Analysis of Aluminum Supply and Demand Development Trend in China and the United States

2014 ◽  
Vol 962-965 ◽  
pp. 1936-1942 ◽  
Author(s):  
Xin Li ◽  
Xiang Zhang

Abstract: In this paper we use comparative method to analyze the evolution law and development trend of aluminum resources supply and demand in China and the United States, the purpose is to predict the future China aluminum supply and demand trend. This paper analyses the primary aluminum production, secondary aluminum production, import and export volume, consumption of aluminum and other data in China from 1956 to 2013, and in the United States from 1900 to 2013. The results show that: (1) the aluminum resources supply and demand trend of the United States are in line with "S" shape, while the primary aluminum development show a trend of inverted "U" curve; (2) China primary aluminum production and consumption trend both appears inverted "U" curve; (3) China begin to reduce the external dependency of secondary aluminum with its self-sufficiency ability raise; (4) China secondary aluminum production ratio will be more than primary aluminum ratio.

2021 ◽  
Vol 170 ◽  
pp. 105584
Author(s):  
Victor Brial ◽  
Hang Tran ◽  
Luca Sorelli ◽  
David Conciatori ◽  
Claudiane M. Ouellet-Plamondon

2021 ◽  
pp. 155708512199321
Author(s):  
Ting Wang

In this paper, I propose a new theory that ascribes the increasing female crime share to unequal emancipatory advancement between women’s ideological aspirations and institutional means in modern times. Accordingly, it is proposed that an incommensurate pace in progression inflicts gender-specific deprivation on women, which increases their share of crime. The theory is tested with Uniform Crime Reporting data from 1980 to 2017 across offense types. The findings indicate that mismatched liberation increases the female share of violent and property crimes, especially for adult cohorts and among samples after 1988 when women’s ends-means gap was found to be enlarged.


2016 ◽  
Vol 96 (2) ◽  
pp. E394-E395
Author(s):  
H.Y. Pan ◽  
B.G. Haffty ◽  
B. Falit ◽  
T.A. Buchholz ◽  
L.D. Wilson ◽  
...  

2021 ◽  
Vol 1040 ◽  
pp. 109-116
Author(s):  
V.Yu. Piirainen ◽  
A.A. Barinkova ◽  
V.N. Starovoytov ◽  
V.M. Barinkov

Current global environmental challenges and, above all, global warming associated with a change in the carbon balance in the atmosphere has led to the need for urgent and rapid search for ways to reduce greenhouse gas emissions into the atmosphere, which primarily include carbon dioxide as a by-product of human activity and technological progress. One of these ways is the creation of industries with a complete cycle of turnover of carbon dioxide. Aluminum is the most sought-after nonferrous metal in the world, but its production is not environmentally safe, so it constantly requires the development of knowledge-intensive technologies to improve the technological process of cleaning and disposal of production waste, primarily harmful emissions into the atmosphere. Another environmental problem related to aluminum production is the formation and accumulation in mud lagoon of huge amounts of so-called highly alkaline "red mud," which is a waste product of natural bauxite raw material processing into alumina - the feedstock for aluminum production. Commonly known resources and technological methods of neutralizing red mud and working with it as ore materials for further extraction of useful components are still not used because of their low productivity and cost-effectiveness. This article describes the negative impact of waste in the form of "red" mud and carbon dioxide of primary aluminum production on the environment. The results showed that thanks to carbonization of red mud using carbon dioxide, it is possible to achieve rapid curing and its compact formation for safer transportation and storage until further use. Strength tests of concrete samples filled with deactivated red mud were also carried out, which showed the prospects of using concrete with magnesia binder.


