In new technique, scientists calculate radiation dose in bone from victim of Hiroshima bombing
Scientists calculate radiation dose in bone from victim of Hiroshima bombing https://www.eurekalert.org/pub_releases/2018-04/fda-scr042718.php
In an article published in PLOS ONE, Brazilian researchers describe the first retrospective dosimetric study by electron spin resonance spectroscopy using human tissue from nuclear attack victimsFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO
The bombing of the Japanese cities Hiroshima and Nagasaki by the United States in 1945 was the first and only use of nuclear weapons against civilian targets. A series of studies began in its aftermath to measure the impact of the fallout, in terms of both the radiation dose to which the victims were exposed and the effects of this exposure on DNA and health in general.
Continuing research that started in the 1980s under the leadership of physicist Sérgio Mascarenhas, Full Professor at the University of São Paulo (USP), Brazilian scientists have published an article in the journal PLOS ONE describing a method of precise measurement of the radiation dose absorbed by the bones of victims of the nuclear bombs dropped on Japan.
The investigation was conducted during the postdoctoral research of Angela Kinoshita, currently a professor at Universidade do Sagrado Coração in Bauru, São Paulo State. Her supervisor was then Oswaldo Baffa, Full Professor at the University of São Paulo’s Ribeirão Preto School of Philosophy, Science & Letters (FFCLRP-USP).
“We used a technique known as electron spin resonance spectroscopy to perform retrospective dosimetry. Currently, there’s renewed interest in this kind of methodology due to the risk of terrorist attacks in countries like the United States,” Baffa said.
“Imagine someone in New York planting an ordinary bomb with a small amount of radioactive material stuck to the explosive. Techniques like this can help identify who has been exposed to radioactive fallout and needs treatment.”
As Kinoshita explained, the study is unique insofar as it used samples of human tissue from victims of the bomb dropped on Hiroshima.
“There were serious doubts about the feasibility of using this methodology to determine the radiation dose deposited in these samples, because of the processes involved in the episode,” she said. “The results confirm its feasibility and open up various possibilities for future research that may clarify details of the nuclear attack.”
The equipment used in the investigation was purchased during a project coordinated by Baffa and supported by the São Paulo Research Foundation – FAPESP.
Origins
In the 1970s, when he was teaching at the University of São Paulo’s São Carlos Physics Institute (IFSC-USP), Mascarenhas discovered that X-ray and gamma-ray irradiation made human bones weakly magnetic. The phenomenon, known as paramagnetism, occurs because the hydroxyapatite (crystalline calcium phosphate) in the mineral portion of bone tissue absorbs carbon dioxide ions, and when the sample is irradiated, the CO2 loses electrons and becomes CO2-. This free radical serves as a marker of the radiation dose received by the material.
“I discovered that we could use this property to perform radiation dosimetry and began using the method in archeological dating,” Mascarenhas recalled.
His aim at the time was to calculate the age of bones found in sambaquis (middens created by Brazil’s original inhabitants as mounds of shellfish debris, skeletons of prehistoric animals, human bones, stone or bone utensils, and other refuse) based on the natural radiation absorbed over centuries via contact with elements such as thorium that are present in the sand on the seashore.
On the strength of this research, he was invited to teach at Harvard University in the United States. Before leaving for the US, however, he decided to go to Japan to try to obtain samples of bones from victims of the nuclear bombs and test his method on them.
“They gave me a jawbone, and I decided to measure the radiation right there, at Hiroshima University,” he said. “I needed to prove experimentally that my discovery was genuine.”
Mascarenhas succeeded in demonstrating that a dosimetric signal could be obtained from the sample even though the technology was still rudimentary and there were no computers to help process the results. The research was presented at the American Physical Society’s annual March Meeting, where it made a strong impression. Mascarenhas brought the samples to Brazil, where they remain.
“There have been major improvements in the instrumentation to make it more sensitive in the last 40 years,” Baffa said. “Now, you see digitally processed data in tables and graphs on the computer screen. Basic physics has also evolved to the extent that you can simulate and manipulate the signal from the sample using computational techniques.”
Thanks to these advances, he added, in the new study, it was possible to separate the signal corresponding to the radiation dose absorbed during the nuclear attack from the so-called background signal, a kind of noise scientists suspect may have resulted from superheating of the material during the explosion.
