cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2014.387
title: INFLUENCE OF RESIDUAL SURFACE TENSION ON STRAIGHT CRACK UNDER MODE-I LOADING

description: In this thesis, the influence of residual surface tension on the near-tip elastic field of a straight crack under mode-I loading condition is fully investigated. The surface effect via the Gurtin-Murdoch surface elasticity model without the in-plane modulus is integrated into the classical theory of linear elasticity to capture the nano-scale influence and the size-dependent behavior of the elastic field. The governing equation is formulated in terms of the crack-opening displacement and finally expressed in a form of an integro-differential equation involving a strongly singular kernel. A weighted residual technique together with the integration by parts is utilized to derive the symmetric weak-form equation involving only a weakly singular kernel. Standard Galerkin method is then adopted to construct numerical solutions of the weak-form equation. In the approximation, basis functions constructed locally on linear, quadratic, cubic, and Hermite finite element mesh have been employed. The rate of convergence of numerical solutions is fully explored and it is found that approximations using quadratic, cubic and Hermite shape functions yield the same rate of convergence that is higher than that of the linear case and the gradient of the crack-opening displacement becomes finite at the crack-tip for non-zero residual surface tension. Based on an extensive parametric study, it is indicated that the residual surface tension not only significantly reduces the overall crack-opening displacement and the near-tip stresses but also weakens the crack-tip stress singularity and renders the predicted solutions strongly size-dependent.
DOI: 10.14457/cu.the.2014.388
title: A SURVEY OF CANINE VECTOR-BORNE BLOOD PARASITES IN THE PLAIN REGIONS OF CAMBODIA

description: Canine vector-borne blood parasites (CVBBPs) are considered as blood parasitic infection in dogs which is transmitted by vectors. The objective of this study is to survey blood parasites of dogs in the plain region Cambodia by using conventional and molecular methods to confirm intracellular parasites from the suspected samples. The study was carried out from November 2014 to February 2015. The total of 444 dogs was found only 5 infected dogs (1.13%) with a low parasitemia and low parasitic infection including Dirofilaria immitis (0.45%), Brugia pahangi (0.22%) were found in Prey Veng and Kompong Chhnang province by Buffy coat stained blood smear with giemsa staining and acid phosphatage activity confirmation, and followed by B. canis (0.22%) was collected from a private clinic, Phnom Penh, and co-infection of Ehrlichia canis with Anaplasma platys (0.22%) was indicated in Takeo by Buffy coat stained blood smear staining and PCR confirmation. Moreover, three vectors, Ctenocephalides canis, Rhipicephalus sanguineus and Heterodoxus spiniger, affecting dogs were also found in 62.8%, 18.5% and 12.2%, respectively. C. canis was the most common presence than tick and lice in our areas. Therefore, this result may indicate that there is low parasitemia or low of tick transmission. Certainly, the prevalence of parasitic case infections may change if other diagnostic methods with a higher sensitivity, specificity and accuracy, e.g. molecular methods. However, it is the first investigation of CVBBPs. It is expected to develop a better understanding in diagnostic techniques and improving knowledge the pet owners, veterinarians to beware of accretion regarding CVBBPs infection in Cambodia.
DOI: 10.14457/cu.the.2014.389
title: SURVEY AND IDENTIFICATION OF GASTRO INTESTINAL PARASITES IN DOMESTIC CHICKEN (GALLUS DOMESTICUS L.) IN LOWLAND OF CAMBODIA

