Judul: Analisis Rembesan dan Gaya Angkat Pada Perencanaan Bendung di Desa Sungai Buntu, Kecamatan Pedes, Karawang.
Abstrak: The construction of a dam is built crossing river stream for elevating water level. In designing a dam, force field analysis in a dam is needed to ensure a dam can be operated properly. The focus of this research is to analize seepage and uplift pressure in a dam. The objective of this research is quantifying and analyzing the force that occurs in a dam as a reference in designing of a dam construction. The study is located in Sungai Buntu Village, Pedes, Karawang. The analysis is using guideline KP-02 Criteria for Designing Main Dam and KP-06 Criteria for Designing Additioal Structures. Software Geo Studio Seep/w 2004 is used in seepage analysis. The data which are required are soil permeability, and water level at upstream and downstream. The equipments used in this study are soil ring, tape, computer, and calculator. Based on the result of Geo Studio Seep/w 2004 analysis, the quantity of seepage under the Dam is 1,01 x10-8 m3/sec. Based on flow net analysis the quantity of seepage under the Dam is 1,72x10-8 m3/sec and the uplift pressure is 2450 kg/m.
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Judul: Analisis Stabilitas Bendung dan Rembesan pada Perencanaan Bangunan Bendung di Desa Sungai Buntu Karawang
Abstrak: Water resources management, especially around the coast in agriculture today is needed to support empowerment in agriculture. The purpose of this study is to analyze the slope stability and seepage weir urugan as design of the weir and in Tegal River, River Buntu Village, Pedes subdistrict, Karawang . The results showed that the weir estimates are appropriate and can be built is a concrete weir with a weir height and weir urugan 1,7 m, 0,95 m high water upstream and downstream water levels 0,75 m . Shear force values and bolster the stability of the concrete weir obtained are still below the safety factor , the slice force and shear force while receiving and not receiving the load of each load is still allowed. The planned dam has a value of soil cohesion 1,8 kN/m3 and angle in the style of 34 . Safety factor for slope stability at 1,815 and seepage discharge that occurs in the soil is equal to 1,7408 x10-4 liter/second.
Keyword: seepage at urugan weir., urugan slope stability, weir concrete stability

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