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All Journal Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology POSITRON PRISMA FISIKA Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Perikanan dan Kelautan Journal of Applied Geospatial Information JIPF (Jurnal Ilmu Pendidikan Fisika) Acta Aquatica: Aquatic Sciences Journal BULLETIN OF THE MARINE GEOLOGY JURNAL PENGABDI Jurnal Laut Khatulistiwa Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Marine Kreatif Bakti Budaya: Jurnal Pengabdian kepada Masyarakat Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Manfish Journal Bulletin of Chemical Reaction Engineering & Catalysis Bina Bahari : Jurnal Pengabdian Kepada Masyarakat Oseanologia

Risko, Risko

Marine Science And Fisheries Department, Politeknik Negeri Pontianak

Author-ID : 1138483

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences Other

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SEBARAN SEDIMEN BERDASARKAN ANALISIS PARAMETER UKURAN BUTIR DI PERAIRAN MUARA SUNGAI SAMBAS KALIMANTAN BARAT Warsidah Warsidah; Risko Risko; Dicky Wahyuda Saputra; Muliadi Muliadi; Zan Zibar; Heni Susiati
JURNAL GEOLOGI KELAUTAN Vol 19, No 2 (2021)
Publisher : Pusat Penelitian dan Pengembangan Geologi Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/jgk.19.2.2021.723

Studi tentang sebaran sedimen dasar laut ini dilakukan dengan tujuan untuk mengetahui persentase nilai fraksi, jenis dan parameter statistik ukuran butir. Penelitian ini dilakukan pada bulan Maret – April 2021 di perairan muara Sambas, Kecamatan Pemangkat, Kalimantan Barat. Hasil persentase fraksi sedimen dasar laut dari pasir di lokasi ini diperoleh nilai rata-rata sebesar 23,11 %, lanau 63,33 % dan lempung 13,56 %. Dari hasil tersebut secara keseluruhan didapatkan sebaran jenis sedimen dasar di perairan ini didominasi oleh lanau. Berdasarkan parameter ukuran butir sedimen dasar diperoleh nilai ukuran butir rata-rata (Mz) berkisar antara 1,04 – 2,47. Hasil tersebut menunjukkan bahwa pemusatan sedimen di lokasi penelitian berada pada klasifikasi pasir halus (fine sand) dan pasir sedang (medium sand). Kemudian nilai sortasi yang diperoleh dari seluruh stasiun berkisar antara 0,93 - 1,50 dengan klasifikasi terpilah sedang (moderately sorted) dan terpilah buruk (poorly sorted), nilai skewnes berkisar antara 0,54 – 1,45 dengan klasifikasi condong sangat halus dan nilai kurtosis pada setiap stasiun berkisar antara 0,61 – 1,17 dengan klasifikasi platycuric, mesokurtic, very platykuric dan leptokurtic.

STATISTICAL PARAMETERS ANALYSIS OF SEDIMENT GRAIN SIZE FROM RAYA RIVER BENGKAYANG REGENCY, WEST BORNEO Muhardi Muhardi; Yusuf Arief Nurrahman; Risko Risko; Muliadi Muliadi; Kanti Rahayu; Heni Susiati
BULLETIN OF THE MARINE GEOLOGY Vol 36, No 2 (2021)
Publisher : Marine Geological Institute of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/bomg.36.2.2021.726

The study of the statistical analysis parameters of grain size in the waters of Sungai Raya was carried out in order to understand the characteristic of the sediment in the river and coastal areas. The grain size by sieving method, and analyze the statistical parameters including the average grain size, sorting, skewness, and kurtosis. Sediment samples were acquired from six stations with each station consisting of three sampling points representing river west bank, river midstream, river east bank, and the coastal area consisting of five stations. The results of the sediment analyses showed that the average grain size in the river ranges from 1.23 to 2.77 mm, and on the beach area is between 1,52 - 2,59 mm, classified as fine sand, medium sand, very fine sand, and coarse sand with predominant fine sand in all stations. The results of the statistical parameter analysis of the grain size of the bottom sediment in the waters of Sungai Raya exhibit the average diameter value ranging from 1.23 to 2.77 mm, classified as fine sand to medium sand. This value indicates that the type of sediment in this location is dominated by silt with grain sizes ranging from < 0.05 - 0.002 mm. The sorting value ranges from 0.14 to 1.59 mm, categorized into moderately sorted, moderately well-sorted, very well sorted, and poorly sorted classes. The average value of skewness is 2.17 with the classification of the bed load being very fine and kurtosis value ranges from 0.72 to 1.67 indicates the classification in these waters is platycuric, mesokurtic, leptokurtic, and very leptokurtic. These finding concluded that in the study area there is a variation in the angularity of the sediment grains due to the different hydrodynamic processes

