检索结果-南通市图书馆

Effect of Fabrication Process on the Hydrophilic Properties of Porous TiO2 Thin Films for Self-Cleaning Application

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

材料科学与工程（中英文B版） 2016年第3期6卷 126-130页

作者： nguyen Thi Mai Huong nguyen Thanh Binh Le Thi Thu Huong nguyen Dinh Dung nguyen trong Tinh Institute of Applied Physics and Scientific Instruments Vietnam Academy of Science and Technology Cau Giay Dist Hanoi Vietnam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

纤维素酯膜的有机物渗透性

水处理技术 2003年第1期29卷 15-18页

作者：蔡邦肖 Quang trong nguyen Pierre Schaetzel 高从堦国家海洋局杭州水处理技术研究开发中心杭州310012 Polymers Biopolymers and Membranes Chemical Engineering Department IUT

本文研究了经丙酮水溶液改性处理后的醋酸纤维素 ( CA)反渗透 ( RO)膜的有机物渗透性。在丙酮改性处理过程 ,透过 CA- RO膜的丙酮溶剂量 ,开始时迅速下降 ,然后逐渐趋于零 ,多孔膜变成了致密均相膜。非对称性的超滤 ( UF)膜、纳滤 ( NF... 详细信息

本文研究了经丙酮水溶液改性处理后的醋酸纤维素 ( CA)反渗透 ( RO)膜的有机物渗透性。在丙酮改性处理过程 ,透过 CA- RO膜的丙酮溶剂量 ,开始时迅速下降 ,然后逐渐趋于零 ,多孔膜变成了致密均相膜。非对称性的超滤 ( UF)膜、纳滤 ( NF)膜、RO膜 ,分别经丙酮改性处理后 ,甲苯透过膜的渗透速率依次减少。孔径越小、脱盐率越低的 RO膜 ,经改性处理后 ,甲苯渗透速率越小。三醋酸纤维素 ( CTA)与醋酸丁酸纤维素 ( CAB)二组分共混的 CTACAB膜 ,或者与醋酸丙酸纤维素( CAP)三组分共混的 CTACABCAP膜 ,随着实验时间的延长 ,甲苯的渗透速率 ,前者逐渐下降到接近零时趋于稳定 ,后者没有变化。改性的 CA膜和 CTACAB共混膜分离甲基叔丁基醚 ( MTBE) /甲醇 ( Me OH)混合物时 ,渗透通量分别为 835和 2 2 6( g/m2· h) ,渗透物中 Me OH浓度都达到88wt%。

关键词：膜纤维素酯渗透速率有机混合物渗透汽化

Structure, Plastic Deformation of Polyethylene: A Molecular Dynamics Method

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advances in Materials Physics and Chemistry 2020年第6期10卷 125-150页

作者： Dung nguyen trong Tuan Tran Quoc Hue Dang Thi Minh Cuong nguyen Chinh Van Duong Quoc Faculty of Physics Hanoi National University of Education Ha Noi Vietnam Faculty of Basic Science University of Transport Technology Ha Noi Vietnam Faculty of Electrical and Electronics Engineering Thuyloi University Ha Noi Vietnam

This paper studies the influence factors of atoms number (N) at temperature (T) and after annealing time (t) on the structure shape and the plastic deformation of Polyethylene C2H4 (PE) by the Molecular Dynamics (MD) method with Dreading pair interaction, cyclic boundary conditions and plastic deformation of Polyethylene (PE) be done by stretching method according to the z-axis. The results of structure, plastic deformation of PE are analyzed through size (l), the total energy of the system (Etot), shape and associated energy (Ebond), angular binding energy (Eangle), energy Edihedral, interactive energy Vander Walls (Enon-bonding). When increasing N, t leads to the number of structural units of Face-Centred Cubic (FCC), Body-Centered Cubic (BCC) and Hexagonal Close-Packed (HCP) increasing, but Amorphous (Amor) decreases while the angle between the atoms is a constant corresponding to 109.5°. Besides, the length of the link (r) increases from r = 1.529 Å to r = 1.558 Å while the plastic deformation energy of PE gets an enormous change and the bonding angle at 109.27°. The length of the link r = 1.529 Å and the size (l) of the PE material increase from l = 3.7

