Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136456
Nurhidaya Soriadi, N. M. Mohamed, F. Hussin
The demand for accurate, fast response hydrogen detection is critical in several industries especially in medical diagnostics. Titania nanotubes used as the sensing element, were fabricated by anodization technique followed by annealing at 500°C. Nanotubes produced was found to have pore size ranging from 38 nm to 48 nm for inner diameter, 57 nm to 73 nm for outer diameter with applied anodization voltage of 10 V, 12 V and 15 V. Titania nanotubes film was then integrated into a sensor configuration and tested for its sensing properties. The sample of titania nanotubes with the smallest pore size was found to exhibit the highest sensitivity for detection of hydrogen with concentration as low as 10 ppm. The sensitivity of the hydrogen sensor was also found to be higher when the sensor is operated at temperature 300°C.
{"title":"Development of TiO2 nanotubes for hydrogen sensing application","authors":"Nurhidaya Soriadi, N. M. Mohamed, F. Hussin","doi":"10.1109/NATPC.2011.6136456","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136456","url":null,"abstract":"The demand for accurate, fast response hydrogen detection is critical in several industries especially in medical diagnostics. Titania nanotubes used as the sensing element, were fabricated by anodization technique followed by annealing at 500°C. Nanotubes produced was found to have pore size ranging from 38 nm to 48 nm for inner diameter, 57 nm to 73 nm for outer diameter with applied anodization voltage of 10 V, 12 V and 15 V. Titania nanotubes film was then integrated into a sensor configuration and tested for its sensing properties. The sample of titania nanotubes with the smallest pore size was found to exhibit the highest sensitivity for detection of hydrogen with concentration as low as 10 ppm. The sensitivity of the hydrogen sensor was also found to be higher when the sensor is operated at temperature 300°C.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"1 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":"91310423","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136389
A. Iqbal, V. Jeoti
In this work, a finite element method (FEM) based solution of parabolic wave equation (PWE) is presented to model the radiowave propagation in evaporation duct. One dimensional piece-wise linear polynomial functions are used to discretize the height operator. By applying this discretization process, PWE reduces to an ordinary differential equation (ODE). Later, ODE is solved by Crank-Nicolson method and a marching algorithm like Split-step Fourier Transform method (SSFM) has been developed. Parametric refractivity M-profile model is used for the generation of vertical modified refractivity profile. To handle the atmosphere effects accurately, vertical refractivity profile has been assigned to every element. Finally, results are compared with SSFM for different environment conditions, which give a good justification. And results show that the proposed method can be an alternative to SSFM.
{"title":"Numerical evaluation of radiowave propagation in evaporation ducts using FEM","authors":"A. Iqbal, V. Jeoti","doi":"10.1109/NATPC.2011.6136389","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136389","url":null,"abstract":"In this work, a finite element method (FEM) based solution of parabolic wave equation (PWE) is presented to model the radiowave propagation in evaporation duct. One dimensional piece-wise linear polynomial functions are used to discretize the height operator. By applying this discretization process, PWE reduces to an ordinary differential equation (ODE). Later, ODE is solved by Crank-Nicolson method and a marching algorithm like Split-step Fourier Transform method (SSFM) has been developed. Parametric refractivity M-profile model is used for the generation of vertical modified refractivity profile. To handle the atmosphere effects accurately, vertical refractivity profile has been assigned to every element. Finally, results are compared with SSFM for different environment conditions, which give a good justification. And results show that the proposed method can be an alternative to SSFM.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"5 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":"89680129","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136280
Abdel Samed M. Adam, M. I. Abdul Mutalib, S. Mahadzir
The paper presents a targeting method for process heat exchanger networks (HENs) design in the context of total sites. The method is based on a simultaneous optimization framework for the HENs utility cost and utility systems operating cost. Instead of the standalone HEN capital-energy costs trade-off, the method utilizes the trade-off between the HEN capital cost and the total utility systems operating cost. The total utility systems include steam and non-steam utility systems within the site. The energy cost of the HEN is replaced by the total utility systems operating cost to avoid explicit calculations of steam costs when targeting for HENs design. This enables handling the variability of steam costs with the steam utility loads and the minimum approach temperature, ΔTmin, of the HEN without assuming fixed steam costs as in the existing methods. The optimum ΔTmin is that corresponds to the minimum total cost which involves the HEN capital cost and total utility systems operating cost. The simultaneous optimization framework combines the optimization of utility systems using Mixed-Integer Linear Programming (MILP) with targeting for the HENs design using Pinch Analysis. The method was demonstrated using an example total site.
