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Macroscopic Quantum Superposition States in a Model of Photon-Supersonic Phonon Interaction

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Chinese Physics Letters 2000年第7期17卷 504-506页

作者： CHAI JIN-hua WANG Yan-bang LU Yi-qun Anhui Institute of Optics and Fine Mechanics Chinese Academy of SciencesHefei 230031 Institute of Physics Chinese Academy of SciencesBeijing 100080

A model of photon-hypersonic phonon interaction is proposed. The evolution of macroscopic quantum superpo sition states is analyzed, including the wave function and number distribution. It is shown that a superpositio... 详细信息

关键词： phonon superposition quantum

Cooling Rate Sensitivity of RE-Containing Grain Refiner and Its Impact on the Microstructure and Mechanical Properties of A356 Alloy

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Acta Metallurgica Sinica(English Letters) 2016年第5期29卷 414-421页

作者： hua-Rui Zhang Zhen-bang Liu Zi-Zhuo Li Guo-Wei Li Hu Zhang School of Materials Science and Engineering BeihangUniversityBeijing 100191China Beijing Key Laboratory for Advanced Functional Materialand Thin Film Technology Beihang UniversityBeijing 100191China SMX Dicastal Wheel Manufacture Company Sanmenxia 472000China

The cooling rate sensitivities of A1TiB, RE and A1TiB-RE refiners were investigated using laboratory experiments and the actual industrial applications of A356 automotive wheel via low pressure die casting technology. Their impact mechanisms on the microstructure and mechanical properties of the A356 alloy were discussed. The results demonstrated that the AITiB-RE refiner possessed most effective and synergetic refinement effects compared to the individual A1TiB or RE refiners. The A1TiB-RE refiner exhibited the least sensitivity to the cooling rate changes than the other refiners. The comprehensive properties of alloy wheel refined by the A1TiB-RE refiner were improved significantly. The tensile strength, yield strength, and elongation of wheel spoke improved by approximately 11.3%, 10.8% and 44.1%, respectively. The property difference values of the tensile strength, yield strength, and elongation in different positions of the wheel decreased from 14.8%, 31.2% and 47.7% to 8.6%, 27.1% and 30.9%, respectively.

关键词： Grain refinement Cooling rate sensitivity A356 alloy Microstructure Mechanicalproperties

Identification and Characterization of Side Population Cells in Human Lung Adenocarcinoma SPC-A1 Cells

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Chinese Journal of Cancer Research 2010年第3期22卷 211-217页

作者： Yan-liang Zhu Long-bang Chen Jing-hua Wang Xin-yi Xia Department of Oncology Department of Clinical Laboratory Centre Jinling HospitalMedical College of Nanjing University Nanjing 210002 China

Objective：There has been an increasing interest in recent years in the role of stem *** an extensive understanding of their biology,a major role for stem cells in the malignant process has been proposed and the existence of cancer stem cells（CSCs） has been confirmed in hematopoietic malignancies and solid organ malignancies including brain cancer,breast,prostate,colon,and pancreatic *** cancer is the leading cause of cancer mortality in most large cities of *** is possible that lung cancer contains cancer stem cells responsible for its *** aim of this study is to identify,characterize and enrich the CSC population that drives and maintains lung adenocarcinoma growth and ***：Side population（SP） cell analysis and sorting were applied on human lung adenocarcinoma cell line and an attempt to further enrich them by preliminary serum-free culture before fluorescence activated cell sorting（FACS） was *** cell properties of SP cells were evaluated by their proliferative index,colony-forming efficiency,tumorigenic potential,bi-differentiation capacity and the expression of common stem cell surface ***：Lung cancer cells could grow in a serum-free Medium（SFM） as non-adherent spheres similar to neurospheres or *** proportion of SP cells in cell spheres was significantly higher than that in cells grown as *** cells had a greater proliferative index,a higher colony-forming efficiency and a greater ability to form tumor in *** cells were both CCA positive and SP-C positive while non-SP cells were only SP-C *** cytometric analysis of cell phenotype showed that SP cells expressed CD133 and CD44,the common cell surface markers of cancer stem cells,while non-SP cells only expressed ***：SP cells existed in human lung adenocarcinoma cell lines and they could be further enriched by preliminary serum-free culture before FACS *** cells possessed the properties of cancer st

关键词： Cancer stem cells Side population SPC-A1 cell line

Triarylborane π-electron systems with intramolecular charge-transfer transitions

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Chinese Chemical Letters 2016年第8期27卷 1131-1138,1464页

作者： Zuo-bang Sun Sheng-Yong Li Zhi-Qiang Liu Cui-hua Zhao School of Chemistry and Chemical Engineering Key Laboratory of Special Functional Aggregated Materials Ministry of EducationShandong University State Key Laboratory of Crystal Materials Shandong University

