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reviewing the Safe Shipping of Lithium-Ion and Sodium-Ion Cells:A Materials Chemistry Perspective

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Energy Material Advances 2021年第1期2021卷 1-12页

作者： Ashish rudola Christopher j.Wright jerry barker Faradion Limited The Innovation Centre217 PortobelloSheffield S14DPUK

High energy density lithium-ion(Li-ion)batteries are commonly used *** decades’worth of intense research has led to a good understanding on several aspects of such ***,the issue of their safe storage and transportation is still not widely understood from a materials chemistry *** international regulations require Li-ion cells to be shipped at 30%SOC(State of Charge)or *** this article,the reasons behind this requirement for shipping Li-ion batteries are firstly reviewed and then compared with those of the analogous and recently commercialized sodium-ion(Na-ion)*** such alkali-ion batteries,the safest state from their active materials viewpoint is at 0V or zero energy,and this should be their ideal state for storage/***,a“fully discharged”Li-ion cell used most commonly,composed of graphitebased anode on copper current collector,is not actually at 0V at its rated 0%SOC,contrary to what one might expect—the detailed mechanism behind the reason for this,namely,copper dissolution,and how it negatively affects cycling performance and cell safety,will be summarized *** will be shown that Na-ion cells,capable of using a lighter and cheaper aluminum current collector on the anode,can actually be safely discharged to 0V(true 0%SOC)and beyond,even to reverse polarity(negative voltages).It is anticipated that this article spurs further research on the 0V capability of Na-ion systems,with some suggestions for future studies provided.

关键词： cycling summarized alkali

Crystallization and impact history of a meteoritic sample of early lunar crust(NWA 3163)refined by atom probe geochronology

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Geoscience Frontiers 2019年第5期10卷 1841-1848页

作者： L.F. White D.E. Moser K.T. Tait B. Langelier I. barker j.r. Darling Centre for Applied Planetary Mineralogy Department of Natural HistoryRoyal Ontario MuseumTorontoOntarioM5S 2C6Canada Department of Earth Sciences University of TorontoTorontoOntarioM5S 3B1Canada Department of Earth Sciences University of Western OntarioLondonN6A 5B7Canada Canadian Centre for Electron Microscopy McMaster UniversityHamiltonOntarioCanada School of Earth and Environmental Science University of PortsmouthPortsmouthUK

Granulitic lunar meteorites offer rare insights into the timing and nature of igneous,metamorphic and impact processes in the lunar *** dating the different events recorded by these materials is very challenging,however,due to low trace element abundances (***,Nd,Lu,Hf),rare micrometerscale U-Th-bearing accessory minerals,and disturbed Ar-Ar systematics following a multi-stage history of shock and thermal *** we report on micro-baddeleyite grains in granulitic mafic breccia NWA 3163 for the first time and show that targeted microstructural analysis (electron backscatter diffraction) and nanoscale geochronology (atom probe tomography) can overcome these barriers to lunar chronology.A twinned (-90°/) baddeleyite domain yields a 232Th/208Pb age of 4328 ± 309 Ma,which overlaps with a robust secondary ion mass spectrometry (SIMS) 207Pb/206Pb age of 4308± 18.6 Ma and is interpreted here as the crystallization age for the igneous protolith of NWA 3163.A second microstructural domain,rprinting baddeleyite and yields a Th-Pb age of 2175± 143 Ma,interpreted as dating the last substantial impact event to affect the *** finding demonstrates the potential of combining microstructural characterization with nanoscale geochronology when resolving complex P-T-t histories in planetary materials,here yielding the oldest measured crystallization age for components of lunar granulite NWA 3163 and placing further constraints on the formation and evolution of lunar crust.

关键词： Baddeleyite U-Th-Pb isotopes EBSD Atom probe tomography Geochronology Northwest Africa 3163

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Direct ink writing of polycaprolactone/polyethylene oxide based 3D constructs

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Progress in Natural Science:Materials International 2021年第2期31卷 180-191页

作者： Bin Zhang Se Hun Chung Susan barker Duncan Craig roger j.Narayan jie Huang Department of Mechanical Engineering University College London Medway School of Pharmacy Universities of Greenwich and Kent School of Pharmacy University College London joint Department of Biomedical Engineering University of North Carolina and North Carolina State University

