PSRU Journal of Science and Technology <p>&nbsp; &nbsp; &nbsp; &nbsp; PSRU Journal of Science and Technology is a peer-reviewed journal of Faculty of Science and Technology, Pibulsongkram Rajabhat University. The journal devoted to publish of&nbsp; original research article and review article in science and technology. The journal is indexed in TCI Tier 2.</p> <p>Three issues are published a year (January-April, June-August and September-December).</p> <p>Online ISSN 2672-9741</p> <p>Print ISSN 2465-5112</p> en-US (Asst. Prof. Dr. Rapiphun Janmanee) (Miss Sukanya samutkhet) Mon, 27 Apr 2020 19:33:25 +0700 OJS 60 บทบรรณาธิการ <pre id="tw-target-text" class="tw-data-text tw-text-large tw-ta" data-placeholder="คำแปล">บทบรรณาธิการ</pre> Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 13:42:59 +0700 สารบัญ <p>สารบัญ</p> Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 OCCUPATIONAL EXPOSURE OF TRICHLOROETHYLENE: TOXICITY, CURRENT STANDARDS AND SUGGESTED NEW BIOMARKERS FOR KIDNEY CANCER <p>Trichloroethylene (TCE) is a well-known volatile organic compound. The chemical is widely used as a solvent for degreasing metal or electronic parts in industries. For years, the potential health risk associated with occupational exposure to TCE has been constantly studied. It has been known that the primary routes of TCE exposure are chemical inhalation and dermal absorption. The health effects are related to the period of exposure and the concentration. Short-term exposure to TCE may affect the nervous system, liver, kidneys and immune system, while long-term exposure has been linked to carcinogenic tumors in several target organs such as liver and kidneys. For the occupational exposure standpoint, the regulations and recommendations generated by U.S. federal government agencies were explained in this article. The mechanisms of action when TCE was absorbed into the body were also elaborated in detail. It was found that TCE can be metabolized into two different pathways: oxidation and conjugation. Each pathway has different target organs. For example, the oxidative pathway can mainly affect the liver, whereas the glutathione (GSH) conjugation goes to kidneys. For both acute and chronic effects, dose-response relationships were identified in this article. Thus, the objective of this article is to update the current situation and to review the toxicity of TCE with epidemiology data, especially kidney-related cancer, for better understanding.</p> Worrawit Nakpan Copyright (c) 2020 PSRU Journal of Science and Technology Thu, 19 Dec 2019 00:00:00 +0700 LIGHTING AND HUMAN BEHAVIOR <p>Many researches have been done on the association of lighting and the effect on human. Lighting affect not only physiological condition regarding visual performance and regulation of hormone release in human but also psychological condition regarding human behaviours, mood and communication influenced by different characteristics of lighting such as colour, intensity, wavelengths and position. Many locations; rooms, pathways, buildings, rail tunnels, private and public areas, virtual environment was conducted on different conditions of lighting to explore the relationship between lighting and the effect on human. To arrange and design the environment appropriately lead to improve human performance, safety system and ergonomics issues, it is needed to understand how different characteristics of lighting affect on human.</p> Saruda Jiratkulthana Copyright (c) 2020 PSRU Journal of Science and Technology Thu, 19 Dec 2019 00:00:00 +0700 STAGES OF MICROSPORE DEVELOPMENT IN VARIOUS SIZES OF LILIUM LONGIFLORUM VAR. FORMOLONGO FLOWER BUDS <p>The key problem of Easter lily (<em>Lilium longiflorum</em> var. <em>formolongo</em>) growing in the plots are non-homogenous growth which caused by abiotic factors and led to the effect of floral harvest. This research aimed to study the development stage of the microspores from <em>L. longiflorum</em> var. <em>formolongo</em> that related to the different sizes of flower buds and to determine the sizes of flower buds that contained the tetrad microspores, which further developed to new embryoid. The anthers of the flower buds with 1.00 - 2.10 cm length and the age of 70 - 75 days after planting bulbs were dyed with Acetocarmine 0.002 M concentration then detecting stage of meiosis cell division by using Squash technique. It was found the size of flower buds during 1.90 - 2.10 cm length which contained significantly highest microspores in tetrad stage amount 18.78% at p&lt; 0.05 when compared with other sizes. It was the most appropriate development stage for further research of the pure line improvement from another culture.