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Chinese Chemical Letters 2024年第3期35卷 40-51页

作者： Si Sun shuang Song Shuai Yang Yong-Li He Yang shi Peng Zhou Zhao-kun Xiong Yang Liu Heng Zhang Ye Du Chuan-Shu He Bo Lai State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaSichuanChengdu 610054China

Manganese oxides(MNO_(x)),as low-toxicity and high-abundance catalysts,have been demonstrated to hold great promise for application in advanced oxidation processes(AOPs).However,further application of this material is restricted due to its unsatisfactory oxidant activation ***,recently remarkable research on deep activation mechanisms and modification of MNO_(x)have been undertaken to improve its ***,modification enhancement mechanisms of MNO_(x)to efficiently degrade various organic contaminants were discussed and highlighted,including metal doping,coupling with other metal oxides,composite with carbonaceous material,and compounding with other *** activation mechanisms of different MNO_(x)and derivative-modified material(such as doped MNO_(x),metal oxide-MNO_(x)hybrids,and MNO_(x)-carbonaceous material hybrids)were summarized in great details,which was specifically categorized into both radical and non-radical *** effects of pH,inorganic ions,and natural organic matter on degradation reactions are also ***,future research directions and perspectives are presented to provide a clear interpretation on the MNO_(x)initiated AOPs.

关键词： Manganese oxide Derivative-modified materials Modification enhancement mechanisms Advanced oxidation process Activation mechanism

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负荷对手臂肌肉运动取向的影响

纳米技术与精密工程 2012年第3期10卷 257-262页

作者：曹玉珍石双双李笑天天津大学精密仪器与光电子工程学院天津300072

人体运动时肌肉活动模式的了解与掌握对运动障碍患者的康复治疗有重要的指导意义.该文利用负荷作用下手臂运动时产生的表面肌电信号(EMG),结合三维运动测量系统,提取肌电信号随负荷和运动方向变化的时域和非线性特征值,以探究负荷对手... 详细信息

人体运动时肌肉活动模式的了解与掌握对运动障碍患者的康复治疗有重要的指导意义.该文利用负荷作用下手臂运动时产生的表面肌电信号(EMG),结合三维运动测量系统,提取肌电信号随负荷和运动方向变化的时域和非线性特征值,以探究负荷对手臂肌肉运动取向的影响.以正常人右侧手臂为实验对象,研究结果发现手臂肌肉在运动时均存在一定的角度取向,且随着负荷的增加,各肌肉角度取向有规律性的偏转.在手臂运动障碍患者的康复治疗中,可据此设计特定动作来训练病人手臂指定肌肉的适应力.

关键词：肌电信号(EMG) 手臂肌肉运动取向均方根递归率

Contributing to Better Development of the Modern Civilization of Chinese Nation Celebrating the Opening of the New Museum of the Yin Xu Site

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China & The World Cultural Exchange 2024年第4期 44-48页

作者： Li Jun shuang Rui shi Linjing 不详

The discovery of Yin Xu has turned the history of the Shang Dynasty into credible history,continuing the trend of integrating civilizations from all directions for over a thousand years,and initiating a pattern of continuous,diversified,and unified civilization for more than three thousand *** the Yin Xu Site as the fulcrum,it constructs the spatialtemporal system of Xia-Shang archaeology and culture.

关键词： Site integrating unified

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眼眶孤立性纤维瘤的CT及MRI特点

中国医学影像技术 2012年第4期28卷 652-655页

作者：石双任陈宏伟南京医科大学附属无锡市人民医院放射科江苏无锡214023

目的探讨眼眶孤立性纤维瘤(SFT)的CT及MRI表现特点。方法回顾性分析7例经手术病理证实的眼眶SFT的CT及MRI资料。结果 7例SFT均为单发,边缘界限清晰,病灶最大直径17～45mm;跨肌锥内、外生长1例,肌锥外2例,肌锥内4例。6例接受CT平扫,均表... 详细信息

目的探讨眼眶孤立性纤维瘤(SFT)的CT及MRI表现特点。方法回顾性分析7例经手术病理证实的眼眶SFT的CT及MRI资料。结果 7例SFT均为单发,边缘界限清晰,病灶最大直径17～45mm;跨肌锥内、外生长1例,肌锥外2例,肌锥内4例。6例接受CT平扫,均表现为等密度肿块,内未见出血、囊变及钙化。4例接受MR平扫,其中3例T1WI呈等信号,1例呈稍低信号;3例T2WI呈稍高信号,1例呈等信号;2例于T2WI可见小囊样高信号囊变区;4例于T1WI或T2WI可见管状或分支状的血管流空信号。6例CT或MRI增强后明显强化,其中3例CT强化方式为快进快出。结论增强后病灶呈快进快出的强化方式及MR见流空信号是眼眶SFT的特征性影像学表现。

