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situ in Biological News

Goulbourne earns NSF award to research heart stent sensors

... to a human artery equipped with a stent that has a unique type of in situ polymer strain-sensing device. According to the National Heart, Lung, ... pursue my research on electroactive polymer biosensors. I believe that in situ health monitoring realized through multifunctional sensors will arm ...

Young mineral scientists rock!

... and behaviour. At the same time, these predictions are tested by in situ measurements of many mineral properties at extreme temperatures and ... on a larger scale like mountain building; her analogue study with in situ experiments in the scanning electron microscope on the annealing of ...

New technique can be breakthrough for early cancer diagnosis

... at the Department of Genetics and Pathology devised a new technique, in situ PLA (in situ proximity ligation assay), that could detect communication between ...

Chromosomal problems affect nearly all human embryos

... resolution than previously, and hence identify more chromosomal abnormalities than has been possible using the current technique, fluorescent in situ hybridisation (FISH), which can only analyse ten of the approximately 32,000 genetic regions at the same time. "Until now, the majority of ...

NSF provides $3.4 million to study climatically important Agulhas Current

... array of instruments across the Agulhas Current and along an altimeter ground track, to obtain a three-year series of transport data. Using the in situ measurements gathered, the team will embark on the second phase, to correlate the along-track satellite altimeter data with measured transports to ...

New, less invasive genetic test greatly improves pregnancy rates in older women with poor prognosis

... Genomic Hybridisation (CGH) technique to count the chromosomes in each egg. Unlike conventional screening strategies, using the fluorescent in situ hybridisation (FISH) method, which allows less than half of the chromosomes of an embryonic cell to be examined, CGH enables the evaluation of the ...

ESHRE launches international study of polar body screening

... which enables scientists to look at all the chromosomes at the same time. This is, in theory, far more powerful than the method of fluorescent in situ hybridisation or FISH, which has been used thus far. "It is because we think this subject is so important," said Professor Geraedts, "that we have ...

MIT reels in RNA surprise with microbial ocean catch

... of the nature and diversity of these recently recognized regulatory switches. "Being able to track the dynamics of small RNA expression in situ provides insight into how microbes respond to environmental changes such as nutrient concentration and physical properties like light and pressure," ...

Cleansing toxic waste -- with vinegar

... longer 'bio-available' it doesn't present any risk to the surrounding ecosystem." Chromate chemicals have previously been successfully treated in situ in neutral Ph conditions, but this study is unique in that it concentrates on extremely alkaline conditions, which are potentially much more ...

New equation of state of seawater

... definition of seawater by 2010." While Practical Salinity will still be the salinity variable that is stored in national databases (much as in situ temperature is stored in these databases), it is the new Absolute Salinity that will be used in journal publications, numerical ocean models and ...

Tracking poultry litter phosphorus: Threat of accumulation?

... orthophosphate was also measured. The study concluded that phytate does not accumulate in soils, but rather, is most likely to be hydrolyzed in situ by microorganisms. Results of the study were published in the January-February issue of the Journal of Environmental Quality . Research in the ...

Research yields new clues to how we locate objects in space

... The authors have developed a novel ultrasound display one in which the ultrasound image will appear within the object being scanned (known as an in situ image). In other words, during an abdominal ultrasound, the ultrasound image will actually appear inside the abdomen, floating at the location of the ...

A BBVA Foundation project comes up with a system enabling detection of cetacean hearing loss

... has developed the world's first portable system for measuring cetacean hearing sensitivity. This audiogram measurement system facilitates in situ diagnosis of cetacean hearing loss, allowing assessments to be run on the survival chances of stranded animals without having to transport them to a ...

ESA satellites focusing on the Arctic

... long-sought transportation routes due to receding ice. However, it focuses on the need to carry out these activities in a sustainable manner. In situ research is difficult to carry out in Polar Regions because of the remoteness and harshness of the area. From their unique positions in space, ...

