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The Effects Of Co-Ingestion Of Highly Branched Cyclic Dextrin And Dietary Nitrate On Physiological Responses And Endurance Capacity In Recreational Endurance Runners, Songdhasn Chinapong Jan 2022

The Effects Of Co-Ingestion Of Highly Branched Cyclic Dextrin And Dietary Nitrate On Physiological Responses And Endurance Capacity In Recreational Endurance Runners, Songdhasn Chinapong

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to investigate the effects of co-ingestion of HBCD and dietary nitrate on physiological responses and endurance capacity in recreational endurance runners compared with an isocaloric HBCD beverage, a maltodextrin-dietary nitrate beverage, and a maltodextrin beverage during high-intensity prolong running. Nine male marathon runners (age 35.00 ± 4.00 years) participated in a double-blind crossover design, where they were randomly assigned to receive either the co-ingesting 1.5 g HBCD·kg-1 BM and 500 mg dietary NO3- (~8.00 mmol NO3-) beverages (HBCD+NO3-), the ingesting 1.5 g HBCD·kg-1 BM (HBCD), the co-ingesting 1.5 g MD·kg-1 BM and 500 mg dietary NO3- (~8.00 …

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Innovation Process Of Amorphous Cellulose - Graphene Oxide Hybrid Structure For Water Treatment In A Shrimp Farm, Kongkiat Phuphantrakun Jan 2022

Innovation Process Of Amorphous Cellulose - Graphene Oxide Hybrid Structure For Water Treatment In A Shrimp Farm, Kongkiat Phuphantrakun

Chulalongkorn University Theses and Dissertations (Chula ETD)

Amorphous cellulose-graphene oxide bead composites are popularly employed in water purification. However, the existing fabrication methods of amorphous cellulose (AC) and amorphous cellulose-graphene oxide (ACGO) beads are complicated with many chemical use, multi-step, time and energy-consuming. In this research, we proposed an efficient method for fabricating amorphous cellulose-graphene oxide (ACGO) beads using less chemical under a simple 2-step approach. The production process of AC and ACGO beads was successfully fabricated via sulfuric acid (H2SO4) gelatinization and regeneration using eucalyptus paper as a raw material. The cellulose gel was droplet-extruded into deionized (DI) water and transformed into a solid bead via …

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Challenges Of Ngos In Facilitating Access To Health Care Services For The Urban Poor In Slums During The Covid-19 Pandemic: A Case Study Of Kampala, Uganda||ความท้าทายขององค์กรนอกภาครัฐในการช่วยเหลือการเข้าถึงบริการการดูแลสุขภาพสำหรับคนจนเมืองในชุมชนแออัดในช่วงการระบาดของโรคติดเชื้อไวรัสโคโรนา 2019 กรณีศึกษา กรุงกัมปาลา ประเทศยูกันดา, Brendah Kyaterekera Jan 2022

Challenges Of Ngos In Facilitating Access To Health Care Services For The Urban Poor In Slums During The Covid-19 Pandemic: A Case Study Of Kampala, Uganda||ความท้าทายขององค์กรนอกภาครัฐในการช่วยเหลือการเข้าถึงบริการการดูแลสุขภาพสำหรับคนจนเมืองในชุมชนแออัดในช่วงการระบาดของโรคติดเชื้อไวรัสโคโรนา 2019 กรณีศึกษา กรุงกัมปาลา ประเทศยูกันดา, Brendah Kyaterekera

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study investigates the challenges NGOs face in providing healthcare access to the urban poor during the COVID-19 pandemic, using cases of slum communities in Kampala, the capital city of Uganda. The COVID-19 pandemic has disproportionately affected vulnerable populations, including those living in slums characterized by overcrowding, inadequate infrastructure, and limited access to basic services, especially access to healthcare, a fundamental right of people. During the past years, the pandemic has further restricted the already limited accessibility to healthcare services for the urban poor. The primary research methodology employed in this study is case study research, using in-depth interviews, observations, …

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Housing Choices Of Myanmar Migrants Working In The Central Business District Of Bangkok, Hsu Yee Win Jan 2022

Housing Choices Of Myanmar Migrants Working In The Central Business District Of Bangkok, Hsu Yee Win

Chulalongkorn University Theses and Dissertations (Chula ETD)

Urban migrant workers play a vital role in the economic growth of a country. As housing is a fundamental human need that greatly impacts individual and societal well-being, it is crucial to ensure the welfare of urban migrant workers. While several studies have explored the factors that influence urban migrants' housing choices, limited attention has been paid to the spatial distribution of housing and housing choices among urban migrant workers in Thailand. This study aims to fill this gap by examining the housing locations and determinants of housing choices among Myanmar migrants working in the Central Business District (CBD) of …

