cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2012.806
title: Sexual perception and attitude of young urbanized Myanmar people consuming internet pornography and social networking channels

description: To examine the association between consuming internet pornography and sexual attitude and perception of young urbanized Myanmar people from MMTCP facebook group. The cross sectional study was conducted from 23 February to 15 March, 2013. The systematic sampling method was applied in 312 respondents for quantitative research. The data was collected through online structured survey system by using SurveyMonkey. The data were clarified by applying descriptive statistics for interpretation of data and inferential statistic to exmine the association between independent variables and sexual attitude and perception scale by using Chi-square, T- test and ANOVA test. The result showed that the prevalence of sex related chat on social network was 27.2% among 283 respondents. There were 69 male and 8 female in this 27.2%. The prevalence of pornographic related pages on social networking channels was 87.3% .97.6% of male respondents and 58.7% of female respondents being exposed to these pages. The current prevalence of internet pornography among respondents was 83.7%. 97.6% of male respondents and 72% of female respondents being exposed to internet pornography. There were significant associations between sex related chat on social network, consuming pornographic pages on social network and consuming internet pornography with level of sexual attitude and perception at the p-value less than 0.05. The result showed that there was significant difference of sexual attitude and perception of respondents by gender by mean of independent samples test. Practice level toward internet pornography was significantly associated with gender (p=0.00), marital status (p=0.39) and monthly average income (p=0.003) at p-values less than 0.05. But practice level toward internet pornography was not associated with education level, type of job and living place of respondents. Findings from this study pointed out that sex related online chat, consuming pornographic pages on social networks and consuming internet pornography had significantly associated with sexual attitude and perception of respondents and these associations should be considered as one of the factors that lead young people toward risky sexual behavior and practice. So comprehensive sex education program should be implemented among young people to overcome negative impact of internet pornography on young people. Updated health information in local languages should be available and accessible on the internet by young people.
DOI: 10.14457/cu.the.2012.807
title: Modification of cellulose-supported zirconocene catalyst with boron and gallium for ethylene copolymerization

description: At present, polyethylene has been widely used in the industry of manufacturing plastic bags. In the production of polyethylene, Ziegler-Natta catalysts and metallocene catalysts are able to producing polyethylene. Metallocene used in associate with methylaluminoxane shows very high activity in polyethylene polymerization. For metallocene catalysts used in the industry, it has developed and improved supported metallocene because it enables their use in gas- and slurry-phase processes and prevent reactor-fouling problems. Unfortunately, owing to the supporting effect, it is found that the catalytic activity of catalysts in the heterogeneous system is usually lower than the homogeneous one. In the past, it has been studied to modification on support. The results showed that the modification on support exhibited a promising enhancement for activity in metallocene catalyst systems. The study was divided into two parts. In the first part, study on synthesis of polyethylene using coir dust and cellulose as support was investigated. Two variables in this part are types of support and filler loading in polyethylene composites (10, 20, 30, and 40 %wt). It was found that the catalytic activity of coir dust was lower than the cellulose system. Catalytic activities can be decreased with increasing amount of coir dust while the activities increase with increasing cellulose loading. The addition of 30 % of cellulose shows that the maximal activity. In the second part, cellulose supports modified with B and Ga were employed in ethylene/1-hexene. It was found that the Ga-modified cellulose gave the higher activity than that of the non-modified one. The polymerization activities obtained from cellulose-Ga-2% exhibited the highest activity among the cellulose having Ga modification. Conversely, the B-modified cellulose gave lower activity than that of the non-modified one. All the obtained polymers and copolymers were characterized by SEM and DSC to determine the polymer properties.
DOI: 10.14457/cu.the.2012.808
title: The effects of number of natural teeth and number of posterior occluding pairs on the oral health-related quality of life in Thai elderly patients at Faculty of Dentistry, Chulalongkorn University

