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The Boundary Element Method for Ordinary state-Based Peridynamics

Computer Modeling in Engineering & sciences 2024年第6期139卷 2807-2834页

作者： Xue Liang Linjuan wang state Key Laboratory for Turbulence and Complex systems Department of Mechanics and Engineering ScienceCollege of EngineeringPeking UniversityBeijing100871China CAPT-HEdPs and IFSA Collaborative Innovation Center of MoECollege of EngineeringPeking UniversityBeijing100871China school of Astronautics Beihang UniversityBeijing100191China

The peridynamics(Pd),as a promising nonlocal continuum mechanics theory,shines in solving d.s.ontinuous *** to now,various numerical methods,such as the peridynamic mesh-free particlemethod(Pd-MPM),peridynamic finite element method(Pd-FEM),and peridynamic boundary element method(Pd-BEM),have been ***-BEM,in particular,outperforms other methods by eliminating spurious boundary softening,efficiently handling infinite problems,and ensuring high computational ***,the existing Pd-BEM is constructed exclusively for bond-based peridynamics(BBPd)with fixed Poisson’s ratio,limiting its applicability to crack propagation problems and.s.enarios involving infinite or semi-infinite *** this paper,we address these limitations by introducing the boundary element method(BEM)for ordinary state-based peridynamics(OsPd-BEM).Additionally,we present a crack propagationmodel embeddedwithin the framework ofOsPd-BEM to simulate crack *** validate the effectiveness of OsPd-BEM,we conduct four numerical examples:deformation under uniaxial loading,crack initiation in a double-notched.s.ecimen,wedge-splitting test,and threepoint bending *** results demonstrate the accuracy and efficiency of OsPd-BEM,highlighting its capability to successfully eliminate spurious boundary softening phenomena under varying Poisson’s ***,OsPdBEMsignificantly reduces computational time and exhibits greater consistencywith experimental results compared to Pd-MPM.

关键词： Ordinary state-based peridynamics boundary element method crack propagation fracture toughness

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One-neutron stripping process in the^(209)Bi(^(6)Li,^(5)Li)^(210)Bi*reaction reaction

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Nuclear science and Techniques 2024年第6期35卷 120-129页

作者： Gao-Long Zhang Zhen-Wei Jiao Guang-Xin Zhang E.N.Cardozo B.Paes shi-Peng Hu Jian-Qiang Qian daniele Mengoni Wei-Wei Qu Cong-Bo Li Yun Zheng Huan-Qiao Zhang Hui-Bin sun Nan wang Chun-Lei Zhang J.J.Valiente-dobón d.Testov M.Mazzocco A.Gozzelino C.Parascandolo d.Pierroutsakou M.La Commara A.Goasduff d.Bazzacco d.R.Napoli F.Galtarossa F.Recchia A.Illana s.Bakes I.Zanon s.Aydin Gde Angelis M.siciliano R.Menegazzo s.M.Lenzi s.Akkoyun L.F.Canto J.Lubian school of Physics Beihang UniversityBeijing 100191China sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340 NiteróiRio de JaneiroBrazil Laboratorio TANdAR Comisión Nacional de Energía AtómicaBKNA1650 San MartíınArgentina Institute for Advanced.s.udy in Nuclear Energy and.s.fety Shenzhen UniversityShenzhen 518060China shenzhen Key Laboratory of Research and Manufacture of High Purity Germanium Materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPaduaItaly dipartimento di fisica Astronomia dell’Universita di padova PaduaItaly state Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Laboratori Nazionali di Legnaro INFN35020 LegnaroItaly INFN Sezione di Napoli80126 NaplesItaly dipartimento di Farmacia Universitàdi Napoli“Federico II”80131 NaplesItaly department of Natural and Mathematical sciences Faculty of EngineeringTarsus University33480 MersinTurkey Physics division Argonne National LaboratoryLemontILUSA department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroRio de Janeiro CP 6852821941-972Brazil

One-neutron stripping process between^(6)Li and^(209)Bi was studied at 28,30,and 34 MeV using the in-beamγ-ray spectroscopy ***γ-γcoincident analysis clearly identified twoγ-rays feeding the ground and long-lived isomeric states,which were employed to determine the cross *** one-neutron stripping cross sections were similar to the cross sections of complete fusion in the^(6)Li+^(209)Bi system,but the one-neutron stripping cross sections decreased more gradually at the sub-barrier region.A coupled-reaction-channel calculation was performed to study the detailed reaction mechanism of the one-neutron stripping process in^(6)*** calculations indicated that the first excited.s.ate of 5 Li is critical in the actual one-neutron transfer mechanism,and the valence proton of 209Bi can be excited to the low-lying excited.s.ate in(^(6)Li,^(5)Li)reaction,unlike in the(d,p)reaction.

