Springer最新文献

{"title":"Interference and Bell States in q-Deformed Quantum Oscillator a Wigner Function Perspective","authors":"Efe Türbedar,&nbsp;Ferhat Nutku","doi":"10.1007/s10773-025-06126-y","DOIUrl":"10.1007/s10773-025-06126-y","url":null,"abstract":"<div><p>In this paper, we investigate the interference and Bell states of a q-deformed harmonic oscillator. The Wigner functions of the interference states and the four Bell states are calculated and discussed.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-06126-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of non-specular meteor trail echoes detected with Gadanki MST radar","authors":"K. Chenna Reddy","doi":"10.1007/s12036-025-10093-5","DOIUrl":"10.1007/s12036-025-10093-5","url":null,"abstract":"<div><p>Non-specular meteor trail echoes are radar reflections from plasma instabilities, which are caused by field-aligned irregularities (FAI). Here, we reported on characteristics of non-specular trail echoes frequently detected with 53 MHz Gadanki (<span>(13.5^circ )</span>N, <span>(79.2^circ )</span>E) MST radar. These echoes are characteristically different in size and nature, having non-specular reflections over several range-bins with several seconds of duration. We presented few representative examples of such echoes detected with Gadanki MST radar. These examples were analysed and discussed on case by case to understand their evolutionary mechanism. Based on the current understanding of meteor trail theories, we also discussed the most possible factors responsible for the evolution of such echoes.</p></div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"46 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007841","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":"Assessment of flood hazards using morphometric compound factor and hypsometric integral in lower Gandak basin, India","authors":"Sunil Kumar Patel,&nbsp;Parthapratim Ghosh,&nbsp;Dev Sen Gupta,&nbsp;Nidhi Gahlot,&nbsp;Jayanta Das","doi":"10.1007/s10661-025-14475-8","DOIUrl":"10.1007/s10661-025-14475-8","url":null,"abstract":"<div><p>Catastrophic climate events such as floods significantly impact infrastructure, agriculture, and the economy. The lower Gandak River basin in India is particularly flood-prone, with Bihar experiencing annual losses of life and property due to massive flooding. Identifying flood-prone zones in this region is essential. Recently, geospatial techniques have become vital tools for determining flood-susceptible zones and managing floods. This study uses high-resolution ALOS DEM data to quantitatively analyse various morphometric and morphotectonic characteristics of 35 sub-watersheds (SW1 to SW35) to understand the drainage basin’s hydrological behaviour, particularly during the monsoon season. The compound factor weightage, calculated from morphometric analysis of 17 parameters, identifies flood-susceptible zones. Detailed statistical analysis revealed similarities and dissimilarities between each sub-watershed parameter. Sub-watersheds were classified into highly susceptible (26.24–24.00), moderately susceptible (23.18–21.12), and slightly susceptible (20.94–18.29) categories. Highly susceptible sub-watersheds (2, 4, 6, 7, 8, 9, 11, 12, and 13) exhibit high erosion potential and greater flood devastation potential. Moderately susceptible sub-watersheds (1, 5, 10, 14, 15, 17, 20, 22, 23, 24, 30, and 34) show lesser flood effects. Slightly susceptible sub-watersheds (3, 16, 18, 19, 21, 25, 26, 27, 28, 29, 31, 32, 33, and 35) are less affected. Hierarchical cluster and compound factor analyses confirm that highly susceptible sub-watersheds need higher mitigation measures to minimise impacts on life and livestock. Implementing mitigation techniques across all susceptibility classes is crucial to prevent further loss of human life and livestock. The study’s outcomes have direct implications for effective watershed management.