</p> Samaporn Ruangsanka, Nonthawat Homprae, Jirawat Ruangnet Copyright (c) 2020 PSRU Journal of Science and Technology Fri, 20 Dec 2019 00:00:00 +0700 EFFECTS OF COMPOST FROM HYTHANE PRODUCTION FROM STILLAGE AND BREWER’S YEAST CELLS CO-DIGESTED OF ORGANIC MATERIALS ON GROWTH AND YIELD OF CHAINESE KALE <p>The objective of this research was to study the effects of compost from hythane production from stillage and brewer’s yeast cells co-digested of organic materials on growth and yields of Chinese kale. The experiment design was a Completely randomized design (CRD) of 11 treatments with 15 replications; treatment 1; without fertilizer (control), treatment 2; chemical fertilizer, treatment 3; compost formula 1, treatment 4; compost formula 2, treatment 5; compost formula 3, treatment 6; compost formula 4, treatment 7; compost formula 5, treatment 8; compost formula 6, treatment 9; compost formula 7, treatment 10; compost formula 8 and treatment 11; compost formula 9 at Plant Science Field, Faculty of Food and Agricultural Technology, Phibulsongkram Rajabhat University. The result showed that the chemical fertilizer (treatment 2) could produce highest growth and yield of Chinese kale, as well as, number of leave, leave width, leaf length, plant height and fresh weight. The number of leave were 11.40 leave/plant, leave width were 14.54 cm, Leaf length were 16.52 cm, plant height were 25.14 cm and fresh weight were 112.90 g/plant. The growth and yield of Chinese kale in treatment 9 (Compost formula 7) was second. While, the control treatment gave the lowest growth and yield of Chinese kale.</p> Sureewan Sittijunda, Punnada Tharangsri, Chatchawin Nualsri, Chakkrit Sreela-or Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 SOIL CHARACTERISTICS AND CARBON STORAGES OF THE SOILS DERIVED FROM DIFFERENT SOIL PARENT ROCKS IN MIXED DECIDUOUS FOREST ECOLOGY AT HUAI HONG KHRAI ROYAL DEVELOPMENT STUDY CENTER, CHIANG MAI PROVINCE <p>The study of soil characteristics and carbon storages of the soils derived from different soil parent rocks was carried out in mixed deciduous forest (MDF) ecology at Huai Hong Khrai royal development study center (HHK), Chiang Mai province. The objective is to study the potential of carbon storages in soil which develop from different types of rock. Six soil pits were made in the MDF, and soil composite samples were collected at different depths and characteristics of soil horizon. The samples were collected for physicochemical properties analysis. Four groups of the soil parent rocks were found; sandstone, shale, andesite and limestone. The variation of soils was in the stage of the beginning to high development and soils were classified into Order Inceptisols, Ultisols, and Vertisols. The most storage of carbon at 1 meter depth were andesite followed shale, limestone and sandstone, with 152.73, 115.90, 83.29 and 53.02-81.48 t/ha, respectively. According to the development and restoration of the forest under the royal initiative of His Majesty King Rama the IX, the forest was restored and has the potential to be a service for ecosystem, especially soil carbon storage.</p> Chackapong Chaiwong, Soontorn Khamyong, Niwat Anongrak, Prasit Wangpakapattanawong, Suparb Paramee Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 QUANTITATIVE ANALYSIS OF ANTHRAQUINONE FROM PLANTS BASED ON REVERSED-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY <p>The purpose of the research was study to evaluate the simultaneous quantitation of four anthraquinone compounds, namely anthraquinone, alizarin, chrysophanol and emodin in 8 plants include root of Noni (<em>Morinda citrifolia</em> L.), <em>Cassia fistula</em> L. (pulp, seeds, peel and leaves), <em>Cassia siamea</em> leaves, Rosell seeds and Basil seeds by High Performance Liquid Chromatography. For component separation, the method utilized a C18 column (150×4.6 mm, 3.5-Micron) in reverse phase with isocratic elution using a mobile phase of 0.1% v/v Ortho-phosphoric : Acetonitrile (50 : 50 v/v). Wavelength of 254 nm was used for detection. The results of determine anthraquinone compounds, anthraquinone, alizarin and emodin were found in the Noni