检索结果-南通市图书馆

On the apparent line-of-sight alignment of the peak X-ray intensity of the magnetosheath and the tangent to the magnetopause,as viewed by SMILE-SXI

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2024年第1期8卷 155-172页

作者： andrew Read Department of Physics&Astronomy University of LeicesterLeicesterLE17RHUK

the Soft X-ray Imager(SXI)on board the Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)spacecraft will be able to view the Earth’s magnetosheath in soft *** images of the X-ray emission visible from the position of SMILE are created for a range of solar wind densities by using 3 years of the SMILE mission orbit,together with models of the expected X-ray emissivity from the Earth’s *** from global magnetohydrodynamic simulations and a simple model for exospheric neutral densities are used to compare the locations of the lines of sight along which integrated soft X-ray intensities peak with the lines of sight lying tangent to surfaces(defined here to be the magnetopause)along which local soft X-ray intensities peak or exhibit their strongest gradients,or both,for strongly southward interplanetary magnetic field conditions when no depletion or low-latitude boundary layers are ***,in the parameter space of the various times and seasons,orbital phases,solar wind conditions,and magnetopause models,the alignment of the X-ray emission peak with the magnetopause tangent is good,or is not,is *** main results are as *** spacecraft needs to be positioned well outside the magnetopause;low-altitude times near perigee are not *** addition,there are seasonal aspects:dayside-apogee orbits are generally very good because the spacecraft travels out sunward at high altitude,but nightside-apogee orbits,behind the Earth,are bad because the spacecraft only rarely leaves the ***-apogee and dawnapogee orbits are ***-apogee orbits worsen slightly over the first three mission years,whereas nightside-apogee orbits improve ***,many more times of good agreement with the peak-to-tangent hypothesis occur when the solar wind is in a high-density state,as opposed to a low-density *** a high-density state,the magnetopause is compressed,and the spacecraft is more often a good d

关键词： X-rays magnetosphere magnetosheath magnetopause Solar wind Magnetosphere Ionosphere Link Explorer(SMILE) Earth solar wind charge exchange

Editorial for Multiscale&Multifield Coupling in Geomechanics

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 1919-1921页

作者： Min Wang Pengzhi Pan andrew H.C.Chan Y.t.Feng t-3 Fluid Dynamics and Solid Mechanics Theoretical DivisionLos Alamos National LaboratoryNew MexicoUSA Institute of Rock and Soil Mechanics Chinese Academy of SciencesWuhanChina School of Engineering University of TasmaniaTasmaniaAustralia College of Engineering Swansea UniversityWalesUK

We are delighted to serve as guest editors for this special issue in the Journal of Rock Mechanics and Geotechnical *** purpose of this special issue is dedicated to gathering the latest research work on Multiscale&Multifield Coupling in Geomechanics,where we delve into the intricate interplay of various fields and scales that govern the behavior of *** total,30 manuscripts from USA,China,UK,Germany,Canada,India and United Arab Emirates are selected to be included in this issue.

关键词： materials. gathering mechanics

Remodeling tumor Immune Microenvironment by Using Polymer-Lipid-Manganese Dioxide Nanoparticles with Radiation therapy to Boost Immune Response of Castration-Resistant Prostate Cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2024年第3期2023卷 83-96页

作者： Abdulmottaleb E.Zetrini HoYin Lip Azhar Z.Abbasi Ibrahim Alradwan taksim Ahmed Chunsheng He Jeffrey t.Henderson andrew M.Rauth Xiao Yu Wu Advanced Pharmaceutics and Drug Delivery Laboratory Leslie Dan Faculty of PharmacyUniversity of TorontoM5S 3M2TorontoONCanada. Departments of Medical Biophysics and Radiation Oncology University of TorontoM5G 1L7TorontoONCanada.

