Search results for "Lava"

showing 10 items of 456 documents

Local administration of antisense phosphorothioate oligonucleotides to the c-kit ligand, stem cell factor, suppresses airway inflammation and IL-4 pr…

2001

Abstract Background: The c-kit ligand, stem cell factor (SCF), is an important activating and chemotactic factor for both mast cells and eosinophils. These cells are known to play a fundamental role in the pathogenesis of asthma. Objective: Our goal was to analyze the functional role of SCF in the pathogenesis of asthma. Methods: The expression of SCF was targeted in fibroblasts, epithelial cells, and locally in a murine model of asthma in mice induced by ovalbumin sensitization with an antisense DNA strategy. Results: We could suppress SCF expression in NIH 3T3 fibroblasts and SP1 epithelial cells by a specific antisense phosphorothioate oligonucleotide overlapping the translation start si…

KeratinocytesLung DiseasesOvalbuminAdministration TopicalImmunologyInflammationStem cell factorBiology3T3 cellsAllergic inflammationLeukocyte CountMicemedicineImmunology and AllergyAnimalsInterleukin 4InflammationStem Cell FactorOligonucleotide3T3 CellsAllergensFibroblastsOligonucleotides AntisenseThionucleotidesMast cellAsthmaEosinophilsOvalbuminDisease Models Animalmedicine.anatomical_structureembryonic structuresImmunologybiology.proteinInterleukin-4medicine.symptomBronchoalveolar Lavage FluidThe Journal of allergy and clinical immunology
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Zvaigžņotā Debess: 2006/07, Ziema

2006

Latvijas Zinātnes padome, Latvijas Universitāte

Kosmiskais transporta kuģis „Orion”Ventspils Starptautiskais radioastronomijas centrsKrustvārdu mīklaReliktā starojuma pētījumiKārļa Kaufmaņa stipendiātiASTRONET un NOT sanāksme ViļņāSAS XXVI Ģenerālās Asamblejas Izglītības sesijaNobela prēmija fizikā 2006Plutons Erīda [Pundurplanētas]Sudrabainie mākoņi - novērojumiZvaigžņotā debess ziemāCitplanētu sistēmasŽurnāls "Zvaigžņotā debess"Plastmasas kosmosa kuģis uz MarsuLatvijas Zinātņu akadēmijas Observatorija - bibliogrāfijaMarsa biedrībaSaules sistēmaNolikums par Latvijas Zinātņu akadēmijas Artura Balklava balvuStarptautiskās Astronomijas Savienības 26. Kopsapulces Rezolūcijas (4.-6.)Aktīvā un adaptīvā optikaIlga DaubeLatvijas atklātā fizikas olimpiādeVenēras virsmaNatālija CimahovičaAstronomiskās parādības - 2007Planētas un pundurplanētas - definīcijaMartins Počobuts Ēģiptes zodiaksValsts emeritētie zinātniekiOļesja SmirnovaPlanētu redzamības kompleksā diagramma 2007Arturs BarzdisKoipera joslaStarptautiskās Astronomijas Savienības XXVI Ģenerālā Asambleja PrāgāMatemātikas olimpiāde - uzdevumu atrisinājumi
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Zvaigžnotā Debess: 2007, Vasara

2007

Latvijas Zinātnes padome, Latvijas Universitāte

Krustvārdu mīklaMarsa robotmisija „Phoenix”„CoRoT” pirmā citplanētaZvaigžņotā debess 2007.gada vasarā„Zvaigžņotās Debess” lasītāju priekšlikumiAstronomija skolāBeļģu astronoms Eriks ElstsErnests Brastiņš – piemineklis Rīgas Ata Kronvalda parkāSupernovas apvalks Kasiopeja APirmās zvaigznesLatvijas atklātās matemātikas olimpiāde – uzdevumu atrisinājumiStarptautiskais Astronomijas gads 2009IAU Latvijas Nacionālā komiteja SAG2009 koordinators„Rosetta” – kosmiskā „biljarda bumba”7. Eiropas Simpozijs – Nakts debess aizsardzībaLatvijas Universitātes Astronomijas institūts – vēstureMarsa atmosfēras sastāvsMazā planēta „Vasks”Māris Ābele – 70Maiju Saules piramīdaAstronoma Staņislava Vasiļevska simtgadePasaules filosofu kongress DeliStarptautiskais heliofizikas gadsSaules aktivitāte – atbilde „ZvD” lasītājamStarptautiskās Astronomijas savienības 248. simpozijs ŠanhajāElektrodinamika un vakuumsMalina galaktikaVienādojuma xa+xb=1 saknes novērtējums
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Zvaigžņotā Debess: 2016, Rudens (233)