AGU journal highlights: Nov. 11, 2008

... it is difficult to monitor and quantify subsurface hydrologic fluxes at relevant scales. To bridge the gap between remotely sensed data and in situ point observations, Jayawickreme et al. use electrical resistivity techniques to monitor the influence of climate and vegetation on root-zone ...

Studying volcanoes with balloons

... alumni who are doing postdoctoral work at the University of Bristol in the United Kingdom. "The first flight was a success and made the first in situ measurements of gases in a volcanic plume using meteorological balloons," Durant reported in a talk at Michigan Tech. In addition to seeing ...

Bringing Martian samples to Earth -- preparations outlined in journal Astrobiology

... surface to maintain their integrity. This issue of Astrobiology also includes a special collection of papers that describe "Instruments for In situ Exploration of Planets," compiled by Guest Editors Max Coleman and Frank Grunthaner, from the Jet Propulsion Laboratory, California Institute of ...

Soil's carbon storage capacity investigated

... and disk-tillage was applied to a soil cropped under a common rotation in the region (oat + hairy vetch, corn, wheat, oat). From Year 3 to 6 in situ CO2-C fluxes were measured and C inputs from above and below ground plant residues were estimated. Results showed that in the semiarid ...

Centromeres cross over, a lot

... to see when a segment has switched chromatids. Jaco et al. have now addressed this challenge by using CO-FISH (chromosome orientation fluorescence in situ hybridization). After replication, the two new strands are digested away, leaving the two old strands. Because the strands are complementary in ...

Satellites take sustainability to new heights

... represent the equivalent of between 17 and 25 trillion oil barrels, although unlike conventional crude oil they need to be mined or extracted in situ rather than simply pumped to the surface and then specially treated before they can be transported via pipelines. As global oil reserves dwindle, ...

Surprising discovery from first large-scale analysis of biodiversity and biogeography of viruses

... the biodiversity and biogeography on a global scale. Microbialites are organosedimentary structures accreted by sediment trapping, binding and in situ precipitation due to the growth and metabolic activities of microorganisms. Stromatolites and thrombolites are morphological types of ...

Team probes mysteries of oceanic bacteria

... The new approach also has other potential applications, for example, one can now realistically consider using indigenous microbes as in situ biosensors, as well as monitor the activities of human-associated microbial communities much more comprehensively, DeLong said. Their technique, ...

Unexplored microbes hold incredible potential for science and industry

... needed to miniaturize scanning electron microscopy and other microscopic tools, develop biosensors, and to generally improve the ability to make in situ (in place) environmental measurements. In addition, more collaboration across scientific specialties and with industry is needed. Collaborations ...

'Genetic corridors' are next step to saving tigers

... living in harmony. WCS is committed to this mission because it is essential to the integrity of life on Earth. www.wcs.org Panthera saves in situ populations of the worlds 36 species of wild cats and the landscapes they inhabit in all regions of the world. We achieve this by collaborating with, ...

Elusive pancreatic stem cells found in adult mice

... and transplant them in diabetic patients and (2) composing a mix of factors able to activate beta cell progenitors to expand and differentiate in situ in patients with an absolute or relative deficiency in insulin, the researchers wrote. ...

How baby fish find a home

... of larval abilities to orientate as they mature. Typical research on larvae is assessed in laboratory experiments or in studies done in situ with the naked eye, but it does not provide information on whether or not larvae use cues to find a home, when in their life history they use them, ...

Research sheds light on the mechanics of gene transcription

... beyond polytene nuclei to common (but much smaller and more difficult to test) diploid cells, the researchers used a technique called fluorescence in situ hybridization, which allowed them to detect the location of specific DNA sequences along a chromosome in fixed cells. Looking at the location of ...

Media highlights in the Dec. 15 issue of Biophysical Journal

... cooperativity, and sarcomere. Volume 93, Issue 12, December 15, 2007 Effects of Sustained Length-Dependent Activation on In situ Cross-Bridge Dynamics in Rat Hearts James T Pearson, Monash University Mikiyasu Shirai, Hiroshima International University Hirotsugu ...

