The Lancet Diabetes & Endocrinology最新文献

{"title":"Dysprosium Ion Concentration Variations and their Comprehensive Influence on the Physical, Structural and Optical Properties of Multi-Component Borate Glasses for Luminescence Tailoring","authors":"Amit Kumar, , Ravina Lohan, Usha Rani, Isha Malik, Nisha Deopa, A.S. Rao, Anand Kumar","doi":"10.1016/j.ceramint.2024.10.123","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.123","url":null,"abstract":"A set of Zinc Strontium Lithium Fluoroborate (ZSLFB) glasses with different concentrations of Dysprosium ions (Dy³⁺) was created using the melt quench technique. The presence of non-crystallinity and various functional groups have been confirmed via X-Ray Diffraction (XRD) and Infrared Fourier Transform FT-IR measurements, respectively. The band gap values obtained from Tauc's plot were utilized to analyze the optical characteristics. The photoluminescence (PL) emission spectra display three well-defined intensity peaks at wavelengths of 481, 574, and 664 nm. The intensity of peaks exhibits an ascending trend until a concentration of 0.5 mol% of Dy³⁺ ions is reached, after which it decreases. The PL intensity maintains up to 82% at 200^o C to room temperature, showing excellent thermal stability. The Judd Ofelt (J-O) parameter values pursue the Ω₂ > Ω₆ > Ω₄ pattern, which shows its asymptotic nature. The CIE coordinates were assessed and determined to fall inside the white region. The interaction in the non-radiative energy transfer process was elucidated by utilizing the Dexter theory and Inokuti-Hiryama (I-H) model.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"17 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431585","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":"Regulating novel tunable green to red upconversion luminescence in Er3+/Yb3+ co-doped SrBi2Nb2O9 ferroelectric ceramic","authors":"Abdul Basith, Shobhangna Singh, Ankita Banwal, Megha Narwan, Manoj Verma, Renuka Bokolia","doi":"10.1016/j.ceramint.2024.10.086","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.086","url":null,"abstract":"A series of SrBi_2-x-yNb₂Er_xYb_yO₉ (SBN) ferroelectric ceramics co-doped with Erbium and Ytterbium have been fabricated through solid-state approach, the formation of pure phase SrBi₂Nb₂O₉ has been confirmed by XRD spectra corresponding to orthorhombic geometry having phase group A21am. The lattice parameters and volume of the unit cell increase with the content of Yb³⁺. SEM study revealed the randomly oriented plate-like structure of SBN having average particle sizes ranging from 0.9μm to 2.23μm. The FTIR characteristic bands are found at wavenumber 602cm^-1 and 812cm^-1. In Photoluminescence (PL) spectra, two green emission bands (524nm and 549nm) and one weak red band (660nm) are acquired using a 488nm excitation wavelength. The diffuse reflectance spectra (DRS) of ceramic compounds reveal that the values of band gap ranges from values 2.7 to 3.1eV. Two UCL bands are seen at wavelength 533 nm, and at wavelength 554 nm in the green part of the upconversion photoluminescence (UCL) spectra, and a single band observed at a wavelength of 672 nm in the red region upon excited by 980nm laser. The green band dominates for initial concentration up to x = 0.03, y = 0.03 after which red emission dominates with increasing concentration of Yb³⁺. The dependence study of pump power on UCL emission intensity reveals that there are two photons are involved in UC emissions of green and red. The time decay analysis of SBN composition showed that the average decay time of Er³⁺ is 70μs and that of the co-doped system (Er³⁺/Yb³⁺) is 37μs.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"49 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431587","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":"Hierarchically oriented carbon nanotubes/fly ash Janus membrane with open, straight pores for enhanced solar desalination performance","authors":"Jia Wang, Yingsheng Li, Yao Wang, Tong Liu, Mingyue Ding","doi":"10.1016/j.ceramint.2024.10.127","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.127","url":null,"abstract":"Seawater desalination via the solar photothermal membrane distillation technology is an effective way to solve the fresh water shortage, and it is very important to prepare a Janus membrane with excellent solar desalination properties to improve the water permeability. In this work, three typical hydrophobic carbon nanotubes/hydrophilic fly ash (CNTs/FA) Janus asymmetric membranes with different membrane support structures are