2-0.5 mu m, which in turn, comprise crystalline domains and disordered regions. Comparison analysis of transmission electron microscopic data with the DSC and NMR results enabled to conclude that the disordered regions are predominantly comprised learn more of tie molecules with low degree of coiling, taut tie molecules, and a number of tight folds. This type of morphology best fits for compaction and sintering. Reactor powder morphology arising upon synthesis lab-scale and commercial UHMWPE on supported
catalysts is not so homogeneous, and consists of miscellaneous morphological units, such as spirals, flakes, secondary fibrils, interconnecting the subparticles, large and small lamellae in depending of the catalyst system. The density of disordered regions in these reactor powders is less than that in the particles of M-series. The tensile strength of the samples obtained by sintering of the M-powders is higher than the strength of the other ones by a factor 2.5, which makes them good precursors for orientation drawing. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 866-875, 2010″
“Respiratory muscles with dual respiratory and non-respiratory functions (e. g.
the pharyngeal and intercostal muscles) show greater suppression of activity in sleep than the diaphragm, a muscle almost entirely devoted to respiratory function. This sleep-related suppression of activity is most apparent in JNK-IN-8 supplier the tonic component of motor activity, which has functional implications of a more collapsible upper airspace in the case of pharyngeal muscles, and decreased functional residual capacity in the case of intercostal muscles. A major source of tonic drive to respiratory motoneurons originates from neurons intimately involved in states of brain arousal, i.e. neurons not classically involved in generating respiratory rhythm and pattern per se. The tonic drive to hypoglossal motoneurons, a respiratory motor Galardin solubility dmso pool with both respiratory and non-respiratory functions, is mediated principally by noradrenergic and
glutamatergic inputs, these constituting the essential components of the wakefulness stimulus. These tonic excitatory drives are opposed by tonic inhibitory glycinergic and gamma-amino butyric acid (GABA) inputs that constrain the level of respiratory-related motor activity, with the balance determining net motor tone. In sleep, the excitatory inputs are withdrawn and GABA release into the brainstem is increased, thus decreasing respiratory motor tone and predisposing susceptible individuals to hypoventilation and obstructive sleep apnoea.”
“Experiments with a Langmuir probe and optical emission spectroscopy are carried out in inductively coupled rf (13.56 MHz) Ar/N-2 discharges at three total pressures of 30, 60, and 110 mTorr, varying the Ar fractions from 50% to 95%.