Can Sustainability Be Applied to Our Remediation Challenges?

Author(s):  
Peter Booth ◽  
Vicky Gaskin

There are many environmental remediation challenges around the world today with a radiological connotation. These in turn relate to all aspects of the nuclear industry life cycle as well as the NORM industries and consequences of accidents/incidents. In reality, apart from one or two major exceptions in a few counties who have extensive budgets allocated to environmental remediation, we do not generally see a lot of real progress in the protection of human health and the environment from legacy issues. It is important therefore to determine why this is the case and if there is anything that can be undertaken to improve the situation. There are a number of reasons potentially leading to this lack of progress, namely: • A lack of available funding; • The diversion of funds to other issues deemed to be a greater priority; • No practical experience in resolving such problems; • Lack of established regulatory and/or procedural infrastructure. More often than not when environmental remediation challenges exist, the decision makers only tend to look for final solutions. If such final solutions can’t be achieved, often because of funding restrictions, then little or no progress is generally made. However, there is the potential through the phasing of environmental remediation work to find some early winners and to start to reduce the risk and detriment to human health and the environment, even if the improvement seen is in the short term initially. When further funding becomes available or technology improves then the longer term solutions could be implemented. It is important to ensure that any interim solutions are implemented in a manner such that further options or final solutions are not jeopardised. In reality therefore it should be possible to introduce greater sustainability into how we approach environmental remediation, rather than admit defeat at the outset. There are many different definitions for the term sustainability but a useful one can be referenced from the US Sustainable Remediation Forum (SURF): • “Sustainable remediation is broadly defined as a remedy or combination of remedies whose net benefit on human health and the environment is maximised through the judicious use of limited resources.” Industry in general and the nuclear related industries in particular gain very little support and engender distrust so demonstrating some progress in environmental remediation can only be beneficial. We cannot keep leaving legacy issues to get worse. The whole sustainability argument is therefore inextricably linked into the decision making process and additionally often the success of stakeholder engagement. Importantly, on the other hand progress should not be achieved merely for the sake of it, there needs to be a demonstration of overall net benefit. This paper will aim to demonstrate how the application of sustainable decisions and approaches can facilitate improved environmental remediation in those regions where in general the legacy issues remain unsolved. Such sustainable solutions can help deliver both short and long term net benefit to any particular environmental remediation problem.

2020 ◽  
Vol 16 ◽  
Author(s):  
Kannappan Panchamoorthy Gopinath ◽  
Malolan Rajagopal ◽  
Abhishek Krishnan ◽  
Shweta Kolathur Sreerama

Background: Depletion and contamination of environmental resources such as water, air and soil caused by human activities is an increasingly important challenge faced around the world. The consequences of environmental pollution are felt acutely by all living beings, both on a short and long-term basis, thereby making methods of remediation of environmental pollution an urgent requirement. Objectives: The objective of this review is to dissect the complications caused by environmental degradation, highlight advancements in the field of nanotechnology and to scrutinize its applications in environmental remediation. Furthermore, the review aims to concisely explain the merits and drawbacks of nanotechnology compared to existing methods. Conclusion: The current and potential applications of nanomaterials and nanocomposites in the prevention, control and reduction of air, water and soil pollution and the mechanisms involved have been elucidated, as have their various merits and demerits. The applications of nanotechnology in the fields of carbon capture and agriculture have also received attention in this review.


2014 ◽  
Vol 61 (2) ◽  
pp. 241-252 ◽  
Author(s):  
Rizwan Mushtaq ◽  
Zulfiqar Shah

This paper explores the dynamic liaison between US and three developing South Asian equity markets in short and long term. To gauge the long-term relationship, we applied Johansen co-integration procedure as all the representative indices are found to be non-stationary at level. The findings illustrate that the US equity market index exhibits a reasonably different movement over time in contrast to the three developing equity markets under consideration. However, the Granger-causality test divulge that the direction of causality scamper from US equity market to the three South Asian markets. It further indicates that within the three developing equity markets the direction of causality emanates from Bombay stock market to Karachi and Colombo. Overall, the results of the study suggest that the American investors can get higher returns through international diversification into developing equity markets, while the US stock market would also be a gainful upshot for South Asian investors.


2018 ◽  
Vol 21 (4) ◽  
pp. 589-615
Author(s):  
Bruno Ricardo Delalibera ◽  
João Victor Issler ◽  
Roberto Castello Branco

This paper examines the short and long-term co-movement of large  emerging market economies -- the BRICS countries -- by applying the  econometric techniques and the tests proposed in the common-feature literature. Despite their dissimilarities, given the rising trade linkages among the BRICS over the last 20 years one should expect their cycles to be  synchronized. Our empirical findings fully support this hypothesis. The evidence holds also for the co-movement between the BRICS and developed  economies, the US and the Eurozone, which may reflect the effects of  globalization.


2019 ◽  
Vol 19 (19) ◽  
pp. 12261-12293 ◽  
Author(s):  
Enrico Dammers ◽  
Chris A. McLinden ◽  
Debora Griffin ◽  
Mark W. Shephard ◽  
Shelley Van Der Graaf ◽  
...  

