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Singh, Manish Kumar,Amin, Syed Intekhab Electronics and Telecommunications Research Instit 2020 ETRI Journal Vol.42 No.3
In a wireless sensor network (WSN), the data transmission technique based on the cooperative multiple-input multiple-output (CMIMO) scheme reduces the energy consumption of sensor nodes quite effectively by utilizing the space-time block coding scheme. However, in networks with high node density, the scheme is ineffective due to the high degree of correlated data. Therefore, to enhance the energy efficiency in high node density WSNs, we implemented the distributed source coding (DSC) with the virtual multiple-input multiple-output (MIMO) data transmission technique in the WSNs. The DSC-MIMO first compresses redundant source data using the DSC and then sends it to a virtual MIMO link. The results reveal that, in the DSC-MIMO scheme, energy consumption is lower than that in the CMIMO technique; it is also lower in the DSC single-input single-output (SISO) scheme, compared to that in the SISO technique at various code rates, compression rates, and training overhead factors. The results also indicate that the energy consumption per bit is directly proportional to the velocity and training overhead factor in all the energy saving schemes.
Singh, Raushan Kumar,Tiwari, Manish Kumar,Singh, Ranjitha,Lee, Jung-Kul MDPI 2013 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.14 No.1
<P>Enzymes found in nature have been exploited in industry due to their inherent catalytic properties in complex chemical processes under mild experimental and environmental conditions. The desired industrial goal is often difficult to achieve using the native form of the enzyme. Recent developments in protein engineering have revolutionized the development of commercially available enzymes into better industrial catalysts. Protein engineering aims at modifying the sequence of a protein, and hence its structure, to create enzymes with improved functional properties such as stability, specific activity, inhibition by reaction products, and selectivity towards non-natural substrates. Soluble enzymes are often immobilized onto solid insoluble supports to be reused in continuous processes and to facilitate the economical recovery of the enzyme after the reaction without any significant loss to its biochemical properties. Immobilization confers considerable stability towards temperature variations and organic solvents. Multipoint and multisubunit covalent attachments of enzymes on appropriately functionalized supports via linkers provide rigidity to the immobilized enzyme structure, ultimately resulting in improved enzyme stability. Protein engineering and immobilization techniques are sequential and compatible approaches for the improvement of enzyme properties. The present review highlights and summarizes various studies that have aimed to improve the biochemical properties of industrially significant enzymes.</P>
Manish Srivastava,Jay Singh,Rajneesh K. Mishra,Manish K. Singh,Animesh K. Ojha,Madhu Yashpal,Srivastava Sudhanshu 한국물리학회 2014 Current Applied Physics Vol.14 No.7
A study on Lithium ferrite/chitosan nanocomposite (LFCN), easily moldable into arbitrary shapes, as the conducting polymer and ferromagnetic characteristics is presented. The composite material is produced in the presence of Li0.5Cr0.1Fe2.4O4 and Li0.5Co0.1Fe2.4O4 nanoparticle by ex-situ polymerizations process. Various characterizations techniques have been used to explore the characteristic of the synthesized products. The frequency dependent dielectric properties and electrical conductivity of all the samples have been measured through complex impedance plot in the frequency range of 1 kHze6 MHz at room temperature. It was observed that in case of (LFCN), fluctuation in value of (ε 0) and (ε 00) is ceased over the frequency range of 4 Mz which can be attributed to the steady storage and dissipation of energy in the nanocomposite system. Moreover, it is also observed that electrical conductivity of (LFCN) increases with frequency and its value was found to be (0.032e0.048) (ohm-cm)1 in frequency range of 1 kHze6 MHz. Due to its low cost, a simple synthesis process and high flexibility, the proposed LFCN may find applications in various types of electronic components.
Singh, Manish P.,Dhumal, Nilesh R.,Kim, Hyung J.,Kiefer, Johannes,Anderson, James A. American Chemical Society 2017 The Journal of Physical Chemistry Part C Vol.121 No.19
<P>Hybrid materials of ionic liquids (ILs) confined in metal organic frameworks (MOF) are promising materials for energy storage. The effects of exposing or treating such composite materials with molecular solvents, e.g., with the aim to extract and replace the IL, have not been studied to date. In this study, acetone, isopropanol, methanol, and water were used to remove the IL 1-ethyl-3-methylimidazolium ethyl sulfate confined in a Cu-based metal-organic framework (CuBTC). The consequences of the solvent extraction process were analyzed using vibrational spectroscopy (FTIR), powder X-ray diffraction (PXRD), N-2 adsorption, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Methanol was identified as the best solvent for IL removal as it shows high extraction efficiency without affecting the porous geometry and crystal structure of the MOF. On the other hand, acetone and isopropanol were not able to completely remove the IL from CuBTC under the conditions employed. Water effectively removed the IL, but it has a significant detrimental effect on the CuBTC structure. This impact manifests as changes in the infrared spectra and the PXRD patterns as well as in the electron micrographs. The degraded CuBTC exhibits a nonporous structure that presents itself as nonuniformly agglomerated microrods along with very few hexagonal/amorphous phases. The confinement of acetone, isopropanol, and methanol in the MOF was also investigated. The results show that CuBTC is stable in acetone, isopropanol, and methanol but unstable in water.</P>
Priyanka Singh,Aruna Nambirajan,Manish Kumar Gaur,Rahul Raj,Sunil Kumar,Prabhat Singh Malik,Deepali Jain 대한병리학회 2022 Journal of Pathology and Translational Medicine Vol.56 No.4
Epithelioid inflammatory myofibroblastic sarcoma (EIMS) is an aggressive subtype of inflammatory myofibroblastic tumor (IMT) harboring anaplastic lymphoma kinase (<i>ALK</i>) gene fusions and is associated with high risk of local recurrence and poor prognosis. Herein, we present a young, non-smoking male who presented with complaints of cough and dyspnoea and was found to harbor a large right lower lobe lung mass. Biopsy showed a high-grade epithelioid to rhabdoid tumor with ALK and desmin protein expression. The patient initially received 5 cycles of crizotinib and remained stable for 1 year; however, he then developed multiple bony metastases, for which complete surgical resection was performed. Histopathology confirmed the diagnosis of EIMS, with <i>ALK</i> gene rearrangement demonstrated by fluorescence in situ hybridization. Postoperatively, the patient is asymptomatic with stable metastatic disease on crizotinib and has been started on palliative radiotherapy. EIMS is a very rare subtype of IMT that needs to be included in the differential diagnosis of ALKexpressing lung malignancies in young adults.
