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All Journal Jurnal Pembangunan Pendidikan: Fondasi dan Aplikasi Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Teknik Kimia USU NUMERICAL (Jurnal Matematika dan Pendidikan Matematika) BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) Kelola: Journal of Islamic Education Management JUARA : Jurnal Olahraga Musamus Journal of Physical Education and Sport (MJPES) Jurnal Review Pendidikan dan Pengajaran (JRPP) Health Information : Jurnal Penelitian Jurnal Abdimas Madani dan Lestari (JAMALI) Indonesian Journal of Education and Mathematical Science Jurnal Manajemen Pelayanan Hotel Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Education and Teaching Learning JiTEKH (Jurnal Ilmiah Teknologi Harapan) Jurnal Manajemen dan Organisasi Review (MANOR) Jurnal Ilmiah Wahana Pendidikan MANAJERIAL: Jurnal Inovasi Manajemen dan Supervisi Pendidikan Jurnal Pengabdian Masyarakat (ABDIRA) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Indonesian Journal of Research and Educational Review (IJRER) JUrnal Riset Ilmu Pendidikan Al-MIKRAJ: Jurnal studi Islam dan Humaniora Jurnal Teknik Kimia USU JYRS: Journal of Youth Research and Studies Jurnal Offshore: Oil, Production Facilities, and Renewable Energy OMEGA: Jurnal Keilmuan Pendidikan Matematika Jurnal Ilmiah Swara MaNajemen (Swara Mahasiswa Manajemen) Ininnawa: Jurnal Pengabdian Masyarakat Kohesi: Jurnal Sains dan Teknologi Jurnal Riset Kajian Teknologi dan Lingkungan Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK) Jurnal Pemikiran dan Pengembangan Pembelajaran JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Pengabdiaan Masyarakat Larisma MAFEBIS: Jurnal Manajemen, Akuntansi dan Bisnis

Irvan Irvan

Department of Chemical Engineering, University of North Sumatra, Medan

Author-ID : 288698

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PENGARUH MEDIA AUDIO VISUAL TERHADAP TENDANGAN YOKO GERI KEKOMI Irvan, Irvan; G Simanjuntak, Victor; supriatna, Eka
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 8, No 10 (2019): Oktober 2019
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (857.838 KB)

AbstractThe purpose of this research was to determine the effect of audio-visual media to yoko geri kekomi in SMK Negeri 1 Sambas west Borneo Province. The metode used was exsperimental. Exsperimental from using one group pretest-posttest design. Intake of this study using purposive sampling technique with a number of 24 people. Data analysis was performed by t-test analysis. From the test result are known yoko geri kekomi kick thitung> ttabel (10,09>2,06) can be concluded that the hypothesis is accepted, which means there is influence. There is a change in the test kicks yoko geri kekomi increase of 14,58%. This is based on test result yoko geri kekomi kick after treated (treatment), where the mean possttest langer than the mean pretest (19,48>17).Keywords : Media audio Visual, Yoko Geri Kekomi Kick In KarateÂ

PENGARUH PROMOSI PENJUALAN DAN CITRA MEREK TERHADAP KEPUTUSAN PEMBELIAN SEPEDA MOTOR HONDA PT. NUSANTARA SURYA SAKTI MAJENE Nadir, Muh; Dj, Arifhan Ady; Irvan, Irvan
MANOR: JURNAL Manajemen dan Organisasi Review Vol 3 No 1 (2021): MANOR: Jurnal Manajemen dan Organisasi Review
Publisher : MANOR: JURNAL Manajemen dan Organisasi Review

