检索结果-南通市图书馆

南昌大学学报（医学版） 2019年第3期59卷 1-5,10页

作者：谢灿洪肖义坡徐建军喻东亮张文雄梁永刚魏益平南昌大学第二附属医院心胸外科南昌330006 东华理工大学化学生物与材料科学学院南昌330013 江西省质谱科学与仪器重点实验室南昌330013

目的探讨内部萃取电喷雾电离质谱(iEESI-MS)技术联合偏最小二乘法(PLS)在判定裸鼠肺癌移植瘤边界中的应用。方法建立裸鼠肺癌移植瘤模型。对裸鼠肺癌移植瘤组织和癌旁组织使用自制的取样器和iEESI-MS技术进行快速分析及进行苏木精-伊... 详细信息

目的探讨内部萃取电喷雾电离质谱(iEESI-MS)技术联合偏最小二乘法(PLS)在判定裸鼠肺癌移植瘤边界中的应用。方法建立裸鼠肺癌移植瘤模型。对裸鼠肺癌移植瘤组织和癌旁组织使用自制的取样器和iEESI-MS技术进行快速分析及进行苏木精-伊红(HE)染色,PLS分析指纹质谱数据,碰撞诱导解离实验(CID)分析化学成分。结果裸鼠肺癌移植瘤组织m/z值分别为783、799、809、833时相对丰度均高于癌旁组织,而m/z值分别为797、821时相对丰度均低于癌旁组织,差异有统计学意义(PpoPC+Na^+),m/z值799为磷脂酰胆碱钾盐(poPC+K^+)。PLS结果显示裸鼠肺癌移植瘤组织间分布较分散,而癌旁组织间聚集良好。光学显微镜下显示裸鼠肺癌移植瘤组织中癌细胞增殖活跃,排列不整齐,核深染,异形明显,而癌旁组织表现为正常细胞形态和组织结构。结论采用iEESI-MS技术联合PLS可快速区分裸鼠肺癌移植瘤组织和癌旁组织,为快速判定裸鼠肺癌移植瘤边界提供了新思路。

关键词：质谱技术快速判定肺癌移植瘤边界动物,实验裸鼠

Hierarchical Assemblies of Bottlebrush/Homopolymer Blends: Tailoring Phase Interfacial Curvature for Tunable Photonics

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2023年第13期41卷 1566-1574页

作者： Han yi Yuesheng Li Dong-po Song Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300350 China

Organized spontaneous emulsification (OSE) produces ordered water-in-oil-in-water (W/O/W) multiple emulsion droplets stabilized by bottlebrush block copolymer (BBCP) surfactants, such as (polynorbornene-g-polystyrene)-b-(polynorbornene-g-polyethylene oxide) (PS-b-PEO), templating ordered porous particles with visible structural colors. Here, homopolymer polystyrenes (hPS) were used to swell the PS domain and thus to effectively increase the W/O interfacial curvature of the internal droplets. By variation of hPS concentration, pore diameter is largely tunable from 34 to over 210 nm, leading to tunable photonic bandgaps in the whole visible spectrum. The ratio (α) of molecular weight of hPS relative to that of the PS side chains of the BBCP can greatly influence their spatial distribution within the PS domain. For α ≤ 1, uniform solubilization of the hPS chains into the side chains of BBCP is achieved leading to a homogeneous porous structure. For α > 1, local solubilization of the hPS chains at interface of the internal droplets is disclosed at relatively low concentrations of hPS (≤ 42 wt%), resulting in a small change in pore diameter. For contrast, a rapid increase of the W/O interfacial curvature was observed upon further increase of the hPS content (> 42 wt%) through an evident influence on the OSE procedure.

关键词： Block copolymer Self-assembly porous polymers Copolymers Microstructures

Study of a Dual-sided Multiple Fans System with a Piezoelectric Actuator

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 2015年第5期24卷 432-441页

作者： Hsiao-Kang Ma yi-Tseng Li Ching-po Lin Department of Mechanical Engineering Taiwan University

A dual-sided multiple fans system with a piezoelectric actuator （＂D-MFPA＂）, which is able to drive eight passive vibrating fans and provide two-directional air flows by using only one piezoelectric actuator, has been investigated in this study. Moreover, two types of the fan designs, viz. magnetic fan （MF） and composite magnetic fan （CMF） were also explored. In the investigation of the MF, the results indicated that the resonance frequency of the D-MFPA increased from 27.6 Hz to 66 Hz as the length of the carbon fiber plate （L） decreased from 55 mm to 35 mm. It also decreased the amplitude of the D-MFPA from 12.4mm to 4.8 mm. For CMF, the results showed that the resonance frequency decreased when the length of the Mylar plate （Et） increased, and the maximum decrease was from 66 Hz to 45 Hz when L= 35 mm and Er= 30 mm. Dimensionless heat convection number （MD_MFPA） was defined to describe and quantify the improvement in the thermal performance. The results showed that the optimal MO-MFPA of the single piezoelectric fan was 1,58 for cooling one heat source. By contrast, under the same power consumption, the D-MFPA not only cooled two heat sources but also displayed better thermal performance.

