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Flexible 2 × 2 multiple access visible light communication system based on an integrated parallel GaN/InGaN micro-photodetector array module

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Photonics Research 2024年第4期12卷 793-803页

作者： ZENGYI XU XIANHAO lin ZHITENG LUO qianying lin JIANLI ZHANG GUANGXU WANG XIAOLAN WANG FENGYI JIANG ZIWEI LI JIANYANG SHI JUNWEN ZHANG CHAO SHEN NAN CHI Key Laboratory for Information Science of Electromagnetic Waves(MoE) Department of Communication Science and EngineeringFudan UniversityShanghai 200433China National Institute of LED on Silicon Substrate Nanchang UniversityNanchang 330096China

In recent studies, visible light communication(VLC) has been predicted to be a prospective technique in the future 6G communication systems. To suit the trend of exponentially growing connectivity, researchers have intensively studied techniques that enable multiple access(MA) in VLC systems, such as the MIMO system based on LED devices to support potential applications in the Internet of Things(IoT) or edge computing in the nextgeneration access network. However, their transmission rate is limited due to the intrinsic bandwidth of ***, the majority of visible light laser communication (VLLC) research with beyond 10 Gb/s data rates concentrates on point-to-point links, or using discrete photodetector(PD) devices instead of an integrated array PD. In this paper, we demonstrated an integrated PD array device fabricated with a Si-substrated GaN/InGaN multiple-quantum-well(MQW) structure, which has a 4 × 4 array of 50 μm × 50 μm micro-PD units with a common cathode and anode. This single-integrated array successfully provides access for two different transmitters simultaneously in the experiment, implementing a 2 × 2 MIMO-VLLC link at 405 nm. The highest data rate achieved is 13.2 Gb/s, and the corresponding net data rate(NDR) achieved is 12.27 Gb/s after deducing the FEC overhead, using 2.2 GHz bandwidth and superposed PAM signals. Furthermore, we assess the Huffman-coded coding scheme, which brings a fine-grain adjustment in access capacity and enhances the overall data throughput when the user signal power varies drastically due to distance, weather, or other challenges in the channel condition. As far as we know, this is the first demonstration of multiple visible light laser source access based on a single integrated GaN/InGaN receiver module.

关键词： communication visible light

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Highly selective photocatalytic reduction of CO_(2) to CH_(4) on electron-rich Fe species cocatalyst under visible light irradiation

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Carbon Energy 2024年第1期6卷 255-266页

作者： qianying lin Jiwu Zhao Pu Zhang Shuo Wang Ying Wang Zizhong Zhang Na Wen Zhengxin Ding Rusheng Yuan Xuxu Wang Jinlin Long State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhouChina

Efficient photocatalytic reduction of CO_(2) to high-calorific-value CH4,an ideal target product,is a blueprint for C_(1)industry relevance and carbon neutrality,but it also faces great ***,we demonstrate unprecedented hybrid SiC photocatalysts modified by Fe-based cocatalyst,which are prepared via a facile impregnation-reduction method,featuring an optimized local electronic *** exhibits a superior photocatalytic carbon-based products yield of 30.0μmol g^(−1) h^(−1) and achieves a record CH_(4) selectivity of up to 94.3%,which highlights the effectiveness of electron-rich Fe cocatalyst for boosting photocatalytic performance and ***,the synergistic effects of directional migration of photogenerated electrons and strongπ-back bonding on low-valence Fe effectively strengthen the adsorption and activation of reactants and intermediates in the CO_(2)→CH_(4) *** study inspires an effective strategy for enhancing the multielectron reduction capacity of semiconductor photocatalysts with low-cost Fe instead of noble metals as cocatalysts.

关键词： artificial synthesis of CH_(4) electronic structure optimization Fe species cocatalyst photocatalytic CO_(2) reduction SiC

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Dual inhibition of glycolysis and oxidative phosphorylation by aptamer-based artificial enzyme for synergistic cancer therapy

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Nano Research 2022年第7期15卷 6278-6287页

作者： Xiao Fang Meng Yuan Junduan Dai qianying lin Yuhong lin Wenli Wang Yifan Jiang Haihui Wang Fang Zhao Junye Wu Shumeng Bai Chunhua Lu Huanghao Yang MOE Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food SafetyState Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou 350108China College of Biological Science and Engineering Fuzhou UniversityFuzhou 350108China

