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All Journal Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Martabe : Jurnal Pengabdian Kepada Masyarakat Global Science Society Wahana Fisika : Jurnal Fisika dan Terapannya
Rahmawati, Rahmawati
Program Studi Fisika, Fakultas Teknik, Universitas Samudra
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Public Health Social Sciences

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 1 
Analisis Laju Korosi Pada Logam Melalui Proses Dipcoating Larutan Elektrolit Miranda Miranda; Rahmawati Rahmawati
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 2 (2020)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v6i2.6830

Abstract

This study aims to determine how to test the rate of metal corrosion using dip-coating electrolyte solutions. The electrolyte solutions used are vinegar, lime juice, saltwater, and rainwater—this research conducted by the method of losing weight by dipping the electrolyte solution. The sample immersed for 27 days. The calculation results obtained and samples without coating have a high corrosion rate, so they destroyed quickly. The higher the value of the corrosion rate, the more easily destroyed it will be, and the sample will easily weather/damaged. Likewise, on the contrary, the lower the corrosion rate, the less corrosion that occurs, and the better the sample is protected from rust. 
RANCANG BANGUN WEB E-COMMERCE SEBAGAI SARANA MARKET DIGITAL KELOMPOK USAHA SEUKE TEULAYA DESA MATANG GLEUM KABUPATEN ACEH TIMUR Fazrina Saumi; Rahmawati Rahmawati; Salman Salman; Rahmad Almi
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 4, No 2 (2021): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v4i2.357-361

Abstract

The Seuke Teulaya group is one of the groups engaged in the processing of pandanus leaves to become more valuable. The problems faced by partners so far are (a) Limited markets in distributing production products from the Seuke Teulaya business group, (b) Marketing is still carried out conventionally, namely through traditional markets, hawkers, and agents (c) Sales results in general have not been able to cover costs production. The PKM team offers a solution, namely by expanding the marketing coverage area and the information technology approach in the form of digital sales by building the Seuke Teulaya business group's e-commerce web and third-party e-commerce webs such as Bukalapak, Tokopedia, and Shoope as well as promotion on social media (Facebook, Instagram , and WhatsApp). The output of this program is national online media publications, local print media, activity videos, non-accredited journals, e-commerce websites that are integrated with Instagram, Facebook, and WhatsApp as well as seller accounts on Bukalapak, Tokopedia, and Shoope.
PELATIHAN BUDIDAYA (Daphnia sp.) UNTUK PAKAN ALAMI SEBAGAI LAPANGAN PEKERJAAN POTENSIAL BAGI KELOMPOK PEMUDA DESA PAYA BUJOK SEULEUMAK, KOTA LANGSA Kartika Aprilia Putri; Rahmawati Rahmawati; Suri Purnama Febri; Andri Yusman Persada; Teuku Fadlon Haser
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 3 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i3.1088-1093

Abstract

This community service activity aims to train the community, especially youth groups in the village of Paya Bujok Seuleumak in the cultivation of Daphnia sp. for natural betta fish feed by utilizing chicken manure waste as an alternative potential employment. The training activity was carried out for 3 times and was attended by 20 participants. The participants of the activity were creative youths in the village of Paya Bujok Seuleumak, Langsa City, Aceh. The method used in this activity is the direct approach method, practice, and lectures. The results achieved in this activity are the cultivation of natural feed (Daphnia sp.) using chicken manure which can increase economic value. From the results of post-activity monitoring and evaluation, it is known that all participants can apply and re-apply independently and can produce their own Daphnia sp., so as to get optimal results.
IMPLEMENTASI DIGESTER BIOGAS PORTABLE DARI DRUM 200 L SEBAGAI GAS RUMAH TANGGA BERBASIS LIMBAH TERNAK SAPI DI ALUE IE PUTEH ACEH TAMIANG Teuku Andi Fadlly; Rahmawati Rahmawati; Rachmad Almi Putra; Alamsyah Wan
Global Science Society Vol 2 No 2 (2020): Global Science Society (GSS) Jurnal Ilmiah Pengabdian Kepada Masyaraka
Publisher : LPPM dan PM Universitas Samudra

