Digital Commons Network^™

It’S Not What We Say But How We Say It : The Use Of Their Linguistic Repertoire By Two Non-Native English-Speaking Teachers In The Efl Classroom In Thailand, Sarah Elizabeth Schefers, Maria-Luz Celaya

PASAA

No abstract provided.

Academic Article : Native Language Support In Enhancing English Learning For Chinese Postgraduate Students : Insights From Online Instruction At A Thai Technical University, Cheng-Chun Tsai

PASAA

No abstract provided.

English Language Teaching In The Modern Globalized World : Thai L2 Learnersʼ Views On Global Englishes, Apaporn Puchpan, Krich Rajprasit

PASAA

No abstract provided.

The Effects Of Applying Intercultural Tasks On Pre-Service Elt Teachersʼ Intercultural Awareness In A Course On English For Intercultural Communication, Nattida Pattaraworathum

PASAA

No abstract provided.

The Influence Of Linguistic And Logical-Mathematical Intelligences On An Efl Reading Comprehension, Silvi Listia Dewi, Misnar Misnar, Burhanuddin Yasin, Faisal Mustafa, Omar Khalifa Burhan

PASAA

No abstract provided.

A Baking Verb List : A Corpus-Based Study Of International Bakery And Pastry Recipes, Woravit Kitjaroenpaiboon, Sirote Pholpuntin, Sukhum Chaleysub, Samniang Fahkrajang, Prissana Fongsrun, Niphatchanok Najpinij, Chanchana Siripanwattana

PASAA

No abstract provided.

Establishing English Science Textbook Word Lists (Estwls) For Thai Efl Secondary Students : A Corpus-Based Approach, Thana Kruawong, Supakorn Phoocharoensil

PASAA

No abstract provided.

Introducing Second Language Assessment, Trung Kien Pham

PASAA

No abstract provided.

Photocatalytic Performance Of Ba₀.₈Ca₀.₂Tio₃ Composite For Norfloxacin Removal In Aqueous Solutions, Raj Mohanty, Swayam Aryam Behera, Asima Subhadarshini, Binita Nanda, P. Ganga Raju Achary

Journal of Metals, Materials and Minerals

This study investigates the degradation of norfloxacin using a Ba0.8Ca0.2TiO3 (BCTO) perovskite composite synthesized via a simple solid-state method. Variety of characterization techniques, including photoluminescence spectra, powder X-Ray Diffraction, UV-Vis Diffuse Reflectance Spectra, FE-SEM and Fourier-Transform Infrared spectra confirm the structural and optical properties of BCTO. Electrical characterization further elucidates its conductive properties. The BCTO composite demonstrates an impressive 87% degradation rate of norfloxacin, attributed to its reduced electron-hole recombination, enhanced light harvestation, and improved charge carrier mobility. Kinetic studies indicate that the degradation process adheres to a pseudo-first-order model, with BCTO outperforming both pure BaTiO3 and conventional photocatalysts. These …

Improving The Mechanical Performance Of 45s5 3d Scaffolds Through The Particles Of Barium Titanate Ceramics, Surirat Yotthuan, Usanee Pantulap, Nuttawan Sawangboon, Ornuma Tungsanguan, Ekarat Meechoowas, Kansiree Kaewmorakot, Nathaporn Uthaichai, Theerachai Bongkarn

Journal of Metals, Materials and Minerals

Bioglass® 45S5 is widely used in bone tissue engineering due to its excellent bioactivity. However, its low mechanical strength remains a major limitation. In this study, 25 wt% barium titanate (BaTiO3; BT) was incorporated into 45S5 scaffolds to improve mechanical performance and modulate bioactivity. The 3D scaffolds were fabricated using the foam replication method and exhibited interconnected porosity, with average pore sizes of 471 ± 94 μm (45S5) and 598 ± 58 μm (45S5/BT25), closely resembling human bone. The addition of BT increased the density and compressive strength of the scaffolds to 2.89 ± 0.18 g∙cm‒3 and 2.0 ± 0.2 …

Synthesis And Characterization Of Silica Nanoparticles From Solar Panel Glass Cullet, Pathomporn Ussawanawachat, Nithiwach Nawaukkaratharnant, Apirat Theerapapvisetpong

Journal of Metals, Materials and Minerals

The rapid growth of solar energy as a renewable resource has led to a significant increase in discarded solar panels. Recycling their glass components, especially fine cullet fragments, remains a major challenge due to impurity levels and processing limitations. This study proposes a sustainable approach to recycle solar panel glass cullet into high-purity silica nanoparticles using alkali fusion followed by acid precipitation. Process conditions including cullet to NaOH ratio, fusion temperature, and surfactant addition were optimized. The highest silica yield of 60.26% was achieved at a 1:1.4 cullet to NaOH ratio and 500℃. Polyethylene glycol (PEG 1000) was used as …

