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Articles 12271 - 12300 of 15281
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Volume Components And Return Predictability In Abnormal Trading Events, Jetarin Charoenpornpoj
Volume Components And Return Predictability In Abnormal Trading Events, Jetarin Charoenpornpoj
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper examines return predictability of three types of trading volumes include total volumes, buy volumes and sell volumes in Thailand's stock market between 2012 to 2018. To measure predictability ability, we sort securities into group base on the level of trading volumes and type of volumes. We test and confirm that buy volumes and sell volumes can predict return one day after the abnormal trading event. Abnormal high buy volumes can predict positive next day return of that security while abnormal high sell volumes can predict negative next day return. In addition, we test and found that positive return …
Why Stock Distribution Announcement Causes Abnormal Return, Napas Chailapakul
Why Stock Distribution Announcement Causes Abnormal Return, Napas Chailapakul
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research investigated empirically why stock distribution announcement causes abnormal return. For stock split companies, the evidences support that liquidity improvement could be the first possible reason of occurrence of abnormal return during announcement date. The main groups of investors who increase their trading activity are retail and foreign investors. This study also presents another reason that is the occurrence of abnormal return during effective date. It is possible that this abnormal return comes from the increasing of buying demand flow during effective date. However, this study does not discover the evidence which support those two reasons in stock dividend …
Essay On The Stickiness Of Selling, General, And Administrative Cost, Phattraphol Anekpong
Essay On The Stickiness Of Selling, General, And Administrative Cost, Phattraphol Anekpong
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper provided evidences that costs management is affected by many factors and investors can use this knowledge to analyze the firm's cost management practices. Selling, General, and Administrative Costs (SG&A) appears to be sticky and showed that costs management is asymmetric. The cost stickiness occurs when the SG&A costs decrease by smaller percentage with revenue decrease compare to SG&A costs increase with revenue increase. This paper explored various factors that might have influence on the stickiness of SG&A costs using linear regression. Factors such as managerial ownership and ownership concentration are found to decrease cost stickiness in different periods. …
The Effects Of Increased Transparency On Market Liquidity : Empirical Evidence From Thai Bond Market, Tanamard Patana-Anek
The Effects Of Increased Transparency On Market Liquidity : Empirical Evidence From Thai Bond Market, Tanamard Patana-Anek
Chulalongkorn University Theses and Dissertations (Chula ETD)
To increase transparency, Thai Bond Market Association (ThaiBMA) issues the notification of disclosure of transaction information and control for post-trade deferred publication. Dealers are required to report all required trading information to ThaiBMA within 30 minutes after execution for public dissemination. The rules are issued for improved the market efficiency and increased customer activity. Moreover, ThaiBMA issues the penalty for Late Transaction to punish dealer. However, increasing transparency leads to an improvement on market liquidity. This paper examines the effect of post-trade transparency on market liquidity in the Thai bond market, measured by bid-offer quoted in terms of their yield …
Mergers And Acquistion : The Effect Of Announcement Date On Abmormal Return In Asia, Theedanai Snguanwongchai
Mergers And Acquistion : The Effect Of Announcement Date On Abmormal Return In Asia, Theedanai Snguanwongchai
Chulalongkorn University Theses and Dissertations (Chula ETD)
Merger and acquisition (M&A) is an ideal option to reduce business's risk of investment, gain stronger market penetration and wealth maximization. In this study, event study was performed to see the effect of abnormal return from M&A on Asian countries, including Indonesia, Thailand, Malaysia, Hong Kong and Singapore with sampling period between 2010 to 2017. From the result of the test, it was found that M&A creates positive value for acquirer firms in Asia. The semi strong form of Efficient Market Hypothesis (EMH) was examined by looking at the leakage of information prior to the announcement and market's reaction after …
Doctoral In Creative Music Research : The Musical Dialect In Modern Conventional Idiom Of The Piano Concertos, Paulo Ricardo Soares Zereu
