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Chinese Journal of Chemistry 2021年第7期39卷 1953-1957页

作者： cong-cong shu Lei Qiao Alvaro Muñoz-Castro Zhong-Ming Sun Tianjin Key Lab for Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic ChemistrySchool of Materials Science and EngineeringNankai UniversityTianjin300350 China Grupo de Química Inorgánicay Materiales Moleculares Facultad de IngenieriaUniversidad Autonoma de ChileEl Llano SubercaseauxSantiago2801 Chile

Main observation and conclusion Two ternary clusters,[As_(3)Nb(As_(3)Pb_(3))]^(3−)1 and[As_(3)Ta(As_(3)Pb_(3))]^(3−)2,were directly extracted from“K_(8)NbPbAs_(5)”and“K_(8)TaPbAs_(5)”intermetallic solid in the presence of ethylenediamine and 2.2.2-crypt,*** 1 and 2,comprising an electron-poor early transition metal-atom Nb or Ta coordinated to a As3 triangle and a bowl-like As_(3)Pb_(3).

关键词： Cluster compounds Aromaticity Zintl anions DFT calculation Sandwich structure

Attention Eraser and Quantitative Measures for Automated Bone Age Assessment

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Computers, Materials & Continua 2025年第1期82卷 627-644页

作者： Liuqiang shu Lei Yu College of Computer and Information Science Chongqing Normal UniversityChongqing401331China

Bone age assessment(BAA)aims to determine whether a child’s growth and development are normal concerning their chronological *** predict bone age more accurately based on radiographs,and for the left-hand X-ray images of different races model can have better adaptability,we propose a neural network in parallel with the quantitative features from the left-hand bone measurements for *** this study,a lightweight feature extractor(LFE)is designed to obtain the featuremaps fromradiographs,and amodule called attention erasermodule(AEM)is proposed to capture the fine-grained ***,the dimensional information of the metacarpal parts in the radiographs is measured to enhance the model’s generalization capability across images fromdifferent *** is trained and validated on the RSNA,RHPE,and digital hand atlas datasets,which include images from various racial *** model achieves a mean absolute error(MAE)of 4.42 months on the RSNA dataset and 15.98 months on the RHPE *** to ResNet50,InceptionV3,and several state-of-the-art methods,our proposed method shows statistically significant improvements(p<0.05),with a reduction in MAE by 0.2±0.02 years across different racial ***,t-tests on the features also confirm the statistical significance of our approach(p<0.05).

关键词： Bone age assessment attention eraser quantitative feature metacarpal bones

Internal Conversion Process of Chlorophyll a in Solvents in Femtosecond Pump-Probe Laser Fields

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Chinese Journal of Chemical Physics 2008年第3期21卷 211-216页

作者： Kai Niu Li-qing Dong shu-lin cong Department of Physics Dalian University of Technology Dalian 116024 China

The internal conversion （IC） processes of chlorophyll a （chl-a） in solvents are studied based on the reduced density matrix theory. The IC times can be obtained by simulating the experimental fluorescence depletion spectra （FDS）. The calculated IC times of chl-a in ethyl acetate, tetrahydrofuran and dimethyl formamide are 141, 147, and 241 fs, respectively. The oscillation feature of the FDS results from the forward and backward transfer of the population between coupled electronic states. The effects of diabatic coupling between two electronic states on the IC time and the FDS are described. The influence of molecule-reservoir coupling on the IC time is also investigated.

关键词： Fluorescence depletion spectrum Internal conversion Reduced density matrix

Hierarchical Porous Carbon Counter Electrode for Dye-Sensitized Solar Cells

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Chinese Physics Letters 2011年第3期28卷 224-227页

作者： WANG Gui-Qiang HUANG cong-cong XING Wei ZHUO shu-Ping College of Chemical Engineering Shandong University of TechnologyZibo 255049

Hierarchical porous carbon is prepared by a combination of self-organization and chemical activation and explored as counter electrode for dye-sensitized solar *** structure analysis shows that micropores generated within the mesopore wall and the pristine mesopore structure of mesoporous carbon are preserved during KOH *** impedance spectroscopy studies demonstrate a relatively high electrocatalytic activity of hierarchical porous carbon electrode for triiodide reduction,as compared with a pristine mesoporous carbon *** enhanced electrocatalytic activity is beneficial for improving the photovoltaic performance of dyesensitized solar *** overall conversion efficiency of dye-sensitized solar cells with the hierarchical porous carbon electrode increased by 11.5%compared with that of the cell with a pristine mesoporous carbon electrode.

