Results 211 to 220 of about 558,933 (248)
Solvent attenuation of dispersion interactions quantified in polar and nonpolar media using rigid CH-π balances. [PDF]
Chem SciLiu H +5 more
europepmc +1 more source
Artificial intelligence-assisted rectus femoris ultrasound vs. L3 computed tomography for sarcopenia assessment in oncology patients: establishing diagnostic cut-offs for muscle mass and quality. [PDF]
Front NutrLópez-Gómez JJ +11 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
2004
Attenuation and absorption alter the shape of a propagating pulse and its spectrum. The absorption of most materials, including tissues, follows a power-law dependence on frequency. A time causal model relates phase velocity dispersion to frequency-dependent absorption and describes these effects in both the time domain as a material impulse response ...
openaire +3 more sources
Attenuation and absorption alter the shape of a propagating pulse and its spectrum. The absorption of most materials, including tissues, follows a power-law dependence on frequency. A time causal model relates phase velocity dispersion to frequency-dependent absorption and describes these effects in both the time domain as a material impulse response ...
openaire +3 more sources
Hearing protector attenuation: Models of attenuation distributions
The Journal of the Acoustical Society of America, 2002Current hearing protector rating standards estimate the protection performance for a given frequency as the mean attenuation minus a multiple of the standard deviation. Distributions of real-ear attenuation at threshold data are fit with maximum likelihood estimation procedures using both normal and mixed-normal models.
John R. Franks +2 more
openaire +3 more sources
Attenuation and attenuation‐anisotropy in laminated rocks
SEG Technical Program Expanded Abstracts 2009, 2009Summary Elastic contrast in porous rock with fluid leads to irreversible seismic energy loss. This occurs in laminated intervals with individual layers much smaller than the seismic wavelength, even if the intrinsic attenuation in each single layer is zero.
Jack Dvorkin +2 more
openaire +2 more sources
2021
An impact attenuator is a device used to protect a vehicle from damage during a collision, thus preventing the risk of injury to the driver and passengers. Attenuators are used both on public roads and on racetracks as well as built into the vehicles themselves.
openaire +2 more sources
An impact attenuator is a device used to protect a vehicle from damage during a collision, thus preventing the risk of injury to the driver and passengers. Attenuators are used both on public roads and on racetracks as well as built into the vehicles themselves.
openaire +2 more sources
A Standard Attenuator and the Precise Measurement of Attenuation
IEEE Transactions on Instrumentation and Measurement, 1964An attenuator calibration system is described consisting of a waveguide-beyond-cutoff attenuator operating at 31.25 Mc and electronic equipment designed for parallel-substitution, series-substitution, and heterodyne measurements. Radio-frequency power is supplied by a crystal-controlled signal generator, stabilized so that variations in the power ...
F. P. Kelly, D. L. Hollway
openaire +2 more sources
Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression, 2002
In this review, we describe a variety of mechanisms that bacteria use to regulate transcription elongation in order to control gene expression in response to changes in their environment. Together, these mechanisms are known as attenuation and antitermination, and both involve controlling the formation of a transcription terminator structure in the RNA
Paul, Gollnick, Paul, Babitzke
openaire +2 more sources
In this review, we describe a variety of mechanisms that bacteria use to regulate transcription elongation in order to control gene expression in response to changes in their environment. Together, these mechanisms are known as attenuation and antitermination, and both involve controlling the formation of a transcription terminator structure in the RNA
Paul, Gollnick, Paul, Babitzke
openaire +2 more sources