2016

Latvijas Universitāte

LVU astronomijas studenti – vēstulesLatvijas 44.atklātā skolēnu astronomijas olimpiāde10 skolas ar labākajiem matemātikas eksāmena rezultātiem 2015./16.māc.gadā:NATURAL SCIENCES::Physics::Astronomy and astrophysics [Research Subject Categories]FU Orionis – maiņzvaigžņu fenomensDebess spīdekļi – 2016. gada rudensHabla kosmiskais teleskops – pēdējā apkopeLatvijas 40.skolēnu zinātniskā konferenceLatvijas 66.matemātikas olimpiāde – uzdevumu atrisinājumiPirmie datori LatvijāNeitronu zvaigznes galaktiku magnētiskais lauksBaldones Šmidta teleskopa pirmā fotogrāfija – 50Vladislavam Locānam – 70Natālijai Cimahovičai – 90Viktoram Freijam – 110Kazimiram Lapuškam – 80Latvijas Zinātņu akadēmijai – 70Merkura tranzīts – vērojumi RīgāNASA zonde Juno Jupitera sistēmāPilns Saules aptumsums Sulavesi salā
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Yttrium and lanthanides in human lung fluids, probing the exposure to atmospheric fallout.

2011

International audience; Inhalation of airborne particles can produce crystallization of phosphatic microcrysts in intraaveolar areas of lungs, sometimes degenerating into pulmonary fibrosis. Results of this study indicate that these pathologies are induced by interactions between lung fluids and inhaled atmospheric dust in people exposed to volcanic dust ejected from Mount Etna in 2001. Here, the lung solid-liquid interaction is evaluated by the distribution of yttrium and lanthanides (YLn) in fluid bronchoalveolar lavages on selected individuals according the classical geochemical approaches. We found that shale-normalised patterns of yttrium and lanthanides have a 'V shaped' feature corre…

Lanthanide010504 meteorology & atmospheric sciencesHealth Toxicology and Mutagenesis550 - Earth sciences010501 environmental sciences01 natural sciencesLanthanoid Series ElementsACTIVATED COMPLEXMass SpectrometryHuman lungLanthanideELEMENTSYttrium RadioisotopesYttriumWaste Management and DisposalLungInhalation ExposureInhalationDendriform pulmonary ossificationSEAWATERPollutionmedicine.anatomical_structureItalyEnvironmental chemistryThermodynamicsBronchoalveolar Lavage FluidAlgorithmsBronchoalveolar lavageCHEMICAL-REACTIONSEnvironmental EngineeringChromatography Gas[SDU.STU]Sciences of the Universe [physics]/Earth Scienceschemistry.chemical_elementMineralogyVolcanic EruptionsWATERSmedicinebronchoalveaolar lavagesPARTICLESEnvironmental ChemistryHumansIn patientDISSOLUTION RATES0105 earth and related environmental sciencesRARE-EARTH PNEUMOCONIOSISPrecipitation (chemistry)YttriumEnvironmental ExposureAerosolSettore GEO/08 - Geochimica E VulcanologiachemistryModels ChemicalMedical geochemistry13. Climate actionMedical geochemistry; Lanthanide; bronchoalveaolar lavagesVolcanic ashVolcanic ash
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Growth and survival of European whitefish larvae under enhanced UV-B irradiance

2004

Two laboratory rearing experiments with newly hatched European whitefish Coregonus lavaretus larvae were performed to study the effects of UV-B (280–315 nm) radiation on their survival and growth. The results indicate that under normal circumstances in Finnish lakes, enhanced UV irradiance will not be a threat to the survival of newly hatched European whitefish larvae.

LarvaDevelopmental stagefoodCoregonus lavaretusfood.dishEcologyIrradianceZoologyAquatic ScienceBiologyUltraviolet radiationEcology Evolution Behavior and SystematicsUv b radiationJournal of Fish Biology
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Il design nelle produzioni in pietra lavica dell’Etna. Processi naturali, artificiali, culturali

2018

Il testo indaga il progetto di elementi e oggetti in pietra lavica, che declina il carattere di “preziosità” di un materiale connotato da una forte identità territoriale e versatilità nell’uso. In particolare, di alcune produzioni in lava si vuole esplorare la capacità comunicativa ed evocativa rispetto al “paesaggio culturale” del Monte Etna, indicato dall’UNESCO come “uno dei più attivi vulcani iconici del mondo e uno straordinario esempio di processi geologici continui ”. Si analizzeranno alcune sperimentazioni che, pur esprimendo declinazioni del design diverse per modalità di produzione e fruizione condividono l’attenta considerazione degli originari processi di formazione del material…

