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Tesis sobre el tema "Pressure in the mixer"

Autor: Grafiati

Publicado: 28 de mayo de 2022

Última modificación: 30 de julio de 2025

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1

Latimer, Sharon. "Pressure Injury Prevention and the Role of the Patient: A Mixed Methods Study." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/367363.

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Pressure injuries are acknowledged worldwide as a quality care indicator and a patient safety issue. Pressure injuries have negative impacts for patients, nurses and healthcare organisations in terms of physical and emotional distress, increased workloads and economic burden. Additionally, pressure injuries result in reduced community confidence in the healthcare system. Internationally and in Australia, pressure injury prevalence rates are concerning, with sustained reductions difficult to achieve despite the availability of prevention resources. International clinical practice guidelines rec

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2

Dunn, Matthew Thomas. "Design of a mixing unit for oil-in-water emulsions for hydraulic systems in underground mining." Thesis, Queensland University of Technology, 1997. https://eprints.qut.edu.au/36016/1/36016_Dunn_1997.pdf.

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The thesis details the design, development and implementation of a proportional mixer unit to mix emulsions in longwall mining applications. The principal aim of this thesis was to reduce the maintenance costs, down-time, and loss of production due to failure of the hydraulic roof support system in longwall mining. Improved operation can be achieved by increasing the control and reliability of the hydraulic fluid system. The present state of technology was reviewed in the metering and mixing systems such as: gear pumps and gear motors, venturi type, proportioning piston and metering pum

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3

Naber, Logan A. "High Pressure Ratio Compressor Performance Design and Optimization." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1626357000628287.

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4

Onal, Mehmet Ali Recai. "Pressure Leaching Of Caldag Lateritic Nickel Ore." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615480/index.pdf.

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The purpose of this study was to investigate the process optimization of combined high pressure acid leaching (HPAL) and mixed hydroxide precipitation (MHP) route for the extraction of nickel and cobalt from &Ccedil<br>aldag lateritic nickel ore. In order to extract nickel and cobalt values into pregnant leach solution (PLS), several process parameters of HPAL including acid load, temperature, leaching duration and particle size were investigated in comparative manner at constant solid concentration and agitation speed. After HPAL trials, it has been found that more than one combination of par

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5

Secen, Berk. "Pressure Leaching Of Sivrihisar-yunus Emre Nickel Laterites." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613437/index.pdf.

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The aim of this thesis study was to extract nickel and cobalt from Sivrihisar limonitic nickel laterite ore by high pressure acid leaching (HPAL) method under most economical operating parameters. Optimizing the conditions to yield a saleable quality mixed hydroxide product from the pregnant leach solution (PLS) was also investigated. To extract high amounts of nickel and cobalt from the laterite matrix<br>leaching duration, leaching temperature and sulfuric acid/ore ratio were studied at fixed conditions of -850 &micro<br>limonitic ore particle size and 40% solids concentration. The Sivrihis

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6

Takeiri, Fumitaka. "Topochemical and High-Pressure Routes to Synthesize Transition-Metal Mixed Anion Oxides." Kyoto University, 2017. http://hdl.handle.net/2433/228237.

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7

Akizuki, Yasuhide. "High-Pressure Synthesis and Properties of Novel Perovskite Oxides." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199319.

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8

Joo, Jong-Hoon, Rotraut Merkle, Joachim Maier, et al. "XPS on mixed conducting perovskites at elevated temperatures and close-to-ambient gas pressure." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-187968.

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9

Joo, Jong-Hoon, Rotraut Merkle, Joachim Maier, et al. "XPS on mixed conducting perovskites at elevated temperatures and close-to-ambient gas pressure." Diffusion fundamentals 12 (2010) 67, 2010. https://ul.qucosa.de/id/qucosa%3A13897.

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10

Pavlíček, David. "CFD modelování mísení kapalin v potrubí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-387733.

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This work is focused on computational modelling of mixing fluids in pipeline with static mixers. Main objective is to analyze several selected static mixers in a particular industrial application, namely dosing of the aluminium sulphate solution in the clarification process for potable water treatment. The analysis focuses on the degree of mixedness and pressure loss of individual mixers. Further, the aim of this work is to process the search of available types of static mixers. The benefit of this work is at least an effort to motivate the reader to deeper understanding of the mixing fluids,

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11

Goodenow, Debra A. B. S. "Characterization of Effects of Mixed Neutron/Gamma Irradiation on NASA Glenn SiC Piezoresistive Pressure Sensors." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1205356120.

