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Proposal of a vertical wood splitting device
Ptáček, Josef ; Baláž, Adam (referee) ; Zeizinger, Lukáš (advisor)
This bachelor thesis deals with the research of components, types of structures and the functioning of the whole system in order to design a vertical hydraulic splitting device that uses the hydraulic circuit of a tractor. The theoretical part focuses on the types of structures and drive methods in the introduction. Then the focus is on the design elements and safety in the operation of the vertical hydraulic splitting device. The last chapter of this part is a detailed investigation of the components that are found in the hydraulic circuit of the given structure. The practical part deals with the design of the hydraulic circuit together with its elements. Subsequently, it deals with the design of the structure according to the specified parameters. Finally, a drawing documentation was created, which includes a drawing of the vertical hydraulic splitting assembly, a drawing of the welding sub-assembly of the frame structure and a profile drawing.
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Optimalization of ultrasonic interconnection
Gregor, Pavel ; Hejátková, Edita (referee) ; Buršík, Martin (advisor)
The thesis summarizes the basic knowledge of Wirebonding. It also closely studying the various influences on the final shape, strength and reliability of the bonds. In the experimental part are found the optimal settings of various wire bonders. For wire bonder TPT HB-10 are found the optimal settings for different types of surfaces, which were contacted.
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The embryonic formation of the primary mouth in vertebrates
Psutková, Viktorie ; Černý, Robert (advisor) ; Soukup, Vladimír (referee)
The primary mouth develops during early embryogenesis at the anterior end of the forming head and it is created from the ectoderm and the endoderm that directly juxtapose. The primary mouth is the first connection of the digestive system with the outside, which is undoubtedly a crucial step for further development of an organism. In most vertebrates, the primary mouth is getting opened by perforation of a thin septum, the oral membrane. The oral membrane is formed from the ectoderm and the endoderm, when the ectoderm pushes against endoderm. Surprisingly, developmental formation of the primary mouth is not identical in all vertebrates and we can commonly recognize three main developmental modes. In the most vertebrates clades, the primary mouth forms via the so called stomodeal invagination, which is often exemplified in the frog Xenopus leavis. The primary mouth of salamanders and lungfishes forms via the so called stomodeal collar and the primary mouth of teleost fishes forms via the so called stomodeal wedge. Moreover, in the hagfishes, the development of the primary mouth seems similar to the stomodeal invagination, but with some substantial differences in later formation. The particular mode of the primary mouth formation probably depends on the course of embryonic development and spatial...
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Optimalization of ultrasonic interconnection
Gregor, Pavel ; Hejátková, Edita (referee) ; Buršík, Martin (advisor)
The thesis summarizes the basic knowledge of Wirebonding. It also closely studying the various influences on the final shape, strength and reliability of the bonds. In the experimental part are found the optimal settings of various wire bonders. For wire bonder TPT HB-10 are found the optimal settings for different types of surfaces, which were contacted.
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Analýza singularity napětí s bi-materiálovým vrubem
Klusák, Jan ; Knésl, Zdeněk
The article deals with analysis of a stress state in the case of constructions with a bi-material notch. The eigenvalues as well as the stress singularity exponents are determined and discussed for three specific geometries of a bi-material notch and for varying material combinations. The eigenvalues are presented in dependence on Dundurs` composite parameters in so called Dundurs` parallelograms. A numerical example of critical stress estimation is given at the end of the article
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