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The Relationship Between The Land And Buildings Tax Act, B.E. 2562 (A.D. 2019), And The Land Use And Land Cover (Lulc) Of Bangkok, Thailand, James Anthony Orina Jan 2022

The Relationship Between The Land And Buildings Tax Act, B.E. 2562 (A.D. 2019), And The Land Use And Land Cover (Lulc) Of Bangkok, Thailand, James Anthony Orina

Chulalongkorn University Theses and Dissertations (Chula ETD)

The Land and Buildings Tax Act, B.E. 2562 (A.D. 2019), was enacted in Thailand with the aim of wealth distribution, revenue increase, and discouraging unproductive land use. However, since its implementation in 2020, in Bangkok, a notable increase in land use and land cover (LULC) changes, specifically vacant lands being converted to agricultural lands, has been observed. These changes are hypothesized to be related to tax avoidance activities. This study aims to investigate the phenomenon of vacant-to-agricultural land conversions in Bangkok and employ spatial analysis techniques to identify and locate these LULC changes. By employing a statistical t-test and conducting …

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Assessing The Potential Of Developing An Ecosystem For Electric Scooters In Bangkok, Thailand, Rosyad Yan Wibowo Jan 2022

Assessing The Potential Of Developing An Ecosystem For Electric Scooters In Bangkok, Thailand, Rosyad Yan Wibowo

Chulalongkorn University Theses and Dissertations (Chula ETD)

The rising need for mobility induces challenges to providing a sustainable mode of transportation. The absence in providing door-to-door service by public transportation gives the opportunity for micromobility to take a position. With millions of people commuting every day, Thailand's capital city requires more choices in transportation. E-scooters can travel short distances in a vehicle and are not affected by traffic. However, under the current regulation, e-scooters are not recognized as a mode of transportation in Bangkok which question the existence of the ecosystem of e-scooters in the city. To address the problems, this research focuses on exploring the potential …

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Relationship Of The Relocation Decision And Job Location Of Klong Toei Community's Residents, Shu Hsuan Tang Jan 2022

Relationship Of The Relocation Decision And Job Location Of Klong Toei Community's Residents, Shu Hsuan Tang

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study investigates the relationship between job location and the willingness to relocate of informal settlement residents, using the Klong Toei community in Bangkok as a case study. Informal settlements have emerged due to urbanization and rapid economic growth, especially in developing countries. The Klong Toei community, which has evolved around the Port Authority of Thailand, has become the largest informal settlement in Bangkok. The port authority has tried to reclaim the land occupied by the community and provide relocation options to residents. However, the relocation process encounters challenges as many residents fear losing their livelihoods and express concerns about …

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Molecular Characterization And Antimicrobial Susceptible Profiles Of Thai Mycoplasma Synoviae And Immune Response Chickens Received Live Mycoplasma Synoviae Vaccine, Kriengwich Limpavithayakul Jan 2022

Molecular Characterization And Antimicrobial Susceptible Profiles Of Thai Mycoplasma Synoviae And Immune Response Chickens Received Live Mycoplasma Synoviae Vaccine, Kriengwich Limpavithayakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Mycoplasma synoviae infection in chickens which has been increasing worldwide is mostly controlled by pathogen-free flocks’ maintenance, medication in infected flocks and vaccination in high-risk flocks. The effective control strategy requires the information of diagnostic assays for detecting and differentiating M. synoviae strains, the understanding of immune response mechanisms in vaccinated chickens, and the reliable drug susceptible evidents for making decision in antimicrobial usage. This study aimed to develop a convenient assay for evaluation of quality or uniformity of vaccination with live MS-H vaccine, to characterize the immune response mechanisms in chickens receiving 3 different vaccination programs immunizing single dose …

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Role Of Kca3.1 Channel On Renal Fibrosis In Doxorubicin-Induced Feline Kidney Cell Line, Penpicha Kuedbantakien Jan 2022

Role Of Kca3.1 Channel On Renal Fibrosis In Doxorubicin-Induced Feline Kidney Cell Line, Penpicha Kuedbantakien

Chulalongkorn University Theses and Dissertations (Chula ETD)