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Penelitian ini bertujuan untuk mengetahui pengaruh promosi penjualan dan citra merek berja baik secara parsial maupun simultan terhadap karyawan pada PT Nusanatara Surya Sakti Majene. Penelitian ini merupakan penelitian dengan menggunakan jumlah responden sebanyak 50 responden. Instrumen dalam penelitian ini telah melewati tahap uji validitas dan uji reliabilitas. Pengumpulan data menggunakan kuesioner, sedangkan analisis data dilakukan dengan menggunakan analisis regresi berganda. Hasil penelitian pada taraf signifikansi 5% menunjukkan bahwa, promosi penjualan perusahaan PT Nusantara Surya Sakti Majene memiliki pengaruh terhadap keputusan pembelian konsumen. Ini dapat dilihat dari t hitung 3,891 > t table 2,011 maka hipotesis diterima, artinya promosi penjualan berpengaruh terhadap keputusan pembelian konsumen pada PT Nusantara Surya Sakti Majene. Citra merek di perusahaan PT Nusantara Surya Sakti Majene memiliki pengaruh terhadap keputusan pembelian konsumen. Ini dapat dilihat dari t hitung 2,128 > t table 2,011 maka hipotesis ditermia, artinya citra merek berpengaruh signifikan terhadap keputusan pembelian konsumen di perusahaan PT Nusantara Surya Sakti Majene. F hitung (13,727) > F table (3.20) hipotesis diterima artinya promosi penjualan dan citra merek secara serentak berpengaruh terhadap keputusan pemeblian konsumen PT Nusantara Surya Sakti Majene. Kata Kunci: Promosi Penjualan, Citra Merek Dan Keputusan Pembelian

PENGOMPOSAN SEKAM PADI MENGGUNAKAN SLURRY DARI FERMENTASI LIMBAH CAIR PABRIK KELAPA SAWIT Irvan, Bambang Trisakti, Cut Novaliani Hasbi, Elwina Widiarti
Jurnal Teknik Kimia USU Vol 2, No 4 (2013)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jutek.v2i4.4567

Rice husk is material waste that is usually just burned. However, this practice is causing air pollution problems. One effort to help overcome the problem of agricultural waste is recycling technique with an emphasis on the process of composting. Many efforts can be made to speed the composting process. The treatment was performed by the addition of slurry at the beginning of composting process with the addition of as much as 1, 2,and 3 liters and the addition of slurry during composting process by adding 0,5;1; and 1,5liters of slurry every 3 days once. At each treatment was added 1 kg of fine compost. The condition which almost meets quality compost by SNI 19-7030-2004 and most precocious and decomposesis the compost with the addition of as much as 1, 5 liters every 3 days where the temperature is 32,8 oC obtained, the water level is 35,1,99 %, the ratio of C / N is 7.58 and pH is 9,59. This thing indicates that the slurry from biogas fermentor can accelerate the maturity of compost making so that it is more easily broken down or decomposed.

PERANCANGAN AWAL PABRIK BIOHIDROGEN DARI LIMBAH CAIR PABRIK KELAPA SAWIT DENGAN FERMENTASI ANAEROBIK PADA KONDISI TERMOFILIK Bambang Trisakti; Irvan; Hari Tiarasti; Irma Suraya
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Indonesia has a lot of natural resources which is deficient to fulfill the energy demand of consumers, particularly fuel. Therefore, the government keeps on promoting the search for alternative energy. One of these is hydrogen. Hydrogen is an environmental friendly product that does not produce carbon emissions. In the formation of hydrogen we can use carbohydrate-rich waste as a raw material and by using fermentation process. However, it is still limited research only. So this encourage us to design biohydrogen plant from palm oil mill effluent (POME) with the conditions of thermophilic anaerobic fermentation in order to accomplish the needs of consumers and contribute in developing clean technologies. For the production capacity of 495.1694 tons / year, the total investment required to build a factory of biohydrogen in Indonesia is Rp. 507,190,573,523, - with a total production cost of Rp. 354,636,600,139, -. Parameter feasibility of the production capacity of 495.1694 tons / year is the total product sales of Rp 174,261,989.701, - and net income 180,030,185,327, -. Profit Margin (PM) 41.9% Break Even Point (BEP) 45.24%, Return on Investment (ROI) 35.5%, Pay Out Time (POT) 2.82 years, Return of Network (RON) 59.16%, Internal Rate of Return (IRR) 53.52 %.

PEMBUATAN BIOGAS DARI BERBAGAI LIMBAH CAIR PABRIK KELAPA SAWIT Irvan; Irma Suraya; Hari Tiarasti; Bambang Trisakti; Rosdanelli Hasibuan; Yoshimasa Tomiuchi
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

The purpose of this research is to determine the effect of Fe level as trace metal on the quantity of biogas produced from the fermentation of palm oil mill effluent (POME). Materials used in this study included POME from one of the palm oil factories belong to PTPN IV, hydrochloric acid, sodium bicarbonate, and trace metal. Observed variables were volume of biogas, concentration of Fe in fermentor, rate of degradation total solid (TS) and volatile solid (VS), and CO2at Hydraulic Retention Time (HRT) 6 days. Before HRT of 6 days reached, initial trace metal composition of Fe added were 25.2 mg / L, Co 0.42 mg / L and Ni 0.49 mg/ L. After that, composition of trace metal were consisted only Co and Ni. The results of this study showed that Fe as a trace metal did not affect the production or quantity of biogas and concentration Fe on level > 330 mg/L decreased the value of CH4, total solid (TS) and volatil solid (VS). Thus, Fe in the trace metal is no longer required if there is a high content of Fe in POME because it can be toxic for microorganism in the fermentation of biogas.

