检索结果-南通市图书馆

Oxidation behavior of Ni-based superalloy.GH4738 under tensile stress

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第8期43卷 3913-3920页

作者： ji-chong Hu Hai-Liang Huang chong-chong Wu Xiao-y. Sun jie Wang y.n-Hong y.ng jing-Long Qu Liang jiang jin-He Dou y.ng Chen Institute for Advanced Studies in Precision Materials Yantai UniversityYantai 264005China Department of Management and Engineering Linkoping University58183LinkopingSweden Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Gaona Aero Material Co. LtdBeijing 100081China College of Artificial Intelligence and Big Data Shandong First Medical University and Shandong Academy of Medical SciencesJinan250117China

Revealing the oxidation behavior of superalloy. is crucial for optimizing material properties and extending service *** study.investigated the oxidation behavior of superalloy.GH4738 under stress states at 850℃.High-throughput specimens were fabricated to withstand different stresses at the same *** oxidation s amples were analy.ed using the mass gain method to obtain oxidation kinetic *** results show that the external stress below 200 MPa could improve the oxidation resistance of the *** tensile stress increasing,the oxide lay.r becomes thinner,denser and more complete,while internal oxidation *** tensile stress alters the structure of the external oxide lay.r from a two-lay.r to a threelay.r *** Cr_(2)O_(3) oxide lay.r inhibits the outward diffusion of Ti,leading to Ti enrichment at the oxide-matrix interface and altering the oxidation mechanism of GH4738.

关键词： Ni-based Superalloy Oxidation behavior Tensile stress Oxide lay.r

Evaluating different levels of information on the calibration of building energy.simulation models

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2024年第4期17卷 657-676页

作者： Siy. Cheng Zey.ep Duy.u Tekler Hongy.an ji Wenxin Li Adrian chong Department of the Built Environment College of Design and EngineeringNational University of Singapore4 Architecture DriveSingapore117566Singapore School of Civil Engineering and Architecture Chongqing University of Science and TechnologyChongqing401331China School of Energy.and Environment Southeast UniversityNanjing210096China

A poorly.calibrated model undermines confidence in the effectiveness of building energy.simulation, impeding the widespread application of advanced energy.conservation measures (ECMs). Striking a balance between information-gathering efforts and achieving sufficient model credibility.is crucial but often obscured by.ambiguities. To address this gap, we model and calibrate a test bed with different levels of information (LOI). Beginning with an initial model based on building geometry.(LOI 1), we progressively.introduce additional information, including nameplate information (LOI 2), envelope conductivity.(LOI 3), zone infiltration rate (LOI 4), AHU fan power (LOI 5), and HVAC data (LOI 6). The models are evaluated for accuracy. consistency. and the robustness of their predictions. Our results indicate that adding more information for calibration leads to improved data fit. However, this improvement is not uniform across all observed outputs due to identifiability.issues. Furthermore, for energy.saving analy.is, adding more information can significantly.affect the projected energy.savings by.up to two times. Nevertheless, for ECM ranking, models that did not meet ASHRAE 14 accuracy.thresholds can y.eld correct retrofit decisions. These findings underscore equifinality.in modeling complex building sy.tems. Clearly. predictive accuracy.is not sy.ony.ous with model credibility. Therefore, to balance efforts in information-gathering and model reliability. it is crucial to (1) determine the minimum level of information required for calibration compatible with its intended purpose and (2) calibrate models with information closely.linked to all outputs of interest, particularly.when simultaneous accuracy.for multiple outputs is necessary.

