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.
Keyword: 

Judul: Design of wireless controller system on four wheels drive tractor equipped with image guiding techology of wireless camera
Abstrak: Traktor roda empat pengendali jarak jauh merupakan traktor konvensional yang telah dimodifikasi dengan menambahkan sistem remote pengendali jarak jauh berupa modul antarmuka SPC wireless gamepad serta kamera nirkabel sebagai pemandu citra bagi operator yang mengendalikannya. Tujuan dari penelitian ini ialah melakukan modifikasi sistem pengendalian serta menambahkan kamera nirkabel pada traktor roda empat mini Kubota B6100. Pada penelitian ini, daya minimum untuk steering ialah sebesar 22.87 Watt, tuas akselerasi ialah 0.31 Watt, sedangkan untuk tuas kopling ialah sebesar 17.54 Watt. Pengendali kopling pada penelitian bertujuan untuk menghentikan laju traktor di lahan dan memudahkan untuk pengendalian transmisi. Modul remote control digunakan untuk mengendalikan traktor dan menerima transmisi data video dari kamera nirkabel pada traktor. Kotak controller pada traktor digunakan untuk menerima perintah dari remote control pada operator dan terdiri dari komponen-komponen pendukung. Fungsi kamera nirkabel pada penelitian ini ialah untuk membantu operator dalam memantau kondisi di depan traktor dan menghindari halangan.
Keyword: wireless camera., SPC wireless gamepad interface module, Four wheels drive tractor

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