SOSIALISASI PROTOKOL KESEHATAN DALAM UPAYA PENCEGAHAN PENYEBARAN COVID-19 KEPADA MASYARAKAT PESISIR NATUNA Muhardi Muhardi; Risko Risko; Riza Adriat; Mega Sari Juane Sofiana; Suhardi Irawan; Jannati Jannati
Jurnal Marine Kreatif Vol 5, No 2 (2021): Marine Kreatif
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmk.v5i2.4481

Corona Virus Disease 2019 (Covid-19) is an infectious disease that infects the respiratory tract. The spread of the Covid-19 infectious disease outbreak was so fast that it reached the territory of Indonesia, including in one of the coastal areas of Natuna Regency, Riau Islands Province. The purpose of this community service activity is to socialize the Covid-19 community in the coastal area of Pangkalan Village, Serasan District, Natuna Regency, Riau Islands Province, and Bandarsyah Village, Natuna Islands in an effort to prevent the spread of Covid-19 and increase public awareness about the dangers of Covid-19. This community service activity went smoothly and received a very good response and support from village officials and the local community. The results of this activity provide information on the importance of maintaining health protocols to increase awareness about the dangers of Covid 19 and also the distribution of basic necessities to people in need. This is indicated by the enthusiasm of the community to participate in this activity.

PENGOPTIMALAN PERAN MAHASISWA PADA MASA PANDEMI COVID-19 MELALUI KEGIATAN KKM FMIPA UNTAN Muhardi Muhardi; Yudhi Yudhi; Risko Risko; Hendra Perdana; Andi Hairil Alimuddin; Hasanuddin Hasanuddin; Firman Saputra; Ferdy Febriyanto; Suhardi Suhardi
Abdimas Galuh Vol 4, No 1 (2022): Maret 2022
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v4i1.7138

Kegiatan Kuliah Kerja Mahasiswa (KKM) Tahun 2020 dilaksanakan oleh Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) Universitas Tanjungpura (Untan) secara daring agar memperhatikan protokol kesehatan dalam pencegahan Corona Virus Disease 19 (COVID-19). Kegiatan ini dilakukan pada semester ganjil tahun 2020/2021, dari tanggal 6 Juli – 20 September 2020. Mahasiswa yang mengikuti kegiatan KKM sebanyak 242 orang, yang berasal dari 9 program studi di FMIPA Untan, dan tersebar di 5 propinsi yaitu Kalimantan Barat, Kepulauan Riau, DKI Jakarta, Jawa Timur, dan Sumatera Utara. Peserta yang melaksanakan program kelompok yaitu 95% digitalisasi pembelajaran untuk sekolah dasar dan menengah, 75% sosialisasi dan edukasi pencegaham covid-19, 71% penyaluran bantuan sosial bencana alam dan masyarakat tidak mampu, 37% penguatan usaha ekonomi masyarakat sebesar, dan 37% program perencanaan dan pengembangan desa. Sedangkan peserta yang melaksanakan program individu yaitu 75% pelayanan masyarakat, 67% layanan edukasi, dan 44 % membantu program pemerintah daerah.

EFFECT OF COOKING METHODS ON THE REDUCTION OF LEAD (Pb) CONTENT IN KEPAH (Polymesoda erosa) SHELLS Warsidah Warsidah; Mega Sari Juane Sofiana; Agus Yuliono; Lucky Hartanti; Dwi Gusmalawati; Ikha Safitri; Risko Risko; Jannati Jannati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 18, No 3 (2022): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.18.3.%p

Kepah shells have important economic value and are widely used as food ingredients because they contain high nutritional content. Heavy metals that enter the waters will generally be accumulated in sediments and absorbed by biota. As filter feeder, Kepah accumulate heavy metals from the environment that toxic to humans. This study aimed to determine the effect of cooking methods on the concentration of lead (Pb) in Kepah shell. The measurement of Pb content was conducted according to SNI 2345.5-2011 by Atomic Absorption Spectrophotometer (AAS). Result showed that different cooking methods influenced the Pb content in Kepah shells. Frying and boiling processes reduced the Pb concentration of 46.34% and 31.48%, respectively. According to the result, frying suggested as the best cooking method to provide healthful food for consumption.

