Suranaree Journal of Science and Technology最新文献_第8页

ADSORPTION OF HEAVY METALS USING BIO-CALCIUM CARBONATE DERIVED FROM A GOLDEN APPLE SNAIL (GAS) SHELL 利用从金苹果螺（气）壳中提取的生物碳酸钙吸附重金属

Suranaree Journal of Science and Technology Pub Date : 2023-11-10 DOI: 10.55766/sujst-2023-05-e02716

P. Panpho, Ketkanok Kaewmud, Narathip Vittayakorn, R. Sumang

{"title":"ADSORPTION OF HEAVY METALS USING BIO-CALCIUM CARBONATE DERIVED FROM A GOLDEN APPLE SNAIL (GAS) SHELL","authors":"P. Panpho, Ketkanok Kaewmud, Narathip Vittayakorn, R. Sumang","doi":"10.55766/sujst-2023-05-e02716","DOIUrl":"https://doi.org/10.55766/sujst-2023-05-e02716","url":null,"abstract":"In this research studied the use of calcium carbonate (CaCO3) from golden apple snail (GAS) shells for application as an absorbent material to remove heavy metals in water sources, which replaces commercial calcium carbonate (CaCO3) to reduce production costs and increase waste value. The adsorption of heavy metal contents (such as lead; Pb and Cadmium; Cd), phase formation, and physical characterization of golden apple snail shells were investigated for use as a calcium source in the production of naturally based biomaterials. The samples were calcined between 700°C and 950°C for 5 hr. TG and DTA analysis of samples demonstrated the decomposition of CaCO3 to CaO. The XRD results demonstrated that natural shell powder has a crystal phase of CaCO3 with an aragonite structure. Furthermore, the CaCO3 (calcite phase) was transformed into calcium oxide (CaO) as a component, which showed that the phase transformation depended on the calcination temperature. The adsorption experiments showed good performance at about 99.6%, 99.7%, and 97% removal efficiency in a shorter time for calcined GAS at 700, 800, and 900°C, respectively. This study suggests that the golden apple snail shell could be an effective biomaterial for heavy removal from contaminated water.","PeriodicalId":509211,"journal":{"name":"Suranaree Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139280673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FLUID PROPERTIES OF COMPONENTS FOR DEVELOPMENT OF EUDRAGIT RS-BASED IN SITU-FORMING GEL AND MICROPARTICLE AND THEIR PHASE INVERSIONS 用于开发基于 eudragit rs 的原位形成凝胶和微颗粒的成分的流体特性及其相逆性

Suranaree Journal of Science and Technology Pub Date : 2023-11-10 DOI: 10.55766/sujst-2023-05-e02586