Singh, Jitendra Pal,Ji, Mi-Jung,Kumar, Manish,Lee, Ik-Jae,Chae, Keun Hwa Elsevier 2018 JOURNAL OF ALLOYS AND COMPOUNDS Vol.748 No.-
<P><B>Abstract</B></P> <P>Present work investigates the nature of adsorbed species onto the surface of MgO thin films during prolonged annealing. The prolonged annealing (300 °C, 24 h) was performed on MgO thin films of different thicknesses ranging from 6.5 to 56.2 nm in order to exactly identify the related effect. Deposited films of different thicknesses exhibited local electronic structure very much analogues to the bulk MgO as investigated through near edge X-ray absorption fine structure measurements. These measurements further revealed that local electronic structure was significantly modified by prolonged annealing. It was contemplated that oxygen molecules were adsorbed on the surface of MgO thin films during prolonged annealing. Apart from this, onset of H<SUB>2</SUB>O adsorption was also identified using Fourier transform infrared spectroscopy.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Deposition of MgO thin films using radio-frequency sputtering method. </LI> <LI> Preferred (220) orientation of films were confirmed using X-ray diffraction. </LI> <LI> Near edge fine structure and FTIR measurements reveals oxygen and water adsorption on MgO thin films. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Singh, Jay,Roychoudhury, Appan,Srivastava, Manish,Chaudhary, Vidhi,Prasanna, Radha,Lee, Dong Won,Lee, Seung Hee,Malhotra, B. D. American Chemical Society 2013 JOURNAL OF PHYSICAL CHEMISTRY C - Vol.117 No.16
<P>A new hybrid nanocomposite based on hydrothermally synthesized nanostructured NiFe<SUB>2</SUB>O<SUB>4</SUB> (<I>n</I>-NiFe<SUB>2</SUB>O<SUB>4</SUB>) and chitosan (CH) has been explored for bienzyme (cholesterol esterase (ChEt) and cholesterol oxidase (ChOx)) immobilization for application as total cholesterol biosensor. Results of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), Raman spectroscopy (RS) and vibrating sample magnetometer (VSM) studies demonstrate that the ChEt–ChOx/<I>n</I>-NiFe<SUB>2</SUB>O<SUB>4</SUB>–CH composite film is successfully synthesized. The obtained ChEt–ChOx/<I>n</I>-NiFe<SUB>2</SUB>O<SUB>4</SUB>–CH nanocomposite film shows large specific area, high conductivity, good biocompatibility, fast redox properties and improved antimicrobial activity. The fabricated ChEt–ChOx/<I>n</I>-NiFe<SUB>2</SUB>O<SUB>4</SUB>–CH/ITO bioelectrode exhibits largely improved amperometric biosensing performance, i.e., good linearity (5–400 mg/dL), low detection limit (24.46 mg/dL cm<SUP>–2</SUP>), high sensitivity of 1.73 μA/(mg/dL cm<SUP>–2</SUP>), fast response time of 15s, reproducibility of more than 15 times, shelf life of about 90 days and low Michaelis–Menten constant (<I>K</I><SUB><I>m</I></SUB>) value as 7.05 mg/dL (0.1825 mM). Furthermore, this modified bioelectrode has been utilized for estimation of total cholesterol in human serum samples. This efficient strategy provides new insight into the design of novel flexible electrodes for a wide range of applications in biosensing, bioelectronics, and clinical applications.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2013/jpccck.2013.117.issue-16/jp312698g/production/images/medium/jp-2012-12698g_0009.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp312698g'>ACS Electronic Supporting Info</A></P>
Singh, Raushan Kumar,Tiwari, Manish Kumar,Kim, In-Won,Chen, Zhilei,Lee, Jung-Kul American Society for Microbiology 2012 Applied and environmental microbiology Vol.78 No.24
<B>ABSTRACT</B><P>Chaetomium globosumendo-1,4-β-xylanase (XylCg) is distinguished from other xylanases by its high turnover rate (1,860 s<SUP>−1</SUP>), the highest ever reported for fungal xylanases. One conserved amino acid, W48, in the substrate binding pocket of wild-type XylCg was identified as an important residue affecting XylCg's catalytic efficiency.</P>
Manish Dixit,Amit Singh Chauhan,Sanjay Silakari 보안공학연구지원센터 2015 International Journal of Bio-Science and Bio-Techn Vol.7 No.4
This paper presents a different approach by employing probabilistic neural network (PNN) with level set method for segmentation of intensity inhomogeneous magnetic resonance images (MRI). The input image is classified by PNN, and initialise the image with initial zero level set contours. A cascade approach is used in which after processing image by PNN, the output of PNN is fed into Level Set Method (LSM) Algorithm. The LSM is usedto perform the segmentation and to estimate bias field.