Doctoral In Creative Music Research : The Musical Dialect In Modern Conventional Idiom Of The Piano Concertos, Paulo Ricardo Soares Zereu
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research aims to explore the musical dialect within the conventional idiom as well as the interpretational approach and analytical overview of the selected Piano Concertos. The three prominent and significant Piano Concertos were chosen as followed: 1) Concerto in E-flat major for Two Pianos and Orchestra, KV. 365 by Wolfgang Amadeus Mozart (1756-1791), 2) Concerto in C major for Piano, Violin, Cello, and Orchestra, Op.56 by Ludwig van Beethoven (1770-1827), and 3) Concerto for Two Pianos and Orchestra in D minor by Francis Poulenc (1899-1963). The research also presented the innovative revolutionary of the pianistic and interpretational challenges of …
Development Of Value Added Unripe Papaya Flour From Waste Product Of Fruit Industry, Waralee Joymak
Development Of Value Added Unripe Papaya Flour From Waste Product Of Fruit Industry, Waralee Joymak
Chulalongkorn University Theses and Dissertations (Chula ETD)
Papaya fruit (Carica papaya L.) belonging to Caricaceae family is recognized as a good source of dietary fiber and antioxidants. The objective of this study was to develop the unripe papaya flour (UPF) from waste fruit product. The study was also investigated physicochemical, functional properties of UPF and its addition of pancake. First, the small pieces of unripe papaya were heated by hot air oven, then ground by using a high-speed universal grinder and sieved through a 100-mesh sieve. The particle size of UPF was 140.8±2.1 µm with randomly irregular shape. The hydration properties of UPF was higher than wheat …
Effect Of Bitter Gourd Extracts On The Mutagenicity Of 1-Aminopyrene Reacted With Nitrite Using Ames Test, Korkiat Panpasuk
Effect Of Bitter Gourd Extracts On The Mutagenicity Of 1-Aminopyrene Reacted With Nitrite Using Ames Test, Korkiat Panpasuk
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study was conducted to investigate the mutagenic activity of raw and cooked bitter gourd (Momordica charantia) including raw fruit extract (RW), blanching water (BW), hot water extract from blanched fruit (HB), stir-fried fruit extract (SF), and stir-fried fruit (pre-squeezed with salt) extract (SS). In addition, the effects of extracts in modifying the mutagenic activity of mutagen freshly prepared by the reaction between 1-aminopyrene and sodium nitrite and the effects when adding each extract at the beginning of the same reaction using Ames test on Salmonella typhimurium strains TA98 and TA100 without enzymatic activation were also determined. The data for …
Antioxidant And Antimutagenic Activity Of Extracts From Pericarp And Seed Of Zanthoxylum Limonella Alston, Patamawan Wipoosanapan
Antioxidant And Antimutagenic Activity Of Extracts From Pericarp And Seed Of Zanthoxylum Limonella Alston, Patamawan Wipoosanapan
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study was conducted to investigate the antioxidant and antimutagenic activity of Zanthoxylum limonella seed extract and that of Z. limonella pericarp extract. The total phenolic contents and antioxidant activity assay including DPPH assay and FRAP assay were performed. The results showed that the antioxidant activity of pericarp extract was higher than that of the seed extract. The direct mutagenicity assay was determined, with and without nitrite treatment using the Ames test towards Salmonella typhimurium strains TA98 and TA100. The mutagenic modification assay was performed by measuring the interfering effect of the pericarp extract and the seed extract on the …
Preparation And Antimicrobial Activity Of Caprylic Acid Emulsion For Food Coating, Raweewan Bunyovimonnat
Preparation And Antimicrobial Activity Of Caprylic Acid Emulsion For Food Coating, Raweewan Bunyovimonnat
Chulalongkorn University Theses and Dissertations (Chula ETD)
Antimicrobial food coating is the interesting method for food preservation, especially in fruits and vegetables. Previous studies have been reported that the caprylic acid had the antimicrobial activity against a variety of microorganisms. However, little research has been conducted on the use of caprylic acid in the form of food coatings. Therefore, this study aims to determine the optimum conditions for the caprylic acid emulsion preparation and to evaluate the antimicrobial activity of the emulsion, including the effect of food coatings with caprylic acid emulsion on physical properties and microbial growth inhibition. Emulsions containing 4% w/v caprylic acid (oil) and …
Carbohydrate Content Of The Medications For Epileptic Children Treated With Ketogenic Diet At King Chulalongkorn Memorial Hospital, Thanarat Sawangrit
