The Lancet Diabetes & Endocrinology最新文献

{"title":"Development of hydrophilic carbon fiber textiles using seed-assisted hydrothermal deposition of ZnO nanostructures for enhanced interfacial interaction in CFRP composites","authors":"Ravi Shankar Rai","doi":"10.1016/j.ceramint.2024.10.139","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.139","url":null,"abstract":"Two-step hydrothermal deposition of zinc-oxide (ZnO) nanorods was used to functionalize carbon fiber textiles in order to produce increased hydrophilicity on fiber surface. On carbon fiber textiles, tightly packed ZnO nanorods developed after five seed cycles and five hours of growth treatment in a 30mM precursor salt based on the hydrothermal synthesis. Extensive characterizations have been performed on field emission scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Energy-dispersive X-ray spectroscopy, High resolution transmission electron microscopy, Photoluminescence spectroscopy, and Raman spectroscopy to assess the different aspects such as structural, morphological, elemental, and wettability of the plain and ZnO-modified carbon fiber textiles. ZnO nanomaterial having hexagonal nanorods shape and wurtzite crystalline structure were uniformly deposited on the fabrics. Owing to the wettability study, ZnO prisms improved the hydrophilicity of virgin carbon fiber textiles to enable strong bonds with polymer matrix. The findings highlight the significant improvement in the static water contact angle as a result of the samples' ZnO coating's ability to reduce surface free energy. The improved hydrophilicity in carbon fiber may enhance the bonding between carbon fibers and matrix materials in composite materials. Hydrophilic carbon fibers are more easily wetted by the matrix materials, allowing for better penetration of the matrix into the fiber structure.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"88 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of Mn-Zn Ferrite Doping in Phosphate-Based Glass Ceramics for Enhanced Hyperthermia Efficiency and Bioactivity","authors":"Pratthana Intawin, Arnon Kraipok, Naris Barnthip, Puripat Kantha, Ruamporn Potong, Surapong Panyata, Sukum Eitssayeam, Kamonpan Pengpat","doi":"10.1016/j.ceramint.2024.10.146","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.146","url":null,"abstract":"This study investigates the effects of Mn-Zn ferrite (MZF) content and heat treatment temperature on the structural, mechanical, magnetic, and bioactive properties of Na₂O-CaO-P₂O₅ glass ceramics. Various MZF contents (5MZF, 10MZF, 20MZF, and 40MZF) were incorporated into the glass ceramics and subjected to heat treatment at different temperatures (600, 650, 700, and 800°C). The results demonstrated that increasing the MZF content significantly enhanced the mechanical properties, including Vickers hardness, Knoop hardness, and Young's modulus. For example, the Vickers hardness values increased from 5.6 GPa in 5MZF samples to 7.1 GPa in 40MZF samples. X-ray diffraction analysis revealed the presence of major crystalline phases, such as Ca₂P₂O₇ and Na₄Ca(PO₃)₆, with NaFe₃P₃O₁₂ and (Zn,Mn)Fe₂O₄ appearing in samples with higher MZF content. Magnetic measurements indicated that the 40MZF samples treated at 700°C reached a satisfactory hyperthermia temperature of 43°C within 16 min. Bioactivity tests showed a decrease in bioactivity with increasing MZF content, whereas cytotoxicity assays confirmed that all MZF-Na₂O-CaO-P₂O₅ bioactive glass ceramics were non-toxic, maintaining over 100% cell viability after 24 h. These findings suggest that MZF-containing glass ceramics have potential applications in the biomedical field, particularly when enhanced mechanical and magnetic properties are required.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"63 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of composite ultrafiltration membrane from fly ash microspheres and alumina nanofibers for efficient dye removal from aqueous solutions","authors":"N.P. Fadeeva, I.R. Volkova, I.A. Kharchenko, E.V. Elsuf’ev, E.V. Fomenko, G.V. Akimochkina, K.A. Afanasova, I.V. Nemtsev, L.S. Tarasova, A.A. Yushkin, A.P. Nebesskaya, V.G. Prozorovich, A.I. Ivanets, I.I. Ryzhkov","doi":"10.1016/j.ceramint.2024.10.141","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.141","url":null,"abstract":"In this work, a novel type of ultrafiltration ceramic membranes with the support based on fine fly ash microspheres and selective layer based on the alumina nanofibers with an aluminosilicate binder is proposed. The average pore sizes of the support and selective layer are 0.46 