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Food Science and Human Wellness 2024年第4期13卷 1943-1950页

作者： Hualu Zhou Bingjing zheng David Julian McClements Department of Food Science and Technology College of Agricultural and Environmental SciencesUniversity of GeorgiaGriffinGA 30223USA Biopolymers and Colloids Laboratory Department of Food ScienceUniversity of MassachusettsAmherstMA 01003USA Department of Food Science&Bioengineering Zhejiang Gongshang UniversityHangzhou 310018China

Simple but effective methods are required to incorporate multiple bioactive polyphenols into delivery systems to increase their dispersibility,stability and *** developed and tested three p Hdriven protocols for creating nanoemulsions loaded with multiple lipophilic *** protocols differed in how the different polyphenols were incorporated into the *** impact of these three methods on the formation,properties,and gastrointestinal fate of nanoemulsions loaded with curcumin,resveratrol,and quercetin was *** three methods produced nanoemulsions with similar initial particle properties:droplet diameters(0.15,0.16,and 0.15μm)and zeta-potentials(–59,–58,and–58 m V),***,the average encapsulation efficiencies(82%,88%,and 61%),gastrointestinal stabilities(83%,97%,and 29%)and bioaccessibilities(77%,90%,and 73%)for curcumin,resveratrol,and quercetin were somewhat *** particular,more quercetin degradation occurred using the approach that held it under alkaline conditions for extended *** general,the p H-driven method provides researchers with a versatile approach of incorporating multiple polyphenols with different characteristics into functional food and beverages using a simple and inexpensive method.

关键词： Polyphenols pH-Driven encapsulation Nanoemulsions Gastrointestinal fate Functional foods

The impact of the Rural Minimum Living Standard Guarantee(Rural Dibao)Program on child nutrition outcomes

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Journal of Integrative Agriculture 2024年第2期23卷 444-456页

作者： Dian Chen Xiangming Fang Yu Chen Xiaodong zheng Zhuo Chen Rodney B.W.Smith Academy of Global Food Economics and Policy China Agricultural UniversityBeijing 100083China School of Public Health Georgia State UniversityAtlanta 30303USA School of Economics Zhejiang Gongshang UniversityHangzhou 310018China College of Public Health University of GeorgiaAthens 30602USA Department of Applied Economics University of MinnesotaSaint Paul 55108USA

The Rural Minimum Living Standard Guarantee(Rural Dibao)is an important unconditional cash transfer program to alleviate poverty in rural *** the importance of children’s nutrition in breaking poverty cycles,little is known about the impact of Rural Dibao on child nutrition *** China Family Panel Studies(CFPS),this paper examines the effects of Rural Dibao on child nutrition outcomes and investigates potential pathways and heterogeneous *** exploit propensity score matching and difference-in-differences techniques to evaluate the effects of the Rural Dibao program on child nutrition *** results suggest that Rural Dibao significantly impacts the nutrition outcomes of children up to 15 years of ***,our results suggest that Rural Dibao improves child height-to-age z-scores by 1.05 standard deviations and lowers the probability of stunting by 11.9 percentage *** analyses suggest that increased protein intake is the main pathway through which Rural Dibao participation contributes to better nutrition *** also find that the effect of the program is more pronounced among girls,children who are non-left-behind or live with highly educated mothers,and those from low-income families and poor *** findings suggest that Rural Dibao participation helps improve child nutrition outcomes through improving diet quality.

关键词： Rural Minimum Living Standard Guarantee nutrition height-to-age z-scores stunting rural China

Mobile genetic elements facilitate the transmission of antibiotic resistance genes in multidrug-resistant Enterobacteriaceae from duck farms

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Food Science and Human Wellness 2024年第2期13卷 729-735页

作者： Xin’er zheng Dingting Xu Jinchang Yan Min Qian Peng Wang Davood Zaeim Jianzhong Han Daofeng Qu School of Food Science and Biotechnology Zhejiang Gongshang UniversityHangzhou 310035China The Second Affiliated Hospital School of MedicineZhejiang UniversityHangzhou 311100China Agricultural and rural Bureau of Wangdian Town Xiuzhou DistrictJiaxing 314011China

Multidrug-resistant(MDR)Enterobacteriaceae critically threaten duck farming and public *** phenotypes,genotypes,and associated mobile genetic elements(MGEs)of MDR Enterobacteriaceae isolated from 6 duck farms in zhejiang Province,China,were investigated.A total of 215 isolates were identified as Escherichia coli(64.65%),Klebsiella pneumoniae(12.09%),Proteus mirabilis(10.23%),Salmonella(8.84%),and Enterobacter cloacae(4.19%).Meanwhile,all isolates were resistant to at least two *** isolates carried tet(A)(85.12%),blaTEM(78.60%)and sul1(67.44%)resistance *** co-occurrence analysis showed that the resistance genes were associated with IS26 and integrons.A conjugative IncFII plasmid pSDM004 containing all the above MGEs was detected in Proteus mirabilis isolate *** isolate was resistant to 18 antibiotics and carried the blaNDM-5 ***,especially plasmids,are the primary antibiotic resistance gene transmission route in duck *** findings provide a theoretical basis for the rational use of antibiotics in farms which are substantial for evaluating public health and food safety.

