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Solving puzzle ice age climates: Southern Ocean & explanation for 'Last Glacial Maximum'
2014-06-03 12:45:00| Climate Ark Climate Change & Global Warming Newsfeed
ScienceDaily: The paleoclimate record for the last ice age -- a time 21,000 years ago called the "Last Glacial Maximum" (LGM) -- tells of a cold Earth whose northern continents were covered by vast ice sheets. Chemical traces from plankton fossils in deep-sea sediments reveal rearranged ocean water masses, as well as extended sea ice coverage off Antarctica. Air bubbles in ice cores show that carbon dioxide in the atmosphere was far below levels seen before the Industrial Revolution. While ice ages are set...
Tags: age
maximum
ice
southern
Solving A Taste and Odor Problem Step By Step
2014-05-22 13:31:36| pollutiononline Downloads
By Terry Keep of TrojanUV, Said Abou Abdallah of Arcadis, and Dr. Dean Reynolds, Department of Water Treatment City of Alliance, Ohio The City of Alliance Ohio’s water system has experienced annual Taste and Odor (T&O) events since the mid 1950’s, when the first of two reservoirs, Deer Creek Reservoir, was placed into service. Nutrient contaminants, in particular phosphorous, in the watershed accumulate in the reservoirs causing algal blooms. The blue-green algae, also known as cyanobacteria, produce two aesthetically-offensive secondary metabolite compounds, 2-methyisoborneal (MIB) and trans-1,10-dimethyl-trans-9-decalol (Geosmin). Although both compounds occur in high concentrations in the reservoirs, frequent testing showed that MIB is the primary compound causing T&O problems in the city’s drinking water. MIB can be detected by a few very sensitive persons as low as 7 ng/L (parts per trillion, ppt), but most people cannot detect MIB until it is greater than 20 ppt. A particularly bad T&O event occurred in the winter of 2009 when the MIB level reached 340 ppt. The City was flooded with complaint calls. The Alliance Water Treatment Plant (WTP) fought the problem with the available treatment processes. The main process used for removing MIB was powder activated carbon (PAC). In addition, 24 in. of granulated activated carbon (GAC) capping the eight filter beds in the plant had shown some seasonal success at removing MIB. Concentrations for a typical 12-month period are presented for 2010 and 2011 in Figure 1. The highest MIB concentration during that time was 1100 ppt.
Innovative Problem Solving: Rain Gardens in Northeast Portland
2014-05-16 20:15:58| PortlandOnline
Residential rain gardens help reduce pipe capacity problems for a Northeast Portland neighborhood
Tags: problem
rain
innovative
portland
Solving Pressure Distortion and Leakage for Liquid Manufacturers with New Sanitary Pipeline Magnets
2014-05-05 15:00:00| Food Processing Technology
The liquid, dairy, soups, sauces and marinate industries will now be able to avoid major problems by utilising recent technology in liquid line magnets.
Tags: pressure
manufacturers
liquid
solving
Locking Spikes solving landscaping separation problems.
2014-04-14 14:31:12| Industrial Newsroom - All News for Today
Addressing paver edging challenges, Edgetite™ Spikes accelerate projects by creating barrier between landscape and pavers. Design ensures pavers are installed properly, which eliminates time spent on re-installation. As spike is hammered into compacted base, angled tip deflects away from installation. Simultaneously, head pushes edge restraint tightly against brick. Angled, final position of spike resists frost heave while adding strength and longevity. This story is related to the following:Spikes | Countersunk Head Nails
Tags: problems
separation
solving
landscaping
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