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Seabed scene simulation and its realization in extending Vega

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Journal of Marine Science and Application 2003年第2期2卷 40-45页

作者： zhi-ming song Feng-ju Kang Kai Tang and Yan-jun Chu Marine College Northwestern Polytechnical University Xi’an China

Realistic simulation of underwater scene is always difficult because of the special and complex vision effects in underwater space. Seabed is an important part of underwater environment. This paper describes the methods for seabed scene simulation based on OpenGL. It includes construction of fluctuant terrain based on the random sinusoidal algorithm, simulation of seabed flicker effect by means of circular texture mapping and generation of turbidity effect by using fog techniques. For the application based on the leading high level 3D development environment - Vega, underwater scene simulation is still a difficulty since there is no module for it. Rased on the analysis of Vega software and the research on seabed scene simulation methods, a Vega extending module named 'Underwater Space' was created through developing module class and extending lynx interface. The module class was designed through developing DLL written in C + + . The Lynx was extended through developing keyword configure file, GUI configure file and lynx plug-in DLL. The problem that Vega can't simulate underwater space, is elementarily resolved. The results show that this module is efficient, easy using, and the seabed scene images are vivid.

关键词： scene simulation seabed OpenGL Vega module circular texture fog flicker turbidity

A Huge Congenital Left Atrial Appendage Aneurysm

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Chinese Medical Journal 2017年第24期130卷 3011-3012页

作者： He-Qing Wang Zhe Zhang Hang Yang song Wu Yuan-Hao Fu zhi-ming song Feng Wan Department of Cardiac Surgery Peking University Third Hospital Beijing 100191 China

Left atrial appendage aneurysm （LAAA） is an extremely rare cardiac anomaly which is mainly characterized by localized or diffuse dilatation of left atrial appendage.[1] This condition with diverse symptoms including arrhythmia,thromboembolic events,and heart failure confuses physician and is easily misdiagnosed.[2] We herein report a case of huge LAAA which is misdiagnosed originally.

关键词： Left Atrial Appendage Aneurysm Surgery Syncope

From planar B4O5 with B2O2 core to B4O5- with B3O3 core: influence of the extra electron on the structure

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From planar B4O5 with B2O2 core to B4O5- with B3O3 core: inf...

中国化学会第八届全国物理无机化学学术会议

作者： Bing Yang Hui Wang Ling Pei ming-zhi song Da-zhi Li College of Chemistry and Chemical Engineering Binzhou University

Considerable attention has been paid to boron oxide, due primarily to their novel structures and chemical bonding, and to their role in mechanistic understanding of the highly-energetic combustion processes of boron and boranes at the molecular level. In this work, global structural searches and B3 LYP and CCSD(T) calculations are used to probe the structures and chemical bonding of oxygen-rich boron oxide clusters BO and BO,

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来源： cnki会议评论

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模块化天文CCD通用控制器

光子学报 2016年第11期45卷 146-152页

作者：张玉衡魏名智宋谦颜毅华中国科学院国家天文台北京100012 中国科学院太阳活动重点实验室北京100012 中国科学院大学北京100049 中国科学院光学天文重点实验室北京100012 美国加利福尼亚大学UCO/Lick天文台CCD实验室美国圣克鲁斯加州95064

为满足大规模拼接CCD天文观测应用系统对控制器的特殊要求,开展可扩展的模块化天文CCD通用控制器技术研究,并成功研制了样机系统.该系统采用相关双采样技术及控制技术等手段获得极低的读出噪声,采用全数字化的结构实现系统的通用性以及... 详细信息

为满足大规模拼接CCD天文观测应用系统对控制器的特殊要求,开展可扩展的模块化天文CCD通用控制器技术研究,并成功研制了样机系统.该系统采用相关双采样技术及控制技术等手段获得极低的读出噪声,采用全数字化的结构实现系统的通用性以及实现远程观测、远程监控的功能.测试结果表明,该系统的系统噪声小于3e^-,动态范围为16bit,非线性优于1%,满足现阶段大部分天文观测的需要.作为应用实例,利用本系统制作的真空紫外CCD相机,成功获得了He和氘121.5nm、164、193、205、218.6、273.3和294.5nm谱线的光谱图像,完成了对空间天文观测的102nm^320nm光谱仪的检测工作.

