304 research outputs found
Analysis of handling equipment in the company Honeywell, spol. s r.o. - Brno o.z.
No full textPráce se zabývá manipulačními prostředky ve společnosti Honeywell, spol. s r.o. - Brno o.z. Nejprve autor analyzuje stávající stav systémů. Na základě zkušeností ve vybrané firmě autor navrhuje zlepšení daných systémů, a to nízkozdvižný vozík, přípojný vozík za milk run a návrh nových tras.This thesis deals with the handling equipment in the company Honeywell, spol. s r.o. Brno o.z. First of all, the author analyzes the current state of the systems. Based on his own experience in the selected company, the author proposes improvements of the given systems, such as for example a pallet truck, a milk-run cart for and the draft of new routes.Dopravní fakulta Jana PerneraStudent úspěšně obhájil bakalářskou práci a zodpověděl otázky kladené státní zkušební komisí.
Student vhodně využil znalostí získaných v rámci odborné praxe a následně brigády ve firmě.Dokončená práce s úspěšnou obhajobo
Construction management in the company Remin, spol. s r.o.
No full textDiplomová práce se zabývá prací technického dozoru na konkrétním developerském projektu 5 bytových domů, který v době tvorby práce vzniká v pražské Libni. V teoretické části je vysvětlena problematika dodavatelských systémů, dále jsou zde podrobně rozebrány funkce týkající se dozorování staveb v České republice. Praktická část je na teoretický rámec práce navázána. Je zde představena společnost Remin spol. s r.o. Jedním z hlavních odvětví, kterou se společnost zabývá je činnost technického dozoru. Následně je představen projekt Marina Boulevard, na kterém se autor práce podílí jako zástupce společnosti Remin spol. s r.o. v roli technického dozoru. Další kapitoly jsou již věnované samotnému projektu a zabývají se mimo jiné chybami nebo nestandardními řešeními, ke kterým došlo v průběhu dosavadní realizace projektu. Poslední kapitoly jsou věnovány časovému plánování a finanční stránce projektu.The content of this diploma thesis is the work of technical surveillance on a specific developer project of five residential houses, which was built at the same time like this diploma thesis. It´s grow up in Prague quarter Libeň. The theoretical part explains the issue of delivery methods and contains various types of technical surveillance in the Czech Republic and their differences as well. Practical part continues with the framework of work like in theoretical part. The company Remin spol. s r.o. is introduced in this part. One of the main business areas of the company is technical supervision. Subsequently the project Marina Boulevard is introduced. This project involves the author of the thesis as technical surveillance as a representative of the Remin company. Other chapters are already devoted to the project itself and it deals with mistakes or non-traditional solutions that occurred during the realization of the project. The last chapter is devoted to the financial and time aspect of the project
Project of formulating and implementing new vision, targets and strategy in the company Scania Finance CZ, spol. s r.o. - organizačná zložka Slovakia
No full textPráce přibližuje podstatu leasingu, z různých hledisek posuzuje poslání, vizi, strategický záměr a strategické cíle podniku. Představuje leasingovou společnost Scania Finance CZ, spol. s r.o. – orgnizačná zložka Slovakia, podrobně analyzuje její současný stav, externí i interní prostředí, v rámci kterého zvláštní pozornost věnuje jejím hlavním konkurentům. Výsledky analýzy, včetně vlastního výzkumu, formuluje ve zpracovaném projektu, prezentujícím novou vizi, cíle a strategii uvedené společnosti.The present work explains the essence of leasing purchase. It also examines, from different points of view, a company’s mission, vision and strategy. The leasing company Scania Finance CZ, spol. S r.o. – organizačná zložka Slovakia is presented here. Its current situation as well as its internal and external environment – focusing on the company’s principal competitors – are analysed in detail. The results of the analysis and of the author’s own research are formulated in the elaborated project which presents a new vision, new objectives and strategy of the stated company.Ústav management
Thermodynamic analysis of solar-based photocatalytic hydrogen sulphide dissociation for hydrogen production
