11,391 research outputs found
First Complete Genome Sequence of Corynebacterium riegelii.
Here, we report the first complete genome sequence of Corynebacterium riegelii strain PUDD_83A45, isolated from the urine of a patient with urinary tract infection. The genome measured 2.56Â Mb and contained no plasmid
Draft Genome Sequence of Mycobacterium heckeshornense Strain RLE.
We report here the draft genome sequence of Mycobacterium heckeshornense strain RLE isolated from a sputum sample from a patient with shortness of breath. This is the first draft genome sequence of M. heckeshornense
Draft Genome Sequence of Mycobacterium heraklionense Strain Davo.
We report the draft genome sequence of Mycobacterium heraklionense strain Davo, isolated from a fine-needle aspirate of a right-ankle soft-tissue mass. This is the first draft genome sequence of Mycobacterium heraklionense, a nonpigmented rapidly growing mycobacterium
First Draft Genome Sequences of Neisseria sp. Strain 83E34 and Neisseria sp. Strain 74A18, Previously Identified as CDC Eugonic Fermenter 4b Species.
We report the first draft genome sequences of two isolates previously classified as CDC EF-4b species, Neisseria sp. 83E34 and Neisseria sp. 74A18. Both strains were isolated from patients with animal bites and likely constitute novel genomospecies with average nucleotide identities of <95% to other sequenced strains
Two-dimensional quasineutral description of particles and fields above discrete auroral arcs
Stationary hot and cool particle distributions in the auroral magnetosphere are modelled using adiabatic assumptions of particle motion in the presence of broad-scale electrostatic potential structure. The study has identified geometrical restrictions on the type of broadscale potential structure which can be supported by a multispecies plasma having specified sources and energies. Without energization of cool thermal ionospheric electrons, a substantial parallel potential drop cannot be supported down to altitudes of 2000 km or less. Observed upward-directed field-aligned currents must be closed by return currents along field lines which support little net potential drop. In such regions the plasma density appears significantly enhanced. Model details agree well with recent broad-scale implications of satellite observations
On the structures and mapping of auroral electrostatic potentials
The mapping of magnetospheric and ionospheric electric fields in a kinetic model of magnetospheric-ionospheric electrodynamic coupling proposed for the aurora is examined. One feature is the generalization of the kinetic current-potential relationship to the return current region (identified as a region where the parallel drop from magnetosphere to ionosphere is positive); such a return current always exists unless the ionosphere is electrically charged to grossly unphysical values. A coherent phenomenological picture of both the low energy return current and the high energy precipitation of an inverted-V is given. The mapping between magnetospheric and ionospheric electric fields is phrased in terms of a Green's function which acts as a filter, emphasizing magnetospheric latitudinal spatial scales of order (when mapped to the ionosphere) 50 to 150 km. This same length, when multiplied by electric fields just above the ionosphere, sets the scale for potential drops between the ionosphere and equatorial magnetosphere
Studies in upper and lower atmosphere coupling
The theoretical and data-analytic work on upper and lower atmosphere coupling performed under a NASA Headquarters contract during the period April 1978 to March 1979 are summarized. As such, this report is primarily devoted to an overview of various studies published and to be published under this contract. Individual study reports are collected as exhibits. Work performed under the subject contract are in the following four areas of upper-lower atmosphere coupling: (1) Magnetosphere-ionosphere electrodynamic coupling in the aurora; (2) Troposphere-thermosphere coupling; (3) Ionosphere-neutral-atmosphere coupling; and (4) Planetary wave dynamics in the middle atmosphere
Damage coefficients in low resistivity silicon
Electron and proton damage coefficients are determined for low resistivity silicon based on minority-carrier lifetime measurements on bulk material and diffusion length measurements on solar cells. Irradiations were performed on bulk samples and cells fabricated from four types of boron-doped 0.1 ohm-cm silicon ingots, including the four possible combinations of high and low oxygen content and high and low dislocation density. Measurements were also made on higher resistivity boron-doped bulk samples and solar cells. Major observations and conclusions from the investigation are discussed
Draft Genome Sequence of Mycobacterium arupense Strain GUC1.
We report the draft genome sequence of Mycobacterium arupense strain GUC1 from a sputum sample of a patient with bronchiectasis. This is the first draft genome sequence of Mycobacterium arupense, a rapidly growing nonchromogenic mycobacteria
Draft Genome Sequence of Mycobacterium elephantis Strain Lipa.
We report the draft genome sequence of Mycobacterium elephantis strain Lipa from a sputum sample of a patient with pulmonary disease. This is the first draft genome sequence of M. elephantis, a rapidly growing mycobacterium
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