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Influence Of Precursor Preparation On The Synthesis Of Boron Carbide From Glutinous Rice Flour, Kannigar Dateraksa, Sujarinee Sinchai Jan 2021

Influence Of Precursor Preparation On The Synthesis Of Boron Carbide From Glutinous Rice Flour, Kannigar Dateraksa, Sujarinee Sinchai

Journal of Metals, Materials and Minerals

Boron carbide is a promising candidate for a variety of applications, including blasting nozzles, neutron moderators, and lightweight armor. Using of inexpensive and readily available starting materials which can react with boric acid to form B-O-C bonds, e.g., glutinous rice flour, is one of alternative means to produce high purity boron carbide powder at low temperature. In this study, boric acid and glutinous rice flour, boron and carbon sources, were used for synthesizing B4C powder by the carbothermic reduction. The mole ratios of boric acid to glutinous rice flour ranging from 1:1 to 2.5:1 were formulated and mixed by continuous …

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Effect Of Zinc-Hydroxo Species On The Growth Of One-Dimensional Zno Nanostructures, Nontakoch Siriphongsapak, Somyod Denchitcharoen Jan 2021

Effect Of Zinc-Hydroxo Species On The Growth Of One-Dimensional Zno Nanostructures, Nontakoch Siriphongsapak, Somyod Denchitcharoen

Journal of Metals, Materials and Minerals

One-dimensional ZnO nanostructures were grown on ZnO seed layer by hydrothermal method using zinc nitrate (Zn(NO3)2) and sodium hydroxide (NaOH) as precursors. The concentrations of NaOH and Zn(NO3)2 were varied from 40 mM to 680 mM and kept constant, respectively. Effects of increasing the hydroxide ions on the concentration of zinc-hydroxo species in the solution were studied using thermodynamic simulation software. The simulated results showed that Zn(OH)2 and Zn(OH)3- concentrations tended to decrease but Zn(OH)42- was non-linearly increased when the concentration of NaOH at room temperature was increased. After the growth of ZnO, the samples were characterized by FESEM and …

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Experimental And Numerical Characterization Of Fatigue Crack Propagation In High-Speed Railway Wheel Er8 Steel, Chaichayo Suetrong, Vitoon Uthaisangsuk Jan 2021

Experimental And Numerical Characterization Of Fatigue Crack Propagation In High-Speed Railway Wheel Er8 Steel, Chaichayo Suetrong, Vitoon Uthaisangsuk

Journal of Metals, Materials and Minerals

In this work, characteristics of fatigue crack growth in the Paris regime of the rail wheel steel grade ER8 were investigated. Experimental crack growth tests under different cyclic loads of a compact tension (CT) specimen and corresponding FE simulations were carried out. The extended FE method (XFEM) coupled with damage evolution based on the strain energy release rate or the Paris law was applied to describe the crack propagation mechanism in the tested CT samples. Hereby, the fatigue fracture model parameters were firstly determined from the experimental data. It was found that the predicted crack growth rates agreed well with …

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Effect Of Cladding Of Stellite-6 Filler Wire On The Surface Of Ss316l Alloy Through Cold Metal Arc Transfer Process, Thinesh Babu Thiagarajan, Sengottuvel Ponnusamy Jan 2021

Effect Of Cladding Of Stellite-6 Filler Wire On The Surface Of Ss316l Alloy Through Cold Metal Arc Transfer Process, Thinesh Babu Thiagarajan, Sengottuvel Ponnusamy

Journal of Metals, Materials and Minerals

In this work, Cladding was done on SS316L alloy through the CMT process using Stellite-6 filler wire. 31 experiments were done at different welding conditions as per CCD matrix. The cladding specimens were characterized by macro and micro-study, Vickers microhardness evaluation and corrosion resistance analysis. An optical microscope, SEM-EDAX, and XRD were used to predict the structural characterizations, presence and the distributions of the elements. Based on the study higher voltage & welding speed showed appreciable hardness at the interface & cladding regions. The thickness of the interface was noted at a maximum of 190 μm. The EDS spectra showed …

