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3rd International Conference on Natural and Environmental Sciences 2019, ICONES 2019

作者： Gunawati Noor, N. Sebayang, K. Setiawan, A. Doctoral Program in Physics Faculty of Mathmatics and Natural Sciences Universitas Sumatera Utara Padang Bulan Medan20155 Indonesia Department of Physics Faculty of Mathmatics and Natural Sciences Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Mechanical Engineering Department Faculty of Engineering Universitas Malikussaleh Bukit Indah Lhokseumawe24352 Indonesia

This investigation aims to study heat transfer rates and temperature changes within a 5 litter cold box enveloped with water-salt solution as phase change material (PCM). The study begins with design and fabrication of a cold box followed by performance tests. Salt sample was collected from a traditional producer in Aceh Besar District, Indonesia. In order to understand the effect of pre-treatment, some of samples were heated at 400 and 600°C for 30 min and compare it with those untreated. Salt solution of each samples was prepared by adding 10 wt.% of salt into water and filled into eight PCM bottles. PCM charging procedure was performed in a refrigerator for 12 h. By placing eight bottle of PCM into the cold-box, thermal energy discharging process was monitored by using four thermocouples. The changes in temperature were recorded for eight hours. In general, result shows that pre-treatment of salt results in a positive effect on thermal energy storage capacity. The best performance of cold storage system was exhibited by PCM made of salt treated at 600 °C where the rate of temperature change within eight hours experiment is 0.055 °C/min. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Phase change materials

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The effect of coal petrology on the capacity of gas methane absorption in coal formation Tanjung Barito in Binuang Region, South Kalimantan

The effect of coal petrology on the capacity of gas methane ...

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International Conference on Earth Science, Mineral, and Energy 2018, ICEMINE 2018

作者： Raharjo, S. Bahagiarti, S. Purwanto, H.S. Rahmad, B. Stud. of Doctoral Program of Geological Engineering UPN Veteran Yogyakarta Indonesia Geological Engineering UPN Veteran Yogyakarta Indonesia

Tanjung Formation is an Eocene - Oligocene coal carrier formation. This formation is stratigraphically situated above the bedrock of Pratersier age. The location of this formation is in Binuang area, South Kalimantan approximately 20 km northwest of Banjarbaru city. The method of research by taking the coal sampling from the bottom seam to the top. Laboratory analysis is done in the form of coal petrography analysis and adsorption test. Coal seam of Tanjung Formation is found with thickness 50 to 600 cm. Megascopy, this coal seam is black, bright (bright-bright banded), black scratch, concoidal shards, and lightweight. Results of developing meceral analysis were vitrinite 22. 6% - 46.4%, inertinite 0.6% - 19.4%. and liptinite 0.4%, mineral matter 0.4% - 0.6%. Based on the reflectance reflection of vitrine (Rv) shows the range between 0.53 - 0.58. The rank of the entire coal is subbituminous B, based on the ASTM classification. Based on the analysis of gas adsorption shows from the lower coal seam to upper with the range 412.94 - 675.27 SCF / Ton. The upper coal seam of the small gas adsorption while at the bottom of coal seam is large gas adsorption. This change in gas adsorption is caused because the lower coal seam contains pyrite minerals, while the top is rarely found in pyrite minerals. The size of pyrite mineral content will affect the adsorption of methane gas. © Published under licence by IOP Publishing Ltd.

关键词： Gas adsorption

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Treatment Algorithm for the Resorption of Calcific Tendinitis Using Extracorporeal Shockwave Therapy: A Data Mining Study

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Orthopaedic Journal of Sports Medicine 2024年第3期12卷 23259671241231609页

作者： Chou, Wen-Yi Cheng, Jai-Hong Lien, Yu-Jui Huang, Tian-Hsiang Ho, Wen-Hsien Chou, Paul Pei-Hsi Doctoral Degree Program in Biomedical Engineering College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Department of Orthopedic Surgery Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan Department of Leisure and Sport Management Cheng Shiu University Kaohsiung Taiwan Center for Shockwave Medicine and Tissue Engineering Department of Medical Research Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan Department of Healthcare Administration and Medical Informatics Kaohsiung Medical University Kaohsiung Taiwan Department of Computer Science and Information Engineering National Penghu University of Science and Technology Penghu Taiwan College of Professional Studies National Pingtung University of Science and Technology Pingtung Taiwan Department of Sports Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Division of Sports Medicine Department of Orthopaedic Surgery Kaohsiung Medical University Hospital Kaohsiung Taiwan Department of Orthopaedics School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Department of Orthopaedic Surgery Kaohsiung Municipal Hsiao-Kang Hospital Kaohsiung Taiwan

