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Research in Astronomy and Astrophysics 2023年第11期23卷 1-6页

作者： Surjit S.Wadhwa Jelena Petrović Nick f.H.Tothill Ain Y.De Horta Miroslav D.filipović Gojko Djurašević School of Science Western Sydney UniversityLocked Bag 1797PenrithNSW 2751Australia Astronomical Observatory Volgina 711060 BelgradeSerbia

The study reports photometric and spectroscopic observations of two recently recognized contact binary *** systems show total eclipses and analysis of the light curves indicates both have very low mass ratios of less than *** derive absolute parameters from color and distance based calibrations and show that,although both have low mass ratios,they are likely to be in a stable orbit and unlikely to *** other respects,both systems have characteristics similar to other contact binaries with the secondary larger and brighter than their main sequence counterparts and we also find that the secondary is considerably denser than the primary in both systems.

关键词： (stars:)binaries:eclipsing stars:mass-loss techniques:photometric

Leaf temperature of soybean grown under elevated CO2 increases Aphis glycines （Hemiptera＂ Aphididae） population growth

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Insect Science 2011年第4期18卷 419-425页

作者： Bridget f. O'Neill Arthur R. Zangerl Evan H. DeLucia Clare Casteel Jorge A. Zavala May R. Berenbaum Departments ofEntomology University of Illinois Urbana-Champaign Urbana Illinois USA Departments of Plant Biology University of Illinois Urbana-Champaign Urbana Illinois USA Departments of Institute of Genomic Biology University of Illinois Urbana-Champaign Urbana Illinois USA Consejo Nacional de InvesUgaciones Cientificas y Technicas Catedra de Bioquimica Facultad de Agronomia University of Buenos Aires Pontificia Universidad Catolica Argentina Buenos Aires Argentina

Plants grown under elevated carbon dioxide （CO2） experience physiological changes that influence their suitability as food for insects. To determine the effects of living on soybean （Glycine max Linnaeus） grown under elevated CO2, population growth of the soybean aphid （Aphis glycines Matsumura） was determined at the SoyfACE research site at the University of Illinois, Urbana-Champaign, Illinois, USA, grown under elevated （550μL/L） and ambient （370 μL/L） levels of CO2. Growth of aphid populations under elevated CO2 was significantly greater after 1 week, with populations attaining twice the size of those on plants grown under ambient levels of CO2. Soybean leaves grown under elevated levels of CO2 were previously demonstrated at SoyfACE to have increased leaf temperature caused by reduced stomatal conductance. To separate the increased leaf temperature from other effects of elevated CO2, air temperature was lowered while the CO2 level was increased, which lowered overall leaf temperatures to those measured for leaves grown under ambient levels of CO2. Aphid population growth on plants grown under elevated CO2 and reduced air temperature was not significantly greater than on plants grown under ambient levels of CO2. By increasing Glycine max leaf temperature, elevated CO2 may increase populations of Aphis glycines and their impact on crop productivity.

关键词： Aphis glycines Matsumura elevated CO2 Glycine max Linnaeus leaftemperature

INVESTIGATION Of WO3-DOPED TiO2 fILM COMPOSITE PHOTOCATALYST

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Acta Metallurgica Sinica(English Letters) 2004年第3期17卷 263-268页

作者： Q.f. Meng K.R. Liu L. Jiang Q. Han J.S. Chen X.J. Wei School of Materials & Metallurgy Northeastern University Shenyang 110004 ChinaSchool of Materials & MetallurgyNortheastern University Shenyang 110004 ChinaSchool of Materials & MetallurgyNortheastern University Shenyang 110004 ChinaSchool of Materials & MetallurgyNortheastern University Shenyang 110004 ChinaSchool of Materials & MetallurgyNortheastern University Shenyang 110004 ChinaSchool of Materials & MetallurgyNortheastern University Shenyang 110004 China

The nano--crystal composite WO_3-TiO_2 photocatalyst was prepared by ultrasonic as-sisted sol--gel process. The effects of various factors, such as the crystal form, thesubstrates, the pH, the dissolved oxygen and the ultrasonic on the photocatalytic ac-tivity were investigated in view of the photodegradation of Rhodamine B. The resultsshow that the crystal form of WO_3-TiO_2 film with highest photocatalytic activity isrutile. The introduction of ultrasonic to the course of preparation can accelerate thedeposit time of the sol and increase the photocatalytic activity significantly in view ofthe highest photodegradation of Rhodamine B being 72.7% in 5 hours. The poroustitanium plate is the most suitable substrate in four kinds of investigated materials.Meanwhile the smaller the pH and the higher the concentration of the dissolved oxygenin the solution is, the higher the photodegradation is.

