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Online since: January 2010
Authors: Supab Choopun, Thawatchai Phaechamud, J. Mahadlek, J. Charoenteeraboon
Lutrol F127 was slowly added to cold water (4°C).
The pH of formulations was measured (n=3) using a pH meter (Professional Meter PP-15 Sartorius, Goettingen, Germany).
A 5-mL aliquot of gel was transferred to test tubes (internal diameter about 1.8 cm) and immersed in a thermostat water bath at 4°C.
Block copolymer pluronic F127 gel was mentioned to be formed by H-bonding in the aqueous system, caused by the attraction of the pluronic ether oxygen atom to a proton of water [18].
The decrease in solubility of the PPO block of F127 in water would favor micellization and reduce the cmt.
The pH of formulations was measured (n=3) using a pH meter (Professional Meter PP-15 Sartorius, Goettingen, Germany).
A 5-mL aliquot of gel was transferred to test tubes (internal diameter about 1.8 cm) and immersed in a thermostat water bath at 4°C.
Block copolymer pluronic F127 gel was mentioned to be formed by H-bonding in the aqueous system, caused by the attraction of the pluronic ether oxygen atom to a proton of water [18].
The decrease in solubility of the PPO block of F127 in water would favor micellization and reduce the cmt.
Online since: September 2013
Authors: Yu Qing Wang, Peng Fei Zhang, Jian Zhong Li
Based on the above excellent physical and chemical properties of composite materials,its application in coal mine is very broad, now on the application of composite materials in the coal mine are listed below:
The application of composite materials in the coal mine
The application of resin-based composite materials in coal mine
The application of FRP in coal mine
(1) Glass fiber reinforced plastic pipeline laying in underground mines
On the wet coal mine, piping erosion by acidic and water floats, easy to corrosion and scaling, this is the main causes of premature failure of metal pipe.
In the 1970 s, the FRP pipe have used in coal mine and underground for transport coal, water, wind, etc successfully in the United States, west Germany, Japan and other countries.
Reinforcing layer after curing, carbon fiber composite materials can replace pipe material to support pipe pressure because of Carbon fiber composite materials and healant all have high interlaminar shear, excellent corrosion resistance, excellent anti aging performance, low water absorption and good heat resistance performance, thermal expansion coefficient is close to the steel.
Conveyor belt in the belt transmission machine is made by composite materials which is composed of rubber and cord fabric . 2) Water delivery hose and pressure air hose which are used in a coal mine surface and underground are made of composite materials consisted of rubber and fiber cloth. 3) The tape hairdryer used in coal mine and metallurgy mine underground ventilation is commonly used rubber matrix composites product,so is the mineral tape hairdryer used in tunnel engineering and the mining of inclined or vertical shaft ventilation . 4) Coal mine hoisting rope made of composite material not only has the advantages of high strength, abrasion resistance, corrosion resistance, Light weight, soft and so on, but also plays an important role on enhancing the lifting efficiency.
City gas branch of China civil engineering institute transmission and distribution professional committee annual meeting, Shenzhen, 2007
In the 1970 s, the FRP pipe have used in coal mine and underground for transport coal, water, wind, etc successfully in the United States, west Germany, Japan and other countries.
Reinforcing layer after curing, carbon fiber composite materials can replace pipe material to support pipe pressure because of Carbon fiber composite materials and healant all have high interlaminar shear, excellent corrosion resistance, excellent anti aging performance, low water absorption and good heat resistance performance, thermal expansion coefficient is close to the steel.
Conveyor belt in the belt transmission machine is made by composite materials which is composed of rubber and cord fabric . 2) Water delivery hose and pressure air hose which are used in a coal mine surface and underground are made of composite materials consisted of rubber and fiber cloth. 3) The tape hairdryer used in coal mine and metallurgy mine underground ventilation is commonly used rubber matrix composites product,so is the mineral tape hairdryer used in tunnel engineering and the mining of inclined or vertical shaft ventilation . 4) Coal mine hoisting rope made of composite material not only has the advantages of high strength, abrasion resistance, corrosion resistance, Light weight, soft and so on, but also plays an important role on enhancing the lifting efficiency.
City gas branch of China civil engineering institute transmission and distribution professional committee annual meeting, Shenzhen, 2007
Online since: August 2013
Authors: Yue Li, Han Xiao Xie, Yan Li
The government feds back the public opinion and invites professional team and various interest groups and allows community leaders and the public representative to state opinions and integrate useful advices.
2.
The city features positioning of Dongjin New Zone can consider energy of the city, the city of the living water, new Xiangyang of window, a new life distinct etc.
