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196篇 您的检索式:作者名="Demei"
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1Rosenthal type inequalities for asymptotically almost negatively associated random variables and applications显示文摘In this paper, we establish some Rosenthal type inequalities for maximum partial sums of asymptotically almost negatively associated random variables, which extend the corresponding results for negatively associated random variables. As applications of these inequalities, by employing the notions of residual Cesàro α-integrability and strong residual Cesàro α-integrability, we derive some results on Lp convergence where 1 < p < 2 and complete convergence. In addition, we estimate the rate of convergence in Marcinkiewicz-Zygmund strong law for partial sums of identically distributed random variables.YUAN DeMei AN Jun 2009Science China Mathematics2009,52,9:50
2Effects of sulfur fertilization and short-term high temperature on wheat grain production and wheat flour proteins显示文摘The content of wheat flour proteins affects the quality of wheat flour. Sulfur nutrition in wheat can change the protein content of the flour. The inconsistency and instability of wheat grain quality during grain filling under high temperature stress(HTS) are a major challenge to the production of high-quality wheat. The effects of sulfur fertilization and HTS on wheat flour protein and its components are unknown. In this study, treatments varying two factors: sulfur fertilization and exposure to short-term HTS, at 20 days postanthesis, were applied to two wheat cultivars with differing gluten types. Plants of a stronggluten wheat(Gaoyou 2018) and a medium-gluten wheat(Zhongmai 8) were grown in pots in Beijing in 2015–2017. HTS significantly increased the contents of total protein, albumin,gliadin, glutenin, Cys, and Met in wheat kernels, but reduced grain yield, grain weight,protein yield, globulin content, and total starch accumulation. The HTS-induced increase in total protein amount was closely associated with nitrate reductase(NR) and glutamine synthetase(GS) activities in flag leaves. Sulfur fertilization increased grain and protein yields; grain weight; total protein, albumin, gliadin, glutenin, and globulin contents; protein yield; total starch; Cys, Met; and NR and GS activities. HTS and sulfur fertilization had larger effects on the strong-than on the medium-gluten cultivar. Sulfur fertilization also alleviated the negative effects of HTS on grain yield, protein yield, and starch content.Thus, growing wheat with additional soil sulfur can improve the quality of the flour.Zhiqiang Tao Xuhong Chang Demei Wang Yanjie Wang Shaokang Ma Yushuang Yang Guangcai Zhao 2018The Crop Journal2018,6,4:11
3Effects of tridimensional uniform sowing on water consumption, nitrogen use, and yield in winter wheat显示文摘Wheat is a staple crop worldwide, but yields may diminish as climate change causes increasingly unpredictable patterns of precipitation and soil nutrient availability. Farmers are thus challenged to maximize planting efficiency to increase yield, while also improving their resource use efficiency. In this study the effectiveness of tridimensional uniform sowing was tested across a range of planting densities for winter wheat crops on the North China Plain. Tridimensional uniform sowing was tested against conventional drilling at three planting densities (180 × 104, 270 × 104, and 360 × 104 plants ha 1) and assessed for water consumption, biomass, nitrogen uptake and allocation, and aspects of yield. The tridimensional uniform sowing treatment outperformed the conventional drilling treatment in most metrics and at most planting densities, while performing markedly better at higher planting densities. Water consumption decreased and nitrogen efficiency increased. Tiller number and percentage of productive tillers, leaf area index, dry weight, and yield increased without a significant