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Journal articles on the topic 'Composite activities'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Okeyo, George, Liming Chen, and Hui Wang. "An Agent-mediated Ontology-based Approach for Composite Activity Recognition in Smart Homes." JUCS - Journal of Universal Computer Science 19, no. (17) (2013): 2577–97. https://doi.org/10.3217/jucs-019-17-2577.

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Activity recognition enables ambient assisted living applications to provide activity-aware services to users in smart homes. Despite significant progress being made in activity recognition research, the focus has been on simple activity recognition leaving composite activity recognition an open problem. For instance, knowledge-driven activity recognition has recently attracted increasing attention but mainly focused on simple activities. This paper extends previous work by introducing a knowledge-driven approach to recognition of composite activities such as interleaved and concurrent activit

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Karunakaran, C., and A. Vijayabalan. "Photocatalytic Activities of CdO-Fe₂O₃, CdO-CuFe₂O₄ and CdO-ZnFe₂O₄ Nanocomposites." Materials Science Forum 764 (July 2013): 206–18. http://dx.doi.org/10.4028/www.scientific.net/msf.764.206.

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Magnetically separable CdO-Fe2O3, CdO-CuFe2O4 and CdO-ZnFe2O4 nanocomposites have been prepared by precipitation method. The X-ray diffractogram shows face centered cubic CdO, cubic CdO2, rhombohedral α-Fe2O3, orthorhombic β-Fe2O3, cubic γ-Fe2O3 and tetragonal FeOOH as the constituents of CdO-Fe2O3 composite. The components of CdO-CuFe2O4 composite are face centered cubic CdO, body centered tetragonal CuFe2O4 and cubic γ-Fe2O3. Face centered cubic CdO and ZnFe2O4, cubic γ-Fe2O3 and rhombohedral α-Fe2O3 are the constituents of CdO-ZnFe2O4 composite. The energy dispersive X-ray spectra confirm t

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Marković, Zoran M., Milica D. Budimir Filimonović, Dušan D. Milivojević, Janez Kovač, and Biljana M. Todorović Marković. "Antibacterial and Antibiofouling Activities of Carbon Polymerized Dots/Polyurethane and C60/Polyurethane Composite Films." Journal of Functional Biomaterials 15, no. 3 (2024): 73. http://dx.doi.org/10.3390/jfb15030073.

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The cost of treatment of antibiotic-resistant pathogens is on the level of tens of billions of dollars at the moment. It is of special interest to reduce or solve this problem using antimicrobial coatings, especially in hospitals or other healthcare facilities. The bacteria can transfer from medical staff or contaminated surfaces to patients. In this paper, we focused our attention on the antibacterial and antibiofouling activities of two types of photodynamic polyurethane composite films doped with carbon polymerized dots (CPDs) and fullerene C60. Detailed atomic force, electrostatic force an

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Kumar, Vineet, Md Najib Alam, Gaurav Manik, and Sang-Shin Park. "Recent Advancements in Rubber Composites for Physical Activity Monitoring Sensors: A Critical Review." Polymers 17, no. 8 (2025): 1085. https://doi.org/10.3390/polym17081085.

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This review provides the latest insight (2020 to 2025) for composite-based physical activity monitoring sensors. These composite materials are based on carbon-reinforced silicone rubber. These composites feature the use of composite materials, thereby allowing the creation of new generation non-invasive sensors for monitoring of sports activity. These physical sports activities include running, cycling, or swimming. The review describes a brief overview of carbon nanomaterials and silicone rubber-based composites. Then, the prospects of such sensors in terms of mechanical and electrical proper

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Supanakorn, Goragot, Siriporn Taokaew, and Muenduen Phisalaphong. "Multifunctional Cellulosic Natural Rubber and Silver Nanoparticle Films with Superior Chemical Resistance and Antibacterial Properties." Nanomaterials 13, no. 3 (2023): 521. http://dx.doi.org/10.3390/nano13030521.

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Composite films of natural rubber/cellulose fiber/silver nanoparticle were synthesized in a green route via the latex solution process. Hybrid cellulose filler containing carboxymethyl cellulose and cellulose microfibers was used to facilitate facile and fast preparation and to improve mechanical strength to the composites, respectively. All the composites possessed a high tensile strength of ~120 MPa, a high heat resistance of nearly 300 °C, and more than 20% biodegradability in soil in two weeks. Chemical resistance and antibacterial activity of the composite was enhanced depending on sizes

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Shah, Nasrullah, Tahir Zaman, Touseef Rehan, et al. "Preparation and Characterization of Agar Based Magnetic Nanocomposite for Potential Biomedical Applications." Current Pharmaceutical Design 25, no. 34 (2019): 3672–80. http://dx.doi.org/10.2174/1381612825666191011113109.

