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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 63 Documents
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Synthesis of New Phosphine-Containing Hg Complexes Derived from 2-Thiouracil and Evaluation of Their Biological Activity Mohammed, Lubna Waleed; Mohammed, Sabah Farhan; Sulaiman, Maha Mohammed; Saleh, Mohammed Jwher; Saleh, Jamil Nadhem; Ali, Marwan Hasan
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.
Assessment Oxidative Stress and Antioxidants in Hypothyroidism Patients Before and After Treatment Ali_Samarrai, Nuha Ali Hadi; Zanzal, Rana Raad; Wasmi, Mays Subhi
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.v2i4.465

Abstract

Thyroid hormones influence the majority of bodily functions by directly impacting various physiological processes and the operation of numerous tissues. They are essential for the operation of other hormones. Aim of the study : Assessment level of glutathione (GSH), glutathione peroxidase (GSH-PX), and malondialdehyde (MDA), ,Thyroxine (T4) and triiodothyronine (T3),and lipid profile in hypothyroidism women before and after treatment with levothyroxine. Materials and methods: 60 patients (before and after taking Levothyroxine treatment) and 30 control group were selected for the study. The study sample was selected from (15-54) years for the period from the end of September 2024 to the beginning of March 2025. The peak age of women with hypothyroidism was between (35-54) years, and its percentage reached 40%. Samples were taken from people who visit specialists in outpatient clinics and health centers in Samarra city. Result: The serum levels of GSH, GSH-PX, and MDA in hypothyroid patients before and after treatment were significantly distinct from those in the control group (p < 0.001). The lipid profiles, including total cholesterol, triglycerides, low-density lipoprotein (LDL) cholesterol, and high-density lipoprotein (HDL) cholesterol, in the serum of hypothyroid patients exhibited significant differences from those of the control group before and after treatment (p = 0.01). Thyroid hormone levels (TSH, T3, and T4) exhibited a substantial rise (p < 0.01) in the serum of hypothyroid patients pre- and post-treatment in comparison to the control group. Conclusion: The current study concluded increase MDA in patient with hypothyroidism before treatment, while decrease after treatment. In contrast decrease both GSH, GSH-PX, and HDL in in patient with hypothyroidism before treatment, while increase after treatment
The Application of Lean Construction uses the Borda Method and the Root Cause Analysis Method (Case Study: Sunrise Mall 2 Construction) Rahadian, Reza; Putra, I
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.v2i4.521

Abstract

The construction industry often faces challenges such as delays, cost overruns, and waste. This research aims to improve the efficiency of mall construction projects using lean construction principles. The methods applied include borda method for prioritization, pareto method for identification of the dominant cause of the problem, root cause analysis (RCA) method to analyze the root of the problem and fishbone diagram to visualize the root cause of the problem. The case study was conducted on an ongoing mall construction project. Data were collected through field observations, interviews with relevant parties, and analysis of project documents. The results show that the application of the borda method helps identify the factors that have the most influence on project efficiency, the pareto method focuses attention on 20% of the main causes of problems that contribute 80% to inefficiency, and the RCA method uncovers the underlying root causes. Based on the calculation results, it was found that the most common waste parameter and their sub-parameter were overprocessing with the sub-parameter “Repair”; overproduction with the sub-parameter “Design change”; motion with the sub-parameter “No special storage”; defects with the sub-parameter “Suitability/adequacy of heavy equipment used” waiting with the sub-parameter “Delay in material arrival at project site”.
Nonlinear Angular and Polarization-Dependent Reflectance Sensitivity in MAPbI₃ Thin-Film Structures: Thickness-Tuned TiO₂ Interlayer Effects Lateef, Abdullah
Physical Sciences, Life Science and Engineering Vol. 3 No. 1 (2025): December
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v3i1.609

Abstract

This study presents a theoretical investigation of the angular and polarization-dependent reflectance sensitivity of MAPbI₃-based thin-film structures using the Transfer Matrix Method (TMM). Two configurations were considered: a single-layer structure and a bilayer structure incorporating a TiO₂ interlayer . The analysis was performed within the 300–800 nm spectral range under oblique incidence conditions. The results show that the reflectance sensitivity exhibits a clear nonlinear dependence on the angle of incidence. Under TE polarization, the sensitivity increases significantly with angle and reaches its maximum at 60°, indicating strong angular amplification driven by interference-induced phase modulation. In contrast, TM polarization demonstrates a gradual reduction in sensitivity, accompanied by a sign reversal at higher angles due to impedance matching effects near Brewster-related conditions. The introduction of a TiO₂ interlayer preserves the overall angular trend while enabling moderate structural tuning. Thickness optimization reveals polarization-dependent optimal values, with peak TE sensitivity obtained near 80 nm and peak TM sensitivity around 50 nm. However, quantitative comparison between single- and bilayer configurations confirms that angular control plays a more dominant role in sensitivity enhancement than thickness adjustment alone. Overall, the findings highlight the effectiveness of polarization-engineered angular modulation as a practical approach for enhancing reflectance-based sensing performance in perovskite multilayer systems, offering simplified design guidelines for angle-selective photonic coatings and optical sensors.
Desain Ilustrasi Atlet Olahraga Berbasis Digital Dengan Format 2 Dimensi Hanif Amrullah; Suprianto
Physical Sciences, Life Science and Engineering Vol. 3 No. 1 (2025): December
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v3i1.643

