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All Journal Jurnal Riset Industri JFA (Jurnal Fisika dan Aplikasinya) Indigenous: Jurnal Ilmiah Psikologi JUARA : Jurnal Olahraga Metalurgi Jurnal Penelitian dan Pengembangan Kesehatan Masyarakat Indonesia (JPPKMI) Makara Journal of Technology
Setyo Purwanto
National Nuclear Agency, Serpong, Tangerang Selatan15310, Indonesia
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Other

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Effects of Plasma Sintering on the Post TIG Weld Joint of Fe-15Cr-25Ni Austenitic Stainless Steel Parikin, Parikin; Dani, Mohammad; Dimyati, Arbi; Insani, Andon; Deswita, Deswita; Aziz, Ferhat; Mardiyanto, Mardiyanto; Mustofa, Salim; Purwanto, Setyo; Adhika, Damar Rastri; Syahbuddin, Syahbuddin; Huang, Ching An
Makara Journal of Technology Vol. 26, No. 1
Publisher : UI Scholars Hub

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Abstract

Arc-plasma sintering (APS) for 5 s has been applied to the post tungsten inert gas (TIG) weld joint of Fe–15Cr–25Ni austenitic stainless steel (ASS). The treatment is intended to observe the effect of heat generated by plasma on micro-crystal structures around the fusion zone (FZ), especially internal stress relief in steel after being subjected to welding. The effect of stress relief in weld was measured using the neutron diffraction technique. ASS that is predominantly composed of Fe, Cr, and Ni elements, with contents of 57%, 15%, and 25%wt. respectively, was cut into two parts. Both parts were then welded with TIG without filler with a current and voltage of 60 A and 50 V, respectively. After APS for 5 s, the sample was characterized and analyzed using high-resolution powder neutron diffractometer at a high-temperature laboratory facility. The results show that the tensile residual stress decreased with the APS heat input. The residual stresses significantly decreased from 82.40 MPa to 1.21 MPa in the FZ and continued almost evenly from 65.92 MPa to 1.24 MPa in the heat-affected zone (HAZ). The residual stress is a tensile stress that can reduce the mechanical strength of materials. This condition is also applicable to applied loads. A microstructure gives a confirmation that the C element migrates from the FZ to HAZ. The content was very high in dark traces. The C element reacts to Cr and O to form chromium carbide (Cr23C6) and chromium carbonyl (CrC6O6), respectively. It rapidly migrates among its grain boundaries. It may also weaken materials and probably initiate intergranular cracks.
Hubungan antara Intensitas Menjalankan Dzikir Nafas dengan Latensi Tidur Purwanto, Setyo
Indigenous Vol 1, No 1 (2016): May
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/indigenous.v1i1.3713

Abstract

Latensi tidur adalah periode waktu antara persiapan untuk tidur dan awal tidur yang sebenarnya. Latensi tidur merupakan indikator utama untuk menentukan kualitas tidur seseorang. Semakin lama latensi tidur yang diperlukan seseorang untuk tertidur maka kualitas tidur seseorang tersebut juga semakin rendah. Dzikir nafas merupakan sebuah alternatif metode terapi untuk dapat mengurangi latensi tidur seseorang sehingga kualitas tidurnya lebih baik. Dalam dzikir nafas terdapat relaksasi dan meditasi transendental yang efektif untuk membuat relaks dan akhirnya tertidur. Tujuan penelitian ini adalah untuk mengetahui hubungan antara intensitas menjalankan dzikir nafas dengan latensi tidur.  Penelitian ini merupakan penelitian observasional dengan pendekatan crossectional. Subjek penelitian adalah jamaah dzikir nafas sebanyak 21 responden. Data intensitas dzikir nafas dan latensi tidur  diperoleh melalui pengisian kuisioner. Hasil penelitian menunjukkan bahwa skor intensitas dzikir nafas rata-rata responden adalah 81,14  sedangkan latensi tidur rata-rata adalah 13,05 menit. Analisis hubungan dilakukan dengan uji Wilcoxon Signed Ranks test  menunjukkan nilai p=0,00, hal ini menunjukkan bahwa terdapat  hubungan yang secara sangat signifikan antara intensitas dzikir nafas dengan latensi tidur.  Semakin tinggi  intensitas melakukan dzikir nafas seseorang maka semakin rendah latensi tidurnya.Kata kunci : dzikir nafas, intensitas, latensi, tidur
PSYCHOSOCIAL DEVELOPMENT THROUGH TRADITIONAL GAMES AND SPORTS IN ELEMENTARY SCHOOL STUDENTS Julianti, Rekha Ratri; Suherman, Adang; Ma'mun, Amung; Budiana, Dian; Zinat Ahmad, Irfan; Purwanto, Setyo
JUARA : Jurnal Olahraga Vol 9 No 3 (2024): Juara : Jurnal Olahraga
Publisher : STKIP Muhammadiyah Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33222/juara.v9i3.4261

Abstract

The purpose of this study was to determine the formation of psychosocial through traditional games and sports. Various traditional games and sports activities such as clogs, boy-boyan, cat-mouse, hopscotch, gobak sodor, snakes and ladders and stilts can create things that arouse students' social attitudes. This creates a learning experience to be able to train teamwork, goal setting, psychosocial adjustment needs and psychosocial adjustment needs from social relationships. This study used an experimental method with a pretest and posttest design with a sample of 25 elementary school students. The results showed that there was a significant influence on increasing psychosocial in the sample given the traditional games and sports program.
Co-Authors Achmad Hindasyah, Achmad Adang Suherman Agus Taufik, Agus Anang Lastriyanto Andon Insani Arbi Dimyati Aris Purwanto Bambang Heru Bruce A. Welt, Bruce A. Damar Rastri Adhika Deswita Deswita Dian Budiana, Dian Ferhat Aziz Hadi Karia Purwadaria, Hadi Karia Huang, Ching An Isao Sakamoto Julianti, Rekha Ratri Kurniawan Yuniarto Listyani Hidayati Ma'mun, Amung Mardiyanto Mardiyanto Mashadi Mashadi Mishima, Kenji Mohammad Dani Parikin Parikin Salim Mustofa Siti Zulaekah Syahbuddin Syahbuddin Titi Candra Sunarti Welt, Bruce Ari Yuli Kusumawati Zinat Ahmad, Irfan