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EFEKTIVITAS METODE ALGEBRAIC RECONSTRUCTION TECHNIQUE UNTUK SISTEM KOORDINAT POLAR DAN RECTANGULAR PADA TOMOGRAFI KAPASITANSI Wahidiyah, Farah; Purwandari, Endah; Hariadi, Yuda Cahyoargo; Taruno, Warsito P
BERKALA SAINSTEK Vol 1, No 1 (2013)
Publisher : My Home

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Tomografi kapasitansi merupakan salah satu teknologi tomografi yang banyak dikembangkan dalam dunia industri, khususnya untuk keperluan kontrol pipa minyak, pencampuran dua zat kimia, maupun pemrosesan hidrokarbon. Tomografi kapasitansi memiliki kecepatan scanning yang sangat tinggi, sehingga jumlah proyeksi atau pengukuran untuk keperluan rekonstruksi citra akan sangat terbatas. Oleh sebab itu metode ART dapat menjadi pilihan untuk perbaikan kualitas citra hasil rekonstruksi. Namun demikian, kesesuaian metode ini dengan geometri obyek yang akan dicitrakan perlu diperhatikan untuk mendapatkan hasil rekonstruksi maksimal. Dalam penelitian ini kegiatan pengambilan data tomografi dilakukan dengan simulasi COMSOL Multiphysics dan proses rekonstruksi menggunakan bahasa pemrograman MATLAB. Dengan melihat kualitas citra dan nilai korelasi citra yang dihasilkan, sistem koordinat polar memberikan hasil yang lebih baik dari pada sistem koordinat rectangular untuk proses rekonstruksi menggunakan metode ART. Nilai korelasi citra yang dihasilkan pada iterasi 100 ialah sebesar 0,266 untuk sistem koordinat polar dan 0,208 untuk sistem koordinat rectangular.

INVESTIGASI ALGORITMA PARAMETER INPUT NON ITERATIF DALAM ART DAN SIRT PADA TOMOGRAFI LINEAR Novianto, Melandi Jefri Agus; Purwandari, Endah; Hariadi, Yuda Cahyoargo; Taruno, Warsito P
BERKALA SAINSTEK Vol 1, No 1 (2013)
Publisher : My Home

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.557 KB)

Computed Tomography telah digunakan dalam dunia medis untuk memetakan kerapatan jaringan suatu obyek berdasarkan intensitas penyerapannya terhadap energi Sinar-X. Terbatasnya data proyeksi yang diperoleh akibat keterbatasan waktu penyinaran yang dilakukan, menyebabkan perlunya sebuah metode rekonstruksi yang mampu bekerja dengan data proyeksi yang terbatas. Dalam hal ini, digunakan metode ART dan SIRT sebagai metode perekonstruksi. Untuk meningkatkan efektivitas hasil rekonstruksi sebuah obyek, perlu dilakukan modifikasi terhadap parameter rekonstruksi menjadi bersifat non iteratif. Dalam penelitian ini, matriks beban dibuat dengan memanfaatkan fungsi imrotate dan reshape untuk seluruh variasi sudut proyeksi yang digunakan. Hasil rekonstruksi terbaik diperoleh pada sudut proyeksi 15o. Jika dibandingkan dengan SIRT, ART memiliki kecepatan tinggi untuk mencapai konvergensi nilai error pada iterasi pertama sebesar 9,03%. Adapun SIRT mencapai nilai error yang konvergen pada iterasi ke 100 sebesar 14,98%. Dengan demikian ART dapat menjadi pilihan dalam proses rekonstruksi citra pada tomografi linier dengan menggunakan parameter perekonstruksi yang bersifat non iteratif.

