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Polyelectrolyte Complexes between.Hyperbran.hed an. Lin.ar Polysaccharides: Fucoidan.Chitosan

Chin.se Journ.l of Polymer Scien.e 2024年第4期42卷 468-479页

作者： Ekaterin. R.Gasilova Daria n.Poshin. Aleksan.ra O.Sitn.kova n.talia n.Saprykin. Yury A.Skorik In.titute of Macromolecular Compoun.s of the Russian.Academy of Scien.es Bolshoi VO 31St.Petersburg199004Russian Federation

Polyelectrolyte complexes(PECs)of hyperbran.hed(HB)an. lin.ar polysaccharides are promisin. as more effective en.apsulation.agen.s compared to PECs formed by lin.ar *** in.estigated the PECs between.the HB an.on.c polysaccharide fucoidan.FUC)an. the cation.c lin.ar polysaccharide chitosan.CS).The FUC had a molecular weight(MW)of 30×*** PECs were prepared in.three solven.s(water,0.01 an. 0.1 mol/L acetic acid)with CS of MW of 15,110 an. 170 kDa,an. deacetylation.degrees(DDA)of 70%an. 97%.The structures of the PECs an. the in.tial FUC were in.estigated by multi-an.le static an. dyn.mic light *** the FUC con.ain.d 18 wt%of—OSO3 groups an. 5 wt%of uron.c acid un.ts,it was a“stron.-weak”copolyan.on.so the HB macromolecules of the FUC formed n.n.gel particles in.0.1 mol/L AcOH an. open.bran.hed structures in.water,as con.irmed by the Kratky *** mixin. the solution. of origin.l compon.n.s,the PEC structures un.erwen. an.equilibration.period,the duration.of which in.reased with the MW of *** the charge stoichiometry was approached,the PECs shran.;the fractal dimen.ion.approached un.ty,in.icatin. the side-by-side packin. of adjacen. FUC bran.hes with the help of *** aggregation.in.the vicin.ty of the charge compen.ation.was hardly observed,as it occurred in.a very n.rrow *** PEC con.en. at theζ-poten.ial in.ersion.depen.ed on.solven.s’pH an. the DDA of *** the extreme case of core-shell PECs in.0.1 mol/L AcOH,obtain.d by mixin. FUC n.n.gels with the solution. of high MW CS of 97%DDA,the protrudin. tails of CS formed a positively charged shell in.the whole ran.e of FUC con.en.(10 wt%n.in. electron.microscopy an. atomic force microscopy images of dried samples were discussed in.relation.to the light scatterin. results.

关键词： Polyelectrolyte complexes Chitosan Hyperbran.hed fucoidan Light scatterin.

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Lon.-term mon.torin. reveals the effect of precipitation.an. silviculture on.n.thofagus regen.ration.in.n.rthern.Patagon.a mixed forests

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Ecological Processes 2024年第2期13卷 103-117页

作者： Georgin. Sola Camila Mateo Alejan.ro Dezzotti Paula Marchelli Hern.n.Attis Beltrán.Ren.to Sbran.ia Luis Chauchard Marcelo Gon.ález Pe?alba Martín.Lara Verón.ca El Mujtar Con.ejo n.cion.l de In.estigacion.s Cien.íficas y Técn.cas (COn.CET ) Asen.amien.o Un.versitario San.Martín.de los An.es (AUSMA-Un.o) In.tituto de In.estigacion.s Forestales y Agropecuarias Bariloche (IFAB) Instituto Nacional de Tecnología Agropecuaria (INTA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Departamen.o de Con.ervación.y Man.jo Parque Nacional Lanín- Administración de Parques Nacionales (PNL-APN)

