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a.TEM Study of Coba.t-Ba.e a.loy Prototypes Fa.rica.ed by EBM

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Ma.eria.s Sciences a.d a.plica.ions 2011年第5期2卷 355-363页

作者： Sa.a.M. Ga.ta. La.ry E. Murr diana a. ramirez Brenda.I. Ma.ha.o Edwin Ma.tinez Da.iel H. Herna.dez Jose L. Ma.tinez Fra.cisco Medina.Rya. B. Wicker 不详

a.novel microstructura. a.chitecture consisting of Cr23C6 ca.bide spa.ia. columns wa. crea.ed in solid components of Co-26Cr-6Mo-0.2C fa.rica.ed from powder by a.ditive ma.ufa.turing using electron bea. melting. These columns of ca.bides extended in the build direction a.d a.e formed by the x-y ra.tering of the electron bea. to pre-hea. a.d melt powder la.ers using Ca. models. These microstructura. a.chitectures a.e simila. to ra.idly solidified/unidirectiona.ly solidified structures crea.ed by hea. extra.tion in the direction perpendicula. to the build pla.e. These columna. ca.bide a.chitectures were observed by optica. meta.logra.hy a.d tra.smission electron microscopy (TEM) a.d compa.ed with intrinsic sta.king fa.lt microstructures observed in a.nea.ed components. The TEM a.a.ysis a.lowed the deta.ls of the ca.bide crysta. structure a.d corresponding cubic morphology to be observed.

关键词： Electron Bea. Melting Sta.king Fa.lts Precipita.es

a.prototype for on-site genera.ion of chlorina.ed disinfecta.t for use in rura. a.ueducts

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Wa.er Science a.d Engineering 2024年第1期17卷 33-40页

作者： diana Ma.cela.Cuesta.Pa.ra.Felipe Correa.Ma.echa.a.drés Felipe Rubio Pinzon Da.idca.ilo ramirez Bustos Leonel a.veyro Tera. Llorente Miguel Ferna.do Jimenez Jimenez Chemica. a.d Environmenta. Engineering Depa.tment Fundacion Universidad de AmericaBogota 11711Colombia Chemica. Engineering Depa.tment Fundacion Universidad de AmericaBogota 117111Colombia Meca.ica. Engineering Depa.tment Fundacion Universidad de AmericaBogota 117111Colombia

Sodium hypochlorite ha. significa.t potentia. a. a.sa.ita.ion solution in ha.d-to-rea.h a.ea..Few studies ha.e investiga.ed the optima. electrolysis pa.a.eters for its production with volumes grea.er tha. 1o L.This study eva.ua.ed sodium hypochlorite production through electrolysis in a.22-L prototype a.d identified the optima. opera.ing pa.a.eters.Tests were performed using gra.hite electrodes with a.ea. of 68.4 cm²a. the la.ora.ory sca.e a.d 1865.0 cm?a. the prototype sca.e.a.design for experiments with different opera.ing times,chloride concentra.ions,a.d electric current intensities wa. developed.The optima. opera.ing time,sodium chloride concentra.ion,a.d current intensity a. the la.ora.ory sca.e were 120 min,150 g of chloride per liter,a.d 3 a.respectively,lea.ing to the production of 5.02 g/L of the disinfecta.t with a. energy efficiency of 12.21 mg of Cl2 per kilojoule.a. the prototype sca.e,the ma.imum sodium hypochlorite concentra.ion of 3.99 g of chloride per liter wa. a.hieved with a. opera.ing time of 120 min,a.sodium chloride concentra.ion of 100 g of chloride per liter,a.d a.current intensity of 70 a.rea.hing a. energy efficiency of 42.56 mg of Cl2 per kilojoule.In a.dition,this study eva.ua.ed the influences of the chloride concentra.ion,current intensity,a.d opera.ing time on the production of sodium hypochlorite a. the two sca.es,a.d formula.ed the equa.ions showing the trends of sodium hypochlorite production a.d energy efficiency in the electrochemica. systems.The 22-L prototype model for production of this oxidizing substa.ce is promising for disinfection of la.ge volumes of wa.er in a.ea. tha. a.e difficult to a.cess.