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Purpose: The purpose of the present study was to make a biocompatible agar based composite material via incorporation of appropriate additives within the agar matrix for potential applications in drug delivery and biomedical fields. Methodology: Agar based composites were prepared by the incorporation of magnetic iron oxide nano particles, graphite and sodium aluminum as additives in different proportions within the agar matrix by a simple thermophysico- mechanical method. The as prepared agar based composites were then characterized by different techniques i.e. FTIR, SEM, TGA, XRD and EDX ana

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Sulaeman, Uyi, Estri Yunari, Ponco Iswanto, Shu Yin, and Tsugio Sato. "Synthesis of Bi₂O₃/Ag₃Po₄ Composites and their Photocatalytic Activities under Visible Light Irradiation." Advanced Materials Research 1112 (July 2015): 163–67. http://dx.doi.org/10.4028/www.scientific.net/amr.1112.163.

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The Bi2O3/Ag3PO4 composites consisting of the monoclinic α-Bi2O3 and body-centered cubic Ag3PO4 were successfully synthesized by grinding Ag3PO4 and Bi2O3 mixtures in ethanol using an agate mortar, followed by calcination at 500°C for 5 hours, where the Ag3PO4 was synthesized by co-precipitation method using AgNO3 and NaH2PO4.2H2O as starting materials. The Bi2O3 content in the composite materials changed from 5 to 25 mol.%. The composites were characterized using XRD, DRS and BET specific surface area. The photocatalytic activities were evaluated using Rhodamin B degradation under visible lig

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Do Thi Phuong, Hoang, Thuy Nguyen Thi, Ha Nguyen Thi, et al. "Synthesis and photocatalitic activities of NiFe2O4/nitrogen-doped graphene oxide composite." Vietnam Journal of Catalysis and Adsorption 9, no. 2 (2020): 54–61. http://dx.doi.org/10.51316/jca.2020.029.

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In this work, the NiFe2O4/N-doped GO composites were successfully synthesized by the hydrothermal method. The structure, chemical compositions, the presence of functional groups, surface morphology, and magnetic properties of the obtained composites were investigated by X-ray Diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDX), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Vibrating Sample Magnetometer (VSM). The experimental results show that nickel ferrite (NiFe2O4) nanoparticles with the size of abou

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Irondi, Emmanuel Anyachukwu, Emmanuel Oladipo Ajani, Olawale Mashood Aliyu, Kazeem Koledoye Olatoye, Hassan Taiye Abdulameed, and Osayame Funmilayo Ogbebor. "Bioactive components, enzymes inhibitory and antioxidant activities of biofortified yellow maize (Zea mays L.) and cowpea (Vigna unguiculata L. Walp) composite biscuits." Annals of the University Dunarea de Jos of Galati. Fascicle VI - Food Technology 45, no. 1 (2021): 86–101. http://dx.doi.org/10.35219/foodtechnology.2021.1.06.

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This study evaluated the bioactive components, enzymes inhibitory and antioxidant activities of biofortified yellow maize (YM) and cowpea (CP) composite biscuits. Composites of YM and CP, mixed at the ratios of 100:0 (YM); 75:25 (YMCP-1); 50:50 (YMCP-2); 25:75 (YMCP-3) and 0:100 (CP), were used to bake composite biscuits designated YM-B, YMCP-1B, YMCP-2B, YMCP-3B and CP-B, respectively. Refined wheat flour (WT) served as the control biscuit (WT-B). The bioactive components (total carotenoids, total phenolics, tannins, total flavonoids and total saponins), enzymes (pancreatic lipase, α-amylase,

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Jenkhongkarn, Ratchanon, and Muenduen Phisalaphong. "Effect of Reduction Methods on the Properties of Composite Films of Bacterial Cellulose-Silver Nanoparticles." Polymers 15, no. 14 (2023): 2996. http://dx.doi.org/10.3390/polym15142996.

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Composite films of bacterial cellulose-silver nanoparticles (BC-Ag) were prepared by different methods of in situ reduction of silver ions, using sodium hydroxide, ascorbic acid, chitosan, and UV irradiation. The effects of the reduction methods on their properties were investigated. The chitosan-reduced composite exhibited dispersed silver nanoparticles (AgNPs) within the nanocellulose matrix with the smallest size, while the ascorbic-reduced composite displayed the largest size. The incorporation of AgNPs tended to reduce the crystallinity of the composites, except for the ascorbic-reduced c

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M, Praveendaniel, Rajesh Anantha Selvan P, and Paramanantha Swami Doss D. "Improved Optical, Photocatalytic, Electrical, And Antimicrobial Properties of Tio2 Doped with Phosphomolybdic Acid Composites." Indian Journal of Science and Technology 16, no. 38 (2023): 3267–82. https://doi.org/10.17485/IJST/v16i38.1441.

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Abstract <strong>Objectives:</strong> To synthesize a TiO2-phosphomolybdic acid composite by sonication method. The above prepared samples were characterized and study the application. <strong>Method:</strong> The above prepared composites were characterized by UV-Visible, FTIR, XRD, EDAX and SEM studies. Also, the applications studies such as, photocatalytic activities, antimicrobial activities and electrical conductivities.<strong> Findings:</strong> The UV-Visible and FTIR shows that there is a strong interaction between TiO2 and the dopant, phosphomolybdic acid. XR

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Kumarasinghe, K. G. U. R., W. C. H. Silva, M. D. A. Fernando, et al. "One-Pot Reducing Agent-Free Synthesis of Silver Nanoparticles/Nitrocellulose Composite Surface Coating with Antimicrobial and Antibiofilm Activities." BioMed Research International 2021 (March 27, 2021): 1–16. http://dx.doi.org/10.1155/2021/6666642.

