cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2011.43
title: The effects of web-based speaking test in English for tourism (WBST-EFT) task types and English proficiency levels on students’ speaking performance and an investigation of their attitudes and test taking strategies

description: The objectives of this study were: (1) to examine the effects of the task types of the WBST-EFT and English proficiency levels on English for Tourism speaking performances in terms of language and content knowledge, and fluency; (2) to study the students’ attitudes towards the WBST-EFT; and (3) to investigate and compare the types and frequency of strategies used by high and low proficiency students in doing the WBST-EFT. A total of 120 third year students who took English for Tourism II course at Nakhon Ratchasima Rajabhat University participated in this study. Stratified sampling was employed to classify the subjects into high and low proficiency groups. The research instruments were a needs analysis questionnaire, a web-based speaking test in English for Tourism (WBST-EFT), the attitudes towards the WBST-EFT online questionnaire, and a speaking test taking strategies coding scheme. Two-way ANOVA was conducted to investigate both the main and interaction effects between the proficiency levels and the task types on the test performances. Additionally, independent samples t-test was employed to compare the attitudes towards the WBST-EFT between the two proficiency groups. Descriptive statistics, frequency and percentage were employed to describe and compare the language for specific purposes (LSP) speaking components, students’ views and their test taking strategies. Content analyses on speech performances and test taking strategies’ verbal reports were carried out to obtain the in-depth information. The findings were as follows. First, proficiency levels had a significant main effect on the LSP speaking performances. Additionally, there was a significant task types effect on vocabulary, language functions and content knowledge. More specifically, task types had greater impact on the low proficiency group than on the high proficiency group, particularly in the content knowledge component. Content analysis revealed prominent features of some speaking components associated with the task types. Second, the two proficiency groups’ views towards the WBST-EFT were positive and not significantly different. Finally, the high proficiency students reported higher frequency and more types of strategies used than the low proficiency group across the three different task types in the online LSP test. However, the difference in types of strategies was not obvious. The results of the current study can be applied to other LSP technology-integrated tests.
DOI: 10.14457/cu.the.2011.44
title: Bioactive constituents of Miliusa Mollis and Miliusa CF.Fusca

description: Chemical investigations of the twigs and leaves of Miliusa mollis, and from the leaves and the stems of Miliusa cf. fusca led to the isolation of fifteen new neolignans, namely, (2S,3S)-2,3-dihydro-2-(4-methoxyphenyl)-3-methyl-5-(E)-propenylbenzofuran, (7S,8S)-threo-Δ8'-4-methoxy-8.O.4'-neolignan, (2S,3S)-5-allyl-2-(4-methoxyphenyl)-3-methyl-2,3-dihydrobenzofuran, (7S,8S)-threo-Δ8'-7-acethoxy-4-methoxy-8.O.4'-neolignan, (2R,3R)-5-allyl-2-(4-hydroxy-3-methoxyphenyl)-3-methyl-2,3-dihydrobenzofuran, (2R,3R)-5-allyl-2-(4-hydroxyphenyl)-3-methyl-2,3-dihydrobenzo furan, (2R,3R)-5-allyl-2-(4-hydroxyphenyl)-7-methoxy-3-methyl-2,3-dihydrobenzofuran, (2R,3R)-2-(4-hydroxyphenyl)-3-methyl-5-(2-oxopropyl)-2,3-dihydrobenzofuran, (7S,8R)-Δ8'-5-hydroxy-3,4,5'-trimethoxy-7.O.3',8.O.4'-neolignan, (7S,8R)-Δ8'-4-hydroxy-3,5,5'-trimethoxy-7.O.3',8.O.4'-neolignan, (7R,8R)-Δ8'-4-hydroxy-3,5'-dimethoxy-7.O.3',8.O.4'-neolignan, (7R,8R)-Δ8'-3,4,5'-trimethoxy-7.O.3',8.O.4'-neolignan, 3,4,5,4',5'-pentamethoxy-3',b-epoxy-g,2'-neolign-8'-ene, (7R,8R)- Δ8'-3,4,5,5'-tetramethoxy-7.O.3',8.O.4'-neolignan, ∆7'-9'-hydroxy-4,5,3',5'-tetramethoxy-8.O.4'-neolignan, a new phenolic glycosides, namely, tyrosol-1-O-β-xylopyranosyl-(1→6)-O-β-glucopyranoside, and a new lignan, namely, rel-(7S,8S,7'R,8'S)-5-hydroxy-3,4,3',4'-tetramethoxy-7,7'-epoxylignan. In addition, seventeen known compounds were identified including (2R,3R)-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-3-methyl-5-(E)-propenylbenzofuran, conocarpan, ()-epicatechin, liriodenine, asimilobine, (–)-norushinsunine, icariside D2, decurrenal, 2-methoxy-4-[2-[2-methoxy-4-(2-propen-1-yl)phenoxy]propyl]phenol, licarin A, eusiderin D, (7S,8R)-erythro-7-hydroxy-3,4,3O-trimethoxy-∆1,3,5,1',3',5',8'-8.O.4'-neolignan, 2-(4-allyl-2,6-dimethoxyphenoxy)-1-(3,4-dimethoxyphenyl)propane, virolongin B, eusiderin C, (+)-veraguensin and (7S,8S,7'R,8'S)-3,4,5,3',4'-pentamethoxy-7,7'-epoxylignan. The structures of these compounds were determined by means of spectroscopic analysis, as well as comparison of their UV, IR, MS and NMR properties with previously reported data. These isolated compounds were evaluated for free radical scavenging, cytotoxic and anti-herpes simplex virus activities. Three compounds including (2R,3R)-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-3-methyl-5-(E)-propenylbenzofuran, (--)-epicatechin and asimilobine showed weak free radical scavenging activity. Some compounds from the leaves of M. mollis and M. cf. fusca showed moderate to weak cytotoxicity. Interestingly, (7S,8R)-erythro-7-hydroxy-3,4,3'-trimethoxy-∆1,3,5,1',3',5',8'-8.O.4'-neolignan showed potent cytotoxicity against KB, MCF7 and NCI-H187 cell lines without toxicity against ATCC CCL-81 (Vero cells). In addition, (2R,3R)-2-(4-hydroxyphenyl)-3-methyl-5-(2-oxopropyl)-2,3-dihydrobenzofuran, (7S,8R)-D8¢-4-hydroxy-3,5,5¢-trimethoxy-7.O.3¢,8.O.4¢-neolignan and licarin A showed weak activity against herpes simplex type 1 and type 2.
DOI: 10.14457/cu.the.2011.45
title: Effects of Coscinium Fenestratum stem extract on function and expression of P-Glycoprotein

