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All Journal Jurnal Segara ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua EBAMUKAI; JURNAL PENGABDIAN ILMU PENGETAHUAN DAN TEKNOLOGI
Muhammad Hisyam
Universitas Cenderawasih
Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology Physics Public Health Social Sciences

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Acoustic Wave Propagation Patterns in the Ocean Column Fachri Ali Badihi; Sri Pujiyati; Ayi Rahmat; Steven Solikin; Muhammad Hisyam
Jurnal Segara Vol 18, No 3 (2022): December
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i3.11453

Abstract

Temperature and salinity play a role in the speed of sound and the process of sound propagation of acoustic waves in the water. Research on the propagation of sound waves in the ocean is a very interesting topic to do because it has many applications, including in underwater wireless communication systems and maritime security. This study aimed to analyze the propagation of acoustic waves in different water depths. The modeling was carried out with flat wave characteristics, in which the bathymetry characteristics of the seawater were ignored. In this ray path simulation, the frequency of 5.3Hz was used at 3 stations with different seawater depths in the Makassar Strait using temperature and salinity data downloaded from marine.coperniccus.eu data. The movement pattern of the acoustic waves was simulated using the Bellhop method. The ray tracing simulation results showed significant differences at the three locations. This was influenced by several factors, including the condition of the seawater environment, the placement of the transducer, the speed of sound, and the depth. Shallow seawater would show a more complicated ray path than deep seawater. The greater the angle of the half beam used, the greater the distance of the range of each beam of light will be so that the reflection of the resulting beam of light covers each column of seawater. The closer the distance between the resulting ray paths, the smaller the energy lost.
Perbandingan Stok Karbon Mangrove Rhizophora mucronata di Kampung Enggros dan Entrop, Jayapura, Papua. Muhammad Hisyam; Ervina Indrayani; John D Kalor; Ida Waum
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 6 No 1 (2023): ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua
Publisher : Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/acr.v6i1.2880

Abstract

Mangrove ecosystems have an important role as a filter for CO2 gas that is in the air through the process of photosynthesis. This is why the existence of mangrove forests is of great concern in maintaining the carbon cycle in the world. Most of the mangrove forests in Indonesia are in the Papua region, which accounts for one-third of the total area of mangrove forests in Indonesia. One of the mangrove forest areas that is quite thick is in the Youtefa Bay area in Enggros and Entrop Villages with Rhizophora mucronata species found. This research was conducted by measuring the carbon content using an allometric formula that utilizes stem diameter values. This study showed that the biomass of Rhizophora mucronata in Entrop Village was more than that of Enggros Village, which was 1063.44 Kg. Carbon content and absorption also showed results that were directly proportional to the biomass in Entrop Village at 19.4616 and 71.42 Kg/m2. The ratio of the difference in biomass and carbon content between the two villages also shows a difference of 14%.
PELATIHAN PENGOLAHAN LIMBAH CANGKANG TELUR MENJADI PUPUK ORGANIK DI KAMPUNG YOKA DISTRIK HERAM SEBAGAI UPAYA PENANGGULANGAN PENCEMARAN PERAIRAN DI DANAU SENTANI Frans Augusthinus Asmuruf; Nada Pertiwi Papriani; Sitti Rosnafi’an Sumardi; Deppa Ringgi’; Suarni. S; Muhammad Hisyam; Nicea Roona Paranoan; Lolita Tuhumen; Santinia Andiva Pramesti; Feby Seru
EBAMUKAI PAPUA JURNAL PENGABDIAN ILMU PENGETAHUAN DAN TEKNOLOGI
Publisher : Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/ejpipt.v1i1.121

Abstract

Cangkang telur merupakan salah satu limbah rumah tangga yang sangat mudah dijumpai, trmasuk di Kampung Yoka Distrik Heram yang terletak di dekat Danau Sentani. Pengolahan limbah cangkang telur menjadi pupuk organik dapat menjadi salah satu upaya penanggulangan pencemaran Danau Sentani. Alternatif ini dipilih karena cara pengolahannya sangat mudah dan praktis. Siapapun bisa melakukannya di rumah. Pengolahan limbah cangkang telur menjadi pupuk organik dapat dilakukan melalui tahap persiapan yang terdiri dari : mengumpulkan limbah cangkang telur, mencuci cangkang telur hingga bersih, mengeringkan cangkang telur dibawah sinar matahari kurang lebih selama 2 hari, dan mengahaluskan cangkang telur kering menggunakan blender hingga menjadi tepung cangkang telur. Selanjutnya, masuk tahap pengolahan yang dapat dilakukan dengan tiga cara yaitu : (1) Menaburkan tepung cangkang telur yang telah dibersihkan di atas tanah sekitar batang tanaman. (2) Mencampurkan 2-3 sdm tepung cangkang telur ke dalam media tanam yang telah dibuat sebelumnya (ukuran pot dengan tinggi 30-35 cm). dan (3) Mencampurkan 1 sdm tepung cangkang telur dengan 1 sdm cuka. Selanjutnya mengencerkannya dengan 1 liter air. Pengolahan limbah cangkang telur. Pelaksanaan pengabdian menggunakan metode ceramah, diskusi, tanya jawab dan metode praktik pembuatan pupuk organik dari limbah cangkang telur dan dilaksanakan dalam 4 (empat) tahap, yaitu perencanaan, persiapan, pelaksanaan, dan evaluasi. Masyarakat Kampung Yoka yang hadir dalam kegiatan pelatihan yang terdiri dari pekerja/ petugas Puskesmas Yoka, ibu rumah tangga dan beberapa lansia menjadi memahami bahwa limbah cangkang telur banyak manfaatnya untuk tanaman. Masyarakat Kampung Yoka dapat memahami dan dapat meningkatkan keterampilan mengolahan limbah cangkang telur menjadi pupuk organik sebagai upaya penaggulangan pencemaran perairan di Danau Sentani.
Co-Authors Ayi Rahmat Deppa Ringgi’ Ervina Indrayani Fachri Ali Badihi FEBY SERU Frans Augusthinus Asmuruf Ida Waum John D Kalor Lolita Tuhumen Nada Pertiwi Papriani Nicea Roona Paranoan Santinia Andiva Pramesti Sitti Rosnafi’an Sumardi Sri Pujiyati Steven Solikin Suarni. S