Feline renal fibrosis is the most common outcome of chronic kidney disease in cats. Nowadays, there is no specific treatment and the mechanism of fibrosis in cats is still unknown. Intermediate conductance Ca2+ activated K+ channel (KCa3.1) plays an important role in novel therapy for organ fibrosis in many species. Transforming growth factor- β (TGF-β)/Smad signaling pathway and KCa3.1 has been shown to relate to renal fibrosis. This study aimed to investigate the relationship between KCa3.1 and feline renal fibrosis via TGF-β/Smad signaling pathway. CRFK cultures were induced with doxorubicin (DOX) to generate feline renal fibrosis model. Triarymethane-34 (TRAM-34), selective …

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Effects Of Microplastics On Gene Expression To Nonspecific Immune System In Pacific White Shrimp (Litopenaeus Vannamei)., Songsak Niemcharoen Jan 2022

Effects Of Microplastics On Gene Expression To Nonspecific Immune System In Pacific White Shrimp (Litopenaeus Vannamei)., Songsak Niemcharoen

Chulalongkorn University Theses and Dissertations (Chula ETD)

Microplastics pollution effects are increasingly observed as new studies emerge in different ecosystem and organismal levels. It is becoming clear that exposure to different types of microplastic can impair the nonspecific immune system of crustaceans. Therefore, this study investigated the impact of high-density polyethylene microplastic particles (HDPE-MP) in feed on nonspecific immune system gene expression of Pacific white shrimp (Litopenaeus vannamei). The LC50 at day 28 of HDPE-MP ingestion was 3.074% w/w of food. Superoxide dismutase (SOD) and the Glutathione peroxidase (GPx) gene were upregulated significantly in groups supplemented with 0.1 and 0.5% of HDPE-MP and then down-regulated significantly after …

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Estimating Canine Distemper Virus Exposure In Captive Carnivores In Thai Zoos Using A Pseudotype-Based Serum Neutralization Test, Erngsiri Kaewkhunjob Jan 2022

Estimating Canine Distemper Virus Exposure In Captive Carnivores In Thai Zoos Using A Pseudotype-Based Serum Neutralization Test, Erngsiri Kaewkhunjob

Chulalongkorn University Theses and Dissertations (Chula ETD)

Despite its name, Canine distemper virus (CDV) infection is not restricted to canids but extends to several species of the order Carnivora. The extent of CDV exposure in captive carnivores in Thailand has never been estimated before. Therefore, the objective of this study is to estimate CDV exposure in captive carnivores in Thai zoos using a pseudotype-based neutralization assay (SNT). A total of 264 archived serum samples collected between 2005 and 2020 from captive carnivore species from 6 zoos of the Zoological Park Organization of Thailand (ZPOT) (211 samples) and Tiger Kingdom (TK) (53 samples) were tested in this study. …

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Evolution And Phylogenetic Studies Of Porcine Epidemic Diarrhea Virus And Porcine Deltacoronavirus In Thailand From 2008 To 2021, Christopher James Stott Jan 2022

Evolution And Phylogenetic Studies Of Porcine Epidemic Diarrhea Virus And Porcine Deltacoronavirus In Thailand From 2008 To 2021, Christopher James Stott

Chulalongkorn University Theses and Dissertations (Chula ETD)

PEDV and PDCoV are recognized as important pathogens causing enteric disease in swine herds worldwide. During 2014-2015, several outbreaks of PEDV occurred in many provinces in Thailand, and the clinical signs were more severe than those of classical PEDV in Thailand during 2008-2012. Therefore, the new introduction of PEDV or mutated virus strains was suspected. In 2015, PDCoV was also reported in Thailand, making the situation of enteric disease in the Thai swine industry worse. Since genetic classification studies of PEDV and PDCoV had never been done in Thailand before, this study aimed to investigate the genetic diversity of PEDV …

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Situation Analysis And Kap On Antimicrobial Use And Resistance Among Veterinarians And Broiler Poultry Farmers Of Nepal, Manoj Kumar Shahi Jan 2022

Situation Analysis And Kap On Antimicrobial Use And Resistance Among Veterinarians And Broiler Poultry Farmers Of Nepal, Manoj Kumar Shahi

Chulalongkorn University Theses and Dissertations (Chula ETD)

The primary goal of this research was to assess the situation analysis and knowledge, attitude, and practices (KAP) of poultry practitioner veterinarians (PPV) and broiler poultry farmers (BPF) regarding antimicrobial use (AMU) and antimicrobial resistance (AMR) in Nepal. The study area covered approximately 88.1% of Nepal's poultry population. A total of 327 PPV from 56 districts and 500 BPF from 40 districts of seven provinces participated. AMU situation and demographic information were collected and analyzed using descriptive statistics and logistic regression analysis to determine associations between variables. Most PPV were male (85.0%) with a mean age of 31.9±7.8 years. Half …

