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薏米多糖对低脂酸乳发酵特性、感官、质构及流变品质的影响

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食品科技 2024年第5期49卷 266-274页

作者：孙辉杨浩林范俐郑淑琳黎柳苇李明全武夷学院茶与食品学院福建武夷山354300

为提升低脂酸乳的品质,将薏米多糖(0.35、0.7、1.05、1.40、1.75 mg/mL)添加到脱脂复原乳中发酵制备低脂酸乳,考察其发酵特性、感官、质构和流变特性的变化规律。结果表明,随着薏米多糖浓度的增加,酸乳中保加利亚乳杆菌和嗜热链球菌的... 详细信息

为提升低脂酸乳的品质,将薏米多糖(0.35、0.7、1.05、1.40、1.75 mg/mL)添加到脱脂复原乳中发酵制备低脂酸乳,考察其发酵特性、感官、质构和流变特性的变化规律。结果表明,随着薏米多糖浓度的增加,酸乳中保加利亚乳杆菌和嗜热链球菌的活菌数逐渐增加,发酵时间明显缩短;薏米多糖浓度为1.05 mg/mL时的酸乳感官品质评分最高、持水力最大、乳清析出率最低,且酸乳在该浓度下的硬度、咀嚼性、表观黏度、黏弹性和触变性显著提高。适量薏米多糖的添加可增加低脂酸乳的活菌数,提升发酵效率、持水力、感官品质、质构和流变性能,说明薏米多糖可作为一种天然稳定剂和功能性添加剂改善低脂酸乳的发酵品质。

关键词：薏米多糖低脂酸乳发酵特性质构流变

An Optimized-based Ion Etch Yield Modeling Method in Plasma Etching

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An Optimized-based Ion Etch Yield Modeling Method in Plasma ...

不同武夷名丛鲜叶茶多糖组成分析及体外抗氧化活性比较研究

第25届中国控制与决策会议

作者： Hongjun Yang Yixu Song shulin zheng Lihua Wang Peifa Jia State Key Laboratory on Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Chinese Department of Computer Science and Technology Tsinghua University Shenyang Artillery Academy

ISBN: (纸本)9781467355339

In order to study the physics mechanism of surface etching process in low pressure plasmas, we propose a method to optimize etching yield model, which combines optimization technology with surface evolution algorithm. In plasma etching process, the surface effect of the ions are controlled by etch yield which may be measured by the elaborate experiment. But measuring tool or instrument affect measuring result, which will lead to etch yield model’s inaccuracy. In order to avoid the problems caused by measuring method, we adopt optimization technology to calculate the etch yield model. By defining an error function between the actual etching profile and simulation profile, etch yield modeling problem is transformed into an optimization problem;Then we use the genetic algorithm and surface evolution algorithm to solve this problem. The experimental results illustrate that simulation profile using the etch yield model by this method is very similar with the actual etching profile in surface topography. It also proves that our proposed method is effective and can be used to model etch yield.

关键词： Etch yield Genetic algorithm Surface evolution algorithm Plasma etching

来源： cnki会议评论

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中国茶叶 2024年第2期46卷 19-27页

作者：郑淑琳羽观华罗盛财王飞权程曦郑玉成李力张渤石玉涛武夷学院茶与食品学院茶叶福建省高校工程研究中心武夷学院茶叶科学研究所福建武夷山354300 武夷山市龟岩茶业有限公司福建武夷山354300

为了探明不同武夷名丛茶多糖组成和体外抗氧化活性差异,选取雀舌、瓜子金、胭脂柳、老君眉4个武夷名丛鲜叶为原料,通过水提醇沉淀法提取茶多糖,测定了4个品种鲜叶的茶多糖中中性糖、糖醛酸、蛋白质和茶多酚等组分含量,并比较了4个品种... 详细信息

为了探明不同武夷名丛茶多糖组成和体外抗氧化活性差异,选取雀舌、瓜子金、胭脂柳、老君眉4个武夷名丛鲜叶为原料,通过水提醇沉淀法提取茶多糖,测定了4个品种鲜叶的茶多糖中中性糖、糖醛酸、蛋白质和茶多酚等组分含量,并比较了4个品种茶多糖清除1,1-二苯基苦基苯肼自由基(DPPH)、羟基自由基(·OH)和超氧阴离子自由基(O_(2)^(-)·)活性的差异。结果表明,不同武夷名丛茶树品种鲜叶提取茶多糖得率不同,胭脂柳品种得率较高,老君眉得率较低;4个武夷名丛的茶多糖在中性糖、糖醛酸、蛋白质和茶多酚含量上存在较大差异;体外抗氧化活性测定结果显示,不同武夷名丛茶多糖清除DPPH、·OH和O_(2)^(-)·活性具有明显差异,但对3种自由基的清除能力均呈现出剂量-效应关系;4个品种的茶多糖清除DPPH和O_(2)^(-)·的IC_(50)值均高于阳性对照Vc,清除·OH的IC_(50)值均低于阳性对照Vc,表明雀舌、瓜子金、胭脂柳和老君眉4个品种的茶多糖是良好的·OH清除剂。研究结果可为武夷名丛茶树种质资源的开发利用和功能性品种的选育提供科学依据。

