Sugeng Supriadi, Sugeng
Universitas Indonesia

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Pengaruh kecepatan drum proses terhadap sifat fisik kulit kambing untuk sarung tangan golf Supriadi, Sugeng; Purnomo, Eddy; Meiyanti, Meiyanti
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

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Abstract

Fifteen pieces of wet blue were devided into three groups of equal number of pieces. All of the group were processed into glove leather with drum rotational speed of 15 RPM and 25 RPM resfectively. Analysis of varians showed that the speed effected the tensile strength, tensile stretch, elongation, and tear strength of the leather obtained. The leather processed at 25 RPM gave the highest tensile strength (138,56 kg/cm2) tensile stretch (29,30 mm), elongation (58,60%), and tear strength (30,53 kh/cm).   INTISARI Penelitian ini bertujuan untuk mengetahui pengaruh kecepatan drum terhadap sifat fisik kulit sarung tangan. Lima belas lembar kulit wet blue dibagi menjadi tiga kelompok yang sama jumlahnya. Masing-masing kelompok diproses menjadi kulit sarung tangan dengan variasi kecepatan drum 15 RPM, 20 RPM, dan 25 RPM. Analisa variansi menunjukkan terdapat perbedaan nyata diantara perlakuan terhadap kekuatan tarik, pertambahan mulur, persen pertambahan mulur dan ketahanan sobek. Hasil penelitian menunjukkan bahwa kulit yangdiputar dengan kecepatan 25 RPM memberikan nilai rata-rata tertinggi pada kekuatan tarik, pertambahan mulur, persen pertambahan mulur, dan ketahanan sobek masing-masing sebesar 138,56 kg/cm2, 29,30 mm, 58,60 % dan 30,53 kg/cm
Pengaruh kecepatan drum proses terhadap sifat fisik kulit kambing untuk sarung tangan golf Supriadi, Sugeng; Purnomo, Eddy; Meiyanti, Meiyanti
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (912.92 KB)

Abstract

Fifteen pieces of wet blue were devided into three groups of equal number of pieces. All of the group were processed into glove leather with drum rotational speed of 15 RPM and 25 RPM resfectively. Analysis of varians showed that the speed effected the tensile strength, tensile stretch, elongation, and tear strength of the leather obtained. The leather processed at 25 RPM gave the highest tensile strength (138,56 kg/cm2) tensile stretch (29,30 mm), elongation (58,60%), and tear strength (30,53 kh/cm).   INTISARI Penelitian ini bertujuan untuk mengetahui pengaruh kecepatan drum terhadap sifat fisik kulit sarung tangan. Lima belas lembar kulit wet blue dibagi menjadi tiga kelompok yang sama jumlahnya. Masing-masing kelompok diproses menjadi kulit sarung tangan dengan variasi kecepatan drum 15 RPM, 20 RPM, dan 25 RPM. Analisa variansi menunjukkan terdapat perbedaan nyata diantara perlakuan terhadap kekuatan tarik, pertambahan mulur, persen pertambahan mulur dan ketahanan sobek. Hasil penelitian menunjukkan bahwa kulit yangdiputar dengan kecepatan 25 RPM memberikan nilai rata-rata tertinggi pada kekuatan tarik, pertambahan mulur, persen pertambahan mulur, dan ketahanan sobek masing-masing sebesar 138,56 kg/cm2, 29,30 mm, 58,60 % dan 30,53 kg/cm
RANCANGBANGUN GAME EDUKASI PENGENALAN HURUF HIJAIYAH DENGAN GAME EGINE CONSTRUCT 2 Supriadi, Sugeng
Buffer Informatika Vol 4, No 1 (2018)
Publisher : Teknik Informatika Fakultas Ilmu Komputer Universitas Kuningan

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The potential of carbonate apatite as an alternative bone substitute material Rahyussalim, Ahmad Jabir; Supriadi, Sugeng; Marsetio, Aldo Fransiskus; Pribadi, Pancar Muhammad; Suharno, Bambang
Medical Journal of Indonesia Vol 28, No 1 (2019): March
Publisher : Faculty of Medicine Universitas Indonesia

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Abstract

Bone reconstructive surgery has become a common procedure, and bone transplantation has become the second most frequently performed tissue transplantation procedure worldwide. Therefore, the need for bone substitute materials has increased. Artificial bone substitutes exhibit osteoconductive properties and feature several advantages, including abundant resources, low cost, and low donor site morbidity. Carbonate apatite (CO3Ap) is a calcium phosphate ceramic that can be used as a synthetic bone graft. The carbonate content of this ceramic is similar to that of bone apatite. In this review, we show that carbonate apatite can be degraded given its chemical reactivity in a weakly acidic environment and through osteoclast resorption. Moreover, it is osteoconductive and promotes bone tissue formation without fibrotic tissue formation. Additionally, microstructural analysis revealed that new bone tissue is formed within the bone graft itself.