{"title":"Targeting for process HENs design in the context of total sites","authors":"Abdel Samed M. Adam, M. I. Abdul Mutalib, S. Mahadzir","doi":"10.1109/NATPC.2011.6136280","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136280","url":null,"abstract":"The paper presents a targeting method for process heat exchanger networks (HENs) design in the context of total sites. The method is based on a simultaneous optimization framework for the HENs utility cost and utility systems operating cost. Instead of the standalone HEN capital-energy costs trade-off, the method utilizes the trade-off between the HEN capital cost and the total utility systems operating cost. The total utility systems include steam and non-steam utility systems within the site. The energy cost of the HEN is replaced by the total utility systems operating cost to avoid explicit calculations of steam costs when targeting for HENs design. This enables handling the variability of steam costs with the steam utility loads and the minimum approach temperature, ΔTmin, of the HEN without assuming fixed steam costs as in the existing methods. The optimum ΔTmin is that corresponds to the minimum total cost which involves the HEN capital cost and total utility systems operating cost. The simultaneous optimization framework combines the optimization of utility systems using Mixed-Integer Linear Programming (MILP) with targeting for the HENs design using Pinch Analysis. The method was demonstrated using an example total site.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"222 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":"75172362","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136463
Kanagaswarran Citalingam Mudliar, M. A. Shoushtari, Abdelrahman S. Bishari
Two-phase flow is said as the flow of two phases simultaneously in a pipe. Two-phase flow occurs in both production and injection wellbores. In injection wellbores, the two-phase moves downward and so it is known as downward flow. The complexity of two-phase flow starts due to the present of flow patterns in the pipe. The flow patterns vary due to the density and viscosity differences between the phases which contribute to the difference in velocity of both phases. The geometry of the well is another factor which donates to the difference in flow pattern. The simultaneous flow of these two-phases creates a pressure drop which is caused by the loss due to friction, acceleration and elevation. The friction lose is due to the friction between both the phases besides the friction between the phase and the pipe wall. This study is aimed at calculating the friction factor of two-phase flow in injection wellbores based on different flow patterns. The calculation of two-phase flow has been developed by various scholars and a few mechanistic models been published. Based on the available mechanistic models, Hasan and Kabir model has been chosen with the reason of accuracy and continuity.
{"title":"Study of two-phase flow friction factor in EOR injection wellbores","authors":"Kanagaswarran Citalingam Mudliar, M. A. Shoushtari, Abdelrahman S. Bishari","doi":"10.1109/NATPC.2011.6136463","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136463","url":null,"abstract":"Two-phase flow is said as the flow of two phases simultaneously in a pipe. Two-phase flow occurs in both production and injection wellbores. In injection wellbores, the two-phase moves downward and so it is known as downward flow. The complexity of two-phase flow starts due to the present of flow patterns in the pipe. The flow patterns vary due to the density and viscosity differences between the phases which contribute to the difference in velocity of both phases. The geometry of the well is another factor which donates to the difference in flow pattern. The simultaneous flow of these two-phases creates a pressure drop which is caused by the loss due to friction, acceleration and elevation. The friction lose is due to the friction between both the phases besides the friction between the phase and the pipe wall. This study is aimed at calculating the friction factor of two-phase flow in injection wellbores based on different flow patterns. The calculation of two-phase flow has been developed by various scholars and a few mechanistic models been published. Based on the available mechanistic models, Hasan and Kabir model has been chosen with the reason of accuracy and continuity.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"269 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77903777","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136424
M. R. Ahmad, M. Khir
This paper presents a research proposal on the electrostatic energy harvester utilizing Electret-based dielectric material on MEMS fabrication technique. An introduction of energy harvesting concept is covered along with the research objectives and methodology which include some literature reviews from the previous works of others. A simulation of the energy harvester model is carried out using the Matlab/Simulink as a proof of concept. Electret-based electrostatic energy harvester also called energy scavenger, is still new in the alternative energy concept, hence numerous opportunities to optimize the harvester's output power and efficiency will be explored and studied.
