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ผลกระทบเชิงเศรษฐกิจของการจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทย, ชวัลวิทย์ โตจิต Jan 2022

ผลกระทบเชิงเศรษฐกิจของการจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทย, ชวัลวิทย์ โตจิต

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษาครั้งนี้มีวัตถุประสงค์เพื่อศึกษาผลกระทบเชิงเศรษฐกิจของการจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทย และวิเคราะห์โอกาสการจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทย ดำเนินการเก็บข้อมูลด้วยวิธีการสัมภาษณ์เชิงลึกโดยผู้ให้ข้อมูลแบ่งออกเป็น 5 กลุ่ม ได้แก่ หน่วยงานที่เกี่ยวข้องกับการขนส่งสินค้าทางอากาศ, สถาบันการศึกษา, สายการบิน, ตัวแทนการขนส่งสินค้าทางอากาศ และผู้ประกอบการส่งออก จำนวน 31 คน แล้วนำมาวิเคราะห์ ด้วยวิธีการวิเคราะห์เนื้อหา ผลการวิจัย พบว่า 1) การจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทย ส่งผลกระทบเชิงเศรษฐกิจทั้งในระดับจุลภาคและมหภาคต่อประเทศ ประกอบไปด้วย ด้านการดำเนินงานที่มีประสิทธิภาพมากขึ้น ด้านการจ้างงานที่เพิ่มขึ้น ด้านการพัฒนาโครงสร้างพื้นฐานในทุกภาคส่วน ด้านการแข่งขันในตลาด ด้านรายรับและรายจ่ายของรัฐบาล ด้านการบูรณาการทางการค้าและเศรษฐกิจ จวบจนถึงผลกระทบต่อผู้บริโภคภายในประเทศ และ 2) จากการสัมภาษณ์เชิงลึกกลุ่มผู้ให้ข้อมูลที่เกี่ยวข้องกับธุรกิจขนส่งสินค้าทางอากาศ ให้ความคิดเห็นว่า โอกาสในการจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทยนั้น หน่วยงานที่เกี่ยวข้องจำเป็นต้องหาแนวทางในการพัฒนาและส่งเสริมเพื่อเพิ่มปริมาณของสินค้าสำหรับการส่งออก ทั้งภายในประเทศและต่างประเทศให้เพิ่มมากขึ้น จนถึงระดับที่การให้บริการของเครื่องบินประเภทผู้โดยสารในปัจจุบันไม่สามารถรองรับไหว จนจำเป็นต้องจัดตั้งสายการบินขนส่งเฉพาะสินค้าระยะไกล สัญชาติไทยมาให้บริการ ผลักดันให้ประเทศไทยเป็นศูนย์กลางด้านโลจิสติกส์

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The Effect Of High Dose Ascorbic Acid And High Dcad Administration On Oxidative Stress And Mammary Gland Function Of Dairy Goat Fed Under Tropical Condition, Sapon Semsirmboon Jan 2022

The Effect Of High Dose Ascorbic Acid And High Dcad Administration On Oxidative Stress And Mammary Gland Function Of Dairy Goat Fed Under Tropical Condition, Sapon Semsirmboon

Chulalongkorn University Theses and Dissertations (Chula ETD)

High ambient temperature (HTa) increased the respiration rate (RR) and rectal temperature (Tr) of dairy goats. The excess response resulted in acid-base imbalance, electrolyte imbalance, and systemic oxidative which could indirectly affect the mammary gland. Besides, HTa did directly alter cell function, and this has been proposed to be mediated by oxidative stress. We previously showed that high dietary cation and anion differences (DCAD) could decrease the HTa effect. In dairy cows, a high dose ascorbic acid (Asc) has been used to decrease oxidative stress. Then, It was hypothesized whether mammary gland function could be altered when the HTa was …

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Effects Of Fingerroot (Boesenbergia Rotunda) Powder On Egg Performance, And Quality, Egg Yolk Malondialdehyde In Laying Hens, Miftah Nurfarid Jan 2022

Effects Of Fingerroot (Boesenbergia Rotunda) Powder On Egg Performance, And Quality, Egg Yolk Malondialdehyde In Laying Hens, Miftah Nurfarid

