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Wideband chaos generation using a VCSEL with intensity modulation optical injection for random number generation

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Science China(Information Sciences) 2024年第6期67卷 457-458页

作者： Yu HUANG Shuangquan GU Yuhang FENG Yigong YANG Shuiying XIANG pei zhou Nianqiang LI School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University State Key Laboratory of Integrated Service Networks Xidian University Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University

Physical random numbers have been widely used in modern network society,such as the generation of cryptographic keys for classical and quantum cryptography systems[1].Among the many sources of physical entropy,chaotic semiconductor lasers have attracted wide attention due to their desired characteristics including larger bandwidth,low cost,and monolithic integration[2].

关键词： Optical signal processing

Myricetin induces M2 macrophage polarization to alleviate renal tubulointerstitial fibrosis in diabetic nephropathy via PI3K/Akt pathway

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World Journal of Diabetes 2024年第1期15卷 105-125页

作者： Wei-Long Xu pei-pei zhou Xu Yu Ting Tian Jin-Jing Bao Chang-Rong Ni Min Zha Xiao Wu Jiang-Yi Yu Department of Endocrinology Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210000Jiangsu ProvinceChina Department of Pharmacy Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210000Jiangsu ProvinceChina Department of Pneumology Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210000Jiangsu ProvinceChina

BACKGROUND Development of end-stage renal disease is predominantly attributed to diabetic nephropathy(DN).Previous studies have indicated that myricetin possesses the potential to mitigate the pathological alterations observed in renal ***-theless,the precise molecular mechanism through which myricetin influences the progression of DN remains *** To investigate the effects of myricetin on DN and explore its potential therapeutic *** Db/db mice were administered myricetin intragastrically on a daily basis at doses of 50 mg/kg or 100 mg/kg for a duration of 12 ***,blood and urine indexes were assessed,along with examination of renal tissue *** morphology and fibrosis were evaluated using various staining techniques including hematoxylin and eosin,periodic acid–Schiff,Masson’s trichrome,and ***,high-glucose culturing was conducted on the RAW 264.7 cell line,treated with 25 mM myricetin or co-administered with the PI3K/Akt inhibitor LY294002 for a period of 24 *** both in vivo and in vitro settings,quantification of inflammation factor levels was conducted using western blotting,real-time qPCR and *** In db/db mice,administration of myricetin led to a mitigating effect on DN-induced renal dysfunction and ***,we observed a significant reduction in expressions of the kidney injury markers kidney injury molecule-1 and neutrophil gelatinase associated lipocalin,along with a decrease in expressions of inflammatory cytokine-related ***,myricetin treatment effectively inhibited the up-regulation of tumor necrosis factor-alpha,interleukin-6,and interluekin-1βinduced by high glucose in RAW 264.7 ***,myricetin modulated the M1-type polarization of the RAW 264.7 *** docking and bioinformatic analyses revealed Akt as the target of *** protective effect of myricetin was nullified upon blocking the polarization of RAW 264.7 via inh

关键词： Myricetin Diabetic nephropathy PI3K/Akt pathway Renal tubulointerstitial fibrosis Macrophage Polarization

Prenatal ultrasound diagnosis of fetal maxillofacial teratoma:Two case reports

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World Journal of Clinical Oncology 2024年第9期15卷 1245-1250页

作者： Chuan-Fen Gao pei zhou Chen Zhang Department of Ultrasound The First Affiliated Hospital of Anhui Medical UniversityHefei 230022Anhui ProvinceChina Prenatal Diagnosis Center The First Affiliated Hospital of Anhui Medical UniversityHefei 230022Anhui ProvinceChina School of 1^(st)Clinic Medicine Anhui Medical UniversityHefei 230022Anhui ProvinceChina

BACKGROUND Facial teratoma is a rare benign tumor that accounts for about 1.6%of all teratomas and can be diagnosed by prenatal ultrasound(US).The purpose of this report was to describe our experience with the diagnosis of fetal facial teratoma by prenatal US at second trimester to provide a reference for clinical diagnosis of fetal maxillofacial *** SUMMARY We present two cases of patients with abnormal fetal facial findings on US at second trimester of pregnancy in our *** 1 was a 31-year-old G3 P1+1 female,with US revealing a heterogeneous echogenicity of 32 mm×20 mm×31 mm on the fetal face,most of it located outside the oral cavity and filling the root of the oral *** 2 was a 29-year-old G1P0 female,with fetal head and neck US revealing a cystic-solid echo mass measuring 42 mm×33 mm×44 mm,the upper edge of the lesion reaching the palate and filling the oral *** contours of the lesions were visualized using three-dimensional(3D)US *** patients decided to give up *** of the lesions were performed after induction of labor,and diagnosed as maxillofacial *** Fetal maxillofacial teratomas can be diagnosed by US in early pregnancy,allowing parents to expedite treatment decisions.

