the harvested walnut has a relatively high moisture content of 30% compared with the safe storage moisture content of 8%. one of the common means of reducing the moisture content is by drying. for design of drying and other aeration systems for agricultural products including walnuts, the relationship between the drop in pressure and airflow velocity must be known. an airflow resistance app...

Dry powder inhalers (DPIs) are widely and increasingly used in clinical practice because they represent a substantial advancement in inhalation technology. The effectiveness of a powdered drug to inhale depends on the inspiratory flow rate generated by the patient and on the turbulence produced by the intrinsic resistance of the DPI. While the inspiratory flow is variable with the patient's abi...

A variety of experimental approaches in human subjects and animal models established that the vestibular system contributes to regulation of respiration. In cats, the surgical elimination of labyrinthine signals produced changes in the spontaneous activity and posturally related responses of a number of respiratory muscles. However, these effects were complex and sometimes varied between muscle...

1. The role of syringeal muscles in song production, particularly in regulating airflow through the syrinx, was studied in singing brown thrashers (Toxostoma rufum). In nine individuals, muscle activity was recorded electromyographically together with bilateral syringeal airflow, subsyringeal air sac pressure, and vocal output. 2. Dorsal muscles, m. syringealis dorsalis (dS) and m. tracheolater...

As natural ventilation involves local and global interactions, the estimation of these interactions can be performed by many approaches. Such approaches, rather more experimental numerical than analytical, often require a great deal instrumentation equipment, which results in higher demands on project budget funding. The present work is devoted to comprehending concept, assess existing techniqu...

In addition to low-level windshear (below 1600 feet), low-level turbulence could also adversely affect arriving/departing aircraft at the airport. Turbulent airflow may occur in clear-air/non-rainy weather conditions, e.g. terrain effect at the Hong Kong International Airport (HKIA) or building’s disruptions at Haneda Airport (Tokyo International Airport) in Japan. Such airflow disturbances cou...

Carbon monoxide (CO) and carbon dioxide (CO2) emissions during a spontaneous heating event in a coal mine are important gases to monitor for detecting the spontaneous heating at an early stage. However, in underground coal mines, the CO and CO2 concentrations and their related fire ratios may be affected by mine ventilation. In this study, CO and CO2 emissions from spontaneous heating of a U.S....