Search results for "component"

showing 10 items of 1682 documents

A TWO-COMPONENT MANTLE EXTENDING FROM MT. ETNA TO HYBLEAN PLATEAU (EASTERN SICILY) AS INFERRED BY AN INTEGRATED APPROACH WITH NOBLE GASES, TRACE ELEM…

2012

A TWO-COMPONENT MANTLE EXTENDING FROM MT. ETNA TO HYBLEAN PLATEAUSettore GEO/07 - Petrologia E PetrografiaINTEGRATED APPROACH WITH NOBLE GASES TRACE ELEMENTS AND ISOTOPIC GEOCHEMISTRY.
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Genesi geometrica delle volte centriche

1996

Un'analisi completa degli organismi voltati comporta lo studio delle molteplici componenti necessarie alla loro definizione: configurazione geometrica, sistema costruttivo, area storico-geografica di appartenenza, interpretazioni Stilistiche. L’obiettivo di questo studio è indirizzato all' analisi delle volte continue su pianta centrica definibili attraverso le leggi della geometria euclidea. L’indagine si pone all'interno dei confini relativi alla loro configurazione geometrica e il criterio adottato, svincolato da classificazioni di carattere tipologico o stilistico, propone l'identificazione di famiglie geometriche in base alla figura del poligono di base dell'impianto. Si può identifica…

A comprehensive analysis of vaulted bodies involves the study of the multiple components necessary for their definition: geometric configuration construction system historical-geographical area of belonging interpretations Stylistic. The objective of this study is directed to the 'analysis of continuous vaults on a centric plan definable through the laws of Euclidean geometry. The investigation arises within the boundaries related to their geometric configuration and the criterion adopted freed from typological or stylistic classifications proposes the identification of geometric families based on the figure of the basic polygon of the plant. An ordering process can be identified to explain the compositional process of curved-roofed central plants: that is the elaboration of a series of theoretical models developed according to an abacus referring to the basic geometries of the triangle square and pentagon is possible. It is not intended to impose a classification but to propose a study tool that thanks to a few simple compositional rules develops a very large number of configurationthe question remains as to why only a part has been used for the realization of vaulted covered centric buildings but this presumes considerations of a historical formal and constructive nature extraneous to this discussion.Settore ICAR/17 - Disegno
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Ortodontiskās ārstēšanas nepieciešamības indeksa (IONT) izmantošana minētajiem Latvijas iedzīvotājiem

2020

Priekšvēsture: Ortodontiskos indeksus visā pasaulē izmanto, lai noteiktu pacientu ortodontisko stāvokli. Visā pasaulē netiek izmantots vienots standarts. Viens no populārākajiem ortodontiskajiem indeksiem ir ortodontiskās ārstēšanas nepieciešamības indekss (IOTN) un Engla klasifikācija (Han & Davidson, 2001).Ortodontiskie indeksi palīdz noteikt nepareizu sakodienu un nosaka pacienta ortodontisko stāvokli. Tas nozīmē, ka ārstēšanā prioritāte tiek piešķirta tiem, kam tā vispirms nepieciešama, un tas palīdz pamatoti un taisnīgi sadalīt resursus (Tang, 1993).Papildus šiem aspektiem, kas saistīti ar cilvēku nepareiza sakodiena izvērtējumu, tie palīdz arī iz…

AC Aesthetic ComponentDental castsIONT Index of Orthodontic Treatment NeedDHC Dental Health ComponentMedicīna
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Metabolic signatures across the full spectrum of non-alcoholic fatty liver disease.

