Search results for "ambiente"

Boletín ONUBIB: 3/2020

2020

Recurso electrónico. Publicación trimestral de novedades bibliográficas de acceso libre y texto completo de publicaciones de la ONU y de sus Organismos Especializados, … UNRIC y la Biblioteca DHLDL Electronic resource. Quarterly publication of bibliographic novelties of free access and complete text of publications of the UN and its Specialized Organizations, ... UNRIC y library DHLDL

A study on the acid-base properties of pectin and poly-galacturonic acid

2008

Pickering Emulsion Gels Based on Halloysite Nanotubes and Ionic Biopolymers: Properties and Cleaning Action on Marble Surface

2019

We have fabricated ecocompatible Pickering emulsions based on halloysite nanotubes and ionic biopolymers (chitosan and pectin) from renewable resources. The effect of pectin and chitosan on the Pickering emulsion was investigated by direct visualization of the oil droplets and by the thermodynamic characterization at the interface. Pectin enhances the Pickering emulsion stability, while a phase separation and nonhomogeneous gel was observed in the presence of chitosan. We have demonstrated that the Pickering emulsion in a pectin based gel phase is suitable for wax layer removal from a marble surface. A controlled cleaning is achieved by tuning the contact time between the gel and the marble…

Luoghi dell’esclusione, esperienze di rigenerazione

2004

.Presentato a Budapest in prodotto della ricerca NeHpom: un ipertesto pensato per i pratictioners. Gli approcci in Francia, Ungheria, Inghilterra, Norvegia, Estonia, Germania, Italia e Svezia.

Torino, via Arquata: dieci anni di politiche omeopatiche

2008

I limiti, i divieti e le prospettive di riconversione dell'attività di pesca nelle aree marine protette

2012

Atti del Convegno Internazionale su "Promozione e commercializzazione della pesca nel bacino del Mediterraneo. Profili giuridici, economici e gestion…

2005

Environmental Organic Photochemistry: Advances and Perspectives

2013

This review is a survey of recent advances in environment related aspects of organic photochemistry. Besides presenting gen- eral concepts, the manuscript is mainly focused on the photoreactivity of natural organic matter, and on the photochemistry of anthropo- genic substances under natural light irradiation.

Photochemical sample treatment: A greener approach for PCBs analysis in sediments

2012

Electrical installations and industrial outlets are the major source in environment of chlorinated organic compounds. These are distributed in several geographical areas through long-range atmospheric transport and deposition. Additionally, chlorinated organic compounds can be introduced in the food chain and reach the consumers in very high levels. Besides toxicological studies on PCBs, recent research is focusing on more sophisticated analytical methods for PCBs detection. Distribution and dispersion of PCBs mostly occur through air, water, soils, and sediments. The latter are complex matrices whose analysis often involves costly extraction and purification procedures. In particular, PCBs…

Environmental Aspect Concerning Phthalates Contamination: Analytical Approaches and Assessment of Biomonitoring in the Aquatic Environment

2023

This review is a survey of recent progress in studies concerning the impact of phthalic acid esters in aquatic organisms. After introducing the classification, properties, sources, fate, and toxic effects related to phthalates, an overview of the techniques of extraction and analysis of these substances is provided. As a result, the general concepts of environmental bioindicators, biomonitoring systems, and other concepts related to phthalate contamination in the aquatic environment are presented. Recent bioaccumulation data of different phthalates are summarised in a table and organised according to the type of organism, tissue, and geographical area of sampling. Bioindicator organisms tha…