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Repositori Institusi
Coal Fuel Efficiency with Mixed Palm Shell Biomass for Steam Power Plant
The accumulation of coal-based fuels is depleting and to obtain coal fuel requires a great amount of money, as a corollary, measures must be taken to reduce the usage of this fuel. PT. Pembangkit Jawa Bali (PJB) is currently investigating the co-firi...
Repositori Institusi
Pengaruh Kinerja Lingkungan, Leverage Dan Likuditas Terhadap Nilai Perusahaan Dengan Profitabilitas Sebagai Variabel Moderasi
Thesis
Tujuan dari penelitian ini adalah untuk mengetahui pengaruh kinerja lingkungan,
leverage dan likuiditas terhadap nilai perusahaan dengan profitabilitas sebagai
variabel moderasi. Populasi dari penelitian ini adalah perusahaan pertambangan sub
sekt...
Repositori Institusi
PENGARUH PROFITABILITAS, SOLVABILITAS, UKURAN PERUSAHAAN DAN OPINI AUDIT GOING CONCERN TAHUN SEBELUMNYA TERHADAP OPINI AUDIT GOING CONCERN PADA PERUSAHAAN MINYAK, GAS DAN BATU BARA YANG TERDAFTAR DI BEI 2019-2022
The purpose of this study is to determine how factors such as profitability, creditworthiness, company size, and the prior year's business continuity assessment report affect the current business continuity assessment report. The methodology of ...
Jurnal Institusi
Evaluasi Kinerja Motor Coal Feeder Di PLTU Tenayan Raya Terhadap Pengaruh Perubahan Frekuensi
JURNAL TEKNIK; Vol. 16 No. 1 (2022): Edisi April 2022; 88-95
Induction motor is an AC type motor that works due to the induced stator current as a result of the relative difference between the rotor rotation with the rotating field produced by the stator current. Induction motor is called asynchronous motor be...
Jurnal Institusi
Management Strategy for Low-Quality Coal Resources to Support Sustainable Mining
Symbiosis Civicus; Vol. 2 No. 2 (2025): SYMBIOSIS CIVICUS; 49-60
This research analyzes the implementation of Good Mining Practice (GMP) in the management of low-rank coal mining at PT ABC, located in Berau Regency, East Kalimantan, and its contribution to the achievement of the Sustainable Development Goals (SDGs...
Jurnal Institusi
Heavy metal contamination status in the soil-water-rice system near coal-fired power plants in Cilacap, Indonesia
Jurnal Ilmiah Pertanian; Vol. 19 No. 3 (2022): Jurnal Ilmiah Pertanian; 145-154
Indonesia is intensively developing plenty of coal-fired power plants to support electricity demand growth. Some research showed the utilization of coal as an electrical energy source may produce anthropogenic contaminants (ACs) that can bioaccumulat...
Jurnal Institusi
The Impact of Operating Expenses, Total Debt, and Sales on Net Profit in Coal Mining
International Journal Science of Accounting, Auditing and Taxation; Vol. 1 No. 1 (2026): February; 1-13
This study aims to examine and analyze the impact of Operational Expenses, Total Debt, and Sales on Net Profit in Coal Subsector Mining Companies Listed on the Indonesia Stock Exchange for the period 2020-2023. This research is a quantitative study u...
Jurnal Institusi
Simulation of Pollutant Gas Dispersion on Case Study of Lontar 3 Coal Fired Power Plant in Addition into 1 x 660 MW Capacity in Kemiri, Tangerang District, Banten Province
Indonesian Journal of Chemistry; Vol 14, No 3 (2014); 219-225
Air quality simulation has been performed for additional capacity of Banten 1 x 600 MW Coal Fired Power Plant toward air quality degradation in its surrounding environment. The simulation was based on pollutant gas dispersion calculated using Gaussia...
Jurnal Institusi
Preparation and Characterization of Carbon Foam Derived from Fine Coal and Phenolic Resin
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 243-248
Carbon foam from fine coal and phenolic resin mixture had been prepared by heating in nitrogen atmosphere. The composition of fine coal in a mixture was 30, 35, 40, 45 and 50%. Physical and mechanical characters of carbon foam that were determined fr...
Jurnal Institusi
PROFIL VEGETASI LANSEKAP ADAPTIF PADA PASCATAMBANG BATUBARA DI INDONESIA
Wahana Forestra: Jurnal Kehutanan; Vol. 18 No. 1 (2023); 60-71
Post-mining land is generally damaged by physical properties related to soil texture and porosity, chemistry associated with low pH levels and nutrient deficits, as well as heavy metal content, low biodiversity, and loss of ecosystem services. It is ...
