. It is necessary to utilize desalination technology to clear the water available, including seawater, to meet the increasing need for clean water due to population growth. Several desalination methods, such as thermal methods, membranes, freezing g, and ion exchange, continue to be developed but have not overcome some deficiencies. Therefore, new alternative desalination methods with droplet atomization, which utilizes the air entrainment phenomena, are being developed. Research on non-dimensional fluid atomization is the basis for designing this method. The study used brine pumped through a nozzle with a small diameter to become mist or vapor. This study carried out variations of research parameters on the configuration of the experimental apparatus in the form of pressure, the diameter of the nozzle, and the number of nozzles. Quantitative data from experimental results obtained from measurement instruments and qualitative data in videos obtained using a camera are to be processed into quantitative data using image processing. The results showed that pressure affects the characteristics of a full cone-shaped water spray. It was found that the best spray system configuration with two nozzles with a diameter of 0.5 mm in a pressure of 9 bar.
{"title":"Effect of Pressure on Salt Water Spray as Alternative Methods of Desalination Using Droplet Evaporation-Air Entrainment","authors":"Muhamad Agil Fadhel Kurnianto, R. Irwansyah, Leonardo Fabianto, Arya Armadani, Warjito Warjito","doi":"10.14716/ijtech.v14i3.5153","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5153","url":null,"abstract":". It is necessary to utilize desalination technology to clear the water available, including seawater, to meet the increasing need for clean water due to population growth. Several desalination methods, such as thermal methods, membranes, freezing g, and ion exchange, continue to be developed but have not overcome some deficiencies. Therefore, new alternative desalination methods with droplet atomization, which utilizes the air entrainment phenomena, are being developed. Research on non-dimensional fluid atomization is the basis for designing this method. The study used brine pumped through a nozzle with a small diameter to become mist or vapor. This study carried out variations of research parameters on the configuration of the experimental apparatus in the form of pressure, the diameter of the nozzle, and the number of nozzles. Quantitative data from experimental results obtained from measurement instruments and qualitative data in videos obtained using a camera are to be processed into quantitative data using image processing. The results showed that pressure affects the characteristics of a full cone-shaped water spray. It was found that the best spray system configuration with two nozzles with a diameter of 0.5 mm in a pressure of 9 bar.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"11 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80970894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5288
V. Suryanti, T. Kusumaningsih, Diah Safriyani, Indri Sri Cahyani
{"title":"Synthesis and Characterization of Cellulose Ethers from Screw Pine (Pandanus tectorius) Leaves Cellulose as Food Additives","authors":"V. Suryanti, T. Kusumaningsih, Diah Safriyani, Indri Sri Cahyani","doi":"10.14716/ijtech.v14i3.5288","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5288","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"13 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72955215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5088
Yudi Wicaksono, A. S. Nugraha, E. Irawan, Nadifa Nada, Sofyan Dimas Nurhansyah
. Atorvastatin calcium is a potent active pharmaceutical ingredient that reduces blood cholesterol levels. However, oral bioavailability is low because it is difficult to dissolve in water. Therefore, further research to increase the solubility of the drug is needed to improve its bioavailability properties. This research aimed to increase the solubility of atorvastatin calcium through the formation of a multi-component solid. Furthermore, the drug was formed into a multi-component solid with dipicolinic acid as a coformer using the solvent evaporation-quenching method. A powder X-ray diffractometer (PXRD), Fourier transform infrared (FTIR) spectrometer, differential scanning calorimeter (DSC), and scanning electron microscope (SEM) was used to characterize the solid. Also, the shake-flask method was used to analyze the solubility of the solid in distilled water. The results showed that atorvastatin calcium and dipicolinic acid formed a new multi-component solid of cocrystal type. The solubility of the atorvastatin calcium from the multi-component solid was 344.31 ± 37.09 mg/L, which was a significant increase of about 2.7-fold compared to the pure form.
