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NEW CONSTRUCTIONS OF LDPC CODES BASED ON CIRCULANT PERMUTATION MATRICES FOR AWGN CHANNEL

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Journal of Electronics(China) 2014年第2期31卷 85-91页

作者： Song zixi zhang Lijun School of Electronic and Information Engineering Beijing Jiaotong University

Two new design approaches for constructing Low-Density Parity-Check(LDPC) codes are *** is used to design regular Quasi-Cyclic LDPC(QC-LDPC) codes with girth at least *** other is used to design irregular LDPC *** of their parity-check matrices are composed of Circulant Permutation Matrices(CPMs).When iteratively decoded with the Sum-Product Algorithm(SPA),these proposed codes exhibit good performances over the AWGN channel.

关键词： Circulant Permutation Matrices(CPMs) Euclidean geometry Error floor Irregular LDPC codes Quasi-cyclic

眼周注射联合面部微针导入胶原蛋白改善皮肤光老化的疗效观察

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中国美容医学 2023年第11期32卷 95-98页

作者：杨荣丽罗锦添穆欣张子茜许璐洁西安交通大学第一附属医院皮肤科陕西西安710061 中山大学中山医学院广东广州510080 西安交通大学医院皮肤科陕西西安710048

目的:观察眼周注射联合面部微针导入胶原蛋白在改善皮肤光老化中的疗效。方法:纳入2021年6月-2022年3月于笔者医院要求改善面部皮肤光老化的15例就医者。给予就医者眼周注射联合面部微针导入胶原蛋白治疗,每月1次,共治疗3次。分别于治... 详细信息

目的:观察眼周注射联合面部微针导入胶原蛋白在改善皮肤光老化中的疗效。方法:纳入2021年6月-2022年3月于笔者医院要求改善面部皮肤光老化的15例就医者。给予就医者眼周注射联合面部微针导入胶原蛋白治疗,每月1次,共治疗3次。分别于治疗前及治疗3次后1个月,就医者通过整体美学改善量表对疗效进行主观评价,使用VISIA图像分析对就医者眼周皱纹、毛孔、纹理和棕色斑指标进行定量评价。结果:治疗后,就医者主观评价治疗后对面部皮肤纹理和皮肤肤色改善明显,VISIA图像分析结果显示眼周皱纹、纹理和棕色斑明显改善(P0.05),治疗无明显不良反应。结论:眼周注射联合面部微针导入胶原蛋白,能够明显减少眼周皱纹,具有较好的改善肤色和皮肤质地的效果,可用于皮肤光老化改善的治疗。

关键词：微针胶原蛋白眼周皱纹皮肤光老化肤质改善疗效观察

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建设国家应急广播体系的实践与思考

中国有线电视 2021年第11期 1143-1145页

作者：张紫曦汤俊峰宋承岩孙欣路宇晨北京数码视讯科技股份有限公司北京100089

应急广播是国家应对突发公共事件,以广播的音频或视频的方式向人民群众传播消息,通过对国家应急广播体系的实践建设研究,提出未来应急广播体系建设的建议。

关键词：应急广播体系建设公共事件

Enhancement of tribological properties in siliconized graphite via hierarchically hybrid SiC/C composite

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Progress in Natural Science:Materials International 2021年第2期31卷 255-263页

作者： Zilin Li Zhaowei Zhu Xianglong Yu Kai Li zixi Wang Zezhao zhang Yuming Wang State Key Laboratory of Tribology Department of Mechanical Engineering Tsinghua University Institute of Chemical Defense Academy of Military Sciences

This study aims to investigate tribological properties in a siliconized graphite(СГ-П-0.5) and hierarchically hybrid Si C/C composites at the load ranging from 10-40 N under dry air/water lubrication conditions. A feasible liquid silicon infiltration(LSI) was used to fabricate the Si C/C composites. Morphology and phase identification of two materials were characterized and analyzed by scanning electron microscope(SEM) and energy dispersive spectrometer(EDS). An image feature extraction was used to post-process the data of wear test, further to gain the wear properties of the samples. The results demonstrated that a lower coefficient of friction(COF) and wear rate can be achieved in the LSI Si C composites than that in the sample of СГ-П-0.5. Both COF decreased under waterlubricated conditions, compared with that under the dry air lubrication. The excellent tribological properties in two materials can be due mainly to the microstructure of the СГ-П-0.5 sample, showing much more graphite and Si dispersed on the matrix. The СГ-П-0.5 sample indicated the typical oxidative wear mechanism, whereas, the sample of LSI Si C demonstrated the combined oxidative and fatigue wear. This finding can provide a promising new siliconized graphite materials for ceramic rolling bearings.

