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Chulalongkorn University Theses and Dissertations (Chula ETD)

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Rapid Quality Determination Of Mulberry Leaf Tea During Storage Using Electronic Nose And Electronic Tongue, Anchalee Ruengdech Jan 2017

Rapid Quality Determination Of Mulberry Leaf Tea During Storage Using Electronic Nose And Electronic Tongue, Anchalee Ruengdech

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study was aimed to develop rapid methods based on electronic nose (e-nose) and electronic tongue (e-tongue) to determine the quality attributes and phytochemicals of mulberry leaf tea. This study was divided into three parts: (1) to determine the effect of cultivar on the quality attributes and phytochemicals of mulberry leaf tea, (2) to evaluate the effect of packaging and storage time on quality attributes and phytochemicals of mulberry leaf tea, and (3) to employ e-tongue combined with chemometrics for prediction of phytochemicals and antioxidant activity of mulberry leaf tea. Mulberry leaf tea prepared from three different mulberry cultivars including …

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Assessment Of Cadmium Migration Into Groundwater In Mae Sot District, Tak Province Using Monte Carlo Technique, Pongsathorn Thunyawatcharakul Jan 2017

Assessment Of Cadmium Migration Into Groundwater In Mae Sot District, Tak Province Using Monte Carlo Technique, Pongsathorn Thunyawatcharakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Mae Sot is a district in Tak province that confronts Cd contamination within the area. The target organs for Cd exposure was kidneys and skeletal system which could lead to severe health effects such as renal dysfunction, osteoporosis, bone softening, Itai-Itai disease, and lung cancer. The intention of this study was to examine the sorption behavior of nine soil samples in the study area and applied Monte Carlo technique that would increase model efficiency for Cd migration in to the soil profile. Batch adsorption experiments were performed and fitted with the adsorption isotherms as follows: Linear, Langmuir, and Freundlich isotherms. …

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The Effect Of Edta-Application To Heavy Metals Phytoremediation By Vetiver, Ramida Wasino Jan 2017

The Effect Of Edta-Application To Heavy Metals Phytoremediation By Vetiver, Ramida Wasino

Chulalongkorn University Theses and Dissertations (Chula ETD)

Contaminated soil with heavy metals includes Pb, Zn, and Cd were remediated by phytoremediation with vetiver to solved the problem in Thailand. This study compared the ability of two species of vetiver (i.e., Songkhla 3 and Prachuap Khiri Khan) in absorbing Pb, Zn, and Cd in contaminated soils and study the effect of EDTA application. After the experiment, Toxicity Characteristic Leaching Procedure (TCLP) test, Allium test, and seed germination were used to determined the toxicity of remediated soil. In this study, 5 mmol of ethylenediaminetetraacetic acid (EDTA) was used to improve the solubility of heavy metals in soil which leads …

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Pretreatment Prognostic Factors To Predict Survival Outcome In Advanced Non-Small Cell Lung Cancer With First Line Treatment In Thailand: A Retrospective Cohort Study, Sureerat Jaruhathai Jan 2017

Pretreatment Prognostic Factors To Predict Survival Outcome In Advanced Non-Small Cell Lung Cancer With First Line Treatment In Thailand: A Retrospective Cohort Study, Sureerat Jaruhathai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: Tumor genetic information and biologic markers are often used as prognostic factors. However, these have limited applicable in real daily practice due to their high cost . Objective: To evaluate which inexpensive, convenient simple prognostic factors are associated with survival outcome with first line treatment among patients with advanced non-small cell lung cancer (NSCLC). Methods: Retrospectively reviewed the charts of patients diagnosed with having advanced NSCLC with no previous treatment seen at King Chulalongkorn Memorial Hospital and Police General Hospital during 1 January 2008-31 Dec 2013. Results: A total of 301 patients were included in the study; 68.1% males. …

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Coal Combustion Products Utilization For Soil Amendment, Tran Thi Anh Tuyet Jan 2017

