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1 – 10 of 107Doaa H. Elgohary, Tamer F. Khalifa, Mona M. Salem, Nermin M. Aly, Elham Hassan and Ashraf A. Shamaa
The purpose of this work is to perform an application study on experimental animals (dogs) to investigate the efficiency of using weft knitted mesh fabric as cardiac support mesh…
Abstract
Purpose
The purpose of this work is to perform an application study on experimental animals (dogs) to investigate the efficiency of using weft knitted mesh fabric as cardiac support mesh to support left ventricular hypertrophy.
Design/methodology/approach
In this work, weft-knitted mesh sample “Knitted Cardiac Support Mesh” manufactured using Nylon (6, 6) yarns, with count 20 Denier and medium mesh size, was placed around the two ventricles to prevent further dilatation, support and reduce left ventricular wall stress.
Findings
Medical textile is a rapidly expanding field in technical textiles that are widely used in a variety of medical applications. One of these medical textile applications is “Knitted Cardiac Support Mesh”, which is used in the treatment of Dilated Cardiomyopathy.
Originality/value
After the implantation of the manufactured Knitted Cardiac Support Mesh around the myocardium, all dogs survived for three months before being euthanized, and some clinical examinations were performed to investigate and evaluate the sample performance. It was demonstrated from the experimental application, that the nylon mesh sample performed the best during the surgical operation due to its good ability to stretch and recover at a moderate rate, as well as the textile mesh lightweight.
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M.A. Eastwood, W.D. Mitchell, A.A. McConnell and J.M. Findlay
Diverticular disease of the colon is an acquired disorder of bowel muscle which hypertrophies, that is, it thickens. The hypertrophied muscle causes an increase in pressure in the…
Abstract
Diverticular disease of the colon is an acquired disorder of bowel muscle which hypertrophies, that is, it thickens. The hypertrophied muscle causes an increase in pressure in the bowel and the mucosal lining is pushed out (herniates) through the inherently weak points of the muscle to form pockets (diverticulae). The process is rather similar to the egg‐like distortions seen in the side wall of a defective tyre. In most cases, these diverticulae cause no trouble whatsoever, but in a few they may lead to complications of bleeding, infection, abscess formation and even perforation.
Piotr Zmyślony and Joanna Kowalczyk-Anioł
The purpose of this paper is twofold: first, to analyze the phenomenon of urban tourism hypertrophy (UTH) in the context of the process of tourism-related social conflicts…
Abstract
Purpose
The purpose of this paper is twofold: first, to analyze the phenomenon of urban tourism hypertrophy (UTH) in the context of the process of tourism-related social conflicts formation; and second, to discuss the extent to which destination management organizations (DMOs) are prepared to take responsibilities and actions undertaken in this process.
Design/methodology/approach
The paper adopts conflict management (CM) theory as a framework for discussing UTH within the city context. The paper then analyzes the empirical example of social conflict in Kraków (Poland) to assess the predispositions of key institutions engaged in destination governance to lead CM process triggered by UTH. The Circle of Conflict approach proposed by C. Moore (The Mediation Process: Practical Strategies for Resolving Conflict, Jossey Bass, San Francisco, CA, 2014) is utilized as the main application method.
Findings
The study shows that DMO is the most appropriate entity to deal with UTH as a conflict manager; however, it has insufficient resources to fulfill all requirements relating to that role. Therefore, the range of responsibilities and roles of the contemporary DMOs should be completed with CM as the permanent task during UTH crisis.
Research limitations/implications
The example study was based on interviews carried out with a limited number of informants. Also, the contextual nature of the research as well as specific destination governance structure in Kraków blurred the picture of DMOs predispositions to leading the CM process.
Practical implications
The study supports urban DMO managers by suggesting a tool of diagnosis and intervention in UTH-induced conflicts. Thus, it makes fulfilling the mediator role a destination governance task.
Social implications
CM brings agreement among parties as to the understanding of the nature of conflict, which forms the basis for quick and mutually agreed actions, according to sustainable development principles.
