We are delighted to present this Conference Proceedings of the 7th International Joint Conference on Science and Technology (IJCST) 2023 with theme : “The Innovation Breakthroug in Digital and Disruptive Era”. This year, IJCST is held by Faculty of Social Science and Law Universitas Negeri Manado on October 5th-7th, 2023 in Auditorium Universitas Negeri Manado, North Sulawesi, Indonesia.

IJCST is an annual international conference, consisting of ICSS and ICST, initiated by 16 universities in Indonesia. ICST is one part of the IJCST event which focuses on the field of Science and Technology. The ICST scope raised in this year is Biological and Environmental Sciences, and Contemporary Technological Innovations. It is attended by scholars, researchers, practitioners, and government to discuss research and practices in science and technological innovations.

Committees Members Steering Committees
  • Prof. Dr. Deitje A. Katuuk, M.Pd (Rector of Universitas Negeri Manado)
  • Recky H. E. Sendouw, SP., MM., Ph.D (Dean of Faculty of Law and Social Sciences)
  • Dr. Theodorus Pangalila, S.Fils., M.Pd (The Conference Chairman)
  • Dr. Isye J. Melo, SH., MH (The Vice Chairman of Conference)
  • Dr. Goinpeace Tumbel, S.Sos., MAP., M.Si (The Vice Chairman of Conference)
  • Jeane Mantiri, S.AB., MAP (The Secretary of Conference)
  • Wissje Wowor, SE (The Financial Treasurer of Conference)
Members:
  • Grace S. J. Roeroe, SE., MAP
  • Sam Saroinsong, SH., MH
  • Dr. Agustien Cherly Wereh, SH., MH
  • Dr. Sisca B. Kairupan, M.Si
  • Dr. Meike Imbar, M.Pd
  • Margareth Rantung, SH, MAP
  • Romi Mesra, S.Pd., M.Pd
  • Kristofel Santa, SST, MMT
  • dr. Tierza Undap, Sp.KFR
  • Royke Moningka
Reviewer:
  • Prof. Dr. Agustinus P. Irawan, MT (Universitas Tarumanagara Indonesia)
  • Dr. Noorhan Abbas (Leeds University United Kingdom)
  • Dr. Noorul Islam (Kanpur Institute of Technology India)
  • Muhammad Imran Qureshi, Ph.D (Universiti Teknikal, Malaysia)

DOI: https://doi.org/10.47577/technium.v16i

Published: 2023-10-29

Articles

The Use Of Social Media And Its Relationship With Vocational School Learning Outcomes

Alfrina Mewengkang, Keith Ratumbuisang, Hiskia Legesan

1-6

PDF
DOI: https://doi.org/10.47577/technium.v16i.9946

Placemaking as a development strategy for the Paal Likupang Beach tourism area

Heince Andre Maahury, Djubir Ruslan Edi Kembuan, Ramadhani Asrar, Desty Rara Retna Kalude, Andi Andre Pratama Putra

7-10

PDF
DOI: https://doi.org/10.47577/technium.v16i.9947

Village Open Data Implementation: Lesson Learned from Alang-alang Vilalge, Madura

Muhammad Yusuf, M Kautsar Sophan, Budi Dwi Satoto, Devie Rosa Anamisa, Nurwahyu Alamsyah

11-17

PDF
DOI: https://doi.org/10.47577/technium.v16i.9951

Development of Public Value Based E-Government Maturity Framework

Titisari Ramadhane, Luthfi Ramadani, Lukman Abdurrahman

18-25

PDF
DOI: https://doi.org/10.47577/technium.v16i.9950

Laboratory Testing-Based Characterization of Peat in Palangkaraya, Central Kalimantan

Annisa Khoerani, Iskandar, Ahmad Sofyan, Tatang Sumarna, Dewi Amalia, Dewi Amalia, Suherman Sulaiman

26-33

PDF
DOI: https://doi.org/10.47577/technium.v16i.9952

The Effect of Educational Technology on Learning Facilities on Learning Independence to Improve Learning Outcomes of Building Construction Engineering Students

Djubir R.E. Kembuan, Metsi Daud, Titof Tulaka

34-42

PDF
DOI: https://doi.org/10.47577/technium.v16i.9956

Streamlining Medical Services: A Virtual Chatbot for Stomach- related Illnesses

Tresna Maulana Fahrudin, Angela Lisanthoni, Prismahardi Aji Riyantoko, Kartika Maulida Hindrayani, Dwi Arman Prasetya

