منابع مشابه
SYNTHESIS OF SOME SUBSTITUTED NAPHTHALENES VIA BENZYNE AND THEIR 13C-NMR AND 'H-NMR STUDIES
Aprotic diazotization of anthranilic acid with isoamylnitrite or amylnitrite gave benzenediazonium-2- carboxylate. Subsequent thermal decomposition of this diazonium salt (in situ) in 1,2-dichloroethane as a solvent at 85OC and in the presence of 2,5-diethyl-3,4-diphenylcyclopentadienonaes a trapping agent gave 1,4-diethyl-2, 3-diphenylnaphthalene in high yield, after loss of carbon monoxid...
متن کاملMolecular dynamics studies of NMR relaxation in proteins.
There is a growing awareness that the visualization of proteins as large rigid molecules, each of which can be described by a single static structure, is inadequate. Instead, it is now realized that proteins undergo structural fluctuations which span a range of times from subpicoseconds to milliseconds or longer. In this report we are concerned with the relation between protein fluctuations occ...
متن کاملNMR studies of molecular structure in fruit cuticle polyesters.
The cuticle of higher plants functions primarily as a protective barrier for the leaves and fruits, controlling microbial attack as well as the diffusion of water and chemicals from the outside environment. Its major chemical constituents are waxes (for waterproofing) and cutin (a structural support polymer). However, the insolubility of cutin has hampered investigations of its covalent structu...
متن کاملNMR Studies and Molecular Dynamic Simulation of Synthetic Dendritic Antigens
A series of synthetic benzylpenicillinoylated dendrimers has been prepared using up to 4th generation PAMAM dendrimers. These nanoconjugates, as nanosized Dendritic Antigens, are useful in the diagnostic evaluation of drug allergy due to specific molecular recognition with the Human Immunological System (IgE). The morphology and dimensions of the conjugates coupled to the orientation of the per...
متن کاملRelaxation of Molecular Conformation of Plasticized Poly (vinyl Chloride) (pvc)
The relaxation by creep recovery of plasticized poly lvinyl chloride) (PVC) was tested in relation to applied stresses and working temperatures. The relaxation time increased with stress but decreased with temperature. From the temperature dependence of relaxation times, an energy of 0.21 eV was found to activate the creep recovery process. It is thought that creep recovery is effected by the c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Polymer Testing
سال: 1995
ISSN: 0142-9418
DOI: 10.1016/0142-9418(94)00017-9