关键词： Disinfection Electrolysis Energy efficiency Optimiza.ion Sodium hypochlorite

Porta. vein a.teria.iza.ion in 25 liver tra.spla.t recipients:a.La.in a.erica. single-center experience

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World Journa. of Tra.spla.ta.ion 2024年第2期14卷 135-147页

作者： Nicola. a.dres Cortes-Mejia.diana Ferna.da.Beja.a.o-ramirez Jua. Jose Guerra.Londono Diego Rymel Trivino-a.va.ez Ra.uel Ta.a.es-Mesa.a.onso Vera.Torres Division of a.esthesiology Critical Care Medicineand Pain MedicineThe University of Texas MD Anderson Cancer CenterHoustonTX 77030United States Tra.spla.t a.d Hepa.obilia.y Surgery Depa.tment Fundacion Santa Fe de BogotaBogota 110111Colombia Genera. Surgery Depa.tment Fundacion Santa Fe de BogotaBogota 110111Colombia

Ba.KGROUND Porta. vein a.teria.iza.ion(PVa.ha. been used in liver tra.spla.ta.ion(LT)to ma.imize oxygen delivery when a.teria. circula.ion is compromised or ha. been used a. a. a.terna.ive reperfusion technique for complex porta. vein thrombosis(PVT).The effect of PVa.on porta. perfusion a.d prima.y gra.t dysfunction(PGD)ha. not been a.sessed.a.l pa.ients receiving PVa.a.d LT a. the Funda.ion Sa.ta.Fe de Bogota.between 2011 a.d 2022 were a.a.yzed.To a.count for the time-sensitive effects of gra.t perfusion,pa.ients were cla.sified into two groups:prereperfusion(pre-PVa.,if the a.terioporta. a.a.tomosis wa. performed before gra.t reva.cula.iza.ion,a.d postreperfusion(post-PVa.,if PVa.wa. performed a.terwa.d.The pre-PVa.ra.iona.e contempla.ed poor porta. hemodyna.ics,severe va.cula. stea.,or PVT.Post-PVa.wa. considered if gra.t hypoperfusion beca.e evident.Conserva.ive interventions were a.tempted before PVa.

关键词： Liver tra.spla.ta.ion Porta. vein a.teria.iza.ion a.teriovenous a.a.tomoses Porta. hypertension Porta. vein thrombosis Sponta.eous portosystemic shunts Va.cula. stea. phenomenon Prima.y gra.t dysfunction Ea.ly a.logra.t dysfunction

The computerized La.SI-BC Test versus the Sta.da.d La.SI-L Pa.er-a.d-Pencil Version in Community-Ba.ed-Sa.ples

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a.va.ces in a.zheimer's Disea.e 2024年第1期13卷 11-25页

作者： Rosie E. Curiel Cid a.exa.dra.Ortega.Ubbo Visser Ma.cela.Kita.gorodsky D. Dia.e Zheng diana Hinca.ie Kirsten Horne Crensha. a.hleigh Bea.lieu Brooke Bosworth Liz Ga.la.do Emory Neer Sofia.ramirez Eliza.eth a. Crocco Mike Georgiou Efrosyni Sfa.ia.a.i Da.id a. Loewenstein Center for Cognitive Neuroscience a.d a.ing a.d Depa.tment of Psychia.ry a.d Beha.iora. Sciences Miller School of Medicine University of Miami Miami FL USA Depa.tment of Computer Sciences University of Miami Coral Gables FL USA Nova.Southea.tern University Fort Lauderdale FL USA Depa.tment of Ra.iology a.d Nuclea. Medicine Miller School of Medicine University of Miami Miami FL USA

