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1SOME DIAGNOSTICS IN NONLINEAR REPRODUCTIVE DISPERSION MODELS显示文摘This article discusses the problem of the detection of influential cases in nonlinear reproductive dispersion models (NRDM). A diagnostic based on case\|deletion approach in estimating equations is proposed. The relationships between the generalized leverage defined by Wei et al. in 1998, statistical curvature, and the local influence of the response vector perturbations are investigated in NRDM. Two numerical examples are given to illustrate the results.Tang Niansheng 1,2 \ Wei Bocheng 1\ Wang Xueren 21 Dept. ofAppl.Math., SoutheastUniv.,Nanjing 210096.2 Adult Education College,Yunnan Univ.,Kunm ing 650091. 2000Applied Mathematics(A Journal of Chinese Universities)2000,15,1:9
2Conductive Polyaniline/Cellulose/Graphite Composite Films with High Thermal Stability and Antibacterial Activity显示文摘Functional composite films were successfully prepared from cellulose, graphite(GP), and polyaniline(PANI) using a combination of physical and chemical processes. Cellulosewasdissolved in N-methylmorpholine-N-oxide monohydrate(NMMO) and regenerated in water to form the matrix. GP was dispersed in the NMMO solvent prior to the dissolution of the cellulose, and PANI was deposited on the surfaces of the cellulose/GP films by in situ chemical polymerization. The structures of the PANI/cellusose/GP composite films were investigated using X-ray diffraction analysis, Fourier transform infrared spectroscopy, scanning electron microscopy(SEM), and SEM/energy-dispersive X-ray spectroscopy. The mechanical strengths, thermal stabilities, conductivities, and antibacterial activities of the films were studied in detail. The results showed that GP formed a multilayered structure in the cellulose matrix and that the PANI nanoparticles were tightly wrapped on the film surface. The film thickness increased from 40 mm to 100 mm after the addition of GP and PANI. The tensile strength of the composite films was 80~107 MPa, with the elongation at break being 3%~10%. The final residual weight of the composite films was as high as 65%, and the conductivity of the composite films reached 14.36 S/m. The cellulose matrix ensured that the films were flexible and exhibited desirable mechanical properties, while the GP filler significantly improved the thermal stability of the films. The PANI coating acted as a protective layer during burning and provided good electrical conductivity and antibacterial activity against Escherichia coli; both of these characteristics were slightly enhanced by the incorporation of GP. These PANI/cellulose/GP composite films should be suitable for use in electronics, antistatic packing, and numerous other applications.JingHuan Chen JinGang Liu WenTao Zhang Kun Wang XueRen Qian RunCang Sun 2017Paper And Biomaterials2017,2,1:7
3Nano-Cu2O-loaded Paper: Green Preparation and High Visible Light Photocatalytic Performance for Formaldehyde Removal显示文摘The removal of formaldehyde (HCHO) from indoor air is of great importance to reduce health risks and improve indoor air quality. In this study, nano-Cu2O-loaded paper with superior photocatalytic activity under visible light for the removal of HCHO was fabricated through a green, simple, and fast in situ synthesis method. The optimum preparation conditions for nano-Cu2O-loaded paper were as follows: 2 g (oven-dry basis) cellulose fibers, CuSO4 dosage 8 g, NaOH dosage 1.6 g, temperature 80℃, 60 min for Cu2+ absorption, and 60 min for reaction. Under the optimum conditions, the Cu2O deposition ratio approached 30% and the nano-Cu2O-loaded paper exhibited a catalytic efficiency of approximately 97% for HCHO removal. The photocatalytic capacity of nano-Cu2O-loaded paper for HCHO removal had a positive correlation with the deposition ratio of nano Cu2O particles. Excellent antibacterial property of nano- Cu2O-loaded paper against Staphylococcus aureus and Escherichia coli was also confirmed. Moreover, nano-Cu2O-loaded paper was proven to be hydrophobic.Lijian Sun Xin Xin Xianhui An Xueren Qian 2019Paper And Biomaterials2019,4,3:6
4New Insights into the Late Triassic Nadigangri Formation of Northern Qiangtang, Tibet, China: Constraints from U-Pb Ages and Hf Isotopes of Detrital and Magmatic Zircons显示文摘We report here U-Pb age and in situ Hf isotopic results for detrital and magmatic zircons from one conglomerate and four tuffite samples from the Late Triassic Nadigangri Formation across the North Qiangtang depression, Tibet. Coupled with previously published data in the region, this paper proposes new insights into the geochronological framework for the Nadigangri Formation. The deposition ages of tuffite from top to bottom in the Woruo Mountain, Quem Co and Dongqu River, are 203 Ma, 226 Ma, 221.5 Ma and 221.1 Ma, respectively. The detrital zircons yield a younger cluster of ages of 201.5–225 Ma from the conglomerate of the Quem Co Formation. The Late Triassic Nadigangri Formation defines a temporal range approximately between 201 and 225 Ma(Norian-Rhaetian), including three predominant groups of 220–225 Ma, 210–217 Ma and 201–205 Ma, which correspond with the three main rifting episodes of initial rifting, further rifting and final rifting. Positive εHf(t) value and low model ages in younger detrital zircons suggests a juvenile character. However, the Hf isotopes of magmatic zircons display the presence of reworked ancient crust with 1.1–1.8 Ga. These results provide strong constraints not only on the temporal range of the Late Triassic Nadigangri Formation, but also on the onset of the Qiangtang Mesozoic rift basin.LI Xueren WANG Jian CHENG Leli FU Xiugen WANG Yuke 2018Acta Geologica Sinica(English Edition)2018,92,4:5
