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Endah Yuniarti, Endah
Universitas Dirgantara Marsekal Suryadarma
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Structural Evolution and Ionic Conductivity of Al2O3-Doped LLZO via Single Heat Treatment Yuniarti, Endah; Priyono, Slamet; Sindhu Hendradjaja, Simon; Setiawan, Jan; Prijono, Kusdi; Femlee R, Brity
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.157-170.2025

Abstract

This study investigates the synthesis via solid state reaction and characterization of Li₇La₃Zr₂O₁₂ (LLZO) as a solid electrolyte doped with Al₂O₃ using a one-step heat treatment (sintering at 900°C for 4 hours). Samples were prepared with doping variations; pure LLZO (0Al-LLZO), 0.25Al-LLZO, and 0.5Al-LLZO, based on the formula  with x = 0, 0.25, and 0.5, and were mixed using ball milling for 4 hours at 25 Hz. XRD and Rietveld refinement confirmed the formation of a dominant tetragonal Li₇La₃Zr₂O₁₂ phase alongside minor secondary phases. Grain sizes ranged from 1.2 to 1.3 µm, and densification improved with increasing Al content. The 0.25Al-LLZO sample exhibited the highest ionic conductivity of 2.83 × 10⁻⁹ S/cm at room temperature, representing a 2.96-fold increase over undoped LLZO. These results indicate that Al doping significantly enhances structural stability and Li-ion transport in LLZO electrolytes processed at moderate temperatures.
ANALISIS SIMULASI KAPASITAS PENGIRIMAN KARGO DARI JAKARTA KE BANJARMASIN MENGGUNAKAN METODE MAXIMUM FLOW MUSTIKO, PANGGIH JOGO; ARIFIN, MUFTI; YUNIARTI, ENDAH
JURNAL TEKNIK INDUSTRI Vol 12 No 1 (2023): JURNAL TEKNIK INDUSTRI
Publisher : Universitas Dirgantara Marsekal Suryadarma

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

Abstract

Pengiriman kargo oleh jasa ekspedisi selain melalui jalur darat juga melalui transportasi udara yang menggunakan ruang belly cargo dari pesawat angkut penumpang berjadwal. Variasi tipe pesawat angkut yang digunakan oleh berbagai maskapai menghasilkan variasi kapasitas belly cargo. Perbedaan kapasitas tersebut mempengaruhi proses pengiriman kargo apabila terdapat rute dengan transit dan ganti tipe pesawat. Penelitian ini melakukan perhitungan kapasitas maksimum dengan simulasi pada pengiriman kargo dengan rute Jakarta (CGK) ke Banjarmasin (BDJ). Kapasitas maksimum dihitung meggunakan metode maximum flow. Perhitungan diawali dengan mengumpulkan data semua rute yang menghubungkan CGK dan BDJ dan tipe pesawat yang digunakan, menghitung kapasitas kargo setiap tipe pesawat yang digunakan, dan menghitung kapasitas maksimum dengan metode maximum flow. Hasil metode maximum flow untuk semua rute penerbangan yang menghubungkan CGK menuju BDJ menghasilkan kapasitas kargo maksimum sebesar 225,8 m3 . Rute CGK-UPG-BDJ menyisakan kapasitas kargo sebesar 55,1 m3 dan rute CGK-BPN-BDJ menyisakan kapasitas kargo sebesar 55,6 m3 dikarenakan adanya perbedaan jenis pesawat. Kata Kunci: Belly Cargo, Maximum Flow, Jakarta-Banjarmasin
PENYULUHAN OPTIMALISASI PERAN KOPERASI PETERNAK IKAN UNTUK MENINGKATKAN KESEJAHTERAAN DI DESA CINTAKARYA, PARIGI, PANGANDARAN Yuniarti, Endah; Maulid, Deden Yusman; Pangestika, Widya
Reswara: Jurnal Pengabdian Kepada Masyarakat Vol 3, No 2 (2022)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v3i2.1789

