Refine your search
Collections
Co-Authors
- C. M. Radika
- Lal Rishikant
- R.N.K. Sharma
- S. Rengarajan
- N. Srinivasan
- P. Govindarajulu
- K. Balasubramanian
- J. Arunakaran
- S. Singh
- S. Yuvaraj
- C. Parthasarathy
- T. Malini
- R. llangovan
- M. Balaganesh
- S. Sittadjody
- M. Sridhar
- R. C. Vignesh
- B. Ravi Sankar
- M. Michael Aruldhas
- S. Soudamani
- Marcus Karnan
- A. Arun Kumar
- W. D. Sam Solomon
- Rahul A. Kumar
- P. R. Vijai Anand
- R. Venkatnarayanan
- S. Manthira Moorthi
- D. Dhar
- Rajesh Shukla
- P. R. Vijayanand
- P. Kumar Nallasivan
- Smita R. Priyadarshini
- Pradyumna Ku Sahoo
- Swagatika Panda
Journals
- Indian Journal of Physiotherapy & Occupational Therapy-An International Journal
- Journal of Hospitality Application and Research
- Journal of Endocrinology and Reproduction
- Artificial Intelligent Systems and Machine Learning
- Current Science
- Asian Journal of Pharmaceutical Research and Health Care
- Asian Journal of Research in Chemistry
- Indian Journal of Public Health Research & Development
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Sivakumar, R.
- Analysis of the Influence of Fear of Fall on the Score of Berg Balance Scale among the Elderly Population
Abstract Views :347 |
PDF Views:0
Method: 50 elderly individual in the age range of 65 to 74 years were recruited. Tinetti Fall Efficacy scale was administered to quantify the fear of fall in them. Berg Balance Scale was administered. Confidence to do the Berg Balance Scale was measured with Visual Analogue Scale. Counseling and placebo exercise training was given to improve their ability to perform ADL and Berg Balance Scale. Pre and Post counseling with training data was analysed. Correlation between scores of Tinetti Fall Efficacy scale and Berg Balance Scale was identified.
Results: Higher level of correlation was found between Tinetti Fall Efficacy and Berg Balance Scale. There was a significant change found the in the scores of both the scales with counseling and placebo training.
Conclusion: Fear of fall has to be considered while measuring balance with Berg Balance Scale and counseling prior to evaluation will improve the quality of the measurement.
Authors
R. Sivakumar
1,
C. M. Radika
2
Affiliations
1 Reader in Physiotherapy, IN
2 Sri Ramachandra University, Porur, Chennai 116, IN
1 Reader in Physiotherapy, IN
2 Sri Ramachandra University, Porur, Chennai 116, IN
Source
Indian Journal of Physiotherapy & Occupational Therapy-An International Journal, Vol 6, No 3 (2012), Pagination: 262-265Abstract
Background: Fear of fall felt by the elderly population even in the absence of incidence of fall can affect their mobility. It can also expected to affect the scoring of Berg Balance Scale. This study is done to analyse this impact of fear of fall on score of Berg Balance Scale.Method: 50 elderly individual in the age range of 65 to 74 years were recruited. Tinetti Fall Efficacy scale was administered to quantify the fear of fall in them. Berg Balance Scale was administered. Confidence to do the Berg Balance Scale was measured with Visual Analogue Scale. Counseling and placebo exercise training was given to improve their ability to perform ADL and Berg Balance Scale. Pre and Post counseling with training data was analysed. Correlation between scores of Tinetti Fall Efficacy scale and Berg Balance Scale was identified.
Results: Higher level of correlation was found between Tinetti Fall Efficacy and Berg Balance Scale. There was a significant change found the in the scores of both the scales with counseling and placebo training.
Conclusion: Fear of fall has to be considered while measuring balance with Berg Balance Scale and counseling prior to evaluation will improve the quality of the measurement.