43-49

PDF
DOI: https://doi.org/10.47577/technium.v16i.9957

Application of Fuzzy Inference System Takagi-Sugeno Methods for Diagnosis of Diseases and Pests of Madura Paddy Rice Based on Symptoms

Devie Rosa Anamisa, Budi Dwi Satoto, Muhammad Yusuf, Moch. Kautsar Sophan, Fifin Ayu Mufarroha

50-56

PDF
DOI: https://doi.org/10.47577/technium.v16i.9958

The Interactive Multimedia Learning Application for Visual Communication Classroom

Arje Cerullo Djamen, Johan Reimon Batmetan

57-62

PDF
DOI: https://doi.org/10.47577/technium.v16i.9960

Exploring Students’ Acceptance Level of Learning Management System (LMS) as E-learning Platform using Technology Acceptance Model (TAM) at Manado State University

Keith Francis Ratumbuisang, Yosua Fitsgerald Ratumbuisang, Djubir Ruslan Eddy Kembuan, Johan Reimon Batmetan, Merriam Modeong

63-69

PDF
DOI: https://doi.org/10.47577/technium.v16i.9961

Optimizing K-Means Clustering: A Comparative Study of Optimization Algorithms For Convergence And Efficiency

Alfiansyah Hasibuan, Djubir R.E. Kembuan, Vivi Peggie Rantung, Medi Hermanto Tinambunan

70-75

PDF
DOI: https://doi.org/10.47577/technium.v16i.9962

Smart Grid Study As Solution To The Challenges Of Electricity Transmission And Distribution In North Sulawesi

I Gede Budi Mahendra, Djubir R.E. Kembuan, Janne Deivy Ticoh, Billy Killis, Djami Olii

76-82

PDF
DOI: https://doi.org/10.47577/technium.v16i.9963

A Conceptual Framework for e-Commerce Personalization in Small Medium Enterprise’s

Johan Reimon Batmetan, Trudi Komansilan, Sondy C Kumajas

83-91

PDF
DOI: https://doi.org/10.47577/technium.v16i.9964

Comparative Analysis of Prediction Results of Decision Support Systems Simple Additive Weighting Method with Preference Selection Index in Determining Scholarship Recipients

Medi Hermanto Tinambunan, Djubir R.E. Kembuan, Vivi Peggie Rantung, Alfiansyah Hasibuan

92-97

PDF
DOI: https://doi.org/10.47577/technium.v16i.9965

Distinctive Features and Design for Mathematics Learning Mobile Games in Elementary School Students

Gilly Marlya Tiwow, Djubir R E Kembuan, J R Batmetan

98-105

PDF
DOI: https://doi.org/10.47577/technium.v16i.9966

One Line Plus Soft Keyboard Layout for Smartwatches Text Entry

Eka Prakarsa Mandyartha, Fawwaz Ali Akbar, Auliya Arkhan

106-111

PDF
DOI: https://doi.org/10.47577/technium.v16i.9967

Oversampled-Based Approach to Overcome Imbalance Data in the Classification of Apple Leaf Disease with SMOTE

Eva Y Puspaningrum, Yisti Vita Via, Chilyatun Nisa, Hendra Maulana, Wahyu S.J.Saputra

112-117

PDF
DOI: https://doi.org/10.47577/technium.v16i.9968

An Approach for Automatic Generating RESTFul API Code based on SQL DDL Code

Fawwaz Ali Akbar, Eka Prakarsa Mandyartha, Hendra Maulana

118-123

PDF
DOI: https://doi.org/10.47577/technium.v16i.9969

Neural Network Classification in Javanese Handwriting Recognition using Projection Profile Histogram and Local Binary Pattern Histogram

Fetty Tri Anggraeny, Yisti Vita Via, Retno Mumpuni, Heliza Rahmania Hatta, Narti Eka Putri, Joni Bastian

124-128

PDF
DOI: https://doi.org/10.47577/technium.v16i.9970

Early Prediction for Graduation of Private High School Students with Machine Learning Approach

Kartini, Fetty Tri Anggraeny, Aang Kisnu Darmawan, Anik Anekawati, Ivana Yudhisari

129-136

PDF
DOI: https://doi.org/10.47577/technium.v16i.9971

Use of Patterned Datasets (Minimum and Maximum) to predict Bitcoin and Ethereum price movements

Rizky Parlika, Mustafid, Basuki Rahmat

137-142

PDF
DOI: https://doi.org/10.47577/technium.v16i.9972

Object Localization and Detecting Alphabet in Sign Language BISINDO Using Convolution Neural Network

Yisti Vita Via, Wahyu S. J. Saputra, Mohammad Idham Fachrurrozi, Eva Yulia Puspaningrum, Fetty Tri Anggraeny, Salamun Rohman Nudin

143-149

PDF
DOI: https://doi.org/10.47577/technium.v16i.9973

Use of Lactobacillus Bacteria to Degrade Oil and Grease in Restaurant Wastewater

Novirina Hendrasarie, Syahrul Romadon, RKH Putro, Aussie A.

