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  • 1
    Online Resource
    Online Resource
    IOP Publishing ; 2023
    In:  Journal of Physics: Conference Series Vol. 2426, No. 1 ( 2023-02-01), p. 012034-
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2426, No. 1 ( 2023-02-01), p. 012034-
    Abstract: Five selected Nd 2 O 3 doped phosphate glass compositions are synthesized using melt quench technique. The physical properties such as density (ρ) and molar volume (V m ) are experimentally measured. The density increases whereas molar volume decreases with addition of Nd 2 O 3 content. The radiation sensing properties for these rare earth (RE) element doped phosphate glass samples have been investigated. The photon attenuation and sensing parameters such as mass attenuation coefficient (μ m ), linear attenuation coefficient (μ L ), optimum thickness range ( x opt ), effective atomic number (Z eff ), and mean free path (mfp) values are computed over wide gamma-ray energy range 1keV -100 GeV within framework of WinXCom software tool. The photon sensing properties of these rare earth doped phosphate glasses vary significantly on account of neodymium oxide content and photon energy. The mean free path (mfp) values of glass samples are found to decrease while the mass attenuation coefficient values rise as Nd 2 O 3 concentration does.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 2166409-2
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  • 2
    Online Resource
    Online Resource
    IOP Publishing ; 2018
    In:  IOP Conference Series: Materials Science and Engineering Vol. 402 ( 2018-10-01), p. 012092-
    In: IOP Conference Series: Materials Science and Engineering, IOP Publishing, Vol. 402 ( 2018-10-01), p. 012092-
    Type of Medium: Online Resource
    ISSN: 1757-899X
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 2506501-4
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  • 3
    Online Resource
    Online Resource
    IOP Publishing ; 2020
    In:  IOP Conference Series: Materials Science and Engineering Vol. 912, No. 3 ( 2020-08-01), p. 032063-
    In: IOP Conference Series: Materials Science and Engineering, IOP Publishing, Vol. 912, No. 3 ( 2020-08-01), p. 032063-
    Abstract: The applications of light weight planar parallel robotic manipulators are increasing enormously because of their various desirable characteristics such as low weight, lower inertia, higher stiffness, energy efficiency etc. Higher accelerations and accuracies can be achieved using planar parallel manipulators (PPMs). Also, Shape Memory Alloy (SMA) based actuators are replacing huge and bulky actuators as SMA actuators provide higher work per unit mass as compared to other actuators and also undergoes silent actuation by simple actuation process. In the present study, three configurations (3PRP, PPR-2PRP and PRR-2PRP) of 3 degrees of freedom U-shaped base planar parallel robotic manipulator have been presented using SMA based smart actuators. The manipulator constitutes of one fixed base and one moving platform. The SMA spring acts as linear actuators mounted on the base which is connected to the end effector with the help of three limbs. A detailed experimental study was carried out to understand the workspace associated with each configuration. The movement of manipulators was investigated with the various combinations associated with the input SMA translation joints. And the study showed that the various configurations acquire different areas of workspace in the manipulator region. This study also shows the essence of SMA springs in PPMs for precise and accurate positioning of the end-effector and also its tracking ability for the development of future micro-motion stage. Note: P refers to Passive Prismatic Joint, R refers to Passive Revolute Joint and P refers to Active Prismatic Joint.
