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Online since: January 2022
Authors: Said Bouzit, Sofiane Amziane, Mohammed Sonebi, Mohammed Taha, Cinzia Buratti, Francesca Merli
The concept of insulating materials permeates all professionals, who must guide the choice of construction materials, on the one hand taking into account a relatively low CO2 emission appreciated throughout the life of the material, on the other hand the economy of natural resources (Cornaro and Buratti, 2020) (Pierobon et al., 2015).
Materials and Methods A mixture with 80% wt gypsum plaster and 20% wt cork was mixed with water (water/plaster mass ratio w/p equal to 0.8).
The samples were removed from the molds after half a day and completely dried at 45°C for 2 days, in order to remove all the pore water.
Effect of water content on the acoustical and thermal properties of hemp concretes.
Online since: May 2023
Authors: Grigory Ivanovich Yakovlev, Svetlana N. Semyonova, Arina Valentinovna Shaybadullina, Аleksandr F. Buryanov, Irina Sergeevna Polyanskikh
Introduction The field of construction is constantly changing and improving, building materials professionals are constantly faced with the challenges of developing new materials as well as improving the functional properties of existing building materials, especially cement-based materials, widely used in load-bearing structures, coatings and finishes.
Adsorbed on cement grains, lignosulfonate molecules push out water molecules and give the solution plasticity.
The samples were made on the basis of cement CEM I 32.5 N and sand in a ratio of 1/3 and a water-cement ratio of 0.5 and modified with a nickel/carbon nanocomposite suspension in an aqueous surfactant solution.
Based on this, it should be assumed that more water is bound in the structure of the prototype.
An increase in the dehydration temperature is associated with the formation of stronger bonds with water in crystalline hydrates and the formation of secondary low-basic calcium hydrosilicates, the formation of which was confirmed by X-ray microanalysis [7].
Online since: April 2014
Authors: Xi Shi, Xu Fang Chen
Consider the applicable landform conditions and calculation accuracy, we use GPS and bathymeter together with Surfer software to initially determine the general physiognomy of the riverbed, and then convert the data of water depth into bottom elevation through post-processing function of the software.
Surfer Software Introduction Surfer Software is a piece of professional mapping software, which is essential for geologists and has a wide application. 1) Surfer software has inverse distance weighted interpolation method, minimum curvature method, multiple regression method and other 12 kinds of interpolation methods [1].
Under the condition of obtaining water level of the measured area (we take a certain ship lock on Cao-e River as an example), finish instruments connecting and parameters setting, and then start collecting data.
Import the collected data into bathymeter post-processing software, and use post-processing function of Surfer software for data processing, combine water depth sample with surface elevation and convert the data into riverbed elevation.
Formula for calculating the measuring point elevation [3]: Measuring point elevation=GPS RTK water level -bathymeter water depth The measured data and converted bottom elevation are shown in table 1, 2.
Online since: November 2014
Authors: Xue Feng Yu, Yuan Dong Wei, Ming Li
After the on-site inspection hydropower station hydraulic structures, Compared in table 1 Scores for each index, and quantitative indicators. 1.2 Safety assessment level According to the safety evaluation index system, combined with professional knowledge, and reference [14],security level can be divided into 5 grades,including:Ⅰ(85~95), Ⅱ(75~85), Ⅲ(65~75), Ⅳ(55~65), Ⅴ(45~55).
Rank feature value vector is (10) 4 Examples of application Was built in zhejiang province in December 1959, a small hydropower is given priority to the free flow of water diversion type hydropower station.
It has a water inlet, open channel, daily regulation pool, pressure before the pool, pressure steel pipe diversion structures, etc.
This article USES the fuzzy recognition model for water diversion buildings safety grade evaluation, This method is simple, Its physical concept is clear, and it is versatile.
To evaluate the sustainable utilization of regional water resources fuzzy variable evaluation method[J] [6]Li Yi.
Online since: November 2013
Authors: Xiao Chuan Xu, Qing Wang, Xiao Wei Gu, Jun Wang
The water input of underground mine was slightly high above open pit mine and the average was 6.69t/t.
Reference Wuppertal, Germany (Wuppertal) research institute, the material input required for the production of products or provide services are divided into five types :solid non biological material, biological material, agricultural and forestry soil (moving mobile in soil and water loss and soil erosion ),Water and air.
So a lot of data are needed as a basis, here investment caused by all kinds of material can be divided into solid abiotic material, water and air.
Most statistics come from BP World Energy Statistics, China's Coal Industry Yearbook, China Energy Statistical Yearbook, China Mining Industry Yearbook, China Economic Trade Yearbook and other official publications as well as China's national bureau of statistics (www.stats.gov.cn), university of finance and economics database (www.bjinfobank.com) and other professional statistics website.