Abstract

Penelitian ini mengkaji proses desain ilustrasi digital dua dimensi (2D) untuk atlet olahraga, menjawab kelangkaan riset akademis di bidang ini. Dengan pendekatan kualitatif deskriptif, studi ini menganalisis metode dan pertimbangan visual melalui studi literatur dan referensi kontemporer. Proses desainnya mencakup pengumpulan data, penggunaan ilustrasi vektor, serta pemilihan pose dan ekspresi yang dinamis. Hasil desain akan dievaluasi oleh target pengguna (seperti pelatih dan atlet) melalui kuesioner dan wawancara untuk mengukur pemahaman, daya tarik visual, dan kesesuaiannya untuk tujuan promosi atau edukasi.
Optimasi Perawatan Angkutan Kota dengan Menggunakan Metode Reliability Centered Maintenance (RCM) Achmad Amin; Indah Wulandari
Physical Sciences, Life Science and Engineering Vol. 3 No. 1 (2025): December
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v3i1.645

Abstract

Armada angkutan kota di Kabupaten Pasuruan, khususnya dengan kode G3, sering mengalami kerusakan yang berdampak pada penurunan waktu operasional dan pendapatan pengemudi. Penelitian ini bertujuan untuk mengidentifikasi komponen mesin yang paling sering mengalami kegagalan dengan menggunakan metode Failure Mode and Effect Analysis (FMEA) serta menghitung biaya perawatan dan perbaikan dengan menggunakan metode Reliability Centered Maintenance (RCM). Hasil analisis menunjukkan bahwa komponen Platina merupakan bagian paling kritis dengan nilai Risk Priority Number (RPN) tertinggi sebesar 384. Biaya perbaikan total komponen ini tercatat sebesar Rp172.813, sedangkan biaya perawatan preventif hanya Rp105.781. Dengan demikian, penerapan perawatan preventif efektif dalam menekan kerusakan dan mengurangi biaya hingga 10%.
Analisis Potensi Kecelakaan Kerja Pada Departemen Produksi Divan Dengan Metode Hazard Identification and Risk Assessment (HIRA) Okky Fernando; Boy Putra
Physical Sciences, Life Science and Engineering Vol. 3 No. 1 (2025): December
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v3i1.646

Abstract

Selama periode 2023-2024, produksi divan PT. XYZ mengalami penurunan produktivitas sebesar 4-10% dari target bulanan, yang disebabkan oleh tingginya frekuensi kecelakaan kerja, kondisi lingkungan yang tidak aman, serta absensi pekerja akibat cedera dan gangguan kesehatan. Berdasarkan catatan pengawas, terdapat 17 kasus kecelakaan mayor dan minor dalam proses produksi divan. Tujuan dilakukannya penelitian ini adalah untuk: (1) Mengidentifikasi dan memprioritas potensi kecelakaan kerja pada departemen produksi divan. (2) Memberikan rekomendasi pengendalian risiko guna mencegah kecelakaan kerja pada produksi divan. Penelitian ini menggunakan metode Hazard Identification and Risk Assessment (HIRA) untuk menganalisis dan mengidentifikasi tingkat risiko kecelakaan berdasarkan keparahan dan kemungkinan terjadinya. Hasil penelitian ini menunjukkan 17 potensi kecelakaan kerja terdeteksi pada 17 tahap proses kerja. Terdapat dua prioritas utama kecelakaan kerja yaitu jari tersayat dengan nilai risk score 15 dan jari terpotong dengan nilai risk score 20. Rekomendasi yang diusulkan dalam pengendalian potensi kecelakaan kerja prioritas antara lain pengendalian administratif berupa pelatihan kepada operator tentang teknik pengoprasian mesin dengan benar, menetapkan SOP yang jelas terkain penggunaan mesin, dan perawatan mesin secara berkala serta pengendalian alat perlindungan diri berupa penggantian sarung tangan kain ke sarung tangan  nitril. Dengan implementasi pengendalian ini tingkat risiko kecelakaan kerja dapat diminimalkan, sehingga menciptakan lingkungan kerja yang lebih aman dan produktif.
Analisis Total Faktor Produktivitas dan Usulan Perbaikan dengan Penerapan Metode OMAX dan FTA Muhammad Ardana; Indah Wulandari
Physical Sciences, Life Science and Engineering Vol. 3 No. 1 (2025): December
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v3i1.647