Keywords
Tinetti Fall Efficacy Scale, Fear of fall, Berg Balance Scale
- Geoinformatics in Tourism-a Case Study
Abstract Views :373 |
PDF Views:1
Authors
Affiliations
1 CSRE, IIT, Bombay.
2 Department of Remote Sensing, BIT, Mesra.
1 CSRE, IIT, Bombay.
2 Department of Remote Sensing, BIT, Mesra.
Source
Journal of Hospitality Application and Research, Vol 3, No 2 (2008), Pagination: 67-75Abstract
Tourism is first about gathering information about a geographically located place and then travelling to it. The method of gathering information about a tourist place to visit is dependent on the means and technology available at that relevant time. Out of the various tools that are available for the purpose, the most powerful emerging tool is Geoinformatics: i.e. dynamic non spatial attribute information linked with spatial information. In the present case study, some of the capabilities of Geoinformatics are explored as applicable to tourism for a major pilgrim place Devghar, in Jharkhand State.Arc View GIS software, have been used to customize, keeping in mind, the various entities to be used for the particular study area useful for tourist information system of the place, after the generation of various thematic information. Though some database inventory was made using secondary data for the study, an additional information was collected first hand from the site. A lot more effort needs to be put up for collection of data upon which information could be made available to the tourists/pilgrims visiting Devghar. The present study has explored but a tip of the iceberg. The analysis and the result of the study gives web enabled solutions for the tourist related information.
Keywords
Tourist Information, Customization, GeoinformaticsReferences
- Bonham-Carter G. F., 1994, ‘GIS for Geoscientist modeling with GIS”, Pergamon, Canad), pp 84.
- Caldeweyher, D., Zhang J, Pham, B., (2006), “Open CIS-Open source GIS based web community information system”, Int J. of GIS, Vol 20, No 8, pp 885-898.
- Demrs, M. N. (1997), ‘Fundamentals of GIS’, Johan Willy And Son’s, New York pp 198-99.
- Healey, R.G., Delve, J., (2007), “Integrating GIS and Data warehousing in a web environment: A case study of the US 1880 Census” Int J. of GIS, Vol 21, No 6, pp 603-624.
- Hung, B., Wu, Q., Zhan, F.B., (2007), “A shortest path algorithm with novel heuristics for dynamic transportation network”, Int J. of GIS, Vol 21, No 6, pp 101-118.
- Kumar, Alok, (1998), “Development of tourist information system for haridwar.”, M Tech Thesis, Department of Remote Sensing, Birla Institute of Technology, Mesra.
- Lal, Rishikant, (2004),” Development of Tourist information System for Devghar”, M Tech Thesis, Department of Remote Sensing, Birla Institute of Technology, Mesra.
- Lo, C.P., YEUNG, A.K.W., ( 2002). “Concept and Techniques of GIS”, Prentice-Hall of India pvt. Lt. New Delhi. pp 443.
- Matho Anupama, (2002), “Web Enabling of GIS data base”, M Tech Thesis, Department of Remote Sensing, Birla Institute of Technology, Mesra.
- Monad, S., (2002), “Geoinformatics based information system for haridwar”. M Tech Thesis, Department of Remote Sensing, Birla Institute of Technology, Mesra.
- Nijagunappa, R., Shekhar, S., Gurugnanam, B., Raju, P.L.N., and De, P., (2007), “ Road network analysis of Deharadun city using High resolution satellite data and GIS”, J. Ind. Soc. Remote Sensing, Vil 35, No.3 pp 267-274.
- Robinson A. H., Morrison J. L., Muehrcke P.C., Kimerling A. J., Guptill S.C., Sixth Edition “Elements of Cartography”, pp 57.
- Shupeng, C. (1987), “Geographical data handeling and GIS in China”, Int. J. of Geographical Information Systems, Vol 1 No 3, pp 219-228.
- Waugh, T.C., Healy, R.G., (1987),” The GEOVIEW design-A relational data base approach to geographical data handling”, Int J. of GIS, Vol 1, No 2, pp 101-118.
