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All Journal Meyarsa:Jurnal Ilmu Komunikasi dan Dakwah Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) JURNAL ABDIKARYASAKTI Sewagati Intelektual : Jurnal Penelitian Dosen Akuntansi Journal of Manufacturing in Industrial Engineering & Technology EKOBIS ABDIMAS : Jurnal Pengabdian Masyarakat JUSTICE: Journal of Social and Political Science International Journal of Economics, Business and Innovation Research Komuniti: Jurnal Komunikasi dan Teknologi Informasi Rekayasa Sistem Energi dan Manufaktur Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) NERS Jurnal Keperawatan
Suhariyanto
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The Effect of Profitability and Capital Structure on Stock Prices with Firm Value as an Intervening Variable in LQ45 Companies Listed on the IDX in 2018-2021 Suhariyanto; Sumaryo
JOURNAL INTELEKTUAL Vol 4 No 2 (2025): JOURNAL INTELEKTUAL
Publisher : LPPM STIE PPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61635/jin.v4i2.223

Abstract

Introduction/Main Objectives: This study aims to examine the effect of Profitability and Capital Structure on Stock Prices with Firm Value as an Intervening Variable in LQ45 Companies listed on the Indonesia Stock Exchange (IDX) in 2018-2021. Background Problems: There is uncertainty regarding the fundamental factors that influence stock prices, which shows inconsistent findings, especially regarding the influence of profitability and capital structure. Novelty: This study offers novelty by examining a different unit of analysis and time period compared to previous research and by incorporating a moderating variable. Research Methods: Using quantitative methods with secondary data from financial statements with samples carried out by purposive sampling and data analysis was carried out using multiple linear regression with the help of SPSS software. Finding/Results: Profitability has a significant effect on firm value, while capital structure does not. Profitability, capital structure, and firm value do not have a significant effect on stock prices. Firm value is also unable to mediate the effect of profitability or capital structure on stock prices. Conclusion: These findings indicate that it is better to assess financial statements from various aspects, not only from profitability and capital structure, in order to obtain a more accurate picture of the company's prospects
Analysis and selection of skf bt2-8131 a roller bearing lubricant for the vertical roller mill at pt. solusi bangun indonesia tuban factory Suhariyanto; Rusdiyana, Liza; Sampurno, Bambang; Hakim, M Lukman; Abimanyu, Abiyyu Abyan
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol 4 No 2 (2025): December
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27213560.v4i2.9361

Abstract

In the industrial world, friction between machine elements such as bearings can affect the performance and service life of components, making lubrication systems based on tribology principles very important. This study analyzes the selection of lubricants for SKF BT2-8131 A roller bearings in a Vertical Roller Mill owned by PT. Solusi Bangun Indonesia, Tuban Factory, with the aim of determining a better lubricant than before and identifying the type of lubricant film formed. The research process involved collecting machine operational data and lubricant specifications, as well as calculating the kappa value and Streibeck curve to determine the type of lubricant layer, such as boundary, mixed, or full film lubrication. The results showed that Pertamina Masri RG 460 lubricant with a kappa value of 1.29 was selected because it had adequate technical performance and was more economical, although Mobil SHC 600 460 lubricant with a kappa value of 1.73 was also recommended if technical performance was the main priority. The results were validated by calculating the predicted bearing life to ensure optimal efficiency and performance.
Redesign of the coal gate on a 20 ton/hour chain grate boiler at pt sopanusa Suhariyanto; Rusdiyana, Liza; Dika Andini Suryandari; Dimitra Meidina Kusnadi; Hafizh Naufal Atho’ulloh
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol 4 No 2 (2025): December
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27213560.v4i2.9362

