IONTech Journal

FORMULATION AND PHYSICAL CHARACTERIZATION OF BETA-CAROTENE-BASED PUMPKIN (Cucurbita moschata) POWDER CLAY MASK

Dewi Rahma Fitri — 2026-08-04

Beta-carotene is a natural carotenoid compound known as a provitamin A and antioxidant. One potential natural source of beta-carotene is pumpkin (Cucurbita moschata D.). This study aimed to determine the beta-carotene content in pumpkin flesh powder using High-Performance Liquid Chromatography (HPLC), formulate it as an active ingredient in clay mask preparations, and evaluate the physical characteristics of the resulting formulations. The results showed that the beta-carotene content in pumpkin flesh powder was 5.306 mg/g. The samples showed retention times relatively close to that of the beta-carotene standard, with retention times of 6.143 and 6.115 minutes, while the standard showed a mean retention time of 6.180 minutes. The pumpkin flesh powder was then formulated at three concentrations: F1 (1%), F2 (1.5%), and F3 (2%). Physical evaluation showed that the three formulations had relatively similar organoleptic characteristics, were homogeneous, and had pH values of 6.15, 5.40, and 5.47, respectively. The drying times of F1, F2, and F3 were 15 minutes 43 seconds, 19 minutes 20 seconds, and 21 minutes 27 seconds, respectively. Viscosity testing showed a decrease in viscosity with increasing RPM, indicating a tendency toward pseudoplastic flow behavior. Based on these findings, pumpkin flesh powder has potential as an active ingredient in clay mask formulations.

RISK MANAGEMENT ANALYSIS BASED ON ISO 31000 ON THE OPERATIONAL ASPECTS OF INFORMATION TECHNOLOGY OF PT. SCHLUMBERGER GEOPHYSICS NUSANTARA

Yogi Kamal — 2026-08-16

Schlumberger Geophysics Nusantara is a leading multinational company providing integrated technology and services to the oil and gas industry in Indonesia. The company relies on the cloud-based DELFI platform to support its operational activities. This high dependence on information technology (IT) systems creates various operational risks that require systematic management. This study analyzes IT operational risk management using the ISO 31000:2009 framework through a descriptive qualitative approach. Data were collected through structured interviews with the Project Manager and Account Manager of the Digital & Integration Division. Risk assessment was conducted using a likelihood × impact matrix on a 1–5 scale. The results identified 14 IT operational risks, with 9 risks (64.29%) classified as High and 5 risks (35.71%) classified as Moderate. The highest-rated risks were DELFI system downtime, cyberattacks, and data breaches, each with a risk score of 20. The ISO 31000:2009 framework provides a structured approach for identifying, evaluating, and prioritizing risk treatment to support the continuity of the company's IT operations.

USABILITY MEASUREMENT OF GOOGLE DRIVE AS A DATA STORAGE AND COLLABORATION PLATFORM FOR INFORMATION SYSTEMS STUDENTS

Pramesthi Purwa Pinayungan — 2026-08-31

Google Drive is one of the cloud-based storage platforms widely used by students to support academic activities, such as storing documents, sharing files, and collaborating in groups. The high usage of Google Drive has prompted the need to assess the extent to which this service is user-friendly from the users’ perspective. This study aims to investigate the usability of Google Drive as a data storage and collaboration tool for students in the Information Systems Study Program. This study employed a descriptive quantitative method with a survey approach. Data were collected by distributing a questionnaire to 31 students who actively use Google Drive in their academic activities. The research instrument was designed based on Nielsen’s five dimensions of usability, namely learnability, efficiency, memorability, errors, and satisfaction, using a 1–5 Likert scale. The findings of this study indicate that the usability level of Google Drive scored an average of 4.16, which falls into the high category. The satisfaction dimension received the highest score of 4.35 followed by efficiency with a score of 4.29, memorability at 4.16, learnability at 4.10, and errors at 3.89. These results indicate that Google Drive is highly effective in meeting students’ academic storage and collaboration needs. However, certain aspects related to error handling and the clarity of information provided when issues arise still require attention to enhance the user experience