“The background signal is a broad line that may be produced by various different things and lacks a specific signature,” Baffa said. “The dosimetric signal is spectral. Each free radical resonates at a certain point on the spectrum when exposed to a magnetic field.”
Methodology
To make the measurements, the researchers removed millimeter-scale pieces of the jawbone used in the previous study. The samples were again irradiated in the laboratory using a technique called the additive dose method.
“We added radiation to the material and measured the rise in the dosimetric signal,” Baffa explained. “We then constructed a curve and extrapolated from that the initial dose, when the signal was presumably zero. This calibration method enabled us to measure different samples, as each bone and each part of the same bone has a different sensitivity to radiation, depending on its composition.”
Thanks to this combination of techniques, they were able to measure a dose of approximately 9.46 grays (Gy), which is high in Baffa’s view. “About half that dose, or 5 Gy, is fatal if the entire body is exposed to it,” he said.
The value was comparable with the doses obtained by other techniques applied to non-biological samples, such as measurement of the luminescence of quartz grains present in brick and roof tile fragments found at the bomb sites. According to the authors, it was also close to the results of biological measurement techniques applied in long-term studies using alterations in survivors’ DNA as a parameter.
“The measurement we obtained in this latest study is more reliable and up to date than the preliminary finding, but I’m currently evaluating a methodology that’s about a thousand times more sensitive than spin resonance. We’ll have news in a few months,” Mascarenhas predicted.
About São Paulo Research Foundation (FAPESP)
The São Paulo Research Foundation (FAPESP) is a public institution with the mission of supporting scientific research in all fields of knowledge by awarding scholarships, fellowships and grants to investigators linked with higher education and research institutions in the State of São Paulo, Brazil. FAPESP is aware that the very best research can only be done by working with the best researchers internationally. Therefore, it has established partnerships with funding agencies, higher education, private companies, and research organizations in other countries known for the quality of their research and has been encouraging scientists funded by its grants to further develop their international collaboration. For more information: http://www.fapesp.br/en.
Vulnerable to Climate Change – Manaus, Brazil
From heatwaves to hurricanes, floods to famine: seven climate change hotspots Global warming will not affect everyone equally. Here we look at seven key regions to see how each is tackling the consequences of climate change, Guardian, John Vidal, 23 June 17
“…. Manaus, Brazil
When Carlos Nobre, one of Brazil’s leading climatologists, lived in Manaus in the 1970s, the population was a few hundred thousand and the highest temperature ever recorded in the city had been 33.5C. The city was surrounded by cool, dense forest and the greatest river on Earth. Heat waves were rare and floods regular but manageable.
Today Manaus has more than 2 million people, and it and the wider Amazon region are changing fast. In 2015, Nobre says, the temperature in Manaus soared to 38.8C. “The Amazon is tropical and very hot, but when I lived there the hot spells were rare,” he says. “Now we see many more of them.” Not only that, he says, but dry seasons are longer by a week than they were a decade ago and weather is more erratic.
Nobre notes that tree loss is exacerbating the effects of climate change. “In many parts of continental South America one sees about 1C warming in the Amazon, which can [be] mostly attributed to global warming. In areas like Rondônia, where there has been widespread deforestation, we see an additional 1C warming due to replacement of forest – which is a high-evaporating vegetation – to pasture, which is less evaporating.”
Hot spells in such a humid climate are a real hazard to health. Yet adaptation to climate change in a teeming, poor city like Manaus is non-existent for the many people who must struggle just to survive. For the middle classes, air conditioning is now essential. The most city authorities can do is plant trees to cool the streets and protect the river banks from flooding.
The great uncertainty is how far the drying of the Amazon could affect the rest of the world. “If you change the rainfall in the Amazon, you could transport the impacts very far away,” Nobre says. “According to my calculations, there will be a lot of impacts in southeastern Brazil and also over equatorial Africa and the US. But we cannot pinpoint what will happen.”
Perhaps most ominous is the fact that a positive feedback loop appears to be in play. As the Amazon dries, Nobre says, tropical forest will gradually shift to savanna, releasing carbon dioxide into the atmosphere and further adding to global warming.
