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The Effect of Ionic Strength on the Electrochemiluminescence Generation by Tris(2,2′-bipyridyl)ruthenium(II)/Tri-n-propylamine

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Chemical Research in Chinese Universities 2022年第3期38卷 816-822页

作者： HU Shifan WANG Yafeng su Bin Institute of Analytical Chemistry Department of ChemistryKey Laboratory of Excited-State Materials of Zhejiang ProvinceZhejiang UniversityHangzhou310058P.R.China

Electrochemiluminescence(ECL)is a powerful transduction technique used in biosensing and in vitro diagnosis,while the mechanism of ECL generation is complicated and affected by various *** the effect of ionic strength on ECL generation by the classical tris(2,2′-bipyridyl)ruthenium(II)[Ru(bpy)_(3)^(2+)]/tri-n-propylamine(TPrA)system was *** is clear that the ECL intensity decreases significantly with the increase of ionic strength,most likely arising from the reduced deprotonation rate of TPrA^(+)·.We further combined microtube electrode(MTE)with ECL microscopy to unravel the evolution of ECL layer with the variation of ionic *** a low concentration of Ru(bpy)_(3)^(2+),the thickness of ECL layer(TEL)nearly kept unchanged with the ionic strength,indicating the surface-confined ECL generation is dominated by the oxidative-reduction *** at a high concentration of Ru(bpy)_(3)^(2+),ECL generation is dominated by the catalytic route and TEL increases remarkably with the increase of ionic strength,because of the extended diffusion length of Ru(bpy)_(3)^(3+) at a reduced concentration of TPrA·.

关键词： Electrochemiluminescence(ECL) ECL layer thickness ECL microscopy Ionic strength Reaction mechanism

A TDMA Approach for OFDM-Based Multiuser RadCom Systems

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China Communications 2023年第5期20卷 93-103页

作者： Yixuan Huang su Hu Gang Wu National Key Laboratory on Communications University of Electronic Science and Technology of ChinaChengdu 611731China

This paper is focused on the multiuser implementation of fusion of radar and communication(RadCom)in internet-of-vehicles(IoV)*** time-division multiple access(TDMA)technology degrades the velocity detection performance of orthogonal frequency-division multiplexing(OFDM)-based RadCom *** propose a new TDMA approach for OFDM-based RadCom systems,where multiuser communication and radar detection are completed *** consider a continuous-wave TDMA OFDM structure in which random user data or Zadoff-Chu(ZC)sequences are transmitted in one symbol duration to ensure detection *** an application of interference cancellation method,user data demodulation and environment sensing can be simultaneously accomplished by our proposed *** carry out numerical evaluation and show wireless communication and radar detection performance over the continuous-wave TDMA OFDM-based RadCom approach.

关键词： RadCom time-division multiple access(TDMA) orthogonal frequency-division multiplexing(OFDM) internet-of-vehicles(IoV)

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气压湿度对空气隙绝缘特性的影响研究

高压电器 2024年第1期60卷 78-86页

作者：苏梦函安韵竹赵文龙胡元潮李海涛黄涛山东理工大学电气与电子工程学院山东淄博255000 中国人民解放军空军研究院北京100000 国网江苏省电力工程咨询有限公司南京210000

外界环境条件影响以空气为介质的电力设备外绝缘性能,为了研究空气放电的物理特性,文中基于Boltzmann方程研究空气中电子与分子碰撞的微观过程,计算分析气压、湿度对空气隙绝缘性能的影响规律。结果表明,温度为300 K,气压为1.0 atm(1 at... 详细信息

外界环境条件影响以空气为介质的电力设备外绝缘性能,为了研究空气放电的物理特性,文中基于Boltzmann方程研究空气中电子与分子碰撞的微观过程,计算分析气压、湿度对空气隙绝缘性能的影响规律。结果表明,温度为300 K,气压为1.0 atm(1 atm=101 kPa)时,空气相对湿度的升高会改变电子能量分布函数和电子输运参数。相对湿度每升高30%,电子平均能量下降约0.2 eV,约化电子迁移率下降约0.25×10^(23)(V∙m∙s)^(-1),约化电子扩散系数下降约0.2×10^(24)(m∙s)^(-1),空气相对湿度从0%升高到30%,临界击穿场强升高486 V/cm,空气相对湿度从30%升高到60%,临界击穿场强升高729 V/cm,空气隙绝缘性能增强;温度为300 K,相对湿度为0%时,气压每升高0.2 atm,临界击穿场强升高约6 kV/cm,空气隙绝缘性能增强。

关键词：湿度气压玻尔兹曼方程电子能量分布函数临界击穿场强

SnFe_(2)O_(4)/ZnIn_(2)S_(4)/PVDF piezophotocatalyst with improved photocatalytic hydrogen production by synergetic effects of heterojunction and piezoelectricity

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Journal of Advanced Ceramics 2023年第9期12卷 1685-1700页

作者： Ping su Dezhi Kong Huaihao Zhao Shangkun Li Dafeng Zhang Xipeng Pu Changhua su Peiqing Cai School of Materials Science and Engineering Shandong Key Laboratory of Chemical Energy Storage and New Battery TechnologyLiaocheng UniversityLiaocheng 252000China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China

