This work presents collaboration between electronics industry and University aimed to develop novel power cycling methodology combined with IR thermography for quality and reliability studies of microelectronic assemblies. For this purpose an array of programmable Thermo Electric Converters (TEC) was designed and constructed [1]. The array provides possibility of introduction of controlled anis...

Introduction This module is the seventh in a series of Extension materials designed to provide Extension agents, Certified Crop Advisers (CCAs), consultants, and producers with pertinent information on nutrient management issues. To make the learning ‘active,’ and to provide credits to CCAs, a quiz accompanies this module. In addition, realizing that there are many other good information source...

0026-2714/$ see front matter 2011 Elsevier Ltd. A doi:10.1016/j.microrel.2011.08.017 ⇑ Corresponding author at: STMicroelectronics, 16 7155, 37071 Tours Cedex 2, France. Tel.: +33 (0)2 47 01 34. E-mail address: [email protected] (S. Jacqu In this paper, a physical model is proposed to estimate the TRIAC solder joint fatigue during power cycling. The lifetime prediction is based on the fo...

Copyright © International Union of Crystallography Author(s) of this paper may load this reprint on their own web site or institutional repository provided that this cover page is retained. Republication of this article or its storage in electronic databases other than as specified above is not permitted without prior permission in writing from the IUCr. For further information see http://journ...

In off-grid wind energy systems batteries often undergo frequent charge discharge cycles, which reduce battery service life. In addition, due to motor start and other high ‘inrush current’ loads batteries can also undergo high rates of discharge which also degrade battery life. In this paper, a superconducting magnetic energy storage and battery hybrid energy storage system is proposed which is...

purpose the aim of this study was to investigate the relation between anthropometric variables and total race time including split times in 184 recreational male ironman triathletes. methods body mass, body height, body mass index, lengths and circumferences of imbs, thicknesses of skin-folds, sum of skin-fold thicknesses, and percent body fat were related to total race time including split tim...

The Arrhenius plot for 39At released uring step heating of a sample containing a distribution of diffusion domains will depart from a straight line in ways that depend on the domain size distribution and the heating schedule used to extract he 39At. In a new series of experiments we make use of the heating schedule effect to confirm the multidomain nature of several alkali feldspar samples. We ...

The paper proposes a study of the phenomenology driving the ageing mechanisms of electrochemical double layer supercapacitors (SCs) during their most common operating conditions. In particular, the paper focuses on the so-called life endurance (LE) and power cycling (PC) stresses. The paper first provides a description of the variables governing the SC behaviour at the microscopic scale (i.e., ...

A purely arithmetical model of early naked-eye astronomy is developed. The astronomical origin of the Mayan Calendar (the 260-day Tzolk’in, the 365-day Haab’, the 3276-day Kawil-direction-color cycle and the 1872000-day Long Count Calendar) is demonstrated and the position of the Calendar Round at the mythical date of creation 13(0).0.0.0.0 4 Ahau 8 Cumku is calculated. Evidence shows that this...