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25  Articles
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We consider a positional numeration system with a negative base, as introduced by Ito and Sadahiro. In particular, we focus on the algebraic properties of negative bases -ß for which the corresponding dynamical system is sofic, which happens, according to... see more

Let ß > 1 be a cubic Pisot unit. We study forms of Thurston tilings arising from the classical ß-numeration system and from the (-ß)-numeration system for both the Ito-Sadahiro and balanced definition of the (-ß)-transformation.



Air merupakan merupakan kebutuhan yang sangat vital bagi kehidupan. Jika kebutuhanakan air belum terpenuhi baik secara kuantitas maupun kualitas, maka akan menimbulkan dampak yang besar terhadapkerawanan kesehatan maupun sosial. Kualitas air meliputi pers... see more

Dalam penggunaannya, air mempunyai persyaratan tertentu, baik untuk air rumah tangga maupun air industri. Salah satu syarat yang harus dipenuhi adalah angka kesadahan air, yaitu angka yang berhubungan dengan jumlah kandungan calsium dan magnesium. Kedua u... see more

Sabun transparan minyak Ylang-ylang telah diformulasi dengan tiga konsentrasi yaitu 3,1%, 3,85% dan 4,58% dengan menggunakan VCO, minyak zaitun dan asam stearate sebagai bahan dasar pembentuk sabun yang direaksikan dengan NaOH sebagai basa alkali. Masing-... see more

This essay investigates the reasons behind the proliferation of haul celebrations in Indonesia. The study focuses on the construction of haul as a ritual forging collective memory among a particular group of people in the Muslim community. The writer adop... see more

This report describes a new therapeutic approach for severe ischemic heart disease, intramyocardial transplantation of autologous bone marrow-derived CD34+ cells combined with off-pump coronary artery bypass grafting (CABG). CD34 is widely known as a cell... see more

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