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Role of Multi-Electron and Multi-Orbital Effects in High-Order Harmonic Generation of Benzonitrile Molecules
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作者 Man Xing Jun Wang +1 位作者 Xi Zhao Shushan Zhou 《Chinese Physics Letters》 2025年第4期43-49,共7页
Multi-electron and multi-orbital effects play a crucial role in the interaction of strong laser fields with complex molecules.Here,multi-electron effects encompass not only electron-electron Coulomb interactions and e... Multi-electron and multi-orbital effects play a crucial role in the interaction of strong laser fields with complex molecules.Here,multi-electron effects encompass not only electron-electron Coulomb interactions and exchangecorrelation effects but also the interference between the dynamics of different electron wave packets. 展开更多
关键词 electron wave packets multi electron effects multi orbital effects high order harmonic generation benzonitrile molecules exchangecorrelation effects complex moleculesheremulti electron interference dynamics
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Independent and interactive effects of N and P additions on foliar P fractions in evergreen forests of southern China 被引量:1
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作者 Qingquan Meng Zhijuan Shi +3 位作者 Zhengbing Yan Hans Lambers Yan Luo Wenxuan Han 《Forest Ecosystems》 2025年第1期66-73,共8页
Fertilization or atmospheric deposition of nitrogen(N)and phosphorus(P)to terrestrial ecosystems can alter soil N(P)availability and the nature of nutrient limitation for plant growth.Changing the allocation of leaf P... Fertilization or atmospheric deposition of nitrogen(N)and phosphorus(P)to terrestrial ecosystems can alter soil N(P)availability and the nature of nutrient limitation for plant growth.Changing the allocation of leaf P fractions is potentially an adaptive strategy for plants to cope with soil N(P)availability and nutrient-limiting conditions.However,the impact of the interactions between imbalanced anthropogenic N and P inputs on the concentrations and allocation proportions of leaf P fractions in forest woody plants remains elusive.We conducted a metaanalysis of data about the concentrations and allocation proportions of leaf P fractions,specifically associated with individual and combined additions of N and P in evergreen forests,the dominant vegetation type in southern China where the primary productivity is usually considered limited by P.This assessment allowed us to quantitatively evaluate the effects of N and P additions alone and interactively on leaf P allocation and use strategies.Nitrogen addition(exacerbating P limitation)reduced the concentrations of leaf total P and different leaf P fractions.Nitrogen addition reduced the allocation to leaf metabolic P but increased the allocation to other fractions,while P addition showed opposite trends.The simultaneous additions of N and P showed an antagonistic(mutual suppression)effect on the concentrations of leaf P fractions,but an additive(summary)effect on the allocation proportions of leaf P fractions.These results highlight the importance of strategies of leaf P fraction allocation in forest plants under changes in environmental nutrient availability.Importantly,our study identified critical interactions associated with combined N and P inputs that affect leaf P fractions,thus aiding in predicting plant acclimation strategies in the context of intensifying and imbalanced anthropogenic nutrient inputs. 展开更多
关键词 Anthropogenic nutrient inputs Individual and combined effects Interactive effects Leaf phosphorus fractions Nitrogen and phosphorus additions Nutrient-utilization strategies Woody plants
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Immunomodulatory effects and clinical application of exosomes derived from mesenchymal stem cells 被引量:1
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作者 Yang-Fei Yi Zi-Qi Fan +5 位作者 Can Liu Yi-Tong Ding Yao Chen Jie Wen Xiao-Hong Jian Yu-Fei Li 《World Journal of Stem Cells》 2025年第3期1-15,共15页
Exosomes(Exos)are extracellular vesicles secreted by cells and serve as crucial mediators of intercellular communication.They play a pivotal role in the pathogenesis and progression of various diseases and offer promi... Exosomes(Exos)are extracellular vesicles secreted by cells and serve as crucial mediators of intercellular communication.They play a pivotal role in the pathogenesis and progression of various diseases and offer promising avenues for therapeutic interventions.Exos derived from mesenchymal stem cells(MSCs)have significant immunomodulatory properties.They effectively regulate immune responses by modulating both innate and adaptive immunity.These Exos can inhibit excessive inflammatory responses and promote tissue repair.Moreover,they participate in antigen presentation,which is essential for activating immune responses.The cargo of these Exos,including ligands,proteins,and microRNAs,can suppress T cell activity or enhance the population of immunosuppressive cells to dampen the immune response.By