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12

Yang, Minghui. "Synthesis and physical properties study on mixed metal oxynitrides." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4615.

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Mixed metal oxynitrides have attracted attention due to their interesting chemical and physical properties in the past twenty years. In this thesis, four series of mixed metal oxynitrides have been investigated. The samples have been synthesized by both thermal ammonolysis and high pressure high temperature methods. The structural exploration covers perovskite, scheelite and pyrochlore types. The structural studies were carried out using powder X-ray and neutron diffraction, and magnetic and conducting properties have been explored. A series of new RZrO2N (R = Pr, Nd and Sm) perovskites were s

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13

Zhou, Dong. "High-order numerical methods for pressure Poisson equation reformulations of the incompressible Navier-Stokes equations." Diss., Temple University Libraries, 2014. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/295839.

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Mathematics<br>Ph.D.<br>Projection methods for the incompressible Navier-Stokes equations (NSE) are efficient, but introduce numerical boundary layers and have limited temporal accuracy due to their fractional step nature. The Pressure Poisson Equation (PPE) reformulations represent a class of methods that replace the incompressibility constraint by a Poisson equation for the pressure, with a suitable choice of the boundary condition so that the incompressibility is maintained. PPE reformulations of the NSE have important advantages: the pressure is no longer implicitly coupled to the velocity

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14

Uyanik, Ahmet. "An investigation into the preparation, high-pressure behaviour, and stability of pre-mixed volatile liquid anaesthetics in entonox." Thesis, University of Aberdeen, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294144.

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In this study the solvent power of Entonox, which has not been studied before, was explored at 67, 81 and 101 bar pressures to realise pre-mixed cylinder mixtures of volatile liquid anaesthetics in Entonox. The enhancement effect due to the pressure in Entonox at 101 bar was found remarkable (halothane, 157%; isoflurane, 206%; enflurane 172%;) and sufficient to provide clinically useful gas-phase concentrations for the volatile anaesthetics, higher than their MAC (minimum anaesthetic concentration) values. The concentration stability of the mixtures, under the conditions studied, showed that t

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15

Cong, Peng. "WIRELESS BATTERYLESS IN VIVO BLOOD PRESSURE SENSING MICROSYSTEM FOR SMALL LABORATORY ANIMAL REAL-TIME MONITORING." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1228412139.

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16

Al-Defai, Nidhal. "The consequences of the dewatering of freshly-mixed wet mortars by the capillary suction of brick masonry." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/the-consequences-of-the-dewatering-of-freshlymixed-wet-mortars-by-the-capillary-suction-of-brick-masonry(01374525-5432-445a-a6b3-7833a5fb994d).html.

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The main water transport properties of clay brick are critically examined in respect of suction and water content. An experimental investigation is carried out to compare the sorptivity and vacuum saturation porosity with suction and “porosity” tests in the standards. The water retaining ability (desorptivity) of freshly mixed hydraulic lime and cement mortars is examined and the effect of hydraulicity, pozzolanic and non-pozzolanic additive materials, binder particle size and the chemistry of mix water on the water retentivity of these mortars are investigated. The inter-relationship of subst

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17

Hadžalić, Emina. "Analysis of pore pressure influence on failure mechanisms in structural systems." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2502.

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Cette thèse porte sur la sécurité globale des structures en matériaux hétérogènes saturés soumis à des charges extrêmes, et est appliquée à des problèmes d’interaction fluide-structure, tels que l’interaction barrage-réservoir. Un modèle numérique d’interaction est proposé pour prédire les principales tendances et le comportement général d’un barrage en matériau saturé en interaction avec le réservoir dans des analyses de défaillance d’intérêt pratique. Le modèle numérique proposé est d’abord présenté dans un cadre bidimensionnel (2D), puis étendu à un cadre tridimensionnel (3D). La structure

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18

Conradi, Justus, and Patrik Tiainen. "Automated water mixer." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264447.

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The aim for this thesis is to explore the possibility to save both water and energy in showers. Through a quicker, more responsive and precise shower faucet using digital thermometers and stepper motors. A faucet has two input pipes with cold and hot water respectively. To reach a desired shower temperature; a single thermometer is needed, to measure the mixed water temperature. Using this information, two motors will control two valve until the desired temperature is reached. To maintain the desired temperature throughout the shower session, the temperature should be continuously monitored an

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19

Jacobson, Brian Ratcliff. "A micromachined SIS mixer." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/12026.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.<br>Includes bibliographical references (p. 158-160).<br>by Brian Ratcliff Jacobson.<br>M.S.

