bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge, attitude and practices on potato pest management of ethnic farmers in southern Shan state, Myanmar
Authors:   , Aung Pyae 
Published: September 2023

Potato is cultivated as the main tuber crop which is essential for ethnic farmers’ household income in Southern Shan State, Myanmar. Most ethnic farmers use chemical pesticides widely to enhance crop yield and to control pests in the farm. The use of chemical pesticides could lead to a series of health impacts of the farmers and environmental issues. The main aim of the study is to explore farmers’ knowledge, attitude and current farm practices on pest management in potato production. The participants of 100 farmers were chosen from each village with a cluster and purposive sampling technique using structured questionnaires to collect the data from a village in Kalaw Township. The finding showed that 72% of farmers use only chemical pesticides due to more effective and only 28% of the farmers used chemical and alternative methods. In the result, 15% of the Taung Yo ethnic farmers, 5% of the Pa-O, and 8% of the Danu are used alternative pest control methods (biological, physical and cultural pest control method). Physical and mechanical method is one of the most applied methods for the ethnic farmers in potato production. Most farmers received training from pesticide companies’ staff and whereas only 3% received information from governmental officials. Half of the farmers have moderate knowledge level on pest management. Most farmers have low attitude on biological and physical pest control methods in the study area. Marital status, type of farmland, farm experience and other crops plantation were significantly related to pest control methods in potato crop production. This study will help extension workers to provide appropriate training and improve farmers’ knowledge, attitude and practices of pest control management for the highland crop.
Pore pressure prediction using combination drilling efficiency and hydro-mechanical specific energy methods
Authors:   , Otolomo Munawir 
Published: September 2023

Several methods of pore pressure prediction using drilling parameters were introduced and improved to meet the challenges of accurate prediction at a relatively low cost. Knowledge of pore pressure is essential for safe well planning, cost-effective drilling, and operational decision-making. Conventional methods in pore pressure prediction using drilling parameters have limitations on its application of making the normal compaction trendline that is only applicable in clean shale intervals. In this work, the concept of drilling efficiency (DE) and hydro-mechanical specific energy (HMSE) for predicting formation pore pressure is proposed. This method, termed DE-HMSE, is based on the theory that the energy required to break the rock with the bit is a function of in-situ rock’s conditions during drilling. HMSE is the amount of axial, torsional, and hydraulic energy required to break and remove a unit volume of rock, and DE is defined as the ratio of the rock’s confined compressive strength (CCS) to the HMSE. The pore pressure prediction using DE-HMSE method is performed in two wells in Australia and three wells in Thailand. The results are compared to the actual measured pressure in the field and pore pressure prediction from conventional methods such as d-exponent, MSE, HMSE, and DEMSE methods. The results show that all the methods have inaccurate predictions of pore pressure in the depleted zone. However, the DE-HMSE method has the smallest root mean square (RMS) error and better agreement with the measured formation pore pressure compared to the other conventional methods.
Life cycle assessment of canned fish production in Thailand
Authors:   , Kraiwed Chanya 
Published: September 2023

