نتایج جستجو برای: equilibrium melting temperature
تعداد نتایج: 587044 فیلتر نتایج به سال:
DNA-gold nanoparticle assemblies have shown promise as an alternative technology to DNA microarrays for DNA detection and RNA profiling. Understanding the effect of DNA sequences on the melting temperature of the system is central to developing reliable detection technology. We studied the effects of DNA base-pairing defects, such as mismatches and deletions, on the melting temperature of DNA-n...
The melting temperature of solid hydrogen drops with pressure above ~65 GPa, suggesting that a liquid state might exist at low temperatures. It has also been suggested that this low-temperature liquid state might be non-molecular and metallic, although evidence for such behaviour is lacking. Here we report results for hydrogen at high pressures using ab initio methods, which include a descripti...
In This paper, the effect of size on melting temperature of metallic nanoparticles (Au, Pb and Bi) is theoretically simulated and explained. In this regard, the cause of difference in various experimental data is introduced, which is the difference between nanoparticles’ grain Gaussian distribution. This volume-depended model with the help of the Gaussian distribution can descri...
Two melting mechanisms are reproduced and quantified for superheating and melting of Al nanolayer irradiated by picoand femtosecond laser using the advanced phase-field approach coupled with mechanics and a two-temperature model. At heating rates Q 79:04 K/ps induced by picosecond laser, two-sided barrierless surface melting forms two solid-melt interfaces, which meet near the center of a sampl...
11 The temperature of the Earth’s core has significant implications in many areas of 12 geophysics, including applications to Earth’s heat flow, core composition, age of the 13 inner core, and energetics of the geodynamo. The temperature of the core at the inner 14 core boundary is equal to the melting temperature of the core’s Fe-rich alloy at the inner 15 core boundary pressure. This chapter ...
The synthesis and characterization of poly(1-methylinosinic acid) are described. Laser Raman spectra of poly (mII) were obtained as a function of temperature in D2O solution. Thermal melting profiles derived from the intensity variations of the 712, 795, 814, 986, 1333, 1509, 1550 and 1680 cm-1 bands indicate a cooperative melting temperature of 9 +/- 1 degree C. The low temperature form of pol...
چکیده ندارد.
A successful application is reported of the multivariate curve resolution alternating least-squares method (MCR-ALS) for the analysis of nucleic acid melting and salt-induced transitions. Under conditions where several structures co-exist in a conformational equilibrium, MCR-ALS analysis of the UV and circular dichroism (CD) spectra at different temperatures, ionic strength and oligonucleotide ...
sciencemag.org SCIENCE is a long-standing question in geology. Sarafian et al. present a clever set of experiments to determine the impact of small amounts of water on the melting temperature of mantle rock (see the Perspective by Asimow). This allowed them to reinterpret geophysical observations of melting in the mantle and revise estimates of mantle temperature upward. A hotter mantle has a m...
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