关键词： electrode Solar dye

Ablation-resistant Ir/Re coating on C/C composites at ultra-high temperatures

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Rare Metals 2022年第1期41卷 199-208页

作者： Hong Zhang Li-An Zhu shu-Xin Bai Yi-cong Ye Department of Materials Science and Engineering College of Aerospace Science and EngineeringNational University of Defense TechnologyChangsha 410073China

An iridium/rhenium(Ir/Re)double-layer coating was prepared on carbon/carbon(C/C)composites by chemical vapor deposition(CVD)and *** morphologies and bond strengths of the coatings on the C/C substrate were *** ablation resistance of the Ir/Re coating was studied at 1800℃in an oxyacetylene torch flame for 300 *** results show that Re interlayer increases the bond strength between Ir coating and C/C substrate by over 100%.During entire hightemperature ablation process,Ir/Re coating keeps intact without any signs of ablation *** coating gets smoother and the grain size becomes larger after ablation,with the preferred orientation changing from h311i to h220i:Although some voids are observed along the grain boundaries of the as-ablated Ir coating,Ir/Re coating keeps intact on C/C *** study indicates that Ir/Re coating can provide good ablation resistance up to 1800℃for C/C composites,especially for the continuous ablation applications.

关键词： Iridium Rhenium Carbon/carbon(C/C) Interlayer Ablation

Steroidal alkaloids ameliorate cell proliferation,oxidative stress,inflammation and histology outcome in vitro and in vivo

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Asian Pacific Journal of Tropical Medicine 2018年第3期11卷 260-264页

作者： Hou-cong Li shu Wang West China School of Pharmacy.Sichuan University Medical School of Hubei University for Nationalities Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases

Objective: To investigate the effects of steroidal alkaloids and sarcovagine D isolated from Sarcococca hookeriana var. digyna on cell-proliferation and secretion of inflammatory cytokines in TNF-a-induced human RA-FLS MH7 A in vitro, and against complete Freund's adjuvant(CFA)-induced arthritis rats in vivo. Methods: CCK-8 assay was utilized to evaluate the anti-proliferation activity in vitro. In in-vivo study, rats were randomly divided into control group, model group(CFA), steroidal alkaloids(STA) groups(5.0, 2.5 and 1.25 g/kg BW),and sarcovagine D(SD) groups(50, 100 and 200 mg/kg BW), 10 rats for each group. To evaluate the anti-inflammation effect, the histology, biochemical parameters and expression of inflammatory cytokines were detected. Results: Steroidal alkaloids and sarcovagine D showed strong anti-proliferative activity during MH7 A cell culture proliferation and downregulated NO levels, and inflammatory cytokines(IL-1β, IL-6 and PGE_2) in vitro. The rats treated with CFA induced ankle inflammation and lymphocyte infiltration, upregulated IL-1β, TNF-α,IL-6, PGE_2, MDA and NO levels, and downregulated IL-10 and SOD. On the contrary,steroidal alkaloids ameliorated all the changes induced by CFA in rats, suggesting the antiinflammatory effect of steroidal alkaloids and sarcovagine D. Conclusions: The results suggest that Sarcococca hookeriana var. digyna has anti-inflammatory effect. Steroidal alkaloids and sarcovagine D has the potential to cure RA.

关键词： Rheumatoid arthritis MH7A Sarcovagine D Steroidal alkaloids Inflammatory cytokines Oxidative stress

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多路径传输技术研究综述

软件学报 2025年第1期36卷 289-320页

作者：苏金树宋丛溪计晓岚徐草韩彪国防科技大学计算机学院军事科学院

多路径传输技术是指通过设备上的多个网络接口,在通信双方建立多条传输路径,实现带宽聚合、负载均衡、路径冗余,增加传输的吞吐量,提高可靠性.多路径传输技术凭借其上述优势,已被广泛应用于服务器、终端和数据中心等场景,是网络体系结... 详细信息

多路径传输技术是指通过设备上的多个网络接口,在通信双方建立多条传输路径,实现带宽聚合、负载均衡、路径冗余,增加传输的吞吐量,提高可靠性.多路径传输技术凭借其上述优势,已被广泛应用于服务器、终端和数据中心等场景,是网络体系结构和传输技术研究的重要组成,具有重要研究价值和意义.为此,从概念、核心机制等方面,系统梳理了多路径传输技术.首先概述了多路径传输的基本概念、标准化进程以及应用价值.其次,阐述多路径传输技术的核心机制,包括拥塞控制、报文调度、路径管理、重传机制、安全机制,以及面向特定应用的机制设计.对每种机制的分类方法、主要研究成果给予了总结和评述,分析总结了不同机制的优缺点与发展方向.最后,探讨了多路径传输技术研究面临的挑战,展望了未来研究方向.