The canned fish industry is one of the world's most popular exports in Thailand. Moreover, the canned seafood industry ranks fourth in terms of energy consumption, which compares to all industry group (Wiriyatangsakul, 2021). Commercial competitiveness, on the other hand, must be improved because of the competitive conditions in the global market. Thus, this study evaluates the environmental performance of a factory in Samut Sakhon, Thailand, using Life Cycle Assessment (LCA) with Gate-to-Gate approach and setting functional unit by 1 ton fresh fish entering to process. The study used the SimaPro LCA application with the CML 2 baseline 2000 method, which covers ten impact categories. The result of LCA showed that human toxicity (3,800 kg 1,4-DB eq/ FU), global warming (2,470 kg CO2 eq/ FU), marine aquatic ecotoxicity (24,100 kg 1,4-DB eq/ FU), freshwater aquatic ecotoxicity (22.5 kg 1,4-DB eq/ FU), and terrestrial ecotoxicity (2.72 kg 1,4-DB eq/ FU) were found to have the greatest environmental impacts from 10 categories. Those categories are caused by packaging and steam consumption by 49% and 48%, respectively. Therefore, this study utilized clean technology to assess technical, economic, and environmental feasibility in order to prioritize resource consumption and propose options. The result showed that packaging, steam and water consumption were prioritized in the top three of CT, which was consistent with the LCA results except for water consumption. The following are some options for reducing packaging, water, and steam consumption: Use of packaging as primary packaging (glass, plastic, and recycled material) has the potential to reduce the environmental border to air by approximately 95% and the environmental border to water by 40 to 50%. (J. Laso, 2016). Steam consumption options are using biomass residue as a secondary combustion material in the production of steam could reduce CO2 eq by 38,308 kg CO2 eq/year, using wood pellet biomass could reduce CO2 eq by up to 33,311 kg CO2 eq/year, and improving boiler combustion by installing oxygen detectors could reduce CO2 eq by up to 19,149 kg CO2 eq/year. Water consumption options are reusing water in washing can packaging could reduce CO2 eq up to 2,003 kg CO2 eq/year, and Installing water high-pressure cleaner for washing floor could reduce CO2 eq up to 1,698 kg CO2 eq/year.
Assessment of greenhouse gases emissions from dairy cattle production in Thailand
Authors:   , Thu Phoo 
Published: September 2023

Thailand’s agriculture sector plays a vital role in driving economic growth. Globally, livestock production is estimated to contribute about 18% of greenhouse gas (GHG) emissions. Despite its importance, there is a relative lack of research on GHGs assessment in the livestock sector in Thailand. The aim of this research was to estimate GHGs emissions from dairy cattle production in Saraburi and Ratchaburi provinces of Thailand. The 2019 Refinement to the 2006 IPCC guidelines for national greenhouse gas inventories was applied in this research. Twenty dairy farms (n=20) including both small farms (n=10) and medium farms (n=10) were selected as the case studies. The results revealed that total GHGs emissions from 20 farms were 138.83 kg carbon dioxide equivalent (kg CO2eq) from all activities. Methane (CH4) emissions from both enteric fermentation and manure management were accounted for 98%. Nitrous oxide (N2O) emissions from manure management (both direct and indirect) and from manure applied to soil were only 1%. Small size of farms emitted GHG in the range of 3.82 to16.01 kg CO2eq (0.19 – 3.20 kgCO2 eq/head of cattle of GHG emission intensity (ET). Whereas, medium farms contributed GHG range from 2.74 and 4.22 kg CO2eq (0.09-0.19 kgCO2 eq/head of cattle of ET) from all activities. Farms in Ratchaburi emitted the emission in the range of 3.25-16.01 kg CO2eq per cow but farms in Saraburi contributed to total GHGs emission in the range of 2.74 - 4.07 kg CO2eq. Besides, ET range in Ratchaburi was 0.15-3.20 kg CO2eq and ET range in Saraburi was 0.09-0.21 kg CO2eq. By considering emissions activities, CH4 emission from enteric fermentation is much higher than those from manure management. By considering waste management in a dairy farm, as the manure solid storage system emitted higher emissions than the liquid/slurry system, it is necessary for farm managers and related stakeholders to properly manage the herds and farms to lower methane emissions, especially from manure management practices (i.e., installation of anaerobic digestion, composting, and manure drying practices, etc.). Besides, it is necessary to consider other factors that reduce emissions such as improving feeding quality and keeping good animal husbandry practices.
Impacts of the Thai canal on liner shipping container network
Authors:   , Yanpisitkul Krittitee 
Published: September 2023