description: In Cambodia, domestic chickens or backyard chickens are source of protein that are importance for people nowadays. Farmers raise the domestic chickens on their backyard. Chickens eat either insects or earthworm as intermediate host for parasites. Some of gastrointestinal parasites causes of zoonosis. The objective of this study was survey and identification gastrointestinal parasites in domestic chickens of lowland regions in Cambodia. 509 samples of gastrointestinal tract (GI) from carcasses were bought from markets and 409 fecal samples from caecum were examined by using the conventional methods. The GI samples were performed by gross examination and observed under stereo and light microscope. The fecal specimens were examined by simple sedimentation and simple floatation techniques. 483 from 509 (94.89%) specimens found the worm in GI tract. The most common parasites were nematode, cestode and trematode. They were positive 86.57, 84.47 and 6.09%, respectively. Echinostome, which is a zoonosis, was found 24 from 509 carcasses (4.71%) in Kandal, Prey Veng and Takeo provinces. The fecal examination was GI parasite positive 92.9% (380/409). The common parasites eggs were nematode, cestode, trematode and Eimeria oocysts,. They were positive 89.48, 13.2, 5.13% and , 60.88, respectively. This study showed the high prevalence of GI parasites in domestic chickens of lowland areas in Cambodia. Regarding from this information, it will be helpful for the veterinarians and researchers to design strategies for prevention and treatment the GI parasites in order to control some parasites that are causes of zoonosis
DOI: 10.14457/cu.the.2014.390
title: ARI: THE DYNAMICS OF CONTEMPORARY URBAN CHANGE IN A BANGKOK NEIGHBORHOOD

description: In urban settings in the West, emerging neighborhoods are often viewed as products of residential and commercial gentrification: the influx of creative and/or affluent populations and new entrepreneurial retail capital into poorer, working class communities. While residential and commercial gentrification can significantly upgrade a neighborhood’s status and image within the wider context of the surrounding city, the process is often criticized for leading to the displacement of the neighborhood’s original population and the closure of traditional businesses. This thesis – a first of its kind within the field of Thai Studies – presents a micro study of contemporary neighborhood change in Thailand and considers the relevance of gentrification as an explanatory model. Centered on the affluent residential neighborhood of Ari in northern Bangkok, the study documents how, since the mid­2000s, the area has witnessed a remarkable increase in the number of fashionable restaurants and cafés and high-end condominium buildings, and identifies design savvy entrepreneurs, media, real estate developers, and mass transit as among the agents behind these developments. The study also surveys the state of Ari’s traditional foodscape – the street food vendors and the local eateries based around the neighborhood’s BTS station – and considers its current position and future in the neighborhood. While many of the dynamics at play are similar to western models of gentrification, the thesis argues that Ari’s status as a traditionally privileged community suggests that the relationship between emerging neighborhoods and gentrification in Bangkok needs to be considered within the broader cultural context of Thai society, with a particular view to the motivations, values, and aspirations of a new cosmopolitan generation of élite consumers and entrepreneurs.
DOI: 10.14457/cu.the.2014.391
title: PERFORMANCE ANALYSIS OF PURCHASER PROVIDER SPLIT AND DIRECT SERVICE PROVISION UNDER THE NATIONAL HEALTH INSURANCE FUND IN SUDAN: PRIMARY CARE CASE STUDY IN WHITE NILE STATE

description: Background: Gatekeepers in Sudan has a minor role in providing curative care and most of them are inactive and ignored by MOH. Objective: This paper is interested in assessing the performance of primary care units under National Health Insurance fund owned and contracted by this organization. Methods: Two dimensions were analyzed to assess performance of those facilities using historical cost data for the year 2013 to analyze the operational cost and a checklist developed by the author to measure the structure of the quality of services provided considering the lack of local accreditation system, a total number of 39 facilities serving in White Nile state were chosen for the study. The secondary cost data were collected from the register of the facilities. Data of the checklist obtained by observation for the available facilities of services provided within the care units was collected in March 2014. Results: expenditure of the NHIF facilities incurred in services reached 97% of their total costs while it was 96% for the contracted NHIF type of primary care. Considering quality NHIF provider showed also little increase in provided services with no significant variation from contracted ones. Conclusion: The overall outcomes seems to be direct health facilities provide high-cost services with decent quality of services compared to an acceptable costs for the indirect with variable quality of care. Recommendation: public financing of primary health care units will support affordable and higher quality of care closer to population homes. Moreover, the governance of those facilities is also need.
DOI: 10.14457/cu.the.2014.392
title: EFFECT OF BIOFILM ON FORMATION AND REDUCTION OF DISINFECTION BY-PRODUCTS

