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: Reviewing the Drainage System of Lubuk  Sikaping City
Abstrak: Sistem drainase perkotaan terbangun yang tidak memadai menyebabkan terjadinya genangan pada beberapa wilayah. Penelitian ini bertujuan untuk mengkaji ulang sistem drainase perkotaan. Hasil analisis debit rencana untuk saluran lateral antara 0,07 – 1,46 m3/detik, debit rencana untuk saluran kolektor antara 1,87 – 2,92 m3/detik dan debit rencana pada saluran utama sebesar 5,07 m3/detik. Hasil analisis dimensi pada saluran lateral yaitu untuk lebar dasar saluran 0,26 – 1,21 m dengan kedalaman 0,46 – 1,41 m, adapaun dimensi saluran kolektor lebar saluran 1,4 – 1,6 m dan kedalaman 1,6 – 1,8 m, dimensi saluran utama dengan lebar dasar saluran 2,25 m dan kedalaman saluran 2,55 m. Beberapa (sebagian) saluran lateral terbangun memiliki kapasitas yang kurang memadai dan tidak memadai, kapasitas saluran kolektor dan saluran utama seluruhnya tidak memadai. Tingginya sedimen dan inlet yang rusak menjadi penyebab utama terjadinya banjir dan genangan. Meskipun saluran terbangun telah berfungsi dengan baik (tidak rusak), namun tingginya sedimen pada saluran menyebabkan kapasitas saluran berkurang. Oleh karena itu, dibutuhkan peningkatan dimensi saluran lateral, saluran kolektor dan saluran utama yang tidak memadai. Selain itu, perlu juga dilakukan pembersihan sedimen pada saluran yang kurang memadai dan perbaikan inlet khususnya pada DTA 1., Inadequate built urban drainage system causes inundation in several areas. This study aims to review the urban drainage system. The results of the analysis of the design discharge for the lateral channel are between 0.07 – 1.46 m3/second, the design discharge for the collector channel is between 1.87 – 2.92 m3/second and the design discharge for the main channel is 5.07 m3/ second. The results of the dimension analysis on the lateral channel are for the channel bottom width 0.26 – 1.21 m with a depth of 0.46 – 1.41 m, while the dimensions of the collector channel are 1.4 – 1.6 m wide and 1.6 – 1.6 meters deep. 1.8 m, the dimensions of the main channel with a channel bottom width of 2.25 m and a channel depth of 2.55 m. Some (partly) built lateral canals have inadequate and inadequate capacity, the capacity of collector channels and main canals are entirely inadequate. The high sediment and damaged inlet are the main causes of flooding and inundation. Although the built canal has functioned well (not damaged), the high sediment in the channel causes the channel capacity to decrease. Therefore, it is necessary to increase the dimensions of the lateral channel, collector channel and main channel which is not adequate. In addition, it is also necessary to clean the sediment in inadequate channels and repair the inlet, especially in DTA 1.
Keyword: Debit, Drainase, Genangan, discharge, drainage, flood

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