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High Performance of Formaldehyde Detection Based on Fluorescent Material Carbon Quantum Dots-Cu Nanoparticles as Working Electrode

IF 0.9

Surface Engineering and Applied Electrochemistry Pub Date : 2025-03-04 DOI: 10.3103/S1068375524700339

Ismaun Ismaun, Halmuniati Halmuniati, Balda Balda, Irwan Irwan, Zul Arham

{"title":"High Performance of Formaldehyde Detection Based on Fluorescent Material Carbon Quantum Dots-Cu Nanoparticles as Working Electrode","authors":"Ismaun Ismaun, Halmuniati Halmuniati, Balda Balda, Irwan Irwan, Zul Arham","doi":"10.3103/S1068375524700339","DOIUrl":"10.3103/S1068375524700339","url":null,"abstract":"Herein, carbon quantum dots (CQDs) incorporated with Cu nanoparticles (CuNPs), abbreviated as CQDs-CuNPs, were successfully synthesized by using a facile hydrothermal treatment of an economical approach. Furthermore, the nanocomposite CQDs-CuNPs were modified mechanically with graphene becoming Gr/CQDs-CuNPs, and then used as an electrode. The optical structural properties, morphology, crystal structure, and functional group of the CQDs have been studied by using several analytical techniques such as ultraviolet—visible spectrophotometry, scanning electron microscopy, X-ray detection, and Fourier-transform infrared spectroscopy. Experimental results show that the Gr/CQDs-CuNPs electrode exhibits a sensitive electrochemical response to formaldehyde, with a linear current response to formaldehyde concentration in a wide concentration range. In addition, the Gr/CQDs-CuNPs electrode also showed significant catalytic activity towards formaldehyde reduction. This study also considers factors that influence the response of electrodes to formaldehyde, such as the pH of the electrolyte solution, the measurement rate, and the working potential. The results of this research have broad potential applications in formaldehyde detection in various fields, including environmental monitoring, food analysis, and detection of formaldehyde toxicity in consumer products. In addition, the Gr/CQDs-CuNPs electrode concept can be used as a basis for the development of more sensitive and selective electrochemical sensors for various other organic compounds.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"60 6","pages":"752 - 760"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533272","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}

引用次数: 0

Effect of sufentanil on the proliferation, apoptosis, and epithelial-mesenchymal transition of ovarian cancer cells by regulating the SMAD3/SNAIL signaling pathway

IF 2.9 4区生物学

Journal of Molecular Histology Pub Date : 2025-03-04 DOI: 10.1007/s10735-025-10373-y

Fei Zhao, Guiqing Liu, Lijuan Xiong, Liang Yao, Lijun Wang, Zheng Zhang

{"title":"Effect of sufentanil on the proliferation, apoptosis, and epithelial-mesenchymal transition of ovarian cancer cells by regulating the SMAD3/SNAIL signaling pathway","authors":"Fei Zhao, Guiqing Liu, Lijuan Xiong, Liang Yao, Lijun Wang, Zheng Zhang","doi":"10.1007/s10735-025-10373-y","DOIUrl":"10.1007/s10735-025-10373-y","url":null,"abstract":"<div>To study sufentanil’s effect on the proliferation, apoptosis, and epithelial-mesenchymal transition (EMT) of ovarian cancer cells by modulating the SMAD3/SNAIL signaling pathway. Ovarian cancer A2780 cells were exposed to sufentanil at varying concentrations of 0 ng/mL, 20 ng/mL, 40 ng/mL, 60 ng/mL, 80 ng/mL, and 100 ng/mL. The proliferation of A2780 cells was assessed using the CCK-8 method; A2780 cells were randomly divided into three groups: CON group (normal culture), SUF group (60 ng/mL sufentanil intervention), and SUF + ACA group (60 ng/mL sufentanil and 100 ng/mL activin A intervention). After 48 h of culture, cell migration was evaluated by the scratch assay; Cell invasion was assessed using the Transwell chamber assay; Cell apoptosis was measured via flow cytometry; The growth status of the cells was observed under an optical microscope; The expression of N-cadherin, E-cadherin, SMAD3, TGF-β, and SNAIL proteins was detected by Western blot. When the concentration of sufentanil was ≥ 20 ng/mL, it dose-dependently inhibited the proliferation of ovarian cancer A2780 cells; In comparison to the CON group, the number of A2780 cells in the SUF group was significantly reduced, some cells detached, cell migration and invasion abilities, and the expression levels of N-cadherin, SMAD3, TGF-β, and SNAIL proteins decreased, while the apoptosis rate and E-cadherin protein expression levels increased (P < 0.05); In comparison to the SUF group, the growth status of A2780 cells in the SUF + ACA group was good, cell migration and invasion abilities, and the expression levels of N-cadherin, SMAD3, TGF-β, and SNAIL proteins increased, while the apoptosis rate and E-cadherin protein expression levels decreased (P < 0.05). Sufentanil may inhibit the proliferation and epithelial-mesenchymal transition of ovarian cancer cells and promote cell apoptosis by inhibiting the SMAD3/SNAIL signaling pathway.</div>","PeriodicalId":650,"journal":{"name":"Journal of Molecular Histology","volume":"56 2","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DOPA Decarboxylase (DDC) in Pacific Oysters: Characterization and Role in Tyrosine Metabolism and Melanogenesis

