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Col.n Adenocarcinoma in a Retrograde Intussusception: A Case Report and l.terature Review

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Open Journal.of Gastroenterol.gy 2024年第5期14卷 153-160页

作者： Carl.s Hernández brito Pedro Arredondo Ruiz Brenda Paol. Sáenz Dávil. Arsenio Torres Del.ado l.is Eduardo Méndez Turrubiates l.is Ángel.Amezcua Tol.do Omar Josué Herrera l.pez Surgical.Oncol.gy Department Centro Oncol&#243gico Onkolid Veracruz Mexico Cl.nical.Oncol.gy Department Centro Oncol&#243gico Onkolid Veracruz Mexico General.and l.paroscopic Surgery Corporativo M&#233dico-Quir&#250rgico Torres Veracruz Mexico Radiation Oncol.gy Department Centro Oncol&#243gico Onkolid Veracruz Mexico Radiol.gy Department Centro Oncol&#243gico Onkolid Veracruz Mexico Anatomical.Pathol.gy Department Centro Oncol&#243gico Onkolid Veracruz Mexico

Background: Intussusception is defined as a tel.scoping of a proximal.gastrointestinal.segment w.th its mesentery to a distal.one, onl. 5% occur in adul.s and in col.n the probabil.ty that it is caused by a mal.gnant disease is up to 65%. Onl. 1% occurs in a retrograde manner, the rest occur in an anterograde manner. Aim: Describe the cl.nical.presentation of an intussusception in the adul. patient as w.l. as its most frequent causes and possibl. compl.cations that infl.ence decision making for a definitive treatment. Case Presentation: A 66-year-ol. w.man diagnosed w.th col.n adenocarcinoma w.o underw.nt el.ctive transverse col.ctomy and col.nic anastomosis w.th an incidental.finding of a transverse col.n tumor in a retrograde intussusception w.s studied. Concl.sion: In any adul. patient w.th an intussusception especial.y in col.n a neopl.sia shoul. be suspected and the affected segment shoul. be resected w.thout being reduced due to the risk of perforation and tumor dissemination.

关键词： Col.n Cancer Col.n Adenocarcinoma Col.nic Intussusception Intussusception

Nesting innovations al.ow.popul.tion grow.h in an invasive popul.tion of rose-ringed parakeets

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Current Zool.gy 2022年第6期68卷 617-626页

作者： Dail.s HERNANDEZ-brito Jose l.TEl.A Guil.ermo Bl.NCO Martina CARRETE Department of Conservation Biol.gy Donana Biological Station(CSIC)Calle Americo Vespucio26Sevilla 41092Spain Department of Evol.tionary Ecol.gy Museo Nacional de Ciencias Naturales(CSIC)Calle JoseGutierrez Abascal2Madrid 28006Spain Department of Physical Chemical and Natural SystemsUniversidad Pablo de OlavideCarretera de Utrerakm 1Sevilla 41013Spain

Certain traits of recipient environments,such as the avail.bil.ty of l.miting resources,strongl. determine the establ.shment success and spread of non-native *** l.mitations may be overcome through behavioral.pl.sticity,al.ow.ng them to expl.it al.ernative ***,w. show.how.a secondary cavity nester bird,the rose-ringed parakeet Psittacul. krameri,innovates its nesting behavior as a response to the shortage of tree cavities for nesting in its invasive range in Tenerife(Canary Isl.nds).w. observed that some breeding pairs excavated their ow. nest cavities in pal.s,thus becoming primary cavity nester,w.ereas others occupied nests buil. w.th w.od sticks by another invasive species,the monk parakeet Myiopsitta *** use of these novel.nesting strategies increased the number of breeding pairs by up to 52%over 6 years,contributing to a 128.8%increase of the w.ol. *** nests w.re l.cated at greater heights above ground and w.re more aggregated around conspecifics but did not resul. in greater breeding success than natural.*** of monk parakeet col.nies by rose-ringed parakeets al.o benefited the former species through a protective-nesting association against nest *** resul.s show.how.an invasive species innovate nesting behaviors and increase nest-site avail.bil.ty in the recipient environment,thus facil.tating its popul.tion grow.h and invasion *** behavioral.innovations in other invasive rose-ringed parakeet popul.tions may be overl.oked,and shoul. be considered for effective management pl.ns.

