143 research outputs found
OPTIMALIZATION OF DISTRIBUTION MECHANISM FOR CONTROLLED-DRIVE ROTOR SPINNING MACHINE
katedra: KTS; pĹ™Ălohy: 4 vĂ˝kresy, 1 CD ROM; rozsah: 52 s., 59s. obr. pĹ™Ăloh.This diploma thesis focuses on traversing bar system of rotor spinning machine. The main task is a construction of mathematical model describing the manner of the traversing bar system and design of component units absorbing energy in reversal points of distribution movement. Input characteristics of dural and composite distribution poles were experimentally tested and analysed. The mathematical model is constructed in Pro/Engineer programme and searches for optimal tuning of elastic absorbing units of traversing bar system.Tato diplomová práce se zabĂ˝vá analĂ˝zou a optimalizacĂ soustavy rozvádÄ›cĂ tyÄŤe bezvĹ™etenovĂ©ho rotorovĂ©ho dopřádacĂho stroje. HlavnĂm cĂlem je vytvoĹ™enĂ matematickĂ©ho modelu popisujĂcĂho dynamickĂ© chovánĂ soustavy rozvádÄ›cĂ tyÄŤe a navrĹľenĂ prvkĹŻ absorbujĂcĂch energii v ĂşvratĂch rozvádÄ›cĂho pohybu. VstupnĂ parametry duralovĂ˝ch a kompozitnĂch tyÄŤĂ byly experimentálnÄ› ověřeny a vyhodnoceny. MatematickĂ˝ model je vytvoĹ™enĂ˝ v programovĂ©m prostĹ™edĂ Pro/Engineer a na základÄ› vĂ˝sledkĹŻ z vĂ˝poÄŤtĹŻ hledá optimálnĂ naladÄ›nĂ pruĹľnĂ˝ch absorpÄŤnĂch prvkĹŻ soustavy rozvádÄ›cĂ tyÄŤe
Assessment of thermally stabilized electrospun poly(vinyl alcohol) materials as cell permeable membranes for a novel blood salvage device
The use of Intraoperative Cell Salvage (ICS) is currently limited in oncological surgeries, due to safety concerns associated with the ability of existing devices to successfully remove circulating tumour cells. In this work, we present the first stages towards the creation of an alternative platform to current cell savers, based on the extremely selective immunoaffinity membrane chromatography principle. Non-woven membranes were produced via electrospinning using poly(vinyl alcohol) (PVA), and further heat treated at 180 °C to prevent their dissolution in aqueous environments and preserve their fibrous morphology. The effects of the PVA degree of hydrolysis (DH) (98 % vs 99 %), method of electrospinning (needleless DC vs AC), and heat treatment duration (1-8 h) were investigated. All heat treated supports maintained their cytocompatibility, whilst tensile tests indicated that the 99 % hydrolysed DC electrospun mats were stronger compared to their 98 % DH counterparts. Although, and at the described conditions, AC electrospinning produced fibres with more than double the diameter compared to those from DC electrospinning, it was not chosen for subsequent experiments because it is still under development. Evidence of unimpeded passage of SY5Y neuroblastoma cells and undiluted defibrinated sheep's blood in flow-through filtration experiments confirmed the successful creation of 3D networks with minimum resistance to mass transfer and lack of non-specific cell binding to the base material, paving the way for the development of novel, highly selective ICS devices for tumour surgeries
The elaboration of educational materials for the seminar of the subject PZDM in the Clementine software environment neural networks
HlavnĂm cĂlem bakalářskĂ© práce bylo vypracovat podklady vÄŤetnÄ› konkrĂ©tnĂho pĹ™Ăkladu pro pĹ™edmÄ›t PZDM a popsat problematiku data miningu se zaměřenĂm na vyuĹľitĂ neuronovĂ˝ch sĂtĂ. PĹ™Ăklad byl zpracován v softwarovĂ©m prostĹ™edĂ Clementine a je zaměřen na predikci mĂry nezamÄ›stnanosti v okresech PardubickĂ©ho kraje.The main objective of this thesis was to elaborate materials including concrete example for the subject PZDM and describe the issues of data mining, focusing on the use of neural networks. Example was elaborated in the Clementine software environment and is focused on predicting the unemployment rate in the districts of Region Pardubice.Ăšstav systĂ©movĂ©ho inĹľenĂ˝rstvĂ a informatikyJak moc se lišilo Vaše nastavenĂ v programu Clementine od pĹŻvodnĂch hodnot? Jak se mÄ›nila pĹ™esnost, pĹ™i zmÄ›nách tÄ›chto hodnot? Student na zadanĂ© otázky uspokojivÄ› odpovÄ›dÄ›l
European integration and establishment of European monetary union
Autor se v práci zabývá vývojem evropské integrace až po vznik Evropské měnové unie v roce 1999. Dále porovnává hospodářský vývoj v EU a v USA.Dokončená práce s úspěšnou obhajobo
Comparison of competition policy of EU member states
Bachelor thesis provides overview of the most influential elements within business competition in the Czech Republic, Belgium, Netherlands, Estonia. Analytical part provides simplified point of view on business competition within chosen countries, which further applied to historical cases of Volkswagen Group and BMW Group
Utilization of magnetic accumulators for the traversing rod of the yarn winding system on rotor spinning machines
- …