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Articles 2281 - 2310 of 2807
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Surface Roughness Improvement For Passenger Car Hood Die Manufacturing Process, Worachet Onngam
Surface Roughness Improvement For Passenger Car Hood Die Manufacturing Process, Worachet Onngam
Chulalongkorn University Theses and Dissertations (Chula ETD)
Surface roughness of a die is a crucial factor for making a high-quality car hood. This research thesis is made for improving die surface quality in die manufacturing process. If the performance of milling process is not enough, it consumes a lot of time for doing polishing and might result in poor die quality that does not meet customer's need. Therefore, the purpose of this research is to improve the CNC milling process. Tools used for milling and all relate parameters are studied in order to figure out the most appropriate condition for the finish milling process. Nowadays, a 1-blade …
Rethinking Inclusive And Sustainable Educational Development For Moken Children, Jason Sanglir
Rethinking Inclusive And Sustainable Educational Development For Moken Children, Jason Sanglir
Chulalongkorn University Theses and Dissertations (Chula ETD)
Despite numerous education readjustments, efforts for equal opportunity in education, and an increase in present enrollment, many indigenous children in Thailand continue to fall behind in the formal education system. This study focuses on the Moken Chao Lay (sea people) communities in southern Thailand and looks to analyze and understand situations and shortcomings of Moken children's education and why they are still underperforming in the formal education system. Traditional ways of knowing, especially knowing through nature, are used as a platform to rethink the way we look at indigenous children's education in Thailand. Interview data was collected from school teachers, …
Selected Appropriate Decision Support Tool For Sustainable Rain-Fed Agriculture Referenced To The New Theory Of His Majesty King Bhumibol Adulyadej The Great: A Case Study Of Khao Wong District, Kalasin Province Of Thailand, Anutra Wannaviroj
Chulalongkorn University Theses and Dissertations (Chula ETD)
Thailand is an agricultural country of which almost 80% of the total agricultural land is rain-fed. An on-farm pond, which is a self-reliant small-scale water source for harvesting the rainwater to be used for the whole year, becomes radical for farmers in this area. These farmers need to select the agricultural water management scheme which uses limited rainwater harvested in the on-farm pond efficiently and productively to fulfill their household needs, which will lead to sustainable rain-fed agriculture. Therefore, the study aimed to select an appropriate decision support tool for sustainable rain-fed agriculture referenced to the New Theory of His …
Comparative Analysis Of Community Solar Projects Between Thailand And Japan, Masataka Yamashita
Comparative Analysis Of Community Solar Projects Between Thailand And Japan, Masataka Yamashita
Chulalongkorn University Theses and Dissertations (Chula ETD)
Community-solar (CS) has appeared as a new solar PV ownership model in the word, in which the business model of CS should vary depending on each country's context. Various unique factors of each country such as the design of the government's support, characteristics of the community, and business custom may have an impact on how community members benefit from CS projects. The objective of this research is to compare the implemented CS projects in Thailand and Japan and to provide policy recommendation on CS for both countries based on comparison for contribution to further development of CS. The selected case …
Management Guidelines For Urban Public Parks: A Case Study Of Lumpini Park, Bangkok, Thailand, Napat Suwannapuk
Management Guidelines For Urban Public Parks: A Case Study Of Lumpini Park, Bangkok, Thailand, Napat Suwannapuk
Chulalongkorn University Theses and Dissertations (Chula ETD)
Bangkok is the capital city of Thailand. It is one of the most primate cities in the world. Bangkok also the center of the country in all areas, being a major source of work and attracts people from across the country, which resulted as population overgrowth, mental illness, pollution, rapid urbanization, and the like. Even though the government succeeds to increase public parks area to be recreation and a lung for the urban dweller's life, but the inconsistency between rules and practices in park management is one of the key factors that hinder Bangkok's sustainable development. In order to explore …
Factors Associated With Attitude Towards Purchasing Intention On Inverter Air Conditioner Among Thai Consumers, Reika Yasunaga
Factors Associated With Attitude Towards Purchasing Intention On Inverter Air Conditioner Among Thai Consumers, Reika Yasunaga
