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Physical Sciences, Life Science and Engineering
Published by Indonesian Journal Publisher
ISSN : -     EISSN : 30319021     DOI : https://doi.org.10.47134/pslse
Core Subject : Humanities, Science, Social, Engineering,
Humanities Engineering Physics Social Sciences
Explore the Physical Sciences, Life Science and Engineering. This section accommodates research papers that aim to present the practical aspects of certain theoretical hypotheses reflected through empirical approach to problemsolving, systematic methodology that guarantee the validity of research results, expert opinions, sophisticated utilization of devices in a variety of field of studies such as in physics, geography and engineering. Focus and Scope: Remote Sensing, Chemistry, Cartography, Geographic Information Systems, Astrophysics, Nuclear Physics, Applied Physics, Geophysics, Applied Mathematics, Environmental Science, Geology, Astronomy, Earth, Science, Aerospace, Computer Science, Applied Engineering and Material Science.
Arjuna Subject : Ilmu Sosial - Ilmu Sosial (Lain-Lain)
Articles 74 Documents
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Determination of Hydrodynamic Activity of Ground Water for Um Er Radhuma Aquifer in Al-Salman District, Southern Iraq Shahad Al-Qaraghuli
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.416

Abstract

Six wells’ samples were collected from Umm Er Radthuma aquafer distributed in the region in Al-Salman district, Al-Muthana governorate in the southern part of Iraq during November 2024 and it’s compared with four wells samples collected from the same region during year 2010. Umm Er Radhuma formation is represented the major aquifers and the type is a confined aquafer. The samples of ground water were examined for major cations and anions, PH, total dissolved solids (TDS) and electrical conductivity (EC). The hydro-chemical analysis results obtained from the examined ground water samples are generally alkaline, very hard water, classified a brackish water and the excessively mineralized water. The concentration of anions and cations in the water samples indicate the dominant of Sodium ion in the cations, while the sulphate was the main anion for year 2024 and chloride anion for the year 2010 with increase all the anions and cations values during 2024. The ground water wells are a continental origin except well 3 is marine origin. Therefore, Bojarski method application shows that the all-wells samples have high hydrodynamic activity so that the hydro-carbonic accumulation is a low except well 3 have a low hydrodynamic activity and the hydrocarbon accumulations were high effect. The water type according to Kurolov formula is Na2SO4 in the most wells except well 3 is NaCl. The ground water of Al- Salman region has indicated that the sulphate group is dominated
Analysis of Potential Work Hazard Risk in the Development of the Road Project Using the HIRARC and FTA Methods Manurung, Liza Olivia; Putra, I Nyoman Dita Pahang; Widowati, Elok Dewi
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.417

Abstract

Risk refers to a situation with potential loss or the chance of a loss. Every stage in the construction process inevitably carries potential risk hazards that can threaten the safety of workers, the environment, and the surrounding community. Therefore, a study was conducted to analyse possible risks during mobilising heavy equipment and material vehicles, excavation and embankment work, and blasting work in the X Road construction project.  This study employed two methods for risk analysis. The first method involved identifying types of work-related accidents using the HIRARC approach, which included distributing questionnaires to assess each variable's likelihood and severity levels to determine the most significant risk. Then, control measures were applied to the identified risks. After implementing the control measures, a risk reassessment was conducted to assess the level of risk post-control. The identification revealed one dominant variable: heavy equipment overturning from a height. Thus, the analysis continued using the second FTA method to determine the causal factors influencing the risk. The risk was caused by three main factors: human, environmental, and managerial factors, and ten basic events leading to the risk were identified.
Transformasi Energi Hijau: Studi Implementasi Pembangkit Listrik Tenaga Surya di Kampus “X” Evelyn Agustin; Daniel Marcello; Jonathan Oktavianus; Theresa Alycia Tambunan; Gabriella Angelica Chrisyanto; Vito Kennedy; Gres Merita Amay Herianti
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.424

