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All Journal Journal of Physics and Its Applications Jurnal Silva Tropika Jurnal Pengabdian kepada Masyarakat Nusantara Journal of Energy, Material, and Instrumentation Technology
Komariah, Rahma Nur
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Agriculture, Biological Sciences & Forestry Astronomy Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics Social Sciences

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Effect of Corona Plasma Radiation on the Contact Angle and Wettability of Bamboo Surface Alfajrin, Achmad Chalid Afif; Muhlisin, Zaenul; Komariah, Rahma Nur; Putra, Bintang Ridzky Ranindra; Nazuwatussya'diyah, Nazuwatussya'diyah; Arzi, Yudha Hamdi; Mardhiyatna, Mardhiyatna; Sari, Rizki Yustisia
Journal of Energy, Material, and Instrumentation Technology Vol 6 No 2 (2025): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v6i2.294

Abstract

Bamboo is a widely utilized non-timber forest product, often innovated into laminated boards, particle boards, and plywood. The outer bamboo surface (skin) possesses high compressive strength but exhibits hydrophobic properties, limiting its wettability toward liquids. Plasma corona technology, operating at atmospheric pressure and using surrounding gases at a relatively low cost, offers a promising solution to modify bamboo surfaces by increasing their surface energy. This study aimed to analyze the hydrophilic resistance and wettability of bamboo surfaces treated with plasma corona, measured through contact angle analysis. The direct drop method was employed by dripping water and phenol formaldehyde (PF) fluids onto bamboo surfaces treated with plasma corona. Contact angle measurements were performed using ImageJ drop analysis software. Results demonstrated that plasma corona treatment significantly reduced contact angle values, improving surface wettability. Untreated bamboo surfaces showed contact angles of 72.7° for water and 111.5° for PF fluids, indicating limited wettability. Post-treatment, the contact angles decreased to less than 30° for water and below 90° for PF, signifying enhanced wettability. However, the hydrophilic properties were found to be non-permanent, with contact angle values gradually increasing over 13 days of observation. Among the tested parameters, plasma corona treatment with a current strength of 75 mA for 5 minutes provided the most optimal wettability improvement for water and PF fluids. This study highlights the effectiveness of plasma corona in enhancing bamboo surface wettability, making it more suitable for applications requiring adhesive bonding or fluid spreading in industrial processes.
Identifikasi Makroskopis dan Mikroskopis Kayu Medang Sereh Berdasarkan Bagian Batang : Macroscopic and Microscopic Identification of Lemongrass Medang Wood Based on Stem Section Anggraini, Riana; Agustina, Ana; Komariah, Rahma Nur; Khabibi, Jauhar
Jurnal Silva Tropika Vol. 7 No. 1 (2023): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v7i1.29881

Abstract

ABSTRACT Some aspects that can be a reference in identifying lemongrass wood include anatomical structure (macro and micro properties) based on the trunk (base, middle and end). The results of research identifying the anatomical properties of lemongrass wood on various parts of the trunk provide conclusions of anatomical structure for the macroscopic structure characteristics of lemongrass wood in general do not differ between the position of the base, middle and end and the terrace and sapwood, namely giving the heartwood color brown, has a striped pattern, a rather smooth texture, a smooth tactile effect, somewhat shiny, has a smell like lemongrass or telon oil, the hardness is rather hard and heavy. The microscopic structural characteristics of lemongrass medang wood in the position of lemongrass medang logs (base, middle and tip) show that in general wood fibers experience an increase in length from pith to leather. Based on testing the quality of wood fiber for pulp and paper use which includes fiber length, Runkle Ratio, Muhlstep Ratio (MR), Felting Power (FP), Flexibility Ratio (FR) and Coefficient of Rigidity (CR) that lemongrass wood fiber is included in quality class III. Quality class III is a class of wood fiber that has tear firmness, rupture resistance and low tensile firmness.   Keywords: macroscopic, microscopic, medang wood, position of the trunk   ABSTRAK Beberapa aspek yang dapat menjadi acuan dalam mengidentifikasi kayu medang sereh ini adalah meliputi struktur anatomi (sifat makro dan mikro) berdasarkan bagian batangnya (pangkal, tengah dan ujung). Hasil penelitian identifikasi sifat anatomi kayu medang sereh pada berbagai bagian batang memberikan kesimpulan struktur anatomi untuk ciri struktur makroskopis kayu medang sereh secara umum tidak berbeda antara posisi pangkal, tengah dan ujung dan bagian teras dan gubalnya yaitu memberikan warna kayu terasnya coklat, mempunyai corak bergaris-garis, tekstur agak halus, kesan raba halus, agak mengkilap, mempunyai bau seperti bau sereh atau minyak telon, kekerasan agak keras dan berat.  Ciri struktur mikroskopis kayu medang sereh secara pada posisi batang kayu medang sereh (pangkal, tengah dan ujung) menunjukkan bahwa secara umum serat kayu mengalami penambahan panjang dari empulur hingga menuju kulit. Berdasarkan pengujian kualitas serat kayu untuk penggunaan pulp dan kertas yang meliputi panjang serat, Runkle Ratio, Muhlstep Ratio (MR), Felting Power (FP), Flexibility Ratio (FR) dan Coeffisien of Rigidity (CR) bahwa serat kayu medang sereh masuk ke dalam kelas mutu III. Kelas mutu III merupakan kelas serat kayu yang memiliki keteguhan sobek, ketahanan pecah dan keteguhan tarik yang rendah.   Kata kunci: medang sereh, posisi batang, makroskopis, mikroskopis
Peningkatan Sarana Pemanduan Wisata dalam Peningkatan Daya Tarik Wisata Desa Way Kalam, Kabupaten Lampung Selatan Komariah, Rahma Nur; Octaviani, Eti Artiningsih; Hasibuan, Mhd Muhajir; Afif Alfajrin, Achmad Chalid; Setiawa, Tirta
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 6 No. 3 (2025): Edisi Juli - September
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v6i3.6575