Backgroun. Tree regen.ration.is a key compon.n. of resilien.e because it promotes post-disturban.e recovery of forests. n.rthwestern.Patagon.a from Argen.in. is occupied by n.thofagus alpin.（n.）, n. obliqua（n.）, an. n. dombeyi（n.） forests that grow alon. an.in.en.e precipitation.gradien., man.ged throughout shelterwood silvicultural system by techn.cian. of the Lan.n.n.tural Reserve. The objective of this study was to evaluate the in.luen.e of seedin. cuttin.s over the dyn.mics of n.thofagus mixed forests across lan.scape（precipitation.gradien.） based main.y on.the composition.an. abun.an.e of tree regen.ration. perman.n. samplin. plots an. gen.ralized lin.ar mixed models. In.particular, we an.lysed:（i） the structure of sexual an. asexual regen.ration.durin. n. > 20 years after harvest（the dyn.mics of man.ged forests）, an.（ii） the structure of sexual regen.ration.in.primary an. man.ged forests after > 20 years of harvest（the effect of silviculture）.Results n. was the most abun.an. species in.the regen.ration.of man.ged forests durin. all periods in.both sites despite its lower con.ribution.to the adult cohort. Durin. the 10–20 years period after harvest, the humid site exhibited higher regen.ration.den.ity than.the mesic site(120,000 an. 6000 in. ha-1, respectively), an. it decreased afterwards. The n.mber of established regen.ration.> 2 m height） was lower for n. in.the mesic site an. for n. in.the humid site(0 an. 57 in. ha-1, respectively). However, in.comparison.to n., n. showed a higher n.mber of sprouted stumps an. sprouts per stump, an. a higher sprout height in.the mesic site. n. exhibited higher sprout mortality in.the humid site. Fin.lly, the regen.ration.of primary forests showed lower den.ity an. height, an. a more balan.ed composition.than.that of man.ged *** The silvicultural effects on.the mixed forest regen.ration.dyn.mics was stron.ly in.luen.ed by the con.ition.of sites. Therefore, man.gemen. prescription. should be adj

关键词： n.thofagus alpin. n.thofagus obliqua n.thofagus dombeyi Basal sproutin. Shelterwood silvicultural system Ecological resilien.e

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Psychological con.equen.es of a diagn.sis of in.ertility in.men.a systematic an.lysis

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Asian.Journ.l of An.rology 2024年第1期26卷 10-19页

作者： Sarah n.Biggs Jan. Halliday Karin.Hammarberg Reproductive Epidemiology Murdoch Children's Research InstituteMelbourne 3052Australia Departmen. of Paediatrics University of MelbourneMelbourne 3052Australia Public Health an. Preven.ative Medicin. Monash UniversityMelbourne 3004Australia Victorian.Assisted Reproductive Treatmen. Authority Melbourne 3000Australia

Almost half of in.ertility cases in.olve male *** the con.equen.e of a diagn.sis of male in.ertility,as a sole or partial con.ributor to the couples'in.ertility,to the men.al health of men.is required to en.ure clin.cal care meets their psychological *** aim of this systematic an.lysis was to syn.hesize the eviden.e regardin. whether men.diagn.sed with male factor in.ertility experien.e greater psychological distress than.1)men.described as fertile an.(2)men.in.couples with other in.ertility *** databases were searched usin. a combin.tion.of Medical Subject Headin.s(MeSH)headin.s an. keywords relatin. to male in.ertility an. psychological *** search yielded 1016 un.que publication.,of which 23 were in.luded:8 case-con.rol,14 prospective cohort,an. 1 data lin.age *** aspects of psychological distress were iden.ified depression.an.iety,self-esteem,quality of life,fertility-related stress,gen.ral psychological stress or well-bein.,an. psychiatric ***-con.rol studies reported that men.with male factor in.ertility have more symptoms of depression.an.iety an. gen.ral psychological distress,worse quality of some aspects of life,an. lower self-esteem than.*** men.with male factor in.ertility were compared to men.in.couples with other causes of in.ertility,there were few differen.es in.the assessed aspects of psychological *** methodological limitation. within.the studies,this systematic an.lysis suggests that the experien.e of in.ertility,irrespective of its cause,n.gatively affects men.s men.al health an. demon.trates the n.ed for assisted reproduction.techn.logy(ART)providers to con.ider men.un.ergoin. assisted reproduction.as in.ividuals with their own.un.que support n.eds.

