Search results

With the heating of the concrete specimens, there is an expected discoloration to red-brown hues according to Lee et. al [18] where this reddish color is expected to appear in temperatures ranging between 300°C to 600°C, primarily because of the dehydration of the cement paste [19].
Such result aligns with Sancak et al. [20] reporting that NWC experiences higher residual strength losses than LWC.
Al Rashed, H.
Al Nassara, A.
El-Hacha, M.

Zhu et al. investigated the mechanical properties of expanded clay soils that had undergone 0, 2, 5, and 8 F-T cycles and were reinforced with varying percentages of PET strips (i.e., 0, 1, 1.5, and 2% of the soil's dry weight) [11].
Hassan et al. strengthened the expanding soil by adding four different amounts of plastic fiber (1%, 2%, 3%, and 4% by weight of soil) [12].
According to Amena et al. [13], plastic powder has certain properties, such as a specific gravity of 0.93 g/cm³, minimum water absorption of 0.015%, an ultimate tensile strength of 54 MPa, and an elastic modulus that ranges from 110 to 450 MPa.
In the study done in 2022, Farrah et al. looked at several percentages of crushed plastic garbage by soil weight, such as 0%, 0.5%, 0.75%, and 1.0% [16].
El Aal, Enhancement of the Geotechnical Properties of Soils Using Marble and Lime Powders, Guelma City, Algeria, Geotech.

Methodology The structure of this survey questionnaire was based on a survey of fatigue factors in regional airline operations by Co et al. [5].
These defined ratings were similar to survey of fatigue carried out by Co et al. [5].
The study by Rosekind et al. [6] has shown that naps up to 40 minutes are both safe and effective for long-haul pilots.
Sasaki et al. [7] and many research papers has indicated that individuals’ subjective perception of their sleep often differ from physiological parameters.
[5] E.L.

Previously, Andersson et al.
Koponen et al. studied using ultrasound samples of Norway spruce from stems that were grown either at a medium- or a highfertility site in Finland [14].
The dependence of the stiffness modulus on the mean MFA corresponds well to the modelling results of Astley et al. [22].
Such ideas have been recently applied to polymeric materials, but not yet to wood (Salmi et al. 2007, unpublished).
El-Hosseiny, K.

It can be mentioned that Ni doping CdS thin film by spray pyrolysis is available in several literatures, (A.Rmili et.al, 2013)[8] they found that the band gap decrease with increase Ni ratio, (Manju Mishra Patidar et al, 2015)[17], a change in structure from CdS nanorod into nano particles investigated by SEM and XRD-diffractin results after the doping process, while (R. 
Murugesan et.al.2017)[18] They observed that the average crystallite size was increased after the doping.
[5] Najiba Abdullah, Al-Hamdani Ameer, Abdul Hussain Salih, “Preparation of Nanocrystalline Copper Doped CdS Thin Films by Spray Pyrolysis Method”, Diyala journal for pure sciences , Vol. 8, No. 3(2012) 289-300
El Kouari , B.

The next activity was to develop chitosan/zeolite nanocomposite using our locally synthesized linde type A (LTA) aluminosilicate zeolite with a (Si/Al~1.2) [36].
However, the XRD results compared favorably in terms of diffraction angles and the Miller indices with other studies conducted by Rahman et al. on chitin from calcified coralline algae [34] and skeleton [25].
The FTIR spectrum compared very well with the FTIR analysis of α chitin elucidated by Ehrlich et al. [38, 39].
The chitosan peaks exhibited similar 13C relaxation times compared to similar studies conducted by Duarte el al [43].

S, et al.
Progress in Polymer Science, 2011, 36(1): 127-167 [5] Hu Zhongyuan,Tang Qiongqin.Preparation of hollow polymer microspheres and the use in the coatings[J].China Coatings,2008,23(9):37-40 [6] Li Penghui,Hu Xiaoxi,Yi Changfeng,et al.Progress in applications of hollow polymer microspheress[J].New chemical materials,2010,38(3):38-45 [7] Dai Chunli,Jiang Wei,Hou Xin.Recent research progress of hollow polymer microspheress material[J].Polymer materials science and engineering.2012,28(1):161-167 [8] Liang Zhiwu,Hao Guangjie,Shen Xiaoyi,et al.the Preparation of polymer microparticles with hollow structure[J].Polymer Bulletin,2003,10(5):36-41 [9] Cheng Jianli,Sun Jing,Lin Haoqing,et al.Hollow polymer microspheres made by osmotic swelling method[J].2005(68):1-7 [10] Vanderhoff J W., Park M, Synthesis of hollow polymer particle latex by using seeded emulsion polymerization technique [J].
Polymeric Materials Science and Engineering, 1991, 64: 345-346 [11] Vanderhoff J W, El-Aasser M S.

Tittelein et al [9] developed wood-cement particle board with the same density as gypsum board to avoid its drawback of poor screw-withdrawal resistance, low hardness and sensitivity to moisture.
Guna et al [10] developed gypsum ceiling tiles reinforced with wool and coir fiber to enhance its properties such as thermal insulation, flame resistance, durability and strength.
In order to lower the energy consumption of buildings, Braiek et al [11] developed a new composite material to enhance the thermophysical characteristics and lightness of gypsum plaster manufactured with date palm fibers.
[12] Beyene, M.T., El Kadi, M., Demissie, T.A., Van Hemelrijck, D. and Tysmans, T., 2021.
[20] Cabral, M.R., Nakanishi, E.Y., Santos, S.F., Christoforo, A.L. and Fiorelli, J., 2021.

Table 1: The chemical composition of the aluminium 7075 Source (wt%) Al Cr Cu Fe Mg Mn Si Ti Zn Experiment 88.5 0.20 2.02 0.24 2.38 0.12 0.14 0.09 6.04 ASM [21] 87.1-91.4 0.18-0.28 1.2-2.0 <0.5 2.1-2.9 <0.3 <0.4 <0.2 5.1-6.1 Normal solidification experiment was performed to evaluate the 7075 microstructure formation which was solidified at a lower cooling rate compare with a higher cooling rate in copper mould.
[4] Chinesta F, Cueto El, Atkinson H, Current Status of Semi-Solid Processing of Metallic Materials, Advances in Material Forming, Springer, Paris, 2007, pp 81-98
[17] Mohammadi H, Ketabchi M, Kalaki A, Microstructural evolution and mechanical properties of back-extruded Al 7075 alloy in the semi-solid state, International Journal of Material Forming (2012) 5, 109-119
[23] Gonzalez G, Lara-Rodriguez G, Sandoval-Jiménez A, Saikaly W, Charai A, The influence of cooling rate on the microstructure of an Al–Ni hypereutectic alloy, Mater Characterization (2008) 59, 1607-1612
[26] Gowri S and Samuel F, Effect of cooling rate on the solidification behavior of Al-7 Pct Si-SiCp metal-matrix composites, Metallurgical and Materials Transactions A (1992) 23, 3369-3376.

Frangioni et al studied the use of QDs in a spontaneous melanoma model in pigs [22].
Therasse, et al.: J.
[20] A.L.
Ivan, El-Sayed: Curr.
Simberg, et al: PNAS Vol. 104 (2007), p. 932.