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All Journal Jurnal Kedokteran Diponegoro Jurnal Mahasiswa Fakultas Hukum Jurnal Ilmiah Mahasiswa FEB Rubikon: Journal of Transnational American Studies Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer EQIEN - JURNAL EKONOMI DAN BISNIS Jurnal Akuntansi Bisnis dan Ekonomi (JABE) Progress: Jurnal Pendidikan, Akuntansi dan Keuangan Jurnal Riset Pembelajaran Matematika Sekolah Akrab Juara : Jurnal Ilmu-ilmu Sosial Artikulasi : Jurnal Pendidikan Jurnal Pengabdian Kepada Masyarakat Patikala Jurnal Kolaboratif Sains Indonesian Journal of Prosthodontics Chemical Engineering Journal Storage (CEJS) Klik - Jurnal Ilmu Komputer Yuridika Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) Jurnal Riset Pendidikan Agama Islam INSANI Journal Ta'lim of Journal STKIP Aisyiyah Riau PEKBIS Info Abdi Cendekia ISJOUST Gudang Jurnal Multidisiplin Ilmu Al-Kharaj: Jurnal Ekonomi, Keuangan & Bisnis Syariah Jurnal Pengabdian Nusantara Menulis: Jurnal Penelitian Nusantara JURNAL PENDIDIKAN DAN KEBUDAYAAN MISSIO
Rizky Amalia
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Pengaruh Konsentrasi Semicoke sebagai Reduktor terhadap Peningkatan Kadar Nikel pada Bijih Nikel Ore Laterit dari Maluku Utara Rizky Amalia; A. Sry Iryani; Faisal Riza Basalamah
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 06 (2025): Chemical Engineering Journal Storage (CEJS)-December 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i06.24477

Abstract

Indonesia merupakan negara dengan cadangan bijih nikel laterit yang melimpah, khususnya di wilayah Maluku Utara. Namun, kadar nikel dalam bijih tersebut umumnya masih rendah sehingga memerlukan proses peningkatan kadar sebelum dimanfaatkan dalam industri. Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi semicoke sebagai reduktor terhadap peningkatan kadar nikel dalam proses reduksi bijih nikel ore laterit. Proses reduksi dilakukan menggunakan rotary kiln pada suhu 800°C selama 60 menit dengan lima variasi persen reduktor semicoke, yaitu 4%, 4.5%, 5%, 5.5%, dan 6%. Hasil pengujian menggunakan X-Ray Fluorescence (XRF) menunjukkan bahwa kadar nikel tertinggi diperoleh pada variasi penambahan semicoke sebesar 6%. Dimana, kadar nikelnya meningkat dari 1,71% menjadi 1,82% dengan persentase peningkatan kadar nikel sebesar 6,43%. Efektivitas semicoke sebagai reduktor didukung oleh karakteristik fisik dan kimia yang unggul, seperti kandungan karbon tetap tinggi (>75%), porositas baik, kadar abu dan sulfur rendah, serta kestabilan termal yang tinggi. Selain smemberikan hasil yang lebih efisien, penggunaan semicoke juga dianggap lebih ramah lingkungan dan ekonomis dibandingkan reduktor konvensional seperti batubara. Penelitian ini menunjukkan bahwa semicoke dapat menjadi reduktor alternatif dalam proses pirometalurgi nikel laterit.
Pengaruh Return On Assets (ROA), Debt To Equity Ratio (DER) Dan Current Ratio (CR) Terhadap Harga Saham Suhartono, suhartono; Novita Damayanti; Lukman Hakim6; Vera Agsutina Yanti; Taat Kuspriyono; Rizky Amalia; abdurrachman, Abdurrachman
Jurnal Akuntansi Bisnis dan Ekonomi (JABE) Vol 12 No 1 (2026): Jurnal Akuntansi Bisnis dan Ekonomi (JABE)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/jabe.vol12.iss1.2026.3218

Abstract

The capital market is a meeting place for parties with excess funds and those requiring additional capital, both for the short and long term. Profits are calculated by considering the sales yield per share. The stock price itself is the value or price of a share traded on the stock market. This study aims to determine the effect of variables such as Return on Assets, Debt to Equity Ratio, and Current Ratio on stock prices listed on the Indonesia Stock Exchange. This study used a quantitative approach with multiple linear regression using SPSS version 27. The sample was taken using a purposive sampling technique, with 11 companies. The results showed that simultaneously, the variables ROA, DER, and CR had a significant positive effect on stock prices, as indicated by the calculated F value of 12.101, which is greater than the F table of 2.839, with a significance level of 0.001, which is below the 0.05 limit. Partially, only the CR variable had a significant positive effect on stock prices, with a calculated t value of 5.389 and a significance level of 0.001. Meanwhile, the ROA and DER variables did not show a significant effect, with significance levels of 0.383 and 0.393, respectively, exceeding the 0.05 threshold. Keywords: ROA, DER, CR, Stock Price
Co-Authors A. Sry Iryani ABDUL RAUF Abdurrachman Abdurrachman Abdurrachman Abdurrachman Abdurrachman, Abdurrachman Ade Onny Siagian Adhis Shifa Aulia Agustina Ahmad Suriansyah Ainun Rofiah Alan Budi Kusuma Amalia Tresna Fadhilah Amallia N. Setyawati Arta Mulya Budi Harsono Bryan Givan Dwi Antari Wijayanti Dwi Ngestiningsih Erhamwilda Eri Hendra Jubhari Evi Fadilah Faisal Riza Basalamah Farla, Wita Fenny Purwani Herayati Hilda Yunita Sabrie Irfan Candra Ramadhan Iwan Sanusi Janter Bronson Samosir Jeni Astuti Lukman Hakim6 Luthfiyani, Nur Azizah M. Aris Safii M. Ziyan Takhqiqi Arsyad Makmuri Makmuri Mohd Hasmadi Ismail Muzzadi Ninuk Riesmiyantiningtias NOVITA DAMAYANTI Novitawati Novitawati Nur Afliah Rahma Nuraeni Nurul Muhlisa Nurulfalah Diar Rahmawaty, Rahmawaty Resmi Ridwanti Batubara Rosmeri RR. Ella Evrita Hestiandari Rusdi Hidayat Nugroho Seca Gandaseca Serly Oktarina Sintike Frastika Sri Islamiyah Putri Abidin SRI RAHAYU Suhartono Sundari Melisa Supriyanto, Toto Syarif Hidayatullah Taat Kuspriyono Tahir, Rahmah Vera Agsutina Yanti Yos Karimudin Zahra Ramadhani