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Associations Of Feline Paramyxoviruses With Pathological Lesions In Cat Kidneys, Aisyah Nikmatuz Zahro Jan 2022

Associations Of Feline Paramyxoviruses With Pathological Lesions In Cat Kidneys, Aisyah Nikmatuz Zahro

Chulalongkorn University Theses and Dissertations (Chula ETD)

Paramyxoviruses in cats composing of feline paramyxovirus (FPaV), feline morbillivirus genotype 1 (FeMV-1), and feline morbillivirus genotype 2 (FeMV-2). These viruses had been recently suggested to be associated with kidney disease in cats. However, pathological consequence of infection is remained restricted. This study aimed to investigate the association of paramyxovirus infection and pathological consequence in cats’ kidney. Renal fresh tissues were collected from routine necropsy in Department of Pathology, Faculty of Veterinary Science, Then, tissues were histopathologically categorized into normal group and pathologic group. To screen paramyxovirus infection, reverse-transcription polymerase chain reaction (RT-PCR) assays using Res-Mor-Hen pan-primer set and specific …

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Correlation Of The Classical Swine Fever (Csf) Antibody Levels Detected By Serum Neutralizaton And Enzyme-Linked Immunosorbent Assay (Elisa), Chairani Ridha Maghfira Jan 2022

Correlation Of The Classical Swine Fever (Csf) Antibody Levels Detected By Serum Neutralizaton And Enzyme-Linked Immunosorbent Assay (Elisa), Chairani Ridha Maghfira

Chulalongkorn University Theses and Dissertations (Chula ETD)

Classical swine fever is an important viral disease that has a devastating impact on the swine industry. The Enzyme-linked immunosorbent assay (ELISA) provides a simpler and more practical approach to detect classical swine fever virus (CSFV) antibodies compared to the serum neutralization (SN) test. However, antibody responses detected by ELISA cannot directly exhibit a protective level. This study aimed to evaluate the correlation of classical swine fever antibody responses detected by SN assay and commercial ELISA. A total of 522 negative and positive serum samples were tested by the SN and ELISA. Correlation, an agreement between two assays, and comparisons …

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The Infection Dynamics, Co-Infection, Multi-Gene Phylogeny, And Molecular Screening Of Plasmodium Caprae Infection In Goats And Mosquito Species, Hoang Lan Anh Nguyen Jan 2022

The Infection Dynamics, Co-Infection, Multi-Gene Phylogeny, And Molecular Screening Of Plasmodium Caprae Infection In Goats And Mosquito Species, Hoang Lan Anh Nguyen

Chulalongkorn University Theses and Dissertations (Chula ETD)

Ungulate malaria parasites, including Plasmodium caprae that infects the domestic goats, have received little attention. There are only few studies about the prevalence and mitochondrial genome analyses. This study, therefore, aimed to investigate the natural infection dynamics of P. caprae and its mosquito vectors. Besides, genome analyses based on nuclear genes of P. caprae and other related haemosporidian parasites were also carried out to obtain an in depth understanding about their evolutionary history and origin. A total of 423 goat blood samples were collected during rainy seasons from 2018 to 2021 to assess the malaria infection status. In addition, 1,019 …

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Establishment Of Transplantation Platform For Delivering Mouse Induced Pluripotent Stem Cell-Derived Insulin-Producing Cells (Mips-Ipcs) For Diabetes Treatment, Hong Thuan Tran Jan 2022

Establishment Of Transplantation Platform For Delivering Mouse Induced Pluripotent Stem Cell-Derived Insulin-Producing Cells (Mips-Ipcs) For Diabetes Treatment, Hong Thuan Tran

Chulalongkorn University Theses and Dissertations (Chula ETD)

Pancreatic beta-cell replacement is recognized for feasible type 1 diabetes (T1D) treatment. However, in post-transplantation, the autoimmune destruction incidentally attacks the activity and survival of beta-cells are reported in animal and human. To address these concerns, the generation of immortalized, biocompatible beta-cells, and the engraftment platform are insightfully investigated. The stepwise chemical process was used for in vitro Insulin-producing cells (IPCs) production from mouse gingival fibroblast-induced pluripotent stem cells (mGF-iPSCs). The real-time qRT-PCR, glucose stimulation C-peptide/Insulin secretion, immunostaining, and visible cell methods were examined during IPC differentiation. The encapsulated-IPC beads were loaded into subcutaneous pocket space via transplantation platform. Completed …

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Anti-Proliferative And Apoptotic Effect Of Cannabinoids On Human Pancreatic Ductal Adenocarcinoma Xenograft In Balb/C Nude Mice Model, Quang Trung Le Jan 2022

