Article Per Year (5 Year)
p-Index From 2020 - 2025
4.08
P-Index
This Author published in this journals
All Journal Dialektika Jurnal Pendidikan Indonesia Jurnal Kreatif Tadulako Online WARTA Jurnal Penelitian Humaniora Jurnal Ilmiah Teknik Mesin QUANTUM: Jurnal Inovasi Pendidikan Sains Sinkron : Jurnal dan Penelitian Teknik Informatika INTEGER: Journal of Information Technology Turbo : Jurnal Program Studi Teknik Mesin METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Sawerigading Jurnal Manajemen Informatika dan Sistem Informasi JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) JIKA (Jurnal Informatika) INFOKUM Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) Mattawang: Jurnal Pengabdian Masyarakat Profitabilitas AMMA : Jurnal Pengabdian Masyarakat Jurnal Akademika Kimia
Tri Santoso
Fakultas Pertanian Universitas Muhammadiyah Purworejo
Arts Humanities Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences

Published : 31 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 31 Documents
Search

 1   2   3   4 
Antioxidant Activity Test of (Acalypha indica L) Extract Nursafitri, Nursafitri; Santoso, Tri
Jurnal Akademika Kimia Vol. 12 No. 3 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i3.pp176-181

Abstract

The antioxidant activity test of Acalypha indica L has been carried out. This study aimed to determine the IC50 value of the Acalypha indica L extract. The radical concentration of 2,2-diphenyl-1-picrylhydrazyl (DPPH) after adding Acalypha indica L extract was determined using a UV-Vis spectrophotometer. The concentration variations used in Acalypha indica L extract were 15.48 ppm, 30.96 ppm, 46.44 ppm, and 61.92 ppm. The results showed that the IC50 value of Acalypha indica L extract was 41,259 ppm, while the IC50 value of vitamin C as a comparison was 50.626 ppm. Based on the IC50 value data above, it can be seen that the antioxidant of Acalypha indica L extract is robust compared to vitamin C.
Examining Student Conception of Reaction Rate Through Three-Tier Multi-Representation Assessments Magfirah, Magfirah; Alimuddin, Chatifah; Santoso, Tri; Afadil, Afadil; S. Ahmar, Dewi; Rahmawati, Sitti
Jurnal Akademika Kimia Vol. 12 No. 3 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i3.pp199-204

Abstract

This study aims to analyze students' conceptions of reaction rate topics using the three-tier multi-representation test. Based on the characteristics of reaction rates concepts that involve the understanding of multiple representations, it is essential to analyze student conceptions that include multiple representations, namely macroscopic, microscopic, and symbolic. A three-tier diagnostic test can be done to assess students' conceptions, with the questions given in the first tier presented with macroscopic, microscopic, or symbolic representations according to the characteristics of the concept in question. This research uses a descriptive quantitative method conducted at Madrasah Aliyah Negeri 2 in Palu City, Central Sulawesi. The subjects of this study were 50 students consisting of 28 female students and 22 male students. It was determined by random sampling technique. Instrumentation used a three-tier representation test with 15 multiple-choice questions. Validation of instruments showed that the questions were feasible and fell into the high category. The findings reveal that only 29 % of students know the concept, categorized as low. Additionally, 40 % of students were identified as having misconceptions, placing them within the medium category, while 31 % of students exhibited not knowing the concept, also classified in the medium category. Symbolic representation emerged as the most challenging representation for students, with 35 % failing to comprehend it, categorized as medium. Furthermore, among students with misconceptions, symbolic and macroscopic representations were the most problematic, collectively accounting for 34 %, also classified as medium. These results underscore the need for targeted instructional strategies to address specific areas of difficulty and improve overall conceptual understanding.
Analisis Clustering Menggunakan Algoritma K-Means Dalam Pengelompokan Penjualan Produk Bahan Bangunan Syahriani, Syahriani; Handayani, Popon; Santoso, Tri
Journal of Information System Research (JOSH) Vol 6 No 1 (2024): Oktober 2024
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/josh.v6i1.5837