Background: Although evidence indicates that extracorporeal shockwave therapy (ESWT) is effective in treating calcifying shoulder tendinitis, incomplete resorption and dissatisfactory results are still reported in many cases. Data mining techniques have been applied in health care in the past decade to predict outcomes of disease and treatment. Purpose: To identify the ideal data mining technique for the prediction of ESWT-induced shoulder calcification resorption and the most accurate algorithm for use in the clinical setting. Study Design: Case-control study. Methods: Patients with painful calcified shoulder tendinitis treated by ESWT were enrolled. Seven clinical factors related to shoulder calcification were adopted as the input attributes: sex, age, side affected, symptom duration, pretreatment Constant-Murley score, and calcification size and type. The 5 data mining techniques assessed were multilayer perceptron (neural network), naïve Bayes, sequential minimal optimization, logistic regression, and the J48 decision tree classifier. Results: A total of 248 patients with calcified shoulder tendinitis were enrolled in this study. Shorter symptom duration yielded the highest gain ratio (0.374), followed by smaller calcification size (0.336) and calcification type (0.253). With the J48 decision tree method, the accuracy of 3 input attributes was 89.5% by 10-fold cross-validation, indicating satisfactory accuracy. A treatment algorithm using the J48 decision tree indicated that a symptom duration of ≤10 months was the most positive indicator of calcification resorption, followed by a calcification size of ≤10.82 mm. Conclusion: The J48 decision tree method demonstrated the highest precision and accuracy in the prediction of shoulder calcification resorption by ESWT. A symptom duration of ≤10 months or calcification size of ≤10.82 mm represented the clinical scenarios most likely to show resorption after ESWT. © The Author(s) 2024.

关键词： calcific tendinitis data mining extracorporeal shockwave therapy J48 decision tree shoulder

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Evaluation on performance of cold storage box enveloped with phase change materials 1

Evaluation on performance of cold storage box enveloped with...

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1st International Seminar on Science and Technology 2018, ISST 2018

作者： Gunawati Dongoran, A.H. Setiawan, A. Department of Physics Faculty of Mathematics and Natural Sciences Syiah Kuala University Darussalam Banda Aceh23111 Indonesia Mechanical Engineering Department Faculty of Engineering Malikussaleh University Bukit Indah Lhokseumawe24352 Indonesia Doctoral Program of Physics Faculty of Mathematics and Natural Sciences University of Sumatera Utara Padang-Bulan Medan20115 Indonesia

Retailing temperature-sensitive-products such as sausages, milk, fishes, poultry, etc. requires extra energy for cooling. It is necessary to develop an-energy-efficient-design of cold storage box to preserve these products during transportation and retailing. This research aims to study the heat flow, temperature distribution and temperature changes within a 5 litter cold box featured by phase change material (PCM). The study begins with design and fabrication of cold box followed by testing and evaluation using computational fluid dynamics (CFD) simulation. As energy storage, there are four models of 300 ml plastic-bottle filled with PCM i.e (i) plain bottles without holes and grooves, (ii) bottles with one hole, (iii) two-holes bottles with curvatures, and (iv) bottles with four holes without curvatures. There are two type of PCM was prepared to observe the temperature changes in the box, 100 % H2O and 10 vol.% NaCl in H2O. Experimental results show that adding 10 vol.% of NaCl enhances the effectiveness of energy discharging by 73% compared with pure water. CFD simulation explains in detail the temperature distribution and heat flow pattern of each PCM bottles types highlighting an important influence of the shape and number of holes on the rate of heat flow. The best performance of cold box is exhibited by 10% NaCl in H2O filled into plain bottle. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Sodium chloride

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Reverse electrodialysis membrane for harvesting salinity gradient energy with and without spacer under natural wetland water

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AIP Conference Proceedings 2023年第1期2932卷

作者： Muthia Elma Dwi Resa Lamandau Siti Fatimah Satria Anugerah Suhendra Aulia Rahma Department of Chemical Engineering Faculty of Engineering Lambung Mangkurat University Jl. A. Yani KM 36 Banjarbaru 70714 Indonesia Materials and Membranes Research Group (M2ReG) Lambung Mangkurat University Jl. A. Yani KM 36 Banjarbaru 70714 Indonesia Environmental Science Doctoral and Postgraduate Program Lambung Mangkurat University Jl. Brigjen H. Hasan Basry Banjarmasin 70123 Indonesia