Carbohydrate Content Of The Medications For Epileptic Children Treated With Ketogenic Diet At King Chulalongkorn Memorial Hospital, Thanarat Sawangrit
Chulalongkorn University Theses and Dissertations (Chula ETD)
The purposes of this study were to establish a database of the carbohydrate content of medications and investigate carbohydrate content of medications in epileptic children treated with ketogenic diet (KD) at King Chulalongkorn Memorial Hospital. One hundred sixty-nine KD order forms in 3 events (KD initiation, follow-up visit, and hospital re-admission) for epileptic children whose aged younger than 18 years old during 2009-2017 were selected. Clinical and nutritional data were obtained from medical records and KD order forms from the pediatric nutrition unit. The study showed that oral liquid dosage forms had the highest carbohydrate content in the formulations as …
Application Of Konjac Glucomannan To Encapsulate And Stabilize The Curcumin In Milk System, Afwa Hayuningtyas
Application Of Konjac Glucomannan To Encapsulate And Stabilize The Curcumin In Milk System, Afwa Hayuningtyas
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study investigated the influence of different concentration of konjac glucomannan (KGM) (0, 0.1, 0.2, 0.3 % (w/v)) on the stability of curcumin emulsion in milk system containing 10%, 20%, and 30% (v/v) oil volume fraction. The data of creaming index, curcumin concentration, apparent viscosity, and color were obtained to investigate the stability of the system. Emulsions that reached the physical stability until 14 days of storage at 4ᵒC were subjected to further analysis including antioxidant, particle size, zeta potential, and bioaccessibility by the simulated gastrointestinal tract (GIT). The result suggested that increasing KGM concentration significantly increased the viscosity of …
Étude De L'Espace Dans Les Contes De Fées De Madame D'Aulnoy : De L'Enfermement À L'Émancipation, Vanichcha Kanchanobhas
Étude De L'Espace Dans Les Contes De Fées De Madame D'Aulnoy : De L'Enfermement À L'Émancipation, Vanichcha Kanchanobhas
Chulalongkorn University Theses and Dissertations (Chula ETD)
Dans les contes de fées de Mme d'Aulnoy, l'espace est étroitement lié à la sexualité. L'Éros constitue un mobile capital qui pousse un personnage à en enfermer un autre. La prison affecte la sexualité du prisonnier. L'évasion de la prison relève de la question de la vie et de la mort. Une tentative ratée est punie : le châtiment va de la déshumanisation au trépas. Le Thanatos constitue le seul moyen qui permet l'émancipation. S'évader du clos et se retrouver dans l'ouvert permettent une libération sexuelle, et aussi une maturité pleinement développée. Néanmoins, certains désirs sexuels tendent plutôt à s'épanouir …
Seismic Characteristics Of Paleo-Pockmarks At Great South Basin, New Zealand, Arunee Karaket
Seismic Characteristics Of Paleo-Pockmarks At Great South Basin, New Zealand, Arunee Karaket
Chulalongkorn University Theses and Dissertations (Chula ETD)
Paleo-pockmarks and present-day pockmarks are founded in several varieties both onshore and offshore worldwide. These features can be used as an indicator of fluid flow process which expulses through an unconsolidated sediment within the basin. The Great South Basin, New Zealand is one of the basins that paleo-pockmarks are observed covering the southeast offshore of South Island at around 1.5 s (TWT) depth beneath the surface. This study aims to identify seismic characteristics of paleo-pockmarks in the Great South Basin and predict the possible fluid origins and their mechanism. The numerous paleo-pockmarks are identified and imaged by using 3D seismic …
The Influence Of Geological Structure On Stratigraphic Development During Multiphase Rifting In The Songkhla Basin, Gulf Of Thailand, Jidapa Phoosongsee
The Influence Of Geological Structure On Stratigraphic Development During Multiphase Rifting In The Songkhla Basin, Gulf Of Thailand, Jidapa Phoosongsee
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Cenozoic N-S trending Songkhla rift basin, located in the southwest Gulf of Thailand, was developed as a predominantly orthogonal extended half graben structure. The half graben is controlled by a boundary fault zone on the western side of the basin, which forms a series of N-S to NNE-SSW, east-dipping normal faults. The rift spans two phases of rifting; the Eocene-Oligocene and the Oligocene-Miocene phases, the late syn-rift to post-rift transition occurred from the late Early Miocene to Middle Miocene. The main clastic hydrocarbon reservoirs in the basin are located in the Early Miocene to Middle Miocene section. These reservoirs …
Influences Of Geologic Conditions And Anthropogenic Activities On Changes Of Geomorphology And Sediment Load Characteristics Of The Ping And Chao Phraya Rivers, Nikhom Chaiwongsaen