\u0000</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Vitamin B12 is Essential for Growth, Innate Immunity, Antioxidant Capacity, Fatty Acid and Amino Acid Metabolism, and Ammonia Tolerance in Pacific White Shrimp, Penaeus vannamei","authors":"Nalin Medagoda,&nbsp;Kyeong-Jun Lee","doi":"10.1007/s10126-025-10512-2","DOIUrl":"10.1007/s10126-025-10512-2","url":null,"abstract":"<div><p>This study assessed the optimum dietary vitamin B₁₂ requirement of Pacific white shrimp, <i>Penaeus vannamei</i>, for growth, feed efficiency, hemocyte counts, innate immunity, and ammonia stress resistance. Semi-purified experimental diets were prepared by adding vitamin B₁₂ at 0.0, 0.5, 1.0, 2.0, and 4.0 mg/kg (Con, CB0.5, CB1.0, CB2.0, and CB4.0) and a negative control (NCon) diet was prepared with 0.3% tetracycline hydrochloride. Four replicate groups of shrimp (0.17 ± 0.01 g, 32 shrimp per tank) were fed one of the diets at 3–6% of body Weight for 8 weeks. CB2.0 diet significantly increased weight gain and feed efficiency of the shrimp compared to Con diet. The expressions of insulin-like growth factor (IGF)-1, IGF-binding protein, regulatory-associated protein of mammalian target of rapamycin-like, crustin, methylmalonyl-CoA mutase, and methionine synthase-like genes in hepatopancreas were significantly upregulated with increasing dietary vitamin B₁₂ levels. Total hemocyte count, nitroblue tetrazolium, lysozyme, and antiprotease activities were significantly increased at higher vitamin B₁₂ inclusion levels above 1.00 mg/kg. Phenoloxidase, superoxide dismutase, glutathione peroxidase activities, and survival during the ammonia challenge were significantly higher in C2.0 group than in Con group. After the challenge test, C4.0 and C1.0 groups exhibited significantly higher nitroblue tetrazolium and phenoloxidase activities, respectively. Increasing dietary vitamin B₁₂ levels linearly increased hemolymph, hepatopancreas, and fecal vitamin B₁₂ levels. The polynomial regression analysis of final body weight indicated that the optimum dietary vitamin B₁₂ requirement for juvenile Pacific white shrimp is 2.02 mg/kg.\u0000</p></div>","PeriodicalId":690,"journal":{"name":"Marine Biotechnology","volume":"27 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007893","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}

{"title":"2, 2, 3, 3, 4, 4, 4-Heptafluoro-1-Butanol and 2, 2, 3, 3, 4, 4, 4-Heptafluorobutyl Acetate: Physicochemical, Thermophysical, and Spectral Data","authors":"Andrei V. Polkovnichenko,&nbsp;Evgenia I. Kovaleva,&nbsp;Alexey V. Kisel’,&nbsp;Sergey Ya. Kvashnin,&nbsp;Maria V. Mironova,&nbsp;Egor V. Lupachev","doi":"10.1007/s10765-025-03640-3","DOIUrl":"10.1007/s10765-025-03640-3","url":null,"abstract":"<div><p>New physicochemical data for 2, 2, 3, 3, 4, 4, 4-heptafluoro-1-butanol (≥ 0.998 mass fr.) and 2, 2, 3, 3, 4, 4, 4-heptafluorobutyl acetate (≥ 0.994 mass fr.) are presented. The dependences of the saturated vapor pressure of 2, 2, 3, 3, 4, 4, 4-heptafluoro-1-butanol and 2, 2, 3, 3, 4, 4, 4-heptafluorobutyl acetate on temperature were obtained. The coefficients of Antoine’s equation are calculated based on the experimental temperature–pressure dependence data. This article also presents data on the rheological properties (viscosity and apparent activation energy for the viscous flow) of the studied compounds. The dependencies of refractive index and excess volume (density) on temperature are studied. Fourier transform infrared spectroscopy spectra are also provided. The experimental data presented in this paper extend and complement the information presented in the scientific literature. These data are background information and a starting point for further research in engineering design of chemical processing equipment. In addition, the received data may support the development of property models of pure substances and systems containing them, such as phase behavior and the processes underlying it.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"46 11","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007912","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":"Observations of the Occultation of the Star TYC 1318-01031-1 by Asteroid (52) Europa on September 9, 2020","authors":"V. V. Kleshchonok,&nbsp;V. L. Karbovsky,&nbsp;V. I. Kashuba,&nbsp;O. V. Angelsky,&nbsp;M. V. Lashko","doi":"10.3103/S0884591325050046","DOIUrl":"10.3103/S0884591325050046","url":null,"abstract":"<p>This article presents the results of observations and data processing of the occultation of star TYC 1318-01031-1 by asteroid (52) Europa conducted at multiple sites. Data from both professional astronomers and experienced amateur observers are utilized. Professional observations have been conducted with an 80-cm diameter telescope equipped with a QHY174M GPS camera, which provides precise UTC time-stamping for each exposure via its integrated GPS receiver. Amateur observations have been carried out with various telescopes and cameras, with the data recorded in video format. The video recordings were processed using a unified