关键词：武夷名丛茶多糖多糖组成抗氧化自由基

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Chloride ion battery:A new emerged electrochemical system for next-generation energy storage

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Journal of Energy Chemistry 2024年第1期88卷 154-168,I0004页

作者： shulin Chen Lu Wu Yu Liu Peng Zhou Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and NanotechnologyWuhan University of Science and TechnologyWuhan 430081HubeiChina

In the scope of developing new electrochemical concepts to build batteries with high energy density,chloride ion batteries(CIBs)have emerged as a candidate for the next generation of novel electrochemical energy storage technologies,which show the potential in matching or even surpassing the current lithium metal batteries in terms of energy density,dendrite-free safety,and elimination of the dependence on the strained lithium and cobalt ***,the development of CIBs is still at the initial stage with unsatisfactory performance and several challenges have hindered them from reaching *** this review,we examine the current advances of CIBs by considering the electrode material design to the electrolyte,thus outlining the new opportunities of aqueous CIBs especially combined with desalination,chloride redox battery,*** respect to the developing road of lithium ion and fluoride ion batteries,the possibility of using solid-state chloride ion conductors to replace liquid electrolytes is tentatively *** beyond,perspectives and clear suggestions are concluded by highlighting the major obstacles and by prescribing specific research topics to inspire more efforts for CIBs in large-scale energy storage applications.

关键词： Chloride ion battery Anion shuttling Conversion reaction Chloride redox

Thermoelectric performance of Bi2Sn2Te6 monolayer with ultralow lattice thermal conductivity induced by hybrid bonding properties: A theoretical prediction

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Science China Technological Sciences 2024年第11期67卷 3381-3393页

作者： TANG ShuWei WANG Hao WAN Da LI XiaoDong GUO WanRong zheng Tuo QI XiuLing BAI shulin College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

The crystal structure,mechanical stability,phonon dispersion,electronic transport properties and thermoelectric（TE） performance of the Bi2Sn2Te6monolayer are assessed with the first-principles calculations and the Boltzmann transport *** Bi2Sn2Te6monolayer is an indirect semiconductor with a band gap of 0.91 eV using the Heyd-Scuseria-Ernzerhof（HSE06） functional in consideration of the spin-orbit coupling（SOC） *** Bi2Sn2Te6monolayer is high thermodynamically and mechanically stable by the assessments of elastic modulus,phonon dispersion curves,and ab initio molecular dynamics（AIMD） *** hybrid bonding characteristics are discovered in Bi2Sn2Te6monolayer,which is advantageous for phonon *** antibonding interactions near the Fermi level weaken the chemical bonding and reduce the phonon vibrational *** to the short phonon relaxation time,strong anharmonic scattering,large Grüneisen parameter,and small phonon group velocity,an ultralow lattice thermal conductivity(0.27 W/（m·K）@300 K) is achieved for the *** optimal dimensionless figure of merit（ZT） values for the n-type and p-type Bi2Sn2Te6monolayers are 2.68 and 1.63 at 700 K,respectively,associated with a high TE conversion efficiency of 20.01% at the same ***,the Bi2Sn2Te6monolayer emerges as a promising candidate for TE material with high conversion efficiency.

关键词： A2B2Te6 family hybrid bonding antibonding interactions ultralow lattice thermal conductivity first-principles calculations

Thermoelectric performance of BiSnTemonolayer with ultralow lattice thermal conductivity induced by hybrid bonding properties:A theoretical prediction

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Science China Technological Sciences 2024年

The crystal structure,mechanical stability,phonon dispersion,electronic transport properties and thermoelectric （TE） performance of the Bi2Sn2Te6monolayer are assessed with the first-principles calculations and the Boltzmann transport *** Bi2Sn2Te6monolayer is an indirect semiconductor with a band gap of 0.91 eV using the Heyd-Scuseria-Ernzerhof （HSE06）functional in consideration of the spin-orbit coupling （SOC） *** Bi2Sn2Te6monolayer is high thermodynamically and mechanically stable by the assessments of elastic modulus,phonon dispersion curves,and ab initio molecular dynamics （AIMD）*** hybrid bonding characteristics are discovered in Bi2Sn2Te6monolayer,which is advantageous for phonon *** antibonding interactions near the Fermi level weaken the chemical bonding and reduce the phonon vibrational *** to the short phonon relaxation time,strong anharmonic scattering,large Grüneisen parameter,and small phonon group velocity,an ultralow lattice thermal conductivity (0.27 W/（m·K）@300K) is achieved for the *** optimal dimensionless figure of merit （ZT） values for the n-type and p-type Bi2Sn2Te6monolayers are 2.68 and 1.63 at 700 K,respectively,associated with a high TE conversion efficiency of 20.01%at the same ***,the Bi2Sn2Te6monolayer emerges as a promising candidate for TE material with high conversion efficiency.