Abstract

Sandimas Group is a trading airline that is a leading supplier of building materials throughout Indonesia. This building materials trading company markets various granite tile and sanitary products. But unfortunately, this trading company still has a problem, namely that it is still difficult to ensure the quantity of supply of products that customers really like. This problem can be solved with a system that can identify the best-selling products from various product groups. The aim of this research is to find out the right and appropriate product supply so that there is no buildup of product in the warehouse. This can be seen based on the clusters that have been formed. The formation of clusters to group merchandise products in this trading airline uses the K-Means Clustering algorithm. This algorithm can perform calculations accurately. This research is expected to be able to answer this problem correctly based on the similarity of the data. The application of the K-Means Clustering algorithm at the Sandimas Group is by collecting known product supplies in the sales transaction recap for 1 period in 2022. The results of calculating the K-Means Clustering algorithm from 15 known products are 5 products which are included in clusters 1, 6 products are included in cluster 2 and 4 products are included in cluster 3. This cluster can be seen based on the similarity of the data, namely cluster 1 is formed where buyers really like the price in the range of IDR 152,640 to IDR 225,000, cluster 2 is formed where customers quite like the product price in the range of IDR 455,896 to IDR 530,000 while cluster 3 was formed where customers liked product prices ranging from IDR 217,000 to IDR 252,000.
Effectiveness of Purification Used Cooking Oil Using Adsorbents: Activated Charcoal Seeds Salak (Salacca zalacca) Sufia, Sufia; Santoso, Tri; Aminah, Sitti; Rahmawati, Sitti
Jurnal Akademika Kimia Vol. 12 No. 4 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i4.pp247-253

Abstract

Salak seeds have a reasonably high cellulose content. This suggests that salak seeds can be used as a raw material for producing activated charcoal to refine used cooking oil. This study aims to determine the effectiveness of refining used cooking oil using active charcoal adsorbents derived from Salacca zalacca seeds. The methods used to determine free fatty acid levels and peroxide values are the acid-base and iodometric titration methods. This study will observe several variables that affect the adsorption process, namely the mass of activated charcoal and the contact time of used cooking oil. The results showed a decrease in free fatty acids and peroxide number, and the colour of the oil became brighter with increasing adsorbent and contact time. The best results were obtained at a mass of 15 grams and an adsorption time of 120 minutes. Based on the quality requirements for cooking oil as specified in SNI 3741-1995.
Analysis of Bioaccumulation of Mercury (Hg) in Yuyu Crabs (Parathephusa Convexa) in The Janja River, Malomba Village, Dondo District, Tolitoli Regency Santoso, Tri; Hasrudin, Hasrudin; Aminah , Sitti; Pulukadang, Sri H. V.
Jurnal Akademika Kimia Vol. 14 No. 1 (2025)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2025.v14.i1.pp8-12

Abstract

The phenomenon of environmental damage due to unlicensed gold mining activities harms aquatic ecosystems. Mercury (Hg) waste from the mining process has the potential to cause bioaccumulation in aquatic biota such as fish and crabs, which can lead to mercury contamination in the human body through the food chain. The bioaccumulation process can also produce toxic organic compounds that harm human health. Therefore, this research aims to determine whether mercury bioaccumulation occurs in yuyu crabs in the Janja River, Malomba Village, Dondo District, Tolitoli Regency, due to gold mining activities. The method used in the research is the calibration curve method with Cold Vapor Atomic Absorption Spectrophotometry (CV-AAS) analysis at a wavelength of 253.7 nm. The results obtained from this research indicate that bioaccumulation has occurred in yuyu crabs that live in the Janja River. The highest accumulated mercury metal levels were obtained at upstream locations with an average of 5.24 ppb; the lowest was in the midstream, which is 1.53 ppb. At the downstream location, it has a mercury concentration of 4.53 ppb. So it shows that the mercury contamination in the yuyu crab samples is below the quality standard threshold, Indonesian National Standard No. 7387 of 2009, for the heavy metal mercury in other types of crabs and crustaceans is 1.0 ppm or 1000 ppb.
Pelatihan Optimalisasi Digital Marketing Menggunakan TikTok Pada UMKM Desa Rawa Panjang Handayanna, Frisma; Safitri, Maryanah; Santoso, Tri
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 5 : Juni (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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