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to determine the effect of fingerroot powder supplementation on the performance of laying hens, egg quality, and malondialdehyde in the egg yolk. A total of 192 Hy-Line brown laying hens aged 43 weeks were divided into four treatment groups with 48 hens in each group (8 replicates; 6 birds each). The treatments were the control (basal diet), basal diet supplemented with vitamin E at 250 mg/kg, basal diet plus 20 g fingerroot powder/kg, and basal diet plus 40 g fingerroot powder/kg. Performance parameters were analyzed in the following two experimental period: 1 to 3 week and 4 …

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Microencapsulation Of Basil Oil And Its Effect On Replacement Of Antibiotic Growth Promoter, Antioxidant Status And Gut Functions Of Broilers, Sureerat Thuekeaw Jan 2022

Microencapsulation Of Basil Oil And Its Effect On Replacement Of Antibiotic Growth Promoter, Antioxidant Status And Gut Functions Of Broilers, Sureerat Thuekeaw

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objectives of this work were 1) to study the preparation and characterization of microencapsulated basil oil (MBO), 2) to determine the stability of MBO against simulated gastrointestinal tract and storage 3) to investigate the antimicrobial and antioxidant properties of MBO and 4) to evaluate the supplementation of MBO on growth performance, antioxidant status, ileal digestibility and intestinal morphology in broiler chickens. The present work demonstrates the use of double-layered polymers (chitosan, CS and sodium alginate, SA) with opposite charges leading to a dual pH responsiveness. The double-layered microcapsule was studied on physicochemical characteristics, the swelling performance as well as …

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Stochastic Control Model With Carrying Capacity Of Population Management Policy For Squirrels In Durian Orchards, Sasiwimol Auepong Jan 2022

Stochastic Control Model With Carrying Capacity Of Population Management Policy For Squirrels In Durian Orchards, Sasiwimol Auepong

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this thesis, the problem that squirrels ruin durian, which is an economic important fruit in Thailand, is considered. We seek for a strategy on squirrel elimination under the consideration that squirrels are not alien species in Thailand and also orchard ecosystem. The problem is solved through a stochastic control model. The population dynamics of squirrels is constructed as a controlled stochastic differential equation with carrying capacity, since we consider the squirrel population in a confined orchard. A performance index indicating the total benefit of a given squirrel elimination strategy is provided. The index comprises the countermeasure cost, resources loss, …

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Random Forest Of Mixed Decision Trees And Minority Condensation Decision Trees For Class Imbalanced Problem, Suvaporn Homjandee Jan 2022

Random Forest Of Mixed Decision Trees And Minority Condensation Decision Trees For Class Imbalanced Problem, Suvaporn Homjandee

Chulalongkorn University Theses and Dissertations (Chula ETD)

No abstract provided.

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Enhanced Triacylglycerol Production In Chlorella Vulgaris By Flux Balance Analysis On Metabolic Network, Issalapap Kaothong Jan 2022

Enhanced Triacylglycerol Production In Chlorella Vulgaris By Flux Balance Analysis On Metabolic Network, Issalapap Kaothong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Triacylglycerol (TAG) is a type of lipid that can be produced by a microalga called Chlorella vulgaris, which is a promising source of biodiesel. However, there is a lack of research and models explaining how to directly produce this lipid. To address this, we propose using linear minimization of metabolic adjustment (LMOMA), which predicts gene manipulation effects based on Flux Balance Analysis (FBA), to enhance TAG production. We conducted single-gene deletion experiments on the genome-scale metabolic model of C. vulgaris UTEX 395 (iCZ843) under different growth conditions: heterotrophy, photoautotrophy, and mixotrophy conditions. We found that the TAG production increased by …

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Comparative Analysis Of Mutational Landscapes Identified From Exome Sequencing Of Tumor Tissues And Circulating Tumor Dna, Julanee Leenanitikul Jan 2022

Comparative Analysis Of Mutational Landscapes Identified From Exome Sequencing Of Tumor Tissues And Circulating Tumor Dna, Julanee Leenanitikul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Next-generation sequencing of circulating tumor DNA (ctDNA) has been used as a noninvasive alternative for cancer diagnosis and characterization of tumor mutational landscape. However, low ctDNA fraction and other factors can limit the ability of ctDNA analysis to capture tumor-specific and actionable variants. In this study, whole-exome sequencings (WES) were performed on paired ctDNA and tumor biopsy in 15 cancer patients to assess the extent of concordance between mutational profiles derived from the two source materials. We found that up to 16.4% ctDNA fraction can still be insufficient for detecting tumor-specific variants and that high concordance with tumor biopsy is …

