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  1. Artikel Jurnal Teks lengkap

    Biogas QualityImprovement with Chlorella sp. in a Helical Tubular Photobioreactor in LED Light

    Chawaroj Jaisin

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 2 · 2020 · Thai · DOAJ

    The aim of the research is to improve the biogas quality with Chlorella sp. 200 L cultivated in a helical tubular photobioreactor under the two LED light types (red and blue colors) throughout 24 hours. A water flow rate of 20 L/min and the biogas rate of 0.1 L/min, provided 12 hours and alternated…

  2. Artikel Jurnal Teks lengkap

    Diversity of Bacteria in Seawater at Sea Turtle Conservation Center, Sriracha District, Chonburi Province

    Subuntith Nimrat

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 38 No. 6 · 2020 · Thai · DOAJ

    In this study, numbers and genus of total bacteria were investigated monthly in seawater at a Sea Turtle Conservation Center, Sriracha District, Chonburi Province, Thailand, used for marine turtle culture for 5 months. Numbers of totalbacteria in seawater ranged from 5.00 ± 1.73 ´ 104 to 1.52 ±…

  3. Artikel Jurnal Teks lengkap

    Estimation of Suspended Sediment Concentration in Rivers using Sentinel-2 Imagery: A Case Study of Lam Pao Basin

    Siwa Kaewplang

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 4 · 2020 · Thai · DOAJ

    Monitoring and quantifying suspended sediment concentration (SSC) along rivers provides important information for reservoir management. Traditional monitoring based on in-situ sampling and measurement of SSC in rivers is expensive and time-consuming to perform. The objective of this study was to…

  4. Artikel Jurnal Teks lengkap

    Green’s Relations on the Monoid of Linear Cohypersubstitutions of Type τ = (n)

    Kittisak Saengsura

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 3 · 2020 · Thai · DOAJ

    Linear cohypersubstitutions of type τ = (n) are mappings which map the n-ary co-operation symbols to linear coterms of type τ. Every linear cohypersubstitution σ of type τ = (n) induces a mapping ŝ on the set of all linear coterms of type τ. The set of all linear cohypersubstitutions of type τ…

  5. Artikel Jurnal Teks lengkap

    An Information System for a Milk Collection Center at Khok-kho Cooperative, Mahasarakham

    Manakant Intrakamhaeng

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 1 · 2020 · Thai · DOAJ

    Milk collection centers collect raw milk from farmers and measure both its quantity and quality. Both data are used to calculate payments to farmers. Daily operations at the center include quality assessment, i.e. alcohol test, methylene blue test and somatic cell count. Laboratory assessment…

  6. Artikel Jurnal Teks lengkap

    Yeast chaperone Hsp104 and the role in[PSI+ ] prion propagation and elimination

    Jintana Wongwigkarn

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 1 · 2020 · Thai · DOAJ

    Molecular chaperone Hsp104, also known as heat shock protein in yeast Saccharomyces cerevisiae, plays an essential role in thermotorelance response enabling yeast cell survival at high temperature. Hsp104 mediates the misfolding and the aggregation of denatured proteins to refold to their native…

  7. Artikel Jurnal Teks lengkap

    Folk medicine recorded in Palm Leaf Manuscripts of Isan: A case study of skin disorders

    Chinnaphat Chaloemram

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 4 · 2020 · Thai · DOAJ

    This study is qualitative research performed by collecting, examining and analyzing data regarding the use of medicinal plant formulas to treat skin disorders. Data was collected from the Palm Leaf Manuscriptsof Sakon Nakhon Province, which have been translated in 33 copies, together with the use…

  8. Artikel Jurnal Teks lengkap

    Comparison of data mining structure performance for depressive classification if twitter users from their posts on twitter of user behaviors

    Damrongdet Doenribram

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 3 · 2020 · Thai · DOAJ

    In 2018, The World Health Organization (WHO) and Department of Mental Health (DMH), specified that major depressive disorder (MDD) was the second most important disease that it is probably caused by social media usage affecting stress and leading to violence, and depression . This research proposes…

  9. Artikel Jurnal Teks lengkap

    Species diversity of land snails in limestone hills in Loei and Nong Bua Lamphu Provinces

    Chanidaporn Tumpeesuwan

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 2 · 2020 · Thai · DOAJ

    Limestone hills are a popular places that researchers use to study species diversity of land snails. Limestone hills provide not only a source of calcium carbonate that is important for shell formation, but also provides various types of microhabitat for the snails. In this study, eight localities…

  10. Artikel Jurnal Teks lengkap

    Production of Lightweight Expended Clay Aggregate from Water Treatment Sludge and Cassava Sludge

    Panjai Saueprasearsit

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 4 · 2020 · Thai · DOAJ

    This research aimed to study the production of lightweight expanded clay aggregate (LECA) from water treatment sludge and cassava sludge using thermal process. Significant factors were the ratio of water treatment sludge and cassava sludge (100:0, 90:10, and 80:20 by weight), burning temperature…