inhibiting lymphocyte proliferation,acting on macrophages,and increasing the population of regulatory T cells,these Exos contribute to maintaining immune and metabolic homeostasis.Furthermore,they can activate immune-related signaling pathways or serve as vehicles to deliver microRNAs and other bioactive substances to target tumor cells,which holds potential for immunotherapy applications.Given the immense therapeutic potential of MSC-derived Exos,this review comprehensively explores their mechanisms of immune regulation and therapeutic applications in areas such as infection control,tumor suppression,and autoimmune disease management.This article aims to provide valuable insights into the mechanisms behind the actions of MSC-derived Exos,offering theoretical references for their future clinical utilization as cell-free drug preparations. 展开更多
关键词 Mesenchymal stem cells EXOSOMES Immunomodulatory effects Clinical application Therapeutic potential
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Impact behavior and strain rate effects of artificial limestone by MICP 被引量:1
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作者 Yaru Lv Lin Wu +2 位作者 Zhigang Duan Yuchen Su Dongdong Zhang 《Biogeotechnics》 2025年第2期72-80,共9页
Natural cemented calcareous sand and limestone are highly complex and not well understood in terms of the me-chanical behavior due to the difficulty of obtaining undisturbed samples from far sea.This paper proposes an... Natural cemented calcareous sand and limestone are highly complex and not well understood in terms of the me-chanical behavior due to the difficulty of obtaining undisturbed samples from far sea.This paper proposes an artificial method in a laboratory setting using microbial-induced carbonate precipitation(MICP)to simulate the natural process of cementation of limestone.The artificially cemented sand has a high degree of similarity with the natural weakly limestone in three aspects:(1)the mineral composition of the cemented material is also granular calcite and acicular aragonite;(2)the microstructure in interconnected open pore network can be gradually closed and contracted with cementation.The porosity reaches to approximately 9.2%;(3)both the stress-strain relationship and the unconfined strength closely resemble that of natural weakly limestone.Furthermore,both static and dynamic behaviors of artificial limestone were studied by quasi-static compression tests and Split Hopkinson Pressure Bar(SHPB)tests,finding that the unconfined strength of weakly artifical limestone exponentially increases with increasing strain rate.A rate-dependent bond strength was proposed and implemented in software to reveal the mechanism of strain rate effects.It is found that the loading velocity is too high to keep in sync with the initiation and propagation of cracks under impact loading.This delay-induced viscosity may restrict the movement of the surrounding balls,thus increasing resistance. 展开更多
关键词 Weakly limestone MICP artificial cementation Calcareous sand Limestone impact behavior Strain rate effects
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Late effects of the treatment of childhood cancer
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作者 Jelena Roganovic 《World Journal of Clinical Cases》 SCIE 2025年第7期6-12,共7页
Excellent progress has been made in the last few decades in the cure rates of pediatric malignancies,with more than 80%of children with cancer who have access to contemporary treatment being cured.However,the therapie... Excellent progress has been made in the last few decades in the cure rates of pediatric malignancies,with more than 80%of children with cancer who have access to contemporary treatment being cured.However,the therapies responsible for this survival can also produce adverse physical and psychological long-term outcomes,referred to as late effects,which appear months to years after the completion of cancer treatment.Research has shown that 60%to 90%of childhood cancer survivors(CCSs)develop one or more chronic health conditions,and 20%to 80%of survivors experience severe or life-threatening complications during adulthood.Therefore,understanding the late side effects of such treatments is important to improve the health and quality of life of the growing population of CCSs. 展开更多
关键词 SURVIVORSHIP CANCER CHILDREN TREATMENT Late effects
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Solid-state Effects on Luminescence Properties of TADF Emitters Based on Pyrido[2,3-b]pyrazine-Dihydrophenazasilines Donor-acceptor Structures:Theoretical Study
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作者 LI Yuheng LIU Meiqi +2 位作者 HOU Baoming PAN Yuyu YANG Bing 《发光学报》 北大核心 2025年第2期354-365,共12页
