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Online since: August 2013
Authors: Jin Li, Chen Ma, Li Hong Liu, Mei Rong Guo
With objects networking sensors, 3G and other handheld traceable terminal equipment, collecting the initial critical data covered the agricultural industry chain from agricultural leading enterprises and professional agricultural cooperatives, to establish the standardized electronic files database of agricultural products. 2.
Agricultural products quality and safety risk control, can use the agricultural product quality safety accident rate and consumer trust in the quality of agricultural products to determine; the ability of agricultural information promotion can using agricultural IT results conversion rate, full facilities and equipment of the agricultural industry chain and the level of farmers' sense of information to measure; resources and environmental protection, including water and land resource conservation and protection.
The Integrated Mode of Vegetable Quality and Safety Supervision Automatic Control Technology and Facilities and Equipments The Process of Industrial Chain Chain of Supervision Regulation of Key Points Automatic Control Technology Facilities and Equipments Producing area conditions and species monitoring Producing area conditions Air 3S technology; Remote sensing monitoring techniques; Spectral analysis technology; Network technology Automatic monitoring system for the outdoor weather; Spectrometer; Automatic detection system of water pollution; Portable electric soil sampling system; Soil sample bar code management system; Portable X fluorescent, Light soil heavy metal gauge; Atmospheric pollution even; Continued automatic detection system Soil Surface water Species, breeding materials Breeding and screening Data analysis techniques; Information collection technology; Automation technology Automatically test the types of equipment; Germplasm Resources Information Management software
Production process management Inputs detection Seeds Rapid non-destructive testing technology; Multi-sensor information fusion detection technology; RFID Spectrum analyzer; Agricultural resources precise management system based on the IC card Pesticide Fertilizer Agricultural film Process Management Environmental Control Greenhouse environment monitoring technology; Information collection technology; Information management and decision-making Greenhouse environment and irrigation automatic control system; Farmland environmental information for wireless sensor network monitoring system; Rotary tiller variable fertilizer machine; Carrying portable electric drip sprayers(Facility); Mobile greenhouse fertilizing(Facility); Variable pesticide spraying machine Fertilizer Pesticide Irrigation water Process Raw materials acceptance Certificate of raw materials origin Barcode technology; RFID Technology; Anti-counterfeiting technology; Biosensor method; Near infrared spectroscopy Barcode scanner
Online since: June 2018
Authors: Dalibor Kocáb, Petr Daněk, Barbara Kucharczyková, Petr Misák, Romana Halamová
Introduction In recent years, professional and scientific institutions have become increasingly interested in concrete properties that are closely related to durability, environmental aspects or long-term sustainability [1,2].
The pastes were produced with the water-cement ratios of 0.33, 0.40 and 0.50, and the mortars with the water-cement ratios of 0.40 and 0.50.
Measurement Results The left side of Fig. 4 presents the development of the recorded time of the ultrasonic wave T using the Vikasonic instrument in the mortar with the water-cement ratio of 0.40.
Moravcová, Experimental determination of the influence of fresh concrete composition on its resistance to water and de-icing chemicals by means of two methods, Mater.
Online since: July 2014
Authors: Jie Dong, Lu Zhen Jiang, Ya Ran Guo
Especially on the particular planning for greening and the location and size of water requirement.
Characteristics: Sense of loss due to professional transformation, feeling ignored, neglected.
Certain area of green and water space will help to improve air microcirculation. (2) Acoustic environment.
In the material, characteristics of uniform surface, non-slip, non-reflective, good water permeability, flatness and flexible nature is necessary.
And for pedestrian, wood and water absorbing bricks is optimal, and tile and pebble must ensure a laying gap of width less than 15mm, height less than 2mm. 4) Service facilities.
Online since: October 2014
Authors: Xiao Chu Wang, Zhen Huang, Jun Wei Wang, Wei Li
The effect of modified with rubber pretreatment was more obvious, the common modifier substantially was water, sodium hydroxide solution, latex, and the silane coupling agent solution, CCl4 and so on.
Liu Juanhong, Song Shaomin [15] crumb rubber toughened the study of cement-based composites by orthogonal analysis found that under certain conditions the amount of cement and water-cement ratio, the rubber had a strong absorbent, and the slump reduced with the increasing of the rubber content, and the water retention have improved at the same time.
While in the mass fraction of the rubber was 10% of cement, 0.6% of water reducer Sulphamate, the flexural strength improved compared with the reference concrete in the mechanical properties of rubber concrete tests [18].
Since the rubber concrete researches started, in terms of basic mechanics, rubber particle size, rubber content, methods have many theoretical results, but in many practical applications have been limited, and many of the problems had to be solved. (1) The nature of the external mixed rubber, size, quality, lack of uniform technical standards. (2) The lack of technical specifications about the process guidance about Rubber concrete. (3) Modifying agent, the dose was still in the exploratory stage, and the reliability for a wide range of applications should to be tested. (4) The impact of the different effects of cementitious materials and additives for rubber concrete performance have not formed a unified theory, and the impact factor was discrete, so the further study was necessary. (5) Lack of professional organizations or associations to promote the exchange of rubber concrete finishing and theoretical results.