关键词： Fetal maxillofacial teratoma Prenatal ultrasound Diagnosis Ultrasound Case report

Estimating the Scarlet Fever Epidemics Using a Seasonal Autoregressive Fractionally Integrated Moving Average Model

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Biomedical and Environmental Sciences 2024年第3期37卷 336-340页

作者： WANG Yong Bin XUE Chen Lu zhou pei Ping ZHANG Bing Jie XU Chun Jie Department of Epidemiology and Health Statistics School of Public HealthThe First Affiliated Hospital of Xinxiang Medical UniversityXinxiang 453003HenanChina Beijing Key Laboratory of Antimicrobial Agents/Laboratory of Pharmacology Institute of Medicinal BiotechnologyChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

Scarlet fever(SF)is a common infectious disease caused by group A streptococcus(GAS)[1].During the 18th and 19th centuries,SF was a significant cause of mortality in children aged 5-15 years worldwide[2].The incidence and fatality rates of SF have decreased remarkably due to the widespread use of effective antibiotics and improvements in diet and sanitation[3].However,the recent resurgence of SF has sparked significant interest in infectious diseases[1,3].Given the insufficient understanding of the triggers that cause SF outbreaks and the absence of available vaccines to prevent GAS infection to date[1],effective prevention and control programs are needed to manage the ongoing spread of SF.

关键词： prevention mortality let

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中学生课堂参与问卷的编制与信效度检验

教学与管理 2024年第12期 60-64页

作者：周佩灵周悦河南大学教育学部河南开封475004 河南省学前教育研究中心河南开封475004

课堂参与是衡量学生学习效能和学校教育教学质量的关键指标。为实现学生学习提质增效的价值诉求,需要重识学生在课堂场域中参与的广度、程度和深度。在分析国内外相关文献的基础上结合半结构化访谈,明晰中学生课堂参与的内涵与理论框架... 详细信息

课堂参与是衡量学生学习效能和学校教育教学质量的关键指标。为实现学生学习提质增效的价值诉求,需要重识学生在课堂场域中参与的广度、程度和深度。在分析国内外相关文献的基础上结合半结构化访谈,明晰中学生课堂参与的内涵与理论框架。经过两轮的数据收集和分析,形成了包含课堂行为参与、课堂认知参与和课堂情感参与三个维度的“中学生课堂参与问卷”,共计32个题项。研究表明该问卷具有良好的信效度,符合测量学的各项要求,可作为测评中学生课堂参与水平和质量的有效工具。

关键词：中学生课堂参与学习效能教育教学质量

教师视角下特殊教育家校合作影响因素的质性研究

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现代特殊教育 2024年第12期 17-22,31页

作者：周沛武汉大学教育科学研究院武汉430072 广东省广州市番禺区培智学校广州512400

良好的家校合作不仅是我国特殊教育事业发展的战略所需,更是高质量特殊教育体系建设的重要基础。基于扎根理论的研究方法,从教师视角探究影响特殊教育家校合作的因素,以家长因素、教师因素和环境因素三大类属,教养方式、认知基础、投入... 详细信息

良好的家校合作不仅是我国特殊教育事业发展的战略所需,更是高质量特殊教育体系建设的重要基础。基于扎根理论的研究方法,从教师视角探究影响特殊教育家校合作的因素,以家长因素、教师因素和环境因素三大类属,教养方式、认知基础、投入程度、教师素养、工作负荷、学校保障、社区助力七大主范畴及其类属之间的关联构建理论模型,并依据理论模型的阐释提出了提高家长能动性以发挥家庭的主体作用、提升教师能力以创建家校合作共同体、增强环境支撑以构建家校支持同心圆的具体建议。

关键词：教师视角特殊教育家校合作质性研究

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基于注意力的多阶段点云补全网络

激光与光电子学进展 2024年第10期61卷 265-272页

作者：尹溪洋周佩朱江平四川大学计算机学院四川成都6100652.四川大学计算机学院四川成都610065 四川大学视觉合成图形图像技术重点学科实验室四川成都610065

