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{"title":"Mechanism of antimicrobial peptide AMP-17 for inhibition of Aspergillus flavus","authors":"Dongxu Song,&nbsp;Mingming Chen,&nbsp;Longbing Yang,&nbsp;Zhenlong Jiao,&nbsp;Jian Peng,&nbsp;Guo Guo","doi":"10.1186/s13765-024-00964-w","DOIUrl":"10.1186/s13765-024-00964-w","url":null,"abstract":"<div><p><i>Aspergillus flavus</i> is a pathogenic fungus with a broad host range, and its secondary metabolite, aflatoxin, recognized as the world’s first naturally occurring carcinogen. Nonetheless, the current control measures for <i>A</i>. <i>flavus</i> are inadequate, thus, it is imperative to seek alternative control methods for this species. In the present study, we identified an antimicrobial peptide AMP-17, which was found to effectively inhibit the conidial germination, growth, conidiation, and aflatoxin production of <i>A. flavus</i>. Additionally, our investigation revealed that the inhibition of <i>A. flavus</i> by AMP-17 is primarily attributed to increase cell membrane permeability, modify cell surface morphology, and compromise cellular integrity, as observed through flow cytometry and scanning electron microscopy. Transcriptome analysis indicated significant transcriptional changes in several genes associated with cell wall, cell membrane, cell cycle, detoxification, and aflatoxin biosynthesis in response to AMP-17 treatment, suggesting disruption of these cellular processes and pathways in <i>A. flavus</i>. Furthermore, AMP-17 exhibited a broad-spectrum antifungal activity against <i>Aspergillus</i> spp. These findings provide a strong theoretical basis for the potential use of AMP-17 as an effective antifungal agent against <i>A. flavus</i>.</p></div>","PeriodicalId":467,"journal":{"name":"Applied Biological Chemistry","volume":"67 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://applbiolchem.springeropen.com/counter/pdf/10.1186/s13765-024-00964-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced electrochemical performance of NiMn2O4 electrode synthesized via sol–gel technique for supercapacitor applications","authors":"Raman Duddi,&nbsp; Shivani,&nbsp;Shobhna Dhiman,&nbsp;Arun Kumar Singh,&nbsp;Navpreet Kamboj,&nbsp;Sanjeev Kumar","doi":"10.1007/s10854-024-14113-y","DOIUrl":"10.1007/s10854-024-14113-y","url":null,"abstract":"<div><p>Here, we report the synthesis of NiMn₂O₄ nanostructures using sol–gel technique. The synthesized NiMn₂O₄ electrode material exhibited a high BET surface area ~ 97.4 m²/g, contributing significantly to its enhanced electrochemical performance in supercapacitor applications The charge storage capability and cycle stability of the resulting NiMn₂O₄ nanostructures were investigated using cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a 1.0 M KOH electrolyte. These electrochemical techniques revealed that the as-prepared NiMn₂O₄ nanostructures revealed a significantly enhanced specific capacitance of 1270 F g⁻¹ at a current density of 0.3 A g⁻¹, indicating their excellent charge storage performance. Furthermore, the NiMn₂O₄ electrode demonstrates remarkable cycling stability, retaining 94% of its initial capacitance after 5000 cycles and a coulombic efficiency of 98% at a current density of 0.7 A g⁻¹. For supercapacitor application, the NiMn₂O₄ material delivers a high energy density ~ 47 Wh kg⁻¹ along with power density ~ 5404 W kg⁻¹. The exceptional storage properties of the NiMn₂O₄ electrode make it an ideal candidate for energy storage applications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Rayleigh-type surface wave propagation in a self-reinforced layer embedded overlying a sandy semi-infinite half-space","authors":"Suparna Roychowdhury,&nbsp;Abhijit Pramanik,&nbsp;Mostaid Ahmed,&nbsp;Magfura Pervin","doi":"10.1007/s12517-024-12158-1","DOIUrl":"10.1007/s12517-024-12158-1","url":null,"abstract":"<div><p>This work explores a complex system consisting of two separate layers: an upper layer consisting of a self-reinforced medium and a bottom layer made up of a half-space, especially a dry sandy medium. The surroundings that Rayleigh waves travel through are these two layers. Analytical solutions for the self-reinforced layer and the dry sandy half-space have been methodically derived using the variables separation method approach. After that, dispersion relation of the system has been found within a predetermined range. The computational capacity of MATHEMATICA software has allowed for the quantitative illustration of some important Rayleigh wave features. The characteristics give a thorough knowledge of wave behaviour in such layered material and include phase