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Analysis Of Expression Patterns Of Brassinosteroid-Responsive Genes In Arabidopsis Root Using Single-Cell Rna Sequencing Datasets, Thanaporn Wongkham Jan 2022

Analysis Of Expression Patterns Of Brassinosteroid-Responsive Genes In Arabidopsis Root Using Single-Cell Rna Sequencing Datasets, Thanaporn Wongkham

Chulalongkorn University Theses and Dissertations (Chula ETD)

Brassinosteroid (BR) plays a complex role in root growth and development by regulating the expression of downstream target genes through the BR signaling pathway. In this scRNA-seq study of Arabidopsis roots, tissue- and developmental-specific roles of BR were identified. Atrichoblast, an epidermal cell that develops into a non-hair cell, displayed the highest enrichment of BR-induced genes in the elongation and maturation zones among all cell types. Trajectory analysis revealed distinct expression patterns of BR biosynthesis and signaling genes between atrichoblasts and trichoblasts. Atrichoblasts exhibited higher expression levels of BR biosynthesis genes (DET2 and ROT3) and BR signaling genes (BRI1 and …

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Whole Genome Sequencing, De Novo Assembly, And Comparative Analysis Of Varanus Salvator And Megaustenia Siamensis, Wanna Chetruengchai Jan 2022

Whole Genome Sequencing, De Novo Assembly, And Comparative Analysis Of Varanus Salvator And Megaustenia Siamensis, Wanna Chetruengchai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: Understanding the animal genome structure and function is pivotal for expanding our current knowledge of evolution, biodiversity, cosmeceutical and medical applications. Each species has a unique characteristic feature. Varanus salvator is a reptile (vertebrate) prevalent in Thailand. It has evolved over millions of years to adapt and survive in urban environments, polluted canals, and garbage dumps. It still survives without noticeable effects. Megaustenia siamensis, an invertebrate, is famous for its ability to produce biological adhesive substances enabling it to stick to trees’ leaves even in heavy rain. However, there is very little genomics or transcriptomics data for V. salvator …

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The Role Of B1 Methylation, Physiologic Replication Independent Endogenous Dna Double Strand Breaks (Phy-Rind-Edsb) And Laminin 511 E8 Proteins In Rat Second Degree Burn Wound Healing, Jiraroch Meevassana Jan 2022

The Role Of B1 Methylation, Physiologic Replication Independent Endogenous Dna Double Strand Breaks (Phy-Rind-Edsb) And Laminin 511 E8 Proteins In Rat Second Degree Burn Wound Healing, Jiraroch Meevassana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: DNA methylation via short interspersed nuclear element (SINE) small interfering (si)RNA prevents DNA damage and promotes cell proliferation. Furthermore, laminin α5 β1 γ1(LM511) is an extracellular structural protein that can support epithelial cell adhesion and migration. Box A of high-mobility group box 1 protein (Box A of HMGB1) is a common nuclear protein in eukaryotic cells that can reduce DNA damage response toward burn injury. Objective: To investigate whether treatment of burn wounds using B1 siRNA, Box A of HMGB1 and LM511-E8 fragment improved wound closure in a rat second-degree burn wound model. Methods: I performed a cross-sectional analytical …

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The T Cell Senescence In Breast Cancer, Sikrit Denariyakoon Jan 2022

The T Cell Senescence In Breast Cancer, Sikrit Denariyakoon

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: The cancer-immune cell crosstalk is a common immune-evasion mechanism of cancer. This crosstalk can result in epigenetic changes in immune phenotypes to accelerate tumor growth and metastasis. Senescent T lymphocytes are formed during T cell differentiation, and are recently described as one of the dysfunctional T cells in cancer. In breast cancer, estrogen does not only regulate normal physiology in females, but is also involved in cancer development and cancer treatment. It may also attenuate senescent phenotypes, and increase DNA damage in several cell-lines. This thesis therefore examined for the presence of senescent T lymphocytes in breast cancer patients, …