Peningkatan Keterampilan dan Kesejahteraan Masyarakat Pulau Kabung melalui Pelatihan Pembuatan Sirup Pala Warsidah warsidah; Sukal Minsas; Muliadi Muliadi; Anthoni B Aritonang; Apriansyah Apriansyah; Arie A. Kushadiwijayanto; Mega SJ Sofiana; Yusuf Nurrahman; Risko Risko; Sy. Irwan Nurdiansyah; Ikha Safitri; Shifa Helena
Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Vol 1 No 1 (2021)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang

The coastal area of Kabung Island is an area of Karimunting Village, Bengkayang Regency, which has a population of around 300 families, whose main livelihood is fishing. Water conditions are very risky due to bad weather, such as strong waves, making it impossible to go to sea, causing new activities for people to plant gardens by utilizing makeshift land and plantation commodities along the hills on the island. Apart from coconuts and cloves, nutmeg is a plantation commodity that is widely available in this region. The training for the processing of syrup from the flesh of the nutmeg for the people of Kabung Island is to improve the skills and welfare of the people of Kabung Island who have previously carried out simple processing of nutmeg by drying the seeds and making candied nutmeg. The training is carried out by direct processing of nutmeg in front of the Kabung island community who are also participants in this activity. This activity was attended by 50 participants consisting of 15 men and 35 women. Based on the questionnaire before the activity started, it showed that 40% had already known and read about the processing of nutmeg syrup, while 30% of the participants had made simple syrup preparations from nutmeg pulp. Then the evaluation conducted after the activity showed that 80% of the participants were able to make good nutmeg syrup, including packaging and labeling of the resulting products.

Pengaruh Gelombang pada Perubahan Garis Pantai di Perairan Batu Burung Singkawang, Kalimantan Barat Apriansyah Apriansyah; Arie Antasari Kushadijayanto; Risko Risko
POSITRON Vol 9, No 1 (2019): May Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Kawasan Batu Burung Singkawang merupakan perairan yang berhadapan langsung dengan laut Natuna yang mempunyai perbedaan kondisi geografis dan merupakan wilayah dengan topografi yang cukup datar dengan kemiringan antara 0-8% pada ketinggian antara 0-12 meter di atas permukaan laut. Penelitian ini bertujuan untuk menganalisis distribusi parameter tinggi, frekuensi dan energi gelombang yang terjadi serta menganalisis perubahan garis pantai yang terjadi di perairan Batu Burung Singkawang. Penelitian ini dilakukan pada bulan Juli-Agustus 2018 di peraian Batu Burung Singkawang, Kalimantan Barat. Data gelombang, arus dan pasang surut diperoleh berdasarkan observasi lapangan selama 15 hari. Selanjutnya data citra satelit yang digunakan adalah Citra Landsat 8 dengan interval dari tahun 2008-2017 dan untuk data kecepatan angin diperoleh dari European Centre for Medium-Range Weather Forecasts (ECMWF) dengan interval waktu yang sama. Hasil analisis menunjukkan tinggi gelombang signifikan (Hs) diperoleh nilai ketinggian maksimal hingga 0.13 meter dengan frekuensi gelombang antara 0.12 – 0.71 Hz dan energi gelombang yang didapatkan sebesar 21.87 Joule/m. Besarnya energi gelombang yang dihasilkan mengakibatkan perubahan garis pantai di lokasi penelitian ini. Hasil ini dibuktikan dengan analisis berdasarkan data citra satelit bahwa perubahan garis pantai pada interval waktu 2008-2017 yang dibagi menjadi dua grid area (grid A dan B) dimana terjadi pergeseran garis pantai ke arah darat berkisar antara 3.8-16.4 meter dan akresi dengan jarak garis pantai ke arah laut berkisar antara 1-39.8 meter sepanjang 2.03 km garis pantai (grid A). Kemudian pergeseran garis pantai ke arah darat berkisar antara 2.6-36.6 meter dan akresi dengan jarak garis pantai ke arah laut berkisar antara 3.2-18 meter sepanjang 2.12 km garis pantai (grid B).