description: The objectives of this study were 1) to compare the oral health-related quality of life (OHRQoL) of Thai elderly dental patients at Faculty of Dentistry, Chulalongkorn University who had at least 20 natural teeth (NT) with those who had less than 20 NT, 2) to compare the OHRQoL of these patients who had at least 4 posterior occluding pairs (POP) with those who had less than 4 POP. 240 Thai elderly patients of Graduate Prosthodontic Clinic at Faculty of Dentistry, Chulalongkorn University were interviewed about general information, medical history and dental history, and evaluated OHRQoL by using OIDP. We counted number of functional NT and number of POP by using shimstock film. The results showed that the subjects with at least 20 NT had more OHRQoL than those with less than 20 NT significantly, and the subjects with at least 4 POP had more OHRQoL than those with less than 4 POP significantly. Furthermore, the subjects with at least 20 NT and at least 4 POP and those with less than 20 NT and at least 4 POP had better OHRQoL than those with less than 20 NT and less than 4 POP. These results indicated that we should consider the effect of the number of NT plus the number of POP on the OHRQoL, not only the number of NT or only the number of POP, because both number of NT and number of POP affect the OHRQoL
DOI: 10.14457/cu.the.2012.809
title: Comparison between the subjective and objective assessments of chewing ability in mandibular implant-retained overdenture patients

description: This study aimed to investigate the relationship between the subjective and objective assessments of chewing ability in mandibular implant-retained overdenture patients. Thirty-eight participants (mean ages: 69.2±8.3 years) were evaluated their chewing function 3 times: 1 month after implant placement, 1 month after the insertion of a mandibular implant-retained overdenture and 3 months after the insertion of a mandibular implant-retained overdenture. Subjective chewing ability was evaluated using a developed questionnaire consisting of 14 common food types. Objective chewing ability was assessed by a wax cube analysis method. The results showed that, at 3 months after the insertion of mandibular implant-retained overdenture, the outcome of the subjective assessment of chewing ability positively relate to the outcome of the objective assessment of chewing ability.
DOI: 10.14457/cu.the.2012.810
title: Effects of English reading instruction using 'active' framework on reading abilities reading strategies of tenth grade students

description: The purposes of this study were 1) to investigate the effects of English Reading Instruction using ACTIVE Framework on reading abilities of tenth grade students and 2) to explore reading strategies used by tenth grade students after participating in the English Reading Instruction using ACTIVE Framework. Participants included 70 tenth grade students, who were studying in English Reading Course. The experiment lasted for 13 weeks. The Paired sample t-test was used to investigate the differences between students’ mean scores between Pre and Post English Reading Ability Test scores. Descriptive statistics was also used to explore reading strategies used by tenth grade students after participating in the English Reading Instruction using ACTIVE Framework. The results revealed that (1) students gained higher scores on the English Reading Ability Posttest at the 0.05 significant level. (2) Among three reading strategies, they used the most Problem Solving Strategies after participating in English Reading Instruction using ACTIVE Framework to better comprehend the text.
DOI: 10.5281/zenodo.3407388
title: Dataset related to article "Hypofractionated radiation therapy (HFRT) versus conventional fractionated radiation therapy (CRT) for newly diagnosed glioblastoma patients. A propensity score matched analysis"

description: This record contains raw data related to article "Hypofractionated radiation therapy (HFRT) versus conventional fractionated radiation therapy (CRT) for newly diagnosed glioblastoma patients. A propensity score matched analysis" The current treatment for newly diagnosed glioblastoma consists of surgery followed by conventional radiotherapy (CRT) with concomitant and adjuvant chemotherapy. Hypofractionated radiation therapy (HFRT) has been investigated and it resulted feasible and safe. The aim of this study was to evaluate whether HFRT can be comparable to CRT. MATERIALS AND METHODS: The analysis included newly diagnosed glioblastoma patients treated with CRT 60 Gy/30 fractions or HFRT 60 Gy/15 fractions. A propensity score matching analysis (PSM) was performed using a logistic regression that considered age, KPS, extent of surgery, MGMT and IDH status. RESULTS: A total of 267 patients were included; before PSM 169 were in CRT-group and 98 in HRFT-group. After 1:1 matching, 82 patients resulted in each group. The median OS time was 17.9 months for the CRT-group and 16.7 months for the HFRT-group; the 1, 2, 3-year OS rates were 75.6%, 32.7%, and 15.5% for the CRT-group, and 75.6%, 33.3%, and 18.9% for the HFRT-group (p value = 0.8). No statistically significant differences were recorded between the two radiation therapy treatments performed. CONCLUSIONS: A short course of radiation therapy would seem comparable to CRT in terms of outcome and less burdensome for these poor prognosis patients.
DOI: 10.5281/zenodo.3407389
title: Dataset related to article "Hypofractionated radiation therapy (HFRT) versus conventional fractionated radiation therapy (CRT) for newly diagnosed glioblastoma patients. A propensity score matched analysis"

