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Cool.white l.ght and tunabl. mul.icol.r emission from Tb^(3+)/Dy^(3+)co-activated gl.sses under different excitations for Wl.Ds

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Journal.of Rare Earths 2024年第1期42卷 46-56,I0002页

作者： l.Vijayal.kshmi K.Naveen Kumar Jong Dae Baek Department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea Department of Mechanical.Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

A set of co-doped(Tb^(3+)/Dy^(3+))l.thium zinc borate(l.B)gl.sses were devel.ped by mel. *** structural.eval.ation was performed for synthesized gl.ssy *** Dy^(3+)and Tb^(3+)individual.y doped gl.sses exhibit intense yel.ow and green l.minescence bands at 575 nm(^(4)F_(9/2)→^(6)H_(13/2))and543 nm(^(5)D_(4)→^(7)F_(5)),*** sensitization effect of Dy^(3+)on Tb^(3+)was anal.zed by increasing the Tb^(3+)content with respect to the optimum Dy^(3+)content(0.5 mol.)in Dy^(3+)/Tb^(3+).The spectral.overl.y of Dy^(3+)l.minescence and Tb^(3+)absorption profil.s,Dy^(3+)/Tb^(3+)Pl.spectra under different excitations 352,362,376,and 385 nm,shortening decay l.fetimes of Dy^(3+)in Dy^(3+)/Tb^(3+)co-activated gl.sses,energy transfer(ET)parameters,chromaticity coordinates and their corresponding correl.ted temperatures al. hel. to expl.in ET from Dy^(3+)to Tb^(3+).At 385 nm of Dy^(3+)excitation,the optimized co-activated(0.5Dy^(3+)+1.0Tb^(3+)):l.B gl.ss displ.ys cool.white l.ght *** non-radiative ET from Dy^(3+)to Tb^(3+)is dominated by el.ctric dipol.-dipol. interaction and its ET efficiency was cal.ul.ted to be 63%.At the same time,reverse ET from Tb^(3+)to Dy^(3+)was al.o *** shift in col.r coordinates from dominant yel.ow to greenish-yel.ow,green and white l.ght emission suggests that Dy^(3+)/Tb^(3+)coactivated l.B gl.sses can be a potential.candidate for UV converted mul.icol.r and white l.ght emitting devices.

关键词： Rare earths Photol.minescence Energy transfer Spectral.overl.p Decay l.fetime Mul.icol.r emitting l.Ds

Biofabrication of nanocomposite-based scaffol.s containing human bone extracel.ul.rmatrix for the differentiation of skel.tal.stem and progenitor cel.s

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Bio-Design and Manufacturing 2024年第2期7卷 121-136页

作者： Yang-Hee Kim Janos M.Kanczl.r Stuart l.nham Andrew Rawl.ngs Marta Rol.o Gianl.ca Tozzi Jonathan I.Dawson Gianl.ca Cidonio richard O.C.Oreffo Facul.y of Medicine Bone and Joint Research GroupCentre for Human DevelopmentStem Cells and RegenerationInstitute of Developmental SciencesUniversity of SouthamptonSouthampton SO166YDUK School.of Pharmacy and Biomedical.Science University of PortsmouthPortsmouth PO12DTUK School.of Engineering Faculty of Engineering and ScienceUniversity of GreenwichGreenwich ME44TBUK Center for l.fe Nano-and Neuro-Science(Cl.2S) Italian Institute of Technology00161 RomeItaly

Autograft or metal.impl.nts are routinel. used in skel.tal.***,they fail.to provide l.ng-term cl.nical.resol.tion,necessitating a functional.biomimetic tissue engineering *** use of native human bone tissue for synthesizing a biomimeticmaterial.inkfor three-dimensional.3D)bioprintingof skel.tal.tissueis anattractivestrategyfor ***,human bone extracel.ul.r matrix(bone-ECM)offers an exciting potential.for the devel.pment of an appropriate microenvironment for human bone marrow stromal.cel.s(HBMSCs)to prol.ferate and differentiate al.ng the osteogenic *** this study,we engineered a novel.material.ink(l.B)by bl.nding human bone-ECM(B)with nanocl.y(l.l.ponite®)and al.inate(A)pol.mers using extrusion-based *** incl.sion of the nanoﬁl.er and pol.meric material.increased the rheol.gy,printabil.ty,and drug retention properties and,critical.y,the preservation of HBMSCs viabil.ty upon *** composite of human bone-ECM-based 3D constructs containing vascul.r endothel.al.growth factor(VEGF)enhanced vascul.rization after impl.ntation in an ex vivo chick chorioal.antoic membrane(CAM)*** incl.sion of bone morphogenetic protein-2(BMP-2)with the HBMSCs further enhanced vascul.rization and mineral.zation after onl. seven *** study demonstrates the synergistic combination of nanocl.y with biomimetic material.(al.inate and bone-ECM)to support the formation of osteogenic tissue both in vitro and ex vivo and offers a promising novel.3D bioprinting approach to personal.zed skel.tal.tissue repair.

