Search results for: M. Jayalakshmi

Items from 1 to 20 out of 35 results

article

Effect of substrate temperature on the characteristics of ZnO films produced by a combination of thermal vapor deposition and oxidation processes

C. Sneha, C. Prabukumar, M. Jayalakshmi, Suma Bhat, more

Journal of Materials Science: Materials in Electronics > 2017 > 28 > 21 > 15959- 15966

In the present work, ZnO semiconductor films were prepared by following two step processes, namely, thermal vapor deposition of the zinc on the glass substrate followed by oxidative annealing. Substrate temperature during deposition of the zinc was varied. Structural properties and morphology of the ZnO films were investigated by using X-ray diffraction and scanning electron microscopy techniques...

article

Structural and morphological changes with substrate heating in zinc films synthesized by thermal vapor deposition technique

C. Sneha, C. Prabukumar, M. Jayalakshmi, K. Udaya Bhat

Journal of Materials Science: Materials in Electronics > 2017 > 28 > 11 > 8038-8042

Zinc oxide (ZnO) films are used in numerous applications such as solar cells, gas sensors, nanogenerators, etc., owing to their large band gap, piezoelectric activity and versatile nanostructures. Deposition of zinc films and their subsequent oxidation is considered as one of the successful methods to obtain nanostructured ZnO films. It has been reported that the structural features of the oxide film...

article

Microstructural characterization of low temperature plasma-nitrided 316L stainless steel surface with prior severe shot peening

M. Jayalakshmi, Prashant Huilgol, B. Ramachandra Bhat, K. Udaya Bhat

Materials & Design > 2016 > 108 > C > 448-454

Surface nanocrystallization by severe deformation has proven beneficial as pre-treatment to plasma nitriding. It aids in achieving thicker nitride layers at lower temperatures thus making the process more economical. In austenitic stainless steels, severe deformation leads to formation of strain induced martensite on the surface while plasma nitriding alone forms expanded austenite. However, structural...

article

Oligoamnios and Perinatal Outcome

Sandhyasri Panda, M. Jayalakshmi, G. Shashi Kumari, G. Mahalakshmi, more

The Journal of Obstetrics and Gynecology of India > 2017 > 67 > 2 > 104-108

Objective(s) We aimed at evaluating the predictive value of amniotic fluid index ≤5 on perinatal outcome in terms of effect on cardiotocography, mode of delivery, meconium in liquor, birth weight, fetal distress, APGAR score at birth and neonatal admission to ICU. Method(s) This is a prospective study of 308 antenatal women admitted to labor ward of MIMS during February 2014–December 2015 with...

chapter

Significant Pixel Watermarking Using Human Visual System Model in Wavelet Domain

M. Jayalakshmi, S. N. Merchant, U. B. Desai

Lecture Notes in Computer Science > Computer Vision, Graphics and Image Processing > Image Filtering/Processing > 206-215

In this paper, we propose a novel algorithm for robust image watermarking by inserting a single copy of the watermark. Usually, robustness is achieved by embedding multiple copies of the watermark.The proposed method locates and watermarks ‘significant pixels’ of the image in the wavelet domain. Here, the amount of distortion at every pixel is kept within the threshold of perception by adopting ideas...

chapter

Projection Onto Convex Sets with Watermarking for Error Concealment

Chinmay Kumar Nayak, M. Jayalakshmi, S. N. Merchant, U. B. Desai

Lecture Notes in Computer Science > Pattern Recognition and Machine Intelligence > Image Analysis > 119-127

Transmission of images and video over unreliable channels produces visual artifacts due to either loss or corruption of bit streams. Error concealment schemes aim at reducing such degradation and improving the visual quality. Error concealment schemes usually conceal errors of a specific type. This points towards the possibility of combining more than one scheme, for efficient error concealment and...

chapter

Secure communication between wireless medical sensor networks and data servers using paillier and elgamal key cryptosystem

A. Vasukidevi, M. Jayalakshmi, V. Gomathi

2016 International Conference on Computing Technologies and Intelligent Data Engineering (ICCTIDE'16) > 1 - 6

2016 International Conference on Computing Technologies and Intelligent Data Engineering (ICCTIDE)

A wireless sensor network is used to sense the infected person's body condition and transmits the collected data to the database. The details including temperature, heartbeat, and blood pressure are sensed using appropriate sensors and stored in the servers. The details are encrypted using Paillier and ElGamal key cryptosystems for providing high security. The server is helpful in providing querying...

chapter

An enhanced underground pipeline water leakage monitoring and detection system using Wireless sensor network

M. JayaLakshmi, V. Gomathi

2015 International Conference on Soft-Computing and Networks Security (ICSNS) > 1 - 6

2015 International Conference on Soft-Computing and Networks Security (ICSNS)

This paper describes about the design and implementation of a water leakage monitoring and detection system to monitor and detect leak with the help of wireless networked sensors. The objective of this enhanced system is to detect possible underground water leakage for residential water pipes that are monitored from a PC. Therefore, a robust and reliable Wireless sensor network which composes small...