Despite substantial progress in the treatment of castration-resistant prostate cancer (CRPC), including radiation therapy and immunotherapy alone or in combination, the response to treatment remains poor due to the hypoxic and immunosuppressive nature of the tumor microenvironment. Herein, we exploited the bioreactivity of novel polymer–lipid manganese dioxide nanoparticles (PLMDs) to remodel the tumor immune microenvironment (tIME) by increasing the local oxygen levels and extracellular pH and enhancing radiation-induced immunogenic cell death. this study demonstrated that PLMD treatment sensitized hypoxic human and murine CRPC cells to radiation, significantly increasing radiation-induced DNA double-strand breaks and ultimately cell death, which enhanced the secretion of damage-associated molecular patterns, attributable to the induction of autophagy and endoplasmic reticulum stress. Reoxygenation via PLMDs also polarized hypoxic murine RAW264.7 macrophages toward the M1 phenotype, enhancing tumor necrosis factor alpha release, and thus reducing the viability of murine CRPC tRAMP-C2 cells. In a syngeneic tRAMP-C2 tumor model, intravenous injection of PLMDs suppressed, while radiation alone enhanced recruitment of regulatory t cells and myeloid-derived suppressor cells. Pretreatment with PLMDs followed by radiation down-regulated programmed death-ligand 1 and promoted the infiltration of antitumor CD8+ t cells and M1 macrophages to tumor sites. taken together, tIME modulation by PLMDs plus radiation profoundly delayed tumor growth and prolonged median survival compared with radiation alone. these results suggest that PLMDs plus radiation is a promising treatment modality for improving therapeutic efficacy in radioresistant and immunosuppressive solid tumors.

关键词： RAW264.7 alone treatment

towards global coverage of gridded parameterization for CLImate GENerator(CLIGEN)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Big Earth Data 2024年第1期8卷 142-165页

作者： andrew t.Fullhart Guillermo E.Ponce-Campos Menberu B.Meles Ryan P.McGehee Haiyan Wei Gerardo Armendariz Shea Burns David C.Goodrich Southwest Watershed Research Center USDA-ARS TucsonAZUSA School of Natural Resources and the Environment University of ArizonaTucsonAZUSA Sustainable Agricultural Water Systems Unit USDA-ARS DavisCAUSA Agricultural and Biosystems Engineering Iowa State UniversityAmesIAUSA

Stochastic weather generators create time series that reproduce key weather dynamics present in long-term *** dataset detailed herein is a large-scale gridded parameterization for CLImate GENerator(CLIGEN)that fills spatial gaps in the coverage of existing regional CLIGEN parameterizations,thereby obtaining near-global availability of combined *** dataset primarily covers countries north of 40°latitude with 0.25°spatial *** CLIGEN parameters were estimated based on 20-year records from four popular global climate *** parameters were statistically downscaled to estimate point-scale values,while point-scale temperature and solar radiation parameters were approximated by direct calculation from high-resolution *** parameter values were used in some cases,such as with wind ***-validation was done to assess the downscaling approach for six precipitation parameters using known point-scale values from ground-based CLIGEN *** parameter values were derived from daily accumulation records at 7,281 stations and high temporal resolution records at 609 *** sensitive parameters,monthly average storm accumulation and maximum 30-minute intensity,were shown have RMSE values of 1.48 mm and 4.67 mm hr^(−1),*** precipitation and the annual number of days with precipitation occurrence were both within 5%of ground-based parameterizations,effectively improving climate data availability.

关键词： Agriculture climate hydrology soil erosion stochastic weather generator

Customized scaffolds for large bone defects using 3D‑printed modular blocks from 2D‑medical images

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bio-Design and Manufacturing 2024年第1期7卷 74-87页

作者： Anil AAcar Evangelos Daskalakis Paulo Bartolo andrew Weightman Glen Cooper Gordon Blunn Bahattin Koc Faculty of Engineering and Natural Sciences Sabanci UniversityIstanbul 34956Türkiye D Bioprinting Laboratory Sabanci University Nanotechnology Research and Application CenterIstanbul 34956Türkiye School of Mechanical Aerospace and Civil EngineeringManchester Institute of BiotechnologyUniversity of ManchesterManchester M139PLUK Singapore Centre for 3D Printing School of Mechanical and Aerospace EngineeringNanyang Technological UniversitySingapore 639798Singapore School of Pharmacy and Biomedical Sciences University of PortsmouthPortsmouth PO12UPUK

Additive manufacturing(AM)has revolutionized the design and manufacturing of patient-specific,three-dimensional(3D),complex porous structures known as scaffolds for tissue engineering *** use of advanced image acquisition techniques,image processing,and computer-aided design methods has enabled the precise design and additive manufacturing of anatomically correct and patient-specific implants and ***,these sophisticated techniques can be timeconsuming,labor-intensive,and ***,the necessary imaging and manufacturing equipment may not be readily available when urgent treatment is needed for trauma *** this study,a novel design and AM methods are proposed for the development of modular and customizable scaffold blocks that can be adapted to fit the bone defect area of a *** modular scaffold blocks can be combined to quickly form any patient-specific scaffold directly from two-dimensional(2D)medical images when the surgeon lacks access to a 3D printer or cannot wait for lengthy 3D imaging,modeling,and 3D printing during *** proposed method begins with developing a bone surface-modeling algorithm that reconstructs a model of the patient’s bone from 2D medical image measurements without the need for expensive 3D medical imaging or *** algorithm can generate both patient-specific and average bone ***,a biomimetic continuous path planning method is developed for the additive manufacturing of scaffolds,allowing porous scaffold blocks with the desired biomechanical properties to be manufactured directly from 2D data or *** algorithms are implemented,and the designed scaffold blocks are 3D printed using an extrusion-based AM *** and instructions are also provided to assist surgeons in assembling scaffold blocks for the self-repair of patient-specific large bone defects.

