The IEEE Microwave Theory and Technology Society (MTT-S) started as the “Professional Group on Techniques” (PG MTT) when founding committee received approval from then Institute of Radio Engineers (IRE) 7 March 1952. first meeting, held 1 May 1952, included Ben Warriner chair; Andre Clavier vice Bill Mumford secretary–treasurer; members Paul Coleman, Don King, Harry Marvin, Joe McCann, George R...

ÖZ E T Bu çalışmada tetrazolyum tuzları ve formazanların yapıları tanımlanmıştır. Ayrıca formazan-tetrazolyum sistemlerinin önemi ve kullanım alanları açıklanmıştır. Formazanların sahip oldukları conjugate p-system kaynaklanan tautomerleşme özellikleri ve geometrik izomerleri incelenmiştir. Bu bileşiklerin en yaygın kullanılan sentezleri ve yapılarının açıklanmasında önemli olan UV-visible, IR ...

T, . etrazolium stains permit the histochemical demonstration of dehydrogenase enzymes in tissue sections. These stains are soluble compounds which act as hydrogen acceptors developing insoluble formazan precipitates in the reduced state. Blue tetrazolium was first used by DeBerardinis to study frozen corneal tissue sections and subsequently has been used by Kuwabara and Cogan, who studied the ...

There is a certain consensus on some defining features of collocations (they are frequent, recurrent, conventional, institutionalized, etc.), but there is not much agreement on other characteristics, for example whether or not they constitute binary lexical relations, and — crucially— whether they are arbitrary, and must be stipulated, or should instead be deduced or inferred. I will argue that...