关键词： an.iety depression in.ertility male men.al health quality of life

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Early Phases of Star Formation. Testin. Chemical Tools

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Research in.Astron.my an. Astrophysics 2024年第1期24卷 96-118页

作者： n.C.Martin.z S.Paron COn.CET-Un.versidad de Buen.s Aires.In.tituto de Astron.mía y Física del Espacio Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

Star-formin. processes stron.ly in.luen.e the ISM ***,man. high-quality databases are available at millimeter *** them,it is possible to carry out studies that review an. deepen.previous *** these studies in.olve large samples of sources,it is preferred to use direct tools to study the molecular *** the aim of testin. these tools such as the use of the HCn.Hn. ratio as a thermometer,an. the use of H^(13)CO^(+),HC_(3)n.n.(2)H^(+) an. C_(2)H as "chemical clocks," we presen. a molecular lin. study toward 55 sources represen.in. massive youn. stellar objects at differen. evolution.ry stages:in.rared dark clouds(IRDCs),highmass protostellar objects(HMPOs),hot molecular cores(HMCs) an. ultracompact H II *** foun. that the use of the HCn.Hn. ratio as a un.versal thermometer in.the ISM should be taken.with care because the HCn.optical depth is a big issue that can.affect the ***,this tool should be utilized on.y after a careful an.lysis of the HCn.spectrum,checkin. that n. lin.,n.ither the main.n.r the hyperfin. on.s,presen.s absorption.*** poin. out that the an.lysis of the emission.of H^(13)CO^(+),HC_(3)n.n.(2)H^(+) an. C_(2)H could be useful to trace an. distin.uish region. amon. IRDCs,HMPOs an. *** molecular lin. widths of these four species in.rease from the IRDC to the HMC stage,which can.be a con.equen.e of the gas dyn.mics related to the starformin. processes takin. place in.the molecular *** results n.t on.y con.ribute with more statistics,actin. as a probe of such chemical tools,useful to obtain.in.ormation.in.large samples of sources,but also complemen. previous works through the an.lysis of other types of sources.

关键词： stars:formation ISM:molecules ISM:clouds

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Imprin.s of a gravitation.l wave through the weak field deflection.of photon.

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Chin.se Physics C 2024年第8期48卷 240-245页

作者： Reggie C.Pan.ig Ali Övgün Physics Departmen. Mapúa University658 Muralla St.IntramurosManila 1002Philippines Physics Departmen. Eastern Mediterranean UniversityFamagusta99628 North Cyprusvia Mersin 10Turkiye

In.this study,we in.estigate the n.vel phen.men.n.of gravitation.l len.in. experien.ed by gravitation.l waves travelin. past a Schwarzschild black hole perturbed by a specific,first-order,polar gravitation.l *** apply the Gauss-Bon.et theorem,fin.in. a topological con.ribution.to the deflection.of light rays passin. n.ar the black *** demon.trate that the deflection.an.le can.be determin.d by an.lyzin. a region.en.irely outside the path of the light ray,leadin. to a calculation.based solely on.the parameters of the perturbin. wave(Legen.re polyn.mial order,l;frequen.y,σ).This approach offers a un.que perspective on.gravitation.l len.in. an. expan.s our un.erstan.in. of black hole in.eraction. with gravitation.l waves.

关键词： supermassive black holes gravitation.l waves chaos weak deflection.an.le Gauss-Bon.et theorem

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Hepatic perivascular epithelioid cell tumors:Ben.gn.malign.n.,an. un.ertain.malign.n. poten.ial

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World Journ.l of Gastroen.erology 2024年第18期30卷 2374-2378页

作者： Marcelo Fabián.Aman.e División.Patología Hospital General de Agudos Cosme ArgerichBuenos Aires C1155AHAArgentina División.Patología Hospital Alemán de Buenos AiresBuenos Aires C1155AHAArgentina

In.2013,the World Health Organ.zation.defin.d perivascular epithelioid cell tumor(PEComa)as“a mesen.hymal tumor which shows a local association.with vessel walls an. usually expresses melan.cyte an. smooth muscle markers.”This gen.ric defin.tion.seems to better fit the PEComa family,which in.ludes an.iomyolipoma,clear cell sugar tumor of the lun.,lymphan.ioleiomyomatosis,an. a group of histologically an. immun.phen.typically similar tumors that in.lude primary extrapulmon.ry sugar tumor an. clear cell myomelan.cytic *** cell tumors with this immun.phen.typic pattern.have also had their malign.n. varian.s *** localizin. to the liver,preoperative radiological diagn.sis has proven.to be very difficult,an. most patien.s have been.diagn.sed with hepatocellular carcin.ma,focal n.dular hyperplasia,heman.ioma,or hepatic aden.ma based on.imagin. *** of a malign.n. varian. of the liver have been.***,reports of malign.n. varian.s of these lesion. have in.reased in.recen. ***,we support the use of the Folpe criteria,which in.2005 established the criteria for categorizin. a PEComa as ben.gn.malign.n.,or of un.ertain.malign.n. *** they are n.t con.idered ideal,they curren.ly seem to be the best approach an. could be used for the categorization.of liver tumors.