This thesis proposes a mathematical model that imitates the flow of containers in the container liner shipping network — particularly, in the Indo-Pacific region, where the Strait of Malacca is located — in order to assess the potential impact of the proposed Thai Canal on such a network. This model is constructed based on a combination of two network problems, namely (i) the Multi-commodity Minimum Cost Network Flow Problem (MCNFP) and (ii) the Liner Shipping Fleet Deployment Problem (LSFDP), which allows a more realistic representation of international trade, while taking to account congestion at container ports at the same time. We validate the resulting mixed-integer linear programming model (MILP) using information of the container liner shipping network in 2015, assuming that liners provide their services based solely on the costs. Based on our computational results, the resulting container flows from the proposed model seem to well align with the actual data at the country level — but with some differences at the port level, due to the posed assumption. Once validated, the model is then applied to a network configuration where the Thai Canal serves as an alternative route to the Strait of Malacca. We explore two distinct scenarios: in the first, the Thai Canal reduces transit time by 2 days; in the second, we consider a scenario where the Thai Canal does not offer any transit time savings. Our experimental results indicate that, under both scenarios, the Thai Canal could instigate a substantial shift in traffic volume from the Strait of Malacca — leading to a significant decrease in port calls and transshipment operations of ports around the Strait of Malacca, particularly the port of Singapore.
The influence of K-pop Thai fan loyalty on the image of Korean male idol: a case study of Lim Youngmin
Authors:   , Wongsantimeth Nattanon 
Published: September 2023

K-pop boyband artist AB6IX from South Korea, Lim Youngmin, has won the hearts of Thai fans that have developed into loyalness to him. However, Lim Youngmin has faced situations that affected the artist's idol image, and this resulted in the inability of performing as an artist in the meantime, from an incident in 2020, after being arrested for DUI - driving under the influence of alcohol. He had his driving license revoked in the same year which might force him to decide to enlist himself in the military, which is a requirement for all male citizens of South Korea without exception. All the situations fans have faced are proof that they are loyal fans and are satisfied by the activities that Lim Youngmin has accumulated thus having the confidence to support Lim Youngmin. Furthermore, this thesis will analyze the factors that affect the satisfaction of loyal fans through two methods. Firstly, an in-depth interview with two fans, namely a Twitter fan page administrator and a loyal fan of Youngmin for over five years. Secondly, by analyzing the results of the answers from a fan questionnaire taken by 400 people. This research is likely to open up more or less perspectives on fans' loyalty toward artists.
The portrayal of queerness in Lee-Song Hee-Il's films through intersectional lens
Authors:   , Sangpetch Tanin 
Published: September 2023

This research investigates the representation of queerness and how individuals' different social identities produce different kinds of tensions among queer people through the concept of intersectionality. The research analyzes the film No Regret, White Night and Night Flight. The analysis includes two themes: 1) The Violence and Harassment against Queer and 2) The Representation of Gender and Sexuality. The study seeks to understand how intersecting components are represented along with the two themes. The result of the study reveals that queers who have a good academic performance or high SES seem to bear much pressure and high expectation to maintain their status or achieve upward social mobility, so it is difficult for them to express their identities freely, because queerness is in conflict with Korea’s traditional gender norms. Besides, queers who are considered as less masculine are targeted to be sexual assault victim. This leads to the difficulty of identity expression among queers and some of them have to act differently from who they are, to avoid being victims of dehumanization. In conclusion, this study argues that social status and hegemonic masculinity lead to different levels of intolerance of queerness in the context of Korean society.
Development of stiffness sensing and adaptive grasping with soft pneumatic grippers
Authors:   , Sithiwichankit Chaiwuth 
Published: September 2023

This study presents a framework for stiffness sensing and adaptive grasping using soft pneumatic grippers (SPGs). The motivation was to imitate the capabilities of human hands. The challenge was the compliance of soft pneumatic actuators (SPAs). The study associated the behaviors of grasped objects with those on SPAs, introduced a new concept of SPA modeling, and proposed a method for stiffness sensing through SPG pincer grasping. Compression testing was conducted for validation. A technique for forecasting deformation and force on grasped objects based on their stiffness was established, and a control law was elaborated. The presented technique and control architecture were validated at different input pressure conditions. The proposed method yielded similar stiffness trends with slight deviations compared to compression testing and demonstrated the potential for manual classification of samples. The presented technique provided small deviations in deformation but significant errors in force. A major limitation was caused be the using of computer vision for inspecting SPA deformation. To overcome this limitation further studies on the direct sensing of SPA deformation is recommended Overall, this study contributes to the field of soft robotics and object classification by integrating stiffness sensing and SPG grasping in a single action, leading to the next level of adaptive SPG grasping.
Generation of tolerogenic dendritic cells from Fcgr2b deficient lupus-prone mice for the model of SLE therapy
Authors:   , Khiewkamrop Phuriwat 
Published: September 2023

