In the refrigerator compressors, the suction mufflers are commonly used to reduce the notse propagated through the intake valve system. In order to optimize the muffler design, it is necessary to characterize the source characteristics, i.e., the source impedance and the strength, of the intake system. In this paper, assuming the intake system as one-port, linear, time-invariant one, the acoust...

background: malathion (mal) is a choice insecticide in the stored grain in different countries. the aim of the present study is to evaluate toxicological effects of 30-day intake of mal on the male reproductive system of wistar rats. methods: this research was ethically approved by the local authority at faculty of medicine, monastir, tunisia. three mal treated groups received 1 ml corn oil con...

Engine intake system leaks are a primary reason behind unsatisfactory operational and emission characteristics of turbocharged engines. In faulty conditions, the intake mass flow sensed by the mass flow sensor does not reach the combustion chamber, resulting in a less than required air fuel mass ratio. This may result in increased emissions along with unsatisfactory performance of exhaust gas r...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : this study aimed to investigate the associations between macro- and micronutrients received in the first, second, and third trimesters and risk for preeclampsia considering demographic and reproductive characteristics and physical activity. methods : in this prospective cohort study, data was collected by fill...