Laser Ablation Behavior And Ablation Threshold Of Entropy-Controlled Perovskite Coatings, Shuo Wang, Junyang Lu, Mengqing Zhang, Jiayi Zheng, Tong Zhang

Journal of Metals, Materials and Minerals

The protection threshold of laser ablation resistant materials lags behind the development of laser power density. Single-functional laser ablation resistant materials can no longer meet the practical needs. High-entropy perovskites with infinite chemical composition, tunable bandgap structure, and efficient thermal management capabilities provide new ideas for developing novel high-reflectivity and low-thermal-conductivity multifunctional laser ablation resistant materials. Herein, leveraging these unique advantages of high-entropy perovskites in optics and thermodynamics, four entropy-controlled perovskite coatings, Ba(Zn1/2Ta1/2)O3 (BZTO), Ba(Zn1/3Ta1/3Nb1/3)O3 (BZTNO), Ba(Zn1/4Ta1/4Nb1/4Ti1/4)O3 (BZTNTO) and Ba(Zn1/5Ta1/5Nb1/5Ti1/5Zr1/5)O3 (BZTNTZO) are designed. Through time-dependent laser ablation experiments, the optical and thermal properties are comprehensively evaluated. And laser ablation behavior …

Downstreaming Of Natural Materials Huta Ginjang Quartz Sand Doped With Nd2o3 For Laser Medium Application, Juniastel Rajagukguk, Jakrapong Kaewkhao

Journal of Metals, Materials and Minerals

The QSBoBa glasses with chemical formula 10 Quartz sand + (50-x) B2O3 + 10BaO + 30Na2O + xNd2O3 (x = 0, 0.5, 1, 1.5, and 2 mol%) were prepared by a conventional melt-quenching technique. The successfully fabricated glass samples will be analyzed based on their physical, structural, optical and luminescent properties. The XRD and FTIR spectra have been included to observe the complete structural properties. Optical absorption spectra revealed several characteristic transitions, with a prominent hypersensitive transition 4I9/2→4G5/2 at 584 nm, indicating an increasing asymmetry and disorder at higher Nd3+ concentrations. The photoluminescence emission spectra demonstrated strong radiative transitions of …

Crack Development Of Electroplated Niw Alloys And Their Wettability And Tribological Properties, Jidsucha Darayen, Suwat Ploypech, Martin Metzner, Claudia Beatriz Dos Santos, Petch Jearanaisilawong, Yuttanant Boonyongmaneerat

Journal of Metals, Materials and Minerals

This study investigates how sodium tungstate concentration (20–46 wt.%) and current density (40–60 A/dm²) affect the microstructure, wettability, mechanical properties, and tribological behavior of electrodeposited Ni-W coatings. Results show that increasing current density markedly raises crack density (from <100 to >400 cracks/cm²), while tungstate concentration has minimal effect. XRD confirms Ni-W solid solution formation, with higher tungsten content refining grains and increasing hardness—peaking at 900 HV at 50 A/dm² (an 80% rise from 500 HV at 40 A/dm²). However, excessive stress at 60 A/dm² leads to microcracking and hardness plateauing (~650–700 HV). Higher crack density improves wettability (contact angle ~17°), enhancing lubricant …

Upcycled Waste-Derived Triboelectric Nanogenerator For Sustainable Energy Harvesting, Archana Panda, Basanta Kumar Panigrahi, Subhendu Pati, Sunit Gourav Mohanty, Kushal Ruthvik Kaja

Journal of Metals, Materials and Minerals

The proliferation of disposable paper-based materials in laboratories has raised significant environmental concerns due to their rapid discard and accumulation. This study explores the upcycling of commonly discarded laboratory waste, specifically butter paper and polyurethane (PU) foam, into a single-electrode triboelectric nanogenerator (TENG) for mechanical energy harvesting. The fabricated device employs butter paper as the positive triboelectric layer and PU foam as the negative layer, with an aluminium tape electrode. Electrical tests reveal a peak voltage of 21 V and current of 47 nA, reaching a maximum power of 438 nW at 500 MΩ load. The TENG demonstrates stable performance …

The Effects Of Starting Microstructure On The Results Of Double Intercritical Annealing Process Of 0.107%C-2.39%Mn-0.453%Si Dual Phase Steel, Wichayut Chumoung, Nithi Saenarjhan