Anti-Proliferative And Apoptotic Effect Of Cannabinoids On Human Pancreatic Ductal Adenocarcinoma Xenograft In Balb/C Nude Mice Model, Quang Trung Le

Chulalongkorn University Theses and Dissertations (Chula ETD)

Human pancreatic ductal adenocarcinoma (PDAC) is a highly malignant and lethal tumor of the exocrine pancreas. Cannabinoids extracted from the hemp plant Cannabis sativa have been suggested as a cancer therapy due to their anti-tumor effects on several human tumors. However, the anti-tumor effect of cannabinoids on human PDAC is still understudied. Therefore, the objective of the current study is to study the inhibition of proliferation and the induction of apoptosis potencies of cannabinoids in PDAC xenograft nude mice model. The human PDAC cell line (Capan-2) was subcutaneously injected into twenty-five nude mice. After tumor reached 200 mm3 in volume, …

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In Vitro Inhibitory Effects Of Turmeric Extracts Against Biofilm Formation And Virulence Of Flavobacterium Oreochromis, Sirawich Ngernson Jan 2022

In Vitro Inhibitory Effects Of Turmeric Extracts Against Biofilm Formation And Virulence Of Flavobacterium Oreochromis, Sirawich Ngernson

Chulalongkorn University Theses and Dissertations (Chula ETD)

Flavobacterium oreochromis is an opportunistic bacteria and causative agent of columnaris disease that affects freshwater fish worldwide. To initiate infection, the bacteria are required to attach and form biofilm on the fish's skin. The bacteria cells in the biofilm then produce toxins that can degrade fish connective tissue, resulting in lesions and ulcers. This study aimed to evaluate the efficacy of turmeric (Curcuma longa L.) extract by three organic solvents (hexane, ethanol, and methanol) in biofilm inhibition and modulation of biofilm-associated genes of F. oreochromis. Turmeric extracts by three different organic solvents were tested for their ability to inhibit the …

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Molecular Characterization Of Clinostomum Spp. Infecting Cultured Snakeskin Gourami (Trichopodus Pectoralis) In Thailand, Sk Injamamul Islam Jan 2022

Molecular Characterization Of Clinostomum Spp. Infecting Cultured Snakeskin Gourami (Trichopodus Pectoralis) In Thailand, Sk Injamamul Islam

Chulalongkorn University Theses and Dissertations (Chula ETD)

The digeanean Clinostomum spp. is a significant parasitic pathogen of freshwater fish. It has low host specificity and a wide distribution geographically. Morphological and molecular data analyses have been performed on Clinostomum to assess its diversity. However, the molecular occurrence of Clinostomum spp. in aquaculture in Thailand has yet to be reported. Snakeskin gourami (Trichopodus pectoralis), a freshwater fish cultured in Thailand, has significant economic importance. Herein, the study focuses on describing a digenean Clinostomum in the abdominal cavity of T. pectoralis and reports the prevalence of this parasite from central Thailand. Two hundred and sixty-two 4 to 8- month-old …

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Seroprevalence Of Lawsonia Intracellularis Antibody Among Swine Herds In Thailand, December 2021-March 2022, Thanh Nguyen Che Jan 2022

Seroprevalence Of Lawsonia Intracellularis Antibody Among Swine Herds In Thailand, December 2021-March 2022, Thanh Nguyen Che

Chulalongkorn University Theses and Dissertations (Chula ETD)

The gastrointestinal infectious diseases caused by bacteria have been a major problem in the Thai swine industry. Porcine proliferative enteropathy (PPE), also known as porcine ileitis, is an enteric infectious disease caused by Lawsonia intracellularis. Porcine ileitis has been an economic threat to the global pork production system due to various types of diarrheas. Serological diagnosis can be applied for determining pathogen-antibodies seroprevalence and the timing of L. intracellularis infection when introduced to the herd. A lack of serological data since 2009, as well as recent antibiotic usage restrictions, may have a negative impact on porcine ileitis seroprevalence in Thailand. …

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Transferable R Plasmids In Escherichia Coli Isolated From Meat Ducks, Zulqarnain Baqar Jan 2022

Transferable R Plasmids In Escherichia Coli Isolated From Meat Ducks, Zulqarnain Baqar

