Search results for " EMI"
showing 10 items of 1830 documents
Blood flow and metabolic microenvironment of brain tumors
1994
Summarizing thesein vivo data in the context of brain tumor therapy, the following aspects are of particular importance: Low and heterogeneous tumor blood flow may — in addition to the limiting effects of the blood-brain barrier — result in compromised delivery of drugs from blood to the tissue. Low tumor pO2 reduces sensitivity to standard radiation and ‘O2-dependent’ anticancer drugs. Treatment efficacy may be further altered by changes of tumor pH. Particularly acidosis can decrease radiation sensitivity and modulate the cytotoxicity of anticancer drugs. In the following presentations, these aspects will be discussed regardingin vivo data obtained with positron emission tomography.
Theragnostic Use of Radiolabelled Dota-Peptides in Meningioma: From Clinical Demand to Future Applications.
2019
Meningiomas account for approximately 30% of all new diagnoses of intracranial masses. The 2016 World Health Organization’s (WHO) classification currently represents the clinical standard for meningioma’s grading and prognostic stratification. However, watchful waiting is frequently the chosen treatment option, although this means the absence of a certain histological diagnosis. Consequently, MRI (or less frequently CT) brain imaging currently represents the unique available tool to define diagnosis, grading, and treatment planning in many cases. Nonetheless, these neuroimaging modalities show some limitations, particularly in the evaluation of skull base lesions. The emerging evidence supp…
SMOS REFLEX 2003: L-band emissivity characterization of vineyards
2005
The goal of the Soil Moisture and Ocean Salinity mission over land is to infer surface soil moisture from multiangular L-band radiometric measurements. As the canopy affects the microwave emission of land, it is necessary to characterize different vegetation layers. This paper presents the Reference Pixel L-Band Experiment (REFLEX), carried out in June-July 2003 at the Vale/spl grave/ncia Anchor Station, Spain, to study the effects of grapevines on the soil emission and on the soil moisture retrieval. A wide range of soil moisture (SM), from saturated to completely dry soil, was measured with the Universitat Polite/spl grave/cnica de Catalunya's L-band Automatic Radiometer (LAURA). Concurre…
Soil carbon and soil physical properties under land use change in a protected area of Sicily
2010
This work investigated the role of land cover and land use change as a soil’s ability to store carbon and reduce carbon dioxide emission in a Mediterranean area. Using both historic records and land cover crop maps we estimated the effect of land cover change on the carbon stock from 1972 to 2008 in a natural reserve (Grotta di S. Ninfa) in the West of Sicily. Five paired sites in different soil types were selected and five land use classes (arable land, vineyard, olivegrove, gariga, eucalyptus afforestation) were analyzed. We studied the effect of land use on soil organic carbon (SOC) content in bulk soil and 1000-2000 m, 500-1000 m, 250-500 m, 63-250 m, 25-63 m and <25 m size fractions. F…
What You Should Know About Carbon Markets
2008
Since the entry into force of the Kyoto Protocol, carbon trading has been in continuous expansion. In this paper, we review the origins of carbon trading in order to understand how carbon trading works in Europe and, specifically, the functioning of the European Union Emission Trading Scheme (EU ETS) and the workings of several spot, futures and options markets where European Union Allowances are traded. As well, the linking of the EU ETS with the other United Nations carbon markets is also studied.
Tra «pentoloni per il solfato ammonico» e «un numero inverosimile di tubi»: le lettere di Carlo Emilio Gadda all’Ammonia Casale
2022
The essay analyzes the correspondence between Carlo Emilio Gadda and the "Ammonia Casale S.A." which intermittently covers a period from April 1927 to January 1940, with a long break between the autumn of 1931 and the spring of 1936. It is a decisive period of time on the public and private level. Reading the correspondence allows you to retrace an entire page of the history of Italian industry under fascism from an eccentric perspective.
L'epistolografo bugiardo. Carlo Emilio Gadda
2007
Questo libro investiga il magmatico intreccio di verità e finzione, di autobiografia e invenzione letteraria che pervade le lettere di Carlo Emilio Gadda, esaminando il rapporto di contiguità e di reciproco interscambio sussistente tra la prosa epistolare e l'opera creativa, nella convinzione che le missive possano costituire una privilegiata chiave d'accesso per penetrare nell'officina inventiva del narratore lombardo. L'analisi di Claudia Carmina segnala gli snodi cruciali e le successive trasformazioni cui, passo passo, è sottoposta l'identità travestita dell'epistolografo: dalle lettere dell'infanzia e dell'adolescenza alle epistole dal fronte, dal carteggio con Tecchi e con Betti al ma…
Nel «garbuglio dei tubi». Le lettere dell’ingegner Gadda
2017
Il saggio propone un'analisi del carteggio di Carlo Emilio Gadda con l’«Ammonia Casale», che costituisce un osservatorio d’eccezione da cui mettere a fuoco le contraddizioni dello scrittore-ingegnere. L’epistolario comprende 54 messaggi di Gadda e 26 dell’«Ammonia Casale S.A.» e copre l’arco di tempo decisivo che va dall’aprile 1927 al gennaio del 1940 (con una lunga interruzione tra l’autunno del 1931 e la primavera del 1936): sono gli anni cruciali dell’apprendistato letterario, in cui il romanziere fa le sue prime prove pubbliche. Nella corrispondenza si deposita quindi un collaudato repertorio di situazioni e di temi, che riappariranno, variati, nell’opera: il tema del viaggio, inteso c…
Geographical mapping of metabolites in biological tissue with quantitative bioluminescence and single photon imaging
1993
This article features a novel technique for measuring the spatial distribution of metabolites, such as ATP, glucose, and lactate, in rapidly frozen tissue. Concentration values are obtained in absolute terms and with a spatial resolution of single-cell dimension. The method is based on enzymatic reactions that link the metabolite of interest to luciferase with subsequent light emission. Using a specific array, cryosections are brought into contact with the enzymes in a well-defined, reproducible way inducing a distribution of light across the section with an intensity that is proportional to the metabolite concentration. The emitted light can be visualized through a microscope and an imagin…
MTA HP Repair stimulates in vitro an homogeneous calcium phosphate phase coating deposition
2019
Background To study the mineralization capacity in vitro of the bioceramic endodontic material MTA HP Repair. Material and methods Bioactivity evaluation in vitro was carried out, by soaking processed cement disk in simulated body fluid (SBF) during 168 h. The cement surface was studied by Fourier transform infrared spectroscopy (FT-IR), field emission gun scanning electron microscopy (FEG-SEM) and energy dispersive X-ray analysis (EDX). Release to the SBF media of ionic degradation products was monitored using inductively coupled plasma atomic emission spectroscopy (ICP-AES). Results FT-IR showed increasing formation of phosphate phase bands at 1097, 960, 607 and 570 cm-1 with prolonged SB…