点云补全指利用不完整点云数据重建完整三维模型的过程。现有的大多数点云补全方法受点云无序性和不规则性影响,难以有效地重建局部细节信息,进而影响补全精度。为解决这个问题,提出基于注意力的多阶段点云补全网络。设计了满足置换不... 详细信息

点云补全指利用不完整点云数据重建完整三维模型的过程。现有的大多数点云补全方法受点云无序性和不规则性影响,难以有效地重建局部细节信息,进而影响补全精度。为解决这个问题,提出基于注意力的多阶段点云补全网络。设计了满足置换不变性的金字塔式点云特征提取器以建立局部内点间的依赖以及不同局部间的相关性,在提取全局特征信息的同时加强对局部特征信息的提取。在点云重建过程中,采用由粗到精的方式,首先生成一个低分辨率的种子点云,然后逐步丰富种子点云的局部细节,得到更加精细且稠密的点云。在公开数据集PCN下进行的对比实验结果证明了所提网络能够有效重建局部细节信息,与现有方法相比,在补全精度上提升了至少5.98%。消融实验结果也进一步验证了所提注意力模块的有效性。

关键词：点云点云补全自注意力交叉注意力几何细节感知

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考虑采动效应的闭坑矿井水硫酸盐污染规律

煤田地质与勘探 2024年第4期52卷 89-100页

作者：齐跃明周沛周来蒋丹杨雨晴刘延卓中国矿业大学资源与地球科学学院江苏徐州221116 中国矿业大学环境与测绘学院江苏徐州221116

高硫煤矿闭坑后成为埋藏在地表以下深部的产酸污染场,对相邻含水层和周边环境造成了潜在危害,且因采动效应影响和矿井空间分布复杂导致相邻含水层的污染过程与污染程度评价困难。以某闭坑矿区为研究对象,选取SO_(4)^(2-)作为特征污染物... 详细信息

高硫煤矿闭坑后成为埋藏在地表以下深部的产酸污染场,对相邻含水层和周边环境造成了潜在危害,且因采动效应影响和矿井空间分布复杂导致相邻含水层的污染过程与污染程度评价困难。以某闭坑矿区为研究对象,选取SO_(4)^(2-)作为特征污染物,考虑多煤层采动裂隙对含水层结构的破坏影响,运用数值模拟技术对闭坑矿区酸性矿井水中SO_(4)^(2-)污染迁移特征进行研究,并分析流体扩散系数对含水层污染物运移的影响。结果表明:SO_(4)^(2-)在二叠系童子岩组砂岩含水层中水平迁移面积随时间增大而增大,增大速率逐渐减小,垂向渗透系数扩大10倍,空间变异性增强;闭坑5、10、15a后,最大水平迁移距离分别为215、414、612m,最大垂向迁移距离分别达到50、65、70m;而扩散系数越大,产酸时间越长,SO_(4)^(2-)迁移距离和污染范围将随之增大,相较于水平方向,垂向上SO_(4)^(2-)浓度变化对扩散系数的敏感度更高。基于模拟结果,结合闭坑矿区实际条件,针对性提出了“源头减量-过程阻断-末端治理”的综合防控与治理方案。研究结果将为该闭坑煤矿酸性矿井水污染治理与防控提供理论基础,也为其他同类矿井提供科学借鉴。

关键词：闭坑煤矿酸性矿井水硫酸盐导水裂隙带采动效应综合防控

1000MW火电机组循环入水温度对机组发电成本的影响

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电力设备管理 2024年第3期 232-234页

作者：周沛新天绿色能源股份有限公司

在凝汽式汽轮机组的热力循环中,对机组运行效率影响的因素较多,本文分析了影响汽轮机运行效率和经济性的相关因素,通过分析其中凝汽器真空度是常见的影响因素,而循环水温的变化是影响真空度变化的主要原因,因此循环水温的变化对火电机... 详细信息

在凝汽式汽轮机组的热力循环中,对机组运行效率影响的因素较多,本文分析了影响汽轮机运行效率和经济性的相关因素,通过分析其中凝汽器真空度是常见的影响因素,而循环水温的变化是影响真空度变化的主要原因,因此循环水温的变化对火电机组的运行经济性有较大影响。本文通过分析不同负荷下不同循环水入水温度对发电成本,为后续机组的经济运行提供帮助。

关键词：凝汽式汽轮机低压缸循环水发电成本