    Type of Medium: Online Resource
    ISSN: 1757-8981 , 1757-899X
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2506501-4
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  • 4
    Online Resource
    Online Resource
    IOP Publishing ; 2020
    In:  Journal of Physics: Condensed Matter Vol. 32, No. 31 ( 2020-07-22), p. 315701-
    In: Journal of Physics: Condensed Matter, IOP Publishing, Vol. 32, No. 31 ( 2020-07-22), p. 315701-
    Type of Medium: Online Resource
    ISSN: 0953-8984 , 1361-648X
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 1472968-4
    detail.hit.zdb_id: 228975-1
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  • 5
    Online Resource
    Online Resource
    IOP Publishing ; 2021
    In:  IOP Conference Series: Materials Science and Engineering Vol. 1145, No. 1 ( 2021-04-01), p. 012038-
    In: IOP Conference Series: Materials Science and Engineering, IOP Publishing, Vol. 1145, No. 1 ( 2021-04-01), p. 012038-
    Abstract: Friction and wear are the main reason for energy losses in the mechanical systems. AISI 4140 is commonly use as gear material and other important applications. In this study experiments were conducted to predict the effect of the sliding speed and load on the frictional and wear behavior of AISI 4140 steel under the HP ZFL 80W-90 using a pin on disc tribometer. The tests were carried out under different loads (40,60,80) N and (0.5,1,1.5) m/s sliding speeds for constant distance of 500m. The tribological characteristic of the material was observed at different sliding speed. Based on the results, the wear mechanism of the AISI 4140 under HP ZFL 80W-90 lubricant was predicted. Results depicted that at low sliding speed the COF coefficient of friction decreases with increase in load. At moderate sliding speed also same trend was observed, whereas at higher sliding speed the COF increases with the increase of load.
    Type of Medium: Online Resource
    ISSN: 1757-8981 , 1757-899X
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2506501-4
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  • 6
    Online Resource
    Online Resource
    IOP Publishing ; 2020
    In:  Journal of Physics: Conference Series Vol. 1455, No. 1 ( 2020-02-01), p. 012022-
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 1455, No. 1 ( 2020-02-01), p. 012022-
    Abstract: Saffman–Taylor (ST) instability is also called viscous fingering (VF). It arises when the low viscous fluid is invaded into the high viscous fluid ina Hele-Shaw cell (HSC).The application of VF pattern is in oil recovery, hydrology, filtration and tissue engineering. Mainly radial HSC and lifted HSC arrangements are installed for rich variety of VF pattern formation. But In this paper, we consider theoretical and experimental works related to VF in lifted HSC. In the lifted Hele-Shaw cell (HSC), a thin film of high viscous stationary fluid is sandwiched between two circular or rectangular transparent glass plates. One of the glass plates is stationary and other plate is moved linearly to maintaining the linearity between the plates. Due to this action surrounding air (less viscous fluid) enters into the cellthrough the periphery and penetrates inside the high viscous fluid. After that, air fingers appear at the interface of fluids in the cell.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2166409-2
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  • 7
    Online Resource
    Online Resource
    IOP Publishing ; 2017
    In:  Japanese Journal of Applied Physics Vol. 56, No. 4S ( 2017-04-01), p. 04CD09-
    In: Japanese Journal of Applied Physics, IOP Publishing, Vol. 56, No. 4S ( 2017-04-01), p. 04CD09-
    Type of Medium: Online Resource
    ISSN: 0021-4922 , 1347-4065
    RVK:
    RVK:
    RVK:
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2017
    detail.hit.zdb_id: 218223-3
    detail.hit.zdb_id: 797294-5
    detail.hit.zdb_id: 2006801-3
    detail.hit.zdb_id: 797295-7
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  • 8
    In: Flexible and Printed Electronics, IOP Publishing, Vol. 7, No. 3 ( 2022-09-01), p. 035014-
    Abstract: Herein, two donor–acceptor conjugated polymers based on dithieno[3,2- b :2′,3′- d ]thiophene (DTT) and thiophene-flanked diketopyrrolopyrrole (DPP) or furan-flanked DPP, namely PDPPT-DTT and PDPPF-DTT were synthesised, characterised and evaluated for their electrical performance in transistor devices for comparison. The influence of the heteroatoms (thiophene and furan) flanked DPP on their thermal, optical, electronic structure and charge carrier transport properties were investigated. The absorption spectra of polymer PDPPT-DTT are broader and red-shifted (26–30 nm) compared with that of polymer PDPPF-DTT, indicating the resonance energy of thiophene is greater than furan, which may allow for different electron localization and result in the difference of optical properties. In addition, energy levels of polymers were slightly affected by the aromatic remote end-groups (thiophene to furan) in DPP-based molecule. Hole transport properties of copolymers were investigated by fabricating the field-effect transistors in the bottom gate top contact (BGTC) configurations for three different self-assembled monolayers (SAMs)/gate dielectric interfaces and different annealing temperatures of polymeric active layer. The BGTC organic thin film transistor (OFET) devices having PDPPT-DTT and PDPPF-DTT thin film annealed at 200 °C exhibit the hole mobility of 0.18 and 0.20 cm 2 V −1 s −1 , respectively. The OFET devices with trichloro(octyl)silane SAM, fabricated and characterized in ambient environment (temperature ∼25 °C, humidity ∼50%), were found to retain 90% of their performance up to 1000 h.
