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Online since: December 2017
Authors: A. Ferreira Tomaz, R. Cardoso Barbosa, M.R. de Oliveira Pinto, M.V. Lia Fook, M.A. Sabino Gutierrez, A.G. Barbosa de Lima
Given polymers' relevance in the production of drugs and cosmetics, it is necessary that professionals seek to know the physical, chemical, mechanical and biological characteristics of the materials as well as the understanding of the organism.
Water transfer must also be studied in polymeric materials.
The values of the water vapor permeability rate vary widely.
Fespanhos, Water in industry - Rational use and reuse.
Glasgow: Blackie Academic & Professional, pp. 111-142, 1995
Online since: October 2014
Authors: Xiang Dong Mei, Yan Hui Liang, Tao Zhang, Zhong Yue Wang, Jun Ning
However, CS molecules have no amphiphilic property and can not form nano-sized micelles in water.
The precipitate was obtained by pouring the solution into ice water, collected by filtration, washed three times with distilled water and then successively extracted with toluene.
The chromatographic analysis was performed on a Waters system using an UV-spectrophotometer (Waters, USA) at a wavelength of 220 nm.
Grape leaves were added to a 400-mL beaker containing 200 mL of distilled water.
The solubility of flusilazole in water is 45 mg/L (pH=7.8) at room temperature.
Online since: May 2012
Authors: Gui Yun Feng, Rong Rong Sun
It is a unique modern joint-stock company with “Special Laboratory Qualification”, “Henan New Wall Materials Certificate” and “Pre-mixed Concrete Professional Qualification III” approved and issued by Henan Construction Department and Bureau of Quality Supervision in Xixia County.
It can be seen in the table that the main component of limestone is CaCO3 with CaO content of 52.7%, satisfying its content greater than 50% as required above; and water demand ratio is 93%, indicating a high water-reduction effect.
Table 2 Chemical component analysis results of limestone powder in Dangziling Village (unit: %) CaO SiO2 Al2O3 Fe2O3 MgO S Water demand ratio 52.70 0.36 0.39 0.09 2.22 0.008 93 Comparative research on limestone as cement admixture in preparation of finished cement It is considered in domestic and foreign studies that chemical reaction can occur to limestone with C3A and C4AF in cement clinker, resulting in stable calcium carboaluminate as hydration product (3CaO, Al2O3, CaCO3 and 11H2O).
China Water Resources, 2007 (21): 16 - l8
Online since: May 2012
Authors: Xiao Mei Guo, Yu Xing Lin
The Green Olympics Building Evaluation Standard (GOBES) in 2003 was the first domestic green building standard in China and later became the foundation for the Green Building Evaluation Standards (GBES) by the ministry of Construction in 2007.The new voluntary rating system includes energy conservation and other sustainability aspects such as site planning, land use, water conservation and internal air quality as well.
As the size of the company is growing quickly, efficiency, quality, the dilution of the professional abilities became barrier of expansion.
According to GBES, green buildings are “buildings that save a maximum amount of resources (including energy, land, water, and materials), protect the environment, reduce pollution, provide healthy, comfortable and efficient space for people, and exist harmoniously with nature” throughout their lifecycle [7].
The building, using principles of bioclimatic design, as well as local solar and wind power, has simple features that can be repeated, such as natural ventilation, low e glass tile, adjustable exterior siding, solar heating system, simulated wetland, gray water collection system that recovers rainwater or other no potable water for site irrigation and sewage classification and organic garbage bio -treatment disposal system.
Online since: January 2013
Authors: Guo Jing He, Jin Yi, Yue Feng Li, Liang Liang Duan
The ground water is undeveloped.
However the stability coefficient under water-saturated condition was 1.2, the basic requirement had already reached with lower safety reserve.
Under all overburden layer clearance and water-saturated condition, the stability coefficient of the slope could reach 1.35.
Table 1 The stability coefficient of the slope Slope Analysis Method Slide Safety Coefficient Natural condition Water-saturated condition Bishop Method 1.605 1.411 Sweden Slice Method 1.434 1.211 Finite element analysis The Finite Element Model Establishment.
The finite element model was analyzed by geotechnical engineering professional finite element analysis software.
Online since: November 2015
Authors: Natalia S. Vinidiktova, Vladeta Jevremović, Radovan Nikolić, Elena F. Kudina
Belyi Metal-Polymer Research Institute of National Academy of Sciences, Gomel, Belarus 2 High Technical Mechanical School of Professional Studies, Trstenik, Serbia akudina_mpri@tut.by, bvns_lns@mail.ru, cvladetaj@gmail.com, drasa62.nikolic@gmail.com Keywords: coating, epoxide binder, epoxy-silicate, siloxane, conversion layer.