关键词： Transfer reaction Weakly bound nuclei Cross section

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single-particle spectroscopies of p-wave and d-wave interacting Bose gases in normal phase

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Communications in Theoretical Physics 2024年第5期76卷 140-147页

作者： Zeqing wang Ran Qi department of Physics Renmin University of ChinaBeijing 100872China

Motivated by experiments with interacting quantum gases across high partial wave resonance,we investigate the thermodynamic properties and.s.ngle-particle spectra of Bose gases in normal phase for different interaction strengths for both p-and d-wave *** equation of state,contact density,momentum d.s.ributions and.s.lf-energies of single-particle Green’s functions are obtained in the spirit of ladder diagram *** radio-frequency(RF)spectrum,as an important experimental approach for detecting Feshbach molecules or the interaction effect,is calculated at different temperatures.A reversed temperature dependence on the Bose–Einstein condensation side and Bardeen–Cooper–schrieffer side is identified for both p-and d-wave *** estimate for the signal of RF spectra under typical experimental conditions is also provided.

关键词： quantum gases ultracold atom high partial wave RF spectra

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Effects of Lycium barbarum polysaccharide on cytokines in adolescents with subthreshold depression:a randomized controlled.s.udy

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Neural Regeneration Research 2024年第9期19卷 2036-2040页

作者： Xiaoyue Li Tao Liu Xuan Mo Runhua wang Xueyan Kong Robin shao Roger s.Mclntyre Kwok-Fai so Kangguang Lin department of Affective d.s.rders The Affiliated Brain Hospital of Guangzhou Medical University(Guangzhou Huiai Hospital)GuangzhouGuangdong ProvinceChina Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina department of Psychiatry The Fifth Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Mood d.s.rders Psychopharmacology Unit Poul Hansen Family Centre for DepressionUniversity Health NetworkTorontoONCanada department of Psychiatry University of TorontoTorontoONCanada Brain and Cognition d.s.overy Foundation TorontoCanada Ministry of Education Joint International Research Laboratory of CNs Regeneration Jinan UniversityGuangzhouGuangdong ProvinceChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

strong evidence has accumulated to show a correlation between depression symptoms and inflammatory ***,anti-inflammatory treatment has shown partial effectiveness in alleviating depression *** barbarum polysaccharide(LBP),derived from Goji berries,exhibits notable antioxidative and anti-inflammatory *** our recent double-blinded randomized placebo-controlled trial,we found that LBP significantly reduced depressive symptoms in adolescents with subthreshold *** is presumed that the antidepressant effect of LBP may be associated with its influence on inflammatory *** the double-blinded randomized controlled trial,we enrolled 29 adolescents with subthreshold depression and randomly divided them into an LBP group and a placebo *** the LBP group,adolescents were given 300 mg/d LBP.A 6-week follow up was completed by 24 adolescents,comprising 14 adolescents from the LBP group(15.36±2.06 years,3 men and 11 women)and 10 adolescents from the placebo group(14.9±1.6 years,2 men and 8 women).Our results showed that after 6 weeks of treatment,the interleukin-17A level in the LBP group was lower than that in the placebo *** analysis showed that LBP reduced the correlations and connectivity between inflammatory factors,which were associated with the improvement in depressive *** findings suggest that 6-week administration of LBP suppresses the immune response by reducing interleukin-17A level,thereby exerting an antidepressant effect.

