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All Journal TEFLIN Journal: A publication on the teaching and learning of English Bulletin of Chemical Reaction Engineering & Catalysis Journal of Mechanical Engineering Science and Technology Jurnal Karinov Jurnal Komunitas: Jurnal Pengabidian Kepada Masyarakat Jurnal Pengabdian, Pendidikan dan Teknologi Bulletin of Chemical Reaction Engineering & Catalysis
Sukarni Sukarni
Universitas Negeri Malang
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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IMPROVING TEACHERS’ PROFESSIONALISM THROUGH MATERIALS DEVELOPMENT, INFORMATION TECHNOLOGY AND CLASSROOM ACTION RESEARCH Emalia Iragiliati Sukarni
TEFLIN Journal: A publication on the teaching and learning of English Vol 20, No 2 (2009)
Publisher : TEFLIN

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract: One of the ways to promote the International standard schools’ teacher professionalism was to carry out weekly workshops on material development based on curriculum pathways of the National Plus High Schools using the Information Technology (IT) facilities. This research developed teacher-made materials for the X grade. The materials were graded: narrative, recount, news item, descriptive, ranging from 250 to 500 words. The materials were then tried out in a Classroom Action Research (CAR) at eight classes of X grades. Based on previous research, teachers’ preferences are made in line with the students’ choice of issues to be discussed. It aimed at knowing the feasibility of the materials, the students’ preference of exercises and students’ level of competencies of each class related to the understanding of the units. Results of the questionnaires showed that most of the materials were understood and liked by the students. Thus, professionalism was seen during the process of the CAR.
Rancang Bangun TTG I-Bite (IoT Basic Automatic Smart Feeder) untuk Meningkatkan Kapasitas Produksi Tambak Ikan Lele Sukarni Sukarni; Malik Abdurrachman; Ardianto Prasetiyo; Avita Ayu Permanasari; Poppy Puspitasari; Heru Suryanto
Jurnal KARINOV Vol 4, No 1 (2021): Januari
Publisher : Institute for Research and Community Service (LP2M), Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um045v4i1p%p

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Pakan merupakan komponen terbesar dalam usaha budidaya ikan konsumsi. Pemberian pakan yang kurang baik berdampak pada meningkatnya Feed Conversion Ratio (FCR), menurunnya kualitas air, dan kematian ikan. Berdasarkan permasalahan yang dihadapi oleh mitra dan perkembangan teknologi saat ini, artikel hasil pengabdian masyarakat ini mengusulkan sistem Teknologi Tepat Guna I-Bite yang menggunakan IoT sehingga mempermudah dalam pengaplikasiannya. User dapat mengatur banyak pakan yang akan diberikan, durasi pemberian pakan, jarak area tebar, jadwal pemberian pakan sesuai dengan kebutuhan, serta siklus data pemberian pakan melalui email. Tujuan pengabdian masyarakat ini adalah untuk mengatasi kesulitan dalam pemberian jumlah pakan yang tepat pada area yang merata dengan jadwal yang telah ditentukan serta memberikan sosialisasi terkait cara pengoprasian, perakitan, dan pemasangan instrumen. Metode pelaksanaan pengabdian ini adalah dengan sosialisasi serta pengujian peforma instrumen. Hasil pengujian menunjukan bahwa instrumen dapat menebar pakan sejauh 14m dengan debit 4kg/menit pada sudut 110’. Berdasarkan hasil pengujian tersebut dapat disimpulkan bahwa I-Bite dapat menjadi solusi mitra dalam hal pemberian pakan dengan menggunakan instrumen yang diajukan dapat menjadi solusi terhadap permasalahan yang dialami mitra terutama mempermudah dalam pemberian pakan. Kata kunci—Teknologi, I-Bite, Internet of Things (IoT), pakan ikan, efisiensi, produksi  AbstractFeed is the biggest component in the consumption of fish farming. Poor feeding results in increased Feed Conversion Ratio (FCR), decreased water quality, and fish mortality. Based on the problems faced by partners and current technological developments, this article on the results of community service proposes an Appropriate Technology I-Bite system that uses IoT to make it easier to apply. Users can set the amount of feed to be given, the duration of feeding, the distance of the stocking area, the feeding schedule according to the needs, and the data cycle of feeding via email. The purpose of this community service is to overcome difficulties in providing the right amount of feed in an even area with a predetermined schedule and provide socialization related to how to operate, assemble and install instruments. The method of implementing this service is by socializing and testing the performance of the instrument. The test results show that the instrument can spread the feed as far as 14m with a discharge of 4kg / minute at an angle of 110 '. From the results of these tests, it can be concluded that I-Bite can be a partner solution in terms of feeding using the proposed instruments which can be a solution to the problems experienced by partners, especially making it easier to feed.Keywords—Technology, I-Bite, Internet of Things (IoT), fish feed, efficiency, production
The Effect of Chlorophyll Concentration from Papaya Leaves on the Performance of Dye Sensitized Solar Cell Dede Rizali; Heru Suryanto; Sukarni Sukarni
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 3, No 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (934.282 KB) | DOI: 10.17977/um016v3i22019p059

