Judul: Pertumbuhan alam puspa, Schima wallichii (DC.) Korth) pada lahan bekas terbakar di HTI PT. Musi Hutan Persada, Sumatera Selatan
Abstrak: Kebakaran hutan banyak terjadi baik pada hutan alam maupun hutan tanaman industri. Meningkatnya kebakaran hutan diakibatkan oleh meningkatnya pembangunan hutan tanaman industri dan aktivitas sistem perladangan berpindah yang dilakukan masyarakat yang kurang pengetahuan tentang hal tersebut. Puspa merupakan salah satu jenis pohon yang banyak dijumpai di areal Hutan Tanaman Pohonustri (HTI) PT. Musi Hutan Persada, Sumatera Selatan yang tumbuh secara alami. Menurut Tantra, (1981) penyebaran puspa di Pohononesia meliputi daerah Jawa, Kalimantan dan Sumatera yang merupakan jenis asli setempat (native species). Puspa merupakan salah satu jenis pohon dalam ekosistem hutan yang tumbuh pada tanah kering, tingkat kesuburan tanah rendah dengan wilayah penyebaran yang terbatas, sehingga sangat potensial untuk dijadikan dan dikembangkan menjadi hutan tanaman. Kondisi habitat yang seperti itu menyebabkan tegakan puspa sangat peka terhadap gangguan. Gangguan terhadap tegakan, salah satunya pembakaran hutan yang sering terjadi pada hutan tanaman industri.
Keyword: Schima wallichii (DC.)

Judul: Pertumbuhan alami puspa (Schina wallichii Korth.) dan kemampuannya dalam menyerap karbon pada lahan bekas terbakar di hutan sekunder Jasinga, Jawa Barat
Abstrak: Puspa is one of the varieties that are tolerant to fire. Puspa is also suspected to have the ability to absorb carbon. Because of this reason, extensive research is needed to measure the carbon-saving potential, so that, this plant can be used as a reforestation vagetation, especially in formerly burned fields.
Keyword: 

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