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- S. Kamalraj
- V. Gangadevi
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Sridevi, S.
- Effect of NaCl on Biochemical Changes and Endophytic Fungal Assemblages in the Leaves of a Mangrove, Ceropsis roxiphorguna Arn
Abstract Views :486 |
PDF Views:86
Authors
Affiliations
1 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai – 600 025, IN
2 Department of Botany, Annamalai University, Chidambaram – 608 002, IN
1 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai – 600 025, IN
2 Department of Botany, Annamalai University, Chidambaram – 608 002, IN
Source
Indian Journal of Science and Technology, Vol 1, No 4 (2008), Pagination: 1-7Abstract
One of the universal protective responses of plants to any type of stress is the accumulation of low-molecular organic substances such as amino acids, sugars and proteins. In this study, the effect of salinity on leaf pigments, proteins, free amino acids, proline, polyphenols, sugars and starch content was investigated. Status on endophytic fungal assemblages in the salt treated leaves of a mangrove, C. roxburghiana was studied under hydroponics pot culture. The photosynthetic pigments, sugars and protein concentrations of leaves were reduced by salinity and that the effect was aggravated by the long duration of salinity. Total contents of both chlorophyll and carotenoids decreased significantly by the treatment of NaCl. Total amino acid pool decreased by salinity, but the proline content increased only marginally. In the control, proline level did not change during the entire period of the study. The significant increase of accumulation of proline in leaves is implicated in osmotic adjustment to salinity. The endophytic fungal assemblage was also investigated. Among the 7 species, isolated Phyllosticta sp. was found frequently more when compared to other fungi. The results show that the endophytic fungi like Pestalotiopsis sp. and Phyllosicta sp. can be sustained and regenerated at low salinity condition in halophytes.Keywords
Ceriops roxburghiana, Salinity, Biochemical Changes, Endophytic FungiFull Text
References
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- A Perspective of Experiential Learning Approach Followed in Dhirajlal Gandhi College of Technology
Abstract Views :176 |
PDF Views:0
Authors
Affiliations
1 Dept. of ECE, Dhirajlal Gandhi College of Technology, Salem, Tamilnadu, IN
2 Physics Dept., Dhirajlal Gandhi College of Technology, Salem, Tamilnadu, IN
1 Dept. of ECE, Dhirajlal Gandhi College of Technology, Salem, Tamilnadu, IN
2 Physics Dept., Dhirajlal Gandhi College of Technology, Salem, Tamilnadu, IN
Source
Journal of Engineering Education Transformations, Vol 28, No Spl Iss (2015), Pagination: 322-325Abstract
In the current scenario, curriculum design of Indian engineering education need to have high impact to change the lives of engineers and scientists to sustain in the professional field. Moreover engineers are in a position to meet the elevated demand in various sectors right from financial services to manufacturing techniques. In order to meet the above demand in this competitive world, it is essential to improve the engineering curriculum design which actually refers to the entire plan of a course and its desired learning outcomes. Effective improvement in the curriculum design of undergraduate engineering education can be done with the inclusion of various experiential learning methodologies. This paper deals with the inclusion of experiential learning in terms of guiding and training the students to design the equipments needed for the laboratory of optical communication and thereby enhancing the learning of theory course of Fiber optic communication. This methodology can be facilitated during the semester holidays for the students. This paper also describes about various experiential learning methodologies and high impact teaching skills required for engineering curriculum design.Keywords
Curriculum, Engineering Education, Experiential Learning, Optical Communication.
