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펠리페 케슬러,다니엘라 스테픈스,Gabriela A. Lando,Daniel E. Weibel,Patricia Pranke 한국조직공학과 재생의학회 2014 조직공학과 재생의학 Vol.11 No.1
The surface of Poly(sulfone) (PSU) and Polyurethane (PU) films were treated with ultraviolet (UV) light in the presence of oxygen to improve their wettability, adhesion and cell spreading properties. XPS and WCA results illustrated the effective conversion of the PSU and PU surfaces from hydrophobic to hydrophilic with grafting of new oxidized functional groups during the photochemical treatments. Treated films showed a larger number of adhered cells compared to the untreated films and that number of adhered cells was comparable to the number of adhered cells in the control group. The results showed that the cell response does not only depend on the hydrophilicity but on the chemical surface alterations which occur as a result of UV-assisted treatment in the presence of oxygen. Better cell adhesion, spreading and growing on the PSU and PU substrates modified by the present UV methodology confirmed the biocompatibility of the treated surfaces. Key words: poly(sulfone), polyurethane, UV surface functionalization, tissue engineering, cell spreading and adhesion
Mathur, N,Pednekar, MS,Sorensen, GS,Nagler, EM,Stoddard, AM,Lando, HA,Aghi, MB,Sinha, DN,Gupta, PC Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.6
Implementation of no tobacco policies in schools is associated with lower tobacco use among teachers and students. In this study we assessed the extent that a school-based intervention for teachers resulted in adoption and implementation of tobacco control policies. From a random sample of government schools ($8^{th}-10^{th}$), 72 were randomized into intervention and control conditions. Intervention included health education programs for teachers and support for tobacco control policy implementation. Adoption and implementation of policies were assessed at baseline and immediately after intervention. All 36 intervention and one control school adopted a tobacco-control policy. Higher enforcement of tobacco-control policy was at post intervention (OR=3.26; CI: 2.35, 4.54) compared to baseline in intervention schools. Some 64% of intervention and 28% control schools showed "improvement" in policy implementation. Adoption and implementation of no tobacco policies was positively impacted by intervention. This study provides support for scaling up of school-based tobacco control interventions to promote school tobacco control policies.