Liquid Crystal Shells for Artificial Pollen Grains

Jinming Zhou 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2

Over the past dozen years there has been a significant effort to create new assemblies of colloid crystals with increasingly complex structures. In this presentation, I will introduce novel method to fabricate various colloids using polymerizable liquid crystal (PLC) shells and droplets. Since liquid crystals (LCs) can have various self-assembled structures depending on their phases, size, thickness, surface anchoring and elasticity, a rich of topologies can be formed in spherical confinements such as shell or bulk drop by coding particular LC fields. Here, I have shown various PLC colloids by using the topologies as skeletal for topographical evolution through two steps, polymerization and buckling by volume contraction. The mechanism of buckling and reversible behaviors by swelling and de-swelling were studied and the topographical structures were observed using polarized optical microscopy (POM) and scanning electron microscopy (SEM).

EMP3 Overexpression in Primary Breast Carcinomas is not Associated with Epigenetic Aberrations

Wei Zhou,Jinming Yu,Zheng Jiang,Xingang Li,Fenghua Xu,Yanbing Liu,Peie Wen,Li Kong,Ming Hou,Jinming Yu 대한의학회 2009 Journal of Korean medical science Vol.24 No.1

Epithelial membrane protein 3 (EMP3) is a trans-membrane signaling molecule with important roles in the regulation of apoptosis, differentiation and invasion of cancer cells, but the detailed is largely still unknown. We analyzed the mRNA levels and methylation statuses of EMP3 in 63 primary breast carcinomas and assessed their correlations with clinicopathologic variables. The expression of EMP3 mRNA in primary breast carcinomas was significantly higher than the expression of 20 normal breast tissues (p<10-7). EMP3 overexpression in breast carcinomas was significantly related to histological grade III (p=3.9×10-7), lymph node metastasis (p= 0.003), and strong Her-2 expression (p=3.3×10-6). Hypermethylation frequencies of EMP3 were detected in 36.5% of breast carcinomas by methylation-specific polymerase chain reaction. However, no significant correlations were found between methylation status of EMP3 and mRNA expression levels as well as other clinical parameters. In conclusion, EMP3 may be a novel marker of tumor aggressiveness. Overexpression of EMP3 in primary breast carcinoma is not associated with DNA methylation.

Synthesis and Hybridizations of Copper Microplates for Catalytic Applications

Yuhuan Li,Jinming Zhou 한국고분자학회 2022 한국고분자학회 학술대회 연구논문 초록집 Vol.47 No.1

Synthesis of Ag-Ag2S Hybrid Nanoplates with Unique Heterostructure and Their Photocatalytic Application

Pan Jia,Jinming Zhou 한국고분자학회 2022 한국고분자학회 학술대회 연구논문 초록집 Vol.47 No.1

Genome-wide association analysis for yield-related traits at the R6 stage in a Chinese soybean mini core collection

Li Xiangnan,Zhou Yang,Bu Yuanpeng,Wang Xinfang,Zhang Yumei,Guo Na,Zhao Jinming,Xing Han 한국유전학회 2021 Genes & Genomics Vol.43 No.8

Background Soybean (Glycine max (L.) Merr.) is an economically important crop for vegetable oil and protein production, and yield is a critical trait for grain/vegetable uses of soybean. However, our knowledge of the genes controlling the vegetable soybean yield remains limited. Objective To better understand the genetic basis of the vegetable soybean yield. Methods The 100-pod fresh weight (PFW), 100-seed fresh weight (SFW), kernel percent (KP) and moisture content of fresh seeds (MCFS) at the R6 stage are four yield-related traits for vegetable soybean. We investigated a soybean mini core collection composed of 224 germplasm accessions for four yield-related traits in two consecutive years. Based on 1514 single nucleotide polymorphisms (SNPs), genome-wide association studies (GWAS) were conducted using a mixed linear model (MLM). Results Extensive phenotypic variation existed in the soybean mini core collection and signifcant positive correlations were shown among most of traits. A total of 16 SNP markers for PFW, SFW, KP and MCFS were detected in all environments via GWAS. Nine SNP markers were repeatedly identifed in two environments. Among these markers, eight were located in or near regions where yield-related QTLs have been reported in previous studies, and one was a novel genetic locus identifed in this study. In addition, we conducted candidate gene analysis to the large-efect SNP markers, a total of twelve genes were proposed as potential candidate genes of soybean yield at the R6 stage. Conclusion These results will be benefcial for understanding the genetic basis of soybean yield at the R6 stage and facilitating the pyramiding of favourable alleles for future high-yield breeding by marker-assisted selection in vegetable soybean.