“When we see a dry season of over four months, or deforestation of more than 40%, then there is no way back. Trees will slowly decay, and in 50 years we would see a degraded savanna. It would take 100–200 years to see a fully fledged savanna.”
The Amazon then would be unrecognizable, along with much of Earth. …https://www.theguardian.com/environment/2017/jun/23/from-heatwaves-to-hurricanes-floods-to-famine-seven-climate-change-hotspots?CMP=share_btn_tw
Brazil’s increase in fires in Amazon region – alarming news
The alarming number of fires in the Brazilian Amazon, Mongabay, 8 September 2016 / Commentary by Natália Girão Rodrigues de Mello
For three months, from September to December 2015, Manaus was engulfed in smoke, resembling Beijing. That was an unusual scene, and an undeniable sign that predatory exploration in the Brazilian Amazon has not yet been properly tackled.
- The sharp decrease in the annual rates of forest loss in the Brazilian Amazon is celebrated worldwide. The trend started in 2005 after a peak in deforestation the year before.
- However, the figures are not so bright when it comes to forest fires, and few people are talking about that.
- The number of fires in the Brazilian Amazon is alarming, and that was especially true in 2015, when a sharp increase in forest fires occurred………
- Natural factors alone fail to explain this recent increase, as similar climatic conditions in the past were not associated with the same amount of forest fires.
Forest fires and precipitation are strongly correlated in the Brazilian Amazon; in dry years, more forest fires occur. 2015 was a dry year, but not as dry as 2010 or 2005 were – years when the region faced anomalous droughts. Nevertheless, in 2015, forest fires increased 115.6 percent and 105.5 percent compared to 2005 and 2010, respectively. Hence it is safe to say that the peak observed last year was strongly associated with unregulated anthropogenic activities in the forest.
In the region, using fire in order to clear large areas is a common practice. The expansion of roads, settlements, croplands and cattle ranches has been leading fires to reach ever-wider areas of the forest.
The consequences associated with this issue are vast. They are felt locally, regionally and globally. Forest fires contribute to climate change due to the emission of three greenhouse gases: carbon dioxide, methane, and nitrous oxide. As the forest burns, health-damaging gases – carbon monoxide, non-methane hydrocarbons, methyl chloride, and methyl bromide – are also emitted, as well as volatile organic compounds (VOCs) and aerosols. VOCs interact with nitrous oxides to form ozone, a phytotoxic gas. Aerosols cause the suppression of cloud formation and the decrease of precipitation efficiency. Moreover, a positive feedback between fire-induced death of trees and increased solar penetration in the forest occurs, resulting in the intensification of successive fires…….https://news.mongabay.com/2016/09/the-alarming-number-of-fires-in-the-brazilian-amazon/?utm_content=buffer4318b&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer
If Amazon forest catches fire, world climate will be in even bigger trouble
Researchers are increasingly concerned that the Amazon rain forest — the world’s largest tropical forest, a huge repository of carbon and a vital cycler of water into rainfall across much of South America — will soon burn in a way that has not been seen in many years.
The reason is the lingering effect of the recent El Nino event. Forecasts from NASA and the University of California-Irvine, and from the International Research Institute for Climate and Society suggest that because of how El Nino reduced precipitation in the region earlier this year, the Amazon is far drier than usual, and primed to burn once the dry season reaches its height this summer (the fire season runs from June through November with a September peak).
According to the NASA/U.C. Irvine forecast, the Amazon is currently “far drier than 2005 and 2010 — the last years when the region experienced drought.” The years 2005 and 2010 also saw major blazes in the Amazon.
Indeed, the NASA/U.C. Irvine researchers shared data suggesting that the storage of water in the Amazon in March of 2016, as measured by NASA’s twin GRACE satellites (which detect gravitational anomalies at the Earth’s surface), is far lower now than it was in March during these prior years.
“We have the possibility of killing hundreds of thousands of trees in the Amazon in 2016, if you let these fires start,” says Paulo Brando, an Amazon fire expert at the Woods Hole Research Center and Ipam (the Amazon Environmental Research Institute).
If these forecasts are verified, there will be a great deal at stake. It isn’t just that huge, dangerous clouds of smoke could reach major urban areas ranging from Manaus to Rio. It’s that the fires risk helping to tip the Amazon into a new state that scientists fear — one in which it will be drier, store less carbon, cycle less water and generate less rainfall.