PENGOLAHAN LANJUT LIMBAH CAIR KELAPA SAWIT SECARA AEROBIK MENGGUNAKAN EFFECTIVE MICROORGANISM GUNA MENGURANGI NILAI TSS Irvan; Bambang Trisakti; Michael Vincent; Yohannes Tandean
Jurnal Teknik Kimia USU Vol. 1 No. 2 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Palm oil mill effluent (POME) production in Indonesia is estimated around 28.7 million ton/year. Generally, POME treatment is done conventionally by using facultative ponds. Aside from the vast usage of land and operational cost, this system also emits greenhouse gases. Eventhough, POME is a potential raw resource in producing biogas. Previous researches were done with anaerobic process to produce biogas, but the waste produced still haven’t met the standard quality control requirements. The total suspended solid (TSS) contained in the waste produced from the anaerobic process is still around 400 mg/L, which is the reason why aerobic process is still necessary to drop the number of TSS contained by using effective microorganism. From the result, a 10 day HRT aerobic process can reduce the number of TSS to around 200 mg/L.

RANCANGAN ALAT PEMBUATAN BIOETANOL DARI BAHAN BAKU KULIT DURIAN Irvan; Bambang Trisakti; Luri Adriani; Reviana Revitasari
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

In this research, the bioethanol production unit using durian peel as raw material was designed with capacity process of 100 liters per cycle in batch process. The main equipments were designed fermenter and distillation unit. Fermenter tank was designed with 43 cm of diameter and 86 cm of height which was equipped with two manual paddle impeller of 30 cm in diameter. The other of main equipments, distillation tank was made of stainless steel with 48 cm of diameter and 54 cm of height, which was equipped with heater to heat the liquid of fermentation process and cooling tank to cool vaporised bioethanol. The time required for one cycle of fermentation with batch process was 7 days and 7 hours. While the time required for one cycle of bioethanol production with batch process was 8 days and 4 hours. The feasibility of bioethanol production unit in which consists of fermenter tank and distillation tank under condition process of 7 days and yeast concentration of 6% and distillation temperature of 80oC was tested. The results obtained were 8,98% of bioethanol concentration during fermentation and 74,96% of bioethanol concentration during distillation.

PENGOMPOSAN SEKAM PADI MENGGUNAKAN SLURRY DARI FERMENTASI LIMBAH CAIR PABRIK KELAPA SAWIT Irvan; Bambang Trisakti; Cut Novaliani Hasbi; Elwina Widiarti
Jurnal Teknik Kimia USU Vol. 2 No. 4 (2013): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

PERANCANGAN PROTOTIPE BIOREAKTOR UNTUK PENGOLAHAN LANJUT LIMBAH CAIR PABRIK KELAPA SAWIT (LCPKS) SECARA AEROBIK Bambang Trisakti; Jhon Almer S. Pasaribu; Tri Afrianty; T. Husaini; Irvan
Jurnal Teknik Kimia USU Vol. 2 No. 4 (2013): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

LCPKS further processing is usually done by using activated sludge system is implemented in an open pond.This system requires a large enough dissolved oxygen so that if the system would lead to poor aeration then the HRT will be great. In addition to the spread of foul smell due to the system being used is open. This study aims to produce a prototype bioreactor that can be used to replace the above processing system. Bioreactor tank made of transparent plastic tube that comes by baffles and stirrer are made of stainless steel. In addition, the bioreactor is also equipped with a motor stirrer, aeration systems, and deodorizing unit. The resulting prototype has 11.078 cm high and 21.4 cm diameter, 9.2-liter operating volume, and fluid and baffle height is 24.5 cm. Bioreactor equipped with two stirrer blade that is horizontal turbine disc type at 7.13 cm of the tank bottom and paddle 4-rowing at 12.84 cm above the first blade. Bioreactor prototype has passed the leakage testand if the air flowing in at a constant velocity 0.5 m/s then the value of gasholdup (ε) is 0.02. Used this prototype for further processing LCPKS cause COD value of waste fell from 4,482 mg/l to 3,096 mg/l for 30 days long processed.

