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Chinese Chemical Letters 2022年第12期33卷 5189-5195页

作者： Zhiyuan Pang Bin Wang xingwang yan Chongtai Wang Sheng Yin Huaming Li Jiexiang Xia School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China School of Chemistry and Chemical Engineering the Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan ProvinceHainan Normal UniversityHaikou 571158China

Carbonized polymer dots(CPDs)modified layer-structured CdBiO_(2)Br(CPDs/CdBiO_(2)Br)Z-scheme heterojunction hybrid material has been synthesized via simple solvothermal *** hybrid material with Z-scheme heterojunction can effectively maintain the original highly oxidizing holes of CdBiO_(2)Br and the highly reducing electrons of *** addition,the construction of heterostructure is beneficial to the migration and separation of photogenerated *** visible light irradiation,6 wt%CPDs/CdBiO_(2)Br showed the best catalytic activity for degradation of organic *** radical capture experiments and ESR analysis confirmed that the main active species are·O_(2)^(-)and h^(+).The decomposition process of organic pollutants was analyzed by ***,the probable visible light mechanism performance of CPDs/CdBiO_(2)Br as direct Z-scheme heterojunction photocatalytic materials was proposed.

关键词： Carbonized polymer dots CdBiO_(2)Br Direct Z-scheme heterojunction Pollutant degradation Photocatalytic activity

In-Situ Synthesis of CQDs/BiOBr Material via Mechanical Ball Milling with Enhanced Photocatalytic Performances

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Chinese Journal of Structural Chemistry 2022年第8期41卷 44-51页

作者： xingwang yan Bin Wang Mengxia Ji Qi Jiang Gaopeng Liu Pengjun Liu Sheng Yin Huaming Li Jiexiang Xia Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province Hainan Vocational University of Science and TechnologyHaikou 571126China School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China

Designing simple, efficient, and environmentally friendly methods to construct high-efficient photocatalysts is an important strategy to promote the further development of the field of photocatalysis. Herein, flower-like carbon quantum dots(CQDs)/Bi OBr composite photocatalysts have been prepared via in-situ synthesis by mechanical ball milling in the existence of ionic liquid. The CQDs/Bi OBr composites exhibit higher photo-degradation performance for tetracycline(TC) than Bi OBr monomer and the commercial Bi_(2)O_(3) under visible light irradiation. For comparison, the different Br sources and synthetic methods are chosen to prepare Bi OBr and CQDs/Bi OBr composites. Photocatalysts prepared by ball milling and ionic liquid present significantly enhanced photocatalytic performance for removing TC. In addition, the introduction of CQDs could distinctly enhance the photocatalytic performances of pure Bi OBr. The reason is that CQDs as electron acceptor effectively separate electrons and holes and inhibit their recombination. The intermediates during photocatalytic degradation were tested using liquid chromatography-mass spectrometry(LC-MS) and possible degradation pathways were given. During degradation, ·OH, O_(2)^(·-)and h^(+) were identified to be the main active species based on electron spin resonance(ESR) spectra and free radical trapping experiments. A possible mechanism of CQDs/Bi OBr with enhanced photocatalytic performances was further proposed.

关键词： CQDs BiOBr photocatalysis pollutant degradation

基于改进DeepLabv3+的轻量化作物杂草识别方法

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石河子大学学报（自然科学版） 2024年第1期42卷 117-125页

作者：曲福恒李金状杨勇康镇南严兴旺长春理工大学计算机科学技术学院吉林长春130022 长春师范大学教育学院吉林长春130032

为在存储资源与计算能力有限的设备上实现田间作物和杂草的识别,本文提出一种基于改进DeepLabv3+的轻量化语义分割网络。首先,以MobileNet v2作为DeepLabv3+的特征提取骨干网络,提出双分支残差模块替换倒残差模块,并删除后两层卷积以降... 详细信息

