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All Journal EINSTEIN (E-JOURNAL) MEDALION JOURNAL: Medical Research, Nursing, Health and Midwife Participation
Veryyon Harahap
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Control & Systems Engineering Dentistry Earth & Planetary Sciences Electrical & Electronics Engineering Health Professions Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Veterinary

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PENGARUH KARAKTERISTIK PASIR MERAH LABUHAN BATU SELATAN TERHADAP SIFAT MEKANIK (UJI SEM, DIFRAKSI SINAR X, UJI IMPAK) DARI BETON Veryyon Harahap; Mukti Hamzah Harahap
EINSTEIN (e-Journal) Vol 1, No 2 (2013): EINSTEIN
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (779.795 KB) | DOI: 10.24114/einstein.v1i2.5061

Abstract

Penelitian karakterisasi pasir merah sebagai bahan campuran beton telah dilakukan untuk mengetahui strukturnya dengan berbagai pengujian.Beton dibuat berbentuk Balok 15 x 15 x75 cm dengan standart SNI K123. Pada penelitian ini dibuat agregat halus (pasir merah) sebesar 25%, 50%, dan 75%,  dari berat agregat halus yang digunakan. Setelah melalui masa 28 hari kemudian beton diuji dengan metode Uji Impak dengan prosedur yang ada. Pengujian SEM pada Pasir Merah setelah di ayak. Dari hasil pengujian, diperoleh Hasil pengujian SEM memperlihatkan bahwa rongga pada pasir merah ukuran kecil, halus ukurannya bisa mencapai 1 µm-10 µm.Pengujian XRD Pada Pasir Merah setelah di ayak, dicuci dan dikering. Dari hasil pengujian, diperoleh Hasil pengujian XRD terdapat unsur-unsur seperti SiO2 (silikon Oxide), TaO2 (Tantalum Oxide), FeNi (Iron Nikel), FeC (Iron Carbide), TaO (Tantalum Oxide), Fe2C (Iron Carbide) memperlihatkan bahwa grafik menunjukkan nilai intensitasnya silikon pasir merah tinggi. Dari hasil pengujian impak diperoleh kuat patah maksimum beton pasir merah pada komposisi 50% dengan kekuatan 18,6 Mpa. Hasil ini melampaui kekuatan yang ditetapkan oleh Badan Standart Nasional Indonesia.Hal ini dimungkinkan oleh ukuran pasir yang lebih halus dan kandungan silicon yang lebih banyak.
RADIOGRAPHY TECHNIQUE OF OSSA MANUS WITH SUSPECTED FRACTURE OF PROXIMAL PHALANG DIGITI 4 AND 5 SINISTRA IN RADIOLOGY INSTALLATION OF EFARINA HOSPITAL Pangkalan KERINCI, 2020 Bambang Kustoyo; Veryyon Harahap; Awan Pelawi; Sabrina Suci Zasneda; Sihat Manisia Siboro; Dea Rahmayani Barus
MEDALION JOURNAL: Medical Research, Nursing, Health and Midwife Participation Vol. 2 No. 4 (2021): December
Publisher : PT. Radja Intercontinental Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59733/medalion.v2i4.74

Abstract

Radiographs of the human bones are the bones consisting of the carpal bones, the metacarpal bones and the phalanges. Fractures are broken bones, usually caused by trauma or physical exertion, the force and angle of the force, the condition of the bone itself, and the soft tissue around the bone will determine whether the fracture is complete or incomplete. A complete fracture occurs when the entire bone is broken, whereas an incomplete fracture does not involve the entire thickness of the bone. The occurrence of fractures caused by traffic accidents. The purpose of this study was to determine the procedures for carrying out radiography of the human oss with suspected fracture at Efarina Pangkalan Kerinci Hospital. The type of research used was descriptive with data collection techniques by means of observation, documentation and interviews. The results of the examination of the human oss in fracture cases at Efarina Pangkala Kerinci Hospital are generally using postero-anterior and oblique projections. The ideal x-ray machine for ossa manus radiography is a portable x-ray unit or a mobile x-ray unit with relatively low capabilities. The x-ray film used is a high speed type combined with a fast screen intensifying (IS) where this type of film and intensifying screen (IS) can produce images with good detail and sharpness. Thus the radiation dose can also be reduced for the patient and the operator himself. The x-ray film washing process used should preferably use automatic processing. It is hoped that it can be used as a reference for radiographic results, especially in fracture cases.
Co-Authors Awan Pelawi Bambang Kustoyo Dea Rahmayani Barus Mukti Hamzah Harahap Sabrina Suci Zasneda Sihat Manisia Siboro