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Nitrocellulose with silver nanoparticle (AgNP/NC) composite was prepared in situ using Ag(CH3CO2) and nitrocellulose without any reducing agent. The composite materials synthesized were spray coated onto glass substrates to obtain thin films. The AgNPs/NC composites were characterized by ultraviolet-visible, Fourier transform infrared, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The antimicrobial activity of AgNPs/NC composite was investigated by tube method and time-kill kinetic studies against three microbial species, including Pseudo

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13

Li, Hong, Mei Ling Hu, and Wen Jie Zhang. "TiO₂ and 5A Zeolite Composite Prepared for Photocatalytic Methyl Orange Degradation." Advanced Materials Research 152-153 (October 2010): 1129–32. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1129.

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The concentration of TiO2 and the composites of TiO2 and 5A zeolite were studied in order to improve the photocatalytic activity of TiO2. Methyl orange aqueous solution was taken as imitated polluted water. The results indicated that the optimum dosage of TiO2 was 200 mg/l. A simple mixture was prepared by adding TiO2 and 5A zeolite together into methyl orange solution. The optimum TiO2:5A ratio was 1:11. Composite of zeolite 5A and TiO2 was also prepared using solid-state dispersion method. Photocatalytic activities of the composite after each preparation step were evaluated. Although the res

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Han, Ke, Xue-Lei Peng, Fang Li, and Ming-Ming Yao. "SnO2 Composite Films for Enhanced Photocatalytic Activities." Catalysts 8, no. 10 (2018): 453. http://dx.doi.org/10.3390/catal8100453.

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As a new type of promising semiconductor photocatalyst, SnO2 cannot be widely applied due to its low utilization efficiency to visible light and swift recombination of photogenerated electrons and holes. These drawbacks were effectively overcome by preparing the B/Ag/F tridoped SnO2-ZnO composite films using the simple sol–gel method. The degradation of the methyl green and formaldehyde solutions was used to value the photocatalytic activity of the samples. Photoluminescence (PL) spectra and the UV–Vis absorption spectroscopy results of the samples illustrated that the B/Ag/F tridoped SnO2-ZnO

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Si, Yain-Whar, David Edmond, Marlon Dumas, and Arthur H. M. ter Hofstede. "Specification and execution of composite trading activities." Electronic Commerce Research 7, no. 3-4 (2007): 221–63. http://dx.doi.org/10.1007/s10660-007-9005-6.

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Qin, Xiujuan, Li Cui, and Guangjie Shao. "Preparation of ZnO-Zn2TiO4Sol Composite Films and Its Photocatalytic Activities." Journal of Nanomaterials 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/428419.

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Ti-doped ZnO sol-composite films were prepared on the glass substrate by the two-step sol-gel technique. X-ray diffraction, Uv-Vis spectrophotometer, and FS spectrum of composite films were used to help make structure characterization and optical performance testing. The results showed that the composite was a mixture of ZnO + Zn2TiO4. Because of synergistic effect of both semiconductor oxides, composite films had a wide range of spectral response in the visible region, and the absorption band edge was about 510 nm, and the Green Belt of composite films luminous significantly enhanced. Photoca

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Rifada, Pradiza Revvan, Asrofi Mochamad, Setyawan Haris, Hastu Muhammad Oktaviano Putra, and Arrozaq M. Saddam. "Green Polymer Composites for Aerospace Engineering Applications : A Review." Proceeding of International Conference on Artificial Intelligence, Navigation, Engineering, and Aviation Technology (ICANEAT) 1, no. 1 (2024): 129–33. http://dx.doi.org/10.61306/icaneat.v1i1.217.

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In the last decade, Study on the use of natural fibers as synthetic substitute materials or green polymer composites is growing. The growth of green polymer composites has had a significant impact on polymer composite research and innovation. This rapid growth provides advantages over low-cost synthetic fiber composites and reduces adverse impacts on the environment. Because of its potential, this material is applied in various engineering fields, including in the aerospace engineering. In recent years, various improvements have been made to natural fiber composite materials to improve p

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Zhang, Jin. "Preparation of Novel Pt–BiVO₄/Fly Ash Cenospheres Composites with High Photocatalytic Performance." Advanced Materials Research 1010-1012 (August 2014): 216–19. http://dx.doi.org/10.4028/www.scientific.net/amr.1010-1012.216.

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A novel fly ash cenospheres supported Pt–BiVO4 composites (Pt–BiVO4/FACs) photocatalysts were prepared by modified metalorganic decomposition process, followed by photochemical reduction. The composites were characterized by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), and UV–vis diffused reflectance spectroscopy (DRS) techniques. The results indicate that the visible light absorption of the Pt–BiVO4/FACs composite is greatly enhanced. The Pt element is present in the metallic form and disperses in the composite samples. Photocatalytic activities of the Pt–BiVO4/FACs composites

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Finer, Y., and J. P. Santerre. "Salivary Esterase Activity and Its Association with the Biodegradation of Dental Composites." Journal of Dental Research 83, no. 1 (2004): 22–26. http://dx.doi.org/10.1177/154405910408300105.