Chulalongkorn University Theses and Dissertations (Chula ETD)
Factors associated with Thai Consumers' attitude towards purchasing intention on higher efficiency Air conditioner (AC) was investigated in this study. Consumers' current preference factors on AC purchasing as well as characteristics of consumers who bought AC during the recent 5 years were firstly investigated by descriptive analysis. Relationship between consumers' purchasing attitude towards higher efficiency AC and their concern on three issues (inverter, information on energy label, and payback period) as well as their knowledge on two issues (inverter and information on energy label) was then analyzed by structural equation modeling (SEM) using data collected from 202 Thai consumers having …
Policy Guideline On Disaster Risk Reduction For Climate Change Adaptation : A Case Of Klong Yan Watershed Resourse Conservation And Rehabilitation Network, Suratthani, Siwaporn Promdaen
Policy Guideline On Disaster Risk Reduction For Climate Change Adaptation : A Case Of Klong Yan Watershed Resourse Conservation And Rehabilitation Network, Suratthani, Siwaporn Promdaen
Chulalongkorn University Theses and Dissertations (Chula ETD)
Thailand is one of South-east Asian countries that have been suffered from extreme events resulting from the impacts of climate change. One consequence of changes is the severity and frequency of extreme events leading to disasters in all regions of Thailand. These effects provided losses and damages at all levels. To solve such problems, water resource management under climate change adaptation has been set up under policy guidelines to reducing the disaster risk from the climate change. The objective of this study is to study the policy guidelines on disaster risk reduction for climate change adaptation on water resource management …
Traditional Ecological Knowledge Of Indigenous Peoples On Climate Change Adaptation : A Case Study Of Sea Nomads “Orang Suku Laut”, Lingga Regency, Riau Islands Province, Indonesia, Wengki Ariando
Chulalongkorn University Theses and Dissertations (Chula ETD)
At the international community, Traditional Ecological Knowledge (TEKs) have been recognized and acknowledged the important roles of indigenous peoples to tackle climate change. The cultural practice, cultural belief and adaptive capacity in managing nature by the Orang Suku Laut (OSL), Indonesian indigenous group who are living as nomads in the sea, would be considered as the key drivers to achieve the effectiveness of climate change adaptation (CCA). This research aimed to study the TEKs of indigenous peoples on CCA of the OSL, Lingga Regency, Riau Islands Province, Indonesia, for appropriate CCA policy implemented at their communities. Data collection was obtained …
Local Knowledge Framework For Sustainable Utilization Of Mangrove Forest : A Case Study Of Klong Khone Sub-District, Mueang District, Samut Songkhram Province, Thailand, Wipapan Adulcharoen
Local Knowledge Framework For Sustainable Utilization Of Mangrove Forest : A Case Study Of Klong Khone Sub-District, Mueang District, Samut Songkhram Province, Thailand, Wipapan Adulcharoen
Chulalongkorn University Theses and Dissertations (Chula ETD)
A development of local knowledge or local knowledge life cycle for locally appropriate sustainable utilization of mangrove ecosystem services was influenced by factors that were specific to ecological and social-cultural conditions and varied relying a change of the targeted mangrove ecosystem services for utilization. This study aims 1) to identify the factors in the local knowledge life cycle during two phases of mangrove stand initiation and young forest regrowth at Klong Khone sub-district, Samut Songkhram province, Thailand and 2) to propose the local knowledge framework for the sustainable utilization of mangrove ecosystem services and lessons learned through the local knowledge …
Effect Of Operating Conditions On Color And Anions Removal From Textile Industrial Effluent Using Membrane Distillation System, Pyae Phyo Kywe
Effect Of Operating Conditions On Color And Anions Removal From Textile Industrial Effluent Using Membrane Distillation System, Pyae Phyo Kywe
Chulalongkorn University Theses and Dissertations (Chula ETD)
One of the main pollution from textile wastewater is the dyeing wastewater containing color and organic matters. To develop wastewater treatment systems and to reuse the water are still challenged because of the scarcity of water in the world. Among the treatment methods of textile wastewater, membrane distillation was used as the concept of this research. The focus points of the direct contact membrane distillation system are the membrane characteristics, operating parameters (temperature and flow rate) and treatment efficiency. The synthetic dye wastewater (reactive black-5 and reactive blue-19) and real textile effluent were used as the feed wastewater. In this …
