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New Design of Textile Vascular Prostheses for the Reconstruction of Small Diameter Vascular Blood Vessels

Journal of Donghua University(English Edition) 2013年第5期30卷 401-405页

作者： CHRZANOWSKA Olga struszczyk marcin henryk KRUCINSKA Izabella Department of Material and Commodity Sciences and Textile Metrology Center of Advanced Technologies of Human Friendly Textiles PRO HUMANO TEXFaculty of Material Technologies and Textile DesignUniversity of Technology

The general object of research is to design new idea of the semi-biodegradable,multilayered vascular prosthesis used for the reconstruction of significantly small diameter vascular vessels( microreconstruction). The paper studies the selection of appropriate sterilization technique for resorbable tubular structures made of poly( L-lactide-co-glicolide)( PLAGA) and nonbiodegradable tubular structures made of polypropylene( PP). The designed grafts are characterized by the physical properties as well as mechanical properties according to ISO 7198 ∶ 1998 ***,the process of the grafts fabrication will be explained considering the stages affected the critical properties of the elaborated textile implants. The increase of PLAGA melt-electrospun tubular structures mechanical properties was observed due to the thermal stabilization use. The ethylene oxide( EO) and steam sterilization had a destructive effect on the designed PLAGA meltelectrospun tubular, fibrous structures, whereas the irradiation yielded in the changes in mechanical and physical properties on the acceptable level,taking into account the future clinical applications.

关键词： vascular prostheses melt-electrospinning melt-blown sterilization

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Environmental Impact of Using Different Energy Sources for Family House Heating

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Journal of Energy and Power Engineering 2012年第9期6卷 1408-1415页

作者： marcin Bukowski henryk Manteuffel Szoege Institute of Technology and Life Sciences Elblag 82-300 Poland Department of Agricultural Economics and International Economic Relations Warsaw University of Life Sciences Warsaw 02-787 Poland

Environmental impacts of using various sources of energy in heating a family house with 180 m2 of floor surface were compared by means of the SimaPro computer programme and attached to its databases, describing the environmental impacts of using typical materials and technologies. The set of compared heat energy sources comprised nine different sources. After normalisation （which meant recalculating the impacts into their proportions to the average impact of the kind, experienced by an average European in a year）, weighting （which meant attaching arbitrary weights to three aggregate impact categories according to a methodology Eco-indicator 99 E/E） and summation of the weighted results expressed in so-called ecopoints, the coal combustion furnace turned out to have the greatest impact. It was followed by an electric stove and an oil burning furnace. The wood burning furnace and the heat pump had the smallest impact, almost equal in size. Results indicate that in case of renewable energy carriers like wood, straw and pellets, the total environmental hazard factor in 70% and more is derived from the respiratory harmful inorganic emissions. Extending the analysis by a LC assessment of equipment （boilers and pumps） might change the order of technologies.

关键词： Family house heating environmental impact SimaPro application Eco-indicator 99 E/E.

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