Gotowe bibliografie tematyczne / Oxidization

Gotowa bibliografia na temat „Oxidization”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 20 lutego 2023

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Artykuły w czasopismach na temat "Oxidization"

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Mergia, K., Volker Liedtke, T. Speliotis, G. Apostolopoulos i S. Messoloras. "Thermo-Mechanical Behaviour of HfO2 Coatings for Aerospace Applications". Advanced Materials Research 59 (grudzień 2008): 87–91. http://dx.doi.org/10.4028/www.scientific.net/amr.59.87.

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The use of ceramic composite materials in aerospace applications requires the development of oxidization protection coatings which can withstand very high temperatures. HfO2 is a promising material as a high temperature oxidization protective layer. HfO2 coatings have been deposited by radiation frequency magnetron sputtering all over the surface of SiC substrates and were tested under re-entry conditions. Also their oxidization resistance in air in the temperature range 1100 to 1450°C has been examined. The coatings were found to be stable and well-adhering to the substrate even after 100 re-entry cycles. No oxidization of the underlying SiC structure is observed. Re-entry and oxidization tests result in the formation of HfSiO4 at the HfO2/SiC interface, which further promotes their oxidization resistance.
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Fu, Ying, Yan Zheng Wang, Juan Tan, Hong Lan Li i Xin Yu Zhang. "Oxidation Behavior of Stable-Oxidative-Poly-Si-Fe (SOPSF) Coagulant". Applied Mechanics and Materials 341-342 (lipiec 2013): 266–69. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.266.

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The oxidation behavior of a stable-oxidative-poly-Si-Fe (SOPSF) coagulant prepared by water glass and H2SO4 solution in treating a synthetic humic acid (HA) water was probed, in compraison with that of poly-Si-Fe (PSF) and Polyferric aluminum (PFA). The results revealed that the oxidization of SOPSF and PSF was very stable during the whole coagulation process, and played a role during the whole process including quiescent settling stage. While PFA almost gave no oxidization even at higher dose of 0.322 mmol.L-1. The oxidization rate of SOPSF was slower than that of SOPSF hydrolysis and destabilization process. Coagulation mechanism of SOPSF in removing dissolved organic matters (DOMs) may be a comprehensive results between the alternating interaction of oxidization/adsorption-destabilization/oxidization, bridging and sweeping.
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Han, Shi Zhong, Qiang Zhang i Zhi Qiong Chen. "Non-Thermal Plasma and Catalyst System for Simultaneously Oxidizing SO2 and NOx". Advanced Materials Research 634-638 (styczeń 2013): 864–68. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.864.

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For the requirements of nitric oxide (NOx) and sulfur dioxide (SO2) removal process in coal-fired power plant, a new non-thermal plasma system combined with catalyst was developed to investigate the effect of parameters such as temperature, atmosphere, residence time, and additives (NH3 and methanol) on NOx and SO2 conversion rate. The results indicated that the new system could greatly promote the NOx conversion rate while it only had a slight influence on the SO2 oxidization rate. Meanwhile, high temperature suppressed the NO oxidization, and promoted the SO2 oxidation. The long residence time was beneficial to the NOx and SO2 oxidization. In the absence of water, the additive of NH3 can improve NO, NOx, and SO2 oxidization rate due to the reactions between NH3 and NOx, or SO2. Contrary to NH3, methonal had a negative effect on NOx and SO2 oxidization.
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Miroshnichenko, D. V., i Yu S. Kaftan. "The oxidization of coal". Coke and Chemistry 60, nr 5 (maj 2017): 177–84. http://dx.doi.org/10.3103/s1068364x17050052.

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Zou, Xing. "Improving in Oxidization Kinetics of Manganese Sulfate Hydrolyzates in Alkaline Solution Media". Advanced Materials Research 538-541 (czerwiec 2012): 2448–52. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2448.

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The oxidization of hydrolyzates of manganese sulfate had been investigated in ammoniacal solution. The results show that hydrolyzates of manganese sulfate are oxidized slowly by air, furthermore, their oxidization rate less depends on temperature and acidity in the ranges of their respective certain values, but the oxidization rate for hydrolyzates of manganese sulfate can be increased significantly by adding some additives, activatiing hydrolyzates or changing molecular structure of hydrolyzates.
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Wang, Li Ping, Wei Juan Jiang, Er Deng Du, Chu Qiao Wang i Nai Yun Gao. "Treatment of Lake-Type Raw Water by Ultrasonic and Photocatalytic Oxidization Process". Advanced Materials Research 156-157 (październik 2010): 127–31. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.127.

