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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) Jurnal Eksakta Kebumian Wahana Fisika : Jurnal Fisika dan Terapannya JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Scientific Contributions Oil and Gas
Cahaya Rosyidan
Universitas Trisakti
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SOSIALISASI FLUIDA PEMBORAN: PENGANTAR KOMPREHENSIF UNTUK LABORAN DAN GURU SMK MIGAS CIBINONG, JAWA BARAT Samura, Lisa; Burhannudinnur, Muhammad; Prakoso, Suryo; Rosyidan, Cahaya; Maulani, Mustamina; Satiyawira, Bayu; Djumantara, Maman; Pearlo, Kevin Lukas; Soekardy, Mentari Gracia; Hidayat, Hifdzan Rizki
Jurnal Abdi Masyarakat Indonesia (JAMIN) Vol 6 No 1 (2024): JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jamin.v6i1.16630

Abstract

The world of oil cannot be separated from drilling operations in extracting hydrocarbons from below the earth's surface. Drilling mud or drilling fluid is essential to the drilling process. Cibinong Oil and Gas Vocational School is a vocational school that has two study programs, namely, Oil and Gas Drilling Engineering and Oil and Gas Production Engineering. The laboratory assistants at the Oil and Gas Vocational School have limitations in explaining in detail about drilling fluids. Therefore, activity is necessary to increase insight and knowledge of drilling fluids, especially in supporting practical activities. The method used in this activity is the dissemination of knowledge about drilling mud accompanied by the practice of making a simple drilling mud mixture. Making drilling mud is carried out by comparing KCl polymer mud and polyamine as a shale inhibitor. This comparison is seen from the results of the physical properties of the mud produced, namely mud weight, funnel viscosity, plastic viscosity, yield point, 10-second gel strength, 10-minute gel strength, filtration rate, mud cake, and pH (acidity level). With this introductory activity, knowledge about drilling fluids for laboratory assistants and chemistry teachers as participants in PkM activities has increased. This increase in knowledge can benefit students who will continue their education at the undergraduate level in earth sciences at universities.
PERBANDINGAN SIFAT FISIK DAN THEOLOGI LUMPUR PENGEBORAN MENGGUNAKAN SISTEM BENTONITE PREHIDRAT PADA BERBAGAI TEMPERATUR Maulani, Mustamina; Nugrahanti, Asri; Satyawira, Bayu; Ginting, Mulia; Dwi Nuryana, Suherman; Samura, Lisa; Rosyidan, Cahaya; Jasmine, Gabriella; Lukas Pearlo, Kevin
Jurnal Abdi Masyarakat Indonesia (JAMIN) Vol 5 No 2 (2023): JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jamin.v5i2.16747

Abstract

Lumpur pengeboran merupakan komponen penting dalam pengeboran. Dalam pengaplikasiannya lumpur yang digunakan adalah freshwater dan sea water. Untuk pengeboran lepas pantai cenderung menggunakan sea water mud yang berbahan dasar Attapulgite. Namun karena mahal dan sulit didapatkan maka digunakan Bentonite yang diprehidrasi terlebih dahulu untuk meningkatkan daya pengentalannya. Pengujian sifat fisik dan rheologi lumpur antara freshwater dan sea water dilakukan dengan beberapa tahapan dan berbagai temperatur, hasil analisis menunjukkan prehidrasi bentonite lebih efektif digunakan pada freshwater yang terlihat melalui sifat fisiknya yang lebih baik dibandingkan sea water. Pengetahuan akan sifat fisik dan rheologi lumpur pengeboran ini sangat penting diketahui sebagai pengetahuan dasar sebelum menginjak ke dunia kerja. Oleh karena itu SMK Migas Cibinong sebagai salah satu sekolah pencetak calon Petroleum Engineer, pelatihan menjadi sebuah tambahan pengetahuan sebagai bekal guru kimia dan laboran dalam pengembangan materi dasar pengeboran. Sehingga dari kegiatan ini terjadi transfer ilmu dari tim PkM (Pengabdian kepada Masyarakat) kepada guru kimia dan laboran di SMK Migas Cibinong tentang penerapan ilmu pengeboran khususnya lumpur menggunakan sistem prehidrasi bentonite. Sehingga saat memasuki jenjang sarjana strata satu di program studi terkait ilmu kebumian, mereka sudah memiliki bekal yang dapat dikembangkan
Structural, Electrochemical, Bacterial Activity, Hardness, and Thermal Properties of Mg Alloy with Various Zn Contents Premono, Agung; Basori, Imam; Sukarno, Ragil; Susetyo, Ferry Budhi; Alhamidi, A. Ali; Anugrah, Hanif Setia; Muqafillah, Mochammad Fajr Dzakwan; Yudanto, Sigit Dwi; Hasbi, Muhammad Yunan; Situmorang, Evi Ulina Margareta; Edbert, Daniel; Mutiara, Etty; Kriswarini, Rosika; Jamaludin, Agus; Ajiriyanto, Maman Kartaman; Rosyidan, Cahaya
Science and Technology Indonesia Vol. 11 No. 1 (2026): January
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.2026.11.1.96-108

