cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2010.932
title: Effect of different core to fiber post length ratios and luting cement types on failure resistance of endodontically treated teeth

description: The objective of this study was to evaluate the effect of different core to fiber post length ratios on failure resistance of endodontically treated teeth. Forty-eight mandibular first premolar were randomly divided into six groups (n=8 for each group) which were restored with three different core length to fiber post length (2:3, 1:1 and 3:2) and two different post luting cement; Panavia F 2.0 (Kuraray) and RelyX Unicem (3M ESPE). All teeth were removed the crown and endodontically treated with step-back technique. The group 1, 2 and 3 were restored with different three core to fiber post length ratios; 2:3 (6mm:9mm), 1:1 (7.5mm:7.5mm) and 3:2 (9mm:6mm) respectively. The specimens were cemented fiber post (DT light post No.1, Bisco) with Panavia F 2.0. The cores were built up with resin composite (Tetric ceram, Ivoclar) and full metal crowns (Ni-Cr) were fabricated and cemented on all specimens with Panavia 2.0. For group 4, 5 and 6, specimens were prepared the same as the group 1, 2 and 3 respectively but using RelyX Unicem for luting fiber posts. All teeth were embedded in acrylic resin blocks with periodontal ligament simulation. Failure resistances were determined using universal testing machine at 45 degrees angle to tooth long axis with cross head speed 1.0 mm/min until failure occurred. The result found that the failure resistance of group 1, 2, 3, 4, 5 and 6 were 454.3 ±22.4 N, 423.1 ±27.9 N, 295.7 ±24.8 N, 556.2 ±16.9 N, 541.1 ±20.2 N and 413.0±13.4 N, respectively. The data were analyzed with one way ANOVA showed that in groups using Panavia F 2.0, group 1 and group 2 were significantly higher than group 3 (p&lt;0.05). In groups using RelyX Unicem, group 4 and group 5 were significantly higher than group 6 (p&lt;0.05). The t-test showed that the groups using RelyX Unicem were significantly higher failure resistance than the groups using Panavia F 2.0 in each ratio (p&lt;0.05). Within the limitations of this study, teeth restored with core:post ratio at 2:3 and 1:1 indicated significantly higher failure resistance than restored with ratio 3:2. RelyX Unicem used for luting fiber post exhibited significantly higher failure resistance than Panavia F 2.0 in each ratio.
DOI: 10.14457/cu.the.2010.934
title: Effects of cryotherapy and petrissage massage on functional signs of delayed onset of muscle soreness of knee extensors following stimulated plyometric exercise in Thai male

description: This study focused on effects of cryotherapy and petrissage massage on functional signs of delayed onset of muscle soreness of knee extensors following stimulated plyometric exercise in Thai male aged 17-25 years old. Forty-five participants were equally randomized into 3 groups; cold-water immersion at 15°C (CWI), petrissage massage (MAS), and control (CON). Participants performed 100 drop jump exercise. Treatments were given within 10-15 min after the exercise for 20 min. Serum creatine kinase, soreness sensation, thigh circumference (TC), range of motion (ROM), strength test and vertical jump performance were measured 7 times; immediately before exercise, after exercise, after treatment, 24, 48, 72 and 96 h after exercise. All markers of DOMS were significant change compared to baseline (p&lt;0.05) after the exercise indicating the presence of muscle damage, especially at 24-48 h. The results showed that there were significant different between groups on soreness sensation, greater on TC at mid-belly in CON compared with CWI group, greater on ROM in CWI and MAS compared with CON groups, greater on MVC (maximal voluntary contraction) in MAS compared with CWI and CON after the exercise (p&lt;0.05). A lower in CWI compared with MAS and CON groups on vertical jump after 20 min treatment (p&lt;0.05) were observed. These data reveal that petrissage massage could reduce soreness sensation and maintained ROM, and MVC following the exercise, compared to cryotherapy.
DOI: 10.14457/cu.the.2010.935
title: Efficiency in visual function and quality of life of pre and post of cataract surgery patients in Roi Et Hospital, Roi Et province, Thailand