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Development And Characterization Of Sic Fiber Reinforced B4c Composite, Jitendra Kumar Sonber, Sanjib Majumdar, Vivekanand Kain Jan 2021

Development And Characterization Of Sic Fiber Reinforced B4c Composite, Jitendra Kumar Sonber, Sanjib Majumdar, Vivekanand Kain

Journal of Metals, Materials and Minerals

This study is conducted to investigate the effects of silicon carbide short fiber (SiCf) reinforcement on processing and properties of boron carbide ceramic. Studies have been carried out on the hot pressing, mechanical property measurement, microstructure evolution and oxidation study of SiCf reinforced B4C composite. B4C-SiCf composites have been prepared by hot pressing at 1950℃ with varying SiCf content in the range of 10 vol% to 30 vol%. All the composites are densified to near theoretical density. It is noticed that hardness of composite is decreased and fracture toughness of composite is increased by addition of SiC fiber. Hardness of …

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Facile Purification Of Locally Mined Gypsum And Its Use For Preparing Nano-Hemihydrates, Luqman Ayodeji Adams, Enobong Essien, Taiwo Aiyeloro, Stella Oseyomon, John Makanjuola Jan 2021

Facile Purification Of Locally Mined Gypsum And Its Use For Preparing Nano-Hemihydrates, Luqman Ayodeji Adams, Enobong Essien, Taiwo Aiyeloro, Stella Oseyomon, John Makanjuola

Journal of Metals, Materials and Minerals

Gypsum has a wide range of applications, in interior decorations, building construction, supplements or implants in orthopaedics to mention a few. However, in many developing countries including Nigeria, there is still a large-scale importation despite huge available natural deposits. In this study, a facile method to purify locally-mined gypsum has been explored based on the mineral retrograde solubility in water. The purified gypsum was investigated for its elemental composition in comparison to the crude sample and a commercially obtained medical-grade gypsum using X-ray fluorescence (XRF). The results showed that the purified gypsum contained 94.05% CaSO4 compared with the crude which …

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Efficiency Of 2-Dodecylaminopyridine For The Liquid-Liquid Extraction Of Gold(Iii) From Succinic Acid Medium, Umrao Shep, Rucha Pawar, Balasaheb Arbad Jan 2021

Efficiency Of 2-Dodecylaminopyridine For The Liquid-Liquid Extraction Of Gold(Iii) From Succinic Acid Medium, Umrao Shep, Rucha Pawar, Balasaheb Arbad

Journal of Metals, Materials and Minerals

Extractive recovery of gold(III) from succinic acid solution with high molecular weight amine: 2-dodecylaminopyridine (2-DDAP) as a new extractant in xylene has been investigated. Extraction data indicates that 5 × 10-4 mol⋅L-1 2-DDAP is a very efficient and fast extractant. Gold(III) can be effectively extracted (D = 414.16) with 2-DDAP from 0.04 M succinic acid solution. The equilibrium of gold(III) from aqueous phase of succinic acid with 2-DDAP is achieved within 60 sec. The extraction of gold(III) with 2-DDAP proceed at the interface according to ion pair formation mechanism. The best stripping solution from among the studied ones is the …

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Effect Of Dc Power On The Thickness, Hardness And Adhesion Strength Of Ti-51 At% Ni Coated Ti/Tin, Ishiaka Shaibu Arudi, Esah Hamzah, Muhammad Azizi Mat Yajid, Bushroa Abdul Razak Jan 2021

Effect Of Dc Power On The Thickness, Hardness And Adhesion Strength Of Ti-51 At% Ni Coated Ti/Tin, Ishiaka Shaibu Arudi, Esah Hamzah, Muhammad Azizi Mat Yajid, Bushroa Abdul Razak

