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Online since: January 2014
Authors: Long Min Jiang, Jin Dan Zhang, Lei Liu, Hong Jun Li
This method can greatly improve the compressive performance and bending property of structural components.
It is reliable and easily operated with less work on site, but a large amount of steels are required, and it will be obviously affected when used in high temperature with no protection.
(a) Hysteresis curve before reinforcement (b) Hysteresis curve after reinforcement Figure 4- Hysteresis curve James Paterson, Denis Mitchell, M.ASCE [14] pointed out that there were several factors to enhance the ductility of shear walls.
[2] Xide Li, Bingyan Xu, Zhenhua Sun: Research on the mechanical characteristics of concrete reinforced with carbon fiber, Building Technique Development, In Chinese, June, (2002)
Online since: August 2017
The differences in slags behavior under tested conditions are attributed to different chemical and mineralogical properties of studied wastes.
The physiochemical properties were determined using inductively coupled plasma atomic emission spectroscopy and X-ray diffraction, and microbial community structure was investigated by MiSeq high throughput sequencing.
Although the experimental conditions are very simple, it is expected to obtain important and fundamental information adoptable to understand many other factors affecting bioleaching of chalcopyrite, such as microorganisms and ferric ion.
Our findings are believed to be helpful to more clearly evaluate the factors on bioleaching. 071 Complete genome sequence of Leptospirillum ferriphilum YSK, a super ferrous oxidizer with nitrogen fixation ability L.
However, their recycling rate is low partly due to the similar chemical and physical properties of the elements making their separation difficult.
Online since: July 2021
Authors: Wen Jing Chen, Rui Cao, Xiao Xuan Li, Ge Song
Meanwhile, the continuous insulation layer construction of the ICF house can make the effective U-value of the wall increased by 25%.[4] The airtightness of light wood house built in the United States from 2002 to 2012 is 4.8ACH (excluding mechanical ventilation), while the ICF house’s is only 1.26ACH[5], which benefits from the monolithic property of the construction.
Nowadays, the rural houses in Guanzhong are more and more affected by the urban residences, and the design of the layouts is moving to the direction of more compact functions and circulation.
Economic factors have always been the core issue of it [12].
Online since: January 2019
Authors: Giovanni Pernigotto, Alessandro Prada, Andrea Gasparella
Development of Extreme Reference Years for Building Energy Simulation Scenarios Giovanni Pernigotto1,a*, Alessandro Prada2,b and Andrea Gasparella1,c 1Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy 2Dept. of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy agiovanni.pernigotto@unibz.it, balessandro.prada@unitn.it, candrea.gasparella@unibz.it Keywords: Extreme Reference Year, Test Reference Year, EN ISO 15927-4:2005, Finkelstein-Schafer statistic, Building Energy Simulation.
When feasible, errors were fixed by interpolation (e.g., linear interpolation in case of less than 6 consecutive wrong entries of dry bulb temperature, relative humidity and wind speed and cyclic interpolation for the other cases) or by shifting data affected by bias errors [23].
Indeed, our purpose is to discard only the property of “true frequencies”, creating a weather file composed of actual measurement selected to catch extreme and anomalous climatic conditions.
Saku, Development of Weighting Factors for Climate Variables for Selecting the Energy Reference Year According to the EN ISO 15927-4 Standard, Energy and Buildings 47 (2012) 53–60
Online since: June 2020
Authors: Sabrina Iaiche, Chahra Boukaous, David Alamarguy, Abdelkader Djelloul, Djamel Hamana
ZnAl2O4 is of interest due to its combination of desirable properties such as high mechanical resistance, high thermal and chemical stability, high fluorescence efficiency, high photocatalytic activity and low surface acidity [20].
Zn2SiO4 is a wide band gap (Eg = 5.5 eV) oxide possess fascinating luminescent and physicochemical properties, such as good chemical stability, mechanical strength, thermal conductivity and low coefficient of thermal expansion, color purity, and better wear resistance [22].
Mahalingam, Properties Evaluation of Annealed ZnAl2O4 Alloy Thin Films, Dig.
Water, The structural and optical properties of ZnO/Si thin films by RTA treatments, App.
Hsiao, The crystallization and physical properties of Al-doped ZnO nanoparticles, App.
