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Science China(Technological Sciences) 2022年第3期65卷 541-552页

作者： WU Jun SONG YuYao liu zilin LI GuoFa State Key Laboratory of Tribology and Institute of Manufacturing Engineering Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipment and Control Beijing 100084China Key Laboratory of CNC Equipment Reliability Ministry of EducationJilin UniversityChangchun 130022China

Due to the discrete feature and performance limitation of the numerical controller,the control period sometimes cannot meet the constraints of the scaled model in similitude analysis,which brings the control period mismatch *** traditional similitude analysis methods are not able to solve this problem since the controller is treated as continuous system in these *** paper proposes a modified similitude analysis method to solve the control period mismatch problem,and the electro-mechanical performances of a 2-DOF parallel manipulator is *** on the model of dynamic and control system,most of the similitude laws are derived by taking the controller as continuous *** the transfer function of the controller in discrete form is established,and the similitude law related to control period is derived to figure out the cause of mismatch *** modified method,named long period equivalent,is proposed to solve the mismatch problem by using the least square method and superposition ***,the scaled model of the parallel manipulator is determined based on the modified similitude analysis method.

关键词： similitude analysis control period mismatch parallel manipulator electro-mechanical performance discrete system

The patterns of distribution of chlorophyll a and primary production in coastal upwelling area off Zhejiang

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海洋学报(英文版) 1988年第1期7卷 126-136页

作者： Ning Xiuren and liu zilin China

-Investigations of Chi, a and primary production were carried out in the coastal upwelling area (27°’-30°30’N, west to 124°00’E) off Zhejiang in August and October 1981. The high-value areas of Chl. a were in nearshore waters and on top of the upwelling front, where Chl. a occurred the maximum 7.40 mg/m3. With the average of 1.25 g C/m2.d, the primary production was more than 2.0gC/m2·d incenteral area of the upwelling, and the whole surveyed area’s output was about 4.4 ×104 tons C/d.

关键词： chlorophyll coastal surveyed salinity waters productivity varied Photosyn photosynthetic nutrients

Distribution　characteristics　of　size-fractionated　chlorophyll　a　and　primary　productivity　in　Beibu　Gu

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Acta Oceanologica Sinica 1998年第1期17卷 71-83页

作者： zilin, liu Yuming, Cai Xiuren, Ning Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China

Ｄｉｓｔｒｉｂｕｔｉｏｎｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｓｉｚｅ－ｆｒａｃｔｉｏｎａｔｅｄｃｈｌｏｒｏｐｈｙｌｌａａｎｄｐｒｉｍａｒｙｐｒｏｄｕｃｔｉｖｉｔｙｉｎＢｅｉｂｕＧｕｌｆＬｉｕＺｉｌｉｎ，ＣａｉＹｕｍｉｎ... 详细信息

Ｄｉｓｔｒｉｂｕｔｉｏｎｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｓｉｚｅ－ｆｒａｃｔｉｏｎａｔｅｄｃｈｌｏｒｏｐｈｙｌｌａａｎｄｐｒｉｍａｒｙｐｒｏｄｕｃｔｉｖｉｔｙｉｎＢｅｉｂｕＧｕｌｆＬｉｕＺｉｌｉｎ，ＣａｉＹｕｍｉｎｇ，ＮｉｎｇＸｉｕｒｅｎ（Ｒｅｃｅ...

关键词： productivity characteristics size-fractionated Beibu

Development of metal-recycling technology in waste crystalline-silicon solar cells

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Clean Energy 2023年第3期7卷 532-546页

作者： Dehai Lin zilin liu Xiaoduan Li Zixiong Cao Rihua Xiong National Institute of Clean and Low Carbon Energy 102211BeijingChina College of Chemical Engineering Zhengzhou University450001HenanChina

Solar energy is currently one of the most promising clean energy sources and the use of solar energy has led to a rapid increase in the number of solar *** one of the fastest-growing electronic wastes,the resource treatment of solar cells at the end of their life should not be *** review discusses the trend for the market development of crystalline-silicon solar cells and analyzes their physical structure and *** also discusses the current domestic and international recycling technologies for crystalline-silicon solar cells,including manual dismantling,inorganic acid dissolution,the combination of heat-treatment and chemical methods,and organic solvent *** shortcomings of the above treatment methods are discussed and some views on the recycling of waste crystalline-silicon solar cells are *** suggestions for the green and sustainable development of crystalline-silicon solar cells are put forward by comparing different treatment-recycling processes.

