Search results for "Iode"
showing 10 items of 1284 documents
Inserto di collagene biodegradabile vs mitomicina-C nella trabeculectomia: risultati a medio termine di uno studio prospettico di fase II.
2010
Organophosphonate utilization by the wild‐type strain of cladosporium resinae
1997
We studied the biodegradation of compounds containing phosphorus‐to‐carbon bond by using wild‐type strain of Cladosporium resinae. The substrate specificity of the strain was studied and we found that it is able to utilize a range of structurally diverse organophosphonates as a sole source of phosphorus. This ability is inducible as indicated by the presence of a lag phase of the growth. A popular herbicide glyphosate is also degraded by the fungi. This indicates that Cladosporium resinae may play an important role in biodegradation of this herbicide. The strain which we used, however, did not metabolise any phosphonates when they served as the sole carbon or nitrogen sources.
Influenza delle lavorazioni sulle proprietà di compositi a base di polimeri biodegradabili e farina di legno
2008
Compositi polimerici biodegradabili con fibre di kenaf
2011
Étude de l’évolution du potentiel génétique de populations bactériennes dégradant l’atrazine
2011
17 pages de références bibliographiques et 20 pages d'annexes; L’atrazine, un des herbicides les plus utilisés pour contrôler le développement des plantes adventices dans les cultures, a conduit à la contamination de l’environnement. L’exposition chronique à cet herbicide a conduit à l’émergence de populations microbiennes du sol capables de dégrader l’atrazine et de l’utiliser comme une source d’azote pour leur croissance. Ces populations microbiennes sont responsables de la biodégradation accélérée (BDA) de l’atrazine, un service écosystémique contribuant à diminuer la persistance de cet herbicide dans l’environnement. L’objectif de ce travail était d’étudier les mécanismes génétiques et …
Chemical Composition and Evaluation of Insecticidal Activity of Calendula incana subsp. maritima and Laserpitium siler subsp. siculum Essential Oils …
2022
The problems of the environment and human health related to the use of synthetic and broad-spectrum insecticides have increasingly motivated scientific research on different alternatives and among these, the use of green systems, such as essential oils, have been explored. Several species of the Apiaceae and Asteraceae families, aromatic herbs rich in secondary bioactive metabolites, are used in the industrial field for pharmaceutical, cosmetic, and food purposes. Different essential oils extracted from some species of these families have shown acute toxicity and attractive and/or repellent effects towards different insects. In our work, we investigated the toxic potential of Calendula inca…
Datu pārraides diode
2015
Pasaulē arvien biežāk notiek datorsistēmu “uzlaušana” un kompromitēšana. Datorsistēmas var saturēt gan klasificētu informāciju, kuras izpaušana ir nepieļaujama, gan infrastruktūru, kuras bojāšana var radīt smagas sekas un apdraudēt cilvēku dzīvības. Bieži vien informācijas izpaušanas vai datorsistēmas bojāšanas iemesls ir saistīts ar cilvēcisko faktoru. Cilvēks bieži vien izvēlas ērtības un acumirklīgus labumus, nevis drošu datorsistēmas aizsardzību. Datorsistēmu aizsardzībā, iepriekš minētās problēmas atrisina vienvirziena datu pārraides risinājums – “Datu pārraides diode”. Darba mērķis izveidot vienvirziena datu pārraides risinājumu – “Datu pārraides diodi”. Darba izstrādes gaitā tika iep…
Biodegradable plastics for hygienic disposable products
2003
Disposable products satisfy many requirements that are difficult to achieve with long-life products, so we are obliged to use them even if they have a strong environmental impact. Furthermore it is interesting to note that large part of these products are made of plastic materials. This class of products can be redesigned with a smaller environmental impact using biodegradable polymer. The case study of a disposable product (a toothbrush for restaurants made of a starch based plastic) will be discussed as an application example
Identification of microbial taxa involved in cultural heritage deterioration and able to produce health hazardous substances by molecular techniques.
2008
Fungi and bacterial, wide-spread in biosphere environments, are the main microorganisms related to the deterioration of cultural assets but, moreover, complex microbial communities may emit mixed aerosol into indoor air. In this study the microbial colonization is investigated from to point of view, conservation of cultural heritage and related potential illness to visitors or professionals. The sampling was performed by non-destructive procedures on works of art surfaces, and by the gelatin membrane filter method (Sartorius) for aerosol. The identification of microbial taxa was performed by molecular analyses based on PCR, sequencing, sequence comparison techniques and, particularly for fu…