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All Journal Jurnal Ilmu Dasar BERKALA SAINSTEK Jurnal Sains dan Teknologi Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran JFA (Jurnal Fisika dan Aplikasinya) UNEJ e-Proceeding Jurnal Fisika FLUX Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Spektra: Jurnal Fisika dan Aplikasinya Warta Pengabdian Jurnal Ilmu Fisika Indonesian Physical Review Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Dedikasi: Jurnal Pengabdian kepada Masyarakat JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) Newton-Maxwell Journal of Physics Sewagati InSTEM Jurnal Sains Materi Indonesia Journal of Electronics and Instrumentation
Wenny Maulina
Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Influence of Hydrothermal Temperature on the Physical Characteristics and Photocatalytics Activity of TiO2 for Degradation of Amoxicillin Sutisna Sutisna; Rija Rizqi Maulana; Wenny Maulina; Sujito Sujito; Nindha Ayu Berlianti; Edy Wibowo
Jurnal Sains Materi Indonesia Vol. 26 No. 1 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.2051

Abstract

Titanium dioxide (TiO2) is a photocatalyst material widely used for environmental remediation applications. In this research, TiO2 material was synthesized using the hydrothermal method at various temperatures (150°C, 180°C, and 200°C). Based on the Fourier-transform infrared (FTIR) data, it was found that all the synthesized materials showed similar absorption peaks, and Ti-O-Ti bonds were detected, which is a characteristic of TiO2. X-ray diffraction (XRD) analysis showed that all the synthesized materials were TiO2 anatase with different crystalline sizes. The synthesized TiO2 using the hydrothermal temperature of 180°C showed the smallest crystalline size of 86.81 nm. Based on the analysis of the band gap energy, it was found that wider band gap energy was obtained at higher hydrothermal temperatures. The band gap energies of the synthesized materials are 3.18 eV, 3.19 eV, and 3.21 eV for hydrothermal temperatures of 150°C, 180°C, and 200°C, respectively. The photocatalytic activity of the three synthesized materials was tested in the photodegradation experiment of amoxicillin under ultraviolet (UV) irradiation. As a result, it was found that TiO2 synthesized at 180°C has the highest photocatalytic activity by degrading 100% of amoxicillin compounds within 120 minutes.
Klasifikasi Tangisan Bayi Menggunakan Parameter Pitch Dengan K-Nearest Neighbors Ainayya Halifah; Agung Tjahjo Nugroho; Wenny Maulina
Journal of Electronics and Instrumentation Vol. 1 No. 2 (2024)
Publisher : Fakultas MIPA, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jei.v1i2.880

Abstract

Baby crying is a basic and important thing for mothers or caregivers to understand. In general, young mothers who do not receive guidance from experienced people, usually interpret baby crying as a sign of hunger only, even though crying in babies has different meanings or types of crying depending on the trigger/cause of crying. This study was conducted to establish the characteristics of the cause of infant crying through pitch parameters formed in the Bag of Features and determine the accuracy of the resulting classification. The feature extraction and classification methods used in this research are pitch, Bag of Features and K-Nearest Neighbor. Pitch feature extraction is done by changing the range parameters and methods in estimating the fundamental frequency. The range and method used in this research are (70,170) and PEF. The baby cries used for this study were taken in two ways, namely downloading Dunstan Baby Language and field measurements based on the perception of mothers and medical personnel. The types of infant cries used in this study were burpme, hungry, lower wind pain, tired, uncomfortable and pain. The results of this study show that the sequence of DBL baby cry labels that have a high average fundamental frequency probability value based on the Bag of Features histogram are tired (0.290), lower wind pain (0.207), hungry (0.206), burpme (0.182) and uncomfortable (0.090) while the sequence of baby cry labels from measurement data shows that the sick label has a higher average fundamental frequency, which is 0.200 when compared to the hungry label whose average fundamental frequency is 0.064. The classification accuracy results obtained between the DBL database test and the measurement database using K-Nearest Neighbor look optimal, which is 92% and 98%.
Efek Penambahan Protaktinium-231 (Pa-231) pada Nilai Faktor Multiplikasi Efektif Reaktor PWR Berbahan Bakar ThN-U233N Ratna Dewi Syarifah; Meirita Dwi Afriani; Wenny Maulina; Fajri Prasetya
Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) Vol 7 No 2 (2023): Jurnal Ilmu Fisika dan Pembelajarannya (JIFP)
Publisher : Program Studi Pendidikan Fisika, UIN Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/jifp.v7i2.19159

