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太阳能电池基本特性测定实验

物理实验 2004年第11期24卷 6-8,11页

作者：茅倾青潘立栋陈骏逸陆申龙复旦大学物理系上海200433

对传统的“太阳能电池伏安特性测量”实验进行改进 ,利用光功率测定仪和滤色片 ,定量分析在不同光强照射下以及在不同截止波长的光照射下 ,太阳能电池特性参量的变化规律 ,并测量了半导体材料的禁带宽度 .

关键词：太阳能电池开路电压短路电流填充因子禁带宽度

Multiparametric ultrasound for the assessment of testicular lesions with negative tumoral markers

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Asian Journal of Andrology 2023年第1期25卷 50-57页

作者： Hui Liu Lin dong Li-Hua Xiang Guang Xu Jing Wan Yan Fang Shi-Si Ding Ye Jin Li-Ping Sun Hui-Xiong Xu Department of Medical Ultrasound Center of Minimally Invasive Treatment for TumorShanghai Tenth People's HospitalSchool of MedicineTongji UniversityShanghai 200072China Ultrasound research and Education Institute Clinical Research Center for Interventional MedicineSchool of MedicineTongji UniversityShanghai 200072China shanghai Engineering research center of Ultrasound Diagnosis and Treatment Shanghai 200072China National Clinical research center for Interventional Medicine Shanghai 200072China Department of Ultrasound Zhongshan HospitalFudan UniversityInstitute of Ultrasound in Medicine and EngineeringShanghai 200032China

The purpose of this study was to evaluate the diagnostic performance of multiparametric ultrasound(mpUS;grayscale US,color Doppler US,strain elastography,and contrast-enhanced US)in the assessment of testicular lesions with negative tumoral *** imaging data,patient age,serum tumor markers,scrotal pain,cryptorchidism,and related clinical information were retrospectively collected for patients who underwent mpUS examination between January 2013 and December *** results or follow-up examinations were used as the reference *** total,83 lesions from 79 patients were included in the ***-six patients were finally diagnosed with benign tumors,and 23 patients were ultimately diagnosed with malignant ***-square tests or Fisher's exact tests were used to assess the difference between the two *** multivariate logistic regression analysis showed that lesion diameter(odds ratio[Or]=1.072,P=0.005),vascularization on color Doppler US(Or=4.066,P=0.001),and hyperenhancement during the early phase(Or=6.465,P=0.047)were significant independent risk factors for malignancy;however,when compared with neoplastic lesions,pain(Or=0.136,Prization on color Doppler US(Or=1.680,P=0.042),and nonenhancement during the late phase(Or=3.461,P=0.031)were strongly associated with nonneoplastic *** features are useful for differentiating testicular lesions with negative tumoral markers and improving the preoperative diagnosis,which may avoid inappropriate radical orchiectomy.

关键词： diagnosis histology testicular diseases ultrasound

Efficacy of image-enhanced endoscopy for color.ctal adenoma detection:A multicenter,randomized trial

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World Journal of Gastrointestinal Oncology 2023年第5期15卷 878-891页

作者： Zhi-Peng Qi En-Pan Xu dong-Li He Yan Wang Bai-Sheng Chen Xue-Si dong Qiang Shi Shi-Lun Cai Qi Guo Ni Li Xing Li Hai-Yan Huang Bing Li Di Sun Jian-Guang Xu Zhang-Han Chen Ayimukedisi Yalikong Jin-Yi Liu Zhen-Tao Lv Jian-Min Xu Ping-Hong Zhou Yun-Shi Zhong Endoscopy center Zhongshan Hospital of Fudan UniversityShanghai 200030China Endoscopy center Shanghai Xuhui Central HospitalShanghai 200030China Endoscopy center Traditional Chinese Medical HospitalRongcheng 264300Shandong ProvinceChina Department of Endoscopy center Xiamen Branch of Affiliated Zhongshan Hospital of Fudan UniversityXiamen 361000Fujian ProvinceChina Office of cancer Screening National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100000China Department of Gastroenterology Pingxiang People’s HospitalPingxiang 337000Jiangxi ProvinceChina Department of Clinical Medicine Xiaogang HospitalNingbo 315000Zhejiang ProvinceChina Endoscopy center Quzhou People’s HospitalQuzhou 324000Zhejiang ProvinceChina Department of General Surgery Zhongshan Hospital of Fudan UniversityShanghai 200030China

