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7.574  Articles
1 of 758 pages  |  10  records  |  more records»
This study aims to develop primary-school students’ understanding of the scientific practices in the Benzene Ring Heuristic (BRH) and to determine how BRH applications would affect student perceptions about science, scientific knowledge, and scientists. A... see more

A new six-armed compounds consist of benzene ring as a central core substituted with aromatic ring and three rod-like armed of 2-chloro-4,6-bis(dodecyloxy)-1,3,5-triazine as the peripheral arms unit which obtained by sequential nucleophilic substitution o... see more

The C18 macro-aromatic carbo-benzene core is a strong chromophoric unit resembling the porphine ring which is prone to quench the emission of fluorophoric substituents. Within the aim of preparing fluorescent carbo-benzenes (and carbo-cyclohexad... see more

We study a new routing problem arising in City Logistics. Given a ring connecting a set of urban distribution centers (UDCs) in the outskirts of a city, the problem consists in delivering goods from virtual gates located outside the city to the customers ... see more

The compound was prepared by dissolving 2-(phenylamino)pyridine (0.52 g ; 3.0 mmol) and di(methanesulfonyl)amine (0.51 g; 3.0 mmol) in 5 mL methanol. Slow partial evaporation of the solvent at low tempertaure (-30 oC) gave a yield of 0.66 g (64%) and crys... see more

Methacrylic azomonomers based on para-aminoacetanilide were synthesized. Azofragments include various aromatic rings: benzene, naphthalene, 8-oxyquinoline and thiazole derivatives. We studied the kinetics of their polymerization. It was shown that the pol... see more

Thymol is a phenolic monoterpene with colorless crystalline shapes or white crystalline powder with a spicy, caucasian and sweet taste. Its chemical structure is characterized by a hydroxyl group (-OH) attached to a benzene ring. It provides for the hydro... see more

Tulisan ini merupakan sebuah kajian sejarah atas tradisi menulis orang betawi yang seringkali dianggap tidak ada, karena kebudayaan orang betawi seringkali diidentikkan dengan kebudayaan bertutur. Kajian ini menekankan kepada aspek sejarah kebudayaan atau... see more

 Seringnya dilakukan kegiatan produksi mengecilkan ukuran butiran dengan menggunakan alat ballmill yang dilakukan di laboratorium Fisika Material melandasi pemikiran untuk dilakukannya penelitian ini. Sampel Zeolit yang menjadi salah satu material ya... see more

1 of 758 pages  |  10  records  |  more records»