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Article
Publication date: 1 September 2006

Shobha Manikandan, Jagannath, V.K. Shrikhande and G.P. Kothiyal

To study the degradation behaviour of borosilicate glass, which is suitable for hermetic sealing with Molybdenum and Kovar (Fe/Co/Ni) alloys, as a function of concentration and…

Abstract

Purpose

To study the degradation behaviour of borosilicate glass, which is suitable for hermetic sealing with Molybdenum and Kovar (Fe/Co/Ni) alloys, as a function of concentration and temperature in both acidic and alkaline media for long durations, up to 160 h.

Design/methodology/approach

The degradation (weight loss in mg/cm2 of the glass sample) was determined by immersing the glass sample in HCl and NaOH solutions at different temperatures for different periods extending up to 300 h. The damage to the glass surface was seen under an optical microscope and the chemical species on the corroded surface were identified by electron spectroscopy for chemical analysis.

Findings

The borosilicate glass, having the nominal composition 0.70 SiO2, 0.039 Na2O, 0.028 K2O, 0.21 B2O3, 0.01 Al2O3 was synthesized by melt and quench techniques. Degradation (corrosion) behaviour of this glass was investigated by immersing glass samples in 5 and 10 per cent HCl and 5 per cent NaOH solutions at different temperatures up to 90°C, for different periods and measuring dissolution rate (weight loss in mg/cm2 of the sample). Dissolution rates were found to be 5.47 mg/cm2 and 46.77 mg/cm2 in 5 per cent NaOH at 60 and 90°C, respectively, whereas they were comparatively low (2.59 and 5.80 mg/cm2 at 60 and 90°C, respectively, in 5 per cent HCl medium) after 160 h of total immersion period. The plot of dissolution rates against the temperatures showed the nonlinear behaviour at higher temperatures, probably due to the change in mechanism of corrosion. XPS studies exhibited the chemical species on the corroded surfaces. The optical microscopy of the corroded surface revealed that the corrosion mechanisms were different in acid and alkali media.

Research limitations/implications

The degradation behaviour of borosilicate glass having a specific composition has been investigated as a function of concentration and temperature in both acid and alkaline media. The mixed alkali effect on the degradation behaviour may be studied by varying relative amount of Na2O and K2O in the glass composition.

Practical implications

The glass composition under the present study has been used for fabrication of matched type glass‐to‐metal (GM) seals with kovar alloy. In this respect the present study is significant in deciding the environmental conditions for its use.

Originality/value

The degradation behaviour of borosilicate glass having alkali and alkaline earth metal oxides has been investigated as a function of concentration and temperature in both acid and alkali media. The findings in this paper have the potential implications in deciding the environmental conditions for use of GM seals fabricated using this glass.

Details

Anti-Corrosion Methods and Materials, vol. 53 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 1 October 2000

G.P. Kothiyal, S.V. Phadnis, V.K. Shrikhande, T. Mirza, M.K. Totlani and V.C. Sahni

Investigates the chemical resistance properties of lead silicate glasses suitable for compression‐type glass‐to‐metal (GM) seals, to aggressive solvents, containing different…

Abstract

Investigates the chemical resistance properties of lead silicate glasses suitable for compression‐type glass‐to‐metal (GM) seals, to aggressive solvents, containing different amounts of Na, K, and Ba as modifier ions, in acidic and alkaline media. In general attack rate was observed to be higher in alkaline medium, with maximum dissolution of 53.35 mg/cm2 compared to the maximum of 10.6mg/cm2 in acidic medium after 50 hour exposure. An increase in the concentration of BaO was found to decrease the degradation rate, while samples with higher molar amounts of either Na2O or K2O showed more though similar damage rates. The degradation rate was observed to be linear for higher BaO concentration in alkali solution, whereas in other cases accelerated rates were observed with longer exposure time. GM seals prepared with glass, having higher BaO content, were less susceptible to damage and had higher insulation resistances.

Details

Anti-Corrosion Methods and Materials, vol. 47 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 1 April 1992

JAROSLAV MACKERLE

This bibliography is offered as a practical guide to published papers, conference proceedings papers and theses/dissertations on the finite element (FE) and boundary element (BE…

Abstract

This bibliography is offered as a practical guide to published papers, conference proceedings papers and theses/dissertations on the finite element (FE) and boundary element (BE) applications in different fields of biomechanics between 1976 and 1991. The aim of this paper is to help the users of FE and BE techniques to get better value from a large collection of papers on the subjects. Categories in biomechanics included in this survey are: orthopaedic mechanics, dental mechanics, cardiovascular mechanics, soft tissue mechanics, biological flow, impact injury, and other fields of applications. More than 900 references are listed.

