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Bambang Sugiarto
Indonesian Institute of Sciences (LIPI)
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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PENGOLAHAN POTENSI SULFUR ALAM SEBAGAI KOMODITI INDUSTRI SIAP JUAL GUNA MEMBUKA PELUANG WIRAUSAHA BAGI WARGA KAWASAN IJEN BONDOWOSO Sugiarto, Bambang; Poedjiastoeti, Sri; Amaria, Amaria; Muchlis, Muchlis
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 1, No 1 (2015)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v1n1.p33-39

Abstract

Kegiatan pengabdian kepada masyarakat (PKM) ini bertujuan untuk melatih keterampilan mengolah sulfur alam sebagai komoditi industri guna membuka wirausaha. Kegiatan dilakukan bagi warga di kawasan Ijen Bondowoso. Strategi yang ditempuh secara berurutan adalah: 1) memberikan wawasan singkat tentang potensi sulfur alam, cara pengolahan, dan kegunaannya; 2) mendemonstrasikan cara pengolahan sulfur alam dalam bentuk bongkahan menjadi sulfur bentuk bubuk berukuran 100 mess dengan kemurnian tinggi sebagai bahan baku pembuatan sabun mandi dan krem; 3) memberikan kesempatan kepada peserta menirukan cara pengolahan sulfur alam sebagaimana telah didemonstrasikan; 4) merekam respon warga terhadap kegiatan; dan 5) tim PKM memberikan pendampingan kepada warga dalam pengolahan sulfur alam. Hasil analisis menunjukkan bahwa; 1) informasi PKM yang diberikan oleh tim berjalan lancar dan antusias peserta cukup tinggi; 2) tim PKM mendemonstrasikan dengan cara yang mudah, peralatan yang digunakan juga mudah diperoleh dalam rumah tangga; 3) peserta yang terbagi dalam tiga kelompok mampu mengolah sulfur alam dengan baik; 4) peserta memberikan respon positif terhadap kegiatan pengabdian; dan 5) terbangun jalinan komunikasi antara peserta dengan tim PKM dalam beberapa waktu setelah kegiatan. Hal ini menunjukkan adanya keinginan yang kuat untuk menindaklanjuti kegatan tersebut. Bahkan beberapa peserta telah bertanya tentang pembuatan sabun, krem dan produk lain berbahan baku serbuk sulfur alam.
IMPERCEPTIBLE KRIPTOGRAFI CITRA BERWARNA MENGGUNAKAN RIVEST SHAMIR ADLEMAN Sari, Christy Atika; Sari, Wellia Shinta; Sugiarto, Bambang
Proceeding SENDI_U 2021: SEMINAR NASIONAL MULTI DISIPLIN ILMU DAN CALL FOR PAPERS
Publisher : Proceeding SENDI_U

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Abstract

Algoritma Rivest Shamir Adleman (RSA) adalah algoritma unggul yang memanfaatkan teknik asimetris dengan 2 buah kunci berbeda yaitu privat dan public. Proses dekripsi RSA dengan memfaktorkan nilai bilangan prima yang begitu besar dan perhitungan operasi matematika yang rumit. Penelitian ini bertujuan untuk melalukan enkripsi dekripsicitra digital berwarna. Pengujian kemiripan antara citra asli dengan citra yang telah terenkripsi menggunakan nilai Mean Square Error (MSE), Peak Signal to Noise Ratio (PSNR) serta pengujian lain seperti Bit Error Rate (BER) dan Entropy. Dari hasil MSE dan PSNR antara citra asli dengan citra hasil enkripsi hasil menunjukkan bahwa untuk nilai MSE lebih dari 0, dan nilai PSNR kurang dari 30dB. Hal ini menunjukkan bahwa kedua gambar antara gambar asli dan gambar setelah terenkripsi memiliki perbedaan yang signifikan.
Kinetic Modeling Study of Laminar Burning Velocity of Gasoline–Ethanol–Methanol Blends at Elevated Temperature and Pressure Auzani, Ahmad Syihan; Wibowo, Cahyo Setyo; Anggarani, Riesta; Nugroho, Yulianto Sulistyo; Sugiarto, Bambang
Makara Journal of Technology Vol. 25, No. 2
Publisher : UI Scholars Hub

