检索结果-南通市图书馆

Rocahepevirus ratti: An underrecognised cause of acute hepatitis

在线全文

学校读者我要写书评

暂无评论

World Journal of Hepatology 2024年第8期16卷 1084-1090页

作者： george s ghe.lan Department of Infectious Diseases “Carol Davila”University of Medicine and PharmacyBucharest 050474Romania

Zoonoses are responsible for many of all emerging infectious diseases as well as for those already *** ratti is a rat-originated virus related to the hepatitis E virus(Paslahepevirus balayani)but highly divergent genetically from this,with a high cross-species infection potential and zoonotic *** can infect humans,leading to acute hepatitis,and is primarily transmitted through the consumption of contaminated *** ratti was first discovered in Germany in *** first human case was described in 2017 in Hong Kong in an immune-compromised *** first case of chronic infection with Rocahep-evirus ratti was described in 2023.A meta-analysis based on 38 studies published between 2000 and 2023 identified 21 cases in humans described up to this date and 489 infections in different *** awareness regarding this virus is essential,as there are probably many cases that remain undiagnosed,and the virus even has the ability to produce chronic infections in selected patients.

关键词： Hepatitis Rocahepevirus ratti Rats Zoonoses Hepeviridae Liver

A direct electrochemical biosensor for rapid glucose detection based on nitrogen-doped carbon nanocages

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2184-2192页

作者： lan-lan Li Yu Zhao Li-Jia Pan Jian-Bin Xu Yi shi College of Mechanical and Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China school of Electronic science and Engineering Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Department of Electronic Engineering The Chinese University of HongKongHongkong 999077China

Given the increasing number of diabetic patients,rapid and accurate detection of glucose in body fluids is *** study developed a direct electrochemical biosensor for glucose based on nitrogen-doped carbon nanocages(NCNCs).NCNCs possess a large specific surface area of 1395 m^(2)·g^(-1),a high N atomic content of 9.37%and good biocompatibility,which is favorable for enzyme loading and electron *** surface average concentration of electroactive glucose oxidase on NCNCs was 2.82×10^(-10)mol·cm^(-2).The NCNC-based direct electrochemical biosensor exhibited a high sensitivity of 13.7μA·(mmol·L^(-1))^(-1)·cm^(-2),rapid response time of 5 s and an impressive electron-transferrate constant(ks)of 1.87 s^(-1).Furthermore,we investigated an NCNC-based direct electron transfer(DET)biosensor for sweat glucose detection,which demonstrated tremendous promise for non-invasive wearable diabetes diagnosis.

关键词： Direct electron transfer(DET) Nitrogen-doped carbon nanocages(NCNCs) Glucose oxidase Biosensor

Editorial:special topic on advanced energy catalytic materials

在线全文

学校读者我要写书评

暂无评论

science China Materials 2024年第6期67卷 1681-1683页

作者： shaojun Guo Yaqian lan school of Materials science and Engineering Peking UniversityBeijing 100871China school of Chemistry South China Normal UniversityGuangzhou 510630China

Aiming to lowering the society’s dependence on fossil fuels,energy catalysis stands at the forefront of technological advancement,which promises to revolutionize the way we harness,convert,and utilize renewable *** current special topic of our journal,titled"Advanced Energy Catalytic Materials",aims to highlight the latest innovations,challenges,and opportunities in this exciting field.

关键词： field utilize catalysis

Tunable Phase structure of side-chain Liquid Crystalline Polymers Enabled by Molecular Engineering of Dual Mesogenic Cores

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer science 2024年第10期42卷 1459-1469页

作者： Wen-Huan Yao lan-sheng Liu Jie Zhao Yan-Xia Wang An-Zhi Ma Zheng-Rui Ma lan-Ying Zhang Ruo-Chen lan College of Chemistry and Chemical Engineering Hunan University Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-Environmental Polymer Materials of Gansu ProvinceCollege of Chemistry and Chemical Engineering Northwest Normal University Department of Materials science and Engineering College of Engineering Peking University Institute of Advanced Materials & Key Lab of Fluorine and silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical Engineering Jiangxi Normal University

A series of novel side-chain liquid crystalline (sCLC) copolymers were synthesized by attaching two distinct mesogenic units, namely a chiral cholesteryl-based monomer (M1) and an achiral biphenyl-based monomer (M2), to a poly(3-mercaptopropylmethylsiloxane)(PMMs) backbone via thiol-ene click chemistry. The influence of side chain composition on the self-assembly behavior and phase structures of these sCLC copolymers was systematically investigated using different instrument. Results indicate that three distinct liquid crystalline phases and four unique molecular configurations were identified within the polymer series, with the emergence of the liquid crystalline phase being a synergistic outcome of the two distinct side chains. This study underscores the critical influence of side chain dimensions, rigidity, and spatial volume on the self-assembly structures and phase characteristics of liquid crystalline polymers, providing valuable insights for the rational design and development of advanced functional materials with tailored properties.

