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Author: Grafiati
Published: 9 March 2023

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1

Senstius, Mads Givskov, Simon James Freethy, and Stefan Kragh Nielsen. "Nonlinear degradation of O-X-B mode conversion in MAST Upgrade." EPJ Web of Conferences 277 (2023): 01009. http://dx.doi.org/10.1051/epjconf/202327701009.

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Spherical tokamaks like the MAST Upgrade device are often operated in an overdense regime. As a consequence, conventional electron cyclotron resonance heating (ECRH) and current drive (ECCD) are typically not possible. MAST Upgrade is planned to investigate a mode coupling scheme known as O-X-B at high power, which may allow gyrotrons to heat and drive current in overdense plasmas by coupling electromagnetic waves to electrostatic electron Bernstein waves (EBWs) at the upper hybrid (UH) layer. However at the gyrotron beam intensities planned for MAST Upgrade, several nonlinear effects may degrade the linear mode coupling into EBWs. Using particle-in-cell simulations, parametric decay instabilities (PDIs) and stochastic electron heating (SEH) are investigated in the region near the UH layer. It is found that nonlinear effect could have a substantial impact on the O-X-B scheme in MAST Upgrade at high gyrotron intensities.
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2

Arefiev, A. V., I. Y. Dodin, A. Köhn, E. J. Du Toit, E. Holzhauer, V. F. Shevchenko, and R. G. L. Vann. "Kinetic simulations of X-B and O-X-B mode conversion and its deterioration at high input power." Nuclear Fusion 57, no. 11 (August 9, 2017): 116024. http://dx.doi.org/10.1088/1741-4326/aa7e43.

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3

Bin, W., A. Bruschi, O. D'Arcangelo, C. Galperti, G. Granucci, A. Moro, S. Nowak, and G. Pucella. "Feasibility study of O–X coupling for overdense plasma heating through O–X–B mode conversion in FTU." Nuclear Fusion 53, no. 8 (July 16, 2013): 083020. http://dx.doi.org/10.1088/0029-5515/53/8/083020.

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4

Kohn, A., E. Holzhauer, and U. Stroth. "Visualization of the O-X-B Mode Conversion Process With a Full-Wave Code." IEEE Transactions on Plasma Science 36, no. 4 (August 2008): 1220–21. http://dx.doi.org/10.1109/tps.2008.924265.

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5

Hansen, F. R., J. P. Lynov, and P. Michelsen. "The O-X-B mode conversion scheme for ECRH of a high-density Tokamak plasma." Plasma Physics and Controlled Fusion 27, no. 10 (October 1, 1985): 1077–100. http://dx.doi.org/10.1088/0741-3335/27/10/002.

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6

Igami, H., S. Kubo, H. P. Laqua, K. Nagasaki, S. Inagaki, T. Notake, T. Shimozuma, Y. Yoshimura, T. Mutoh, and LHD Experimental Group. "Searching for O-X-B mode-conversion window with monitoring of stray microwave radiation in LHD." Review of Scientific Instruments 77, no. 10 (October 2006): 10E931. http://dx.doi.org/10.1063/1.2336460.

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7

Köhn, A., Á. Cappa, E. Holzhauer, F. Castejón, Á. Fernández, and U. Stroth. "Full-wave calculation of the O–X–B mode conversion of Gaussian beams in a cylindrical plasma." Plasma Physics and Controlled Fusion 50, no. 8 (June 27, 2008): 085018. http://dx.doi.org/10.1088/0741-3335/50/8/085018.

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8

Pochelon, A., A. Mueck, L. Curchod, Y. Camenen, S. Coda, B. P. Duval, T. P. Goodman, et al. "Electron Bernstein wave heating of over-dense H-mode plasmas in the TCV tokamak via O-X-B double mode conversion." Nuclear Fusion 47, no. 11 (October 19, 2007): 1552–58. http://dx.doi.org/10.1088/0029-5515/47/11/017.

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9

Shevchenko, V. F. "ECE measurements via B-X-O mode conversion: A proposal to diagnose the q profile in spherical tokamaks." Plasma Physics Reports 26, no. 12 (December 2000): 1000–1004. http://dx.doi.org/10.1134/1.1331135.

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10

Bilato, R., F. Volpe, A. Köhn, R. Paccagnella, D. Farina, E. Poli, and M. Brambilla. "Feasibility of electron Bernstein wave coupling via O-X-B mode conversion in the RFX-mod reversed field pinch device." Nuclear Fusion 49, no. 7 (June 10, 2009): 075020. http://dx.doi.org/10.1088/0029-5515/49/7/075020.

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11

Biewer, T. M., C. Lau, T. S. Bigelow, J. F. Caneses, J. B. O. Caughman, R. H. Goulding, N. Kafle, M. C. Kaufman, and J. Rapp. "Utilization of O-X-B mode conversion of 28 GHz microwaves to heat core electrons in the upgraded Proto-MPEX." Physics of Plasmas 26, no. 5 (May 2019): 053508. http://dx.doi.org/10.1063/1.5093321.

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12

Kohn, Alf, Roberto Bilato, Francesco Volpe, and Roberto Paccagnella. "Full-Wave Simulations of the O–X–B Mode Conversion in a Realistic Experimental Geometry in the RFX-mod Device." IEEE Transactions on Plasma Science 39, no. 11 (November 2011): 3016–17. http://dx.doi.org/10.1109/tps.2011.2155680.

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13

Nakajima, S., and H. Abe. "Particle simulation of the OXB mode conversion and overdense plasma heating in the electron cyclotron range of frequencies." Physics Letters A 124, no. 4-5 (September 1987): 295–98. http://dx.doi.org/10.1016/0375-9601(87)90641-4.

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14

Guo, Xingyu, Ryo Ashida, Yuto Noguchi, Ryusuke Kajita, Hitoshi Tanaka, Masaki Uchida, and Takashi Maekawa. "Direct measurement of electron Bernstein waves in Low Aspect ratio Torus Experiment (LATE)." Plasma Physics and Controlled Fusion 64, no. 3 (January 26, 2022): 035008. http://dx.doi.org/10.1088/1361-6587/ac4522.

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Abstract By using a newly developed five-pin probe antenna and two-dimensional mechanical probe driving system, the 2D wave pattern of phase and amplitude has been directly measured in the Low Aspect ratio Torus Experiment (LATE) device, for an overdense ECR plasma with microwave obliquely injected. In the case of O-mode injection, an electron Bernstein wave (EBW)-like wave pattern has been detected for the first time, in a localized region near the upper hybrid resonance layer. The pattern has a short wavelength of about 2 mm and is also electrostatic and backward. In the case of X-mode injection, the 2D wave pattern is quite different and no EBW signal can be observed. By adjusting the toroidal magnetic field in O-mode injection, it is found that both the position and size of the EBW region have changed, which suggests the localized condition of efficient O-X-B conversion and high collisional damping rate of EBWs in these experiments.
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15

Laqua, H. P., V. Erckmann, H. J. Hartfuß, and H. Laqua. "Resonant and Nonresonant Electron Cyclotron Heating at Densities above the Plasma Cutoff by O-X-B Mode Conversion at the W7-As Stellarator." Physical Review Letters 78, no. 18 (May 1997): 3467–70. http://dx.doi.org/10.1103/physrevlett.78.3467.

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16

Marin, J. F. Caneses, C. L. Lau, R. H. Goulding, T. Bigelow, T. M. Biewer, J. B. O. Caughman, and J. Rapp. "Power transport efficiency during O-X-B 2nd harmonic electron cyclotron heating in a helicon linear plasma device 1." Plasma Physics and Controlled Fusion 64, no. 2 (December 31, 2021): 025005. http://dx.doi.org/10.1088/1361-6587/ac4525.

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Abstract The principal objective of this work is to report on the power coupled to a tungsten target in the prototype-material plasma exposure experiment device during oblique injection of a microwave beam (<70 kW at 28 GHz) into a high-power (∼100 kW at 13.56 MHz) over-dense ( 1 \times {10^{19}}{\text{ }}{{\text{m}}^{ - 3}}$?> n e > 1 × 10 19 m − 3 ) deuterium helicon plasma column. The experimental setup, electron heating system, electron heating scheme, and IR thermographic diagnostic for quantifying the power transport is described in detail. It is demonstrated that the power transported to the target can be effectively controlled by adjusting the magnetic field profile. Using this method, heat fluxes up to 22 MW m−2 and power transport efficiencies in the range of 17%–20% have been achieved using 70 kW of microwave power. It is observed that most of the heat flux is confined to a narrow region at the plasma periphery. Ray-tracing calculations are presented which indicate that the power is coupled to the plasma electrons via an O-X-B mode conversion process. Calculations indicate that the microwave power is absorbed in a single pass at the plasma periphery via collisions and in the over-dense region via 2nd harmonic cyclotron resonance of the electron Bernstein wave. The impact of these results is discussed in the context of MPEX.
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17

Cimek, Jarosław, Xavier Forestier, Ryszard Stepien, Mariusz Klimczak, and Ryszard Buczynski. "Synthesis conditions of ZBLAN glass for mid-infrared optical components." Photonics Letters of Poland 10, no. 1 (March 31, 2018): 8. http://dx.doi.org/10.4302/plp.v10i1.804.

