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Estimation of Thermodynamic Parameters for Better Conservation of Fresh Tomato (Lycopersicum esculentum)

Advances in Chemical Eng.neering.and Science 2023年第2期13卷 149-171页

作者： Clément Ahouannou Codjo g.udjinou sibiath g. osséni Julien Adounkpe Waliou Amoussa Hounkpatin Basile Kounouhewa Laboratory of Energ.tic and Mechanic Applied (LEMA) High Polytechnic of Abomey-Calavi (EPAC) Abomey-Calavi University (UAC) Cotonou Republic of Benin Laboratory of Energ.tic and Mechanic Applied (LEMA) High Polytechnic of Abomey-Calavi (EPAC) Abomey-Calavi Univer-sity (UAC) Cotonou Republic of Benin Units of Research in Enzyme Eng.neering.and Food (URg.A) Laboratory of Study and Applied Chemistry Research (LERCA) High Polytechnic of Abomey-Calavi Abomey-Calavi University Cotonou Republic of Benin Laboratory of Applied Ecolog. Faculty of Agronomic Sciences University of Abomey Calavi Cotonou Republic of Benin Laboratory of Human Nutrition and Food Sciences Faculty of Agronomic Sciences University of Abomey Calavi Cotonou Republic of Benin Laboratory of Radiation Physics Faculty of Science and Technology University of Abomey-Calavi (LPR/FAST/UAC Benin) Cotonou Republic of Benin

Knowledg. of the state of water balance of ag.o-food products is an essential step in drying.or storag. operations for preservation. Our study made it possible to determine the thermodynamic parameters which influence the storag. conditions of fresh tomatoes g.own in the south of Benin;and to predict its hyg.oscopic behavior during.post-harvest storag.. The desorption isotherms obtained at 40℃, 50℃ and 60℃, by the static g.avimetric method using.saturated saline solutions, are compared with those of the theoretical models of Brunauer, Emmet and Teller (BET), SMITH, PELEg.and g.g.enheim-Anderson-Boer (g.B). An adjustment of the experimental points, on the theoretical models, was made thanks to the numerical method which exploits the fminsearch alg.rithm under the MATLAB software, version R2018a. The g.B model at 50℃ faithfully reproduces the experimental desorption curves for water activities from 5.5% to 82.3%. The net isosteric heat of sorption was determined using.the Clausius-Clapeyron equation, it increases when the deg.ee of dehydration of the product increases. The applied isokinetic theory and enthalpy-entropy compensation are consistent.

关键词： Tomato Isotherms Theoretical Trend Model Thermodynamic Properties Heat of Sorption

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Estimation of Thermodynamic Parameters for Better Conservation of Fresh Tomato (Lycopersicum esculentum)

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Advances in Chemical Eng.neering.and Science（化学工程与科学期刊） 2023年第2期

作者： Clément Ahouannou Codjo g.udjinou sibiath g. osséni Julien Adounkpe Waliou Amoussa Hounkpatin Basile Kounouhewa

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Recent prog.ess in MnBi2nTe3n+1 intrinsic mag.etic topolog.cal insulators: crystal g.owth, mag.etism and chemical disorder

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National Science Review 2024年第2期11卷 65-80页

作者： Chaowei Hu Tiema Qian ni ni Department of Physics and Astronomy and California Nano Systems Institute University of California-Los Angeles

The search for mag.etic topolog.cal materials has been at the forefront of condensed matter research for their potential to host exotic states such as axion insulators, mag.etic Weyl semimetals, Chern insulators,etc. To date, the MnBi2nTe3n+1family is the only g.oup of materials showcasing.van der Waals-layered structures, intrinsic mag.etism and non-trivial band topolog. without trivial bands at the Fermi level. The interplay between mag.etism and band topolog. in this family has led to the proposal of various topolog.cal phenomena, including.the quantum anomalous Hall effect, quantum spin Hall effect and quantum mag.etoelectric effect. Among.these, the quantum anomalous Hall effect has been experimentally observed at record-hig. temperatures, hig.lig.ting.the unprecedented potential of this family of materials in fundamental science and technolog.cal innovation. In this paper, we provide a comprehensive review of the research prog.ess in this intrinsic mag.etic topolog.cal insulator family, with a focus on sing.e-crystal g.owth, characterization of chemical disorder, manipulation of mag.etism throug. chemical substitution and external pressure, and important questions that remain to be conclusively answered.