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20

Becker, Per Julian. "Coupling of population balance modeling and computational fluid dynamics applied to turbulent emulsification processes in complex geometries." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10154/document.

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La modélisation des phénomènes de brisure de gouttes lors d’opérations d’émulsification par bilan de population (PBE), a pour but de suivre l’évolution de la distribution des tailles de gouttes (DSD). Ceci a fait l’objet d’un grand nombre d’études au cours des deux dernières décennies. Une approche multiéchelle, couplant la modélisation des phénomènes de brisure à l’échelle d’une goutte avec les phénomènes agissant à l’échelle du champ d’écoulement est nécessaire pour simuler correctement les procédés d’ émulsification dans des géométries complexes tels que des mélangeurs statiques ou des homo

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21

Makiya, George Kidakwa. "A Multi-Level Investigation into the Antecedents of Enterprise Architecture (EA) Assimilation in the U.S. Federal Government: A Longitudinal Mixed Methods Research Study." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1338942189.

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22

Van, der Merwe Marius. "Harmonic mixer analysis and design." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52872.

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Thesis (MScEng) -- Stellenbosch University, 2002.<br>Some digitised pages may appear illegible due to the condition of the original hard copy.<br>ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra also have certain characteristics that make them ideal for a variety of applications. The operation of the harmonic mixer is investigated, and the mixer is analyzed using an extension of the classic mixer theory. The synthesis of

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23

Murison, Julie Lynette. "Wetting heterogeneities in porous media." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://hdl.handle.net/11858/00-1735-0000-0022-5E9C-2.

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24

Cheung, Dickson Tak Shun. "A 5.5GHz current-biased diode mixer." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ45606.pdf.

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25

Fung, Andrew Kang. "Modeling of mixer-ejector nozzle flows." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11824.

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26

Cheng, Jing-Jy. "Flow simulations in a Banbury mixer." Case Western Reserve University School of Graduate Studies / OhioLINK, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=case1054584225.

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27

Jacobsson, Trond. "Technical upgrade of an audio-mixer control." Thesis, Linköping University, Department of Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7424.

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<p>Today the Sjöbjörn studio has a mixing console controlled by a PC with outdated software and</p><p>hardware technology. The hardware requires an ISA-bus to work at all and thereby limits the</p><p>upgrades that can be made to the computer. The software runs in a DOS environment and has not</p><p>been updated for a long time as well. This makes working with the mixing console more difficult</p><p>then it has to be and new features are hard to implement. In this thesis I have developed new</p><p>hardware so that a more powerful computer can be used which hopefully will allow for a more</p><p>

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28

Liu, Shiping Hrymak A. N. "Laminar mixing in an SMX static mixer." *McMaster only, 2005.

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29

Chen, Li-Fang, and 陳儷方. "Vapor Pressure of Mixed-Solvent Desiccants." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/6n7v43.

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碩士<br>中原大學<br>化學工程研究所<br>91<br>The vapor pressures of salt/organic solvent/water systems were measured at temperatures from 30 to 70℃ by a static method. The salts studied are LiCl, LiBr and CaCl2. The mixed-solvents are Diethylene glycol (DEG)/H2O, tetra-ethylene (glycol) TeEG/H2O and di-propylene glycol (DPG)/H2O. The corresponding densities of the solutions were also measured. The Antoine equation and Mean Spherical Approximation have been applied to correlate the measured data. In the Mean Spherical Approximation, the so-called “pseudo-solvent method” was applied to represent the mixed-sol

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30

Левицький, Богдан Богданович, та Bohdan Levytskyi. "Обґрунтування параметрів спеціальних тримких елементів рами причіпного обприскувача". Master's thesis, 2021. http://elartu.tntu.edu.ua/handle/lib/35175.

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Мета і завдання дослідження – провести обґрунтування параметрів спеціальних тримких елементів рами причіпного обприскувача, які є спеціальними монтажними місцями додаткових пристроїв для модифікації обприскувача. Для досягнення мети дослідження було поставлено та вирішено такі завдання: – виконано аналіз конструкцій робочих органів оприскувачів; – обґрунтування Конструктивно-технологічні параметри обприскувача з комп’ютерною системою управління технологічним процесом; – розраховано зварні з’єднання в елементах кріплення керуючої апаратури; – обґрунтовано параметри кронштейна для кріпле

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31

徐子昇. "PVT Properties of PPG with Mixed Solvent at Elevated Pressure." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/42572299393064562347.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>88<br>Abstract PVT data have been measured for mixtures composed of PPG-4000, 1-octanol, and acetophenone with a high-pressure densimeter in a temperature range of 298.15 K to 348.15 K and at pressures up to 50 MPa. The variations of densities and excess volumes with composition, temperature, and pressure were investigated. The excess volumes are positive over entire composition range for 1-octanol+acetophenone,while those change from negative to positive with increasing the mole fraction of polymer cut for the two polymer solution systems.