decline in grain protein. Nitrogen allocation was more efficient under tridimensional uniform sowing than with conventional drilling, and also varied according to annual precipitation and planting density. Both yield and grain protein contents were significantly correlated with the amount of pre-anthesis accumu- lated nitrogen translocated from vegetative organs to kernels after anthesis. Overall, a density of 270 × 104 plants ha 1 provided the highest water use efficiency and grain yield. Tridimensional uniform sowing will benefit farmers by forming stronger overall crops, promoting the coordinated improvement of yield, nitrogen uptake and efficiency, and increasing grain protein content at higher planting densities.Zhiqiang Tao Shaokang Ma Xuhong Chang Demei Wang Yanjie Wang Yushuang Yang Guangcai Zhao Jiancang Yang 2019The Crop Journal2019,7,4:8
4High phosphate removal using La(OH)3 loaded chitosan based composites and mechanistic study显示文摘Our present study was to prepare a biomass-supported adsorbents with high adsorptive capacity and high selectivity to prevent the accelerated eutrophication in water body.To this end,different metal hydroxide(La,Zr and Fe)first was successfully loaded on chitosan microspheres.Then the quaternary ammonium group with different content was introduced into the adsorbent by polymerization.By comparison of adsorption properties,chitosanLa(OH)3-quaternary ammonium-20%(CS-La-N-20%)has strong adsorption to phosphate(160 mg/g)by immobilizing nano-sized La(OH)3 within a quaternary-aminated chitosan and it maintain high adsorption in the presence of salt ions.The pH results indicated that the CS-La-N-20%would effectively sequestrate phosphate over a wide pH range between 3 and 7 without significant La3+leaching.What’s more,adsorption capacity on the introduce of positively charged quanternary-aminated groups was significantly higher than that of the unmodified adsorbents at alkaline conditions.The column adsorption capacity reached 1300 bed volumes(BV)when phosphate concentration decreased until 0.5 mg/L at 6 BV/hr.The column adsorption/desorption reveals that no significant capacity loss is observed,indicating excellent stability and repeated use property.Characterizations revealed that phosphate adsorption on CS-La-N-20%through ligand exchange(impregnated nano-La(OH)3)and electrostatic attraction(positively charged quanternary-aminated groups).All the results suggested that CS-La-N-20%can serve as a promising adsorbent for preferable phosphate removal in realistic application.Shaopeng Zhang Yi Zhang Jie Ding Zepeng Zhang Chao Gao Muslim Halimi Hary Demey Zhen Yang Weiben Yang 2021Journal of Environmental Sciences2021,33,8:3
5Three co-located resistance genes confer resistance to leaf rust and stripe rust in wheat variety Borlaug 100显示文摘Leaf rust(LR) and stripe rust(YR) are important diseases in wheat producing areas worldwide and cause severe yield losses under favorable environmental conditions when susceptible varieties are grown. We determined the genetic basis of resistance to LR and YR in variety Borlaug 100 by developing and phenotyping a population of 198 F6 recombinant inbred lines derived from a cross with the susceptible parent Apav#1. LR and YR phenotyping were conducted for 4 and 3 seasons, respectively, at CIMMYT research stations in Mexico under artificial epidemics. Mendelian segregation analyses indicated that 3–5 LR and 2 YR genes conferred resistance in Borlaug 100. Lr46/Yr29(1 BL), Yr17(2 AS) and Yr30(3 BS) were present in the resistant parent and segregated in the RIL population based on characterization by molecular markers linked to these genes. When present alone, Lr46/Yr29 caused average 13% and 16% reductions in LR and YR severities, respectively, in RILs. Similarly, Yr17 and Yr30 reduced YR severities by 57% and 11%, respectively. The Yr30 and the Yr17 translocation were also associated with 27% and 14% reductions, respectively, in