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All Journal JURNAL FISIKA SCHOOL EDUCATION JOURNAL PGSD FIP UNIMED Jurnal Fisika FLUX PROSIDING SEMINAR NASIONAL CENDEKIAWAN Science and Technology Indonesia JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Communications in Science and Technology Jurnal Teori dan Aplikasi Fisika Journal of Applied Engineering and Technological Science (JAETS) Jurnal Abdi Masyarakat Indonesia Automotive Experiences Jurnal Penelitian dan Karya Ilmiah Lembaga Penelitian Universitas Trisakti INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal AKAL: Abdimas dan Kearifan Lokal Petro : Jurnal Ilmiah Teknik Perminyakan JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Wahana Fisika : Jurnal Fisika dan Terapannya JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Cahaya Rosyidan
Universitas Trisakti
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Rotating-Magnetic-Field-Assisted Electrodeposition of Copper for Ambulance Medical Equipment Syamsuir, Syamsuir; Susetyo, Ferry Budhi; Soegijono, Bambang; Yudanto, Sigit Dwi; Basori, Basori; Ajiriyanto, Maman Kartaman; Edbert, Daniel; Situmorang, Evi Ulina Margaretha; Nanto, Dwi; Rosyidan, Cahaya
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.9067

Abstract

This study examines the influence of the application of a rotating magnetic field in the electrodeposition of copper (Cu). During the electrodeposition, five constant magnets were rotated (500 and 800 rpm) towards the bottom of the sample. To investigate deposition rate, surface morphology, phase, structure, corrosion resistance, and hardness in deposited Cu using a weighing scale, a scanning electron microscope equipped with energy dispersive spectroscopy (SEM-EDS), X-ray diffraction (XRD), potentiodynamic polarization, and hardness tester respectively. Bacterial activity was also evaluated through this research. Morphological surface observations showed that the increase in the rotational speed of the magnets during the electrodeposition process led to a smooth surface. A perfect Cu phase covers Al alloy with no oxide. The potentiodynamic polarization demonstrated by the increase in the rotating led to a shift to the more positive value of the corrosion potential. Moreover, the corrosion current also decreases with the increase in the rotating speed of the magnets. Less crystallite size promoted forming a higher hardness and inhibition zone of the Cu films.
Nickel Salt Dependency as Catalyst in the Plating Bath on the Film Properties of Cu/Cu-Ni Rosyidan, Cahaya; Kurniawan, Budhy; Soegijono, Bambang; Maulani, Mustamina; Samura, Lisa; Nababan, Frederik Gresia; Putra, Valentinus Galih Vidia; Susetyo, Ferry Budhi
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.529-538

Abstract

Metal plating frequently employs nickel (Ni) and copper (Cu) as anodes. Cu/ Cu-Ni film formed has many advantages, such as better corrosion resistance and high hardness characteristics. This study aims to assess the properties of Cu/Cu-Ni film, such as phase, surface morphology, crystallographic orientation, hardness, corrosion analysis, and contact angle, which were fabricated using electrodeposition with various Ni salt additions (0.3, 0.5 and 0.7 M). In addition, the cathode current efficiency (CCE) and deposition rate of the Cu/Cu-Ni electrodeposition were also investigated. An increase in Ni salt in the plating bath could enhance the pH, promoting higher CCE and depleting hydrogen evolution at the cathode, leading to the presenting Ni phase in the alloy. The higher concentration of Ni salt in the solution could also enhance the deposition rate due to a shift to a pH value, which affects the roughening of the surface morphology, promoting a higher contact angle. All crystal structures generated by Cu/Cu-Ni electrodeposition were FCC, with the preferred orientation of the (111) plane. Crystallite size and lattice strain depend on the deposition rate. Less crystallite size and lattice strain affect the film’s hardness and corrosion resistance. Moreover, the third bath had the resulting Cu-Ni layer with the best hardness and corrosion rate of around 136 HV and 0.081 mmpy.
Carbon Micron-size Content Dependency in Epoxy/Carbon Composite Coated onto SPCC Plate for Automotive Bodies Protection Anggrainy, Rani; Susetyo, Ferry Budhi; Lubi, Ahmad; Yudanto, Sigit Dwi; Rosyidan, Cahaya; Soegijono, Bambang; Ajiriyanto, Maman Kartaman; Kurniawan, Ova; Nanto, Dwi
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.989-998