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We report on successful synthesis of ZBLAN glass. Different purity of zirconium tetrafluoride used for synthesis and fluorinating agents were analyzed to obtain high optical quality glass. Among fluorinating agents we used ammonium bifluoride, xenon difluoride and sulfur hexafluoride. The best results in form of synthetized glasses have transmission window extending from 0.2 to 8.0 um, which allows to fabricate fibers for mid-infrared applications. Full Text: PDF ReferencesR. Stępień, J. Cimek, D. Pysz, I. Kujawa, M. Klimczak, and R. Buczyński, Soft glasses for photonic crystal fibers and microstructured optical components, Opt. Eng. 53, 071815 (2014). CrossRef D. Pysz, I. Kujawa, R. Stępień, M. Klimczak, A. Filipkowski, M. Franczyk, L. Kociszewski, J. Buźniak, K. Haraśny, R. Buczyński, Stack and draw fabrication of soft glass microstructured fiber optics, Bull. Pol. Acad. Sci.-Tech. Sci., 62(4), 667-683 (2014). CrossRef R. Kasztelanic, I. Kujawa, R. Stępień, K. Haraśny, D. Pysz and R. Buczyński, Molding of soft glass refraction mini lens with hot embossing process for broadband infrared transmission systems, Infrared Phys. Technol. 61, 299-305 (2013). CrossRef Moynihan C.T. (1987) Crystallization Behavior of Fluorozirconate Glasses. In: Almeida R.M. (eds) Halide Glasses for Infrared Fiberoptics. NATO ASI Series (Series E: Applied Sciences), 123, Springer, Dordrecht. CrossRef M. R. Majewski, R. I. Woodward, S. D. Jackson, Dysprosium-doped ZBLAN fiber laser tunable from 2.8?m to 3.4?m, pumped at 1.7?m, Opt. Lett. 43, 971-974 (2018). CrossRef G Bharathan, R. I. Woodward, M. Ams, D. D. Hudson, S. D. Jackson, A. Fuerbach, Direct inscription of Bragg gratings into coated fluoride fibers for widely tunable and robust mid-infrared lasers, Opt. Express 25, 30013-30019 (2017). CrossRef Y. Shen, Y. Wang, H. Chen, K. Luan, M. Tao, J. Si, Wavelength-tunable passively mode-locked mid-infrared Er3+-doped ZBLAN fiber laser, Sci. Rep. 7, 14913 (2017). CrossRef J. Méndez-Ramos, P. Acosta-Mora, J. C. Ruiz-Morales, T. Hernández, M. E. Borges, P. Esparza, Heavy rare-earth-doped ZBLAN glasses for UV?blue up-conversion and white light generation, J. Lumin. 143, 479-483 (2013). CrossRef X. Jiang, N. Y. Joly, M. A. Finger, F. Babic, G. K. L. Wong, J. C. Travers, P. St. J. Russell, Deep-ultraviolet to mid-infrared supercontinuum generated in solid-core ZBLAN photonic crystal fibre, Nat. Photonics 9, 133?139 (2015). CrossRef X. Jiang, N. Y. Joly, M. A. Finger, F. Babic, M. Pang, R. Sopalla, M. H. Frosz, S. Poulain, M. Poulain, V. Cardin, J. C. Travers, P. St. J. Russell, Supercontinuum generation in ZBLAN glass photonic crystal fiber with six nanobore cores, Opt. Lett. 41, 4245-4248 (2016). CrossRef A. Medjouri, E. B. Meraghni, H. Hathroubi, D. Abed, L. M. Simohamed, O. Ziane, Design of ZBLAN photonic crystal fiber with nearly zero ultra-flattened chromatic dispersion for supercontinuum generation, Optik 135, 417?425 (2017). CrossRef D. C. Tee, N. Tamchek, C. H. Raymond Ooi, Numerical Modeling of the Fundamental Characteristics of ZBLAN Photonic Crystal Fiber for Communication in 2?3 ?m Midinfrared Region, IEEE Photon. J. 8, 4500713 (2016) . CrossRef Y. Dai, K. Takahashi, I. Yamaguchi, Thermal oxidation of fluorozirconate glass and fibres, J. Mater. Sci. Lett. 12, 1648?1651 (1993). CrossRef P. Hlubina, White-light spectral interferometry with the uncompensated Michelson interferometer and the group refractive index dispersion in fused silica, Opt. Commun. 193, 1-7 (2001). CrossRef F. Gan, Optical properties of fluoride glasses: a review, J. Non Cryst. Sol. 184, 9-20 (1995). CrossRef A. Filipkowski, B. Piechal, D. Pysz, R. Stepien, A. Waddie, M. R. Taghizadeh, and R. Buczynski, Nanostructured gradient index micro axicons made by a modified stack and draw method, Opt. Lett. 40, 5200-5203 (2015). CrossRef R. Kasztelanic, A. Filipkowski, D. Pysz, R. Stepień, A. J. Waddie, M. R. Taghizadeh, and R. Buczynski, High resolution Shack-Hartmann sensor based on array of nanostructured GRIN lenses, Opt. Express 25, 1680-1691 (2017). CrossRef
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18

Lindner, Ekkehard, Uwe Schober, Erhard Glaser, Hubert Norz, and Peter Wegner. "Neuartige basische Liganden für die homogenkatalytische Methanolcarbonylierung, XI [1]. Ether-Phosphan-Cobalt-Komplexe in der katalytischen Methanolhydrocarbonylierung zu Acetaldehyd / Novel Basic Ligands for the H om ogeneous Catalytic Methanol Carbonylation, XI [1]. Ether Phosphane Cobalt Complexes in the Catalytic Hydrocarbonylation of Methanol to Acetaldehyde." Zeitschrift für Naturforschung B 42, no. 12 (December 1, 1987): 1527–36. http://dx.doi.org/10.1515/znb-1987-1207.

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AbstractPhP(CH2C4H7O2)2 (1) and [-CH2(Ph)P~D]2 (3a-c) [D = CH2C4H702 (a), CH2C4H7O (b). CH2CH2OCH3 (c)] are obtained by reaction of Li2PPh and Na(Ph)P~D with ClCH2C4H7O2 and C1CH2CH2Cl, respectively. 1 and 3a, b give rise to high selectivities and conversions in the cobalt catalyzed hydrocarbonylation of methanol to acetaldehyde. Model complexes of cobalt which are of importance in the catalytic cycle are synthesized. Complexes of the type X2Co(Ph2P~D)2 (6az, 6bx-bz, 6cx-cz), especially those with X = I, obtained from CoX2 [X = Cl (x), Br (y), I (z)] and the ether phosphanes Ph2P~D (5a-c), are regarded as precursors of the catalytically active species. With K[HB(sec-C4H9)3] they are reduced to the cobalt(I) complexes XCo(Ph2P~D)(Ph2P~D) (7az, 7bx-bz, 7cx-cz). Trapping reactions with CO, PPh3 or 5b, c lead to the compounds XCo(CO)2(Ph2P~D)2 (8az, 8bx-bz, 8cx-cz), XCoPPh3(Ph2P~D)2 (9bx-bz). and XCo(Ph2P~D)3 (10bz, cz), respectively, with cleavage of a Co-O bond. The reduction of X2Co(PPh3)2 (11x, z) with K[HB(sec-C4H9)3] represents a simple method for the preparation of the complexes XCo(CO)2(PPh3)2 (13x, z) which are formed from the intermediates XCo(PPh3)2 · THF (12x, z) in the presence of CO.
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19

Deng, He Lian, and You Gang Xiao. "Development of General Embedded Intelligent Monitoring System for Tower Crane." Applied Mechanics and Materials 103 (September 2011): 394–98. http://dx.doi.org/10.4028/www.scientific.net/amm.103.394.