关键词： D-MFPA resonance frequency composite magnetic fan thermal performance

Study on products and reaction paths for synthesis of 3,4-dihydro-2H-3-phenyl-1,3-benzoxazine from phenol,aniline and formaldehyde

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2015年第3期26卷 348-352页

作者： Cheng-Xi Zhang Yu-Yuan Deng yi-Yang Zhang po Yang yi Gu State Key Laboratory of polymer Materials Engineering College of Polymer Science and EngineeringSichuan University

To study the synthesis of 3,4-dihydro-2H-3-phenyl-1,3-benzoxazine（benzoxazine）,the reaction paths of phenol,aniline and formaldehyde were investigated by analyzing the synthesis crude *** the aid of high-performance liquid chromatography（HPLC）,chromatographic column and preparative HPLC,seven compounds originated from the crude products were obtained and their chemical structures were *** reaction paths are proposed based on these *** show that Nhydroxymethyl aniline（HMA） derived from the reaction of formaldehyde and aniline is probably the key intermediate during the *** can react with itself or other reactants to form other intermediates,such as 1,3,5-triphenyl-1,3,5-triazinane and 2-（（phenylamino）methyl）phenol,and further form benzoxazine and byproducts.

关键词： aniline phenol formaldehyde itself crude originated react monomer probably claimed

Optimal array layout of cylindrical baffles to reduce energy of rock avalanche

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2022年第2期19卷 493-512页

作者： BI Yu-zhang WANG Dong-po FU Xian-lei LIN yi-xiong SUN Xin-po JIANG Zhe-yuan B-Z geotechnical Company Nanjing 210096China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China College of Civil Engineering Sichuan University of Science and EngineeringZigong 643000China Jiangsu Key Laboratory of Urban Underground Engineering&Environmental Safety Institute of Geotechnical EngineeringSoutheast UniversityNanjing 210096China

The array of baffles protection structure is a flow resistance structure with good drainage,blocking,and intercepting effects on the rock *** this research,the physical model test on rock avalanches was *** parameters(column spacing,row spacing,and a number of baffles)were used as indicators to determine the optimal layout of the array of baffles for energy efficiency consumption ***,the lattice Boltzmann numerical simulation method was used to build a numerical simulation model of rock avalanches-array of the baffles-hazard-bearing body to obtain the rock’s velocity attenuation and flow trajectory avalanches in the impact baffle protection ***,the results of the physical model test and the numerical simulation were mutually *** following conclusions were drawn through two methods of physical model test and numerical simulation.(1)The optimal layout parameters of array of baffles were determined as three rows of array of baffles(The number of baffles in each row is 7,8,9),column spacing Sc=3.5,and row spacing Sr=4.5.(2)Under the conditions of high baffle density(such as Sc=1.5,2.5),the rock avalanches would produce a certain degree of circumfluence,which would increase the fluid velocity by at least 24.5% over the average velocity,so the column spacing density should be increased appropriately to achieve the optimal effect of reducing the energy of rock avalanches.(3)In the event of a prototype grooved rock avalanches with a velocity close to 24.5 m/s and a flow depth of about 1.5 m,the three-row array of baffles protection with the parameters Sc^(*)=1.18 m and Sr^(*)=1.51 m could be arranged,playing the role of optimizing the array of baffles to guide the flow and block the energy *** experiments can be used to replace laboratory experiments to some *** Lattice Boltzmann method-Discrete element method(LBM-DEM)studies are required before applications to practical engineering.

关键词： Lattice Boltzmann Physical model Numerical simulation Energy consumption optimization

Highly efficient tandem Z-scheme heterojunctions for visible light-based photocatalytic oxygen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Water Science and Engineering 2020年第4期13卷 299-306页

作者： yi Lu Xing-kai Cui Cheng-xiao Zhao xiao-fei Yang College of Science Nanjing Forestry UniversityNanjing 210037China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China

Oxygen is important in maintaining a clean and reliable water *** heterojunction photocatalysts that can evolve oxygen from water splitting through an artificial Z-scheme pathway is a promising strategy for solving environmental *** this study,flower-like MoS2 nanostructures were fabricated via a simple hydrothermal process,and the electrostatic-based assembly ion-exchange method was used to construct a tandem Ag3po4/MoS2/g-C3N4(AMC)*** as-synthesized photocatalyst exhibited significant improvements in harvesting visible light and transporting charge ***,the catalyst that was similar to the Z-scheme with intimate interface contact exhibited a strong oxygen evolution *** oxygen evolution activity of the optimal AMC-10 catalyst was approximately 11 times that of the pristine *** results indicated that addition of a small amount of the flower-like MoS2 could significantly enhance the efficiency of oxygen evolution by the *** findings in this study provide an alternative pathway for rationally designing efficient oxygen-evolving photocatalysts in order to improve the quality of water and rehabilitate the water environment.©2020 Hohai *** and hosting by Elsevier *** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Z-scheme Graphitic carbon nitride MoS2 Ag3po4 Oxygen evolution reaction Water splitting