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to describe the AMR characteristics and transferable R plasmids in Escherichia coli isolated from meat ducks reared in an open house system. One hundred seventy-seven (n=177) commensal E. coli were previously isolated from duck cloacal swabs. In this study, all were biochemically confirmed and examined for their susceptibilities to 15 antimicrobial agents by broth microdilution method. Transfer of R plasmids was tested by biparental mating method followed by plasmid replicon typing (PBRT) and plasmid multi-locus sequence typing (pMLST). The highest resistance rates were observed for ampicillin (83.0%) and tetracycline (81.9%) while multidrug resistance was common (86.4%). Extended-spectrum …

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การวิเคราะห์องค์ประกอบเชิงสำรวจของการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิต, กฤฏฐิพนธ์ คันธโกวิท Jan 2022

การวิเคราะห์องค์ประกอบเชิงสำรวจของการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิต, กฤฏฐิพนธ์ คันธโกวิท

Chulalongkorn University Theses and Dissertations (Chula ETD)

การวิเคราะห์องค์ประกอบเชิงสำรวจของการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิต มีวัตถุประสงค์เพื่อ 1) ศึกษาองค์ประกอบของการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิต และ 2) วิเคราะห์องค์ประกอบเชิงสำรวจของการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิต กลุ่มตัวอย่างที่ใช้ในการวิจัยเป็นนักศึกษาปริญญาบัณฑิตจำนวน 466 คน (เพศหญิง 60.7%) อายุเฉลี่ย 19.75 ปี (ส่วนเบี่ยงเบนมาตรฐาน = ± 1.064, ช่วงอายุ = 18-22 ปี) เก็บรวบรวมข้อมูลด้วยแบบวัดการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิตที่มีลักษณะเป็นมาตรวัดประมาณค่าแบบ 5 ระดับ จำนวน 45 ข้อ ที่ทดสอบความตรงเชิงเนื้อหาโดยผู้เชี่ยวชาญ (IOC = 0.80-1.00) และทดสอบความเที่ยงแบบสอดคล้องภายในด้วยค่าสัมประสิทธิ์ของอัลฟ่าครอนบาค (.947) โดยวิเคราะห์คุณภาพขนาดความสัมพันธ์ของตัวแปรด้วยค่า Bartlett’s test of Sphericity พบว่ามีระดับนัยสำคัญทางสถิติที่ระดับ .05 (χ2 = 23413.326, df = 946, p = .00) วิเคราะห์คุณภาพของขนาดกลุ่มตัวอย่างด้วยค่า Kaiser Meyer Olkin (KMO) ได้ค่า KMO เท่ากับ .971 และวิเคราะห์องค์ประกอบเชิงสำรวจด้วยวิธีการวิเคราะห์องค์ประกอบร่วม (Common factor analysis) แบบวิธีแกนหลัก (Principal axis factoring: PAF) และทำการหมุนแกนองค์ประกอบแบบมุมแหลม (Oblique rotation) แบบอ๊อบลิมินตรง (Direct oblimin) ด้วยโปรแกรม SPSS for windows ผลการวิจัยพบว่า 1. องค์ประกอบของการระรานทางไซเบอร์ของนักศึกษาปริญญาบัณฑิตจากการศึกษาสามารถแบ่งได้ออกเป็น 3 ด้าน คือ 1) ด้านผู้ระรานทางไซเบอร์ (Cyber-Perpetrators) สามารถวัดได้จากการใช้ภาษาหยาบคาย การยุยงให้เพื่อนทะเลาะกัน การปล่อยข่าวลือเพื่อทำลายชื่อเสียง การแอบอ้างตัวตนด้วยข้อมูลส่วนตัวของเพื่อน การกีดกั้นเพื่อนจากกลุ่มทางออนไลน์ การเผยแพร่ข้อมูลส่วนบุคคลของเพื่อน การข่มขู่เพื่อน การดูถูกเพื่อนผ่านช่องทางการสื่อสารออนไลน์ การใช้ชื่อผู้ใช้และรหัสผ่านของเพื่อนโดยไม่ได้รับอนุญาต การส่งไวรัสคอมพิวเตอร์เพื่อทำให้เพื่อนเดือดร้อน การทำให้เพื่อนอับอาย การส่งสิ่งที่มีเนื้อหาทางเพศ …

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Hydroxyapatite Nanoparticle And Bone Scaffold To Deliver Microrna-302a-3p For Bone Healing In A Critical-Sized Bone Defect, Pirawish Limlawan Jan 2022