No full textThe dissociation of gaseous hydrogen sulphide (H2S) into its components is an energy intensive process. The process is studied in this paper with respect to the thermodynamic limits. The band gap of the catalyst and the nature of the solar radiation limit the proportion of incoming radiation that may be used for the reaction. The intensity of the incoming radiation and the reactor temperature are varied and the performance is studied. The exergy efficiency is determined as a function of the quantum efficiency of the photochemical process, and the catalyst band gap. It is shown that an optimum case exergy efficiency of up to 28% can be achieved for the process. With the current status of technology, an exergy efficiency value in the region of 0.4–1% is calculated, with a short-term improvement potential of up to 10%. Hydrogen sulfide has high energy content, but is not widely used due to its impact on environmental pollution. The proposed process in this paper is attractive as it allows that energy to be utilized, while degrading the highly toxic gas into less harmful products
Recovery of magnesium from RO concentrate for struvite production
No full textMagnesium is one of the most critical natural resources and 96% of magnesium used in Europe is imported. The present study investigated possible ways of implementing circularity in the magnesium cycle within the borders of Waternet, a water utility in the Netherlands. The wastewater treatment plant at Amsterdam-West produces struvite from anaerobic digestate. The production of struvite requires 4400 tons of 32% MgCl2 annually. At the same time, a reverse osmosis (R.O.) process treating brackish groundwater for drinking water production produces a concentrate rich in magnesium ions. This R.O. concentrate, after being treated by aeration and filtration to remove iron and ammonium, is considered for use in the wastewater struvite recovery process. Technologies for recovering magnesium from this R.O. concentrate were investigated in this study. After analyzing the constraints of the magnesium dosing system, the struvite reactor, and the R.O. concentrate composition, two technologies were selected for the study of Mg2+ recovery: Nano-filtration (N.F.) and Ion exchange. The present study investigated both these processes via software simulations and laboratory experiments. The study revealed that while the N.F. process is not viable, the cation exchange using a weak chelating resin AmberLite IRC747 in Na+ form (regeneration with H2SO4 and NaOH) is possible when the resin is saturated with divalent cations. The regenerant stream (produced via acid regeneration) is a sodium-free stream having gypsum precipitates. After gypsum separation, the process created an Mg2+ dose with a concentration of 4.45 g/l. This study developed a 1 step process for extracting Mg2+ from RO concentrate.Civil Engineering | Environmental Engineerin
Project of productivity increase by using industrial engineering methodology in Walker Pilana Magnetics spol. s r.o. company
No full textDiplomová práce se zabývá tématem zvýšení produktivity prostřednictvím metod průmyslového inženýrství (PI) ve společnosti Walker Pilana Magnetics spol. s r.o. Hlavním cílem této práce je vytvořit projekt zvýšení produktivity se zaměřením na údržbu a obnovu strojového parku. V teoretické části autor stručně představil obor průmyslového inženýrství a vybrané metody PI. Analytická část popisuje současný stav výrobního zařízení, materiálové toky, systém údržby a celkový stav na pracovištích z pohledu pořádku, vizualizace a údržby. Následuje projektové řešení, jehož hlavním obsahem je projekt zavedení totálně produktivní údržby na pilotním pracovišti. Dále je projektové řešení doplněno o návrh nákupu nového stroje a aktualizaci technologického postupu. Diplomová práce končí závěrečným zhodnocením z pohledu zvýšení produktivity navrhnutých řešení.This Master Thesis deals with productivity increasing by the medium of industrial engineering (IE) in the company Walker Pilana Magnetics spol. s r.o The main aim of thesis is to create a project of productivity increasing with a view to maintenance and renewals of enginery. In the theoretical part the author shortly presents field of industrial engineering and its selected method. An analytical part describes present degree of manufacturing equipment, materials flows, servicing system and general workplace degree with the view of tidiness, visualization and current maintenance. The thesis follows by a project solution, which basic content is to partly implement totally productive repairs in the pilot work place. Project solution is farther completed by a proposal of a new machine purchase and technological project updating. The diploma thesis ends with closing evaluation with view of productivity increasing of the suggest solutions.Ústav průmyslového inženýrství a informačních systémůobhájen
Thermal vacancies in HCP helium-4
