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All Journal Jurnal Geliga Sains: Jurnal Pendidikan Fisika Jurnal Sains dan Teknologi Jurnal Neutrino Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JOURNAL ONLINE OF PHYSICS Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Fisika FLUX Edumatsains Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Spektra: Jurnal Fisika dan Aplikasinya KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Gorontalo Agriculture Technology Journal Kumawula: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering and Scientific Research (JESR) Journal of Appropriate Technology for Community Services Indonesian Review of Physics (IRiP) Jurnal Pendidikan Fisika dan Sains (JPFS) Journal of Innovation and Technology Jurnal Riset Fisika Indonesia Indonesian Journal of Community Empowerment Newton-Maxwell Journal of Physics Dharma Pengabdian Perguruan Tinggi (DEPATI)

Fitri Afriani

Department Of Physics, Universitas Bangka Belitung

Author-ID : 220826

Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Proteksi Katodik Metoda Anoda Tumbal Untuk Mengendalikan Laju Korosi S, Fitri Afriani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Metal structures are more increasingly used in modern industry. The absence of control or pour control of the corrosion control system, metal structures directly related to the water will be succeptible to corrosion, prevention of corrosion in the marine environment based on the principle of cathodic protection is necessary. Principle of cathodic is protection system on metal surface by means of direct current adequate to the metal surface and convert all of the surface area of the anode becomes cathodic area. This research aims to study the effect of cathodic protection corrosion control, determine and choose the type of anode, size of anode, and number of anode the efficient in use to protect the corrosion. The research plan is conducted with take variation about type of anode such as aluminium mixture and zinc mixture, the size variation of anode and number of anode that are anode and two anode to protect one anode in sea water system and gambut water. Data processing is done byÂ using MPY calculation. In this research to decrease the corrosion rate of steel is better using two amounts of anode from aluminium mixture than using zink mixture in sea water media, similarly the gambut water. The corrosion rate of steel in sea water without cathodic protection is 4,5657 MPY and in gambut water is 3,9445 MPY. Corrosion rate could be decreased to 1,0511 MPY by using two amounts of aluminium mixture with surface area 49,6 cm2 and 1,7704 MPY using two amounts of zink mixture with surface area 49,6 cm2 in sea water and 0,6915 MPY using two amounts of aluminium mixture with surface area 49,6 cm2, and 1,0511 MPY using zink mixture with surface area 49,6 cm2 in gambut water. KeywordsÂ : aluminium mixture,Â cathodic protection, sacrificial anode, zink mixture

MODIFIKASI DISTRIBUSI MUATAN BERDASARKAN DISTRIBUSI FERMI-DIRAC DAN APLIKASINYA PADA HUKUM GAUSS Tiandho, Yuant; Maryana, Okky; Afriani, Fitri; Saefullah, Asep; Pardede, Indra
JST (Jurnal Sains dan Teknologi) Vol 9, No 2 (2020)
Publisher : Universitas Pendidikan Ganesha

Hukum Gauss merupakan salah satu hukum fundamental fisika, khususnya dalam kajian listrik. Salah satu variabel penting untuk dapat menggunakan hukum Gauss adalah kemampuan menentukan muatan yang terlingkupi permukaan Gauss. Umumnya, definisi distribusi muatan suatu objek didefinisikan oleh fungsi sepenggal (piecewise continuous function). Pada makalah ini diajukan suatu model distribusi muatan yang berlaku untuk di seluruh lokasi. Model tersebut disusun berdasarkan analogi dengan fungsi distribusi Fermi-Dirac. Model yang diajukan mengandung fungsi eksponensial yang terkait dengan radius benda dan dilengkapi dengan suatu parameter untuk menghindari munculnya lekukan kurva yang bersifat tidak fisis. Distribusi muatan tersebut dapat digunakan untuk simulasi menghitung muatan yang terlingkupi oleh permukaan Gauss dan menentukan medan listriknya. Beberapa kasus yang ditinjau adalah objek bola padat serta bola konsentris. Jika dibandingkan dengan distribusi muatan konvensional, distribusi muatan termodifikasi lebih sederhana dan dapat mereduksi algoritma proses komputasi. Oleh karena itu hal ini dapat dimanfaatkan dalam pembuatan media pembelajaran berbasis komputer yang ringkas dan sederhana.

COMPARISON OF EFFICIENCY AND CARBON EMISSIONS OF FILAMENT ELECTRIC STOVES AND INDUCTION ELECTRIC STOVES Tiandho, Yuant; Afriani, Fitri
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 14, No 1 (2021): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v14i1.13008

Issues related to energy sustainability and carbon emission reduction are continuously being concerned by the Government of the Republic of Indonesia. Various efforts and programs have been launched to achieve targets of the related issues. As known that energy use for cooking by the household is continuously increasing in relation to population growth that will of course increase in energy need which relates to the sustainability of presence energy and carbon emission.Â Accordingly, the LPG stove conversion program to an electric stove was introduced in order to achieve the target to solve such issues. This paper compared of efficiency and carbon emissions of both electric filament stoves and induction stoves. The result indicated that the induction stove has better efficiency compared with the electric stove. The study also was proved that the carbon emissions for both types of stoves were relatively low in comparison with LPG stoves. However, the enormous operational power of the induction stove is still a challenge that must be resolved to achieve the target of energy sustainability in Indonesia.

