电弧炉炼钢脱磷的研究与实践

结合安龙钢铁公司的实际生产,对炼钢过程磷的含量进行分析,模拟炼钢的实际生产条件,通过试验找出了磷成分超标的原因。从炼钢炉内和钢包内脱磷热力学条件入手,对该公司的炼钢现状进行了工艺改进,达到了预期的目的。     

A Model of Green Acceptance and Intentions to Use Bike-Sharing: YouBike Users in Taiwan

With the emphasis on sustainability in transportation, bike-sharing systems are gaining popularity. This paper investigates the attitudes of users of a bike-sharing system with the aim of identifying their priorities, thus allowing local governments to focus their efforts most effectively on enhancing users’ intentions to use such systems. The relationships among green perceived usefulness (the extent to which individuals believe that a bike-sharing system will improve the environmental performance of some part of their life within a specific context), user attitude and perceived ease of use with green intentions, and the mediation effect of user attitude towards bike-sharing are explored. The focus of the study is on how to enhance green intentions via perceived usefulness, perceived ease of use and user attitude of the green technology acceptance model (green TAM) (Davis 1989). The two-step approach of structural equation modeling was applied to analyze the empirical results, which indicated that green perceived usefulness and user attitude have positive influences on the green intentions of 262 users and 262 non-users from ten sampled bike-sharing sites around the central administrative districts of Taipei. However, user attitude has the highest mediation effect on green intentions, and perceived ease of use does not have a significant effect on intentions for either users or non-users. Therefore, governmental institutions can strive to improve the attitudes of bike-sharing users and non-users, their green perceived usefulness, and perceived ease of use to strengthen their intentions to use this mode of sustainable transportation.     

Synthesis of bio-functionalized copolymer particles bearing carboxyl groups via a microfluidic device

Monodisperse copolymer particles carrying surface carboxyl groups in the range of 50–200 μm were prepared by in situ UV polymerization of ethyleneglycol dimethacrylate (EGDMA) with acrylic acid (AA) via a microfluidic flow-focusing device (MFFD). The design of the coaxial orifices in the MFFD enables the confinement of the comonomer liquid thread to the central axis of the microchannel, which can avoid the wetting problem of comonomer liquid with the microchannel and can successfully produce monodisperse copolymer microspheres with coefficient of variance below 5%. The effects of concentration of EGDMA and AA on droplet diameters and the distribution of carboxyl group on particle surfaces were examined. It has been found that, increasing the concentration of AA would decrease particle sizes, but increase the distribution of carboxyl group on particle surfaces. Bioconjugation of the carboxylated copolymer particles with the anti-rabbit IgG–Cy3 conjugates was successfully demonstrated. By increasing the concentration of AA accompanied with decreasing the particle sizes, high efficiency of bioconjugation on carboxylated copolymer particles was achieved. The rapid continuous synthesis of carboxylated copolymer particles via a microfluidic device provides a reliable control of particle sizes and composition for massive production in biotechnological applications.     

Holographic Models Without Translational Invariance

In this proceeding paper, we briefly discuss some holographic models without translational invariance. We construct holographic models which possess the linear temperature resistivity and various anomalous transports consistent with the cuprate strange metal. We also compute the fermion spectral function in the context of holographic massive gravity which is argued to correspond to the system without translational invariance. Our fermion spectral function calculations provide supporting evidences on the interpretation of holographic massive gravity as a disordered system.     

电弧炉炼钢脱磷的研究与实践

结合安龙钢铁公司的实际生产，对炼钢过程磷的含量进行分析，模拟炼钢的实际生产条件。通过试验找出了磷成分超标的原因。从炼钢炉内和钢包内脱磷热力学条件入手，对该公司的炼钢现状进行了工艺改进,达到了预期的目的。     

面向服务架构下的移动地理信息数据采集

传统的地理信息数据采集方式和采集平台架构制约着地理空间信息服务的发展,移动地理信息数据采集成为可行的解决手段。通过面向服务技术在移动GIS数据采集中的应用,创建易于部署和管理的客户端和服务器整体架构,采用Web Service技术创建多种地理信息服务,依托移动GIS平台实现了一系列的地图数据浏览和查询等功能。所建立的系统运行状态良好,可扩展性强,界面友好易操作,适用于各种类似的专业,为地理信息空间服务的发展提供有力的数据支撑。     

Surface tension driven flow for open microchannels with different turning angles

Present study examines the flow characteristics of open microchannels with sharp turns by experimental and numerical methods. For the open channel system in microscale, the flow is mainly driven by surface tension at atmospheric pressure. The open channels are of various aspect ratios of depth-to-width, ranging from 0.75 to 3, and of turning angles from 45° to 135°. It is found that the turning angle and the aspect ratio of depth-to-width play major roles in the velocity of liquid front advancing, the meniscus of liquid–gas interface shape, and head loss of flow due to turning. Besides, the radius of curvature of the liquid front is reduced as the liquid front travels downstream and over the turning elbow. The loss coefficient remains the same for turning angles less than 75°, whereas it is increased further and is even more pronounced for turning angles larger than 105°. Numerical predications based on conservation laws agree with the experimental observations, and the flow characteristics are well described for open channel in microscale, as the aspect ratio is greater than or near to 1.5.     

Synthesis and characterization of poly(p-chloromethylstyrene) nanocomposite comprising covalently bonded carbon nanocapsules: Superiority of thermal properties to a physical blend

The present study demonstrates the synthesis of poly(p-chloromethylstyrene) (PCMS) nanocomposite containing well-dispersed carbon nanocapsules (CNC) covalently bonded to the polymer molecules and for the first time enables a comparison between this material (PCMS–CNC) and a physical blend of PCMS and CNC (PCMS/CNC). Firstly, the pristine CNC underwent a ligand-exchange reaction with ferrocene, having an exchange frequency of one Cp-Fe- for every 40–50 hexagon on the CNC surface. These Cp-Fe-CNCs were next monolithiated by sec-butyllithium and went through a nucleophilic substitution reaction with PCMS, thus forming successfully a PCMC–CNC nanocomposite with all CNCs covalently bonded to PCMS. Direct evidence for the covalent bonding of PCMS to CNC has been obtained by FTIR, Raman and NMR spectra. Morphology of PCMS–CNC nanocomposite and individual PCMS–CNC particle have been examined by AFM and TEM imagings. Having an average particle size of 45 nm, each CNC has been bonded with multiple coil-shaped PCMS and each PCMS could have been bonded only to one CNC. Covalent bonding of PCMS with CNC does not affect the photoluminescence and PCMS–CNC would provide the same optical properties as PCMS/CNC. At an identical weight composition, DSC thermograms clearly indicate that while T_g of PCMS/CNC blend is only slightly higher than pristine PCMS, T_g of PCMS–CNC is significantly higher due to the slower chain mobility caused by the tethering of PCMS to CNC.     

LF冷态渣用于脱硫的研究

研究了安龙钢铁公司LF冷态钢渣的渣系组成和硫容量,对影响钢水脱硫的热力学因素和动力学因素进行了分析讨论,并结合炼钢实际和冶炼品种特点,在精炼渣氧化性、曼内斯曼指数、氟化钙含量等方面提出了LF精炼脱硫的技术措施.介绍了如何循环利用LF冷态钢渣脱硫的工艺技术,为钢铁行业提供了一项较为实用的节能降耗途径.     

电炉降低冶炼电耗的实践

结合安龙钢铁公司的生产实际,通过对安龙电弧炉炼钢过程的能量平衡进行分析,找出了冶炼电耗高的原因和影响因素.就安龙的现状进行了设备技术改造和炼钢工艺改进.达到了预期的目的