description: This study aimed to investigate the effects of Coscinium fenestratum stem extract on P-glycoprotein (Pgp) function and MDR1 expression in porcine renal epithelial (LLC-PK1) and its MDR1 transfected (LLC-MDR1) and its vinblastine (VBL)-induced MDR1 transfected (LLC-VBL) cell lines. C. fenestratum stems were extracted by maceration with 80% ethanol. The result showed that the non-toxic concentration of C. fenestratum extract (100 µg/ml) potentiated the effect of VBL (Pgp-substrate)-induced cytotoxicity in LLC-VBL and LLC-MDR1 cells. This effect was stronger in LLC-VBL cells than in LLC-MDR1 cells which it was well correlated with significantly increase accumulation of intracellular fluorescent rhodamine 123, a Pgp-substrate. Interestingly, the C. fenestratum extract decreased Pgp-ATPase activity in both Pgp-overexpressed cells. The major compound in C. fenestratum extract, berberine, at the non-toxic concentration of 1 µg/ml significantly potentiated the effect of VBL-induced cytotoxicity in LLC-VBL cells, but it did not affect LLC-MDR1 cells. It had no effect on rhodamine 123 accumulation and Pgp-ATPase activity in both Pgp-overexpression cells. However, both C. fenestratum extract and berberine had no effect on Pgp expression determined by Western blot analysis. Taken together, our findings indicated that C. fenestratum ethanolic stem extract is a P-glycoprotein inhibitor by inhibiting ATPase activity without affecting Pgp-expression. Therefore, co-administration of Pgp-substrate medicines with C. fenestratum extract may lead to undesirable drug-herb interaction.
DOI: 10.14457/cu.the.2011.46
title: Kinetics and correlation of caveolin-1 and MCL-1 proteins with lung cancer cell anoikis