velocity, group velocity, and wave attenuation. The results draw special attention to the important ramifications for a range of real-world applications, especially in the areas of military infrastructure and coastal marine constructions. The design and stability of foundations subjected to wave-induced forces in marine structures depend heavily on an understanding of Rayleigh wave behaviour. The knowledge gained can be applied to military settings to improve the resilience and lifespan of structures by designing them to withstand the impact of vibrations and waves. Thorough investigation and findings of this study deepen our understanding of wave mechanics in layered media and provide important insights for engineering applications where complicated geological features and wave interactions are crucial. Emphasizing the wider significance and application of the research findings, this study not only increases theoretical knowledge but also offers helpful guidance for the design and analysis of structures in difficult situations. The study ends with conclusions and an outlook on possible future research directions.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"18 1","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cooperative load-carrying mechanism and control technology of the gob-side entry retaining by roof cutting and goaf filling","authors":"Hongchun Xu,&nbsp;Hang Yin,&nbsp;Pei Ge","doi":"10.1007/s12517-024-12160-7","DOIUrl":"10.1007/s12517-024-12160-7","url":null,"abstract":"<div><p>The deep mining industry commonly encounters significant challenges, including large displacements of the roof in the gob-side entry retaining, and large deformations and failures of the filling body, which seriously compromise the structural safety and reliability of mines. In this study, we focus on a specific engineering case of the 8318 working face from the Xinzhou coal mine, employing the methodology of roof cutting for pressure relief and goaf filling with gangue reinforcement. Through a comprehensive approach involving numerical analysis, theoretical derivation, and experimental validation, the key parameters of the gob-side entry retaining by roof cutting, and the cooperative load-carrying mechanism of gangue reinforcement in gob-side entry retaining by cutting roof were systematically investigated. The numerical simulations and underground mine pressure monitoring data demonstrated that the optimum roof cutting height is 10 m at an optimum roof cutting angle of 8°. The proposed cooperative load-carrying technology of gob-side entry retaining by roof cutting significantly reduced the peak vertical stresses in the centre of the roof and the filling body by 22.6% and 43.4%, respectively. Furthermore, individual pillar stress levels showed notable reductions, with the maximum working stress and average stress decreasing by 34.2% and 47.8%, respectively. The practical implementation of our study offers valuable guidance in the control of surrounding rock in deep mining, thereby contributing significantly to the advancement in the field of surrounding rock support control.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"18 1","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neuroinflammatory Response in the Traumatic Brain Injury: An Update","authors":"Amanda C. S. Kursancew,&nbsp;Cristiano Julio Faller,&nbsp;Daniel Paulo Bortoluzzi,&nbsp;Luana Budny Niero,&nbsp;Beatriz Brandão,&nbsp;Lucineia Gainski Danielski,&nbsp;Fabricia Petronilho,&nbsp;Jaqueline S. Generoso Ph.D.","doi":"10.1007/s11064-024-04316-4","DOIUrl":"10.1007/s11064-024-04316-4","url":null,"abstract":"<div><p>The central nervous system (CNS) comprises membranes and barriers that are vital to brain homeostasis. Membranes form a robust shield around neural structures, ensuring protection and structural integrity. At the same time, barriers selectively regulate the exchange of substances between blood and brain tissue, which is essential for maintaining homeostasis. Another highlight is the glymphatic system, which cleans metabolites and waste from the brain. Traumatic brain injury (TBI) represents a significant cause of disability and mortality worldwide, resulting from the application of direct mechanical force to the head that results in a primary injury. Therefore, this review aims to elucidate the mechanisms associated with the secondary injury cascade, in which there is intense activation of glial cells, dysfunction of the glymphatic system, glutamatergic neurotoxicity, additional molecular and biochemical changes that lead to a neuroinflammatory process, and oxidative stress and in which way they can be associated with cognitive damage that is capable of lasting for an extended period.