BACKGrOUND Improved adenoma detection at colonoscopy has decreased the risk of developing color.ctal ***,whether image-enhanced endoscopy(IEE)further improves the adenoma detection rate(adr)is *** To compare IEE with white-light imaging(WLI)endoscopy for the detection and identification of color.ctal *** This was a multicenter,randomized,controlled *** were enrolled between September 2019 to April 2021 from 4 hospital in *** were randomly assigned to an IEE group with WLI on entry and IEE on withdrawal(n=2113)or a WLI group with WLI on both entry and withdrawal(n=2098).The primary outcome was the *** secondary endpoints were the polyp detection rate(PDr),adenomas per colonoscopy,adenomas per positive colonoscopy,and factors related to adenoma *** A total of 4211 patients(966 adenomas)were included in the analysis(mean age,56.7 years,47.1%male).There were 2113 patients(508 adenomas)in the IEE group and 2098 patients(458 adenomas)in the WLI *** adr in two group were not significantly different[24.0%vs 21.8%,1.10,95%confidence interval(CI):0.99-1.23,P=0.09].The PDr was higher with IEE group(41.7%)than with WLI group(36.1%,1.16,95%CI:1.07-1.25,P=0.01).Differences in mean withdrawal time(7.90±3.42 min vs 7.85±3.47 min,P=0.30)and adenomas per colonoscopy(0.33±0.68 vs 0.28±0.62,P=0.06)were not *** analysis found that with narrowband imaging(NBI),between-group differences in the adr,were not significant(23.7%vs 21.8%,1.09,95%CI:0.97-1.22,P=0.15),but were greater with linked color imaging(30.9%vs 21.8%,1.42,95%CI:1.04-1.93,P=0.04).the second-generation NBI(2G-NBI)had an advantage of adr than both WLI and the first-generation NBI(27.0%vs 21.8%,P=0.01;27.0%vs 21.2.0%,P=0.01).CONCLUSION This prospective study confirmed that,among Chinese,IEE didn’t increase the adr compared with WLI,but 2G-NBI increase the adr.

关键词： Endoscopy Image-enhanced endoscopy adenoma detection rate White-light imaging Narrowband imaging

Image enhancement of color fundus photographs for age-related macular degeneration:the shanghai Changfeng Study

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International Journal of Ophthalmology(English edition) 2022年第2期15卷 268-275页

作者： Jing-Jing Shen rui Wang Li-Long Wang Chuan-Feng Lyu Shuo Liu Guo-Tong Xie Hai-Luan Zeng Ling-Yan Chen Min-Qian Shen Xin Gao Huan-dong Lin Yuan-Zhi Yuan Department of Ophthalmology Zhongshan HospitalFudan UniversityShanghai 200032China center for Evidence-based Medicine Fudan UniversityShanghai 200032China Pingan Technology(Shenzhen)Co. Ltd.Shenzhen 518029Guangdong ProvinceChina Department of Endocrinology and Metabolism Zhongshan HospitalFudan UniversityShanghai 200032China fudan Institute for Metabolic Diseases Shanghai 200032China

AIM:To develop and evaluate a new fundus image optimization software based on red,green,blue channels(rGB) for the evaluation of age-related macular degeneration(AMD) in the Chinese ***:Fundus images that were diagnosed as AMD from the shanghai Changfeng Study database were analyzed to develop a standardized optimization *** brightness,contrast,and color balance were *** between central lesion area and normal retinal area under different image brightness,contrast,and color balance were *** optimal optimization parameters were determined based on the visual system to avoid image distortion.A paired-sample diagnostic test was used to evaluate the enhancement *** optical coherence tomography(OCT) was used as the gold *** performances were compared between original images and optimized images using Mc Nemar’s ***:A fundus image optimization procedure was developed using 86 fundus images of 74 subjects diagnosed with *** observing gray-scale images,choroid can be best displayed in red channel and retina in green channel was *** was limited information in blue *** 104 participants were included in the paired sample diagnostic test to assess the performance of the optimization *** the image enhancement,sensitivity increased from 74% to 88%(P=0.008),specificity decreased slightly from 88% to 84%(P=0.500),and Youden index increased by ***:The standardized image optimization software increases diagnostic sensitivity and may help ophthalmologists in AMD diagnosis and screening.