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Pseudocholinesterase (PCE) and cholesterol esterase (CE) can hydrolyze bisphenylglycidyl dimethacrylate (bisGMA) and triethylene glycol dimethacrylate (TEGDMA) monomers. This study will test the hypothesis that enzyme activities showing CE and PCE character are found in human saliva at levels sufficient to hydrolyze ester-containing composites important to restorative denstistry. The study also seeks to ask if the active sites of CE and PCE with respect to composite could be inhibited. Photo-polymerized model composite resin was incubated in PCE and CE solutions, in the presence and absence of

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Mrozińska, Zdzisława, Michał Ponczek, Anna Kaczmarek, Maciej Boguń, Edyta Sulak, and Marcin H. Kudzin. "Blood Coagulation Activities of Cotton–Alginate–Copper Composites." Marine Drugs 21, no. 12 (2023): 625. http://dx.doi.org/10.3390/md21120625.

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Alginate-based materials have gained significant attention in the medical industry due to their biochemical properties. In this article, we aimed to synthesize Cotton–Alginate–Copper Composite Materials (COT-Alg(−)Cu(2+)). The main purpose of this study was to assess the biochemical properties of new composites in the area of blood plasma coagulation processes, including activated partial thromboplastin time (aPTT), prothrombin time (PT), and thrombin time (TT). This study also involved in vitro antimicrobial activity evaluation of materials against representative colonies of Gram-positive and

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Zgura, Irina, Nicoleta Preda, Monica Enculescu, et al. "Cytotoxicity, Antioxidant, Antibacterial, and Photocatalytic Activities of ZnO–CdS Powders." Materials 13, no. 1 (2020): 182. http://dx.doi.org/10.3390/ma13010182.

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In this work, ZnO–CdS composite powders synthesized by a simple chemical precipitation method were thoroughly characterized. The morphological, structural, compositional, photocatalytical, and biological properties of the prepared composites were investigated in comparison with those of the pristine components and correlated with the CdS concentration. ZnO–CdS composites contain flower-like structures, their size being tuned by the CdS amount added during the chemical synthesis. The photocatalytic activity of the composites was analyzed under UV irradiation using powders impregnated with methy

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Kiani, Mahsa, Mojtaba Bagherzadeh, Reyhaneh Kaveh, et al. "Novel Pt-Ag3PO4/CdS/Chitosan Nanocomposite with Enhanced Photocatalytic and Biological Activities." Nanomaterials 10, no. 11 (2020): 2320. http://dx.doi.org/10.3390/nano10112320.

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Decorating photocatalysts with noble metal nanoparticles (e.g., Pt) often increases the catalysts’ photocatalytic activity and biomedical properties. Here, a simple and inexpensive method has been developed to prepare a Pt-Ag3PO4/CdS/chitosan composite, which was characterized and used for the visible light-induced photocatalytic and antibacterial studies. This synthesized composite showed superior photocatalytic activity for methylene blue degradation as a hazardous pollutant (the maximum dye degradation was observed in 90 min of treatment) and killing of Gram positive bacterial (Staphylococc

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SAMANNAN, BHARATH, JOTHI SELVAM, and JEYABALAN THAVASIKANI. "Synthesis, Characterization and Anti-Cancer Studies of Curcumin Diketimines-Heteropolyacid Composites." Asian Journal of Chemistry 32, no. 7 (2020): 1534–42. http://dx.doi.org/10.14233/ajchem.2020.22612.

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A novel composite of curcumin diketimine (CDK)-heteropolyacid (where HPA = vanadium doped Keggin anion and CDK = curcuminbenzoguanamine) had been synthesized. The hybrid composites were investigated by analytical methods such as elemental analysis, FTIR, 13C NMR, SEM, EDS, XRD, DSC-TGA, ESR spectral studies and biological activities. Encapsulated hybrid composite also studied (in vitro) against MCF-7 cancer cell lines. ESR results showed that the presence of (V4+) ion nitrogen ligation in the composite. 13C NMR of CDK ligand value of 183.37 and 55.06 ppm corresponds to (2=N) and (O-CH3) may be

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Gu, Kai Yuan, Zhan En Peng, Jin Hua Feng, and Feng Qiang Sun. "Preparation of Zno-Cr₂O₃ Composites by a Sol-Gel Method and their Photocatalytic Activities." Applied Mechanics and Materials 151 (January 2012): 365–67. http://dx.doi.org/10.4028/www.scientific.net/amm.151.365.

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The ZnO-Cr2O3 composites with different complex proportion were prepared by a sol-gel method. The mol ratio of Zn and Cr element could be tuned by controlling the concentration of the precursors. These composites showed photocatalytic activities in degradation of methyl orange under the irradiation of 300W mercury lamp. And the activities regularly varied with the mol ratio of Zn and Cr. When n（Zn）:n（Cr）=10:1, a composite with best photocatalytic activity could be obtained.

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Singh, Buta, Jinchen Han, Mohammed J. Meziani, et al. "Polymeric Nanocomposites of Boron Nitride Nanosheets for Enhanced Directional or Isotropic Thermal Transport Performance." Nanomaterials 14, no. 15 (2024): 1259. http://dx.doi.org/10.3390/nano14151259.