Abstract

Penelitian ini bertujuan untuk menganalisis potensi, efisiensi, dan dampak lingkungan dari penerapan Pembangkit Listrik Tenaga Surya (PLTS) di kampus “X” sebagai sumber energi alternatif yang ramah lingkungan. Metode yang digunakan dalam studi ini adalah analisis data sekunder yang diperoleh dari studi literatur, pengamatan terhadap sistem PLTS, serta pembandingan dengan penggunaan listrik konvensional dari PLN. Hasil penelitian menunjukkan bahwa integrasi PLTS dengan sistem listrik PLN menghasilkan penghematan rata-rata sebesar 35% per bulan terhadap biaya listrik. Dari sisi emisi, PLTS menghasilkan sekitar 4.500 kg CO₂/kWh per bulan, jauh lebih rendah dibandingkan listrik PLN yang mencapai lebih dari 21.000 kg CO₂/kWh pada bulan yang sama. Sementara dari sisi biaya operasional selama enam bulan, PLTS hanya mengeluarkan Rp 680.000, dibandingkan dengan listrik PLN yang mencapai Rp 40.183.990. Meskipun investasi awal PLTS sebesar Rp 18.550.000 cukup tinggi, dalam jangka panjang teknologi ini terbukti lebih hemat dan ramah lingkungan. Kesimpulannya, PLTS merupakan solusi energi yang efisien, ekonomis, dan mendukung pengurangan emisi karbon di lingkungan kampus
Meningkatkan Akurasi Penetapan Biaya Produksi: Studi Kasus Perbandingan Job Costing dan ABC pada UMKM Pempek Lena Evelyn Agustin; Seli; Daniel Marcello; Indra Wijaya; Jean Josh Hung; Andres Christian Aritonang; Sela; Joheri Fransiski
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.425

Abstract

Penelitian ini bertujuan untuk membandingkan perhitungan Harga Pokok Produksi (HPP) pada UMKM Pempek Lena menggunakan metode Job Costing dan Activity-Based Costing (ABC). Metode penelitian yang digunakan adalah pendekatan kuantitatif deskriptif dengan pengumpulan data melalui observasi, wawancara, dan dokumentasi. Hasil menunjukkan bahwa metode Job Costing menghasilkan HPP yang lebih sederhana, seperti Pempek Kapal Selam sebesar Rp6.750, sedangkan metode ABC menghasilkan HPP lebih akurat, seperti Rp7.150 untuk produk yang sama. Kesimpulannya, metode ABC lebih tepat untuk menggambarkan konsumsi biaya yang sebenarnya dan direkomendasikan bagi UMKM dalam pengambilan keputusan biaya
Analisis Beban Kerja Fisik Pada UMKM Kemplang “X” Menggunakan Metode CVL Heri Setiawan; Jonathan Oktavianus; Ceria Andini Saing; Ria Wulandari; Muhammad Athallah Ghibrandi; Gabriella Shany Tetalonika Galingging; Maria Tiara Maythree Poernomo
Physical Sciences, Life Science and Engineering Vol. 2 No. 2 (2025): March
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i2.426

Abstract

Penelitian ini bertujuan untuk menganalisis beban kerja fisik pada pekerja di UMKM Kemplang "X" menggunakan metode Cardiovascular Load (CVL). Metode ini digunakan untuk mengetahui tingkat pembebanan kerja berdasarkan respon denyut jantung pekerja selama beraktivitas. Data dikumpulkan melalui pengukuran denyut nadi saat kerja dan saat istirahat pada lima orang pekerja bagian produksi. Hasil analisis menunjukkan bahwa nilai %CVL pekerja berada dalam rentang 35,45% hingga 38,46%, dengan rata-rata sebesar 36,45%. Nilai tersebut termasuk dalam kategori pembebanan sedang, yang berarti kondisi kerja masih layak namun memerlukan perbaikan agar tidak menimbulkan kelelahan jangka panjang. Analisis lebih lanjut menggunakan diagram fishbone menunjukkan bahwa pembebanan kerja disebabkan oleh faktor manusia (istirahat tidak teratur), metode kerja (masih manual), mesin (alat tradisional), dan lingkungan (suhu tinggi). Berdasarkan hasil tersebut, diusulkan beberapa perbaikan seperti penjadwalan istirahat yang teratur, penggunaan alat bantu, penerapan teknologi tepat guna, serta perbaikan ventilasi ruangan. Diharapkan usulan ini dapat menciptakan lingkungan kerja yang lebih ergonomis dan mendukung produktivitas kerja yang optimal
Analisis Intensitas Cahaya Pada Area Produksi Terhadap Kenyamanan dan Efektivitas Kerja Sesuai Dengan Standar Pencahayaan Heri Setiawan; Crisantus Abel Cato Hutajulu; Vincensius Dika Ivanda; Wahyuni Tesy Anggara; Adrian Tanaka; Damian Bactiar Situmorang; Jovanda Tri Wardana
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.428