Thermally activated delayed fluorescence(TADF)molecules have outstanding potential for applications in organic light-emitting diodes(OLEDs).Due to the lack of systematic studies on the correlation between molecular st... Thermally activated delayed fluorescence(TADF)molecules have outstanding potential for applications in organic light-emitting diodes(OLEDs).Due to the lack of systematic studies on the correlation between molecular structure and luminescence properties,TADF molecules are far from meeting the needs of practical applications in terms of variety and number.In this paper,three twisted TADF molecules are studied and their photophysical properties are theoretically predicted based on the thermal vibrational correlation function method combined with multiscale calculations.The results show that all the molecules exhibit fast reverse intersystem crossing(RISC)rates(kRISC),predicting their TADF luminescence properties.In addition,the binding of DHPAzSi as the donor unit with different acceptors can change the dihedral angle between the ground and excited states,and the planarity of the acceptors is positively correlated with the reorganization energy,a property that has a strong influence on the non-radiative process.Furthermore,a decrease in the energy of the molecular charge transfer state and an increase in the kRISC were observed in the films.This study not only provides a reliable explanation for the observed experimental results,but also offers valuable insights that can guide the design of future TADF molecules. 展开更多
关键词 solid-state effects thermally activated delayed fluorescence(TADF) theoretical study multi-scale simulation
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Effects of the dietary Withania somnifera on stressrelief and hepatoprotection in darkbarbel catfish(Pelteobagrus vachelli)
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作者 LI Sendong JIANG Wenbo +6 位作者 FENG Mengjia TANG Na CUI Han XU Siqi ZHU Zhongqiu FENG Ke XU Hongyan 《水产学报》 北大核心 2025年第10期108-131,共24页
Withania somnifera(L.)Dunal(WS),or Ashwagandha,is used clinically against arthritis,anxiety and insomnia etc,however,its potential in aquafeeds is largely unexplored.We investigated the stress-alleviation and hepatopr... Withania somnifera(L.)Dunal(WS),or Ashwagandha,is used clinically against arthritis,anxiety and insomnia etc,however,its potential in aquafeeds is largely unexplored.We investigated the stress-alleviation and hepatoprotective mechanisms of dietary WS supplementation in adult female darkbarbel catfish.Fish were fed with WS dietary for 5 weeks,subjected to a physical stressor(saline injection),and sampled.Brain were processed for RNA-seq to identify differentially expressed genes(DEGs)linked to stress;serum were assayed for stress-and immune-related biochemical markers;livers were examined for lipid content(Oil Red O staining)and proliferation(PCNA immunos-taining).Network pharmacology were employed to construct a"compound-target"net-work:The bioactive compounds of WS were retrieved from ChEBI and PCIDB,probable targets predicted via Swiss Target Prediction,and the“WS-ingredient-target”regulatory network was constructed using Cytoscape;key ligand-protein interactions were validated by molecular docking.Findings were replicated in juvenile fish and in SG3 cells challenged with Withanolide A.Physical stress evoked 1451 DEGs in control brains,whereas WS-supplemented reduced this to 397,indicating marked mitigation of the oxid-ative-and immune-stress response.Network pharmacology and molecular docking pre-dicted that 13 bioactive compounds in WS,especially Withanolide A and Withanolide J,can interact with targets such as MAPK8,CRHR1,NR3C2,and IARS1,being associated with stress and liver function regulation respectively.Moreover,it was proved that Withanolide A could significantly modulate stress response in juveniles and enhanced pro-liferation potency of SG3 cells.Intriguingly,in theadult female darkbarbel catfish,dietary WS lowered serum cortisol,glucose,ROS,TNF-α,and IL-6(P<0.05),up-regulated hepatocyte PCNA expression,and allievated stress-induced liver injury.These findings provide novel insights and vital basis for elucidating the mechanisms whereby herbs,including WS act in stress-relief and hepatoprotection in darkbarbel catfish.And provide a framework for advancing traditional Chinese medicine(TCM)applications in aquaculture. 展开更多
关键词 Pelteobagrus vachelli Withania somnifera(L.)Dunal(WS) oxidative stress network pharmacology hepatopro-tective effects
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Short-term and long-term effects of sevoflurane inhalation vs propofol total intravenous anesthesia in gastrectomy for gastric cancer
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作者 Zhi Wang Ji-Wen Cheng Kuai-Yun Yu 《World Journal of Gastrointestinal Oncology》 2025年第11期91-102,共12页
