Judul: Penyusunan Model Simulasi Pemanfaatan Hutan Alam Produksi Secara Lestari (Studi Kasus di Areal HPH PT. Sari Bumi Kusuma Kalimantan Barat)
Abstrak: Pengelolaan hutan produksi lestari merupakan pengelolaan hutan yang dapat memproduksi hasil hutan baik kayu maupun non kayu secara berkelanjutan dengan tidak mengganggu fungi ekosistem hutan serta menjamin fungsi sosial ekononi dan budaya masyarakat. Dengan demikian pengertian lestari tidak hanya mencakup kelestarian tegakan hutan saja tetapi juga termasuk kelestarian ekonomi perusahaan dan sosial ekonomi masyarakat. Untuk memunngkinkan perencanaan pemanfaatan hasil hutan kayu maupun non kayu secara menyeluruh dan optimal diperlukan metode yang sesuai untuk mempelajari ekosistem hutan yang kompleks dan hal-ha1 yang terkait dengannya.Salah satu metode mutakhir yang dapat dilaksanakan ialah analisis sistem dengan simulasi sistematikA.
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Judul: Pemodelan Simulasi Pengelolaan Rutan Alam Produksi Lestari di PT. Sari Bumi Kusuma Kalimantan Tengah
Abstrak: Sustainable management of natural production forests should pay attention to economic adjust, ecological and social. Production is influenced by the security of land where trees grow in the absence of forest disturbance such as encroachment, shifting cultivation and fires that reduce the production company. If only in the form of forest disturbance shifting the wider fields tolerance is 1.01 hectares/ household, and 18.2 acres/household only if the encroachment. If only fires tolerance 185.53 hectares/year. When considering these three factors, the widespread tolerance of 0.78 acres of farm/household, clearing 0.67 acres/family and fires 181 acres/year. Income if the company manages timber only increased to Rp36 947 078 301 at the end of the concession period. If only utilize NTFPs income of Rp628 995 658 174 and Rp665 942 736 475 if a combination of both. Income when fully manage NTFPs Rp733 603 161 612, whereas if the labor of Rp3 168 503 438.
Keyword: sustainable forest management, NTFPs, income, forest disturbance

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