Riad Syech
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Journal : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

RANCANG BANGUN ALAT PERCOBAAN MOMEN INERSIA DENGAN MENGGUNAKAN TIMER OTOMATIS Pratama, Hari Rizki; Syech, Riad; ', Sugianto
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has been conducted on designing of an automatic experiment ofmoment of inertia using a self-timer with a variation in radius of a cylinder as an inertialbody. This research was done using an experimental method and especially to design aself-timer calculation tools used in the experiment. The trial results showed that at 0.10m height average time for a cylinder rolling on an inclined plane with a slope of 2.87°for 2 m length could be represented by the regression equation that is y = 0.031x +0.400. Based on the result of the experiment, the coefficient of the moment of inertiaranged from 0.509 to 0.523 with a percentage error ranged from 1.800% to 4.600% andstandard deviation of experimental time measured from 0.011 to 0.034 seconds.
ANALISIS RUGI- RUGI DAYA PADA PENGHANTAR SALURAN TRANSMISI TEGANGAN TINGGI 150 KV DARI GARDU INDUK KOTO PANJANG KE GARDU INDUK GARUDA SAKTI PEKANBARU Radil, Muhammad; Syech, Riad; s, Sugianto
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has been conducted on analysis of power losses on electric power transmission line of 150 kV of Koto Panjang to Garuda Sakti Pekanbaru in March 2014. This research was conducted and its aim was to analyze the power losses in the transmission system 150 kV. Conductors used in the high-voltage transmission line wasACSR (Aluminium Conductor Steel Reinforced) which consisted of a mixture of aluminum and steel with a diameter of 28.71 mm. Results of the transmission lineshowed that the largest total conductivity obtained was 43,645,705.993 Watt at 13:00 PM while the lowest total conductivity was 37,313,100.282 Watt at 17:00 PM. Highermagnitude of the transmitted conductivity resulted in increased power loss with ACSRconductor resistance of 0.049 Ω so that the largest loss occurred at 13:00 PM with4435.645 Watt power loss and the lowest power loss was 3,221.784 Watt at 17:00 PM.Based on the results obtained above, the percentages of power lost every hour for amonth in March 2014, were between 0.0086% to 0.0102% with the percentage ofoverall average power loss was 0.095%. 
ANALISIS KUAT TEKAN BETON TANPA TULANGAN DENGAN MENGGUNAKAN METODE UJI TAK RUSAK BERDASARKAN KECEPATAN GELOMBANG SONIK Candra, Yudi; Syech, Riad; ', Sugianto
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research on the testing of concrete elasticity has been done in order to measure concrete compressive strength  using a non destructive test based on sonic wave velocity. An equipment that was used for this research was a Sonic Wave Analyzer (SOWAN). In this research, concrete samples were formed in cylindrical shape with 15 cm diameter and 30 cm length. The compressive strengths of this concrete were 19  , 23    , and 25      ( ⁄ ). After that the time delay of sonic wave was measured. The research results showed that primary and secondary sonic wave velocity, elasticity, and compressive strenght were    = 3525 m/s,    = 1950 m/s,  23240  x N/ , and  24 x    ( ⁄ )  respectively. Based on the data, it was concluded that this non destructive test based on sonic wave velocity can be used to measure the concrete compressive strength, because the values obtained were comparable to the values obtained using the Universal Testing Machine (UTM) which is a destructive test.
PENENTUAN KONDUKTIVITAS LISTRIK DAN KAJIAN KUALITAS AIR SUNGAI SIAK MENGGUNAKAN METODE JEMBATAN WHEATSTONE Aritonang, Alan Perdana; Syech, Riad; Tambunan, Walfred
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has  been done on  the determination of the electrical conductivity and  water quality  of Siak River water  using a Wheatstone bridge method  in   the  location around the rubber factory   of PT. RICRY. The research was begun by taking samples  of the Siak river water were taken on  five  points  which  have been determined at a distance of 10 meters from PT. RICRY when was low  and high  tide. Based on the  length  data  of wire L1  and L1,  it  could  be determined  the value of electrical resistance, resistivity  and electrical conductivity. The result showed that the value of  highest  electrical conductivity of the river  water  when the  sea  water was  at  high tide  was  58,513  .  10-6 (Ωm)-1, while the electrical conductivity of  the river  water at low tide  was 41,879  . 10-6 (Ωm)-1. A decent water for consumption has an  electrical conductivity of (300  -500).106(Ωm)-1(Mailinda, U. 2011). Based on  that  standard  electrical conductivity, Siak river  water  in  the  research location when the sea water  high tide and low tide are not worthy to be consumed because  of  too small  value  compared  to  the standard   value of electrical conductivity .
