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Stability Switches of a Double-delayed Mussel-algae System

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Acta Mathematicae Applicatae Sinica 2024年

作者： Zhi-chao JIANG Jing-hua HE Bo-hai chen School of Liberal Arts and Sciences North China Institute of Aerospace Engineering

The stable switching phenomenon of a diffusion mussel-algae system with two delays and half saturation constant is studied. The stability of positive equilibrium and the existence of Hopf bifurcation on two-delay plane are investigated by calculating the stability switching curves. The normal form on the central manifold near Hopf bifurcation point is also derived. It can find that two different delays can induce the stable switches which cannot occur with the same delays. Through numerical simulations, the region of complete stability of system increases with the increase of half-saturation constant, indicating that the half-saturation constant contributes to the stability of system. In addition, double Hopf bifurcations may occur due to the intersection of bifurcation curves. These results show that two different delay and half-saturation constant have important effects on the system. The numerical simulation results validate the correctness of the theoretical analyses.

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Structural and functional design of geopolymer adsorbents:a review

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Tungsten 2024年第1期6卷 48-76页

作者： hai-Ze Jin chen-Xi Qiu Yan-Song Li Bao Liu Jun-Yi Liu Qiao chen Xue-Feng Lu Cui-Xia Li Qi-Kun Wang School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals Lanzhou 730050China Shenyang Nonferrous Metals Research Institute Co. LTDShenyang 110000China Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403China

The water pollution derived from the discharge of heavy metals,antibiotics,dyes and surfactants wastewater,*** seriously affected human survival and ecological *** an efficient and low-cost physical wastewater treatment process,the adsorption is a continuous hot spot in related scientific research and *** are non-crystal or semi-crystalline materials with high-efficiency adsorption performance due to the alkali metal ions that balance the electronegative aluminosilicate skeleton can be efficiently replaced by other cations in the aqueous *** related studies of different application conditions,service objects and morphological differences of geopolymer adsorbents based on structure-function design have been in-depth exploration and *** review aims to summarize the research progres s of the structure-function design based on the geopolymerization mechanism and kinetics and service *** overview of service characteristics and progress of geopolymers in the wastewater treatment field(e.g.,dyes,heavy metals,radionuclides,surfactants,antibiotics,ammonium,phosphorus,nitrogen and CO_(2),etc.)are systematically *** the evolution and development of morphological differences and the relationship of structure-function design of geopolymer adsorbents were compared and ***,the challenge worth overcoming,the trends worth considering and perspectives worth developing are highlighted.

关键词： Geopolymer Wastewater Adsorption Structure-function design Application

Synergy of inside doped metals–Outside coated graphene to enhance hydrogen storage in magnesium-based alloys

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Journal of Magnesium and Alloys 2024年第6期12卷 2462-2471页

作者： Kun Zhang Yu Chang Jingjing Lei Jing chen Tingzhi Si Xiaoli Ding Ping Cui hai-Wen Li Qingan Zhang Yongtao Li School of Materials Science and Engineering&Low-Carbon New Materials Research Center Anhui University of TechnologyMaanshanAnhui 243002China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing100084 Hefei General Machinery Research Institute HefeiAnhui 230031China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of TechnologyMaanshan 243002China

Grain growth of magnesium(Mg)and its hydride is one of the main reasons for kinetic and capacity degradation during the hydrogen absorption and desorption *** solve this problem,herein we propose a novel method involving synergistic effect of inside embedded metals and outside coated graphene to limit the growth of Mg and its hydride *** graphene coated Mg-Y-Al alloys were selected as a model system for demonstrating this positive effect where the Mg_(91)Y_(3)Al_(6)alloy was first prepared by rapidly solidified method and then high-pressure milled with 5 wt%graphene upon 5 MPa hydrogen gas for obtaining in-situ formed YAl_(2)and YH_(3)embedded in the MgH_(2)matrix with graphene shell(denoted as MgH_(2)-Y-Al@GR).In comparison to pure MgH_(2),the obtained MgH_(2)-Y-Al@GR composites deliver much better kinetics and more stable cyclic *** instance,the MgH_(2)-Y-Al@GR can release about 6.1 wt%H_(2)within 30 min at 300℃ but pure MgH_(2)only desorbs∼1.5 wt%H_(2).The activation energy for desorption of MgH_(2)-Y-Al@GR samples is calculated to be 75.3±9.1 kJ/mol that is much lower than approximately 160 kJ/mol for pure MgH_(2).Moreover,its capacity retention is promoted from∼57%of pure MgH_(2)to∼84%after 50th cycles without obvious particle agglomeration and grain *** synergistic effect of outside graphene coating with inside embedded metals which could provide a huge number of active sites for catalysis as well as inhibit the grain growth of Mg and its hydride is believed to be responsible for these.

