Articles

Found 16 Documents
Search

ANALISIS PENCEMARAN LIMBAH BERDASARKAN NILAI RESISTIVITAS M, Juandi
Jurnal Ilmu Lingkungan Vol 3, No 01 (2009)
Publisher : Jurnal Ilmu Lingkungan

Show Abstract | Original Source | Check in Google Scholar | Full PDF (599.404 KB)

Abstract

Research was conducted to analyze the pollution of waste based on the value resistivity, wherethe relationship is resistivity of BOD and COD at 10 cm depth in the Inlet IPAL PT. RAPPindicates that there is a good correlation between the parameters of waste with a BOD andCOD values resistivity, respectively: BOD = -9.8465 + 552.87 and -645.68 + COD = 18,529.COD has trend greater than the BOD of resistivity for change in other words the presence ofCOD of waste is likely to be greater influence resistivity price. That the value of BOD and CODas a function of depth in the system outlet IPAL PT. RAPP is BOD values are generally smallercompared with the COD value.
ANALISA PENCEMARAN AIR TANAH BERDASARKAN METODE GEOLISTRIK STUDI KASUS TEMPAT PEMBUANGAN AKHIR SAMPAH MUARA FAJAR KECAMATAN RUMBAI M, Juandi
Jurnal Ilmu Lingkungan Vol 3, No 02 (2009)
Publisher : Jurnal Ilmu Lingkungan

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1961.803 KB)

Abstract

The reseacrh to analyze pollution of ground water based on Geo-electrical methods cased onMuara Fajar Landfill Kecamatan Rumbai. The result obtained that resistivity value on point 2 atnorth of Muara Fajar Landfill (0,702-8.250 ohm-m), on point 4 at west of landfill (0,144-501.335 ohm-m), on point 3 at south of landfill (0,0103-11588 ohm-m), on point 1 at east oflandfill (0,601-51.294 ohm-m), on point 5 at centre of landfill (0,737-1.468.744 ohm-m). Basedon resistivity value above, all of the points had been polluted by leachet, dominantly at northand west point of landfill cause resistivity value less 10 ohm-m (fresh water). Resistivity valuehad showed that leachet flowed towards centre of landfill then around it and polluted groundwater systems of community around.
PENYELIDIKAN POLA SEBARAN LIMBAH KARET BAWAH PERMUKAAN TANAH DENGAN METODE GEOLISTRIK M, Juandi
Jurnal Ilmu Lingkungan Vol 4, No 01 (2010)
Publisher : Jurnal Ilmu Lingkungan

Show Abstract | Original Source | Check in Google Scholar | Full PDF (3796.148 KB)

Abstract

Research has been conducted to determine the distribution pattern of rubber waste in the sub-surface by application of geoelectric methods. The reading showed that the resistivitydistribution were zero (at z = 0) before registration of rubber waste. The minimum value ofresistivity were of 13.1 ohm.m, while the maximum of 112 ohm.m. Distribution pattern of rubberwaste in the subsurface revealed that the minimum value of resistivity were of 20.8 ohm.m, whilemaximum of 122 ohm.m. The resistivity distribution before rubber waste application was of at z= 33 cm that accounts for the minimum value of resistivity 31.5 ohm.m, while maximum 124ohm.m. Distribution pattern of the waste in the subsurface come up with minimum and maximumof resistivity distribution of at z = 33 cm the were 7.11 ohm.m,and 96.6 ohm.m, respectively.
PENYELIDIKAN POLA SEBARAN LIMBAH DETERJEN BAWAH PERMUKAAN TANAH DENGAN APPLIKASI GEOLISTRIK M, Juandi
Jurnal Ilmu Lingkungan Vol 5, No 01 (2011)
Publisher : Jurnal Ilmu Lingkungan

Show Abstract | Original Source | Check in Google Scholar | Full PDF (969.32 KB)

Abstract

Schlumberger geoelectric configuration can be applied to investigate the presence anddistribution of detergent waste water below the surface. The resistivity of detergent provide alarge response at near point where the water sprinkler, while the resistivity decreases at point farfrom the water sprinkler. The resistivity value of the pure water, pure detergent and grossdetergent are 20.0 Ohm.m, 12.4 Ohm.m and 11.2 Ohm.m, respectively for the measurement ofthe track AB, while the values of resistivity for the measurement of track CD are 16.8 ohm.m,13.3 ohm.m, and 10.9 ohm.m, respectively
Analisa Konduktivitas Hidrolika Pada Sistim Akuifer M, Juandi; Ahmad, Adrianto; Edisar, Muhammad
Komunikasi Fisika Indonesia Vol 9, No 04 (2012)
Publisher : Komunikasi Fisika Indonesia

Show Abstract | Original Source | Check in Google Scholar

Abstract

Hasil penelitian telah diperoleh bahwa ada empat lapisan penyusun akuifer bebas yangditemukan berdasarkan data geolistrik dengan urutan litologinya adalah tanah penutup, pasir, clay danlempung. Ketebalan lapisan yang diperoleh berdasarkan data geolistrik berturut – turut adalah 10 m,2,5 m, 1 m dan 1 m. Parameter akuifer bebas dalam hal ini konduktivitas hydraulik rata – rata sistimakuifer yang diteliti adalah sebesar 0,795 m/hari. Nilai konduktivitas hydraulic rata-rata inimerupakan factor untuk melihat kondisi keberlanjutan suatu akuifer bawah tanah.
ESTIMASI PERMEABILITAS RESERVOIR DARI DATA LOG MENGGUNAKAN JARINGAN SYARAF TIRUAN PADA FORMASI MENGGALA PT CHEVRON PACIFIC INDONESIA Zamri, Liana; M, Juandi; Edisar, Muhammad
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