μm and 29 nm, respectively. The membrane is characterized by the compressive strength of 96 MPa and water permeability of 207 l m^–2 h^–1 bar^–1. It is shown that the binder provides structural stability of selective layer and adhesion to the support. With increasing the binder content, the water permeability increases, reaches maximum, and then slightly decreases. The developed membranes are used for ultrafiltration of Blue Dextran dyes aqueous solutions with molecular weights of 70 kDa and 500 kDa and concentrations of 50 and 100 mg/L. The dyes rejection varies in the range 97–99 %, while the permeate flux is 100–140 l m^–2 h^–1 at the transmembrane pressure of 4 bars. The dye retention occurs via adsorption at the initial stage, which leads to the narrowing of pore size. Further, the dye filtration occurs mainly due to size effects. The proposed membranes can be employed for dye removal from wastewater, and also allow chemical modification by carbon coating to be employed in electrochemically assisted ultrafiltration. The developed methodology promotes the recycling of thermal energy waste and introduces novel approaches to combine waste and synthesized raw materials in the production of low-cost ceramic membranes.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"67 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystal structure, microwave dielectric properties, and far-infrared spectroscopy of a novel low-dielectric constant tremolite ceramic CaZnGe2O6","authors":"Shimeng Zhang, Zeyu He, Zhiguo Wang, Zhenggang Rao, Yunlong Hu, Chunchun Li, Longlong Shu","doi":"10.1016/j.ceramint.2024.10.131","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.131","url":null,"abstract":"The diopside-structured CaZnGe₂O₆ ceramics were synthesized using the conventional solid-state reaction method in this study, and their crystal structure, microstructural evolution, and microwave dielectric properties were systematically investigated. The XRD and Rietveld refinement analyses confirmed that CaZnGe₂O₆ crystallizes in the monoclinic crystal system with a <em>C2/c</em> space group. The intrinsic microwave dielectric properties of the ceramics were evaluated using far-infrared spectroscopy. The ceramic structure exhibits high density and microstructural homogeneity after sintering at 1130 °C, resulting in exceptional microwave dielectric properties achieved at this optimal temperature (<em>ε</em>_<em>r</em> =8.78 <em>Q×f</em> = 63,782 GHz, <em>τ</em>_<em>f</em> = -66.4 ppm/°C). These findings highlight the potential application of CaZnGe₂O₆ ceramics as low-permittivity materials suitable for microwave devices.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"17 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ablative property and mechanism of pitch-based carbon fiber modified C/C composites with high thermal conductivity","authors":"Xiaxiang Zhang, Xiao Luo, Xin Yang, Lei Zheng, Zhongguo Liu, Qizhong Huang","doi":"10.1016/j.ceramint.2024.10.147","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.147","url":null,"abstract":"The novel C/C composites with thermal transport function were prepared using the mesophase-pitch carbon fibers (CF_MP) as the thermal diffusion channels. The introduction of CF_MP greatly improved the microstructure, thermal properties, and ablative resistance of the C/C composites. During the graphitization process, compared with PAN fibers (CF_PAN), CF_MP was more likely to be graphitized to form a highly ordered three-dimensional graphite structure. The highly organized microcrystalline structure of CF_MP resulted in a tight interface with PyC that lessened the likelihood of flaws and cracks during graphitization. CF_MP, which acted as a thermal conduction skeleton, significantly improved the thermal conductivity of C/C composites. After 3000°C HTT, the thermal conductivity of C/C-3000-Z composites was increased to 51.70 and 225.02 W/ (m K) in the XY and Z planes, respectively. During the ablation process, C/C-3000-Z specimen exhibited a lower temperature gradient and less thermal stress owing to the outstanding thermal properties and fewer defects. After 30 s ablation, the temperature difference of surface and backside was only 495.9°C, and the mass and linear ablation rates were 0.3 μm/s and 0.9 mg/s, respectively.