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| 1 | Valuing Different Road Option for Stonehenge显示文摘 | Maddison D Mourato S | 2001 | Conservation and Management of Archaeological Sites2001，4，： | 1 |
| 2 | Investigating the Potential for Marine Resource Protection through Environmental Service Markets : An Exploratory Study from La Paz, Mexico显示文摘 | Barr R F Mourato S | 2009 | Ocean & Coastal Management2009，，11： | 1 |
| 3 | 显示文摘 | Mourato A Viana A S Correia J P | 2004 | Eleetrochimica Acta2004，49，： | 1 |
| 4 | Community Conservation and a Two-stage Approach to Payments for Ecosystem Services 显示文摘 | Cranford M Mourato S | 2011 | Ecological Economics2011，71，15： | 1 |
| 5 | Community conservation and a twostage approach to payments for ecosystem services显示文摘 | Cranford M Mourato S | 2011 | Ecological Economics2011，71，15： | 1 |
| 6 | Willingness to Pay for Carbon Offset Certification and Co - Benefits among( High - )Flying Young Adults in the UK 显示文摘 | MacKerron G J Egerton C Gaskell C Parpia A Mourato S | 2009 | Energy Policy2009，37，4： | 1 |
| 7 | Pricing Cultural Heritage: a New Approach to Managing Ancient gesources显示文摘 | Mourato S Ozdemiroglu E Hett T et ai | 2004 | World Economcs2004，，5： | 1 |
| 8 | Life satisfaction and air quality in London显示文摘 | Mackerron G Mourato S | 2009 | Ecological Economics2009，68，： | 1 |
| 9 | Life satisfaction and air quality in London显示文摘 | MacKerron G Mourato S | 2009 | Ecological Economics2009，，68： | 1 |
| 10 | Investigating the potential for marine resource protection through environmental service markets: An exploratory study from La Paz, Mexico 显示文摘 | BARR R F MOURATO S | 2009 | Ocean & Coastal Management2009，52，11： | 1 |
| 11 | Greening London's black cabs:a study of driver's pref-erences for fuel cell taxis显示文摘 | MOURATO S | 2004 | Energy Policy2004，32，5： | 1 |
| 12 | Life satisfaction and air quality in London显示文摘 | Mac Kerron G Mourato S | 2009 | Ecological Economics2009，68，5： | 1 |
| 13 | Polyaniline films containing palladium microparticles for electrocatalytic purposes 显示文摘 | MOURATO A WONG S M SIEGENTHALER H | 2006 | Journal of Solid State Electrochemistry2006，10，3： | 1 |
| 14 | Are we willing to pay enough to 'back the bid'? Valuing the in- tangible impacts of London's bid to host the 2012 Summer Olympic Games 显示文摘 | Atkinson G Mourato S Szymanski S | 2008 | Urban Studies2008，45，2： | 1 |
| 15 | Transferring the benefits of avoided health effects from water pollution between Portugal and Costa Rica显示文摘 | Barton D N Mourato S | | 0，，2： | 1 |
| 16 | ^(222)Rn calibration procedure for water analyses by liquid scintillation counting显示文摘Purpose Among the several methods to measure ^(222)Rn in water,the liquid scintillation counting(LSC)technique is one of the most sensitive and widely used when analysing non-saline waters by liquid extraction,providing excellent accuracy,precision and low-level detection limits.When using the liquid scintillation counter Tri-Carb 3170 TR/SL(Perkin-Elmer)it is not possible to make an automatic determination of the alpha/beta discrimination parameter,being necessary to evaluate the pulse decay discriminator(PDD)value manually to the ^(222)Rn determination.In this work,we describe the steps to perform the calibration of that type of equipment.Methods The method consists in the preparation of standard samples from a ^(226)Ra certified standard solution and the adjustment of the PDD value by hand until the percentage of alpha events reaches a plateau of a near-constant fraction of total events.The process consists in taking several measures between PDD 80 and 200 with 15 min counting time each.Within the plateau,the alpha/beta ratio was used to determine the plateau final range as well as the optimum PDD value.After that,the calibration standards and blanks were measured and the region of interest(ROI)was established by finding the maximum value for the figure of merit(FOM)in the upper and lower limits.Results The optimal PDD value of 148 was established by the alpha/beta ratio,and after that,it was possible to measure ^(226)Ra standards to perform the calibration.An efficiency of(9.758±0.035)×1^(0-1) was obtained.In routine measurements,a detection limit of about 0.50 Bq L^(-1) is achieved for a 120 min counting time.To evaluate the uncertainty budget,the uncertainties of the net count rate,the efficiency,the sample amount and the decay correction factor were considered.Conclusions A method was developed for the calibration of LSC Tri-Carb 3170 TR/SL with the optimization of the PDD using a ^(226)Ra standard solution.The acquisition to obtain the plot of the variation of the events fraction in each window(alpha and beta)in function of PDD allowed to evaluate a plateau where the fraction of events was at a minimum.Afterwards,it was possible to measure the set of ^(226)Ra standards after the equilibrium with ^(222)Rn and determine the efficiency for ^(222)Rn with a detection limit of about 0.50 Bq L^(-1) in routine analyses. | Ana Rita Gomes Sérgio Dias Anabela Mourato Joao Abrantes Mário Reis | 2023 | Radiation Detection Technology and Methods2023，7，2： | 0 |
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