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Influence of heat treatment on microstructures and micro-hardness of n-SiO2/Ni composite coating

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中国有色金属学会会刊:英文版 2004年第Z1期14卷 111-114页

作者： XU Bin-shi WANG hai-dou DONG Shi-yun JIANG Bin tu Wei-yi National Key Laboratory for remanufacturing Academy of Armored Force Engineering Beijing 100072 China

The n-SiO2/Ni composite electro-brush plating coating was prepared on the 1045 steel substrate. SEM and TEM were utilized to analyze the surface and cross-section morphologies or the microstructures of the composite coating before and after heat treatment, as well as a micro-hardness tester was used to measure the micro-hardness before and after heat treatment. The results show that the entrance of nano SiO2 particles into composite coating makes the micro-hardness higher. After heat treatment, due to the obstruction to growth of Ni crystals from nano particles, the composite coating still possesses a higher micro-hardness than that of common Ni-base coating.

关键词： nano SiO2 particles electro-brush plating composite coating heat treatment microstructures microhardness

Comparison of sexual compatibility in crosses between the southern and northern populations of the cabbage beetle Colaphellus bowringi

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Insect Science 2014年第6期21卷 775-784页

作者： Xing-Ping Liu Xiao-yun tu hai-Min He Chao Chen Fang-Sen Xue Institute of Entomology Jiangxi Agricultural UniversityNanchang China Life and Sciences College Jiangxi Normal University Nanchang China

It is widely accepted that the genetic divergence and reproductive incompat- ibility between closely related species and/or populations is often viewed as an important step toward speciation. In this study, sexual compatibility in crosses between the southern XS population and the northern TA population of the polyandrous cabbage beetle Co- laphellus bowringi was investigated by testing their mating preferences, mating latency, copulation duration, and reproductive performances of post-mating. In choice mating ex- periments, the percentages ofmatings were significantly higher in intra-population crosses than in inter-population crosses. Both isolation index （/） and index of pair sexual isolation （/PSi） indicated partial mating incompatibility or assortative mating in crosses between the two different geographical populations. In single pair mating experiments, XS females in inter-population crosses mated significantly later and copulated significantly shorter than those in intra-population crosses. However, TA females in inter-population crosses mated significantly earlier and copulated longer than those in intra-population crosses, suggesting that larger XS males may enhance heterotypic mating. The lifetime fecundity was highest in XS homotypic matings, lowest in TA homotypic matings, and intermedi- ate in heterotypic rnatings between their parents. The inter-population crosses resulted in significantly lower egg hatching rate and shorter female longevity than intra-population crosses. These results demonstrated that there exist some incompatibilities in premating, postmating-prezygotic, and postzygotic stages between the southern XS population and northern TA population of the cabbage beetle Colaphellus bowringi.

关键词： behavioral responses Colaphellus bowringi Baly mating compatibility mating preference reproductive success

Development of Insect-Resistant Hybrid Rice by Introgressing the Bt Gene from Bt Rice Huahui 1 into Ⅱ-32A/B,a Widely Used Cytogenic Male Sterile System

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Journal of Integrative Agriculture 2014年第10期13卷 2081-2090页

作者： LAI yun-song HUANG hai-qing XU Meng-yun WANG Liang-chao ZHANG Xiao-bo ZHANG Ji-wen tu Ju-min Institute of Crop Sciences College of Agriculture and BiotechnologyZhejiang University Institute of Pomology & Olericulture Sichuan Agricultural University Rice Research Institute of Enshi Academy of Agriculture Sciences

Huahui 1 is an elite transgenic male sterile restorer line of wild rice abortive-type that expresses a Bacillus thuringiensis （Bt） δ-endotoxin and provides effective and economic control oflepidopteran insects. To exploit Huahui 1 to develop a new Bt rice, the insertion site of the Bt gene was determined by thermal asymmetric interlaced PCR （TAIL-PCR）. Bt was located in the promoter region ofLOC. Os10g10360, approximately 5.35 Mb from the telomere of the short arm of chromosome 10. For the first time, a Bt cytoplasmic male sterile （CMS） system was developed by introgressing Bt from Huahui 1. The recipient CMS system used consisted of Indonesia paddy rice-type II-32B （maintainer line） and II-32A （male sterile line）. Marker-assisted selection was used to increase selection efficiency in the backcrossing program. In BC5F1, the Bt plant 85015-8 was selected for further analyses, as it had the highest SSR marker homozygosity. In addition, the linkage drag of the foreign Bt gene in 85015-8 was minimized to 8.01-11.46 Mb. The foreign Bt gene was then delivered from 85015-8 into II-32A. The resultant Bt II-32A and Bt II-32B lines were both resistant to lepidopteran in field trials, and agronomic traits were not disturbed. The maintainability of II-32B, and the male sterility and general combining ability of II-32A, were not affected by the Bt introgression. This study demonstrates a simple and fast approach to develop Bt hybrid rice.

