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All Journal Jurnal Ekonomi, Manajemen, Akuntansi dan Keuangan Jurnal Akuntansi, Manajemen Dan Ekonomi Islam (JAM-EKIS) INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Indonesian Mining and Energy Journal JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Jurnal Eksakta Kebumian Jurnal Pendidikan Guru Madrasah Ibtidaiyah Al-Amin Jurnal Pengabdian Masyarakat dan Riset Pendidikan
Subandrio
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Evaluasi Jumlah Kebutuhan Alat Gali Muat dan Alat Angkut Untuk Mencapai Target Produksi Overburden di PT Nuansacipta Coal Investment Palaran, Kalimantan Timur Alvando Alone, Marcel Samuel; Korra Herdyanti, Mixsindo; Marwanza, Irfan; Putra, Danu; Subandrio
Indonesian Mining and Energy Journal Vol. 6 No. 2 (2023): November
Publisher : Program Studi Teknik Pertambangan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/imej.v6i2.19267

Abstract

Ketercapaian produksi merupakan salah satu indikator keberhasilan kegiatan operasional penambangan. Pemenuhan indikator ini umumnya disebabkan faktor-faktor operasional peralatan tambang, khususnya pada alat gali dan alat muat. Salah satu faktor ini adalah kesediaan alat tambang, yang didalamnya terdiri dari ketersediaan fisik (PA), ketersediaan mekanis (MA), dan efektif pemakaian (EU). Rendahnya nilai parameter umumnya berdampak pada ketidaktercapaian target produksi. Pada penelitian ini menggunakan metode evaluasi kuantitatif, dimana dilakukan evaluasi pada jumlah kebutuhan alat yang digunakan untuk mencapai target produksi overburden, data yang dibutuhkan pada penelitian, waktu siklus dari alat muat dan angkut. Dilakukan simulasi pada waktu standby alat untuk mengoptimalisasikan hasil produksi dari alat yang digunakan. Perhitungan terhadap produktivitas dan produksi tercapai dilakukan pada skenario sebelum dan setelah peningkatan kinerja. Sebagai indikator keberhasilan, faktor keserasian (MF) juga dihitung pada kedua skenario. Pada akhir studi, dilakukan perhitungan kebutuhan peralatan untuk melihat pengaruh peningkatan kinerja pada kebutuhan peralatan tambang. Setelah dilakukan pengolahan data yang didapat dapat kesimpulan bahwa optimalisasi waktu standby alat tidak cukup untuk mencapai target produksi overburden, dan dibutuhkan satu unit tambahan pada alat angkut.
The Influence Of Compensation And Organizational Culture On PT Employee Performance. YamahaThamrin Brothers Manna-Kaur Subandrio; Mafrino , Jorghi
Jurnal Ekonomi, Manajemen, Akuntansi dan Keuangan Vol. 5 No. 2 (2024): April
Publisher : Penerbit Jurnal Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53697/emak.v5i2.1608

Abstract

This research aims to determine the influence of compensation and organizational culture on employee performance at PT. Yamaha Thamrin Brothers Manna-Kaur. This type of research uses quantitative descriptive research methods. The population used in this research were employees from PT. Yamaha Thamrin Brothers Manna-Kaur. The number of respondents in this study was 50 people. The data collection method uses a questionnaire and uses analysis techniques using multiple linear regression analysis tests and hypothesis testing, namely the t test and f test. Based on the results of multiple linear regression, the regression equation form Y = 2.224 + 0.531 X1 + 0.497 (2.192> 1.677) and (sig α = 0.001 < 0.005). This means H_0 is rejected and H_a is accepted. Organizational culture has a positive and significant effect on employee performance, this is proven by the results of the t test showing the value of tcount > ttable (2.097 > 1.677) and (sig α = 0.001 < 0.005). This means H_0 is rejected and H_a is accepted. Compensation (X1) and Organizational Culture (X2) together have a significant effect on Employee Performance (Y) at PT. Yamaha Thamrin Brothers Manna- Kaur, this is proven by the F test showing the value of fcount > ftable, namely 11.254 > 3.19 and (sig α = 0.000 < 0.005). This means H_0 is rejected and H_a is accepted.
The Effect Of Training And Career Development On Employee Performance PT. Indofood Bengkulu City Subandrio; Saputra , Andika M
Jurnal Ekonomi, Manajemen, Akuntansi dan Keuangan Vol. 5 No. 2 (2024): April
Publisher : Penerbit Jurnal Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53697/emak.v5i2.1613

