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Progress in twin roll casting of magnesium alloys: A review

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Journal of Magnesium and Alloys 2021年第2期9卷 362-391页

作者： Amjad Javaid frank czerwinski CanmetMATERIALS Natural Resources CanadaHamiltonOntarioL8P 0A5Canada

Twin roll casting was commercialized for a strip production from ferrous and non-ferrous alloys in the 1950 s;however,its application to magnesium has proven difficult and still creates major *** report describes global efforts in expanding manufacturing capabilities of magnesium sheet through twin roll casting path,offering many benefits,including a reduction in number of processing steps and energy *** addition to hardware design,alloy transformation during processing,product microstructure and properties,examples of successful solutions along with present technology and knowledge limitations are discussed.A particular attention is paid to developments at Canmet MATERIALS,having the only in North America pilot scale twin roll casting facility,devoted to *** are described that aim at design of new magnesium alloys,which could take advantage of unique processing conditions during twin roll casting and contribute to the overall progress in magnesium sheet manufacturing.

关键词： Twin roll casting Magnesium alloys Solidification Magnesium sheet

Effect of hot rolling on microstructure and properties of the ZEK100 alloy

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Journal of Magnesium and Alloys 2019年第1期7卷 27-37页

作者： Amjad Javaid frank czerwinski CanmetMATERIALS 183 Longwood Road SouthHamiltonOntario L8P 0A5Canada

Attempts to expand manufacturing capabilities of magnesium-based sheet materials are *** as-cast ZEK100(Mg-1.2Zn-0.35Zr-0.17Nd,in wt%)magnesium alloy was subjected to hot rolling at temperatures from 350℃to 450℃using the laboratory 50 ton reversible mill with preheated rolls to manufacture the 1.5-1.7 mm thick *** rolling temperature affected the sheet properties and an increase in the rolling temperature from 250 to 450℃caused reduction of tensile strength from 257 to 228 MPa ac-companied by a reduction in tensile yield stress from 237 to 185 *** the same time,the alloy elongation increased from 17 to 21%.For the same rolling temperature range,the compressive strength reduced from 418 to 351 *** post-rolling annealing at 450℃led to reduction of both tensile and compressive properties with the largest changes corresponding to the rolling temperature of 350°*** correlation between the alloy grain size after rolling and the sheet properties was established where a reduction in grain size was accompanied by an increase of both the tensile/compressive strength and yield *** on Hall-Petch relationship and an average grain size the correlation developed in this study may be used as the prediction model for properties of the hot rolled magnesium *** results are discussed in terms of recent developments in magnesium sheet alloys and the vital role played in this process by rare earth elements.

关键词： Magnesium alloys Hot deformation Microstructure Rare earths Sheet rolling

Decoding complexity: the need to enhance precision and streamline spatial understanding in neuroscience

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Neural Regeneration Research 2025年第3期20卷 801-802页

作者： Sameehan Mahajani Armita Salahi Brenda Gonzalez Charlotte Nelson frank Hsiung Biology&Applications Division NodexusSan JoseCAUSA

Neuroscience is the ultimate frontier in our quest for a comprehensive understanding of human behavior. Since its launch in 2009, the Human Connectome Project has emerged as a pioneering force, making heroic strides i... 详细信息

关键词： behavior frontier dating

Degradation of gaseous hydrocarbons in aerated stirred bioreactors inoculated with Rhodococcus erythropolis:Effect of the carbon source and SIFT-MS method development

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Journal of Environmental Sciences 2025年第1期147卷 268-281页

作者： Paula Alejandra Lamprea Pineda Kristof Demeestere Allan Augusto Alvarado-Alvarado frank Devlieghere Nico Boon Herman Van Langenhove Christophe Walgraeve Research group EnVOC Department of Green Chemistry and TechnologyFaculty of Bioscience EngineeringGhent UniversityCoupure Links 6539000Ghent Belgium Research group FMFP Department of Food TechnologySafety and HealthFaculty of Bioscience EngineeringGhent UniversityCoupure Links 6539000Ghent Belgium Center for Microbial Ecology and Technology-CMET Department of BiotechnologyFaculty of Bioscience EngineeringGhent UniversityCoupure Links 6539000Ghent Belgium