IF 2.6 3区生物学

Marine Biotechnology Pub Date : 2025-03-04 DOI: 10.1007/s10126-025-10439-8

Kunyin Jiang, Hong Yu, Lingfeng Kong, Shikai Liu, Shaojun Du, Qi Li

{"title":"DOPA Decarboxylase (DDC) in Pacific Oysters: Characterization and Role in Tyrosine Metabolism and Melanogenesis","authors":"Kunyin Jiang, Hong Yu, Lingfeng Kong, Shikai Liu, Shaojun Du, Qi Li","doi":"10.1007/s10126-025-10439-8","DOIUrl":"10.1007/s10126-025-10439-8","url":null,"abstract":"<div>DOPA decarboxylase (DDC) plays a crucial role in the physiological functions of animals by participating in the dopaminergic system. However, the functions of DDC in shellfish remain poorly understood. The Pacific oyster (Crassostrea gigas) is an extensively cultivated shellfish. In this study, we characterized a DDC gene, designated CgDDC, from C. gigas. The CgDDC gene encodes a protein that contains a Pyridoxal_deC domain, which features specific binding sites for pyridoxal-5’-phosphate (PLP) and L-DOPA. CgDDC exhibits a significantly higher expression level in the black shell oyster strain than the white strain. In vitro enzymatic reaction assays demonstrated that CgDDC catalyzes the conversion of L-DOPA to dopamine. In vivo experiments revealed that inhibiting CgDDC activity reduced the expression of genes associated with tyrosine metabolism. Furthermore, the knockdown of CgDDC caused a decline in cAMP level and reduced transcription of genes involved in the cAMP-mediated melanogenesis. Additionally, treatment with L-α-DOPA inhibited CgDDC enzyme activity and cAMP-mediated melanogenesis; however, dopamine supplementation countered this inhibition, maintaining gene expression and melanin content at baseline levels. Collectively, our findings suggest that CgDDC is intricately involved in regulating tyrosine metabolism and melanogenesis in C. gigas.</div>","PeriodicalId":690,"journal":{"name":"Marine Biotechnology","volume":"27 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lineaments and hydrothermal alteration mapping in the Arkawit area, NE Sudan: insights from remote sensing

IF 1.827

Arabian Journal of Geosciences Pub Date : 2025-03-04 DOI: 10.1007/s12517-025-12222-4

Talha Mohamed Yousif, Olawale Kayode Aromolaran, Khalid Mustafa Kheiralla

{"title":"Lineaments and hydrothermal alteration mapping in the Arkawit area, NE Sudan: insights from remote sensing","authors":"Talha Mohamed Yousif, Olawale Kayode Aromolaran, Khalid Mustafa Kheiralla","doi":"10.1007/s12517-025-12222-4","DOIUrl":"10.1007/s12517-025-12222-4","url":null,"abstract":"<div>Utilizing remote sensing data is a common protocol in mineral exploration, particularly during the initial stages of identifying alteration zones and understanding the interrelationships between tectonic structures and mineral deposits. The primary objective of this research is to identify and optimize lineaments for the purpose of locating areas of hydrothermal alterations with regard to orogenic gold deposits in the Arkawit area of NE Sudan’s Haya terrain. Landsat-8 OLI, ASTER, and SRTM DEM data were employed. A suite of digital image processing techniques, including false color composites, band ratio, decorrelation stretching, and principal component analysis, was employed to extract useful information and derive insights from the datasets. Landsat-8 OLI effectively delineates the hydrothermal alteration zones, which are predominantly located in the central part of the study area. In addition, the ASTER data has revealed distinctive argillic, phyllic, and propylitic alteration characteristics. The integration of lineaments extracted from Landsat-8 OLI and SRTM DEM analyses culminated in the identification of three primary directions, namely, NE-SW, N-S, and E-W. Subsequently, the resulting alteration zones were classified into four categories based on their intensity: high, moderate, low, and very low. This study demonstrates that the density of lineaments within the study area is positively correlated with the intensity of the alteration zones.</div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"18 4","pages":""},"PeriodicalIF":1.827,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533061","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}

