The contribution of the sciences,technology and innovation to sustainable development: the application of sustainability science from the perspective of UNESCO’s experience

The contribution of scientific knowledge and innovation to sustainability is demonstrated. Theory, discoveries, programmes and activities in both the natural as well as social sciences fields have greatly helped with the environmental, economic and social challenges of the past and current centuries, especially in the past 50 years or so. Nowadays, we increasingly realize the intimate link between science and society, and the need not only for science to inform policy but also to address requests by governments and the multiple stakeholders confronted with the challenge to achieve sustainable development. Current barriers to how science is conceived and related education is delivered hamper true interdisciplinarity, and the emerging field of sustainability science attempts inter alia to clarify how ‘a new generation of science’ can be designed so as to promote more integrated thinking to tackle complex societal issues. At the international level, and more specifically in the context of the United Nations, the practice of science has always entailed the need to solve problems such as climate change, ozone depletion, disaster risk, lack of food security, biodiversity loss, social instability and ineffective governance—to cite a few. In this regard, science in an intergovernmental context is by definition science that has to assist with the struggle for sustainability. Yet, a higher level of integration and cross-fertilization among disciplines as well as of participation among concerned stakeholders in the design and implementation of science-based programmes and activities carried out by the United Nations (and, in this article, the specific case of its Educational, Scientific and Cultural Organization—UNESCO—is presented) seems to be needed. The debate on sustainability science carried out in the academic circle and the experience of UNESCO in this area can be mutually supportive in further elucidating how, practically, the approach of sustainability science can enhance the achievement of sustainable development at multiple scales.     

Soil fertility,crop biodiversity,and farmers’ revenues: Evidence from Italy

Ambio - This paper analyzes the interplay between soil fertility, crop biodiversity, and farmers’ revenues. We use a large, original, farm-level panel dataset. Findings indicate that both...     

TENORM employed as inert material for house building: a model for evaluating the radon activity enhancement

Environmental Science and Pollution Research - Radon exhalation from soil and ores is among the most dangerous risks for the public health care. The impact becomes even more powerful when...     

Kinetic modelling of the pyrolysis of Miscanthus × Giganteus from the thermogravimetric analysis of its fractionated components

In this paper the thermal behaviour of Miscanthus × Giganteus (M×G) is studied by thermogravimetric analysis. In order to characterise the thermal behaviour of its cellulose, hemicellulose and lignin, the raw M×G material was treated sequentially by water, H₂SO₄ and KOH. The global kinetic parameters for each component were determined by subsequent modelling of the TG data with the Ozawa-Flynn-Wall method and multivariate non-linear regression. It is found that the global pyrolysis of M×G can be satisfactorily described using a six steps-kinetic scheme. The analytical method proposed here can be probably extended without too many efforts to other biomass products. An erratum to this article can be found at     

Steam gasification of waste tyre: Influence of process temperature on yield and product composition

An experimental survey of waste tyre gasification with steam as oxidizing agent has been conducted in a continuous bench scale reactor, with the aim of studying the influence of the process temperature on the yield and the composition of the products; the tests have been performed at three different temperatures, in the range of 850–1000 °C, holding all the other operational parameters (pressure, carrier gas flow, solid residence time). The experimental results show that the process seems promising in view of obtaining a good quality syngas, indicating that a higher temperature results in a higher syngas production (86 wt%) and a lower char yield, due to an enhancement of the solid–gas phase reactions with the temperature. Higher temperatures clearly result in higher hydrogen concentrations: the hydrogen content rapidly increases, attaining values higher than 65% v/v, while methane and ethylene gradually decrease over the range of the temperatures; carbon monoxide and dioxide instead, after an initial increase, show a nearly constant concentration at 1000 °C. Furthermore, in regards to the elemental composition of the synthesis gas, as the temperature increases, the carbon content continuously decreases, while the oxygen content increases; the hydrogen, being the main component of the gas fraction and having a small atomic weight, is responsible for the progressive reduction of the gas density at higher temperature.     

Reduction of Cr(VI) by caffeic acid

In the soil-plant system, the Cr(VI) toxicity can be moderated through redox reactions involving phenolic substances. In such a context, we report the reducing activity of caffeic acid (CAF) towards Cr(VI) in aqueous phase. The redox reaction between Cr(VI) and CAF was studied as a function of both time and pH at different initial metal concentrations. The reaction was particularly effective at pH 2.5. The kinetic data indicate that the reaction proceeds through two steps: the first is faster and involves four electrons, the latter, which is slower, five electrons. The chromatograms evidence the formation of oxidation products (OP) with a different redox activity towards Cr(VI). A yield of Cr(III) equal to that obtained at pH 2.5 and pH 3.1 in about 7 and 25 h, respectively, was reached at pH 4.2 only after a much longer reaction time (50h). At pH>4.2 the reaction occurred even more slowly, and its kinetic trend was more and more difficult to study at pH values higher than 5.0 due to the formation of precipitates. Other phenolics investigated (o-, m-, p-coumaric acids) showed a reducing activity negligible compared to that of CAF: about 30% of p-coumaric acid was oxidized at pH 2.5 only after two months of reaction.     

Prenatal diagnosis of ventricular aneurysm: a report of two cases and a review

Ventricular aneurysms have rarely been reported prenatally. Their prognosis is variable depending on factors such as early detection, their relative size in comparison to the ventricular cavity, growth on follow-up, and signs of cardiac failure. In view of the fact that it may be useful to report on additional cases in order to make available further information on aetiology, prognosis and neonatal management, we hereby report on two cases of ventricular aneurysm with good mid-term prognosis. One case of apical aneurysm of the left ventricle was associated with a muscular ventricular septal defect, the features of which are compatible with a fetal myocardial infarction and ventricular septal rupture in absence of coronary artery anomalies as demonstrated by catheterisation. Another case of sub-tricuspidal aneurysm of the right ventricle associated with mitral prolapse appears to be a component of diffuse connective dysplasia. Despite the early gestational age at diagnosis, the large size of the aneurysm and the associated defect, both the infants were asymptomatic in infancy prompting a conservative management. Copyright © 2002 John Wiley & Sons, Ltd.     

Application of fuzzy logic and sensitivity analysis for soil contamination hazard classification

The present article is aimed at illustrating a methodology for a rapid and effective assessment of pollution hazard connected with the presence of uncontrolled landfills. In particular, by means of a fuzzy approach, the criterion adopted allowed a comparison of the results obtained from a cross analysis of some intrinsic characteristics of the single landfills and the territory where they are located. Their identification shows the most relevant environmental problem. Therefore, we have classified each site within a hazard scale enabling us to understand which one requires to be checked more urgently, to do instrumental surveys and, if needed, to do restoration and reclamation. Moreover, the sensitivity analysis we carried out allowed us to identify which is the best membership function belonging and which is the best defuzzification method. That is, in particular, the trapezoidal function and the centroid method. The proposed fuzzy approach, supported by the sensitivity analysis, has revealed to be an important tool for supporting decisions, in order to optimise technical and economic resources.