Abstract

Optimizing digital marketing through the TikTok platform for MSMEs in Rawa Panjang Village. MSMEs in this village face challenges in utilizing digital technology to promote their products. With the growing use of social media, TikTok has become an effective platform for marketing products to a wider audience, especially the younger generation. This training is carried out using training methods that include creating creative content, appropriate marketing techniques, and maximizing TikTok features. MSMEs make a significant contribution to the regional economy by creating jobs and strengthening the purchasing power of local communities. Through this training, MSMEs in Rawa Panjang Village can increase the visibility of their products, attract more customers, and increase sales turnover. The results of this training have a positive impact on local economic development by empowering MSMEs to be more adaptive to digital marketing trends.
Penerapan Analisa Tingkat Kepuasan dan Kualitas Pengguna terhadap Aplikasi Balindo dengan Metode Webqual 4.0 dan IPA Zefanya, Gifty Mathilda; Santoso, Tri; Syahriani, Syahriani
METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Vol. 9 No. 1 (2025): METHOMIKA: Jurnal Manajemen Informatika & Komputersisasi Akuntansi
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/jmika.Vol9No1.pp151-159

Abstract

In analyzing the level of user satisfaction and quality on the Balindo application and evaluating the influence of users after they have experience in using the Balindo application by applying the WebQual 4.0 method and the IPA method. Researchers collected data by distributing questionnaires made for users, namely customers/tenders from Balindo application users totaling 250 people. When the questionnaire data has been collected and after processing the data, the results of the process can be seen from the validation test R Calculation> R Table. This reflects that the question items from the questionnaire have a significant correlation to the total score or can be declared valid. After that, the results of the reliability test can be obtained from the results of the Cronbach's Alpha value of all items> 0.06. From this, it can be said that the questionnaire items are reliable or consistent, so they can be used as a data collection tool to carry out research and cover the division of priorities in order to get a very important response and must still be considered. After calculating the quality and user satisfaction of the Balindo application, the results of the interpretation showed that many respondents felt satisfied with the alternative of auctions as they usually do but have a significant influence on the potential for errors or mistakes in the Balindo application so that this can be used as evaluation material and further development of the Balindo application to make it even better.
INTEGRASI KESANTUNAN SOSIOLINGUISTIK DALAM PEMBELAJARAN BAHASA INDONESIA DI SEKOLAH DASAR Santoso, Tri; Kusmanto, Hari; Bilqis Salsabila S, Safa
Dialektika: Jurnal Bahasa, Sastra, dan Pendidikan Bahasa dan Sastra Indonesia Vol 12, No 1 (2025)
Publisher : Department of Indonesia Language and Literature Teaching, UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/dialektika.v12i1.42745

Abstract

Language politeness among students is currently experiencing a reduction in polite language. The phenomenon of the reduction of students' language politeness in this educational environment needs attention and touch. One way that can be done to overcome the reduction of language politeness in the educational environment can be done by integrating language politeness in the pursuit of learning activities. This research is descriptive qualitative research with a combination of content analysis and literature review. The data and data sources in this study were taken from Merdeka curriculum documents published in the form of regulations from the Minister of Education, Culture, and Research of Indonesia. In addition, literature books and journals related to sociolinguistic politeness also became data sources in this study. The validation technique in the research used triangulation of data sources and theories. The data in this study were analyzed inductively based on Milles and Huberman's analysis technique. The results of this study revealed that teachers in integrating language politeness can use sociolinguistic politeness in early learning activities, core learning, and end of learning activities. Language politeness integration learning is basically a method used to foster students' ability to communicate in accordance with the context and situation of communication. In other words, the integration of sociolinguistic politeness in language learning as an effort to achieve the learning objectives in which students can use language as a means of communication. Language politeness assessment can be done with essay tests, observations, and objective tests.
The Levels of Student Questioning and Critical Thinking Ability in Acid-Base Topics and Correlation with Learning Outcomes Magfirah, Magfirah; Zulhan, Zulhan; Santoso, Tri; Afadil, Afadil; Pulukadang, Sri H. V.; Marpaung, Meida E.
Jurnal Akademika Kimia Vol. 14 No. 1 (2025)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2025.v14.i1.pp29-33