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The lake-type raw water was treated in a photocatalytic oxidization reactor. The experiment was carried out using ultrasonic under the condition of flow rate 10L/h, the padding packing compares 2/5, UV lamp 30W, non-additional chemicals, pH 7.35. Moremore, the raw water also was treated by ultrasonic / photocatalytic oxidization integrated process under the same control conditions. The results indicate that, after ultrasonic / photocatalytic oxidization process for 36 hours, the average removal of CODMn, TP, Chl-a and OD560 were 25.3%, 30.1%, 98.6% and 88.1%, respectively.
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Eliezer, Amir. "Corrosion Behavior of Surfaced AM50 Magnesium Alloys under Stress Conditions". Advanced Materials Research 95 (styczeń 2010): 79–83. http://dx.doi.org/10.4028/www.scientific.net/amr.95.79.

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Micro-arc oxidization of AM50 magnesium alloys was studied. The influence of micro-arc oxidization process was investigated; phase structure were analyzed using X-ray diffraction (XRD). Open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) were used to evaluate the corrosion resistance of ceramic coatings formed on magnesium alloys under stress conditions. XRD analyses indicate that the ceramic coatings fabricated on the surface of magnesium alloys by micro-arc oxidization are composed of spinel phase MgAl2O4 The corrosion resistance of ceramic coatings is improved compared with magnesium alloy substrate.
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Xu, Shu Qiong. "Research of New Type PAN-Based Carbon Fiber Pre-Oxidization Furnace and its Temperature Controlling Property". Advanced Materials Research 189-193 (luty 2011): 1969–72. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1969.

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A new type pre-oxidization furnace used for producing PAN-based carbon fiber has been developed. Practical operations showed that the furnace possesses characteristics of reasoanable design, higher temperature controlling precision and high hot efficiency. It is an ideal pre-oxidization furnace.
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Nanjo, Junji, i Shigeru Nomura. "Surface oxidization of semiconducting silicon." Bulletin of the Japan Institute of Metals 24, nr 9 (1985): 739–45. http://dx.doi.org/10.2320/materia1962.24.739.

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Zhang, Yu Wei, Jin Yong Zhang, Jing Jing Xie i Zheng Yi Fu. "ZrC Oxidization Mechanism in Air". Key Engineering Materials 512-515 (czerwiec 2012): 1721–24. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1721.

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The ZrC oxidization mechanism in air was carefully investigated by the phase composition and grain morphology through DSC, X-ray diffraction and SEM respectively at different temperature. It was found that the oxidization of ZrC start at about 400°C by oxygen atom entering the interstitial sites to substitute part of Carbon. Zr2O and ZrO2can be formed at a temperature of about 600°C and 1000°Crespectively. And ZrC will completely transfer to ZrO2at 1000°C for 5hrs. No obvious grain morphology change was found under 600°C.
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Rozprawy doktorskie na temat "Oxidization"

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Korytowski, Agatha Anna [Verfasser], i Motomu [Akademischer Betreuer] Tanaka. "Influence of Lipid Oxidization on Structures and Functions of Biological Membranes / Agatha Anna Korytowski ; Betreuer: Motomu Tanaka". Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180610547/34.

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YAMAMOTO, Kazuhiro, Hiroshi YAMASHITA, Hiroyoshi YANA, 和弘 山本, 博史 山下 i 弘好 家根. "排気ガス中のNOの白金触媒による酸化反応に関する数値解析". 一般社団法人 日本機械学会, 2009. http://hdl.handle.net/2237/19805.

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3

Gregory, Mary Sarah-Jane, i n/a. "Thioredoxin and Oxidative Stress". Griffith University. School of Health Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040301.082639.

