Study on Adsorption and Diffusion in Zeolite

ＳｔｕｄｙｏｎＡｄｓｏｒｐｔｉｏｎａｎｄＤｉｆｆｕｓｉｏｎｉｎＺｅｏｌｉｔｅＸｉａｏ－ｇｕａｎｇＲｅｎａｎｄＹｏｎｇ－ｊｉＳｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃａｌＥｎｇｉｎｅｅｒｉｎｇＬｉａｏｙａｎｇＰｅｔｒｏｃｈｅｎｉｃａｌＥｎｇｉｎｅｅ...     

Exploiting Ontology for Software License Agreements

Software end-users need to sign licenses to seal an agreement with the product providers. Habitually, users agree with the license (i.e. terms and conditions) without fully understanding the agreement. To address this issue, an ontological model is developed to formulate the user requirements and license agreements formally. This paper, introduces ontological model that includes the abstract license ontology of common features found in di?erent license agreements. The abstract license ontology is then extended to a few real world license agreements. The resulting model can be used for di?erent purposes such as querying the appropriate licenses for a speciˉc requirement or checking the license terms and conditions with user requirements.     

现代生活的绘画——从马奈及其追随者的艺术看巴黎

本文是美国著名艺术理论家、批评家T.J.克拉克同名著作修订版的导论部分,探讨了印象派绘画与巴黎的关系.     

Solid state interfacial reactions in electrodeposited Ni/Sn couples

Ni/Sn couples,prepared by sequentially electroplating Ni layers and Sn layers on metallized Si wafers,were employed to study the mierostructures and growth kinetics of Ni-Sn intermediate phases,when the Ni/Sn couples were aged at room temperature or annealed at temperatures from 150 to 225℃for various times.The results show that the NiSn phase and Ni_3Sn_4 phase are formed,respectively,in the aged couples and annealed couples.The Ni_3Sn_4 layer is continuously distributed between the Ni and Sn sides in t...     

Surface turbulence in a physical model of a steel thin slab continuous caster

In the thin slab continuous casting (TSCC) of steel, the issue of optimum fluid flow is very important due to higher casting speeds and has direct influence on the formation of solidified shells and the quality of final products. In the current work, a full-scale physical mod-eling of a thin slab caster on the basis of dimensionless Reynolds and Froude similarity criteria was constructed. The flow pattern in the fun-nel shaped mold with a new tetra-furcated submerged entry nozzle (SEN) was investigated. To ...     

Mechanical performance and texture characteristic of an IF steel containing Nb and Ti by double cold rolling

Single cold rolling and double cold rolling were applied to hot rolled strips with different reduction ratios. The evolutions of {100},{111} and Goss face texture during double rolling were investigated by comparing the orientation distribution function(ODF) of the double rolled sample with that of the single rolled one. The double cold rolling texture is characterized by a higher γ-texture and a lower α-texture,and the {111}<112> component is improved remarkably. Based on the TEM observation and mechanical...     

Solidification and crystallization properties of CaO-SiO2-Na2O based mold fluxes

Crystallization properties play an important role in keeping a smooth running of continuous casting process and high sur-face quality of cast strands. To reduce fluorine pollution in slag, a new type of CaO-SiO2-Na2O (CSN) based mold flux was studied. The solidification and crystallization properties, including crystallization temperature, crystallization ratio and solidification minera-graphy, were measured, which were compared with the CaO-SiO2-CaF2 (GF) mold flux. The results show that the crystallization performance is equal to the high fluoride mold powder and CSN can be used for peritectic steel grades sensitive to longitudinal cracking in continuous casting.     

Corrosion behavior and mechanism of the automotive hot-dip galvanized steel with alkaline mud adhesion

The corrosion behavior and mechanism of hot-dip galvanized steel and interstitial-free (IF) substrate with alkaline mud adhesion were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and linear polarization. The results show that non-uniform corrosion occurs on the galvanized steel and IF substrate during 250 h with the mud adhesion. The corrosion products on the galvanized steel are very loose and porous, which are mainly ZnO, Zn5(OH...     

Characteristics of shell thickness in a slab continuous casting mold

The key to reduce shell breakout in the continuous casting process is to control shell thickness in the mold.A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume of fluid (VOF) model and the enthalpy-porosity scheme was conducted and the emphasis was put upon the flow effect on the shell thickness profiles in longitudinal and transverse directions.The results show that the jet acts a stronger impingement on the shell of narrow face,which causes a zero-increase of shell thickness in a certain range near the impingement point.The thinnest shell on the slab cross-section locates primarily in the center of the narrow face,and secondly near the comer of the wide face.Nozzle optimization can obviously increase the shell thickness and make it more uniform.     

苯甲酰基苯基脲杀虫剂

取代苯基脲化合物的生物活性已经知道相当长一个时期了,很多众所周知的除草剂就属于这一类。而取代苯甲酰脲类化合物的杀虫活性只是在1970年前后才被Philips-Duphar公司所发现。在除草剂敌草腈结构活性研究过程中,把敌草腈与敌草隆相结合,得到1-(2,6-二氯苯甲酰基)-3-(3,4-二氯苯基)脲,代号为Du 19,111。此化合物没有显