The study of microbial hydrocarbons removal is of great importance for the development of future bioremediation *** this study,we evaluated the removal of a gaseous mixture containing toluene,m-xylene,ethylbenzene,cyclohexane,butane,pentane,hexane and heptane in aerated stirred bioreactors inoculated with Rhodococcus erythropolis and operated under non-sterile *** the real-time measurement of hydrocarbons,a novel systematic approachwas implemented using Selected-Ion Flow TubeMass Spectrometry(SIFTMS).The effect of the carbon source(~9.5 ppmv)on(i)the bioreactors’performance(BR1:dosed with only cyclohexane as a single hydrocarbon versus BR2:dosed with a mixture of the 8 hydrocarbons)and(ii)the evolution of microbial communities over time were *** results showed that cyclohexane reached a maximum removal efficiency(RE)of 53%±4%in *** BR2,almost complete removal of toluene,m-xylene and ethylbenzene,being the most water-soluble and easy-to-degrade carbon sources,was *** below 32%were obtained for the remaining *** exposing the microbial consortium to only the five most recalcitrant hydrocarbons,REs between 45%±5%and 98%±1%were *** addition,we observed that airborne microorganisms populated the bioreactors and that the type of carbon source influenced the microbial communities *** abundance of species belonging to the genus Rhodococcus was below 10%in all bioreactors at the end of the *** work provides fundamental insights to understand the complex behavior of gaseous hydrocarbon mixtures in bioreactors,along with a systematic approach for the development of SIFT-MS methods.

关键词： Hydrocarbons SIFT-MS Rhodococcus erythropolis Biodegradation Bioreactors

Perception of healthcare professionals on patient safety culture and associated factors:a qualitative study using MAXQDA software

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Frontiers of Nursing 2025年第1期12卷 123-132页

作者： Aileen J.Abraham Pushpanjali Krishnappa frank Federico Department of Allied Health Sciences Faculty of Life and Allied Health SciencesRamaiah University of Applied SciencesBangaloreKarnataka 560056India Department of Public Health Dentistry Ramaiah University of Applied SciencesBangaloreKarnataka 560056India Senior Patient Safety Expert Quality Improvement SpecialistInstitute for Healthcare ImprovementCambridgeMA 02138USA

Objective: Patient safety culture is a concern in every healthcare organization, therefore, the healthcare leadership is encountering issues related to patient safety across the globe. In India, there is limited research and information about patient safety culture among healthcare stakeholders and there is relatively little qualitative research available that captures the factors of patient safety culture. Hence, this study aims to explore the perception of healthcare professionals on patient safety culture. Methods: An exploratory qualitative study design was adopted in a tertiary care hospital. Structured focus group discussion (FGD) (n = 4) among healthcare professionals and two in-depth interview focus groups were audio-recorded and transcribed. Two coders reviewed transcripts using the editing approach and organized codes into themes. The data were analyzed through MAXQDA 2022 (VERBI Software GmbH, Berlin, Germany), qualitative data analysis software, and descriptive analysis technique. The main codes and themes were generated using inductive and deductive method and smart coding was done. Results: Overall, there were 190 unique mentions of codes related to patient safety culture from 4 FGDs. They were categorized into 6 major themes and subcodes were derived via smart coding using the MAXQDA software. “Resources and constraints” was the most prominent code, followed by management support, manpower shortage, burnout, and lack of personnel commitment. Conclusions: The study highlights significant gaps in patient safety culture within the healthcare setting, with resource constraints, management support, and manpower shortages emerging as critical challenges. Burnout and lack of personnel commitment further exacerbate these issues, underscoring the need for targeted interventions.

关键词： focus group discussion healthcare stakeholders patient safety culture qualitative study healthcare leadership

Epidemiology of liver diseases:global disease burden and forecasted research trends

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Science China(Life Sciences) 2025年第2期68卷 541-557页

作者： Jia Xiao Fei Wang Yuan Yuan Jinhang Gao Lu Xiao Chao Yan Feifei Guo Jiajun Zhong Zhaodi Che Wei Li Tian Lan frank Tacke Vijay H.Shah Cui Li Hua Wang Erdan Dong Department of Gastroenterology Qingdao Central HospitalUniversity of Health and Rehabilitation SciencesQingdao 266071China Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment Zhuhai Hospital Affiliated with Jinan UniversityZhuhai 510630China Division of Gastroenterology Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen 518107China School of Biological Sciences Jinan UniversityGuangzhou 519070China Aier Institute of Ophthalmology Central South UniversityChangsha 410015China Lab of Gastroenterology and Hepatology West China HospitalSichuan UniversityChengdu 610041China Clinical Medicine Research Institute and Department of Metabolic and Bariatric Surgery the First Affiliated Hospital of Jinan UniversityGuangzhou 510630China Faculty of Pharmaceutical Sciences Toho UniversityChiba Tokyo 143-8540Japan Department of Hepatology and Gastroenterology Charité-Universitätsmedizin BerlinCampus Virchow-Klinikum and Campus CharitéMitteBerlin 13353Germany Division of Gastroenterology and Hepatology Mayo ClinicRochester MN 55905USA Department of Health Sciences National Natural Science Foundation of ChinaBeijing 100085China Department of Oncology The First Affiliated HospitalInstitute for Liver Diseases of Anhui Medical UniversityHefei 230032China Inflammation and Immune Mediated Diseases Laboratory of Anhui Province Anhui Medical UniversityHefei 230032China Research Center forCardiopulmonary Rehabilitation Universityof Health and Rehabilitation Sciences Qingdao Hospital(Qingdao Municipal Hospital)Schoolof Health andLifeSciencesUniversityof Health and Rehabilitation SciencesQingdao 266071China Department of Cardiology and Institute of Vascular Medicine Peking University Third HospitalState Key Laboratory of Vascular Homeostasis and RemodelingPeking UniversityBeijing 100191China

