A test of diamond's method for estimating size distribution of aromatic ring systems
Abstract Diamond 's method of estimating the size distribution of aromatic planes in a non-crystalline medium has been applied to a number of liquid hydrocarbon specimens and the results shown to suffer from both inaccuracy and inconsistency. It would appear that similar results for coals may be quite misleading, while those from cokes and similar materials should be treated with caution.
The present study aimed to analysis the aftermath of science learning based on an integrated scientific approach to local potential, onion agriculture, towards the science process skill of 7th grade of junior high school students. The study was a quasi-experimental research with non-equivalent control group design. The object of this experiment was all classes in the 7th grade of Wedarijaksa 2 junior high school. Cluster random sampling was used to gather the sample, as the result, two over seven classes were randomly chosen. Data that be used in the research were the result of science process skill test. Data were analyzed using One-way Anova. The result shows that there is a significant impact of science learning based on scientific approach to local potential, in this case is onion agriculture, towards process science skill of the students.