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For improving the generality, expandability and accuracy, the general embedded intelligent monitoring system of tower crane is developed. The system can be applied to different kinds of tower cranes running at any lifting ratio, can be initialized using U disk with the information of tower crane, and fit the lifting torque curve automatically. In dangerous state, the system can sent out alarm signals with sounds and lights, and cut off power by sending signals to PLC through communication interface RS485. When electricity goes off suddenly, the system can record the real-time operating information automatically, and store them in a black box, which can be taken as the basis for confirming the accident responsibility.In recent years, tower cranes play a more and more important role in the construction of tall buildings, in other construction fields are also more widely used. For the safety of tower cranes, various monitors have been developed for monitoring the running information of crane tower [1-8]. These monitors can’t eliminate the errors caused by temperature variations automatically. The specific tower crane’s parameters such as geometric parameters, alarming parameters, lifting ratio, lifting torque should be embedded into the core program, so a monitor can only be applied to a specific type of tower crane, lack of generality and expansibility.For improving the defects of the existing monitors, a general intelligent monitoring modular system of tower crane with high precision is developed, which can initialize the system automatically, eliminate the temperature drift and creep effect of sensor, and store power-off data, which is the function of black box.Hardware design of the monitoring systemThe system uses modularized design mode. These modules include embedded motherboard module, sensor module, signal processing module, data acquisition module, power module, output control module, display and touch screen module. The hardware structure is shown in figure 1. Figure 1 Hardware structure of the monitoring systemEmbedded motherboard module is the core of the system. The motherboard uses the embedded microprocessor ARM 9 as MCU, onboard SDRAM and NAND Flash. Memory size can be chosen according to users’ needs. SDRAM is used for running procedure and cache data. NAND Flash is used to store embedded Linux operating system, applications and operating data of tower crane. Onboard clock with rechargeable batteries provides the information of year, month, day, hour, minute and second. This module provides time tag for real-time operating data. Most interfaces are taken out by the plugs on the embedded motherboard. They include I/O interface, RS232 interface, RS485 interface, USB interface, LCD interface, Audio interface, Touch Screen interface. Pull and plug structure is used between all interfaces and peripheral equipments, which not only makes the system to be aseismatic, but also makes its configuration flexible. Watch-dog circuit is designed on the embedded motherboard, which makes the system reset to normal state automatically after its crash because of interference, program fleet, or getting stuck in an infinite loop, so the system stability is improved greatly. In order to store operating data when power is down suddenly, the power-down protection circuit is designed. The saved data will be helpful to repeat the accident process later, confirm the accident responsibility, and provide the basis for structure optimization of tower crane.Sensor module is confirmed by the main parameters related to tower crane’s security, such as lifting weight, lifting torque, trolley luffing, lifting height, rotary angle and wind speed. Axle pin shear load cell is chosen to acquire lifting weight signals. Potentiometer accompanied with multi-stopper or incremental encoder is chosen to acquire trolley luffing and lifting height signals. Potentiometer accompanied with multi-stopper or absolute photoelectric encoder is chosen to acquire rotary angle signals. Photoelectric sensor is chosen to acquire wind speed signals. The output signals of these sensors can be 0~5V or 4~20mA analog signals, or digital signal from RS485 bus. The system can choose corresponding signal processing method according to the type of sensor signal, which increases the flexibility on the selection of sensors, and is helpful for the users to expand monitoring objects. If the acquired signal is analog signal, it will be processed with filtering, isolation, anti-interference processing by signal isolate module, and sent to A/D module for converting into digital signals, then transformed into RS485 signal by the communication protocol conversion device according to Modbus protocol. If the acquired signal is digital signal with RS485 interface, it can be linked to RS485 bus directly. All the acquired signals are sent to embedded motherboard for data processing through RS485 bus.The data acquisition module is linked to the data acquisition control module on embedded motherboard through RS485 interface. Under the control of program, the system inquires the sensors at regular intervals, and acquires the operating data of crane tower. Median filter technology is used to eliminate interferences from singularity signals. After analysis and processing, the data are stored in the database on ARM platform.Switch signal can be output to relay module or PLC from output control module through RS485 bus, then each actuator will be power on or power off according to demand, so the motion of tower crane will be under control.Video module is connected with motherboard through TFT interface. After being processed, real-time operating parameters are displayed on LCD. The working time, work cycle times, alarm, overweight and ultar-torque information will be stored into database automatically. For meeting the needs of different users, the video module is compatible with 5.7, 8.4 or 10.4 inches of color display.Touch screen is connected with embedded motherboard by touch screen interface, so human machine interaction is realized. Initialization, data download, alarm information inquire, parameter modification can be finished through touch screen.Speaker is linked with audio interface, thus alarm signals is human voice signal, not harsh buzz.USB interface can be linked to conventional U disk directly. Using U disk, users can upload basic parameters of tower crane, initialize system, download operating data, which provides the basis for the structural optimization and accident analysis. Software design of the monitoring systemAccording to the modular design principle, the system software is divided into grading encryption module, system update module, parameter settings module, calibration module, data acquisition and processor module, lifting parameters monitoring module, alarm query module, work statistics module.Alarm thresholds are guarantee for safety operation of the tower crane. Operating data of tower crane are the basis of service life prediction, structural optimization, accident analysis, accident responsibility confirmation. According to key field, the database is divided into different security levels for security requirements. Key fields are grade encryption with symmetrical encryption algorithm, and data keys are protected with elliptic curve encryption algorithm. The association is realized between the users’ permission and security grade of key fields, which will ensure authorized users with different grades to access the equivalent encrypted key fields. The user who meets the grade can access equivalent encrypted database and encrypted key field in the database, also can access low-grade encrypted key fields. This ensures the confidentiality and integrity of key data, and makes the system a real black box.The system is divided into operating mode and management mode in order to make the system toggle between the two states conveniently. The default state is operating mode. As long as the power is on, the monitoring system will be started by the system guide program, and monitor the operating state of the tower crane. The real-time operating data will be displayed on the display screen. At the dangerous state, warning signal will be sent to the driver through voice alarm and light alarm, and corresponding control signal will be output to execution unit to cut off relevant power for tower crane’s safety.By clicking at the mode switch button on the initial interface, the toggle can be finished between the management mode and the operating mode. Under the management mode, there are 4 grades encrypted modes, namely the system update, alarm query, parameter setting and data query. The driver only can browse relevant information. Ordinary administrator can download the alarm information for further analysis. Senior administrator can modify the alarm threshold. The highest administrator can reinitialize system to make it adapt to different types of tower crane. Only browse and download function are available in the key fields of alarm inquiry, anyone can't modify the data. The overload fields in alarm database are encrypted, only senior administrator can browse. The sensitive fields are prevented from being tampered to the great extent, which will provide the reliable basis for the structural optimization and accident analysis. The system can be initialized through the USB interface. Before initialization, type, structural parameters, alarm thresholds, control thresholds, lifting torque characteristics of tower crane should be made as Excel files and then converted to XML files by format conversion files developed specially, then the XML files are downloaded to U disk. The U disk is inserted into USB interface, then the highest administrator can initialize the system according to hints from system. After initialization, senior administrator can modify structural parameters, alarm thresholds, control thresholds by clicking on parameters setting menu. So long as users can make the corresponding excel form, the system initialization can be finished easily according to above steps and used for monitoring. This is very convenient for user.Tower crane belongs to mobile construction machinery. Over time, sensor signals may have some drift, so it is necessary to calibrate the system regularly for guaranteeing the monitoring accuracy. Considering the tower is a linear elastic structure, sensors are linear sensors,in calibration linear equation is used:y=kx+b (1)where x is sample value of sensor, y is actual value. k, b are calibration coefficients, and are calculated out by two-points method. At running mode, the relationship between x and y is:y=[(y1-y0)/(x1-x0)](x-x0)+y0 (2)After calibration, temperature drift and creep can be eliminated, so the monitoring accuracy is improved greatly.Lifting torque is the most important parameter of condition monitoring of tower crane. Comparing the real-time torque M(L) with rated torque Me(L), the movement of tower crane can be controlled under a safe status.M (L)= Q (L)×L (3)Where, Q(L)is actual lifting weight, L is trolley luffing. Me(L) = Qe(L)×L (4)Where, Q e(L) is rated lifting weight. The design values of rated lifting weight are discrete, while trolley luffing is continuous. Therefore there is a rated lifting weight in any position. According to the mechanical characteristics of tower crane, the rated lifting weight is calculated out at any point by 3 spline interpolation according to the rated lifting weight at design points.When lifting weight or lifting torque is beyond rated value, alarm signal and control signal will be sent out. The hoist motor with high, medium and low speed is controlled by the ratio of lifting weight Q and maximum lifting weight Qmax,so the hoisting speed can be controlled automatically by the lifting weight. The luffing motor with high and low speed is controlled by the ratio of lifting torque M and rated lifting torque Me. Thus the luffing speed can be controlled by the lifting torque automatically. The flow chart is shown in figure 2. Fig. 2 real-time control of lifting weight and lifting torqueWhen accidents take place, power will be off suddenly. It is vital for identifying accident liability to record the operating data at the time of power-off. If measures are not taken to save the operating data, the relevant departments is likely to shirk responsibility. In order to solve the problem, the power-off protection module is designed. The module can save the operating data within 120 seconds automatically before power is off suddenly. In this 120 seconds, data is recorded every 0.1 seconds, and stores in a 2D array with 6 rows 1200 columns in queue method. The elements of the first line are the recent time (year-month-day-hour-minute-second), the elements of the second line to sixth line are lifting weight, lifting torque, trolley luffing, lifting height and wind speed in turn. The initial values are zero, when a set of data are obtained, the elements in the first column are eliminated, the elements in the backward columns move frontwards, new elements are filled into the last column of the array, so the array always saves the operating data at the recent 120 seconds. In order to improve the real-time property of the response, and to extend the service life of the nonvolatile memory chip EEPROM-93C46, the array is cached in volatile flip SDRAM usually. So long as power-off signal produces, the array will be shift to EEPROM, at once.In order to achieve the task, the external interruption thread and the power-off monitoring thread of program is set up, the power-off monitoring thread of program is the highest priority. These two threads is idle during normal operation. When power is off, the power-off monitoring thread of program can be executed immediately. When power-off is monitored by power-off control circuit, the external interruption pins produces interrupt signal. The ARM microprocessor responds to external interrupt request, and wakes up the processing thread of external interruption, then sets synchronized events as informing state. After receiving the synchronized events, the data cached in SDRAM will be written to EEPROM in time.ConclusionThe general intelligence embedded monitoring system of tower crane, which can be applicable to various types of tower crane operating under any lifting rates, uses U disk with the information of the tower crane to finish the system initialization and fits the lifting torque curve automatically. In dangerous state, the system will give out the voice and light alarm, link with the relay or PLC by the RS485 communication interface, and cut off the power. When power is down suddenly, the instantaneous operating data can be recorded automatically, and stored in a black box, which can be taken as the proof for identifying accident responsibility. The system has been used to monitor the "JiangLu" series of tower cranes successfully, and achieved good social and economic benefits.AcknowledgementsThe authors wish to thank China Natural Science Foundation(50975289), China Postdoctoral Science Foundation(20100471229), Hunan science & technology plan, Jianglu Machinery & Electronics Co. Ltd for funding this work.Reference Leonard Bernold. Intelligent Technology for Crane Accident Prevention. Journal of Construction Engineering and Management. 1997, 9: 122~124.Gu Lichen,Lei Peng,Jia Yongfeng. Tower crane' monitor and control based on multi-sensor. Journal of Vibration, Measurement and Diagnosis. 2006, 26(SUPPL.): 174-178.Wang Ming,Zhang Guiqing,Yan Qiao,et, al. Development of a novel black box for tower crane based on an ARM-based embedded system. Proceedings of the IEEE International Conference on Automation and Logistics. 2007: 82-87.Wang Renqun, Yin Chenbo, Zhang Song, et, al. Tower Crane Safety Monitoring and Control System Based on CAN Bus. Instrument Techniques and Sensor. 2010(4): 48-51.Zheng Conghai,Li Yanming,Yang Shanhu,et, al. Intelligent Monitoring System for Tower Crane Based on BUS Architecture and Cut IEEE1451 Standard. Computer Measurement & Control. 2010, 18, (9): 1992-1995.Yang Yu,Zhenlian Zhao,Liang Chen. Research and Design of Tower Crane Condition Monitoring and Fault Diagnosis System. 2010 Proceedings of International Conference on Artificial Intelligence and Computational Intelligence. 2010: 405-408.Yu Yang, Chen Liang, Zhao Zhenlian. Research and design of tower crane condition monitoring and fault diagnosis system. International Conference on Artificial Intelligence and Computational Intelligence, 2010, 3: 405-408.Chen Baojiang, Zeng Xiaoyuan. Research on structural frame of the embedded monitoring and control system for tower crane. 2010 International Conference on Mechanic Automation and Control Engineering. 2010: 5374-5377.
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Tomina, Elena V., Dmitry A. Lastochkin, and Sergey A. Maltsev. "The Synthesis of Nanophosphors YPxV1–xO4 by Spray Pyrolysis and Microwave Methods." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 22, no. 4 (December 15, 2020): 496–503. http://dx.doi.org/10.17308/kcmf.2020.22/3120.

