Density functional theory (DFT) using semi-local functional approximations can describe many chemical properties to high accuracy, but in some cases large and even qualitative errors emerge. Some of these errors are ascribed to an unphysical interaction of each electron with itself, which is present as a result of the approximations made in the exchange-correlation functional. The Perdew-Zunger...

Training-induced neuronal activity develops in the mammalian limbic system during discriminative avoidance conditioning. This study explores behaviorally relevant changes in muscarinic ACh receptor binding in 52 rabbits that were trained to one of five stages of conditioned response acquisition. Sixteen naive and 10 animals yoked to criterion performance served as control cases. Upon reaching a...

OBJECTIVE Most prostate cancers originate from the prostatic peripheral zone (PZ). We tested the hypothesis that the stromal cells from PZ and transitional zone (TZ) have differential effects on the ability of tumorigenesis. METHODS Stromal cells isolated from the PZ and TZ of normal human prostates mixed with DU145 cells subcutaneously injected into athymic nude mice. The volume and weight o...

Arterial pressure at zero flow (Pz = 0) that is higher than venous pressure (Pv) in dynamic pressure-flow relations has been explained by the presence of an arteriolar Starling resistor (SR) mechanism (i.e., vascular waterfall) or the discharge of vascular capacitance. To determine which was predominant, I studied in vivo hind limbs of 18 anesthetized dogs in which femoral arteries were cannula...

Electrophysiological and morphological characteristics of neurons in perinuclear zone of supraoptic nucleus. J. Neurophysiol. 78: 2427-2437, 1997. Neurons in the perinuclear zone (PZ) of the supraoptic nucleus (SON) are thought to serve as interneurons and may mediate changes in neurohypophysial hormone release in response to physiological changes in blood pressure. However, the morphology and ...

El impacto negativo de la pandemia sobre las tasas infecciones controladas ha evidenciado necesidad reanudar aplicación recomendaciones los Proyectos Zero (PZ). En este artículo, en primer lugar, se realiza un análisis situación unidades cuidados intensivos España durante pandemia. A continuación presenta adaptación cada uno cuatro PZ y su grado cumplimiento riesgo que existan relacionadas con ...

We study the performance of Bacon-Shor codes, quantum subsystem codes which are well suited for applications to fault-tolerant quantum memory because the error syndrome can be extracted by performing two-qubit measurements. Assuming independent noise, we find the optimal block size in terms of the bit-flip error probability pX and the phase error probability pZ , and determine how the probabili...

Chemical absorption of CO2 into aqueous amine solutions using a nonstirred bubble column was experimentally investigated. The performance four different primary and secondary amines including monoethanolamine (MEA), piperazine (PZ), 2-piperidineethanol (2PE), homopiperazine (HPZ) were compared. effects initial concentration amine, the inlet mole fraction CO2, solution temperature on rate loadin...

[UMSt] www.math.uci.edu/ ̃mfried/paplist-cov/UMStory.html. Algebraic equations in separated variables: (*) f(x)−g(y) = 0. Defines a projective nonsingular algebraic curve Xf,g with two projections to the (Riemann sphere) z-line Pz = C ∪ {∞}: f : Px → Pz and g : Py → Pz. Two problems from the 60s (Davenport’s and Shinzel’s) solved by the monodromy method . I explain that and the associated Genus ...