prepared for solar desalination by the conventional tape casting or phase inversion tape casting techniques. It is demonstrated that nitrogen permeability is significantly enhanced from (4.81±0.17)×10⁵ L m^-2 h^-1 bar^-1 for the tortuous CNTs/FA Janus membrane to (9.28±0.10)×10⁶ L m^-2 h^-1 bar^-1 for the hierarchically oriented CNTs/FA Janus membrane with open, straight pores by manipulating the microstructure of the fly ash membrane support. Moreover, the corresponding evaporation rate is strongly increased from 0.633±0.010 to 1.669±0.010 kg m^-2 h^-1, which is greatly ascribed to the accelerated water permeation in the hierarchically oriented FA membrane support with open, straight pores. Additionally Our findings proves that the solar desalination performance can be greatly improved by the microstructure manipulation of the membrane support, and guide the development of novel membranes for efficient solar desalination.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"43 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431592","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":"Preparation, pore structure and properties of uniformly porous glass-ceramics sintered from granite powder using SiC@SiO2 foaming agent","authors":"Jian Zhou, Jinshan Lu, Changyou Liu, Liang Chen","doi":"10.1016/j.ceramint.2024.10.089","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.089","url":null,"abstract":"Granite sludge produced during the processing of granite blocks should be efficiently recycled for environmental protection and as a sustainable resource. In this work, porous glass-ceramics were prepared by stepwise sintering of granite powder using core-shell SiC@SiO₂ foaming agent. The SiC and SiC@SiO₂ foaming agents were compared in terms of the sintering and foaming behaviors of the powder compacts by thermal expansion, thermogravimetry and mass spectroscopy. The foaming agent and foaming temperature were investigated to study their effects on the pore structure and properties of the porous glass-ceramics. The SiO₂ shells of the SiC@SiO₂ particles inhibited the oxidation of the SiC cores and the release of CO₂ at the early stage of the sintering process, thus preventing pore coalescence and increasing the densification and specific strength of the sintered glass-ceramics. As the foaming temperature increased, the porous glass-ceramics exhibited a linear relationship between pore size and foaming temperature, and the specific strength first increased and then decreased due to pore coalescence and reduced crystallinity. Furthermore, the linear relationship between thermal conductivity and porosity indicates a closed pore structure, as demonstrated by computed tomography. At a foaming temperature of 1220 °C, the porous glass-ceramic has a porosity of 50.1%, a specific strength of 16.6 kN⋅m/kg and a thermal conductivity of 0.747 W/(m⋅K). Numerical simulation confirms that lightweight glazed glass-ceramics have potential applications in energy-efficient building tiles.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"30 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431630","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":"One-step pyrolysis derived Fe and heteroatom co-doped biochar composites for efficient microwave absorption","authors":"Shuangshuang Yang, Xingwei Wang, Chen Zhao, Chuanpeng Li, Qiangliang Yu, Bo Yu, Meirong Cai, Feng Zhou","doi":"10.1016/j.ceramint.2024.10.097","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.097","url":null,"abstract":"Electromagnetic (EM) pollution frequently disrupts the regular operation of sophisticated electrical devices, necessitating the urgent development of lightweight EM wave absorbers that possess powerful absorption capability. Herein, we report a simple method for the preparation of Fe and heteroatom co-doped biochar composites (FeX-BC, where X = N, S) by directly carbonizing the precursors of anhydrous FeCl₃, cherry kernel powder, and heteroatom dopants (melamine or Na₂S₂O₃·5H₂O). By adding different amounts of dopants during the synthesis of the precursors, it is possible to adjust the heteroatom content of the FeX-BC samples with precision. It is worth mentioning that the FeN_0.1-BC composite delivers the best EM wave absorption performance with an effective absorption bandwidth of 4.8 GHz and a minimal reflection loss of -63.2 dB. Furthermore, the significant attenuation of EM wave can be attributed to the synergistic interplay of magnetic loss, dielectric loss and the enhanced impedance matching. This study introduces a simple methodology for the fabrication of EM wave absorbers, a significant contribution to the synthesis, advancement, and functional applications of biomass-derived materials.