Abstract

Magnesium (Mg) alloy is used for various medical purposes, such as bone implants. In the present study, MgAlSixZn alloys were created utilizing the gravity casting by adding various Zinc (Zn) (x is 0, 0.5, 1.2, and 1.7 wt.%) and then homogenized at 400 ◦C for around two hours. MgAlSixZn as homogenized samples were investigated for microstructure, phase structure, electrochemical behavior, surface morphology, bacterial activity, hardness, and thermal behavior using an optical microscope, XRD, Potentiostat, SEM-EDS, digital camera, Vickers hardness test, and Thermogravimetric apparatus, respectively. Several findings include that increasing Zn content implies a grain growth inhibition mechanism facilitated by Zn segregation at grain boundaries, increased corrosion rates, a rise in the hardness, and increased weight loss. It should be noted that the increase in the corrosion rate and weight loss occurs linearly for Zn addition in the Mg alloy until 1.2 wt.%. An increase in Zn concentration causes the peak shift in MgAlSi-based alloy samples, but no crystallographic orientation is apparent. At the end, the highest corrosion rate and inhibition area are observed in MgAlSi1.2Zn, which indicates that it is suitable for biodegradable orthopedic wire.
Penerapan Fisika Komputasi dengan MATLAB/Simulink pada Pemodelan Infeksi Wabah COVID-19 di Indonesia melalui Modifikasi Persamaan Differensial Bernoulli Valentinus Galih Vidia Putra; Andrian Wijayono; Juliany Ningsih Mohamad; Irwan Irwan; Cahaya Rosyidan
Jurnal Teori dan Aplikasi Fisika Vol. 8 No. 2 (2020): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v8i2.263

Abstract

The application of physics, in particular, the topic of differential equations is commonly used in mathematics, physics, engineering, and various other sciences to explain a phenomenon in a system, to produce a form of simulation and prediction of a fairly good mathematical equation is needed. This paper examines the use of MATLAB / Simulink to assist in modeling the solution of the differential equation problems by providing a case of mathematical modeling in the analysis of the COVID-19 plague in Indonesia in 2020 with the modification of the Bernoulli equation. In this study, it can be concluded that MATLAB / Simulink can be used to solve differential equation problems with Bernoulli's modification in the case of COVID-19 plague modeling quite accurately.
PROSES PELAPISAN NIKEL DIATAS AL DENGAN METODE ELEKTROPLATING Cahaya Rosyidan; Mustamina Maulani; Lisa Samura; Onnie Ridaliani
Jurnal Teori dan Aplikasi Fisika Vol. 10 No. 1 (2022): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v10i1.292

Abstract

Evaluasi Penyebab Terjadinya Hilang Fluida Pemboran Pada Sumur HWF-12 Fadhila Widya Hardi; Maman Djumantara; Cahaya Rosyidan
Jurnal Teori dan Aplikasi Fisika Vol. 14 No. 01 (2026): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v14i01.504

