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All Journal Jurnal Ilmu Lingkungan Jurnal Ilmu Lingkungan Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam SEMIRATA 2015 Journal of Aquatropica Asia Journal of Aceh Physics Society JOURNAL ONLINE OF PHYSICS ORBITA: Jurnal Pendidikan dan Ilmu Fisika WAJAH HUKUM Jurnal Ilmu Fisika INSIST (International Series on Interdisciplinary Research) APTEK Unri Conference Series: Community Engagement Mejuajua Science, Technology, and Communication Journal Jembatan Hukum: Kajian Ilmu Hukum, Sosial dan Administrasi Negara Wahana Fisika : Jurnal Fisika dan Terapannya Tepak Sirih : Jurnal Pengabdian Kepada Masyarakat Madani Jurnal Pendidikan dan Kewarganegara Indonesia (jupenkei) Jurnal Bakti UPPR

Juandi Juandi

Universitas Riau

Author-ID : 2979896

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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PENYELIDIKAN POLA SEBARAN LIMBAH KARET BAWAH PERMUKAAN TANAH DENGAN METODE GEOLISTRIK Juandi M Juandi M
Jurnal Ilmu Lingkungan Vol 4, No 1 (2010): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.4.1.p.36-45

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.

EFEK VARIASI MASSA DAN ANALISA EFISIENSI BIOMASSA LIMBAH KAYU AKASIA DALAM PENGOLAHAN OPAK SINGKONG MENGGUNAKANKOMPOR BIOMASSA Juandi Juandi; Ray Afriando; Usman Malik
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 2 (2018): JOP (Journal Online of Physics) Vol 3 No 2
Publisher : Prodi Fisika FST UNJA

Has conducted research on “Variation Of Mass Effect and Analysis Of The Efficiency Biomass Accacia Timber Waste In Processing Cassavas Opak Using Biomass Stove” using the experimental method. The biomass stoves is using biomass energy from accacia timber waste as an energy source or fuel with a variety of mass 1200 grams, 1000 grams, and 800 grams. The observations were carried out for 60 minutes with intervals of 10 minutes each observation. The research results show that at mass 1000 grams obtained value temperature highest of 4630C. The average rate of heat energy is missing from the third variation mass 800 grams, 1000 grams, and 1200 grams receive is 514.439 Joule/s, and the average rate of energy heat elapsed of 29176.323 Joule/s with the water levels were lost during steaming of 6.046 %, and the average a mass of type the end of 60.287 kg/m3. The efficiency obtained with the values respectively of 99.542 %, 99.270 %, and 99.316 %.

PREDIKSI KEDALAMAN DAN ANALISA POTENSI AIR BAWAH TANAH: STUDI KASUS KECAMATAN SENAPELAN KOTA PEKANBARU Rahmi Saputri; Usman Malik; Juandi Juandi
JOURNAL ONLINE OF PHYSICS Vol. 4 No. 1 (2018): JOP (Journal Online of Physics) Vol 4 No 1
Publisher : Prodi Fisika FST UNJA

Penelitian tentang prediksi kedalaman dan analisa potensi air bawah tanah di Kecamatan Senapelan Kota Pekanbaru telah dilakukan dengan menggunakan metode beda hingga. Tujuan penelitian ini adalah untuk prediksi kedalaman dan menganalisa potensi air bawah tanah tahun 2018 sampai dengan tahun 2025 di Kecamatan Senapelan Kota Pekanbaru dengan menggunakan program komputer aplikasi MATLAB R2015a. Hasil pengolahan data dimasukkan ke dalam program komputer, sehingga dapat dibuat model garfik kontur dan grafik mesh yang menggambar pola sebaran kedalaman air bawah tanah berdasar model permukaan Kecamatan Senapelan Kota Pekanbaru. Air bawah tanah diprediksi pada kedalaman 16 meter sampai 32 meter untuk tahun 2018 sampai dengan tahun 2025. Hasil prediksi kedalaman air bawah tanah dipengaruhi oleh beberapa faktor yaitu Resepan (R), pengambilan air oleh penduduk (Ed), pengambilan air oleh industri (Ei), pengambilan air oleh fasilitas umum (Ef), pengambilan air oleh pelayanan jasa (Ep) dan pengambilan air oleh peternakan (Et).

PENGELOLAAN AIR BAWAH TANAH DENGAN INTEGRASI FAKTOR LINGKUNGAN: STUDI KASUS KECAMATAN SENAPELAN KOTA PEKANBARU Ruzi Andriani; Juandi Juandi; Usman Malik; Muhammad Hamdi
JOURNAL ONLINE OF PHYSICS Vol. 4 No. 1 (2018): JOP (Journal Online of Physics) Vol 4 No 1
Publisher : Prodi Fisika FST UNJA

