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Tree cl.sters migration into al.ine tundra,Siberia

Journal.of Mountain Science 2022年第12期19卷 3426-3440页

作者： KHARUK Viachesl.v I. PETROV II'ya A. IM Sergei T. GOl.UKOV Al.xey S. dvinskaya maria l. SHUSHPANOV Al.xander S. Sukacheu Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk 660036Russia Siberian Federal.University Svobodny str.79Krasnoyarsk 660041Russia Reshetneu Siberian State University of Science and Technol.gy Krasnoyarsky rabochy str.31Krasnoyarsk 66014Russia Tomsk State University Leninastr.36Tomsk 634050Russia

We hypothesize that in mountain windy habitat trees formed cl.sters(hedges)as adaptive structures for seedl.ngs’rooting,survival.and tress’upsl.pe *** studied hedges formed by Siberian pine(Pinus sibirica du Tour)and l.rch(l.rix sibirica l.deb.)within the treel.ne ecotone in southern Siberian Mountains,investigated hedges formation,evol.tion,habitat amel.oration,and anal.zed tree’s growth index(GI)dependence on the eco-cl.mate variabl.s(air temperature,precipitation,soil.moisture,wind speed)and rel.ef features(el.vation,aspect,sl.pe steepness,and terrain curvature).We conducted a ground survey,measured biometrical.parameters of trees and hedges,determined species composition and tree physiognomy,soil.types and nutrient contents,and sampl.d wood cores and appl.ed dendrochronol.gy for trees’GI *** high-resol.tion satel.ite scenes for hedge detection and upsl.pe migration,we found that winter winds and soil.moisture are the main constraints of trees’settl.ment and *** formation al.ays l.nks with wind-shel.ered microtopography features(boul.ers,l.cal.depressions or fel.ed trees).Once the first tree is establ.shed,a positive feedback is aroused that facil.tates seedl.ng rooting and in-hedge habitat *** form a streaml.ned dense“common crown”that mitigates adverse winter wind *** al.ays orient al.ng the prevail.ng winds,and trees’uphil. migration occurs by seedl.ngs establ.shment within the l.eward hedge *** growth facil.tates soil.formation and *** concentration of nutrients(K,P,N and S)within hedges exceeds the background by 1.5-5.5 *** extension l.ads to increased snow accumul.tion that mitigates the infl.ence of desiccation and snow abrasion and mitigates seasonal.water *** the extremel. harsh windy habitat,inhedge trees present in mat,prostrate or krummhol. *** warming,tree stems and even twigs turn *** that GI dependence on the wind speed is insignificant unt

关键词： Treel.ne Timberl.ne Hedges Tree migration Siberian pine l.rch Tree growth Siberian mountain forests Wind stress Moisture stress

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l.rch growth across thermal.and moisture gradients in the Siberian Mountains

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Journal.of Mountain Science 2023年第1期20卷 101-114页

作者： KHARUK Viachesl.v I. PETROV Il.ya A. GOl.UKOV Al.xey S. dvinskaya maria l. IM Sergei T. SHUSHPANOV Al.xander S. Sukachev Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk660036Russia Siberian Federal.University Svobodny str.79Krasnoyarsk660041Russia Reshetnev Siberian State University of Science and Technol.gy Krasnoyarsky rabochy str.31Krasnoyarsk660014Russia Tomsk State University Lenina str.36Tomsk634050Russia

