6,445 research outputs found
Myocutane und fasciocutane freie LAppen zur Defektdeckung am Unterschenkel und FuĂ
Verglichen werden freie myocutane Lappenplastiken, wie der
Latissimus dorsi-Lappen, der Gracilis-Lappen und der untere Gluteallappen, sowie
fasciocutane Lappen, wie der Scapularlappen in ihrer Anwendung zur Defektdeckung
an Unterschenkel und FuĂ.
Es zeigte sich, daĂ myocutane Lappen eher geeignet sind tiefe Defekte mit Knochenverlusten
zu fĂŒllen, sie stellen ein gutes Lager fĂŒr eine Spongiosaplastik dar. Fasciocutane
Lappen eignen sich eher zur Deckung flÀchiger Defekte. Sie zeigen auch ohne
Muskulatur eine gute Durchblutung durch das epifasciale GefĂ€Ănetz. Sie sind dĂŒnner
als myocutane Lappen und benötigen bei groĂen Defekten an der EmpfĂ€ngerzone
keine zusÀtzliche Spalthauttransplantation
Grating-coupled excitation of multiple surface plasmon-polariton waves
The excitation of multiple surface-plasmon-polariton (SPP) waves of different
linear polarization states and phase speeds by a surface-relief grating formed
by a metal and a rugate filter, both of finite thickness, was studied
theoretically, using rigorous coupled-wave-analysis. The incident plane wave
can be either p or s polarized. The excitation of SPP waves is indicated by the
presence of those peaks in the plots of absorbance vs. the incidence angle that
are independent of the thickness of the rugate filter. The absorbance peaks
representing the excitation of s-polarized SPP waves are narrower than those
representing p-polarized SPP waves. Two incident plane waves propagating in
different directions may excite the same SPP wave. A line source could excite
several SPP waves simultaneously
10 years of experience with autogenous microsurgical lymphvessel-transplantation
The authors report their experience with the autogenous microsurgical
lymphvessel transplantation for the treatment of upper
(n = 60, 55 females and 5 males) and lower (n = 35, 10 females
and 25 males, primary lyphredemas = 11, secondary lymphredemas
= 24) limb edemas.
Regarding the volume measurements before and after lymphvessel
- transplantation in 58 patients there was a reduction of
volume differences between healthy and affected arms of more
than the half in 76 % of the patients after a mean follow-up
period of 2 1/2 years.
In 28 patients with unilateral redemas of the lower extremities
the volume reduction after a mean follow-up period of I 1/2
year compared to the healthy legs was more than 50 % in
20 patients.
As complications in the early period 2 postoperative erysipelas
were seen. One patient developed a Iymph cyst in the groin and
one patient had a postthrombotic lower leg rederna.
The authors conclude that lymphvessel transplantations therefore
seem to be a method to enhance significantly the lymphatic
transport if by conservation me ans alone no long term success
is seen
The multisensory basis of the self:From body to identity to others
By grounding the self in the body, experimental psychology has taken the body as the starting point for a science of the self. One fundamental dimension of the bodily self is the sense of body ownership that refers to the special perceptual status of oneâs own body, the feeling that âmy bodyâ belongs to me. The primary aim of this review article is to highlight recent advances in the study of body ownership and our understanding of the underlying neurocognitive processes in three ways. I first consider how the sense of body ownership has been investigated and elucidated in the context of multisensory integration. Beyond exteroception, recent studies have considered how this exteroceptively driven sense of body ownership can be linked to the other side of embodiment, that of the unobservable, yet felt, interoceptive body, suggesting that these two sides of embodiment interact to provide a unifying bodily self. Lastly, the multisensorial understanding of the self has been shown to have implications for our understanding of social relationships, especially in the context of selfâother boundaries. Taken together, these three research strands motivate a unified model of the self inspired by current predictive coding models
Serpentinite weathering and implications for Mars
In the search for life on Mars near-surface soil environments may be important habitats for life accessible to future missions. Serpentinite rocks have been documented on Mars, as well as other clay minerals including smectite and kaolinites. Previous studies of soils formed on serpentinites on Earth have documented the formation of extensive clays. Serpentinites are additionally of interest as habitats for life such as methanogens. Here we examine weathering of serpentinites from bedrock to soil surface, as a potential route for the formation of clay minerals on Mars from abundant ultramafic minerals. We additionally test for the presence of Fe-oxidizing bacteria in weathered serpentinite rocks. Fe-oxidizing bacteria have been previously demonstrated to affect dissolution rates of ultramafic minerals, and may produce important biosignatures
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