Search results

Igbafe2,b 1,2Air Pollution Climatology and Energy Research, Department of Chemical Engineering, University of Benin, Benin City, Nigeria bigbafe_a_i@yahoo.com Keywords: Mixed layer depth, Solar and flare stack radiations, Atmospheric boundary layer Abstract: Mixing of chemical species released from pollution sources occurs at certain heights in the atmospheric boundary layer of the troposphere.
Within this height, mixing of materials occurs due to convective heat transport and mechanical (wind) actions.
Inversion below, Lapse aloft condition (looping) Atmospheric stability is a key factor of plume behaviour and dispersion characteristics.

Rheology of blast furnace slags with defined concentrations of titanium oxides Piotr Migas1, Marta Korolczuk-Hejnak1 1Department of Ferrous Metallurgy, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al.
Mickiewicza 30, 30-059 Krakow, Poland pmigas@ agh.edu.pl, mkorolcz@agh.edu.pl Key words: Rheology, Slag Viscosity, Blast Furnace, Hearth Lining Abstract: The applying of burden materials containing titanium compounds in the blast furnace process and the processes of forming titanium carbides and nitrides has a directly impact on the physical and chemical properties of slag and pig iron.
Due to the prevailing conditions inside, the hearth of the blast furnace is made up of graphite, carbon, carbon-graphite, and microporous materials.
Charge materials with titanium compounds have started being used in order to extend the life of the refractory lining and the service life of the blast furnace.
Fruehan Thermodynamics Of Tiox In Blast Furnace–Type Slags Metallurgical And Materials Transactions B Volume 30b, February 1999, Pp. 29-43, [6] D.

Modelling the contact between the rolling elements and the raceways of bulky slewing bearings Marek Krynke1,a, Ludwik Kania2,b, Eugeniusz Mazanek3,c 1Czestochowa University of Technology, Institute of Production Engineering al.
Super-element S2 with non-linear asymmetric material characteristic for balls Super-element S3 is the consecutive modification of super-element S2.
FEM software defined optional non-linear materials for the truss element.
The method of modelling the rolling elements, which are replaced by special elements (super-elements), is the key stage in the presented computational methodology.
Prebil, Numerical determination of carrying capacity of large rolling bearings, Journal of Materials Processing Technology, 155–156 (2004) 1696–1703

Lindroos: In Smart Structures and Materials.
Advanced Engineering Materials Vol. 3(11) (2001), p.837
Materials Science and Engineering A Vol. 370 (2004), p.41
Lagoudas, editor, Proceedings of SPIE Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics Vol. 5387 (2004), p.177
In Smart Structures and Materials.

Liu School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China, ylt-0205@163.com; yuansm@buaa.edu.cn; qliusmea@buaa.edu.cn Keywords: Green machining, Minimal Quality Lubrication (MQL), High strength steel, Cutting parameters, Flank wear, Roughness Abstract.
Moreover, adhesion of the work material on the tool plays an important role in determining the machined surface quality at higher cutting speeds.
In the cutting zone, the work piece material showed less viscous caused by the high temperature and generally sticks on the hills of feed marks.
Moreover, the chip-tool contact is mostly plastic at higher cutting velocity and feed rate especially for cutting hard to cut materials, so the cutting fluid applied conventionally cannot reduce the chip-tool interface temperature effectively because the fluid can hardly penetrate into the interface [12].
Acknowledgements This research work has been funded by National Key Technologies R&D Program of China (project No.2006BAF02A06-03) and joint construction project of Beijing Municipal Commission of Education.