{"title":"Design, analysis and fabrication of Electret-based micro-electromechanical systems energy harvester","authors":"M. R. Ahmad, M. Khir","doi":"10.1109/NATPC.2011.6136424","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136424","url":null,"abstract":"This paper presents a research proposal on the electrostatic energy harvester utilizing Electret-based dielectric material on MEMS fabrication technique. An introduction of energy harvesting concept is covered along with the research objectives and methodology which include some literature reviews from the previous works of others. A simulation of the energy harvester model is carried out using the Matlab/Simulink as a proof of concept. Electret-based electrostatic energy harvester also called energy scavenger, is still new in the alternative energy concept, hence numerous opportunities to optimize the harvester's output power and efficiency will be explored and studied.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"10 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":"74284170","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136388
Yasir Salih, A. Malik, Zazilah May
This paper investigates depth estimation using monocular cues. Human visual system uses monocular cues such as texture, focus and shading for depth perception. Our proposed algorithm is based on segmenting the image into homogenous segments (superpixels), and then out of these segments we extract the ground segment and the sky segment. These two segments guide the depth estimation by providing region with maximum depth (sky) and region with minimum depth (ground). The reset of the segments will have a depth value between the sky and ground. This algorithm address image that contains sky and ground as a part of the image. The ground acts as a support for segments (eg. Trees, buildings) in the image, thus a vertical image segments tends to have similar depth as its ground support. On the other hand, some images are not supported by the ground but they are connected to it, therefore these segments will have depth value larger than its nearest ground pixels.
{"title":"Depth estimation using monocular cues from single image","authors":"Yasir Salih, A. Malik, Zazilah May","doi":"10.1109/NATPC.2011.6136388","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136388","url":null,"abstract":"This paper investigates depth estimation using monocular cues. Human visual system uses monocular cues such as texture, focus and shading for depth perception. Our proposed algorithm is based on segmenting the image into homogenous segments (superpixels), and then out of these segments we extract the ground segment and the sky segment. These two segments guide the depth estimation by providing region with maximum depth (sky) and region with minimum depth (ground). The reset of the segments will have a depth value between the sky and ground. This algorithm address image that contains sky and ground as a part of the image. The ground acts as a support for segments (eg. Trees, buildings) in the image, thus a vertical image segments tends to have similar depth as its ground support. On the other hand, some images are not supported by the ground but they are connected to it, therefore these segments will have depth value larger than its nearest ground pixels.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"23 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":"74446215","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136292
Aliza bt Sarlan, Rohiza bt Ahmad, Wan Fatimah bt. Wan Ahmad, P. Dominic
This research intents to study Information Technology (IT) utilization and business strategy at small, medium and enterprise (SMEs) private clinics in Malaysia. The research includes investigating the SMEs private clinics staff literacy level, IT utilization, their perception towards computerized system and their type of business strategy. Surveys have been conducted at 120 SMEs private clinics around Perak. The objective of this paper is to report on the research progress which briefly covers descriptive data analysis and result from data collection. Generally, most of SMEs private clinics have computer with internet access installed in their clinics but utilization is limited to their personal used only. It is also found that very small number of the SMEs having paperless system
{"title":"Information technology in SMEs private healthcare","authors":"Aliza bt Sarlan, Rohiza bt Ahmad, Wan Fatimah bt. Wan Ahmad, P. Dominic","doi":"10.1109/NATPC.2011.6136292","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136292","url":null,"abstract":"This research intents to study Information Technology (IT) utilization and business strategy at small, medium and enterprise (SMEs) private clinics in Malaysia. The research includes investigating the SMEs private clinics staff literacy level, IT utilization, their perception towards computerized system and their type of business strategy. Surveys have been conducted at 120 SMEs private clinics around Perak. The objective of this paper is to report on the research progress which briefly covers descriptive data analysis and result from data collection. Generally, most of SMEs private clinics have computer with internet access installed in their clinics but utilization is limited to their personal used only. It is also found that very small number of the SMEs having paperless system","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"43 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":"79080283","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136332
