Log in

Relevant bibliographies by topics / Oxygen partial pressure / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Oxygen partial pressure.

Dissertations / Theses on the topic 'Oxygen partial pressure'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 42 dissertations / theses for your research on the topic 'Oxygen partial pressure.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Ni, X. W. "Oxygen partial pressure fluctuations in a fluidized bed combustor." Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373860.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Schenkman, Kenneth Aron. "Determination of myocardial intracellular oxygen partial pressure by optical spectroscopy /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/8002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Benammar, Mohieddine. "Development of instrumentation incorporating solid state gas sensors for measurement of oxygen partial pressure." Thesis, Middlesex University, 1991. http://eprints.mdx.ac.uk/6532/.

Full text

Abstract:

Electronic instrumentation was developed for the measurement of the oxygen partial pressure, P1, in a sample gas using fully-sealed zirconia pump-gauge oxygen sensors operated in an AC mode. These sensors, operated typically at 700°C, consisted of two discs of zirconia with porous platinum electrodes on each face separated by a gold seal and enclosing a small internal volume. One disc was operated as a pump enabling oxygen to be electrochemically transferred into and out of the enclosed volume; the other disc operated as a gauge, the Nernst EMF across the electrodes providing a measure of the

APA, Harvard, Vancouver, ISO, and other styles

4

Hessling, Oscar. "Influence of Oxygen Partial Pressure on the Droplet Shape of Stainless Steel Using Levitated Droplet Method." Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199668.

Full text

Abstract:

An induction setup for levitation studies of molten metals was built. The setup was used to levitate and heat stainless steel samples of 2.00 g to 1600 °C and subject them to different atmospheres. Changes in shape and temperature were recorded by video and infrared thermocouple. Oxide films forming on the droplets during levitation were observed. It was possible to notice an immediate surface reaction when the reaction gas was introduced. This reaction is concluded to influence the surface and bulk composition, and therefore have an effect on the shape evolution of the droplet. A more oxidizi

APA, Harvard, Vancouver, ISO, and other styles

5

Uboldi, E. "THE ROLE OF OXYGEN PARTIAL PRESSURES ON CHEMICAL AND BIOCHEMICAL PROPERTIES OF RED MEATS." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/232644.

Full text

Abstract:

Meat is an essential component of a balanced diet, since it is a source of important nutrients totally or almost absent in all other foods. The distribution and sale of fresh meat products present many critical points, and a major concern is the product waste due to uncorrected practices at all levels (i.e. farmer, slaughter house, processor, distributor, retailer, consumer) and short shelf lives. In addition to good manufacturing practices and consumer education, meat packaging can help in prolonging the shelf life of meat products. In fact, the possibility to determine and control the oxygen

APA, Harvard, Vancouver, ISO, and other styles

6

Stefanik, Todd Stanley 1973. "The effect of oxygen partial pressure on the epitaxy of cerium oxide films deposited on nickel substrates." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/47650.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Iwagoshi, Thawi. "Influence of oxygen partial pressure on the crystal growth and texture formation of some high-tc superconductors /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu148794150429637.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Seetharaman, Sridhar 1971. "Effect of temperature, oxygen partial pressure and current on the kinetics of the noble-metal / YSZ interfacial reaction." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/39626.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lopes, Sara Luisa Castro Sobral. "Quantificação dos valores da pressão parcial de oxigénio (po2) e da saturação do oxigénio (so2) para caracterização dos níveis de hipoxia no tumor mamário de cadelas : estudo preliminar." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2017. http://hdl.handle.net/10400.5/13433.

Full text

Abstract:

Dissertação de Mestrado Integrado em Medicina Veterinária<br>Os tumores da mama representam a neoplasia mais frequente na cadela, com uma taxa de malignidade de cerca de 50%. A elevada taxa de proliferação celular verificada no desenvolvimento tumoral, resulta num inadequado aporte de oxigénio a algumas regiões do tumor originando zonas de hipoxia, a qual se relaciona num sistema causa-efeito com o nível de resposta terapêutica dos doentes oncológicos. O estudo presente foi realizado numa amostra de 32 indivíduos (N=32), da espécie Canis familiaris, do género feminino, e teve como objectivo qu

APA, Harvard, Vancouver, ISO, and other styles

10

Bartie, Neill J. "The effects of temperature, slag chemistry and oxygen partial pressure on the behaviour of chromium oxide in melter slags." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16255.