Coal Combustion Products Utilization For Soil Amendment, Tran Thi Anh Tuyet

Chulalongkorn University Theses and Dissertations (Chula ETD)

Nowadays, coal has a crucial role in generating energy all over the world. As a result, the consumption of coal creates a huge amount of coal combustion products, including bottom ash and fly ash. The coal ash has the potential characteristics to become a resource material in agriculture such as its texture, water holding capacity, bulk density, pH etc., and contains almost all the essential plant nutrients. However, most of the coal ash created is dumped into the landfill, which is a contributing factor in the environmental degradation. This study wants to use coal ash in agriculture as a way …

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Cost-Effectiveness Analysis Of Aripiprazole Compare With Risperidone In Patient With Autism Spectrum Disorders, Kridsadadanudej Wongwejwiwat Jan 2017

Cost-Effectiveness Analysis Of Aripiprazole Compare With Risperidone In Patient With Autism Spectrum Disorders, Kridsadadanudej Wongwejwiwat

Chulalongkorn University Theses and Dissertations (Chula ETD)

Autism spectrum disorders (ASD) are a group of deficits in social interaction and social communication (American Psychiatric Association, 2013). The result of a study in Thailand found that ASD patients with less self-reliance increased the number of caregivers, indirect costs and total costs (Naruemol Junsamut, 2014). Risperidone and aripiprazole showed the effectiveness for treating irritability/disruptive behavior in ASD (LeClerc & Easley, 2015). The objective of this research was to estimate the cost-effectiveness of aripiprazole compared with risperidone for treating ASD patient. Seven studies were selected to analyze the outcomes of effectiveness utilizing network meta-analysis. The number of improving symptoms that …

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Human Health Risk Assessment Of Cadmium Exposure Through Rice Consumption In Mae Tao, Mae Sot District, Tak Province, Parin Suwatvitayakorn Jan 2017

Human Health Risk Assessment Of Cadmium Exposure Through Rice Consumption In Mae Tao, Mae Sot District, Tak Province, Parin Suwatvitayakorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Mae Tao sub-district is located in the Mae Tao watershed, an important Cd contaminated area in Thailand. This study was conducted to i) investigate total Cd concentration in rice from households in the Mae Tao sub-district and ii) estimate health risks from Cd exposure through rice consumption. A total number of 159 rice samples were collected from households in all 6 villages of the Mae Tao sub-district. These rice samples were digested with concentrated nitric acid and analyzed by the inductively coupled plasma mass spectrometry (ICP-MS). Biodata information and rice consumption behavior were surveyed from the local residents at the …

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Factors Associated With Infant And Under-Five Mortality In Myanmar, Lal Hrin Mawi Jan 2017

Factors Associated With Infant And Under-Five Mortality In Myanmar, Lal Hrin Mawi

Chulalongkorn University Theses and Dissertations (Chula ETD)

Myanmar is committed to achieve unfinished agenda for reducing child mortality, fourth indicator of Millennium Development Goals (MDGs) and global target to achieve under-five mortality rate 25 per 1000 live births in 2030. Moreover, under-five mortality varies across states and regions within the country and the study aims to explore determinants of mortality across different health care planning zones. The results showed that infants who were breastfed had lower risk of death by 11.7 percent comparison with children who were not, and twin or multiple births were more likely to die by 8.1%. Moreover, short preceding birth interval, mothers with …

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Private Stakeholders’ Perception On Leveraging Provider Payment Methods For Both Public And Private Sectors To Help Meet National Health Goals In Myanmar, Nay Nyi Nyi Lwin Jan 2017

Private Stakeholders’ Perception On Leveraging Provider Payment Methods For Both Public And Private Sectors To Help Meet National Health Goals In Myanmar, Nay Nyi Nyi Lwin

Chulalongkorn University Theses and Dissertations (Chula ETD)