Abstract

Penelitian ini bertujuan untuk menganalisis intensitas pencahayaan di area produksi PT. Kerupuk XYZ dan menilai kesesuaiannya dengan standar pencahayaan kerja berdasarkan SNI 16-7062-2023. Metode yang digunakan meliputi pengukuran langsung menggunakan lux meter digital serta observasi kondisi distribusi cahaya di delapan area kerja, seperti pengadonan, pencetakan, penggorengan, pengemasan, gudang, ruang istirahat, dan area penerimaan bahan baku. Pengukuran dilakukan saat kondisi kerja normal dan dibandingkan dengan standar yang berlaku. Hasil penelitian menunjukkan bahwa tiga area memiliki pencahayaan di bawah standar (pengadonan, penggorengan, dan gudang), satu area memiliki pencahayaan berlebih (ruang istirahat), dan empat area telah sesuai standar. Kesimpulan dari penelitian ini menegaskan pentingnya evaluasi dan perbaikan sistem pencahayaan untuk mendukung efektivitas kerja dan kenyamanan visual karyawan
Analisis Kenyamanan Ergonomis Penggunaan Hydropad untuk Mengurangi Masalah Musculoskeletal pada Pengemudi Ojek Online Heri Setiawan; Callysta Aurelia; Thomas Prasetyo; Ferdianto Mandola; Shella Mobry; Wahyu Hidayat
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.430

Abstract

Pekerjaan sebagai pengemudi ojek online di Indonesia sering menimbulkan keluhan musculoskeletal akibat duduk dalam waktu lama tanpa dukungan postur tubuh yang baik. Penelitian ini bertujuan untuk menganalisis efektivitas penggunaan hydropad sebagai alat bantu duduk ergonomis dalam mengurangi keluhan fisik dan meningkatkan kenyamanan pengemudi. Metode yang digunakan adalah quasi-experimental dengan desain pre-test dan post-test tanpa kelompok kontrol. Tiga pengemudi ojek online dipilih sebagai responden menggunakan teknik purposive sampling. Instrumen penelitian meliputi kuesioner Nordic Body Map (NBM) dan skala kenyamanan berbasis Likert. Intervensi berlangsung selama 14 hari, dan data dianalisis menggunakan paired t-test. Hasil penelitian menunjukkan penurunan skor keluhan musculoskeletal dari rentang 7–9 menjadi 3–5, serta peningkatan skor kenyamanan dari 2–3 menjadi 4–5. Hydropad terbukti efektif dalam mendistribusikan tekanan tubuh secara merata, meredam getaran, dan meningkatkan postur duduk. Kesimpulannya, hydropad berpotensi menjadi solusi ergonomis yang mendukung kesejahteraan kerja pengemudi ojek online.
Efficiency Analysis of the Combination of Heavy Equipment Use in Excavation and Landfill Work in Road Construction Projects Usman Hadianto; I Nyoman Dita Pahang Putra
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.438

