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In spite of many advantages of PCMs, the efficient use of these materials as thermal storage systems is generally affected by the low thermal conductivity which severely limits the rate of absorbing and releasing heat from and to the heat sink or source.
Gosselin: International Journal of Thermal Sciences Vol. 49-11 (2010), no. 11, p. 2148-2156 [6] L.
Tan: International Journal of Thermal Sciences Vol. 51 (2012), p. 77-83 [9] D.
Yap, and a Mujumdar: International Journal of Thermal Sciences Vol. 47-8 (2008), p. 1055-1068 [12] C.
Viskanta: Journal Heat Transfer Vol. 108 (1986), p. 174-181

In recent years many works had been developed on biocide materials applied to polymer and ceramic materials [1-4].
Materials Science Forum, 591-593 (2008), 362-367
Angioletto: Materials Science and Engineering C Vol. 29 (2009), p. 1569
Rigas: Journal of Colloid and Interface Science Vol. 340 (2009), p. 131
Afsin: Journal of Hazardous Materials Vol. 151 (2008), p. 682

Pittman, "Arsenic Removal from Water/wastewater Using Adsorbents - A Critical Review," Journal of Hazardous Materials, pp. 1-53, 2007
Choe, "Dechlorination of Atrazine Using Zero-valent Iron Under Neutral pH Conditions," Journal of Hazardous Materials, pp. 502-506, 2008
Paiva, "Combined Zero-valent Iron and Fenton Processes for the Treatment of Brazilian TNT Industry Wastewater," Journal of Hazardous Materials, pp. 1224-1228, 2009
Xu, "Chromium(VI) Reduction in Aqueous Solutions by Fe3O4-stablized Fe0 nanoparticles," Journal of Hazardous Materials, pp. 1640-1645, 2009
Lee, "Adsorption Characteristics of As(V) on Iron-coated Zeolite," Journal of Hazardous Materials, vol. 163, pp. 808-808, 2009

Among these materials, polymers and their composites have gained significant attention due to their versatility, ease of processing, and tunable properties.
However, these additives are synthetic materials.
To turn waste into materials valuable, this work focuses on exploring the use of amethyst as a novel additive to enhance the properties of PVDF-HFP.
The integration of amethyst into polymer matrices presents an intriguing opportunity to enhance the functional properties of the composite materials.
Liu, Improvement of the piezoelectricity of PVDF-HFP by CoFe2O4 nanoparticles, Nano Materials Science. 6 (2024) 201–210. https://doi.org/https://doi.org/10.1016/j.nanoms.2023.03.002

In many external fixation materials, low-temperature thermoplastic material has obvious advantages, not only consistent with light quality, has a good waterproof and intensity, and can be reused or adjust many times in different shape.
Materials and methods Material.
Huang: Orthopedic Journal of China, Vol. 17（2009）No.20, p.1578
Stephen, et al: Polymer Materials Science & Engineering, Vol. 22 (2006) No.3, p.231
Yao, et al: Journal of Functional Materials, Vol. 17 (2013) No.44, p. 2451.

L2013198) and National Nature Science Foundation of China(No.51303055).
Chinese Journal of Sensors and Actuators,2006,19(5)：1739-1743.
Chinese Journal of Scientific Instrument, 2009,30(6)：102-105.
Chinese Journal Sicentific Instrument,2008,29(4)：745-749.
Chinese Journal of Sensors and Actuators,2006,19(5)：1788-1791.

Study on an air filter material immobilized with bio-antimicrobials Jingquan Yanga, Zheng Wangb, Jinhui Wu, Limei Hao, Tao Tian, Song Lin Institute of medical equipment, Academy of military medical science, Tianjin, China.
Materials and methods Materials and apparatus Materials: Control sample: fiberglass high efficiency air filter media(HEPA), supplied by China Chongqing Yangtze Special Paper Factory; Test sample: antibacterial air filter media, self-made; Adhesive: Acrylate; Bio-antimicrobial: ε-Polylysine and Natamycin; all commercially obtained; Strains: we choose Staphylococcus aureus (ATCC 6538), Escherichia coli (8099) and Aspergillus niger (ATCC 6275) represent Gram-positive bacteria, Gram-negative bacteria and Fungi respectively; all supplied by Institute of Microbiology and Epidemiology, Academy of Military Medical Science, China.
Dai, et al : Chinese journal of disinfection, Vol. 22(2005),p.156.
Wu: Chinese journal of disinfection, Vol.25(2008),p.351-354.
Standard test method for evaluating the bacterial filtration efficiency(BFE) of medical face mask materials, using a biological aerosol of Staphylococcus aureus

Malec „Ultrafine grained strip of CuCr0,6 alloy prepared by CRCS metod” ” Journal of Achievements in Materials and Manufacturing Engineering vol 33 issue 2 April 2009 s166-172 [9] J.
Malec „Microstructure evolution in CRCS processed strips of CuCr0,6 alloy” Journal of Achievements in Materials and Manufacturing Engineering vol 38 issue 2 February 2010 s195-202 [11] Y.
Krishnaiah, Uday Chakkingal, Hyoung Seop Kim Severe plastic deformation and strain localization in groove pressing Computational Materials Science 43 (2008) 641–645 [14] A.
Rafizadeh On the evolution of flow stress during constrained groove pressing of pure copper sheet Computational Materials Science 45 (2009) 855–859 [22] E.
Venugopal Applicability of the groove pressing technique for grainrefinement in commercial purity copper Materials Science and Engineering A 410–411 (2005) 337–340 [25] M.

Higher temperatures always encourages crystal growth rates as more energy is available to the materials for phase formation and crystal growth.
Lin: Journal of Sol-Gel Science and Technology Vol. 6, p. 277-281 [4] L.
Zhang: Materials Research Bulletin Vol. 35, p. 1653-1659 [8] W.
Li: Materials Letters Vol. 61, p. 3218-3220 [9] K.
Rao: Materials Research Bulletin Vol. 40, p. 831-839

High performance concrete has developed from 1980s, it is a new achievement in the modern cement material and engineering science.
Materials 1.
In this test, the total mass of cementitious materials is fixed.
In each hydration age, we can see the porosity of harden paste compounded with several cementitious materials is lower than few cementitious materials, and the dense level of multi-cementitious material system is better.
Study on the Effects of Mineral Admixtures on Densenness of Fresh Cement Paste[J].Journal of Building Materials，2002,5（1）：21-25 [4]Lange F,Mortel H,Rudert V.