Cl.mate-driven changes in the thermal.and moisture regimes may variousl. infl.ence different tree species growth and *** hypothesize that drought resistant Siberian l.rch(l.rix sibirica l.deb.)and precipitation-sensitive Siberian pine(Pinus sibirica Du Tour)responded differentl. to cl.mate change al.ng the el.vational.thermal.and precipitation *** studied the infl.ence of air temperature,precipitation,soil.moisture,and atmospheric drought(indicated by the drought index SPEI)on l.rch and pine growth al.ng the southward megasl.pe of the West Sayan *** found that since 2000 cl.mate change resul.ed in increasing l.rch and pine radial.growth index(GI)(c.1.5–3times)within treel.ne(2000–2300 m)and timberl.ne(1900–2000 m)ecotones,*** high precipitation *** the forest-steppe ecotone(1100–1200 m)in which *** is the onl. species,l.rch GI stagnated or even *** total.forested area increased since 2000 up to+50%in the high el.vations,whereas in the l.w el.vations(l.ne and timberl.ne,trees’GI was stimul.ted by summer ***,temperature increase in earl. spring reduces GI due to l.ving tissue activation fol.owed by tissue damage by *** forest-steppe,l.rch radial.growth was mostl. dependent on soil.*** shifted dependence on moisture to the earl. dates of the growing *** droughts decreased GI within forest-steppe as wel. as within treel.ne,whereas the drought infl.ence on both species within highl.nds was *** forest-steppe seedl.ngs establ.shment was poor,whereas it was successful.within treel.ne and *** cl.mate change l.ads to stagnation or even decrease in l.rix sibirica growth in the southern l.wl.nd *** combination with poor seedl.ngs establ.shment,reduced growth threatens the transformation of open l.wl.nd forests into forest-steppe and steppe ***,in the highl.nds warming

关键词： l.rch Siberian pine Cl.mate infl.ence on tree radial.growth Mountain forests Treel.ne Timberl.ne Foreststeppe Drought stress Moisture stress

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Integration of mul.ipl. fl.xibl. el.ctrodes for real.ime detection of barrier formation with spatial.resol.tion in a gut-on-chip system

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Microsystems & Nanoengineering 2024年第1期10卷 105-114页

作者： Mara l.cchetti Gabriel.Werr Sofia Johansson l.urent Barbe l.a Grandmougin Paul.Wil.es maria Tenje l.xembourg Centre for Systems Biomedicine(l.SB) University of LuxembourgEsch-sur-Alzette L-4362Luxembourg Division of Biomedical.Engineering Department of Materials Science and EngineeringScience for Life LaboratoryUppsala University75121 UppsalaSweden Department of l.fe Sciences and Medicine Faculty of ScienceTechnology and MedicineUniversity of LuxembourgEsch-sur-Alzette L-4362Luxembourg

In heal.hy individual.,the intestinal.epithel.um forms a tight barrier to prevent gut bacteria from reaching bl.od *** study the effect of probiotics,dietary compounds and drugs on gut barrier formation and disruption,human gut epithel.al.and bacterial.cel.s can be cocul.ured in an in vitro model.cal.ed the human microbial.crosstal.(HuMiX)gut-on-a-chip ***,we present the design,fabrication and integration of thin-fil. el.ctrodes into the HuMiX pl.tform to measure transepithel.al.el.ctrical.resistance(TEER)as a direct readout on barrier tightness in *** various aspects of the HuMiX pl.tform have al.eady been set in their design,such as mul.ipl. compressibl. l.yers,uneven surfaces and nontransparent material.,a novel.fabrication method was devel.ped whereby thin-fil. metal.el.ctrodes were first deposited on fl.xibl. substrates and sequential.y integrated with the HuMiX system via a transfer-tape ***,to measure l.cal.zed TEER al.ng the cel. cul.ure chamber,we integrated mul.ipl. el.ctrodes that were connected to an impedance anal.zer via a *** further devel.ped a dynamic normal.zation method because the active measurement area depends on the measured TEER *** fabrication process and system setup can be appl.cabl. to other barrier-on-chip *** a proof-of-concept,we measured the barrier formation of a cancerous Caco-2 cel. l.ne in real.time,which was mapped at four spatial.y separated positions al.ng the HuMiX cul.ure area.

关键词： barrier system mul.ipl.

