It has been known for many years that a nonlinear phase shift can occur with non-phase-matched second-harmonic generation in particular and with parametric processes in general.1·2 Frequently it is an undesirable factor that leads to instabilities in parametric oscillators. Such a nonlinear phase shift has been measured experimentally in bulk KTP at 1.06 11-m with Z-scan techniques, 3 which mea...

The aphid parasitoid Aphidius rhopalosiphi is the most abundant species of Aphidiinae in cereal fields in northern Europe. Although the larval morphology of other Aphidiinae has been described, the morphology and immature development of A. rhopalosiphi remain unknown. Our goal is to relate growth and larval developmental stages to morphological changes during parasitoid development, using light...

Fachbereich Chemie der Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-6750 Kaiserslautern Z. Naturforsch. 42b, 195-202 (1987); received August 18/October 17, 1986 8-Azapurines, Allopurinol, Copper(II) Complexes, X-Ray The reaction of 8-azaand 7-deaza-8-aza-purines with Cu : + cations in acid solution has been studied. At a pH value of 2, the 8-azaadenine complex [Cu(H20)4(AAdH)2](N03)2...

Twig beetles in the genus Pityophthorus Eichhoff are known to be associated with the pitch canker pathogen, Fusarium circinatum, in California. Phoresy of the pathogen on these species has been reported to occur when insects emerge from diseased branches and when they infest disease-free, cut branch tips. To demonstrate that twig beetles can vector the pathogen, studies of phoresy and transmiss...

Nitrogen-14 and nitrogen-15 nuclear magnetic resonance (NMR) spectra were recorded for freshly dissected buds of Picea glauca and for buds grown for 3, 6 and 9 weeks on shoot-forming medium. Resonances for Glu (and other aNH2 groups), Pro, Ala, and the side chain groups in Gin, Arg, Om, and 'y-aminobutyric acid could be detected in in vivo 15N NMR spectra. Peaks for aamino groups, Pro, N03and N...

BACKGROUND Reports from drug utilization reviews are important tools employed in the assessment of healthcare practices. The objective of this study was to evaluate drug utilization patterns among elderly hospitalized patients on poly-pharmacy regimens in Pakistan. METHODS A descriptive, non-experimental, cross-sectional study was carried out from December 2015 to March 2016 in six tertiary-c...

The v.inetics and stoichiometry of the oxidation of human and rat oxyhemoglobin (02Hb) by propylene glycol dinitrate CGDN) have been investigated in vitro in both hemolysate and in intact red blood cell preparations. In hemolysate fractions from both these species, the rate constant for oxidation is nearly constant between pH 7-0 and 9-0, but it increases dramatically at lower pH values. The re...

^ d jw0j (w0) + ^ d jw1j (w1) 2 + E(jwj + 1) = d 0 (w0) + d 0 (w1) 2 so d 0 obeys the average law (without conservation). Proof.[of Theorem 19] Note the d 0 constructed in Theorem 18 is generally not conservative. We will parallel Theorem 4, by constructing a slothful two-sided quasipolynomially precise cover. The construction of a conservative cover from a slothful cover preserves two-sided qu...

An experimentally-based modelling technique was applied to describe quantitatively the uptake, translocation, storage, and assimilation of N03" and H2P04 over a 9 d period in mid-vegetative growth of sandcultured castor bean [Ricinus communis L.) which was fed 12 mM NO3 and either 0.5 or a severely limiting 0.005 mM H2PO4 . Model calculations were based on increments or losses of NO3 and reduce...

The reactive nitrogen species (RNS) nitric oxide (NO), nitroxyl anion (N0‘) and \ nitrosonium cation (NO+), modulate a myriad of biological processes. The microsomal haem oxygenases (HO-1, HO-2 and HO-3) oxidatively catabolise haem to bilirubin, carbon monoxide (CO) and ferrous iron (Fe2+). Sensitivity of the inducible isoform (HO-1) to a variety of inducers has identified HO-1 as an effective ...