Originality/value
The paper proposes an alternative approach to mitigate UTH-related problems in cities by adopting the CM framework which emphasizes the universal nature of conflict causes and proposes adequate tools for undertaking actions by DMOs.
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Ugur Caligulu, Mustafa Taskin, Haluk Kejanli and Ayhan Orhan
The purpose of this paper is to investigate interface characterization of CO2 laser welded AISI 304 austenitic stainless steel and AISI 1010 low carbon steel couple. Laser welding…
Abstract
Purpose
The purpose of this paper is to investigate interface characterization of CO2 laser welded AISI 304 austenitic stainless steel and AISI 1010 low carbon steel couple. Laser welding experiments were carried under argon and helium atmospheres at 2000, 2250 and 2500 W heat inputs and 200‐300 cm/min welding speeds.
Design/methodology/approach
The microstructures of the welded joints and the heat affected zones (HAZ) were examined by optical microscopy, SEM, EDS and X‐Ray analysis. The tensile strength of the welded joints was measured.
Findings
The result of this study indicated that the width of welding zone and HAZ became much thinner depending on the increased welding speed. On the other hand, this width widened depending on the increased heat input. Tensile strength values also confirmed this result. The best properties were observed at the specimens welded under helium atmosphere, at 2500 W heat input and at 200 cm/min welding speed.
Originality/value
There are many reports which deal with the shape and solidification structure of the fusion zone of laser beam welds in relation to different laser parameters. However, the effect of all influencing factors of laser welding has up to now not been extensively researched. Much work is required for understanding the combined effect of laser parameters on the shape and microstructure of the fusion zone. This paper, therefore, is concerned with laser power, welding speed, defocusing distance and type of shielding gas and their effects on the fusion zone shape and final solidification structure of some stainless steels.
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Mansourou Samba Garba and Sherazede Bouderbala
The purpose of this study is to investigate the effect of olive cake (OC) on oxidant/antioxidant biomarkers, lipase activity and on the histological analysis of epididymal fat, in…
Abstract
Purpose
The purpose of this study is to investigate the effect of olive cake (OC) on oxidant/antioxidant biomarkers, lipase activity and on the histological analysis of epididymal fat, in high-fat diet (HFD)-induced obese rats.
Design/methodology/approach
Male obese rats were divided into two groups and were fed an HFD supplemented (HFD-OC) or not (HFD) with OC for 28 days. A control group was fed a standard diet for the same experimental period.
Findings
HFD significantly increased body weight, which was reduced by OC in the HFD-OC compared to HFD (p = 0.038). Lipase activity was higher (52%; p = 0.009) in the HFD group than the control group. Administration of OC to the obese rats decreased significantly this activity (38%; p = 0.025) compared to the HFD group. Serum thiobarbituric acid-reactive substances, lipid hydroperoxide and advanced oxidation protein products levels were significantly increased in the HFD group than the control group (p = 0.032, p = 0.023 and p = 0.017, respectively). These levels were significantly reduced in HFD-OC compared to the HFD group (p = 0.030, p = 0.021 and p = 0.010, respectively). Superoxide dismutase, glutathione peroxidase and catalase activities were decreased (53%; p = 0.04), (61%; p = 0.03) and (32%; p = 0.002), in the HFD group than the control group. OC restored these activities (46%; p = 0.01), (58%; p = 0.003) and (30%; p = 0.0003) in the HFD-OC rats than the HFD rats. Consumption of the HFD resulted in adipocyte hypertrophy. Indeed, epididymal adipocyte size was significantly larger in the HFD group than the control group (p = 0.0001), whereas it was reduced in the HFD-OC compared to the HFD group (p = 0.012).
Originality/value
OC possesses an anti-obesity effect. This effect might be mediated by lipase inhibition, reduced oxidative stress and increased antioxidant activities. In addition, the reduction of fat accumulation in adipose tissue by OC consumption is reflected by reducing adipocyte size.
