Sintesis dan Karakterisasi Nanopartikel TiO2, Al, dan Zn dengan Metode Hydrothermal
(M Samsuri, Hernowo Widodo, Retno Wulandari, Erlambang Yogaswara Gusti Putra, Inul Lestari Farida, Vika Shalsa Ramadhania, Eddy Nana Priyatna)
DOI : 10.24246/juses.v8i1p1-6
- Volume: 8,
Issue: 1,
Sitasi : 0 01-Feb-2025
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| Last.17-Jul-2025
Abstrak:
Penelitian ini dilakukan sintesis nanopartikel menggunakan metode hydrothermal. Metode hydrothermal adalah proses pembentukan material dengan penggunaan air pada suhu rendah dan tekanan tinggi untuk merubah struktur kristal dan membentuk material nano-struktur. Penelitian ini bertujuan untuk mengetahui morfologi permukaan karakteristik nanopartikel TiO2, Al, dan Zn yang disintesis menggunakan metode hydrothermal. Sejumlah senyawa Co(NO3)2.6H2O dan Ni(NO3)2.6H2O digunakan pada penelitian ini. Setelah tahap dispersi sampel akan dimasukan ke dalam reaktor autoclave. Penelitian ini dilakukan dengan metode hydrothermal yaitu dengan pemanasan tinggi dengan suhu 150 ? dalam waktu 24 jam. Selanjutnya sampel akan dikarakterisasi dengan metode pengujian SEM untuk mengetahui morfologi permukaan nanopartikel. Hasil pengujian SEM sampel TiO2 memiliki bentuk seperti bongkahan yang tidak teratur dan memiliki ukuran yang cukup bervariasi. Pengujian SEM sampel nanopartikel Al menunjukan bentuk yang teratur serta berukuran kecil. Morfologi nanopartikel Zn memiliki bentuk yang sangat kecil dan halus terdapat beberapa partikel yang memiliki ukuran lebih besar dan kurang teratur. Dengan salah satu yang dapat disimpulkan Nanopartikel TiO2, Al, dan Zn, berhasil disintesis dengan metode hydrothermal dan menggunakan Zn(NO3)2.6H2O, Al(NO3)3.9H2O, serta TiO2 sebagai bahan baku dan terjadinya perubahan warna pada sampel pada setiap tahap yang dilakukan. Sampel memiliki warna yang beragam sehingga pada tahap awal menjadi larutan berwarna kuning pekat dan setelah menjadi nanopartikel menjadi hitam.
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2025 |
Penerapan Metode Transportasi Distribusi pada UD Kurnia Jaya
(Ardhila Ayu Innana, Dea Putri Aulia, Muhammad Rizky Rizmawan, Tegar Andika Rahman Wijaya, Titis Purwaningrum)
DOI : 10.61132/manuhara.v3i2.1576
- Volume: 3,
Issue: 2,
Sitasi : 0 21-Jan-2025
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| Last.06-Aug-2025
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This research aims to optimize the distribution of goods through the application of transportation methods at UD Kurnia Jaya. The main problem faced is how to minimize transportation costs in delivering rice to various agents. The Northwest Corner (NWC) method is used for the initial solution in processing supply and demand data. The results of the study show that the total minimum cost obtained for rice delivery is Rp 1,480,000 in one transportation. This study underscores the importance of applying transportation methods to improve distribution cost efficiency. It is hoped that this result can be a reference for MSMEs in managing logistics and increasing competitiveness through more optimal distribution management
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2025 |
Mind Map Sebuah Metode Solutif Meringkas Materi Pelajaran Berbasis Visual
(Nanang Abdillah, Rahmat Rudianto, Kharisma Putri Dwi Anggraeni, Zaenal Afandi, Charis Daffa Sabilillah, Menok Faiqatul Himmah, Jauharotul Munawaroh, Salfa Rizqi Amalia, Ahmad Nuzulul Furqon, Diva Vicky Viera)
DOI : 10.62383/bersama.v2i1.1051
- Volume: 2,
Issue: 1,
Sitasi : 0 17-Jan-2025
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| Last.27-Jul-2025
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The abstract of this research discusses Mind Map learning assistance as a method to facilitate visual-based summary of lesson material for Sukosari Mantup Lamongan Elementary School students. The Mind Map method was chosen because of its ability to improve students' understanding and memory through information visualization. Mentoring activities are carried out in three stages: preparation, implementation and evaluation. In the preparation stage, the service team prepares the necessary materials and tools. During implementation, students are taught how to make Mind Map s using concrete examples, so they can understand how to summarize material effectively. The results of this activity show that students are able to summarize the material better using the Mind Map method. Students' enthusiasm increases, and they demonstrate better abilities in understanding and summarizing lesson information. This research concludes that the use of Mind Map as a learning method has a positive impact on the teaching and learning process in the classroom, and can be an interesting alternative for students in understanding lesson material visually.
