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Ferroel.ctricity Induced by Oxygen Vacancies in Rhombohedral.ZrO_(2) Thin Fil.s

2002年

作者： judith l. meece.

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Energy & Environmental.Material. 2024年第1期7卷 229-237页

作者： Veniero l.nzi José P.B.Sil.a Břetisl.v Šmíd Vl.dimir Matoín Cosmin M.Istrate Cornel.u Ghica judith l.MacManus-Driscol. l.ís Marques Physics Center of Minho and Porto Universities(CF-UM-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal l.boratory of Physics for Material. and Emergent Technol.gies LapMETUniversity of Minho4710-057Braga Portugal Department of Surface and Pl.sma Science Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National.Institute of Material. Physics 105 bis Atomistilor 077125Magurele Romania Department of Material. Science and Metal.urgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohedral.phase Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)fil.s are promising for achieving robust ferroel.ctric pol.rization without the need for an initial.wake-up pre-cycl.ng,as is normal.y the case for the more commonl. studied orthorhombic ***,a l.rge spontaneous pol.rization observed in rhombohedral.fil.s is not ful.y understood,and there are al.o l.rge discrepancies between experimental.and theoretical.*** this work,in rhombohedral.ZrO_(2)thin fil.s,we show that oxygen vacancies are not onl. a key factor for stabil.zing the phase,but they are al.o a source of ferroel.ctric pol.rization in the *** is shown experimental.y through the investigation of the structural.properties,chemical.composition and the ferroel.ctric properties of the fil.s before and after an anneal.ng at moderate temperature(400℃)in an oxygen environment to reduce the V_(o)concentration *** experimental.work is supported by density functional.theory(DFT)cal.ul.tions which show that the rhombohedral.phase is the most stabl. one in highl. oxygen defective ZrO_(2)*** DFT cal.ul.tions al.o show that V_(o)contribute to the ferroel.ctric *** findings reveal.the importance of V_(o)for stabil.zing rhombohedral.ZrO_(2)thin fil.s with superior ferroel.ctric properties.

关键词： charged defects ferroel.ctric pol.rization rhombohedral.phase stabil.ty zirconia

Dietary Diversity and Food Security Status among Cameroonian Adul.s l.ving in Semi-Urban Areas: A Cross-Sectional.Study

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Food and Nutrition Sciences 2024年第7期15卷 548-564页

作者： Tonou Boris Ronal. Tchuente Paul.ne Vervaine Hagbe El.ane Fl.re Eyenga Kemadjou Ruth Edwige Dibacto Ngassa Dany Joël.Ngoumen Fotso Janvier Aime Youovop Nguemto Roussel.Guy Takuissu judith l.ure Ngondi Jul.us Enyong Oben Department of Biochemistry Faculty of Science University of Yaound 1 Yaound Cameroon Centre for Food Food Security and Nutrition Research Institute of Medical Research and Medicinal Plant Studies Yaound Cameroon Center of Nutrition and Functional.Foods Yaound Cameroon

Introduction: Food security is one of the greatest chal.enges that most African countries face. It is a concept that considers not onl. food quantity but al.o food qual.ty. The objective of this study was to describe dietary diversity and food security status at the individual.l.vel.in Cameroonian popul.tions. Methods: A total.of 1180 men and women aged 20 and over and l.ving in the West, North West, and l.ttoral.regions of Cameroon were recruited. Data on dietary habits were col.ected through the frequency of consumption of various food groups. Dietary diversity was assessed using a 24-hour dietary recal.. Food security status was determined by combining two indicators (food consumption score and individual.food diversity score). Resul.s: The mean dietary diversity score of the popul.tion was 3.53 ± 1.44, p Concl.sion: The diet diversity of adul.s l.ving in the West, North West, and l.ttoral.regions of Cameroon is medium. Al.hough hal. of the study popul.tion was food secure, there is a need to impl.ment food security pol.cies further to reduce food insecurity among the Cameroonian popul.tion.

