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Rare Metals 2007年第S1期26卷 14-19页

作者： ri E H ri Hosen DOROFEEV S V KUHARENKO E b Department of Foundry and Process Metallurgy Metrology and Material Inspection LaboratoryPacific National University

The results of research on influence of an irradiation of a liquid phase by nanosecond electromagnetic impulses(NEMI) on processes of crystallization and structurization,physicomechanical and operational properties of... 详细信息

关键词： generator NEMI nanosecond electromagnetic impulses corrosion resistant heat resistance

boundedness of Commutators of θ-Type Calderón-Zygmund Operators on Non-homogeneous Metric Measure Spaces

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Chinese Annals of Mathematics,Series b 2019年第4期40卷 585-598页

作者： Chol ri Zhenqiu ZHANG Department of Mathematics Kim Hyong Jik Normal UniversityPyongYangD.P.R of Korea School of Mathematical Sciences and the Key Laboratory of Pure Mathematics and Combinatorics Nankai UniversityTianjin 300071China

Let(X, d, μ) be a metric measure space satisfying both the upper doubling and the geometrically doubling conditions in the sense of Hyt?nen. In this paper, the authors obtain the boundedness of the commutators of θ-type Calderón-Zygmund operators with RbMO functions from L∞(μ) into RbMO(μ) and from Hat1,∞(μ) into L1(μ), *** a consequence of these results, they establish the Lp(μ) boundedness of the commutators on the non-homogeneous metric spaces.

关键词： Non-homogeneous space θ-Type Calderón-Zygmund operator Commutator RbMO(μ) space Hat1,∞(μ) space

MAXIMAL L^(1)-REGULAriTY OF GENERATORS FOR bOUNDED ANALYTIC SEMIGROUPS IN bANACH SPACES

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Acta Mathematica Scientia 2022年第4期42卷 1261-1272页

作者： Myong-Hwan ri Reinhard FARWIG Institute of Mathematics State Academy of SciencesPyongyangDPR Korea Department of Mathematics Darmstadt University of TechnologyGermany

In this paper,we prove that the generator of any bounded analytic semigroup in(θ,1)-type real interpolation of its domain and underlying banach space has maximal L^(1)-regularity,using a duality argument combined with the result of maximal continuous *** an application,we consider maximal L^(1)-regularity of the Dirichlet-Laplacian and the Stokes operator in inhomogeneous b_(q),^(s),1-type besov spaces on domains of R^(n),n≥2.

关键词： Maximal L^(1)-regularity sectorial operator Stokes operator

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A note on Weil index

Science China Mathematics 2007年第7期50卷 951-956页

作者： Jing-song CHAI Xu-ri CONG Center of Mathematical Sciences Zhejiang UniversityHangzhou 310027China

Let F be a non-archimedean local field of characteristic 0 and(?)a nontrivial additive *** first defined the Weil indexγ(a,(?))(a∈F~*)in his famous paper,from which we know thatγ(a,(?))γ(b,(?))=γ(ab,(?))γ(1,(?))(a.b.andγ(a,(?))~4 =(-1,-1),where(a.b.is the Hilbert symbol for *** Weil index plays an important role in the theory of theta series and in the general representation *** this paper,we establish an identity relating the Weil indexγ(a,(?))and the Gauss sum.

关键词： Weil index Hilbert symbol local fields Gauss sum 11S15 11F27

Chlorocholine chloride and paclobutrazol treatments promote ca.b.hydrate accumulation in bulbs of Lilium Oriental hybrids 'Sorbonne'

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Journal of Zhejiang University-Science b(biomedicine & biotechnology) 2012年第2期13卷 136-144页

作者： ri-ru ZHENG Yun WU Yi-ping XIA Department of Horticulture College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310029China College of Horticulture and Forestry Sciences Huazhong Agricultural UniversityWuhan 430070China

