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{"title":"Group 10 metal complexes with redox-active pincer ligands: electronic structure and reactivity","authors":"I. K. Mikhailov,&nbsp;Z. N. Gafurov,&nbsp;A. V. Sukhov,&nbsp;A. A. Kagilev,&nbsp;A. A. Zagidullin,&nbsp;D. G. Yakhvarov","doi":"10.1007/s11172-025-4677-4","DOIUrl":"10.1007/s11172-025-4677-4","url":null,"abstract":"<div><p>The continuing interest in pincer ligands is due to their unique ability to modify the properties of metal centers and thus the properties of the complexes they form. Using these ligands, one can finely tune the electronic and steric properties of the metal center. Moreover, the possibility to perform the redox process directly on the pincer ligand expands the range of applications of complexes based on them. The aim of this review is to analyze the state of the art in research into complexes of Group 10 metals (nickel, palladium, platinum) with redox-active pincer ligands. A brief introduction to the methods of investigation and modification of the electronic structure of the complexes is presented. The fundamental stoichiometric reactivity and relevant catalytic applications of the title systems are considered.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 7","pages":"1895 - 1913"},"PeriodicalIF":1.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetics of the heterocyclization of (E)-1,5-diphenylpent-1-en-4-yn-3-one phenylhydrazone in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene","authors":"D. A. Shkolnikov,&nbsp;I. S. Odin,&nbsp;D. M. Gusev,&nbsp;M. Yu. Ovchinnikov,&nbsp;S. A. Grabovskii,&nbsp;A. A. Golovanov","doi":"10.1007/s11172-025-4688-1","DOIUrl":"10.1007/s11172-025-4688-1","url":null,"abstract":"<div><p>The kinetics of the cyclization of (<i>E</i>)-1,5-diphenylpent-1-en-4-yn-3-one phenylhydrazone in ethylene glycol in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene at temperatures ranging from 373.15 to 407.15 K was studied. The reaction product is (<i>E</i>)-1,2-diphenyl-4-styryl-1<i>H</i>-pyrazole in a yield of 99%. The use of catalysis allows one to shorten the reaction time with retaining the yield of the product. The mechanism of the formation of a complex between the reactant and catalyst and the proton transfer from the reactant to the catalyst, which decreases the activation barrier for cyclization, is considered.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 7","pages":"2038 - 2043"},"PeriodicalIF":1.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laboratory experiment and theoretical analysis to determine the oxygen slippage factor in concrete materials","authors":"Lianjuan Miao,&nbsp;Chujie Jiao,&nbsp;Songsong He,&nbsp;Ming Wen,&nbsp;Xinchun Guan","doi":"10.1617/s11527-025-02741-7","DOIUrl":"10.1617/s11527-025-02741-7","url":null,"abstract":"<div><p>The gas penetration characteristics of concrete materials are important indicators that reflect their durability. The relationship between the slippage factor and intrinsic permeability is distinctly defined in theory and experiments for concrete materials. Oxygen permeability is tested by Cembureau method and concreate pore structure is gained by MIP measurement and SEM image. The pore tortuosity through a multi-diameter bundle capillary model was derived. As a result, a simplified equation between the slippage factor and intrinsic permeability was obtained through theory analysis and the relation is validated through gas penetration testing. And there is no direct correlation between pore size and slippage factor analyzed through provided equation. Aperture size gained by MIP method and slippage factor gained by Cembureau test method also shows no obvious regular relationship due to diversity of pore shapes.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 6","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853588","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}

{"title":"Heterogeneous catalytic hydrogenation of 5-ethylidene-2-norbornene in the liquid phase","authors":"V. V. Zamalyutin,&nbsp;E. V. Okuneva,&nbsp;A. Yu. Putin,&nbsp;A. I. Nichugovskii,&nbsp;V. R. Flid","doi":"10.1007/s11172-025-4686-3","DOIUrl":"10.1007/s11172-025-4686-3","url":null,"abstract":"<div><p>The liquid-phase hydrogenation of <i>E/Z</i>-5-ethylidene-2-norbornene (ENB) in the presence of the 0.25%Pd/γ-Al₂O₃ palladium catalyst (PC-25) under mild conditions proceeds sequentially and stereoselectively <i>via</i> the intermediate product <i>E/Z</i>-2-ethylidenenorbornane to form <i>endo/exo</i>-2-ethylnorbornane. All reaction products were identified, the main reaction routes were determined, and the material balance was studied. No destruction of the norbornane framework occurs in the reaction. The kinetic data indicate a distinct separation of the process steps and quantitative hydrogenation of the norbornene bond in the first step. The zero kinetic order with respect to substrate was determined for the first step. The activation energies for each step were determined (16 kJ mol⁻¹ for the hydrogenation of the norbornene double bond in <i>E/Z</i>-ENB and 25 kJ mol⁻¹ for the hydrogenation of the ethylidene bond). The decisive role of the additional strain energy concentrated on the intracyclic double bond of norbornenes in selective adsorption on the active site of the catalyst and, as a consequence, the full kinetic separation of the steps were shown.