نتایج جستجو برای: proportional
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This paper reviews the work of Keshava Munhy and collaborators in the area of proportional weirs. It brings forlh the lacuna that existed in the theory of weirs and focusses on why there was need a for a generalized theory of ,,"'(irs. It oullines the theorem of slope discharge continuity developed, emphasizing the importance of a datum or reference plane for every weir. It explains briefly the...
BACKGROUND Chronic obstructive pulmonary disease (COPD) encompasses a group of disorders characterised by the presence of incompletely reversible airflow obstruction with overlapping subsets of different phenotypes including chronic bronchitis, emphysema or asthma. The aim of this study was to determine the proportion of adult subjects aged >50 years within each phenotypic subgroup of COPD, def...
8 • Fluid Power Journal March/April 2003 The ability to achieve automated stepless control of pressure and flow rate in fluid power systems has undergone major development in the past twenty-five years. Electrohydraulic servo valves were invented in the late 1930s as a high tech, though high cost, solution to motion control needs. The mid-1980s saw the practical introduction of proportional val...
background : republic of azerbaijan is considered as an area with high prevalence of multi-drug resistant tuberculosis. uncontrolled travelling of azerbaijanis people to iran is the issue that needs to be considered as an important issue. methods : this study was conducted on 32 patients with tuberculosis from baku–nakhchivan and 48 patients from iran during 2012 to 2014. colonies of mycobacter...
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