Dual inhibition of glycolysis and oxidative phosphorylation(OXPHOS)can break the metabolic plasticity of cancer cells to inhibit most energy supply and lead to effective cancer ***,the pharmacokinetic difference among drugs hinders these two inhibitions to realize a uniform temporal and spatial ***,we report an aptamer-based artificial enzyme for simultaneous dual inhibition of glycolysis and OXPHOS,which is constructed by arginine aptamer modified carbon-dots-doped graphitic carbon nitride(AptCCN).AptCCN can circularly capture intracellular arginine attribute to the specific binding ability of arginine aptamers to arginine,and further catalyze the oxidation of enriched arginine to nitric oxide(NO)under red light *** vitro and in vivo experiments showed that arginine depletion and NO stress could inhibit glycolysis and OXPHOS,leading to energy blockage and apoptosis of cancer *** presented aptamer-based artificial enzyme strategy provides a new path for cell pathway regulation and synergistic cancer therapy.

关键词： aptamers artificial enzymes photochemistry energy blockage cancer therapy

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Study on the Mechanism of Glutamine Promoting the Synthesis of Colonic Mucin and Maintaining the Stability of Intestinal Microbiota in Septic Mice

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Food Science and Human Wellness 2024年

作者： Yanyan Pan Gang Yang Dan Wu Yan Wei Shijun Fan lin Xia Qian Chen qianying Huang Yongling Lu Xi Peng Clinical Medical Research Center Southwest Hospital Third Military Medical University (Army Medical University) Burn Department Ningbo No.2 Hospital nstitute of Burn Research State Key Laboratory of Trauma and Chemical Poisoning Southwest Hospital Third Military Medical University (Army Medical University)

Colonic mucus and gut microbiota closely linked through mutual regulatory effect. While their alterations during sepsis and whether glutamine can maintain the colonic mucus barrier and gut microbiota stability are unclear. Cecal ligation and puncture-induced sepsis in mice was utilized to observe changes in colonic mucus， gut microbiota， and their interaction with glutamine intervention. Our findings indicated that glutamine mitigated sepsis-induced intestinal damage and restores colonic mucus barrier function by augmenting mucin synthesis. Further analysis revealed that goblet cells were under oxidative stress after sepsis， resulting in anterior gradient-2 (AGR2)， the key mucin-modifying enzyme， being dissynthesized， and inhibiting mucin2 (MUC2) maturation. glutamine could ameliorates this situation by promoting the key enzyme glucose-6-phosphate dehydrogenase (G6PD) glycosylation in the pentose phosphate pathway， increasing the reduced nicotinamide adenine dinucleotide phosphate (NADPH) synthesis， reducing endoplasmic reticulum stress， and accelerating AGR2 synthesis and MUC2 maturation. Additionally， glutamine aided in maintaining gut microbiota stability during sepsis， up-regulating mucin-associated bacteria such as Akkermansia and Alistipes. These bacteria， intimately linked to mucin synthesis and degradation， may impact intestinal mucus stability. In conclusion， glutamine can maintain goblet cell redox balance， promotes AGR2 synthesis and MUC2 maturation， shields the mucus barrier， and potentially maintains gut microbiota stability by regulating the interaction between bacteria and mucus， thus alleviating sepsis-induced intestinal damage.

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The Impact of Medical Resources and Oral Antiviral Drugs on SARS-CoV-2 Mortality—Hong Kong SAR,China,2022

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China CDC weekly 2024年第21期6卷 469-477,I0001-I0005页

作者： Zhiqi Zeng Jingyi Liang Zhijie lin Wenda Guan Wei He qianying Li Lixi Liang Weiqi Pan Zige Liu Guibin Lu Xiaoyan Deng Eric HY Lau Chitin Hon Zifeng Yang Guangzhou key laboratory for clinical rapid diagnosis and early warning of infectious diseases KingMed School of Laboratory MedicineGuangzhou Medical UniversityGuangzhou CityGuangdong ProvinceChina Macao Institute of Systems Engineering Macao University of Science and TechnologyMacao SARChina Respiratory Disease AI Laboratory on Epidemic Intelligence and Medical Big Data Instrument Applications Faculty of Innovative EngineeringMacao University of Science and TechnologyMacao SARChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou CityGuangdong ProvinceChina School of Public Health The University of Hong KongHong Kong SARChina Laboratory of Data Discovery for Health Hong Kong SARChina Guangzhou Laboratory Guangzhou CityGuangdong ProvinceChina