</p></div>","PeriodicalId":719,"journal":{"name":"Neurochemical Research","volume":"50 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Ni and P substitution for B on the structure and soft magnetic properties of FeBPCuNb amorphous/nanocrystalline alloy","authors":"T. X. Huang,&nbsp;L. L. Lu,&nbsp;F. G. Chen,&nbsp;Aditya Jain,&nbsp;Y. G. Wang","doi":"10.1007/s10854-024-14080-4","DOIUrl":"10.1007/s10854-024-14080-4","url":null,"abstract":"<div><p>Alloying is usually an indispensable approach to optimize the magnetic performance of Fe-based amorphous/nanocrystalline alloys. This study focuses on tailoring the composition of the Fe_81.5B_10-<i>x</i>P_7.5Cu_0.5Nb_0.5M_<i>x</i> (M=Ni &amp; P, <i>x</i> = 0, 1, &amp; 2 at. %) alloys by substituting the B element with Ni and P. The substitution of ferromagnetic element Ni enhances the saturation magnetic induction intensity and the incorporation of P improves the amorphous formation ability and reduces coercivity. Moreover, substituting B elements with Ni and P widens the optimal heat treatment range. Additionally, the study explores the soft magnetic properties and microstructure evolution as functions of the annealing temperature based on the DSC analysis. The results reveal that the P8.5 alloy exhibits fine grains (16.5 nm) and low coercivity (3.5 A/m) coupled with high saturation magnetic induction intensity (1.77 T) after annealing.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of scanning small-angle X-ray scattering in the identification of sheet formation techniques in historical papers","authors":"Małgorzata Grzelec,&nbsp;Sylvio Haas,&nbsp;Agnieszka Helman-Ważny","doi":"10.1007/s00339-024-08157-4","DOIUrl":"10.1007/s00339-024-08157-4","url":null,"abstract":"<div><p>Among writing substrates produced historically in different regions of the world, paper is one of the most complex materials. Its complexity results not only from a variety of highly processed ingredients, which can be used in its production, but also from a variety of methods in which these materials are combined to form the fibrillar network referred to as paper. While material identification methods are well established in the analysis of historical papers, the identification of manufacturing technologies is still an under-researched topic, that requires the development of appropriate methods and measurement protocols. This paper reports on the results of a research project aimed at the application of synchrotron scanning small angle X-ray scattering (SAXS) method in the characterization of paper structure, with emphasis on the assessment of fibrillar orientation as a marker characteristic for different, historical papermaking technologies. The main objective of this study consists of the development of a measurement protocol involving the SAXS technique complemented by other analytical methods in the characterization of the fibrous paper structure.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-024-08157-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toxicity effects of microplastics individually and in combination with Aeromonas hydrophila on freshwater crayfish (Astacus leptodactylous).","authors":"Sara Bagheri, Siyavash Soltanian, Amir Ali Heidari, Amin Gholamhosseini","doi":"10.1007/s11356-024-35638-z","DOIUrl":"https://doi.org/10.1007/s11356-024-35638-z","url":null,"abstract":"<p><p>Opportunistic pathogens, such as Aeromonas hydrophila, can cause damage to freshwater crayfish (Astacus leptodactylous) in some situations. In addition to direct damage to the body, microplastics (MPs) can also be responsible for transmitting pathogens to the animal. Accordingly, this research was prepared to investigate the effects of MP on the damage caused by A. hydrophila exposure in A. leptodactylous. Hepatic oxidative biomarkers, blood biochemical indices, and clinical signs were investigated in freshwater crayfish co-exposed to MPs (500 and 1000 mg kg^-1) and A. hydrophila (5 and 10% of the median lethal dose (LD50)) for 30 days. In the hemolymph of infested crayfish with A. hydrophila, there were no significant changes in glutathione peroxidase activity or total antioxidant level. However, in some of the clinical parameters, exposure to MP alone had a significant effect. Cholesterol levels, glutathione peroxidase, catalase, and the activity of γ-glutamyltransferase reduced, conversely, glucose, malondialdehyde, and aspartate aminotransferase increased. After co-exposure to A. hydrophila and MPs, certain parameters elevated in the hemolymph of crayfish such as glucose, activity of alkaline phosphatase, aspartate aminotransferase, alanine aminotransferase, and lactate dehydrogenase. However, total protein, cholesterol, γ-glutamyltransferase, glutathione peroxidase, catalase activity, and total antioxidants decreased. In contrast, elevation in malondialdehyde content and superoxide dismutase activity was observed in the hepatocytes of crayfish after co-exposure to A. hydrophila and MPs. To summarize, the investigation demonstrated that the interaction of MPs and A. hydrophila in crayfish has a synergistic effect on various factors.