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自制后路寰椎多轴钉板治疗不稳定寰椎骨折的远期疗效

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中华创伤杂志 2024年第3期40卷 206-213页

作者：朱强张海平闫亮贺宝荣杨熙斌姜永宏郝定均西安交通大学第一附属医院脊柱外科西安710061 西安交通大学附属红会医院脊柱外科西安710054

目的探讨自制后路寰椎多轴钉板治疗不稳定寰椎骨折的远期疗效。方法采用回顾性病例系列研究分析2011年1月至2013年4月西安交通大学附属红会医院收治的20例不稳定寰椎骨折患者的临床资料,其中男14例,女6例;年龄23~60岁[(42.7±8.6)岁]。... 详细信息

目的探讨自制后路寰椎多轴钉板治疗不稳定寰椎骨折的远期疗效。方法采用回顾性病例系列研究分析2011年1月至2013年4月西安交通大学附属红会医院收治的20例不稳定寰椎骨折患者的临床资料,其中男14例,女6例;年龄23~60岁[(42.7±8.6)岁]。患者均采用自制后路寰椎多轴钉板内固定治疗。记录手术时间、术中出血量;术后3 d通过颈椎CT扫描观察骨折复位情况;术后9个月通过颈椎正侧位X线片及CT扫描观察骨折愈合情况;术后1、2年及末次随访时采用Frankel分级评估有无迟发性脊髓损伤;比较术前,术后3个月、1年、2年及末次随访时颈椎视觉模拟评分(VAS);比较术后3个月、1年、2年及末次随访时颈椎轴向旋转活动度和屈伸活动度;观察术中和术后并发症发生情况。结果患者均获随访121~148个月[(135.0±6.8)个月]。手术时间为68~122 min[(86.0±14.1)min],术中出血量为90~400 ml[(120.0±67.9)ml]。术后3 d颈椎CT扫描示骨折复位均满意。术后9个月骨折均骨性愈合。术后1、2年及末次随访时,无迟发性脊髓损伤出现,Frankel分级均为E级。术后3个月、1年、2年及末次随访时,颈椎VAS分别为2.0(1.3,3.0)分、1.0(1.0,1.8)分、1.0(0.3,1.0)分、1.0(0.3,1.0)分,均较术前的7.0(6.0,7.8)分显著降低(P0.05)。术后1、2年及末次随访时,颈椎轴向旋转活动度分别为(103.0±8.3)°、(128.3±11.4)°、(129.8±13.6)°,均较术后3个月的(85.3±7.0)°显著提高(P0.05)。术后1、2年及末次随访时,颈椎屈伸活动度分别为(65.5±4.8)°、(78.3±6.5)°、(79.3±6.9)°,均较术后3个月的(54.3±4.4)°显著提高(P0.05)。术中均未出现动静脉等损伤。术后未出现切口感染或裂开,未出现长期卧床导致的肺部或泌尿系感染、压疮形成或深静脉血栓形成等并发症;长期随访未发现螺钉、寰椎板松动或断裂情况。1例患者末次随访时颈椎轻微疼痛,旋转时弹响,活动受限。结论自制后路寰椎多轴钉板治疗不稳定寰椎骨折,手术创伤小,复位满意,固定牢靠,疼痛缓解明显,能有效保留颈椎原有的活动度,并发症少,远期疗效满意。

关键词：寰枢关节关节不稳定性骨折固定术,内

Characterization and functional analysis of chitinase family genes involved in nymph-adult transition of Sogatella furcifera

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Insect Science 2021年第4期28卷 901-916页

作者： xibin yang Cao Zhou Guiyun Long Hong yang Chen Chen Daochao Jin Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions Institute of EntomologyGuizhou UniversityGuiyangChina College of Tobacco Science of Guizhou University GuiyangChina Scientific Observing and Experimental Station of Crop Pest in Guiyang Ministry of AgricultureGuiyangChina