- Dose-Dependent Effects of Corticosterone on Leydig Cell LH Receptors and Steroidogenesis In vitro
Abstract Views :274 |
PDF Views:0
Authors
Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN
Source
Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 54-55Abstract
Glucocorticoid excess due to stress, endocrine disorders or therapeutic application has been recognized to have an adverse efTect on androgenic status of men. Our previous studies emphasized the defective LH signal transduction in Leydig cells exposed to corticosterone. The present study was designed to identify the dose-dependent effects of corticosterone on the regulation of Leydig cell surface LH receptors and steroidogenic potency in vitro.- Dose Dependent Effects of Gamma Radiation on LH and cAMP Stimulated Steroidogenesis in Cultured Human Leydig Cells
Abstract Views :267 |
PDF Views:0
Authors
Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN
Source
Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 55-55Abstract
Therapeutic or experimental radiation exposure is known to impair testicular Leydig cell function. However, the molecular mechanisms that underlie such effects are largely unknown. Our previous study demonstrated that higher doses of gamma radiation impair basal and LH-stimulated cAMP production. The present study deals with the dose dependent effects of gamma radiation on LH and cAMP stimulated steroidogenesis in human Leydig cells. Testicles removed from advanced prostatic carcinoma patients, who do not have any endocrine or metabolic disorders known to affect the testicular functions were used in the present study. Prior to orchidectomy, serum hormones such as FSH, LH, testosterone and estradiol were assayed to evaluate the testicular functions.- Streptozotocin-Diabetes Impairs the Differentiation of Epididymis during Sexual Maturation
Abstract Views :211 |
PDF Views:0
Authors
Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN
Source
Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 72-73Abstract
Male reproductive dysfunction is a common feature in diabetic boys and men. Defective spermatogenesis, sperm count, sperm motility, seminal fluid volume and serum testosterone, supports endocrine basis for impotence and fertility disorders. The present investigation was carried out to understand the impact of diabetes on the structure and development of epididymis during the critical period of sexual maturation in rats. Prepubertal (40 days old) and adult (120 days old) male Wistar rats were made diabetic by single injection of streptozotocin (120 mg/kg body weight for prepubertal and 65 mg/kg body weight for adult) intraperitoneally.- Serum Dihydrotestosterone is a Major Determinant of Bone Mineral Density in Men
Abstract Views :290 |
PDF Views:0
Authors
R. llangovan
1,
M. Balaganesh
1,
S. Sittadjody
1,
R. Sivakumar
1,
M. Sridhar
1,
R. C. Vignesh
1,
B. Ravi Sankar
1,
J. Arunakaran
1,
K. Balasubramanian
1,
M. Michael Aruldhas
1,
N. Srinivasan
1
Affiliations
1 Department of Endocrinology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai - 600 113, IN
1 Department of Endocrinology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai - 600 113, IN
Source
Journal of Endocrinology and Reproduction, Vol 10, No 1 (2006), Pagination: 56-58Abstract
In the present investigation, 100 osteoporotic men with 100 age-matched normal were studied for serum sex steroids, parathyroid hormone (PTH), thyroid hormone (T3), cytokines and bone turnover markers. Serum dihydrotestosterone (DHT) was significantly decreased in osteoporotic men compared with normal. In osteoporotic men, there was a significant increase in serum interleukin (IL)-lalpha. A marked increase in bone formation marker, serum osteocalcin (OCN) and bone resorption marker, serum tartrate-resistant acid phosphatase (TRAP) reflects high bone turnover in osteoporotic men. In conclusion, the present findings point out an important role of DHT in maintaining BMD in men. A strong positive correlation of serum DHT with BMD offers new perspectives in understanding the role of non-aromatizable androgen in the regulation of bone metabolism in men.Keywords
