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Artículos de revistas sobre el tema "Ultra sonic range finder"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 1 de febrero de 2022

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1

., Sneha Punia. "ULTRA SONIC RANGE FINDING FOR DISTANCE MEASURING IN COAL MINING." International Journal of Research in Engineering and Technology 03, no. 11 (2014): 313–15. http://dx.doi.org/10.15623/ijret.2014.0311051.

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2

Zhang, Yuan, Shu Tang Liu, and Yue Liu. "Ranging Technology for Accurate Localization in Short-Range Wireless Networks – A Comparative Study." Key Engineering Materials 467-469 (February 2011): 713–17. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.713.

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Localization capability is usually required and designed for wireless networks. Although many localization algorithms have been proposed, the refinement issue of guaranteeing the location accuracy is still in its early stage of development. This paper compares different ranging technologies for localization measurement. Specifically, we analyze infrared, ultra sonic, radio frequency and ultra wideband as different choices. After a comparative study the paper recommends ultra wideband as the best candidate for accurate range-based localization system in the short-range wireless network scenario
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3

Fu, Yulu, Ran Liu, Hua Zhang, Gaoli Liang, Shafiq ur Rehman, and Lixiang Liu. "Continuously tracking of moving object by a combination of ultra-high frequency radio-frequency identification and laser range finder." International Journal of Distributed Sensor Networks 15, no. 7 (2019): 155014771986099. http://dx.doi.org/10.1177/1550147719860990.

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Due to the unique and contactless way of identification, radio-frequency identification is becoming an emerging technology for objects tracking. As radio-frequency identification does not provide any distance or bearing information, positioning using radio-frequency identification sensor itself is challenging. Two-dimensional laser range finders can provide the distance to the objects but require complicated recognition algorithms to acquire the identity of object. This article proposes an innovative method to track the locations of dynamic objects by combining radio-frequency identification a
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4

Niedermeier, N., A. Held, T. Müller, et al. "Mass deposition fluxes of Saharan mineral dust to the tropical northeast Atlantic Ocean: an intercomparison of methods." Atmospheric Chemistry and Physics Discussions 12, no. 12 (2012): 33025–81. http://dx.doi.org/10.5194/acpd-12-33025-2012.

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Abstract. The aim of this study is to determine the mass deposition flux of mineral dust to the tropical northeast Atlantic Ocean at the Cape Verde Atmospheric Observatory (CVAO) on the island Sao Vicente for January 2009. Five different methods were applied to estimate the deposition flux, using different meteorological and microphysical measurements, remote sensing, and regional dust transport simulations. The set of observations comprises micrometeorological measurements with an ultra-sonic anemometer and profile measurements using 2-D anemometers at two different heights, and microphysical
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5

Rana, Tahir, and Nazia Nazar. "COMPARISON OF SHORT WAVE DIATHERMY TO ULTRA-SONIC THERAPY FOR DECREASING PAIN AND INCREASING RANGE OF MOTION IN ADHESIVE CAPSULITIS." Journal of Riphah College of Rehabilitation Sciences 8, no. 1 (2020): 6. http://dx.doi.org/10.5455/jrcrs.2020080103.

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6

Mukwaya, Vincent, Weidong Yu, Rabie AM Asad, and Hajo Yagoub. "An environmentally friendly method for the isolation of cellulose nano fibrils from banana rachis fibers." Textile Research Journal 87, no. 1 (2016): 81–90. http://dx.doi.org/10.1177/0040517515622155.

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Cellulose nano fibrils (CNFs) were isolated from banana rachis bran using enzyme hydrolysis with subsequent ultra-sonic treatment. The CNFs and bran were characterized by particle size distribution (only the CNFs), X-ray diffraction (XRD), Thermogravimetric analysis (TGA) and Fourier-transform infrared spectroscopy; the morphology of the banana rachis fiber and CNFs was observed using scanning electron microscopy and transmission electron microscopy, respectively. The furnished nano fibrils had an average diameter of 14.02 ± 2.10 nm and length of 619.6 ± 90.7 nm. The aspect ratio of the CNFs i
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7

Niedermeier, N., A. Held, T. Müller, et al. "Mass deposition fluxes of Saharan mineral dust to the tropical northeast Atlantic Ocean: an intercomparison of methods." Atmospheric Chemistry and Physics 14, no. 5 (2014): 2245–66. http://dx.doi.org/10.5194/acp-14-2245-2014.

