Purpose The purpose of this work is to perform an application study on experimental animals (dogs... more 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 examination...
The ultimate objective of textile industry in Egypt, as any other real industry in any developing... more The ultimate objective of textile industry in Egypt, as any other real industry in any developing country, is to expand the accessibility of its products/ services by exporting to diverse international markets through intermeshing with global network of supply chains. On the other hand, there is marketing orientation, which is one of business management approaches that can serve as a market access means for textile producers that qualifies them into engaging in global value chains, and hence contribute vigorously in prompting textile exports. The objective of this paper research is to specify the correlation between adopting the marketing orientation as business management approach, and engaging in exporting activities, among producers of Egypt’s textile sector. To fulfill this objective, the study utilizes comparative, analytical, and descriptive approach as study methodology. Through a designed survey study that aims at collecting primary data from a sample comprised of (16) texti...
Egypt's textile sector possesses a number of variant elements that characterize that sector a... more Egypt's textile sector possesses a number of variant elements that characterize that sector as national priority; however, this sector decades ago has started stumbling severely due to a cluster of reasons. One of these reasons is the inattention to textile marketing, which led by the time to the withdrawal of Egypt’s textiles from its significant contribution to Egypt’s economy as well as from effective existence in the stage international markets. This paper research aims at demonstrating how Strategic Brand Management (SBM) as one of marketing approaches has the potential effectiveness on textile marketing’s weaknesses and threats. Strategic Brand Management is one marketing approaches that combines the methods and of the strategic marketing management and brand management together. Conditionally when adopted as a firm’s full-activated function and/or orientation, this approach specifically is able to provide the full range of means that not only textile marketing but the who...
The aim of this study was to develop an experimentally-induced canine model of left ventricular h... more The aim of this study was to develop an experimentally-induced canine model of left ventricular hypertrophy through banding of the ascending aorta using nylon ties. Seven clinically normal dogs free of cardiovascular disease were used. Nylon tie was used in banding the mid-ascending aorta. Clinical, radiographic and echocardiographic evaluations were done at 1.5, 3 and 6 months. Dogs were euthanized at 6 months for post mortem and histopathological evaluation. Clinically, dogs did not exhibit any signs of cardiovascular disease at 1.5 or 3 months, while at 6 months two dogs (28.6 %) exhibited mild weight loss, exercise intolerance and heart murmurs. Radiographic evaluation revealed significant increase in cardiac size only at 6 months based on measurement of the cardiothoracic area evaluation. Echocardiography revealed increased left ventricular wall thickness starting from 1.5 month, although this increase was statistically significant at 3 and 6 months (p > 0.05). Left ventricu...
porous ceramic materials are required for many applications , such as filters, dust collectors, m... more porous ceramic materials are required for many applications , such as filters, dust collectors, membranes, catalyst carriers and lightweight components. 1 There are several ways to produce porous mullite ceramics. Even the purest mullite powders obtained from natural raw materials always contain small quantities of alkaline and alkaline-earth oxides that may form a silicate melt at low temperatures (e.g., ~1000°C for Na 2 O–SiO 2). 2 The most common method used to minimize the glassy phase amount, dissolve the remaining SiO 2 and increase the body porosity is etching. Chemical etching is conducted by immersing or swabbing the specimen with an acid or alkaline solution at various temperatures and times. 3 Thermal etching has received widespread acceptance among available etching techniques. It involves heating a polished specimen in a kiln for 10–30 min at 100–200°C below its sintering temperature. De Aza 4 calcined mullite at high temperatures (1300–1400°C) in firing atmospheres und...
This study demonstrated that the changes in functional and comfort properties of knitted cotton f... more This study demonstrated that the changes in functional and comfort properties of knitted cotton fabrics were determined by the knitted structure as well as type and concentration of finishing agent. To improve the comfort properties, one should ensure the smoothness of fabric surface, air permeability, heat transmittance as well as hydrophilicity of the knitted fabrics, by selecting the proper knit structure and/or by applying the proper finish such as bio-finish. Soft-finished fabric samples had lower tendency to shrinkage and lower stiffness unless compared with other finished fabrics. The functional properties of the finished cotton knits, i.e., antibacterial and water repellent, depend to a great extent on the type of finish.
In this study, three different reactive dyed single jersey cotton knits produced from different y... more In this study, three different reactive dyed single jersey cotton knits produced from different yarn counts, i.e., Ne 20/1, Ne 24/1, and Ne 30/1 were selected for studying the impact of functional finishes, i.e., soft, bio-antibacterial, and water-repellent, on their performance and comfort-properties. It was found that the variation in the evaluated properties is very much dependent on the yarn count as well as on the type and concentration of the finishing agent. An improvement in pilling levels and tactile properties, i.e., smoothness and softness, as well as in comfort properties, i.e., heat transmittance, air permeability as well as water-absorption, is achieved by the bio-treatment. An enhancement in dimensional stability, pilling levels, bursting strength, tactile properties along with a reasonable improvement in antibacterial efficiency is obtained by soft-finishing, taking in consideration its tendency to entrap heat and air inside the fabric structure. The same holds true ...