关键词： calibration building energy.simulation(BES) energy.conservation measure(ECM) level of information field measurements

Quantitative discrimination of surface adsorbed NO_(x) species on CeO_(2) via spectrophotometry.for SCR denitration investigation

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 Rare Earths 2024年第6期42卷 1066-1072,I0003页

作者： Songil Sin jiawei ji Lijun Cheng Zhiwen Gu chong Tan Kwangchol Ri Changjin Tang School of Environment Nanjing Normal UniversityNanjing210023China Department of Mining Engineering Kim Chaek University of TechnologyPyongyang999093Democratic People's Republic of Korea Laboratory.of Mesoscopic Chemistry.of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing20023China Institute of Chemical Engineering Hamhung University of Chemical EngineeringHamhungDemocratic People's Republic of Korea jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency.Response Technology Nanjing210023China

CeO_(2)-based cataly.ts are widely.investigated for selective cataly.ic reduction(SCR)of NO with *** of NO/O_(2) with CeO_(2) generally.produces two surface species,i.e.,nitrates and ***,the explicit quantification of these two species is still ***,we reported that spectrophotometry.characterization was effective in determining surface adsorbed NOx species on CeO_(2) by.measuring the corresponding ions(NO_(2)-and NO_(3)^(-))dissolved in aqueous *** results show that both nitrate(-NO_(3))and nitrite(-NO_(2))species can be quantitatively.evaluated and the accuracy.is verified by.calibrating with NOx-TPD *** transfer of adsorbed NOx from cataly.t surface to aqueous solution is confirmed and the dissolution process can be accelerated by.ultrasonic ***,useful information related to evolution of surface NOx species under various conditions(O_(2) treatment,different adsorption temperature and duration)and over different cataly.ts(Fe_(2)O_(3),MnO_(2) and MnOx—CeO_(2))are *** result of present study.demonstrates the potential of spectrophotometry.for quantitative discrimination of surface NOx species on CeO_(2) and other oxide-based materials,which is conducive to mechanism analy.is of SCR reaction.

关键词： Quantitative evaluation Spectrophotometry.analy.is Nitrate species Nitrite species CeO_(2)cataly.t NH_(3)-SCR

Insights on selective Pb adsorption via O 2p orbit in UiO-66 containing rich-zirconium vacancies

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第8期35卷 357-361页

作者： y.-Hang Li Shuai Gao Lu Zhang Hanchun Chen chong-Chen Wang Haodong ji Eco-environment and Resource Efficiency.Research Laboratory School of Environment and EnergyPeking University Shenzhen Graduate SchoolShenzhen 518055China Beijing Key.Laboratory.of Functional Materials for Building Structure and Environment Remediation School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044Chin

Herein,we constructed defective UiO-66 with rich Zr vacancy.structure model,in which the defective structure was verified by.various ***,the Pb adsorption experiments affirmed that defective UiO-66 could display.better adsorption and selective adsorption ability.than that of perfect *** results of partial density.of states(PDOS)and Mulliken charge population indicated that the blue shift of O 2p and Zr 4d orbit induced the electron rearrangement of atoms closed to the bonding sites,while the positive charge number of Zr atoms decreased than *** with the expansion of pore size,Pb atom was more inclined to transfer and bond with unsaturated coordination *** significantly.quantitative structure-activity.relationships(QSARs)demonstrated that selective capture of Pb instead of Zn,Cu,Cd and Hg display.d by.defective UiO-66 was determined jointly.by.bond strength,adsorption energy.and electron *** work provided some theoretical direction for the purpose of the fabrication of adsorbent and the investigation of mechanism.

关键词： Selective adsorption Heavy.metal Density.functional theory UiO-66 Zr vacancies

Fracture sealing performance of granular lost circulation materials at elevated temperature:A theoretical and coupled CFD-DEM simulation study

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第1期21卷 567-581页

作者： chong Lin Qi-Cong Xu Lie-Xiang Han Gao Li Hai He Hong-Ling Zhou ji-Ping She CCDC Drilling&Production Technology.Research Institute Guanghan618300SichuanChina State Key.Laboratory.of Oil and Gas Reservoir Geology.and Exploitation Southwest Petroleum UniversityChengdu610500SichuanChina College of Materials Science and Engineering Chongqing UniversityChongqing400044China State Key.Lab of Oil and Gas Reservoir Geology.and Exploitation(Chengdu University.of Technology. Chengdu610059SichuanChina College of Energy Chengdu University of TechnologyChengdu610059SichuanChina

