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排序方式: 共有107条查询结果,搜索用时 15 毫秒
1.
Christopher John George Plummer Hans-Henning Kausch 《Macromolecular chemistry and physics.》1997,198(2):485-493
Free standing thin films of poly(ether ether ketone) crystallized in situ by heating from the glassy state have been shown to be suitable for high resolution transmission electron microscopy lattice imaging. Films mounted on coarse-mesh copper grids could also be observed in the deformed state, allowing lattice imaging of regions of strain induced crystallization at temperatures in the neighbourhood of the glass transition temperature. 相似文献
2.
Heiko Wendorff Jaroslav Pelisek Alexander Zimmermann Karin Mayer Heide Seidel Gregor Weirich Ingrid Hausser Corinna Siegel Alma Zernecke Hans-Henning Eckstein 《Cardiovascular pathology》2013,22(6):488-492
Ehlers–Danlos syndrome (EDS) leads to abnormalities in the synthesis of collagen and complications involving arterial vessels. We describe here a mutation in the intron 14 of the COL3A1 gene leading to EDS Type IV (EDS IV) associated with venous manifestations only. The patient, an 18-year-old male, suffered from truncal varicosity of the long saphenous vein on both sides. Conventional stripping surgery of the left saphenous vein revealed an extremely vulnerable ectatic superficial femoral vein. An inserted vein graft occluded, and venous thrombectomy was unsuccessful. A conservative anticoagulant and compression therapy finally succeeded. This is the first report describing EDS IV due to a mutation in intron 14 of the COL3A1 gene leading to venous manifestations without affecting arterial vessels at clinical presentation. Our findings imply that molecular genetic analysis should be considered in patients with unusual clinical presentation and that conservative therapy should be applied until a suspected clinical diagnosis has been secured. 相似文献
3.
Deppe H Horch HH Neff A 《The International journal of oral & maxillofacial implants》2007,22(1):79-86
PURPOSE: Recently, histologic studies in the beagle dog model demonstrated that CO2 laser-assisted implant decontamination can result in reosseointegration. Consequently, the purpose of this study was to assess the efficacy of CO2 laser-assisted therapy as compared with conventional therapy, with the concomitant use of beta-tricalcium phosphate, in humans. MATERIALS AND METHODS: The study included 32 patients with 73 ailing implants. In the laser group, 22 implants were treated with soft tissue resection following laser decontamination; whereas in 17 implants, bone augmentation was performed. In the control group, soft tissue resection after conventional decontamination was performed in 19 implants, augmentation in 15 implants. Results were evaluated 4 months after surgery and in May 2004. RESULTS: Four months after therapy, there were no significant differences in distance from implant shoulder to the first bone contact (ie, DIB values) between implants undergoing laser decontamination and soft tissue resection and implants treated with conventional decontamination followed by soft tissue resection. At the end of the study, there was a statistically significant difference between these 2 groups. Four months after therapy, DIB values after laser decontamination and augmentation were significantly more favorable than after conventional decontamination and augmentation. This difference was no longer detectable at the end of the study. CONCLUSION: Based on the results of this study, it may be concluded that the treatment of peri-implantitis may be accelerated by using a CO2 laser concomitant with soft tissue resection. However, with respect to long-term results in augmented defects, there seems to be no difference between laser and conventional decontamination. 相似文献
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Zimmermann A Sader R Hoole P Bressmann T Mady K Horch HH 《Clinical linguistics & phonetics》2003,17(4-5):273-281
This study aimed to discover whether the surgical treatment of oral cavity tumours only affects on articulation or whether it also leads to a change in voice quality and fundamental frequency. Twelve participants were examined pre- and postoperatively for mean speaking fundamental frequency, standard deviation of the mean fundamental frequency, harmonic-to-noise-ratio and intrinsic pitch. All the parameters showed a substantial postoperative change in some patients. 相似文献
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Nurdan Özkucur Hans‐Henning Epperlein Richard H.W. Funk 《Developmental dynamics》2010,239(7):2048-2057
Several studies have reported that endogenous ion currents are involved in a wide range of biological processes from single cell and tissue behavior to regeneration. Various methods are used to assess intracellular and local ion dynamics in biological systems, e.g., patch clamping and vibrating probes. Here, we introduce an approach to detect ion kinetics in vivo using a noninvasive method that can electrophysiologically characterize an entire experimental tissue region or organism. Ion‐specific vital dyes have been successfully used for live imaging of intracellular ion dynamics in vitro. Here, we demonstrate that cellular pH, cell membrane potential, calcium, sodium and potassium can be monitored in vivo during tail regeneration in the axolotl (Ambystoma mexicanum) using ion‐specific vital dyes. Thus, we suggest that ion‐specific vital dyes can be a powerful tool to obtain electrophysiological data during crucial biological events in vivo. Developmental Dynamics 239:2048–2057, 2010. © 2010 Wiley‐Liss, Inc. 相似文献
9.
Hans-Henning Spitalny M.D. 《Aesthetic plastic surgery》1993,17(2):157-161
This article presents a newly designed instrument capable of being used for three surgical procedures: (1) removal of dermis (without epithelium) from a donor site, (2) dissection of specific muscles that cause cutaneous folds, (3) implantation of the dermis under a cutaneous depression or fold. 相似文献
10.
Gabriele Calaminus Wolfgang Dörffel Katja Baust Carmen Teske Marianne Riepenhausen Jürgen Brämswig Hans-Henning Flechtner Susanne Singer Andreas Hinz Günther Schellong 《Supportive care in cancer》2014,22(6):1519-1529