Pardede J.,National Institute of Technology Bandung |
Turnip M.,Prima University of Indonesia |
Manalu D.R.,Methodist University of Indonesia |
Turnip A.,Indonesian Institute of Sciences
ARPN Journal of Engineering and Applied Sciences | Year: 2015
In recording the EEG signals are often contaminated by a large of signals called artifacts such that the brain activity (source) difficult to estimate. There are different kinds of artifacts such as power line noise, electromyogram, electrocardiogram and electrooculogram. In this research, an adaptive recurrent neural network (ARNN) for estimation of source and reduction of noise from recorded EEG signals is proposed. In the experiment, the EEG signals are recorded on three conditions, which is normal conditions, closed eyes, and blinked eyes. After processing, the dominant frequency of the EEG signal is obtained in the range of 12-14 Hz either on normal conditions, closed eyes, and blinked eyes. The experimental results show that the ARNN method was effectively estimated the brain activity according to the given stimulus and remove the artifacts from all subjects. © 2006-2015 Asian Research Publishing Network (ARPN).
Sitinjak R.R.,Prima University of Indonesia |
Pandiangan D.,Sam Ratulangi University
Agrivita | Year: 2014
The aim of this study was to evaluate the effect of plant growth regulator triacontanol to the growth of cacao seedings (Theobroma cacao L.). A completely randomized design was applied using non-factorial pattern on the treatment triacontanol growing regulator substance to level: 0.0 ml/L, 0.1 ml/L, 0.5 ml/L, 1.0 ml/L and 2.0 ml/L replicated 5 times. The result shows that the given of tria-contanol significantly affected the growth of cacao seedings at the age of 14 weeks. The best tria-contanol concentration was 1.0 ml/L, which was effectively able to increase the growth of cacao seedlings; high seedlings, number of leaves, lenght of leaves, and diameter of stems respectively reached 26.21%; 3.70%; 42.28%; and 10.42% higher than the control. Plant growth regulator triacontanol was efective to increase the growth of cacao seedlings. © 2014, Agriculture Faculty Brawijaya University. All rights reserved.
Zein U.,Prima University of Indonesia
Acta medica Indonesiana | Year: 2013
to compare the anti-malarial effect among sambiloto extract, chloroquine and artemisinin-only as well as those of their combination. the study was conducted in Central Biomedical Laboratory, Faculty of Medicine, Brawijaya University, Malang, Indonesia from January to February 2006. Malaria culture used Plasmodium falciparum of Papua strain (2300) that was obtained from Namru-2 Jakarta. Five drugs applied in this test; those were chloroquine, artemisinin, the extract of sambiloto, the combination of sambiloto and chloroquine, and the combination of sambiloto and artemisinin. Parasite density was determined by counting the number of Plasmodium falciparum infected erythrocyte in 5,000 erythrocytes of the culture. Single drug (Chloroquine-only or artemisinin only) and either combination with sambiloto at dose 0.5 ug/ml had killing-effect against the parasite, measured by the appearance of "crisis form" on the infected erythrocytes. This killing-effect was dose dependent, and reached its optimum effect of 200 ug/ml. treatment of single sambiloto extract with dose 0.5 ug/ml increased the density of the parasite, however after every 1ug increasing dose of sambiloto extract, the killing effect also increased. The reduction of the parasite density was also seen by increasing the Sambiloto dose in the group of combination of sambiloto-chloroquine as well as the group of combination of sambiloto and artemisinin. Statistically, there was no difference in the anti-malaria efficacy among of five test drugs (p=1.00). The correlation between the reduction of the parasite with the increasing of dose in all groups is statistically significance (p=0.001). the extract of sambiloto in a single dose or in a combination evidently has the effect of anti-falciparum malaria.
Turnip A.,Indonesian Institute of Sciences |
Soetraprawata D.,Indonesian Institute of Sciences |
Turnip M.,Prima University of Indonesia |
Joelianto E.,Bandung Institute of Technology
Internetworking Indonesia Journal | Year: 2016
The paper considers a non-invasive brain computer interface uses EEG-SSVEP signals over visual cortex to control electronic wheelchair movement (i.e., forward, backward, left, and right). The main goal of the paper is to help people with severe motor disabilities (i.e., spinal cord injuries) and to provide them with a new way of communication and control options. In this paper, offline analysis of the data collected is used to make the user able of controlling the movement of the electronic wheelchair. The data are collected during a session in which four subjects with age about 25±1 years were tested. The adaptive-network based fuzzy inference system algorithm is then applied for the classification method with some parameters. In the offline analysis, the implemented method shows a significant performance in the classification accuracy level and it gives an accuracy level of more than 90%. This result suggests that using the adaptive-network based fuzzy inference system algorithm can improve real time operation of the current BCI system. © 2016 IIJ.
Karo-Karo U.,Prima University of Indonesia
International Journal of Pharmacy and Technology | Year: 2016
Noninfectious desease became a problem in health which must be solved seriously. The risk general factor that noninfectious desease was hypertension, high blood sugar, unnormal fat embolism and obesity. Hypertension becomes interested desease caused it caused of death. The number of the persons who have hypertension was rising from year to year. It was caused of factors. There were low potash, high natrium, les nutrition, commonly consumme animal grease, stress, smoking, and less excercising. It used quantitative research. It has been Done since March until April 2015. The object of research was police. It used systematic sampling. The collecting data was done with questioners and to measure blood pressure was done by nurses. The research finding was shown that 28% of smoking persons had high hypertension, vise versa the lowest smoking persons shown that 36.6% normal. Responden who had floaty activity was 26.8%. Medium with normal blood pressure was 32.9%. The conclusion of this research was there were relationship between smoking persons and ecercising activity with hypertension. To solve the problem above was the pearsons must be done more execises than smoking. © 2016, International Journal of Pharmacy and Technology. All rights reserved.