Pengembangan Bahan Ajar E-Book Interaktif Berbantuan 3D Pageflip Profesional Pada Materi Aritmetika Sosial

Penelitian ini merupakan penelitian pengembangan yang mengadaptasi model pengembangan ADDIE. Ada 5 tahapan utama dalam penelitian ini terdiri dari tahap, analisis (analysis), desain (design), pengembangan (development), penerapan (implementation), dan evaluasi (evaluation). Instrumen penelitian yang digunakan adalah lembar observasi, wawancara dan angket. Produk hasil pengembangan divalidasi oleh tim ahli media dan materi selanjutnya dinilain oleh guru mata pelajaran matematika dan kemudian diujicobakan pada kelompok kecil pada siswa kelas VII. Hasil dari penelitian ini adalah sebuah bahan ajar e-book interaktif yang operasikan menggunakan software 3D PageFlip Profesional. Produk tersebut divalidasi oleh ahli media dan ahli materi. Hasil validasi ahli media diperoleh skor dengan rata-rata 0,86 dan ahli materi diperoleh skor dengan rata-rata 0,802 dikategorikan valid. Selanjutnya, untuk tanggapan guru diperoleh skor persentase 83,33% (sangat baik) sehingga bahan ajar e-book interaktif yang dikembangkan layak untuk diujicobakan. Hasil respon siswa kelas VII diperoleh persentase 85,18% (sangat baik). Berdasarkan proses pengembangan mulai dari validasi media maupun materi dan hasil penelitian, secara keseluruhan disimpulkan bahwa bahan ajar e-book ini sangat baik digunakan sebagai bahan ajar atau media yang dapat digunakan secara interaktif dalam pembelajaran matematik

The Effect of Personal Protective Equipment Uptake on the Risk of Leprosy in Adults: Meta Analysis

Background: Leptospirosis is an acute infec­tious disease that can attack humans and ani­mals caused by the Leptospira bacteria. Lepto­spirosis contributes to morbidity and mortality in the high-risk group, namely adults. Compli­ance with the use of personal protective equip­ment and direct contact with animal tissue infected with Leptospira sp. bacteria increase the risk of leptospirosis. This study aims to ana­lyze the magnitude of the effect of using per­sonal protective equipment on the risk of leptospirosis with a meta-analysis. Subjects and Method: This was a systematic review and meta-analysis carried out by follow­ing the PRISMA flow diagram. The process of searching for articles is through a journal data­base which includes: PubMed, Springer Link, Google Scholar and Science Direct by selecting articles published in 1999-2020. Keywords used "Leptospirosis AND Personal Protective Equipment", "leptospirosis" AND "risk factors", "leptospirosis AND adjusted odds ratio", "lepto­spirosis" AND "adults", "leptospirosis AND risk factors AND adjusted odds ratio". The inclu­sion criteria were full paper articles with observa­tio­nal study design, articles in English and Indo­nesian, multivariate analysis used with adjusted odds ratio. Articles that meet the requirements are analyzed using the Revmen 5.3 application. Results: A total of 8 articles were reviewed in this study with a cross-sectional and case-control study design. Meta-analysis of 4 case-control studies showed that non-adherence to the use of personal protective equipment had a 2.77 times increased risk of leptospirosis compared with using personal protective equipment (aOR= 2.77, 95% CI= 1.76 to 4.36, p <0.001). A meta-analysis of 4 cross-sectional studies concluded that non-adherence to the use of personal protective equip­ment had a 2.73 times increased risk of lepto­spirosis compared with using personal protective equipment (aOR= 2.73, 95% CI= 1.99 to 3.74; p= <0.001). Conclusion: Non-compliance with the use of personal protective equipment increases the risk of leptospirosis. Keywords: leptospirosis, personal protective equipment, meta-analysis Correspondence: Rizki Kurniawan Saputra. Masters Program in Public Health, Universitas Sebelas Maret. Jl.Ir. Sutami 36A, Surakarta 57126, Central Java. Email: [email protected]. Mobile: 087738152955. Journal of Health Promotion and Behavior (2021), 06(01): 21-3 https://doi.org/10.26911/thejhpb.2021.06.01.03

Pemurnian Batuan Emas Ramah Lingkungan Menggunakan Teknik Sink and Flotation dengan Media Tribromometana

Separation of gold from its ore by sink and float method with tribromomethane as a medium is considered economical and environmentally friendly due to the absence of Mercury used in the process. The sink and float technique is based on the specific gravity difference among each constituents. The ore was initially cleaned, washed, crushed and then sieved to obtain various powder sizes, equivalent to 20, 50, and 80 mesh size. The characterization was performed by means of XRD and XRF analysis to determine the initial gold content. Afterward, the ore were processed by using 300 ml tribromomethane, so that two phases, namely the sinking and floating phase, will be formed. Each phase was then undergone weighing, drying and purifying or destructuring by using aqua regia. The results show that the optimum yield of 5.87403% with a gold content (Au) of 0.25976%, was obtained in the sinking phase for 80 mesh size with 3 M tribromomethane concentration and in the floating phase having 0.000001756% with gold content of 0.0000001568%