Details

Engineering Computations, vol. 9 no. 4
Type: Research Article
ISSN: 0264-4401

Keywords

Book part
Publication date: 30 March 2020

Rebecca Page-Tickell, Jude Ritchie and Therese Page-Tickell

This chapter aims to identify the impact of misbelief and heuristics on the engagement of giggers and customers with gigging organisations. This is of value due to the plethora of…

Abstract

This chapter aims to identify the impact of misbelief and heuristics on the engagement of giggers and customers with gigging organisations. This is of value due to the plethora of gigging opportunities and our lack of knowledge about how and why people choose to take up these opportunities. In addition, the gigs may frequently go unrecorded with payments made through systems such as PayPal which can allow international payments to be made without remittances. This chapter utilises some of the primary evolutionary theories to explore the efficacy and conflict in communications between gigging organisations, their customers and providers (giggers). Those selected are: misbelief in the conscious mind; and heuristics, such as the availability and confirmatory heuristics in the unconscious mind. Misbelief is addressed as a spandrel, and heuristics are discussed through the lens of fast and frugal approaches. Through a text analysis of 77 international gigging organisations, the messages conveyed are assessed against both evolutionary theory and prior research into the gig economy. The findings are that evolutionary psychology provides a useful framework for analysing these messages, as well as aiding understanding of gigging behaviours. HRM practitioners could make use of this form of analysis to support their design of interactions with giggers to ensure clarity on both sides.

Details

Conflict and Shifting Boundaries in the Gig Economy: An Interdisciplinary Analysis
Type: Book
ISBN: 978-1-83867-604-9

Keywords

Book part
Publication date: 11 April 2019

Bill Harley and Joep Cornelissen

In this chapter, the authors critique dominant technocratic conceptions of rigor in management research and elaborate an alternative account of rigor that is rooted in methodology…

Abstract

In this chapter, the authors critique dominant technocratic conceptions of rigor in management research and elaborate an alternative account of rigor that is rooted in methodology and involves a concern with the quality of scientific reasoning rather than a narrower focus on methods or measurement issues per se. Based on the proposed redefinition, the authors conceptualize how rigor, as an essential quality of reasoning, may be defined and the authors in turn qualify alternative methodological criteria for how they might assess the rigor of any particular piece of research. In short, with this chapter the authors’ overall aim is to shift the basis of rigor to an altogether more legitimate and commensurable notion that squarely puts the focus on reasoning and scientific inference for quantitative and qualitative research alike. The authors highlight some of the benefits that such an alternative and unified view of rigor may potentially provide toward fostering the quality and progress of management research.

Details

The Production of Managerial Knowledge and Organizational Theory: New Approaches to Writing, Producing and Consuming Theory
Type: Book
ISBN: 978-1-78769-183-4

Keywords

Article
Publication date: 12 July 2023

Ritesh Kumar and Ajnesh Prasad

This study revisits the discourse on the neoliberalization of business schools and explores how accreditation-linked institutional pressures catalyze cultural change that…

Abstract

Purpose

This study revisits the discourse on the neoliberalization of business schools and explores how accreditation-linked institutional pressures catalyze cultural change that adversely impact academic labor and academic subjectivities in the Global South.

Design/methodology/approach

This study is based on in-depth semi-structured interviews with academics from elite business schools in India.

Findings

This study shows how academics encounter institutional pressures in Indian business schools. Three major themes emerged from the data: (1) the conception of the ideal academic that existed before accreditation, (2) how the conception of the ideal academic was fundamentally transformed during and after accreditation, and (3) the challenges academics experienced in achieving the performance targets introduced by accreditation-linked institutional pressures.

Originality/value

This study offers two contributions to the extant literature on business schools located in the Global South: (1) it illustrates how organizational changes within business schools in India are structured by accreditation-linked institutional pressures coming from the Global North, and (2) it adds to the growing body of work on neoliberal governmentality by highlighting the implications of accreditation-liked institutional pressures on academic subjectivities.

Details

Equality, Diversity and Inclusion: An International Journal, vol. 42 no. 7
Type: Research Article
ISSN: 2040-7149

Keywords

Book part
Publication date: 19 October 2020

Rhea Lewthwaite and Antje Deckert

Many academics have, as of late, shown commitment to decolonising academic research and/or have (re-)educated themselves, at least to some extent, on Indigenous epistemologies…

Abstract

Many academics have, as of late, shown commitment to decolonising academic research and/or have (re-)educated themselves, at least to some extent, on Indigenous epistemologies, methodologies and methods. While these efforts seem commendable, they may lead to tenacious expectations by some senior academics that new and emerging Indigenous scholars must use Indigenous research tools when conducting decolonising research with their communities. However, such expectations can create ethical issues in instances where the use of Indigenous research tools may be inappropriate or even harmful due to the ongoing impact of deep colonisation in the community. Such counterproductive expectations also disempower emerging Indigenous researchers as they undermine the researcher’s knowledge of what is and is not appropriate in their communities. In this autoethnographic account, an Indigenous knowledgemaker and her non-Indigenous academic mentor jointly reflect on the tightrope walk between meeting academic expectations and contributing to the decolonisation of Indigenous communities in meaningful, non-harmful ways. Drawing on Edward Said (1979, 2004), we contemplate whether the increasing dissemination of Indigenous scholarship has generated a type of ‘academic neo-orientalism’ that is characterised by academic outsiders exoticising emerging Indigenous scholars in various research matters and thus re-colonise (perhaps contrary to their sincere intentions) Indigenous scholarship.