I. Baig, V. Jeoti, M. Drieberg
Orthogonal frequency division multiplexing (OFDM) is a strong candidate for 4G wireless networks, due to its high data rate and ability to combat frequency selective fading. OFDM may be combined with multiple-input multiple-output (MIMO) to increase the diversity gain and system capacity over the time-variant frequency-selective channels. However, a major drawback of MIMO-OFDM system is that the transmitted signals on different antennas might exhibit high peak-to-average power ratio (PAPR). The high PAPR leads to nonlinear distortion of the high-power-amplifier (HPA) and results in inter-carrier-interference (ICI) plus out-of-band radiation. In this paper, we present a Zadoff-Chu matrix transform (ZCMT) based space-time-block-coded (STBC) MIMO-OFDM system with reduced PAPR. Extensive simulations have been performed to analyze the PAPR of the proposed system with root-raised-cosine (RRC) pulse shaping. Simulation results show that, ZCMT precoded STBC MIMO-OFDM system has low PAPR when compared to both the Walsh-Hadamard transform (WHT) precoded STBC MIMO-OFDM systems and the conventional STBC MIMO-OFDM systems.
{"title":"A ZCMT precoding based STBC MIMO-OFDM system with reduced PAPR","authors":"I. Baig, V. Jeoti, M. Drieberg","doi":"10.1109/NATPC.2011.6136332","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136332","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) is a strong candidate for 4G wireless networks, due to its high data rate and ability to combat frequency selective fading. OFDM may be combined with multiple-input multiple-output (MIMO) to increase the diversity gain and system capacity over the time-variant frequency-selective channels. However, a major drawback of MIMO-OFDM system is that the transmitted signals on different antennas might exhibit high peak-to-average power ratio (PAPR). The high PAPR leads to nonlinear distortion of the high-power-amplifier (HPA) and results in inter-carrier-interference (ICI) plus out-of-band radiation. In this paper, we present a Zadoff-Chu matrix transform (ZCMT) based space-time-block-coded (STBC) MIMO-OFDM system with reduced PAPR. Extensive simulations have been performed to analyze the PAPR of the proposed system with root-raised-cosine (RRC) pulse shaping. Simulation results show that, ZCMT precoded STBC MIMO-OFDM system has low PAPR when compared to both the Walsh-Hadamard transform (WHT) precoded STBC MIMO-OFDM systems and the conventional STBC MIMO-OFDM systems.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"45 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79274309","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136461
S. M. Aslam, I. Saaid, I. Tan
Jatropha curcas contains extractable renewable non-edible oil which can be converted into surfactant suitable for oil recovery due to its hydrophilic property. Chemically, it contains high fatty acid components comprised primarily of oleic acid (44.7%) and linoleic acid (32.8%). In this study, a surfactant based on Jatropha oil was developed and tested against the interface tension reduction in the presence of alkaline, co-solvent and brine. Jatropha fatty acid was extracted via saponification process and neutralized with sodium hydroxide yielding sodium fatty acid. The performance of the synthesized surfactant was studied by measuring the interfacial tension (IFT) between the surfactant solution and crude oil, and its phase behaviour at reservoir temperature. Phase behavior is dependent upon the surfactant, alkaline and brine concentration, which are expressed as viscosity of the microemulsion. In order to mobilize residual oil trapped by capillary forces in oil reservoirs, many enhanced oil recovery (EOR) methods rely on reducing the oil-water IFT to extremely low values by using lowest surfactant concentration. Dulang crude oil used have high contain of wax and low acid value react with surfactant which contains fatty acid and reacts with the alkaline solution to produce in situ surfactant (ionized acid) which be able to lowers the oil-water IFT. The ionized acid is surface active and has a tendency to partition into the aqueous phase where it may form soap with sodium ions present in the surfactant and aqueous phase at a high ionic strength. The soap has a trend to partition into the oil phase. The removal of the ionic acids from the interface can cause low dynamic IFT. The result of this work indicates that the lowest IFT of surfactant concentration are distinctive for the different alkaline concentration. Significantly, the increase of surfactant concentration amplified the microemulsions. This enhanced the viscosity of the aggregated phase. Furthermore, makes the process economical for the best oil recovery.
