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Online since: March 2015
Authors: Ping Lv, Wen Yu Shi, Hong Zhu, Tong Cun Zhang
Tianjin professional college Keywords: molecularly imprinted polymer (MIP), solid phase extraction, hypocrellin, separation and purification Abstract.
Type Proportion (V/V) 1 Ethanol/water 1:1 7 Ethanol/acetone 3:1 2 Ethanol/water 3:3 8 Ethanol/acetone 2:1 3 Ethanol/water 1:0 9 Ethanol/acetone 1:1 4 Acetone/water 1:1 10 Ethanol/acetone 1:2 5 Acetone/water 3:3 11 Ethanol/acetone 1:3 6 Acetone/water 1:0 Desorption of different eluents for hypocrellin A and B is as shown in Figure 2 from which it can be seen that the optimum eluent for hypocrellin A is No.9 (ethanol/acetone, 1/1); while for hypocrellin B, the optimum eluent is No.7 (ethanol/acetone, 3/1) (see Fig.3).
Online since: April 2025
Authors: Iryna Davydova, Ruslan Boyko, Mariia Korbut, Nataliya Vronska, Myroslav Malovanyy
- Soil and water pollution.
When decomposing, these waste poisons air, soil, and underground water and thus create a serious danger for the environment and people.
Clarification of objectives, preparation of action plans Involvement of key persons Involvement of local chief executive, community leaders and farmers Cooperation with stakeholders Cooperation with business associations, agricultural associations, women's associations Allocation of personnel Designation of departments and officers in charge Collection of information Interviews with experts on composting technology and agriculture Study of select cases Visits to sites and interviews with key persons Review of case studies Study on the feasibility of separating organic waste at source in the model area, verification of the effectiveness of compost on agriculture Organization of explanatory meetings Arrangement of periodic briefings for residents and other stakeholders Implementation of public relations campaigns Distribution of information on composting projects in local magazines, websites, SNS, and personal communications Organization of lectures by experts Arrangement of scientific lectures by professionals
Mukha, "Journal of Water and Land Development," vol. 45, no.
Online since: February 2013
Authors: Chang Wei Kang, Arthur Teck Bin Lim, Te Ba
Single phase (water) flow is modeled with a normal mass flow rate and rotation speed.
References [1] T.Gabor: Electrical Submersible Pumps Manual: Design, Operations, and Maintenance, Gulf Professional Publishing, MA, USA (2009)
Online since: October 2010
Authors: Xiao Ge Li, Xing Bin Ma, Shu Yan Gong
The existing chain of Yulin coal chemical industry has brought a lot negative external effects to the local, mainly in the destruction of the environment: first,the damage to local ecological environment, first of all is water pollution.
Water in Yulin Energy Development Zone was polluted seriously, the 9 in 11main rivers was polluted by different levels, suspended particles over the surface of water increased by nearly a hundred times before development.
Enterprises should actively take forms to introduce foreign investment and coal chemical industry professionals, promote the development of local coal chemical industry.
Online since: July 2011
Authors: Jian Guo Chen, Min Chen, Xin Xin Cheng
Introduction Green building refers to the buildings which economize resources (energy, land, water and materials), protect the environment and reduce pollution, providing people with health, suitable and efficient use of space, and are in harmony with nature through its life cycle [1].
M.H.Issa, J.H.Rankin et al. [6] conducted a survey between 1200 LEED accredited professionals in Canada to investigate practitioners’ perception of green building and the results showed that high cost premiums was the primary barrier to investing in green practices while energy cost saving was the most important type of savings incurred in green buildings.
In order to meet the energy, water and other environmental requirements of green building, the selection of materials will be stricter.
According to the research conducted by William Bradshaw, green building can save electricity about 38%, water about 34% and gas about 35% on average [10].
Online since: December 2011
Authors: Han Min Tian, Rui Xia Yang, Feng Lan Tian
The integration of such systems usually requires the advice of professional civil engineers, architects and PV system designers during the design of the system and the building.
Experimental section The conductive glass FTO (surface resistance of 30Ω / □, a thickness of 2.2 mm) was ultrasonic cleaned with a mixture of common washing detergent and household cleaning surfactant for 20 minutes, then rinsed with plenty of water.
Then, FTO sheets were ultrasonic cleaned in acetone for 10 minutes to remove the possibly contained hydrocarbons; and then ultrasonic cleaned the sheets with high purity water twice, each for 10 minutes.
After these efforts, FTO sheets were immersed in high purity water for follow-up experiment as the substrate of DSSC.
