Sabins

Units. The unit of sound absorption is the metric sabin, which is equivalent to one square meter of "perfect" absorption, eg, one square meter of a material with a = 1.0. The Knglish unit of sound absorption is the sabin, which is equivalent to one square foot of perfect absorption. In order to avoid confusion, the designation metric should always be used when referring to metric sabins. The number of metric sabins of absorption provided by an area of material is calculated by multiplying its area by its sound-absorption coefficient. For example, 10 m of material having a sound-absorption coefficient of 0.75 provides 7.5 metric sabins of absorption. 

Eor reverberation room tests of some irregularly shaped items, such as items of furniture, the number of sabins of absorption per item is commonly reported, rather than the absorption coefficient. It is important that the number and arrangement of the items also be reported because both of these factors can affect the results of the test. 

The reverberation time in a room is direcdy proportional to the volume and inversely proportional to the amount of sound absorption in the room. For most practical purposes the reverberation time is determined by the Sabine equation ... 

Fig. 1. Approximate relationship between sound pressure level and distance as a function of room absorption. Numbers on the curves are metric sabins.

Crocker, Sabin, Piping Handbook, McGraw-Hill, Inc., 1945. 

Sabinic acid Juniperus sabina Mimosine Leucen glauca... 

Futures Prices Natural gas futures contracts began trading on April 3, 1990, on the New York Mercantile Exchange (NYMEX). Sabine Pipe Line Company s Heniy Hub near Erath,... 

Downs KM (2003) Florence Sabin and the mechanism of blood vessel lumenization during vasculogenesis. Micro-circulation 10(1) 5—25... 

Gonzalez-Sabin, )., Gotor, V. and Rebolledo, F. (2004) Chemistry -A European Journal, 10, 5788-5794. 

The editors asked me to write a personal appreciation of Yngve Ohrn and I am grateful to Henry Kurtz, Vince Ortiz, and Jack Sabin for offering the opportunity. Scientific details of his works can be gathered from the bibliography and very likely from other contributions to this volume. Awards and honors have been left out by me here. A teacher s greatest satisfaction is the continuing respect from his former students and his peers, just as a parent derives his joy from his children s affection. 

R. Cabrera-Trujillo, John R. Sabin,J. Oddershede, and Stephan P.A. Sauer ... 

John R. Sabin (175), Chemistry Department, Odense University, 5230 Odense M, Denmark and Quantum Theory Project, University of Florida, Gainesville, Florida 32611... 

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