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All Journal Teknik Sipil dan Arsitektur Jurnal Sains dan Teknologi Al-Risalah : Jurnal Imu Syariah dan Hukum Jurnal Minds: Manajemen Ide dan Inspirasi Rekayasa Sipil SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi APTEK Jurnal Teknik Sipil-Arsitektur Journal of Educational Learning and Innovation (ELIa) International Journal of Economics (IJEC) Jurnal Audit dan Perpajakan Euntes: Jurnal Ilmiah Pastoral, Kateketik, dan Pendidikan Agama Katolik Perspektif Andalasian Livestock Advance Sustainable Science, Engineering and Technology (ASSET)
Antonius
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The Influence Of Work Motivation And Job Satisfaction On Employee Performance Through Employee Engagement Antonius; Lista Meria
International Journal of Economics (IJEC) Vol. 4 No. 2 (2025): July-December
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijec.v4i2.1506

Abstract

This study aims to examine how direct and indirect influence of work motivation, job satisfaction and employee continuity on employee performance atPT. Gajah Tunggal Tbk. This study was motivated by employee performance that was not mentioned so that a study was conducted to determine work motivation, job satisfaction and employee continuity which would later become the most influential variables on employee performance at PT. Gajah Tunggal Tbk. The population in this study were permanent employees at PT. Gajah Tunggal Tbk. and had worked for more than 1 year. While the research sample was taken using purposive sampling technique with a total of 200 respondents. This study is a quantitative study using the Structural Equation Model - Partial Least Square (SEM-PLS) method. The results of the study showed that work motivation was proven to have a positive effect on employee performance, job satisfaction had a positive effect on employee performance, work motivation had a positive effect on employee performance, job satisfaction did not have a positive effect on employee performance, the closest employee had a positive effect on employee performance and an indirect effect that was proven that employee turnover was able to mediate work motivation and job satisfaction on employee performance. After conducting the study, the researcher suggested expanding the population to the branches of PT. Gajah Tunggal Tbk located in other regions in Indonesia, in order to represent more answers from PT. Gajah Tunggal Tbk employees throughout Indonesia. In addition, it can also add other supporting variables, such as training, work environment, compensation, reward and punishment and other variables that are relevant to the novelty of the study
In Vitro Evaluation of Gambier Leaf Extract (Uncaria gambir Roxb.) from Pangkalan, West Sumatra, as a Natural Feed Additive to Improve Nutrient Digestibility in Ruminants Pazla, Roni; Zain, Mardiati; Antonius; Ikhlas, Zaitul; Natsir, Asmuddin; Hidayat, Rahmat; Ginting, Nurzainah; Yanti, Gusri; Rosani, Urip; Mohd-Aris, Aslizah; Hidayat, M. Zhorif; Fitri, Yelly; Sucitra, Laras Sukma; Utami, Bella Veliana
Andalasian Livestock Vol. 2 No. 2 (2025): ALive
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/alive.v2.n2.p170-177.2025

Abstract

This study aims to evaluate the effect of supplementing ruminant feed with gambir leaf extract (Uncaria gambir Roxb.) from Pangkalan, West Sumatra, as a natural feed additive on the in vitro digestibility of crude fat, crude fiber, and nitrogen-free extract (NFE). The study used a completely randomized design with four treatments: T0 (control, without extract), T1 (0.5% gambir extract), T2 (1% gambir extract), and T3 (2% gambir extract). The parameters observed included crude fat, crude fiber, and NFE digestibility. The results showed that gambir leaf extract supplementation had a significant effect (P<0.05) on all parameters tested. Treatment T3 provided the highest digestibility values, namely crude fat 66.47%, crude fiber 66.45%, and NFE 67.99%, compared to the control (64.17%, 64.52%, and 65.70%). This increase is thought to be due to the bioactive content of gambir extract, namely tannins (64.84%), catechins (60.11%), and saponins (0.96%), which work synergistically to modulate rumen microbes, protect nutrients from excessive degradation, and increase fermentation efficiency. In conclusion, gambir leaf extract from Pangkalan has the potential to be a natural feed additive that improves nutrient digestibility in ruminants. These results support utilizing local phytochemical-based resources for feed efficiency and sustainable livestock farming.
Peningkatan Biodegradabilitas dan Penyerapan Air Akibat Penambahan Mikroselulosa Hasil Isolasi Tandan Kosong Kelapa Sawit dalam Bioplastik Sitorus, Berlian; Novianti, Icha; Adhitiyawarman; Antonius
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 2 (2023): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i2.52469

