Sökning: "reactivity"
Visar resultat 31 - 35 av 879 avhandlingar innehållade ordet reactivity.
31. Selectivity in Palladium- and Enzyme-Catalyzed Reactions : Focusing on Enhancement of Reactivity
Sammanfattning : Catalysis has a profound impact on all living species on the earth. Nature’s catalysts, the enzymes, have the ability to selectively promote a specific bio-chemical transformation, given the required substrate. LÄS MER
32. Metal Cluster Reactivity. Adsorption of small molecules in biomolecular collisions
Sammanfattning : Metal clusters can be characterized as the tiniest possible metal particles, containing only an easily counted number of atoms. In this work, reactions between metal clusters and diatomic molecules have been investigated. We have constructed an experimental set-up to produce and detect clusters, and to investigate their chemical reactivity. LÄS MER
33. Physiological Stress Reactivity in Late Pregnancy
Sammanfattning : During pregnancy, the basal activity is increased in both of our major stress response systems: the sympathetic nervous system and the hypothalamic-pituitary-adrenal axis. At the same time, the reactivity towards stressors is reduced. These alterations sustain maternal and fetal homeostasis, and are involved in the regulation of gestational length. LÄS MER
34. Effects of oestrogen on haemodynamic and vascular reactivity - A study in animal models and humans
Sammanfattning : Effects of Oestrogen on Haemodynamic and Vascular Reactivity A study in animal models and humans Lisa Brandin Institute of Medicine, Department of Emergency and Cardiovascular Medicine, Sahlgrenska University Hospital/Östra, Sahlgrenska Academy, Göteborg University, Göteborg, Sweden ABSTRACT Previous studies have shown that oestrogen, the female sex hormone, plays a protective role in the cardiovascular system. However the site of action remains incompletely understood. LÄS MER
35. New Reactivity in Diaryliodonium Salt Chemistry
Sammanfattning : Diaryliodonium salts (Ar2IX) have emerged as versatile multi-purpose reagents with desirable properties such as easy accessibility, low toxicity and applicability under mild and metal-free reaction conditions. Despite displaying broad utility in arylations of both carbon and heteroatom nucleophiles, the overall sustainability of these protocols is compromised by featuring poor atom economy due to the formation of stochiometric iodoarene byproducts. LÄS MER