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Fixed-Time Cluster Optimization for Multi-Agent Systems Based on Piecewise Power-Law Design

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1301-1303页

作者： suna Duan Xinchun Jia Xiaobo Chi School of Mathematical Sciences Shanxi UniversityTaiyuan 030006China School of Automation and Software Engineering Shanxi UniversityTaiyuan 030013China

Dear Editor,This letter focuses on the fixed-time(FXT)cluster optimization problem of first-order multi-agent systems(FOMASs)in an undirected network,in which the optimization objective is the sum of the objective functions of all clusters.A novel piecewise power-law control protocol with cooperative-competition relations is ***,a sufficient condition is obtained to ensure that the FOMASs achieve the cluster consensus within an FXT.

关键词： agent cluster optimization

EFFICIENT SPECTRAL METHODS FOR EIGENVALUE PROBLEMS OF THE INTEGRAL FRACTIONAL LAPLACIAN ONABALLOFANYDIMENSION

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Journal of Computational Mathematics 2024年第4期42卷 1032-1062页

作者： suna Ma Huiyuan Li Zhimin Zhang Hu Chen Lizhen Chen College of Science Nanjing University of Posts and TelecommunicationsNanjingChina State Key Laboratory of Computer Science/Laboratory of Parallel Computing Institute of SoftwareChinese Academy of SciencesBeijingChina Department of Mathematics Wayne State UniversityDetroitUSA School of Mathematical Sciences Ocean University of ChinaQingdaoChina Beijing Computational Science Research Center BeijingChina

An efficient spectral-Galerkin method for eigenvalue problems of the integral fractional Laplacian on a unit ball of any dimension is proposed in this *** symmetric positive definite linear system is retained explicitly which plays an important role in the numerical *** a sharp estimate on the algebraic system's condition number is established which behaves as N4s with respect to the polynomial degree N,where 2s is the fractional derivative *** regularity estimate of solutions to source problems of the fractional Laplacian in arbitrary dimensions is firstly investigated in weighted Sobolev *** the regularity of eigenfunctions of the fractional Laplacian eigenvalue problem is readily ***,rigorous error estimates of the eigenvalues and eigenvectors are *** experiments are presented to demonstrate the accuracy and efficiency and to validate the theoretical results.

关键词： Integral fractional Laplacian Spectral method Eigenvalue problem Regularity analysis Error estimate

Piezoelectric fibers based on silk fibroin with excellent output performance

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Chinese Physics B 2024年第8期33卷 128-135页

作者：甄文强陈杰范苏娜张耀鹏 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

The self-powered tissue engineering scaffold with good biocompatibility is of great significance for stimulating nerve cell *** this study,silk fibroin(SF)-based fibers with regulatable structure and piezoelectric performance are fabricated by dry-spinning and *** concentration of SF and calcium ion in spinning dope and the post-treatment affect the conformation transition and crystallinity of *** a result,the SF fibers exhibit high piezoelectric coefficient d_(33)(3.24 pm/V)and output voltage(~27 V).Furthermore,these piezoelectric fibers promote the growth of PC-12 cells,demonstrating the promising potential for nerve repair and other energy harvester.

关键词： silk fibroin piezoelectric fiber dry-spinning conformation transition

Inhibition of Ehrlich ascites carcinoma growth by melatonin:Studies with micro-CT

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Oncology Research 2024年第1期32卷 175-185页

作者： SEHER YILMAZ ZÜLEYHA DOĞANYIĞIT MERT OCAK EVRIM suna ARIKAN SÖYLEMEZ ASLI OKAN OFLAMAZ SÜMEYYE UÇAR ŞÜKRÜATEŞ AMMAD AHMAD FAROOQI Department of Anatomy Faculty of MedicineYozgat Bozok UniversityYozgatTurkey Department of Mechanical and Aerospace Engineering Case Western Reserve UniversityClevelandOhioUSA Department of Histology and Embriology Faculty of MedicineYozgat Bozok UniversityYozgatTurkey Department of Anatomy Faculty of DentistryAnkara UniversityAnkaraTurkey Department of Medical Biology Faculty of MedicineAfyonkarahisar Health Sciences UniversityAfyonTurkey Department of Anatomy Faculty of MedicineErciyes UniversityKayseriTurkey Department of Molecular Oncology Institute of Biomedical and Genetic Engineering(IBGE)IslamabadPakistan