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Due to rare earth doping, phosphates and vanadates are the leading materials for the synthesis of phosphors due to their thermal stability, low sintering temperature, and chemical stability. Phosphors in the nanoscale state are of particular interest. The simple, fast, and scalable synthesis of nanophosphors with high chemical homogeneity is a priority task. The purpose of this work was to synthesize powders of mixed yttrium vanadate-phosphate crystals of various compositions by coprecipitation under the action of microwave radiation and spray pyrolysis, as well as to compare the characteristics ofthe obtained samples. Samples of YVхP1–хO4 of different compositions were synthesized by coprecipitation under the action of microwave radiation and spray pyrolysis in different modes. In the case of the synthesis of yttrium vanadate-phosphate YVхP1–хO4 by spray pyrolysis followed by annealing, according to the X-ray phase analysis data, single-phase nanopowders were formed. The morphological characteristics of the samples were revealed by the methods of transmission electron microscopy and scanning electron microscopy. Depending on the annealing conditions, the samples were either faceted or spherical particlesless than 100 nm in size. The composition of the YVхP1–хO4 , samples synthesized by the coprecipitation method under the action of microwave radiation strongly depended on the pH of the precursor solution. The minimum content of impurity phases was reached at pH 9.Spray pyrolysis allows the synthesis of yttrium vanadate phosphate YVхP1–хO4 nanopowders of high chemical homogeneity with a particle size of less than 100 nm. The maximum chemical homogeneity of yttrium vanadate-phosphate powders was achieved at pH = 9 during the synthesis of YVхP1–хO4 by coprecipitation under the action of microwave radiation. However, the particle size dispersion was large, within the range of 2–60 μm. References 1. Wu C., Wang Y., Jie W. Hydrothermal synthesisand luminescent properties of LnPO4:Tb (Ln = La, Gd)phosphors under VUV excitation. Journal of Alloys andCompounds. 2007;436: 383–386. DOI: https://doi.org/10.1016/j.jallcom.2006.07.0562. Huang J., Tang L., Chen N., Du G. Broadeningthe photoluminescence excitation spectral bandwidthof YVO4:Eu3+ nanoparticles via a novel core-shell andhybridization approach. Materials. 2019;12: 3830. DOI:https://doi.org/10.3390/ma122338303. Wu Y., Zhang Z., Suo H., Zhao X., Guo C. 808 nmlight triggered up-conversion optical nano-thermometerYPO4:Nd3+/Yb3+/Er3+ based on FIR technology.Journal of Luminescence. 2019;214: 116478. DOI:https://doi.org/10.1016/j.jlumin.2019.1165784. Xiu Z., Wu Y., Hao X., Li X., Zhang L. Uniformand well-dispersed Y2O3:Eu/YVO4:Eu composite microsphereswith high photoluminescence prepared bychemical corrosion approach. Colloids Surf. A.2012;401(5): 68–73. DOI: https://doi.org/10.1016/j.colsurfa.2012.03.0215. Vats B. G., Gupta S. K., Keskar M., Phatak R.,Mukherjee S., Kannan S. The effect of vanadium substitutionon photoluminescent properties of KSrLa(-PO4)x(VO4)2x:Eu3+ phosphors, a new variant of phosphovanadates.New Journal of Chemistry. 2016;40(2):1799–1806. DOI: https://doi.org/10.1039/c5nj02951a6. Riwotzki K., Haase M. Colloidal YVO4:Eu andYP0.95V0.05O4:Eu nanoparticles: luminescence and energytransfer processes. The Journal of Physical ChemistryB. 2001;105(51): 12709–12713. DOI: https://doi.org/10.1021/jp01137357. Wu C.-C., Chen K.-B., Lee C.-S., Chen T.-M.,Cheng B.-M. Synthesis and VUV photoluminescencecharacterization of (Y,Gd)(V,P)O4:Eu3+ as a potentialred-emitting PDP phosphor. Chem. Mater. 2007;19(13):3278–3285. DOI: https://doi.org/10.1021/cm061042a8. Shimomura Y., Kurushima T., Olivia R., Kijima N.Synthesis of Y(P,V)O4:Eu3+ red phosphor by spray pyrolysiswithout postheating. The Japan Society of Applied.2005;44(3): 1356–1360. DOI: https://doi.org/10.1143/JJAP.44.13569. Lai H, Chen B., Xu W., Xie Y., Wang X., Di W. Fineparticles (Y,Gd)PxV1−xO4:Eu3+ phosphor for PDP preparedby coprecipitation reaction. Materials Letters.2006; 60 (11): 1341-1343. DOI: https://doi.org/10.1016/j.matlet.2005.11.05110. Singh V., Takami S., Aoki N., Hojo D., Arita T.,Adschiri T. Hydrothermal synthesis of luminescentGdVO4:Eu nanoparticles with dispersibility in organicsolvents. Journal of Nanoparticle Research. 2014;16(5):2378. DOI: https://doi.org/10.1007/s11051-014-2378-211. Song W.-S., Kim Y.-S., Yang H. Hydrothermalsynthesis of self-emitting Y(V,P)O4 nanophosphors forfabrication of transparent blue-emitting display device.Journal of Luminescence. 2012;132(5): 1278–1284.DOI: https://doi.org/10.1016/j.jlumin.2012.01.01512. Yu M., Lin J., Fu J., Han Y. Sol–gel fabrication,patterning and photoluminescent properties ofLaPO4:Ce3+, Tb3+ nanocrystalline thin films. ChemicalPhysics Letters. 2003;5(1-2): 178–183. DOI: https://doi.org/10.1016/S0009-2614(03)00239-213. Raoufi D., Raoufi T. The effect of heat treatmenton the physical properties of sol–gel derived ZnO thinfilms. Applied Surface Science. 2009;255(11): 5812–5817. DOI: https://doi.org/10.1016/j.ap-susc.2009.01.01014. Shao J., Yan J., Li X., Li S., Hu T. Novel fluorescentlabel based on YVO4:Bi3+, Eu3+ for latent fingerprintdetection. Dyes and Pigments. 2019;160: 555–562.DOI: https://doi.org/10.1016/j.dyepig.2018.08.03315. Dolinskaya Yu. A., Kolesnikov I. E., KurochkinA. V., Man’shina A. A., Mikhailov M. D., SemenchaA. V. Sol-Gel synthesis and luminescent propertiesof YVO4: Eu nanoparticles. Glass Physics and Chemistry.2013;39(3): 308–310. DOI: https://doi.org/10.1134/s108765961303006116. Tomina E. V., Sladkopevtsev B. V., Knurova M. V.,Latyshev A.N., Mittova I. Y., Mittova V. O. Microwavesynthesis and luminescence properties of YVO4:Eu3+.Inorganic Materials. 2016;52(5): 495–498. DOI: https://doi.org/10.7868/S0002337X1605017117. Tomina E. V., Mittova I. J., Burtseva N. A.,Sladkopevtsev B. V. Method for synthesis of yttrium orthovanadate-based phosphor: patent for invention No2548089. The patent holder FGBOU VPO “Voronezhstate University” No 2013133382/05; declared12.11.2013; published. 20.05.2015.18. Tomina E. V., Kurkin N. A., & Mal’tsev S. A.Microwave synthesis of yttrium orthoferrite dopedwith nickel. Kondensirovannye sredy i mezhfaznyegranitsy = Condensed Matter and Interphases.2019;21(2): 306–312. DOI:https://doi.org/10.17308/kcmf.2019.21/768 (In Russ., abstract in Eng.)19. Huang J., Gao R., Lu Z., Qian D., Li W., Huang B.,He X. Sol–gel preparation and photoluminescenceenhancement of Li+ and Eu3+ co-doped YPO4 nanophosphors.Optical Materials. 2010;32(9): 857–861.DOI: https://doi.org/10.1016/j.optmat.2009.12.01120. Brandon D., Kaplan W. D. MicrostructuralCharacterization of Materials. John Wiley & Sons Ltd;1999. 409 p. DOI: https://doi.org/10.1002/9780470727133
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21

Coto-Vílchez, F., V. I. Vargas, R. Solano-Piedra, M. A. Rojas-Quesada, L. A. Araya-Solano, A. A. Ramírez, M. Hernández-Cisneros, et al. "Progress on the small modular stellarator SCR-1: new diagnostics and heating scenarios." Journal of Plasma Physics 86, no. 4 (July 8, 2020). http://dx.doi.org/10.1017/s0022377820000677.

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This work presents updates in the diagnostics systems, magnetohydrodynamics (MHD) calculations and simulations of microwave heating scenarios of the small modular Stellarator of Costa Rica 1 (SCR-1). Similarly, the design of a flexible bolometer and magnetic diagnostics (a set of Mirnov coils, Rogowski coils and two diamagnetic loops) are introduced. Furthermore, new MHD equilibrium calculations for the plasma of the SCR-1 device were performed using the VMEC code including the poloidal cross-section of the magnetic flux surfaces at different toroidal positions, profiles of the rotational transform, magnetic well, magnetic shear and total magnetic field norm. Charged particle orbits in vacuum magnetic field were computed by the magnetic field solver BS-SOLCTRA (Vargas et al. In 27th IAEA Fusion Energy Conference (FEC 2018), 2018. IAEA). A visualization framework was implemented using Paraview (Solano-Piedra et al. In 23rd IAEA Technical Meeting on the Research Using Small Fusion Devices (23rd TM RUSFD), 2017) and compared with magnetic mapping results (Coto-Vílchez et al. In 16th Latin American Workshop on Plasma Physics (LAWPP), 2017, pp. 43–46). Additionally, simulations of microwave heating scenarios were performed by the IPF-FDMC full-wave code. These simulations calculate the conversion of the ordinary waves to extraordinary waves and allow us to identify the location where the conversion takes place. Finally, the microwave heating scenarios for the $330^{\circ }$ toroidal position are presented. The microwave heating scenarios showed that the O–X–B mode conversion is around 12–14 %. It was possible to identify the spatial zone where the conversion takes place (upper hybrid frequency).
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Broderick, Mick, Stuart Marshall Bender, and Tony McHugh. "Virtual Trauma: Prospects for Automediality." M/C Journal 21, no. 2 (April 25, 2018). http://dx.doi.org/10.5204/mcj.1390.