Fabrikasi Perancah Berpori Hidroksiapatit dari Tulang Ikan Tenggiri dengan Alginat Sebagai Binder Alami: Sebuah Kajian Naratif Siswoyo Siswoyo; Kumalasari Kumalasari; Sari Wulan; Fitri Afriani
Jurnal Pendidikan Fisika dan Sains (JPFS) Vol. 3 No. 2 (2020): September
Publisher : Pendidikan Fisika, FKIP, Universitas Nahdlatul Ulama Cirebon

Porous scaffolding is an alternative solution developed to assist the bone therapy process. Hydroxyapatite (HAp) is a widely developed material into porous scaffolding because it has good biocompatibility. As a maritime country, Indonesia has high fisheries potential. One potential maritime product waste that could be synthesized into HAp is mackerel bone because it contains high amounts of CaO. This narrative describes a potential method for HAp synthesis from mackerel fish bones and a fabrication method that can be applied to a porous scaffold. Alginate is a natural ingredient from brown algae, which can be used as a porogen to synthesize porous HAp. Because it comes from maritime-based natural materials, algae are relatively safe and easy to produce in Indonesia. It is hoped that from this study, a more comprehensive picture can be obtained related to the development of HAp-based porous scaffolding from mackerel fish bones so that it can be considered for further development.

RANCANG BANGUN ALAT PENGERING OTOMATIS KERUPUK KEMPLANG DI DESA PENYAK Widodo Budi Kurniawan; Fitri Afriani; Herman Aldila; Yuant Tiandho
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 (2021): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v4i1.30037

Kegiatan pengabdian berupa Iptek bagi Masyarakat (IbM) merupakan salah satu penerapan Tri Dharma Perguruan Tinggi. Dengan adanya kegiatan pengabdian IbM, maka diharapkan akademisi dapat berinteraksi secara langsung dengan masyarakat. Lokasi yang menjadi sasaran kegiatan IbM adalah Desa Penyak Kecamatan Koba Kabupaten Bangka Tengah yang mayoritas mata pencaharian penduduknya adalah sebagai nelayan atau petani. Hasil tangkapan nelayan sebagian diolah menjadi kerupuk kemplang. Masalah yang muncul adalah bahwa proses pengeringan masih menggunakan cara tradisonal yaitu melalui penjemuran secara langsung di bawah terik matahari, sehingga proses pengeringan masih bergantung pada cuaca. Salah satu upaya untuk membantu masyarakat, khususnya kalangan kelompok usaha mikro di bawah naungan Badan Usaha Milik Desa (BUMDes) di Desa Penyak dalam mengatasi permasalahan pengeringan kerupuk kemplang adalah melalui sosialisasi pengeringan kerupuk kemplang menggunakan alat pengering otomatis. Kegiatan sosialisasi akan dilanjutkan dengan transfer teknologi tepat guna dan penyerahan alat pengering otomatis sehingga masyarakat dapat memanfaatkan teknologi tersebut secara langsung untuk meningkatkan kualitas produksi kerupuk kemplang. Hasil evaluasi menunjukkan bahwa kegiatan sosialisasi dan penyerahan alat pengering otomatis dimanfaatkan dengan baik dan bermanfaat bagi masyarakat.

Improvement of Hardness of Hydroxyapatite by the Addition of Silica from Tin Tailings Fitri Afriani; Evi J; Zaitun; Yuant Tiandho
Journal of Engineering and Scientific Research Vol. 2 No. 2 (2020)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

The application of bone scaffolding in bone therapy is an alternative solution developed in bone tissue engineering technology to avoid bone donors' scarcity. The main requirement for a material that can be used as a scaffold is that it is biocompatible. Hydroxyapatite is a calcium phosphate ceramic that is often used as the primary material for scaffolding because it has good biocompatibility properties. However, like most ceramics, hydroxyapatite has low mechanical properties. In this study, we synthesized hydroxyapatite from cockleshell waste. To improve hydroxyapatite's mechanical properties (hardness), we added silica from tin tailings to hydroxyapatite. Through the analysis of the x-ray diffraction (XRD) pattern, it was found that hydroxyapatite was successfully synthesized from cockleshell using the co-precipitation method. Analysis of the diffraction pattern of tin tailings also shows that most of the crystals comprising tin tailings sand are silica in the ?-quartz phase. The addition of silica to hydroxyapatite followed by compaction and sintering at a temperature of 800 ? did not produce a new crystal phase. The addition still has a diffraction pattern consisting of a combined XRD pattern of hydroxyapatite and silica. Based on the hardness test using the Vickers hardness method, it is known that the addition of silica can increase the hardness of hydroxyapatite.

