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All Journal Syntax Literate: Jurnal Ilmiah Indonesia Indo-MathEdu Intellectuals Journal Husnayain Business Review
Huda, Ihsanul
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Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Other

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Stabilitasi Fasa Kalsium Pirofospat Pada Temperatur Tinggi Dengan Penambahan Zirkonia Huda, Ihsanul; Kusumaningrum, Retno; Sukmarani, Galuh; Noviyanto, Alfian
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : CV. Ridwan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1608.726 KB) | DOI: 10.36418/syntax-literate.v5i5.1134

Abstract

Kalsium Pirofospat adalah biomaterial yang sangat baik untuk digunakan sebagai pengganti tulang atau gigi yang rusak ataupun retak. Kalsium Pirofospat bersifat biokompatibel, bioaktif dan memiliki komposisi kimia yang mendekati komposisi pada tulang dan gigi manusia. Namun biomaterial ini memiliki kekurangan yaitu sifat mekanisnya yang rendah apabila digunakan untuk menerima beban yang berat. Peningkatan sifat mekanik kalsium pirofospat dapat dilakukan dengan menambahkan material zirkon. Oleh karena itu, pada penelitian ini dilakukan kajian perubahan fasa kalsium pirofospat dengan penambahan zirkon pada temperatur tinggi. Komposisi zirkonia yang ditambahkan sebesar 5% dan 10% (w/w). Pencampuran kalsium pirofosfat dilakukan menggunakan High Energy Milling (HEM) dengan Ball Powder Ratio (BPR) sebesar 5:1 selama 30 menit. Campuran selanjutnya dipanaskan pada temperatur 1000 selama 60 menit. Hasil karakterisasi menggunakan XRD menunjukan bahwa perlakuan pemanasan dapat mendekomposisi kalsium pirofosfat dan terbentuknya CaZrO3. Pemanasan juga menyebabkan ukuran partikel semakin besar. Hasil SEM menunjukkan ukuran mikrostruktur CPP TA yang semula 590±43nm menjadi CPP TAZ5 1,212±268µm dan CPP TAZ10 1,324±384µm. Sedangkan untuk CPP TB yang semula 455±32nm menjadi CPP TBZ5 1,112±546µm dan CPP TBZ10 1,123±392µm. Kata kunci: Kalsium Pirofospat, Zirkonia, High Energy Milling
Pengembangan Media Video Animasi pada Mata Pelajaran IPAS Kelas IV Sekolah Dasar Huda, Ihsanul; Amilia, Winanda; Anugrah, Septriyan; Rahmayanti, Elsa
Indo-MathEdu Intellectuals Journal Vol. 5 No. 4 (2024): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v5i4.1501

Abstract

Students have difficulty understanding one of the materials in the science and science subject, namely the material on changes in the form of substances. The problem with this material is that students have difficulty understanding changes in substance form and examples of substance form changes. This research aims to produce animation video media for science science subjects in grade IV elementary school that is valid, practical, and effective. The type of research used is research and development (R&D), using the 4-D development model. The validity test was carried out by 3 validators, namely 1 material validator and 2 media validators. The practicality test was carried out on 27 fourth grade students of SD Negeri 05 Air Tawar Barat with the aim of finding out the practicality and effectiveness of the product. The validation results from the material expert validators obtained an average of 4.83 with the category of "very valid". The results of the assessment of 2 media validators obtained an average of 4.81 with the category of "very valid". The results of the media practicality test obtained an average score of 4.48 with the category of "very valid". The results of the effectiveness test using classical completeness showed that of the 27 students who completed it, there were 23 students with a percentage of 85% exceeding the classical completeness requirement, namely ≥ 75% of students who completed their learning outcomes. Based on the results of the validity, practicality, and effectiveness tests, it can be concluded that the resulting animation video media is feasible and effective so that it can be used in elementary school grade IV science subjects
Factors That Influence the Persistence of Company Profits in Manufacturing Companies Listed on the Indonesian Stock Exchange Huda, Ihsanul; Winarsih, Winarsih
Husnayain Business Review Vol. 4 No. 2 (2024)
Publisher : Asosiasi Dosen Peneliti Ilmu Ekonomi dan Bisnis Indonesia (ADPEBI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54099/hbr.v4i2.939

Abstract

Financial statements are a tool for management to convey information about the company's economic and financial performance for users of financial statements, both internal and external parties. The income statement is part of the financial statements that present the profits earned by the company during a certain period. Information about earnings has an important role for parties with an interest in the company. The population in this study are companies listed on the IDX. The sample in this study is a manufacturing company listed on the Indonesia Stock Exchange in 2018-2020. The sampling technique that will be used in this research is purposive sampling. The analytical tool used is Multiple Linear Regression. Based on the results of the study, it can be concluded that cash flow volatility has a negative effect on earnings persistence, managerial ownership has a positive effect on earnings persistence, while sales volatility, debt levels, institutional ownership, and firm size have no effect on earnings persistence.  
Pengembangan Media Video Animasi pada Mata Pelajaran IPAS Kelas IV Sekolah Dasar Huda, Ihsanul; Amilia, Winanda; Anugrah, Septriyan; Rahmayanti, Elsa
Indo-MathEdu Intellectuals Journal Vol. 5 No. 4 (2024): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v5i4.1501

Abstract

Students have difficulty understanding one of the materials in the science and science subject, namely the material on changes in the form of substances. The problem with this material is that students have difficulty understanding changes in substance form and examples of substance form changes. This research aims to produce animation video media for science science subjects in grade IV elementary school that is valid, practical, and effective. The type of research used is research and development (R&D), using the 4-D development model. The validity test was carried out by 3 validators, namely 1 material validator and 2 media validators. The practicality test was carried out on 27 fourth grade students of SD Negeri 05 Air Tawar Barat with the aim of finding out the practicality and effectiveness of the product. The validation results from the material expert validators obtained an average of 4.83 with the category of "very valid". The results of the assessment of 2 media validators obtained an average of 4.81 with the category of "very valid". The results of the media practicality test obtained an average score of 4.48 with the category of "very valid". The results of the effectiveness test using classical completeness showed that of the 27 students who completed it, there were 23 students with a percentage of 85% exceeding the classical completeness requirement, namely ≥ 75% of students who completed their learning outcomes. Based on the results of the validity, practicality, and effectiveness tests, it can be concluded that the resulting animation video media is feasible and effective so that it can be used in elementary school grade IV science subjects
Co-Authors Amilia, Winanda Anugrah, Septriyan Noviyanto, Alfian Rahmayanti, Elsa Sukmarani, Galuh Winarsih Winarsih