引用次数: 0

Enhanced cycling stability and rate capability of Na0.75Ni0.33Mn0.67O2 cathode material by Zn/F co-doping for sodium-ion batteries

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2025-03-04 DOI: 10.1007/s10854-025-14464-0

Tao Shen, Hongxia Chen, Hu Fu, Xinyu Zhang, Mengcheng Zhou, Shuangwu Xu, Hanchi Hu, Haichen Li, Hongming Zhou

{"title":"Enhanced cycling stability and rate capability of Na0.75Ni0.33Mn0.67O2 cathode material by Zn/F co-doping for sodium-ion batteries","authors":"Tao Shen, Hongxia Chen, Hu Fu, Xinyu Zhang, Mengcheng Zhou, Shuangwu Xu, Hanchi Hu, Haichen Li, Hongming Zhou","doi":"10.1007/s10854-025-14464-0","DOIUrl":"10.1007/s10854-025-14464-0","url":null,"abstract":"<div>P2-type layered transition metal oxides with high theoretical specific capacity and operating voltage are considered as one of the highly promising cathode materials for sodium-ion batteries, but the poor cycling stability attributed to the P2-O2 phase transition and Na+/vacancy ordering limits their practical applications. In this paper, a hydrothermal method is used to investigate the improvement of the electrochemical properties of Na0.75Ni0.33Mn0.67O2 by Zn/F synergistic doping. The synergistic modification of Zn/F not only adjusts the valence distribution of Mn and improves the specific capacity, but also suppresses the phase transition under high voltage and the dissolution of transition metal ions. In particular, Na0.75Ni0.23Mn0.67Zn0.1O1.95F0.05 (ZF-5) has excellent cycling performance (82.1% capacity retention after 100 cycles at 1C), compared to just 11.6% for the Na0.75Ni0.33Mn0.67O2(ZF-0). Above that, the rate performance is also significantly improved, with the specific capacity reaching 94.7 mAh g−1 even at a high current density of 5 C. Therefore, the Zn/F double doping modification strategy provides a simple and effective method for designing high-performance layered oxide cathode materials.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 7","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533105","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}

引用次数: 0

Excellent CMAS Corrosion Resistance of a Novel Multicomponent High-Entropy Rare Earth (Yb0.25Sc0.25Er0.25Tm0.25)2Si2O7 Disilicate

IF 2.1 3区材料科学

Oxidation of Metals Pub Date : 2025-03-04 DOI: 10.1007/s11085-025-10330-w

Sehreish Abrar, Faisal Nazeer, Abdul Malik

引用次数: 0

Synthesis of Josephson Parametric Devices Based on Nonlinear Frequency Mixing

IF 1.6 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2025-03-04 DOI: 10.1007/s10948-025-06946-3

Liangliang Yang, Kaiyong He, Genting Dai, Mingjun Cheng, Jianshe Liu, Wei Chen

引用次数: 0

Opening up and closing down citizen participation in the development of a sustainable neighborhood energy system

IF 4.6 3区工程技术

Energy, Sustainability and Society Pub Date : 2025-03-04 DOI: 10.1186/s13705-025-00515-1

Maren Wesselow, Torsten Grothmann, Bernd Siebenhüner

{"title":"Opening up and closing down citizen participation in the development of a sustainable neighborhood energy system","authors":"Maren Wesselow, Torsten Grothmann, Bernd Siebenhüner","doi":"10.1186/s13705-025-00515-1","DOIUrl":"10.1186/s13705-025-00515-1","url":null,"abstract":"<div><h3>Background</h3>Citizen participation is integral to the governance of sustainability transformations. Long-term participatory processes undergo various phases of opening up and closing down various scopes of the participation—with significant consequences for the legitimacy and impact of the participation process.<h3>Methods</h3>To gain a better understanding of these processes, we address the question of how and why participation processes are opened up or narrowed down. Through document analysis and key-informant interviews, we evaluate a case of long-term citizen participation linked to the development of a sustainable neighborhood energy system in northwestern Germany.<h3>Results</h3>Results show that normative, substantive, and instrumental imperatives contribute to opening-up dynamics in participation processes. Closing-down dynamics were observed in the narrowing of thematic, spatial, temporal, and methodological scopes, as well as in the range of the actors involved. Reasons for closing down were financial and temporal restrictions, conflicting interests, the need for expert input in decision making about highly technological questions, the institutionalisation of participation, and stakeholder fatigue.<h3>Conclusions</h3>This study provides a new framework for analysing citizen participation while highlighting the complexities and interrelations associated with citizen participation within the context of technological and urban development.</div>","PeriodicalId":539,"journal":{"name":"Energy, Sustainability and Society","volume":"15 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://energsustainsoc.biomedcentral.com/counter/pdf/10.1186/s13705-025-00515-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the average intensity of general model vortex higher-order cosh-Gaussian beams propagating through an oceanic turbulence medium