Melatonin is a versatile indolamine synthesized and secreted by the pineal gland in response to the photoperiodic information received by the retinohypothalamic signaling *** has many benefits,such as organizing circadian rhythms and acting as a powerful *** aimed to show the antitumor effects of melatonin in both in vivo and in vitro models through the mammalian target of rapamycin(mTOR)signaling pathway and the Argyrophilic Nucleolar Regulatory Region(AgNOR),using the Microcomputed Tomography(Micro CT).Ehrlich ascites carcinoma(EAC)cells were administered into the mice by subcutaneous *** with solid tumors were injected intraperitoneally with 50 and 100 mg/kg melatonin for 14 *** measurements for the taken tumors were made with micro-CT imaging,immunohistochemistry(IHC),real-time polymerase chain reaction(PCR)and ***,the tumor tissue volume in the Tumor+100 mg/kg melatonin group was significantly lower than that in the other groups in the data obtained from micro-CT *** the IHC analysis,the groups treated with Tumor+100 mg/kg melatonin were compared when the mTOR signaling pathway and factor 8(F8)expression were compared with the control *** was determined that there was a significant decrease(p<0.05).Significant differences were found in the total AgNOR area/nuclear area(TAA/NA)ratio in the treatment groups(p<0.05).Furthermore,there were significant differences between the amount of mTOR mRNA for the phosphatidylinositol 3-kinase(PI3K),AKT Serine/Threonine Kinase(PKB/AKT)genes(p<0.05).Cell apoptosis was evaluated with Annexin V in an in vitro study with different doses of melatonin;It was observed that 100µg/mL melatonin dose caused an increase in the apoptotic cell *** this study,we have reported anti-tumor effects of melatonin in cell culture studies as well as in mice *** characterization of the melatonin-mediated cancer inhibitory effects will be valuable in advanc

关键词： Signaling pathway Apoptosis Real-time PCR AgNOR

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非均相催化臭氧氧化处理工业废水的研究进展

无机盐工业 2024年第3期56卷 28-38页

作者：靳苏娜吕瑞亮驻马店职业技术学院河南驻马店463000 宝鸡市热力有限责任公司陕西宝鸡721006

介绍了金属氧化物类负载型催化剂在非均相催化臭氧氧化技术降解废水有机污染物的反应机理和研究现状,并对反应过程中的参数和影响因素进行归纳总结,得出金属氧化物类催化剂往往通过添加其他金属或氧化物协同处理有机废水。Fe及其氧化物... 详细信息

介绍了金属氧化物类负载型催化剂在非均相催化臭氧氧化技术降解废水有机污染物的反应机理和研究现状,并对反应过程中的参数和影响因素进行归纳总结,得出金属氧化物类催化剂往往通过添加其他金属或氧化物协同处理有机废水。Fe及其氧化物有利于催化剂的回收和循环利用,Ce及其氧化物可提供丰富的酸碱点位,Mn及其氧化物可提供多变的晶体结构,Cu及其氧化物可提供活性反应中心。针对现有催化剂使用寿命不佳、活性组分易溶出、环境经济性不理想等问题,指出未来应加快、加深催化臭氧氧化反应机理的研究,同时在优化反应参数的基础上,针对部分重点行业,建立可复制、易于操作的处理模型并推广应用。

关键词：臭氧催化剂有机污染物活性物质

The Triple Combination of Meropenem,Avibactam,and a Metallo-b-Lactamase Inhibitor Optimizes Antibacterial Coverage Against Different b-Lactamase Producers

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Engineering 2024年第7期38卷 124-132页

作者： Zhuoren Ling Alistair James Macdonald Farley Aditya Lankapalli Yanfang Zhang Shonnette Premchand-Branker Kate Cook Andrei Baran Charlotte Gray-Hammerton Claudia Orbegozo Rubio Edgars suna Jordan Mathias Jürgen Brem Kirsty Sands Maria Nieto-Rosado Maria Mykolaivna Trush Nadira Naznin Rakhi Willames Martins Yuqing Zhou Christopher Joseph Schofield Timothy Walsh Department of Biology&Ineos Oxford Institute for Antimicrobial Research University of OxfordOxford OX13REUK Chemistry Research Laboratory Department of Chemistry and the Ineos Oxford Institute for Antimicrobial ResearchUniversity of OxfordOxford OX13TAUK Latvian Institute of Organic Synthesis Riga LV-1006Latvia Department of Medical Microbiology Division of Infection and ImmunitySchool of MedicineCardiff UniversityCardiff CF144XNUK Enzymology and Applied Biocatalysis Research Center Faculty of Chemistry and Chemical EngineeringBabes-Bolyai UniversityCluj-Napoca 400028Romania

This work explores the potential of a triple combination of meropenem(MEM),a novel metallo-blactamase(MBL)inhibitor(indole-2-carboxylate 58(InC58)),and a serine-b-lactamase(SBL)inhibitor(avibactam(AVI))for broad-spectrum activity against carbapenemase-producing bacteria.A diverse panel comprising MBL-and SBL-producing strains was used for susceptibility testing of the triple combination using the agar dilution *** frequency of resistance(FoR)to MEM combined with InC58 was *** were sequenced and tested for cross resistance,fitness,and the stability of the resistance *** with the double combinations of MEM plus an SBL or MBL inhibitor,the triple combination extended the spectrum of activity to most of the isolates bearing SBLs(oxacillinase-48(OXA-48)and Klebsiella pneumoniae carbapenemase-2(KPC-2))and MBLs(New Delhi metallo-blactamases(NDMs)),although it was not effective against Verona integron-encoded metallo-blactamase(VIM)-carrying Pseudomonas aeruginosa(***)and OXA-23-carrying Acinetobacter baumannii(***).The FoR to MEM plus InC58 ranged from 2.22×10^(-7)to 1.13×10^(-6).The resistance correlated with mutations to ompC and comR,affecting porin C and copper permeability,*** mutants manifested a fitness cost,a decreased level of resistance during passage without antibiotic pressure,and cross resistance to another carbapenem(imipenem)and a b-lactamase inhibitor(taniborbactam).In conclusion,compared with the dual combinations,the triple combination of MEM with InC58 and AVI showed a much wider spectrum of activity against different carbapenemaseproducing bacteria,revealing a new strategy to combat b-lactamase-mediated antimicrobial resistance.