description: This record contains raw data related to article "Hypofractionated radiation therapy (HFRT) versus conventional fractionated radiation therapy (CRT) for newly diagnosed glioblastoma patients. A propensity score matched analysis" The current treatment for newly diagnosed glioblastoma consists of surgery followed by conventional radiotherapy (CRT) with concomitant and adjuvant chemotherapy. Hypofractionated radiation therapy (HFRT) has been investigated and it resulted feasible and safe. The aim of this study was to evaluate whether HFRT can be comparable to CRT. MATERIALS AND METHODS: The analysis included newly diagnosed glioblastoma patients treated with CRT 60 Gy/30 fractions or HFRT 60 Gy/15 fractions. A propensity score matching analysis (PSM) was performed using a logistic regression that considered age, KPS, extent of surgery, MGMT and IDH status. RESULTS: A total of 267 patients were included; before PSM 169 were in CRT-group and 98 in HRFT-group. After 1:1 matching, 82 patients resulted in each group. The median OS time was 17.9 months for the CRT-group and 16.7 months for the HFRT-group; the 1, 2, 3-year OS rates were 75.6%, 32.7%, and 15.5% for the CRT-group, and 75.6%, 33.3%, and 18.9% for the HFRT-group (p value = 0.8). No statistically significant differences were recorded between the two radiation therapy treatments performed. CONCLUSIONS: A short course of radiation therapy would seem comparable to CRT in terms of outcome and less burdensome for these poor prognosis patients.
DOI: 10.14457/cu.the.2012.811
title: Bioactive compounds from fruits and roots of Harrisonia perforata (Blanco) Merr.

description: This research focused on the isolation and identification of anti-inflammatory compounds from Harrisonia perforata. Chromatographic fractionation of the EtOAc crude extracts of H. perforata fruits and roots led to the isolation of two new rearranged limonoids, harperfolide (2) and harperforatin (4), and a new chromone, harperamone (8), together with six known compounds including harrisonin (1), obacunone (3), (+)-vouacapenic acid (5), harrisonol A (6), peucenin-7-methyl ether (7) and braylin I (9). Among known compounds, a coumarin braylin I (9) and a cassane diterpene (+)-vouacapenic acid (5) were first isolated from the genus Harrisonia. The structures of new compounds were elucidated on the basis of spectroscopic data and single-crystal X-ray diffraction analysis, whereas those of the known ones were identified by comparison of their spectroscopic data with those in the literature. Isolated compounds were assessed for their anti-inflammatory activity by monitoring the inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-induced macrophage J774.A1 cell lines. Harperfolide (2), a new rearranged limonoid, displayed the most potent anti-inflammatory activity by suppressing nitric oxide production from activated macrophages with IC50 value of 6.51 M. Furthermore, the inhibitory effect of harperfolide (2) on NO production via the inhibition of the corresponding iNOS protein expression, was further investigated by Western blot analysis. Pretreatment of the cells with various concentrations of 2 attenuated LPS-induced iNOS protein expression in a concentration-dependent manners. These data suggested harperfolide (2) can down regulate LPS-induced iNOS expression at the transcriptional level.
DOI: 10.14457/cu.the.2012.812
title: Effect of imperatorin on anoikis in H23 lung cancer cells

description: Anoikis-sensitization activity of imperatorin, an active furanocoumarin component of Angelica dahurica root, is reported herein for the first time in human lung cancer H23 cell. The present study demonstrated that the imperatorin treatment at sub-toxic concentrations enhanced human lung cancer H23 cell apoptosis after detachment. A western blot analysis of a major protein involved anoikis showed that imperatorin significantly increased p53 protein level which subsequently down-regulated Mcl-1 protein and up-regulated Bax while it had a minimal effect on Bcl-2 expression. In addition, imperatorin exhibited a strong inhibitory effect on the anchorage-independent growth of the cells supporting the anti-metastasis potential of imperatorin. Further, this study demonstrated that imperatorin sensitizes anoikis in another lung cancer cells, namely H292 and A549. Because anoikis was shown to be a critical hindrance preventing cancer cell metastasis, the knowledge regarding such an activity and an underlying mechanism may lead to the development of this compound for a cancer therapy.
DOI: 10.14457/cu.the.2012.813
title: Effects of broken rice noodle flour and heat-moisture treated tapioca starch on quality of dried noodle