为在存储资源与计算能力有限的设备上实现田间作物和杂草的识别,本文提出一种基于改进DeepLabv3+的轻量化语义分割网络。首先,以MobileNet v2作为DeepLabv3+的特征提取骨干网络,提出双分支残差模块替换倒残差模块,并删除后两层卷积以降低模型参数量。其次,在空洞空间金字塔池化(Atrous Spatial Pyramid Pooling,ASPP)模块中引入分组逐点卷积,使用深度扩张卷积替换标准卷积,并将卷积后的特征图进行多尺度特征融合增强对作物和杂草深层特征的提取能力。最后,将原有的非线性激活函数替换为Leaky ReLU激活函数来提升分割精度。实验结果表明:改进后网络的mIOU达到86.75%,参数量仅为0.69M,FPS达到了98,与原始DeepLabv3+以及3个典型轻量化语义分割网络的相比,参数量最小,在对比的轻量化网络中具有最高的分割精度。

关键词：作物和杂草识别轻量化语义分割 DeepLabv3+ MobileNet v2 多尺度特征融合

Dynamic response and damage evolution of Zr-based bulk metallic glass under shock loading

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Journal of Materials Science & Technology 2021年第34期93卷 119-127页

作者： yan Li xingwang Cheng Zhaolong Ma Xuhai Li Meng Wang National Key Laboratory of Science and Technology on Materials under Shock and Impact School of Material Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Science and Technology on Shock Waves and Detonation Physics Laboratory Institute of Fluid PhysicsChinese Academy of Engineering PhysicsMianyang 621900.China

Dynamic response and damage evolution of Zr_(70)Cu_(13)Ni_(9.8)Al_(3.6)Nb_(3.4)Y_(0.2) bulk metallic glass(Zr-based BMG)under impact pressure ranging from 4.03 GPa to 27.22 GPa were *** Hugoniot Elastic Limit(HEL)and the spalling Strength(σ_(sp))were measured as 7.09 GPa and 2.28 GPa,and the curve of impact velocity(D)and particle velocity(u)were also *** the strain rate of~10^(5)s^(-1),local crystallization phenomenon was *** increasing the impact pressure,the failure mode of Zr-based BMG changed from spallation to fragmentation caused by the combination of spalling cracks and longitudinal ***-cup structures were also observed in the internal spalling zone via nano-CT *** increasing the impact pressure,the thickness of Zr-based BMG increased after impact and the remelting and cladding layers were also observed on the fracture *** fragments of the specimen were welded after impact due to the high temperature remelting,which causes plastic deformation of Zr-based BMG under shock loading.

关键词： Zr-based bulk metallic glass Shock loading Dynamic response Damage evolution

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Journal of Genetics and Genomics 2010年第6期37卷 359-369页

作者： Changgen Xie Xiaona Zhou xingwang Deng yan Guo College of Life Sciences Peking University Beijing 100871 China National Institute of Biological Sciences Beijing 102206 China

NPR1 （Nonexpressor of Pathogenesis-Related gene 1） is a major co-activator of plant defense. Phosphorylations of NPR1 play important roles in fine-tuning its activity, however a kinase corresponding to such modification remains uncharacterized. Here, we report that NPR1 interacts with PKS5 （SOS2-1ike Protein Kinase 5）. The AKR （AnKyrin Repeats） motif of NPR1 is required for this interaction. PKS5 phosphorylates NPR1 at the C-terminal region. Expression of PKS5 is induced quickly by Pseudomonas syringae pv. tomato DC3000. Expression level of two NPR1 target genes, WRKY38 and WRKY62, is reduced and/or delayed in pks5 mutants. Moreover, the expression of WRKY38 and WRKY62 displays a similar pattern in nprl-lpks5-1 double mutant comparing to that in nprl-1. Our results suggest that PKS5 functions at the upstream of NPR1 and might mediate expression of WRKY38 and WRKY62 possibly by interacting with and phosphorylating NPR 1.