Abstract

Bioplastik adalah jenis bahan yang cakupannya luas, meliputi plastik berbasis bio (bio-based) tetapi tidak harus biodegradabel ataupun plastik berbahan dasar petrokimia dan bio yang dianggap bersifat biodegradable. Penggunaan bioplastik diharapkan dapat mengurangi pencemaran lingkungan yang diakibatkan sampah plastik konvensional. Namun seringkali sifat fisik dari bioplastik belum sesuai dengan yang diinginkan, sehingga perlu ditingkatkan, misalnya dalam hal kekuatan mekanik. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan mikroselulosa hasil isolasi dari tandan kosong kelapa sawit terhadap sifat bioplastik komposit dari PVA-selulosa-asam sitrat-pati-gliserol. Adapun tahapan metode yang dilakukan: preparasi serat, delignifikasi, hidrolisis asam, pembuatan film tipis bioplastik, serta karakterisasi mikroselulosa dan plastik yang dihasilkan. Mikroselulosa hasil isolasi memiliki derajat kristalinitas 39% dan diameter serat ± 8,5 μm. Bioplastik dengan lima variasi penambahan massa mikroselulosa: masing-masing diuji kekuatan mekanik, biodegradabilitas dengan metode soil burial test, dan penyerapan air. Hasil pengujian menunjukkan pengaruh penambahan mikroselulosa terhadap bioplastik, yaitu dalam hal peningkatan kekuatan tarik dari bioplastik menjadi 7 - 8 MPa dan persen elongasi 10-16%. Biodegradabilitas dan penyerapan air dari bioplastik semakin tinggi seiring dengan penambahan jumlah mikroselulosa dalam bioplastik.
Analisis Pengujian Sorptivity Pada Mortar Geopolimer Abu Sawit Dengan Substitusi Portland Composite Cement Syarif, Harriad Akbar; Antonius; Prabowo Setiyawan
Aptek Jurnal Apliksai Teknologi (APTEK): Volume 16, No. 02, Juni 2024
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/aptek.v16i2.2497

Abstract

Penelitian ini membahas tentang mortar geopolimer dengan abu sawit sebagai bahan pengikat. Larutan alkali aktivator yang digunakan untuk proses pengaktifan unsur Silika dan Alumina yang terdiri dari larutan larutan Na2SiO3 2,3 Mol (Be 52) dan NaOH 14M. Perencanaan campuran mortar geopolimer abu sawit mengunakan semen (Portland Composite Cement/PCC) sebagai bahan substitusi 10%, 20%, 30% berat terhadap berat abu sawit yang berguna untuk mempercepat proses ikatan polimerisasi. Untuk itu dilakukan pengujian sorptivity pada 28 hari dengan benda uji yang digunakan berbentuk kubus 5x5x5 cm. Hasil penelitian menunjukkan bahwa larutan alkali dengan nilai rasio Na2SiO3 dan NaOH sebesar 2 dan rasio alkali aktivator dan abu sawit sebesar 1,6 mengasilkan workability yang baik untuk adukan mortar. Sehingga perencanaan campuran ini digunakan untuk membuat sampel mortar dengan proses perawatan menggunakan suhu ruang, Pengujian sorptivity mortar geopolimer abu sawit tergolong sorptivity baik karena <0,2 mm/min0,5 pada variasi semen 30% pada umur 28 hari. Hasil ini menyimpulkan bahwasanya material mortar geopolimer abu sawit memiliki kemampuan yang baik untuk menyerap dan mengalirkan air melalui pengisapan kapiler yang berhubungan dengan meningkatnya kuat tekan pada mortar.
Analisis Penggunaan Fly Ash Tipe F pada Beton Non Pasir sebagai Green Concrete Purnamasari, Eka; Antonius; Setiyawan, Prabowo
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 11 No 1 (2025): Februari
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/st.vol11.no1.a19194

