Results 71 to 80 of about 6,635 (208)

Impact of Filtering Methods in the Assessment of COSMIC Electron Density Profiles Over the Brazilian Region: Excluding Profiles With Negative Values Is the Best Strategy?

open access: yesRadio Science, Volume 60, Issue 11, November 2025.
Abstract Global Navigation Satellite Systems radio occultation (RO) is a valuable and relevant source of information from the atmosphere. Many efforts have been made to provide methods of validation of RO profiles, however, no clear methodology for filtering the profiles from RO can be easily found.
Gabriel O. Jerez   +3 more
wiley   +1 more source

Molecular variation of Trypanosoma brucei subspecies as revealed by AFLP fingerprinting [PDF]

open access: yes, 2002
Genetic analysis of Trypanosoma spp. depends on the detection of variation between strains. We have used the amplified fragment length polymorphism (AFLP) technique to develop a convenient and reliable method for genetic characterization of Trypanosome ...
Agbo, E.E.C.   +3 more
core   +4 more sources

Thermospheric Density Disturbances During the 2015 St. Patrick's Day Geomagnetic Storm: Model–Observation Comparisons and Analysis of Intense Polar Density Spikes

open access: yesSpace Weather, Volume 23, Issue 10, October 2025.
Abstract Drag affecting satellites in low Earth orbit varies significantly during geomagnetic storms due to changes in thermospheric density. While neutral density can be inferred from satellite measurements, such data sets are limited and restrict neutral density/orbit prediction capabilities.
E. J. Blanchfield   +4 more
wiley   +1 more source

Recombination dynamics of a human Y-chromosomal palindrome:rapid GC-biased gene conversion, multi-kilobase conversion tracts, and rare inversions [PDF]

open access: yes, 2013
The male-specific region of the human Y chromosome (MSY) includes eight large inverted repeats (palindromes) in which arm-to-arm similarity exceeds 99.9%, due to gene conversion activity.
A Geraldes   +52 more
core   +3 more sources

Minisatellite “isoallele” discrimination in pseudohomozygotes by single molecule PCR and variant repeat mapping

open access: yesGenomics, 1991
The D1S8 hypervariable minisatellite MS32 has a heterozygosity of 97.5% based on detectable differences in allele length using standard Southern blot analysis. It has previously been shown that the basic repeat unit is in itself variable and that this may be used to map the internal structure of an allele. This method has already been used to establish
D G, Monckton, A J, Jeffreys
openaire   +2 more sources

Thermospheric Density, Composition, and Temperature From GOES‐R/SUVI Solar Occultations

open access: yesSpace Weather, Volume 23, Issue 9, September 2025.
Abstract A new data set of atomic oxygen (O) and molecular nitrogen (N2 ${\mathrm{N}}_{2}$) number density profiles, along with thermospheric temperature profiles between 180 and 500 km, has been developed. These profiles are derived from solar occultation measurements made by the Solar Ultraviolet Imager (SUVI) on the GOES‐R satellites, using the 17.1,
R. H. A. Sewell   +8 more
wiley   +1 more source

A Gravity Study of the Crustal Structure Beneath the Young Amagmatic Rukwa‐Tanganyika Rift Zone

open access: yesTectonics, Volume 44, Issue 8, August 2025.
Abstract The Rukwa‐Tanganyika Rift Zone (RTRZ), experiencing multiphase rifting, forms the nonvolcanic southern part of the Western Branch of the East African Rift. We investigate the crustal structure beneath the RTRZ to understand how strain migrates beneath multiphase rifts.
Emmanuel A. Njinju, Estella A. Atekwana
wiley   +1 more source

Analysis of mitochondrial control region DNA variation in New Zealand's brushtail possums (Trichosurus vulpecula) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University [PDF]

open access: yes, 2001
Brushtail possums (Trichosurus vulpecula) were first introduced from Australia to New Zealand in 1858 to establish a fur industry. Currently numbering more than 65 million, they are recognised as the most important mammalian pest in New Zealand, because ...
Chapman, Joanne R
core  

A Tetranucleotide Repeat Mouse Minisatellite Displaying Substantial Somatic Instability during Early Preimplantation Development

open access: yesGenomics, 1993
The highly variable mouse minisatellite Hm-2 is located on chromosome 9 and consists of GGCA tetranucleotide repeats with alleles containing up to 5000 repeat units. This locus is unstable with a germline mutation rate to new length alleles of at least 3.6% per gamete.
Gibbs, M   +3 more
openaire   +3 more sources

Seasonal Variability of the DE3 and DE2 Non‐Migrating Tides in Middle Thermospheric Temperature and Composition During October 2018–August 2021 as Revealed by GOLD

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 8, August 2025.
Abstract A subset of non‐migrating tides, including the diurnal eastward propagating tides with zonal wavenumbers 3 and 2, respectively, referred to as DE3 and DE2, are upward propagating waves that have been studied as phenomena that couple the lower atmosphere with the thermosphere. While the climatology of non‐migrating tides in the mesosphere/lower
Christopher S. Krier   +2 more
wiley   +1 more source

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