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Evaluation of Rice Seedling Tolerance to Constant and Intermittent Low Temperature Stress

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Rice science 2012年第4期19卷 295-308页

作者： Sang-Ic KIM Dong-min KIM thomas h.tai USDA-ARS Crops Pathology and Genetics Research Unit Department of Plant Sciences-Mail Stop 1University of CaliforniaDavisCA 95616USA Department of Agronomy Chungnam National UniversityDaejeon 305-764Republic of Korea

M202, IR50 and advanced backcross （BC4F6） lines carrying the cold tolerance QTLs qCTS4 and qCTS12 were evaluated using three low temperature stress assays （constant, intermittent and constant with recovery period）. Under constant stress, two BC4F6 lines （MIb 4853-9 and MIb 6885-2） exhibited differences in seedling growth and accumulation of stress-related compounds although both carry the two QTLs in the IRS0 background. Differences between these lines were also observed in the constant with recovery period assay, although both of them performed comparably under intermittent stress, MIb 6885-2 performed more similarly to M202 in the constant and constant with recovery period assays, suggesting that this line contains an introgressed region（s） not present in MIb 4853-9. The three assays were also applied to assess variations in cold tolerance in a set of diverse germplasms. Performance metrics and visual ratings were comparable for evaluating tolerance to constant stress. however, differences in response to intermittent stress were more evident from growth and total chlorophyll measurements than from visual ratings. With regard to the constant with recovery period assay, about 15% of the germplasm accessions did not recover. however, some lines which exhibited chilling injuries of comparable severity were able to overcome them. This recovery phenotype may improve rice performance in the field and warrant further investigation.

关键词： rice seedling cold tolerance quantitative trait locus advanced backcross line low temperature stress

Establishment of nucleation and growth model of silica nanostructured particles and comparison with experimental data

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Chinese Journal of Chemical Engineering 2022年第10期50卷 379-388页

作者： Yubai Liu Zhiyuan Yu thomas Pelster Ting-tai Lee Yujun Wang Guangsheng Luo State Key Lab of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Evonik Operations Gmbh Brühler Straße 2Wesseling 50389Germany Evonik Specialty Chemicals(Shanghai)Co. Ltd.Shanghai 201108China

A mathematical model is developed for the calculation of the nucleation and growth process of silica nanostructured particles prepared by using the drop-by-drop method,and the calculation results of the proposed model is compared with the experimental value obtained from SAXS *** model provides a non-ideal improvement in the supersaturation calculation and considers the impact of both mass transfer and surface reaction on the particle growth *** nucleation and growth rates are coupled depending on the change in monomer concentration over time,based on which the particle size and distribution are *** growth curve of the silica particles from 3 nm to 20 nm and the change in particle number from 0 to over 10^(20) are calculated,which are consistent with the experimental values,establishing the reliability of the *** calculations of the growth rate reveal that mass transfer controls the growth of silica particles before 10 min and the surface reaction is the rate-determining step after 10 *** changes in the model parameters obtained by fitting with the SAXS data under different reaction conditions indicate the sensitivity of the corresponding process to different ***,the relationship between the particle growth rate and monomer concentration change is analyzed using the proposed model.

关键词： Silica Nucleation Growth Mathematical modeling Mass transfer Surface reaction

An Adjusted Gray Map Technique for Constructing Large Four-Level Uniform Designs

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Journal of Systems Science & Complexity 2023年第1期36卷 433-456页

作者： ELSAWAh A M VIShWAKARMA G K MOhAMED h S FANG Kai-tai Department of Statistics and Data Science Faculty of Science and TechnologyBeijing Normal University-Hong Kong Baptist University United International CollegeZhuhai 519087China Guangdong Provincial Key Laboratory of Interdisciplinary Research and Application for Data Science BNU-HKBU United International CollegeZhuhai 519087China Department of Mathematics Faculty of ScienceZagazig UniversityZagazig 44519Egypt Department of Mathematics&Computing Indian Institute of Technology DhanbadDhanbad 826004India College of Transportation and Civil Engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China The Key Lab of Random Complex Structures and Data Analysis The Chinese Academy of SciencesBeijing 100190China