Full text

Abstract:

Thesis (MScIng)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: This thesis details results obtained in an experimental study conducted to determine the effects of operating temperature, oxygen partial pressure, bulk chromium oxide content and bulk FeOx/MgO ratio on the solubility of chromium oxide in melter type slags in the platinum industry. Two PGM-containing layers in the Bushveld Complex in South Africa, the Merensky and UG2 reefs, are currently being mined for the extraction of base metals and platinum group metals (PGM). While the Merensky reef is a pyroxenitic layer, the

APA, Harvard, Vancouver, ISO, and other styles

11

Byrne, David Edward. "The effect of high ambient pressure, raised respired gas density and increased partial pressure of oxygen on the carotid sinus baroreceptor control of heart rate in man." Thesis, University of Aberdeen, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337077.

Full text

Abstract:

Experiments were performed to elucidate the mechanisms contributing to the hyperbaric bradycardia. Ethical approval was obtained and all subjects gave written and informed consent. Heart rate, arterial blood pressure, respiratory activity and carotid sinus baroreceptor reflexes were monitored non-invasively. Four healthy male saturation divers were compressed to 46ATA. Significant reductions in resting heart rate, mean arterial pressure, systolic blood pressure and diastolic blood pressure were observed. Baroreceptor sensitivity was significantly increased at 46ATA. A separate series of invest

APA, Harvard, Vancouver, ISO, and other styles

12

jahanzeb, Nabeel. "Erosion during Brazing in Stainless Steel grade 304." Thesis, KTH, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116688.

Full text

Abstract:

The erosion or dissolution of stainless steel grade 304 as base metal by molten brazing fillermetal was investigated using one nickel and two iron based filler metals. The difference betweentwo iron filler metal is 5 % Manganese content in one of the filler metal. The Wettability of fillermetal is effected by oxidation of base or filler metal for which high vacuum or non reacting gasis used as a furnace atmosphere to reduce the partial pressure of oxygen. The furnace parameterseffecting erosion of base metal was observed e.g. peak temperature and brazing time. The effectof filler mass was also

APA, Harvard, Vancouver, ISO, and other styles

13

Lee, Tak-yee. "Part 1: Computer aided dosage form design: theory and applications. Part 2: Kinetics and mechanism of captopril oxidation in aqueous solutions under controlled oxygen partial pressure /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487266011224445.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Pennisi, Vanessa. "Contribution à l'identification et à l'évaluation d'un combustible UO2 dopé à potentiel oxygène maîtrisé." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0191/document.

Full text

Abstract:

La température et la pression partielle d’oxygène (PO2) constituent les paramètres majeurs contrôlantles évolutions thermochimiques en réacteur des combustibles nucléaires de type oxyde, et notammentla spéciation des produits de fission potentiellement corrosifs (Cs, I, Te). Pour limiter les risques derupture de la gaine en Zr par corrosion, une solution innovante consiste à imposer au combustible defonctionner dans un domaine de PO2 où les espèces chimiques des gaz de fission sont inoffensives, pardopage in-situ avec un tampon oxydo-réducteur solide. Le niobium, avec ses couples redoxNbO2/NbO

APA, Harvard, Vancouver, ISO, and other styles

15

Li, Sonny X. "Nitrogen doped zinc oxide thin film." Berkeley, Calif. : Oak Ridge, Tenn. : Lawrence Berkeley National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/821916-VLVAK9/native/.

Full text

Abstract:

Thesis (M.S.); Submitted to the University of California, Berkeley, 210 Hearst Mining Memorial Bldg., Berkeley, CA 94720 (US); 15 Dec 2003.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "LBNL--54116" Li, Sonny X. USDOE Director. Office of Science. Basic Energy Sciences (US) 12/15/2003. Report is also available in paper and microfiche from NTIS.

APA, Harvard, Vancouver, ISO, and other styles

16

Flynn, Liam Martin Clint. "Physiological responses to brain tissue hypoxia and blood flow after acute brain injury." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31268.

