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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 533-540页

作者：郝留成 MIAO Xiaojun LI kai zhong Jianying 涂兵田 YANG Zhangfu 王皓 Pinggao Group Co. LtdPingdingshan 467001China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 430070China School of Materials Science and Engineering Anhui University of Science and TechnologyHuainan 232001China

A series of spinel-type Mg_(0.25-x)Al_(2.57)O_(3.79)N_(0.21):xMn^(2+)(MgAlON:xMn^(2+))phosphors were synthesized by the solid-state reaction *** transparent ceramic phosphors were fabricated by pressureless sintering followed by hot-isostatic pressing(HIP).The crystal structure,luminescence and mechanical properties of the samples were systematically *** transparent ceramic phosphors with tetrahedrally coordinated Mn^(2+)show strong green emission centered around 515 nm under blue light *** the Mn^(2+)concentration increases,the crystal lattice expands slightly,resulting in a variation of crystal field and a slight red-shift of green emission *** weak absorption peaks in the transmittance spectra originate from the spin-forbidden ^(4)T_(1)(^(4)G)→^(6)A_(1) transition of Mn^(2+).The decay time was found to decrease from 5.66 to 5.16 ms with the Mn^(2+)*** present study contributes to the systematic understanding of crystal structure and properties of MgAlON:xMn^(2+)green-emitting transparent ceramic phosphor which has a potential application in high-power light-emitting diodes.

关键词： transparent ceramic phosphor green emission MgAlON photoluminescence

TA2/Q235B复合板不同作用面成形极限及界面损伤行为

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Transactions of Nonferrous Metals Society of China 2024年第7期34卷 2181-2191页

作者：张志雄张斯沫班晓磊赵雪霞任忠凯韩建超张长江林鹏王涛王天翔太原理工大学机械与运载工程学院太原030024 太原理工大学金属成形技术与重型装备全国重点实验室太原030024 太原理工大学先进金属复合材料成形技术与装备教育部工程研究中心太原030024 太原理工大学材料科学与工程学院太原030024 山西太钢不锈钢精密带钢有限公司太原030006

采用Nakazima实验法对不同尺寸的退火态TA2/Q235B复合板样品进行胀形实验,研究不同作用面对TA2/Q235B复合板的成形极限和界面损伤行为的影响。结果表明,当凹模与碳钢侧接触时,由于接触材料、界面变形协调能力和应变状态的不同,复合板的... 详细信息

采用Nakazima实验法对不同尺寸的退火态TA2/Q235B复合板样品进行胀形实验,研究不同作用面对TA2/Q235B复合板的成形极限和界面损伤行为的影响。结果表明,当凹模与碳钢侧接触时,由于接触材料、界面变形协调能力和应变状态的不同,复合板的胀形高度和成形极限增加,其中R140试样的极限拱高达到最大值(46.17 mm),R60和R180试样在3个方向上的厚度减薄量和界面裂纹更大。此外,由于硬度和拉应力不同,两组样品中所有的水平和斜向孔都向纯钛侧延伸。

关键词： TA2/Q235B复合板胀形行为成形极限作用面界面损伤行为

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随机森林在气象网络入侵检测中的应用

自动化技术与应用 2024年第7期43卷 129-133页

作者：赵忠凯王祝先韩书新董洋关兴民黑龙江省气象数据中心黑龙江哈尔滨150030 黑龙江省生态气象中心黑龙江哈尔滨150030

随着气象业务信息化程度的加深,气象网络在数据传输、处理和共享方面的作用越来越重要。然而,这也使得气象系统网络面临更多的安全威胁。近些年机器学习和人工智能技术迅猛发展,为气象信息系统网络安全提供了新的解决方案。为此提出基... 详细信息