Abstract

Sumur HWF-12, yang berlokasi di Kabupaten Muara Enim, Sumatera Selatan, merupakan salah satu kasus kehilangan lumpur pemboran pada trayek 8 ½’’ di kedalaman 1388 m-MD hingga 2473 m-MD. Untuk mengidentifikasi penyebab masalah ini, dilakukan berbagai analisis, termasuk perhitungan tekanan formasi, tekanan hidrostatik, tekanan rekah formasi, serta Equivalent Circulating Density (ECD). Berdasarkan hasil analisis, kehilangan lumpur di sumur ini tidak dipicu oleh tekanan lumpur yang melebihi batas rekah formasi, melainkan oleh tekanan hidrostatik lumpur yang lebih rendah dibandingkan tekanan rekah formasi. Permasalahan ini berakar pada karakteristik geologi unik dari formasi Talang Akar, yang memiliki pori-pori besar dan struktur formasi menyerupai rongga atau gua. Tantangan ini memerlukan metode penanggulangan yang tepat untuk menghindari kehilangan lumpur lebih lanjut. Beberapa metode yang dapat digunakan meliputi penambahan Lost Circulation Material (LCM), pemboran buta (Blind Drilling), dan pemboran bertekanan rendah (Aerated Drilling). Di sumur HWF-12, tindakan penanggulangan dilakukan dengan menambahkan Lost Circulation Material (LCM) ke dalam lumpur pemboran. Material yang digunakan mencakup CaCO3 F, CaCO3 M, CaCO3 C, Fracseal, dan Stoploss, yang bertujuan menyumbat rongga-rongga besar pada formasi. Pendekatan ini terbukti efektif dalam mengatasi masalah kehilangan lumpur. Penggunaan LCM yang tepat serta strategi penanganan yang sesuai tidak hanya berhasil mengatasi masalah kehilangan lumpur pada Sumur HWF-12, tetapi juga meningkatkan efisiensi pemboran. Selain itu, pendekatan ini membantu mengurangi potensi biaya tambahan yang mungkin timbul akibat kehilangan lumpur selama proses pemboran.   Kata kunci: hilang lumpur, LCM, tekanan formasi, tekanan rekah formasi, tekanan hidrostatik
USE OF ANOVA STATISTICAL METHOD IN EVALUATION OF TOFU WASTEWATER USED FOR SPIRULINA CULTURE MEDIUM ENRICHED WITH UREA AND NaHCO3 Mustamina Maulani; Gabriella Jasmine; Rosmalia Dita Nugraheni; Maman Djumantara; Asri Nugrahanti; Bayu Satiyawira; Cahaya Rosyidan; Lisa Samura; Harin Widiyatni; Pauhesti Pauhesti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 2, OCTOBER 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i2.16933

Abstract

Indonesia has a large amount of liquid waste originating from the tofu industry. Currently, the treatment of tofu industrial wastewater is carried out using both anaerobic and aerobic methods, but both methods still have several weaknesses. In this study, the tofu industrial wastewater was utilized as a culture medium for Spirulina sp. to provide economic value from wastewater that can be used as bioethanol, pharmaceuticals, and food products rich in omega 3, chlorophyll, carotenoids. Aim: The growth of Spirulina sp. is closely related to the availability of macro and micronutrients as nutrients and the influence of environmental conditions, so this study was aimed to see the best variation of the addition of urea and NaHCO3 as additional nutrients to maximize growth and cell density of Spirulina sp. with tofu industrial wastewater media. Methodology and Results: This study was done by culvitating Spirulina sp in the growth media, measuring the Optical Density (OD), and analyzing quantitatively and using ANOVA on IBM SPSS Statistics version 20. The study indicated that adding urea and NaHCO3 to Spirulina sp. had no effect on cell density and growth rate. Treatment with addition of urea 0.36 g/500 ml without additional of NaHCO3 had the highest growth rate, 0.00852/day, and the highest cell density value on Spirulina sp. growth. Conclusion, significance, and impact study: The tofu liquid waste can be used as a new alternative used as fertilizer because in the liquid tofu waste, it provides the nutrients needed by Spirulina sp.
Drilling Fluid Optimization Using Response Surface Methodology Satiyawira, Bayu; Maulani, Mustamina; Samura, Lisa; Pramadika, Havidh; Nugrahanti, Asri; Rosyidan, Cahaya; Prima, Andry; Arkaan, Muhammad Dzaki; Yanti, Widia
Scientific Contributions Oil and Gas Vol 48 No 4 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i4.1900

Abstract

Water-based drilling fluids commonly exhibit rheological degradation under high-temperature, high-pressure (HTHP) conditions, resulting in significant reductions in viscosity, yield point (YP), and gel strength (GS). Previous studies relying on conventional additives such as PAC, CMC, KOH, and NaOH have not fully resolved this issue, particularly in maintaining rheological stability at elevated temperatures. This study addresses this gap by introducing an alkaline polymer as a multifunctional additive intended to replace several conventional components while enhancing thermal resistance. Response Surface Methodology (RSM) with a Box–Behnken design was used to evaluate the combined effects of Carboxymethyl Cellulose (CMC) and alkaline polymer at three temperature levels: 80°F, 150°F, and 250°F. Experimental results show that at 150°F, the optimized formulation consists of 3.5 g CMC and 3.6 g alkaline polymer, yielding a viscosity of 17.64 cP, plastic viscosity of 12.46 cP, and a YP of 7.72 lb/100 ft², representing a substantial improvement compared to the baseline formulations, where YP values decreased significantly with temperature. The optimized mud also demonstrated improved gel strength and consistent filtrate control relative to non-optimized systems. The novelty of this study lies in the use of an alkaline polymer as a single multifunctional substitute for multiple drilling-fluid additives, combined with a multi-temperature RSM optimization framework. The findings provide a simplified, thermally stable drilling-fluid formulation suitable for HTHP environments.
EVALUASI PERBANDINGAN HASIL ACCRETION, LSM, EROSION TEST PADA KCL DAN HPWBM PADA PENCEGAHAN TERJADINYA BIT BALLING: COMPARATIVE EVALUATION OF ACCRETION, LSM, AND EROSION TEST RESULTS ON KCL AND HPWBM TO PREVENT BIT BALLING. Muhamad Zidan Gymnastiar; Maman Djumantara; Cahaya Rosyidan
Jurnal Eksakta Kebumian Vol. 5 No. 1 (2026): JURNAL EKSAKTA KEBUMIAN (JEK)
Publisher : Fakultas Teknologi Kebumian dan Energi, Universitas Trisakti