Abstract

An efficient heavy equipment management system is needed to complete a earthwork on time. This study aims to analyze the productivity and efficiency of the combination of heavy equipment used in excavation and heap work. Heavy equipment productivity is calculated based on cycle time in the field and its needs are calculated based on the volume of the weekly plan. After that, an efficient combination of heavy equipment planning is carried out for excavation and heaping work. The method of calculating heavy equipment needs uses a theoretical approach, with cycle time adjustments based on operational conditions in the field. Efficiency analysis and heavy equipment selection are carried out based on the idle time of the smallest heavy equipment. The Optimal cut-fill Pairing and Sequencing (OPS) method is used to create a scheme of excavation and heaping work. The results of the analysis showed that the most efficient combination of heavy equipment used in excavation work of 14,467.66 BCM every week was 4 units of Kobelco PC 200 excavators, 2 units of Kobelco SK 330 excavators, and 10 units of Hino 500 dump trucks. Meanwhile, in the backfill work of 5,423.96 CCM every week, 1 unit of Komatsu D68ESS bulldozer, 1 unit of Sakai SV512TF sheepfoot roller, and 1 unit of Sakai vibro roller SV512TF are needed. This combination is chosen based on the value of the smallest idle time. With proper planning, high work efficiency, operational cost savings, and project completion are achieved according to the set schedule
Shortening Estimate and Structural Styles Interpretation In the Zagros Belt-Northeast of Iraq Ali Mousa; Ahmed Hasan
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.455

Abstract

This study emphasizes how crucial it is to combine kinematic modeling, structural restoration, and seismic interpretation in order to comprehend the tectonic evolution of the Zagros FTB. The results shed light on the migration and storage of hydrocarbons, highlighting the impact of different stress regimes and deep-seated underlying structures on the petroleum systems in the area. We present the first regionally balanced reconstructed cross-section of the Zagros fold belt in northeastern Iraq, along with a two-dimensional kinematic model that shows how the belt has changed over time in the study area. Multiple Lower Triassic detachments are identified, detached above the ductile basement level, and intermediate detachments that may have caused internal complexities such as adaptive bending and/or asymmetric folding, and it suggests that the cross-section may have produced low-angle bends at the transition from brittleness to ductility, associated with the two main structural phases of the detachment level in the high and low fold zones. Different stratigraphic units exhibit differing degrees of shortening, according to balanced cross-section analysis; the Oligocene and Eocene units have the greatest shortening (8.14%). Multi-detachment folds, thrust propagation, and a heterogeneous strain distribution are characteristics of the deformation that are associated with uplift and regional compression in the basement. Hydrocarbon entrapment is significantly influenced by key structural features like the Kalar-Kirkuk Thrust (KKT), whereas exploration possibilities are impacted by differential erosion and subsidence.
Synthesis of New Phosphine-Containing Hg Complexes Derived from 2-Thiouracil and Evaluation of Their Biological Activity Lubna Waleed Mohammed; Sabah Farhan Mohammed; Maha Mohammed Sulaiman; Mohammed Jwher Saleh; Jamil Nadhem Saleh; Marwan Hasan Ali
Physical Sciences, Life Science and Engineering Vol. 2 No. 4 (2025): September
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i4.462

Abstract

The study involved the formation of several new mercury complexes by reacting 2-thiouracil with mercury chloride and sodium hydroxide to yield the mercury complex L1. This reaction was considered the basis for preparing other complexes, as it reacts with two moles of triphenylphosphine (PPh3) to form complex L2, and through the reaction of complex L1 with bis(diphenylphosphanyl)methane (dppm) to create complex L3, and with 1,2-bis(diphenylphosphanyl)ethane (dppe) to form complex L4, and with 1,3-bis(diphenylphosphanyl)propane (dppp) to form complex L5. The validity of the prepared complexes was confirmed through spectral measurements, including the infrared spectrum and the proton and phosphorus nuclear magnetic resonance spectra. The presence of new bands in the infrared spectrum, such as the (Hg-N) and (Hg-O) bands, provided evidence of a bond. Mercury with thiouracil as between the bands belonging to (P-Ph) and (C-P), proof of the association of phosphine with the metal, and between the 1H-NMR spectrum, there are signals belonging to the benzene ring in phosphine, and this was confirmed by their complements, which were identical to the protons of the benzene rings. Between the 31P-NMR spectrum, there is a single signal indicating that the association is double in phosphine with the presence of one isomer of the complexes. The effectiveness of the prepared complexes was tested on two types of bacteria, positive and negative, using the antibiotic amoxicillin as a control sample. The confounders showed a direct relationship with the concentration, and the L2 complex showed the highest effectiveness against the two types of bacteria studied.

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