نتایج جستجو برای: threshold limit values
تعداد نتایج: 781966 فیلتر نتایج به سال:
We study the diversity of complex spatio-temporal patterns in the behavior of random synchronous asymmetric neural networks (RSANNs). Special attention is given to the impact of disordered threshold values on limit-cycle diversity and limit-cycle complexity in RSANNs which have 'normal' thresholds by default. Surprisingly, RSANNs exhibit only a small repertoire of rather complex limit-cycle pat...
Introduction: Clustering of human brain is a very useful tool for diagnosis, treatment, and tracking of brain tumors. There are several methods in this category in order to do this. In this study, modified balanced iterative reducing and clustering using hierarchies (m-BIRCH) was introduced for brain activation clustering. This algorithm has an appropriate speed and good scalability in dealing ...
Introduction & Objective: Determination of free silica to calculate threshold limit value is necessary. The purpose of this research was study of free silica in particulate emission in ambient air of stone crushing workshops in Azandarian area. Materials & Methods: 40 samples of respirable dust from workplace air were obtained in breathing zone of workers in different job stations. Samples...
conclusions the adoption of 85 dba as the permissible exposure limit has preserved hearing threshold level among participants at 3000 hz compared to those who embraced 90 dba. patients and methods this is an intervention study done on two automobile factories. there were 203 employees exposed to noise levels beyond the action level. hearing protection devices were distributed to reduce noise le...
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