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室温驱动腐植酸钠基碳纳米簇用于荧光比色检测银离子和温度传感

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高等学校化学学报 2024年第6期45卷 44-60页

作者：李林马静许畅琳陈彤瑶郭衡瑶李紫悠武文鑫太原师范学院化学与材料学院晋中030619 山西省腐植酸工程技术研究中心晋中036019 山西省蛋白质基功能材料实验室晋中036019

基于氢键结合自组装策略,以富含羟基的高生物相容性煤源腐植酸钠大分子和抗坏血酸为原料,通过绿色经济的室温方法构建了一种低毒水溶性青色荧光碳纳米簇(HAN-CNCs).研究发现,在p H=5.0条件下,ag^(+)可与HAN-CNCs表面的C=N/C=O基团配位结... 详细信息

基于氢键结合自组装策略,以富含羟基的高生物相容性煤源腐植酸钠大分子和抗坏血酸为原料,通过绿色经济的室温方法构建了一种低毒水溶性青色荧光碳纳米簇(HAN-CNCs).研究发现,在p H=5.0条件下,ag^(+)可与HAN-CNCs表面的C=N/C=O基团配位结合,从而诱导HAN-CNCs发生荧光静态猝灭,实现对ag^(+)较宽线性范围(5.0~300μmol/L)和较低检出限(27.5 nmol/L)的特异灵敏检测.进一步观察发现,ag^(+)与HAN-CNCs相互作用后,HAN-CNCs在日光灯下由淡黄色变为灰蓝色,在紫外灯下由青色荧光变为蓝紫色,基于此,将HAN-CNCs制作成便携式纸基传感器,通过手机分析测试条颜色的G/B值,实现了ag^(+)的视觉比色荧光检测.此外,HAN-CNCs在20~85℃范围内表现出优异的可逆热响应性能,有望作为一种温度传感器.荧光显微镜成像测试发现,HAN-CNCs在选择性检测活细胞中的ag^(+)时表现出低生物毒性和优异的细胞渗透性,表明该传感系统可应用于评估人体潜在风险和健康安全.

关键词：煤基腐植酸钠碳纳米簇室温驱动银离子比色荧光检测温度传感

VPS33B与GP1BA基因双重杂合变异致血浆VWF水平严重降低:1例报告及文献复习

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中华血液学杂志 2024年第6期45卷 602-605页

作者：马思倩白霞曹丽娟马珍妮丁子轩余自强江淼苏州大学附属独墅湖医院血液科苏州215028 国家血液系统疾病临床医学研究中心苏州大学附属第一医院江苏省血液研究所苏州215007 卫健委血栓与止血重点实验室苏州215006

一例28岁女性,孕期常规体检发现凝血因子Ⅷ活性(FⅧ∶C)C,携带该变异的家系成员均有不同程度的VWF水平降低(39%~56%)。同时,先证者还检出GP1BA基因杂合变异c.1474dupA,ACMG及Clinvar数据库判断该变异与"血小板型假性VWD"相关。VPS33B基... 详细信息

一例28岁女性,孕期常规体检发现凝血因子Ⅷ活性(FⅧ∶C)ag)C,携带该变异的家系成员均有不同程度的VWF水平降低(39%~56%)。同时,先证者还检出GP1BA基因杂合变异c.1474dupA,ACMG及Clinvar数据库判断该变异与"血小板型假性VWD"相关。VPS33B基因杂合变异导致的VWF水平降低家系为国际首次报道,VPS33B基因与GP1BA基因双重杂合变异引起血浆VWF水平严重降低病例之前也未见报道。

关键词：家系成员常规体检血管性血友病先证者 GP1 全基因组测序 VPS 二代测序

Adaptive Power Control Aware Depth Routing in Underwater Sensor Networks

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Computers, materials & Continua 2021年第10期69卷 1301-1322页

作者： Ghufran Ahmed Saiful Islam Ihsan Ali Isra Adil Hayder Abdelmuttlib Ibrahim Abdalla Ahmed Muhammad Talha Sultan S.Alshamrani ag Asri ag Ibrahim Department of Computer Science FAST National University of Computer and Emerging Sciences(NUCES)KarachiPakistan Dr.A.Q.Khan Institute of Computer Sciences and Information Technology KahutaPakistan Faculty of Computer Science and Information Technology University of MalayaKuala Lumpur50603Malaysia Department of Computer Science COMSATS University IslamabadIslamabadPakistan Deanship of Scientific Research King Saud UniversityRiyadhSaudi Arabia Department of Information Technology College of Computer and Information TechnologyTaif UniversityTaif21944Saudi Arabia Faculty of Computing and Informatics Universiti Malaysia SabahKota KinabaluSabahMalaysia