Plastic Waste Utilization As Macro Fiber In Concrete, Artid Poonyakan
Plastic Waste Utilization As Macro Fiber In Concrete, Artid Poonyakan
Chulalongkorn University Theses and Dissertations (Chula ETD)
The use of plastics has increased over the years, thus resulting in a large volume of plastic waste being generated and accumulated in the environment. Due to its non-biodegradability and persistence, recycling processes have become one of the sustainable solutions for preventing environmental deterioration. Plastic wastes, including high density polyethylene (HDPE), low density polyethylene (LDPE), polypropylene (PP), and polyethylene terephthalate (PET), were collected from industrial sector and used as additional ingredients (macro fiber) to improve mortar properties. Prior to mortar processing, an increase in wettability of plastic fibers using nonionic surfactant, Dehydol LS-12, was investigated. At the optimal concentration of …
Health Risk Assessment Of Inhalation And Dermal Exposure To Particle-Bound Polycyclic Aromatic Hydrocarbons Of E-Waste Dismantling Workers In Buriram Province, Thailand, Sarasanant Bungadaeng
Health Risk Assessment Of Inhalation And Dermal Exposure To Particle-Bound Polycyclic Aromatic Hydrocarbons Of E-Waste Dismantling Workers In Buriram Province, Thailand, Sarasanant Bungadaeng
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research mainly studied on the inhalation and dermal exposure concentrations of particle-bound polycyclic aromatic hydrocarbon (PAHs) that e-waste burning workers probably received during their work and further estimated the health risk assessment in both route of exposure. According to the obtained results, the total concentrations of PAHs on PM₂.₅-₁₀ ranged from 0.0703 to 20.9800 μg/m³. For PM₂.₅, the total concentrations of PAHs varied from 0.2669 to 89.9645 μg/m³. In the dermal dust samples, the total concentrations of PAHs on the particles before burning work ranged from 8.1072 to 253.6118 mg/kg with the average concentration at 95.3894 mg/kg. For the …
System Dynamics Analysis On Municipal Solid Waste Management Under Flooding : Case Study Bangkok, Thailand, Nuchcha Phonphoton
System Dynamics Analysis On Municipal Solid Waste Management Under Flooding : Case Study Bangkok, Thailand, Nuchcha Phonphoton
Chulalongkorn University Theses and Dissertations (Chula ETD)
The municipal solid waste management service system has been one of the key service provisions to indicate the sustainability of the city as defined in Sustainable Development Goals - SDGs #11. Complex linkages of stock and flow within the system are impacted by waste quantities and spatial characteristics. The complex characteristics make it difficult to design a sustainable management system, particularly in case of a disaster. Flooding is a major natural disaster in many regions of the world and poses a challenge as an external disturbance that can affect any part of the waste management system. Flood mitigation plans are …
Conversion Of Waste Chicken Fat To Liquid Fuel On Coal Fly Ash Catalyst By Catalytic Cracking, Phorndranrat Suchamalawong
Conversion Of Waste Chicken Fat To Liquid Fuel On Coal Fly Ash Catalyst By Catalytic Cracking, Phorndranrat Suchamalawong
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this research work, a study on the catalytic cracking of waste chicken fat (WCF) on fly ash to liquid fuels and using 2k factorial design to determine the influence of parameters on liquid yield, naphtha and diesel content was investigated. The research was divided into 2 parts. First, the experiment was carried out in a batch lab scale reactor of 70 mL. The objectives are to determine the influence of parameters that affected the %yield of liquid product naphtha and diesel–liked fuels at the operating conditions of temperature range of 420 - 460 ˚C, reaction time 45-75 minutes, initial …
Ecological Impacts Of Fishing Gears In Ko Chang, Trat Province, Thailand, Wichin Suebpala
Ecological Impacts Of Fishing Gears In Ko Chang, Trat Province, Thailand, Wichin Suebpala
Chulalongkorn University Theses and Dissertations (Chula ETD)
Knowledge of ecological impacts of fishing, especially in small-scale sector, is not always readily available, making it difficult to employ an ecosystem-based approach to fisheries management and to achieve sustainability. The topic of this dissertation was formulated with the aim to enhance this knowledge through conducting researches in Mu Ko Chang, Trat Province, the Eastern Gulf of Thailand. This study focuses on two main types of impacts, i.e. bycatch and habitat damages, consisting of three research modules: 1) assessing existing knowledge and analyzing the knowledge gap regarding bycatch and habitat impacts of fishing methods in Thai waters; 2) investigating fishing …
