Phase Heterogeneity in Cholesterol-Containing Ternary Phospholipid Lamellar Phases.

Pseudo-ternary mixtures of lamellar phase phospholipids (DPPC and brain sphingomyelin with cholesterol) were studied below while comparing the influence of cholesterol content, temperature, and the presence of small quantities of vitamin D binding protein (DBP) or vitamin D receptor (VDR). The measurements, conducted by X-ray diffraction (XRD) and nuclear magnetic resonance (NMR), cover a range of cholesterol concentrations (20% mol. wt to 40% mol.

Data from multi year and multi radiation detector measurements of different radiation sources with environmental data.

The data described consists of radiation measurement outputs from several different detectors located in Abu Dhabi, UAE, for the duration of 30 November 2014 through 13 December 2016. This data could be useful for anyone studying radiation count rate or spectroscopic changes over a multi year period from various radiation sources and measurement systems. The outputs of the measurement systems include 1) counts per 20 min from a Geiger-Muller detector measuring Sr, 2) counts per 20 min from a Geiger-Muller detector measuring Tl, 3) radiation spectra per 30 min from a NaI detector measuring Co, 4) radiation spectra per 30 min from a NaI detector measuring Mn, 5) radiation spectra per 30 min from a liquid scintillation detector measuring Ra, 6) counts per 30 min from a liquid scintillation detector measuring C, and room pressure, temperature, and humidity data every 10 min.

Therapeutic vitamin delivery: Chemical and physical methods with future directions.

Vitamins are a diverse group of "life nourishing" molecules that are essential for proper childhood development, and for maintaining health throughout adulthood into old age. Vitamin supplementation is an important strategy for reducing the severe and chronic effects of malnutrition in subsets of the population of the developing world. Additionally, the precise role of many vitamins in certain conditions, including cancer and cardiovascular disease, remains an area of active research, although guidelines for vitamin supplementation in otherwise adequately nourished populations remain controversial.

Spatial dependence and mitigation of radiation damage by a line-focus mini-beam.

Recently, strategies to reduce primary radiation damage have been proposed which depend on focusing X-rays to dimensions smaller than the penetration depth of excited photoelectrons. For a line focus as used here the penetration depth is the maximum distance from the irradiated region along the X-ray polarization direction that the photoelectrons penetrate. Reported here are measurements of the penetration depth and distribution of photoelectron damage excited by 18.

One-dimensional hard x-ray field retrieval using a moveable structure.

We present a technique that allows measuring the field of an x-ray line focus using far-field intensity measurements only. One-dimensional phase retrieval with transverse translation diversity is used to recover a hard x-ray beam focused by a compound kinoform lens. The reconstruction is found to be in good agreement with independent knife-edge scan measurements taken at separated planes.