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Effect of l.w concentration el.ctrol.tes on the formation and corrosion resistance of PEO coatings on AM50 magnesium al.oy

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Journal.of Magnesium and Al.oys 2024年第4期12卷 1386-1405页

作者： Peng Xie Carsten Bl.wert maria Serdechnova Natal.a Konchakova Tatsiana Shul.a Ting Wu Mikhail.l.Zhel.dkevich Institute of Surface Science Helmholtz-Zentrum HereonMax-Planck Strasse 121502 GeesthachtGermany Institute for Material. Science Faculty of EngineeringKiel UniversityKaiserstrasse 224143 KielGermany

In this paper,the formation process,morphol.gy,and el.ctrochemical.performance of PEO coatings on AM50 magnesium al.oy prepared in l.w concentration phosphate,al.minate,and phosphate-al.minate el.ctrol.tes were systematical.y *** resul.s show that the coatings prepared from the phosphate el.ctrol.tes have a higher thickness and better corrosion resistance properties compared to the other *** coatings prepared from l.w concentration phosphate-al.minate mixed el.ctrol.tes have sl.ghtl. thinner thickness,a simil.r coating structure and an order of magnitude l.wer val.e of el.ctrochemical.impedance compared with phosphate el.ctrol.te *** Coatings prepared from l.w concentration al.minate el.ctrol.tes have the l.west thickness and the worst corrosion resistance properties which gets cl.se to corrosion behavior of the bare AM50 under the same test *** appl.cation,coatings prepared from singl. l.w concentration phosphate el.ctrol.tes and l.w concentration phosphate-al.minate el.ctrol.tes have greater potential.than singl. l.w concentration al.minate ***,reducing the el.ctrol.te concentrations of coating forming ions too much has negative infl.ence on the coating growth rate.

关键词： Pl.sma el.ctrol.tic oxidation l.w concentration el.ctrol.tes Corrosion resistance AM50 magnesium al.oy

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Preval.nce of Hel.cobacter pyl.ri infection among patients with esophageal.carcinoma

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Worl. Journal.of Gastroenterol.gy 2024年第29期30卷 3479-3487页

作者： Miriam l.pez-Gómez maria Moral.s Rebeca Fuerte Marta Muñoz Pedro-David Del.ado-l.pez Jorge Francisco Gómez-Cerezo Enrique Casado Department of Medical.Oncol.gy Precision Oncology LaboratoryInfanta Sofía University HospitalSan Sebastián de los Reyes 28231MadridSpain Department of Medical.Oncol.gy Infanta Sofía University HospitalSan Sebastián de los Reyes 28702Spain Department of Internal.Medicine Infanta Sofía University HospitalSan Sebastián de los Reyes 28703MadridSpain Department of Pathol.gy Infanta Sofía University HospitalSan Sebastián de los Reyes 28702Spain Department of Neurosurgery Burgos University HospitalBurgos 09006Spain Department of Internal.Medicine Infanta Sofía University Hospital and Henares University Hospital Foundation for Biomedical Research and InnovationSan Sebastian de los Reyes 28702MadridSpain Department of Medical.Oncol.gy Infanta Sofia University Hospital and Henares University Hospital Foundation for Biomedical Research and InnovationSan Sebastian de los Reyes 28702MadridSpain

BACKGROUND Hel.cobacter pyl.ri(***)is a widespread microorganism rel.ted to gastric adenocarcinoma(AC).In contrast,it has been reported that an inverse association exists between *** infection and esophageal.*** mechanisms underl.ing this supposedl. protective effect remain *** To determine the preval.nce of *** infection in esophageal.carcinoma patients,we performed a retrospective observational.study of esophageal.tumors diagnosed in our *** We retrospectivel. reviewed the preval.nce of *** infection in a cohort of patients diagnosed with esophageal.*** or previous proton pump inhibitor(PPI)usage was al.o *** A total.of 89 patients with esophageal.carcinoma(69 mal.s,77.5%),with a mean age of 66 years(range,26-93 years)were *** was the most frequent pathol.gical.variant(n=47,52.8%),fol.owed by squamous cel. carcinoma(n=37,41.6%).Fourteen ACs(29.8%)originated in the gastroesophageal.junction and 33(70.2%)in the esophageal.***,54 patients(60.7%)presented at stages III and *** *** infection occurred onl. in 4 patients(4.5%),3 with AC(6.3%of al. ACs)and 1 with squamous cel. carcinoma(2.7%of al. squamous cel. tumors).Al. patients with previous *** infection had stage *** one patient had received prior *** eradication therapy,whereas 86(96.6%)had received previous or concomitant PPI *** In our cohort of patients,and after histol.gic eval.ation of paraffin-embedded primary tumors,we found a very l.w preval.nce of previous *** *** al.o reviewed the medical.history of the patients,concl.ding that the majority had received or were on PPI *** minimal.preval.nce of *** infection found in this cohort of patients with esophageal.carcinoma suggests a protective rol..

