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锰(Mn)钴(Co)双金属负载石墨相氮化碳活化过硫酸盐用于非自由基主导的高级氧化(AOP)降解污染物研究

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现代化工 2024年第7期44卷 180-185页

作者：庄立恒毛辉麾范郑洋王桂灵葛吕洁桂豪冠常州大学石油化工学院江苏常州213164

采用两步煅烧法成功制备了钴锰双金属氧化物负载的石墨相氮化碳(CMCN)。锰氧化物主要以Mn3O4和MnCO3形式存在,钴氧化物以CoO形式存在。由于g-C_(3)N_(4)的存在,金属Mn和Co都分布均匀没有出现团聚现象。XPS表征结果表明,Co和Mn都具有2个... 详细信息

采用两步煅烧法成功制备了钴锰双金属氧化物负载的石墨相氮化碳(CMCN)。锰氧化物主要以Mn3O4和MnCO3形式存在,钴氧化物以CoO形式存在。由于g-C_(3)N_(4)的存在,金属Mn和Co都分布均匀没有出现团聚现象。XPS表征结果表明,Co和Mn都具有2个价态存在于CMCN中,并且保持了g-C_(3)N_(4)的结构单元。通过对罗丹明B降解评估催化剂CMCN的催化降解性能。结果表明,在Mn和Co的协同作用下,罗丹明B降解率在1 min可达到99%以上。电子顺磁共振和淬灭试验表明,非自由基氧化(1O2)在罗丹明B降解过程中占主导地位。

关键词：双金属氧化物石墨相氮化碳过氧单硫酸盐协同作用非自由基

Gene transfection mediated by polyethyleneiminepolyethylene glycol nanocarrier prevents cisplatininduced spiral ganglion cell damage

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Neural Regeneration Research 2015年第3期10卷 425-431页

作者： guan-gui Chen Min Mao Li-zi Qiu Qi-ming Liu Department of Otorhinolaryngology the Second Affiliated Hospital of Guangzhou Medical University

Polyethyleneimine-polyethylene glycol （PEI-PEG）, a novel nanocarrier, has been used for trans- fection and gene therapy in a variety of cells. In our previous study, we successfully carried out PEI-PEG-mediated gene transfer in spiral ganglion cells. It remains unclear whether PEI-PEG could be used for gene therapy with X-linked inhibitor of apoptosis protein （XIAP） in the inner ear. In the present study, we performed PEI-PEG-mediated XIAP gene transfection in the cochlea of Sprague-Dawley rats, via scala tympani fenestration, before daily cisplatin injections. Audito- ry brainstem reflex tests demonstrated the protective effects of XIAP gene therapy on auditory function. Immunohistochemical staining revealed XIAP protein expression in the cytoplasm of cells in the spiral ganglion, the organ of Corti and the stria vascularis. Reverse transcription-PCR detected high levels of XIAP mRNA expression in the cochlea. The present findings suggest that PEI-PEG nanocarrier-mediated XIAP gene transfection results in XIAP expression in the cochlea, prevents damage to cochlear spiral ganglion cells, and protects hearing.

关键词： nerve regeneration polyethyleneimine-polyethylene glycol spiral ganglion cells X-linkedinhibitor of apoptosis protein gene therapy nanocarrier cisplatin neural regeneration ototoxicity cochlea

Large-scale real-world radio signal recognition with deep learning

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Chinese Journal of Aeronautics 2022年第9期35卷 35-48页

作者： Ya TU Yun LIN Haoran ZHA Ju ZHANG Yu WANG guan gui Shiwen MAO College of Information and Communication Engineering Harbin Engineering UniversityHarbin 150001China College of Electronic Science and Engineering National University of Defense TechnologyChangsha 410073China College of Telecommunications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China Department of Electrical and Computer Engineering Auburn UniversityAuburn 36849USA

In the past ten years, many high-quality datasets have been released to support the rapid development of deep learning in the fields of computer vision, voice, and natural language processing. Nowadays, deep learning has become a key research component of the Sixth-Generation wireless systems(6G) with numerous regulatory and defense applications. In order to facilitate the application of deep learning in radio signal recognition, in this work, a large-scale real-world radio signal dataset is created based on a special aeronautical monitoring system-Automatic Dependent Surveillance-Broadcast(ADS-B). This paper makes two main contributions. First, an automatic data collection and labeling system is designed to capture over-the-air ADS-B signals in the open and real-world scenario without human participation. Through data cleaning and sorting, a high-quality dataset of ADS-B signals is created for radio signal recognition. Second, we conduct an in-depth study on the performance of deep learning models using the new dataset, as well as comparison with a recognition benchmark using machine learning and deep learning ***, we conclude this paper with a discussion of open problems in this area.