关键词： antipredator response behavioral.fl.xibil.ty biol.gical.invasions cavity nesters nesting innovation reproductive success

l.minescence investigation of Dy2O2S and Dy2O2SO4 obtained by thermal.decomposition of sul.ate hydrate

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Journal.of Rare Earths 2016年第8期34卷 814-819页

作者： R.V.Rodngues l.Marciniak l.U.Khan J.R.Matos H.F.brito w.Strek Institute of Chemistry University of Sao Paulo Butanta 748 26077 Sao Paulo Brasil Institute of l.w.Temperature and Structure Research University of Wroctaw Oko1na 250-422 Wroclaw Poland

The yel.ow.emitting dysprosium oxysul.ide （Dy2O2S） and dysprosium oxysul.ate （Dy202SO4） compounds w.re prepared from the thermal.decomposition of hydrated dysprosium sul.hate. The material. w.re characterized by using thermogravimetry （TG/DTG）, X-ray pow.er diffraction （XRD）, Fourier transform infrared （FTIR） and Raman spectroscopies. The thermal.stabil.ty temperatures at around 1151 and 1313 K w.re determined for the Dy202S and Dy202SO4 material., respectivel.. The photol.mines- cence properties of the dysprosium oxysul.ide w.re investigated, show.ng narrow.emission bands assigned to the 4F9/2----＊6HJ intracon- figurational.transitions of the Dy3＋ ion. The yel.ow.emission col.r of this phosphor suggests that the Dy202S is a promising material.for appl.cations in l.Ds.

关键词： Dy202S/Dy202SO4 sul.ate thermal.decomposition l.minescence rare earths

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Journal.of Energy Chemistry 2022年第10期31卷 88-113,I0003页

作者： Magno B.Costa Moisés A.de Araújo Marcos V.de l.ma Tinoco Jul.ana F.de brito l.cia H.Mascaro Departamento de Química Universidade Federal de São CarlosRodovia Washington Luizkm 235São CarlosSão Paulo 13565-905Brazil Instituto de Química de São Carl.s Universidade de São PauloAvenida Trabalhador Sancarlense400São CarlosSão Paulo 13566-590Brazil Instituto de Química Universidade Estadual PaulistaRua Professor Francisco Degnis/nAraraquaraSão Paulo 14800-900Brazil

This review.show. the importance of w._(3)photoanode as a potential.y l.w.cost,efficient,stabl.,and photoactive material.for l.ght-driven w.ter *** such,this manuscript aims to review.the most recent publ.cations regarding the strategies to improve the phoel.ctroactivity of w._(3)fil.s for w.ter *** addition,this review.aims to graphical.y highl.ght and discuss the general.trendings of the photocurrent density response and stabil.ty test of the recent outstanding studies in the l.terature for photoel.ctrochemical.w.ter spl.tting *** strategies covered in this review.w.l. not onl. concern the w._(3)morphol.gy and crystal.pl.ne grow.h,but al.o the many arrangements possibil.ties to improve the w._(3)efficiency for w.ter photoel.ctrooxidation,such as defect engineering based on oxygen vacancies,doping,decorations,and homo and *** these strategies are compared by the photocurrent density resul.s and by the stabil.ty of these *** best resul.s in this sense w.re observed in cases w.ere the use of heterojunction w.s appl.ed together w.th a desired morphol.gy and crystal.pl.ne of the w._(3)***,the modifications that caused a decrease in the photocurrent density reaching val.es that are even l.w.r than the pure w._(3)w.re al.o *** this w.y,this review.intends to improve the know.edge about the synthesis and design of w._(3)photoanodes to further obtain an efficient photocatal.st to minimize the recombination l.sses or l.sses across the interfaces and improve the photoel.ctroactivity for w.ter spl.tting in the l.rge-scal. appl.cation.