Comparison Of Three Dimensional Accuracy For Surgical Guided Template Fabrication Using Two Different Implant Planning Software Programs, Natchaya Thitaphanich
Comparison Of Three Dimensional Accuracy For Surgical Guided Template Fabrication Using Two Different Implant Planning Software Programs, Natchaya Thitaphanich
Chulalongkorn University Theses and Dissertations (Chula ETD)
Statement of problem: Static computer-assisted implantation system (s-CAIS) has been introduced to implant dentistry for decades. According to previous studies, they were recognised the inaccuracies of actual implant position placed via using static computer-assisted implantation system. These inaccuracies result from an accumulation of every step in the workflow from planning to accuracy assessment. Recently, there are multiple implant planning softwares available. coDiagnostiXTM software and Implant StudioTM software are widely used third-party implant planning softwares which claimed to provide predictable implant placement outcome. However, the effect of softwares used on accuracy of guided surgery in anterior maxilla region has not been …
Mutual Fund Performance And Persistence Evaluationevidence From Thai Local And Foreign Luxembourg Ucits, Bruno Fourquin
Mutual Fund Performance And Persistence Evaluationevidence From Thai Local And Foreign Luxembourg Ucits, Bruno Fourquin
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper aims to compare the performance and persistence of equity Mutual Funds between Luxembourg equity UCITS (Undertakings for Collective Investment in Transferable Securities) and Thai equity Funds that are investing a minimum of 90% of their total portfolio in Thai equity market during a 5 years period (May 2013- April 2018). The tests are conducted via (i) static or unconditional measures including the Sharpe, Treynor, Jensen ratios; (ii) dynamic or conditional measures using Treynor-Mazuy, K. Shukla and Gregory B. van Inwegen indicators; (iii) control - robustness measures with Brown and Goetzmann, Murthi et al. performance persistence indices. The paper …
Preparation And Antimicrobial Activity Of Caprylic Acid Emulsion For Food Coating, Raweewan Bunyovimonnat
Preparation And Antimicrobial Activity Of Caprylic Acid Emulsion For Food Coating, Raweewan Bunyovimonnat
Chulalongkorn University Theses and Dissertations (Chula ETD)
Antimicrobial food coating is the interesting method for food preservation, especially in fruits and vegetables. Previous studies have been reported that the caprylic acid had the antimicrobial activity against a variety of microorganisms. However, little research has been conducted on the use of caprylic acid in the form of food coatings. Therefore, this study aims to determine the optimum conditions for the caprylic acid emulsion preparation and to evaluate the antimicrobial activity of the emulsion, including the effect of food coatings with caprylic acid emulsion on physical properties and microbial growth inhibition. Emulsions containing 4% w/v caprylic acid (oil) and …
Seismic Characteristics Of Paleo-Pockmarks At Great South Basin, New Zealand, Arunee Karaket
Seismic Characteristics Of Paleo-Pockmarks At Great South Basin, New Zealand, Arunee Karaket
Chulalongkorn University Theses and Dissertations (Chula ETD)
Paleo-pockmarks and present-day pockmarks are founded in several varieties both onshore and offshore worldwide. These features can be used as an indicator of fluid flow process which expulses through an unconsolidated sediment within the basin. The Great South Basin, New Zealand is one of the basins that paleo-pockmarks are observed covering the southeast offshore of South Island at around 1.5 s (TWT) depth beneath the surface. This study aims to identify seismic characteristics of paleo-pockmarks in the Great South Basin and predict the possible fluid origins and their mechanism. The numerous paleo-pockmarks are identified and imaged by using 3D seismic …
The Influence Of Geological Structure On Stratigraphic Development During Multiphase Rifting In The Songkhla Basin, Gulf Of Thailand, Jidapa Phoosongsee
The Influence Of Geological Structure On Stratigraphic Development During Multiphase Rifting In The Songkhla Basin, Gulf Of Thailand, Jidapa Phoosongsee
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Cenozoic N-S trending Songkhla rift basin, located in the southwest Gulf of Thailand, was developed as a predominantly orthogonal extended half graben structure. The half graben is controlled by a boundary fault zone on the western side of the basin, which forms a series of N-S to NNE-SSW, east-dipping normal faults. The rift spans two phases of rifting; the Eocene-Oligocene and the Oligocene-Miocene phases, the late syn-rift to post-rift transition occurred from the late Early Miocene to Middle Miocene. The main clastic hydrocarbon reservoirs in the basin are located in the Early Miocene to Middle Miocene section. These reservoirs …
