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Dubey Anil Kumar,Singh Sudhir 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4
Puparia of Pealius kufriensis Dubey sp. nov. found infesting a native and highly invasive plant, Rubus ellipticus Sm. (Rosaceae) are described. The host shrub was found highly infested with the new whitefly on the underside of leaves. Puparial characteristics of the genus Pealius Quaintance and Baker shared with Aleyrodes Latreille and Bemisia Quaintance and Baker are discussed.
Smart Phone Applications as a Source of Information on Stroke
Divyanshu Dubey,Amod Amritphale,Anshudha Sawhney,Nupur Amritphale,Pradeep Dubey,Ambarish Pandey 대한뇌졸중학회 2014 Journal of stroke Vol.16 No.2
Background and Purpose: Smartphone applications have been increasingly identified as a novel platform for dissemination of healthcare related information. However, there have been no studies done to evaluate the availability and content of stroke related apps. Purpose: This study aims to identify and analyze stroke-related applications available on the Apple iTunes and Android Google Play Store. Methods: The Apple iTunes store and Android Google Play Store were searched for stroke-related applications on July 27, 2013 using keywords: stroke, brain attack, intracranial hem-orrhage, subarachnoid hemorrhage, cerebral infarction. The content of the applications was analyzed by two independent investigators. Results: A total of 93 relevant applications (46.2% android and 53.8% iPhone) were identified of which 47.3% were available free of cost. 92% of apps were identified as useful by users and over 60% had scientifically valid information. There is a significant participation of healthcare agencies in dissemination of stroke related information through apps with 47.3% apps being uploaded by them. Over half of all stroke related apps were aimed towards health care workers (51.6%), 75% of which could be utilized as bedside tools for patient care and remainder had information related to recent research advances. The difference in scientific validity between the apps aimed at general population versus healthcare professionals was statistically significant (P<0.01). There was no statistical association between cost of app and scientific validity or usefulness. Conclusions: Smartphone apps are a significant source of information related to stroke. An increasing participation of healthcare agencies should be encouraged to promote dissemination of scientifically valid information.
Low energy ultrasonic single beacon localization for testing of scaled model vehicle
Dubey, Awanish C.,Subramanian, V. Anantha,Kumar, V. Jagadeesh Techno-Press 2019 Ocean systems engineering Vol.9 No.4
Tracking the location (position) of a surface or underwater marine vehicle is important as part of guidance and navigation. While the Global Positioning System (GPS) works well in an open sea environment but its use is limited whenever testing scaled-down models of such vehicles in the laboratory environment. This paper presents the design, development and implementation of a low energy ultrasonic augmented single beacon-based localization technique suitable for such requirements. The strategy consists of applying Extended Kalman Filter (EKF) to achieve location tracking from basic dynamic distance measurements of the moving model from a fixed beacon, while on-board motion sensor measures heading angle and velocity. Iterative application of the Extended Kalman Filter yields x and y co-ordinate positions of the moving model. Tests performed on a free-running ship model in a wave basin facility of dimension 30 m by 30 m by 3 m water depth validate the proposed model. The test results show quick convergence with an error of few centimeters in the estimated position of the ship model. The proposed technique has application in the real field scenario by replacing the ultrasonic sensor with industrial grade long range acoustic modem. As compared with the existing systems such as LBL, SBL, USBL and others localization techniques, the proposed technique can save deployment cost and also cut the cost on number of acoustic modems involved.
Self-Localized Packet Forwarding in Wireless Sensor Networks
Dubey, Tarun,Sahu, O.P. Korea Information Processing Society 2013 Journal of information processing systems Vol.9 No.3
Wireless Sensor Networks (WSNs) are comprised of sensor nodes that forward data in the shape of packets inside a network. Proficient packet forwarding is a prerequisite in sensor networks since many tasks in the network, together with redundancy evaluation and localization, depend upon the methods of packet forwarding. With the motivation to develop a fault tolerant packet forwarding scheme a Self-Localized Packet Forwarding Algorithm (SLPFA) to control redundancy in WSNs is proposed in this paper. The proposed algorithm infuses the aspects of the gossip protocol for forwarding packets and the end to end performance of the proposed algorithm is evaluated for different values of node densities in the same deployment area by means of simulations.
