At present, the increase of greenhouse gas has led to anincrease in global temperature. This problem can be solved by extending green areas to reduce the amount of gas. The purposes of this study was to classify a forest area in Mahasarakham University by using Unmanned Aerial Vehicle (UAV) and Sentinel-2 images and to assess the above-ground carbon stock in 2018 using Object...
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 ± 0.09 ´ 106 CFU/ml. Bacteria found in this study were identified as Azotobacter sp...
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 (800, 900, and 1,000 °C), and burning time (30, 60, and 120 min). Various physical...
Earthquake prediction with artificial neural network model (ANN) has never been studied in Thailand before. However, after searching research article from an international database, it has been found that there is a possibility of using the ANN model to predict earthquake in other countries. Therefore, this article reports on the possibility of predicting earthquakes with ANN in...
Examinations are an assessment and evaluation tool at University. They can be performed using different types of input devices to complete them. This study investigated whether using digital input devices affects muscle activation than a traditional input instrument. We monitored the Electromyography (EMG) activity of Trapezius (TRAP), Biceps Brachii (BB), Flexor Digitorum...
This study analyzed the karyotype and idiogram of Taylor’s stream frog (Limnonectes taylori) collected from Chiang Mai Province in Northern Thailand. A mitotic chromosome preparation from bone marrow was obtained by direct method. Chromosomes were stained by conventional staining technique with 20% Giemsa solution in order to examine diploid number, shape and size. The result...
The aim of this work is to introduce the notion of fuzzy weak hyper filters in hyper BE-algebras and investigate some of their properties. This research shows that the set of all fuzzy weak hyper filters of hyper BE-algebras is a distributive complete lattice. Also, the concepts of Noetherian hyper BE-algebras and Artinian hyper BE-algebras are characterized by their fuzzy weak...
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 of semi-structured interviews and focus group discussion form with key informants...
Musculoskeletal disorders of worker in the silk weaving professions have become a significant problem affecting production effectiveness. This study explores the prevalence rate and factors affecting musculoskeletal disorders of 150 members of the silk weaving profession in Chaiyaphum province. The data was collected by using questionnaires applied from the Standardized Nordic...
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 use spectral information provided by remote sensing from Sentinel-2 images in...
This research investigated the effect of roasting on the bioactive compounds of germinated soybean. Content of genistein, daidzein and total phenolics was measured and antioxidant activity estimated. The soybean samples were soaked for 4 hours, then germinated for 19 hours and roasted at 200°C for 6, 7 or 8 minutes. Roasting temperature and air flow rate were constant throughout...
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 of the horizontal shaped tube, and (3) the light pipe was tested actual use with a...
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 the factor ranking technique and the experts using the pairwise comparison technique...
The objectives of this research were to explore stream data and to analyze flood risk areas in Chanthaburi in order to gain useful information for local agencies in Chanthaburi to make plans to deal with such problems. This research focused on the sources or ends of streams, points where streams are linked, and points where streams cut through obstacles. Three areas were...
Plant parasitic fungi are major problem in agriculture that affect yield and quality of agricultural products. In this study, antagonistic effects of Streptomyces sp. and Bacillus sp. were evaluated against plant parasitic fungi Bipolaris oryzae DOAC 1760, Aspergillus flavus TISTR 3366, Phytophthora palmivora DOAC 2072 and Penicillium sp. The abilities of Streptomyces sp. and...
This article presents flooding simulation and flooding alleviation measures of Cha-Uat Municipality, Cha-Uat District, Nakhon Si Thammarat. HEC-HMS and HEC-RAS were applied to determine runoff and simulate flooding events in the study area. The results of the HEC-HMS model’s calibration (2005) and verification (2000) gave correlation coefficients (r) of 0.95 and 0.82...
The objective this research is to study the optimization of the factors between carburizing temperature and time that effect the mechanical properties of the hardened big knives in pack carburizing process. The mechanical properties were hardness and impact values. These were used for comparison with the experimental values and delivered from the big knives forged and hardened by...
This research aimed to study the optimal condition of natural color extraction from the bracts of Bougainvillea glabra and to develop a cosmetic product containing color lake from the red-purple bracts. The dye extraction was optimized for three conditions (solvent concentration, solid-liquid ratio, and extraction time) and analyzed by spectroscopy. The obtained dye was...
Karyotypic and idiogram studies were preformed using male predaceous spear-headed katydid, Palaeoagraecia brunnea (Ingrisch, 1998), and male bluish-green rice grasshopper, Hieroglyphus banian (Fabricius, 1798), collected from Lamphun and Chiang Mai provinces in Northern Thailand . The mitotic chromosomes were directly prepared from gut tissue and male testis tissue by colchicine...
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 under the binary operation ocoh which is defined by σ1 ocohσ2 := 1 o σ2 for all σ1 ,σ2...
Image improvement is an important process for enhancing the quality of facial images under varying light condition in which shadow and light affects the performance of feature extraction and face recognition. This research proposed the development of image normalization for illumination, such as dark light and over light that creates some invisible face area and it is unable to...
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 the depressive classification from posts on twitter of user behaviors and compared...
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 coefficient 0.94) was used as a research instrument. The results showed that 66.4% of all...
The aims of this work were to study bioactive compounds, antioxidant and alpha glucosidase inhibitory activites of Tot Mu Tot Ma (Paederia linearis) in crude extracts of root, stem and leaf. The maceration method was used with ethanol as solvent. Bioactive compounds in the phytochemical screening study, were flavonoid, terpenoid, saponin, steroid and cardiac glycosides. Total...
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 Department (TMD) and gridded rainfall data from the Climatic Research Unit (CRU...