关键词： Molecular Dynamics Atoms Number Annealing Time Polyethylene Plastic Deformation

Finite Element Modeling in Analyzing Physical Properties of the Pb-Free Piezoelectric Materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

材料科学与工程（中英文A版） 2013年第4期3卷 282-288页

作者： Vo Thanh Tung nguyen trong Tinh nguyen Hoang Yen Le Thi Ngoc Bao Dang Anh Tuan Hue University of Science Hue University Hue City 08454 Vietnam Institute of Applied Physics and Scientific Instrument of Vietnamese Academy of Science and Technology 08404 Vietnam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

可持续设计

现代装饰 2013年第8期 44-45页

作者： Vo trong nghia 谢作标

城市问题我们生活的地球如今居住着70多亿人口,并且这个数字每天都在更新,其中那些位于热带的亚洲国家正面临着人口增长与经济发展带来的一系列社会问题。由于这些亚洲国家并不能享受到适用于温带气候国家的城市和建筑领域的诸多创新,... 详细信息

城市问题我们生活的地球如今居住着70多亿人口,并且这个数字每天都在更新,其中那些位于热带的亚洲国家正面临着人口增长与经济发展带来的一系列社会问题。由于这些亚洲国家并不能享受到适用于温带气候国家的城市和建筑领域的诸多创新,所以自然产生了一些新的挑战。越南自然也不例外,这个国家正面临着人口增长和近年的气候变化导致的巨大困难。据预测,当地球海平面每上升1米,那么作为世界上最大的大米主产区之一的湄公河三角洲将有40%的区域被海水淹没。这里洪涝灾害频发,不仅仅在农村地区如此,甚至在像胡志明市这样的越南大城市也是如

关键词：建筑师越南人口美术家热带国家胡志明市地球行星竹建筑绿色建筑竹子摩托车

Estimation of Tropical Forest Structural Characteristics Using ALOS-2 SAR Data

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Advances in Remote Sensing 2016年第2期5卷 131-144页

作者： Luong Viet nguyen Ryutaro Tateishi Hoan Thanh nguyen Ram C. Sharma Tu trong To Son Mai Le Center for Environmental Remote Sensing Chiba University Chiba Japan Space Technology Institute Vietnam Academy of Science and Technology Hanoi Vietnam Institute of Geography Vietnam Academy of Science and Technology Hanoi Vietnam

The potential of ALOS-2 SAR data for the estimation of tropical forest structural characteristics was assessed in Vietnam by collecting forest inventory data. The effect of polarization and seasonality of the SAR data on the estimation of forest biomass was analyzed. The combination of HH, HV, and HH/HV polarizations using multiple linear regression did not improve the estimation of biomass compared to using the HV channel independently, as the HH and HH/HV variables were not statistically significant. The dry season HV backscattering intensity was highly sensitive to the biomass compared to the rainy season backscattering intensity. The SAR data acquired in the rainy season with humid and wet canopies was not very sensitive to the biomass. The strong dependence of the biomass estimates with the season of SAR data acquisition confirmed that the choice of right season SAR data is very important for improving the satellite based estimates of the biomass. The validation results showed that the dry season HV polarization could explain 54% variation of the biomass.