BMD, Cytokines, DHT.- Effects of Streptozotocin-Diabetes and Insulin Replacement on Androgen and Estrogen Receptor Concentrations in the Epididymis of Wistar Rats
Abstract Views :253 |
PDF Views:0
Authors
Affiliations
1 Department of Endocrinology, Dr. ALM Post-Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, IN
1 Department of Endocrinology, Dr. ALM Post-Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, IN
Source
Journal of Endocrinology and Reproduction, Vol 10, No 1 (2006), Pagination: 59-61Abstract
The present study was aimed at evaluating the effects of streptozotocin (STZ)-induced diabetes and insulin replacement on the androgen (AR) and estrogen receptor (ER) concentrations in the caput, corpus and cauda epididymides of prepubertal and adult Wistar rats. Prepubertal (40 days old) and adult (120 days old) male Wistar rats were made diabetic by single intraperitoneal (i.p.) injection of STZ (120 mg/kg and 60 mg/kg body weight, respectively). To one set of diabetic rats, insulin was administered daily at a dose of 3 U/100 g body weight, subcutaneously, in two equally divided doses at 8.00 AM and 6.00 PM. All the rats were killed on the 21st day of commencement of experimentation. The epididymis was dissected out and caput, corpus and cauda segments were separated, freed from spermatozoa and processed for AR and ER quantification. STZ-induced diabetes caused a marked decrease in both nuclear and cytosolic AR and ER concentrations in the caput, corpus and cauda epididymides. Insulin replacement circumvented the adverse effects of diabetes in a segment-specific manner. These findmgs emphasize the detrimental effects of diabetes and the importance of insulin in the maintenance of epididymal AR and ER concentrations in immature as well as adult rats.Keywords
Androgen Receptor, Diabetes, Epididymis, Estrogen Receptor, Insulin.- A Novel Approach to Detect Microcalcification in Mammogram Image using Evolutionary Algorithm
Abstract Views :237 |
PDF Views:12
Authors
Affiliations
1 Department of Research and Development, Bharathiyar University, Coimbatore, Tamilnadu, IN
2 Department of Computer Science, Tamilnadu College of Engineering, Coimbatore, Tamilnadu, IN
1 Department of Research and Development, Bharathiyar University, Coimbatore, Tamilnadu, IN
2 Department of Computer Science, Tamilnadu College of Engineering, Coimbatore, Tamilnadu, IN
Source
Artificial Intelligent Systems and Machine Learning, Vol 4, No 3 (2012), Pagination: 135-140Abstract
Breast cancer is one of the major causes for the increase in mortality among women, especially in developed countries. Brea cancer is the second most common cancer in women. The presence of microcalcifications in breast tissue is one of the most important signs considered by radiologist for an early diagnosis of breast cancer, which is one of the most common forms of cancer among women. In this paper, detection of microcalcification is performed in two steps: preprocessing& enhancement, segmentation. First, the thresholding algorithm is applied for the breast boundary identification and a new proposed modified tracking algorithm is introduced for pectoral muscle determination in Mammograms. Second, the Genetic Algorithm (GA) and Artificial Bee Colony(ABC) is proposed to automatically detect the breast border and nipple position to identify the suspicious regions on digital mammograms based on asymmetries between left and right breast image. The basic idea of the asymmetry approach is corresponding left and right images are subtracted to extract the suspicious region. The algorithms are tested on 161 patient’s digitized mammograms from MIAS database. In general theproposed GA, ABC and Bilateral algorithms are quite competitive with the other algorithms.
