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Online since: June 2014
Authors: Carmela Tramontana, Tiziana Meduri, Carmen De Gaetano
The culture thus becomes an increasingly important role for territorial marketing in order to improve the quality of life and promote the attractiveness and competitiveness of the territory, in order to activate the factors necessary for its development.
The culture thus becomes an increasingly important role for territorial marketing in order to improve the quality of life and promote the attractiveness and competitiveness of the territory, in order to activate the factors necessary for its development.
State of preservation The Pellizzari’s Battery is affected by degradation processes of various kinds, including, in addition to anthropogenic, the most dangerous for the safety of the structure is due to the presence of ruderal vegetation, in particular of ailanto [4].
For reasons of greater efficacy and lower risk of injury to the substrate is preferred devitalizing a chemical treatment compared to only mechanical intervention, since the simple mechanical removal is not effective unless it can’t remove the root systems in a complete manner, and also the 'direct excision of vegetating structures with significant roots and deep can damage the substrate for the resistance of the roots [5].
The intended use of the project for the environments of the area north of the fort will be the 'set-up as a function of the creation of an information point or showrooms, in view of the organization of events and activities aimed at the promotion of the Hill and resources of the area, perhaps using the indirect form (being public property) for the management of the building.
The culture thus becomes an increasingly important role for territorial marketing in order to improve the quality of life and promote the attractiveness and competitiveness of the territory, in order to activate the factors necessary for its development.
State of preservation The Pellizzari’s Battery is affected by degradation processes of various kinds, including, in addition to anthropogenic, the most dangerous for the safety of the structure is due to the presence of ruderal vegetation, in particular of ailanto [4].
For reasons of greater efficacy and lower risk of injury to the substrate is preferred devitalizing a chemical treatment compared to only mechanical intervention, since the simple mechanical removal is not effective unless it can’t remove the root systems in a complete manner, and also the 'direct excision of vegetating structures with significant roots and deep can damage the substrate for the resistance of the roots [5].
The intended use of the project for the environments of the area north of the fort will be the 'set-up as a function of the creation of an information point or showrooms, in view of the organization of events and activities aimed at the promotion of the Hill and resources of the area, perhaps using the indirect form (being public property) for the management of the building.
Online since: November 2010
Authors: Yan Chao, Li Qun Wu, Yu Tao Wu, Jie Yu
Solar Cell Surface Texturing Combined Wet Etching and Ultrasonic Vibration
Yan Chaoa, Yutao Wub, Jie Yuc and Liqun Wud
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang Province 310018, P.R.
Front surface texturing in crystalline silicon solar cells has a primary role for improving cell efficiency by means of its antireflection property and light trapping with antireflection [1-3].
Wet chemical processes etch and dry processes etch are two main methods in silicon surface texture preparation, wet chemical etch used sodium or acid to produce pyramids texture on oriented material, while the dry method such as laser-structuring [6], mechanical diamond saw cutting [7], photo-lithographically defined etching [8], porous-Si etching [9], mask less RIE etching [10-11] is recently present to prepare the theoretic texture.
Sodium or acid etching is a stochastic process, and the pyramids structure can be not made regularly, which will affect light trapping.
Since the vibration of molecular is influenced by acid damp, friction between acid molecular and other factors, the motion is a two-stage vibration system.
Front surface texturing in crystalline silicon solar cells has a primary role for improving cell efficiency by means of its antireflection property and light trapping with antireflection [1-3].
Wet chemical processes etch and dry processes etch are two main methods in silicon surface texture preparation, wet chemical etch used sodium or acid to produce pyramids texture on oriented material, while the dry method such as laser-structuring [6], mechanical diamond saw cutting [7], photo-lithographically defined etching [8], porous-Si etching [9], mask less RIE etching [10-11] is recently present to prepare the theoretic texture.
Sodium or acid etching is a stochastic process, and the pyramids structure can be not made regularly, which will affect light trapping.
Since the vibration of molecular is influenced by acid damp, friction between acid molecular and other factors, the motion is a two-stage vibration system.
Online since: December 2014
Authors: I. Herrera, Stefan Kaczmarczyk, Hui Su
As it is well known that the behaviour of passengers is a very complicated factor to accommodate in the elevator model.
The special case mr=0, i.e. the empty car, is not important when considering ride quality but are of importance for maintenance or noise effects affecting the building system.
The technique presented in this paper seems to be sensitive enough to identify the mechanical response of passengers wearing different type of shoes in order to provide criteria for optimal covering floor properties of elevator cars.
Gefen, Role of EVA viscoelastic properties in the protective performance of a sport shoe: Computational studies, Bio-Medical Materials and Engineering 16 (2006) 289-299
Baly, Towards a footwear design tool: Influence of shoe midsole properties and ground stiffness on the impact force during running.
