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The density of polydioctylfluorene is measured by using the process of ultraviolet photoelectron spectroscopy. [2] Chain stiffness is also prominent in PFO, because of this it is predicted that the molecular weight is a factor of 2.7 lower than polystyrene, which can produce an approximation of 190 repeat units in a standard PFO chain. [3]
After testing an additional 44 deer near Clark's Marsh, MDHHS identified a relationship between PFOS detections in deer liver and the deer's distance from Clark's Marsh. The Michigan DNR estimated a 3-mile area as the expected travel range of white-tailed deer.
Perfluorooctanoic acid (PFOA; conjugate base perfluorooctanoate; also known colloquially as C8, for its 8-carbon chain structure) is a perfluorinated carboxylic acid produced and used worldwide as an industrial surfactant in chemical processes and as a material feedstock.
Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is a chemical compound having an eight-carbon fluorocarbon chain and a sulfonic acid functional group, and thus it is a perfluorosulfonic acid and a perfluoroalkyl substance (PFAS).
Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.Some flow is a normal condition both pre-birth and immediately post-birth via the foramen ovale; however, when this does not naturally close after birth it is referred to as a patent (open) foramen ovale (PFO).
A balloon atrial septostomy is performed with a balloon catheter, which is inserted into a patent foramen ovale (PFO), or atrial septal defect (ASD) and inflated to enlarge the opening in the atrial septum; this creates a shunt which allows a larger amount of oxygenated ("red") blood to enter the systemic circulation.
Patent foramen ovale (PFO) Possibility of venous gas bubbles shunting into arterial circulation and causing emboli Otherwise low-risk venous gas bubbles formed during decompression may shunt through PFO during anomalous pressure differential episode such as coughing, Valsalva manoeuver, or exertion while holding the breath.
The consumption of a collation originally derives from the rule dating from the mid-6th century A.D. in Benedictine monasteries, that the usual evening meal was to be followed by the reading of excerpts from Collationes patrum in Scetica eremo [6] written by John Cassian in around 420 A.D. [7] However, according to the Rule of Saint Benedict ...