Abstract

Salah satu kegiatan tri dharma perguruan tinggi adalah pengabdian kepada masyarakat. Politeknik Kelautan dan Perikanan Pangandaran (PKPP) melaksanakan salah satu tri dhrama tersebut di Desa Cintakarya, Kecamatan Parigi, Pangandaran. Kegiatan pengabdian kepada masyarakat dilaksanakan dengan penyuluhan terkait optimalisasi peran koperasi peternak ikan. Peran koperasi peternak ikan sangatlah penting dalam tataniaga dan pemasaran hasil budidaya ikan, mengingat semangat yang dibawa koperasi merupakan semangat gotong royong dan kekeluargaan dalam mencapai tujuan organisasi. Optimalisasi peran koperasi yang melibatkan anggota koperasi (peternak ikan), pemerintah, industri, dan akademisi diharapkan dapat memberikan dampak positif khususnya bagi peternak ikan. Penyuluhan optimalisasi peran koperasi peternak ikan ini dapat dinyatakan mencapai target yang diharapkan dengan kehadiran 89,28% peserta dan antusiasme peserta yang tinggi
Numerical Simulation of Bird Strike with Varied L/D Ratio in Hemispherical-ended Cylinder Bird Model Using Coupled Eulerian Lagrangian Method Yuniarti, Endah; Sitompul, S Afandi; Warsiyanto, B Aji
Jurnal Fisika Unand Vol 12 No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.628-638.2023

Abstract

This research studies the numerical simulation of the finite element method for bird strike using a hemispherical-ended cylinder bird model with varying length-to-diameter (L/D) ratio, namely 1.4; 1.5; 1.6; 1.7; 1.8; 1.9; and 2.0. Birds are modelled with elastic, plastic, and hydrodynamic behaviour. The bird model uses the Coupled Eulerian-Lagrangian (CEL) method with impact speeds of 100 ms-1, 200 ms-1, and 300 ms-1. The simulation results show that the Hugoniot pressure value is around 15-36 times higher than stagnation pressure in L/D 1.4; 14-36 times in L/D 1.5; 13-30 times in L/D 1.6; 12-32 times in L/D 1.7; 12-26 times in L/D 1.8; 13-30 times in L/D 1.9; and 13-29 times in L/D 2.0. It was found that the highest Hugoniot and stagnation pressure were in L/D 1.5 and 1.8, while the lowest Hugoniot and stagnation pressure were in L/D 2.0 and 1.5, respectively. In addition, the error of the numerical results of the average Hugoniot and stagnation pressure value compared to the analytic was 2.9% and 7%, respectively. 
ANALISIS PEMBEBANAN STATIS PADA STRUKTUR HEXACOPTER DRONE UNTUK PERTANIAN (DRUPER) Erlangga, Noval; Sindhu, Simon; Yuniarti, Endah
Jurnal Teknologi Kedirgantaraan Vol 9 No 1 (2024): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35894/jtk.v9i1.100

Abstract

Menurut data dari Pusat Data dan Sistem Informasi Pertanian Sekretariat Jenderal – Kementerian Pertanian 2020, area lahan pertanian di Indonesia seluas 36.817.086 Hektar. Dengan luas lahan pertanian yang begitu potensial, petani bisa menggunakan teknologi drone untuk membantu tugas untuk meningkatkan produktifitas. Tujuan dari peneltian ini untuk mengetahui nilai kekuatan yang diterima drone dalam menahan beban pada kondisi terbang hover. Desain drone terdiri dari tiga bagian utama yaitu Body frame menggunakan material plastik polikarbonat, Support structure, dan Skid yang menggunakan material aluminium dengan konfigurasi hexacopter. Sketsa dan model drone didesain dan dirancang menggunakan perangkat lunak CAD (Computer Aided Design) Solidworks dan simulasi pembebanan struktur dilakukan menggunakan perangkat lunak CAE (Computer Aided Engineering) ANSYS Workbench. Perhitungan simulasi analisis kekuatan struktur drone dengan metode elemen hingga diperoleh nilai Regangan Von Mises sebesar 0,00089 dan Tegangan Von Mises maksimum sebesar 21,96 MPa yang terjadi pada bagian komponen Support Structure. Dimana nilai tegangan ini masih dibawah nilai kekuatan luluh (Yield Strength) materialnya yang berupa aluminium 6061-T6 yaitu sebesar 259,2 MPa, sehingga secara umum drone untuk pertanian ini dinyatakan aman.
Analisis Keandalan Main Battery Peshawar CRJ-1000 Di Maskapai Garuda Indonesia Hardiansyah, Haidar; Franciscus, Freddy; Yuniarti , Endah
Jurnal Teknologi Kedirgantaraan Vol 9 No 1 (2024): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35894/jtk.v9i1.106