关键词： Signal recognition Radio signal dataset Automatic Dependent Surveillance-Broadcast(ADS-B) Deep learning Recognition benchmark

The investigation of multiple factors on elastic anisotropy of artificial shale based on the orthogonal experiment

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Petroleum Science 2023年第5期20卷 2773-2783页

作者： Fei Gong Liang-Liang Gao guan-gui Zou Su-Ping Peng Yi-Chen Song College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing100083China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China

Elastic anisotropy of shales is critical to accurate constraints for rock physical models,quantitative interpretation and hydraulic ***,the causes of elastic anisotropy of shales are very complicated,and the understanding of how multiple influence factors affect the elastic anisotropy of shales is still not ***,the orthogonal experiment,as an effective multiple factors experimental method,is adopted in this study to analyze the effect of multiple factors for shale elastic *** factors,clay content,organic matter(OM)content and compaction stress are selected as independent variables,the orthogonal test table L_(16)(4^(3))with four levels for each factor is *** to the designed orthogonal table,sixteen artificial shales are constructed based on the cold-pressing method,and all the dry artificial shales are measured by the ultrasonic *** influence of each factor on the elastic anisotropy and the sensitivity orders of three factors are obtained using the range *** orders of sensitivity for selected factors follow the sequence clay content>compaction stress>OM content for velocity anisotropy *** compaction mechanism of artificial shales is also discussed by the compaction factor,which are positively correlated with the velocity anisotropy *** clay platelets orientation distribution function(ODF)of samples is evaluated by a theoretical model,the ODF coefficients are significantly affected by the clay content and compaction stress,and W200 are much more sensitive to these factors than *** results can provide a critical rock physics basis for quantitative interpretation and reservoir prediction of the low-maturity or maturity shale reservoir.

关键词： Shale Elastic anisotropy Multiple factors Orthogonal design

Symbol Error Rate Performance Analysis of Non-Orthogonal Multiple Access for Visible Light Communications

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China Communications 2017年第12期14卷 153-161页

作者： Hongji Huang Jinyuan Wang Jie Wang Jie Yang Jian Xiong guan gui College of Telecommunication and Information Engineering Nanjing University of Posts and Telecommunications Nanjing China

Non-orthogonal multiple access(NOMA) is considered as one of promising radio access techniques for visible light communications(VLC) in next-generation wireless communications *** order to provide theoretical support for designing VLC-NOMA,we derive its analytic expressions for the symbol error rate(SER).Specifically,NOMA is first incorporated with appropriate VLC to establish a VLC-NOMA ***,mathematical expressions of the SER for the VLC-NOMA are ***,numerical results are provided carefully to demonstrate that the proposed VLC-NOMA scheme outperforms than state-of-the-art orthogonal frequency division multiple access(OFDMA) one in terms of SER ***,relationships between the SER performance and the number of users,power allocation coefficient and semi-angle are well investigated,which can give us a scientific guide to devise the VLC-NOMA system for achieving better SER performance.

关键词： visible light communication(VLC) non-orthogonal multiple access(NOMA) symbol error rate (SER)

CNN-Based Intelligent Safety Surveillance in Green IoT Applications

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China Communications 2021年第1期18卷 108-119页

作者： Wengang Cao Jianing Zhang Changxin Cai Quan Chen Yu Zhao Yimo Lou Wei Jiang guan gui College of Telecommunications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing 210003China School of Electronic and Information Yangtze UniversityJingzhou 434023China

Safety surveillance is considered one of the most important factors in many constructing industries for green internet of things(IoT)***,traditional safety monitoring methods require a lot of labor *** this paper,we propose intelligent safety surveillance(ISS)method using a convolutional neural network(CNN),which is an autosupervised method to detect workers whether or not wearing ***,to train the CNN-based ISS model,the labeled datasets mainly come from two aspects:1)our labeled datasets with the full labeled on both helmet and pedestrian;2)public labeled datasets with the parts labeled either on the helmet or *** fully take advantage of all datasets,we redesign CNN structure of network and loss functions based on ***,we test our proposed ISS method based on the specific detection evaluation ***,experimental results are given to show that our proposed ISS method enables the model to fully learn the labeled information from all *** the threshold of intersection over union(IoU)between the predicted box and ground truth is set to 0.5,the average precision of pedestrians and helmets can reach 0.864 and 0.891,respectively.

