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The Mn/Yb/Er triple-doped CeO_(2) nanozyme with enhanced oxidase-like activity for highly sensitive ratiometric detection of nitrite

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Chinese Chemical Letters 2024年第6期35卷 491-495页

作者： Simin Wei Yaqing Yang Junjie li Jialin Wang Jinlu Tang Ningning Wang zhaohui li College of Chemistry Institute of Analytical Chemistry for Life ScienceHenan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical ApplicationsZhengzhou UniversityZhengzhou 450001China School of Basic Medical Sciences Zhengzhou UniversityZhengzhou 450001China

Long-term excessive intake of nitrite(NO_(2)^(-))poses a great threat to human health,needing a simple and fast method to detect NO_(2)-in ***,via a simple and feasible strategy,Mn/Yb/Er triple-doped CeO_(2) nanozyme(Mn/Yb/Er/CeO_(2))was synthesized for highly sensitive ratiometric detection of *** doping Mn,Yb,Er into CeO_(2) lattice structure,Mn/Yb/Er/CeO_(2) nanozyme showed enhanced oxidase-like activity,obtaining a higher density of oxygen vacancy and a higher ratio of Ce^(3+)to Ce~(4+)than that of CeO_(2).The 3,3,5,5-tetramethylbenzidine(TMB)can be effectively oxidized by Mn/Yb/Er/CeO_(2) to produce the oxidized TMB(ox TMB),showing a significant absorption signal at 652 ***,nitrite can react with ox TMB to produce yellow diazotized ox TMB,which is accompanied by an elevated absorption signal at 445 nm and a decreased absorption signal at 652 ***,based on the oxidase-mimetic activity of Mn/Yb/Er/CeO_(2) and the diazotization reaction between NO_(2)^(-)and ox TMB,a ratiometric colorimetric assay was established for NO_(2)^(-)detection in ***,by integrating Mn/Yb/Er/CeO_(2) with a smartphone,a colorimetric smartphone-sensing platform was successfully fabricated for visualization and quantitative detection of NO_(2)^(-).Notably,this two-detection mode showed excellent sensitivity,selectivity,reliability and practicability in monitoring the NO_(2)^(-)in real samples,impling its great potential for food safety.

关键词： Mn/Yb/Er/CeO_(2) nanozyme Oxidase-like activity Nitrite Ratiometric detection Two-detection mode

Four-dimensional direct detection receiver enabling Jones-space field recovery with phase and polarization diversity

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Photonics Research 2024年第3期12卷 399-410页

作者： QI WU YIXIAO ZHU XUEYANG li HEXUN JIANG CHEN CHENG MENGFAN FU YIKUN ZHANG QUNBI ZHUGE zhaohui li WEISHENG HU Peng Cheng Laboratory Shenzhen 518055China State Key Laboratory of Advanced Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Electronics and Information Technology and Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen UniversityGuangzhou 510006China

Data centers,the engines of the global Internet,rely on powerful high-speed optical *** optical fiber communication,classic direct detection captures only the intensity of the optical field,while the coherent detection counterpart utilizes both phase and polarization diversities at the expense of requiring a narrow-linewidth and high-stability local oscillator(LO).Herein,we propose and demonstrate a four-dimensional Jones-space optical field recovery(4-D JSFR)scheme without an *** polarization-diverse full-field receiver structure captures information encoded in the intensity and phase of both polarizations,which can be subsequently extracted *** our knowledge,our proposed receiver achieves the highest electrical spectral efficiency among existing direct detection systems and potentially provides similar electrical spectral efficiency as standard intradyne coherent detection *** fully recovered optical field extends the transmission distance beyond the limitations imposed by fiber chromatic ***,the LO-free advantage makes 4-D JSFR suitable for photonic integration,offering a spectrally efficient and cost-effective solution for massively parallel data center *** results may contribute to the ongoing developments in the theory of optical field recovery and the potential design considerations for future high-speed optical transceivers.