关键词： Duck farm Mobile genetic element Antibiotic resistance gene Plasmid Food safety

Comprehensive analysis of advanced glycation end-products in commonly consumed foods:presenting a database for dietary AGEs and associated exposure assessment

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Food Science and Human Wellness 2024年第4期13卷 1917-1928页

作者： Qiaozhi Zhang Huatao Li Ruixing zheng Lili Cao Shufen Zhang Shuifeng Zhang Huadong Sheng Yuhao Jiang Yanbo Wang Linglin Fu Food Safety Key Laboratory of zhejiang Province School of Food Science and BiotechnologyZhejiang Gongshang UniversityHangzhou 310018China Ningbo Academy of Product and Food Quality Inspection(Ningbo Fibre Inspection Institute) Ningbo 315048China National Pre-packaged Food Quality Supervision and Inspection Center(zhejiang) Zhejiang Fangyuan Test Group Co.Ltd.Hangzhou 310018China

Advanced glycation end-products(AGEs)are a group of heterogeneous compounds formed in heatprocessed foods and are proven to be detrimental to human ***,there is no comprehensive database for AGEs in foods that covers the entire range of food categories,which limits the accurate risk assessment of dietary AGEs in human *** this study,we first established an isotope dilution UHPLCQq Q-MS/MS-based method for simultaneous quantification of 10 major AGEs in *** contents of these AGEs were detected in 334 foods covering all main groups consumed in Western and Chinese populations.Nε-Carboxymethyllysine,methylglyoxal-derived hydroimidazolone isomers,and glyoxal-derived hydroimidazolone-1 are predominant AGEs found in most *** amounts of AGEs were high in processed nuts,bakery products,and certain types of cereals and meats(>150 mg/kg),while low in dairy products,vegetables,fruits,and beverages(<40 mg/kg).Assessment of estimated daily intake implied that the contribution of food groups to daily AGE intake varied a lot under different eating patterns,and selection of high-AGE foods leads to up to a 2.7-fold higher intake of AGEs through daily *** presented AGE database allows accurate assessment of dietary exposure to these glycotoxins to explore their physiological impacts on human health.

关键词： Advanced glycation end-products Maillard reaction Processed foods Dietary database Exposure assessment

残余应力分布对基板玻璃落球冲击强度影响的数值模拟研究

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硅酸盐通报 2024年第4期43卷 1267-1273,1291页

作者：朱经纬舒众众金良茂曹志强张冲郑际杰刘涌韩高荣浙江大学材料科学与工程学院杭州310058 蚌埠中光电科技有限公司蚌埠233030 玻璃新材料创新中心(安徽)有限公司蚌埠233000

落球冲击强度是电子基板玻璃力学性能的重要指标,而残余应力对基板玻璃落球冲击强度有极大的影响。本文结合真实落球冲击试验,使用有限元方法对电子基板玻璃在不同残余应力分布模式下的落球冲击强度进行了数值模拟计算。结果表明,有限... 详细信息

落球冲击强度是电子基板玻璃力学性能的重要指标,而残余应力对基板玻璃落球冲击强度有极大的影响。本文结合真实落球冲击试验,使用有限元方法对电子基板玻璃在不同残余应力分布模式下的落球冲击强度进行了数值模拟计算。结果表明,有限元数值模拟能够准确地反映落球冲击试验中的真实响应和基板玻璃破碎形貌。数值模拟中电子基板玻璃的落球冲击强度(通过残余质量率表征)和受冲击区域的残余张应力之间存在非线性关系,当残余张应力数值超过阈值时,落球冲击强度迅速下降。冲击区域存在的残余张应力对落球冲击产生的应力具有明显的放大作用,仅1.0 MPa的残余张应力就能使冲击产生的应力较无残余应力时提高约10 MPa,这是造成电子基板玻璃落球冲击强度下降的重要原因。