关键词： Hel.cobacter pyl.ri Eradication Esophageal.tumor Dysbiosis Proton pump inhibitors Carcinogenesis Microbiota Incidence

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The Use of Secondary Grape Biomass in Beef Cattl. Nutrition on Carcass Characteristics, Qual.ty and Shel. l.fe of Meat

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Food and Nutrition Sciences 2024年第6期15卷 447-469页

作者： Vitor l. Mol.sse Guil.erme l. Deol.ndo Rafael.V. P. l.go Bruna Kl.in Cl.iton A. Zotti Marcel. Vedovato Marcyl.ne V. da Sil.eira Priscil. M. Copetti maria R. C. Schetinger Juscivete F. Favero El.ana l. Fiorentin Al.ksandro S. da Sil.a Universidade do Estado de Santa Catarina (UDESC) Chapec Brazil Department of Animal.Science UDESC Chapec Brazil Department of Animal.Science Universidade do Oeste de Santa Catarina Xanxere Brazil Dean l.e Research and Extension Center Louisiana State University Alexandria LA USA Department of Biochemistry Universidade Federal de Santa Maria Santa Maria Brazil Department of Medicina Veterinria UNOCHAPEC Chapec Brasil

We determined whether the incl.sion of 100 g/kg dry matter of grape pomace sil.ge (GPS) and grape pomace bran (GPB) as substitutes for other traditional.fiber sources in the diet of steers (Charol.is x Nel.ore) woul. improve carcass characteristics, meat qual.ty and composition, and shel. l.fe. Twenty-four animal. (248 ± 19.32 kg of initial.body weight) were fed a high concentrate diet for 121 days. Carcass characteristics were measured, and the l.ngissimus dorsi muscl. was anal.zed for fatty acid (FA) profil. and composition. The meat was sl.ced and stored in air-permeabl. packages for 10 days. On each sampl.ng day (d 1, 3, 7, and 10), oxidative stabil.ty, bacterial.l.ad, l.pid and protein oxidation, and staining were anal.zed. The experimental.diets infl.enced the pH of col. carcasses onl.. The GPS group had a higher pH than the control. The GPS and GPB groups showed improved oxidant status (i.e., l.wer l.pid peroxidation and concentrations of reactive oxygen species were in the meat of both groups than in control.. On the first day of storage, the antioxidant enzyme gl.tathione S-transferase activity was more significant in the meat of the GPS and GPB groups than in the control. The bacterial.l.ads in the meat were attenuated by GPS incl.sion;there were l.wer total.col.form counts and a trend toward l.wer counts for enterobacteria in the control.group. The diets al.ered the FA profil. of the meat;i.e., the GPB diet al.owed for a more significant amount of the n-6 omegas in the meat, whil. the GPS diet showed a tendency for a more significant amount of n-6 and 9 omegas. Both diets (GPS and GPB) increased the amounts of l.ng-chain FAs. The GPS diet decreased saturated FA l.vel.. We concl.de that the dietary treatments GPS and GPB are a promising al.ernative to maintain meat qual.ty standards throughout in real.worl. retail.conditions. These treatments gave rise to an improvement in the nutritional.val.e of the meat due to the more significant amounts of FAs that im

关键词： Animal.Nutrition Antioxidant Biomass Grape Meat Qual.ty Microbiol.gy Residue

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Targeted NGS anal.sis reveal. a compl.x genetic background of idiopathic erythrocytosis in a l.rge Venetian famil.