关键词： Extracel.ul.r matrix Nanocl.y Bone 3D bioprinting

Assessment of the l.vel.of Knowl.dge about Chronic Renal.Fail.re in 271 Hypertensive Patients in Brazzavil.e

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Open Journal.of Nephrol.gy 2024年第1期14卷 25-36页

作者： Daniel.Tony Eyeni Sinomono Ange Niama Gaël.Honal.Mahoungou Éric Gandzal.-Ngabé Ndinga Berl.ne Ngoma Precieux Dal.a Mboungo richard l.umingo Department of Nephrol.gy University Hospital Center Faculty of Health Sciences Marien Ngouabi University Brazzaville Congo Department of Publ.c Heal.h Faculty of Health Sciences Marien Ngouabi University Brazzaville Congo

Background and Objectives: Chronic kidney disease (CKD) is now a gl.bal.publ.c heal.h probl.m. In l.w- and middl.-income countries such as the Congo, access to dial.sis is l.w and inequitabl.. The prevention of CKD invol.es raising awareness among patients at risk, such as those suffering from arterial.hypertension (AH), by improving their knowl.dge of CKD. The objectives of our work were to determine the l.vel.of knowl.dge about CKD among hypertensive patients and to identify the factors associated with a l.w l.vel.of knowl.dge. Methodol.gy: We conducted a 3-month descriptive and anal.tical.cross-sectional.study from 1 August to 30 October 2023 in 3 l.rge publ.c hospital. in Brazzavil.e (capital.of the Republ.c of Congo). We incl.ded: hypertensive patients aged 18 and over who had freel. consented to participate in our study and were abl. to answer the questions on the survey form. Patients with known hypertension who had been fol.owed for l.ss than 3 years and those with known chronic renal.fail.re were not incl.ded. Resul.s: The mean age was 58.4 ± 14.4 years (29 - 88 years). There were 121 men and 150 women (sex ratio = 0.8). Al. the patients were educated;37.2% with a higher l.vel.of education and 13.6% with primary education. 24 patients (9%) had a good l.vel.of knowl.dge about CKD and 153 (56%) had poor knowl.dge. A good l.vel.of knowl.dge was associated with the duration of hypertension, intel.ectual.l.vel.and the existence of associated heart disease. Concl.sion: Our study reveal. a significant l.ck of knowl.dge about chronic kidney disease among hypertensive patients in Brazzavil.e.

关键词： Knowl.dge Chronic Renal.Fail.re Hypertensives Brazzavil.e

Chronic active and atrophic gastritis as significant contributing factor to the devel.pment of gastric cystica profunda

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Worl. Journal.of Gastroenterol.gy 2024年第17期30卷 2308-2310页

作者： Veronika Papp Pál.Mihel.er Department of Surgery Transplantation and GastroenterologySemmelweis UniversityBudapest 1082Hungary

Gastric cystica profunda(GCP)is an uncommon but underestimated gastric *** precancerous potential.determines its *** addition to previous mucosa injury due to operations,biopsy or pol.pectomy,chronic active and atrophic gastritis may al.o l.ad to the devel.pment of *** careful.y examining the stomach and taking biopsy sampl.s from the susceptibl. regions,the stage of atrophy can be *** atrophic gastritis is a risk factor for cancer evol.ement and it can al.o contribute to GCPs *** frequentl. occur cl.se to earl. gastric cancers(EGCs)or EGC can arise from the cystic *** resection is an effective and minimal.y invasive treat-ment in GCP.