That would be disastrous for the Earth’s climate overall. The Amazon alone stores an enormous amount of carbon, 120 billion tons worth. Put that stuff in the atmosphere and the result would be justly termed catastrophic………
It is important to note that so far, what we are looking at are bad fire forecasts for this summer in the Amazon — but not a catastrophe at this point. The forecasts may not be realized. (That happens!) And the forecasts could also drive at least some action in Brazil and other Amazon countries to take steps to prevent people from starting fires, blunting the potential consequences of drought.
That’s the good news. The bad news is that scientists continue to talk about the Amazon in the same way they talk about, say, West Antarctica or the overturning circulation of the Atlantic Ocean — as a delicate system that we could tip, with enormous consequences. https://www.washingtonpost.com/news/energy-environment/wp/2016/07/12/the-ultimate-forest-fire-whatll-happen-when-the-amazon-burns/
Tropical countries need solar power, more than free cooling
Tropical sites need solar power, not free cooling, Data Center Dynamics 24 March 2016 By Paulo Cesar de Resende Pereira Free cooling can improve some measures of efficiency, but tropical countries may be better off looking at where their power comes from
The importance of data centers to the average citizen should not be underestimated. They are vital for even the most common daily function – from a simple internet search to a bank transaction. Their importance can even extend to, for example, the monitoring of the electricity delivered to one’s home.
But data centers are accused of being environmental villains due to their exorbitant consumption of energy, so reducing their environmental impact is vital. In this context, photovoltaic generation is an interesting alternative to free cooling, and especially suitable for tropical regions such as Brazil.
Using the wrong metricEcological footprint (ecofootprint), according to WWF Global, is connected to the impact of human activities, measured according to the production area and the amount of water needed to produce goods and assimilate the waste produced.
Data center efficiency is usually rated by PUE, a parameter conceptualized by the US, the EU and Japan to establish a single metric to assess the energy efficiency of data centers. The concept is not new, because the relationship between useful energy and invested energy is used in many other processes.
The calculation of this indicator is based on the relationship between the energy consumption by the installation as a whole (total energy) and the energy consumption exclusively by IT equipment (IT energy). Like any indicator, PUE may be called into question, but it remains a useful metric nonetheless.
It did not take long for the cooling system to be considered the greatest enemy of PUE; as a consequence, its efficiency has become closely related to its reduction. There is nothing more tempting than getting something for free; for instance, a data center that could potentially be cooled by nothing more than the forces of nature. Since this is not possible, the solution is to decrease a good percentage of energy consumed by central chilled water, taking advantage of free cooling, thus decreasing PUE………
Free energy, not free coolingThe concept of free energy emerges as an alternative to free cooling, on the grounds that it is more suitable to the Brazilian reality and to other countries with similar weather. It is related to power generation using any renewable energy source that has been obtained directly from nature through an environmentally sustainable process. This solution, as well as free cooling, aims to improve data center effectiveness and reduce the ecofootprint from data centers in general. Because of the distributed generation and the ability of interaction between the minigeneration and the energy provider, free energy has become a feasible concept.
Taking photovoltaic power as an example of free energy, when data centers are transformed into generation plants, they may apply this energy to the grid and offset it – not only from an energy standpoint but also economic. Once the concept of free energy is settled, it is inserted into another new term – EcoPUE – bringing a new idea for calculating PUE that is now even more environmentally friendly and presents a sustainable aspect, where the reduction of energy consumption in the data center is linked to the subtraction of the energy generated by the photovoltaic generation system. This renewable generated energy is called ‘free energy.’
Use what works
The increased demand for processing and storage of data, together with the environmental problems caused by high energy consumption, are forcing data centers in Brazil, and elsewhere, to seek more technological solutions and become increasingly green, using energy more efficiently and sustainably while providing a quality service to customers
. A combination of existing technology and techniques, along with new government legislation in Brazil, are now in place, so significant improvements have already been achieved. As an alternative to free cooling, the use of photovoltaics is increasingly being seen as a viable option in countries with a high solar radiation index – like Brazil – where renewable energy can be obtained for free from the natural resources available on the planet.
The concept of EcoPUE demonstrates that greater efficiency from a data center can be enforced with the use of photovoltaic generation, thus reducing their environmental footprint.