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Unlike some current discourse on automediality, this essay eschews most of the analysis concerning the adoption or modification of avatars to deliberately enhance, extend or distort the self. Rather than the automedial enabling of alternative, virtual selves modified by playful, confronting or disarming avatars we concentrate instead on emerging efforts to present the self in hyper-realist, interactive modes. In doing so we ask, what is the relationship between traumatic forms of automediation and the affective impact on and response of the audience? We argue that, while on the one hand there are promising avenues for valuable individual and social engagements with traumatic forms of automediation, there is an overwhelming predominance of suffering as a theme in such virtual depictions, comingled with uncritically asserted promises of empathy, which are problematic as the technology assumes greater mainstream uptake.As Smith and Watson note, embodiment is always a “translation” where the body is “dematerialized” in virtual representation (“Virtually” 78). Past scholarship has analysed the capacity of immersive realms, such as Second Life or online games, to highlight how users can modify their avatars in often spectacular, non-human forms. Critics of this mode of automediality note that users can adopt virtually any persona they like (racial, religious, gendered and sexual, human, animal or hybrid, and of any age), behaving as “identity tourists” while occupying virtual space or inhabiting online communities (Nakamura). Furthermore, recent work by Jaron Lanier, a key figure from the 1980s period of early Virtual Reality (VR) technology, has also explored so-called “homuncular flexibility” which describes the capacity for humans to seemingly adapt automatically to the control mechanisms of an avatar with multiple legs, other non-human appendages, or for two users to work in tandem to control a single avatar (Won et. al.). But this article is concerned less with these single or multi-player online environments and the associated concerns over modifying interactive identities. We are principally interested in other automedial modes where the “auto” of autobiography is automated via Artificial Intelligences (AIs) to convincingly mimic human discourse as narrated life-histories.We draw from case studies promoted by the 2017 season of ABC television’s flagship science program, Catalyst, which opened with semi-regular host and biological engineer Dr Jordan Nguyen, proclaiming in earnest, almost religious fervour: “I want to do something that has long been a dream. I want to create a copy of a human. An avatar. And it will have a life of its own in virtual reality.” As the camera followed Nguyen’s rapid pacing across real space he extolled: “Virtual reality, virtual human, they push the limits of the imagination and help us explore the impossible […] I want to create a virtual copy of a person. A digital addition to the family, using technology we have now.”The troubling implications of such rhetoric were stark and the next third of the program did little to allay such techno-scientific misgivings. Directed and produced by David Symonds, with Nguyen credited as co-developer and presenter, the episode “Meet the Avatars” immediately introduced scenarios where “volunteers” entered a pop-up inner city virtual lab, to experience VR for the first time. The volunteers were shown on screen subjected to a range of experimental VR environments designed to elicit fear and/or adverse and disorienting responses such as vertigo, while the presenter and researchers from Sydney University constantly smirked and laughed at their participants’ discomfort. We can only wonder what the ethics process was for both the ABC and university researchers involved in these broadcast experiments. There is little doubt that the participant/s experienced discomfort, if not distress, and that was televised to a national audience. Presenter Nguyen was also shown misleading volunteers on their way to the VR lab, when one asked “You’re not going to chuck us out of a virtual plane are you?” to which Nguyen replied “I don't know what we’re going to do yet,” when it was next shown that they immediately underwent pre-programmed VR exposure scenarios, including a fear of falling exercise from atop a city skyscraper.The sweat-inducing and heart rate-racing exposures to virtual plank walks high above a cityscape, or seeing subjects haptically viewing spiders crawl across their outstretched virtual hands, all elicited predictable responses, showcased as carnivalesque entertainment for the viewing audience. As we will see, this kind of trivialising of a virtual environment’s capacity for immersion belies the serious use of the technology in a range of treatments for posttraumatic stress disorder (see Rizzo and Koenig; Rothbaum, Rizzo and Difede).Figure 1: Nguyen and researchers enjoying themselves as their volunteers undergo VR exposure Defining AutomedialityIn their pioneering 2008 work, Automedialität: Subjektkonstitution in Schrift, Bild und neuen Medien, Jörg Dünne and Christian Moser coined the term “automediality” to problematise the production, application and distribution of autobiographic modes across various media and genres—from literary texts to audiovisual media and from traditional expression to inter/transmedia and remediated formats. The concept of automediality was deployed to counter the conventional critical exclusion of analysis of the materiality/technology used for an autobiographical purpose (Gernalzick). Dünne and Moser proffered a concept of automediality that rejects the binary division of (a) self-expression determining the mediated form or (b) (self)subjectivity being solely produced through the mediating technology. Hence, automediality has been traditionally applied to literary constructs such as autobiography and life-writing, but is now expanding into the digital domain and other “paratextual sites” (Maguire).As Nadja Gernalzick suggests, automediality should “encourage and demand not only a systematics and taxonomy of the constitution of the self in respectively genre-specific ways, but particularly also in medium-specific ways” (227). Emma Maguire has offered a succinct working definition that builds on this requirement to signal the automedial universally, noting it operates asa way of studying auto/biographical texts (of a variety of forms) that take into account how the effects of media shape the kinds of selves that can be represented, and which understands the self not as a preexisting subject that might be distilled into story form but as an entity that is brought into being through the processes of mediation.Sidonie Smith and Julia Watson point to automediality as a methodology, and in doing so emphasize how the telling or mediation of a life actually shapes the kind of story that can be told autobiographically. They state “media cannot simply be conceptualized as ‘tools’ for presenting a preexisting, essential self […] Media technologies do not just transparently present the self. They constitute and expand it” (Smith and Watson “Virtually Me” 77).This distinction is vital for understanding how automediality might be applied to self-expression in virtual domains, including the holographic avatar dreams of Nguyen throughout Catalyst. Although addressing this distinction in relation to online websites, following P. David Marshall’s description of “the proliferation of the public self”, Maguire notes:The same integration of digital spaces and platforms into daily life that is prompting the development of new tools in autobiography studies […] has also given rise to the field of persona studies, which addresses the ways in which individuals engage in practices of self-presentation in order to form commoditised identities that circulate in affective communities.For Maguire, these automedial works operate textually “to construct the authorial self or persona”.An extension to this digital, authorial construction is apparent in the exponential uptake of screen mediated prosumer generated content, whether online or theatrical (Miller). According to Gernalzick, unlike fictional drama films, screen autobiographies more directly enable “experiential temporalities”. Based on Mary Anne Doane’s promotion of the “indexicality” of film/screen representations to connote the real, Gernalzick suggests that despite semiotic theories of the index problematising realism as an index as representation, the film medium is still commonly comprehended as the “imprint of time itself”:Film and the spectator of film are said to be in a continuous present. Because the viewer is aware, however, that the images experienced in or even as presence have been made in the past, the temporality of the so-called filmic present is always ambiguous” (230).When expressed as indexical, automedial works, the intrinsic audio-visual capacities of film and video (as media) far surpass the temporal limitations of print and writing (Gernalzick, 228). One extreme example can be found in an emergent trend of “performance crime” murder and torture videos live-streamed or broadcast after the fact using mobile phone cameras and FaceBook (Bender). In essence, the political economy of the automedial ecology is important to understand in the overall context of self expression and the governance of content exhibition, access, distribution and—where relevant—interaction.So what are the implications for automedial works that employ virtual interfaces and how does this evolving medium inform both the expressive autobiographical mode and audiences subjectivities?Case StudyThe Catalyst program described above strove to shed new light on the potential for emerging technology to capture and create virtual avatars from living participants who (self-)generate autobiographical narratives interactively. Once past the initial gee-wiz journalistic evangelism of VR, the episode turned towards host Nguyen’s stated goal—using contemporary technology to create an autonomous virtual human clone. Nguyen laments that if he could create only one such avatar, his primary choice would be that of his grandfather who died when Nguyen was two years old—a desire rendered impossible. The awkward humour of the plank walk scenario sequence soon gives way as the enthusiastic Nguyen is surprised by his family’s discomfort with the idea of digitally recreating his grandfather.Nguyen next visits a Southern California digital media lab to experience the process by which 3D virtual human avatars are created. Inside a domed array of lights and cameras, in less than one second a life-size 3D avatar is recorded via 6,000 LEDs illuminating his face in 20 different combinations, with eight cameras capturing the exposures from multiple angles, all in ultra high definition. Called the Light Stage (Debevec), it is the same technology used to create a life size, virtual holocaust survivor, Pinchas Gutter (Ziv).We see Nguyen encountering a life-size, high-resolution 2D screen version of Gutter’s avatar. Standing before a microphone, Nguyen asks a series of questions about Gutter’s wartime experiences and life in the concentration camps. The responses are naturalistic and authentic, as are the pauses between questions. The high definition 4K screen is photo-realist but much more convincing in-situ (as an artifact of the Catalyst video camera recording, in some close-ups horizontal lines of transmission appear). According to the project’s curator, David Traum, the real Pinchas Gutter was recorded in 3D as a virtual holograph. He spent 25 hours providing 1,600 responses to a broad range of questions that the curator maintained covered “a lot of what people want to say” (Catalyst).Figure 2: The Museum of Jewish Heritage in Manhattan presented an installation of New Dimensions in Testimony, featuring Pinchas Gutter and Eva SchlossIt is here that the intersection between VR and auto/biography hybridise in complex and potentially difficult ways. It is where the concept of automediality