关键词： Chiral molar ratio Liquid crystalline copolymers Phase structure self-assembly

Heterosis effect for larval performance of fall armyworm interstrain hybrids

在线全文

学校读者我要写书评

暂无评论

Insect science 2024年第4期31卷 1296-1312页

作者： Laijiao lan Nicolas Nègre DGIMI University of MontpellierINRAEMontpellierFrance

spodoptera frugiperda,also known as fall armyworm(FAW),is an invasive crop pest that can feed on a variety of host plants,posing a serious threat to food *** are two sympatric strains of FAW that are morphologically identical but described with different food preferences:the“rice strain”(sfR)and the“corn strain”(sfC).A few genetic loci exist to identify these two *** and Z-chromosome-linked haplotypes are the most used,but the biggest part of the genome displays little polymorphism between strains that could explain their adaptation to different *** have previously observed consistent transcription differences between the strains in both laboratory and natural ***,we wonder if there are effects from host-strain-associated loci,maternally or paternally inherited,on FAW performance that could explain the divergence between the two FAW *** test this hypothesis,we first produced two F1 hybrid generations(sfR♀×sfC♂,sfC♀×sfR♂).These reciprocal hybrids should be heterozygous for all chromosomes except for the maternally inherited mitochondrial and sexual W *** evaluate whether plant preference is determined by these genetic loci,we cultivated the two hybrids and the two parental strains in triplicate on an artificial diet and recorded several phenotypic traits such as weight over time,survival rate,emerging rate,developmental time,and sex ***,the same performance experiment was carried out on corn ***,on the artificial diet,the two hybrid genotypes were both more performant than the two parental strains in terms of survival rate,pupal emerging rate,and developmental time,whereas they were intermediate to the inbred parental strains in pupal *** the corn plant diet,both hybrid genotypes outperformed the two parental strains in larval *** these asymmetrical results revealed that mitochondrial or sex-linked haplotypes alone cannot explain the performance differences

关键词： fall armyworm Haldane's rule heterosis hybrid performance mitochondria

Taphonomy and Paleoecology of Lycoptera: A Case study from the Lower Jehol Group in Western Liaoning, Northeastern China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Earth science 2024年第3期35卷 737-746页

作者： Zhongwu lan Rong Cao shujing Zhang state Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China state Key Laboratory of Palaeobiology and stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China state Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China College of Earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100049China Department of Geology Trinity CollegeDublin 999015Ireland

Taphonomy and paleoecology(biological behavior)of the Early Cretaceous fish fossils are poorly *** study reports for the first time a detailed taphonomical and paleoecological study on Lycoptera in the Mesozoic strata of western Liaoning Province,NE *** XRD analysis shows that gismondine is the dominant clay minerals that could have contributed to the preservation of Lycoptera fossils and microbial mat fragments in the fossil-bearing *** may have formed under volcanism-related hydrothermal regime that was transformed from crystal and lithic ***μ-XRF imaging analysis shows a dominant chemical composition of Al,si,P,s,Rh,K,Ca,Ti,C,Cr,Mn,Fe,Ni,among which P,Ca,C and s are enriched in the fish skeleton in comparison to the *** suggests a dominant apatite composition for the fish *** influence did not smear off these organic signals probably because of protection of *** coexistance of C and s with Ni is assumed to represent recovered primary productivity following volcanic explosions and toxic gas *** head of juvenile fish stays close to the body of adult *** further discoveries,such phenomenon is interpreted to suggest that adult fish actively protected juvenile fish in the presence of environmental pressures such as anoxia and deterioration of water quality induced by *** acidification and hypoxia in association with volcanism created a harmful environment causing mass extinction of *** adult Lycoptera protected their juveniles by its body at the moment before *** biological behavior will be increasingly reported given the wide occurrence of Lycoptera in Mesozoic strata.

关键词： Lycoptera taphonomy paleoecology fish Jehol Group NE China.

