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Biochar 2020年第3期2卷 319-328页

作者： Fermín Delgado Victoria S.Gutierrez mariana Dennehy mariana alvarez INQUISUR Departamento de QuímicaUniversidad Nacional del SurAv.Alem 12538000 Bahía BlancaArgentina Planta Piloto de Ingeniería Química PLAPIQUI(CONICET-UNS)Camino La Carrindanga Km 78000 Bahía BlancaArgentina

This study focuses on the synthesis of metal-based biochar catalysts and their catalytic activation of peroxymonosulfate(PMS,HSO5−)for the degradation of three different wastewater model pollutants employing advanced oxidation processes(AOP).Iron,copper,and two different cobalt-based catalysts were prepared and *** catalysts were supported on a biochar obtained from the pyrolysis of woody pruning *** were characterized by C,H,and N elemental analysis,X-Ray diffraction(XRD),Fourier-transform infrared spectroscopy(FTIR),and scanning electron microscope(SEM).The metal content in each catalyst was determined by means of atomic absorption spectroscopy(AAS).The degradation reac-tions of benzoic acid(BA),catechol(C),and cinnamic acid(CA)were carried out in a lab scale batch glass reactor and were followed by UV-Visible spectroscopy(UV-Vis).A colorimetric technique was employed to verify the presence of oxidant during the reaction *** catalyst/oxidant optimal ratio was determined for the cobalt *** mineralization degree of the pollutants after the degradations was verified by means of total organic carbon(TOC)content in the residual *** 4 h of reaction,the maximum mineralization was reached when C was treated with a cobalt-based catalyst(>80%),and its stability was evaluated through successive cycles of use.

关键词： Biochar Organic pollutants Advanced oxidation processes Sulfate radicals Cobalt catalysts

Metabolic Syndrome and Pregnancy, Its Prevalence, Obstetrical and Newborns Complications

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Open Journal of Obstetrics and Gynecology 2015年第11期5卷 618-625页

作者： Hamilton dos Prazeres Tavares mariana alvarez Arantes Suelma Beatriz Marques Prata Tavares Joelcio Francisco Abbade D. C. D. Meirelles dosDébora Cristina Damasceno Meirelles dos Santos Iracema de Mattos Paranhos Calderon Marilza Vieira Cunha Rudge PhD Student in Gynecology Obstetrics and Mastology at the Botucatu Medical School Unesp Paulista State University Botucatu SP Brazil Medical Specialist in Gynaecology and Obstetrics and Boss of Department of Gynecology and Obstetrics of the Municipal Hospital of Huambo Huambo Angola Assistant Professor of Obstetrics Botucatu Medical School Unesp Paulista State University Botucatu SP Brazil PhD Department of Gynecology and Obstetrics Laboratory of Experimental Research on Gynecology and Obstetrics Botucatu Medical School Unesp Paulista State University Botucatu SP Brazil Full Professor of Obstetrics in Botucatu Medical School Unesp Paulista State University Botucatu SP Brazil

Background: The metabolic syndrome affects more and more global people. Although it shows increasing prevalence in general population, the syndrome affects more women than men, what makes its risk of being developed during pregnancy period. Also, possible perinatal adverse effects are always lurking. Objective: the objective was demonstrated what’s new in literature on metabolic syndrome and pregnancy. Methods: A literature review was performed to extract the articles published on metabolic syndrome and pregnancy, its prevalence, obstetrical complications and its perinatal adverse effects. This review was conducted by online researching in PubMed, Lilacs, Medline, Embase, Scopus, Medscape, Libertas Academica and CINAHL database, Science database and also by researches in books. 27 selected articles on metabolic syndrome after this research were all published between 1988 and 2015. Results: Among those 27 articles and two books studied, SM rate in obstetric population ranged from 3% to 42% depending on the previously manifested components of the syndrome, age and region. Women with previously manifested components showed more adverse perinatal effects. Conclusion: Women with pregestational DM or SM and SM develop more during pregnancy, obstetric complications and adverse perinatal outcomes.

关键词： Metabolic Syndrome Pregnancy Adverse Perinatal Outcomes

Efficient Gaussian process regression for prediction of molecular crystals harmonic free energies

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npj Computational Materials 2021年第1期7卷 1552-1561页

作者： Marcin Krynski mariana Rossi Fritz Haber Institute of the Max Planck Society Faradayweg 4-614195 BerlinGermany Faculty of Physics Warsaw University of TechnologyKoszykowa 7500-662 WarsawPoland MPI for the Structure and Dynamics of Matter Luruper Chaussee 14922765 HamburgGermany

We present a method to accurately predict the Helmholtz harmonic free energies of molecular crystals in high-throughput *** is achieved by devising a computationally efficient framework that employs a Gaussian Process Regression model based on local atomic *** cost to train the model with ab initio potentials is reduced by starting the optimization of the framework parameters,as well as the training and validation sets,with an empirical *** is then transferred to train the model based on density-functional theory potentials,including *** benchmarked our framework on a set of 444 hydrocarbon crystal structures,comprising 38 polymorphs and 406 crystal structures either measured in different conditions or derived from these *** performance and high prediction accuracy,with mean absolute deviation below 0.04 kJ mol^(−1) per atom at 300 K is achieved by training on as little as 60 crystal ***,we demonstrate the predictive efficiency and accuracy of the developed framework by successfully calculating the thermal lattice expansion of aromatic hydrocarbon crystals within the quasi-harmonic approximation,and predict how lattice expansion affects the polymorph stability ranking.