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32

Huang, Ya-Ping, and 黃雅萍. "Analysis of Repeated Measurements of Blood Pressure with Linear Mixed Model." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/74481767035577032008.

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碩士<br>國立臺灣大學<br>流行病學與預防醫學研究所<br>99<br>Purpose:Hypertension has been recognized as a major risk factor for stroke and cardiovascular disease. Its prevention becomes the core subject of public health, particularly life-style modification offered for patients with pre-hypertension pursuant to JNC7 guideline in order to reduce the incidence of hypertension. Very few studies revealed the dynamic change of blood pressure from normal status to hypertension based on longitudinal repeated measurements of blood pressure. Therefore, we aimed to assess the risk factors responsible for the changes of blood

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33

Lin, Yan Huai, and 林彥懷. "Convective Heat Transfer of Mixed Electroosmotic and Pressure-Driven Flow in Microchannels." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/zf9354.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>98<br>This study is aimed to treat the problem of convective heat transfer introduced by combined electrokinetic and pressure forces in microchannels. Analytical solution are presented for a slit microchannel with constant surface temperature, taking into account the effect of joule heating and viscous dissipation for different Peclet number. First , the Poisson-Boltzmann equation is solved to obtain the electrokinetic potential. Next, the fluid velocity distribution across the channel is determined form the momentum equation. Finally, we solve the energy equati

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34

LIU, KAI-YING, and 劉凱盈. "The Influence of Velocity Slip in Mixed Electro-Osmotic and Pressure Driven Microflows." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/459684.

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碩士<br>國立虎尾科技大學<br>機械設計工程系碩士班<br>106<br>This paper mainly discusses the effect of pressure and electroosmosis fluid driving on the heat transfer between flat plates. The main purpose is to discuss the effect of velocity slip on the micro-heat flow of Newtonian fluids subjected to mixed electro-osmotic and pressure-driven flow in parallel plate microchannels. We give different values for dimensionless Joule heating parameters (ratio of Joule heating to surface heat flux), dimensionless pressure gradient, the ratio of half channel width to Debye-length, and dimensionless velocity slip. In this s

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35

linkunshen and 林坤昇. "Study on boundary velocity slip and temperature jump effects in mixed electroosmotic / pressure driven microflows." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/77363439443887648701.

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碩士<br>國立中興大學<br>應用數學系<br>93<br>Abstract Main of this study used continuity equation, modified Navier-Stokes equation, Poisson equation and energy equation to analyze the fluid mobility, heat transfer mobility when microtube at different driven angular momentum frequency and several system variables by the coupling of electroosmotic flow and pressure field with velocity slip and temperature jump boundary conditionds near the wall. The results show that, when increasing pressure gradient, Brinkman and Joule heating physical properties that non-dimensional velocity distribution, unit flow rate, f

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36

Yu-AnChen and 陳昱安. "Material and Optical characteristics multi-dimensional mixed perovskite by Low pressure Vapor-Assisted Solution Process." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/utvf8s.

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Subramanya, H. Y. "Numerical Studies On Ductile Fracture Of Pressure Sensitive Plastic Solids." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/734.

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Experimental studies have shown that the yield strength of many important engineering materials such as polymers, ceramics and metallic glasses is dependent on hydrostatic stress. In addition, these materials may also exhibit plastic dilatancy. These deviations from the assumptions of classical plasticity theories have also been observed for some metallic alloys, although to a lesser extent compared to non-metals. In pressure independent plastic solids, it has been found that the level of crack tip constraint can affect the near-tip stress and deformation fields and hence the fracture resistan

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38

Subramanya, H. Y. "Numerical Studies On Ductile Fracture Of Pressure Sensitive Plastic Solids." Thesis, 2008. http://hdl.handle.net/2005/734.