关键词： Energy Hydrogen storage Mg alloys Synergy effect

Cross-sectional network analysis of plasma proteins/metabolites correlated with pathogenesis and therapeutic response in acute promyelocytic leukemia

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Frontiers of Medicine 2024年第2期18卷 327-343页

作者： Niu Qiao Yizhu Lyu Feng Liu Yuliang Zhang Xiaolin Ma Xiaojing Lin Junyu Wang Yinyin Xie Ruihong Zhang Jing Qiao Hongming Zhu Li chen hai Fang Tong Yin Zhu chen Qiang Tian Saijuan chen Shanghai Institute of Hematology State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200025China Department of Hematology Second Hospital of Dalian Medical UniversityDalian116021China

The treatment of PML/RARA+acute promyelocytic leukemia(APL)with all-trans-retinoic acid and arsenic trioxide(ATRA/ATO)has been recognized as a model for translational medicine *** an altered microenvironment is a general cancer hallmark,how APL blasts shape their plasma composition is poorly ***,we reported a cross-sectional correlation network to interpret multilayered datasets on clinical parameters,proteomes,and metabolomes of paired plasma samples from patients with APL before or after ATRA/ATO induction *** study revealed the two prominent features of the APL plasma,suggesting a possible involvement of APL blasts in modulating plasma *** was characterized by altered secretory protein and metabolite profiles correlating with heightened proliferation and energy consumption in APL blasts,and the other featured APL plasma-enriched proteins or enzymes catalyzing plasma-altered metabolites that were potential trans-regulatory targets of PML/***,results indicated heightened interferon-gamma signaling characterizing a tumor-suppressing function of the immune system at the first hematological complete remission stage,which likely resulted from therapy-induced cell death or senescence and ensuing supraphysiological levels of intracellular ***,our work sheds new light on the pathophysiology and treatment of APL and provides an information-rich reference data cohort for the exploratory and translational study of leukemia microenvironment.

关键词： acute promyelocytic leukemia plasma proteomics plasma metabolomics cross-sectional correlation network pathogenesis treatment

Solidification/Stabilization of Chromium in Red Mud-based Geopolymer

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Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 819-830页

作者：田崇霏 LUO Zhongtao LIU Lei LIU Xiaohai 张美香陈萌 hai Ran School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Renbang Technology Co. Ltd.Luoyang 471700China School of Water Conservancy and Civil Engineering Zhengzhou UniversityZhengzhou 450001China School of Architectural and Civil Engineering Zhongyuan University of TechnologyZhengzhou 450007China

Up to 1.5wt%of Cr(Ⅲ)salts(CrCl_(3),and Cr_(2)O_(3))and Cr(Ⅵ)salts(Na_(2)CrO_(4),and CaCr_(2)O_(7))were incorporated into red mud-based geopolymers,*** solidification/stabilization,compressive strength,and durability of the Cr-containing geopolymers were *** experimental results indicate that the red mud-based geopolymer could effectively solidify/stabilize different types of Cr salts with solidification/stabilization rates of above 99.61%.Geopolymers are environmentally safe when the dosage of CaCr_(2)O_(7)is≤1.0wt%,or the dosage of CrCl_(3),Cr_(2)O_(3),and Na_(2)CrO_(4)is≤1.5wt%,*** effects of Cr salts on the compressive strength varies with the type and content of Cr *** freeze-thaw cycle is more destructive to geopolymer properties than sulfate attack or acid rain *** solidification/stabilization of Cr is mainly attributed to the following reasons:a)The chemical binding of Cr is related to the formation of Cr-containing hydrates(eg,magnesiochromite((Mg,Fe)(Cr,Al)_(2)O_(4)))and doping into N-A-S-H gel and C-A-S-H gel framework;b)The physical effect is related to the encapsulation by the hydration products(e g,N-A-S-H gel and C-A-S-H gel).This study provides a reference for the treatment of hazardous Cr-containing wastes by solid waste-based geopolymers.

