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Conversion coatings of Mg-alloy AZ91D using trihexyl(tetradecyl) phosphonium bis(trifluoromethanesulfonyl)amide ionic liquid

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Science China Chemistry 2012年第8期55卷 1598-1607页

作者： HOWLETT P. C. GRAMET S. LIN j. EFTHIMIADIS j. CHEN X. B. BIRBILIS N. FORSYTH M. ARC Centre of Excellence for Electromaterials Science Institute for Frontier Materials Deakin Univerxlty Burwood Campus Burwood Victoria 3125 Australia CAST Cooperative Research Centre Department of Materials Engineering Monash University Melbourne Victoria 3800 Australia

This work reveals the performance of a trihexyl(tetradecyl)phosphonium bis(trifluoromethanesulfonyl)amide ([P6,6,6,14][NTf2]) ionic liquid (IL) conversion coating upon AZ91D. Such conversion coatings represent a novel avenue for chromate replacement. An optimization of coating performance was pursued by careful alloy pretreatment to generate a surface on which the coating performs best, as the AZ91 substrate is distinctly different from pure or dilute Mg alloys. The results reveal that a functional conversion coating can be achieved, retarding anodic dissolution kinetics, causing a significant decrease in corrosion rate. The coating efficacy is closely tied to the pretreatment performed, which dictates both the microstructural and electrochemical heterogeneity of the surface. The resulting coatings were found to contain MgxFx and phosphonium cation related components, the proportions of which were dependent on the pretreatment.

关键词： AZ91D corrosion conversion coating ionic liquid pretreatment

Schwann-like adipose-derived stem cells as a promising therapeutic tool for peripheral nerve regeneration:effects of cholinergic stimulation

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Neural Regeneration Research 2021年第6期16卷 1218-1220页

作者： Roberta Piovesana Alessandro Faroni Ada Maria Tata Adam j.Reid Department of Biology and Biotechnologies“Charles Darwin” SapienzaUniversity of RomeRomeItaly Blond McIndoe Laboratories Division of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of BiologyMedicine and HealthThe University of ManchesterManchester Academic Health Science CentreManchesterUK Research Centre of Neurobiology“Daniel Bovet” SapienzaUniversity of RomeRomeItaly Department of Plastic Surgery&Burns Wythenshawe HospitalManchester University NHS Foundation TrustManchester Academic Health Science CentreManchesterUK

Schwann-like adipose-derived stem cells and nerve injury:Peripheral nerve injuries(PNIs)are a common clinical problem usually as a consequence of *** optimal surgical management,PNI has a lifelong impact on function and wellbeing of the *** peripheral nervous system(PNS)has regenerative capability,in contrast to the central nervous system(CNS),and is dependent on the plasticity of the peripheral glia,Schwann cells(SCs).Despite this regenerative capability,PNI recovery of sensorial and motor function is always incomplete causing pain,cold intolerance,paralysis and impairment of activities of daily living.

关键词： stimulation injuries paralysis

Effect of different intensities of physical activity on cardiometabolic markers and vascular and cardiac function in adult rats fed with a high-fat high-carbohydrate diet

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journal of Sport and Health Science 2018年第1期7卷 109-119页

作者： Romeo B.Batacan jr Mitch j.Duncan Vincent j.Dalbo Geraldine L.Buitrago Andrew S.Fenning School of Medical and Applied Sciences Central Queensland University Centre for Physical Activity Studies Central Queensland University School of Medicine & Public Health Priority Research Centre for Physical Activity and Nutrition Faculty of Health and MedicineThe University of Newcastle University Drive Clinical Biochemistry Laboratory Central Queensland University Centre for Biodiscovery and Molecular Development of Therapeutics Australian Institute of Tropical Health and MedicineJames Cook University

Background: Physical activity(PA) and diet are 2 lifestyle factors that affect cardiometabolic risk. However, data on how a high-fat highcarbohydrate(HFHC) diet influences the effect of different intensities of PA on cardiometabolic health and cardiovascular function in a controlled setting are yet to be fully established. This study investigated the effect of sedentary behavior, light-intensity training(LIT), and high-intensity interval training(HIIT) on cardiometabolic markers and vascular and cardiac function in HFHC-fed adult ***: Twelve-week-old Wistar rats were randomly allocated to 4 groups(12 rats/group): control(CTL), sedentary(SED), LIT, and *** indices, glucose and lipid control, inflammatory and oxidative stress markers, vascular reactivity, and cardiac electrophysiology of the experimental groups were examined after 12 weeks of HFHC-diet feeding and PA ***: The SED group had slower cardiac conduction(p = 0.0426) and greater thoracic aortic contractile responses(p showed improved cardiac conduction compared with the SED group(p = 0.0003), and the HIIT group showed decreased mesenteric artery contractile responses compared with all other groups and improved endothelium-dependent mesenteric artery relaxation compared with the LIT group(both p < 0.05). The LIT and HIIT groups had lower visceral(p = 0.0057 for LIT, p = 0.0120 for HIIT)and epididymal fat(p < 0.0001 for LIT, p = 0.0002 for HIIT) compared with the CTL ***: LIT induced positive adaptations on fat accumulation and cardiac conduction, and HIIT induced a positive effect on fat accumulation,mesenteric artery contraction, and endothelium-dependent relaxation. No other differences were observed between groups. These findings suggest that few positive health effects can be achieved through LIT and HIIT when consuming a chronic and sustained HFHC diet.

