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Synthesis and characterization of superhydrophobic magnesium oxysulfate whiskers

Particuology 2023年第7期78卷 111-121页

作者： Zhenying Yao Lu Gong chunmei zhu Xin Lian Bai He Shenghui Tian Bo Yui School of Chemistry and Chemical Engineering Chongqing University of Science and TechnologyChongqing401331China Provincial and Ministerial Co-Constructive of Collaborative Innovation Center for MSw Comprehensive Utilization School of Metallurgy and Materials EngineeringChongqing University of Science and TechnologyChongqing401331China

Superhydrophobic materials have attracted much attention for their special wettability.In this study.magnesium oxysulfate(MOS)whiskers were surface modified by vinyltrimethoxysilane(VTMS)and prepared as superhydrophobic materials,which are expected to be widely used in self-cleaning,corro-sion prevention,and oil-water separation.The factors of silane concentration,hydrolysis time,reaction temperature,and reaction time were investigated.The superhydrophobic Mos whiskers were synthe-sized.SEM and XRD turned out that there were no apparent changes in the morphology and crystalli-zation behavior of whiskers before and after modification,while the surface was uniformly coated with a layer of non-crystal material,and the surface of the whiskers employed a chemical bond Si-O-Mg covalently connected.The thermogravimetric analysis ultimately demonstrated that surface modification was beneficial to the improvement of the thermal stability of MoS whiskers.Superhydrophobic MoS whiskers showed good compatibility with organic solvents through oil-water separation experiments,and demonstrated excellent self-cleaning performance.The methodology for the surface treatment of Mos whiskers to prepare superhydrophobic whiskers in this work may be extended for other whiskers or fillers,which may be promising for the preparation of superhydrophobic materials.

关键词： Magnesium oxysulfate whiskers Surface modification Vinyltrimethoxysilane Superhydrophobicity

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Phosphorylation of OsFD1 by OsCIPK3 promotes the formation of RFT1-containing florigen activation complex for long-day flowering in rice

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Molecular Plant 2021年第7期14卷 1135-1148页

作者： Qiang Peng chunmei zhu Tao Liu Shuo Zhang Shijing Feng Changyin Wu National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene Research(Wuhan)Huazhong Agricultural UniversityWuhan 430070China Guizhou Rice Research Institute Guizhou Academy of Agricultural SciencesGuiyang 550006China

Heading date is a critical trait that determines the regional adaptability and grain productivity of many crops.Although rice is a facultative short-day plant,its domestication led to the Ghd7-Ehd1-Hd3a/RFT1 pathway for adaptation to long-day conditions(LDs).The formation of the"florigen activation complex"(FAC)containing florigen Hd3a has been characterized.However,the molecular composition of the FAC that contains RFT1 for long-day flowering is unclear.We show here that RFT1 forms a ternary FAC with 14-3-3 proteins and OsFD1 to promote flowering under LDs.We identified a calcineurin B-like-interacting protein kinase,OsCIPK3,which directly interacts with and phosphorylates OsFD1,thereby facilitating the localization of the FAC to the nucleus.Mutation in OsCIPK3 results in a late heading date under LDs but a normal heading date under short-day conditions.Collectively,our results suggest that OsCIPK3 phosphorylates OsFD1 to promote RFT1-containing FAC formation and consequently induce flowering in rice under LDs.

关键词： rice heading date florigen activation complex OsCIPK3 phosphorylation

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奇台县农产品质量安全检验检测现状及对策建议

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现代食品 2024年第11期30卷 106-108页

作者：祝春梅奇台县农业农村局新疆奇台831800

农产品质量安全检验检测工作是确保农产品质量安全的必要手段。本文概述奇台县农产品生产情况和农产品质量安全检验检测机构运行情况,分析检验检测过程中存在的问题,并提出了相应的对策建议。

关键词：农产品质量安全检验检测对策建议

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ZnO@MOF@PANI core-shell nanoarrays on carbon cloth for high-performance supercapacitor electrodes

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Journal of Energy Chemistry 2019年第8期28卷 124-131,I0005页