Influences Of Geologic Conditions And Anthropogenic Activities On Changes Of Geomorphology And Sediment Load Characteristics Of The Ping And Chao Phraya Rivers, Nikhom Chaiwongsaen
Influences Of Geologic Conditions And Anthropogenic Activities On Changes Of Geomorphology And Sediment Load Characteristics Of The Ping And Chao Phraya Rivers, Nikhom Chaiwongsaen
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Chao Phraya River flows into the largest river basin of Thailand. The Ping River is one of its the major upstream branches flowing down slope southwardly, joining the Chao Phraya River in the central plain and ends at the Gulf of Thailand. The sand-choked is extensively observed and the flood overflow occurs frequently and rapidly at the Lower Ping River. In contrary, the Chao Phraya River, the erosion of river bank and shoreline around the river mouth has been spatially increasing in place. The Landsat imageries taken in 1987, 1997, 2007 and 2017 were used to analyze geomorphological changes …
Aftershock Analysis In The Mainland Southeast Asia, Premwadee Traitangwong
Aftershock Analysis In The Mainland Southeast Asia, Premwadee Traitangwong
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study, the characteristics of the aftershock in the mainland Southeast Asia (MSEA) were investigated using the several seismological techniques, i.e., i) the Gutenberg-Richter relationship (G-R relationship) ii) the modified Omori's law iii) the Bath's law and iv) the fractal dimension. After declustering, 1,697 clusters during 1985-2017, which represent the aftershocks occurring after mainshock were investigated in 13 seismic source zones recognized in the MSEA. According to the Bath's law, the maximum magnitude of the aftershock depends on the magnitude of the mainshock, with the difference value between 0.4-2.5. In the intraplate zone, it is less than in the …
Effects Of Monovalent Ions On Low Salinity Waterflooding In Shaly-Sandstone Reservoir, Ativish Yomchan
Effects Of Monovalent Ions On Low Salinity Waterflooding In Shaly-Sandstone Reservoir, Ativish Yomchan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Multi-component Ion Exchange (MIE) was proved to be a major mechanism occurred during Low Salinity Waterflooding (LSWF). Reduction of both total salinity and concentration of divalent ions of injected water together with a presence of monovalent ion results in dissolution of divalent ions linking between rock surface and oil. As a consequence, oil is liberated from rock surface. This study aims to study effects of monovalent ions in MIE mechanism. Stirring test is performed and results show that ion with less hydration radius tends to be more active in MIE; hence, potassium ion and cesium ion illustrate potential in oil …
Mineral Inclusions In Ruby And Sapphire From Bo Welu And Bo Rai Deposits, Eastern Thailand, Supparat Promwongnan
Mineral Inclusions In Ruby And Sapphire From Bo Welu And Bo Rai Deposits, Eastern Thailand, Supparat Promwongnan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Corundum deposits located in several places around the world which appear to have different genesis models. The origins of corundum can be distinguished by mineral inclusions. In this study, most of the rough gem corundum from Bo Rai deposit, Trat Province, and Bo Welu deposit, Chanthaburi Province, in Eastern Thailand show etched or dissolved surfaces that were resulted from dissolution by hot basaltic magma during transportation to the surface. Moreover, these gem corundums also show absorption spectral characteristics related to trace elements which typical for corundum from this area. Corundums from Bo Rai deposit in Trat Province, and from Bo …
Crude Oil Removal By Sphingobium Sp. Mo2-4 And Bacillus Megaterium Tl01-2 Immobilized On Aquaporous Gel, Adisan Rungsihiranrut
Crude Oil Removal By Sphingobium Sp. Mo2-4 And Bacillus Megaterium Tl01-2 Immobilized On Aquaporous Gel, Adisan Rungsihiranrut
Chulalongkorn University Theses and Dissertations (Chula ETD)
Petroleum products are the major energy sources that drive global economy. The exploration and exploitation of crude petroleum oil increase the potential risk for oil spills in marine ecosystem. In this work, two non-pathogenic sponge-associated bacteria were developed as immobilized bacterial co-culture for crude oil removal from seawater. Two bacteria were Spingobium sp. MO2-4 that could degrade crude oil, diesel oil, and fuel oil, and Bacillus megaterium TL01-2 that could degrade crude oil, possessed high cell surface hydrophobicity, could tolerate heavy metal, and was able to form biofilm.. The modified polyurethane foam, aquaporous gel (AQ), was used as carrier for …
Diesel Removal Efficiency In Soil Washing Process By Mixed Solution Of Nonionic Surfactant And Biosurfactant, Pajaree Boonyathai
Diesel Removal Efficiency In Soil Washing Process By Mixed Solution Of Nonionic Surfactant And Biosurfactant, Pajaree Boonyathai
