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Pongpak Bhumiwat,Bradley W. Fossum,Rony-Orijit Dey Hazra,Phob Ganokroj 대한정형외과학회 2024 Clinics in Orthopedic Surgery Vol.16 No.1
Inferior pole fractures of the patella are a type of patellar fracture that has various complexities. Most current techniques are associated with hardware-related complications, which is one of the main concerns when treating this complex fracture. We present a new technique that does not require metal implant removal, causes little to no irritation of the quadriceps muscle, and provides strong fixation that allows for early range of motion postoperatively.
Transition Metal Ion-Chelating Ordered Mesoporous Carbons as Noble Metal-Free Fuel Cell Catalysts
Dombrovskis, Johanna K.,Jeong, Hu Y.,Fossum, Kjell,Terasaki, Osamu,Palmqvist, Anders E. C. American Chemical Society 2013 Chemistry of materials Vol.25 No.6
<P>A new concept for noble metal-free polymer electrolyte membrane fuel cell catalysts has been developed. The catalysts consist of chelated transition metal ions incorporated in a nitrogen-functionalized ordered mesoporous carbon matrix, which is evidenced by a combination of X-ray absorption fine structure analysis and high-resolution transmission electron microscopy. The ordered mesoporous carbon matrix of the catalyst offers an exceptionally high specific surface area and allows conceptually for a high degree of tuning, enabling controlled variability of, e.g., pore size and curvature and thickness of the pore walls of the catalysts. Single cell fuel cell tests of membrane electrode assemblies prepared with a cathode made of iron- or cobalt-based versions of the catalyst show high power densities, reaching up to one-third of a commercial Pt/C catalyst at 0.6 V.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/cmatex/2013/cmatex.2013.25.issue-6/cm303357p/production/images/medium/cm-2012-03357p_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/cm303357p'>ACS Electronic Supporting Info</A></P>
Development and Evaluation of a New Apparatus for Continuous Perfusion ofIsolated Perfused Pig Heart
Mi-YoungAn,EmmanuelleP.Canel,In-HoJang,DidierRevel,TheresaW.Fossum,Nam-SikChung 대한수의학회 2002 Journal of Veterinary Science Vol.3 No.3
To develop a better model of isolated perfusedheart, a new aparatus of “coronary artery cannula-fixed-in-aortic tube” was developed for continuousnormothermic perfusion and compared to the Casalisapparatus with cold ischemia. Eight mongrel pigsw i t h t h e b o d y w e i g h t o f 1 8 t o 2 4 k g w e r e d i v i d e d h a l finto two groups.Al the continuous perfusion experimental heartsresumed a spontaneous heart beat and stabilizeddefibrilator or pacemaker, indicating no reperfusioninjury on the heart. Al the xperimental hearts did notshow fibrillation or stoped beating during the ntireexperiment, whereas the control hearts fibrillated. Twocontrol hearts toped beating, and only one of thetwo survived with the lp of pacemaker. Thecoronary systolic, diastolic, and mean presures weremore stable with low variation in the xperimentalhearts than the cold ischemic ontrol hearts. Theexperimental hearts consumed more oxygen than theAcording to these results, the continuous normothermicperfusion method by the new cannula, even thoughwith a short-period of hypothermic perfusion, providedbetter myocardial protection than the cold ischemia.