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"42 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing the microstructure, mechanical, and optical properties of recycled zirconia for dental applications","authors":"Hui Yang, Kenta Yamanaka, Hao Yu, Juan Ramón Vanegas Sáenz, Guang Hong","doi":"10.1016/j.ceramint.2024.10.137","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.137","url":null,"abstract":"Efficient recycling of dental zirconia residues from computer-aided design/manufacturing processes is crucial for sustainable development in dentistry. This study employed ball milling to modify recycled zirconia powder (RZP). Initial RZP and ball-milled RZP (RZP-BM) were pre-sintered at 1000-1150 °C and then final sintered at 1500 °C. Initial RZP had irregular shapes, while RZP-BM showed finer and more uniform morphology, higher packing density, and improved de-agglomeration after 6 h of ball milling. For pre-sintered zirconia, RZP-BM samples achieved properties comparable with commercial zirconia at 1100 °C, whereas initial RZP required 1150 °C. For final sintered zirconia, initial RZP samples exhibited lower Vickers microhardness, density, strength, and transmittance, with numerous defects in its microstructure. RZP-BM samples showed significant improvement in mechanical and optical properties, comparable with commercial zirconia. This study establishes a viable approach for recycling dental zirconia residues, enhancing its properties for potential reuse as dental materials.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"13 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Nd-doped silica glass with high doping concentration, low hydroxyl content, and 900 nm fluorescence emission fabricated by laser additive manufacturing","authors":"Yunxin Cao, Yuewei Yang, Chuqi Huang, Haolin Chi, Xuhang Li, Yang Gan, Zhiyun Hou, Guiyao Zhou","doi":"10.1016/j.ceramint.2024.10.046","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.046","url":null,"abstract":"The 900 nm wavelength laser is effective for atmospheric detection and various other applications.The frequency-doubled 450 nm deep blue laser can be used in maritime military, quantum optics, biomedicine, laser storage, laser display, and deep ultraviolet laser fields, among others. Although Nd³⁺ is considered the optimal medium for generating 900 nm lasers, competition with the 1060 nm emission wavelength must be addressed. In Nd-doped silica glass, without the introduction of aluminum, the emission intensity of the three-level transition is higher than that of the four-level transition. However, it can cause a concentration quenching between Nd³⁺, but co-doping with Al can effectively suppress it. As the Al/Nd ratio increases, the emission intensity at 1060 nm increases relative to that at 900 nm. By precisely adjusting the Al/Nd ratio, it is possible to suppress the 1060 nm emission while also inhibiting concentration quenching caused by Nd³⁺.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"67 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced hydrophobic properties, wear and corrosion resistance of plasma electrolyte oxidation coatings on AZ31B magnesium alloys with addition of TiO2 nanoparticles","authors":"Kunlong Zhang, Weihua Zhang, Yue Yang, Xiangyu Sun, Boxuan Men, Sirong Yu","doi":"10.1016/j.ceramint.2024.10.145","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.145","url":null,"abstract":"Nanocomposite coatings were fabricated on AZ31B magnesium alloy by means of plasma electrolyte oxidation (PEO) with the addition of TiO₂ nanoparticles into the alkaline electrolyte, followed by low surface energy modification in the ethanol solution of lauric acid. The dual-layered nanocomposite PEO coatings composed of MgO, Mg₂SiO₄, anatase-TiO₂, rutile-TiO₂, and Mg₂TiO₄ were formed, and the TiO₂ nanoparticles incorporated into the PEO coatings via both inertia and reactive modes. Besides, the penetration and adsorption of TiO₂ nanoparticles created a distribution gradient in the coating thickness direction. The wear rate of the PEO coatings with TiO₂ nanoparticles in 4 g/L was approximately 82% lower than that of the bare substrate and approximately 39% lower than that of the PEO coatings without TiO₂ addition, respectively. The enhancement in wear resistance was due to the synergistic effect of the lower coefficient of friction (COF), the higher microhardness and the denser microstructure with finer micropores and less microcracks on the coatings than that of the TiO₂-free coatings. Besides, the hydrophobic property was enhanced for the low surface energy modified PEO coatings with the addition of TiO₂ nanoparticles in the electrolyte. Moreover, a significant enhancement in the corrosion resistance was achieved for the PEO coating with the addition of TiO₂ nanoparticles in 4 g/L. It exhibited a higher corrosion inhibition efficiency and a lower corrosion rate than that in other concentrations and without TiO₂ addition. The improvement in anti-corrosion property was originated from the formation of phases including TiO₂ and Mg₂TiO₄ in the coating, and denser microstructure with better hydrophobic properties for the PEO coatings with TiO₂ nanoparticles in 4 g/L compared with that in other concentrations. Accordingly, the hydrophobic, wear-resistant and corrosion-resistant PEO coatings with TiO₂ nanoparticles exhibited significant advantages in the field of Mg alloys protection.