Determination of Aluminium and Sulfur in Ferromolybdenum

In determining aluminium and sulfur in ferromolybdenum, iron and molybdenum were removed by methyl isobutyl ketone extraction method. After the removal of iron and molybdenum, aluminium was determined gravimetrically or volumetrically by using oxine, by which 0.1-1 per cent aluminium in ferromolybdenum could be determined. By using methyl isobutyl ketone for ether, the danger of explosion caused by organic vapour and the interference of molybdenum could be avoided. Sulfur was determined gravimetrically as barium sulfate down to 0.005 per cent content of it. The present procedure is superior in its simplicity and in being free of the obstruction by molybdenum trioxide to the usual combustion method for sulfur

Original Paper EŠects of living in a target language country on the acquisition of English: Proˆciency in production of rhythmic patterns and TOEIC score

Abstract This study investigated the eŠects of living in the country of a target language on learners' acquisition of English durational patterns with respect to interstress intervals (ISIs). We were interested in nding out what kind of eŠects the experience of living abroad had and how much eŠect it exerted on the learners' proˆciency level. We were also interested in investigating whether the age of arrival in the country of a target language could be a factor aŠecting the acquisition of spoken language. Production experiments were carried out to investigate the durational patterns used by four groups of speakers: adult native speakers of American English (AMR), American third graders (G3), Japanese learners of English who had lived in the U.S. (RTN), and Japanese learners of English who had neither lived nor studied in the U.S

Present state analysis and measurement of pronunciation training effectiveness in English acquisition : Relationships between production patterns and English proficiencies

Juntendo UniversityNational Institute for Japanese Language and LinguisticsJuntendo Universit