Abstract

This study aims to determine the optimum percentage of addition of protactinium-231 in a ThN-U233N fueled PWR reactor.In ThN-U233N, uranium-233 is used as the fissile material. Pa-231 as burnable poisson is added to ThN-U233N fuel to reduce the keff value. In this research conducted benchmarking keff values ​​of OpenMC and SRAC codes, homogeneous and heterogeneous core configurations, and the addition of Pa-231 in ThN-U233N fuel. Neutronic analysis was performed using the OpenMC code. In the homogeneous core configuration, the enrichment percentage of U-233 is varied by 1%-15%. Meanwhile, the heterogeneous core configuration uses 3 variations of ring geometry and fuel. The results of the benchmarking of the OpenMC and SRAC code keff values ​​show a maximum error of 1,906%. The homogeneous core configuration produces the optimum value for U-233 enrichment of 3%. Meanwhile, the optimum value of the heterogeneous core configuration is achieved in ring geometry F1 = F2 = F3 = 3 rings with enrichment of U-233 at F1 = 0,5%, F2 = 3%, F3 = 5,5% and addition of Pa-231 of 1.5%. The optimum calculation results has an excess reactivity value 8.37%.
Pemanfatan Teknologi Trash Can-Composter (TCC) Berbasis Zero Waste dalam Pengolahan Sampah Organik Penghasil Kompos Amini, Helda Wika; Syarifah, Ratna Dewi; Maulina, Wenny; Shofa, Ghaitsa Zhahira; Sholihah, Athaya Farras; Prasetyani, Tiana Febrianti Eka; Ma'rifah, Binti Ni'matul
Sewagati Vol 8 No 1 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i1.821

Abstract

Desa Tanah Wulan menjadi sasaran dalam menerapkan gagasan terletak di Kecamatan Maesan, Kabupaten Bondowoso, Provinsi Jawa Timur. Ketertarikan dalam menerapkan gagasan ini karena faktor dari Desa Tanah Wulan tidak memiliki fasilitas tempat pembuangan akhir (TPA), tempat pembuangan sampah (TPS), bahkan sebagian penduduk yang tidak memiliki tempat sampah memadai di rumah karena tingkat ekonomi dan kesejahteraan yang masih rendah. Permasalahan tersebut memicu penduduk membuang sampah rumah tangga ke lahan kosong, sungai, dan dibakar. Selain itu, penduduk dengan mayoritas mata pencarian sebagai petani, ketika musim panen penduduk serempak membuang sampah jerami dengan cara dibakar. Penduduk belum menyadari manfaat sampah organik. Melihat permasalahan Desa Tanah Wulan, dibuatlah alat yang mendukung agar digunakan oleh para penduduk dalam membuat pupuk kompos organik. Kegiatan pengabdian meliputi (1) kaderisasi ibu rumah tangga; (2) sosialisasi manajemen sampah, (3) sosialisasi cara pembuatan pupuk kompos dan praktek penggunaan alat TCC, (4) evaluasi. Hasil pengabdian ini adalah adanya 13 ibu rumah tangga yang bergabung pada program ini sebagai sebagai kader peduli lingkungan yang diketuai oleh Ibu Asnawati. Selanjutnya ibu-ibu telah memahami cara pemilahan sampah dan mampu memanfaatkan sampah organik menjadi kompos dengan bantuan alat Trash Can Composter (TCC).
Penggunaan Trash Can-Composter (TCC) Untuk Pengolahan Sampah Organik Dan Penghasil Kompos Bagi Warga Desa Tanah Wulan, Bondowoso Wika Amini, Helda; Syarifah, Ratna Dewi; Maulina, Wenny; Shofa, Ghaitsa Zhahira; Sholihah, Athaya Farras; Prasetyani, Tiana Febrianti Eka; Ma'rifah, Binti Ni'matul; Setiawan, Dimas Arif; Syaifullah, Rangga Yudha
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 2 (2024): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v4i2.313

Abstract

Have been done for assistance in waste processing using a trash can-composter (TCC) machine and making compost provided to the residents of Tanah Wulan Village, Maesan District, Bondowoso. This service activity is carried out with the aim of providing education to the community regarding good waste management and recycling waste to be used as a compost planting medium. Through this service activity, the person running this program, called kader ibu-ibu rumah tangga (IRT), was formed in Tanah Wulan Village, chaired by Ibu Asnawati as the leader of the Waste Management. Waste from household waste and harvest residues, such as vegetable waste, straw and rice husks, is chopped using a TCC machine. The chopped results are mixed with cow dung, sawdust and EM4 starter to get useful compost. The content of the compost produced is tested and ready to be applied to plants.Keywords: Trash can-composter, organic waste, compost
Study of Dielectric and Adsorption Properties of Activated Carbon Prepared from Water Hyacinth using KOH as an Activating Agent Ghiffari, Mochammad; Maulina, Wenny; Nugroho, Agung Tjahjo
Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 1 (2020): May
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v3i1.26417