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"24 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of A-Site doped PrBaCo2O5+δ perovskites as cathode materials for IT-SOFCs","authors":"Yan Liu, Fei Han, Haitao Xia, Zhijian Zhang, Qinan Zhou, Bi Xu, Haochen Shi","doi":"10.1016/j.ceramint.2024.10.142","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.142","url":null,"abstract":"Creating highly efficient and durable cathodes persists as a formidable task in the realm of Intermediate temperature solid oxide fuel cells (IT-SOFCs). Hence, we present a double perovskite oxide, Pr_0.6Sr_0.4BaCo₂O_5+δ (PS_0.4BC), and its electrocatalytic activity is thoroughly investigated. The XRD test is carried out and a notable transformation in the phase structure is observed upon the introduction of Sr²⁺ ions into the PBC matrix. That is, the phase structure of the material changes from double perovskite structure to single perovskite structure. Through the TG and TEC test that the introduction of Sr²⁺ ions into the lattice can create additional sites for oxygen vacancy formation and reduce TEC values. Further verify that Sr doping can enhance the concentration of oxygen vacancies of the material. The PS_0.4BC cathode material exhibits remarkably low polarization resistance, achieving an impressive value of 0.027 Ω cm² at an operating temperature of 800 °C. Oxygen partial pressure test shows that as the oxygen partial pressure decreases, there is a notable increase in impedance, particularly evident in the low frequency region of the Nyquist plots. This indicates that the oxygen content has obvious effects on the low-frequency processes. When the oxygen partial pressure exceeds 0.05 atm, the oxygen adsorption-dissociation and diffusion process is the rate-limiting step in the ORR. However, when the oxygen partial pressure is less than 0.05 atm, the formation of lattice oxygen through the combination of oxygen ions and oxygen vacancies processes is the rate-limiting step. Compared PBC cathode material, the more pronounced changes in the high frequency arc of the PS_0.4BC cathode at the same oxygen content. It shows that Sr doping significantly changes the high frequency process. After doping, the oxygen vacancy concentration increases, which facilitates the occurrence of the charge transfer process at high frequency.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"57 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of novel dual wave-absorbing ZnFe2O4/CNTs nanoparticles with more hotspots for enhanced microwave-induced catalytic activity：Performance and mechanism","authors":"Lei Jiang, Dan Wu, Fushuai Yu, Ruolin Ni, Jun Wang, Yongcai Zhang, Zhaohong Zhang, Shuang Xue","doi":"10.1016/j.ceramint.2024.10.134","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.134","url":null,"abstract":"In this study, novel dual wave-absorbing ZnFe₂O₄/CNTs nanoparticles were successfully fabricated using a microwave hydrothermal method and applied for enhanced microwave-induced catalytic degradation of bisphenol A (BPA) in aqueous solution. The effects of various process parameters, including Fe³⁺ concentration (mass ratio of ZnFe₂O₄ to CNTs), MW irradiation time, MW power, initial BPA concentration, and catalyst dose on the degradation process were thoroughly assessed. The results indicate that ZnFe₂O₄/CNTs nanoparticles effectively utilize MW energy to generate more hot spots and exhibit superior MW catalytic activity at a 1.0:10.0 mass ratio (ZnFe₂O₄:CNTs), due to the synergistic effect between ZnFe₂O₄ nanoparticles and CNTs under MW irradiation. Additionally, hydroxyl radicals (·OH) play a major role in the degradation process, while superoxide radicals (·O₂⁻) and holes (h⁺) play relatively minor roles. Potential intermediates and degradation pathways in the ZnFe₂O₄/CNTs/MW system have also been identified. Thus, the integrated ZnFe₂O₄/CNTs/MW technology shows great promise for treating environmental endocrine disruptors (EEDs) in water and wastewater.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"55 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}