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Polymeric composites with boron nitride nanosheets (BNNs), which are thermally conductive yet electrically insulating, have been pursued for a variety of technological applications, especially those for thermal management in electronic devices and systems. Highlighted in this review are recent advances in the effort to improve in-plane thermal transport performance in polymer/BNNs composites and also the growing research activities aimed at composites of enhanced cross-plane or isotropic thermal conductivity, for which various filler alignment strategies during composite fabrication have been

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Chen, Kuo-Yu, Kuen-Cherng Lin, Yueh-Sheng Chen, and Chun-Hsu Yao. "A Novel Porous Gelatin Composite Containing Naringin for Bone Repair." Evidence-Based Complementary and Alternative Medicine 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/283941.

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As Gu-Sui-Bu (GSB) is a commonly used Chinese medical herb for therapeutic treatment of bone-related diseases, naringin is its main active component. This study elucidates how various concentrations of naringin solution affect the activities of bone cells, based on colorimetric, alkaline phosphatase activity, nodule formation, and tartrate-resistant acid phosphatase activity assays to determine the optimal concentration of naringin. GGT composite was obtained by combining genipin cross-linked gelatin andβ-tricalcium phosphate. GGTN composite was prepared by mixing GGT composite with the predet

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Phiwdang, Kankanit, Mongkol Phensaijai, and Wisanu Pecharapa. "Study of Antifungal Activities of CuO/ZnO Nanocomposites Synthesized by Co-precipitation Method." Advanced Materials Research 802 (September 2013): 89–93. http://dx.doi.org/10.4028/www.scientific.net/amr.802.89.

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In this work, series of CuO/ZnO functional nanocomposites were synthesized through co-precipitation method using CuCl2×H2O and ZnCl2as starting materials with various molar ratio of copper:zinc, followed by annealing process at 600 °C for 2 hours to obtain CuO/ZnO nanocomposites. The structures of the composites were analyzed using X-ray diffraction and field emission scanning electron microscopy. For XRD result, diffraction peaks of the composites reveal the well-crystalline characteristic indicating the mixture phase of CuO and ZnO. SEM results show different morphologies of CuO, ZnO and Cu-

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Venkatesan, Raja, Ramkumar Vanaraj, Krishnapandi Alagumalai, et al. "Thermoplastic Starch Composites Reinforced with Functionalized POSS: Fabrication, Characterization, and Evolution of Mechanical, Thermal and Biological Activities." Antibiotics 11, no. 10 (2022): 1425. http://dx.doi.org/10.3390/antibiotics11101425.

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Rapid advancements in materials that offer the appropriate mechanical strength, barrier, and antimicrobial activity for food packaging are still confronted with significant challenges. In this study, a modest, environmentally friendly method was used to synthesize functionalized octakis(3-chloropropyl)octasilsesquioxane [fn-POSS] nanofiller. Composite films compared to the neat thermoplastic starch (TS) film, show improved thermal and mechanical properties. Tensile strength results improved from 7.8 MPa to 28.1 MPa (TS + 5.0 wt.% fn-POSS) with fn-POSS loading (neat TS). The barrier characteris

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SAKAMOTO, Akira. "Composite materials in unique applications. Activities of RIMCOF." Journal of the Japan Society for Composite Materials 25, no. 5 (1999): 203–6. http://dx.doi.org/10.6089/jscm.25.203.

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Zhao, Li-Zhu, Ke Han, Fang Li, and Ming-Ming Yao. "Tridoped TiO2 Composite Films for Improved Photocatalytic Activities." Coatings 9, no. 2 (2019): 127. http://dx.doi.org/10.3390/coatings9020127.

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The Fe/B/F tridoped TiO2-ZnO composite films attached to glass substrates were prepared via a simple sol–gel method. We appraised all samples’ photocatalytic activities by the degradation of methyl green and formaldehyde solutions. The samples were characterized by photoluminescence (PL) spectra, UV-Vis diffraction reflectance absorption spectra (DRS), X-ray diffraction (XRD), differential thermal analysis-thermogravimetry (DTA-TG), field emission scanning electron microscopy (FE-SEM) equipped with energy-dispersive spectroscopy (EDS), and Brunner–Emmet–Teller (BET) measurements. According to

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Zhang, Aiping, and Jinzhi Zhang. "Visible-light activities of Gd2O3/BiVO4 composite photocatalysts." Journal of Materials Science 45, no. 15 (2010): 4040–45. http://dx.doi.org/10.1007/s10853-010-4486-4.

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Nguyen, Xuan Sang. "Enhanced photo-Fenton activity of Fe3O4 spheres/ montmorillonite under visible light." International Journal of Advanced Engineering Research and Science 10, no. 2 (2023): 130–36. http://dx.doi.org/10.22161/ijaers.102.10.