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2025 |
Do Political Parties Satisfy Voter's Communication Needs? Content Analysis of Twitter, YouTube and Instagram Posts
(Manpreet Kaur, Rajesh Verma, Frank Nana Kweku Otoo)
DOI : 10.26623/themessenger.v16i3.10349
- Volume: 16,
Issue: 3,
Sitasi : 0 11-Jan-2025
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| Last.09-Jul-2025
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Introduction: In an electronic democracy, politicians avoid being solely dependent on traditional communication channels like news media. Social media acts a political communication tool and Uses Gratification (UG) theory explains how people use media for their needs. Therefore, the attempt has been made to analyze the information shared on these social media platforms by political parties to communicate has any effect on communication needs according to Uses Gratification theory.
Methods: Content analysis was employed to achieve the objectives using R software, where in data was acquired from social media platforms of major political parties of India and the coding was developed to classify the extracted data into communication needs as per UG theory.
Findings: The content analysis shows that among all parties, BJP has higher visibility and consistency on Twitter and Instagram, satisfying cognitive needs. Most parties satisfy affective needs on Twitter, Instagram, and YouTube. However, YouTube content is less satisfying for personal integrative, social integrative, and tension released needs.
Originality: The current study tried to use innovative methods or combining methods in a new way. It provided new insights or implications that have not been extensively discussed. Therefore, Political parties should focus on specific social media for interactive and efficient information spread.
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2025 |
Dissemination of Milkfish Processing Sterilization Equipment to Improve Quality and Marketing Reach
(Fidia Fibriana, Nana Kariada Tri Martuti, Sunyoto Sunyoto, Danang Dwi Saputro, Nurdian Susilowati, Dewi Larasati)
DOI : 10.15294/kscew110
- Volume: 28,
Issue: 2,
Sitasi : 0 21-Dec-2024
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| Last.10-Jul-2025
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Milkfish processing is a superior product and a typical souvenir from Semarang City that requires serious attention because it has a significant impact on regional economic growth. Tambakrejo Village is a thematic village of Semarang City (Milkfish Processing Village) with the formation of the Putri Laut Processing and Marketing Group (Poklahsar) since 2017 with 21 members. Business actors in Poklahsar still face problems in production and marketing aspects. Partners in this PDTI are Poklahsar Putri Laut and Tambakrejo Village. In terms of production, the production capacity of presto milkfish is limited to only ± 50 kg / day. In addition, processed milkfish has a short shelf life so that technology needs to be applied. The reach of marketing aspects, product promotion is still lacking , In this community service activity, Retort pan facilities were provided, is one of the thermal food preservation techniques, which has many advantages, namely a shelf life of more than six months. The pressure cooker is a hybrid model specifically designed to make soft-boned milkfish effectively and efficiently. This presto milkfish cooker is a combination of innovations about soft-boned milkfish cookers with temperature and time control . The tool still uses LPG fuel and a soft-boned milkfish cooker with an electric heater.
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2024 |
Perancangan Kendali Integral State Feedback (KISF) Pada Sistem Pengaturan Kecepatan Motor DC
(Muhamad Nanang Indrajaya Saputra, I Ketut Wiryajati, I Nyoman Wahyu Satiawa)
DOI : 10.51903/elkom.v17i2.2121
- Volume: 17,
Issue: 2,
Sitasi : 0 14-Dec-2024
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| Last.23-Jul-2025
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This research aims to design and simulate a DC motor speed control system using integral state feedback (KISF) control. This control is designed to maintain DC motor speed stability with high accuracy despite disturbances or load changes. The research stages include mathematical modeling of the DC motor, PID control design, integral state feedback control design, simulation implementation and simulation results analysis. The show that althought integral state feedback control has a rise time 273.501 ms, slightly slower than PID 197.604 ms, integral state feedback compensates with higher slew rate of change 6.540 V/ms compared to PID
4.344 V/ms. Integral state feedback offers greater
flexibility through pole placement values with Ackerman’s formula J3 = [-12 -100 -600], indicating that this system has good capability in responding to input changes, thus maintaining motor speed stably and efficiently. This indicates that integral state feedback control is superior in system adaptation and handling complex dynamics.
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2024 |
The Effect of Natural Resource Profit Sharing Funds and Investment on Regional Gross Domestic Product through Regional Expenditure in Kutai Timur Regency
(Diana Lestari, Siti Amalia, Nurjanana Nurjanana, Suhartini Suhartini)
DOI : 10.62951/ijecm.v2i1.382
- Volume: 2,
Issue: 1,
Sitasi : 0 02-Dec-2024
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| Last.13-Aug-2025
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This study aims to analyze the effect of Natural Resource Profit Sharing Funds (DBH SDA) and investment on Gross Regional Domestic Product (GRDP) through regional expenditure in Kutai Timur Regency. The research employs path analysis with a multiple linear regression model using time series data from 2013-2022. The results indicate that DBH SDA has a significant positive effect on regional expenditure but a significant negative effect on GRDP. Conversely, investment has an insignificant negative effect on regional expenditure but a significant positive effect on GRDP. Furthermore, regional expenditure significantly and positively influences GRDP. Additional analysis reveals that the impact of DBH SDA on GRDP is more substantial through regional expenditure, while the direct effect of investment on GRDP is more pronounced. This study highlights the importance of efficient DBH SDA management and the optimization of investments to support regional economic growth.