APPLICATION OF SIMPLE ADDITIVE WEIGHTING (SAW) FOR OPTIMIZING PROJECT PRIORITIZATION OF TRANSMISSION AND SUBSTATION INFRASTRUCTURE

Dani Dwi Putra — 2026-08-31

The acceleration of power infrastructure development demands efficient resource allocation within engineering enterprises, as conventional project prioritization methods often suffer from high subjectivity, prolonged processing times, and a lack of comparative data analysis across multi-criteria parameters. This study aims to design and develop a web-based decision support system integrating the Simple Additive Weighting (SAW) method to generate a systematic and objective project priority ranking. Utilizing a descriptive qualitative approach combined with software engineering principles, data was collected through field observations, literature reviews, and in-depth interviews with project management experts to determine weights for six distinct cost and benefit criteria, while system functionalities were validated using the black box testing method. The results and discussion demonstrate that the integrated web system successfully executed multi-criteria processing and dynamically filtered out completed projects, with Project A5 (PRJ-005) emerging as the primary priority with the highest preference score of 0.7813, driven by its high urgency index, while black box testing confirmed that all system interfaces and role-based access controls functioned validly with zero logic defects. In conclusion, the deployment of the web-based SAW system provides a more structured and measurable decision-making framework for power engineering enterprises, although future work should integrate sensitivity analysis and Spearman rank correlation validation against expert actual historical decisions to enhance the model's stability.

DETECTION OF MEDICINAL CHEMICALS IN HERBAL MEDICINE FOR MUSCLE ACHES: AN AUTHENTICATION STUDY USING THIN-LAYER CHROMATOGRAPHY

Pra Panca Bayu Chandra — 2026-08-31

High public interest in traditional medicines is partly driven by the perception that herbal medicines are safer and more affordable than modern pharmaceuticals. However, this condition may be exploited by irresponsible manufacturers who illegally add medicinal chemicals to traditional herbal products. One of the medicinal chemicals reported in pegal linu herbal medicines is paracetamol. Improper use of paracetamol may increase the risk of toxicity, particularly hepatotoxicity. This study aimed to identify the presence of paracetamol in pegal linu herbal medicines circulating at Deprok Market, Cipinang Muara, using Thin-Layer Chromatography (TLC). A descriptive study was conducted using five pegal linu herbal medicine samples obtained from several herbal medicine retailers through accidental sampling. Identification was performed using silica gel GF254 plates as the stationary phase and a chloroform:methanol (9:1) mixture as the mobile phase. Spots were observed under ultraviolet light at 254 and 366 nm by comparing the retention factor (Rf) values of the samples with those of a paracetamol reference standard and positive controls. The Rf values obtained were 0.80 for sample A, 0.56 for sample B, 0.60 for sample C, 0.34 for sample D, and 0.44 for sample E. The presence of paracetamol was determined based on the similarity of the Rf values between the samples, reference standard, and positive control under the same TLC conditions.

DEVELOPMENT OF A WEB-BASED INVENTORY INFORMATION SYSTEM WITH A REORDER POINT (ROP) FEATURE FOR INVENTORY MANAGEMENT OPTIMIZATION

Puja Febricia — 2026-08-31

Inventory management at CV. Dwiasta Konstruksi is still performed manually using Microsoft Excel, potentially resulting in disorganized records, delays in reordering, and stock shortages. This study aimed to develop a web-based inventory information system by implementing Reorder Point (ROP) to support inventory monitoring and determine the appropriate time for reordering. The system was developed using the Rapid Application Development (RAD) method, consisting of requirements planning, system design, and implementation. The system was developed using PHP, HTML, CSS, JavaScript, and MySQL and included features for item data management, incoming and outgoing transactions, inventory reports, ROP calculation, and stock notifications. System functionality was evaluated using Black Box Testing, while user evaluation was conducted using a Likert-scale questionnaire. The system successfully implemented inventory management functions and applied ROP as the basis for providing notifications when stock reaches the reorder point. Black Box Testing showed that all tested functions operated according to the specified requirements. Evaluation by 14 users resulted in a mean score of 4.75, categorized as very good, with a feasibility percentage of 94.93%. The developed system can support inventory recording, monitoring, and more systematic determination of reordering time.