T. Phaechamud, N. Lertsuphotvanit, Ngamsil Kabthong, Tiraniti Chuenbarn, Phonpisith Richkamroph, Kirkphonkij Richkamroph

{"title":"FLUID PROPERTIES OF COMPONENTS FOR DEVELOPMENT OF EUDRAGIT RS-BASED IN SITU-FORMING GEL AND MICROPARTICLE AND THEIR PHASE INVERSIONS","authors":"T. Phaechamud, N. Lertsuphotvanit, Ngamsil Kabthong, Tiraniti Chuenbarn, Phonpisith Richkamroph, Kirkphonkij Richkamroph","doi":"10.55766/sujst-2023-05-e02586","DOIUrl":"https://doi.org/10.55766/sujst-2023-05-e02586","url":null,"abstract":"Solvent exchange-induced in situ-forming gel (isg) and in situ-forming microparticles (ism) have been currently applied as drug delivery approaches for periodontitis treatment. Doxycycline hyclate-loaded Eudragit RS-based isg and ism were prepared in this study. The basic properties such as density, pH, surface/interfacial tension of their solvents including dimethyl sulfoxide (DMSO), N-methyl pyrrolidone (NMP), and 2-pyrrolidone (PYR) in Eudragit RS solution and oils (olive oil and camellia oil) were assessed. This research also tested for apparent viscosity of solvent and drug-free and doxycycline hyclate-loaded ERS-based isg and ism, and their phase transformation rates. Density of PYR was higher than that of DMSO whereas these solvents exhibited the less wettability than oils on glass slide. All fabricated doxycycline hyclate-loaded Eudragit RS-based ism formulations showed good emulsion physical stability with no phase separation for 1 hour. The apparent viscosity of ism was significantly less than that of isg. DMSO-based isg and ism exhibited a significantly less viscosity than that of PYR-based formulations. Rapid phase inversion was evident after isg and ism exposure to agarose gel indicating fast solvent exchange. The loose barrier of camellia oil from its less viscosity facilitated a water diffusion inward Eudragit RS-based ism easier than using viscous olive oil. Solvent exchange-induced doxycycline hyclate-loaded Eudragit RS-based ism using DMSO as the solvent and camellia oil as the continuous phase exhibited various appropriate physicochemical characteristics for applying as drug delivery system for periodontitis treatment.","PeriodicalId":509211,"journal":{"name":"Suranaree Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139281133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LOW-HEAT STERILIZATION SYSTEM ON FRUIT AND VEGETABLE PICKLING LINE PRODUCTION WITH PULSED LIGHTING 使用脉冲照明的果蔬腌制生产线低温灭菌系统

Suranaree Journal of Science and Technology Pub Date : 2023-11-10 DOI: 10.55766/sujst-2023-05-e0151

Bopit Chainok, B. Wasuri

引用次数: 0

THE APPLICATION OF ANALYSIS OF VARIANCE TO DIFFERENT IRON‑BASED SUPERCONDUCTOR CRITICAL TEMPERATURE MODELING 方差分析在不同铁基超导体临界温度建模中的应用

Suranaree Journal of Science and Technology Pub Date : 2023-10-18 DOI: 10.55766/sujst-2023-04-e02609

A. Maksuwan, Arpapong Changjan, P. Pramuanl

引用次数: 0

INFLUENCE OF N2 FLOW RATE ON THE PROPERTIES OF VANADIUM NITRIDE THIN FILMS DEPOSITED BY REACTIVE DC MAGNETRON SPUTTERING 氮气流速对反应直流磁控溅射法沉积的氮化钒薄膜性能的影响

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e02237

J. Prathumsit, W. Phae-Ngam, T. Chaikeeree, N. Mungkung, T. Lertvanithphol, M. Horprathum, Ganatee Gitgeatpong

引用次数: 0

PRODUCTION OF TORREFIED BIOMASS PELLETS FROM WOODY AND AGRICULTURAL RESIDUES (TIChE2021) 利用木质和农业废弃物生产腐熟生物质颗粒（TIChE2021）

Suranaree Journal of Science and Technology Pub Date : 2023-09-29 DOI: 10.55766/sujst-2023-03-e0912

W. Chaiwat, Pimonpan Inthapat, Suwanna Boontanon, Pensiri Prachakittikul, A. Ua, Supachai Jadsadajerm, Nattawut Setkit, Nakorn Worasuwannarak