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Abstract

Gasoline–ethanol–methanol (GEM) blends have been considered to replace pure gasoline as spark ignition engine fuel. Their physical and chemical properties and performance and emission measurements from real engines have been reported previously. However, a fundamental study that can explain the unique results of GEM compared with those of pure gasoline is lacking. This study aims to compare the laminar burning velocity of GEM blends at different mixtures, equivalence ratios, temperatures, and pressures with that of pure gasoline. A laminar flame propagation model and reaction mechanisms from the literature were were for a numerical simulation. In this study, the chemical components of real gasoline are simplified using a binary surrogate mixture. Results show that the laminar burning velocity of the GEM increased with the increase in temperature, ethanol, and methanol concentration, and it decreased with the increase in pressure. Sensitive reactions to laminar burning velocity are presented through a sensitivity analysis.
Effects Of 0.25 % Mo (Molybdenum) Which Is Contained In The Ductile Cast Iron On Mechanical Properties Of Austempered Ductile Iron (ADI). Nukman, Nukman; Arifin, Bustanul; Sugiarto, Bambang
Makara Journal of Technology Vol. 6, No. 1
Publisher : UI Scholars Hub

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Abstract

The aim of this research is to investigate the effects of 0.25 % Mo (Molybdenum) which is contained in the ductile cast iron on mechanical properties of Austempered Ductile Iron (ADI). The various temperatures and the holding times are used in the heat treatment processes. Using a given 0.25 % Mo in the ductile iron, ADI's alloyed developes a higher ultimate tensile stress value and decreases the elongation if we compare with the as cast (non alloy ductile iron). The higher impact energy value obtained at 9000 C austenization and 375o C austempering temperatures during 60 minutes holding times. The structure changes into ausferrit.
Fuel Injection System for One Cylinder Motor Cycle Engine Sugiarto, Bambang
Makara Journal of Technology Vol. 8, No. 3
Publisher : UI Scholars Hub

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Abstract

Fuel Injection System for One Cylinder Motor Cycle Engine. Fuel injection has been developed for many years. But its common application is limited on car’s engine. With many reason fuel injection systems in motorcycle one cylinder engine has not been widely used yet. Fuel Injection System allows the amount of fuel, injected to be controlled appropriate to engine parameters such as engine speed, amount of air inducted to cylinder, temperature, for each cycle, over the entire engine operating conditions. This fuel injection research is done to find out the Volumetric Efficiency of the intake manifold system, the amount of fuel need to be injected for each engine cycle, and the engine characteristics over variation of test conditions. This research based on Honda CB100 engine, at applied thermodynamic Laboratory of Mechanical Engineering Department, Faculty of Engineering University of Indonesia. Experiment data from this research shows the characteristics of injector duration as functions of engine speed, intake pressure, on one cylinder engine and the results of this research shows a good Volumetric Efficiency of the intake manifold designed using CFD (Computational Fluid Dynamic).
Performance of a Single-Cylinder Four-Stroke Engine with High Concentrations of Gasoline-Ethanol-Methanol (GEM) Hanifuddin, M; Taufiqurrahman, Muhammad Faja; Setyawan, Tri Aji; Anggarani, Riesta; Wibowo, Cahyo Setyo; Sugiarto, Bambang
Automotive Experiences Vol 6 No 2 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.9332

Abstract

Several types of alternative fuels have been developed to replace fossil fuels. Alcohols, such as ethanol and methanol, can be blended with gasoline for spark ignition (SI) engines. High octane number and oxygen content in alcohol can increase combustion efficiency. Therefore, our current research investigates the effect of high concentrations of ethanol and methanol mixed in 90 RON gasoline. The mixture was implemented in a 150 cc single-cylinder four-stroke spark ignition (SI) engine without any modifications. Engine testing was carried out with wide-open throttle (WOT) and different engine speeds from 4000 to 10000 rpm. Torque, power, and Air Fuel Ratio (AFR) were measured during experiments on a chassis dynamometer. Our test results found that the higher the methanol fraction in the mixture, the lower the torque generated. To improve engine performance, further research is needed on modified engines so that optimal conditions can be identified.
Investigating Knocking Potential, Cycle Stability, and Emission Characteristics in Lean Spark Ignition Engine with Gasoline, Ethanol, and Methanol Mokhtar, Mokhtar; Sugiarto, Bambang; Agama, Askar Adika; Kurniawan, Ade; Auzani, Ahmad Syihan
Automotive Experiences Vol 7 No 1 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10607