5Transcriptome analysis provides insights into the regulation of metabolic processes during postharvest cold storage of loquat(Eriobotrya japonica)fruit显示文摘Loquat(Eriobotrya japonica)fruit accumulates lignin during postharvest storage under chilling conditions(0℃),while low-temperature conditioning(LTC;5℃for 6 days followed by transfer to 0℃)or heat treatment(HT;40℃for 4 h followed by transfer to 0℃)can alleviate lignification.Here we compared transcriptome profiles of loquat fruit samples under LTC or HT to those stored at 0℃at five time points from day 1 to day 8 after treatment.High-throughput transcriptome sequences were de novo assembled into 53,319 unique transcripts with an N50 length of 1306 bp.A total of 2235 differentially expressed genes were identified in LTC,and 1020 were identified in HT compared to 0℃.Key genes in the lignin biosynthetic pathway,including EjPAL2,EjCAD1,EjCAD3,4CL,COMT,and HCT,were responsive to LTC or HT treatment,but they showed different expression patterns during the treatments,indicating that different structural genes could regulate lignification at different treatment stages.Coexpression network analysis showed that these candidate biosynthetic genes were associated with a number of transcription factors,including those belonging to the AP2,MYB,and NAC families.Gene ontology(GO)enrichment analysis of differentially expressed genes indicated that biological processes such as stress responses,cell wall and lignin metabolism,hormone metabolism,and metal ion transport were significantly affected under LTC or HT treatment when compared to 0℃.Our analyses provide insights into transcriptome responses to postharvest treatments in loquat fruit.Wenli Liu Jing Zhang Chen Jiao Xueren Yin Zhangjun Fei Qingbiao Wu Kunsong Chen 2019Horticulture Research2019,6,1:3
6Composition and Distributions of Nitrogen and Phosphorus and Assessment of Eutrophication Status in the Maowei Sea显示文摘Maowei Sea(MWS) is the largest oyster maricuture bay in Southwest China. Surface water from 12 sampling sites were collected during the dry season to study the composition and distribution of different forms of nitrogen(N) and phosphorus(P) beginning from the inner bay to the bay mouth in the MWS. An improved multi-parameter eutrophication index was developed and applied for the evaluation of the water quality in the MWS. Dissolved inorganic nitrogen(DIN), dissolved organic nitrogen(DON), and particulate nitrogen(PN) averagely accounted for 11.28%, 65.32%, and 23.39% of total N(TN) pool, dissolved inorganic phosphorus(DIP), dissolved organic phosphorus(DOP), and particulate phosphorus(PP) averagely accounted for 54.58%, 30.31%, and 15.12% of total P(TP) pool, respectively. DON and DIP were respectively the dominant forms of N and P in surface water of the MWS, during the study period. Concentration trends of DIN, DIP, DOP, PN, dissolved silicate(DSi), total organic carbon(TOC), chemical oxygen demand(COD) decreased from the inner bay to the bay mouth, suggesting that the MWS may be largely influenced by land-based inputs. Based on nutrient contents and stoichiometry, it likely that phytoplankton growth in the MWS is strongly limited by DIP during the dry season. Results from the improved eutrophication index revealed that the water quality in the MWS is in a state of moderate to poor eutrophication(average EI = 0.953). The eutrophication state decreased from the inner bay to the bay mouth. Nitrate(NO3-N), DON, DIP, DOP, and DSi showed significant positive correlations with eutrophication index(r2 = 0.52 – 0.78, P < 0.05), implying that these nutrients are among the significant factors, which could be used in evaluating the eutrophication status of the MWS.LU Dongliang HUANG Xueren YANG Bin DAN Solomon Felix KANG Zhenjun ZHOU Jiaodi LAO Yanling ZHONG Qiuping WU Heng 2021Journal of Ocean University of China2021,20,2:3
7A near-complete assembly of an Arabidopsis thaliana genome显示文摘The genome sequence of Arabidopsis thaliana,a widely adopted model species,has greatly expedited plant molecular biology research.Over 20 years after the first release of the genome sequence(Arabidopsis Genome Initiative,2000),there remains unresolved gap regions that are presumably composed of highly repetitive sequences,such as telomeres,centromeres,5S rDNA clusters,and nucleolar organizerregions(NORs)containing 45S rDNA.Xueren Hou Depeng Wang Zhukuan Cheng Ying Wang Yuling Jiao 2022Molecular Plant2022,15,8:2