关键词： polarization receiver phase

Ratiometric fluorescence probe for accurate detection of Concanavalin A by coupling fluorescent microsphere with boric acid functionalized carbon dots

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Chinese Chemical Letters 2024年第2期35卷 460-463页

作者： Mingyue Xie Juan Chen Yufei Wang Bojun liu Rong-Bin Song Hong-Min Meng zhaohui li College of Chemistry Institute of Analytical Chemistry for Life ScienceHenan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical ApplicationsZhengzhou UniversityZhengzhou 450001China Zhengzhou Key Laboratory of Forensic Science and Technology Railway Police CollegeZhengzhou 450053China School of Ecology and Environment Zhengzhou UniversityZhengzhou 450001China

Accurate and sensitive strategies for Concanavalin A(Con A)sensing are conducive to the better cognition of various important biological and physiological ***,by designing dextran-functionalized fluorescent microspheres(DxFMs)and boric acid-modified carbon dots(BCDs)as recognition unit and built-in signal reference respectively,a ratiometric fluorescent detection platform was proposed for Con A detection with high *** this protocol,the BCDs/DxFMs precipitation was formed due to the covalent interactions between cis-diol of DxFMs and boronic acid groups of BCDs,thus only fluorescence of BCDs could be detected in the *** Con A was presented,it could bind to DxFMs through its carbohydrate recognition ability and suppress the subsequent assembly between DxFMs and BCDs,leading to the simultaneous capture of DxFMs and BCDs fluorescence in the *** the BCDs content was superfluous,their fluorescence intensities were basically constant in all *** on the unchanged BCDs fluorescence signal and target-dependent DxFMs fluorescence signal in supernatant,the ratiometric detection of Con A was *** optimized conditions,this ratiometric fluorescent platform displayed a linear detection range from 0.125μg/mL to 12.5μg/mL with a detection limit of 0.089μg/***,satisfied analytical outcomes for Con A detection in serum samples were obtained,manifesting huge application potential of this ratiometric fluorescent platform in clinical diagnosis.

关键词： Concanavalin A Fluorescent microspheres Carbon dots Ratiometric fluorescent assay Reliability

10 Gb/s classical secure key distribution based on temporal steganography and private chaotic phase scrambling

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Photonics Research 2024年第2期12卷 321-330页

作者： ZHENSEN GAO ZHITAO DENG liHONG ZHANG XUliN GAO YUEHUA AN ANBANG WANG SONGNIAN FU zhaohui li YUNCAI WANG YUWEN QIN School of Information Engineering Guangdong University of TechnologyGuangzhou 510006China Pengcheng Laboratory Shenzhen 518062China Key Laboratory of Photonic Technology for Integrated Communication and Sensing Ministry of EducationGuangzhou 510006China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China School of Electrical and Information Technology Sun Yat-sen UniversityGuangzhou 510006China

Secure distribution of high-speed digital encryption/decryption keys over a classical fiber channel is strongly pursued for realizing perfect secrecy communication ***,it is still challenging to achieve a secret key rate in the order of tens of gigabits per second to be comparable with the bit rate of commercial fiber-optic *** this paper,we propose and experimentally demonstrate a novel solution for high-speed secure key distribution based on temporal steganography and private chaotic phase scrambling in the classical physical *** encryption key is temporally concealed into the background noise in the time domain and randomly phase scrambled bit-by-bit by a private chaotic signal,which provides two layers of enhanced security to guarantee the privacy of key distribution while providing a high secret key *** experimentally achieved a record classical secret key rate of 10 Gb/s with a bit error rate lower than the hard-decision forward error correction(HD-FEC)over a 40 km standard single mode *** proposed solution holds great promise for achieving high-speed key distribution in the classical fiber channel by combining steganographic transmission and chaotic scrambling.

关键词： chaotic distribution phase

Novel de novo TRPV4 mutation identified in a Chinese family with metatropic dysplasia inhibits chondrogenic differentiation

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Genes & Diseases 2024年第3期11卷 83-86页

作者： Ping Wei Weizhe Shi Tianying Nong Caixia Xian Xia li zhaohui li Xin li Jianping Wu liyuan Shang Fulong Xu Yibo Xu Hongwen Xu Mingwei Zhu Guangzhou Institute of Pediatrics Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouGuangdong 510623China Department of Pediatric Orthopedics Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouGuangdong 510623China

Metatropicdysplasia(MD,MIM156530)is a rare congenital bone dysplasia primarily characterized by severe platyspondyly with long and wide vertebral bodies and dumbbell deformity of the tubular *** can be caused by heterozygous mutations in the gene encoding transient receptor potential vanilloid family member 4(TRPV4).We identifieda novel de novo mutation,c.2353T>C,in the TRPV4 gene,in a Chinese family with mild MD.