Health care sector is one of the most important sectors in our life which included the medical te... more Health care sector is one of the most important sectors in our life which included the medical textiles that combined textile technology with medical science. The present work is aimed to study and evaluate the properties of weft knitted textile mesh (knitted cardiac support mesh) manufactured using two different types of yarn materials at different counts. 20 &40 denier yarn counts were used for the manufacturing nylon samples. 50 denier yarn count was used for the manufacturing polyester samples. The nylon and polyester samples were produced with three different mesh sizes. Mechanical and physical tests were performed on the produced samples to investigate fabric ability to meet performance requirements, Tests results were statistically analyzed using T-test and F-test and evaluated using radar charts. For experimental application, sample (2) using yarn count (20D) with medium mesh size, it gave the best performance during execution at the surgical operation that can be interprete...
Currently, the use of Textile is being continuously expanded in fields including medical, militar... more Currently, the use of Textile is being continuously expanded in fields including medical, military, structural, telecommunications, electronics, and aerospace etc. applications. Thus the importance of the textiles increases constantly. The specific and critical character of the technical applications imposed a dynamic change in the fields of the design, engineering, production and testing. The traditional empirical approach has been replaced by the careful modeling, calculation of the properties, prediction of the behavior and the final evaluation of the performance. The modern approach is reflected on the majority of the recent research results, the patents and the scientific publications of the academic and industrial research community. Design is set to be a process for formulation of ideas and needs, then transforming these ideas to a product through adequate technology, technical characterization, and production processes. Meanwhile when dealing with technical textiles design, ...
... Han, SB and Chen, SK (2007) 'Effects of ISO 9000 on customer satisfaction',... more ... Han, SB and Chen, SK (2007) 'Effects of ISO 9000 on customer satisfaction', International Journal of Productivity and Quality Management, Vol. ... Sachdeva, A., Bhardwaj, A. and Sharma, VS (2007) 'Impact of ISO 9000 certification on performance of SMEs: a study of Indian ...
Purpose The purpose of this work is to perform an application study on experimental animals (dogs... more 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 examination...
The ultimate objective of textile industry in Egypt, as any other real industry in any developing... more The ultimate objective of textile industry in Egypt, as any other real industry in any developing country, is to expand the accessibility of its products/ services by exporting to diverse international markets through intermeshing with global network of supply chains. On the other hand, there is marketing orientation, which is one of business management approaches that can serve as a market access means for textile producers that qualifies them into engaging in global value chains, and hence contribute vigorously in prompting textile exports. The objective of this paper research is to specify the correlation between adopting the marketing orientation as business management approach, and engaging in exporting activities, among producers of Egypt’s textile sector. To fulfill this objective, the study utilizes comparative, analytical, and descriptive approach as study methodology. Through a designed survey study that aims at collecting primary data from a sample comprised of (16) texti...
Egypt's textile sector possesses a number of variant elements that characterize that sector a... more Egypt's textile sector possesses a number of variant elements that characterize that sector as national priority; however, this sector decades ago has started stumbling severely due to a cluster of reasons. One of these reasons is the inattention to textile marketing, which led by the time to the withdrawal of Egypt’s textiles from its significant contribution to Egypt’s economy as well as from effective existence in the stage international markets. This paper research aims at demonstrating how Strategic Brand Management (SBM) as one of marketing approaches has the potential effectiveness on textile marketing’s weaknesses and threats. Strategic Brand Management is one marketing approaches that combines the methods and of the strategic marketing management and brand management together. Conditionally when adopted as a firm’s full-activated function and/or orientation, this approach specifically is able to provide the full range of means that not only textile marketing but the who...
The aim of this study was to develop an experimentally-induced canine model of left ventricular h... more The aim of this study was to develop an experimentally-induced canine model of left ventricular hypertrophy through banding of the ascending aorta using nylon ties. Seven clinically normal dogs free of cardiovascular disease were used. Nylon tie was used in banding the mid-ascending aorta. Clinical, radiographic and echocardiographic evaluations were done at 1.5, 3 and 6 months. Dogs were euthanized at 6 months for post mortem and histopathological evaluation. Clinically, dogs did not exhibit any signs of cardiovascular disease at 1.5 or 3 months, while at 6 months two dogs (28.6 %) exhibited mild weight loss, exercise intolerance and heart murmurs. Radiographic evaluation revealed significant increase in cardiac size only at 6 months based on measurement of the cardiothoracic area evaluation. Echocardiography revealed increased left ventricular wall thickness starting from 1.5 month, although this increase was statistically significant at 3 and 6 months (p > 0.05). Left ventricu...