TiCl4 (TiCl4 99% A.R, Nanjing Chemical Reagent Co., Ltd.) was diluted with water to 2 M at 0 °C to make a stock solution, which was kept in a freezer and freshly diluted to 50 mM with high purity water at each TiCl4 treatment.
Online since: July 2014
Authors: Zhi Gang Yin, Jun Feng, Shu You Huang, Bing Fang Zhao
Experimental study of frost- resistance properties of silica fume concrete Zhi-Gang Yin1,a,Jun Feng2,b,Shu-you Huang3,c, Bing-fang Zhao4,d 1Changchun Institute of Technology, Jilin Province Water Project Security and Disaster Prevention Engineering Laboratory, Changchun Jilin Province, china 2Changchun Institute of Technology, Changchun Jilin Province, china 3Changchun Institute of Technology, Jilin Province Water Project Security and Disaster Prevention Engineering Laboratory, Changchun Jilin Province, china 4Changchun Institute of Technology, Changchun Jilin Province, china ayzhg1972@163.com,bjunefeng@yeah.net,chuangshuyou@126.com,dzhbf890616@126.com Keywords: silica fume; concrete; freezing-thawing; mass loss; relative dynamic elastic modulus Abastract:The frost resistance of low strength concrete is researched.
Experimental method and condition 2.1 Experimental method This experimentation is mainly basis on Test Code for Hydraulic Concrete (the professional standards of water resources of PRC SL352—2006), adopting quick freezing method.
In this experiment, we used I grade silica fume with density 2.20 g/cm3, 3.5% air-entraining agent. 2.5 Mix proportions of the concrete The water cement ratio of C20 and C25 concrete is 0.5.
Acknowledgements This work was financially supported by public welfare project of the ministry of water resource of PRC (201201040) Reference: [1] CHEN Changli,TU Qingmu.
Online since: March 2014
Authors: Na Yu
Introduction The mechanical and electrical system contains multiple professional knowledge and the overall design is difficult to distinguish between electromechanical engineering and civil engineering.
Fire protection and detection system Tunnel fire water system is the important guarantee of tunnel operation safety, especially the water supply and the system should be highly valued.
The surface water is the best choice because the maintenance of deep well is unfavorable and prone to mud blocking.
Tunnel line should not be set in the fire pipeline because the pipeline leakage can not be found timely, water leakage point is difficult to search and the maintenance is difficult.
Online since: June 2014
Authors: Si Ru Qian
Organize the professional workers to do the relevant research about the city disaster preparedness which provide the specific, reasonable reference. 3.2.3 Board rooms construct guidance according to the city's comprehensive disaster prevention planning When we plan the the disaster preparedness of the city, board rooms construct should be consider as parts of city shelter planning, the land areas for board rooms should be allocated in advance,when we plan the disaster shelter.
Especially the method of seismic damage prediction of building engineering. 3.3.1 According to the (put into practice) ,we need consider the standard as the following[4]: (1) Scale Nunber(household) Facility big scale community 2000 1( middle school) middle scale community 1000 1 (principle school), 1( clinic),1 ( store ) small scale community 50 1 (water supply facility),1( toilet), 1 refuse collecting station,1(kitchen). (1 fireproofing unit) (2).facilities standards: Facilities Configuration standards concentrate water supply 10 water outlets. public toilet 3 meter long urinate container, 6 squatting pans, 1 wash basin for man, 8 squatting pans and 1 wash pan for woman, 6 showers in bathroom, Principle school toilet 3 meter long urinate container, 5 squatting pans,1 swab sink,1 wash basin. 8 squatting pans, 1 wash basin.
Middle and primary school 2 80L water boilers small scale community 1 digestion tank (the predict period of clean was 2 or 3 months.) 3.3.2 Sum up experience, utilize situation, reduce the loss Board rooms construction is field trips, make plan first, then do the "three selections": (1)Location: First, the temporary houses location must choose the place which geology, natural condition are good and not burden for the area environment; second, in order to provide convenient living environment for the community residents.The place should priority consider near the residential areas.
Online since: March 2020
Authors: Mohamad Ashry Jusoh, Syarifah Norsuhaila Syed Mahmud, You Kok Yeow, Fahmiruddin Esa
The EFB powder was immersed in distilled water for 24 hours to segregate ash content from powder.
The Professional Network Analyzer was used to study the dielectric properties of PolyOP1 and PolyOP2 composites.
Water as blowing agent is chosen based on the nature of vaporization properties.
The presence of water blowing agent in the composite gave enhancement to dielectric constant and loss factor.
Kim, Mechanical , Morphological , and Thermal Properties of Rigid Polyurethane Foams Blown by Distilled Water, J.
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