关键词： TRPV4 dysplasia congenital

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低成本亚毫米精度单光子测距技术

激光与光电子学进展 2024年第5期61卷 267-272页

作者：李舒毅詹淇李召辉吴光华东师范大学精密光谱科学与技术国家重点实验室上海200241

单光子探测技术具有高灵敏度、低时间抖动、低功耗等独特优势,在激光测距和成像中的应用越来越广泛。基于此,提出一种低成本的高精度单光子测距技术。利用窄脉冲电路驱动激光二极管产生脉宽为160 ps的窄脉冲激光,利用多像素光子计数器... 详细信息

单光子探测技术具有高灵敏度、低时间抖动、低功耗等独特优势,在激光测距和成像中的应用越来越广泛。基于此,提出一种低成本的高精度单光子测距技术。利用窄脉冲电路驱动激光二极管产生脉宽为160 ps的窄脉冲激光,利用多像素光子计数器研制时间抖动为417 ps的低时间抖动单光子探测器,降低系统的整体时间抖动,并搭建高精度单光子测距实验装置。测距实验结果表明,在2 m的测距量程内,单光子测距系统的距离测量精度可达370μm@RMS。实验装置采用同轴光路设计,结构简单,易于集成,为实现小型化低功耗高精度单光子测距系统提供了一种可行性的解决方案。

关键词：激光测距单光子探测器亚毫米光子计数

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Cu-MI/TPU纳米纤维膜的制备及其性能

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印染 2024年第4期50卷 49-52,82页

作者：李朝晖徐康景江苏工程职业技术学院江苏先进纺织工程技术中心江苏南通226007 南通大学江苏南通226019

以水为介质,Cu(NO_(3))_(2)·3H_(2)O和2-甲基咪唑(2-MI)为原料,室温下制备了铜基金属-有机框架材料(CuMI)。将Cu-MI加入热塑性聚氨酯(TPU)纺丝液中,通过静电纺丝的方法制得Cu-MI/TPU纳米纤维膜。采用FTIR、SEM、XRD等方法,对Cu-MI和Cu-... 详细信息

以水为介质,Cu(NO_(3))_(2)·3H_(2)O和2-甲基咪唑(2-MI)为原料,室温下制备了铜基金属-有机框架材料(CuMI)。将Cu-MI加入热塑性聚氨酯(TPU)纺丝液中,通过静电纺丝的方法制得Cu-MI/TPU纳米纤维膜。采用FTIR、SEM、XRD等方法,对Cu-MI和Cu-MI/TPU膜的化学组分、表面形貌和晶体结构进行表征。测试了Cu-MI对活性黑KN-B染料、活性红3BS和活性艳蓝KN-R的液相吸附性能,以及Cu-MI/TPU膜的抗菌性能和热稳定性能。结果表明:当混合液pH为7时,可形成八面体形态的Cu-MI,且其对活性黑KN-B、活性艳蓝KN-R和活性红3BS的吸附效果最好。加入Cu-MI可提高TPU膜对大肠埃希菌和金黄葡萄球菌的抑菌性和膜的热稳定性,而且随着Cu-MI质量分数的增加,Cu-MI/TPU膜的抑菌效果和热稳定性提高。

关键词：纳米纤维膜静电纺丝铜基金属-有机框架材料热塑性聚氨酯弹性体吸附染料

原发性肾小球疾病患者肠道菌群与炎症因子的相关性分析

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中国病原生物学杂志 2024年第5期19卷 550-554页

作者：李朝晖朱卫国刘兵济南市第四人民医院山东济南250031

目的探析原发性肾小球疾病患者肠道菌群水平、炎症因子水平及肠道菌群与炎症因子的相关性。方法选取2021-2023年,本院接诊的62例原发性肾小球疾病患者为本次研究对象,同时选取同期60例体检健康者为健康对照组。通过电子病历系统收集本... 详细信息

