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An Adaptively Accelerated Bayesian Deblurring Method with Entropy Prior
Singh, Manoj Kumar,Tiwary, Uma Shanker,Kim, Yong-Hoon Hindawi Publishing Corporation 2008 EURASIP journal on advances in signal processing Vol.2008 No.1
<P>The development of an efficient adaptively accelerated iterative deblurring algorithm based on Bayesian statistical concept has been reported. Entropy of an image has been used as a “prior” distribution and instead of additive form, used in conventional acceleration methods an exponent form of relaxation constant has been used for acceleration. Thus the proposed method is called hereafter as adaptively accelerated maximum a posteriori with entropy prior (AAMAPE). Based on empirical observations in different experiments, the exponent is computed adaptively using first-order derivatives of the deblurred image from previous two iterations. This exponent improves speed of the AAMAPE method in early stages and ensures stability at later stages of iteration. In AAMAPE method, we also consider the constraint of the nonnegativity and flux conservation. The paper discusses the fundamental idea of the Bayesian image deblurring with the use of entropy as prior, and the analytical analysis of superresolution and the noise amplification characteristics of the proposed method. The experimental results show that the proposed AAMAPE method gives lower RMSE and higher SNR in 44% lesser iterations as compared to nonaccelerated maximum a posteriori with entropy prior (MAPE) method. Moreover, AAMAPE followed by wavelet wiener filtering gives better result than the state-of-the-art methods.</P>
Singh, Shiva Pratap,Natesan, Ramachandran,Sharma, Nandini,Goel, Anil Kumar,Singh, Manoj Kumar,Kharche, Suresh Dinkar Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.1
Objective: This study was conducted to assess the level of pregnancy-associated glycoprotein (PAG) in whole and skim milk samples, and its suitability for early pregnancy diagnosis in goats. Methods: A two-step sandwich enzyme-linked immunosorbent assay (ELISA) system for estimation of milk PAG was developed and validated, which employed caprine-PAG specific polyclonal antisera. Whole and skim milk samples (n = 210 each) from fifteen multiparous goats were collected on alternate days from d 10 to d 30, and thereafter weekly till d 51 post-mating. PAG levels in milk samples were estimated by ELISA and the pregnancies were confirmed at d40 post-mating by transrectal ultrasonography (TRUS). Results: The level of PAG in whole and skim milk samples of both pregnant and nonpregnant goats remained below the threshold values until d 24 after mating. Thereafter, PAG concentration in whole and skim milk increased steadily in pregnant goats, whereas it continued below the threshold in non-pregnant does. The PAG profiles in whole and skim milk of pregnant goats were almost similar and exhibited strong positive relationship (r = 0.891; p<0.001). Day 26 post-mating was identified as the first time-point for significantly (p<0.05) higher milk PAG concentration in pregnant goats than to non-pregnant goats. When compared to TRUS examination for pregnancy diagnosis, the accuracy and specificity of PAG ELISA using whole and skim milk samples were 94.5% and 95.4%; and 95.3% and 100%, respectively. The high values of area-under-curve (0.904 [whole milk] and 0.922 [skim milk]), demonstrate outstanding discrimination ability of the milk assays. Among the sampling dates chosen, d 37 post-mating was identified as the best suitable time point for collection of milk samples to detect pregnancy in goats. Conclusion: The PAG concentration in whole and skim milk of goats collected between days 26 and 51 post-breeding can be used for the accurate prediction of pregnancy and may be useful for assisting management decisions in goat flocks.