Abstract

Activated carbon can be produced from the combustion of a materials containing carbon that has been activated using activator substances. In this paper, potassium hydroxide (KOH) was selected as an activating agent. The influence of KOH concentration was investigated to determine the dielectric and adsorption properties of activated carbon derived from water hyacinth. Drying water hyacinth was carbonize in the furnace at a temperature of 400°C followed by chemical activation with variation concentration of KOH solution that used are 25%, 30%, and 35% (w/v) respectively. The results show that the best activated carbon derived from water hyacinth was obtained using 35% (w/v) KOH solution as an activating agent with the dielectric constant is 4,04 while iodine number of 514,6 mg/g.
Characterization of Carbon Derived from Water Hyacinth as a Renewable Energy Sources Kusumaningtyas, Rani; Maulina, Wenny; Supriyadi, Supriyadi
Computational And Experimental Research In Materials And Renewable Energy Vol 1 No 1 (2018): November
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v1i1.19543

Abstract

An alternative renewable energy sources, such as biomass, can be produced using the combustion process inside the furnace. In this work, carbon derived from water hyacinth be produced through carbonization process. The carbonization of water hyacinth was carried out at different temperature i.e. 400°C, 500°C and 600°C and subsequently analyzed with the SEM-EDX to determine the microstructure and atomic percentage of present elements. While the FTIR analysis was conducted to qualitatively verify the surface functional groups of carbon. The results of SEM-EDX analysis showed that the pores began to form at a carbonization temperature of 600°C and carbon content increased with increased temperature of carbonization process. FTIR analysis results showed that the functional groups in the carbon derived from water hyacinth had an absorption pattern with OH, C-H, C-O, and C=C bonds.
Improving the Economy of the Home Furniture Industry in Sugerkidul Village - Jember through Appropriate Technology Misto; Endhah Purwandari; Artoto Arkundato; Wenny Maulina; Arry Y. Nurhayati
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 1 No. 1 (2023): Mei
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v1i1.361

Abstract

Furniture (chairs, beds, sideboards and so on) are items needed by every household that potential to be cultivated as a livelihood. Some of the basic materials for making furniture products are available locally (village) and some come from the city. Techniques for making furniture products such as how to make wooden frames, cut furniture cloth or leather, sew furniture fabrics, and the process of assembling and combining them into a furniture product must be owned by furniture workers, in order to open a furniture business. In addition to the technical skills that must be possessed, the required equipment such as tools, sewing machines and so on must also be owned for this furniture business to be successful. Some of the difficulties of Jelbuk furniture entrepreneurs are that they do not have enough skills to sew and do not have a sewing machine. If there is sewing work, it is always given to another party whose existence is 20 km from Jelbuk. This is what makes Jelbuk entrepreneurs less economically empowered. Therefore, the purpose of carrying out this activity is to provide guidance on sewing techniques and procurement of sewing machines as an alternative solution for these furniture entrepreneurs. This activity was carried out in several stages, namely 1) procuring sewing machines that were tailored to the needs of making a furniture product, 2) providing guidance on sewing techniques, and 3) training on techniques for making fashion furniture products according to consumer tastes. Guidance on sewing techniques is given starting from getting to know the sewing machine and its characteristics as well as sewing guidance to make a simple product to the details. The results of the community service activities are enough to help improve the ability of sewing techniques so that all pron products can be done at their own place without having to be given to other parties, so that the completion is faster and more cost efficient. The guidance process is still given for 3 months until it is completely independent. The ability of furniture entrepreneurs increases, the settlement process is faster, the number of consumers increases and will ultimately increase the income of furniture entrepreneurs in Suger Kidul Village, Kec. Jelbuk, Kab. Jember.
Effects of Carbonization Temperature from Activated Carbon of Water Hyacinth on the Flux and Its Ability on Iron Removal Maulina, Wenny; Priyanto, Frendi Wahyudi; Arkundato, Artoto
Jurnal ILMU DASAR Vol 24 No 1 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v24i1.30710