关键词： Forest Structure Forest Biomass SAR ALOS-2 Backscattering Intensity Sensitivity Analysis

Preparation and Characterization of Reduced Graphene-P3HT Composite Thin Films for Use as Transparent Conducting Electrodes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2018年第5期9卷 464-472页

作者： Lam Minh Long Dang Dinh Long nguyen Phuong Hoai Nam nguyen trong Tinh Sergei Antonovic Chizhik nguyen Nang Dinh University of Engineering and Technology VNU in Hanoi Hanoi Vietnam Institute of Applied Physics and Scientific Instrument Vietnamese Academy of Science and Technology Hanoi Vietnam A.V. Luikov Heat and Mass Transfer Institute National Academy of Sciences of Belarus Minsk Belarus

With the aim of producing simple and effective transparent conducting electrodes, the conducting polymer poly(3-hexylthiophene) (P3HT) incorporated with reduced graphene oxide film (rGO) (called rGO-P3HT) was prepared by spin-coating method. Structural, electrical and optical characterization showed that rGO-P3HT films 9.0 wt% P3HT exhibited good stability when exposed to the ambient atmosphere. These composite films of 200 nm thickness possess a sheet resistance and transparency of R□~ 17Ω and T ~ 72%, respectively. Owing to containing conducting polymer, rGO-P3HT-coated glass could be efficiently used in photovoltaic applications, in organic solar cells in particular, with the replacement of the indium tin oxide (ITO) and fluorine tin oxide (FTO) electrodes.

关键词： Composite rGO-P3HT Thin Films Transparent Conducting Electrode Sheet Resistance Transmittance

A New Genetic Algorithm Applied to Multi-Objectives Optimal of Upgrading Infrastructure in NGWN

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications and Network 2013年第3期5卷 223-231页

作者： Dac-Nhuong Le Nhu Gia nguyen Dac Binh Ha Vinh trong Le Duytan University Danang Vietnam Faculty of Information Technology Haiphong University Haiphong Vietnam

A problem of upgrading to the Next Generation Wireless Network (NGWN) is backward compatibility with pre-existing networks, the cost and operational benefit of gradually enhancing networks, by replacing, upgrading and installing new wireless network infrastructure elements that can accommodate both voice and data demand. In this paper, we propose a new genetic algorithm has double population to solve Multi-Objectives Optimal of Upgrading Infrastructure (MOOUI) problem in NGWN. We modeling network topology for MOOUI problem has two levels in which mobile users are sources and both base stations and base station controllers are concentrators. Our objective function is the sources to concentrators connectivity cost as well as the cost of the installation, connection, replacement, and capacity upgrade of infrastructure equipment. We generate two populations satisfy constraints and combine them to build solutions and evaluate the performance of my algorithm with data randomly generated. Numerical results show that our algorithm is a promising approach to solve this problem.

关键词： Multi-Objectives Optimal Next Generation Wireless Network Network Design Capacity Planning Genetic Algorithm Two-populations

Investigation of the hydro-mechanical behaviour of fouled ballast

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 Zhejiang University-Science A(Applied Physics & Engineering) 2013年第4期14卷 244-255页

作者： Yu-jun CUI trong Vinh DUONG Anh Minh TANG Jean-Claude DUPLA Nicolas CALON Alain ROBINET Laboratoire Navier/CERMES Ecole des Ponts ParisTechBlaise PascalCité DescartesChamps-sur-Marne 77455 Marne-la-Vallée Cedex-France French National Railway Company 93574La Plaine St DenisFrance

In this study,a fouled ballast taken from the site of Sénissiat,France,was *** the hydraulic behaviour,a large-scale cell was developed allowing drainage and evaporation tests to be carried out with monitoring of both suction and volumetric water content at various positions of the *** was observed that the hydraulic conductivity of fouled ballast is decreasing with suction increase,as for common unsaturated *** effect of fines content was found to be *** the mechanical behaviour,both monotonic and cyclic triaxial tests were carried out using a large-scale triaxial *** water contents were *** results were interpreted in terms of shear strength and permanent axial *** appeared that the water content is an important factor to be accounted for since any increase of water content or degree of saturation significantly decreases the shear strength and increases the permanent *** modelling has been attempted based on the experimental *** model in its current state is capable of describing the effects of stress level,cycle number and water content.

关键词： Fouled ballast Degree of saturation Hydraulic behaviour Mechanical behaviour Fines content Constitutive modelling