Underwater acoustic sensor network(UASN)refers to a procedure that promotes a broad spectrum of aquatic *** can be practically applied in seismic checking,ocean mine identification,resource exploration,pollution checking,and disaster *** confronts many difficulties and issues,such as low bandwidth,node movements,propagation delay,3D arrangement,energy limitation,and high-cost production and arrangement costs caused by antagonistic underwater *** wireless sensor networks(UWSNs)are considered a major issue being encountered in energy management because of the limited battery power of their ***,the harsh underwater environment requires vendors to design and deploy energy-hungry devices to fulfil the communication requirements and maintain an acceptable quality of ***,increased transmission power levels result in higher channel interference,thereby increasing packet *** the facts mentioned above,this research presents a controlled transmission power-based sparsity-aware energy-efficient clustering in *** contributions of this technique is ***,it uses the adaptive power control mechanism to utilize the sensor nodes’battery and reduce channel interference ***,thresholds are defined to ensure successful ***,clustering can be implemented in dense areas to decrease the repetitive transmission that ultimately affects the energy consumption of nodes and interference ***,mobile sinks are deployed to gather information locally to achieve the previously mentioned *** suggested protocol is meticulously examined through extensive simulations and is validated through comparison with other advanced UWSN *** show that the suggested protocol outperforms other procedures in terms of network lifetime and packet delivery ratio.

关键词： UWSNs UASNs QoS

agPd双金属纳米空心球的合成及其催化性能

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无机化学学报 2024年第5期40卷 963-971页

作者：张桂敏马文娟丁文强傅正义武汉理工大学化学化工与生命科学学院武汉430070 武汉理工大学材料复合新技术国家重点实验室武汉430070

以ag纳米颗粒为牺牲模板,H_(2)PdCl_(4)为前驱体,抗坏血酸为还原剂,聚乙烯吡咯烷酮为表面活性剂,在70℃下采用电偶置换法结合还原法制备出agPd双金属纳米空心球。采用紫外可见光谱、粉末X射线衍射、透射电镜结合能量色散等手段对由不同... 详细信息

以ag纳米颗粒为牺牲模板,H_(2)PdCl_(4)为前驱体,抗坏血酸为还原剂,聚乙烯吡咯烷酮为表面活性剂,在70℃下采用电偶置换法结合还原法制备出agPd双金属纳米空心球。采用紫外可见光谱、粉末X射线衍射、透射电镜结合能量色散等手段对由不同体积的0.01 mol·L^(-1)H_(2)PdCl_(4)溶液制备的产物进行结构表征。结果表明,随着H_(2)PdCl_(4)溶液体积的增加,产物的空心化程度逐渐升高,晶粒的尺寸逐渐增大。当H_(2)PdCl_(4)溶液体积为120μL时,合成的agPd双金属纳米空心球组成和结构较为均匀,其粒径约为25 nm,壳层厚度2~3 nm。双金属中,由于ag和Pd电负性的差异,电子从ag转移到了Pd,使Pd表面出现电子富集区,显著提高了其催化效率。将所合成的agPd双金属以及纯金属ag和Pd作为催化剂,分别用于硼氢化钠催化还原4-硝基苯酚的反应,发现agPd双金属的催化性能远高于纯金属ag和Pd,其中agPd-120纳米空心球(H_(2)PdCl_(4)溶液体积120μL)作催化剂时的反应速率常数最高,是同等尺寸纯ag纳米球的24.0倍,纯Pd纳米立方体的14.7倍。

关键词： agPd双金属纳米空心球电偶置换 4-硝基苯酚催化还原

(Ba,K)Fe_(2)As_(2)铁基超导多芯线材的晶间耦合强化与性能提高

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Science China materials 2024年第1期67卷 301-310页

作者：郭文文姚超熊颢杨鹏涂畅马衍伟 Key Laboratory of Applied Superconductivity Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology Qilu ZhongkeJinan 250013China School of materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

铁基超导材料在高场超导磁体领域具有很大的应用潜力,而研究具有高传输临界电流密度的多芯复合包套线材对于其实际应用至关重要.本研究基于粉末装管法,结合孔型轧制工艺和热等静压烧结工艺制备了多芯Cu/ag复合包套(Ba,K)Fe_(2)As_(2)(Ba... 详细信息

