H. A. Ahmed, M. Y. Ali, S. S. Hamood, A. N. Abd^*

Chalcogenide Letters, Vol.22, No.1, pp. 11-22, 2025, DOI:10.15251/CL.2025.221.11

Abstract As a potential substitute for antibiotics, cadmium sulfide and zinc oxide nano-particles (CdS and ZnO NPs) were created using laser ablation and a straightforward chemical process, respectively. Target of cadmium sulfide, deionized water, zinc nitrate, and sodium hydroxide were used as precursors. Different characterization techniques were used to characterize the CdS and ZnO NPs. X-ray diffraction was used to confirm that the CdS and ZnO had polycrystalline structures with average crystalline sizes of 54.16 nm and 29.23 nm, respectively. The ZnO particles were densely packed 2D curved nanopetals with a diameter of 51.65 nm, whereas… More >

Guoqiang Long^*, Wenling Chen, Yanghui Ou, Shuting Yang

The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.1, pp. 1-1, 2025, DOI:10.32604/icces.2025.010487

Abstract China's marine carbonate rocks are widely distributed, the reservoir is deeply buried, high temperature, high closure pressure, and the reservoir has strong non-homogeneity, porosity and permeability are generally low, while the natural cracks and dissolution pore (hole) is more developed. Currently, carbonate reservoir reforming technology is developing rapidly, and more and more marine carbonates can be developed. The Permian Maokou-Qixia Formation in the Sichuan Basin has good hydrocarbon source rocks of marine carbonates. The Longniusi Hechuan block of Permian Maokou-Qixia Formation develops a set of carbonate reservoirs interacting with leopard dolomite and mud crystal clastic… More >

M. S. Tivanov^b,, T. M. Razykov^a, K. M. Kuchkarov^a,b,, A. N. Olimov^a, R. R. Khurramov^a, D. Z. Isakov^a, Z. A. Makhmudov^a, M. Pirimmetov^a, A. Nasirov^c, D. S. Bayko^b, O. V. Korolik^b

Chalcogenide Letters, Vol.21, No.10, pp. 819-828, 2024, DOI:10.15251/CL.2024.2110.819

Abstract Using the thermal evaporation method, thin crystalline films of Sb₂(S_xSe_1-x)₃ are produced at the substrate temperature of 300℃. The mixed powders of the Sb₂S₃ and Sb₂Se₃ is used as a source material. The influence of the S/Se component ratio on the morphology and structural characteristics of Sb₂(S_xSe_1-x)₃ thin films is investigated. As demonstrated by the results of X-ray energy dispersive spectroscopy, the formed films of Sb₂(S_xSe_1-x)₃ have a components ratio close to the stoichiometry. Besides, Morphological and structural analyses reveal significant differences in the surface morphology of Sb₂(S_xSe_1-x)₃ thin film absorbers, indicating that the properties of the films More >

Can Kang^1,*, Shifeng Yan¹, Haixia Liu², Jie Chen², Kejin Ding³

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.11, pp. 2431-2442, 2024, DOI:10.32604/fdmp.2024.055688 - 28 October 2024

Abstract The presented study aims to reveal the effect of liquid temperature on cavitation-induced erosion of an Al-Mg alloy. An experimental work was conducted using a submerged cavitating waterjet to impact the specimen surface. For a certain cavitation number and a given standoff distance, different liquid temperatures were considered. Accordingly, a comprehensive comparison was implemented by inspecting the mass loss and surface morphology of the tested specimens. The results show that the cumulative mass loss increases continuously with the liquid temperature. A cavitation zone with an irregular profile becomes evident as the cavitation treatment proceeds. Increasing More > Graphic Abstract

Md. Shohan Parvez^1,2, Md. Mustafizur Rahman^1,3,*, Mahendran Samykano¹, Mohammad Yeakub Ali⁴

Energy Engineering, Vol.121, No.1, pp. 1-12, 2024, DOI:10.32604/ee.2023.027472 - 27 December 2023

Abstract With the exponential development in wearable electronics, a significant paradigm shift is observed from rigid electronics to flexible wearable devices. Polyaniline (PANI) is considered as a dominant material in this sector, as it is endowed with the optical properties of both metal and semiconductors. However, its widespread application got delineated because of its irregular rigid form, level of conductivity, and precise choice of solvents. Incorporating PANI in textile materials can generate promising functionality for wearable applications. This research work employed a straightforward in-situ chemical oxidative polymerization to synthesize PANI on Cotton fabric surfaces with varying dopant… More >

Che Engku Noramalina Che Engku Chik¹, Amyra Suryatie Kamaruzzan¹, Ahmad Ideris Abdul Rahim¹, Fathurrahman Lananan^2,3, Azizah Endut⁴, Siti Aslamyah⁵, Nor Azman Kasan^1,*

Journal of Renewable Materials, Vol.11, No.3, pp. 1181-1197, 2023, DOI:10.32604/jrm.2023.022755 - 31 October 2022

Abstract Chitin is the second most abundant polysaccharide, produced mainly as an industrial waste stream during crustacean processing. Chitin can be derived into chitosan through the deacetylation process. Conversion of shrimp waste into chitosan via the deacetylation process could be considered a practical approach for shell waste remediation. In this study, chitosan’s physicochemical characteristics extracted from two types of Pacific white leg shrimp, L. vannamei’s shell (i.e., rough and smooth), were compared with commercial chitosan. The yield, moisture, ash, solubility, water and fat binding capacity were measured. The degree of deacetylation (DDA) was calculated using FTIR, and… More > Graphic Abstract

Donghua Dai^1,2, Dongdong Gu^1,2,*, Qing Ge^1,2, Chenglong Ma^1,2, Xinyu Shi^1,2, Han Zhang^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.124, No.3, pp. 1085-1098, 2020, DOI:10.32604/cmes.2020.010927 - 21 August 2020

Abstract The three-dimensional physical model of the randomly packed powder material irradiated by the laser beam was established, taking into account the transformation of the material phase, the melt spreading and the interaction of the free surface of the molten pool and the recoiling pressure caused by the material evaporation during the selective laser melting. Influence of the processing parameters on the thermal behavior, the material evaporation, the surface morphology and the densification behavior in the connection region of the molten pool and the substrate was studied. It was shown that the powder material underwent the… More >

K. Slámečka¹, J.Pokluda¹, P. Ponížil ², P. Šandera¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.1, No.4, pp. 153-160, 2007, DOI:10.3970/icces.2007.001.153

Abstract In the paper a procedure for evaluation of the fracture surface morphology is described in detail. It consists of the stereophotogrammetrical 3D surface reconstruction followed by the Delaunay triangulation of obtained set of surface points. The potential of the procedure is demonstrated using fracture surfaces generated under combined bending-torsion fatigue loading of specimens made from high-strength low-alloy Cr-Al-Mo steel. Fracture profiles extracted from calculated 3D meshes are characterized by the root mean square roughness and the Hurst exponent. As a main result of the analysis the critical portion of the torsion loading component after which More >