No abstract

Aluminum oxide in peat clay has the potential to be used as a catalyst, coagulant, and adsorbent for the water treatment process. The usefulness of aluminum oxide in peat clay is enhanced by the leaching process. Aluminum was leached from peat clay in a variety of microwave power, HCl concentrations, and particle size. The effect of the microwave leaching parameters on the aluminum leaching rate was observed. The shrinking core (SC) model used in microwave-assisted leaching was assumed a pseudo steady state with chemical reactions. Effective diffusivity (De), mass transfer coefficient (kc), and reaction rate constants (k) are used as fitting parameters. The best fitting parameters De, kc , and k obtained 0.0049 cm2/s, 2.49 cm/s, and 10.5 cm/s, respectively. The comparison of experimental data and model calculations shown that the SC model can describe experimental data well for all microwave-assisted leaching conditions. Precious information on the results of this research can be given for the goal of the scaling-up and design of the microwave assisted leaching process.

The family has an essential role in education, both in the community since the family is the first place where a child grows up and gets influenced by its members at a critical time in a child's education. Family is the first environment for children. The child's development in the family is determined by the situation, the family conditions, and the parents` experiences because in the family there is a natural mutual interaction based on responsibility so that a whole and solid unity will appear. Cultivating religious values such as faith, worship, honesty, and other noble principles; and Providing supervision actions for children's behavior.

Peneletian yang dilakukan adalah penelitian analisis dokumen (Documentary Analysis). Dokumen yang di maksud adalah buku guru dan buku siswa tema perkembangan teknologi.Penelitian ini bertujuan untuk mengetahui dan mendeskripsikan keintegrasian pada materi pembelajaran, rancangan langkah-langkah kegiatan pembelajaran, rancangan penilaian, rancangan media dan sumber belajar Sekolah Dasar Kelas III tema Perkembangan Teknologi Penelitian ini menggunakan deskriptif kualitatif. Teknik pengumpulan data yang digunakan adalah metode dokumentasi. Analisis data yang digunakan yaitu pengumpulan data, reduksi data, penyajian data, dan penarikan kesimpulan. Berdasarkan analisis data, diperoleh hasil penelitian bahwa: 1) Terdapat keintegrasian pada materi pembelajaran dengan tingkat keintegrasian 98,7% kategori sangat baik dengan klasifikasi multidisipliner. 2) Terdapat keintegrasian pada rancangan langkah-langkah kegiatan pembelajaran dengan tingkat keintegrasian 79,3% kategori sedang dengan klasifikasi intradisipliner. 3) Terdapat keintegrasian pada rancangan penilaian dengan tingkat keintegrasian 71% kategori sedang dengan klasifikasi intradisipliner. 4) Terdapat keintegrasian pada rancangan media dan sumber belajar dengan tingkat keintegrasian 91% kategori sangat baik dengan klasifikasi intradisipliner.