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High reproducibility and sensitivity of bifacial copper nanowire array for detection of glucose

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Progress in Natural Science:Materials International 2017年第3期27卷 311-315页

作者： Hanqing zhang Yining Wang Xuesen Gao zhuo Gao yan Chen Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan University

The ordered bifacial copper nanowire array(Cu BNWA) was synthesized by a template assisted electrochemical deposition *** morphology and structure of the as-prepared samples were investigated by field emission scanning electron microscope(FESEM) and X-ray diffraction(XRD).The results show that the ordered Cu nanowire array with uniform geometrical dimensions covered both side of the Cu *** used as the electrode for glucose detection,the minimum detectable concentration of glucose can be reached as low as 0.2 ***,the sample still showed high sensitivity and stability for glucose detection after two months placement in ambient *** excellent performances of the Cu BNWA make it a promising non-enzyme glucose detection sensor for various applications.

关键词： Cu/Copper BNWA Glucose sensor Stability Reproducibility

Research on mode localization of reticulated shell structures

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Earthquake Engineering and Engineering Vibration 2011年第1期10卷 75-84页

作者： yan Weiming Wang zhuo He Haoxiang Beijing Laboratory of Earthquake Engineering and Structural Retrofit Beijing University of Technology Beijing 100124 China The Open University of China Beijing 100031 China

Reticulated shell structures （RSSs） are characterized as cyclically periodic structures. Mistuning of RSSs will induce structural mode localization. Mode localization has the following two features： some modal vectors of the structure change remarkably when the values of its physical parameters （mass or stiffness） have a slight change; and the vibration of some modes is mainly restricted in some local areas of the structure. In this paper, two quantitative assessment indexes are introduced that correspond to these two features. The first feature is studied through a numerical example of a RSS, and its induced causes are analyzed by using the perturbation theory. The analysis showed that internally, mode localization is closely related to structural frequencies and externally, slight changes of the physical parameters of the structure cause instability to the RSS. A scaled model experiment to examine mode localization was carried out on a Kiewit single-layer spherical RSS, and both features of mode localization are studied. Eight tests that measured the changes of the physical parameters were carried out in the experiment. Since many modes make their contribution in structural dynamic response, six strong vibration modes were tested at random in the experimental analysis. The change and localization of the six modes are analyzed for each test. The results show that slight changes to the physical parameters are likely to induce remarkable changes and localization of some modal vectors in the RSSs.

关键词： reticulated shell structure mistuning mode localization perturbation theory seismic performance analysis damage identification

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Microwave-assisted synthesis of ultrafine Au nanoparticles immobilized on MOF-199 in high loading as efficient catalysts for a three-component coupling reaction

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Nano Research 2017年第3期10卷 876-889页

作者： yan Jiang Xin zhang Xiaoping Dai Wen zhang Qiang Sheng Hongying zhuo Yun Xiao Hai Wang State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China National Institute of Metrology Beijing 100013 China

Controlled integration of ultrafine metal nanoparticles （MNPs） and metal- organic frameworks （MOFs） has drawn much attention due to their unique physical and chemical properties. However, the development of a one-step strategy for preparing ultrafine MNPs within MOFs still remains a great challenge. Herein, a facile synthetic approach toward the abovementioned composites was developed. In contrast to the conventional approach, these hybrids were prepared by the direct mixing of metal and MOF precursors in the reaction solution assisted by microwave irradiation. Impressively, the Au/MOF-199 composite with uniformly distributed ultrafine Au nanoparticles could be fabricated in only two minutes, and the Au loading could be increased up to a level of 5.13%. The multifunctional Au/MOF-199 catalysts exhibited high turnover numbers （TONs） and turnover frequencies （TOFs） in the three-component coupling reaction of formaldehyde, phenylacetylene, and piperidine （AB-coupling）. Owing to the confinement effect of MOF-199, the 5.13%Au/MOF-199 catalyst could be recycled for five runs without serious loss of activity, with no obvious aggregation of Au NPs detected.