porous ceramic materials are required for many applications , such as filters, dust collectors, m... more porous ceramic materials are required for many applications , such as filters, dust collectors, membranes, catalyst carriers and lightweight components. 1 There are several ways to produce porous mullite ceramics. Even the purest mullite powders obtained from natural raw materials always contain small quantities of alkaline and alkaline-earth oxides that may form a silicate melt at low temperatures (e.g., ~1000°C for Na 2 O–SiO 2). 2 The most common method used to minimize the glassy phase amount, dissolve the remaining SiO 2 and increase the body porosity is etching. Chemical etching is conducted by immersing or swabbing the specimen with an acid or alkaline solution at various temperatures and times. 3 Thermal etching has received widespread acceptance among available etching techniques. It involves heating a polished specimen in a kiln for 10–30 min at 100–200°C below its sintering temperature. De Aza 4 calcined mullite at high temperatures (1300–1400°C) in firing atmospheres und...
This study demonstrated that the changes in functional and comfort properties of knitted cotton f... more This study demonstrated that the changes in functional and comfort properties of knitted cotton fabrics were determined by the knitted structure as well as type and concentration of finishing agent. To improve the comfort properties, one should ensure the smoothness of fabric surface, air permeability, heat transmittance as well as hydrophilicity of the knitted fabrics, by selecting the proper knit structure and/or by applying the proper finish such as bio-finish. Soft-finished fabric samples had lower tendency to shrinkage and lower stiffness unless compared with other finished fabrics. The functional properties of the finished cotton knits, i.e., antibacterial and water repellent, depend to a great extent on the type of finish.
In this study, three different reactive dyed single jersey cotton knits produced from different y... more In this study, three different reactive dyed single jersey cotton knits produced from different yarn counts, i.e., Ne 20/1, Ne 24/1, and Ne 30/1 were selected for studying the impact of functional finishes, i.e., soft, bio-antibacterial, and water-repellent, on their performance and comfort-properties. It was found that the variation in the evaluated properties is very much dependent on the yarn count as well as on the type and concentration of the finishing agent. An improvement in pilling levels and tactile properties, i.e., smoothness and softness, as well as in comfort properties, i.e., heat transmittance, air permeability as well as water-absorption, is achieved by the bio-treatment. An enhancement in dimensional stability, pilling levels, bursting strength, tactile properties along with a reasonable improvement in antibacterial efficiency is obtained by soft-finishing, taking in consideration its tendency to entrap heat and air inside the fabric structure. The same holds true ...
Health care sector is one of the most important sectors in our life which included the medical te... more Health care sector is one of the most important sectors in our life which included the medical textiles that combined textile technology with medical science. The present work is aimed to study and evaluate the properties of weft knitted textile mesh (knitted cardiac support mesh) manufactured using two different types of yarn materials at different counts. 20 &40 denier yarn counts were used for the manufacturing nylon samples. 50 denier yarn count was used for the manufacturing polyester samples. The nylon and polyester samples were produced with three different mesh sizes. Mechanical and physical tests were performed on the produced samples to investigate fabric ability to meet performance requirements, Tests results were statistically analyzed using T-test and F-test and evaluated using radar charts. For experimental application, sample (2) using yarn count (20D) with medium mesh size, it gave the best performance during execution at the surgical operation that can be interprete...
Currently, the use of Textile is being continuously expanded in fields including medical, militar... more Currently, the use of Textile is being continuously expanded in fields including medical, military, structural, telecommunications, electronics, and aerospace etc. applications. Thus the importance of the textiles increases constantly. The specific and critical character of the technical applications imposed a dynamic change in the fields of the design, engineering, production and testing. The traditional empirical approach has been replaced by the careful modeling, calculation of the properties, prediction of the behavior and the final evaluation of the performance. The modern approach is reflected on the majority of the recent research results, the patents and the scientific publications of the academic and industrial research community. Design is set to be a process for formulation of ideas and needs, then transforming these ideas to a product through adequate technology, technical characterization, and production processes. Meanwhile when dealing with technical textiles design, ...
... Han, SB and Chen, SK (2007) 'Effects of ISO 9000 on customer satisfaction',... more ... Han, SB and Chen, SK (2007) 'Effects of ISO 9000 on customer satisfaction', International Journal of Productivity and Quality Management, Vol. ... Sachdeva, A., Bhardwaj, A. and Sharma, VS (2007) 'Impact of ISO 9000 certification on performance of SMEs: a study of Indian ...
Uploads
Papers by Tamer Khalifa