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A correlation between Bogue's equations and Taylor's procedure for the evaluati...

The crystalline composition of Portland cement clinker is commonly established by Bogue's equations, which are based on a series of assumptions that seldom apply to oilwell cements. This is probably due to the presence of additional oxides and phase reconversion upon cooling of the clinker from the calcination temperature. Important differences are therefore observed between the numerical values yielded by the ...

Effect of non-abrupt doping and interfacial profiles on the carrier sheet densi...

The results of an accurate theoretical study on the effects of non-abrupt doping and interfacial profiles on the electron sheet density in one-side modulation-doped wurtzite GaN/AlGaN single quantum wells at low temperatures are presented. We solve coupled Schrödinger and Poisson equations self-consistently via the finite difference method. By employing a proper discretization on a nonuniform grid and taking in...

Limitation of electron mobility in modulation-doped In0.53Ga0.47As/InP quantum ...

The low-temperature electron mobility is investigated here for electrons confined in modulation-doped In0.53Ga0.47As/InP single symmetric quantum wells. The subband structure calculation is developed via variational method, both Schrödinger and Poisson equations being solved simultaneously with adequate heterointerface matching conditions. With this in hands, the main electron scattering rates are computed, nam...

Multiple polyposis of the gallbladder. Diagnostic difficulties apropos of a case.

Aspiration cytology of the thyroid using a fine needle. Technical aspects.

Fine needle aspiration cytology is the diagnostic test of choice for evaluating thyroid nodules. It's an easy and inexpensive method with low mobility which allows a safe diagnosis in patients with goiter, a therapeutic approach in benign cystic lesions as well as an early diagnosis and therapeutic guidance in thyroid cancer. The authors report fine needle aspiration cytology technical aspects as well as its po...