Judul: Desain Kapasitas Produksi Listrik Berdasarkan Debit Andalan Berkelanjutan di Daerah Aliran Sungai Cidanau.
Abstrak: Planning development Project of Micro Hydro Power (PMHP) is one of the important thing in the allocation of water resources in rural areas. Planning PMPH observed located in Kubang Baros Village, Serang District, Banten. In planning PMPH, besides planning design capacity of the production electricity, need to know the condition of existing allocation of water resources in the upstream areas. Allocation of water resources accounted by predict water demand for region subdistrict Cinangka, Padarincang and Ciomas in 2050. Calculation water needs aims to the amount of water available can sustain to be used in a long time. So, the allocation for water resources can be run in sustainable and stable. Based on the results of the study determined that the Cidanau Watershed produce reliability discharge equal to 3.51 m3/sekon, with a prediction of water requirement in 2050 is 2.1 m3/sekon. The conclusion for this planning design of electrical production capacity produces electrical power equal to 387.91 kW.
Keyword: Reliability Discharge, Electrical Design Capacity Production

Judul: Techno-economic analysis of micro hydro at energy self-sufficient village of Kampung Lebakpicung, Hegarmanah, Cibeber, Lebak, Banten Province
Abstrak: Model of Energy Independent Village based on micro hydro has been implemented in Kampung Lebakpicung, Hegarmanah, Cibeber, Lebak, Banten Province. This area located directly adjacent to the National Park area of Halimun Salak Mountain. Three main issues have been proposed in the development of energy independent village based on micro hydro namely providing the electricity for local community, developing economic productive using the idle electricity as well as coserving the forest area near village through reforestration. All of three issues have been running well since 2 years ago and this program was strongly supported by local community. Institution based on the local community initiative has also been developed to take responsibility on the sustainability of micro hydro project. This institution has responsibility to run the operational of the micro hydro and to develop the utilization of idle electricity during day time for productive economic activity for local community. The objectives of this study were: 1) to analyze cost of electricity produced by micro hydro. The cost analysis includes kW of electricity could be generated and the price per kW which was based on the operational cost and maintenance cost, 2). to determine the energy cost must be spent by households before and after micro hydro project. Maintenance and operational cost was analyzed in order to consider the cost must be paid by each household. The study was focused on the collection of data i.e. social economic, potency of electricity, technical data of micro hydro. It was found that the potency of micro hydro power plant was 25-74 kW. The cost of electricity from micro hydro power plant was Rp 1.015/kWh. This price was higher than that price of electricity supplied by National Electricity Company with subsidy scheme of 450 Watt, i.e Rp. 415/kWh. The price of electricity that paid by the community was Rp. 239/kWh. If it was assumed that initial cost for installation of micro hydro power plant was under scheme of grant through CSR (Corporate Social Responsibility) of Natioanal Electriocity Company (PT PLN), it was resulted the (nett present value) NPV was Rp. 16.578.189,- at year of 20, payback period at year between 15 to 16. Net B/C was 1,1 and Gross B/C was 1,07 with IRR at 11 percent. BEP of electricity produced by micro hydro power plant was 162.744 kW/year. Utilization of the idle electricity produced by micro hydro power plant at Kampung Lebakpicung during day time could be considered by installing the small scale coffee processing unit.
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