关键词： ultrasonic sol-gel process photocatalytic photodegradation

Microstructure and mechanical properties of Mg-to-Al dissimilar welded joints with an Ag interlayer using ultrasonic spot welding

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Journal of Magnesium and Alloys 2020年第2期8卷 552-563页

作者： H.Peng D.L.Chen X.f.Bai P.Q.Wang D.Y.Li X.Q.Jiang College of Engineering and Technology Southwest UniversityTiansheng Road 2Beibei DistrictChongqing 400715China Department of Mechanical and Industrial Engineering Ryerson University350 Victoria StreetTorontoOntario M5B 2K3Canada School of Materials and Energy Southwest UniversityTiansheng Road 2Beibei DistrictChongqing 400715China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

Lightweight ZEK100-0 Mg alloy and A16022-T43 Al alloy with an Ag interlayer were joined via ultrasonic spot welding(USW),focusing on the microstructural change and tensile lap shear strength of the welded joints in relation to welding ***/Al interface was superseded by Mg/Ag and Al/Ag interfaces,and unfavorable Mg门A-intermetallic compound was *** foil was observed to be intact in the nugget center,while it was broken or dissolved at the nugget edge at high welding energy *** diffusion layer at the Mg/Ag interface consisted of two distinctive sub-layers:Mg3Ag intermetallic compound adjoining Ag foil,and Mg3Ag-l-Mg eutectic structure adjacent to *** a thin diffusion layer consisting mainly of Ag3Al occurred al lhe Al/Ag *** tensile lap shear strength first increased,reached its peak value,and then decreased with increasing welding *** shear strength achieved in the present study was〜31%higher than that of the joint without *** failure occurred at all energy levels,with Ag foil particles or fragments being stuck on both Mg and Al sides due to its intense interaction with Mg and Al via accelerated diffusion during *** results obtained pave the way for the challenging dissimilar welding between Mg and Al alloys.

关键词： Magnesium alloy Aluminum alloy Ultrasonic spot welding Ag interlayer Microstructure Tensile lap shear strength

A scaffold vaccine to promote tumor antigen cross-presentation via sustained toll-like receptor-2(TLR2)activation

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Bioactive Materials 2024年第7期37卷 315-330页

作者： Daping Xie Congwei Han Chonghao Chen Zhencheng Liao Senio Campos de Souza Yiming Niu Joao f.Mano Lei Dong Chunming Wang State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao SARChina State Key Laboratory of Pharmaceutical Biotechnology School of Life SciencesNanjing UniversityNanjing210093China Department of Chemistry CICECO-Aveiro Institute of MaterialsUniversity of AveiroCampus Universitario de Santiago3810-193AveiroPortugal National Resource Center for Mutant Mice Nanjing210093China Department of Pharmaceutical Sciences Faculty of Health ScienceUniversity of MacaoTaipaMacao SARChina Zhuhai UM Science and Technology Research Institute(ZUMRI) University of MacaoHengqinChina Chemistry and Biomedicine Innovative Center Nanjing UniversityNanjingJiangsu210023China

Cancer vaccination holds great promise for cancer treatment,but its effectiveness is hindered by suboptimal activation of CD8+cytotoxic T lymphocytes,which are potent effectors to mediate anti-tumor immune responses.A possible solution is to switch antigen-presenting cells to present tumor antigens via the major histocompatibility complex class I(MHC-I)to CD8+T cells-a process known as *** achieve this goal,we develop a three-dimensional(3D)scaffold vaccine to promote antigen cross-presentation by persisted toll-like receptor-2(TLR2)activation after one *** vaccine comprises polysaccharide frameworks that“hook”TLR2 agonist(acGM)via tunable hydrophobic interactions and forms a 3D macroporous scaffold via click chemistry upon subcutaneous *** retention-and-release of acGM enables sustained TLR2 activation in abundantly recruited dendritic cells in situ,inducing intracellular production of reactive oxygen species(ROS)in optimal kinetics that crucially promotes efficient antigen *** scaffold loaded with model antigen ovalbumin(OVA)or tumor specific antigen can generate potent immune responses against lung metastasis in B16-OVA-innoculated wild-type mice or spontaneous colorectal cancer in transgenic ApcMin/+mice,***,it requires neither additional adjuvants nor external stimulation to function and can be adjusted to accommodate different *** developed scaffold vaccine may represent a new,competent tool for next-generation personalized cancer vaccination.

