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Search Results: 1 - 10 of 224540 matches for " R. Krishnan "
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Preliminary Study on the Antibacterial Activity of Six Medicinal Plants against Two Naso-Pharyngeal Pathogens—Streptococccus pyogenes and Pseudomonas aeruginosa  [PDF]
R. Jithesh Krishnan, S. Resmy Nair
American Journal of Plant Sciences (AJPS) , 2016, DOI: 10.4236/ajps.2016.76086
Abstract: Objective: The objective is to study the antibacterial activity of six medicinal plants against two naso-pharyngeal pathogens and determination of total phenol contents in ethanol extracts of those plants. Methods: Different serial concentrations (0.05 g/mL, 0.1 g/mL, 0.2 g/mL, 0.4 g/mL) of ethanolic and acetone extracts of Piper nigrum L. (Piperaceae), Ocimum sanctum Linn., Plectranthus amboinicus L. (Lamiaceae), Ayapana triplinervis M.Vahl. (Asteraceae), Cinnamomum zeylanicum L. (Lauraceae), Allium schoenoprasum Linn. (Liliaceace) were evaluated for the antibacterial activity using disc diffusion method against gram positive Streptococcus pyogenes and gram negative Pseudomonas aeruginosa. The extracts were prepared from different parts of the plants. The total phenol content was estimated using folin-ciocaltau reagent in catechol equivalents. Results: Majority of the extracts had inhibitory effect against the tested bacteria at different concentrations. In ethanol extracts, Plectranthus amboinicus exhibited the maximum zone of inhibition (14 mm) at 0.05 g/mL concentration against Streptococcus pyogenes, and Ocimum sanctum showed highest zone of bacterial inhibition (19 mm) at 0.05 g concentration against Pseudomonas aeruginosa. In acetone extracts, Piper nigrum had the maximum zone of bacterial inhibition (17 mm) in 0.4 g/mL concentration against Streptococcus pyogenes and Cinnamomum zeylanicum and Allium schoenoprasum exhibited the highest zone of bacterial inhibition (0.4 g/mL) against Pseudomonas aeruginosa. The ethanol extract of Plectranthus amboinicus contained the highest amount of phenol (0.8 mg/mL) and Allium schoenoprasum contained the lowest amount (0.62 mg/mL). In acetone, Cinnamomum zeylanicum contained highest phenol content (0.78 mg/mL). Conclusion: All these investigations pave way to the molecular modeling of the lead phyto compounds present in the studied plants, and also in finding out their biochemical action in various metabolic pathways and reactions of infection.
Management of postoperative choroidal detachment
Krishnan M,Baskaran R
Indian Journal of Ophthalmology , 1985,
Abstract:
Multiple Cross-Layer Design Based Complete Architecture for Mobile Adhoc Networks
R. Venkatachalam,A. Krishnan
Computer Science , 2009,
Abstract: Different cross layer design for mobile adhoc network focuses on different optimization purpose, different Quality of Service (QoS) metric and the functions like delay, priority handling, security, etc. Existing cross layer designs provide individual solution for congestion control, fault tolerance, power conservation, energy minimization and flow control and the major drawback is of high cost and overhead. In this paper, we propose to design multiple cross layer design based architecture to provide a combined solution for link failure management, power conservation, congestion control and admission control. By simulation results, we show that the average end to end delay, average energy consumption and the packet loss are considerably reduced with the increase in high throughput and good delivery ratio.
A new concept of reduction of Gaussian noise in images based on fuzzy logic
M. Hari Krishnan,R. Viswanathan
Applied Mathematical Sciences , 2013,
Abstract: Image filtering is a technique to preserve important signal elements such as edges,smoothing the details of the image to make images appear clear and sharpener. Amongall the non linear concepts to suppress Gaussian noise,the fuzzy logic based approachesare important as they are cabable of reasoning with vague and uncertain informations. Inthis study, we present a new method for the noise reduction of images contaminated withGaussian noise by using fuzzy image filter with the help of fuzzy rules which make useof membership functions. In this article, fuzzy derivative concept is also applied toperform fuzzy smoothing. This method provides better input for further image processingtechniques and also it increases the contrast of the images, fine details and sharpening theedges as well. In this study, comparison is also made with the existing noise reductionmethods by numerical measures and visual inspection.
