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All Journal HAYATI Journal of Biosciences Jurnal Sains Materi Indonesia World Chemical Engineering Journal Prosiding Semnastek Warta IHP (Warta Industri Hasil Pertanian) Public Health of Indonesia Communications in Science and Technology Menara Perkebunan Nizham Journal of Islamic Studies Journal of Robotics and Control (JRC) ASEAN Journal of Chemical Engineering Jurnal Teknik Kimia Indonesia Journal of Integrated and Advanced Engineering (JIAE) Pharmaceutical Sciences and Research (PSR) Makara Journal of Technology Jurnal Sains Materi Indonesia
Misri Gozan
Departemen Teknik Kimia - UI Kampus Baru UI, Depok
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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PERILAKU HOMOSEKSUAL: MENCARI AKAR PADA FAKTOR GENETIK Misri Gozan
Nizham Jurnal Studi Keislaman Vol 4 No 1 (2016): Islam dan LGBT
Publisher : Postgraduate State Islamic Institute (IAIN) Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.086 KB)

Abstract

The study based on literatures on this article presents data that is critical discourses of homosexuality and genetics. This article does not disclose the direction of Islam in terms of homosexuality because it is so obvious expressed in the Koran and explained by the righteous mufassir, muslim clerics and scholars. There is no strong data linking specific genetic factors with the emergence of homosexual behavior. Research conducted by the proponents of homosexual showed no single gene that govern human behavior which is a very complex phenomena. In other words, the genes do not determine behavior of homosexuality in particular. Expressed genes responsible for the nature of homosexuality is also interpreted as genes responsible for other mental problems. The experts further revealed that homosexual orientation is strongly affected by the events and stimuli experienced by either of the environment with a growing degree of openness to homosexual behavior as well as due to the availability of information, especially in cyberspace. Some chemicals are suspected of causing physical changes and influence on sexual orientation. Efforts of healing through action or medical intervention are not impossible. Some researches suggest that homosexual behavior is more aggressive than men hetersexual both in individual and family scale. The author sees the belief that genetic factors are the reason for accepting homosexual behavior has no strong scientific roots. Behavior of homosexuality thus can actually be, or should be, repaired and healed.
Lignin decomposition of Oil Palm Frond by Pleurotus ostreatus with a variation of corn and rice-husk media Misri Gozan; Nadia Chrisayu Natasha; Penjit Srinophakun
Journal of Integrated and Advanced Engineering (JIAE) Vol 2, No 1 (2022)
Publisher : Asosiasi Staf Akademik Perguruan Tinggi Seluruh Indonesia (ASASI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51662/jiae.v2i1.40

Abstract

This study aimed to decompose lignin from oil palm midrib (OPF) bonds using the fungus Pleurotus ostreatus with various substrates (corn and rice husk). Lignin and cellulose levels before and after mushroom culture were tested by the Chesson-Datta method. Substrate variation with corn and husk rice showed that the addition of corn did not play a role in lignin decomposition. After being given treatment, the best degradation was using 0.6 grams of rice bran and 0.4 grams of CaCO3, 22.01% for lignin and 32.74% for cellulose.
Preliminary Study of Potential Bioimplant from Glycerol Plasticized Starch-Microcrystalline Cellulose Composite Galih Rineksa; Yudan Whulanza; Misri Gozan
Journal of Integrated and Advanced Engineering (JIAE) Vol 1, No 1 (2021)
Publisher : Asosiasi Staf Akademik Perguruan Tinggi Seluruh Indonesia (ASASI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51662/jiae.v1i1.10

Abstract

Biodegradable and bio-based substitutes for conventional plastics are on the rise in these past decades. One of the applications of bioplastic is for biomedical implants or bioimplant. Starch was plasticized using glycerol at varying amounts (40% and 60% of dry starch mass) to produce thermoplastic starch (TPS). A reinforcement filler of microcrystalline cellulose (MCC) was used to improve the mechanical properties. The MCC content in this study was also varied (0%, 2%, 4%, and 8% w/w). This paper studies the mechanical properties of starch-MCC composites for their potential as bioimplant. The optimum glycerol and MCC contents from the results are 40% glycerol and 8% MCC with 2.97 MPa tensile strength and 7.20% strain at break. Thus, the sample has the potential application in bioimplant material for trabecular bone replacement, which has an average tensile strength of 2 MPa and strains at a break of 2.5%.
Enhanced Chlorella vulgaris Buitenzorg growth by Photon Flux Density Alteration in Serial Bubble Column Photobioreactors Anondho Wijanarko; Dianursanti Antonius Yudi Sendjaya; Misri Gozan; Roekmijati Widaningroem Soemantojo; Arief Budi Witarto; Kazuhiro Asami Kazuhisa Ohtaguchi
ASEAN Journal of Chemical Engineering Vol 7, No 1 & 2 (2007)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (196.265 KB) | DOI: 10.22146/ajche.50131