BACKGROUND Gastric cancer is a major global health issue,and the perioperative period critic-ally influences patient outcomes.The different effects of sevoflurane inhalation anesthesia and propofol total intravenous a... BACKGROUND Gastric cancer is a major global health issue,and the perioperative period critic-ally influences patient outcomes.The different effects of sevoflurane inhalation anesthesia and propofol total intravenous anesthesia on intraoperative stability,postoperative complications,and long-term oncologic outcomes in patients with gastric cancer undergoing radical gastrectomy remain unclear.AIM To compare the effects of sevoflurane inhalation anesthesia and propofol total in-travenous anesthesia on clinical outcomes,including intraoperative indicators,postoperative complications,adverse effects,pain scores,and survival.METHODS This single-center retrospective cohort study included 204 patients who underw-ent radical gastrectomy for gastric cancer from February 2019 to December 2022.Patients were assigned to either the sevoflurane group(n=103)or the propofol group(n=101)based on intraoperative anesthetic regimen.Standardized protoc-ols for anesthesia management,intraoperative monitoring,and postoperative analgesia were applied.Baseline characteristics;intraoperative metrics;adverse events;complications;Visual Analog Scale(VAS)scores at 2,4,6,24,and 48 hours;and survival outcomes were retrospectively collected.Group comparisons were performed usingχ2 for categorical variables,t test for continuous variables,RESULTS Baseline demographic and clinical characteristics were similar between groups.No significant differences were observed in intraoperative indicators or most 30-day postoperative outcomes,including length of stay,emergency department visits,and readmission rates.The propofol group showed elevated mean VAS pain score at 24 hours postoperatively,but no differences were found at other time points.The propofol group also had significantly higher postoperative nausea incidence and transiently higher systolic/diastolic blood pressure and heart rate at the time of incision than the sevoflurane group.No significant differences were seen in overall rates or severity of postoperative complications,intraoperative adverse events,or in overall survival and progression-free survival.CONCLUSION In patients undergoing radical gastrectomy for gastric cancer,sevoflurane and propofol anesthesia demonstrated similar profiles regarding intraoperative safety,postoperative complications,adverse events,postoperative pain,and long-term survival.The selection of anesthesia can be personalized without significantly affecting periop-erative or oncologic outcomes. 展开更多
关键词 Gastric cancer Radical gastrectomy ANESTHESIA SEVOFLURANE PROPOFOL Long-term effects
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Pressure and temperature effects resulting from impact onto materials of different reactivity
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作者 Andreas Heine Matthias Wickert 《Defence Technology(防务技术)》 2025年第2期221-230,共10页
The pressure and temperature increase resulting from the impact of different threats onto target materials is analyzed with a unified laboratory-scale setup.This allows deriving qualitative information on the occurrin... The pressure and temperature increase resulting from the impact of different threats onto target materials is analyzed with a unified laboratory-scale setup.This allows deriving qualitative information on the occurring phenomenology as well as quantitative statements about the relative effects sizes as a function of target material and threat.The considered target materials are steel,aluminum,and magnesium.As threats,kinetic energy penetrator,explosively formed projectile,and shaped charge jet are used.For the investigated combinations,the measured overpressures vary by a factor of up to 5 for a variation of the material,by a factor of up to 7 for a variation of the threat,and by a factor larger than 15for a simultaneous variation of both.The obtained results as well as the experimental approach are relevant for the basic understanding of impact effects and risks due to material reactivity.The paper combines two main aims.Firstly,to provide a summary of own prior work in a coherent journal article and,secondly,to review and discuss these earlier results with a new perspective. 展开更多
关键词 Impact effects PRESSURE TEMPERATURE Risk assessment Material reactivity
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Correction: Residual effects of butisanstar and clopyralid herbicides on Gossypium hirsutum L. growth: insights from a pot experiment
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作者 SOLTANI TOULAROUD Ali Ashraf GOLCHIN Ahmad ROUHI‑KELARLOU Tohid 《Journal of Cotton Research》 2025年第3期457-457,共1页
Correction:J Cotton Res 8,27(2025)https://doi.org/10.1186/s42397-025-00228-y During the publication process of the original article(Soltani Toularoud et al.2025),the article title has been wrongly captured.Te article ... Correction:J Cotton Res 8,27(2025)https://doi.org/10.1186/s42397-025-00228-y During the publication process of the original article(Soltani Toularoud et al.2025),the article title has been wrongly captured.Te article title should be corrected from:of butisanstar and clopyralid herbicides on Gos-sypium hirsutum L.growth:insights from a pot experiment to:Residual efects of butisanstar and clopyralid herbi-cides on Gossypium hirsutum L.growth:insights from a pot experiment Te original article(Soltani Toularoud et al.2025)has been updated.Te publisher apologizes to the authors and readers for the inconvenience caused. 展开更多