Journal of Metals, Materials and Minerals

This study investigates and compares the effects of the starting microstructure on the double intercritical annealing (DIA) process on the microstructure and mechanical properties of 0.11%C-2.39%Mn-0.45%Si dual phase steel. The specimens were austenitized, followed by water quenching (WQ) or air cooling (AC), then DIA at 730°C. For the WQ method, high cooling rate results in the formation of a high strength martensitic structure. Conversely, AC method yields a moderate cooling rate, forming a bainitic structure. After single intercritical annealing (SIA), the microstructure transformed into ferrite and martensite. WQ method specimens contain high stress concentration, leading to earlier recrystallization compared to …

Effects Of Thickness On The Performance Of Sno2 Gas Sensors Using Low-Temperature Co-Fired Ceramic, Montri Aiempanakit, Kittiyaporn Singsumphan, Chutima Nakmuk, Cheewita Suwanchawalit, Manatsawee Srirak, Kata Jaruwongrungsee, Anurat Wisitsoraat, Monrudee Liangruksa, Chawarat Siriwong

Journal of Metals, Materials and Minerals

This study develops SnO2-based gas sensors integrated with a low-temperature co-fired ceramic (LTCC) micro hotplate for ethanol detection. SnO2 nanoparticles were synthesized using a simple precipitation method, and sensing layers with varying thicknesses around 0.24 µm, 0.71 µm, and 1.20 µm were applied to evaluate their influence on performance. The results show that the optimal configuration is a 0.71 µm layer, offering high sensitivity, fast response, and efficient recovery. Operating at a low voltage of 3.2 V, the sensors exhibit low power consumption, suitable for portable and battery-operated applications. The gas-sensing mechanism relies on changes in resistance due to interactions …

Atmospheric Corrosion Of Hot Dip Galvanized Structural Steel Exposed To The Tropical Climate Of Thailand, Adithep Bunphot, Pakawat Sancharoen, Somnuk Tangtermsirikul, Taweep Chaisomphob

Journal of Metals, Materials and Minerals

Hot dip galvanized steels were tested in the atmospheric tropical climate environments of Thailand for 12 month from March 2021 to March 2022. Three locations were studied, i.e. a rural area at Saraburi in the central part, an industrial area at Chonburi in the eastern part, and a coastal/urban area at Songkhla in the southern part of Thailand. The thickness loss of the galvanized steel samples was measured by the weight loss method. Types of corrosion products observed on the samples were zincite, wulfingite, hydrozincite, and simonkolleite. All of them were found on the sample at Songkhla. Three of them, …

Lactic Acid-Assisted Complexation For Enhanced Lithium Extraction And Its Application To Spent Libs, Sibananda Sahu, Niharbala Devi

Journal of Metals, Materials and Minerals

A novel approach for complexing lithium with lactic acid to enhance extraction efficiency and its application to spent LIBs was proposed in this study. Key parameters influencing the extraction were systematically examined, including lactic acid concentration, pH of the aqueous phase, concentration of extractant, diluent selection, phase ratio between organic and aqueous phase, and stripping efficiency. Lithium extraction showed a remarkable improvement, rising from 16% to 43%, as the lactic acid concentration enhanced from 0.01 mol∙L‒1 to 1.0 mol∙L‒1. This was achieved using D2EHPA (0.1 mol∙L‒1)  at a maintained pH of 6.5. Maximum lithium extraction of 84.5% was observed at …

Development Of Ceramic Based Novel Materials For Application In Low Temperature Solid Oxide Fuel Cell (Ltsofc) – A Critical Review, Kaliappan Tamilselvan, Arputharaj Samson Nesaraj

Journal of Metals, Materials and Minerals

In the field of renewable energy, fuel cell research has emerged as a promising source of energy for the future. Fuel cells utilize fuels more efficiently compared to other energy generation systems. Solid oxide fuel cell (SOFC) systems are gaining prominence due to their applications in military operations, mobile power supplies, and stationary power generation. Significant research efforts are being made to lower the operating temperature of SOFCs from 1000℃ to approximately 600℃, leading to the development of low-temperature solid oxide fuel cells (LTSOFCs). This is being achieved by selecting alternative electrode and electrolyte materials, particularly ceramics, to enhance their …

The Effect Of Asphalt Emulsion On The Properties Of Fly Ash Based Geopolymers, Natcha Prommityat, Chiravoot Pechyen, Pitak Laoratanakul, Benya Cherdhirunkorn

