Tiny samples could yield big predictive markers for pancreatic cancer
A handful of proteins, detected in incredibly tiny amounts, may one day help doctors distinguish between a harmless lesion in the pancreas and a potentially deadly one, say researchers at Fox Chase Cancer Center.
The researchers believe that these protein biomarkers, if confirmed in subsequen...
Bringing Martian samples to Earth -- preparations outlined in journal Astrobiology
New Rochelle, NY, August 13, 2008 A critical component of NASA's Mars exploration program involves bringing planetary samples
back to Earth for in-depth analysis, plans for which are detailed in the latest issue of Astrobiology, a peer-reviewed journal published by Mary Ann Liebert, Inc. The re...
Scientists obtain core samples from subsea fault system off Japan
The third expedition of the Integrated Ocean Drilling Programs Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) completed its mission off the Kii Peninsula today. The expedition science party, 26 scientists representing 10 countries, set forth on Dec. 19, 2007, aboard the drilling vessel Ch...
Safe water: simpler method for analyzing radium in water samples cuts testing time
A simpler technique for testing public drinking water samples
for the presence of the radioactive element radium can dramatically reduce the amount of time required to conduct the sampling required by federal regulations. The U.S. Environmental Protection Agency (EPA) has approved use of the new ...
UniPixel Announces Availability of Opcuity(TM) Finger Print Resistant Film Test Samples
Opcuity FPR Prevents Finger Prints on Touch Displays, Without Sacrificing Display Viewing Quality
THE WOODLANDS, Texas, March 26 /PRNewswire-FirstCall/ -- Uni-Pixel, Inc. (OTC Bulletin Board: UNXL), the developer of a unique new thin film called Opcuity(TM) FPR (Finger Print Resistant), today...
Lupus gene finding prompts call for more DNA samples
Wellcome Trust researchers have identified a key gene involved in the disease Lupus, which affects around 50,000 people in the UK, mostly women. The lead researcher behind the study has called for more patients to volunteer DNA samples
to enable them to further study the underlying causes of the d...
Computer program traces ancestry using anonymous DNA samples
Troy, N.Y. -- A group of computer scientists, mathematicians, and biologists from around the world have developed a computer algorithm that can help trace the genetic ancestry of thousands of individuals in minutes, without any prior knowledge of their background. The teams findings will be publis...
Free drug samples influence prescribing, say one in three doctors
One in three doctors agree that free drug samples
influence prescribing, finds a small but representative US survey published in the Journal of Medical Ethics.
But they also think that other doctors are more likely to be influenced by incentives than they are, the data show.
In March 2003, t...
Hair samples show babies can be exposed to 'crystal meth' while in the womb
Babies can be exposed to methamphetamine or "crystal meth" while in the womb, reveals an analysis of hair samples, published ahead of print in the Fetal and Neonatal Edition of Archives of Disease in Childhood.
Unlike hair, the most commonly used detection methods (blood and urine), cannot regis...
Bird samples from Mongolia confirmed as H5N1 avian flu
The United States Department of Agriculture (USDA) has positively identified the pathogenic form of avian flu--H5N1--in samples
taken from birds last week in Mongolia by field veterinarians from the Wildlife Conservation Society (WCS). It is the first instance of this viral strain occurring in wild...
Highest ever winter water temperatures recorded
...ing System (IMOS), a National Reference Station mooring has been deployed at the same site, and data is now available online every 10 minutes. Monthly samples
are taken by boat to measure nutrients, phytoplankton, and zooplankton (biomass and species composition).
Satellite images indicate the surface wa...
Carnegie Mellon's Jean VanBriesen leads research team on Monongahela River
...nd Environmental Engineering Department. The sensors will monitor for some aspects of water quality, and the Carnegie Mellon team will take additional samples
for bromide and sulfate.
Besides the fieldwork, Carnegie Mellon researchers will add data to RAIN's Web-based public informati...
Growing evidence of marijuana smoke's potential dangers
...g marijuana smoke vs. tobacco smoke in terms of toxicity to cells and to DNA. Scientists exposed cultured animal cells and bacteria to condensed smoke samples
from both marijuana and tobacco. There were distinct differences in the degree and type of toxicity elicited by marijuana and cigarette smoke. Marijua...