Show Abstract | Original Source | Check in Google Scholar

Abstract

A research has been conducted to apply artificial neural network in order to predict permeability of reservoir. Method of this research was analytical description. Backpropagation neural network used input layer of 4 neurons, hidden layer of 6 neurons, and output layer of 1 neuron, which was optimal architecture in this research. Result of this research showed that the biggest correlation was 0,9999 for BL#33 well and the lowest correlation was 0,9977 for BL#19 well. The rmse value of BL#19 well was 1,02%, BL#33 well was 0,21%, and was 2,42% for BL#34 well. When rmse decreased, prediction disposed approximated true value. This results indicated the solution based on backpropagation model was reasonable and feasible.
PENYELIDIKAN KEBOCORAN PIPA BAWAH TANAH MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER-SCHLUMBERGER BERDASARKAN MODEL FISIS SKALA LABORATORIUM Siregar, Dodi Irwan; M, Juandi; Edisar, Mhd
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

Show Abstract | Original Source | Check in Google Scholar

Abstract

The research has been done using physical modeling of geoelectric configuration application of Wenner-Sclumberger to model the existence of underground pipe leakage. Modeling is done on a tub made of wood and glass which is filled with sand and clay as medium (host-rock) and the inclusion of leaked steel pipe, the first measurement model is done before the fluid flow into the leaking pipe, obtained the type of pipe resistance pattern 2310 Ωm at a depth of 25 cm from the sand surface with an error iteration of 9.5%. The second model is measured by flowing water into the leaking pipe obtained the pattern of resistance around the type of leakage where the leak is lower is between 6.49 - 55.9 Ωm lies in the horizontal range 12.5 - 20.5 cm and in the vertical range 10 - 45 cm from the sand surface with 25.8% error iteration. The third model is measured by flowing kerosene into leaking pipe can be seen clearly the pattern of distribution of resistance type around the leaky pipe is lower 12 - 71.3 Ωm lies in the horizontal range 11 - 19 cm and in the vertical range of 7-25 cm from the surface sand with 15.7% error iteration
ANALISA TINGKAT PENCEMARAN AIR BAWAH TANAH DENGAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI KECAMATAN TAMPAN KOTA PEKANBARU M, Juandi; Malik, Usman; Leonardo, Melki
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

Show Abstract | Original Source | Check in Google Scholar

Abstract

The research analyzing ground water contamination based on Geo-electrical methods near 2 point,that is in Cipta Karya street (without waste pile) and Srikandi street (with waste pile), KecamatanTampan Riau. Data was processed using Software Progress, with the results of processing in the formof depth, thickness and number of layers and the resistivity value. Has been done the results obtainedshowed that the resistivity value on Cipta Karya road without garbage pile was 57.10-4955.00Ohm.m at depth 0,00-346,00 Meter and on Srikandi street with garbage pile was 68.90-4008.00Ohm.m at depth 0,00-367,00 Meter. Geo-electrical data measurements in Cipta Karya and Srikandithere are 5 layers of soil, that is cover layer, clay loam layer, alluvium layer, sand layer and bedrocklayer. Based on the above resistivity values and depth, all points considered un polluted by leachetbecause the resistivity value is far above 10 Ohm.m (fresh water). Resistivity values indicate that theleachet does not seep into the soil and spread to swamps which are right next to the garbage pile(Srikandi road).
ANALISA TINGKAT RESAPAN TANAH BERDASARKAN PENGUKURAN PERMEABILITAS TANAH (Studi Kasus Kecamatan Tampan Kota Pekanbaru) Malik, Usman; Gunawan, Indra; M, Juandi
Komunikasi Fisika Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Riau

Show Abstract | Original Source | Check in Google Scholar

Abstract

Research was conducted to analyze the soil absorption level based on measurements of soil permeability in District Tampan Pekanbaru City, by taking soil samples for 16 units in four villages namely Simpang Baru, Delima, Tuah Karya, and Sidomulyo Barat which consists of four research blocks. Data inputted into the surfer’s software 11 to be processed so as to produce a contour map of soil absorption level. The results that highest soil absorption of the land in Tuah Karya Village of 108,090.50 m3/year whereas lowest soil absorption of the land in Simpang Baru Village of 91,149.35 m3/year. High soil absorption level caused by open spaces area was large and the amount of rainfall that absorbed into the soil and soil absorption coefficient was high. While the low soil absorption level caused by open spaces area was small and the least rainfall that absorbed into the soil and the soil absorption coefficient is low.
PENENTUAN PENGURANGAN KEBISINGAN OLEH KARPET PADA RUANG TERTUTUP Setiawan, Yugo; M, Juandi; ', Krisman
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

Show Abstract | Original Source | Check in Google Scholar

Abstract

It has been done a test of noise reduction using carpet by variating its thichness and its distance to noise source in a room (glass box). The thichnes of carpet was 0,246 cm, 0,492 cm and 0,738 cm. The noise reduction was measured at three different position of 30 cm, 50 cm and 70 cm from the noise source. The frequency of noise source used was 125, 250, 500, 1000, 2000, 4000 Hz. The measurement was performed at 95 cm to the nosie source by using sound level meter (SLM) SL 4112. The result showed that for a same thichness and variated measurement distance, the value of noise reduction was independent to the frequency. Noise reduction was getting smaller as increasing the thickness of the carpet. It’s value was maximum at the frequency of 2000 Hz and minimum at the frequency of 500 - 1000 Hz. The relation noise reduction to with frequency yielded a certain pattern, which was the larger carpet thichness the higher the nosie reduction would be. The lowest noise reduction was found at frequency of 500 - 1000 Hz, and the maximum noise reduction was accured at 2000 Hz.