关键词： Carbapenemase Metallo/serine-b-lactamase inhibitor Avibactam Meropenem Antimicrobial resistance

网络空间中公共场所的刑法意涵——兼论网络直播性侵案件加重情节的适用

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河南理工大学学报（社会科学版） 2024年第2期25卷 7-14页

作者：查苏娜中国人民大学法学院北京100872

传统刑法理论认为,公共场所是指公众的身体可以自由出入的场所,即应当具有现实性或者物理性。但在当前传统犯罪网络异化的背景下,网络空间中的行为同样可以造成实际损害,网络空间秩序亦被包含在了公共秩序中,身体自由进入说的判断标准... 详细信息

传统刑法理论认为,公共场所是指公众的身体可以自由出入的场所,即应当具有现实性或者物理性。但在当前传统犯罪网络异化的背景下,网络空间中的行为同样可以造成实际损害,网络空间秩序亦被包含在了公共秩序中,身体自由进入说的判断标准早已不合时宜。宏观来看,“网络空间”与“公共场所”并非刑法上的专有名词,互联网的迭代升级也不只触及法律领域,因此有必要借助社会学、传播学的视野来帮助我们厘清公共场所的本质属性。同时以性侵案件作为样本分析可知,网络直播性侵行为具有加重处罚的必要性,实践中强奸、猥亵他人并直播的情形,应当认定行为人是在“公共场所当众”实施,从而适用该加重情节。

关键词：网络空间公共场所社会学传播学性侵犯罪

聚苯胺与氧化钨二水合物双波段电致变色复合薄膜制备及性能

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东华大学学报（自然科学版） 2024年第4期50卷 98-104页

作者：谢鸿杰范苏娜张耀鹏东华大学材料科学与工程学院纤维材料改性国家重点实验室上海

聚苯胺(PANI)是一种导电性能优越的高分子材料,被广泛应用于电致变色或超级电容器等领域。在可见光波段(400~780nm),它表现出优异的电致变色效果,但对于近红外波段(波长大于780nm)的调控能力有限,控温能力仍有待提高。为提升PANI在近红... 详细信息

聚苯胺(PANI)是一种导电性能优越的高分子材料,被广泛应用于电致变色或超级电容器等领域。在可见光波段(400~780nm),它表现出优异的电致变色效果,但对于近红外波段(波长大于780nm)的调控能力有限,控温能力仍有待提高。为提升PANI在近红外波段的调控能力,将氧化钨二水合物(WO_(3)·2H_(2)O)阴极变色材料与PANI复合。采用旋涂法制备WO_(3)·2H_(2)O@PANI复合薄膜,并对其进行表面形貌分析与电致变色研究。结果表明WO_(3)·2H_(2)O@PANI复合薄膜在近红外波段的电致变色性能得到显著提升,并且与ITO玻璃表面结合力更佳。因此,该复合薄膜的电化学稳定性和光学稳定性均有较大提升。

关键词：双波段电致变色聚苯胺氧化钨二水合物电化学稳定性

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母体循环中胎儿游离DNA在单基因病产前诊断的研究进展

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医学综述 2024年第18期30卷 2288-2292,2299页

作者：何素娜周俏苗海南医科大学第一临床学院海口571199 海南省妇女儿童医学中心遗传及产前诊断科海口570100

单基因病是引起胎儿出生缺陷的主要原因之一,其种类多,病情复杂,缺乏有效治疗方法,且预后差。目前,无创产前检测(NIPT)已成为筛查胎儿非整倍体的主要手段,在临床上广泛应用。基于母体循环中胎儿游离DNA(cffDNA)的发现及高通量测序技术... 详细信息

单基因病是引起胎儿出生缺陷的主要原因之一,其种类多,病情复杂,缺乏有效治疗方法,且预后差。目前,无创产前检测(NIPT)已成为筛查胎儿非整倍体的主要手段,在临床上广泛应用。基于母体循环中胎儿游离DNA(cffDNA)的发现及高通量测序技术的发展,单基因病的NIPT成为研究热点,且检测技术及其检测的疾病种类也在不断增加,但是单基因病的检测存在难度大、成本高等问题。目前胎儿单基因病的NIPT仍然处于研究阶段,尚未在临床应用。因此,深入研究母体循环中cffDNA的NIPT对单基因病产前诊断具有重要意义。

关键词：单基因病胎儿游离DNA 无创产前检测产前诊断