Manoj Kumar,Kuldeep Bauddh,Manish Sainger,Poonam Ahlawat Sainger,Jay Shankar Singh,Rana Pratap Singh 한국작물학회 2012 Journal of crop science and biotechnology Vol.15 No.2
Field experiments were conducted to evaluate the effects of eco-friendly organic matrix entrapped urea (OMEU) on growth, productivity,and yield of rice (Oryza sativa L. cv. Basmati) and soil enrichment in the paddy field at Rohtak (Haryana) located near Delhi. The OMEU prepared in granular form contained cow dung, rice bran (grain cover of Oryza sativa), powder of neem leaves (Azadirachta indica), and clay soil (diameter of particles < 0.02 mm) in 1:1:1:1 ratios and saresh (plant gum of Acacia sp.) as binder along with half of the recommended dose of commercially available soluble urea (free urea; FU). Single basal application of OMEU showed an increase in plant growth in terms of fresh and dry weights, root length, root, leaf and tiller numbers, soluble protein, total N and ammonium in leaves, productivity in terms of grain and straw yield, and nutritional and microbial activities of field soil over free form of urea and no fertilizer application. Nutritional status of rice grains was also improved over the free urea and no fertilizer controls. Our data indicate that OMEU, which is low cost and based on bio-degradable, non-toxic, and locally available agro-waste,can be attempted to replace the conventional use of soluble urea in rice.
Mathematical Model to Analyze Coiling Feasibility at Downcoiler in Hot Strip Mill
Manoj Krishna Majumder,Potnuru Venkata Dilip,Pawan Kumar Singh,Gaurav Singh,Saurabh Gaur,Rashmi Ranjan Samantaray,Sanjay Chandra 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.10
The coiling of a steel strip in a Downcoiler is an integrated part of the hot-rolled steel production line. Failure to coiling results damage to finished rolled strip along with mill downtime due to cobble. Thus, coiling success in Downcoiler is a critical concern for production of hot rolled steel strip. A mathematical model has been developed to analyze coiling feasibility for new grade of high strength steel to be rolled for the first time in the mill and to thereby identify a safe operating window for the coiling-process parameters. This has significant benefit in reducing the risk of coiling failure during plant trial and thus product development cycle time. The model is based on the estimation of coiler tension for a new grade with reference to mill-based physical data of coiling compactness as defined by a wrapper angle from known grades, coiled in the mill. This is followed by computation and comparison of coiling torque vis-à-vis the capacity of the Downcoiler allows a decision to be taken about the coiling feasibility of the new grade. It is believed that it is for the first time that a coiling feasibility algorithm has been developed and discussed. The model has been widely used within Tata Steel to carry out plant trails for the development of new grade as well as rolling of new section in existing grades at its Hot Strip Mill in Indian plant at Kalinganagar.
Polarized Raman scattering and lattice eigenmodes of antiferromagnetic NdFeO<sub>3</sub>
Singh, Manoj K.,Jang, Hyun M.,Gupta, H. C.,Katiyar, Ram S. John Wiley Sons, Ltd. 2008 JOURNAL OF RAMAN SPECTROSCOPY - Vol.39 No.7
<P>The first- and second-order Raman-active phonons in the orthorhombic Pbnm NdFeO<SUB>3</SUB> single crystals were studied by means of polarized Raman scattering and lattice dynamics computations (LDC). The zone-center phonons of A<SUB>g</SUB> symmetry were distinguished from the B<SUB>1g</SUB> eigenmodes by performing polarized Raman scattering experiments using two parallel polarization configurations, X′(ZZ)X′ and Z(X′X′)Z. With the help of LDC, we were able to assign most of the observed Raman-active modes, including phonons of B<SUB>2g</SUB> and B<SUB>3g</SUB> symmetry. The LDC results indicated that among the 16 force constants employed, the one corresponding to the stretching vibration between the central Fe cation and the axial oxygen atom in a FeO<SUB>6</SUB> octahedron unit had the largest value. This suggests that the B-site Fe cation is more tightly bound to the axial O1 ion than the other two equatorial O2 ions. It was further shown that at higher wavenumbers, the displacement of oxygen atoms contributed dominantly to the zone-center vibrations. Copyright © 2008 John Wiley & Sons, Ltd.</P>