关键词： age-related macular degeneration image enhancement image optimization retina

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中国先秦时期热处理滑石器初探

东南文化 2021年第1期 88-96页

作者：王荣董俊卿复旦大学文物与博物馆学系上海200433 中国科学院上海光学精密机械研究所科技考古中心上海201800

热处理用于改善材料性能以及获取所需色泽,彰显了古人的智慧与技术。除石器工具的热处理之外,象征性器物的热处理也是旧石器时代末期以来的一项重要人类行为。滑石因硬度较软,很早被中国先民用作装饰品和礼仪器,但很少用作珠饰。青铜时... 详细信息

热处理用于改善材料性能以及获取所需色泽,彰显了古人的智慧与技术。除石器工具的热处理之外,象征性器物的热处理也是旧石器时代末期以来的一项重要人类行为。滑石因硬度较软,很早被中国先民用作装饰品和礼仪器,但很少用作珠饰。青铜时代早期至西周时期,滑石珠饰大量出现,部分经过了热处理。与近东和南亚地区相比,热处理滑石珠饰在器型、功能方面存在相同之处,但中国的使用年代偏晚,制作工艺既存在相同之处,如有块体成形后加热的热处理滑石;也存在不同之处,如有滑石质黏土成形后烧制的"白陶"型滑石,表明中国热处理滑石珠饰来源的多样性和复杂性。

关键词：先秦时期滑石热处理珠饰近东南亚

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基于机器视觉的电动汽车充电自动定位方法

吉林大学学报（工学版） 2023年第12期53卷 3465-3471页

作者：葛动元向文江李健刘恩辰姚锡凡广西科技大学机械与汽车工程学院广西柳州545006 邵阳学院机械与能源工程学院湖南邵阳422004 复旦大学工程与应用技术研究院上海200433 华南理工大学机械与汽车工程学院广东510640

针对当前电动汽车充电自动定位方法易发生位置偏移、定位精度不准确等问题,提出了基于机器视觉的电动汽车充电自动定位方法。通过无线传感网络中的机器视觉系统获取电动汽车行驶状态,提取环境图像及数据信息,利用颜色模型中Hue分量、Ca... 详细信息

针对当前电动汽车充电自动定位方法易发生位置偏移、定位精度不准确等问题,提出了基于机器视觉的电动汽车充电自动定位方法。通过无线传感网络中的机器视觉系统获取电动汽车行驶状态,提取环境图像及数据信息,利用颜色模型中Hue分量、Canny算子对电动汽车充电孔及背景展开去噪,利用边缘检测算法获取线圈圆心,并计算充电线圈的等效边长,结合机器视觉中非线性最小二乘法完成电动汽车的自动定位。实验结果表明:在相对位移分别为3、5、7 mm时,本文方法接收线圈的定位精度与多次定位精度平均值相同,分别为8.24、8.99和8.12,本文方法的定位精度高;多次定位精度平均值与单次定位精度相同,定位效果好。

关键词：电动汽车充电自动定位无线传感网络颜色模型边缘检测最小二乘法

基于rCA阵列三维超快超声血流成像方法仿真研究

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物理学报 2023年第7期72卷 246-255页

作者：付亚鹏孙乾东李博艺他得安许凯亮复旦大学信息科学与工程学院生物医学工程中心上海200438 复旦大学集成芯片与系统全国重点实验室上海201203 复旦大学工程与应用技术研究院上海200433

三维超快成像是超声技术发展的重要方向.基于二维全采样阵列的传统三维成像方法需要较多成像阵元和采样通道,其紧密的阵元排列设计也客观上限制了阵列孔径大小和成像分辨率.行列寻址(row-column addressing,rCA)探头以行列检索的方式将... 详细信息

三维超快成像是超声技术发展的重要方向.基于二维全采样阵列的传统三维成像方法需要较多成像阵元和采样通道,其紧密的阵元排列设计也客观上限制了阵列孔径大小和成像分辨率.行列寻址(row-column addressing,rCA)探头以行列检索的方式将通道数自N×N减少为N+N,从而极大地降低了阵列的硬件实现成本.本文仿真了中心频率为6MHz的128行+128列的rCA阵列,结合多角度平面波正交复合成像方法,通过延时叠加(delay and sum,DAS)波束合成、基于特征值分解(singular value decomposition,SVD)的杂波滤除和自相关多普勒速度求解算法,实现了血流仿体的多普勒成像,并分析了不同复合角度序列对成像效果的影响.定量分析表明,当角度数从5个增至33个时,-6 dB分辨率从0.986 mm提升至0.493 mm;当复合角度为17个时,功率多普勒图像的SNr可达30 dB,彩色多普勒沿直径方向的速度分布和真实值的平均误差约为26.0%.以上结果表明,基于rCA阵列的三维成像技术能够获得三维B-mode、功率多普勒和彩色多普勒图像,增大复合平面波角度数和角度范围可显著提高成像质量.本研究对于三维超快超声多普勒成像技术发展具有借鉴意义,相关方法有应用于血流血管成像,并进一步实现基于神经-血管耦合的组织功能监测与成像的潜力和前景.

