- Dr Kerur hails from Gadag, the well know place for production of cotton, ground nets, Onion and Red Chilli. He born ... moreDr Kerur hails from Gadag, the well know place for production of cotton, ground nets, Onion and Red Chilli. He born in a village called Aluvandi village, Tq. and Dist. Koppal He has completed up to secondary education at Gadag, B.Sc. degree from Karnataka Science College, Dharwad M Sc and Ph. D from Karnataka University, Dharwad. He got Ph D degree under the guidance of Professor S R Thondatadary in the field of Radiation Physics. He started his profession by joining as a Lecturer in Physics at Gulbarga University, Kalaburagi and he was serving as a Professor of Physics since September 2010 till his arrival here as Controller of Examination. He has experiences in administrative matters worked as Director of IQAC and Nodal Officer of RTI member of BOA, BOS and BOE’s of various universities in Karnataka and nearby States. Now, he is on deputation to Central University of Karnataka as Controller of Examinations since November 2018.edit
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The natural radioactivity due to Radium, Thorium and Potassium in environmental samples such as soil and building materials contributes to the radiation dose received by human beings significantly. For assessing the environmental... more
The natural radioactivity due to Radium, Thorium and Potassium in environmental samples such as soil and building materials contributes to the radiation dose received by human beings significantly. For assessing the environmental radiological impact to public it is essential to evaluate the activity levels of these nuclides. Using high-resolution Gamma ray spectrometry system the soil and few building material samples viz., granite, sand, brick collected from Shahpur region of North Karnataka were analysed and the radioactivity levels were estimated. The absorbed dose rate due to natural radionuclides was also calculated and the results are reported in this paper. The results obtained were observed to be normal in comparison with the World literature values for almost all samples whereas granite samples showed relatively higher activity and hence higher dose. This study provides a baseline data of radioactivity background levels in the Shahpur region of Gulbarga district and will be useful to assess any changes in the radioactive background level due to various man made processes.
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A new and accurate method to determine the mass attenuation coefficient, µm, for low photon energy employing NaI(Tl) X-ray detector and radioactive source is described. Effect of size of collimator and the selection of width of photopeak... more
A new and accurate method to determine the mass attenuation coefficient, µm, for low photon energy employing NaI(Tl) X-ray detector and radioactive source is described. Effect of size of collimator and the selection of width of photopeak for integration on the contribution from scattered photons to the transmitted intensity is studied systematically and optimum size of collimator and photopeak limits for integration are established. With a 6 mm diameter collimator and FWHM for photopeak limits it was found that Beer-Lambert's law was rigorously valid over transmission range of 50-2%. Using this method µ mw as determined for six elements that covered a wide atomic number range (12 <Z< 73) and two biological equivalent materials. The values so obtained agreed with theoretical values within 1% establishing the validity and accuracy of the present method which uses inexpensive moderate resolution detector. As the method permits higher transmission range better counting statist...
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Mass attenuation coefficients have been measured for rare-earth compounds at averaged photon energies 5.947 and 8.118keV. The measured values are compared with theoretical calculations. The disagreement between experiment and theory is... more
Mass attenuation coefficients have been measured for rare-earth compounds at averaged photon energies 5.947 and 8.118keV. The measured values are compared with theoretical calculations. The disagreement between experiment and theory is larger than the experimental error when the incident photon energy is close to the L shell absorption edge. Further away from the edge the agreement between experiment and theory
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The energy loss of 25 MeV protons in ferroelectric Barium Titanate [BT] single crystals was measured as a function of the temperature of BT with an accuracy of 0.06%. When the protons traversed the crystal along the ferroelectric axis... more
The energy loss of 25 MeV protons in ferroelectric Barium Titanate [BT] single crystals was measured as a function of the temperature of BT with an accuracy of 0.06%. When the protons traversed the crystal along the ferroelectric axis energy loss showed broad fluctuations with a peak-to-peak variation of 5% from the value at room temperature and the energy losses in ferroelectric and paraelectric phases of BT appeared to be nearly the same. When protons traversed the crystal in a direction perpendicular to the ferroelectric axis energy loss in the crystal remained independent of the crystal temperature in the ferroelectric phase. However, the energy loss in paraelectric phase appeared to be about 1.5% lower than that in the ferroelectric state. It is suggested that the observed results are indicative of a new mode of energy loss and can be related to the fluctuations in polarization of cluster of unit cells and the dynamics of their short-range order.
