We have examined the charge transfer efficiency (CTE) of WFPC2's CCDs near the end of mission as a function of background illumination. Internal lamps were used to flash the CCDs before or after external exposures of ! Cen to produce average background signals of 0–160 e. These signals span the natural sky backgrounds observed in ~99% of archived WFPC2 science images. Most of the stellar flux l...

The mismatch of thermal expansion and contraction between restorative materials and tooth may cause stresses at their interface, which may lead to microleakage. The present work compared the coefficient of thermal expansion (CTE) with the thermomechanical behavior of human and bovine teeth and determined if the CTE is a suitable parameter to describe tooth behavior. Fifteen human third molar an...

Zirconium tungstate (ZrW,OJ exhibits the unusual property of a negative coefficient of thermal expansion (CTB) over a Iwide range of temperature, from 0.3 to 1050 K. This property was reported about thirty years ago (l), but only recently were the structure of this compound solved, the low-temperature CTE measurement performed and a physical explanation for the negative CTE proposed (2). Zircon...

Crossed Testicular Ectopia (CTE), an extremely rare congenital anomaly, was first described by Lenhossek, the finding of an ectopic testis in an autopsy performed by his father (1). It is a deviation of testicular descent resulting in unilateral location of both testes (2). CTE poses a problem of diagnosis and treatment. The ethology of crossed testicular ectopic remains undefined but has been ...

Arctic warming is leading to substantial changes to permafrost including rapid degradation of ice and ice-rich coasts and riverbanks. In this study, we present and evaluate a high spatiotemporal resolution three-year time series of X-Band microwave satellite data from the TerraSAR-X (TSX) satellite to quantify cliff-top erosion (CTE) of an ice-rich permafrost riverbank in the central Lena Delta...

CONTEXT Chronic traumatic encephalopathy (CTE) is a rare progressive neurologic disorder that can manifest as a combination of cognitive, mood and behavioral, and neurologic symptoms. Despite clinically apparent symptoms, there is no imaging or other diagnostic test that can confirm diagnosis in living subjects. Diagnosis can only be confirmed postmortem by specific histopathologic features wit...

The objective of this paper was to predict the thermomechanical behavior of 2080 aluminum alloy reinforced with SiC particles using the Mori–Tanaka theory combined with the finite element method. The influences of particle volume fraction, stiffness, aspect ratio and orientation were examined in terms of effective Young’s modulus, Poisson’s ratio and coefficient of thermal expansion (CTE) of th...

We review the current topic in sports-related head injuries including acute subdural hematoma (ASDH), concussion, and chronic traumatic encephalopathy (CTE). Sports-related ASDH is a leading cause of death and severe morbidity in popular contact sports like American football in the USA and judo in Japan. It is thought that rotational acceleration is most likely to produce not only cerebral conc...