Myanmar has committed to achieving universal health coverage (UHC) by 2030. With a poor economy and scarce resource, the government alone cannot achieve UHC without the collaboration of private stakeholders which has an increasing role in the health sector with evolving political and administrative circumstances. To uplift equitable access to essential quality health care services with financial risk protection and efficiency, the country is eager to know a suitable mix of provider payment methods which can be used as key levers to support achieving UHC goals. This study is designed to explore the private stakeholders' perception on leveraging provider payment …

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Technical Efficiency Of Private Clinics Under Universal Coverage Scheme In Bangkok, Thailand, Pimpitcha Kangyang Jan 2017

Technical Efficiency Of Private Clinics Under Universal Coverage Scheme In Bangkok, Thailand, Pimpitcha Kangyang

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to measure technical efficiency of 88 private clinics under Universal Coverage Scheme (UC) in Bangkok in fiscal year 2017 and to identify the factors affecting their technical efficiency. The study was divided to two parts. The first part was measuring of technical efficiency with data envelopment analysis (DEA) and the second part was identifying the factors affecting efficiency with regression analysis using Tobit model. The result of DEA under a variable return to scale assumption showed that 84 private clinics under UC (95.45 percent of the target of study) were operating on pure technical efficiency frontier (VRSTE), …

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Cost-Effectiveness Analysis Of Laparoscopic Cholecystectomy Compared With Open Cholecystectomy At A Private Hospital In Myanmar, Pye Paing Heing Jan 2017

Cost-Effectiveness Analysis Of Laparoscopic Cholecystectomy Compared With Open Cholecystectomy At A Private Hospital In Myanmar, Pye Paing Heing

Chulalongkorn University Theses and Dissertations (Chula ETD)

Laparoscopic cholecystectomy (LC) has become the main treatment of uncomplicated gallstone diseases in developed countries due to shorter hospital stay, faster recovery time and other benefits. However, it is still controversial for developing countries. This study aims to evaluate whether laparoscopic cholecystectomy is more cost-effective than open cholecystectomy (OC) in the treatment of gallstone diseases in Myanmar. A cost-effectiveness analysis was evaluated from the provider perspective. The required cost and outcome data were obtained from a private hospital which is located in Yangon, Myanmar. Two outcomes are used as effectiveness in this study, namely cases of complications avoided and cases …

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Factors Influencing Health Care Utilization Among Middle Aged And Elderly People In China, Qilimuge - Jan 2017

Factors Influencing Health Care Utilization Among Middle Aged And Elderly People In China, Qilimuge -

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: China's one-child policy, significant advancement in health care, increase in life expectancy and decrease in birth rate all contribute to rapidly aging society. Proportion of elderly will continue to grow, which will put more burden on an already troubled health care system. This study tries to assess factors influencing health care utilization among middle-aged and elderly people in China. Objective: To analyze factors influencing health care utilization among middle-aged and elderly people in China. Methods: The study used secondary data from the China Health and Retirement Longitudinal Study (CHARLS) 2013 wave survey. The outcomes of interest include outpatient and …

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Technical Efficiency Of Public District Hospitals In Vietnam, Thi Binh Lam Jan 2017

Technical Efficiency Of Public District Hospitals In Vietnam, Thi Binh Lam

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objectives of this study aimed to evaluate the Technical Efficiency of public district hospitals in Vietnam and to determine factors affecting the hospitals' efficiency. Input-Oriented Data Envelopment Analysis (DEA) model was applied to estimate the technical efficiency scores among 52 public district hospitals in 6 provinces of Vietnam in 2014. Then, Tobit regression model was employed to explore the determinant factors. Results of the DEA indicated that there were considerable variations of efficiency scores in terms of return to scale assumptions. The average variable return to scale technical efficiency (VRSTE) and constant return to scale technical efficiency (CRSTE) were …

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Factors Affecting Health Seeking Behavior Of People In Ejin Horo County, China, Yuan Yuan Jan 2017