关键词： waste solar cells crystalline silicon metal recycling dismantling

The size-fractionated chlorophyll a and primary productivity in the Bering Sea during the summer of 2003

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Acta Oceanologica Sinica 2005年第6期24卷 127-134页

作者： liu zilin CHEN Jianfang CHEN Zhongyuan ZHANG Tao ZHANG Haisheng Key Laboratory of Marine Ecosystem and Biogeochemistry State Oceanic AdministrationHangzhou 310012China Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography State Oceanic AdministrationHangzhou 310012China

Investigations of chlorophyll a and primary productivity were carried out inthe Bering Sea along the BR line and the BS line during the Second Chinese National Arctic ResearchExpedition in the summer of *** results showed that the surface chlorophyll a concentrationswere 0.199~1.170μg/dm^(3),and the average value was 0.723μg/dm^(3) on the BR *** the BSline,the surface chlorophyll a concentrations were 0.519~4.644μg/dm^(3)(average 1.605μg/dm^(3))and 0.568~14.968μg/dm^(3)(average 5.311μg/dm^(3))during the early and late summer,*** average value in the late summer was much higher than that in the early *** high values(more than 4.0μg/dm^(3))occurred at stations of the BS line in the southern Bering *** a concentrations in the subsurface layer were higher than those in the surface *** results of the size-fractionated chlorophyll a showed that the contribution of the picoplanktonto total chlorophyll a was the predominance at the early summer and the contribution of thenetplankton was the predominance at the late *** carbon potential primary productivitiesvaried between 0.471 and 1.147 mg/(m^(3)·h)on the BR line,with average rates of 0.728 mg/(m^(3)·h).The primary productivities on the BS line were much higher than those of the BR line,ranging from1.227 mg/(m^(3)·h)at the early summer to 19.046 mg/(m^(3)·h)at the late *** results of thesize-fractionated primary productivity showed that the contribution of the nanoplankton to totalproductivity was the predominance at the early summer and the contribution of the netplankton waspredominance at the late *** assimilation number of photosynthesis was 0.45~2.80 mg/(mg·h)in the surveyed stations.

关键词： chlorophyll a primary productivity the size-fractionated bering sea

Reassessment of the Distribution of Mantle CO_(2) in the Bohai Sea,China:The Perspective from the Source and Pathway System

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 337-347页

作者： TANG Huafeng GUO Tianchan WU Keqiang liu zilin XU Jianyong LU Baoliang WANG Pujun Key Laboratory for Evolution of Past Life and Environment in Northeast Asia Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural ResourcesChangchun 130061China College of Earth Sciences Jilin UniversityChangchun 130061China CNOOC Research Institute Beijing 100028China Institute of Gravity and Magnetic Technology Chang’an UniversityXi’an 710054China

Research on the distribution of mantle CO_(2)should involve comprehensive analysis from CO_(2)source to *** crust-mantle pathway system is the key controlling factor of the distribution of mantle CO_(2),but has received little *** pathway system and controlling factors of CO_(2)distribution in the Bohai Sea are analyzed using data on fault styles and information on the mantle and *** relation between volcanic rocks and the distribution of mantle CO_(2)is reassessed using age data for CO_(2)*** distribution of mantle CO_(2)is controlled by uplift of the asthenosphere and upper mantle,magma conduits in the mantle and fault systems in the *** regions of the asthenosphere are accumulation areas for CO_(2).The area with uplift of the Moho exhibits accumulation of mantle CO_(2)at ***_(2)was mainly derived from vertical migration through the upper mantle and lower *** fault style in the upper crust controls the distance of horizontal migration and the locations of CO_(2)*** distribution of mantle CO_(2)and volcanic rocks are not the same,but both probably followed the same pathways *** CO_(2)in the Bohai Sea is concentrated in the Bozhong sag and the surrounding area,particularly in a trap that formed before 5.1 Ma and is connected to crustal faults(the Bozhang faults)and lithospheric faults(the Tanlu faults).

关键词： mantle CO_(2) source area pathway system fault Moho Bohai Sea

Standing stock of phytoplankton and primary productivity in Penaeus orientalis larval multiplication releasing area of the Xiangshan Bay

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Acta Oceanologica Sinica 2000年第1期19卷 109-118页

作者： liu zilin Cai Yuming Shi Junxiang Ning Xiuren (1. Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China) Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China