PENGARUH PENAMBAHAN BERBAGAI AKTIVATOR DALAM PROSES PENGOMPOSAN SEKAM PADI (Oryza sativa) Irvan; Permata Mhardela; Bambang Trisakti
Jurnal Teknik Kimia USU Vol. 3 No. 2 (2014): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Composting process of rice husk (Oryza sativa) by adding various activators have been carried out in LPPM Training Center, University of Sumatera Utara. The purpose of this study was to compare the effect of variation of slurry and bacteria (yeast and EM4) on rice husk composting results. The parameters observed were changes in temperature, water content, C/N ratio, and pH. At the end of the composting results showed that the addition of slurry, yeast and EM4 can lower the temperature and C / N ratio, and with the addition of yeast and 2 liters of slurry can speed up the process of decomposition of compost.

Co-Authors Abdurrahman, Muhammad Faiz Achmad Fariz Agus Sutriawan Agus, Anjar Ahmad Yamin Al Fath, Muhammad Thoriq Alamsyah, Vandria Amelia Sari Br.S . Pane, Lola amin, harahap Amir, Atmam Amrulloh, Moch. Bachrurrosyady Andryawan, Andryawan Awal, Asri Azis, Zainal Baehaqi Bambang Trisakti Bambang Trisakti Cut Novaliani Hasbi Dian Anggraini Dj, Arifhan Ady Edi Syahputra EKA RAHAYU Eka Supriatna Ellis Mardiana Panggabean Elwina Widiarti Fachruddin, Aisyah Fachry Abda El Rahman Farida Hanum fatimah Fatimah Fona, Zahra Hadiansyah, Muhammad Hamzah, Alimin Hari Tiarasti Hasyim, Muhammad Qasash Heru Setiawan, Heru Setiawan Hiroyuki Daimon Hudain, Muh. Adnan Ieke Wulan Ayu Indra Surya, Indra Irma Suraya Irwan Irwan Iskandar Iskandar Jahrir, Andi Sahrul Jannah, Anistazkia Miftahul Jhon Almer S. Pasaribu Johan Wahyudi, Johan Juniansyah, Muhammad Fadhillah Kamaruddin Kamaruddin Khoiruddin Matondang Koichi Fujie Koro, Suriana Kpalet, Petrus Lubis, Ulfa Annisa Luri Adriani Maisharoh, Maisharoh Marah Doly Nasution Marbun, Daniel S Michael Vincent Mochamad Syamsiro Muh Wildan Muhammad Akbar Syafruddin Muhammad Faisal Muhammad Hendra S Ginting Muhammad Ivan Miftahul Aziz Muhammad Noviansyah Aridito Muhammad Sigit Cahyono Muhammadong Munir Yusuf, Munir Muslihuddin, Rahmat Nadir, Muh Natsir, Rodja Abdul Nency Extise Putri Nur Indah Atifah Anwar Nuralam Syamsuddin Nurussyariah, Nurussyariah Nurwijayanti Pamungkas, Sugeng Adi Pasaribu, Martua Permata Mhardela Puspita, Fitriyah Putri Balqis, Putri R. Rusli Raihan Dimas Muharam Ramadani, Zein Rasyid, Nashfin Nazli Reviana Revitasari Rico Nur Ilham Rifa Turaina Risna Mira Bella Saragih Riyono, Eko Rizky, Muhammad Rafly Robi Rendra Tribuana Rosdanelli Hasibuan Rudi Hermawan Sabhara, Robby Sidabutar, Rivaldi Sinabang, Juwita Lestari Sinaga, Mersi Suriani Siregar, Wandani Siswadi Siswadi Sitepu, Lusti Angelica Sitepu, Rafael Aginta Steven , Evan Sufitriyono, Sufitriyono Suparni, Sarmin Suwardi Suwardi Syafri Hariansah Syafutra, Wahyu Pramudya T. Husaini Takwim, Mardi Tambun, Rondang Tanjung, Dian Fitria Taslim Taslim Taslim Tri Afrianty Umar Umar Victor G Simanjuntak Wardan, Khusnul Yohannes Tandean Yoichi Atsuta Yoshimasa Tomiuchi Zahedi . Zaky, O K M

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