Journal of Metals, Materials and Minerals

The coating of Ti/TiN was successfully deposited on Ti-51 at% Ni substrates by using direct current (DC) magnetron sputtering technique and the effect of different sputtering power on the thickness, surface hardness and adhesion strength of the coatings were studied. The microstructural characterization was carried out using scanning electron microscope (SEM), energy-dispersive X-ray (EDX) and X-ray diffractometer (XRD). The coating thicknesses were detected and measured using SEM. The surface hardness test was performed using microhardness tester, and the adhesion strength was carried out by scratch testing. The results showed that the TiN crystallites growth orientation, thickness, surface hardness and adhesion …

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Developments Of Biodegradable Polymer Based On Polylactic Acid (Pla) With Natural Color Extracts For Packaging Film Applications, Worraphol Nansu, Passarawan Chaiwut, Sukunya Ross, Gareth Ross, Nungruthai Suphrom, Sararat Mahasaranon Jan 2021

Developments Of Biodegradable Polymer Based On Polylactic Acid (Pla) With Natural Color Extracts For Packaging Film Applications, Worraphol Nansu, Passarawan Chaiwut, Sukunya Ross, Gareth Ross, Nungruthai Suphrom, Sararat Mahasaranon

Journal of Metals, Materials and Minerals

This research was interested in the use of natural colorants to replace hazardous synthetic pigments in the plastic polymer industry. The natural colors were selected from local plants indigenous to southeast Asia, which were Hibiscus sabdariffa roselle calyx (RS) and Caesapinia sappan Linn heartwood (SP). Natural colorant extracts were used as additives in poly(lactic acid ) (PLA). These were manufactured using a twin screws extruder and blow film extruder to obtain biodegradable thin films for use as packaging materials. Biodegradable films were characterized by color index, light barrier properties, water vapor transmission (WVTR), morphology, mechanical and chemical properties. The results …

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Effects Of Delay Time And Curing Temperature On Compressive Strength And Porosity Of Ground Bottom Ash Geopolymer Mortar, Nattapong Makaratat, Sumrerng Rukzon, Prinya Chindaprasirt Jan 2021

Effects Of Delay Time And Curing Temperature On Compressive Strength And Porosity Of Ground Bottom Ash Geopolymer Mortar, Nattapong Makaratat, Sumrerng Rukzon, Prinya Chindaprasirt

Journal of Metals, Materials and Minerals

This research investigated development of ground bottom ash (GBA) for a new geopolymer material. The compressive strength and porosity of the geopolymer mortar containing GBA were tested. The GBA-based geopolymer mortar mixtures were designed by control liquid to GBA ratio for all tests. Extra water was also used to maintain the workability of geopolymer mortar. The sodium hydroxide (NaOH) concentrations of 10 M and 15 M were used. Furthermore, sodium silicate (Na2SiO3) to sodium hydroxide (NaOH) ratios by mass such as 0.50, 1.50 and 2.50 were also used as alkali activator solutions. Effects of delay time and no-delay time, heat …

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A Review Of Rice Husk Silica As A Heterogeneous Catalyst Support, Izzati Nasir, Nadiah Ameram, Arlina Ali, Siti Roshayu Hassan, Nurul Akmar Che Zaudin, Jamil Mohamed Sapari Jan 2021

A Review Of Rice Husk Silica As A Heterogeneous Catalyst Support, Izzati Nasir, Nadiah Ameram, Arlina Ali, Siti Roshayu Hassan, Nurul Akmar Che Zaudin, Jamil Mohamed Sapari

Journal of Metals, Materials and Minerals

The yield of amorphous silica has less residue of mineral content in rice husk (RH) and a high specific surface area through the simple alkaline extraction process at first, then acid precipitation of RH. At this time, the leaching process using alkali and calcination of RH is the best method to acquire amorphous silica with a high surface area. The different temperatures were used for the calcination of RH and continue with sodium hydroxide (NaOH) treatment by using different concentration. The sample titrated using hydrochloric acid (HCl) to extract silica. Pretreatment with acid leaching for the RH was also conducted …

