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Design of Freeflight Helmet
Dvořák, František ; Jelenčík, Branislav (referee) ; Sládek, Josef (advisor)
This diploma thesis describes a redesign process of a flight helmet designated to open air flying. The design solution of this sophisticated equipment focuses primarily on safety, low total weight, excellent ergonomics and the best possible sound insulation. In this case, two-way radio communication and mobile phone connectivity are also very important aspects of the final product. The task is based on real demands of the Czech paramotors and aircraft equipment producer - Nirvana Systems s.r.o. Therefore this thesis doesn’t deal only with the aesthetic appearance of the new flight helmet, but it also fully reflects all technical, production and economic aspects.
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Design of Freeflight Helmet
Dvořák, František ; Jelenčík, Branislav (referee) ; Sládek, Josef (advisor)
This diploma thesis describes a redesign process of a flight helmet designated to open air flying. The design solution of this sophisticated equipment focuses primarily on safety, low total weight, excellent ergonomics and the best possible sound insulation. In this case, two-way radio communication and mobile phone connectivity are also very important aspects of the final product. The task is based on real demands of the Czech paramotors and aircraft equipment producer - Nirvana Systems s.r.o. Therefore this thesis doesn’t deal only with the aesthetic appearance of the new flight helmet, but it also fully reflects all technical, production and economic aspects.
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Optimalizace intenzivního chovu larev candáta obecného (Sander lucioperca L.)
MORAVA, Jakub
The aim of this master thesis was test, comapre and observe the best density of rotifers (Brachionus plicatilis) for growth and survival of zander (Sander lucioperca) larvae stage in the recirculation aquatic systém (RAS). The secondary experiment tests initial feeding of zander by dint of rotifers and consequently by mix of rotifers and artemia. Main experiment observe effect of different density of rotifers on survive and growth of zander. Other observe parameters such as Fulton´s coeficient, total lenght of fish, weight of fish, etc. Fish was divided into 4 groups with different density of feeding and the control group without feeding. Rotifers has been used in density of 2, 6, 10 and 20 pieces per larva. The best growth in "D" group has been compensate by lower surviving. On the other hand the best ratio of survive has been observe in "C" group, which showed lower growth. The optimal rate of growth and survive has been declared in "B" group, which were feed with dose of 6 pieces rotifers for larva. In the second experiment were observe body changes of zander after initial feeding by rotifers folowed with feeding mix of rotifers and artemia. There were observe successful fulfillment of gas bladder and deformation of fish body and spinal after 40 days of keeping larvae in RAS. In the end of experiment there were also observe defirmations body - for example missing lower jaw, upper jaw or both of them. Spinal deformities occured in the form of scoliosis, lordosis, kyphosis and zig zag distortion. The experiment has shown that unsuccessfully filled gas bladder is closely related to the formation of deformitiy in the zander. Another negative factor that affects the filling of the gas bladder is grease on the surface of the water level, so I recommend installing the grease trap in the fill phase of the gas bladder.
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