Lava stone lithic design cultural landscape natural-artificial territoryPietra lavica design litico paesaggio culturale naturale-artificiale territorioSettore ICAR/13 - Disegno Industriale
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Volatiles in pantellerite magmas: A case study of the Green Tuff Plinian eruption (Island of Pantelleria, Italy)

2013

Abstract The Green Tuff (GT) Plinian eruption, the largest in magnitude at Pantelleria, erupted 3 to 7 km3 DRE of pantellerite magma and a small volume of trachyte. Fifty-nine anorthoclase-hosted melt inclusions from the two basal pumice members were analyzed by FT-IR spectroscopy in order to assess the pre-eruptive H2O content in the pantellerite melt. Microanalytical methods were used to determine major element, Cl, F and S contents. Melt inclusions and glassy groundmasses have a nearly homogeneous pantelleritic composition (peralkaline index = 1.9-2.2) and variable water contents ranging from 1.4 to as high as 4.2 wt %, i.e. much higher than the 1.4 wt % of earlier published studies. The…

LavaSettore GEO/07 - Petrologia E PetrografiaGeochemistryTrachyteMagma chamberStrombolian eruptionGeophysicsEffusive eruptionGeochemistry and PetrologyPumiceMagmaThe Green Tuff (GT) Plinian eruption the largest in magnitude at Pantelleria erupted 3 to 7 km 3 DRE of pantellerite magma and a small volume of trachyte. Fifty-nine anorthoclase-hosted melt inclusions from the two basal pumice members were analyzed by FT-IR spectroscopy in order to assess the pre-eruptive H2Ocontent in the pantellerite melt. Microanalytical methods were used to determine major element Cl F and S contents. Melt inclusions and glassy groundmasses have a nearly homogeneous pantelleritic composition (peralkaline index = 1.9-2.2) and variable water contents ranging from 1.4 to as high as 4.2 wt % i.e. much higher than the 1.4 wt % of earlier published studies. The chlorine content is constant at about 1 wt %. Combined Cl and H2O data were used to estimate a confining pressure of about 50 MPa (depth around 2-3 km) for the GT magma chamber. The chamber was characterized by a compositional zoning with a dominant pantellerite overlying a trachyte magma. Soon after the GT eruption intra-caldera volcanism was dominated by the eruption of voluminous trachyte lavaflows while pantellerite melt production resumed after about 20 ka with numerous low-volume mildly explosive (Strombolian) to effusive eruptions. Comparison with data from the literature reveals that despite the differentexplosivity the post-caldera Strombolian eruptions and the GT Plinian eruption were fed by pantelleritic magmas with similar water contents. Chlorine and CO2contents suggest that the young magma reservoirs feeding the Strombolian to effusive activity were deeper (h≥4.5 km) than the much larger (based on erupted volumes) magma chamber which fed the GT eruptionGeologyMelt inclusionsJournal of Volcanology and Geothermal Research
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Lavandula × intermedia—A Bastard Lavender or a Plant of Many Values? Part I. Biology and Chemical Composition of Lavandin

2023

This review article is the first in a series that provides an overview of the biology, chemistry, biological effects, and applications of Lavandula × intermedia (lavandin, LI). Despite its prevalence in cultivation and on the essential oil market, lavandin has received limited attention from the scientific community. Remarkably more attention is paid to Lavandula angustifolia (LA), which is commonly regarded as the superior lavender and has been extensively researched. Our goal is to provide a comprehensive review of LI, as none currently exists, and assess whether its inferior status is merited. In the first part, we outline the biological and chemical characteristics of the plant and comp…

Lavandula hybridaLavandula angustifoliacultivarsoil yieldchemical compositionLavandula × intermediaessential oilMolecules
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Lavandula x intermedia—A Bastard Lavender or a Plant of Many Values? Part II. Biological Activities and Applications of Lavandin

2023

This review article is the second in a series aimed at providing an in-depth overview of Lavandula x intermedia (lavandin). In part I, the biology and chemistry of lavandin were addressed. In part II, the focus is on the functional properties of lavandin and its applications in industry and daily life. While reviewing the biological properties, only original research articles employing lavandin were considered. Lavandin essential oil has been found to have antioxidant and biocidal activity (antimicrobial, nematicidal, antiprotozoal, insecticidal, and allelopathic), as well as other potential therapeutic effects such as anxiolytic, neuroprotective, improving sleep quality, antithrombotic, an…

Lavandula hybridaantimicrobial activitybiocidal activityLavandula angustifoliaanxiolytic activityantioxidant activityLavandula x intermediaessential oilanti-inflammatoryMolecules
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