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Journal of Materials Science & Technology 2020年第17期52卷 226-234页

作者： Bintao Wu Zhijun Qiu Zengxi Pan kristin carpenter Tong Wang Donghong Ding Stephen Van Duin Huijun Li key Laboratory of Ningxia for Photovoltaic Material Ningxia UniversityYinchuan750021China School of Mechanical MaterialsMechatronic and Biomedical EngineeringUniversity of WollongongWollongongNSW2522Australia School of Mechatronic Engineering Foshan UniversityFoshan528000China

realizing improved strength in composite metallic materials remains a challenge using conventional welding and joining systems due to the generation and development of brittle intermetallic compounds caused by complex thermal profiles during ***,wire arc additive manufacturing(WAAM)process was used to fabricate a steel-nickel structural component,whose average tensile strength of 634 MPa significantly exceeded that of feedstock materials(steel,537 MPa and nickel,455 MPa),which has not been reported *** as-fabricated sample exhibited hierarchically structural heterogeneity due to the interweaving deposition *** improved mechanical response during tensile testing was due to the inter-locking microstructure forming a strong bond at the interface and solid solutions strengthening from the intermixing of the Fe and Ni increased the interface strength,beyond the sum of *** research offers a new route for producing high-quality steel-nickel dissimilar structures and widens the design opportunities of monolithic components,with site-specific properties,for specific structural or functional applications.

关键词： Wire arc additive manufacturing(WAAM) Steel-nickel bimetallic-component Interweaving deposition Material properties

Hydrogen diffusion in clinopyroxene: dehydration experiments

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Science China Earth Sciences 2000年第6期43卷 561-568页

作者：夏群科陈道公 S.carpenter 支霞臣王汝成程昊 Department of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China Department of Geosciences The Pennsylvania State University PA 16082 USA State key Laboratory of Mineral Deposits Nanjing University Nanjing 210093 China

Hydrogen diffusivity of one clinopyroxene megacryst from Nüshan, eastern China parallel to [001]* crystallographic direction was measured by high-temperature sequential dehydration experiments at 950üC and 850üC, which was (6.5ü1.5)×10-12(m2/s) and (1.8×0.7)×10-12(m2/s) respectively. From these results and the previous published data, it seems that the correlation between hydrogen diffusivity and Fe content suggested by Dyar et al. (1996) possibly does not exist. Clinopyroxene megacrysts from alkali basalts appear to be possible reliable samples for the study of the water evolution and hydrogen isotope compositions of the upper mantle.

关键词： clinopyroxene hydrogen diffusion dehydration.

Apparent Formation Factor for Leachate-Saturated Waste and Sediments: Examples from the USA and China

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Journal of China University of Geosciences 2009年第3期20卷 606-617页

作者： Philip J carpenter 丁爱中程莉蓉刘普新楚福录 Department of Geology and Environmental Geosciences Northern Illinois UniversityDeKalb IL 60115 USA College of Water Sciences Beijing Normal University Environmental Protection Bureau of Maoming Hebei Institute of Geophysics

The formation factor relates bulk.r.sistivity to pore fluid resistivity in porous materials. Understanding the formation factor is essential in using electrical and electromagnetic methods to monitor ieachate accumulations and movements both within and around landfills. Specifically, the formation factor allows leachate resistivity, the degree of saturation, and, possibly, even the hydraulic conductivity of the waste to be estimated from non-invasive surface measurements. In this study, apparent formation factors are computed for three landfills with different types of waste as well as sediments contaminated by landfill leachate. resistivity soundings at the closed Mallard North landfill in suburban Chicago （Illinois, USA） mapped leachate surfaces that were confirmed by monitoring wells. The resistivity of leachate-saturated waste from resistivity sounding inversions was then divided by the leachate resistivity values measured in-situ to compute apparent formation factors （Fa） ranging from 1.6 to 4.9. A global Fa of 3.0±1.9 was computed for the entire monitored portion of this landfill. At a nearby mixed laboratory waste landfill, a 2D inverted resistivity section was used to compute an Fa of 2.9. Finally, a distinctly different Fa value of 10.6±2.8 was computed for leachate-saturated retorted oil shale wastes north of Maoming （茂名）, Guangdong （广东） Province, China. Shallow aquifers in the Laohuling （老虎岭） Formation near this landfill are polluted by acidic leachate containing heavy metals and organic compounds. The Fa for aquifers containing contaminated groundwater fall in the same range as aquifers with normal groundwater, 1.7-3.9. However, models from inverted sounding curves over these contaminated areas exhibit unusually low resistivity layers, which may be diagnostic of contamination.