Introduction:The Omicron variant of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)demonstrates increased transmissibility compared to earlier strains,contributing to a significant number of fatalities in Hong Kong Special Administrative Region(HKSAR),*** medical resources and medications are essential in mitigating these *** study evaluates the effects of supplementary resources from the Chinese mainland during the fifth wave of the pandemic in ***:Vector autoregression(VAR)was employed to analyze data from the Oxford coronavirus disease 2019(COVID-19)Government Response Tracker to assess the effectiveness of control measures during five waves of the pandemic in ***,a transmission dynamics model was created to investigate the influence of supplementary medical resources from the Chinese mainland and oral medications on ***:In the initial four waves,workplace closures,restrictions on public events,international travel bans,and shielding the elderly significantly influenced pandemic ***,during the fifth wave,these measures showed no notable *** comparing a situation without extra medical resources or COVID-19 oral medication,there was a 17.7%decrease in COVID-19 fatalities with mainland medical resources and an additional 10.2%reduction with oral ***,they contributed to a 26.6%decline in ***:With the rapid spread of the virus,regional reallocation of medical resources may reduce mortality even when the local healthcare system is overstretched.

关键词： mainland Impact travel

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铁基非晶合金带材压磁现象测试与表征方法改进及其压磁特性（英文）

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稀有金属材料与工程 2018年第11期47卷 3264-3271页

作者：陈杰朱正吼白茹茹林前英南昌大学江西南昌330031

在无接触式电感方法基础上自主开发改进了一套新的测试系统,改进的测量装置可以表征铁基非晶合金带材的压磁特性。研究表明,在σ≤0.1 MPa下,Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶带材具有良好的圧磁特性,在测试电压为0.3 V、f=1 kHz时,Fe... 详细信息

在无接触式电感方法基础上自主开发改进了一套新的测试系统,改进的测量装置可以表征铁基非晶合金带材的压磁特性。研究表明,在σ≤0.1 MPa下,Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶带材具有良好的圧磁特性,在测试电压为0.3 V、f=1 kHz时,Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶带材均在多次试验中表现出很好的稳定性和重复性。带材对微小应力极为敏感,在对带材进行初步施压时,样品的电感值出现迅速上升趋势,通过放大实验,精确测到带材的应力敏感区间在0～1.5kPa之间;不同厚度和宽度的Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶带材对其压磁性能具有较大影响,测量的电感初值及其相应的SI-Max值总体上随着相应尺寸的增大而增大;带材宽度一定时,33～36μm厚带材的压磁性能最优,相应的SI-Max为19.8%;带材厚度一定时,20 mm宽的带材具有更加优异的压磁性能,其SI-Max可达22.02%。

关键词：非晶合金压磁效应:力敏特性:传感元件

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Fe73.5Cu1Nb3Si13.5B9非晶合金薄膜压磁效应的特征及负压磁效应

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稀有金属材料与工程 2020年第4期49卷 1204-1210页

作者：陈杰朱正吼林前英白茹茹赵辉南昌大学材料科学与工程学院江西南昌330031 南昌大学空间与技术研究院江西南昌330031

以Fe73.5Cu1Nb3Si13.5B9非晶合金薄膜作为研究对象,研究了其压磁效应的特征及其负压磁效应现象。结果表明,淬态下的Fe73.5Cu1Nb3Si13.5B9非晶合金薄膜在0~0.66 kPa压力带具有显著的正压磁效应,随着压应力增大,薄膜电感值下降。当压应力... 详细信息

以Fe73.5Cu1Nb3Si13.5B9非晶合金薄膜作为研究对象,研究了其压磁效应的特征及其负压磁效应现象。结果表明,淬态下的Fe73.5Cu1Nb3Si13.5B9非晶合金薄膜在0~0.66 kPa压力带具有显著的正压磁效应,随着压应力增大,薄膜电感值下降。当压应力σ=0.66 kPa时,压磁效应值SI达到5.5%;环境温度对压磁效应灵敏度有影响,在20~30℃范围内,压磁效应和灵敏度稳定性最好,随着环境温度升高,薄膜灵敏度和压磁效应值均降低;薄膜经过退火处理后,薄膜内应力状态会发生变化,当退火温度≥350℃时,薄膜的压磁效应类型由"正压磁效应"转变为"负压磁效应",且随着薄膜中内应力降低,|SI|值下降,且薄膜的压磁效应受环境温度影响减小。当退火温度为555℃,σ=0.44 kPa时,|SI|值仅为0.59%;当退火温度达到薄膜的晶化温度时,薄膜的压磁效应受环境温度影响最小。