The polarized electric field inside piezoelectric materials has been proven to be a promising technique to boost photogenerated charge ***,a novel flexible SnFe_(2)O_(4)/ZnIn_(2)S_(4)/polyvinylidene fluoride((CH2CF2)_(n),PVDF)(P-SZ)film piezophotocatalyst was successfully synthesized by combining PVDF,an organic piezoelectric material,with a SnFe_(2)O_(4)/ZnIn_(2)S_(4)(SFO/ZIS)type II heterojunction *** hydrogen evolution rate of SFO/ZIS heterojunction with a SFO content of 5%is about 846.79μmol·h^(−1)·g^(−1),which is 3.6 times that of pristine ***,after being combined with PVDF,the optimum hydrogen evolution rate of P-SZ is about 1652.7μmol·h^(−1)·g^(−1)in the presence of ultrasound,which exceeds that of 5%SFO/ZIS by an approximate factor of *** on experimental results,the mechanism of the improved photocatalytic performance of P-SZ was proposed on the basis of the piezoelectric field in PVDF and the formed heterojunction between SFO and ZIS,which effectively boosted the separation of photoinduced *** work provides an efficient strategy for multi-path collection and utilization of natural solar and vibrational energy to enhance photoactivity.

关键词： heterojunction piezophotocatalysis SnFe_(2)O_(4)(SFO) ZnIn_(2)S_(4)(ZIS) polyvinylidene fluoride((CH_(2)CF_(2))_(n),PVDF)film

中药糖肽的提取分离、结构鉴定及药理作用研究现状与展望

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中国中药杂志 2024年第17期49卷 4637-4649页

作者：高叶陈晓艺郭盛宿树兰段金廒肖平南京中医药大学江苏省中药资源产业化过程协同创新中心/中药资源产业化与方剂创新药物国家地方联合工程研究中心/国家中医药管理局中药资源循环利用重点研究室江苏南京210023

中药糖肽作为一类具有重要生物活性的天然产物,近年来备受关注。该类物质具有抗肿瘤、免疫调节、神经保护、抗炎等多种药理作用。提取和分离直接影响糖肽的得率和纯度,而结构鉴定对于深入理解糖肽的特性和作用机制至关重要。该文对中药... 详细信息

中药糖肽作为一类具有重要生物活性的天然产物,近年来备受关注。该类物质具有抗肿瘤、免疫调节、神经保护、抗炎等多种药理作用。提取和分离直接影响糖肽的得率和纯度,而结构鉴定对于深入理解糖肽的特性和作用机制至关重要。该文对中药糖肽在提取分离、结构鉴定和药理作用研究方面的现状进行了综述,并展望了未来的研究方向。尽管中药糖肽研究取得了一定进展,但依然面临着提取效率低、分离周期长、结构难鉴定、作用机制难阐释等挑战。为应对这些问题,未来的研究可以在不断优化糖肽提取方法的同时,开发新的分离技术并发展高效的结构鉴定方法。同时,深入研究中药糖肽的药理作用机制,将有助于为其在药物开发和临床应用中发挥更大作用提供科学依据。

关键词：中药糖肽提取分离纯化结构鉴定药理作用

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一株牛呼吸道冠状病毒的分离鉴定及部分生物学特征

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畜牧兽医学报 2024年第7期55卷 3094-3104页

作者：班玛王清陈曦岳怡苏玉蓉岳华汤承西南民族大学畜牧兽医学院成都610041 四川省阿坝州动物疫病预防控制中心阿坝州624011

牛冠状病毒(bovine coronavirus,BCoV)是引起牛呼吸道疾病和消化道疾病的重要病原之一。本研究旨在分离牛呼吸道冠状病毒(BRCV)并研究其部分生物学特性。采集暴发呼吸道疾病的肉牛鼻拭子,经荧光定量PCR鉴定为BCoV阳性。将阳性样本接种... 详细信息

牛冠状病毒(bovine coronavirus,BCoV)是引起牛呼吸道疾病和消化道疾病的重要病原之一。本研究旨在分离牛呼吸道冠状病毒(BRCV)并研究其部分生物学特性。采集暴发呼吸道疾病的肉牛鼻拭子,经荧光定量PCR鉴定为BCoV阳性。将阳性样本接种人盲肠腺癌细胞(HCT-8),分离纯化后,对引起细胞病变的病毒分离株的S和HE基因进行序列测定和系统发育分析,并将病毒分离株接种BALB/c小鼠进行致病性研究。结果显示,成功分离到1株致细胞病变的毒株,经荧光定量PCR、间接免疫荧光和电镜观察鉴定为BRCV,蚀斑纯化后计算病毒TCID_(50)为10^(-8.46)·0.1 mL^(-1)。S基因和HE基因序列分析表明两种基因均发生重组事件;S蛋白具有2个独特的氨基酸突变(A33G和A975V),分别位于S1亚基的受体结合域和S2亚基;HE基因具有2个独特的氨基酸突变(L235R和L365F),分别位于凝集素域和近膜端域。分离株对4周龄BALB/c小鼠具有较强的致病性,能够引起小鼠呼吸加快和腹泻等临床症状,剖检和组织病理学显示肺和肠道出血,病毒主要分布在肺和肠组织,以肺组织中病毒载量最高。本研究首次在国内肉牛中分离到1株BRCV,S和HE基因分子有独特氨基酸突变,成功建立了小鼠感染模型,为进一步研究BCoV的生物学特性和遗传进化提供了参考。