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Mass attenuation coefficients have been meas-ured for rare earth compounds at photon ener-gies 8.041, 8.907 and 13.347 keV. The measured values are compared with theoretical calcula-tions. The agreement between experiment and theory is... more
Mass attenuation coefficients have been meas-ured for rare earth compounds at photon ener-gies 8.041, 8.907 and 13.347 keV. The measured values are compared with theoretical calcula-tions. The agreement between experiment and theory is more than the experimental error when the incident photon energy is around the edge of the element present in the compound and agreeing with the theoretical values elsewhere. The difference in agreement between the theo-retical values and experimental values is attrib-uted to the EXAFS effects on the mass attenua-tion coefficient values.
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To study the X-ray Mass attenuation coefficients of different materials and medicinal plants is necessary for accurate X-ray fluorescent analysis. The present measurement X-ray mass attenuation coefficients held in to two types of... more
To study the X-ray Mass attenuation coefficients of different materials and medicinal plants is necessary for accurate X-ray fluorescent analysis. The present measurement X-ray mass attenuation coefficients held in to two types of medicinal plants which are collected from Gulbarga and Bidar districts, using different X-ray energy range 32.890 KeV to 13.596 KeV. The Measurement performed using NaI (TI) detector which coupled to MCA and a source of 241Am is used to get X-rays in the energies of Ba, Ag, Mo, and Rb target in to different thickness (40 mg to 100 mg) pellet samples of Eucalyptus Obliqua and Mangifera indica medicinal plants. These two medicinal plants are used as medicines in the Indian herbal systems. The theoretical values are compared with the experimental values obtained using WinXCOM, which is personal computer software package. In this present study the mass attenuation coefficient of x-ray increases with decreasing energies.
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To study the X-ray Mass attenuation coefficients of different materials and medicinal plants is necessary for accurate X-ray fluorescent analysis. The present measurement X-ray mass attenuation coefficients held in to two types of... more
To study the X-ray Mass attenuation coefficients of different materials and medicinal plants is necessary for accurate X-ray fluorescent analysis. The present measurement X-ray mass attenuation coefficients held in to two types of medicinal plants which are collected from Gulbarga and Bidar districts, using different X-ray energy range 32.890 KeV to 13.596 KeV. The Measurement performed using NaI (TI) detector which coupled to MCA and a source of 241Am is used to get X-rays in the energies of Ba, Ag, Mo, and Rb target in to different thickness (40 mg to 100 mg) pellet samples of Eucalyptus Obliqua and Mangifera indica medicinal plants. These two medicinal plants are used as medicines in the Indian herbal systems. The theoretical values are compared with the experimental values obtained using WinXCOM, which is personal computer software package. In this present study the mass attenuation coefficient of x-ray increases with decreasing energies.
Research Interests: Pediatrics, Research Methodology, Medical Education, Reproduction, Tropical Medicine, and 19 moreDeveloping Countries, Economic Development, Health, Medicine, Screening, Colonization, Pregnancy, Population, Humans, Colonisation, Female, Bacteria, Sepsis, Indian, Newborn Infant, Neonatal Sepsis, Correlation coefficient, Clinical Signs, and Escherichia Coli Infections
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A non-destructive analytical method was used to analyze the quality assurance of the pharmaceutical drugs by determining the mass absorption coefficient. The opted pharmaceutical product was a diclofenac sodium of different manufacturers... more
A non-destructive analytical method was used to analyze the quality assurance of the pharmaceutical drugs by determining the mass absorption coefficient. The opted pharmaceutical product was a diclofenac sodium of different manufacturers such as Diclomol, Diclogesic, Dynapar and Voveran Plus at different energies from 13 keV to 33 keV using Am-241 primary source with Rb, Mo, Ag and Ba are the secondary targets of radioactive sources. The photon intensity is analyzed using a good geometry HPGe detector system coupled to PC based Multichannel Analyzer (MCA). The qualities of the above said samples are discussed by the obtained values of mass attenuation coefficient. Introduction Analysis is a critical and integral part of the pharma business. Its only upon clearance of products on the analysis can the products be even released into the market. Hence, analytical methods as well as the involved analytical tools assume prime importance. Several well known analytical tools viz., HPLC, GC,...