ANALISA FISIS PENGOLAHAN AIR BERSIH DI PERUSAHAAN DAERAH AIR MINUM TIRTA SIAK PEKANBARU Sinaga, Imam Wijayasastra; Syech, Riad; Malik, Usman
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has been done on physical analysis of clean water treatment at PDAM Tirta Siak Pekanbaru. The methods that used in this research was an experimental in order to analyze water treatment system, water debit which was distributed in the main pipe, and water velocity in the pipe. Raw water used in the water treatment plant uses water from the Siak River using intake. Intake on this water treatment uses two pumps with capacity of 140 liters / sec are used interchangeably to collect water. Raw water treated by coagulation, flocculation, sedimentation, filtration, and disinfection. Incoming raw water to be processed and distributed to the reservoir as the water ready to be distributed to consumers. Reservoir water discharge was obtained for 110 liters / sec or 410.4 m3/sec. Obtained debit water out of the water volume ratio of a specific time range that depends on the size of the pressure in the pipe. Based on the results of the average debit coming out in May 2014 at 9:00 to 10:00, 10:00 to 11:00, 11:00 to 12:00, 12:00 to 13:00, 13:00 to 14:00, 14:00 to 15:00 is 475,142 m3/sec, 443,594 m3/sec, 426,883 m3/sec, 431.755 m3/sec, 430.432 m3/sec, and 425.980 m3/sec, respectively. Water flow rate obtained 0.604 m/s, 0.610 m/s, 0.605 m/s, 0.612 m/s, 0.629 m/s, and 0.673 m/s, respectively.
ANALISIS KONSENTRASI LOGAM BERAT (Cu, Fe, Zn) KONDUKTIVITAS LISTRIK DAN DENSITAS AIR SUNGAI GAUNG DI DESA SEMAMBU KUNING KECAMATAN GAUNG KABUPATEN INDRAGIRI HILIR Segeryanti, Dahlia; Syech, Riad; Malik, Usman
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has been done on analysis of concentration of heavy metals (Cu, Fe, Zn) electrical conductivity and density of the Gaung river water. The method that used in this research was an experimental. The samples of Gaung river water in the village of Semambu Kuning was taken three times in each point: the Dusun Terentang, Dusun Sejahtera, and Dusun Mulia. Measurement of the concentration of heavy metals was performed by using Atomic Absorption Spectroscopy(AAS), while the electrical conductivity measurements were performed using conductivitymeter and density was measured by using a hydrometer. The results showed that the concentration of iron(Fe) from each points was 1.28x10-6 kg/l, 1,25x10-6 kg/l, and 1,32x10-6 kg/l, respectively. Concentrations of copper(Cu) oneach points was 0.0015x10-6 kg/l, 0.0051x10-6 kg/l, and 0.0053x10-6 kg/l. Concentrations of Zn(zinc) was found to be 0.0310x10-6 kg/l, 0.028x10-6 kg/l, and 0.0337x10-6 kg/l. which the electrical conductivity was 192,33x10-4 mho/m, 197,23x10-4 mho/m, and 199,9x10-4 mho/m. Otherwise the average density of the river water was 1166.7x10-3 kg/m3, 1200x10-3 kg/m3, and 1233.3x10-3 kg/m3, respectively for point 1, 2, and 3.
PENGGUNAAN GELOMBANG AKUSTIK PADA PROSES PEMISAHAN PARTIKEL PENGOTOR DALAM AIR DENGAN MENGGUNAKAN TABUNG RESONANSI Mayasari, Lifa Anggar; ', Defrianto; Syech, Riad
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has been done on the use of acoustic waves in order to separate pollutant particles in water. This research has been performed by an experimental method utilizing the second and the third harmonic mode of acoustic waves.  The results showed that the use of both modes was affected by their intensity. It was proved that the treatment of the second harmonic mode wave  yielded the  difference of concentration of water that depended on the intensity level ( IL ) of the wave.  The value of 0.035 mg/L, 0.09 mg/L, and 0.15 mg/L have been found respectively, for the IL of 83.2 dB, 92.4 dB, and 102.3 dB by second harmonic mode treatments to the water of 0.40  mg/L. Meanwhile, the use of the third harmonic mode wave treatments to the same water samples gave the differences of concentration of 0.07 mg/L, 0.11 mg/L, and 0.17 mg/L respectively, for the ILs of 65.9 dB, 75.2 dB, and 84.8 dB. It was showed that the treatment of the third harmonic resulted bigger difference concentration of the samples. The bigger the difference concentration, the better the separation of pollutant particle in the sample. It can be concluded that acoustic waves can  be used to separate the pollutant particles in water.