description: This analytical study aimed to study about efficiency in visual function and quality of life of pre and post of cataract surgery patients at Roi Et hospital. Purposive sampling was used to recruit 48 samples during January to March 2010 through an applied interview questionnaire. Via Conbrach’s alpha Coefficient, the reliability of the interview questionnaire was 0.75. Data analysis was in frequency, percentage, mean, standard deviation (descriptive statistics) and paired t-test. The research result could be summarized as follows: 1. Personal data: there were male (54.17%) more than female (45.83%). Most of them were between 60-69 years-old (43.75%), agriculturalist (72.92%), lived outside municipal areas (93.75%), used Universal Coverage Scheme (85.42%), received the elderly life-sustaining fund (60.42%), average household monthly income was 36,000 baht per year while average personal income was 10,000 baht per year. Almost half of them had enough income vis-à-vis expenditure (48.94%). Almost all of the patients (95.83%) lived with their family and were taken care of by their children (60.42%). In the past one year before their cataract surgery, the patients used the services of Roi Et Hospital for 3.5 times on average, with average 500 baht travel expense per visit (together with their care-taker). Majority of them had no cataract surgery for the other eye (70.83%) and the timing from the latest cataract surgery was 33 months on average. 2. Results on visual acuity assessment found that before the surgery, the patient’s visual acuity (VA) was 81.25% considered as blindness cataract group. However, after the surgery, the patient’s VA was 45.84% considered as being improved close to normal level. The visual analog scale (VAS) before the surgery was 35.83 and after the surgery was 81.92 on average. 3. Mean (score) of the efficiency in visual function and quality of life (QoL) after the surgery (X-bar 48.13, SD 3.41) and (X-bar 68.50, SD 3.66), respectively which were higher than before the surgery (X-bar 27.42, SD 9.37) and (X-bar 47.10, SD 14.89) respectively, with statistically significant at the level of 0.05. Future research should involve other types of eye disease. Engagement from top executives in problem solving or policy making has to be initiated for the development of eye care services for cataract patients.
DOI: 10.14457/cu.the.2010.936
title: Estimation of bioavailable heavy metals in water environments in Bangkok neighborhood

description: The concentrations of dissolved metals in the Chao Phraya River in the stretch between 83 and 29 km away from the river mouth, and some water environment around an industrial estate situated in Bangkok suburb were measured and labile species, self-defined as unbalanced inorganic species were calculated using Visual MINTEQ Ver. 3. The Chao Phraya River sampling was carried out one time, and three time samplings were carried out for the industrial estate. The average inorganic species concentrations of Ni, Cu, Zn, Cd and Pb in 5 samples collected from the Chao Phraya River in the stretch between 83 and 29 km away from the river mouth were, 71.8±12.1μg/L, 3.38±7.02μg/L, 75.8±61.6μg/L, 7.18±1.86μg/L, 6.71±6.14μg/L, which constitutes 96±1.8%, 7.3±14% (when a value of a site was exclude, 1.3±0.87%), 99±0.64%,74 ± 9% and 3.8±2.5% of the dissolved metals, respectively, are found to be labile. The water environments around the industrial estate included raw water from the Chao Phraya River for uses in the estate, treated water for distribution in estate, groundwater in community outside the industrial estate, influent to WWTP (combined from industries and domestic sources within the estate), treated wastewater effluent from WWTP, polishing pond effluent of WWTP, effluent-receiving canal water at 3 points, and the lake water within the industrial estate zone. The dissolved concentrations of Ni, Cu, Cd, Zn and Pb varied from ND to a few hundreds ug/L. Remarkable findings in industrial estate samples are as follows: Treated water showed higher dissolved concentrations of some metals due to decrease in pH during treatment facilities, dissolved concentrations of metals in treated wastewater after activated sludge process and polishing pond treatment did not seem to differ much with those of influent stream which flowed into WWTP, which is in accordance with the previous studies, Groundwater near the estate normally showed low dissolved metals; high Zn and Cd were found in different sampling though,The canal water that received WWTP’s effluent showed some level of dissolved metals; the lake inside the estate compound showed a bit different metals levels, pH and % labilities in some cases, indicating that the source of metals might be different, Zinc showed highest labilities in all samples, which indicated that the environmental settings in all sites favored forming inorganic species. Lowest labilities were found in Cu and Pb, uniformed and moderately high labilities are found in Ni despite difference in sampling sites, and labilities of Cd varied to an extent. The estimated labile concentrations were compared with those measured using a speciation device called Emporeᵀᴹ. The results were found to be different for some reasons.
DOI: 10.14457/cu.the.2010.937
title: Factors affecting properties and stability of whey hydrolysates