Dubey, Saurabh,Maiti, Biswajit,Kim, Sung-Hyun,Sivadasan, Sangeetha Madambithara,Kannimuthu, Dhamotharan,Pandey, Pramod Kumar,Girisha, Shivani Kallappa,Mutoloki, Stephen,Chen, Shih-Chu,Evensen, Øystein Blackwell Scientific Publications 2019 Journal of fish diseases Vol.42 No.6
<P> The genus <I>Edwardsiella</I> is one of the major causes of fish diseases globally. Herein, we examined 37 isolates from ten different fish species from India, South Korea and Taiwan to gain insight into their phenotypic and genotypic properties, of which 30 were characterized as <I>E. tarda</I> with phenotypic homology estimated at 85.71% based on API-20E biochemical tests. Genotyping using 16S rRNA put all isolates together with <I>E. anguillarum, E. hoshinae, E. tarda, E. piscicida and E. ictaluri</I> reference strains in a monophyletic group. In contrast, the gyrB phylogenetic tree clearly separated <I>E. ictaluri, E. tarda and E. hoshinae</I> reference strains from our isolates and put our isolates into two groups with group I being homologous with the <I>E. anguillarum</I> reference strain while group II was homologous with the <I>E. piscicida</I> reference strain. Hence, our findings point to <I>E. piscicida</I> and <I>E. anguillarum</I> as species infecting different fish species in Asia. Homology of the ompW protein suggested that strains with broad protective coverage could be identified as vaccine candidates. This study underscores the importance of combining genotyping with phenotyping for valid species classification. In addition, it accentuates the importance of phylogenetic comparison of bacterial antigens for identification of potential vaccine candidates. </P>
Dubey, Prashant,Choi, Sang Kyu,Choi, Ji Hoon,Shin, Dong Hoon,Lee, Cheol Jin American Scientific Publishers 2010 Journal of Nanoscience and Nanotechnology Vol.10 No.6
<P>We synthesized thin-multiwalled carbon nanotubes (t-MWCNTs) using Fe-Mo/MgO catalyst by citrate precursor method based on a simple sol-gel technique. Synthesis of high-quality t-MWCNTs with uniform diameters was achieved in large-scale by catalytic decomposition of methane over Fe-Mo/MgO catalyst prepared under Ar-atmosphere. The produced t-MWCNTs had the outer diameters in the range of 4-8 nm, with a Gaussian average diameter of 6.6 +/- 0.1 nm and wall numbers in the range of of 4-7 graphenes. The product yield of the as-synthesized t-MWCNTs was over 450% relative to the used Fe-Mo/MgO catalyst, and TGA showed purity about 85%. The t-MWCNTs showed the low turn-on field about 1.24 V/microm, corresponding to the current density of 0.1 microA/cm2, and the high emission Current density of 10 mA/cm2 at the applied electric field of 2.6 V/microm. The t-MWCNTs indicate good emission stability without any fluctuation of emission current through a lifetime measurement for 20 h. It was confirmed that the field emission performance of t-MWCNTs was similar to DWCNTs and the field emission stability of t-MWCNTs was similar to MWCNTs.</P>
Dubey, Rashmi,Tewari, Ashish K.,Ravikumar, K.,Sridhar, B. Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.5
Evidences have proved the versatile role of sulfur atom in supramolecular chemistry. $^1$Presence of S atom in the molecule usually results in the specific structural properties of molecules. In the present study, $S{\cdots}arene$, $N{\cdots}arene$, $CH{\cdots}{\pi}$, $CH{\cdots}S$ and $CH{\cdots}N$ type of weak interactions stabilize the conformation and self assembly of symmetrical as well as dissymmetrical molecules.
Raspberry derived mesoporous carbon-tubules and fixed-bed adsorption of pharmaceutical drugs
Dubey, S.P.,Dwivedi, A.D.,Lee, C.,Kwon, Y.N.,Sillanpaa, M.,Ma, L.Q. Korean Society of Industrial and Engineering Chemi 2014 Journal of industrial and engineering chemistry Vol.20 No.3
Novel mesoporous carbon-tubules were prepared from wild plant leaves of Rubus idaeus (Raspberry) and their physicochemical characteristics were analyzed by spectroscopic and potentiometric titration methods. The developed carbon-tubules were applied for the aqueous phase decontamination of three pharmaceutical drugs. Ibuprofen, naproxen and clofibric acid were selected for the study. Batch and fixed-bed studies were performed to investigate the adsorption of selected pharmaceutical drugs. Mathematical modelings were applied to the experimental data in order to estimate the maximum adsorption capacity and evaluate the characteristics of the fixed-bed. Based on finding, the adsorption mechanism was investigated by adsorbate and adsorbent physicochemical characteristics.
Dubey Anil Kumar,Mishra Urmila,Lim Won Hee 경남대학교 수학교육과 2019 Nonlinear Functional Analysis and Applications Vol.24 No.3
In this paper, we present some fixed point theorems for generalized contractions involving rational expressions in the framework of complex valued $b$-metric spaces. Our results generalize some existing results.