RANCANG BANGUN ALAT PENJERNIH AIR YANG TERCEMAR LOGAM BERAT Fe, Cu, Zn DALAM SKALA LABORATORIUMRANCANG BANGUN ALAT PENJERNIH AIR YANG TERCEMAR LOGAM BERAT Fe, Cu, Zn DALAM SKALA LABORATORIUM Syahputra, Andi; ', Sugianto; Syech, Riad
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research on design and construction of purification equipment of water contaminated by heavy metals Fe, Cu, and Zn was carried out. The equipment was utilized to purify water sample of Siak River at a distance of 1m from the PT. RICRY of rubber industry in Pekanbaru. Analysis was performed by using Atomic Absorption Spectrophotometer (AAS). The analysis results showed that the concentration of Cu, Fe and Zn before filtration process sequentially were 0.3809 ppm, 0.0051 ppm, and -0.0012 ppm. After being filtered twice showed an absorption percentage for type I sieve (with carbon) on the heavy metals sequentially were Fe 75%, Zn 14.29% and Cu 10.78%. Sieve type II (without carbon) absorption percentage of each heavy metal were Fe 59.5%, Zn 7.75%, and Cu 0.0%, while the water discharge at the sieve type I (with carbon) obtained an average water discharge of 0.164 645 x 10-2 m3/s, and the sieve type II (without carbon) of 0.17838 x 10-2 m3/s. Based on the result the sieve type I with carbon has a better result for water purification treatment.
ANALISA KOEFISIEN ABSORPSI BUNYI MATERIAL SERAT BATANG KELAPA SAWIT DENGAN GYPSUM MENGGUNAKAN SONIC WAVE ANALYZER Gunanda, Qory; Syech, Riad; Edisar, Muhammad
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has  been done  in  analyzing  a coefficient absorption of composite material of oil palm trunk fiber and gypsum using a sonic wave analyzer (SOWAN) and carried out using sound  wave of 150 Hz frequency.  Sample  was formed  as  a  cylinder made from gypsum  with  3:5  ratio  of water and gypsum,  formed  a  pipe with  7,5 cm  outer  diameter and heights  of 2 cm, 3 cm, 4 cm, 5 cm, and 6 cm (sample    thickness). The  pipe with the outer  diameter  of  6 cm  was used  for  making  a  cavity  in  the  samples  and  then the composed of oil palm trunk fiber of ± 1 cm length with the variation percentage of fiber of 12,24%, 24,48%, 36,73%, and 48,97% filled in to each sample. Ao (initial amplitude) and A (final  amplitude)  then  were  measured by  Sonic Wave  Analyzer (SOWAN) with the intensity  of  65 dB, 70 dB, 75 dB, dan 80 dB.  Results  of the measurements  showed that the bigger  percentation  of fiber,  the higher  coefficient of sound  absorption andthicker sample  produced  bigger the coefficient of sound absorption.  The biggest absorption  coefficient  was  0,4957,  due to the  sample with 6  cm thickness when the intensity  was  80 dB and the smallest  absorption  coefficient was  0,3088,  of the  sample with 2 cm thickness  when the intensity  was  65 dB. The maximum  absorptioncoefficients of the sample thickness of 2 cm, 3 cm, 4 cm, and 5 cm were 0,3557, 0,3779,0,4155,  and  0,4863,  respectively.  This  showed that  preparing the sample by method  ofarranging the oil palm stem's fiber inside the sample  was  more effective to  absorb  the sound for low frequencies (150Hz) if viewed from the standard of absorption coefficientof  gypsum  was  0.29  for  frequency  of  150  Hz.  Based on  the  results of  this study  the absorption  coefficients  exceed  the  minimum  limit  0.15  as suggested  ISO 11654 as a silencer.
PEMBUATAN DAN PENGUJIAN ALAT UNTUK MENENTUKAN KONDUKTIVITAS PLAT SENG, MULTIROOF DAN ASBES Selparia, Ersi; Ginting, Maksi; Syech, Riad
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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The use of conductors and insulators as household supplies industrial materials is increasing now a days. In this study, it carried out the design and testing tools todetermine the conductivity of Zinc plate, multiroof and asbestos. The method is heat transfer conduction by using an electric circuit of source direct current (DC). The result shows the largest conductivity values contained in the Zinc plate is 0.482 W / m°C and the lowest value is multiroof conductivity of 0.132 W / m°C.