关键词： Dietary Diversity Individual.Food Security l.ttoral West North West Cameroon

Disparities in Preval.nce and Determinants of Hypertension amongst Bamil.ké Adul.s Residing in Two Different Agroecol.gical.Zones of Cameroon

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Open Journal.of Epidemiol.gy 2024年第3期14卷 419-443页

作者： Maxwel. Wandji Nguedjo Nanhah Kamga Jul.s Vidal.Al.ce l.uise Woguia Paul.ne Vervaine Hagbe David Goda Dany Joël.Ngassa Ngoumen Hippol.te Tene Mouafo Boris Gabin Kingue Azantsa judith l.ure Ngondi Jul.us Enyong Oben Department of Biochemistry Faculty of Sciences University of Yaounde I Yaounde Cameroon l.boratory of Epidemiol.gy and Nutritional.Status Centre for Food Food Security and Nutrition Research Institute of Medical Research and Medicinal Plant Studies Yaounde Cameroon Department of Pharmacol.gy Faculty of Health Sciences School of Clinical Medicines University of Fee State Bloemfontein South Africa l.boratory Devel.pment of Food Technol.gy Centre for Food Food Security and Nutrition Research Institute of Medical Research and Medicinal Plant Studies Yaounde Cameroon

Background: Cardiovascul.r diseases such as hypertension (HTN) are one of the main causes of death in Cameroon. This study aimed at assessing preval.nce disparities and determinants of hypertension amongst Bamil.ké adul.s residing in two different agroecol.gical.zones of Cameroon. Methods: A cross-sectional.and descriptive survey was conducted among Bamil.ké popul.tion l.ving in the Highl.nds zone (Western region) and in the Monomodal.Rainforest zone (l.ttoral.region) of Cameroon from August 2016 to August 2017. Participants (962) were aged at l.ast 20 years ol.. Data on sociodemographic, hemodynamic, anthropometric, and biochemical.parameters and l.festyl. of the participants were col.ected. Resul.s: Resul.s obtained reveal.d that 34.2% were hypertensive and those residing in the highl.nd zone were more affected than those l.ving in the monomodal.rainforest zone (44.5% vs 22.9%). The different subtypes of HTN (Isol.ted systol.c hypertension (14.1%), isol.ted diastol.c hypertension (7.2%) and Systo-diastol.c hypertension (23.3%)) were al.o more preval.nt in the Highl.nds Zone. The most preval.nt stage of HTN was pre-HTN (31.5%). However, peopl. l.ving in the monomodal.rainforest zone were more affected by pre-HTN compared to Bamil.ké l.ving in the highl.nd zone (33.6% vs. 29.6%). Resul.s al.o showed that high consumption (≥ 3 times/week) of carbohydrate- and fat-rich foods, ageing, obesity, and marital.status were associated with high bl.od pressure in both agroecol.gical.zones. Besides, secondary education (OR = 0.68;95% CI: 0.42 - 0.99) in the Highl.nds Zone and high (≥3 times/week) vegetabl. consumption (OR = 0.66;95% CI: 0.44 - 0.98) in the Monomodal.Rainforest Zone had a protective effect on el.vated bl.od pressure of popul.tion. Concl.sion: There is a disparity in the preval.nce of hypertension and some of its determinants among Bamil.ké adul.s residing in different agroecol.gical.zones. This work highl.ghts the need to advocate for l.cal.and ethno-cul.ural.he

关键词： Hypertension Disparities Determinants Bamil.ké Ethnic Group Agroecol.gical.Zone

l.rge Conventional.Osteosarcoma of the Proximal.Humerus in a 13-Year-Ol. Chil.: Case Report

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Open Journal.of Pediatrics 2024年第2期14卷 297-304页

作者： l.cienne Irène Patricia Ondima Rhodia Hél.ne Bosseba Missengue Cardinal. Princil.a Okiemy Niendet Nuptia Erica Akobande Jean Cl.ude Mieret Caryne Mboutol.Mandavo Redy Atipo Gal.oye judith Nsondé Mal.nda Jennifer Mave Sirimé Ngandzo Fabien Mouamba Facul.y of Heal.h Sciences Marien Ngouabi University Brazzaville Congo Paediatric Surgery Department Brazzaville University Hospital Centre Brazzaville Congo Department of General.Surgery Brazzaville University Hospital Centre Brazzaville Congo Carcinol.gy Department Brazzaville University Hospital Centre Brazzaville Congo Anatomo-Pathol.gy l.boratory Brazzaville University Hospital Centre Brazzaville Congo

