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169 results on '"Maharani, D."'

2. Egg Production Performance of Crossbred Merawang X KUB Chicken

Author

Alfiyanto, A. R., Kunarni, A., Sari, A. P. Z. N. L., Saraswati, Y. V., Sasongko, H., Wibowo, M. H., Maharani, D., Ma, Wanshu, Series Editor, Sumantyo, Josaphat Tetuko Sri, editor, Pulungan, Nur Ainun Harlin Jennie, editor, Miyahara, Taira, editor, Cahyono, Ari, editor, and Prasetya, Angga, editor

Published
2023
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3. Body Size Performance of F1 Murung Panggang x KUB Chicken

Author

Kantaqwa, Adislam C., Sari, A. P. Z. N. L., Saraswati, Y. V., Sasongko, H., Wibowo, M. H., Maharani, D., Ma, Wanshu, Series Editor, Sumantyo, Josaphat Tetuko Sri, editor, Pulungan, Nur Ainun Harlin Jennie, editor, Miyahara, Taira, editor, Cahyono, Ari, editor, and Prasetya, Angga, editor

Published
2023
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13. Radioactivity measurement on industrial fly ash samples in Bandung using gamma Spectrometry and alpha-beta counting system.

Author

Seno, H., Muliawan, D., Rofida, A., Chussetijowati, J., Maharani, D. E. K., Kholifah, A. N., Supriatna, D., and Purnama, D. S.

Subjects
RADIOACTIVITY measurements, FLY ash, SCINTILLATION spectrometry, HAZARDOUS wastes, HEAT of combustion, SPECTROMETRY, RAW materials
Abstract

Coal is a fuel that is often used in industry by converting the kinetic energy of combustion steam. However,this continuous combustion creates one of the problems, namely the resulting combustion residue in the form of fly ash and bottom ash which is still contaminated with its radionuclide. Based on the Government Regulation of the Republic of Indonesia no. 22 of 2021 about the implementation and management of environment and concerning to hazardous waste, that any toxic and hazardous waste is prohibited from being used as a substitute for raw materials, as a substitute for energy sources, as raw materials having a radioactivity value exceeding 1 Bq/g (one Becquerel per gram) for each radionuclide in the uranium and thorium series or 10 Bq/g (ten Becquerel per gram) for potassium. Radioactivity measurements have been carried out on four undisclosed samples of fly ash from several industries in Bandung using a Gamma Spectrometer (HPGe) and four undisclosed samples of fly ash using Alpha-Beta Counting System. The purpose of this measurement is as a preliminary study of the level of radioactivity in fly ash produced from coal burning industry activities in the Bandung area. Based on the results of gamma spectrometry measurements, the radionuclides found were Pb-214, Bi-214, Ra-226, Pb-212, and K-40 with the radioactivity concentration of sample ranged from 19.209 Bq/kg to 292.184 Bq/kg. All of the sample has the activity concentrations below the limit value by the Government Regulation of Republic Indonesia no. 22 of 2021. Result of the measurement of gross alpha is ranging from 0.0101 Bq/g to 0.0344 Bq/g and gross beta is ranging from 0.0506 Bq/g to 0.2398 Bq/g. [ABSTRACT FROM AUTHOR]

Published
2023
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27. Analyzing Pancasila Characters in the Life of the 21st Young Generation

Author

Pandin Mgr and Maharani D

Subjects
History, Linguistics
Abstract

Introduction: Pancasila was born as the ideology of the Indonesian nation, which reflects the values cultural values, ethics, morals, and the spirit of the nation. Pancasila was born as a form of national character, which reflects divinity, nationality, unity, togetherness, and justice. The purpose of this research is to know the practice of Pancasila values ​​in the life of the nation and the state. Especially, the implementation of the life of the younger generation in the 21st century today. Methods: This study is literature research where data is collected using keywords in the database. Literature source search carried out with the help of Boolean operators and using the PICOS format. The results of selecting articles, using PRISMA Flow Diagrams. The search results found 125 articles that match the research theme. After checking for duplication, 82 articles were excluded because of the similarity in the results of the discussion. In the end, there were 43 articles used as a literature source. Results: Based on the analysis of research findings, which are supported by literature sources, it shows that the current values ​​of Pancasila are worrying. This can be seen, where people's behavior has been contaminated by external cultures due to technological sophistication. At present, it can be said that the ethics and morals of society do not reflect the values ​​of Pancasila. Conclusion: In order to re-install the values ​​of Pancasila in people's lives, the participation of all parties is necessary. This is especially so, for today's younger generation. Therefore, it is necessary to develop a model for teaching Pancasila to be carried out by schools and colleges. So that later, it can produce a generation of ethics and morals who love the country.

Published
2021

35. Prospect of Sukabumi natural zeolite for petrochemical industry: Preparation and characterization of natural zeolite.

Author

Barus, Bina R., Dianursanti, and Solikhah, Maharani D.

Subjects
PETROLEUM chemicals industry, MINES & mineral resources, CATALYTIC cracking, POROSITY, ZEOLITE catalysts, NATURAL resources, ZEOLITES
Abstract

Most of process industries, including chemical, petrochemical and oleochemical needed catalysts for processing. Catalyst has an important role to accelerate the reaction process of final product. Zeolite can also have an active role in the conversion of raw material as catalysts providing the required selectivity towards base chemicals. Among the catalysts for hydrocarbon catalytic cracking, ZSM-5 zeolite is the most widely used since its acidity, special pore structure and it has more than five Si/Al ratios. Indonesia has abundant mineral resources used as natural zeolites for some important industries application. The natural zeolites contain some impurities and its normally was activated to open the pore, remove the organic impurities and increase the Si/Al ratio. This research studied the activation of the Sukabumi's zeolite as catalyst candidate for petrochemical purpose compared to the commercial catalyst ZSM-5 with Si/Al ratio of 23. The produced samples were characterized using XRD, FTIR, SEM and EDX, and BET. Both of activated zeolites show an increasing trend in crystallite size, crystallinity degree, Si/Al ratio, and surface area in range of 30-40% compared to the natural zeolite-parent. While the infrared spectrum indicates the 70% similarities to the specific peaks of H-ZSM5. [ABSTRACT FROM AUTHOR]

Published
2021
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