description: Both Caveolin-1 (Cav-1) and Mcl-1 have been implicated in the regulation of cancer cell anoikis but their relationship and underlying mechanisms of regulation are not known. By using the kinetics, the present study demonstrated that Cav-1 and Mcl-1 both regulate anoikis in non small cell lung cancer cells (NSCLCs). Modulation of Cav-1 and Mcl-1 levels by overexpressing or short hairpin containing plasmids was shown to influence the cell viability and apoptosis after detachment in H460 cells which indicates the pivotal role of Cav-1 and Mcl-1 in regulating anoikis in this cancer cell model. The western blot results have been shown that the levels of Cav-1 and Mcl-1 were gradually reduced over time of detachment. Correlation analysis shows that the reduction of these two proteins has closely correlated with Pearson correlation (r) = 0.986 (p-value&lt; 0.0001) leading to the hypothesis of the interaction between Cav-1 and Mcl-1 proteins. Immunoprecipitation and immunofluorescence studies suggested that Cav-1 interacted with Mcl-1 and prevented it from degradation via the ubiquitin-proteasome pathway during cell anoikis. Mcl-1 and Mcl-1-Cav-1 complex were highly elevated in Cav-1 overexpressing cells, but were greatly reduced in Cav-1 knockdown cells. Consistent with this finding, it was found that Mcl-1 ubiquitination was significantly attenuated by Cav-1 overexpression but increased by Cav-1 knockdown. Together, our results indicate a novel role of Cav-1 in anoikis regulation through Mcl-1 interaction and stabilization, which provides a new insight to the pathogenesis of metastatic lung cancer and its potential treatment.
DOI: 10.14457/cu.the.2011.47
title: Relationships between breakfast consumption and metabolic syndrome in working age population in Kanchanaburi province

description: This cross-sectional descriptive study aimed to examine the prevalence of metabolic syndrome and the relationship between breakfast consumption and metabolic syndrome in working age population in Kanchanaburi Province. There were 373 participants (163 males and 210 females). The diagnosis of metabolic syndrome was defined by the National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III) and International Diabetes Federation (IDF). The data were collected from blood biochemical test, blood pressure measurement, waist circumference measurement, and questionnaires for evaluating the relationship between breakfast consumption and metabolic syndrome by multiple logistic regression. The results showed that the prevalence of metabolic syndrome defined by the NCEP ATP III and IDF were 28.4 and 22.5% respectively. The analysis of the relationship between risk factors and metabolic syndrome showed that the factors which were significantly associated with increased risk of developing metabolic syndrome included female (OR = 3.36, p = 0.036), age of 50-59 years (OR = 5.69, p = 0.027), physical inactivity (OR = 2.98, p = 0.024), obesity (OR = 12.89, p &lt; 0.001 ), consumption of sugar-sweetened beverage more than three days per week (OR = 1.92, p = 0.039), intake of low-fat milk three days or less per week (OR = 2.35, p = 0.009), and skipping breakfast (OR = 7.82, p &lt; 0.001). In addition, the study found that the individuals who did not eat breakfast had more risks of large waist circumference (OR = 2.58, p &lt; 0.05), high blood triglyceride level (OR = 3.43, p &lt; 0.001), and high blood glucose level (OR = 2.66, p &lt; 0.05) but low blood HDL-cholesterol level (OR = 4.24, p &lt; 0.001) than those who ate breakfast daily. This study illustrated that the dietary pattern, especially breakfast consumption, was an important factor that influenced the development of metabolic syndrome in working age population. Therefore, some dietary patterns should be modified, including an increase in frequency of consumption of breakfast and low-fat milk and a decrease in consumption of sugar-sweetened beverage to reduce the risk of metabolic syndrome.
DOI: 10.14457/cu.the.2011.48
title: The relationship between postmortem methamphetamine concentrations in urine, blood and vitreous humor

description: Methamphetamine (MA) is the most widespread narcotic in Thailand. Urine samples are used as evidences of MA abuse under the Narcotics Law of Thailand, whereas blood samples are specimens for investigation of MA poisoning. However, both specimens are occasionally not available or contaminated. Vitreous humor is a specimen which is less contaminated and easy to work with analytically. The aim of this study is to examine the relationships between MA concentrations in urine, blood and vitreous humor. Those three specimens were collected from 40 Thai deceased and their MA concentrations were quantitatively analyzed by headspace-solid phase microextraction/gas chromatography-mass spectrometry technique. The results showed that the relationships between MA concentrations in urine vs blood, urine vs vitreous humor, and vitreous humor vs blood were linearly correlated with a correlation coefficient (r) of 0.89, 0.99, and 0.88, respectively. Linear regression equations of those relationships between urine vs blood, urine vs vitreous humor, and vitreous humor vs blood were y = 0.001x + 8.08, y = 0.056x - 262.86, and y = 0.027x + 16.20, respectively. This study suggests vitreous humor as an alternative specimen for MA investigation.
DOI: 10.14457/cu.the.2011.49
title: The treatment of the Chins in India