关键词： Sol.r energy H_(2)production N-type semiconductor Photoel.ctrode design Oxygen evol.tion reaction

EXAFS study of cation reordering in NaYF_4:Yb^(3+),Tb^(3+) up-conversion l.minescence material.

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Journal.of Rare Earths 2014年第3期32卷 226-229页

作者： H.F.brito J.Hl. T.l.amanen T.l.ihinen M.l.stusaari l.Pihl.ren l.C.V.Rodrigues T.Soukka Instituto de Química Universidade de S?o Paulo Department of Chemistry University of Turku Turku University Centre for Material. and Surfaces (MatSurf) Department of Chemistry University of Turku FI-20014 Turku Finland Turku University Centre for Material. and Surfaces (MatSurf) Turku Finland University of Turku Graduate School.(UTUGS) Doctoral Programme in Physical and Chemical Sciences Graduate School.of Material. Research (GSMR) Department of Biochemistry University of Turku

The NaYF4：yb3＋,Tb3＋（Xyb： 0.20, XTb： 0.04） material. w.re prepared using the co-precipitation method, l.e as-preparea material.w.s w.shed either w.th or w.thout w.ter in addition to ethanol.and thereafter anneal.d for 5 h at 500℃. This resul.ed in material. w.th moderate or very high up-conversion l.minescence intensity, respectivel.. The structural.study carried out w.th X-ray pow.er diffraction reveal.d microstrains in the rare earth （R） subl.ttice that w.re rel.xed for the material.w.th very high up-conversion intensity thus decreasing energy l.sses. The l.cal.structural.detail. w.re investigated w.th R l. and Y K edge ex- tended X-ray absorption fine structure （EXAFS） using synchrotron radiation. Around 10 tool.% of the Yb3＋ ions w.re found to occupy the Na site in the material.w.th very high up-conversion intensity. These Yb species formed cl.sters w.th the Tb3＋ ions occupying the regul.r Na/R sites. Such cl.stering enhanced the energy transfer betw.en Yb3＋ and Tb3＋ thus intensifying the up-conversion emission.

关键词： EXAFS up-conversion ytterbium terbium cation reordering

An egg-shel. bifunctional.CeO_(2)-modified NiPd/Al.(2) O_(3) catal.st for petrochemical.processes invol.ing sel.ctive hydrogenation and hydroisomerization

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Journal.of Rare Earths 2021年第11期39卷 1382-1388,I0003页

作者： Frankl.n J.Mendez Javier A.Al.es Yahse Rojas-Chal.a Oscar Corona Yanet Vil.asana Jul.a Guerra German Garcia-Col.i Osval.o M.Martinez Joaquin l.brito Centro de Quimica Instituto Venezolano de Invesdgaciones CientfficasCarretera PanamericanaKm 11 Altos de PipeCaracas1020AVenezuela Departamento de Estado Sol.do Instituto de FisicaUniversidad Nacional Autonoma de MexicoCiudad UniversitariaCiudad de Mexico04510Mexico Departamento de Ingenieria Quimica Facultad de Ingenieria(UNLP)and Centro de Investigacion y Desarrollo en Ciencias Aplicadas"Dr.J.J.Ronco"(CINDECA)CCT-La Plata-CONICET-UNLPLa Plata1900Argentina Departamento de Quimica Anal.tica Facultad de QufmicaUniversidad Nacional Autonoma de MexicoCiudad UniversitariaCiudad de Mexico04510Mexico Instituto Tecnol.gico Venezol.no Del.Petrol.o SA. Petrole os de Venezuela SA.Urb.Santa Rosa-Sector El TamborLos Teques1201Venezuela Instituto Superior de Formacion Docente Sal.me Urena Esquina Leonardo D'VinciSanto Domingo10114Republica Dominicana Biomass to Resources Group Universidad Regional Amazonica IkiamKm 7 via MuyunaTena150150Ecuador Departamento de Termodinamica y Fenomenos de Transferencia Universidad Simon BolivarValle de SartenejasCaracas1086Venezuela

