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Online since: January 2009
Authors: Vytautas Grigas, Aurelijus Domeika, Danguole Satkunskiene, Alexandra Legha, Rymantas Tadas Toločka
The inertial/pneumatic loading units (turbines with the flywheel, moved by belt or chain drive, for example, "Concept II"), and rowing simulators, where the athletes exercise by rowing a boat fixed in the pool, are used in the professional area.
Motions of rowing and its parameters The rowing stroke is made primarily of four phases: 1) the catch (compression of the body and smooth placement of the oar in water, rapid entry into the water and immediate power generation); 2) the drive: leg emphasis (maximal power generation from the legs); body swing emphasis (as the knees continue through their extension the hip and back are extended and the arm-pull begins); arm pull through emphasis (the upper extremities are forcibly contracting to finish the drive); 3) the finish (the knees remain extended and the ankles remain plantar flexed, while the hips finish extending); 4) the recovery (extension of the arms, followed by the flexion of the truck, once the hands have cleared the knees, the slide starts to move forward).
The rowing force and parameters of movements during the exercises on training facility Concept II, an academic (sculling) rowing simulator in the pool of Lithuanian Academy of Physical Education and real academic rowing in the Birstonas water sports base on river Nemunas have been measured experimentally.
The on water training motion parameters were measured by means of Motion capture system and the rowing force was measured by using wireless equipment provided by "Baltec CNC Technologies" (Kaunas, Lithuania), consisting of the strain gauge type force sensor attached to the oar, data processing block and portable PC with software for measurements and data processing.
Online since: November 2011
Authors: Jian Qing Wang, Jie Meng, Cheng Sun, Xiao Xiu Hao, Xin Ni Mu
Synthesis and Fluorescent Property of Europium-Doped Complexes with P-Anisic Acid and Thenoyltrifluoroacetone MENG Jie1,a , SUN Cheng1,b, HAO Xiaoxiu1,c, MU Xinni1,d, WANG Jianqing2,e 1 Tianjin Professional University, China 2 Tianjin University of Science & Technology, China a jessymj@163.com; b chengsun55@sina.com; c haoxx888@sina.com ; d muxinni@163.com e jianqw@tust.edu.cn Keywords: Rare-earth complex; Doped complex; Fluorescent property Abstract.
WH7401-50B type electric mixer; Heating temperature water-bath; Electronic analysis balance; C, H, N element analysis were determined by vario EL type element analyzer ; Eu, Gd content were determined by inductively coupled plasma emission spectrometer ; Infrared spectrum were determined by HBRUKER TENSOR and Fourier infrared spectrometer, KBr pressure; Fluorescence performance were determined by RF-5301 fluorescence spectrophotometer Synthesis of EuxGd(1-x)(POA) (TTA)2Phen doped Complexes.
According to the mole ratio of 1:2 , mix Eucl3 and Gdcl3 solution and TTA , adjust pH value to 5.5, water bath heating, mixing 40 min, then according to the EuxGd(1-x)(POA)(TTA)2Phen chemical formula proportion added Phen, POA to the reaction mixture , adjust pH value to 7.0, turn into the airtight container, 120°C temperature reaction 8h, then cooled to the room temperature, followed by filtration and wathing with distinction water and 95% ethyl alcohol , then dried to get series doped products.
The series doping complexes are light yellow solid powder, insoluble in water, ethanol and methanol, soluble in dimethyl sulfoxide, DMF solvents.
Online since: September 2014
Authors: Márcio Roberto da Rocha, Elídio Angioletto, Erlon Mendes, Carolina Resmini Melo, Alexandre Canarin Madeira, Aline Merlini, Maria Glória Santos, Luciana Onofre Vieira
The synthesis of zeolites is normally performed under hydrothermal conditions, consisting of a compound of crystallization from a nutrient (amorphous or crystalline) in the presence of water and a mineralizing agent.
In the metakaolin/water was equal to 286 (mass/volume).
Auroux, The adsorption of nicotine from aqueous solutions on different zeolite structures, Water research 44 (2010) 2047–2057
Patrick, Adsorption of tetrachloroethylene (PCE) in gas phase on zeolites of faujasite type: Influence of water vapour and of Si/Al ratio, Original Research Article Microporous and Mesoporous Materials 111 (2008) 334 – 342
Upper Saddle River, NJ: Prentice Hall Professional Technical Reference, 2003. 1052 p.
Online since: July 2011
Authors: De Ping Ge
Energy consumed by materials like brick, tile, steel, glass accounts for 50% of the global energy and 50% water resources, 40% raw materials, 80% agricultural land loss producing 50% of air pollution, 42% greenhouse gases, 50% water pollution, 48% solid waste, 50% the CFC compounds "[2].
