in this research the effect of randomly reinforced soil and soil cement with different percent of cement and fiber and different length of fiber was investigated. samples were prepared according to the maximum dry unit weight and optimum water content due to the corresponding compaction curves. compressive and tensile strength were conducted on samples for different curing times. regression equ...

We have investigated the Raman gain for different pump wavelengths and maximum gain is achieved for pump wavelength of 1451.2 nm for the input signal source at 1550 nm. Also the effect of both pump power and Raman fiber length on gain saturation in fiber Raman amplifiers(FRAs) was studied without using any booster before Raman fiber. We have numerically simulated the gain of a FRA for different...

We have analyzed the binding of adenovirus (Ad) serotypes from subgroups B, C, and D through fiber-virus and fiber-fiber cross-competition experiments. Since viruses in these distinct subgroups display markedly different tropisms, it was unexpected that the subgroup C viruses Ad2 and 5 and the subgroup D virus Ad9 cross-competed for the same cellular fiber receptor. The subgroup B serotype Ad3 ...

Single fibers from the tibialis anterior muscle of Rana temporaria at 0.8-3.8 degrees C were subjected to long tetani lasting up to 8 s. Stretch of the fiber early in the tetanus caused an enhancement of force above the isometric control level which decayed only slowly and stayed higher throughout the contraction. This residual enhancement was uninfluenced by velocity of stretch and occurred on...

The article presents fabrication and luminescent properties of poly(methyl methacrylate) (PMMA) fiber doped by Oxazine 170 perchlorate. The bright fluorescence of polymeric fiber (at molar fluorescent organic dye concentration 4.3 × 10−5) was characterized in terms of spectrum and signal attenuation vs. the fiber length. The significant changes in fluorescence spectrum (λmax red shift average s...

Effects of decreasing stimulation frequency on length-force characteristics were determined for rat medial gastrocnemius muscle. The peripheral nerve was stimulated supramaximally with a succession of twitch and frequencies of 100, 50, 40, 30, and 15 Hz. Active peak tetanic and twitch forces and active muscle geometry were analyzed. Optimal muscle length and active slack length shifted signific...

where ~n is the fiber vector with unit length and the preferred fiber direction and κ describes the dispersion of the fiber orientations around the preferred fiber direction. The Macaulay brackets 〈·〉 take into account that the fibers contribute during tension only. The mechanical properties are derived from combining mechanical and structural properties at the tissue and cellular level obtaine...

We report on generation of 850fs mode-locked pulses at 1065nm in a completely fiber integrated format. The figure-of-eight, fiber laser source incorporates anomalous dispersion compensation by using a holey fiber and a short length, high gain, double-clad Yb-fiber amplifier.

Functional properties of the diaphragm are mediated by muscle structure. Modeling of force transmission necessitates a precise knowledge of muscle fiber architecture. Because the diaphragm experiences loads both along and transverse to the long axes of its muscle fibers in vivo, the mechanism of force transmission may be more complex than in other skeletal muscles that are loaded uniaxially alo...