新磷矿选矿药剂的开发利用

随着易选磷矿资源的日益枯竭,必需大规模开发利用剩余的难选磷矿资源,以满足磷酸生产的需求．不同产地的磷矿性质的差异很大,对选矿工艺的要求也不相同．与磷矿共生的脉石矿物主要有石英、硅酸盐、碳酸盐、铁铝氧化物、黏土矿物、有机质等．在磷矿选矿工艺中,主要还是通过浮选工艺脱除磷矿中的杂质矿物,以获得可以利用的磷酸盐精矿．目前,还没有“通用”的药剂、药剂条件或浮选流程,可以用来浮选不同产地的磷矿．作为选矿药剂公司,阿麦仔致力于根据磷矿石的特性开发新的浮选药剂,用于选别不同地区的磷矿资源,包括中国．本文将介绍使用阿麦仔CustoFloat (CF)类阴离子捕收剂和 CustAmine (CA)类阳离子捕收剂浮选不同地区磷矿的一些实例．     

INTRINSIC MAGNETISM AND MAGNETIC ANISOTROPY OF AMORPHOUS Fe_(1-x)(Si,B)_x ALLOYS

The magnetic moment and the magnetostriction decrease slightly with the increase of totalSi+B content.A maximum of the Curie temperature appears at about 25 at.-% of Si+B.Themagnetic anisotropy is uninfluential by the content of Si+B,but much influnce by thedemagnetization effect of streak.A qualitative explanation of the experimental phenomenonseems to be noted by the aid of the electron transition and structure model of amorphous al-loys.     

Information systems curricula: Business versus academic viewpoints

This paper compares the results of a survey of managers of information systems activities in Fortune 500 organizations and a survey of information systems faculty of accredited business schools with respect to their opinions on the desired composition of undergraduate programs in information systems offered by schools of business. Information is presented on the respondent's opinions about the relative importance of: 1) educational output objectives that graduates of such programs might be expected to possess, and 2) courses and topics within courses designed to achieve these objectives. Similarities and differences between business and academic responses are analyzed.     

Community Public Space Planning Guided by Sustainable Development:A Case Study on Wei'an Nanli Residential Area of Tianjin City

The public space of community is not only significant to ensure the quality of residents’ daily life but also the important means to realize urban sustainability.It is necessary to bridge the gap between the physical and social development of city in order to build a harmonious and livable city.The sustainable development indicators are very useful tools.The design of the indicators involves the site investigation,and selection and modification of indicators.It can provide guidance to related plans by making scientific decision on the core target of the public space development of community.