Search results

1 – 10 of over 64000
Article
Publication date: 12 June 2017

Xiang Nie, Shanshan Zhao and Yanheng Li

This paper aims to take the four resin as adsorbent and coal ash alkaline solution as the material and use the single factor experimental method to study absorption influence…

Abstract

Purpose

This paper aims to take the four resin as adsorbent and coal ash alkaline solution as the material and use the single factor experimental method to study absorption influence factors for each resin to absorb lithium. At the same time, the authors got the special properties of some kinds of resin and compared the test results of each resin at the optimum factors.

Design/methodology/approach

Because many factors affect the test, this study uses the method of comparison and control variables. This method study on the influencing factors of ion exchange resin adsorption Li+.

Findings

In these adsorption experiments, the basic resin adsorption effect is more obvious. The optimum adsorption conditions are as follows: resin quality is 0.1 g, the volume of fly ash solution is 100 ml, magnetic stirrer speed is 140 r/min and the adsorption time is 60 min. Under these conditions, the adsorption rate of Li+ could reach 25.17 per cent aluminum.

Originality/value

Li extracted from coal ash can not only relieve the lithium resources in short supply but can also provide a new mode to the field of coal resources in recycling economy and transition economy. At the same time, the extraction of Li resources will provide an important reserve of raw materials for the future of nuclear power plant.

Details

World Journal of Engineering, vol. 14 no. 3
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 12 January 2024

Hsin-Yi Liu and Jhao-Ying Wu

The theoretical findings serve as a foundation for further research into understanding sulfide-based solid-state electrolytes, ultimately advancing the progress of all-solid-state…

Abstract

Purpose

The theoretical findings serve as a foundation for further research into understanding sulfide-based solid-state electrolytes, ultimately advancing the progress of all-solid-state batteries.

Design/methodology/approach

The electronic properties of Li7P3S11 are thoroughly explored through first-principles calculations.

Findings

This investigation encompasses the intricate atom-dominated valence and conduction bands, spatial charge density distribution and the breakdown of atom and orbital contributions to van Hove singularities. Additionally, the compound’s wide and discrete energy spectra reflect the substantial variations in bond lengths and its highly anisotropic geometric structure. The complex and nonuniform chemical environment indicates the presence of intricate hopping integrals.

Originality/value

This study provides valuable insights into the critical multiorbital hybridizations occurring in the Li-S and P-S chemical bonds. To validate the theoretical predictions, experimental techniques can be employed. By combining theoretical predictions with experimental data, a comprehensive understanding of the geometric and electronic characteristics of Li7P3S11 can be achieved.

Details

Multidiscipline Modeling in Materials and Structures, vol. 20 no. 1
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 15 June 2023

Wan Han and Xiaojun Hu

When smelting Al-Li alloy, the material inevitably comes into contact with various oxide-refractories. These refractories are subjected to varying degrees of melt-corrosion at…

Abstract

Purpose

When smelting Al-Li alloy, the material inevitably comes into contact with various oxide-refractories. These refractories are subjected to varying degrees of melt-corrosion at high temperatures. The purpose of this study is to find stable oxide refractories at casting temperature.

Design/methodology/approach

Four materials were selected for evaluation, and their corrosion by the Al-Li alloy at casting temperature and different holding times was measured. Subsequently, scanning electron microscopy and energy-dispersive spectroscopy were used to study the interfaces. Stable refractory materials were selected by comparing the thicknesses of the reaction layers.

Findings

The thickness of the Al-Li/ZrO2 reaction layer varies linearly with the square root of the holding duration. Therefore, the growth of the reaction layer is controlled by diffusion. The reaction layer of Al-Li/Al2O3 is thinner, and its growth is also controlled by diffusion. However, there were no obvious reaction layers between the Al-Li alloy and MgO or Y2O3. By comparing these reaction-layer thicknesses, the order of stability was found to be ZrO2 < Al2O3 < MgO and Y2O3.

Originality/value

These results provide a scientific basis for the optimal selection of refractory materials for Al-Li alloy smelting.

Details

Anti-Corrosion Methods and Materials, vol. 70 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 1 December 1998

Thomas M. Apke

Explores the issue of global licensing of technological advancement. Deals particularly with the legal side of things, minimizing risk in particular. Indicates that the fastest…

2376

Abstract

Explores the issue of global licensing of technological advancement. Deals particularly with the legal side of things, minimizing risk in particular. Indicates that the fastest and best way of penetrating foreign markets is to use a local branch already established in the foreign market, or, alternatively, establish a subsidiary or joint venture. Focuses then on licensing and some of the problems that can arise from that – piracy, exploitation, competition and financial implications if things go wrong. Suggests ways to circumvent this through licensing agreements, patents, trademarks, copyright, technology transfer agreements, and/or national intellectual property laws. Defines a licensing agreement, covering the subject matter of the license, technical assistance provisions, specification of the scope of the license, royalty compensation, quality standards and warranties, infringement of licensed rights, and duration and termination of the agreement. Mentions, also, antitrust considerations and the tax aspects of licensing. Recommends this approach as it spells out terms and conditions clearly to all parties, thereby, hopefully, reducing misunderstanding and disputes.

Details

Managerial Law, vol. 40 no. 6
Type: Research Article
ISSN: 0309-0558

Keywords

Article
Publication date: 1 February 2000

Yaw A. Debrah and Ian G. Smith

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on…

11528

Abstract

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.