may offer insight into this rapidly emerging phenomenon of creating interactive, hyperreal versions of our selves using VR. These hyperreal VR personae can be questioned and respond in real-time, where interrogators interact either as casual conversers or determined interrogators.The impact on visitors is sobering and palpable. As Nguyen relates at the end of his session, “I just want to give him a hug”. The demonstrable capacity for this avatar to engender a high degree of empathy from its automedial testimony is clear, although as we indicate below, it could simply indicate increased levels of emotion.Regardless, an ongoing concern amongst witnesses, scholars and cultural curators of memorials and museums dedicated to preserving the history of mass violence, and its associated trauma, is that once the lived experience and testimony of survivors passes with that generation the impact of the testimony diminishes (Broderick). New media modes of preserving and promulgating such knowledge in perpetuity are certainly worthy of embracing. As Stephen Smith, the executive director of the USC Shoah Foundation suggests, the technology could extendto people who have survived cancer or catastrophic hurricanes […] from the experiences of soldiers with post-traumatic stress disorder or survivors of sexual abuse, to those of presidents or great teachers. Imagine if a slave could have told her story to her grandchildren? (Ziv)Yet questions remain as to the veracity of these recorded personae. The avatars are created according to a specific agenda and the autobiographical content controlled for explicit editorial purposes. It is unclear what and why material has been excluded. If, for example, during the recorded questioning, the virtual holocaust survivor became mute at recollecting a traumatic memory, cried or sobbed uncontrollably—all natural, understandable and authentic responses given the nature of the testimony—should these genuine and spontaneous emotions be included along with various behavioural ticks such as scratching, shifting about in the seat and other naturalistic movements, to engender a more profound realism?The generation of the photorealist, mimetic avatar—remaining as an interactive persona long after the corporeal, authorial being is gone—reinforces Baudrillard’s concept of simulacra, where a clone exists devoid of its original entity and unable to challenge its automedial discourse. And what if some unscrupulous hacker managed to corrupt and subvert Gutter’s AI so that it responded antithetically to its purpose, by denying the holocaust ever happened? The ethical dilemmas of such a paradigm were explored in the dystopian 2013 film, The Congress, where Robyn Wright plays herself (and her avatar), as an out of work actor who sells off the rights to her digital self. A movie studio exploits her screen persona in perpetuity, enabling audiences to “become” and inhabit her avatar in virtual space while she is limited in the real world from undertaking certain actions due to copyright infringement. The inability of Wright to control her mimetic avatar’s discourse or action means the assumed automedial agency of her virtual self as an immortal, interactive being remains ontologically perplexing.Figure 3: Robyn Wright undergoing a full body photogrammetry to create her VR avatar in The Congress (2013)The various virtual exposures/experiences paraded throughout Catalyst’s “Meet the Avatars” paradoxically recorded and broadcast a range of troubling emotional responses to such immersion. Many participant responses suggest great caution and sensitivity be undertaken before plunging headlong into the new gold rush mentality of virtual reality, augmented reality, and AI affordances. Catalyst depicted their program subjects often responding in discomfort and distress, with some visibly overwhelmed by their encounters and left crying. There is some irony that presenter Ngyuen was himself relying on the conventions of 2D linear television journalism throughout, adopting face-to-camera address in (unconscious) automedial style to excitedly promote the assumed socio-cultural boon such automedial VR avatars will generate.Challenging AuthenticityThere are numerous ethical considerations surrounding the potential for AIs to expand beyond automedial (self-)expression towards photorealist avatars interacting outside of their pre-recorded content. When such systems evolve it may be neigh impossible to discern on screen whether the person you are conversing with is authentic or an indistinguishable, virtual doppelganger. In the future, a variant on the Turning Test may be needed to challenge and identify such hyperreal simulacra. We may be witnessing the precursor to such a dilemma playing out in the arena of audio-only podcasts, with some public intellectuals such as Sam Harris already discussing the legal and ethical problems from technology that can create audio from typed text that convincingly replicate the actual voice of a person by sampling approximately 30 minutes of their original speech (Harris). Such audio manipulation technology will soon be available to anybody with the motivation and relatively minor level of technological ability in order to assume an identity and masquerade as automediated dialogue. However, for the moment, the ability to convincingly alter a real-time computer generated video image of a person remains at the level of scientific innovation.Also of significance is the extent to which the audience reactions to such automediated expressions are indeed empathetic or simply part of the broader range of affective responses that also include direct sympathy as well as emotions such as admiration, surprise, pity, disgust and contempt (see Plantinga). There remains much rhetorical hype surrounding VR as the “ultimate empathy machine” (Milk). Yet the current use of the term “empathy” in VR, AI and automedial forms of communication seems to be principally focused on the capacity for the user-viewer to ameliorate negatively perceived emotions and experiences, whether traumatic or phobic.When considering comments about authenticity here, it is important to be aware of the occasional slippage of technological terminology into the mainstream. For example, the psychological literature does emphasise that patients respond strongly to virtual scenarios, events, and details that appear to be “authentic” (Pertaub, Slater, and Barker). Authentic in this instance implies a resemblance to a corresponding scenario/activity in the real world. This is not simply another word for photorealism, but rather it describes for instance the experimental design of one study in which virtual (AI) audience members in a virtual seminar room designed to treat public speaking anxiety were designed to exhibit “random autonomous behaviours in real-time, such as twitches, blinks, and nods, designed to encourage the illusion of life” (Kwon, Powell and Chalmers 980). The virtual humans in this study are regarded as having greater authenticity than an earlier project on social anxiety (North, North, and Coble) which did not have much visual complexity but did incorporate researcher-triggered audio clips of audience members “laughing, making comments, encouraging the speaker to speak louder or more clearly” (Kwon, Powell, and Chalmers 980). The small movements, randomly cued rather than according to a recognisable pattern, are described by the researchers as creating a sense of authenticity in the VR environment as they seem to correspond to the sorts of random minor movements that actual human audiences in a seminar can be expected to make.Nonetheless, nobody should regard an interaction with these AIs, or the avatar of Gutter, as in any way an encounter with a real person. Rather, the characteristics above function to create a disarming effect and enable the real person-viewer to willingly suspend their disbelief and enter into a pseudo-relationship with the AI; not as if it is an actual relationship, but as if it is a simulation of an actual relationship (USC). Lucy Suchman and colleagues invoke these ideas in an analysis of a YouTube video of some apparently humiliating human interactions with the MIT created AI-robot Mertz. Their analysis contends that, while it may appear on first glance that the humans’ mocking exchange with Mertz are mean-spirited, there is clearly a playfulness and willingness to engage with a form of AI that is essentially continuous with “long-standing assumptions about communication as information processing, and in the robot’s performance evidence for the limits to the mechanical reproduction of interaction as we know it through computational processes” (Suchman, Roberts, and Hird).Thus, it will be important for future work in the area of automediated testimony to consider the extent to which audiences are willing to suspend disbelief and treat the recounted traumatic experience with appropriate gravitas. These questions deserve attention, and not the kind of hype displayed by the current iteration of techno-evangelism. Indeed, some of this resurgent hype has come under scrutiny. From the perspective of VR-based tourism, Janna Thompson has recently argued that “it will never be a substitute for encounters with the real thing” (Thompson). Alyssa K. Loh, for instance, also argues that many of the negatively themed virtual experiences—such as those that drop the viewer into a scene of domestic violence or the location of a terrorist bomb attack—function not to put you in the position of the actual victim but in the position of the general category of domestic violence victim, or bomb attack victim, thus “deindividuating trauma” (Loh).Future work in this area should consider actual audience responses and rely upon mixed-methods research approaches to audience analysis. In an era of alt.truth and Cambridge Analytics personality profiling from social media interaction, automediated communication in the virtual guise of AIs demands further study.ReferencesAnon. “New Dimensions in Testimony.” Museum of Jewish Heritage. 15 Dec. 2017. 19 Apr. 2018 <http://mjhnyc.org/exhibitions/new-dimensions-in-testimony/>.Australian Broadcasting Corporation. “Meet The Avatars.” Catalyst, 15 Aug. 2017.Baudrillard, Jean. “Simulacra and Simulations.” Jean Baudrillard: Selected Writings. Ed. Mark Poster. Stanford: Stanford UP, 1988. 166-184.Bender, Stuart Marshall. Legacies of the Degraded Image in Violent Digital Media. Basingstoke: Palgrave Macmillan, 2017.Broderick, Mick. “Topographies of Trauma, Dark Tourism and World Heritage: Hiroshima’s Genbaku Dome.” Intersections: Gender and Sexuality in Asia and the Pacific. 24 Apr. 2010. 14 Apr. 2018 <http://intersections.anu.edu.au/issue24/broderick.htm>.Debevec, Paul. “The Light Stages and Their Applications to Photoreal Digital Actors.” SIGGRAPH Asia. 2012.Doane, Mary Ann. The Emergence of Cinematic Time: Modernity, Contingency, the Archive. Cambridge: Harvard UP, 2002.Dünne, Jörg, and Christian Moser. “Allgemeine Einleitung: Automedialität”. Automedialität: Subjektkonstitution in Schrift, Bild und neuen Medien. Eds. Jörg Dünne and Christian Moser. München: Wilhelm Fink, 2008. 7-16.Harris, Sam. “Waking Up with Sam Harris #64 – Ask Me Anything.” YouTube, 16 Feb. 2017. 16 Mar. 2018 <https://www.youtube.com/watch?v=gMTuquaAC4w>.Kwon, Joung Huem, John Powell, and Alan Chalmers. “How Level of Realism Influences Anxiety in Virtual Reality Environments for a Job Interview.” International Journal of Human-Computer Studies 71.10 (2013): 978-87.Loh, Alyssa K. "I Feel You." Artforum, Nov. 2017. 10 Apr. 2018 <https://www.artforum.com/print/201709/alyssa-k-loh-on-virtual-reality-and-empathy-71781>.Marshall, P. David. “Persona Studies: Mapping the Proliferation of the Public Self.” Journalism 15.2 (2014): 153-170.Mathews, Karen. “Exhibit Allows Virtual ‘Interviews’ with Holocaust Survivors.” Phys.org Science X Network, 15 Dec. 2017. 18 Apr. 2018 <https://phys.org/news/2017-09-virtual-holocaust-survivors.html>.Maguire, Emma. “Home, About, Shop, Contact: Constructing an Authorial Persona via the Author Website” M/C Journal 17.9 (2014).Miller, Ken. More than Fifteen Minutes of Fame: The Evolution of Screen Performance. Unpublished PhD Thesis. Murdoch University. 