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In this work, a magnetically separable montmorillonite/Fe3O4 sphere composite (MMT/Fe) was synthesized by a simple polyol thermal method. The characteristics of the as-preparation composites were checked by XRD, SEM, PL technologies. In addition, the photocatalytic activities of the composite products were checked by degradation of Rhodamin B (RhB) under visible light. The results showed that MMT/Fe composite exhibited the high photocatalytic activity for RhB removal under visible light irradiation. The improved photocatalytic activity of MMT/Fe can be ascribed to the low combination rate of p

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Costa, Joana P., Sílvia A. Sousa, Jorge H. Leitão, Fernanda Marques, Marta M. Alves, and M. Fernanda N. N. Carvalho. "Insights into the Dual Anticancer and Antibacterial Activities of Composites Based on Silver Camphorimine Complexes." Journal of Functional Biomaterials 15, no. 9 (2024): 240. http://dx.doi.org/10.3390/jfb15090240.

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Hydroxyapatite (HAp) is a widely used biocompatible material in orthopedic composite preparations. However, HAp composites that exhibit both anticancer and antibacterial activities through bioactive coordination complexes are relatively rare. To explore orthopedic applications, we blended several silver camphorimine compounds with HAp to create [Ag(I)] composites. All compounds [Ag(NO3)(L)n] (n = 1,2) based on camphorimine (LA), camphor sulfonimine (LB) or imine bi-camphor (LC) ligands demonstrated significant cytotoxic activity (IC50 = 0.30–2.6 μgAg/mL) against osteosarcoma cancer cells (HOS)

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Yu, Weiwei, Sujun Yuan, Yaogang Li, Qinghong Zhang, and Hongzhi Wang. "Preparation of TiO2 Nanoparticle/Nanotube Composites via a Vapor Hydrolysis Method and Their Photocatalytic Activities." ISRN Nanotechnology 2011 (October 23, 2011): 1–7. http://dx.doi.org/10.5402/2011/582534.

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TiO2 nanoparticle/nanotube composites were prepared by a vapor hydrolysis method and were characterized by X-ray diffraction, transmission electron microscopy, and N2 isothermal adsorption-desorption. The well-crystallized TiO2 nanoparticles were uniformly deposited onto the surface of TiO2 nanotubes. The photocatalytic activity of the composites was evaluated by the degradation of acid red G and phenol solution under UV irradiation. The results showed that the photocatalytic activities of the modified composites were significantly enhanced compared to the pristine nanotubes. In particular, th

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Janicka, Jolanta, Romualda Koźmińska, and Mirosława Majewska. "NET-SHAPE KNITTED FABRICS AS CARRYING ELEMENTS IN TECHNICAL COMPOSITE PRODUCTS." AUTEX Research Journal 3, no. 3 (2003): 124–28. http://dx.doi.org/10.1515/aut-2003-030304.

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Abstract This paper presents an experimental investigation aimed at broadening the range of knitwear application on composite products of non-conventional destination carried out at the TRICOTEXTIL Institute of Knitting Technology and Techniques. The research problems of these investigations, as solved by us, included the application of knitted fabrics as abrasive composite products for finishing activities in the building industry, filter materials, and upholstery constructions. An analysis of the structure of net-shaped knitted fabrics as applied for technical composite materials is presente

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Wang, Jie, Xiao Yong Pan, Ling Peng, Yu Liu, and Nian Jie Wang. "Investigation of Antibacterial Property and Photocatalytic Activity of Recyclable Ag/ZnOw Composites." Applied Mechanics and Materials 472 (January 2014): 831–34. http://dx.doi.org/10.4028/www.scientific.net/amm.472.831.

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Silver-deposited zinc oxide whisker (Ag/ZnOw) composites with different Ag/Zn molar ratios (MRs) were successfully synthesized by a simple method. Subsequently, the structure and properties of these composites were characterized using various tests. It is found that the silver nanoparticles are located on the root of ZnOw, which is beneficial for the antibacterial and photocatalytic performance of ZnOw. The Ag/ZnOw composite exhibits better antibacterial and photocatalytic activities than that of the pure ZnOw, and the efficiency of both properties increase with increasing molar ratio of Ag/Zn

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Raorane, Chaitany Jayprakash, Thirukumaran Periyasamy, Rajesh Haldhar, Shakila Parveen Asrafali, Vinit Raj, and Seong-Cheol Kim. "Synthesis of Bio-Based Polybenzoxazine and Its Antibiofilm and Anticorrosive Activities." Materials 16, no. 6 (2023): 2249. http://dx.doi.org/10.3390/ma16062249.

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Candida albicans are highly widespread pathogenic fungi in humans. Moreover, its developed biofilm causes serious clinical problems, leading to drug failure caused by its inherent drug tolerance. Hence, the inhibition of biofilm formation and virulence characteristics provide other means of addressing infections. Polymer composites (PCs) derived from natural products have attracted increasing interest in the scientific community, including antimicrobial applications. PCs are a good alternative approach to solving this challenge because of their excellent penetration power inside biofilms. The

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Lin, Zhao, Li Yunyun, Cheng Bin, and Chen Yu. "Synthesis of antibacterial polyurethane film and its properties." Polish Journal of Chemical Technology 22, no. 2 (2020): 50–55. http://dx.doi.org/10.2478/pjct-2020-0016.

