The nitrogen-containing ring structures are at the hub of metabolism and include ATP, nucleic acids, many coenzymes, metabolic regulators and integrators such as adenosine and GTP, signalling compounds such as cyclic nucleotides and plant cytokinins and biochemically functional pigmets of which haemoglobin, the cytochromes and chlorophyll are examples.
This important book collates and integrates current knowledge of all the biologically important N-heterocyclic compounds, covering the relationship between their chemical structures and physiological functions within this key group of...

I knew during the writing of "Valley of the Wolf Warrior" that it was necessary to tell this story. It had been dwelling in my mind for quite some time. The story and saga of this lineage was not complete without the sacrifices of the grandfather who created this family being revealed. This is the father of Aran of the valley, in the Pyrenees Mountains of Northern Spain. His attempt to organize the Celtic tribes into an efficient national entity was essential to survival. He knew this, but many other powerful nations on the realm of expanding into the world scene did also. In 1000 BC the...

My children know a little about my years of growing up, but few people have a real knowledge of the struggles my mom had to deal with after her and dad broke up and went separate ways in 1949. My older sisters would have a different perspective of events after mom was on her own.They had known a life of dad being at home providing for his family most of their life. The younger kids had a much different view of the events in mom's life with no dad to help provide income. We had to deal with life in a totally foreign world, a world of being alone... The beginning of this transcript should...

This book is intended to be a personal history of my life and experiences with the military department of Arizona for thirty four years as a full time employee. I would eventually serve as a civilian technician or on Active duty with the USAF. It is my hope and desire that people will take this book as it is intended, "a history" of only one person and the people he had around him. It is filled with personal information of a world from long ago, and a country with a different character. The Copperheads were a group of men and women who wanted only to do their duty and help this country...