关键词：非晶合金薄膜压磁效应内应力

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行政腐败对居民收入的影响——基于中国居民微观调查的证据

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南方经济 2015年第1期44卷 18-36页

作者：张璇李春涛林倩莹中南财经政法大学应用经济学博士后流动站中南财经政法大学统计与数学学院中南财经政法大学金融学院北京数博思达信息科技有限公司

本文利用CGSS(2008)家庭调查数据、世界银行(2005)对中国120个地级市的企业调查数据和国家统计局工业企业调查数据,研究了行政腐败对居民个体收入的影响。根据世行数据,我们构造了两个腐败指标,其一是当地企业向银行贷款时需要向银行信... 详细信息

本文利用CGSS(2008)家庭调查数据、世界银行(2005)对中国120个地级市的企业调查数据和国家统计局工业企业调查数据,研究了行政腐败对居民个体收入的影响。根据世行数据,我们构造了两个腐败指标,其一是当地企业向银行贷款时需要向银行信贷员行贿的平均比例;其二是企业高层每年用于陪伴政府官员的平均时间。根据统计局的工业调查数据,我们用区、县规模以上企业的总资产和总销售量度量当地经济发展水平。通过对全样本和城市、农村分地区的线性回归、分位数回归和引入交互项分析,我们发现:(1)不论是在城镇还是农村、不论是收入高的群体还是收入低的群体,行政腐败从总体上都减少了居民的收入;(2)受教育水平是影响居民收入的重要因素,腐败则显著地通过影响教育回报率而影响居民收入。具体说来,在城镇,腐败降低了教育的回报;然而在农村,腐败的影响正好相反。

关键词：居民收入行政腐败教育回报率

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丹皮酚对LPS诱导的奶牛乳腺上皮细胞炎性损伤的缓解作用

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畜牧与兽医 2023年第4期55卷 50-55页

作者：杨明李可贾丽武英豪林倩颖袁丽宁李连敏马玉忠河北农业大学动物医学院河北保定071001

旨在探究丹皮酚对脂多糖(lipopolysaccharide,LPS)诱导的奶牛乳腺上皮细胞(bovine mammary epithelial cells,BMECs)炎性损伤的缓解作用。使用CCK-8法检测不同浓度丹皮酚对BMECs活力的影响,选用20、50和100 mg/L丹皮酚处理LPS诱导的BMECs炎性模型,并检测细胞凋亡、氧化应激因子、相关炎性因子及NF-κB关键通路蛋白表达的变化。结果显示:10~100 mg/L丹皮酚对BMECs增殖有不同程度的促进作用;不同剂量的丹皮酚可显著抑制细胞凋亡及IL-6、IL-1β、TNF-α的mRNA表达水平,提高超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性,降低丙二醛(MDA)含量,抑制IκBα和p65的磷酸化水平。以上结果表明,丹皮酚能够抑制LPS诱导的BMECs的炎性损伤,其作用机制可能与NF-κB信号通路被抑制有关。

关键词：丹皮酚奶牛乳腺上皮细胞 LPS 炎性损伤

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肺炎克雷伯菌所致奶牛肺炎的病原分析及治疗

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中国兽医学报 2022年第6期42卷 1178-1183页

作者：贾丽李可梁艳艳侯铭源田梦悦杨明林倩颖张婷马玉忠河北农业大学动物医学院河北保定071001

采集具有呼吸道症状2岁龄奶牛鼻拭子,分离病原菌,通过生化试验和16S rDNA序列分析进行鉴定,并进行致病性试验、药敏试验、多重耐药性分析与治疗试验。结果显示,经16S rDNA鉴定,在84份样品中分离到32株肺炎克雷伯菌,分离率38.1%(32/84)... 详细信息

采集具有呼吸道症状2岁龄奶牛鼻拭子,分离病原菌,通过生化试验和16S rDNA序列分析进行鉴定,并进行致病性试验、药敏试验、多重耐药性分析与治疗试验。结果显示,经16S rDNA鉴定,在84份样品中分离到32株肺炎克雷伯菌,分离率38.1%(32/84)。分离株具有较强的致病性,在致死小鼠的实质器官中均分离到肺炎克雷伯菌。32株分离株对恩诺沙星敏感率最高(96.875%),部分肺炎克雷伯菌对一些常用抗菌药物表现出多重耐药,对氨苄西林、多西环素、复方新诺明、头孢唑啉的耐药率较高,并且部分耐药性强的菌株表现出较近的亲缘关系。在治疗试验中,恩诺沙星和麻杏石甘散联合应用对肺炎克雷伯菌所致奶牛肺炎治疗效果最佳,这为肺炎克雷伯菌所致奶牛肺炎的治疗提供了参考。

关键词：肺炎克雷伯菌奶牛肺炎病原分析

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