关键词： phosphorylation kianse AKR co-immunopreeipitation NPR1

基于模型越野车差速锁控制算法的实验平台研制

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汽车实用技术 2024年第7期49卷 107-112页

作者：杨浩东何锐波张聪罗德意闫兴旺广西科技大学机械与汽车工程学院广西柳州545000

为了解决现有差速锁自动控制算法实验平台存在的成本高、效率低、数据采集困难等问题,课题组研制了一款基于模型越野车差速锁自动控制算法试验平台。通过在一辆1:8的模型仿真越野车上布置传感器采集车辆状态信息传输到控制器计算处理,... 详细信息

为了解决现有差速锁自动控制算法实验平台存在的成本高、效率低、数据采集困难等问题,课题组研制了一款基于模型越野车差速锁自动控制算法试验平台。通过在一辆1:8的模型仿真越野车上布置传感器采集车辆状态信息传输到控制器计算处理,通过蓝牙方式实时观测传感器检测车辆状态信息,控制器判断车辆趴窝状态而发出控制指令从而对车辆差速锁的锁止状态进行控制,达到车辆脱困的目的。该实验平台的研发为验证差速锁的自动控制算法提供技术支持。文章主要介绍了该实验平台的设计方案、结构组成、传感器安装位置和模拟车辆趴窝差速锁的自动锁止、解锁工况,验证了实验平台的有效性和可靠性。该实验平台的开发为后续差速锁自动控制算法的移植提供了试验条件和为验证差速锁控制算法的可靠性提供了实验基础。

关键词：实验平台传感器控制算法控制器

NMA-HTCC前处理在茶多酚抗紫外整理真丝织物中的作用

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印染助剂 2023年第2期40卷 30-33页

作者：颜兴旺张伟肖明辉杜香黄兆驰盐城工学院纺织服装学院江苏盐城224051

采用一种反应性很强的水溶性壳聚糖季铵盐(NMA-HTCC)对真丝织物进行前处理,再用茶多酚提取液对织物进行二次处理。采用正交实验探索NMA-HTCC前处理真丝织物的优化工艺。再对经NMA-HTCC和茶多酚处理后的真丝织物抗紫外性、耐洗性、强力... 详细信息

采用一种反应性很强的水溶性壳聚糖季铵盐(NMA-HTCC)对真丝织物进行前处理,再用茶多酚提取液对织物进行二次处理。采用正交实验探索NMA-HTCC前处理真丝织物的优化工艺。再对经NMA-HTCC和茶多酚处理后的真丝织物抗紫外性、耐洗性、强力、透气性等性能进行测试和分析。结果表明:采用NMA-HTCC前处理真丝织物,当NMA-HTCC质量浓度为8 g/L、处理温度为60℃、处理时间为60 min时,真丝织物的增重率最大。真丝织物先经NMA-HTCC处理、再经茶多酚处理后,紫外线防护系数明显提高,而且洗涤30次后,其UPF值仍在35以上,满足防紫外线纺织品的性能要求,说明NMA-HTCC前处理有利于提高真丝织物对茶多酚的吸附,从而使茶多酚与真丝纤维之间牢固结合。真丝织物经过NMA-HTCC和茶多酚处理后,其断裂强力略有降低,透气性变化不明显。

关键词：壳聚糖季铵盐茶多酚提取物真丝织物抗紫外线强力

A one-pot process based on P_(44414)Cl-HCl aqueous biphasic system for recovering rare earth elements from NdFeB permanent magnet

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Chinese Chemical Letters 2022年第2期33卷 953-956页

作者： Chuanying Liu Qibin yan xingwang Zhang Lecheng Lei Chengliang Xiao College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China

