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Efek Surfaktan pada Stabilitas Nanofluid Nickekl Ferrite Mahmudi, Riyadi Adnan; Yusuf, Akhmad; Sutjahja, Inge Magdalena
Jurnal Ilmu Fisika Vol 17 No 1 (2025): March 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.1.31-40.2025

Nanofluid stability is a critical factor for the effective application of nanofluids in various fields. One simple and effective method to enhance nanofluid stability is through the addition of surfactants. This study examines the effect of different surfactants on the stability of nickel ferrite (NiFe₂O₄)/water nanofluid. The nanofluids were synthesis using the two-step method, and the surfactants investigated inculded oleic acid, polyethylene glycol 400, tetrabutylammonium bromide, gum arabic, and citric acid. Different concentrations for each surfactant were tested by adjusting the nanoparticles-to-surfactant ratio. The suspension stability was evaluated through visual observation, Zeta potential measurements, and thermal conductivity analysis. The most stable NiFe₂O₄/water nanofluid was achieved using citric acid surfactant, with a nanoparticles-to-surfactant volume ratio of 1:0.25, a Zeta potential value of -35.0 mV and an average thermal conductivity of 0.585 ± 0.007 W/m·K. The results of this study are important for developing nanofluid and magnetic nanofluid systems with optimum conductive heat transfer performance.

SOSIALISASI TENTANG PENTINGNYA PENCEGAHAN JENTIK PADA FASE AQUATIK DAN 4M PLUS DI DESA PEMATANG PANJANG,KEC. SUNGAI TABUK, KAB. BANJAR Thresye, Thresye; Affandi, Pardi; Huda, Nurul; Faisal, Faisal; Yusuf, Akhmad; Karim, Ahsar; Dalle, Juhriyansyah; Balya, Afief; Rizqina, Sila; Radityo, Radityo; Syahida, Nurul; Arifin, Arifin
BESIRU : Jurnal Pengabdian Masyarakat Vol. 2 No. 7 (2025): BESIRU : Jurnal Pengabdian Masyarakat, Juli 2025
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/besiru.v2i7.1626

Data Provinsi Kesehatan Provinsi Kalimantan Selatan pada tahun 2020 menginformasikan bahwa penyakit yang disebabkan oleh Dengue erat kaitannya dengan kondisi lingkungan dan perilaku masyarakat yang masih kurang dalam melakukan 4M plus yaitu menguras tempat penampungan air, mengubur barang bekas, menutup tempat penampungan air supaya tidak dijadikan tempat perindukan nyamuk, serta memantau jentik secara rutin. Selain itu faktor aquatik juga sangat penting dipahami sehingga dapat melakukan pencegahan terhadap jentik secara dini. Hal ini dapat mencegah pertumbuhan nyamuk penyebab DBD dengan cepat. Faktor-faktor ini menjadi penyebab penyakit DBD bersifat endemik baik di daerah perkotaan maupun pedesaan. Salah satu daerah Kabupaten Banjar yang banyak terjadi DBD adalah di Desa Pematang Panjang, Kecamatan Sungai Tabuk, Kabupaten Banjar, Kalimantan Selatan.

PENGUATAN KAPASITAS RELAWAN BENCANA MELALUI POSKO PELATIHAN PENGETAHUAN KEBENCANAAN (PAS WACANA P3K) DI KABUPATEN OKU SELATAN Liska, Uliyati; Novaria, Eva; Farhat, Farhat; Suhaila, Suhaila; Yusuf, Akhmad
CENDEKIA: Jurnal Ilmu Pengetahuan Vol. 5 No. 3 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/cendekia.v5i3.6925

