01576aam 2200409I 450 991071051310332120160705110709.0GOVPUB-C13-1b1661fc5948c4e945b0191c81f6b14a(CKB)5470000002478170(OCoLC)953032927(EXLCZ)99547000000247817020160705d1988 ua 0engrdacontentrdamediardacarrierSmall angle x-ray study of the deformation of 4,4'-diphenylmethane dilsocyanate/1, 4'-butanediol (MDI/BDO) based polyurethanes /R. M. Bribar; P. Sung; J. D. BarnesGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1988.1 online resourceNISTIR ;88-38731988.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.Small angle x-ray study of the deformation of 4,4'-diphenylmethane dilsocyanate/1, 4'-butanediol Bribar R. M1394908Barnes J. D1394909Bribar R. M1394908Sung P1394910National Institute of Standards and Technology (U.S.)NBSNBSGPOBOOK9910710513103321Small angle x-ray study of the deformation of 4,4'-diphenylmethane dilsocyanate3452764UNINA05275nam 22006494a 450 991101933780332120200520144314.09786610839117978128083911512808391129780470060230047006023997804700602230470060220(CKB)1000000000357127(EBL)290988(SSID)ssj0000099560(PQKBManifestationID)11140527(PQKBTitleCode)TC0000099560(PQKBWorkID)10017496(PQKB)11710304(MiAaPQ)EBC290988(PPN)149205198(OCoLC)123519029(Perlego)2751101(EXLCZ)99100000000035712720061026d2007 uy 0engur|n|---|||||txtccrAerosol sampling science, standards, instrumentation and applications /James H. VincentChichester, England ;Hoboken, NJ John Wiley & Sonsc20071 online resource (638 p.)Description based upon print version of record.9780470027257 0470027258 Includes bibliographical references and index.Aerosol Sampling; Contents; Preface; A SCIENTIFIC FRAMEWORK FOR AEROSOL SAMPLING; 1 Introduction; 1.1 Aerosols; 1.2 Particle size; 1.3 Elementary particle size statistics; 1.4 Aerosol measurement; 1.5 Sampler performance characteristics; References; 2 Fluid and aerosol mechanical background; 2.1 Fluid mechanical background; 2.1.1 Introduction; 2.1.2 Equations of fluid motion; 2.1.3 Streamlines and streamsurfaces; 2.1.4 Boundary layers; 2.1.5 Stagnation; 2.1.6 Potential flow; 2.1.7 Turbulence; 2.2 Aerosol mechanics; 2.2.1 Particle drag force and mobility; 2.2.2 Drag coefficient; 2.2.3 Slip2.2.4 General equation of motion under the in.uence of an external force2.2.5 Particle motion without external forces; 2.2.6 Particle aerodynamic diameter; 2.2.7 Impaction; 2.2.8 Molecular diffusion; 2.2.9 Turbulent diffusion; References; 3 Experimental methods in aerosol sampler studies; 3.1 Introduction; 3.2 Methodology for assessing sampler performance; 3.2.1 The direct (trajectory) method; 3.2.2 The indirect (comparison) method; 3.2.3 Critique of the alternative methods; 3.3 Scaling relationships for aerosol samplers; 3.4 Test facilities; 3.4.1 Moving air; 3.4.2 Calm air3.4.3 Slowly moving air3.5 Test aerosol generation; 3.5.1 Idealised test aerosols; 3.5.2 Dry-dispersed dusts; 3.5.3 Aerosol materials; 3.5.4 Electric charge effects; 3.6 Reference methods; 3.7 Assessment of collected aerosol; 3.8 Aerosol sampler test protocols and procedures; References; 4 The nature of air flow near aerosol samplers; 4.1 Introduction; 4.2 Line and point sink samplers; 4.3 Thin-walled slot and tube entries; 4.3.1 Facing the freestream; 4.3.2 Other orientations; 4.4 Thick-walled tubes; 4.5 Simple blunt samplers facing the wind; 4.5.1 Two-dimensional blunt sampling systems4.5.2 Axially symmetric blunt sampling systems4.6 Blunt samplers with orientations other than facing the wind; 4.6.1 A cylindrical blunt sampler; 4.6.2 Flow stability; 4.6.3 A spherical blunt sampler; 4.7 More complex sampling systems; 4.8 Effects of freestream turbulence; References; 5 Aerosol aspiration in moving air; 5.1 Introduction; 5.2 Thin-walled tube samplers; 5.2.1 Qualitative picture of aerosol transport; 5.2.2 Impaction model for a thin-walled tube facing the freestream; 5.2.3 Physical definition of impaction efficiency for aerosol sampling5.2.4 Experimental studies for thin-walled tubes facing the freestream5.2.5 Experimental studies for thin-walled tubes at other orientations; 5.2.6 Impaction model for other orientations; 5.2.7 Mathematical models; 5.2.8 Conditions for 'acceptable' isokinetic sampling; 5.3 Blunt samplers; 5.3.1 Impaction model for a blunt sampler facing the freestream; 5.3.2 Experimental investigations of blunt samplers of simple shape facing the wind; 5.3.3 Blunt samplers at other orientations; 5.3.4 Mathematical and numerical approaches to blunt samplers; 5.3.5 Orientation-averaged conditions; References6 Aspiration in calm and slowly moving airThis book provides a comprehensive account of the important field of aerosol sampling as it is applied to the measurement of aerosols that are ubiquitous in occupational and living environments, both indoor and outdoor. It is written in four parts: Part A contains 9 chapters that describe the current knowledge of the physical science that underpins the process of aerosol sampling. Part B contains 4 chapters, which present the basis of standards for aerosols, including the link with human exposure by inhalation. Part C contains 7 chapters that cover the development of practical aerosol saAerosolsAerosols.628.5/30287Vincent James H1344247MiAaPQMiAaPQMiAaPQBOOK9911019337803321Aerosol sampling3069054UNINA