作者： chunmei zhu Ying He Yijun Liu Natalia Kazantseva Petr Saha Qilin Cheng Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and TechnologyShanghai 200237 China Centre of Polymer Systems Tomas Bata University in Zlinnam. T. G. Masaryka 5555 760 01 Zlin Czechia

Hierarchical ZnO@metal-organic framework @polyaniline(ZnO@MOF@PANI) core-shell nanorod arrays on carbon cloth has been fabricated by combining electrodeposition and hydrothermal method. Well-ordered Zn O nanorods not only act as a scaffold for growth of MOF/PANI shell but also as Zn source for the formation of MOF. The morphology of ZnO@MOF@PANI composite is greatly influenced by the number of PANI electrodeposition cycles. Their structural and electrochemical properties were characterized with different techniques. The results indicate that the Zn O@MOF@PANI with 13 CV cycles of PANI deposition demonstrates the maximum specific capacitance of 340.7 F g-1 at 1.0 A g-1, good rate capability with84.3% capacitance retention from 1.0 to 10 A g-1 and excellent cycling life of 82.5% capacitance retention after 5000 cycles at high current density of 2.0 A g-1. This optimized core-shell nanoarchitecture endows the composite electrode with short ion diffusion pathway, rapid ion/electron transfer and high utilization of active materials, which thus result in excellent electrochemical performance of the ternary composite.

关键词： Metal-oragnic framework Polyaniline Core-shell nanoarrays Supercapacitor Electrochemical properties

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Expression of estrogen receptor alpha,nerve growth factor,interleukin-2,and androgen receptor in the cerebellum of ovariectomized rats following soybean isoflavone treatment

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Neural Regeneration Research 2009年第12期4卷 965-972页

作者： Zhengli Chen chunmei zhu Qihui Luo Kangcheng Pan Anchun Cheng College of Veterinary Medicine Sichuan Agricultural University Ya'an 625014 Sichuan Province China Experimental Animal Engineering Center Sichuan Agricultural University Ya'an 625014 Sichuan Province China

BACKGROUND： Studies have shown that estrogen receptor alpha （ERα）, nerve growth factor （NGF）, interleukin-2 （IL-2）, and androgen receptor （AR） expression in the cerebellum decreases when estrogen levels decrease in vivo. Soybean isoflavone, a type of non-steroid estrogen with similar molecular structure and function to estradiol, exhibits estrogen-like characteristics. OBJECTIVE： To investigate the effects of various doses of soybean isoflavone on expression of ERa, NGF, IL-2, and AR in the cerebellum of ovariectomized rat, and to determine whether there is a dose-dependent effect.DESIGN, TIME AND SETTING： Controlled trial at the cellular and molecular level. The study was performed at the Experimental Animal Engineering Center, College of Veterinary Medicine, Sichuan Agricultural University from July 2006 to May 2008. MATERIALS： Soybean isoflavone, comprised of daidzin, genistein and isoflavone, was provided by Taiyuan Yuantai Biochemical Industry, China. The ERα, NGF, IL-2, and AR in situ hybridization kit, rabbit anti-rat ERa, NGF, IL-2, and AR monoclonal antibodies, and SABC kit were purchased from Wuhan Boster Biological Technology, China. METHODS： A total of 50 female, Sprague Dawley rats, aged 3 months, were randomly assigned to 5 groups, with 10 animals in each group. With the exception of the sham-operation group （abdominal cavity opening alone）, all rats underwent bilateral ovariectomy. At 14 days after surgery, rats in the high-, middle-, and low-dose soybean isoflavone groups were subcutaneously injected with 1.5, 1.0, and 0.5 mg/kg soybean isoflavone, respectively, every 2 days for 6 consecutive weeks. Rats in the sham-operation and ovariectomized groups were subcutaneously injected with absolute alcohol （0.5 mL/kg）. MAIN OUTCOME MEASURES： Expression levels and distribution of ERα, NGF, IL-2, and AR in the cerebellum were detected by immunohistochemistry and in situ hybridization. RESULTS： Compared with the sham-operation group, immunoreactive products and hybridization signals of ERa, NGF, IL-2, and

