Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: July 2014
Authors: Zhao Yin Zhou, Chang You Zhang
The common problems in rotary drilling cast-in-place pile construction and cause analysis 1.1 Water emitting of steel casing.
The outer wall of the steel casing emits water.
Sometimes the water level decreases suddenly.
Choose and tamp clay which has the optimal water content when embedding the bottom and walls of steel casing; dig a hole in the proper height in the steel casing so as to retain 1-1.5m water head height within it; prevent the bit from hitting the steel casing in rise and fall; fill and tamp the steel casing with clay when it emits water for the first time.
During the construction process, professional technicians’ strict control and master of technology key points are needed, constant experience accumulation, further absorption of advanced technology and craft, guarantee construction quality, and ensure the process of a project and its economic profit.
Online since: April 2018
Authors: Viktor Kreibich, Jiří Kuchař, Vladimir Agartanov, Milan Petřík
The main advantage is the reduction of water consumption in the plant. [2] Fig. 5 Air cooler principle.
All of these occurred in less than 1 year after installation. [6] Drinking Water Distribution Piping systems made of hot-dip galvanized iron are often used in potable water distribution systems.
Plate heat exchanger was cleaned using a Z-phase cleaner which was diluted 1:20 with a water.
PLATE HEAT EXCHANGERS, Chapter (McGraw-Hill Professional, 2010), Access Engineering
API Power Chem 2014 Novotel Twin Waters, Sunshine Coast, Queensland
Online since: October 2011
Authors: Yang Sun, Chun Yu Sun, Guang Chen
Introduction In recent years, the potential of edible films to control water transfer, and to improve food quality and shelf-life, has received increasing attention from researchers and industry.
Materials and methods Film preparation Soy protein film-forming dispersion was prepared dissolving 5 g of soy proteins isolate(SPI) and 2 g of Glycerol, dispersed in 90 ml of distilled water, and pH was adjusted to 8 by adding hydrochloric sodium hydroxide .Before stirring 30 minites at 70 °C, ultrasound treatment (UT) was applied to 100 mL of the film forming dispersion for exposure times ranging from 0 to 20 s were performed by using a UPS200S ultrasonic processor (Hielscher Gmbh, Germany) equipped at a power output of 1000 W, a frequency of 24 kHz.
They observed a detrimental effect of UT on the mechanical properties of films except for the sample treated in a sonication bath for 10 min, for which the improvement of mechanical properties and the increase in film water solubility were observed.
London: Blackie Academic and Professional
Online since: July 2014
Authors: Gunalan Muthu, Subramaniam Shanmugam, Arunachalam R. Veerappan
The other side of the TEG is cooled by passing water at constant temperature with certain velocity, which acts as a heat sink.
The nodal temperatures (Tr, Th,) are found by assuming ambient temperature and initial temperature of water at the inlet of heat sink by using MATLAB simulation.
Parameters Value Parameters Value Area of the receiver plate (m2) 0.1 Ambient temperature, (K) 302 Area of the heat sink (m2) 0.04 Water inlet temperature, (K) 298 Area of TEG (m2) 0.0125 Cold side temperature (K) 300 Wind velocity, (m/s) 2.2 Kins value (W/m2K) 0.05 Optical efficiency of dish 0.7 Kteg value (W/m2K) 2.2 DNI (W/m2) 985.5 K value of receiver (W/m2K) 210 Load resistance (Ω) 1.2 Number of thermocouples 127 Emissivity of receiver plate 0.9 Number of module 4 Results and discussion Table 2 presents numerical data from the exergy analysis of the subsystem and overall system at a particular DNI of 985.5 W/m2.
Cengel, Michael A.Boles, Thermodynamics An engineering approach, McGraw-Hill Professional Publishing, 7th edition,2004.
Online since: May 2012
Authors: Ming Du, Yun Zhang
These two forces, on the one hand haveexpanded the professional scope from garden design to land planning,and from the culture of traditional gardens to the science of ecology; on the other hand, they have turned China into a site of local and international landscape architectural practice, and a site of testing new ways to carrying out planning and design practice.
The Chinese central government financially supported the water quality improvement of Li Lake.
The problems identified by these scientific teams included that ninety percent of the water edge of Li Lake was laid with stones and was too steep to allow shallow water for water plants [11].
In the constructed waterfront, a range of areas are planted with native water plants and with boardwalks passing through them.
Although prohibited for swimming by local authorities at that time because of the water quality, the sandy beach stimulated the willingness to engage with water.
Online since: October 2015
Authors: Marián Kučera, Ján Turis
Determining of water amount in oil There is an exerted opinion in praxis that the warmest state is, when oil doesn´t contain water.
Water in oil decreases its oxidation stability.
For a fast determining of approximate water ratio in the examined oil a characteristic feature of water causing foaming of oil was used.
They were the proof of water presence and its reaction with additives.
With regard to the results of examining of the oil charge in this case it was necessary to recommend to the professional operation of the equipment the exchange of the oil charge.
Online since: January 2016
Authors: Piotr Szymak, Krzysztof Naus, Maciej Chmielak
The subsystem is responsible for safe navigation under and above the surface of water.
Thanks to its compact design, may be launched under various conditions: directly from mainland, from a board of large or small watercraft, in inland and marine waters, river beds, bays or harbors.
Thanks to its specifically construction, it can work at very shallow water, in the quiet zone and allows to access narrow or inaccessible to humans in pontoon places.
The Wi-Fi module is attached with professional omnidirectional antenna 11dBi of gain, operating in vertical polarization.The USV Charybda system ensure trouble-free operation in an area of 2 km.
It is very lightweight: 200g (in air) and only 60g (in water).
Online since: May 2011
Authors: Bin Tian, Xiao Chun Lu, Suo Zhang
Let the potential function of water head is .
The basic equation [4] of water head in the solution region is:
Thus, water head also satisfy the following condition:
Make the vertical position as Y axis positive, the water flow direction as X axis positive and the origin is on the water-level of zero elevation.
[8] The Professional Standards Compilation Group of People's Republic of China: Design code for rolled earth-rockfill dams (China Water Power Press, Beijing 2001),in Chinese.
Online since: December 2012
Authors: Kai Yuan He, Yong Chao Wang, Feng Wang
Because of involving different professions, administer departments and much contents, it results in complicated professional technical integration and coordination management, it is necessary to bring into effect green building for the sake of goal of progress, quality and cost, green technology functions, etc.
The actual effect of green building implemented is displayed by data of operation, management and third-party testing, which involve the building’s power consumption, water consumption, utilization index of non-traditional water etc.
The appropriate management systems and manual are set up, which are energy conservation, water management, supplies management, green management system to develop energy, water and resource conservation-related regulations and the use of appropriate incentives.
Fig.1 The simple solar hot water bottle Operation Label Phase.
For instance, we set up a simple solar hot-water bottle for bath water of the employees with hot water in the course of construction, shown in fig.1.
Online since: May 2013
Authors: Ling Feng Li
Corrosion due to water and other factors[1,4,5,6,7].
The leading action of water in the process of corrosion includes the following[1,4,5,6,7]: 1)Water is the necessary and sufficient condition of electrochemical corrosion.
Hydrogen sulfide and carbon dioxide have high solubility in water.
In a gas-water diphase sour system, water is highly harmful. 3) The Cl- in formation water may generate serious corrosion of metal.
References [1] Wan Renpu: Advanced Well Completion Engineering (Gulf Professional Publishing, U.S. 2011)
Showing 1781 to 1790 of 3745 items