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Identification And Application In Plant Of Plant Growth-Promoting Endophytic Bacteria, Kanchana Sitlaothaworn Jan 2022

Identification And Application In Plant Of Plant Growth-Promoting Endophytic Bacteria, Kanchana Sitlaothaworn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Seventy-eight endophytic bacteria isolated from 15 plant samples in Thailand including 50 isolates from sugarcane root samples obtained from 6 Provinces and 28 isolates from stems and leaves of healthy plants in Kanchanaburi Province, were identified and evaluated for plant growth promoting capability using rice as a plant model. They were identified as Gluconacetobacter (37 isolates), Pantoea (14 isolates), Burkholderia (2 isolates), Pseudomonas (4 isolates), Priestia (4 isolates), Enterobacter (2 isolates), Acinetobacter (2 isolates), Novosphingobium (2 isolates), Curtobacterium (2 isolates), and each of Nguyenibacter, Aureimonas, Bacillus, Peribacillus, Sphingobium, Staphylococcus, Brevibacillus, Aneurinibacillus, and Pseudarthrobacter based on their phenotypic characteristics and 16S …

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Anti-Pathogenic Yeast Malassezia Globosa Activity By Propolis Of Stingless Bee Geniotrigona Thoracica, Kawisara Konsila Jan 2022

Anti-Pathogenic Yeast Malassezia Globosa Activity By Propolis Of Stingless Bee Geniotrigona Thoracica, Kawisara Konsila

Chulalongkorn University Theses and Dissertations (Chula ETD)

Malassezia globosa is a lipophilic pathogen which relates to various chronic skin diseases. Azole drugs are main available treatments, but they have been reported with many side effects and microbial drug resistance. Therefore, the alternative medications should be developed. As the antimicrobial activity of propolis is outstanding, this study aims to investigate the potential of propolis from stingless bee, Geniotrigona thoracica against the pathogenic yeast. The extraction and characterization of the propolis components were done after the obtained extracts were evaluated for anti-M. globosa growth by using agar well diffusion assay and broth microdilution assay. Moreover, Inhibitory Concentration values at …

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Antiproliferative Agents From Mushroom Phellinus Sp., Kulrut Pichayaphinyo Jan 2022

Antiproliferative Agents From Mushroom Phellinus Sp., Kulrut Pichayaphinyo

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this study, Phellinus powdered (600 g) was extracted with methanol and DI water. The methanolic crude extract of the mushroom was partitioned with hexane, dichloromethane, ethyl acetate and methanol respectively. All crude extracts were evaluated antiproliferative activity against lung cancer (A549) and neuroblastoma (SH-SY5Y) cell lines by MTT assay. It was found that the dichloromethane extract (CDE) exhibited the strongest antiproliferative activity with half maximal inhibitory concentration (IC50) values of 132.4 and 106.87 µg/mL against human lung cancer and neuroblastoma cell lines, respectively. The ethyl acetate extract (CEE) exhibited moderate antiproliferative activity with IC50 values of 138.64 and >250 …

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Effect Of Genipin Cross-Linking On Properties Of Chitosan Based Bio-Composite Film, Patthrare Inthamat Jan 2022

Effect Of Genipin Cross-Linking On Properties Of Chitosan Based Bio-Composite Film, Patthrare Inthamat

Chulalongkorn University Theses and Dissertations (Chula ETD)

Active packaging from chitosan film incorporated with astaxanthin is limited commercial application in the food industry due to its high moisture permeability and poor tensile strength. To overcome these problems, crosslinking of the film with genipin and heat curing to improve film properties were proposed. Firstly, the effects of genipin concentration on the physical, moisture barrier and mechanical properties of chitosan films incorporated with astaxanthin were investigated. Chitosan film was prepared by mixing chitosan in 2% (w/w) lactic acid. The chitosan was incorporated with astaxanthin at 0 and 1% (w/w of chitosan) (marked as CS and CA or CSA) and …

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Formation Control Of Mobile Robot Swarm In Search Operation, Chanun Asavasirikulkij Jan 2022

Formation Control Of Mobile Robot Swarm In Search Operation, Chanun Asavasirikulkij

Chulalongkorn University Theses and Dissertations (Chula ETD)