Abstract

The main battery on the CRJ-1000 aircraft is an important component in the aircraft's electrical system. The main battery functions as the main source of electric power when the aircraft is turned off or when the aircraft engine is not operating. If there is a failure in the aircraft's battery it can cause disruption to other systems so that the aircraft cannot fly or Aircraft on Ground (AOG). In Garuda Indonesia's CRJ-1000 aircraft battery, there were several findings where the battery failed before reaching the scheduled removal time. This study aims to analyze the reliability of the CRJ-1000 main battery on the Garuda Indonesia airline. The analytical method is carried out by collecting historical data on main battery failures and calculating the Mean Time Between Failure (MTBF) and Availability values for a certain period. In addition, an analysis was also carried out on maintenance procedures and replacement of the main battery carried out by Garuda Indonesia airline technicians. The results of the analysis show that the MTBF of the CRJ-1000 main battery on Garuda Indonesia airlines has a fairly good value, but there is a need for improvement in maintenance procedures and replacement of the main battery to increase availability. The recommendations proposed are evaluating the main battery maintenance and replacement procedures, as well as increasing the availability of main battery spare parts which can speed up repair times in failure situations.
ANALISIS PERBANDINGAN ON-TIME PERFORMANCE MASKAPAI PENERBANGAN ANTARA BANDARA HUSEIN SASTRANEGARA DAN BANDARA INTERNASIONAL KERTAJATI MENGGUNAKAN FLIGHTRADAR24 Abdillah, rizki Ade; Yuniarti, Endah; Shevilia, Erna
Jurnal Teknologi Kedirgantaraan Vol 10 No 1 (2025): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35894/jtk.v10i1.157

Abstract

This study evaluates the impact of the operational transfer from Husein Sastranegara Airport to Kertajati International Airport, focusing on airline On-Time Performance (OTP) before and after the transition. The research utilizes real-time flight data from Flightradar24 and secondary data from Angkasa Pura II to analyze daily flight schedules for one month prior to (October 2023) and after (April 2024) the transfer. The data is processed to determine percentages of on-time performance, delays, and flight cancellations at both airports. Findings reveal that post-transfer, the total number of flights decreased by 5.20%, while on-time performance improved by 8.81%, from 55.78% at Husein Sastranegara Airport to 64.02% at Kertajati International Airport. Additionally, flight delays reduced by 38.56%, suggesting enhanced operational efficiency. However, the number of flight cancellations rose from 0 at Husein Sastranegara Airport to 24 at Kertajati International Airport, indicating challenges in operational adjustment at the new facility. Key factors influencing delays include military aircraft movements, weather conditions, and the operational adjustments required following the airport transfer.
Resolution of Business Disputes in the Aviation Industry: The Role of Law and Arbitration Suryawan, Ryan Firdiansyah; Sungkono; Endah Yuniarti
Journal of Law, Politic and Humanities Vol. 4 No. 1 (2023): (JLPH) Journal of Law, Politic and Humanities (November - December 2023)
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/jlph.v4i1.358

Abstract

The purpose of this study is to explore the legal framework governing dispute resolution, examine the practice of using arbitration, identify the challenges faced, and provide recommendations to improve the effectiveness of business dispute resolution in the aviation industry. Conduct a review of the relevant literature to understand the legal framework governing business dispute resolution in the aviation industry, as well as practices and trends in the use of arbitration. Analyze data obtained from literature studies, case analysis, and, trends, and findings relevant in the context of business dispute resolution in the aviation industry. The role of arbitration law and implementation in the resolution of business disputes in the aviation industry is of significant importance. Law governs operational aspects and handles conflicts, while arbitration offers efficient and transparent solutions. The focus on investment risk prevention, regulatory updates, and negotiation methods demonstrate efforts to improve a conducive business environment. Consumer protection and law enforcement are necessary to ensure fairness for all parties. Thus, efforts to increase the role of arbitration law and implementation can bring great benefits in the aviation industry.
PEMBUATAN KUE BARUASA DENGAN PENAMBAHAN TEPUNG TULANG IKAN TUNA (Thunnus sp) Maulid, Deden Yusman; Hikma, Alfiratul; Arumsari, Kusuma; Yuniarti, Endah
MARLIN Vol 4, No 1 (2023): (Februari) 2023
Publisher : Politeknik Kelautan dan Perikanan Pangandaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/marlin.V4.I1.2023.1-9