Abstract

Micro algae are photolitotrophs that perform oxygenic photosynthesis and capable of accumulating a large amount of CO2, using an inducible CO2 concentrating mechanism (CCM). These characteristics make the micro algae potentially useful for removal and utilization of CO2 emitted from industrial plant. Generally, the usage of photosynthetic microorganism in CO2 fixation and biomass production for the economically viable commodities have been increased and significantly improved as a solution for this problem. Using these facts and previous research results using Anabaena cylindrica IAM M1 and Spirulina platensis IAM M 135, enhancement of CO2 fixation and biomass production by Chlorella vulgaris Buitenzorg with photon flux density alteration along with an increasing of culture biomass during the cellular growth period, was implemented in this research. The photon flux density used in this alteration was the maximum light for Chlorella’s maximum growth rate ( I mmax,opt ). The cultivation of Chlorella vulgaris Buitenzorg in the Benneck basal medium operating conditions: T, 29oC; P, 1.0 atm; UG, 2.4m/h; CO2, 10%; using Philip Halogen Lamp 20W/12V/50Hz as the light source and three bubble column photobioreactors arranged in series order with each having a volume of 0.200dm3. Results had shown that the photon flux density alteration as a whole could increase around 60% the biomass production of Chlorella vulgaris and around 7% the CO2 fixation ability, compared to constant photon flux density outcomes. This experiment also showed that the noncompetitive inhibition of [HCO3-] as carbon source substrate is affected significantly during the cultivation in both of alteration and continuous photon flux density.
Pengaruh Variasi Konsentrasi Hidroxy Propyl Methyl Cellulose (HPMC) terhadap Stabilitas Fisik Gel Ekstrak Tembakau (Nicotiana tabaccum L.) dan Aktivitasnya terhadap Streptococcus mutans Yati, Kori; Jufri, Mahdi; Gozan, Misri; Mardiastuti, Mardiastuti; Dwita, Lusi Putri
Pharmaceutical Sciences and Research Vol. 5, No. 3
Publisher : UI Scholars Hub

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Abstract

Tobacco extract had been proven to have antimicrobial activity against Streptococcus mutans. To maximize the use of tobacco extract on topical use as an antibacterial, it could be formulated into a pharmaceutical preparation. This study aimed to formulate tobacco extract in gel preparation by using Hidroxy Propyl Methyl Cellulose (HPMC) as a gelling agent and to test its activity on S. mutans. The tobacco extract gel was prepared in 3 formulas with variations of HPMC concentration of 1.5% (F1), 2% (F2) and 2.5% (F3). The research began with tobacco extraction, then continued with characteristics evaluation. The extract was formulated in gel form and evaluated for 12 weeks of physical stability. Antibacterial activity was tested using the diffusion method. The evaluation results of tobacco extract gel showed that all formulas were stable during 12 weeks storage. Antimicrobial activity against S.mutans showed inhibitory diameter of F1, F2 and F3, were 9,07 mm, 19,53 mm, and 11,57 mm respectively. The test was continued by determining the relative potential of F2 compared to erythromycin. The test results showed 1.2 x 10-2 relative potential compare to erythromycin. Based on the results of this study, it can be concluded that HPMC concentration difference did not give significant difference to the physical stability of tobacco gel, with the best antibacterial activity on S. mutans obtained from F2.
Utilization of Bagasse Cellulose for Ethanol Production through Simultaneous Saccharification and Fermentation by Xylanase Samsuri, M.; Gozan, Misri; Mardias, R.; Baiquni, M.; Hermansyah, Heri; Wijanarko, Anondho; Prasetya, Bambang; Nasikin, M.
Makara Journal of Technology Vol. 11, No. 1
Publisher : UI Scholars Hub