roots. Chrysophanol was found in only pulp and seeds of <em>Cassia fistula L</em>. sample. Alizarin and emodin were found in Basil seeds sample and anthraquinone was found in <em>Cassia siamea</em> Britt leaves. The validation of the chromatographic method was performed that the linear calibration curves were obtained over the concentration range of 0.5-10.0 µg/mL for anthraquinone alizarin chrysophanol and emodin with good correlation coefficients (R<sup>2</sup> &gt; 0.9995). The accuracy of the method was reported as the recovery in the range of 75.1-106.8%. However, this method gave satisfactory precision in terms of relative standard deviation (RSD) value in the range 0.2–2.0% (n=7).</p> Ruchira Khoomsab, Kanyarak Kratang Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 MODEL OF TRAFFIC LIGHT CONTROL SYSTEM USING SMART PHONE <p>This research presents a model of traffic light control system via smartphone, which simulated at Ban Khlong intersection, Muang district, Phitsanulok province. The data of this study had been collected in 4 periods of time during weekdays. The amount of traffic density was determined to decide the design of traffic light control system that are appropriate for the time period and increase the efficiency of traffic control. The microcontroller raspberry pi was used as processor. A number display monitor was used to indicate times and closed circuit camera was used to monitor number of vehicles. The designs of traffic light control system using smartphone include 2 systems such as automatic system and semiautomatic system. For the automatic system, the traffic light control system was automatically changed for all 4 ranges. The traffic light control system was controlled by traffic police for the semiautomatic system. The both system model was controlled via a smartphone. The results showed that the comparisons during a normal traffic light control system and the traffic light control system using smartphone in the morning at 05:00 – 11:00 am., the efficiency of the traffic light control system using smartphone was higher than the normal traffic light control system 22.05%. In the afternoon at 11:00 – 17:00 pm., the efficiency of the traffic light control system using smartphone was higher than the normal traffic light control system 30.64%. In the evening at 17:00 – 23:00 pm., the efficiency of the traffic light control system using smartphone was higher than the normal traffic light control system 20.43%. At night during 23:00 – 05:00 am., the efficiency of the traffic light control system using smartphone was higher than the normal traffic light control system 26.88%. Finally, the achievement of traffic light control system using smartphone was higher than the normal traffic light control system 22.05% for daylong. A model of traffic light control system using smartphone could be developed for solving traffic problem in the future.</p> ฺBunyarit wangngon, Korn Thanitlerswong , Sornpichai Gas-osoth, Suwatchana Suksiri Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 FORECASTING MODEL FOR THE AMOUNT OF SPARE PARTS STORAGE IN THE WAREHOUSE USING MACHINE LEARNING TECHNIQUES: CASE STUDY OF A CEMENT PLANT <p>The research aims to construct the forecasting model for the remaining&nbsp;amount of spare parts storage at suitable inventory level to forecast minimum and maximum levels for material inventory management using machine learning techniques. This research collected from a real data of a cement factory in Thailand. The dataset has 7,258 instances. We selected five algorithms for forecasting the data including Random forest, Multi-layer perceptron, K-nearest neighbor, K-star, and Random tree. The results of the comparison performance of algorithms for forecasting the amount of spare parts storage in the warehouse showed that the Random forest algorithm provided the highest root mean square error (RMSE) at 2.040 while the Random tree algorithm provided the similar RMSE at 2.117 for forecasting MAX value (Model MAX). On the other hand, for forecasting MIN value, Random tree algorithm obtained the highest RMSE at 0.803 while the Random forest algorithm showed the RMSE at 0.906. However, in this paper, the Random forest algorithm is selected as a forecasting model of both MIN and MAX values because it has the most appropriate performance value both the results of forecasting on unseen data and RMSE values.