关键词：科学CCD 多CCD拼接 CCD控制器低噪声模块化紫外成像

Surface micro-arrays enhancing electromagnetic interference shielding of polydimethylsiloxane/multiwalled carbon nanotubes nanocomposites

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Nano Research 2025年第1期18卷 508-519页

作者： Ke Jiang zhi Chen Ji Yu Chen Zheng Shan Huang ming Wang Chongqing Key Laboratory of Soft-Matter Material Manufacturing School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China School of Mechanics Civil Engineering and ArchitecturesNorthwestern Polytechnical UniversityXi’an 710072China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China

Herein,the electromagnetic shielding performance of surface concave-convex(SC)and zig-zag micro-arrays was studied by using a simulation prediction and a three-dimensional(3D)printing custom ***,surface stripe concaveconvex(SSC)and surface cylindrical concave-convex(SCC)micro-arrays with or without zig-zag micro-arrays are designed,and their shielding performance is simulated in multi-bands(C-,X-band).The multiwalled carbon nanotubes/polydimethylsiloxane composites(MWCNT/PDMS)with different SC structures and different electrical conductivity are molded in acrylonitrile-butadiene-styrene copolymer(ABS)molds which are printed by a 3D *** results show that the electromagnetic interference shielding effectiveness(EMI SE)of the samples can be enhanced by constructing the SC micro-arrays with zig-zag micro-arrays,and improving with the increase of conductivity and *** addition,the shielding mechanism of the SC-MWCNT/PDMS composites is investigated and discussed by an electromagnetic simulation.

关键词： surface micro-arrays electrical properties electromagnetic interference(EMI)shielding three-dimensional(3D)printing

中国居民果蔬消费与营养发展的趋势预测及战略思考

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维普期刊数据库

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西南师范大学学报（自然科学版） 2017年第4期42卷 68-75页

作者：马恋陆智明宋乃庆西南大学数学与统计学院重庆400715 西南大学园艺园林学院重庆400715

基于28种果蔬消费量的基础数据(2003-2013年),借助R统计分析软件,采用等维灰数递补模型预测2016-2020年的果蔬消费量,分析不同果蔬的消费发展趋势.其次结合果蔬的消费量预测值估计我国居民未来5年膳食纤维、维生素和矿物质的摄入量,测... 详细信息

基于28种果蔬消费量的基础数据(2003-2013年),借助R统计分析软件,采用等维灰数递补模型预测2016-2020年的果蔬消费量,分析不同果蔬的消费发展趋势.其次结合果蔬的消费量预测值估计我国居民未来5年膳食纤维、维生素和矿物质的摄入量,测算结果与《中国居民膳食营养素参考摄入量(DRIs)》中的平均需要量(EAR)作比较,结果显示,所有营养素的摄入量都在逐年增加;维生素A,抗坏血酸,铁和镁等微量元素的摄入量已经比较充足;维生素E和磷的摄入量逐渐达到合理范围;核黄素、锌、钙的摄入量占DRI的70%~80%;纤维和硫胺素的摄入量占DRI的60%~70%;硒的摄入量不足1/2DRI.表明我国居民的膳食营养结构存在一定程度失衡,在满足居民身体健康所需均衡营养的意义下,提出果蔬产业和居民营养均衡协同发展的调整战略.

关键词：果蔬消费营养 GM(1,1) 等维灰数递补趋势预测中国居民

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锪窝及凹模对无头铆钉电磁铆接变形的影响

塑性工程学报 2017年第5期24卷 25-31页

作者：陈如明范治松黄伍平邓将华福州大学机械工程及自动化学院福建福州350116

无头铆钉具有钉杆成形均匀、连接结构的疲劳寿命高和铆钉自身密封性能好等优点,广泛应用于航空航天领域。针对无头铆钉电磁铆接过程中的成形质量控制问题,采用数值模拟与试验研究相结合的方法,运用宏观和微观分析手段,研究了锪窝结构及... 详细信息

无头铆钉具有钉杆成形均匀、连接结构的疲劳寿命高和铆钉自身密封性能好等优点,广泛应用于航空航天领域。针对无头铆钉电磁铆接过程中的成形质量控制问题,采用数值模拟与试验研究相结合的方法,运用宏观和微观分析手段,研究了锪窝结构及铆模型式对电磁铆接无头铆钉变形及干涉量的影响规律。研究结果表明:采用锪窝结构及凹型铆模能有效减小镦头45°方向剪切效应,使其变形均匀,无明显剪切带产生;相比于平头铆模,凹型铆模可有效限制材料的径向流动,更有利于提高钉杆干涉量;采用锪窝结构及凹型铆模时钉杆干涉量标准系数CV值较小,干涉量分布更加均匀。