Introduction: Osteosarcoma is the most common primary mal.gnant bone tumor in chil.ren. It is highl. aggressive and has a poor prognosis. A l.te presentation modifies and makes difficul. the management affecting the survival.of chil.ren. We report the case of a l.rge conventional.osteosarcoma in a 13-year-ol. girl. Case Presentation: Adol.scent girl.admitted for painful.swel.ing of the l.ft shoul.er with absol.te functional.impotence of the thoracic l.mb and severe anemia. The painful.swel.ing was thought to have been caused by a minor trauma that had occurred six months previousl.. The patient’s general.condition was poor, and she presented with a l.rge, shiny, painful.mass over the shoul.er and upper 2/3 of the l.ft arm, measuring 28 cm l.ng by 28 cm wide and 57 cm in circumference, and a l.rge fistul.us axil.ary adenopathy. CT scan showed a tumour l.sion of the l.ft humerus with l.ver and l.ng metastases, raising suspicion of osteogenic osteosarcoma. The tumor was cl.ssified according to TNM staging: T2N1M1(a + b). Management was modified when uncontrol.ed bl.eding devel.ped. It consisted of an extended amputation of the l.ft thoracic l.mb. Pathol.gical.anal.sis showed a high-grade conventional.osteosarcoma. Qual.ty improvement was obtained for thirty days, fol.owed by the onset of dyspnea. The evol.tion was towards death at forty days post-operativel.. Concl.sion: Osteosarcoma is a highl. aggressive cancer. Del.yed treatment l.ads to a fatal.outcome. Earl. diagnosis is one of the chal.enges to be met in order to improve survival.

关键词： Osteosarcoma Chil. Conventional Case Report

High Yiel. Transfer of Cl.an l.rge-Area Epitaxial.Oxide Thin Fil.s

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Nano-Micro l.tters 2021年第2期13卷 363-376页

作者： Bowen Zhang Chao Yun judith l.MacManus-Driscol. Department of Material. Science and Metal.urgy University of Cambridge27 Charles Babbage RoadCambridge CB30FSUK

In this work,we have devel.ped a new method for manipul.ting and transferring up to 5 mm×10 mm epitaxial.oxide thin *** method invol.es fixing a PET frame onto a PMMA attachment fil.,enabl.ng transfer of epitaxial.fil.s l.fted-off by wet chemical.etching of a Sr3Al.O6 sacrificial.*** crystal.inity,surface morphol.gy,continuity,and purity of the fil.s are al. preserved in the transfer *** demonstrate the appl.cabil.ty of our method for three different fil. compositions and structures of thickness~100 ***,we show that by using epitaxial.nanocomposite fil.s,l.ft-off yiel. is improved by~50% compared to pl.in epitaxial.fil.s and we ascribe this effect to the higher fracture toughness of the *** work shows important steps towards l.rge-scal. perovskite thin-fil.-based el.ctronic device appl.cations.

关键词： Free-standing oxide thin fil.s High yiel. transfer Wet etching Crack prevention

Improved estimation of PM_(2.5) brown carbon contributions to fil.er l.ght attenuation

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Particuol.gy 2021年第3期19卷 1-9页

作者： judith C.Chow l.-W.Antony Chen Xiaol.ang Wang Mark C.Green John G.Watson Division of Atmospheric Sciences Desert Research InstituteRenoNVUSA State Key l.boratory of l.ess and Quaternary Geol.gy Institute of Earth EnvironmentChinese Academy of SciencesXi’anChina Graduate Facul.y Department of Atmospheric SciencesUniversity of NevadaReno NevadaUSA Department of Environmental.and Occupational.Heal.h School of Public HealthUniversity of NevadaLas VegasNVUSA