Singh, Vijay,Seshadri, M.,Singh, N.,Singh, Pramod K.,Tiwari, Manoj K.,Irfan, Muhammad Elsevier 2018 OPTIK -STUTTGART- Vol.158 No.-
<P><B>Abstract</B></P> <P>ZnMgAl<SUB>10</SUB>O<SUB>17</SUB>-phosphor samples doped with Er<SUP>3+</SUP> ions and codoped with both Er<SUP>3+</SUP> and Yb<SUP>3+</SUP> ions were prepared using a combustion method. The formation of combustion products was confirmed by the XRD analysis. Upon the excitation at 980 nm, the IR-emission spectra of ∼1.53 μm were measured for the Er<SUP>3+</SUP>-doped and Er<SUP>3+</SUP>/Yb<SUP>3+</SUP>-codoped ZnMgAl<SUB>10</SUB>O<SUB>17</SUB>-phosphor samples. The deconvolvement of the emission spectra and the fitting analysis suggest that the Er<SUP>3+</SUP> ions occupied the same sites in both phosphor samples. Further, the wavelength of the sublevel-split components and the effective linewidths were determined. The significant enhancement of the IR-emission intensity and the broadening of the Er<SUP>3+</SUP> ions (<SUP>4</SUP>I<SUB>13/2</SUB> → <SUP>4</SUP>I<SUB>15/2</SUB>) in the prepared phosphors were explored.</P>
Manoj K. Singh,Rahul Roy,Varun Shetty,Sanjay Goja 한국간담췌외과학회 2020 Annals of hepato-biliary-pancreatic surgery Vol.24 No.4
Surgical resection for Hepatocellular carcinoma (HCC) with atrial tumor thrombus is a rare life saving procedure. A case of left lateral segment liver tumor (HCC) with atrial tumor thrombus resected with use of cardio-pulmonary bypass is presented.
Dip coated nanostructured ZnO thin film: Synthesis and application
Vanaraja, Manoj,Muthukrishnan, Karthika,Boomadevi, Shanmugam,Karn, Rakesh Kumar,Singh, Vijay,Singh, Pramod K.,Pandiyan, Krishnamoorthy Elsevier 2016 CERAMICS INTERNATIONAL Vol.42 No.3
<P><B>Abstract</B></P> <P>The preparation and characterization of highly selective room temperature ammonia sensorusing nanostructured dip coated ZnO thin films were discused. A highly viscous precursor solution was prepared using Zinc Nitrate hexahydrate as a starting material and Sodium Carboxymethyl Cellulose as a thickening agent. Morphology and structure of the annealed films were analyzed by field emission scanning electron microscopy and X-ray Diffractometer characterization techniques. The presence of zinc and oxygen in the sample was confirmed with Fourier Transform Infrared spectroscopy The gas sensing behavior of ZnO thin films was studied at room temperature. It exhibited very high selectivity and excellent sensing towards ammonia gas. Further, sensing behavior towards other gases like ethanol and formaldehyde and the various concentrations of NH<SUB>3</SUB> were studied.</P>
Kumar, Manoj,Bauddh, Kuldeep,Sainger, Manish,Sainger, Poonam Ahlawat,Singh, Jay Shankar,Singh, Rana Pratap 한국작물학회 2012 Journal of crop science and biotechnology Vol.15 No.2
Field experiments were conducted to evaluate the effects of eco-friendly organic matrix entrapped urea (OMEU) on growth, productivity, and yield of rice (Oryza sativa L. cv. Basmati) and soil enrichment in the paddy field at Rohtak (Haryana) located near Delhi. The OMEU prepared in granular form contained cow dung, rice bran (grain cover of Oryza sativa), powder of neem leaves (Azadirachta indica), and clay soil (diameter of particles < 0.02 mm) in 1:1:1:1 ratios and saresh (plant gum of Acacia sp.) as binder along with half of the recommended dose of commercially available soluble urea (free urea; FU). Single basal application of OMEU showed an increase in plant growth in terms of fresh and dry weights, root length, root, leaf and tiller numbers, soluble protein, total N and ammonium in leaves, productivity in terms of grain and straw yield, and nutritional and microbial activities of field soil over free form of urea and no fertilizer application. Nutritional status of rice grains was also improved over the free urea and no fertilizer controls. Our data indicate that OMEU, which is low cost and based on bio-degradable, non-toxic, and locally available agro-waste, can be attempted to replace the conventional use of soluble urea in rice.