scholarly journals Rice life cycle-based global mercury biotransport and human methylmercury exposure

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Maodian Liu ◽  
Qianru Zhang ◽  
Menghan Cheng ◽  
Yipeng He ◽  
Long Chen ◽  
...  

AbstractProtecting the environment and enhancing food security are among the world’s greatest challenges. Fish consumption is widely considered to be the single significant dietary source of methylmercury. Nevertheless, by synthesizing data from the past six decades and using a variety of models, we find that rice could be a significant global dietary source of human methylmercury exposure, especially in South and Southeast Asia. In 2013, globalization caused 9.9% of human methylmercury exposure via the international rice trade and significantly aggravated rice-derived exposure in Africa (62%), Central Asia (98%) and Europe (42%). In 2016, 180 metric tons of mercury were generated in rice plants, 14-fold greater than that exported from oceans via global fisheries. We suggest that future research should consider both the joint ingestion of rice with fish and the food trade in methylmercury exposure assessments, and anthropogenic biovectors such as crops should be considered in the global mercury cycle.

Author(s):  
G. Sultanova ◽  
Kh. Karimova

Central Asia experienced major socio-economic shocks during the 1990s, which has increased food insecurity, malnutrition, and poverty. In response, Central Asia has adopted food self-sufficiency policies. This paper argues that regional and international trade can improve food security if implemented properly. However, a new constraint on food trade has arisen — food safety. Using food commodity data and analysis from Trade Map, this paper analyzes Central Asia’s intra-region food security policies. Evidence shows that food safety practices will affect internal food trade in Central Asia. Finally, a framework for creating a single food market is proposed.


2021 ◽  
Vol 13 (9) ◽  
pp. 4792
Author(s):  
Hosang Jung ◽  
Boram Kim

Asset management is not new, and research has been conducted in private and public sectors on how to systematically maintain infrastructure or facilities for sustainable use and achieve the level of service desired by users or customers at the lowest life cycle costs. This research identifies the research topics and trends in asset management over the past 30 years. To this end, latent Dirichlet allocation, a topic modeling approach, was applied to articles published in engineering journals and investigated the following three research questions: (1) what have the key topics been for the past three decades? (2) what are the main activities and target sectors of asset management? (3) how have the research topics and keywords changed over the past three decades? The analysis shows that the target field of asset management has broadened while the main activities of asset management have been limited to several popular activities such as life cycle cost analysis and reliability analysis. Some implications and future research directions are also discussed.


2020 ◽  
pp. 104225872097838
Author(s):  
Holger Patzelt ◽  
Rebecca Preller ◽  
Nicola Breugst

While research on entrepreneurial teams has flourished over the past two decades, it has mainly taken a static perspective, neglecting the developments both teams and their ventures undergo over time. To address this issue, we develop a “double life cycle framework” covering entrepreneurial teams’ formation, collaboration, and dissolution phases as well as potential nonlinear sequences of these phases. While this team life cycle is embedded in the venture life cycle, both life cycles can progress independently. We offer research suggestions on entrepreneurial team formation, collaboration, and dissolution in each venture phase, highlighting the role of entrepreneurial teams in advancing their ventures.


1957 ◽  
Vol 10 (1) ◽  
pp. 91-101 ◽  
Author(s):  
Charles Wolf

THE new Soviet diplomacy in Asia involves an active effort to extend economic aid to a select group of countries who qualify as non-allied with the United States, or, in some sense of the term, as “neutralists.” To date, the Soviet Bloc has made aid commitments in South and Southeast Asia of over $500 million to India, Afghanistan, Indonesia, Cambodia, and Burma. Virtually all the aid has been committed in the past two years; most of it since early 1956. TABLE 1 shows the size and character of the commitments.


Antiquity ◽  
2014 ◽  
Vol 88 (342) ◽  
pp. 1229-1243 ◽  
Author(s):  
Xiong Zhaoming

The extensive cemetery at Hepu in southern China represents one of the best-preserved tomb complexes of the Han period. It contains many elaborate tombs with exotic luxury materials that testify to the status of Hepu as the home port of the maritime Silk Road. This trading network carried Chinese products (notably silks) by sea to kingdoms and communities of South and Southeast Asia, and was the southern counterpart to the more famous overland Silk Road through Central Asia. The materials found in the Hepu tombs demonstrate the range and geography of contacts, including semi-precious beads from India and ceramics from the Parthian empire. This far-flung trade network had major impacts both on southern China and on the other regions that it connected.


2019 ◽  
Vol 100 (6) ◽  
pp. ES171-ES174
Author(s):  
Faisal M. Qamer ◽  
Tsegaye Tadesse ◽  
Mir Matin ◽  
Walter L. Ellenburg ◽  
Benjamin Zaitchik

2012 ◽  
Vol 09 (01) ◽  
pp. 1250001 ◽  
Author(s):  
JOHN P. DISMUKES ◽  
JOHN A. BERS ◽  
JAI A. SEKHAR

In-depth historical assessment of innovation over the past several hundred years shows that the incremental innovation and cost reduction emphasized in the late 20th century will prove inadequate and even counterproductive in the 21st century for achieving sustained, global competitive advantage requiring radical innovation. Accordingly, a comprehensive, holistic innovation life cycle model is needed. Ongoing research since the PICMET'07 Conference has confirmed this need for a viable model, and developed an Accelerated Radical Innovation (ARI) methodology as part of the life cycle framework for a viable model. A significant contribution of the ARI methodology has been to develop improved techniques for measuring and guiding innovation progress, based on focused assessment of 10 innovation attributes at each of the 10 ARI steps in the first two phases of a six-phase life cycle envisioned to describe any radical innovation life cycle. This paper first summarizes systematically the most prominent radical innovation approaches, including quantitative assessment of the dynamics of four major radical innovations over the past 100 years by retrospective application of the ARI theory and its associated four types of challenges and hurdles inherent in commercializing breakthrough innovations. It then proposes future research on a six-period innovation life cycle model as the basis for analysis of breakthrough innovations of all types.


2018 ◽  
Vol 120 ◽  
pp. 333-344 ◽  
Author(s):  
Maodian Liu ◽  
Long Chen ◽  
Yipeng He ◽  
Zofia Baumann ◽  
Robert P. Mason ◽  
...  

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