Abstract

Penelitian ini merupakan penelitian yang bertujuan untuk menambah nilai gizi pada kue baruasa dari penambahan tepung tulang ikan serta dapat mengetahui konsentrasi terbaik pada penambahan tepung tulang ikan tuna pada formula kue baruasa dengan analisis nilai hedonik, dan mengetahui karakteristik kimia dan mutu hedonik dari formula terbaik. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi penambahan tepung tulang ikan tuna yang terbaik terhadap kadar kalsium dan organoleptik pada kue baruasa. Hasil terbaik diambil dari uji hedonik yaitu pada P0 dan P3. Pada P0 (tanpa pe nambahan tepung tulang ikan tuna) yang menghasilkan, uji hedonik warna 4,32, hedonik aroma 4,32, hedonik rasa 4,32 dan hedonik tekstur 4,4. kadar air (9,90%), kadar abu (0,76%), kadar protein (9,46%), kadar lemak (16,13%), dan kadar kalsium 1,14%. Pada P3 (penambahan tepung tulang ikan tuna) yang menghasilkan, uji hedonik warna 3,2, hedonik aroma 3,2, hedonik rasa 3,44 dan hedonik tekstur 3,2. kadar air (9,97%), kadar abu (11,16%), kadar protein (6,13%), kadar lemak (36,03%), dan kadar kalsium 42,84%Aim of the risearch to increase the nutritional value of baruasa cake from the addition of fish bone meal and to find out the best concentration of adding tuna fish bone meal to the baruasa cake formula by analyzing the hedonic value, and knowing the chemical characteristics and hedonic quality of the best formula. The purpose of this study was to determine the best concentration of tuna bone meal addition to calcium and organoleptic levels in baruasa cake. The best results were taken from the hedonic test, namely at P0 and P3. At P0 (without the addition of tuna bone meal), the color hedonic test was 4.32, aroma hedonic was 4.32, taste hedonic was 4.32 and texture hedonic was 4.4. water content (9.90%), ash content (0.76%), protein content (9.46%), fat content (16.13%), and calcium content 1.14%. In P3 (the addition of tuna fish bone meal) which resulted, the color hedonic test was 3.2, the aroma hedonic test was 3.2, the taste hedonic test was 3.44 and the texture hedonic test was 3.2. water content (9.97%), ash content (11.16%), protein content (6.13%), fat content (36.03%), and calcium content 42.84%
Peran Produksi Daging Lokal dalam Mendukung Pertumbuhan Industri Rumah Makan di Kabupaten Pangandaran Wulansari, Asri; Febrianto, Firman; Mutaqin, Bambang Kholiq; Yuniarti, Endah; Ismiraj, Muhammad Rifqi
AGRINUS : Jurnal Agro Marin Nusantara Vol. 1 No. 2 (2024): AGRINUS: JURNAL AGRO MARIN NUSANTARA
Publisher : Yayasan Pengembangan Dan Pemberdayaan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62180/9br36r19