LR severity, indicating that the 3 BS and 2 AS chromosomal regions likely carry new slow rusting LR resistance genes, temporarily designated as Lr B1 and Lr B2, respectively. Additive effects of Yr30*Yr17, Yr29*Yr17 and Yr29*Yr30 on YR and LR were significant and reduced YR severities by 56%,55%, and 45%, respectively, and LR severities by 34%, 40%, and 45%, respectively. Furthermore, interaction between the three genes was also significant, with mean reductions of 70% for YR and 54% for LR severities. Borlaug 100, or any one of the 21 lines with variable agronomic traits but carrying all three colocated resistance loci, can be used as resistance sources in wheat breeding programs.Bowei Ye Ravi P.Singh Chan Yuan Demei Liu Mandeep S.Randhawa Julio Huerta-Espino Sridhar Bhavani Evans Lagudah Caixia Lan 2022The Crop Journal2022,10,2:3
6Transcriptomics and metabolomics analyses provide insights into postharvest ripening and senescence of tomato fruit under low temperature显示文摘Tomato is one of the most important vegetable crops in the world and is a model plant used to study the ripening of climacteric fleshy fruit.During the ripening process of tomato fruit,flavor and aroma metabolites,color,texture and plant hormones undergo significant changes.However,low temperatures delayed the ripening process of tomato fruit,inhibiting flavor compounds and ethylene production.Metabolomics and transcriptomics analyses of tomato fruit stored under low temperature(LT,5°C)and room temperature(RT,25°C)were carried out to investigate the effects of storage temperature on the physiological changes in tomato fruit after harvest.The results of transcriptomics changes revealed that the differentially expressed genes(DEGs)involved in tomato fruit ripening,including several kinds of transcription factors(TFs)(TCP,WRKY,MYB and bZIP),enzymes involved in cell wall metabolism[beta-galactosidase(β-GAL),pectinesterase(PE)and pectate lyase(PL),cellulose and cellulose synthase(CESA)],enzymes associated with fruit flavor and aroma[acetyltransferase(AT),malic enzyme(ME),lipoxygenase(LOX),aldehyde dehydrogenase(ALDH),alcohol dehydrogenase(ADH)and hexokinase(HK)],genes associated with heat stress protein 70 and genes involved in the production of plant hormones such as Ethylene responsive factor 1(ERF1),Auxin/indoleacetic acids protein(AUX/IAA),gibberellin regulated protein.Based on the above results,we constructed a regulatory network model of the effects of different temperatures during the fruit ripening process.According to the analysis of the metabolomics results,it was found that the contents of many metabolites in tomato fruit were greatly affected by storage temperature,including,organic acids(L-tartaric acid,a-hydroxyisobutyric acid and 4-acetamidobutyric acid),sugars(melezitose,beta-Dlactose,D-sedoheptulose 7-phosphate,2-deoxyribose 1-phosphate and raffinose)and phenols(coniferin,curcumin and feruloylputrescine).This study revealed the effects of storage temperature on postharvest tomato fruit and provided a basis for further understanding of the molecular biology and biochemistry of fruit ripening.Chunmei Bai Caie Wu Lili Ma Anzhen Fu Yanyan Zheng Jiawei Han Changbao Li Shuzhi Yuan Shufang Zheng Lipu Gao Xinhua Zhang Qing Wang Demei Meng Jinhua Zuo 2023Horticultural Plant Journal2023,9,1:3
7Extrarenal Wilms’ Tumor of the Female Genital System:A Case Report and Literature Review显示文摘Extrarenal Wilms’ Tumors (ERWTs) are rare. There have been only 25 cases of ERWT arising from the female genital system reported in the literature. In this paper, we report a 60-year-old woman with a complaint of vaginal bleeding and a polypoid mass in the uterine cavity by sonography that was demonstrated as ERWT by pathology after resection. The pathological characteristics, histological origination,diagnosis, therapy and prognosis of ERWT in female reproductive system are discussed in this paper in the purpose of improving the diagnosis and therapy of this rare tumor.Minmin Cao Cuiping Huang Yafen Wang Demei Ma 2017Chinese Medical Sciences Journal2017,32,4:3