Paulo Cesar de Resende Pereira is director of Fox Engenharia e Consultoria in Brazil
This article is translated from the Portuguese-language section of the latest magazine at Datacenterdynamics.es http://www.datacenterdynamics.com/power-cooling/tropical-sites-need-solar-power-not-free-cooling/95907.fullarticle
Corruption and mismanagement stall Brazil’s nuclear programme
Turbulent Times for Brazil’s Nuclear Projects, Carnegie Foundation, TOGZHAN KASSENOVA October 29, 2015 “……….Othon was at the heart of Brazil’s nuclear program during the military government that lasted until 1985, and he remained indispensable for the decades that followed. In 2005, he became the chief executive of Eletronuclear, an operator of nuclear power plants and a subsidiary of Eletrobras, a state-controlled power company. Eletronuclear operates Brazil’s two nuclear power plants—Angra 1 and Angra 2—and is building a third plant in the picturesque region of Angra dos Reis, not far from Rio de Janeiro. Work on Angra 3 began in 1984. But after two years and the amassing of 70 percent of the equipment at the site, construction was suspended. Only after twenty-four years, in 2010, did construction resume on Angra 3.
The corruption charges against Othon stemmed from the construction of Angra 3. It was while he headed Eletronuclear that Othon was accused of receiving bribes from companies vying for Eletronuclear’s contracts. He was arrested on July 28 as part of an operation called Radioactivity, the sixteenth stage in Operation Car Wash.
Othon is currently accused of receiving 4.8 million Brazilian reais (or approximately $1.2 million) in bribes through Aratec Engenharia, a company he owned. Brazilian media report that Othon’s company accepted payments for the development of turbines that generate electricity using river flow.
Othon’s arrest is not the only nuclear dimension of Brazil’s corruption scandal. Marcelo Odebrecht, whose eponymous company is Brazil’s largest construction conglomerate, was arrested on corruption charges in June. His company is accused of paying bribes to Petrobras executives to gain lucrative contracts, overcharging Petrobras for construction projects, and siphoning off illegal profits to politicians who, in turn, facilitated the conglomerate’s operations.
Odebrecht is one of the largest companies in South America. With operations in 21 countries and a workforce of 168,000, the equivalent of the population of a medium-sized U.S. city, it has been involved in major infrastructure projects in places as diverse as Saudi Arabia and Angola.
Odebrecht is the main contractor for Brazil’s nuclear submarine program. In 2009, when Brazil and France signed a cooperation agreement to build five submarines—four conventional and one nuclear—together, Odebrecht received a contract worth $1.9 billion to construct a new naval shipyard in Itaguaí. In 2013, Brazil’s then president Dilma Rousseff attended the shipyard’s inauguration ceremony. With Odebrecht’s CEO under arrest, the immediate future of the company is uncertain.
Brazil’s Nuclear Ambitions ………..
Funding was pouring steadily into the nuclear submarine program. Since 2009, Brazil has spent $3.2 billion to build a submarine shipyard and a naval base. Brazil’s leaders promoted the program as one that would once again prove Brazil’s technological might—just as Embraer planes did decades earlier.
In 2010, construction of the Angra 3 nuclear power plant resumed, and while the government never touted nuclear energy as its priority, commitments were made to build up to four to eight new nuclear power plants.
Five years later, a very different Brazil has emerged. Foreign policy, let alone nuclear diplomacy, has decreased significantly on the ladder of Brazilian government priorities. Unlike Lula, President Dilma from the very beginning was less inclined to invest in an active foreign policy. Now she is too preoccupied with domestic problems to spend time on diplomacy. With her approval ratings hovering at 8 percent, foreign policy is unlikely to become a priority for the current government in the near future. The possibility that the government will actively pay attention to matters of global nuclear politics is even less likely.
Former head of Brazil’s nuclear company will face trial
Judge accepts charges filed against former head of Brazil nuclear power firm Fox News, 3 Sept 15 SAO PAULO – A federal judge Thursday accepted the charges filed by prosecutors against the former head of Eletronuclear, the state-owned company that operates Brazil’s two nuclear power plants, for his suspected role in a bribery scandal.