Keywords
Genetic Algorithm (GA), Artificial Bee Colony (ABC), Microcalcifications.- Marine Debris - The Global Problem Least Studied in India
Abstract Views :359 |
PDF Views:119
Authors
Affiliations
1 Wildlife Institute of India, Chandrabani, Dehradun 248 001, IN
2 Department of Civil Engineering, SRM University, Kancheepuram 603 203, IN
1 Wildlife Institute of India, Chandrabani, Dehradun 248 001, IN
2 Department of Civil Engineering, SRM University, Kancheepuram 603 203, IN
Source
Current Science, Vol 110, No 7 (2016), Pagination: 1153-1154Abstract
The accumulation of macro- and micro-debris is a growing concern in the oceans and coastlines all over the world. However, the debris characteristics, accumulation and transport pathways along the Indian coastline remain poorly studied. Marine debris is not just an aesthetic problem; it poses a serious threat to marine organisms, ecosystems, human health and navigational safety. Despite the increased international attention, the build-up of these materials along the Indian coastline and coastal waters is poorly understood or reported. Since the debris problem is global, curbing the issue in our coasts is not a single-step process. Nevertheless, assessment and monitoring of this debris along the beaches, coastal waters and on the seabed is crucial for understanding the dynamics of debris movement and subsidence.Full Text
- Derivatized HPTLC Method for Simultaneous Estimation of Glucosamine and Ibuprofen in Tablets
Abstract Views :389 |
PDF Views:183
Authors
Source
Asian Journal of Pharmaceutical Research and Health Care, Vol 2, No 2 (2010), Pagination: 156-162Abstract
A selective, precise and derivatized HPTLC method has been developed for the simultaneous estimation of Glucosamine and Ibuprofen in tablet formulation. In this method standard and sample solutions of Glucosamine and Ibuprofen were applied on pre-coated silica gel 60F254 TLC plate, and developed using Propanol-Ethyl acetate-Ammonia-Water (4: 3: 2: 1 v/v), as mobile phase and derivatized using Iodine vapor. The drugs on the plate were scanned at 254 nm. The dynamic linearity range was 5-25 μg/spot for Glucosamine and 2-10 μg/spot for Ibuprofen. The method was validated for precision, recovery and reproducibility.Keywords
Simultaneous Estimation, HPTLC, Glucosamine and Ibuprofen.Full Text
- Co-Registration of LISS-4 Multispectral Band Data Using Mutual Information-Based Stochastic Gradient Descent Optimization
Abstract Views :316 |
PDF Views:120
Authors
Affiliations
1 Signal and Image Processing Area, Space Applications Centre, ISRO, Ahmedabad 380 015, IN
2 Department of Civil Engineering, SRM University, Kattankulathur 603 203, IN
1 Signal and Image Processing Area, Space Applications Centre, ISRO, Ahmedabad 380 015, IN
2 Department of Civil Engineering, SRM University, Kattankulathur 603 203, IN
Source
Current Science, Vol 113, No 05 (2017), Pagination: 877-888Abstract
We propose a solution for automatic co-registration of LISS-4 MX radiometrically conditioned multi-spectral images issue by considering an optimization problem in which mutual information-based approach is used. Co-registration of multi-spectral images from the same sensor may also be a tough problem to tackle, whenthe payload imaging geometry is complex. The multi-spectral images acquired by ISRO Resources at-1/2 LISS-4 MX class of sensors pose such problems and demand an automatic registration solution for system corrected product generation to cater to user needs. Optical remote sensing image registration is assisted by image geo-referencing or navigation information along with components such as feature detection, matching, correspondence, and resampling the input image to the reference geometry. Intensity-based methods employ an iterative registration framework,where similarity metric based image matching and correspondence is refined to find out optimum transform parameters. We could successfully employ mutual information-based adaptive stochastic gradient descent optimization algorithm to do sub-pixel level satellite image registration tasks by a careful choice of parameters and models related to metric, transform, optimizer, and interpolator in a robust image registration framework which is automatic for different terrain data. The performance is also compared to a recent scale invariant feature transform (SIFT)-based registration method.Keywords
Image Registration, LISS-4, Mutual Information, Optimization.Full Text
References
- ISRO, Resourcesat-2 Data User’s Handbook, NRSA Report No. NRSC: SDAPSA: NDCNDC: DEC11-364, 2011, Hyderabad, India.
- Manthira, M. S., Kayal, R., Ramakrishnan, R. and Srivastava, P. K., RESOURCESAT-1 LISS-4 MX bands on ground co-registration by in-flight calibration and attitude refinement. Int. J. Appl. Earth Obs. Geoinf., 2008, 10, 140–146.
- Radhadevi, P. V., Solanki, S. S., Jyothi, M. V., Nagasubramanian, V. and Geeta, V., Automated co-registration of images from multiple bands of Liss-4 camera. ISPRS J. Photogramm. Remote Sensing, 2009, 64, 17–26.
- Pillala, S. K., Ravikanti, C., Mishra, N., Janja, S. and Geeta, V., A generalized search scheme for automatic registration of remote-sensing data. Int. J. Remote Sensing, 2012, 33, 490–501.