Salinity gradient energy (SGE) allows two solutions with different salt concentration to mixing and directly into electrical energy by reverse electrodialysis (RED) membrane. High power outputs are forecasted theoretically, but in real practice is still relatively low RED power efficiency. In this work, the spacer shadow effects on both membrane and solution compartment resistances are investigated by employing nylon spacer and without spacer. In addition, this experiment also proposes the power density performance of RED membrane under natural wetland water as low saline solution and variation of high saline solution i.e., artificial brackish water (0.3 wt% NaCl) and artificial seawater (3.5 wt% NaCl). The results indicate that the spacer shadow effect on RED membrane has a correlation with energy output generated. The used of spacer led to an increase in stack resistance and decrease in power density compared to without nylon spacer. This result increases the impact of RED renewable power source and brings it closer to practical implementation, especially for the potential natural wetland water as low saline solution. The power output was computed, obtaining a maximum power density of 0.19 W/m2 with variations without spacers, and 0.14 W/m2 with spacers. Results show that of the cell components directly influences the physicochemical principles governing the RED process and is closely related to the cell output parameters. In turn, it is possible to increase the performance of a RED cell by optimizing operation without spacers to avoid the shadow effect.

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Performance of Anaerobic Baffled Reactor with Three Compartments in Removal of COD of Wastewater of Chilly Sauce 2

Performance of Anaerobic Baffled Reactor with Three Compartm...

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2nd International Conference on Energy, Environmental and Information System, ICENIS 2017

作者： Sumantri, Indro Budiyono, B. Purwanto, P. Doctoral Program of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

The objective in this study is to examine the performance of each compartment of the number of compartments of anaerobic baffled reactor (ABR) to the COD removal of the chilly sauce wastewater. Three-compartments of ABR were conducted in this experiment with the total volume of 60 l. ABR is very suitable for processing waste water with high content of COD. Wastewater conducted in this research is a degradable chilly sauce synthetic and high content of organic compounds. While the COD parameter is the main parameter to indicate the achievement of wastewater treatment plant. Stepwise in the research starting with the preparation of raw materials such as sample preparation of synthetic wastewater and preparation of activated sludge. Variable used is the time digestion in the ABR, sludge volume (50% and 70%), and initial COD concentrations (6000-14000 mg/L). The response is observed up to 7 days process. For a load of organic compounds, the first compartment has high degree of decomposition of organic compounds than 2nd and 3rd, it is shown that the COD removal the second and third compartment increase insignificantly compare the first compartment. As for the different height of the activated sludge indicated that for organic load of of 6170 mg/L up to 14265 mg/L, the first compartment has removal efficiency 79-73%, in the second compartment is 81-75%, 81-77% and third compartment. © 2018 The Authors, published by EDP Sciences.

关键词： Wastewater treatment

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A bibliometric analysis of the uses of the cocoa pod shell

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IOP Conference Series: Materials Science and engineering 2021年第1期1154卷

作者： A D Rincón-Quintero L A Del Portillo-Valdés C G Cárdenas-Arias B E Tarazona-Romero W L Rondón-Romero M A Durán-Sarmiento Design and materials research group (DIMAT) Automation and Control Energy Systems Research Group (GISEAC) Electromechanical engineering Faculty of Natural Sciences and Engineering Technological Units of Santander (UTS) Calle de los estudiantes No 9-82 680005 Bucaramanga Colombia Energy in Building research group (ENEDI) Doctoral Program in Energy Efficiency and Sustainability in Engineering and Architecture Department of Machines and Thermal Engines University of the Basque Country UPV/EHU Engineer Torres Quevedo Plaza 1 48013 Bilbao Spain Doctoral Program in Electronic and Communications Department of Communications Engineering University of the Basque Country UPV/EHU 48013 Bilbao Spain Doctoral Program in Engineering of Materials and Sustainable Processes University of the Basque Country UPV/EHU 48013 Bilbao Spain

The research explores the use of cocoa pod shell (CPS) in rural areas and accessible to the cocoa farmer, applying VOSviewer software. The results show that the production of ethanol or biochar with CPS is not feasible, the first due to its low sugar content and the second, due to the requirement of processes with high temperatures for the extraction of different chemical compounds (i.e activated carbon). On the other hand, obtaining pellets represents a viable energy potential, since the calorific value is competitive with other biomass; Also, through anaerobic digestion under the ideal conditions, it can generate 55% in biogas of the solid matter used. Additionally, the ashes produced in direct combustion or pellets rep-resent an excellent catalyst, which can be used in transesterification, for the generation of biodiesel, used with other residual oils, giving a plus in the efficient use of resources.

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Small intestine submucosa as a growth factor attractor promotes peripheral nerve regeneration by enhancing syndecan-3/glial cell line-derived neurotrophic factor (GDNF) signalling: in vivo study * * Grant sponsor: The Ministry of Science and Technology (Taiwan);Grant number: 111-2320-B-005-009-MY3.

