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A Slow and Clean Fluorine Atom Beam Source Based on Ultraviolet Laser Photolysis

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Chinese Journal of Chemical Physics 2021年第4期34卷 381-385,I0002页

作者： yu-feng Wang tian-yu du Dong-xu Dai Chun-lei Xiao Xue-ming Yang State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China College of Science Southern University of Science and TechnologyShenzhen 518055China

A slow and clean uorine atom beam source is one of the essential components for the low-collision energy scattering experiment involving uorine *** this work,we describe a simple but ef-fective photolysis uorine atom beam source based on ultraviolet laser photolysis,the performance of which was demonstrated by high-resolution time-of-ight spectra from the reactive scattering of F+*** beam source paved the way for stud-ies of low energy collisions with uorine atoms.

关键词： Photolysis Molecular beam scat-tering Fluorine atom beam

基于全局人工鱼群算法的变压器投切控制策略分析

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数学的实践与认识 2017年第19期47卷 128-135页

作者：梁天宇杜欣慧杜璞良太原理工大学电气与动力工程学院山西太原030024

钢铁企业中变压器的投切往往都是根据工作人员的经验而操作进行的,忽略了投切时机对于变压器损耗的影响.考虑到钢铁企业在电力负荷中占有很大的比重,所以投切不恰当而产生的费用是不可忽视的.针对上述问题,提出一种基于全局人工鱼群算... 详细信息

钢铁企业中变压器的投切往往都是根据工作人员的经验而操作进行的,忽略了投切时机对于变压器损耗的影响.考虑到钢铁企业在电力负荷中占有很大的比重,所以投切不恰当而产生的费用是不可忽视的.针对上述问题,提出一种基于全局人工鱼群算法的变压器投切控制方法,根据钢铁企业变压器实际参数,计算出变电站不同运行情况下的临界负载量,通过结合实际负荷情况确定变压器投切点;全局人工鱼群算法具有较快的收敛速度,可以用于解决有实时性要求的问题.以最终节电效益用作为目标函数,基于全局人工鱼群算法得到最优投切方案.最后以某钢铁企业变压器投切为例,验证了所提方法的有效性.

关键词：全局人工鱼群算法投切控制临界负载量节电效益钢铁企业

A Novel Self-Supervised Learning Network for Binocular Disparity Estimation

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 209-229页

作者： Jiawei tian yu Zhou Xiaobing Chen Salman A.AlQahtani Hongrong Chen Bo Yang Siyu Lu Wenfeng Zheng Department of Computer Science and Engineering Major in Bio Artificial IntelligenceHanyang UniversityAnsan-si15577Republic of Korea School of Electrical and Computer Engineering Louisiana State UniversityBaton RougeLA 70803USA Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityRiyadh11574Saudi Arabia School of Automation University of Electronic Science and Technology of ChinaChengdu610054China

Two-dimensional endoscopic images are susceptible to interferences such as specular reflections and monotonous texture illumination,hindering accurate three-dimensional lesion reconstruction by surgical *** study proposes a novel end-to-end disparity estimation model to address these *** approach combines a Pseudo-Siamese neural network architecture with pyramid dilated convolutions,integrating multi-scale image information to enhance robustness against lighting *** study introduces a Pseudo-Siamese structure-based disparity regression model that simplifies left-right image comparison,improving accuracy and *** model was evaluated using a dataset of stereo endoscopic videos captured by the Da Vinci surgical robot,comprising simulated silicone heart sequences and real heart video *** results demonstrate significant improvement in the network’s resistance to lighting interference without substantially increasing ***,the model exhibited faster convergence during training,contributing to overall performance *** study advances endoscopic image processing accuracy and has potential implications for surgical robot applications in complex environments.