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Dye-Sensitized Solar Cell (DSSC) is the third generation solar cell that has sandwich structure consisted of organic dye material and other components such as titanium dioxide (TiO2) semiconductor, electrolyte, and substrates (counter electrode and working electrode). The dye in the device was made from green plant chlorophyll such as papaya. This research aimed to find the influence of dye concentration from papaya leaves chlorophyll on the performance of DSCC. The discussion covered the output power (Pout), Fill Factor (FF), and efficiency (ɳ). The method in this research was explorative experimental with independent variables such as direct and indirect sunlight. The dependent variables were output power (Pout), Fill Factor (FF), and efficiency (ɳ) from the DSSC. The procedures in this research consisted of substrates preparation, TiO2 paste production, dye solution preparation, electrolyte preparation, counter electrode preparation, and DSSC assembly. The tests on chlorophyll concentration were conducted using spectrophotometry method while the DSSC performance test used 1,000 W/cm2 halogen lamp. The results showed that 100% chlorophyll concentration resulted in 3.1295 mg/m3 chlorophyll content type a. The best DSSC performance was obtained by the DSSC sample that had 100% chlorophyll concentration and 1.1294 mg/m3 chlorophyll content. The direct light of DSSC achieved Pout of 0.9557 mW, FF of 0.07282, and efficiency of 1.499137%. The DSSC with indirect light obtained Pout of 0.00455 mW, FF of 0.01535, and efficiency of 0.049863%.
Effect of MnFe2O4 Nanoparticles to Reduce CO and HC Levels on Vehicle Exhaust Gas Emissions Poppy Puspitasari; Sukarni Sukarni; Amir Hamzah
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 2, No 1 (2018)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3387.408 KB) | DOI: 10.17977/um016v2i12018p027

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The air pollution particle emitted from transportation in Indonesia Bay 2015 consist of 70.50% CO; 18.34% HC; 8.89% NOx; 0.88% SOx; 1.33%. These gases are very harmful to humans. To reduce the toxic gas effect, special treatment is needed, one of them is by applying catalyst on exhaust system. MnFe2O4 has the potential to bind the CO and HC elements contained in the exhaust gas. This study aims to investigate the effect of MnFe2O4 addition on catalityc converter towards CO gas and HC emissions of motor vehicles. Therefore, the percentage of exhaust reduction with and without applying MnFe2O4 on varied engine rotation using fuel with RON of 88, 90, 92 and 98 can be revealed. The results describe that the highest reduction precentage of CO content by applying MnFe2O4 nanoparticles as a catalyst for premium, pertalite and pertamax fuel are 34.1% (effective at low and high rotation); 31.1% (effective at all rotations); and 3.9% (effective at low rotation). On the other hand, the highest reduction percentage of HC content on premium, pertalite, pertamax and pertamax turbo fuel are 79.3% (effective in high rotation); 71.4% (effective at high rotation); 53,6% (effective in high rotation); and 2.1% (only effective at low rotation).
Effect of Magnetic Field on Diesel Engine Power Fuelled with Jatropha-Diesel Oil Sukarni Sukarni; Partono Partono; Deni Krisdianto; Retno Wulandari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 1 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.498 KB) | DOI: 10.17977/um016v1i12017p044

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Jatropha oil has characteristics very close to the diesel fuel, so it has good prospects as a substitute or as a mixture of diesel fuel. Previous research showed that jatropha oil usage in diesel engines caused power to decrease. It was probably owing to the higher viscosity of the Jatropha oil compared to that of diesel oil. Installing the magnetic field in the fuel line of a diesel engine fueled with jatropha-diesel oil is expected to reduce the viscosity of jatropha-diesel oil mixture, hence improve the combustion reaction process. This research aims to know the influence of the magnetic field strength in the fuel lines to the power of diesel engines fueled with a mixture of jatropha-diesel oil. The composition of Jatropha oil-diesel was 20% jatropha oil and 80% diesel oil. Magnetic field variations were 0.122, 0.245 and 0.368 Tesla. The results showed that the higher the strength of the magnetic field was, the higher the average diesel engine’s power would be.
Thermogravimetric and Kinetic Analysis of Cassava Starch Based Bioplastic Nanang Eko Wahyuningtyas; Heru Suryanto; Eddy Rudianto; Sukarni Sukarni; Poppy Puspitasari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 2 (2017)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (696.095 KB) | DOI: 10.17977/um016v1i22017p069

