منابع مشابه
Endobronchial one-way valves for treatment of persistent air leaks: a systematic review
Persistent air leak (PAL) is associated with significant morbidity and mortality, prolonged hospitalization and increased health-care costs. It can arise from a number of conditions, including pneumothorax, necrotizing infection, trauma, malignancies, procedural interventions and complications after thoracic surgery. Numerous therapeutic options, including noninvasive and invasive techniques, a...
متن کاملThe Gap Seal’s Influences on the Leakage and Clamping of Multi-way Directional Valves
Defects coming from processing and assembly inevitably bring geometric and concentricity error to the fitting gap between valve core and frame. To overcome this problem, grooving was proven to be the most simple and effective method to reduce the hydraulic clamping force, and widely used on cylinder valve cores. Theoretically unbalanced forces kept going smaller with the increase of pressure eq...
متن کاملUrethral Valves
Introduction Posterior urethral valves (PUVs) are a rare malformation in the subcollicular region of the male urethra. They cause varying obstructions of the lower urinary tract. The resulting secondary pathological conditions extend from mild—in part, clinically unmanifested—urinary dysfunctions to severe, bilateral changes in the upper urinary tract and associated renal failure. The literatur...
متن کاملElectronic Expansion Valves Electronic Expansion Valves Fitters Notes ( Part 8 )
Stephan Bachmann, Danfoss Refrigeration & Air Conditioning, Offenbach Lately we have received a lot of customer questions about using electronic expansion valves, so the eighth instalment of Fitters Notes is entirely dedicated to this topic. Optimal evaporator filling (even with large load variations), flexible MOP points, and using the highest possible evaporating temperature in order to incre...
متن کاملUse of endobronchial one-way valves reveals questions on etiology of spontaneous pneumothorax: report of three cases
Spontaneous pneumothoraces are believed to arise when air from the supplying airway exit via a ruptured visceral pleural bleb into the pleural cavity. Endobronchial one-way valves (EBVs) allow air exit (but not entry) from individual segmental airways. Systematic deployment of EBVs was applied to three patients with secondary spontaneous pneumothoraces and persistent airleak. In all cases, ball...
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ژورنال
عنوان ژورنال: Journal of Organization Design
سال: 2015
ISSN: 2245-408X
DOI: 10.7146/jod.20152