2009.Milk, Chris. “Ted: How Virtual Reality Can Create the Ultimate Empathy Machine.” TED Conferences, LLC. 16 Mar. 2015. <https://www.ted.com/talks/chris_milk_how_virtual_reality_can_create_the_ultimate_empathy_machine>.Nakamura, Lisa. “Cyberrace.” Identity Technologies: Constructing the Self Online. Eds. Anna Poletti and Julie Rak. Madison, Wisconsin: U of Wisconsin P, 2014. 42-54.North, Max M., Sarah M. North, and Joseph R Coble. "Effectiveness of Virtual Environment Desensitization in the Treatment of Agoraphobia." International Journal of Virtual Reality 1.2 (1995): 25-34.Pertaub, David-Paul, Mel Slater, and Chris Barker. “An Experiment on Public Speaking Anxiety in Response to Three Different Types of Virtual Audience.” Presence: Teleoperators and Virtual Environments 11.1 (2002): 68-78.Plantinga, Carl. "Emotion and Affect." The Routledge Companion to Philosophy and Film. Eds. Paisley Livingstone and Carl Plantinga. New York: Routledge, 2009. 86-96.Rizzo, A.A., and Sebastian Koenig. “Is Clinical Virtual Reality Ready for Primetime?” Neuropsychology 31.8 (2017): 877-99.Rothbaum, Barbara O., Albert “Skip” Rizzo, and JoAnne Difede. "Virtual Reality Exposure Therapy for Combat-Related Posttraumatic Stress Disorder." Annals of the New York Academy of Sciences 1208.1 (2010): 126-32.Smith, Sidonie, and Julia Watson. Reading Autobiography: A Guide to Interpreting Life Narratives. 2nd ed. Minneapolis: U of Minnesota P, 2010.———. “Virtually Me: A Toolbox about Online Self-Presentation.” Identity Technologies: Constructing the Self Online. Eds. Anna Poletti and Julie Rak. Madison: U of Wisconsin P, 2014. 70-95.Suchman, Lucy, Celia Roberts, and Myra J. Hird. "Subject Objects." Feminist Theory 12.2 (2011): 119-45.Thompson, Janna. "Why Virtual Reality Cannot Match the Real Thing." The Conversation, 14 Mar. 2018. 10 Apr. 2018 <http://theconversation.com/why-virtual-reality-cannot-match-the-real-thing-92035>.USC. "Skip Rizzo on Medical Virtual Reality: USC Global Conference 2014." YouTube, 28 Oct. 2014. 2 Apr. 2018 <https://www.youtube.com/watch?v=PdFge2XgDa8>.Won, Andrea Stevenson, Jeremy Bailenson, Jimmy Lee, and Jaron Lanier. "Homuncular Flexibility in Virtual Reality." Journal of Computer-Mediated Communication 20.3 (2015): 241-59.Ziv, Stan. “How Technology Is Keeping Holocaust Survivor Stories Alive Forever”. Newsweek, 18 Oct. 2017. 19 Apr. 2018 <http://www.newsweek.com/2017/10/27/how-technology-keeping-holocaust-survivor-stories-alive-forever-687946.html>.
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Sk, Farooq. "Journal Vol – 15 No -7, July 2020 Journal > Journal > Journal Vol – 15 No -7, July 2020 > Page 6 PERFORMANCE AND EMISSION CHARACTERISTICS OF GASOLINE-ETHANOL BLENDS ON PFI-SI ENGINE Authors: D.Vinay Kumar ,G.Samhita Priyadarsini,V.Jagadeesh Babu,Y.Sai Varun Teja, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00051 admin July 26, 2020 Abstract: Alcohol based fuels can be produced from renewable energy sources and has the potential to reduce pollutant emissions due to their oxygenated nature. Lighter alcohols like ethanol and methanol are easily miscible with gasoline and by blending alcohols with gasoline; a part of conventional fuel can be replaced while contributing to fuel economy. Several researchers tested various ethanol blends on different engine test rigs and identified ethanol as one of the most promising ecofriendly fuels for spark ignition engine. Its properties high octane number, high latent heat of vaporization give better performance characteristics and reduces exhaust emissions compared to gasoline. This paper focuses on studying the effects of blending 50 of ethanol by volume with gasoline as it hardly needs engine modifications. Gasoline (E0) and E50 fuels were investigated experimentally on single-cylinder, four-stroke port fuel injection spark ignition engine by varying engine speed from 1500 rpm to 3500 rpm. Performance Characteristics like torque, brake power, specific fuel consumption, and volumetric efficiency and exhaust emissions such as HC, CO, CO2, NOx were studied.. Keywords: Ethanol,Emissions,Gasoline,Port fuel Injection, Refference: I Badrawada, I. G. G., and A. A. P. Susastriawan. “Influence of ethanol–gasoline blend on performance and emission of four-stroke spark ignition motorcycle.” Clean Technologies and Environmental Policy (2019): 1-6. II Doğan, Battal, et al. “The effect of ethanol-gasoline blends on performance and exhaust emissions of a spark ignition engine through exergy analysis.” Applied Thermal Engineering 120 (2017): 433-443. III Efemwenkiekie, U. Ka, et al. “Comparative Analysis of a Four Stroke Spark Ignition Engine Performance Using Local Ethanol and Gasoline Blends.” Procedia Manufacturing 35 (2019): 1079-1086. IV Galloni, E., F. Scala, and G. Fontana. “Influence of fuel bio-alcohol content on the performance of a turbo-charged, PFI, spark-ignition engine.” Energy 170 (2019): 85-92. V Hasan, Ahmad O., et al. “Impact of changing combustion chamber geometry on emissions, and combustion characteristics of a single cylinder SI (spark ignition) engine fueled with ethanol/gasoline blends.” Fuel 231 (2018): 197-203. VI Mourad, M., and K. Mahmoud. “Investigation into SI engine performance characteristics and emissions fuelled with ethanol/butanol-gasoline blends.” Renewable Energy 143 (2019): 762-771. VII Singh, Ripudaman, et al. “Influence of fuel injection strategies on efficiency and particulate emissions of gasoline and ethanol blends in a turbocharged multi-cylinder direct injection engine.” International Journal of Engine Research (2019): 1468087419838393. VIII Thakur, Amit Kumar, et al. “Progress in performance analysis of ethanol-gasoline blends on SI engine.” Renewable and Sustainable Energy Reviews 69 (2017): 324-340. View Download Journal Vol – 15 No -7, July 2020 CHARACTERIZATION OF MATERIALS FOR CUSTOMIZED AFO USING ADDITIVE MANUFACTURING Authors: Gamini Suresh,Nagarjuna Maguluri,Kunchala Balakrishna, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00052 admin July 26, 2020 Abstract: Neurodegenerative conditions and compressed nerves often cause an abnormal foot drop that affects an individual gait and make it difficult to walk normally. Ankle Foot Orthosis (AFO) is the medical device which is recommended for the patients to improve the walking ability and decrease the risk of falls. Custom AFOs provide better fit, comfort and performance than pre-manufactured ones. The technique of 3D-printing is suitable for making custom AFOs. Fused deposition modelling (FDM) is a 3D-printing method for custom AFO applications with the desired resistance and material deposition rate. Generally, FDM is a thermal process; therefore materials thermal behaviour plays an important role in optimizing the performance of the printed parts. The objective of this study is to evaluate the thermal behaviour of PLA, ABS, nylon and WF-PLA filaments before manufacturing the AFO components using the FDM method. In the study, the sequence of testing materials provides a basic measuring method to investigate AFO device parts thermal stability. Thermal analysis (TG/DTG and DSC) was carried out before 3D printing is to characterize the thermal stability of each material. Keywords: Additive Manufacturing,Ankle Foot Orthosis (AFO),FusedDeposition Modelling,ThermalAnalysis, Refference: I. J. Pritchett, “Foot drop: Background, Anatomy, Pathophysiology,” Medscape Drugs, Dis. Proced., vol. 350, no. apr27_6, p. h1736, 2014. II. J. Graham, “Foot drop: Explaining the causes, characteristics and treatment,” Br. J. Neurosci. Nurs., vol. 6, no. 4, pp. 168–172, 2010. III. Y. Feng and Y. Song, “The Categories of AFO and Its Effect on Patients With Foot Impair: A Systemic Review,” Phys. Act. Heal., vol. 1, no. 1, pp. 8–16, 2017. IV. J. H. P. Pallari, K. W. Dalgarno, J. Munguia, L. Muraru, L. Peeraer, S. Telfer, and J. Woodburn” Design and additive fabrication of foot and ankle-foot orthoses”21st Annual International Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference, SFF 2010 (2010) 834-845 V. Y. Jin, Y. He, and A. Shih, “Process Planning for the Fuse Deposition Modeling of Ankle-Foot-Othoses,” Procedia CIRP, vol. 42, no. Isem Xviii, pp. 760–765, 2016. VI. R. K. Chen, Y. an Jin, J. Wensman, and A. Shih, “Additive manufacturing of custom orthoses and prostheses-A review,” Addit. Manuf., vol. 12, pp. 77–89, 2016. VII. A. D. Maso and F. Cosmi, “ScienceDirect 3D-printed ankle-foot orthosis : a design method,” Mater. Today Proc., vol. 12, pp. 252–261, 2019. VIII. B. Yuan et al., “Designing of a passive knee-assisting exoskeleton for weight-bearing,” in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2017, vol. 10463 LNAI, pp. 273–285. IX. R. Spina, B. Cavalcante, and F. Lavecchia, “Diment LE, Thompson MS, Bergmann JHM. Clinical efficacy and effectiveness of 3D printing: a systematic review.,” AIP Conf. Proc., vol. 1960, 2018. X. M. Srivastava, S. Maheshwari, T. K. Kundra, and S. Rathee, “ScienceDirect Multi-Response Optimization of Fused Deposition Modelling Process Parameters of ABS Using Response Surface Methodology ( RSM ) -Based Desirability Analysis,” Mater. Today Proc., vol. 4, no. 2, pp. 1972–1977, 2017. XI. E. Malekipour, S. Attoye, and H. El-Mounayri, “Investigation of Layer Based Thermal Behavior in Fused Deposition Modeling Process by Infrared Thermography,” Procedia Manuf., vol. 26, pp. 1014–1022, 2018. XII. A. Patar, N. Jamlus, K. Makhtar, J. Mahmud, and T. Komeda, “Development of dynamic ankle foot orthosis for therapeutic application,” Procedia Eng., vol. 41, no. Iris, pp. 1432–1440, 2012. XIII. Y. A. Jin, H. Li, Y. He, and J. Z. Fu, “Quantitative analysis of surface profile in fused deposition modelling,” Addit. Manuf., vol. 8, pp. 142–148, 2015. XIV. M. Walbran, K. Turner, and A. J. McDaid, “Customized 3D printed ankle-foot orthosis with adaptable carbon fibre composite spring joint,” Cogent Eng., vol. 3, no. 1, pp. 1–11, 2016. XV. N. Wierzbicka, F. Górski, R. Wichniarek, and W. Kuczko, “The effect of process parameters in fused deposition modelling on bonding degree and mechanical properties,” Adv. Sci. Technol. Res. J., vol. 11, no. 3, pp. 283–288, 2017. XVI. S. Farah, D. G. Anderson, and R. Langer, “Physical and mechanical properties of PLA, and their functions in widespread applications — A comprehensive review,” Adv. Drug Deliv. Rev., vol. 107, pp. 367–392, 2016. XVII. S. Wojtyła, P. Klama, and T. Baran, “Is 3D printing safe ? Analysis of the thermal treatment of thermoplastics : ABS , PLA , PET , and,” vol. 9624, no. April, 2017. XVIII. G. Cicala et al., “Polylactide / lignin blends,” J. Therm. Anal. Calorim., 2017. XIX. S. Y. Lee, I. A. Kang, G. H. Doh, H. G. Yoon, B. D. Park, and Q. Wu, “Thermal and mechanical properties of wood flour/talc-filled polylactic acid composites: Effect of filler content and coupling treatment,” J. Thermoplast. Compos. Mater., vol. 21, no. 3, pp. 209–223, 2008. XX. Y. Tao, H. Wang, Z. Li, P. Li, and S. Q. Shi, “Development and application ofwood flour-filled polylactic acid composite filament for 3d printing,” Materials (Basel)., vol. 10, no. 4, pp. 1–6, 2017. XXI. D. Lewitus, S. McCarthy, A. Ophir, and S. Kenig, “The effect of nanoclays on the properties of PLLA-modified polymers Part 1: Mechanical and thermal properties,” J. Polym. Environ., vol. 14, no. 2, pp. 171–177, 2006. XXII. H. J. Chung, E. J. Lee, and S. T. Lim, “Comparison in glass transition and enthalpy relaxation between native and gelatinized rice starches,” Carbohydr. Polym., vol. 48, no. 3, pp. 287–298, 2002. View Download Journal Vol – 15 No -7, July 2020 CFD STUDIES OF MIXING BEHAVIOR OF INERT SAND WITH BIOMASS IN FLUIDIZED BED Authors: B.J.M.Rao,K.V.N.S.Rao, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00053 admin July 26, 2020 Abstract: Agriculture deposits, which remains unused and often causes ecological problems, could play an important role as an energy source to meet energy needs in developing