description: The main objective of this study is to investigate the DBPs reduction and abiotic control by active and inactive biofilm as well as DBPs formation potential of biofilm in water distribution system in order to understand fate and transportation of DBPs that might be occurred by biofilm in water distribution system. The biofilm used in study was collected from water reservoir in Bangkok metropolitan area. The reduction and abiotic control of four representatives of main DBPs groups (chloroform (CF), dichloroacetic acid (DCAA), dichloroacetonitrile (DCAN) and 1,1 Dichloro-1-propanone (1,1 DCP)) were conducted by batch experiment under controlling pH at 7. The obtained results shown that DCAN is the most biological consumable followed by 1,1 DCP, therefore it might cause the reduction of DCAN and 1,1 DCP concentration in water distribution system. However, CF and DCAA were slightly consumed by physical attachment on biofilm surface. DBPs formation potential of biofilm and extracted extracellular polymeric substance (EPS) were conducted by chlorination for 7 days to obtain the maximum formation potential of each DBPs species. Cellular carbon might have higher potential to form CF than the carbon source from EPS. HAAs formation potential has closer relation to the carbon source from EPS than carbon from cellular source. And cellular carbon source of biofilm might be the main carbon source for HKs formation potential. Carbonaceous DBPs had higher formation potential and had a trend to produce higher halogenic DBPs.
DOI: 10.14457/cu.the.2014.393
title: THE ROLE OF THE MILITARY IN POLITICS AND TRANSITION TO CONSOLIDATED DEMOCRACY: THE CASE STUDY OF SOUTH KOREA AND THAILAND

description: This research examines the roles of military that influence the process of democratization in South Korea and Thailand. This research also studies the factors that contribute to the establishment of a consolidated democracy in South Korea by focusing on the periods when the democratization process started in South Korea in 1980 until the end of Kim Dae-Jung’s presidency in 2003. For Thailand, the focus begins after Black May 1992 until 2014, when the last coup d’état occurred. This research is a qualitative study, employing a descriptive and analytic approach drawing on mostly secondary sources both in Thai and English. The research results showed that in South Korea, military intervention emerged as a result of political weakness, social chaos and military advantage. In Thailand, military intervention has occurred due to social disharmony, e.g. political crisis, social disunity and the military’s conflict of interest. When the two countries transformed from authoritarian to democratic states, Korea’s robust civil society was the crucial factor leading to democratic consolidation. The dividing of Thailand’s civil society and the middle class returning to support authoritarianism are the factors paving the way for military re-intervention. Thus, they could not develop the consolidated democracy like South Korea.
DOI: 10.14457/cu.the.2014.394
title: REMOVAL OF DISINFECTION BY-PRODUCTS IN WATER BY ADSORPTION ON THIOL-FUNCTIONALIZED MESOPOROUS MATERIAL CONTAINING IN ALGINATE BEAD

description: The purpose of this research was to examine adsorption mechanism of DBPs including haloacetonitrile, trihalomethane, halogenated ketone, and haloacetic acid on thiol-functionalized hexagonal mesoporous silicates based on natural rubber containing with alginate bead adsorbent (AL:NR/HMS-SH) comparing with granular activated carbon (GAC). First, NR/HMS-SH was synthesized via in-situ sol-gel method, and then was prepared into beads form in calcium chloride solution. The synthesized material was characterized the physicochemical properties by various techniques such as Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and N2 adsorption-desorption isotherm. The adsorption kinetics and adsorption isotherms were studied to examine the adsorption mechanism under batch condition. According to the kinetic study, the adsorption rate and capacity of both adsorbent exhibited the higher amount on trichloromethane (TCM) than dichloroacetonitrile (DCAN) and 1,1,1-trichloroacetone (TCA) respectively. The adsorption isotherm models including Linear, Langmiur, and Fruendlich models were estimated to examine the adsorption mechanism on adsorption isotherm study. It found that the lower water solubility DBPs which had high hydrophobicity showed higher adsorption capacity than the higher water solubility DBPs. In addition, the present of other DBPs species in the solution as mixture affected to the adsorption efficiencies of each DBP. Moreover, this research investigated the effect of natural organic matter (NOM) including hydrophilic-like (HPI) and hydrophobic-like (HPO) natural organic matter on DCAN adsorption on synthesized adsorbent. The results appeared that the adsorption of DCAN on synthesized adsorbent was affected by HPO NOM more than HPI NOM by reducing the adsorption capacity of DCAN due to the competitive adsorption on adsorbent surface. The adsorption of DCAN on fixed bed condition was investigated by varying bed depth. It revealed that the breakthrough time at breakthrough concentration increased with increasing of bed volume. This might because the higher of bed volume had more available sorption site for particle to be adsorbed.
DOI: 10.14457/cu.the.2014.395
title: ISOLATION AND CHARACTERIZATION OF DICHLORVOS-DEGRADING BACTERIA FROM CONTAMINATED SOIL