关键词： Additive manufacturing Modular scaffolds Large bone defect Customized scaffold design Patient-specific scaffolds

Simulation of the SMILE Soft X-ray Imager response to a southward interplanetary magnetic field turning

在线全文

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2024年第1期8卷 39-46页

作者： Andrey Samsonov Graziella Branduardi-Raymont Steven Sembay andrew Read David Sibeck Lutz Rastaetter Mullard Space Science Laboratory University College LondonDorking RH56NTUK Leicester University Leicester LE17RHUK Goddard Space Flight Center National Aeronautics and Space AdministrationGreenbeltMD 20771USA

the Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)Soft X-ray Imager(SXI)will shine a spotlight on magnetopause dynamics during magnetic *** simulate an event with a southward interplanetary magnetic field turning and produce SXI count maps with a 5-minute integration *** making assumptions about the magnetopause shape,we find the magnetopause standoff distance from the count maps and compare it with the one obtained directly from the magnetohydrodynamic(MHD)*** root mean square deviations between the reconstructed and MHD standoff distances do not exceed 0.2 RE(Earth radius)and the maximal difference equals 0.24 RE during the 25-minute interval around the southward turning.

关键词： magnetopause magnetic reconnection solar wind charge exchange southward interplanetary magnetic field numerical modeling Solar wind Magnetosphere Ionosphere Link Explorer(SMILE) Soft X-ray Imager

Aboveground carbon sequestration of Cunninghamia lanceolata forests:Magnitude and drivers

在线全文

学校读者我要写书评

暂无评论

Forest Ecosystems 2024年第1期11卷 32-41页

作者： Chen Wang Shuguang Liu Yu Zhu andrew R.Smith Ying Ning Deming Deng National Engineering Laboratory for Applied technology of Forestry&Ecology in South China Central South University of Forestry and TechnologyChangsha 410004China technology Innovation Center for Ecological Conservation and Restoration in Dongting Lake Basin Ministry of Natural ResourcesChangsha 410007China College of Life Science and technology Central South University of Forestry and TechnologyChangsha 410004China School of Ecology and Environment Hainan UniversityHaikou 570228China School of Natural Sciences Bangor UniversityGwyneddLL572UWUK College of Forestry Central South University of Forestry and TechnologyChangsha 410004China Hunan Prospecting Designing&Research General Institute for Agriculture Forestry&IndustryChangsha 410007China

Understanding the spatial variation,temporal changes,and their underlying driving forces of carbon sequestration in various forests is of great importance for understanding the carbon cycle and carbon management *** carbon density and sequestration in various Cunninghamia lanceolata forests,extensively cultivated for timber production in subtropical China,vary with biodiversity,forest structure,environment,and cultural factors remain poorly explored,presenting a critical knowledge gap for realizing carbon sequestration supply potential through *** on a large-scale database of 449 permanent forest inventory plots,we quantified the spatial-temporal heterogeneity of aboveground carbon densities and carbon accumulation rates in Cunninghamia lanceolate forests in Hunan Province,China,and attributed the contributions of stand structure,environmental,and management factors to the heterogeneity using quantile age-sequence analysis,partial least squares path modeling(PLS-PM),and hot-spot *** results showed lower values of carbon density and sequestration on average,in comparison with other forests in the same climate zone(i.e.,subtropics),with pronounced spatial and temporal ***,quantile regression analysis using carbon accumulation rates along an age sequence showed large differences in carbon sequestration rates among underperformed and outperformed forests(0.50 and 1.80 Mg·ha^(-1)·yr^(-1)).PLS-PM demonstrated that maximum DBH and stand density were the main crucial drivers of aboveground carbon density from young to mature ***,species diversity and geotopographic factors were the significant factors causing the large discrepancy in aboveground carbon density change between low-and high-carbon-bearing *** analysis revealed the importance of culture attributes in shaping the geospatial patterns of carbon *** work highlighted that retaining largesized DBH trees and increasing shade-t

关键词： Carbon density Carbon accumulation rate Forest age Spatial variation Cultural influence