2015 ◽  
Vol 123 (5) ◽  
pp. 997-1012 ◽  
Author(s):  
Matthew Baird ◽  
Lindsay Daugherty ◽  
Krishna B. Kumar ◽  
Aziza Arifkhanova

Abstract Background Concerns have long existed about potential shortages in the anesthesiologist workforce. In addition, many changes have occurred in the economy, demographics, and the healthcare sector in the last few years, which may impact the workforce. The authors documented workforce trends by region of the United States and gender, trends that may have implications for the supply and demand of anesthesiologists. Methods The authors conducted a national survey of American Society of Anesthesiologists members (accounting for >80% of all practicing anesthesiologists in the United States) in 2007 and repeated it in 2013. The authors used logistic regression analysis and Seemingly Unrelated Regression to test across several indicators under an overarching hypothesis. Results Anesthesiologists in Western states had markedly different patterns of practice relative to anesthesiologists in other regions in 2007 and 2013, including differences in employer type, the composition of anesthesia teams, and the time spent on monitored anesthesia care. The number and proportion of female anesthesiologists in the workforce increased between 2007 and 2013, and females differed from males in employment arrangements, compensation, and work hours. Conclusions Regional differences remained stable during this time period although the reasons for these differences are speculative. Similarly, how and whether the gender difference in work hours and shift to younger anesthesiologists during this period will impact workforce needs is uncertain.


2021 ◽  
Vol 73 (06) ◽  
pp. 10-11
Author(s):  
Dwayne Purvis

As the world reaches a tipping point in its will to address climate change, the industry must find a new way forward, especially in the United States. Many are right to say that oil and gas are not going away; the transition is planned to take 30 years or more and will not decline to zero production. This fact, though, obscures the reality that peaking, then declining, demand for oil—gas is another story—will structurally change and globally redistribute the industry’s exploration and employment. The story of oil supply and demand began its race to the top 150 years ago. “Shortage” and “glut” have meant that paired growth got out of sync, not that there was a real loss of production. For many decades the world has needed about 1 million B/D more each year than the previous year, but on a percentage basis growth has slowed. At the same time supply from previous years declines about 5 to 6% per year, arguably higher in recent years. The treadmill for new supply has been running hot for decades. All major public forecasts in the past year call for oil demand to plateau between now and about 2030 when accounting for ongoing changes to policy. (To be clear, some show a peak in the 2030s in “business as usual” cases, but they also show even sooner peaks if policy and demand changes accelerate). BP’s Energy Outlook 2020 from last fall took the bold—and well-argued—position that peak oil demand is today and that it is only a question of how fast demand declines. “Peak” demand isn’t really a peak like the Matterhorn; it is flatter like a weathered jebel. We know this from the example of the peak oil demand experienced by the developed world. We also know from that experience that forecasting agencies failed to predict the peak OECD oil demand in 2005 literally by decades even as demand turned down. Reversal of demand growth presents a figurative and mathematical inflection point. Though existing production continues, growth becomes negative, and the pace of the new-supply treadmill plummets. When the need for new supply approximately halves, the Pareto principle tells us that the number of new projects required will fall more than half. Thus, the need for those industry professionals preferentially tasked with finding new oil supply—geophysicists, exploration geologists, drillers, reservoir engineers, landmen—may fall quickly. Other disciplines like operations that service existing production will face only the headwinds of cost reductions and then the long, slow slide toward mid-century targets. The United States via its swarm of large and small companies has dominated the global supply story for more than a decade with its unique shale revolution, but it had previously shriveled to a second-tier producer. Fig. 1 shows 55 years of oil production history. Fig. 1a shows the US supply deconstructed to its functional parts while Fig. 1b shows ascendent producers on the same scales.


Author(s):  
Rachel K. Gibson

This chapter examines developments in digital campaigning in the United States during the period 1994–2012. It does so by reviewing the findings from the secondary literature, and conducting original analysis of web content and national survey data. These data sources build a picture of key changes in the supply and demand for digital campaigning in the United States and particularly whether they fit the four-phase model of development. The results show that the model fits, and that US parties and voters were considerably faster in engaging with web campaigning than was the case elsewhere. This enthusiasm appeared to be driven, to an extent, by the more conducive regulatory environment and also innovation among left-wing organizations and particularly the Democrats from the middle of the first decade of the 2000s. Their ability to sustain activist involvement in their online cause beyond 2008, however, is challenged by the author’s findings.


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