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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Teknik Industri Jurnal Kriminologi Indonesia Zuriat Edukasi Kultura Jurnal Riset Kimia JITPI : Jurnal Ilmu Dan Teknologi Peternakan Indonesia (Indonesian Journal of Animal Science and Technology) Jurnal Riset Kesehatan Poltekkes Depkes Bandung Jurnal Pendidikan Ilmu Pengetahuan Sosial (JPIPS) Jurnal DIALEKTIKA : Jurnal Ilmu Sosial Jurnal Teknik Informatika Sehat Rakyat: Jurnal Kesehatan Masyarakat Jurnal Riset sosial humaniora, dan Pendidikan (Soshumdik) Jurnal Penelitian Journal of Applied Accounting Edulead Holistik Analisis Nexus Jurnal Intelek Insan Cendikia Jurnal Manajemen Kesehatan dan Keperawatan An Nafi’; Multidisciplinary Science Jurnal Pengabdian Cendekia Aksi Kita: Jurnal Pengabdian Kepada Masyarakat Jurnal Jurisprudence
Muhamad Iqbal
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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KARAKTERISTIK MEKANIK DAN STRUKTUR MIKRO KOMPOSIT POLYESTER BERPENGUAT SABUT KELAPA UNTUK APLIKASI SPORT SCREEN VESPA Muhamad Iqbal
Holistik Analisis Nexus Vol. 3 No. 1 (2026): Januari 2026
Publisher : PT. Banjarese Pacific Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62504/han1433

Abstract

Pengembangan material komposit berbasis serat alam menjadi pendekatan strategis dalam mendukung keberlanjutan industri otomotif melalui pemanfaatan sumber daya terbarukan. Penelitian ini bertujuan untuk menganalisis pengaruh variasi fraksi volume serat sabut kelapa yang dikombinasikan dengan fiberglass terhadap sifat mekanik dan struktur mikro komposit bermatriks polyester, serta mengevaluasi kelayakannya sebagai material sport screen Vespa. Penelitian dilakukan secara eksperimental dengan variasi fraksi volume serat sabut kelapa dan fiberglass. Serat sabut kelapa terlebih dahulu diberi perlakuan alkali menggunakan larutan NaOH 5% dan dinetralkan dengan asam asetat 1% untuk meningkatkan adhesi serat–matriks. Spesimen komposit dibuat menggunakan metode hand lay-up untuk pengujian mekanik, sedangkan prototipe sport screen diproduksi menggunakan metode vacuum infusion. Pengujian sifat mekanik meliputi uji tarik dan uji lentur berdasarkan standar ASTM, serta analisis struktur mikro menggunakan mikroskop optik. Hasil penelitian menunjukkan bahwa variasi fraksi volume serat berpengaruh signifikan terhadap kekuatan tarik, kekuatan lentur, dan kualitas ikatan antarmuka serat–matriks. Fraksi serat yang optimal menghasilkan distribusi serat yang lebih homogen dan meminimalkan pembentukan void. Hasil penelitian menunjukkan bahwa komposisi 10% sabut kelapa : 20% fiberglass menghasilkan performa mekanik terbaik, sehingga komposit hibrida ini berpotensi diaplikasikan sebagai material alternatif yang ringan, berkelanjutan, dan layak secara mekanis untuk komponen otomotif non-struktural seperti sport screen Vespa.
Simulation Methods and Sensitivity Testing on NPK Fertilizer Production in Warehouse Stackage Management (Case Study at Pt Pupuk Kujang) Aqmar Sulton Aulia; Muhamad Iqbal; Alfin Agung Ramadhan; Fawwaz Jannuranti; Yuanita Suliandri
Jurnal Dialektika: Jurnal Ilmu Sosial Vol. 23 No. 2 (2025): Jurnal Dialektika: Jurnal Ilmu sosial
Publisher : Pengurus Pusat Perkumpulan Ilmuwan Administrasi Negara Indonesia (PIANI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63309/dialektika.v23i2.976