C19MC miRNA-520G induces SP100 antiviral gene transcription and inhibits melanin production in skin cutaneous melanoma

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第1期11卷 60-63页

作者： Goodwin G.Jinesh Marian t.Smallin Nino Mtchedlidze Isha Godwin Marco Napoli Nicole Hackel Manali S.Phadke Avani A.Deshpande Xiaobo Li John H.Lockhart Jaden R.Baldwin Suehelay Acevedo-Acevedo Yifeng Gao Michelle A.Reiser Keiran S.M.Smalley Elsa R.Flores andrew S.Brohl Department of Molecular Oncology H.Lee Moffitt Cancer Center&Research InstituteTampaFL 33612USA Molecular Medicine Program H.Lee Moffitt Cancer Center&Research InstituteTampaFL 33612USA Saveetha Medical College ChennaiTamil Nadu 602105India tumor Biology Department H.Lee Moffitt Cancer Center&Research InstituteTampaFL 33612USA Sarcoma Department H.Lee Moffitt Cancer Center&Research InstituteTampaFL 33612USA

SP100 is an antiviral protein that restricts the productive stage of human papillomavirus(HPV)and multiple other viruses,and viruses in turn block sUMO-1-mediated stabilization of SP100 and promotes its degradation(table S1).Interferon(IFN)signaling could still produce more SP100 through transcription to counteract viruses.1 Viruses also disable the transcriptional up-regulation of SP100 to achieve persistent infection in hosts.

关键词： SP100 melanoma stabilization

Understanding the impact of HIV on mpox transmission in the MSM population: A mathematical modeling study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Disease Modelling 2024年第4期9卷 1117-1137页

作者： andrew Omame Qing Han Sarafa A.Iyaniwura Adeniyi Ebenezer Nicola L.Bragazzi Xiaoying Wang Jude D.Kong Woldegebriel A.Woldegerima Abdus Salam School of Mathematical Sciences Government College UniversityLahorePakistan Laboratory for Industrial and Applied Mathematics(LIAM) Department of Mathematics and StatisticsYork UniversityTorontoOntarioCanada Africa-Canada Artificial Intelligence and Data Innovation Consortium(ACADIC) Canada theoretical Biology and Biophysics Theoretical DivisionLos Alamos National LaboratoryLos AlamosNM87545USA Postgraduate School of Public Health Department of Health Sciences(DISSAL)University of Genoa16126GenoaItaly United Nations Educational Scientific and Cultural Organization(UNESCO)Health Anthropology Biosphere and Healing SystemsUniversity of Genoa16126GenoaItaly Department of Food and Drugs University of Parma43125ParmaItaly Department of Mathematics Trent University PeterboroughOntarioCanada Artificial Intelligence&Mathematical Modeling Lab(AIMM Lab) Dalla Lana School of Public HealthUniversity of Toronto155 College St Room 500TorontoONM5T 3M7Canada Department of Mathematics University of TorontoOntarioCanada Global South Artificial Intelligence for Pandemic and Epidemic Preparedness and Response Network(AI4PEP) Canada Department of Mathematics Federal University of TechnologyOwerriNigeria

the recent mpox outbreak(in 2022e2023)has different clinical and epidemiological features compared with previous outbreaks of the *** this outbreak,sexual contact was believed to be the primary transmission route of the *** addition,the community of men having sex with men(MSM)was disproportionately affected by the *** population is also disproportionately affected by HIV *** that both diseases can be transmitted sexually,the endemicity of HIV,and the high sexual behavior associated with the MSM community,it is essential to understand the effect of the two diseases spreading simultaneously in an MSM ***,we aim to understand the potential effects of HIV on an mpox outbreak in the MSM *** develop a mechanistic mathematical model of HIV and mpox *** model incorporates the dynamics of both diseases and considers HIV treatment with antiretroviral therapy(ARt).In addition,we consider a potential scenario where HIV infection increases susceptibility to mpox,and investigate the potential impact of this mechanism on mpox *** analysis shows that HIV can facilitate the spread of mpox in an MSM population,and that HIV treatment with ARt may not be sufficient to control the spread of mpox in the ***,we showed that a moderate use of condoms or reduction in sexual contact in the population combined with ARt is beneficial in controlling mpox *** on our analysis,it is evident that effective control of HIV,specifically through substantial ARt use,moderate condom compliance,and reduction in sexual contact,is imperative for curtailing the transmission of mpox in an MSM population and mitigating the compounding impact of these intertwined epidemics.

关键词： HIV-mpox co-infection Infectious disease modeling Invasion reproduction number Control reproduction number sensitivity analysis MSM