A uniform experimental design(UED)is an extremely used powerful and efficient methodology for designing experiments with high-dimensional inputs,limited resources and unknown underlying models.A UED enjoys the following two significant advantages:(i)It is a robust design,since it does not require to specify a model before experimenters conduct their experiments;and(ii)it provides uniformly scatter design points in the experimental domain,thus it gives a good representation of this domain with fewer experimental trials(runs).Many real-life experiments involve hundreds or thousands of active factors and thus large UEDs are *** large UEDs using the existing techniques is an NP-hard problem,an extremely time-consuming heuristic search process and a satisfactory result is not *** paper presents a new effective and easy technique,adjusted Gray map technique(AGMT),for constructing(nearly)UEDs with large numbers of four-level factors and runs by converting designs with s two-level factors and n runs to(nearly)UEDs with 2^(t−1)s four-level factors and 2tn runs for any t≥0 using two simple transformation *** justifications for the uniformity of the resulting four-level designs are given,which provide some necessary and/or sufficient conditions for obtaining(nearly)uniform four-level *** results show that the AGMT is much easier and better than the existing widely used techniques and it can be effectively used to simply generate new recommended large(nearly)UEDs with four-level factors.

关键词： Aberration adjusted Gray map technique Gray map technique hamming distance moment aberration threshold accepting algorithm uniform design

Efficient photocatalytic reduction of CO2 to formate by a molecular noble metal-free system

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Science China Chemistry 2025年第1期 152-156页

作者： Lihua Zhang Lingjing Chen huatian Shi Yue Wei Gui Chen tai-Chu Lau School of Environment and Civil Engineering Research Center for Eco-environmental Engineering Dongguan University of Technology Department of Chemistry and Institute of Molecular Functional Materials City University of Hong Kong

Reducing CO2to carbon-neutral solar fuels can not only alleviate the energy demand but also mitigate the greenhouse *** present,developing an efficient non-noble metal photo/electrocatalytic system for converting CO2to a specific product beyond CO is still a big ***,we report a new cobalt complex bearing 2,2′-bi-1,10-phenanthroline ligand that can photocatalytically reduce CO2to formate （hCOO-）.Turnover number （TON） for hCOO-up to 677 with 99%selectivity can be achieved using organic dyes purpurin as photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1h-benzo[d]imidazole （BIh） as sacrificial reductant in a CO2-saturated NMP/TEA （v/v,3:1） solution under visible light *** potential electrolysis at-1.41 V （***/Ag Cl） in the presence of 12 m M Et3NhBF4also produced hCOO-with Faradaic efficiency of 39%.Spectroscopic and electrochemical studies suggest that a[CoI-h]species is the key intermediate for CO2reduction.

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Construction of PdS@MIL-125-Nh_(2)@ZnS type-Ⅱ heterostructure with efficient charge separation for boosted photocatalytic hydrogen evolution

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Journal of Materials Science & Technology 2023年第14期145卷 116-124页

作者： Zige tai Guotai Sun Ting Wang Zhihui Li Jinge tai Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China The Second Affiliated hospital of Air Force Military Medical University Xi’an 710038China

A new photocatalyst,PdS@Nh_(2)-MIL-125(Ti)@ZnS(PdS/M125/ZnS)heterojunction is fabricated for photo-catalytic h_(2)generation for the first time,where PdS nanoparticles are anchored in the pore of M125 by utilizing its confinement effect,and the ZnS is closely wrapped on the surfaces of the *** optimal photocatalyst exhibits a significantly enhanced h_(2)generation rate of 1164.2μmol/g/h,while the pure M125 only displays a h_(2)generation rate of 16.7μmol/g/*** resultant improvement can be ascribed to the following comprehensive *** hierarchical structure built by PdS,M125,and ZnS can form lots of intimate interfaces,offer abundant sites for reaction,and smooth channels for charge carri-ers due to the porous characteristics of ***,M125 and ZnS with inner defect levels form an analogous type-II heterojunction assisted by PdS co-catalyst,which greatly promotes charge *** work may supply a new avenue to design MOFs photocatalysts for energy conversion.

关键词： hydrogen evolution Water splitting Metal-organic framework Defect levels Type-II heterostructure

System Dynamic Modelling of Patient Flow and Transferral Problem in a Mixed Public-Private healthcare System:A Case Study of hong Kong SAR

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Journal of Systems Science and Systems Engineering 2020年第5期29卷 590-608页

作者： C.K.M.LEE W.C.tai Kam K.h.NG Department of Industrial and Systems Engineering The Hon g Kong Polytechnic UniversityHung HornHong Kong SARChina School of Mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

The current healthcare system in hong Kong is experiencing pressure due to constrained resources,with dramatic increases in inpatient services queue lengths,dissatisfaction with the working environment,unacceptable workforce arrangements and high turnover rate of hospital *** maintain the robustness of the healthcare system and a sustainable inpatients flow,the Food and health Bureau launched a public-private partnership programme to utilise the resources of the public and private *** research investigates the potential for extension of the programme and further enhancing the sustainability of the long-term inpatient services under a mixed public-private healthcare policy via system dynamic *** findings show that an increase of human resources in public hospitals does not substantially improve inpatient flow rate ***,the results from the system dynamic approach provide insights into the expansion of the service areas of the programme and suggest increasing the number of referrals to private hospitals.