Proa.tive Sema.tic Interference (PSI) a.d fa.lure to recover from PSI (frPSI), a.e novel constructs a.sessed by the La.SI-L. These mea.ures a.e sensitive to cognitive cha.ges in ea.ly Mild Cognitive Impa.rment (MCI) a.d preclinica. a. determined by a. loa. using PET. The goa. of this study wa. to compa.e a.new computerized version of the La.SI-L (La.SI-Brief Computerized) to the sta.da.d pa.er-a.d-pencil version of the test. In this study, we exa.ined 110 cognitively unimpa.red (CU) older a.ults a.d 79 with a.nestic MCI (a.CI) who were a.ministered the pa.er-a.d-pencil form of the La.SI-L. Their performa.ce wa. compa.ed with 62 CU older a.ults a.d 52 a.CI pa.ticipa.ts exa.ined using the La.SI-BC. a.ter a.justment for cova.ia.es (degree of initia. lea.ning, sex, educa.ion, a.d la.gua.e of eva.ua.ion) both the sta.da.d a.d computerized versions distinguished between a.CI a.d CU pa.ticipa.ts. The performa.ce of CU a.d a.CI groups using either form wa. rela.ively commensura.e. Importa.tly, a. optima. combina.ion of Cued B2 reca.l a.d Cued B1 intrusions on the La.SI-BC yielded a. a.ea.under the ROC curve of .927, a.sensitivity of 92.3% a.d specificity of 88.1%, rela.ive to a. a.ea.under the ROC curve of .815, a.sensitivity of 72.5%, a.d a.specificity of 79.1% obta.ned for the pa.er-a.d-pencil La.SI-L. Overa.l, the La.SI-BC wa. compa.a.le, a.d in some wa.s, superior to the pa.er-a.d-pencil La.SI-L. a.va.ta.es of the La.SI-BC include a.more sta.da.dized a.ministra.ion, suita.ility for remote a.sessment, a.d a. a.toma.ed scoring mecha.ism tha. ca. be verified by a.built-in a.dio recording of responses.

关键词： Mild Cognitive Impa.rment Proa.tive Sema.tic Interference La.SI-L Computerized Cognitive a.sessment

Ventriculo-a.ria. shunt with occlusion of the interna. jugula. vein: opera.ive experience a.d surgica. technique

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中华神经外科杂志(英文) 2024年第2期10卷 1-8页

作者： Quintero Silvia.Ta.ia.a.ramirez-Vela.dia.Felipe Moreno a.dres Felipe Hortua.Vera.Lina.Rugeles Pa.la.Gonza.ez Ra.a.l a.gusto a.uero Pontificia.Universida. Ja.eria.a Clinica Medilaser S.A.S. Clinica Chicamocha Bucaramanga Santander Colombia Neurology a.d Neurosurgery Resea.ch Group Pontificia Universidad Javeriana Bogotá D.C. Colombia Universida. Industria. de Sa.ta.der Clinica Chicamocha Bucaramanga Colombia Universida. a.tónoma.de Buca.a.a.ga Clinica Chicamocha Bucaramanga Colombia Clinica.Chica.ocha Bucaramanga Santander Colombia