关键词： soybean isoflavone estrogen receptor alpha nerve growth factor interleukin-2 androgen receptor cerebellum

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Application of Human Adenovirus Genotyping by Phylogenetic Analysis in an Outbreak to Identify Nosocomial Infection

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Virologica Sinica 2021年第3期36卷 393-401页

作者： Chuanyu Yang chunmei zhu Yuan Qian Jie Deng Baoyuan Zhang Runan zhu Fang Wang Yu Sun Dongmei Chen Qi Guo Yutong Zhou Lei Yu Ling Cao Linqing Zhao Laboratory of Virology Beijing Key Laboratory of Etiology of Viral Diseases in ChildrenCapital Institute of PediatricsBeijing 100020China Department of Respiratory Medicine Affiliated Children's HospitalCapital Institute of PediatricsBeijing 100020China Hospital Infection-Control Department Affiliated Children’s HospitalCapital Institute of PediatricsBeijing 100020China

Nosocomial infections are common in pediatric patients and can be fatal in infants and immunocompromised patients. In September 2018, a high positive rate of human adenovirus HAdV was occurred among hospitalized children in the Children's Hospital Affiliated to the Capital Institute of Paediatrics in Beijing. To investigate whether this outbreak of HAdV was related to nosocomial infections or the result of community infections, we collected respiratory specimens from patients with acute respiratory infections in a respiratory ward during June to December 2018, and screened for respiratory viruses. Among 1,840 cases included, 95(5.2%, 95/1840) were positive for HAdV and 81 were genotyped based on phylogenetic analysis, including seven as HAdV-1(8.6%), 30 HAdV-3(37.0%), two HAdV-6(2.5%), and 42 HAdV-7(51.9%). More HAdV-positive samples were collected in August(4.7%, 12/255), September(15.0%, 41/274) and October(6.9%, 17/247), with a peak in September 2018. By combining the results of HAdV phylogenetic analysis with clinical data of patients, there were 77 cases(4.2%, 77/1840;81.1%, 77/95) excluded from nosocomial infections, eight cases representing possible infections transmitted by visitors or attending parents, three cases without sequences that might have been due to infection transmitted by roommates positive for HAdV, one case of a roommate without an HAdV sequence, and six cases that shared highly homologous sequences with those of their roommates, for which nosocomial infections might be considered. In conclusion, genotyping of HAdVs based on phylogenetic analysis combined with clinical information provides a powerful method to distinguish nosocomial infections from community acquired infection, especially when tracing the origins of nosocomial infections.

关键词： Acute respiratory tract infection Human adenovirus(HAdV) Phylogenetic analysis Nosocomial infection

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Learning background restoration and local sparse dictionary for infrared small target detection

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Optoelectronics Letters 2024年第7期20卷 437-448页

作者： HE Yue ZHANG Rui XI chunmei zhu Hu School of Communications and Information Engineering Nanjing University of Posts and Telecommunications

This paper proposes a method for learning background restoration for infrared small target detection, employing a local sparse dictionary alongside an equalized structural texture representation. The method is specifically designed for the detection of small infrared targets, accommodating various levels of brightness, spatial size, and intensity. Our proposed model intelligently combines global low-rankness and local sparsity to estimate the rank of the background tensor, leveraging spatial and structural information to overcome the limitations posed by insufficient detailed texture knowledge. Subsequently, a structural texture representation, combining local gradient maps and local intensity maps, is applied to emphasize small objects. By comparing our method with nine advanced and representative approaches and quantifying the comparison using various metrics, the experimental results indicate that our proposed method has achieved favorable outcomes in both quantitative assessments and visual results.