The special case mr=0, i.e. the empty car, is not important when considering ride quality but are of importance for maintenance or noise effects affecting the building system.
The technique presented in this paper seems to be sensitive enough to identify the mechanical response of passengers wearing different type of shoes in order to provide criteria for optimal covering floor properties of elevator cars.
Gefen, Role of EVA viscoelastic properties in the protective performance of a sport shoe: Computational studies, Bio-Medical Materials and Engineering 16 (2006) 289-299
Baly, Towards a footwear design tool: Influence of shoe midsole properties and ground stiffness on the impact force during running.
Online since: October 2010
Authors: Bin Wang, Hui Qin Yang, Wen Xin Zhang
The key factor is lied support system of transfer floor construction, pouring plan of
concrete, maintain concrete at later stage, temperature control technique of concrete [2,3] in high-rise
building transfer layers construction.
As the main stress condition of beam type transfer floor-transfer big beam, the loading-carrying capability forms & size are affected by the up construction form, compared rigidity of transfer beam up& low layer, position of transfer beam etc.
Under these factors, it will express different loading-carrying capability function under horizontal load which bring a transfer layer construction.
Greensmith, "Parameter Analysis for Mechanical Properties of Steel-Reinforced Concrete Transfer Girders with Inner Steel Truss," Proceedings of the IEEE World Congress on Evolutionary Computation 2008 (CEC08), in print
Burke, "Experimental study on the mechanical property of steel reinforced concrete short columns of t-shaped cross-section", SAE Paper, No.92-04-47
As the main stress condition of beam type transfer floor-transfer big beam, the loading-carrying capability forms & size are affected by the up construction form, compared rigidity of transfer beam up& low layer, position of transfer beam etc.
Under these factors, it will express different loading-carrying capability function under horizontal load which bring a transfer layer construction.
Greensmith, "Parameter Analysis for Mechanical Properties of Steel-Reinforced Concrete Transfer Girders with Inner Steel Truss," Proceedings of the IEEE World Congress on Evolutionary Computation 2008 (CEC08), in print
Burke, "Experimental study on the mechanical property of steel reinforced concrete short columns of t-shaped cross-section", SAE Paper, No.92-04-47
Online since: December 2009
Authors: J.S. Ajiboye, S.A. Balogun, A.T. Agboola, G.J. Eke
Plastic deformation process resulting in ultra fine grained materials which are rapidly
grasping applications due to their superior mechanical properties remain an area of continued
research interest.
Introduction The formability of metals is directly related to its work hardening rate and level of anisotropy in its mechanical properties.
These material properties depend on the alloying content, the degree of preferred orientation, retained deformation microstructure, and/or recrystallization microstructure following processing [1].
The grain refinement induced significant improvement in mechanical properties.
Mechanical properties tests of extruded products.
Introduction The formability of metals is directly related to its work hardening rate and level of anisotropy in its mechanical properties.
These material properties depend on the alloying content, the degree of preferred orientation, retained deformation microstructure, and/or recrystallization microstructure following processing [1].
The grain refinement induced significant improvement in mechanical properties.
Mechanical properties tests of extruded products.
Online since: April 2012
Authors: Pavel Cizek, Peter D. Hodgson, Hossein Beladi
The stored energy within DRX grains appears to be principally consistent with the corresponding Taylor factor values.
Each of these processes can change the austenite grain characteristics as well as the crystallographic texture, thus affecting the rolling loads, the transformation product characteristics on cooling and the final mechanical properties.
This can account for the observed gradual increase in the A texture component having the lowest Taylor factor (i.e. 1.7) and for the parallel decrease in the C orientation having a high Taylor factor (i.e. 3.0) during the DRX evolution (see Fig. 2d).
The C component has a relatively higher Taylor factor than the A component [13].
The temperature and strain rate used in the current work were comparatively higher, which could have affected the dominant operating mechanism of dislocation annihilation.
Each of these processes can change the austenite grain characteristics as well as the crystallographic texture, thus affecting the rolling loads, the transformation product characteristics on cooling and the final mechanical properties.
This can account for the observed gradual increase in the A texture component having the lowest Taylor factor (i.e. 1.7) and for the parallel decrease in the C orientation having a high Taylor factor (i.e. 3.0) during the DRX evolution (see Fig. 2d).
The C component has a relatively higher Taylor factor than the A component [13].
The temperature and strain rate used in the current work were comparatively higher, which could have affected the dominant operating mechanism of dislocation annihilation.
Online since: February 2013
Authors: Chun Xia Zhu, Bo Liu, Jing Wang, Zhi Wen Chen
It is a main research work to reduce and void vibration for ensuring the machine tool will not generate self-oscillation when it works in the range of rated power. many study shows that good dynamic characteristic of parallel machine tool be more needed and more important with gradually improvement of machining property[2], so dynamic characteristic analysis is more important.