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Enhanced Mechanical And Thermal Properties Of Fly Ash-Based Geopolymer Composites By Wollastonite Reinforcement, Khanthima Hemra, Takaomi Kobayashi, Pavadee Aungkavattana, Sirithan Jiemsirilers Jan 2021

Enhanced Mechanical And Thermal Properties Of Fly Ash-Based Geopolymer Composites By Wollastonite Reinforcement, Khanthima Hemra, Takaomi Kobayashi, Pavadee Aungkavattana, Sirithan Jiemsirilers

Journal of Metals, Materials and Minerals

The present study investigated the mechanical and thermal properties of geopolymer composite. The geopolymer composite was prepared by mixing fly ash and wollastonite with the alkaline activator, which was 6 M KOH:K2SiO3 in a mass ratio of 1:1 and a solid:liquid mass ratio of 3:2. The compressive strength at 28 days of geopolymer was 33.3 MPa and possessed the highest strength of 38.3 MPa when 30 wt% wollastonite was added. The flexural strength presented differently whereby it increased from 2.1 MPa to 6.8 MPa. It increased remarkably up to 200% with the addition of 50 wt% wollastonite. The geopolymer composites …

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Raman Signal Enhancement Of Low-Cost Metal Sheet Sers With Gold Decoration, Nampueng Pangpaiboon, Kawinphob Phetnam, Sukon Kalasung, Chanunthorn Chananonawathorn, Viyapol Patthanasettakul, Mati Horprathum, Pitak Eiamchai, Noppadon Nuntawong, Saksorn Limwichean Jan 2021

Raman Signal Enhancement Of Low-Cost Metal Sheet Sers With Gold Decoration, Nampueng Pangpaiboon, Kawinphob Phetnam, Sukon Kalasung, Chanunthorn Chananonawathorn, Viyapol Patthanasettakul, Mati Horprathum, Pitak Eiamchai, Noppadon Nuntawong, Saksorn Limwichean

Journal of Metals, Materials and Minerals

Surface Enhance Raman Spectroscopy (SERS) is a sensitive surface creating plasmonic resonance for the Raman scattering. SERS is considered as a powerful technique to enhance the Raman signal, when quantity of sample is limited. Recently, our lab team has discovered a low-cost SERS template fabrication, laser-engraving method, which is suitable with gold nanoparticles decoration. In this work, two different materials, zinc and copper, are used as metal sheet SERS substrate. Gold nanoparticles sputtered with 270 s of sputtering time are used as decorated noble metal. FE-SEM images illustrate the nano-in-microstructure of the engraved metal sheets. The decorated Au nanoparticles are …

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Oxidation Behavior Of Sn-1 Wt% Bi Alloy In Air And Deionized Water At Room Temperature, Tanavut Naravuthichai, Patama Visuttipitukul, Sirichai Leelachao, Tachai Luangvaranunt Jan 2021

Oxidation Behavior Of Sn-1 Wt% Bi Alloy In Air And Deionized Water At Room Temperature, Tanavut Naravuthichai, Patama Visuttipitukul, Sirichai Leelachao, Tachai Luangvaranunt

Journal of Metals, Materials and Minerals

Formation of tin oxides on surface Sn-1 wt% Bi alloy lapping plates causes interactions with protrusions of embedded diamond grits, and reduces the efficiency of the lapping process. The rate and type of oxide formation were investigated to understand the problem. Electrochemical analysis was performed to characterize the oxide film thickness, and x-ray photoelectron spectroscopy was performed to characterize the tin oxide species. Oxidation in air at room temperature reaches a thickness of 23 Å after 72 h. Oxidation in deionized water at room temperature has a faster growth rate, and reaches a thickness of 33 Å after 72 h. …

