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Article
Publication date: 26 October 2018

Luca G. Campana, Paolo Di Barba, Fabrizio Dughiero, Michele Forzan, Maria Evelina Mognaschi, Rudy Rizzo and Elisabetta Sieni

In electrochemotherapy, flexible electrodes, composed by an array of needles, are applied to human tissues to treat large surface tumors. The positioning of the needles in…

Abstract

Purpose

In electrochemotherapy, flexible electrodes, composed by an array of needles, are applied to human tissues to treat large surface tumors. The positioning of the needles in the tissue depends on the surface curvature. The parallel needle case is preferred, as their relative inclinations strongly affect the actual distribution of electric field. Nevertheless, in some case, small inclinations are unavoidable. The purpose of this paper is to study the electric field distribution for non-parallel needles.

Design/methodology/approach

The effect of electrode position is evaluated systematically by means of numerical models and experiments on phantoms for two different angles (5° and 30°) and compared with the case of parallel needles. Potato model was used as phantom, as this tissue becomes dark after few hours from electroporation. The electroporation degree was gauged from the color changings on the potatoes.

Findings

The distribution of electric field in different needle configuration is found by means of finite element analysis (FEA) and experiments on potatoes. The electric field level of inclined needles was compared with parallel needle case. In particular, the electric field distribution in the case of inclined needles could be very different with respect to the one in the case of parallel needles. The degree of enhancement for different inclinations is visualized by potato color intensity. The FEA suggested that the needle parallelism has to be maintained as possible as if the tips are closer to each other, the electric field intensity could be different with respect to the one in the case of parallel needles.

Originality/value

This paper analyzes the effect of inclined electrodes considering also the non-linearity of tissues.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 38 no. 1
Type: Research Article
ISSN: 0332-1649

Keywords

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Book part
Publication date: 8 July 2021

Michael Bugeja

This chapter explores responsibility in the posttruth era in communication disciplines while documenting the civic and political ramifications of the current news climate…

Abstract

This chapter explores responsibility in the posttruth era in communication disciplines while documenting the civic and political ramifications of the current news climate in the United States.

Details

Media, Technology and Education in a Post-Truth Society
Type: Book
ISBN: 978-1-80043-907-8

Keywords

Content available
Article
Publication date: 1 March 2015

Alka Gupta, Christoph Streb, Vishal K. Gupta and Erik Markin

Acting entrepreneurially in nascent industries is a complex endeavor characterized by uncertainty and ambiguity. Nevertheless, entirely new industries do emerge, often as…

Abstract

Acting entrepreneurially in nascent industries is a complex endeavor characterized by uncertainty and ambiguity. Nevertheless, entirely new industries do emerge, often as a direct result of entrepreneurial behavior. We extend and apply discovery and creation approaches to study entrepreneurial behavior during industry emergence by means of qualitative analysis of a film about the personal computer (PC) industry℉s formative years. We find that discovery and creation behavior are fundamentally interrelated and share a common element: bricolage. Moreover, ideological activism is a major component of entrepreneurial behavior in a new industry℉s formative years during both creation and discovery processes. Implications for research and practice are discussed.

Details

New England Journal of Entrepreneurship, vol. 18 no. 2
Type: Research Article
ISSN: 2574-8904

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Book part
Publication date: 25 November 2019

Roudi Nazarinia Roy, Yolanda Mitchell, Anthony James, Byron Miller and Jessica Hutchinson

The transition to motherhood has been studied extensively, but primarily among participants in homogenous race/ethnicity relationships. The aim of the current study was to…

Abstract

The transition to motherhood has been studied extensively, but primarily among participants in homogenous race/ethnicity relationships. The aim of the current study was to explore the lived experiences of a diverse group of women in biracial and monoracial relationships experiencing the transition to motherhood (e.g., biracial or monoracial motherhood). Informed by the symbolic interaction framework, in-depth semi-structured interviews were conducted to investigate the expectations and experiences of first-time motherhood on a sample of 12 U.S. women. Their diverse stories contained multiple themes including an overarching theme of racial/ethnic differences in appropriate infant care, which surfaces during engagement in family and social support interactions. This analysis emphasizes the need for more diverse portrayals of motherhood. We discuss our findings in light of the literature and implications for future research and practice.

Content available
Article
Publication date: 30 September 2019

Naomi Algeo and Leanne M. Aitken

A recent paradigm-shift in patient care advocates for long-term recovery and quality of life in survivors of critical illness. Evidence suggests that occupational…

Abstract

Purpose

A recent paradigm-shift in patient care advocates for long-term recovery and quality of life in survivors of critical illness. Evidence suggests that occupational therapists in critical care can contribute to recovery in areas such as functional outcomes, length of stay and delirium, although poor role understanding can limit service-utilisation. The purpose of this study is to investigate current and future roles and practices of critical care occupational therapists in the UK.

Design/methodology/approach

Occupational therapists with clinical experience in adult critical care were invited to participate in a mixed-methods design using a locally developed online questionnaire and semi-structured interviews, concurrently. Descriptive statistics were generated through SPSS. Qualitative data were analysed using the framework approach.

Findings

Twelve occupational therapists participated in the survey element, with five continuing to interview. Occupational therapists described a multifaceted role in critical care where the majority reported practice in upper limb function, seating/positioning, cognition, psychosocial sequelae and discharge planning. Role and internal characteristics impacted on service delivery. It is envisaged that earlier intervention in a greater percentage of patients, a greater evidence-base, raising awareness and adequate staffing will be features for future development.

Originality/value

This study provides new insight into the current role and practices of adult critical care occupational therapists in England and generates insights into their role in addressing physical and non-physical morbidity for this patient cohort. Findings are preliminary in nature; however, future research is warranted to evaluate the effectiveness of interventions.

Details

Irish Journal of Occupational Therapy, vol. 47 no. 2
Type: Research Article
ISSN: 2398-8819

Keywords

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