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Abstract. Mass deposition fluxes of mineral dust to the tropical northeast Atlantic Ocean were determined within this study. In the framework of SOPRAN (Surface Ocean Processes in the Anthropocene), the interaction between the atmosphere and the ocean in terms of material exchange were investigated at the Cape Verde atmospheric observatory (CVAO) on the island Sao Vicente for January 2009. Five different methods were applied to estimate the deposition flux, using different meteorological and physical measurements, remote sensing, and regional dust transport simulations. The set of observations
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8

Freiherr, Greg. "Back to the Sound Barrier." Mechanical Engineering 138, no. 03 (2016): 36–41. http://dx.doi.org/10.1115/1.2016-mar-2.

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This article explores efforts that are being put into developing a business jet called AS2 and various challenges in developing the same. Aerion’s 12-seat tri-engine AS2, unveiled in spring 2014, is designed to have a range up to 5000 nautical miles; reach 51,000 feet; and cruise at speeds between Mach 1.2 and Mach 1.6. About the time it is ready to fly commercially, possibly as early as 2023, the market could support annual sales of 30 supersonic business jets. NASA and Lockheed Martin have been exploring a variety of options for quieting sonic booms. In its Strategic Implementation Plan, rel
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9

R., Naren Shankar, Ganesan V.G., Dilip Raja N., Sathish Kumar K., and Vijayaraja K. "Numerical investigation of critical lip thickness of subsonic co-flowing jet." Aircraft Engineering and Aerospace Technology 93, no. 7 (2021): 1193–203. http://dx.doi.org/10.1108/aeat-10-2020-0225.

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Purpose The effect of increasing lip thickness (LT) and Mach number on subsonic co-flowing Jet (CFJ) decay at subsonic and correctly expanded sonic Mach numbers has been analysed experimentally and numerically in this study. This study aims to a critical LT below which mixing enhances and above which mixing inhibits. Design/methodology/approach LT is the distance, separating the primary nozzle and the secondary duct, present in the co-flowing nozzle. The CFJ with LT ranging from 2 mm to 150 mm at jet exit Mach numbers of 0.6, 0.8 and 1.0 were studied in detail. The CFJ with 2 mm LT is used for
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10

K.K., Sabarikanth. "Pothole Dection Syatem in Vehicle." Regular issue 10, no. 8 (2021): 127–31. http://dx.doi.org/10.35940/ijitee.h9249.0610821.

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In India major road accident is based on potholes. To identify this potholes and humps in roads may reduces the road accident and also reduces the damages in cars and bike. To identify the holes and humps or speed breakers, the ultra sonic sensor, display board and buzzer also used in it. Project is mainly used in the prototype model of the vehicle which has the capable to find holes and humps in the road. When the vehicle identify the holes and hump it started showing the distance of obstacles, once the distance of obstacles reduced to 10m range the buzzer gives the alarm signals to drives th
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11

Carnevale, Marco, Andrea Collina, and Tim Peirlinck. "A Feasibility Study of the Drive-By Method for Damage Detection in Railway Bridges." Applied Sciences 9, no. 1 (2019): 160. http://dx.doi.org/10.3390/app9010160.

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Damage identification and localization in railway bridges is a widely studied topic. Strain, displacement, or acceleration sensors installed on the bridge structure are normally used to detect changes in the global behavior of the structure, whereas approaches like ultra-sonic testing, acoustic emission, and magnetic inspection are used to check a small portion of structure near localized damage. The aim of this paper is to explore another perspective for monitoring the structural status of railway bridges, i.e., to detect structural damage from the dynamic response of the train transiting the
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12

Chaiwatyothin, Sudarat, Wittawat Ratanathavorn, Tharapong Vitidsant та Prasert Reubroycharoen. "LPG Synthesis from Syngas over Cu/ZnO-Pd-β Catalysts Prepared by Ultrasonic Spray Pyrolysis". Key Engineering Materials 659 (серпень 2015): 252–56. http://dx.doi.org/10.4028/www.scientific.net/kem.659.252.