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Mechanical Performance Of Woven Carbon Reinforced Epoxy Composites With Varied Orientation Angle, Sweety Ashish Agrawal, Someshwar Bhattacharya Jan 2021

Mechanical Performance Of Woven Carbon Reinforced Epoxy Composites With Varied Orientation Angle, Sweety Ashish Agrawal, Someshwar Bhattacharya

Journal of Metals, Materials and Minerals

The mechanical properties of woven carbon fibre reinforced epoxy composites laminated with different orientation angle in stacking sequence were investigated. Woven fabric layers with different linear density carbon tow have been produced on modified rigid rapier sample loom and impregnated with epoxy by hand lay-up technique for composite preparation. Curing of composite was carried out at room temperature for 2 h. Five different laminar composites were prepared with different orientation angles [(0/0/0/0), 0/+30/-30/0, 0/+45/-45/0, 0/+60/-60/0 and 0/+90/-90/0]. The mechanical properties like tensile, flexural, and impact test) were analysed in both longitudinal and transverse directions. Physical properties such as density and …

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Investigation Of Optimum Parameters For Rotary Friction Welding Of Aluminum Round Bars Using Three-Level Factorial Design Methodology, Tanakorn Jantarasricha, Siridech Kunhirunbawon, Montri Wimol Jan 2021

Investigation Of Optimum Parameters For Rotary Friction Welding Of Aluminum Round Bars Using Three-Level Factorial Design Methodology, Tanakorn Jantarasricha, Siridech Kunhirunbawon, Montri Wimol

Journal of Metals, Materials and Minerals

The welding process has been essential to increasing productivity in numerous industries across Thailand. There are several welding processes to choose from, and the welding process to use will be determined by the suitability of the production in that industry. Another important consideration in welding is to keep the mechanical properties of the joint area as close to the parent material workpiece as possible. This research aims to select the optimum parameter for rotary friction welding aluminum round bar AA6063-T5. That is according to the DIN 50125 type B standard test. The optimal condition consists of welding rotational speed, welding …

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Synthesis And Optical Properties Of Forsterite Ceramic Pigments Using Mirror Wastes As A Flux, Niti Yongvanich, Natchaya Lithira, Nitchakarn Nuniead, Wanchalerm Chauyarsa Jan 2021

Synthesis And Optical Properties Of Forsterite Ceramic Pigments Using Mirror Wastes As A Flux, Niti Yongvanich, Natchaya Lithira, Nitchakarn Nuniead, Wanchalerm Chauyarsa

Journal of Metals, Materials and Minerals

Cobalt-doped forsterite ceramic pigments based on the formula (Mg2-2xCo2x)SiO4 (x = 0, 0.05, 0.1, 0.2) were synthesized using mirror wastes as a flux. Addition of this flux enhanced forsterite phase formation at lower temperature by as much as 200℃. The resulting pigment particles were in a micron range which is suitable for use in a ceramic glaze. The host structure (Mg2SiO4) could accommodate cobalt cations up to 20 at%. Investigation on the chemical distribution revealed that no chemical species from the flux reacted with pigment grains. Optical properties were examined by UV-vis spectroscopy and colorimetry. Technical performance of the obtained …

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Attachment And Associational Dimensions In The Architecture Of Historical Building Conversion In Thailand Between 1997 And 2012, Peeraya Boonprasong Jan 2021

Attachment And Associational Dimensions In The Architecture Of Historical Building Conversion In Thailand Between 1997 And 2012, Peeraya Boonprasong

NAKHARA (Journal of Environmental Design and Planning)

