Search results for "Iode"

Biotekstila pārbaudes bioloģiskajās sistēmās

2020

Biotekstilmateriāli nodrošina barības vielām bagātu vidi cilvēka veselībai kaitīgiem mikroorganismiem, palielinot antimikrobiāla biotekstila pieprasījumu. Dzintars tiek uzskatīts par potenciālu aizsarglīdzekli. Pētījuma mērķis bija noteikt biotekstila un tā ražošanā izmantoto dzintara mikro- un nanodaļiņu ietekmi uz mikroskopiskām sēnēm, biotekstila biodegradācijas iespējas augsnē, pielietojot radiālās augšanas, disku difūzijas, biotekstila rezistences noteikšanas un puves aizkavēšanas identifikācijas metodes. Dzintara daļiņu klātbūtne būtiski neietekmē mikroskopisko sēņu micēlija attīstību un sporulēšanu (P<0,05). Pie atsevišķām koncentrācijām uzrāda nenozīmīgu fungistatisku tendenci, vizu…

Muzeju kolekciju un to glabāšanas telpu mikoloģiskā kontaminācija un biodegradācijas novēršanas paņēmienu analīze

2018

Mūsdienās sēņu kontaminācija ir pieaugoša problēma. Muzeju kolekciju eksponāti un to glabātuves ir nopietni apdraudētas sēņu kontaminācijas dēļ. Pētījuma mērķis bija noteikt mikoloģisko kontamināciju krājumu telpās un uz kolekciju eksponātiem Rīgas muzejos, un veikt biodegradācijas novēršanas paņēmienu analīzi. Gaisa paraugi tika ievākti no 42 krājumu telpām. Pārbaudīti 90 kolekciju eksponāti. Paraugi tika ievākti no trīs Rīgas muzejiem un tiem piederošām krātuvēm. Ievāktie paraugi tika sēti uz agarizētām barotnēm un kultivēti 24oC 10-12 dienas, lai izveidotos sēņu kolonijas, kuras tiktu pēc tam identificētas. Gaisā sēņu kontaminācija bija paaugstināta pavasara periodā. Rīgas muzeju krātuvē…

Metodologie Biomolecolari per la Conservazione e il Restauro

2011

Il Tabulario della Cattedrale. Studio Conoscitivo e Restauro di Documenti in Carta e Pergamena

2008

Caratterizzaione di consorzi microbici causa di deterioramento dei beni culturali e potenziali patogeni per l'uomo mediante analisi della molecola de…

2008

Indagini Biomolecolari per la identificazione di specie batteriche deteriogene sui dipinti

2008

PHB-based films as matrices for pesticides

2002

Abstract The effects of pesticides incorporated into PHB-based polymeric matrices on the biodegradability of films and antifungal efficiency of immobilised pesticides to Botrytis cinerea was studied. The mass loss of tested PHB-based films for 2 weeks was 40–50% and after 4 weeks 92–96% of the initial mass. The fungicides Ronilan and Sumilex immobilised into the polymeric matrices did not depress the film degradation rate. PHB-based films caused changes in the soil microorganism association. Fungicides immobilised in PHB-based matrices decreased the count of the phytopathogenic fungus B. cinerea.

Cloning of an alkane hydroxylase system in a long chain n-alkane- degrader Gordonia sp.

2008

Five Gram-positive GC rich n-alkane degraders were isolated from a long-term accidentally contaminated beach in Sicily and identified as one Nocardia, two Rhodococcus and two Gordonia strains (Quatrini et al., 2008 J. Appl. Microbiol. 104:251-9). All the isolates were able to grow on long and very long chain n-alkanes up to C36. Diverging alkane-hydroxylase encoding genes (alkB) were detected by PCR using degenerated primers in all the strains. Multiple sequences were obtained from the Nocardia strain while only one alkB gene was detected in Rhodococcus and Gordonia. The aim of this work is to genetically characterize the alk cluster in one of the two Gordonia strains called SoCg. Pulsed Fi…

BIODEGRADACJA ZWIĄZKÓW FOSFONOWYCH PRZEZ GRZYBY

2020

Phosphonates are the group of organophosphorus compounds, which are characterized by the presence of covalent bond(s) between carbon and phosphorus atom in their structure. Both; the natural and synthetic phosphonic compounds, are encountered in various ecosystems, however because of their wide range of applications, the latter ones are considerably more frequently discussed. Regarding the broad spectrum of biological activity, capability to chelate metal cations and environmental stability of direct carbon to phosphorus bond under physiological conditions, phosphonic compounds found a variety of applications e.g. as pesticides, drugs, anticorrosive agents, additives to surfactants and flam…

Photobiomodulation Therapy in the Management of Burning Mouth Syndrome: Morphological Variations in the Capillary Bed

2020

Burning mouth syndrome (BMS) is an idiopathic condition that manifests itself primarily with the onset of a burning sensation. The aim of this research was to perform photobiomodulation therapy (PBM) using a diode laser on the oral mucosa of BMS patients, followed by an objective evaluation of the morphological changes in the vascular bed underlying the mucosa using polarized light videocapillaroscopy. A group of 40 patients were included in the study. The patients were randomly divided into two groups (using simple randomization) as follows: 20 patients were assigned to the laser group and 20 patients were assigned to the placebo group. Each patient of the laser group received eight irradi…