scholarly journals Using fallout radionuclides to investigate recent overbank sedimentation rates on river floodplains: an overview

2015 ◽  
Vol 367 ◽  
pp. 228-234
Author(s):  
V. Golosov ◽  
D. E. Walling
Keyword(s):  
Effective Means ◽  
Sedimentation Rates ◽  
Medium Term ◽  
River Floodplains ◽  
Fallout Radionuclides ◽  
The World ◽  
Key Issues ◽  
Overbank Sedimentation ◽  
Potential Use ◽  
Floodplain Sedimentation

Abstract. Information on rates of overbank sedimentation on river floodplains is needed for a variety of purposes. Use of 137Cs and 210Pbex measurements provides an effective means of estimating medium-term floodplain sedimentation rates and that approach has now been successfully used in many areas of the world. This contribution reviews the use of 137Cs and 210Pbex measurements in floodplain sedimentation investigations and discusses some of the important sampling requirements and key issues associated with interpreting the measurements, and subsequently deriving reliable estimates of sedimentation rates. The potential use of other radionuclides, including 241Am, 238,239+240Pu, and 7Be is considered, and the advantages of using two or more radionuclides, in combination, is highlighted.

Morphological controls on medium-term sedimentation rates on British lowland river floodplains

Hydrobiologia ◽  
2003 ◽  
Vol 494 (1-3) ◽  
pp. 177-183 ◽  
Author(s):  
R. J. Sweet ◽  
A. P. Nicholas ◽  
D. E. Walling ◽  
X. Fang
Keyword(s):  
Sedimentation Rates ◽  
Lowland River ◽  
Medium Term ◽  
River Floodplains

China und Lateinamerika

2006 ◽  
Vol 36 (142) ◽  
pp. 113-126
Author(s):  
Enrique Dussel Peters
Keyword(s):  
Latin America ◽  
World Market ◽  
Global Integration ◽  
Integration Process ◽  
Medium Term ◽  
The World ◽  
New Challenges

China's socioeconomic accumulation in the last 30 years has been probably one of the most outstanding global developments and has resulted in massive new challenges for core and periphery countries. The article examines how China's rapid and massive integration to the world market has posed new challenges for countries such as Mexico - and most of Latin America - as a result of China's successful exportoriented industrialization. China's accumulation and global integration process does, however, not only question and challenges the export-possibilities in the periphery, but also the global inability to provide energy in the medium term.

scholarly journals Hydrogeological and Geochemical Characteristics of the Coastal Aquifer of Stromboli Volcanic Island (Italy)

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 417
Author(s):  
Paolo Madonia ◽  
Gloria Campilongo ◽  
Marianna Cangemi ◽  
Maria Luisa Carapezza ◽  
Salvatore Inguaggiato ◽  
...  
Keyword(s):  
Water Supply ◽  
Coastal Aquifer ◽  
Volcano Monitoring ◽  
Conductivity Measurements ◽  
Thin Lens ◽  
Supply Source ◽  
The World ◽  
Volcanic Islands ◽  
Monitoring Protocols ◽  
Potential Use

Although groundwater is a strategic source in volcanic islands, most hydrogeochemical research on this topic has been focused on volcanic activity monitoring, overlooking general hydrogeological aspects. The same applies to one of the most studied volcanoes in the world, Stromboli Island (Italy). Here, we provide a hydrogeological scheme of its coastal aquifer, retrieving inferences about its potential use as a water supply source and for optimizing monitoring protocols for volcanic surveillance. Starting from the hydrogeochemical literature background, we analyzed new data, acquired both for volcano monitoring purposes and during specific surveys. Among these, there were saturated hydraulic conductivity measurements of selected rock samples and precise determinations of water table elevations based on GNSS surveys of wells. We identified a ubiquitous thin lens of brackish water floating on seawater and composed of a variable mixing of marine and meteoric components; inlets of hydrothermal fluids to the aquifer are basically gases, mainly CO2. Based on its hydrogeochemical character, the coastal aquifer of Stromboli could be used as a water supply source after desalinization by reverse osmosis, while the wells located far from the seashore are the most interesting for volcano monitoring, because they are less disturbed by the shallow geochemical noise.

scholarly journals Looking into the future ten years later: big full containerships and their arrival to south American ports

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Ricardo J. Sánchez ◽  
Daniel E. Perrotti ◽  
Alejandra Gomez Paz Fort
Keyword(s):  
Economies Of Scale ◽  
South American ◽  
Medium Term ◽  
Trade Routes ◽  
Factors Associated ◽  
Cascading Effect ◽  
Dependent Variables ◽  
The World ◽  
Nominal Capacity ◽  
Global Increase

AbstractSince 2006, when the Emma Maersk broke into the world of shipping, the growth in containership size has remained a continuous trend.For the last 14 years, since 2006, the enlargement of fullcontainerships size has remained a continuous trend since Emma Maersk broke into the world of shipping. This process - that also affected north-south trades - has crucial implications in the shipping business, particularly in the planning of ports and its services and related activities. This paper analyses the global increase in vessel size and forecasts larger vessels’ arrival to South American coasts. The paper analyses evidence since 2006 to understand the factors behind the trend for bigger ships (fleets between 18,000 and 24,000 TEU) and introduce a validated methodology for the prediction of the size of container ships. Experts presented a consensus vision in which factors associated with infrastructure, economics, technology, and the environment play a crucial role in driving the trend. Next, the paper presents a methodology for forecasting the size of containerships and applies it to Latin America’s trade. The models include two alternative thresholds for the dependent variables (1310 ft LOA and 18,000 TEU of nominal capacity) that are controlled by cascading effect (i.e., the size gap between Latin America and the world’s main trade routes), and the economic activity at the destination countries (represented by port activity). Finally, the conclusions highlight the forecast’s call to take action on infrastructure planning and investments, analyzing issues such as “economies of scale,” concentration, or entry barriers. Overall, the paper warns about the importance of efficient medium-term planning in the port industry to maximize its economic impact.