Abstract

The use of concrete as a construction material has become an industry standard; however, excessive exploitation of natural sand has had a negative impact on the environment. No-fines concrete has emerged as an innovative alternative to reduce dependence on sand, offering advantages such as a porous structure that enhances permeability and thermal insulation. This study analyzes the use of Type F Fly Ash, a byproduct of coal combustion from the Asam-Asam Power Plant in South Kalimantan, as an additive in no-fines concrete to improve its mechanical properties and durability. Fly Ash acts as a pozzolanic material, which can partially replace cement and enhance compressive strength and resistance to extreme environmental conditions. The research was conducted through a literature review and cement and Fly Ash testing. The results indicate that the increase in Fly Ash content affects the cement hydration reaction, necessitating the selection of an appropriate dosage tailored to specific construction project needs. The incorporation of Type F Fly Ash enhances ecological sustainability and concrete efficiency, while simultaneously reducing industrial waste and the environmental impact of cement production. Therefore, no-fines concrete based on Fly Ash presents a sustainable solution for environmentally friendly infrastructure development.
Pengaruh Solvabilitas, Profitabilitas, Dan Likuiditas Terhadap Nilai Perusahaan Dengan Kepemilikan Manajerial Sebagai Variabel Intervening Kurniawan; Fauzan, Muhammad; Antonius
Jurnal Audit dan Perpajakan (JAP) Vol. 1 No. 2 (2021): Artikel Penelitian Desember 2021
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/jap.v1i2.2024

Abstract

Perusahaan memiliki tujuan agar operasional bisnisnya dapat berjalan dengan baik dan dapat berjalan dalam jangka waktu yang panjang serta memperoleh keuntungan semaksimal mungkin dari operasional bisnis yang sedang dijalankan. Penelitian ini bertujuan untuk mengetahui apakah ada pengaruh solvabilitas, profitabilitas, dan likuiditas terhadap nilai perusahaan dengan kepemilikan manajerial sebagai variabel intervening. Perusahaan yang diteliti adalah perusahaan sektor farmasi yang listing di Bursa Efek Indonesia (BEI) tahun 2018-2020. Penelitian ini merupakan penelitian kuantitatif. Populasi dalam penelitian ini adalah perusahaan farmasi dan metode sampel dengan menggunakan purposive sampling. Teknik analisis data yang digunakan meliputi analisis jalur (path analysis), pengujian hipotesis, dan analisis koefisien determinasi (????²) dengan menggunakan program SPSS Versi 25.00.
ANTICIPATION AND SOLUTION OF EQUIPMENT COST OVERRUN FACTOR IN TOLL ROAD CONSTRUCTION PROJECT Isfahani, Muhammad Nafhan; Antonius; Wibowo, Kartono
JURNAL TEKNIK SIPIL-ARSITEKTUR Vol. 24 No. 1 (2025): EDISI BULAN MEI 2025
Publisher : FTSP Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54564/jtsa.v24i1.222

Abstract

Makalah ini memaparkan hasil penelitian tentang antisipasi dan solusi penanganan kelebihan biaya material pada proyek jalan tol sistem terbuka di Jadebotabek. Tujuan dari penelitian ini adalah untuk mengetahui antisipasi dan solusi penanganan kelebihan biaya material. Penelitian ini dilakukan dengan melakukan survei kepada 76 responden yang terdiri dari Manajer, Konsultan dan Kontraktor yang terlibat dalam pembangunan jalan tol di Jabodetabek yang merupakan wilayah pesisir. Hasil survei tersebut diuji validitas, reliabilitas dan mean untuk mengetahui faktor dominan penyebab kelebihan biaya, selanjutnya dilakukan penyusunan antisipasi dan solusi penanganan kelebihan biaya peralatan oleh tim ahli. Hasil penelitian menunjukkan bahwa terdapat 12 faktor penyebab kelebihan biaya yang valid dengan nilai koefisien 0,385 – 0,577 dan 13 faktor penyebab kelebihan biaya yang reliabel dengan nilai cronbach’s alpha diatas 0,700. Hasil penelitian ini juga menunjukkan bahwa antisipasi dan solusi penanganan pembengkakan biaya peralatan pada proyek jalan tol pesisir adalah tindakan preventif untuk mengurangi dan menghilangkan terjadinya pembengkakan biaya pada tahap perencanaan maupun pada tahap pelaksanaan.
Interaction of Palm Fatty Acid Distillate (PFAD) and High-Tannin Mangrove Fruit Extract (Sonneratia alba) on the In Vitro Digestibility of Fiber Fractions in Dairy Cattle Feed Elihasridas; Pazla, Roni; Antonius; Yanti, Gusri; Ikhlas, Zaitul; Fitri, Yelly; Zulfadillah, Jenni; Bariva, Meiko Armanda; Subhi, Muhammad Arief; Triana, Natasya; Elfindo, Todif
Andalasian Livestock Vol. 2 No. 2 (2025): ALive
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/alive.v2.n2.p178-184.2025