8Structure and antioxidant activity study of sulfated acetamido-polysaccharide from Radix Hedysari显示文摘Zilong Dang Demei Feng Xiaohua Liu Tao Yang Long Guo Jin Liang Jiandi Liang Fangdi Hu Fang Cui Shilan Feng 2013Fitoterapia2013,,:2
9Characterization of macrolide resistance in Mycoplasma pneumoniae isolated from children in Shanghai, China显示文摘Yang Liu Xinyu Ye Hong Zhang Xiaogang Xu Wanhua Li Demei Zhu Minggui Wang 2010Diagnostic Microbiology & Infectious Disease2010,,4:2
10Regulations of m^(6)A methylation on tomato fruit chilling injury显示文摘Tomato fruit are sensitive to chilling injury(CI)during cold storage.Several factors have been discovered to be involved in chilling injury of tomato fruit.Plant hormones play an important regulatory role,however,the relationship between chilling injury and N6-methyladenosine(m^(6)A)methylation of transcripts in plant hormone pathways has not been reported yet.In order to clarify the complex regulatory mechanism of m^(6)A methylation on chilling injury in tomato fruit,Nanopore direct RNA sequencing was employed.A large number of enzymes and transcription factors were found to be involved in the regulation process of fruit chilling injury,which were associated with plant hormone,such as 1-aminocyclopropane 1-carboxylate synthase(ACS),aspartate aminotransferase(AST),auxin response factor(ARF2),ethylene response factor 2(ERF2),gibberellin 20-oxidase-3(GA20ox)and jasmonic acid(JA).By conjoint analysis of the differential expression transcripts related to chilling injury andm^(6)Amethylation differential expression transcripts 41 differential expression transcripts were identified involved in chilling injury including 1-aminocyclopropane-1-carboxylate oxidase(ACO)and pectinesterase(PE)were down-regulated and heat shock cognate 70 kD protein 2(cpHSC70),HSP70-binding protein(HspBP)and salicylic acid-binding protein 2(SABP2)were up-regulated.Our results will provide a deeper understanding for chilling injury regulatory mechanism and post-harvest cold storage of tomato fruit.Chunmei Bai Minghuan Fang Baiqiang Zhai Lili Ma Anzhen Fu Lipu Gao Xiaohong Kou Demei Meng Qing Wang Shufang Zheng Jinhua Zuo 2021Horticultural Plant Journal2021,7,5:2
11Early diagnosis of cerebral fat embolism syndrome by diffusion-weighted MRI (starfield pattern)显示文摘Parizel PM Demey HE Veeckmans G 2001Stroke2001,32,3:1
12Radiological analysis of ankylosing spondylitis patients with severe kyphosis before and after pedicle subtraction osteotomy显示文摘Debarge R Demey C Roussanly P 0,,01:1
13The ROP2 family of Toxoplasma gondii rhoptry proteins : proteomic and genomic characterization and molecular modeling 显示文摘E1 H H Demey E Poncet J 2006Proteomics2006,6,21:1
14Early diagnosis of fat cerebral embolism syndrome by diffusion-weighted MRI ( starfield pattern) 显示文摘PARIZEL P M DEMEY H E VEWECKMANS G 2001Stroke2001,32,12:1
15The susceptibility of non-fermentative gram-negative bacilli to cefperazone and sulbactam compared with other antibacterial agents显示文摘Fu W Demei Z Shi W 2003Int J Antimicrob Agents2003,22,4:1
16The dielectric and mechanical properties of a potassium-titanate-whisker-reinforced PP/PA blend显示文摘Demei Y Tingshen W Limin Z 2000Composites Science and Technology2000,60,:1
17Sagittal balance analysis after pedicle subtraction osteotomy in ankylosing spondylitis 显示文摘Debarge R Demey G Roussouly P 2011Eur Spine J2011,205,:1
18Sagittal balance analysis after pedicle subtraction osteotomy in ankylosing spondylitis显示文摘Debarge R Demey G Roussouly P 0,,5:1
19Early diagnosis of cerebral fat embolism syndrome by diffusion-weighted MRI ( starfield pattern) 显示文摘Parizel PM Demey HE Veeckmans G 2001Stroke2001,32,12:1
20Selection of sugarcane plants resistant to SCMV显示文摘Zambrano A Y Demey J R Fuchs M 2003Plant Science2003,165,:1
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