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Effect of cinnamaldehyde on Rhizopus stolonifer and on the conservation of sweet potato

Food Quality and Safety 2024年第1期8卷 212-225页

作者：陈晨薛智超 Penta Pristijono John B.Golding 陈刚李永新杨虎清 College of Food and Health Zhejiang A&F UniversityHangzhouChina Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine Zhejiang A&F UniversityHangzhouChina School of Environmental and Life sciences University of NewcastleOurimbahNSWAustralia NSW Department of Primary Industries OurimbahNSWAustralia

Objectives:Rhizopus stolonifer,which causes soft rot of sweet potato,has resulted in substantial loss of economy *** and Methods:The antifungal effect and mechanism of cinnamaldehyde(CIN)against *** were explored by biochemical analysis and RNA-sequencing in this research,and the edible quality of CIN-treated sweet potato was ***:The results showed that CIN inhibited the growth of *** and reduced the incidence of soft rot in sweet potato at a minimum inhibitory concentration of 1000μL/*** damage of the cell walls of *** by CIN was associated with the upregulation of *** leakage and malondialdehyde content increased following CIN-treatment,which was correlated with increased reactive oxygen species levels and decreased catalase *** of ERG genes and oxidative stress-related genes following CIN treatment was associated with impaired cell membrane *** mitochondrial structure of *** was damaged by CIN treatment resulting in decreased respiration rates and ATP production,which was correlated with lower expression levels of IDH1,COX4,and ***:Our research suggests that the inhibition of CIN on *** was related to the disruption of its normal gene expression network,and CIN maintained the nutritional and edible quality of sweet *** study provides valuable insights into the antifungal mechanism of CIN on *** and the maintenance of root quality,which contributes to the effcient use of CIN for controlling soft rot in sweet potato.

关键词： Ipomoea batatas soft rot cinnamaldehyde antifungal mechanism transcriptome

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Analysis and Characterization of the GABA Transaminase and Succinate Semialdehyde Dehydrogenase Genes in the Microalga Isochrysis zhanjiangensis in Response to Abiotic Stresses

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Journal of Ocean University of China 2024年第3期23卷 775-785页

作者： TIAN Jiaojiao ZHANG Lin LU Xinyue YE Lingzhi WU Yuanyuan CHEN Deshui CAO Jiayi JIANG Jiaxin XU Jilin YAN Xiaojun Key Laboratory of Marine Biotechnology of Zhejiang Province School of Marine SciencesNingbo UniversityNingbo 315211China Key Laboratory of Aquacultural Biotechnology Ministry of Education Ningbo UniversityNingbo 315211China Laizhou Bay Marine technology Co. Ltd.Yantai 261400China Fujian Dalai Seed science and technology Co. Ltd.Ningde 352101China

Gamma-aminobutyric acid(GABA),widely existing in different organisms,is rapidly accumulated in plants in response to environmental *** main biosynthesis and degradation pathways of GABA constitute the GABA shunt,which is tied to the tricarboxylic acid(TCA)*** transaminase(GABA-T)and succinate semialdehyde dehydrogenase(SSADH)are two essential enzymes for the GABA degradation *** there are abundant studies on GABA shunt in higher plants at the physiological and genetic levels,research on its role in microalgae remains *** study aimed at exploring the function of GABA-T and SSADH genes in Isochrysis zhanjiangensis,an important diet microalga,under different *** cloned two GABA-T genes,IzGABA-T1 and IzGABA-T2,and one SSADH gene IzSSADH from Isochrysis zhanjiangensis and conducted heterologous expression *** results showed that the overexpression of IzGABA-T1 or IzGABA-T2 enhanced the survival rates of yeast transformants under heat or NaCl stress,while the overexpression of IzSSADH improved yeast tolerance to NaCl stress but had no obvious effect on heat ***,the results of quantitative real-time polymerase chain reaction(qPCR)showed that IzGABA-T1 transcription increased in the HT(salinity 25,35℃)and LS(salinity 15,25℃)*** 24 h,the IzGABA-T2 transcriptions increased in the HT,LS,and HS(salinity 35,25℃)groups,but their transcription levels decreased in all groups at 48 *** transcription increased in the LS *** results suggest that IzGABA-T1,IzGABA-T2,and IzSSADH are associated with temperature and salinity stresses and possess a certain preference for different stresses.