Both groups either open pit or underground mines, air input of unit raw coal is unchanged about 0.03t/t; Water input changes little about 6.69 t/t.
Online since: June 2014
Authors: Fei Qiao, Li Lei
Recycling and utilization about PEV Li-ion battery The situation of recycling Since the large-scale scrap of EV power battery has not yet to happen, China has not set up professional power battery recycling system yet.
So, in order to further increase the recovery rate, the establishment of EV battery recycling system must be based on the following principles: Firstly, to implement extended producer responsibility system; Secondly, to engage in car battery recycling business with the implementation of accreditation;Thirdly, to develop detailed specification of regeneration technology about non-ferrous metals, indicate access to qualified non-ferrous metal recycling companies and encourage the development of high-level professional recyclers.
Reference the “Chinese Environmental and Economic Accounting Report 2004”[10]: When the total weight of waste products processing is 125400 tons, it will spend 272.91 million Yuan on water pollution, 0.28 million Yuan on air pollution, and 0.44 million Yuan on solid waste pollution, the total is 273.63 million Yuan.
So, the establishment of a complete battery recycling system must according to the spirit of the following principles: firstly, to implement extended producer responsibility system; secondly, to engage in car battery recycling business with the implementation of accreditation, and offer a certain amount of financial subsidies ; thirdly, develop detailed specification of non-ferrous metals regeneration technology, indicate access to qualified non-ferrous metal recycling companies and encourage the development of high-level professional recyclers.
Online since: July 2014
Authors: Jia Huang, Shu Pei Wang, Han Jie Zhang
They don't follow the traditional location concept facing south, but according to their own unique geographical and climate features, combined with its own travel convenient or not, the difficulty level of getting water and so on to determine the place to construct the buildings.
Secondly, we need to choose the professional and technical people to form a project team involved in the protection and restoration work, and not just go generic project bidding procedures.
Thus , by the professional way to protect and repair the traditional dwellings, we can maintain traditional dwellings historical authenticity and the local unique architectural style.
First, these must be a professional team to help decision-makers to reasonably and effectively develop the tourism of the traditional dwellings.
Online since: January 2011
Authors: Yan Hui Wang, Xue Mei Xiao, Hao Cui
The research of high-speed railway accident needs professional knowledge and its operation mechanism is complex.
Although there were many achievements on this area, there were still some deficiencies: The system was usually divided into small subsystems and only put the key point on one lonely subsystem in the researches, the description of the safety from the global perspective was still blank; Each system involves a lot of professional knowledge, the universal theory research was extremely rare.
The potential safety factors set of equipment S={}, is potential safety factors of vehicles subsystem, ={ The door fault, links, bogie, electric bow fault, traction motor faults, brake fault, air conditioning, speed, partial load and unload ,wheel failure, axle quality problem }, is the potential safety factors of line subsystem, ={small or large curve radius, overlarge line gradient, rail irregularity, inadequate super elevation of outer rail , high quality of rail tracks, sunk road bed, tunnel hidden trouble, surface of bridge, piers, water level under bridge}, is the potential safety factors of power subsystem, ={exceed voltage, exceed electric current, high temperature of electric motor, contact net fault, electric power substation fault, lack of cable}, is the potential safety factors of communication subsystem, ={ dispatching telephone fault , cable television fault , TV monitor fault, radio fault, wireless network fault, linkage system failure}, is the potential safety factors of
Online since: June 2008
Authors: Rui Shi Zhang, J.Z. Pan, L.W. Wang
With the surface modification, the water required for granulation had decreased.
This version of Image-Pro Plus is designed to run under the Microsoft Windows 32-bit systems: Windows  2000 (service pack 4), and Windows XP Professional (service pack 1).
This process destroys the normal molecule structure of water and makes the water losing lubricant function.
This was done initially because the acid was practically soluble in water and therefore restrains hydroxide.
This results in, on the one hand the extruded long wet poles which are difficult for transmo grification but easy for pulverization due to the water; on the other hand, surface water results in agg lomeration or growing up.
Online since: December 2012
Authors: Gui Yuan Li, Zhong Yuan Duan
When the responsibility of the individual colors has been extended to the entire society, the color execution must consult professionals [3].
Urban development background.Yichang located in the intersection of Hubei, Chongqing, Hunan provinces,its terrain is west to east, the landform is complex and diverse.There are mountainous territory, plains, hills.Its topography pattern could be discribed "seven mountains-one water-two fields".
National major water projects—Ge Zhouba and Three Gorges water conservancy project construction, promote the rapid development of Yichang city.
Yanjiang avenue as the landscape wall, it has built many modern architecture.The dianjun region south Yangtze river is mountainous, belongs to being development zone, and will have significant influence to the new image and pattern of city, mountain, and water intertwined.
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