Chitinase degrades chitin in the old epidermis or peritrophic matrix of insects,which ensures normal development and *** our previous work,we comprehensively studied the function of SfCht7 in Sogatella ***,the number and function of chitinase genes in *** remain ***,we identified 12 full-length chitinase transcripts from ***,which included nine chitinase(Cht),two imaginal disc growth factor(IDGF),and one endo-β-N-acetylglucosaminidase(ENGase)*** analysis results revealed that the expression levels of eight genes(SfCht3,SfCht5,SfCht6-1,SfCht6-2,SfCht7,SfCht8,SfCht10,and SfIDGF2)with similar transcript levels peaked prior to molting of each nymph and were highly expressed in the *** on RNA interference(RNAi),description of the functions of each chitinase gene indicated that the silencing of SfCht5,SfCht10,and SfIDGF2 led to molting defects and *** inhibited the expressions of SfCht5,SfCht7,SfCht10,and SfIDGF2,which led to downregulated expressions of chitin synthase 1(SfCHS1,SfCHS1a,and SfCHS1b)and four chitin deacetylase genes(SfCDA1,SfCDA2,SfCDA3,and SfCDA4),and caused a change in the expression level of two trehalase genes(TRE1 and TRE2).Furthermore,silencing of SfCht7 induced a significant decrease in the expression levels of three wing development-related genes(SfWG,SfDpp,and SfHh).In conclusion,SfCht5,SfCht7,SfCht10,and SfIDGF2 play vital roles in nymph–adult transition and are involved in the regulation of chitin metabolism,and SfCht7 is also involved in wing development;therefore,these genes are potential targets for control of ***.

关键词： chitinase chitin deacetylase chitin synthesis RNA interference Sogatella furcifera wing development

Mode-insensitive and mode-selective optical switch based on asymmetric Y-junctions and MMI couplers

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Photonics Research 2024年第3期12卷 423-430页

作者： SHIJIE SUN QIDONG YU YUANHUA CHE TIANHANG LIAN YUHANG XIE DAMING ZHANG xibin WANG State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

Driven by the large volume demands of data in transmission systems,the number of spatial modes supported by mode-division multiplexing(MDM)systems is being increased to take full advantage of the parallelism of the signals in different spatial *** a key element for photonic integrated circuits,the multimode waveguide optical switch(MWOS)is playing an important role for data exchange and signal ***,the function of the traditional MWOS is simple,which could only implement the mode-insensitive or mode-selective switching function;it is also difficult to scale to accommodate more spatial modes because of the limitation of the device ***,it is still challenging to realize a multifunctional and scalable MWOS that could support multiple modes with low power consumption and high ***,we propose and experimentally demonstrate a multifunctional MWOS based on asymmetric Y-junctions and multimode interference(MMI)couplers fabricated on a polymer waveguide *** mode-insensitive and mode-selective switching functions can be achieved via selectively heating different electrode *** fabricated device with the total length of∼0.8 cmshows an insertion loss of less than 12.1 dB,and an extinction ratio of larger than 8.4 dB with a power consumption of∼32 mW for both mode-insensitive and mode-selective switching functions,at 1550 nm *** proposed MWOS can also be scaled to accommodate more spatial modes flexibly and easily,which can serve as an important building block for MDM systems.

关键词： waveguide optical mode

Early chatter identification based on optimized VMD with multi-band information fusion and compression method in robotic milling process

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Chinese Journal of Aeronautics 2024年第6期37卷 464-484页

作者： Sichen CHEN Zhiqiang LIANG Yuchao DU Zirui GAO Haoran ZHENG Zhibing LIU Tianyang QIU xibin WANG School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China

Undesirable self-excited chatter has always been a typical issue restricting the improvement of robotic milling quality and *** chatter identification based on processing signals can prompt operators to adjust the machining process and prevent chatter *** with the traditional machine tool,the uncertain multiple chatter frequency bands and the band-moving of the chatter frequency in robotic milling process make it more challenging to extract chatter *** paper proposes a novel method of chatter identification using optimized variational mode decomposition(OVMD)with multi-band information fusion and compression technology(MT).During the robotic milling process,the number of decomposed modes k and the penalty coefficient a are optimized based on the dominant component of frequency scope partition and fitness of the mode center ***,the mayfly optimization algorithm(MA)is employed to obtain the global optimal parameter *** order to conquer information collection about the uncertain multiple chatter frequency bands and the band-moving of the chatter frequency in robotic milling process,MT is presented to reduce computation and extract signal ***,the cross entropy of the image(CEI)is proposed as the final chatter indicator to identify the chatter *** robotic milling experiments are carried out to verify the proposed method,and the results show that it can distinguish the robotic milling condition by extracting the uncertain multiple chatter frequency bands and overcome the band-moving of the chatter frequency in robotic milling process.