description: Broken rice noodles from noodle factory were milled into flour (BRNF) and combined with rice flour (RF), tapioca starch (TS) and its derivatives (heat-moisture treated tapioca starch, HMT-TS, and cross-linked tapioca starch, CTS) to make composite rice noodles. Heat-moisture treatment (HMT) was applied to TS having various moisture contents (17, 20 and 23%, wb) at different temperature levels (95, 110 and 125 °C) for 16 h. HMT displayed influence on the apparent amylose contents, resistant starch levels, X-ray diffraction characteristics, thermal behaviors, swelling power and solubility, pasting characteristics and gel textures of TS. BRNF displayed some distinct physicochemical properties from RF such as higher resistant starch level, unique X-ray diffraction characteristics, retrogradation behavior, suppressed swelling and pasting, and weaker gel texture. Although the partial substitution of BRNF for RF did not change the composition-property relationships of RF-starch blends, decrease in swelling, pasting and gelling of RF combinations were observed. Among RF combinations, those that contained HMT-TS (20-125) failed to be used for noodle making, which was due to the inferior pasting properties of HMT-TS (20-125) to those of TS and CTS. Composite rice noodles prepared from flour combinations containing BRNF showed cooking and textual qualities close to those of commercial one. And flour blend of RF/BRNF/TS was considered preferable to reusing broken rice noodles.
DOI: 10.14457/cu.the.2012.814
title: A comparative double-blinded randomized study : the efficacy of prasaplai extract versus mefenamic acid on relieving pain among primary dysmenorrhea patients

description: ต้นฉบับไม่มีบทคัดย่อ
DOI: 10.14457/cu.the.2012.815
title: Design and analysis of fluid catalytic cracking unit for gasoline production

description: This study concentrated on the design and analysis of a fluid catalytic cracking process consisting of a reactor and a regenerator and can be divided into three main parts. Firstly, the performance improvement of a catalytic regenerator in the fluid catalytic cracking (FCC) process for gasoline production to achieve a higher burning efficiency was focused. This study performed a systematic model-based analysis of a downer-type regenerator to recover the activity of FCC catalyst by using a one-dimensional model of the regenerator coupled with its hydrodynamic characteristics and the kinetics of catalyst regeneration. The results of a sensitivity analysis showed that higher carbon content on spent catalyst causes a higher regeneration temperature. Ratio of the recycled-to-spent catalyst flow rate in range of 1.0-3.5 and temperatures of the spent catalyst in range of 703.15-803.15 K have insignificant effects on the overall performance of the regenerator. The suitable superficial gas velocity and the spent catalyst flow rate are in range of 4-7 m s⁻¹ and 20-40 kg m⁻²s⁻¹, respectively. Next, the performance of the regeneration of the FCC catalyst by considering the steam gasification reaction with burning reaction was studied. The simulation results show that the steam gasification reaction which is an endothermic reaction can help reduce the regeneration temperature and gives hydrogen as a valuable byproduct. Finally, an integrated downer reactor and riser regenerator system was studied based on the one-dimensional model of the downer reactor and riser regenerator. The simulation results on the effect of the catalyst-to-oil (CTO) ratio which is the key parameter in designing the FCC reactor reveal that at the CTO ratio of 20, the integrated system can operate efficiently with the conversion of gasoil of 0.85 and the yield of gasoline of 0.55. Moreover, the heat balance of the system can be maintained under this operating condition.
DOI: 10.14457/cu.the.2012.816
title: Quality assessment of ardisia elliptica fruit and analysis of embelin content by thin layer chromatographic techniques