Abstract

Conventional epoxy coating for surface metal corrosion protection reported many unsolved technical problems. Adding filler in the epoxy could enhance the promising properties of the composite coating. Our work describes in detail the synthesizing and characterizing epoxy/carbon composite coating. Epoxy was mixed with thinner high gloss (HG) and hardener and stirred using a stirrer apparatus. After blending, various carbons were added (1 wt. %, 3 wt. %, and 5 wt. %) and then appropriately stirred. The different mixture composite was coated onto the steel plate cold rolled coiled (SPCC) plate using high-volume low-pressure (HVLP) in two passes. Various characterizations were performed, including crystallographic orientation, Infra-Red (IR)-spectra, surface morphology, thickness, hydrophobicity, hardness, and corrosion using X-ray diffraction (XRD), Fourier transform infrared (FTIR), Scanning electron microscopy (SEM), portable dry film coating thickness (DFT), digital camera, Vickers microhardness tester, and Potentiostat, respectively. More carbon micron-sized content led to elevate the peak intensity, surface bumpiness, and hydrophobicity. The uppermost external bumpiness and hydrophobicity values are 23.51 µm and 101◦. Hardness depends on carbon content and more carbon leads to an increase in the hardness of the composited coating. The highest average Vickers hardness value is 28.24 HV. The coating thickness influenced the corrosion rate, more coating thickness promoted lesser corrosion rate. The highest coating thickness (60.8 µm) promoted a corrosion rate of around 5.65×10−4 mmpy.
Pelatihan Statistik untuk Penilaian Berbagai Aset Properti Termasuk Migas bagi Karyawan KJPP di DKI Jakarta Prima, Andry; Rosyidan, Cahaya; Satiyawira, Bayu; Samsol, Samsol; Koesmawardani, Wildan Tri; Renanda, Raka Ilham
Jurnal Abdi Masyarakat Indonesia Vol 4 No 4 (2024): JAMSI - Juli 2024
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.1246

Abstract

Pelatihan statistik bagi karyawan KJPP di Jakarta Selatan bertujuan untuk meningkatkan pemahaman dan keterampilan dalam penggunaan statistik, khususnya dalam penilaian properti migas. Pelatihan ini diikuti oleh 30 personel yang diukur keterampilan statistiknya melalui kuesioner sebelum dan sesudah pelatihan. Metode pelatihan berupa kuliah dan pendampingan dengan materi pelatihan mencakup teori dasar hingga aplikasi lanjutan statistik yang disajikan melalui presentasi dan studi kasus. Setelah dilakukan pendampingan, hasil analisis data menunjukkan peningkatan signifikan dalam pemahaman dan keterampilan statistik peserta setelah pelatihan. Peserta yang awalnya tidak memahami konsep statistik dasar kini mampu menerapkannya dalam pekerjaan sehari-hari, terutama dalam penilaian properti migas. Pembahasan juga mengidentifikasi berbagai aspek pelatihan yang dianggap paling bermanfaat oleh peserta, seperti pendekatan praktis dan studi kasus relevan. Saran untuk perbaikan di masa mendatang mencakup perpanjangan durasi pelatihan dan pengulangan berkala untuk mempertahankan keterampilan yang telah diperoleh. Kesimpulan menunjukkan bahwa pelatihan ini sangat efektif dan lebih dari 90% peserta menyatakan bahwa pelatihan ini bermanfaat dalam meningkatkan kompetensi mereka. Pelatihan semacam ini direkomendasikan untuk dilaksanakan secara berkala guna terus meningkatkan kompetensi personel KJPP dalam penilaian properti, terutama dalam sektor migas.
PERHITUNGAN TRAJEKTORI PADA SUMUR J-01 LAPANGAN JS MENGGUNAKAN COMPASS Ezenwune, Jose Andreas; Ginting, Mulia; Rosyidan, Cahaya
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Volume 10, Nomor 1, Januari 2025
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pdk.v10i1.22181