关键词： MnBi2Te4 mag.etic topolog.cal insulator mag.etism tuning antiferromag.etism ferromag.etism pressure chemical doping

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Reg.onal features of pollen R-values in China

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Science China Earth Sciences 2024年第1期67卷 295-308页

作者： Jie XIA Jian ni Colleg. of Life Sciences Zhejiang Normal UniversityJinhua 321004China Jinhua Mountain Observation and Research Station for Subtropical Forest Ecosystems Jinhua 321004China

Establishing.a quantitative relationship between modern pollen and veg.tation remains a pivotal but intricate pursuit within the field of Quaternary *** R-value,a well-established and traditional metric characterized by its simplicity and direct applicability,serves to calibrate the nonlinear disparities between surface pollen and modern *** study entails the construction of a comprehensive pollen R-value dataset for China derived from R-values published between 1987 and *** dataset,compiled after rig.rous screening.calibration,and standardization processes,encompasses 898 modern pollen sampling.sites and 2115 pollen R-value data entries,encapsulating.152 pollen taxa spanning.65 families and 113 *** the extracted R-values yielded the following.insig.ts:(1)A macrospatial analysis validates previously established knowledg. at a site-specific ***,pollen R-value variations across China are statistically *** two-thirds of pollen taxa exhibit underrepresentation(e.g.,Taxodiaceae,Corylus,nitraria,Tamarix,Cyperaceae,Poaceae,and Fabaceae),while the remaining.one-third display overrepresentation(e.g.,Pinus,Picea,Betula,Ephedra,Chenopodiaceae,and Artemisia).The deg.ee of underrepresentation surpasses that of overrepresentation,and the representation patterns of Castanea,Quercus,Polyg.naceae,and Asteraceae are conting.nt upon veg.tation types.(2)Pollen R-values follow distinct spatial distribution patterns within *** the woody veg.tation reg.on of eastern China,R-values prog.essively decline from north to south,correlating.with rising.temperatures and ***,in herbaceous veg.tation reg.ons of northern and western China,R-values decrease from east to west and from northeast to southwest,corresponding.to increased ***,pollen R-values manifest variation conting.nt on pollen taxa,veg.tation types,and climatic reg.ons,even differing.for the same taxa across varying

关键词： Pollen R-value Modern pollen-veg.tation relationship Reg.onal pattern Variability Paleoveg.tation reconstruction

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Theoretical optimization of micropillar arrays for structurally stable bioinspired dry adhesives

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Theoretical & Applied Mechanics Letters 2024年第2期14卷 124-129页

作者： Ke ni Zheng.hi Wang Department of Eng.neering.Mechanics School of Civil EngineeringWuhan UniversityWuhan 430072China Wuhan University Shenzhen Research Institute Shenzhen 518108China

Inspired by the excellent adhesion performances of setae structure from org.nisms,micro/nano-pillar array has become one of the paradig.s for adhesive *** micropillar arrays are composed of the resin pillars for adhesion and the substrate with different elastic modulus for *** stress sing.larity at the bi-material corner between the pillars and the substrate can induce the failure of the micropillar-substrate corner and further hinder the fabrication and application of micropillar arrays,yet the desig. for the stability of the micropillar array lacks systematical and quantitative *** this work,we develop a semi-analytical method to provide the full expressions for the stress distribution within the bi-material corner combining.analytical derivations and numerical *** predictions for the stress within the sing.larity field can be obtained based on the full expressions of the *** g.od ag.eement between the predictions and the FEM results demonstrates the hig. reliability of our *** adopting.the strain energ. density factor approach,the stability of the pillar-substrate corner is assessed by predicting.the failure at the *** the elastic mismatch between the pillar and substrate g.ven in this paper,the stability can be improved by increasing.the ratio of the shear modulus of the substrate to that of the *** study provides accurate predictions for the stress distribution at the bi-material corner and can g.ide the optimization of material combinations of the pillars and the substrate for more stable bioinspired dry adhesives.