This research is motivated by the high disaster risk in South OKU Regency and the significant capacity gaps in human resources for disaster management, both within official institutions (BPBD) and among unorganized community volunteers. This gap hinders the effectiveness of disaster mitigation and education. The focus of this research is to analyze the process and success of strengthening volunteer capacity through an innovative change project called the Disaster Knowledge Training Post (PASWACANA P3K). Using a qualitative approach with a descriptive case study design, data were collected through in-depth interviews, document analysis, and participant observation of the project's leadership and implementation processes. Key findings indicate that this initiative was successful thanks to strategic leadership that secured internal legitimacy and orchestrated a multi-helix collaboration model, culminating in the formation of the South OKU Siaga Volunteer Forum (ForOKUSS). This training program effectively improved the volunteers' skills, which were then directly applied in community education activities. It is concluded that the First Aid (P3K) model is an innovative solution that successfully bridges the capacity gap by empowering local potential, transforming volunteers from mere responsive forces into proactive mitigation agents, and offering a proven blueprint for building community resilience. ABSTRAKPenelitian ini dilatarbelakangi oleh tingginya risiko bencana di Kabupaten OKU Selatan serta adanya kesenjangan kapasitas yang signifikan pada sumber daya manusia penanggulangan bencana, baik di lembaga resmi (BPBD) maupun di kalangan relawan komunitas yang belum terorganisir. Kesenjangan ini menghambat efektivitas mitigasi dan edukasi kebencanaan. Fokus penelitian ini adalah menganalisis proses dan keberhasilan penguatan kapasitas relawan melalui sebuah proyek perubahan inovatif bernama Posko Pelatihan Pengetahuan Kebencanaan (PASWACANA P3K). Menggunakan pendekatan kualitatif dengan desain studi kasus deskriptif, data dikumpulkan melalui wawancara mendalam, analisis dokumen, dan observasi partisipatif terhadap proses kepemimpinan dan implementasi proyek. Temuan utama menunjukkan bahwa inisiatif ini berhasil berkat kepemimpinan strategis yang mampu mengamankan legitimasi internal dan mengorkestrasi kolaborasi model multi-helix, yang puncaknya adalah pembentukan Forum Relawan OKU Selatan Siaga (ForOKUSS). Program pelatihan ini secara efektif meningkatkan keterampilan relawan yang kemudian langsung diaplikasikan dalam kegiatan edukasi masyarakat. Disimpulkan bahwa model P3K merupakan solusi inovatif yang berhasil menjembatani kesenjangan kapasitas dengan memberdayakan potensi lokal, mengubah relawan dari sekadar tenaga responsif menjadi agen mitigasi proaktif, dan menawarkan cetak biru yang terbukti efektif untuk membangun ketangguhan komunitas.

Efek Surfaktan pada Stabilitas Nanofluid Nickekl Ferrite Mahmudi, Riyadi Adnan; Yusuf, Akhmad; Sutjahja, Inge Magdalena
Jurnal Ilmu Fisika Vol 17 No 1 (2025): March 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.1.31-40.2025

Nanofluid stability is a critical factor for the effective application of nanofluids in various fields. One simple and effective method to enhance nanofluid stability is through the addition of surfactants. This study examines the effect of different surfactants on the stability of nickel ferrite (NiFe₂O₄)/water nanofluid. The nanofluids were synthesis using the two-step method, and the surfactants investigated inculded oleic acid, polyethylene glycol 400, tetrabutylammonium bromide, gum arabic, and citric acid. Different concentrations for each surfactant were tested by adjusting the nanoparticles-to-surfactant ratio. The suspension stability was evaluated through visual observation, Zeta potential measurements, and thermal conductivity analysis. The most stable NiFe₂O₄/water nanofluid was achieved using citric acid surfactant, with a nanoparticles-to-surfactant volume ratio of 1:0.25, a Zeta potential value of -35.0 mV and an average thermal conductivity of 0.585 ± 0.007 W/m·K. The results of this study are important for developing nanofluid and magnetic nanofluid systems with optimum conductive heat transfer performance.

DISPENSASI NIKAH DALAM PERSEPSI APARAT KANTOR URUSAN AGAMA KOTA PALANGKA RAYA Yusuf, Akhmad; Munib, Munib; Baihaki, Baihaki
Jurnal Ilmu Syariah dan Hukum (JISYAKU) Vol 3 No 1 (2024): Jurnal Ilmu Syariah dan Hukum (JISYAKU)
Publisher : Sharia Faculty of State Islamic Institute (IAIN) Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23971/jisyaku.v3i1.8287

This research was motivated by the provision of marriage dispensation which caused Law Number 16 of 2019 to be ineffective based on some perceptions of officials from the Office of Religious Affairs (KUA) in Palangka Raya City. So the aim of this research is to find out what is the perception of Religious Affairs Office (KUA) officials regarding the granting of marriage dispensations by the Religious Courts to applicants in Palangka Raya City? And how to realize the implementation of marriage according to the age restrictions in Law Number 16 of 2019 concerning Marriage according to officials from the Office of Religious Affairs (KUA) in Palangka Raya City? The type of research used is empirical legal research with a sociological juridical type. Meanwhile, the approach used is a socio-legal approach. The results of the research show that the perception of KUA officials regarding marriage dispensations has two opinions, first, marriage dispensations are included in the regulations in Law Number 16 of 2019 concerning Marriage, so just agree. The second opinion explains that he agrees, but with the condition that it is only for very urgent reasons. Second, to realize the implementation of marriage according to the age restrictions in Law Number 16 of 2019 concerning Marriage according to KUA officials in Palangka Raya City, by socializing it. As for how to socialize it to get good results, it must be in all fields, such as in the field of education , health, and religious events in society.

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