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Analysis of genetic diversity and population structure in sweetpotato using SSR markers

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Journal of Integrative Agriculture 2023年第11期22卷 3408-3415页

作者： LIU Cheng ZHAO ning jiang Zhi-cheng ZHANG Huan ZHAI Hong HE Shao-zhen GAO Shao-pei LIU Qing-chang Key Laboratory of Sweetpotato Biology and Biotechnology Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and UtilizationMinistry of Education/College of Agronomy&BiotechnologyChina Agricultural UniversityBeijing 100193P.R.China

Sweetpotato, Ipomoea batatas(L.) Lam., is an important food crop worldwide. Large scale evaluation of sweetpotato germplasm for genetic diversity is necessary to determine the genetic relationships between them and effectively use them in the genetic improvement. In this study, the genetic diversity of 617 sweetpotato accessions, including 376landraces and 162 bred varieties from China and 79 introduced varieties from 11 other countries, was assessed using 30 simple sequence repeat(SSR) primer pairs with high polymorphism. Based on the population structure analysis,these sweetpotato accessions were divided into three groups, Group 1, Group 2 and Group 3, which included 228, 136and 253 accessions, respectively. Consistent results were obtained by phylogenic analysis and principal coordinate analysis(PCoA). Of the three groups, Group 2 showed the highest level of genetic diversity and its accessions were mainly distributed in low-latitude regions. The accessions from South China exhibited the highest level of genetic diversity, which supports the hypothesis that Fujian and Guangdong were the first regions where sweetpotato was introduced to China. Analysis of molecular variance(AMOVA) indicated significant genetic differentiations between the different groups, but low levels of genetic differentiation existed between the different origins and accession *** results provide valuable information for the better utilization of these accessions in sweetpotato breeding.

关键词： sweetpotato genetic diversity population structure SsR

The Effect of Topologies and Refilling Short-chain PEG on Protein Adsorption

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Chinese Journal of Polymer Science 2023年第12期41卷 1879-1888,I0007页

作者： Chi Li Jia-ning Zhang Jing Jin Wei jiang State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

PEGylation is the gold standard for constructing protein resistance ***,grafting mPEG-SH and SH-PEG-SH with varied molecular weights(Mw=5K,10K,and 20K)on a gold chip,and the subsequent lysozyme adsorptions of the PEG layers are evaluated using quartzcrystal microbalance based on dissipation(QCM-D).The lysozyme resistance depends on the features of grafting density and chain conformation,i.e.,linear and looped ***,long-chain PEG(Mw≥10K)is insufficient to form a dense layer to resist protein due to large steric ***-chain PEG(Mw=1K)with linear and looped structures is used to refill onto the long-chain PEG layer to increase the grafting density of PEGs and improve protein *** refilling process and the subsequent protein adsorption depend on conformation rather than the density of the long-chain PEG ***,the long-chain PEG looped substrates significantly improve protein resistance,attributing to the high viscoelasticity of the looped substrate and an increase in grafting density after ***,refilling short-chain PEG improves protein resistance and the substrate conformation-dependence gives insight into the impact of topology,providing new ideas for how to increase chain density and select suitable topology to resist protein adsorption and demonstrating a potential application in biomedical fields.

关键词： Poly(ethylene glycol) Refilling Protein adsorption Conformation QCM-D

Giant nontraumatic myositis ossificans in a child:A case report

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World Journal of Clinical Cases 2022年第9期10卷 2901-2907页

作者： An-ning Xia jiang-Sheng Wang Department of Orthopedic Shenzhen Children’s HospitalShenzhen 518000Guangdong ProvinceChina

BACKGROUND Nontraumatic myositis ossificans is a rare disease whose specific pathogenesis is *** diagnosis of this disease is very difficult in children because of difficulties in determining medical history and nonspecific early clinical manifestations,which may lead to the failure of timely and effective diagnosis and treatment in some *** report the diagnosis and treatment of a child with nontraumatic myositis ossificans and summarize the clinical characteristics and diagnosis and treatment of the *** SUMMARY An 8-year-old girl first came to our hospital for more than a week with pain in the right lower *** was no history of trauma or strenuous *** physical examination,no mass on the right thigh was found,and the movement of the right lower extremity was *** showed synovitis of the hip,and bed rest was *** days later,the child’s pain persisted and worsened,accompanied by fever and other *** came to our hospital again and a mass was found on the right thigh with redness and swelling on the *** images showed a soft tissue tumor on the right thigh with *** blood tests revealed that the inflammation index was significantly *** case of infection,the patient was given antibiotics,and the pain was relieved soon after,without ***,the right thigh mass persisted and *** patient underwent incision biopsy more than 1 mo later,and the postoperative pathology showed nontraumatic myositis *** approximately 9 mo of observation,the tumor still persisted,which affected the life of the child,and then resection was *** follow-up,there has been no *** Due to the difficulty in discerning a child’s medical history and the diverse early manifestations,it is difficult to diagnose nonossifying muscle disease in children in its early *** such as timely follow-up and periodic image monitoring are