301 resolution, spatial linearity (±2mm) and Hounsfield unit/CT (within the tolerance of ±40). These periodic tests show that the OBI system has good mechanical reliability and stable imagequality. It is essential to perform periodic... more
301 resolution, spatial linearity (±2mm) and Hounsfield unit/CT (within the tolerance of ±40). These periodic tests show that the OBI system has good mechanical reliability and stable imagequality. It is essential to perform periodic quality assurance tests for OBI to ensure better patient safety in the era of ultra-modern radiation oncology. Objective: The aim of this work is to compare the mass attenuation coefficient of the pharmaceutical product (Drug) that manufactured with similar formulation contains equal proportion of drug substances by the different manufacturer. Methods and Materials: A comparative study of mass attenuation coefficient has been done by adopting a non destructive x-ray spectrometric analysis technique for the commercial pharmaceutical product ie., acetaminophen commonly called as paracetamol incurred from three different manufacturers in the country and their brand names are femol, crocin, tyfy and pure (laboratory product: HPLC grade). The mass attenuatio...
Manjunath et al 16 Abstract:-Mass attenuation coefficient and effective atomic number of the active pharmaceutical ingredients viz, Alprazolam, Amiodar, Amiodarone, Ciprofloxacin, Diclofenac Sodium, Femotidine and Nimesulide have been... more
Manjunath et al 16 Abstract:-Mass attenuation coefficient and effective atomic number of the active pharmaceutical ingredients viz, Alprazolam, Amiodar, Amiodarone, Ciprofloxacin, Diclofenac Sodium, Femotidine and Nimesulide have been calculated over a wide energy range from 1 keV to 100 GeV for total and partial photon interactions by using WinXCom. The estimated data results in change of mass attenuation coefficient and electron density are varies with energy and chemical composition of the active pharmaceutical ingredients (API's) in drugs. The results are discussed in the light of photon interaction with energy and effective atomic number of the API's in drug are shown in the logarithmic graphs.
Research Interests: Female, Animals, Male, Bacteria, Clinical Sciences, and 5 moreColitis, Intestines, Microbiota, Colon, and Immunoglobulins
Necrotizing fasciitis (NF) is a life threatening soft tissue infection usually associated with the trauma and immunodeficiency. We report a case of necrotizing fasciitis spreading from the chest wall in a healthy infant with a history of... more
Necrotizing fasciitis (NF) is a life threatening soft tissue infection usually associated with the trauma and immunodeficiency. We report a case of necrotizing fasciitis spreading from the chest wall in a healthy infant with a history of betamethasone intake for a month. Coagulase negative Staphylococcus aureus (CONS) was isolated from the blood culture. Child succumbed to necrotizing fasciitis due to multi-organ dysfunction and spreading gangrene. Early debridement and appropriate antibiotic therapy in an intensive care setup may improve the outcome. Oral betamethasone drops sold over the counter without prescription in India may be make the children vulnerable to serious infections.
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The total mass attenuation coefficient for Potassium dichromate, Potassium chromate and Manganese acetate compounds are measured at different photon energies 5.895, 6.404, 6.490, 7.058, 8.041 and 14.390 keV using Fe-55, Co-57 and 241Am... more
The total mass attenuation coefficient for Potassium dichromate, Potassium chromate and Manganese acetate compounds are measured at different photon energies 5.895, 6.404, 6.490, 7.058, 8.041 and 14.390 keV using Fe-55, Co-57 and 241Am source with Copper target, radioactive sources. The photon intensity is analyzed using a high resolution HPGe detector system coupled to MCA under good geometrical arrangement. The obtained values of mass attenuation coefficient values are compared with theoretical values. This study suggests that measured mass attenuation coefficient values at and near absorption edges differ from the theoretical value by about 5-28%.
