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Ceuthonoe nezhai *** sp.n.(Polynoidae:Polynoinae)commensal with sponges from Weijia Guyot,western Pacific

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Acta Oceanologica Sinica 2021年第12期40卷 90-103页

作者： Yueyun.wang Yadong Zhou Chunsheng wang Second Institute of Oceanography Ministry of Natural ResourcesHangzhou 310012China Key Laboratory of Marine Ecosystem Dynamics Ministry of Natural ResourcesHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China

Ceuthonoe,a new genus with type species *** *** with euplectellid glass sponge(Hexactinellida:Euplectellidae),is described and illustrated,based on the material collected from Weijia Guyot,western *** new genus is distinguished by a combination of characters:body with 32 segments;14 pairs of elytra;prostomium with prominent cephalic peaks and facial tubercle;aciculae and chaetae on tentaculophores;biramous parapodium,each ramus with a long aciculum penetrating epidermis,without supraor subacicular process;and noto-and neurochaetae with unidentate *** *** mostly silimar to genera of Polynoinae in *** the phylogenetic analysis based on cytochrome c oxidase subunit I,16 S,18 S,and 28 S genes suggested that this new genus was separated from the main branch of *** study also discussed the genera related to the new genus.

关键词： new genus new species Polynoidae taxonomy

Shear-horizontal waves in periodic layered nanostructure with both nonlocal and interface effects

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Applied Mathematics and Mechanics(English Edition) 2020年第10期41卷 1447-1460页

作者： Ru TIAn Jinxi LIU E.n.PAn Yuesheng wang Institute of Engineering Mechanics Beijing Jiaotong UniversityBeijing 100044China Department of Civil Engineering University of AkronAkronOH 44325-3905U.S.A. Department of Engineering Mechanics Shijiazhuang Tiedao UniversityShijiazhuang 050043China Hebei Key Laboratory of Mechanics of Intelligent Materials and Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China

The propagation of shear-horizontal(SH)waves in the periodic layered nanocomposite is investigated by using both the nonlocal integral model and the nonlocal differential model with the interface *** on the transfer matrix method and the Bloch theory,the band structures for SH waves with both vertical and oblique incidences to the structure are *** is found that by choosing appropriate interface parameters,the dispersion curves predicted by the nonlocal differential model with the interface effect can be tuned to be the same as those based on the nonlocal integral ***,by propagating the SH waves vertically and obliquely to the periodic layered nanostructure,we could invert,respectively,the interface mass density and the interface shear modulus,by matching the dispersion *** are further shown on how to determine the interface mass density and the interface shear modulus in theory.

关键词： shear-horizontal(SH)wave nonlocal theory interface effect nanostructure integral model differential model

Poly(methyl methacrylate)/Poly(n-isopropylacrylamide) Core-Shell Particles Prepared by Seeded Precipitation Polymerization: Unusual Morphology and Thermo-sensitivity of Zeta Potential

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Chinese Journal of Polymer Science 2014年第5期32卷 524-530页

作者：石山 Yang Yu Tao wang Qian-man.wang Chun.wang Shin-ichi Kuroda College of Materials Science and Engineering Shenyang University of Chemical Technology Department of Production Science and Technology Faculty of Engineering Gunma University

Poly（methyl methacrylate）/poly（n-isopropylacrylamide）（PMMA/PnIPAM） core-shell particles were synthesized by seeded precipitation polymerization of n-isopropylacrylamide （nIPAM） in the presence of PMMA seed particles. The anionic potassium persulfate was used as initiator, and acrylic acid as functional comonomer. It was shown that the weight ratio of the PnIPAM shell to the PMMA core can be greatly increased through continuous addition of nIPAM monomer at a relatively slow rate. PMMA/PnIPAM particles with different shell thickness were obtained by varying the amount of charged nIPAM monomers. These particles exhibited unique nonspherical core-shell morphology. PMMA core was partially coated by dense hair-like or antler-like PnIPAM shell depending on the shell thickness. The measurement of these particles＇ zeta potential at different temperatures showed that the absolute value of zeta potential unusually decreased as the particle size decreased with temperature.

关键词： Core-shell particle Thermo-sensitive Seeded precipitation polymerization Synthesis.