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AbstractPolyurethane (PU) is a polymer widely used in the biomedical field with excellent mechanical properties and good biocompatibility. However, it usually exhibits poor antibacterial properties for practical applications. Efforts are needed to improve the antibacterial activities of PU films for broader application prospect and added application values. In the present work, two PU films, TDI-P(E-co-T) and TDI-N-100-P(E-co-T), were prepared. Silver nanoparticles (AgNPs) were composited into the TDI-N-100-P(E-co-T) film for better mechanical properties and antibacterial activities, and resul

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Hartini, Hartini, Yuniawan Hidayat та Mudjijono Mudjijono. "STUDY PORE CHARACTERIZATION OF γ-ALUMINA – ACTIVATED CARBON COMPOSITE MADE OF CASSAVA PEELS (Manihot esculenta Cranz)". ALCHEMY Jurnal Penelitian Kimia 11, № 1 (2016): 47. http://dx.doi.org/10.20961/alchemy.11.1.106.47-57.

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<p>A composite of γ-alumina and activated carbon made of cassava peels was studied in terms of its pore structures and its properties. The objective of this study was to determine the interaction and structure, as well as the character and pore size of γ-alumina – activated carbon composite.</p><p>Carbon made of cassava peels was activated by H<sub>2</sub>SO<sub>4</sub> and its activities were tested according to the Indonesian Industrial Standards (SII). The addition of activated carbon into γ-alumina made in variations of 10, 20, 30, 40 and 50 % w/w,

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Hartini, Hartini, Yuniawan Hidayat та Mudjijono Mudjijono. "STUDY PORE CHARACTERIZATION OF γ-ALUMINA – ACTIVATED CARBON COMPOSITE MADE OF CASSAVA PEELS (Manihot esculenta Cranz)". ALCHEMY Jurnal Penelitian Kimia 11, № 1 (2015): 47. http://dx.doi.org/10.20961/alchemy.v11i1.106.

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<p>A composite of γ-alumina and activated carbon made of cassava peels was studied in terms of its pore structures and its properties. The objective of this study was to determine the interaction and structure, as well as the character and pore size of γ-alumina – activated carbon composite.</p><p>Carbon made of cassava peels was activated by H<sub>2</sub>SO<sub>4</sub> and its activities were tested according to the Indonesian Industrial Standards (SII). The addition of activated carbon into γ-alumina made in variations of 10, 20, 30, 40 and 50 % w/w,

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Gołębiowski, Łukasz, Marcin Siwek, Marcin Ciesielski, Andrzej Zagórski, Sławomir Krauze, and Radosław Majewski. "Modelling and Validation of the Composite Shell of a Train Seat." Problemy Kolejnictwa - Railway Reports 64, no. 189 (2020): 75–84. http://dx.doi.org/10.36137/1891e.

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The subject of the modelling work and the conducted experiments is the composite shell of a train seat. The activities carried out involved designing the geometry, planning the material structure, and selecting the materials to be used. The shell was built using polymer matrix fibrous composites (i.e. FRP – Fibre Reinforced Polymer – composites), which are lighter than steel and comply with the relevant standards for strength and safety at the same time. This was followed by creating a computational model for the shell and conducting a strength analysis in accordance with the guidelines of the

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Hai, Le Van, Lindong Zhai, Hyun Chan Kim, Pooja S. Panicker, Duc Hoa Pham, and Jaehwan Kim. "Chitosan Nanofiber and Cellulose Nanofiber Blended Composite Applicable for Active Food Packaging." Nanomaterials 10, no. 9 (2020): 1752. http://dx.doi.org/10.3390/nano10091752.

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This paper reports that, by simply blending two heterogeneous polysaccharide nanofibers, namely chitosan nanofiber (ChNF) and cellulose nanofiber (CNF), a ChNF–CNF composite was prepared, which exhibited improved mechanical properties and antioxidant activity. ChNF was isolated using the aqueous counter collision (ACC) method, while CNF was isolated using the combination of TEMPO oxidation and the ACC method, which resulted in smaller size of CNF than that of ChNF. The prepared composite was characterized in terms of morphologies, FT-IR, UV visible, thermal stability, mechanical properties, hy

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Alberotanza, D., F. Pinto, S. Polo, G. Zaccaria, and D. Capoccello. "Development of innovative technologies for manufacturing of certified narrow body aircraft composite flap." IOP Conference Series: Materials Science and Engineering 1226, no. 1 (2022): 012002. http://dx.doi.org/10.1088/1757-899x/1226/1/012002.

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Abstract Fiber-reinforced polymer composites perfectly meet the basic requirements of aircraft flaps being weight reduction critical for fuel saving and increased payload. New technologies have been designed and developed to increase competitiveness in the use of composite materials by ensuring a continuous manufacturing process, a streamlined and balanced flow of activities, synchronized as much as possible with customer and market demand, reducing material scraps and non-value-added activities. Resin excess, tool mark-offs, out of tolerance dimensions are potential defects generated during t

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Zhang, Wen Jie, and Yang Yu. "Preparation and Properties of Composite TiO₂-HZSM-5 Used for Photocatalytic Degradation of Methyl Orange." Applied Mechanics and Materials 26-28 (June 2010): 281–84. http://dx.doi.org/10.4028/www.scientific.net/amm.26-28.281.