{"title":"A New Multi-Component Solid of Atorvastatin Calcium with a Dipicolinic Acid Coformer for Improving the Water Solubility","authors":"Yudi Wicaksono, A. S. Nugraha, E. Irawan, Nadifa Nada, Sofyan Dimas Nurhansyah","doi":"10.14716/ijtech.v14i3.5088","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5088","url":null,"abstract":". Atorvastatin calcium is a potent active pharmaceutical ingredient that reduces blood cholesterol levels. However, oral bioavailability is low because it is difficult to dissolve in water. Therefore, further research to increase the solubility of the drug is needed to improve its bioavailability properties. This research aimed to increase the solubility of atorvastatin calcium through the formation of a multi-component solid. Furthermore, the drug was formed into a multi-component solid with dipicolinic acid as a coformer using the solvent evaporation-quenching method. A powder X-ray diffractometer (PXRD), Fourier transform infrared (FTIR) spectrometer, differential scanning calorimeter (DSC), and scanning electron microscope (SEM) was used to characterize the solid. Also, the shake-flask method was used to analyze the solubility of the solid in distilled water. The results showed that atorvastatin calcium and dipicolinic acid formed a new multi-component solid of cocrystal type. The solubility of the atorvastatin calcium from the multi-component solid was 344.31 ± 37.09 mg/L, which was a significant increase of about 2.7-fold compared to the pure form.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"2 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88552055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5489
S. Sunarsih, Edi Jadmiko, M. Zaman, A. M. A. Malik, Arifah Ali
. Ship and propeller interaction greatly affect ship maneuvering performance and behavior. In steady ahead operation, the interaction properties remain unchanged due to steady ship-propeller operations. In dynamic operations, such as stopping, the properties vary considerably based on the ship and propeller speed combinations. Past researches and practices use a simplistic assumption of single and constant value resembling steady ahead operation due to the lack of knowledge and data on the properties. Up to very recently, researchers in the field and related areas refer to the one and only work from more than five decades ago. The current research presents an insight to disclose the properties features, efforts, and progressions made in the field to the extent of challenges bottlenecking the development. The work broadens the analysis of the implication and inadequacy of the current circumstance toward appropriateness, accuracy, and validity of the research and related studies in the field.
{"title":"Enhancing A Reliable Ship Performance Evaluation in Dynamic Maneuvering Conditions – A Gap Analysis","authors":"S. Sunarsih, Edi Jadmiko, M. Zaman, A. M. A. Malik, Arifah Ali","doi":"10.14716/ijtech.v14i3.5489","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5489","url":null,"abstract":". Ship and propeller interaction greatly affect ship maneuvering performance and behavior. In steady ahead operation, the interaction properties remain unchanged due to steady ship-propeller operations. In dynamic operations, such as stopping, the properties vary considerably based on the ship and propeller speed combinations. Past researches and practices use a simplistic assumption of single and constant value resembling steady ahead operation due to the lack of knowledge and data on the properties. Up to very recently, researchers in the field and related areas refer to the one and only work from more than five decades ago. The current research presents an insight to disclose the properties features, efforts, and progressions made in the field to the extent of challenges bottlenecking the development. The work broadens the analysis of the implication and inadequacy of the current circumstance toward appropriateness, accuracy, and validity of the research and related studies in the field.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"9 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86813103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5131
Tengku Rachmi Hiadayani, B. Wirjosentono, D. Nasution, T. Tamrin
. Efforts to utilize and improve the value of pulp waste have been done by using primary sludge (still containing cellulose) and fly ash as a filler to produce composite foam polystyrene (PS)- based as sound absorbent. In this study, the composite foam was produced by mixing primary sludge and fly ash with several compositions such as PS, PS/PS-g-MA/primary sludge/fly ash (80/10/10/0), (80/10/7/3), (80/10/5/5), (75/10/10/5), and (75/10/12/3). The composite was characterized based on ISO 11654:1997, mechanical properties, thermal analysis using TGA and DSC, morphology using SEM, crystallinity using XRD, and chemical analysis using FTIR. The results showed that the band at 1600.63 cm -1 was sharper due to a chemical reaction being formed between PS, primary sludge, and fly ash. The XRD analysis showed a new diffraction peak in the 2 = 21-24 o . The morphology analysis showed that primary sludge and fly ash were uniformly dispersed into PS, increasing the mechanical properties and decreasing the melting point of the PS foam composite. The sound-absorbing composite produced had qualified ISO 11654:1997 on the rating level of the sound absorption coefficient on materials for rooms with sound absorption classes D and C with the value of w 0.328-0.793.