Abstract

This study aimed to evaluate the interaction between Palm Fatty Acid Distillate (PFAD) and high-tannin mangrove fruit extract (Sonneratia alba) on the in vitro digestibility of dairy cattle feed fiber fractions. The experimental design used a completely randomized factorial 3×4 pattern with three replicates. The first factor was the PFAD level (0%, 3%, 6%) and the second factor was the mangrove fruit extract dose (0%, 0.5%, 1%, 2%). Fermentation was carried out using the Tilley and Terry (1963) rumen stage method using fresh goat rumen fluid. The parameters observed included the digestibility of neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose, and cellulose. The results showed that PFAD, mangrove fruit extract, and their interaction had a significant effect (P<0.05) on the digestibility of NDF and cellulose, but did not have a significant effect on ADF and hemicellulose. The combination of 3% PFAD and 0.5–1% extract provided the highest digestibility. Increasing PFAD and tannin reduced digestibility due to the fat coating effect and the formation of tannin complexes with structural carbohydrates. The combination of PFAD and mangrove tannin can be optimized as a functional feed additive based on local resources that improves rumen fermentation efficiency without reducing fiber digestibility.
Analysis of the Implementation of Law Number 4 of 2009 concerning Mineral and Coal Mining, Tax Relevance: Through a Literature Review Antonius; Al-Anshori, Huzaimah; Hasibuan, Ali Huristak Hartawan
Al-Risalah VOLUME 25 NO 2, NOPEMBER (2025)
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-risalah.vi.62004

Abstract

Indonesia’s mineral and coal mining sector continues to face persistent governance challenges, including regulatory inconsistency, limited transparency, and weak fiscal accountability. Although Law Number 4 of 2009—introducing the IUP/IUPK licensing system—was intended to strengthen state control and promote sustainable resource management, its practical outcomes remain inconsistent. Addressing the research gap on how legal reforms interact with fiscal governance, this study analyzes the implementation of the law and its taxation relevance through a systematic literature review of academic publications, official reports, and regulatory documents. Using a qualitative content analysis approach, the study identifies recurring issues such as overlapping regulations, legal uncertainty, and insufficient supervision, which undermine the expected improvements in mining governance. The results also show that the mining taxation framework—comprising income tax, VAT, land and building tax, non-tax state revenues (PNBP), and the Revenue Sharing Fund (DBH)—holds strategic importance for ensuring equitable fiscal distribution, yet suffers from low compliance and weak monitoring mechanisms. The study contributes to existing scholarship by demonstrating that effective mining governance requires not only legal reform but also coherent fiscal policy design and integrated regulatory enforcement. Practically, these findings suggest that enhancing regulatory harmonization, strengthening fiscal transparency, and improving intergovernmental coordination are essential to optimizing state revenue and ensuring that the mining sector supports long-term sustainable development.
Co-Authors AB, Nizhamuddin Abdul Rochim Abdul Rochim Adhitiyawarman, Adhitiyawarman Agung Wahyudi Biantoro Al-Anshori, Huzaimah Anisa Putri Asmuddin Natsir Bariva, Meiko Armanda Benny Suwito Berlian Sitorus Citra, Zel Elfindo, Todif Elihasridas Fitri, Yelly Haris, Aslizah Mohd. Harriad Akbar Syarif Hasibuan, Ali Huristak Hartawan Hidayat, M. Zhorif Ikhlas, Zaitul Isfahani, Muhammad Nafhan Juliana, Ahmad Kartono Wibowo, Kartono Kurniawan Lada, Suddin Lista Meria Mardiati Zain Mohd-Aris, Aslizah Muhammad fauzan Muji Bagus Prastyo Novianti, Icha Nurzainah Ginting Prabowo Setiyawan Prabowo Setiyawan, Prabowo Purnamasari, Eka Rahmat Hidayat Roni Pazla Subhi, Muhammad Arief Sucitra, Laras Sukma Triana, Natasya Urip Rosani Utami, Bella Veliana Yanti, Gusri Yogi Oktopianto Zulfadillah, Jenni