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201.
Forest reserves can serve as an opportunity for studying natural processes in the wild. We studied the effect of easy-to-see tree level indicators on saproxylic beetles (Coleoptera), using window traps. Our study was conducted in old-growth mountainous spruce–beech forest Bukacka in the Orlicke Mts. (Czech Republic). Our analyses showed that the species composition of the study group and its response to tree level indicators in the relatively homogenous environment of old-growth mountainous forest area could be explained reasonably well through variance partitioning. The results indicated that the decay stage was the category hosting the highest level of explained variance with respect to saproxylics, followed by diameter and tree. Red-listed beetle species were nearly the same associated with conifers and broadleaves. Our results highlighted the desirability of using tree level indicators to assess insect diversity, using window traps on tree trunk. 相似文献
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Elder Michael Andrango Castro Svatava Konvickova Matej Daniel Zdenek Horak 《Computer methods in biomechanics and biomedical engineering》2017,20(14):1494-1501
The aim of our study was to identify potential critical levels of implantation of an osseointegrated prosthesis for above-knee amputees. The implant used was the OPRA system. It was inserted in the femur at four different amputation heights, characterized by their residual limb ratios (0.299, 0.44, 0.58 and 0.73). The stress and strain distribution was evaluated in the bone-implant system during walking, considering a body mass of 100 kg. Considerably high stimulus (11,489 με) in the tissue near the tip was found at the highest implantation level. All models presented small non-physiologic stress values in the tissue around the implant. The results revealed that the implantation level has a decisive effect on bone-implant performance. Mainly, the analysis indicates adverse biomechanical conditions for implantations in very short residual limbs. 相似文献
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The new familyStephanosporaceae (Basidiomycetes, Fungi) is proposed. As far as known, the range of the family covers aphyllophoroid (Lindtneria) and gastroid genera (Stephanospora) which are characterized by strongly sculptured and coloured spores. From the micro- and ultrastructural point of viewLindtneria andStephanospora are practically undistinguishable. Therefore, the two genera are considered to be closely related, despite their striking differences concerning the macromorphology of their carpophores. 相似文献
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Libor Necas Zoltan Cibula Jiri Behounek Jr. Stanislav Krivanek Zdenek Horak 《Computer methods in biomechanics and biomedical engineering》2017,20(12):1364-1372
The study was aimed at the clinical and biomechanical analyses of the sliding hip screw breakage with the use of finite element method. We have identified two patients with the sliding screw breakage. In the first patient, the biomechanical analysis revealed the reduced stress values σHMH not exceeding the yield limit or strength limit of the implant. The yield limit was exceeded in second one. Clinical and biomechanical analyses have demonstrated that adherence to technical requirements of the appropriate osteosynthesis implementation is the principal condition of timely healing since it prevents the material failure. 相似文献