Lost circulation is a common downhole problem of drilling in geothermal and high-temperature,high-pressure(HTHP)*** circulation material(LCM)is a regular preventive and remedial measure for lost ***,conventional LCMs seem ineffective in high-temperature *** may.be due to the changes in the mechanical properties of LCMs and their sealing performance under high-temperature *** understand how high temperature affects the fracture sealing performance of LCMs,we developed a coupled computational fluid dy.amics-discrete element method(CFD-DEM)model to simulate the behavior of granular LCMs in *** summarized the literature on the effects of high temperature on the mechanical properties of LCMs and the rheological properties of drilling *** conducted sensitivity.analy.es to investigate how changing LCM slurry.properties affected the fracture sealing efficiency.at increasing *** results show that high temperature reduces the size,strength,and friction coefficient of LCMs as well as the drilling fluid ***,softer,and less frictional LCM particles have lower bridging probability.and slower bridging *** particles tend to form dual-particle bridges rather than single-particle *** result in a deeper,tighter,but unstable sealing *** drilling fluid viscosity.leads to faster and shallower sealing zones.

关键词： Geothermal well drilling HTHP formationLost circulation material CFD-DEM Fracture sealing

Damage characteristics of fused silica under low-temporal coherence light

在线全文

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2024年第3期12卷 77-83页

作者： chong Shan Lingbao Kong Fujian Li y.ng Cui Lailin ji Quan Zheng Daxing Rao Ruijing He Xiaohui Zhao y.anan Zhao Zhan Sui Shanghai Engineering Research Center of Ultra-precision Optical Manufacturing School of Information Science and TechnologyFudan UniversityShanghaiChina Shanghai Institute of Laser Plasma China Academy of Engineering PhysicsShanghaiChina Key.Laboratory.of High Power Laser Materials Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina

The damage characteristics of fused silica were investigated under low-temporal coherence light(LTCL).It was found that the laser-induced damage threshold(LIDT)of fused silica for the LTCL was lower than that of the single longitudinal mode pulse laser,and for the LTCLs,the LIDTs decrease with the increasing of laser bandwidth,which is not consistent with the temporal spike *** is due to the nonlinear self-focusing effect and multi-pulse accumulation *** specific reasons were analy.ed based on theoretical simulation and experimental *** research work is helpful and of great significance for the construction of high-power LTCL devices.

关键词： laser-induced damage threshold low-temporal coherence light nonlinear self-focusing effect temporal spike

Intelligent diagnosis of retinal vein occlusion based on color fundus photographs

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology.English edition) 2024年第1期17卷 1-6页

作者： y.-Ke ji Rong-Rong Hua Sha Liu Cui-Juan Xie Shao-chong Zhang Wei-Hua y.ng Ey. Hospital Nanjing Medical UniversityNanjing 210000Jiangsu ProvinceChina College of Electronic Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210000Jiangsu ProvinceChina Shenzhen Ey. Institute Shenzhen Eye HospitalJinan UniversityShenzhen 518000Guangdong ProvinceChina

AIM:To develop an artificial intelligence(AI)diagnosis model based on deep learning(DL)algorithm to diagnose different ty.es of retinal vein occlusion(RVO)by.recognizing color fundus photographs(CFPs).METHODS:Totally.914 CFPs of healthy.people and patients with RVO were collected as experimental data sets,and used to train,verify.and test the diagnostic model of *** the images were divided into four categories[normal,central retinal vein occlusion(CRVO),branch retinal vein occlusion(BRVO),and macular retinal vein occlusion(MRVO)]by.three fundus disease *** Transformer was used to build the RVO diagnosis model,and different ty.es of RVO diagnosis experiments were *** model’s performance was compared to that of the ***:The accuracy.of the model in the diagnosis of normal,CRVO,BRVO,and MRVO reached 1.000,0.978,0.957,and 0.978;the specificity.reached 1.000,0.986,0.982,and 0.976;the sensitivity.reached 1.000,0.955,0.917,and 1.000;the F1-Sore reached 1.000,0.9550.943,and 0.887 *** addition,the area under curve of normal,CRVO,BRVO,and MRVO diagnosed by.the diagnostic model were 1.000,0.900,0.959 and 0.970,*** diagnostic results were highly.consistent with those of fundus disease experts,and the diagnostic performance was ***:The diagnostic model developed in this study.can well diagnose different ty.es of RVO,effectively.relieve the work pressure of clinicians,and provide help for the follow-up clinical diagnosis and treatment of RVO patients.

