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Search Results: 1 - 10 of 145586 matches for " B Shankar Anandh "
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Modified Newton's rings: II
T. Sai Chaitanya,Rajiv kumar,V. Sai Krishna,B Shankar Anandh,K. S. Umesh
Physics , 2010,
Abstract: In an earlier work (Shankar kumar Jha, A Vyas, O S K S Sastri, Rajkumar Jain & K S Umesh, 'Determination of wavelength of laser light using Modified Newton's rings setup', Physics Education, vol. 22, no.3, 195-202(2005)) reported by our group, a version of Newton's rings experiment called Modified Newton's rings was proposed. The present work is an extension of this work. Here, a general formula for wavelength has been derived, applicable for a plane of observation at any distance. A relation between the focal length and the radius curvature is also derived for a plano-convex lens which is essentially used as a concave mirror. Tracker, a video analysis software, freely downloadable from the net, is employed to analyze the fringes captured using a CCD camera. Two beams which give rise to interference fringes in conventional Newton's rings and in the present setup are clearly distinguished.
[1-(4-Nitrobenzyl)-2-butyl-4-chloro-1H-imidazol-5-yl]-4, 5-dihydro-1-phenyl-1H-pyrazole: Synthesis, Anti-Inflammatory and Analgesic Activities  [PDF]
S. Sreenivasa, B. J. Shankar
Open Journal of Medicinal Chemistry (OJMC) , 2013, DOI: 10.4236/ojmc.2013.32007
Abstract:

In the present investigation, series of Bis (heterocycle)s bearing pyrazoline in combination of the imidazole derivatives have been synthesized via 1,3-dipolar cycloaddition reactions of N-(nitrobenzyl)-imidazole nitrile imines with different dipolarophiles. All the newly synthesized compounds were characterized and screened for analgesic-anti-inflammatory activities and were compared with the standard drugs. The compounds exhibited excellent anti-inflammatory and analgesic activities. Out of the compounds studied 4b, 4d and 4g compounds shown statistically significant activity comparable to the standard drugs Ibuprofen and Aspirin at the same dose.

