Search results

1 – 5 of 5
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 16 January 2017

Yihao Zheng, Yancheng Wang, Roland K. Chen, Sagar Deshpande, Noah S. Nelson, Steven R. Buchman and Albert J. Shih

To obtain a vascularized autologous bone graft by in-vivo tissue transformation, a biocompatible tissue transformation mold (TTM) is needed. An ideal TTM is of high geometric…

524

Abstract

Purpose

To obtain a vascularized autologous bone graft by in-vivo tissue transformation, a biocompatible tissue transformation mold (TTM) is needed. An ideal TTM is of high geometric accuracy and X-ray radiolucent for monitoring the bone tissue formation. The purpose of this study is to present the TTM design and fabrication process, using 3D reconstruction, stereolithography (SLA) and silicone molding.

Design/methodology/approach

The rat mandible, the targeted bone graft, was scanned by micro-computed tomography (CT). From the micro-CT images, the 3D mandible model was identified and used as the cavity geometry to design the TTM. The TTM was fabricated by molding the biocompatible and radiolucent silicone in the SLA molds. This TTM was implanted in a rat for in vivo tests on its biocompatibility and X-ray radiolucency.

Findings

SLA can fabricate the TTM with a cavity shape that accurately replicates that of the rat mandible. The bone formation inside of the silicone TTM can be observed by X-ray. The TTM is feasible for in vivo tissue transformation for vascularized bone reconstruction.

Research limitations/implications

Research of the dimensional and geometrical accuracy of the TTM cavity is required in the future study of this process.

Practical implications

The TTM fabricated in this presented approach has been used for in-vivo tissue transformation. This technique can be implemented for bone reconstruction.

Originality/value

The precision fabrication of the TTMs for in-vivo tissue transformation into autogenous vascularized bone grafts with complex structures was achieved by using SLA, micro-CT and silicone molding.

Details

Rapid Prototyping Journal, vol. 23 no. 1
Type: Research Article
ISSN: 1355-2546

Keywords

Access Restricted. View access options
Article
Publication date: 1 April 1992

Abraham B. (Rami) Shani, M. Tom Basuray, Steven A. Scherling and Janice L. Odell

Quality of work life (QWL) has become an increasingly popularcross‐cultural field of theory and practice. An examination of thecurrent state of the art revealed that the inquiry…

265

Abstract

Quality of work life (QWL) has become an increasingly popular cross‐cultural field of theory and practice. An examination of the current state of the art revealed that the inquiry paradigm is one of the areas that leads to the contradictory and mostly disjointed state of QWL knowledge. A phenomenological‐based approach is proposed and utilized in an exploratory study that examines MBA students′ QWL experiences in the USA and Hong Kong. Discusses the learnings both in terms of the approaches used and the QWL knowledge gained.

Details

Journal of Organizational Change Management, vol. 5 no. 4
Type: Research Article
ISSN: 0953-4814

Keywords

Access Restricted. View access options
Book part
Publication date: 8 February 2016

June Carbone and Naomi Cahn

This paper explores the relationship between feminist theory and rising economic inequality. It shows how greater inequality reflects the valorization of the stereotypically male…

Abstract

This paper explores the relationship between feminist theory and rising economic inequality. It shows how greater inequality reflects the valorization of the stereotypically male qualities of competition and hierarchy, producing a greater concentration of wealth among a small number of men at the top, shortchanging men more than women through the rest of the economy, and altering the way that men and women match up to each other in the creation of families. By creating a framework for further research on the relationship between the norms of the top and the disadvantages of everyone else in more unequal societies, the paper provides a basis for feminists to develop a new theory of social power.

The paper demonstrates how the development of winner-take-all income hierarchies, the political devaluation of families and communities, and the terms of the family values debate diminish equality and community. The paper addresses how to understand these developments as they affect both the structure of society and the allocation of power within our families in ways that link to the historic concerns of feminist theory. It accordingly ends by asking the “woman question” in a new way: one that revisits the stereotypically masculine and feminine and asks how they connect to hierarchy, one that considers whether the inclusion of women changes institutional cultures in predictable ways, and one that wonders whether the values that today are associated with more women than men offer a basis for the reconstruction of society more generally.

Details

Special Issue: Feminist Legal Theory
Type: Book
ISBN: 978-1-78560-782-0

Keywords

Access Restricted. View access options
Book part
Publication date: 25 March 2011

Robert H. Blank

As one of the most dynamic and consequential areas of biomedical research, neuroscience must be analyzed in a broader political context. Research initiatives, individual use, and…

Abstract

As one of the most dynamic and consequential areas of biomedical research, neuroscience must be analyzed in a broader political context. Research initiatives, individual use, and aggregate social consequences of unfolding knowledge about the brain and the accompanying applications require particularly close scrutiny because of the centrality of the brain itself to human behavior and thoughts. As one of the last frontiers of medicine, neuroscience has strong support because it promises to benefit many patients suffering from an array of behavioral, neurological, and mental disorders and injuries. Given the inevitability of expanded strategies for exploration and therapy of the brain, it is important that the political issues surrounding their application be clarified and debated before such techniques fall into routine use.

Details

Biology and Politics
Type: Book
ISBN: 978-0-85724-580-9

Access Restricted. View access options
Book part
Publication date: 31 July 2000

Steven R. Cox and Robin R. Radtke

Tax practitioners are accountable to multiple parties with divergent objectives when carrying out their function as both client advocates and Internal Revenue Service (IRS…

Abstract

Tax practitioners are accountable to multiple parties with divergent objectives when carrying out their function as both client advocates and Internal Revenue Service (IRS) agents. In addition, tax practitioners are employed by firms that simultaneously demand client satisfaction and tax law compliance. Thus, firm pressure may serve to magnify the level of goal incongruence faced by tax practitioners. This study measures the sources and levels of accountability pressure felt by practitioners. In addition, the study investigates how tax return behavior is affected by multiple sources of accountability pressure. A survey of 227 tax professionals is used to measure accountability pressure and responses to various tax scenarios. Results indicate that significant accountability pressure exists from respondents' firms to comply with the tax law and to please tax clients. Additionally, tax practitioners from larger CPA firms report feeling more accountability pressure from their employers. Finally, while the amount of reported accountability pressure differs across several demographic variables, actual tax return behavior seems to be affected only by the accountability pressure felt from respondents' firms to comply with the IRS.

Details

Advances in Taxation
Type: Book
ISBN: 978-0-76230-670-1

1 – 5 of 5
Per page
102050