关键词： Scaffold vaccine TLR2 agonist Polysaccharide Reactive oxygen species Cross-presentation

hNUDT16:a universal decapping enzyme for small nucleolar RNA and cytoplasmic mRNA

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Protein & Cell 2011年第1期2卷 64-73页

作者： Guangwen Lu Jie Zhang Yan Li Zhixin Li Na Zhang Xiang Xu Tingting Wang Zhenhong Guan George f.Gao Jinghua Yan CAS Key Laboratory of Pathogenic Microbiology and Immunology(CASPMI) Institute of MicrobiologyChinese Academy of Sciences(CAS)Beijing 100101China Graduate University Chinese Academy of SciencesBeijing 100049China College of Life Science Anhui Agricultural UniversityAnhui 230036China Beijing Institutes of Life Science Chinese Academy of SciencesBeijing 100101China

Human NUDT16(hNUDT16)is a decapping enzyme initially identified as the human homolog to the Xenopus laevis *** a metalloenzyme,hNUDT16 relies on divalent cations for its cap-hydrolysis activity to remove m7 GDP and m227GDP from *** also determines substrate specificity of the *** far,only U8 small nucleolar RNA(snoRNA)has been identified as the substrate of hNUDT16 in the presence of Mg2+.Here we demonstrate that besides U8,hNUDT16 can also actively cleave the m7 GDP cap from mRNAs in the presence of Mg2+or Mn2+.We further show that hNUDT16 does not preferentially recognize U8 or mRNA substrates by our cross-inhibition and quantitative decapping *** addition,our mutagenesis analysis identifies several key residues involved in hydrolysis and confirms the key role of the REXXEE motif in *** an investigation into the subcellular localization of hNUDT16 revealed its abundance in both cytoplasm and *** findings extend the substrate spectrum of hNUDT16 beyond snoRNAs to also include mRNA,demonstrating the pleiotropic decapping activity of hNUDT16.

关键词： hNUDT16 mRNA U8 small nucleolar RNA decapping activity substrate specificity subcellular localization

Thirteen years to get from b to a:one of the neglected isoforms of IL-37 enters the stage

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Cellular & Molecular Immunology 2024年第2期21卷 201-202页

作者： Steven X.Cho Ina Rudloff Andrew M.Ellisdon Claudia A.Nold-Petry Marcel f.Nold Ritchie Centre Hudson Institute of Medical ResearchMelbourneVICAustralia Department of Pediatrics Monash UniversityMelbourneVICAustralia Cancer Program Biomedicine Discovery InstituteMonash UniversityMelbourneVICAustralia Monash Newborn Monash Children’s HospitalMelbourneVICAustralia

Interleukin(IL)-37 is one of the few anti-inflammatory members of the predominantly pro-inflammatory IL-1 cytokine ***-37 possesses alarmin-like properties[1]and exerts its activities via intracellular[2]as well as cell surface receptor-dependent mechanisms,and the latter involves IL-1R8 and IL-18Rα[3].Because of its powerful and broad-spectrum“peacemaking”[4]functions,considerable efforts have been invested in developing IL-37-based anti-inflammatory therapeutics[5,6].

关键词： Interleukin neglected cytokine

Photometric Analysis of Three Potential Red Nova Progenitors

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Research in Astronomy and Astrophysics 2022年第10期22卷 103-110页

作者： Surjit S.Wadhwa Ain De Horta Miroslav D.filipovic N.f.H.Tothill Bojan Arbutina Jelena Petrovic Gojko Djurasevic School of Science Western Sydney UniversityLocked Bag 1797PenrithNSW 2751Australia Department of Astronomy Faculty of MathematicsUniversity of BelgradeStudentski trg 1611000 BelgradeSerbia Astronomical Observatory Volgina 711060 BelgradeSerbia

We present photometric analysis of three bright red nova progenitor contact binary systems:ASAS J082151-0612.6,TYC 7281-269-1 and TYC *** primary components in all three systems are solar-type low mass stars with radii somewhat larger than their zero age main sequence *** secondaries,as in most contact binary systems,have radii and luminosities well above their main sequence *** three have extremely low mass ratios ranging from 0.075 to 0.097 and two have high degrees of contact,in excess of 75%.All three have mass ratios and separations below the theoretical values for orbital *** activity,a hallmark of magnetic activity and magnetic braking,considered important in mediating angular momentum loss,is also *** three systems demonstrate the O’Connell effect,and all systems require the introduction of star spots for a better light curve *** addition,we show that ASAS J082151-0612.6 and TYC 7281-269-1 have a UV color excess in the range indicating high chromospheric *** measure of potential significant magnetic activity is X-ray luminosity;TYC 7275-1968-1 and probably also TYC 7281-269-1 have X-ray luminosity well above other contact binary *** conclude that it is likely that all three are unstable and hence are potential merger candidates.