There has been increasing interest over recent years in the application of three-dimensional(3 D) printing technologies in the biomedical field. One such method is Direct Ink Writing(DIW); this approach has the potential advantage of allowing room-temperature deposition of materials, presented as an ink, to build complex architectures. DIW offers the ability to process biomaterials containing temperature-sensitive components. Due to the fabrication principles of DIW, there are specific rheological requirements that the ink must exhibit for the 3 D construction. For this reason, hydrogel-based liquid feed stocks have been the focal point of ink development. As a consequence, studies based on inks comprising hydrophobic biomaterials, which are insoluble in water and hence unsuited to the hydrogel approach, have been *** this study, we investigate novel inks that utilize polycaprolactone(PCL), a hydrophobic polymer, as the primary constituent by dissolving the polymer in solvent systems based on dichloromethane(DCM) and acetone(ACE). Moreover, polyethylene oxide(PEO) was incorporated into the PCL systems in order to extend the range of hydrophilicity of the systems. The rheological properties of the inks were investigated as a function of polymer composition and solvent system. Woodpile constructs of PCL and PCL/PEO were fabricated using DIW method and were assessed by a series of material characterisation. The type of solvent system had a noticeable impact on the ink rheology, which ultimately affected the surface properties. The incorporation of PEO particularly enhanced the roughness and wettability of the constructs. Our results support the use of DIW as a new means to process hydrophobic polymers for biomedical applications.

关键词： Direct ink writing Polycaprolactone Polyethylene oxide Ink rheology Material characterisation 3D construct

Evidence that all Sorsby's fundus dystrophy mutations cause TIMP3 dimerization resulting in impaired inhibition of VEGFr2

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Genes & Diseases 2023年第1期10卷 45-47页

作者： Fatimah A.Alsaffar Ahmed H.Mujamammi Mohammed S.K.Aldughaim Martin j.H.Nicklin Michael D.barker Department of Oncology&Metabolism University of Sheffield Medical SchoolSheffield S102RXUK Department of Infection Immunity&Cardiovascular Disease University of Sheffield Medical SchoolSheffield S102RXUK

Tissue inhibitor of metalloproteinases 3(TIMP3)regulates turnover of the extracellular matrix(ECM)and is also a potent inhibitor of the vascular endothelial growth factor receptor 2(VEGFr2),a key mediator of *** in TIMP3 give rise to Sorsby's fundus dystrophy(SFD),a dominantly inherited degenerative disease of the retina that leads to blindness,usually in middle age.

关键词： TIMP3 VEGFr2 impaired

redox-driven shifts in soil microbial community structure in the drawdown zone after construction of the Three Gorges Dam

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Soil Ecology Letters 2019年第3期1卷 114-125页

作者： Shuling Wang Sarwee j.Faeflen Alan L.Wright Xia Zhu-barker Xianjun jiang College of resources and Environment Southwest UniversityChongqing 400715China Indian river research&Education Center University of FloridaFort PierceFL 34945USA Department of Land Air and Water ResourcesUniversity of California DavisCA 95616USA

Soil redox is a critical environmental factor shaping the microbial community structure and ultimately alters the nutrient ***,the response of soil microbial community structure to prolonged or repeated redox fluctuations is not yet *** study the dynamic effects of prolonged redox disturbances to the soil microbial community structure,soil samples experiencing 8,5 and 0 alternating oxic-anoxic cycles within approximately 6 months each year were collected and the microbial community structure were evaluated using phospholipid fatty acid analysis(PLFA)*** redox disturbances had significant effects on soil physiochemical properties and soil microbial community *** relative abundance of straight chain saturated PLFAs,cyclopropyl,and terminal-and mid-branched chain saturated PLFAs increased due to prolonged redox disturbances,but there was a consistent decrease in linear monounsaturated PLFAs and polyunsaturated PLFAs in the fluctuating *** redox disturbances had a negative impact on the total PLFA content(a proxy for biomass).Both the fluctuating zone(8-cycle and 5-cycle plots)and the never flooded zone(0-cycle plots)were dominated by Gram-positive bacteria and a low content of fungi,actinomycetes and *** fungi and protozoa abundance decreased significantly with an increase in the occurrence of alternating flooding-dry events,suggesting that the prolonged redox disturbance leads to high stress on the fungi and protozoa ***,total organic matter(TOC)and C:N ratio,environmental factors that can be influenced by recurring redox fluctuations,also influenced the microbial community structure.

