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All Journal Alchemy : Journal of Chemistry Jurnal Transportasi KOVALEN: Jurnal Riset Kimia Indonesia Chimica Acta Al-Kimia Walisongo Journal of Chemistry Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Dimasejati: Jurnal Pengabdian Kepada Masyarakat International Journal Of Science, Technology & Management (IJSTM) Journal Of Human And Education (JAHE) Edelweiss : Journal of Innovation in Educational Research
Alif, Alfiah
Departement Of Chemistry, Faculty Science And Technology, Sembilanbelas November Kolaka University, Indonesia
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 Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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OPTIMALISASI KUALITAS PELAYANAN TRANSPORTASI PELAYARAN RAKYAT RUTE BAUBAU–SIOMPU Azhar Aras Mubarak; Akhmad Fadli; Tri Marniati; Alfiah Alif
Jurnal Transportasi Vol. 21 No. 3 (2021)
Publisher : Forum Studi Transportasi antar Perguruan Tinggi (FSTPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jtrans.v21i3.5448.187–198

Abstract

Abstract Improving the quality of service is absolutely necessary to create a positive perception of service users. If the service received is good, it will provide satisfaction and increase customer loyalty, which directly affects the income of ship owners. This study was conducted to determine the effect of customer satisfaction and loyalty on the quality of service on people’s shipping transportation, as well as to determine the initial design of the ship that can be used in the conditions of the Baubau–Siompu area. Data analysis uses validity and reliability tests and the initial design of the ship uses the provisions of the International Maritime Organization. This study shows that customer satisfaction and customer loyalty both affect the quality of existing services. However, the effect of customer satisfaction is greater than that of customer loyalty. In addition, although the score of service quality obtained is fairly high, the improvement of services on the Baubau–Siompu route needs to be improved, by implementing a ship design equipped with safety equipment, and with the main size of the ship length 17 m, ship width 3.8 m, ship draft 1.4 m, the speed of 12 knots, and the ship has a capacity of 40 passengers and 5 motorcycles. Keywords: people's shipping; service quality; customer satisfaction; customer loyalty; ship design Abstrak Peningkatan kualitas pelayanan mutlak diperlukan untuk memunculkan persepsi positif pengguna jasa layanan. Jika pelayanan yang diterima baik, akan didapat kepuasan dan peningkatan loyalitas pelanggan, yang secara langsung memengaruhi pendapatan pemilik kapal. Penelitian ini dilakukan untuk mengetahui pengaruh kepuasan dan loyalitas pelanggan terhadap kualitas pelayanan pada transportasi pelayaran rakyat, serta mengetahui desain awal kapal yang dapat digunakan pada kondisi wilayah Baubau–Siompu. Analisis data menggunakan uji validitas dan reliabilitas dan desain awal kapal menggunakan ketentuan International Maritime Organisation. Studi ini menunjukkan bahwa kepuasan pelanggan dan loyalitas pelanggan sama-sama memengaruhi kualitas pelayanan yang ada. Namun, pengaruh kepuasan pelanggan lebih besar dengan dibandingkan dengan loyalitas pelanggan. Selain itu, meskipun nilai kualitas pelayanan yang diperoleh terbilang tinggi, namun peningkatan pelayanan pada trayek Baubau–Siompu perlu ditingkatkan, dengan menerapkan desain kapal yang dilengkapi dengan alat keselamatan, dan dengan ukuran utama kapal adalah panjang 17 m, lebar 3,8 m, sarat kapal 1,4 m, kecepatan 12 knots, serta kapasitas kapal 40 penumpang dan 5 sepeda motor. Kata-kata kunci: pelayaran rakyat; kualitas pelayanan; kepuasan pelanggan; loyalitas pelanggan; desain kapal
Seleksi Sel Bakteri Dari Minyak Bumi Sebagai Molekul Pengenal Dalam Biosensor Benzena Alfiah Alif; Dyah Iswantini; Henny Purwaningsih; Novik Nurhidayat; Amalyah Febryanti
Al-Kimia Vol 9 No 2 (2021): DESEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i2.24378