关键词： chromium solidification/stabilization geopolymer red mud durability

Persistent greening against drying in northeast Asian semiarid grasslands:Asymmetrical responses of direct and legacy effects to intensified drought

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Advances in Climate Change Research 2024年第1期15卷 9-20页

作者： Yu-Tong MA hai-Shan chen Yao-Ming SONG Bo-Tao ZHOU Shan-Lei SUN Xin-Guan DU Yue SUN Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China School of Atmospheric Sciences Nanjing University of Information Science and TechnologyNanjing 210044China

Despite experiencing a decadal shift towards drought conditions at the end of the 2Oth century,semiarid grasslands in northeast Asia(NEA)exhibited an evident greening trend from 1982 to ***,the mechanism behind this phenomenon remains ***,we analysed the interdecadal changes in vegetation response to drought on the basis of the standardised precipitation evapotranspiration index(SPEI)and Global Inventory Modelling and Mapping Studies LAI4g datasets,with an emphasis on the differences between direct and legacy effects(as measured by resilience),to explore the mechanism of persistent grassland *** revealed that during the post-drought shift period(2000-2020),the sudden decrease in the water content of the intermediate soil layer triggered an intensified vegetation response to ***,although direct effects and resilience were amplified,they exhibited asymmetric *** was stronger than direct effects,and this difference increased with increasing drought(drought recovery)*** combined effects may account for persistent greening against intensified drying in the semiarid grasslands in *** the projected exacerbation of future droughts,this study holds notable importance for comprehending the long-term change dynamics of dryland ecosystems.

关键词： Semiarid grassland Drought decadal shift Direct effect Legacy effect(resilience) Northeast Asia

Enhanced detection of freeze‒thaw induced landslides in Zhidoi county(Tibetan Plateau,China)with Google Earth Engine and image fusion

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Advances in Climate Change Research 2024年第3期15卷 476-489页

作者： Jia-Hui YANG Yan-chen GAO Lang JIA Wen-Juan WANG Qing-Bai WU Francis ZVOMUYA Miles DYCK hai-Long HE College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China State Key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Department of Soil Science University of Manitob1Winnipeg MB R3T 2N2Canada Department of Renewable Resources University of Albert1Edmonton AB T6G 2H1Canad

Freeze‒thaw induced landslides(FTILs)in grasslands on the Tibetan Plateau are a geological disaster leading to soil *** landslides reduce biodiversity and intensify landscape fragmentation,which in turn are strengthen by the persistent climate change and increased anthropogenic ***,conventional techniques for mapping FTILs on a regional scale are impractical due to their labor-intensive,costly,and time-consuming *** study focuses on improving FTILs detection by implementing image fusion-based Google Earth Engine(GEE)and a random forest *** of multiple data sources,including texture features,index features,spectral features,slope,and vertical‒vertical polarization data,allow automatic detection of the spatial distribution characteristics of FTILs in Zhidoi county,which is located within the Qinghai‒Tibet Engineering Corridor(QTEC).We employed statistical techniques to elucidate the mechanisms influencing FTILs *** enhanced method identifies two schemes that achieve high accuracy using a smaller training sample(scheme A:94.1%;scheme D:94.5%)compared to other methods(scheme B:50.0%;scheme C:95.8%).This methodology is effective in generating accurate results using only~10%of the training sample size necessitated by other *** spatial distribution patterns of FTILs generated for 2021 are similar to those obtained using various other training sample sources,with a primary concentration observed along the central region traversed by the *** results highlight the slope as the most crucial feature in the fusion images,accounting for 93%of FTILs occurring on gentle slopes ranging from 0°to 14°.This study provides a theoretical framework and technological reference for the identification,monitoring,prevention and control of FTILs in *** developments hold the potential to benefit the management of grassland ecosystem,reduce economic losses,and promote grassland sustainability.