The incorporation of B element into π-conjugated system is an efficient strategy to tune the steric and electronic structure and thus optoelectronic properties of π-electron *** vacant p orbital on the tricoordinate B center makes it exhibit several electronic and steric features,such as electron-accepting ability through p-π~＊ conjugation,the high Lewis acidity to coordinate with Lewis bases,as well as the steric bulk arising from the aryl substituent on the B center to get enough kinetic *** a result,the boryl group is a very unique electron *** an electron-donating amino group is present,the triarylboranes would display intense intramolecular charge transfer transitions,which lead to interesting optoelectronic properties and great *** short review summarizes the recent progress in π-electron systems,which contain both B and N elements and thus display intramolecular charge-transfer *** triarylboranes are introduced based on their structural features,including the linear π-system with boryl and amino groups at the terminal positions,the lateral borylsubstituted π-system with amino groups at the terminal positions,the biphenyl π-system with an amino and a boryl groups at o,o＇-positions,nonconjugated U- and V-shaped π-system,macrocylcic π-system with B and N embedded in the ring,B,N-bridged ladder-type π-system,as well as the polycyclicπ-system with B embedded in the center.

关键词： Triarylborane Electron-acceptor Electron-donor Charge-transfer

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阀门设计计算中安全性与经济性权衡的探讨

阀门 2024年第8期 1015-1021页

作者：康邦华杜利波梁素芳河北远大阀门集团有限公司河北邢台055350

在阀门设计的复杂过程中,设计者对计算公式来源的追溯和参数变量的精准选择均面临诸多挑战。这些选择不仅直接关联到阀门的安全性能,同时也深刻影响着其经济效益。本文从安全性和经济性的双重维度出发,对阀门设计中常用的壁厚计算公式... 详细信息

在阀门设计的复杂过程中,设计者对计算公式来源的追溯和参数变量的精准选择均面临诸多挑战。这些选择不仅直接关联到阀门的安全性能,同时也深刻影响着其经济效益。本文从安全性和经济性的双重维度出发,对阀门设计中常用的壁厚计算公式进行了细致探讨,并对不同标准下的许用应力安全系数规定以及压力-温度额定值设定进行了对比分析。这些研究成果为阀门设计的优化和结构的完善提供了宝贵的参考依据,具有重要的实践价值。

关键词：阀门设计计算许用应力

Artificial intelligence assisted pterygium diagnosis:current status and perspectives

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International Journal of Ophthalmology(English edition) 2023年第9期16卷 1386-1394页

作者： bang Chen Xin-Wen Fang Mao-Nian Wu Shao-Jun Zhu Bo Zheng bang-Quan Liu Tao Wu Xiang-Qian Hong Jian-Tao Wang Wei-hua yang School of Information Engineering Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina Zhejiang Province Key Laboratory of Smart Management and Application of Modern Agricultural Resources Huzhou 313000Zhejiang ProvinceChina College of Digital Technology and Engineering Ningbo University of Finance&EconomicsNingbo 315000Zhejiang ProvinceChina Huzhou Institute Zhejiang University of TechnologyHuzhou 313000Zhejiang ProvinceChina Shenzhen Eye Institute Shenzhen Eye HospitalJinan UniversityShenzhen 518040Guangdong ProvinceChina

Pterygium is a prevalent ocular disease that can cause discomfort and vision *** and accurate diagnosis is essential for effective ***,artificial intelligence(AI)has shown promising potential in assisting clinicians with pterygium *** paper provides an overview of AI-assisted pterygium diagnosis,including the AI techniques used such as machine learning,deep learning,and computer ***,recent studies that have evaluated the diagnostic performance of AI-based systems for pterygium detection,classification and segmentation were *** advantages and limitations of AI-assisted pterygium diagnosis and discuss potential future developments in this field were also *** review aims to provide insights into the current state-of-the-art of AI and its potential applications in pterygium diagnosis,which may facilitate the development of more efficient and accurate diagnostic tools for this common ocular disease.

关键词： pterygium intelligent diagnosis artificial intelligence deep learning machine learning

黄河茨哈峡导流洞进口边坡稳定性综合评价及处置优化

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中国农村水利水电 2024年第6期 231-238页

作者：许建军周恒高乔裕刘世隆段军邦张峰华青海黄河上游水电开发有限责任公司青海西宁810000 中国电建集团西北勘测设计研究院有限公司陕西西安710065 武汉大学水资源工程与调度全国重点实验室湖北武汉430072

复杂地质条件下边坡稳定性受结构面、岩体性质等因素影响明显,其准确评价对边坡施工安全至关重要。依托黄河茨哈峡导流洞进口边坡施工工程,提出了一套综合赤平投影理论、二维极限平衡法与三维极限平衡法的边坡稳定性综合评价方法。首先... 详细信息

