检索结果-南通市图书馆

International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1016-1025页

作者： Wanlin Wang cheng Lu Liang Hao Jie Zeng Lejun Zhou Xinyuan Liu Xia Li chenyang Zhu School of Metallurgy and Environment Central South UniversityChangsha 410083China National center for International Research of clean Metallurgy Central South UniversityChangsha 410083China Institute of Research of Iron and Steel ShasteelJiangsu ProvinceZhangjiagang 215625China

The interfacial wettability and heat transfer behavior are crucial in the strip casting of high phosphorus-containing steel.A hightemperature simulation of strip casting was conducted using the droplet solidification technique with the aims to reveal the effects of phosphorus content on interfacial wettability,deposited film,and interfacial heat transfer *** showed that when the phosphorus content increased from 0.014wt%to 0.406wt%,the mushy zone enlarged,the complete solidification temperature delayed from1518.3 to 1459.4℃,the final contact angle decreased from 118.4°to 102.8°,indicating improved interfacial contact,and the maximum heat flux increased from 6.9 to 9.2 MW/*** the phosphorus content from 0.081wt%to 0.406wt%also accelerated the film deposition rate from 1.57 to 1.73μm per test,resulting in a thickened naturally deposited film with increased thermal resistance that advanced the transition point of heat transfer from the fifth experiment to the third experiment.

关键词： strip casting interfacial heat transfer interfacial wettability naturally deposited film phosphorus content

Genetic variant in a BaP-activated super-enhancer increases prostate cancer risk by promoting AhR-mediated FAM227A expression

在线全文

学校读者我要写书评

暂无评论

Journal of Biomedical Research 2024年第2期38卷 149-162,I0001-I0010页

作者： Lulu Fan Hao Wang Shuai Ben Yifei cheng Silu chen Zhutao Ding Lingyan Zhao Shuwei Li Meilin Wang Gong cheng Department of Environmental Genomics Jiangsu Key Laboratory of Cancer BiomarkersPrevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Genetic Toxicology the Key Laboratory of Modern Toxicology of Ministry of EducationCenter for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Urology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China

Genetic variants in super-enhancers(SEs)are increasingly implicated as a disease risk-driving *** studies have reported an associations between benzo[a]pyrene(BaP)exposure and some malignant tumor ***,it is unclear whether BaP is involved in the effect of genetic variants in SEs on prostate cancer risk,nor the associated intrinsic molecular *** the current study,by using logistic regression analysis,we found that rs5750581T>c in 22q-SE was significantly associated with prostate cancer risk(odds ratio=1.26,P=7.61×10^(-5)).We also have found that the rs6001092T>G,in a high linkage disequilibrium with rs5750581T>c(r^(2)=0.98),is located in a regulatory aryl hydrocarbon receptor(AhR)motif and may interact with the FAM227A promoter in further bioinformatics *** then performed a series of functional and BaP acute exposure experiments to assess biological function of the genetic variant and the target ***,the rs6001092-G allele strengthened the transcription factor binding affinity to AhR,thereby upregulating FAM227A,especially upon exposure to BaP,which induced the malignant phenotypes of prostate *** current study highlights that AhR acts as an environmental sensor of BaP and is involved in the SE-mediated prostate cancer risk,which may provide new insights into the etiology of prostate cancer associated with the inherited SE variants under environmental carcinogen stressors.

关键词： super-enhancer prostate cancer genetic variants AhR BaP FAM227A

3D‑Printed carbon‑Based conformal Electromagnetic Interference Shielding Module for Integrated Electronics

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第5期16卷 87-101页

作者： Shaohong Shi Yuheng Jiang Hao Ren Siwen Deng Jianping Sun Fangchao cheng Jingjing Jing Yinghong chen State Key Laboratory of Featured Metal Materials and Life‑cycle Safety for composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNo.100Daxuedong RoadNanning 530004People’s Republic of China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversitySichuan UniversityNo.24 South Section 1Yihuan RoadChengdu 610065People’s Republic of China