关键词： Parallax estimation parallax regression model self-supervised learning Pseudo-Siamese neural network pyramid dilated convolution binocular disparity estimation

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电力线数字灰度图像增强算法

计算机系统应用 2017年第2期26卷 104-111页

作者：赵雨田都洪基南京理工大学自动化学院南京210094

无人机巡线大大提高了输电线路巡线的效率,若利用计算机处理采集的数字图像可以进一步提高效率,而图像增强处理是计算机处理图像的一个重要过程.结合电力线数字灰度图像的特点,讨论了利用随机数学模型和模糊数学模型两类不同灰度图像增... 详细信息

无人机巡线大大提高了输电线路巡线的效率,若利用计算机处理采集的数字图像可以进一步提高效率,而图像增强处理是计算机处理图像的一个重要过程.结合电力线数字灰度图像的特点,讨论了利用随机数学模型和模糊数学模型两类不同灰度图像增强算法,比较了这些算法的应用效果.分析了现有图像增强算法在电力线灰度图像中应用的不足,据此给出了一种基于模糊数学模型的改进型图像增强算法,并利用实例验证其具有更好的适用性.

关键词：电力线灰度图像图像增强随机数学模糊数学

Dip2a regulates stress susceptibility in the basolateral amygdala

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Neural Regeneration Research 2025年第6期20卷 1735-1748页

作者： Jing Li Zixuan He Weitai Chai Meng tian Huali yu Xiaoxiao He Xiaojuan Zhu Key Laboratory of Molecular Epigenetics Ministry of Education Institute of Genetics and CytologyNortheast Normal UniversityChangchunJilin ProvinceChina

Dysregulation of neurotransmitter metabolism in the central nervous system contributes to mood disorders such as depression, anxiety, and post–traumatic stress disorder. Monoamines and amino acids are important types of neurotransmitters. Our previous results have shown that disco-interacting protein 2 homolog A(Dip2a) knockout mice exhibit brain development disorders and abnormal amino acid metabolism in serum. This suggests that DIP2A is involved in the metabolism of amino acid–associated neurotransmitters. Therefore, we performed targeted neurotransmitter metabolomics analysis and found that Dip2a deficiency caused abnormal metabolism of tryptophan and thyroxine in the basolateral amygdala and medial prefrontal cortex. In addition, acute restraint stress induced a decrease in 5-hydroxytryptamine in the basolateral amygdala. Additionally, Dip2a was abundantly expressed in excitatory neurons of the basolateral amygdala, and deletion of Dip2a in these neurons resulted in hopelessness-like behavior in the tail suspension test. Altogether, these findings demonstrate that DIP2A in the basolateral amygdala may be involved in the regulation of stress susceptibility. This provides critical evidence implicating a role of DIP2A in affective disorders.

关键词： 5-hydroxytryptamine acute restraint stress basolateral amygdala CaMKII neurons DIP2A metabolomics neurotransmitters principal component analysis stress susceptibility tryptophan

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天然水环境中光化学反应体系概述

广州化工 2017年第7期45卷 14-15,34页

作者：兰天宇杜海军贵州民族大学贵州贵阳550025

天然水环境中含有多种天然和人工化合物,阳光辐射下会发生各种光化学反应,影响水中各种天然和人工化合物的迁移转化以及水生生物。本文主要介绍了天然水环境中光化学反应体系的研究,包括铁(Ⅲ)反应体系、亚硝酸根和硝酸根反应体系、腐... 详细信息

天然水环境中含有多种天然和人工化合物,阳光辐射下会发生各种光化学反应,影响水中各种天然和人工化合物的迁移转化以及水生生物。本文主要介绍了天然水环境中光化学反应体系的研究,包括铁(Ⅲ)反应体系、亚硝酸根和硝酸根反应体系、腐殖质反应体系三种,并对三种体系在环境污染物治理方面的应用和发展前景进行展望。

关键词：天然水光化学环境污染物

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应用扫描电镜对一些膨润土形貌的观察

土壤学报 1982年第1期 92-95页

作者：于震宗黄天佑余笃武清华大学

用透射电子显微镜对膨润土形貌的观察,并用它来鉴别膨润土类型的方法早已被人们采用。一般认为钙膨润土的蒙脱石颗粒不易分散成薄片,而且聚集成大小不同,厚度不等的团块或花絮状集团,轮廓清楚,边缘常呈突刺状或涡旋状,而钠膨润土的蒙脱石