关键词： (stars:)binaries eclipsing-techniques photometric-stars low-mass

Crystal structure of the C-terminal fragment of NS1 protein from yellow fever virus

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Science China(Life Sciences) 2017年第12期60卷 1403-1406页

作者： Haiyuan Wang Min Han Jianxun Qi Rolf Hilgenfeld Tingrong Luo Yi Shi George f.Gao Hao Song Laboratory of Animal Infectious Diseases College of Animal Sciences and Veterinary MedicineGuangxi UniversityNanning 530004China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Institute of Biochemistry Center for Structural and Cell BiologyUniversity of LubeckLubeck 23562Germany German Center for Infection Research(DZIf) Hamburg-Liibeck Borstel-Riems SiteUniversity of LubeckLubeck 23562Germany Center for Influenza Research and Early-warning(CASCIRE) Chinese Academy of SciencesBeijing 100101China Savaid Medical School University of Chinese Academy of Sciences Beijing 100049China Shenzhen Key Laboratory of Pathogen and Immunity Shenzhen Third People's HospitalShenzhen 518112China Research Network of Immunity and Health(RNIH) Beijing Institutes of Life ScienceChinese Academy of SciencesBeijing 100101China National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention(China CDC)Beijing 102206China

Dear Editor,Yellow fever（Yf）,a mosquito-borne flavivirus disease,is endemic in tropical areas of Africa and Central and South *** is transmitted via the bite of infected Aedes aegypti or Haemogogus mosquitoes and ma... 详细信息

关键词： Crystal structure of the C-terminal fragment of NS1 yellow fever virus

An Efficient CNN-Based Hybrid Classification and Segmentation Approach for COVID-19 Detection

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Computers, Materials & Continua 2022年第3期70卷 4393-4410页

作者： Abeer D.Algarni Walid El-Shafai Ghada M.El Banby fathi E.Abd El-Samie Naglaa f.Soliman Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh 84428Saudi Arabia Department of Electronics and Electrical Communications Faculty of Electronic EngineeringMenoufia UniversityMenouf 32952Egypt Department of Industrial Electronics and Control Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf 32952Egypt Department of Electronics and Communications Engineering Faculty of EngineeringZagazig UniversityZagazigSharqia 44519Egypt

COVID-19 remains to proliferate precipitously in the *** has significantly influenced public health,the world economy,and the persons’***,there is a need to speed up the diagnosis and precautions to deal with COVID-19 *** this explosion of this pandemic,there is a need for automated diagnosis tools to help specialists based onmedical *** paper presents a hybrid Convolutional Neural Network(CNN)-based classification and segmentation approach for COVID-19 detection from Computed Tomography(CT)*** proposed approach is employed to classify and segment the COVID-19,pneumonia,and normal CT *** classification stage is firstly applied to detect and classify the input medical CT ***,the segmentation stage is performed to distinguish between pneumonia and COVID-19 CT *** classification stage is implemented based on a simple and efficient CNN deep learning *** model comprises four Rectified Linear Units(ReLUs),four batch normalization layers,and four convolutional(Conv)*** layer depends on filters with sizes of 64,32,16,and 8.A2×2windowand a stride of 2 are employed in the utilized four max-pooling layers.A soft-max activation function and a fully-Connected(fC)layer are utilized in the classification stage to perform the detection *** the segmentation process,the Simplified Pulse Coupled Neural Network(SPCNN)is utilized in the proposed hybrid *** proposed segmentation approach is based on salient object detection to localize the COVID-19 or pneumonia region,*** summarize the contributions of the paper,we can say that the classification process with a CNN model can be the first stage a highly-effective automated diagnosis *** the images are accepted by the system,it is possible to perform further processing through a segmentation process to isolate the regions of interest in the *** region of interest can be assesses both automatically and through ***

关键词： COVID-19 segmentation classification CNN SPCNN CT images