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Experimental studies have shown that the yield strength of many important engineering materials such as polymers, ceramics and metallic glasses is dependent on hydrostatic stress. In addition, these materials may also exhibit plastic dilatancy. These deviations from the assumptions of classical plasticity theories have also been observed for some metallic alloys, although to a lesser extent compared to non-metals. In pressure independent plastic solids, it has been found that the level of crack tip constraint can affect the near-tip stress and deformation fields and hence the fracture resistan

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39

Cantu, Karla Irasema. "Performance and pressure : a mixed methodological study on the coping and managing of community college CEOs." Thesis, 2014. http://hdl.handle.net/2152/30495.

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Coping with stress is essential for a CEO to remain effective as a leader of a community college. The mastery of self-development techniques for CEOs, visualization techniques for CEOs, and techniques which teach the CEOs to master Building Allies are essential tools for CEOs to provide vision and direction for community college. In the mid-1990s, California was going through an economic crisis. The tax base was significantly reduced resulting in the reduction of allocated funds for the local communities. The reduction of public funds limited the availability of social and health services, and

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40

Lai, Jui-Ming, and 賴瑞明. "The Study of effecting Biodiesel Mixed Fuel on Fuel Injection Pressure in a DI Diesel Engine（I）." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/26486226363855771715.

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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>92<br>In order to extend the using life of the Premium diesel and reducing the exhaust pollution of the Diesel Engine, this study added bio-diesel into kerosene as the mixed fuel to replace the Premium diesel. Although it had more fuel consumption, about 0.1% than Premium diesel, it could decrease the concentration of Smoke and NOx to 19% and 8%. If we lower the pressure of the fuel injection, it could decrease the fuel consumption and reduce Smoke concentration to original fuel injection pressure about 0.5% and 11%, but it could increase the NOx and HC exhaust de

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41

I-ChunLin and 林怡君. "Effects of Temperature and Pressure on De-/Re-hydrogenation Behavior of Lithium Alanate mixed with Magnesium Hydride." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8nhwwa.

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碩士<br>國立成功大學<br>材料科學及工程學系<br>105<br>Rehydrogenation behavior of the discharged MgH2-LiAlH4 composites was investigated by using thermal gravimetric analysis (TGA) and in situ synchrotron X-ray diffraction (XRD) technique. For 4MgH2-LiAlH4 composite, the experimental results showed that at least 3 wt% of hydrogen could be recharged during rising pressure to 3.1MPa/H2 at 400 °C to form MgH2 after its first dehydrogenation reaction. The faster hydrogen absorption rate 0.065 wt%/min happened between 0.17 MPa ~ 1.38 MPa. The XRD results indicated that it would have different absorption reaction in

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42

Saunion, Roland. "Optimization of a multi-level steam distribution system by mixed integer non-linear programming." Thesis, 2001. http://hdl.handle.net/10413/5899.

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The objective of this project is to optimize the SAPREF oil refinery steam distribution in which imbalances between the various levels presently require the venting of steam from the lowest level. The overall steam balance shows that the problem originates from an excess of high·pressure (HP) steam production for too few medium pressure steam users and turbines. We proposed to solve this problem by considering the replacement of selected steam turbines with electrical drives. Given a set of demands of electricity, mechanical power and steam at various pressure levels, the objective is to recom

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Englezos, Peter, Serge Desgreniers, John A. Ripmeester, Dennis Klug, and Robin Susilo. "RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL." 2008. http://hdl.handle.net/2429/1025.

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It is well known that methane hydrate undergoes several phase transformations at high pressures. At room temperature and low to moderate pressure, methane and water form a stable cubic structure I (sI) hydrate that is also known as MH-I. The structure is transformed to a hexagonal phase (sH/MH-II) above 1.0GPa. Another phase transformation occurs above 1.9GPa where the filled ice structure (MH-III) is stable up to 40 GPa before a new high pressure phase transition occurs. Experiments at such high pressures have to be performed in a diamond anvil cell (DAC). Our main interest, though, is

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Wang, Yu-Ting, and 王郁婷. "The Relationship among Teaching Pressure, Physical Activity Levels and Quality of Life for Preschool Teachers of Mixed-age Classes." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/77hs6c.

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碩士<br>國立臺北教育大學<br>幼兒與家庭教育學系碩士在職專班<br>107<br>The purpose of this project is to explore the connections between the pressure on Taipei City Public Preschool Teachers teachers resulting from mixed-age classes and childcare (hunling jiaobao), physical activity, and quality of life. Through this research, I hope to reveal the effect of educational and childcare pressure on preschool teachers’ health and lives. Based on the results of my research, I make suitable proposals for policy adjustments. This project will cause more people to understand and confront the work and hardships of educational ser

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Hsiao, Hsing-Chang, and 蕭興前. "The Study of Effecting Biodiesel Mixed Fuel on Inject Pressure in a DI Diesel Engine (Ⅱ) ─ Biodiesel＋Kerosene+Premium Diesel ─." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/52155386523326645520.