Lead-based consumer paint remains a global public health threat
...analyzed a total of 373 new household enamel paint samples
of various colors and brands from 12 countries in ...Africa, Asia and South Americawith a minimum of 10 samples
from most countries included in analysis. His goal...s. In that study, 75 percent of the consumer paint samples
tested from countries without controls including I...
Holding breath for several minutes elevates marker for brain damage
...ssible) and breath-holding warm-ups.
The researchers took arterial blood samples
from a catheter inserted into the artery that runs through the wrist. They took samples
before the breath hold, at the end of the breath hold and at fixed interval...
Scientists open doors to diagnosis of emphysema
...rescent probe that essentially allows MMP12 activity in macrophages to be quantified by the amount of fluorescence they take up. Applying this test to samples
of lung cells from a mouse model of acute lung inflammation showed that MMP12 activity in macrophages was indeed increased.
Although the study was...
August 2009 Geology and GSA Today media highlights
...articles by the isotopic tracers of neodymium and strontium. They collected samples
of loess -- a natural eolian deposit of East Asia dust that has accumulated...- spanning northern China.
They analyzed the isotopic composition of the samples
and found that the natural background of East Asia dust is dominated by bin...
Study links virus to some cases of common skin cancer
The researchers examined tissue samples
from 58 people with squamous cell carcinoma (SCC),...s O. Hans Iwenofu and Sara B. Peters, examined DNA samples
from SCC tumors; from normal-appearing skin adjace...hwash. They found no viral DNA in any of the blood samples
from 57 patients. In all, 21 of 58 SCC patients, o...
Jet-propelled imaging for an ultrafast light source
... rapidly pulsed as SLAC's LCLS will be, the experiment demonstrated the jet technique's high potential for speeds and exposures that won't subject the samples
to radiation damage. Some of the patterns the researchers obtained come from nanocrystals just a few molecules on a side, with a width of about 100 bi...
Scientists discover Amazon river is 11 million years old
...g drilled near the mouth of the Amazon - one 2.5miles (4.5km) below sea level - which resulted in new sedimentological and paleontological analysis of samples
from the river sediment.
"River sediment records provide a unique insight into the palaeoclimate and geography of the hinterland," said Jorge Figu...
UBC researchers help push for standard DNA barcodes for plants
...ted from two DNA sites should help cut costs associated with sequencing and retrieving the correct information.
The researchers used 400 land plant samples
to test the two-site solution. In 72% of cases they were immediately able to determine the correct species of plant, and in the rest of the cases were...
Earliest animals lived in a lake environment, research shows
Now a UC Riverside-led team of researchers studying ancient rock samples
in South China has found that the first animal fossils in the paleontologic...aline lakes."
The researchers' work involved collecting hundreds of rock samples
from several localities in South China, carrying out mineralogical analysis...
Cancer's distinctive pattern of gene expression could aid early screening and prevention
... gene that is methylated in the majority of the broad group of cancers called non-Hodgkin's lymphoma. This methylated DLC1 is detectable in the plasma samples
of lymphoma patients, making it a good candidate for the screening, says Dr. Shi who also is looking for these types of biomarkers in breast cancer an...
Scientists closer to making implantable bone material, thanks to new research
...owth of different cell populations. They also used a nano-indenter and high resolution electron microscopy, which allowed the researchers to probe the samples
so that they could understand how stiff the bone-like materials were and what their structure was at a microscopic level.
DOE-funded research projects win 46 R&D 100 Awards for 2009
...TEAM Stage will make one of the world's most powerful electron microscopes even better by enabling atomic-scale imaging in 3-D. It holds and positions samples
inside electron microscopes with unprecedented stability, position-control accuracy and range of motion. (Jointly with Attocube Systems, FEI Company a...
In vitro antibody production enables HIV infection detection in window period -- key to safer blood
... containing immune potentiating agents promoted the synthesis and release of antibodies against HIV-1 prior to their detection in corresponding plasma samples
in a group of donors who would otherwise be classified as HIV-1 seronegative blood donors. The identification of techniques that can lead to detection...
Music is the engine of new U-M lab-on-a-chip device
...Mich.---Music, rather than electromechanical valves, can drive experimental samples
through a lab-on-a-chip in a new system developed at the University of Mich... a small system is the pneumatics---the mechanisms for moving chemicals and samples
around on the device."