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Abstract

Utilization of Bagasse Cellulose for Ethanol Production through Simultaneous Saccharification and Fermentation by Xylanase. Bagasse is a solid residue from sugar cane process, which is not many use it for some product which have more added value. Bagasse, which is a lignosellulosic material, be able to be use for alternative energy resources like bioethanol or biogas. With renewable energy resources a crisis of energy in Republic of Indonesia could be solved, especially in oil and gas. This research has done the conversion of bagasse to bioethanol with xylanase enzyme. The result show that bagasse contains of 52,7% cellulose, 20% hemicelluloses, and 24,2% lignin. Xylanase enzyme and Saccharomyces cerevisiae was used to hydrolyse and fermentation in SSF process. Variation in this research use pH (4, 4,5, and 5), for increasing ethanol quantity, SSF process was done by added chloride acid (HCl) with concentration 0.5% and 1% (v/v) and also pre-treatment with white rot fungi such as Lentinus edodes (L.edodes) as long 4 weeks. The SSF process was done with 24, 48, 72, and 96 hour’s incubation time for fermentation. Variation of pH 4, 4,5, and 5 can produce ethanol with concentrations 2,357 g/L, 2,451 g/L, 2,709 g/L. The added chloride acid (HCl) with concentration 0.5% and 1% (v/v) and L. edodes can increase ethanol yield, The highest ethanol concentration with added chloride acid (HCl) concentration 0.5% and 1% consecutively is 2,967 g/L, 3,249 g/L. The highest ethanol concentration with pre-treatment by L. edodes is 3,202 g/L.
Kinetic Model For Triglyceride Hydrolysis Using Lipase:Review Hermansyah, Heri; Wijanarko, A.; Dianursanti, Dianursanti; Gozan, Misri; Wulan, Praswasti P. D.K; Arbianti, Rita; Soemantojo, Roekmijati W.; Utami, Tania Surya; Yuliusman, Yuliusman; Kubo, Momoji; Kitakawa, Naomi Shibasaki; Yonemoto, Toshiy
Makara Journal of Technology Vol. 11, No. 1
Publisher : UI Scholars Hub

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Abstract

Triglyceride hydrolysis using lipase has been proposed as a novel method to produce raw materials in food and cosmetic industries such as diacylglycerol, monoacylglycerol, glycerol and fatty acid. In order to design a reactor for utilizing this reaction on industrial scale, constructing a kinetic model is important. Since the substrates are oil and water, the hydrolysis takes place at oil-water interface. Furthermore, the triglyceride has three ester bonds, so that the hydrolysis stepwise proceeds. Thus, the reaction mechanism is very complicated. The difference between the interfacial and bulk concentrations of the enzyme, substrates and products, and the interfacial enzymatic reaction mechanism should be considered in the model.
Purification Simulation With Vapor Permeation and Distillation-Adsorption In Bioethanol Plant Gozan, Misri; Setiawan, Mia Sari; Lischer, Kenny
Makara Journal of Technology Vol. 21, No. 1
Publisher : UI Scholars Hub

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Abstract

High purity of Bioethanol is required in biofuel mixing with gasoline (EXX). In bioethanol production line, the azeotropic property of ethanol-water becomes the barrier for purification process. This study examined two bioethanol separation processes by support of simulation tools, Superpro Designer 9.0 software. Ethanol purity and a low costeconomical process were the major considerations. Purification method of vapor permeation membrane technology was compared with distillation-adsorption method. Data from previous lab experiments and some literatures were used. The results showed that distillation-adsorption method is more economical compared to vapor permeation technology. Payback period of the simulation is 3.9 years and 4.3 years to distillation adsorption and vapor permeation respectively with each IRR value is 20.23% and 17.89%. Initial investment value of vapor permeation is 9.6% higher than distillation method. Significant difference observed in operating costs, since more units involved in vapor permeation require more labors to operate.
TENORM radiation protection patterns for the sustainable health of workers Primanti, Afthina; Kusnoputranto, Haryoto; Purwana, Rachmadhi; Gozan, Misri
Public Health of Indonesia Vol. 9 No. 3 (2023): July - September
Publisher : YCAB Publisher & IAKMI SULTRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36685/phi.v9i3.704

Abstract

Background: Coal production in Indonesia continues to increase to meet national energy needs and export demand. Solid waste from the coal combustion process is estimated to increase significantly. One of the hazardous mining wastes is TENORM, but some TENORM is classified as production goods with economic value. The problem in this research is that the volume of waste containing TENORM is quite large, and the disposal, use, and recycling of TENORM has the potential to cause contamination for workers at the steam power plant and the surrounding environment. Objective: The purpose of this research is to obtain a design model for the protection of the environment and workers against TENORM radioactive waste from coal ash through an analysis of the social and economic perceptions of steam power plant workers regarding TENORM radiation and the effectiveness of TENORM radiation protection education to workers. Methods: A mixed method with a quantitative approach was applied. Data were gathered through field observation utilizing a questionnaire instrument that asked workers working at Steam Power Plant Units 1 – 7 a series of written questions. Results: Prior to Counseling, most Suralaya Steam Power Plant workers had shallow social and economic perceptions of TENORM radiation, with 88 percent unaware of its effects. The majority also paid between 100,000 and 500,000 IDR monthly in medical expenses. All respondents agreed that TENORM radiation safety counseling for Suralaya Steam Power Plant workers was utterly compelling, with acceptance of TENORM and WTP estimates following Counseling being the most important aspect. Conclusion: There was a significant relationship between the WTP variable after Counseling and the variables acceptance of TENORM protection (0.730), TENORM knowledge (0.627) before and after Counseling (after Counseling), and acceptance of TENORM protection (0.648), according to the pattern of protection for the SEM model.
Techno-Economic and Environmental Analysis of an On-Grid and Off-Grid Renewable Energy Hybrid System in an Energy-Rich Rural Area: A Case in Indonesia Umam, Faikul; Wahyu, Fiki Milatul; Efendi, Mochamad Yusuf; Amir, Nizar; Gozan, Misri; Asmara, Yuli Panca
Journal of Robotics and Control (JRC) Vol 5, No 5 (2024)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v5i5.22633