Characterization of dissolved organic matter as n-nitrosamine precursors based on hydrophobicity, molecular weight and fluorescence

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Journal of Environmental Sciences 2013年第1期25卷 85-95页

作者： Chengkun.wang Xiaojian Zhang Jun.wang Chao Chen School of Environment Tsinghua University

It is very important to identify the dominant precursors for n-nitrosamine formation from bulk organic matter, to enhance the understanding of n-nitrosamine formation pathways in water treatment plants and allow the development of practical treatment technologies. In this study, dissolved organic matter （DOM） from two source waters was fractionated with XAD resins and ultra- filtration membranes. The n-nitrosamine formation potential （FP）（ng of n-nitrosamines formed per mg of dissolved organic carbon （DOC）） from raw water and each fraction were measured and correlated with the fluorescence excitation-emission matrix （EEM）, molecular weight （MW） and other assays. The results showed that the hydrophilic fraction had n-nitrosamine FP 1.3 to 3.5 times higher than the hydrophobic fraction from both source waters. The DOM fraction with low MW was the dominant fraction in these two source waters and contributed more precursors for n-nitrosamine formation than the larger MW fraction. The EEM spectra indicated there were notable amounts of soluble microbial products （SMPs） and aromatic proteins in the two studied rivers, which probably originated from wastewater discharge. The SMPs tended to be more closely correlated with n-nitrosodimethylamine formation potential than the other DOM components. Higher n-nitrosamine FP were also related to fractions with lower DOC/DOn ratios and lower SUVA254 values.

关键词： n-nitrosamine hydrophobicity molecular weight fluorescence excitation-emission matrix soluble microbial products

Equilibrium Joining Strategies in the M/M/1 Queues with Setup Times under n-Policy

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Journal of Systems Science and Systems Engineering 2019年第2期28卷 141-153页

作者： Yaqian Hao Jinting wang Zhongbin.wang Mingyu Yang Department of Mathematics Beijing Jiaotong University Beijing 100044 China

This paper carries out a game-theoretic analysis of a single-server queueing system with setup times under n-policy by considering both the partially observable and the partially unobservable information scenarios. The server switches off whenever the system becomes empty, and is resumed when the number of customers reaches a certain threshold value. Customers decide whether to join or to balk the system upon arrival based on their available information. The equilibrium joining strategy of customers as well as the systemzs performance measures are derived under different information levels. We find that both Follow-the-Crowd (FTC) and Avoid-the-Crowd (ATC) behaviors exist in our system. numerical results show that the social welfare is unimodal in the threshold, and is decreasing in the waiting cost.

关键词： M/M/1 queue setup time n-policy equilibrium information

Site-specific n-glycosylation characterization and allergenicity analysis of globulin-1 S allele from wheat

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Food Science and Human Wellness 2023年第5期12卷 1601-1608页

作者： Linglin Fu Rongrong wang Jinru Zhou Chong wang Yanbo wang Food Safety Key Laboratory of Zhejiang Province School of Food Science and BiotechnologyZhejiang Gongshang UniversityHangzhou 310018China Zhejiang Engineering Research Institute of Food&Drug Quality and Safety School of Management and E-BusinessZhejiang Gongshang UniversityHangzhou 310018China

n-glycans in many proteins are of great concern because of their strong association with food allergies. Triticum aestivum(bread wheat), a major food crop, is known as one of the “Big Eight” allergenic groups. However, little research has been done about n-glycans in wheat glycoproteins. In this study, a soluble wheat glycoprotein was purified from wheat and further identified as globulin-1 S allele(GSA). The wheat GSA displayed significant IgE-binding activity. Moreover, one n-glycosylation site and 6 kinds of n-glycans were identified by mass spectrometry, including 3 high mannose types and 3 complex types. Furthermore, the IgE-binding activity of wheat GSA is proved to be reduced by the removal of n-glycan, thermal treatment(temperatures > 80 ℃), and strong acidic treatment(pH 3.0). These findings would provide a better understanding of the effects of n-glycosylation, thermal treatment, and acidic treatment on the molecular characteristics of GSA, and further provide new insights into the development of hypoallergenic wheat products.

关键词： Triticum aestivum Allergen Glycoprotein n-glycans n-glycosylation C_(18)-RPLC-MS/MS

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Inter-facet composition modulation of III-nitride nanowires over pyramid textured Si substrates by stationary molecular beam epitaxy

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nano Research 2021年第5期14卷 1502-1511页

作者： Peng wang Hedong Chen Hao wang Dan.wang Changkun Song Xingyu wang Hongjie Yin Lujia Rao Guofu Zhou Richard nötzel Guangdong Provincial Key Laboratory of Optical Information Materials and Technology South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou510006China national Center for International Research on Green Optoelectronics South China Normal UniversityGuangzhou510006China Department of Physics Xiamen UniversityXiamen361005China Analysis&Testing Center South China Normal UniversityGuangzhou510631China Academy of Shenzhen Guohua Optoelectronics Shenzhen518110China

