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sediments in Medical News

American Chemical Society's Weekly PressPac: June 11, 2008

... ARTICLE #2 FOR IMMEDIATE RELEASE Lake sediments help scientists trace 7,000 years of mining, metal...a semi-monthly journal. Using carbon-dated core sediments taken from Liangzhi Lake in Hubei province, Xiang-...entrations of copper, nickel, lead and zinc in the sediments began to rise, indicating the onset of Bronze Age ...

2008 L'Oreal USA Fellowships For Women in Science Awarded to Five Groundbreaking Researchers

... deposits for fuel. The primary focus of her research is the development of instrumentation to regularly measure methane that has dissolved in sediments around the hydrates over time, which will allow researchers to better understand the role of hydrates in an abrupt climate change situation. ...

New findings on emerging contaminants

...icipal wastewater are discharged into Southern California coastal waters every day. Our study shows that some of these contaminants can be detected in sediments and water, even though the effluent is immediately diluted at least one hundredfold upon discharge. Because most municipal treatment plants do not ...

Store-bought freshwater fish contain elevated levels of mercury, arsenic and selenium

...reshwater fish with particular attention to fish entering the U.S. from other countries. According to Dr. Volz, the results also may indicate that sediments in Lake Erie remain contaminated because of only relatively recent reductions in industrial pollution and active coal-fired power plant air emissions ...

Human Induced Global Warming Drying Up Arctic Ponds

... kinds of diatoms and mosses had taken over the ponds in recent years, the first signs of global warming. During their study, the duo searched sediments in the ponds and dug out the shells of diatoms-microbes that grow protective mineral sheaths around themselves. "In recent years there has act...

Residues Go Merrily Down the Stream in Portland

... to narrow down on the main pollutants and its source in the water systems. This exercise by scientists found residues of medicines and coffee sediments in the water bed. The list of compounds includes the likes of Prozac, Tagamet, Benadryl, and Micatin. Caffeine was also present in abundance which has...

Resident Bacteria May Help Clean Phosphorous From Lakes

...fect phosphorus cycling in the lakes. In eutrophied lakes, or those contaminated with excess nutrients, phosphorus generally is trapped in the sediments at the bottom. In spring, the lake 'turns over' and the phosphorus becomes a major ingredient in that giant, oxygen-rich mixing bowl. It's a recipe fo...

Dire Future Predicted for Europe's 4 Seas

...y due to a legacy of past phosphate and nitrogen loads (from agriculture and industrial/domestic effluent) that had accumulated in soils, aquifers and sediments and continued to leak into the sea. This may be further exacerbated by nutrient loads accompanying intensification of food production in Europ...

Global Warming 55 Million Years Ago Too, Thanks to Fossil Fuels

...ls weren’t necessarily coal or oil and they weren’t, of course, being burned in engines at the end of the Paleocene epoch. Instead, it was carbon-rich sediments that were baked in place in the ground by the intrusion of a lot of molten rock and an awful lot of heat into the landmass that comprised both Europe ...

Bacterium Could Treat PCBs Without the Need for Dredging

...ethod to remove PCBs from the environment is to dredge and then deposit the sediments in a landfill. In order to detoxify PCBs the strong bonds between the...t of cost-effective methods for on-site PCB remediation." Bedard used sediments from the Housatonic River in Massachusetts — an area known to be contaminat...
sediments in Medical Products

Airfuge Ultracentrifuge - For 60 Hz, 120V

Features:...o five hours, with hold position for long runs. Batch rotor pellets particles from a large sample. Electron microscopy particle-counting rotor (EM-90) sediments particulates from very small volumes onto supports suitable for insertion into an election microscope. Four fixed angle rotors (A-110; A-100/18; A-100...
Company:Beckman Coulter, Inc.

Airfuge Ultracentrifuge - For 60 Hz, 120V; with Digital Tachometer

Features:...o five hours, with hold position for long runs. Batch rotor pellets particles from a large sample. Electron microscopy particle-counting rotor (EM-90) sediments particulates from very small volumes onto supports suitable for insertion into an election microscope. Four fixed angle rotors (A-110; A-100/18; A-100...
Company:Beckman Coulter, Inc.
sediments in Biological News

New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon

Scripps Institution of Oceanography at the University of California, San Diego, in conjunction with Italy's Venice Water Authority, Consorzio Venezia Nuova and Thetis SPA, has launched a multifaceted scientific program aimed at providing fundamental information about the effects of sediment translo...

August 2009 Geology and GSA Today media highlights

...n a cushion of high-pressure pore water trapped in sediments thrust beneath the fault zone. Mid-Cretace..., Mankato, Minnesota 56001, USA. Pages 695-698. sediments from a small lake in Michigan contain millimeter-s... marine life, oceanic chemistry, and the sea-floor sediments deposited. Eriksson et al. show that the Lau Event...

Iron isotopes as a tool in oceanography

...ved iron in seawater derived from bottom (benthic) sediments is increasingly recognised as being important. Aro... margins, in particular, iron is released from the sediments during the decomposition of organic carbon by diss...alifornia margin (120 m water depth), and deep-sea sediments from the Southern Ocean around the Crozet Island P...

Earliest animals lived in a lake environment, research shows

...t rock samples in South China has found that the first animal fossils in the paleontological record are preserved in ancient lake deposits, not marine sediments as commonly assumed. "We know that life in the oceans is very different from life in lakes, and, at least in the modern world, the oceans are far ...

Early initiation of Arctic sea-ice formation

...is species represent the earliest known fossil record of sea-ice diatoms. The researchers attribute the presence of Synedropsis fossils in these sediments to the presence of sea ice, and silica-enriched waters that favour their preservation. They propose that, like Synedropsis species found in polar re...