Learn form practice from Singapore city planning features, as "water" "water system", "green" "green skin", "new town" -- "new industry" concept construct Dong jin New Zone.
Under the guidance of master plan as soon as possible to carry out the specialized planning research, especially the first conduct related to safety and security of urban water base development base elevation of Dongjin New Zone field flat and Vertical Drainage Planning.
The city features positioning of Dongjin New Zone can consider energy of the city, the city of the living water, new Xiangyang of window, a new life distinct etc.
Learn form practice from Singapore city planning features, as "water" "water system", "green" "green skin", "new town" -- "new industry" concept construct Dong jin New Zone.
Under the guidance of master plan as soon as possible to carry out the specialized planning research, especially the first conduct related to safety and security of urban water base development base elevation of Dongjin New Zone field flat and Vertical Drainage Planning.
Online since: June 2015
Authors: H. Kamarudin, H. Aimi Noorliyana, R. Azmi, D. Mohd Darus
Higher quicklime’s porosity enables better contact of the quicklime with water and the kinetics of hydration are consequently faster due to the optimum reactivity of quicklime.
Hydrated lime or calcium hydroxide (CaOH) was prepared by digesting CaO in distilled water (CaO: distilled water = 100 g: 400 ml) at ambient temperatures (25 °C) with discontinuous stirring action as corresponding to the standard of the American Society for Testing and Materials (ASTM C110).
After being dissolved, chemical reaction occurred spontaneously between calcium oxide and distilled water which is known as exothermic reaction.
During the hydration process, the temperature value is rising and variation of pH readings are being measured and recorded continuously using a professional benchtop digital pH meter (Trans Instruments, BP3001), respectively.
Hydrated lime or calcium hydroxide (CaOH) was prepared by digesting CaO in distilled water (CaO: distilled water = 100 g: 400 ml) at ambient temperatures (25 °C) with discontinuous stirring action as corresponding to the standard of the American Society for Testing and Materials (ASTM C110).
After being dissolved, chemical reaction occurred spontaneously between calcium oxide and distilled water which is known as exothermic reaction.
During the hydration process, the temperature value is rising and variation of pH readings are being measured and recorded continuously using a professional benchtop digital pH meter (Trans Instruments, BP3001), respectively.
Online since: October 2014
Authors: Elena Sydorova, Alexander Mikhaylov, Ilya Navka
The cutting fluid "Unizor-M" (5%-solution of synthetic "Unizor-M" on the basis of water-soluble oligomers, surfactants, functional additives with the inclusion of corrosion inhibitors and biocides) combines the high cooling and low lubricating properties [2].
The cutting fluid "Ferrobetol-M" (5%-emulsion "Ferrobetol-M" based on vegetable and mineral oils, surfactants, and anti-friction additives) is an oil-in-water emulsion with anti-friction additives and has the high lubricating and low cooling properties [3].
The cutting fluid "EkoEM-1" (5%-microemulsion semisynthetic "EkoEM-1" based on vegetable and mineral oils, surfactants and anti-friction additives) is a semi-synthetic oil-in-water microemulsion with anti-friction additives and has the high lubricating and medium cooling properties [4].
From this we can conclude that the combination of medium cooling and lubricating action or high lubricating and medium cooling action, which provided by a semi-synthetic microemulsions or a semi-synthetic oil-in-water microemulsion with anti-friction additives, is effective.
[9] Caracteristics of carbide grade, Professional grade carbide cutting tools DJET.
The cutting fluid "Ferrobetol-M" (5%-emulsion "Ferrobetol-M" based on vegetable and mineral oils, surfactants, and anti-friction additives) is an oil-in-water emulsion with anti-friction additives and has the high lubricating and low cooling properties [3].
The cutting fluid "EkoEM-1" (5%-microemulsion semisynthetic "EkoEM-1" based on vegetable and mineral oils, surfactants and anti-friction additives) is a semi-synthetic oil-in-water microemulsion with anti-friction additives and has the high lubricating and medium cooling properties [4].
From this we can conclude that the combination of medium cooling and lubricating action or high lubricating and medium cooling action, which provided by a semi-synthetic microemulsions or a semi-synthetic oil-in-water microemulsion with anti-friction additives, is effective.
[9] Caracteristics of carbide grade, Professional grade carbide cutting tools DJET.
Online since: December 2012
Authors: Heng Li, Cheng Yuan Dai, Guang Hua Li
In this method, rich project experience and professional knowledge to be required for the inspection personnel on-site.
Fence cracks, Concrete crack of expansion on the Joint in anchorage zone, Water-proof rubber fracture damaged on the expansion join, Anti-cursor miss the fence, Drain grating missing like these have expressed.
