2011 National Postgraduate Conference最新文献_第4页

Modelling and characterization of acoustic wave propagation in seabed 声波在海底传播的建模与表征

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136426

R. A. A. Khan, G. A. Ellis

引用次数: 0

Application of discriminant analysis to phase versus offset data in detection of resistivity contrast 判别分析在电阻率对比检测中相位与偏移数据的应用

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136446

M. Abdulkarim, A. Shafie, R. Razali, W. Ahmad

{"title":"Application of discriminant analysis to phase versus offset data in detection of resistivity contrast","authors":"M. Abdulkarim, A. Shafie, R. Razali, W. Ahmad","doi":"10.1109/NATPC.2011.6136446","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136446","url":null,"abstract":"Sea-Bed Logging (SBL) is an application of the marine Controlled-Source Electro-Magnetic (CSEM) method to detect the presence of hydrocarbon layer beneath the sea bed. This method depends on the large resistivity contrast between the hydrocarbon reservoir, and the surrounding layers of different resistivity. Thus, the ability to detect the presence of different resistive layers is important in processing CSEM data. In this paper, discriminant analysis is applied to simulated data aimed at classifying them into two groups based on the resistivity contrast. Discriminant function analysis is a statistical technique used to predict membership in two or more mutually exclusive groups. Two types of data, with (1000Ω) and without (1Ω) hydrocarbon was used to develop the discriminant model. Wilks' lambda is used to test the significance of the discriminant function as a whole, while measure of F-value for a variable is used to indicate its statistical significance in the discrimination between groups and extent to which that variable makes a unique contribution to the prediction of group membership. The results obtained imply that discriminant analysis has potential in detecting the contrast.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"114 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83986045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of area efficiency constraint onto CO2 emission reduction targeting for existing plant via HEN retrofit and fuel switching 区域效率约束对现有电厂通过HEN改造和燃料转换实现二氧化碳减排目标的影响

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136261

Tiew Boon Jin, S. Mahadzir

引用次数: 0

Microstructure parameter estimation in permeability calculation of well cement during early hydration by a simple particle expansion model 基于简单颗粒膨胀模型的井固井早期水化渗透率微结构参数估算

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136530

S. Ridha, S. Irawan, B. Ariwahjoedi

引用次数: 4

A framework for designing postgraduate research supervision knowledge management systems 研究生科研指导知识管理系统设计框架

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136310

King-Tak Yew, W. Ahmad, J. Jaafar

引用次数: 11

Multispectral and thermal images for acne vulgaris classification 寻常痤疮的多光谱和热图像分类

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136336

Jawad Huamyun, A. S. Malik

引用次数: 6

Epoxidation of Fatty Acid Methyl Esters derived from Jatropha oil 从麻疯树油中提取脂肪酸甲酯的环氧化反应

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136253

M. Mushtaq, I. B. Tan, C. Devi, S. Majidaie, M. Nadeem, Susan Y. C. Lee

{"title":"Epoxidation of Fatty Acid Methyl Esters derived from Jatropha oil","authors":"M. Mushtaq, I. B. Tan, C. Devi, S. Majidaie, M. Nadeem, Susan Y. C. Lee","doi":"10.1109/NATPC.2011.6136253","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136253","url":null,"abstract":"Fatty Acid Methyl Esters (FAMEs) from transesterification of Jatropha oil were obtained by both acid and base catalyzed transesterification reactions. These FAMEs were epoxidized in or without solvent by either peroxyformic acid or peroxyacetic acid, formed in situ by 30% hydrogen peroxide. n-hexane was used as solvent. Detailed study regarding effects of type and concentration of organic acid used in and without solvent at temperatures 50°C, 60°C and 69°C is presented here. Molar ratio of FAMEs: H2O2 was fixed at 1:3.5 and reaction time was fixed at 6 hours. The formic acid-FAMEs molar ratio was (FAMEs: Formic acid) 1:0.45, while for acetic acid molar ratio was (FAMEs: Acetic acid) 1:0.60. For formic acid, it was found that without solvent, the conversion was 79% while in solvent; it was found that the highest conversion (83%) was obtained at a temperature of 60°C. When acetic acid as oxygen carrier was used, it required 1.5% H2SO4 as catalyst for the reaction in solvent to give maximum conversion of 71%. Without solvent the conversion was 74% at 69°C. The products were analyzed by NMR, GC-MS, FT-IR and volumetric analyses for qualitative and quantitative determinations.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"21 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77092402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Microwave planar triple-mode resonator filter 微波平面三模谐振器滤波器

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136425

C. Sovuthy, W. P. Wen

引用次数: 4

Characterization of slaughtered and non-slaughtered goat meat using low frequency 用低频表征屠宰和非屠宰山羊肉

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136342

Roaa A. Mohmmad, T. Ibrahim, M. Begam

引用次数: 1

Synthesis and characterizations of Y3Fe5O12-MWCNTs composites for SBL application SBL用Y3Fe5O12-MWCNTs复合材料的合成与表征

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136451

M. Akhtar, N. Yahya, Nadeem Nasir, M. Kashif

{"title":"Synthesis and characterizations of Y3Fe5O12-MWCNTs composites for SBL application","authors":"M. Akhtar, N. Yahya, Nadeem Nasir, M. Kashif","doi":"10.1109/NATPC.2011.6136451","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136451","url":null,"abstract":"Sea bed logging is a new technology being implemented for deep target exploration. In seabed logging, the magnitude of electromagnetic (EM) wave for detection of hydrocarbon reservoir is very important and still remained challenge. New Al transmitter with (Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> with and without MWCNTs) magnetic feeders was used in a marine scaled tank to enhance the magnetic field strength. Experiments were done in marine lab scale tank to replicate the real seabed environment. Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> with and with out multiwall carbon nano tubes (MWCNTs) were synthesized by using sol gel-self combustion hybrid method. Samples were sintered at 550°C, 750°C and 1050°C to get the required characteristics of the garnet nanoparticles. Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> samples with and without MWCNTs were characterized by using XRD, RAMAN, FESEM and Impedance network analyzer. X-ray diffraction results revealed that the best Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> phase was appeared at the sintering temperature of 1050°C. Nanoparticles sizes ranging from 70 to 110 nm were obtained by using sol gel-self combustion hybrid method. Raman results also demonstrate the confirmation of garnet structure of Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> at sintering temperature of 1050°C. Field emission scanning electron microscopy (FESEM) was used to see the morphology of Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> with and with out MWCNTs composites. Magnetic characterization results illustrates that Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> with MWCNTs at 1050°C has higher Initial permeability (33.302) and high Q-factor (55.104), where as low loss factor (0.0003) was also investigated for Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf> — MWCNTs composites. It was observed that by using Y<inf>3</inf>Fe<inf>5</inf>O<inf>12</inf>-MWCNTs polymer composites toroid as magnetic feeders resulted 210% increase in magnetic field strength.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"30 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82776530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1