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

Abstract

Implementation of portable biogas digester as domestic gas-based cattle waste has been done. Biogas contributes to reducing negative externalities associated with organic waste such as groundwater and soil pollution and emissions of local air pollutants. In addition, biogas is a renewable energy source. Alue Ie Puteh is a village located in Manyak Payed District, Aceh Tamiang Regency has an area of ± 650 hectares. Produced through anaerobic digestion of biodegradable organic raw materials, one of which is animal residues that produce high methane gas content (40-70%). The area of plantations and rice fields of the village is very wide, so that the average community farms and raises cattle. Cage waste in the form of cow dung in the village has not been maximally utilized and just piled up. The lecture method was carried out by providing information to the public about the benefits of portable biogas digester as an alternative gas product and organic fertilizer. Practice method is done by providing information to the public how to manufacture portable biogas digester, cheap and safe. The results obtained that the community was very enthusiastic in participating in the implementation of a portable biogas digester made from cattle cage waste so that the activity went smoothly, thus increasing the insights and skills of the community. In addition to this, increasing the economy of the community in a fuel crisis by utilizing alternative gas to reduce the need for LPG for households. Biogas digester side products such as organic fertilizer that can be used for agriculture. The methane gas generated in the portable biogas digester with a capacity of 200 L in 20 days can boil water.
COMMUNITY EMPOWERMENT THROUGH THE MANUFACTURING OF LOCAL MICROORGANISMS FROM BANANA COMB WASTE AS A DECOMPOSER FOR PRODUCING LIQUID ORGANIC FERTILIZERS Tisna Harmawan; Ulil Amna; Rahmawati
Global Science Society Vol 4 No 1 (2022): Global Science Society (GSS) Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : LPPM dan PM Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/gss.v4i1.4323

Abstract

This Community Service Program aims to empower the community through the utilization of banana weevil waste in Matang Panyang Village, East Langsa. Based on the analysis of the situation in the village, there are many banana plants, both on vacant land and in resident’s house. The nature of the banana tree that only lasts for one harvest and then will be cut for plant the new one will of course be a problem for surrounding environment because so far the banana weevil has only been thrown away and cannot be used, so that it only becomes as a waste. This condition became the basis for the this program to carry out community service to utilize banana weevil waste to produce the liquid organic fertilizer. The partner in this program is resident of Desa Matang Panyang, who will be trained in making local microorganism from banana weevil waste as decomposers of liquid organic fertilizer.This program will be carried out in several stages: preparation, socialization, field practice, and monitoring. This program is expected to produce a productive and independent community as an effort to empower the community by utilizing surrounding waste. The expected output of this program is the existence of an independent community effort in innovating the use of banana weevil waste as a decomposer for making liquid organic fertilizer which can be used directly in improving the quality of the community's agriculture.
PENERAPAN TEKNOLOGI PADA PENGOLAHAN ARANG AKTIF DARI LIMBAH KULIT SINGKONG SEBAGAI ANTI BAKTERI ALAMI PADA SABUN CAIR PENCUCI TANGAN Rahmawati Rahmawati; Dewi Rosa Indah; Fazrina Saumi
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 10 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i10.3530-3537

Abstract

Kegiatan Pengabdian Kepada Masyarakat (PKM) telah dilaksanakan untuk menyelesaikan permasalahan masyarakat melaui inovasi tentang pemanfaatan limbah kulit singkong menjadi arang aktif (actived charcoal) menjadi bahan baku sabun cair. Kegiatan pengabdian ini berlangsung selama 6 bulan, dengan sasaran kegiatan pengabdian adalah masyarakat Desa Karang Anyar, Kecamatan Langsa Baro yang merupakan pengusaha keripik singkong berskala home industri. Permasalahan yang dihadapi oleh mitra adalah penumpukan limbah kulit singkong hasil produksi keripik singkong yang belum dapat dimanfaatkan. Melalui kegiatan pengabdian ini, masyarakat akan diedukasi untuk memanfaatkan ilmu dah teknologi untuk memanfaatkan limbah kulit singkong sebagai arang aktif sebagai bahan baku pembuatan sabun cair anti bakteri. Rangkaian kegiatan yang dilakukan dalam pengabdian meliputi beberapa tahapan, pertama dilakukan survey awal tentang permasalah yang dihadapi oleh masyarakat desa, selanjutnya adalah kegiatan sosialisasi, tahap ketiga melaksanakan pembuatan arang aktif dari limbah kulit singkong, dan selanjutnya pelatihan pembuatan sabun cair, tahap terakhir adalah pendampingan mitra dalam proses produksi dan penjualan. Dari kegiatan ini dihasilkan sebuah produk berupa sabun cair anti bakteri yang dapat dipasarkan sebagai salah satu produk unggulan selain keripik singkong.
PEMBERDAYAAN REMAJA PRODUKTIF MELALUI PELATIHAN KREASI RANUP PEUNEUWOE SEBAGAI UPAYA PELESTARIAN TRADISI BA RANUP DALAM ADAT ACEH Nurviana Nurviana; Rahmawati Rahmawati; Ulya Nabilla; Amelia Amelia; Riezky Purnama Sari; Fitra Muliani; Fairus Fairus
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 10 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i10.3645-3651