Ba.kground Ventricula. shunts a.e one of the most frequent techniques used for the ma.a.ement of hydrocepha.us. The ventriculoperitonea. shunt (VPS) is the most commonly performed procedure, a.d the ventriculoa.ria. shunt (Va.) is the second option in most medica. centers. The ma.n objective of this study is to introduce a.d describe a.surgica. a.proa.h for Va. outlining our experience a.d compa.ing it with tra.itiona. shunting techniques.Methods In this retrospective cohort compa.ison study, we included pa.ients with hydrocepha.us trea.ed with a.surgica. procedure between Ja.ua.y 2010 a.d Februa.y 2021 a. a.single a.a.emic institution. We ca.egorized the procedures into two groups: pa.ients with VPS a.d conventiona. Va. grouped together into the conventiona. technique (CT) group, a.d the second group wa. pa.ients with whom we performed Va. with complete interna. jugula. vein occlusion (IJVOT). We compa.ed the surgica. time, postopera.ive complica.ions, a.d occurrence of shunt fa.lure a.ong the groups by performing univa.ia.e a.a.ysis using the Fisher exa.t test.Results Out of the 106 pa.ients included in the a.a.ysis, IJVOT wa. performed in 66 pa.ients, a.d CT in 40 pa.ients. The media. surgica. time wa. 60 min (IQR 60-90) for IJVOT versus 100 min (IQR 60-120) for CT (p a.month a.ter the procedure, 83.3% of pa.ients with IJVOT a.d 62.5% of pa.ients with CT did not require shunt remova. or shunt revision (p a.es were 12.5% a.d 1.5% for CT while 1.5% a.d 2.5% for IJVOT a. 1 a.d 6 months a.ter the procedure.Conclusion Our findings demonstra.e tha. Va. with IJVOT is a.sa.e method tha. exhibited shorter surgica. times a.d outcomes compa.a.le to CT. However, since the present study represents the first cohort eva.ua.ing IJVOT, it is impera.ive to conduct la.ger prospective studies, a.ong with clinica. tria.s, to fully explore a.d esta.lish effica.y, long-term outcomes, a.d a. in-depth compa.ison a.ong shunting techniques.

关键词： Hydrocepha.us Ventriculoa.ria. shunting Interna. jugula. vein Opera.ive time Complica.ions Shunt remova.

Nickel-ba.ed cerium zircona.e inorga.ic complex structures for CO_(2)va.orisa.ion via.dry reforming of metha.e

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Journa. of Environmenta. Sciences 2024年第6期140卷 12-23页

作者： Jua. Luis Ma.tín-Espejo Loukia.Pa.tzechroula.Merkouri Jesús Gánda.a.Loe José a.tonio Odriozola.Toma. ramirez Reina.La.ra.Pa.tor-Pérez Depa.tment of Inorga.ic Chemistry a.d Ma.eria. Sciences Institute of Seville University of Seville-CSICSeville 41092Spain Depa.tment of Chemica. a.d Process Engineering University of SurreyGuildford GU27XHUnited Kingdom

The increa.ing a.thropogenic emissions of greenhouse ga.es(GHG)is encoura.ing extensive resea.ch in CO_(2)utilisa.ion.Dry reforming of metha.e(DRM)depicts a.via.le stra.egy to convert both CO_(2)a.d CH4into synga.,a.worthwhile chemica. intermedia.e.a.ong the different a.tive pha.es for DRM,the use of nickel a. ca.a.yst is economica.ly fa.oura.le,but typica.ly dea.tiva.es due to sintering a.d ca.bon deposition.The sta.ilisa.ion of Ni a. different loa.ings in cerium zircona.e inorga.ic complex structures is investiga.ed in this work a. stra.egy to develop robust Ni-ba.ed DRM ca.a.ysts.XRD a.d TPR-H2a.a.yses confirmed the existence of different pha.es a.cording to the Ni loa.ing in these ma.eria.s.Besides,superficia. Ni is observed a. well a. the existence of a.CeNiO_(3)perovskite structure.The ca.a.ytic a.tivity wa. tested,proving tha. 10 wt.%Ni loa.ing is the optimum which ma.imises conversion.This ca.a.yst wa. a.so tested in long-term sta.ility experiments a. 600a.d 800℃in order to study the potentia. dea.tiva.ion issues a. two different tempera.ures.a. 600℃,ca.bon forma.ion is the ma.n ca.se of ca.a.ytic dea.tiva.ion,wherea. a.robust sta.ility is shown a. 800℃,observing no sintering of the a.tive pha.e evidencing the success of this stra.egy rendering a.new fa.ily of economica.ly a.pea.ing CO_(2)a.d bioga. mixtures upgra.ing ca.a.ysts.

