منابع مشابه
Entropy and Phase Coexistence in Clusters: Metals vs. Nonmetals
Small clusters violate the Gibbs phase rule by exhibiting two or more phases in thermodynamic equilibrium over bands of temperature and pressure. The reason is the small number of particles comprising each system. We review recent results concerning the size ranges for which this behavior is observable. The principal characteristic determining the coexistence range is the transitions entropy ch...
متن کاملTetracoordinate Planar Nonmetals
Tetracoordinate planar carbon (that is, carbon atoms coordinated by four other atoms in a square-planar arrangement), first proposed by Hoffmann et al. over thirty years ago, was recently observed in the vibrationally averagedD4h [Al4C] , C2v Al3XC, [Al3XC] (X= Si,Ge), and [CAl4] 2 . Tetracoordinate planar (TP) Si and Ge centers were also discovered in MAl4 and [MAl4] . The TP bonding character...
متن کاملLaser-ultrasonic Optical Characterization of Nonmetals
There is now a growing interest in the use of laser-generated ultrasound for nondestructive evaluation of materials [1,2]. In the case of nonmetals, the laser-ultrasonic displacement signals result from temporal convolution between the optical penetration, the laser pulse duration and the laser spot extension [3,4]. The temporal information present in the first longitudinal arrival called "the ...
متن کاملCryptogenic organising pneumonia or acute fibrinous and organising pneumonia?
First, histology is described as follows: ‘‘...diffuse intraalveolar exudate of granular, fibrinous material...’’. Organising pneumonia pattern, the histological hallmark of cryptogenic organising pneumonia, is characterised by intraalveolar buds of granulation tissue. Recently, a new anatomoclinical entity has been reported by BEASLEY et al. [2] as ‘‘acute fibrinous and organizing pneumonia (A...
متن کاملCryptogenic organising pneumonia or acute fibrinous and organising pneumonia?
First, histology is described as follows: ‘‘...diffuse intraalveolar exudate of granular, fibrinous material...’’. Organising pneumonia pattern, the histological hallmark of cryptogenic organising pneumonia, is characterised by intraalveolar buds of granulation tissue. Recently, a new anatomoclinical entity has been reported by BEASLEY et al. [2] as ‘‘acute fibrinous and organizing pneumonia (A...
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ژورنال
عنوان ژورنال: Foundations of Chemistry
سال: 2020
ISSN: 1386-4238,1572-8463
DOI: 10.1007/s10698-020-09356-6