- Binary Connectedness based ANT Algorithm for Ultrasound Image Edge Detection
Abstract Views :165 |
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Authors
Affiliations
1 Department of Electronics and Communication Engineering, Dhirajlal Gandhi College of Technology, Salem, Tamilnadu, 636001, IN
2 Muthayammal Engineering College, Rasipuram, Namakkal – DT, Tamilnadu, 637408, IN
1 Department of Electronics and Communication Engineering, Dhirajlal Gandhi College of Technology, Salem, Tamilnadu, 636001, IN
2 Muthayammal Engineering College, Rasipuram, Namakkal – DT, Tamilnadu, 637408, IN
Source
Indian Journal of Science and Technology, Vol 8, No 12 (2015), Pagination:Abstract
Congenital Heart Defects (CHD) are widely responsible for more than 10% of neonatal mortality in India. The objective of this work describes the sequential application of several techniques such as motion estimation, speckle suppression, image enhancement, image alignment and edge detection to delineate the edge structures of the fetal heart from clinical ultrasound images. The prominent image processing techniques used to localize the edge structures of fetal heart are Probabilistic Patch Based Weighted Maximum Likelihood Estimation (PPBMLE) based speckle noise suppression technique, Shock filter image enhancement technique and proposed modified edge detection with Binary connectedness based ANT algorithm. The main contribution of the proposed ANT algorithm for edge detection uses binary connectedness property among pixel intensities to efficiently update the heuristic information of ANT algorithm. The quantitative performance merit prove that the sequential application of the above mentioned image processing techniques was predominantly useful in delineating the ultrasound fetal heart structures and interpret pathophysiologic biomarkers from images.Keywords
Ant Colony Optimization, Binary Connectedness, Congenital Heart Disease, Detection Morphology, EdgeFull Text
- Performance Analysis of Priority based Congestion Control for Heterogeneous Traffic in Multipath Wireless Sensor Networks
Abstract Views :136 |
PDF Views:1
Authors
Affiliations
1 Department of Computer Science and Engineering, Sona College of Technology, Salem, Tamilnadu, IN
1 Department of Computer Science and Engineering, Sona College of Technology, Salem, Tamilnadu, IN
Source
Wireless Communication, Vol 4, No 9 (2012), Pagination: 482-487Abstract
In wireless sensor network, the highly important problem to be considered is congestion. Congestion in a wireless sensor network can cause packet loss, which in turn reduces throughput and energy efficiency. Different priorities are set for different types of data generated in heterogeneous wireless sensor networks. In multi path routing, the data flow is forwarded in multiple paths to the sink node. In this paper we analyze the performance of a priority based congestion control for heterogeneous traffic in multi path wireless sensor network. We have considered the nodes that have multiple applications running with different priorities. The parent node of each sensor node allocates the bandwidth among its child nodes based on the source traffic priority and transit traffic priority of the data from heterogeneous applications in the child nodes. Packet service ratio is used to detect the congestion. The proposed work is simulated in NS2. The results are shown based on the evaluation of delay, loss and throughput through X-graph and performance is better when compared with PCCP protocol.
Keywords
Congestion Control, Heterogeneous Traffic, Multi Path, Priority.- Performance Evaluation of Quality Based Bidirectional Reliability Protocol for Wireless Sensor Networks
Abstract Views :132 |
PDF Views:1
Authors
Affiliations
1 Department of Computer Science and Engineering, Sona College of Technology, Salem, TamilNadu, IN
1 Department of Computer Science and Engineering, Sona College of Technology, Salem, TamilNadu, IN
Source
Wireless Communication, Vol 4, No 9 (2012), Pagination: 506-512Abstract
Wireless sensor network consists of sensor nodes with limited battery power. In our protocol energy conservation is provided through clustering and bidirectional reliability. Bidirectional reliability includes event reliability and query reliability. Event detection is made possible with collective information received from many sensor nodes. But this increases congestion in the network and reduces the network life time. So we go for quality based event detection by classifying nodes as essential and non-essential nodes after which clustering is done. This classification is based on contribution degree and remaining energy. Many clusters are formed to cover the entire sensing field. In each cluster essential node communicates with sink node whereas nonessential node communicates only with essential nodes and they do not report event information to the sink node. The query information transmitted by the sink node is received only by essential nodes and then forwarded to non-essential nodes. Thus our proposed protocol achieves the bidirectional reliability between sink node and essential nodes. We have evaluated the performance of QBRP through simulation experiments. The simulation results show that QBRP achieves higher performance in terms of energy consumption, communication delay, and jitter.