Full text

Abstract:

This thesis explores physiological changes occurring after acute brain injury. The first two chapters focus on traumatic brain injury (TBI), a significant cause of disability and death worldwide. I discuss the evidence behind current management of secondary brain injury with emphasis on partial brain oxygen tension (PbtO2) and intracranial pressure (ICP). The second chapter describes a subgroup analysis of the effect of hypothermia on ICP and PbtO2 in 17 patients enrolled to the Eurotherm3235 trial. There was a mean decrease in ICP of 4.1 mmHg (n=9, p < 0.02) and a mean decrease in PbtO2 (7.8

APA, Harvard, Vancouver, ISO, and other styles

17

Khair, Mira. "Oxydo-réduction et spéciation des produits de fission corrosifs dans les combustibles oxydes : évaluation des bénéfices d'un combustible tamponné en pO2." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0360.

Full text

Abstract:

L’amélioration des performances du combustible nucléaire nécessite, aussi bien en régime nominal que lors de rampes de puissance ou de transitoires accidentels, d’être en mesure de maîtriser les effets délétères induits par la réactivité chimique des produits corrosifs (générés par la fission) susceptibles de provoquer des ruptures de gaine. Dans cet objectif, ce travail vise à maîtriser le potentiel d'oxygène de fonctionnement du combustible dans un domaine stabilisant les formes non corrosives de l’iode, par l’usage in-situ de systèmes tampons d’oxydo-réduction appropriés. En fonctionnement

APA, Harvard, Vancouver, ISO, and other styles

18

Mohammed, Jelila Sarah. "A Study of High Temperature Reactions in Oxide-Dispersion-Strengthened Molybdenum at Reduced Oxygen Partial Pressures." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5092.

Full text

Abstract:

Rare-earth oxides used in oxide dispersion strengthening are known to provide excellent strength and deformability over ordinary dispersion strengthening. It has been suggested that this may be due to the development of molybdate compounds instead of pure dispersed oxide particles. These alloys are produced by dispersing particles of certain rare-earth oxides in a molybdenum matrix and forming the mixture into a composite ingot. During the high-temperature consolidation process, the oxides are converted into rare-earth molybdates. With subsequent processing, these molybdate phases undergo d

APA, Harvard, Vancouver, ISO, and other styles

19

Bu, Junfu. "Advanced BaZrO3-BaCeO3 Based Proton Conductors Used for Intermediate Temperature Solid Oxide Fuel Cells (ITSOFCs)." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-165073.

Full text

Abstract:

In this thesis, the focus is on studying BaZrO3-BaCeO3 based proton conductors due to that they represent very promising proton conductors to be used for Intermediate Temperature Solid Oxide Fuel Cells (ITSOFCs). Here, dense BaZr0.5Ce0.3Y0.2O3-δ (BZCY532) ceramics were selected as the major studied materials. These ceramics were prepared by different sintering methods and doping strategies. Based on achieved results, the thesis work can simply be divided into the following parts: 1) An improved synthesis method, which included a water-based milling procedure followed by a freeze-drying post-pr

APA, Harvard, Vancouver, ISO, and other styles

20

Albertsson, Galina. "Abatement of Chromium Emissions from Steelmaking Slags - Cr Stabilization by Phase Separation." Doctoral thesis, KTH, Materialens processvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133480.

Full text

Abstract:

Chromium is an important alloying element in stainless steel but also environmentally harmful element. A number of mineralogical phases present in the slag matrix can contain chromium and lead to chromium leaching. Chromium in slag if not stabilized, could oxidize to the cancerogenic hexavalent state, and leach out if exposed to acidic and oxygen rich environment. Other environmental concerns are slag dusting and chromium escape to the atmosphere. Despite the fact that there is a certain risk of Cr-emission from slags at operating conditions, still very little is known regarding the emission o

APA, Harvard, Vancouver, ISO, and other styles

21

Rault, Laurence. "Étude de la cinétique d'oxydation des alliages aluminium-magnésium liquides sous air humide." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0133.

