Judul: Kajian Sistem Antrian Angkutan dan Pembongkaran Tebu di PT Gunung Madu Plantations, Lampung
Abstrak: Sugarcane is a perishable crops (yield easily down). The yield of sugarcane can be kept down if not immediately in the process although it has been cut down. Freshness is one of the factors that can affect a decrease in the yield of sugarcane. Queue at the post demolition transport sugar cane to the problem, because the delay time of grinding sugar cane. Queue transport arising from random arrival. The purpose of this study : (1) Identify the demolition system in PT Gunung Madu Plantations (GMP) transport cane, (2) Identify the queuing model implemented in PT GMP, and (3) to analyze the queuing model that should be in the process of dismantling transport cane to PT GMP order to ensure an optimum. The method used is based on the time of arrival queuing simulation transport and unloading time for each transport. The data used are secondary data, that is data transport sugarcane population for one day. The results of research on the sugarcane transport disassembly queuing system in PT GMP indicates that the value of the total waiting time, total time in the system, the total idle time, (), (L), (Lq), (W), (Wq), and the probability the server idle (Po) on the simulation results better than the actual condition. It shows that the queuing system on dismantling the postal transport cane to PT GMP still can be optimized so that the lower the potential decrease in the yield of sugarcane 5% -25%
Keyword: transportation, sugar cane, queueing system, demolition

Judul: Simulasi Model Antrian Sistem Transportasi Tebu di PT PG Kebun Agung, Malang
Abstrak: Kehilangan gula yang terjadi pada saat tebang sampai giling (kegiatan transportasi tebu) berkisar antara 5 sampai 25 persen. Kehilangan gula ini terutama disebabkan oleh tertundanya saat giling dan kerusakan tebu oleh Leu conostoc mesenteroides. Kegiatan transportasi tebu dari areal pemanenan ke pabrik dipengaruhi oleh beberapa faktor, yang salah satunya adalah antrian yang terbentuk pada saat alat angkut tebu menunggu dibongkar tebunya ke alat perobawa tebu (meja tabu). Sarana transportasi tebu di PT PG Kebon Agung menggunakan 3 macam alat angkut, yaitu lori, truk dan cikar (pedati). Sarana angkut lori digunakan untuk mengangkut tebu yang berasal dari kebun ke pabrik dan antri pada jalur yang telah disediakan serta menunggu untuk dibongkar. Alat angkut truk dibongkar dengan dua cara, yaitu dibongkar pada alat bongkar truk di pabrik atau dibongkar ke lori di kebun atau di emplasemen luar pabrik. Alat angkut cikar semuanya dibongkar ke lori.
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