关键词： landfall leachate formation factor Archie's law Maoming.

Predictors of clinical outcomes after non-operative management of symptomatic full-thickness rotator cuff tears

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World Journal of Orthopedics 2021年第4期12卷 223-233页

作者： Christopher Bush Joel J Gagnier James carpenter Asheesh Bedi Bruce Miller Department of Orthopaedic Surgery University of MichiganAnn ArborMI 48106United States

BACk.r.UND Previous studies have shown that non-surgical management can be an effective treatment strategy for many patients with rotator cuff *** the prevalence of rotator cuff disease,few studies have examined the patient and tear related factors that predict outcomes of nonsurgical management in this cohort of *** To identify factors that are associated with changes in patient reported outcomes over time in individuals with full-thickness rotator cuff tears treated without *** A cohort of 59 patients who underwent non-surgical management of full thickness rotator cuff tears with a minimum of 1-year follow-up were identified from our institutional *** demographics,comorbidities and tear characteristics were collected at initial *** measures were collected at baseline and at each clinical follow-up,which included Western Ontario rotator Cuff(WOrC)index,American Shoulder and Elbow Surgeons score,Visual Analog Scale for pain and Single Assessment Numerical ***-and univariate regression analyses were used to determine the impact of each patient and tear related variable on final WOrC scores and change in WOrC scores throughout the *** In this non-surgical cohort,all patient-reported outcome measures significantly improved compared to baseline at 1 and 2-year *** was no significant difference in outcomes between 1 and 2 *** average improvement surpassed the published minimal clinically important differences values for WOrC,American Shoulder and Elbow Surgeons,Visual Analog Scale pain and Single Assessment Numerical Evaluation *** analysis identified female gender(β=-19.88,P=0.003),smoking(β=-29.98,P=0.014)and significant subscapularis fatty infiltration(β=-15.35,P=0.024)as predictors of less favorable WOrC scores at 1 year,and female gender(β=-19.09,P=0.015)alone as a predictor of lower WOrC scores at 2 *** with symptom duration greater than 1

关键词： rotator cuff tear Conservative treatment Patient reported outcome measures Shoulder injuries Shoulder pain

Effect of coronary artery dynamics on the wall shear stress vector field topological skeleton in fluid–structure interaction analyses

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International Journal of Mechanical System Dynamics 2023年第1期3卷 48-57页

作者： Harry J.carpenter Mergen H.Ghayesh Anthony C.Zander Peter J.Psaltis School of Electrical and Mechanical Engineering University of AdelaideAdelaideSouth AustraliaAustralia Vascular research Centre Lifelong Health ThemeSouth Australian Health and Medical Research Institute(SAHMRI)AdelaideSouth AustraliaAustralia Adelaide Medical School University of AdelaideAdelaideSouth AustraliaAustralia Department of Cardiology Central Adelaide Local Health NetworkAdelaideSouth AustraliaAustralia

In this paper,we investigate the impact of coronary artery dynamics on the wall shear stress(WSS)vector field topology by comparing fluid–structure interaction(FSI)and computational fluid dynamics(CFD)*** one of the most common causes of death globally,coronary artery disease(CAD)is a significant economic burden;however,novel approaches are still needed to improve our ability to predict its *** can include the unique dynamical factors present in the coronary *** investigate the impact of these dynamical factors,we study an idealized artery model with sequential *** transient simulations made use of the hyperelastic artery and lipid constitutive equations,non‐Newtonian blood viscosity,and the characteristic out‐of‐phase pressure and velocity distribution of the left anterior descending coronary *** compare changes to established metrics of time‐averaged WSS(TAWSS)and the oscillatory shear index(OSI)to changes in the emerging WSS divergence,calculated here in a modified version to handle the deforming mesh of FSI *** suggest that the motion of the artery can impact downstream patterns in both divergence and *** magnitude is also decreased by up to 57%due to motion in some *** divergence patterns varied most significantly between simulations over the systolic period,the time of the largest *** investigation highlights that coronary dynamics could impact mark.r. of potential CAD progression and warrants further detailed investigations in more diverse geometries and patient cases.