countries ‘ rural areas. Moreover, energy levels in these deposits are low and need to be elevated by introducing efficient operative conversion technologies to utilize these residues as fuels. In this context, the utilization of a fluidized bed innovation enables a wide range of non-uniform-sized low-grade fuels to be effectively converted into other forms of energy.This study was undertaken to evaluate the effectiveness of fluidized conversion method for transformation of agricultural by-products such as rice husk, sawdust, and groundnut shells into useful energy. The present investigation was conducted to know the mixing characteristics of sand and fuel have been found by conducting experiments with mixing ratio of rice husk (1:13), saw dust(1:5) and groundnut shells (1:12), the variation of particle movement in the bed and mixing characteristics are analyzed. The impact of sand molecule size on the fluidization speed of two biofuel and sand components is studied and recommended for groundnut shells using a sand molecule of 0.6 mm size and for rice husk, sawdust 0.4 mm sand particle size. Also, establish that the particle size of sand has a significant effect on mingling features in case of sawdust. In the next part of the investigation, the CFD simulations of the fluidized bed are done to investigate the mixing behavior of sand and biomass particles. A set of simulations are conducted by ANSYS FLUENT16; the state of the bed is the same as that of the test. The findings were presented with the volume fraction of sand and biomass particles in the form of contour plots. Keywords: Biomass,sand,mixing behavior,Volume Fraction,CFD model, Refference: I Anil Tekale, Swapna God, Balaji Bedre, Pankaj Vaghela, Ganesh Madake, Suvarna Labade (2017), Energy Production from Biomass: Review, International Journal of Innovative Science and Research Technology, Volume 2, Issue 10, ISSN No: – 2456 – 2165. II Anil Kumar, Nitin Kumar , Prashant Baredar , Ashish Shukla (2015), A review on biomass energy resources, potential, conversion and policy in India, Renewable and Sustainable Energy, Reviews 45-530-539. III Zhenglan Li, ZhenhuaXue (2015), Review of Biomass Energy utilization technology, 3rd International Conference on Material, Mechanical and Manufacturing Engineering. IV Abdeen Mustafa Omer (2011), Biomass energy resources utilisation and waste management, Journal of Agricultural Biotechnology and Sustainable Development Vol. 3(8), pp. 149 -170 V Rijul Dhingra, Abhinav Jain, Abhishek Pandey, and Srishti Mahajan (2014), Assessment of Renewable Energy in India, International Journal of Environmental Science and Development, Vol. 5, No. 5. VI Paulina Drożyner, Wojciech Rejmer, Piotr Starowicz,AndrzejKlasa, Krystyna A. Skibniewska (2013), Biomass as a Renewable Source of Energy, Technical Sciences 16(3), 211–220. VII Souvik Das, Swati Sikdar (2016), A Review on the Non-conventional Energy Sources in Indian Perspective, International Research Journal of Engineering and Technology (IRJET), Volume: 03 Issue: 02. VIII Maninder, Rupinderjit Singh Kathuria, Sonia Grover, Using Agricultural Residues as a Biomass Briquetting: An Alternative Source of Energy, IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE), ISSN: 2278-1676 Volume 1, Issue 5 (July-Aug. 2012), PP 11-15. IX H.B.Goyal, DiptenduldDeal, R.C.Saxena (2006) Bio-fuels from thermochemical conversion of renewable resources: A review, Renewable and Sustainable Energy Reviews, Volume 12, Issue 2Pages 504-517. X Digambar H. Patil, J. K. Shinde(2017) A Review Paper on Study of Bubbling Fluidized Bed Gasifier, International Journal for Innovative Research in Science & Technology, Volume 4, Issue 4 XI Neil T.M. Duffy, John A. Eaton (2013) Investigation of factors affecting channelling in fixed-bed solid fuel combustion using CFD, Combustion and Flame 160, 2204–2220. XII Xing Wu, Kai Li, Feiyue and Xifeng Zhu (2017), Fluidization Behavior of Biomass Particles and its Improvement in a Cold Visualized Fluidized, Bio Resources 12(2), 3546-3559. XIII N.G. Deen, M. Van Sint Annaland, M.A. Van der Hoef, J.A.M. Kuipers (2007), Reviewof discrete particle modeling of fluidized beds, Chemical Engineering Science 62, 28 – 44. XIV BaskaraSethupathySubbaiah, Deepak Kumar Murugan, Dinesh Babu Deenadayalan, Dhamodharan.M.I (2014), Gasification of Biomass Using Fluidized Bed, International Journal of Innovative Research in Science, Engineering and Technology, Vol. 3, Issue 2. XV Priyanka Kaushal, Tobias Pröll and Hermann Hofbauer, Modelling and simulation of the biomass fired dual fluidized bed gasifier at Guessing/Austria. XVI Dawit DiribaGuta (2012), Assessment of Biomass Fuel Resource Potential and Utilization in Ethiopia: Sourcing Strategies for Renewable Energies, International Journal of Renewable Energy Research, Vol.2, and No.1. View Download Journal Vol – 15 No -7, July 2020 AN APPROACH FOR OPTIMISING THE FLOW RATE CONDITIONS OF A DIVERGENT NOZZLE UNDER DIFFERENT ANGULAR CONDITIONS Authors: Lam Ratna Raju ,Ch. Pavan Satyanarayana,Neelamsetty Vijaya Kavya, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00054 admin July 26, 2020 Abstract: A spout is a device which is used to offer the guidance to the gases leaving the burning chamber. Spout is a chamber which has a capability to change over the thermo-compound essentials created within the ignition chamber into lively vitality. The spout adjustments over the low speed, excessive weight, excessive temperature fuel in the consuming chamber into rapid gasoline of decrease weight and low temperature. An exciting spout is used if the spout weight volume is superior vehicles in supersonic airplane machines commonly combine a few sort of a distinctive spout. Our exam is surpassed on the use of programming like Ansys Workbench for arranging of the spout and Fluent 15.0 for separating the streams inside the spout. The events of staggers for the pipe formed spouts have been seen close by trade parameters for numerous considered one of a kind edges. The parameters underneath recognition are differentiated and that of shape spout for singular terrific edges by using keeping up the gulf, outlet and throat width and lengths of joined together and diverse quantities as same. The simultaneous component and throat expansiveness are kept regular over the cases.The surprise of stun became envisioned and the effects exhibited near closeness in direction of motion of Mach circle and its appearance plans as exposed in numerous preliminary considers on advancement in pipe molded particular spouts with assorted edges four°,7°, 10°, Occurrence of stun is seen with higher special factors Keywords: Nozzle,Supersonic Rocket Engine,Divergent edges, Refference: I. Varun, R.; Sundararajan,T.; Usha,R.; Srinivasan,ok.; Interaction among particle-laden under increased twin supersonic jets, Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 2010 224: 1005. II. Pandey,K.M.; Singh, A.P.; CFD Analysis of Conical Nozzle for Mach 3 at Various Angles of Divergence with Fluent Software, International Journal of Chemical Engineering and Applications, Vol. 1, No. 2, August 2010, ISSN: 2010-0221. III. Natta, Pardhasaradhi.; Kumar, V.Ranjith.; Rao, Dr. Y.V. Hanumantha.; Flow Analysis of Rocket Nozzle Using Computational Fluid Dynamics (Cfd), International Journal of Engineering Research and Applications (IJERA), ISSN: 2248-9622,Vol. 2, Issue five, September- October 2012, pp.1226-1235. IV. K.M. Pandey, Member IACSIT and A.P. Singh. K.M.Pandey, Member, IACSIT and S.K.YadavK.M.Pandey and S.K.Yadav, ―CFD Analysis of a Rocket Nozzle with Two Inlets at Mach2.1, Journal of Environmental Research and Development, Vol 5, No 2, 2010, pp- 308-321. V. Shigeru Aso, ArifNur Hakim, Shingo Miyamoto, Kei Inoue and Yasuhiro Tani “ Fundamental examine of supersonic combustion in natural air waft with use of surprise tunnel” Department of Aeronautics and Astronautics, Kyushu University, Japan , Acta Astronautica 57 (2005) 384 – 389. VI. P. Padmanathan, Dr. S. Vaidyanathan, Computational Analysis of Shockwave in Convergent Divergent Nozzle, International Journal of Engineering Research and Applications (IJERA), ISSN: 2248-9622 , Vol. 2, Issue 2,Mar-Apr 2012, pp.1597-1605. VII. Adamson, T.C., Jr., and Nicholls., J.A., “On the shape of jets from Highly below improved Nozzles into Still Air,” Journal of the Aerospace Sciences, Vol.26, No.1, Jan 1959, pp. Sixteen-24. VIII. Lewis, C. H., Jr., and Carlson, D. J., “Normal Shock Location in underneath increased Gas and Gas particle Jets,” AIAA Journal, Vol 2, No.4, April 1964, pp. 776-777. Books IX. Anderson, John D.Jr.; Modern Compressible Flow with Historical Perspective, Third edition, 2012 X. Versteeg. H.; Malalasekra.W.; An Introduction to Computational Fluid Dynamics The Finite Volume Method, Second Edition,2009. XI. H.K.Versteeg and W.Malala Sekhara, “An introduction to Computational fluid Dynamics”, British Library cataloguing pub, 4th version, 1996. XII. Lars Davidson, “An introduction to turbulenceModels”, Department of thermo and fluid dynamics, Chalmers college of era, Goteborg, Sweden, November, 2003. XIII. Karna s. Patel, “CFD analysis of an aerofoil”, International Journal of engineering studies,2009. XIV. K.M. Pandey, Member IACSIT and A.P. Singh “CFD Analysis of Conical Nozzle for Mach 3 at Various Angles of Divergence with Fluent Software,2017. XV. P. Parthiban, M. Robert Sagayadoss, T. Ambikapathi, Design And Analysis Of Rocket Engine Nozzle by way of the usage of CFD and Optimization of Nozzle parameters, International Journal of Engineering Research, Vol.Three., Issue.5., 2015 (Sept.-Oct.). View Download Journal Vol – 15 No -7, July 2020 DESIGN OPTIMIZATION OF DRIVE SHAFT FOR AN AUTOMOBILE APPLICATIONS Authors: Govindarajulu Eedara,P. N. Manthru Naik, DOI NO: https://doi.org/10.26782/jmcms.2020.07.00055 admin July 26, 2020 Abstract: The driveshaft is a mechanical instrument that is used in automobiles. The other name of the drive shaft is driveshaft is prop shaft. It has one long cylindrical structure consist of two universal joints. By using the driveshaft it transfers the rotary motion to the differential by using the helical gearbox. By using this rotary motion the rare wheels will run. The 3dimensional Model of automobile drive Shaft is designed using CATIA parametric which enables product development processes and thereby brings about an optimum design. Now a day’s steel is using the best material for the driveshaft.In this paper replacing the composite materials (Kevlar, e-glass epoxy) instead of steel material and itreduces a considerable amount of weight when compared to the conventional steel shaft. The composite driveshaft have high modulus is designed by using CATIA software and tested in ANSYS for optimization of design or material check and providing the best datebook Keywords: The driveshaft ,CATIA,automobile,steel,composite materials,ANSYS,Kevla,e-glass epoxy, Refference: I A.R. Abu Talib, Aidy Ali, Mohamed A. Badie, Nur Azienda Che Lah, A.F. Golestaneh Developing a hybrid, carbon/glass-fiber-reinforced, epoxy composite automotive driveshaft, Material and Design, volume31, 2010, pp 514 – 521 II ErcanSevkat, Hikmet Tumer, Residual torsional properties of composite shafts subjected to impact Loadings, Materials, and design, volume – 51, 2013, pp -956-967. III H. Bayrakceken, S. Tasgetiren, I. Yavuz two cases of failure in the power transmission system on vehicles: A Universal joint yoke and a drive shaft, volume-14,2007,pp71. IV H.B.H. Gubran, Dynamics of hybrid shafts, Mechanics Research communication, volume – 32, 2005, pp – 368-374. V Shaw D, Simitses DJ, SheinmanI. Imperfection sensitivity of laminated cylindrical shells in torsion and axial compression. ComposStruct 1985; 4(3) pp:35–60. View Download Journal Vol – 15 No -7, July 2020 EXPERIMENTAL EVALUATION OF AN SI ENGINE USING E10 EQUIVALENT TERNARY GASOLINE- ALCOHOL BLENDS." JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES 15, no. 7 (July 26, 2020). http://dx.doi.org/10.26782/jmcms.2020.07.00056.

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