the dependence of the lateral distribution of cherenkov light in simulated extensive air showers to the energy and the mass of the primary cosmic rays has been studied. it has been shown that a previous claim about mass independent proportionality of shower energy to the total cherenkov photon number is not valid in energies below eeas ~ 1014 ev. we have found that the core distance of the so c...

Coring is considered to provide the best estimate of concrete compressive strength in existing structures and commonly used calibrate Non-Destructive Moderately Destructive Techniques. Historical concrete, produced pre-code period until ‘20s, significantly differs from modern due lack standardization, improper rules thumbs aggregate shape (round, smooth often excessively large aggregates) propo...

This paper presents an experimental study on circular stirrup-confined concrete specimens under uniaxial and monotonic load. The effects of stirrup volume ratio, stirrup yield strength and concrete strength on damage evolution of stirrup-confined concrete were investigated. The experimental results showed that the strength and ductility of concrete are improved by appropriate arrangement of the...

In many steel reinforced concrete members, bars are not avoidable during core drilling and the presence of these have a direct impact on results this test. This study aims to examine effect test recycled aggregate lightweight (LWC) cores. For purpose, one mix was made with total number 48 cores were taken from slab having dimensions 1 m width, 1.5 length 0.15m thickness. Each has 90 mm in diame...

results the results showed that the average hr at resting, sitting (32℃ ± 0.1℃), and light workload (30℃ ± 0.1℃) were 78.52 ± 12.10, 69.74 ± 11.98, and 110.78 ± 17.91 beat/min, respectively. the average of ear canal temperature was estimated at 36.70℃ ± 0.36℃ for sitting workload and at 36.71℃ ± 0.27℃ light workload. conclusions the findings of this study illustrated that the average hr and the...

This paper investigates the possibility of recycled aggregate use in concrete slabs with hollow cores. The main variables considered experimental study for were percentage and core number. Six dimensions (1000 × 500 120) mm was fabricated tested. results showed that addition affected ultimate strength, ductility, energy absorption members. An increase to 25 % decreased strength capacity by 3.54...