关键词： adolescents cytokines efficacy Goji berry inflammatory responses interleukin-17A Lycium barbarum polysaccharide randomized controlled.s.udy subthreshold depression

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Global hybrid.s.mulations of soft X-ray emissions in the Earth’s magnetosheath

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Earth and Planetary Physics 2024年第1期8卷 47-58页

作者： Jin Guo TianRan sun san Lu QuanMing Lu Yu Lin XueYi wang Chi wang Rongsheng wang Kai Huang school of Earth and.s.ace sciences University of Science and Technology of ChinaHefei 230026China CAs Center for Excellence in Comparative Planetology/CAs Key Lab of Geospace Environment University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical science and Technology Harbin 150001China National space science Center Chinese Academy of SciencesBeijing 100190China Physics department Auburn UniversityAuburnALUSA

Earth’s magnetopause is a thin boundary separating the shocked.s.lar wind plasma from the magnetospheric plasmas,and it is also the boundary of the solar wind energy transport to the *** X-ray imaging allows investigation of the large-scale magnetopause by providing a two-dimensional(2-d)global view from a *** performing 3-d global hybrid-particle-in-cell(hybrid-PIC)simulations,we obtain soft X-ray images of Earth’s magnetopause under different solar wind conditions,such as different plasma densities and directions of the southward interplanetary magnetic *** all cases,magnetic reconnection occurs at low latitude *** soft X-ray images observed by a hypothetical satellite are shown,with all of the following identified:the boundary of the magnetopause,the cusps,and the *** X-ray emissivity in the magnetosheath is characterized by large amplitude fluctuations(up to 160%);however,the maximum line-of-sight-integrated X-ray intensity matches the tangent directions of the magnetopause well,indicating that these fluctuations have limited impact on identifying the magnetopause boundary in the X-ray ***,the magnetopause boundary can be identified using multiple viewing *** also find that solar wind conditions have little effect on the magnetopause *** solar wind Magnetosphere Ionosphere Link Explorer(sMILE)mission will provide X-ray images of the magnetopause for the first time,and our global hybrid-PIC simulation results can help better understand the 2-d X-ray images of the magnetopause from a 3-d perspective,with particle kinetic effects considered.

关键词： magnetopause X-ray emissivity X-ray imaging sMILE global hybrid-PIC simulation

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Carbon steel anticorrosion performance and mechanism of sodium lignosulfonate

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Rare Metals 2024年第1期43卷 356-365页

作者： Bo-Kai Liao Rui-Xuan Quan Ping-Xian Feng Huan wang Wei wang Li Niu school of Chemistry and Chemical Engineering Guangzhou Key Laboratory of Sensing Materials and DevicesJoint Institute of Guangzhou University and Institute of Corrosion Science and TechnologyGuangzhou UniversityGuangzhou 510006China

Lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups. It has excellent ionic complexation ability and amphiphilic molecular structure *** this study, the carbon steel anticorrosion performance of sodium lignosulfonate(sLs) in an acid.s.lution was evaluated using the weight loss method, electrochemical measurements, scanning vibration electrode technique(sVET), and.s.rface characterization methods. sLs exhibited excellent corrosion inhibition efficiency for Q235carbon steel in 1 mol·L^(-1) HCl, reaching a maximum value of 98%. A low sLs concentration of 20 mg·L^(-1) resulted in the maximum corrosion inhibition efficiency, which remained nearly constant at higher sLs *** sVET test demonstrated that the formation of an sLs adsorption film can impede corrosion. This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials.

关键词： Lignin sodium lignosulfonate Corrosion inhibitor Carbon steel

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Paleoenvironmental Characteristics of Paleogene Lacustrine source Rocks in the Western Bozhong sag,Bohai Bay Basin,China:Evidence from Biomarkers,Major and Trace Elements

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Acta Geologica sinica(English Edition) 2024年第1期98卷 220-240页

作者： wang Xiang LIU Guangdi sONG Zezhang sUN Mingliang wang Xiaolin wang Feilong CHEN Rongtao GENG Mingyang LI Yishu state Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China College of Geosciences China University of PetroleumBeijing 102249China China National Offshore Oil Co. Ltd.(CNOOC)Tianjin Branch CompanyTianjin 300459China CNOOC Research Institute Beijing 100028China