Othon Luiz Pinheiro da Silva will face trial for allegedly taking 4.5 million reals ($1.22 million) in bribes from construction companies for contracts involving the construction of the Angra 3 nuclear plant in Rio de Janeiro.
Judge Sergio Fernando Moro said in a statement that he also accepted the charges filed against 14 others, including Flavio David Barra, the top energy executive at construction firm Andrade Gutierrez and da Silva’s daughter, Ana Cristina Toniolo…….http://www.foxnews.com/world/2015/09/03/judge-accepts-charges-filed-against-former-head-brazil-nuclear-power-firm/
Police asks prosecutors to charge former head of Brazil’s nuclear power on corruption
Police ask that charges be filed against former head of Brazil’s nuclear power company http://www.foxbusiness.com/markets/2015/08/28/police-ask-that-charges-be-filed-against-former-head-brazil-nuclear-power/ SAO PAULO – Police say they have asked prosecutors to file charges against the former head of Eletronuclear, the state-owned company that operates Brazil’s two nuclear power plants, for his suspected role in a bribery scandal.
A federal police spokesman who was not authorized to be quoted by name said late Thursday that the department wants prosecutors to charge Othon Luiz Pinheiro da Silva with money laundering and corruption for allegedly taking as much as $10 million in bribes from construction companies for contracts involving the construction of the Angra 3 nuclear plant in Rio de Janeiro.
Da Silva was taken into custody in late July and one week later stepped down as Eletronuclear’s chief executive officer.
The spokesman said the department also wants charges filed against Flavio David Barra, the top energy executive at construction firm Andrade Gutierrez and da Silva’s daughter Ana Cristina Toniolo for their suspected roles in the scheme. Da Silva, his daughter and Barra have denied any wrongdoing.
During Brazil’s military regime from 1964-1985, the retired navy admiral and nuclear engineer headed Brazil’s secret program to master the technology needed to transform uranium into fuel to generate electric power in nuclear plants. Da Silva also oversaw the ongoing project to build a nuclear powered submarine.
The request for charges to be filed come as police and prosecutors try to determine whether a kickback scheme engulfing state-run oil company Petrobras extends to other state firms, including electric utilities company Eletrobras, of which Eletronuclear is a subsidiary.
Prosecutors have said the scheme involved roughly $2 billion in bribes and other illegal funds. Some of that money was allegedly funneled back to the ruling Workers’ Party and its allies’ campaign coffers. It also allegedly included the payment of bribes to Petrobras executives in return for inflated contracts.
For Alexandre Barros, a political risk consultant with the Brasilia-based firm Early Warning, the Eletronuclear case shows that Petrobras-like corruption and kickback schemes are “probably present in other state-run companies.”
“Schemes like these have long been part of our culture and I think other similar schemes start emerging all over the place”, Barros said “My big fear is that the armed forces may start feeling uneasy,” he added, without elaborating.
Corruption scandal may halt Brazil’s nuclear power programme
Ildo Sauer, a nuclear physicist who worked under Pinheiro in the late 1980s, says Brazil’s nuclear program is too expensive and has been co-opted by politicians and major construction and engineering firms.
“The problem is the lobbyists who see nuclear as a chance to build expensive megaprojects with little regard for cost,” said Sauer, a former head of natural gas at Petrobras. “It’s no longer about science or energy. It’s about politics and money, and that brings corruption.
Brazil Nuclear Leader’s Arrest May Stymie Atomic Ambitions Reuters, VOA, July 30, 2015 RIO DE JANEIRO— The arrest of the longtime head of Brazil’s nuclear energy utility on corruption charges could disrupt a plan to revive Brazilian nuclear ambitions whose roots go back to its atomic-bomb program in the 1980s. Continue reading
Brazil becoming world’s top market for biopower
Biopower, also known as biomass power or bioenergy, is the use of any organic material to generate electricity. The U.S. has long been the global leader, but the report suggests outdated infrastructure and a bloated existing capacity that has saturated the market will lead to Americans being overtaken in four years’ time……http://www.ibtimes.com/brazil-overtake-us-leading-market-renewable-energy-metric-1724500
Brazil cools on nuclear power plans; favors wind
Brazil will probably scale down its plans for new nuclear plants due to safety concerns following the 2011 radiation leak in Japan and pick up some of the slack with a “revolution” in wind power, the head of the government’s energy planning agency said.
http://planetark.org/enviro-news/item/69772
Brazil’s wind farms bring cheapest electricity prices
Wind farms set record low generation prices, SMH, December 16, 2012 Four energy developers agreed to sell power from 10 proposed wind farms in Brazil at the cheapest rates ever.