Abstract

This study aims to determine the influence of training and career development on the performance of PT employees. Indofood Bengkulu City. This type of research uses quantitative descriptive research methods. The population used in this study was employees of PT. Indofood Bengkulu City. The number of respondents in the study amounted to 55 people. The method of data collection is using questionnaires and using analysis techniques using multiple linear regression analysis test and hypothesis test i.e. test t and f test. Based on the results of multiple linear regression, the form of regression equation Y= 2.441 + 0.479 X1 + 0.351 X2 and the results of t test and f test this study can be concluded that Training has a positive and significant effect on Employee Performance, this is evidenced by the results of t test showing the value of thitung > ttable (3.392 > 1.674) and (sig α = 0.002 < 0.005). This means that H_0 is rejected and H_a is accepted. Career Development has a positive and significant effect on Employee Performance, this is evidenced by t test results showing thitung values > ttable (3.197 > 1.674) and (sig α = 0.001 < 0.005). This means that H_0 is rejected and H_a is accepted. Training (X1) and Career Development (X2) together have a significant effect on the Performance of Employees (Y) at PT. Indofood City Bengkulu, this is proved by the F test showing a count value > ftable, i.e. 21,277 > 3.17 and (sig α = 0.000 < 0.005). This means that H_0 is rejected and H_a is accepted.
PENGARUH CUSTOMER SATISFACTIONT DAN CORPORATE REPUTATIONT TERHADAP LOYALITAS PELANGGAN (Studi Pada Pelanggan PT. JNE Kota Bengkulu) Meilaty Finthariasari; Fernandez, Zicco; Subandrio; Dedi Wahyudi
Jurnal Ilmiah Akuntansi, Manajemen dan Ekonomi Islam (JAM-EKIS) Vol. 8 No. 1 (2025): Jurnal Ilmiah Akuntansi, Manajemen, dan Ekonomi Islam (JAM-EKIS)
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to determine the effect of customer satisfaction and corporate reputation on customer loyalty (study on customers of PT. JNE Bengkulu City). The population used in this study is all customers who use the services of PT. JNE Bengkulu City with a total sample of 120 respondents. Data collected through online questionnaires were then processed using the SPSS test tool version 26. The results of this study indicate that partially and simultaneously the Customer Satisfaction and Corporate Reputation variables have a significant positive effect on Customer Loyalty.  
Implementasi Metode Nurul Bayan Pada Pembelajaran Tahsin Al-Qur’an Utami, Nurul; Budianto; Subandrio
Jurnal Pendidikan Guru Madrasah Ibtidaiyah Al-Amin Vol. 3 No. 2 (2024): October
Publisher : STAI AL-AMIN

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Abstract

The aims of this study were 1) to find out the application of the nurul bayan method to learning Al-Qur'an tahsin in one of the Islamic elementary schools in Bekasi. 2) To determine the supporting and inhibiting factors of the nurul bayan method. The research method used is a qualitative research approach with descriptive qualitative methods. Data collection uses interviews, observation and documentation using data collection analysis, data reduction, data display and conclusion drawing/verification. The results of the study revealed that: 1) The application of the nurul bayan method to learning Al-Qur'an tahsin in one of the Islamic elementary schools in Bekasi begins with preparing material, before starting learning students pray first then students listen to Al- Qur'an recitation followed by the tajwid law contained in it, after that it is repeated several times, then students are grouped and appointed one by one to read the verses that have been read by the teacher, then continue with writing. 2) The supporting factors and inhibiting factors for the nurul bayan method are the supporting factors, namely the book used is very concise and easy to teach to students while the inhibiting factors are age, language and class management factors.
Pengaruh pH dan Ukuran Partikel Dalam Proses Flotasi Bijih Nikel Limonit Lie, Nobel Alief; Subandrio; Palit, Christin; Dahani, Wiwik; Kurniawati, Riskaviana; Fadliah
Indonesian Mining and Energy Journal Vol. 6 No. 2 (2023): November
Publisher : Program Studi Teknik Pertambangan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/imej.v6i2.19244