关键词：牛呼吸道冠状病毒 S基因 HE基因小鼠致病性

Stabilizability of minimum-phase systems with colored multiplicative uncertainty

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Control Theory and Technology 2022年第3期20卷 382-391页

作者： Junhui Li Jieying Lu Weizhou su School of Automation Science and Engineering South China University of TechnologyWushanGuangzhou510641GuangdongChina

This work addresses the mean-square stability and stabilizability problem for minimum-phase multi-input and multi-output(MIMO)plant with a novel colored multiplicative feedback *** proposed uncertainty is generalization of the *** noise and assumed to be a stochastic system with random finite impulse response(FIR),which has advantage on modeling a class of network phenomena such as random transmission delays.A concept of coefficient of frequency variation is developed to characterize the proposed ***,the mean-square stability for the system is derived,which is a generalization of the well-known mean-square small gain *** on this,the mean-square stabilizability condition is established,which reveals the inherent connection between the stabilizability and the plant’s unstable poles and the coefficient of frequency variation of the *** result is verified by a numerical example on the stabilizability of a networked system with random transmission delay as well as analog erasure channel.

关键词： Mean-square stability Mean-square stabilizability Colored multiplicative noise Networked control system

Correction:Brillouin scattering spectrum for liquid detection and applications in oceanography

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Opto-Electronic Advances 2024年第1期7卷 47-47页

作者： Yuanqing Wang Jinghao Zhang Yongchao Zheng Yangrui Xu Jiaqi Xu Jiao Jiao Yun su Hai-Feng Lü Kun Liang School of Electronic Information and Communications Huazhong University of Science and TechnologyWuhan 430074China Beijing Institute of Space Mechanics and Electricity Beijing 100076China School of Physics and School of Aeronautics and Astronautics University of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China

After publication of this article1,it was brought to our at-tention that the mathematical expressions‘‰’were mis-takenly replaced by‘%’for *** are listed *** the last sentence in abstract,“approximately 0.1℃and... 详细信息

关键词： scattering listed spectrum

巴利昔单抗短期替代钙调蛋白抑制剂预防急性移植物抗宿主病的探索性研究

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中华血液学杂志 2024年第2期45卷 115-120页

作者：邵珊刘慧霞蒋瑛李肃魏道林朱骏王椿赵初娴上海闸新中西医结合医院骨髓移植科上海200040

目的探讨在钙调蛋白抑制剂(CNI)不耐受患者中短期应用重组抗CD25人源化单克隆抗体巴利昔单抗(Basiliximab)单药预防异基因造血干细胞移植(allo-HSCT)后急性移植物抗宿主病(GVHD)的有效性。方法本研究纳入2021年8月至2022年8月在上海闸... 详细信息

目的探讨在钙调蛋白抑制剂(CNI)不耐受患者中短期应用重组抗CD25人源化单克隆抗体巴利昔单抗(Basiliximab)单药预防异基因造血干细胞移植(allo-HSCT)后急性移植物抗宿主病(GVHD)的有效性。方法本研究纳入2021年8月至2022年8月在上海闸新中西医结合医院骨髓移植科行挽救性allo-HSCT后因CNI严重不良反应而应用巴利昔单抗预防急性GVHD的17例难治性恶性血液病患者。男7例,女10例,中位年龄43(18~67)岁。停用CNI后,给予巴利昔单抗1 mg/kg每周1次进行替代预防,直至患者有条件重新启用CNI或哺乳动物雷帕霉素靶体蛋白(mTOR)抑制剂。结果巴利昔单抗的替代预防中位开始时间为移植后5(1~32)d,替代治疗中位持续时间为20(7~120)d。所有患者均获得粒细胞植入,中位植入时间12(10~17)d。13例患者获得血小板植入,中位植入时间13(11~20)d。8例(47.1%)患者发生Ⅱ~Ⅳ度急性GVHD,4例(23.6%)发生Ⅲ/Ⅳ度急性GVHD。仅有1例患者死于急性GVHD。至随访截止,17例患者中7例死亡,存活患者中随访最长时间为347 d,中位生存时间未达到,移植后6个月总生存率为62.6%。17例患者中,13例(76.4%)发生巨细胞病毒再激活,7例(41.2%)发生EB病毒激活,未发生巨细胞病毒病。结论在allo-HSCT过程中出现CNI不耐受时,短期单药应用巴利昔单抗可作为急性GVHD的替代预防方案。

关键词：重组抗CD25人源化单克隆抗体异基因造血干细胞移植钙调蛋白抑制剂移植物抗宿主病