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The effect of size and solid content in hydrolysis of sweet potato starch using endogenous beta-amylase enzyme

IOP Conference Series: Materials Science and engineering 2021年第1期1143卷

作者： R Purwadi D Lestari C A Lohoo J L Tirtaadji Food Engineering Study Program Faculty of Industrial Technology Institut Teknologi Bandung Jl. Let. Jend. Purn. Dr. (HC) Mashudi no. 1 Jatinangor Sumedang 45363 Indonesia.

Sweet potato contains significant amount of endogenous amylase enzymes. The endogenous enzymes can be used in maltose production from sweet potatoes to carry out pre-hydrolysis of the starch to some extent, follow by complete hydrolysis using external enzymes. The main objective of the current study is to investigate the effect of particle size and solid to liquid ratio in hydrolysis process of sweet potato starch using endogenous enzymes. The extent of hydrolysis process is measured by dextrose equivalent of the crude maltose solution. Hydrolysis process consists of liquefaction and saccharification process. The liquefaction process is carried out at 71.5°C and pH 6 for 25 minutes while saccharification process is carried out at 53°C and pH 5,5 for 72 hours. Dextrose equivalent is measured using Lane-Eynon method. The results show that the access of enzyme to the potato tubers is the key to hydrolysis process. The smaller size of tubers gives bigger surface area while lower solid-to-liquid ratio increases enzyme mobility but decreases sugar concentration. Base on the results, a simulation shows that the pre-hydrolysis of sweet potatoes using endogenous enzymes can save almost a half of enzymes required for traditional hydrolysis process.

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Measurement model of halal practice readiness among food manufacturing small medium enterprises

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AIP Conference Proceedings 2020年第1期2217卷

作者： Ida Giyanti Anita Indrasari Wahyudi Sutopo Eko Liquiddanu 1Industrial Engineering Study Program Faculty of Engineering Universitas Setia Budi Surakarta 57127 Central Java Indonesia 2Industrial Engineering Department Faculty of Engineering Universitas Sebelas Maret Surakarta 57126 Central Java Indonesia

Halal is currently becoming an important factor when consuming products, especially food products. For food manufacturers, being halal-certified will improve their operational and financial performance. Unfortunately, not every food manufacturers, especially food manufacturing Small Medium Enterprises (SMEs), are ready to apply the halal standard as stated in Halal Assurance System (HAS) document 23000. Therefore, it is required to design an easy-to-use but comprehensive self-assessment model to evaluate the readiness of SMEs in fulfilling HAS 23000. This paper aims to develop a measurement model of halal practice readiness of food manufacturing SMEs. The measurement model was designed based on 11 criteria of HAS 23000. The 11 criteria are grouped into four dimensions, namely technology, human resource, information, and organization. The proposed readiness assessment model covers two aspects, (i) performance, which is obtained from the halal readiness assessment, and (ii) importance of each halal dimensions which is obtained from expert judgment. The performance and importance value then analyzed using Importance-Performance Analysis (IPA). To describe the applicability of the model, the model was then applied to empirically assess the food manufacturing SMEs readiness through a case study. The result showed that the SME is not ready to implement the halal standard. The output from IPA suggests that firstly the SME must concentrate on the dimension of human resource. This measurement instrument can be used by food manufacturing SMEs as a self-assessment tool prior to and during halal practice implementation. Based on the self-assessment, the SME managers can evaluate their strength and weaknesses regarding HAS 23000 implementation in their organization.