Penelitian tentang sistem informasi dan pengelolaan air bawah tanah di Kecamatan Senapelan Kota Pekanbaru telah dilakukan dengan menggunakan Metode simulasi MATLAB. Data kedalaman air bawah tanah di ambil dari Kecamatan Senapelan Kota Pekanbaru. Tujuan penelitian ini adalah untuk menganalisa sistem informasi pengelolaan air bawah tanah dengan integrasi faktor lingkungan tahun 2017 dan 2018 di Kecamatan Senapelan Kota Pekanbaru dengan menggunakan program komputer aplikasi MATLAB GUI. Data yang didapatkan diolah menggunakan Microsoft Excel. Hasil pengelolaan data dimasukan kedalam program komputer menggunakan GUI MATLAB yang telah dibuat dan berhasil memvisualisasikan dalam bentuk grafik. Program tersebut terdiri dari program menu dan program utama dengan fitur display Grapihical User Interface (GUI). Grafik yang dihasilkan ditampilkan kedalam grafik 3-D. Hasil penelitian kedalaman air bawah tanah pada tahun 2017 dan 2018 dipengaruhi oleh beberapa faktor yaitu Resapan R = 908.249 m3/tahun, pengambilan air oleh penduduk Ed = 7.107.847,2 m3/tahun, pengambilan air oleh industri Ei = 2.390,209315 m3/tahun, pengambilan air oleh fasilitas umum Ef = 215.719,6626 m3/tahun, pengambilan air oleh perdagangan Ep = 610.705.759,8 m3/tahun dan pengambilan air oleh perternakan Et= 41.880,05655 m3/tahun. Nilai pengambilan air bawah tanah disebabkan oleh faktor lingkungan dengan kontribusi terkecil dari faktor pengambilan air oleh pertanian/perkebunan (Et), kontribusi terbesar dari faktor pengambilan air oleh perdagangan (Ep), selebihnya karena faktor alam. Penelitian pengelolaan pengambilan air bawah tanah tahun 2017 dan 2018 menjelaskan adanya pengaruh faktor-faktor lingkungan yang terintegrasi terhadap perubahan kedalaman air bawah tanah di Kecamatan Senapelan Kota Pekanbaru.

KARAKTERISTIK SPEKTRUM KEBISINGAN KENDARAAN SAAT BERHENTI Dewi Muliana; Juandi '; Sugianto '
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 Characteristics of Noise Spectrum for Vechicle at Rest condition at Jalan Soekarno Hatta, Pekanbaru, Indonesia. The research methodology uses Digital Voice Recorder experimentally and a GoldWave Software computes by a recorder. The measurement of noiseis detected at rest vehicle in four position having densed noise. First position has high peak and amplitude at Jalan Tuanku Tambusai 1. The other positions have low peak and amplitude at Jalan Soekarno Hatta 1, Jalan Tuanku Tambusai 2 and Jalan Soekarno Hatta 2 respectively. Noise signal is then evaluated at frequency 20 Hz - 20,000 Hz for all position. The intensityat position I has -85.0584 dB until -29.4942 dB, position II has -47.7043 dB until -84.5914dB , position III has -74.7860 dB until -46.7704 dB and position IVhas -74.7860 dB until - 46.3035 dB. The average noise spectrum intensity of vehicle against frequency y=Ax+B, where y is avarege spectrum intensity and x is frequency. The details is at position I (y=- 0.002x-35.93), at position II (y=-0.001x-52.01), at position III (y=-0.000x-54.81) and at position IV (y=-0.001x-50.24). In conclution, the spectrum of vehicle stop condition has low intensity.

DESTILASI AIR LAUT MENGGUNAKAN PEMANAS MATAHARI DENGAN REFLEKTOR CERMIN CEKUNG Fanrico Sanjaya Tambunan; Muhammad Edisar; Juandi M
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 in distilling seawater using solar heater with and without concave mirror reflector. The concave reflector mirror has been made with its diameter of 2.2 meters, height of 0.3 meters and focus of 1 meter. The reflector was placed on the ground and was directly illuminated by the sunlight. The collector which contained seawater was exactly placed on the focus of the reflektor. During the heating, thetemperature was measured every hour from 08.00 to 16.00 WIB. The observation was done for seven days. The results showed that maximum temperature of seawater using the reflector was about 100o C and 140oC at the focus and the best daily destilling volumewas 688 ml. The results distilling without reflector showed maximum temperature of seawater was about 64oC and the best daily destilling volume was 180 ml. The laboratory testing of the samples before and after distilling showed that there was significantly improvement of water quality, especially in salinity which decreased to be zero after distilling.

PENENTUAN TINGKAT KEBISINGAN SEPEDA MOTOR KNALPOT STANDAR DAN MODIFIKASI Nasib '; Erwin '; Juandi M
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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The noise level produced by standard and modified motorcycles exhaust has been investigated. In this research, there were three types of motorcycles used namely Honda, Suzuki and Yamaha. Noise levels that generated by those motorcycles were measured using Sound Level Meter (SLM) SL 4112. In order to eliminate noise from other sources 5 different angles (0o, 45o, 90o, 135o, and 180o) were used, then the measurement of noise from the motorcycles exhaust was done 2m from the exhaust. The results of the measurement showed that sound intensity generated by standard motorcycle exhaust at angle of 90o produced maximum value of 78,17 dB, 79,62 dB and 97,55 dB for Honda, Suzuki and Yamaha respectively. By modifiying the exhaust, the noise level produced of Honda, Suzuki and Yamaha were 97,48 dB, 97,62 dB and 97,55 dB respectively. The significant increase of noise level for modified exhaust with muffler was caused by several factors such as muffler and diameter of exhaust. The range value of noise level for the standard exhaust was measured at the angle of 90oand the engine variation of 5000 rpm was 78,66 dB while for the modified exhaust produced an average value of 97,55 dB with the same position and engine variation.