methodology to derive the photometric occultation light curve. Ingress and egress times of the occultation at each observing site are determined from the extracted photometric light curves of TYC 1318-01031-1. A proprietary method is applied to combine occultation chords from geographically dispersed sites where observations have been acquired independently [1]. Subsequent processing employs the proposed combination method to compute each site’s offset from the occultation path centerline. Chords of asteroid (52) Europa for each observing site are then calculated from the measured ingress and egress times of the occultation. Calculated asteroid chords are compared to the 3D shape model of the asteroid from the Database of Asteroid Models from Inversion Techniques (DAMIT). This approach yields strong validation of the technique and demonstrates that amateur observations, taking into account potential UTC time-stamping errors, can be used to reconstruct asteroid shapes. The results also confirm that the shape and dimensions of asteroid (52) Europa in the DAMIT database are accurate.</p>","PeriodicalId":681,"journal":{"name":"Kinematics and Physics of Celestial Bodies","volume":"41 5","pages":"203 - 208"},"PeriodicalIF":0.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007938","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":"Genome-wide identification analysis of aldo–keto reductase gene family in cotton and GhAKR40 role in salt stress tolerance","authors":"Yiman Liu,&nbsp;Qiankun Liu,&nbsp;Yuqing Hou,&nbsp;Guangxing Zhang,&nbsp;Jiangping Han,&nbsp;Zhaoguo Li,&nbsp;Aziz Khan,&nbsp;Zhongli Zhou,&nbsp;Xiaoyan Cai,&nbsp;Yanchao Xu,&nbsp;Jie Zheng,&nbsp;Fang Liu","doi":"10.1007/s10142-025-01678-y","DOIUrl":"10.1007/s10142-025-01678-y","url":null,"abstract":"<div><p>In this study, a comprehensive genome-wide identification and analysis of the aldo–keto reductase (AKR) gene family was performed to explore the role of <i>Gossypium hirsutumAKR40</i> under salt stress in cotton. A total of 249 AKR genes were identified with uneven distribution on the chromosomes in four cotton species. The diversity and evolutionary relationship of the cotton AKR gene family was identified using physio-chemical analysis, phylogenetic tree construction, conserved motif analysis, chromosomal localization, prediction of cis-acting elements, and calculation of evolutionary selection pressure under 300 mM NaCl stress. The real-time qPCR showed that genes encoding members of the aldo–keto reductase (AKR) family in <i>Gossypium hirsutum</i> displayed distinct expression patterns various stress treatments. Specifically, the expression levels of certain genes were significantly upregulated under drought and salt stress. Notably, the role of <i>GhAKR40</i> gene in salt stress tolerance was validated using virus-induced gene silencing (VIGS) technology in cotton. The <i>GhAKR40</i>-silenced plants experienced leaf wilting under salt stress compared with wild-type and null-control plants. In addition, a series of physio-biochemical such as DAB staining and measurement of RWCL (relative water content in leaves) indexes also indicated that silencing of the <i>AKR40</i> gene reduced the salt tolerance in cotton. Transcriptome sequencing and analysis of the VIGS-silenced lines suggest that <i>GhAKR40</i> may enhance salt tolerance in cotton plants by potentially participating in plant-pathogen interactions and the MAPK signaling pathway, thereby modulating both pathways. These data demonstrate that <i>GhAKRs</i> play a significant role in salt stress tolerance. <i>GhAKR40</i> functions as a positive regulator with a significant impact on stress tolerance. This study not only establishes a theoretical foundation for the comprehensive utilization of resistant germplasm resources in cotton but also paves the way for further exploration of resistance genes in the species.</p></div>","PeriodicalId":574,"journal":{"name":"Functional & Integrative Genomics","volume":"25 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007840","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}