2022

Funder: European Commission

ALTtype 2 diabetes mellitusROC receiving operator characteristicaspartate aminotransferaseHSDLDL low-density lipoproteinUHPLC ultrahigh-performance liquid chromatographyROCHCCNon-alcoholic steatohepatitisGCPCANASHGastroenterology2-HB 2-hydroxybutanoic acid; 3-HB 3-hydroxybutanoic acid; ALT alanine aminotransferase; AST aspartate aminotransferase; CE cholesterol ester; Cer ceramide; FFA free fatty acid; FLIP Fatty Liver Inhibition of Progression; Fibrosis; GC gas chromatography; HCC hepatocellular carcinoma; HSD honest significant difference; LC lipid cluster; LDL low-density lipoprotein; LM lipid and metabolite; LMC lipid metabolite and clinical variable; LPC lysophosphatidylcholine; Lipidomics; Mass spectrometry; Metabolomics; NAFL non-alcoholic fatty liver; NAFLD non-alcoholic fatty liver disease; NAS NASH activity score; NASH non-alcoholic steatohepatitis; NIDDK NASH-CRN National Institute of Digestive Diseases and Kidney NASH Clinical Research Network; NRR non-rejection rate; Non-alcoholic steatohepatitis; PC(O) ether PC; PC phosphatidylcholine; PCA principal component analysis; PE phosphatidylethanolamine; QTOFMS quadrupole-time-of-flight mass spectrometry; ROC receiving operator characteristic; SAF steatosis activity and fibrosis; SM sphingomyelin; T2DM type 2 diabetes mellitus; TG triacylglycerol; UHPLC ultrahigh-performance liquid chromatographySAFSAF steatosis activity and fibrosisLM lipid and metabolitehonest significant differenceHSD honest significant differenceTG triacylglycerolnon-rejection ratecholesterol esterPCPEGC gas chromatographyfree fatty acidFLIPNASH non-alcoholic steatohepatitisNIDDK NASH-CRN National Institute of Digestive Diseases and Kidney NASH Clinical Research NetworkBIOMARKERST2DMPE phosphatidylethanolamineLDLlipidNAFLDFFA free fatty acid2-HBMetabolomicsNAFL non-alcoholic fatty liverLMCphosphatidylcholineScience & TechnologySM sphingomyelinGastroenterology & HepatologyMass spectrometryactivitynutritional and metabolic diseasesT2DM type 2 diabetes mellitusACIDSreceiving operator characteristicdigestive system diseasesquadrupole-time-of-flight mass spectrometryLC lipid clusterlow-density lipoproteinNAS2-HB 2-hydroxybutanoic acidNAS NASH activity scoreQTOFMSether PCNRRSCORING SYSTEMprincipal component analysisgas chromatographyLC2-hydroxybutanoic acidPROGRESSIONAST aspartate aminotransferaseLMPC phosphatidylcholinePC(O)MARKERSUHPLCsteatosisTOOLImmunology and AllergyINSULIN-RESISTANCECerSMFatty Liver Inhibition of Progressionhepatocellular carcinoma2-HB 2-hydroxybutanoic acid NIDDK NASH-CRN National Institute of Digestive Diseases and Kidney NASH Clinical Research Network NRR non-rejection rate Non-alcoholic steatohepatitis PC(O) ether PC PC phosphatidylcholine PCA principal component analysis PE phosphatidylethanolamine QTOFMS quadrupole-time-of-flight mass spectrometry ROC receiving operator characteristic SAF steatosis activity and fibrosis SM T2DM type 2 diabetes mellitus TG triacylglycerol UHPLC ultrahigh-performance liquid chromatographyultrahigh-performance liquid chromatographyCELPC3-HBNAFLnon-alcoholic fatty liverTGtriacylglycerolNRR non-rejection rateLife Sciences & BiomedicineNAFLD non-alcoholic fatty liver diseaseFLIP Fatty Liver Inhibition of Progressionalanine aminotransferasemetaboliteCer ceramideCE cholesterol estersphingomyelinlysophosphatidylcholineand fibrosisALT alanine aminotransferaseInternal MedicineceramideNational Institute of Digestive Diseases and Kidney NASH Clinical Research NetworkAST3-HB 3-hydroxybutanoic acidQTOFMS quadrupole-time-of-flight mass spectrometryPCA principal component analysisLPC lysophosphatidylcholineHepatologynon-alcoholic fatty liver diseaseand clinical variablePC(O) ether PC3-hydroxybutanoic acidFibrosisNASH activity scoreNIDDK NASH-CRNlipid clusterlipid and metabolitephosphatidylethanolamineLipidomicsLMC lipid metabolite and clinical variableFFAHCC hepatocellular carcinomaJHEP reports : innovation in hepatology
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CitA/CitB Two-Component System Regulating Citrate Fermentation in Escherichia coli and Its Relation to the DcuS/DcuR System In Vivo

2011

ABSTRACT Citrate fermentation by Escherichia coli requires the function of the citrate/succinate antiporter CitT ( citT gene) and of citrate lyase ( citCDEFXG genes). Earlier experiments suggested that the two-component system CitA/CitB, consisting of the membrane-bound sensor kinase CitA and the response regulator CitB, stimulates the expression of the genes in the presence of citrate, similarly to CitA/CitB of Klebsiella pneumoniae . In this study, the expression of a chromosomal citC-lacZ gene fusion was shown to depend on CitA/CitB and citrate. CitA/CitB is related to the DcuS/DcuR two-component system which induces the expression of genes for fumarate respiration in response to C 4 -di…

ATP citrate lyaseOperonBiologymedicine.disease_causeMicrobiologyCitric AcidFusion geneGene clusterEscherichia colimedicinePromoter Regions GeneticMolecular BiologyEscherichia coliEscherichia coli ProteinsPromoterGene Expression Regulation BacterialArticlesMolecular biologyTwo-component regulatory systemDNA-Binding ProteinsResponse regulatorBiochemistryFermentationProtein KinasesProtein BindingTranscription FactorsJournal of Bacteriology
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Elucidation of the biosynthesis and degradation of allantofuranone by isotopic labelling and fermentation of modified precursors.

