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Wiyono wiyono
Jurusan Teknik Elektro Universitas Brawijaya
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Geotechnical Parameters Determination by Using Seismic Refraction Tomography in The New Capital City of Indonesia, Nusantara: Implication to Analysis of Soil Compaction Handoyo, Handoyo; Amalia, Atika; Sigalingging, Asido Saputra; Ruchimat, Acep; Wiyono, Wiyono; Akin, Özgenç
Indonesian Journal on Geoscience Vol. 12 No. 3 (2025)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.12.3.423-435

Abstract

The new capital city of Indonesia, Nusantara, in East Kalimantan, is undergoing enormous infrastructural development in Indonesia. Understanding the condition of the soil, sediment, and hardrock layers at this location is critical for geotechnical working principles. In this study, the first arrival P-wave tomography method was used to determine the distribution of P-wave velocity and geotechnical parameters (e.g. porosity, density, void ratio) to better understand the condition of the rock layers at this location. This study involved the use of seismic refraction tomography data consisting of forty-eight channels with a distance between geophones of 1 m, and a source in the form of a sledgehammer weighing 3 kg with a separation distance of 3 m. The natural frequency of the geophones used was 4.5 Hz with a recording time of 1.0 sec. Results of this investigation reveal a thinning hardrock layer from the south to the north, with a thickness ranging from 7 to 16 m correlated to consolidated alluvium. Moreover, the geotechnical parameter of sediment layers, top soil (clayey soil) and unconsolidated alluvium, has a density value range from 1.6 to 1.8 g/cm³, porosity 0.31 to 0.38, and void ratio 0.44 to 0.59. These findings show that the soil layer in the south to the middle of line profile of the studied area has low to medium compaction, requiring soil hardening activities (mechanical compaction) for infrastructure construction. Finally, the findings of this study are expected to help with infrastructure development in the IKN by utilizing geophysical technique.
PENGARUH PUPUK ORGANIK CAIR DAN PEMANGKASAN BATANG LATERAL TERHADAP BERAT KERING TANAMAN DAN KOMPONEN HASIL MENTIMUN (Cucumis sativus L.) Aziez, Achmad Fatchul; Sari, Siti Mardhika; Suprapti, Endang; Wiyono, Wiyono; Sumarah KD, Tyas; Rohmatulloh, Hafizhudin
Jurnal Ilmiah Hijau Cendekia Vol 10 No 2 (2025): Jurnal Ilmiah Hijau Cendekia
Publisher : Universitas Islam Kadiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32503/hijau.v10i2.7997

Abstract

Mentimun (Cucumis sativus L.) merupakan tanaman merambat yang tumbuh di daerah beriklim tropis seperti Indonesia. Budidaya mentimun umumnya tanpa pemangkasan, menyebabkan tanaman rimbun dan fotosintat rendah, sedangkan pemangkasan dapat merangsang pertumbuhan bagian tertentu. Selain pemangkasan, penggunaan pupuk organik cair juga dapat meningkatkan produksi mentimun, salah satunya melalui pemupukan organik. Tujuan penelitian ini untuk mengetahui interval aplikasi Pupuk Organik Cair (POC) dan jumlah pemangkasan batang lateral dan interaksinya pada berat kering tanaman dan komponen hasil mentimun.Metode yang digunakan adalah Rancangan Acak Kelompok Lengkap (RAKL) faktorial dengan dua faktor. Faktor pertama interval aplikasi POC, yaitu tanpa pemupukan, pemupukan setiap 5 hari sekali, dan pemupukan setiap 10 hari sekali. Faktor kedua pemangkasan batang lateral yaitu tanpa pemangkasan, pemangkasan 3 cabang, dan 5 cabang. Parameter meliputi berat kering tanaman, jumlah dan berat buah per tanaman serta jumlah dan berat buah per petak. Hasil penelitian menunjukkan Interval POC, jumlah pemangkasan maupun interaksinya berpengaruh sangat nyata pada semua parameter yang diamati : berat kering tanaman, jumlah buah per tanaman, berat buah per tanaman, jumlah buah per petak, dan berat buah per petak, kecuali pengaruh interval pemangkasan pada berat kering tanaman hanya berpengaruh nyata saja. Penggunaan POC dan pemangkasan maupun interaksinya sangat bermanfaat untuk peningkatan produktivitas tanaman mentimun. Kata Kunci : Batang lateral, hasil, interval POC, mentimun, pemangkasan,
Co-Authors Abdul Hafidz Achmad Fatchul Aziez Achmad Nurmandi Ade Jubaedi Agus Budiyono Akin, Özgenç Akin, Özgenç Al Mahfuz, Al Mahfuz Alfatih, Zhilan Zhalilla Puti Alhafi, Azwar Najib Alifah, Maulida Amalia, Atika Amir Hamzah Andika, Putu Pradnya Andriyani, Diana Arensi, Niken Arif Cahyanto Arif Hidayatullah, Arif BAMBANG SUJATMIKO Bangsa, Vanessa Bunga Barnes, Ahmad Bela Pitria Hakim Budiarta Cantikasari, Yuliana DARYANTI DARYANTI Denni Susanto Denny Sukma Eka Atmaja Dewi, Amina Sukma Dittyata, Rizki Dwi Susilo Utami Endang Budiasih Endang Sulastri Endang Suprapti Epan Chaidir Fatihah, Syalaysa Imani Febrianita, Maya Fitihatussiriyah, Fitihatussiriyah Hadi Susanto Handoyo Handoyo Haq, Mellanie Nadya Azmi Haris Rachmat Harmani, Evy Harmani, Evy Heri Kustanto Hidayat, Rochmad Hidayati , Diyah Nur HIDAYATI, MIFTAKHUL Ilis, N Imam Setyo Nugroho Indah Nofitasari Irwansyah Irwansyah Juwita, Mega Maduratna Karsono Karsono Koesmantoro, Hery Kunanti, Rahmi Anugrah Leo, Andi Lilipaly, Maria Ruthy Hillary Listariyanto, Adwityam Padma Putra Lujeng Widodo, Lujeng Maharani, Annissa Tiara Majlani, Majlani Moh. Erkamim Muhammad Ridho Muhammad Rivai Murman Dwi Prasetio Nariyanti, Lucianna Putri Nugraha, Aditya Prawira Nugrahaini, Yunita Oktalina, Silvi Nur OKTI PURWANINGSIH Paiman Paiman Pataropura, Amesanggeng Puspita, Mayang Bunga Rahmat Hermawan Ramadhani, Argia Putri Ramdani, Aziz Ramdhani, Muhammad Rizki Rizal Rizal Roedy Kristiyono, Roedy Rohmatulloh, Hafizhudin Romadhona, Maya Rosa Ruchimat, Acep Rudiana, Sarah Aulia Ruhimat, Acep Rumengan, Riko Febrian Santoso, Probo Sari, Sri Mardhika Setie Harieni Sheila Amalia Salma Sigalingging, Asido Saputra Sihaloho, Miranda Cahaya Rembulan Br Sihombing, Rusman Efendi Siti Mardhika Sari SKD, Tyas Soelistijono , R Soemarah KD , Tyas Sony Meidiansyah Sopian sopian Sri Herwiningsih Subejo Sulistiyawati, Anggun SUMARAH KD, TYAS Sunaryo Sunaryo Suswara, Naufal Lathief Suwandi, Jessen Laorenza Suyanto, Beny Syahna A, Fayza Teguh Supriyadi Usman Adam Wardani, Qurrotul Ain Putri Kusuma Wijaya, Ardie Halim Witjaksono, Bambang Xavier, Rais Yufli Yusuf Kurnia, Yusuf