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– The purpose of this paper is to present a process, grounded in Buddhist practical wisdom, which trains managers to negotiate effectively.
Abstract
Purpose
The purpose of this paper is to present a process, grounded in Buddhist practical wisdom, which trains managers to negotiate effectively.
Design/methodology/approach
After comparing Western notions of phronesis/prudentia with insights from Buddhist tradition, it reports on the author's 20+years’ work in cross-cultural communication-skills training and examines sample training exercises.
Findings
Even experienced business-people rarely register the detail of what happens in their meetings. Simple behavioural routines, using checklists, can help here. The self-image of a problem-solver, reinforced by corporate culture, produces an urge to prove oneself right. So people get locked in to abstract, analytical thinking, and interpersonal relations are inhibited. A good way to overcome this constraint is to practise applying certain heuristics, or rules-of-thumb, for addressing contentious points in a negotiation.
Practical implications
An impractical ideology of analytical perfection dominates much of corporate cultures; much management education suffers from a hypertrophy of theory. A different, more practical approach seems overdue. A good way to catalyse a paradigm shift is indirectly, by focusing on specific behaviours. There are some important goals which we cannot attain by an instrumental process.
Social implications
Unethical business behaviour, which is also ineffective, is often rooted in mistrust of direct experience. To improve ethics and effectiveness, businesses and managers need to recognise non-instrumental goals. Important as they are, efficiency and profitability are subordinate to the need for people to stay sane, to continue learning and to grow as humans, in the course of doing business.
Originality/value
Buddhist speech ethics and the culture of skill-in-means have much to offer management education.
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The purpose of this paper is to trace the cultural roots of the presently ongoing crisis.
Abstract
Purpose
The purpose of this paper is to trace the cultural roots of the presently ongoing crisis.
Design/methodology/approach
The approach is to collect rankings of perceived goals of business leaders in 17 countries, from their employees who are attending evening MBA courses.
Findings
There are marked differences in goal ranking between countries; overall ranking across countries follows the US model, but with exceptions.
Research limitations/implications
Data collection was between 1995 and 2002 and analysis is based on judgment of evening MBA students with day jobs.
Practical implications
This paper explains the present financial crisis from a hypertrophy of US cultural goals: growth, greed, and short‐term gains.
Originality/value
The paper illustrates the unusual but credible data source from which the crisis could have been predicted.
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This paper describes an investigation into the ability of man to withstand the environmental stresses existing at the high altitudes associated with supersonic flight. The medical…
Abstract
This paper describes an investigation into the ability of man to withstand the environmental stresses existing at the high altitudes associated with supersonic flight. The medical histories of a group of pilots who had been exposed to altitudes in excess of 50,000 ft. were compared with those of a control group whose flying had been confined to normal altitudes. The total exposure time of the test group was estimated to be in excess of 35,000 hours. Dr Charles I. Barron is the Medical Director of the Lockheed‐California Company. He is a graduate of the University of Illinois College of Medicine, and he served as a flight surgeon in the Army Air Corps during World War II. He has been engaged in extensive research work and has published numerous papers on the effects of aircraft noise, microwave radiation, escape systems, decompression, and on various aspects of human engineering. He is a past president of the Aerospace Medical Association and has served on the National Research Council Committee. At present, he is the Chairman of the Research Advisory Committee on Biotechnology and Human Research for N.A.S.A. and Chairman of the Medical Advisory Council to the Federal Air Surgeon. He is a lecturer in aviation physiology in the Aerospace Safety Division at U.S.C., and an Associate Professor of Aerospace Pathology at U.C.L.A.
In this second part of the review the roles that copper and dietarycarbohydrate play in the cardiovascular system, pregnancy and lactation,haemopoiesis, and in male and female…
Abstract
In this second part of the review the roles that copper and dietary carbohydrate play in the cardiovascular system, pregnancy and lactation, haemopoiesis, and in male and female animals, are summarised. The mechanisms that may contribute to the exacerbation of copper deficiency when simple sugars are consumed are discussed.