关键词： Siliconized graphite Coefficient of friction Surface microstructure Feature extraction

Reversed configuration of photocatalyst to exhibit improved properties of basic processes compared to conventional one

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Science China Chemistry 2020年第6期63卷 771-776页

作者： Juhong Lian Yu Qi Yunfeng Bao zixi Yin Yang zhang Nengcong Yang Naijia Guan Shengye Jin Landong Li Fuxiang zhang State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023China School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials(iChEM) Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Performances of semiconductor photocatalysts are integrally determined by efficiencies of basic processes such as light absorption,charge separation and surface catalysis,but conventional configurations of photocatalysts normally suffers from the competition of light absorption originating from cocatalyst deposition and limited interface charge separation between the photocatalyst and *** we give the first proof-of-concept illustration that a reversed configuration of photocatalysts with a core/shell structure of microsized Mo2N cocatalysts and nanosized CdS photocatalysts,which exhibits superior solar hydrogen production to the conventional configuration with nanosized Mo2N cocatalysts deposited on the surface of CdS *** is revealed that the reversed configuration outperforms the conventional one in all areas of light absorption,charge separation and surface ***,the special core/shell structure introduced here can well avoid the competition of light absorption by cocatalysts and make an effective confinement effect to promote the surface catalysis of *** finding provides an alternative strategy to improve performances of photocatalysts.

关键词： photocatalyst nitride semiconductor renewable hydrogen core/shell

Tuning the crystallinity of MnO_(2) oxidant to achieve highly efficient pollutant degradation

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Chinese Chemical Letters 2023年第1期34卷 403-409页

作者： Min Zhong Meng Li zixi Fan Wansong Huang Huiru Hao Zhixuan Xia Qian zhang Haojin Peng Yibo zhang School of Civil Engineering&Architecture Wuhan University of TechnologyWuhan 430070China Department of Chemical and Environmental Engineering University of CincinnatiCincinnatiOH 45221United States Hubei Jianke International Construction Co. Ltd.Wuhan 430070China School of Urban Construction Wuchang Shouyi UniversityWuhan 430064China

Manganese dioxide(MnO_(2)), a commonly find oxidant in both natural environment and industrial application, plays a crucial role for various organic compound degradation. Tuning the MnO_(2) crystal structure is a cost-effective strategy to boost the oxidation reactions, where the challenge remains due to lacking indepth investigation of the crystal properties. Herein, MnO_(2) with different crystalline structures(x-MnO_(2))including α-, β-and δ-was prepared through the hydrothermal synthesis for a typical organic pollutant removal. The structural and degradation analysis indicated that the oxidation capacity was originated from Mn^(3+) and oxygen vacancies(OVs). The intrinsic relationships between oxidation performance and other physiochemical properties such as morphology and electrochemistry were thoroughly discussed,and positive correlations between oxidation capacity and electrochemical properties were found which eventually led to excellent oxidation performance via modulating the above-mentioned properties. Moreover, the K^(+) content was determined to be the most crucial role in manipulating the structure *** work offers a crystal-level insight into the relationship between the crystal structure and oxidative property, promoting rational design of highly efficient oxidant.

关键词： MnO_(2)polymorphs Oxidation Mn^(3+) Oxygen vacancy Intrinsic relationship K^(+)content

丙泊酚激活线粒体凋亡通路诱导乳头状甲状腺癌TPC-1细胞凋亡和生长阻滞

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西部医学 2021年第7期33卷 976-981页

作者：张子曦王永顺向洪聪肖志波夏学鑫蔡志强湖北江汉油田总医院麻醉科湖北潜江433124 潜江市中心医院麻醉科湖北潜江433100 武汉科技大学附属医学院麻醉科湖北武汉430064

目的探讨丙泊酚(PPF)通过线粒体凋亡通路对乳头状甲状腺癌TPC-1细胞凋亡和生长的影响。方法分别采用0、12.5、25、50μM丙泊酚处理TPC-1细胞,将细胞随机分为PPF 0μM组、PPF 12.5μM组、PPF 25μM组和PPF 50μM组进行后续实验。BrdU染... 详细信息