description: The objectives of this study were to investigate the effect of the enzymatic hydrolysis conditions on the properties of whey hydrolysates as protein patterns, degree of hydrolysis (DH) and reactive oxygen species (ROS) scavenging activity and to investigate the stability of whey hydrolysates. Enzymatic hydrolysis conditions of whey were performed at various types of enzyme (trypsin, chymotrypsin and papain), enzyme to substrate ratio (E/S: 1/1000, 1/200 and 1/100) and hydrolysis time (1, 3 and 5 hr). From the protein patterns of whey hydrolysates, increased E/S and hydrolysis time improved the digestion of whey by trypsin and chymotrypsin. While the digestion of whey by papain was increased by the E/S. Increased E/S and hydrolysis time resulted in increasing the DH of whey hydrolysates. Papain had the greatest digestive ability to hydrolyze whey followed by trypsin and chymotrypsin. The ROS scavenging activity of whey hydrolysates was investigated in human keratinocyte cells (HaCaT cells). The types of enzyme had the greatest effect on the activity. Whey hydrolyzed with papain showed the highest activity followed by whey hydrolyzed with trypsin and chymotrypsin. Although whey hydrolysates were rich in cysteine, a glutathione precursor, our study showed that the ROS scavenging activity of whey hydrolysates was not mediated by the stimulation of glutathione synthesis. The stability of lyophilized whey hydrolysate powders was investigated under accelerated condition. After 3 month’s storage, the peptides in whey hydrolysate powders were unstable resulting in decreased ROS scavenging activity.
DOI: 10.14457/cu.the.2010.938
title: Features of the interorganizational system to support the initial trust of joining the transportation collaboration

description: Organizations' reluctance to join a transportation collaboration has been acknowledge to be a obstacle to solving the empty truck syndrome. Since the interorganizational system (IOS) is typically shown during the invitation session of collaboration, well equipped features to support initial trust should increase intention to join the transportation collaboration. The purpose of this study wsa to investigate the effects of features to support initial trust-trustworthness features and social embeddedness features- on intention to join the transportation collaboration. A laboratory experiment was conducted using a 2x2 factorial within-subjects experimental design with two settings. Four versions of the experimental IOS system with initial trus-embbed features were manipulated. Subjects were asked to play the role of businiess owners whose organizations owned some trucks and sho faced an empty truck problem. There are two experimental settings: (1) 58 logistics students participating in a WHands-on Workshop" experiment, and (2) 61 MBA Students participating in a "Waching a Demonstration via Video clips" experiment. After considering the effects of disposition to trust and transaction characteristics in the transportation collaboration, trustworthiness features did not affect the logistics students' intention to joint transportation callabboration but these features had led to the increase in MBA students' intention. Whilst, social embeddedmess features had some effect on the logistics students' intention but not the MBA students' intemtion.
DOI: 10.14457/cu.the.2010.939
title: Financial and efficiency analysis of the Islamic Bank of Thailand

description: The aim of this study is to give an in-depth analysis, using both financial ratios and Data Envelopment Analysis (DEA) of the first Islamic bank in Thailand, i.e. Islamic Bank of Thailand (Act, B.E.2545). The study evaluates performance of the Islamic bank in profitability, liquidity, risk and efficiency, corporate governance effects from the opening of the bank until 2009. The first question is arising from the fact that the bank started to earn positive profit after 5 years of existence. Was it because the time needed from the beginning or it has something to do with the changes in the management decision making? If yes, would it be beneficial for the bank to move in the same direction or there is any other more efficient way to move forward in the future. Also a question arise from the fact, Thailand has a Muslim population around 6-8 millions, which is a relatively big number. How the Islamic Bank of Thailand could possible increase her market share? The study include eighteen financial ratios such as Return on Asset (ROA), Return on Equity (ROE), Loan to Deposit ratio (LAR), Debt to Equity ratio (DER), Asset Utilization (AU), and Income Expense ratio (IER) are used to measure banking performances, both in Islamic and conventional banking sectors. Moreover, the use of the Data Envelopment Analysis is the frontier technique of efficiency analysis either in conventional or Islamic banks. Performance evaluation is a method of measuring a company’s achievement based on the targets set earlier. It is a part of control measures that can help a company to improve its future performance while identifying the deficiencies of its operation through the financial year. This study compares each ratio from the beginning of the existence of the bank on a yearly basis, compare the results, attempt to find the reasons if there is a change from year to year, and explain those reasons. Moreover, evidences found and presented that the early years of unprofitability was a result of the early development of the bank and not because of a bad management. Hence, the research provides further information and evidences about the relative effectiveness of the Islamic Bank of Thailand during the 2008 global financial crisis.
DOI: 10.14457/cu.the.2010.940
title: Gait assessments in patients with early Parkinson's disease

