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Online since: December 2014
Authors: Barbora Pjurova, Jarmila Drozdova, Dalibor Matýsek, Eliska Hrynysinova
EPA method 6200:2005 Field portable X-ray fluorescence spectrometry by X-ray fluorescence spectrometer Olympus Innov X, Model DELTA PROFESSIONAL.
Prior to the test, water holding capacity (WHC) in control and soil-biochar mixtures were assessed gravimetrically.
(Universitat Autònoma de Barcelona) for providing the material support, professional advice and assistance during the implementation of ecotoxicological assays.
Skrobankova: Ecotoxicity of sewage sludge from waste water treatment plant.
Ok: Biochar as a sorbent for contaminant management in soil and water: A review.
Online since: September 2013
Authors: Yi Shun Zhang, Chang Liang Shi, Yuan Yang Liu, Ling Zhang, Fei Yue Wang
Using RNG K-ε two-equation turbulence model and Swirl Dominated Flow model respectively, and the top speed of different feeding liquid two-phase flow of water under medium CFD numerical simulation results grader internal flow field characteristics.
Effective separation of fine coal has been a hot research[4,5].The Cone Hindered Settling Hydro-sizer is based on hindered settling and fluidization, developed for fine coal classifying equipment[6,7].Based on Teeter Bed Separator, the Cone Hindered Settling Hydro-sizer take advantage of water flow characteristics to achieve the fine coal classification.
The bottom water of the classifier is given by the Constant pressure tank and central water from the pump to entry, which produce different size fractions of fine coal grading, hindered settling rate greater than the speed of particles into the bottom of the underflow, while the flow of the coal settling velocity less than the increase into the overflow. 2.2 The numerical simulation of the Cone Hindered Settling Hydro-sizer 2.2.1 Different traces under different feeding speeds Fig.2 The traces of particles at 5m/s feeding speed Fig.3 The traces of particles at 3m/s feeding speed From Fig.2 and Fig.3, the feed inlet velocity is small, the turbulent classifier less beneficial for classification process.
Acknowledgements This work was financially supported by the Mineral Processing Engineering, National Professional Characteristics(TS12245), and Henan Polytechnic University crosswise tasks(H12-468).
Online since: May 2012
Authors: Hai Feng Wang, Zhong Hua Peng
Current pollution situation of Xiawan stream 1.1 Surface water of Xiawan stream According to the results of water quality monitoring in 2009, using pollution water releasing principle, there are Ammonia, suspended solids, chemical oxygen demand, biochemical oxygen demand, fluoride, phenol and Phosphorus in the water and all of them are exceeded.
Based on current heavy metal pollution situation of Xianwan stream, combine the treatment strategy, follow methods could be considered: firstly, water flow of Xiawan stream need to be cut off and change direction, and then, clean the silt one section after the others, the silt should be transfer to professional factory to make it stable and the water which come from this process need to be deal with also.
In the area where the surface water is wild, wetland can be design to purify the water and provide places for leisure and entertainment. 3.1.3 Longitudinal design of channel Length of Xiawan stream is 4.26km, width is 4-10m and depth is 0.5-1.5m, the measure of water area is 11.85km², average flow is 4.3m³/s, the water ecological environment is closed and flow is slow.
Rebuild the green infrastructure can use plants to clean the water.
Water area can be widen in some open water location, combine relative technology to create biological pond and choose the plants such as such Water hyacinth, water celery, rye grass, cattails and other which can absorb the heavy metal elements.
Online since: August 2021
Authors: Zacharias G. Pandermarakis, Nikolaos D. Nikoloutsopoulos, Sofia P. Nikolopoulou
Strength of Polypropylene Fiber Reinforced Cement Mortar Composites with Variable Water/Cement Ratio N.D.
In this study, PP fiber reinforced mortars were prepared with specific composition but with variable water to cement (W/C) ratio and appropriate superplasticizer amounts.
For all compositions the cement to aggregates ratio was constant (1:3), whereas the water to cement ratio (w/c) was varied from 0.50 up to 0.70 parts per weight.
The water used was drinking water and came from municipal water network.
Monteiro, Concrete: Microstructure, Properties, and Materials, third ed., McGraw-Hill Professional, New York, 2005 [11] EN 13139, Aggregates for mortar, (2013) [12] ASTM C1437, Standard Test Method for Flow of Hydraulic Cement Mortar (2015) [13] EN 1015-7, Methods of test for mortar for masonry.
