Judul: Drainage System Planning in West Bogor Agrohills Bogor Regency West Java
Abstrak: Alih fungsi lahan dapat mengubah laju infiltrasi, dan hal ini akan berdampak pada berkurangnya daerah resapan dan meningkatnya limpasan. Penelitian ini bertujuan untuk merancang sistem drainase di Bogor Barat Agrohills. Perencanaan sistem jaringan drainase dilakukan berdasarkan peta topografi, analisis curah hujan maksimum dan debit limpasan, termasuk perencanaan dimensi saluran, dan gorong gorong. Bogor Barat Agrohills mempunyai pola aliran parallel grid system dan natural system. Saluran primer pada daerah tangkapan air (DTA) 1 sampai 4 masing-masing memiliki lebar dan kedalaman saluran berturut-turut sebesar: (0,7 x 0,9) m, (0,6 x 0,8) m, (0,5 x 0,7) m, dan (0,6 x 0,8) m. Saluran sekunder pada DTA1 sampai 4 masing-masing memiliki lebar dan kedalaman saluran berturut-turut sebesar: (0,4 x 0,6) m, (0,4 x 0,6) m, (0,4 x 0,6) m, dan (0,5 x 0,7) m. Berdasarkan hasil analisis kapasitas, saluran sudah sesuai terhadap volume limpasan. Tipe saluran gorong-gorong yang digunakan yaitu saluran beton bertulang persegi (box culvert). Direncanakan saluran gorong-gorong sebanyak 15 trase pada DTA 1, 2, dan 4. Gorong-gorong pada DTA 4 berukuran (0,7 x 0,7) m dan pada DTA 2 berukuran (0,5 x 0,5) m, sedangkan pada DTA 1 berukuran (0,6 x 0,6) m., Land conversion can change the rate of infiltration, and this will have an impact on reducing the catchment area (DTA) and increasing runoff. This study aimed to design the drainage system in Bogor Barat Agrohills. The drainage network system planning was conducted based on topographic maps, analysis of maximum rainfall and runoff discharge, including planning for channel dimensions and culverts. Bogor Barat Agrohills has a parallel grid system and natural system. The primary channels in DTA 1 to 4 have width and depth of (0,7 x 0,9) m, (0,6 x 0,8) m, (0,5 x 0,7) m, and (0,6 x 0,8) m respectively. The secondary channels in DTA1 to 4 have width and depth of (0,4 x 0,6) m, (0,4 x 0,6) m, (0,4 x 0,6) m, and (0,5 x 0,7) m respectively. Based on the analysis results of the channels capacity, the channel is suitable for the volume runoff. The type of culvert channel is a rectangular reinforced concrete channel (box culvert). The culverts were design with 15 lines in DTA 1, 2, and 4. The culverts in DTA 4 have a dimension of (0,7 x 0,7) m and in DTA 2 have a dimension of (0,5 x 0,5) m, while in DTA 1 have a dimension of (0,6 x 0,6) m.
Keyword: culvert, drainage channel, dta, runoff volume

Judul: Evaluation of Drainage Channels on Gardu Raya Road, Bogor City, West Java
Abstrak: Dalam pembangunan jalan raya, diperlukan prasarana berupa sistem drainase yang baik. Salah satu wilayah Kota Bogor yang mengalami masalah sistem saluran drainase adalah Jalan Gardu Raya. Permasalahan yang seringkali terjadi di wilayah ini adalah genangan air ketika curah hujan tinggi. Berdasarkan permasalahan yang telah disebutkan, penelitian ini bertujuan melakukan evaluasi kondisi saluran drainase di Jalan Gardu Raya, menentukan kapasitas saluran yang sesuai dengan limpasan yang terjadi serta menghasilkan desain saluran yang sesuai dengan kondisi lokasi penelitian. Evaluasi saluran drainase dilakukan menggunakan Software EPA SWMM 5.2. Perhitungan dilakukan dengan metode Log Pearson III dengan nilai curah hujan rencana sebesar 135,11 mm dengan periode ulang 2 tahun. Melalui pemodelan menggunakan EPA SWMM 5.2 didapatkan bahwa lokasi peneltian memiliki 34 subcatchment, 45 conduit, 45 junction dan 2 outfall. Berdasarkan hasil simulasi didapatkan bahwa terdapat saluran yang perlu diperbaiki dengan mengubah dimensi lebar saluran menjadi 0,60 m dan kedalaman 0,80 m. Serta perlu dilakukan galian tanah untuk mengatasi perbedaan elevasi pada saluran dari 188,4 mdpl menjadi 187,4 mdpl., In the construction of highway, infrastructure is needed in the form of a good drainage system. One of the areas in Bogor City that is experiencing problems with the drainage system is Gardu Raya Road. A problem that often occurs in this area is waterlogging when rainfall is high. Based on the problems mentioned, this research aims to evaluate the condition of the drainage channels on Gardu Raya Road, determine the channel capacity according to the runoff that occurs and produce a channel design that suits the conditions of the research location. Drainage channel evaluation was carried out using EPA SWMM 5.2 Software. Calculations were carried out using the Log Pearson III method with a planned rainfall value of 135,11 mm with a return period of 2 years. The simulation results show that the research location has 34 subcatchments, 45 conduits, 45 junctions and 2 outfalls. Based on the simulation results, it was found that there were channels that needed to be repaired by changing the dimensions of the channel width to 0,60 m and depth to 0,80 m. And it is necessary to excavate the land to overcome the elevation difference in the channel from 188,4 masl to 187,4 masl.
Keyword: curah hujan, drainase, epa swmm

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