{"title":"PRODUCTION OF TORREFIED BIOMASS PELLETS FROM WOODY AND AGRICULTURAL RESIDUES (TIChE2021)","authors":"W. Chaiwat, Pimonpan Inthapat, Suwanna Boontanon, Pensiri Prachakittikul, A. Ua, Supachai Jadsadajerm, Nattawut Setkit, Nakorn Worasuwannarak","doi":"10.55766/sujst-2023-03-e0912","DOIUrl":"https://doi.org/10.55766/sujst-2023-03-e0912","url":null,"abstract":"Two different combined process sequences of biomass pretreatment between pelletization after torrefaction (PAT) and pelletization before torrefaction (PBT) were comparatively investigated to produce torrefied biomass pellets (TBP) from woody biomasses, e.g. Leucaena (LC) and rubberwood (RW), and agricultural residues, e.g. rice straw (RS) and sugarcane leaves (SCL). In this study, each sample was thermally treated at 260-300°C for 5 min during torrefaction process. It was found that both woody biomasses and agricultural residues had mass yield lower than 63wt%, while the bulk density of TBPs were improved higher than 400kg/m3. For equilibrium moisture content (EMC) analysis, TBPs via PBT method had lower EMC than raw pellet after being kept at 30°C for 12 days. For the thermochemical properties, the TBPs had higher FC, %C, and HHVs than raw pellets in all biomasses and increased with torrefaction temperature. When comparing the TBPs between PAT and PBT torrefied pellets, the HHVs of PBT torrefied pellets at 300°C were achieved highest at 27 MJ/kg for SCL sample, leading to lower H/C and O/C ratio closely to that of lignite. In addition, the combustion performance index (Sn) of PAT and PBT torrefied pellets was lower than raw pellets, showing a similar property as coal and lignite. Briefly, this study suggests using PBT pretreatment process to produce high quality solid fuel, particularly for agricultural residues such as SCL for a potential substitute of currently used coal.","PeriodicalId":509211,"journal":{"name":"Suranaree Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139334419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PRIORITIZING PERFORMANCE EVALUATION FACTORS OF EVENT-BASED INFORMATION SYSTEMS USING INTERPRETIVE STRUCTURAL MODELING 利用解释性结构模型确定基于事件的信息系统性能评估因素的优先次序

Suranaree Journal of Science and Technology Pub Date : 2023-09-29 DOI: 10.55766/sujst-2023-03-e01014

Mangesh Joshi

引用次数: 0

COMPARATIVE STUDY OF COASTAL CHANGE ALONG THE ANDAMAN SEA COAST AND THE GULF OF THAILAND COAST 安达曼海沿岸和泰国湾沿岸海岸变化比较研究

Suranaree Journal of Science and Technology Pub Date : 2023-09-29 DOI: 10.55766/sujst-2023-03-e01072

Namporn Pituchana, C. Chonglakmani, A. Wannakomol

{"title":"COMPARATIVE STUDY OF COASTAL CHANGE ALONG THE ANDAMAN SEA COAST AND THE GULF OF THAILAND COAST","authors":"Namporn Pituchana, C. Chonglakmani, A. Wannakomol","doi":"10.55766/sujst-2023-03-e01072","DOIUrl":"https://doi.org/10.55766/sujst-2023-03-e01072","url":null,"abstract":"The study areas cover the coastline of Songkhla, Nakhon Si Thammarat, and Surat Thani provinces in the Gulf of Thailand and Satun, Trang, and Krabi provinces in the Andaman Sea. The coastal change study employs the GIS, remote sensing technique, and field investigation. The geomorphological map was created using the supervised classification method in ENVI (The Environment for Visualizing Images) program and field investigation. The geomorphological study results indicate that old tidal flat, intertidal flat, subtidal flat, old and young lagoons, marsh, and old and young sandy beaches characterize the Gulf of Thailand coast. The Andaman Sea coast is represented by rocky coast, intertidal flat, and young sandy beach. The comparison of the coastal change shows that the coastal erosion of the Gulf of Thailand is more severe than the Andaman Sea coast. Most of the Gulf of Thailand coast is now used for aquaculture, whereas shrimp ponds sensitive to erosion have replaced the former mangrove coast. Along the Andaman Sea coast, erosion is protected by the remaining mangrove swamp, and it occurs only in the local area during seasonal storms.","PeriodicalId":509211,"journal":{"name":"Suranaree Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139334109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ON THE ENERGY EFFICIENCY OF CLUSTERING ALGORITHMS FOR RELAY ASSISTED DEVICE-TO-DEVICE COMMUNICATION 中继辅助设备间通信聚类算法的能效问题