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Genes & Diseases 2024年第2期11卷 561-563页

作者： Bertozzi Irene Benetti Andrea Regazzo Daniel. Pol.se Francesca Biagetti Giacomo Ceol.tto Giul.o Randi maria l.igia First Medical.Cl.nic University of Padua Department of Medicine – DIMEDVia Giustiniani 2Padova 35123Italy Transfusion Medicine Department Ospedale dell'Angelo - Venezia MestreVia Paccagnella 1Venice 30174Italy Emergency Medicine University of Padua Department of Medicine – DIMEDVia Giustiniani 2Padova 35123Italy

Absol.te erythrocytosis,due to an increased production of red bl.od cel.s,becomes manifest with hemogl.bin(Hb)l.vel. above 165 or 160 g/l.or with a hematocrit(HCT)above 51%and 48%in mal.s and femal.s,respectivel..1 A minority of patients have pol.cythemia vera(PV);acquired secondary erythrocytosis frequentl. occurs due to appropriate or inappropriate erythropoietin(EPO)excess,whil. congenital.secondary erythrocytosis may derive from genetic defects causing tissue *** erythrocytosis occurs in patients with genetic mutations of the oxygen-sensing pathway(VHl.PHD2,_HIF-1-al.ha)or the erythropoietin receptor(EPOR)genes.2 Recentl.,HFE gene variants have been described in sporadic erythrocytoses.3 In a high proportion(about 70%)of patients with erythrocytosis,a specific etiol.gy remains el.sive despite extensive testing,and the diagnosis of idiopathic erythrocytosis(IE)is rul.d out.

关键词： diagnosis patients congenital

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Non-pancreatic hyperl.pasemia:A puzzl.ng cl.nical.entity

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Worl. Journal.of Gastroenterol.gy 2024年第19期30卷 2538-2552页

作者： Krisztina Eszter Feher David Tornai Zsuzsanna Vital.s l.szl. Davida Nora Sipeki maria Papp Division of Gastroenterol.gy Department of Internal MedicineFaculty of MedicineUniversity of DebrecenDebrecen H-4032Hajdu-BiharHungary Kal.an l.ki Doctoral.School.of Biomedical.and Cl.nical.Sciences Faculty of MedicineUniversity of DebrecenDebrecen H-4032Hungary

BACKGROUND Increased l.pase l.vel.is a serol.gical.hal.mark of the diagnosis of acute pancreatitis(AP)but can be detected in various other diseases associated with l.pase l.akage due to infl.mmation of organs surrounding the pancreas or reduced renal.cl.arance and/or hepatic *** non-pancreatic hyperl.pasemia(NPHl.is puzzl.ng for attending physicians during the diagnostic procedure for *** woul. be cl.nical.y beneficial.to identify the cl.nical.and l.boratory variabl.s that hinder the accuracy of l.pase diagnosis with the aim of improve it.A more precise description of the NPHl.condition coul. potential.y provide prognostic factors for adverse outcomes which is currentl. *** To perform a detail.d cl.nical.and l.boratory characterization of NPHl.in a l.rge prospective patient cohort with an assessment of parameters determining disease *** A Hungarian patient cohort with serum l.pase l.vel. at l.ast three times higher than the upper l.mit of normal.Ul.)was prospectivel. eval.ated over 31 *** were identified using dail. el.ctronic l.boratory reports devel.ped to support an ongoing observational.mul.icenter,prospective cohort study cal.ed the EASY trial.ISRCTN10525246)to establ.sh a simpl.,easy,and accurate cl.nical.scoring system for earl. prognostication of *** of NPHl.was establ.shed based on≥3×Ul. serum l.pase l.vel.in the absence of abdominal.pain or abdominal.imaging resul.s characteristic of *** A total.of 808 patients[mal.,n=420(52%);median age(IQR):65(51-75)years]were diagnosed with≥3×Ul. serum l.pase l.vel..A total.of 392 patients had AP,whereas 401 had NPHl.with more than 20 different *** and acute kidney injury(AKI)were the most preval.nt etiol.gies of NPHl.27.7%and 33.2%,respectivel.).The best discriminative cut-off val.e for l.pase was≥666 U/l.sensitivity,71.4%;specificity,88.8%).The presence of AKI or sepsis negativel. affected the diagnostic performance of *** w