It is the optimization of glass greenhouse, buoyancy ventilation, solar water heating, skylights, lighting and other technology.
Green residential design provides a healthy and comfortable environment for human beings and saves resources like energy, land, water and materials).
[4] Professional Training Institute of Ministry of Housing and Urban-Rural Development.
Online since: August 2013
Authors: Xin Hua Hou, Di Hui Lai
Land saving and energy use Including site location, planning, settlement's greening rate Save material and energy use Including control the harmful material, cycle material using, selection of interior decoration material, etc Save water and energy use Including planning of whole water system, water saving rate and landscape water design, etc Indoor environmental quality Sunshine of room, lighting, noise control, content of air harmful substance, etc Demonstration effect Exemplary Typicality The effect of demonstration projects of related technology, each technology take their own advantage, also promoting related technical advantages into play Promotional Possibility of technology used in this project promote to other areas Participation The level of government participation Supervision system and supervision investment of government in demonstration project The level of scientific research unit participation Personnel and time investment of scientific research unit in demonstration
It can be divided into two categories: professional model and decision making model.
Online since: December 2012
Authors: Zhong Gen Li, G.Y. Zhou, Fei Du, Gao Su
Collecting card and professional image collecting software are used to save the flame image in the industrial PC and images information can be used to study optimization of combustion control technology in furnace. 1.2 Conception and Calculation of RES RES stands for radiant energy absorption of unit area.
The heat absorption of raiser tube increase, while steam production in steam-flow diagram increase, and saturated water changes into steam with it, that leads to a steep rise of drum pressure.
As time goes on, water which is not saturated before becomes saturated now because of rapid decrease of pressure and saturation temperature decline.
Saturated water in drum becomes steam gradually; there is more steam produced in raiser tube going into drum to compensate steam in the above of drum.
Experimental detection of Radiative Energy Signal from a supercharged marine boiler and simulation on its application in control of drum water level[J].
Online since: January 2012
Authors: Hung Ren Hsieh, Fang Jyun Yeh
On the contrary, “climbing plant supports” and “watering facilities” are used less.
l The maintenance and management personnel’s lack professional knowledge: Because the green facades are not usual school facilities in Taiwan, the maintenance and management personnel indicate that they do not know how to carry out daily maintenance and management for watering facilities and climbing plant supports.
This results in them not being able to complete the maintenance and management works and can only carry out cutting, watering and cleaning works for the plants.
Watering facilities.
We should planting and choosing appropriate planting types to avoid the need to establish watering facilities in order to decrease the maintenance work amount and expenses.
Online since: November 2013
Authors: Chao Lv, Ya Nan Wang, Shi Ming Wang, Ka Tian
And we choose water as working medium, and used velocity_inlet which gave 2m/s flow rate, pressure_out, symmetry boundaries.
These also helped momentum transferring between surrounding water and the tail flow.
[5] Zhou Junbo,Liu Yang,et al.FLUENT6.3 flow analysis from novice to professional [M] .Beijing:China machine press,2011
[6] Wang Shiming, Zhang Fuxi,Hu Qingsong,Wu yue,”Analysis of the water impeller hub radius of a wave power generator based on fluent[J], Shangdong University(Engineering Science),2012,42(2):64-70
[7] Wang shiming,Zhang Fuxi,Hu Qingsong.”wheel blade angle design of the fluent-based water power plant”,ship engineering,2012,33(4):80-84.
Online since: February 2019
Authors: Voldemar Muktepavel, Victor Murzin, Vyacheslav M. Karpov, Artur I. Kurakin
Experiments have been performed to determine the value of the arc breaking length of electrodes when welding under water.
Paraffin is applied for the purpose of electric and water proof reasons.
The process of bead forming under the water.
Welding arc is ignited under water and burns to a natural breakup.
The welding operator should be a high-quality professional. 3 The best elasticity of the welding arc for underwater "wet" welding is recorded for EPS-AN1 electrodes; UW-EZ-2 electrodes by BrocoUnderwater have good elasticity, and LKI-1P have the worst one (because of the high content of fluorides).
Online since: May 2012
Authors: Lu Peng, Zhong Yan, Song Lin Wei
GLP project was sponsored by local government, and its project team included of related departments and professional elites, showed a high level of internal support, coordination and cooperation.
This project can protect effectively water safety and restores water environment.
These areas were analyzed to identify its many components from water sensitivity zones and sensitive biological areas.
These protection strategies in first phase of work included: -Protecting natural water resources and conserve potable water; -Integrating natural resources such as mountain, water, farmland, wood, etc.; -Maximizing diversion of waste from village; -Conservation, restoration and enhancement of ecological habitat to reflect the local natural heritage and enhance biodiversity.
Fig.6 Design sketch shows ecological water edge and protection the existing trees.
Showing 2171 to 2180 of 3745 items