Judul: Rekonstruksi Pekerjaan Pembesian pada Proyek Pembangunan Gedung Perkantoran Chase Tower di Jakarta Selatan Menggunakan Software Tekla Structures V17
Abstrak: Indonesia merupakan salah satu negara berkembang dengan peningkatan pembangunan pada segala sektor, terutama sektor konstruksi. Software Tekla Structures v17 merupakan sebuah terobosan baru perangkat lunak desain grafis untuk rancang bangun suatu bangunan pada dunia konstruksi. Tekla Structures berbasis Building Information Modelling (BIM) dengan model 3D yang mampu memodelkan, menganalisis, dan memanajemen suatu proyek. Konsep BIM mampu menampilkan model secara 3D, 4D (penjadwalan), dan 5D (estimasi biaya). Bentuk konstruksi Chase Tower dimodelkan secara 3D melalui program Tekla Structures v17. Model struktur mencakup struktur bangunan gedung dan rancangan pembesian (tulangan) secara keseluruhan. Model 3D pembesian Chase Tower menggunakan Component Catalog pada menu Detailing. Model pembesian/penulangan 3D meliputi bored pile, pile cap, kolom, balok, lantai, dan shear wall. Pelaksanaan membuat model sistem tulangan memerlukan modifikasi agar sesuai dengan spesifikasi teknis perencanaan. Kelebihan software ini adalah mempercepat pekerjaan perencanaan, pelaksanaan, manajemen, serta evaluasi komponen struktur cepat dan koordinasi user lebih baik. Kekurangan Tekla Structures v17 adalah minimnya ketersediaan untuk diameter 13 mm, 19 mm, dan 29 mm pada katalog diameter batang tulangan.
Keyword: Building Information Modelling, Chase Tower, Model 3D, Penulangan, Tekla Structures.

Judul: Aplikasi Building Information Modeling (BIM) Menggunakan Software Tekla Structures 17 Pada Konstruksi Gedung Kuliah Tiga Lantai Fahutan IPB, Bogor
Abstrak: Building Information Modeling is the process of managing building data during the construction cycle. In this research Building Information Modeling (BIM) by using Tekla Structures software version 17 was applied on a three floors building of Fahutan IPB. This software has many good advantages in order to be considered as the best one solution in solving civil engineering problems. This research objective was to apply one BIM software to model the three floors building of Fahutan IPB in 3D and 4D, and to present the integrated information aspects of that building by using Tekla Structures software. In modeling the building, it required the as built drawing and schedule which was obtained from the Directorate of Facilities and Property of IPB. The building modeling process in this study was first started by drawing the structure such as foundations, columns, beams, slabs, reinforcement and followed by the implementation of schedule for each job structure. The result was four dimensions (4D) modeling that was poured in 3D modeling with contained scheduling features in one file of Tekla Structures. This research produced information that represented in Tekla Structures software such as building dimensions, volume of material, and output of project implementation schedule.
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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