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Utilization plastic waste using pyrolysis fixed bed

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IOP Conference Series: Materials Science and engineering 2019年第1期539卷

作者： I B A Swamardika I N S Winaya R S Hartati Study Program of Electrical Engineering Faculty of Engineering University of Udayana Study Program of Mechanical Engineering Faculty of Engineering University of Udayana

This investigative research aims to convert urban non-organic waste fuels such as plastic waste into energy using fixed bed pyrolysis technology. Pyrolysis fixed bed (PFB) is one of the most efficient technologies for converting various types of undegradable solid waste into thermal energy and liquid fuels with high efficiency. The study was conducted on a lab-scale PFB reactor with dimensions of 15 cm and 55 cm in diameter and bed height respectively. The reactor is equipped with a cooling and decomposition system to accommodate liquid and gas products. Reactor temperature variations using an external heater were tested and quartz sands were selected as a bed material to improve the temperature function of the PFB reactor so as the maximum quality and quantity of liquid product were obtained. The fuel properties of the derived oil were tested including their physical properties, calorific value, elemental measurement (CHNOS) analysis. The results of the study showed that the increase in temperature resulted in an increased pyrolysis performance which was indicated by the increased volume and liquid caloric value.

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Villages Status Classification Analysis Involving K-Means Algorithm To Support Kementerian Desa Pembangunan Daerah Tertinggal dan Transmigrasi Work programs

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Journal of Physics: Conference Series 2020年第1期1641卷

作者： Paska Marto Hasugian Harvei Desmon Hutahaean Bosker Sinaga Sriadhi Saranom Silaban Informatics Engineering Study Program STMIK Pelita Nusantara Medan Indonesia Computer Science and Informatics Education Study Program Faculty of Engineering Universitas Negeri Medan Medan 20221 Indonesia Departement of chemistry Universitas Negeri Medan Medan 20221 Indonesia

Data mining is a technique of extracting information that has not been known before in a collection of data in the database. Data mining has been applied in various fields that require extracting information, some of the work that can be generated with data mining is classification, prediction, and data grouping. In this study, an analysis of village data collection was carried out to explore the potential or knowledge of the data that has been presented with the main objective of producing a grouping of village status. To support clustering or grouping activities the K-means algorithm used with the general process is to carry out the modeling process without supervision and is one of the methods for grouping data with a system partition, with the principle of allocating each data to the centroid or the closest average, work steps conducted in support of this research is to collect data related to the analysis of data grouping and proceed with the calculation process in accordance with the work steps of the K-means algorithm, the amount of data used as a test of 303 villages scattered in the old Padang regency. The results of calculations by displaying a new group of Cluster 0 is occupied by 120 villages, cluster 1 with a total data of 123 villages, Cluster 2 with a total of 6 villages, cluster 3 with a total of 33 villages while cluster 4 with a total of 21.

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Application of K-Medoids Cluster Result with Particle Swarm Optimization (PSO) in Toddler Measles Immunization Cases

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Journal of Physics: Conference Series 2021年第1期1933卷

作者： Eka Pandu Cynthia Indra Riyana Rahadjeng Erfan Karyadiputra Fauzi Yusa Rahman Agus Perdana Windarto Martalina Limbong Teguh Iman Hermanto E. Rusiadi Y Yarmani Informatics Engineering Study Program Faculty of Science and Technology UIN Sultan Syarif Kasim Riau Indonesia Universitas Bina Sarana Informatika Jakarta Indonesia Universitas Islam Kalimantan Muhammad Arsyad Al Banjari Banjarmasin Indonesia STIKOM Tunas Bangsa Pematangsiantar Indonesia Akademi Keperawatan Surya Nusantara Pematangsiantar Indonesia Informatics Engineering Study Program Sekolah Tinggi Teknologi Wastukancana Indonesia Universitas Pembangunan Panca Budi Medan Indonesia Universitas Bengkulu Bengkulu Indonesia

The objective of the research was to analyze the clustering method by optimizing Particle Swarm Optimization (PSO) in the case of measles immunization for children under the age of 5. The research data source used is the North Sumatra Province Central Bureau of Statistics (https://***/). The data used in 2019 included 33 records with variables BCG, DPT-HB3/DPT-HB/Hib3, CAMPAK (MEASLES + RUBELLA), POLIO 4 and HEPATITIS B. The methods used were k-medoids and PSOs. This method is used to determine the value of the Davies Bouldin Index (DBI) before the cluster value is determined (k). The resulting k values were compared to k-medoids without PSO. The best results of k-medoid and PSO will be tested by classification to see the accuracy value of the cluster formed. The results showed that the optimization of k-medoids and PSO was better with the number of clusters (k = 5) than 0.078. (DBI). The results also show that the accuracy of the cluster formed is 95% with a correlation of 0.98.