Abstract

Pemboran berarah adalah suatu teknik mengarahkan lubang bor mengikuti garis lintasan yang telah direncanakan untuk mencapai zona target yang ditentukan.Pada saat dilakukannya pemboran banyak terjadi penyimpangan atau perbedaan pada saat perhitungan secara manual dan menggunakan software. Oleh karena itu diperlukan adanya evaluasi lintasan pemboran agar mengetahui besarnya penyimpangan yang terjadi. Metode yang dipilih dalam perhitungan lintasan pemboran berarah ini ialah metode minimum of curvature. Sumur J-01 merupakan sumur pemboran berarah yang berada di wilayah Kawasan hutan lindung. Area Lapangan memiliki formasi yang berada dibawah kawasan hutan lindung sehingga sangat sulit memperoleh perizinan pembebasan lahan. Sesuai dalam aturan undang-undang migas bahwa area tersebut tidak dapat dilakukan pengeboran secara vertikal, maka dari itu dilakukan directional drilling. Penelitian ini bertujuan untuk mengevaluasi rencana lintasan pemboran apakah sudah optimal serta meminimalisir potensi terjadinya tabrakan antar sumur. Pada penelitian ini menggunakan dua metode yaitu metode perhitungan manual dan metode minimum of curvature dengan menggunakan compass.
PENGURANGAN KADAR MG2+ DAN MN2+ DALAM AIRMELALUI PEMANFAATAN ARANG AKTIF DAN BENTONITE Maulani, Mustamina; Nugrahanti, Asri; Satiyawira, Bayu; Rosyidan, Cahaya; Samura, Lisa; Arkaan, Muhammad Dzaki; Michael, David; Nuryana, Suherman Dwi
Jurnal AKAL: Abdimas dan Kearifan Lokal Vol. 6 No. 1 (2025): Jurnal AKAL : Abdimas dan Kearifan Lokal
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/21065

Abstract

Cikarawang Village, Dramaga, Bogor is a village with a large potential for water resources. However, the water in this village has high levels of Mg2+ and Mn2+. High levels of Mg2+ and Mn2+ can cause eye and nose irritation, as well as influenza symptoms. To reduce the levels of Mg2+ and Mn2+ in water, this study used the adsorption method using activated carbon and bentonite. The results of the study showed that the levels of Mg2+ and Mn2+ in water can be significantly reduced using the adsorption method. In sample 1, the level of Mg2+ decreased from 14.64% to 11.64% after adsorption for 30 minutes. In sample 2, the level of Mg2+ dropped to 0% after adsorption for 30 minutes. In sample 3, the level of Mg2+ decreased from 9.60% to 5.76% after adsorption for 30 minutes. In general, the longer the contact time between the sample and the adsorbent, the greater the decrease in the levels of Mg2+ and Mn2+. However, for sample 2, the level of Mg2+ dropped to 0% after adsorption for 30 minutes. This indicates that sample 2 has a very high level of Mg2+ that can be adsorbed perfectly by bentonite in a short time. This study concluded that the adsorption method using activated carbon and bentonite is an effective method for reducing the levels of Mg2+ and Mn2+ in water.
The Application of Non-Thermal Plasma and Electrocoagulation as Purifier of Liquid Waste in Home Industries Samura, Lisa; Maulani, Mustamina; Rosyidan, Cahaya; Putra, Valentinus Galih Vidia
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 6 No. 1 (2022): May Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v6i1.992

Abstract

This study aims to examine the decomposition method of liquid waste in the home industry, especially in the tofu industry, by using non-thermal plasma and electrocoagulant methods that are environmentally friendly and with low energy. In this study, the plasma method, electro-coagulant method, and a combination of both (electro-coagulant followed by plasma method and plasma followed by electro-coagulant method) were used to decompose liquid waste in the tofu industry. The results showed that non-thermal plasma followed by the electrocoagulation method was the most effective in reducing the T.D.S. value of 1983 ppm (the minimum value of the total control T.D.S. was around 2702 ppm), the minimum value of electrical conductivity (E.C.) was around 3967 (μs/cm), and also obtained a value of 3967 (μs/cm). pH 7.0. Based on the research results, non-thermal plasma combined with the electrocoagulant method can be applied to more optimally decompose liquid waste, especially in the tofu industry. The combination method of plasma and electrocoagulation to decompose the tofu industrial wastewater, which is environmentally friendly, is the novelty of this research
Effect of Zinc Addition in Copper to Structure, Hardness, Corrosion, and Antibacterial Activity Lisa Samura; Mustamina Maulani; Cahaya Rosyidan; Kartika Fajarwati Hartono; Suryo Prakoso; Evi Ulina Margareta Situmorang; Daniel Edbert; Bambang Soegijono; Muhammad Yunan Hasbi; Ferry Budhi Susetyo
Journal of Applied Engineering and Technological Science (JAETS) Vol. 6 No. 1 (2024): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v6i1.6098