关键词： abiotic stress GABA heterologous expression Isochrysis zhanjiangensis transcription

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Enhancement in the Hg^(0) oxidation efficiency and sulfur resistance of CuCl_(2)-modified MnO_(x)-CeO_(x) nanorod catalysts

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Journal of Zhejiang University-science A(Applied Physics & Engineering) 2024年第8期25卷 680-686页

作者： Shujie GAO Yongjin HU Zhichang JIANG Xiaoxiang WANG Dong YE Changxing HU College of Quality&Safety Engineering China Jiliang UniversityHangzhou 310018China Key Laboratory of Biomass Chemical Engineering of Ministry of Education Institute of Industrial Ecology and EnvironmentCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China School of Mechatronics and Energy Engineering Ningbo Tech UniversityNingbo 315100China

In this study,a series of CuCl_(2)-modified MnO_(x)-CeO_(x)nanorods were synthesized for the oxidation of Hg^(0).The addition of CuCl_(2)resulted in an enhancement in the catalyst’s Hg^(0)oxidation ability,and Hg^(0)oxidation efficiency reached>97%from 150 to 250°*** the MnO_(x)-CeO_(x)catalysts,Mn^(4+)played the role of the active species for Hg^(0)oxidization,but in the CuCl_(2)-doped catalysts Cl−also contributed to Hg^(0)oxidation,conferring the superior performance of these *** introduction of SO_(2) led to a decrease in the availability of Mn^(4+),and the Hg^(0)oxidation efficiency of MnO_(x)-CeO_(x)decreased from about 100%to about 78%.By contrast,CuCl_(2)-promoted samples maintained a Hg^(0)oxidation efficiency of about 100%during the SO_(2) deactivation cycle due to the high reactivity of Cl−.

关键词： Hg^(0)oxidation CuCl_(2)modification MnO_(x)-CeO_(x)nanorods Sulfur resistance O_(x)idation activity

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Study on synergistic leaching of potassium and phosphorus from potassium feldspar and solid waste phosphogypsum via coupling reactions

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Chinese Journal of Chemical Engineering 2024年第1期65卷 117-129页

作者： Chao Li Shizhao Wang Yunshan Wang Xuebin An Gang Yang Yong Sun School of Chemical Engineering and technology Hebei University of TechnologyTianjin 300130China National Engineering research Center of Green Recycling for Strategic Metal Resources Chinese Academy of SciencesBeijing 100190China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupWA 6027Australia Key Laboratory of Carbonaceous Wastes Processing and Process Intensification of Zhejiang Province The University of Nottingham Ningbo ChinaNingbo 315100China

To achieve the resource utilization of solid waste phosphogypsum(PG)and tackle the problem of utilizing potassium feldspar(PF),a coupled synergistic process between PG and PF is proposed in this *** study investigates the features of P and F in PG,and explores the decomposition of PF using hydrofluoric acid(HF)in the sulfuric acid system for K leaching and leaching of P and F in *** impact factors such as sulfuric acid concentration,reaction temperature,reaction time,material ratio(PG/PF),liquid–solid ratio,PF particle size,and PF calcination temperature on the leaching of P and K is systematically investigated in this *** results show that under optimal conditions,the leaching rate of K and P reach more than 93%and 96%,*** study using shrinking core model(SCM)indicates two significant stages with internal diffusion predominantly controlling the leaching of *** apparent activation energies of these two stages are 11.92 kJ·mol^(-1)and 11.55 kJ·mol^(-1),respectively.

关键词： Phosphogypsum Potassium feldspar Coupling reaction Leaching Waste treatment Kinetics

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Proton‑Prompted Ligand Exchange to Achieve High‑Efficiency CsPbI_(3) Quantum Dot Light‑Emitting Diodes

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Nano-Micro Letters 2024年第6期16卷 53-62页

作者： Yanming Li Ming Deng Xuanyu Zhang Lei Qian Chaoyu Xiang Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315300People’s Republic of China Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Zhejiang Provincial Engineering research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Faculty of Electrical Engineering and Computer science Ningbo UniversityNingbo 315211ZhejiangPeople’s Republic of China University of Nottingham ningbo China Ningbo 315100People’s Republic of China

CsPbI_(3)perovskite quantum dots(QDs)are ideal materials for the next generation of red light-emitting ***,the low phase stability of CsPbI_(3)QDs and long-chain insulating capping ligands hinder the improvement of device *** in-situ ligand replacement and ligand exchange after synthesis were often difficult to ***,we proposed a new ligand exchange strategy using a proton-prompted insitu exchange of short 5-aminopentanoic acid ligands with long-chain oleic acid and oleylamine ligands to obtain stable small-size CsPbI_(3)*** exchange strategy maintained the size and morphology of CsPbI_(3)QDs and improved the optical properties and the conductivity of CsPbI_(3)QDs *** a result,high-efficiency red QD-based light-emitting diodes with an emission wavelength of 645 nm demonstrated a record maximum external quantum efficiency of 24.45%and an operational half-life of 10.79 h.