Online since: November 2021
Authors: Aditi Paul, Indu Pandey
The study also stated that mechanical and human based external sources contain distinct harvesting capabilities which results to predict the efficiency of the harvester.
The amount of energy that a sensor harvest suffers from significant error due to inherent degradation properties of the materials used.
The number of low energy nodes depends on network density, payload and other factors and if this number is very high then selecting optimum path will be challenging.
Transmission scheduling is an important factor introduced here.
Thus geographical location affects the power sustainability in such areas.
Online since: January 2013
Authors: Ya Hong Chen, Zhong Xu Han
In real-world engineering problems there are a variety of nonlinear factors with time-varying characteristics usually.
Given time-varying characteristics Hammerstein model[27] expressed by the joint expression of some controlled linear slow time-varying multi-input and multi-output observed system with n dimensions (3) (3) and a group of high-order polynomials representing nonlinear gains (4) (4) In which, are time-varying real matrices with appropriate order, is diagonal matrix with appropriate order, on behalf of some uncertainty factors (such as calorific value of the coal contained in unit coordinated control system of thermal power plants in thermal control ) [28].
The Relationship of the Methods between System Analysis and Integration On the property, system integration and system analysis are a pair of opposite propositions summed up by classical control theory.
As a study case of system integration approach, several important parameters are first given as complementary indicators to system integration, which are measurable in the process of system debugging and also are intuitive and actionable. the realization of performance indicators of control system will be affected by their advantages and shortcomings, so, they are usually designed and debugged repetitively.
Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 2007, 221(6): 843-855 [34] LU Qiang, HE Guangyu, MEI Shengwei, et al.
Online since: August 2015
Authors: Hardev Singh Virk
We observed that annealing over geologic times affects the fission track (FT) ages of micaceous minerals (muscovite, biotite and phlogopite) in pegmatites.
(ii) Electrostatic and mechanical stresses due to Coulomb forces relax.
They conclude: (i) Activation energy of annealing of nuclear tracks is a characteristic property of the detector material.
Bhatia, Activation energy for the annealing of radiation damage in CR-39 : An intrinsic property of detector, Nucl.
Virk, Correction for thermally affected fission tracks in glass (obsidian) by age plateau method, Curr.
Online since: April 2015
Authors: Mateus das Neves Gomes, Liércio André Isoldi, Luiz Alberto Oliveira Rocha, Flávio Medeiros Seibt, Elizaldo Domingues dos Santos, Marcelo Moraes Goulart, Bianca Neves Machado, Maria Fernanda Espinel Lara, Silvana Letícia Pires Iahnke
According to [8], another factor that can cause a disturbance in free water surface is the action of the winds.
An equation describing the motion of the free surface can also be highlighted: (10) The other theory mentioned above, the theory of Stokes, consists in assuming that the properties of wave motion, as the velocity potential, can be represented by a series of small perturbations [7].
Moreover, under-relaxation factors of 0.3 and 0.7 are imposed for the conservation equations of continuity and momentum, respectively.
So, to use these opposite air movements usually the Wells turbine is employed, which has the property of maintaining the rotation direction irrespective of the flow direction.
In the submergence S = 5.0 m where higher overtopping occurred, it can be noticed that there is the occurrence of several peaks, which are influenced by the reflection of the wave that focuses on the ramp (reflection of the water that does not climbed the ramp and then that water falls down colliding with the incident wave and affecting the new amount of water that enters the tank).
Online since: April 2021
Authors: Ge Ping Bi, Jin Zhe Chen
Introduction At present, in the process of production and application of metal materials, the routine test activities are to test the appearance, geometric dimension, mechanical performance, technological performance, physical performance, metallographic structure, nondestructive testing, and so on.
The purpose of parameter estimation is to infer the distribution and digital characteristics of the unknown population through the known samples, and strive to make the estimator meet the properties of unbiased, effective and consistent, so that the estimation has a higher accuracy.
The purpose of studying extreme value distribution is to extract as reliable and accurate information as possible from the observation data that have been affected by randomness or observation data of random phenomena, so as to estimate the probability of extreme events that have not occurred and will occur in return period and in special circumstances [7].
It can be seen that there are certain risks in the production process of the piston rod, and improvement or safety factor should be considered.
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