检索结果-南通市图书馆

Multiphase modeling of fluid dynamic in ladle steel operations under non-isothermal conditions

Journal of Iron and Steel Research International 2017年第9期24卷 888-900页

作者： H.Gonzalez J.A.Ramos-Banderas E.Torres-Alonso G.Solorio-Diaz C.A.Hernández-Bocanegra Graduate Program in Metallurgy Morelia Technological Institute(ITM)Morelia Michoacdn 58120Mexico Graduate Program in Engineering Mechanical UMSNHMorelia Michoacdn 58140Mexico CATEDRAS CONACyT Benito JuarezCDMX 03940Mexico

A numerical simulation was performed to study the flow pattern,mixing time and open-eye slag produced by argon gas injection in an industrial scale steel ladle under non-isothermal *** liquid steel remains 5min before the injection,and thermal stratification and convective flows were *** different sequences in stages employing various argon-gas flow rates were *** the first case,a sequence with the highest flow rates of argon was applied,while in the second and the third sequences,the intermediate and the lowest flow rates of argon gas were used,*** determining the chemistry homogenization,the mixing time was computed and analyzed in all three *** was found that the cold steel is located near the walls while the steel with a high temperature is accumulated in the center of the ladle above the argon-gas *** higher and lower flows promote a faster chemistry homogenization owing to the secondary recirculations that are developed closer to the *** results from steel temperature drop show a good concordance with plant trial measurements.

关键词： Thermal stratification Mixing time Open-eye slag Ladle steelmaking Multiphase modeling

来源：

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

Synthesis and characterization of carbon-TiO2-CeO2 composites and their applications in phenol degradation

引用

Journal of Rare Earths 2017年第6期35卷 551-558页

作者： Y.Lara-López G.García-Rosales J.Jiménez-Becerril Technological Institute of Toluca Posgrade and Research Division Ex-Rancho La Virgen S/N C.P. 50120 Metepec Mexico National Institute for NuclearResearch Chemistry Department. Carretera Mexico-Toluca S/N la Marquesa Ocoyoacac C.P. 52750 Mexico

The objective of this work was to synthesize particles of titanium oxide and cerium oxide supported on carbon, which was obtained through the pyrolysis of orange peel. The materials were characterized using scanning electron microscopy, X-ray diffraction, infrared spectroscopy, and the specific surface area from Brunauer-Emmett-Teller method. The photocatalytic properties of the synthesized materials were determined by the degradation of phenol in 30 mg/L aqueous solutions. TiO2-CeO2 particles were obtained with an average spherical size of 57 nm and were supported on the carbon surface; this material presented a specific surface area of 296 m2/g and degrades -40% of phenol after 240 min of UV irradiation.

关键词： phenol photocatalytic spherical pyrolysis irradiation Teller Brunauer ceria orange cerium

来源：

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

Efcient autofocus method for sequential automatic capturing of high-magnification microscopic images

引用

Chinese Optics Letters 2013年第12期11卷 29-32页

作者： Santiago Tello-Mijares Francisco Flores Jesús Bescós Edgar Valdez Instituto Tecnológico de la Laguna Blvd. Revolución y Czda. Cuauhtemoc S/N CP 27000TorreónMéxico VPU Lab Escuela Politécnica SuperiorUniversidad Autónoma de MadridCiudad Universitaria de Cantoblanco28049 MadridSpain EIIP Lab Instituto Tecnológico Superior de LerdoAv. Tecnológico N 1555 Placido Domingo35150LerdoMéxico

This letter presents an autofocus （AF） method to position a high-magnification microscope lens that automatically captures hundreds of images from a single moving slide. These images are taken by a mobile clinic unit in a rural location, and are later automatically processed and revised by a remote specialist. This process requires high focus precision to enable image processing techniques to achieve proper results. Low focusing times are also required for the system to be operative. We propose a novel method that combines two focus measures with an adapted searching scheme to cope with both constraints.

关键词： DCT Efcient autofocus method for sequential automatic capturing of high-magnification microscopic images high

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：