Abstract

Brass (CuZn) is widely used today due to better mechanical, thermal, and chemical properties. The present research fabricated CuZn alloy by adding various Zn (6, 9, and 12 wt.%) to the Cu using gravity casting. Casts CuZn alloy by adding various Zn to the Cu to investigate optimum composition were resulting highest inhibited of bacterial activity. In addition, the structure, hardness, and electrochemical behavior of the alloy were also investigated using XRD, Vickers hardness, and potentiostat equipment. XRD confirmed that CuZn alloy has an alpha phase, and a FCC crystal structure. The rise of the Zn content in the alloy led to an increase in crystallite size, a decrease in the hardness and a shift to a more negative OCP potential at 1200 s measurement. Enhancing the Zn content to 9 wt.% in the alloy lead to decrease the corrosion rate. Moreover, 24-hour post-contact observation found that the sample places removed remained clear of bacteria. The Cu6Zn sample successfully inhibited the growth of Escherichia coli in the 3rd hour, while Staphylococcus aureus was 100 % reduced in the 7th hour. The Cu6Zn sample could be used as an alternative material for medical equipment in ambulances.
PENGARUH PENAMBAHAN CANGKANG KERANG SEBAGAI ADITIF PENYEMENAN Samura, Lisa; Rosyidan, Cahaya; Prapansya, Onnie Ridaliani; Maulani, Mustamina; Pauhesti; Hidayat, Hifzhan Rizki; Pearlo, Kevin Lukas
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Volume 10, Nomor 2, Juli 2025
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pdk.v10i2.18971

Abstract

Keberhasilan proses pemboran sumur minyak tergantung pada kualitas dan campuran semen pemboran. Perencanaan komposisi pembuatan bubur semen yaitu air, bahan tambahan, atau campuran tambahan lainnya perlu dianalisa untuk menghasilkan sifat-sifat bubur semen yang diinginkan. Tujuan penelitian adalah untuk mengetahui komposisi dan sifat fisik bubur semen dengan penambahan zat adiktif cangkang kerang pada tiga variasi suhu waktu pengentalan, kuat tekan, dan rheologi bubur semen. Metodologi penelitian, desain penelitian kuantitatif menguji pengaruh penambahan aditif terhadap berbagai sifat fisik bubur semen. Pelaksanaan sesuai dengan protokol penelitian yang telah disusun. Analisis dengan mengukur waktu penebalan, kuat tekan, dan reologi bubur semen menggunakan peralatan vicat, dengan memperhatikan kondisi tekanan dan suhu standar API 10A. Hasil penelitian, pengujian semen kelas G dengan aditif kerang pada kadar air 44% menunjukkan hasil penurunan kuat tekan dengan setiap penambahan konsentrasi aditif. Penambahan aditif clamshell pada kadar air 44% dengan tiga variasi temperatur yaitu 80°F, 140°F, dan 200°F waktu perendaman selama 24 jam dan 8 jam. Suhu memiliki pengaruh yang besar terhadap uji waktu pengentalan sampel semen dan waktu perendaman akan berpengaruh lebih besar terhadap penambahan aditif kerang. Hasil uji waktu pengentalan semen kelas G dengan penambahan aditif cangkang kerang pada substitusi cangkang kerang 0%, 15%, 20%, 25% dan 50%, menunjukkan bahwa semakin banyak substitusi cangkang kerang maka semakin cepat waktu pengeringan pada pembacaan vicat dan hasil yang sama Ditemukan juga pada uji kuat tekan ekosemen pada substitusi cangkang kerang 0%, 15%, 20%, 25% dan 50% menunjukkan penurunan nilai kuat tekan dengan semakin banyak substitusi shell ditambahkan.
Rotating speed and magnetic pole dependency assisted on copper deposition onto aluminum alloy substrate for bacterial eradication application Basori, Basori; Ruliyanta; Ajiriyanto, Maman Kartaman; Kriswarini, Rosika; Hardiyanti, Heri; Rosyidan, Cahaya; Yudanto, Sigit Dwi; Situmorang, Evi Ulina Margaretha; Edbert, Daniel; Nanto, Dwi; Susetyo, Ferry Budhi
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1547