关键词： convolutional neural network(CNN) internet of things(IoT) intelligent safety surveillance deep learning auto-supervised method

子宫内膜癌组织miR-155、miR-202表达与增殖侵袭基因表达、临床病理参数和预后的关系

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现代生物医学进展 2024年第15期24卷 2989-2994页

作者：侍繁高原管桂雪张林娜冯文徐州医科大学附属连云港医院妇科江苏连云港222000

目的:探讨子宫内膜癌(EC)组织中微小核糖核酸-155(miR-155)、微小核糖核酸-202(miR-202)表达情况与增殖侵袭基因表达、临床病理参数和预后的关系。方法:选择2015年10月至2018年10月在本院进行手术治疗的EC患者135例为观察组,另选择同期... 详细信息

目的:探讨子宫内膜癌(EC)组织中微小核糖核酸-155(miR-155)、微小核糖核酸-202(miR-202)表达情况与增殖侵袭基因表达、临床病理参数和预后的关系。方法:选择2015年10月至2018年10月在本院进行手术治疗的EC患者135例为观察组,另选择同期因子宫肌瘤行全子宫切除术的患者135例为对照组,采用实时荧光定量聚合酶链式反应(RT-qPCR)检测并比较两组miR-155、miR-202及增殖基因(Cdk4、Cdk6、Efemp2、DJ-1、RRM2)、侵袭基因(Dkk1、Ezh2、HMGB1)表达情况,分析EC组织miR-155、miR-202表达与患者临床病理参数的关系。采用Kaplan-Meier生存曲线分析miR-155、miR-202高表达组与低表达组的5年累积生存率。结果:观察组miR-155、Ezh2、HMGB1、Cdk4、Cdk6、DJ-1、RRM2相对表达量高于对照组,miR-202、Dkk1、Efemp2相对表达量低于对照组(P<0.05)。miR-155的相对表达量与Cdk4、Cdk6、DJ-1、RRM2、Ezh2、HMGB1呈正相关,与Efemp2、Dkk1呈负相关(P<0.05);miR-202相对表达量与Efemp2、Dkk1呈正相关,与Cdk4、Cdk6、DJ-1、RRM2、Ezh2、HMGB1呈负相关(P<0.05)。EC患者肿瘤FIGO分期越高、分化程度越低、肌层浸润越深及有淋巴结转移患者miR-155的相对表达量越高,miR-202的相对表达量越低(P<0.05)。高miR-155组5年总生存率为68.66%,低于低miR-155组的87.50%(P<0.05);高miR-202组5年生存率为91.80%,高于低miR-202组的65.71%(P<0.05)。结论:EC组织中miR-155表达升高,miR-202表达降低,与增殖侵袭基因表达、FIGO分期、分化程度、肌层浸润深度及有淋巴结转移有明显的相关性,miR-155表达越高、miR-202表达越低,患者预后越差。

关键词：子宫内膜癌 miR-155 miR-202 增殖基因侵袭基因临床病理参数预后

STRUCTURE OF THERMOTROPIC LIQUID CRYSTALLINE VANILLIC ACID/P-HYDROXYBENZOIC ACID/ETHYLENE TEREPHTHALATE VHE TERPOLYESTERS

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Chinese Chemical Letters 1992年第3期3卷 207-210页

作者： Xin gui LI Mei Rong HUANG gui He guan Tong SUN Institute of Membrane Separation Engineering Tianjin Institute of Textile Science and TechnologyTianjin300160 Department of Chemical Fiber Technology Chi na Textile UniversityShanghai200051

Thermotropic liquid crystalline VHE terpolyesters made from vanillic acid (V),p-hydroxybenzoic acid (H) and poly(ethylene terephthalate) (E) were studied by 400 MHz NMR spectra, wide angle X-ray diffraction,scanning electron and polarizing *** was found that the VHE terpolyesters had random sequence *** VHE terpolyester films exhibited highly oriented fibrillar structure.

关键词： ACID STRUCTURE OF THERMOTROPIC LIQUID CRYSTALLINE VANILLIC ACID/P-HYDROXYBENZOIC ACID/ETHYLENE TEREPHTHALATE VHE TERPOLYESTERS OC MHz

关于Pell方程组x^(2)-(m^(2)-1)y^(2)=z^(2)-(n^(2)-1)y^(2)=1

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数学学报（中文版） 2023年第1期66卷 133-142页

作者：管训贵泰州学院数理学院泰州225300

设m,n,L为正整数,本文证明了:如果m(123789L√L^((1/(1-ε)),或j>10.25×10^(12)log^(4)(2(L+1)(123789L√L^((1/(1-ε)),Pell方程组x^(2)-(m^(2)-1)y^(2)=z^(2)-(n^(2)-1)y^(2)=1的正整数解满足1≤k≤δL^(2),这里δ∈[1/2123789L√L^((1/(1-ε)),1],以及y-(m+√m^(2)-1)^(j)-(m-√m^(2)-1)^(j)/2√m^(2)-1=(n+√n^(2)-1)^(k)-(n-√n^(2)-1)^(k)/2√n^(2)-1且j=k=1或k+2≤j3/(1-ε),并改进了文[***.,2015,143(11):4685-4693]的结果.

关键词： Pell方程基本解 Baker方法