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The experiments described in this thesis involve the expression and characterisation of recombinant truncated thioredoxin (tTrx) and the potential involvement that thioredoxin (Trx) has in the cellular responses to oxidative stress. Truncated Trx (80 amino acids) was expressed from a plasmid containing the ORF for tTrx that had been introduced into E.coli BL-21(DE3) cells. The protein was initially extracted using a combination of high concentrations of urea, high pH levels, and multiple sonification steps to remove the tTrx from inclusion bodies formed during expression. This procedure produced a stable solution of tTrx. Purification of tTrx from this protein solution required anion exchange chromatography followed by gel permeation in a HPLC system to obtain fully purified, recombinant tTrx which allowed further characterisation studies to be undertaken. An initial investigation into tTrx was performed to determine some basic physical, biochemical and functional aspects of this hitherto relatively undefined protein. Analysis by sedimentation equilibrium indicated that freshly prepared tTrx forms a single species with a molecular weight of 18.8kDa. This value indicates that recombinant tTrx naturally forms a dimer in solution that was shown to be non-covalent in nature and stable in solution. The capacity of tTrx to reduce protein disulphide bonds was determined using the insulin reduction assay. Results show that tTrx lacks this particular redox ability. The rate of oxidisation at 4 degrees C was analysed using free thiol determination, sedimentation equilibrium and SDS-PAGE patterning. Results indicated a steady rise in the degree of oxidation of tTrx over an eight day period. After six days the oxidated protein consistently displayed the presence of intramolecular disulphide bonds. Covalently-linked disulphide dimers and higher molecular weight oligomers were detectable after eight days oxidation. An investigation of the reducing capacity of the basic Trx system determined that fully oxidised tTrx was unable to act alone as a substrate for thioredoxin reductase (TR). However, when reduced Trx was added to the system, it appeared capable of acting as an electron donor to the oxidised tTrx in order to reduce disulphide groups. Recombinant tTrx was successfully radiolabelled with Trans 35S-methionine/cysteine for use in cell association studies. No evidence was found to indicate the presence of a receptor for tTrx on either MCF-7 or U-937 cells. Findings suggest that a low level of non-specific binding of tTrx to these cell lines rather than a classical ligand-binding mechanism occurs thus suggesting the absence of a cell surface receptor for tTrx. The role that Trx may play in the cellular responses to oxidative stress was also investigated. The chemical oxidants hydrogen peroxide (H2O2) and diamide were used to establish an in vitro model of oxidative stress for the choriocarcinoma cytotrophoblast cell line JEG-3. Cellular function was assessed in terms of membrane integrity, metabolic activity and the ability to synthesis new DNA following exposure to these oxidants. Results indicated that both agents were capable of causing cells to undergo oxidative stress without inducing immediate apoptosis or necrosis. Initially, JEG-3 cells exposed to 38μM or 75μM H2O2 or 100μM diamide were shown to display altered cell metabolism and DNA synthesis without loss to cell viability or membrane integrity. Cells were also shown to be capable of some short-term recovery but later lapsed into a more stressed state. Expression levels of Trx were studied to determine whether this type of chemical stress caused a change in intercellular protein levels. Both cELISA and western blotting results indicated that only cells exposed to 100μM diamide displayed any significant increase in Trx protein levels after 6 or 8hrs exposure to the oxidant. Further studies over a longer time-frame were also performed. These found that when JEG-3 cells were exposed to 18μM H2O2 or 200μM diamide over 12-48hrs, a positive correlation between increasing endogenous Trx protein levels and a decline in cell proliferation was observed. Cytotrophoblast cells, which are responsible for implantation and placentation, are susceptible to oxidative stress in vivo and their anti-oxidant capacity is fundamental to the establishment of pregnancy. The findings obtained during these studies suggest that Trx plays a role in this process.
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4

Gregory, Mary Sarah-Jane. "Thioredoxin and Oxidative Stress". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367183.

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The experiments described in this thesis involve the expression and characterisation of recombinant truncated thioredoxin (tTrx) and the potential involvement that thioredoxin (Trx) has in the cellular responses to oxidative stress. Truncated Trx (80 amino acids) was expressed from a plasmid containing the ORF for tTrx that had been introduced into E.coli BL-21(DE3) cells. The protein was initially extracted using a combination of high concentrations of urea, high pH levels, and multiple sonification steps to remove the tTrx from inclusion bodies formed during expression. This procedure produced a stable solution of tTrx. Purification of tTrx from this protein solution required anion exchange chromatography followed by gel permeation in a HPLC system to obtain fully purified, recombinant tTrx which allowed further characterisation studies to be undertaken. An initial investigation into tTrx was performed to determine some basic physical, biochemical and functional aspects of this hitherto relatively undefined protein. Analysis by sedimentation equilibrium indicated that freshly prepared tTrx forms a single species with a molecular weight of 18.8kDa. This value indicates that recombinant tTrx naturally forms a dimer in solution that was shown to be non-covalent in nature and stable in solution. The capacity of tTrx to reduce protein disulphide bonds was determined using the insulin reduction assay. Results show that tTrx lacks this particular redox ability. The rate of oxidisation at 4 degrees C was analysed using free thiol determination, sedimentation equilibrium and SDS-PAGE patterning. Results indicated a steady rise in the degree of oxidation of tTrx over an eight day period. After six days the oxidated protein consistently displayed the presence of intramolecular disulphide bonds. Covalently-linked disulphide dimers and higher molecular weight oligomers were detectable after eight days oxidation. An investigation of the reducing capacity of the basic Trx system determined that fully oxidised tTrx was unable to act alone as a substrate for thioredoxin reductase (TR). However, when reduced Trx was added to the system, it appeared capable of acting as an electron donor to the oxidised tTrx in order to reduce disulphide groups. Recombinant tTrx was successfully radiolabelled with Trans 35S-methionine/cysteine for use in cell association studies. No evidence was found to indicate the presence of a receptor for tTrx on either MCF-7 or U-937 cells. Findings suggest that a low level of non-specific binding of tTrx to these cell lines rather than a classical ligand-binding mechanism occurs thus suggesting the absence of a cell surface receptor for tTrx. The role that Trx may play in the cellular responses to oxidative stress was also investigated. The chemical oxidants hydrogen peroxide (H2O2) and diamide were used to establish an in vitro model of oxidative stress for the choriocarcinoma cytotrophoblast cell line JEG-3. Cellular function was assessed in terms of membrane integrity, metabolic activity and the ability to synthesis new DNA following exposure to these oxidants. Results indicated that both agents were capable of causing cells to undergo oxidative stress without inducing immediate apoptosis or necrosis. Initially, JEG-3 cells exposed to 38μM or 75μM H2O2 or 100μM diamide were shown to display altered cell metabolism and DNA synthesis without loss to cell viability or membrane integrity. Cells were also shown to be capable of some short-term recovery but later lapsed into a more stressed state. Expression levels of Trx were studied to determine whether this type of chemical stress caused a change in intercellular protein levels. Both cELISA and western blotting results indicated that only cells exposed to 100μM diamide displayed any significant increase in Trx protein levels after 6 or 8hrs exposure to the oxidant. Further studies over a longer time-frame were also performed. These found that when JEG-3 cells were exposed to 18μM H2O2 or 200μM diamide over 12-48hrs, a positive correlation between increasing endogenous Trx protein levels and a decline in cell proliferation was observed. Cytotrophoblast cells, which are responsible for implantation and placentation, are susceptible to oxidative stress in vivo and their anti-oxidant capacity is fundamental to the establishment of pregnancy. The findings obtained during these studies suggest that Trx plays a role in this process.
Thesis (Masters)
Master of Philosophy (MPhil)
School of Health Sciences
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5