Abstract

Melestarikan keberagaman adat dan budaya Indonesia adalah tanggung jawab bersama pemerintah, masyarakat, dan individu. seni kreasi ranup peuneuwoe (sirih hantaran) merupakan salah satu adat dan kebudayaan Aceh yang harus dijaga kelestariannya dan juga kewajiban bersama dalam mewariskan seni ini kepada generasi muda. Hal ini karena seni ini merupakan salah satu warisan budaya Aceh dan menjadi kearifan lokal yang perlu dikembangkan. Penggunaan sirih di Aceh memiliki nilai simbolis dan sering terkait dengan tradisi adat dan upacara. Sirih digunakan dalam prosesi adat sebagai lambang keharmonisan, kerukunan, dan penyatuan keluarga Saat ini, kegiatan merangkai sirih biasanya dilakukan oleh para orang tua di desa, sementara generasi muda terlibat dalam tingkat yang lebih rendah atau bahkan tidak terlibat sama sekali sehingga dikhawatirkan tidak ada generasi penerus dalam upaya pelestarian tradisi ba ranup dalam upacara adat Aceh. Hal ini menjadi perhatian tim pengabdian untuk dilakukan kegiatan pelatihan kreasi Ranup Peuneuwoe bagi remaja usia produktif di Desa Sungai Pauh. Tujuan dari kegiatan ini adalah meningkatkan keterampilan dan melestarikan tradisi ba ranup dalam adat istiadat Aceh sehingga dapat membentuk remaja produktif yang kreatif dan inovatif serta mencintai adat budaya. Adapun hasil dari kegiatan ini sangat baik dan berdampak dapat dilihat dari antusiasme peserta dalam mengikuti pelatihan yang menghasilkan produk kreasi yang rapi dan indah. Hal ini menunjukkan adanya peningkatan keterampilan masyarakat dan upaya pelestarian adat Aceh khususnya masyarakat Desa Sungai Pauh. Selain itu, keterampilan merangkai sirih juga dapat dijadikan ladang usaha untuk meningkatkan pendapatan di bidang ekonomi kreatif.
Pengaruh Variasi Karbon Aktif dari TKKS Pada TiO2 Terhadap Efisiensi Sel Surya DSSC Menggunakan Dye Kulit Jengkol (Pitchellobium Lobatum Benth) Rika Rosmalinda; Rahmawati Rahmawati; Teuku Andi Fadlly
Wahana Fisika Vol 6, No 2 (2021): December
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v6i2.39222

Abstract

Telah dilakukan penelitian tentang pengaruh variasi karbon aktif dari TKKS pada TiO2 terhadap efisiensi sel surya DSSC menggunakan dye kulit jengkol (pitchellobium lobatum benth) menggunakan penyinaran matahari langsung. Karbon aktif dari TKKS diaktivasi menggunakan metode aktivasi fisika dan kimia. Aktivasi fisika dilakukan dengan furnace sampel pada temperatur 400 ºC selama 1 jam. Aktivasi kimia dilakukan dengan perendaman pada larutan H3PO4 95% selama 2 hari. Sel surya dibuat dengan variasi komposit karbon aktif dari TKKS sebesar 5%, 10%, 15%, dan 20%. Dye dibuat menggunakan kulit jengkol dengan pelarut kimia etanol 95% dan HCl 1 M, dengan waktu perendaman 48 jam. Elektrolit iodida digunakan dengan mencampurkan KI dan yodium pada pelarut asetonitril. Analisis energi gap dengan menggunakan metode four-point probe dan karakteristik I-V pada penelitian ini dilakukan secara kuantitatif. Hasil analisis energi gap menunjukkan nilai tertinggi 2.9 eV pada sampel TiO2-C 5% dan terendah 2.3 eV pada sampel TiO2-C 20%. Hasil karakteristik I-V menunjukkan nilai Voc dan Isc semakin meningkat seiring penambahan persentase karbon pada komposit TiO2/karbon aktif dari TKKS, yaitu 383 mV dan 0.2 mA. Efisiensi sel surya tertinggi terdapat pada sampel TiO2-C 20% sebesar 0.00304%.Kata Kunci: Komposit; TiO2; Karbon Aktif TKKS; Four-Point Probe; Karakteristik I-V
Co-Authors Amelia Andri Yusman Persada Dewi rosa indah Fairus, Fairus Fazrina Saumi Fitra Muliani Kartika Aprilia Putri Miranda Miranda Nurviana Putra, Rachmad Almi Rahmad Almi Riezky Purnama Sari Rika Rosmalinda Salman Salman Saparudin Suri Purnama Febri Teuku Andi Fadlly Teuku Andi Fadlly Teuku Andi Fadly Teuku Fadlon Haser Tisna Harmawan Ulil Amna Ulya Nabilla