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Search Results: 1 - 10 of 1416 matches for " Rashmi Rani "
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Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co-Modified (K,Na)NbO3-Based Ceramics  [PDF]
Rashmi Rani, Seema Sharma
Materials Sciences and Applications (MSA) , 2011, DOI: 10.4236/msa.2011.210191
Abstract: Polycrystalline samples of Lead free (K0.5Na0.5)1-x(Li)x(Sb)x(Nb)1-xO3 ceramics with nominal compositions (x = 0.040 to 0.060) have been prepared by high temperature solid state reaction technique. X-ray diffraction (XRD) pattern shows that the crystal structure transforms from orthorhombic to tetragonal as Li and Sb content increases. Normal sintering process yield compounds with density ~98.2% of the theoretical value. Densification of the Li and Sb co-doped KNN ceramics might be explained by the liquid-phase sintering. This may be attributed to the low melting temperature of Li compounds that appears to promote the formation of a liquid phase during sintering.
Preparation and Characterization of SnO2 Nanofibers via Electrospinning  [PDF]
Rashmi Rani, Seema Sharma
Advances in Nanoparticles (ANP) , 2016, DOI: 10.4236/anp.2016.51006
Abstract: Tin oxide (SnO2) nanofibers are successfully prepared by electrospinning homogeneous viscous solutions of tin acetate in polyvinylpyrrolidone (PVP). The electrospinning is carried out by applying a DC voltage to the tip of a syringe and maintaining the tip to collector distance (TCD), i.e. at DC electric field of 1.25 kVcm1. The electrospun nanofibers are calcined between 550 and 650 for 4 h. Both spun and heat treated nanofibers are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infra red spectroscopy (FTIR) etc. XRD analysis of calcined nanofibers confirms the formation of pure tin oxide. TEM study showed that fibers have a polycrystalline structure with multiple nano-grains.
Differentiation of Adulterated Meat Products through Molecular Technique: PCR-RFLP
Rashmi Verma, Bhoomika Saluja and Rina Rani Singh
Octa Journal of Biosciences , 2013,
Abstract: Meat adulterations of different species are undetectable and it is common practice globally. In the field of food analysis, species determination is mostly sufficient, but simultaneous detection of several species in a single food product is desirable. The aim of the study was to distinguish between meats of two different species through PCR-RFLP analysis. The meat of two species were used include domestic pig (Sus scrofa; Porcidae) and domestic goat (Capra hircus; Bovidae). DNA was isolated from these samples , followed by amplification through PCR and further species was differentiated by RFLP using five different restriction endonuclease (RE) enzymes. The DNA sequences of different species are different, hence does not digest by same enzyme. The number and position of bands obtained after digestion were different in two species. In case of meat adulteration, the specific number and position of bands of DNA of a particular species will not be obtained, rather bands will be formed at intermediate positions and number of bands may vary. Thus, PCR-RFLP method is a potential tool for forensic identification and to differentiate specific meat sample and this molecular technique is an important tool to examine adulteration in meat food products.
Perception of mothers about their daughters future in rural Karnataka
Indian Journal of Community Medicine , 2010,
A Novel Low Temperature Synthesis of KNN Nanoparticles by Facile Wet Chemical Method  [PDF]
Rashmi Rani, Seema Sharma, Marzia Quaglio, Radheshyam Rai, Stefano Bianco, Diego Pugliese, Candido Fabrizio Pirri
Materials Sciences and Applications (MSA) , 2017, DOI: 10.4236/msa.2017.83017
Abstract: Sodium potassium niobate (KNN) (K0.5Na0.5NbO3) nanopowder with a mean particle size of about 20 - 30 nm was synthesized by wet chemical route using Nb2O5 as Nb source. A solution of K, Na and Nb cations was prepared, which resulted in a clear gel after the thermal treatment. Phase analysis, microstructure and morphology of the powder were determined by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Field Emission Scanning Electron Microscopy (FESEM). The obtained gel was first analyzed by Thermo Gravimetric Analyzer (TGA) and Differential Scanning Calorimetry (DSC), and then calcined at different temperatures of 400, 500, 600 and 700. The X-Ray Diffraction (XRD) patterns of the synthesized samples confirmed the formation of the orthorhombic crystal phase of K0.5Na0.5NbO3 at 500?C, a temperature significantly lower than that typically used in the conventional mixed oxide route. The process developed in this work is convenient to realize the mass production of KNN nanopowders at low cost and suitable for various industrial applications.