GROWING SELF ORGANIZED MAPS FOR RADIOGRAPHIC NON DESTRUCTIVE TESTING OF METALLIC PRODUCTS
Sarin CR,Manu R Krishnan
International Journal of Soft Computing & Engineering , 2012,
Abstract: Manual inspection of metallic products can only be atime-consuming and is less reliable to find microscopic andinternal defects, therefore is an expensive task; it can also sufferfrom operator performance. The proposed system apply imageprocessing techniques to automatically inspect radiographicimages and evaluate the data to find faults and is based onImproved Growing Self organized Maps Segmentation. Thenumber of false detections is still high and will be addressed infuture research. Monitoring the defect or damage at an early stageis a very important as it allows to implement operations to classifyand correct defects and improves the safety, reliability, accuracy,and high throughput of the structure. This paper presents animproved intelligent methodology for Radiographic automatedvisual quality inspection and, which provides many advantagesover traditional methods. The accuracy of conventional systems isvery much depending on the selected features, which are extractedfrom defect images. Growing Self Organized Maps forRadiographic Non Destructive Testing is an advanced methodsuitable for crack detection, which gives a smoothed image toobtain uniform brightness, followed by removing isolated points toremove noise and morphological operations with fast operation.
Osteosarcoma of the Mandible Masquerading as a Dental Abscess: A Report of a Case
Sukumaran Anil,Anitha P. Krishnan,R. Rajendran
Case Reports in Dentistry , 2012, DOI: 10.1155/2012/635062
Abstract: An aggressive and fatal case of osteosarcoma of the mandible in a 19-year-old female is reported. Six weeks after the clinical appearance of the swelling, the patient died. This paper is unique in that the age of occurrence and the biologic behavior of the tumor were not consistent with the reported literature. The case report is followed by a brief review of osteosarcoma of the jaw with a note on its clinical presentation, diverse radiologic appearance, varied histopathologic picture, and prognosis.
On mg - Continuous Function in Minimal Structure
R. Parimelazhagan,N. Nagaveni,Sai sundara Krishnan
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
Client-to-Client Streaming Scheme for VOD Applications
M Dakshayini,T R Gopala Krishnan Nair
International Journal of Multimedia & Its Applications , 2010,
Abstract: In this paper, we propose an efficient client-to-client streaming approach to cooperatively stream thevideo using chaining technique with unicast communication among the clients. This approach considerstwo major issues of VoD 1) Prefix caching scheme to accommodate more number of videos closer toclient, so that the request-service delay for the user can be minimized. 2) Cooperative proxy and clientchaining scheme for streaming the videos using unicasting. This approach minimizes the client rejectionrate and bandwidth requirement on server to proxy and proxy to client path. Our simulation results showthat the proposed approach achieves reduced client waiting time and optimal prefix caching of videosminimizing server to proxy path bandwidth usage by utilizing the client to client bandwidth, which isoccasionally used when compared to busy server to proxy path bandwidth.
Overactive Bladder Disease : Overview of the recent advances in Symptoms, Diagnosis and Treatment
Anandi Krishnan,Prof. Dr. R. S. Gaud
Pharmaceutical Reviews , 2008,
Abstract: The ability to hold urine and maintain continence is dependent on normal function of the lower urinary tract, the kidneys, and the nervous system, plus the physical and psychological ability to recognize and appropriately respond to the urge to urinate.The bladder's ability to fill and store urine requires a functional sphincter (muscle controlling output) and a stable bladder wall muscle (detrusor). The bladder of an infant contracts automatically when a certain volume of urine is reached. As the individual learns to control urination, bladder muscle contraction is prevented by constant inhibition from the cerebral cortex (part of the brain). This allows urination to be delayed until the individual is ready. Undesired bladder muscle contraction may occur as the result of a break in the neurological pathway from the brain to the bladder. It can also occur if the bladder is irritated and the normal neurological impulses to inhibit urination are insufficient to keep the bladder relaxed as it fills. This is called Overactive bladder syndrome or urinary incontinence. This article reviews the recent advances, diagnosis and treatment of this disease state.
Unusual cases of molluscum contagiosum of eye
Rao V,Baskaran R,Krishnan M
Indian Journal of Ophthalmology , 1985,
Abstract:
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