{"title":"Development of alkaline — Surfactant flooding for oil recovery","authors":"S. M. Aslam, I. Saaid, I. Tan","doi":"10.1109/NATPC.2011.6136461","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136461","url":null,"abstract":"Jatropha curcas contains extractable renewable non-edible oil which can be converted into surfactant suitable for oil recovery due to its hydrophilic property. Chemically, it contains high fatty acid components comprised primarily of oleic acid (44.7%) and linoleic acid (32.8%). In this study, a surfactant based on Jatropha oil was developed and tested against the interface tension reduction in the presence of alkaline, co-solvent and brine. Jatropha fatty acid was extracted via saponification process and neutralized with sodium hydroxide yielding sodium fatty acid. The performance of the synthesized surfactant was studied by measuring the interfacial tension (IFT) between the surfactant solution and crude oil, and its phase behaviour at reservoir temperature. Phase behavior is dependent upon the surfactant, alkaline and brine concentration, which are expressed as viscosity of the microemulsion. In order to mobilize residual oil trapped by capillary forces in oil reservoirs, many enhanced oil recovery (EOR) methods rely on reducing the oil-water IFT to extremely low values by using lowest surfactant concentration. Dulang crude oil used have high contain of wax and low acid value react with surfactant which contains fatty acid and reacts with the alkaline solution to produce in situ surfactant (ionized acid) which be able to lowers the oil-water IFT. The ionized acid is surface active and has a tendency to partition into the aqueous phase where it may form soap with sodium ions present in the surfactant and aqueous phase at a high ionic strength. The soap has a trend to partition into the oil phase. The removal of the ionic acids from the interface can cause low dynamic IFT. The result of this work indicates that the lowest IFT of surfactant concentration are distinctive for the different alkaline concentration. Significantly, the increase of surfactant concentration amplified the microemulsions. This enhanced the viscosity of the aggregated phase. Furthermore, makes the process economical for the best oil recovery.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"8 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":"81934295","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}
Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136297
M. B. Adm, A. Said
As one of the most successful and interesting subject in computer vision and graphics domains, 3D face reconstruction has recently received significant attention, especially for the past several years. The human face view is irregular and non geometrical. Due to the limitations of previous 3D face reconstruction algorithms, This work attempts to improve the limitations of previous 3D face reconstruction algorithms by developing a new algorithm for interactive shape reconstruction from single image shading. The new algorithms, tested on real images, show promising results.
{"title":"3D human face reconstruction from single image using interactive shape from shading","authors":"M. B. Adm, A. Said","doi":"10.1109/NATPC.2011.6136297","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136297","url":null,"abstract":"As one of the most successful and interesting subject in computer vision and graphics domains, 3D face reconstruction has recently received significant attention, especially for the past several years. The human face view is irregular and non geometrical. Due to the limitations of previous 3D face reconstruction algorithms, This work attempts to improve the limitations of previous 3D face reconstruction algorithms by developing a new algorithm for interactive shape reconstruction from single image shading. The new algorithms, tested on real images, show promising results.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"44 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84160227","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}
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