The research on The Initial Survey of Evolution of Adaptive Reuse of Historic Buildings in Thailand is aimed at constructing knowledge for the module named Reuse and Rehabilitation of Historic Buildings. This module is part of the curriculum of Bachelor of Architecture, which studies the role of architecture fabricated within historical buildings. In the era between 1997 and 2012 in Thailand, there was a notable transformation from conservation to contemporary conversion. A review of conservation perspectives indicates a combined multi-disciplinary cooperation between architectural design and conservation. To establish issues regarding the knowledge of conversion, a research question is raised: how …

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Chiang Mai City Hall : Western Or Siamese Architecture In Lanna, Piyadech Arkarapotiwong Jan 2021

Chiang Mai City Hall : Western Or Siamese Architecture In Lanna, Piyadech Arkarapotiwong

NAKHARA (Journal of Environmental Design and Planning)

During the reign of King Rama V (1868-1910) to King Rama VI (1910-1925), Chiang Mai City Halls were developed from local Lanna to Siam-Western style.  This study revealed the political reasons that Chiang Mai City Hall (former) was a Western-style building mixed with a local style. At present, this Chiang Mai City Hall is converted into Chiang Mai City Arts & Cultural Center. The Chiang Mai City Hall was once a large-scale City Hall and ranked the status to be the Monthon Payap (Northern region) City Hall. Therefore, it was one of the significant buildings of a whole Lanna. This …

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Globality In Teaching Art And Architectural History : A Case Study Of The Glossary Assignment, Pat Seeumpornroj Jan 2021

Globality In Teaching Art And Architectural History : A Case Study Of The Glossary Assignment, Pat Seeumpornroj

NAKHARA (Journal of Environmental Design and Planning)

In consideration of the research problem associated with the need for globality and inclusive vision in art and architecture history pedagogy, this research proposes an alternative research framework that entails the globality and inclusion of non-Western content in studying and teaching art and architecture history, as well as the use of interpretive-historical research methodology in conducting cross-cultural and comparative studies for a glossary assignment. This research provides a glossary assignment in which students conduct cross-cultural and comparative investigations of Western and non-Western art and architecture. The study approaches, tactics, and themes employed by students to do cross-cultural comparisons are systematically …

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Sustainable Engagement With Indigenous Settlements In Prohibited Areas : Case Study Of Karen Tribe Villagers In The Kaengkrachan Forest Complex, Thailand, Tarnrawee Ngamsiriudom, Terdsak Tachakitkachorn, Monsinee Attavanich, Chalumpon Thawanaphong, Piyathida Saikhun Jan 2021

Sustainable Engagement With Indigenous Settlements In Prohibited Areas : Case Study Of Karen Tribe Villagers In The Kaengkrachan Forest Complex, Thailand, Tarnrawee Ngamsiriudom, Terdsak Tachakitkachorn, Monsinee Attavanich, Chalumpon Thawanaphong, Piyathida Saikhun

NAKHARA (Journal of Environmental Design and Planning)

Cultural Housing Network Project under collaboration by The Department of National Park, Pidthong Foundation and Chulalongkorn University has been initiated as a social engagement to solve conflicts between the Department of National Park and Primitive Karen tribe villagers in this prohibited area. Treatment bamboo for multi-utilizing and pre-establishing of village working group for cultural promotion has been raised as the key success factors, in parallel with trial and error activity for natural and cultural tourism. These were engaged to reconstruct the village pride of their local wisdom and widen up the job opportunity for their next generation, under restricted regulation …

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Nationalism And The Modernisation Of Thai Architectural Education At Chulalongkorn University In The 1920s And 1930s, Chomchon Fusinpaiboon, Thomas Coomans, Pirasri Povatong Jan 2021

Nationalism And The Modernisation Of Thai Architectural Education At Chulalongkorn University In The 1920s And 1930s, Chomchon Fusinpaiboon, Thomas Coomans, Pirasri Povatong

NAKHARA (Journal of Environmental Design and Planning)