目的探析原发性肾小球疾病患者肠道菌群水平、炎症因子水平及肠道菌群与炎症因子的相关性。方法选取2021-2023年,本院接诊的62例原发性肾小球疾病患者为本次研究对象,同时选取同期60例体检健康者为健康对照组。通过电子病历系统收集本次研究对象所有临床资料,对比不同病理类型患者的临床特点。采集参与本次研究所有研究对象的粪便样本,采用光冈法进行细菌培养,计算每克粪便中乳酸杆菌、双歧杆菌、大肠埃希菌、拟杆菌、肠球菌菌落数。采集所有研究对象的静脉血,离心处理后,采用酶联免疫吸附法检测血清中肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-6(Interleukin-6,IL-6)、白细胞介素-17(Interleukin-17,IL-17)水平。采用Pearson相关性检验分析法分析肠道菌群与炎症因子的相关性。结果62例原发性肾小球疾病患者中,45.16%为膜性肾病,25.81%为IgA肾病,11.29%为微小病变性肾病,9.68%为系膜增生性肾小球肾炎,3.23%为局灶性节段性肾小球硬化,系膜毛细血管性肾小球肾炎、新月体性肾小球肾炎、毛细血管内增生性肾小球肾炎各占比1.61%。48.39%表现为肾病综合征,32.26%表现为肾炎综合征,14.52%表现为肾功能不全,4.84%表现为隐匿性肾炎。膜性肾病患者与IgA肾病两组患者的年龄、性别、尿酸水平差异无统计学意义(P>0.05),白蛋白水平、肌酐水平差异有统计学意义(P<0.05)。疾病组患者乳酸杆菌丰度为(5.89±0.87)LogN/g,双歧杆菌丰度为(6.45±0.98)LogN/g,大肠埃希菌丰度为(9.59±1.20)LogN/g,拟杆菌丰度为(6.89±0.95)LogN/g,肠球菌丰度为(8.71±1.29)LogN/g,健康对照组乳酸杆菌丰度为(7.43±0.99)LogN/g,双歧杆菌丰度为(9.62±1.37)LogN/g,大肠埃希菌丰度为(6.61±0.99)LogN/g,拟杆菌丰度为(8.72±0.79)LogN/g,肠球菌丰度为(7.18±0.95)LogN/g。两组患者乳酸杆菌、双歧杆菌、大肠埃希菌、拟杆菌、肠球菌丰度差异均有统计学意义(P<0.05)。疾病组患者血清TNF-α为(20.87±5.05)ng/L,IL-6为(93.48±10.44)ng/L,IL-17为(62.68±7.07)ng/L。健康对照组血清TNF-α为(8.52±2.64)ng/L,IL-6为(8.13±3.26)ng/L,IL-17为(21.12±4.10)ng/L。与健康对照组相比,疾病组患者血清TNF-α、IL-6、IL-17均显著升高(P<0.05)。乳酸杆菌丰度与TNF-α、IL-6、IL-17水平均呈负相关(P<0.05),双歧杆菌丰度与TNF-α、IL-6、IL-17水平均呈负相关(P<0.05),大肠埃希菌丰度与TNF-α、IL-6、IL-17水平均呈正相关(P<0.05),拟杆菌丰度与TNF-α、IL-6、IL-17水平均呈负相关(P<0.05),肠球菌丰度与TNF-α、IL-6、IL-17水平均呈正相关(P<0.05)。结论原发性肾小球疾病患者主要为膜性肾病,肠道菌群与炎症因子水平较健康人群均发生变化,乳酸杆菌、双歧杆菌、拟杆菌丰度与TNF-α、IL-6、IL-17呈负相关,大肠埃希菌、肠球菌丰度与TNF-α、IL-6、IL-17呈正相关。

关键词：原发性肾小球疾病肠道菌群炎症因子

心脏超声筛查诊断胎儿先天性心脏病的价值分析

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中国社区医师 2024年第12期40卷 97-99页

作者：李朝辉黄冈市浠水县妇幼保健院湖北黄冈438200

目的:分析心脏超声筛查诊断胎儿先天性心脏病的价值。方法:选取2020年6月—2022年6月于黄冈市浠水县妇幼保健院进行产检的孕妇80例作为研究对象,所有孕妇行常规超声检查、心脏超声筛查及超声心动图检查,以超声心动图检查结果为“金标准... 详细信息

目的:分析心脏超声筛查诊断胎儿先天性心脏病的价值。方法:选取2020年6月—2022年6月于黄冈市浠水县妇幼保健院进行产检的孕妇80例作为研究对象,所有孕妇行常规超声检查、心脏超声筛查及超声心动图检查,以超声心动图检查结果为“金标准”,分析不同检查方式的诊断效能。结果:超声心动图结果显示,80例研究对象中,胎儿先天性心脏病阳性17例,阴性63例。心脏超声筛查诊断胎儿先天性心脏病的准确度、灵敏度、特异度高于常规超声检查,差异有统计学意义(P0.05)。结论:心脏超声筛查在胎儿先天性心脏病的诊断中具有较高的准确度、灵敏度及特异度,值得临床应用并予以推广。

关键词：心脏超声筛查先天性心脏病诊断效能