铁基超导材料在高场超导磁体领域具有很大的应用潜力,而研究具有高传输临界电流密度的多芯复合包套线材对于其实际应用至关重要.本研究基于粉末装管法,结合孔型轧制工艺和热等静压烧结工艺制备了多芯Cu/ag复合包套(Ba,K)Fe_(2)As_(2)(Ba-122)超导线材.通过对不同直径线材中Ba-122超导芯的质量密度、晶粒取向、晶粒尺寸、元素分布与线材的电流传输性能之间的关系进行系统研究,我们发现线径较小的样品中超导晶粒间的耦合得到了显著增强,其传输临界电流密度在4.2 K,10 T下达到3.3×10^(4)A cm^(-2),同时由于晶粒尺寸和超导芯丝的均匀性得到改善,其电流传输的一致性(n值)也获得有效提高.本研究为制备高性能、高度均匀的铁基超导多芯线材提供了一种可规模化的工艺路线,对促进铁基超导材料的高场强电应用有重要意义.

关键词：热等静压烧结孔型轧制晶粒取向临界电流密度晶粒间质量密度晶粒尺寸工艺路线

PSO Based Multi-Objective Approach for Controlling PID Controller

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Computers, materials & Continua 2022年第6期71卷 4409-4423页

作者： Harsh Goud Prakash Chandra Sharma Kashif Nisar ag.Asri ag.Ibrahim Muhammad Reazul Haque Narendra Singh Yadav Pankaj Swarnkar manoj Gupta Laxmi Chand Indian Institute of Information Technology NagpurIndia School of Computing&Information Technology Manipal UniversityJaipur(Rajasthan)India Faculty of Computing and Informatics University Malaysia SabahJalan UMS88400Kota Kinabalu SabahMalaysia Faculty of Computing&Informatics Multimedia UniversityPersiaran Multimedia63100CyberjayaSelangorMalaysia maulana Azad National Institute of Technology BhopalIndia Department of Electronics and Communication Engineering JECRC UniversityJaipur(Rajasthan)India

CSTR(Continuous stirred tank reactor)is employed in process control and chemical industries to improve response characteristics and system *** has a highly nonlinear characteristic that includes complexities in its control and *** performance is compassionate to change in system parameterswhich need more effort for planning a significant controller for *** reactor temperature changes in either direction from the defined reference *** is important to note that the intensity of chemical actions inside the CSTR is dependent on the various levels of temperature,and deviation from reference values may cause degradation of biomass *** and implementation of an appropriate adaptive controller for such a nonlinear system are *** this paper,a conventional Proportional Integral Derivative(PID)controller is *** conventional techniques to deal with constraints suffer severe limitations like it has fixed controller ***,A novel method is applied for computing the PID controller parameters using a swarm algorithm that overcomes the conventional controller’s *** the proposed technique,PID parameters are tuned by Particle Swarm Optimization(PSO).It is not easy to choose the suitable objective function to design a PID controller using PSO to get an optimal *** this article,a multi-objective function is proposed for PSO based controller design of CSTR.

关键词： Particle swarm optimization multi-objective PSO continuous stirred tank reactor proportional integral derivative controller

卡瑞利珠单抗联合化疗治疗晚期食管鳞状细胞癌的近期疗效观察

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中国现代药物应用 2024年第12期18卷 129-131页

作者：马春明营口市中医院肿瘤内科 115000

目的分析在化疗基础上应用卡瑞利珠单抗对晚期食管鳞状细胞癌(ESCC)患者近期疗效的影响。方法晚期食管鳞状细胞癌患者68例,采用随机法将其分为对照组(35例)和观察组(33例)。对照组患者给予单纯化疗,观察组在单纯化疗基础上加用卡瑞利珠... 详细信息