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2024 |
Filosofis dan Praktis dalam pemikiran Al Farabi Dalam Pendidikan
(Deby Erdriani, Mukhaiyar Mukhaiyar, Azwar Anananda)
DOI : 10.58192/populer.v3i4.2688
- Volume: 3,
Issue: 4,
Sitasi : 0 25-Nov-2024
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| Last.07-Jul-2025
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Penelitian ini mengeksplorasi analisis filosofis dan praktis dari pemikiran Al Farabi dalam pendidikan.Al Farabi, seorang filsuf Islam terkemuka, menekankan pentingnya mengintegrasikan filsafat dan praktik dalam pendidikan untuk mengembangkan individu yang seimbang. Dengan meneliti ide-idenya, penelitian ini bertujuan untuk memberikan wawasan tentang bagaimana ajarannya dapat diterapkan dalam praktik pendidikan modern.Melalui kombinasi analisis teoritis dan contoh praktis, temuan penelitian ini menunjukkan bahwa penggabungan filosofi Al Farabi dapat meningkatkan kualitas pendidikan secara keseluruhan dan berkontribusi pada perkembangan holistik siswa.Implikasi dari penelitian ini menyoroti relevansi mengintegrasikan prinsip-prinsip filosofis ke dalam kerangka pendidikan untuk menumbuhkan pemikiran kritis, nilai-nilai moral, dan kesadaran sosial di kalangan pelajar.
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2024 |
Analysis of K-Nearest Neighbor (KNN), Naive Bayes ands Decision Tree C4.5 Algorithm With Classification Method In Breast Cancer Using RapidMiner
(Muhammad Iqbal, Maulana Donny, Hadikristanto Wahyu, Kurniadi Nanang Tedi, Amali Amali, Nawangsih Ismasari)
DOI : 10.62411/jais.v9i2.11242
- Volume: 9,
Issue: 2,
Sitasi : 0 23-Nov-2024
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| Last.31-Jul-2025
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Breast cancer is cancer that forms in the cells of the breast. It is the most common cancer in women and the leading cause of cancer deaths in women worldwide. Breast cancer is usually divided into two types: benign, or usually called benign and malignant, or usually called malignant. Benign cancers are usually characterized by small, round, tender lumps. In the fields of medicine, finance, marketing, and social science, data mining is a popular tool for performing proven analysis. This study will compare K-Nearest Neighbor (KNN), Naive Bayes, and Decision Tree C4.5 approaches for classifying breast cancer. The problem of this research is which algorithm has a high level of accuracy that can be used with breast cancer datasets and can provide information about patterns or models for early detection of breast cancer. The results of the research conducted using CRISP-DM show that K-Nearest Neighbor (KNN) has the highest accuracy value with 97.14% and its AUC value is 0.976. The AUC value also showed excellent classification, with an AUC value between 0.90 and 1.00.
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2024 |
Potensi Cadangan Karbon Tersimpan dan Serapan Karbon pada Ekosistem Hutan Kota Tinjomoyo Semarang
(Nur Puji Lestari, Nana Kariada Tri Martuti)
DOI : 10.15294/unnesjlifesci.v13.i2.592
- Volume: 13,
Issue: 2,
Sitasi : 0 07-Nov-2024
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| Last.10-Jul-2025
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The increase in GHGs in Semarang City, caused by the increase in motorized vehicles and industrial activity, has resulted in a decrease in environmental quality in urban areas and air pollution. Data from the Semarang City Environmental Service (2019), shows that total CO2e emissions in 2018 were dominated by CO2, namely 33,505,357.22 tons of CO2 (85.24%) of the total CO2e tons of GHG emissions. To reduce CO2 emissions in Semarang City, one way that can be done is by utilizing urban forests which can absorb carbon dioxide. Based on these conditions, estimates of stored carbon reserves and carbon uptake in urban forests need to be calculated to determine the CO2 that plants in urban forests can absorb. This research aims to analyze the amount of stored carbon reserves and carbon uptake in the Tinjomoyo Semarang City Forest ecosystem. This research uses an exploratory method carried out through direct observation and measurement in the field. The sampling technique used is the belt transect method. The stand measurement method is carried out using the Non-Destructive Test (NDT) method or by not damaging the research samples. Stand data analysis was carried out using the allometric equation method. Based on calculation results, the number of individual stands in the Tinjomoyo Semarang City Forest area is 367 individual stands. The total amount of biomass is 125.5 tonnes/ha, the total carbon stock is 57.72 tonnes/ha and the total amount of carbon uptake is 211.8 tonnes/ha. This research shows that the estimated carbon reserves stored in the Tinjomoyo City Forest ecosystem, Semarang are 57.72 tonnes/ha with a carbon uptake value of 211.8 tonnes/ha.
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2024 |