Lin, Yi Hsuan. "Effect of Inorganic Carbon on the Microbial Community Structures of Nitrite-Oxidizing Bacteria". OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/554.

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Nitrification, a key step in biological nitrogen removal processes, is the oxidation of ammonia into nitrate performed by ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) under aerobic condition. Researchers have focused on factors affecting the performance of nitrification for decades, but the inorganic carbon limitation on nitrification had been neglected. However, the increase in nitrogen in wastewater has increased the need to evaluate and improve our understanding of this limitation. In a previous research, the hypothesis that different inorganic carbon concentrations would enrich different AOB populations has been examined. In this study, the focus was on the effect of inorganic carbon concentration on NOB, which has a close relationship with AOB. Two 5L lab–scale continuous–flow stirred tank reactors (CSTR) were operated to evaluate the nitrification performance and microbial ecology of nitrifier populations acclimated under inorganic carbon sufficient (high–IC) and limited (low–IC) conditions for approximately 700 days. During the operation period, both bioreactors were able to maintain satisfactory nitrification efficiency higher than 95% at an influent ammonium concentration of 250 mg–N/L. Nitrate was the major end product and no significant nitrite accumulation was observed. To evaluate the effects of inorganic carbon on NOB community structures, cloning/sequencing and real–time PCR were applied to target and quantify the two common NOB genera, Nitrospira and Nitrobacter, as no molecular probe targeting all known NOB is available presently. The results showed that these two genera were both found in the two reactors. Nitrospira was the dominant NOB population in the high–IC bioreactor, while Nitrobacter was dominant in the low–IC one after one year acclimation. Kinetic analysis revealed that NOB enriched in the two reactors have different kinetic performances. However, IC concentration did not show a significant impact on the nitrite oxidizing kinetics of NOB in the batch tests.
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6

Hsu, Zing-Ming, i 許智銘. "Growth of Ga2O3 on n-GaN by Photoelectrochemical Oxidization". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/78030084232869908542.

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碩士
大葉大學
電機工程學系碩士班
94
Oxide of semiconductor could be a part of device structure, like MOS structure, or a layer to provide the surface passivation. With the great progress of the applications of GaN on optoelectronic devices and high temperature/high power electronics, GaN is more attractive than ever. Dry or wet thermal oxidation process is a mature technology for the oxidation of silicon. However, it has only limited success on GaN. High temperature process will deteriorate the crystal quality of GaN and further degrade the performance of devices. In this thesis we studied the growth of Ga2O3 oxide film on n-type GaN by photoelectrochemical oxidization (PECO) technique. The first, in order to enhance the oxidation rate, we tried to conduct the wet oxidation of GaN in various concentrations of phosphorus acid (H3PO4) solutions with 0, 1, or 2V bias. The tested samples were examined with α-step profiler、scanning electron microscopy (SEM) and energy dispersive spectrometer (EDX) to evaluate the oxide thickness、the surface morphology and the composition of oxide, respectively. We obtained that the growth rates of oxide with 0.0032M phosphorus acid solution were 224nm/h, 2.8μm/h, and 5μm/h for 0, 1, or 2V bias, respectively. Also, the oxygen atom ratio in the oxide increased with bias from EDX analysis. Hence, an external bias could be used to enhance the oxidation rate of GaN and the growth rate of oxide. In order to evaluate the properties of oxides, the PECO grown oxides were applied to the fabrication of MOS on GaN. Both I-V and C-V measurements were used to characterize the MOS devices. During process, we found the as-grown oxide must be annealed under high temperature to prevent the attack of chemicals during process.
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Lee, Chin-Yang, i 李金揚. "A STUDY OF ADDING AMMONIUM MOLYBDATE IN ANODIC OXIDIZATION PROCESS". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/43426173956837754648.