In order to obtain the dispersed products, the binary compositions were coagulated with the water solution of transient metal salts of sulfate (Me = Co, Cu, Fe) by the method proposed elsewhere [2, 4].
The general scheme of surface preparation includes the following stages: mechanical treatment (blow-off, shot-blasting, grinding, polishing); cleaning and degreasing (by alkaline solution, solvent, vapor, oil-water emulsion, electrolytic degreasing), etching, descaling and roasting (chemical or electrochemical etching in acids or alkalis, roasting in concentrated acid mixtures, cleaning in the gas phase); chemical or electrochemical polishing; intermediate and finishing treatment (washing by water (by running or cascade water, cold or hot, by immersion or spraying), neutralizing, passivation, phosphating, and chromate treatment; drying).
Online since: September 2024
Authors: Sergiy Cheberiachko, Olena Sharovatova, Dmitro Radchuk, Oleg Deryugin
This alarming figure compels all health professionals dealing with occupational health issues to seek adequate ways to address this problem [16].
Bushtec, Identification of bottled natural waters by using direct conductometry.
Tishakova, Investigations of Mineralization of Water Bodies on the Example of River Waters of Ukraine.
Asian Journal of Water, Environment and Pollution. 14/4 (2017) 37–41 doi: 10.3233/AJW-170035 [13] S.
Russell, Coalescence efficiency of surface modified PBT meltblown nonwovens in the separation of water from diesel fuel containing surfactants.
Online since: July 2011
Authors: Aboulfazl Safari, Fauziah Ahmad
Both disturbed and undisturbed samples obtained below the ground water level in the depth of 0.5 m to 1 m.
First, the increase in water adsorptive capacity induced by the organic matter and second, the aggregation of soil particles causes by OC.
Thus, removing OC leads to dispersion and increases total surface area which will cause more demand for water adsorption enhancing LL and PL.
According to the lower moisture content of soil in plastic status, the demand for water adsorption in this status will be more than the liquid status, which would cause enhancing PL faster than LL.
Robert W, Soil Testing Manual: Procedures, Classification Data, and Sampling Practices, Mc Graw-Hill Professional Publishing, California, 2000
Online since: September 2011
Authors: Chen Bing Ouyang, Ying Chen
Figure 1 to Figure 5 respectively shows the material causes of crack, the construction causes of crack, the causes of shedding and hollowing, the causes of water leakage, the causes of frost and condensation.
Of course, by taking these critical construction techniques into account in advance, quality defects of crack, shedding and hollowing, water leakage, frost and condensation can be greatly avoided, benefiting the construction quality and energy saving of building.
Construction environment should meet order requirements, avoiding plastering mortar construction in the winter, raining season and lower than 5℃. 3.21 0.98 Detail treatment Detail treatment should pass professional joint sign.Thermal bridge defect-prone parts are to take a special process. 3.01 1.06 For doors, window openings around and the cross joints, pasting insulation board should be in strict accordance with the requirements of the construction.
If the flatness of the primary wall does not meet the requirements, it should be smoothed by 1:3 cement mortars. 3.07 0.58 To ensure the primary bond strength, wall excessive moisture must be fully dried(general conservation of drying time for the 7 -14d) and wall excessive dry must be watered to moist for one day before using the adhesive. 3.02 1.35 Insulation board installation Full bonding method had better be applied in pasting polystyrene board.
Strengthen management staff responsibility for production quantity control and supervisors check before acceptance, remembering having record. 3.25 0.45 Preventive measures of water leakage Construction Organizing Construction design program must be well prepared and implemented.
Online since: May 2011
Authors: Yan Su, Yue Ting Du, Jia Zhong Wu
(4) Where, f(SS) stands for probability density function (PDF) of slippage factor, In the earthquake cases, it is mainly related to soil characteristics (including unit weight γ, cohesion c, internal friction Angle φ), load, water level, seismic intensity, Pore water pressure.
According to the soil strength theory, parameters what affect the stability analysis of levee earthquake landslide are unit weight γ, cohesion, internal friction Angle φ, earthquake inertia force factor k and water level h.
China Water Conservancy and Hydropower Press, Beijing, 2000, p. 302-343, in Chinese
[3] Chen Jiangping,Sun Xianren:The slope stability analysis based on Monte Carlo method, China Water Transport.
[4] Professional Standards Compilation Group of People's Republic of China: Highway engineering anti-earthquake design code(JTJ 004-89), People's Traffic Press, Beijing, 1989, in Chinese
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