关键词： System dynamic models scenario analysis inpatient transferral mixed public-private healthcare system

Topological Entropy of a Graph Map

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Acta Mathematica Sinica,English Series 2018年第2期34卷 194-208页

作者： tai Xiang SUN Guangxi Key Laboratory Cultivation Base of Cross-border E-commerce Intelligent Information Processing Guangxi University of Finance and Economics

Let G be a graph and f： G → G be a continuous map. Denote by h（f）, P（f）, AP（f）, R（f） and w（x, f） the topological entropy of f, the set of periodic points of f, the set of almost periodic points of f, the set of recurrent points of f and the w-limit set of x under f, respectively. In this paper, we show that the following statements are equivalent：（1） h（f）〉 O. （2） There exists an x ∈ G such that w（x, f） ∩ P（f） ≠θ and w（x, f） is an infinite set. （3） There exists an x ∈ G such that w（x, f） contains two minimal sets. （4） There exist x, y ∈G such that w（x, f） - w（y, f） is an uncountable set andw（y,f）∩w（x,f）≠θ. （5） There exist anx C Gand a closed subset A w（x,f） with f（A） A such that w（x,f） - A is an uncountable set. （6） R（f） - nP（f） ≠θ. （7） f｜P（f） is not pointwise equicontinuous.

关键词： Topological entropy periodic point w-limit set recurrent point

Influence of Isoflavones on Cadmium-induced Adverse Effects in Vascular Endothelial Cells (ECV 304)

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Biomedical and Environmental Sciences 2005年第3期18卷 146-152页

作者： JUEChEN tai-YIJIN DepartmentofOccupationalhealthandToxicology SchoolofPublicHealthFudanUniversityShanghai200032China

Objective To study the possible intervention of isoflavones in cytotoxicity induced by cadmium in vascular endothelial cells. Methods An ECV 304 cell line derived from human umbilical vein endothelial cells was adopted. Genistein / daidzein was added prior to or simultaneously with CdCl2, cell viability was determined by MTT assay, and metallothionein mRNA expression was monitored by RT-PCR method. Results Cell viability was higher in isoflavone and CdCl2 co-treated groups than that in CdCl2 treated group, with CdCl2 concentration at 10, 20, 40, and 80 μmol/L, respectively. however this increase was not observed in the group treated with CdCl2 at a concentration of 60 μmol/L. Isoflavones (10-10 mol/L to 10-5 mol/L) were added 24 h before cells were challenged with 80 μmol/L CdCl2 for 24 h or simultaneously with 80 μmol/L CdCl2. Genistein increased cell viability only at 10-5 mol/L, while daidzein caused a dose-dependent increase from 10-10 mol/L to 10-5 mol/L in co-treatment with CdCl2. In pre-treatment, genistein (10-7 to 10-5 mol/L) increased cell viability whereas only 10-5 mol/L of daidzein exerted protection. Apparent protection could be found when the cells were pre-treated with 10-5 mol/L isoflavones for over 12 h, whereas 24 h incubation was required in such a co-treatment, with the exception of daidzein that had a significant protection in only 3 h. Isoflavones (10-6 mol/L) incubated for 3 h to 24 h, increased MT IIA and MT IF mRNA expression, but the induction could not last for more than 24 h. Co-treatment with isoflavones could induce an additional induction of MT IIA mRNA expression in cells exposed to cadmium. however, the additional induction of MT IIA and MT IF mRNA was not seen when pre-treatment was carried out with isoflavones, with the exception of an increase in MT IIA mRNA expression in the daidzein pre-treated group. Conclusion Genistein/daidzein could reverse the cytotoxicity of cadmium either in pre-treatment or in co-treatment. The protecti

关键词： Isoflavone Cadmium Cytotoxicity Metallothionein Vascular endothelial cells

Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS)-a fine balance

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hepatobiliary Surgery and Nutrition 2023年第2期12卷 269-271页

作者： Kai tai Derek Yeung Mikael h.Sodergren Department of Surgery and Cancer Imperial College LondonLondonUK

We read with interest the paper by Li et ***“Associating liver partition and portal vein ligation for staged hepatectomy versus sequential transarterial chemoembolization and portal vein embolization in staged hepate... 详细信息

关键词： hepatitis B virus(hBV) hepatocellular carcinoma(hCC) portal vein embolization(PVE) associating liver partition and portal vein ligation for staged hepatectomy(ALPPS)