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Search Results: 1 - 10 of 475 matches for " Sameer Bhole "
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Early childhood feeding practices and dental caries in preschool children: a multi-centre birth cohort study
Amit Arora, Jane A Scott, Sameer Bhole, Loc Do, Eli Schwarz, Anthony S Blinkhorn
BMC Public Health , 2011, DOI: 10.1186/1471-2458-11-28
Abstract: This is an observational cohort study and involves the recruitment of a birth cohort from disadvantaged communities in South Western Sydney. Mothers will be invited to join the study soon after the birth of their child at the time of the first home visit by Child and Family Health Nurses. Data on feeding practices and dental health behaviours will be gathered utilizing a telephone interview at 4, 8 and 12 months, and thereafter at 6 monthly intervals until the child is aged 5 years. Information collected will include a) initiation and duration of breastfeeding, b) introduction of solid food, c) intake of cariogenic and non-cariogenic foods, d) fluoride exposure, and e) oral hygiene practices. Children will have a dental and anthropometric examination at 2 and 5 years of age and the main outcome measures will be oral health quality of life, caries prevalence and caries incidence.This study will provide evidence of the association of early childhood feeding practices and the oral health of preschool children. In addition, information will be collected on breastfeeding practices and the oral health concerns of mothers living in disadvantaged areas in South Western Sydney.Dental caries (decay) is one of the most prevalent chronic childhood diseases worldwide and is a major problem both from a population health perspective and for individual families who have to deal with a young child suffering from toothache [1-3]. In 1996, 39 percent of Australian 6 year-old children had dental caries [4,5], and since that time caries experience in Australian children in all States and Territories has increased [5,6]. The 2002 Child Dental Health Survey of Australia reported that 45 percent of 5-year-olds had one or more decayed or missing teeth and 10 percent of those children examined were found to have more than seven decayed teeth [7]. Local data from the Centre for Oral Health Strategy (NSW Health) indicates that despite water fluoridation, dental caries is a major public health
Enhancement of water solubility of felodipine by preparing solid dispersion using poly-ethylene glycol 6000 and poly-vinyl alcohol
Bhole P,Patil V
Asian Journal of Pharmaceutics , 2009,
Abstract: In the present study, solid dispersion (SD) of felodipine was prepared to enhance its water solubility. The SD was prepared by using polyethylene glycol (PEG 6000) and polyvinyl alcohol (PVA) as a carrier with different drug polymer ratios using different techniques (physical mixing and solvent evaporation). The product was characterized by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and in vitro dissolution rate studies. Phase solubility analysis was performed in aqueous solution for drug polymer interactions. DSC and XRD analysis demonstrated the conversion of felodipine to amorphous form with both physical mixture (PM) and SD. SD with PVA released 95% of the drug in 85 min as compared with 89% of drug released in 90 min by SD with PEG 6000. Thus, SD with both polymers increased drug release, particularly greater in the case of PVA than PEG 6000.
ANTIFERROMAGNETIC TO PARAMAGNETIC PHASE TRANSITIONS IN BISMUTH FERRITE (BiFeO3) CERAMICS BY SOLID STATE REACTION
Chandrashekhar P. Bhole
Ceramics-Silikáty , 2012,
Abstract: This paper describes the synthesis of multiferroic BiFeO3 ceramics was prepared by solid state reaction and high energy ball milling method. The structural studies was carried out by using an X-ray diffraction pattern and demonstrated that the BiFeO3 ceramic crystallizes in a rhombhohedral perovskite phase. The ferroelectric hystersis loop measured at room temperature demonstrates a lossy loop with unsaturated behavior and symbolize a partial reversal of polarization. A dielectric constant with temperature measurement for BiFeO3 ceramic represents an anomaly around 350°C for all frequencies and intimately associated with antiferromagnetic to paramagnetic phase transition (TN) of BiFeO3.