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Cassava starch based bioplasticfor packaging application has great potency because of the various starch-producing plants in Indonesia.Bioplasticcan contribute to reduce the dependence on fossil fuels andpetroleumthat can solve the environmentalproblem.Thepurpose of this research is to find out the thermal decomposition and the activation energy of cassava starch based bioplastic. The methods weresynthesis bioplastic with cassava starch as main component and glycerol as plasticizer. The thermogravimetry analysis was conducted to obtain the decomposition process mechanism of bioplastic and the heating valueof bioplasticwas measured  using theadiabatic bomb calorimetric.  Data analysis was conducted using  a fitting model approach with an acikalin method to determine the activation energy. The result of thethermogravimetricanalysis showed thatbioplasticisgraduallydecomposedto the moisture, volatilematter, fixed carbon, andash in four stages mechanism. Totally decomposition of bioplastic was 530°C, then all of bioplastic was become the ash. The activation energy in the early and primary thermal decomposition stages are 1.27 kJ/moland 22.62 kJ/mol, respectively and heating valueof bioplastic is 15.16 MJ/kg.
The Potential of Waste Cooking Oil B20 Biodiesel Fuel with Lemon Essential Oil Bioadditive: Physicochemical Properties, Molecular Bonding, and Fuel Consumption Avita Ayu Permanasari; Muhammad Najib Mauludi; Sukarni Sukarni; Poppy Puspitasari; Siti Nur Azella Zaine; Wahyunengsih Wahyunengsih
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.10493.555-564

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This study is motivated by the depletion of fossil fuels in nature, which is inversely proportional to the higher level of fuel oil consumption, so the need for alternative fuels, namely biodiesel. Biodiesel can be made using waste cooking oil because of its abundant quantity, low price, and not being reused. One of the efforts to achieve energy conservation and improve fuel quality is using bioadditives. A lemon essential oil can be used as a bio-additive because it is easily soluble in fuel and its oxygen-rich content can reduce the rate of fuel consumption. The process in this study is to produce biodiesel with waste cooking oil (WCO) using a transesterification process. Biodiesel samples containing the bioadditive lemon essential oil on B20 biodiesel with varying volume fraction (0%; 0.1%; 0.15%; 0.2%). In general, this research can be done in three steps. The first step is the characterization of the compound composition (GCMS) and functional group (FTIR) of diesel fuel, biodiesel, and lemon essential oil bioadditive. The second step is the characterization of the physicochemical properties (density, viscosity, flash point, calorific value) of B20 biodiesel with various concentrations of lemon essential oil bioadditive, then compared with SNI 7182:2015. The third step is determining the rate of fuel consumption in diesel engines. The results show that Biodiesel B20 with a volume fraction of 2% lemon essential oil bioadditive has a high ability to reduce the rate of fuel consumption. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
PELATIHAN PEMELIHARAAN IKAN KOI UNTUK PENGEMBANGAN WISATA IKAN DI KAWASAN BEDENGAN, SELOREJO, MALANG Heru Suryanto; Bili Darnanto Susilo; Aminnudin Aminnudin; Sukarni Sukarni; Suprayitno Suprayitno; Marsono Marsono; Uun Yanuhar
Jurnal Pengabdian Pendidikan dan Teknologi (JP2T) Vol 2, No 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um080v2i12021p14-22