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Photocatalytic activities of TiO2-HZSM-5 composite photocatalysts prepared by solid-state dispersion method were investigated. TiO2 particles were well distributed on the surface of HZSM-5. Methyl orange removal rates increased with decreasing TiO2:HZSM-5 ratio from 10:1 to 1:50 in TiO2-HZSM-5 composites. Adsorption of methyl orange increased constantly with increasing amount of HZSM-5. Photocatalytic degradation activity was also noticeably enhanced up to 56% when using TiO2-HZSM-5 composite, resulting in 13% more removal compared with using pure TiO2. Composite photocatalysts calcinated at t

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Wu, Zhi Gang, Yan Rong Jia, Jian Wang, Yang Guo, and Jian Feng Gao. "Core-shell SiO2/Ag composite spheres: synthesis, characterization and photocatalytic properties." Materials Science-Poland 34, no. 4 (2016): 806–10. http://dx.doi.org/10.1515/msp-2016-0121.

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AbstractCore-shell SiO2/Ag composite spheres with dense, complete and nanoscaled silver shell were prepared by using a novel facile chemical reduction method without surface modification of silica at room temperature. The core-shell composites were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy and energy dispersive X-ray spectroscopy (EDX). The photocatalytic properties towards the degradation of methyl orange (Mo) of the prepared SiO2/Ag composites were also tested. The studies showed that the surface of SiO2 microspheres was homogene

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Amanah, Siti Nazilatul, Wirda Udaibah, and Kholidah Kholidah. "Synthesis of Fe₃O₄-Zno-Bentonite Composite and Their Activities in Photodegradation of Methylene Blue." Walisongo Journal of Chemistry 7, no. 2 (2024): 245–53. https://doi.org/10.21580/wjc.v7i2.24018.

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The development of Fe₃O₄-ZnO-Bentonite photocatalyst material is crucial for the treatment of dye effluents, particularly in response to the rapid growth of the textile industry. Methylene blue, widely used as a textile dye, poses environmental challenges. The combination of bentonite, ZnO, and Fe₃O₄ was synthesized using the coprecipitation method to create a material capable of photodegrading methylene blue dye. Fe₃O₄-ZnO-Bentonite was synthesized using 2 g of bentonite, 8.19 g of Zn(NO₃)₂·6H₂O, and FeSO₄:FeCl₃ weight ratios (in grams) of 4.170:4.055 (composite 1), 4.170:8.109 (composite 2),

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47

Suryati, Suryati, Rizka Mulyawan, Meriatna Meriatna, Cut Khairunnisa, Leni Maulinda, and Fikri Hasfita. "Compositional Engineering of Chitosan–Potato Starch–Kaolin Biocomposites: Tuning Physicochemical Properties for Wound Dressing Applications." International Journal of Engineering, Science and Information Technology 5, no. 3 (2025): 441–47. https://doi.org/10.52088/ijesty.v5i3.1001.

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An investigation has been made to predict the effects of various Kaolin fillers with different concentrations from 4 to 10 percent on the properties of Chitosan and Potato Starch Bio-composite for wound dressing applications. The procedure was to prepare the chitosan and starch in equal proportions, apply the filler to the hydrogel, dry it, and characterize it. The characterizations of the synthesized bio-composite were its absorption percentage, mechanical test, presented functional groups, and antibacterial test. It was found out that the bio-composite with the highest swelling percentage 6%

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Chen, Shenggui, Junzhong Yang, Yong-Guang Jia, Bingheng Lu, and Li Ren. "A Study of 3D-Printable Reinforced Composite Resin: PMMA Modified with Silver Nanoparticles Loaded Cellulose Nanocrystal." Materials 11, no. 12 (2018): 2444. http://dx.doi.org/10.3390/ma11122444.

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With the rapid application of light-curing 3D printing technology, the demand for high-performance polymer resins is increasing. Existing light-curable resins often have drawbacks limiting their clinical applications. This study aims to develop a new type of polymethyl methacrylate (PMMA) composite resins with enhanced mechanical properties, high antibacterial activities and excellent biocompatibilities. A series of reinforced composite resins were prepared by mechanically mixing PMMA with modified cellulose nanocrystals (CNCs), which were coated with polydopamine and decorated by silver nanop

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Yang, Huaitao, Beibei Yang, Wei Chen, and Junjiao Yang. "Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts." Catalysts 12, no. 10 (2022): 1263. http://dx.doi.org/10.3390/catal12101263.

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While modern industry has contributed to the prosperity of an increasingly urbanized society, it has also led to serious pollution problems, with discharged wastewater and exhaust gases causing significant environmental harm. Titanium dioxide (TiO2), which is an excellent photocatalyst, has received extensive attention because it is inexpensive and able to photocatalytically degrade pollutants in an environmentally friendly manner. TiO2 has many advantages, including high chemical stability, low toxicity, low operating costs, and environmental friendliness. TiO2 is an N-order semiconductor mat

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Reifsnider, KL, GP Sendeckyj, SS Wang, et al. "Composite Standards Activities of the Society of Automotive Engineers." Journal of Composites Technology and Research 8, no. 1 (1986): 24. http://dx.doi.org/10.1520/ctr10317j.

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