The use of swarm mobile robots has emerged as a promising approach to enhance search efficiency in various applications. This thesis focuses on proposing an effective design and fabrication methodology for a swarm mobile robot system based on the Robot Operating System (ROS) framework. Additionally, a novel network architecture is presented to improve communication efficiency among the robots. The primary objective of this research is to investigate the formation control of swarm mobile robots and their superior ability in search operations. Through extensive experiments and quantitative analysis, the performance of the proposed formation control strategy is evaluated in terms of …

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A Learning And Development With Collaborative Note- Taking Model For Enhancing The Future Higher Education Students’ Workforce Skills In Socio-Emotional Regulation And Grit Based On A Web 5.0 Approach, Suthanit Wetcho Jan 2022

A Learning And Development With Collaborative Note- Taking Model For Enhancing The Future Higher Education Students’ Workforce Skills In Socio-Emotional Regulation And Grit Based On A Web 5.0 Approach, Suthanit Wetcho

Chulalongkorn University Theses and Dissertations (Chula ETD)

The multi-methods research and development (R&D) aim to: 1) investigate the socio-emotional regulation framework to promote higher education students' future workforce skills in social and emotional regulation and grit, 2) investigate how socio-emotional regulation impacts grit based on instructional technology via online social collaborative note-taking in the web 5.0, and 3) define the design principle on the implication of the instructional technology via online social collaborative note-taking to the web 5.0. In this study, 365 graduate students from multi-stage random sampling participated in the online survey, 5 experts and 11 graduate students with purposive selection participated in the design research …

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Effect Of Drop-Out Layers Inside Recurrent Neural Networks In Household Load Forecast Application, Sanaullah Soomro Jan 2022

Effect Of Drop-Out Layers Inside Recurrent Neural Networks In Household Load Forecast Application, Sanaullah Soomro

Chulalongkorn University Theses and Dissertations (Chula ETD)

Ensuring precise power load forecasting is highly important in planning the secure, steady, and cost-effective functioning of the power system. Grid planning and decision-making can be based on accurate long- and short-term power load forecasting. Recently, machine learning techniques have gained widespread adoption for both long- and short-term power load forecasting. Specifically, the Long Short-Term Memory (LSTM) is customized for time series data analysis. This research proposes an LSTM model for forecasting the power load of a single house containing electrical appliances over the next 20 days. We conducted a comparative analysis of the impact of dropout layers in load …

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Performance Analysis Of Jpeg Xr With Deep Learning-Based Image Super-Resolution, Taingliv Min Jan 2022

Performance Analysis Of Jpeg Xr With Deep Learning-Based Image Super-Resolution, Taingliv Min

Chulalongkorn University Theses and Dissertations (Chula ETD)

The demand for efficient high-level image and video codec compression has widely increased. Conventional image compression methods such as JPEG XR use a high quantization parameter (QP) to produce a highly compressed file for any given image. However, higher QP has unpleasing artifacts that lead to perceptual quality degradation. A feasible solution to tackle this limitation is to reduce the high-resolution image size by downsampling it before encoding it with JPEG XR. Then, the super-resolution algorithm is applied to the resultant low-resolution image to reconstruct the high-resolution result. In this research, we downsample the input image before JPEG XR. Then, …

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Digital Reading On Eil Materials For Thai Undergraduate Students, Nopphanan Adungdejjaroon Jan 2022

Digital Reading On Eil Materials For Thai Undergraduate Students, Nopphanan Adungdejjaroon

Chulalongkorn University Theses and Dissertations (Chula ETD)

This exploratory study had two research objectives. First, it aimed to investigate digital reading on EIL materials for Thai undergraduate students and, second, explore students' perceptions towards digital reading on EIL materials. The study involved two hundred and ninety-nine undergraduate students enrolled in an aviation business management program. The EIL Digital Reading Questionnaire is to collect quantitative data, while the semi-structured interview is to collect qualitative data. The result from descriptive statistics of the questionnaire and thematic analysis of the semi-interview reported that Thai undergraduate students tended to encounter, engage, and evaluate EIL materials frequently. Most of the participants strongly …

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Effects Of The Writing Instructional Model With Integration Of Inquiry-Based Learning And Visual Literacy On 21st Century Skills Of Efl Learners, Patsawut Sukserm Jan 2022