Pengukuran Kecepatan Arus Permukaan Dengan Metode Langrangian di Estuari Mempawah Richi Riandi; Apriansyah Apriansyah; Risko Risko
Jurnal Kelautan, Lingkungan, dan Perikanan Vol 3 No 1 (2022): MANFISH JOURNAL
Publisher : Jurusan Ilmu Kelautan dan Perikanan Politeknik Negeri Pontianak

Estuari Mempawah merupakan salah satu perairan estuari yang terletak di batas wilayah antara Kecamatan Mempawah Hilir dan Kecamatan Mempawah Timur Kabupaten Mempawah. Penelitian dilakukan pada tanggal 23, 26 Februari dan tanggal 3-4 Maret 2019. Penelitian ini bertujuan untuk mengetahui pergerakan arus permukaan di estuari Mempawah. Proses penelitian diawali dengan pengukuran pasang surut yang diambil secara kontinu selama 30 hari dengan interval pengukuran setiap satu jam. Data pasang surut digunakan sebagai acuan dalam penentuan kondisi pada saat pelepasan drifter otomatis. Hasil yang didapatkan menunjukkan drifter otomatis berfungsi dengan baik, hal ini didasarkan pengukuran arus menggunakan drifter otomatis memiliki perbedaan yang sangat kecil dengan hasil pengukuran mengunakan layang-layang arus sebesar 3,6 %. Data yang terekam oleh drifter otomatis berupa titik koordinat dengan interval waktu perekaman setiap 65 detik. Nilai rata-rata kecepatan arus maksimum sebesar 0,773 m/s dan kecepatan arus minimum 0,456 m/s pada tanggal 23 Februari, kecepatan arus maksimum 0,540 m/s dan kecepatan arus minimum 0,385 m/s (26 Februari), kecepatan arus maksimum 0,807 m/s dan kecepatan arus minimum 0,296 m/s (3 Maret) dan kecepatan arus maksimum 0,881 m/s dan kecepatan arus minimum 0,502 m/s (4 Maret).

Smart Island Lemukutan Through WebGIS Based Benthic Habitat Data Collection Zan Zibar; Robin Saputra; Adityo Raynaldo; Supriyatno Supriyatno; Budhi Agung Prasetyo; Risko Risko; Hendrawan Hendrawan
Journal of Applied Geospatial Information Vol 7 No 2 (2023): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v7i2.6512

Benthic habitats provide a variety of functions, both ecological and economic, for life in coastal areas and small islands. Smart islands or smart islands are currently being implemented in a number of small island developing countries with one of the challenges being technology based. One technology that can be used in management, including monitoring and supervision of resources, is the Geographic Information System (GIS). The synergy of GIS data and the help of the latest multimedia software technology is necessary to help display an interactive and easily accessible, in this case, webGIS technology. This research was carried out on Lemukutan Island which consists of 6 research stations, each of which has a distribution of coral reef location points based on coordinates. Based on the results of the analysis of the percentage of benthic habitats in the study locations ranging from bad to good categories. Furthermore, the data from field observations and analysis results are displayed on the Lemukan Island smart island website and can be accessed at https://webgissmartisland.com. Regular monitoring of coral reefs is very important and needs to be done to help input data for Smart Island Lemukutan so that it becomes a catalyst in realizing a smart island ecosystem in West Kalimantan Province by providing benthic habitat maps via webgis services and actualizing technological development in coastal areas and small islands. smart island based through the smart destination concept by integrating benthic habitat information via WebGIS services.