。以原浆污泥(仍含纤维素)和粉煤灰为填料，生产复合泡沫聚苯乙烯(PS)基吸声材料，对纸浆废渣的利用和利用价值进行了探索。采用PS、PS/PS-g- ma /初级污泥/粉煤灰(80/10/10/0)、(80/10/7/3)、(80/10/5/5)、(75/10/10/5)、(75/10/12/3)等组合制备复合泡沫材料。采用ISO 11654:1997、力学性能、热分析(TGA和DSC)、形貌分析(SEM)、结晶度分析(XRD)和化学分析(FTIR)对复合材料进行了表征。结果表明，在1600.63 cm -1处，由于PS、原生污泥和粉煤灰之间发生化学反应，波段更加锐利。XRD分析表明，在2号 21-24 o处出现了新的衍射峰。形貌分析表明，初级污泥和粉煤灰均匀分散在PS中，提高了PS泡沫复合材料的力学性能，降低了PS泡沫复合材料的熔点。所生产的吸声复合材料吸声系数达到ISO 11654:1997吸声等级D、C级房间材料吸声系数等级，值为w 0.328-0.793。
{"title":"Preparation and Characterization of Sound-Absorbent Based on Polystyrene Reinforced Primary Sludge and Fly Ash from Pulp Mill","authors":"Tengku Rachmi Hiadayani, B. Wirjosentono, D. Nasution, T. Tamrin","doi":"10.14716/ijtech.v14i3.5131","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5131","url":null,"abstract":". Efforts to utilize and improve the value of pulp waste have been done by using primary sludge (still containing cellulose) and fly ash as a filler to produce composite foam polystyrene (PS)- based as sound absorbent. In this study, the composite foam was produced by mixing primary sludge and fly ash with several compositions such as PS, PS/PS-g-MA/primary sludge/fly ash (80/10/10/0), (80/10/7/3), (80/10/5/5), (75/10/10/5), and (75/10/12/3). The composite was characterized based on ISO 11654:1997, mechanical properties, thermal analysis using TGA and DSC, morphology using SEM, crystallinity using XRD, and chemical analysis using FTIR. The results showed that the band at 1600.63 cm -1 was sharper due to a chemical reaction being formed between PS, primary sludge, and fly ash. The XRD analysis showed a new diffraction peak in the 2 = 21-24 o . The morphology analysis showed that primary sludge and fly ash were uniformly dispersed into PS, increasing the mechanical properties and decreasing the melting point of the PS foam composite. The sound-absorbing composite produced had qualified ISO 11654:1997 on the rating level of the sound absorption coefficient on materials for rooms with sound absorption classes D and C with the value of w 0.328-0.793.","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"29 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76550949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.6465
Y. Whulanza
{"title":"Progressing the Sustainable Mobility: View of Electric Vehicles","authors":"Y. Whulanza","doi":"10.14716/ijtech.v14i3.6465","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.6465","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"84 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81694862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.6287
A. Noorsaman, Dea Amrializzia, Habiburrahman Zulfikri, Reviana Revitasari, A. Isambert
{"title":"Machine Learning Algorithms for Failure Prediction Model and Operational Reliability of Onshore Gas Transmission Pipelines","authors":"A. Noorsaman, Dea Amrializzia, Habiburrahman Zulfikri, Reviana Revitasari, A. Isambert","doi":"10.14716/ijtech.v14i3.6287","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.6287","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"167 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80518957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5116
Z. Zulkarnain, M. Machfud, Marimin Marimin, E. Darmawati, S. Sugiarto
{"title":"Design of Graphic Concept Model for Specialty Coffee Packaging Labels","authors":"Z. Zulkarnain, M. Machfud, Marimin Marimin, E. Darmawati, S. Sugiarto","doi":"10.14716/ijtech.v14i3.5116","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5116","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"8 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91337177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5811
Adnan Q. Ibrahim, R. S. Alturaihi
{"title":"Numerical Investigation for Single-Phase and Two-Phase Flow in Duct Banks with Multi Types of Vortex Generators","authors":"Adnan Q. Ibrahim, R. S. Alturaihi","doi":"10.14716/ijtech.v14i3.5811","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5811","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"264 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75916553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-09DOI: 10.14716/ijtech.v14i3.5417
L. Driouach, B. Zitouni, Zarbane Khalid
{"title":"Proposing a Lean Manufacturing Framework Adapted to Very Small Businesses: Multiple Case Studies","authors":"L. Driouach, B. Zitouni, Zarbane Khalid","doi":"10.14716/ijtech.v14i3.5417","DOIUrl":"https://doi.org/10.14716/ijtech.v14i3.5417","url":null,"abstract":"","PeriodicalId":50285,"journal":{"name":"International Journal of Technology Management","volume":"13 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83450115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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