关键词： Bt rice male sterile line genome walker marker-assisted backcross (MAB) marker-assisted selection (MAS) SSR

High-brightness near-infrared luminescent bioprobes based on lanthanide-doped Na3CrF6 nanoparticles

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Science China Materials 2024年第12期67卷 4113-4114页

作者： yun Xing Shiqi Yu Datao tu Xueyuan Chen State Key Laboratory of Structural Chemistry Fujian Key Laboratory of Nanomaterialsand CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China University of Chinese Academy of Sciences Beijing 100049China

Over the past decade,near-infrared(NIR)luminescent materials have emerged as a frontier in photonics and material science,finding diverse applications in bioimaging,encryption,and photodetection[1].Particularly,NIR nanoprobes are widely utilized in life science and clinical medicine because of their high spatial resolution,deep tissue penetration,low optical absorption and scattering,and minimal autofluorescence[2,3].

关键词： nanoparticles frontier utilized

Analysis of a rainwater harvesting system for domestic water supply in Zhoushan,China

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第5期11卷 342-348页

作者： Yong-chao ZHOU Wei-yun SHAO tu-qiao ZHANG Institute of Municipal Engineering Zhejiang University Hangzhou 310058 China

The domestic rainwater harvesting system (DRHS) is an important freshwater source for Zhoushan,China to meet water demands. A computer model has been generated to analyze the performance of the DRHS with different ratios of D/(AR) (water demand/average annual collected runoff) and S/(AR) (storage capacity/average annual collected runoff). The performance of the DRHS was analyzed by means of the model simulation,which is described by its water shortage rate (WSR) and water loss rate (WLR). Using the data,a set of dimensionless design calculation chart is introduced. When the water demand and requirement of the design are known,the established chart can be used to easily determine the storage capacity and catchment (roof and other surface) area required to achieve a desired performance level.

关键词： Domestic rainwater harvesting system (DRHS) Performance Simulation Zhoushan

Laryngopharyngeal reflux disease management for recurrent laryngeal contact granuloma:A case report

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World Journal of Clinical Cases 2021年第8期9卷 1989-1995页

作者： Kai Li Wen-Yong Chen yun-Ying Li tu-Lu Wang Meng-Jia Tan Zong Chen hai Chen Department of Otorhinolaryngology The Second Clinical College of Guangzhou University of Chinese MedicineGuangzhou 510000Guangdong ProvinceChina

BACKGROUND Laryngeal contact granuloma(LCG)is difficult to treat and frequently associated with high persistence and recurrence,despite the availability of both surgical and pharmacological treatment *** appropriate strategy is therefore needed to help patients with multiple recurrences of LCG to potentially avoid unnecessary *** SUMMARY We describe the case of a 34-year-old male patient with recurrent LCG in which a good response was achieved through successful management of laryngopharyngeal reflux disease using a combination pharmacotherapeutic regimen consisting of anti-reflux therapy,pepsin secretion inhibition,bile acid neutralization,and lifestyle *** patient underwent surgery to excise the granuloma,then relapsed,underwent a second surgery,which was followed by a second *** granuloma then disappeared after 9 mo of combined treatment with ilaprazole enteric-coated capsules(10 mg qd),mosapride tablets(5 mg tid)and compound digestive enzyme capsules(2 tablets).The drug regimen was discontinued after one year,and no recurrence of the lesion has been reported during the one-year follow-up *** We report a combination of pharmacotherapeutics and lifestyle modifications for the management of laryngopharyngeal reflux disease to address recurring LCG.