关键词 butisanstar Gossypium hirsutum pot experiment residual effects CLOPYRALID
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Applying palaeoecological analogues to contemporary challenges:community-level effects of canopy gaps caused by systematic decline of a prevalent tree species
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作者 Julia Webb Anne E.Goodenough 《Journal of Forestry Research》 2025年第1期293-310,共18页
Temperate woodland vegetation is initially determined by spatiotemporal and historical factors,mediated by complex biotic interactions.However,catastrophic events such as disease outbreaks(e.g.,sweet chestnut blight,a... Temperate woodland vegetation is initially determined by spatiotemporal and historical factors,mediated by complex biotic interactions.However,catastrophic events such as disease outbreaks(e.g.,sweet chestnut blight,ash dieback),infestations of insect pests,and human-accelerated climate change can create canopy gaps due to systematic decline in,or loss of,tree species that was once an important part of the canopy.Resultant cascade effects have the potential to alter the composition of woodland ecosystems quickly and radically,but inherent lag times make primary research into these effects challenging.Here,we explore change in woodland vegetation at 10 sites in response to canopy opening using the Elm Decline,a rapid loss of Ulmus in woodlands across northwestern Europe~5800 years ago that coexisted alongside other stressors such as increasing human activity,as a palaeoecological analogue.For arboreal taxa,community evenness significantly decreased,within-site turnover significantly increased,and richness remained unchanged.Changes in arboreal taxa were highly site-specific but there was a substantial decline in woody climbing taxa,especially Hedera(ivy),across the majority of sites.For shrub taxa,richness significantly increased but evenness and turnover remained consistent.Interestingly,however,there was a significant increase in abundance of shrubs at 70%of sites,including Calluna(heather),Ilex(holly)and Corylus(hazel),suggesting structural change.Surprisingly,there was no change in richness,evenness or turnover for herb taxa,possibly because change was highly variable spatially.However,there was a marked uptick in the disturbance indicator Plantago(plantain).Overall,these findings suggest that woodlands with sustained reduction in,or loss of,a tree species that once formed an important part of the canopy has profound,but often spatially idiosyncratic,impacts on vegetation diversity(richness),composition(evenness),stability(turnover),and on abundance of specific taxa,especially within the shrub layer.Use of this palaeoecological analogue,which was itself complicated by cooccurring changes in human activity,provides a valuable empirical insight into possible cascade effects of similar change in canopy opening in contemporary settings,including Ash Dieback. 展开更多
关键词 Canopy opening Community composition Palaeoecological analogue Disturbance Cascade effects
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Preface to the Special Issue on Atmospheric and Oceanic Processes in the Antarctic and Their Climate Effects: 40 Years of CHINARE
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作者 Zhaomin WANG Bingyi WU +7 位作者 Wen ZHOU Jiping LIU Anmin DUAN Xianyao CHEN Ruibo LEI Minghu DING Xichen LI Wenju CAI 《Advances in Atmospheric Sciences》 2025年第12期2395-2398,共4页
In November 1984,China launched its first expedition to the Southern Ocean and the Antarctic continent,culminating in the establishment of its first year-round research station—Great Wall Station—on the Antarctic Pe... In November 1984,China launched its first expedition to the Southern Ocean and the Antarctic continent,culminating in the establishment of its first year-round research station—Great Wall Station—on the Antarctic Peninsula in February 1985.Forty years later,in February 2024,China’s fifth research station,Qinling Station,commenced operations on Inexpress-ible Island near Terra Nova Bay. 展开更多
关键词 Great Wall Station atmospheric processes oceanic processes climate effects China research stations Qinling Station ANTARCTIC
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Exploration on the Chemical Constituents and Pharmacological Effects of Korla Fragrant Pears
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作者 Ping Cheng Chunmei Shi +4 位作者 Xinyu Dai Hengbo Li Cunfei Lv Mingjie Qiu Wenpin Xu 《Journal of Clinical and Nursing Research》 2025年第4期280-285,共6页
