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Shankar, P.
- Fuzzy Logic Controller based MPPT Method for the Photovoltaic Power System
Authors
1 Saveetha School of Engineering, Saveetha University, IN
Source
Artificial Intelligent Systems and Machine Learning, Vol 5, No 12 (2013), Pagination: 477-481Abstract
The global electrical energy demand is increased gradually and the power generation is not meeting consumer demand due to deficit of fossil. In this paper we have been studying and analysis of the Photovoltaic power system operation and electrical characteristics. The PV power system is environmentally friendly such as no pollution and global warming effect. The PV power system is one of the best renewable energy sources and clean energy. This project we have been designed fuzzy logic controller for to track the Maximum power point for a 1.5 KW PV system under various climate. The proposed model has been designed Matlab software and analysis the simulation results then we have proved the effectiveness of the proposed MPPT method for the system.
Keywords
Intelligent Control, Photovoltaic Cell, MPPT.
- Batch Biosorption Studies for the Removal of Chromium
Authors
1 VMKV Engineering College, Salem, Tamilnadu, IN
2 Vikas College of Pharmacy, Suryapet, Andhra Pradesh, IN
3 Nalanda College of Pharmacy, Nalgonda, Andhra Pradesh, IN
4 SASTRA University, Thanjavur, Tamilnadu, IN
Source
Asian Journal of Research in Chemistry, Vol 3, No 2 (2010), Pagination: 346-350Abstract
Batch sorption experiments were carried out using a novel adsorbent, Acid treated Pongamia Leaf Powder (APLP) and Acid treated Neem Leaf Powder (ANLP), for the removal of Chromium(VI) from aqueous solutions. Potential of APLP and ANLP for adsorption of chromium from aqueous solution was found to be excellent. Effects of process parameters pH, contact time and adsorbent capacity were studied. Langmuir model represent the experimental data well. Maximum dye uptake was found indicating that APLP and ANLP can be used as an excellent low-cost adsorbent. Comparison of adsorption capacity of APLP and ANLP for chromium clearly indicates that the capacity of APLP for adsorption of chromium is quite high than ANLP. It can be expected that APLP and ANLP would have similar capacities for dyes with similar molecular weight, structure and/or ionic load. Thus, the naturally defoliated the Pongamia and Neem leaf powders a low-cost natural resource, can be effectively used to remove pollutants from effluents.- Effect of Positive Dental Video on Dental Anxiety in Children Using Chota Bheem-Chutki Scale
Authors
1 Department of Paedodontics and Preventive Dentistry, SRM Dental College, Ramapuram, Chennai, IN
2 Department of Paedodontics and Preventive Dentistry, Sree Balaji Dental College & Hospital, Chennai, IN
3 Department of Paedodontics and Preventive Dentistry, SRM Dental College, Ramapuram, Chennai, IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 2320-2324Abstract
Context: Dentists should detect the patient’s level of anxiety and eliminate the anxiety prior to the treatment to provide a successful treatment and to establish a positive attitude towards dentistry
Aim: To evaluate the effect of exposure to positive dental experience video on dental anxiety among 6 to 11 years old children using Venhams picture test and Chota Bheem-Chutki scale.
Method and Material: Hundred children between 6 to 11 years were selected randomly for the study. Pre intervention anxiety level was recorded using Chota Bheem Chutki scale (CBCS) and Venham picture test (VPT) while the children were sitting in the waiting area. After that the positive dental experience video was shown to the children for 2 minutes. Later, the anxiety level of children was again measured using both the scales. That was taken as the post intervention scores..
Statistical analysis used: All the scores were statistically analyzed by SPSS version 22. Paired t test was used to compare the scores obtained from both the scales and Pearson correlation test was performed to obtain correlation among the scales used in the study.
Results: The mean anxiety score of children before intervention and after intervention using VPT was 3.25 ± 1.67 and 0.43 ± 1.32; for CBCS was 1.84 ± 0.71 and 1.05 ± 0.21. The difference between intervention and after intervention value was highly statistically significant p-value <0.001
Conclusions: This study showed that exposure to positive dental video can significantly reduce anticipatory dental anxiety in children.