Use of Image processing software in Hip Joint surgery  [PDF]
Rashmi Uddanwadiker
Advances in Bioscience and Biotechnology (ABB) , 2011, DOI: 10.4236/abb.2011.22011
Abstract: The scope of this project was to investigate the possibility of application of Image Processing Technique in the field of Shaft Alignment process. Misalignment of shaft using image processing software Visionbuilder was calculated. The further purpose of this project was to check whether the image processing technique can be used in bone transplant surgery. The model of the hip was used for the experimentation purpose. Image processing software Visionbuilder was used to match the profiles of the bone before implant and bone after implant.
Stress Analysis of Crane Hook and Validation by Photo-Elasticity  [PDF]
Rashmi Uddanwadiker
Engineering (ENG) , 2011, DOI: 10.4236/eng.2011.39115
Abstract: Crane Hooks are highly liable components and are always subjected to failure due to accumulation of large amount of stresses which can eventually lead to its failure. To study the stress pattern of crane hook in its loaded condition, a solid model of crane hook is prepared with the help of CMM and CAD software. Real time pattern of stress concentration in 3D model of crane hook is obtained. The stress distribution pattern is verified for its correctness on an acrylic model of crane hook using Diffused light Polariscope set up. By predicting the stress concentration area, the shape of the crane is modified to increase its working life and reduce the failure rates.
Study of various molar crown designs and their assessment  [PDF]
Rashmi Uddanwadiker
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.511077
Abstract: Dental crowns are best utilized as a way to improve the cosmetics of a tooth appearance when the crown simultaneously serves other purposes also, such as restoring a tooth to its original shape or strengthening a tooth. The study presents four different designs of molar crown depending upon the tooth loss. The finite element results obtained suggests that restored material which fills the treated cavity along with small portion of root canal can help in retaining the restored tooth and can allow larger deformations for stresses induced well within the limit.
Using the Notion of ‘Information Flow’ to Investigate Why a Signal May Stand Differently for Individuals  [PDF]
Rashmi Mantri, Junkang Feng
iBusiness (IB) , 2010, DOI: 10.4236/ib.2010.24041
Abstract: Studies over past century show that the organisations profoundly rely on signs (signals in general) and norms to operate. Information systems may be seen as systems of signs. Signs are indispensible part of norms, which people follow in order to act in an organisation. A signal or sign may convey different messages to different agents. If we eliminate merely subjective interpretations, which could be wrong from the receiver’s perspective, it must be the case that for such a phenomenon to happen the signal does carry different information for different individuals in the sense of actually informing them. We explore how this is possible in this paper. We observe that information theory and semiotics are strongly related. Therefore, rationally linking organisational semiotics and information theory in some way would be beneficial and highly desirable. Our approach is based upon semantic information and information flow theories put forward by Dretske, Barwise and Seligman along with basic notions of Stamper’s organisational semiotics, i.e. sign and norms and Devlin’s constraints. We exploit an S-B-R (information source (S) - information bearer (B) - information receiver(R)) framework, which incorporate the above mentioned theories to examine information creation, flow and receiving. We put forward the phenomena of information nesting, norms with which a signal or sign is involved and co-existing multiple S-B-R structures to elucidate this fact.
Asymmetric Variation in Soil Carbon Emission in Sub-Tropics  [PDF]
Rashmi Kant, Chirashree Ghosh
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.21012
Abstract: Carbon dioxide emission from soil, known as soil respiration, is one of the major sources of the atmospheric carbon. Understanding the relationship between emission rate and the factors associated with the emission process is important in global carbon emission management. The present study investigated soil respiration at three ecologically diverse locations in northern India. CO2 emission was measured in-situ by modified alkali absorption method at three different depths, top-soil (0 cm - 2 cm depth), mid-soil (20 cm depth) and deep-soil (40 cm depth) at each location. Rate of carbon emission from soil varied with location and time. The rate was higher at Riverine Zone (RZ) which had high soil moisture content and profuse ground vegetation compared to Hilly Zone (HZ) containing dry soil and scarce vegetation. The emission rate was also greater in grassland than the plantation area. Rate of carbon emission from soil was heterogeneous along different depths below the ground. Diel variation in emission rate was greater at HZ compared to RZ. Higher microbial population in soil was detected in RZ than HZ. However, the bacterial count out-numbered the fungal count in soils at most places. The study indicates a positive relationship between soil respiration rate and microbial abundance. The fungal population was strongly correlated with CO2 emission rate.
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