kuo-Chen Chou 《Natural Science》 2020年第4期202-217,共16页
Established in 2004, Gordon Life Science Institute is the first Internet Research Institute in the world. It is a non-profit institute, a gift to science. Those scientists, who are really loving science more than anyt... Established in 2004, Gordon Life Science Institute is the first Internet Research Institute in the world. It is a non-profit institute, a gift to science. Those scientists, who are really loving science more than anything else and have shown fantastic creativity in science, can become the membership of such Institute. Their driving force is not funding but firmly belief that scientists will do much better science if they do not have to spend a lot of time for funding application, and that great scientific findings in history were often discovered by those who were without funding at all but driven by profound imagination and curiosity. Summarized in this review are also the accomplishments of the Gordon Life Science Institute and its future perspective. 展开更多
关键词 Sweden CRADLE San Diego BOSTON PseAAC and PseKNC Disported Key Theory Wenxiang Diagram Mul-ti-Label System Prediction 5-Steps Rule
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Design of Automatic Baby Nursing Trolley based on Intelligent Sensing Technology 被引量:1
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作者 Chen Guoqing 《International Journal of Technology Management》 2014年第8期73-75,共3页
This paper study and solve the design and manufacture of baby care car, its unique function is the baby carriage can be used as a baby bed, when necessary, it can also become a nursing car, sensor in the vehicle can b... This paper study and solve the design and manufacture of baby care car, its unique function is the baby carriage can be used as a baby bed, when necessary, it can also become a nursing car, sensor in the vehicle can be real-time detected whether the baby bed wetting and induction time will give parents information feedback; the humidity sensing probe controlled by single chip microcomputer and with the bottle clamp flexible connecting rod, can realize the baby auxiliary nurse; remote wireless commtmication system can allow parents to monitor children' s state. The design of intelligent baby carriage, to enhance the technological content of products, promote the innovation of design China bassinet production, has the important practical significance to seize the smart baby car market. 展开更多
关键词 RFID Automatic baby cradle DC motor speed control Voice control
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西卡新一代Sarnafil■AT防水卷材创新特点及其应用 被引量:1
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作者 卢嫔婷 《中国建筑防水》 2022年第10期27-29,62,共4页
西卡新一代创新型高分子防水产品Sarnafil■AT防水卷材,是一款由专利混合技术生产的改性TPO防水卷材,其综合了常规屋面用高分子卷材的各大优势,施工便捷、柔软弹性、绿色环保,施工过程中的可靠性以及屋面整体防水系统的安全性也大大提高... 西卡新一代创新型高分子防水产品Sarnafil■AT防水卷材,是一款由专利混合技术生产的改性TPO防水卷材,其综合了常规屋面用高分子卷材的各大优势,施工便捷、柔软弹性、绿色环保,施工过程中的可靠性以及屋面整体防水系统的安全性也大大提高,是市场上首个通过Cradle to Cradle^(TM)认证的热塑性防水产品。 展开更多
关键词 改性TPO防水卷材 机械固定 可焊接性 柔韧性 循环利用 Cradle to CradleTM认证
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Integration of the “Cradle of Oil” and the “Belt and Road” to Forge a Brand Supporting the Chad Project
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作者 Yu Zhuangzai 《China Oil & Gas》 CAS 2018年第6期20-24,共5页
Resplendence of the “cradle of oil”Yumen Oilfield,developed in 1939,is the first natural oil base in China.The current Yumen Oilfield is a regional branch of China National Petroleum Corporation (CNPC).It is a state... Resplendence of the “cradle of oil”Yumen Oilfield,developed in 1939,is the first natural oil base in China.The current Yumen Oilfield is a regional branch of China National Petroleum Corporation (CNPC).It is a state-owned enterprise integrating exploration and development,oil refining and chemical engineering,and engineering technology and mining services.During the war of “a drop of oil,a drop of blood”,oil products produced in oil fields provided practical support for the War of Resistance Against Japan.In the decade before liberation,only 520,000 tons of crude oil were produced in Yumen Oilfield,but it accounted for 95% of crude oil output in China at that time. 展开更多
关键词 INTEGRATION CRADLE of OIL BELT and ROAD
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SEPW-the Cradle of Surge Arresters and Fuses in China
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作者 Wang YongliangShanghai Electric Porcelain Works 《Electricity》 1996年第1期40-43,共4页