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Architecture spatial arrangement of Bajo tribes settlement in Kabalutan Island of Central Sulawesi

Architecture spatial arrangement of Bajo tribes settlement i...

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2017 CITIES International Conference: Multi Perspectives on Peri-Urban Dynamics Towards Sustainable Development

作者： Syam, S. Yudono, A. Wikantari, R. Harisah, A. Laboratory Theory Architecture and Environmental History Behavior Program of Architecture Indonesia City Planning and Design Laboratory PWK Study Program Indonesia Faculty of Engineering Universitas Hasanuddin Makassar Indonesia

Vernacular architecture is a potential phenomenon that capable of generating local theory for settlement arrangement in accordance with the condition of natural environment and local culture which is the development of sustainable architecture. In this research they study the phenomenon of architecture settlement which is focused on spatial layout of Bajo tribe in Kabalutan Island, using phenomenology method. The purpose of this research, to find the concept of spatial layout that underlies the order of Bajo settlements in Kabalutan Island. This research produces a spatial layout based on the concept of ethnic fraternity, integrating with the natural conditions that are adaptations of Bajo people's behaviour. © Published under licence by IOP Publishing Ltd.

关键词： Architecture

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Analysis of Decision Tree and Smooth Support Vector Machine Methods on Data Mining

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Journal of Physics: Conference Series 2019年第1期1255卷

作者： Natalina Br Sitepu Sawaluddin M Zarlis Syahril Efendi Hanna Willa Dhany Informatic Engineering Study Program Magister Faculty of Computer Science and Information Technology Universitas Sumatra Utara Medan - Indonesia

This research is about smooth support vector machine (SSVM) and Decision Tree in data mining. Many researchers conduct and develop methods to improve the accuracy and classification of data on good results. This research was conducted by conducting an experiment on STMIK Neumann Medan student data. In this study, it was concluded that Decision Tree performance is better than SSVM, Decision Tree gets very good results that promise to help find the best students to get scholarships. This study is better than SSVM. The training process has a difference of 11.04% and the testing process is 10.08% with each Accuracy.

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E-Translator Kawi to Bahasa 2

E-Translator Kawi to Bahasa

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2nd International Joint Conference on Advanced engineering and Technology, IJCAET 2017 and International Symposium on Advanced Mechanical and Power engineering, ISAMPE 2017

作者： Sudana, Oka Putra, Darma Sudarma, M. Hartati, Rukmi S. Pradnya Prastika, Ryan Wirdiani, Ayu Study Program of Doctoral Engineering Science Faculty of Engineering Udayana University Kabupaten Badung-Bali80361 Indonesia Information Technology Departement Faculty of Engineering Udayana University Kabupaten Badung-Bali80361 Indonesia Electrical and Computer EngineeringDepartement Faculty of Engineering Udayana University Jalan Raya Bukit Jimbaran Kabupaten Badung-Bali80361 Indonesia

Kawi Language is a kind of language which has developed in Java during the Hindu-Buddhist era in the ancient Indonesian archipelago. As the time passed, Kawi began to come to extinction. To overcome this, preservation of Kawi language can be done by enhancing the understanding of culture through the use of technology. Technology that can be used for cultural preservation is one of NLP based applications such as Kawi Language to Bahasa Translator Application which is developed in this research. The translator application is an application that translates from one language to another. The result of translation of the translator application is a language that is easy to understand by the people or commonly used language. This translator application is developed to processes Kawi Language text into bahasa based on search method which each word inserted. The stemming method used is Bobby Nazief & Mima Adriani Algorithm using Kawi Language rule. The translated Kawi Language text can be a word, sentence or paragraph with the result of the Text in Bahasa as well as words, sentences or paragraphs. © The Authors, published by EDP Sciences, 2018.

