BACKGROUND Hypercholesterolemia and sickle cell disease (SCD) impair endothelium-dependent vasodilation by dissimilar mechanisms. Hypercholesterolemia impairs vasodilation by a low-density lipoprotein (LDL)-dependent mechanism. SCD has been characterized as a chronic state of inflammation in which xanthine oxidase (XO) from ischemic tissues increases vascular superoxide anion (O2*-) generation....

This paper describes the planned tests and preliminary results obtained in the first field tests using OLPC’s XO laptop. The XO laptop mesh network is being evaluated to test its suitability to work in dense environments, where many laptops will be present and competing for the same gateway, and in sparse environments, where connectivity between pairs of laptops will be of foremount importance ...

XO/XY and XO/XY/XYY mosaic hermaphrodites were generated from crosses involving BALB/cWt males. The distribution of Y-bearing cells in the gonads of these mice was studied by in situ hybridisation using the Y-specific probe pY353B. XY cells were found to contribute to all cell lineages of the ovary including follicle cells. The proportion of XY follicle cells was not significantly different fro...

loss of hearing is a known problem in patients with chronic renal failure, occurring in 40-xo% of cases and being most often of the high frequency sensorineural type. we performed a study on 50 patients with this disease, including 20 who had undergone a successful kidney transplantation. our results show an 80% incidence of hearing loss in these patients and a chance of improvement in at least...

Let Xo and X, be two Banach spaces which are continuously embedded in a common Hausdort t topological vector space. An admissible operator for the pair (Xo, X,) is a linear operator whose domain contains the union of the two spaces and whose restrictions to Xi is a bounded operator on Xi ( i = 0 , 1). A space X is called an interpolation space for the pair (Xo, X,) if each admissible operator T...

This symposium was organized to present some aspects of current research pertaining to lung redox function. Focuses of the symposium were on roles of pulmonary endothelial NADPH oxidase, xanthine oxidase (XO)/xanthine dehydrogenase (XDH), heme oxygenase (HO), transplasma membrane electron transport (TPMET), and the zinc binding protein metallothionein (MT) in the propagation and/or protection o...

SIR,-In a recent review de Grouchy 1 compiles the following karyotypes described in true hermaphroditism: 46 XX, 46 XY, 46 XX/46 XY, 45 XO/46 XY, 46 XX/47 XXY, 46 XX/47 XXX, 46 XX/46 XY/45 XO, 46 XX/47 XXY/ 49 XXYYY, and 45 XO/46 X isoY/47 XY isoY. We have studied the chromosomes of a true hermaphrodite with a new mosaicism, 46 XX/46 XY/47 XXY, which might throw some light on the possible multi...

The One Laptop per Child (OLPC) program has sought to transform education by developing and distributing to low-income children around the world an inexpensive computer with an innovative interface and applications. This article investigates the implementation of OLPC in Birmingham, Alabama, where some 15,000 of the group’s XO laptops were distributed to all firstthrough fifth-grade public scho...

Predissociation spectra in the 2.6-3.3 μm region were observed for protonated chlorine nitrate and protonated nitric acid as well as some of their isotopomers (HXNO3, X ) H, D, 35Cl, 37Cl). Two protonated isomers of both ClONO2 and HNO3 were identified from the vibrational spectra. The lowest energy isomer was the ion-molecule complex NO2(HOX) formed by protonation of the XO group. The second i...

In certain extraembryonic tissues of normal female mouse conceptuses, X-chromosome-dosage compensation is achieved by preferential inactivation of the paternally derived X. Diploid parthenogenones have two maternally derived X chromosomes, hence this mechanism cannot operate. To examine whether this contributes to the inviability of parthenogenones, XO and XX parthenogenetic eggs were construct...