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Chemometric Analysis of an Sanitary Landfill Leachate

Journal of Water Resource and Protection 2012年第1期4卷 16-24页

作者： Ana m.C. Grisa Cíntia Paese Oclide José Dotto ronaldo nicola.m.ra zeni 不详

This paper presents a study on the biotic/abiotic conditions of the S?o Giácomo sanitary landfill, located near the city of Caxias do Sul, Brazil, through statistical analysis of fourteen physic-chemical data sets for the leachate, produced in the garbage dump site over a long period of years. Different chemometric methods are used in the statistical analysis. For example, the correlations between the variables, related to the degraded organic matter and biological activity, are determined by means of multivariate methods. The results highlight that BOD, COD, VTS, FTS and TS give information on the anaerobic degradation of the organic matter contained in the cells, and suggest that the greater the contribution of the variables with positive weights in PC1 the greater the level of organic matter degradation. The variables TN, Amon Nit. and alkalinity are related to the biological activity and determine the potency of the variables in relation to time. The greater the contribution of the variables related to organic degradation the greater the values in PC2 and the lesser the potency of these variables, whose influence is greater in the second stage of anaerobic degradation. The variables of PC2 is important plans of the contamination of the leached in the bodies hídrics.

关键词： Landfill Leachate Physico-Chemical Variables Chemometric method Principal Components Analysis

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SARS-CoV-2 productively infects primary human immune system cells in vitro and in CoviD-19 patients

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Journal of molecular Cell Biology 2022年第4期14卷 51-64页

作者： marjorie C.Pontelli italo A.Castro ronaldo B.martins Leonardo La Serra Flavio P.Veras Daniele C.Nascimento Camila m.Silva Ricardo S.Cardoso Roberta Rosales Rogério Gomes Thais m.Lima Juliano P.Souza Brenda C.Vitti Diego B.Caetite mikhael H.F.de Lima Spencer D.Stumpf Cassandra E.Thompson Louis-marie Bloyet Juliana E Toller-Kawahisa marcela C.Giannini Leticia P.Bonjorno marial.F.Lopes Sabrina S.Batah Li Siyuan Rodrigo Luppino-Assad Sergio C.L.Almeida Fabiola R.Oliveira maira N.Benatti Lorena L.F.Pontes Rodrigo C.Santana Fernando C.Vilar maria Auxiliadora-martins Pei-Yong Shi Thiago m.Cunha Rodrigo T.Calado JoséC.Alves-Filho Dario S.Zamboni Alexandre T.Fabro Paulo Louzada-Junior Rene D.R.Oliveira Sean P.J.Whelan Fernando Q.Cunha Eurico Arruda Virology Research Center Ribeirao Preto Medical SchoolUniversity of Sao Pauloibeirao PretoSao Paulo 14049-900.Brazil Center of Research in Inflammatory Diseases Ribeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao Paulo 14049-900Brazil Department of Celland molecular Biology Ribeirao Preto Medical SchoolUniversityof Sao PauloRibeirao PretoSao Paulo 14049-900 Brazil Regional Blood Centerof Ribeirao Preto Ribeirao Preto Medical ScholUniversity of Sao PauloRibeirao PretoSao Paulo 14049-900Brazil Department of Biochemistry&molecular Biology the University of Texas Medical BranchGalvestonTX7755USA Divisions of Clinical lmmunology Infectious Diseases and Intensive Care UnitRibeirao Preto Medical Schooniversity of Sao PauloRibeirao PretoSao Paulo 14049-900Brazil Department of Pathology Ribeirao Preto Medical Scholniversity of Sao PauloRibeirao PretoSao Paulo 14049-900Brazil Department of molecular microbiology.Washington University in St.Louis Saint LouisMO 63110USA

The severe acute respiratory syndrome coronavirus 2(SARS-CovV-2)infection is associated with a hyperinflammatory state and lymphocytopenia,a hallmark that appears as both signature and prognosis of disease severity *** cytokine storm and a sustained inflammatory state are commonly associated with immune cell depletion,it is still unclear whether direct SARS-Cov-2 infection of immune cells could also play a role in this scenario by harboring viral *** found that monocytes,as well as both B and T lymphocytes,were susceptible to SARS-Cov-2 infection in vitro,accumulating double-stranded RNA consistent with viral RNA replication and ultimately leading to expressive T cell *** addition,flow cytometry and immunofluorescence analysis revealed that SARS-Cov-2 was frequently detected in monocytes and B lymphocytes from coronavirus disease 2019(CoVID-19)*** rates of SARS-Cov-2-infected monocytes in peripheral blood mononuclear cells from CoVID-19 patients increased over time from symptom onset,with SARS-CoV-2-positive monocytes,B cells,and CD4+T lymphocytes also detected in postmortem lung *** results indicated that SARS-CoV-2 infection of blood-circulating leukocytes in covID-19 patients might have important implications for disease pathogenesis and progression,immune dysfunction,and virus spread within the host.

关键词： SARS-CoV-2 CoVID-19 lymphocytopenia peripheral blood mononuclear cell(PBmC) lymphocytes monocytes apoptosis

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