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ABSTRACT
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Total mass attenuation coefficients (MAC) of x-rays in the energy range from 5.0 to 17.864 keV were measured using HPGe detector system. The obtained MAC values compared with theoretical values, agreement found to be good when the... more
Total mass attenuation coefficients (MAC) of x-rays in the energy range from 5.0 to 17.864 keV were measured using HPGe detector system. The obtained MAC values compared with theoretical values, agreement found to be good when the incident photon energy is far below and far away from the L edge. In some cases, disagreement is observed between measured and the theory MAC values near L absorption edges. In the present work, the non validity of the mixture rule and also the discrepancies of the obtained values with the theory near the L absorption edge are discussed.
Objectives: The instrument is calibrated using several solutions of known concentrations, and standardize the instrument by different Cathode Lamps. To estimate the Trace, toxic and heavy elemental concentration in selected some Indian... more
Objectives: The instrument is calibrated using several solutions of known concentrations, and standardize the instrument by different Cathode Lamps. To estimate the Trace, toxic and heavy elemental concentration in selected some Indian Ayurvedic (Jedi butte) medicinal plants by using Atomic absorption spectrometer. To study the different elements absorb characteristic wavelengths of light. Methods and Materials: An atomic absorption spectrophotometer consists of a light source, a sample Compartment and a detector. The source of light is a lamp whose cathode is composed of the element being measured. Each element requires a different lamp likes the hollow-cathode lamps for Al, Cu, Mg, Zn, Cd (Photon) were employed as radiation source and calibrated using 100ml stranded solutions in equal ratio. The collected medicinal plants washed with water and dried for one month and using electrical grander prepared powder form to get fine powder of ash. Using ashes of different samples prepared ...
There are currently no standard recommendations regarding the optimal method to obtain a blood culture in neonates. We performed an online survey of the membership of the Section on Perinatal Pediatrics of the American Academy of... more
There are currently no standard recommendations regarding the optimal method to obtain a blood culture in neonates. We performed an online survey of the membership of the Section on Perinatal Pediatrics of the American Academy of Pediatrics regarding their practices when drawing blood cultures. The survey included questions regarding the type of antisepsis used in preparing the site for sampling, the amount of blood drawn and preferred site for obtaining the culture. Overall 715 of 2955 (24%) members responded to the survey. There was wide variability in responses to all of the questions. However, virtually all providers washed their hands and wore gloves while performing the procedure, and virtually all providers obtained ≥0.5 mL of blood for the sample. Given the wide variability of practices among the members of the Section, evidence-based standards are needed to guide clinical practice for this procedure.
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ABSTRACT A finite element formulation for geometrically non-linear bending behavior of smart structures integrated with piezoelectric fiber-reinforced composite (AFC/MFC) layer acting as distributed actuator is presented in this article.... more
ABSTRACT A finite element formulation for geometrically non-linear bending behavior of smart structures integrated with piezoelectric fiber-reinforced composite (AFC/MFC) layer acting as distributed actuator is presented in this article. The formulation of this hygro-thermo-electro-mechanical coupled problem is based on the first-order shear deformation theory (FSDT) and the von Kármán type geometric non-linearity. Resulting non-linear algebraic governing equations are linearized by Newton–Raphson iterative method. A developed finite element formulation is initially solved for validation and comparison with existing results. A wide variety of numerical examples considering cross-ply laminated substrates subjected to combined mechanical, hygrothermal and electrical loads are presented. The effect of piezoelectric fiber orientation in an actuator to counteract non-linear deflections is analyzed.