Details

Indigenous Research Ethics: Claiming Research Sovereignty Beyond Deficit and the Colonial Legacy
Type: Book
ISBN: 978-1-78769-390-6

Keywords

Open Access
Article
Publication date: 23 March 2021

Ida Okkonen, Tuomo Takala and Emma Bell

The purpose of this paper is to provide insight into the reciprocal relations between the caregiving imparted by immigration centre managers and the role of the researcher in…

1332

Abstract

Purpose

The purpose of this paper is to provide insight into the reciprocal relations between the caregiving imparted by immigration centre managers and the role of the researcher in responding to the care that is given by managerial caregivers. To enable this, we draw on a feminist theory of care ethics that considers individuals as relationally interdependent.

Design/methodology/approach

The analysis draws on a semi-structured interview study involving 20 Finnish immigration reception centre managers.

Findings

Insight is generated by reflecting on moments of care that arise between research participants and the researcher in a study of immigration centre management. We emphasise the importance of mature care, receptivity and engrossment in building caring relationships with research participants by acknowledging the care they give to others. Our findings draw attention to the moral and epistemological responsibility to practice care in organizational research.

Originality/value

The paper highlights the relationality between practicing care in immigration centre management and doing qualitative organizational research, both of which rely on mature care, receptivity and engrossment in order to meet the other morally. We draw attention to the moral responsibility to care which characterises researcher–researched relationships and emphasise the importance of challenging methodological discourses that problematise or dismiss care in qualitative organizational research.

Details

Qualitative Research in Organizations and Management: An International Journal, vol. 16 no. 2
Type: Research Article
ISSN: 1746-5648

Keywords

Article
Publication date: 12 June 2023

Mehdi Boussebaa

The purpose of this paper is to encourage scholars of international business (IB) to engage with the “decolonizing the university” project and reflect on what decolonizing might…

Abstract

Purpose

The purpose of this paper is to encourage scholars of international business (IB) to engage with the “decolonizing the university” project and reflect on what decolonizing might mean for IB research and education. The paper also argues that it is particularly important for IB scholars to join the decolonizing project given that the field’s main object of study – the multinational enterprise – has been central to colonialism.

Design/methodology/approach

An essay style is adopted to introduce the decolonizing project to IB and to explain why and how this scholarly field might benefit from engaging with it. As part of that, the paper calls upon IB scholars to work on decolonizing the field and to do so by not only interrogating its knowledge claims but also broadening the scope of its research so it can address the theme of neo-colonialism.

Findings

The paper reveals the conspicuous absence of IB scholars from the decolonizing project and situates such absence within a long-standing indifference within IB to the issue of colonialism.

Social implications

In learning about and engaging with the decolonizing project, IB scholars will be able to not only enrich IB theory and education but also help to tackle one of the grand challenges facing the modern world society, namely, social inequality and injustice rooted in colonialism.

Originality/value

It is hoped that this paper will stimulate reflection on IB’s absence from the decolonizing project and assist scholars in developing an understanding of the project’s rationale and underlying literature. It is also hoped that the paper will open dialogue within IB about how this field might be decolonized and help scholars engage meaningfully with other disciplines as they do so.

Details

Critical Perspectives on International Business, vol. 19 no. 4
Type: Research Article
ISSN: 1742-2043

Keywords

Article
Publication date: 1 July 2014

S.O. Ismaila, O.G. Akanbi and C.N. Ngassa

The purpose of this study was to obtain some anthropometric dimensions of students in secondary schools necessary for the design of school furniture and use them to establish the…

Abstract

Purpose

The purpose of this study was to obtain some anthropometric dimensions of students in secondary schools necessary for the design of school furniture and use them to establish the models that best determine the relationships among the anthropometric dimensions and standing height.

Design/methodology/approach

A total of 480 students aged 10 to 18 years (n = 480, SD = ± 2.3 years) were randomly selected from eight public and eight private secondary schools in Ibadan, South West Nigeria. All the dimensions were subjected to curve estimation using Statistical Products and Services Solution 16.0 Statistical Package. The models with p < 0.005 and highest coefficient of determinations were selected as the best models to predict the relationships among the standing height and other variables.

Findings

The study proposes 11 models using standing height to estimate necessary anthropometric dimensions for the design of school furniture. The results of the study show that all anthropometric dimensions correlate more non-linearly with standing height than linearly.

Originality/value

The proposed models will have wide applications for the estimation of anthropometric data necessary for the design and construction of school furniture for use in secondary schools in South Western Nigeria.

Details

Journal of Engineering, Design and Technology, vol. 12 no. 3
Type: Research Article
ISSN: 1726-0531

Keywords

1 – 10 of 32