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-sensitive detection of 4-chloro-2-methylphenoxyacetic acid herbicide using a porous Co-1,4-benzenedicarboxylate /montmorillonite nanocomposite sensor","authors":"Mona Elfiky,&nbsp;Moa’mena Abdo,&nbsp;Mona Darwesh,&nbsp;Nehal Salahuddin","doi":"10.1007/s00604-024-06765-8","DOIUrl":"10.1007/s00604-024-06765-8","url":null,"abstract":"<div><p>The detection of 4-chloro-2-methylphenoxyacetic acid (CMPA) herbicide is crucial due to the potential health risks linked to exposure through drinking water, air, and food, which may adversely affect liver and kidney functions. To address this environmental concern and promote sustainable agriculture, a sensitive carbon paste sensor incorporating a composite material was developed. The composite sensor is based on porous cobalt-1,4-benzenedicarboxylate metal–organic framework and exfoliated montmorillonite nanolayers (Co-OF/MMt). This sensor enables the voltammetric detection of CMPA in real soil samples using linear sweep adsorptive anodic stripping voltammetry (LS-AdASV), facilitating early and accurate monitoring of herbicide levels. The Co-OF/MMt nanocomposite was synthesized via a hydrothermal method involving the precipitation of Co-OF in the presence of MMt. Comprehensive characterization of the synthesized materials was carried out using Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), SEM-Energy dispersive X-ray spectroscopy (SEM–EDX) and surface area analysis (BET). The resulting modified carbon paste sensor, utilizing 1.0% Co-OF/MMt nanocomposite, exhibited superior electrochemical properties compared with the bare carbon paste sensor, possessing an electroactive surface area of 1004.1 m²/g with a minimal resistivity (R_ct) of 330 Ω. Under standard operating conditions, the developed sensor demonstrated detection limits of 0.03 nM and 0.1 nM across two broad linear ranges (0.03 to 0.10 nM – 0.10 to 1.0 nM) and (0.1 to 1.0 nM – 1.0 to 7.0 nM), respectively, for CMPA determination in both bulk and soil samples. These results pointed out the promising electrochemical modified sensor for the direct and simple detection of certain herbicides in environmental matrices, without the need for sample pretreatment steps. This capability supports sustainable development goals by enhancing effective environmental monitoring.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00604-024-06765-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distributed adaptive differential evolution algorithm for mathematical functions optimization and development of optical band pass filter","authors":"Arup Kumar Ghosh,&nbsp;Gautam Garai,&nbsp;Subhankar Bhattacharjee","doi":"10.1007/s11082-024-07931-1","DOIUrl":"10.1007/s11082-024-07931-1","url":null,"abstract":"<div><p>In this paper, we have discussed an innovative method for crafting a one-dimensional photonic crystal (1D PhC) based Optical Band Pass Filter (OBPF) using a Differential Evolution (DE) algorithm. 1D PhC-based OBPF plays a vital role in optical communication systems due to its ability to control light propagation. The proposed technique optimizes the photonic crystal structure to achieve the desired optical bandpass characteristics efficiently. The DE algorithm streamlines the design process and enables fast exploration of the design space. The effectiveness of this approach is validated through simulations and comparisons with the existing well-known methods. The OBPF comprises multiple dielectric layers with varying thicknesses and refractive indices to enable high transmission at specific wavelengths and low transmission elsewhere. The Optimization techniques are employed to adjust the parameters like thickness, refractive index, and number of layers. The DE method, thus, enhances the performance of OBPF. MATLAB implementation showcases significant outcomes with high <i>transmittance</i> (99.9727%), low <i>reflectance</i> (0.0273%), and a narrow <i>Full Width at Half Maximum</i> of 0.5 nm that affirms its efficacy.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}