description: Introduction : Gait disturbances are affected in all stages of PD. At the early stages of the disease, gait disturbances can be present but in most patients, it does not cause significant functional disability and fall-related problems. A study of gait disturbances in early PD is limited. It still fails to identify the subclinical gait abnormalities in both normal walking and dual task performed during walking in early PD patients. Objective : To identify the early or subclinical gait abnormality in patient with early Parkinson’s disease who do not as yet complain of gait difficulty. Methods : The cross – sectional analytic study in early Parkinson’s disease patients who are asymptomatic gait abnormality comparing to age and sex matched controls in the ratio of 1:1 in order to identify the gait abnormality during January 2010 – January 2011. The patients and controls were assigned to walk in both normal and narrow passage with normal walking , walking with metronome and dual tasking. The quantitative data of gait parameters are collected and examined between PD patients versus age and sex matched controls by using paired t-test. The statistical significant is set at α 0.05. Results : The total patients that met the inclusion criteria were 21. There were 12 female (57.1%) and 9 male (42.9%) patients. All were in the early PD stage. The mean Hoehn and Yahr was 1.62. The mean duration of disease was 2.77 years. The gait parameters in the PD patients were not different from controls in normal walking and walking with metronome. When dual task was performed during walking, the gait parameters were significantly changed in cadence (p=0.04), cycle time (p=0.04), swing time (p=0.02), single support time (p=0.01) and stride width (p=0.04) comparing to controls. Walking in narrow passage did not disturb the gait of PD patients except walking in narrow passage with cognitive overload. There were no freezing of gait during the walking test. Conclusions : There was a subclinical gait abnormalities in the early PD patients with dual tasking. Narrow passage does not have much as affect on gait as cognitive overload. Cognitive training and rehabilitation should be done early in early PD patients to improve gait and balance stability and reduced risk of falling.
DOI: 10.14457/cu.the.2010.941
title: Holographic mesons in external electric fields

description: The AdS/CFT correspondence is a popular method which allows us to study non-perturbative systems. We use the AdS/CFT correspondence to study a system of neutral mesons at finite temperature with external electric field. We consider the system in non-perturbative situation that constituent quarks of mesons strongly couple to each other. In order to understand the AdS/CFT correspondence, we will first discuss some basic result of type IIB superstring theory. Then we discuss the AdS/CFT correspondence and D3/D7 model. Calculations of D7-branes action can be matched to physical observables. We explain how shapes of D7-branes can describe the property of phase transition from stable mesons to melting mesons. The phase transition is analogous to metal/insulator phase transition. As external electric field is applied, we can calculate the conductivity and drag force of the system.
DOI: 10.14457/cu.the.2010.942
title: Homomorphisms of some hyperrings

description: A homomorphism of a semihypergroup (H, )is a function ƒ : H → H such that ƒ(x ₀ y) ⊆ ƒ(x) ₀ ƒ( fy) for all x, y ϵ H . A homomorphism of a hyperring (A, ⊕, ₀) is a function ƒ : A → A such that ƒ is a homomorphism of both (A, ⊕) and (A, ₀) Denote by Hom (A, ⊕, ₀)the set of all homomorphisms of (A, ⊕, ₀) into itself. If (R, +, .)is a ring and I is an ideal of R, we write (R, +, ₀₁) for the multiplicative hyperring where x₀₁y = xy+I for all x, y ϵ R. The first purpose is to characterize when Hom(ℤ, +, ₀[subscript mℤ) = Hom(ℤ, +) and Hom(ℤ[subscript n], +, ₀[subscript mℤ[subscript n]]) = Hom(ℤ[subscript n], +) hold. We also show that Hom(ℤ, +, ₀[subscript mℤ) is infinite when m &gt; 0, om(ℤ[subscript n], +, ₀ [subscript mℤ[subscript n]])| ≥ 2n/(m,n) when (m, n) &gt; 1 and the equality holds if (m, n) is a prime power. We consider the two Krasner hyperrings (G⁰, ⊕₁, .) and (G⁰, ⊕₂, .) defined from a group (G, .) by G⁰ = G⊍{0}, 0⊕₁0 = {0}, x⊕₁0 = 0⊕₁x = {x}, x⊕₁x = G⁰\{x} for all x ϵ G, x⊕₁y = {x,y} for all distinct x,y ϵ G, 0⊕₂0 = {0}, x⊕₂0 = 0⊕₂x = {x}, x⊕₂x = {x, 0} สำหรับทุก x ϵ G, x⊕₂y = G\{x, y} for all distinct x, y ϵ G and 0.x = x.0 = 0 for all x ϵ G⁰. For the Krasner hyperring (G⁰, ⊕₂, .), the condition that | &gt; 3 must be assumed. The second purpose is to characterize the elements of Hom(G⁰, ⊕₁, .) and Hom (G⁰, ⊕₂, .). The Krasner hyperring (R/ρ, ⊕, *) is considered where (R, +, .) is a commutative ring, x ρ y ⇔ x = y or x = -y, xρ ⊕ yρ = {(x+y)ρ, (x-y)ρ} and xρ*yρ = (xy)ρ for all x,y ϵ R. We characterize the elements of Hom(ℤ/ρ, ⊕, *) and ƒ ϵ Hom (ℤ[subscript n]/ρ, ⊕, *) with ƒ(0ρ) = 0ρ and ƒ(1ρ) = 1ρ. Moreover, the elements of Hom([0,∞), ⊕, .) are characterized where x⊕x = [0,x] for all xϵ[0,∞) and x⊕y = {max{x, y}} for all distinct x,y ϵ [0,∞) Let (R, ⊕[subscript P₁], ๐[subscript P₂]) be the P-hyperring of a ring (R, +, .) induced by nonempty subsets P₁, P₂ of R. The third purpose is to find Hom(ℤ, +)∩Hom(ℤ, ⊕[subscript lℤ], ๐[subscript mℤ]) and determine when Hom(ℤ[subscript n], +) is contained in Hom(ℤ[subscript n], ⊕[subscript lℤ], ๐[subscript mℤn]). The sets Hom(ℤ, ⊕[subscript lℤ], ๐([subscript mℤ])\Hom(ℤ, +) and Hom(ℤ[subscript n], ⊕[subscript lℤ], ๐[subscript mℤn])\Hom(ℤ[subscript n], +) are also shown to be nonempty for certain l, m.
DOI: 10.3886/e110942v4-13283
title: Revealed preference analysis with normal goods: Application to cost of living indices