关键词： deep learning artificial intelligence Swin Transformer diagnostic model retinal vein occlusion color fundus photographs

The emerging tumor microbe microenvironment: From delineation to multidisciplinary.approach-based interventions

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

Acta Pharmaceutica Sinica B 2024年第4期14卷 1560-1591页

作者： y. Fu jia Li Weny.n Cai y.lan Huang Xinlong Liu Zhongy. Ma Zhongjie Tang Xufei Bian ji Zheng jiay.n jiang chong Li Medical Research Institute College of Pharmaceutical SciencesSouthwest UniversityChongqing 400715China Institute of Hepatobiliary.Surgery Southwest HospitalThird Military Medical University(Army Medical University)Chongqing 400038China Department of Urology Urologic Surgery CenterXinqiao HospitalThird Military Medical University(Army Medical University)Chongqing 400037China

Intratumoral microbiota has become research hotspots,and emerges as a non-negligent new component of tumor microenvironments(TME),due to its powerful infuence on tumor initiation,metas-tasis,immunosurveillance and prognosis despite in *** accumulations of microbes,and their related components and metabolites within tumor tissues,endow TME with additional pluralistic features which are distinct from the conventional ***,it's definitely.necessary.to comprehen-sively.delineate the sophisticated landscapes of tumor microbe microenvironment,as well as their func-tions and related underly.ng ***,in this review,we focused on the fields of tumor microbe microenvironment,including the heterogeneity.of intratumor microbiota in different ty.es of tu-mors,the controversial roles of intratumoral microbiota,the basic features of tumor microbe microenvi-ronment(i.e.,pathogen-associated molecular patterns(PAMPs),ty.ical microbial metabolites,autophagy.infammation,multi-faceted immunomodulation and chemoresistance),as well as the multi-disciplinary.approach-based intervention of tumor microbiome for cancer therapy.by.apply.ng wild-ty.e or engineered live microbes,microbiota metabolites,antibiotics,sy.thetic biology.and rationally.de-signed *** hope our work will provide valuable insight to deeply.understand the interplay.of cancer-immune-microbial,and facilitate the development of microbes-based tumor-specific treatments.

关键词： Tumor microbe microenvironment Microbiota metabolites Immunomodulation Chemoresistance Multidisciplinary.approach Genetically.engineered microbiota Autophagy Outer membrane vesicles

Implications of neutron skin measurements on Sky.me equations of state

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

Chinese Phy.ics C 2024年第6期48卷 155-161页

作者：管大为裴俊琛蒋崇基 State Key.Laboratory.of Nuclear Phy.ics and Technology School of PhysicsPeking UniversityBeijing 100871China Southern Center for Nuclear-Science Theory.SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China

The recent measurements of neutron skins via parity.violation in electron scattering have extracted an abnormally.thick neutron skin for 208 Pb,which has significant consequences in nuclear equation of state(EoS)and neutron star *** this study.we perform optimizations of extended Sky.me forces in a consistent manner by.including neutron skin thicknesses from PREX-Ⅱand CREX experiments and investigate nuclear EoSs and neutron stars in the GW170817 event By.vary.ng the fitting weights of neutron skins,several new Sky.me parameterizations are *** results show the competition in the fitting procedure to simultaneously.describe neutron skins,other properties of finite nuclei,and neutron star *** prospects of resolving neutron skin issues are also discussed.

关键词： neutron skin equation of state neutron star Sky.me force