The organic matter(OM)enrichment mechanisms and depositional environment characteristics of lacustrine source rocks in the western Bozhong sag,Bohai Bay Basin in Northeast China remain *** address these issues,based on Rock-Eval pyrolysis,kerogen macerals,H/C and O/C ratios,GC-Ms,major and trace elements,the dongying Formation Member(Mbr)3(E_(3)d_(3)),the shahejie Formation mbrs 1 and 2(E_(2)s_(1+2)),and the shahejie Mbr 3(E_(2)s_(3))source rocks in the western Bozhong sag were *** above methods were used to reveal their geochemical properties,OM origins and depositional environments,all of which indicate that E_(2)s_(1+2)and E_(2)s_(3)are excellent source rocks,and that E_(3)d_(3)is of the second good quality.E_(3)d_(3)source rocks were formed under a warm and humid climate,mainly belong to fluvial/delta facies,the E_(3)d_(3)sediments formed under weakly oxidizing and freshwater ***,the depositional environments of E_(2)s_(1+2)source rocks were arid and cold climate,representing saline or freshwater lacustrine facies,and the sediments of E_(2)s_(1+2)belong to anoxic or suboxic settings with large evaporation and *** the period of E_(2)s_(3),the climate became warm and humid,indicating the freshwater lacustrine facies,and E_(2)s_(3)was characterized by freshwater and abundant ***,compared with other intervals,the OM origin of E_(3)d_(3)source rocks has noticeable terrestrial *** OM origin of the E_(2)s_(1+2)and E_(2)s_(3)are mainly plankton and *** subsidence and climate change have affected the changes of the depositional environment in the western Bozhong sag,thus controlling the d.s.ribution of the source rocks,the geochemical characteristics in the three intervals of lacustrine source rocks have d.s.inct ***,these factors are effective to evaluate the paleoenvironmental characteristics of source rocks by biomarkers,major and trace *** established models

关键词： petroleum geology source rocks depositional environments biomarkers major elements trace elements Bozhong sag

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Metal-based inorganic nanocrystals for biological sonodynamic therapy applications:recent progress and perspectives

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Rare Metals 2024年第2期43卷 413-430页

作者： dong wang Jia-Tao Zhang Institute of Medical-Ind.s.rial Integration Beijing Key Laboratory of Structurally Controllable Advanced Functional Materials and Green ApplicationsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China Key Laboratory of Medical Molecule science and Pharmaceutics Engineering Ministry of Industry and Information TechnologySchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing100081China

With the fast development of technology for the treatment of tumor and bacteria,photo-therapeutic strate-gies emerge as a kind of highly effective and common treatment,but the low tissue penetration depth of light limits their *** therapy(sdT),as an efficient and non-invasive treatment,attracts more people's attention due to the inherent property of high tissue *** soft tissue penetration depth of ultrasound(Us)can even reach more than 10 cm,which has great advantage over that of ***,many sonosensitizers are studied and applied to sdT-based ***-based inorganic nanocrystals are able to generate more reactive oxygen species(ROs)due to the special composition and band *** representative achievements and the specific functions of the nanocrystals sonosensitizers are summarized in this work,and the relationship of structure/composition-sdT performance and the internally regulated composite is ***-gistic effects of sdT in combination with other therapeutic modalities are mainly *** the same time,the critical and potential issues and future perspectives are addressed.

关键词： Metal-based inorganic nanocrystals sonodynamic therapy(sdT) Tumor treatment Antibacteria

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Efficient overall photosynthesis of H_(2)O_(2) by the BTz@Mn_(0.2)Cd_(0.8)s s-scheme heterojunction

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science China Chemistry 2024年第6期67卷 1953-1960页

作者： Zhongyue Chen sijie Wan Bei Cheng wang wang Yao Xiang Jiaguo Yu shaowen Cao state Key Laboratory of Advanced Technology for Materials synthesis and Processing Wuhan University of TechnologyWuhan430070China Hubei Technology Innovation Center for Advanced Composites Wuhan University of TechnologyWuhan430070China Hospital of Wuhan University of Technology Wuhan University of TechnologyWuhan430070China Laboratory of solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan430074China