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 7","pages":"2019 - 2025"},"PeriodicalIF":1.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Election of the Full Members (Academicians), Corresponding Members, and Foreign Members of the Russian Academy of Sciences","authors":"","doi":"10.1007/s11172-025-4709-0","DOIUrl":"10.1007/s11172-025-4709-0","url":null,"abstract":"","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 7","pages":"2234 - 2256"},"PeriodicalIF":1.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response of stratified soil deposits to the severity of liquefaction phenomena: the Piniada Valley, Greece, case study","authors":"George Papathanassiou,&nbsp;Ilias Fikos,&nbsp;Sotiris Valkaniotis,&nbsp;Alexandros Stampolidis,&nbsp;Dimitra Rapti,&nbsp;Maria Taftsoglou,&nbsp;Riccardo Caputo","doi":"10.1007/s10064-025-04441-6","DOIUrl":"10.1007/s10064-025-04441-6","url":null,"abstract":"<div><p>The last decades, successful attempts have been made to quantify the liquefaction potential of a site using liquefaction indices, i.e., <i>LPI</i> and <i>LSN</i>. The accuracy of these indices has been recently questioned due to the mismatch of well-documented cases in stratified soil deposits. We applied these methods at point-bar deposits along the Piniada Valley, Greece, where widespread liquefaction phenomena were triggered by the 2021 Damasi earthquake, considering data derived by six CPTu. The aim of our study was twofold: firstly, examine the vertical and lateral heterogeneity of subsoil profiles within this specific geological-geomorphological feature and secondly investigate the role of the subsoil stratigraphy, on the severity of the ejected material. To address these issues, we additionally applied a geophysical method, i.e., ERT, aiming at testing its capability to detect clay-like and sand-like soil layers and validating the obtained tomographies with in-situ tests data. As a result, we conclude that the stratigraphy of the subsoil layers within a point-bar setting could significantly vary even within a distance of 10–15 m, thus affecting the liquefaction-related behavior and the ejecta potential. The latter seems to be successfully prognosticated by the recently developed approach of L_D-C_R. At this regard, the partially stratified soil deposits could not generate enough excess pore pressure to create cracks in the crust layer for reaching the surface. In contrast, sites with a thick continuous sand mixture can generate severe liquefaction manifestations even with an overlying crust layer more than 4 m-thick.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04441-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of Ion Temperature Gradient, Shear Flow, and Nonthermal Electron Population in the Formation of Global Vortices in Magnetoplasma","authors":"Javaria Razzaq,&nbsp;Arshad M. Mirza,&nbsp;Nazia Batool,&nbsp;Adnan Mehmood Bhatti","doi":"10.1007/s13538-025-01883-x","DOIUrl":"10.1007/s13538-025-01883-x","url":null,"abstract":"<div><p>In this study, we investigate the formation of global vortices in magnetized non-Maxwellian plasma subjected to density and temperature gradients, in the presence of ion-temperature-gradient (ITG) instability and shear flow. Utilizing the Braginskii model of transport equations, we analytically and numerically derive solutions for global vortices, highlighting their distinct characteristics compared to conventional dipolar vortices. We derive a modified linear dispersion relation and explore its various limiting cases, revealing that the growth rate of low-frequency ITG instability is influenced by the kappa factor and Cairn’s non-Maxwellian parameter. Numerical illustrations are provided using laboratory plasma parameters. Our findings are pertinent to understanding space plasmas and tokamak plasma environments, particularly in contexts involving resonant frequency heating and electron cyclotron heating experiments.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"55 5","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement in superluminal propagation and tunability from superluminal to subluminal propagation of a light pulse by heat loss and heat gain","authors":"Ibrahim Khan,&nbsp;Salah Uddin,&nbsp;Sohail Ahmad,&nbsp;Yamin Shah,&nbsp;Kefayat Ullah,&nbsp;Amin ur Rashid","doi":"10.1140/epjp/s13360-025-06703-4","DOIUrl":"10.1140/epjp/s13360-025-06703-4","url":null,"abstract":"<div><p>The subluminal and superluminal propagation of a light pulse has been investigated under the conditions of heat gain and heat loss in a four-level sodium atomic medium. We found a significant enhancement in the superluminal propagation of light with heat gain and heat loss. The negative group index is increased from − 9500 to − 14,000 and shifted to the positive/negative detuning region at heat gain/loss of <span>(Q = pm 2J)</span>. The superluminal group velocity increases from <span>(v_{{text{g}}} = - ;c/9500)</span> to <span>(v_{{text{g}}} = - ;c/14{,}000)</span> along with a shift to the positive/negative detuning region at a heat gain/loss of <span>(Q = pm 2J)</span>. The superluminal propagation is tuned to subluminal propagation with variation in control field Rabi frequencies. Furthermore, the subluminality is also enhanced with heat gain/loss and the collective phase of the control coupled driving fields. These findings may be useful in computer processing and medical imaging.