Готові списки джерел за темами / Dual pulse laser shock peeing

Добірка наукової літератури з теми "Dual pulse laser shock peeing"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Dual pulse laser shock peeing"

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Vishwaja, Uppalapati, Sindhuja Panthangi, Chavva Lakshmi Charan Reddy, Mattapudi Basavaiah Babu, and Srivalli Podili. "Novel sweeps technology in endodontics — A review." IP Indian Journal of Conservative and Endodontics 6, no. 3 (September 15, 2021): 134–42. http://dx.doi.org/10.18231/j.ijce.2021.030.

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Анотація:
A novel SWEEPS® Er:YAG laser modality was recently introduced with the purpose of improving the disinfecting and activating efficacy of SSP laser assisted endodontic procedures by permitting the generation of primary and secondary shock waves throughout the complicated root canal system. The SWEEPS method greatly improves the efficacy of removing debris and medications from the root canal system. In the most current Er:YAG dental laser devices, the complimentary combination of SSP and SWEEPS® technology constitutes a distinct solution for modern endodontics. The aim of this review is to: (i) Offer the most relevant data on a novel SWEEPS (shock wave enhanced emission photoacoustic streaming) technology, its relative advantages, with an emphasis on single-pulse SSP laser-assisted irrigation and dual pulse SWEEPS technology; (ii) Provide recommendations for the use of SWEEPS technology in Endodontics based on current evidence; (iii) Highlight the areas in which more research is required.
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2

Glenar, David A., and David K. Lewis. "Tunable Diode Laser Quantification of Isomeric Partially Deuterated Cyclobutanes and Ethenes." Applied Spectroscopy 43, no. 2 (February 1989): 283–88. http://dx.doi.org/10.1366/0003702894203219.

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A specially designed tunable diode laser (TDL) absorption spectrometer which operates near 900 and 1300 cm−1 has been constructed in order to identify and measure very low concentrations of product gases extracted from a single-pulse shock-tube experiment. The ultra-high-frequency resolution of the TDL spectrometer (5 to 10 MHz) shows the rotational fine structure in an absorption spectrum, clearly distinguishing between isomers of the same compound. The spectrometer features dual-beam detection in order to simultaneously acquire source and reference gas spectra for unambiguous labeling of the product gases, and rapid sweep averaging, which minimizes the effects of low-frequency mechanical vibrations and achieves very high signal-to-noise ratio. Cis and trans isomers of 1,2-d2-cyclobutane were detected and measured in quantities of shock-tube products as small as 75 cm3-Torr. Several conformations of deuterated ethenes were also detected in samples smaller than 1 cm3-Torr.
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3

An, Bin, Zhenguo Wang, Leichao Yang, Ge Wu, Jiajian Zhu, and Xipeng Li. "Experimental investigation of the shock loss and temporal evolution of hot plume resulting from dual-pulse laser-induced breakdown in quiescent air." Journal of Applied Physics 122, no. 19 (November 21, 2017): 193301. http://dx.doi.org/10.1063/1.4990096.

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4

Jeandin, Michel, Dimitris Christoulis, Francois Borit, Marie Helene Berger, S. Guetta, G. Rolland, Vincent Guipont, et al. "Lasers and Thermal Spray." Materials Science Forum 638-642 (January 2010): 174–81. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.174.

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Анотація:
Basically, thermal spray and laser processing can be considered as half brothers since they show many common features due to the use of a (more or less) high-energy source for both. Their combination can therefore be very fruitful and prominent to achieve coatings, which results in their most recent and advanced applications. In the materials processing development story, the laser will thus have moved from cutting to coating. This keynote presentation focuses on the recently-developed coupling of laser processing to cold spray). In this dual process, a cold spray gun is combined to a laser head in a single device, e.g. on a robot. Series of coating experiments using various laser irradiation conditions, primarily pulse frequency, were carried out for Al-based and Ni-based alloys. Laser pre-treatment of the substrate just prior to cold spray, was shown to be beneficial for adhesion of cold-sprayed coatings. Adhesion improvement was exhibited and studied from LASATesting (LASAT for “LAser Shock Adhesion Test”). Incidentally, through LASAT also, the role of lasers in the development of thermally-sprayed coatings can be considered as major. Results are discussed in the light of a TEM (Transmission Electron Microscope) study of the coating-substrate interface with and without laser pre-treatment.
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Mehrad, H., and H. Ahmadi Noubari. "Combination thrombolytic therapy of embolic artery using B- mode ultrasound- guided extracorporeal focused low- level confocal dual pulse electrohydraulic shock wave and intracorporeal catheter- based Q-switched Nd: YAG laser." Atherosclerosis 331 (August 2021): e263. http://dx.doi.org/10.1016/j.atherosclerosis.2021.06.805.

