Qspace login6/21/2023 However, complex tissue organization (e.g., crossing white matter (WM) fibers), nonmono-exponential diffusion decay (e.g., so-called fast and slow diffusion), and partial volume averaging effects between different tissues (e.g., contributions from gray matter (GM), WM, and cerebrospinal fluid (CSF) in a single voxel) will cause the diffusion to not be Gaussian. Where g ^ is the gradient direction unit vector, one may use the diffusion tensor to estimate the PDF directly. Although this study focused on data using the HYDI scheme, this computation approach may be applied to other diffusion sampling schemes including Cartesian diffusion spectrum imaging. In addition, it is less sensitive to the noise and q-space truncation effects than conventional approach. This new direct computation approach reduces HYDI data processing time and image artifacts arising from 3-D FT and regridding interpolation. Monte Carlo computer simulations were performed to investigate effects of noise, q-space truncation, and sampling interval on the measures. The HYDI method obtains diffusion-weighted measurements on concentric spheres in q-space. These methods were evaluated using both computer simulations and hybrid diffusion imaging (HYDI) measurements on a human brain. In this study, methods for estimating diffusion spectrum measures (the zero-displacement probability, the mean-squared displacement, and the orientation distribution function) directly from the q-space signals are described. QSpace Technologies LLC is a spin-off of the Russian Quantum Center, which in 2021 separated from the developer of equipment based on quantum cryptography QRate, and is a resident of Skolkovo (VEB.RF Group). It is the only company in Russia that develops a satellite system based on small spacecraft.The distribution of water diffusion in biological tissues may be estimated by a 3-D Fourier transform (FT) of diffusion-weighted measurements in q-space. Quantum key distribution (QKD) is a key technology in the field of quantum communications, which allows providing the highest possible level of information protection guaranteed by the laws of physics. QKD is already used in modern telecommunications to transmit confidential data, but today the key is transmitted via fiber optic cable, which limits it to a distance of 200 km, taking into account the requirement for generation speed. By the end of 2024, QSpace Technologies LLC intends to demonstrate a solution to the limited range problem by using the satellite as a "trusted node". Investments will be directed to the first phase of creating a small CubeSat satellite with a quantum key distribution system transmitter on board. In the future, the researchers plan to launch a small vehicle into space using the transmitter as a payload. The launch of the satellite is scheduled for 2023. The investor was Gazprombank, one of the largest commercial investors in quantum technologies in Russia. QSpace Technologies LLC, a developer of satellite and atmospheric systems in the field of quantum cryptography, announced the closing of the seed round in the amount of $1 million. Humidity Sensors/Temperature and Humidity Sensors.Photointerrupters - Slot Type - Transistor Output.Photointerrupters - Slot Type - Logic Output.
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