Korla fragrant pears are one of the“famous,excellent,and special”fruits in Xinjiang.They belong to the white pear variety in the genus Pyrus of the Rosaceae family.With a long-standing planting history and strong re... Korla fragrant pears are one of the“famous,excellent,and special”fruits in Xinjiang.They belong to the white pear variety in the genus Pyrus of the Rosaceae family.With a long-standing planting history and strong regional characteristics,they are mainly produced in southern Xinjiang.Due to unique natural conditions such as large temperature differences between day and night and sufficient sunlight,Korla fragrant pears have a crispy texture,a sweet but not cloying taste,and their flesh is delicate and juicy,with excellent quality.Korla fragrant pears contain a variety of bioactive substances,mainly including polysaccharides,polyphenolic compounds,flavonoid compounds,triterpenoids,and sterols.They have medical effects such as“moistening the lungs,calming the heart,reducing phlegm,anti-inflammation,relieving cough,and resolving carbuncle toxins”.Uyghur and Mongolian medicine often use them as a good dietary therapy product.Based on recent literature reports,this paper reviews the main chemical constituents and pharmacological effects of Korla fragrant pears,aiming to provide references for the research and utilization of the deep processing of Korla fragrant pears. 展开更多
关键词 Korla fragrant pears Chemical constituents ANTIOXIDATION IMMUNOMODULATION Pharmacological effects
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Short-Term Spillover Effects in High-order Moments of Stocks, Foreign Currency Exchange and Bitcoin with Intraday Data
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作者 Xinying He 《Proceedings of Business and Economic Studies》 2025年第3期172-181,共10页
This paper employs Granger causality analysis and the generalized impulse response function(GIRF)to study the higher-order moment spillover effects among Bitcoin,stock markets,and foreign exchange markets in the U.S.U... This paper employs Granger causality analysis and the generalized impulse response function(GIRF)to study the higher-order moment spillover effects among Bitcoin,stock markets,and foreign exchange markets in the U.S.Using intraday high-frequency data,the research focuses on the interactions across higher-order moments,including volatility,jumps,skewness,and kurtosis.The results reveal significant bidirectional spillover effects between Bitcoin and traditional financial assets,particularly in terms of volatility and jump behavior,indicating that the cryptocurrency market has become a crucial component of global financial risk transmission.This study provides new theoretical perspectives and policy recommendations for global asset allocation,market regulation,and risk management,underscoring the importance of proactive management measures in addressing the complex risk interactions between cryptocurrencies and traditional financial markets. 展开更多
关键词 Higher-order moments Intraday data Spillover effects Bitcoin Risk management
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The crucial role of intrinsic properties in determining the biological effects of CeO_(2)nanocrystals
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作者 Min Sun Wanqin Dai +7 位作者 Yuhui Ma Mengyao Liu Xiao He Zhuda Song Yun Wang Jiaqi Shen Fang Yang Zhiyong Zhang 《Green Energy & Environment》 2025年第9期1881-1891,共11页
Nano ceria(nano-CeO_(2))has been widely applied in various fields of industry and daily life,however,knowledge regarding the biological effects of nano-CeO_(2)with different intrinsic physicochemical properties remain... Nano ceria(nano-CeO_(2))has been widely applied in various fields of industry and daily life,however,knowledge regarding the biological effects of nano-CeO_(2)with different intrinsic physicochemical properties remains limited.In this study,we investigated the impact of nano-CeO_(2)with different properties on the growth of a typical environmental species(romaine lettuce,Lactuca sativa L.)by exposing the plant to four types of CeO_(2)(rod-like nano-CeO_(2)(RNC),cubic nano-CeO_(2)(CNC),spherical nano-CeO_(2)(SNC)and commercial irregular CeO_(2)(CIC))during the germination stage.The results indicated that different types of CeO_(2)exhibited varying inhibitory effects on plant growth.RNC and SNC significantly inhibited the elongation of roots and shoots,while CNC and CIC did not have a significant impact.We further examined the distribution and biotransformation of the four CeO_(2)in plant tissues using transmission electron microscopy(TEM)and synchrotron X-ray absorption near edge structure(XANES).Specifically,the positively charged RNC and SNC were more readily adsorbed onto the root surface,and needle-like nanoclusters were deposited in the intercellular space inside the roots.The absolute content of Ce(III)in the roots romaine lettuce was in the order of RNC>SNC>>CNC>>CIC.The size and shape(i.e.,exposed crystal surface)of the materials affected their reactivity and dissolution ratios,and zeta potentials affected their bioavailability,both of which influenced the overall contents of Ce^(3+)ions in plant tissues.Thus,these characteristics together led to different biological effects.These findings highlight the importance of considering the intrinsic properties of nano-CeO_(2)when assessing their environmental and biological effects. 展开更多
关键词 Nano-CeO_(2) Biological effects Intrinsic properties BIOTRANSFORMATION BIOAVAILABILITY
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Proteomic insights from extracellular vesicles into the molecular mechanisms of health effects induced by Per-and polyfluoroalkyl substances