关键词：电磁铆接无头铆钉锪窝结构数值模拟干涉量

MoS_(2)Lubricate‑Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

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Nano-Micro Letters 2025年第2期17卷 358-371页

作者： Jiaen Wang Wei ming Longfu Chen Tianliang song Moxi Yele Hao Zhang Long Yang Gegen Sarula Benliang Liang Luting Yan Guangsheng Wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

The design and fabrication of high toughness electromagnetic interference(EMI)shielding composite films with diminished reflection are an imperative task to solve electromagnetic pollution *** MXene/ANF(aramid nanofibers)–MoS_(2)composite films with nacre-like layered structure here are fabricated after the introduction of MoS_(2)into binary MXene/ANF composite *** introduction of MoS_(2)fulfills an impressive“kill three birds with one stone”improvement effect:lubrication toughening mechanical performance,reduction in secondary reflection pollution of electromagnetic wave,and improvement in the performance of photothermal *** the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 50:50),the strain to failure and tensile strength increase from 22.1±1.7%and 105.7±6.4 MPa and to 25.8±0.7%and 167.3±9.1 MPa,*** toughness elevates from 13.0±4.1 to 26.3±0.8 MJ m^(−3)(~102.3%)*** the reflection shielding effectiveness(SE_(R))of MXene/ANF(mass ratio of 50:50)decreases~10.8%.EMI shielding effectiveness(EMI SE)elevates to 41.0 dB(8.2–12.4 GHz);After the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 60:40),the strain to failure increases from 18.3±1.9%to 28.1±0.7%(~53.5%),the SE_(R)decreases~22.2%,and the corresponding EMI SE is 43.9 *** MoS_(2)also leads to a more efficient photothermal conversion performance(~45 to~55℃).Additionally,MXene/ANF–MoS_(2)composite films exhibit excellent electric heating performance,quick temperature elevation(15 s),excellent cycle stability(2,2.5,and 3 V),and long-term stability(2520 s).Combining with excellent mechanical performance with high MXene content,electric heating performance,and photothermal conversion performance,EMI shielding ternary MXene/ANF–MoS_(2)composite films could be applied in many industrial *** work broadens how to achieve a balance between mechanical properties and versatility of composites in the case of high-function fillers.

关键词： MXene-MoS_(2) Lubrication toughening EMI shielding Photothermal conversion Electric heating performance

健脾理气方药物血清对肝癌细胞端粒酶活性及凋亡的影响

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世界华人消化杂志 2000年第8期8卷 879-882页

作者：孟志强郭伟剑于尔辛宋明志黄雯霞上海医科大学肿瘤医院肝癌科上海市200032 上海第二医科大学新华医院放疗科上海市200093

目的观察健脾理气方药物血清对肝癌细胞 SMMC-7721端粒酶活性的影响以及诱导肿瘤细胞凋亡的作用,探讨其抗肿瘤治疗的作用机制。方法采用端粒重复序列扩增(TRAP)结合非变性聚丙烯酰胺凝胶电泳银染法,利用健脾理气方中药灌服新西兰兔后制... 详细信息

目的观察健脾理气方药物血清对肝癌细胞 SMMC-7721端粒酶活性的影响以及诱导肿瘤细胞凋亡的作用,探讨其抗肿瘤治疗的作用机制。方法采用端粒重复序列扩增(TRAP)结合非变性聚丙烯酰胺凝胶电泳银染法,利用健脾理气方中药灌服新西兰兔后制备含药血清,观察健脾理气方药物血清对体外培养的人肝癌细胞株SMMC-7721端粒酶活性的影响,同时利用流式细胞仪检测和荧光显微镜观察对细胞凋亡的影响。结果健脾理气药物血清在 d4开始对肿瘤细胞的端粒酶活性有抑制作用,电泳条带光密度明显降低;并能诱导肿瘤细胞的凋亡,凋亡的比例随作用时间的延长而升高,流式细胞术检测d2,d4,d6的凋亡比例分别为0.81%,5.16%,8.45%。结论对肿瘤细胞端粒酶活性的抑制和诱导肿瘤细胞凋亡是键脾理气中药抗肿瘤治疗作用机制的一部分。

关键词：肝肿瘤肝细胞瘤端粒酶活性细胞凋亡