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a laser » _ laser (Expand Search), a layer (Expand Search), 3d laser (Expand Search)
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Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser
Published 1995“…Laser - induced diffusion of various dopant elements into intransic germanium based on the dipping of Ge into dopant solution, have been used to produce doped ge layer using yag pulse laser with 300us duration ( A, = 1.664(1 m), Four point probe measurments of the layer conductance were used to study the effect of the doping controlled parameters mainly laser flunce, dopant solution, and annealing conditions. …”
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Effect of copper-nickel interlayer thickness on laser welding-brazing of Mg/Ti alloy
Published 2019“…Dissimilar lap joining of AZ31B Mg alloy to Cu-Ni coated Ti-6Al-4V was carried out by laser welding-brazing method. The effect of Cu and Ni contents on interfacial reaction and joint fracture load were analyzed. …”
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Pulpal blood flow changes and pain scores related to using superelastic 0.018-inch nickel titanium as the first orthodontic alignment archwire: A prospective clinical trial
Published 2021“…The archwire size group was randomly allocated with a 1:1 allocation ratio. A Laser Doppler Flowmeter was used to measure PBF at different time intervals (T0-T5). …”
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Sea water salinity detection using circular fringes formation based on diffraction of laser light
Published 2018“…The main disadvantage of these voltage based sensors is that output voltage depends on temperature, ambient light and water clarity. In this paper a simple system for salinity detection in sea water is proposed and demonstrated using laser light and ultrasound. …”
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Antimicrobial activity of amphiphilic nanomicelles loaded with curcumin against Pseudomonas aeruginosa alone and activated by blue laser light
Published 2021“…Among the three sublethal blue laser (λ 445 nm) protocols tested, the ones characterized by a fluence of 18 and 30 J/cm2 further decreased the antimicrobial concentration to 50 nM. …”
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The role of type II FB (I):Tl+ defect in laser light generation and color image formation at the low coordination surface sites of AgBr: Ab initio calculations
Published 2006“…The calculated Stokes shifted optical transition bands suggest that laser activity is relatively weak and fades quickly as the coordination number of the surface ions decreases from 5 (flat) to 4 (edge) to 3 (corner). …”
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Thermal properties of smart microencapsulated paraffin/plaster composites for the thermal regulation of buildings
Published 2015“…Thermal characterization of smart plaster composites was performed using two different experimental techniques: thermal energy storage properties, such as latent heat and heat capacities, were investigated using a Transient Guarded Hot Plate Technique (TGHPT), whereas thermal conductivities and diffusivities were measured using a periodic temperature method. …”
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Thermal properties of phase-change materials based on high-density polyethylene filled with micro-encapsulated paraffin wax for thermal energy storage
Published 2015“…The microencapsulated paraffin wax acts as a high-latent-heat material, whereas the HDPE matrix ensures the compact shape, structural compactness and mechanical strength of the final PCM. …”
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Impact of the fear of Covid-19 infection on intent to breastfeed; a cross sectional survey of a perinatal population in Qatar
Published 2022“…This study attempts to explore any relationship between the Covid-19 pandemic and perinatal obsessive-compulsive symptomatology and whether the Covid-19 pandemic has any impact on intent to breastfeed. Methods: A cross sectional survey of perinatal women attending largest maternity centre in Qatar was carried out during the months of October to December 2020. …”
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A Tailored, Bundle Care Intervention Strategy to Reduce Cardiac Mortality During the Hajj: A Population-Based, Before and After Study.
Published 2019“…Hajj is the largest human gathering with over 2 million people. …”
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Phase change materials for thermal energy storage applications in greenhouses: A review
Published 2022“…Various systems integrated with PCMs provide a diurnal temperature decrease up to 7 �C and nocturnal temperature increase up to 9 �C compared to the ambient temperature and can cover up to 30% of the greenhouse heating demand. …”
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Sorption of benzene and naphthalene on (semi)-arid coastal soil as a function of salinity and temperature
Published 2018“…The sorption of naphthalene was not affected by the change in salinity but increased by 18% when the temperature decreased from 35 to 5 �C. A sorption kinetic model was also applied to define the sorption behavior of benzene and naphthalene for the coastal soil collected in Qatar and the best fits were achieved with the Langmuir sorption isotherm.…”
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Adult Hospital Inpatient Experience in Qatar And Associated Factors: A Cross-Sectional Study
Published 2020“…The findings provide a baseline measure for the HIE on a national level and highlight important factors associated with HIE. …”
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Regional Difference in the Association between the Trajectory of Selenium Intake and Hypertension: A 20-Year Cohort Study.
Published 2021“…A total of 4039 respondents developed hypertension. …”
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Changing Trends in the Referral and Timing of Treatment for Congenital Cryptorchidism: A Single-Center Experience from Bosnia and Herzegovina.
Published 2019“…The analysis of the observed two periods (2008-2010 and 2015-2017) showed a statistically significant decrease in the mean referral age and the mean age at surgery over the last 5 years (2015-2017) (p = 0.007 and p = 0.003, respectively). …”
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Effects of covid-19 lockdown on physical activity, sedentary behavior, and satisfaction with life in Qatar: A preliminary study
Published 2021“…In conclusion, COVID-19 confinement decreased PA, increased sitting time, and decreased life satisfaction in Qatar. …”
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RIGOROUS SIMULATION AND OPTIMIZATION OF THE COLD SECTION IN A REAL LNG PLANT: UPFRONT NITROGEN REMOVAL AS PROCESS ENHANCING CONCEPT
Published 2023“…Qatar, as one of the largest LNG exporters with a 22% global share, announced in 2020 a plan to increase the production capacity by more than 60% over the next five years. …”
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