نتایج جستجو برای: magnetotactic bacteria
تعداد نتایج: 180391 فیلتر نتایج به سال:
The synthetic production of monodisperse single magnetic domain nanoparticles at ambient temperature is challenging. In nature, magnetosomes--membrane-bound magnetic nanocrystals with unprecedented magnetic properties--can be biomineralized by magnetotactic bacteria. However, these microbes are difficult to handle. Expression of the underlying biosynthetic pathway from these fastidious microorg...
Bacterial magnetic nanoparticles have great useful potential in biotechnological and biomedical applications. In this study, a liquid growth medium was modified for cultivation a fastidious magnetotactic bacterium that has been isolated from Anzali lagoon, Iran in our previous research. These modifications include change in vitamin, mineral, carbon sources and etcetera. In our experience, the s...
A technique for high spatial resolution three dimensional reconstruction from STEM HAADF images using electron tomography is presented. ‘Z-contrast’ images are shown to be ideal projections for tomography and examples are shown from nanostructured catalysts and magnetotactic bacteria crystallites. Results prove that accurate reconstruction is possible of both internal positions and exterior sha...
The near-surface environment of Mars is a challenging environment for microorganisms to survive. Yet, resources such as perchlorates and hydrogen peroxide-water mixtures are available that could provide supportive tools for putative Martian life. Here, we focus on the useful properties of perchlorates such as hygroscopicity and the suppression of the freezing point of water, and point to perchl...
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