Enerfin Sociedad de Energia SA, Renova Energia SA, EGP- Serra Azul and Bioenergy Geradora de Energia Ltda. won contracts to sell electricity to distributors for an average price of 87.94 reais ($41) a megawatt-hour, Brazil’s national energy agency Empresa de Pesquisa Energetica said in an e-mail yesterday. (Australian wholesale prices are about $50 per megawatt-hour, including the $23 carbon tax per tonne.)
“This is definitely the cheapest wind energy in the world,” Maria Gabriela da Rocha Oliveira, a Sao Paulo-based analyst with Bloomberg New Energy Finance, said in a telephone interview. It’s 12 per cent lower than the August 2011 auction that yielded an average price of 99.58 reais a megawatt-hour. That was the lowest price in the world for wind power then and the least expensive power in Brazil, beating natural gas and hydroelectricity….. http://www.smh.com.au/business/carbon-economy/wind-farms-set-record-low-generation-prices-20121216-2bh4z.html#ixzz2FLfka1Ga
Areas of naturally high radiation have also higher cancer rates
2004 Study: Two of Brazil’s High Background Radiation Areas Have Higher Cancer Mortality Via : http://ex-skf.blogspot.com.au/2012/04/2004-study-two-of-brazils-high.html quote: APRIL 14, 2012
I have been told numerous times that “People in naturally high background radiation areas in the world suffer no ill effect from the high radiation.” I just stumbled upon one study in 2004 on such areas in Brazil.
Conclusion of this particular study: Cancer mortality in “Poços de Caldas, and Guarapari is higher than would be expected for their respective reference population”, whereas “cancer mortality for the Araxá population is lower than would be expected”.
International Congress Series
Volume 1276, Pages 3-468 (February 2005)
Link http://www.sciencedirect.com/science/journal/05315131/1276
High Levels of Natural Radiation and Radon Areas: Radiation Dose and Health Effects, Proceedings of the 6th International Conference on High Levels of Natural Radiation and Radon Areas, Osaka, Japan
6–10 September 2004… http://nuclearhistory.wordpress.com/2012/08/23/2004-study-two-of-brazils-high-background-radiation-areas-have-higher-cancer-mortality/
Brazil ditches nuclear reactor plans, in favour of renewable energy and gas
Brazil shelves plans to build new nuclear plants Google News 10 May (AFP) BRASILIA — Brazil said Wednesday it has shelved plans to build new nuclear power stations in the coming years in the wake of last year’s Fukushima disaster in Japan.
The previous government led by former president Luiz Inacio Lula da Silva had planned to construct between four and eight new nuclear plants through 2030….. “The last plan, which runs through 2020, does not envisage any (new) nuclear power station because there is no need for it. Demand is met with hydro-electrical power and complementary energy sources such as wind, thermal and natural gas,” Energy ministry’s executive secretary, Marcio Zimmermann said in remarks released by the ministry Wednesday. “The 2021 plan, as far as I know, will not consider nuclear power stations either, ” he added, ….
Brazil postpones its nuclear power project
Brazil delays nuclear plans after Japan disaster RIO DE JANEIRO (MarketWatch) Feb. 8, 2012, — Brazil’s plans to build four new nuclear power plants have been delayed by about 18 months following last year’s accident at the Fukushima Daiichi nuclear plant in Japan, an official of Brazilian state-owned nuclear power company Eletronuclear said Wednesday….
1.This Month
U.S. Withdrawal from Human Rights Council “Imminent” After U.N. Condemns Israel for Gaza Massacre
Trump Kim summit: What happens next? – BBC News
Trump Meets Kim Jong-un: A Closer Look
Language Expert: Donald Trump’s Way Of Speaking Is ‘Oddly Adolescent’ | The 11th Hour | MSNBC
PETITIONS
Tell Congress: Stop Trump from ordering a nuclear first strike without a Congressional declaration of war.
PREVENT UNNECESSARY RADIOACTIVE RISKS ACROSS THE USA NATION
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