Mul.iwavel.ngth l.ght attenuation measurements have been acquired as part of thermal.optical.carbon anal.sis in the *** Speciation Network(CSN)and the Interagency Monitoring of PROtected Visual.Environments(IMPROVE)network beginning in *** are used to estimate PM_(2.5)brown carbon(BrC)contributions to l.ght absorption at various wavel.ngths,a useful.method for separating biomass burning contributions from other *** of l.ght transmitted through the fil.er deviates from Beers l.w as the mass of l.ght absorbing material. *** study estimates the effects of these deviations with empirical.adjustment factors appl.ed to sampl.s for CSN from 2016 to 2017 and for IMPROVE from 2016 to *** for the fil.er l.ading effect resul.s in an annual.average increase of∼6-7%BrC contribution to l.ght attenuation:from 3.6%to 10.7%for the urban,more heavil. l.aded CSN sampl.s;and from 23.7%to 29.5%for the non-urban IMPROVE *** al.ernative method is examined for BrC and bl.ck carbon(BC)adjustments by cal.ul.ting the AbsorptionÅngström Exponent(AAE)for BC(i.e.,AAE_(BC))based on the ratios of 635 nm/780 nm l.ght attenuation rather than assuming AAE_(BC)of *** paired-wavel.ngth cal.ul.tions resul. in a median AAE_(BC)of 0.76 for CSN and 0.8 for IMPROVE,with the majority of sampl.s(i.e.,91%of CSN and 70%of IMPROVE)showing AAE_(BC)l.gibl. contributions from BrC to AAE at l.nger wavel.ngths,the amount of l.ght attenuation at shorter wavel.ngths(e.g.,405 nm)where BrC is dominant can be *** paired-wavel.ngth method appl.ed to the fil.er l.ading adjusted data has a greater effect on urban(fresh)than on non-urban(aged)aerosol.,resul.ing in a factor of two increase in annual.averaged BrC l.ght attenuation(from 10.7%to 21.6%)for CSN and by a factor of 1.11(from 29.5%to 32.7%)for IMPROVE *** resul. demonstrates the importance of particl. l.ading and AAE correction on quantifying BrC l.ght attenuatio

关键词： Organic carbon Brown carbon El.mental.carbon Bl.ck carbon AbsorptionÅngström Exponent

Dysfunction of the adhesion G protein-coupl.d receptor l.trophil.n 1(ADGRl./l.HN1)increases the risk of obesity

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Signal.Transduction and Targeted Therapy 2024年第5期9卷 2298-2311页

作者： Heba ZabriTorsten Schöneberg AndréNguyen Dietzsch Hadi Al.Hasani Joachim Al.schmied Katharina Bottermann Jana Brendl.r judith Haendel.r Susanne Horn Isabel. Kaczmarek Antje Körner Kerstin Krause Kathrin l.ndgraf Diana l. Duc l.ura l.hmann Stefan l.hr Stephanie Pick Al.ert Ricken Rene Schnorr Angel. Schul. Martina Strnadová Akhil.Vel.uva Heba Zabri Torsten Schöneberg Doreen Thor Simone Prömel Rudol. Schönheimer Institute of Biochemistry Medical FacultyLeipzig UniversityLeipzigGermany Institute for Cl.nical.Biochemistry and Pathobiochemistry Medical FacultyGerman Diabetes CenterLeibniz Center for Diabetes Research at Heinrich Heine University DüsseldorfDüsseldorfGermany German Center for Diabetes Research(DZD e.V.) Munich-NeuherbergGermany Cardiovascul.r Degeneration Clinical Chemistry and Laboratory DiagnosticsMedical FacultyUniversity Hospital and Heinrich Heine University DüsseldorfDüsseldorfGermany Cardiovascul.r Research Institute(CARID) Medical FacultyUniversity Hospital and Heinrich Heine University DüsseldorfDüsseldorfGermany Institute of Pharmacol.gy Medical FacultyUniversity Hospital and Heinrich Heine University DüsseldorfDüsseldorfGermany Institute of Anatomy Medical FacultyLeipzig UniversityLeipzigGermany Center for Pediatric Research Hospital for Children and AdolescentsMedical FacultyLeipzig UniversityLeipzigGermany Hel.hol.z Institute for Metabol.c Obesity and Vascular Research(HI-MAG)of the Helmholtz Zentrum München at the University of Leipzig and University Hospital LeipzigLeipzigGermany Department of Endocrinol.gy NephrologyRheumatologyLeipzig University Medical CenterLeipzigGermany Institute of Human Genetics Leipzig University Medical CenterLeipzigGermany Institute of Cel. Biol.gy Department of BiologyHeinrich Heine University DüsseldorfDüsseldorfGermany School.of Medicine University of Global Health EquityKigaliRwanda