目的分析在化疗基础上应用卡瑞利珠单抗对晚期食管鳞状细胞癌(ESCC)患者近期疗效的影响。方法晚期食管鳞状细胞癌患者68例,采用随机法将其分为对照组(35例)和观察组(33例)。对照组患者给予单纯化疗,观察组在单纯化疗基础上加用卡瑞利珠单抗治疗。比较两组患者临床疗效、不良反应发生情况以及治疗前后的血清肿瘤标志物[癌胚抗原(CEA)、鳞状上皮细胞癌抗原(SCC-ag)、细胞角蛋白19片段抗原21-1(CYFra21-1)]水平。结果治疗后,与对照组的34.29%、51.43%相比,观察组的客观缓解率(ORR)60.61%、疾病控制率(DCR)81.82%明显更高(Pag、CYFra21-1水平较治疗前均明显下降,且观察组下降幅度较对照组更明显(P0.05)。结论卡瑞利珠单抗联合化疗治疗晚期食管鳞状细胞癌患者,能够显著降低患者相关肿瘤标志物水平,缓解临床症状,提高治疗效果,并且未见明显不良反应,值得临床推荐和使用。

关键词：食管鳞状细胞癌放疗卡瑞利珠单抗临床疗效安全性

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基于ANN的混凝土均匀化方法解析解

应用数学和力学 2024年第5期45卷 554-570页

作者：刘溢凡马小敏王志勇王志华太原理工大学机械与运载工程学院应用力学研究所太原030024 材料强度与结构冲击山西省重点实验室太原030024

通过自定义人工神经网络(artificial neural network,ANN),借助其优秀的函数拟合功能,针对骨料/砂浆基质二相混凝土,求解间接均匀化理论中微分法的高度非线性耦合微分方程的解析解,得到了混凝土体积模量和剪切模量分别与骨料体积分数的... 详细信息

通过自定义人工神经网络(artificial neural network,ANN),借助其优秀的函数拟合功能,针对骨料/砂浆基质二相混凝土,求解间接均匀化理论中微分法的高度非线性耦合微分方程的解析解,得到了混凝土体积模量和剪切模量分别与骨料体积分数的函数关系,并与数值模拟的结果进行了对比.结果表明,基于ANN的求解方法快速且具有更高的精度.此外,通过解构ANN的方法给出了在细观力学参数不变的条件下由骨料体积分数、初始孔隙率直接计算骨料/砂浆基质/孔隙三相混凝土弹性模量的公式.结果表明,对于不同骨料体积分数和初始孔隙率的混凝土样本,该公式均有较高的计算精度,同时避免了传统均匀化方法的复杂分析和大量假设,为复合材料均匀化方法研究提供了新思路.

关键词：人工神经网络混凝土均匀化微分方程弹性模量

Metaheuristics Algorithm for Tuning of PID Controller of Mobile Robot System

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Computers, materials & Continua 2022年第8期72卷 3481-3492页

作者： Harsh Goud Prakash Chandra Sharma Kashif Nisar Muhammad Reazul Haque ag.Asri ag.Ibrahim Narendra Singh Yadav Pankaj Swarnkar manoj Gupta Laxmi Chand Indian Institute of Information Technology NagpurIndia School of Computing&Information Technology Manipal UniversityJaipurRajasthanIndia Faculty of Computing and Informatics University Malaysia SabahJalan UMSKota Kinabalu88400SabahMalaysia Faculty of Computing&Informatics Multimedia UniversityPersiaran MultimediaCyberjaya63100SelangorMalaysia maulana Azad National Institute of Technology BhopalIndia Department of Electronics and Communication Engineering JECRC UniversityJaipurRajasthanIndia Department of Computer Science and Engineering Hanyang UniversitySeongdong-guSeoul04763Korea

Robots in the medical industry are becoming more common in daily life because of various advantages such as quick response,less human interference,high dependability,improved hygiene,and reduced aging *** is why,in recent years,robotic aid has emerged as a blossoming solution to many challenges in the medical *** this manuscript,meta-heuristics(MH)algorithms,specifically the Firefly Algorithm(FF)and Genetic Algorithm(GA),are applied to tune PID controller constraints such as Proportional gain Kp Integral gain Ki and Derivative gain *** controller is used to control Mobile Robot System(MRS)at the required set *** FF arrangements are made based on various pre-analysis.A detailed simulation study indicates that the proposed PID controller tuned with Firefly Algorithm(FF-PID)for MRSis beneficial and suitable to achieve desired closed-loop system *** FF is touted as providing an easy,reliable,and efficient tuning technique for PID *** most suitable ideal performance is accomplished with FF-PID,according to the display in the time ***,the observed response is compared to those received by applying GA and conventional off-line tuning *** comparison of all tuning methods exhibits supremacy of FF-PID tuning of the given nonlinear Mobile Robot System than GA-PID tuning and conventional controller.

关键词： Metaheuristic algorithm genetic algorithm PID controller mobile robot system firefly algorithm