Factors Affecting Health Seeking Behavior Of People In Ejin Horo County, China, Yuan Yuan

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aims to explore health seeking behavior in Ejin Horo county, China, specifically it tries to assess how socioeconomic-demographic factors and health literacy affect the decision to use formal outpatient care and conditioning on use the choice among the three-tiered health care facilities visited by people in Ejin Horo county, China during the period of 2016. Our attention is placed on the demand side because Ejin Horo county is the most powerful county in Inner Mongolia and the supply of health services in this county is quite comprehensive. In essence, the study on health seeking behavior will be able …

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Threshold Of Luminance Contrast And Chromaticity Contrast For Subjects Wearing Simulated Low Vision Glasses, Mintra Manavutt Jan 2017

Threshold Of Luminance Contrast And Chromaticity Contrast For Subjects Wearing Simulated Low Vision Glasses, Mintra Manavutt

Chulalongkorn University Theses and Dissertations (Chula ETD)

As reported by WHO in 2010, there are 246 million people with low vision (total population in the world is 6,737 million). The proper environment is important for doing their daily activities not only to be safe and convenient but also to improve the quality of life. This research investigated the threshold of luminance contrast and chromaticity contrast for subjects wearing simulated low vision glasses. The subjests are color normal vision wearing simulated low vision glasses with visual acuity (VA) ranging between 0.05 and 0.3: narrow vision (NV), blur vision (BL), occlusion vision (OLS) and combination of blur and occlusion …

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Effect Of Degradation Of Peg 600 On Color Fading And Crosslinking In Soft Gelatin Capsule Shell, Weena Nittayasoot Jan 2017

Effect Of Degradation Of Peg 600 On Color Fading And Crosslinking In Soft Gelatin Capsule Shell, Weena Nittayasoot

Chulalongkorn University Theses and Dissertations (Chula ETD)

Autoxidation of polyethylene glycol (PEG) 600, which is a hydrophilic liquid commonly filled in soft gelatin capsules, results in formaldehyde which is an oxidizing agent. The objectives of the present study were to study the effect of formaldehyde on fading of brilliant blue dye and crosslinking in the soft gelatin capsules; also to investigate possibility of inhibition of PEG 600 autoxidation by a selected antioxidant. Nine PEG 600 based fill formulations were prepared according to a full factorial design with 2 factors and 3 levels of water (0, 5, 10 %w/w) and an antioxidant, i.e. d-α-tocopherol (0, 0.001, 0.05 %w/w). …

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Application Of Radio Frequency Identification (Rfid) Technology For Tracking The Manufacture Of Narcotic Drugs And Psychotropic Substances: A Case Study Of Phenobarbital Tablets Production, Jesdaporn Rachivong Jan 2017

Application Of Radio Frequency Identification (Rfid) Technology For Tracking The Manufacture Of Narcotic Drugs And Psychotropic Substances: A Case Study Of Phenobarbital Tablets Production, Jesdaporn Rachivong

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study applied RFID tracking of the manufacturing process and tracing back of product for preventing API loss with phenobarbital tablets as a case study. GPO has produced narcotic drugs, and psychotropic substances complied with GMP, Narcotics Act, and Psychotropic Substances Act. It included designing RFID implementation, determining user requirement and functional specification, selecting suitable devices, evaluating significant parameters and verifying the designed system. The verified software was continuously tested in stages of site testing and was assessed the risk with FMEA tool, user's satisfaction and the impact on the manufacturing process. The risk priority class of a plant which …

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Preparation And Stabilization Of X-Ray Amorphous Solid State Structure Of Salbutamol Sulfate Adsorbed On Mesoporous Silica, Treeruk Prasertsri Jan 2017

Preparation And Stabilization Of X-Ray Amorphous Solid State Structure Of Salbutamol Sulfate Adsorbed On Mesoporous Silica, Treeruk Prasertsri

