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Littérature scientifique sur le sujet « Nd-YAG lasers Effect of noise on »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 1 février 2022

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Articles de revues sur le sujet "Nd-YAG lasers Effect of noise on"

Kibria, G., B. Doloi, and B. Bhattacharyya. "Parametric Study and Optimization of Nd: YAG Laser Micro-Turning Process of Different Grade of Alumina Ceramics Based on Taguchi Methodology." International Journal of Surface Engineering and Interdisciplinary Materials Science 2, no. 1 (January 2014): 15–46. http://dx.doi.org/10.4018/ijseims.2014010102.

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The present paper addresses an investigation on the effect of process parameters during Nd:YAG laser micro-turning operation of different grade of alumina (Al2O3) ceramic materials. Considering different levels of various process parameters i.e. laser beam average power, pulse frequency, workpiece rotational speed and Y feed rate, Taguchi method based experimental design has been used to construct the set of experiments. The same set of experiments has been utilized to machine 10 mm diameter cylindrical workpiece made of different grades of Alumina ceramics i.e. K60 and K80. Surface roughness

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Journal, Baghdad Science. "Study The effect of central ion to the dithene complexes on spectral shifting of saturable absorber band." Baghdad Science Journal 8, no. 2 (June 12, 2011): 465–72. http://dx.doi.org/10.21123/bsj.8.2.465-472.

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In this work dithine complexes prepared from dithiol benzil ligand and central ion to the Ni,Pd,Pt, element the ligand and complexes have been investigated using FTIR spectrophotometer and uv-vis-NIR spectral reigns show higher intensity represents the ?-?* transition in the chromopher cycle .These absorption which appear in visible and near IR spectral regions ,According to the complexes of one group ,the spectral shifting due to the change of central ion has been found to be related to atomic number of central ion .This shifting is increased while decreasing the central ion atom number These

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Gueorgieva, Tzvetelina G., and Raina T. Gergova. "INVESTIGATION OF ANTIBACTERIAL ACTIVITY OF ND: YAG - LASER AND STANDARD ENDODONTIC TREATMENT." Journal of IMAB - Annual Proceeding (Scientific Papers) 27, no. 2 (May 24, 2021): 3736–40. http://dx.doi.org/10.5272/jimab.2021272.3736.

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Introduction: The microbial infection is one of the main causes of the dental pulp and periodontal diseases. Previously used methods for its elimination are not fully effective, and often some microorganisms in root canals (RC) remain unaffected after treatment. Another modern method for disinfection of root canal system is laser disinfection. Different types of lasers are used - Nd: YAG, Er: YAG, Diode laser. Purpose: The purpose of our study is to compare the antibacterial activity of ND: YAG laser and conventional endodontic therapy in the treatment of infected root canals. Materials and me

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Dagenais, D. M., K. P. Koo, and A. Dandridge. "Demonstration of low-frequency intensity noise reduction for fiber sensors powered by diode-pumped Nd-YAG lasers." IEEE Photonics Technology Letters 4, no. 5 (May 1992): 519–20. http://dx.doi.org/10.1109/68.136507.

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Mohammed, Muneer Khan, Abdulrahman Al-Ahmari, and Usama Umer. "Assessment of Direct Laser Writing using Nd YAG Lasers for Microfluidic Applications." International Journal of Manufacturing, Materials, and Mechanical Engineering 5, no. 2 (April 2015): 44–58. http://dx.doi.org/10.4018/ijmmme.2015040103.

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The rapid growth in the use of Micro/Nano products in variety of industries such as Micro electromechanical systems (MEMS), microelectronics, Biomedical/Bio-MEMS, automotive (motion sensors), telecommunications etc, has demanded new micro manufacturing methods. The challenge with the manufacturing of Microfluidic devices/biochips is that they often make use of broad range of materials within a single chip, making it difficult to manufacture these devices with conventional photolithographic based techniques. Laser processing of materials has proved to be an important tool for the development of

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Lippert, Burkard M., and Jochen A. Werner. "Comparison of Carbon Dioxide and Neodymium: Yttrium-Aluminum-Garnet Lasers in Surgery of the Inferior Turbinate." Annals of Otology, Rhinology & Laryngology 106, no. 12 (December 1997): 1036–42. http://dx.doi.org/10.1177/000348949710601207.

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At the Department of Otorhinolaryngology—Head and Neck Surgery of the University of Kiel, 533 patients with hyperplastic inferior turbinates were treated between 1987 and 1994 with various carbon dioxide (CO2) and neodymium:yttrium-aluminum-garnet (Nd:YAG) laser techniques. We report on the therapeutic results of both types of laser turbinectomy and compare their long-term results with those of submucosal diathermy. Among the different techniques, we preferred the following approaches. The CO2 laser technique involved the application of a few laser spots (laser energy density 6,100 J/cm2 per l

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A.alkarem A.albaqi1, Marwan, Awatef Saber Jasem1, and Adnan Fathel A.azawai2. "The Influence of molecular Effects on Laser Nd:YAG and Diode on Trichophyton Rubrum fungi using RAPD marker." Tikrit Journal of Pure Science 24, no. 6 (November 3, 2019): 117. http://dx.doi.org/10.25130/j.v24i6.896.