随着气象业务信息化程度的加深,气象网络在数据传输、处理和共享方面的作用越来越重要。然而,这也使得气象系统网络面临更多的安全威胁。近些年机器学习和人工智能技术迅猛发展,为气象信息系统网络安全提供了新的解决方案。为此提出基于随机森林算法的气象网络的入侵检测模型,并借助仿真实验验证模型的有效性。在仿真实验中讨论数据的预处理方法包括类别特征的独热编码,归一化以及样本不平衡的重采样技术。仿真实验表明随机森林在网络入侵检测准确率和效率都要高于K近邻算法和决策树算法,为气象平台网络安全防护提供一种新思路和新模式。

关键词：入侵检测气象网络安全随机森林

软土地区隧道-土体-地表结构筏板基础地震响应分析

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地基处理 2024年第S1期6卷 22-30页

作者：黄忠凯叶诗瑛张冬梅周文鼎仝跃同济大学岩土及地下工程教育部重点实验室上海200092 同济大学土木工程学院地下建筑与工程系上海200092 云南省交通规划设计研究院有限公司云南昆明650041

以上海地区典型的下穿隧道-土体-地表结构筏板基础系统为研究对象,建立了相应的非线性动力有限元模型。考虑隧道埋深、土体本构模型以及地表结构3个因素,采用ABAQUS软件,系统研究了在地震荷载作用下隧道对地表结构筏板基础的影响,同时... 详细信息

以上海地区典型的下穿隧道-土体-地表结构筏板基础系统为研究对象,建立了相应的非线性动力有限元模型。考虑隧道埋深、土体本构模型以及地表结构3个因素,采用ABAQUS软件,系统研究了在地震荷载作用下隧道对地表结构筏板基础的影响,同时也揭示了地表结构对隧道横截面变形及衬砌动态内力的影响特征。结果表明,地震荷载作用下筏板基础会产生显著的沉降及转角,基础两端的土体产生显著的塑性应变区,且浅埋隧道所产生的影响大于深埋隧道;考虑筏板基础会引起隧道结构变形和衬砌动态内力的显著增加,筏板基础的存在对浅埋隧道的地震响应影响要大于深埋隧道,而选用黏弹性土体本构模型进行分析的隧道地震响应显著小于黏弹塑性模型的分析结果,说明相互作用的复杂体系,其地震响应分析中考虑土体塑性的重要性。

关键词：隧道地表结构筏板基础动态响应黏弹性分析黏弹塑性分析

A retrospective study on sperm cryopreservation in 1034 patients diagnosed with cancer in southern China

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Asian Journal of Andrology 2023年第4期25卷 499-504页

作者： Qi-Ling Wang Gui-Fang Ye kai-Xin zhong Xin Wu Wei-Xin Lin Lu-Lu Luo Xin-Zong Zhang Wei-Jie Zhu NHC Key Laboratory of Male Reproduction and Genetics Guangzhou 510600China Department of Andrology Guangdong Provincial Reproductive Science InstituteGuangdong Provincial Fertility HospitalGuangzhou 510600China Human Sperm Bank of Guangdong Province Guangzhou 510600China Institute of Reproductive Immunology College of Life Science and TechnologyJinan UniversityGuangzhou 510632China

Sperm cryopreservation is an effective fertility preservation method for cancer patients before anticancer treatments. However, thereare little data on fertility preservation in large cohorts of patients with cancer in southern China. This retrospective cross-sectionalstudy aimed to assess the fertility preservation status of 1034 newly diagnosed male patients with cancer in the Human SpermBank of Guangdong Province in southern China (Guangzhou, China). Of these, 302 patients had reproductive system tumors,mostly testicular cancers (99.0%), and 732 had other tumors, including lymphoma (33.1%), gastrointestinal cancer (16.3%),nasopharyngeal carcinoma (15.7%), leukemia (7.7%), sarcoma (3.6%), and others (23.6%). Patients with reproductive systemtumors had lower sperm concentration and prefreezing and post-thawing progressive motility than those with non-reproductive systemtumors (all P < 0.001). Differences in sperm concentration, progressive motility, and normal morphology rate were observed betweenpatients with and without anticancer surgery before sperm cryopreservation (all P < 0.05). As of April 30, 2022, 63 patients usedtheir cryopreserved sperm for assisted reproductive technology treatments and 39 pregnancies were achieved. This study providesvaluable data on the fertility preservation status in newly diagnosed cancer patients in southern China, demonstrating that patientswith reproductive system tumors had poor sperm quality for their pretreatment fertility preservation.