- Brown, L. G., A survey of image registration techniques. ACM Comput. Surv., 1992, 24, 325–376.
- Fonseca, L. M. G. and Manjunath, B. S., Registration techniques for multisensor remotely sensed imagery. Photogramm. Eng. Remote Sensing, 1996, 62, 1049–1056.
- Zitova, B. and Flusser, J., Image registration methods: a survey. Image Vis. Comput., 2003, 21, 977–1000.
- Maintz, J. B. A. and Viergever, M. A., A survey of medical image registration. Med. Image Anal., 1998, 2, 1–36.
- Pluim, J. P. W., Maintz, J. B. A. and Viergever, M. A., Mutual-Information-based registration of medical images: a survey. IEEE Trans. Med. Imaging, 2003, 22, 986–1004.
- Maes, F., Collignon, A., Vandermeulen, D., Marchal, G. and Suetens, P., Multimodality image registration by maximization of mutual information. IEEE Trans. Med. Imaging, 1997, 16, 187–198.
- Viola, P. and Wells III, W. M., Alignment by maximization of mutual information. Int. J. Comput. Vis., 1997, 24, 137–154.
- Thevenaz, P. and Unser, M., A pyramid approach to sub-pixel image fusion based on mutual information. In Proc. IEEE Int. Conf. Image Processing, Lausanne, Switzerland, 1996, vol. 265–268, pp. 16–19.
- Cole-Rhodes, A. A., Johnson, K. L., LeMoigne, J. and Zavorin, I., Multiresolution registration of remote sensing imagery by optimization of mutual information using a stochastic gradient, IEEE Trans. Image Process., 2003, 12, 1495–1511.
- Klein, S., Pluim, J. P. W., Staring, M. and Viergever, M. A., Adaptive stochastic gradient descent optimisation for image registration. Int. J. Comput. Vis., 2009, 81, 227–239.
- Klein, S., Staring, M., Murphy, K., Viergever, M. A. and Pluim, J. P. W., Elastix: a toolbox for intensity-based medical image registration. IEEE Trans. Med. Imag., 2010, 29, 196–205.
- Mattes, D., Haynor, D. R., Vesselle, H., Lewellen, T. K. and Eubank, W., PET–CT image registration in the chest using freeform deformations. IEEE Trans. Med. Imag., 2003, 22, 120–128.
- Unser, M., Splines: a perfect fit for signal and image processing. IEEE Signal Process. Mag., 1999, 16, 22–38.
- Rueckert, D., Sonoda, L. I., Hayes, C., Hill, D. L. G., Leach, M. O. and Hawkes, D. J., Nonrigid registration using free-form deformations: application to breast MR images. IEEE Trans. Med. Imag., 1999, 18, 712–721.
- Goshtasby, A. A., Registration of image with geometric distortion. IEEE Trans. Geosci. Remote Sensing, 1988, 26, 60–64.
- Plakhov, A. and Cruz, P., A stochastic approximation algorithm with step size adaptation. J. Math. Sci., 2004, 120, 964–973.
- Li, Q., Wang, G., Liu, J. and Chen, S., Robust scale-invariant feature matching for remote sensing image registration. IEEE Geosci. Remote Sensing Lett., 2009, 6, 287–291.
