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大学物理光学仿真实验可视化教学平台的设计与实践

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中国现代教育装备 2024年第5期 56-58页

作者：张兴坊枣庄学院光电工程学院山东枣庄277160

根据光的干涉和衍射原理,利用MATLAB GUI设计了杨氏双缝、劈尖、牛顿环、迈克尔逊干涉和夫琅禾费单缝、圆孔、矩孔、多缝衍射等实验的交互式仿真界面,不仅能显示相关物理参量对干涉或衍射图样的影响,而且能展示图样的动态效果。该平台... 详细信息

根据光的干涉和衍射原理,利用MATLAB GUI设计了杨氏双缝、劈尖、牛顿环、迈克尔逊干涉和夫琅禾费单缝、圆孔、矩孔、多缝衍射等实验的交互式仿真界面,不仅能显示相关物理参量对干涉或衍射图样的影响,而且能展示图样的动态效果。该平台的运用有助于增强学生对光学现象及原理的理解,提高学生的科学创新能力。

关键词： MATLAB GUI 光学仿真衍射干涉

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支链、奇数链脂肪酸与肠道健康的关联性研究

中国油脂 2024年第7期49卷 54-60,74页

作者：张颖张杏芳闫雨蒙张颖沈旖凝闫媛媛李晓光上海交通大学医学院公共卫生学院上海200025

为明确支链脂肪酸(BCFA)与奇数链脂肪酸(OCFA)对肠道健康的影响,利用气相色谱-质谱联用分析健康人群与肠道疾病患者血液中脂肪酸含量的差异,并应用正交偏最小二乘-判别分析(OPLS-DA)鉴定肠道健康人群的特征脂肪酸。结果表明:健康对照组... 详细信息

为明确支链脂肪酸(BCFA)与奇数链脂肪酸(OCFA)对肠道健康的影响,利用气相色谱-质谱联用分析健康人群与肠道疾病患者血液中脂肪酸含量的差异,并应用正交偏最小二乘-判别分析(OPLS-DA)鉴定肠道健康人群的特征脂肪酸。结果表明:健康对照组、肠道息肉组、结直肠癌组3组人群中共检测出9种BCFA和4种OCFA;BCFA、OCFA含量在健康人群中显著偏高(p<0􀆰05),其中anteiso-C17∶0、C17∶0含量随肠道健康状态恶化呈梯度下降趋势(p<0.05);OPLS-DA共鉴定出anteiso-C17∶0、iso-C17∶0、C18∶1、C18∶0、C16∶0、C14∶06种特征脂肪酸标志物。综上,BCFA和OCFA对肠道健康有潜在的保护作用。

关键词：支链脂肪酸奇数链脂肪酸肠道健康

奇数链脂肪酸抑制脂多糖诱导的Caco-2细胞炎症反应研究

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中国油脂 2024年第6期49卷 82-90,111页

作者：闫雨蒙张颖马强张杏芳闫媛媛李晓光王慧上海交通大学医学院公共卫生学院上海200025 同济大学附属上海市肺科医院上海200433 上海交通大学医学院仁济临床医学院上海200025

为明确奇数链脂肪酸(OCFA)与人体健康的关系,采用气相色谱-质谱法(GC-MS)检测分析健康人群和结肠癌患者血清中OCFA的分布特征差异,并采用脂多糖(LPS)诱导的Caco-2细胞炎症模型探究OCFA对炎症的抑制效应,包括对细胞活性、促炎因子基因表... 详细信息

为明确奇数链脂肪酸(OCFA)与人体健康的关系,采用气相色谱-质谱法(GC-MS)检测分析健康人群和结肠癌患者血清中OCFA的分布特征差异,并采用脂多糖(LPS)诱导的Caco-2细胞炎症模型探究OCFA对炎症的抑制效应,包括对细胞活性、促炎因子基因表达以及脂肪酸组成的影响。结果表明:健康人群中的OCFA(C15∶0和C17∶0)含量显著高于结肠癌人群;男性以及高龄(59岁以上)结肠癌人群中C15∶0和C17∶0水平偏低;C15∶0和C17∶0对细胞活力无影响,C15∶0能够显著降低LPS刺激后Caco-2细胞中促炎因子TNF-α、IL-8和iNOS的表达,C17∶0能够显著降低促炎因子IL-6、TNF-α、IL-8和iNOS的表达,两种OCFA均能够起到类似于n-3PUFA缓解炎症刺激的作用;两种OCFA(C15∶0和C17∶0)能够在肠道细胞Caco-2中吸收并代谢成C17∶0、C17∶1。综上,OCFA能够调节肠道炎症因子的表达进而抑制肠上皮细胞炎症反应,对肠道健康有潜在的保护作用。

关键词：奇数链脂肪酸 C15∶0 C17∶0 肠道炎症肠道健康

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A potential-responsive ion-pump system based on nickel hexacyanoferrate film for selective extraction of cesium ions

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Chinese Journal of Chemical Engineering 2023年第11期63卷 51-62页

作者： Guoliang Zeng Danni Ye xingfang zhang Fengfeng Gao Xiaogang Hao Jun Li Zhong Liu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China Qinghai Institute of Salt Lakes Chinese Academy of SciencesXining 810008China