Electromagnetic interference shielding(EMI SE)modules are the core com-ponent of modern ***,the tra-ditional metal-based SE modules always take up indispensable three-dimensional space inside electronics,posing a major obstacle to the integra-tion of *** innovation of integrating 3D-printed conformal shielding(c-SE)modules with packaging materials onto core electronics offers infinite possibilities to satisfy ideal SE func-tion without occupying additional ***,the 3D printable carbon-based inks with various proportions of graphene and carbon nanotube nanoparticles are well-formulated by manipulating their rheological ***,the free-constructed architectures with arbitrarily-customized structure and multifunctionality are created via 3D *** particular,the SE performance of 3D-printed frame is up to 61.4 dB,simultaneously accompanied with an ultralight architecture of 0.076 g cm^(-3) and a superhigh specific shielding of 802.4 dB cm3 g^(-1).Moreover,as a proof-of-concept,the 3D-printed c-SE module is in situ integrated into core electronics,successfully replacing the traditional metal-based module to afford multiple functions for electromagnetic compatibility and thermal ***,this scientific innovation completely makes up the blank for assembling carbon-based c-SE modules and sheds a brilliant light on developing the next generation of high-performance shielding materials with arbitrarily-customized structure for integrated electronics.

关键词： 3D printing carbon-based nanoparticles conformal electromagnetic interference shielding Integrated electronics

Rational design of vitamin c/defective carbon van der Waals heterostructure for enhanced activity,durability and storage stability toward oxygen reduction reaction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2024年第1期88卷 103-111,I0003页

作者： Ruiqi cheng Kaiqi Li Huanxin Li Tianshuo Zhao Yibo Wang Qingyue Xue Jiao Zhang chaopeng Fu Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China christopher Ingold Laboratory Department of ChemistryUniversity College LondonLondon WC1H 0AJUK Department of chemistry Physical&Theoretical Chemistry LaboratoryUniversity of OxfordSouth Parks RoadOxford OX13QZUK

Metal-free defective carbon materials with abundant active sites have been widely studied as low-cost and efficient oxygen reduction reaction(ORR)electrocatalysts in metal-air ***,the active sites in defective carbon are easily subjected to serious oxidation or hydroxylation during ORR or storage,leading to rapid degradation of ***,we design a van der Waals heterostructure comprised of vitamin c(Vc)and defective carbon(Dc)to not only boost the activity but also enhance the durability and storage stability of the Dc-Vc *** formation of Vc van der Waals between Dc and Vc is demonstrated to be an effective strategy to protect the defect active sites from oxidation and hydroxylation degradation,thus significantly enhancing the electrochemical durability and storage anti-aging ***,the Dc-Vc van der Waals can reduce the reaction energy barrier to facilitate the *** findings are also confirmed by operando Fourier transform infrared spectroscopy and density functional theory *** is necessary to mention that the preparation of this Dc-Vc electrocatalyst can be scaled up,and the ORR performance of the largely produced electrocatalyst is demonstrated to be very ***,the Dc-Vc-based aluminum-air batteries display very competitive power density with good performance maintenance.

关键词： Van der Waals heterostructure Oxygen reduction reaction Stability Scalable production Aluminum-air battery

Degradation analysis and doping modification optimization for high-voltage P-type layered cathode in sodium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2024年第2期89卷 1-9,I0002页

作者： Bao Zhang Yi Zhao Minghuang Li Qi Wang Lei cheng Lei Ming Xing Ou Xiaowei Wang National Engineering Laboratory for High-Efficiency Recovery of Refractory Nonferrous Metals School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083HunanChina Zhejiang Power New Energy co. LTDZhuji 311800ZhejiangChina

Advancing high-voltage stability of layered sodium-ion oxides represents a pivotal avenue for their progress in energy storage *** this,a comprehensive understanding of the mechanisms underpinning their structural deterioration at elevated voltages remains insufficiently *** this study,we unveil a layer delamination phenomenon of Na_(0.67)Ni_(0.3)Mn_(0.7)O_(2)(NNM)within the 2.0-4.3 V voltage,attributed to considerable volumetric fluctuations along the c-axis and lattice oxygen reactions induced by the simultaneous Ni^(3+)/Ni^(4+)and anion redox *** introducing Mg doping to diminished Ni-O antibonding,the anion oxidation-reduction reactions are effectively mitigated,and the structural integrity of the P2 phase remains firmly intact,safeguarding active sites and precluding the formation of novel *** Na_(0.67)Mg_(0.05)Ni_(0.25)Mn_(0.7)O_(2)(NMNM-5)exhibits a specific capacity of100.7 mA h g^(-1),signifying an 83%improvement compared to the NNM material within the voltage of2.0-4.3 *** investigation underscores the intricate interplay between high-voltage stability and structural degradation mechanisms in layered sodium-ion oxides.