The U-M researchers use sound waves to drive a un...
New discovery suggests trees evolved camouflage defense against long extinct predator
...ize, shape and colour, lacking any defence.
To prove that these defences were linked to the presence of moa the team compared Araliaceae leaves to samples
from a similar species of tree, P chathamicus, from the Chatham Islands, which are 800 kilometres east of New Zealand. Unlike New Zealand the islands ...
Penn-Wistar team gains insight into HIV vaccine failure
...niversity of Pennsylvania School of Medicine Department of Microbiology, Center for AIDS Research, and Wistar Institute Vaccine Center, analyzed blood samples
from 40 healthy participants in the phase I safety trial of the STEP HIV vaccine for immune response to Ad5 particles. The blood samples, which came f...
Early initiation of Arctic sea-ice formation
...delicately silicified diatoms belong to the genus Synedropsis . "We were astonished by this", said team member Richard Pearce of NOCS, who imaged the samples
using a scanning electron microscope at the NOCS: "Weakly silicified diatoms are preserved only under exceptional circumstances, so to find fossilised...
Reviews of microbial gene language published in special issue of Trends in Microbiology
...int out that Gene Ontology terms will be of great benefit to metagenomics efforts the sequencing of mixtures of multiple organisms from environmental samples
in helping define the functions of the many genes discovered by these initiatives. The Human Microbiome Project (HMP), for example, plans to extensiv...
Hush little baby... Linking genes, brain and behavior in children
...electroencephalography (EEG) recordings. When the children were 48 months old, their mothers completed questionnaires regarding their behavior and DNA samples
were taken from the children for analysis of the DRD4 gene.
The results reveal interesting relations among brain activity, behavior, and the DRD4 g...
New advance in revolutionary 'bullet fingerprinting' technique
...ingerprint sweat deposit. Using advanced surface imaging techniques, such as an Atomic Force Microscope, nanoscale observations of fingerprinted brass samples
can identify optimum conditions to promote the natural enhancement of the fingerprint, vastly improving their recovery rate. It has also proven that c...
Methane-eating microbes can use iron and manganese oxides to 'breathe'
...in today's (July 10) issue of Science .
of marine sediment taken 20 miles off the Californ...manganese oxide free, but live. She also incubated samples
that were sulfate free but contained iron oxide or...ected, but both the iron and manganese oxide-laced samples
showed activity, although less activity than the s...
2 Fred Hutchinson Cancer Research Center scientists receive Presidential Early Career Award
...ween nutrition and cancer prevention particularly how the interplay of genetics and nutrition can impact cancer risk. Analyzing blood, DNA and tissue samples
from large study populations, her work focuses on integrating genetic and molecular methods to better understand the role selenium, vitamin D, calcium...
Arctic climate under greenhouse conditions in the Late Cretaceous
...ed a 'palaeo-sediment trap' to reveal information about Late Cretaceous environmental conditions.
They find that the most informative sediment core samples
display a regular alternation of microscopically thin layers composed of two distinctly different diatom assemblages, reflecting seasonal changes. The...
UH team analyzes Hurricane Ike's effects on waterways, fish contamination
With this year's storm season under way, the UH engineering team's project is entering a new phase as participants collect and analyze fresh samples
from Galveston Bay and related waterways.
Cullen College of Engineering professor Hanadi Rifai, who has studied pollution in Houston-area bodies o...
Forsyth scientists suggest linkages between obesity and oral bacterial infection
...buting to some types of obesity," added Goodson.
Summary of Study
In order to measure the salivary bacterial populations of overweight women, samples
were collected from 313 women with a body mass index between 27 and 32 (classifying them as overweight). Using DNA analysis, the researchers measured ...
Faster, more cost-effective DNA test for crime scenes, disease diagnosis
... saving time and cutting costs. The new method also is more specific, accurately detecting DNA even in the presence of unfavorable PCR products in the samples
that may interfere with quantification results.
Iron and biological production in the high-latitude North Atlantic
...ers was very low, as was biological production, despite the presence of residual nitrate. Experimental addition of iron to bottles containing seawater samples
increased photosynthetic efficiency, chlorophyll concentrations, and growth of several types of phytoplankton, including the ubiquitous Emiliania huxl...