Influences Of Geologic Conditions And Anthropogenic Activities On Changes Of Geomorphology And Sediment Load Characteristics Of The Ping And Chao Phraya Rivers, Nikhom Chaiwongsaen
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Chao Phraya River flows into the largest river basin of Thailand. The Ping River is one of its the major upstream branches flowing down slope southwardly, joining the Chao Phraya River in the central plain and ends at the Gulf of Thailand. The sand-choked is extensively observed and the flood overflow occurs frequently and rapidly at the Lower Ping River. In contrary, the Chao Phraya River, the erosion of river bank and shoreline around the river mouth has been spatially increasing in place. The Landsat imageries taken in 1987, 1997, 2007 and 2017 were used to analyze geomorphological changes …
Aftershock Analysis In The Mainland Southeast Asia, Premwadee Traitangwong
Aftershock Analysis In The Mainland Southeast Asia, Premwadee Traitangwong
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study, the characteristics of the aftershock in the mainland Southeast Asia (MSEA) were investigated using the several seismological techniques, i.e., i) the Gutenberg-Richter relationship (G-R relationship) ii) the modified Omori's law iii) the Bath's law and iv) the fractal dimension. After declustering, 1,697 clusters during 1985-2017, which represent the aftershocks occurring after mainshock were investigated in 13 seismic source zones recognized in the MSEA. According to the Bath's law, the maximum magnitude of the aftershock depends on the magnitude of the mainshock, with the difference value between 0.4-2.5. In the intraplate zone, it is less than in the …
Effects Of Monovalent Ions On Low Salinity Waterflooding In Shaly-Sandstone Reservoir, Ativish Yomchan
Effects Of Monovalent Ions On Low Salinity Waterflooding In Shaly-Sandstone Reservoir, Ativish Yomchan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Multi-component Ion Exchange (MIE) was proved to be a major mechanism occurred during Low Salinity Waterflooding (LSWF). Reduction of both total salinity and concentration of divalent ions of injected water together with a presence of monovalent ion results in dissolution of divalent ions linking between rock surface and oil. As a consequence, oil is liberated from rock surface. This study aims to study effects of monovalent ions in MIE mechanism. Stirring test is performed and results show that ion with less hydration radius tends to be more active in MIE; hence, potassium ion and cesium ion illustrate potential in oil …
Evaluation Of Wax Deposition Prevention For Crude Oil Production From Mae Soon Oil Field, Htet Myat Min
Evaluation Of Wax Deposition Prevention For Crude Oil Production From Mae Soon Oil Field, Htet Myat Min
Chulalongkorn University Theses and Dissertations (Chula ETD)
Waxy crude oils are normally found in petroleum reservoirs. Crude oil with the wax formation is one of the crucial problems for flow assurance of pipeline transportation in oil and gas production. This issue can commonly cause wax deposition problem and it has made a huge amount of economic losses such as production, time and maintenance cost. Therefore, it is a critical aspect to deal with wax deposition for crude oil flow assurance, especially at the surface region in cold climate. In this study, n-heptane and poly (maleic anhydride-alt-1-octadecane) or MA as the inhibitors with different concentrations will be measured …
Mineral Inclusions In Ruby And Sapphire From Bo Welu And Bo Rai Deposits, Eastern Thailand, Supparat Promwongnan
Mineral Inclusions In Ruby And Sapphire From Bo Welu And Bo Rai Deposits, Eastern Thailand, Supparat Promwongnan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Corundum deposits located in several places around the world which appear to have different genesis models. The origins of corundum can be distinguished by mineral inclusions. In this study, most of the rough gem corundum from Bo Rai deposit, Trat Province, and Bo Welu deposit, Chanthaburi Province, in Eastern Thailand show etched or dissolved surfaces that were resulted from dissolution by hot basaltic magma during transportation to the surface. Moreover, these gem corundums also show absorption spectral characteristics related to trace elements which typical for corundum from this area. Corundums from Bo Rai deposit in Trat Province, and from Bo …
Pre-Feasibility Study Of Silica Sand Processing Plant In Sihanoukville Province, Cambodia, Sochea Ros
Pre-Feasibility Study Of Silica Sand Processing Plant In Sihanoukville Province, Cambodia, Sochea Ros
Chulalongkorn University Theses and Dissertations (Chula ETD)
