نتایج جستجو برای: proton range
تعداد نتایج: 727714 فیلتر نتایج به سال:
The TRIUMF Proton Irradiation Facility can cover an energy range from below 20 MeV to 500 MeV using two extracted proton beam lines which operate into the same experimental area. The range of proton intensities is ideal for single event effect testing and high enough for some radiation damage testing of components. Neutrons, pions and higher intensity protons are also available at TRIUMF. Keywo...
The speed of the flagellar rotary motor of Escherichia coli varies linearly with protonmotive force.
A protonmotive force (pmf) across the cell's inner membrane powers the flagellar rotary motor of Escherichia coli. Speed is known to be proportional to pmf when viscous loads are heavy. Here we show that speed also is proportional to pmf when viscous loads are light. Two motors on the same bacterium were monitored as the cell was slowly deenergized. The first motor rotated the entire cell body ...
The large interest in long-range proton transfer in biomolecules is triggered by its importance for many biochemical processes such as biological energy transduction and drug detoxification. Since long-range proton transfer occurs on a microsecond time scale, simulating this process on a molecular level is still a challenging task and not possible with standard simulation methods. In general, t...
Despite major progress in radiotherapy, exponential attenuation of initial photons due to the nature of their interaction with matter has remained as the most important challenge. Photons have no well-defined range and their doses are reduced exponentially. Therefore, tissues located before and after the tumors receive a significant dose. Today, new techniques based on proton and carbon charged...
The management of proton conductivity in the protic ionic liquid imidazolium bis(trifluoromethylsulfonyl)imide ([Im][TFSI]) is investigated via the use of quasi-elastic neutron scattering (QENS) and pulsed-field gradient NMR. The introduction of excess neutral imidazole to [Im][TFSI] leads to enhanced conductivity. We find that proton dynamics in [Im][TFSI] with excess imidazole are characteriz...
In this paper, we calculated the mass stopping power (in MeV cm2/g) and range (cm) of proton in one types body tissues (lymph), from 1 Kev to 200 energy range. They are using Bethe Ziegler equations, SRIM program (version 2013) (Vol. 3) data by considering tissue composed several elements, so atomic number (Z) weight (A) for component meaning. The calculation results show that equation gives be...
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