Search results for "ToF"

2002

We carried out enclosure experiments to assess the potential deleterious effects of the alien species common carp (Cyprinus carpio L.), mosquitofish (Gambusia holbrookii Gir.), and pumpkinseed sunfish (Lepomis gibbosus L.) on water quality and food web in a severely degraded floodplain wetland, the Spanish National Park Las Tablas de Daimiel. With addition of either carp or pumpkinseed sunfish, chlorophyll a and turbidity levels, as well as concentrations of total phosphorus and total nitrogen increased. The magnitude of this increase depended on fish species and was severest in the carp treatment. Mosquitofish did not significantly affect water quality. In the treatments with fish, cyclopo…

Residui di prodotti fitosanitari in campioni biologici umani ed impatto sulla salute.

2012

Ādas fulorescences un izkliedes kinētikas mērījumi pikosekunžu lāzera ierosmē

2017

Lai gan pirmajā acu uzmetienā ādas autofluorescence un starojuma izkliedes kinētikas ir it kā vienkāršas metodes vides pētīšanai un tās parametru noteikšanai, tieši tāpēc tās ir efektīvas. Izmantojot ādas veidojumu raksturošanai metodes, kas nav nepamatoti sarežģītas, iespējams iegūt lielumus, kas raksturo dažādas ādas pataloģijas. Fotonu uzvedības ādā apraksts ir svarīga sastāvdaļa optiskās diagnostikas attīstībai. Darbā tika pētīti ādas veidojumi, izmantojot autofluroescences mērījumus un fotona lidojuma laika ādā mērījumus. Tika iegūti vairāki parametri, ar ko raksturot dažādas ādas pataloģijas, kā arī apskatīta korelācija starp autofluroescenci un fotona lidojuma laika ādā raksturlielum…

Structure-activity relationships of polymethoxyflavones and other flavonoids as inhibitors of non-enzymic lipid peroxidation

1990

Polymethoxylated flavones and C-glycosyl derivatives isolated from medicinal plants besides other flavonoid compounds were studied for their influence on lipid peroxidation induced by FeSO4+ cysteine in rat liver microsomes. A number of hydroxyflavones (e.g. luteolin); C-glycosyl-flavones (e.g. orientin); methoxyflavones (e.g. gardenin D) and flavonols (e.g. datiscetin), as well as the flavanol leucocyanidol and the biflavone amentoflavone behaved as inhibitors of non-enzymic lipid peroxidation. Structure-activity relationships were established and it was observed that the structural features for active polyhydroxylated compounds were different from those of polymethoxylated flavones, antip…

Aircraft-based operation of an aerosol mass spectrometer: Measurements of tropospheric aerosol composition

2006

The Aerodyne quadrupole aerosol mass spectrometer was deployed on the Falcon twin jet research aircraft operated by Deutsches Zentrum für Luft- und Raumfahrt (DLR). This was the first deployment of an AMS in a jet aircraft. Aerosol mass concentration measurements in the troposphere up to altitudes of about 11 km were performed within two measurement flights on 12 and 14 May 2003 over southern Germany. Background aerosol data were gained up to 6 km, while aircraft exhaust aerosol was be sampled at higher altitudes on 14 May, indicating the presence of sulfuric acid and unburned hydrocarbons in the exhaust particles. The boundary layer aerosol on 12 May was found to be composed of 49% organic…

Unraveling the mechanisms of action of lactoferrin-derived antihypertensive peptides: ACE inhibition and beyond

2015

Hypertension is one of the most important causes of cardiovascular and renal morbidity and mortality, and it represents a serious health problem in Western countries. Over the last few decades scientific interest in food-derived antihypertensive peptides has grown as an alternative to drugs in the control of systemic blood pressure. Most of these peptides target the angiotensin I-converting enzyme (ACE) but emerging evidence points to other antihypertensive mechanisms beyond ACE inhibition. The milk protein lactoferrin (LF) is a good source of orally active antihypertensive peptides the characterization of which, including ex vivo functional assays and in vivo approaches, shows that they mi…

Tecniche fotogrammetriche digitali per la conservazione e il restauro di apparati decorativi

2009

The paper describes the photogrammetric survey of the frescoes in the church of Saints Cosma and Damiano in Cefalù and in the “Sala della Fontana” of the “Palazzo della Zisa” in Palermo. The use of the digital photogrammetry, besides guaranteeing the precision and the reliability of the measurements, allow a simplification of the operations for investigate the state of conservation. The photogrammetric operations have been carried out in different way in consideration of the different logistic situation. The interior of the Church of the Saints Cosma and Damiano didn't introduce particular problems of accessibility; the frescoes were situated in an enough favourable position for topographic…

¿Cabe la izquierda en Europa?

2000

Individual and Combined Effect of Zearalenone Derivates and Beauvericin Mycotoxins on SH-SY5Y Cells

2020

Beauvericin (BEA) and zearalenone derivatives, &alpha

Inhibitory Activity of Shrimp Waste Extracts on Fungal and Oomycete Plant Pathogens

2021

(1) Background: This study was aimed at determining the in vitro inhibitory effect of new natural substances obtained by minimal processing from shrimp wastes on fungi and oomycetes in the genera Alternaria, Colletotrichum, Fusarium, Penicillium, Plenodomus and Phytophthora