InGan nanowires (nWs) are grown on pyramid textured Si substrates by stationary plasma-assisted molecular beam epitaxy (PA-MBE). The incidence angles of the highly directional source beams vary for different pyramid facets, inducing a distinct inter-facet modulation of the In content of the InGan nWs, which is verified by spatial element distribution analysis. The resulting multi-wavelength emission is confirmed by photoluminescence (PL) and cathodoluminescence (CL). Pure Gan phase formation dominates on certain facets, which is attributed to extreme local growth conditions, such as low active n flux. On the same facets, InGan nWs exhibit a morphology change close to the pyramid ridge, indicating inter-facet atom migration. This cross-talk effect due to inter-facet atom migration is verified by a decrease of the inter-facet In content modulation amplitude with shrinking pyramid size. A detailed analysis of the In content variation across individual pyramid facets and element distribution line profiles reveals that the cross-talk effect originates mainly from the inter-facet atom migration over the convex pyramid ridge facet boundaries rather than the concave base line facet boundaries. This is understood by first-principles calculations showing that the pyramid baseline facet boundary acts as an energy barrier for atom migration, which is much higher than that of the ridge facet boundary. The influence of the growth temperature on the inter-facet In content modulation is also presented. This work gives deep insight into the composition modulation for the realization of multi-color light-emitting devices based on the monolithic growth of InGan nWs on pyramid textured Si substrates.

关键词： pyramid textured Si substrate composition modulation III-nitride nanowire molecular beam epitaxy stationary growth cross talk

Peroxyacetyl nitrate measurements by thermal dissociation-chemical ionization mass spectrometry in an urban environment： performance and characterizations

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Frontiers of Environmental Science & Engineering 2017年第4期11卷 145-152页

作者： Xinfeng wang Tao wang Likun Xue Wei nie Zheng Xu Steven C. n. Poon Wenxing wang Environment Research Institute Shandong University Jinan 250100 China Department of Civil and Environmental Engineering Hong Kong Polytechnic University Hong Kong 999077 China Institute for Climate and Global Change Research & School of Atmospheric Sciences Nanjing University Nanjing 210023 China

Peroxyacetyl nitrate （PAn） is an important indicator of photochemical smog and has adverse effects on human health and vegetation growth. A rapid and h!ghly selective technique of thermal dissociation chemical ionization mass spectrometry （TD-CIMS） was recently developed to measure the abundance of PAn in real time; however, it may be subject to artifact in the presence of nitric oxide （nO）. In this study, we tested the interference of the PAn signal induced by nO, evaluated the performance of TD- CIMS in an urban environment, and investigated the concentration and formation of PAn in urban Hong Kong. nO caused a significant underestimation of the PAn signal in TD-CIMS, with the underestimation increasing sharply with nO concentration and decreasing slightly with PAn abundance. A formula was derived to link the loss of PAn signal with the concentrations of nO and PAn, which can be used for data correction in PAn measurements. The corrected PAn data from TD- CIMS were consistent with those from the commonly used gas chromatography with electron capture detection, which confirms the utility of TD-CIMS in an urban environment in which nO is abundant. In autumn of 2010, the hourly average PAn mixing ratio varied from 0.06 ppbv to 5.17 ppbv, indicating the occurrence of photochemical pollution in urban Hong Kong. The tbrmation efficiency of PAn during pollution episodes was as high as 3.9 to 5.9 ppbv per 100 ppbv ozone. The efficiency showed a near-linear increase with nO, concentration, suggesting a control policy of nO,. reduction for PAn pollution.

关键词： TD-CIMS Peroxyacetyl nitrate Interference Photochemical pollution Formation efficiency

Hierarchical porous niO as a noble-metal-free cocatalyst for enhanced photocatalytic H_(2) production of nitrogen-deficient g-C_(3)n_(4)

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Rare Metals 2022年第2期41卷 396-405页

作者： Yu-Wei Liao Jing Yang Guo-Hong wang Juan.wang Kai wang Su-Ding Yan College of Chemistry and Chemical Engineering Hubei Normal UniversityHuangshi 435002China Hubei Key Laboratory of Pollutant Analysis and Reuse Technology Hubei Normal UniversityHuangshi 435002China

Graphitic carbon nitride with nitrogen vacancies(nV-g-C_(3)n_(4))as a photocatalyst has been studied in solardriven energy ***,expensive and rare noble metal co-catalysts such as Pt or Pd are required in the photocatalytic H_(2)***,the exploration of low-cost and high-performance co-catalysts to replace expensive and rare noble metals has received more and more ***,a novel hierarchical porous niO anchored on nV-g-C_(3)n_(4)is successfully *** nV-g-C_(3)n_(4)/niO photocatalysts exhibited outstanding H_(2)evolution rate under visible light irradiation in absence of noble metal *** optimized nV-g-C_(3)n_(4)/niO(the mass ratio of niO is*1.7%)achieved a maximum H2 evolution rate of 170.60 lmol·g^(-1)·h^(-1),exhibiting*8.3-fold enhancement as compared to that of *** as co-catalyst provided more active sites for photocatalytic H2 ***,on the interface of nV-g-C_(3)n_(4)/niO,an interface electric field is formed between niO and host nitrogen-vacated g-C3n4,facilitating the transfer of the photogenerated electrons from nV-g-C_(3)n_(4)to niO co-catalyst,resulting in significantly promoted migration and separation efficiency of the photogenerated charge carriers.

关键词： Graphitic carbon nitride Hierarchical porous niO Photocatalysis H_(2)evolution