Abstract

Penelitian ini mengkaji keterkaitan antara produksi daging lokal dan perkembangan rumah makan di Kabupaten Pangandaran, sebuah daerah dengan potensi tinggi di sektor pertanian dan peternakan. Penelitian ini bertujuan untuk menganalisis dinamika antara kedua sektor tersebut serta mengidentifikasi faktor-faktor yang memengaruhinya. Metode yang digunakan adalah analisis deskriptif dengan memanfaatkan data sekunder selama lima tahun terakhir (2019–2023), mencakup produksi daging lokal (ruminansia dan unggas) dan jumlah rumah makan di sepuluh kecamatan di Pangandaran. Hasil penelitian menunjukkan adanya peningkatan signifikan dalam produksi daging lokal, terutama daging ayam pedaging dan sapi, dengan puncaknya pada tahun 2022, meskipun terjadi penurunan pada tahun 2023 akibat faktor eksternal seperti wabah Penyakit Mulut dan Kuku (PMK). Di sisi lain, jumlah rumah makan mengalami peningkatan yang signifikan, khususnya di Kecamatan Pangandaran dan Parigi, yang didorong oleh sektor pariwisata yang berkembang pesat. Namun, tantangan tetap ada, termasuk fluktuasi pasokan dan kualitas daging, serta persaingan dalam industri rumah makan. Studi ini menekankan pentingnya membangun hubungan yang harmonis antara kedua sektor ini untuk mendorong pertumbuhan ekonomi daerah yang berkelanjutan. Rekomendasi bagi pemerintah daerah dan pemangku kepentingan meliputi dukungan strategis dalam pengelolaan peternakan dan optimalisasi bisnis kuliner untuk memperkuat sinergi antara produksi daging lokal dan industri rumah makan. Kata Kunci: daging lokal, rumah makan, Pangandaran, pariwisata, keberlanjutan ekonomi
Co-Authors AA Sudharmawan, AA Abdillah, rizki Ade Abrian, Satriya Aditia Kusuma Wibawa Adnan Afandi, Sahril Agus Bayu Ahmad Akmal Said Aidinna, Mey Aji W, Budi Alam, Ganda Tri Albi Nuari Hastono Alimin, Edy K. amat chaeroni Ananda Rafi Rijalul Awwal Andayani, Tri Rahayu Andry Pratama, Andry Anggraeni, Gina Arumsari, Kusuma Ashari, Muhammad Yazid Asri Wulansari, Asri Aulia Andhikawati Ayu Martina B Aji Warsiyanto Bekti Yulianti Borris Y Maningka Budi Aji Warsiyanto Candra Pranoto Christi, Raden Febrianto Cynthia Rahmawati Damayanti, Windi Deden Yusman Maulid Didin Tasripin Diky Ramdani Donny Nurhamsyah Dwi Juniarsah, Fahri Edy K. Alimin Edy Suwondo, Edy Endang Wahyuningsih Enggar Kristian Erlangga, Noval fahmins Fairuza, Syarifah Farisadri Fauzan Fatalattof, Ammar Febriana, Wilda Febrianto, Firman Femlee R, Brity Firdaus, Alfino Firmansyah, Viki Fitri, Siti Ulfah Rifa`atul fitriansyah, Rizky FORTUNE JR OMBUH Freddy, Franciscus Ganjar Muhammad Nur Ginting, A.G. Nopres H, Simon Shindu H, Simon Shindu Hardiansyah, Haidar Hendi Setiyatwan Herlatini, Ayu Dewi Herry, Herry Hikma, Alfiratul Ida Ayu Putu Sri Widnyani Ismiraj, Muhammad Rifqi Israq Mifan Junaidi Jan Setiawan Jauharul Akfiya sudjaelan Kusdi Prijono Latifah, Alfina Salma Lia Budimulyati Salman Mahasir, Mahasir Martin Anjar Ginanjar Maulana, Ichsan Maulild, Deden Yusman Mochammad Imron Awalludin Mufti Arifin, Mufti muftiarifin Muhamad Jayadi Muhammad Hadi Widanto Mukammil, Safee Musthofa, Ilham MUSTIKO, PANGGIH JOGO Mutaqin, Bambang Mutaqin, Bambang Kholiq Nora Akbarsyah Novi Mayasari Nurrohmad, Abian Nusaibah Nusaibah Polpa, Eksel Pramana, Nurhadi Prayoga, Renaldi Pringgo Kusuma Dwi Noor Yadi Putra Putra, Diega Yanuar Putra, Ronald Septiawan Qoharudin, Qoharudin Rafika Arum Sari Rahma, Yusri Lutfia Rayhan Zhafrando, Muhammad Riskha Agustianingsih Rizky fitriansyah RR. Ella Evrita Hestiandari S Afandi Sitompul Sahril Afandi S Said, Ahmad Akmal Samsuni, Samsuni Sari Usih Natari Septian, Diaz Setiyawati, Defi Shevilia, Erna Simon Sindhu Sindhu Hendradjaja, Simon Sindhu, Simon Siregar, Arpan Nasri Siti Ulfah Rifa’atul Fitri Sitio, Nurul Mardhiah Sitompul, S Afandi Sitompul, Sahril Afandi Slamet Priyono Somadi, Ridho Misbahudin Sopyan Gigih Nugraha Suharwanto, Dwi Sungkono suryawan, ryan firdiansyah Suryo O, Ari Susanti, Fajar Suwardi, Arie Prasetya Syaban, Rafli Syaiful Rifki Tambunan, Pangihutan Tasripin, Didin Supriyat Tri Susilo Tri Widayatsih Ujang Hidayat Tanuwiria Utama, Agus Bayu Utama, Aldyansah Putra Warsiyanto, B Aji Widianti, Elsa Widianto, David Indra Widya Pangestika Wildan Sofary Darga