    Type of Medium: Online Resource
    ISSN: 2058-8585
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2844959-9
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  • 9
    Online Resource
    Online Resource
    IOP Publishing ; 2021
    In:  Physica Scripta Vol. 96, No. 12 ( 2021-12-01), p. 124060-
    In: Physica Scripta, IOP Publishing, Vol. 96, No. 12 ( 2021-12-01), p. 124060-
    Abstract: In this study, we have made an effort to reveal some information about the space-time evolution of quark gluon plasma (QGP). We deal with one of the important signature of quark gluon plasma from the analysis of the experimental results on electromagnetic probes which are measured at relativistic heavy-ion collider (RHIC) and large hadron collider (LHC). Electromagnetic radiations as diphotons emitted from hot and dense matter are investigated using a phenomenological model with quasiparticle approach at temperatures above critical temperature. In this, we use thermodynamically consistent quasiparticle model composed of quarks and gluons. Due to interactions among the quarks, mass of these particles is generated in highly dense and hot matter of QGP. The mass of these particles is temperature dependent and it is found that the model works well at temperatures above the critical temperature. Thus, this work is carried out using a phenomenological model in heavy-ion collisions in the limit of high temperature and zero chemical potential. The rate of diphoton production is calculated by suitably fitted parametrization factors in quark mass. We found an appreciable enhancement using thermal quark mass as compared to dynamical quark mass in the current results of two photon production rate. The results are compared with earlier estimated diphoton production rates from QGP and hadronic matter. Our results are therefore enhanced in comparison to the other theoretical results. The estimation of diphoton emission anticipates useful insights in the relevant range of mass. So these insights on diphotons can be advantageous tool for spectroscopy and thermometry in high energy heavy-ion collisions at RHIC and LHC.
    Type of Medium: Online Resource
    ISSN: 0031-8949 , 1402-4896
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 1477351-X
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  • 10
    Online Resource
    Online Resource
    IOP Publishing ; 2022
    In:  IOP Conference Series: Earth and Environmental Science Vol. 1032, No. 1 ( 2022-06-01), p. 012017-
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 1032, No. 1 ( 2022-06-01), p. 012017-
    Abstract: Rice is amongst the majorly cultivated crops in India and its leaf diseases can have a substantial impact on output and quality. The most important component is identifying rice leaf diseases, which have a direct impact on the economy and food security. Brown spot, Leaf Blast, Hispa are the most frequently occurring rice leaf diseases. To resolve this issue, we have studied various machine learning and deep learning approaches for detecting the diseases on their leaves by calculating their accuracy, recall, and precision to measure the performance. This study helps the farmers by detecting the diseases in rice leaves in order to get a healthy crop yield. The deep learning models perform well when compared with the machine learning methods. After analyzing all of the deep learning models, we found that the 5-layer convolution model had the best accuracy of 78.2 %, while others, such as VGG16, had a lower accuracy of 58.4%.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2434538-6
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