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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>92<br>In order to extend the using life of the Premium diesel and reducing the exhaust pollution of the Diesel Engine, this study added bio-diesel into kerosene and Premium diesel as the mixed fuel to replace the Premium diesel. Although it had more fuel consumption, about 1.1% than Premium diesel, it could decrease the concentration of Smoke and NOx to 12.3% and 2.6%. If we lower the pressure of the fuel injection, it could decrease the fuel consumption ,Smoke and HC concentration to original fuel injection pressure about 1.3%,15.2% and 12.7%, but it could increa

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Yu, Ching-Long, and 余進龍. "The Study of effecting Premium Diesel Mixed Fuel on FuelInjection Pressure in a DI Diesel Engine（III）─ Premium Diesel＋Kerosene ─." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/04115519863473269434.

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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>92<br>Although the mixed fuel, adding kerosene into Premium Diesel would lightly increase the concentration of the NOx, it could decrease the fuel consumption and the smoke concentration. If we lower or higher the pressure of the fuel injection in the fuel system of the diesel engine, it could increase the fuel consumption and the concentration of the NOx, while the concentration of the smoke would decrease. And when we higher the pressure of the fuel injection, it would decrease the concentration of the NOx, but the reverse would increase. In the result, by using

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Chen, Wang-Chih, and 陳旺枝. "The Study of effecting Soybean Oil Mixed Fuel on Fuel Injection Pressure in a DI Diesel Engine（I） ─ Soybean Oil＋Kerosene ─." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/53852526670653029085.

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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>92<br>In order to increase the using time-limit of premium diesel fuel and reduce environmental pollution of exhaust gas emission from a DI Diesel engine , one way is to use Kerosene added with soybean oil as alternative fuel on Diesel engine .It has a lower fuel consumption than that of premium diesel fuel by 0.3% , also reduces about 35% exhaust gas emission concentration . However , it may make NOx increase by 6% in exhaust gas emission . In the case of reducing the fuel injection pressure , the fuel consumption is lower than that of the original operating pres

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Lin, Shaw Guann, and 林劭冠. "K-Band Downconverter Mixer and Ku-Band Upconverter Mixer." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/47403052434223734432.

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碩士<br>國立交通大學<br>電信工程研究所<br>84<br>In this project, designed, a K-band downconverter mixer and a Ku-bandupconverter mixer are fabricated and measured. We chose a five port ring hybridmixer structure for downconverter, and we added an image rejection filter infront of this mixer to prevent the image frequency to degrade the IF signal.This five port ring hybrid mixer can solve the problem of complex structure ofairbridge or crossing transmission lines when using the rat- race structure, andit i

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Yang, Chih-Hao, and 楊智皓. "UWB Subharmonic Quadrature-IF Mixer and Image Rejection Mixer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/20782607708265325630.

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碩士<br>國立交通大學<br>電信工程系所<br>96<br>The UWB system is receiving growing attention as an important communication system for wireless communication. The characteristics of UWB system are the ultra wide bandwidth and its high data rate transmission. In order to obtain a better performance of the UWB system, an UWB mixer with the function of rejecting image signal is needed. An ultra broadband directional coupler is the most important element of the UWB mixer due to the large bandwidth. In first part of this thesis, we will utilize multisection structure to perform an UWB coupler. The most tightly co

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Hsueh, Ting-You, and 薛廷佑. "Design and Implementation of Hybrid Mixer and COMS Mixer." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/36540586869945529211.

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碩士<br>樹德科技大學<br>電腦與通訊研究所<br>95<br>This thesis includes two subjects, which are 2.4GHz down-conversion hybrid mixer and microwave CMOS integrated mixer. In the 2.4GHz down-conversion hybrid mixer, the circuit comprises Wilkinson power divider and a low noise amplifier (LNA) using self bias BJT design. The active hybrid mixer performs superior characteristics including 6dB conversion gain, 35.1dB LO-RF isolation and 27.28dB LO-IF isolation. The proposed microwave CMOS integrated mixer was realized using TSMC 0.18μm 1P6M CMOS process. The 5GHz mixer designed for 802.11a WLAN application is charac

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