关键词： Water fluctuation zone redox disturbance Microbial community structure Phospholipid fatty acids(PLFA) Three Gorges reservoir

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九十年代及以后港口发展的预测

中国港口 1992年第5期 26-28页

作者：包文俊 barker,j

Age at diagnosis of type 2 diabetes and cardiovascular risk factor profile:A pooled analysis

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作者：金·巴克 Kim·barker编剧

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World journal of Diabetes 2022年第3期13卷 260-271页

作者： Mary M barker Francesco Zaccardi Emer M Brady Gaurav S Gulsin Andrew P Hall joseph Henson Zin ZinHtike Kamlesh Khunti Gerald P McCann Emma L redman David r Webb Emma G Wilmot Tom Yates jian Yeo Melanie j Davies jack A Sargeant Diabetes research Centre University of LeicesterLeicester General HospitalLeicester LE54PWUnited Kingdom Department of Cardiovascular Sciences Glenfield HospitalUniversity of LeicesterLeicester LE39QPUnited Kingdom The Hanning Sleep Laboratory University Hospitals of Leicester NHS TrustUniversity of LeicesterLeicester LE54PWUnited Kingdom National Institute for Health research Leicester Biomedical Research CentreLeicester LE54PWUnited Kingdom Leicester Diabetes Centre University Hospitals of Leicester NHS TrustLeicester LE54PWUnited Kingdom National Institute for Health research Applied Research Collaboration East MidlandsLeicester LE54PWUnited Kingdom Department of Diabetes University Hospitals of Derby and Burton NHS Foundation TrustDerby DE223NEUnited Kingdom

BACKGrOUND The diagnosis of type 2 diabetes(T2D)in younger adults,an increasingly common public health issue,is associated with a higher risk of cardiovascular complications and mortality,which may be due to a more adverse cardiovascular risk profile in individuals diagnosed at a younger *** To investigate the association between age at diagnosis and the cardiovascular risk profile in adults with *** A pooled dataset was used,comprised of data from five previous studies of adults with T2D,including 1409 participants of whom 196 were diagnosed with T2D under the age of 40 *** and blood biomarker measurements included body weight,body mass index(BMI),waist circumference,body fat percentage,glycaemic control(HbA1c),lipid profile and blood *** and multivariable linear regression models,adjusted for diabetes duration,sex,ethnicity and smoking status,were used to investigate the association between age at diagnosis and each cardiovascular risk *** A higher proportion of participants diagnosed with T2D under the age of 40 were female,current smokers and treated with glucose-lowering medications,compared to participants diagnosed later in *** diagnosed with T2D under the age of 40 also had higher body weight,BMI,waist circumference and body fat percentage,in addition to a more adverse lipid profile,compared to participants diagnosed at an older *** results showed that each one year reduction in age at diagnosis was significantly associated with 0.67 kg higher body weight[95%confidence interval(CI):0.52-0.82 kg],0.18 kg/m^(2) higher BMI(95%CI:0.10-0.25)and 0.32 cm higher waist circumference(95%CI:0.14-0.49),after adjustment for duration of diabetes and other *** age at diagnosis was also significantly associated with higher HbA1c,total cholesterol,low-density lipoprotein cholesterol and *** The diagnosis of T2D earlier in life is associated with a worse cardi

关键词： Type 2 diabetes mellitus Early-onset adult type 2 diabetes Age of onset Cardiovascular risk Young adults Glycaemic control Obesity

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影响埋弧电炉最佳经济效果的电气因素

铁合金 1992年第6期23卷 45-50,12页

作者： A.DEWAAL I.j.barker M.S.rENNIE j.KLOPPEr B.S.GrOENEVELD 李岩南非矿物技术研究中心Mintek

从现有工厂不须花费大量金钱而增加经济效益,在经济困难时期是一项有吸引力的目标。本文论述从埋弧电炉操作方面达到这一目标的各条途经。如果在操作约束条件之内炉内产量最大可以得到最大的经济效益,产品单位成本最低。本文分析了可以... 详细信息

从现有工厂不须花费大量金钱而增加经济效益,在经济困难时期是一项有吸引力的目标。本文论述从埋弧电炉操作方面达到这一目标的各条途经。如果在操作约束条件之内炉内产量最大可以得到最大的经济效益,产品单位成本最低。本文分析了可以用来实现炉了取得最佳经济效益的各项技术。这些操作约束条件的本来性质标明在描述炉子电气性能的特性曲线上,详细分析了这些制约条件并提出了克服它们的方法。

关键词：埋弧电炉电气特性最佳经济效果

维普期刊数据库