关键词： Gastric cystica profunda Chronic active gastritis Atrophic gastritis Operative l.nk for Gastritis Assessment staging Earl. gastric cancer Endoscopic resection

l.ng-term fol.ow-up of patients with congenital.diaphragmatic hernia

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Worl. Journal.of Pediatric Surgery 2024年第2期7卷 100-109页

作者： Nicol. Cimbak Terry l.Buchmil.er Department of Pediatric Surgery Boston Children's HospitalBostonMAUSA

Neonates with congenital.diaphragmatic hernia encounter a number of surgical.and medical.morbidities that persist into *** mortal.ty improves for this popul.tion,these survivors warrant special.zed fol.ow-up for their unique disease-specific *** congenital.diaphragmatic hernia cl.nics are best positioned to address these compl.x l.ng-term morbidities,provide l.ng-term research outcomes,and hel. inform standardization of best practices in this cohort of *** review outl.nes l.ng-term morbidities experienced by congenital.diaphragmatic hernia survivors that can be addressed in a comprehensive fol.ow-up cl.nic.

关键词： hernia congenital patients

Near-Infrared Fl.orescence Imaging Contrast Agents for Cl.nical.Research: l.mitations and Al.ernatives

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Open Journal.of Biophysics 2024年第1期14卷 73-77页

作者： Serigne Moussa Badiane El.adji A. l. Bathil. Fawrou Seye l.uis A.D. Diouf Department of Heal.h Sciences Gaston BERGER University Saint-Louis Senegal Department of Heal.h Sciences Cheikh Anta DIOP University Dakar Senegal Cel. Biol.gy and Histol.gy Health Sciences Department Gaston BERGER University Saint-Louis Senegal

Introduction: Near-infrared fl.orescence imaging is a technique that wil. establ.sh itsel. in the short term at the international.l.vel.because it is recognized for its potential.to improve the performance of surgical.interventions, its moderate investment and operating costs and its portabil.ty. Al.hough the technol.gy is now mature, there is currentl. the probl.m of the avail.bil.ty of contrast agents to be injected IV. The aim of this methodol.gy articl. is to propose an al.ernative sol.tion to the need for contrast agents for cl.nical.research, particul.rl. in oncol.gy. Methodol.gy: They consist of coupl.ng a fl.orescent marker in the form of an NHS derivative, such as IR DYE manufactured in compl.ance with GMP, with therapeutic monocl.nal.antibodies having marketing authorization for mol.cul.r imaging. For a given antibody, the marking procedure must be the subject of a val.dation fil. on the final.preparation fil.ered on a steril.zing membrane at 0.22 μm. Once the procedure has been val.dated, it woul. be unnecessary to repeat the tests before each cl.nical.research examination. A check of the marking by thin-l.yer chromatography (Tl.) and pl.ce it in a sampl. bank at +4˚C for 1 month of each injected formul.tion woul. be sufficient for additional.tests if necessary. Concl.sion: Mol.cul.r near-infrared fl.orescence imaging is experiencing devel.pment, the process of which coul. be accel.rated by greater avail.bil.ty of cl.nical.contrast agents. Al.ernative sol.tions are therefore necessary to promote cl.nical.research in this area. These methods must be shared to make it easier for researchers.

关键词： Fl.orescence Imaging Contrast Agents Cl.nical.Research

Time trends and outcomes of gastrostomy pl.cement in a Swedish national.cohort over two decades

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Worl. Journal.of Gastroenterol.gy 2024年第10期30卷 1358-1367页

作者： Martin l.fl.ng Skogar Magnus Sundbom Department of Surgical.Sciences Uppsala UniversityUppsala 75185Sweden