关键词： High-intensity interval training Inflammation Light-intensity training Metabolic syndrome Oxidative stress Sedentary behavior Western diet

Preliminary age-based life history characteristics of the dogtooth tuna,Gymnosarda unicolor(Ruppell,1838),in the southwest Pacific Ocean

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Aquaculture and Fisheries 2023年第3期8卷 323-331页

作者： David j.Welch Adam K.Smith Kyne Krusic-Golub Sandra Erdmann Stephen j.Newman C_(2)O Fisheries PO Box 3041CairnsQueensland4870Australia Centre for Sustainable Tropical Fisheries and Aquaculture College of Science and EngineeringJames Cook UniversityTownsville4811Australia Reef Ecologic TownsvilleQueensland4811Australia Fish Ageing Services Pty.Ltd. QueenscliffVictoria3225Australia Western Australian Fisheries and Marine Research Laboratories Department of Primary Industries and Regional DevelopmentGovernment of Western AustraliaNorth BeachWestern Australia6020Australia

Dogtooth tuna,Gymnosarda unicolor were sampled off the east coast of Australia(southwest Pacific Ocean)from 2007 to *** were determined by examining thin transverse sections of their sagittal otoliths and were based on counts of alternating opaque and translucent zones(annual growth increments).Growth was rapid during the first year of life,after which growth in length was much *** of the constrained von Bertalanffy growth function(fork length-at-age)were L∞=1164.77(mm,FL)and K=0.44 year^(-1).Preliminary estimates of longevity indicate a maximum observed age of at least 20 *** was a high degree of variation in the observed length and age of sexual maturity for *** this variation,the size at 50%maturity for female *** estimated in this study was 713 mm FL(sh *** life history characteristics of *** overall,indicate that this species may be somewhat resilient to ***,reports of localised depletions,in association with heavy targeting by sports fishers,low effective population sizes and patchy recruitment indicate that this species is particularly vulnerable to overfishing.

关键词： Otoliths Age Life history Pacific ocean Diet Fisheries management

无创左室压力-应变环技术评估不同心率甲亢患者左室心肌功能

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武汉大学学报（医学版） 2024年第7期45卷 825-830,855页

作者：王末凤甘玲张加琪尹家保锦州医科大学湖北医药学院附属襄阳市第一人民医院研究生联合培养基地超声影像科湖北襄阳441000 湖北医药学院附属襄阳市第一人民医院超声影像科湖北襄阳441000

目的:研究无创左室压力-应变环(LV-PSL)技术评估不同心率甲亢患者心肌功能的临床应用价值。方法:根据纳入及排除标准在湖北医药学院附属襄阳市第一人民医院收集71名初次确诊且未经治疗的甲亢患者。依据是否心动过速分为A组[心率(HR)100... 详细信息

目的:研究无创左室压力-应变环(LV-PSL)技术评估不同心率甲亢患者心肌功能的临床应用价值。方法:根据纳入及排除标准在湖北医药学院附属襄阳市第一人民医院收集71名初次确诊且未经治疗的甲亢患者。依据是否心动过速分为A组[心率(HR)100次/min,n=33),对照组纳入健康志愿者(n=50)。比较各组参数的差异;探讨HR与心肌做功参数[整体做功指数(GWI)、整体有用功(GCW)、整体无用功(GWW)、整体做功效率(GWE)]的相关性。绘制受试者工作特征(ROC)曲线,分析左室整体纵向应变(GLS)与心肌做功参数评估甲亢患者左室心肌功能的效能。结果:相较于对照组,A组和B组的收缩压(SBP)、HR、游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)、病程、主动脉舒张末期内径(AOEDD)、GWW均增高,而促甲状腺素(Tsh)、GLS、GWI、GCW、GWE均降低,差异具有统计学意义(P<0.05)。相较于A组,B组的SBP、HR、FT3、FT4、病程、GWW增高,而GWE降低,差异具有统计学意义(P<0.05)。相关性分析显示,HR与GLS、GWI、GCW、GWE呈负相关,与GWW呈正相关。GLS、GWI、GCW、GWW及GWE评估甲亢患者左室功能的曲线下面积分别为:0.754、0.795、0.728、0.836及0.850。其中,GWW与GWE评估效能较高。结论:无创LV-PSL技术可早期定量评估不同心率甲亢患者左心室功能,可为临床早期预警、早期干预提供参考价值。

关键词：甲亢左室压力-应变环心率心肌功能

Welcome the new Members of the journal of Infrared and Millimeter Waves Editorial and Advisory Board

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红外与毫米波学报 2016年第5期35卷 515-516页

作者： M.H.ZHANG H.shEN j.H.CHU

It is our great pleasure to announce that four international renowned scholars *** Tredicucci,*** ***,*** Zhang,and *** have accepted our invitations to join the journal of Infrared and Millimeter Waves Editorial and Advisory *** Editorial Board includes experts from all major fields within the infrared,millimeter and terahertz waves to cover the scope of the journal.