Tolerogenic dendritic cells (tolDCs) are DCs with an immunoregulatory function, which can induce regulatory T cells (Tregs) and suppress the immune response. Currently, tolDCs-based treatment has become a promising therapeutic approach for organ transplantation and autoimmune disease. FcgRIIB is an inhibitory receptor widely expressed in B cells, myeloid cells, and DCs. The ablation of FcgRIIB in the murine model shows a spontaneous development of a lupus-like disease and might affect other immune cell regulation. There was limited information on tolDC induction in FcgRIIB defective mice. Thus, in this study, we studied the generation of tolDCs from the bone marrow-derived dendritic cells (BMDCs) of Fcgr2b-/- mice by various tolerogenic agents. As expected, when compared with wide-type (WT) control, bone marrow-derived DCs of Fcgr2b-/- mice showed higher activation and pro-inflammatory cytokine productionupon LPS stimulation when compared with wide-type (WT) control. Tolerogenic agents can partially reduce the activation and cytokine production of LPS-stimulated Fcgr2b-/- BMDCs. Mainly, dexamethasone-treated Fcgr2b-/- BMDCs exhibited a notable decrease in pro-inflammatory cytokine production and showed an increase in IL-10 production in response to LPS stimulation. Furthermore, we demonstrated that dexamethasone-conditioned Fcgr2b-/- tolDCs could mediate Treg expansion ex vivo.

For the in vivo treatment of lupus disease, dexamethasone-conditioned Fcgr2b-/- tolDCs were adoptively transferred to Fcgr2b-/- lupus-prone mice, mediated Foxp3+ Treg expansion in the spleens and suppressed anti-double strand DNA autoantibodies in the serum. In addition, to generate tolDCs in vivo more conveniently, dexamethasone-loaded nanoparticles (DexaNPs) designed to target DCs were subcutaneously injected into Fcgr2b-/- lupus-prone mice. The DexaNPs-treated mice showed a significantly enhanced expression of PD-L1 on CD11c+ DCs, increased FoxP3+ Treg numbers, and decreased serum anti-double strand DNA autoantibodies.

In conclusion, our study demonstrated that dexamethasone is the most potent drug that can induce tolerogenic DCs and lead to better clinical outcome in Fcgr2b-/- lupus-prone mice. This may be helpful for DC-based treatment in SLE patients but not limited to FcgrIIb gene polymorphism.
The Inhibitory Effect of combined human cathelicidin with antibiotics on antibiotic-resistant Cutibacterium acnes
Authors:   , Sriharat Rakwaree 
Published: September 2023

Cutibacterium acnes is one of the major factors involved in the pathogenesis of acne vulgaris which sometimes develops antibiotic resistance particularly clindamycin- and doxycycline-resistant C. acnes. In this study, human cathelicidin (LL-37) which is a type of human antimicrobial peptide against a wide range of microorganisms was used. We investigated the antimicrobial activity of LL-37 on C. acnes isolated from patients with acne at the King Chulalongkorn Hospital using broth microdilution. Moreover, the synergistic effects of LL-37 with clindamycin and doxycycline were investigated using checkerboard microdilution, and time-killing assays. The cytotoxicity of LL-37 was also evaluated by MTT assay. The results demonstrated that LL-37 had an inhibitory effect against all clinical isolates of a C. acnes including antibiotic-resistant strain at concentrations ranging from 25 to 50 µg/ml. Furthermore, LL-37 at the concentration of 0.1µg/ml showed a synergistic effect with doxycycline at the concentration of 8 µg/ml with the fractional inhibitory concentration index (FICI) of 0.50. However, the combination of LL-37 and doxycycline showed a significant cytotoxic effect on human keratinocytes. Therefore, better understandings how to reduce the cytotoxicity of this drug combination are required, and the synergistic effect of LL-37 with other topical antibiotics is probably needed.
High-pressure study of hybrid organic-inorganic perovskites and double perovskites
Authors:   , Ardimas Ardimas 
Published: September 2023