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Wana wisata Bedengan berada di Dusun Selokerto, Desa Selorejo, Kecamatan Dau, Kabupaten Malang. Wisata ini telah dibuka sejak tahun 2007 pada lahan seluas 13,7 hektar yang terletak ±12 km dari Universitas Negeri Malang. Tempat ini memiliki udara khas dataran tinggi, ditumbuhi oleh pepohonan pinus, tanah yang masih subur dan terdapat aliran sungai dengan airnya yang sangat jernih sehingga tempat ini sangat cocok sebagai wisata edukasi tentang ekosistem. Mitra desa ingin mengembangkan wisata edukasi ikan di tempat ini, sehingga sangat diperlukan pengetahuan, keterampilan dan teknik budidaya ikan. Untuk itu dilakukan beberapa tahapan kegiatan, yaitu: 1. Survey lokasi wana wisata bedengan; 2. Pengkondisian lokasi yang pas untuk dijadikan kolam ikan dan pengambilan sampel air; 3. Pembelian dan pengkondisan ikan koi; 4. Pemindahan ikan koi ke kolam; 4. Pelatihan pemeliharaan ikan yang melibatkan 11 anggota pengelola wisata bedengan serta mengundang narasumber ahli. 5. Pemberian bantuan pakan serta praktek pemeliharaan ikan koi. Setelah pelaksaan rangkaian kegiatan tersebut, anggota pengelola wisata bedengan sudah dapat memahami dan mampu melakukan proses pemeliharaan ikan koi dengan baik. Para pengunjung juga memberikan respon positif dengan adanya wisata edukasi ikan ini.
Pengenalan Teknologi Augmented Reality sebagai Media Pembelajaran Anak Usia Dini di RA Babul Ulum Desa Pulau Panggung Kecamatan Abung Tinggi Kabupaten Lampung Utara Poppy Puspitasari; Avita Ayu Permanasari; Sukarni Sukarni
Jurnal Komunitas : Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: Juli 2021
Publisher : Institut Ilmu Sosial dan Manajemen Stiami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.419 KB) | DOI: 10.31334/jks.v4i1.1626

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In this millennial era, there are many school institutions that use modern technology in carrying out learning, to support and make learning more interesting. One example of modern technology that can be used is Augmented Reality technology. Unfortunately the use of Augmented Reality technology is not as easy as imagined, because there are obstacles such as the lack of teacher education about various learning media that support the learning process and also especially on the location factor of RA Babul Ulum which is in rural areas so that it has not been touched by learning media that smells technology. To support learning using the AR system at RA Babul Ulum, Pulau Panggung village, North Lampung, a community grant team from the State University of Malang funded by PNBP carried out a community service program in the form of counseling and providing teaching aids in the form of an LCD projector and also several Augmented Reality (AR) cards.). With the methods of observation, lectures, demonstrations, discussions and practice with direct trials resulted in: teachers RA Babul Ulum understand and master the application of Augmented Reality technology; RA Babul Ulum received new teaching materials in the form of Augmented Reality cards; The use of this learning media causes students to understand better and not get bored easily when the learning process takes place.
Investigate the Potential Renewable Energy of Microalgae Spirulina sp Using Proximate Analyzer, SEM-EDX, and Thermogravimetry Yahya Zakaria; Sukarni Sukarni; Poppy Puspitasari; Nandang Mufti; Samsudin Anis; Anwar Johari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 6, No 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v6i22022p066

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Microalgae Spirulina sp which has been cultivated by the Brackishwater Aquaculture Development Center, Situbondo Indonesia were tested for their potential energy performance using proximate analyzer, SEM-EDX, and thermogravimetry. The proximate analyzer showed volatile matter (VM), fixed carbon (FC), moisture, ash content (AC), total sulfur of microalgae Spirulina sp 68.15, 12.57, 11.22, 8.06, and 0.67 (wt%, ar), respectively, and the gross calorific value (GCV) is 4971 kcal/kg (dry basis). SEM-EDX test showed the morphology and chemical content of Spirulina sp. The content of microalgae Spirulina sp is dominated by carbon (C) and oxygen (O), then followed by chlorine (Cl), sodium (Na), potassium (K), sulfur (S), magnesium (Mg), and phosphorus (P). Thermogravimetry pyrolysis test of microalgae Spirulina sp resulted thermogravimetry (TG) analysis and derivative thermogravimetry (DTG) analysis curve, which is divided into three different steps. The moisture of microalga Spirulina sp was vaporized at the first step, started at 27°C, and finished at 173°C with a decomposed mass of about 13.81% of the total initial mass. The second step began at the end of vaporize moisture at about 173°C and ended at around 618 °C. The gasification process occurred in volatile matter content and resulted mass loss of about 57.9% of Spirulina sp total mass. The last step showed the process of gasification of residual substances, started at the end of the volatile matter step, 618°C, and stopped at 995°C with a decomposed mass of 24.6% from total mass.
Co-Authors Aminnudin, Aminnudin Amir Hamzah Anwar Johari Ardianto Prasetiyo Avita Ayu Permanasari Bili Darnanto Susilo Dede Rizali Deni Krisdianto Eddy Rudianto Heru Suryanto Malik Abdurrachman Marsono Marsono Muhammad Najib Mauludi Nanang Eko Wahyuningtyas Nandang Mufti Partono Partono Retno Wulandari Rr. Poppy Puspitasari Samsudin Anis Siti Nur Azella Zaine Suprayitno Suprayitno Wahyunengsih Wahyunengsih Yahya Zakaria Yanuhar, Uun