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Chronic intractable constipation (CIC) is a debilitating disease that is challenging to manage. Treatment options in children include medications, enemas, and surgical management in selected cases. We reviewed medical records of pediatric... more
Chronic intractable constipation (CIC) is a debilitating disease that is challenging to manage. Treatment options in children include medications, enemas, and surgical management in selected cases. We reviewed medical records of pediatric patients diagnosed as having CIC at Tufts Medical Center from 2005 to 2012. Demographic variables, diagnostic procedures, and medical and surgical outcomes were collected. Clinical outcome was defined using the Rome III criteria. A total of 14 patients were included in the study (10 boys). The age range was 10 to 21 years. All of the patients had the diagnosis of CIC. Eleven patients had cecostomy placement. During the follow-up period, 10 patients underwent total abdominal colectomy with ileorectal anastomosis, 1 had total colectomy with ileostomy, and 1 had partial colectomy with colorectal anastomosis. Successful clinical outcome was reported in 7 patients with 3 patients reporting persistent fecal incontinence. Colonic motility studies were performed on 12 patients (colonic neuropathy in 11 patients and normal study in 1 patient). Defecography was consistent with isolated pelvic floor dysfunction in 1 patient, abnormal motility and anatomy in 1 patient, pelvic floor dysfunction and abnormal motility in 2 patients, and found abnormal motility only in 5. Defecography study was normal in 5 patients. All of the patients with abnormal colonic manometry underwent a surgical procedure. Anorectal manometry, colonic manometry, and defecography help in understanding the pathophysiology of defecation disorders in children. The majority of patients with abnormal colonic manometry underwent TAC-IRA. There was no statistical correlation between individual investigations (anorectal manometry, colonic manometry, and defecography) with surgical intervention (P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt; 0.35). TAC-IRA may be safe and useful intervention in a subset of patients when other treatment options have failed.
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The study was intended to evaluate the role of maternal genital bacteria and baby's surface colonization in early onset neonatal sepsis. Babies (born in the hospital of Jawaharlal Institute of Postgraduate Medical Education and... more
The study was intended to evaluate the role of maternal genital bacteria and baby's surface colonization in early onset neonatal sepsis. Babies (born in the hospital of Jawaharlal Institute of Postgraduate Medical Education and Research) who developed clinical signs of sepsis were studied. Swabs were collected for culture from baby's umbilicus, ear, throat in addition to gastric aspirate and blood culture. The genital tract of the mother was also studied for bacterial colonization. The organisms isolated from the maternal genital tract and baby's surface colonization were correlated with those isolated from blood culture by calculating Phi correlation coefficient. Esch coli was the most common organism isolated from maternal genital tract and surface cultures of babies, but Klebseilla-Spp was the most common organism isolated from blood. There was a significant correlation between surface colonization of babies and maternal genital bacteria, so also was baby's surfac...
Research Interests: Pediatrics, Research Methodology, Medical Education, Reproduction, Tropical Medicine, and 19 moreDeveloping Countries, Economic Development, Health, Medicine, Screening, Colonization, Pregnancy, Population, Humans, Colonisation, Female, Bacteria, Sepsis, Indian, Newborn Infant, Neonatal Sepsis, Correlation coefficient, Clinical Signs, and Escherichia Coli Infections
ABSTRACT
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We report our experimental results of measurements of x-ray attenuation coefficients of aqueous solutions of a light absorbing dye, indocyanine green, and an immunoadjuvant, glycated chitosan. In the treatment of metastatic tumors in rats... more
We report our experimental results of measurements of x-ray attenuation coefficients of aqueous solutions of a light absorbing dye, indocyanine green, and an immunoadjuvant, glycated chitosan. In the treatment of metastatic tumors in rats using a novel laser immunotherapy these solutions were administered in situ. The x-ray attenuation data of the solutions are essential to development of an x-ray digital imaging system for monitoring the administration of the solution, as well as for the distribution and the diffusion of the solution in tumors and in surrounding tissue. The composition of the solutions, the measurement system configuration, and the technique used to determine the attenuation coefficients are described. The experimental results show that glycated chitosan has a higher attenuation coefficient compared to indocyanine green and water. Our experimental data proved that, even at low concentrations, the x-ray attenuation through these aqueous solutions could be differentiated. Therefore, a digital x-ray imaging technique can be used effectively in monitoring and controlling the intratumor diffusion and distributions of these solutions.