Experimental validation of the recovery effect in batteries for wearable sensors and healthcare devices discovering the existence of hidden time constants

Wearable sensors and healthcare devices use small lightweight batteries to power their typical operations of monitoring and tracking. It becomes absolutely vital to effectively utilise all the available battery charge for device longevity between charges. The electrochemical recovery effect enables the extraction of more power from the battery when implementing idle times in between use cycles, and has been used to develop various power management techniques. However, there is no evidence concerning the actual increase in available power that can be attained using the recovery effect. Also, this property cannot be generalised on all the battery chemistries since it is an innate phenomenon, relying on the anode/cathode material. Indeed recent developments suggest that recovery effect does not exist at all. This paper presents experimental results to verify the presence and level of the recovery effect in commonly used battery chemistries in wearable sensors and healthcare devices. The results have revealed that the recovery effect significantly does exist in certain batteries, and importantly we show that it is also comprised of two different time constants. This novel finding has important implications for the development of power management techniques that utilise the recovery effect with application in a large range of battery devices

The Meaning of Τηλυγετος in Homeric Poetry

Coughanowr E. N. The Meaning of Τηλυγετος in Homeric Poetry. In: L'antiquité classique, Tome 41, fasc. 1, 1972. pp. 218-221

The Plague in Livy and Thucydides

Malgré l'éloignement, il faut admettre la possibilité d'un lien entre la peste qui affligea Rome en 433-432 avant J.-C. (Tite-Live, IV, 25, 3-7) et celle qui sévit à Athènes en 430-429 (Thuc, II, 47 sqq.). Que la peste d'Athènes, au lieu d'être accidentelle, ait trouvé son origine dans une ruse de guerre (des Syracusains ?), c'est improbable mais ce n'est pas à exclure.Coughanowr E. N. The Plague in Livy and Thucydides. In: L'antiquité classique, Tome 54, 1985. pp. 152-158

Process syistems Analysis and Control

xvii.;ill.;566 hal.; 25 c

Philosophic Meaning in Oedipus Rex

Oedipe, bouleversé par la force de l'oracle delphique, se rend incapable de réfléchir raisonnement et à confronter son avenir avec sensibilité et prévoyance. En cherchant à éviter son destin, il manque de se conduire comme un homme sensible et humain avec sa famille, son peuple et son entourage. En subissant au terreur de l'oracle, Oedipe s'enfuit et devient un héros tragique, pas épique.Coughanowr Effie. Philosophic Meaning in Oedipus Rex. In: L'antiquité classique, Tome 66, 1997. pp. 55-74

Oxidation of Sulfur-Dioxide in Fog Droplets

88 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1956.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD