14 articles in this issue
Michael Obiora Dioha
Energy security, environmental degradation, and climate change have become global topics of discussion. In response to these issues, the federal government of Nigeria has developed the National Renewable Energy and Energy Efficiency Policy (NREEEP). In th... see more
Panadda Yotsomnuk, Wanwisa Skolpap
This research aimed to determine the influence of process parameters on yields of biofuel production by hydrocracking of waste virgin coconut oil using HZSM-5 zeolite catalyst and to determine statistical relationship of yields of biofuels with the parame... see more
Chayanin Hankansurijat, Octavian Andrei
The rapid adoption of the GNSS (Global Navigation Satellite System) technology in our modern daily life brings the opportunity to investigate its applicability to areas beyond positioning, navigation and timing, such as meteorology. Due to its high accura... see more
Nattakarn Kansai, Nichakorn Chaisuwan, Nuta Supakata
The purpose of this research was to study the physical, environmental, and economic characteristics of carbonized briquettes from rain tree (Samanea saman) residues and coffee ground/tea waste with cassava starch (10% wt.). There were five treatments in t... see more
Pornpicha Pitaktamrong, Jeerun Kingkaew, Suravoot Yooyongwech, Suriyan Cha-um, Muenduen Phisalaphong
A novel formulation consisting of arbuscular mycorrhizal fungi (AMF) spores mixed with sterilized organic fertilizer (AMF-F) encapsulated by an insoluble calcium alginate film was developed to enhance AMF efficacy and stability. The hardness of the pellet... see more
Budi Triyono, Pandji Prawisudha, Mardiyati Mardiyati, Ari Darmawan Pasek
Municipal solid waste (MSW) is a complex problem in major cities in Indonesia that has not been resolved. MSW is currently only collected and disposed to final landfill. On the other hand, national energy security is also an issue to be solved. Utilizatio... see more
Pavisorn Chuenchum, Nattapong Pattanapong, Pongsak Suttinon, Piyatida Ruangrassamee
Thailand currently ranks third among the most water-intensive countries in the world. The percentage shares of water demand in the country’s agriculture, manufacturing, and service sectors, which are major economic sectors, are 75%, 3%, and 5%, respective... see more
Noppadon Sakulsom, Wipawee Tharmmaphornphilas
This paper studies a two-level inventory system with one warehouse and n retailers under seasonal demand. All locations apply periodic review base-stock policy with echelon stock concept. The objective is to determine the inventory policy with... see more
Piya Chotickai, Sitthinon Kaewsawang
In the study, the performance and structural behaviors of door-type modular steel scaffolds with different degrees of initial geometrical imperfections were evaluated through experimental and analytical investigations. Two one-story and nine two-story mod... see more
Jirapong Kasivitamnuay, Pairod Singhatanadgid
The fracture assessment of a cracked component can provide a technical support for an effective maintenance and a prevention of catastrophic accident. The present study applies the reference stress method to extend the J-integral solution from the finite ... see more
Edoardo Copertaro, Paolo Chiariotti, Alvaro Antonio Estupinan Donoso, Nicola Paone, Bernhard Peters, Gian Marco Revel
Thermochemical phenomena involved in cement kilns are still not well understood because of their complexity, besides technical difficulties in achieving direct measurements of critical process variables. This article addresses the problem of their compreh... see more
Warapoj Meethom, Nitidetch Koohathongsumrit
The objective of this study was to develop a decision support system (DSS) to select the optimal road freight transportation route. This DSS is a proactive road freight transportation routing system which employs the standard criteria from the road freigh... see more
Pongtep Weerapong, Ubonrat Numnaphol
Assistive devices born of indigenous inventiveness possess great potential for systematic refinement through the use of modern design technologies. This paper presents a product development process that began with the selection of suitable folk-designed d... see more
Porpin Pungetmongkol
Nano-gap sensor is the next generation of single molecule analysis that consumes less resources, costs, times and spaces. The ultimate goal of this technology is rendering the ability to determine any living genetic code in several seconds using a portabl... see more