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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Pendidikan Usia Dini
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EFEKTIVITAS STRATEGI PEMBELAJARAN DAN PENGALAMAN GERAK TERHADAP KREATIVITAS GERAK SISWA KELAS AWAL SEKOLAH DASAR SUMANTRI, MOHAMAD SYARIF; YUNENGSIH, ENENG; -, HASANUDIN
Jurnal Pendidikan Usia Dini Vol 11 No 1 (2017): Jurnal Pendidikan Usia Dini, Volume 11 Nomor 1 April 2017
Publisher : Program Studi Magister Pendidikan Anak Usia Dini

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (526.209 KB) | DOI: 10.21009/JPUD.111.04

Abstract

The objective of the research is to study the effect of learning strategy and movement experiences toward the movement creativity of early primary student. The research used 2 X 2 factorial design and was with n of 48 children who was selected by simple random sampling technique. The results of the research are: (1) there is a significant difference of the movement creativity between those who are given taught by Inductive learning strategy and deductive learning strategy in the process of movement creativity. The movement creativity of those who are given taught by inductive learning strategy is higher than those who are given taught by deductive learning strategy. (2) for student who have high a experiences movement, it was found that student movement creativity taught by inductive learning strategy is higher than deductive learning strategy. (3) for the student who have low experirnces movement, it was found that the children movement creativity taught by deductive learning strategy is not different than inductive learning strategy. (4) there is an influence of interaction between giving the learning strategy and experiences movement towards the early primary movement creativity. It can be concluded that learning strategy and experiences movement in the student creativity. Keywords: Learning strategy, experiences movement, movement creativity
Peningkatan Sifat Mekanik AISI 4130 Low Steel Alloy Melalui Perlakuan Panas Frista, Greida; Notonegoro, Hamdan Akbar; -, Hasanudin
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 2, Oktober 2017
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.2309

Abstract

Baja AISI 4130 merupakan baja paduan rendah (low steel alloy) yang mengandung kromium dan molibdenum. Baja ini memiliki sifat ulet atau daktil serta mempunyai faktor temperatur yang tinggi sehingga banyak digunakan dalam industri.  Pada bilah turbin exhaust AISI 4130 Low Steel Alloy yang dipasang pada unit boiler pembangkit listrik batubara, ditemukan terjadinya penipisan akibat bergesekan dengan partikel udara yang menabrak bilah saat berputar. Untuk mengatasi hal tersebut maka telah dilakukan usaha meningkatkan sifat mekaniknya dengan perlakuan panas melalui proses hardening dan tempering  selama 30 menit. Dari tiap proses tersebut¸ masing-masingnya di quenching dengan air dan oli. Dalam penelitian ini dibandingkan antara variasi suhu hardening 800 oC dan 900 oC dengan variasi suhu tempering 400 oC, 500 oC, dan 600 oC untuk memperoleh hasil perlakuan yang optimal. Hasil penelitian menunjukkan bahwa ketahanan aus yang optimal diperoleh dari proses hardening pada suhu 900 oC dan tempering pada suhu 500 oC. Proses ini akan menghasilkan AISI 4130 Low Steel Alloy yang lebih tahan keausan terhadap pengaruh lingkungan dan memiliki struktur martensite-bainite dengan kandungan ferrite yang tetap.
Co-Authors Frista, Greida Mohamad Syarif Sumantri Notonegoro, Hamdan Akbar YUNENGSIH, ENENG