This paper examines the modernization of Thai architecture through the establishment of Thailand’s first architecture school, its curriculum, its architecture, and the pivotal role of the first generation of Thai architecture professors, who had been educated in England and France. It demonstrates how the establishment of the Faculty of Architecture, Chulalongkorn University, Bangkok, stemmed from the Siamese government’s growing nationalism that aimed to end foreign domination in both Siam’s construction industry and international diplomacy. The process, however, involved the adoption of a western curriculum — which was considered modern — and adapting it to be more Thai for nationalist purposes. …

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Adaptive Vernacular : A Search For Future Houses In Eastern Region Of Thailand, Tonkao Panin, Tanakarn Mokkhasmita Jan 2021

Adaptive Vernacular : A Search For Future Houses In Eastern Region Of Thailand, Tonkao Panin, Tanakarn Mokkhasmita

NAKHARA (Journal of Environmental Design and Planning)

This study aims to explore ways in which contemporary vernacular houses can be created to be responsive to environmental, socio-cultural, and economic conditions. Within the selected three provinces of Chachoengsao, Prachinburi and Nakhon Nayok, our goal was to propose possible prototypes for contemporary vernacular houses that respond to current requirements while still sustaining their regional characteristics. Current problems and changing housing demands were studied along with input from local people.  From field surveys and focus groups, the research found that neither “traditional” nor “modern” solutions will suffice, so the prototypes need to strike a balance between these models. Outcomes developed …

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Understanding Thai Urban Pedestrian Culture During Noon Break : How Sidewalk Users Experience The Walking Infrastructure In Bangkok, Thailand, Shusak Janpathompong, Akinobu Murakami Jan 2021

Understanding Thai Urban Pedestrian Culture During Noon Break : How Sidewalk Users Experience The Walking Infrastructure In Bangkok, Thailand, Shusak Janpathompong, Akinobu Murakami

NAKHARA (Journal of Environmental Design and Planning)

The noon break or lunch hour in Bangkok’s central business district (CBD) is when pedestrians wander around for various activities and purposes, in addition to having a meal, within a limited time frame. It is the only break from their daily working routines for energy recovery or socializing, which, in turn, increases readiness to continue working in the afternoon. Commercial activities preferred by pedestrians during this break contribute to increased economic activity. Since pedestrian behavior depends on the cultural context, this research aims to understand Thai urban pedestrian culture that benefits the public, both socially and economically, and to investigate …

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Landscape Luminaire Design For Part Of The Conservation Of Chudhadhuj Royal Residence, Sichang Island, Phanchalath Suriyothin Jan 2021

Landscape Luminaire Design For Part Of The Conservation Of Chudhadhuj Royal Residence, Sichang Island, Phanchalath Suriyothin

NAKHARA (Journal of Environmental Design and Planning)

Chudhadhuj Royal Residence is a historically significant place, located on Si Chang island where a vast landscape area covers both coastal and mountainous areas. Its context connects natural landscape and culture which can be termed a cultural landscape in a holistic. The researcher would like to describe the link between the design criteria and the concepts of the cultural heritage conservation and some identities of the place to meet the function of each area in designing luminaires. The objective of this article is to demonstrate the design process of landscape luminaires for walkway. The design of prototype luminaires consists of …

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A Study Of The Principles Of Three Major Sects For Creating Buddhist Sacred Places, Punjaphut Thirathamrongwee, Wonchai Mongkolpradit Jan 2021

A Study Of The Principles Of Three Major Sects For Creating Buddhist Sacred Places, Punjaphut Thirathamrongwee, Wonchai Mongkolpradit

NAKHARA (Journal of Environmental Design and Planning)

This article aims to establish the principles for the creation of Buddhist sacred places based on primary sources of the three major sects, namely, Therav?da, Mah?y?na, and Vajray?na, and studied architecture based on promising secondary sources through case studies. The stated research question is to understand the interaction among Buddhist principles, human activities, and Buddhist architecture in order to develop the criteria for creating Buddhist sacred places in the context of the modern world. The results indicate that criteria should be considered in two aspects.  First, a method is required to characterize the context and environment that promotes the practice …