Chulalongkorn University Theses and Dissertations (Chula ETD)

The main objective of this study was to focus on the preparation of X-ray amorphous salbutamol sulfate (SS) with mesoporous silica (S244 silica) carrier by using incipient wetness impregnation approach and further investigated on the utilization of poly (vinylpyrrolidone) (PVP) K12 for the stabilization of amorphous produced. Initially, SS was prepared in solution state and later loaded on S244 silica. The output product showed the non-ordered arrangement of SS with the longer interconversion time to crystalline when comparing with ground amorphous SS. It should be explained that SS was located on the silica surface randomly with no molecular packing according …

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Treading Water: An Ethnography Of The Plight And Capabilities Of Afghan Refugees In Indonesia, Jennifer Kay Moberg Jan 2017

Treading Water: An Ethnography Of The Plight And Capabilities Of Afghan Refugees In Indonesia, Jennifer Kay Moberg

Chulalongkorn University Theses and Dissertations (Chula ETD)

ACCORDING TO THE 2016 UNHCR STATISTICS, THERE ARE OVER 14,000 REFUGEES TRAPPED IN INDEFINITE TRANSIT IN INDONESIA, WITH FAINT HOPE OF EVER BEING RESETTLED TO ANY THIRD COUNTRY. THE WEST JAVA TOWN OF CISARUA ALONE HOSTS NEARLY 5,000 REFUGEES FROM THE ETHNIC HAZARA MINORITY GROUP FROM AFGHANISTAN. IN THEIR INTRACTABLE LIMBO, A GROUP OF THESE HAZARAS HAVE SET UP A NUMBER OF REFUGEE RUN LEARNING CENTRES AND COMMUNITY INITIATIVES, CREATING FOR THEMSELVES MEANING AND PURPOSE DURING THEIR UNBOUNDED TRANSIT. THIS TOWN AND POPULATION REPRESENT A UNIQUE CASE STUDY IN REFUGEE RESILIENCE, TRANSFORMATION, AND EMPOWERMENT IN LIGHT OF A DEEPENING GLOBAL …

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Sisters, Boyfriends, And The Big City: Trans Entertainers And Sex Workers In Globalized Thailand, Leo Bernardo Escalante Villar Jan 2017

Sisters, Boyfriends, And The Big City: Trans Entertainers And Sex Workers In Globalized Thailand, Leo Bernardo Escalante Villar

Chulalongkorn University Theses and Dissertations (Chula ETD)

As transgender issues penetrate mainstream human rights dialogue, most of the current understanding and research on this marginalized group revolve around the perspective of HIV/AIDS prevention and awareness. To add to the growing academic discourse on transgender women in the world of work, this research looks into the lives of transgender women sex workers and entertainers in the major cities of Bangkok and Pattaya in Thailand. The research uses a qualitative approach consisting of content analysis of relevant Thai policies and semi-structured interviews with 8 transgender women, a transgender-focused local NGO, and the management team of a prominent transgender cabaret …

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The Challenges And Livelihood Strategies Of Pakistan's Urban Women Refugees In Bangkok,Thailand, Margaret Mbeyu Nguma Jan 2017

The Challenges And Livelihood Strategies Of Pakistan's Urban Women Refugees In Bangkok,Thailand, Margaret Mbeyu Nguma

Chulalongkorn University Theses and Dissertations (Chula ETD)

Despite the fact that Thailand is a non-signatory of the 1951Refugee Convention relating to the Status of Refugee and its 1967 protocol, it has become a home to many and still provides basic protection for many refugees and those who seek asylum. In principle with lack of some legal framework that recognizes and provides documents for asylum seekers and refugees, these subjects are treated as illegal migrants under the Thai Law article 12 of Immigration act. The focus of the study is to understand and examine the challenges and the livelihood strategies faced by Pakistan urban women refugees on access …

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Singaporean Malays' Perspectives Of Income Inequality And Its Impact On Their Opportunities In Singapore’S Education System, Ngak Leng Tan Jan 2017

