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Assessment of hybrid geoids in Chile and Spain,combining GGM and GNSS/Leveling observations

Geodesy and Geodynamics 2021年第2期12卷 65-92页

作者： Jose Antonio Tarrio Mosquera marcelo Caverlotti Silva Fernando Isla Carlos Prado University of Santiago of Chile(USACH) Faculty of EngineeringGeographical Engineering DepartmentChile Geographic Military Institute Chile

This research presents the results for analyses done to five geopotential global models(GGM),comparing them with ground data from GNSS and leveling in heterogenic zones from the geodetic perspective,in Chile and *** the official and complete implementation of the International Height Reference Frame(IHRF)has not yet been established,the vertical geodetic system of many countries is not calculated on a global scale;instead,it is calculated by the variation of relative heights between one or more local tide gauges,such as in the case of Spain and *** aspect creates regional and specific altimetry data,which disables the use of GGM to directly obtain the orthometric height of the vertical reference system(VRS)from the GNSS *** models currently reach centimetric precision due to their high resolution but are directly incompatible for a local *** solve this,we expose in this article the contrast between geometric geoidal undulation(ellipsoidal heights and orthometric data from the leveling networks in Spain and Chile)with the geoidal undulation in more recent models and higher resolution:Earth Gravitational Model 2008(EGM08),European Improved Gravity model of the Earth by New techniques(EIGEN6 C4),Gravity Observation Combination(GOCO05 C),Experimental Gravity Field Model(XGM2016),and Ultra-High Resolution Global Geopotential Model(SGG-UGM),adjusting the residual between both referential heights by different parametric models and polynomials of determined *** evaluated,their geoidal undulations are combined with GNSS/leveling data from the corresponding VRS to generate a correcting surface,which is also known as a hybrid geoid,resulting in a model of optimal adjustment for the combination of five parameters of the EIGEN-6 C4 with orthometric heights and ellipsoids of both Chile and *** results show 2-3 cm precisions,which were statistically analyzed to determine the suitability for *** final products are three grids of indep

关键词： GNSS levelling Correcting surface IHRS SIRGAS EIGEN-6C4

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Intraguild niche partitioning in granivorous birds from the late past

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Avian Research 2023年第1期14卷 70-77页

作者： Ana B.Navarro Juliano A.Bogoni marcelo Z.Moreira Luís F.Silveira Museu de Zoologia da Universidade de Sāo Paulo Secāo de AvesAvNazaré48104263-000São PauloSPBrazil Universidade de Sāo Paulo Escola Superior de Agricultura"Luiz de Queiroz"Departamento de Ciências FlorestaisLaboratório de EcologiaManejo e Conservacāo de Fauna Silvestre(LEMaC)Av.Pádua Dias 1113418-900PiracicabaSPBrazil Universidade de Sāo Paulo Centro de Energia Nuclear na AgriculturaLaboratório de Ecologia IsotópicaAv.Centenário 30313416-903PiracicabaSPBrazil

Niche partitioning is a widespread ecological strategy within trophic guilds,ensuring the coexistence of sympatric species by reducing interspecific *** isotope analysis of carbon and nitrogen and isotopic niche metrics(width and overlap)are used as a proxy to investigate niche partitioning among species of a *** our study,we investigated if niche partitioning was an ecological mechanism contributing to the coexistence of granivorous birds from the same geographic region along time,employing an isotopic *** sampled and isotopically analyzed(δ^(13)C andδ^(15)N values)wing feathers from 58 specimens of granivorous birds collected between 1900 and 1966 in southeastern *** grouped birds according to the main habitat type used by them(forest:Cyanoloxia brissonii,Leptotila and Leptotila verreauxi;and grassland:Columbina squammata and Sicalis flaveola).We used the Isotopic Richness(IRic)metric to measure the isotopic niche width and the Isotopic Similarity(ISim)and Isotopic Nestedness(INes)metrics to measure the niche overlap between groups and *** results of low isotopic niche overlap suggest that common granivorous birds had a clear niche partitioning in southeastern Brazil in the late past,especially through foraging in distinct habitat types(forest and grassland;ISim=0.1,INes=0.2).Niche overlaps in almost all species-by-species comparisons were low(ISim≤0.3,INes≤0.4),except between *** and ***(ISim=0.6,INes=1.0).These results suggest that these birds,belonging to the same trophic guild,coexisted through niche and resource *** being considered a plastic trophic guild,the isotopic niche partitioning among granivorous birds indicates that each of these species uses a set of specific resources and *** raises an ecological concern about the homogenization of landscapes across the Neotropics,oversimplifying food resources and habitats to granivorous birds.

关键词： Atlantic forest Avian ecology Cerrado Community ecology Diet Foraging ecology Habitat use Trophic relations

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Oxidative stress in Microcystis aeruginosa as a consequence of global climate change

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BIOCELL 2016年第1期40卷 23-25页

作者： marcelo HERNANDO CHRISTIAN HOUGHTON LEDA GIANNUZZI BERND KROCK DARIO ANDRINOLO GABRIELA MALANGA Departamento de Radiobiología Comisión Nacional de Energía AtómicaBuenos AiresArgentina Area de Toxicología Dpto.de Cs BiológicasFacultad de Ciencias Exactas.UNLP Alfred Wegener Institute BremerhavenGermany Instituto de Bioquímica y Medicina Molecular(IBIMOL)-Universidad de Buenos Aires(UBA) CONICETFisicoquímicaFacultad de Farmacia y BioquímicaJunín 956(C1113AAD)Buenos Aires.Argentina