  11. Artikel Jurnal Teks lengkap

    Comparison of Travelers’ and Experts’ Requirements on the Decision Making of Non-Motorized Transportation Traveling Inside the University Area in Chiang Mai

    Punravee Kongboontiam

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 4 · 2020 · Thai · DOAJ

    This research compared the factors influencing decision making on non-motorized transportation (walking and bicycling) traveling inside the university areas in Chiang Mai from the travelers’ and the experts’ view. The study process was divided into four steps; (1) interviewing the travelers using…

  12. Artikel Jurnal Teks lengkap

    Analysis of Road Accidents on High Way Route 401 between 247km and 277 km

    Siriporn Darnkachatarn

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 1 · 2020 · Thai · DOAJ

    The objectives of this study were to analyze and identify risk points on Highway Road No. 401, Tha Sala Sub-district, Nakhon Si Thammarat Province, starting from Klay Sub-district Km. 247 to Tha Sala Sub-district Km. 277, a total of 30 kilometers. Risk perception of the sample group was also…

  13. Artikel Jurnal Teks lengkap

    Causal Factors Affecting Helmet Use Behavior among Public Health Students of Pibulsongkram Rajabhat University, Phitsanulok Province

    Kukiet Konkaew

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 3 · 2020 · Thai · DOAJ

    The aims of this study were to determine helmet use behavior (HUB) and to explore the causal factors influencing HUB. Four hundred and twenty two public health students of Pibulsongkram Rajabhat University were chosen as the population. The questionnaire with reliability (Cronbach’s alpha…

  14. Artikel Jurnal Teks lengkap

    Satin Bowerbird Optimization Algorithm with Chaos

    Tanachapong Wangkhamhan

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 1 · 2020 · Thai · DOAJ

    The Satin Bowerbird Optimization (SBO) is a recently developed meta-heuristic optimization algorithm which was inspired by the Satin Bowerbirds living in Australia’s rainforests and other mesic habitats. Like other metaheuristic algorithms, the main problem faced by the SBO is that it has been…

  15. Artikel Jurnal Teks lengkap

    Development of a simple light pipe from a Fresnel lens

    Sorawit Sonsaree

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 4 · 2020 · Thai · DOAJ

    This research developed a simple light pipe from using a Fresnel lens as a light source to supply natural light to a light pipe made of a zinc sheet. The objectives of the study were to (1) find the best focal length or focal distance of the Fresnel lens (size 28.5 cm × 28.5 cm), (2) the best range…

  16. Artikel Jurnal Teks lengkap

    Effect of two-mixed cultivars planting system on yield and yield component of sugarcane

    Patcharin Songsri

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 2 · 2020 · Thai · DOAJ

    The objective of this experiment was to investigate the response of the mixed cultivars planting system to its yield and yield components of sugarcane grown under rainfed condition over the dry season. Five sugarcane cultivars consisting of KK3, Kps01-12, KKU99-02, MPT02-458, and UT13 were planted…

  17. Artikel Jurnal Teks lengkap

    Analysis of Drought in Northern Thailand Using Standardized Precipitation Index

    Voraluck Kaingam

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 3 · 2020 · Thai · DOAJ

    This study aims to analyze the characteristics of the spatial and temporal drought in northern Thailand during the years 1980-2017 (38 years), by analyzing the Standardized Precipitation Index (SPI). The data consists of monthly rainfall data from 31 observation stations of the Thai Meteorological…

  18. Artikel Jurnal Teks lengkap

    Effects of vermicompost on growth and yield of baby pak choi

    Benjawan Chutichudet

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 1 · 2020 · Thai · DOAJ

    The popular trend for consuming vegetables that are safe for health has increased leading to the introduction of organic fertilizers in vegetable production, especially vermicompost. The aim of this experiment was to assess the response of vermicompost application of Eudrilus eugeniae at four…

  19. Artikel Jurnal Teks lengkap

    Comparison of the performance of step conditional and fuzzy logic pulse adjustment forpowersharingsystems

    Chawaroj Jaisin

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 2 · 2020 · Thai · DOAJ

    The aim of this research is to develop an algorithm to control a load sharing system. The step pulse adjustment algorithm and the fuzzy logic pulse adjustment algorithm were used to generate the PWM signal for driving MOSFET to switch between two power sources by the PWM signal. The PWM is…

  20. Artikel Jurnal Teks lengkap

    Analysis of Suitable Areas for Shelters and Evacuation Routes: A Case Study of the Flood Areas in Khlong Nathawi Subwatershed, Songkhla Province

    Thidapath Anucharn

    Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, Vol. 39 No. 2 · 2020 · Thai · DOAJ

    This research aimed to analyze suitable areas for shelters and evacuation routes in flood areas of Khlong Nathawi subwatershed, Songkhla Province by using the application of geographic information systems and network analysis. The analysis of suitable areas for evacuation from flood areas consisted…

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