The photosynthesis of hydrogen peroxide(H_(2)O_(2))through the selective 2e^(-)oxygen reduction reaction(ORR)from O_(2)and H_(2)O stands out as an environmentally sustainable and cost-effective method for generating this essential ***,the wid.s.read application of most photocatalysts is impeded by their reliance on sacrificial *** this context,we present a noteworthy advancement in the form of a step-scheme(s-scheme)heterojunction involving a donor-acceptor(d-A)-conjugated polymer and manganese cadmium sulfide(BTz@MCs).This innovative configuration enables efficient photocatalytic H_(2)O_(2)production within a non-sacrificial system,showcasing an impressive H_(2)O_(2)yield of 5,368μmol g^(-1)h^(-1)and an apparent quantum yield of 4.5%at 420 *** insights gained from in-situ irradiated X-ray photoelectron spectroscopy(IsIXPs),in-situ diffuse reflectance infrared Fourier transformations spectroscopy(dRIFTs),and density function calculations(dFT),it is revealed that the sp^(2)C between thiazole-thiazole rings at the BTz and the concentrated holes at the MCs function as spatially separated redox *** centers catalyze the selective 2e^(-)ORR and 4e^(-)water oxidation reaction(WOR)*** O_(2)generated from the WOR is subsequently utilized by the ORR cycle,enabling the overall photosynthesis of H_(2)O_(2)with accelerated total reaction ***,the high photocatalytic performance of the developed catalyst is attributed to well-d.s.gned.s.scheme heterojunctions with tuned band *** spatially separated redox centers and effective transfer of photogenerated charge carriers facilitated by the internal electric field.s.gnificantly enhance reaction *** study introduces a promising avenue for photocatalytic H_(2)O_(2)production without sacrificial agents,providing valuable insights into the underlying mechanisms in s-scheme heterojunctions.

关键词： hydrogen peroxide non-sacrificial redox centers s-scheme heterojunction

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dry environment on the expression of lacrimal gland.s.00A9,Anxa1,and Clu in rats via proteomics

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International Journal of Ophthalmology(English edition) 2024年第3期17卷 435-443页

作者： Yi-Lin sun A-Yuan Cui Li-Xin wang wang-wang Zhang Hong shi College of Traditional Chinese Medicine Xinjiang Medical UniversityUrumqi 830011Xinjiang Uygur Autonomous RegionChina Research on High Incidence of d.s.ases in Xinjiang Region Key Laboratory of the Ministry of Education(Xinjiang Medical University)Urumqi 830011Xinjiang Uygur Autonomous RegionChina

●AIM:To investigate the underlying mechanism of dry environment(autumn dryness)affecting the lacrimal glands in rats.●METHOds:Twenty sprague-dawley rats were randomly divided into two *** rats were fed in specific pathogen free environment as the control group(n=10),and the rats fed in dry environment as the dryness group(n=10).After 24d,lacrimal glands were collected from the *** tissues morphology was observed by hematoxylineosin(HE)*** mass tags(TMT)quantitative proteomics analysis technology was used to screen the differential expressed proteins of lacrimal glands between the two groups,then bioinformatics analysis was ***,the immunohistochemical(IHC)method was used to verify the target proteins.●REsULTs:In dryness group,the lacrimal glands lobule atrophied,the glandular cavities enlarged,the sparse nuclear d.s.ribution and.s.attered inflammatory infiltration between the acinus were *** proteomics exhibited that a total of 195 up-regulated and 236 downregulated differential expressed proteins screened from the lacrimal glands of *** was indicated that the biological processes(BP)of differential expressed proteins mainly included cell processes and.s.ngle *** cellular compositions of differential expressed proteins mainly located in cells,*** molecular functions of differential expressed proteins mainly included binding,catalytic ***,the Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis showed that the differential expressed proteins mainly involved lysosome,complement and coagulation cascade,and ribosome *** IHC result verified that the up-regulated expression proteins of Protein s100A9(s100A9),Annexin A1(Anxa1),and Clusterin(Clu)in lacrimal glands of rats in dryness group were higher than control group.●CONCLUsION:The up-regulated expression proteins of s100A9,Anxa1,and Clu may be the potential mechanisms of dry eye symptoms caused by dry *** study pr

关键词： dry eye lacrimal gland s100A9 Clu Anxa1 environment rats

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