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All Journal Jurnal Sains dan Seni ITS JFA (Jurnal Fisika dan Aplikasinya) Jurnal Pengabdian Kepada Masyarakat (Mediteg) Sewagati
Susilo Indrawati
Institut Teknologi Sepuluh Nopember (ITS)
Arts Humanities Economics, Econometrics & Finance Education Engineering Environmental Science Physics Social Sciences

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Pengaruh Resonator Terhadap Bunyi Slenthem Berdasarkan Sound Envelope Agung Ardiansyah; Lila Yuwana; Suyatno Suyatno; Didiek Basuki Rahmat; Susilo Indrawati; Gontjang Prajitno
Jurnal Fisika dan Aplikasinya Vol 10, No 2 (2014)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.55 KB) | DOI: 10.12962/j24604682.v10i2.797

Abstract

Telah dilakukan penelitian tentang pengaruh resonator terhadap bunyi slenthem berdasarkan sound envelope. Penelitian ini bertujuan untuk mengetahui karakteristik gamelan slenthem berdasarkan frekuensi nada 3 dan sound envelope nada tersebut. Dilakukan pengukuran pada nada 3 yang berpengaruh pada tiap-tiap resonator slenthem itu sendiri berdasarkan frekuensi yang muncul pada tiap variasi resonator. Kemudian pengukuran terhadap sound envelope, yang didapatkan dengan variasi resonator yaitu dengan satu resonator dengan waktu tercepat yaitu pada resonator ke-2 sebesar 5,8 sekon, sedangkan waktu terlama pada resonator ke-2 sebesar 10,6 sekon. Tanpa satu resonator dengan waktu tercepat yaitu tanpa resonator ke-4 sebesar 23,3 sekon, sedangkan waktu terlama yaitu tanpa resonator ke-3 sebesar 30,4 sekon.
PENINGKATAN KUALITAS DAN KUANTITAS OLAHAN RUMPUT LAUT COTTONII PADA UKM KELOMPOK TANI MANGROVE WONOREJO RUNGKUT Lila Yuwana; Susilo Indrawati; Iim Fatimah; Sudarsono Sudarsono; Melania Suweni Muntini; Suyatno Suyatno
Jurnal Pengabdian Kepada Masyarakat (MEDITEG) Vol 7 No 1 (2022): Jurnal Pengabdian Kepada Masyarakat (MEDITEG)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Tanah Laut (Politala)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/mediteg.v7i1.112

Abstract

In this community services, cottoni seaweed processed products have been developed which are widely obtained in mangrove forest areas, mangroves, Rungkut Surabaya. Moreover, the production capacity has been increased so that production per day can increase significantly, i.e, to the double if using the equipment provided in this activity. Furthermore, the production process will also be accelerated so that not only the quantity of products per day is improved, but also the production time can be accelerated and the production process will be much more efficient. With the existence of this community services, it has also succeeded in increasing the diversification of processed products made from local raw materials efficiently and with a large production capacity. It has been produced that the production capacity is doubled per day if using the mixer equipment provided by the service team. Furthermore, by using a spinner that is also provided by the community services team, quality improvement is attained by slicing oil for processed fried foods.
Pemetaan Usaha Mikro Kecil dan Menengah Jawa Timur Menuju Sertifikasi Halal Tahun 2024 Nasori Nasori; Susilo Indrawati; Endarko Endarko; Mashuri Mashuri; Gontjang Prayitno; Agus Rubiyanto
Sewagati Vol 6 No 1 (2022)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (159.321 KB) | DOI: 10.12962/j26139960.v6i1.172

Abstract

Pendampingan Usaha Mikro Kecil dan Menengah (UMKM) dimulai dengan pemetaan produk dan sosialalisasi Sistem Jaminan Produk Halal (SJPH) tahun 2021 berdasarkan hasil produksi dalam kategori risk dan non-risk. Kegiatan ini adalah bagian kegiatan masyarakat untuk pendampingan akses sertifikasi halal bagi UMKM Jawa Timur serta dokumen yang perlu disiapkan dalam rangka sertifikasi halal UMKM. Dari 319 jumlah responden dari workshop Jaminan Halal yang diselenggarakan Dinas KUKM Jawa Timur 2021, 17 peserta merupakan pelaku UMKM bidang kerajinan dan usaha lain (toko kelontong) dan 302 peserta merupakan pelaku UMKM bidang industri makanan dan minuman. 35,1% peserta pelatihan belum memiliki izin usaha apapun, yakni sebanyak 112 peserta.
Alat Peraga Edukatif Terkait Mitigasi Gempa Bumi di SDN Candimulyo 1 Madiun Saifuddin Saifuddin; Sungkono Sungkono; Susilo Indrawati; Eko Minarto
Sewagati Vol 7 No 4 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v7i4.541