Removing BOD, COD, and Decolorization of Batik Cual Wastewater using Fenton Mechanism Rika Favoria Gusa; Diana Novita Sari; Fitri Afriani; Wahri Sunanda; Yuant Tiandho
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10, No 1 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

During the production of batik cual, thick-colored wastewater is produced. Unfortunately, the wastewater could damage the environment if it is disposed of without specific processing. The Fenton method is an advanced oxidation process (AOPs) that can degrade organic dyes found in liquid waste. In this research, the researchers studied the Fenton mechanism's application to the batik cual wastewater treatment. The Fenton's reagent used was H2O2 with FeSO4.7H2O. Some of the experimental wastewater treatment parameters were the values of biological oxygen demand (BOD), chemical oxygen demand (COD), the degradation efficiency of difficult to decompose organic materials, and the color degradation efficiency in batik cual wastewater. The results show that the Fenton mechanism’s efficiency of removing color from batik cual wastewater is up to 97.8%, COD and BOD removal efficiencies are 76.3% and 75.2%, and the degradation efficiency of difficult to decompose organic matter is 76.8%. Also, the researchers found that the higher amounts of FeSO4.7H2O increase the removal parameters effectiveness. Therefore, the Fenton mechanism can effectively improve the quality of wastewater in batik cual production.

MODIFIKASI DISTRIBUSI MUATAN BERDASARKAN DISTRIBUSI FERMI-DIRAC DAN APLIKASINYA PADA HUKUM GAUSS Yuant Tiandho; Okky Maryana; Fitri Afriani; Asep Saefullah; Indra Pardede
JST (Jurnal Sains dan Teknologi) Vol. 9 No. 2 (2020)
Publisher : Universitas Pendidikan Ganesha

ANALYSIS OF INFLUENCE OF ACTIVATOR CONCENTRATION ON CHARACTERISTICS OF ACTIVATED CARBON FROM KETAPANG SHELL (Terminalia Catappa) BASED ON IMAGE PROCESSING METHOD Herman Aldila; Megiyo Megiyo; Fitri Afriani; Yuant Tiandho
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 6, No 1 (2018)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Activated carbon from ketapang shell (Terminalia Catappa) has been successfully synthesized using dehydration-carbonization method. Activated carbon was conducted by immersing with sulphuric acid and followed by carbonization at 600oC for 2 hours. Pore characteristics were determined using imageprocessing methods of activated carbon micrographs based on parameters of area and caliper length. From the area approximation method obtained that the maximum pore size estimate was 5,69 μm at activator concentration 3% while the minimum was 4,88 μm at activator concentration 11% activator concentration respectively. At the other hands, caliper length approximation method obtained estimation of maximum pore size that was equal to 9,09 μm at activator concentration 3% and its minimum that was equal to 7,35 μm at activator concentration 7%. The porosity of the activated carbon from ketapang shell increased with the increase of sulfuric acid concentration and the highest value reached 24.96%.

PERANCAH TULANG BERBASIS KOMPOSIT HIDROKSIAPATIT/SILIKA MELALUI METODE 3D-PRINTING: SEBUAH KAJIAN NARATIF Evi . J; Siska Oktaviyani; Mahjur Mahjur; Fitri Afriani
JOURNAL ONLINE OF PHYSICS Vol. 6 No. 1 (2020): JOP (Journal Online of Physics) Vol 6 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v6i1.10598

Bone scaffolding is an alternative solution developed to assist the bone therapy process. One of the materials with good biocompatibility and can be applied as a scaffold is hydroxyapatite (HAp). The development of HAp/silica composites aims to improve various characteristics of pure HAp-based scaffolding. In this article, a narrative review is conducted regarding the use of cockle shells as a source of calcium in the synthesis of HAp and tin tailings sand as a silica source. Various HAp synthesis and silica purification methods were compared to obtain the optimal HAp/silica composites method. Furthermore, this article also describes the potential use of 3D-printing technology in scaffolding fabrication. It is because 3D-printing technology has a promising prospect for producing scaffolding with complex structures precisely, efficiently, and quickly to meet patient needs. Also, we explained the challenges of applying 3D-printing technology to provide input for related research in the future.

Co-Authors Andrian Saputra Anisa Indriawati Asep Saefullah Asep Saefullah Diana Novita Sari Evi . J Evi J Evi J Evi.J Evi.J Evi.J Evi.J Fadillah Ramadhani Herman Aldila Indra Pardede Jefri Akbar Kumalasari Kumalasari Kumalasari Kumalasari Lizia Miratsi Lizia Miratsi Mahjur Mahjur Mahjur Mahjur Maryana, Okky Megiyo Megiyo Megiyo Megiyo Muntaz Soraya Mustari Mustari Nur Hamrin Okky Maryana Rahmad Lingga Ramli Ramli Rena Aprilianti Rifqi Almusawi Rafsanjani Rifqi Almusawi Rafsanjani Rika Favoria Gusa Robby Gus Mahardika Rospita Sari Sandi Sandi Sari Wulan Siska Oktaviyani Siska Oktaviyani Siswoyo Siswoyo Sito Enggiwanto Susanti Susanti Tri Kusmita Wahri Sunanda Widodo Budi Kurniawan Yekti Widyaningrum Yekti Widyaningrum Yohandri Yuant Tiandho Yulkifli Yulkifli Yunita Febriani Zaitun Zalva Humaeroh

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