نتایج جستجو برای: ttv
تعداد نتایج: 389 فیلتر نتایج به سال:
We extract Transit Timing Variation (TTV) signals for pairs of transiting planet candidates that are near first-order Mean Motion Resonances (MMR), using publicly available Kepler lightcurves (Q0-Q9). We are able to solidly confirm the planetary nature of 12 new pairs because their TTV signals exhibit sinusoidal variations at the expected timescale and with reasonable phases. Applying the analy...
Smart materials are highly desirable over the recent decade due to growing demand on complicated nature. with stable stimuli-responsive properties widely applied in sensors, smart windows, displays, and chemical valves, but they relatively rare. Most of current chromic triggered by one or two external stimuli, only a few multi-stimuli responsive instances still suffer their restricting function...
Torque teno virus is a human non-enveloped singlestranded circular DNA virus with icosahedral symmetry and a particle size of approximately 30 nm. TTV was first characterised as a blood-borne virus and was initially referred to as transfusion-transmitted virus (Nishizawa et al. 1997). Its negative-sense genome is 3.6-3.9 kb in size (Mushahwar et al. 1999). Recently, it was renamed Torque teno v...
Peripheral blood mononuclear cells (PBMC) harbored TT virus (TTV) of genotypes (3 and 4) different from those (1 and 2) of free virions in plasma of the same individuals. PBMC may act as a reservoir, and TTV of particular genotypes might have tropism for hematopoietic cells.
Since 1997, groups of novel nonenveloped DNA viruses with a circular, single-stranded (negative sense) DNA genome of 3.6-3.9 kb, 3.2 kb, or 2.8-2.9 kb in size have been discovered and designated Torque teno virus (TTV), Torque teno midi virus (TTMDV), and Torque teno mini virus (TTMV), respectively, in the floating genus Anellovirus. These three anelloviruses frequently and ubiquitously infect ...
A sequence-independent PCR amplification method was used to identify viral nucleic acids in the plasma samples of 25 individuals presenting with symptoms of acute viral infection following high-risk behavior for human immunodeficiency virus type 1 transmission. GB virus C/hepatitis G virus was identified in three individuals and hepatitis B virus in one individual. Three previously undescribed ...
Patients who undergo dialysis treatment or a renal transplant have a high risk of blood-borne viral infections, including the Torque teno virus (TTV). This study identified the presence of TTV and its genome groups in blood samples from 118 patients in dialysis and 50 renal-transplant recipients. The research was conducted in a hospital in the city of Maringá, state of Paraná. The viral DNA, ob...
introduction and aims: tt virus (ttv) is a dna virus and is proposed as a potential cause of non-a to e hepatitis. we aimed to investigate, for the first time, the prevalence of ttv in iranian healthy blood donors. materials and methods: three hundred and twelve healthy iranian blood donors were randomly selected and tested for ttv dna by the seminested polymerase chain reaction method. serum a...
TT virus (TTV) is not only an infectious agent of worldwide distribution but has also been demonstrated in various non-human primates in addition to humans. In the present study, we subjected the sera of 67 gibbons to PCR and nucleotide sequencing, with subsequent phylogenetic analysis to determine the nature of the relationship between TTV found in humans and non-human primates. We discovered ...
A transiting planet exhibits sinusoidal transit-time-variations (TTVs) if perturbed by a companion near a mean-motion-resonance (MMR). We search for sinusoidal TTVs in more than 2600 Kepler candidates, using the publicly available Kepler light-curves (Q0-Q12). We find that the TTV fractions rise strikingly with the transit multiplicity. Systems where four or more planets transit enjoy four roug...
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