Keywords
Wireless Sensor Network, Contribution Degree, Essential Node, Event Reliability, Query Reliability, Bidirectional Reliability.- A Novel Technique for Compressing MRI Image Based on CROI
Abstract Views :160 |
PDF Views:3
Authors
Source
Software Engineering, Vol 6, No 2 (2014), Pagination: 51-54Abstract
Many image compression techniques have been developed for compressing medical images. These compression algorithms produce high compression rate with affordable loss in important region of images. But here a CROI based hybrid technique for the compression of Magnetic Resonance Image is proposed, in which Contextual Listless SPIHT algorithm is used. In this paper, the CROI (important information) and the BG (low priority information) were separated .Then CROI is priority information) were separated .Then CROI is encoded separately with high bpp and the BG is encoded separately with low bpp. Finally, the two regions are merged for reconstructing the original image.Keywords
BG, CLSPIHT, CoC, CR, CROI, MRI, PSNR.- Bi-Intentional Fault-Tolerant Model for Workflow Scheduling on Grids
Abstract Views :161 |
PDF Views:3
Authors
Affiliations
1 Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, IN
1 Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, IN
Source
Networking and Communication Engineering, Vol 2, No 5 (2010), Pagination: 117-123Abstract
The spur of Grid computing is to aggregate the power of widely dispersed resources, and provide non-trivial services to users. In attempts to utilize a diverse set of resources in grids proficiently, scheduling has been made. The primary intention of scheduling is the minimization of application completion time; however, they may lead to the usage of excess and redundant resources. Our algorithm performs the scheduling by accounting for both completion time and resource usage. Since the performance of grid resources changes dynamically and the accurate estimation of their performance is very difficult, our algorithm incorporates rescheduling to deal with unforeseen performance fluctuations effectively. Also, fault tolerance is an essential part of the grid. In Grid environments, execution failures can occur for various reasons such as network breakdown, failure or non-availability of required resources. Fault tolerance can be achieved in grids by Over provisioning and Check pointing techniques. Since, over provisioning violates the resource usage control, check pointing strategy is implemented in our proposed method.Keywords
Fault Tolerant, Grid Scheduling, Makespan, Resource Optimization, Workflow Applications.- A Novel Medical Image Compression Technique using 3d Wavelet
Abstract Views :172 |
PDF Views:2
Authors
P. Jeyarani
1,
S. Sridevi
1
Affiliations
1 Sethu Institute of Technology, IN
1 Sethu Institute of Technology, IN
Source
Digital Image Processing, Vol 5, No 3 (2013), Pagination: 161-165Abstract
Medical Image Compression in 3D is one of the growing research fields in biomedical applications. Three dimensional (3D) medical images are increasingly used in many clinical and research applications. The problem is whether to compress the image slices in lossy or lossless compression schemes. Propose a feature based classification frame work in order to categorize the Slices as normal or abnormal. After categorization normal slices are subjected to lossy compression and abnormal slices are subjected to lossless compression. The Gray Level Co-occurrence Matrix (GLCM) is constructed to extract the spatial features from the selected image slices. The feature vectors obtained from the GLCM are given as input to the SVM classifier for classification. Performance of SVM classification is validated and prone the categorized result to the appropriate Compression schemes. Compression will be experimentally validated by calculating compression ratio.Keywords
Feature, GLCM, Lossy Compression, Lossless Compression, SVM.- Wagner's Law in Developing Countries: Evidence from Time Series Analysis
Abstract Views :359 |
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Authors
Source
Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 37, No 3 (1995), Pagination: 231-250Abstract