Methane-eating microbes can use iron and manganese oxides to 'breathe'

...obiology, California Institute of Technology, incubated a variety of marine sediments to determine if there were microbes that could convert methane to carbon di...ile Beal has categorized the more than a dozen microorganisms living in the sediments she used, she does not know which of these microbes is responsible for cons...

Arctic climate under greenhouse conditions in the Late Cretaceous

...cially adapted species resembling those of the modern North Pacific Subtropical Gyre, or preserved in relatively recent organically rich Mediterranean sediments called 'sapropels'. The sheer number of diatoms found in the Late Cretaceous sediment cores indicates exceptional abundances equalling modern value...

Scientists 'rebuild' giant moa using ancient DNA

...ent DNA we have been able to connect feathers to four different moa species," he says. The researchers compared the feathers to others found in the sediments from red-crowned parakeets that are still living today, determining they had not faded or changed in colour. They then reconstructed the appearance of...

Phthalic symbol

...of the most frequently found in diverse environmental samples including groundwater, river water, drinking water, open ocean water, soil humates, lake sediments and marine sediments, the researchers say. They have now used acclimation and enrichment techniques to ferment adequate quantities of the active mi...

NOAA report finds threats to California's Cordell Bank Marine Sanctuary

...tion feeding area for local and migratory marine life. Its unique rocky undersea thrives with invertebrates and fishes and is surrounded by the softer sediments of the continental shelf. ...
sediments in Biological Technology

Bacteria from the deep can clean up heavy metals

... A species of bacteria, isolated from sediments deep under the Pacific Ocean, could provide a powerful clean-up tool for heavy metal pollution. Writing in the current issue of the journal, Microbio...

New Initiative Focuses on Water Quality Improvement in the Mississippi River Basin and Gulf of Mexico

...rking farms in the Yazoo-Mississippi Delta region of the Lower Mississippi Valley. BMPs will be designed to reduce off-site movement of nutrients and sediments while providing secondary environmental benefits in the form of improved fish and wildlife habitat and water conservation. The project will include a...

90 billion tons of microbial organisms live in the deep biosphere

...investigated sediment cores collected from several hundred meters beneath the seafloor of the Atlantic and Pacific Oceans and the Black Sea. The cored sediments included samples that were the result of research expeditions conducted by the Integrated Ocean Drilling Program (IODP). According to co-author Pro...

Where does stored nuclear waste go?

... that a number of contaminants, such as cesium, react strongly with Hanford sediments and move only under extreme conditions. Researchers found that another contaminant, uranium, reacts with the sediments in complex ways and its migration varies under different conditions. Other...

The sea ice is getting thinner

...omponents in ice and seawater. Sea-ice ecosystems in the seawater and on the ocean floor will also be a focus of investigations. Scientists will take sediments from the ocean floor in order to reconstruct the climatic history of the surrounding continents. Oceanographic measuring buoys were set out in all ...

UW-Stevens Point Professor Receives Patent Approval For New Technology

...sed the device to quantify emissions of global warming gases when agricultural pollutants in ground water enter streams; to study natural processes in sediments and wetlands that convert nitrate pollution to harmless nitrogen gas; and to chart the historical degradation of ground water quality over the last 60...

TIP/UW Scientists Provide Mars Rover Commentary

... or not the planet once had an abundance of water that could have harbored some forms of life. The rover's mission is to sample the planet's rocks and sediments for clues to Mars' geologic history. Equipped with two camera systems, a package of advanced analytical instruments, magnets, and a scraper called RAT...

The Use of MasterTaq Polymerase for PCR with Humic Material-Contaminated DNA

... Direct extraction of total DNA from soils or sediments always results in coextraction of other...numbers of bacterial cells in soils and sediments by polymerase chain reaction. Appl Environ Microbi... bacterial DNA from humic substances in sediments for polymerase chain reaction. Appl Environ ...
sediments in Biological Definition

Cell growth

...ria and protozoa that are visible to the naked eye. See: Table of cell sizes - Dense populations of a giant sulfur bacterium in Namibian shelf sediments - Large protists of the genus Chaos , closely related to the genus Amoeba Cell reproduction The process of cell reproduction has three...

Evolution

...ing when various lineages developed. As fossilization is an uncommon occurrence, usually requiring hard parts (like bone) and death near a site where sediments are being deposited, the fossil record only provides sparse and intermittent information about the evolution of life. Fossil evidence of early life...

Origin of life

...en we would expect to find at least somewhere on this planet either massive sediments containing enormous amounts of the various nitrogenous organic compounds, acids, purines, pyrimidines, and the like; or in much metamorphosed sediments we should find vast amounts of nitrogenous cokes. In fact no such materials...
sediments in Biological Dictionary

Protocells

... the lab and demonstrated how ... Tags origin of life, protocells . Comments No comments yet, you could be the first. ... nama group proterozoic sediments protiens proto-metabolism protocells ... ...

Microbial mats

... Anhydrophilic, Halotolerant Microbial Mats of San Salvador Island, Bahamas ... On San Salvador, luxuriant microbial mats blanket the shallow sediments in many ... Anti- Microbial Floor Mats are commercial-grade mats that trap dirt and debris and are constructed with an environmentally safe, a...

Mesozoic Era

...Information about Mesozoic Era in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary. Search Results ... mantled by sediments deposited in the Mesozoic era (225 ... It was followed by the MESOZOIC ERA , (q.v.), and included the CAMBRIAN PERIOD, ... The Triassic peri...

Archaebacteria

...e archaebacteria . ... Archaea or Archaebacteria is a major division of living organisms, as well as ... Polar lipids of archaebacteria in sediments and petroleums. Science 217(4554) ... These archaebacteria live in environments without oxygen. ... The second group of Archaebacteria are know...
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