The standing stock of phytoplankton (phy. ) and primary productivity (pp) in the Xiangshan Bay were observed in 1992. The results showed higher biological parameters in the bay. The average chlorophyll a (chl a) concentration was (3. 50 5. 93 ) mg/m3 and the primary productivity (444. 5 871. 0) mg/(m2 d). The distribution of chl a and productivity showed distinct spatial and temporal patterns in the bay. The continent influence was Obvious at the top of the bay, lower seawater exchange and higher stability led to higher standing stock of phytoplankton and productivity. At the bay mouth, seawater exchanged continuously with adjacent waters by rapid currents, resulting in fast and unstable exchange and lower standing stock of phytoplankton and primary productivity. The seasonal characters of those parameters were pronounced, in the sequence of spring, summer, autumn and winter. The results of size--fractionated showed that the average contribution of the nano--and picoplankton (< 20pm) to total chl a and productivity were 75 % and 87%, respectively, indicating their importance in phytoplankton community biomass and productivity of the Xiangshan Bay.

关键词： Standing stock phytoplankton chl a primary productivity size-fractionated Xiangshan

Particle Kinematics Analysis of Droplet Drift in Spraying Operation of Plant Protection UAV

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Plant Diseases and Pests 2022年第2期13卷 17-20,23页

作者： Xiong ZOU Rangshu XU Jingchun LI zilin liu Liaoning Key Laboratory of Advanced Measurement and Test Technology for Aircraft Propulsion Systems Shenyang Aerospace UniversityShenyang 110136China

[Objectives]The paper was to study the effect of droplet drift on spray quality of plant protection UAV.[Methods]Based on the theory of multiphase flow and the method of particle kinematics,the force and motion trajectory of droplet sprayed by plant protection UAV were theoretically analyzed and mathematically *** the basis of the assumption of wind speed in the ground layer and the laminar sublayer,that is,it is assumed that the wind speed in the area of wind measurement was approximately a linear distribution,the coupling iterative solution of the equations was carried *** influence of droplet diameter,flight height,flight speed of plant protection UAV,course angle,wind speed,wind direction,initial droplet velocity and direction of initial velocity on droplet drift were *** influence of the coupling effect of each factor on droplet drift was further discussed and the distribution of droplet drift concentration was obtained.[Results]The wind speed and direction had much influence on the drift distance of droplets,and the drift distance and the initial velocity angle show a quadratic function *** the given conditions,the drift distance was the closest when the initial velocity angle was about 20°.The droplet drift was mainly distributed scatteredly around the nozzle.[Conclusions]The study provides a reference for improving the spraying quality of plant protection UAV.

关键词： Plant protection UAV Droplet drift Particle kinematics Concentration distribution Coupling

媒介融合视阈下短视频对突发事件新闻效果的影响研究

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电影评介 2020年第10期 103-106页

作者：刘姿麟贵州师范学院文学与传媒学院

年末岁初的新冠肺炎疫情是新中国成立以来传播速度最快、感染范围最广、防控难度最大的重大突发公共卫生事件。此次疫情的暴发具有极强的突发性、偶然性和影响力,严重威胁到了中国人民的生命安全和国家的经济发展,关系到整个民族的安危... 详细信息

年末岁初的新冠肺炎疫情是新中国成立以来传播速度最快、感染范围最广、防控难度最大的重大突发公共卫生事件。此次疫情的暴发具有极强的突发性、偶然性和影响力,严重威胁到了中国人民的生命安全和国家的经济发展,关系到整个民族的安危。而且,这次疫情和1998年抗洪、2008年汶川地震和北京奥运会等有很大的不同。与它们相比,此次疫情持续的时间更长,影响的人数更多,发生的范围更广,所以它对宣传动员的要求也更高、更深入。

关键词：感染范围传播速度突发事件新闻北京奥运会疫情短视频宣传动员媒介融合

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以美塑人:中小学教学体系中的影视育人研究

电影评介 2020年第14期 97-100页

作者：刘姿麟贵州师范学院文学与传媒学院

随着信息技术的不断变革,信息接收终端越发多元化,社会大众逐渐适应在不同平台接收各种形态的媒体内容,比如文字、图片、视频等。在融媒体时代,促使人类获取信息的方式和对社会的认知伴随着新媒体的广泛普及发生了巨大变化。科技的高速... 详细信息

随着信息技术的不断变革,信息接收终端越发多元化,社会大众逐渐适应在不同平台接收各种形态的媒体内容,比如文字、图片、视频等。在融媒体时代,促使人类获取信息的方式和对社会的认知伴随着新媒体的广泛普及发生了巨大变化。科技的高速发展催生了移动互联网时代,丰富了信息的传播渠道和传播内容,信息的传播变得空前迅速,文字语言的传播时代逐渐转变为视听语言时代。

关键词：中小学教学融媒体时代传播时代信息技术传播内容接收终端视听语言传播渠道