Singaporean Malays' Perspectives Of Income Inequality And Its Impact On Their Opportunities In Singapore’S Education System, Ngak Leng Tan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Studies on the profile of income inequality revealed that Singaporean Malays continuously occupied the lowest income strata and fared relatively poorer in their academic performance compared to other races. In a highly competitive meritocratic education system that rewards relative merit, yet neglects how unequal backgrounds provided unfair starting points for some, such low-income Malay households may appear to be systemically disadvantaged by income inequality and their access to better education. Under these circumstances, income inequality is further perpetuated. Through the use of focus group discussions and in-depth interviews, my proposed research will seek to understand how Singaporean Malays perceive such …

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Development And Dynamics Of The Informal Workers In Thailand: A Case Study Of Informal Workers Network, Tanachot Assawarotjanamitre Jan 2017

Development And Dynamics Of The Informal Workers In Thailand: A Case Study Of Informal Workers Network, Tanachot Assawarotjanamitre

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis aims to analyze the informal worker movement that is associated with a labor NGO named HomeNet Thailand, which helped mobilize informal workers and strengthen their skills and knowledge. The core analysis of thesis follows Resource Mobilization Theory and Political Process Theory to analyze the informal workers' developments, conditions, and limitations. This thesis explores the Informal workers' situation during Yingluck Shinawatra's civilian government (2011-2014) and Prayut Chan-o-cha's miliatry government (2014-Present). The thesis consists of 5 parts. Firstly, an introduction elaborates the research methodology of Archival Research and Interview methods. Secondly, a literature review and theoretical framework show the limitations …

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Knowledge Politics In National Nuclear Energy Planning In Thailand (2007-2017) With A Case Study Of Ubon Ratchathani Province, Tipakson Manpati Jan 2017

Knowledge Politics In National Nuclear Energy Planning In Thailand (2007-2017) With A Case Study Of Ubon Ratchathani Province, Tipakson Manpati

Chulalongkorn University Theses and Dissertations (Chula ETD)

Thailand has long aspired to nuclear power for electricity generation, and there are plans for nuclear power projects in the most recent Power Development Plans (2015-2036) - PDP 2015. The reason for incorporating nuclear power relates to anticipation of growing energy demand. Nuclear power is seen as an attractive option for diversifying energy sources, as to date Thailand has largely depended on domestic natural gas reserves and imported fuel resources. On the one hand, nuclear power has been promoted as a 'low carbon' emission option to mitigate greenhouse gas (GHG) emissions. On the other hand, nuclear technology carries significant potential …

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Microcredit And Women's Empowerment In Dry Zone Area, Myanmar, Zon Phyu Linn Jan 2017

Microcredit And Women's Empowerment In Dry Zone Area, Myanmar, Zon Phyu Linn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Microcredit (microloans) has proved to be an important liberating force in societies where women have to struggle against repressive social and economic conditions. As a tradition in Myanmar society, women often take the back seat and are not active in decision-making despite working hard in all aspects of the economic sphere. The improvement in women's economic empowerment has the potential to lead to positive changes in both social and psychological dimensions. An important institution for promoting microcredits in Myanmar is Pact INGO, which is implementing a savings-led economic empowerment program for women, under the WORTH model. Since its launch, Pact …

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Strategic Fit For Outsourcing Of Pharmaceutical Manufacturing: A Scenario Study In Thailand, Sompong Apithamsoonthorn Jan 2017

Strategic Fit For Outsourcing Of Pharmaceutical Manufacturing: A Scenario Study In Thailand, Sompong Apithamsoonthorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Outsourcing is recognized as one of the critical factors for efficient execution of pharmaceutical supply chain management, many pharmaceutical companies engage in international outsourcing of services (IOS) to survive in global highly competitive business. Since the key success factors for both domestic & international alliances are partnership characteristics and strategic fit management, but there is no empirical research on this issue in Thai pharmaceutical partnership offshore outsourcing. Therefore, this survey of Thai and foreign companies, both contract providers (CPs) and contract manufacturers (CMs), seeks to indicate significant relationships among both outsourcing strategic fit type and partnership type, including outsourcing performance …

