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Search Results: 1 - 10 of 21842 matches for " Kiran Kumar "
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Extensive Cannon Ball Metastases—A Case Study of a 49-Year-Old Bulgarian Male  [PDF]
Kiran Kumar
Open Journal of Medical Imaging (OJMI) , 2014, DOI: 10.4236/ojmi.2014.43022
Abstract: Multiple pulmonary nodules on chest x-ray, known commonly as cannon ball secondaries, are the classical presentation of haematogenous dissemination of a malignant tumor to the lungs. This almost always indicates advanced stage of the disease with a very grim outlook in terms of cure or survival. In this report we present a patient with very extensive Cannon Ball Metastases due to advanced colonic malignancy.
Kimura’s Disease—A Rare Cause of Head and Neck Swelling  [PDF]
Kiran Rao, Sudesh Kumar
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2014, DOI: 10.4236/ijohns.2014.34037

Kimura’s disease (KD) is a chronic inflammatory disorder with unknown etiology, most commonly manifesting as painless unilateral cervical lymphadenopathy or subcutaneous masses in the head or neck region. The disease is characterized by a triad of painless subcutaneous masses in the head or neck region, blood and tissue eosinophilia, and markedly elevated serum immunoglobulin E levels. Kimura’s disease is an unusual vascular tumor that typically occurs at 20 to 30 years of age. There has been no documented case of malignant transformation; however, recurrence rates after excision may be as high as 25%. Surgery and medical therapy are useful for treatment. We present a 14 years old male developed a unilateral cervical mass associated with KD. It was a recurrence of disease. As a complete excisional resection of the mass already done 1 year back at some other centre, we decided to give medical treatment for Kimura’s disease.