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"31 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431590","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 surface-activated La0.6Ca0.4MnO3 perovskite-type electrodes using oxygen plasma for highly stable supercapacitor application","authors":"Silambarasan Kuppusamy, Dinesh Selvakumaran, Premanand Rajaraman, Kumaresan Lakshmanan, Mohd Khairul Bin Ahmad","doi":"10.1016/j.ceramint.2024.10.120","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.120","url":null,"abstract":"This study introduces a novel and efficient approach for synthesizing perovskite-type nanoparticles and advanced plasma surface activation to significantly improve the supercapacitor's performance. High-purity La_0.6Ca_0.4MnO₃ (LCMO) perovskite nanoparticles with a crystalline structure were synthesized using a facile coprecipitation technique, followed by an innovative low-pressure DC glow-discharge plasma treatment in an oxygen atmosphere. This plasma surface activation process enhances the surface properties of the nanoparticles and boosts their electrochemical performance, representing a transformative modification method for energy storage materials. Detailed analysis of the synthesized and surface-activated LCMO (SA@LCMO) nanoparticles revealed a well-defined cubic morphology with a remarkable surface area of 95 m²/g, as confirmed by TEM and BET analysis. The plasma-treated SA@LCMO electrodes demonstrated superior supercapacitor performance, delivering an impressive specific capacitance of 453 F/g at a current density of 1 A/g more than doubling the 225.8 F/g achieved by untreated LCMO electrodes. Additionally, the SA@LCMO electrodes exhibited exceptional cycle stability, retaining 87% of their capacitance and achieving a coulombic efficiency of 95.2% after 10,000 GCD cycles. The material also showed promising energy storage capabilities, with a maximum energy density of 3.92 Wh/kg at a power density of 170.6 W/kg. These results highlight the transformative impact of plasma surface activation on perovskite nanomaterials, positioning the SA@LCMO as a highly promising candidate for next-generation energy storage technologies with superior energy density, durability, and performance. This study introduces new avenues for surface engineering perovskite-based materials to create scalable high-performance energy storage devices.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"16 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431627","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":"Cermet coatings obtained by electric spark alloying to increase service life of dental instruments","authors":"R. Gvetadze, S. Arutyunov, S. Kryuchkov, M. Antipov, P. Bazhin, M. Mustafaev, A. Deshev, V. Tsarev, M. Andreev, I. Katkov, S. Agasieva, V. Avdeeva","doi":"10.1016/j.ceramint.2024.10.112","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.112","url":null,"abstract":"The article presents the results of our study of protective cermet coatings obtained by the method of electric spark alloying on a dental instrument (excavator) using SHS (self-propagating high-temperature synthesis) electrodes based on TiC-NiCr. The influence of discharge energy during electric spark alloying on the roughness, thickness, and proportion of the TiC carbide phase in the cermet coating has been established. It has been shown that during electric spark alloying, the material of the used SHS electrode and the surface of the substrate melt, their convective mixing occurs, and during crystallization, coatings are formed that consist of a strengthening phase TiC and iron-based solid solutions: Fe_9.64Ti_0.36, F_1.88C_0.12, and Cr-Ni-Fe-C. It has been found that the maximum size of TiC grains is formed on the surface of the cermet coating, and as they approach the substrate, their size decreases to less than 10 nm. It has been found that the microhardness of the surface of the resulting cermet coatings increased to 6.2 times compared to the microhardness of the original metal base, which was 2 GPa. The results of scanning electron microscopy and energy dispersive analysis of the surface of samples with and without cermet coating before and after corrosion tests are presented. The influence of disinfectants (2 and 100% Trilox, Wendelin, MegaDes-ortho) on the corrosion resistance of samples with and without developed protective cermet coatings at room and elevated temperatures up to 50°C and their exposure for 120 h has been established.