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脱硫吸附剂与吸附脱硫技术

化学工业与工程技术 2007年第3期28卷 25-30页

作者：纪容昕南化集团研究院江苏南京210048

综述了国内外原料气和燃料油吸附脱硫技术在吸附脱硫材料和吸附脱硫工艺方面的研究与开发进展。介绍了分子筛类、金属氧化物类、活性炭类等脱硫吸附剂。分别评述了物理吸附、活化吸附、选择性吸附等燃料油吸附脱硫技术的机理和工艺。

关键词：脱硫吸附剂吸附脱硫技术进展

乙型与丙型肝炎病毒重叠感染的血清学检测结果分析

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旅行医学科学 2004年第1期10卷 11-12页

作者：季荣星于桂兰齐齐哈尔检验检疫局黑龙江161005 齐齐哈尔市传染病防治院黑龙江161000

目的调查近三年来齐齐哈尔地区乙型肝炎、丙型肝炎病例,进行血清学检测,对于防治乙型肝炎和丙型肝炎提供依据。方法对出入境人员中发现的乙型肝炎病例,以及齐齐哈尔传染病院住院的乙型肝炎、丙型肝炎、肝炎后肝硬化患者(共168例)进行统... 详细信息

目的调查近三年来齐齐哈尔地区乙型肝炎、丙型肝炎病例,进行血清学检测,对于防治乙型肝炎和丙型肝炎提供依据。方法对出入境人员中发现的乙型肝炎病例,以及齐齐哈尔传染病院住院的乙型肝炎、丙型肝炎、肝炎后肝硬化患者(共168例)进行统计分析。结果在HBsAg阳性组106例中,抗-HCV阳性48例,阳性率为45.28%,其中急性肝炎抗-HCV阳性率11.76%,慢性肝炎42.00%,肝炎后硬化64.10%;在HBsAg阴性组的62例中,抗-HCV阳性47例,阳性率为75.81%,其中急性肝炎阳性率为62.50%,慢性肝炎69.57%,肝炎后硬化83.87%。结论乙型肝炎和丙型肝炎二者有共同的传播途径,主要是经血液,也可通过日常生活接触传播或母婴垂直传播。两种双重感染十分普遍。

关键词：乙型肝炎丙型肝炎病毒重叠感染血清学检测 HBsAg 流行病

Steel surface defect detection based on lightweight YOLOv7

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Optoelectronics Letters 2025年

作者： Shi Tao Wu rongxin Zhu Wenxu Ma Qingliang School of Electrical Engineering and Automation， Tianjin University of Technology North China University of Science and Technology， College of Electrical Engineering Guangzhou Institute of Measurement and Testing Technology

Aiming at the problems of low detection efficiency and difficult positioning of traditional steel surface defect detection methods， a lightweight steel surface defect detection model based on YOLOv7 is proposed. First， a CSS Block module is proposed， which uses more lightweight operations to obtain redundant information in the feature map， reduces the amount of computation， and effectively improves the detection speed. Secondly， the improved SPPCSPC structure is adopted to ensure that the model can also pay attention to the defect location information while predicting the defect category information， obtain richer defect features. In addition， the convolution operation in the original model is simplified， which significantly reduces the size of the model and helps to improve the detection speed. Finally， using EIOU Loss to focus on high-quality Anchors， speed up convergence and improve positioning accuracy. Experiments were carried out on the NEU-DET steel surface defect dataset. Compared with the original YOLOv7 model， the number of parameters of this model was reduced by 40%， the FPS reached 112， and the average accuracy reached 79.1%.， the detection accuracy and speed have been improved， which can meet the needs of steel surface defect detection.

关键词：

Brain age estimation:premise,promise,and problems

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Neural Regeneration Research 2025年第8期20卷 2313-2314页

作者： Jarrad Perron ji Hyun Ko Graduate Program in Biomedical Engineering Price Faculty of EngineeringUniversity of ManitobaWinnipegMBCanada PrairieNeuro Research Centre Kleysen Institute for Advanced MedicineHealth Sciences CentreWinnipegMBCanada Department of Human Anatomy and Cell Science Rady Faculty of Health SciencesUniversity of ManitobaWinnipegMBCanada

Premise:The com bined effects of modern healthcare practices which prolong lifespan and declining birthrates have created unprecedented changes in age demographics worldwide that are especially pronounced in Japan,South Korea,Europe,and North *** old age is the most significant predictor of dementia,global healthcare systems must rise to the challenge of providing care for those with neurodegenerative disorders.