Abstract

Benzene is one of the harmful compounds which can affect both healthcare and environmental quality. Conventionally the effort of detecting this compound still requires several sample pre-treatments, contributing to a long analysis time and sophisticated instrumentation. Therefore, this study was aimed to determine the potency of bacteria as the bioreceptor for detecting benzene electrochemically. The bacteria isolate was immobilized on the working electrode surface. Four bacteria isolates from the petroleum sample were evaluated. The results showed that isolate II produced high oxidation and reduction peak currents as much as 150 µA and -490 µA respectively. The selected bacteria showed characteristics to Pseudomonas sp. physiologically. Since the bacteria can degrade benzene, thus hypothetically it can produce benzene dioxygenase. Through the catechol formation, 3 mM benzene produced 108.7 µA after 11.4 s from the starting scan. This result suggested that the excreted enzyme from the selected bacteria could react with benzene enzymatically.
Sintesis Karbon Nanopori Bebas Silika dari Ampas Tebu (Saccharum officianarum) melalui Iradiasi Ultrasonik Alfiah Alif; Azhar Aras Mubarak
SAINTIFIK Vol 8 No 2 (2022): Saintifik: Jurnal matematika, sains, dan pembelajarannya.
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v8i2.366

Abstract

Telah dilakukan penelitian tentang sintesis karbon nanopori bebas silika dari ampas tebu (Saccharum officianarum) melalui iradiasi ultrasonik. Penelitian ini bertujuan untuk mengetahui hasil karakterisasi dari sintesis karbon nanopori bebas silika. Sintesis karbon nanopori dari bahan ampas tebu, melewati 3 tahapan proses yaitu, preparasi, karbonisasi, dan ekstaksi silika dengan NaOH 5 M. Karakterisasi dilakukan dengan dan tanpa perlakuan iradiasi ultrasonik. Hasil karakterisasi melalui FTIR menunjukkan terjadi peningkatan intensitas yang tajam berupa vibrasi rentangan C=C dari gugus aromatik pada bilangan gelombang 1606,70 cm-1, dan vibrasi rentangan C=O pada bilangan gelombang 1714,702 cm-1. Hasil SEM menunjukkan morfologi karbon yang diiradiasi memberikan struktur pori yang lebih kecil, banyak, dan terdistribusi secara merata, sedangkan metode pengujian EDS menunjukkan komposisi unsur terbanyak adalah karbon 68.8%. Hasil analisis luas permukaan melalui metode metilen biru dalam kondisi optimum iradiasi gelombang ultrasonik pada suhu 30 oC selama 15 menit yaitu 185,0073 m2/g. Karbon nanopori bebas silika dengan perlakuan iradiasi ultrasonik memberikan hasil yang baik dibandingkan tanpa iradiasi ultrasonik
Optimization and Validation of Electrochemical Biosensor Based on Pseudomonas sp. Biofilm Immobilized on Screen-Printed Carbon Electrode in Detecting Benzene Alfiah Alif; Dyah Iswantini; Henny Purwaningsih; Novik Nurhidayat; Ali Aulia Ghozali; Amalyah Febryanti
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 15, No 1: June 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v15i1.19008

Abstract

Benzene is known as one of the hazardous compounds potentially interfering the health and polluting the environment. Generally, detecting benzene still requires a long analysis time and expensive costs. Therefore, this study aimed to evaluate the analytical performance of a biosensor with microbes as the biodetection element. Pseudomonas sp. biofilms which produce benzene dioxygenase enzyme and then immobilized on a Screen-Printed Carbon Electrode (SPCE). The results of the optimization of the biosensor obtained a benzene concentration of 3 mM, a bacterial density of 1.4x1011 cells/mL and suspension pH of 7.5. The optimization results are used to measure the analytical performance of the biosensor. The value of analytical performance produced on linearity is in the measurement range of 0.1 - 3 mM, the equation y = 7.4118x + 80.048 with R2 = 0.9744. The detection limit and quantity limit are 0.5630 mM and 1.8767 mM respectively, with a sensitivity of 7.4188 μA/mM. The precision obtained shows that the SPCE biofilm method has moderate accuracy with a %SBR value below 5%. The selectivity of this method still needs to increase, but the stability of the benzene biosensor increases up to 35 days with an activity of 100.36%. This indicates the immobilization of Pseudomonas sp. had potency as an alternative method for detecting benzene and it can be developed for a prototype.
Studi Pemanfaatan Limbah Cair Ikan dan Udang sebagai Substrat dalam Produksi Listrik pada Sistem Microbial Fuel Cell (MFC): Study of Utilization of Fishery and Shrimp Wastewater as Substrate in Electricity Production in Microbial Fuel Cell (MFC) System Alfiah Alif; Muhamad Jalil Baari; Amalyah Febryanti
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 3 (2022): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i3.16033