description: Ardisia elliptica Thunb. dried fruits has been traditionally used as crude drug in Thai remedies such as Apaisali, Plookfietad and Prabchomphuthaveeb. This study aimed to report the current information on the pharmacognostic specification of A. elliptica dried fruits and analysed the chemical constituent, embelin by thin layer chromatography-densitometry and thin layer chromatography image analysis. The fruits were collected from 15 habitats located at various regions throughout Thailand. The whole plant of A. elliptica was illustrated in detail. The crude drug was prepared by cleaning, and drying in a hot air oven. The macroscopic characters were dried fruits with calyx, variable in sizes, dark brown and brown seeds. The anatomical and histological characteristics were sclereids or stone cell, recticulated vessels, endosperm, epidermis of seed. The total ash, acid insoluble ash, loss on drying, ethanol–soluble extractive, water–soluble extractive and water content of 5.57 ± 0.15, 0.34 ± 0.06, 10.54 ± 0.08, 4.92 ± 0.45, 9.42 ± 0.91 and 10.61 ± 0.69 % dry weight respectively. Thin-layer chromatographic fingerprints of ethanolic extracts of A. elliptica dried fruits were studied using chloroform, ethyl acetate and formic acid (5:4:1) as mobile phase. Detection under ultraviolet light (254 nm and 365 nm) as well as spraying with phosphomolypdic acid reagent showed the dominant band at Rf = 0.35. Thin layer chromatography for quantitative analysis was studied using n-butabol, n-propanol, 4N ammonia (1:7:2) as mobile phase. Linearity range of embelin by TLC-densitometry was 0.60 - 3.00 µg with correlation coefficient (r2) of 0.992, LOD and LOQ were 21.04 and 63.76 ng respectively. The precision was evaluated by the % RSD of repeatability and intermediate precision, was between 8.83 – 12.45 % RSD and 8.55 – 18.74 %RSD respectively. The average recoveries were 82.88 – 103.00 % recoveries. Linearity range of embelin by TLC-image analysis was 0.60 - 3.00 µg with correlation coefficient (r2) of 0.994, LOD and LOQ were 8.05 and 24.40 ng respectively. The precision was evaluated by the % RSD of repeatability and intermediate precision, was between 5.27 – 8.12 % RSD and 1.92 – 9.29 %RSD respectively. The average recoveries were between 103.83 – 123.50 % recoveries. The quantitative results showed that embelin content in A. elliptica fruits by TLC-densitometry were between 0.20 – 4.53 g/100 g of dried fruit whereas by TLC image analysis was found at 0.23 – 4.43 g/100 g of dried fruit. The comparison of embelin content between TLC densitometry and TLC image analysis were statistically tested using Wilcoxon Signed Ranks Test. It was found that the embelin contents by two methods were not significantly different (Z = -1.761, P = 0.078). This study provides scientific information for the quality control of A. elliptica dried fruits including embelin content in Thailand that leads to safe use of this crude drug.
DOI: 10.14457/cu.the.2012.817
title: Effective electromagnetic properties of linear and nonlinear composites

description: A composite structure consisting of randomly distributed two groups of non-magnetic spheres is investigated. The electric and magnetic polarizabilities of these spheres are determined using Mie scattering theory and then used to calculate the eﬀective permittivity and the eﬀective permeability of the composite. Based on these eﬀective properties, the design procedures to obtain a negative refractive index at infrared frequencies are reported. Furthermore, the characteristics of the plane wave propagations in biaxial anisotropic lossy media are investigated. The general condition on the negative phase velocity for homogeneous plane waves is provided in terms of material parameters and the propagation direction. The nu¬merical calculations for the angles between the average Poynting vector and the phase velocity are performed in order to justify the theoretical analysis. In ad¬dition, the refraction between free space and the biaxial anisotropic lossy media are also considered and the general condition on the negative angle of refraction is derived. Finally the higher-order dielectric responses of composites composed of weakly nonlinear elliptic cylindrical inclusions randomly embedded in linear media are investigated. The general formulae for eﬀective DC coeﬃcients are derived by the average ﬁeld method up to the ninth order and then applied to analyze the eﬀects of inclusion shapes on the eﬀective response. The quasi-static AC response of the composites under sinusoidal electric ﬁelds are also investigated. The general relationships between the eﬀective DC and AC coeﬃcients are established, which are applicable to all weakly nonlinear isotropic composites.