关键词：膨润土矿形貌特征矿石钙基膨润土形貌钠基膨润土人工钠化钠蒙脱石扫描电镜

A 3D elastic-plastic-viscous constitutive model for soils considering the stress path dependency

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Science China(Technological Sciences) 2020年第5期63卷 791-808页

作者： LU DeChun MIAO JinBo du XiuLi tian yu YAO YangPing Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing 100124China School of Transportation Science and Engineering Beihang UniversityBeijing 100191China

In order to consider the stress path dependency of soils,this paper decomposes any arbitrary stress path into several infinitesimal stress *** the infinitesimal stress path is further transformed into the superposition of two parts,i.e..a constant stress ratio part and a constant mean stress part,which arc sufficiently close to the real stress path.T he plastic strain increments under the transformed paths arc determined separately,and then the plastic strain under any path is *** on the instantaneous loading line of normally consolidated soil,a reference state line is proposed to determine the overconsolidation ratio and creep time of *** overconsolidation ratio is introduced into the viscous How rule to obtain the viscous strain *** strcss-strain-timc relationship for triaxial compression condition is extended to 3D stress condition by the transformed stress *** proposed model adopts only seven material parameters and each of them has a clear physical ***parisons with test results demonstrate that the model can not only reasonably predict the plastic strain under typical stress paths of excavation,but adequately capture the time-dependent behaviours of soils,including creep,stress relaxation and strain rate effect.

关键词： soils clastic-plastic-viscous constitutive model stress path dependency reference stale line creep stress relaxation

木瓜蛋白酶与石膏制动建立兔膝骨关节炎模型的比较

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广东医学 2017年第14期38卷 2114-2118页

作者：陈达彭力平廖州伟李媛胡烈奎余阗马笃军深圳市中医院骨一科广东深圳518033

目的比较木瓜蛋白酶关节腔注射与关节石膏伸直位制动建立兔膝骨关节炎模型的效果。方法将21只实验兔采用随机区组分组法分为正常组、木瓜蛋白酶组及石膏组,每组7只。木瓜蛋白酶组予6%木瓜蛋白酶生理盐水溶液于实验开始第1、4、7天行右... 详细信息

目的比较木瓜蛋白酶关节腔注射与关节石膏伸直位制动建立兔膝骨关节炎模型的效果。方法将21只实验兔采用随机区组分组法分为正常组、木瓜蛋白酶组及石膏组,每组7只。木瓜蛋白酶组予6%木瓜蛋白酶生理盐水溶液于实验开始第1、4、7天行右膝关节腔注射,注射结束4周后造模完成;石膏组予膝关节伸直位固定6周;记录实验期间动物不良情况发生率,造模完成后处死实验兔,取软骨标本进行大体观察、Pelletier评分、Mankin's评分,免疫组化测定软骨Ⅱ型胶原蛋白含量,ELISA法检测血清和关节液中肿瘤坏死因子-α(TNF-α)、软骨寡聚基质蛋白(COMP)以及基质金属蛋白酶-3(MMP-3)的含量。结果大体观察显示木瓜蛋白酶组与石膏组均出现关节肿胀、关节间隙变窄、软骨缺损、滑膜增生硬化、炎症改变、骨赘形成;Pelletier评分、Mankin's评分、Ⅱ型胶原蛋白含量、血清和关节液中TNF-α、COMP以及MMP-3的含量,木瓜蛋白酶组、石膏组与正常组比较,差异均有统计学意义(P0.05)。木瓜蛋白酶组动物不良情况发生率明显低于石膏组,差异有统计学意义(P<0.01)。结论木瓜蛋白酶关节腔注射与石膏关节伸直位制动均能成功建立膝骨关节炎模型,但木瓜蛋白酶关节腔注射法更为快捷、简便,并发情况少,可行性好。

关键词：木瓜蛋白酶石膏制动膝骨关节炎动物模型