November GEOLOGY and GSA TODAY Media Highlights

... this conclusion may have interesting climatic perspectives. New insights into the genesis of Indian kimberlites from the Dharwar Craton via in situ Sr isotope analysis of groundmass perovskite Chad Paton et al., University of Melbourne, School of Earth Sciences, Victoria 3010, Australia. Pages ...

A roadmap for calibration and validation

... and ESA from 2 to 4 October, was structured around four main sessions: Cal/Val site characterisation & classification Satellite and in situ Cal/Val data access Methodology and guidelines for Cal/Val Harmonisation of quality information At the beginning of each session, the ...

Chloroplast f and m Thioredoxins Discovered in Nonphotosynthetic Tissues

... than the chloroplast by fusing the promoters of these genes to a visible reporter molecule, -glucuronidase (GUS), and by expression analysis, in situ hybridization, and immunological analysis. All the different types of plant TRXs are encoded in the nucleus. The f and m types were isolated ...

Using nanotubes to detect and repair cracks in aircraft wings, other structures

... associate professor in Rensselaers Department of Mechanical, Aerospace and Nuclear Engineering Details of the project are outlined in the paper In situ health monitoring and repair in composites using carbon nanotube additives, which was published online this week by Applied Physics Letters. ...

AGU journal highlights -- Sept. 6, 2007

... robotic probes throughout the Earth's oceans that measure salinity and temperature at depths down to 2 kilometers (1.2 miles), has collected in situ data of the world's oceans since 2001. To analyze the importance of Argo in collecting accurate oceanic information, Balmaseda et al. use the ...

Harmful Algal Blooms monitored from space in Chile

... satellite and the MODIS instrument onboard NASA's Aqua satellite and in situ water monitoring to monitor the Southern Ocean off the coast of Chile. ... EO data, alternative methods will be of considerable higher cost. With in situ measurements you cannot produce a gradient map as obtained with EO images. ...

A new portable biosensor detects traces of contaminants in food more quickly and cheaply

... allows a maximum of 100 micrograms per litre. Due to the ease of use of this sensor and its portability, the technique can be used in situ for quantitative analysis of the presence of atrazine, as well as that of other herbicides, in food and water samples outside the laboratory. The ...

Drug-resistant bacterial infections serious complication after corrective eye surgery

... keratitis after refractive surgery in patients with no known exposure to a healthcare facility, the first report of MRSA keratitis after a laser in situ keratomileusis (LASIK) enhancement, and the first reports of MRSA keratitis after prophylaxis with fourth generation fluoroquinolones. ...

Cancer vaccines -- Taking a jab at cancer by stimulating the immune system

... (HPV) (Types 6, 11, 16, 18) L1 Virus-Like Particle (VLP) Vaccine against Cervical Intraepithelial Neoplasia (CIN) grades 2/3 and Adenocarcinoma in situ (AIS): Abstract LB-187 Note: This is a placeholder abstract. Researchers will present follow-up efficacy data on an FDA-approved HPV vaccine. ...

Tissue engineering for craniofacial reconstruction

... control of scaffold morphology. HIPEs can be readily molded into the irregular shapes often required in craniofacial reconstruction and cured in situ to a rigid foam. They have demonstrated that emulsion templating can be used to generate rigid, biodegradable scaffolds with interconnected pores. ...

How T lymphocytes attack

... with the OVA antigen disappeared, after about a week. In the interval, the two-photon microscope (see box) made it possible to examine the scene in situ over the first 150 micrometres of the tumour. Each image provided a photograph of the different cell populations, blood vessels and collagen fibres ...
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(Date:8/27/2014)... mastodons, short-faced bears, giant ground sloths, saber-toothed cats and ... years ago at the end of the Pleistocene period. ... debated by scientists who, until recently, could only speculate ... UC Santa Barbara,s James Kennett, professor emeritus in the ... with Earth played a major role in the extinction. ...
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