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"55 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431626","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":"From Mixed Brookite/Anatase TiO2 Nanopowder to Sodium Titanates: Insight into Morphology, Structure, and Photocatalytic Performance","authors":"Nataša Tomić, Mirjana Grujić-Brojčin, Aleksandar Kremenović, Mirjana Novaković, Vladimir Lazović, Maja Šćepanović","doi":"10.1016/j.ceramint.2024.10.063","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.063","url":null,"abstract":"A method to obtain sodium titanate nanoribbons starting from a mixture of brookite and anatase TiO₂ nanopowder is described. As-prepared TiO₂ nanopowder with a major brookite phase was used as a precursor in an alkaline hydrothermal approach, where the temperature was kept at 200 ˚C. The influence of hydrothermal treatment and consequent annealing temperature (T=500 <span><span style=\"\"></span><span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" /&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"0.24ex\" role=\"img\" style=\"vertical-align: -0.12ex;\" viewbox=\"0 -51.7 0 103.4\" width=\"0\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"></math></span></span><script type=\"math/mml\"><math></math></script></span>) on the crystal structure, phase composition, and morphology of samples were investigated by X-ray powder diffraction (XRPD), Raman and FTIR spectroscopy, and electron microscopy techniques (FESEM, HRTEM). All these methods point out that the hydrothermally treated sample, containing the NaTi₃O₆(OH)(H₂O)₂, Na₂Ti₃O₇, and Na₂Ti₉O₁₉, is dominated by layer-structured sodium hydroxititanate dihydrate. The annealing leads to the formation of rare sodium titanates, Na₃Ti₆O₁₃ and Na₂Ti₉O₁₉, with tunnel structures where the hexatitanate with increased sodium content prevails. The photocatalytic activity of synthesized nanostructures was tested in the degradation process of Reactive Orange (RO16) azo-dye upon UV excitation. It appears that photocatalytic activity is lower after hydrothermal treatment, but subsequent annealing makes sodium titanate nanoribbons faster in the degradation of RO16. The research implies that these sodium titanate nanostructures are promising photocatalytic materials and should be considered in the future for removing different pollutants from water.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"67 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431629","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":"Effect of Doping Strategy on Electrochemical Performance of Grain Boundaries of Complex Perovskite Proton Conductor Ba3Ca1.18Nb1.82O−δ","authors":"Xinyu Cai, Ying Li, Lixin Yang, Xi Wang","doi":"10.1016/j.ceramint.2024.10.076","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.076","url":null,"abstract":"In this study, the electrical conductivity and electrochemical performance of Ba₃Ca_1.18Nb_1.82O_9−δwere improved by substituting niobium (Nb) element with bismuth (Bi) and ytterbium (Yb) elements. Three different proton conductors, namely, Ba₃Ca_1.18Nb_1.82O_9−δ (BCN), Ba₃Ca_1.18Nb_1.72Bi_0.1O_9−δ (BCNB), and Ba₃Ca_1.18Nb_1.72Yb_0.1O_9−δ (BCNYb) were prepared by solid state sintering. The electrochemical performance of BCNYb was found to be the best at 400–800 °C in the wet atmosphere. Their ion transport properties were studied by using the defect equilibrium model. The results show the improvement in proton conductivity of BCNYb. Analysis of distribution of relaxation time reveals the improvement in the grain boundary properties of BCNYb. Single cells were prepared with BCN, BCNB, and BCNYb electrolytes, and the performance of the resulting fuel cells was tested. The BCNYb-based fuel cell shows excellent electrochemical performance, indicating its promising potential as a solid-state electrolyte with excellent properties.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"2 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431625","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":"The growing global burden of thyroid cancer overdiagnosis","authors":"Cari M Kitahara","doi":"10.1016/s2213-8587(24)00269-9","DOIUrl":"https://doi.org/10.1016/s2213-8587(24)00269-9","url":null,"abstract":"No Abstract","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"50 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384067","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}