- RP-HPLC Method for Simultaneous Estimation of Tramadol HCl and Paracetamol Bulk Drug and its Combined Dosage Form
Abstract Views :186 |
PDF Views:0
Authors
Affiliations
1 Dept. of Pharmaceutical Analysis, RVS College of Pharmaceutical Sciences, Sulur, Coimbatore, Tamilnadu, IN
1 Dept. of Pharmaceutical Analysis, RVS College of Pharmaceutical Sciences, Sulur, Coimbatore, Tamilnadu, IN
Source
Asian Journal of Research in Chemistry, Vol 3, No 3 (2010), Pagination: 552-554Abstract
This work is concerned with application of simple, accurate, precise and highly selective reverse phase high performance liquid chromatographic (RP-HPLC) method for simultaneous estimation of Tramadol HCl and Paracetamol in combined dosage form. Chromatographic separation was achieved isocratically at room temperature on phenomenex C18 column (250×4.6 mm) with a mobile phase composed of 5% Tri-fluoroaceticacid in water:Acetonitrile:Methanol in the ratio of 70:20:10% v/v/v at flow rate of 1.0 ml/min. Detection is carried out using a UV detector at 254 nm. The retention time of Tramadol HCl and Paracetamol was found to be 3.890±0.5 min and 1.990±0.5 min respectively. The method was found to be linear in the range of 0.1-10 μg/ml with mean recovery of 98.96% for Tramadol HCl and 99.11% for Paracetamol. The correlation coefficients for all components are close to 1. The developed method was validated according to ICH guidelines and values of accuracy, precision and other statistical analysis were found to be in good accordance with the prescribed values. Thus the proposed method was successfully applied for simultaneous determination of Tramadol HCl and Paracetamol in routine analysis.Keywords
Tramadol HCl, Paracetamol, RP-HPLC.- Comparison of Stochastic Gradient-Based Optimization Techniques for Nonlinear Satellite Image Coregistration Problem
Abstract Views :409 |
PDF Views:145
Authors
Affiliations
1 Signal and Image Processing Area, Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
2 Department of Civil Engineering, SRM University, Kattankulathur 603 203, IN
1 Signal and Image Processing Area, Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
2 Department of Civil Engineering, SRM University, Kattankulathur 603 203, IN
Source
Current Science, Vol 114, No 10 (2018), Pagination: 2072-2079Abstract
Information-oriented intensity-based cost functions are generally used for optimization frameworks in automatic satellite image registration. Optimization mechanics which updates the transform parameters in the iterative loop requires estimation of derivatives of the cost function to set-up update rules that retrieve the deformation model between the image pairs. Application of stochastic approximation of cost function and its derivatives for solving optimization problems while the objective function is non-differentiable or non-smooth or computed with noise is encountered in real-world problems. The known methods of approximation for solving these problems use the idea of stochastic gradient and certain rules of changing the step length for ensuring convergence. In this article, satellite image coregistration problem is chosen for comparing the performance of two important stochastic optimizers like adaptive stochastic gradient descent and simultaneous perturbation stochastic approximation. Coregistration datasets from Resourcesat-2 LISS-4 MX sensor are chosen for different terrains and features to study subpixel accuracies of order better than 1/20th of a pixel achieved in the comparison of two different optimization techniques employed in intensity-based automatic image registration framework.Keywords
Coregistration Problem, Remote Sensing, Satellite Image, Simultaneous Perturbation, Stochastic Optimization.Full Text
References
- Maes, F., Collignon, A., Vandermeulen, D., Marchal, G. and Suetens, P., Multimodality image registration by maximization of mutual information. IEEE Trans. Med. Imaging, 1997, 16, 187–198.
- Thevenaz, P. and Unser, M., A pyramid approach to sub-pixel image fusion based on mutual information. In Proc. IEEE Int. Conf. Image Processing, Lausanne, Switzerland, 16–19 September 1996, pp. 265–268.
- Klein, S., Staring, M., Murphy, K., Viergever, M. A. and Pluim, J. P. W., Elastix: a toolbox for intensity-based medical image registration. IEEE Trans. Med. Imaging, 2010, 29, 196–205.
- Mattes, D., Haynor, D. R., Vesselle, H., Lewellen, T. K. and Eubank, W., PET-CT image registration in the chest using freeform deformations. IEEE Trans. Med. Imaging, 2003, 22, 120–128.
- Unser, M., Splines: a perfect fit for signal and image processing. IEEE Signal Process. Mag., 1999, 16, 22–38.
- Goshtasby, A. A., Registration of image with geometric distortion. IEEE Trans. Geosci. Remote Sensing, 1988, 26, 60–64.
- Klein, S., Staring, M. and Pluim, J. P. W., Evaluation of optimization methods for nonrigid medical image registration using mutual information and B-splines. IEEE Trans. Image Process., 2007, 16, 2879–2890.