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Mehrad, H., and L. Kazemi. "Inhibition of neoatherosclrotic restenosis after laser angioplasty, using paclitaxel administration accompanied by 5- aminolevulinic acid- mediated B- mode ultrasound- guided extracorporeal focused low- level confocal dual pulse electrohydraulic shock wave sonodynamic therapy." Atherosclerosis 331 (August 2021): e285. http://dx.doi.org/10.1016/j.atherosclerosis.2021.06.876.

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Mehrad, H., and H. Ahmadi Noubari. "Sonodynamic therapy after catheter- based ARF excimer laser angioplasty of carotid artery, using lipid- based encapsulated docetaxel nanoparticles- assisted 5- aminolevulinic acid- mediated B- mode ultrasound- guided focused low- level confocal dual pulse electrohydraulic shock wave." Atherosclerosis 331 (August 2021): e266-e267. http://dx.doi.org/10.1016/j.atherosclerosis.2021.06.816.

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8

Grünbein, Marie Luise, Alexander Gorel, Lutz Foucar, Sergio Carbajo, William Colocho, Sasha Gilevich, Elisabeth Hartmann, et al. "Effect of X-ray free-electron laser-induced shockwaves on haemoglobin microcrystals delivered in a liquid jet." Nature Communications 12, no. 1 (March 15, 2021). http://dx.doi.org/10.1038/s41467-021-21819-8.

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AbstractX-ray free-electron lasers (XFELs) enable obtaining novel insights in structural biology. The recently available MHz repetition rate XFELs allow full data sets to be collected in shorter time and can also decrease sample consumption. However, the microsecond spacing of MHz XFEL pulses raises new challenges, including possible sample damage induced by shock waves that are launched by preceding pulses in the sample-carrying jet. We explored this matter with an X-ray-pump/X-ray-probe experiment employing haemoglobin microcrystals transported via a liquid jet into the XFEL beam. Diffraction data were collected using a shock-wave-free single-pulse scheme as well as the dual-pulse pump-probe scheme. The latter, relative to the former, reveals significant degradation of crystal hit rate, diffraction resolution and data quality. Crystal structures extracted from the two data sets also differ. Since our pump-probe attributes were chosen to emulate EuXFEL operation at its 4.5 MHz maximum pulse rate, this prompts concern about such data collection.
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Тези доповідей конференцій з теми "Dual pulse laser shock peeing"

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Cheng, Gary J., Daniel Pirzada, Xin Ai, and Ben Li. "Numerical Simulation on Short Pulsed Laser Heating of Semiconductor Thin Films: The Case of GaAs." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16214.

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Анотація:
The results of numerical simulation of heat transfer phenomena in GaAs thin films irradiated by a pulsed laser are presented. A numerical algorithm involving a discontinuous Galerkin finite element method for the solution of hyperbolic heat conduction is used to solve the dual-phase-lag heat conduction equation The effects of different process parameters on heat propagation are analyzed. The heat conduction mode after pulsed laser irradiation is strongly dependent upon the incident laser energy density, film thickness and pulse duration. The heat transfer behavior for nano-, pico- and femto- second pulses has been studied and compared. A wave-type heat transfer phenomena was observed when pulse duration is of the order of relaxation time of the material being heated. It was found that for sub-picosecond pulses, the heat transfer occurs only by a thermal shock wave.
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2

Bag, Swarup, and M. Ruhul Amin. "Simulation Based Study on Ultra-Short Pulse Laser Welding of Dissimilar Materials Expending Phase Lag Influence." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70068.

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Анотація:
In this work, the thermal simulation of dissimilar fusion welding system is demonstrated by considering the phase lag effects in ultra-short pulse laser source. When the pulse duration is comparable with the electron relaxation time, the hyperbolic effect cannot be neglected in heat transfer analysis due to femtosecond laser. The non-Fourier effect is considered for heat transfer analysis assuming finite delay in development of temperature within the body. This delay is represented in terms of relaxation times connected to heat flux and temperature gradient. In the present work, the simulation has been proposed by developing 3D finite element based heat transfer model using dual phase lag effect. Since the experimental basis of transient temperature distribution in ultra-short pulse laser is extremely difficult or nearly impossible, the model results have been validated with literature reported results. The model has been used further for the simulation of temperature distribution in femtosecond fiber laser welding of dissimilar aluminum alloy and stainless steel. The results in terms of computed isotherm are compared with experimentally evaluated weld pool geometry for dissimilar materials from independent literature. The influence of other characteristic parameters like pulse frequency, pulse width and relaxation times are assessed for this simulation based study which will effectively reduce the costly experimental effort for differential influence of process parameters. A clear guideline of geometric shape and size of weld pool geometry and peak temperature of the welding system with reference to predictable laser parameters are the effective output of this simulation based study. It was observed that the peak temperature reached in a very short interval of time, in the order of nano-seconds. Such high heating or cooling rate impacts on the microstructural changes of the welded joint. In order to reach certain temperature, multiple pulses are required in the material processing of either very thin film or microwelding to keep the thermal shock distortion as low as possible.
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