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1
Antimicrobial Polypropylene Loaded by Silver Nano Particles

S. M. Gawish,S. Mosleh 한국섬유공학회 2020 Fibers and polymers Vol.21 No.1
Nowadays antimicrobial polypropylene fabrics are increased due to incorporation of nano metals and metal oxidesduring their production. In situ, synthesis of silver nano particles onto non-woven polypropylene (PP) fabric bearingantimicrobial properties was investigated. Silver nanoparticles were prepared by chemical method using silver nitrate,concentrations 5-40 m mole/l, sodium hydroxide and glucose as a reducing agent at 90 °C for 2 hrs. Then, padding, dryingand curing the PP treated fabric at 150 °C for 5 min was carried out. Silver nano particles dispersed onto PP was estimatedbefore and after five washings. Characterization of silver nano particles was investigated by, XRD, SEM and EDX, whichrevealed the presence of silver nanoparticles in the size range 20-40 nm. PP color for untreated and silver treated sampleswas evaluated at λmax 400 nm using colorimetric data L*, a*, b and colour strength (K/S). The antimicrobial activity of PPtreated fabric against some microorganisms such as S. aureus, E. coli and C. candida was evaluated after 24 hrs contact timeand proved to be highly effective with excellent results.
2
Thermo-economic approach for absorption air condition onboard high-speed crafts

Ibrahim S. Seddiek,Mosaad Mosleh,Adel A. Banawan 대한조선학회 2012 International Journal of Naval Architecture and Oc Vol.4 No.4
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  KCI
High-speed crafts suffer from losing a huge amount of their machinery energy in the form of heat loss with the exhaust gases. This will surely increase the annual operating cost of this type of ships and an adverse effect on the environment. This paper introduces a suggestion that may contribute to overcoming such problems. It presents the possibility of reusing the energy lost by the ships' exhaust gases as heating source for an absorption air condition unit onboard high-speed crafts. As a numerical example; the proposed method was investigated at a high-speed craft operating in Red Sea between Egypt and the Kingdom of Saudi Arabia. The results obtained are very satisfactory. It showed the possibility of providing the required ship's air condition cooling load during sailing and in port. Econo-mically, this will reduce the annual ship's operating cost. Moreover, it will achieve a valuable reduction of ship's emissions.
3
Thermo-economic approach for absorption air condition onboard high-speed crafts

Seddiek, Ibrahim S.,Mosleh, Mosaad,Banawan, Adel A. The Society of Naval Architects of Korea 2012 International Journal of Naval Architecture and Oc Vol.4 No.4
- 원문보기
High-speed crafts suffer from losing a huge amount of their machinery energy in the form of heat loss with the exhaust gases. This will surely increase the annual operating cost of this type of ships and an adverse effect on the environment. This paper introduces a suggestion that may contribute to overcoming such problems. It presents the possibility of reusing the energy lost by the ships' exhaust gases as heating source for an absorption air condition unit onboard high-speed crafts. As a numerical example; the proposed method was investigated at a high-speed craft operating in Red Sea between Egypt and the Kingdom of Saudi Arabia. The results obtained are very satisfactory. It showed the possibility of providing the required ship's air condition cooling load during sailing and in port. Economically, this will reduce the annual ship's operating cost. Moreover, it will achieve a valuable reduction of ship's emissions.