Abstract

Peningkatan konsumsi nikel mencapai 17,2 % pada tahun 2021. Hal ini mempengaruhi jumlah sumberdaya dan cadangan nikel terutama bijih laterit. Peningkatan produksi nikel laterit diakibatkan karena berkurangnya pasokan nikel sulfida berkadar tinggi. Oleh karena itu perlu dilakukannya proses yang lebih ekonomis untuk memperoleh nikel dari sumberdaya, salah satunya dengan metode flotasi. Pada penelitian kali ini berfokus pada permasalahan pengaruh pH dan ukuran partikel dalam pengolahan bijih nikel limonit dengan metode flotasi. Tujuan dari penelitian ini adalah untuk mendapatkan data-data terkait optimalisasi variabel flotasi yaitu pH dan ukuran partikel yang berkaitan dengan hasil recovery dari hasil flotasi. Adapun variabel flotasi yang dianalisis yaitu ukuran partikel -100+120 mesh, -120+170 mesh, -170+200 mesh, -200 mesh dan pH larutan 9, 10, 11. Variabel tetap pada proses flotasi ini adalah waktu aerasi 10 menit, persen padatan 25%, dosis kolektor asam oleat 1000 g/ton, dosis depresan sodium silikat 1500 gr/ton dan frother pine oil 85 gr/ton. Hasil dari penelitian ini menunjukan bahwa pH dan ukuran partikel berpengaruh dalam kestabilan proses flotasi. Kemudian didapatkan hasil flotasi terbaik yaitu pada kondisi pH 10 dan ukuran -170+200 mesh dengan nilai recovery sebesar 85,30%.
SUSTAINABLE NICKEL RECOVERY FROM NICKEL SLAG WASTE USING DIETHYLAMINE DITHIOCARBAMATE: ENHANCING RESOURCE EFFICIENCY AND MINIMIZING ENVIRONMENTAL IMPACT Fadliah, Fadliah; Burhannudinnur, Muhammad; Taba, Paulina; Wahid Wahab, Abdul; Kasim, Syahruddin; Karim, Abdul; Hasri, Hasri; Subandrio; Widayati Putri, Tri; Nur, Arfiani; Yasmaniar, Ghanima; Husla, Ridha; Jarre, Sulistiani; Zahra, Audrey; Abdalrazaq, Eid; Kollur, Shivaa Prasad; Raya, Indah
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.22589

Abstract

Slag waste from the metal refining industry, if left to accumulate for a long time, can become a source of environmental pollution due to the content of heavy metals that can dissolve and spread to the surrounding environment. However, slag can also be an alternative source for obtaining valuable metals. Aim: This study aims to examine the ability of diethylaminedithiocarbamate ligands to recover nickel metal from slag waste through the mechanism of complex compound formation. Methodology and results: The extraction process was carried out at the optimal pH for each ligand to maximize the selectivity and efficiency of metal recovery. Characterization of the complex compounds from the reaction was carried out using various analytical techniques, including Fourier Transform Infrared Spectroscopy (FTIR), UV-visible spectroscopy (UV-Vis), X-Ray Diffraction (XRD), Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS), and melting point tests to determine the thermal stability of the compound. The study results indicate that diethylaminedithiocarbamate ligands can selectively form complex compounds with nickel metal in slag and are effective in recovering metals from slag waste with a recovery value of 94.88%. Conclusion, significance, and impact study: The results of this study indicate that using diethylaminedithiocarbamate ligands can be an environmentally friendly approach to using slag waste as a secondary source of metals.
Etnografi Pengenalan Kuliner Khas Aceh Bagi Mahasiswa di Kota Kendari: Pengabdian La Ode Aris; Laxmi; Siti Hermina; Subandrio; Adhe Ismail Ananda
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 1 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 1 (Juli 2025 -
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i1.1752

Abstract

This community service activity aims to determine the forms of activities and initiatives undertaken by the association to preserve Acehnese values, traditions, and culinary delights among migrants in Kendari City, and to understand the mechanisms and activities carried out by the association to strengthen bonds of solidarity, social cohesion, and build networks among fellow migrants from Aceh in Kendari. The background to this activity stems from the fact that the presence of regional associations in migration destination cities such as Kendari plays a vital role in the lives of migrants. The functions of associations are very diverse, ranging from strengthening bonds of brotherhood, helping newcomers adapt to their new environment, to preserving and promoting cultural values of their region of origin. This activity involved observation, interviews, training, and technical assistance within the Aceh association. The results of the activity showed that the culinary delights of the association can attract the attention of the local community in Kendari. The diverse culinary delights served at the association can attract customers who want to experience the unique culture. For example, as the name suggests, teh tarik can attract the attention and interest of customers. Associations are often a symbol of community strength. Culinary arts can foster a sense of belonging to a particular region or community.
PENGARUH KONSENTRASI LARUTAN GARAM NATRIUM KLORIDA SEBAGAI MEDIA PEMISAH TAILING TIMAH DENGAN METODE SHAKING TABLE Madani Saputra, Naufal; Subandrio; Palit, christin; Dahani, Wiwik; Suliestyah; Fadliah
Indonesian Mining and Energy Journal Vol. 8 No. 1 (2025): Mei
Publisher : Program Studi Teknik Pertambangan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/imej.v8i1.22278

