‘Extreme Mass Spectrometry’: the role of mass spectrometry in the study of the Antarctic Environment

2014 ◽  
Vol 49 (11) ◽  
pp. 1071-1085 ◽  
Author(s):  
Emanuele Magi ◽  
Shivani Tanwar
Keyword(s):  
Mass Spectrometry ◽  
The Antarctic ◽  
Antarctic Environment

scholarly journals Providing expert scientific advice on the Antarctic environment

1994 ◽  
Vol 6 (1) ◽  
pp. 1-1 ◽  
Author(s):  
D.W.H. Walton
Keyword(s):  
Decision Making ◽  
Human Activities ◽  
Scientific Advice ◽  
Politics And Science ◽  
The World ◽  
Antarctic Treaty ◽  
The Antarctic ◽  
The Relationship ◽  
Antarctic Environment

It is hard to divorce most human activities, including science, completely from politics. Politics is about perceived certainty whilst science is about doubt – they make strange bedfellows. Politicians detest probabilities whilst scientists abhor the absolute. Nowhere is the relationship between politics and science more publicly developed than in the Antarctic Treaty System. In the only continent devoted to peace and science it might be supposed that, after more than thirty years, the role of science would be both more robust and more pivotal in decision-making than elsewhere in the world. So it appears at present but will it remain so?

Sonic Explorations of the Southernmost Continent: Four composers’ responses to Antarctica and climate change in the twenty-first century

2016 ◽  
Vol 21 (1) ◽  
pp. 83-93 ◽  
Author(s):  
Carolyn Philpott
Keyword(s):  
Climate Change ◽  
First Century ◽  
Creative Work ◽  
Sound Recording ◽  
Natural Landscape ◽  
Field Recordings ◽  
Late Nineteenth ◽  
The Antarctic ◽  
Antarctic Environment

Composers have been drawn to the world’s southernmost continent, Antarctica, for creative inspiration since the so-called ‘Heroic Age of Antarctic Exploration’ in the late nineteenth and early twentieth centuries. However, it has only been since the final few years of the twentieth century that professional composers have had opportunities to travel to the far south as part of arts residency programmes to experience its environment – and its unique soundscapes – first-hand. Most composers who have visited Antarctica to date have utilised sound recording technologies to document their journeys sonically and have subsequently created compositions that feature their soundscape recordings. Typically, such compositions include biological sounds, such as vocalisations of penguins and seals (both on the ice and underwater); non-biological or ‘geophysical’ ambient sounds that emanate from the natural landscape, such as those created by wind, blizzards, and ice cracking and calving; and/or anthropogenic (human) sounds recorded within the Antarctic environment.This article examines a series of recent compositions by four established composers who have visited Antarctica and used their experiences and field recordings to inform their creative work: Douglas Quin, Jay Needham, Lawrence English and Philip Samartzis. The primary aim of this research is to investigate what these composers’ Antarctica-related works reveal about their individual encounters with and perceptions of the frozen continent, as well as to consider the role of such compositions in conveying messages related to climate change to listeners around the globe – the vast majority of whom are unlikely to ever see or hear the place in person.

The Antarctic Committee for Environmental Protection: past, present, and future

Polar Record ◽  
2007 ◽  
Vol 43 (3) ◽  
pp. 239-246 ◽  
Author(s):  
Rodolfo Andrés Sánchez ◽  
Ewan McIvor
Keyword(s):  
Environmental Protection ◽  
Detailed Analysis ◽  
Environmental Issues ◽  
Future Scenarios ◽  
New Era ◽  
Challenges And Opportunities ◽  
Antarctic Treaty ◽  
The Antarctic ◽  
Antarctic Environment

ABSTRACTThe Committee for Environmental Protection (CEP) was established under the Protocol on Environmental Protection to the Antarctic Treaty to advise the Antarctic Treaty Consultative Meeting (ATCM) on matters relating to protection of the Antarctic environment. After almost a decade of work, the committee has consolidated itself as a highly relevant and important component of the Antarctic Treaty system. Through a detailed analysis of meeting reports, as well as first-hand information and experience, this study describes the activities of the CEP during its first nine years of operation, provides likely explanations for some trends observed and proposes future scenarios by highlighting major challenges and opportunities. In particular, the instigation of strategic planning shows potential for launching a new era of CEP activities focused on the environmental issues requiring the greatest attention. This overview will assist readers to understand the role of the CEP as the main environmental advisor to the ATCM, and the reasons for the Antarctic Treaty parties to support the Committee's work to foster a spirit of cooperation as a prerequisite for continuing protection of the Antarctic environment.