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碩士
大同大學
化學工程研究所
89
The main purpose of this research is to study the properties of the films obtained by pulsed current anodizing on aluminum in sulfuric acid electrolyte with ammonium molybdate. The operating conditions are constant voltage 5~20V, pulsed current of 1~5A/dm2 with frequency of 100 Hz and duty cycle of 80 % at bath temperature of 10~50℃ for 30 minutes anodizing duration time. Finally, the specimens were sealed in the solution of 20g/L nickel fluoride for 20 minutes at room temperature. The film thickness is linearly proportional to the anodizing temperature and current density, and is almost not affected by the addition of ammonium molybdate, but the film microhardness increases greatly. Meanwhile, a film of better thickness and microhardness can be obtained under the condition of constant current density than constant voltage. From SEM photos, it can be deduced that the lower temperature below 20℃ will make the pores of the anodic oxide film become smaller and distributed closely. It’s good for film hardness. Besides, the EDS analytic chart reveals that the molybdenum atom is found in the anodic film, this is one of the reasons to increase the microhardness of the anodic film. From experimental results, it can be shown that the microhardness of the anodic film can be greatly improved by adding molybdenum into the sulfuric acid solution. Under the conditions of 20℃ anodizing temperature, 0.025mol/L ammonium molybdate and current density of 8A/dm2 for 30 minutes anodizing duration, the maximum anodic film microhardness of 623Hv can be obtained.
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Chen, Wen-I., i 陳雯怡. "The diversity of ammonia oxidization genes in activated sludge systems". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/kf4cpt.

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碩士
中原大學
土木工程研究所
93
Ammonia oxidization bacterium are not easy to grow, according to their shapes, it’s hard to distinguish the differences from each species. Autotrophic AOB (ammonia oxidization bacterium) not only grow slowly, but also difficultly culture. To realize the diversity of ammonia oxidization bacterium cultured in sequencing batch membrane bioreactor (SBMBR bioreactor) in laboratory. This research uses amoA gene which is ammonia oxidization bacterium’s special function to combine molecular biological technology and to realize the diversity of AOB, Aim directly at analysis of 16S rDNA gene in activated sludge, to know bacterium’s spreading. According to the research , amoA gene only has two copy numbers, therefore, PCR is not easy to amplify, it will obtain strength single in second time of PCR. Using amoA primer to obtain PCR products with autotrophic culture, then compare the sequence, it shows that the family relation is closed to amoA gene of Nitrosmonas oligotropha. Next, compare the sequence of 16S rDNA gene of ammonia oxidization bacteria, discovered genius of Bacillus has nitrification and denitrification at the same time. Activated sludge and biological membrane are cloned and classify amoA gene into two groups by DGGE and RELP. One of the two groups is closed to Nitrosmonas europaea and the other is closed to Nitrosmonas oligotropha. Therefore, the amoA gene of ammonia oxidization bacterium gathers around Nitrosomonas genius in SBMBR bioreactor. The result of comparison of 16S rDNA gene by SBMBR bioreactor, it shows part of genes have denitrifying. On the contrast, 16S rDNA gene by gene cloning , it shows that part of genes have denitrifying and phosphorus release. This experiment matches the result of SBMBR bioreactor. In addition, the percentage of AOB is pretty lower from cultured numbers. The reason perhaps the AOB are not easy to cultivate and they have lower percentage in SBMBR bioreactor. Consequenly, the result that mentions above leads to get lower ammonia oxidization bacterium in tradition cultivated way.
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Liu, Yen-Cheng, i 劉衍昌. "Shrinking Gate Length by Oxidization Treatment in GaN/AlGaN/GaN HEMTs". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/96697322278637720041.

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碩士
國立成功大學
微電子工程研究所碩博士班
97
In this work, we preset an effective method of shrinking gate length by oxidization gate metal. The oxidization method’s advantages are fast, low cost, simple and effective increase devices performance. The gate metal process to be use metal different coefficient of oxidization by oxidization treatment, and the GaN has excellent chemical and physics stability, so it is difficult to be oxidized by the H2O2. We can oxidize the gate metal by using general H2O2 after we finish the gate metal’s process. Because the different coefficient of oxidization of Ni/Au gate meal, it is effective to shrink gate length of metal below the gate.Experiment results indicate that the oxidization process can improve devices DC and microwave characteristics: the saturation drain current density IDSS0 (305mA/mm -> 322 mA/mm), the maximum extrinsic transconductance gm,max (99 mS/mm -> 114mS/mm), the pinch-off voltage Vpinch-off (–3.2 V -> –3 V), the unity current gain cut-off frequency fT (11.1 GHz -> 14.4 GHz), the maximum oscillation frequency fmax (14.6 GHz -> 17.4 GHz), the minimum noise figure NFmin (1.902 dB -> 1.384 dB) and the power-added-efficiency (P.A.E.) (24.5 % -> 31.1 %).
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Yi, Chou Liang, i 周良一. "The Preparation of Macroporous Catalysts and the Study of Oxidization Reaction". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12659056605865940139.