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Effects Of Food On Growth And Gonadal Development Of Seahorse Hippocampus Sp., Thatpon Kamnurdnin Jan 2017

Effects Of Food On Growth And Gonadal Development Of Seahorse Hippocampus Sp., Thatpon Kamnurdnin

Chulalongkorn University Theses and Dissertations (Chula ETD)

Hippocampus sp. has received attention as a source of aquarium and ornamental trade. Seahorses have been threatened from non-target fisheries, habitat loss and traditional Chinese medicine (TCM). In response to concern about a decrease of population in the wild, an aquaculture of this species may provide the seahorse numbers for the commercial demands. However, one of the critical problems in aquaculture is the proper dietary for growth and their development. Therefore, this study was conducted on different types of preys on survival rates, growth rates and gonadal development in Hippocampus sp. during the day of birth until the 31day after …

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Comparision Of Fly Ash And Metakaolin Based Geopolymer Properties For Heavy Metal Adsorption, Sujitra Onutai Jan 2017

Comparision Of Fly Ash And Metakaolin Based Geopolymer Properties For Heavy Metal Adsorption, Sujitra Onutai

Chulalongkorn University Theses and Dissertations (Chula ETD)

This work aims to evaluate the effectiveness of fly ash and metakaolin based geopolymer powder and fly ash and metakaolin based geopolymer composite fiber as an adsorbent for removal of heavy metal ions from aqueous solution. The fly ash and metakaolin used as raw materials in this research was from Thailand. Fly ash based geopolymer (FAG) was synthesized by mix with an alkali solution. After that, the geopolymerization process was occurred and then cured geopolymer samples at 60oC for 24 h and left at 25 oC for 6 days. The fly ash based geopolymer was ground, washed and sieved through …

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Measurement Of Eye Lens Dose In Interventional Radiologist From Tace Procedures Using Osld, Mananchaya Vimolnoch Jan 2017

Measurement Of Eye Lens Dose In Interventional Radiologist From Tace Procedures Using Osld, Mananchaya Vimolnoch

Chulalongkorn University Theses and Dissertations (Chula ETD)

For routine clinical service at Section of Interventional Radiology, Department of Radiology, King Chulalongkorn Memorial Hospital (KCMH), TACE procedure has been one of the high exposure procedures, which result in increasing eye lens dose in interventional radiologists. Thus, radiation dose should be evaluated in interventional radiology staff who may receive high eye lens dose. Currently, there is insufficient information to comply with the ICRP dose limit on the occupation exposure to the eye lens. One of the factors affecting the eye lens dose is the variation in tube directions in the interventional radiology (IR) laboratories. A preliminary study about tube …

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Monitor Unit (Mu) Validation Using Various Types Of Dosimeters For Commissioning Small Field In Eclipse™ Treatment Planning System, Sammuel Mamesa Jan 2017

Monitor Unit (Mu) Validation Using Various Types Of Dosimeters For Commissioning Small Field In Eclipse™ Treatment Planning System, Sammuel Mamesa

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of this study was to investigate the differences of calculated MU between commissioning using corrected FOF from single detector and commissioning using average uncorrected FOF from three detectors. Measurements were carried out on 6 MV flattened photon beams from 1x1 cm2 to 10x10 cm2. Four detectors were utilized to measure depth doses and beam profiles: IBA CC01, IBA PFD, IBA EFD and Sun Nuclear EDGE. For FOF determination, Sun Nuclear EDGE was not used. The determination of FOF was classified into corrected FOF according to IAEA/AAPM TRS 483 and uncorrected FOF from three detectors. Commissioning was undertaken in …

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