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2025-03-04 DOI: 10.1007/s11082-025-08073-8

H. Benzehoua, F. Saad, M. Bayraktar, S. Chatzinotas, A. Belafhal

{"title":"Analysis of the average intensity of general model vortex higher-order cosh-Gaussian beams propagating through an oceanic turbulence medium","authors":"H. Benzehoua, F. Saad, M. Bayraktar, S. Chatzinotas, A. Belafhal","doi":"10.1007/s11082-025-08073-8","DOIUrl":"10.1007/s11082-025-08073-8","url":null,"abstract":"<div>We analyze the propagation characteristics of a General Model vortex Higher-order cosh-Gaussian beam (GMvHchGB) in a turbulent oceanic medium. The beam’s intensity expression is derived using the Huygens–Fresnel integral formula. Through numerical simulations, the average intensity distribution is evaluated, focusing on the effects of oceanic turbulence and the incident beam parameters. The results indicate that the received intensity depends on the initial parameters and the oceanic conditions. Notably, under stronger oceanic turbulence, the GMvHchGB a transformation, losing its initial structure and quickly evolving into a Gaussian profile. This transformation is influenced by a reduction in the dissipation rate of turbulent kinetic energy per unit mass or an increase in the dissipation rate of mean-square temperature and the ratio of temperature to salinity fluctuation. Additionally, the initial beam parameters significantly affect the GMvHchGB’s intensity in the oceanic turbulent medium. These findings offer insights into potential applications in underwater optical communication between ships, divers, and submarines, as well as imaging systems.</div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 3","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533187","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}

引用次数: 0

Electrospark Deposition of Hard, Wear-Resistant and Anti-Friction Coatings on γ-TiAl Substrates in a Controlled Gas Environment

IF 0.9

Surface Engineering and Applied Electrochemistry Pub Date : 2025-03-04 DOI: 10.3103/S1068375524700315

E. I. Zamulaeva, K. A. Kuptsov, M. I. Petrzhik, S. K. Mukanov, P. A. Loginov, E. A. Levashov

{"title":"Electrospark Deposition of Hard, Wear-Resistant and Anti-Friction Coatings on γ-TiAl Substrates in a Controlled Gas Environment","authors":"E. I. Zamulaeva, K. A. Kuptsov, M. I. Petrzhik, S. K. Mukanov, P. A. Loginov, E. A. Levashov","doi":"10.3103/S1068375524700315","DOIUrl":"10.3103/S1068375524700315","url":null,"abstract":"The development of hard, wear-resistant, and anti-friction Ti–Zr–Al-based coatings via electrospark deposition for the protection of Ti–48Al–2Cr–2Nb alloy using a Zr electrode in controlled gaseous environments was carried out. In the Ar atmosphere, a 50 µm thick coating based on β-Zr solid solution with low values of Young’s modulus (83 GPa) and of hardness (6.2 GPa) is formed. In C2H4, a coating with a β‑Zrss matrix, in which (Zr,Ti)C grains (20–400 nm) of the carbide phase and the Laves phase h-Zr2Al are uniformly distributed, is formed, characterized by moderate hardness (10.6 GPa) and Young’s modulus (144 GPa) values. In the N2 atmosphere, a bilayer coating based on (Ti,Zr)N grains with a TiAl matrix in the lower and TiAl3 in the upper layer of the coating is formed. The upper layer is characterized by a higher content of (Ti,Zr)N grains, with the grain size being smaller than in the bottom layer. The coating has high wear resistance, a low friction coefficient (0.12), high hardness (14.6 GPa) and Young’s modulus (40 GPa). The thickness of the coatings deposited in C2H4 and N2 atmospheres was 25–35 μm.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"60 6","pages":"728 - 741"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533271","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}

引用次数: 0