Full text

Abstract:

L'oxydation des alliages aluminium-magnesium liquides sous air humide a ete etudiee au moyen de deux techniques complementaires. L'analyse thermogravimetrique a permis d'obtenir des informations quantitatives concernant les cinetiques d'oxydation. Un dispositif d'observation in situ concu au laboratoire a donne des informations sur les evolutions de la morphologie en cours d'oxydation. Il a egalement permis d'oter la couche initiale d'oxyde de surface de facon a etudier l'oxydation d'un film forme sur le metal liquide. Des observations micrographiques ont complete les resultats. La couche de m

APA, Harvard, Vancouver, ISO, and other styles

22

Le, Ngoc Tuan. "Optimisation of sludge pretreatment by low frequency sonication under pressure." Thesis, Toulouse, INPT, 2013. http://www.theses.fr/2013INPT0129/document.

Full text

Abstract:

L'objectif de ce travail est d'optimiser le prétraitement de boues par des ultrasons de puissance (US) à basses fréquences, et en particulier d‘étudier pour la première fois des améliorations possibles en modifiant la pression hydrostatique, et la fréquence jusqu’à l’audible. Après un examen préliminaire des conditions du procédé (conditionnement des boues, type de boues, alcalinisation préalable, contrôle de la température), les effets des paramètres ultrasonores (puissance, intensité, énergie spécifique, fréquence) et de la pression hydrostatique ont été spécifiquement étudiés, séparément et

APA, Harvard, Vancouver, ISO, and other styles

23

Arikan, Abelló Fuat. "Aportaciones de la monitorización intraoperatoria de la presión tisular de oxígeno en neurocirugía vascular." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/288296.

Full text

Abstract:

La present Tesi Doctoral està composta per quatre articles dirigits a aprofundir en el coneixement de les malalties cerebrovasculars a partir de la monitorització intraoperatòria de la pressió tissular d'oxigen (PtiO2) mitjançant sondes polarogràfiques del tipus Clark. Els estudis que la componen són: • [Detection of episodes of ischemic tissue hypoxia by means of the combined intraoperative neurophysiologic monitoring with the tissue oxygenation monitoring in aneurysm surgery]. Arikan F, Vilalta J, Minoves T, Moncho D, Vilalta A, Noguer M, Ibarra B, Sahuquillo J. Neurosurgery (Astur). 2008 A

APA, Harvard, Vancouver, ISO, and other styles

24

Milea, Andrei-Silviu. "Experimental investigation of innovative Low NOx / low soot injection systems for spinning combustiοn technology using advanced laser diagnostics". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMIR43.

Full text

Abstract:

Les effets anthropogéniques sur l’environnement posent un défi majeur pour l’industrie aéronautique. Des réglementations de plus en plus strictes et la nécessité de rendre le transport aérien durable orientent les recherches actuelles vers des systèmes propulsifs innovants. Dans ce contexte, Safran Helicopter Engines développe sa technologie brevetée de combustion giratoire (SCT), visant à améliorer les performances des moteurs d’hélicoptères. Déjà implémentée sur le moteur Arrano, cette technologie est davantage optimisée pour réduire significativement les émissions de NOx et de suies. Dans l

APA, Harvard, Vancouver, ISO, and other styles

25

Wehkamp, Cara Ann. "Plant Age Affects the Long-term Growth Responses to Reduced Total Pressure and Oxygen Partial Pressure." Thesis, 2009. http://hdl.handle.net/10214/2007.

Full text

Abstract:

Fundamental to the future of space exploration is the development of advanced life support systems capable of maintaining crews for significant periods without re-supply from Earth. Bioregenerative life support systems harness natural ecosystem processes and employ plant photosynthesis and transpiration to produce food, supply oxygen, and regenerate water while consuming carbon dioxide. Proposed Lunar and Martian exploration has prompted interest into the effects of hypobaria on plant development. Reduced atmospheric pressure conditions will reduce the pressure gradient between the structure a

APA, Harvard, Vancouver, ISO, and other styles

26

Zhu, Ivan Xuetang. "Effect of Oxygen Partial Pressure and COD Loading on Biofilm Performance in a Membrane Aerated Bioreactor." Thesis, 2008. http://hdl.handle.net/1807/11128.