关键词： cancer fertility preservation sperm cryopreservation sperm quality

Variation characteristics of acid rain in Zhuzhou,Central China over the period 2011-2020

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Journal of Environmental Sciences 2024年第4期138卷 496-505页

作者： Jiahao Ren Liquan Zhu Xi Zhang Yuqian Luo Xuecai zhong Bowen Li Yuwen Wang kai Zhang State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Zhuzhou Environment Monitoring Center Zhuzhou 412000China Faculty of Environmental Engineering The University of Kitakyushu1–1 HibikinoWakamatsuKitakyushuFukuoka 808-0135Japan College of Natural Resources and Environment South China Agricultural UniversityGuangzhou 510642China

Zhuzhou was one of the most polluted cities in China with the serious acid *** to the implementation of air pollution control measures from 2016 to 2018,the acid rain pollution in this city has *** order to understand the recent situation,a comprehensive study on the acid rain was carried out from January 2011 to December *** pH values during the study period varied from 3.3 to 7.5,with a volume-weighted mean value of *** predominant acidic components of the precipitation were SO_(4)^(2-)and NO_(3)^(-),accounting for 89.3% of the total *** ratio of non-sea-salt SO_(4)^(2-)to NO_(3)^(-)showed a decreasing trend,revealing that the pollution type of acid rain changed from sulfuric acid type to sulfuric acid and nitric acid compound *** correlation analysis(p<0.05)showed that SO_(4)^(2-)was positively correlated with NH_(4)^(+),Ca^(2+),and Mg^(2+);hence,it predominated in precipitation as(NH_(4))_(2)SO_(4),NH_(4)HSO_(4),CaSO_(4),and MgSO_(4).Significant positive correlation of Ca^(2+)with Mg^(2+)shows that they may originated mainly from *** positive correlation between SO_(4)^(2-)and F^(-)and Cl^(-)indicate that their source may be related to the non-ferrous metal smelting industry in *** correlation analysis shows that emissions from the non-ferrous metal smelting industry in the area have a large significant on SO_(4)^(2-)and F^(-)in precipitation,while Cl^(-)may still be emitted from other anthropogenic sources.

关键词： Acid rain pH Chemical composition Neutralization factor Correlation analysis

Influence of pore structure on thermal stress distribution inside coal particles during primary fragmentation

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Particuology 2024年第2期85卷 49-61页

作者： kai Qiao Shan zhong Siyang Tang Ke Yang Hairong Yue Kui Ma Lei Song Bin Liang School of Chemical Engineering Sichuan UniversityChengdu610065China Institute of New Energy and Low-carbon Technology Chengdu610207China

Thermal stress is an important reason of coal particle primary fragmentation,during which the role of pore structure is *** stress induced fragmentation experiments were conducted with low volatile coal/char particles,and the results show that the fragmentation severity enhances with increasing *** porous thermal stress models were developed with finite element method,and the influences of the pore shape,size,position and porosity on the thermal stress were *** maximum thermal stress inside particle increases with pore curvature,the pore position affects the thermal stress more significantly at the particle center and *** expectation of the maximum tensile thermal stress linearly increases with porosity,making the particles with higher porosity easier to fragment,contrary to the conclusion deduced from the devolatilization *** obtained results are valuable for the analysis of different thermal processes concerning the thermal stresses of the solid feedstocks.