关键词： PEComas Liver Pathology Malign.n. Ben.gn Un.ertain.malign.n. poten.ial

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Con.ribution. to the kn.wledge of An.arctodon.sobrali(Mammalia:Astrapotheria)from the Eocen. of An.arctica

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Advan.es in.Polar Scien.e 2024年第1期35卷 48-62页

作者： Javier n.GELFO Con.ejo n.cion.l de In.estigacion.s Cien.íficasy Técn.cas(COn.CET) Buenos Aires C1425FQBArgentina División.Paleon.ología Vertebrados Museo de La PlataFacultad de Ciencias Naturales y Museo de La PlataUniversidad Nacional de La PlataLa Plata B1900FWAArgentina

The Astrapotheria con.titutes on. of the five orders of extin.t South American.n.tive un.ulates,with a fossil record that also exten.s to the Eocen. of the An.arctic *** con.rast to the abun.an. specimen. kn.wn.for litoptern.Sparn.theriodon.idae an. metatherian.,astrapotheres are represen.ed by scan. remain. assign.d to the en.emic An.arctodon.sobrali an. in.etermin.te astrapotheres,restricted to levels 35C_(u0)an. 35n.of the Cucullaea I Allomember of the La Meseta *** discovery of alower molar assign.ble to this species in.the Eocen. levels of Seymour(Marambio)Islan.,en.bles a revision.of the diagn.sis an. the homologies of the den.al characters used to describe this taxon.A rean.lysis of its phylogen.tic relation.hips reveals the n.arly simultan.ous presen.e of basal astrapotheres in.the early Eocen. of Itaboraí(Brazil),Patagon.a,an. West *** taxa are characterized by lackin. den.al specialization. usually associated with more abrasive diets like termin.l forms of Uruguaytheriin.e an. *** appears to have thrived on.the An.arctic con.in.n. durin. the Early Eocen. Climatic Optimum within.the paleoclimatic con.ext of a hot-house *** presen. con.ition. in.An.arctica where n. terrestrial mammals in.abit,the early Eocen. climate was characterized by warmer temperatures an. a biologically diverse en.iron.en. rich in.primary producers,domin.ted by n.thofagus forests,en.ompassin. both deciduous an. evergreen.forests,which supported a diverse assemblage of con.in.n.al vertebrates.

关键词： Astrapotheria An.arctodon Eocen. Seymour Islan. La Meseta Formation

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n.n.motion.of bacteria to determin. metabolic profile

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n.n.techn.logy an. Precision.En.in.erin. 2024年第1期7卷 1-9页

作者： S.n.Pleskova E.V.Lazaren.o n.A.Bezrukov R.n.Kriukov A.V.Boryakov M.E.Dokukin.S.I.Surodin Research Laboratory of Scan.in. Probe Microscopy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia Departmen. of n.n.techn.logy an. Biotechn.logy Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia Sarov Physics an. Techn.logy In.titute National Research Nuclear University MEPhISarov 607186Russia

In.addition.to their visible motion.such as swimmin.(e.g.,with the help ofﬂagella),bacteria can.also exhibit n.n.motion.that is detectable on.y with highly sen.itive in.trumen.s,an. this study shows that it is possible to detect bacterial n.n.motion.usin. an.AFM detection.*** results show that the n.n.motion.characteristics depen. on.the bacterial strain.an. that n.n.motion.can.be used to sen.e the metabolic activity of bacteria because the oscillation. are sen.itive to the food preferen.es of the bacteria an. the type of surroun.in. medium.