Abstract

The synthesis of activated carbon derived from water hyacinth has been successfully carried out as an iron adsorbent in a laboratory-scale water filter design system. In this article, activated carbon derived from water hyacinth is made through a carbonization process at 400°C and 500°C with NaOH as an activating agent. This activated carbon derived from water hyacinth acts as a filter media for purifying well water by assessing the flux, pH and iron removal efficiency before and after filtration. The results showed that the use of activated carbon derived from water hyacinth with a carbonization temperature of 500°C resulted in a water flux value greater than the carbonization temperature of 400°C. The pH value showed no difference between the use of activated carbon derived from water hyacinth (at a carbonization temperature 400°C and 500°C) before and after the filtration process, which was 7.5. Meanwhile, the effectiveness of activated carbon derived from water hyacinth at a carbonization temperature of 500°C as a filtration medium is more optimal in reducing iron levels compared to the use of activated carbon at a carbonization temperature of 400°C with percentage efficiency up to 98.09%.
Rancang Bangun Indoor Positioning System berbasis Wireless Smartphone menggunakan Teknik Global Positioning System dengan Metode Absolut Jamaluddin, J.; Nugroho, Agung Tjahjo; Maulina, Wenny
BERKALA SAINSTEK Vol 7 No 1 (2019)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v7i1.9914

Abstract

Indoor Positioning System (IPS) merupakan teknologi informasi untuk menentukan posisi objek di dalam ruangan berbasis wireless smartphone. Perangkat yang digunakan dalam penelitian ini adalah empat unit smartphone, satu smartphone sebagai transmitter, dan tiga smartphone lainnya sebagai receiver. Tujuan penelitian ini adalah mendapatkan model dan tingkat akurasi dari IPS berbasis wireless smartphone menggunakan teknik Global Positioning System (GPS) dengan metode absolut. Penelitian ini dilakukan dengan membuat dua model IPS dan melakukan pengukuran intensitas sinyal Wi-Fi berdasarkan masing-masing model IPS yang telah dibuat untuk mendapatkan persamaan linier antara jarak dan intensitas sinyal Wi-Fi. Persamaan linier yang didapatkan dari model IPS digunakan untuk menentukan jarak antara receiver dan transmitter berdasarkan intensitas sinyal Wi-Fi yang terukur pada saat pengujian model, kemudian informasi jarak tersebut digunakan untuk menentukan posisi objek (transmitter). Hasil penelitian menunjukkan bahwa Model 1 IPS berbasis wireless smartphone mampu mengestimasi posisi dengan rata-rata tingkat kesalahan mencapai 4,46 m dan tingkat akurasinya mencapai 76,51%. Model 2 IPS mampu mengestimasi posisi dengan rata-rata tingkat kesalahan 9,68 m dengan tingkat akurasinya mencapai 49,03%. Berdsarakan hasil tersebut, dapat disimpulkan bahwa model 1 IPS memiliki tingkat akurasi yang lebih baik untuk mengestimasi posisi objek daripada model 2 IPS. Kata Kunci: Global positioning system (GPS), indoor positioning system (IPS), wireless smartphone.
Co-Authors Agung Tjahjo Nugroho Ainayya Halifah Arry Y. Nurhayati Arry Y. Nurhayati, Arry Y. Arry Yuariatun Nurhayati Artoto Arkundato Binti Istikomatul Isrofiyah Binti Istikomatul Isrofiyah Edy Wibowo Eka Yulia Salsabiilah Endhah Purwandari Fajri Prasetya Fanta, Ryo Firda Fadri Gaguk Jatisukamto Ghiffari, Mochammad Habibah, Putri Sifa Helda Wika Amini Hidayat, Umar Sahiful Ismia Khilmi Fauzia Jamaluddin, J. Karomah, Iklimatul Kusumaningtyas, Rani Lutfi Rohman Ma'rifah, Binti Ni'matul Maulana, Rija Rizqi Meirita Dwi Afriani Misto Misto Misto Mohammad Ali Shafii Nindha Ayu Berlianti Prasetyani, Tiana Febrianti Eka Priyanto, Frendi Wahyudi Rija Rizqi Maulana S. Sujito Setiawan, Dimas Arif Shofa, Ghaitsa Zhahira Sholihah, Athaya Farras Sujito Sujito Sukmawati, Nissa Supriyadi Supriyadi Supriyadi Supriyadi Sutisna Sutisna Sutisna Sutisna Syah, Khalif Ardian Syaifullah, Rangga Yudha Syarifah, Ratna Dewi Totok Wicaksono Trianti, Nuri Widiasih Wika Amini, Helda Yuda Cahyoargo Hariadi Yudi Aris Sulisitiyo