Magneto Hydrodynamics Stagnation Point Flow of a Nano Fluid over an Exponentially Stretching Sheet with an Effect of Chemical Reaction, Heat Source and Suction/Injunction  [PDF]
Ch. Achi Reddy, B. Shankar
World Journal of Mechanics (WJM) , 2015, DOI: 10.4236/wjm.2015.511020
Abstract: A numerical investigation is carried out on the effects of heat source suction and viscous dissipation on Magneto hydrodynamics boundary layer flow of a viscous, steady and incompressible fluid. The flow is assumed to be over on exponentially stretching sheet. The governing system of partial differential equations has been transformed into ordinary differential equation using similarity transformation. Keller box method is simulated on the dimensionless system of differential equations. The skin friction coefficient and the heat and mass transfer rates are very significant parameters that are computed, analysed discussed in detail.
Brain abscess due to cladophialophora bantiana
Jayakeerthi S,Dias M,Nagarathna S,Anandh B
Indian Journal of Medical Microbiology , 2004,
Abstract: Cladophialophora bantiana (Xylohypha bantiana) is a dematiaceous fungus with distinct neurotropism. CNS phaeohyphomycosis due to C. bantiana is an uncommon infectious condition and is associated with high mortality. We report this rare clinical entity in a 22-year-old male, presenting as brain abscess. Etiological diagnosis was made based on fungal culture and histopathological examination. Complete surgical resection of the lesion and treatment with antifungal agents could not save the patient from this frequently fatal infection.
Factors predicting progression of low-grade diffusely infiltrating astrocytoma
Ranjan Manish,Santosh Vani,Tandon Ashwini,Anandh B
Neurology India , 2011,
Abstract: Background: Low-grade diffuse astrocytoma (DA) is considered benign tumor (World Health Organization [WHO] grade II), but it has an inherent tendency for malignant progression, which is quite variable. Aim: To identify malignant progression in an individual case of DA, we studied the clinico-radiological and immunohistochemical factors and correlated with progression of DA at a dedicated tertiary level neurosciences centre NIMHANS, Bangalore, India. Patients and Methods: Consecutive adult patients who had undergone tumor decompression for lobar supratentorial DA at our institute from 1994 to 1998 were retrospectively selected and followed up for clinico-radiological progression. The clinico-radiological and histomorphological features were studied. With the use of immunohistochemistry, proliferation index [MIB-1 labeling index (LI)], p53 protein expression, microvessel density (MVD) count [assessed using anti-CD34 antibody] were analyzed and correlated with progression-free survival (PFS) Results: There were 13 patients. Mean age was 34 years. The most common presenting symptom was seizures. The median follow-up was 54 months. There were four recurrences, with median interval of 75 months. Eight patients received radiotherapy. Younger patients (<40 years), seizure as the presenting symptom and postoperative radiotherapy were associated with longer PFS, while gemistocytic morphology (>20% gemistocytic cells), MVD value >20 correlated with shorter PFS, albeit statistically insignificant. MIB1 LI did not correlate with recurrence pattern. Moreover, p53 LI > 10% correlated with early progression (P = 0.04). Conclusion: Our study highlights some of the clinical, histological and immunohistochemical parameters that predict progression on DA. Validation on a larger sample may be useful to plan appropriate treatment in an individual case.
A 30-year-old male with diffuse white matter lesions
Yasha T,Anandh B,Srikanth S,Mahadevan Anita
Neurology India , 2005,
Abstract:
An Improved Energy Balanced Dissimilar Clustered Routing Architecture for Wireless Sensor Networks  [PDF]
S. Jeba Anandh, E. Baburaj
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.710280
Abstract: In wireless sensor networks, clustering of nodes effectively conserves considerable amount of energy resulting in increased network life-time. Clustering protocols do not consider density of nodes in cluster formation, which increases the possibility of hotspots in areas where the density of nodes is very less. If the node density is very high, cluster-heads may expend high energy leading to their early death. Existing cluster protocols that concentrate on energy conservation have not exhibited their impact on packet delivery and delay. In this proposed protocol, clusters are constructed based on the range of nodes, distance between neighbouring nodes and density of nodes over a region resulting in the formation of dissimilar clusters. With this method, the entire sensing region is considered to be a large circular region with base station positioned at the centre. Initially, the nodes that can be able to reach base station in a single hop are considered for constructing inner smaller circular regions over the entire region. This method is iterated for n-hop nodes until n-concentric circular regions are formed. These circular boundaries are reconstructed based on a distance metric, density of nodes and a divergence factor. Using this architecture, network analysis is done by routing data to the base station from different sized clusters. Based on simulation results, this new protocol Dynamic Unequal Clustered Routing (D-UCR), despite being energy efficient, showed better data delivery ratio and minimized delay when
Concurrent Nimotuzumab with Radiation Therapy in Locally Advanced Cancers of Oropharynx and Hypopharynx: A Review of 6 Cases  [PDF]
B. Ravi Shankar, Poojar Kiran, B. V. Madhavi, E. Vijay
Journal of Cancer Therapy (JCT) , 2015, DOI: 10.4236/jct.2015.64042
Abstract:

Background: The prevalence of head and neck cancers in the world is around 57% and predominantly occurs in Asian countries. It accounts for 30% of all cancers in India. The cure rate of locally advanced squamous cell carcinoma of the head and neck (SCCHN) has only 30% - 60% even after combined therapeutic approaches. Epidermal Growth Factor Receptor (EGFR) antagonists are the most researched targets in the management of head and neck cancers. Claims at superior tumor control and additional survival benefit without any added toxicity make it an attractive option. With this case series we intend to see how nimotuzumab, a humanized monoclonal antibody, fares in difficult cases of head and neck cancers. Case Description: In this case series, total six patients of locally advanced cancer of head and neck region were treated weekly using cisplatin and nimotuzumab concurrently with radiation therapy (RT) for 6 - 7 weeks. Depending upon the disease stage as well as the general condition of the patient, different dose cycles and radiation doses were tailored. Patients were monitored for regular physical examinations and hematological tests followed by pre and post treatment computed tomography (CT) scans, Fludeoxyglucose positive emission tomography (FDG PET-CT) scans, and histopathology. All patients were assessed for toxicities and managed consequently. After completion of radiation and follow-up, 6 weeks later post treatment CT scans were carried out. Conclusion: This case series shows that combination of chemoradiation with nimotuzumab achieved good response rates with no evidence of residual disease/disease progression on follow-up. The patients’ tolerability with combination therapy was good and toxicity was acceptable. Nimotuzumab was found beneficial in combination with chemoradiation for locally advanced head and neck cancers.

Adenovirus Infection in Guinea Pig - A Case Study
Shankar B.P.
Veterinary World , 2008,
Abstract: [Veterinary World 2008; 1(9.000): 280-280]
Common Respiratory Diseases of Poultry
Shankar B.P.
Veterinary World , 2008,
Abstract: [Veterinary World 2008; 1(7.000): 217-219]
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