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INDONESIA
Jurnal technoscientia
Published by Institut Sains dan Teknologi AKPRIND
ISSN : 19798415     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Arjuna Subject : -
Articles 14 Documents
 1   2 
Search results for , issue "Technoscientia Vol 12 No 1 Agustus 2019" : 14 Documents clear
SISTEM MONITORING DETAK JANTUNG MENGGUNAKAN MIKROKONTROLER Santoso, Gatot; -, Subandi; Hani, Slamet; Nugroho, Agung Wahyu
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

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Abstract

The heart is a human organ that has a vital function. Small flaws in the heart organ can have a big effect on our body. In general, our heart beats around 60-100 times in one minute. If you exceed 100 times and less than 60 times every minute means your heart is experiencing an abnormal beat. Because some patients who suffer from heart need the automation of early detection. The development of electronic technology makes it possible for heart examinations to be carried out by the patient himself. This research aims to design and build a device to monitor heart rate using a microcontroller. Noise suppression on the ECG signal, heart rate data that has been detected and processed will be compared with normal and abnormal values ​​of the heartbeat. Furthermore, the microcontroller will determine how the heart condition is detected. From the results of the study the heart rate monitoring system using a microcontroller input voltage of 3.7 V DC was changed by the step up module to 5 V DC with a magnitude of error percentage of 0.863% and a charger module used to charge batteries with 4.2 V DC voltage and the magnitude of the error percentage amounted to 0.119%. The amped pulse sensor has an output voltage value of 2.4 V when it is relaxed and 2.6 V when it is beat, and this sensor has a constant and significant output voltage value in accordance with the rhythm of the heartbeat. The heart rate monitoring tool that is made can measure accurately and precisely, because it has a fairly small average error value of 1,727%.
PEMANFAATAN BONGGOL JAGUNG SEBAGAI BIOETANOL Suseno, Hadi Prasetyo
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

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Abstract

Indonesian corn production data in 2018 reached 30 million tons, and generally, corncobs have not been utilized. This research is processing corncobs into bioethanol as an effort to exploit the potential of abundant corncobs. The process is carried out in 3 stages, namely hydrolysis with acid (H2SO4 0.5N), fermentation with bread yeast (fermipan), and distillation at 1000C. The study conducted in a three-neck flask equipped with heating, stirring, and turning cooling. The research material used was 40 grams of corncobs powder, H2SO4 0.5N as much as 300 ml, yeast 3 grams, and urea 0.1 gram. The hydrolysis process was carried out using 40gr of corncobs powder, and 0.5N H2SO4 with a volume of 300 ml. Stirring is carried out at 140 rpm rotation with varying time and temperature. Next, the fermentation process is carried out by adding as much as 3 grams of yeast and 0.1 grams of urea. The fermentation process takes 3 days. The distillation process is carried out at a temperature of 1000C with a long time for 2-3 hours. Based on our research, it knows that the time and temperature of hydrolysis affect the ethanol content produced. Optimal addition of yeast at 0.4271% ethanol content is weighing 3 grams. The optimal fermentation time for ethanol content 0.66447% is at the time of fermentation of 3 days.
Jurnal Technoscientia vol 12 no 1 Agustus 2019-Cover-Redaksi-Daftar Isi -, Jurnal Teknologi Technoscientia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

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Abstract

Jurnal Technoscientia vol 12 no 1 Agustus 2019-Cover-Redaksi-Daftar Isi
Jurnal Technoscientia vol 12 no 1 Agustus 2019-Lengkap -, Jurnal Teknologi Technoscientia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2581.931 KB)

Abstract

Jurnal Technoscientia vol 12 no 1 Agustus 2019-Lengkap

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