Abstract

PT Pupuk Kujang, as one of Indonesia’s national fertilizer producers, faces inventory accumulation problems of NPK fertilizer in warehouses due to an imbalance between production capacity, storage capacity, and seasonal market demand. Excessive stockpiling exceeding standard storage limits, reaching up to 40 stacks, leads to increased operational costs and product damage risks of up to 20–30 percent, thereby reducing operational efficiency. This study aims to analyze the management of NPK fertilizer accumulation in warehouses and to determine optimal production scheduling and storage capacity policies through simulation methods and sensitivity analysis. The research applies a system dynamics approach using Causal Loop Diagram (CLD) and Stock Flow Diagram (SFD) models developed with AnyLogic software, complemented by supply chain simulation using SCM Globe. The study utilizes secondary data on NPK fertilizer production and distribution at PT Pupuk Kujang from 2015 to 2017. Simulation results indicate that inventory accumulation is primarily caused by inflexible production schedules that do not adequately adjust to seasonal demand fluctuations influenced by planting cycles and weather conditions. Sensitivity analysis results show that the scenario with a warehouse capacity of 25 stacks represents the most optimal condition, as it significantly reduces inventory buildup without disrupting distribution activities. This study recommends implementing more adaptive production scheduling and optimizing warehouse capacity and distribution systems to enhance operational efficiency and minimize the risk of product damage.
Mewujudkan Kesadaran Energi Melalui Konsep Khalifah Fi al-’Ard Muhamad Iqbal
JURNAL PENELITIAN Vol 13 No 2 (2016): Volume 13 Nomor 2 2016
Publisher : Universitas Islam Negeri K.H. Abdurrahman Wahid Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28918/ebrc6894

Abstract

This paper discusses the concept of khalifah fil arḍ as God’s representative in preserving nature. It aims to build awareness of energy derived from natural resources. This research is a library-based study using a qualitative descriptive approach. Based on the analysis of the data, the study concludes that comprehensive knowledge of energy awareness forms the foundation of the concept of khalifah fil arḍ. Promoting energy awareness within society therefore represents a contemporary manifestation of the role of khalifah fil arḍ.
Co-Authors Abdul Malik Aditya Budi Atma Rusadi Agus Somad Saputra Alfian Fahmi Salam Alfin Agung Ramadhan Alfisyah Miladiah Amelia Kurniawati Andi Chairil Furqan Andy Riski Pratama Aqmar Sulton Aulia Ari Diana Susanti Asep Moch Saepuddin Ayu Pratami Beginer Subhan Bhanu Prakash Nunna Caesar Putra Anugerah Dede Jatmika Prawira Deviana Nurhuda Devina Chairun Nisha R Dwi Ragil Febriyanti Fachry Abda El Rahman Fawwaz Jannuranti Hadi Nasbey Hawis H Madduppa Iman Sopyan Jeddah Isnul Jhoni Wahyu Adi Lia Asmalah Luh Putu Ratna Sundari Luluk Eka Meylawati Luthfi Alfath Nursalam Mohamad Usman Muhammad Badruzzaman Najwa Shahzaadee Firdaus NEVIATY PUTRI ZAMANI Nina Yusnita Yamin Nur Fitrianto Nur Indri Yani Harahap Oscar Yanuarianto Raden Mohamad Herdian Bhakti Ramadian Bachtiar Raudhotul Aliyah Resti Lia Andharsaputri Resya Falisha Salva Nissa Aulia Darwan Sanusi Ibrahim Sihono Sihono Silfia Hanani Siti Rochanah Soeranto Human Sofyan Damrah Hasan Susanto Susanto Wijaya Murti Indriatama Winda Puspitasari Wisnu Suryo Negoro Yeni Kurniawati Yopi Loves Yuanita Suliandri Zada Utama