关键词： CO_(2)conversion Dry reforming of metha.e Nickel ca.a.ysts Pyrochlore Cerium zircona.e

a.socia.ion between lifestyle fa.tors a.d thyroid function in young euthyroid a.ults

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Food Science a.d Huma. Wellness 2024年第1期13卷 265-275页

作者： Elisa.Mercha.-ramirez Guillermo Sa.chez-Delga.o Luca. Jura.o-Fa.oli Fra.cisco M a.osta.Ma.uel Munoz-Torres Jose M.Lla.a.-Elvira.Jona.a. R Ruiz Sport a.d Hea.th University Resea.ch Institute(iMUDS) Faculty of Sports ScienceUniversity of GranadaGranada 18016Spain Pennington Biomedica. Resea.ch Center Baton Rouge 70808USA Fa.ulty of Medicine University of GranadaGranada 18071Spain Turku PET Centre University of TurkuTurku 20500Finland Turku PET Centre Turku University HospitalTurku 20520Finland Biosa.ita.y Resea.ch Institute of Gra.a.a.Ibs.Gra.a.a. Granada 18012Spain CIBERFES Instituto de Salud CarlosⅢMadrid 28029Spain Endocrinology a.d Nutrition Service University Hospital San CecilioGranada 18016Spain Nuclea. Medicine Service "Virgen de las Nieves"University HospitalGranada 18014Spain

Purpose:The present work exa.ines the a.socia.ions of dieta.y ha.its,sedenta.ism,physica. a.tivity(Pa.levels a.d sleep ha.its,with thyroid function in young euthyroid a.ults.Methods:a.tota. of 105 young euthyroid a.ults pa.ticipa.ed in this cross-sectiona. study.Thyroid function wa. determined in fa.ting conditions(>6 h).Dieta.y ha.its were mea.ured by a.food frequency questionna.re a.d three non-consecutive 24 h reca.ls,a.d different dieta.y inta.e a.d pa.terns were then estima.ed.The time spent in sedenta.y,Pa.levels a.d sleep ha.its were objectively mea.ured using a.wrist-worn a.celerometer.Results:Energy a.d ca.bohydra.e inta.e were positively a.socia.ed with thyroid stimula.ing hormone(TSH)(β=0.222;R^(2)=0.102;P=0.022 a.dβ=0.425;R^(2)=0.129;P=0.007,respectively)wherea. fa. inta.e wa. nega.ively a.socia.ed with TSH(β=-0.428;R^(2)=0.137;P=0.004).Energy inta.e wa. a.so positively a.socia.ed with free triiodothyronine(β=0.277;R^(2)=0.137;P=0.004).Further,a.herence to the Mediterra.ea. diet wa. nega.ively rela.ed to TSH a.d free thyroxine(FT4)(β=-0.221;R^(2)=0.113;P=0.020 a.dβ=-0.268;R^(2)=0.071;P=0.007,respectively).Vigorous-intensity a.d overa.l Pa.were nega.ively a.socia.ed with FT4(β=-0.227;R^(2)=0.052;P=0.022 a.dβ=-0.204;R^(2)=0.042;P=0.041,respectively).In contra.t,no a.socia.ions were found between sleep pa.a.eters a.d thyroid function.Conclusions:Lifestyle fa.tors such a. dieta.y inta.e a.d Pa.levels seems to be rela.ed to thyroid function even in young euthyroid a.ults.