- Manthira Moorthi, S., Gambhir, R. K., Ramakrishnan, R. and Sivakumar, R., Performance study of optimization methods for intensity-based automatic satellite image registration. Int. J. Imaging Robotics, 2012, 8, 101–110.
- Cole-Rhodes, A. A., Johnson, K. L., LeMoigne, J. and Zavorin, I., Multiresolution registration of remote sensing imagery by optimization of mutual information using a stochastic gradient. IEEE Trans. Image Process., 2003, 12, 1495–1511.
- Li, Qi, Sato, I. and Murakami, Y., Simultaneous perturbation stochastic approximation algorithm for automated image registration optimization. In Geoscience Remote Sensing Symposium, IEEE International Symposium on Geoscience and Remote Sensing, Denver, CO, USA, 2006, pp. 184–187.
- Manthira Moorthi, S., Dhar, D. and Sivakumar, R., Coregistration of LISS-4 multispectral band data using mutual information based stochastic gradient descent optimization, Curr. Sci., 2017, 113, 877–888.
- Rueckert, D., Sonoda, L. I., Hayes, C., Hill, D. L. G., Leach, M. O. and Hawkes, D. J., Nonrigid registration using free-form deformations: application to breast MR images. IEEE Trans. Med. Imaging, 1999, 18, 712–721.
- Robbins, H. and Monro, S., A stochastic approximation method. Ann. Math. Stat., 1951, 22, 400–407.
- Plakhov, A. and Cruz, P., A stochastic approximation algorithm with step size adaptation. J. Math. Sci., 2004, 120, 964–973.
- Klein, S., Pluim, J. P. W., Staring, M. and Viergever, M. A., Adaptive stochastic gradient descent optimization for image registration. Int. J. Comput. Vis., 2009, 81, 227–239.
- Spall, J. C., Multivariate stochastic approximation using a simultaneous perturbation gradient approximation. IEEE Trans. Autom. Control, 1992, 37, 332–341.
- Manthira Moorthi, S., Kayal, R., Ramakrishnan, R. and Srivastava, P. K., Resourcesat-1 LISS-4 MX bands on ground co-registration by in-flight calibration and attitude refinement. Int. J. Appl. Earth Obs. Geoinf., 2008, 10, 140–146.
- Theiler, J. P., Galbraith, A. E., Pope, P. A., Ramsey, K. A. and Szymanski, J. J., Automated coregistration of MTI spectral bands. Proc. SPIE, 2002, 4725, 314–327.
- Mark, A. G., Sub-pixel registration assessment of multispectral imagery. Proc. SPIE, Imaging Spectrom. XI, 2006, 6302, 1–12.
- Lymphagioma of the Tongue:A Case Report
Abstract Views :155 |
PDF Views:0
Authors
Affiliations
1 Department of Oral Medicine & Radiology, Institute of Dental Sciences, Siksha O Anusandhan (Deemed to be University) Bhubaneswar, Odisha, IN
2 Department of Prosthodontics, Institute of Dental Sciences, Siksha O Anusandhan (Deemed to be University) Bhubaneswar, Odisha, IN
3 Department of Oral Pathology & Microbiology, Institute of Dental Sciences, Siksha O Anusandhan (Deemed to be University) Bhubaneswar, Odisha, IN
4 Department of Oral Pathology & Microbiology Govt. Dental College, Trivandrum, Kerala, IN
1 Department of Oral Medicine & Radiology, Institute of Dental Sciences, Siksha O Anusandhan (Deemed to be University) Bhubaneswar, Odisha, IN
2 Department of Prosthodontics, Institute of Dental Sciences, Siksha O Anusandhan (Deemed to be University) Bhubaneswar, Odisha, IN
3 Department of Oral Pathology & Microbiology, Institute of Dental Sciences, Siksha O Anusandhan (Deemed to be University) Bhubaneswar, Odisha, IN
4 Department of Oral Pathology & Microbiology Govt. Dental College, Trivandrum, Kerala, IN