Normalized solution for p-Kirchhoff Equation with a L2-supercritical Growth

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae sinica 2024年第2期40卷 414-429页

作者： Zhi-min REN Yong-yi lan school of sciences Jimei UniversityXiamen 361005China

In this paper,we investigate the following p-Kirchhoff equation{∫R^(N)|u|^(2)dx=ρ,(a+b)∫RN(|Δu}^(p)+|u|^(p))dx)(-Δpu+|u|^(p-2u)=|u|^(s-2)u+μu,x∈R^(N),where a>0,b≥0,p>0 are constants,constants,p*=N-P/Np is the critical sobolev exponent,μis a Lagrange multiplier,-Δpu=-div(|Δu|_(p-2)u),2s∈(2N/N+2p-2,p*).We demonstratethat he p-Kirchhoff equation has a normalized solution using the mountain pass lemma and some analysis techniques.

关键词： p-Kirchhoff equation normalized solution mountain-pass lemma

Electrospun PCL/gelatin/arbutin nanofiber membranes as potent reactive oxygen species scavengers to accelerate cutaneous wound healing

在线全文

学校读者我要写书评

暂无评论

Regenerative Biomaterials 2024年第3期3卷 43-55页

作者： Mindong Du shuhan Liu Nihan lan Ruiming Liang shengde Liang Maoqiang lan Disen Feng Li Zheng Qingjun Wei Ke Ma Department of Orthopaedics Trauma and Hand surgery The First Affliated Hospital of Guangxi Medical UniversityGuangxi Medical UniversityNanning 530521China Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration The First Affliated Hospital of Guangxi Medical UniversityGuangxi Medicar UniversityNanning530021China Guangxi Collaborative Innovation Center for Biomedicine The First Affliated Hospital of Guangxi Medical UniversityGuangxi Medical UniversityNanning 530021China Department of Plastic&Cosmetic surgery.The First Affliated Hospital of Guangxi Medical University Guangxi Medical UniversityNanning 530021China Pharmaceutical College Guangxi Medical UniversityNanning530021China

The presence of excessive reactive oxygen species(Ros)at a skin wound site is an important factor affecting wound *** scavenging,which regulates the ROs microenvironment,is essential for wound *** this study,we used novel electrospun PCL/gelatin/arbutin(PCL/G/A)nanofibrous membranes as wound dressings,with PCL/gelatin(PCL/G)as the backbone,and plantderived arbutin(hydroquinone-β-D-glucopyranoside,ARB)as an effective antioxidant that scavenges ROos and inhibits bacterial infection in *** loading of ARB increased the mechanical strength of the nanofibres,with a water vapour transmission rate of more than 2500g/(m^(2)×24h),and the water contact angle decreased,indicating that hydrophilicity and air permeability were significantly *** release and degradation experiments showed that the nanofibre membrane controlled the drug release and exhibited favourable *** experiments showed that the PCL/G/A nanofibre membranes were biocompatible,and DPPH and ABTs+radical scavenging experiments indicated that PCL/G/A could effectively scavenge ROs to reflect the antioxidant *** addition,haemostasis experiments showed that PCL/G/A had good haemostatic effects in vitro and in *** vivo animal wound closure and histological staining experiments demonstrated that PCL/G/A increased collagen deposition and remodelled epithelial tissue regeneration while showing good in vivo biocompatibility and *** conclusion,we successfully prepared a multifunctional wound dressing,PCL/G/A,for skin wound healing and investigated its potential role in wound healing,which is beneficial for the clinical translational application of phytomedicines.

关键词： arbutin nanofiber membranes wound dressing reactive oxygen species

self-propelled Leidenfrost droplets on femtosecond-laser-induced surface with periodic hydrophobicity gradient

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第2期6卷 502-509页

作者： Bohong Li lan Jiang Xiaowei Li Zhipeng Wang Peng Yi Laser Micro/Nano Fabrication Laboratory School of Mechanical EngineeringBeijing Institute of TechnologyBeijingPeople’s Republic of China Beijing Institute of Technology Chongqing Innovation Center ChongqingPeople’s Republic of China Yangtze Delta Region Academy of Beijing Institute of Technology JiaxingPeople’s Republic of China

The controllable transfer of droplets on the surface of objects has a wide application prospect in the fields of microfluidic devices,fog collection and so *** Leidenfrost effect can be utilized to significantly reduce motion ***,the use of 3D structures limits the widespread application of self-propulsion based on Leidenfrost droplets in microelectromechanical *** manipulate Leidenfrost droplets,it is necessary to create 2D or quasi-2D *** this study,femtosecond laser is applied to fabricate a surface with periodic hydrophobicity gradient(sPHG),enabling directional self-propulsion of Leidenfrost *** field analysis within the Leidenfrost droplets reveals that the vapor layer between the droplets and the hot surface can be modulated by the sPHG,resulting in directional propulsion of the inner *** viscous force between the gas and liquid then drives the droplet to move.

关键词： self-propelled Leidenfrost droplets periodic hydrophobicity gradient femtosecond laser fabrication