Effects Of The Writing Instructional Model With Integration Of Inquiry-Based Learning And Visual Literacy On 21st Century Skills Of Efl Learners, Patsawut Sukserm

Chulalongkorn University Theses and Dissertations (Chula ETD)

Although a body of research illustrates the potential of inquiry-based learning in promoting the 21st century skills among English as a Foreign Language (EFL) students (AbuRezeq, 2018; Imansyan et al., 2019; Milatasari, 2013; Palupi et al., 2020; Tongjean et al., 2019), other studies have indicated its occasional failure in eliciting students’ engagement (Duschl & Wright, 1989; Gill, 2005), which affects students’ success in language learning. This results in the need to leverage other pedagogical strategies, including visual literacy, to increase the efficacy of inquiry-based learning (Gonzalez-Ledo, 2015; Maricimoi, 2017; Navidinia et al., 2018; Rokhaniyah, 2019, Sulastri, 2019; Tayib, 2015; Villasor, …

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Knowledge, Attitude And Practices On Potato Pest Management Of Ethnic Farmers In Southern Shan State, Myanmar, Pyae Pa Pa Aung Jan 2022

Knowledge, Attitude And Practices On Potato Pest Management Of Ethnic Farmers In Southern Shan State, Myanmar, Pyae Pa Pa Aung

Chulalongkorn University Theses and Dissertations (Chula ETD)

Potato is cultivated as the main tuber crop which is essential for ethnic farmers’ household income in Southern Shan State, Myanmar. Most ethnic farmers use chemical pesticides widely to enhance crop yield and to control pests in the farm. The use of chemical pesticides could lead to a series of health impacts of the farmers and environmental issues. The main aim of the study is to explore farmers’ knowledge, attitude and current farm practices on pest management in potato production. The participants of 100 farmers were chosen from each village with a cluster and purposive sampling technique using structured questionnaires …

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Development Of High Protein Beverage From Hydrolyzed Egg White, Nuntorn Charoensak Jan 2022

Development Of High Protein Beverage From Hydrolyzed Egg White, Nuntorn Charoensak

Chulalongkorn University Theses and Dissertations (Chula ETD)

The primary objective of this study was to examine the impact of enzymatic treatment on pasteurized egg white protein (EWP) and assess its influence on various physicochemical properties and antioxidant activity. Our findings revealed that the addition of SDAY10 enzymes led to a significant increase in lightness (L*), redness (a*), and yellowness (b*) parameters. Furthermore, higher concentrations of the enzyme resulted in a considerable reduction in pH, viscosity, and volume mean diameter (D4,3) of EWP protein compared to the control group (P < 0.05). Additionally, the application of SDAY10 enzyme (0.1-0.3% w/v) for EWP hydrolysis exhibited a noteworthy enhancement in antioxidant activity (measured by DPPH, ABTS, and FRAP assays) compared to lower enzyme concentrations. Notably, the 0.3% concentration of SDAY10 exhibited the highest release of amino acids during in vitro digestion and received the highest sensory evaluation score. Consequently, employing SDAY10 enzymes at a concentration of 0.3% w/v for EWP hydrolysis demonstrates significant potential for improving the physical properties of EWP and enhancing antioxidant activity. However, it is imperative to investigate the sensory evaluation with regards to the bitterness of the product developed using such enzymes.

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Effects Of Heat And Uv-C Curing On Properties Of Soy Protein Film, Tanjina Akter Jan 2022

Effects Of Heat And Uv-C Curing On Properties Of Soy Protein Film, Tanjina Akter

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to investigate the effects of heat curing and UV-C curing on properties of soy protein film. Both the heat and UV-C treatments were applied to either film-forming solution or pre-formed film. In the first part, film-forming solution or pre-formed film was cured at 60, 70, or 80°C for 2, 4, or 6 h. Heat curing had no effect on film thickness (p>0.05), but it did improve tensile strength of the films. Pre-formed film cured at 70°C for 4 h exhibited the highest tensile strength (3.49 MPa), which was 1.8 times higher than the control. Increasing Raman …

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Development And Validation Of Smartphone Nutrition Application For Supporting Dietetic Professional Practice, Thanasak Tantichaiyakul Jan 2022

