Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Aj Pennings"'
Autor:
F. W. Cordewener, Aj Pennings, J. E. Bergsma, Ruud R.M. Bos, Cornelis A.P. Joziasse, Dirk W. Grijpma
Publikováno v:
Colloid & Polymer Science. 276:968-975
The influence of morpho-logy on the hydrolytic degradation behavior of poly(L-lactide) has been studied. High molecular weight and highly crystalline as-polymerized poly(L-lactide) was obtained in high yields through melt polymerization. Poly(L-lacti
Autor:
H. L. Bartels, J. M. Schakenraad, I. Stokroos, B. van der Lei, Aj Pennings, W. F. A. den Dunnen, E. H. Blaauw, P. H. Robinson
Publikováno v:
Microsurgery. 17:348-357
The aim of this study was to compare the speed and quality of nerve regeneration after reconstruction using a biodegradable nerve guide or an autologous nerve graft. We evaluated nerve regeneration using light microscopy, transmission electron micros
Autor:
J.M. Schakenraad, P. H. Robinson, H. L. Bartels, Aj Pennings, B. van der Lei, V. A. B. Doorn, R. A. E. C. Hermens
Publikováno v:
Microsurgery. 16:482-487
In microvenous prosthetic surgery a continuous search for better patency rates is necessary to enable a clinical application, In this search for better patencies, modifications in the wall structure are being made. Directions found in the literature
Autor:
Je Bergsma, Wc Debruijn, Rudolf R.M. Bos, Aj Pennings, Geert Boering, A. J. Nijenhuis, Fr Rozema
Publikováno v:
Journal of Materials Science: Materials in Medicine. 5:575-581
High molecular weight as-polymerized poly(I-lactide) (PLLA) has been successfully used for fracture fixation and orbital floor reconstruction in animals and humans. As this PLLA takes more than 3 years to resorb, a method was developed to obtain insi
Publikováno v:
Colloid & Polymer Science. 272:1068-1081
The observed brittle fracture behavior of amorphous polylactides seems to be contradicted by the low value ofC ∞ =2 determined for poly(L-lactide) by Flory and coworkers. Such very flexible polymer chains deform by shear yielding, and fracture in a
Publikováno v:
Journal of Materials Science-Materials in Medicine, 4(5), 521-525. SPRINGER
The aim of this study is to evaluate the functional and cell biological applicability of a two-ply nerve guide constructed of a PLLA/PCL (i.e. poly-L-lactide and poly-epsilon-caprolactone) copolymer. To do so, we performed a cytotoxicity test, a subc
Autor:
Aj Pennings, H. van der Werff
Publikováno v:
Colloid and Polymer Science. 269:747-763
The influence of tensile deformation on gel-spun and hor-drawn ultra-high molecular weight polyethylene fibers has been investigated. In high modulus polyethylene fibers no deformation energy is used to break chemical bonds during deformation, and fl
Autor:
Aj Pennings, H Vanderwerff
Publikováno v:
Polymer Bulletin. 25:379-384
High-strength and high-modulus poly(p-xylylene) (PPX) fibers show no creep at room temperature and retain at 200°C, in air or in nitrogen atmosphere, still 50 to 60% of their tensile strengths at room temperature, whereas the modulus does not change
Publikováno v:
Microsurgery, 12(6), 412-419
Biodegradable polyurethane-based (PU) nerve guides, instilled with or without ACTH4-9 analog (a melanocortin) were used for bridging an 8 mm gap in the rat sciatic nerve and were evaluated for function and histological appearance after 16 weeks of im
Autor:
A. J. Nijenhuis, H. Elema, J.H. de Groot, René P. H. Veth, H.W.B. Jansen, J. Klompmaker, Aj Pennings
Publikováno v:
Colloid and Polymer Science. 268:1082-1088
Several series of porous, biodegradable PU/PLLA foams were used for meniscus reconstruction in dogs. PLLA-fiber reinforced PU/PLLA composites, PU/PLLA, and PU foams were implanted in severe meniscus lesions. The healing process was initiated as a res