2010

Feeding experiments with the ascomycete Allantophomopsis lycopodina indicated that the potent fungistatic allantofuranone is biosynthesized from phenylalanine. Further experiments with synthetic precursors gave evidence that the naturally occurring polyporic acid serves as a key intermediate in the biosynthesis. In addition to the formation of allantofuranone, its abiotic and metabolic degradation were investigated.

Abiotic componentAntifungal AgentsOrganic ChemistryFungiPolyporic acidPhenylalanineBiologyBiochemistryIsotopic labelingchemistry.chemical_compoundBiosynthesischemistryBiochemistry4-ButyrolactoneLabellingIsotope LabelingFermentationMolecular MedicineDegradation (geology)FermentationMolecular BiologyChembiochem : a European journal of chemical biology
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Carbon and nitrogen stable isotope ratios of soils and grasses as indicators of soil characteristics and biological taxa

2019

Abstract The use of stable isotope techniques can assist in understanding interactions of plants with various abiotic and biotic processes. In the research, we focused on carbon (C) and nitrogen (N) isotopes because they are the most important resources influencing plant function and the biogeochemical cycles. The 13C/12C and 15N/14N ratios in plants and in soils and the relationships between these ratios and biological and environmental factors of widely distributed native C3 plants (couch grass, plantain and yarrow) collected from two sites in St. Petersburg, Russia were studied. The soil characteristics of the sites were rather different. This had a significant effect on the isotope rati…

Abiotic componentBiogeochemical cycleIsotopeSoil textureStable isotope ratiochemistry.chemical_element010501 environmental sciences010502 geochemistry & geophysics01 natural sciencesPollutionNitrogenAgronomychemistryGeochemistry and PetrologySoil waterEnvironmental ChemistryEnvironmental scienceCarbon0105 earth and related environmental sciencesApplied Geochemistry
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Re-establishment of zooplankton communities in temporary ponds after autumn flooding: Does restoration age matter?

2012

Abstract In temporary ponds, reestablishment of zooplankton communities depends on recruitment from the egg bank, the arrival of dispersers from within the region, and on successful establishment of newly arrived species following interaction with local abiotic and biotic factors. When the ponds dry up, zooplankton species may survive as dormant eggs, and since not all eggs hatch in the next season, eggs will accumulate in the sediment over time, representing an archive of the pond's historical biodiversity. To study the effect of “restoration age” (the time since a water body was restored), we studied groups of ponds that were restored in different years (1998, 2003 and 2007). The restorat…

Abiotic componentBiotic componentEcologyparasitic diseasesfungiBiodiversityBiological dispersalEcological successionSpecies richnessAquatic ScienceBiologyZooplanktonRestoration ecologyLimnologica
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Importance of Climate Change for the Ranges, Communities and Conservation of Birds

2004

Publisher Summary This chapter focuses on the effects of global climate change on the size and position of geographic ranges and the richness and composition of bird communities. Plenty of evidence demonstrates that range boundaries of birds are correlated with climatic factors. In general, the northern range limit of species seems to be influenced rather by abiotic factors such as cold temperatures. The southern range limit of species appears to be determined by climatic factors such as heat or lack of water in arid regions and by biotic factors in more humid regions. For communities, increases in species richness are predicted for northern latitude and high-elevation sites and declines of…

Abiotic componentBiotic componentGeographyLand useRange (biology)EcologyGlobal warmingClimate changeSpecies richnessAridhumanities
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Prebiotic Evolution and the Origin of Life: Chemical and Biochemical Aspects

1988

Evolution, as the term is used here, signifies any development or change adapting to the environment. Chemical evolution connotes changes of chemical substances, it thus signifies that changes occur fundamentally in the molecules. Frequently “chemical evolution” is used synonymously for “abiotic” or “prebiotic formation” of organic molecules in a cosmic system, usually on the prebiotic (or primitive) Earth. It is then assumed that the organic molecules were formed from the constituents of the primitive atmosphere, hydrosphere, and — in part — lithospere.

Abiotic componentChemical evolutionAbiogenesisMolecular evolutionPrebiotic evolutionMoleculeZoologyEarth (chemistry)BiologyHydrosphereAstrobiology
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