article

Choosing the Route of Hysterectomy

Sandhyasri Panda, Ashok Kumar Behera, M. Jayalakshmi, T. Narasinga Rao, more

The Journal of Obstetrics and Gynecology of India > 2015 > 65 > 4 > 251-254

Purpose To compare the clinical results of three techniques of hysterectomy- abdominal hysterectomy (AH), non-descent vaginal hysterectomy (NDVH), and laparoscopic-assisted vaginal hysterectomy (LAVH). Methods A simple prospective randomized study was performed in a tertiary care centre between June 2011 and Dec 2012, among 150 consecutive women indicated to undergo hysterectomy for benign...

article

Low temperature synthesis of iron pyrite nanorods for photovoltaic applications

P. Namanu, M. Jayalakshmi, K. Udaya Bhat

Journal of Materials Science: Materials in Electronics > 2015 > 26 > 11 > 8534-8539

Iron pyrite is gaining reputation amongst the various alternatives for silicon as the photovoltaic material in solar cells due to its low cost, strong absorption and relatively high abundance of its constitutional elements. The synthesis of iron pyrite nanoparticles by existing hydrothermal methods with precise control over size, shape and stoichiometry is a difficult task due to the difficulty in...

article

New insights into the relationship between dynamic softening phenomena and efficiency of hot working domains of a nitrogen enhanced 316L(N) stainless steel

Dipti Samantaray, Sumantra Mandal, M. Jayalakshmi, C.N. Athreya, more

Materials Science and Engineering: A > 2014 > 598 > C > 368-375

In the present study, the dynamic recrystallization (DRX) behavior of a nitrogen enhanced 316L(N) stainless steel (with 0.14wt% N) has been studied in the temperature range of 1073–1423K and strain rate range of 0.001–10s⁻¹ to understand the correlations between dynamic softening phenomena and efficiencies of hot working domains in the processing map. DRX fractions and the grain sizes in each condition...

chapter

Supervision of network through software defined networking

K. Venkatraman, V. Parthasarathy, S. Senthil Kumaar, M. Jayalakshmi

International Conference on Information Communication and Embedded Systems (ICICES2014) > 1 - 7

2014 International Conference on Information Communication and Embedded Systems (ICICES)

This paper presents in the area of software defined networking. Our aim is to identify limitations of current networking technologies and how software-defined networks (SDN) could reduce cost, and improve the performance of campus Networks for their network management. We pursue to identify solutions in this paper to enable possible customers to assess that SDN may be preferable over Current network...

article

Effect of Strain Rate on the Dynamic Recrystallization Behavior in a Nitrogen-Enhanced 316L(N)

Sumantra Mandal, M. Jayalakshmi, A. K. Bhaduri, V. Subramanya Sarma

Metallurgical and Materials Transactions A > 2014 > 45 > 12 > 5645-5656

In this paper, the effect of strain rate (in the domain of 0.001 to 10 s⁻¹) on dynamic recrystallization (DRX) kinetics in a nitrogen-enhanced 316L(N) austenitic stainless steel during high temperature [≥1123 K (≥850 °C)] deformation is reported. In the low strain rate domain (i.e., <0.1 s⁻¹), the DRX is predominantly governed by higher growth of DRX grains resulting in a higher DRX fraction and...

chapter

Hierarchical fusion using vector quantization for visualization of hyperspectral images

Parul Shah, M. Jayalakshmi, Shabbir N. Merchant, Uday B. Desai

14th International Conference on Information Fusion > 1 - 8

2011 International Conference on Information Fusion (FUSION)

Visualization of hyperspectral images that combines the data from multiple sensors is a major challenge due to huge data set. An efficient image fusion could be a primary key step for this task. To make the approach computationally efficient and to accommodate a large number of image bands, we propose a hierarchical fusion based on vector quantization and bilateral filtering. The consecutive image...

article

Effect of Zincation/Sonication on Electroplated Gold Deposited on Aluminum Substrate

M. Palaniappa, M. Jayalakshmi, K. Balasubramanian

Journal of Materials Engineering and Performance > 2011 > 20 > 6 > 1028-1035

The adhesion strength of gold plated layers on Al substrates has been investigated. Conventional zincation and modified zincation under ultrasonication of aluminum samples are done. Zincation is done by two ways: single zincation and double zincation. Both are repeated under ultrasonic agitation. Ultrasonic agitation during zincating produced dense population of small Zn particles and increased the...

article

Optimum retrieval of watermark from wavelet significant coefficients

M. Jayalakshmi, S.N. Merchant, U.B. Desai

IET Information Security > 2008 > 2 > 4 > 119 - 128

Watermark retrieval in wavelet domain has been proved to be more robust from significant coefficients than high absolute coefficients when a single copy of the watermark is embedded in the original data. The highest absolute coefficients refer to the coefficients with the highest absolute values in any selected band and significant coefficients refer to the coefficients with the highest significance...