目的探讨丙泊酚(PPF)通过线粒体凋亡通路对乳头状甲状腺癌TPC-1细胞凋亡和生长的影响。方法分别采用0、12.5、25、50μM丙泊酚处理TPC-1细胞,将细胞随机分为PPF 0μM组、PPF 12.5μM组、PPF 25μM组和PPF 50μM组进行后续实验。BrdU染色检测细胞增殖;克隆形成法检测细胞生长;流式细胞仪检测细胞凋亡;流式分选检测线粒体膜电位;蛋白免疫印迹检测Ki67、PCNA、Bcl-2、Bax、Caspase-3、Caspase-9、c-Myc蛋白表达水平;试剂盒检测SOD、MDA、GSH含量。结果与PPF 0μM组相比较,PPF 25μM组和PDF 50μM组BrdU阳性细胞数显著降低(P<0.05),克隆形成率显著降低(P<0.05),Ki67、PCNA蛋白水平显著降低(P<0.05),细胞凋亡率显著升高(P<0.05),细胞线粒体膜电位明显降低,Bax/Bcl-2、cleaved caspase-3/Caspase-3、cleaved caspase-9/Caspase-9比值显著升高(P<0.05),c-Myc蛋白水平显著降低(P<0.05),SOD含量显著降低(P<0.05),MDA、GSH含量显著升高(P<0.05)。结论丙泊酚激活线粒体凋亡通路诱导乳头状甲状腺癌TPC-1细胞凋亡和生长阻滞。

关键词：乳头状甲状腺癌丙泊酚线粒体凋亡通路氧化应激

Genome-wide characterization of graft-transmissible mRNA-coding P450 genes of cucumber(Cucumis sativus L.)

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Horticultural Plant Journal 2023年第2期9卷 250-260页

作者： Tao Wang Xiaohong Lu Chenggang Xiang Xiaojun Li Wenqian Liu QingWang zixi Liu Lihong Gao Wenna zhang Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops China Agricultural UniversityBeijing100193 China College of Life Science and Technology HongHe UniversityMengziYunnan661199 China

P450(cytochrome P450)is a supergene family,which is involved in various metabolic pathways in *** on previous study,we found some of cucumber P450 mRNAs were systemic mobile in cucumber/pumpkin ***,the reason that why P450 mRNAs were endorsed as signaling,and what specific motif(s)did they harbored is not clear ***,we first identified 221 CsaP450 genes in cucumber genomewide *** with graft-transmissiblemRNAs datasets in cucumber,we elucidated 15mobile-CsaP450-coding genes,of which 5 and 10 belonged to A-type and non-A type *** with Arabidopsis and pumpkin(Cucubit moschata)graft-induced-transmissible P450 mRNAs,a phylogenetic treewas constructed and divided into eight clans by usingmultiple-sequence *** ontology(GO)enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG)annotations indicated that the expression patterns of the mobile-mRNA-coding CsaP450 genes in different tissues of cucumber was specifically enriched in oxidoreductase activity and secondary metabolic *** structures and motifs of these 15 mobile-mRNA-coding CsaP450 genes and their types of regulatory elements told that the proportion of CU-rich motifs was higher than nonmobile-mRNA-coding CsaP450 *** integrated analysis of mobility direction and mRNA abundance of 15 mobilemRNA-coding CsaP450 genes allowed to conclude that there was rarely relationship between *** study provided a new insight into the relationship between the motifs and functional characterization of mobile-mRNA-coding P450 genes of cucumber in genome-wide levels.

关键词： Cucumis sativus Genome-wide Cytochrome P450 mRNA mobility Phylogeny CU-rich motif

Beware of the serious harm of veterinary drug poisoning:a case report

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World Journal of Emergency Medicine 2024年第2期15卷 153-155页

作者： Ping Dai Jin Sun Tongyue zhang Zhiqiang Zhou zixi Wen Tianzi Jian Aerbusili Genjiafu Baotian Kan Xiangdong Jian Department of Poisoning and Occupational Diseases Emergency MedicineQilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012China Emergency Department Affiliated the Jianhu Clinical Medical College of Yangzhou UniversityYancheng 224700China Department of Occupational and Environmental Health School of Public HealthCheeloo College of MedicineShandong UniversityJinan 250012China School of Nursing and Rehabilitation Cheeloo College of MedicineShandong UniversityNursing Theory&Practice Innovation Research Center of Shandong UniversityJinan 250012China Department of Geriatric Medicine Qilu HospitalNursing Theory Innovation and Research Center of Shandong UniversityCheeloo College of MedicineShandong UniversityJinan 250012China

Veterinary drugs are substances(including pharmaceutical feed additives)used to prevent,treat,and diagnose diseases or regulate the physiological functions of *** drug poisoning in humans is relatively rare both in China and the rest of the ***,we report a case of death from veterinary drug poisoning from ***-closantel is a broad-spectrum antiparasitic drug,which has high efficacy against a variety of trematodes and nematodes.

关键词： drug drugs diseases