关键词： computational fluid dynamics divergence fluid–structure interaction topology wall shear stress

The strain seismograms of P- and S-waves of a local event recorded by four-gauge borehole strainmeter

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Earthquake Science 2015年第3期28卷 209-214页

作者： Zehua Qiu Shunliang Chi Zhenming Wang Seth carpenter Lei Tang Yanping Guo Guang Yang Institute of Crustal Dynamics China Earthquake Administration Earthquake Administration of Hebi kentucky Geological Survey University of Kentucky Guza Seismic Station Earthquake Administration of Sichuan Province

At a sampling rate of 100 samples per second,the YrY-4 four-gauge borehole strainmeters（FGBS） are capable of recording transient strains caused by seismic waves such as P and S waves or strain seismograms. At such a high sampling rate, data from the YrY-4 strainmeters demonstrate fairly satisfactory self-consistency. The strain tensor seismograms demonstrate the senses of motion of P waves, that is, the type of seismic wave travels in the direction of the maximum normal strain change. The observed strain patterns of S waves significantly differ from those of P waves and should contain information about the source mechanism. Spectrum analysis shows that the strain seismograms are consistent with conventional broadband seismograms from the same site.

关键词： Four-gauge borehole strainmeter(FGBS) Strain seismogram P-wave S-wave Self-consistency Spectrum analysis

CHECkING CONSISTENCY IN INFOrMATION MODELS BY USING CONSTrAINT PrOGrAMMING

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Transactions of Nanjing University of Aeronautics and Astronautics 2005年第1期22卷 30-37页

作者：方捷 kAHN Hilary J carpenter Andy 曼彻斯特大学计算机学院曼彻斯特M139PL英国

This paper addresses the issue of checking consistency in information models. A method based on constraint programming is proposed for identifying inconsistency or proving consistency in information models. The system described here checks information models written in the ISO standard information modelling language EXPrESS. EXPrESS is part of the ISO STEP standard used in the manufacturing and process industries. This paper describes the checking procedure, including EXPrESS model formalization, constraint satisfaction problem (CSP) derivation from the formalized model and satisfaction checking of the derived CSPs. This paper shows a new domain in which constraint programming can be exploited as model verification and validation.

关键词： EXPrESS model constraint programming model verification

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Al的能量吸收边缘和电子粒子数布居分析

物理学报 1999年第1期48卷 140-147页

作者：田淑芬樊锡君于洛平 J.S.BOW r.W.carpenter S.H.LIN 山东师范大学现代教育技术研究所山东师范大学物理系

给出了Ａｌ电子能量损失谱吸收边缘的理论解释、电子粒子数布居分析及不同散射分截面计算结果的比较．能量吸收边缘被归一化为每原子每电子伏的散射截面．对散射截面的贡献来自三个方面．第一是来自应用推广的Ｈüｃｋｅｌ带模型得到的... 详细信息

给出了Ａｌ电子能量损失谱吸收边缘的理论解释、电子粒子数布居分析及不同散射分截面计算结果的比较．能量吸收边缘被归一化为每原子每电子伏的散射截面．对散射截面的贡献来自三个方面．第一是来自应用推广的Ｈüｃｋｅｌ带模型得到的电子从内层向价层的跃迁；第二是来自利用电子气模型得到的电离末态；第三是来自激发原子附近的原子产生的外行平面波弹性反向散射．

关键词：吸收边缘电子粒子数铝电子能量谱布居分析

Sclerostin antibody improves alveolar bone quality in the Hyp mouse model of X-linked hypophosphatemia