关键词： harmonic crystal Gaussian

Response of bioaerosol cells to photocatalytic inactivation with ZnO and TiO_(2)impregnated onto Perlite and Poraver carriers

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Frontiers of Environmental Science & Engineering 2021年第3期15卷 137-149页

作者： mariana Valdez-Castillo Sonia Arriaga Environmental Science Department Institute for Scientific and Technological Research of San Luis PotosiIPICYT.Camino Presa San Jose 2055Lomas 4a SeccionCP 78216San Luis PotosiMexico

Bioaerosols are airborne microorganisms that cause infectious sickness,respiratory and chronic health *** have become a latent threat,particularly in indoor *** is a promising process to inactivate completely bioaerosols from ***,in systems treating a continuous air flow,catalysts can be partially lost in the gaseous *** avoid such phenomenon,supporting materials can be used to fix *** the present work,four photocatalytic systems using Perlite or Poraver glass beads impregnated with ZnO or TiO_(2)were *** inactivation mechanism of bioaerosols and the cytotoxic effect of the catalysts to^bioaeros^ls were *** plug flow photocatalytic reactor treated a bioaerosol flow of 460×10^(6)cells/m^(3)_(air)with a residence time of 5.7 *** Cytometry(FC)was used to quantify and characterize bioaerosols in terms of dead,injured and live *** most efficient system was ZnO/Perlite with 72%inactivation of bioaerosols,maintaining such inactivation during 7.5 h due to the higher water retention capacity of Perlite(2.8 mL/gpcriite)in comparison with Poraver(1.5 mL/gperiite).However,a global balance showed that Ti0_(2)/Poraver system triggered the highest level of cytotoxicity to bioaerosols retained on the support after 96 h with 95%of dead *** and FC analyses showed that the mechanism of inactivation with ZnO was based on membrane damage,morphological cell changes and cell lysis;whereas only membrane damage and cell lysis were involved with Ti0_(2).Overall,results highlighted that photocatalytic technologies can completely inactivate bioaerosols in indoor environments.

关键词： Immobilized catalysts Continuous flow Photocatalysis Bioaerosols Cytotoxicity Inactivation mechanism

The role of mitochondria in inflammatory syndromes

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BIOCELL 2016年第1期40卷 47-50页

作者： VIRGINIA VANASCO TIMOTEO MARCHINI NATALIA MAGNANI TAMARA VICO mariana GARCES LOURDES CACERES ALEJANDRO GUAGLIANONE PABLO EVELSON SILVIA alvarez Institute of Biochemistry and Molecular Medicine(IBIMOL UBA-CONICET)School of Pharmacy and BiochemistryUniversity of Buenos AiresJunín 956C1113AAD Buenos AiresArgentina.

Several authors have addressed the importance of mitochondrial function in inflammatory syn-dromes,as it may play a role in the genesis of tissue *** and exposition to environmental particles are examples of inflammatory *** occurs with an exacerbated inflammatory response that damages tissue mitochondria and impairs bioenergetic *** of the current hypotheses for the molecular mech-anisms underlying the complex condition of sepsis is that enhanced NO production and oxidative stress lead to mitochondrial dysfunction,bioenergetic derangement and organ *** mechanism of particulate mat-terhealth effects are believed to involve inflammation and oxidative *** in particles that elicit inflammation have been poorly investigated,although recent research points out to the contribution of composi-tional elements and particle *** metabolism and mitochondrial function appear to be important areas of study in inflammatory conditions for clarifying molecular mechanisms involved.

关键词： mitochondrial function bioenergetics heart endotoxemia ambient air particles

How behavioral plasticity enables foraging under changing environmental conditions in the social wasp Vespula germanica (Hymenoptera: Vespidae)

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Insect Science 2021年第1期28卷 231-237页

作者： Sabrina Moreyra mariana Lozada Laboratorio Ecotono.Instituto de Investigaciones en Biodiversidad y Medio Ambiente(INIBIOMA)—CONICET—Universidad Nacional del Comahue QuintralBarilocheArgentina

The foraging strategy at abundant resources of the social wasp Vespula germanica includes scanning in the direction of the nest while memorizing resource-specific landmarks and contextual *** the present study,we sought to explore wasps'behavioral plasticity on foraging trips to resources whose location and composition changed after a single *** evaluated how contextual modifications of food displacement and replacements 60 cm apart from the original site,affect re-orientation for re-finding previously memorized food *** results showed that wasps detected and collected the resource faster when more changes were introduced on the following *** returning foragers discovered several modifications on both the location and the kind of resource,they collected food more rapidly from the displaced dish,than if only a single parameter in the environment had been *** findings illustrate the grade of behavioral plasticity in *** while foraging on abundant resources,which may contribute to the understanding of the prodigious invasive success of this species in anthropized environments.