Nowadays, bottom ash and flue gas desulfurization (FGD) gypsum are by-products of the coal combustion process from coal-fired power plant. Bottom ash has been applied in many applications such as landfill, cement industry etc., and FGD gypsum is applied in cement and wallboard industry. Also, they can be used in agricultural activities for soil amendment but the amount of bottom ash and FGD used in this function is still low. Furthermore, biochar has long been used to improve soil fertility. The positive impacts of biochar amendment on soils are that it can increase soil capacity to adsorb plant nutrients, decrease …
Utilization Of Biochar Coupled With Coal Combustion Products For Degraded Soil Amendment, Thidphavanh Sengsingkham
Utilization Of Biochar Coupled With Coal Combustion Products For Degraded Soil Amendment, Thidphavanh Sengsingkham
Chulalongkorn University Theses and Dissertations (Chula ETD)
Low Salinity Waterflooding (LSWF) has been intensively studied worldwide as it is a low-cost technique. By injecting water with very low salinity compared to formation water in the reservoir, the method changes equilibrium between rock surface, oil and surrounding water, causing wettability alteration through Multi-component Ion Exchange (MIE) mechanism. In this study, ammonium ion is added into low salinity water to facilitate the MIE mechanism in shaly-sandstones reservoir. Experiments are performed with shaly-sandstone rock as it contains both calcium and magnesium ions as part of clays and ammonium ion can express its potential by triggering MIE mechanism. Stirring test, spontaneous …
The Design Of Thailand International Public Sector Standard Management System And Outcomes In Service For The Private Sector And People System (P.S.O. 1107): Case Study Of Siriraj Piyamaharajkarun Hospital, Pimadej Siwapornpitak
The Design Of Thailand International Public Sector Standard Management System And Outcomes In Service For The Private Sector And People System (P.S.O. 1107): Case Study Of Siriraj Piyamaharajkarun Hospital, Pimadej Siwapornpitak
Chulalongkorn University Theses and Dissertations (Chula ETD)
The application of privatization in public sector is a one of strategic transformations that significantly helps promoting the organizational development in terms of efficiency and quality which subsequently resulted to the continuous financial development which refers to as revenue and profitability. Such development usually will be corresponded to the competitive market which indicates the organizational achievement. However, privatization can possibly create direct impacts on public sector and stakeholders as well if it was conducted in the public sector that emphasized on public health services such as public hospital where the core product is health care or medical treatment. The objectives …
Politics Of Changes In Thailand's University Admission Policy (1999-2017), Nitchapat Kitcharern
Politics Of Changes In Thailand's University Admission Policy (1999-2017), Nitchapat Kitcharern
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research aims to study a significant phenomenon, the changes in Thailand's University Admission system between 1999 and 2017. During this period, the admission system was changed six times. This research focuses on the political factors that led to the changes in admission policy, particularly the relationships among politicians, bureaucracy, schools, civil society and students. The purpose of this research is threefold: (1) to understand the causes and procedures of changes in Thailand's university admission policy, (2) to study and understand the correlation between politics and changes in university admission system, and (3) to understand the impact these changes had …
Crude Oil Removal By Sphingobium Sp. Mo2-4 And Bacillus Megaterium Tl01-2 Immobilized On Aquaporous Gel, Adisan Rungsihiranrut
Crude Oil Removal By Sphingobium Sp. Mo2-4 And Bacillus Megaterium Tl01-2 Immobilized On Aquaporous Gel, Adisan Rungsihiranrut
Chulalongkorn University Theses and Dissertations (Chula ETD)
Petroleum products are the major energy sources that drive global economy. The exploration and exploitation of crude petroleum oil increase the potential risk for oil spills in marine ecosystem. In this work, two non-pathogenic sponge-associated bacteria were developed as immobilized bacterial co-culture for crude oil removal from seawater. Two bacteria were Spingobium sp. MO2-4 that could degrade crude oil, diesel oil, and fuel oil, and Bacillus megaterium TL01-2 that could degrade crude oil, possessed high cell surface hydrophobicity, could tolerate heavy metal, and was able to form biofilm.. The modified polyurethane foam, aquaporous gel (AQ), was used as carrier for …
Diesel Removal Efficiency In Soil Washing Process By Mixed Solution Of Nonionic Surfactant And Biosurfactant, Pajaree Boonyathai
Diesel Removal Efficiency In Soil Washing Process By Mixed Solution Of Nonionic Surfactant And Biosurfactant, Pajaree Boonyathai