关键词： Soidum ion batteries Layer cathode materials P-type High-voltage performance Degradation analysis

Stability analysis of intermittently jointed rock slopes based on the stepped failure mode

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2024年第3期21卷 1019-1035页

作者： LI Dejian FU Junwen LI Hekai cheng Xiao ZHAO Lianheng ZHANG Yingbin PENG Xinyan School of civil Engineering Southwest Jiaotong UniversityChengdu 610031China Institute for Disaster Management and Reconstruction College of Architecture&EnvironmentSichuan UniversityChengdu 610065China School of civil Engineering Key Laboratory of Heavy-Haul Railway Engineering StructureMinistry of EducationHunan Provincial Key Laboratory for Disaster Prevention and Mitigation of Rail Transit Engineering StructureCentral South UniversityChangsha 410075China

In practical engineering,due to the noncontinuity characteristics of joints in rock slopes,in addition to plane failure,stepped sliding failure may occur for intermittently jointed rock *** for intermittently bedding jointed rock slopes,the correlation and difference in strength parameters between joints and rock bridges,along with the various failure modes and intermittency of rock bridges,contribute to the complexity of stepped failure modes and the unpredictability of failure *** on the upper-bound limit analysis method and multi-sliders step-path failure mode,considering the shear and tensile failure of rock bridges and the weakened relationship between the strength parameters of rock bridges and jointed surfaces,by introducing the modified M-c failure criterion and the formula for calculating the energy consumption of tensile failure of rock bridges,two failure mechanisms are constructed to obtain the safety factor(F_(s))of intermittently jointed rock *** sequential quadratic programming method is used to obtain the optimal upper-bound solution for F_(s).The influence of multiple key parameters(slope height H,horizontal distance L,Slope angleβ,shear strength parameters of the rock bridgeφr and cr,Dimensionless parameter u,weakening coefficients of the internal friction angle and cohesion between the rock bridges and joint surfaces Kφand Kc)on the stability analysis of intermittently jointed rock slopes under the shear failure mode of rock bridges as well as under the tensile failure mode is also *** reliability of the failure mechanisms is verified by comparative analysis with theoretical results,numerical results,and landslide cases,and the variation rules of F_(s)with each key parameter are *** results show that F_(s) varies linearly withφr and cr of the rock bridge and with K_(φ)and K_(c),whereas F_(s)changes nonlinearly with H and *** particular,with the increase in Kφand Kc,Fs increases by approximately 52.

关键词： Jointed rock slopes Stepped sliding failure Weakening characteristics Modified M‒c failure criterion

Robust carbon-carbon cleavage in Lignin to Produce Phenol and cyclohexanone

在线全文

学校读者我要写书评

暂无评论

chemical Research in chinese Universities 2024年第1期40卷 29-35页

作者： WANG Lulin cheng Xiaomeng DONG Minghua LUAN Sen WU Yuxuan HAN Buxing LIU Huizhen Beijing National Laboratory for Molecular Sciences CAS Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesCenter for Carbon Neutral ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China University of chinese Academy of Sciences Beijing 100049P.R.China

The challenge of breaking 5-5'bonds in lignin,attributed to their high bonding energy,has prompted the development of a new transformation ***,an important model compound for lignin,contains these 5-5'bonds,making it crucial to devise a strategy for their cleavage in lignin *** study introduces a novel method for transforming biphenyl,involving selective hydrogenation to cyclohexylbenzene by Ni/SiO2 catalyst,followed by its oxidation to phenol and cyclohexanone through a radical *** demonstrate that the catalysts with small particles have strong catalytic activity,while there is little difference in *** reason for the high selectivity of cyclohexylbenzene is due to the limited adsorption of cyclohexylbenzene on Ni/*** work presents a fresh approach to breaking resilient c-c bonds in lignin.

关键词： Lignin 5-5'Bond Ni/SiO_(2) Phenol

Investigation on photonic crystal nanobeam cavity based on mixed diamond–circular holes

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

Nanotechnology and Precision Engineering 2024年第1期7卷 63-70页

作者： Jingtong Bin Kerui Feng Shang Ma Ke Liu Yong cheng Jing chen Qifa Liu college of Telecommunication and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China college of Electronic and Optical Engineering and college of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210003China State Key Laboratory of Advanced Optical communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China

A photonic crystal nanobeam cavity(M-PcNc)with a structure incorporating a mixture of diamond-shaped and circular air holes is *** performance of the cavity is simulated and studied *** theﬁnite-difference time-domain method,the parameters of the M-PcNc,including cavity thickness and width,lattice constant,and radii and numbers of holes,are optimized,with the quality factor Q and mode volume Vm as performance *** modulation of the lattice constant and hole radius enable the proposed M-PcNc to realize outstanding *** optimized cavity possesses a high quality factor Q 1.45105 and an ultra-small mode=×volume Vm 0.01(λ/n)[Zeng et al.,Opt Lett 2023:48;3981–3984]in the telecommunications wavelength *** can be progres-=sively squeezed in both the propagation direction and the perpendicular in-plane direction by a series of interlocked anti-slots and slots in the diamond-shaped hole ***,the energy can be conﬁned within a small mode volume to achieve an ultra-high Q/Vm ratio.