Hybrid and double perovskite have been of great attraction for optoelectronic devices. However, exploring a feasible method to enhance their optical abilities remains a considerable challenge. Here, the researcher reports the pressure-induced phase transition as an effective way to modify optoelectronic properties. The researcher successfully synthesized the hybrid perovskite (MAPbI3) and the double perovskite (Cs2TiBr6) by the inverse temperature crystallization (ITC) and solution method, respectively. the researcher studied the pressure dependence phase transition and photoluminescence (PL) by placing the sample into diamond anvil cells (DACs) through Raman spectroscopy. The first principles method was used to support the idea. The researcher observed at least 3 phase transition of MAPbI3 under hydrostatic compression up to 5.34 GPa. The transformation from dynamic to static phases occurs at 3.26 GPa. The static phase shows the disappearance of organic CH3NH3 vibration. The researcher also observed the structural deformation of Cs2TiBr6 by a similar method. However, Cs2TiBr6 exhibit a distinct phase transition under high pressure of 11.9 GPa. New Raman peaks of octahedral TiBr6 indicate high interaction and indicate the evolution from alpha phase to beta phase. Subsequently, the emission undergoes a red shift and a significant broadening under further pressure up to 12.6 GPa.
Improving quality of CVD graphene grown on the copper foil by physical polishing electropolishing and thermal annealing pretreatment processes
Authors:   , Sirisom Methawut 
Published: September 2023

This study optimized the pretreatment processes (physical polishing (PP), electropolishing (EP), and thermal annealing) for high-quality graphene growth on thin copper (Cu) foils. PP using Brasso solvent was applied to smoothen the substrate surface, followed by EP with H3PO4 to reduce rolling lines and surface contamination. The EP process involved different H3PO4 concentrations (30-60%) and etching times (60-120 seconds). After thermal annealing at 860-940 ºC, graphene growth was performed using direct-liquid-injection chemical-vapor deposition with cyclohexane (C6H12) as the carbon precursor and nitrogen as the carrier gas. The optimized conditions involved PP and EP with 45% H3PO4 concentration and 90 seconds etching. At an annealing temperature of 900 ºC, monolayer graphene was successfully formed. Lower cyclohexane flow rates enhanced graphene quality, achieving monolayer films with an I2D/IG ratio of 2.76 for a 10-minute growth. By optimizing growth conditions, the graphene film properties were improved. These findings highlight the importance of annealing temperature and cyclohexane flow rates in controlling graphene film quality on Cu foils, providing valuable insights for graphene synthesis in various applications.
Sit-to-stand ability with dual task among older adults with mild cognitive impairment
Authors:   , Chimsuwan Perayut 
Published: September 2023

Sit to stand (STS) is the basic mobility related to the quality of life. Older adults with mild cognitive impairment (MCI) have a movement pattern change in motor function. Moreover, the dual task can interfere with cognitive ability, leading to reduced motor performance. However, there was a lack of evidence of movement time, kinematics, and kinetics while performing STS tasks. This study aims to evaluate the STS ability in older adults with and without MCI while performing in single and dual conditions. This study was cross-sectional. Seventy older adults (35 older adults with MCI and 35 controls) participated in this study. All participants were asked to perform STS in both conditions (STS alone and STS with carrying the tray of glass that fill the water) with preferred movement patterns. The chair height was set for individuals as lower leg length. The variables consisted of movement time, kinematics variables (trunk, pelvis, hip, knee, and ankle joint), peak vertical ground reaction force, and kinetics variables (hip extension, knee extension, plantar flexion moment) were collected. The study found the highest values of trunk flexion angles were found in older adults with MCI during STS with carrying a tray of glass filled with water. Moreover, the STS with dual tasks took a greater movement time than single conditions in both groups. Also, both groups found a difference in the dominant and non-dominant leg. The dominant leg has a greater knee flexion angle and ankles plantar flexion angles than the non-dominant leg. For the kinetics variables, older adults without MCI have a greater hip extension moment and plantar flexion moment during STS alone than STS with carrying the tray of glass that fill the water.