关键词： Robotic milling Chatter detection Variational mode decomposition Information fusion and compression Chatter featur

Fringe optimization for structured illumination super-resolution microscope with digital micromirror device

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Journal of Innovative Optical Health Sciences 2019年第3期12卷 78-86页

作者： xibin yang Qian Zhu Zhenglong Sun Gang Wen Xin Jin Linbo Wang Jialin Liu Daxi Xiong Hui Li Jiangsu Key Lab of Medical Optics Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences No.88 Keling Street Suzhou 215163P.R.China University of Chinese Academy of Sciences Beijing 100049 P.R.China

Structured illumination microscopy(SIM)is a promising super-resolution technique for imaging subcellular structures and dynamics due to its compatibility with most commonly usedffuorescent labeling *** illumination can be obtained by either laser interference or projection of fringe ***,we proposed a fringe projector composed of a compact multiwavelength LEDs module and a digital micromirror device(DMD)which can be directly attached to most commercial invertedffuorescent microscopes and update it into a SIM *** effects of the period and duty cycle of fringe patterns on the modulation depth of the structured lightfield were *** the optimized fringe pattern,1:6×resolution improvement could be obtained with high-end oil *** imaging and dynamics of subcellular organelles in live cells were also *** method provides a low-cost solution for SIM setup to expand its wide range of applications to most research labs in thefield of life science and medicine.

关键词： Structured illumination super-resolution digital micromirror device fringe pattern modulation depth

A Transparent Photoresist Made of Titanium Dioxide Nanoparticle-Embedded Acrylic Resin with a Tunable Refractive Index for UV-Imprint Lithography

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Engineering 2024年第6期37卷 96-104页

作者： Yinglu Liu Dan Wang Changlin Liu Qianqian Hao Jian Li Jie-Xin Wang Xiuyun Chen Peng Zhong xibin Shao Jian-Feng Chen State Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China BOE Technology Group Co. Ltd.Beijing 100176China

Transparent photoresists with a high refractive index(RI)and high transmittance in visible wavelengths have promising functionalities in optical *** work reports a kind of tunable optical material composed of titanium dioxide nanoparticles embedded in acrylic resin with a high RI for ultraviolet(UV)-imprint *** hybrid film exhibits a tunable RI of up to 1.67(589 nm)after being cured by UV light,while maintaining both a high transparency of over 98%in the visible light range and a low haze of less than 0.05%.The precision machining of optical microstructures can be imprinted easily and efficiently using the hybrid resin,which acts as a light guide plate(LGP)to guide the light from the side to the top in order to conserve the energy of the display *** preliminary studies based on both laboratory and commercial experiments pave the way for exploiting the unparalleled optical properties of nanocomposite resins and promoting their industrial application.

关键词： Photoresist Tunable refractive index Hanson solubility Ultraviolet imprint Organic-inorganic composites

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语序灵活性的限度和语音层漂移的性质与条件

语言科学 2023年第5期22卷 449-468页

作者：徐杰杨西彬倪广妍澳门大学人文学院中国语言文学系中国澳门氹仔999078 浙江师范大学国际学院浙江金华321004 重庆邮电大学国际学院重庆400065

移位分析是语法理论处理和解释异形同义句法格式间异同关系的基本手段和基本工具,移位根据其发生的层面可以分为三类:明移、暗移和漂移。其中,明移发生于显性句法结构的推导过程中,所见即所得;暗移发生于逻辑式层面,看似未动,实际已移;... 详细信息