Full text

Abstract:

The membrane aerated bioreactor (MABR) is a unique technological innovation where a gas permeable membrane is applied to biological processes. In an MABR, oxygen and other substrates diffuse from the opposite directions into a biofilm, and thus simultaneous chemical oxygen demand (COD) and nitrogen removal can be achieved. However, controlling biofilm thickness, stability, and attachment is challenging. The objectives of this research were to study the effect of oxygen partial pressure on process performance with respect to nitrogen removal and examine the biomass properties in MABRs at dif

APA, Harvard, Vancouver, ISO, and other styles

27

Chao-WeiYang and 楊朝偉. "Effect of Oxygen Partial Pressure on the Formation Mechanism, Defect Structure, and Physical Properties of Sr2FeMoO6." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/51035129863918573303.

Full text

Abstract:

博士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>100<br>The special electronic and magnetic properties of Sr2FeMoO6 have attracted much interest on highly potential application and novel material. But senstive and unstable synthysis process has hinded the research and blocked its applications. This research project is focused on optimizing its process parameters and analyizing the micro-structure, electronic conduction, and magnetresistance properties under different oxygen partial pressure during sintering process. Through the detail controlling of oxygen partial pressure during sintering process, it have be

APA, Harvard, Vancouver, ISO, and other styles

28

Swetha, Chavva. "Development of Experimental setup for Electricalconductivity Measurement as a Function of Temperature and Oxygen Partial Pressure." Thesis, 2017. http://ethesis.nitrkl.ac.in/8789/2/2017_MT_CSwetha.pdf.

Full text

Abstract:

Conductivity measurement as a function of temperature and partial pressure gives carrier concentration, carrier mobility, and the lifetime of excess carriers. In this project design was selected and the three dimensional design of the final design was made using CATIA (version 5) software, after which the equipment was fabricated using brass. This air tight experimental setup is developed to measure conductivity as a function of temperature and partial pressure. With this setup conductivity is measured using four probe method. Four probe arrangement is made using platinum wires passing through

APA, Harvard, Vancouver, ISO, and other styles

29

Chen, Yu-Chih, and 陳昱至. "Partial Pressure Estimation of Brain Tissue Oxygen in Traumatic Brain Injury by Using Wireless Near Infrared Spectroscopy." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/3j2866.

Full text

Abstract:

碩士<br>國立交通大學<br>照明與能源光電研究所<br>102<br>Monitoring partial pressure of oxygen in the brain tissue (PbtO2) is an important standard for traumatic brain injury (TBI) patients in clinical. But it is an invasive measurement and inconvenient for real-time monitoring. Recently, Near-infrared spectroscopy (NIRS) is widely used in neuroscience, and can assess cerebral ischemia and hypoxia non-invasively. In this thesis, a novel wireless NIRS system, and the PbtO2 monitoring system were used to monitor the oxygenation of rat brains under different impact strengths. And all rats were randomly assigned to f

APA, Harvard, Vancouver, ISO, and other styles

30

Hsieh, Tsung-Chun, and 謝宗均. "Structural, Optical, and Magnetic Properties of Zinc Gadolinium Oxide Thin Films Deposited under Different Oxygen Partial Pressure." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/76192578602297691315.

Full text

Abstract:

碩士<br>國立臺灣師範大學<br>物理學系<br>103<br>Pulsed-laser deposition(PLD) was applied to grow 150nm thick gadolinium(Gd)- doped ZnO(Gd:ZnO) thin films on c-sapphire substrate under two different oxygen partial pressures of 0.08 and 0.3 mbar. The Gd concentration ranges from 0 to 20 at.%, temperature of substrate is 700 degree Celsius, and laser fluence is 2.6 J/cm2. The relations bewteen oxygen partial pressure and deposition rate, structural properties, optical properties and magnetic properties of Gd:ZnO thin films were investigated in this study. Deposition rate of Gd:ZnO thin films were increase a

APA, Harvard, Vancouver, ISO, and other styles

31

Luscher, Walter G. Hellmann John R. "Role of composition and oxygen partial pressure on microstructural and crystalline phase evolution in aluminosilicate derived aggregates." 2007. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1980/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Lin, Ming Yi, and 林明毅. "Effects of aggregate size and oxygen partial pressure on the L-dopa production in stizolobium hassjoo cell suspension cultures." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/25277768832404653188.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Estrada, Arnold Delfino. "High-resolution measurement of dissolved oxygen concentration in vivo using two-photon microscopy." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-05-2806.