关键词： MOF-199 ultrafine Au nanoparticles(NPs) high loading microwave irradiation AS-coupling

Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu Liang Ni-Hui zhang Zhi-Lai Zhan Guang-Lu Chang yan Gao Xia Li Wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

Berry-Esseen bounds for self-normalized sums of locally dependent random variables

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Science China Mathematics 2024年第11期67卷 2629-2652页

作者： zhuo-Song zhang Department of Statistics and Data Science Southern University of Science and TechnologyShenzhen 518055China

The Berry-Esseen bound provides an upper bound on the Kolmogorov distance between a random variable and the normal *** this paper,we establish Berry-Esseen bounds with optimal rates for self-normalized sums of locally dependent random variables,assuming only a second-moment *** proof leverages Stein's method and introduces a novel randomized concentration inequality,which may also be of independent interest for other *** main results have applied to self-normalized sums of m-dependent random variables and graph dependency models.

关键词： Berry-Esseen bounds self-normalized sums local dependence m-dependence graph dependency

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Fuzzy Support Vector Machine Based on Color Modeling for Facial Complexion Recognition in Traditional Chinese Medicine

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Chinese Journal of Electronics 2016年第3期25卷 474-480页

作者： zhang Jing zhang Pei zhuo Li Signal and Information Processing Laboratory Beijing University of Technology

Face diagnosis is one of the four diagnostic methods in Traditional chinese medicine(TCM). The morbidity of the organs can be revealed from the facial complexion. Due to the ambiguity of face diagnosis in TCM,Fuzzy support vector machine(FSVM) is utilized to remove the influence of outliers. The facial complexion recognition in TCM based on FSVM is proposed in this paper,which includes the following steps: 1) The facial cheek region are segmented as skin blocks; 2) The color feature in Lab color space is extracted from skin block to represent facial complexion characteristic; 3) The fuzzy membership is calculated to obtain the membership of the training samples, in which the final membership of training samples is determined by combining membership calculation based on distance with the facial complexion recognition based on color modeling; 4) The FSVM is built to classify facial complexion characteristic. Experimental results show that proposed facial complexion recognition has better antiinterference performance as well as a higher recognition rate up to 82%.

关键词： Traditional chinese medicine(TCM) Facial complexion recognition Fuzzy support vector machine(FSVM) Color modeling Fuzzy membership

FSD1 inhibits glioblastoma diffuse infiltration through restriction of HDAC6-mediated microtubule deacetylation

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Science China Life Sciences 2025年

作者： Dake Xiao Haowen Ran Lishu Chen Yuanyuan Li yan Cai Songyang zhang Qinghui Qi Huiran Wu Cheng zhang Shuailiang Cao Lanjuan Mi Haohao Huang Ji Qi Qiuying Han Haiqing Tu Huiyan Li Tao Zhou Fangye Li Ailing Li Jianghong Man Nanhu Laboratory National Center of Biomedical Analysis School of Traditional Chinese Medicine Capital Medical University Department of Neurosurgery General Hospital of Central Theater Command of Chinese PLA School of Life and Health Sciences Huzhou College Department of Neurosurgery Beijing Fengtai Hospital Department of Neurosurgery First Medical Center of PLA General Hospital

The infiltration of glioblastoma multiforme(GBM) is predominantly characterized by diffuse spread, contributing significantly to therapy resistance and recurrence of GBM. In this study, we reveal that microtubule deacetylation, mediated through the downregulation of fibronectin type III and SPRY domain-containing 1(FSD1), plays a pivotal role in promoting GBM diffuse infiltration. FSD1 directly interacts with histone deacetylase 6(HDAC6) at its second catalytic domain, thereby impeding its deacetylase activity on α-tubulin and preventing microtubule deacetylation and depolymerization. This inhibitory interaction is disrupted upon phosphorylation of FSD1 at its Ser317 and Ser324 residues by activated CDK5, leading to FSD1 dissociation from microtubules and facilitating HDAC6-mediated α-tubulin deacetylation. Furthermore, increased expression of FSD1 or interference with FSD1 phosphorylation reduces microtubule deacetylation, suppresses invasion of GBM stem cells, and ultimately mitigates tumor infiltration in orthotopic GBM xenografts. Importantly, GBM tissues exhibit diminished levels of FSD1 expression, correlating with microtubule deacetylation and unfavorable clinical outcomes in GBM patients. These findings elucidate the mechanistic involvement of microtubule deacetylation in driving GBM cell invasion and offer potential avenues for managing GBM infiltration.

