Al-SiC is a composite composed of AA6061 as a matrix and SiC as a reinforcement particle. The variation of mass added will affect the mechanical properties of the composite because Al-SiC is hardenable, which means that its mechanical properties can be improved by adding the reinforcement component. However, an excessive portion of SiC leads to a decrease in mechanical properties. The purpose of this study was to find the optimal composition of the addition of SiC into the aluminium matrix to gain maximum tensile strength and hardness. The mass fraction variation that would be used in this composite was the addition of 6%, 8%, and 10% SiC with the addition of 1% Mg as a wetting agent. The mixing process used the stir casting method. The process of adding SiC and Mg was carried out by melting the aluminium while stirring it for a certain time before it went to the furnace. The ASTM E8/E8M standard was used for observing the tensile strength of the specimens. Machining was carried out before testing. The specimens were also tested for hardness using the Rockwell hardness method. The result shows that the addition of SiC at the amount of 6%, 8%, and 10% SiC increased the ultimate tensile strength by154.10 MPa, 175.01 MPa, and 198.14 MPa, respectively. Similarly, the hardness also increased up to 30.1 HRF, 48.1 HRF, and 66 HRF, respectively. Microstructure observation also confirmed that a 10% SiC fraction results in less defect and good wettability. The addition of 10% SiC and 1% Mg resulted in maximum tensile strength and hardness and the best microstructure.

Asesmen Terpadu merupakan strategi untuk mengefektifkan penegakan tindak pidana narkotika dengan menekan angka permintaan melalui upaya rehabilitasi bagi pecandu dan penyalahguna narkotika. Tulisan ini bertujuan untuk mengkaji mekanisme Asesmen Terpadu dalam tindak pidana narkotika di Indonesia. Juga bermaksud menggali apakah Asesmen Terpadu sebagai paradigma baru mampu menekan angka permintaan narkotika (demand reduction) atau tidak. Permasalahan yang dikaji dalam penelitian ini Pertama, bagaimana mekanisme Asesmen Terpadu dalam tindak pidana narkotika di Indonesia? Kedua, apakah Asesmen Terpadu mampu mengurangi permintaan (demand reduction) dalam penanggulangan kejahatan narkotika lintas negara? Metode penelitian yang digunakan pada penelitian ini adalah yuridis normatif, dengan pendekatan perundang-undangan (statute approach), pendekatan konseptual (conceptual approach), dan pendekatan sejarah (historycal approach). Data bersumber pada bahan hukum primer dan bahan hukum sekunder yang diperoleh dianalisis dengan menggunakan analisis kualitatif. Hasil penelitian menunjukkan bahwa Asesmen Terpadu merupakan mekanisme yang dibentuk berdasarkan peraturan bersama guna menempatkan pecandu dan penyalahguna narkotika ke dalam lembaga rehabilitasi medis/sosial. Asesmen Terpadu memberikan kesempatan besar kepada pecandu dan penyalahguna narkotika untuk direhabilitasi. Rehabilitasi merupakan salah satu cara guna menekan angka permintaan narkotika (demand reduction) yang akan berimplikasi pada penurunan angka peredaran gelap narkotika di Indonesia.

Composites using bio-materials with unique properties, such as spent coffee ground were developed for composite fillers. This study was conducted to produce samples under various mixing speed conditions. This study also determined effect of mixing speeds on particle homogeneity as well as composite dispersion in the final product. The composite dispersion was determined by an index based on a standard deviation of free-path spacing of filler particles using a digital microscope. Results showed that when using high-speed mixing, particle tends to agglomerate with particle clumps. We also obtained that faster mixing speed results more homogeneous mixture compared to slower speed. In short, slower speed can reach similar result in homogeneity levels, but it would require longer time for the mixing process.

Egg marketing is the final process of a business activity for breeding chicken eggs where farmers or producers convey the results of their production to consumers with the help of marketing institutions. The intense competition in the field of egg marketing is characterized by many egg agents that offer a variety of cooperation with various advantages. The level of satisfaction of farmers will determine the sustainability of business cooperation with egg agents. The purpose of this study is (1) knowing how the influence of pricing by egg agents UD. Enggal Jaya on the satisfaction of chicken farmers layer, (2) know how the influence of service quality by egg agents UD. Enggal Jaya on the satisfaction of layer chicken farmers and (3) know how the effect of determining the price and quality of service by egg agents UD. Enggal Jaya for the satisfaction of chicken farmers. The data analysis method used is multiple linear regression analysis. The conclusion of this study is that pricing has no positive and insignificant effect while service quality has a positive and significant effect on the satisfaction of layer chicken farmers, pricing and services simultaneously affect the satisfaction of layer chicken farmers.