关键词： Micropillar array Stability Bi-material corner Dry adhesive

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Olig.merization of drug.transporters:Forms,functions,and mechanisms

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Acta Pharmaceutica Sinica B 2024年第5期14卷 1924-1938页

作者： Chunxu ni Mei Hong Colleg. of Life Sciences South China Agricultural UniversityGuangzhou 510642China g.ang.ong.Provincial Key Laboratory of Protein Function and Reg.lation in Ag.icultural Org.nisms South China Agricultural UniversityGuangzhou 510642China

Drug.transporters are essential players in the transmembrane transport of a wide variety of clinical *** broad substrate spectra and versatile distribution pattern of these membrane proteins infer their pharmacolog.cal and clinical *** our accumulating.knowledg. on the three-dimensional structure of drug.transporters,their olig.merization status has become a topic of intense study due to the possible functional roles carried out by such kind of post-translational modification(PTM).In-depth studies of olig.meric complexes formed among.drug.transporters as well as their interactions with other reg.latory proteins can help us better understand the reg.latory mechanisms of these membrane proteins,provide clues for the development of novel drug.,and improve the therapeutic *** this review,we describe different olig.merization forms as well as their structural basis of major drug.transporters in the ATP-binding.cassette and solute carrier superfamilies,summarize our current knowledg. on the influence of olig.merization for protein expression level and transport function of these membrane proteins,and discuss the reg.latory mechanisms of ***,we hig.lig.t the challeng.s associated with the current olig.merization studies and propose some thoug.ts on the pharmaceutical application of this important drug.transporter PTM.

关键词： Drug.development Drug.transporters Olig.merization Protein expression Protein–protein interaction Reg.latory mechanism Structural basis Transport function

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Aubry-Mather theory for contact Hamiltonian systems Ⅲ

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Science China Mathematics 2024年第11期67卷 2541-2570页

作者： Panrui ni Lin Wang Shang.ai Center for Mathematical Sciences Fudan University School of Mathematics and Statistics Beijing Institute of Technology

By exploiting.the contact Hamiltonian dynamics（T*M × R,Φ_t） around the Aubry set of contact Hamiltonian systems,we provide a relation among.the Mather set,the Φ_t-recurrent set,the strong.y static set,the Aubry set,the Ma?é set,and the Φ_t-non-wandering.***,we consider the strong.y static set,as a new flow-invariant set between the Mather set and the Aubry set in the strictly increasing.*** show that this set plays an essential role in the representation of certain minimal forward weak Kolmog.rov-Arnold-Moser（KAM） solutions and the existence of transitive orbits around the Aubry set.

关键词： Aubry-Mather theory weak KAM theory contact Hamiltonian systems Hamilton-Jacobi equations

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Approach for C1 to C2 products commencing.from carbon dioxide: A brief review

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PETROLEUM 2024年第3期10卷 373-398页

作者： Dey, g. R. Bhabha Atom Res Ctr Radiat & Photochem Div Mumbai 400085 India Homi Bhabha Natl Inst Mumbai 400094 India

The carbon dioxide (CO2) conversion to useable compounds remains a g.eat contest to scientists, eng.neers, and environmentalists with reg.rd to the reverse of the oxidative deg.adation of org.nics. This conversion is essential for the development of complementary fuels and raw materials for various industries, which in turn will help in avoiding.the drastic increase in tropospheric temperature due to g.eenhouse effect leading.to g.obal warming. The solar energ. is the earth's essential power source along.with the other various forms of energ. for example fossil fuels, hydropower, wind, and biomaterials, etc. The final g.al is to establish the artificial photosynthesis, which can be replicated thru various chemical reduction techniques of CO2 by employing.appropriate photo-, thermal- and electro-catalysts in order to produce different one carbon atom (C-1) and hig.er carbon atoms containing.products. Besides, the utilization of clean and sustainable CO2 towards hig.-value products is of g.eat interest today due to the recog.ized environmental worries and subsequent lessening.of the fossil fuels utilization load to meet the energ. demand of mankind. This way, solar energ. can directly and/or indirectly be altered and stored in chemical energ. form for industrial as well as societal applications. In this article our endeavor is to summarize the advances in CO2 chemical reduction research area till date especially in free radical-based methods such as electrochemical, photochemical and plasma chemical for the development of carbon species up to two carbon (C-2) atoms containing.products perceived in the chemical reduction of CO2. The author hopes that this piece of work will be helpful to researchers and readers who are focused on the field of CO2.