The objective of this study is to verify Wagner's law in the context of a group of twenty developing countries with the aid of elasticity, casuaity, cointegration and error-correction approaches. The cointegration tests confirm the presence of long-run relationship between national income and government expenditure in most of the sample countries. Though the evidences from elasticity, Granger causality test and error-correction models are somewhat mixed, the overall weight of the findings is in favour of the law. This revealation, however, is significant especially when several previous studies have questioned the validity of the law by relying exclusively on the Granger tests.- Generalization of Rayleigh Maximum Likelihood Despeckling Filter Using Quadrilateral Kernels
Abstract Views :170 |
PDF Views:0
Authors
S. Sridevi
1,
S. Nirmala
2
Affiliations
1 Department of Electronics and Communication Engineering, Paavai Engineering College, IN
2 Centre for Advanced Research, Department of Electronics and Communication Engineering, Muthayammal Engineering College, IN
1 Department of Electronics and Communication Engineering, Paavai Engineering College, IN
2 Centre for Advanced Research, Department of Electronics and Communication Engineering, Muthayammal Engineering College, IN
Source
ICTACT Journal on Image and Video Processing, Vol 3, No 3 (2013), Pagination: 559-564Abstract
Speckle noise is the most prevalent noise in clinical ultrasound images. It visibly looks like light and dark spots and deduce the pixel intensity as murkiest. Gazing at fetal ultrasound images, the impact of edge and local fine details are more palpable for obstetricians and gynecologists to carry out prenatal diagnosis of congenital heart disease. A robust despeckling filter has to be contrived to proficiently suppress speckle noise and simultaneously preserve the features. The proposed filter is the generalization of Rayleigh maximum likelihood filter by the exploitation of statistical tools as tuning parameters and use different shapes of quadrilateral kernels to estimate the noise free pixel from neighborhood. The performance of various filters namely Median, Kuwahura, Frost, Homogenous mask filter and Rayleigh maximum likelihood filter are compared with the proposed filter in terms PSNR and image profile. Comparatively the proposed filters surpass the conventional filters.Keywords
Rayleigh Maximum Likelihood Estimator, Speckle Suppression, Statistical Inference, Quadrilateral Kernel, Homogeneity Region.- Bottleneck Analysis of an Automobile Industry Component
Abstract Views :216 |
PDF Views:0
Authors
Affiliations
1 Department of Mechatronics Engineering, Bharath University, Chennai-600073, Tamil Nadu, IN
1 Department of Mechatronics Engineering, Bharath University, Chennai-600073, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 31 (2015), Pagination:Abstract
Work study is that body of knowledge concerned with the analysis of the work methods and the equipment used in performing a job, the design of an optimum work method and the standardization of proposed work methods. Time study is a technique of work measurement used for determining the time necessary to carry out a given activity at a defined standard of performance. A stop watch is used for the purpose of recording the actual time taken by the worker under observation to perform various elements of the work or task. The main objectives of the work and time study are to analyze the present method of doing a job, systematically in order to develop a new and better method, to increase the productivity by ensuring the best possible use of human, machine and material resources and to achieve best quality product/ service at minimum possible cost.Keywords
Minimum Cost, Time Study, Work StudyFull Text
- Reactivity Ratios Determination of Methacrylonitrile with Isobornyl Methacrylate by 1H NMR Spectroscopy
Abstract Views :178 |
PDF Views:1
Authors
Affiliations
1 Department of Chemistry, Aurola Degree College, KUC ‘X’ Road, Vidyaranyapur, Warangal (A.P.), IN
2 Department of Chemistry, Kakatiya University, Warangal (A.P.), IN
1 Department of Chemistry, Aurola Degree College, KUC ‘X’ Road, Vidyaranyapur, Warangal (A.P.), IN
2 Department of Chemistry, Kakatiya University, Warangal (A.P.), IN
Source
The Asian Journal of Experimental Chemistry, Vol 4, No 1-2 (2009), Pagination: 31-36Abstract