150-157

PDF
DOI: https://doi.org/10.47577/technium.v16i.9974

Review of the Implementation of the Concept of Sustainable Tourism on the Manado Bay

Felly Ferol Warouw, Sonny Davy Mailangkay, Djubir Kembuan, Telly Tangkere, Lady Grace Jane Giroth

158-163

PDF
DOI: https://doi.org/10.47577/technium.v16i.9975

The Effect of Image Size on the Deep Learning Approach for Classifying Covid-19 Pneumonia

Budi Nugroho, Anny Yuniarti

164-168

PDF
DOI: https://doi.org/10.47577/technium.v16i.9976

Multinomial Optimization of Naïve Bayes Through the Implementation of Particle Swarm Optimization

Made Hanindia Prami Swari, Dio Farrel Putra Rachmawan, Chrystia Aji Putra

169-175

PDF
DOI: https://doi.org/10.47577/technium.v16i.9977

Sales Product Clustering Using RFM Calculation Model And K-Means Algorithm on Primskystore

Agussalim, Rahayu Kusumaningtyas Paramita Wardhani, Amalia Anjani

176-182

PDF
DOI: https://doi.org/10.47577/technium.v16i.9978

Implementation Of Android-Based Fish Detection & Recognition System Using Convolutional Neural Network Method

Faikul Umam, Ach. Dafid

183-192

PDF
DOI: https://doi.org/10.47577/technium.v16i.9979

Expert System to Diagnose Diseases in Corn Plant Using Mobile-Based Forward Chaining And Certainty Factor Methods

Hanifudin Sukri, Firmansyah Adiputra

193-200

PDF
DOI: https://doi.org/10.47577/technium.v16i.9980

User Interface Design for Grab Merchant Application Version 4.18.0 with Usability Approach

Weny Fdiasindiastuti, Ari Basuki, Rullie Annisa, Fitri Agustina, Faikul Umam, Retno Indiartiningtias

201-206

PDF
DOI: https://doi.org/10.47577/technium.v16i.9981

Optimization Dragline on Parameter and Gas Cutting of Laser Beam Machining in SS400 Steel using Taguchi L16 Methods

Rifky Yusron, Bambang Tjiroso, Kukuh Winarso

207-212

PDF
DOI: https://doi.org/10.47577/technium.v16i.9982

Developing Human Hand Gesture Data

Muhammad Fuad, Sri Wahyuni, Nuniek Fahriani, Ilham Nurwahyudi, Mochammad Ilham Darmawan, Fahmi Maulana

213-218

PDF
DOI: https://doi.org/10.47577/technium.v16i.9983

Determining Student Achievements using Multicriteria Approach with Electre Method

Achmad Jauhari, Yudha Dwi Putra Negara, Faisol Arif Efendi, Fifin Ayu Mufarroha, Devie Rosa Anamisa, Abdullah Basuki

219-225

PDF
DOI: https://doi.org/10.47577/technium.v16i.9984

Quality Assurance of Academic Websites using Performance Testing Tools

Fifin Ayu Mufarroha, Ahmad Farisul Haq, Arifatul Maghfiroh, Devie Rosa Anamisa, Ahmad Afif Supianto, Achmad Jauhari

226-233

PDF
DOI: https://doi.org/10.47577/technium.v16i.9985

Design and Implementation of Tourism News Information Retrieval System using Modified Cosine Similarity

Ika Oktavia Suzanti, Husni, Biru Sultan Awaldhia, Mohammad Syarief

234-236

PDF
DOI: https://doi.org/10.47577/technium.v16i.9986

Experimental Investigation of a Convection - Improved Solar Salt Evaporation System

Nizar Amir, Makhfud Efendy, Mohd Nazri Latiff Azmi

237-242

PDF
DOI: https://doi.org/10.47577/technium.v16i.9987

Sentiment Analysis of Madura Tourism Opinion Using Support Vector Machine (SVM)