关键词：眼眶肿瘤纤维瘤体层摄影术,X线计算机磁共振成像

Tojapride Reverses Esophageal Epithelial Inflammatory Responses on Reflux Esophagitis Model Rats

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Chinese Journal of Integrative Medicine 2021年第8期27卷 604-612页

作者： YIN Xiao-lan ZHONG Linda LIN Cheng-yuan shi Xiao-shuang ZHANG Jiao CHEN Zheng-yi CHE Hui MA Xiang-xue TIAN Ya-xin DUAN Yuan-zhi LU Lin Jl Hai-jie ZHAO Ying-pan TANG Xu-dong WANG Feng-yun Department of Gastroenterology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing100091China School of Chinese Medicine Hong Kong Baptist UniversityHong Kong Special Administrative RegionKowloonChina Department of Gastroenterology Changping Hospital of Traditional Chinese MedicineBeijing102200China Department of Traditional Chinese Medicine Dongfeng General HospitalShiyanHubei Province442000China Center of Clinical Pharmacology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing100091China

Objective To investigate the mechanism of Tojapride,a Chinese herbal formula extract,on strengthening the barrier function of esophageal epithelium in rats with reflux esophagitis(RE).Methods Ten out of 85 SD rats were randomly selected as the sham group(n10),and 75 rats were developed a reflux esophagitis model(RE)by the esophageal and duodenal side-to-side *** successful modeling rats were divided into different medicated groups through a random number table including the model,low-,medium-,and high-dose of Tojapride as well as omeprazole groups(n10).Three doses of Tojapride[5.73,11.46,22.92 g/(kg•d)]and omeprazole[4.17 mg/(kg•d)]were administrated intragastrically twice daily for 3 *** the rats in the sham and model groups were administered 10 mL/kg distilled *** fluid was collected and the supernatant was kept to measure for volume,pH value and *** tissues were isolated to monitor the morphological changes through hematoxylin-eosin(HE)staining,and esophageal epithelial ultrastructure was observed by transmission electron *** expressions of nuclear factor kappa-light-chain-enhancer of activated B cells p65(NF-KBp65),κB kinase beta(IKKß),occludin,and zonula occludens-1(ZO-1)in the esophageal tissues were measured by immunohistochemistry and Western blot,*** The gastric pH value in the model group was significantly lower than the sham group(P<0.05).Compared with the model group,gastric pH value in the omeprazole and medium-dose of Tojapride groups were significantly higher(P<0.05).A large area of ulceration was found on the esophageal mucosa from the model rats,while varying degrees of congestion and partially visible erosion was observed in the remaining *** increase in cell gap width and decrease in desmosome count was seen in RE rats and the effect was reversed by Tojapride *** with the sham group,the IKKßlevels were significantly higher in the model group(P<0.0

关键词： reflux-esophagitis tojapride esophageal epithelial barrier anti-inflammatory

松辽盆地北部裂后反转期层序地层格架及其形成机制

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地球科学（中国地质大学学报） 2012年第3期37卷 545-555页

作者：史双双任建业张顺付秀丽唐圣明中国地质大学构造与油气资源教育部重点实验室湖北武汉430074 中国地质大学资源学院湖北武汉430074 大庆油田有限责任公司勘探开发研究院黑龙江大庆163712

应用高精度层序地层学分析的原理和方法,通过对研究区新处理的区域性地震反射剖面、测井和岩心等资料的综合分析,建立了松辽盆地北部裂后反转期层序地层格架.通过盆地的充填记录、湖平面变化和区域演化等信息,论证了松辽盆地裂后反转期... 详细信息

应用高精度层序地层学分析的原理和方法,通过对研究区新处理的区域性地震反射剖面、测井和岩心等资料的综合分析,建立了松辽盆地北部裂后反转期层序地层格架.通过盆地的充填记录、湖平面变化和区域演化等信息,论证了松辽盆地裂后反转期各级界面的地质属性,分析了其形成机制,建立了盆地的沉积演化过程模型.研究表明,盆地裂后反转期发育的一级界面SB02和二级界面SB03、SB11均是区域构造挤压事件的响应界面;而湖平面的变化和物源供给导致了三级层序体系域构成样式的多样化;嫩江组二、三段识别出的7个四级层序则是在三级湖平面旋回的高位稳定期盆地物源充足、沉降速率较低的条件下形成的.本研究为松辽盆地中浅层隐蔽油气勘探提供了重要的等时地层对比格架.

关键词：松辽盆地裂后反转层序地层四级层序形成机制石油地质

OAAFormer:Robust and Efficient Point Cloud Registration Through Overlapping-Aware Attention in Transformer

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Journal of Computer Science & Technology 2024年第4期39卷 755-770页

作者： Jun-Jie Gao Qiu-Jie Dong Rui-An Wang shuang-Min Chen shi-Qing Xin Chang-He Tu Wenping Wang School of Computer Science and Technology Shandong UniversityQingdao 266237China School of Information and Technology Qingdao University of Science and TechnologyQingdao 266061China College of Engineering Texas A&M UniversityTexasTX 77843U.S.A.