ENHANCEMENT OF THE NUTRITIONAL AND INCOME OF THE MRAWAN VILLAGE COMMUNITY THROUGH ECO-FRIENDLY QUAIL POULTRY LIVESTOCK AT LOW COST Wenny Maulina; Yuda Cahyoargo Hariadi; Arry Yuariatun Nurhayati; Misto Misto
UNEJ e-Proceeding 2022: E-Prosiding Kolokium Hasil Penelitian dan Pengabdian kepada Masyarakat
Publisher : UPT Penerbitan Universitas Jember

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The yard can provide great benefits for the community, because it can be planted with vegetables, fruits and spices such as turmeric, lemongrass, etc. The yard can also be used as a source of animal protein and an additional source of family income. Quail farming is an alternative for producing eggs which is quite productive in addition to laying hens and ducks. The advantages of quail cultivation are having a small body size and weighing about 130 grams, a short life cycle, high egg productivity (in the peak period of daily egg production it can produce about 90% of the total population in the cage), low feed intake (about 20 grams/quail/day), easy to cultivate and does not require a high investment. Quail can give results in the form of daily egg production and/or meat from rejected quail (quail that have stopped laying eggs or egg productivity that begins to decline after about 8 months of age). Quail cultivation from the yard of the house can be used to maintain approximately 25 quails. Based on these advantages, quail cultivation in the yard can provide family income and increase nutrition. Keywords: quail, yard, nutritional, income

Measuring The Amount Of Ammonia Gas In Cattle Using The MQ137 Sensor In Rawan Village, Mayang District, And Member District With The Goal Of Raising Public Health Standards Misto; Tri Mulyono; Imam Rofi’i; Arry Yuariatun Nurhayati; Yuda Cahyoargo Hariadi; Linggar Ayu Octaviani
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 2 No. 1 (2024): 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.v2i1.757

The majority of the farmers in Pringtali Hamlet, Mayang Village, Jember Regency, are also cattle breeders. Cattle breeders make up the majority of farmers. They construct basic cow enclosures; the majority are joined to the home, while others are independent. For the two of them, the cage's quality does not match the standards for cleanliness. Even in cages attached to the home, the smell of cow poo can be detected up to three meters outside the cage and within the main house. Ammonia is often the gas that is released from either liquid or solid cow manure. This gas can have some negative effects on health; in fact, it can irritate respiratory blood vessels in those 60 years of age and older. Because ammonia gas from cages has not been handled adequately, the living environment is contaminated. The goal of our service is to measure the threshold level of ammonia gas surrounding the cage (using the MQ-135 sensor) in order to ascertain whether the cage is ecologically friendly and healthy. Two cow pens one adjacent to a domestic main house in Pringtali Hamlet and the other from a separate traditional pen have had measurements taken. By monitoring liquid excrement drainage channels and promoting air circulation around the cage, the measurements seek to maintain the cleanliness of the cage environment and the management of ammonia gas content. Cage management so that the livestock community can improve the cleanliness of the living environment.

The Application of Cows Rumen for Electricity Generation Through The Implementation of A Ceramic-Based Microbial Fuel Cell System Mulyono, Tri; Hutamia, Diah Meirendi; Rofi’i, Imam; Misto, M.; Nugroho, Agung Tjahjo; Hariadi, Yuda Cahyoargo
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.44448

The growth in population is not adequately matched by the corresponding increase in energy demand. The imperative for prioritizing the exploration of alternative energy sources that possess attributes of safety, affordability, and ample access to raw materials cannot be overstated. An energy source with significant potential is a microbial fuel cell (MFC)-based energy source. This study aims to investigate the utilization of cow rumen as a substrate and source of nutrition in the bioenergy system of microbial fuel cells (MFCs). The present study aims to investigate the impact of substrate concentration and bacterial incubation duration derived from bovine rumen bacteria on the attainment of optimal power density. The research employed a Dual Chamber Microbial Fuel Cell (MFC) device using a Proton Exchange Membrane (PEM) constructed from ceramic materials. Daily observations were conducted over a period of 30 days. The performance of MFC was assessed utilizing the polarization technique. The findings indicated that altering the proportion of bovine rumen bacterial substrates and the duration of bacterial incubation had an impact on the power density seen in the Microbial Fuel Cell (MFC) system. The optimal conditions were attained when the substrate concentration reached 3640 ppm and after 7 days, resulting in a maximum power density of 864 mW/m2.