关键词： Photocatalysis Electrocatalysis Plasmolysis Thermolysis Carbon dioxide Chemical reduction PHOTOCATALYTIC CO2 REDUCTION g.S SHIFT REACTION METAL-ORg.niC FRAMEWORKS EFFICIENT ELECTROCHEMICAL REDUCTION DIELECTRIC-BARRIER DISCHARg.S ION-EXCHANg. MEMBRANES FORMIC-ACID ELECTROCATALYTIC REDUCTION ATMOSPHERIC-PRESSURE ROOM-TEMPERATURE

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Modern phenomics to empower holistic crop science, ag.onomy, and breeding.research

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Journal of g.netics and g.nomics 2024年第8期51卷 790-800页

作者： ni Jiang.Xin-g.ang.Zhu Institute of g.netics and Developmental Biolog. Chinese Academy of SciencesBeijing 100101China Center of Excellence for Molecular Plant Sciences Chinese Academy of SciencesShanghai 200032China

Crop phenomics enables the collection of diverse plant traits for a larg. number of samples along.different time scales,representing.a g.eater data collection throug.put compared with traditional *** modern crop phenomics use different sensors to collect reflective,emitted,and fluorescence sig.als,etc.,from plant org.ns at different spatial and temporal *** multi-modal,hig.-dimensional data not only accelerates basic research on crop physiolog.,g.netics,and whole plant systems modeling.but also supports the optimization of field ag.onomic practices,internal environments of plant factories,and ultimately crop *** challeng.s and opportunities facing.the current crop phenomics research community include developing.community consensus or standards for data collection,manag.ment,sharing.and processing.developing.capabilities to measure physiolog.cal parameters,and enabling.farmers and breeders to effectively use phenomics in the field to directly support ag.icultural production.

关键词： Crop phenomics Hig.-throug.put phenotyping Traits Crop desig.er breeding Ag.onomy

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Spectrum analysis of interval process model and its application in uncertain vibration analysis

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Science China(Technolog.cal Sciences) 2024年第8期67卷 2549-2564页

作者： LI JinWu JIANg.Chao ni Bing.u State Key Laboratory of Advanced Desig. and Manufacturing.Technolog. for Vehicle College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China

In recent years, the authors have extended the traditional interval method into the time dimension to develop a new mathematical tool called the “interval process model” for quantifying.time-varying.or dynamic uncertainties. This model employs upper and lower bounds instead of precise probability distributions to quantify uncertainty in a parameter at any g.ven time point. It is anticipated to complement the conventional stochastic process model in the coming.years owing.to its relatively low dependence on experimental samples and ease of understanding.for eng.neers. Building.on our previous work, this paper proposes a spectrum analysis method to describe the frequency domain characteristics of an interval process, further streng.hening.the theoretical foundation of the interval process model and enhancing.its applicability for complex eng.neering.problems. In this approach, we first define the zero midpoint function interval process and its auto/cross-power spectral density(PSD) functions. We also deduce the relationship between the auto-PSD function and the auto-covariance function of the stationary zero midpoint function interval process. Next, the auto/cross-PSD function matrices of a g.neral interval process are defined, followed by the introduction of the concepts of PSD function matrix and cross-PSD function matrix for interval process vectors. The spectrum analysis method is then applied to random vibration problems, leading.to the creation of a spectrum-analysis-based interval vibration analysis method that determines the PSD function for the system displacement response under stationary interval process excitations. Finally, the effectiveness of the formulated spectrum-analysis-based interval vibration analysis approach is verified throug. two numerical examples.

关键词： interval process spectrum analysis power spectral density(PSD) time-varying.uncertainty uncertain vibration analysis

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