关键词： Thyroid hormones Dieta.y inta.e Sleep Physica. a.tivity Euthyroid

Frontier of CO_(2)ca.ture a.d conversion towa.ds ca.bon neutra.ity

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Journa. of Environmenta. Sciences 2024年第6期140卷 1-1页

作者： Tsunehiro Ta.a.a.Qia.g Wa.g Min Liu Zheng Wa.g Toma. ramirez Reina Depa.tment of Molecula. Engineering Graduate School of EngineeringKyoto UniversityKyoto 6158510Japan College of Environmenta. Science a.d Engineering Beijing Forestry UniversityBeijing 100083China Sta.e Key La.ora.ory of Powder Meta.lurgy School of Physical and ElectronicsCentral South UniversityChangsha 410083China La.ora.ory of a.mospheric Environment a.d Pollution Control Resea.ch Center for Eco-Environmenta. Sciences Chinese Academy of SciencesBeijing 100085China Depa.tment of Chemica. a.d Process Engineering Depa.tment University of SurreyGuildford GU27XHUnited Kingdom

With the ra.id development of huma. civiliza.ion,the concentra.ion of CO_(2)in the a.mosphere ha. sha.ply increa.ed in the pa.t century,resulting in globa. tempera.ure a.oma.y,extreme clima.e events,a.d eco-environmenta. disturba.ces.The green-house ga. CO_(2)is ma.nly relea.ed from the process of fossil fuel utiliza.ion a.d combustion.

关键词： a.oma.y neutra. sha.ply

Heterogeneous tuna.le Ⅲ-Ⅴ-on-silicon-nitride mode-locked la.er emitting wide optica. spectra

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Photonics Resea.ch 2024年第3期12卷 I0021-I0027页

作者： Ma.IMILIEN BILLET STIJN CUYVERS STIJN POELMa. a.TUR HERMa.S Sa.DEEP SEEMa.Sa.EENDRa.Ta.UKU Na.a.URa.SHINYa.OKa.OTO Ya.UHISa.INa.a.Ka.UYa.HISa.a.Ta.U HIRa.a.a.JOa. ramirez DELPHINE NÉEL NICOLa. Va.SSIÈRE JEa. DECOBERT PHILIPPE SOUSSa. Xa.IER ROTTENBERG GUNTHER ROELKENS JONØ.KJELLMa. Ba.T KUYKEN Photonics Resea.ch Group Department of Information TechnologyGhent University-imec9052 GhentBelgium imec 3001 LeuvenBelgium Technology Division Panasonic Holdings CorporationMoriguchi-CityOsakaJapan Ⅲ-Ⅴ La. F91767 PalaiseauFrance

We demonstra.e a.Ⅲ-Ⅴ-on-silicon-nitride mode-locked la.er through the heterogeneous integra.ion of a.semiconductor optica. a.plifier on a.pa.sive silicon-nitride ca.ity using the technique of micro-tra.sfer printing. In the initia. pha.e of our study, we focus on optimizing the la.ing wa.elength to be centered a. 1550 nm. This optimiza.ion is a.hieved by conducting experiments with 27 mode-locked la.ers, ea.h incorpora.ing optica. a.plifiers fea.uring distinct multiple-qua.tum-well photoluminescence va.ues. Subsequently we present a.comprehensive study investiga.ing the beha.ior of the mode-locking regime when the electrica. driving pa.a.eters a.e va.ied. Specifica.ly, we explore the impa.t of the ga.n volta.e a.d sa.ura.le a.sorber current on the locking sta.ility of a.tuna.le mode-locked la.er. By ma.ipula.ing these pa.a.eters, we demonstra.e the precise control of the optica. spectrum a.ross a.wide ra.ge of wa.elengths spa.ning from 1530 to 1580 nm. Furthermore, we implement a. optimiza.ion a.proa.h ba.ed on a.Monte Ca.lo a.a.ysis a.med a. enha.cing the mode overla. within the ga.n region. This a.justment ena.les the a.hievement of a.la.er emitting a.23-nm-wide spectrum while ma.nta.ning a.defined 10 dB ba.dwidth for a.pulse repetition ra.e of 3 GHz.

关键词： tuna.le a.plifier mode