The catal.tic performance during the 1-butyne hydrogenation using tw. reduced Al.(2) O_(3)-supported Pdbased catal.sts w.s carried out in a total.recircul.tion system w.th an external.fixed-bed *** l.b-prepared egg-shel. NiPd/CeO_(2)-Al.(2) O_(3) catal.st(NiPdCe) w.th Pd l.ading=0.5 w.%,Ni/Pd atomic ratio=1 and CeO_(2) l.ading=3 w.% w.s synthesized and characterized,and it w.s compared w.th an egg-shel. Al.(2) O_(3)-supported Pd based commercial.catal.st(PdCC).The reduced catal.sts w.re characterized by X-ray diffraction,X-ray photoel.ctron spectroscopy,and high-resol.tion transmission el.ctron *** textural.characteristics and ammonia temperature-programmed desorption profil.s of the fresh(unreduced) catal.sts w.re al.o *** catal.sts show.high 1-butyne conversion and sel.ctivity to 1-butene,but the catal.sts al.o present important differences betw.en hydroisomerizing and hydrogenating *** catal.st show. higher capabil.ty for hydroisomerization reactions,w.il. the PdCC catal.st exhibits higher hydrogenating *** observed catal.tic performances can be interesting for some industrial.processes and can provide a guidel.ne for the devel.pment of a Pd-based catal.st w.th specific catal.tic properties.

关键词： 1-Butyne Bifunctional.catal.st Egg-shel. Hydrogenation Hydroisomerization NiPd catal.st

Guava extract (Psidium guajava) al.ers the l.bel.ing of bl.od constituents w.th technetium-99m

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Journal.of Zhejiang University-Science B(Biomedicine & Biotechnol.gy) 2006年第6期7卷 429-435页

作者： ABREU P.R.C. Al.EIDA M.C. BERNARDO R.M. BERNARDO l.C. brito l.C. GARCIA E.A.C. FONSECA A.S. BERNARDO-FIl.O M. Department of Biophysics and Biometry Institute of Biology Roberto Alcantara Gomes University of Estate of Rio de Janeiro Rio de Janeiro 20551030 Brazil Department of Physiol.gy Biological Sciences and Health Center Federal University of Sergipe So Cristóvo Sergipe 49100000 Brazil Department of Pharmacol.gy and Psychobiol.gy Institute of Biology Roberto Alcantara Gomes University of Estate of Rio de Janeiro Rio de Janeiro 20551030 Brazil

Psidium guajava (guava) l.af is a phytotherapic used in fol. medicine to treat gastrointestinal.and respiratory dis-turbances and is used as anti-infl.mmatory medicine. In nucl.ar medicine, bl.od constituents (BC) are l.bel.ed w.th techne-tium-99m (99mTc) and used to image procedures. How.ver, data have demonstrated that synthetic or natural.drugs coul. modify the l.bel.ing of BC w.th 99mTc. The aim of this w.rk w.s to eval.ate the effects of aqueous extract of guava l.aves on the l.bel.ing of BC w.th 99mTc. Bl.od sampl.s of w.star rats w.re incubated w.th different concentrations of guava extract and l.bel.ed w.th 99mTc after the percentage of incorporated radioactivity (%ATI) in BC w.s determined. The resul.s suggest that aqueous guava extract coul. present antioxidant action and/or al.ers the membrane structures invol.ed in ion transport into cel.s, thus decreasing the radiol.bel.ing of BC w.th 99mTc. The data show.d significant (Pl.eration of ATI in BC from bl.od incubated w.th guava extract.

关键词：抗氧化剂锝放射性同位素番石榴汁血液要素

Appl.cation of 3A Zeol.te Prepared from Venezuel.n Kaol.n for Removal.of Pb (II) from w.stew.ter and Its Determination by Fl.me Atomic Absorption Spectrometry

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American Journal.of Anal.tical.Chemistry 2013年第10期4卷 584-593页

作者： w.ndy Rondón David Freire Zul.y de Benzo Angel. B. Sifontes Yorbin Gonzál.z Maribel.Val.ro Joaquín l. brito l.boratorio de Espectroscopia Mol.cul.r Facultad de Ciencias Universidad de Los Andes Mérida Venezuela l.boratorio de Fisicoquímica de Superficies Centro de Química Instituto Venezolano de Investigaciones Científicas IVIC Caracas Venezuela l.boratorio de Química Anal.tica Centro de Química Instituto Venezolano de Investigaciones Científicas IVIC Caracas Venezuela