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study, Tween 80 and three biosurfactant (Rhamnolipid, Saponin and Lipopeptide) were mixed to formulate the appropriate surfactant solution for diesel removal from contaminated soil by washing process. The mixed surfactant system was fixed at 5% w/v of active surfactants concentration in total with different mass ratio of Tween 80 to biosurfactant at 9:1, 8:2 and 7:3 of total concentration. The critical micelle concentration (CMC) of various ratio surfactant mixtures and their interfacial tension (IFT) with diesel were determined and compared with their individual surfactant. The results illustrate that mixed Tween and Lipopeptide at 9:1 mass ratio had the …
Formulation Of Oil Dispersants By Mixing Lipopeptide Biosurfactant And Non-Ionic Surfactants, Parisarin Nawavimarn
Formulation Of Oil Dispersants By Mixing Lipopeptide Biosurfactant And Non-Ionic Surfactants, Parisarin Nawavimarn
Chulalongkorn University Theses and Dissertations (Chula ETD)
Marine oil spill can cause various harmful impacts to the environment. To solve this problem, dispersant is usually applied to enhance petroleum remediation in seawater. The commercial dispersants mostly contain surfactant and solvent that can be toxic to marine lives. This study aimed to formulate solvent-free biosurfactant-based dispersants by mixing lipopeptides from Bacillus subtilis GY19 with fatty alcohol ethoxylate (Dehydol LS7TH), a low toxicity nonionic surfactant. Hydrophilic-lipophilic deviation (HLD) concept was applied. The fractions of lipopeptide and dehydol LS7TH were determined based on the equivalent alkane carbon number (EACN) of hydrocarbons under seawater salinity (34ppt). The molar fractions of lipoppeptide …
Pm10 And Pm2.5 Concentrations In Bangkok Over 10 Years And Implications For Air Quality, Tin Thongthammachart
Pm10 And Pm2.5 Concentrations In Bangkok Over 10 Years And Implications For Air Quality, Tin Thongthammachart
Chulalongkorn University Theses and Dissertations (Chula ETD)
Atmospheric particulate matter particles with a diameter less than 10 micron (PM10) and less than 2.5 micron (PM2.5) have been adverse human health effect. Ambient air pollution data in Central Business District (CBD) of Bangkok monitored by Pollution Control Department and Bangkok Metropolitan Administration were collected over ten years in Bangkok from 2008 to 2017. Trend of the particulate matter concentrations data were investigated over ten year for implications of activities related to air pollution. Daily average air pollution data between year 2015 and year 2017 were used as the dependent variables to develop mathematic models with multiple linear regression …
Validity And Reliability Of Automatic Range Of Motion Measurement Using The Elbow Joint Photograph, Chris Charoenlap
Validity And Reliability Of Automatic Range Of Motion Measurement Using The Elbow Joint Photograph, Chris Charoenlap
Chulalongkorn University Theses and Dissertations (Chula ETD)
Background: Photographic-based arc of motion measurement methods required human assessors and its accuracy is depend on observer experience. Objectives: Current research proposed method of using digital image processing technique (DIPT) for measuring elbow range of motion. Methods: Participants were enrolled from students and staffs in the university. Fluoroscopic images of both elbows were taken in flexion and extension positions. Two physiotherapists performed goniometer, inclinometer and smartphone gyroscope range of motion (ROM) measurement on bilateral elbows. Photographer took elbow images in fully extension and fully flexion three times for each position with 8-megapixel smartphone camera. The extension and flexion angles were …
System Dynamics Analysis Of Sugar-Sweetened Beverage Taxing Effect On Sugar Consumption, Dental Health Service Utilization And Oral Health For Thai Adults And Elderly, Nipaporn Urwannachotima
System Dynamics Analysis Of Sugar-Sweetened Beverage Taxing Effect On Sugar Consumption, Dental Health Service Utilization And Oral Health For Thai Adults And Elderly, Nipaporn Urwannachotima
Chulalongkorn University Theses and Dissertations (Chula ETD)
Dental caries is a major oral health problem, particularly among developing countries. Almost half of Thai adults and elderly have at least one untreated dental caries. Dental caries can result in debilitating pain that affects work productivity and even the performance of daily activities. The objectives of this study are to develop system dynamics model addressing the relationship of dental caries, sugar consumption and dental health service utilization of Thai population aged 15 and older; and to estimate the changes of dental caries prevalence when the sugar-sweetened beverage tax is implemented. A multi-sector system dynamics model was developed to consolidate …