关键词： CsPbI_(3) perovskite quantum dots Light-emitting diodes Ligand exchange Proton-prompted in-situ exchange

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State of the art in movement around a remote point:a review of remote center of motion in robotics

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Frontiers of Mechanical Engineering 2024年第2期19卷 1-28页

作者： Wuxiang ZHANG Zhi WANG Ke MA Fei LIU Pengzhi CHENG Xilun DING School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China ningbo Institute of technology Beihang UniversityNingbo 315832China Intelligent Aerospace Manufacturing Engineering technology Co. Ltd.Beijing 100191China

The concept of remote center of motion(RCM)is pivotal in a myriad of robotic applications,encompa-ssing areas such as medical robotics,orientation devices,and exoskeletal *** efficacy of RCM technology is a determining factor in the success of these robotic *** paper offers an exhaustive review of RCM technologies,elaborating on their various methodologies and practical *** delves into the unique characteristics of RCM across different degrees of freedom(DOFs),aiming to distill their fundamental *** addition,this paper categorizes RCM approaches into two primary classifications:design based and control *** are further organized according to their respective DOFs,providing a concise summary of their core *** upon the understanding of RCM’s versatile capabilities,this paper then transitions to an in-depth exploration of its applications across diverse robotic *** this review,we critically analyze the existing research challenges and issues that are inherently present in both RCM methodologies and their *** discussion is intended to serve as a guiding framework for future research endeavors and practical deployments in related areas.

关键词： remote center of motion mechanism robotics medical robot orientation device exoskeleton

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CuCl2改性对MnOx-CeOx纳米棒催化剂汞氧化性能及抗硫性能的提升机理研究（英文）

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Journal of Zhejiang University-science A(Applied Physics & Engineering) 2024年第8期 680-687页

作者：高淑洁胡永金蒋志昌王晓祥叶栋胡长兴中国计量大学质量与安全工程学院浙江大学化工学院工业生态与环境研究所浙大宁波理工学院机电与能源工程学院

目的：针对燃煤电站多变的烟气条件，研究适用于高汞、含硫烟气的催化剂。创新点：1.通过水热法合成锰铈氧化物纳米棒，可实现高汞含硫烟气条件下的高效脱汞；2.通过添加CuCl2，在保证催化剂的汞氧化性能的同时，提升其抗硫性能。方法... 详细信息

目的：针对燃煤电站多变的烟气条件，研究适用于高汞、含硫烟气的催化剂。创新点：1.通过水热法合成锰铈氧化物纳米棒，可实现高汞含硫烟气条件下的高效脱汞；2.通过添加CuCl2，在保证催化剂的汞氧化性能的同时，提升其抗硫性能。方法：利用固定床微反应器对催化剂的汞氧化性能进行研究，并结合物化表征建立催化剂的构效关系，进而揭示CuCl2改性催化剂的抗硫机理。结论：1.添加CuCl2提升了催化剂的汞氧化性能：在150～250°C温度区间内，催化剂的汞养护效率为100%；在含硫气氛下反应320min后，锰铈氧化物的汞氧化效率由100%下降到78%；对于CuCl2改性催化剂，共氧化性能依旧维持在100%。2.对于锰铈氧化物催化剂，Mn4+为主要的活性位点；对于CuCl2改性催化剂，除了Mn4+外，Cl-也是其中的活性位点。3.在含硫气氛下，Mn4+利用量的下降是导致锰铈氧化物催化剂活性下降的主要原因，而高反应活性Cl-的存在是CuCl2改性催化剂保持高汞脱除效率的主要原因。

关键词：汞氧化 CuCl2改性锰铈氧化物纳米棒抗硫性能氧化活性

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RHEOLOGIC STUDIES ON CHEMICAL CROSS-LINKING KINETICS FOR LDPE

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Chinese Journal of Polymer science 2012年第3期30卷 378-386页

作者：杨红梅 Zhi-gang Liu Yong-zhu Yang Qiang Zheng Zhejiang Univ Dept Polymer Sci&EngnHangzhou 310027ZhejiangPeoples R China Minist Educ Key Lab Macromol Synth&FunctionalizatHangzhou 310027ZhejiangPeoples R China

Crosslinking reaction of LDPE resin in the presence of dicumyl peroxide （DCP） was studied by isothermal rheological measurements at different temperatures and non-isothermal differential scanning calorimetry （DSC） technique with different heating rates. The kinetic parameters of crosslinking reaction were calculated by both rheological and DSC measurements. The results reveal that with the increase of DCP contents, the apparent activation energy, Ea, ranges from about 140 kJ/mol to 170 kJ/mol and the order of crosslinking reaction, n, approaches unity. The influence of measurement frequency, on crosslinking reaction was also investigated. It can be found that n does not change with the increase of ωand Ea decreases slightly with the increase of ω

关键词： Crosslinking kinetic LDPE Rheological measurement DSC measurement.