关键词： Myositis ossificans Nontraumatic myositis ossificans Child Case report

Facile synthesis of bimodal macroporous g-C_3N_4/SnO_2 nanohybrids with enhanced photocatalytic activity

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Science Bulletin 2019年第1期64卷 44-53页

作者： Yingzhi Chen Wenhao Li Dongjian jiang Kuo Men zhen Li Ling Li Shizheng Sun Jingyuan Li zheng-Hong Huang Lu-ning Wang School of Materials Science and Engineering University of Science and Technology Beijing State Key Laboratory of Advanced Materials for Smart Sensing General Research Institute for Non-Ferrous Metals Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing

It is of vital importance to construct highly interconnected,macroporous photocatalyst to improve its efficiency and applicability in solar energy conversion and environment ***-like C_3N_4(g-C_3N_4),as an analogy to two-dimensional(2D)graphene,is highly identified as a visible-lightresponsive polymeric ***,the feasibility of g-C_3N_4 in making porous structures has been well ***,the preparation of macroporous g-C_3N_4 with abundant porous networks and exposure surface,still constitutes a *** solve it,we report a first facile preparation of bimodal macroporous g-C_3N_4 hybrids with abundant in-plane holes,which is simply enabled by in-situ modification through thermally treating the mixture of thiourea and SnCl_4(pore modifier)after rotary *** one hand,the formed in-plane macropores endow the g-C_3N_4 system with plentiful active sites and short,cross-plane diffusion channels that can greatly speed up mass transport and *** another,the heterojunctions founded between g-C_3N_4 and SnO_2 consolidate the electron transfer reaction to greatly reduce the recombination *** a consequence,the resulted macroporous gC_3N_4/SnO_2 nanohybrid had a high specific surface area(SSA)of 44.3 m^2/g that was quite comparable to most nano/mesoporous g-C_3N_4 *** interconnected porous network also rendered a highly intensified light absorption by strengthening the light *** with the improved mass transport and electron transfer,the macroporous g-C_3N_4/SnO_2 hybrid exhibited about 2.4-fold increment in the photoactivity compared with pure g-C_3N_***,the recyclability of such hybrid could be guaranteed after eight successive uses.

关键词： Highly macroporous g-C3N4 Nanohybrid Interconnected network Photocatalysis

Influences of Ignition Temperature, Urea-to-Metal Nitrates Molar Ratio, and Further Calcination on Synthesis of C_4AF via the SPCR Method

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Journal of Wuhan University of Technology(Materials Science) 2018年第5期33卷 1168-1175页

作者： LI Yang HE zhen jiang Rui State Key Laboratory of Water Resources ＆ Hydropower Engineering Science Wuhan UniversityWuhan 430072China Shaanxi Key Laboratory of Safety and Durability of Concrete Structures Xo＇ing UniversityXi＇an 710123China

The self-propagating combustion reaction（SPCR）method was employed to synthesize C4AF using metal nitrates as cation precursors and urea as *** decomposition behavior of dried gels,phase identification and crystallinity of synthesized C4AF,and impact of urea to metal nitrates（UR/MN）molar ratio on synthesis effect were investigated with the aid of differential thermogravimetric analysis,X-ray diffraction and Fourier transform inferred *** is found that pure C4AF can be prepared by the SPCR method in 2 h at 500℃.The UR/MN molar ratio plays a significant role in the thermal decomposition behavior of dried gel,purity,crystallinity and crystallite size of synthesized *** temperature should be not lower than 500℃but higher temperatures were *** trace of free lime in synthesized C4AF is detected and calcium carbonate is the transition *** calcining the synthesized C4AF at high temperatures is beneficial for increasing crystallinity,purity and crystallite *** activation energy of the further calcination process is 119.6 kJ/*** is more efficient to improve the synthesis effect by increasing UR/MN molar ratio than further calcination at high temperatures.

关键词： C4AF combustion synthesis self-propagating brownmillerite purity low temperature

An Improved Detection Algorithm of Face with Combining AdaBoost and SVM

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An Improved Detection Algorithm of Face with Combining AdaBo...