Doni Abdul Fatah, Eka Mala Sari Rochman, Fajrul Ihsan Kamil, Ahmad Su’ud

243-249

PDF
DOI: https://doi.org/10.47577/technium.v16i.9988

Classification of coastal shrimp species using deep learning InceptionResNetV2 with data augmentation

Budi Dwi Satoto, Bain Khusnul Khotimah, Mohammad Yusuf, Rinci Kembang Hapsari, Budi Irmawati

250-258

PDF
DOI: https://doi.org/10.47577/technium.v16i.9989

SakeraHerbDB Proposing an Integrated Indonesian Traditional Herbal Medicine Database IITHMDB for Madura Islands Herbs

Muhammad Yusuf, M Kautsar Sophan, Aang Kisnu Darmawan, Devie Rosa Anamisa, Budi Dwi Satoto, Nurwahyu Alamsyah

259-265

PDF
DOI: https://doi.org/10.47577/technium.v16i.9995

Analysis And Improvement Of Drug Supply Chain Risk Management Using House Of Risk (HOR) And Analytical Hierarchy Process (AHP) Approaches

Ernaning Widiaswanti, Heri Awalul Ilhamsah, Rahmad Faizal

266-272

PDF
DOI: https://doi.org/10.47577/technium.v16i.9996

Lung Cancer Classification Using Random Oversampling and Gradient Boosted Decision Tree

Wahyudi Setiawan, Yoga Dwitya Pramudita, Mulaab

273-279

PDF
DOI: https://doi.org/10.47577/technium.v16i.9997

Implementation of A*(Star) Algorithm in Robots Object Movement

Ahmad Sahru Romadhon, Vivi Tri Widyaningrum, Ach. Dafid

280-285

PDF
DOI: https://doi.org/10.47577/technium.v16i.9998

Design and simulation of rectangular patch microstrip antenna with inset feed for ADS-B system

Muttaqin Hardiwansyah, Dian Neipa Purnamasari

286-292

PDF
DOI: https://doi.org/10.47577/technium.v16i.9999

Design a Data Acquisition System on Deflection Test Equipment

Teguh Prasetyo, Hakam Muzakki, M Nur Rajab Zainal A

293-298

PDF
DOI: https://doi.org/10.47577/technium.v16i.10000

The Green Production Strategy for the Small and Medium Size Enterprises of The Leather Sandal

Issa Dyah Utami, Ika Deefi Anna, Wulan Puspitasari

299-302

PDF
DOI: https://doi.org/10.47577/technium.v16i.10001

Classification of Diseases on Corn Stalks using a Random Forest based on a Combination of the Feature Extraction (Local Binary Pattern and Color Histogram)

Aeri Rachmad, Nachnul Ansori, Silfia Rifka, Eka Mala Sari Rochman, Hermawan, Husni, Wahyudi Setiawan

303-309

PDF
DOI: https://doi.org/10.47577/technium.v16i.10002

Multiphase Flow Analysis of Three-Dimensional Journal Bearing with Roughness Using Computational Fluid Dynamics (CFD)

S Susilowati, Silvana Dwi Nurherdiana, Sukirmiyadi, Erwan Adi Saputro, Mohammad Tauviqirrahman, Dani Arfiandani, Paryanto

310-316

PDF
DOI: https://doi.org/10.47577/technium.v16i.10003

Study of Flakes from Protein-Rich Flour and Essential Oils For Stunting Sufferers

Dedin Finatsiyatull Rosida, Sri Winarti, Nurul Firdausy

317-321

PDF
DOI: https://doi.org/10.47577/technium.v16i.10004

Designing Supply Chain Resilience with a Quality Function Deployment Approach: A Case Study in a Shipping Line Company

Dira Ernawati, Isna Nugraha, Ni Ketut Sari

322-329

PDF
DOI: https://doi.org/10.47577/technium.v16i.10005

Phosphate removal from wastewater for the manufacture of struvite fertilizer

Dyah Suci Perwitasari, Nur Aini Fauziyah, Pardi Sampe Tola, Stefanus Muryanto, Jamari Jamari, Athanasius Priharyoto Bayuseno

330-333

PDF
DOI: https://doi.org/10.47577/technium.v16i.10006

Activated Carbon Coconut Shell as Base of Anode Battery: A Review

Erwan Adi Saputro, Sukirmiyad, Susilowati, Silvana Dwi Nurherdiana, Diana Silvia Rahma Wardhani, Kirana Aurelia Salshabila, Nurten Sahan