关键词： Permafrost degradation Random forest Thaw slump Spatial distribution Tibetan Plateau

Polydatin ameliorates hepatic ischemia-reperfusion injury by modulating macrophage polarization

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Hepatobiliary & Pancreatic Diseases International 2024年第1期23卷 25-34页

作者： hai-Li Bao Chuan-Zhi chen Chang-Zhen Ren Ke-Yan Sun Hao Liu Shao-Hua Song Zhi-Ren Fu Department of Organ Transplantation Shanghai Changzheng HospitalNavy Military Medical UniversityShanghai 200003China Department of Surgical Oncology the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Cardiology Shanghai Changzheng HospitalNaval Military Medical UniversityShanghai 200003China Department of General Surgery Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China

Background:Polydatin,a glucoside of resveratrol,has shown protective effects against various ***,little is known about its effect on hepatic ischemia-reperfusion(I/R)*** study aimed to elucidate whether polydatin protects liver against I/R-induced injury and to explore the underlying ***:After gavage feeding polydatin once daily for a week,mice underwent a partial hepatic I/R *** alanine aminotransferase(ALT)/aspartate aminotransferase(AST),hematoxylin-eosin(H&E)and TdT-mediated dUTP nick-end labeling(TUNEL)staining were used to evaluate liver *** severity related to the inflammatory response and reactive oxygen species(ROS)production was also ***,immunofluorescence and Western blotting were used to detect macrophage polarization and the NF-κB signaling pathway in ***:Compared with the I/R group,polydatin pretreatment significantly attenuated I/R-induced liver damage and *** oxidative stress marker(dihydroethidium fluorescence,malondialdehyde,superoxide dismutase and glutathione peroxidase)and I/R related inflammatory cytokines(interleukin1β,interleukin-10 and tumor necrosis factor-α)were significantly suppressed after polydatin *** addition,the result of immunofluorescence indicated that polydatin reduced the polarization of macrophages toward M1 macrophages both in vivo and in *** blotting showed that polydatin inhibited the pro-inflammatory function of RAW264.7 via down-regulating the NF-κB signaling ***:Polydatin protects the liver from I/R injury by remodeling macrophage polarization via NFκB signaling.

关键词： Hepatic ischemia-reperfusion injury Polydatin Macrophage Polarization Inflammation

Exploring the therapeutic potential of Qi Teng Mai Ning recipe in ischemic stroke and vascular cognitive impairment

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Traditional Medicine Research 2024年第10期9卷 21-35页

作者： Jia-Yan Yao Yue-Lan Yang Wei-Jian chen hai-Ying Fan Department of Neurosurgery Changxing People’s HospitalChangxing 313100China Department of Ultrasound Medicine Changxing People’s HospitalChangxing 313100China Department of Orthopedics The Fifth Clinical College of Guangzhou University of Chinese MedicineGuangzhou 510095China

Background:This study aims to explore the therapeutic effects of the Qi Teng Mai Ning recipe on ischemic stroke and vascular cognitive impairment through its potential to modulate cellular autophagy,with a focus on identifying its active ingredients and their target ***:The study began with the identification of active ingredients in the Qi Teng Mai Ning *** proceeded to screen the gene expression omnibus database for ischemic stroke and vascular cognitive impairment-associated differentially expressed mRNAs and to identify cellular autophagy-related proteins via the Human Autophagy *** proteins were annotated with Gene Ontology and Kyoto Encyclopedia of Genes and Genomes functions and subjected to molecular docking with the recipe’s core active *** vitro cell experiments were conducted on hypoxic HT22 cells,involving CCK8 assay,lentiviral transfection to silence autophagy related 9B(ATG9B),immunofluorescence staining,and qPCR validation to investigate the effects of the recipe on ***:The analysis identified 104 active ingredients targeting 408 proteins and forming a complex ingredient-target *** 55 ischemic stroke-related and 909 vascular cognitive impairment-related differentially expressed mRNAs revealed 14 co-expressed *** docking showed quercetin,kaempferol,myrcene,and conferone as key ingredients targeting autophagy-related *** experiments indicated that the recipe significantly enhanced cell viability under hypoxic conditions,reduced apoptosis,and modulated the expression of autophagy-related factors,thereby decreasing apoptosis rates in HT22 ***:The Qi Teng Mai Ning recipe offers protective effects against ischemic stroke and vascular cognitive impairment by modulating autophagy-related *** efficacy highlights the potential of traditional Chinese medicine in treating these conditions,though further research is needed to fully understand its

关键词： Qi Teng Mai Ning recipe autophagy ischemic stroke vascular cognitive impairment traditional Chinese medicine