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study, Tween 80 and three biosurfactant (Rhamnolipid, Saponin and Lipopeptide) were mixed to formulate the appropriate surfactant solution for diesel removal from contaminated soil by washing process. The mixed surfactant system was fixed at 5% w/v of active surfactants concentration in total with different mass ratio of Tween 80 to biosurfactant at 9:1, 8:2 and 7:3 of total concentration. The critical micelle concentration (CMC) of various ratio surfactant mixtures and their interfacial tension (IFT) with diesel were determined and compared with their individual surfactant. The results illustrate that mixed Tween and Lipopeptide at 9:1 mass ratio had the …
Formulation Of Oil Dispersants By Mixing Lipopeptide Biosurfactant And Non-Ionic Surfactants, Parisarin Nawavimarn
Formulation Of Oil Dispersants By Mixing Lipopeptide Biosurfactant And Non-Ionic Surfactants, Parisarin Nawavimarn
Chulalongkorn University Theses and Dissertations (Chula ETD)
Marine oil spill can cause various harmful impacts to the environment. To solve this problem, dispersant is usually applied to enhance petroleum remediation in seawater. The commercial dispersants mostly contain surfactant and solvent that can be toxic to marine lives. This study aimed to formulate solvent-free biosurfactant-based dispersants by mixing lipopeptides from Bacillus subtilis GY19 with fatty alcohol ethoxylate (Dehydol LS7TH), a low toxicity nonionic surfactant. Hydrophilic-lipophilic deviation (HLD) concept was applied. The fractions of lipopeptide and dehydol LS7TH were determined based on the equivalent alkane carbon number (EACN) of hydrocarbons under seawater salinity (34ppt). The molar fractions of lipoppeptide …
Pm10 And Pm2.5 Concentrations In Bangkok Over 10 Years And Implications For Air Quality, Tin Thongthammachart
Pm10 And Pm2.5 Concentrations In Bangkok Over 10 Years And Implications For Air Quality, Tin Thongthammachart
Chulalongkorn University Theses and Dissertations (Chula ETD)
Atmospheric particulate matter particles with a diameter less than 10 micron (PM10) and less than 2.5 micron (PM2.5) have been adverse human health effect. Ambient air pollution data in Central Business District (CBD) of Bangkok monitored by Pollution Control Department and Bangkok Metropolitan Administration were collected over ten years in Bangkok from 2008 to 2017. Trend of the particulate matter concentrations data were investigated over ten year for implications of activities related to air pollution. Daily average air pollution data between year 2015 and year 2017 were used as the dependent variables to develop mathematic models with multiple linear regression …
Validity And Reliability Of Automatic Range Of Motion Measurement Using The Elbow Joint Photograph, Chris Charoenlap
Validity And Reliability Of Automatic Range Of Motion Measurement Using The Elbow Joint Photograph, Chris Charoenlap
Chulalongkorn University Theses and Dissertations (Chula ETD)
Background: Photographic-based arc of motion measurement methods required human assessors and its accuracy is depend on observer experience. Objectives: Current research proposed method of using digital image processing technique (DIPT) for measuring elbow range of motion. Methods: Participants were enrolled from students and staffs in the university. Fluoroscopic images of both elbows were taken in flexion and extension positions. Two physiotherapists performed goniometer, inclinometer and smartphone gyroscope range of motion (ROM) measurement on bilateral elbows. Photographer took elbow images in fully extension and fully flexion three times for each position with 8-megapixel smartphone camera. The extension and flexion angles were …
Prescription Of Anti-Osteoporosis Medication Among Orthopedic Surgeon (Pam-Os Study) In Osteoporotic Hip Fracture, Piyabuth Kittithamvongs
Prescription Of Anti-Osteoporosis Medication Among Orthopedic Surgeon (Pam-Os Study) In Osteoporotic Hip Fracture, Piyabuth Kittithamvongs
Chulalongkorn University Theses and Dissertations (Chula ETD)
Summary: As a medication for preventing osteoporotic fracture is recommended but scarcely prescribed, this study surveyed Thai orthopedic surgeons to explore key determinants of their prescription practices. In addition to a set of well-known determinants, the patient's health insurance status could also influence the prescription practice.Purpose: Although many guidelines suggest using anti-osteoporosis medications in patients who suffered from fragility hip fractures, low rate of prescription was encountered all over the world. In this study, we aimed to explore potential determinants affecting the prescription of anti-osteoporosis medications by orthopedic surgeons.Materials and methods:Online questionnaire survey was conducted among randomly selected orthopedic surgeons …