description: The ongoing human rights abuses and widespread famine are the primary root causes that trigger Chin people to scatter throughout different places such as India, Malaysia and Thailand at the present time. Among these countries, India hosts the largest Chin population since the 1988 student uprising in Burma. Currently, an estimated number of 130,000, which is almost 20 percent of the total population in Chin State, Burma, are stranded in the most parts of Mizoram State and New Delhi, India. Unfortunately, the Chins fleeing from a military regime to the world’s most populous democratic country still face several human rights violations, sometimes even more than they did in Burma. Besides absenting to ratify the UN 1951 Refugee Convention or its 1967 Protocols, India has twisted its treatment of the Chin refugees to the worse with no provision of legal protection by condemning several human rights treaties such as ICCPR (International Convention for Civil and Political Rights), CAT (Convention against Torture and other Cruel, Inhuman or Degrading Treatment or Punishment and Social and Cultural Rights (SCR) that the country has acceded. Additionally, Chin people are no longer considered as either refugees or asylum-seekers by the Indian government onwards 1995 and their rights are subsequently violated. Consequently, the influx of Chin especially to Mizoram State, the 23rd state of India, is astoundingly regarded as a scapegoat for creating domestic instability. Therefore, this research basically unveils how the implementation of Look East Policy (LEP) and domestic socio-economic problems in India profoundly impact on India’s treatment of the Chins within its territory and related consequences on three realms such as livelihood, physical security and education.
DOI: 10.14457/cu.the.2011.50
title: The roles of the community, private sector, and local authority in recycling in Bangkok's gated communities

description: Recycling, as proposed by the UN to be one of the means to achieve sustainable development, has not been practiced sufficiently at the household level in Bangkok where waste problem is endemic. This research focuses on recycling in Bangkok’s gated communities of which their prevalence and consuming-class residents render them an ideal target group for a source separation program. The roles of three major stakeholders were examined -- the gated community itself, the private recycling agent, and the local authority in charge of waste management. The goal is to understand the interrelated roles of these three stakeholders, and how they affect recycling efforts in gated communities. The research was conducted on 23 gated communities, out of which 4 were chosen for case studies. Interviews were conducted with community members, private recyclers, and officers at the Bangkok Metropolitan Administration (BMA) and the municipalities. Findings indicates that the first two stakeholders were found to play an active role in the community recycling program as community residents sort waste to be collected for sale later to private recycling agents (who then sell it to bigger buyers), in the absence of a formal recycling system. In terms of the gated community, findings show that social capital – in the aspects of the community’s committee, its supporting staff, its pro-recycling leader, volunteers, and networks -- as well as convenience especially of having a central storage area for recyclables play a crucial role in the success of a recycling program, while economic status may potentially play a role although further research is needed to confirm this. In terms of the private recycling agent, its availability and reliability play an important role. In terms of the local authority such as the BMA, it plays no role in the gated communities’ recycling program. However, the research points out that the role of the local authority is, in fact, needed to improve the current situation. Findings reveal three potential factors that have been preventing the BMA from contributing more to recycling. The first is the lack of commitment from policymakers on recycling, which is caused by the constant change of leadership, the lack of staff in the field, and the lack of public awareness. The second is the potential conflict of interest on the part of different participants in the informal recycling system. The third is the impracticality of the BMA in issuing regulations to support source separation due to the lack of real mandate, and the absence of supportive system and the right policy mix.
DOI: 10.18716/nmrshiftdb2/2306
title: NMR data for 4aH-3,5,8a-Trimethyl-4,4a,8a,9-tetrahydro-naphtho[2,3-b]-furan-8-one
DOI: 10.5066/p918df1e
title: Distribution of Phosphorus in Soils and Aggregated within Geologic Mapping Units, Conterminous United States

description: This data release comprises four datasets that represent Phosphorus concentration in the A and C horizon of soils within the conterminous United States. The source dataset is a slight modification of the data published in the report "Geochemical and mineralogical data for soils of the conterminous United States", http://pubs.usgs.gov/ds/801/. Data were interpolated for use in models associated with the National Water Quality Assessment program of the USGS. Two datasets are of Phosphorus in soil A horizon and C horizon, interpolated using Inverse Distance Weight (IDW) algorithm. Two datasets are of Phosphorus in soil A horizon and C horizon, interpolated using IDW, and then aggregated to Geologic Mapping Units (GMUs).
DOI: 10.14457/cu.the.2011.51
title: Chemical composition and biological activities of selected exudate gums