关键词： A

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Mutations in Caprine DGAT1 and STAT5A Genes were Associated with Milk Production Traits

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Engineering（科研） 2012年第10期4卷 30-34页

作者： Xiaopeng An Jinxing Hou Haibo Zhao chunmei zhu Quanmei Yan Yuxuan Song Jiangang Wang Binyun Cao College of Animal Science and Technology Northwest A&F University Yangling Shaanxi P.R. China

In this study, polymorphisms of the DGAT1 andSTAT5A genes were detected in 528 individuals from Xinong Saanen and Guanzhong goat breeds by PCR-RFLP, PCR-SSCP and DNA sequencing methods. Three allelic variants were identified: DQ380250: g.407_408insC, AJ237937: g.6798C>T and g.6852C>T in both breeds. At g.407_408insC locus, the frequencies of C1 allele were 0.79–0.85, and frequencies of C2 allele were 0.21–0.15. At g.6852C>T locus, frequencies of C3 allele were 0.70–0.72, and frequencies of T3 allele were 0.30–0.28. Compared with goats with C1C1 and C3C3, those with C1C2 and C3T3 genotypes had significant effects on milk yield and fat percentage (P<0.05), respectively. The result showed that does with C1C1C3T3 and C1C2C3T3 had higher milk yield than those with C1C2C3C3 (P < 0.05). In addition, the combined effect of C1C2C3C3 on milk fat percentage was the highest in comparison with other combination genotypes (P<0.05).

关键词： Dairy Goat Milk Production Traits Fat Percentage Pedigree

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Metal–ligand interfaces for well-defined gold nanoclusters

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Science China Chemistry 2024年第3期67卷 806-823页

作者： Dan Yang Yating Wu Zhaotong Yuan chunmei Zhou Yihu Dai Xiaoyue Wan Yan zhu Yanhui Yang Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech UniversityNanjing 211816China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China College of Material and Chemical Engineering Minjiang UniversityFuzhou 350108China

Ligand engineering for well-defined gold nanoclusters(Au NCs) is getting more extensive attention. Organizing the Au-ligand interfaces on gold NCs can achieve the structural and functional control. This review focuses on the Au-ligand interfaces including gold-phosphorus(Au-P), gold-sulfur(Au-S), gold-selenium(Au-Se), gold-carbon(Au-C), and gold-nitrogen(Au-N), derived from the bonding between Au atoms and the different ligands(e.g., organic phosphine, thiolate, selenolate, alkynyl,n-heterocyclic carbene and nitrogenous ligands). The formation mechanism of Au-ligand interfaces is well discussed. In addition, the effects of Au-ligand interfaces on the stability, optical property, and catalysis are also presented. We hope the advances in this research area can boost the development of Au NC sciences.

关键词： Au nanoclusters well-defined structures metal–ligand interfaces formation mechanism structure–property correlation

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2019—2021年南昌大学第一附属医院医院感染特征分析

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中国当代医药 2024年第17期31卷 108-111页

作者：程涛傅文山康秀华刘珉玉周芸向天新朱春梅江西省上饶市人民医院呼吸与危重症医学科江西上饶334000 南昌大学第一附属医院感染控制处江西南昌330006

目的分析南昌大学第一附属医院的医院感染特征,为进一步推动医院感染防控工作提供依据。方法收集2019—2021年南昌大学第一附属医院所有住院患者资料进行回顾性分析,对医院感染发生情况进行比较。结果2020年和2021年医院感染发生率低于2... 详细信息

目的分析南昌大学第一附属医院的医院感染特征,为进一步推动医院感染防控工作提供依据。方法收集2019—2021年南昌大学第一附属医院所有住院患者资料进行回顾性分析,对医院感染发生情况进行比较。结果2020年和2021年医院感染发生率低于2019年,差异有统计学意义(P<0.017);医院感染部位主要集中在呼吸道和血液;除胃肠道部位外,2020年和2021年其余部位感染发生率均低于2019年,差异有统计学意义(P<0.017)。2019—2021年医院感染病原体均以鲍曼不动杆菌和肺炎克雷伯菌为主。结论戴口罩、加强消毒及手卫生等相关卫生措施在一定程度上降低发生医院感染的风险,医院应根据医院感染的实际特征及变化趋势及时调整并完善医院感染防控策略与措施。

关键词：医院感染发生率特征卫生相关防控

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