Details just as the Table 1 below: Fig.1 Fence cracks Fig. 2 Concrete cracks of expansion joint in anchorage zone Fig .3 Water-proof rubber fracture damaged on the expansion joins Fig.4 Reflective mark missing fence Table1 Condition and defect evaluation of the bridge deck system of Feng Shihe Bridge (Uplink half frame) Parts name Defect status description (number the expansion joint: in the field, detection in forward is the 0 #, 1 # expansion joint...)
Picture Evaluation Fence Surface of the fence concrete has vertical penetrating crack of 131 articles , and the width of 0.2-0.4 mm average fracture width 0.3mm Fig.1 Good ,second Concrete cracks in anchorage zone of expansion joint 0# expansion joint has horizontal crack of 9 articles , the width of 0.1-0.4 mm average fracture width is 0.25mm Fig.2 Good ,second 1# expansion joint has horizontal crack of 15 articles , the width of 0.1-0.4 mm 2# expansion joint has horizontal crack of 12 articles , the width of 0.1-0.3 mm 3# expansion joint has horizontal crack of 36 articles , the width of 0.2-0.3 mm 4# expansion joint has horizontal crack of 21 articles ,the width of 0.1-0.5 mm 5# expansion joint has horizontal crack of 17 articles ,the width of 0.2-0.3 mm 6# expansion joint has horizontal crack of 26 articles , the width of 0.1-0.5 mm 3 #, 4 #, 5 #, 6 # water-proof rubber fracture damaged on the expansion join Defect degree 57% Fig.3 Drainage system None Better, first Signs, reticle
Described above assessment indicators into continuous universe of discourse: It is described in Table 5 Table 5 Continuous universe of discourse Test items Continuous universe of discourse Type Measured data The width of fence concrete cracks 0mm-0.8mm 0.0-0.2 0.2-0.4 0.4-0.6 0.6-0.8 First type Second type Third type Fourth type 0.3 Concrete cracks of expansion on the Joint in anchorage zone 0.25 Water-proof rubber fracture damaged on the expansion join 0-100% (Defect degree) 0-25% 25-50% 50-75% 75%-100% First type Second type Third type Fourth Type 57% Signs, reticle 100% Diaphragm 27% Wet-joint 33% Main girder 59% Truncated cone banking , slope protection 26% Accordance with the provisions of the grade, the establishment of a fuzzy subset, and be combined through fuzzy relations, Mapping the results to the results of the theory in continuous universe of discourse, and then get the results of the overall assessment of the bridge.
Fence cracks, Concrete crack of expansion on the Joint in anchorage zone, Water-proof rubber fracture damaged on the expansion join, Anti-cursor miss the fence, Drain grating missing like these have expressed.
Details just as the Table 1 below: Fig.1 Fence cracks Fig. 2 Concrete cracks of expansion joint in anchorage zone Fig .3 Water-proof rubber fracture damaged on the expansion joins Fig.4 Reflective mark missing fence Table1 Condition and defect evaluation of the bridge deck system of Feng Shihe Bridge (Uplink half frame) Parts name Defect status description (number the expansion joint: in the field, detection in forward is the 0 #, 1 # expansion joint...)
Picture Evaluation Fence Surface of the fence concrete has vertical penetrating crack of 131 articles , and the width of 0.2-0.4 mm average fracture width 0.3mm Fig.1 Good ,second Concrete cracks in anchorage zone of expansion joint 0# expansion joint has horizontal crack of 9 articles , the width of 0.1-0.4 mm average fracture width is 0.25mm Fig.2 Good ,second 1# expansion joint has horizontal crack of 15 articles , the width of 0.1-0.4 mm 2# expansion joint has horizontal crack of 12 articles , the width of 0.1-0.3 mm 3# expansion joint has horizontal crack of 36 articles , the width of 0.2-0.3 mm 4# expansion joint has horizontal crack of 21 articles ,the width of 0.1-0.5 mm 5# expansion joint has horizontal crack of 17 articles ,the width of 0.2-0.3 mm 6# expansion joint has horizontal crack of 26 articles , the width of 0.1-0.5 mm 3 #, 4 #, 5 #, 6 # water-proof rubber fracture damaged on the expansion join Defect degree 57% Fig.3 Drainage system None Better, first Signs, reticle
Described above assessment indicators into continuous universe of discourse: It is described in Table 5 Table 5 Continuous universe of discourse Test items Continuous universe of discourse Type Measured data The width of fence concrete cracks 0mm-0.8mm 0.0-0.2 0.2-0.4 0.4-0.6 0.6-0.8 First type Second type Third type Fourth type 0.3 Concrete cracks of expansion on the Joint in anchorage zone 0.25 Water-proof rubber fracture damaged on the expansion join 0-100% (Defect degree) 0-25% 25-50% 50-75% 75%-100% First type Second type Third type Fourth Type 57% Signs, reticle 100% Diaphragm 27% Wet-joint 33% Main girder 59% Truncated cone banking , slope protection 26% Accordance with the provisions of the grade, the establishment of a fuzzy subset, and be combined through fuzzy relations, Mapping the results to the results of the theory in continuous universe of discourse, and then get the results of the overall assessment of the bridge.