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Green Infrastructure Development In Urban Areas: Case Studies Of Samutsakhon, Krathumbaen And Banphaeo Municipalities In Samut Sakhon Province, Waralak Khongouan, Putpunnin Khamwachirapithak Jan 2021

Green Infrastructure Development In Urban Areas: Case Studies Of Samutsakhon, Krathumbaen And Banphaeo Municipalities In Samut Sakhon Province, Waralak Khongouan, Putpunnin Khamwachirapithak

NAKHARA (Journal of Environmental Design and Planning)

Though the development of green infrastructure in parks in Samut Sakhon province has been continuously implemented, there are still no research studies that have explicitly demonstrated the parks’ potential, nor any public opinions toward the development of urban green infrastructure in the parks that would be productive for the planning to efficiently improve and provide urban green infrastructure. As a result, this study had the following objectives: 1) To analyze the potential and networks of urban green infrastructure in parks in Samut Sakhon province, 2) To analyze the satisfaction of using the services and requirements of the urban green infrastructure …

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The Structural Analysis Of Virtual Social Capital For Urban Resilience In A Metropolitan Area : The Case Of Tokyo And Bangkok, Kiyomi Kawamoto, Nij Tontisirin, Eric Y. Yamashita Jan 2021

The Structural Analysis Of Virtual Social Capital For Urban Resilience In A Metropolitan Area : The Case Of Tokyo And Bangkok, Kiyomi Kawamoto, Nij Tontisirin, Eric Y. Yamashita

NAKHARA (Journal of Environmental Design and Planning)

This study clarified the structure in which virtual social capital (SC) affects the quality of life (QOL) and promotes urban resilience in a metropolitan area. It has been determined that assistance from neighboring residents and acquaintances is essential for community resilience and is considered one of the critical factors in urban systems' resilience. These social ties among residents are called SC. In today's metropolises, social ties with others are shifting from face-to-face relationships to virtual relationships. In this study, virtual SC is defined as a weak virtual network formed among people through social media, email, telephones, letters, which is less …

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Environmental Kuznets Curve Revisited, With Reference To The Middle East And North Africa (Mena), Patricia Aguado, Jinhwan Oh Jan 2021

Environmental Kuznets Curve Revisited, With Reference To The Middle East And North Africa (Mena), Patricia Aguado, Jinhwan Oh

NAKHARA (Journal of Environmental Design and Planning)

Using an up-to-date panel dataset that covers 88 countries over a 38-year period (1991–2018), this paper revisits the Environmental Kuznets Curve (EKC) to measure environmental degradation (CO2, methane, nitrous Oxide, PM 2.5, HFC, PFC and SF6) in relation to GDP per capita. This study confirms the inverted-U relation for CO2 emissions, with the estimated turning point at $13,233, but also identifies a U relation in the case of PM 2.5. Furthermore, in a regional analysis of both CO2 and PM 2.5, with special reference to the MENA region, it finds gaps between actual CO2 emissions and their fitted values. We …

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The Urban Image Conservation And Development Of Nakhon Si Thammarat’S Old Town Community In Thailand, Wirut Thinnakorn Jan 2021

The Urban Image Conservation And Development Of Nakhon Si Thammarat’S Old Town Community In Thailand, Wirut Thinnakorn

NAKHARA (Journal of Environmental Design and Planning)

Nakhon Si Thammarat Old Town Community dated a thousand years old from four eras of settlement development. The community is located on an ancient beach ridge that stands until the present day. It also has an image of a community that is unique to any city. Today the community is rapidly expanding, so the importance of the old town’s various elements has been diminished. The research objectives are to analyze Nakhon Si Thammarat Old Town Community’s image and landscape and provide suggestions to preserve and develop the community’s image. The methodology is theoretical concepts of the image of the city, …

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