Abstract

Developing a dedicated renewable energy hybrid system is a viable option for extending access to electrical energy in energy-rich rural areas. This study conducted a feasibility analysis of using a hybrid energy system, combining solar photovoltaic, wind, and biogas, to generate electricity and meet the energy needs of the rural area. West Waru Village is selected as the case study area for this research because it has abundant renewable energy sources. The Hybrid Optimization of Multiple Energy Resources (HOMER) tools is employed for modeling and optimizing the hybrid energy system, offering a comprehensive analysis encompassing technical, economic, and environmental aspects. Furthermore, the study's findings were further analyzed through a sensitivity analysis, considering unpredictable factors such as village load consumption, solar radiation, wind speed, and biomass availability. Additionally, the study’s results reveals that the renewable energy hybrid system can meet nearly 80% of the rural area's electrical energy requirements at a cost of $0.16 per kWh, resulting in the reduction of 8.4 million kg of carbon dioxide emissions. These findings can serve as a baseline for stakeholders in developing renewable energy systems in rural areas.
Co-Authors -, Abdurachman Abdul Haris Achmadin L. Machsun Ahmad Fauzantoro Amelia, Fanny Andre Fahriz Perdana Harahap Andre Fahriz Perdana HARAHAP Andri Pramesyanti Pramono Anondho Wijanarko Anondho Wijanarko Anton Irawan Arief Budi Witarto Arif Rahman Bambang Heru Susanto, Bambang Heru Bambang Prasetya Bambang Prasetya Bambang Prasetya Basra Ahmad Amru Cut Nanda D. R. Barleany Dedy Alharis Nasution, Dedy Alharis Denia Apriliani RAHMAN Dianursanti Endang Suhendi, Endang Eny Kusrini Faikul Umam Fajriati Zulfa Fita Sefriana Galih Rineksa Halimah Anggi Rahmani Hardi Putra Harijanto, Fransiskus Xaverius Ray Setiadharma Haris, Abdul Haryoto Kusnoputranto Heri Hermansyah Heri Hermansyah Heriyanti Huwaida, Ariqah Iffah Izzah Nur Fatimah Josia Simanjuntak Kazuhiro Asami Kazuhisa Ohtaguchi Kitakawa, Naomi Shibasaki Kori Yati Kori Yati Lischer, Kenny Lusi Dwita Lusi Putri Dwita M Baiquni M Baiquni M Baiquni M Samsuri M Samsuri, M M. Baiquni Mahdi Jufri Mardias, R. Mardiastuti Mardiastuti Mardiastuti Wahid Marito, Olivia Yolanda Maya Lukita, Maya Meiskha Bahar Mochamad Yusuf Efendi, Mochamad Yusuf Mohammad Mohammad Mohammad Nasikin Mohammad Nasikin Momoji Kubo, Momoji Muhammad Arif Darmawan Muhammad Yusuf Arya Ramadhan Mujtahid Imaduddin Nurahman Muryanto Muryanto Muryanto, Muryanto Nadia Chrisayu Natasha Nanda, Cut Naomi Shibasaki-Kitakawa, Naomi Nasihin Saud Irsyad Nasikin, M. Nizar Amir Nur Fatimah, Izzah Oktania Sandra Puspita Penjit Srinophakun Praswasti P. D.K Wulan, Praswasti P. D.K Praswasti PDK Wulan Praswasti Wulan, Praswasti Primanti, Afthina R Mardias R Mardias, R Rachmadhi Purwana Rahmayetty Rahmayetty Rahmayetty, Rahmayetty Ramadhan, Varrel Ariasatya Renny S. Mokodongan Renny S. Mokodongan Rita Arbianti Roekmijati Soemantojo, Roekmijati Roekmijati W. Soemantojo, Roekmijati W. Roekmijati Widaningroem Soemantojo Samsuri, M. Setiawan, Mia Sari Sheila Azelya Fernanda Shella Wu, Shella Siswa Setyahadi Siswa Setyahadi Siti Nurbayti Sri Budi Harmami Sukirno Sukirno Sukirno Sukirno Tania Surya Utami Teguh Wikan Widodo, Teguh Wikan Toshiy Yonemoto, Toshiy Wahyu, Fiki Milatul Wijanarko, A. Yanni Sudiyani Yemirta Yemirta Yudan Whulanza Yudhi Nugraha Yuli Panca Asmara Yuliusman Yuliusman Yusraini Dian Inayati Siregar Yustinah Yustinah