Abstract

Gempa bumi adalah fenomena yang sering terjadi di Indonesia, namun kejadian gempa secara pasti belum bisa diprediksi hingga saat ini. Terlebih lagi, masih banyak masyarakat Indonesia menghubungkan fenomena kegempaan dengan mitos-mitos yang belum tentu kebenarannya. Oleh karena itu, tim pengabdi dari Departemen Fisika, Institut Teknologi Sepuluh Nopember (ITS) melaksanakan kegiatan sosialisasi alat peraga edukatif tentang gempa bumi untuk siswa kelas 6 di SDN Candimulyo 1 Madiun, Jawa Timur, sehingga fenomena kegempaan lebih mudah dipahami. Kegiatan tersebut juga melibatkan mahasiswa KKN. Kegiatan ini diharapkan dapat menanamkan literasi tentang kegempaan pada usia dini beserta mitigasi gempa bumi untuk pengurangan risiko bencana (disaster risk reduction). Tim pengabdi menyerahkan alat peraga edukatif tersebut dan modul kepada SD tersebut sehingga dapat digunakan sebagai alat pembelajaran berkelanjutan
Effects of The Addition of Carbon on Abaca Fiber and PVA Composite Materials Based on Mechanical and Acoustic Properties Susilo Indrawati; Syabania R A; Linda Silvia; Lila Yuwana; Mochamad Zainuri
Jurnal Fisika dan Aplikasinya Vol 19, No 1 (2023)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v19i1.14534

Abstract

Abaca is a kind of banana that grows in Indonesia. Abaca banana product utilized in this research is a fiber that obtained from the midrib of the stem. Henceforth, abaca fiber is processed to be the form of membranes. The purpose of the study are to determine the physical, mechanical and acoustic properties of abaca fiber composite materials as fillers and polyvinyl acetate (PVA) as a matrix. The ratio of composite materials of abaca fibers and PVA is 1:10. The variations used in producing membranes are the addition of carbon powders by 0%, 2%, 4%, 6% and 8%. The characteristics carried out include testing of density, morphology, tensile strength and sound absorption coefficient. The results reveal that the highest density is obtained from the sample of 0% carbon, i.e., 1.026 gr/cm3. Furthermore, the mechanical properties testing shows the highest yield stress value in samples with 4% carbon of 476.8 MPa and the highest Young modulus in samples with 8% carbon is 7905.1 MPa. Therefore, the addition of carbon could improve the mechanical properties of composites materials. Based on the measurement of sound absorption coefficient using an impedance tube with 1 microphone, the highest value can be attained from the sample of 4% carbon, namely 0.211 which shows the sample is more reflective. The material is reflective because the amount of abaca fiber used is less than PVA. The diameter of pores formed between the fiber and PVA are very small which could cause the absorption coefficient value to be lower. Therefore, further research will focus on the addition of abaca fiber content in composite materials. The positive point in this study is that the addition of carbon with 4% and 8% provides optimal mechanical ability.
Co-Authors A. Achaddiad Agung Ardiansyah Agus Rubiyanto Bachtera Indarto, Bachtera Didiek B Rahmat Didiek Basuki Rahmat Endarko Endarko Fatimah, Iim Gontjang Prajitno Gontjang Prayitno Keysha Wellviestu Zakri Keysha Wellviestu Zakri Lailatul Inayah Lila Yuwana Linda Silvia, Linda Mashuri Mashuri Maslahah, Maslahah Muthmainnah, Melania Suweni Muntini Novanto Adisasmita Kusuma S Suyatno Saifuddin Saifuddin Santika, Beta Bayu Sudarsono Sudarsono Sunarno, Hasto Sungkono Sungkono Suyatno Suyatno Suyatno Suyatno Suyatno Suyatno suyatno suyatno Suyatno Suyatno Suyatno, Suyatno Suyatno, Suyatno Syabania R A Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad