Studies of Structural Properties and Their Relationship to Critical Parameters in Superconducting Materials.

1984 ◽  
Author(s):  
C. W. Kimball
Author(s):  

Бетон – перспективный материал для строительства морских ледостойких сооружений в условиях арктических морей. Надежность и долговечность бетонных сооружений определяется средой эксплуатации и ее параметрами, один из которых – бетонная абразия, важнейший, но недостаточно изученный. Авторы представляют исследование (эксперимент и моделирование) свойств бетона, оказывающих влияние на его стойкость к истиранию от действия ледяных образований. Приведен ход и результаты эксперимента с образцами бетона для определения параметров их конструктивных свойств. Ранжированы основные характеристики бетонов по тесноте связи с интенсивностью ледовой абразии. Предложена общая модель интенсивности ледовой абразии, представлены номограммы зависимости интенсивности ледовой абразии от различных свойств бетонов. Ключевые слова: бетон, истирание бетона, долговечность бетона, ледовое воздействие, долговечность бетонных сооружений Concrete is a promising material for construction of offshore ice-resistant structures in the Arctic seas. The reliability and durability of concrete structures are determined by the operating environment and its parameters. One of the most critical parameters is concrete abrasion, which is the least studied phenomenon, that at the same time has a significant impact on the durability of such structures. The authors present a study (experiment and modeling) of concrete properties that affect its resistance to abrasion from the action of ice formations. The course and results of experiments with concrete samples to determine the parameters of their structural properties are presented. The primary characteristics of concretes are ranked according to the tightness of connection with the intensity of ice abrasion. The general model of the intensity of ice abrasion is proposed, nomograms of the dependence of the intensity of ice abrasion on various properties of concrete are presented. Keywords: concrete, concrete abrasion, concrete durability, ice impact


10.2172/93594 ◽  
1995 ◽  
Author(s):  
M.J. Fluss ◽  
R.H. Howell ◽  
P.A. Sterne ◽  
J.W. Dykes ◽  
W.D. Mosley ◽  
...  

1996 ◽  
Vol 1 (3) ◽  
pp. 200-205 ◽  
Author(s):  
Carlo Umiltà ◽  
Francesca Simion ◽  
Eloisa Valenza

Four experiments were aimed at elucidating some aspects of the preference for facelike patterns in newborns. Experiment 1 showed a preference for a stimulus whose components were located in the correct arrangement for a human face. Experiment 2 showed a preference for stimuli that had optimal sensory properties for the newborn visual system. Experiment 3 showed that babies directed their attention to a facelike pattern even when it was presented simultaneously with a non-facelike stimulus with optimal sensory properties. Experiment 4 showed the preference for facelike patterns in the temporal hemifield but not in the nasal hemifield. It was concluded that newborns' preference for facelike patterns reflects the activity of a subcortical system which is sensitive to the structural properties of the stimulus.


1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-47-Pr2-50
Author(s):  
O. Crisan ◽  
J. M. Le Breton ◽  
F. Machizaud ◽  
A. Jianu ◽  
J. Teillet ◽  
...  

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-95-Pr7-98 ◽  
Author(s):  
D. Morineau ◽  
F. Casas ◽  
C. Alba-Simionesco ◽  
A. Grosman ◽  
M.-C. Bellissent-Funel ◽  
...  

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