Judul: Analisis Erection Box Girder Menggunakan Launching Gantry pada Proyek Enam Ruas Tol Dalam Kota Jakarta
Abstrak: Pekerjaan konstruksi pada umumnya dilihat dari segi mutu, biaya dan waktu. Penelitian ini bertujuan menganalisis metode kerja, biaya dan waktu yang dibutuhkan untuk pekerjaan erection box girder menggunakan launching gantry serta membandingkannya dengan traveller. Analisis dilakukan berdasarkan pengamatan, wawancara dan data sekunder. Berdasarkan hasil penelitian, metode kerja launching gantry mencakup pembuatan precast box girder, pemasangan elemen gantry dan pemasangan box girder. Tahapan pekerjaan pemasangan box girder dengan launching gantry diantaranya adalah hanging, glueing, stressing, grouting, dismaintling spreader dan launching ke span berikutnya. Biaya seluruhnya yang dikeluarkan untuk pekerjaan metode launching gantry sebesar Rp. 36,749,953,230 dan waktu yang diperlukan adalah 103 hari. Hasil penelitian menunjukkan bahwa launching gantry menggunakan metode konstruksi span by span sedangkan traveller menggunakan balanced cantilever. Biaya untuk metode launching gantry lebih mahal dibandingkan dengan metode traveller sedangkan waktu yang dibutuhkan lebih cepat dibandingkan dengan metode traveller.
Keyword: balanced cantilever, cost, span by span, traveller method

Judul: Analisis Kekuatan Struktur Steel Box Girder Jalan Bebas Hambatan Tanjung Priok Seksi E-2A Terhadap Gempa
Abstrak: Tanjung Priok, Jakarta is one of the centers of economic activity in Indonesia, it is supported by the Jakarta International Container Terminal (JITC) and several large plants around it like PT. Pertamina and PT. Bogasari. Ground transportation is a type of transportation that is widely used by businesses to distribute the products it sells, or stored in the warehouse or to be exported out of the country by sea. Economic development of Tanjung Priok so rapidly causing traffic volume in Tanjung Priok is inadequate so the congestion. Congestion happens memperhambat economic activity in Tanjung Priok. Roads and bridges is one of the major factors in the field of transport infrastructure proponent, so do road and bridge infrastructure to keep pace with the development of economic activities in Tanjung Priok. This study aims to determine the structural strength of steel box with modeling grider CSI Bridge. Based on a study of the steel box girder Highway Tanjung Priok safe due to a combination of forces and especially the earthquake.
Keyword: 3D modeling, steel box girder analysis, Highway Tanjung Priok

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