The present study was to test the hypothesis that the plant growth retardants chlorocholine chloride(CCC) and paclobutrazol(PbZ)could improve the ca.b.hydrate accumulation in lily bulbs by enhancing photosynthetic capacity and changing endogenous *** of Lilium Oriental hybrids'Sorbonne'were treated with a foliar spray of CCC or PbZ(both at 300 mg/L)solution,at six weeks after planting(6 WAP).The morphological parameters,endogenous hormone contents(gibberellic acid(GA),abscisic acid(AbA),and indole-3-acetic acid(IAA)),and ca.b.hydrate contents were measured from 6 to 18 WAP,at 2-week *** results showed that CCC increased the biomass of leaves and stems which might produce more photoassimilates available for transportation and ***,PbZ treatment suppressed vegetative growth and favored photoassimilate transportation into bulbs.A slight delay of bud and anthesis formation was observed in both treated *** and PbZ treatments substantially enhanced the sucrose contents in leaves probably due to the increase of chlorophyll *** with CCC or PbZ decreased Ga.b.t increased IAA contents in lily bulbs which might stimulate starch accumulation and formation of new *** experiment suggested that CCC or PbZ treatment is an effective method to promote ca.b.hydrate accumulation in lily bulbs.

关键词： Ca.b.hydrate Chlorocholine chloride Gibberellic acid Lilium Oriental hybrids 'Sorbonne' Paclobutrazol

Improvement of the birch Outer bark Plywood binder:The Impact of the bark Fractional Composition and the binder Preparation Methodology

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Journal of Renewable Materials 2024年第12期12卷 2095-2113页

作者： Rūdolfs bērziņš Aigars Pāže Guntis Sosins Daniela Godiņa Laima Vēvere Jānis rižikovs Latvian State Institute of Wood Chemistry RigaLV-1006Latvia

birch outer bark(bOb)from betula pendula *** a unique and valuable biomass feedstock that contains *** biopolyester suberin is built from bifunctional fatty acids-suberinic acids(SA)-which can be obtained through a depolymerization process in an alkaline medium and used as a.b.nder due to their adhesive *** aim of this study was to develop the SA-containing binder and identify suitable pressing conditions to produce plywood that meets the shear strength requirements of the EN 314-2 standard 3rd moisture resistance class for bonding quality,ensuring durability in unprotected exterior conditions(shear strength≥1 N/mm^(2)).The raw bOb material was modified by extraction,milling,and fractionation,and the depolymerization methodology was enhanced by additional sieving to improve the adhesive properties of the obtained *** analytical methods were used to characterize the feedstock and the *** heating value was used to assess the pure outer bark content of ***-MS and GPC were used to describe the monomeric and oligomeric composition of *** was used to describe the biopolymeric composition and DSC was used to determine the thermal behavior of the *** a result,successful modification of feedstock(extracted bOb,milled through 2 mm sieve,1-2 mm fraction used)and its depolymerization process(implementing the separation of coarse ligno-ca.b.hydrate particles by 1 mm mesh sieve)was employed to obtain a.b.nder for which suitable hot-pressing parameters were determined−200℃for 5 min at 1.8 ***,plywood with shear strength of 1.26±0.18 N/mm^(2),which adheres to the EN 314-2 standards 3rd moisture resistance class,was obtained.

关键词： birch outer bark depolymerization suberinic acids binder plywood biomass feedstock renewable resources

The Proportional Hazards Model for Multiple Type Recurrent Gap Times

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Acta Mathematicae Applicatae Sinica 2016年第1期32卷 221-230页

作者： Ji-cai LIU Huan-bin LIU ri-quan ZHANG Department of Statistics East China Normal UniversityShanghai 200241China College of Mathematics and Computer Science Huanggang Normal University Huangzhou 438000China Department of Mathematics Shanxi Datong UniversityDatong 037009China

Recurrent events data and gap times between recurrent events are frequently encountered in many clinical and observational studies,and often more than one type of recurrent events is of *** this paper,we consider a proportional hazards model for multiple type recurrent gap times data to assess the effect of covaxiates on the censored event processes of *** estimating equation approach is used to obtain the estimators of regression coefficients and baseline cumulative hazard *** examine asymptotic properties of the proposed *** sample properties of these estimators are demonstrated by simulations.