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Isolation of Chloroplasts from Marine Microalga Isochrysis galbana Parke for Their Lipid Composition Analysis

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Journal of Ocean University of China 2022年第1期21卷 225-235页

作者： ZHONG Ye LI Yanrong XU Jilin CAO Jiayi ZHOU Chengxu YAN Xiaojun Key Laboratory of Applied Marine Biotechnology Ningbo UniversityNingbo 315211China Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture Ningbo UniversityNingbo 315211China Fujian Baozhi Aquatic science and technology Co. Ltd.Zhangzhou 363503China ningbo Institute of Oceanography Ningbo 315211China

Marine microalga Isochrysis galbana is an important feed species with a high nutritional *** from other uni-cellular algae,its cell contains two chloroplasts which are the major sites for lipid ***,we optimized a chloroplast isola-tion approach suitable for the isolation of *** chloroplasts and determined the purity and integrity of the isolated chloroplasts through microscopic observations and enzyme activity *** chloroplast lipids were analyzed with a ultrahigh-performance li-quid chromatography-Q Exactive Orbitrap-mass *** newly developed isolation approach is simple and reliable to isolate chloroplasts with high integrity and *** average yield of intact chloroplasts was 15.3%±0.1%.Glycolipids and acyl-glycerols were the main chloroplast *** accounted for 56.6%of chloroplast ***(DGDG),monogalactosyldiacylglycerol(MGDG)and sulfoquinovosyldiacylglycerol(SQDG)were the main *** fatty acyl R1/R2 were mostly 18:4/16:1,18:3/16:1 and 18:4/18:5 in DGDGs,14:0/18:4,18:4/18:5,18:4/18:4 and 18:3/18:4 in MGDGs and 16:0/14:0,16:0/18:3,and 18:4/18:3 in *** addition,diacylglycerol(DAG)was the most abundant acylglycerols;the content of 22:6/18:4-DAG was the *** was a little amount of glycosphingolipid(GSL)in ***(DGMG),monogalactosylmonoglyceride(MGMG),sulfoquinovosylmonoacylglycerol(SQMG),monoglyceride(MAG),phospholi-pids(PLs),ceramide(Cer)and betaine lipids were nearly undetectable in *** fatty acid proportions of DGDGs,MGDGs,SQDGs,DAGs,triglycerides(TAGs)and GSLs were either higher or lower than or similar to those of ***,our isolation approach is applicable to many aspects of chloroplast biology,and may offer a reference for the isolation of chloroplasts from other marine microalgae.

关键词： Isochrysis galbana chloroplast isolation method lipid analysis chloroplast lipid

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Development of soft magnetic amorphous alloys with distinctly high Fe content

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science China(Physics,Mechanics & Astronomy) 2017年第10期60卷 45-50页

作者： PingBo Chen AnDing Wang ChengLiang Zhao AiNa He Gang Wang ChunTao Chang XinMin Wang Chain-Tsuan Liu Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China Zhejiang Province Key Laboratory of Magnetic Materials andApplication technology Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China Laboratory for Mierostructures Institute of Materials Science Shanghai University Shanghai 200444 China Center for Advanced Structural Materials Department of Mechanical and Biomedical Engineering College of Science and Engineering City University of Hong Kong Hong Kong 999077 China

This paper reports on the preparation of Fe82.7-85.7Si2-4.9B9.2-11.2P1.***.2.7C0,8 soft magnetic amorphous alloys with a distinctly high Fe content of 93.5-95.5 wt.% by component design and composition adjustment. All alloys can be readily fabricated into completely amorphous ribbon samples with good surface quality by the single copper roller melt-spinning method. These alloys show good bending ductility and excellent magnetic properties after annealing, i.e., low coercivity （He） of 3.3-5.9 A/m, high permeability （μe） of 5000-10000 and high flux saturation density （Bs） of 1.63-1.66 T. The mechanism of the good glass forming ability （GFA）and soft-magnetic properties are explored. The amorphous alloys with the high Fe content comparable to that of the desired high Si alloy can be promising candidates for the potential application in electric devices.

关键词： metallic glasses alloy design annealing magnetic properties shear band

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