description: Dichlorvos (2,2-dimethyl dichlorovinyl phosphate) is one of the major organophosphate insecticides. It has been widely used to control various insect pests. There is possibility of dichlorvos contamination to the environment. This study aimed on biodegradation of dichlorvos. Dichlorvos-degrading consortium and pure cultures were enriched from contaminated soil. Dichlorvos degradation under different dichlorvos concentrations (50, 100, 200, 400 and 800 mg/L) and pHs (pH 4, 5, 6, 7 and 8) was focused. In addition, the degradation kinetic estimation and metabolic intermediate monitoring were conducted. A consortium and pure cultures well utilize dichlorvos. Three selected isolates were identified as Klebsiella sp. strain DV1 (DV1), Enterobacter sp. strain DV2 (DV2) and Klebsiella pneumoniae strain DV3 (DV3). Under different dichlorvos concentrations, abiotic process (hydrolysis) could remove dichlorvos for 0.10-0.28 1/d while biodegradation (with hydrolysis) by a consortium and pure cultures well degraded dichlorvos with rate constance of 0.17-0.28 and 0.24-0.43 1/d, respectively. At high dichlorvos concentrations (more than 400 mg/L), microbial degradation could enhance the dichlorvos removal. For effect of pH, hydrolysis well removed dichlorvos at pH of 7 to 8 (0.67-0.80 1/d) while the dichlorvos removal at pHs ranging from 4 to 6 was 0.04 to 0.30 1/d. At acidic pHs, biodegradation (with hydrolysis) by a consortium, DV1, DV2 and DV3 reduced dichlorvos of 0.06-0.13, 0.05-0.38, 0.07-0.40 and 0.07-0.38, respectively. During the dichlorvos degradation experiment, three metabolites including 2-chloroethyl dimethyl phosphate, triethyl phosphate and trimethyl phosphate were detected in both abiotic (hydrolysis) and biodegradation processes. It could say that abiotic process by hydrolysis reaction influenced dichlorvos degradation. Biodegradation could improve the removal performance, espicailly under the conditions with high contaminated concentration or acidic pH. The consortium and isolates are efficient in dichlorvos degradation and have potential for dichlorvos remediation.
DOI: 10.14457/cu.the.2014.396
title: PHOTOCATALYTIC DEGRADATION OF PROFENOFOS BY ELECTROSPUN TITANIUM (IV) DIOXIDE NANOFIBERS WITH UV AND VUV IRRADIATION

description: The photolytic and photocatalytic degradation of profenofos, an organophosphate pesticide, in aqueous solutions under UV, VUV, UV/TiO2, and VUV/TiO2 systems in both Deguss-P25 nanoparticles and synthesized electrospun TiO2/PVP composite nanofibers were investigated. The experiments were performed at 10 mg/L of profenofos, pH 7 (unbuffered), room temperature (25 ºC ± 3), 30 min of reaction time and dose of TiO2 of 0, 0.05, 0.1, and 0.2 g/L. Photodegradation performances of profenofos including removal efficiency, kinetic rate and mineralization were in the order: VUV/TiO2 &gt; VUV &gt; UV/TiO2 &gt; UV. Particularly, the VUV/TiO2 system in both P25 and nanofibers showed the highest removal efficiency for 98% and 97%, respectively, indicating that the presence of titania photocatalyst could significantly improve the removal of profenofos in aqueous solution. Increasing of titania (both Deguss-P25 and nanofibers) significantly enhanced removal efficiency, kinetic rate and mineralization of profenofos under UV and VUV radiation due to more active sites on titania surface area, where the photocatalysis reaction occurred, and more formation hydroxyl radicals in the system. The kinetic rate results indicated that the degradation kinetic of profenofos by photolytic process followed first kinetic model and kinetic of profenofos by photolytic process followed pseudo-first kinetic model, and the results showed that photocatalytic degradation with Deguss-P25 had similarly resulted to TiO2 nanofibers. Reusability of TiO2 had been investigated for ten consecutive cycles, and the results revealed that TiO2 nanofibers had more reusability than P25. Due to easy separation, readily easy reusable, eco – friendly solid photocatalyst, high activity, long-term stability, and insignificant loss in adsorption performance, TiO2 nanofibers present appropriate properties to be a catalyst for photocatalytic purification of organophosphate pesticides in water sources and would be attractive to develop a real scale application.
DOI: 10.15468/ge1yia
title: Genetic delimitation of Pristimantis orestes (Lynch, 1979) and P. saturninoi Brito et al., 2017 and description of two new terrestrial frogs from the Pristimantis orestes species group (Anura, Strabomantidae)