关键词： proportional hazards model estimating equation multiple type recurrent events gap times semiparametric inference

biochemical Genetics of Short-Season Cotton Cultivars that Express Early Maturity Without Senescence

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Journal of Integrative Plant biology 2005年第3期47卷 334-342页

作者： Shu-XunYU Mei-ZhenSONG Shu-LiFAN WuWANG ri-HongYUAN CottonResearchInstitute ChineseAcademyofAgriculturalSciencesKeyLaboratoryofCottonGeneticImprovementMinistryofAgricultureAnyang455004China

: The present study is aimed to investigate the mechanism of the biochemical genetic in short-seasoned cotton (Gossypium hirsutum L.) (SSC). Ten cultivars from two types of SSC were selected, five SSC with no premature senescence crossed with five SSC with premature senescence. The parents, F1, and F2 from the reciprocal crosses were field tested in replication in 2001 and 2002. The results indicated that the activities of protective enzymes of the antioxidant system, such as catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD), were higher in the early maturing SSC with premature senescence compared with activities in the SSC parental cultivars that showed premature senescence, whereas the malondialdehyde (MD A) content in former group was lower than that in latter group. Various genetic variances and heritabilities for these biochemical traits and auxin (IAA), abscisic acid (AbA), and chlorophyll (Chl a.b. contents were also estimated. Significant additive variance for CAT, POD, AbA, and IAA existed, whereas CAT specific activity and SOD activity were largely controlled by dominant effects. both maternal and dominant variances played equally predominant roles in the specific activity of POD and SOD, MDA, and soluble portents. The relative contribution of the various genetic components to the phenotypic variation varied in the boll-setting period.

关键词： antioxidant enzyme biochemical trait genetic analysis short season cotton (Gossypium hirsutum L.)

Inference on Varying-Coefficient Partially Linear Regression Model

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Acta Mathematicae Applicatae Sinica 2015年第1期31卷 139-156页

作者： Jing-yan FENG ri-quan ZHANG Yi-qiang LU Department of Mathematics Shanxi Datong University Department of Statistics East China Normal University Institute of Electronic Technology the PLA Information Engineering University

The varying-coefficient partially linear regression model is proposed by combining nonparametric and varying-coefficient regression procedures. Wong, et al. （2008） proposed the model and gave its estimation by the local linear method. In this paper its inference is addressed. based on these estimates, the generalized like- lihood ratio test is established. Under the null hypotheses the normalized test statistic follows a x2-distribution asymptotically, with the scale constant and the degrees of freedom being independent of the nuisance param- eters. This is the Wilks phenomenon. Furthermore its asymptotic power is also derived, which achieves the optimal rate of convergence for nonparametric hypotheses testing. A simulation and a real example are used to evaluate the performances of the testing procedures empirically.

关键词： asymptotic normality varying-coefficient partially linear regression model generalized likelihoodratio test Wilks phenomenon xi-distribution.

Gini Correlation for Feature Screening

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Acta Mathematicae Applicatae Sinica 2021年第3期37卷 590-601页

作者： Jun-ying ZHANG Xiao-feng LIU ri-quan ZHANG Hang-WANG Department of Mathematics Taiyuan University of TechnologyTaiyuan 030024China College of Data Science Taiyuan University of TechnologyTaiyuan 030024China School of Finance and Statistics East China Normal UniversityShanghai 200241China Department of Mathematics Shanxi Datong UniversityDatong 037009China

In this paper we propose the Gini correlation screening(GCS)method to select the important variables with ultrahigh dimensional *** new procedure is based on the Gini correlation coefficient via the covariance between the response and the rank of the predictor variables rather than the Pearson correlation and the Kendallτcorrelation *** new method does not require imposing a specific model structure on regression functions and only needs the condition which the predictors and response have continuous distribution *** demonstrate that,with the number of predictors growing at an exponential rate of the sample size,the proposed procedure possesses consistency in ranking,which is both useful in its own right and can lead to consistency in *** procedure is computationally efficient and simple,and exhibits a competent empirical performance in our intensive simulations and real data analysis.

关键词： ultrahigh dimension Gini correlation coefficient variable screening feature ranking