Active phase coupling in electric fish: Behavioral control with microsecond precision

Heterogeneous catalysts, used in industry for the production of fuels and chemicals, are microporous solids characterized by a high internal surface area. The catalyticly active sites may occur at the surface of the bulk solid or of small crystallites deposited on a porous support. An example of the former case would be a zeolite, and of the latter, a supported metal catalyst. Since the activity and selectivity of a catalyst are known to be a function of surface composition and structure, it is highly desirable to characterize catalyst surfaces with atomic scale resolution. Where the active phase is dispersed on a support, it is also important to know the dispersion of the deposited phase, as well as its structural and compositional uniformity, the latter characteristics being particularly important in the case of multicomponent catalysts. Knowledge of the pore size and shape is also important, since these can influence the transport of reactants and products through a catalyst and the dynamics of catalyst deactivation.

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Swallow Pattern Generator Reconfiguration of the Respiratory Neural Network

Perspectives on Swallowing and Swallowing Disorders (Dysphagia) ◽

10.1044/sasd18.1.3 ◽

2009 ◽

Vol 18 (1) ◽

pp. 3-12

Author(s):

Andrea Vovka ◽

Paul W. Davenport ◽

Karen Wheeler-Hegland ◽

Kendall F. Morris ◽

Christine M. Sapienza ◽

...

Keyword(s):

Behavioral Control ◽

Upper Airway ◽

Pattern Generator ◽

Breathing Patterns ◽

Motor Patterns ◽

Control Assembly ◽

Pharyngeal Swallow ◽

Laryngeal Vestibule ◽

Lower Airways ◽

Swallow Apnea

Abstract When the nasal and oral passages converge and a bolus enters the pharynx, it is critical that breathing and swallow motor patterns become integrated to allow safe passage of the bolus through the pharynx. Breathing patterns must be reconfigured to inhibit inspiration, and upper airway muscle activity must be recruited and reconfigured to close the glottis and laryngeal vestibule, invert the epiglottis, and ultimately protect the lower airways. Failure to close and protect the glottal opening to the lower airways, or loss of the integration and coordination of swallow and breathing, increases the risk of penetration or aspiration. A neural swallow central pattern generator (CPG) controls the pharyngeal swallow phase and is located in the medulla. We propose that this swallow CPG is functionally organized in a holarchical behavioral control assembly (BCA) and is recruited with pharyngeal swallow. The swallow BCA holon reconfigures the respiratory CPG to produce the stereotypical swallow breathing pattern, consisting of swallow apnea during swallowing followed by prolongation of expiration following swallow. The timing of swallow apnea and the duration of expiration is a function of the presence of the bolus in the pharynx, size of the bolus, bolus consistency, breath cycle, ventilatory state and disease.

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Comparison of active phase labor between triplet, twin, and singleton gestations

Journal of the Society for Gynecologic Investigation ◽

10.1016/s1071-5576(00)00067-8 ◽

2000 ◽

Vol 7 (5) ◽

pp. 297-300 ◽

Cited By ~ 5

Author(s):

R Silver

Keyword(s):

Active Phase

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Personality, Cardiovascular Disease, and Cancer:

Zeitschrift für Gesundheitspsychologie ◽

10.1026/0943-8149.12.3.102 ◽

2004 ◽

Vol 12 (3) ◽

pp. 102-115 ◽

Cited By ~ 9

Author(s):

Manfred Amelang ◽

Petra Hasselbach ◽

Til Stürmer

Keyword(s):

Cardiovascular Disease ◽

Behavioral Control ◽

Smoking Behavior ◽

Type A Behavior ◽

Incremental Validity ◽

Personality Factors ◽

Emotional Lability ◽

Prevalent Disease ◽

Incident Cardiovascular Disease

Abstract. Ten years ago a sample of N = 5.133 male and female subjects (age 28-74) responded to questionnaires including scales for personality, life style, work stress as well as questions on prevalent disease. We now report on the follow-up regarding self-reported incidence of cardiovascular disease and cancer. During a mean follow-up of 10 years, 257 participants had died. Of those alive, N = 4.010 (82%) participated in the follow-up. Of these, 120 and 180 persons reported incident cardiovascular disease and cancer, respectively. The incidence of cardiovascular disease could be significantly predicted by the personality factors “Emotional Lability”, “Behavioral Control” and “Type-A-Behavior” as well as by the “Rationality/Antemotionality”-scale according to Grossarth-Maticek. After controlling for age, gender and smoking behavior only the significant effect of “Emotional Lability” remained and the predictors according to Grossarth-Maticek had no incremental validity. Cancer could not be predicted by any personality factors.

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