Abstract

Acid-base material is often considered difficult for students because it is abstract, leading to misconceptions and poor learning outcomes. The ability to ask questions reflects cognitive engagement and is closely related to the critical thinking required to understand abstract concepts. Therefore, it is important to examine this skill to obtain evidence of its role in improving chemistry learning outcomes and as a consideration for teachers in determining the appropriate learning process. This study aims to analyze students' questioning skills and critical thinking abilities in acid-base learning and examine the relationship between these skills and students' learning outcomes. A quantitative descriptive approach was employed and conducted at SMAN 1 Dampal Utara. The research subjects comprised 30 students, including 17 females and 13 males. Male students. The sample was selected using a purposive sampling technique. The instruments used for data collection included the questioning skills test and the critical thinking skills test. The results indicated that students’ questioning skills were categorized as moderate with a percentage of 57.5 %, similarly, their critical thinking abilities also fell into the mild category with a rate of 48.33 %. Correlation analysis revealed a significant relationship between questioning skills and learning outcomes (r= 0.386;α=0.035). Meanwhile, the relationship between critical thinking and learning outcomes was shown to be insignificant (r= 0.225;α= 0.173). These findings suggest that questioning skills can contribute to optimal learning outcomes.
INTEGRASI KESANTUNAN SOSIOLINGUISTIK DALAM PEMBELAJARAN BAHASA INDONESIA DI SEKOLAH DASAR Santoso, Tri; Kusmanto, Hari; Bilqis Salsabila S, Safa
Dialektika: Jurnal Bahasa, Sastra, dan Pendidikan Bahasa dan Sastra Indonesia Vol. 12 No. 1 (2025)
Publisher : Department of Indonesia Language and Literature Teaching, UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/dialektika.v12i1.42745

Abstract

Kesantunan berbahasa di kalangan pelajar pada saat ini mengalami reduksi berbahasa secara santun. Fenomena reduksi santun berbahasa siswa di lingkungan pendidikan ini perlu mendapatkan perhatian dan sentuhan. Salah satu cara yang dapat dilakukan untuk mengatasi reduksi kesantunan berbahasa di lingkungan pendidikan dapat dilakukan dengan cara mengintegrasikan kesantunan berbahasa dalam kegiatan belajar mengajar. Penelitian ini merupakan penelitian deskriptif kualitatif dengan kombinasi analisis konten dan literatur reviu. Data dan sumber data pada penelitian ini diambil dari dokumen kurikulum merdeka yang diterbitkan dalam bentuk regulasi peraturan Mendikbudristek. Selain itu, literatur buku dan jurnal terkait kesantunan sosiolinguistik juga menjadi sumber data dalam penelitian ini. Teknik validasi dalam penelitian menggunakan triangulasi sumber data dan teori. Data dalam penelitian ini dianalisis secara induktif berdasarkan teknik analisis Miller dan Huberman. Hasil penelitian menunjukkan bahwa integrasi kesantunan dalam pembelajaran bahasa dapat diterapkan secara sistematis melalui tiga tahapan kegiatan belajar mengajar: kegiatan awal, inti, dan penutup. Ketiga tahapan ini mendukung pembentukan kompetensi komunikatif dan kesadaran sosial siswa. Selain itu, pembelajaran kesantunan berbahasa juga dapat dinilai melalui instrumen seperti tes esai, observasi perilaku verbal, dan tes objektif berbasis konteks. Simpulan dari penelitian ini adalah bahwa kesantunan sosiolinguistik dapat diintegrasikan secara praktis dan efektif dalam pembelajaran untuk membentuk budaya komunikasi santun di lingkungan sekolah dasar.
Co-Authors - STMIK Nusa Mandiri, Adelia Alvi Yana ., Syahriani Afadil Alimuddin, Chatifah Aminah , Sitti Ardian Dwi Praba Astrilyana - Universitas Bina Sarana Informatika Atiqa Sabardila Bachtiar, Dimas Agung Bilqis Salsabila S, Safa C. Morokuhi, Yulina Dewi Satria Ahmar Dewi Susilowati Dicky Sulaeman, Dicky Dwiyanto Djoko Pranowo Firdaus Muhammad, Fadil Frisma Handayanna Hamzah, Abdul Handayani, Popon Hanifa Muhammad, Nadia Hartati, H Hasrudin, Hasrudin K. Walanda, Daud Kusmanto, Hari Lukito Dwi Yuono, Lukito Dwi Magfirah, Magfirah Marpaung, Meida E. Maryanah Safitri Miftakhul Huda Muh Ihsanudin, Muh Nursafitri, Nursafitri Omar Pahlevi Prisscilya, Veren Pulukadang, Sri H. V. Purnama Ningsih Ratnawati Ratnawati Riyandi, Albert S. Ahmar, Dewi Siti Aminah Sitti Aminah Sitti Rahmawati Sufia, Sufia Suherman, Suherman Sukmawati Sukmawati Sulis Triyono Suryasa, Raden Bagus SW, Sulistianto Syahriani Syahriani Syahriani, Syahriani Wibowo, Imam Yakub Nasucha Zefanya, Gifty Mathilda Zulhan, Zulhan