334-340

PDF
DOI: https://doi.org/10.47577/technium.v16i.10007

Analysis of Line Balancing using Ranked Positional Weight (RPW), Largest Candidate Rule (LCR), and J-Wagon Methods in Crane Girder Production at PT MHE Demag Surabaya, Indonesia

Farida Pulansari, Isna Nugraha

341-349

PDF
DOI: https://doi.org/10.47577/technium.v16i.10008

Analysis of Total Suspended Solid Algorithm on Tuban Coast with 2 Channel Approach of Visible Light Wavelength Satellite Image

Hendrata Wibisana, Bagas Aryaseta, Primasari Cahya Wardhani

350-354

PDF
DOI: https://doi.org/10.47577/technium.v16i.10009

Aesthetics Skylines in Manado

Desty Rara Retna Kalude, Djubir Ruslan Eddy Kembuan, Keith Francis Ratumbuisang

355-363

PDF
DOI: https://doi.org/10.47577/technium.v16i.10010

Characteristics Physicochemical and Determination Formaldehyde of Yellow Tofu at Kediri Regency

Jariyah, Andre Yusuf Trisna Putra, Rosita Dwi Agustin

364-368

PDF
DOI: https://doi.org/10.47577/technium.v16i.10011

Potential of Biomass Briquettes from Tropical Fruit Waste (Study Case: Durian Skin)

Praditya S. A. Sitogasa, Mohamad Mirwan, Firra Rosariawari

369-373

PDF
DOI: https://doi.org/10.47577/technium.v16i.10012

Analysis of Carbon Functional Groups through FTIR Patterns in The Preparation of Reduced Graphene Oxide (RGO)

Nur Aini Fauziyah, Dona Avrilia Kristanti, Putri Catur Kusumaningtyas, Primasari Cahya Wardhani, Pardi Sampe Tola, Teuku Andi Fadly

374-376

PDF
DOI: https://doi.org/10.47577/technium.v16i.10013

A Mini Review: Preliminary Study of Bio-Medical Physics on Development of FRRS to Reduce Pain After Heavy Activities

Primasari Cahya Wardhani, Nur Aini Fauziyah, Pardi Sampe Tola, Zakiyah Dania Billah

377-382

PDF
DOI: https://doi.org/10.47577/technium.v16i.10014

The effect of drying time on the characteristics of Bandeng Sapit during storage at room temperature

Ratna Yulistiani, Sri Winarti, Erwan Adi Saputro, Fadllur Rohmawati

383-387

PDF
DOI: https://doi.org/10.47577/technium.v16i.10015

Environmental Impact Analysis of Methane Gas from Landfill using LCA in Klotok landfill, Kediri, East Java

Restu Hikmah Ayu Murti, Muhammad Abdus Salam Jawwad, Syadzadhiya Qothrunada Zakiyayasin Nisa, Rizka Novembrianto

388-392

PDF
DOI: https://doi.org/10.47577/technium.v16i.10016

Utilization of pineapple cobs and peels for fruit leather processing

Rosida, Ulya Sarofa, Anggraeni Putri Pertiwi

393-396

PDF
DOI: https://doi.org/10.47577/technium.v16i.10017

Production Planning and Control of Flooring Using Aggregate Planning Method

Rusindiyanto, Rr. Rochmoeljati, Yekti Condro Winursito, Isna Nugraha, Hafid Syaifullah

397-404

PDF
DOI: https://doi.org/10.47577/technium.v16i.10018

Crystallography Analysis on LSCF and LSM-based Perovskite Oxides

Silvana Dwi Nurherdiana, Nikmatin Sholichah, Susilowati, Sukirmiyadi, Erwan Adi Saputro, Mohd Jumain Jalil, Hamzah Fansuri

405-410

PDF
DOI: https://doi.org/10.47577/technium.v16i.10019

Mental Workload Analysis of Workers Using the Swedish Occupational Fatigue Index (SOFI) Method at A Job Shop, Sheet Metal, And Pipe Metal Manufacturing Company in Surabaya

Mochammad Tutuk Safirin, Mega Islami, Rizqi Sari, Sinta Dewi, Enny Aryanny

411-416

PDF
DOI: https://doi.org/10.47577/technium.v16i.10020

The Influence of Hard Skills K3, Soft Skills and Work Environment on the Behavior of Implementing K3 in Welding Practices of Mechanical Engineering Study Program Students in Vocational High Schools in North Sulawesi