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

Abstract

Pemboran bertujuan mencapai reservoir hidrokarbon, namun sering menghadapi masalah teknis seperti bit balling, terutama saat melewati formasi shale reaktif. Bit balling terjadi akibat interaksi buruk antara lumpur dan formasi, dipicu oleh sifat tanah liat seperti smectite yang menyerap air. Di Sumur ZM trayek 12¼", potensi bit balling cukup tinggi karena nilai CEC mencapai 20–22 meq/100g. Empat formulasi lumpur berbasis KCl dan HPWBM diuji melalui accretion, LSM, dan erosion. Hasil terbaik ditunjukkan oleh Mix 2, dengan LSM 2,10%, accretion 2,80%, dan erosion 14,65%, membuktikan kemampuannya dalam mencegah bit balling secara efektif.
Rotating-Magnetic-Field-Assisted Electrodeposition of Copper for Ambulance Medical Equipment Syamsuir Syamsuir; Ferry Budhi Susetyo; Bambang Soegijono; Sigit Dwi Yudanto; Basori Basori; Maman Kartaman Ajiriyanto; Daniel Edbert; Evi Ulina Margaretha Situmorang; Dwi Nanto; Cahaya Rosyidan
Automotive Experiences Vol. 6 No. 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

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.
Co-Authors - Sunardi - Sunardi Abdul Hamid Agus Jamaludin Agus Jamaludin Alfiandi Sembiring Alhamidi, A. Ali Aliya Mayendra Ammar Ammar Andreas Junianto Andreas Junianto Andry Prima Anggrainy, Rani Anugrah, Hanif Setia Arinda Riswati Arkaan, Muhammad Dzaki Aryanto, Reza Asri Nugrahanti Asri Nugrahanti, Asri Aulia Alfath Auliya, Hilyah Bambang Soegijono Bambang Soegijono Basori Basori 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 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 Fadhila Widya Hardi Ferry Budhi Susetyo Ferry Budhi Susetyo Gabriella Jasmine Galih Vidia Putra, Valentinus Gemintang Atlantika Urbiyanto hanz seca rifansyah cipta maheza Harin Widiyatni Hasbi, Muhammad Yunan Havid Pramadika Havidh Pramadika Heri Hardiyanti Hidayat, Hifdzan Rizki Hidayat, Hifzhan Rizki Hilyah Auliya Imam Basori 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 Djumantara, Maman Maman Kartaman Ajiriyanto Maman Kartaman Ajiriyanto Mansor, Muhd Ridzuan Maulani, Mustamina Michael, David Mixsindo Korra Herdyanti Mohamad, Juliany Ningsih Mohammad Apriniyadi Muh Taufiq Fathaddin Muhamad Zidan Gymnastiar Muhammad Burhannudinnur Muhammad Burhannudinnur Muhammad Burhannudinnur Muhammad Yunan Hasbi Mulia Ginting, Mulia Muqafillah, Mochammad Fajr Dzakwan Mustamina Maulani Mustamina Maulani Nababan, Frederik Gresia Nadhira Andini Onnie Ridaliani Onnie Ridaliani, Onnie Pantjanita Novi Hartami Pauhesti Pauhesti Pauhesti Pauhesti Pauhesti Pearlo, Kevin Lukas Pramadika, Havid Prapansya, Onnie Ridaliani Premono, Agung 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 Ruliyanta Samsol Samura, Lisa Shabrina Sri Riswati Sigit Dwi Yudanto Sigit Rahmawan Soekardy, Mentari Gracia Suherman Dwi Nuryana Sukarno, Ragil Suryo Prakoso, Suryo Susetyo, Ferry Budhi 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