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Online since: August 2014
Authors: Ya Chong Liu, An Kang Hu, Chun Hui Wang, Feng Lei Han
The method of the determination of design wave system 1.1 Summary of the loading procedures Applicable cargo loading conditions specified for fatigue calculations are analyzed through: a) The computation of the characteristics of the finite element model with still water loads b) The selection of the load cases which are critical for the strength of the resistant structural members The determination of the design wave characteristics for each load case includes the following steps: a) Computation of the Response Amplitude Operators and phase of the dominant load effect b) Selection of the wave length and heading c) Determination of the wave phase, so as the dominant load effect reaches its maximum d) Computation of the wave amplitude corresponding to the design value of the dominant load effect. 1.2 The design values of long-term predict The wave load prediction can be divided into short-term and long-term prediction.
Calculation of Wave Loads for fatigue assessment 2.1 Finite element model 9200TEU large scale container ship’s fatigue strength assessment finite element model is built entirely in accordance with the relevant professional design drawings, and the processing and analysis operations is completed by commercial finite element software MSC/PATRAN and NASTRAN.
[6] Yoshimi Goda, Design wave height selection in intermediate-depth waters, Coastal Engineering, Volume 66, August 2012, Pages 3-7
Online since: August 2013
Authors: Wei Chun Lv
Analysis of current situation Nowadays, college students have various comsumption tyes, such as dining, shopping, purchasing water and electricity, surfing on the net, seeking medical advice and ect.
With the wallet function of campus card, the carrier could consume at various comprehensive comsumption sites, for example, dining at the dining hall, purchasing in the supermarket, bathing in the bathroom, self-help washing, surfing on the net, paying fines of overdue books, self-help purchasing water and electricity.
The Design and Implementation of Campus Smart Card System in Hangzhou Academy of Scientific Professional Technology[D].
Online since: April 2013
Authors: Samion Syahrullail, Jazair Yahya Wira, W.N. Fawwaz, Wan Nik Wan Mohd Norsani
The production and use of non-toxic, biodegradable lubricants has become a major issue, especially when the lubricant involved will come into contact with soil, crops or ground water.
Biodegradability is the ability of a substance to be decomposed by the action of bacteria into CO2, water and mineral compounds.
[3] A.R.Lansdown, Lubrication and Lubricant Selection, Professional Engineering Publishing Limited, United Kingdom, 2004
Online since: May 2012
Authors: Han Mo Tan, Guo Hong Dai, Zi Qiang Zhou
The landfill of the ELVs will cause a lot of environmental problem such as soil pollution, water pollution and air pollution.
By the way, the water and rail is suitable method for the ELVs transportation because of its economy.
At the professional remanufacturing factories, the qualities and the cost can all be controlled according to the criterion.
Online since: August 2012
Authors: Dong Xu, Ya Jun Wu, Xue Ying Wang
In general, direct benefit type and attached sun room type in operability are relatively simple, are easy to be accepted by the farmers, the construction can be completed, but also easy to achieve the effect, but to collector-storage wall, relative technical content higher, the farmer is difficult to independently accomplish, to professional and technical personnel in the guidance in order to meet the requirement, is not conducive to popularization.
In order to reduce the influence of window wall, window section form of slight changes, in order to increase the amount of sunlight incidence.As shown in Figure 4, the windows in the plane and profile do wipe angle processing, in the same window area under the premise of improving the rate of sunshine projection.But in the window profile on the plastering angle, should pay attention to the water treatment, lest it should rain, rain Shun wipe corner windows or into the indoor pollution.
Summary Solar energy as a low-cost non-polluting renewable energy, applied in cold regions of rural residential buildings in winter heating and domestic hot water has better social benefit and economic benefit.Both the improvement of the living environment of rural residents, improve life quality, but also save the energy, reduce the pollution of the environment.At the same time, alleviate the state of insecurity of the sources of energy, applied perspective is wider.This paper mainly cold rural passive solar heating application of the relevant analysis, use of passive solar house to absorb solar energy, this is the most simple one way.Because of its simple structure, low cost, more suitable for development in rural areas of application, development prospect.
Online since: August 2006
Authors: Sang Jin Lee, B.S. Jun, Gary L. Messing
In the combustion method, an oxidizer such as metal nitrates is mixed with a fuel such as amides, hydrazides carboxylates, etc. in a solvent, commonly water, and upon heating at low temperature range from 60°C to 500°C, the products of decomposition from the oxidizer and fuel mixture are ignited spontaneously to produce temperatures up to 2,000°C [1,2].