INVESTIGASI ALGORITMA PARAMETER INPUT NON ITERATIF DALAM ART DAN SIRT PADA TOMOGRAFI LINEAR Novianto, Melandi Jefri Agus; Purwandari, Endah; Hariadi, Yuda Cahyoargo; Taruno, Warsito P
BERKALA SAINSTEK Vol 1 No 1 (2013)
Publisher : Universitas Jember

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

Computed Tomography telah digunakan dalam dunia medis untuk memetakan kerapatan jaringan suatu obyek berdasarkan intensitas penyerapannya terhadap energi Sinar-X. Terbatasnya data proyeksi yang diperoleh akibat keterbatasan waktu penyinaran yang dilakukan, menyebabkan perlunya sebuah metode rekonstruksi yang mampu bekerja dengan data proyeksi yang terbatas. Dalam hal ini, digunakan metode ART dan SIRT sebagai metode perekonstruksi. Untuk meningkatkan efektivitas hasil rekonstruksi sebuah obyek, perlu dilakukan modifikasi terhadap parameter rekonstruksi menjadi bersifat non iteratif. Dalam penelitian ini, matriks beban dibuat dengan memanfaatkan fungsi imrotate dan reshape untuk seluruh variasi sudut proyeksi yang digunakan. Hasil rekonstruksi terbaik diperoleh pada sudut proyeksi 15o. Jika dibandingkan dengan SIRT, ART memiliki kecepatan tinggi untuk mencapai konvergensi nilai error pada iterasi pertama sebesar 9,03%. Adapun SIRT mencapai nilai error yang konvergen pada iterasi ke 100 sebesar 14,98%. Dengan demikian ART dapat menjadi pilihan dalam proses rekonstruksi citra pada tomografi linier dengan menggunakan parameter perekonstruksi yang bersifat non iteratif.

EFEKTIVITAS METODE ALGEBRAIC RECONSTRUCTION TECHNIQUE UNTUK SISTEM KOORDINAT POLAR DAN RECTANGULAR PADA TOMOGRAFI KAPASITANSI Wahidiyah, Farah; Purwandari, Endah; Hariadi, Yuda Cahyoargo; Taruno, Warsito P
BERKALA SAINSTEK Vol 1 No 1 (2013)
Publisher : Universitas Jember

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

Tomografi kapasitansi merupakan salah satu teknologi tomografi yang banyak dikembangkan dalam dunia industri, khususnya untuk keperluan kontrol pipa minyak, pencampuran dua zat kimia, maupun pemrosesan hidrokarbon. Tomografi kapasitansi memiliki kecepatan scanning yang sangat tinggi, sehingga jumlah proyeksi atau pengukuran untuk keperluan rekonstruksi citra akan sangat terbatas. Oleh sebab itu metode ART dapat menjadi pilihan untuk perbaikan kualitas citra hasil rekonstruksi. Namun demikian, kesesuaian metode ini dengan geometri obyek yang akan dicitrakan perlu diperhatikan untuk mendapatkan hasil rekonstruksi maksimal. Dalam penelitian ini kegiatan pengambilan data tomografi dilakukan dengan simulasi COMSOL Multiphysics dan proses rekonstruksi menggunakan bahasa pemrograman MATLAB. Dengan melihat kualitas citra dan nilai korelasi citra yang dihasilkan, sistem koordinat polar memberikan hasil yang lebih baik dari pada sistem koordinat rectangular untuk proses rekonstruksi menggunakan metode ART. Nilai korelasi citra yang dihasilkan pada iterasi 100 ialah sebesar 0,266 untuk sistem koordinat polar dan 0,208 untuk sistem koordinat rectangular.