Abstract

In this paper, an investigation of the use of gasoline-ethanol-methanol on the spark ignition engine is presented, it is not common practice on public roads to use three fuels simultaneously in a spark-ignition engine. Using methanol reduces the ignition delay during combustion, especially at lean air-fuel ratios, and reduces knocking potential in small amounts. The best result ignition delay with value λ= 1,3 obtained in the E5M15 mixture with SoC occurred at 325 CAo, while the value λ= 1,0 also obtained on the same mixture with SoC occurred at 321,5 CAo. The CCV results indicate a more sloping increase in the COV (coefficient of variation) value when using GEM fuel, particularly with the addition of more methanol. The addition of methanol enhances combustion progression and improves the ability of the fuel blend to sustain combustion under lean conditions. Regarding the torque and power values, at λ= 1,0; 1,1; 1,2 are not significantly different, while the value λ= 1,3 is below the other λ values.
PENDAMPINGAN RINTISAN UMKM KERUPUK IKAN DI DESA SELETRENG KECAMATAN KAPONGAN KABUPATEN SITUBONDO Hermawan, Angga Dimas; Hendrawan, Rizqi Ainur; Putri, Sari Rahmawati; Wulandari, Amelia Puspita; Sugiarto, Bambang; Saputra, Krisna Arga
PRAXIS: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 2 (2023): PRAXIS
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47776/praxis.v2i2.756

Abstract

Seletreng Village, Kapongan District, Situbondo Regency has a coastal area geographically. The condition impacts to abundance of marine products, which gives rise to home-based businesses processing fishery products indirectly. The businesses are still home-based start-ups or are small-scale production. The existence of newly started small businesses or micro small and medium enterprises (MSMEs) certainly has several problems that require assistance and strengthening. Newly started MSME generally still does not have legality, the main raw materials are selected fish obtained in certain seasons, and lack of ability in branding and digital marketing aspects. The strengthening MSME is purposed to newly started MSME are able to compete and have quality through 1) Assistance MSME legality in the form of Business Identification Number, SPP-IRT, and Halal Certification, 2) Innovation in substitute raw materials, 3) Assistance and training in product branding and digital marketing. The service carried out in the UNEJ KKN Building Villages (UMD) program has an achievement target: MSME has received assistance, and strengthening can compete and has high quality. Sustainability is also a serious concern so MSME can continue to run in the market, so the service train business actors in operating marketplaces.
Decreasing Of Oxalate Content in Porang Based on Different Sample Shape, Soaking Time, Temperature, and Soaking Solutions Sugiarto, Bambang; Sulistyowati, RR Endang; Dewi, Cicilia Tri Marantika; Hendranto, Rahadian Yogi
Eksergi Vol 20, No 3 (2023)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v20i3.9269

Abstract

Porang, known for its high oxalate content that poses digestive challenges, served as the underlying problem in this study. The research investigated the impact of immersion conditions on oxalate reduction in porang, both in the form of longitudinal slices and diced pieces, using various soaking media, including vinegar, alcohol, and water, with temperature variations. The study identified that the optimal immersion time for achieving maximum oxalate reduction in longitudinal slices was 150 minutes at 50°C in water, resulting in a 0.00495% decrease. In the case of diced porang, the most significant reduction occurred after 120 minutes at 70°C in alcohol, leading to a 0.0045% decrease. These findings shed light on the influence of porang shape and soaking conditions on oxalate release, with diced porang demonstrating faster oxalate reduction, likely due to its smaller surface area. The study offers valuable insights into effectively reducing oxalate levels in porang, contributing to safer consumption.
PENGOLAHAN AIR MATA AIR MENJADI AIR MINUM YANG BERKELANJUTAN DARI MATA AIR POLAMAN KEBUMEN Sugiarto, Bambang; Kusuma, Heri Septya; Suranto, Suranto; Nyamiati, Retno Dwi
Dharma: Jurnal Pengabdian Masyarakat Vol 4, No 2 (2023): November
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/dlppm.v4i2.11255