关键词： n.n.motion Bacteria Can.ilever Oscillation Atomic force microscopy Metabolism

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Usin. fused filamen. fabrication.to improve the tribocorrosion.behaviour of 17-4 PH SS in.comparison.to other metal formin. techn.ques

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Friction 2024年第10期12卷 2325-2343页

作者： Cristin. GARCÍA-CABEZÓn.Juan.Alfon.o n.RAn.O Celia GARCÍA-HERn.n.EZ Cristin. BERGES Gemma HERRAn. Fern.n.o MARTÍn.PEDROSA Materials En.in.erin. E.I.I.Universidad de ValladolidValladolid 47011Spain In.I-Escuela Técn.ca Superior de In.en.ería In.ustrial(ETSII) Universidad de Castilla La ManchaCastilla-La Mancha 13071Spain

Fused filamen. fabrication.FFF)is on. of the additive man.facturin. processes which has gain.d more in.erest because of its simplicity an. *** techn.logy is similar to the con.en.ion.l metal in.ection.mouldin.(MIM)process,con.istin. of the feedstock preparation.of metal powder an. polymer bin.ers,followed by layer-by-layer 3D prin.in.(FFF)or in.ection.MIM)to create green.parts an.,fin.lly,debin.in. an. ***,both techn.logies provide n.ar-den.e *** work presen.s an.in.depth study of the processin. method’s *** porosity,microstructure,hardn.ss,corrosion.an. tribocorrosion.behaviour are compared for 17-4 PH SS samples processed from powder by additive man.facturin. usin. FFF an. MIM,as well as con.en.ion.l powder metallurgy(PM)*** samples exhibited the highest macro an. microhardn.ss,while corrosion.behaviour was similar for both MIM an. FFF samples,but superior in.comparison.to con.en.ion.l PM ***,the FFF-as fabricated samples displayed a sign.fican. improvemen. in.tribocorrosion.resistan.e that could be explain.d by the higher proportion.of delta ferrite an. retain.d austen.te in.their microstructure.

关键词： 17-4 PH SS fused filamen. fabrication.FFF) metal in.ection.mouldin.(MIM) corrosion.behaviour powder metallurgy(PM) tribocorrosion.behaviour

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Evaluation.of Rhizobium tropici-Derived Extracellular Polymeric Substan.es on.Selected Soil Properties, Seed Germin.tion. an. Growth of Black-Eyed Peas (Vign. un.uiculata)

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Agricultural Scien.es 2024年第5期15卷 548-564页

作者： Jon.than.Alun.e Metuge Ern.ste Havugiman. Jean.Rugan.irababisha Zachary n. Sen.o Marie Chan.al Mutimawurugo Departmen. of n.tural Resources an. En.iron.en.al Scien.es Alabama A & M University Normal AL USA Departmen. of Crop Scien.e College of Agriculture Animal Sciences and Veterinary Medicine University of Rwanda (UR-CAVM) Kigali Rwanda

Rhizobium tropici-derived extracellular polymeric substan.es (EPS) have been.used in.soils to en.an.e soil structures an. mitigate soil erosion.. However, in.ormation.on.their use to improve soil health an. fertility in.icators, an. plan. growth is limited. In.a green.ouse study, we in.estigated their effects on.some soil health, soil fertility in.ices, an. the growth of black-eyed peas (Vign. un.uiculate). Results showed that soils in.ubated with EPS sign.fican.ly in.reased basal soil respiration. soil microbial biomass, perman.an.te oxidizable carbon.(POC), an. poten.ially min.ralizable n.trogen.(PMn.. The EPS shifted microbial population. from bacteria to fun.i an. Gram (−ve) to Gram ( ve) bacteria. However, it had little or n. effects on.soil pH, soil organ.c matter (SOM), an. cation.exchan.e capacity (CEC). The EPS decreased soil moisture loss, in.reased soil aggregate stability, but delayed blacked-eyed peas germin.tion. in.the soils. At 0.1% (w/w) con.en.ration. in.soils, there was in.rease in.plan. root n.dulation. an. vegetative growth. This study was carried out within.40 days of in.ubatin. soils with EPS or growin. the black-eyed peas in.a green.ouse study. The plan. growth parameters were taken.before flowerin. an. fruitin.. Further studies of the effects of in.ubatin. soils with the extracellular polymeric substan.es on.plan. growth. Soil microbial biomass, microbial diversities, an. other soil fertility in.ices are deemed n.cessary.

关键词： Rhizobium tropici Extracellular Polymeric Substan.es Soil Respiration Soil Microbial Biomass Black-Eyed Peas

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