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All Journal R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Pengabdian UntukMu NegeRI Turbo : Jurnal Program Studi Teknik Mesin JURNAL PHOTON Jurnal Teknik Mesin Indonesia Journal of Applied Materials and Technology
Ahmad Kafrawi Nasution, Ahmad Kafrawi
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Nursing Physics Social Sciences

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Journal : JURNAL PHOTON

 1 
ANALISIS POTENSI LIMBAH TULANG AYAM DAN IKAN DARI PKL SEBAGAI SUMBER MINERAL KALSIUM FOSFAT Nasution, Ahmad Kafrawi; Permata, Ekie Gilang
Sistem Informasi Vol 6 No 02 (2016): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

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Abstract

This study aimed to find out how much potential waste from chicken bones and fish collected from street vendors in the city of Pekanbaru to pulverized bone and mineral calcium phosphate nanoparticle size. This research is motivated by many vendors who are considered disturbing the aesthetics and cleanliness of the city. The research was conducted in the city of Pekanbaru by using primary data obtained from a survey of street vendors. While secondary data obtained from the Office of Market town of Pekanbaru, statistical data and the results of previous studies. Data samples are taken randomly from street vendors in the city of Pekanbaru based on the types of food sold as roasted chicken and fried catfish. The process of making bone powder are derived from chicken and fishbones through several stages. For bone drying process is done at a temperature of 100 OC for 15 minutes. As for the bone turnover process is performed at a temperature of 700 OC for 6 hours. The results showed that the huge potential of the waste bones if used as a source of mineral raw materials Calcium Phosphate. This research could also describe an increase in economic value if it produces powder bone and bone powder with the size of the nanoparticles.
APLIKASI BIOMATERIAL DALAM KARDIOLOGI: STENT KORONARIA Nasution, Ahmad Kafrawi
Sistem Informasi Vol 2 No 2 (2012): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

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Research in the field of materials has become widespread. Biomaterials is a term that is aimed at material that is part of medical implants. Biomaterials have been used by humans both to improve appearance and restore organ function. Modern biomaterials are still needed and biofunctionality study of biocompatibility of implants. Biocompatibility must be referring to the material properties to be safe and work in harmony with the body without causing other harmful effects. An important aspect to consider from the biocompatibility of products starting from the fabrication process, corrosion resistance and modification of implant materials and coatings.
PENENTUAN PARAMETER KETEBALAN LAPISAN PROSES ELECTROPLATING PADA ALUMINIUM DAN BAJA Nasution, Ahmad Kafrawi; Nawangsari, Putri; Cahyono, Hendro; -, Mustaqim
Sistem Informasi Vol 4 No 1 (2013): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

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Abstract

Proses perlakuan permukaan dapat dimanfaatkan untuk memperbaiki tampilan dari sebuah logam, satu diantaranya adalah proses pelapisan (electroplating). Untuk mendapatkan tampilan yang bagus dengan waktu yang efektif, parameter pelapisan sangat menentukan. Untuk itu dilakukan penentuan parameter ketebalan lapisan logam paduan aluminium AA5051 dengan waktu pencelupan 30, 40, 50 dan 60 menit dengan tegangan 3 dan 10 Volt. Sedangkan logam plain carbon steel dengan waktu pencelupan 30, 40, 50 dan 60 menit dengan tegangan 3 dan 8 Volt. Dari parameter di atas diperoleh rata-rata laju ketebalan pelapisan untuk logam paduan aluminium AA5051 yang tertinggi 1.40 μm per menit (30 menit pada 10 Volt) dan terendah adalah 1.00 μm per menit (40 menit pada 3 Volt). Dan untuk logam plain carbon steel yang tertinggi 1.77 μm per menit (60 menit pada 4 Volt) dan terendah adalah 0.35 μm per menit (40 menit pada 4 Volt).
PERBANDINGAN NILAI KEKUATAN TARIK KOMPOSIT MENGGUNAKAN METODE HAND LAY UP DAN METODE VARI Utami, Lega Putri; Ginting, Delovita; Nasution, Ahmad Kafrawi; Istana, Budi
Sistem Informasi Vol 9 No 2 (2019): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

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Abstract

Some Types of the method of making composite materials are the Vacuum Assited Resin Infusion (VARI) Method and the Hand Lay Up Method. The purpose of this study was to compare the tensile strength of composite materials made using the hand lay up and VARI methods. The types of fibers used as composite materials are palm frond fibers and matrices used in polyester resin. Composites reinforced with palm fronds are printed using the hand lay up and VARI methods. The results showed the value of composite tensile strength with the hand lay up method of 27.37 MPa and composite tensile strength using the VARI method of 28.40 MPa. From the results of the study, the differences in the tensile strength values of the two methods were obtained.
Co-Authors Abrar Ridwan Alfindo Budi Istana Delovita Ginting, Delovita Hendro Cahyono, Hendro Ilhami, Ibnu Zaki Israyandi Israyandi Lega Putri Utami Legisnal Hakim Mustaqim - Nurrahmawati, Puji Permata, Ekie Gilang Putri Nawangsari, Putri Rafhan, Muhammad Rendy Gunawan Siregar, Banuaran Ibrahim Sunaryo Sunaryo Sunaryo Sunaryo Sunaryo Wulandari, Gerhana Yudho, Agung Laksono