Recovering critical metals from secondary resources have attracted great interest *** this work,a green one-pot leaching-extraction process based on tributyl(tetradecyl)phosphonium chloride (P_(44414)Cl)aqueous biphasic system (ABS) was developed to efficiently recover rare earth elements (REEs) from Nd Fe B permanent *** reaction process,phase separation mechanism,and operation conditions were thoroughly *** is found that the P_(44414)Cl-HCl ABS showed strong extraction ability towards Fe (>99%) whereas only a few REEs (<10%) were extracted,leading to extremely high separation selectivity between Fe and *** characterization results showed that the coordination differences of Fe and Nd in HCl were the main driving forces for such highly selective *** phase diagram of P_(44414)Cl-Nd Cl_(3)ABS indicated that the salting-out effect of Nd Cl_(3)was stronger than common *** to the hydrophobic property of P_(44414)[Fe Cl_(4)]and salting-out effect of Nd Cl_(3),the P_(44414)Cl could directly form ABS at room temperature after dissolving practical roasted Nd Fe B samples without any other operations and *** and Fe could be mutually separated in just one *** with traditional liquid-liquid extraction or ABS separation,this recovery process is green and facile and shows great application prospects in the field of rare-earth recovery.

关键词： Rare earth Ionic liquid NdFeB permanent magnet P_(44414)Cl Aqueous biphasic system

行人横穿场景下某智能接驳车AEB算法优化研究

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汽车实用技术 2024年第8期49卷 22-29页

作者：罗德意陆静王玉江闫兴旺杨浩东广西科技大学机械与汽车工程学院广西柳州545000

为应对景(园)区内行人横穿等复杂情况,提高自动紧急制动(AEB)对行人保护的安全性。文章建立了某智能接驳车在路面激励特性和车辆特性前提下的动力学模型,提出了基于模糊推理的智能接驳车AEB控制算法,通过MATLAB/Simulink仿真软件对控制... 详细信息

为应对景(园)区内行人横穿等复杂情况,提高自动紧急制动(AEB)对行人保护的安全性。文章建立了某智能接驳车在路面激励特性和车辆特性前提下的动力学模型,提出了基于模糊推理的智能接驳车AEB控制算法,通过MATLAB/Simulink仿真软件对控制算法进行仿真,并将该算法应用到实车测试,与传统控制算法进行了比较试验。结果表明,接驳车在5.14 s全力制动时比传统值(5.35 s)快0.21 s;接驳车刹停后,距离行人安全距离传统值为1.53 m,优化值为1.91 m,两者误差为0.38 m,优化后更加精确安全,能有效避撞的同时也说明了该算法的可行性。

关键词：行人横穿场景 AEB 动力学模型模糊推理

Synthesis of carbon nitride in moist environments:A defect engineering strategy toward superior photocatalytic hydrogen evolution reaction

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Journal of Energy Chemistry 2021年第3期30卷 403-413页

作者： Shuquan Huang Feiyue Ge Jia yan Hongping Li xingwang Zhu Yuanguo Xu Hui Xu Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013JiangsuChina Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chirosciences The Hong Kong Polytechnic UniversityHung HomHong KongChina

Intimate understanding of the synthesis-structure-activity relationships is an accessible pathway to overcome the intrinsic challenges of carbon nitride(g-C_(3)N_(4))*** work looks in the effects of humidity of the synthesis process to the morphology,chemical structure,band structure as well as the photocatalytic activity of g-C_(3)N_(4) *** g-C_(3)N_(4) samples were prepared by heating melem in four gas environments:dry Ar,dry Air,moist Ar and moist *** photocatalytic activity measurements revealed that the samples synthesized in moist inert and oxidic gases environments displayed 20 and 10 times the photocata lytic H_(2) evolution activity of the samples synthesized in dry inert and oxidic gases environments,*** reasons for this remarkable variety in photocata lytic activities had been through *** all,the terminations of the carbon vacancies were identified as the dominant factor in enhancing H_(2) evolution *** work here thus demonstrating an example of defect engineering.

关键词： H_(2)evolution,g-C_(3)N_(4) Carbon vacancy Terminal functional groups