نتایج جستجو برای: discharge rate dr
تعداد نتایج: 1115640 فیلتر نتایج به سال:
BACKGROUND A lower heart rate is associated with better outcomes in patients with heart failure (HF) with reduced ejection fraction (EF). Less is known about this association in patients with HF with preserved ejection fraction (HFpEF). OBJECTIVES The aims of this study were to examine associations of discharge heart rate with outcomes in hospitalized patients with HFpEF. METHODS Of the 8,8...
The isotopic enrichment of copper ions in a positive column Cu-Ne discharge using optogalvanic excitation is analyzed with a rate equation model. With excitation at 510.6 nm, the fraction of the ions belonging to the 63-amu isotope of copper is enriched relative to the neutral abundance. Enrichment as large as 10% is calculated when the initial abundance of the neutral isotope is small (<0.1) a...
The discharge rate of coarse powders (mean particle size >500 pm) from bunkers without aeration can be described by both empirical relations and theoretical models. In the case of small particles the discharge rate is largely overestimated. As the powder dilates during flow a negative pressure gradient develops near the hopper outlet, inducing an air flow into the hopper. This extra drag force ...
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