8Considering for the blanket structure scheme of HCCB DEMO显示文摘For the solid blanket concept of helium cooled ceramic breeder (HCCB) demonstration fusion power plant (DEMO), a feasible blanket structure with configuration 2×X is proposed as considering relatively low temperature limit of neutron multiplier beryllium pebbles. Based on that, preliminary design for the typical blanket module of HCCB DEMO has been carried out and verified by thermal-hydraulic analysis and structural analysis. Furthermore, the specific relationship of maximum temperature depended on the surface heating of blanket key part first wall (FW) is also analyzed.Zhou Zhao Zaixin Li Xiaoyu Wang Xueren Wang Kaiming Feng 2019Theoretical & Applied Mechanics Letters2019,9,3:2
9CLOSED-FORM WEIGHT FUNCTION FOR EDGE CRACK PROBLEMS显示文摘An accurate crack surface opening displacement formula for edge cracks in finite bodies hasbeen derived,and was subsequently used to develop wide-range closed-form weight functions for edge cracks.The analytical weight function is general and can be easily used to determine accurate stress intensity factorsand crack surface opening displacements for arbitrarily loaded edge cracks with high efficiency.Examples havebeen given for problems of edge crack(s)with a number of typical load conditions for illustration.Wu Xueren(X.R.Wu) (Institute of Aeronautical Materials,Beijing 100095) 1990Acta Mechanica Sinica1990,6,2:2
10A physics-based analytical solution to the surface potential of polysilicon thin film transistors using the Lambert W function 显示文摘Chen Rongsheng Zheng Xueren Deng Wanling 2007Solid-State Electronics2007,51,6:1
11Polypyrrole- coated conductive paper by vapor--phase deposition method显示文摘Qian Xueren Chen Jinghua An Xianhui 2010Appita Journal2010,63,2:1
12Preparation of flame-retardant paper using magnesium salt whisk- ers as filler显示文摘Chen Xiaoyu Qian Xueren An Xianhui 2012Appita Journal2012,65,1:1
13Statistical inference of risk difference in K correlated 2 x 2 tables with structural zero显示文摘Wang Shunfang Tang Niansheng Zhang Bo Wang Xueren 2009Pharmaceutical Statistics2009,8,:1
14Filler modification for pa- permaking with stareh/oleie acid complexes with the aid of calcium ions显示文摘Xiujie Huang Jing Shen Xueren Qian 2013Carbohydrate Polymers2013,98,1:1
15Ethylene†and fruit softening显示文摘This review is concerned with the mechanisms controlling fruit softening.Master genetic regulators switch on the ripening programme and the regulatory pathway branches downstream,with separate controls for distinct quality attributes such as colour,flavour,texture,and aroma.Ethylene plays a critical role as a ripening hormone and is implicated in controlling different facets of ripening,including texture change,acting through a range of transcriptional regulators,and this signalling can be blocked using 1-methylcyclopropene.A battery of at least seven cell-wall-modifying enzymes,most of which are synthesized de novo during ripening,cause major alterations in the structure and composition of the cell wall components and contribute to the softening process.Significant differences between fruits may be related to the precise structure and composition of their cell walls and the enzymes recruited to the ripening programme during evolution.Attempts to slow texture change and reduce fruit spoilage by delaying the entire ripening process can often affect negatively other aspects of quality,and low temperatures,in particular,can have deleterious effects on texture change.Gene silencing has been used to probe the function of individual genes involved in different aspects of ripening,including colour,flavour,ethylene synthesis,and particularly texture change.The picture that emerges is that softening is a multi-genic trait,with some genes making a more important contribution than others.In future,it may be possible to control texture genetically to produce fruits more suitable for our needs.Greg Tucker Xueren Yin Aidi Zhang MiaoMiao Wang Qinggang Zhu Xiaofen Liu Xiulan Xie Kunsong Chen Don Grierson 2017Food Quality and Safety2017,1,4:1
16Carboxymethylcellulose/alum modified precipitated calcium carbonate fillers:Preparation and their use in papermaking显示文摘Shen Jing Song Zhanqian Qian Xueren 2010Carbohydrate Polymers2010,81,:1
17Investigations on the preparation of starch/sodium oleate/alum modified precipitated cal- cium carbonate filler and its use in papermaking显示文摘Jing Shen Zhanqian Song Xueren Qian 2009Appita Jour- nal2009,62,36:1
18Carboxymethyl cellulose/alum modified precipitated calcium carbonate fillers: Preparation and their use in papermaking显示文摘Shen Jing Song Zhanqian Qian Xueren 2010Carbohydrate Polymers2010,81,54:1
19XPS characterization and percolation behavior of polyaniline-coated conductive paper显示文摘Li Jian Qian Xueren Wang Lijuan 2010BioResources2010,5,2:1
20Detection of influential observations in nonlinear models 显示文摘TANG Niansheng WEI Bocheng WANG Xueren 2002Aust N Z J Star2002,44,2:1
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