Online since: January 2013
Authors: Ahmad Abdul Latif, Jimoh K. Adewole, Suzylawati Binti Ismail, Leo Choe Peng, Abdullah S. Sultan
In its raw form, it consists primarily of methane (CH4) [4] with varying amounts of heavier gaseous hydrocarbons, acid gases, water vapour, mercury, radioactive gases and other gases such nitrogen and helium [5].
The actual processing of NG to high pipeline quality involves several processing steps which include removal of oil (for associated NG), natural gas liquids, water, and other gases such as helium, nitrogen, hydrogen sulfide, carbon dioxide among others [5, 7].
Nielsen, Gas Purification, Gulf Professional Publishing, 1997
Hughes, Introduction to Industrial Membrane Processes, Industrial Membrane Separation Technology, Blackie Academic and Professional, London, 1996, pp. 1-7
Online since: September 2011
Authors: Li Liu, Yi Chi Zhang, Xiao Lin Dong, Fa Sheng Li
For example, about 85% of constructions funds were financed by municipal bonds for Drinking water and sewage disposal in U.S [3].
A professional financial intermediary -Brownfields Capital created a financial instrument called “Brownfields Value Contract” (BVC) which can provide financing for remediation and redevelopment of brownfields [4] p.85.
Hoffman and her Brownfields Capital(BC), a professional finance/investment management firm, created an exclusive license to a patent called the BVC for finances remediation; development and redevelopment of brownfields fund [5] p.15.
Wu and J.Y Ma: China Finance. 2(2006), p.21(In Chinese) [3] Research Group of water environmental protection investment and financing policies and demonstration of Ministry of Finance: Review of Economic Research. 46(2010), p. 46(In Chinese) [4] G.R.
Online since: September 2024
Authors: Khalid Alzebdeh, Mahmoud Nassar
The product was then cleansed with distilled water to remove unreacted chemicals.
Each sample, weighing 2 grams, was submerged in distilled water at room temperature, and the change in water volume was measured.
Furthermore, we assessed water absorption following the ASTM D570 standard [31].
The proportion of water adsorbed by the bio-composite specimens was determined by evaluating the change in sample weight before and after placing in water.
In order to assess the significance of a particular matter, professionals are consulted in order to obtain their expert opinions and insights.
Online since: May 2012
Authors: De Hu Yu, Li Wei Zhang, Shu Juan Yang
Current Situation of Metallurgical Slag Development and Utilization in China [1, 2] According to the investigation within the industry, it is showed that the development and utilization of metallurgical slag in our country has entered into the comprehensive utilization stage during the period of “the Eleventh Five-Year Plan”, and most of iron and steel enterprises have been equipped with professional treatment plant for the treatment and disposal of metallurgical slag.
In the past, blast furnace slag is mainly processed by water quenching, and ground up together with cement clinker and a small quantity of gypsum, to produce slag Portland cement.
Therefore, slag cement can be widely used in the construction process of civil construction, water conservancy channels, road traffic and so on.
Since 1996, the micro powder of blast furnace water-granulated slag from Shougang has been successively applied in the construction of major projects, including the parking garage of Capital International Airport and No.1 Bridge, Beijing Tongchan Building, Shatan Houjie Multifunctional Building in Beijing, and a variety of technical indexes have reached the design requirements.
The specific surface area of blast furnace water-granulated slag can be 4000~8000cm2/g after levigation, and its mixing amount can reach up to 20%-45%.
Online since: November 2012
Authors: Pin Yan, Hong Bo Zheng, Jing Chen
Acoustic, mechanics and physical properties of seabed sediment samples is measured by professional equipments and parameters such as porosity, density, grain average size, P-wave velocity, attenuation and other data can be obtained.
But the traditional direct measurement methods is low efficient and high cost, it’s difficult to sampling when the water depth is more than a few hundred meters.
Seabed sediment is water saturated porous gain two-phase mixture.
Sound propagation property in seabed sediment is established the theory for wave propagation of water saturated porous gain two-phase mixture.
is identical to the pressure reflection coefficient of the sediment–water interface.
Online since: September 2013
Authors: Mohan Sinnathambi Chandra, Reem Ahmed
Literature reviews Petroleum refineries generate relatively large amounts of sludge waste from oil/water/solids separation, tank bottoms, waste water, and so on.
However, without volume reduction and appropriate treatment before disposal, refinery sludge will reduce the service-life of landfill sites and may result in an odor problem and create the risk of contamination, particularly on ground water, thus causing adverse health effects.
Table 1: The characteristic properties of refinery sludge Item Property Oily sludge heating value analysis The average caloric value of wet sludge 4000 kJ/kg The average caloric value of dry sludge 26733kJ/kg Proximate analysis Weight% (Wet basis of Refinery sludge) Proximate analysis Weight% (Dry basis of Refinery sludge) Moisture (water content) 77.4 % 9.95 % Volatile materials (combustible) 17.8% 62.91 % Ash content 4.8% 14.04 % Fixed carbon Below detection limits 13.1 % Ultimate analysis of oily sludge Dry basis Wet basis C 55.8% 13.5% H 7.3% 5.2% O 28.5% 93.7% N 5.7% 1.2% S 2.7% 0.8% The Equilibrium Model Advanced system for process engineering (ASPEN) PLUS simulator program gives a near complete integrated solution to chemical processes and reactors.
Gasaification 2nd Edn, Gulf Professional Publishing, Barlington, MA, 2008.
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