Online since: March 2013
Authors: Feng Jiang Qin, Jie Dai, Min Zhao, Jin Di, Wen Ru Lu
., the dual-wall steel cofferdam is being widely applied to the deep water bridge foundation engineering [1].
Fig.1 Overall arrangement of dual-wall steel cofferdam (dimension unit: cm; elevation unit: m) Construction Technologies Steel was processed by professional steel structure manufacture, and assembled on site.
The second layer was symmetry assembled used the floating ability of the first layer, and sank by adding water.
Water concrete in blade angle was poured after cofferdam had been implantation.
When the height of pier was 4.5m, the water would be added to 56.74 m level.
Online since: September 2011
Authors: Yuan Bao Leng, Rui Wang, Yang Zhou
Using Finite Element Method (FEM) and professional software such as ANSYS, we can build the 3D model embankment to do conversion researching.
Table 1 The Characters of Typical Erosions Types of Erosion The Characters Hole, Weak structure Isolated, high resistivity Hole and Weak structure fill with water, Weak structure, small seepage Isolated, low resistivity Crack, Weak layer Outspread, high resistivity Interface of water, Crack fill with water, Rich water layer Outspread, low resistivity Wenner, Pole-Pole, Dipole-Dipole and Pole-Dipole are most widely used resistivity imaging arrays.
Online since: November 2013
Authors: Hua Rui Wu, Wen Xue Tan, Xi Ping Wang
Heretofore, performance of the well-known native Uncertainty Reason Resolution method still is unsatisfactory to professionals.
Studies on morphological and chromosome karyotype of 2 pelteobagrus species in the Yuanshui and Lishui rivers of Dongting lake water systems in Hunan province[J].
Online since: February 2011
Authors: Chun Xia Wu, Xiao Dong Zhou
OpenGL is a professional 3D program interface, is an underlayer 3D graphics library that has powerful function and is easy to transferring.
Steps of one circling by the right hand Right hand Entering water - catching water 0.62(33.3%) Formation of high elbow 0.2(10.75) High elbow’s catching water 0.36(19.35%) Pushing water 0.14 (7.5%) Recovery of the arm in air 0.54(29%) 1.86S . 3.
Steps of one circle by the left hand Left hand Entering water - catching water 0.6 (30.93%) Formation of high elbow 0.2 (10.31%) High elbow’s catching water 0.364 (18.76%) Pushing water 0.18 (9.29%) Recovery of the arm in air 0.5 (25.77%) 1.94S 4.
The effective working time of the left hand (high elbow’s catching water + pushing water) is a little greater than that of the right hand.
A: Left wrist’s stretching forward B: Formation of high elbow C:High elbow’s catching water D:Right wrist’s stretching forward E:Downward press F:Formation of high elbow G:Catching water H:Pushing water 5.
Online since: September 2018
Authors: Alexandra M. Vorobyeva
For example, the Renaissance regular parks in Italy, terraced on steep terrain and decorated with various architectural forms, water devices, stairs, grottoes and many decorative elements, were called "architectural gardens".
The basis of the artistic image of the park is the cross-shaped water channel.
In Kiev there was a water-parks diameter with a number of parks and embankments crossing the city along the floodplain of the river; in St.
At first, the acces to the water area of ​​the impoundment was blocked for residents of the northern residential area by construction the water park "Osminozhek" on the axis of the green wedge.
The state policy of reviving public spaces and courtyards revealed the lack of professionals in the field of landscape design in the country.
Online since: July 2012
Authors: Jian Qi Sha, Wei Lian Wang, Le Sheng He, Ji Hong Shi, Zhe Xiao
Hardware Design of Intellectualized Water Meter with Six Jianqi SHAa Zhe XIAOb Weilian WANGc Lesheng HEd Jihong SHI* a, b, c & d, School of Information Science & Technology, Yunnan University, North Cuihu Road, Wuhua District, Kunming, 650091, Yunnan, China Keywords: water meter with six; Meter Bus; modulation-demodulation principles; hardware design Abstract.
Acknowledgements First, I’d like to show many thanks to my supervisor Jihong SHI, Professor Weilian WANG and Instructor Lesheng HE for helping with the professional technological knowledge.
Water Meter Networking Meter Reading System Based on M-Bus[J].
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