Abstract

Microbial fuel cell (MFC) is a technology that utilizes bacteria in organic medium that can convert chemical energy into electrical energy. This technology can be used to treat fishery waste and shrimp waste which is rich in organic matter. This study aimed to measure the performance of the MFC system on fishery wastewater and shrimp wastewater as a means of producing bio-electricity while reducing the waste load. This study used different types of electrodes, including zinc, aluminum, copper, and carbon graphite. This technology used 0.2 M KMNO4 electrolyte solution. The research method includes three stages; production of fishery wastewater and shrimp wastewater, assembly of a dual chamber MFC bioreactor, and measurement of waste electrical energy produced. The value of electricity production with the highest average in fishery wastewater was obtained by adding electrolyte solution to the Zn/Cu electrode during 117 hours of observation were 6.86 mA with a potential difference of 1.469 V meanwhile in shrimp wastewater was obtained by adding electrolyte solution to the Al/Cu electrode were 4.38 mA with a potential difference of 1.335 V.This study can be concluded that higher electricity production is obtained from the utilization of fish wastewater using Zn/Cu electrode.
Performance of Sediment Microbial Fuel Cells in Generating Electricity using Fish Wastewater and Shrimp Wastewater as a Nutrient and Their Effect on Waste Quality Alfiah Alif; Muhamad Jalil Baari; Amalyah Febryanti
International Journal of Science, Technology & Management Vol. 4 No. 1 (2023): January 2023
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v4i1.673

Abstract

Sediment Microbial Fuel Cell (MFC) is a technology that can convert chemical energy into electrical energy through the process of nutrient degradation by microbes. Sediment taken from the bottom of shrimp ponds was added as a source of microbes, while fish and shrimp wastewater were used as a source of nutrients for microbes. This study aims to measure the performance of the SMFC system on fish effluent and shrimp effluent to produce bio-electricity while reducing the waste load. The research method was experimental laboratories. The treatment given was the different types of electrodes, namely zinc-copper and aluminum-copper. In addition, 0.2 M KMnO4 electrolyte solution was used. This study consisted of four stages: the manufacture of nutrients from fish and shrimp wastewater, the manufacture of a dual chamber MFC bioreactor, the measurement of electrical values, and the analysis of waste quality. Experiments were carried out for 30 days by measuring electricity every 24 hours. The average value of electricity generated in the nutrients of fish wastewater with Zn/Cu electrodes was 0.705 V and Al/Cu was 0.472 V. Meanwhile, the average value of electricity in shrimp wastewater nutrients with Zn/Cu electrodes was 0.630 V and Al/Cu was 0.625 V. The number of colonies after adding sediment in the shrimp wastewater sample were 8.9 x 106 CFU/mL, the fish wastewater sample was 9.5 x 106 CFU/mL. It indicates the presence of microorganisms that play a role in the SMFC system
Synthesis of Bioplastics on Rice Straw Cellulose Using Orange Peel Extract, Chitosan, and Sorbitol Sitti Chadijah; Harianti Harianti; Amalyah Febryanti; Alfiah Alif; Maulidiyah Maulidiyah; Akrajas Ali Umar
Walisongo Journal of Chemistry Vol 5, No 2 (2022): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v5i2.10090