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Streszczenie:
碩士
南台科技大學
化學工程與材枓工程系
97
In this study, the macroporous polymeric supports were synthesized by the suspension polymerization and that were applied on the oxidation of cyclohexane. The macroporous polymers were composed by glycidyl-methacrylate and styrene with divinylbeneze as cross-linking agents. Iooctane, N, N-dimethylacetamide, cyclohexanol, cyclohexanone were chosen as a porogen to study the porosity formation of polymer particle. Furthermore, the macroporous polymers were modified by iminodiacetic acid via ring-opening reaction with the epoxy function on the support to obtain the chelating copolymer support. Among those porous polymer supports, the maximum specific surface area, pore volume and pore diameter could reach to 402.65 m2/g, 0.88 cm3/g and 10.2 nm, respectively. In addition, the cobalt(II) chelated capacity of porous polymer could reach to 60.22 mg Co2+/g polymer . On the other hands, the high surface area catalysts in the oxidization reaction could get the high conversion of cyclohexance oxidation with short induction time. In addition, the selectivity of cyclohexanone and cyclohexanol could arrive 91 % on 4.9 % conversion. The increased the reaction pressure could increase the oxidation conversion, but do not promote the selectivity of the product. Raised the reaction temperature could effectively increase the oxidation conversion of cyclohxane, however, higher reaction temperature would make the cyclohexanol and cyclohexanone oxidation to adipic acid. As the air purge rate increased, the conversion of oxidaiton reaction would increase. Notable, added the benzaldehyde as the co-catalyst could enhance the oxidation conversion about 5%.
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Książki na temat "Oxidization"

1

Nakano, Hiroshi. DC-SQUIDs fabricated by shapes of sputtering deposition at step edge and anodic oxidization. Fukuoka, Japan: [Kyushu University Research Institute of Fundamental Information Science, 1986.

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2

Kirchman, David L. Degradation of organic matter. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789406.003.0007.

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The aerobic oxidation of organic material by microbes is the focus of this chapter. Microbes account for about 50% of primary production in the biosphere, but they probably account for more than 50% of organic material oxidization and respiration (oxygen use). The traditional role of microbes is to degrade organic material and to release plant nutrients such as phosphate and ammonium as well as carbon dioxide. Microbes are responsible for more than half of soil respiration, while size fractionation experiments show that bacteria are also responsible for about half of respiration in aquatic habitats. In soils, both fungi and bacteria are important, with relative abundances and activity varying with soil type. In contrast, fungi are not common in the oceans and lakes, where they are out-competed by bacteria with their small cell size. Dead organic material, detritus, used by microbes, comes from dead plants and waste products from herbivores. It and associated microbes can be eaten by many eukaryotic organisms, forming a detritus food web. These large organisms also break up detritus into small pieces, creating more surface area on which microbes can act. Microbes in turn need to use extracellular enzymes to hydrolyze large molecular weight compounds, which releases small compounds that can be transported into cells. Fungi and bacteria use a different mechanism, “oxidative decomposition,” to degrade lignin. Organic compounds that are otherwise easily degraded (“labile”) may resist decomposition if absorbed to surfaces or surrounded by refractory organic material. Addition of labile compounds can stimulate or “prime” the degradation of other organic material. Microbes also produce organic compounds, some eventually resisting degradation for thousands of years, and contributing substantially to soil organic material in terrestrial environments and dissolved organic material in aquatic ones. The relationship between community diversity and a biochemical process depends on the metabolic redundancy among members of the microbial community. This redundancy may provide “ecological insurance” and ensure the continuation of key biogeochemical processes when environmental conditions change.
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Części książek na temat "Oxidization"

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Dehong, Xia, i Xu Kuangdi. "Oxidization Loss Rate". W The ECPH Encyclopedia of Mining and Metallurgy, 1–2. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0740-1_287-1.

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Zhang, Yuyang. "The Oxidization and Catabolism of Ascorbate". W Ascorbic Acid in Plants, 45–48. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4127-4_4.

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Epshtein, S. A., E. L. Kossovich, N. N. Dobryakova i L. A. Obvintseva. "NEW APPROACHES FOR COAL OXIDIZATION PROPENSITY ESTIMATION". W XVIII International Coal Preparation Congress, 483–87. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40943-6_73.

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Liang, Bo, Fenglan Han, Jintao Wang i Qi Luo. "Raman Spectroscopy of Graphene by the Method of Oxidization-Reduction". W Springer Proceedings in Energy, 569–77. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0158-2_59.