Suranaree Journal of Science and Technology Pub Date : 2023-09-29 DOI: 10.55766/sujst-2023-03-e0693

Niemah Osman, Ali Toum, Tagwa Muhammed, Bara Muhammed, Alhassan Alebied

{"title":"ON THE ENERGY EFFICIENCY OF CLUSTERING ALGORITHMS FOR RELAY ASSISTED DEVICE-TO-DEVICE COMMUNICATION","authors":"Niemah Osman, Ali Toum, Tagwa Muhammed, Bara Muhammed, Alhassan Alebied","doi":"10.55766/sujst-2023-03-e0693","DOIUrl":"https://doi.org/10.55766/sujst-2023-03-e0693","url":null,"abstract":"The energy efficiency of data transmission in Device-to-Device (D2D) communication extends battery lives necessary for service continuity. One communication method in D2D is clustering where one User Equipment (UE) relays data between cluster members and the base station (NodeB). This paper evaluates the energy efficiency of three D2D clustering algorithms: Round Robin, where the cluster head selection is rotational among cluster members, Minimum Distance, where the UE closest to the NodeB is selected cluster head, and Minimum Remaining Power where the UE with the highest battery level is the cluster head. A simulation is developed considering various scenarios where UEs are at different distances from the NodeB, and either stationary or moving at certain speeds. Results reveal that the Minimum Distance is the most energy efficient algorithm when UEs are nearby the NodeB and moving. It also outperforms other algorithms as long as UEs are on the move; so that selection of cluster head is rotated among cluster members. Results also show that maximum energy savings due to clustering are up to 47.4% compared to traditional LTE.","PeriodicalId":509211,"journal":{"name":"Suranaree Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139334546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A MULTIPORT NON-ISOLATED DC-DC CONVERTER FOR HYBRID ENERGY SOURCES BY USING ANN CONTROLLER 使用 ann 控制器的混合能源多端口非隔离直流-直流转换器

Suranaree Journal of Science and Technology Pub Date : 2023-09-15 DOI: 10.55766/sujst-2023-03-e02350

Ghanta Devadasu, Katukuri Saikiran, S. Muthubalaji

{"title":"A MULTIPORT NON-ISOLATED DC-DC CONVERTER FOR HYBRID ENERGY SOURCES BY USING ANN CONTROLLER","authors":"Ghanta Devadasu, Katukuri Saikiran, S. Muthubalaji","doi":"10.55766/sujst-2023-03-e02350","DOIUrl":"https://doi.org/10.55766/sujst-2023-03-e02350","url":null,"abstract":"The purpose of this paper is to develop a multiport non-isolated DC-DC converter by using an Artificial Neural Network (ANN) based controlling algorithm. In the existing works, various multiport converter and controlling algorithms are developed for improving the power quality and regulating the voltage of hybrid energy storage systems. Still, some of the models are difficult to understand and require an increased component, high power loss, and reduced efficiency. Therefore, the proposed work intends to develop an ANN-based multiport converter, which helps to regulate the voltage according to the desired level properly. Moreover, this converter has many inputs that are connected and operated simultaneously. The hybrid energy sources considered in this work are solar Photovoltaic (PV) cells, wind, and fuel cells. These sources are connected in parallel, and their output is fed to the non-isolated converter as a single input. Since the input sources fluctuate, their output voltage does not maintain a constant value. In order to maintain the constant outputs, an ANN-based controlling algorithm is deployed in this paper, which helps to boost the level of output voltage properly. In addition to that, the Maximum Peak Point Tracking (MPPT) controlling method is utilized to obtain the maximum energy from the input DC source. Then, a rechargeable battery utilizes the backup supply for power generation. During simulation, the whole system is implemented and tested by using the MATLAB/Simulink platform. The obtained results reveal that the ANN-based controlling technique could efficiently reduce the spikes and maintain the constant output at all times.","PeriodicalId":509211,"journal":{"name":"Suranaree Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139339824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0