Natural fibres are fibre that can be directly obtained from an animal, mineral, or vegetable sources. Recently natural materials are becoming a good alternative for synthetic material as they provide good health to a greener environment. This aim of this study to investigate and compared the acoustic characteristics of three natural fibres; Kenaf fibre(Hibiscus Cannabinus), Ijuk fibre(Arenga Pinnata), and Coconut coir fibre, where each material is qualified for acoustical absorption. During the processing stage, each fibre is reinforced with 60:40 ratio of pure latex separately. The fibres are then compressed after the pure latex treatment into circular samples, of 28 mm and 100 mm diameters respectively. The thickness of each sample is fixed at 50mm. The acoustical performances were evaluated by using an impedance tube instrument. This study also investigates the effect of air gap of 10mm and 50mm in the sound absorption performance. The results show that, all the three fibres have reached an optimum level of sound absorption value of more than 0.7. The frequency peak value of Kenaf is obtained in a range of 700 Hz – 800 Hz, while for coconut coir is at 1000 Hz – 1075 Hz frequency range. Only Ijuk has obtained the highest frequency range of 3200 Hz – 3400 Hz. The results demonstrate that these three fibres are a promising light and environment-friendly sound absorption material as they are ready to replace the common synthetic fibre.
Tujuan penelitian ini adalah mengembangkan media pembelajaran inovatif mata kuliah 1000 persalinan. Metode penelitian ini merupakan jenis penelitian dan pengembangan, pengembangan media pembelajaran audio visual berani melalui YouTube. Sampel peneltian 30 mahasiswa Sekolah Tinggi Ilmu Kesehatan Jayakarta. Pengumpulan data menggunakan format checklist, prosedur, dan evaluasi media pembelajaran. Analisis data kualitatif dan kuantitatif. Hasil penelitianini telah berisi video pembelajaran prosedur-prosedur persalinan. Hasil evaluasi siswa menunjukkan 96,7% menyetujui video pembelajaran membantu memahami materi perkuliahan dan membuat mahasiswa lebih aktif mengikuti kegiatan pembelajaran. 93.3% mendukung lebih bersemangat mengikuti kegiatan pembelajaran, 96.7% mendukung Video membantu mahasiswa mampu melakukan redemonstrasi sesuai video contoh. Seluruh mahasiswa (100%) menyetujui Video membantu mempraktekkan prosedur yang dilakukan secara mandiri. mahasiswa (96.7%) menyetujui video yang percaya diri saat ujian praktek karena kesempatan untuk dapat latihan mandiri. sebagian besar mahasiswa (63,3%) tidak merasa terbebani dengan penugasan membuat video redemonstasi prosedur kolaborasi maternitas dan 63.Kesimpulan dari penelitian ini bahwa telah tersusunnya video demonstarsi prosedur perawatan membantu mahasiswa untuk mendemonstarsikan kembali prosedur yang telah diajarkan. Rekomendasi penelitian ini adalah melanjutkan tahapan selanjutnya untuk pembuatan Modul Prosedur 1000 Maternitas.
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