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All Journal International Journal of Public Health Science (IJPHS) Mechatronics, Electrical Power, and Vehicular Technology
Iswanto Iswanto
Universitas Gadjah Mada
Electrical & Electronics Engineering Health Professions

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Urinoir Model as A Liquid Organic Fertilizer Producer of Nitrogen, Phospate and Potassium Sri Puji Ganefati; Adi Heru Sutomo; Iswanto Iswanto
International Journal of Public Health Science (IJPHS) Vol 3, No 1: March 2014
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.42 KB) | DOI: 10.11591/ijphs.v3i1.4671

Abstract

Environment plays role as transmission media for various kinds of environmental based diseases such as Acute Respiratory Infection (ARI), Pulmonary Tuberculosis, Diarrhoea, Poliomyelitis, Measles, Hepatitis, Thypus and Herpes. This kind of disease stills a health problem for Indonesia. The mortality survey conducted in ten provinces by Sub-Directorate of ARI of the MoH of Indonesia in 2005 found that Pneumoniae as a type of ARI diseases was the greatest cause of death among infants (22.3 %) and under-five children (23.6 %), and based on Surkesnas report in 2010, the number of Thypus cases in Indonesia increased by 20.73 %. Meanwhile, among those diseases, Thypus, Hepatitis and Herpes can be transmitted by human urine, as well. On the other hand, urine can be processed becoming organic fertilizer because it consists of essential substances for plants growth, i.e. 80 % Nitrogen and Phospate and Potassium in the rest 20 %. 75 – 90 % of the Nitrogen is in form of Urea and only the small percentage of Ammonium and Creatinine. Meanwhile, 90 – 100 % of Phosphate and Sulphur   are in dissolved inorganic form and can be directly absorbed by plants. The use of liquid organic fertilizer is able for improving soil fertility which is depraved due to the continuing use of chemical fertilizer. The aim of the research was to understand the influence of the use of urinoir model in various urine detention times, on the concentration of the yielded Nitrogen, Phospate and Potassium (K) by conducting an experiment which employed post-test design. The results showed that the various urinoir models (I, II dan III) had effect on the concentration of those three substances of the liquid fertilizer (p < 0,001), and Model I (i.e. 5 day detention time) is found as the most appropriate urinoir model in producing the N, P an K subtances in the fertilizer.
A Modified Gain Schedulling Controller by Considering the Sparseness Property of UAV Quadrotors M Qodar Abdurrohman; Reka Inovan; Ahmad Ataka; Hilton Tnunay; Ardhimas Wimbo; Iswanto Iswanto; Adha Cahyadi; Yoshio Yamamoto
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 6, No 1 (2015)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2015.v6.9-18

Abstract

This work presented the gain scheduling based LQR for Quadrotor systems. From the original nonlinear model, the system is always controllable and observable in various equilibrium points. Moreover, the linearized systems have a unique property that is known as sparse system. Hence, in order to implement the most efficient state feedback controller, post-filter and pre-filter were introduced to transform the state coordinate to decrease coupling between states. Finally, the gain scheduling systems using these facts was proposed. The system behavior was tested using the proposed controller. The numerical studies showed the effectiveness of the controller to achieve desired altitude, attitude, and its ability during the disturbance
Co-Authors Adha Cahyadi Adi Heru Sutomo Ahmad Ataka Awwalur Rizqi, Ahmad Ataka Ardhimas Wimbo Hilton Tnunay M Qodar Abdurrohman Reka Inovan Sri Puji Ganefati Yoshio Yamamoto