Certificate for Two Shares of Preferred Capital Stock in Gove Motor Car Company, Detroit, Michigan

Certificate for 2 shares of preferred capital stock in Gove Motor Car Company, Detroit, Michigan to Hamilton K. Woodruff, June 13, 1921.

The Influence of Cerebral Blood Flow and Carbon Dioxide on Neuromuscular Responses During Environmental Stress

Although reductions in cerebral blood flow (CBF) may be implicated in the development of central fatigue during environmental stress, the contribution from hypocapnia-induced reductions in CBF versus reductions in CBF per se has yet to be isolated. The current research program examined the influence of CBF, with and without consequent hypocapnia, on neuromuscular responses during hypoxia and passive heat stress. To this end, neuromuscular responses, as indicated by motor evoked potentials (MEP), maximal M-wave (Mmax) and cortical voluntary activation (cVA) of the flexor carpi radialis muscle during isometric wrist flexion, was assessed in three separate projects: 1) hypocapnia, independent of concomitant reductions in CBF; 2) altered CBF during severe hypoxia and; 3) thermal hyperpnea-mediated reductions in CBF, independent of hypocapnia. All projects employed a custom-built dynamic end-tidal forcing system to control end-tidal PCO2 (PETCO2), independent of the prevailing environmental conditions, and cyclooxygenase inhibition using indomethacin (Indomethacin, 1.2 mg·Kg-1) to selectively reduce CBF (estimated using transcranial Doppler ultrasound) without changes in PETCO2. A primary finding of the present research program is that the excitability of the corticospinal tract is inherently sensitive to changes in PaCO2, as demonstrated by a 12% increase in MEP amplitude in response to moderate hypocapnia. Conversely, CBF mediated reductions in cerebral O2 delivery appear to decrease corticospinal excitability, as indicated by a 51-64% and 4% decrease in MEP amplitude in response to hypoxia and passive heat stress, respectively. The collective evidence from this research program suggests that impaired voluntary activation is associated with reductions in CBF; however, it must be noted that changes in cVA were not linearly correlated with changes in CBF. Therefore, other factors independent of CBF, such as increased perception of effort, distress or discomfort, may have contributed to the reductions in cVA. Despite the functional association between reductions in CBF and hypocapnia, both variables have distinct and independent influence on the neuromuscular system. Therefore, future studies should control or acknowledge the separate mechanistic influence of these two factors.

El motor de inducción con factor de potencia unitario [por] Tomás Morales Quiñones

Tesis (Maestría en Ciencias de la Ingeniería Eléctrica con Especialidad en Potencia) U.A.N.L.

Técnicas de control basadas en pasividad aplicadas a un motor de inducción [por] María del Carmen Pacheco Arteaga

Tesis (Maestría en Ciencias en Ingeniería Eléctrica con Especialidad en Control) U.A.N.L.

El motor de inducción con factor de potencia unitario (por) Luis Manuel Martínez Villarreal

Tesis (Maestría en Ciencias de la Ingeniería Eléctrica, con especialidad en Potencia) U.A.N.L.

El motor de inducción con factor de potencia unitario [por] Juan Diego Garza González

Tesis (Maestría en Ciencias de Ingeniería Eléctrica, con especialidad en Control) U.A.N.L.

Diseño de controladores para una clase de sistemas no lineales, aplicación al motor a pasos de magneto permanente

Tesis ( Maestro en Ciencias de la Ingeniería Eléctrica con Especialidad en Control ) U.A.N.L.

Diseño de un control Backstepping para un motor de pasos

Tesis (Maestro en Ciencias de la Ingeniería con Especialidad en Control Automático) U.A.N.L.

Diseño de la geometría y caracterización de un motor híbrido de reluctancia autoconmutado.

Tesis (Maestría en Ciencias de la Ingeniería con Orientación en Energías Térmica y Renovable) UANL, 2013.

Control directo del par de un motor de inducción usando un convertidor multinivel.

Tesis (Maestría en Ciencias de la Ingeniería Eléctrica con Especialidad en Potencia Eléctrica) UANL, 2013.

Intrahemispheric dysfunction in primary motor cortex without corpus callosum: a transcranial magnetic stimulation study

Affiliation: Département de Psychologie, Université de Montréal