Structure and Dielectric Relaxation Behaviour of [Pb0.94Sr0.06][(Mn1/3Sb2/3)0.05 (Zr0.49Ti0.51)0.95]O3 Ceramics  [PDF]
Kumar Brajesh, Kiran Kumari
World Journal of Condensed Matter Physics (WJCMP) , 2015, DOI: 10.4236/wjcmp.2015.53022
Abstract: The field dependences of the dielectric response and conductivity are measured in a frequency range from 100 Hz to 1 MHz and in a temperature range from 300 K to about 775 K. The dielectric measurements (real and imaginary parts) of this composition with temperature (300 K - 775 K) at different frequencies (100 Hz - 1 MHz) unambiguously point towards relaxor behaviour of the material. The real part of the dielectric constant is found to decrease with increasing frequency at different temperatures while the position of dielectric loss peak shifts to higher frequencies with increasing temperature indicating a strong dispersion beyond the transition temperature, a feature known for relaxational systems such as dipole glasses. The frequency dependence of the loss peak obeys an Arrhenius law with activation energy of 0.15 eV. The distribution of relaxation times is confirmed by Cole-Cole plots as well as the scaling behavior of the imaginary part of the electric modulus. The frequency-dependent electrical data are also analyzed in the framework of the conductivity and modulus formalisms. Both these formalisms yield qualitative similarities in the relaxation times. The Rietveld analysis conforms that the materials exhibits tetragonal structure. The SEM photographs of the sintered specimens present the homogenous structures and well-grown grains with a sharp grain boundary.
Experimental Study & Heat Transfer Analysis on Copper Spiral Heat Exchanger Using Water Based SiO2 Nanofluid as Coolant  [PDF]
Suman Shah, K. Kiran Kumar
World Journal of Nano Science and Engineering (WJNSE) , 2018, DOI: 10.4236/wjnse.2018.84004
Abstract: Heat exchangers have its major application in automobile, air condition, refrigerator, power plants, and many others. Heat transfer characteristics and performance of Copper spiral heat exchanger are investigated and compared with pure water. Nanofluid can enhance thermos-physical properties. Experiment is carried out for water based SiO2 Nanofluid with 15 nm average sized nanoparticle at varying air velocity and mass flow rate of fluid to investigate its effect on heat transfer coefficient. From the experimental data, a closed form solution for Nusselt number has been calculated using -NTU method. A new correlation has been proposed as a function of Reynolds number and Prandtl number. The heat transfer rate, effectiveness, has been significantly higher compared to pure water and with increasing volume fraction of nanoparticles.
Homicide in southern India—A five-year retrospective study  [PDF]
Sachidananda Mohanty, Sujan Kumar Mohanty, Kiran Kumar Patnaik
Forensic Medicine and Anatomy Research (FMAR) , 2013, DOI: 10.4236/fmar.2013.12004
Abstract: Homicide has become a common practice reflecting anger in southern India. The purpose of this study was to identify the potential risk factors and susceptible victims. This retrospective study analyses the data of 590 cases. Our study revealed that the victims were mostly males of 21 - 30 years, married (63.56%), illiterates (44.07%), low socioeconomic status and belong to rural areas. The laborers and farmers were almost equally affected in males and housewives in females. Outdoor incidents were more (61.86%). Majority of victims were innocent (82.20%) with no previous history of cognizable offence. Blood alcohol was found positive in 30.23% of victims. Sharp cutting weapons were mostly used, with hemorrhage and shock being the most common cause of death. Previous enmity and familial disharmony were the two common causes behind such heinous crime. Most victims had injuries over multiple body parts. Some potential risk factors and their preventive measures pointed at the end.
Dental age estimation using amino acid racemization
Kiran Kumar K
Indian Journal of Dental Research , 2008,
International Journal of Research and Reviews in Applied Sciences , 2009,
Semantic Web Approach towards Interoperability and Privacy issues in Social Networks
V. Kiran Kumar
Computer Science , 2014, DOI: 10.5121/ijwsc.2014.5302
Abstract: The Social Web is a set of social relations that link people through World Wide Web. This Social Web encompasses how the websites and software are designed and developed to support social relations. The new paradigms, tools and web services introduced by Social Web are widely accepted by internet users. The main drawbacks of these tools are it acts as independent data silos; hence interoperability among applications is a complex issue. This paper focuses on this issue and how best we can use semantic web technologies to achieve interoperability among applications.
A Review of Epilepsy Diagnosis Using PET Parameters  [PDF]
Yadalam Kiran Kumar, Shashi Bhushan Mehta, Uday Patil
Journal of Behavioral and Brain Science (JBBS) , 2012, DOI: 10.4236/jbbs.2012.23049
Abstract: Epilepsy is caused by abnormal excessive electric discharges from the neurons in the brain. Epileptic seizures are non- specific responses of the brain to many types of insults. The structural abnormalities causing epilepsy can be identified using various state of art imaging methods. Through a combination of brain activity monitoring, imaging and mapping techniques, physicians can locate the specific area in the brain causing epileptic discharges and identify its location in relation to those areas in the brain controlling vital functions. Positron Emission Tomography (PET) has emerged as a useful tool to identify abnormal metabolic activity of the epileptogenic foci. Parameters like asymmetric index, stan- dard uptake value (SUV) etc obtained by PET are processed and analyzed for identifying the origin of epileptic sei- zures. This paper discuss the techniques used to diagnose in general and to localize the epileptogenic regions using post-processing other features on PET imaging.
Multimodality Vessel Modeling Analysis for Cerebral Arteriovenous Malformation  [PDF]
Y. Kiran Kumar, Shashi B. Mehta, Manjunath Ramachandra
Journal of Behavioral and Brain Science (JBBS) , 2014, DOI: 10.4236/jbbs.2014.41003

Cerebral arteriovenous malformations (AVMs) are a type of vascular anomaly consisting of large intertwined vascular growth (Nidus) that is prone to serious hemorrhaging and can result in patient death if left untreated. Intervention through surgical clipping of feeding and draining vessels to the Nidus is a common treatment. However, identification of which vessels to clip is challenging even to experienced surgeons aided by conventional image guidance systems. The lumped modeling for the Cerebral Arteriovenous Malformation (CAVM) hemodynamic analysis is of high importance in clinical world. As part of the treatment planning for CAVM, it is difficult for doctors to assess the NIDUS part, which may get rupture while inserting catheter. In this paper, we have proposed a non-invasive method for assessing the hemodynamic condition of AVM. The measurement of flow and pressure without intervention along the vessel is a big challenge due to occlusion, bending and thinning of the vessel in Arteriovenous Malformation patients. In this paper, we analyzed a lumped model for the vascular malformation using various imaging multi-modalities that help to analyze CAVM Structures.

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