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Bonnefont-Rousselot, D., B. Arrio, J. Catudioc i L. Packer. "Oxidization of human low density lipoproteins measured by Laser Doppler electrophoresis". W Oxidative Stress, Cell Activation and Viral Infection, 165–71. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-7424-3_16.

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Groom, Amelia, i M. Ty. "Enduring Ornament". W Cultural Inquiry, 121–41. Berlin: ICI Berlin Press, 2020. http://dx.doi.org/10.37050/ci-17_06.

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This is an essay about rust. Iron usually plays the part of strength, stubbornness, and impenetrability, but rust registers the dimension of time in the material, reminding us that it always carries the potential for its own decomposition. While great expense is incurred to stave off iron’s oxidization, we read the uselessness that rust precipitates as an interruption of the instrumental logics that sustain racial capitalism. Looking to the rusted ring that became Elsa von Freytag-Loringhoven’s Enduring Ornament (1913), we consider how the discarded and defunctionalized lend themselves to ornamental redeployment. The essay then turns to works by the contemporary American artists David Hammons and Andrea Fraser, both of which transform Richard Serra’s rusty steel sculptures into a backdrop for fleeting gestures of impromptu reclamation. Attending to questions of susceptibility and monumental weathering, these reflections look to rusty leakages that play out the impossibility of refusing the environment. Rust, we suggest, is a material archive of exposure that does not keep itself, but flakes apart and seeps away.
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Li, Shuoshuo, i Haiwen Luo. "A Novel High-Strength Oxidization-Resistant Press Hardening Steel Sheet Requiring No Al–Si Coating". W TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings, 505–13. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36296-6_47.

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Wang, Yubi, Li Zhang, Bingbing Liu, Bei Zhang i Yuanbo Zhang. "Characterization on Behavior of Al During the Oxidization Roasting Process of Polymetallic Ferruginous Manganese Ores". W Characterization of Minerals, Metals, and Materials 2021, 101–9. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65493-1_10.

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Wang, Zhihua, Kefa Cen, Junhu Zhou i Jianren Fan. "Application and Economic Analysis of the Multi-Pollutants Removal Technology Incorporated with Ozone Oxidization and Alkali Solution Adsorption". W Advanced Topics in Science and Technology in China, 95–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43514-4_5.

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Burgot, Jean-Louis. "Oxidizations with Permanganate, Dichromate, and Ceric Ions". W Ionic Equilibria in Analytical Chemistry, 377–403. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-8382-4_20.

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Streszczenia konferencji na temat "Oxidization"

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Sun, Guocheng, Shi Lin, Xu Wang i Liutao Chen. "Study of Pre-Oxidization Law and Fretting Wear Resistance of CZ2 Alloy Cladding". W 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-93804.

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Abstract In the core of pressurized water nuclear reactor, coolant flow-induced vibration of Grid to rod fretting (GTRF) is the dominant factor leading to fuel rod damage. pre-oxidization treatment of zirconium cladding forming a ceramic layer on its surface is the main way to reduce the GTRF wear. In this paper, the growth law of CZ2 alloy cladding pre-oxidization zirconia ceramic layer formed in air was studied. The micro-hardness and elastic modulus of CZ2 alloy cladding and zirconia ceramic layer were measured by in-situ nano-mechanical testing system., while the morphology of these pre-oxidization zirconia ceramic layer were observed by scanning electron microscope. The fretting wear properties of the pre-oxidization zirconia ceramic layer were studied by high temperature and high pressure fretting wear tests. The results show that the pre-oxidization zirconia ceramic layer growth law of CZ2 alloy cladding at 560°C and 600°C is consistent, and the pre-oxidization zirconia ceramic layer are compact and crack-free. The pre-oxidization zirconia ceramic layer can improve the fretting wear resistance of CZ2 alloy cladding at high temperature and high pressure, and the maximum wear depth were reduced by 80%.
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Ying, Fu. "Oxidization of Polymer Si-Fe Coagulant". W 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5516222.

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Otake, Shiro, Masahiro Nishimura i Ken-ichiro Sugiyama. "Oxidization and Combustion in Liquid Sodium Droplet". W 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75250.