A nickel hexacyanoferrate(NiHCF)film electrode was prepared with NiHCF,conductive carbon black,and polyvinylidene difluoride,which was coated on graphite plate substrate for selective extraction of Cs^(+)ions by using electrochemically switched ion exchange(ESIX)technology.A potential-responsive ionpump system for efficient extraction of Cs+ions was designed,and the effect of wet film thicknesses,charging modes,flow rates,and chamber widths on Cs+ions extraction performance was *** the system,the adsorption capacity and removal percentage of Cs^(+)ions on the NiHCF film electrode reached as high as 147.69 mg·g^(-1)and 92.47%,***,the NiHCF film electrode showed high selectivity for Cs^(+)ions and *** seven cycles of adsorption/desorption,the desorption percentage could reach about 100%.The excellent Cs^(+)extraction performance should be attributed to the strong driving force produced by the potential-responsive ion-pumping effect in the ESIX process,as well as the low ion transfer resistance of the film electrode which is caused by the special crystal structure of *** addition,the NiHCF film electrode was implemented to work together with the bismuth oxybromide(BiOBr)film electrode to accomplish the simultaneous extraction of Cs^(+)and Br^(-).And the adsorption capacity and removal percentage of Br^(-)ions on the BiOBr film electrode reached 69.53 mg·g^(-1)and 77.32%,*** is expected that such a potential-responsive ion-pump system based on NiHCF and BiOBr film electrodes could be used for the selective extraction and concentration of Cs^(+)and Br^(-)ions from salt lake brine.

关键词： Electrochemically switched ion exchange Potential-responsive ion-pump system NiHCF film electrode Cesium ions

GHCAD: A Feature-based Design System

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Computer Aided Drafting,Design and Manufacturing 1995年第1期5卷 33-45页

作者： Qian Xiaoping Xiang Wen zhang xingfang Zhou Ji Yu Jun

A feature-centered scheme is presented to represent the feature-based variational partmodel. Constraint reasoning approach and numerical approach are trigged up to satisfy theconstraints between features. Coassociations between boundary elements in feature level and partlevel are maintained to implement a series of feature operations and to implement precision featureinodslling adaptive for paramatric part geometry ***, a feature-based parametricmodelling system based on these ideas , is developed, and some examples are given finally.

关键词： feature CAD/CAPP integration form feature precisoin feature parametrization varlation

填充床电极反应器中典型有机电合成反应系统的选择性分析

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化工学报 2008年第5期59卷 1165-1170页

作者：张兴芳孙彦平太原理工大学洁净化工研究所山西太原030024

A typical electrode reaction of electro-organic synthesis usually takes place with competing side electrode reaction and homogeneous *** enhance the electrode polarization for increasing reaction rate will considerably reduce the reaction *** bed electrodes can reach higher current densities at relatively low electrode polarizations,which is favorable to mitigating the inconsistency between reaction rate and *** this paper,the typical process of electro-organic synthesis in a differential reactor of packed bed electrode(PBEDR),was theoretically analyzed with emphasis on the effect of lateral distribution of over-potential on the selectivity.A generalized mathematical model was developed to describe the distribution of *** variables μ and  that characterize the polarization and influence of side electrode reaction in the system,were derived from ***’s decomposition method(ADM)was used to solve the nonlinear differential equation of the model to obtain an approximate analytical solution,which was in the form of algebraic expressions of infinite power *** the solution,the relationship between over-potential distribution and average selectivity could be easily calculated without solving the nonlinear model time and ***,an analysis of electrochemical reduction of nitrobenzene in a PBEDR was presented,and the characteristic size of the reactor,namely the thickness of the packed bed electrode,was theoretically *** results showed that the calculated results were consistent with experimental data satisfactorily.

关键词：有机电合成硝基苯还原反应选择性填充床电极普遍化数模

A near-complete cucumber reference genome assembly and Cucumber-DB,a multi-omics database

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Molecular Plant 2024年第8期17卷 1178-1182页

作者： Jiantao Guan Han Miao Zhonghua zhang Shaoyun Dong Qi Zhoul Xiaoping Liu Diane M.Beckles xingfang Gul Sanwen Huang Shengping zhang State Key Laboratory of Vegetable Biobreeding Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province College of HorticultureQingdao Agricultural UniversityQingdao266109China Department of Plant Sciences University of CaliforniaDavisOne Shield AvenueDavisCA95616USA

Dear Editor,Cucumber(Cucumis sativus)is a key vegetable crop and an essential model for genetics and genomics research in Cucurbitaceae,especially in studies on plant sex determination and vascular *** the first sequenced genome among vegetable crops,the cucumber reference genome has been a crucial genetic resource for comparative genomics and genetic ***,the latest version of the cucumber *** Long reference genome(CLv3.0),generated using PacBio long-reads data,is *** a predicted genome size of 350-367 Mb,CLv3.0 encompasses only 226.2 Mb,leaving 72 gaps and over 120 Mb of unknown *** low assembly completeness(approximately 62%)is primarily due to the high proportion(~30%)of heterochromatic satellite and rDNA sequences in cucumber,substantially higher than that observed in many other species such as Arabidopsis,rice,maize,and watermelon,where it is less than 5%(Han et al.,2008;Huang et al.,2009;Li et al.,2019).

关键词： crops incomplete cucumber