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All Journal Indonesian Physical Review Jurnal Biogenerasi Madaniya Journal of Energy, Material, and Instrumentation Technology APCP Journal
Hilda Rahmawati
Program Studi Fisika, Fakultas Sains, Universitas Cokroaminoto Palopo
Religion Aerospace Engineering Humanities Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Physics Other

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Membangun Kesadaran Siaga Bencana di UPT SMA Neg 12 Luwu Utara Irwan Ramli; Aryadi Nurfalaq; Rahma Hi Manrulu; Fitri Djusmi; Hilda Rahmawati
Madaniya Vol. 4 No. 4 (2023)
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/27214834.579

Abstract

Indonesia merupakan salah satu negara yang paling rawan bencana alam mulai dari bencana banjir, gempa, dan gunung meletus yang disebabkan oleh kondisi geografis Indonesia. Tidak terkecuali Kabupaten Luwu Utara, kabupaten ini merupakan ujung dari dari salah satu sesar yang paling besar di pulau Sulawesi yaitu sesar Palu Kuro. Kerawanan bencana ini tidak diimbangi dengan kesadaran warga tentang bencana. Pada kegiatan pengabdian ini, kami membangun kesadaran siaga bencana di salah satu lingkungan sekolah sebagai rintisan awal kesiagaan bencana khususnya di Kecamatan Tanalili Kabupaten Luwu Utara. Tahapan PkM ini yaitu tahapan persiapan dan koordinasi dengan mitra disertai dengan penandatanganan MoU dengan pihak sekolah sebagai rintisan sekolah siaga bencana dengan Fakultas Sains. Kemudian dilanjutkan dengan pemaparan pengetahuan umum terkait bencana disertai simulasi menghadapi bencana. Di tahapan akhir dilakukan evaluasi terhadap kegiatan yang dilakukan.
Sintesis dan Karakterisasi Selenium menjadi Selenium Dioksida (SeO2) Hilda Rahmawati
Applied Physics of Cokroaminoto Palopo Vol. 4 No. 2 (2023): APCP Journal
Publisher : Universitas Cokroaminoto Palopo

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

Abstract

Selenium dioksida merupakan material yang berfungsi sebagai reagen penting dalam sintesis organic dan memiliki fotokonduktivitas yang baik apabila digunakan sebagai material pembentuk sel surya. Kegunaan selenium dioksida yang sangat fungsional tidak diimbangi dengan keberadaannya karena termasuk dalam klasifikasi mineral yang sangat langka. Oleh karena itu, pada penelitian ini selenium akan direkasikan dengan hidrogen peroksida untuk menghasilkan selenium dioksida (SeO2). Hasil XRF menunjukkan proses sintesis berhasil dilakukan dan menghasilkan selenium dioksida sebesar 99.01%.
OPTIMIZING CIGS SOLAR CELL PERFORMANCE: THE IMPACT OF COUNTER ELECTRODE ON ELECTRODEPOSITION METHODS Hilda Rahmawati; Nurmalasari Ismail
Indonesian Physical Review Vol. 7 No. 2 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i2.301

Abstract

Copper Indium Gallium Selenium (CIGS) is a type of solar cell with great potential to be developed to meet increasing energy needs. Electrodeposition is the preferred technique for fabricating CIGS solar cells because it is simple, does not require vacuum equipment, and is low-cost. One factor influencing electrodeposition is the counter electrode, so in this research, CIGS will be fabricated using platinum wire and platinum plate as the counter electrode. Based on the XRD results of CIGS oriented at (112), (211), (220), and (312), the UV-Vis results show that the resulting CIGS has an absorbance peak of 390 nm. CIGS solar cell performance results based on photoresponse produce 0.99 s and 0.45 s when using platinum wire and plate consecutively. Both platinum wire and plate as counter electrodes in electrodeposition can produce CIGS solar cells. However, CIGS with a platinum plate as a counter electrode produces more optimal CIGS performance.
Identification of Functional Groups of Rapitest Luster Leaf Products for Soil Phosphorus Testing Based on Color Changes using Fourier Transform Infrared Spectroscopy (FTIR) Asriyani, Nur; Rahmawati, Hilda
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 3 (2024): 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.v5i3.277