Hydroxyapatite Nanoparticle And Bone Scaffold To Deliver Microrna-302a-3p For Bone Healing In A Critical-Sized Bone Defect, Pirawish Limlawan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Bone tissue engineering is a therapeutic approach for large bone defects. It is being studied to create efficient bone substitution material. However, the autograft with consequence of multiple morbid sites is still a gold standard. This study aimed to use surface modified hydroxyapatite nanoparticle on a 3D-printed tricalcium phosphate/hydroxyapatite (TCP/HA) scaffold to deliver miRNA-302a-3p to enhance bone regeneration as a novel approach for bone tissue engineering. Hydroxyapatite nanoparticles (HA-NPs) were created with hydrothermal method and surface modified with cationic molecule 3-aminopropyltriethoxysilane (APTES) or poly2-(dimethylamino)ethyl methacrylate (PDMAEMA) to enhance miRNA condensation and cellular uptake. The biocompatibility, miRNA condensation ability, cellular uptake …

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Study Of Mutation And Pathomechanism Of Runx2 In Cleidocranial Dysplasia, Sermporn Thaweesapphithak Jan 2022

Study Of Mutation And Pathomechanism Of Runx2 In Cleidocranial Dysplasia, Sermporn Thaweesapphithak

Chulalongkorn University Theses and Dissertations (Chula ETD)

Cleidocranial dysplasia (CCD) is a skeletal disorder affecting the skull, teeth, and clavicles, and is associated with the RUNX2 variants. We identified the five variants from five families, three were novel, comprising c.739delA (p.(Ser247Valfs*)), c.901C>T (p.(Gln301*)), and c.1081C>T (p.(Gln361*)) and two were reported, comprising c.673C>T (p.Arg225Trp) and c.674G>A (p.Arg225Gln). All patients exhibited typical CCD features, but we observed the unreported phenotypes, left forth-ray brachymetatarsia. Moreover, we reviewed the C-terminus RUNX2 variants in the CCD patients and found 81 variants that have been reported. To determine, the pathomechanism of CCD caused by the variants in the C-terminus, …

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Comparison Of Early Stability Betweenaggressive And Non-Aggressive Thread Design Implant, Pawida Pataraprasit Jan 2022

Comparison Of Early Stability Betweenaggressive And Non-Aggressive Thread Design Implant, Pawida Pataraprasit

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background and objective A new type of implant with aggressive threads, called the BLX implant, has been designed to provide greater adhesion to the bone. This study investigates the early implant stability between aggressive (BLX) and non-aggressive (BL) thread implants using Implant Stability Quotient (ISQ) values and Implant stability test (IST) values.) Method BLX and BL implants were placed by block randomization (12 BLX implants, 10 BL implants) following the manufacturer protocol. The insertion torque was recorded. The Implant Stability Quotient (ISQ) values were measured immediately after placement and 6 weeks after implant placement while the Implant stability test (IST) …

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Two-Body Wear Resistance Of Four Different Lithium Disilicate, One Zirconia Reinforced Lithium Silicate, And Two Zirconia Cad/Cam Materials, Suchaya Tantrachoti Jan 2022

Two-Body Wear Resistance Of Four Different Lithium Disilicate, One Zirconia Reinforced Lithium Silicate, And Two Zirconia Cad/Cam Materials, Suchaya Tantrachoti

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: to evaluate the volume loss of four different lithium disilicate, one zirconia reinforced lithium silicate, and two zirconia CAD/CAM materials. Methodology: The test conditions were divided into 8 experimental groups (n=6); Amber mill (AM), milled-Celtra Duo (mCD), fired-Celtra Duo (fCD), IPS emax CAD (EM), n!ce (NI), Rosetta SM (RS), Cercon xt (XT), and IPS emax ZirCAD (ZC). Flat square specimens (8 x8 x4 mm3) were prepared. A spherical steatite (D =6mm) was used as an antagonist. The simulated two-body wear was performed using a chewing simulator (120,000 cycles, 50 N, 1.34 Hz, sliding movement 0.5 mm). The volume loss …

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Effectiveness Of Myofunctional Therapy With Frenectomy In Adult Patients With Obstructive Sleep Apnea And Ankyloglossia, Chanadda Preedeewong Jan 2022

Effectiveness Of Myofunctional Therapy With Frenectomy In Adult Patients With Obstructive Sleep Apnea And Ankyloglossia, Chanadda Preedeewong

Chulalongkorn University Theses and Dissertations (Chula ETD)

In recent years, myofunctional therapy has emerged as a noninvasive treatment modality for patients suffering from obstructive sleep apnea (OSA), owing to its lower cost and reduced risk of serious side effects compared to other therapeutic options. Furthermore, myofunctional therapy may be considered for patients who cannot tolerate continuous positive airway pressure (CPAP) or oral appliances. However, ankyloglossia, a congenital condition characterized by restricted tongue movement, has been shown to limit the exercise regimen and compromise the effectiveness of myofunctional therapy. This study aims to explore the effectiveness of myofunctional therapy combined with frenectomy for adult OSA patients with ankyloglossia. …