Abstract

With the use of several plasticizers (orange peel extract, chitosan, and sorbitol), rice straw cellulose has been used to synthesize and characterize bioplastics. This study aims to synthesize and characterize bioplastics from rice straw cellulose with various additions of plasticizers, namely orange-peel extract, chitosan, and sorbitol, each with a certain concentration so that quality improvement can occur. The methods used in this study include testing the tensile strength value, testing the percentage elongation, and testing the percentage of biodegradation. In addition, functional group characterization tests were also carried out using FTIR. The results obtained in this study were the best values for tensile strength and percentage elongation in treatment A, namely 10.2611 MPa and 13.88%. The percentage of biodegradation for 7 days reached 50.58%. Functional group absorptions were found in various plasticizers, namely C-H, O-H, C-O, C-N, and C=C. Based on existing data, bioplastics synthesized using rice straw cellulose in various plasticizers meet JIS (Japan Industrial Standards).
Pelatihan Pembuatan Briket dengan Bahan Limbah Tempurung Kelapa pada Kelompok Masyarakat Desa Balobone Kecamatan Mawasangka Kabupaten Buton Tengah Mubarak, Azhar Aras; Samaluddin, Samaluddin; Yuvita Satriani Djuli; Rahmawati Djunuda; Alfiah Alif; Alfonds Andrew Maramis; Anatje Lihiang; Moh Fikri Pomalingo
DHARMA RAFLESIA Vol 21 No 2 (2023): DESEMBER (ACCREDITED SINTA 5)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v21i2.31372

Abstract

Salah satu program unggulan kegiatan Kosabangsa (Kegiatan Sosial Membangun Masyarakat) Tim Kolaborasi USN Kolaka dengan UNIMA Manado untuk pelaksanaan tahun 2023 adalah memberikan pelatihan kepada masyarakat Desa Balobone Kecamatan Mawasangka Kabupaten Buton Tengah tentang pengolahan tempurung kelapa menjadi briket yang digunakan sebagai bahan bakar alternatif dalam kehidupan sehari-hari khususnya dalam memanggang makanan yang bisa menjadi nilai jual jika dibuat dengan baik. Potensi kelapa yang besar di lingkungan desa menjadi faktor utama dalam mengolah tempurung kelapa yang selama ini sebagian besar hanya dibuang atau dibakar langsung. Dengan ditunjang dengan pengadaan mesin TTG pengolah tempurung kelapa menjadi briket maka diharapkan produksi briket di desa memanfaatkan potensi perkebunan dapat berjalan maksimal.  Metode yang diterapkan pada kegiatan ini adalah penyampaian materi pembuatan briket, kemudian dilanjutkan dengan praktik langsung pengolahan tempurung kelapa menjadi briket dengan melalui proses persiapan, penghancuran tempurung, pencampuran, pencetakan pada mesin dan pengeringan. Kegiatan ini menarik antusias yang besar dari masyarakat sekitar sehingga kedepan masyarakat mampu mengolah sendiri limbah tempurung kelapa yang tidak terpakai. Tujuan akhir yang ingin dicapai adalah meningkatan pemahaman dan keterampilan masyarakat sekitar dalam pengolahan tempurung kelapa menjadi briket siap pakai.
Synthesis of Smart Packaging from Cellulose Acetate with The Addition of AgNO3 as An Antibacterial Substance Febryanti, Amalyah; Benu, Marlon; Aferta, Lusi; Siswara, I.M; Mulijani, Sri; Alif, Alfiah
ALCHEMY:Journal of Chemistry Vol 12, No 1 (2024): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v12i1.13019

