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He is the Editor-in-Chief of the journal, Current Opinion in Chemical Engineering. He was also the editor of the Elsevier Series in Membrane Science and Technology during 2005-2011. He served as an Associate Editor of Separation Science and Technology during 2005-2011. He is serving/has served as a member of the editorial boards of J. Membrane Science, I&EC Research, and Separation Science and Technology.  Sirkar is a co-editor of the widely used Membrane Handbook. He has authored 180 refereed publications, 19 book chapters, 29 US patents and over 335 presentations.  He was the President of the North American Membrane Society during 1998-1999 and a Director of the Separations Division of AIChE during 1993-1996. He is the Executive Director for the period 2010-2015 of the Membrane Science, Engineering and Technology Center (MAST), which is a NSF I/UCRC.

Serum levels are normally less than  ng/mL. [7] Elevated levels of serum tryptase occur in both anaphylactic and anaphylactoid reactions, but a negative test does not exclude anaphylaxis . Tryptase is less likely to be elevated in food allergy reactions as opposed to other causes of anaphylaxis. Serum typtase levels are also elevated in and used as one indication suggesting the presence of eosinophilic leukemias due to genetic mutations resulting in the formation of FIP1L1-PDGFRA fusion genes or the presence of systemic mastocytosis . [8] [9]

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