James D. Navratil – författare

The purpose of this book is to present in a monographic and systematised form a review of all the literature devoted to polyurethane-based polymeric sorbents in separation chemistry. The primary types of sorbents dealt with are polyurethane foams and open-pore polyurethanes. The structure of the monograph follows this dichotomy. A book of this nature should stimulate thinking and incite its reader to consult the original literature. It will, however, not make such a consultation superfluous. A fair amount of the results described in this monograph constitute the main activity of investigation which took place in the authors laboratories during the past decade.

The purpose of this book is to present in a monographic and systematised form a review of all the literature devoted to polyurethane-based polymeric sorbents in separation chemistry. The primary types of sorbents dealt with are polyurethane foams and open-pore polyurethanes. The structure of the monograph follows this dichotomy. A book of this nature should stimulate thinking and incite its reader to consult the original literature. It will, however, not make such a consultation superfluous. A fair amount of the results described in this monograph constitute the main activity of investigation which took place in the authors laboratories during the past decade.

The purpose of this book is to present in a monographic and systematised form a review of all the literature devoted to polyurethane-based polymeric sorbents in separation chemistry. The primary types of sorbents dealt with are polyurethane foams and open-pore polyurethanes. The structure of the monograph follows this dichotomy. A book of this nature should stimulate thinking and incite its reader to consult the original literature. It will, however, not make such a consultation superfluous. A fair amount of the results described in this monograph constitute the main activity of investigation which took place in the authors laboratories during the past decade.

Separation of chemical species is a gate to final success of synthesis and preparation of compounds in pure and defined state. Variability of natural and artificial mixtures to be treated is enormous. Task of chemistry is to separate components of homogeneous mixtures (the gaseous and liquid solutions). The book concentrates on understanding the basic philosophies of both equilibrium and nonequilibrium chemical thermodynamics and engineering performance that lay in principle of separation technique such as distillation, crystallization, centrifugation, sorption, membrane separations, chromatography, and liquid-liquid extraction. Specific phenomena connected with photochemical separation, isotope composition, and radioactivity are discussed as well. The book is written for advanced students of chemistry having the knowledge of physical chemistry. Calculation examples are based on the international system of units. Unique list of over 1,300 full references covers scientific literature of the eighteenth to the twenty-first centuries.

The Fourth Bear Hug is a continuation of the stories in The Bear Hug, The Final Bear Hug, and The Third Bear Hug. The story in the latter book concludes with Deborah Czermak dying and John Czermak recovering. However, Andrei s brother, Alexei Pushkin, is determined to kill John since he is convinced that John was responsible for the deaths of his brother and two nephews. However, Alexei is unsuccessful in killing Professor Czermak. John then returns to work at Clemson University. The story in The Fourth Bear Hug begins after Czermak retires from Clemson, sells his two homes, and moves to Colorado. He then starts working as a part-time professor at the University of Colorado and shares an office with a visiting professor from Moscow. He and Professor Lara Medvedev start traveling together to meetings, and a loving relationship develops. They attend a conference in Sweden followed by going to Moscow so John can meet Lara s parents. During this time Czermak visits a good friend at the Academy of Sciences where they go to the roof of a tall academy building to take some pictures. Then Alexei shows up and tries to push Czermak off the building, but instead Alexei falls to his death. Since John now thinks that no one is trying to murder him, he asks Lara to marry him. She happily agrees. A few days later they have a wedding reception at Lara s parents home. The party has a tragic ending. Globe-trotters should especially enjoy reading about some of the author s travels to various places in the world.

This epic drama opens in Boulder, Colorado, at the home of Oxford-educated Robert Dalton, an internationally known chemistry professor. His houseguest is Jozef Bardowski, head of the analytical laboratory of Warsaw's Nuclear Energy Institute. Knowing that Dalton, accompanied by his Polish-born wife, Helena, will shortly embark upon a year's sabbatical at the University of Vienna, Bardowski expresses his fears that someone is introducing mind-altering drugs into Poland's natural gas to subdue the Polish people. To present the matter to the United Nations, he asks Dalton to analyze gas samples to be smuggled from Warsaw into the Austrian capital. Dalton agrees, unaware that by doing so, he will subject both himself and Helena to acts of terror, including an attempt on his own life.

The Fifth Bear Hug is a continuation of the stories in The Bear Hug, The Final Bear Hug, The Third Bear Hug, and The Fourth Bear Hug. The story in the latter book begins with Dr. John James Czermak wanting to start a new life because he was responsible for his third wife getting murdered. He retires from Clemson University, sells his two homes in South Carolina, and moves to Colorado. John then starts working as a part-time professor at the University of Colorado and shares an office with a visiting professor from Moscow. Lara Medvedev and John start traveling together to meetings, and a loving relationship develops. They attend a conference in Sweden, followed by an expedition on a ship down the coast of Norway. From Oslo, they fly to Saint Petersburg, followed by a train ride to Moscow so John can meet Lara's parents. After their arrival in Moscow, John visits a good friend at the Academy of Sciences, where they go to the roof of a tall academy building so John can take some pictures. Then Alexei, who believes Czermak killed his brother and two nephews, shows up and tries to push John off the building, but instead, he falls to his death. Since John now thinks no one is trying to murder him, he asks Lara to marry him. She happily agrees. A few days later, they have a wedding reception at the home of Lara's parents. After the party ends and everyone has left, Lara's ex-husband arrives to kill John but accidentally kills Lara. In The Fifth Bear Hug, John returns to Colorado, sells his home in Nederland, and moves to Denver. Kim Carn, a CIA agent, contacts John and asks for his help on a few missions to gather intelligence for the CIA as he had done when he was at Clemson University. Kim is also on the lookout for the person who murdered her husband, who was the CIA bureau chief at the U.S. Embassy in Kiev. She suspects he was killed because he had obtained embarrassing information concerning a White House request for the Ukraine government to find damaging information on a leading presidential candidate who was a former American ambassador to the Ukraine. The White House knows that Kim now has the information. She narrowly escapes being killed by a CIA-hired assassin who had murdered her husband. The story ends with Kim s car being blown up by the assassin with John inside the car instead of Kim. Globe-trotters should especially enjoy reading about some of the author s travels to various places in the world.

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