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All Journal Jurnal Penelitian Pendidikan PROSIDING SEMINAR KIMIA Jurnal Zarah JITK (Jurnal Ilmu Pengetahuan dan Komputer) Indonesian Journal of Chemistry Jambura Journal of Educational Chemistry Idealis : Indonesia Journal Information System Bivalen: Chemical Studies Journal International Journal of Social Science Kresna: Jurnal Riset dan Pengabdian Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis al Kimiya : Jurnal Ilmu Kimia dan Terapan
Ratna Kusumawardani, Ratna
Jurusan Pendidikan Kimia Dan Ilmu Pengetahuan Alam, Fakultas Keguruan Dan Ilmu Pendidikan, ‎Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Medicine & Pharmacology Public Health Social Sciences Other

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Effect of Preparation Acetone on Fish Bones Synthesized Through Sintering Method to Improve Hydroxyapatite Characteristics Kusumawardani, Ratna; Noviyanti, Atiek Rostika; Nurhadi, Mukhamad; Umar, Akrajas Ali
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 10 No. 2 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i2.29422

Abstract

In the development of advanced materials and various technological applications, the preparation and sintering processes have become two important factors in determining material characteristics. This research focuses on two main aspects, namely the effect of fish bone preparation by soaking in acetone and the surface area of the material in the sintering process as part of the process of developing better materials. This research aims to determine the effect of soaking fish bone powder with acetone and the effect of the surface area of sintered fish bones to produce hydroxyapatite (HA). The immersion process with acetone is included in the sample preparation stage, while the sintering process is included in the material synthesis stage. These two things can affect the characteristics of the HA produced after analysis from the X-ray diffraction test. The HA structure obtained from all samples is hexagonal with cell parameter values a = b ≠ c and space group P 63 / m, where all samples have a value range of a = b = 9,42 Å and c = 6,88 Å. HA crystallinity was identified through the XRD peak at 2θ = 25,8 (002); 31,7 (211); 32,1 (112); 32,8 (300); 34,0 (202); 39,7 (310); 46,6 (222); 49,4 (213); 50,4 (321). The PAF-900 and CAF-900 samples are similar to HA in JCPDS 01-089-4405 whose compound formula is Ca5(PO4)3(OH) while the PWAF-900 sample is similar to HA in JCPDS 01-075-3727 whose compound formula is Ca5(PO4)3(CO3)0.01(OH)1.3. The percentage of crystallinity of PAF-900, CAF-900, and PWAF-900 respectively was 84,767; 73,506; and 71,962% with HA grain sizes of 0,8964; 0,6808, and 0,7398 nm. The HA density of PAF-900 and CAF-900 samples is 3,149 g/cm3 while PWAF-900 is 3,146 g/cm3. Based on this description, it can be concluded that the soaking preparation stage with acetone produces HA with the chemical formula Ca5(PO4)3OH with a higher percentage of crystallization and is denser compared to HA obtained without going through the soaking preparation stage with acetone. The sintering stage also plays an important role in increasing the crystallization percentage. The surface area of the material being sintered also influences the percentage of crystallization and the grain size of the resulting HA. Sintered fish bone powder produces a greater percentage of crystallization and grain size than fish bone chunks
IMPLEMENTASI METODE WATERFALL PADA E-COMMERCE BERBASIS WEBSITE DI CLDG CLOTHING Kusumawardani, Ratna; Trisnandaru, Galih Muhammad; Manalu, Hans Christian Marasi Hamonangan; Suci Ramadani, Amanda
IDEALIS : InDonEsiA journaL Information System Vol. 9 No. 1 (2026): Jurnal IDEALIS Januari 2026
Publisher : Universitas Budi Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36080/idealis.v9i1.3602

Abstract

Pada era digital saat ini, perkembangan teknologi informasi mempunyai pengaruh yang sangat signifikan diberbagai aspek kehidupan manusia, salah satunya adalah industri perdagangan dimana hampir seluruh UMKM dalam kegiatan berdagang menggunakan platform e-commerce. Platform yang sering digunakan oleh UMKM adalah website dimana website dapat mempermudah para UMKM dalam memperoleh peluang untuk mendapatkan pembeli yang potensial. Salah satu UMKM yang ingin memperoleh pembeli yang potensial guna mengembangkan bisnisnya dengan memanfaatkan website adalah CLDG Clothing. CLDG Clothing adalah toko fashion yang menjual berbagai macam pakaian pria dan wanita yang berlokasi di Ciledug Tangerang. Permasalahan yang terjadi di toko ini adalah dalam proses pemasaran produk masih dilakukan secara offline di toko dimana pembeli datang langsung ke toko kemudian memilih barang dan langsung membayar barang tersebut, selain itu kurang efisien dalam proses manajemen inventaris dan pengelolaan laporan dimana aktivitas ini masih dilakukan secara manual di buku tulis sehingga menyebabkan pencatatan inventaris dan laporan menjadi kurang akurat. Berdasarkan permasalahan tersebut, maka peneliti membangun sebuah sistem informasi penjualan pakaian pria dan wanita berbasis website. Metode yang digunakan dalam membangun sistem adalah waterfall dan metode pengujian menggunakan blackbox serta bahasa pemrograman yang digunakan adalah PHP dengan database yang digunakan adalah PHP MyAdmin. Sistem informasi ini mempermudah pemilik toko dalam pengelolaan data transaksi dan laporan sehingga memperoleh data yang akurat serta mendapatkan pembeli yang potensial.
Co-Authors A. Rismawati Abdul Majid Abdul Majid Agus Harisandi Akrajas Ali Umar Akrajas Ali Umar Ana Fatimah Arma Ani Suryani Simbolon Anita Setiawati Anton Prasetyo Atiek Rostika Noviyanti Atiek Rostika Noviyanti Bayu Setiawan Darna Yunita Devi Listianingrum Devira Nur Ajizah Dini Yulia Sari Eka Parmawatika Fathur Insani Ridho Hadi Nur Hadi Nur Hadi Nur Hadi Nur Hadi Nur Hadi Nur Hadi Nur Hadi Nur Ida Ayu Putu Sri Widnyani Iis Intan Widiyowati Indah Nur Fitriana Ivan Sebastian Jumaryadi, Yuwan Manalu, Hans Christian Marasi Hamonangan Maulina Maulina Mohammad Syafrullah muflihah muflihah Muhamad Hamami Nata Mukhamad Nurhadi Mukhamad Nurhadi Mukhamad Nurhadi, Mukhamad Nabila Nur Agusti Nugraha Abdullah, Indra Nurlaili, Nurlaili Pratiwi, Ajeng Hayu Pristiningtyas Ambarwati Purwanto Purwanto Putri Wulan Mayangsari Rahmat Gunawan Rexy Anderson Tindangen Ria Retnowati Ria Retnowati Rindoi, Muhammad Robbiatul Adawiyah Rony, Zahara Tussoleha Ruwirohi, Jan Everhard Samidi Samidi Serly Wahyuni Salosso Sin Yuan Lai Sin Yuan Lai Sin Yuan Lai Sin Yuan Lai Siti Nurjanah Siti Rahma Sri Lestari Sri Rahma Wati Suci Ramadani, Amanda Sukemi Sukemi Sumari Sumari Tamara Claudya Susanti Teguh Wirawan Teguh Wirawan Triana Anggraini Trisnandaru, Galih Muhammad Tutik Sri Susilowati Wa Rizka Hafinah Watulingas, Maasje C. Wirhanuddin Wirhanuddin Yulianawati Yuni Kurnia Yuniati Mangesa