This study indicates that discriminating EV size by the current capsule scale is unreliable. Lowering the grading threshold improved the ability to discriminate EV size by CE. In the proper context, CE is an alternative to EGD to screen for EV.
Ovaries from di-oestrous rats were removed and placed in perifusion culture: 4-6 ovaries were cultured for 3 h with (1) no gonadotrophin; (2) tonic FSH (200 ng/ml); (3) tonic LH (30 ng/ml); (4) tonic FSH and tonic LH; (5) tonic FSH and hourly pulses of 40 ng LH/ml; or (6) tonic FSH and hourly pulses of 50 ng LH/ml. The total amount of LH administered was 3060 ng LH, regardless of mode of delivery. Perifusate was collected every 10 min and assayed for oestradiol-17 beta by RIA. The total amount of oestradiol-17 beta secreted was not altered by any treatment except when LH was administered in hourly pulses with an amplitude of 50 ng/ml; the total amount of oestradiol-17 beta secreted in 3 h was increased by 300% (P less than 0.05). Without gonadotrophic stimulation, oestradiol-17 beta was secreted at a constant rate (4.48 +/- 0.21 pg/mg 10 min-1). Tonic gonadotrophin stimulation did not alter this pattern. However, pulses of 50 ng LH/ml but not 40 ng LH/ml resulted in periodic increases in oestradiol-17 beta secretory rates. Thus, oestradiol-17 beta secretion is stimulated by LH pulses with the degree of stimulation dependent, in part, on the amplitude and/or the rate of change of the LH pulse.
Combined Heat and Power (CHP) plants have gained popularity in industrial and institutional applications due to their ability to recapture and repurpose wasted heat energy from the power generation process, resulting in significant energy savings and carbon emission reductions. However,
noise control considerations have become increasingly critical in retrofit CHP systems, particularly in healthcare facilities. Often, strict noise performance requirements must be met due to the proximity of residential communities and to ensure a comfortable healing environment for patients.This
technical paper explores critical noise control considerations for retrofit CHP systems in healthcare facilities, focusing on a case study from Hamilton Health Sciences, a healthcare network in Ontario, Canada. The paper examines the design challenges of upgrading the existing CHP plants across
three separate hospitals when addressing stringent sound performance, system ventilation, air tempering, and structural capacity limitations within a limited space. The paper also discusses the unique sound attenuation design solutions implemented to address these challenges.The case study
demonstrates the successful implementation of combining noise control design, ventilation design, and structural design into one integrated solution, specifically to overcome common design challenges in retrofit CHP systems.
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