Abstract

Phosphorus is an important nutrient for plants and is useful as the main driver of primary productivity in plants. Periodic soil phosphorus testing is essential to monitor the availability of phosphorus in the soil so that it is not excessive or reduced to achieve maximum productivity. Testing using laboratory methods takes a long time and is expensive. Rapitest Luster Leaf is a soil testing product based on color changes using a colorimetric method of mixing reagents and color indicators that is practical, easy, portable, and can be used directly on agricultural land. Identification of Rapitest functional groups using FTIR is carried out to predict compound content as a renewable material for soil testing. The analysis showed that the functional groups formed include SO42, which occurs at 987, 631, and 602 cm-1 vibration waves. It indicates that the vibration is shifting to the right. At vibrations of 677-573 cm-1, the absorption of the Na2SO4 compound occurs. Sodium sulfate is predicted to be a reagent compound contained in Rapitest. At 811-901 cm-1 and 3524-3209 cm-1 vibration waves, functional group bonds of Mo-O and N-H are formed, respectively. The molecular bonds formed predict that ammonium molybdate is the color indicator compound used.
STRATEGI PENGEMBANGAN USAHATANI NILAM DI KECAMATAN NUHA KABUPATEN LUWU TIMUR Jusrianto; Khaerati; Rahmawati, Hilda; Ismail, Nurmalasari
Jurnal Biogenerasi Vol. 8 No. 2 (2023): Volume 8 Nomor 2 Artikel Publish Agustus 2023
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v8i2.3959

Abstract

This Research aim was to determine the development strategy of patchouli farming system in Nuha Sub-district. The site of this research was purposively selected with consideration that Nuha sub-district is one of the sub-districts existing in Luwu Timur regency that develops patchouli. Twenty eight respondent samples, 15% of population of patchouli farmers, were selected through simple random sampling method in tree villages. Data were analyzed using SWOT. The SWOT analysis revealed that the farming system was in quadrant I position (support the aggressive strategy) with SO strategy (strengths-opportunities). Program proposed to support the strategy are (1) optimizing land resources in efforts to increase production, 2) utilizing the role of farmer groups in order to develop marketing strategies, 3) empowering the farmers to be better in thinking and acting for any activity implementation, to generate profit in order to increase the productivity and to ensure the production continuity of the farming system, and 4) developing superior local seedlings through government support.
Synthesis and Characterization of Activated Carbon from Pattikala Fruit Waste (Etlingera elatior) Rahmawati, Hilda; Ismail, Nurmalasari; Asriyani, Nur; Jufri, Risma
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 4 (2024): 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.v5i4.280

Abstract

Activated carbon (AC) is an amorphous material with a suitable size pores distribution, high specific surface area, and high surface reactivity. Activated carbon can be produced from biomaterials and can be used as a water filter material, an absorbent for hazardous substances, and as electrodes in supercapacitors. Etlingera elatior or Pattikala fruit waste has lignocellulose content that can potentially be activated carbon material. This study aimed to synthesize Etlingera elatior or Pattikala fruit waste by chemical activation method into activated carbon. Based on the study's results, activated carbon from Pattikala fruit waste has a high purity level of 87.80%, and SEM results show that pores have begun to form in the activated carbon samples produced. This study demonstrates that activated carbon can be produced from Etlingera elatior fruit waste.
Co-Authors Aryadi Nurfalaq Asriyani, Nur Fitri Djusmi Ismail, Nurmalasari Jufri, Risma Jusrianto khaerati Nurmalasari Ismail Rahma Hi Manrulu, Rahma Hi Ramli, Irwan