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of chlorpyrifos and carbofuran residues in Kumari Beel, Bangladesh, and their coexposure effect on the cartilage development during zebrafish embryogenesis.","authors":"Tanjeena Zaman, Md Arif Hossain, Fahim Shariar Rakib, Md Shahadat Hossain, Tarannum Naz, Md Akon Bin Kawsar, Al Mamun, Mst Hajera Khatun, Md Anwarul Haque, Md Rafiqul Islam Khan, Md Faruk Hasan, Akinori Kawamura, Kyo Yamasu, Shuji Kishi, Md Zakir Sultan, Alam Khan","doi":"10.1007/s11356-025-36791-9","DOIUrl":"https://doi.org/10.1007/s11356-025-36791-9","url":null,"abstract":"<p><p>Chlorpyrifos (organophosphorus) and carbofuran (carbamate) are widely used pesticides in Bangladesh, raising concerns about their environmental and ecotoxicological impacts, particularly on aquatic life. In this study, pesticide concentrations in water, soil sediment, and fish samples collected from Kumari Beel, Rajshahi, Bangladesh, were measured using HPLC analysis. Concentrations were highest in fish, ranging from 0.2097 to 0.2671 ppm. Concentrations in soil sediment and water ranged from 0.0789 to 0.1037 ppm and 0.0009 to 0.0011 ppm, respectively. Although the toxic effects of these pesticides are well-known, their specific impact on cartilage development remains poorly understood. To determine the effect of these pesticides on craniofacial cartilage, zebrafish embryos were exposed to individual and combined treatments of chlorpyrifos and carbofuran at concentrations up to 0.5 ppm. Single pesticide treatments did not affect body length, but coexposure significantly shortened body length and caused trunk curvature, indicating vertebral malformation. Alcian blue cartilage staining revealed that carbofuran and its coexposure with chlorpyrifos caused malformation in craniofacial cartilage, as manifested by significant alteration in the Meckel's-palatoquadrate angle. Using EGFP-zTERF1 transgenic zebrafish, we found that coexposure to carbofuran and chlorpyrifos significantly affected the telomere diameter in the eye lens. RT-PCR analysis revealed that the cartilage-related genes chrdl2 and wisp2 were significantly affected by simultaneous pesticide exposure, where chrdl2 was upregulated, and wisp2 was downregulated. Overall, carbofuran and chlorpyrifos coexposure induce craniofacial cartilage malformation and alter associated gene regulations.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858785","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":"Exposures to environmental pollutants and risk of cervical cancer: a systematic review and meta-analysis of observational studies","authors":"Yong Zheng,&nbsp;Qingping Peng,&nbsp;Li Liu,&nbsp;Yan Liu,&nbsp;Jing Mei,&nbsp;Changjiang Lei,&nbsp;Chunlei Deng,&nbsp;Sijia Han","doi":"10.1186/s12302-025-01142-5","DOIUrl":"10.1186/s12302-025-01142-5","url":null,"abstract":"<div><p>Environmental pollutants exposures have been linked to numerous adverse health outcomes, including cervical cancer. However, the evidence has been inconsistent. Therefore, this study aimed, for the first time, to systematically evaluate the relationship between exposure to environmental pollutants and cervical cancer by conducting a meta-analysis to synthesize the effect measures from previously published studies. We conducted this review in accordance with PRISMA guidelines, ensuring a comprehensive and systematic approach. Our search spanned Scopus, PubMed, and Web of Science, targeting relevant English-language articles published up to October 16, 2024. To provide a reliable analysis, we used a conservative random-effects Restricted Maximum Likelihood (REML) meta-analysis for all associations examined. The robustness of our results was tested using leave-one-out sensitivity analyses. Additionally, we assessed publication bias through Begg's test, Egger's test, funnel plots, and the trim-and-fill method. From our extensive search across multiple databases, we initially identified 2802 articles, with 11 meeting our criteria for this review, and four selected for meta-analysis. Our meta-analysis found a slight but significant increase in cervical cancer risk linked to environmental pollution, with an overall standardized incidence ratio (SIR) of 1.01 (95% CI 1.00, 1.01). There was considerable variability among the studies (I² = 80.44%). Subgroup analyses revealed a higher risk associated with ambient air pollution (SIR = 2.80, 95% CI 0.83–3.62) compared to other environmental pollutant types. These results highlight the significant impact of environmental pollutants on cervical cancer risk, underscoring the importance of standardized exposure assessments and further research in diverse populations.</p></div>","PeriodicalId":546,"journal":{"name":"Environmental Sciences Europe","volume":"37 1","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s12302-025-01142-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}