description: The selected exudate gums from medicinal plants, Kondagogu (Cochlospermum gossypium Dc.), Karaya (Sterculia urens Roxb.) and Acacia (Acacia senegal (Linn.) Willd.) were recognized in the term of polysaccharide dietary soluble fibers. The in vitro biological activities were performed namely glucose entrapment ability against dialysis; α- glucosidase, pancreatic lipase and tyrosinase inhibition effects using 1-Deoxynorjirimysin, Oristat and Ascorbic acid as positive control; disturbance on lipid’s solubility in synthetic bile salt and pig bile micelles; and DPPH scavenging effect compared to Butylated hydroxytoluene. The physical properties for viscosity and average molecular weight were investigated. The monosaccharide composition was analyzed qualitatively and quantitatively using gas chromatographic technique. Total protein contents were quantities by Lowry method. Only Kondagogu gum showed 39 % of glucose entrapment property against dialysis tubing. The exudate gums had no effect on α-glucosidase inhibition. The effect on cholesterol solubility in bile salt micelles showed that Kondagogu and Acacia gums had slightly inhibitory effects (16 and 23%). Kondagogu and Acacia gums inhibited 16 and 20 % of lipase activity. The lipase inhibitory effect was reciprocal relationship to the concentration of gum gels. Tyrosinase enhancing activity was shown among these gums. Kondagogu and Karaya gums expressed 10% and 20% DPPH scavenging effect respectively, while Acacia gum had no effect. The viscosity determined by falling ball viscometer was 574.1, 25.2 and 1.0 cP for Kondagogu, Karaya and Acacia gums respectively. The determination of average molecular weight performed by size exclusive chromatography using SEC-HPLC with refractive index detector revealed the average molecular weight more than 2,350 kDa for Acacia, Kondagogu and Karaya gums, indicating their large structures. Kondagogu gum was composed of galactose, rhamnose and galacturonic acid (14.6, 17.1 and 17.2 % by weight respectively). Karaya gum was composed of galactose, rhamnose, galacturonic acid and glucuronic acid (14.7, 8.9, 9.1 and 36.0 % by weight respectively). Acacia gum contained arabinose, galactose, rhamnose and glucuronic acid (21.4, 42.6, 10. 6 and 22.5 % by weight respectively). Total protein contents among these gums were 2.4, 9.5 and 4.7 % by weight respectively.
DOI: 10.14457/cu.the.2011.52
title: Size-controlled synthesis of silver particles VIA green chemistry

description: Silver nanoparticles (AgNPs) were successfully synthesized using “green chemistry”. Tapioca has been used both as reducing agent and stabilizer. Tapioca after treated with an acidic and alkaline solution generated reducing species which is used to completely reduce silver ions and sufficiently stabilize the obtained silver nanoparticles. The average size, size distribution, morphology, and structure of the synthesized silver nanoparticles were characterized by Ultraviolet-visible spectroscopy (UV-vis), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Strong surface plasmon resonance peaks were observed at about 400 nm and the synthesized silver nanoparticles were spherical with an average particle size of 15 ± 2.3 nm with a narrow particle size distribution. XRD analysis showed that the silver nanoparticles were face centered cubic (fcc) structure. The degradation of tapioca via an acidic and alkaline treatment was investigated by ATR FT-IR spectroscopy. The synthesized silver nanoparticles are stable in aqueous solution over a period of two months at room temperature. The antibacterial activities of the silver nanoparticles were tested against Staphylococcus aureus and Escherichia coli bacteria. A very low concentration of silver nanoparticles (2.5 ppm) was shown to be an effective bactericide.
DOI: 10.14457/cu.the.2011.53
title: Production development of violacein from marine bacteria Pseudoalteromonas sp. using adsorbent resin

description: Violacein is a violet indolealkaloid produced by several species of bacteria.Due to its multiple biological activities such as antitumor, antimicrobial and antiviral properties and need for large scale supply, effective production has been developed. However, the developmenthas been limited due to end-product inhibition of violacein.In this study, five different adsorbent resins, namely HP20, XAD4, XAD7, XAD16 and XAD1180 were evaluated for efficiency to enhance violacein production from marine bacteria Pseudoalteromonassp. RAD-5DP. Dispersion of XAD1180 enhanced the highest yield, particularly when 2% w.v-1 XAD1180 was added to medium after 16 h of cultivation. This method could produce 2-fold increment in violacein production when compared with conventional fermentation and maximum yield of violacein was up to 3.285 g.L-1.