Bound States of the Klein-Gordon for Exponential-Type Potentials in D-Dimensions  [PDF]
Sameer M. Ikhdair
Journal of Quantum Information Science (JQIS) , 2011, DOI: 10.4236/jqis.2011.12011
Abstract: The approximate analytic bound state solutions of the Klein-Gordon equation with equal scalar and vector exponential-type potentials including the centrifugal potential term are obtained for any arbitrary orbital quantum number l and dimensional space D. The relativistic/non-relativistic energy spectrum formula and the corresponding un-normalized radial wave functions, expressed in terms of the Jacobi polynomials and or the generalized hypergeometric functions have been obtained. A short-cut of the Nikiforov-Uvarov (NU) method is used in the solution. A unified treatment of the Eckart, Rosen-Morse, Hulthén and Woods-Saxon potential models can be easily derived from our general solution. The present calculations are found to be identical with those ones appearing in the literature. Further, based on the PT-symmetry, the bound state solutions of the trigonometric Rosen-Morse potential can be easily obtained.
Exact Solution of Dirac Equation with Charged Harmonic Oscillator in Electric Field: Bound States  [PDF]
Sameer M. Ikhdair
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.32023
Abstract: In some quantum chemical applications, the potential models are linear combination of single exactly solvable potentials. This is the case equivalent of the Stark effect for a charged harmonic oscillator (HO) in a uniform electric field of specific strength (HO in an external dipole field). We obtain the exact s-wave solutions of the Dirac equation for some potential models which are linear combination of single exactly solvable potentials (ESPs). In the framework of the spin and pseudospin symmetric concept, we calculate analytical expressions for the energy spectrum and the corresponding two-component upper- and lower-spinors of the two Dirac particles by using the Nikiforov-Uvarov (NU) method, in closed form. The nonrelativistic limit of the solution is also studied and compared with the other works.
Spectrophotometric Determination of Fluoride in Groundwater Using Resorcin Blue Complexes  [PDF]
Zaher Barghouthi, Sameer Amereih
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.39085
Abstract: New simple and sensitive spectrophotometric determination of fluoride in drinking groundwater has been developed using aluminium-resorcin blue complex. The method is based on the reaction of fluoride with the coloured complex to produce colourless aluminium fluoride complex and releasing of the free ligand. The relationship of the reaction of flu-oride with the complex is sixth-order polynomial function. The reaction reaches equilibrium at fluoride concentration of 0.054 mM. The equilibrium constant (Keq) was calculated as 1.12 × 1014. Beer-Lambert law is obeyed in the range 0.0 - 0.024 mM of fluoride (0.0 - 1.0 mg·L-1). The molar absorptivity at 502 nm is 6.45 × 103 L·mol-1·cm-1. Fluoride concentration higher than 1.0 mg·L-1 can be measured after proper dilution. The sensitivity, detection limit, quantitation limit, and the percentage recovery of 0.75 mg·L-1 fluoride for the method were found to be 0.357 μg·ml-1., 0.07 mg·L-1, 0.2 mg·L-1, and 101.1 respectively.
RAPD-SCAR Markers: An Interface Tool for Authentication of Traits  [PDF]
Sameer S. Bhagyawant
Journal of Biosciences and Medicines (JBM) , 2016, DOI: 10.4236/jbm.2016.41001
Abstract: The versatility of the PCR technique is that several kinds of primers can be explored for genome analysis depending on the purpose of study. The easy to access and low cost PCR-based markers include Random Amplified Polymorphic DNA (RAPD). The RAPD markers are easy to develop but lack of reproducibility makes it less reliable and obstacles to their further use in authentication of traits. In addition, other PCR and non PCR based markers like Amplified Fragment Length Polymorphism (AFLP), Simple Sequence Repeat (SSR) and Restriction Fragment Length Polymorphism (RFLP) are also employed in authentication of traits with certain restrictions vis-à-vis use of radioactive materials, high cost and requirement of sequence information etc. Therefore, this problem can be overcome by converting RAPD markers to more robust sequence characterized amplified regions i.e. SCAR markers. SCARs are locus specific, co-dominant in nature and amplified by PCR using specific 15 - 30 bp DNA fragments. For developing SCAR markers, primers are designed from the nucleotide sequences of a cloned RAPD fragments linked to a trait of interest. SCAR markers are easy to develop and reliable tools for DNA fingerprinting. This mini review is an attempt to summarize efficacy of RAPD-SCAR interface in authentication of traits.