关键词： Photonic crystal nanobeam cavity Mixed diamond–circular holes Slots and anti-slots FDTD simulation Quality factor Mode volume

Tumor necrosis factor-stimulated gene-6 ameliorates early brain injury after subarachnoid hemorrhage by suppressing NLRc4 inflammasome-mediated astrocyte pyroptosis

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第5期19卷 1064-1071页

作者： Mingxiang Ding Lei Jin Boyang Wei Wenping cheng Wenchao Liu Xifeng Li chuanzhi Duan Neurosurgery center Department of Cerebrovascular SurgeryThe National Key Clinical SpecialtyThe Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular DiseaseGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationThe Neurosurgery Institute of Guangdong ProvinceZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina Department of cerebrovascular Intervention Zhongshan City People’s HospitalZhongshanGuangdong ProvinceChina

Subarachnoid hemorrhage is associated with high morbidity and mortality and lacks effective *** is a crucial mechanism underlying early brain injury after subarachnoid *** studies have confirmed that tumor necrosis factor-stimulated gene-6(TSG-6)can exert a neuroprotective effect by suppressing oxidative stress and ***,no study to date has explored whether TSG-6 can alleviate pyroptosis in early brain injury after subarachnoid *** this study,a c57BL/6J mouse model of subarachnoid hemorrhage was established using the endovascular perforation *** results indicated that TSG-6 expression was predominantly detected in astrocytes,along with NLRc4 and gasdermin-D(GSDMD).The expression of NLRc4,GSDMD and its N-terminal domain(GSDMD-N),and cleaved caspase-1 was significantly enhanced after subarachnoid hemorrhage and accompanied by brain edema and neurological *** explore how TSG-6 affects pyroptosis during early brain injury after subarachnoid hemorrhage,recombinant human TSG-6 or a siRNA targeting TSG-6 was injected into the cerebral *** TSG-6 administration downregulated the expression of NLRc4 and pyroptosis-associated proteins and alleviated brain edema and neurological ***,TSG-6 knockdown further increased the expression of NLRc4,which was accompanied by more severe astrocyte *** summary,our study revealed that TSG-6 provides neuroprotection against early brain injury after subarachnoid hemorrhage by suppressing NLRc4 inflammasome activation-induced astrocyte pyroptosis.

关键词： astrocyte early brain injury inflammasome NLRc4 pyroptosis subarachnoid hemorrhage tumor necrosis factor-stimulated gene-6(TSG-6)

e^(+)e^(-)→Λ_(c)+Λ_(c)^(- ) cross Sections and the Λ_(c)^(+) Electromagnetic Form Factors within the Extended Vector Meson Dominance Model

在线全文

学校读者我要写书评

暂无评论

chinese Physics Letters 2024年第2期41卷 36-41页

作者：陈诚闫冰谢聚军 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Sciences and Technology University of Chinese Academy of SciencesBeijing 101408China college of Mathematics and Physics Chengdu University of TechnologyChengdu 610059China Southern center for Nuclear-Science Theory(ScNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China

Within the extended vector meson dominance model,we investigate the𝑒e^(+)e^(-)→Λ_(c)+Λ_(c)^(- ) reaction and the electromagnetic form factors of the charmed baryon𝛬 Λ_(c)^(+)𝑐.The model parameters are determined by fitting them to the cross sections of the process𝑒e^(+)e^(-)→Λ_(c)+Λ_(c)^(- ) and the magnetic form factor|G_(M)|of Λ_(c)^(+) .By considering four charmonium-like states,called𝜓(4500),𝜓(4660),𝜓(4790),and𝜓(4900),we can well describe the current data on the𝑒e^(+)e^(-)→Λ_(c)+Λ_(c)^(- ) reaction from the reaction threshold up to 4.96 *** addition to the total cross sections and|𝐺M|,the ratio|G_(E)/G_(M)|and the effective form factor|Geff|for Λ_(c)^(+) 𝑐are also calculated,and found that these calculations are consistent with the experimental *** the fitted model parameters,we have also estimated the charge radius of the charmed Λ_(c)^(+) baryon.

关键词： fitted radius meson