复杂地质条件下边坡稳定性受结构面、岩体性质等因素影响明显,其准确评价对边坡施工安全至关重要。依托黄河茨哈峡导流洞进口边坡施工工程,提出了一套综合赤平投影理论、二维极限平衡法与三维极限平衡法的边坡稳定性综合评价方法。首先基于赤平投影理论定性地描述了具有复杂结构面的导流洞进口边坡4#倾倒体失稳块体;随后分别采用二维极限平衡法与三维极限平衡法对施工期逐层开挖过程诱发边坡失稳风险进行了分析;最后根据“少开挖+强支护”的设计原则,从多方法综合评价和循环优化的角度,提出将原破碎体全部挖除的大开挖方案优化为保留部分破碎体的小开挖方案,并从安全性与经济性的角度对优化方案进行了评价。计算结果表明大开挖方案边坡稳定性安全系数约为1.17~1.19,小开挖方案安全系数约为1.078,大开挖方案边坡安全性高于小开挖方案;在对小开挖方案进行支护优化后边坡稳定性安全系数提高至1.159~1.183,边坡稳定性由临界稳定变为稳定,支护优化效果显著。综合边坡开挖安全性与经济性评价结果可见,所提“少开挖+强支护”边坡开挖方案符合相关规范安全控制标准,具有较好的经济效益与工程价值,可为相关工程提供参考。

关键词：边坡稳定性赤平投影法极限平衡分析法支护措施优化

Research on classification method of high myopic maculopathy based on retinal fundus images and optimized ALFA-Mix active learning algorithm

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International Journal of Ophthalmology(English edition) 2023年第7期16卷 995-1004页

作者： Shao-Jun Zhu Hao-Dong Zhan Mao-Nian Wu Bo Zheng bang-Quan Liu Shao-Chong Zhang Wei-hua yang Huzhou University School of Information EngineeringHuzhou 313000Zhejiang ProvinceChina Zhejiang Province Key Laboratory of Smart Management&Application of Modern Agricultural Resources Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina College of Digital Technology and Engineering Ningbo University of Finance&EconomicsNingbo 315175Zhejiang ProvinceChina Shenzhen Eye Institute Shenzhen Eye HospitalJinan UniversityShenzhen 518048Guangdong ProvinceChina

AIM:To conduct a classification study of high myopic maculopathy(HMM)using limited datasets,including tessellated fundus,diffuse chorioretinal atrophy,patchy chorioretinal atrophy,and macular atrophy,and minimize annotation costs,and to optimize the ALFA-Mix active learning algorithm and apply it to HMM ***:The optimized ALFA-Mix algorithm(ALFAMix+)was compared with five algorithms,including *** models,including Res Net18,were *** algorithm was combined with four models for experiments on the HMM *** experiment consisted of 20 active learning rounds,with 100 images selected per *** algorithm was evaluated by comparing the number of rounds in which ALFA-Mix+outperformed other ***,this study employed six models,including Efficient Former,to classify *** best-performing model among these models was selected as the baseline model and combined with the ALFA-Mix+algorithm to achieve satisfactor y classification results with a small ***:ALFA-Mix+outperforms other algorithms with an average superiority of 16.6,14.75,16.8,and 16.7 rounds in terms of accuracy,sensitivity,specificity,and Kappa value,*** study conducted experiments on classifying HMM using several advanced deep learning models with a complete training set of 4252 *** Efficient Former achieved the best results with an accuracy,sensitivity,specificity,and Kappa value of 0.8821,0.8334,0.9693,and 0.8339,***,by combining ALFA-Mix+with Efficient Former,this study achieved results with an accuracy,sensitivity,specificity,and Kappa value of 0.8964,0.8643,0.9721,and 0.8537,***:The ALFA-Mix+algorithm reduces the required samples without compromising *** to other algorithms,ALFA-Mix+outperforms in more rounds of *** effectively selects valuable samples compared to other *** HMM classification,combining ALFA-Mix+with Efficient Former enhances

关键词： high myopic maculopathy deep learning active learning image classification ALFA-Mix algorithm

Hydrogen Pick-Up During Electroslag Remelting Process

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Journal of Iron and Steel Research International 2011年第4期18卷 19-23页

作者： JIANG Zhou-hua DONG Yan-wu LIANG Lian-ke LI Zheng-bang School of Materials and Metallurgy Northeastern University Shenyang 110004 Liaoning China Central Iron and Steel Research Institute Beijing 100081 China

The pick-up of hydrogen during electroslag remelting process for several slags consisting of CaF2-Al2O3-CaO-SiO2-MgO had been *** laboratory-scale remelting experiments had been carried out in open air and water-free argon atmosphere,and then the influencing factors were *** had been found that the hydrogen content in steel varied with different slag *** compositions and state of slag had significant effect on the hydrogen level in *** return slag and premelted slag could avoid the hydrogen pick-up especially in the early stages of the ***,premelted slag was the optimum state to control the hydrogen pick-up in *** results indicated that water-free argon atmosphere was very favorable to the control of hydrogen in steel in the normal remelting period.

关键词： electroslag remelting hydrogen calcium fluoride premelted slag protective atrriosphere