关键词： Coal particle Primary fragmentation Thermal stress Pore structure Porosity

Subicular Pyramidal Neurons: A Key to Unlock the ‘‘Black Box’’of Drug Resistance in Temporal Lobe Epilepsy

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Neuroscience Bulletin 2019年第6期35卷 1123-1125页

作者： Zhe Hu Xinyi Wang kai zhong Department of Clinical Medicine Hangzhou Medical CollegeHangzhou 310053China Department of Pharmacology School of Basic Medical Sciences and Forensic MedicineHangzhou Medical CollegeHangzhou 310053China

Drug resistance is one of the most serious issues in *** using various appropriate anti-epileptic drugs(AEDs),30%of epilepsy patients are still *** percentage of resistance in temporal lobe epilepsy(TLE)is even higher[1].Although epilepsy surgery and deep brain stimulation are emerging as alternative therapeutic strategies,the curative outcome is still unsatisfactory.

关键词： epilepsy stimulation drugs

The Role of Processing Solvent on Morphology Optimization for Slot-Die Printed Organic Photovoltaics

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Chinese Journal of Polymer Science 2023年第6期41卷 842-850,I0005页

作者： Lei Wang Jun-Zhe Zhan Wen-kai zhong Lei Zhu Guan-Qing Zhou Tian-Yu Hao Ye-Cheng Zou Zhen-Hua Wang Gang Wei Yong-Ming Zhang Feng Liu School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Frontiers Science Center for Transformative Molecules Center of Hydrogen ScienceSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240China State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future Hydrogen Energy Materials Company Zibo 256401China

The morphology manipulation of the active layers is important for improving the performance of organic photovoltaics(OPVs).The choice of processing solvent has great impact on the crystallization and phase separation during film formation,since solvent properties,including solvent effect on molecular crystallization,boiling point,and interaction parameters,can directly change the evolution pathways associated with thermodynamics and ***,revealing the underlying solvent-regulated morphology mechanism is potential to provide guiding strategies for device *** this study,chloroform,chlorobenzene,and toluene are used to process PM6:Y6 blends by slot-die printing to fabricate OPV *** chloroform printed film forms a fibrillar network morphology with enhanced crystallization,facilitating exciton dissociation,charge transport and extraction,resulting in an optimal power conversion efficiency of 16.22%.However,the addition of the additive chloronaphthalene in chloroform solution leads to over-crystallization of Y6,and thus,increasing domain size that exceeds the exciton diffusion length,resulting in lower device *** addition,both the chlorobenzene and toluene suppress the crystallization of Y6,which drastically decreased short-circuit current and fill *** results demonstrate the important role of processing solvent in dictating film morphology,which critically connects with the resultant printed OPV performance.

关键词： crystallization chloroform film

Strong light–matter interactions based on excitons and the abnormal all-dielectric anapole mode with both large field enhancement and low loss

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Photonics Research 2024年第4期12卷 854-864页

作者： YAN-HUI DENG YU-WEI LU HOU-JIAO ZHANG zhong-HONG SHI ZHANG-kai ZHOU XUE-HUA WANG State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou 510275China Quantum Science Center of Guangdong–Hong Kong–Macao Greater Bay Area(Guangdong) Shenzhen 518045China

The room temperature strong coupling between the photonic modes of micro/nanocavities and quantum emitters(QEs) can bring about promising advantages for fundamental and applied *** the electric fields(EFs) by using plasmonic modes and reducing their losses by applying dielectric nanocavities are widely employed approaches to achieve room temperature strong ***,ideal photonic modes with both large EFs and low loss have been ***,we propose the abnormal anapole mode (AAM),showing both a strong EF enhancement of~70-fold (comparable to plasmonic modes) and a low loss of 34 meV,which is much smaller than previous records of isolated all-dielectric *** realizing strong coupling,we further show that by replacing the normal anapole mode with the AAM,the lasing threshold of the AAM-coupled QEs can be reduced by one order of magnitude,implying a vital step toward on-chip integration of nanophotonic devices.

关键词： dielectric mode coupling