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ความรู้และทัศนคติของทันตแพทย์ในประเทศไทย เกี่ยวกับภาวะหยุดหายใจขณะหลับจากการอุดกั้น, ทิพย์จุฑา บูรณกิจวิสูตร Jan 2022

ความรู้และทัศนคติของทันตแพทย์ในประเทศไทย เกี่ยวกับภาวะหยุดหายใจขณะหลับจากการอุดกั้น, ทิพย์จุฑา บูรณกิจวิสูตร

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษานี้จึงมีวัตถุประสงค์เพื่อศึกษาระดับความรู้และทัศนคติต่อภาวะหยุดหายใจขณะหลับจากการอุดกั้นของทันตแพทย์ในประเทศไทยจำนวน 494 คน ระหว่างเดือนกรกฎาคมถึงกันยายน พ.ศ.2565 โดยใช้แบบสอบถามออนไลน์ประกอบด้วย 3 ส่วนได้แก่ ข้อมูลทั่วไป ความรู้ และทัศนคติ ผลการศึกษาพบว่าทันตแพทย์มีระดับความรู้น้อย จำนวน 275 คน (ร้อยละ 56.9) เกี่ยวกับคำจำกัดความของโรค พยาธิสรีรวิทยา การวินิจฉัยและการรักษา และผลคะแนนความรู้มีความแตกต่างอย่างมีนัยสำคัญทางสถิติที่ระดับความเชื่อมั่นร้อยละ 95 ของคะแนนความรู้ระหว่างทันตแพทย์ที่เคยฝึกอบรมและไม่เคยฝึกอบรมเกี่ยวกับภาวะหยุดหายใจขณะหลับจากการอุดกั้น ทั้งในและนอกระบบมหาวิทยาลัยทันตแพทยศาสตร์บัณฑิต และระหว่างทันตแพทย์ที่เคยมีประสบการณ์และไม่เคยมีประสบการณ์ในการตรวจคัดกรองผู้ป่วยที่มีภาวะหยุดหายใจขณะหลับจากการอุดกั้น แต่พบว่าทันตแพทย์ผู้ร่วมวิจัยส่วนใหญ่มีทัศนคติเชิงบวกต่อความสำคัญว่าภาวะหยุดหายใจขณะหลับจากการอุดกั้นอาจคุกคามถึงชีวิต และมีความมั่นใจในการตรวจคัดกรองและให้การจัดการภาวะหยุดหายใจขณะหลับจากการอุดกั้น โดยจำนวนร้อยละ 76 เห็นด้วยอย่างยิ่งว่าภาวะหยุดหายใจขณะหลับจากการอุดกั้นเป็นโรคที่มีความสำคัญเพราะอาจคุกคามถึงชีวิตได้ สรุปว่าทันตแพทย์ไทยยังมีระดับความรู้น้อยแต่มีทัศนคติที่ดีต่อภาวะหยุดหายใจขณะหลับจากการอุดกั้น บ่งชี้ให้เห็นว่าทันตแพทย์เห็นคุณค่า รวมถึงให้ความสำคัญและเต็มใจที่จะเรียนรู้เกี่ยวกับภาวะหยุดหายใจขณะหลับจากการอุดกั้น

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Micro-Computed Tomography Analysis Of Bone Regeneration Using Mrna Encoding Bone Morphogenetic Protein-2 With Implant Placement In Rat Femur, Nopparada Lawtrakulngam Jan 2022

Micro-Computed Tomography Analysis Of Bone Regeneration Using Mrna Encoding Bone Morphogenetic Protein-2 With Implant Placement In Rat Femur, Nopparada Lawtrakulngam

Chulalongkorn University Theses and Dissertations (Chula ETD)

Bone morphogenetic protein-2 (BMP-2) has a potential for enhancing bone regeneration and osseointegration around implant materials. However, the drawback of rhBMP-2 protein delivery is instability. Therefore, high doses of rhBMP-2 need to be used clinically, which results in higher costs and more side effects. Although gene-based therapy, can overcome these limitations. Recent clinical studies on BMP-2 mRNA regarding bone regeneration around implant materials are lacking. This study aims to investigate the differences in bone regeneration after implant placement with or without mRNA encoding BMP-2 (m1ᴪ-BMP-2 mRNA) in micro-computed tomography analysis after implant placement in rat femur defects. Forty implant titanium …

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