Judul: Pendekatan Ekologi-Ekonomi dalam Pengelolaan Hutan Mangrove di Pulau Bengkalis Kabupaten Bengkalis Propinsi Riau
Abstrak: Hutan mangrove merupakan salah satu ekosistem hutan tropis yang memiliki karakteristik yang khas, dan juga merupakan salah satu ekosistem penting didaerah pesisir. Tingkat degradasi yang te jadi dari tahun ketahun di Propinsi Riau khususnya Pulau Bengkalis akan memberikan pengaruh yang sangat penting bagi kehidupan masyarakat disekitarnya. Tujuan penelitian ini adalah untuk mengetahui kondisi ekologi Hutan mangrove dan ekonomi masyarakat pemanfaat hutan mangrove, melihat keterkaitan ekologi-ekonomi untuk kegiatan pengelolaan hutan mangrove dengan menggunakan regresi linier berganda dm analisis Master kemudian memberikan masukan berupa alternatif pemanfaatan kepada pemerintah dalam pengelolaan hutan mangrove. Responden yang digunakan addah pemanfaat kayu untuk kayu arang, kayu bakar dan kayu bangunan yaitu sebanyak 44 responden yang diambil dari Desa Meskom dan Desa Teluk Pambang.
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Judul: Analysis of Management Policy of Mangrove Ecosystem in Bengkalis Residence, Riau
Abstrak: Ekosistem mangrove sering disebutkan sebagai hutan payau atau hutan bakau Ekosistem mangrove merupakan tipe hutan daerah tropis yang khas tumbuh di sepanjang pantai atau muara sungai yang masih dipengaruhi oleh pasang surut air laut dan banyak dijumpai di wilayah pesisir yang terlindungi dari gempuran ombak., Mangrove ecosystem commonly named as brackish forest or bakau forest. Mangrove ecosystem is a type of tropic forest which specially grows along beach edge or river estuary which still influenced by sea spring tide decreasing and most found at coast district where protected from wave crashing.
Keyword: Ecosystems, AHP

Judul: Durability of Specific Immunoglobulin (Ig) Y Againts Influenza and Covid-19 in Sunscreen
Abstrak: The benefit of specific immunoglobulin Y (Ig Y) as an active ingredient in personal care products such as sunscreen has not been properly studied. Our study aims to evaluate the reliability of specific IgY against influenza and the COVID-19 virus in a sample sunscreen product. Specific IgY influenza and COVID-19 viruses were inserted in the sample sunscreen at two concentrations of 0.1% and 0.25%. Three treatments were observed: control (C) sunscreen without IgY, treatment 1 (T1) sunscreen with 0.1% IgY, and treatment 2 (T2) sunscreen with 0.25% IgY. Organoleptic observations were carried out to monitor changes in aroma, color, and texture, and sunscreen sampling was done every week for 6 weeks. The durability of IgY was evaluated using an enzyme-linked immunosorbent assay (ELISA) and a neutralization assay. Organoleptic observation from weeks 1 to 6 showed consistency in its aroma, color, and texture. Enzyme-linked immunosorbent assay and neutralization assay (NA) results of the T1 and T2 groups showed negative results except for sample T1 at week 5, which showed a positive result in the Influenza A ELISA. Based on the results, it seems that IgY concentrations of 0.1% or 0.25% were not optimal. However, this negative result might be due to low concentration of the IgY and the presence of beeswax, which inhibits IgY and causes it to dissolve in distilled water, thus preventing it from being detected in the assay.
Keyword: Immunoglobulin Y, Sunscreen, Influenza, COVID-19, Biological Activity