Shanghai Electric Porcelain Works (SEPW), a subsidiary enterprise of the SEC (Group), is specialized in manufacturing highvoltage surge arresters and fuses as main products, as well as some high-voltage insulators, wa... Shanghai Electric Porcelain Works (SEPW), a subsidiary enterprise of the SEC (Group), is specialized in manufacturing highvoltage surge arresters and fuses as main products, as well as some high-voltage insulators, wall bushings and disconnecting switches for power transmission & distribution systems. In fact, SEPW is 展开更多
关键词 MOA SEPW-the Cradle of Surge Arresters and Fuses in China HIGH SIC
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The Cradle of China’s Drama Talents─A Brief Introduction to the Central Drama Institute in China
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《China & The World Cultural Exchange》 1995年第6期38-39,共2页
关键词 In The Cradle of China’s Drama Talents A Brief Introduction to the Central Drama Institute in China
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A Cradle of Artists─—Introducing the Beijing Opera School
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《China & The World Cultural Exchange》 1997年第1期24-25,共2页
关键词 Introducing the Beijing Opera School A Cradle of Artists
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Chinese Opera Institute: Cradle of Traditional Theatrical Performers
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《China & The World Cultural Exchange》 1996年第4期20-23,共4页
关键词 Chinese Opera Institute Cradle of Traditional Theatrical Performers
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The Golden Cradle
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《China Today》 1998年第1期56-58,共3页
TheGoldenCradleByStaffReporterSUNLINAWhenachildlessthenthreeyearsofagecanreciteancientpoetry,quotepopularidi... TheGoldenCradleByStaffReporterSUNLINAWhenachildlessthenthreeyearsofagecanreciteancientpoetry,quotepopularidioms,andwriteChine... 展开更多
关键词 GOLDEN CRADLE The
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Changyang,Cradle of the Tujia People
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《China Today》 2002年第12期2-3,共2页
Changyang Tujia Autonomous County in western Hubei Province is an area of mountains and waters, most notably the 400-km Qingjiang River that traverses it from east to west. According to historical documents, Wuluo Zho... Changyang Tujia Autonomous County in western Hubei Province is an area of mountains and waters, most notably the 400-km Qingjiang River that traverses it from east to west. According to historical documents, Wuluo Zhongli Mountain, 30 kilometers southwest of the county seat, is where the Ba people, ancestors of China s Tujia ethnic minority, originated. It is believed that Linjun, the Tujia primogenitor, was born in the mountain s Red Cave. Surrounded by water on three sides, the mountain has five steep peaks, the highest 384 meters above sea level, and is densely covered by verdant forest. A visit to the county is a must for anyone interested in the history of the Ba people. 展开更多
关键词 Changyang Cradle of the Tujia People
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The Cradle of China's First Class Seafarers:Qingdao Ocean Shipping Mariners College——by Lin Jinhe,President of Qingdao Ocean Shipping Mariners College
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《中国远洋航务》 1998年第11期18-19,共2页
Qingdao Ocean Shipping Mariners College is a College subordinate to China Ocean Shipping (Group) Company under the Ministry of Communications. In our college there are the Department of Marine Navigation,Department of... Qingdao Ocean Shipping Mariners College is a College subordinate to China Ocean Shipping (Group) Company under the Ministry of Communications. In our college there are the Department of Marine Navigation,Department of Marine Engineering, Department of Shipping Management and Department of Foreign Languages, offering speciahies of Marine Navigation, Marine Engine Control, Marine Electrical Equipment Control, Marine Radio Communication, International Shipping Management and International Finance and Accounting. We have 3 types of education: the education of formal college schooling, the training for implementation of the 95 revised STCW Convention and the continuation education. Meanwhile we undertake different training of COSCO’s contracted seafarers overseas and other managerial per- 展开更多
关键词 by Lin Jinhe President of Qingdao Ocean Shipping Mariners College The Cradle of China’s First Class Seafarers
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The Cradle of Tibetan Cadres
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作者 CEWANGJIGMEI 《China Today》 1998年第9期27-29,共3页
关键词 The Cradle of Tibetan Cadres
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