PENENTUAN PENGURANGAN KEBISINGAN OLEH KARPET PADA RUANG TERTUTUP Yugo Setiawan; Juandi M; 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

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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.

PENENTUAN TINGKAT KEBISINGAN PADA PABRIK KELAPA SAWIT PT TASMA PUJA KECAMATAN KAMPAR TIMUR Jasmareni Sri Kurniati Baalijas; Juandi '; Sugianto '
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 noise levels generated by the palm oil processing machine are demonstrated. Noise level measurement was done at different positions in the engine room area (location 1) and the office area (location 2) by using a Sound Level Meter (SLM) SL 4112. The results showed that the intensity of the noise caused by the engine plant in location 1produce the maximum value of 93.68 dB on Wednesday and 91.99 dB minimum value on Monday, while the second location has maximum value is 71.72 dB on Saturday and the minimum value is 68,63 dB on Monday for duration one week. This difference is due to the accumulation of noise levels with increasing time and background activities that can affect the value of the measurement. Measurements were carried out during one week on the average value of 93.68 dB at location 1 and 71.72 dB at location 2.

ESTIMASI PERMEABILITAS RESERVOIR DARI DATA LOG MENGGUNAKAN JARINGAN SYARAF TIRUAN PADA FORMASI MENGGALA PT CHEVRON PACIFIC INDONESIA Liana Zamri; Juandi M; Muhammad Edisar
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 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.

Co-Authors Abdullah, Hewa Yaseen Adrianto Ahmad Afriyunita, Dini Alifia Putri Yasmin Amiruddin, Erwin ANDRINI, ROZI Anisa, Hijrah Septia Annisa Alqorina Antonius Surbakti Arifudin Arifudin arifudin Asih Apri Manelsa Awaludin Rakhmat Ayu Permatasari Budi Azwar Budijono, Budijono Citra Siti Fatimah Julianti Citra, Theodora Defrianto Defrianto Devi Arvianti Dewi Kurnia Dewi Kurnia Dewi Muliana Dodi Irwan Siregar Edisar Edisar Ekwarso , Hendro Emrinaldi , Tengku Erman Taer Erwin ' Erwin Amiruddin Fanrico Sanjaya Tambunan Febrianti, Ade Fia Firdahlia Firmansyah, Restu Gimin Gimin Gimin HAMDALAH, AHMAD Hamdi, Muhammad Hendro Ekwarso Herman Herman Indah Tamara Sitorus Indra Gunawan Ira Triswiyana Irvan Rahmat Ismawan Ismawan Jasmareni Sri Kurniati Baalijas KEMAL KEMAL Krisman Krisman ' Krisman Krisman Kurniawan, Joko Lestari, Fitra Liana Zamri Listia Damayana M .Edizar ' M Ridwan Haekal Mandasari Sibarani , Oktavia Martin ' Melki Leonardo Melyna Handayani Mhd Edisar Mohamad Safrin Muh Sarkowi Muhammad Edisar Muhammad Hamdi Muhammad Hamdi Muhammmad Hamdi Muhd Fachrewa Almarsya Mutia Febri Irdayanti Nasib ' Nur Islami Pangesti, Winda Peri Ridwan Nurhedi Pertiwi, Meryati Purwoko, Agus Putra Ramadani Rahmad Sujud Hidayat Rahmalia, Anisa Rahmi Dewi Rahmi Saputri Rahmiati Rahmiati Rahmondia Nanda Setiadi Rakhmawati Farma Rany, Novita Ray Afriando Riad Syech Riduan Alvinsen Sirait Rigia Givanny Pritamara Rika Taslim Risanto, Joko Riska Fitriani Riski Febriani Rizki Fadilah Rofeah ' Ruzi Andriani Saberina Hasibuan Saktioto Saktioto Salomo Salomo Sari Agriona Setiawati Setiawati Sherly Mutiara Silaban, Intan Silvia Noviana Sinuraya, Salomo Sitinjak, Tumbur Marudut Tua Sugianto ' Sulistyo Rini, Ari Sutan Saladin Syah, Erzan Syahril Syahril Syamsulduha ' Syamsulduha Syamsulduha Taufik Arianto Tengku Emrinaldi Tiana Rahmadani Usman Malik Usman Malik Usman Usman Yohanes Dwi Saputra, Yohanes Dwi Yugo Setiawan Yupapin, Preecha Yusri Yusri Zainudin Hasan Zulfa Zulfa Zulfa

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