In the domain of point cloud registration,the coarse-to-fine feature matching paradigm has received significant attention due to its impressive *** paradigm involves a two-step process:first,the extraction of multilevel features,and subsequently,the propagation of correspondences from coarse to fine ***,this approach faces two notable ***,the use of the Dual Softmax operation may promote one-to-one correspondences between superpoints,inadvertently excluding valuable ***,it is crucial to closely examine the overlapping areas between point clouds,as only correspondences within these regions decisively determine the actual *** these issues,we propose OAAFormer to enhance correspondence *** the one hand,we introduce a soft matching mechanism to facilitate the propagation of potentially valuable correspondences from coarse to fine *** the other hand,we integrate an overlapping region detection module to minimize mismatches to the greatest extent ***,we introduce a region-wise attention module with linear complexity during the fine-level matching phase,designed to enhance the discriminative capabilities of the extracted *** on the challenging 3DLoMatch benchmark demonstrate that our approach leads to a substantial increase of about 7%in the inlier ratio,as well as an enhancement of 2%-4%in registration ***,to accelerate the prediction process,we replace the Conventional Random Sample Consensus(RANSAC)algorithm with the selection of a limited yet representative set of high-confidence correspondences,resulting in a 100 times speedup while still maintaining comparable registration performance.

关键词： point cloud registration coarse-to-fine overlapping region feature matching Transformer

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基于几何约束的方向定位观测误差优化方法

弹箭与制导学报 2012年第6期32卷 159-162页

作者：游培寒石爽石顺桥 95856部队

目前应用广泛的方向定位算法往往忽略观测点误差。Vaghefi等人将基于极大似然法的多点方向定位方法进行了扩展,将观测点位置误差引入模型,有效提高了优化模型的精度;但是该模型没有考虑观测点和目标之间的几何关系约束。文中将等式约束... 详细信息

目前应用广泛的方向定位算法往往忽略观测点误差。Vaghefi等人将基于极大似然法的多点方向定位方法进行了扩展,将观测点位置误差引入模型,有效提高了优化模型的精度;但是该模型没有考虑观测点和目标之间的几何关系约束。文中将等式约束条件引入优化模型,并利用SQP优化方法进行优化计算,简化了Hessian矩阵,推导出其他参数的解析解,由于考虑了几何约束关系,仿真结果表明新模型相对极大似然模型能更加准确的修正目标和观测点位置。

关键词：方向定位 SQP优化方法极大似然方法

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一种新的边界跟踪算法

工程图学学报 2011年第3期32卷 52-56页

作者：石爽曲仕茹何力西北工业大学自动化学院陕西西安710072

针对提取的图像边缘中存在非单像素和断点的情况,提出了双层边界区域生长的边界跟踪算法。通过对中心点周围里层点和外层点分别进行搜索,然后把里层点和上一层中心点的外层点合并,并将并集中的点分别作为下一步搜索的中心点,循环向下搜... 详细信息

针对提取的图像边缘中存在非单像素和断点的情况,提出了双层边界区域生长的边界跟踪算法。通过对中心点周围里层点和外层点分别进行搜索,然后把里层点和上一层中心点的外层点合并,并将并集中的点分别作为下一步搜索的中心点,循环向下搜索。同时充分考虑了起始中心点单向搜索的情况,并在一次搜索过程中完成了对断点的补齐工作,从而弥补了"记忆爬虫"法和八邻域法在跟踪分支、断点和"厚"边缘过程中存在的不足。实验证明该方法效果较好。

关键词：区域生长边界跟踪爬虫八邻域

基于周期动态事件触发的网络化切换系统的分析与控制

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控制与决策 2021年第10期36卷 2467-2474页

作者：杨柳费中阳史爽关朝旭哈尔滨工业大学航天学院哈尔滨150001

针对网络化系统研究具有模态依赖平均驻留时间(MDADT)和异步的线性切换系统的周期动态事件触发H∞控制.与已有切换系统事件触发方式不同,周期动态事件触发引入动态事件触发参数,且具有最小的事件触发间隔下界,在降低数据发送数量的同时... 详细信息

针对网络化系统研究具有模态依赖平均驻留时间(MDADT)和异步的线性切换系统的周期动态事件触发H∞控制.与已有切换系统事件触发方式不同,周期动态事件触发引入动态事件触发参数,且具有最小的事件触发间隔下界,在降低数据发送数量的同时,能够有效避免奇诺行为;利用MDADT方法和多Lyapunov函数技术,给出闭环系统具有指数稳定和H∞加权性能的充分条件;在此基础上,针对周期动态事件触发机制中可能存在的异步问题,提出相应的控制器设计准则.最后,通过算例验证所得结果的优越性.

关键词：切换系统模态依赖平均驻留时间多Lyapunov函数异步切换周期动态事件触发