No full textActivation energies of thermal vacancies have been determined in hcp \sp4He as a function of molar volume. A sensitive strain gauge was used to measure the temperature dependence of the pressure in twenty crystals between 18.17 and 20.9 cm\sp3/mole. Absolute lattice parameters at low temperatures were measured for many of these crystals. The temperature dependence of the relative lattice parameter was measured in selected crystals. This provided lower bounds on the vacancy activation energy.The activation energies determined here agree at all reported molar volumes with those from previous measurements of pressure in hcp \sp4He. The lower bounds on the activation energies from the relative lattice parameter measurements are consistent with those determined from the pressure. Below 20 cm\sp3/mole the activation energies reported here are in disagreement with those from ion mobility, NMR, and plastic deformation experiments. The determination of vacancy activation energies from the measured pressure requires knowledge of the phonon pressure. Difficulties with the present understanding of the phonon pressure are discussed.Made available in DSpace on 2011-05-07T14:25:19Z (GMT). No. of bitstreams: 2
license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5)
9124500.pdf: 5502854 bytes, checksum: b1fb5958d00316f576197e07092f93f8 (MD5)
Previous issue date: 1991Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding ([email protected]) on 2011-05-07T15:06:31Z
Item is restricted indefinitely.Restriction data tranferred 2014-07-01T11:31:57-05:00
Original Data
Group with Access UIUC Users [automated]
Release Date: none
Reason: ETDs are only available to UIUC Users without author permissionETDs are only available to UIUC Users without author permissionU of I Onl
On The Relationship Between Idea-Quantity and Idea-Quality During Ideation
No full textA great deal of research has been conducted to develop methods and techniques to improve group ideation. Most of this research focuses on techniques for increasing the quantity of ideas generated during ideation; less attention has been given to the quality of the ideas produced. This focus stems from the widely held quantity–quality conjecture, that, all else being equal, more ideas give rise to more good ideas. In this paper, we argue that cognitive inertia and scarcity of solution space may affect the relationship between idea-quantity and idea-quality as ideation proceeds, resulting in a condition of diminishing returns for additional ideas. Results of a laboratory study using fourteen groups supported the diminishing returns hypothesis. Recommendations for future ideation research are suggested.Systems EngineeringTechnology, Policy and Managemen
Scale up of surfactant alternating gas foam processes
No full textFoam increases sweep efficiency during gas injection in enhanced oil recovery (EOR)processes by reducing gas mobility. In fact, foam is the only EOR technology that isable to fight against both gravity segregation and geological heterogeneity. Surfactant Alternating Gas, or SAG, is the preferred method to place foam into the reservoir for both operational and injectivity reasons. For example, this method of injection avoids the difficulties of having foam in the injection lines. Injecting foam in this manner also offers better injectivity than in foam-injection processes in which pregenerated foam is injected into the reservoir
Experimental investigation of a solar tower based photocatalytic hydrogen production system
No full textIn this paper, production of hydrogen from concentrated solar radiation is examined by a laboratory scale solar tower system that is capable of handling continuous flow photocatalysis. The system is built and studied under a solar simulator with an aiming area of 20 × 20 cm2. The fraction of solar spectrum useful for water splitting depends on the energy band gap of the selected photocatalyst. Two types of nano-particulate photocatalysts are used in this work: ZnS (3.6 eV) and CdS (2.4 eV). The effect of light concentration on photocatalysis performance is studied using Alfa Aesar 99.99% pure grade, 325 mesh ZnS nano-particles. An improved quantum efficiency of 73% is obtained as compared to 45% with the same sample under non-concentrated light in a previous study. Only 1.1% of the energy of the solar radiation spectrum can be used by ZnS catalyst. A mixture of CdS and ZnS nano-particulate photocatalysts (both Alfa Aesar 99.99% pure grade, 325 mesh) is used to conduct a parametric study for a wider spectrum capture corresponding to 18% of the incident energy. Hydrogen production increases from 0.1 mmol/h to 0.21 mmol/h when the operating conditions are varied from 25 °C and 101 kPa to 40 °C and 21 kPa absolute pressures. Furthermore, the implementation of a continuous flow process results in an improvement in the energy efficiency by a factor of 5.5 over the batch process
- …