Jurnal Institusi
Pengaruh Earning Power dan Tingkat Suku Bunga terhadap Penilaian Ekuitas
Jalak: JURNAL AKUNTANSI LANCANG KUNING; Vol. 2 No. 2 (2024): JALAK; 107-116
Equity value illustrates the ability of company management both financial performance and non-financial performance. The purpose of equity value is to provide company owners, potential investors and stakeholders and shareholders with an appropriate a...
Jurnal Institusi
Pengaruh Good Corporate Governance terhadap Manajemen Laba pada Perusahaan Pertambangan Sub Sektor Batu Bara yang Terdaftar di Bursa Efek Indonesia Periode 2019 - 2021
Jalak: JURNAL AKUNTANSI LANCANG KUNING; Vol. 2 No. 3 (2024): JALAK; 240-250
The thesis enthited "The Influences of Good Corcorate Governance on Earnings Managenent in Coal Sub Sector Mining Companies Listed on the Indonesia Stock Exchange for the 2019-2021 period" examines the influence of good corporate governance...
Jurnal Institusi
Comparison of NAA XRF and ICP-OES Methods on Analysis of Heavy Metals in Coals and Combustion Residues
Indonesian Journal of Chemistry; Vol 17, No 2 (2017); 228-237
Heavy metals in the samples of coals and combustion residues (bottom ash and fly ash) from Pacitan coal-fired power plant (CPP) have been identified by using NAA, XRF, and ICP-OES methods. This research was aimed to understand the analysis results co...
Jurnal Institusi
Performance of paddy crop in swampland under organic pellet fertilization from Azolla and vermicompost
Jurnal Ilmiah Pertanian; Vol. 17 No. 2 (2021): Jurnal Ilmiah Pertanian ; 60-66
This study aimed to examine the effect of applying organic pellet fertilizers from vermicompost and Azolla using coal fly ash as an adhesive on paddy crop response in swampland. The research was performed in a pot experiment using a completely random...
Jurnal Institusi
Studi Eksperimental Kuat Tekan Beton Geopolimer Dengan Pemanfaatan Limbah Fly Ash
SENKIM: Seminar Nasional Karya Ilmiah Multidisiplin ; Vol. 2 No. 1 (2022): SENKIM: Seminar Nasional Karya Ilmiah Multidisiplin; 184-194
Concrete is a component composed of coarse aggregate, fine aggregate, water and cement. The use of cement in a building causes the release of CO2, to overcome this problem, a cement substitute is sought. Geopolymer concrete is concrete made from fly ...
PubMed
Experimental Studies on the Crack Initiation and Propagation of Hydraulic Fracturing with Different Coal Structure Combinations
ACS Omega
[Image: see text] Coal structure is one of the key geological factors that affects the effect of coal reservoir stimulation. Based on the geological spatial combination characteristics, thickness, and proportion of different coal structures, the coal...
PubMed
Coal Structure Characteristics of the 2# Coal Seam in the Jiaozuo Mining Area and Its Geological Dependence
ACS Omega
[Image: see text] To clarify the coal structure, spatial distribution, and controlling factors of the 2# coal seam in Jiaozuo mining, the drilling coal samples were collected to observe the coal type and coal structure. The coal macerals were identif...
PubMed
Numerical simulation of realistic top coal caving intervals under different top coal thicknesses in longwall top coal caving working face
Sci Rep
In the process of longwall top coal caving, the selection of the top coal caving interval along the advancing direction of the working face has an important effect on the top coal recovery. To explore a realistic top coal caving interval of the longw...
PubMed
Strength, Deformation, and Acoustic Emission Characteristics of Raw Coal and Briquette Coal Samples under a Triaxial Compression Experiment
ACS Omega
[Image: see text] Raw coal and briquette coal samples have similar deformation characteristics. Addition of binders added into briquette coal could change the coal property. To better capture the characteristics of briquette coal samples in compariso...
PubMed
Analysis of coal face stability of lower coal seam under repeated mining in close coal seams group
Sci Rep
Aiming at the problem of coal face failure of lower coal seam under the influence of repeated mining in close coal seams, with the working face 17,101 as a background, the coal samples mechanics test clarified the strength characteristics of the coal...