Online since: April 2020
Authors: Kateřina Kučová, Veronika Glogarová, Monika Tichá, David Takač, Barbora Lyčková, Radmila Kučerová
Introduction
At present, we are overloaded with pollution which is not only visible but also with pollutants contained in the air, water and soil.
It retains water well which facilitates water supply to plants during summer months; the contained calcite optimises pH of the soil.
It was implemented with the help of X-ray fluorescence spectrometry on machine Innov-X DELTA PROFESSIONAL.
Then the plants were watered immediately after their planting and then it was checked and repeated (when necessary 2 – 3 days in average).
It retains water well which facilitates water supply to plants during summer months; the contained calcite optimises pH of the soil.
It was implemented with the help of X-ray fluorescence spectrometry on machine Innov-X DELTA PROFESSIONAL.
Then the plants were watered immediately after their planting and then it was checked and repeated (when necessary 2 – 3 days in average).
Online since: October 2013
Authors: Dragos Ronald Rugescu, Radu D. Rugescu, Radu Sapunaru
Professional solutions, involving standard flow-meters, can be used for measuring such mass flow rates, still related to elevated costs.
For security and work protection reasons a water tower with a minimal capacity of 71 m3 is to be built, with an associated cost estimate of $75,000.
This construction also includes a water supply facility based on deep water stink which will provide water resources for the entire establishment.
For security and work protection reasons a water tower with a minimal capacity of 71 m3 is to be built, with an associated cost estimate of $75,000.
This construction also includes a water supply facility based on deep water stink which will provide water resources for the entire establishment.
Online since: June 2014
Authors: Fei Deng, Ke Yan Wang, Wen Jun Ding
permanent
(a) (b)
Fig 1 (a) the structure diagram of the rocking energy convertor
(a) the mooring mode diagram of the UUV
The principles of the rocking energy convertor are as follow:
(1) When the UUV requires energy supply, the UUV is controlled to state near the water surface through adjusting the heave buoyancy mechanism.
Then the anchors is dropped from head and tail of the UUV, them will horizontally tether the UUV near the near water surface.
The UUV will be turbulent by ocean wave in the near water surface.
Their expression can refer to the relevant professional books and references to establish[12-14].
Northwestern Polytechnical University Professor Song has done some research of the impact of the UUV by the wave, when UUV hovers near the water surface .
Then the anchors is dropped from head and tail of the UUV, them will horizontally tether the UUV near the near water surface.
The UUV will be turbulent by ocean wave in the near water surface.
Their expression can refer to the relevant professional books and references to establish[12-14].
Northwestern Polytechnical University Professor Song has done some research of the impact of the UUV by the wave, when UUV hovers near the water surface .
Online since: November 2012
Authors: Lin Wang, Jing Hai Zhu, Zhong Qiang Ma
Thickets, forests, farmland and waters in Beipiao with more rivers and gentle mountains provide rest and nutrition condition for birds.
Typical effects in the period of construction, include noise, dust and waste water from construction machinery and transportation vehicles which will disturb original living environment of the birds which make the birds within the scope have no way for feeding, nesting and breeding.
As a mandatory, the wind turbine layout should be at a distance of greater than 500m from the borderline of secondary protection areas of white stone reservoir drinking water sources which is habitat and feeding location for the birds.
In specific projects, the wind turbine layout and transmission line selection should be at a distance of greater than 500m from the borderline of secondary protection areas of white stone reservoir drinking water sources.
The emergency aid should be implemented by professional functionaries for bird observatory.
Typical effects in the period of construction, include noise, dust and waste water from construction machinery and transportation vehicles which will disturb original living environment of the birds which make the birds within the scope have no way for feeding, nesting and breeding.
As a mandatory, the wind turbine layout should be at a distance of greater than 500m from the borderline of secondary protection areas of white stone reservoir drinking water sources which is habitat and feeding location for the birds.
In specific projects, the wind turbine layout and transmission line selection should be at a distance of greater than 500m from the borderline of secondary protection areas of white stone reservoir drinking water sources.
The emergency aid should be implemented by professional functionaries for bird observatory.