Full text

Abstract:

Because oxygen is vital to the metabolic processes of all eukaryotic cells, a detailed understanding of its transport and consumption is of great interest to researchers. Existing methods of quantifying oxygen delivery and consumption are non-ideal for in vivo measurements. They either lack the three-dimensional spatial resolution needed, are invasive and disturb the local physiology, or they rely on hemoglobin spectroscopy, which is not a direct measure of the oxygen available to cells. Consequently, many fundamental physiology research questions remain unanswered. This dissertation prese

APA, Harvard, Vancouver, ISO, and other styles

34

Fu, Guan-Wei, and 傅冠維. "Preparation of Delafossite-CuFeO2 Thin Films at Different Oxygen Partial Pressure in the Post-annealing Conditions by Sol-gel Method." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/5d6bkc.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>102<br>In this study, we discuss the effect of partial oxygen pressure (pO2) and temperature in the post-annealing process on the formation of the delafossite-CuFeO2 thin films. The sol-gel derived films deposited on the quartz substrate were annealed at 500℃ for 1h in air and post-annealed at 500-850℃ in pO2=10-2-5×10-5 atm for 2 and 12 h. CuO and CuFe2O4 phases were found when the specimens were post-annealed below 800℃ in pO2=10-2 atm for 2 h, 600℃ in pO2=10-3 atm for 2 h, and 550℃ in pO2=5×10-5 atm for 2 h. The delafossite-CuFeO2 phase appeared when t

APA, Harvard, Vancouver, ISO, and other styles

35

Chang, Kuei-Ping, and 張桂萍. "Influences of the oxygen partial pressure and temperature in post-annealing conditions on the formation of delafossite-CuCrO2 thin films." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/04377565339819388539.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>101<br>In this study, the phase change of Cu-Cr-O thin films prepared by sol-gel process were post-annealed at oxygen partial pressures and temperatures. Firstly, Cu-Cr-O thin films were deposited onto quartz substrates using sol-gel processing and spin-coating technique. Thereafter, these specimens were annealed at 500℃ in air for 1 h and were post-annealed under various partial oxygen pressure levels ranging from 0.21 to 10-3 atm between 600℃ and 850℃. X-ray diffraction patterns showed that the CuO and CuCr2O4 phase were appeared between pO2=0.21 atm and

APA, Harvard, Vancouver, ISO, and other styles

36

Baker, Lynette Margaret. "Arterial blood gas: an experiment to study the effects of temperature and time delays on the outcome of a blood gas result." Diss., 2008. http://hdl.handle.net/10500/2307.

Full text

Abstract:

An arterialblood gas analysis which is conducted in critical care areas contributes to the assessment of a patient's ventilatory status and acid -base balance. The purpose of this research was to determine the relationship of time delays and temperature on the result of a blood gas analysis. The objective was to either accept or refute the null hypothesis, that there is no relationship between temperature and time delays and an arterial blood gas result Fifteen subjects were randomly selected. The researcher drew three samples of arterial blood from each subject. Ethical principles were o

APA, Harvard, Vancouver, ISO, and other styles

37

Yu, Hsiao-Hsuan, and 游孝煊. "Effect of oxygen partial pressure, buffered Bi2O3 layers, and V doping on the ferroelectricity of (Bi,La)4Ti3O12 films grown by radio-frequency sputtered deposition." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/81487006920756452368.

Full text

Abstract:

碩士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>91<br>Effects of O2/Ar ratio, buffered Bi2O3 layers, and ion implantation on the ferroelectricity and microstructures of (Bi,La)4Ti3O12(BLT) and V-doped BLT(BLTVx) films deposited by radio-frequency sputtering were studied. The remanent polarization(2Pr) of BLTV0.03 films increased with the O2/Ar ration up to 1:1.5 and 1:1 and then decreased with the ratio layer than 1.5:1 due to the reduction of grain size. The BLTVx films with the V concentration in the range of x=0.03-0.07 owned the 2Pr large than that of BLT films, whereas the 2Pr of BLTV0.15 films dropped

APA, Harvard, Vancouver, ISO, and other styles

38

Lin, Meng-Shian, and 林夢嫺. "Effect of oxygen partial pressure, buffered Bi2O3 layers, and W doping on the ferroelectricity of (Bi,Nd)4Ti3O12 films grown by radio-frequency sputtered deposition." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/25871191060612317797.