关键词：电子基板玻璃落球冲击强度残余应力数值模拟落球冲击试验

维普期刊数据库博看期刊

大孔丙烯酸树脂对镧元素的静态与动态吸附研究

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中国稀土学报 2009年第5期27卷 698-703页

作者：熊春华郑展望姚彩萍沈忱浙江工商大学应用化学系浙江杭州310035

研究了大孔丙烯酸树脂（MAR）对镧离子的吸附与解吸行为。静态吸附研究pH值、接触时间和温度对吸附的影响。结果表明，大孔丙烯酸树脂可以有效地将镧离子从水溶液中去除。吸附平衡的时间为14h。在308K时，缓冲液pH值6．50，由Langmuir... 详细信息

研究了大孔丙烯酸树脂（MAR）对镧离子的吸附与解吸行为。静态吸附研究pH值、接触时间和温度对吸附的影响。结果表明，大孔丙烯酸树脂可以有效地将镧离子从水溶液中去除。吸附平衡的时间为14h。在308K时，缓冲液pH值6．50，由Langmuir等温线模型得出大孔丙烯酸树脂对镧离子的最大吸附量是379mg·g^-1。吸附过程符合液膜扩散动力学（k：4．37×10^-5～5．06×10^-5s^-1）。与Freundlich等温线相比，吸附过程更符合Langrnuir等温线模型。吸附热力学参数分别为：△H=16．7kJ·mol^-1，AS=130J·（tool·K）^-1，△G298K=-22．0kJ·mol^-1。托马斯模型用于确定动态吸附的特征参数以及预测突破曲线。镧离子可以用浓度为0．5mol·L^-1的HCl溶液洗脱。利用红外光谱技术对大孔丙烯酸树脂的表面进行吸附前与吸附后的表征。

关键词：大孔丙烯酸树脂(MAR) 镧吸附动力学热力学稀土

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山茱萸总皂苷超高压提取工艺研究

食品科技 2011年第10期36卷 183-186页

作者：郑群雄刘煌励建荣浙江工商大学食品与生物工程学院杭州310035

探讨山茱萸中总皂苷的最佳提取工艺。采用单因素和正交试验,以总皂苷提取得率为指标,对提取工艺中压力、提取时间和料液比3个因素进行优化。最佳工艺条件:提取压力为400MPa,提取时间为8min,料液比为1:15,总皂苷最高提取得率为17.6mg/g... 详细信息

探讨山茱萸中总皂苷的最佳提取工艺。采用单因素和正交试验,以总皂苷提取得率为指标,对提取工艺中压力、提取时间和料液比3个因素进行优化。最佳工艺条件:提取压力为400MPa,提取时间为8min,料液比为1:15,总皂苷最高提取得率为17.6mg/g。超高压提取山茱萸总皂苷工艺稳定可行。

关键词：山茱萸总皂苷超高压提取工艺

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一类反常积分的另解及推广

高等数学研究 2011年第6期14卷 58-59页

作者：孙正杰浙江工商大学统计与数学学院浙江杭州310018

利用Euler公式、和差化积公式、换元积分法,对一道反常积分题给出三种新解法,并给出它的两个推广情形.

关键词：反常积分 Euler公式证明方法

数字技术赋能全过程人民民主的运行机理及实践进路

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浙江工商大学学报 2024年第4期 52-63页

作者：段治文郑珺浙江大学马克思主义学院浙江杭州310058

数字技术赋能全过程人民民主有着深刻的运行机理,表现为数字技术赋能民主主体全方位覆盖,强化了民主运行的动力支持;数字技术赋能民主环节全链条运转,完善了民主运行的过程支撑;数字技术赋能民主场域全时空延展,构建了民主运行的环境支... 详细信息

数字技术赋能全过程人民民主有着深刻的运行机理,表现为数字技术赋能民主主体全方位覆盖,强化了民主运行的动力支持;数字技术赋能民主环节全链条运转,完善了民主运行的过程支撑;数字技术赋能民主场域全时空延展,构建了民主运行的环境支托。同时,数字时代也暴露出数字技术的滥用掣肘全过程人民民主的真实实现、数字利维坦的宰制造成全过程人民民主的主体制约、数字鸿沟的形成阻滞全过程人民民主的有效运转等潜在隐忧和风险。我们需要从政治、价值、技术、制度等多个层面加强数字赋能的正向作用,通过坚持党管数据推进国家治理体系和治理能力现代化、以人民为中心克服技术中心主义倾向、深化数字创新发挥数字新基建赋能、形成算法规制防范和规避数字风险,以此促进和保障全过程人民民主高质量发展。

关键词：数字技术全过程人民民主运行机理实践进路