Guaranteed Sweet or Guaranteed Non–Sweet – Fruit and the Future of Hortical Pty Ltd

2003 ◽  
Vol 9 (2) ◽  
pp. 8-16
Author(s):  
John Jackson
Keyword(s):  
Business Models ◽  
Nir Spectroscopy ◽  
New Product ◽  
New Venture ◽  
Product Service ◽  
First Mover Advantage ◽  
The World ◽  
Infra Red ◽  
Key Issues ◽  
Viable Business

ABSTRACTWe pick up the case as the new venture moves from a decade of dedicated scientific research into the early stages of becoming a commercially viable business. The case considers the potential of the Near Infra Red (NIR) spectroscopy technology to revolutionise the fruit markets of the world as well as the realities of trying to change existing practices and culture. The dilemma of first-mover advantage as compared to learning from the mistakes of early competitors is included. Various possible business models are introduced. The case also asks the students to consider some of the key issues of a new product/service launch.

Understanding ‘Source’ and ‘Purpose’ in Processes of Democratic Change: Insights from the Philippines and Thailand

2013 ◽  
Vol 1 (2) ◽  
pp. 145-175 ◽  
Author(s):  
Paul D. Hutchcroft
Keyword(s):  
Effective Means ◽  
Historical Analysis ◽  
The Philippines ◽  
Complex Nature ◽  
Social Forces ◽  
Democratic Change ◽  
The World ◽  
Challenges And Opportunities ◽  
Institutional Contexts ◽  
Formal Establishment

AbstractPrevious decades' celebrations of the triumph of democracy were frequently based on mainstream analyses that displayed two major theoretical problems. First, conceptualisations of democracy based on ‘minimal pre-conditions’ commonly conflated the formal establishment ofdemocratic structureswith the far more complex and historically challenging creation ofsubstantive democracy. Second, a deductive and generally ahistorical model asserting fixed stages of ‘democratic transition’ diverted attention from deeper and more substantive examination ofstruggles for power among social forces within specific historical contexts. By adhering to minimalist conceptions of democracy and simplistic models of democratic change, mainstream analysts quite often chose to overlook many underlying limitations and shortcomings of the democratic structures they were so keen to celebrate. Given more recent concerns over ‘authoritarian undertow’, those with the normative goal of deepening democracy must begin by deepening scholarly conceptualisations of the complex nature of democratic change. This analysis urges attention to the ‘source’ and ‘purpose’ of democracy. What were the goals of those who established democratic structures, and to what extent did these goals correspond to the ideals of democracy? In many cases throughout the world, ‘democracy’ has been used as a convenient and very effective means for both cloaking and legitimising a broad set of political, social, and economic inequalities. The need for deeper analysis is highlighted through attention to the historical character of democratic structures in the Philippines and Thailand, with particular attention to the sources and purposes of ‘democracy’ amid on-going struggles for power among social forces. In both countries, albeit coming forth from very different historical circumstances, democratic structures have been continually undermined by those with little commitment to the democratic ideal: oligarchic dominance in the Philippines, and military/bureaucratic/monarchic dominance in Thailand. Each country possesses its own set of challenges and opportunities for genuine democratic change, as those who seek to undermine elite hegemony and promote popular accountability operate in very different socio-economic and institutional contexts. Efforts to promote substantive democracy in each setting, therefore, must begin with careful historical analysis of the particular challenges that need to be addressed.

The Paradoxes of the Sustainability Thesis

2011 ◽  
pp. 93-99
Author(s):  
Ranabir Samaddar
Keyword(s):  
Sustainable Development ◽  
Technical Analysis ◽  
Fundamental Question ◽  
The World ◽  
Key Issues ◽  
Comprehensive Framework

The author's reflections on the concept of sustainability move within a historicalsociological frame, and it is in this context that the author arises a fundamental question: is the world able to sustain other wars and mass destructions or, instead, it is necessary to listen to a new need the path of sustainable development. The work gives a unique perspective on the birth and evolution of the concept of sustainability, as it does not focus on data and technical analysis, but places this issue in a comprehensive framework, illustrating a number of ties between the need for a path of sustainability and global key issues, and providing important secondary issues.

scholarly journals Local and National Belonging in A Globalised World

2011 ◽  
Vol 19 (2) ◽  
pp. 127-143 ◽  
Author(s):  
Tom Inglis ◽  
Susie Donnelly
Keyword(s):  
Mixed Method ◽  
National Identities ◽  
Global Flow ◽  
National Belonging ◽  
Social Survey ◽  
Rural And Urban ◽  
The World ◽  
Key Issues ◽  
Method Approach ◽  
International Social

The question of place is becoming more important in an increasingly globalised, cosmopolitan world. Has the global flow of culture and the movement of people around the world meant a decline in the importance of place as a form of identity? Have local, regional and national identities lost their significance for people? The article begins to explore these key issues. In particular it looks at Ireland which, from the 1990s, moved from being relatively insular and homogeneous to becoming one of the most globalised societies. The authors use a mixed method approach. First they examine data from the International Social Survey Project (ISSP) to see if there is any evidence of a decline in identity with place, how this varies between rural and urban dwellers, and levels of age and education. They then use findings from a qualitative study to examine the complex ways in which people talk about and identify with place, where they were brought up, where they live now and being Irish. The findings show that level of identity with place is still strong in Ireland and in some cases is increasing. The authors argue that increased identification with the local is an equal and opposite reaction to globalisation.

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