Full text

Abstract:

碩士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>91<br>Effect of O2/Ar ratio, buffered Bi2O3 layers, W doping, and P+ and BF2+ implantation on the ferroelectricity and microstructures of radio-frequency sputtered (Bi,Nd)4Ti3O12 (BNT) films were studied. The remanent polarization (2Pr) increased with the O2/Ar ratio in the range of 1:9-1:1.5 and then decreased with the ratio larger than 1.5:1 because of the reduction of grain size. For W-doped BNT (BNTWx) films the 2Pr slightly increased with the W concentration in the range of x=0.005-0.01, and then remarkably decreased with the W concentration larger than x=

APA, Harvard, Vancouver, ISO, and other styles

39

Chang, Chi-Tai, and 張啟泰. "ZnO thin films deposited under various oxygen partial pressures by ion beam sputtering at room temperature." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/64842145257208761565.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

dan, cheng-dong, and 鄧建東. "The Inflence of Oxygen Partial Pressures and of Metallic Impurities on the Oxidation-Induced Stacking Faults in Silicon." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/00955437402295168350.

Full text

Abstract:

碩士<br>國立中興大學<br>材料工程學研究所<br>85<br>This study focus on the influence of (1) controlled oxygen partial pressureand (2) metallic impurities for the oxdation- induced stacking faults (OISF)length and density at high temperture(1) In controlled amosphere, this research is based on controlled oxidation partial pressure in reactor. The oxdation partial pressure are oxation 1 to 10E-12 atm.(2) In controlled materiallic impurity, three metallic impurity, ferrous,nickle and copper, are used to study

APA, Harvard, Vancouver, ISO, and other styles

41

Kuang, Shiunn-Chong, and 匡訓沖. "Experiment of the Influence of Particle Sizes on a Single-Bed Rapid Pressure Swing Adsorption Oxygen Concentrator." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/25497092527160834738.

Full text

Abstract:

碩士<br>國立中央大學<br>化學工程研究所<br>82<br>RPSA(Rapid Pressure Swing Adsorption)的成功歸功於極細吸附劑所造成的床內壓力降。本文探討40-60 mesh、80-100 mesh及混合不同粒徑範圍(含pellet與granule)的5A沸石(zeolite)吸附劑對單塔式快速變壓吸附生產富氧氣體之影響。並試驗以空氣壓縮機替代高壓鋼瓶進氣之可行性。研究中針對上述之各種粒徑範圍的吸附劑，分成短床(重400公克，長度約23公分)、中床(重884公克，長度約51公分)及長床(重1200公克，長度約70公分)三種吸附床長度，再針對每一種吸附床長度，將產氣流量分為 250ml/min、500ml/min及1000ml/min。其中每個產氣流量都作最適循環操作時間之探討。文中參考吳修閘(1993)從事之研究所得之數據(吸附劑粒徑範圍60-80 mesh)，並加以比較。實驗結果發現，以空氣壓縮機替代高壓鋼瓶進氣有實際的困難，吸附實

APA, Harvard, Vancouver, ISO, and other styles

42

Mu, Shangshang. "Experimental investigation of olivine and olivine-rich rocks at high pressure and high temperature." Thesis, 2015. https://hdl.handle.net/2144/14045.

Full text

Abstract:

Olivine is the most abundant mineral in Earth's upper mantle and is one of the major minerals discovered in extraterrestrial objects. Its physical properties govern the dynamics of the upper mantle. The most dynamic regions of the upper mantle are sites where melting and melt segregation occurs. These regions are also the most variable in terms of their oxygen fugacity. We therefore conducted piston cylinder experiments to determine the intergranular melt distribution, and explore a range of oxygen buffers. We annealed olivine aggregates in metallic and graphite capsules to determine the oxyge

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!