Journal of Metals, Materials and Minerals

This research aimed to study the effect of asphalt emulsion (AE) on the properties of fly ash based geopolymers. Solid waste materials used for the production of geopolymer were coal fly ash (FA) 70 wt% and bagasse ash (BA) 30 wt%. Alkaline solution used for the geopolymerization reaction was the mixture of 10 M NaOH and Na2Sio3

with the ratio of 1:2. The liquid and solid (L/S) ratios of 0.6, 0.7 and 0.8 were prepared. The AE of 1 wt%, 3 wt% and 5 wt% were added into the raw materials mixtures. Then, the mixed slurry was casted into a …

Antibacterial, Self-Adhesive Guar Gum/Polyvinyl Alcohol/Tannic Acid Conductive Hydrogels For Flexible Strain Sensors, Noppanan Putdon, Somnuk Theerakulpistut, Rawit Jittham, Pornnapa Kasemsiri

Journal of Metals, Materials and Minerals

In this research, a multifunctional strain sensor with antibacterial properties and self-adhesion capabilities was developed using guar gum (GG), polyvinyl alcohol (PVA), and tannic acid (TA). The incorporation of TA into GG-PVA hydrogel-based strain sensors was investigated to evaluate its effects on mechanical and electrical properties, self-adhesion, and antibacterial activities. The anti-bacterial activities against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were enhanced with the increasing content of TA. The adhesive strength was observed in the range of 1.20 ± 0.10 kPa to 5.05 ± 0.23 kPa, and the values tended to increase as TA content increased. The …

Mechanochemical Synthesis Of Ni(Ii)-Tptz Complexes With Co-Ligands: Spectroscopy, Dft, And Biological Studies, Deepak Senapati, Anulipsa Priyadarshini, Debadutta Samal, P. Ramesh Babu, Satyanarayan Sahoo, Narayan Chandra Bera, Raghabendra Samantaray, Jagannath Panda, Rojalin Sahu

Journal of Metals, Materials and Minerals

New mixed-ligand Ni(II) complexes [Ni(tptz)(1,10-phen)] (1), [Ni(tptz)(2-Mimd)2] (2), and [Ni(tptz)Imd)2] (3) were synthesized via a green, solvent-free mechanochemical approach using ball milling. The primary ligand used was 2,4,6-tris(2-pyridyl)-1,3,5-triazine (tptz), with secondary ligands being 1,10-phenanthroline, 2-methyl imidazole, and imidazole, respectively. Structural characterization by IR, UV-Visible, photoluminescence spectroscopy, and powder X-ray diffraction, supported by DFT calculations, revealed a distorted square planar geometry for complex 1 and distorted tetrahedral geometries for complex-2 and complex-3. Notably, bathochromic shifts in the UV-Vis spectra confirm metal-ligand charge transfer transitions and extended π-delocalization. Powder XRD analysis determined average crystallite sizes of 17.86 nm (1), 25 nm (2), …

Liquid-Liquid Extraction Of Nd(Iii) Using [P66614][Cy272] Ionic Liquid, Prasanjit Das, Kali Sanjay, Niharbala Devi

Journal of Metals, Materials and Minerals

This study explores the extraction of Nd(III) from synthetic solutions using the ionic liquid [P66614] [Cy272]. Key extraction parameters, including the effect of phase contact time, initial pH, salting-out agents, extractant concentration, and temperature, were systematically optimized. Results revealed that a phase contact time of 15 min, an initial pH of 2.14, and 0.2 mol∙L‒1 NaCl as a salting-out agent and extractant concentration of 0.015 mol∙L‒1 [P66614][Cy272], achieved maximum extraction efficiency of 99.7%. Thermodynamic analysis confirmed the process is to be exothermic, spontaneous, and entropy-driven, highlighting the strong complexation between Nd(III) and the ionic liquid [P66614][Cy272]. Stripping tests revealed that …

Influence Of Sociocultural Aspects And Home Modification On Fall Risks Mitigation Among The Elderly In Thailand, Sumavalee Chindapol

NAKHARA (Journal of Environmental Design and Planning)

This study investigates the impact of sociocultural dimensions on home modifications aimed at mitigating fall risks among elderly individuals residing in community settings. Personal measurements and questionnaire interviews were conducted across five regions in Thailand. Additionally, fall risk assessments were performed on the households of the elderly participants. These assessments incorporated both personal health factors and environmental risks associated with falls, resulting in quantifiable scores. The factors included health conditions, body size, sociocultural factors such as family conditions, physical-cultural aspects of elevated houses, bathroom and bedroom. The research revealed that these factors are significantly associated with fall risk (ρ <0.01), except body dimensions. Differences in body size among elderly individuals in different regions were significantly related to incidences of fall risk (ρ <0.05 in Chiang Mai female, Khonkaen male, Rangsit female, and Songkhla female). The contribution of this research is that different regions have varying body limitations and living culture. It was concluded that elderly females in Chiang Mai are at the highest risk of falling due to body shrinkage, residing in vernacular houses with hazards, and living alone. Overall, universal design may not be directly applicable for home modification in each region.  Consequently, the study suggested that home modifications alone may not offer a comprehensive solution for mitigating fall risks as sociocultural factors related to living conditions also play a significant role in shaping these outcomes.