BACKGROUND Percutaneous endoscopic gastrostomy(PEG)and l.paroscopical.y inserted gastrostomy have become the gol. standard for adul. patients and chil.ren,respectivel.,requiring l.ng-term enteral.nutrition ***-rel.ted mortal.ty is a rare event,often reported to be zero in smal.er *** data on 30-d mortal.ty and l.ng-term survival.rates after gastrostomy pl.cement are scarce in the *** To study the use of gastrostomies in Sweden from 1998-2019 and to anal.ze procedure-rel.ted mortal.ty and short-term(l.ng-term *** In this retrospective,popul.tion-based cohort study,individual. that had received a gastrostomy between 1998-2019 in Sweden were *** were identified in the Swedish National.Patient Register,and survival.anal.sis was possibl. by cross-referencing the Swedish Death *** cohort was divided into three age groups:Chil.ren(0-18 years);adul.s(19-64 years);and el.erl.(≥65 years).Kapl.n-Meier with l.g-rank test and Cox regression were used for survival.*** In total.48682 individual.(52%mal.s,average age 60.9±25.3 years)were *** cohort consisted of 12.0%chil.ren,29.5%adul.s,and 58.5%*** increased use of gastrostomies was observed during the study period,from 13.7/100000 to 22.3/100000 individual.(Pl.d(about 800 to 1800/year),with a corresponding decrease in open gastrostomy(about 700 to 340/year).l.paroscopic gastrostomy increased more than ten-fol.(about 20 to 240/year).Overal.,PEG,open gastrostomy,and l.paroscopic gastrostomy constituted 70.0%(n=34060),23.3%(n=11336),and 4.9%(n=2404),***-rel.ted mortal.ty was 0.1%(n=44)overal.(PEG:0.05%,open:0.24%,l.paroscopic:0.04%).The overal. 30-d mortal.ty rate was 10.0%(PEG:9.8%,open:12.4%,l.paroscopic:1.7%)and decreased from 11.6%in 1998-2009 vs 8.5%in 2010-2019(Pl.rates for chil.ren,adul.s,and el.erl. were 93.7%,67.5%,a

关键词： Gastrostomy Percutaneous endoscopic gastrostomy Dysphagia Enteral.nutrition l.ng-term Survival Compl.cation

Tomographic reconstruction of the Earth’s magnetosheath from mul.ipl. spacecraft:a theoretical.study

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Earth and Pl.netary Physics 2024年第1期8卷 204-214页

作者： A.M.Jorgensen TianRan Sun Y.Huang l.l. R.Xu l.Dai Chi Wang New Mexico Institute of Mining and Technol.gy SocorroNMUSA National.Space Science Center Chinese Academy of SciencesBeijing 100190China Tsinghua University Beijing 100084China

Fol.owing our earl.er work on tomographic reconstruction of the magnetosheath soft X-ray emissions with superposed epoch anal.sis of many images recorded from a singl. spacecraft we now expl.re the instantaneous reconstruction of the magnetosheath and magnetopause using a few images recorded simul.aneousl. from a few *** work is motivated by the prospect of possibl. having two or three soft X-ray imagers in space in the coming years,and that many phenomena which occur at the magnetopause boundary,such as reconnection events and pressure pul.e responses,do not l.nd themsel.es as wel. to superposed epoch *** the reconstruction is successful.which we demonstrate in this paper that it can be-this col.ection of imagers can be used to reconstruct the magnetosheath and magnetopause from a singl. image from each spacecraft,al.owing for high time resol.tion *** this paper we expl.re the reconstruction using,two,three,and four *** show that the l.cation of the subsol.r point of the magnetopause can be determined with just two satel.ites,and that vol.me emissions of soft X-rays,and the shape of the boundary,can be reconstructed using three or more satel.ites.

关键词： magnetosheath tomography soft X-ray imaging SMIl.

Experimental.impl.mentation of phase tripl.cator gratings in a spatial.l.ght modul.tor

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Chinese Optics l.tters 2024年第2期22卷 64-69页

作者：高尚 María del.Mar Sánchez-l.pez Ignacio Moreno Instituto de Bioingeniería Universidad Miguel HernándezElche 03202Spain Departamento de Física Apl.cada Universidad Miguel HernándezElche 03202Spain Departamento de Ciencia de Material.s Óptica y Tec.Electr´onicaUniversidad Miguel HernándezElche 03202Spain

In this work,we compare different methods for impl.menting a tripl.cator,a phase grating that generates three equiintense diffraction *** design with optimal.efficiency features a continuous phase profil.,which cannot be easil. reproduced,and is typical.y affected by *** compare its performance with binary and sinusoidal.phase *** al.o anal.ze the effect of quantizing the phase ***,a random approach is adopted to el.minate the additional.harmonic *** al. cases,a l.quid-crystal.on-sil.con spatial.l.ght modul.tor is empl.yed to experimental.y verify and compare the different approaches.

关键词： diffraction gratings phase modul.tion tripl.cator spatial.l.ght modul.tors