The radial and aptamil allerpro tangential force components acting on each sub-conductor of a Roebel bar in a large generator lead to mechanical vibration of the stator bars in the slot.This double-frequency vibration results in additional mechanical stress on fixation materials in the slot and causes insulation deterioration and looseness of stato
This article aims to analyze the concepts and relationships of the Triple Helix Model (THM) proposed by Etzkowitz & Leydesdorff as applied to international security and defense and the contribution of THM to the development of knowledge-based economies.The method used was a qualitative, descriptive analysis, reviewing reliable scientific sources an
Accurate calculation of root water uptake (RWU) is the key to improving vegetation water use efficiency and identifying water cycle evolution patterns, and root tips play an important role in RWU.However, most of the current RWU models in the alpine meadow are calculated based on the root length density (RLD) function.In this study, a large number
Mexico City lies in a high altitude basin where air quality and pollutant fate is strongly influenced by local winds.The combination of high terrain with weak synoptic forcing leads to weak and variable winds with complex circulation patterns.A gap wind entering the basin in the afternoon leads to very different wind convergence lines over the city
In recent years, concrete has become an important versatile construction material.This paper evaluates the strength obtained by concrete with the influence of bacteria.The bacterial strains were isolated from calcareous sludge and urea ware house.The bacterial strains were identified through 16srRNA gene sequencing as Bacillus pumilus and Bacillus