Indicator of climate variability:low treeline displacement in arid valleys of mountain areas,China

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2023年第11期20卷 3250-3265页

作者： YAN Wei-po WANG Qing GUO Ya-lin HU Qi YANG Min AN yi-da School of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China Sichuan Academy of Environmental policy and Planning Chengdu 610041China

As climate change intensifies,finding an ecological indicator to quickly and accurately reflect the impact on mountain ecosystems is *** low treeline/timberline,highly sensitive to climate variability and changes significantly within 5–10years,provides a new way to study the response to regional climate *** study explored the distribution and vertical displacement patterns of the low treeline in the Upper Minjiang River of China,using SpoT remote sensing images in 1999 and 2013and long-term positional *** the Geodetector model,the study investigated the dominant climatic factors influencing the low treeline *** results showed that the low treeline was located at 1700–3200 m elevation on sunny slopes(southeast,south,southwest,and west slopes)with slopes over 25°.From 1999 to 2013,the low treeline moved downward by 6 m from 2561±264m to 2555±265 m,along with a warm–humid climate *** downward displacement was greater on slopes over 25°and shady slopes(-20 m and-10 m,respectively)than on slopes≤25°and sunny ***,the downward was greater in the warm and humid Zagunao River Basin(-15 m)compared to the arid valley center(-7 m)and the cold Heishui River Basin(-3 m).Meanwhile,the low treeline displacement correlated negatively with precipitation and relative humidity variations at the significance level of 0.05,with correlation coefficients of-0.572and-0.551,*** in relative humidity and temperature significantly affected the spatial differentiation of low treeline displacement with influencing power of 0.246(p=0.036<0.05)and 0.183(p=0.032<0.05),***,the low treeline is a moisture-limited line,and its formation and variation are closely related to regional water–heat *** study clarifies the indicative value of the low treeline for climate variability in mountain areas and can provide references for ecological restoration in arid valleys.

关键词： Low treeline Moisture-limited line Climate variability Remote sensing interpretation Geo-detector Arid valley

Experimental Study of Overtopping on Sea Dikes and Coastal Flooding Under the Coupled Processes of Tides and Waves

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2022年第3期36卷 413-426页

作者： LI Yan-ting ZENG Cheng-jie Zhao yi-han HU po SUN Tian-ting HOU yi-jun MO Dong-xue WANG Deng-ting School of Civil Engineering Tianjin UniversityTianjin 300350China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research InstituteNanjing 210029China Water Resources Department of Jiangsu Province Nanjing 210029China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

Storm surges are cataclysmic natural disasters that occur along the coasts and are usually accompanied by large *** effects of coupled storm surges and waves can pose a significant threat to coastal *** labo-ratory studies on the effects of storm surges and waves on coastal structures have typically utilized steady water levels and constant wave *** indoor simulation of the coupled processes of tides and waves is developed by adding a tide generation system to an existing laboratory wave basin to model continuous dynamic tide levels so that tide generation and wave-making occur synchronously in the *** experimental methods are given,which are applied to further study waves overtopping on artificial sea dikes and coastal flooding evolution under the coupled actions of tides and *** results of the overtopping discharge obtained by the test with a dynamic water level are compared with those obtained from steady water level tests and the existing empirical *** addition,the impacts of ecological coastal shelterbelts and structures on coastal flood processes and distributions are also *** proposed simulation methods provide a new approach for studying the effects of storm surges and waves on coastal *** study also aims to provide a reference for coastal protective engineering.

关键词： storm surge water level variation wave overtopping coastal flooding experimental technique

Experimental Study on Scouring and Silting Deformation of Artificial Beach Under Storm Surge−Wave Coupling

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2022年第1期36卷 65-75页

作者： SUN Tian-ting HU po PAN Jun-ning HOU yi-jun MO Dong-xue WANG Deng-ting Nanjing Hydraulic Research Institute Nanjing 210029China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing 210029China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

With the increasing construction of artificial beach in coastal areas, it is of practical significance to study the beach surface deformation of artificial beach profile. Previous studies only focus on a single wave dynamic factor, and it is difficult to predict the beach deformation of artificial beach profile under the storm surge-wave co-action. To solve this problem, the cross-section physical model test method was used to study the beach surface deformation of a typical artificial beach profile in Shuangdao Bay, Weihai, Shandong Province, after continuous wave actions till they stabilize. The characteristics of beach surface deformation under the conditions of constant water levels, laddershaped water level combined with corresponding wave elements and storm surge-wave co-action are compared and analyzed. A beach profile model which satisfies the theory of Bruun model is proposed. The test results show that the maximum scour depth of beach under storm surge-wave co-action is smaller and the scour range is obviously larger than that under the condition of constant water levels or ladder-shaped water level. The evaluation of the maximum scour depth by traditional model test tends to be conservative while the evaluation of the scour range is *** research results can provide scientific reference for designing artificial beaches.

关键词： artificial beach scouring and silting deformation profile shape physical model tests storm surge-wave coupling