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Synthesis of nanoCu/ZnO catalyst for LPG production was prepared by ultrasonic spray pyrolysis (USP). Hollow spherical particles were obtained by USP technique using an aqueous solution of Cu (NO3)3.6H2O and Zn (NO3)3.3H2O with different concentration of 0.05, 0.1 and 0.5 molar under the pyrolysis temperatures of 600, 700 and 800°C. Mists of the solution were generated from the precursor solution by ultra sonic vibrators at frequency of ~1.7 MHz. The physicochemical properties of catalysts were characterized by X-ray diffraction, temperature-programmed reduction, scanning electron microscope,
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13

Salih, Ekbal Mohammed Saeed, and Baraa H. Al Khaqani. "Effect of Laser Surface Treatment on Transition Temperature of Ni/Ti SMAS." International Journal of Heat and Technology 39, no. 1 (2021): 213–18. http://dx.doi.org/10.18280/ijht.390123.

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It is well established that SMAs have a great important as: engineering and biomaterial applications, because of unique properties that had as well as, good biocompatibility. however, duo to its possible corrosion in physiological solution, dissolution of toxic Ni might be happening. Several studies have been carried out to improve the stability of the passive protective film of Tio2 and prevent the Ni ion relies out of NiTi. Surface treatment is one of these methods or techniques such as, ion implantation, plasma electro polishing, passivation, ultra-sonic treatment and laser treatment, most
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14

Zhan, Y. "Velocity anomalies and out-of-plane reflections in Barnicarndy 1, Canning Basin." APPEA Journal 61, no. 1 (2021): 271. http://dx.doi.org/10.1071/aj20082.

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Barnicarndy 1 was drilled as a stratigraphic well and penetrated 2585m of clastic sedimentary rocks overlying an angular unconformity composed of Proterozoic dolomite basement near SSE end of the eponymous graben (previously known as the Waukarlycarly Embayment) of the Canning Basin. The post-drilling data exhibited several types of anomalies and inconsistencies, including ultra-slow velocity of the vertical seismic profile (VSP) within the top 210m, substantially high velocity from 210 to 1390m, poor synthetic–seismic correlation, and discrepancies between the prognosis and actual depths. The
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15

Jones, S. K., D. Famulari, C. F. Di Marco, et al. "Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements." Atmospheric Measurement Techniques 4, no. 10 (2011): 2179–94. http://dx.doi.org/10.5194/amt-4-2179-2011.

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Abstract. Managed grasslands are known to be an important source of N2O with estimated global losses of 2.5 Tg N2O-N yr−1. Chambers are to date the most widely used method to measure N2O fluxes, but also micrometeorological methods are successfully applied. In this paper we present a comparison of N2O fluxes measured by non-steady state chambers and eddy covariance (EC) (using an ultra-sonic anemometer coupled with a tunable diode laser) from an intensively grazed and fertilised grassland site in South East Scotland. The measurements were taken after fertilisation events in 2003, 2007 and 2008
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16

Jones, S. K., D. Famulari, C. F. Di Marco, et al. "Nitrous oxide emissions from managed grassland: a comparison of eddy covariance and static chamber measurements." Atmospheric Measurement Techniques Discussions 4, no. 1 (2011): 1079–112. http://dx.doi.org/10.5194/amtd-4-1079-2011.

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Abstract. Managed grasslands are known to be an important source of N2O with estimated global losses of 2.5 Tg N2O-N yr−1. Chambers are the most widely used method to measure N2O fluxes, but also micrometeorological methods have successfully been applied. In this paper we present a comparison of N2O fluxes measured by non-steady state chambers and eddy covariance (EC) (using an ultra-sonic anemometer coupled with a tunable diode laser) methods from an intensively grazed and fertilised grassland site in South East Scotland. The measurements were taken after fertilisation events in 2003, 2007 an
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17

"An Ultra Low Noise Optoelectronic Module Enables an in Situ Range-Finder Probe to Locate a Neurovascular Bundle in Dental Implant Surgery." ECS Meeting Abstracts, 2014. http://dx.doi.org/10.1149/ma2014-01/40/1482.

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18

Phillips, Maggi. "Diminutive Catastrophe: Clown’s Play." M/C Journal 16, no. 1 (2013). http://dx.doi.org/10.5204/mcj.606.

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IntroductionClowns can be seen as enacting catastrophe with a small “c.” They are experts in “failing better” who perhaps live on the cusp of turning catastrophe into a metaphorical whirlwind while ameliorating the devastation that lies therein. They also have the propensity to succumb to the devastation, masking their own sense of the void with the gestures of play. In this paper, knowledge about clowns emerges from my experience, working with circus clowns in Circus Knie (Switzerland) and Circo Tihany (South America), observing performances and films about clowns, and reading, primarily in E
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