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作者 Yanping Li Yadan Luo +8 位作者 Yang Liu Na Li Kai Huang Lingxiangyu Li Zhigang Li Chao Han Nali Zhu Yawei Wang Guibin Jiang 《Journal of Environmental Sciences》 2025年第4期395-411,共17页
Per-and polyfluoroalkyl substances(PFASs)can induce a range of adverse health effects,with the precise molecularmechanisms remaining elusive.Extracellular vesicles(EVs)have demonstrated their potential to elucidate un... Per-and polyfluoroalkyl substances(PFASs)can induce a range of adverse health effects,with the precise molecularmechanisms remaining elusive.Extracellular vesicles(EVs)have demonstrated their potential to elucidate unknown molecular mechanisms.Building upon the close alignment of their biological functions with the observed health effects of PFASs,this study innovatively focuses on proteomic insights from EVs into the molecular mechanisms underlying the systemic health effects of PFASs.Through rat exposure experiments and proteomics technology,it not only demonstrated the occurrence of PFASs in EVs but also revealed the alterations in the serum EVs and the expression of their protein cargos following mixed exposure to PFASs,leading to changes in related pathways.These changes encompass various biological processes,including proteasome activity,immune response,cytoskeletal organization,oxidative stress,cell signaling,and nervous system function.Particularly noteworthy is the uncovering of the activation of the proteasome pathway,highlighting significant key contributing proteins.These novel findings provide a new perspective for exploring the molecularmechanism underlying the systemic health effects of PFASs and offer reliable screening for potential biomarkers.Additionally,comparisons with serum confirmed the potential of serum EVs as biological responders and measurable endpoints for evaluating PFASs-induced toxicity. 展开更多
关键词 Per-and polyfluoroalkyl substances Extracellular vesicles Health effects PROTEOMICS PROTEASOME
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Coupling Effects and Resonant Characteristics of Rotating Composite Thin-Walled Beams in Hygrothermal Environments
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作者 Ling Yuan Liang Li +3 位作者 Weidong Zhu Long Wang Xiaoyu Lu Yinghui Li 《Acta Mechanica Solida Sinica》 2025年第1期91-99,共9页
This study focuses on coupled vibrations of rotating thin-walled composite beams subjected to hygrothermal effects.In the existing literature,many studies have been conducted on coupled bending-torsional vibration and... This study focuses on coupled vibrations of rotating thin-walled composite beams subjected to hygrothermal effects.In the existing literature,many studies have been conducted on coupled bending-torsional vibration and resonance in hygrothermal environments.Few studies considered the coupled flapwise-edgewise and resonances of composite thin-walled beams.Considering this,the flapwise-edgewise coupling effects and resonant characteristics of rotating thin-walled composite beams in a hygrothermal environment are studied.The Rayleigh–Ritz method is used to solve the equations of the beam.Results indicate that flapwise-edgewise coupling factors are essential for the vibration analysis of rectangular thin-walled beams.The ply angle and setting angle strongly affect the internal and external resonances.Large ply angles can significantly reduce the chances of primary internal and external resonances occurring when the permitted rotational speed is lower. 展开更多
关键词 Flapwise-edgewise coupling Hygrothermal effects Ply angle Rotational speed RESONANCE
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Heat treatment effects on Mg-Zn-Ag-xCa alloys:a study on corrosion resistance and antimicrobial activity in simulated physiological conditions
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作者 Xin-He Wu Quan-Tong Jiang +4 位作者 Ya-Hui Geng Dong-Zhu Lu Na-Zhen Liu Ji-Zhou Duan Bao-Rong Hou 《Rare Metals》 2025年第5期3428-3446,共19页
This study aims to investigate the effects of heat treatment on the corrosion resistance and antimicrobial activity of Mg-Zn-Ag-xCa alloys under simulated physiological conditions.The focus of this research is to unde... This study aims to investigate the effects of heat treatment on the corrosion resistance and antimicrobial activity of Mg-Zn-Ag-xCa alloys under simulated physiological conditions.The focus of this research is to understand how to optimize the biomedical performance of the alloy by adjusting its composition,particularly its stability in simulated body fluids and its ability to counteract microbes.The corrosion behavior and antibacterial properties of silver-containing magnesium alloys with different calcium contents after solution treatment were studied.The results show that the addition of calcium affects the microstructure of the alloy,including grain refinement and the distribution of the second phase.It acts as a barrier at the microscopic scale,which helps to prevent the invasion of the corrosive agent,thereby improving the overall corrosion resistance