Low Earth Orbit (LEO) satellites are used for public networking and for scientific purposes. Communication via satellite begins when the satellite is positioned in its orbital position. Ground stations can communicate with LEO satellites only when the satellite is in their visibility region. The duration of the visibility and the communication vary for each LEO satellite pass over the station, ...

A change in brand suppliers of heparin at our institution resulted in a number of anecdotal reports of possible differences in potency. Both products are marketed as heparin sodium extracted from porcine intestinal mucosa. Heparin Leo is 1000 international units (British Pharmacopeia) per ml. while Hepalean is 10,000 United States Pharmacopeia (U.S.P) units per ml. Perfusion records were retros...

Low-Earth-Orbit satellite access network (LEO-SAN) can realize real-time and three-dimensional broadband on the earth anywhere any time. It has become a major development trend of Internet mobile communication networks, attracted more attention research from academia industry. LEO satellites achieve global coverage through giant constellations. Compared with medium- high-orbit satellites, have ...

We present a spectroscopic study of Leo V, a recently discovered satellite of the Milky Way (MW). From stellar spectra obtained with the MMT/Hectochelle spectrograph we identify seven likely members of Leo V. Five cluster near the Leo V center (R < 3) and have velocity dispersion 2.4 −1.4 km s. The other two likely members lie near each other but far from the center (R ∼ 13 ∼ 700 pc) and inflat...

The aim of this study was to investigate the chemical constituents of Lindera erythrocarpa essential oil (LEO) by gas chromatography-mass spectrometry and evaluate their inhibitory effect on the expression of pro-inflammatory mediators in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Fifteen compounds, accounting for 63.7 % of the composition of LEO, were identified. The main compounds we...

∆-1-Piperideine-6-carboxylate dehydrogenase, a new enzyme that forms α-aminoadipate in Streptomyces clavuligerus and other cephamycin C-producing actinomycetes Juan L. de la FUENTE*, Angel RUMBERO†, Juan F. MARTI;N*‡ and Paloma LIRAS*‡ *Area of Microbiology, Faculty of Biology, University of Leo! n, 24071 Leo! n, Spain, †Department of Organic Chemistry, Autonomous University of Madrid, 28049 Ca...

User terminals for Communications-On-The-Move (COTM) systems and Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) satellite ground terminals require antennas with high gain and steerable beams. LEO cubesats offer unprecedented opportunities for scientific discoveries as well as commercial space adventures. Internet is provided to aeroplanes, ships and defence and other vehicles by COTM system...