关键词： Translation (languages)

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Social design as a strengthening strategy of the revitalization of the sub-communal RISHA Mojo Kampung Kota – Surakarta during the COVID-19 Pandemic

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IOP Conference Series: Earth and Environmental Science 2022年第1期986卷

作者： N.H. Kusumaningdyah P Purwandaru Center of Japanese Studies Institution of Research and Community Service (LPPM). Department of Architecture Faculty Engineering and Urban Rural Design and Conservation Laboratory-URDC Universitas Sebelas Maret Surakarta Central Java Indonesia Center of Japanese Studies Institution of Research and Community Service (LPPM). Design Interior Study Program Universitas Sebelas Maret Surakarta Central Java Indonesia

Kampung kota is a type of Indonesian residential that is occupied by a large portion of urban dwellers. According to Pauline (1993) Kampung kota is still considered to have a social interaction habit as mutual assistance among the residences called gotong royong [1]. Despite the effort to plan the formal residential area, most kampung kota is categorized as slum and squatter areas. There are a lot of improvement programs initiated by the government to create a better kampung kota. One of the programs in Surakarta is located in neighborhood one (RW 1), Pasar Kliwon District. The residents were given temporary living space in kampung sub-communal RISHA Mojo before they were moved into the new area of Kampung Metal in Semanggi sub-district. Kampung Sub-Communal RHISA Mojo in Surakarta is a temporary housing area provided by the government to support the kampung improvement program in the residents' old area. Living in communal housing is not directly being guaranteed with decent hygiene environment. When the COVID-19 pandemic occurred in 2020, the residents were dealing with hygiene issues. Therefore, the goal of this paper is to show how social design at Bangkit Berbarengan Project that initiated by academicians of URDC Laboratory and NGO of ARKOM Solo in Surakarta becomes a strategy to improve the environmental quality in the sub-communal area, especially in the pandemic era. Social design thinking is to keep the human need approach and in formalistic approach of design that concern more about inclusivity (Sommer, 1983)[2]. This paper will discuss the approach of the social design process that applies actor-network as a method of knowledge. The case study of the social design project creates social dynamic assemblies and engages multi-stakeholders. The social design outputs are the local campaign to advocate the resident of the COVID-19 and the public facilities designed by the residents. We used qualitative research method. We investigated the residents' behaviors r

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Analysis of Welding Strength S45C Material in Spot Welding Process with Variations in Welding Press Time and Electrode Diameter

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IOP Conference Series: Materials Science and engineering 2020年第1期1007卷

作者： Sobron M.Lubis Rosehan Styven Erlely Study Program Mechanical Engineering Engineering Faculty Universitas Tarumanagara Jl. Let.Jen S. Parman No.1 Jakarta 11440 Indonesia

Spot welding is one system of connecting to steel materials or other materials that make up sheets. The welding time and electrode diameter are the factors that determine the formation of welding nuggets. This study was conducted to analyze the effect of welding time and electrode diameter on the joint strength of the S45C steel plate with a thickness of 1 mm. The welding process takes place with variations in welding time lasting 1 second, 1.5 seconds, 2 seconds, 2.5 seconds, 3 seconds, and variations in the electrode diameter of 6 mm, 8 mm, 10 mm. The results of welding are then carried out a tensile test to determine the strength of the formed nugget. From the data obtained, an analysis is performed. The highest output voltage analysis result of a 6 mm electrode diameter is 0.92 V with a welding time of 1.5 seconds, 8 mm electrode diameter is 0.9 Volt with 2 seconds welding time and a 10 mm electrode diameter is 0.98 Volt with welding time 1 second. The results of the highest electric power analysis of the 6 mm electrode diameter were 9655.12 Watt with 3 seconds welding time, 8 mm electrode diameter was 9227.66 Watt with 3 seconds welding time, and 10 mm electrode diameter was 9260.64 Watt with 3 seconds welding time. The highest tensile stress analysis results were 20.97 N/mm2 at 6 mm electrode diameter, 21.7825 N/mm2 at 8 mm electrode diameter and 29.555 N mm2 at 10 mm electrode diameter

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