Inc., USA) as an oxidizer and carbohydrazide (CH6N4O, 97%, Acros Organics, New Jersey, USA) as a fuel with the mole ratio of 1:1.875 in distilled water The ChemSage thermodynamic program (Version 4.1, GTT's Technical Thermochemistry) was used to calculate the equilibrium species-formed from the oxidizer and the fuel during heating.
London New York Blackie Academic & Professional [13] Reist P C 1993 Aerosol Science and Technology 2nd Ed.
Online since: October 2012
Authors: Xiao Feng Cai, Hong Tao Zhang, Cheng Bin Lio, Hong Rong, Xiang Zhu, Zhi Zhong, Lei Zhang, Deng Wei Gong, Zheng Tang Ji, Wei Jiang Cai
This paper, starting from the professional point of view of turbine governor and according to various data in the test, presents a preliminary analysis of results in combination of various tests competed after Xiaowan Power Station 700MW hydropower unit speed governor was put into island mode operation after the Chu Hui direct current line was off-stream (trial).
All these require dynamic testing and analysis of the real machine. because there is no previous experience to follow for control strategy, control algorithm and control parameters of turbine speed governor in this operation mode, the professional team on speed governor of the State Grid Electric Power Research Institute has cooperated with the technical team Huaneng Lancang River Hydropower Co., and they have done a lot of useful attempt and exploration and has achieved initial success in the second phase of the trial (DC power 1600MW). 3.
The correspondence between no-load opening and head of Xiaowan Power Station is as follows: Table 1: The no-load opening which matches the seven heads Governor of Xiaowan Power Station Water head (m) 150 181 199 216 227 239 251 No-load opening (%) 22.5 17 16 15 14 13 12 In the power state of the speed governor and in the mode of connecting to the big gird, the dead zone is set to ± 0.05Hz.
Online since: November 2011
Authors: Hong Zhang, Gui Gan Fang, Hua Zheng, Yuan Heng Guo, Kun Li
It is an anthraquinone derivative, mainly existing in the lac insect body, which can be washed out by water in the lac processing due to soluble in water, and then fine processing [1].
Chemical Reagent Factory); pure water: self-prepared in laboratory 1.2 Instruments and equipments DU 800 UV - visible spectrophotometer (U.S.
Beckman Coulter); CPC-505(SMART); Professional pH / Conductivity / Ion / Dissolved Oxygen Meter (SMART); AB204-S Precision electronic balance (Mettler Toledo (China) Limited) 1.3 Method 1.3.1 Determination of the lac dye and ascorbic acid on DPPH· scavenging activity Prepare the DPPH· ethanol solution of mass concentration 39.40μg/mL, appropriate mass concentration of lac dye solution and ascorbic acid solution.
AVC0 is the absorbance of the mixed DPPH· ethanol and pure water solution; AVCi is the absorbance of the mixed DPPH· ethanol and ascorbic acid solution.
A0i is the absorbance of the mixed solution of 2mL Tris-HCl buffer, 1mL pure water and 1 mL pyrogallol solution; ARLi is the absorbance of the mixed solution of 2mL Tris-HCl buffer, 1mL lac dye and 1 mL pyrogallol solution; AVCi is the absorbance of the mixed solution of 2mL Tris-HCl buffer, 1mL ascorbic acid and 1 mL pyrogallol solution.
Online since: February 2013
Authors: Imrich Kiss, Vladimír Sedlák
Relevant data sources are mainly in Slovakia: Slovak Hydrometeorological Institute, which provides meteorological and hydrological forecasts and warnings, weather analysis, weather history, emissions, air quality, Slovak Water Management Enterprise, sp, which indicates the flow conditions and water resources.
Moreover, due to the complexity of the functions are GIS applications to modeling flood situation almost ideal for a wide range of flood protection at the professional and scientific work analyzing the myriad of landscape indicators for floods.
The first phase of flood modeling using raster calculator option creates a new layer in the format specified GRID reflecting elevation of water level of the river.
This procedure is defined in the following steps the increasing water level of water flow, but that still does not reflect the course of the river bed and thus determines only the area of potential flooding hazards due to a lower altitude values than the given height level.
This form of the model shows the flood risk areas around the river in question set specific elevation of the water surface.
Online since: September 2011
Authors: Da Wei Cheng, Ya Sheng Luo, Li Guo Yang, Xi Chen
It suffers gas pressure within the specimen and suffers water pressure, transformed by the gas pressure, outside the specimen.
Respectively imposing different size of water and gas pressures, the specimen produces the corresponding radial stress σr.
Measured by the standard compaction test, the maximum dry density of the loess is 1.60 g/cm3, the optimal water content is 19.7%.
By water film-transfer method, the water content of compacted loess sample is controlled at 19.7%, and conserves in the conservation tank for 3 days.
(in Chinese) [12] The Professional Standards Compilation Group of People’s Republic of China.
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