{"title":"Impact behavior of plywood core laminated with flax-epoxy composite skin","authors":"John Susainathan,&nbsp;Enrique Barbero,&nbsp;Sonia Sanchez-Saez,&nbsp;Florent Eyma,&nbsp;Arthur Cantarel","doi":"10.1007/s00107-025-02324-x","DOIUrl":"10.1007/s00107-025-02324-x","url":null,"abstract":"<div><p>The introduction of sandwich structures made from materials that are environmentally friendly, light, and strong enough to carry the applied loads is one way of reducing the carbon footprint of the transport industry. This work investigates the impact behaviour of a structure composed of a plywood core and flax/epoxy composite skins, as a proposal for a sandwich structure that takes advantage of the high longitudinal strength of raw timber along the transverse direction across the grain. The variation of peak force, indentation, impact bending stiffness and absorbed energy over a wide range of impact energies is studied, comparing the sandwich structure with the plywood alone. The failure modes (matrix in tension, matrix in compression and delamination) that occur in both the plywood and the sandwich structure have also been studied. The sandwich structure shows superior impact resistance, making it a promising alternative to conventional sandwich structures that is both sustainable and lightweight.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02324-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007918","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":"Enhancing water resistance of medium density fibreboards via periodate oxidation of thermomechanical fibres","authors":"Jaime García-Garrido,&nbsp;Daniel Martinez-Filgueira,&nbsp;Aitor Barrio,&nbsp;Arantxa Eceiza,&nbsp;Ainara Saralegi,&nbsp;Álvaro Tejado-Etayo","doi":"10.1007/s00107-025-02325-w","DOIUrl":"10.1007/s00107-025-02325-w","url":null,"abstract":"<div><p>Medium density fibreboard (MDF) is an essential material in global manufacturing, valued for its versatility and cost-effectiveness. Enhancing its water resistance is critical for broadening its applications, especially in humid and outdoor environments. This study investigates the enhancement of MDF water resistance through the chemical modification of the constituent wood fibres (in this case, thermo-mechanical pulp or TMP) through periodate oxidation. The treatment with sodium metaperiodate results in the formation of dialdehyde fibres (DA-TMP) which are then spray-coated with a phenol-formaldehyde resin, following the industrial procedures, and converted into a MDF through proper hot pressing. Comprehensive evaluation of the physical, mechanical, and biological properties is conducted, along with the study of fire behaviour comparing boards made from both oxidized and non-oxidized fibres. The results reveal that periodate oxidation reduces water absorption by 54% and thickness swelling by 56%, indicating significant changes in the fibres’ chemistry and morphology. Despite a slight decrease in mechanical properties, the overall performance of DA-TMP based MDF confirms this as a promising method for achieving superior durability in moisture-prone environments, including outdoor constructions. Importantly, the biological resistance of the material remains unaffected by the oxidation of the fibres, ensuring continued protection against biological attack and long-term durability. Additionally, fire performance tests show that DA-TMP based MDF exhibit reduced peak heat release and smoke production, further enhancing their suitability for fire-sensitive applications. Consequently, this research contributes to expand the use and durability of wood-based materials across various industrial sectors, offering a sustainable and effective alternative to traditional moisture resistance treatments.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02325-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007924","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":"Conformal Ricci solitons on three-dimensional homothetic hyperbolic Kenmotsu manifolds and their applications in spacetimes","authors":"Avijit Sarkar,&nbsp;Tarak Mandal,&nbsp;Gaurab Mitra","doi":"10.1140/epjc/s10052-025-14544-9","DOIUrl":"10.1140/epjc/s10052-025-14544-9","url":null,"abstract":"<div><p>The principal objective of the present paper is to characterize certain properties of three-dimensional homothetic hyperbolic Kenmotsu manifolds (HHKM) with conformal Ricci solitons. Also, we explore conformal Ricci and conformal gradient Ricci solitons on <span>(eta )</span>-Einstein homothetic hyperbolic Kenmotsu manifolds and demonstrate an example of three-dimensional HHKM to verify the derived results. Moreover, we analyze conformal Ricci solitons in the framework of super quasi-Einstein spacetimes.\u0000</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 9","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-14544-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}