Cardanol with a Covalently Attached Organophosphate Moiety as a Halogen-Free, Intrinsically Flame-Retardant PVC Bio-Plasticizer

Delong Hou,Songhang Wang,Jinming Chang,Zhou Xu,Qi Zeng,Zhonghui Wang,Yongcheng Yang,Jun Yan,Yi Chen 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8

Plasticizers that enable flexible polyvinyl chloride (PVC) are usually combustible, restricting the application ofPVC in fire-prone scenarios. In this context, intrinsically flame-retardant plasticizers displaying dual function continue to bethe focus of intensive research. Despite their efficiency, the majority of these dual-functional plasticizers previously reportedcontain halogen elements, which, once ignited, emanate toxic and potentially carcinogenic substances, along with toxic gasesand smoke, polluting the environment, damaging the biota, and threatening human health. Here, we report a strategy to obtaina halogen-free, intrinsically flame-retardant PVC bio-plasticizer that harnesses the phenolic hydroxyl of naturally occurringcardanol and covalent attachment of an organophosphate moiety. When combined with di-(2-ethylhexyl) phthalate (DOP),the organophosphate-containing cardanol is qualified as a co-plasticizer, while endowing the PVC materials with flameretardancy. Unlike inorganic flame-retardants, the engineered cardanol is compatible with PVC such that the mechanicalproperties of the PVC materials are not compromised. The rationale underlying the present effort may provide guidance fordeveloping sustainable alternatives to halogen-containing plasticizers to address the sustainability challenge now confrontingPVC industry.

Aircraft Recognition from Remote Sensing Images Based on Machine Vision

Lu Chen,Liming Zhou,Jinming Liu 한국정보처리학회 2020 Journal of information processing systems Vol.16 No.4

Due to the poor evaluation indexes such as detection accuracy and recall rate when Yolov3 network detects aircraft in remote sensing images, in this paper, we propose a remote sensing image aircraft detection method based on machine vision. In order to improve the target detection effect, the Inception module was introducedinto the Yolov3 network structure, and then the data set was cluster analyzed using the kmeans algorithm. In order to obtain the best aircraft detection model, on the basis of our proposed method, we adjusted the network parameters in the pretraining model and improved the resolution of the input image. Finally, our methodadopted multiscale training model. In this paper, we used remote sensing aircraft dataset of RSODDataset to do experiments, and finally proved that our method improved some evaluation indicators. The experiment of this paper proves that our method also has good detection and recognition ability in other ground objects.

Automorphisms of the zero-divisor graph over $2\times 2$ matrices

Xiaobin Ma,Dengyin Wang,Jinming Zhou 대한수학회 2016 대한수학회지 Vol.53 No.3

The zero-divisor graph of a noncommutative ring $R$, denoted by $\Gamma(R)$, is a graph whose vertices are nonzero zero-divisors of $R$, and there is a directed edge from a vertex $x$ to a distinct vertex $y$ if and only if $xy=0$. Let $R=M_{2}(F_q)$ be the $2\times 2$ matrix ring over a finite field $F_q$. In this article, we investigate the automorphism group of $\Gamma(R)$.

AUTOMORPHISMS OF THE ZERO-DIVISOR GRAPH OVER 2 × 2 MATRICES

Ma, Xiaobin,Wang, Dengyin,Zhou, Jinming Korean Mathematical Society 2016 대한수학회지 Vol.53 No.3

The zero-divisor graph of a noncommutative ring R, denoted by ${\Gamma}(R)$, is a graph whose vertices are nonzero zero-divisors of R, and there is a directed edge from a vertex x to a distinct vertex y if and only if xy = 0. Let $R=M_2(F_q)$ be the $2{\times}2$ matrix ring over a finite field $F_q$. In this article, we investigate the automorphism group of ${\Gamma}(R)$.

A novel experimental research on vibration characteristics of the running high-speed motorized spindles

Wentao Shan,Xiaoan Chen,Ye He,Jinming Zhou 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.8

Because of the complicated running condition and many unpredicted factors such as unmodelled dynamics and external disturbances,the fault analysis of the high-speed motorized spindle is proved difficult. In this paper, a novel experimental method is proposed to research the vibration characteristics of the running high-speed motorized spindle. The method consists of four steps. Firstly, the vibration signal measurement and processing system are built according to data collector and signal analysis software, and then, the vibration signal of the spindle extracted from sophisticated experimental environment is studied by using harmonic wavelet transform for its advantages,such as ultra-narrow band, high resolution detection and ability of extracting weak signal. After that, local frequency domain zooming technique of harmonic wavelet packet is employed to study the vibration spectrum of the spindle at eight different rotating speeds. Furthermore, the axis orbit of the rotor is purified successfully, which can serve as verification basis for subsequent on-site fault diagnosis. Finally, a comparative analysis of eight different vibration signals under the same load but different speeds condition is carried out, the spectral components are classified into two types: the repeated ones and the regular ones. The accordance between experimental results and theoretical analysis suggests that the proposed method in this paper is effective.