移位分析是语法理论处理和解释异形同义句法格式间异同关系的基本手段和基本工具,移位根据其发生的层面可以分为三类:明移、暗移和漂移。其中,明移发生于显性句法结构的推导过程中,所见即所得;暗移发生于逻辑式层面,看似未动,实际已移;漂移发生在语音式层面,看似已动,实则未移。三类性质不同的移位操作发生的语言层面不同,并且诱发动因和运行条件也各不相同。明移的诱发动因主要是为了满足表层结构中句法条件的要求,暗移则是为了满足逻辑式中某些特定的语义解释条件,漂移的诱发动因既非表层句法条件,也不是逻辑式中的语义解释要求,而是“急促”和“强调”两大语用因素的共同驱动。本文通过对汉语中主谓结构倒装句、状中结构倒装句和述补结构倒装句等实际案例的分析,重在论述“漂移”并非仅仅是源自理论系统内部的抽象概念。在此理论体系和分析框架下,一系列重要的语序现象和语法案例将会得到重新整理和重新解释。那些看似随机偶然飘忽不定的灵活句法现象会得到圈定和限制,而这些案例的研究有助于发展和完善漂移理论本身,尤其是此种移位的性质定位、驱动因素和限制条件。

关键词：语音式漂移倒装句限度条件汉语

非煤系隧道瓦斯超前探测与监测技术研究——以黄家梁隧道工程为例

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工程技术研究 2023年第4期8卷 46-49页

作者：杨锡斌中铁五局集团第一工程有限责任公司湖南长沙410117

文章以西成客运专线黄家梁一级风险高瓦斯隧道为例,采用超前钻孔探测孔内瓦斯浓度,理论上可估算隧道开挖段岩体内瓦斯含量,但受岩体内瓦斯分布不均匀和裂隙不规则等因素影响,无法准确计算瓦斯含量。如果隧道开挖后,采用自动监控设备监... 详细信息

文章以西成客运专线黄家梁一级风险高瓦斯隧道为例,采用超前钻孔探测孔内瓦斯浓度,理论上可估算隧道开挖段岩体内瓦斯含量,但受岩体内瓦斯分布不均匀和裂隙不规则等因素影响,无法准确计算瓦斯含量。如果隧道开挖后,采用自动监控设备监测岩体回风瓦斯浓度和回风风速,则可计算开挖段的瓦斯绝对涌出量。为了预测隧道开挖段岩体内瓦斯含量,文章研究建立了岩体内瓦斯含量与瓦斯绝对涌出量的关系,开展瓦斯工艺性试验,判别开挖段瓦斯类别,以更好地进行施工安全准备,构筑预防瓦斯灾害网,为今后瓦斯隧道施工提供借鉴。

关键词：隧道超前探测瓦斯含量涌出量工艺性试验

Chemical composition and size distribution of secondary organic aerosol formed from the photooxidation of isoprene

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Journal of Environmental Sciences 2009年第11期21卷 1525-1531页

作者： LIU Xianyun, ZHANG Weijun, WANG Zhenya, ZHAO Weixiong, TAO Ling, yang xibin Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. Laboratory of Environmental Spectroscopy Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Hefei 230031 China

Photooxidation of isoprene leads to the formation of secondary organic aerosol （SOA）. In this study, the chemical composition of SOA formed from OH-initiated photooxidation of isoprene has been investigated with gas chromatography/mass spectrometry （GC/MS） and a home-made aerosol time-of-fiight mass spectrometer. Sampling particles generated in a home-made smog chamber. The size distribution of SOA particles was detected by a TSI 3321 aerodynamic particle size spectrometer in real time. Results showed that SOA created by isoprene photooxidation was predominantly in the form of fine particles, which have diameters less than 2.5 μm. The obtained mass spectra of individual particles show that products of the OH-initiated oxidation of isoprene contain methyl vinyl ketone, methacrolein, formaldehyde, and some other hydroxycarbonyls. The possible reaction mechanisms leading to these products were also discussed.

关键词： secondary organic aerosols isoprene aerosol time-of-fiight mass spectrometer smog chamber size distribution