Parsaoran Tamba, Hendro M. Sumual

417-423

PDF
DOI: https://doi.org/10.47577/technium.v16i.10021

Phytoplankton Analysis and Mapping in Tuban Coastal Based on Chlorophyll-A Concentration Value Using Terra Modis Satellite Imagery

Siti Zainab, Novie Handajani, Minarni Nur Trilita, Primasari Cahya Wardhani

424-429

PDF
DOI: https://doi.org/10.47577/technium.v16i.10022

Enhancing Seawater Salinity through Spray-Assisted Evaporation: Investigating the Effect of Nozzle Sprayer Diameter and Feed Flowrate on Evaporation Rate using Multiple Regression Analysis

Lilik Suprianti, Nove Kartika Erliyanti, Soemargono Soemargono, Yehezkiel Hesed Providensia, Stefanus Dady Waluyo

430-435

PDF
DOI: https://doi.org/10.47577/technium.v16i.10023

Study of Statistical Quality Control (SQC) Methods in Analyzing Quality Control of Paving Block Products at PT. X

Sumiati, Nur Rahmawati, Tranggono, Dwi Sukma Donoriyanto, Minto Waluyo

436-442

PDF
DOI: https://doi.org/10.47577/technium.v16i.10025

Alternatif Design of Compliant Mechanism Based Ankle Foot Prosthesis

Wahyu Dwi Lestari, Ndaru Adyono, Ahmad Khairul Faizin, Dhian Satria Yudha Kartika, Tri Lathif Mardi Suryanto, E I Bhiftime

443-446

PDF
DOI: https://doi.org/10.47577/technium.v16i.10026

A Guideline of Earned Value Method (EVM) Implementation as Decision Baseline on Acceleration Solutions for Construction Project Scheduling

Zetta Rasullia Kamandang, I Nyoman Dita Pahang Putra, Anna Rumintang Nauli

447-453

PDF
DOI: https://doi.org/10.47577/technium.v16i.10027

Effect of the Carbon Source on the Characteristics of Silica-carbon as a Handphone’s Case Material

Srie Muljani, Erwan Adi Saputro, Kusuma Wardhani Mas’udah, Syuaibatul Islamiyah

454-459

PDF
DOI: https://doi.org/10.47577/technium.v16i.10028

Solar Tracker Design Based on Arduino Nano to Improve Solar Energy Efficiency

Anderias Henukh, Amzal Heri, Algiranto, Merta Simbolon

460-464

PDF
DOI: https://doi.org/10.47577/technium.v16i.10029

Vegetation Function Analysis in Musamus University Campus Area

Maichel Santo W. Mita, Atiza Nurhuzna, Yohannes Putra P. Sinambela, Reivandi Christal Joenso

465-469

PDF
DOI: https://doi.org/10.47577/technium.v16i.10031

Development of Structural Materials and House Construction in Merauke

Anton Topan, Biatma Syanjayanta, Saliki, Maichel S. Wijaya Mita, Aldi M. Amar Makruf

470-474

PDF
DOI: https://doi.org/10.47577/technium.v16i.10032

Heat Absorption On Walls With Red Brick Material

Muchlis Alahudin, Anton Topan, Yosi Valentina Simorangkir, Henry Soleman Raubaba

475-480

PDF
DOI: https://doi.org/10.47577/technium.v16i.10033

Development of Wall Material Usage in Merauke

Yosi Valentina Simorangkir, Anton Topan, Muchlis Alahudin, Henry Soleman Raubaba, Tiyans Syahrul Ivandy

481-485

PDF
DOI: https://doi.org/10.47577/technium.v16i.10034

Antioxidant properties of Carallia brachiata stem bark and leaf

Yenni Pintauli Pasaribu, Yorinda Buyang, Novike Bela Sumanik, La Hisa, Johanis Wairata

486-490

PDF
DOI: https://doi.org/10.47577/technium.v16i.10035

The influence of addition maja fruit peel extract as inhibitor on the corrosion rate of stainless steel and carbon steel

Sintha Soraya Santi, Ika Nawang Puspitawati, Kindriari Nurma Wahyusi, Siti Mariyatul Azizah, Kevin Nahila Wahyu Ranawijaya

491-497

PDF
DOI: https://doi.org/10.47577/technium.v16i.10162