Abstract

A chain grate boiler is a type of boiler with a moving grate system to transport solid fuel through the furnace. The coal gate regulates the distribution flow of coal from the hopper to the furnace. In the 20 tons/hour capacity chain grate boiler at PT Sopanusa, the existing coal gate experienced mechanical failure due to damage to components in the roller chain, shaft, and bearings, so that it could not operate as a coal distribution regulator. To overcome this problem, it is necessary to redesign the coal gate on the 20 tons/hour capacity boiler chain grate hopper at PT Sopanusa. The main components, such as the chain, sprocket, worm gear, shaft, bearing, and pin on the coal gate, need to be redesigned to avoid mechanical failure of the coal gate. After redesigning the main components of the coal gate, a coal gate design that is compatible with the boiler chain grate construction will be obtained. The results of the coal gate redesign are as follows: a lifting chain with Chain Grade 80 type, 4 mm diameter, and a sprocket diameter of 320.92 mm; a worm gear with a ratio of 30:1 using hardened steel for the worm and phosphor bronze for the gear; a shaft with S45C material, 60 mm diameter; bearings using single row deep groove ball bearings, unit number ASB Bearing UCP 212; and pins made of SAE 1045 material with dimensions of 60x20x12 mm to support the manual coal gate mechanism on the 20 tons/hour capacity boiler chain grate at PT Sopanusa.
Replanning of BC-7 belt conveyor in coal handling system with capacity of 150 tph at Lombok ftp-2 (2x50mw) power plant Suhariyanto; Liza Rusdiyana; Mahirul Mursid; Budi Luwar Sanyoto; Berlian Putri Fahmiliana
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol 4 No 2 (2025): December
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27213560.v4i2.9363

Abstract

Lombok has high tourism potential that requires a reliable electricity supply, one of which comes from the Lombok FTP-2 2Å~50 MW Power Plant in Sambelia, East Lombok. This power plant uses coal supplied through a Coal Handling system, with Belt Conveyor BC-7 as one of its main components. This study aims to redesign the BC-7 Belt Conveyor with a capacity of 150 TPH through manual calculations of capacity and motor power and using Helix Delta T-6 Conveyor Design software. The study focuses on one conveyor unit, using coal material, and only discusses aspects of capacity and motor power under stable operating conditions. The methods used include literature studies, field observations, and data collection from the Lombok FTP-2 PLTU. The data was then processed for manual calculations and software simulations. The results showed a transport capacity of 165 tons/hour (a 10% increase from the previous capacity). The highest motor power without SF from the software was 8.49 kW (19.75% greater than the manual result). The use of software proved to be more efficient and helpful in planning belt conveyor systems.
Co-Authors Abimanyu, Abiyyu Abyan Adiwena, Egan Hargo Affan Mashuri Agung Samudra Agus Sugiarto Amalia Andrean Eko Haryoko Angin, Eunicke Adiel Aria Perangin Anisa, Rochmatul Anisah Nur Fajarwati Aprilia Sari, Petty Arif Ramadhan Candrasa Aristha Purwanthari sawitri Armin Naibaho Arni Utamaningsih Bagus Tirto Aji Bambang Sampurno, Bambang Batutah, Moh Arif Bazofi Ismail Harahap Berlian Putri Fahmiliana Budi Luwar Sanyoto Catrya Ghazy Afif Tsany Darmawan, Dheo Hilman Dewi Fatmawati Didik Subijantoro Dika Andini Suryandari Dimitra Meidina Kusnadi Dina Asmiati Dzulfikar, Hidayah Mimtsa Alfaini Edy Sulistiyawan, Edy Fachrudy Asj'ari Fadjar Purnomo Faisal Rizqi Hanggara Firly Regita Firman Romadhon, Riswanda Fitriyanti, Ayang Gerard Aponno Gusmiarni Hafizh Naufal Atho’ulloh Hakim, M Lukman Ikhram Syalsabila, Hadi Imam Hidayat Indra Syahrul Ramadhan Joko Setiono Khoirina Putri Izza Rohmah Laksono, Agus Edy Laskono, Nuswar Barruli Liza Rusdiyana Liza Rusdiyana M. Noris Al Pratama Mahirul Mursid Mila Esti Permata Mohammad Dzikril Akbar Muttaqin, Mohammad Zainal Nanda Luthfi Aziz, Nanda Luthfi Aziz Nawir Rasidi Nurbani Nursabita, Ayusha Nurul Huda P, Ferdi Razaq Pamekas, Paksi Pamungkas, Hafizhan Faris Pradana, Bayu Bakti Pramudya, Wisnu Agung Prayoga, Devid Budi Purwanti Putri Issanti Radhia Jatu Noviarsita Sakti Rafi, Muhammad Nur Rahardian, Willy Evan Rahma Maulidia Arzanti Rahmawan, fauzi Akbar Restu Putri Wardani Saadah, Runiatus Salsabila Rahmi Santoso, Muhammad Hafizh Irsan Saptiyono, Ami Sitti Safiatus Riskijah Solikin Solikin Subiyanto, Hari Sukiranto, Sukiranto Sumardi Sumaryo Susapto Suselo Utoyo Susilo, Wiji Syafiuddin Syafrizal Fadhil Syahru Muharom, Muhammad Taufiq Rochman WINARTO