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Firuz2,d 1 Material Science, School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2 School of Materials Engineering, Universiti Malaysia Perlis 3 Nuclear Science, School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia asyed.nuzul@unimap.edu.my, blinda@ukm.my, shahidan@ukm.my, dfiruz@unimap.edu.my Keywords: sol-gel synthesis, hybrid material, silica xerogels, mesoporous, composite Abstract.
Because of that, sol-gel method permits the combination of the inorganic with organic materials to form a new class of material, which is called hybrid material.
The scope of this paper is to investigate the porous properties of the synthesized hybrid materials.
Journal Sol-Gel Science Vol. 8 (1997), p. 499–505
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Introduction The concept of Functionally Graded Materials (FGMs) was proposed in 1984 by materials scientists as a means of preparing thermal barrier materials.
FGMs are the heterogeneous composite materials in which the material properties are gradually varied along certain directions in a predetermined manner.
Abrate: Composites Science and Technology Vol. 66 (2006), p. 2383
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It was found that the conductivity increased with the increase of temperature which meant that the rate of diffusion of the electrons through the materials also increased.
West: Journal of Electroceramics Vol. 1:2 (1997), pp. 125
Schmuttenmaer: Journal of Phys.
Kumar: Materials Letters Vol. 61 (2007), pp. 4090
Sreckovie: Science of Sintering Vol. 38 (2006), pp. 131

Consequently, development of sealing materials has become a major concern particularly for developers of Solid Oxide Electrolyser Cells (SOECs).
The results revealed the most suitable glass-ceramic compositions to meet the different criterions and the difficulties involved in formulating such materials.
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Vilasi, Relationship between chromia solubility and superalloy corrosion in silicate melts - A first attempt, in: Materials Science Forum, vol 595-598 PART 2, Les Embiez, 2008, pp. 621-627

To meet the demand of different manufacturing processes, the substrate materials can be made by choosing pitch, polyurethane and flexible aluminous plate etc.
Acknowledgements This work is supported by the National Natural Science Foundation of China (Grant No.60508001 and 60644003) and Beijing Nova Program of China (Grant No.2006B24) and Excellent Young Scholars Research Fund of Beijing Institute of Technology (Grant No.2006Y0101).
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An Experimental Study on Natural Convection Biomass Dryer with Different Sensible Heat Storage Materials D.V.N.Lakshmi1, a *, S.
The time taken by this process is less than the conventional drying without storage materials.
Where pebble and concrete have been used as thermal energy storage materials.
Chandrasekhar, performance of a forced convection solar drier integrated with gravel as heat storage material for chilli drying, Journal of Engineering Science and Technology, 4 (2009) 305 – 314
Applied Mechanics and Materials, 813-814 (2015) 668-673

Dissolution concentrations in typical normal workpiece materials of PCBN tool material at different temperature are then calculated.
Fig.1 Absolute at different temperatures Fig.2 Solubility in typical workpiece materials Solubility of Al2O3 ceramic tool material in workpiece material respectively.
The machining tests were performed on workpiece materials in Table 1-4.
Vleugels: Diamond and Related Materials.
Mathew: Journal of Materials Processing Technology.

Spherical steel slag filter material with high porosity, large specific surface area was made by using steel slag as the main raw material, adding binder and pore forming agent.
The test materials and methods Test materials Steel slag in the experiment was taken from some steel mills in Shandong.
Large concentrations difference of phosphorus between the surface of filter material and the solution is advantageous to the phosphorus migration to the surface of the filter material.
Acknowledgement This work was funded by the National Scientific Foundation China (NSFC51178207), Shandong Provincial National Science Foundation (ZR2011EEM003), the Natural Science Foundation of Shandong Province (ZR2012EEL21).
Evaluation of phosphorusremoval from wastewater by soils in rural areas in China[J].Journal of Environmental Sciences,2011,22(1):15-22.

For all the materials, the CR trend over time was also assessed, according to the Fick’s law.
Dotelli, Life cycle assessment of natural building materials: the role of carbonation, mixture components and transport in the environmental impacts of hempcrete blocks, Journal of Cleaner Production, Vol. 149, pp. 1051-1061, 2017
Yates, T., Characteristics of low-density hemp-lime building materials, Proceedings of Institution of Civil Engineers: Construction Materials, Vol. 165, issue 1, pp. 15-23, 2012
Ashraf, Carbonation of cement-based materials: Challenges and opportunities, Construction and Building Materials, Vol. 120, pp. 558-570, 2016
Olsen, et al., Global Carbon Budget 2020, Earth System Science Data, Vol. 12, issue 4, pp. 3269-3340, 2020.

Ordinary mechanical spring doesn’t have good linearity since it tends to be under the influence of the end ring effect, so the linear spring with rectangular cross-section is usually chosen which advantages are as follows: Firstly, it can use materials with larger cross-section than the round one to store more energy when its spiral outer diameter is under the space limitation.
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Journal of Tsinghua University (Natural Science Edition).2008.48(11) :13-17
Chinese Journal of Scientific Instrument. 2001, (4): 409-411
Journal of Mechanical Design, 2006, 128: 199-206