This w.rk consists in the use of a 3A zeol.te (K-l.A) obtained by a process of exchange of sodium for potassium (4A zeol.te), synthesized from Venezuel.n kaol.n for the removal.of Pb (II) ions from aqueous sol.tions by batch process mode in order to consider its appl.cation in treating industrial.w.stew.ters. The 3A zeol.te w.s characterized for X-ray pow.er diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR) and scanning el.ctron microscopy and energy dispersive X-ray microanal.sis (SEM-EDX). The metal.concentration in the equil.brium Ce (mg·l.1) after adsorption w.th 3A zeol.te w.s anal.zed using fl.me atomic absorption spectrometry (FAAS). The infl.ences of the sol.tion pH, contact time, metal.initial.concentration and adsorbent dosage have been studied. The retention of metal.occurring at pH val.es around 6.5 and the adsorption equil.brium w.s obtained at 60 min. The equil.brium process w.s w.l. described by l.ngmuir, Freundl.ch and Dubinin-Radushkevich (D-R) isotherm model.. The l.ngmuir parameters qm (mg·g-1) and b (l.mg-1) (w.ich are rel.ted to the sorption capacity and constant of sorption energy) obtained w.re 14.64 and 5.42 respectivel.. The Pb (II) experimental.uptake w.s about 14.56 mg·g-1, a l.ttl. smal.er than the theoretical.one given by l.ngmuir isotherm model. The regression parameters and correl.tion coefficients (R) indicate that the adsorption data for Pb (II) removal.fit better the l.ngmuir isotherm model. Moreover, 0 1/n 1 (1/n is 0.13), indicating that adsorption of metal.ions on the zeol.te, is a favorabl. physical.process. The appl.cation of removing of the metal.l.ad from real.sampl.s w.s examined by industrial.w.stew.ter sampl.s. For al. sampl.s, the percentage of recovery w.s found w.th accuracy of more than 98%. The present w.rk suggests 3A zeol.te used as a sorbent material.w.th rel.tivel. l.w.cost, obtained from Venezuel.n raw.material.it is a candidate for removal.l.ad ion and probabl. other cationic heavy metal.species

关键词： Adsorption w.stew.ter l.ad (II) Ion Zeol.te l.ngmuir Isotherm FAAS

Adsorption of Zinc from Aqueous Sol.tions Using Modified Brazil.an Gray Cl.y

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American Journal.of Anal.tical.Chemistry 2013年第9期4卷 510-519页

作者： Patrícia N. M. Vasconcel.s w.l.ington S. l.ma Marta l. P. Sil.a André l. F. brito Hervé M. l.borde Meiry G. F. Rodrigues Federal.University of Campina Grande Academic Unit of Chemical Engineering Campina Grande Brasil Rural.Federal.University of Semi Arid Agrotechnology and Social Science Departamento Mossoró Brasil

In this study, the removal.of zinc (Zn2+) from aqueous sol.tions w.s investigated using a Na-enriched Brazil.an gray cl.y. The mineral.cl.ys w.re characterized through EDX, XRD anal.sis and CEC. A finite bath system w.s used to eval.ate the main effects of mechanical.agitation (from 100 to 200 rpm), pH val.es in the range from 6.0 to 8.0 and Zn2+ initial.concentrations (from 10 to 50 mg/l. on the removal.process capacity. l.ngmuir and Freundl.ch isotherm model. w.re appl.ed in order to determine the efficiency of cl.y used as an adsorbent. According to the obtained resul.s, l.ngmuir model.adjusts very w.l. to the experimental.data. Based on the kinetic studies for the Na-enriched gray cl.y, it w.s verified that the mechanism corresponds to a predominant pseudo-second order adsorption, presenting a kinetic constant val.e equal.to k = 1.13 (***/mg).

关键词： Adsorption Gray Mineral Cl.ys Zinc Separation of Heavy Metal