The preparation and application of the cationic biopolymer based on xylan-rich hemicelluloses from agricultural biomass Junli Ren1,a,*, Xinwen Peng1,b, Feng Peng2,c, Runcang Sun1,2,d 1State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, China 2Institute of Biomass Chemistry and Technology, Beijing Forest University, China a,* renjunli@scut.edu.cn (corresponding author), bwenwenpeng1229@163.com, cfengpeng@bjfu.edu.cn, dynsun@scut.edu.cn Keywords: xylan-rich hemicelluloses; cationic biopolymers; papermaking; dry strength agent Abstract.
Recently, the conversion of hemicelluloses from agricultural and forest biomass to biodegradable and functional polymers and materials has been attracted increasing interests, such as quaternized hemicelluloses [2,3], carboxymethyl hemicelluloses [4,5], lauroylated hemicelluloses [6] and maleated hemicelluloses [7].
Therefore, appropriate chemical modifications provide the significant opportunity to endow hemicelluloses with the various valuable properties of hemicelluloses such as stronger, more elastic and more hydrophobic or thermoplastic properties, and the resulting products can be used as functional polymers [8] and selective membrane materials [9].
Experimental Materials.

Detection of Endotoxin Concentration Using Piezoelectric Based Biosensor System Xingliang Xiong Shiming Wang Yan Zhang Longcong Chen Laboratory of Biomedical Engineering Chongqing Medical University Chongqing, China e-mail: xxlsober@sina.com Keywords: Endotoxin; Quartz crystal; Biosensors Abstract.
Research indicates that early detection of endotoxin concentration is the major key for patient survival from sepsis [3, 4].
It also responds to changes of mechanical properties of the contacting material.
Materials and equipments Endotoxin from E.
Yuan for his valuable materials and Mr.

Substation type local materials construction method is used to build more perfect camp system.
Highway is a few hundred square meters of flat lawn space, has dozens of meters high sea buckthorn trees around, hut can use local materials, construction camps built with boards are there beside the bicycle.
Second, the terrain is flat and level, and the advantage of local materials, wood can be directly used in the construction of cabin access around the trees, water can be directly used in the camp beside the flowing stream.
The construction of supporting engineering.
The improvement of the facilities is attraction and nature coordinated development key, core.

Three-Stage Theory of Harmonious Ocean ——An Investigation on Harmonious Marine Environment and Sea Power Relations Yiming Cai Adjunct Professor of School of Management, Zhejiang Ocean University, China； Senior Economist of Zhoushan Port Authority，Zhejiang, China cym877@yahoo.com.cn Key Words: marine environment; harmonious; sea power theory; marine rights and interests; gaining; protection; development; the three-stage theory.
Examples include freight rates for China’s iron and steel raw materials and Japan’s grain in 2007.
In 2007, the price of shipping raw materials from Brazil and Australia for China’s iron and steel enterprises more than doubled in a single year compared with 2006.
The choices of ship routines, ship configuration, countries of raw materials and port network layout for import and export cargo are all directly related to the allocation of world resources, trade product cost and national economic security.
The development of marine engineering technology allows human to be more and more involved in the marine space [5].

Influences of Rare-earth Ions Doping on the Structure and Photocatalytic Activity of TiO2 Feng Li 1, 2, a, He Bian 3, b, Jingtang Zheng *1, c and Yan Hu 1, d 1 China University of Petroleum (East China), State Key Laboratory of Heavy Oil, Qingdao 266555, China; 2 Wudi people's county Government of Shandong Province, Wudi, 251900, China 3 Institute of Binzhou environmental protection of Shandong province, Binzhou, 256606, China alifengbgs@126.com, bbianhe_2009@sina.com, cjtzheng03@163.com dhuyan2007@126.com Keywords: Titanium dioxide; Sol-gel preparation; Photocatalytic activity; Degradation; Grey relational analysis method; Rare-earth ions Abstract.
As a kind of cheap and environment friendly photocatalyst, the TiO2 particles (especially its nanoparticles) have been considered as potential materials in some fields, such as sewage treatment, air purification and solar cells [1-3].
In order to improve the catalytic efficiency, stability and the light absorption range of the nano-TiO2 materials, researchers have recently used many methods (such as doping, grafting light absorption unit, impregnating, and so on) to prepare the new nano-TiO2 materials [4-8].
Grey system theory has been used widely in economic, management and engineering techniques, since it was established by prof.