This study aims to examine the effect of recycled Polyethylene Terephthalate (PET) artificial aggregate as a substitute for coarse aggregate on the compressive strength and flexural strength, and the volume weight of the concrete. PET plastic waste is recycled by heating to a boiling point of approximately 300°C. There are five variations of concrete mixtures, defined the percentage of PET artificial aggregate to the total coarse aggregate, by 0, 25, 50, 75 and 100%. Tests carried out on fresh concrete mixtures are slump, bleeding, and segregation tests. Compressive and flexural strength tests proceeded based on ASTM 39/C39M-99 and ASTM C293-79 standards at the age of 28 days. The results showed that the use of PET artificial aggregate could improve the workability of the concrete mixture. The effect of PET artificial aggregate as a substitute for coarse aggregate on the compressive and flexural strength of concrete is considered very significant. The higher the percentage of PET plastic artificial aggregate, the lower the compressive and flexural strength, and the volume weight, of the concrete. Substitution of 25, 50, 75 and 100% of PET artificial aggregate gave decreases in compressive strength of 30.06, 32.39, 41.73 and 44.06% of the compressive strength of the standard concrete (18.20 MPa), respectively. The reductions in flexural strength were by respectively 19.03, 54.50, 53.95 and 61.00% of the standard concrete's flexural strength (3.59 MPa). The reductions in volume weight of concrete were by respectively 8.45, 17.71, 25.07 and 34.60% of the weight of the standard concrete volume of 2335.4 kg/m3 Doi: 10.28991/cej-2020-03091626 Full Text: PDF

This study is entitled Leadership of Selected Village Heads in Carrying Out Government Duties (Analysis Study of Sidoharjo Village Head, Susukan District). The focus of this research is about how the Village Chief Leadership Style in Sidoharjo Village Head, Susukan District and the purpose of this study is to find out the Village Head Leadership Style in Sidoharjo Village Head, Susukan District. This study is classified as a descriptive study with core questionnaire instruments and data analysis techniques using the presentation of the frequency table of the results of questionnaires from respondents who have been determined based on questions about the 4 leadership styles based on expert theory used as grand theory in this study. The results showed that the leadership style that tends to be applied by village heads in carrying out their daily tasks and functions is the leadership style of Democracy. Democratic leadership style can be seen from the involvement or active participation of Sidoharjo village head in deciding problems in every activity of the organization / office. In addition, the Village Head also prioritizes democracy in his administration by always holding deliberations to reach consensus in making every decision.

Pandemi Covid 19 menyebabkan masyarakat indonesia terganggu pada sistem kesehatannya, yang dapat membuat derajat kesehatan mengalami penurunan yang sangat signifikan, sehingga perlu dilakukan 5 M (Memakai masker, mencuci tangan, menjaga jarak, menjauhi kerumunan dan mengurangi mobilitas). Selain 5 M masyarakat dapat mencegah dengan cara meningkatkan imunitas tubuh dengan menggunakan suplemen vitamin dan obat tradisional (jamu). Penggunaan obat tradisional merupakan warisan nenek moyang indonesia yang diperoleh secara empiris. jamu merupakan minuman kesehatan yang dapat dimanfaatkan khasiat dan keamanannya dalam meningkatkan imunitas disaat pandemi covid 19. Tanaman obat yang jumlahnya sangat banyak dan dapat dimanfaatkan dilingkungan rumah terurutama di tingkat desa, tetapi masyarakat belum mengetahui menfaat dan cara pengolahan tanaman tersebut dalam meningkatkan imunitas. Metode yang digunakan berupa penyuluhan kepada masyarakat dan aparat desa, sehingga dapat digunakan dan disebarluaskan ke seluruh masyarakat desa dalam membuat racikan jamu dalam meningkatkan imunitas masyarakat di Desa Sidoharjo. Penyuluhan ini meliputi cara membuat jamu dari tanaman sambiloto, jahe merah, meniran dan temulawak dan lain-lain yang banyak tumbuh di Desa Sidoharjo

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