Development And Validation Of Smartphone Nutrition Application For Supporting Dietetic Professional Practice, Thanasak Tantichaiyakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Advancements in technology have allowed for the development of applications for supporting the nutrition care process. The objectives of this study were to develop and validate a nutrition application incorporating the food and nutrtion databases, and to assess the satisfaction of dietitians toward the developed application. Seventy registered dietitians were recruited to evaluate two sets of the food photographs prepared based on Thai food exchange list (Thai FEL) and Thai food based dietary guideline (Thai FBDG) for three consecutive days. The participants estimated and calculated manually using calculators, following by using the application. The participants’ satisfaction indicated acceptance (overall score …

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Lead Removal From Water By Modified Activated Carbon Produced From Banana Stem, Imelda Octa Tampubolon Jan 2022

Lead Removal From Water By Modified Activated Carbon Produced From Banana Stem, Imelda Octa Tampubolon

Chulalongkorn University Theses and Dissertations (Chula ETD)

Banana stem-activated carbon (BSAC) and modified banana stem-activated carbon, containing sulfur, nitrogen, and oxygen-containing groups derived from banana stem, were prepared and studied for Pb(II) ion removal. The materials were characterized by scanning electron microscopy, X-Ray diffraction, surface area analysis, and Fourier transform infrared spectroscopy. SEM images showed that the materials are porous, and XRD confirmed that the structures are amorphous and resemble the graphitic hexagonal structure of carbon materials. Surface areas of these materials ranged from 517.67 m2/g for the bare banana stem activated carbon to 234.03, 453.74, 252.97, and 22.96 m2/g for sulfur, oxygen, sulfur and oxygen and …

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The Potential Risk And Occupational Exposure Of Pesticides Among Rice Farmers In Delta Ayeyarwady Division, Myanmar, Moe Thu Khin Jan 2022

The Potential Risk And Occupational Exposure Of Pesticides Among Rice Farmers In Delta Ayeyarwady Division, Myanmar, Moe Thu Khin

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aims to assess the potential risk and occupational exposure of pesticides among rice farmers in the Delta Ayeyarwady Region, Myanmar. A cross-sectional study was carried out with 454 rice farmers from March-April 2022. Data collection was done through face-to-face interviews used with a semi-structured questionnaire. The study showed that the mean age of farmers was 44.36 years old while the range was 16 and 74 years old. Rice farmers' average weight (± standard deviation) was 56.86 (± 7.30) kg. In this study, over two-thirds of the rice farmers (77 %) had a moderate level of knowledge regarding environmental …

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Assessment Of Greenhouse Gases Emissions From Dairy Cattle Production In Thailand, Phoo Pwint Pwint Thu Jan 2022

Assessment Of Greenhouse Gases Emissions From Dairy Cattle Production In Thailand, Phoo Pwint Pwint Thu

Chulalongkorn University Theses and Dissertations (Chula ETD)

Thailand’s agriculture sector plays a vital role in driving economic growth. Globally, livestock production is estimated to contribute about 18% of greenhouse gas (GHG) emissions. Despite its importance, there is a relative lack of research on GHGs assessment in the livestock sector in Thailand. The aim of this research was to estimate GHGs emissions from dairy cattle production in Saraburi and Ratchaburi provinces of Thailand. The 2019 Refinement to the 2006 IPCC guidelines for national greenhouse gas inventories was applied in this research. Twenty dairy farms (n=20) including both small farms (n=10) and medium farms (n=10) were selected as the …

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Forecasting Cane Sugar Production Under Climate Change And Human-Ecotoxicological Impact, Arisara Tachabunya Jan 2022

Forecasting Cane Sugar Production Under Climate Change And Human-Ecotoxicological Impact, Arisara Tachabunya

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study forecasted sugar cane yield and cane sugar production using stepwise multiple linear regression (MLR) and autoregressive integrated moving average (ARIMA). Then, impacts on human health and ecosystems at the endpoint level were evaluated using openLCA software version 1.10.3 and the ReCiPe 2016 method. The functional units were the production of 1 kg raw sugar, 1 kg granulated sugar, and 1 kg refined sugar at Tamaka Sugar Industry Co., Ltd., Kanchanaburi province, Thailand. The result revealed that relative humidity at the Thong Pha Phum meteorological station, maximum temperature at the Kanchanaburi meteorological station, and oceanic Niño Index (ONI) were …

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