Xem 1-20 trên 104 kết quả Soil bacteria
  • Bacterial community in dioxin contaminated soil and mud samples from Danang airport was enumerated and studied for their potential degradation capability against three-ring compound carbazol. The cell number was determined on nutrient rich medium and on mineral medium supplemented with carbazol. It has been showed that number of cells presented in mud samples was significantly higher than in soil samples, in the range of 1 magnitude order. About 50% of the total cell number in each sample grown on the medium with carbazol.

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  • Petroleum contaminant decomposition and in-situ destruction may be accomplished using chemical oxidation technologies. In contrast to other remedial technologies, contaminant reduction can be seen in short time frames (e.g., weeks or months). As discussed in this chapter, a variety of chemical oxidants and application techniques can be used to bring oxidizing materials into contact with subsurface contaminants to remediate the contamination.

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  • Point source wastewater treatment-Farms with large livestock and poultry operations, such as factory farms, are called concentrated animal feeding operations or confined animal feeding operations in the U.S. and are being subject to increasing government regulation. Animal slurries are usually treated by containment in lagoons before disposal by spray or trickle application to grassland. Constructed wetlands are sometimes used to facilitate treatment of animal wastes, as are anaerobic lagoons.

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  • Polyethylene-starch blend polymer has already found to be a potential candidate to replace non-degradable plastic in packaging [7]. However, the degradation of that polymer in natural ambience (soil burial test) needs to be further evaluated. The purpose of this study is to investigate the degradability of PE-starch blend polymer in soil and in liquid medium. The soil is added starch degrading bacteria isolated from natural soil.

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  • The theoretical metrics developed, such as genetic variance and heritability (Fisher, 1930; Wright, 1931), provided the quantitative standards necessary for the evolutionary synthesis. Further research has focused on the origin of genetic diversity, its maintenance and its role in evolution. Simple questions such as “who breeds with whom” initiated studies on the relatedness of populations.

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  • Success in any enterprise depends on the interaction of tal- ented, energetic people. We believe office furniture should encourage this interaction by enabling the easy exchange of ideas and information. Monolithic work cells dominated by unmovable desks and hulking overhead storage can debili- tate the office landscape and limit the effectiveness of the people who must work in them.

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  • Permits may be required for parades, the sale and consumption of alcohol, pyrotechnics, and the sale of food items. Fire safety inspections should be required. Permission may also be required if it will be necessary to close certain adjacent or peripheral roads or streets. A permit may be required for the mass gathering itself. Most public sector agencies have adopted a “User Pays” policy for services provided at sporting and entertainment events.

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  • Before market segmentation can take place, the relevant market has to be defined, meaning the product related, geographical and temporal boundaries of that market have to be fixed. 21 Any such definition has to look at the market through the consum- ers’ eyes, because the consumer makes decisions based on the evaluation of alterna- tives and substitutes.

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  • The Chempolis process is also based on using formic and acetic acid (Rousu & Rousu 2000, Rousu et al. 2003, Anttila et al. 2006) as cooking chemicals to produce pulp, biochemicals and biofuels from non-wood raw materials. Formic acid is the main component in cooking liquor. After cooking, the pulp is washed and pressed in several stages with formic acid. The last washing stage is performed at a high pulp consistency with performic acid. Then, the pulp is bleached with alkaline peroxide. Spent cooking liquor can be evaporated to 90% dry solids and incinerated.

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  • The observed differences between willingness to pay and willingness to accept have been labeled an “endowment effect”, intimating that the phenomena is due to loss- aversion to the domain of choices over bundles of goods and money (Thaler, 1980; Tversky and Kahneman, 1991;Camerer, Loewenstein and Prelec,2003). The theoretical idea is that an individual who owns a good anticipates a loss from the sale and, thus requires a higher payoff than the individual would pay to acquire the good if it were not owned (Kahneman 1991, Kahneman 1990, Knetsch 1989, Knetsch 1984).