Copolymer of Methacrylonitrile (MAN) with Isobornyl methacrylate (IBM) has been studied by free radical polymerization using 1,1' azo bis (cyclohexanecarbonitrile) (VAZO) as initiator in Dimethyl formamide (DMF) at 60±1oC. The monomer reactivity ratio was computed by both Fineman-Ross (F-R) and Kelen-Tudos (K-T) methods. The reactivity ratio values suggested the formation of random copolymers which has been supported by the azeotropic composition evaluation. The mean sequence length (n) and probabilities (p) in the formation of various structurally units were evaluated. The molecular weights of the polymers were determined by gel permeation chromatography and they increase with increasing MAN content. The solubility parameters were determined with viscometric method. The glass transition temperature (Tg) of the copolymers were determined by differential scanning calorimetry (DSC). Thermo gravimetric analysis (TGA) of the copolymer was studied. The dielectric properties of the copolymer like the dielectric constant and dielectric loss were studied. The results have been compared with methacrylonitrile and isobornyl acrylate (MAN-IBA) system.Keywords
Methacrylonitrile, Isobornyl Methacrylate, Copolymerization, Reactivity Ratios, Thermal and Dielectric Properties.- Assessment of Psychological Well-Being among Religious Practitioners
Abstract Views :319 |
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Authors
Affiliations
1 Department of Psychology, Annamalai University, Chidambaram, Tamil Nadu, IN
2 Department of Clinical Psychology, Annamalai University, Tamil Nadu, IN
3 Department of Psychology, Annamalai University, Tamil Nadu, IN
1 Department of Psychology, Annamalai University, Chidambaram, Tamil Nadu, IN
2 Department of Clinical Psychology, Annamalai University, Tamil Nadu, IN
3 Department of Psychology, Annamalai University, Tamil Nadu, IN
Source
Indian Journal of Health and Wellbeing, Vol 8, No 11 (2017), Pagination: 1281-1284Abstract
The present study aimed to assess the level of psychological well-being among religious practitioners. Present study was conducted on 250 subjects, selected through random sampling technique. For statistical analysis 't'-test, ANOVA and Pearson's Correlation were applied. Ryff's Psychological Well-being Scale (1995) was used to assess the level of psychological well-being among practitioners. Findings indicate that male and daily practitioners have higher psychological well-being than female and occasionally practitioners, also above 45 years age group have higher psychological well-being than 15-25 and 26-45 years age group. Further the findings indicate that Muslim practitioners have high psychological well-being than Christian and Hindu practitioners respectively. Results also revealed that there is significant relationship found between variables.Keywords
Psychological Well-Being, Age, Gender, Practice and Religion.- A Study to Find Barriers for Physical Activity among Chronic Kidney Disease Patients
Abstract Views :595 |
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Authors
Affiliations
1 Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), IN
1 Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 450-455Abstract
Introduction: Physical inactivity has various harmful effects but in case of chronic diseases patients perceive various barriers for physical activity. This study aims to find such barriers in Chronic Kidney Disease patients.
Methodology: This is an observational study conducted in dialysis unit of a tertiary care hospital with 104 both female & male patients of age group 40–60 years undergoing hemodialysis (HD) at least for past 6 months. Patients with recent MI, stroke & with physical impairment were excluded. Consented patients participated .Human Activity Profile Questionnaire (HAP) was used to assess the patient’s physical activity level and patient related perceived barriers for physical activity .
Result: Among 104 patients, male-female ratio was 62:42, mean age was54.56 years, mean dialysis vintage was 27.85 months (range 6-120 months). Hypertension (91.3%), Diabetes (53.8%) were most frequent chronic co-morbidities. According to MAS and AAS of HAP, 55.8%, 43.3%, 1% patients were respectively impaired, moderately active & active. The most frequently reported barriers were fatigue or tiredness (54.8%), shortness of breath (51.9%) (p 0.03), fear of getting hurt (22.1%), body pain (21.2%). Other reported barriers are joint pain, family protection, lower limb swelling, foot ulcer, chest pain, less self confidence, anxiety, overstressed, depression. Shortness of breath is the most influential barrier and statistically significant (p0.04).
Conclusion: There were a number of patient related perceived barriers for physical activity were identified and among that fatigue & SOB were found to be influential factors.