Abstract

Copper (Cu) is widely used in many sectors, such as drinking water piping, heat exchangers, and medical equipment. The present research conducted an electrodeposition of Cu over an aluminum (Al) alloy substrate under the influence of various magnetic poles and rotating speeds. In the present study, a number of investigations, including deposition rate, current efficiency, coating thickness, surface morphology and phase, crystallographic orientation, antibacterial activity, electrochemical behavior, and hardness test were conducted. Increasing the rotation speed promoted to enhanced deposition rate and current efficiency for both magnetic poles influence. An increase in the deposition rate from 12.83 to 13.67 µm/h led to the increasing thickness, a change in surface morphology near the spheroidal, becoming a faceted structure. Presenting and rising in the rotation of a magnetic field led to a reduced surface roughness and crystallite size of Cu film for both magnetic poles influence. The Cu film made without spinning magnetic had a characteristic of highest bacterial inhibition zone around 2.50 ±0.56 cm². The CuRN50 sample had the lowest corrosion rate at around 0.055 mmpy, while the CuRS100 sample had the highest hardness value at approximately 80.72 HV for having the lowest crystallite size. Cu coated onto Al alloy could enhance its properties, such as being antimicrobial, being resistant against corrosion and having the hardness value.
Co-Authors - Sunardi - Sunardi Abdul Hamid Agus Jamaludin Alfiandi Sembiring Aliya Mayendra Ammar Ammar Andreas Junianto Andreas Junianto Andry Prima Anggrainy, Rani Arinda Riswati Arkaan, Muhammad Dzaki Aryanto, Reza Asri Nugrahanti Asri Nugrahanti, Asri Aulia Alfath Auliya, Hilyah Bambang Soegijono Bambang Soegijono Basori Basori Basori Bayu Satiyawira Bayu Satyawira Bayu Satyawira Bayu Satyawira, Bayu Budhy Kurniawan Bujasuandi Maulana Cahyaningratri Prima Riyandhani Dalimunthe, Yusraida Khairani Daniel Edbert Daniel Edbert, Daniel Dio Rekayandra Djunaedi Agus Wibowo Dwi Nanto, Dwi Dwi Nuryana, Suherman DWI YULIANTI Etty Mutiara Evi Ulina Margareta Situmorang Evi Ulina Margaretha Situmorang Ezenwune, Jose Andreas Ferry Budhi Susetyo Ferry Budhi Susetyo Gabriella Jasmine Galih Vidia Putra, Valentinus Gemintang Atlantika Urbiyanto hanz seca rifansyah cipta maheza Harin Widiyatni Havid Pramadika Havidh Pramadika Heri Hardiyanti Hidayat, Hifdzan Rizki Hidayat, Hifzhan Rizki Hilyah Auliya Imam Setiaji Ronoatmojo Irwan . Irwan . Irwan Irwan Jasmine, Gabriella kartika fajarwati hartono Kashah, Muhammad Refli Koesmawardani, Wildan Tri Kurniawan, Ova Livia Ailen Dharma Lubi, Ahmad Lukas Pearlo, Kevin M.T Fathaddin Maman Djumantara Maman Djumantara, Maman Maman Kartaman Ajiriyanto Mansor, Muhd Ridzuan Maulani, Mustamina Michael, David Mixsindo Korra Herdyanti Mohamad, Juliany Ningsih Mohammad Apriniyadi Muh Taufiq Fathaddin Muhammad Burhannudinnur Muhammad Burhannudinnur Muhammad Burhannudinnur Muhammad Yunan Hasbi Mulia Ginting, Mulia Mustamina Maulani Mustamina Maulani Nababan, Frederik Gresia Nadhira Andini Nugraheni, Rosmalia Dita Onnie Ridaliani Onnie Ridaliani, Onnie Pantjanita Novi Hartami Pauhesti Pauhesti Pauhesti Pauhesti Pauhesti Pauhesti, Pauhesti Pearlo, Kevin Lukas Pramadika, Havid Prapansya, Onnie Ridaliani Puri Wijanti Putra, Raka Handika Putra, Valentinus Galih Vidia Raihan Ramadhan Raisha Marsha Raka Handika Putra Ratnayu Sitaresmi Renanda, Raka Ilham Ririn Yulianti Riswati, Arinda Risyad Baihaqi Rizki Ananda Parulian Rosika Kriswarini Rosmalia Dita Nugraheni Rosmalia Dita Nugraheni Ruliyanta Samsol Samura, Lisa Shabrina Sri Riswati Sigit Rahmawan Soekardy, Mentari Gracia Suherman Dwi Nuryana Suryo Prakoso, Suryo Syamsuir, Syamsuir Tina Martina Tina Martina, Tina Totong Irwan Tri Yulianto Urbiyanto, Gemintang Atlantika Valentinus Galih Vidia Putra Valentinus Galih Vidia Putra Widia Yanti, Widia Wijayono, Andrian wiwik dahani, wiwik Yarra Sutadiwiria Yudanto, Sigit Dwi zakiah darajat