Judul: Review of Drainage System of Sarinah
Mass Rapid Transit Track in Central Jakarta
Abstrak: Sistem drainase dari MRT diperlukan untuk menanggulangi situasi emergency saat banjir tidak dapat terbendung lagi oleh bangunan outlet, dimana air akan dialirkan ke kolam kolektor di bawah tanah untuk ditampung sementara. Penelitian ini bertujuan menelaah desain eksisting sistem drainase stasiun yang mencakup analisis curah hujan rencana dan intensitas hujan, debit limpasan, debit rencana, dimensi kolam kolektor, serta analisis debit dan total dynamic head pompa. Hasil analisis menunjukkan debit limpasan sebesar 4,8 m3/det pada DTA 1 dan 3,5 m3/det pada DTA 2. Sebagai perbandingan, dalam penilitian ini telah dirancang kolam kolektor berbentuk bujur sangkar dengan sisi 6 m dan kedalaman 8 m untuk kolam kolektor I, serta dengan sisi 7 m dan kedalaman 8 m untuk kolam kolektor II. Diperlukan 7 pompa yang dapat mengalirkan debit sebesar 0,36 m3/det dengan total dynamic head sebesar 18,93 untuk kolam kolektor I, dan 10 pompa yang dapat mengalirkan debit 0,52 m3/det dengan total dynamic head 18,62 m untuk kolam kolektor II dengan tipe standar 125 × 100 Y4 -5 15. Direkomendasikan untuk menggunakan hasil analisis debit limpasan dalam skripsi ini sebagai debit rencana dalam kaji ulang bangunan outlet menuju riol kota Sungai Cideng., Drainage system of MRT is needed to overcome emergency when flood is no longer contained by outlet structure, where water will be flown towards underground sump pit for it to contain the water temporarily. The study aimed to dissect the existing design of station drainage systems that includes analysis of planned rainfall and rainfall intensity, runoff, design discharge, sump pit dimensions, and analysis of discharge and total dynamic head of pump. The result of analysis showed runoff of 4,8 m3/sec in catchment area 1 and 3,5 m3/sec in catchment area 2. As a comparison, the sump pits that had beed designed in this research had a shape of a square with sides of 6 m and 8 m depth for sump pit I and sides of 7 m and 8 m depth for sump pit II. Seven pumps with discharge of 0,36 m3/sec and a total dynamic head of 18,93 m were needed for sump pit I and 10 pumps with a discharge of 0,52 m3/sec and total dynamic head of 18,62 m for sump pit II, with 125 × 100 Y4 -5 15 standard type. It was recommended to use the result of runoff analysis in this research as design discharge in reviewing the outlet structure that was connected to Cideng River city sewer.
Keyword: design discharge, pump, rainfall, runoff, sump pit

Judul: Review of Urban Drainage System in Sidanegara Village Central Cilacap Subdistrict Cilacap District
Abstrak: Beberapa wilayah perkotaan di Kabupaten Cilacap memiliki sistem drainase terbangun yang tidak memadai sehingga sering terjadi banjir. Penelitian ini bertujuan mengkaji ulang sistem drainase perkotaan. Hasil analisis debit rencana saluran lateral berkisar 0,21 – 0,87 m3 /detik, debit rencana saluran kolektor 2,61 – 4,13 m3 /detik dan debit rencana saluran utama sebesar 6,28 m3 /detik. Hasil analisis dimensi saluran lateral yaitu lebar 0,45 – 0,80 m dan kedalaman 0,58 – 0,90 m, dimensi saluran kolektor lebar 1,6 – 2,0 m dan kedalaman 1,0 – 1,4 m serta dimensi saluran utama lebar 3,0 m dan kedalaman 1,2 m. Beberapa saluran lateral terbangun kapasitasnya kurang memadai, sebagian besar kapasitas saluran kolektor tidak memadai dan kapasitas saluran utama sudah memadai. Perlu dilakukan pembersihan sedimen dan peningkatan saluran guna menanggulangi terjadinya genangan. Selain itu, perlu dilakukan perbaikan dimensi inlet pada saluran kolektor ruas 4. Estimasi total biaya rehabilitasi saluran sebesar Rp1.621.863.000. Tindakan konstruksi saluran sebaiknya menggunakan material pasangan batu dengan mortar agar biaya lebih ekonomis., Several urban areas in Cilacap District have an inadequate built-up drainage system which results in frequent flooding. This study aims to review the urban drainage system. The results of the analysis of the lateral channel design discharge range from 0.21 – 0.87 m3 /second, the collector channel design discharge is 2.91 – 3.38 m3 /second and the main channel design discharge is 6.28 m3 /second. The results of the analysis of lateral canal dimensions are 0.45 – 0.80 m wide and 0.58 – 0.90 m deep, collector canal dimensions 1.6 – 2.0 m wide and 1.0 – 1.4 m deep and main canal dimensions 3.0 m wide and 1.2 m deep. Some of the lateral channels have inadequate capacity, most of the collector channels are inadequate and the main channel capacity is sufficient. It is necessary to clean the sediment and improve the channels to prevent inundation. In addition, it is necessary to improve the dimensions of the inlet at collector section 4. The estimated total cost of canal rehabilitation is Rp. 1,621,863,000. Channel construction measures should use masonry material with mortar so that costs are more economical.
Keyword: collector channels, discharge runoff, drainage, review

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