The experience and repeated measured are main means of traditional structure design while considering dynamic factor, it greatly slowdown the design speed and the design quality also hard to be optimization[3].
So the transfer function and its denominator are all same in spite of any measured point in mechanical system.
According Eq.(8), the damping ration and stiffness of system are: From above result, we can get that, the test points cannot affect the whole dynamic characteristic, which is accord with theory analysis.
References [1] Xu benwen, Jiao Qunying, Mechanical Vibration and Modal Analysis Foundation, Beijing:China Machine press, 1998 [2] Jinwook Kim, Park, F C Mumsang Kim.
The experience and repeated measured are main means of traditional structure design while considering dynamic factor, it greatly slowdown the design speed and the design quality also hard to be optimization[3].
So the transfer function and its denominator are all same in spite of any measured point in mechanical system.
According Eq.(8), the damping ration and stiffness of system are: From above result, we can get that, the test points cannot affect the whole dynamic characteristic, which is accord with theory analysis.
References [1] Xu benwen, Jiao Qunying, Mechanical Vibration and Modal Analysis Foundation, Beijing:China Machine press, 1998 [2] Jinwook Kim, Park, F C Mumsang Kim.
Online since: July 2011
Authors: Ni Jun Qian, Qiu Ping Cheng, Zhi Yun Liu, Xiao Rui Dong
Introduction
Cranes are widely used in the metallurgical, mechanical and electrical, railways, ports, construction and other production areas [1].
Due to the special structure and movement forms [2], there are many risk factors existing in the lifting machinery.
For example, a change of operating system in the presentation tier would only affect the user interface code.
On the other hand, lifting height, starting weight, span and other properties are inspected safety assessment factors.
So, the system preserves these above properties when modeling for the safety assessment.
Due to the special structure and movement forms [2], there are many risk factors existing in the lifting machinery.
For example, a change of operating system in the presentation tier would only affect the user interface code.
On the other hand, lifting height, starting weight, span and other properties are inspected safety assessment factors.
So, the system preserves these above properties when modeling for the safety assessment.
Online since: October 2013
Authors: Jan Madl
Introduction
Surface integrity is important especially in finishing operations, because it affects the properties of the product, such as its fatigue strength and service life.
The properties of machined surfaces may be responsible for catastrophic defects and accidence of machines.
Optimum tool life and cutting conditions are dependent on many factors in machining processes.
Optimisation of cutting conditions also relates to the stochastic of the cutting process, the possibility of cutting tool wear and tool breakage monitoring, the possibility of adaptive control of a machine tool, and other factors.
For power characteristics of this type the following restriction can be derived [5]: (16) where: D - diameter of cutting in mm, ap - depth of cut in mm, h - mechanical effectiveness of the machine tool, kFc,xFc,yFc - constants of force equation.
The properties of machined surfaces may be responsible for catastrophic defects and accidence of machines.
Optimum tool life and cutting conditions are dependent on many factors in machining processes.
Optimisation of cutting conditions also relates to the stochastic of the cutting process, the possibility of cutting tool wear and tool breakage monitoring, the possibility of adaptive control of a machine tool, and other factors.
For power characteristics of this type the following restriction can be derived [5]: (16) where: D - diameter of cutting in mm, ap - depth of cut in mm, h - mechanical effectiveness of the machine tool, kFc,xFc,yFc - constants of force equation.
Online since: January 2011
Authors: Jun Zhe Liu, Zhi Min He
The porosity mainly related to the water-cement ratio cement paste and the degree of cement hydration, Also with other factors such as conservation methods and system of the mineral composition of cement, additives and so on[3,4].
This paper combined the results of theoretical and experimental research, and mainly considered the change of porosity in different levels of steam-cured concretes and its main influencing factors with or without surface covering.
Mechanical properties of concretes are determined according to the Chinese National standard GBJ 81-1985.
The heat transfer process of internal concrete largely depends on the material properties of concrete, mix proportion and the hardening degree of concrete, and is inversely proportional to the heat transfer distance.
It is clear that different way of mineral admixtures combination affects the values of concretes porosity.
This paper combined the results of theoretical and experimental research, and mainly considered the change of porosity in different levels of steam-cured concretes and its main influencing factors with or without surface covering.
Mechanical properties of concretes are determined according to the Chinese National standard GBJ 81-1985.
The heat transfer process of internal concrete largely depends on the material properties of concrete, mix proportion and the hardening degree of concrete, and is inversely proportional to the heat transfer distance.
It is clear that different way of mineral admixtures combination affects the values of concretes porosity.