关键词： Recurrent laryngeal contact granuloma Laryngopharyngeal reflux disease management Anti-reflux therapy Pepsin secretion inhibition Bile acid neutralization Case report

Semi-Supervised Learning with Generative Adversarial Networks on Digital Signal Modulation Classification

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Computers, Materials & Continua 2018年第5期55卷 243-254页

作者： Ya tu yun Lin Jin Wang Jeong-Uk Kim College of Information and Communication Engineering Harbin Engineering UniversityHarbin 150001China School of Computer&Communication Engineering Changsha University of Science&TechnologyChangsha 410114China School of Information Engineering Yangzhou UniversityYangzhou 225009China Department of Energy Grid Sangmyung UniversitySeoulKorea

Deep Learning(DL)is such a powerful tool that we have seen tremendous success in areas such as Computer Vision,Speech Recognition,and Natural Language *** Automated Modulation Classification(AMC)is an important part in Cognitive Radio Networks,we try to explore its potential in solving signal modulation recognition *** cannot be overlooked that DL model is a complex model,thus making them prone to *** model requires many training data to combat with over-fitting,but adding high quality labels to training data manually is not always cheap and accessible,especially in real-time system,which may counter unprecedented data in ***-supervised Learning is a way to exploit unlabeled data effectively to reduce over-fitting in *** this paper,we extend Generative Adversarial Networks(GANs)to the semi-supervised learning will show it is a method can be used to create a more dataefficient classifier.

关键词： Deep Learning automated modulation classification semi-supervised learning generative adversarial networks

Toughness enhancement of single-crystal diamond by the homoepitaxial growth of periodic nitrogen-doped nano-multilayers

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International Journal of Minerals,Metallurgy and Materials 2023年第4期30卷 766-771页

作者： yun Zhao Juping tu Liangxian Chen Junjun Wei Jinlong Liu Chengming Li The Future Laboratory Tsinghua UniversityBeijing 100084China Academy of Arts&Design Tsinghua UniversityBeijing 100084China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China College of Science China Agricultural UniversityBeijing 100083China

Periodic nitrogen-doped homoepitaxial nano-multilayers were grown by microwave plasma chemical vapor deposition. The residual time of gases(such as CH4and N2) in the chamber was determined by optical emission spectroscopy to determine the nano-multilayer growth process, and thin, nanoscale nitrogen-doped layers were obtained. The highest toughness of 18.2 MPa·m^(1/2)under a Young’s modulus of1000 GPa is obtained when the single-layer thickness of periodic nitrogen-doped nano-multilayers is about 96 nm. The fracture toughness of periodic nitrogen-doped CVD layer is about 2.1 times that of the HPHT seed substrate. Alternating tensile and compressive stresses are derived from periodic nitrogen doping;hence, the fracture toughness is significantly improved. Single-crystal diamond with a high toughness demonstrates wide application prospects for high-pressure anvils and single-point diamond cutting tools.

关键词： microwave plasma chemical vapor deposition diamond fracture toughness nitrogen doping

Influence of mandrel-cores filling on size effect of cross-section distortion of bimetallic thin-walled composite bending tube

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Chinese Journal of Aeronautics 2023年第3期36卷 421-435页

作者： Yingxia ZHU Miaomiao WAN Wei CHEN yun WANG Wenbin tu Fan XU School of Mechanical Engineering Jiangsu UniversityZhenjiang 212013China School of Mechanical Engineering Guilin University of Aerospace TechnologyGuilin 541004China

Two new size factors of cross-section hollow coefficient and bending degree are introduced to reveal the size effect of bending forming of bimetallic composite *** coefficient and bending degree can limit the commonly used bent tube to the size description range of(0,2.00).The evolution laws of the cross-section distortion forms in the hollow coefficient-bending degree interval are revealed as well as the action of the mandrel-cores on the size *** show the mandrel-cores filling can expand the forming limit of the bent tube,but also bring two other forming defects of wrinkle and *** identification factor(hollow coefficient multiply bending degree)provides a method for querying the cross-section distortion forms of all composite bending *** the identification factor interval(0,1.00),the distribution area of bending forming defects of the composite tube is *** thin-walled composite bending tube collapses when identification factor in(0,0.39),wrinkles when identification factor in[0.39,0.50),and ruptures when identification factor in[0.50,1.00).The mathematical model of size effect is derived,by which the average cross-section distortion rate is found to distribute like a radial leaf in the hollow coefficient-bending degree qualified forming *** best forming zone is hollow coefficient 0.46-0.68,and bending degree 0.25-0.47.

关键词： Bending Bimetallic composite tube Cross-section distortion Size factor Size effect Mandrel