of the material.The gradual increase in calcium initially has a positive effect on the properties of the alloy,especially in terms of corrosion resistance.However,when the calcium content increases to 1.5Ca,although the initial corrosion potential of the alloy increases,excessive calcium may lead to excessive accumulation of the second phase in the microstructure,which will have a negative impact on the long-term stability and corrosion resistance of the material.After corrosion,when the calcium content is 1.0 wt%,the surface roughness of the sample is 1.65μm,with the surface being the smoothest,and the corrosion rate is 0.25 mm·year-1.However,when the calcium content increases to 1.5 wt%,the sample exhibits the fastest corrosion rate at 0.45 mm·year-1.The antibacterial properties of magnesium alloy were optimized by adding silver. 展开更多
关键词 MICROFORMING Cylindrical compression Size effects Grain orientation Inhomogeneous deformation
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A critical review on the migration,transformation,sampling,analysis and environmental effects of microplastics in the environment
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作者 Wen Jiang Xueting Yan Yi Lv 《Journal of Environmental Sciences》 2025年第8期645-664,共20页
As emerging pollutants,microplastics have recently received considerable attention owing to detection in various organisms and environments.Mass production and widespread use of plastic products increase their potenti... As emerging pollutants,microplastics have recently received considerable attention owing to detection in various organisms and environments.Mass production and widespread use of plastic products increase their potential risks to humans owing to their persistent,mobile,and toxic properties.Numerous methods have been used to identify and quantify the various forms of microplastics,however,unified standards do not exist.In this review,we systematically summarize the sources,migration,transformation,and analytical methods for microplastics in diverse ecosystems,particularly the most recent sampling and identification techniques.Additionally,the environmental effects and health hazards of microplastics on aquatic and terrestrial systems,as well as human beings are discussed.We also present management strategies for reducing microplastics in a broader social and policy context.This review aims to provide an overview of the migration,transformation,sampling,analysis,and environmental effects of microplastics,which addresses knowledge gaps in microplastic pollution and provides proposals for key research gaps. 展开更多
关键词 Microplastics Analytical method Environmental effects TOXICITY Management and proposals
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Lipid metabolism of Acetobacter pasteurianus and its main components with hypoglycemic effects
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作者 Wen-Yan Xu Wen-Ting Zhou +6 位作者 Jia-Zi Luo Yu-Ying Jiang Kai Zhang Shu-Yan Zhang Ping-Sheng Liu Hong-Yu Wei Yan-Qiang Huang 《World Journal of Diabetes》 2025年第6期249-265,共17页
BACKGROUND Probiotic Acetobacter pasteurianus is used to treat diabetes,but its specific hypoglycemic substances and mechanisms remain unclear.AIM To investigate the components for lipid metabolism of A.pasteurianus a... BACKGROUND Probiotic Acetobacter pasteurianus is used to treat diabetes,but its specific hypoglycemic substances and mechanisms remain unclear.AIM To investigate the components for lipid metabolism of A.pasteurianus and its hypoglycemic effects,providing a basis for its broader application.METHODS The lipid metabolism of A.pasteurianus under different growth conditions was analyzed using lipidomics.Neutral lipid staining in A.pasteurianus cells and the formation of lipid droplet-like structures were observed using a confocal laser scanning microscope.The neutral lipid components were also analyzed using thin layer chromato-graphy.A diabetic mouse model was established to evaluate the hypoglycemic effects of the main lipid components of A.pasteurianus and their role in repairing tissues such as the pancreas.RESULTS After comparing the effects of three culture media,namely,brain heart infusion(BHI)medium with 2%glucose,chromium-rich and zinc-rich medium,and mineral salt medium,A.pasteurianus grew well in BHI containing 2%glucose and produced the most lipids.A total of 583 lipid metabolic products was identified,with higher levels of coenzyme Q9(CoQ9),oleic acid(OA),and wax ester,but no triacylglycerol was observed.It was found that the components that affected lipid metabolism in A.pasteurianus were mainly CoQ9 and OA.They exhibited hypoglycemic effects comparable to metformin in diabetic mice,repaired damaged pancreatic tissues,and did not cause damage to the liver and spleen.CONCLUSION Under high-nutrient growth conditions,A.pasteurianus contains abundant lipid components,such as CoQ9 and OA,with good hypoglycemic effects. 展开更多
关键词 Acetobacter pasteurianus Lipid metabolism Neutral lipids Lipid droplets Hypoglycemic effects
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