نتایج جستجو برای: gravimeter isn
تعداد نتایج: 859 فیلتر نتایج به سال:
The research of impacts between the Internet stock news (ISN) and the stock price movements emerges with the era of the popular usage of the Internet. In this paper, first, the ISN is empirically related to the stock returns based on the neural networks. Second, the relationship between the significant increases of the ISN volume and the significant changes of stock prices is addressed, also im...
Wallerian degeneration is a sequence of events in the distal stump of axotomized nerves. Despite large numbers of researches concentrating on WD, the biological mechanism still remains unclear. Hence we constructed a rat model with both motor and sensory nerves injury and then conducted a RNA-seq analysis. Here the rats were divided into the 4 following groups: normal motor nerves (NMN), injure...
In the gravity sensor of a superconducting gravimeter, a superconducting sphere as a test mass is levitated in a mag‐ netic field. Such a sensor is susceptible to applied horizontal as well as vertical acceleration, because the translational degrees of freedom of the mass are not perfectly limited to the vertical direction. In the case of the superconducting gravimeter CT #036 installed at Ishi...
We demonstrate the realization of a new scheme for cold atom gravimetry based on the use of double diffraction beamsplitters recently demonstrated in [1], where the use of two retro-reflected Raman beams allows symmetric diffraction in ±h̄keff momenta. Though in principle restricted to the case of zero Doppler shift, for which the two pairs of Raman beams are simultaneously resonant, we demonstr...
The objective of this paper is to present theories of scalar airborne gravimetry and to publish the related software to interested readers for free access. Numerical procedures and techniques are developed to compute velocities and accelerations from GPS-determined positions. A method based on the correlation analysis of raw gravity reading and vertical acceleration of aircraft is used to corre...
We present a 27-days long common view measurement of an absolute cold atom gravimeter (CAG) and relative iGrav superconducting gravimeter, which we use to calibrate the scale factor. This allowed us push CAG long-term stability down level 0.5~nm.s$^{-2}$. investigate impact duration on uncertainty in determination correlation factor show that it is limited about 3\textperthousand~by coloured no...
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