关键词： behavioral plasticity environmental conditions foraging invasive insects learning social wasps

LEFT-RIGHT BROWDER LINEAR RELATIONS AND RIESZ PERTURBATIONS

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Acta Mathematica Scientia 2017年第5期37卷 1437-1452页

作者： Teresa alvarez Department of Mathematics University of Oviedo33007OviedoAsturiasSpain

A closed linear relation T in a Banach space X is called left(resp. right) Fredholm if it is upper(resp. lower) semi Fredholm and its range(resp. null space) is topologically complemented in X. We say that T is left(resp. right) Browder if it is left(resp. right)Fredholm and has a finite ascent(resp. descent). In this paper, we analyze the stability of the left(resp. right) Fredholm and the left(resp. right) Browder linear relations under commuting Riesz operator perturbations. Recent results of Zivkovic et al. to the case of bounded operators are covered.

关键词： left and right Fredholm linear relations left and right Browder linear relations Riesz perturbations

On Rigid 2-Step Nilpotent Lie Algebras

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Algebra Colloquium 2018年第2期25卷 349-360页

作者： Maria Alejandra alvarez Departamento de Matematicas Facultad de Ciencias Basicas Universidad de Antofagasta Casilla 170 Antofagasta Chile

In this note we consider 2-step nilpotent Lie algebras and give a criterion for the rigidity of this class in the variety N2n of 2-step nilpotent Lie algebras of dimension n. We apply this criterion to prove that ever... 详细信息

关键词： nilpotent Lie algebras variety of Lie algebras deformations cohomology,nilradicals

Foraging behavior related to habitat characteristics in the invasive wasp Vespula germanica

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Insect Science 2007年第5期14卷 383-388页

作者： PAOLA D'ADAMO mariana LOZADA Laboratorio Ecotono Universidad Nacional del Comahue Bariloche Argentina

When foraging on carrion resources, the wasp Vespula germanica usually makes repeated visits to the feeding site until depleting the resource. In the present study we analyzed how environmental cues affect wasps＇ behavior when re-locating a protein food source. We studied this behavior in two different natural habitats： closed and open habitats. As closed habitats have more references to orient wasps to the feeding site than open habitats, we hypothesized that they would return to the foraging site more frequently in closed habitats than in open ones. We tested this hypothesis by studying wasp behavior in three different natural habitat conditions：（i） closed habitats, （ii） open habitats, and （iii） open habitats artificially modified by adding five sticks with flagging. Experiments consisted of training individual wasps to feed from a certain array, and at the testing phase we removed food and displaced the array by 60 cm. Therefore, we recorded wasps＇ choices when returning to the training area, by counting both the wasps＇ first approaches and the number of visits to the original feeding site and the displaced array. Wasps＇ behavior while re-locating a protein food source was different if foraging at open or closed habitats. Wasps more frequently re- visited a previous feeding location when foraging in closed habitats than when foraging in open ones. Furthermore, wasps more frequently visited the displaced array than the original feeding site in all three treatments. Nevertheless, when wasps were trained in closed habitats, they returned to the original feeding site more frequently than if trained in open ones. Interestingly, when five sticks with flagging were added in open habitats, wasps responded similarly as in closed habitats without these references. The results show that foraging behavior in V. germanica seems to be different in closed and open habitats, probably associated with the existence of references that guide foragers when re-locating undepleted res

关键词： environmental cues food exploitation invasive species re-localization socialwasps Vespidae

Choosing among correlative, mechanistic, and hybrid models of species’ niche and distribution

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Integrative Zoology 2023年第1期18卷 93-109页

作者： Luara TOURINHO mariana M.VALE Graduate Program in Ecology Universidade Federal do Rio de JaneiroIlha do FundãoRio de JaneiroBrazil Ecology Department Universidade Federal do Rio de JaneiroIlha do FundãoRio de JaneiroBrazil

Different models are available to estimate species’niche and *** and correlative models have different underlying conceptual bases,thus generating different estimates of a species’niche and geographic *** models,which combining correlative and mechanistic approaches,are considered a promising strategy;however,no synthesis in the literature assessed their applicability for terrestrial vertebrates to allow best-choice model considering their strengths and ***,we provide a systematic review of studies that compared or integrated correlative and mechanistic models to estimate species’niche for terrestrial vertebrates under climate *** goal was to understand their conceptual,methodological,and performance differences,and the appli-cability of each *** studies we reviewed directly compared mechanistic and correlative predictions in terms of accuracy or estimated suitable area,however,without any quantitative analysis to support ***,many studies suggest that instead of comparing approaches,mechanistic and correlative methods should be integrated(hybrid models).However,we stress that the best approach is highly ***-deed,the quality and effectiveness of the prediction depends on the study’s objective,methodological design,and which type of species’niche and geographic distribution estimated are more appropriate to answer the study’s issue.

关键词： climate change ecological niche model integrative model species distribution model vertebrates