Abstract

Penelitian ini menganalisis produktivitas perusahaan jasa dan manufaktur yang beroperasi di bidang konsultasi, desain, fabrikasi, dan instalasi. Dalam periode September 2023 hingga Agustus 2024, perusahaan hanya mampu menyelesaikan 78% pesanan yang berujung pada ketidakpuasan pelanggan serta penurunan jumlah pesanan. Penelitian ini bertujuan menghitung total faktor produktivitas dengan Objective Matrix (OMAX) dan menganalisis faktor penyebab penurunan produktivitas menggunakan Fault Tree Analysis (FTA). Hasil perhitungan OMAX menunjukkan total produktivitas sebesar 47 dengan indeks 25,79%, di mana jumlah mesin menjadi faktor utama yang mempengaruhi kinerja operasional. Sementara itu, analisis FTA mengungkap berbagai akar permasalahan, termasuk sparepart yang tidak tersedia, ketidaksesuaian jadwal maintenance, operator yang tidak terlatih, serta faktor eksternal seperti permintaan pesanan mendadak, perubahan jadwal produksi, tingginya biaya mesin, keterbatasan supplier, dan waktu pengiriman yang lama. 
Identifikasi Risiko Kerja Pada Proses Produksi Kaleng Menggunakan Metode HIRADC dan RCA Juwanda Saputri; Boy Putra
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.v2i4.648

Abstract

Setiap pekerjaan memiliki potensi untuk menimbulkan risiko kecelakaan kerja yang dapat berasal dari proses yang sedang berlangsung, kelalaian pekerja, atau kondisi pabrik. Berdasarkan hasil observasi di area proses produksi kaleng PT. XYZ dan wawancara dengan sejumlah karyawan, terdapat 25 kasus kecelakaan kerja yang terjadi, disertai berbagai risiko kecelakaan kerja dan insiden yang teridentifikasi, baik dalam proses produksi maupun di lingkungan kerja. Hal ini mencerminkan 25% dari target zero accident. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis risiko keselamatan kerja pada proses produksi kaleng di PT. XYZ menggunakan metode Hazard Identification, Risk Assessment, and Determining Control (HIRADC) dan Root Cause Analysis (RCA). Berdasarkan hasil analisis, ditemukan tiga potensi bahaya dengan tingkat risiko tinggi pada tahap produksi printing, yang berpotensi menyebabkan kebakaran, luka bakar, gangguan pernapasan, serta iritasi kulit pada operator. Untuk mengatasi permasalahan ini, dilakukan analisis lebih lanjut menggunakan fishbone Diagram dan 5 whys analysis guna mengidentifikasi akar penyebab kecelakaan kerja. Hasil analisis menunjukkan bahwa faktor utama yang berkontribusi terhadap kecelakaan kerja adalah kurangnya kebijakan keselamatan, minimnya pelatihan pekerja, serta ketidakseimbangan antara efisiensi biaya dan keselamatan. Oleh karena itu, diusulkan strategi perbaikan menggunakan metode 5W1H, seperti penerapan kebijakan Keselamatan dan Kesehatan Kerja (K3), peningkatan pelatihan rutin, audit keselamatan berkala, serta penerapan teknologi keselamatan seperti thermocontrol. Setelah implementasi tindakan pengendalian, risiko tinggi berhasil diturunkan ke tingkat yang lebih rendah. Penelitian ini memberikan kontribusi bagi perusahaan dalam meningkatkan standar keselamatan kerja dan mencapai target zero accident.
Analisa Efektivitas Mesin Filling Menggunakan Metode Overall Equipment Effectiveness dan Six Big Losses Yusuf Alfari; Hana Wahyuni
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.v2i4.649

Abstract

Setiap perusahaan perlu menjaga peralatan penunjang proses produksinya. PT. XYZ merupakan perusahaan berbasis fast moving consumer good, perusahaan ini memiliki permasalahan terhadap salah satu mesin filling yang sering mengalami kegagalan proses yang mengakibatkan waste. Tujuan penelitian ini yaitu menganalisa tingkat efektivitas mesin dengan metode overall equipment effectiveness dan mengidentifikasi faktor yang mempengaruhi efektivitas dengan identifikasi six big losses serta mengembangkan strategi untuk mengatasi hal tersebut. Hasil perhitungan OEE selama periode enam bulan menunjukkan nilai sebesar 73,748% dimana nilai tersebut belum mencapai standar efektivitas peralatan produksi. Identfikasi rendahnya nilai efektivitas menunjukkan bahwa losses terbesar berasal dari kerugian akibat kerusakan mesin dengan nilai losses sebesar 9,389% dan kerugian akibat peralatan beroperasi dibawah kecepatan standarnya dengan nilai losses sebesar 6,770%. Maka strategi yang perlu dilakukan meliputi melakukan perbaikan terhadap pencapit puch, sensor filling, dan bagian sealer, serta melakukan langkah planned maintenance dan focussed improvement maintenance.

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