A search for doxycycline-dependent mutations that increase Drosophila melanogaster life span identifies the VhaSFD, Sugar baby, filamin, fwd and Cctl genes
Gary N Landis, Deepak Bhole, John Tower
Genome Biology , 2003, DOI: 10.1186/gb-2003-4-2-r8
Abstract: PdL was mobilized to around 10,000 new locations in the Drosophila melanogaster genome and used to search for genes that would extend life span when overexpressed. Six lines were identified in which there was a 5-17% increase in life span in the presence of doxyxcycline. The mutations were molecularly characterized and in each case a gene was found to be overexpressed using northern blots. Two genes did not have previously known phenotypes and are implicated in membrane transport: VhaSFD encodes a regulatory subunit of the vacuolar ATPase proton pump (H+-ATPase), whereas Sugar baby (Sug) is related to a maltose permease from Bacillus. Three PdL mutations identified previously characterized genes: filamin encodes the homolog of an actin-polymerizing protein that interacts with presenilins. four wheel drive (fwd) encodes a phosphatidylinositol-4-kinase (PI 4-kinase) and CTP:phosphocholine cytidylyltransferase-l (Cctl) encodes the rate-limiting enzyme in phosphatidylcholine synthesis. Finally, an apparently novel gene (Red herring, Rdh) was found in the first intron of the encore gene.Screening for conditional mutations that increase Drosophila life span has identified genes implicated in membrane transport, phospholipid metabolism and signaling, and actin cytoskeleton organization.Drosophila melanogaster has been a leading model for the study of aging for over 80 years [1,2,3,4,5]. The intensive use of Drosophila as a model for developmental biology has produced a wealth of genetic and molecular biological tools that are readily adapted to the study of aging. Aging is associated with characteristic changes at the physiological and molecular level, however organismal life span is still the best measure of aging rate. The most successful studies of aging generally involve manipulations that increase life span. Experimental alterations of environment or genetic makeup that cause decreased life span might create novel diseases or pathologies that do not usually limit life
Modeling the dependence of strength on grain sizes in nanocrystalline materials
Wei He, Sanjeev D Bhole and DaoLun Chen
Science and Technology of Advanced Materials , 2008,
Abstract: A model was developed to describe the grain size dependence of hardness (or strength) in nanocrystalline materials by combining the Hall–Petch relationship for larger grains with a coherent polycrystal model for nanoscale grains and introducing a log-normal distribution of grain sizes. The transition from the Hall–Petch relationship to the coherent polycrystal mechanism was shown to be a gradual process. The hardness in the nanoscale regime was observed to increase with decreasing grain boundary affected zone (or effective grain boundary thickness, Δ) in the form of Δ 1/2. The critical grain size increased linearly with increasing Δ. The variation of the calculated hardness value with the grain size was observed to be in agreement with the experimental data reported in the literature.
Reducing Power Consumption in Peer-to- Peer System
Ashish T. Bhole,Bhushan R. Nandwalkar
International Journal on Computer Science and Engineering , 2012,
Abstract: In peer-to-peer (P2P) system every node is peer and there is no centralized server. In this paper we discuss how to reduce the total electric power consumption of computers in peer to peer system. Firstwe discuss the Round Robin method for reducing power consumption. Then we discuss our proposed load balancer method with queue system for reducing the total power consumption of server peer in peer topeer system.
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