article

Hydrothermal synthesis of SnO2–V2O5 mixed oxide and electrochemical screening of carbon nano-tubes (CNT), V2O5, V2O5–CNT, and SnO2–V2O5–CNT electrodes for supercapacitor applications

M. Jayalakshmi, M. Mohan Rao, N. Venugopal, Kwang-Bum Kim

Journal of Power Sources > 2007 > 166 > 2 > 578-583

Nano-scaled SnO ₂ –V ₂ O ₅ mixed oxide is synthesized by a hydrothermal method in an autoclave. For comparative evaluation, V ₂ O ₅ single oxide is prepared by a conventional process from ammonium vanadate. The capacitive behaviour of the following electrodes is studied by cyclic voltammetry in 0.1M KCl solutions: carbon nano-tubes (CNT), V ₂ O ₅...

article

Solvent and thiourea adsorption/intercalation effects on the solid-state electrochemistry of α-phase nickel hydroxide nanoparticles

M. Jayalakshmi, P. Radhika, K. Phani Raja, M. Mohan Rao

Journal of Solid State Electrochemistry > 2007 > 11 > 2 > 165-172

Nanoparticles of α-phase nickel hydroxide were synthesized by a single-step hydrothermal method using urea as the hydrolytic agent. Precipitated powders were of pure turbostratic α-phase as confirmed by x-ray diffraction profile. The ageing of α-Ni(OH)₂ in 1.0 M alkali solutions is investigated for pure non-intercalated α-Ni(OH)₂ and thiourea intercalated/absorbed α-phase nanomaterials. The α-Ni(OH)...

article

Electroless Ni–P coated on graphite as catalyst for the electro-oxidation of dextrose in alkali solution

G. Veera Babu, M. Palaniappa, M. Jayalakshmi, K. Balasubramanian

Journal of Solid State Electrochemistry > 2007 > 11 > 12 > 1705-1712

Graphite particles were coated with Ni–P by electroless deposition using a conventional bath consisting of a nickel salt and hypophosphite. After 15 min of electroless deposition, the graphite particles were covered with 10 wt% nickel and 0.7–1.0 wt% phosphorus as analysed by wet chemical method. Surface morphology was studied by scanning electron microscopy (SEM). Electrochemical characterisation...

chapter

Error Concealment Using Digital Watermarking

M. Jayalakshmi, S.N. Merchant, U.B. Desai, G. Ajay, more

APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems > 1713 - 1716

APCCAS 2006. 2006 IEEE Asia Pacific Conference on Circuits and Systems

Images transmitted over unreliable channels are highly prone to errors. This produces severe distortion in the images and are usually repaired using post processing techniques called error concealment techniques. In this paper, the authors propose a new method of error concealment using the principle of digital watermarking. The watermark used in this case is not a separate digital data, but some...

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Journal of Materials Science: Materials in Electronics (3)
The Journal of Obstetrics and Gynecology of India (2)
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INFONA - science communication portal

Search results for: M. Jayalakshmi

Effect of substrate temperature on the characteristics of ZnO films produced by a combination of thermal vapor deposition and oxidation processes

Structural and morphological changes with substrate heating in zinc films synthesized by thermal vapor deposition technique

Microstructural characterization of low temperature plasma-nitrided 316L stainless steel surface with prior severe shot peening

Oligoamnios and Perinatal Outcome

Significant Pixel Watermarking Using Human Visual System Model in Wavelet Domain

Projection Onto Convex Sets with Watermarking for Error Concealment

Secure communication between wireless medical sensor networks and data servers using paillier and elgamal key cryptosystem

An enhanced underground pipeline water leakage monitoring and detection system using Wireless sensor network

Choosing the Route of Hysterectomy

Low temperature synthesis of iron pyrite nanorods for photovoltaic applications

New insights into the relationship between dynamic softening phenomena and efficiency of hot working domains of a nitrogen enhanced 316L(N) stainless steel

Supervision of network through software defined networking

Effect of Strain Rate on the Dynamic Recrystallization Behavior in a Nitrogen-Enhanced 316L(N)

Hierarchical fusion using vector quantization for visualization of hyperspectral images

Effect of Zincation/Sonication on Electroplated Gold Deposited on Aluminum Substrate

Optimum retrieval of watermark from wavelet significant coefficients

Hydrothermal synthesis of SnO2–V2O5 mixed oxide and electrochemical screening of carbon nano-tubes (CNT), V2O5, V2O5–CNT, and SnO2–V2O5–CNT electrodes for supercapacitor applications

Solvent and thiourea adsorption/intercalation effects on the solid-state electrochemistry of α-phase nickel hydroxide nanoparticles

Electroless Ni–P coated on graphite as catalyst for the electro-oxidation of dextrose in alkali solution

Error Concealment Using Digital Watermarking

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