</p> Duongduen Ongrungrueng, Suphasiri Thaiwirach , Wanthanee Prachuabsupakij Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 THE QUALITY DETECTION OF CEMENT BAGS BY USING IMAGE PROCESSING WITH CONVOLUTIONAL NEURAL NETWORKS CASE STUDY OF A MANUFACTURE PRODUCTION LINE OF CEMENT BAGS <p>The objective of this research aims to apply a machine learning model to detect and separate the quality of cement paper bags on the production line manufacture process. There are three proposed models to implement including 1) model for checking the unqualified and blurred trademark on cement paper bags, 2) model for checking incomplete letter and trademark on cement paper bags and 3) model for detecting unclear adhesive of the cement paper bag valve. This study has applied a convolutional neural network (CNN) and VGG 16, based on python programming language, to learn the types of an image from cement paper bags. There are three scenarios to consider in this study. The first scenario focuses on a letter and trademark on a cement paper bag, which is blurred and incomplete. The second scenario only pays attention to an incomplete letter and trademark. The third scenario considers unclear adhesive of the cement paper bag valve. The image of cement paper bags on the production line manufacture process was collected and the Python language programming was selected to implement proposed models. The results of this research revealed that the first scenario shows F1-Score 95% for qualified cement paper bags and F1-Score 92% for unqualified cement paper bags, the second scenario shows F1-Score 100%, and the third scenario shows F1-Score 100% for qualified and unqualified cement paper bags, respectively.</p> Watcharachai Kongsiriwattana, Sarunya Sawangsri Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700 ANTIOXIDANT AND ACETYLCHOLINESTERASE INHIBITORY ACTIVITIES OF CRUDE AND FRACTIONATED EXTRACTS FROM TONG TAEK (BALIOSPERMUM SOLANIFOLIUM) LEAVES <p>Tong taek (<em>Baliospermum solanifolium</em> (Burm.)Suresh) is a local herb in a family of Euphorbiaceae that is important to traditional medicine for treatment or relief of some illnesses. A few reports of the correlation between its antioxidant activity and total phenolic contents were reported. Moreover, the study of anti-acetylcholinesterase (AChE) activity has not been reported previously. Therefore, the objective of this research is to study the antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) method, analyze the total phenolic contents, and investigate the AChE inhibitory activity from Tong taek leaves extracts prepared by a maceration method using an increasing polarity of solvents including hexane, ethyl acetate and methanol, respectively. The crude methanolic extract showed the highest antioxidant activity with an IC<sub>50</sub> value of 0.48±0.02 mg/mL and total phenolic contents with a value of 117.82±2.32 mg GAE/g crude extract<em>. </em>For the AChE inhibitory activity testing, it was found that the crude ethyl acetate extract displayed the highest anti-AChE activity with an IC<sub>50</sub> value of 62.47±1.47 µg/mL at the concentration of 2000 µg<em>/</em>mL. Then, the crude extracts exhibiting highest biological activities were further separated as fractions or semi-pure compounds by column chromatography to give four fractions (BSM<sub>1</sub>-BSM<sub>4</sub>) from the crude methanolic extract which were tested for the antioxidant activity. The fraction BSM<sub>2 </sub>and BSM<sub>4</sub> showed the relatively good antioxidant activity with IC<sub>50</sub> values of 1.75±0.02 and 1.89±0.02 mg/mL, respectively. Their total phenolic contents are 72.99±0.04 and 59.43±0.02 mg GAE/g crude extract, respectively. Five fractions (BSEA<sub>1</sub>-BSEA<sub>5</sub>) separated from the crude ethyl acetate extract were evaluated on the anti-AChE activity. It was found that both BSEA<sub>3</sub> and BSEA<sub>5 </sub>fractions displayed their anti-AChE activity higher than other fractions with IC<sub>50</sub> values of 1.19±0.03 and 1.20±0.07 mg/mL, respectively. These results can be used as further information supported for the isolation of bioactive compounds from <em>B. Solanifolium </em>leaves to be developed as a novel drug candidate for treatment of Alzheimer’s disease.</p> Kongdech Savaspun, Damratsamon Surangkul, Anuchit Phanumartwiwath, Pornpat Sam-ang Copyright (c) 2020 PSRU Journal of Science and Technology Mon, 27 Apr 2020 00:00:00 +0700