Details

Management Research News, vol. 23 no. 2/3/4
Type: Research Article
ISSN: 0140-9174

Keywords

Article
Publication date: 1 June 2005

James F. Morgan

A religious revival is occurring in the United States today as the traditional wall preventing faith from entering the work place is crumbling. With workers increasingly…

1531

Abstract

A religious revival is occurring in the United States today as the traditional wall preventing faith from entering the work place is crumbling. With workers increasingly practicing their religion at work, employers face a growing cavalcade of dilemmas, including those where employees discuss religious tenets, wear religious symbols, object to employer edits on the basis of faith, and proselytize. The faith/work challenge is made even more complex because of the greater number of religions practiced today (both traditional religions based on Judeo‐Christian principles and the so‐called “immigrant religions” that have blossomed during recent decades) coupled with the growing popularity of a host of “spirituality” movements. As the mixing of faith and work becomes common place, employers and employees naturally look to the law to establish concomitant rights and duties.

Details

Managerial Law, vol. 47 no. 3/4
Type: Research Article
ISSN: 0309-0558

Keywords

Article
Publication date: 1 June 1999

George K. Chacko

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today. Considers the…

9939

Abstract

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today. Considers the marketing strategies employed, together with the organizational structures used and looks at the universal concepts that can be applied to any product. Uses anecdotal evidence to formulate a number of theories which can be used to compare your company with the best in the world. Presents initial survival strategies and then looks at ways companies can broaden their boundaries through manipulation and choice. Covers a huge variety of case studies and examples together with a substantial question and answer section.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 11 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 1 December 2000

G.G. Chowdhury and Sudatta Chowdhury

A number of digital libraries have been set up in the course of various research and development activities in different parts of the world during the last few years. How do these…

1507

Abstract

A number of digital libraries have been set up in the course of various research and development activities in different parts of the world during the last few years. How do these digital libraries fair in terms of information retrieval features? This paper looks into this question by reviewing the information retrieval features of 20 digital libraries chosen from around the globe. The first part of the paper briefly describes the features of the chosen digital libraries in terms of their nature and content. The second part looks into the information retrieval features of each digital library. Unique features of some digital libraries have been indicated. Major areas of research that would improve the information retrieval features of the future digital libraries have been indicated.

Details

Program, vol. 34 no. 4
Type: Research Article
ISSN: 0033-0337

Keywords

Article
Publication date: 25 August 2017

Candice T. Hux

This synthesis covers academic research on the use of valuation, tax, information technology (IT), and forensic specialists on audit engagements. The importance and role of…

Abstract

This synthesis covers academic research on the use of valuation, tax, information technology (IT), and forensic specialists on audit engagements. The importance and role of specialists on audit engagements have recently increased, and specialist use has garnered significant attention from regulators and academics. Given the PCAOB’s (2017b) recent proposal to revise auditing standards regarding specialists’ involvement, it is important to review the specialist literature as a whole. By integrating research across these four domains, I identify commonalities and differences related to: (1) factors associated with the use of specialists on audit engagements (including the nature, timing, and extent of use); (2) factors impacting auditors’ interactions with specialists (including specialists contracted by the auditor or management); and (3) outcomes associated with the use of specialists. This integrated analysis of the specialist literatures shows variation in the use of specialists, and various factors affecting both if and how they are involved and whether auditors use specialists internal or external to the audit firm. Additionally, research has sometimes (but not always) linked specialist involvement to higher audit quality. The commonalities and areas of variation identified are informative to audit research and practice, particularly as regulators and audit firms look to improve the quality of audits using specialists. Throughout the synthesis, I also provide a number of directions for future research.

Details

Journal of Accounting Literature, vol. 39 no. 1
Type: Research Article
ISSN: 0737-4607

Keywords

Article
Publication date: 22 April 2022

Xiangming Chen, Qunhui Ou, Chao An and Dongyun Zhang

The purpose of this study is to provide an alternative approach to teacher learning on top of the usual practices of listening to experts' lectures and conducting school-based…

Abstract

Purpose

The purpose of this study is to provide an alternative approach to teacher learning on top of the usual practices of listening to experts' lectures and conducting school-based activities among peers in China. A boundary-crossing lesson study (BCLS) through school-university partnership served as an example to illustrate how a class teacher's mindset changed towards her students in equal interactions with university scholars.

Design/methodology/approach

With the lenses of action science theory and boundary-crossing learning theory, the study used qualitative research approach to collect and analyze data. One Chinese primary school class teacher from a workshop on narrative action research was selected as the case for this study. Interviewing, observation and document analysis were used to collect data. Data analysis methods included categorization and contextualization of the teacher's mindset change towards her student.

Findings

The case teacher, Mrs. Li, collaborated closely in paired teaching with her university partner AP Yu in all the four phases of their BCLS. Each phase was marked with an interactive event such as dialogic illumination, reflexive theorization, embodied conversation, and fusion of teacher and trainer roles. With inspirational trust as a major interactive mechanism, Mrs. Li jumped out of her single-loop learning (changing strategies according to results) to double-loop learning (changing both strategies and values/values). As a result, her mindset changed from attribution to appreciation towards her low-achieving student.

Originality/value

This study made contributions in two ways. First, it examined a class teacher's mindset change towards her student, rather than that of subject matter teachers towards their teaching materials and methods. Second, it revealed how reflective interactions in a special kind of BCLS by school teachers and university scholars may promote the teacher's mindset change. The findings further confirm that having differences as boundaries is not enough for teacher learning. For deep learning like Mrs. Li's mindset change, it requires a respectful and inspirational relationship between school teachers and university scholars in the BCLS.

Details

International Journal for Lesson & Learning Studies, vol. 11 no. 2
Type: Research Article
ISSN: 2046-8253

Keywords

1 – 10 of over 64000