Abstract. Ammonia (NH3) is an essential reactive nitrogen species in the biosphere and through its use in agriculture in the form of fertilizer (important for sustaining humankind). The current emission levels, however, are up to 4 times higher than in the previous century and continue to grow with uncertain consequences to human health and the environment. While NH3 at its current levels is a hazard to environmental and human health, the atmospheric budget is still highly uncertain, which is a product of an overall lack of measurements. The capability to measure NH3 with satellites has opened up new ways to study the atmospheric NH3 budget. In this study, we present the first estimates of NH3 emissions, lifetimes and plume widths from large (>∼5 kt yr−1) agricultural and industrial point sources from Cross-track Infrared Sounder (CrIS) satellite observations across the globe with a consistent methodology. The same methodology is also applied to the Infrared Atmospheric Sounding Interferometer (IASI) (A and B) satellite observations, and we show that the satellites typically provide comparable results that are within the uncertainty of the estimates. The computed NH3 lifetime for large point sources is on average 2.35±1.16 h. For the 249 sources with emission levels detectable by the CrIS satellite, there are currently 55 locations missing (or underestimated by more than an order of magnitude) from the current Hemispheric Transport Atmospheric Pollution version 2 (HTAPv2) emission inventory and only 72 locations with emissions within a factor of 2 compared to the inventories. The CrIS emission estimates give a total of 5622 kt yr−1, for the sources analyzed in this study, which is around a factor of ∼2.5 higher than the emissions reported in HTAPv2. Furthermore, the study shows that it is possible to accurately detect short- and long-term changes in emissions, demonstrating the possibility of using satellite-observed NH3 to constrain emission inventories.


2019 ◽  
Author(s):  
Enrico Dammers ◽  
Chris A. McLinden ◽  
Debora Griffin ◽  
Mark W. Shephard ◽  
Shelley Van Der Graaf ◽  
...  

Abstract. Ammonia (NH3) is an essential reactive nitrogen species in the biosphere and through its use in agriculture in the form of fertilizer important for sustaining human kind. The current emission levels however, are up to four times higher than in the previous century and continue to grow with uncertain consequences to human health and the environment. While NH3 at its current levels is a hazard to the environmental and human health the atmospheric budget is still highly uncertain, which is a product of an overall lack of measurements. The capability to measure NH3 with satellites has opened up new ways to study the atmospheric NH3 budget. In this study we present the first estimates of NH3 emissions, lifetimes, and plume widths from large (> ~ 5 kt/yr) agricultural and industrial point sources from CrIS satellite observations across the globe with a consistent methodology. The same methodology is also applied to the IASI (A and B) satellite observations and we show that the satellites typically provide comparable results that are within the uncertainty of the estimates. The computed NH3 lifetime for large point sources is on average 2.35 ± 1.16 hours. For the 249 sources with emission levels detectable by the CrIS satellite, there are currently 55 locations missing (or underestimated by more than an order of magnitude) from the current HTAPv2 emission inventory, and only 72 locations with emissions within a factor 2 compared to the inventories. We find a total of 5622 kt/yr, for the sources analyzed in this study, which is equivalent to a factor ~ 2.5 between the CrIS estimated and HTAPv2 emissions. Furthermore, the study shows that it is possible to accurately detect short and long-term changes in emissions, demonstrating the possibility of using satellite observed NH3 to constrain emission inventories.


2018 ◽  
Vol 46 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Wayne R. Cohen ◽  
Emanuel A. Friedman

AbstractIn the 1930s, investigators in the US, Germany and Switzerland made the first attempts to quantify the course of labor in a clinically meaningful way. They emphasized the rupture of membranes as a pivotal event governing labor progress. Attention was also placed on the total number of contractions as a guide to normality. Beginning in the 1950s, Friedman determined that changes in cervical dilatation and fetal station over time were the most useful parameters for the assessment of labor progress. He showed all normal labors had similar patterns of dilatation and descent, differing only in the durations and slopes of their component parts. These observations led to the formulation of criteria that elevated the assessment of labor from a rather arbitrary exercise to one guided by scientific objectivity. Researchers worldwide confirmed the basic nature of labor curves and validated their functionality. This system allows us to quantify the effects of parity, analgesia, maternal obesity, prior cesarean, maternal age, and fetal presentation and position on labor. It permits analysis of outcomes associated with labor aberrations, quantifies the effectiveness of treatments and assesses the need for cesarean delivery. Also, dysfunctional labor patterns serve as indicators of short- and long-term risks to offspring. We still lack the necessary translational research to link the physiologic manifestations of uterine contractility with changes in dilatation and descent. Recent efforts to interpret electrohysterographic patterns hold promise in this regard, as does preliminary exploration into the molecular basis of dysfunctional labor. For now, the clinician is best served by a system of labor assessment proposed more than 60 years ago and embellished upon in considerable detail since.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hyeran Chung ◽  
Mary Arends-Kuenning

AbstractWe examine whether there is any movement in the employment of native-educated nurses due to the influx of foreign-educated nurses. To avoid conflating the short- and long-term reactions to the entry of newly arrived foreign-educated nurses, we implement a multiple instrumentation procedure. We find that there is no significant effect of foreign-educated nurses on the employment of native nurses in both the short- and the long-runs. Our results suggest that relying on foreign-educated nurses to fill gaps in the US healthcare workforce does not harm the employment of native nurses.


2006 ◽  
Vol 33 (3-4) ◽  
pp. 550-579 ◽  
Author(s):  
Re-Jin Guo ◽  
Baruch Lev ◽  
Charles Shi
Keyword(s):  
The Us ◽  

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