description: This dataset contains the digitized treatments in Plazi based on the original journal article Urgiles, Veronica L., Szekely, Paul, Szekely, Diana, Christodoulides, Nicholas, Sanchez-Nivicela, Juan C., Savage, Anna E. (2019): Genetic delimitation of Pristimantis orestes (Lynch, 1979) and P. saturninoi Brito et al., 2017 and description of two new terrestrial frogs from the Pristimantis orestes species group (Anura, Strabomantidae). ZooKeys 864: 111-146, DOI: http://dx.doi.org/10.3897/zookeys.864.35102, URL: http://dx.doi.org/10.3897/zookeys.864.35102
DOI: 10.15468/racugj
title: A new genus and species of berothids (Insecta, Neuroptera) from the Late Cretaceous Myanmar amber

description: This dataset contains the digitized treatments in Plazi based on the original journal article Yang, Qiang, Shi, Chaofan, Ren, Dong (2019): A new genus and species of berothids (Insecta, Neuroptera) from the Late Cretaceous Myanmar amber. ZooKeys 864: 99-109, DOI: http://dx.doi.org/10.3897/zookeys.864.35271, URL: http://dx.doi.org/10.3897/zookeys.864.35271
DOI: 10.14457/cu.the.2014.397
title: RELATIONSHIPS BETWEEN DISSOLVED ORGANIC NITROGEN (DON) AND BIODEGRADABLE DISSOLVED ORGANIC NITROGEN (BDON) TO HALOACETONITRILE FORMATION POTENTIALIN WATER TREATMENT PLANTS

description: Nitrogenous disinfection by-products (N-DBPs) have become an issue of concern in water treatment plant (WTP) since they have more toxicity more than carbonaceous disinfection by-products (C-DBPs) such as trihalomethanes. Dissolved organic nitrogen (DON) in natural water source is known as precursors of nitrogenous disinfection by-products (N-DBPs). This study investigated the fate of total dissolved nitrogen (TDN), dissolved inorganic nitrogen, DON, and biodegradable DON (BDON) along the water treatment trains of Khon Kaen Municipality (Kota WTP (KWTP) and Tapra WTP (TWTP), and Khon Kaen University (KKU Water Treatment plant (KKUWTP)). Occurrence and formation potential of four haloacetonitriles (HANs) including monochloroacetonitrile (MCAN), dichloroacetonitrile (DCAN), trichloroacetonitrile (TCAN), and dibromoacetonitrile (DBAN) were determined. In addition, the effect of ozonation on HAN formation potential (HANFP) was studied. The result shows that DON concentrations of KWTP, TWTP, and KKUWTP ranged from 0.44 to 0.66 mg-N/L. DON at this level was not effectively removed by conventional water treatment plants. BDON accounted for approximately 50% of DON pool and contributed to HANFP formation based on the formation potential test of three water treatment plants (R2 of 0.34-0.74). Ozonation increased the BDON and HANFP of water samples. Total HANs concentration in finished waters ranged between 4 to 15 µg/L. Among HANs being measured, DCAN was the most abundant HAN species contributing more than 50% in samples. The finding of this research reveals that BDON was an important organic fraction to the HAN formation. Removal of BDON would also reduce the HAN concentrations. Water utilities might find this information useful for controlling N-BDPs in drinking water.