Heavy Metal Toxicity of Pb in the Organs of Nile Tilapia (Oreochromis Niloticus) in the Watershed Due to Hospital Waste Nindha Ayu Berlianti; Yuda Cahyoargo Hariadi; Arry Yuariatun Nurhayati; Wenny Maulina; Firda Fadri
JST (Jurnal Sains dan Teknologi) Vol. 13 No. 3 (2024): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v13i3.84865

The toxicity levels of heavy metals accumulated in water and sediment due to hospital waste discharge not only impact the environment but also pose a significant threat to human health. Long-term accumulation of these metals in the body may lead to degenerative diseases such as cancer. This concern highlights the urgency of conducting laboratory-based experimental research to identify the distribution of heavy metals in aquatic environments caused by hospital waste. The study employs Nile tilapia (Oreochromis Niloticus) as a bioindicator, a species capable of absorbing metals through its tissues. The research subjects consisted of 35 Nile tilapia with a body length of 8–12 cm and a weight of 12–15 grams, alongside hospital waste samples collected from three discharge points. Data collection methods included sample preparation of both hospital waste and Nile tilapia, treatment with varying concentrations of lead nitrate (Pb(NO3)2), and maintenance durations of 7, 14, 21, and 28 days. The concentration of Pb in the gills and muscle tissue of the fish was measured using Atomic Absorption Spectroscopy (AAS). The analytical data, represented as heavy metal concentrations, were plotted on a graph showing the relationship between concentration variations and maintenance durations and analyzed using One-Way ANOVA with nonparametric Tukey's test. The analysis revealed that the highest Pb concentration was observed in the gills of Nile tilapia on day 28 at 1.57 ppm, while the Pb concentration in muscle tissue reached 0.25 ppm on day 21. According to BPOM standards, Pb levels in Nile tilapia muscle tissue remain within the safe consumption threshold (≤0.3 ppm), whereas Pb levels in the gills exceeded the tolerance limit. This study provides scientific evidence on the risks of heavy metal accumulation in aquatic biota due to hospital waste and underscores the importance of improved waste management practices to safeguard public health and the environment.

The Effect of Adding Variations in the Combination of Anthocyanin Extract and Curcumin Volume Fraction on the Mechanical Properties and Biodegradability of Seaweed-Based Bioplastic Materials Rahmah, Nuzulul; Sujito; Hariadi, Yuda Cahyoargo
Jurnal Penelitian Pendidikan IPA Vol 11 No 4 (2025): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i4.9769

The environmental issues caused by conventional plastic waste are becoming increasingly serious, driving the development of more eco-friendly bioplastics. This study examines the mechanical properties, solubility, and biodegradability of seaweed-based bioplastics with the addition of curcumin and anthocyanin as additives. The results indicate that bioplastics containing only anthocyanin exhibit the best tensile strength (3.78 ± 0.26 MPa) and elasticity (12.48 ± 0.49 MPa). In contrast, bioplastics containing only curcumin show the lowest mechanical properties. The addition of anthocyanin enhances tensile strength and elasticity through the formation of strong hydrogen bonds with seaweed polymers, whereas curcumin decreases mechanical properties due to less stable molecular interactions. In terms of solubility, anthocyanin recorded the highest value (72.04%), while curcumin had the lowest (37.61%) due to its lower water stability. Regarding biodegradability, the combination of anthocyanin (1.25%) and curcumin (3.75%), as well as pure curcumin (5%), showed the highest degradation rates, whereas a balanced mixture (2.5%:2.5%) exhibited the lowest biodegradability. In conclusion, anthocyanin improves the mechanical properties and solubility of bioplastics, while curcumin supports biodegradability. Seaweed-based bioplastics with added curcumin and anthocyanin show potential as eco-friendly antibacterial materials.

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