scholarly journals Placental 13C-DHA metabolism and relationship with maternal BMI, glycemia and birthweight

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Oliver C. Watkins ◽  
Preben Selvam ◽  
Reshma Appukuttan Pillai ◽  
Victoria K. B. Cracknell-Hazra ◽  
Hannah E. J. Yong ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Lipid Metabolism ◽  
Metabolic Pathways ◽  
Liquid Chromatography Mass Spectrometry ◽  
Fasting Glycemia ◽  
Glucose Treatment ◽  
Maternal Bmi

Abstract Background Fetal docosahexaenoic acid (DHA) supply relies on preferential transplacental transfer, which is regulated by placental DHA lipid metabolism. Maternal hyperglycemia and obesity associate with higher birthweight and fetal DHA insufficiency but the role of placental DHA metabolism is unclear. Methods Explants from 17 term placenta were incubated with 13C-labeled DHA for 48 h, at 5 or 10 mmol/L glucose treatment, and the production of 17 individual newly synthesized 13C-DHA labeled lipids quantified by liquid chromatography mass spectrometry. Results Maternal BMI positively associated with 13C-DHA-labeled diacylglycerols, triacylglycerols, lysophospholipids, phosphatidylcholine and phosphatidylethanolamine plasmalogens, while maternal fasting glycemia positively associated with five 13C-DHA triacylglycerols. In turn, 13C-DHA-labeled phospholipids and triacylglycerols positively associated with birthweight centile. In-vitro glucose treatment increased most 13C-DHA-lipids, but decreased 13C-DHA phosphatidylethanolamine plasmalogens. However, with increasing maternal BMI, the magnitude of the glucose treatment induced increase in 13C-DHA phosphatidylcholine and 13C-DHA lysophospholipids was curtailed, with further decline in 13C-DHA phosphatidylethanolamine plasmalogens. Conversely, with increasing birthweight centile glucose treatment induced increases in 13C-DHA triacylglycerols were exaggerated, while glucose treatment induced decreases in 13C-DHA phosphatidylethanolamine plasmalogens were diminished. Conclusions Maternal BMI and glycemia increased the production of different placental DHA lipids implying impact on different metabolic pathways. Glucose-induced elevation in placental DHA metabolism is moderated with higher maternal BMI. In turn, findings of associations between many DHA lipids with birthweight suggest that BMI and glycemia promote fetal growth partly through changes in placental DHA metabolism.

An international hierarchy of science: conquest, cooperation, and the 1959 Antarctic Treaty System

2021 ◽  
pp. 135406612110338
Author(s):  
Joanne Yao
Keyword(s):  
International Relations ◽  
20Th Century ◽  
International Institutions ◽  
Social Performance ◽  
Early 20Th Century ◽  
Antarctic Treaty ◽  
The Antarctic ◽  
International Status ◽  
Antarctic Treaty System

The Antarctic Treaty System (ATS), created in 1959 to govern the southern continent, is often lauded as an illustration of science’s potential to inspire peaceful and rational International Relations. This article critically examines this optimistic view of science’s role in international politics by focusing on how science as a global hierarchical structure operated as a gatekeeper to an exclusive Antarctic club. I argue that in the early 20th century, the conduct of science in Antarctica was entwined with global and imperial hierarchies. As what Mattern and Zarakol call a broad hierarchy, science worked both as a civilized marker of international status as well as a social performance that legitimated actors’ imperial interests in Antarctica. The 1959 ATS relied on science as an existing broad hierarchy to enable competing states to achieve a functional bargain and ‘freeze’ sovereignty claims, whilst at the same time institutionalizing and reinforcing the legitimacy of science in maintaining international inequalities. In making this argument, I stress the role of formal international institutions in bridging our analysis of broad and functional hierarchies while also highlighting the importance of scientific hierarchies in constituting the current international order.

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