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Biomedical Materials (Bristol) 2023年第5期18卷 055002-055002页

作者： Liu, Chiung-Hui Chu, Yin-Hung Chen, Yin Hsiu Chiang, Yu Hsin Chen, Yu Hsuan Ku, Chung Yao Hsu, Min-Yen Lee, Yi-Ju Yang, Mao-Yi Liao, Wen-Chieh Doctoral Program in Tissue Engineering and Regenerative Medicine College of Medicine National Chung Hsing University No.145 Xingda Rd. South Dist Taichung40227 Taiwan Department of Post-Baccalaureate Medicine College of medicine National Chung Hsing University No.145 Xingda Rd. South Dist. Taichung City40227 Taiwan School of Medicine Chung Shan Medical University Taichung Taiwan. No.110 Sec.1 Jianguo N. Rd Taichung40201 Taiwan Department of Ophthalmology Chung Shan Medical University Hospital Taichung40201 Taiwan Department of Pathology Chung Shan Medical University Hospital Taichung40201 Taiwan Department of Pathology Chung Shan Medical University Taichung40201 Taiwan Department of Orthopedic Surgery Shin Kong Wu Ho-Su Memorial Hospital No. 95 Wen Chang Road Shih Lin District Taipei11101 Taiwan

Peripheral nerve regeneration (PNR) following trauma requires the reconstruction of the extracellular matrix (ECM) and the proper stimulation of growth factors. Decellularised small intestine submucosa (SIS) has been extensively used as an ECM scaffold for tissue repair, but its potential to enhance the effects of exogenous growth factors on PNR is not well understood. In this study, we evaluated the effects of SIS implantation combined with glial cell-derived growth factor (GDNF) treatment on PNR in a rat neurorrhaphy model. We found that both SIS and regenerating nerve tissue expressed syndecan-3 (SDC3), one of major heparan sulphate proteoglycans in nerve tissue, and that SDC3 interacted with GDNF in the regenerating nerve tissue. Importantly, the SIS-GDNF combined treatment enhanced the recovery of neuromuscular function and β3-tubulin-positive axonal outgrowth, indicating an increase in the number of functioning motor axons connecting to the muscle after neurorrhaphy. Our findings suggest that the SIS membrane offers a new microenvironment for neural tissue and promotes neural regeneration based on SDC3-GDNF signalling, providing a potential therapeutic approach for PNR. © 2023 IOP Publishing Ltd.

关键词： Cell culture

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Place attachment in supporting the preservation of religious historical built environment

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IOP Conference Series: Earth and Environmental Science 2021年第1期737卷

作者： P Wahyudie A Antariksa L D Wulandari H Santosa Doctoral Program of Civil Engineering Department Brawijaya University Malang Indonesia Department of Interior Design Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Architecture Brawijaya University Malang Indonesia

The place attachment theory is a scientific part of the relationship between human behavior and built environment study. The built environment study explains the existence of a building and its landscape. The place attachment theory has been used in studying the relationship between human behavior with a religious and historic environment during its development. However, nowadays, this research rarely conducted and often carried out partially. As a consequence, the result analysis is only partially. This study proposed a holistically place attachment to provide a broader discourse in examining the relationship between human behavior and the built environment holistically. Moreover, place attachment theory will be used to preserve the historical religious built environment. In addition, the literature review from the previous studies and discussion methods are essential to support the research. The result shows that there is an opportunity to conduct a study of place attachment theory in supporting the preservation of the historical religious built environment. Thus, the holistic result can be obtained using the place attachment theory, which is the combination of place identity, place dependence, place affect, and place social bonding.

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Correction: Optimized framework for evaluating F3 transgressive segregants in cayenne pepper

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BMC plant biology 2025年第1期25卷 300页

作者： Ifayanti Ridwan Muh Farid Feranita Haring Nuniek Widiayani Ahmad Yani Nirwansyah Amier Muhammad Alfan Ikhlasul Amal Jekvy Hendra Nawab Ali Mekhled M Alenazi Mahmoud F Seleiman Willy Bayuardi Suwarno Muhammad Fuad Anshori Department of Agronomy Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. Agrotechnology Bachelor Study Program Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. Agrotechnology Master Study Program Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. Agricultural Science Doctoral Program Graduate School Hasanuddin University Makassar 90245 Indonesia. Directorate of Horticultural Protection Agricultural Ministry Jakarta 12520 Indonesia. Department of Biosystems and Agricultural Engineering (BAE) College of Agriculture and Natural Resources Michigan State University East Lansing USA. Department of Plant Production College of Food and Agriculture Sciences King Saud University Riyadh Saudi Arabia. Department of Agronomy and Horticulture Faculty of Agriculture IPB University Bogor 11680 Indonesia. Department of Agronomy Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. fuad.anshori@unhas.ac.id.

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