نتایج جستجو برای: biological half
تعداد نتایج: 643486 فیلتر نتایج به سال:
In this paper we describe a method for the determination of protein concentration using Surface Enhanced Raman Resonance Scattering (SERRS) immunoassays. We use two different Raman active linkers, 4-aminothiophenol and 6-mercaptopurine, to bind to a high sensitivity SERS substrate and investigate the influence of varying concentrations of p53 and EGFR on the Raman spectra. Perturbations in the ...
Simultaneous vibration welding of 304 stainless steel was carried out with an eccentric circulating vibrator and a magnetic telescopic vibrator at subresonant (362 Hz and 59.3 Hz) and resonant (376 Hz and 60.9 Hz) frequencies. The experimental results indicate that the temperature gradient can be increased, accelerating nucleation and causing grain refinement during this process. During simulta...
Laser ablation-based nanoparticle synthesis in solution is rapidly becoming popular, particularly for potential biomedical and life science applications. This method promises one pot synthesis and concomitant bio-functionalization, is devoid of toxic chemicals, does not require complicated apparatus, can be combined with natural stabilizers, is directly biocompatible, and has high particle size...
We report the detection of intense emission from magnesium and iron in Mars’ atmosphere caused by a meteor shower following Comet Siding Spring’s close encounter with Mars. The observations weremade with the Imaging Ultraviolet Spectrograph, a remote sensing instrument on the Mars Atmosphere and Volatile EvolutioN spacecraft orbiting Mars. Ionized magnesium caused the brightest emission from th...
We have decomposed the broad Hα, Hβ and Hγ lines of 90 Active Galactic Nuclei (AGNs) into a superposition of a very broad and an intermediate Gaussian components (VBGC and IMGC) and discovered that the two Gaussian components evolve with FWHM of the whole emission lines. We suggest that the VBGC and the IMGC are produced in different emission regions, namely, Very Broad Line Region (VBLR) and I...
A spectre is haunting biology in America the spectre of Creationism. We scientists believed that this religious intruder had been fatally wounded in the aftermath of the Scopes trial. Sharing the ’fifties prestige of science with Our Friend, the Atom, the biology profession had, so we thought, nailed its coffin shut. But now, risen, garbed in the raiment of Intelligent Design, this poltergeist ...
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