Cyanobacteria are phototrophic organisms with great ecological and economical *** of the genus Microcystis are known for their potential ability to synthesize toxins,notably *** is a growing interest in the evaluation of oxidative stress in relation to the impact of global climate change on natural ecosystems in different trophic *** studies have focused on the analysis of organismal responses to mitigate the damage by controlling the generation of reactive oxygen *** in environ-mental factors caused by climate change generate a situation of oxidative damage in Microcystis aeruginosa as a direct or indirect *** this study we evaluate the effects of ultraviolet radiation and temperature on physiological and biochemical responses of a native ***(strain CAAT 2005-3).The results from the exposure to ultraviolet radiation doses and temperature changes suggest a high ability of *** to detect a potential stress situation as a consequence of reactive species production and to rapidly initiate antioxidant *** catalase activity is an antioxidant protection mechanism in *** for short and long term exposure to different changes in environmental ***,we found a ultraviolet-B radiation threshold dose above which oxidative stress exceeds the antioxidant protection and damage *** addition our results are in agreement with recent findings suggesting that microcystins may act as protein-modulating metabolites and protection against reactive oxygen *** is concluded that cyanobacteria have adaptative mechanisms that could lead to the replacement of species highly susceptible to oxidative stress by others with a higher system of antioxidant protection.

关键词： oxidative stress Cyanobacteria UVR temperature

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In vivo solid phase microextraction for therapeutic monitoring and pharmacometabolomic fingerprinting of lung during in vivo lung perfusion of FOLFOX

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Journal of Pharmaceutical Analysis 2023年第10期13卷 1195-1204页

作者： Nikita Looby Anna Roszkowska Miao Yu German Rios-Gomez Mauricio Pipkin Barbara Bojko marcelo Cypel Janusz Pawliszyn Department of Chemistry University of Waterloo200 University Avenue WestWaterlooONN2L 3G1Canada Department of Pharmaceutical Chemistry Medical University of Gdansk80-416GdanskPoland Division of Thoracic Surgery University Health NetworkTGH200 Elizabeth StTorontoONM5G 2C4Canada Department of Pharmacodynamics and Molecular Pharmacology Collegium Medicum in BydgoszczNicolaus Copernicus University in Torun85-089BydgoszczPoland

In vivo lung perfusion(IVLP)is a novel isolated lung technique developed to enable the local,in situ administration of high-dose chemotherapy to treat metastatic lung *** therapy using folinic acid(FOL),5-fluorouracil(F),and oxaliplatin(OX)(FOLFOX)is routinely employed to treat several types of solid tumours in various ***,F is characterized by large interpatient variability with respect to plasma concentration,which necessitates close monitoring during treatments using of this *** plasma drug concentrations often do not reflect tissue drug concentrations,it is essential to utilize sample-preparation methods specifically suited to monitoring drug levels in target *** this work,in vivo solid-phase microextraction(in vivo SPME)is proposed as an effective tool for quantitative therapeutic drug monitoring of FOLFOX in porcine lungs during pre-clinical IVLP and intravenous(IV)*** concomitant extraction of other endogenous and exogenous small molecules from the lung and their detection via liquid chromatography coupled to high resolution mass spectrometry(LC-HRMS)enabled an assessment of FOLFOX's impact on the metabolomic profile of the lung and revealed the metabolic pathways associated with the route of administration(IVLP ***)and the therapy *** study also shows that the immediate instrumental analysis of metabolomic samples is ideal,as long-term storage at80℃ results in changes in the metabolite content in the sample extracts.

关键词： In vivo lung perfusion Solid-phase microextraction Chemotherapy Metabolomics Therapeutic drug monitoring

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Totally intracorporeal robot-assisted urinary diversion for bladder cancer(Part 1).Review and detailed characterization of ileal conduit and modified Indiana pouch

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Asian Journal of Urology 2021年第1期8卷 50-62页

作者： Hugo Otaola-Arca Rafael Coelho Vipul R.Patel marcelo Orvieto Department of Urology Clı´nica AlemanaSantiagoChile School of Medicine Clı´nica Alemana-Universidad del DesarrolloSantiagoChile Universidade de Sa˜o Paulo Instituto do Caˆncer do Estado de Sa˜o Paulo Brazil Department of Urology AdventHealth Global Robotics InstituteCelebrationFLUnited States

Objective:To review the most used robot-assisted cutaneous urinary diversion(CUD)after radical cystectomy for bladder cancer and create a unified compendium of the different alternatives,including new consistent images Methods:A non-systematic review of the literature with the keywords“bladder cancer”,“cutaneous urinary diversion”,and“radical cystectomy”was ***:Twenty-four studies of intracorporeal ileal conduit(ICIC)and two of intracorporeal Indiana pouch(ICIP)were included in the *** ICIC,the patients’age ranged from 60 to 76 *** operative time to perform a urinary diversion ranged from 60 to 133 *** total estimated blood loss ranged from 200 to 1117 *** rate of positive surgical margins ranged from 0%to 14.3%.Early minor and major complication rates ranged from 0%to 71.4%and from 0%to 53.4%,*** minor and major complication rates ranged from 0%to 66%and from 0%to 32%,*** ICIP data are limited to one case report and one clinical ***:The most frequent type of CUD is *** studies comparing the performance of the different types of CUD,the performance in an intra-or extracorporeal manner,or the performance of a CUD versus orthotopic ileal neobladder are lacking in the *** this day,there are not enough quality data to determine the supremacy of one *** manuscript represents a compendium of the most used CUD with detailed descriptions of the technical aspects,operative and perioperative outcomes,and new consistent images for each technique.

关键词： Bladder cancer Ileal conduit Indiana pouch Intracorporeal urinary diversion Robot-assisted radical cystectomy Surgical technique

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