关键词：多路径传输 QUIC 拥塞控制报文调度智能网络

Chloride anion-induced dimer capsule based on a polyfluorinated macrocycle meta-WreathArene

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Chinese Chemical Letters 2023年第7期34卷 137-140页

作者： shu Niu Hongyan Xiao Xiao-Di Yang Huan cong Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistrySchool of Future Technology.University of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100190China Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBejing 100190 China Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese MedicineShanghai University of Traditional Chinese MedicineShanghai 200438China

[1_n]metacyclophanes are a class of important building blocks for supramolecular assembly of artificial capsules. Herein we present the preparation and properties of a novel polyfluorinated macrocycle metaWreath Arene, a C_(2)-symmetrical [14]metacyclophane. Adopting a cone conformation in acetone solution,the macrocycle can form dimer capsules through hydrogen bonds induced by chloride anions. Each dimer capsule consists of two meta-Wreath Arene and two chloride anions, and has been unambiguously characterized both in solution and in solid state.

关键词： Macrocycle Metacyclophane Anion Assembly Capsule

MixerKT:A Knowledge Tracing Model Based on Pure MLP Architecture

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Computers, Materials & Continua 2025年第1期82卷 485-498页

作者： Jun Wang Mingjie Wang Zijie Li Ken Chen Jiatian Mei shu Zhang Key Laboratory of Education Informatization for Nationalities Ministry of EducationYunnan Normal UniversityKunming650000China Yunnan Key Laboratory of Smart Education Yunnan Normal UniversityKunming650000China

In the field of intelligent education,the integration of artificial intelligence,especially deep learning technologies,has garnered significant *** tracing(KT)plays a pivotal role in this field by predicting students’future performance through the analysis of historical interaction data,thereby assisting educators in evaluating knowledgemastery and tailoring instructional *** knowledge tracingmethods,largely based on Recurrent Neural Networks(RNNs)and Transformer models,primarily focus on capturing long-term interaction patterns in sequential ***,these models may neglect crucial short-term dynamics and other relevant *** paper introduces a novel approach to knowledge tracing by leveraging a pure Multilayer Perceptron(MLP)*** proposeMixerKT,a knowledge tracing model based on theHyperMixer framework,which uniquely integrates global and localMixer feature *** architecture enables more effective extraction of both long-terminteraction trends and recent learning behaviors,addressing limitations in currentmodels thatmay overlook these key *** evaluations on twowidely-used datasets,ASSIS Tments2009 and Algebra2005,demonstrate that MixerKT consistently outperforms several state-of-the-art models,including DKT,SAKT,and Separated Self-Attentive Neural Knowledge Tracing(SAINT).Specifically,MixerKT achieves higher prediction accuracy,highlighting its effectiveness in capturing the nuances of learners’knowledge *** results indicate that our model provides a more comprehensive representation of student learning patterns,enhancing the ability to predict future performance with greater precision.

关键词： Knowledge tracing multilayer perceptron channel mixer sequence mixer

Expression of IL-2 and IL-11 and its significance in patients with ankylosing spondylitis

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Asian Pacific Journal of Tropical Medicine 2013年第1期6卷 76-78页

作者： Feng Liu Fan Wang cong-cong Wang Nuo Li shu-Feng Li Department of Orthopedics Zhangqiu People's Hospital Department of Orthopedics Qianfoshan Hospital

Objective:To explore the expression of IL-2 and IL-11 and its significance in patients with ankylosing spondylitis(AS).Methods:A total of 48 active AS patients in our hospital and 40 normal control subjects were selected in our *** ankylosing spondylitis disease activity index(BASDAI),Bath ankylosing spondylitis functional index(BASFI),Bath ankylosing spondylitis metrology index(BASMI),ESR and CRP expression levels were compared before treatment,12 h after treatment and 24 h after ***-2 and IL-11 expression were also compared between these two ***:The BASDAI score,BASH score and BASMI score of the AS patients before treatment significantly decreased compared with those 12 weeks and 24 weeks after treatment(P0.05). Pearson’s linear-correlation analysis showed that serum IL-2 level had a positive correlation with BASDAI,BASFI,BASMI,ESR and CRP(r=0.661.0.547,0.474,0.362,0.416,P<0.05) and serum IL-11 level had a negative correlation with BASDAI,BASFI,BASMI,ESR and CRP(r=-0.629, -0.412,-0.422,-0.387,-0.408,-0.315,P<0.05).Conclusions:Serum levels of IL-2 in active AS patients significantly increase and will decrease after ***,serum levels of IL- 11 significantly decrease and will increase after treatment,which indicates that serum IL-2 has a positive correlation with the degree of AS and serum IL-11 has a negative correlation with the degree of AS,both of which are correlated closely with the onset of AS.

关键词： Ankylosing spondylitis IL-2 IL-11