This paper presents a 5 bit charge-redistribution phase domain ADC (PhADC) implemented in 0.18 μm CMOS technology for low power FSK/PSK demodulation. An IQ-assisted conversion algorithm is proposed to avoid the need for an accurate linear combination of in-phase (I) and quadrature (Q) signals with various scaling factors in a conventional zerocrossing algorithm, thus eliminating the power consu...

Dynamic data redistribution is used to enhance the performance of an algorithm and to achieve data locality in parallel programs on distributed memory multi-computers. The data redistribution problem has been extensively studied. Previous results focus on reducing index computational cost, schedule computational cost, and message packing/unpacking cost. However, irregular data redistribution is...

We studied coherent beam combining in a specific laser cavity architecture in which two Ytterbium-doped fiber amplifiers are passively coupled using a homemade binary phase Dammann grating. Our experimental results show that coherent beam combining is robust against phase perturbation in such a laser cavity architecture when the operating point is sufficiently above the lasing threshold. We obs...

A new potential application of nanotechnology for mineral scale prevention in the oil and gas industry is presented. In current squeeze treatments, in which scale inhibitors are squeezed into wells to adsorb or precipitate onto rock surfaces for later release, a large proportion of the injected inhibitor does not adsorb and is therefore returned very quickly from the reservoir upon well re-star...

Effective cuttings transport and accurate drilling hydraulics prediction remain issues of concern during operations horizontal, extended reach multilateral wells. While several studies have adopted a two- or three-layered modelling approach to evaluate efficiency, they neglected the effect gas-liquid fluid flow pattern within annulus on transport. An experimental theoretical study was carried o...

The efficiency of gas transport to the free and upper troposphere in convective clouds is investigated in an axisymmetric dynamic cloud model with detailed microphysics. In particular, we examine the sensitivity of gas transport to the treatment of gas uptake by different ice hydrometeors. Two parameters are used to describe this uptake. The gas retention coefficient defines the fraction of dis...

KAO, C. Y ., AND M. J. SIEGMAN. Nature of electrolyte exchange in isolated uterine smooth muscle. Am. J. Physiol. 205(a): 674-680. Ig63.Data are presented to show the marked changes in contents of water, sodium, potassium, and chloride in isolated rabbit myometrial strips when these preparations are incubated in Krebs-bicarbonate solution. The changes are interpreted to be composed of an initia...