Fe-doped TiO2/Kaolinite as an Antibacterial Photocatalyst under Visible Light Irradiation Anthoni B. Aritonang; Eka Pratiwi; Warsidah Warsidah; S. I. Nurdiansyah; R. Risko
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 2 Year 2021 (June 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.2.10325.293-301

In this work, undoped and Fe-doped TiO2 immobilized on kaolinite surface was successfully synthesized by sol-gel method with various Fe concentrations (0.05, 0.125, and 0.25 wt%). The eﬀects of Fe doping into TiO2 lattice were thoroughly investigated by a diffuse reflectance UV-visible (DRS) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The optical band gap of undoped and Fe-doped TiO2/kaolinite is red shifted with respect to the incorporation of Fe3+ into the structure of TiO2 resulted band gap. The FTIR spectra shows a shift of peak at the wave number at 586 cm−1 and 774 cm−1 which is attribute of the Fe−O vibration as an indication of the formation of Fe-TiO2 bonds. Incorporation of Fe3+ cation into the TiO2 lattice replacing the Ti4+ ions, which induced a perturbation in anatase crystal structure, causes the change in the distance spacing of the crystal lattices dhkl(101) of 8.9632 to 7.9413. The enhanced photocatalytic performance was observed for Fe-doped TiO2/kaolinite compared with TiO2/kaolinite with respect to Escherichia coli growth inhibition in solution media under visible light irradiation. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Co-Authors . Apriansyah . Hasanuddin A. Kushadiwijayanto, Arie A.A. Ketut Agung Cahyawan W A.Nurrahman, Yusuf Adinur, Rizki Suanda Adityo Raynaldo Afdal Afdal Alin, Yulius Andi Hairil Alimuddin ani, april lia Ansari, Aji Anthoni B Aritonang Arie A. Kushadiwijayanto Arie Antasari Kushadijayanto Arie Antasari Kushadiwijayanto Arif Rahman Aritonang, Anthoni B. Aritonang, Anthoni Batahan Azrul Azwar Baharudin, La Boni Pahlanop Lapanporo Budhi Agung Prasetyo Caksana, Muhamad Uwais Calvin, Silvanus Dicky Wahyuda Saputra Dwi Gusmalawati Eka Pratiwi Febriyanto, Ferdy Firman Saputra Fitriani Fitriani Gunawan, Topang Hasanuddin Hasanuddin Helena, Shifa Hendra Perdana Hendrawan Hendrawan Heni Susiati Heni Susiati Heni Susiati Heni Susiati Heni Susiati Idawati, Nora Ikha Safitri Irwan Nurdiansyah, Sy. Jannati Jannati Jannati Jannati Jingga, Fitriani Julkipli Julkipli, Julkipli Jumadi Sudarso Kanti Rahayu Karina Elwanda Saputri khusadiwijayanto, arie antasari Kushadiwijayanto, Arie Antasari La Baharudin, La Baharudin Lestari, Putri Riya Lucky Hartanti Mega Sari Juane Sofiana Mega SJ Sofiana Minsas, Sukal Muhardi Muliadi Muliadi Muliadi Muliadi Muliadi Muliadi Muliadi Nora Idiawati Nurdiansyah, Sy. Irwan Nurdiansyah, Syarif Irwan Nurrahman, Yusuf A Piani Piani Pratama, Prasetya Rahmat Pratama, Septian Surya Pratiwi, Nabella Dwi Prayitno, Dwi Imam Purnamawati Purnamawati Putri, Tiara Nusa Rahmat, Muhammad Farhan Rahmawan, Raditya Ramadhani, Ahijrah Ramat, Muhammad Farhan Rasidi, Rasidi Rhedyanto, Teodorus Richi Riandi RIDHO KURNIAWAN, RIDHO Riza Adriat Robin Saputra Rofiqa, Zulfa Romiyansah, Romiyansah S. I. Nurdiansyah S.J Sofiana, Mega Saadi, Saadi Sadri Sadri Sadri, Sadri Saputra, Dicky Wahyuda Sari, Lingga Permata Setiawan, Ho Putra Simbolon, Nurmala E Slamet Jumaedi, Slamet Suhardi Suhardi Irawan Sujarwan, Fahrul Sukal Minsas Sulastri Arsad Supriyatno Supriyatno Sy. Irwan Nurdiansyah Syamsudin, Syam Taufik Nurcahyanto Tumion, Frangky Tumion, Frangky F Venansius, Venansius Warsidah Warsidah Warsidah warsidah Warsidah Warsidah Warsidah Warsidah Warsidah, Warsidah Yoga Satria Putra Yudhi Yuliono, Agus Yundari, Yundari Yusuf Arief Nurrahman Yusuf Nurrahman Zan Zibar Zibar, Zan Zulfian Zulfian `B Aritonang, Anthoni

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