Abstract

Synthesis of smart packaging from cellulose acetate with the addition of AgNO3 as an antibacterial substance has been investigated. The purpose of this study is to fabricate smart packaging from cellulose acetate with the addition of AgNO3 as an antibacterial substance. The method used was solution casting. In addition, this study was also characterizing the smart packaging, they included tensile strength and elongation percent test, antibacterial test, morphology analysis using SEM, and biodegradability test. The plastics obtained were clearly yellow, not easily damaged, a little thick, and the smooth surface and slightly bubbly. The largest tensile strength of plastic was 0.0661 MPa, it found in sample No. 2, while the smallest tensile strength was 0.027 MPa, it found in sample No. 1. The greatest elongation value at break was 5% found in sample No. 4, while the smallest elongation value at break was 3.5% in sample No. 3. The result of antibacterial test reported that the freshest mangoes were shown by samples No. 1 and No. 2; while the fast-rotting mangoes were shown in the sample No. 3 and No. 4. The results of the SEM test showed the presence of nano-sized particles that spreaded in the plastic body. The greatest degradability degree were sample No. 4 about 0.0009 g/day with the percentage of mass loss about 17.38%. Futhermore, cellulose acetate can be used as a basic material for making plastics. The addition of AgNO3 in plastic synthesis can help to delay the process of fruit spoilage caused by bacteria.
Implementasi Software Hyperchem sebagai Media Praktikum Elektronik Visualisasi Struktur dan Sifat Senyawa Kimia di SMAN 1 Mawasangka Timur Baari, Muhamad Jalil; Na’ani, L A; Agusriyadin, Agusriyadin; Megawati, Megawati; Anindita, Faradisa; Alif, Alfiah; Salim, Salim; Andas, Netty Huzniati; Prasetya, Arif; Sarimuddin, Sarimuddin; Permana, Dian
Dimasejati: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 3 (2023): Penguatan Peran Perguruan Tinggi dalam Percepatan Pembangunan Sumber Daya Manusi
Publisher : IAIN Syekh Nurjati Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24235/dimasejati.v5i3.13507

Abstract

Chemistry is not merely a science that only studies theory in class. Chemistry learning requires practical or experimental activities to observe and directly apply chemical concepts during face-to-face meetings in class. Meanwhile, the unavailability of laboratory facilities is one of the factors in not carrying out chemistry practice. This causes students difficulties in understanding the concept of chemistry as a whole and can potentially reduce learning motivation. This public service activity aims to implement the Hyperchem software for teachers and students of SMA Negeri 1 Mawasangka Timur as an alternative solution for chemistry labs in the form of electronic labs. The chemical topics selected and considered suitable for this type of practice were the structure and properties of chemical compounds. This activity is carried out in the form of a workshop. Workshop materials use lectures, simulations, discussions, and question-and-answer models. The activity's results showed the workshop participants' enthusiasm to use the Hyperchem software as a chemistry lab media. This is reflected in the evaluation of the workshop implementation, which is carried out by assessing the response of the workshop participants based on indicators of relevance, the ability of the presenters, ease of use, availability, and usefulness of the Hyperchem software. The evaluation results show that the workshop and the implementation of the Hyperchem software as an electronic practice media for visualizing the structure and properties of chemical compounds received a positive response from the workshop participants.
Co-Authors Aferta, Lusi Agusriyadin, Agusriyadin Akrajas Ali Umar Alfonds Andrew Maramis Ali Aulia Ghozali Amalyah Febryanti Amalyah Febryanti Amalyah Febryanti Amalyah Febryanti Anatje Lihiang Andas, Netty Huzniati Arif Prasetya Benu, Marlon Jusak Rinaldy Dian Permana Dyah Iswantini Elisa Fitria Mukti Faradisa Anindita Febryanti, Amalyah Finarisnawati, Finarisnawati Firnayanti Mbuli Harianti Harianti Henny Purwaningsih Ibrahim, Akhmad Fadli Inda Inda Kurniawan, Muhammad Akbar S Kurniawan, Muhammad Akbar S. La Na’ani Maulidiyah Maulidiyah Megawati - Megawati Megawati Megawati, Megawati mubarak, azhar aras Muhamad Jalil Baari Muhammad Akbar S. Kurniawan Novik Nurhidayat Novik Nurhidayat Nurmira Nurmira Pomalingo, Moh Fikri Rahmawati Djunuda Salim Salim Samaluddin Samaluddin, Samaluddin Sarimuddin, Sarimuddin Siswara, I.M Sitti Chadijah Sri Mulijani Tri Marniati Waangkaali Warda Hairia Windi Indriani Yuli Fazira Yuvita Satriani Djuli