Abstract

Way Kalam merupakan desa penyangga Hutan Lindung Gunung Rajabasa (HLGR), sebagai hutan hujan dataran rendah paling selatan Sumatera yang ditempati beragam jenis flora dan fauna termasuk jenis langka dan dilindungi. Kawasan desa Way Kalam memiliki potensi besar dan letak yang sangat strategis sebagai objek wisata karena letaknya yang tidak jauh dari ibukota provinsi didukung oleh akses mudah, serta tidak adanya pesaing sejenis pada radius 50 km. Namun, permasalahan sosial kehutanan seperti perburuan, dan pengambilan sumberdaya lainnya beberapa kali terjadi di dalam kawasan. Hal ini terjadi karena rendahnya manfaat ekonomi yang dirasakan secara langsung dari wisata di desa penyangga HLGR. Salah satu cara meningkatkan daya tarik adalah dengan peningkatan sarana pemanduan ekowisata. Potensi atraksi wisata dari aspek satwaliar yang ditawarkan di lokasi sangat besar. Oleh karena itu, solusi yang ditawarkan tim berupa peta pemanduan persebaran satwa liar yang dapat diakses oleh pengunjung sehingga meningkatkan daya tarik wisata yang ditawarkan kepada pengunjung.
Electrokinetic Remediation Treatment of Chromium (Cr) Concentration and Distribution in Soil from the PT Semen Baturaja Cement Factory Environment Alfajrin, Achmad Chalid Afif; Komariah, Rahma Nur; Prasetia, Hendra; Halid, Muhammad Akmal; Aisyara, Arien; Simatupang, Lamtongam; Ghifari, Hamzah Daffa; Widiatama, Angga Jati; Arham, La Ode; Mukti, Aqil Chandra; Ningsih, Dina Widya; Ferdinan, Muhammad Rizky
Journal of Physics and Its Applications Vol 7, No 3 (2025): August 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i3.25377

Abstract

PT Semen Baturaja, a cement production company in South Sumatra, Indonesia, holds a Mining Business License of 103.4 hectares, of which 64.23% was reclaimed during 2017–2021. However, the revegetation success rate remains low at only 9%, potentially due to excessive soil chromium (Cr) accumulation. This study investigates the application of electrokinetic remediation to reduce Cr concentrations and improve soil conditions for revegetation. The experiment was conducted on soil samples collected from Disposal Area 4 of PT Semen Baturaja, using a laboratory-scale setup with copper electrodes powered by a 20 V direct current, applied continuously for 48 hours. The results showed that Cr ions tend to migrate toward the anode due to electromigration, while redox reactions influence Cr distribution over time. The highest treatment efficiency was observed in segment one (11.123%), and the lowest in segment three (1.651%). These findings demonstrate the potential of electrokinetic remediation as a viable method for enhancing revegetation in Cr-contaminated post-mining soils.
Co-Authors Afif Alfajrin, Achmad Chalid Agustina, Ana Aisyara, Arien Alfajrin, Achmad Chalid Afif Arham, La Ode Arzi, Yudha Hamdi Eti Artiningsih Octaviani Ferdinan, Muhammad Rizky Ghifari, Hamzah Daffa Halid, Muhammad Akmal Hendra Prasetia Jauhar Khabibi Mardhiyatna, Mardhiyatna Mhd Muhajir Hasibuan Mukti, Aqil Chandra Nazuwatussya'diyah, Nazuwatussya'diyah Ningsih, Dina Widya Putra, Bintang Ridzky Ranindra Riana Anggraini, Riana Sari, Rizki Yustisia Setiawa, Tirta Simatupang, Lamtongam Widiatama, Angga Jati Zaenul Muhlisin