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All Journal Majalah Kulit, Karet, dan Plastik RESLAJ: Religion Education Social Laa Roiba Journal
Rambat Rambat, Rambat
Departemen Kimia, Universitas Gadjah Mada, Yogyakarta Balai Besar Kulit, Karet dan Plastik, Yogyakarta
Religion Economics, Econometrics & Finance Education Engineering Environmental Science Social Sciences

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Pembuatan kulit atasan sepatu bebas krom Widari, Widari; Rambat, Rambat; Suparti, Suparti
Majalah Kulit, Karet, dan Plastik Vol 29, No 2 (2013): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.968 KB) | DOI: 10.20543/mkkp.v29i2.197

Abstract

ABSTRACTThe purpose of this study was to obtain the process formulation for leather tanning in manufacturing chrome-free upper leather. The tanning process used vegetable tanning material (mimosa), syntan, and combination of vegetable-syntan. The leather were prepared using 25, 30, and 35% of mimosa, 10, 15, and 20% of syntan, and 15:10; 15:15; and 20%:15% of mimosa:syntan. Chrome tanning material 6% was used as control. Based from the results of physical testing according to SNI 0234:2009, the resulting leather met the quality requirements for shoe upper leather. Tanning process with 20% syntan gave the best result.Keywords: chrome, vegetable, syntan, leather, shoesABSTRAKTujuan dari penelitian ini adalah memperoleh formulasi tahapan proses penyamakan kulit dalam pembuatan kulit atasan sepatu bebas krom. Proses penyamakan menggunakan bahan penyamak nabati (mimosa), syntan dan kombinasi antara nabati–syntan. Variasi perlakuan ditetapkan pada penggunaan bahan nabati 25, 30 dan 35%, bahan penyamak syntan 10, 15 dan 20%, dan kombinasi nabati:syntan 15:10, 15:15 dan 20%:15%. Sebagai kontrol adalah bahan penyamak krom 6%. Ditinjau dari hasil uji fisika dengan tolok ukur SNI 0234:2009, kulit hasil penelitian telah memenuhi persyaratan mutu kulit untuk atasan sepatu. Proses penyamakan terbaik diperoleh dengan penggunaan syntan 20%.Kata kunci: krom, nabati, syntan, kulit jadi, sepatu
Kepemimpinan Transformasional Kepala Sekolah dalam Meningkatkan Motivasi Kerja Guru di Sekolah Dasar Negeri 172 Bengkulu Utara Sihandi, Sihandi; Rambat, Rambat; Connie, Connie
Reslaj: Religion Education Social Laa Roiba Journal Vol. 7 No. 11 (2025): RESLAJ: Religion Education Social Laa Roiba Journal
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/reslaj.v7i11.9993

Abstract

This research aims to describe the transformational leadership of principals in improving the motivation of teachers' work at public elementary school 172 Bengkulu Utara which includes: idealized influence, providing inspirational motivation to teachers , encouraging intellectual stimulation in the implementation of the duties of teachers, providingin dividualized consideration to teachers at school. The method used was descriptive qualitative with interview, observation, and documentation techniques. Data analysis was done using Miles and Huberman interactive model. The results of the study show (1) The principal demonstrates ideal influence through exemplary attitudes, integrity, and ethical practices that build a healthy organizational culture and increase teacher loyalty and performance; (2) Through inspirational motivation, the principal strengthens teacher involvement by conveying a clear vision, providing emotional support, and forming a participatory and adaptive work climate; (3) Principal sencourage intellectual stimulation by creating an innovative and collaborative environment, facilitating professional development, and appreciating teachers' creativity; (4) With individualized attention, principals support the development of teachers' potential through personal communication, training, mentoring, and empathic approaches that strengthen the positive work climate and quality of learning.
Co-Authors Connie, Connie Sihandi, Sihandi Suparti Suparti Widari Widari, Widari