关键词：超快超声三维成像正交平面波复合 rCA 阵列超声多普勒

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体表损伤与瘢痕的三维测量方法应用评估

法医学杂志 2020年第2期36卷 204-209,215页

作者：王金明米静雅胡文虎李正东邹冬华陈忆九复旦大学基础医学院法医学系上海200032 司法鉴定科学研究院上海市法医学重点实验室司法部司法鉴定重点实验室上海市司法鉴定专业技术服务平台上海200063 南方医科大学法医学院广东广州510515

目的检验结构光三维扫描法和单相机摄影测量法这两种三维测量方法在法医学体表损伤与瘢痕测量中的准确性和可靠性。方法对比分析直尺法、结构光三维扫描法和单相机摄影测量法对86处尸体损伤的测量结果;对比分析结构光三维扫描法、单相... 详细信息

目的检验结构光三维扫描法和单相机摄影测量法这两种三维测量方法在法医学体表损伤与瘢痕测量中的准确性和可靠性。方法对比分析直尺法、结构光三维扫描法和单相机摄影测量法对86处尸体损伤的测量结果;对比分析结构光三维扫描法、单相机摄影测量法、Photoshop套索像素法、PDF阅读软件法对13处活体模拟块状瘢痕面积的测量结果,并记录所耗时间;以贴纸的已知规格信息作为标准值,比较直尺法、结构光三维扫描法和单相机摄影测量法的测量准确度,计算均方根误差(root mean square error,rMSE);对不同操作者和同一操作者前后3次测量结果的可重复性进行组内相关系数(intraclass correla⁃tion coefficient,ICC)一致性评价。结果两种三维测量方法与直尺法在尸体损伤上测得的结果差异无统计学意义;结构光三维扫描法、单相机摄影测量法、PDF阅读软件法的测量结果和Photoshop套索像素法相比差异无统计学意义,单相机摄影测量法后处理耗时长于其他方法;直尺法测量长距离组(10~40cm)时结果小于标准值,rMSE值结果为结构光三维扫描法<单相机摄影测量法<直尺法;组内和组间的ICC值均大于0.99。结论结构光三维扫描法和单相机摄影测量法均可应用于法医学体表损伤的记录和测量,前者在测量精度及稳定性上表现更优,后者的数据色彩还原度更好,但后处理耗时较长。

关键词：法医学体表面积瘢痕摄影测量法结构光学扫描单相机摄影测量

多粘菌素B导致皮肤色素沉着药品不良反应的文献分析

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药学服务与研究 2021年第6期21卷 441-445页

作者：董悦王琛瑀丁楠海军军医大学长海医院药学部上海200433 复旦大学附属华山医院药剂科上海200040 上海交通大学附属胸科医院药剂科上海200030

目的:分析多粘菌素B致皮肤色素沉着药品不良反应(adrs)的临床特点及可能的发生机制。方法:系统检索PubMed、EmBase、Cochrane Library、中国期刊全文数据库(中国知网,CNKI)、万方数据-数字化期刊群中关于多粘菌素B致皮肤色素沉着adrs的... 详细信息

目的:分析多粘菌素B致皮肤色素沉着药品不良反应(adrs)的临床特点及可能的发生机制。方法:系统检索PubMed、EmBase、Cochrane Library、中国期刊全文数据库(中国知网,CNKI)、万方数据-数字化期刊群中关于多粘菌素B致皮肤色素沉着adrs的个案报道,结合作者在工作中观察到的病例,进行汇总分析。结果:检索到14篇个案报道(涉及18例患者),加上作者在工作中观察到的1例病例,共19例患者,其中男性12例(63.2%),女性4例(21.1%),性别未知3例(15.8%)。老年患者(≥65岁)占总例数的26.3%。多粘菌素B相关皮肤色素沉着发生在用药后3~29 d,其中14例(73.7%)患者皮肤色素沉着发生在用药后14 d;报道的转归患者有9例,其中4例在停药后45 d至3个月后恢复至原本肤色。多粘菌素B致皮肤色素沉着的机制可能涉及组胺释放、朗格汉斯细胞增殖、氧化应激反应及苯丙氨酸增加黑色素的合成。结论:多粘菌素B导致的皮肤色素沉着较为常见,症状多发生于用药早期,多累及面部和颈部。该adrs可逆,停药后数月可恢复至原本肤色,其发生机制尚不明确,有待于进一步研究。

关键词：多粘菌素B 皮肤色素沉着药物副反应报告系统文献分析