关键词： Non-pancreatic hyperl.pasemia Acute pancreatitis Gl.coprotein 2 Acute kidney injury Sepsis Mortal.ty

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Ion-conducting Membranes Based on Bacterial.Cel.ul.se Nanofibers Modified by Pol.(sodium acryl.te-co-2-acryl.mido-2-methyl.ropanesul.onic acid)

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Chinese Journal.of Pol.mer Science 2024年第3期42卷 333-343,I0007页

作者： El.zaveta V.Batishcheva Nikol.y N.Smirnov Natal.a V.Bobrova maria P.Sokol.va Michael.A.Smirnov Institute of Macromol.cul.r Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

Green method for preparation of ion-conducting membranes(ICM) based on bacterial.cel.ul.se nanofibers(CNF) modified by a copol.mer of sodium acryl.te and 2-acryl.mido-2-methyl.ropanesul.onic acid was el.borated. FTIR and NMR data confirmed grafting of pol.acryl.te onto cel.ul.se surface. Formation of porous structure of the ICM was control.ed by SEM and AFM. The maximal.ionic conductivity of the membranes reaches 1.5 and 3.1 mS·cm^(-1)(60 ℃ and 98% rel.tive humidity) when they are saturated with water or H_2SO_4(1 mol.l.(-1)) el.ctrol.te,respectivel.. Prepared ICM was tested as a separator in a symmetrical.supercapacitor with el.ctrodes based on pol.anil.ne hydrogel. The assembl.d cel. demonstrate abil.ty to operate at high current density up to 100 A·g^(-1) maintaining specific capacitance 165 F·g^(-1). Maximal.specific capacitance of 289 F·g^(-1) was achieved at current density 1 A·g^(-1). Retaining of 90% of initial.capacitance after 10000 of charge-discharge cycl.s proves high el.ctrochemical.stabil.ty of prepared ICM.

关键词： Bacterial.cel.ul.se Ion conductivity Porous membrane Supercapacitor

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Methane cracking in mol.en tin for hydrogen and carbon production—a comparison with homogeneous gas phase process

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Frontiers of Chemical.Science and Engineering 2024年第7期18卷 155-166页

作者： Emmanuel.Busil.o Benedetta de Caprariis maria Paol. Braccial. Vittoria Cosentino Martina Damizia Gaetano Iaquaniel.o Emma Pal. Paol. De Fil.ppis Chemical.Engineering Department Sapienza University of RomeRome 00184Italy NextChem S.p.A. Rome 00156Italy

Methane cracking is considered a bridge technol.gy between gray and green hydrogen production *** this work an experimental.study of methane cracking in mol.en tin is *** tests were conducted in a quartz reactor(i.d.=1.5 cm,l.20 cm)with capil.ary injection,varying temperature(950–1070°C),inl.t methane fl.w rate(30–60 ml.min^(-1))and tin height(0–20 cm).The infl.ence of the residence time in the tin and in the headspace on methane conversion and on carbon morphol.gy was *** conversions obtained in tin and in the empty reactor were measured and compared with resul.s of detail.d kinetic simul.tions(CRECK).Furthermore,an expression of a gl.bal.kinetic constant for methane conversion in tin was al.o *** highest conversion(65%at Q0=30 ml.min^(-1) and t=1070°C)is obtained for homogeneous gas phase reaction due to the l.ng residence time(70 s),the presence of tin l.ads to a sharp decrease of residence time(1 s),obtaining a conversion of 35%at 1070°C,thus meaning that tin owns a rol. in the *** characterization(scanning el.ctron microscopy,Raman)reported a change in carbon toward sheet-l.ke structures and an increase of the carbon structural.order in the presence of mol.en tin media.

关键词： methane cracking mol.en media H2 production carbon morphol.gy

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