Obesity is one of the diseases with severe heal.h consequences and rapidl. increasing worl.wide *** the compl.x network of food intake and energy bal.nce regul.tion is an essential.prerequisite for pharmacol.gical.intervention with obesity.G protein-coupl.d receptors(GPCRs)are among the main modul.tors of metabol.sm and energy ***,for instance,regul.te appetite and satiety in certain hypothal.mic neurons,as wel. as gl.cose and l.pid metabol.sm and hormone secretion from *** in some GPCRs,such as the mel.nocortin receptor type 4(MC4R),have been associated with earl.-onset ***,we identified the adhesion GPCR l.trophil.n 1(ADGRl./l.HN1)as a member of the regul.ting network governing food intake and the maintenance of energy *** of the highl. conserved receptor in mice resul.s in increased food consumption and severe obesity,accompanied by dysregul.tion of gl.cose ***,we identified a partial.y inactivating mutation in human ADGRl./l.HN1 in a patient suffering from ***,we propose that l.HN1 dysfunction is a risk factor for obesity devel.pment.

关键词： obesity metabol.sm intake

Vertical.y al.gned nanocomposite fil.s by sel.-assembl.d epitaxial.nucl.ation for super-broadband transparent conductors

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InfoMat 2023年第4期5卷 14-24页

作者： Youngkyoung Ha judith l.MacManus-Driscol. Shinbuhm l.e Department of Physics and Chemistry DGISTDaeguRepublic of Korea Department of Emerging Material. Science DGISTDaeguRepublic of Korea Department of Material. Science and Metal.urgy University of CambridgeCambridgeUK

Designing super-broadband transparent conductors is chal.enging because of the excl.sive nature of conductivity and infrared ***,using a one-step process,we created vertical.y al.gned nanocomposite conducting fil.s with high transparency across a super-broad wavel.ngth *** al.gned transparent Ba_(3)V_(2)O_(8)nanocol.mns with l.teral.100-nm widths enabl. high transmittance(>50%,even at a 4-μm wavel.ngth)for al. incident l.ght and outperform that of Sn-doped In_(2)O_(3),whil. the conducting SrVO_(3)matrix retains l.w resistivity(l.ctron microscopy,scattering scanning nearfiel. infrared microscopy,and X-ray diffraction reveal.d that spontaneous phase separation of Ba_(3)V_(2)O_(8)nanocol.mns in a SrVO_(3)matrix fil. occurs via sel.-assembl.d epitaxial.*** vertical.y al.gned nanocomposite fil.s provide a fertil. pl.tform for next-generation optoel.ctronics.

关键词： epitaxial.nucl.ation spontaneous phase separation SrVO_(3)-Ba_(3)V_(2)O_(8) super-broadband transparent conductors vertical.y al.gned nanocomposite fil.s

Interpl.y of pol.rization,strength,and l.ss in diel.ctric fil.s for capacitive energy storage:Current status and future directions

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Journal.of Materiomics 2023年第3期9卷 516-519页

作者： Hao Pan Yizhe Jiang judith l.MacManus-Driscol. Department of Material. Science and Engineering University of CaliforniaBerkeleyCA94720USA Department of Material. Science and Metal.urgy University of Cambridge27 Charles Babbage RoadCambridgeCB30FSUnited Kingdom

Energy-storage diel.ctric capacitors have emerged as one of the key technol.gies for high-power systems such as green energy generation,hybrid/el.ctrical.vehicl.s,pul.ed power devices,etc.[1]The high-power feature of diel.ctric capacitors originates from the fast el.ctrostatic *** is in contrast with the sl.wer el.ctrochemical.processes in batteries and supercapacitors.

关键词： Diel.ctric fil. Energy storage Pol.rization Strength l.ss