Sales Rate Prediction For Condominiums In The Bangkok Metropolitan Region Using Deep Learning : Identification Of Determinants And Model Validation, Kongkoon Tochaiwat, Patcharida Seniwong

NAKHARA (Journal of Environmental Design and Planning)

The sales rate is very important information for condominium design and development processes. However, predicting it accurately requires substantial expertise and experience. This research investigated the use of a Deep Learning model to predict condominium sales rates and explored various determinants that influence sales rates. The research was done by (1) identifying the determinant factors from the literature review, (2) collecting 199 data from market survey reports, (3) creating a Deep Learning model that can predict the sales rate of a condominium by its determinant factors, and (4) verifying the model by checking its coefficient of determination (R2 value). The …

Restoring Tranquility : Tackling Traffic Noise For Enhanced Comfort In Indonesia Kaya Park, Semarang City, Indonesia, David Suwarno Kusweanto, Natania Nysa Pertiwi N. S., Eldisya Martha Jebatu

NAKHARA (Journal of Environmental Design and Planning)

The comfort of a landscape can be seen from the microclimate and traffic noise in the landscape. Traffic noise, including tire and engine noise, is a common disturbance, particularly in cities, and can lead to diseases. Indonesia Kaya Park, located in Mugassari, Semarang City, is an urban park and public space managed by the Djarum Foundation. Despite numerous studies evaluating its accessibility and biophilic elements, the condition of traffic noise nor potential interventions have been considered. The research question aims to understand the traffic noise condition of Indonesia Kaya Park and identify necessary interventions. The study used a mixed methodology, …

Evaluating And Optimizing Acoustical Reverberation Time And Material Cost For Classrooms Using Building Information Modeling (Bim) And Generative Design (Gd) Tools, Chavanont Khosakitchalert, Taki Eddine Seghier

NAKHARA (Journal of Environmental Design and Planning)

Reverberation time (RT) measures how long sound takes to decay in a space, affecting speech intelligibility and sound quality. Calculating RT using Sabine’s formula is time-consuming and error-prone due to manual extraction of room volume and material surface areas. Balancing RT and cost further complicates material selection. This paper automates RT calculation and optimization using Building Information Modeling (BIM) and generative design (GD). Sound absorption coefficients are input into a BIM model’s material properties, and visual programming (VP) extracts room geometries, materials, and absorption coefficients to compute RT and material costs. A multi-objective optimization algorithm in Autodesk GD identifies the …

The Impact Of Home Environmental Hazards On Subjective Health Among Healthy Elderly Adults In Thailand, Arunya Tuicomepee, Kitti-On Sirisuk, Juthatip Wiwattanapantuwong, Somnuke Gulsatitporn, Trirat Jarutach

NAKHARA (Journal of Environmental Design and Planning)

Thailand's aging population includes a growing number of near-centenarians and centenarians living at home. Grounded in Lawton’s Ecological Theory of Aging, this study aimed to examine whether an unsafe home environment (outdoor, indoor, and additional hazards) has an indirect negative effect on subjective health among elderly Thai adults. Participants were 141 elderly (ages 80–112) but healthy adults, most of whom were living in well-maintained, single-story homes. Instruments used in the study included the Self-Rated Health Question, the Social Contact Scale, the Loneliness Question, and the Home Environmental Hazards Checklist. Findings reveal common indoor hazards such …

The Sociopolitical Manifestation Of Built Environment In Rural Thailand : Holistic Development For An Aging Society?, Sirima Thongsawang, Ampa Kaewkumkong

NAKHARA (Journal of Environmental Design and Planning)

Changes in demographic structures in an aging society have diminished farming employment and incomes of old residents of Talat Mai subdistrict, Angthong Province, Thailand. Under decentralization, the local government assumes primary development responsibility in managing the basic needs of citizens. This case study demonstrates how the local government uses the built environment—Wiset Chai Chan Historical Park Royalty Monument —as an instrument for community development to enhance life quality for old residents. This study examines ways in which the park's construction as a built environment are shaped and consequences due to community development as an aging society. Data was gathered by …