JiTEKH

Analisis Karotenoid dan Glukosa pada Produksi Serbuk Jahe Merah (Zingiber officinale Rosc. var Rubrum) terhadap Variasi Suhu dan Kadar Gula

Rachma Nisa Nuramalia, Dessy Agustina Sari — Wed, 27 Mar 2024 00:00:00 +0000

This study aims to analyze total carotenoids and total sugar in red ginger powder products by involving variations in sugar content and process temperature. The process of making red ginger powder utilizes an evaporation process with rock sugar as a crystallization agent to help the crystallization process. The raw material is red ginger as the main material, both fresh and pulp. Then, the variables during the study were operating temperature (80 and 90^oC) and sugar content (60 and 100%). The parameters analyzed were total carotenoids and total sugar in the red ginger powder samples. The results of the total carotenoid analysis showed that the treatment of red ginger with a temperature of 90^oC and 60% rock sugar content provided optimum conditions both in terms of fresh raw materials and pulp. This result was also achieved in red ginger powder and ready-to-consume beverage products, which ranged from 11.70 to 16.23%. Furthermore, the best total glucose analysis results were at the same temperature as the highest carotenoid values. Meanwhile, the highest sugar content (100%) was able to provide higher total glucose than the 60% contribution of rock sugar in both raw material conditions and the form of processed red ginger products.

Implementasi Node Bridge Untuk Meningkatkan Komunikasi Multi-Node Modul NRF24L01 Pada NLOS

Abdi Purwanto, Redi Ratiandi Yacoub, Neilcy Tjahjamooniarsih — Sat, 30 Mar 2024 00:00:00 +0000

Multi-node communication is an important aspect in wireless system development, especially in the context of non-line of sight communications. In this study, we explore the implementation of multi-node communication with bridge nodes to increase distance and reduce packet loss in the NRF24L01 transceiver module. The aim of writing this manuscript is to evaluate the effectiveness of using bridge nodes in improving the quality of multi-node communications on the NRF24L01 module in non-line of sight conditions. This study was carried out through a series of multi-node communication tests with certain configurations, including maximum power usage, 250kbps bit rate, and 5dBi antenna. Tests were carried out at different distances with and without the use of bridge nodes to compare communication performance. Our findings show that a configuration with three client nodes and an NRF24L01 module equipped with a 5dBi antenna is capable of achieving the longest distance of up to 125 m. In non-line of sight conditions, the packet loss rate at a distance of 25-75 m has very good communication quality, with packet loss values ranging from 0-6%. However, at a distance of 100 m, the packet loss percentage exceeds the threshold (15%). The use of bridge nodes succeeded in significantly reducing the packet loss rate, reducing the percentage of packet loss at client nodes C1, C2, and C3 to 6.00%, 6.67%, and 6.33% respectively. Thus, implementing the bridge node has proven effective in improving the quality of communication on the NRF24L01 module in non-line of sight conditions.

Rancang Bangun Sistem Kendali dan Pemantauan Ketinggian Air Pada Panci Penguapan Terbuka Berbasis Website

Fredericus Dandani Dolf, F. Trias Pontia Wigyarianto, Hendro Priyatman — Thu, 25 Apr 2024 00:00:00 +0000

During the dry season, the water evaporation process experiences a significant increase resulting in a rapid decrease in water volume. Conversely, during the rainy season, the open evaporation pan can quickly fill up with rainwater, often causing overflow that disrupts the evaporation measurement process, thus requiring manual intervention to drain or refill the evaporation pan. One proposed solution to address this issue is by implementing an automatic water control system, water temperature monitoring, and water level measurement. The system design consists of two main aspects, namely hardware and software design. Hardware design involves creating a system block diagram and electronic circuit schematic diagrams. Meanwhile, software design includes program and WEB interface design. This research method involves the use of JSN-SR04T ultrasonic sensor, DS18B20 temperature sensor along with ESP32 DevKitC V4 device. Based on the test results, the ultrasonic sensor showed the highest error value of 19.38% with an average error percentage of 4.62% from 55 test runs. Meanwhile, the highest error value on the temperature sensor reached 3.46%, with an average error percentage of 1.46%. Sensor readings, pump status, and solenoid valve status are displayed in real-time on an LCD and Thinger.io dashboard.

Menganalisis dan Merancang Ulang User Interface Sistem Informasi Perpustakaan dengan Metode User-Centered Design

Fri, 26 Apr 2024 04:40:55 +0000

The Library Information System has an unattractive interface. This is evidenced by the distribution of satisfaction questionnaires to a number of people from the IT Del community, including students, lecturers, and staff who think that the PI Del Library Information System user interface (SIPP) is less attractive so that users experience difficulties in carrying out activities in the system such as finding books that are wanted. SIPP User Interface redesign aims to improve the appearance of the user interface on the system. The purpose of this study was to redesign the user interface of the library information system, in accordance with User Centered Design (UCD) and improve the usability component of the standard user interface. s In this study the User-Centered Design (UCD) methodology was used in the process of redesigning the user interface. SIPP. In the UCD methodology, 3 iterations were carried out. Each iteration is carried out with 4 research stages. In the process of planning the human centered process, the user context is determined, in the specify the context of use stage, user needs are determined using personas, in the specify user and organizational requirements stage, an evaluation is carried out for users regarding the current system, in the produce design solution stage, it is carried out temporary design from the results of user-centered system evaluation, and the evaluate designs against user requirements stage is re-evaluated by users against the results of the temporary design in the form of wireframes and submitted a questionnaire as a form of assessment to compare each iteration. The new design is in the form of improving the page appearance of the PI Del Library Information System with a User Centered Design process. The UCD process is carried out with 3 iterations