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Demonstration of normally-off p-channel GaN transistor with high threshold voltage and low subthreshold swing based on single p-GaN

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Science China(Information Sciences) 2024年第9期67卷 348-349页

作者： Yangfeng LI Zian DONG Shuai CHEN Qin WANG Tong LI shulin CHEN Kun zheng Jie ZHANG Guojian DING Yang WANG Haiqiang JIA Rong YANG Lei LIAO Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors (College of Integrated Circuits) Hunan University Hunan San'an Semiconductor Co. Ltd. Songshan Lake Materials Laboratory

GaN outperforms silicon in applications with high power and high frequency owing to the high critical electric field and high electron mobility. However, the hole-based GaN transistors which are pivotal to the GaN-based CMOS circuits and high-side switching are still under investigation. Two-dimensional hole gas(2DHG) has been used to demonstrate the p-channel GaN field-effect-transistors(FETs) [1–5].

关键词： MOSFETS

Soil properties and not plant factors affect both abundant and rare microbial taxa after thinning in a mixed stand of Cunninghamia lanceolata and Sassafras tzumu

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Journal of Forestry Research 2024年第2期35卷 81-94页

作者： Wanxia Peng Tongqing Song Hu Du Feng Wang Fuping Zeng Yang Wang shulin Chen Yinzhu Chen Key Laboratory of Agro‑Ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125People’s Republic of China Guangxi Industrial Technology Research Institute for Karst Desertification Control Nanning 530001People’s Republic of China Huanjiang Observation and Research Station for Karst Ecosystems Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125People’s Republic of China Hubei Ecology Polytechnic College Wuhan 430200People’s Republic of China Hubei Tongshan Damushan State Forest Farm Tongshan 437652People’s Republic of China

Thinning is an effective management step for sustainable forest development,yet less attention is paid to the restoration of soil microbiota after *** this study,both abundant and rare soil microbial communities(i.e.,bacterial,fungal),were evaluated under various thinning treatments in a mixed stand of Cunninghamia lanceolata and Sassafras tzumu using Mi Seq *** did not significantly change either abundant or rare bacterial and fungal community composition,but affected their alpha *** Shannon–Wiener indexes of rare fungal taxa under medium thinning were significantly lower than in the light thinning(P<0.05 level).Xanthobacteraceae dominated the abundant bacterial taxa,and Saitozyma and Mortierlla the abundant fungal *** most common rare bacterial taxa varied;there was no prevalent rare fungal taxa under different *** addition,soil available nitrogen,total phosphorus,and p H had significant effects on rare bacterial ***,especially available phosphorus,but not nitrogen,affected abundant and rare soil *** results indicate that soil properties rather than plant factors affect abundant and rare microbial communities in soils of mixed ***,through mediating soil properties,influences both abundant and rare bacterial and fungal communities in the mixed *** and *** stand.

关键词： Diversity Abundant taxa Rare taxa Thinning Mixed stand

Rattling-like behavior and band convergence induced ultra-low lattice thermal conductivity in MgAl_(2)Te_(4) monolayer

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Journal of Materiomics 2024年第5期10卷 1004-1016页

作者： Da Wan shulin Bai Xiaodong Li Jingyi Zhang Peng Ai Wanrong Guo Shuwei Tang College of Materials Science and Engineering Liaoning Technical UniversityFuxinLiaoning123000China Faculty of Chemistry Northeast Normal UniversityChangchunJilin130024China

Inspired by the excellent stability exhibited by experimentally synthesized two-dimensional(2D)MoSi_(2)N_(4) layered material,the thermal and electronic transport,and thermoelectric(TE)properties of MgAl2Te4 monolayer are systematically investigated using the First-principles calculations and Boltzmann transport *** mechanical stability,dynamic stability,and thermal stability(900 K)of the MgAl_(2)Te_(4) monolayer are demonstrated,*** MgAl_(2)Te_(4) monolayer exhibits a bandgap of 1.35 eV using the HSE06 functional in combination with spin-orbit coupling(SOC)*** convergence in the valence band is favorable to improve the thermoelectric *** rattling thermal damping effect caused by the weak bonding of Mgsingle bondTe bonds in MgAl2Te4 monolayer leads to ultra-low lattice thermal conductivity(0.95/0.38 W/(m·K)@300 K along the x-/y-direction),which is further demonstrated by the phonon group velocities,phonon relaxation time,Grüneisen parameters,and scattering *** optimal zT of 3.28 at 900 K is achieved for the p-type MgAl_(2)Te_(4) monolayer,showing the great promising prospect for the excellent p-type thermoelectric *** current work not only reveals the underlying mechanisms responsible for the excellent TE properties,but also elaborates on the promising thermoelectric application of MgAl_(2)Te_(4) monolayer material at high temperature.

关键词： Thermoelectric material Mg atomic rattling Band convergence Ultra-low lattice thermal conductivity