关键词：期刊《红外与毫米波学报》编辑工作发行工作

Mechanical characterization and induced crystallization in nanocomposites of thermoplastics and carbon nanotubes

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npj Computational Materials 2020年第1期6卷 413-423页

作者： Eduardo R.Cruz-Chú Gonzalo j.Villegas-Rodríguez Tobias jäger Luca Valentini Nicola M.Pugno Konstantinos Gkagkas Frauke Gräter Laboratorios de Investigación y Desarrollo Facultad de Ciencias y FilosofíaUniversidad Peruana Cayetano HerediaLimaPeru Molecular Biomechanics Group Heidelberg Institute for Theoretical StudiesHeidelbergGermany Civil and Environmental Engineering Department University of Perugia and INSTM Research UnitTerniItaly Laboratory of Bio-inspired BionicNanoMeta Materials MechanicsUniversity of TrentoTrentoItaly School of Engineering and Materials Science Queen Mary University of LondonLondonUK Advanced Technology Group Toyota Motor EuropeZaventemBelgium Interdisciplinary Center for Scientific Computing(IWR) Heidelberg UniversityHeidelbergGermany

Nanocomposites built from polymers and carbon nanotubes(CNTs)are a promising class of *** modeling can provide nanoscale views of the polymer–CNT interface,which are much needed to foster the manufacturing and development of such ***,setting up periodic nanocomposite models is a challenging *** we propose a computational workflow based on Molecular Dynamics simulations.

关键词： materials composites crystallization

Additive manufacturing of Sm-Fe-N magnets

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journal of Rare Earths 2019年第10期37卷 1078-1082页

作者： j.A.B.Engerroff A.B.Baldissera M.D.Magalhaes P.H.Lamarao P.A.P.Wendhausen C.H.Ahrens j.M.Mascheroni Department of Mechanical Engineering Federal University of Santa CatarinaFlorianopolisBrazil AlkimatTecnologia Sao JoseBrazil

Isotropic Sm-Fe-N bonded magnets were obtained by additive manufacturing(AM). The technique used was the so-called powder bed fusion(PBF) and the feedstock was composed of a polymeric binder(PA-12) and Sm-Fe-N flake particles(Nitroquench-P). The AM set-up equipment uses a computer-controlled CO2 laser beam to melt the binder and constructs magnets layer-by-layer. In order to develop this study, a cylinder with 10 mm of both height and diameter was selected as the shape of samples. Specimens were analyzed by scanning electron microscopy(SEM) and X-ray diffraction(XRD). Magnetic properties were measured in a hysteresis graph. XRD results indicate that there is no degradation of the main magnetic phase(SmFe7 Nx). In the AM component, porous regions were identified on SEM micrographs, as well as magnetic particles and polymeric binder. Remanence values(Br) as great as 0.3 T are achieved, while intrinsic coercivities remain in the range from 616 up to 642 kA/m. An additional isostatic compression of the parts results in greater remanence, which is directly proportional to the density increase. Coercivity is also sensitive to the porosity decrease, probably due to a better interlocking of particles. Current results indicate AM as a promising route for near net-shape manufacturing of Sm-Fe-N permanent magnets, a market niche yet to be widely explored.

关键词： Sm-Fe-N Permanent magnets Additive manufacturing Rare earths

AT1 receptor downregulation:A mechanism for improving glucose homeostasis

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World journal of Diabetes 2023年第3期14卷 170-178页

作者： Diana L Lopez Oscar E Casillas Hiram j jaramillo Tatiana Romero-Garcia j.Gustavo Vazquez-jimenez Department of Internal Medicine General Hospital of MexicaliMexicali 21000Baja CaliforniaMexico Faculty of Medicine Autonomous University of Baja CaliforniaMexicali 21000Baja CaliforniaMexico Faculty of Sports Autonomous University of Baja CaliforniaMexicali 21289Baja CaliforniaMexico

There is a pathophysiological correlation between arterial hypertension and diabetes mellitus, established since the pre-diabetic state in the entity known as insulin resistance. It is known that high concentrations of angiotensin-Ⅱ enable chronic activation of the AT1 receptor, promoting sustained vasoconstriction and the consequent development of high blood pressure. Furthermore, the chronic activation of the AT1 receptor has been associated with the development of insulin resistance. From a molecular outlook, the AT1 receptor signaling pathway can activate the jNK kinase. Once activated, this kinase can block the insulin signaling pathway, favoring the resistance to this hormone. In accordance with the previously mentioned mechanisms, the negative regulation of the AT1receptor could have beneficial effects in treating metabolic syndrome and type 2diabetes mellitus. This review explains the clinical correlation of the metabolic response that diabetic patients present when receiving negatively regulatory drugs of the AT1 receptor.

关键词： Type 2 diabetes mellitus High blood pressure Insulin receptor Insulin signaling pathway AT1 receptor Angiotensin II signaling pathway