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This study was carried out to assess the morphological and molecular effects of the Nd: yag and Diode (semiconductor) lasers on Trichophyton rubrum Fungi using RAPD marke . Sixty samples of skin patches, nail clippings and parts of hair were collected from infected patients of both sexes (34 males and 26 females) for the age group (1-60) year of patients who have attended to Tikrit Teaching Hospital. The T.rubrum fungi was the most common among the skin fungi, T.rubrum radiated by using two lasers: the Nd: yag laser with a wavelength (530) nm and energy (300, 500, 700) mJ and for two times exp

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Park, Chan, and Sang Wook Rhee. "The effect of combined application of argon and Nd-YAG lasers on iridectomy in rabbits." Korean Journal of Ophthalmology 3, no. 2 (1989): 47. http://dx.doi.org/10.3341/kjo.1989.3.2.47.

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Al-doori1, Aidah Abd, Awatef Saber Jasem1, and Adnan F. AL-Azzawie2. "Effects of Nd:Yag Laser on some virulence factor genes of Pseudomonas aeruginosa bacteria." Tikrit Journal of Pure Science 25, no. 2 (March 17, 2020): 86. http://dx.doi.org/10.25130/j.v25i2.962.

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The aim of this study was to assess effects of the 532nm Nd-yag laser on the genes of Tox A, Exo S, and Opr L, of Pseudomonas aeruginosa (P. aeruginosa) bacteria isolated from clinical (wounds, burns, otitis media) and environmental (water, soil) samples. Clinical samples were collected from patients coming to Saladdin General Hospital from wound, burns and middle ear infections while environmental samples were extracted from water and soil for Saladdin General Hospital . Bacterial samples irradiated by Nd-Yag laser with wavelength of 532 nm using energies (300mj,500mj) with (15 and 25 sec) an

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Yaniv, Eitan, Tuvia Hadar, Jacob Shvero, Rami Tamir, and Ben Nageris. "KTP/532 YAG Laser Treatment for Allergic Rhinitis." American Journal of Rhinology & Allergy 23, no. 5 (September 2009): 527–30. http://dx.doi.org/10.2500/ajra.2009.23.3346.

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Background The purpose of this study was to investigate the efficacy of the KTP/532 YAG laser to reduce nasal congestion and discharge in patients with allergic rhinitis. Methods Forty-eight patients with symptoms of allergic rhinitis were treated with the KTP/532 laser. All had positive skin tests for common allergens. Treatments were provided on an ambulatory basis in one to three sessions under local anesthesia with lidocaine nose spray. Outcome was determined by daily symptom reports and regular endoscopy examination and interviews for 12 months. Results Treatment was very well tolerated.

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Thèses sur le sujet "Nd-YAG lasers Effect of noise on"

Hill, Timothy J. "Interference of intensity noise in a multimode Nd:YAG laser." Title page, abstract and contents only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phh6484.pdf.

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Includes bibliographical references (leaves 151-163). Investigates the behaviour of the intensity noise in a multimode Nd:YAG laser. The collective modes of oscillation are excited by broadband ambient noise. Because the phase of the excitation is unknown, a cross spectral technique to measure the antiphase dynamics directly and form a picture of the intensity noise interference for two to five mode operation is developed. For three mode operation, the contributions of the longitudinal modes to collective modes is measured.

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Zhang, Tao. "Laser surface hardening of AISI 1518 alloy steel." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/723.

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The laser surface hardening process will enhance the hardness profile of automotive components and ensure better process control and predictability of quality as compared to the conventional hardening processes. A 2KW Nd-YAG laser system was used to harden the surface of alloy steel with various process parameters (laser power, focal spot diameter and beam velocity). The results (microhardness, microstructure change and residual stress distribution) were measured and analyzed with Vickers microhardness tester, optical/electron microscope and hole-drilling residual stress equipment. Statistical

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Stamatescu, Laurentiu. "Antiphase dynamics in solid state lasers with Fabry-Perot cavity / by Laurentiu Stamatescu." 2003. http://hdl.handle.net/2440/22000.

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Bibliography: leaves 154-156.<br>156 leaves : ill. (some col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>This thesis describes the construction of a low-power end pumped Nd:YAG laser and the subsequent theoretical and experimental investigation of the antiphase dynamics exhibited by the laser. The end pumped laser was modelled by extending the classical model of Tang Statz deMars to non-uniform pump along the active medium. The anomalous threshold behaviour of the laser, where modes with lower gain can sup

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Ho, Chia Yin, and 何佳音. "Effect of CO2 and Nd-YAG lasers irradiation on the electrical impedance of dentine." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/10647243164672394833.

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Chapitres de livres sur le sujet "Nd-YAG lasers Effect of noise on"

Ohshiro, Toshio. "A Comparative Study of the Wavelength Dependent Effect of the Argon, Nd: YAG and CO2 Lasers in ddY Mouse Skin." In LASER Optoelectronics in Medicine, 550–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-72870-9_140.

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Actes de conférences sur le sujet "Nd-YAG lasers Effect of noise on"

Nowicki, Natalie L. "Effects of Density on Mixing of Low Reynolds Number Vertical Jets." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16353.

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Laser sheet smoke visualization experiments were performed on vertical air/helium jets to quantify the effects of low density driven bursts on the jet structure and entrainment. The parameters of relative jet density, S, and jet exit Reynolds number, Re, are of most importance in determining the bursting. Previous research has shown that vertical jets of S ≤ 0.5, in a range of Rej = 1300 – 2500, display strong side ejections due to the baroclinic instability in the strained vorticity sheet between the primary torroidal vortices. The objective of this work was to determine if this phenomenon re

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