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Liquid sodium is used as the coolant of the fast reactor because of its high thermal conductivity. It is superior as thermal medium in spite of high chemical reactivity with oxygen. In many cases, the combustion starts after forming the dendrite oxides on its reaction surface in oxygen atmosphere. This fact indicates that sodium doesn’t ignite and burn easily unless dendrite oxides are formed. The understanding of the formation mechanism of the dendrite oxides helps us to obtain the optimum handling of leftover non-burning sodium after the accident. However, experimental knowledge to understand the mechanism of combustion is still insufficient. The purpose of this study is to clarify the oxidization behavior of a liquid sodium droplet precisely [1]. The reason why we choose the droplet form is derived from the fact that the reaction surface can be easily observed. The experiment was carried out in a glove box filled with argon gas. A single sodium droplet was made at the tip of the nozzle and preheated at the experimental temperature. The oxidization started by supplying the gas mixture of nitrogen and oxygen. The oxygen concentration of the gas mixture and the initial sodium temperature were adopted as experimental parameters, 4% ∼ 20% O2 and 200°C ∼ 500°C respectively. When the gas mixture was supplied, the droplet surface was covered with a white oxide layer. Gradually, the dendrite oxides appeared on the lower side of the sodium droplet, and the aerosol was generated in the vapor phase area. Then, the dendrite oxides on the surface sank in the droplet and the surface became smooth again. Finally the sodium droplet was encompassed by orange flame. The dendrite oxides were found to grow bigger at the first reaction period. It is suggested that the dendrite oxides have a porous structure and the liquid sodium in the droplet is drawn up to their tips by capillary force. Then the sodium oxidization occurs at the tips. The sodium droplet covered by dendrite oxides was also found to be heated up and the dendrite oxides sank into the droplet due to the high oxygen solubility and be finally burned due to the attainment of its ignition temperature as the second reaction period. The heat generation of oxidization as the first reaction period contributed to the combustion phenomena.
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Sato, M., H. Kikuchi i K. Kobayashi. "Effects of interface oxidization in ferromagnetic tunnel junctions". W IEEE International Magnetics Conference. IEEE, 1999. http://dx.doi.org/10.1109/intmag.1999.837717.

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Zhang, Ruolin, Ying Tang, Xu Wang, William Cao i Pradeep Rai. "A Study of Copper Oxidization Mechanism at Metal Interface". W 2021 22nd International Conference on Electronic Packaging Technology (ICEPT). IEEE, 2021. http://dx.doi.org/10.1109/icept52650.2021.9568136.

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Peng, Yanyan, i Chunfang Cai. "Thiadiamondoids as Proxies to Reflect Oil Cracking and Oxidization Extents". W 29th International Meeting on Organic Geochemistry. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902776.

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Muramatsu, Mikiya, G. H. Guedes, Kiyofumi Matsuda i Thomas H. Barnes. "Study of oxidization process in real time using speckle correlation". W San Dieg - DL Tentative, redaktor Chander P. Grover. SPIE, 1991. http://dx.doi.org/10.1117/12.51129.

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Imholte, Mike. "Oxidization, Contamination, and Automation for High Temperature Verification of Thermocouples". W NCSL International Workshop & Symposium. NCSL International, 2018. http://dx.doi.org/10.51843/wsproceedings.2018.25.

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During the process of verifying K type thermocouples at high temperatures, the sheath turns gray or breaks down and flakes off. This creates a risk of contaminants and damage to product in a vacuum braze furnace. The cost of recertifying the thermocouples and cleaning of the furnace block when a thermocouple sheath breaks down is high. After working through this process for many years, I came up with a new furnace setup that reduces the potential for contamination of product. This paper will explain the process, verification station set up, tools and materials used to reduce oxidization of the sheath material. We have updated from an inconel isotheral block furnace to an alumina isotheral block furnace. This eliminates the contamination to the reference PRT being it also has an alumina sheath. The why is when an alumina sheath is contaminated with inconel the OEM will not calibrate the PRT because of possible contamination to the silver fixed point cell. The automation improvement has reduced cost in labor and down time.
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Shi, Shaoping, William A. Rogers, David A. Berry, Dushyant Shekhawat, Todd H. Gardner i Graham Goldin. "Numerical Simulation of Partial Oxidization Processing of Diesel for Fuel Cells". W ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45141.

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The application of a reduced, fuel-rich chemistry mechanism for n-Heptane partial oxidation was valid over the temperature range from 900 K to 1200 K and at the O/C ratio of 1.57. In this work, n-Heptane was utilized as a single fuel representative for diesel fuel to quantify CFD – Chemistry interation. The turbulence-reaction model is one of the standard combustion models developed in FLUENT, a commercial CFD (Computational Fluid Dynamic) software package. In this model, n-Heptane reduced chemistry mechanisms were coupled with the multi-dimensional CFD solver. The interaction between the chemical reactions and turbulence has been considered. In this paper, some preliminary results are presented and comparisons between the experiments and the simulations are made.
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Torabi, Farshid, Weiguo Luo i Suxin Xu. "Chemical Degradation of HPAM by Oxidization in Produced Water: Experimental Study". W SPE Americas E&P Health, Safety, Security and Environmental Conference. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/163751-ms.

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Raporty organizacyjne na temat "Oxidization"

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V.K. Mathur. MERCURY OXIDIZATION IN NON-THERMAL PLASMA BARRIER DISCHARGE SYSTEM. Office of Scientific and Technical Information (OSTI), luty 2003. http://dx.doi.org/10.2172/839988.

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