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装配式建筑梁柱节点疲劳损伤检测方法研究

山东理工大学学报（自然科学版） 2025年第1期39卷 35-40页

作者：张延滁州职业技术学院建筑工程学院安徽滁州239000

常规的装配式建筑梁柱节点疲劳损伤检测主要采用梁柱图像分析实现,忽略了节点内部损伤的影响,导致检测结果相对变化量系数与实际系数的差值较大。本文对装配式建筑梁柱节点疲劳损伤检测方法进行了研究,于装配式建筑梁柱周围布置测点对... 详细信息

常规的装配式建筑梁柱节点疲劳损伤检测主要采用梁柱图像分析实现,忽略了节点内部损伤的影响,导致检测结果相对变化量系数与实际系数的差值较大。本文对装配式建筑梁柱节点疲劳损伤检测方法进行了研究,于装配式建筑梁柱周围布置测点对梁柱节点的应变状态进行分析;根据分析结果,结合梁柱内部能量耗散值,计算节点疲劳损伤能量系数;将该系数作为节点应变能密度因子分析节点轴向力,由此得出检测的梁柱节点疲劳损伤值。实验结果表明,所提方法应用后梁柱节点疲劳损伤检测结果表现出的相对变化量系数差值较小,检测结果准确率较高,满足了装配式建筑梁柱安全运维工作的现实需求。

关键词：梁柱节点装配式建筑疲劳损伤检测梁柱损伤检测方法

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Gram-scale synthesis of all-inorganic perovskite quantum dots with high Mn substitution ratio and enhanced dual-color emission

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Nano Research 2019年第7期12卷 1733-1738页

作者： Lvming Dong zhuo Chen Lei Ye yan Yu Jianbing zhang Huan Liu Jianfeng Zang School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Innovation Institute Huazhong University of Science and TechnologyWuhan 430074China

Mn-doped all-inorganic perovskite quantum dots (QDs) provide prominent applications in the fields of low-cost light source or display,because of their remarkable properties including dual-color emission and reduced lead content,as well as high photoluminescence quantum yields (PLQYs) and high ***,the existing synthesis approaches usually require hash conditions,such as high temperature and nitrogen protection,which is a major hurdler for the practical *** addition,the significantly high Mn substitution ratio in CsPbX3 QDs is still *** real dual-color emission with two strong emission peaks in the Mn-doped all-inorganic perovskite QDs has attracted great *** we present a gram-scale approach to synthesize both CsPbxMn1-xCI3 and CsPb1-xMnxClyBr3-y QDs at 100 ℃ in the air with high Mn substitution ratio,up to 55.64% *** as-prepared CsPb1-xMnxClyBr3-y QDs exhibit high PLQYs of 62.41% and dual-color emission with two strong emission peaks around at 400-450 nm and 600 nm,*** enhanced peak at 400-450 nm is a result of the hybrid halides in CsPbBrxCl3-x ***,the unique advantage of the optical emission and high PLQYs properties of the CsPbxMn1-xCl3 QDs has been demonstrated as invisible ink for encryption applications and polymer *** gram-scale synthesis approach for Mn-doped all-inorganic perovskite QDs may boost the future research and practical applications of QDs-based white LED,spintronics,and molecular barcoding.

关键词： gram-scale enhanced dual-color emission all-inorganic perovskite quantum dots invisible ink polymer composites