We assessed the global incidence,mortality,and disability-adjusted life years(DALYs)associated with various liver diseases,including alcohol-related liver disease(ALD),hepatitis B/C virus infections(HBV or HCV),liver cancer,metabolic dysfunction-associated steatotic liver disease(MASLD),and other chronic liver diseases,from the 2019 Global Burden of Disease ***,we analyzed the global trends in hepatology research and drug *** 2000 to 2019,prevalence rates increased for ALD,MASLD and other liver diseases,while they decreased for HBV,HCV,and liver *** with a high socio-demographic index(SDI)exhibited the lowest mortality rates and *** burden of liver diseases varied due to factors like sex and *** nine representative countries,MASLD,along with hepatobiliary cancer,showed highest increase in funding in hepatology ***,the major research categories in hepatology papers from 2000 to 2019 were cancer,pathobiology,and *** United States(U.S.)was at the forefront of hepatology research,with China gradually increasing its influence over *** worldwide are increasingly focusing on studying the communication between the liver and other organs,while underestimating the research on ***,HCV,and MASLD were the primary diseases targeted for therapeutic development in clinical ***,the proportion of new drugs approved for the treatment of liver diseases was relatively low among all newly approved drugs in the U.S.,China,Japan,and the European ***,there were no approved drug for the treatment of ALD in the world.

关键词： liver disease disease burden GBD estimate research trend drug development

Fermionic Critical Fluctuations: Potential Driver of Strange Metallicity and Violation of the Wiedemann-Franz Law in YbRh_(2)Si_(2)

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Chinese Physics Letters 2024年第12期41卷 155-158页

作者： frank Steglich Max Planck Institute for Chemical Physics of Solids(MPI CPfS) 01187 DresdenGermany Center for Correlated Matter(CCM)and School of Physics Zhejiang UniversityHangzhou 310058China

Results of combined thermal and electrical transport measurements through the magnetic field-induced quantum critical point(QCP)in the heavy-fermion compound YbRh_(2)Si_(2) were revisited to explore the relationship between the strange-metal behavior observed in electrical and electronic thermal resistivities and the violation of the Wiedemann-Franz(WF)law in the zero-temperature limit.A new type of inelastic scattering center for the charge and heat carriers was detected,attributed to small-to-large Fermi surface fluctuations operating near the Kondo-destroying *** fermionic quantum critical fluctuations are considered the primary driver of the strange-metal behavior and the violation of the WF law.

关键词： Fermi quantum critical

From basic properties to the Mott design of correlated delafossites

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npj Computational Materials 2021年第1期7卷 1084-1100页

作者： frank Lechermann European XFEL SchenefeldGermany Center for Computational Quantum Physics Flatiron InstituteNew YorkNYUSA

The natural-heterostructure concept realized in delafossites highlights these layered *** metallic,band-or Mott-insulating character may be associated with individual layers,inter-layer coupling still plays a decisive *** review the correlated electronic structure of PdCoO_(2),PdCrO_(2),and AgCrO_(2),showing that layer-entangled electronic states can deviate from standard classifications of interacting *** finding opens up possibilities for materials design in a subtle Mott-critical *** Hidden-Mott physics,correlation-induced semimetallicity,or Dirac/flat-band dispersions in a Mott background are emerging *** with achievements in the experimental preparation,this inaugurates an exciting research field in the arena of correlated materials.

关键词： materials metallic showing

Ultra-broadband access enabled by fiber optics(Invited Paper)

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Chinese Optics Letters 2016年第12期14卷 17-20页

作者： frank Effenberger Futurewei Technologies Bridgewater NJ 08807 USA

The advent of low loss optical fiber has consistently led us to the ultra-broadband era, where bandwidths exceeding 1 Gb/s are commonplace. This Review reviews the early history of fiber access, pointing out some of the lasting design choices and signature features of fiber access. The progress of the various passive optical network technologies is also reviewed, and some views regarding the future trends of fiber in the access.

关键词： broadband consistently optics pointing signature lasting exceeding deployment bandwidth enabled