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  • Support groups led by our social workers are a good place to exchange information and share experiences with other people in similar situations, which can make it easier to cope. Our social workers also help you find the practical help you might need, such as financial assistance or tips on managing side effects. All of CancerCare’s services, offered by telephone, online, and face to face, are completely free of charge. By talking with your children honestly and helping them express their emotions, you make it easier for them to feel safe and secure.

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  • At the end of the 1980s, more than 1,000 savings & loan institutions in the United States were threatened by insolvency due to financing with divergent maturity dates in connection with high interest rates for depositors but comparatively low rates on mortgage lending. 11 In 1989, the Resolution Trust Corporation (RTC) – a bad bank – was founded. The RTC was set up with government funding and to a limited extent with money from private investors. Between 1989 and 1995, the RTC took over 747 bankrupt S&Ls with a book value of 394 billion dollars. The S&L bailout cost US taxpayers...

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  • Whole system thinking takes a view of the company’s manufacturing system and associated costs as a whole, rather than by functional department. This new way of thinking empowers factory managers to accept higher costs on low value items that may be associated with a given functional department, to produce substantial overall cost savings throughout the production cycle. Companies engaged in Lean Manufacturing are, fundamentally, utilizing new financial decision-making (“whole system”) approaches and new powerful cost drivers (e.g., reduced flow days) to eliminate waste.

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  • The authorities have reached consensus on the way forward for a Debt Resolution Strategy with Cabinet approval of the Zimbabwe Accelerated Arrears Clearance, Debt and Development Strategy (ZAADDS) in 2010.

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  • The ribbon itself forms an abstract letter ‘W’ (for World) that changes colour from pink through blue into a green that represents a green economy. The person’s position in the ribbon is where the colour incidentally transitions into green, signifying that people – you – are central to a functional green economy and thus it must include you. The light green part of the ribbon curves into a slight horizon of the earth.

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  • Based on results of the 2008 Family Health Survey, the majority of Wisconsin residents in 2008 had health insurance for the entire past year. That is, they were continuously covered during the 12 months prior to the survey interview. An estimated 4,868,000 residents (89%) were insured for all of the past 12 months. An estimated 319,000 Wisconsin household residents (6%) had no health insurance of any kind during the past 12 months. Another 276,000 residents (5%) had health insurance for part of the year and were uninsured for part of the year. Together, an estimated...

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  • An additional benefit of hydrogen peroxide and Fenton's Reagent is the temporary increase of oxygen levels in and around the treatment area. The increased oxygen levels at the fringes of the treatment area can enhance naturally occurring aerobic biodegradation processes that reduce contaminant mass. While there may be concerns about oxidizing hydrocarbon-degrading bacteria in the chemical oxidation treatment area, many studies have shown that soil cannot be readily sterilized by Fenton's Reagent and that microbial populations rapidly rebound following chemical oxidation treatment.

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  • Airborne suspended particulate matter (PM) can be either primary or secondary in nature. Primary particles are emitted directly into the atmosphere either by natural or anthropogenic processes, whereas secondary particles have a predominantly man made origin and are formed in the atmosphere from the oxidation and subsequent reactions of sulphur dioxide, nitrogen oxides and VOCs.

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  • European society and the European economy do not yet exploit the full potential for resource efficiency. Much recyclable waste is either exported or sent to landfill. A lack of long-term frameworks holds back planning and investment, most obviously on a climate and energy framework beyond 2020, but also on long term sustainable use of key resources such as air, soil, energy, water, fish and biomass. At the same time, such frameworks can help to galvanise the innovation needed to exploit the potential of the transition to a low-carbon economy in areas like transport, energy and agriculture....

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  • In the past decade manufacturers and retailers have been gradually switching from above the line mass media advertising to a variety of below the line sales promotions. Although sales promotions take up a very large share of total marketing expenditure, they remain an area of less strategic consideration or attention than any other aspect of the promotion mix (Srinivasan and Anderson, 1998). The potential benefits of using sales promotions could range from giving immediacy and encouraging purchase of a product or service by changing the perceived value- for-money equation.

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