The purpose of this study was to evaluate the floor impact sound isolation systems in reinforced concrete constructions. The floor impact sounds were generated by the standard heavy-weight impact sources, a tyre drop tester and an impact ball. The noise and vibration from the impact sources were analyzed and the relationship between the sound levels and the subjective responses was investigated...

Histamine was administered to dogs by the intravenous route near the right atrium in doses of 9.6 to 19 y/Kg. body weight. It produced a severe drop in systemic blood pressure, negligible changes in heart rate and respiration, usually a fall in cardiac output and no change in left atrial or pulmonary artery wedge pressure. The pulmonary artery pressure showed an initial rise and then a fall fol...

Transverse aortic banding in mice is commonly used to produce pressure overload, but the resulting cardiac hypertrophy is variable and the actual load produced is unknown. The purposes of the study were to characterize peripheral blood flow in banded mice using noninvasive Doppler methods, investigate whether changes in flow could predict the amount of cardiac hypertrophy induced and validate t...

Do transitory economic shocks affect neonatal outcomes? I show that an unexpected, monthlong blackout in Tanzania caused a sharp but temporary drop in work hours for workers in electricity-dependent jobs. Using records from a maternity ward, I document a reduction in birth weights for children exposed in utero to the blackout, and an increase in the probability of low birth weight. The reductio...

Sand fences are widely applied to prevent soil erosion by wind in areas affected by desertification. Sand fences also provide a way to reduce the emission rate of dust particles, which is triggered mainly by the impacts of wind-blown sand grains onto the soil and affects the Earth's climate. Many different types of fence have been designed and their effects on the sediment transport dynamics st...

Аннотация: В статье анализируются социально-экономические последствия развития дропшиппинга – новой формы организации продаж, стремительно завоевывающей российский рынок. Дропшиппинг открывает огромные перспективы не только для простых людей, но и для российских производителей, которые при правильном использовании возможностей дропшиппинга могут с минимальными затратами получить прямой доступ к...

We examine giant graviton with magnetic flux q in type IIA pp-wave background and find that it can move away from the origin along x4 direction in target space satisfying a nontrivial relation Rx4 = −q. This constraint is also investigated in a system of N D0-branes and it is observed that x4 enters into fuzzy algebra as a fuzzy parameter. The nontrivial relation can be regarded as a complement...