Judul: Rancang Bangun Sistem Pengendalian Nirkabel Pada Pengemudian Traktor Mini
Abstrak: The research dealt with the development of wireless control tractor operation based on SPC Wireless Gamepad Interface module. Two operation were controlled, those were steering of tractor and operation of throttle. Steering was controlled using DC gear motor 38 Watt. Mechanism to rotate the steering wheel was using pulley and timing belt. Mechanism to control throttle was using linkage mechanism. Several sensors were attached to the tractor, those were obstacle detection sensors and turning angle sensors. Ultrasonic sensors for obstacle detection, measure the distance of obstacle in front of the tractor. The distance can be measured by ultrasonic sensors between 2 until 300 cms. This system was controlled by a microcontroller unit. When there was an obstacle in front of a tractor ≤150 cm, then buzzer will ringing. The ringing of buzzer indicate that the tractor within danger. To know turning angle of tractor used linear potentiometer through results recitation of ADC (Analog to Digital Converter). From the test result shown that ADC data was linear when tractor turn to the left or to the right. It was can be seen from equation Yleft=0.0282X+885.8 and Yright=-0.266X+885.8. Similarly, control throttle mechanism was also installed linear potentiometer to determine percentage of throttle, the test results showed that the linear equation Y=-0.838X +916.8. The maximum range of tractor controlling system with SPC Wireless Gamepad Interface module was 125 meters.
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Judul: Pengujian Kinerja Traktor Mini Dengan Kendali Nirkabel
Abstrak: In untrained situation, unmanned vehicles has been implemented with Artificial Intelligence as robots. The role of the human is still needed, because in many cases robots cannot take the proper decision. The purposes of this research was to test the performance of mini tractor controlled by a wireless device using SPC Wireless Gamepad Interface. Mini tractor used in this research was the Kubota B6100 with modification in steering control system. A remote controlled DC motor was connected to the steering wheel with pulley and belt transmission. An operator with the wireless controller controlled the direction of the tractor by controlling tractor's steering through DC motor. Factors that effected of the operation were operator's visibility, land topography and maximum range of the receiver. Turning radius of a normally operated mini tractor in clockwise direction in average was 2.24 meter and counter clockwise was 2.25 meter. In remote control method, the clockwise turning radius was 2.26 meter dan counter clockwise was 2.29 meter. Tillage test was also conducted using moldboard plow. The result showed that the Effective Field Capacity of a remotely controlled mini tractor was 0.030 ha/h, with 61.0% field efficiency. By using the conventional steering by a operator, the Effective Field Capacity was 0.025 ha/h with 57.7% field efficiency.
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Judul: Daya Tahan IgY Spesifik Terhadap Influenza dan COVID-19 dalam Balsam Bibir
Abstrak: Influenza and SARS-CoV-2 virus are respiratory infections and require antiviral medications due to severe consequences. Utilization of specific immunoglobulin Y (IgY) inserted in personal care products were developed. The aim of this study was to evaluate durability of specific IgY against influenza and COVID-19 in lipbalm. The concentration of IgY used in this research was 0.1% and 0.25%. Three groups were observed: control (C) lipbalm without IgY, treatment 1 (T1) lipbalm with 0.1% IgY and treatment 2 (T2) lipbalm with 0.25% IgY. Organoleptic tests were conducted and recorded which includes the sense of smell, colour and consistency for six weeks. The presence of IgY in lipbalm was evaluated using enzyme-linked-immunosorbent-assay (ELISA) and neutralizationassay. There were some noticeable changes of organoleptic that can be observed such as colour darkened and texture hardened of the lipbalm. Most of the assays gave negative results in T1 and T2, whilst only few of them were doubtful. Our result indicated that IgY concentration of 0.1% or 0.25% in lipbalm were not optimal. However, the negative result might be due to the unavailability of IgY in the product to be dissolved in deionized water since we used beeswax as lipbalm component.
Keyword: Covid-19, egg yolk immunoglobulin Y, lipbalm, influenza