Abstract

Tujuan dari pengabdian ini adalah untuk memberikan pengetahuan tentang teknologi pengolahan air dari mata air Polaman di Dusun Polaman, Desa Kebakalan, Karanggayam, Kebumen, Jawa Tengah, dengan tujuan meningkatkan kemampuan Mitra UKM dalam mengolah air menjadi produk air kemasan yang siap dikonsumsi, serta meningkatkan nilai jual air tersebut. Mata air Polaman merupakan sumber air utama bagi penduduk di daerah tersebut, tetapi kualitas airnya belum mencapai standar yang aman untuk dikonsumsi. Pengabdian ini melibatkan implementasi teknologi pengolahan air dalam beberapa tahap. Tahap pertama adalah melakukan survei awal untuk memahami kondisi sumber air dan kebutuhan masyarakat setempat. Kemudian, dipilih metode pengolahan air yang sesuai dengan kondisi dan kebutuhan tersebut, yaitu dengan memanfaatkan teknologi Dry Heat Sterilization with Combination Membrane UV. Tim pengabdian juga memberikan pelatihan, pendampingan, dan sosialisasi terkait pengolahan air dengan sistem membran seperti yang telah disebutkan sebelumnya. Dengan penerapan sosialisasi pengolahan air ini, diharapkan kualitas air dari mata air Polaman dapat ditingkatkan sehingga aman untuk dikonsumsi oleh penduduk setempat. Selain itu, diharapkan juga dapat meningkatkan kesadaran masyarakat akan pentingnya pengolahan air yang aman dan penggunaan air dengan baik.
Co-Authors Achmad, Zubaidi Adawiah, Lulu Robiatul Ade Kurniawan Agama, Askar Adika Ahmad Hasyim Amaria Amaria Anggarani, Riesta Ardiyani, Anita Nur Auzani, Ahmad Syihan Bagusputra, Argan Imam Bustanul Arifin Christy Atika Sari Dendi, Dede Dewanata, Rachman Pandu Dewi, Cicilia Tri Marantika Dwi Mulya, Okta ENDANG SUSANTINI Erwin, Iwan Muhammad Fatchurohman, Dedi Fatman, Yenni Frans Setiawan, Frans G.M. Lucki Junursyah, G.M. Lucki Gunawan Gunawan Gunawansyah Gunawansyah, Gunawansyah Hanifuddin, M Hapsari, Nani Sarah Hasibuan, Juana Hizkia Haviani Laluma, Riffa Hendranto, Rahadian Yogi Hendrawan, Rizqi Ainur Hermawan, Angga Dimas Heru Sigit Purwanto Ikhsan, Akhmad Fauzi Ilham Ramadhan, Muhammad Ghiffaari Indra Sakti Indyo Pratomo Iqbal, Fahmi Mohamad Irfandi, Fauzan Isnaini Nur Azizah, Isnaini Ivany Sarief, Ivany Kusuma, Heri Septya Lucki Junursyah, G.M Mariska Aulia Putri, Indah Merdeka Putri, Wulandari Pancadasa Mokhtar, Mokhtar Muchlis Muchlis Ningsih, Ristati Nugraha, Muhammad Fauzi Nur, Salsabila Nuraini Sukmana, Rini Nurfitriani, Nisa Nurholis Majid, Nurholis Nyamiati, Retno Dwi PRABOWO Praromadani, Zulimatul Safa'ah Prasetya, Angga Proklamagita, Angela Merici Herdyana Putri, Sari Rahmawati Ramadhan, Zulqy Fazrie Ramdhani, Muhamad Deris Riffa Haviani Laluma Rirung, Yustin Rizqon Fajar Rokhis, Tria Ainur Rukmana, Ade Samidi Samidi, Samidi Saputra, Krisna Arga Septian Chairulsyah, Defti Setyawan, Tri Aji Sifa Nurpadillah Sri Poedjiastoeti Sulistyowati, RR Endang Suranto Suranto SUYONO Suyono Suyono Syahrizal, Adyanto Taufik Suryantoro, Taufik Taufiqurrahman, Muhammad Faja Tiara, Dinda Raihan Tunjung Wahyu Widayati Tuqa, Eka Tina Nur Ula Ummi Kalsum Wellia Shinta Sari Wibowo, Cahyo Setyo Widayati, Tunjung Wahyu Wiharko, Teguh Wiharso, Tri Arif Wirawan, Kristuaji Andre Wulandari, Amelia Puspita Yuliana, Siska Yulianto Sulistyo Nugroho