关键词： estimation providing birth

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卓越绩效——质量管理的全面提升

铁道技术监督 2010年第7期38卷 6-9页

作者：叶渭川吉荣新南京泰通科技有限公司江苏南京210037

介绍国内外质量管理的演变和国内企业应用最广泛的几种质量管理模式(工具),论述卓越绩效与质量管理模式的关系,以及卓越绩效对企业全面管理的有效性,提出加快实施卓越绩效管理的建议。

关键词：质量管理卓越绩效

Manufacture the conducting polymer with light

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Science China Chemistry 2025年第1期68卷 8-9页

作者： Yang Li Tianyu Li Yan ji Baoguang Liu College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology) Nanjing University of Posts & Telecommunications

Poly(3,4-ethylenedioxythiophene) (PEDOT), heralded as the “king” of conducting polymers, is esteemed in bioelectronics for its mixed electronic and ionic conductivity, mechanical properties compatible with biological tissues, tunable healing ability and stability in diverse environments [1]. Based on additive manufacturing of three-dimensional structures,PEDOT realizes the implementation in the efficient production of flexible bioelectronics, the construction of intricate electrode-neural implantations, and the development of smart brain-computer-interfaces [2].

关键词：

Acceptor concentration dependent Fo?rster resonance energy transfer in nanocrystal-molecule complexes revealed by spectral analysis

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Optoelectronics Letters 2025年

作者： rongxin ZHANG Zixiang ZHOU Lei WANG Xin ZHANG Ying LIANG Guijie LIANG Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices， Hubei University of Arts and Science

A nanocrystal-molecule complex composed of CdSe donor and Rhodamine B (RhB) acceptor is prepared to investigate the effect of accepter-donor ratio on the Fo?rster resonance energy transfer (FRET) process. To highlight the FRET process， the energy level alignment between CdSe and RhB is purposefully designed and CdSe nanocrystal is coated with a wide band-gap ZnS shell. The carrier dynamics is observed via combined spectral analysis. The results reveal clear FRET process between the CdSe donor and RhB acceptor. The FRET is enhanced by increasing RhB/CdSe ratio and a gradual saturation will be present at high RhB concentration.

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Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility

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Nano-Micro Letters 2025年第2期17卷 401-416页

作者： Chen Li Leilei Liang Baoshan Zhang Yi Yang Guangbin ji School of Electronic Science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration ***,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption *** top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass ***,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric *** theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ***,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of ***,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关键词： Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction

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GSM-R光纤直放站中射频功放模块的设计

高技术通讯 2014年第6期24卷 616-622页

作者：徐建姚子龙曾贤文王蓉王志功陈建平吉荣新东南大学射频与光电集成电路研究所南京210096 南京泰通科技有限公司南京210000

对满足铁路GSM-R标准的光纤直放站中的射频功放模块进行了设计、制造和测试。设计采用功率回退与预失真及双平衡输出级相结合的方法以实现射频功放模块的高线性度指标。采用自动增益控制、自动电平控制技术保证功放的增益稳定以及输出... 详细信息

对满足铁路GSM-R标准的光纤直放站中的射频功放模块进行了设计、制造和测试。设计采用功率回退与预失真及双平衡输出级相结合的方法以实现射频功放模块的高线性度指标。采用自动增益控制、自动电平控制技术保证功放的增益稳定以及输出功率稳定。设计中增加了驻波比检测、控制电路等数控模块以保证功放模块的高可靠性。测试结果表明,该模块输出功率为16W,三阶交调失真(IMD3)达到-63dBc,表现出了优异的线性度,完全达到铁路GSM-R高铁直放站的设计要求。

关键词： GSM-R 光纤直放站射频功放模块自动增益控制(AGC) 自动电平控制 (ALC) 预失真功率回退