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International Journal of Oral Science 2023年第4期15卷 640-648页

作者： kelsey A.carpenter Delia O.Alkhatib Bryan A.Dulion Elizabeth Guirado Shreya Patel Yinghua Chen Anne George ryan D.ross Department of Anatomy&Cell Biology Rush University Medical CenterChicagoILUSA Department of Oral Biology The University of Illinois at ChicagoChicagoILUSA Department of Orthopedic Surgery Rush University Medical CenterChicagoILUSA Department of Microbial Pathogens and Immunity Rush University Medical CenterChicagoILUSA

X-linked hypophosphatemia (XLH) is a rare disease of elevated fibroblast growth factor 23 (FGF23) production that leads tohypophosphatemia and impaired mineralization of bone and teeth. The clinical manifestations of XLH include a high prevalence ofdental abscesses and periodontal disease, likely driven by poorly formed structures of the dentoalveolar complex, including thealveolar bone, cementum, dentin, and periodontal ligament. Our previous studies have demonstrated that sclerostin antibody (SclAb) treatment improves phosphate homeostasis, and increases long bone mass, strength, and mineralization in the Hyp mousemodel of XLH. In the current study, we investigated whether Scl-Ab impacts the dentoalveolar structures of Hyp mice. Male andfemale wild-type and Hyp littermates were injected with 25 mg·kg−1 of vehicle or Scl-Ab twice weekly beginning at 12 weeks of ageand euthanized at 20 weeks of age. Scl-Ab increased alveolar bone mass in both male and female mice and alveolar tissue mineraldensity in the male mice. The positive effects of Scl-Ab were consistent with an increase in the fraction of active(nonphosphorylated) β-catenin, dentin matrix protein 1 (DMP1) and osteopontin stained alveolar osteocytes. Scl-Ab had no effecton the mass and mineralization of dentin, enamel, acellular or cellular cementum. There was a nonsignificant trend towardincreased periodontal ligament (PDL) attachment fraction within the Hyp mice. Additional PDL fiber structural parameters were notaffected by Scl-Ab. The current study demonstrates that Scl-Ab can improve alveolar bone in adult Hyp mice.

关键词： alveolar impaired elevated

Effects of arbuscular mycorrhizal fungi,biochar,selenium,silica gel,and sulfur on arsenic uptake and biomass growth in Pisum sativum L.

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Emerging Contaminants 2020年第1期6卷 312-322页

作者： Mohammad Zahangeer Alam Md.Anamul Hoque Golam Jalal Ahammed Lynne carpenter-Boggs Department of Environmental Science Faculty of AgricultureBangabandhu Sheikh Mujibur Rahman Agricultural University(BSMRAU)Gazipur1706Bangladesh Department of Soil Science Bangladesh Agricultural University(BAU)MymensinghBangladesh College of Forestry Henan University of Science and TechnologyLuoyang471023PR China Department of Crop and Soil Sciences Washington State University(WSU)Pullman WA99164-6420USA

Arsenic(As)is carcinogenic and highly toxic to *** accumulate As when grown in field soils irrigated with As-contaminated *** accumulation of As in roots,shoots,and grains of pea varieties can negatively affect human health via the food *** research is focused on the biomass growth and alleviation of As accumulation in roots,shoots,and grains of pea varieties in high As soil amended with arbuscular mycorrhizal fungi(AMF),biochar(BC),selenium(Se),silica gel(Si-gel),and sulfur(S).root,shoot,and grain masses were found higher in pea grown in As soil amended with AMF,Se,Si-gel,and *** with rice husk and sawdust BC was found less effective to increase growth parameters in Bangladesh Agricultural research Institute(BArI)Motor *** in grains was reduced by 77%,71%,and 69%by AMF,Se,and Si-gel,*** is recommended that soil amendments with AMF,S,and Se have great potential for improving biomass production of pea grown in As-contaminated soil,as well as reducing As transfer to humans through the food chains.

关键词： Arsenic Pea Food chain AMF Food safety Metal