description: We present a revealed preference methodology for nonparametric demand analysis under the assumption of normal goods. Our methodology is flexible in that it allows for imposing normality on any subset of goods. We show the usefulness of our methodology for empirical welfare analysis through cost of living indices. An illustration to US consumption data drawn from the Panel Study of Income Dynamics (PSID) demonstrates that mild normality assumptions can substantially strengthen the empirical analysis. It obtains considerably tighter bounds on cost of living indices, and a significantly more informative classification of better-off and worse-off individuals after the 2008 financial crisis.<br>
DOI: 10.14457/cu.the.2010.943
title: Knowledge, attitudes and practices (KAP) on cigarette smoking among adult Myanmar migrant workers: a case study in Ratchaburi province, Thailand

description: A cross-sectional study was carried out in Bann Leuk and Nongree Sub-district, Ratchhaburi Province, Thailand in March, 2011. The main purposes of this study were to identify the prevalence of smoking and to identify the association between demographic characteristics, level of knowledge, level of attitudes and practices of smoking of adult Myanmar migrant workers aged between 18 to 59 years who lived in Ratchaburi province, Thailand. This study was conducted with 385 samples by using a structured interview questionnaire to gather the data with the ethical view protocol from Chulalongkorn University. For data analysis, Statistical Package of Social Science software SPSS version 16 (licensed for Chulalongkorn University) was used. Chi-square test was used to describe the relationship between independent variables and cigarette smoking behavior. The results showed that the overall prevalence of cigarette smoking was 40% with the prevalence of males was 55.3% and of females was 9.4%. Seventy two point seven percent of smokers started smoking under the age of 18 years. 68.2% of smokers smoked 3 to 5 cigarettes per day and 44.8% of smokers smoked according to being loneliness when 40.3% smoked because of stress. Among respondents, 39.7% had high level of knowledge while 30.4% had moderate level of knowledge. For attitude toward smoking, 59% of respondents had high level of attitude and 37.4% had moderate level of attitude. Smoking behavior was high significant difference with age (&lt;0.001), gender (&lt;0.001) and duration of staying in Thailand (&lt;0.001). There was an association between knowledge of smoking and cigarette smoking behavior (&lt;0.001) while there was also statistical different between attitude towards smoking and cigarette smoking behavior (&lt;0.001).This study was done with the expectation that the information obtained from this study can be used as a baseline data for further studies. Interventions are needed to be considered for behavioral change and to conduct prevention and control measures of smoking among adult Myanmar migrant workers in Thailand.
DOI: 10.5519/qd.48c70lg4
title: Query on the Natural History Museum Data Portal (data.nhm.ac.uk) (344 records)