Abstract

Tailing merupakan limbah hasil pengolahan bijih yang masih dapat berpotensi menghasilkan manfaat jika diolah sebaik mungkin. Tailing timah berupa pasir biasanya mengandung mineral-mineral pengikut salah satunya yaitu zirkon. Zirkon merupakan salah satu senyawa kimia yang bersifat stabil. Zirkon sering ditemukan mengandung unsur radioaktif yang terdapat dalam struktur kristalnya. Terdapatnya kandungan zirkon dalam tailing timah menandakan masih adanya manfaat dari tailing timah tersebut. Penelitian ini menggunakan metode shaking table untuk memisahkan tailing timah dengan media pemisah larutan NaCl guna meningkatkan kadar zirkon dalam sampel tailing timah. Sampel yang digunakan dalam penelitian menggunakan tailing timah yang diperoleh dari PT Timah Tbk site Toboali, Bangka Selatan. Metode penelitian yang dilakukan dalam penelitian ini menggunakan metode eksperimental, untuk melihat pengaruh konsentrasi NaCl terhadap pemisahan bijih timah dengan metode shaking table. Konsentrasi NaCl yang digunakan dalam penelitian ini yaitu, 2,5; 3,76; dan 7,5 M, dengan kemiringan 0,9° yang dimana masing-masing variabel menggunakan sampel berukuran +100 mesh sebanyak 4000 gram. Sampel awal sebelum penelitian dilakukan uji kandungan mineral (XRD) dan uji kadar zirkon (XRF), lalu pada konsentrat hasil pengolahan dilakukan uji kadar zirkon (XRF), sehingga dapat mengetahui dan memperhitungkan perolehan dari setiap pengujian yang dilakukan.
KAJIAN KANDUNGAN BESI DAN SILIKA PADA MOLTEN ALUMINIUM DALAM PROSES HALL HEROULT DENGAN METODE STATISTICAL PROCESS CONTROL DI PT X  Septiano, Michael; Subandrio; Kurniawati, Riskaviana; Dahani, Wiwik; Palit, Christin; Suliestyah
Indonesian Mining and Energy Journal Vol. 8 No. 1 (2025): Mei
Publisher : Program Studi Teknik Pertambangan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/imej.v8i1.22303

Abstract

Aluminium berasal dari deposit bauksit yangmengandung bijih aluminium dengan beraneka macam komposisi didalamnya. Bauksit memiliki kandungan alumina yang tinggi, yaitu sekitar 30% hingga 60% . Proses Hall Heroult adalah proses elektrokimia di mana alumina dilarutkan dalam elektrolit dan direduksi menjadi aluminium pada suhu sekitar 960 °C untuk menghasilkan aluminium. Pada proses pengolahannya alumina masih memiliki kandungan pengotor diantaranya Fe dan Si, bahkan hingga menjadi produk akhir. Penelitian ini ingin mengkaji apakah selama proses hall heroult berlangsung kandungan besi dan silika pada proses masih dalam batas pengendalian atau tidak dengan metode statistical process control dan diakhiri dengan kombinasi optimal akan kandungan besi dan silika. Hasil kajian dengan metode statistical process control dengan alat bantu control chart didapati pada X Bar Chart dan R Chart Fe Content dan Si Content pada periode bulan Juni 2023 hingga November 2023. Untuk subkelompok Fe Content masih berada dalam batas pengendalian, baik untuk rata-rata maupun variabilitas proses dikarenakan tidak menyinggung UCL X (0.170), LCL X (0.100) dan UCL R (0.144), LCL R (0). Selanjutnya untuk subkelompok Si Content pada subkelompok pertama melewati batas kendali atas pada UCL X (0.046) dan UCL R (0.022) pada titik subkelompok satu sebesar 0.049 pada X Bar Chart dan 0.023 pada R Chart, tetapi aman untuk batas kendali bawah karena tidak menyinggung atau melewati LCL X (0.035).
Co-Authors Abdalrazaq, Eid Abdul Karim Alvando Alone, Marcel Samuel Arfiani Nur Aryanto, Reza Budianto Christin Palit Dedi Wahyudi Elsa Sabrina Faradiva Cutrisna Fachry Abda El Rahman Fadliah Fadliah, Fadliah Fernandez, Zicco Ghanima Yasmaniar Hasri Hasri Husla, Ridha Indah Raya Irfan Marwanza Kollur, Shivaa Prasad Korra Herdyanti, Mixsindo Kurniawati, Riskaviana La Ode Aris Laxmi Lie, Nobel Alief Madani Saputra, Naufal Mafrino , Jorghi Meilaty Finthariasari Muhammad Burhannudinnur Muhammad Fazjry Tri Nugroho Nurul Utami Palit, Christin Paulina Taba Putra, Danu Saputra , Andika M Septiano, Michael Siti Hermina Suliestyah Sulistiani Jarre Syahruddin Kasim Wahid Wahab, Abdul Widayati Putri, Tri wiwik dahani, wiwik Zahra, Audrey