Scheme for Generation of Maximally Entangled States via Entanglement Swapping

第25届中国控制与决策会议

作者： Jia Mingxing Du Junqiang Cheng Tao Yang ning jiang Yi Zhang zhen Academy of Information Science and Engineer Northeastern University

ISBN: (纸本)9781467355339

This paper proposes a face detection method by combining SVM into the traditional face detection algorithm named AdaBoost. This method adopts SVM classifier instead of traditional AdaBoost classifier based on AdaBoost cascade framework. To get SVM classifier, extract several Haar-like features with the strongest classification ability in the process of training SVM classifier. To ensure the generalization capability of classifier classify validation set, and using the penalty factor setting with focus makes SVM classifier pay more attention to the face samples, while the training samples reached a high goodness of fit. At the same time, this thesis improves the extraction method of Haar-like feature. Finally, using matlab simulation test the effectiveness of the algorithm. The experiments show that the improved detection algorithm of face with combining AdaBoost and SVM reduces the amount of computation and improve the detection rate.

关键词： AdsBoost algorithm face detection Haar-like feature SVM

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Communications in Theoretical Physics 2006年第3X期46卷 553-555页

作者： WU zhen-zhen FANG Mao-Fa jiang Chun-Lei College of Physics and Information Science Hunan Normal University Changsha 410081 China

Based on two atoms and two cavities initially in two pairs of atom-photon nonmaximally entangled states, we propose a relatively simple scheme to create maximally entangled photon-photon and atom-photon states via entanglement swapping using techniques of cavity QED inspired by the scheme proposed in [Phys. Rev. A 71 （2005） 044302] and [Phys. Rev. A 71 （2005） 034312]. Our scheme does not involve the measurement in Bell basis, we only require detecting the states of atoms.

关键词： quantum entanglement entanglement swapping cavity QED

Constructing mild expanded graphite microspheres by pressurized oxidation combined microwave treatment for enhanced lithium storage

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Rare Metals 2021年第4期40卷 837-847页

作者： Can-Liang Ma zhen-Hui Hu ning-Jing Song Yun Zhao Yan-zhen Liu Hui-Qi Wang Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province Institute of Molecular ScienceShanxi UniversityTaiyuan 030006China College of Chemistry and Chemical Engineering Jinzhong UniversityJinzhong 030619China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China School of Energy and Power Engineering School of Material Science and EngineeringNorth University of ChinaTaiyuan 030051China

The modified graphite anode materials have some prominent advantages over other anode materials in the industrial applications.A novel simple and gentle method is proposed to synthesize the mild expanded graphite microspheres(MEGMs) from flake graphite spheres through a combined modified pressurized oxidation combined with the microwave *** microstructural results demonstrate that moderately expanded MEGMs with an expansion volume between 4 and 10 ml·g^(-1)exhibit a highly microporous structure with an enlarged interlayer spacing,a decreased microcrystalline size,as well as an increased number of functional groups on the surface,resulting in the increased storage sites and spaces for lithium ions and the enhanced diffusion rate of lithium *** used as the anode material for lithium-ion batteries,the MEGM-T75t30 obtained by oxidation treatment at 75℃ for 30 min followed by microwave irradiation for expansion displays a high reversible capacity of 446.7 mAh·g^(-1) at 100 mA·g^(-1) after 100 cycles and excellent rate performance(330 and 116 mAh·g^(-1) at 800 and 3200 mA·g^(-1),respectively).Therefore,the MEGMs prepared by this convenient and mild method show excellent electrochemical properties and good application potential.

关键词： Pressurized oxidation Microwave treatment Mild expanded graphite microspheres Microstructure Graphitic anode material Lithium-ion battery

Clustering compressed sensing based on image block similarities

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The Journal of China Universities of Posts and Telecommunications 2014年第4期21卷 68-76页

作者： LI Wei-wei jiang Ting WANG ning Key Laboratory of Universal Wireless Communication Beijing University of Posts and Telecommunications

Compressed sensing （CS） algorithm enables sampling rates significantly under classical Nyquist rate without sacrificing reconstructed image quality. It is known that, a great number of images have many similar areas which are composed by the same number of grayscale or color. A new CS scheme, namely clustering compressed sensing （CCS）, was proposed for image compression, and it introduces clustering algorithm onto framework of CS based on similarity of image blocks. Instead of processing the image as a whole, the image is firstly divided into small blocks, and then the clustering algorithm was proposed to cluster the similar image blocks. Afterwards, the optimal public image block in each category is selected as the representative for transmission. The discrete wavelet transform （DWT） and Gaussian random matrix are applied to each optimal public image block to obtain the random measurements. Different from equal measurements, the proposed scheme adaptively selects the number of measurements based on different sparsity of image blocks. In order to further improve the performance of the CCS algorithm, the unequal-CCS algorithm based on the characteristics of wavelet coefficients was proposed as well. The low frequency coefficients are retained to ensure the quality of reconstructed image, and the high frequency coefficients are compressed by the CCS algorithm. Experiments on images demonstrate good performances of the proposed approach.

关键词： CS DWT clustering algorithm