482 research outputs found
Molecular study of HBZ and gp21 Human T cell lymphotropic virus type 1 proteins isolated from different clinical profile infected individuals
Micromechanical Properties of Injection-Molded Starch–Wood Particle Composites
The micromechanical properties of injection molded starch–wood particle composites were investigated as a function of particle content and humidity conditions.
The composite materials were characterized by scanning electron microscopy and X-ray diffraction methods. The microhardness
of the composites was shown to increase notably with the concentration of the wood particles. In addition,creep behavior under the indenter and temperature dependence
were evaluated in terms of the independent contribution of the starch matrix and the wood microparticles to the hardness value. The influence of drying time on the density
and weight uptake of the injection-molded composites was highlighted. The results revealed the role of the mechanism of water evaporation, showing that the dependence of water uptake and temperature was greater for the starch–wood composites than for the pure starch sample. Experiments performed during the drying process at 70°C indicated that
the wood in the starch composites did not prevent water loss from the samples.Peer reviewe
Multidifferential study of identified charged hadron distributions in -tagged jets in proton-proton collisions at 13 TeV
Jet fragmentation functions are measured for the first time in proton-proton
collisions for charged pions, kaons, and protons within jets recoiling against
a boson. The charged-hadron distributions are studied longitudinally and
transversely to the jet direction for jets with transverse momentum 20 GeV and in the pseudorapidity range . The
data sample was collected with the LHCb experiment at a center-of-mass energy
of 13 TeV, corresponding to an integrated luminosity of 1.64 fb. Triple
differential distributions as a function of the hadron longitudinal momentum
fraction, hadron transverse momentum, and jet transverse momentum are also
measured for the first time. This helps constrain transverse-momentum-dependent
fragmentation functions. Differences in the shapes and magnitudes of the
measured distributions for the different hadron species provide insights into
the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any
supplementary material and additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb
public pages
Study of the decay
The decay is studied
in proton-proton collisions at a center-of-mass energy of TeV
using data corresponding to an integrated luminosity of 5
collected by the LHCb experiment. In the system, the
state observed at the BaBar and Belle experiments is
resolved into two narrower states, and ,
whose masses and widths are measured to be where the first uncertainties are statistical and the second
systematic. The results are consistent with a previous LHCb measurement using a
prompt sample. Evidence of a new
state is found with a local significance of , whose mass and width
are measured to be and , respectively. In addition, evidence of a new decay mode
is found with a significance of
. The relative branching fraction of with respect to the
decay is measured to be , where the first
uncertainty is statistical, the second systematic and the third originates from
the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb
public pages
Measurement of the ratios of branching fractions and
The ratios of branching fractions
and are measured, assuming isospin symmetry, using a
sample of proton-proton collision data corresponding to 3.0 fb of
integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The
tau lepton is identified in the decay mode
. The measured values are
and
, where the first uncertainty is
statistical and the second is systematic. The correlation between these
measurements is . Results are consistent with the current average
of these quantities and are at a combined 1.9 standard deviations from the
predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb
public pages
Is Green Recovery Enough? Analysing the Impacts of Post-COVID-19 Economic Packages
Emissions pathways after COVID-19 will be shaped by how governments’ economic responses translate into infrastructure expansion, energy use, investment planning and societal changes. As a response to the COVID-19 crisis, most governments worldwide launched recovery packages aiming to boost their economies, support employment and enhance their competitiveness. Climate action is pledged to be embedded in most of these packages, but with sharp differences across countries. This paper provides novel evidence on the energy system and greenhouse gas (GHG) emissions implications of post-COVID-19 recovery packages by assessing the gap between pledged recovery packages and the actual investment needs of the energy transition to reach the Paris Agreement goals. Using two well-established Integrated Assessment Models (IAMs) and analysing various scenarios combining recovery packages and climate policies, we conclude that currently planned recovery from COVID-19 is not enough to enhance societal responses to climate urgency and that it should be significantly upscaled and prolonged to ensure compatibility with the Paris Agreement goals
Aspectos tomográficos da órbita aguda infecciosa: revisão de literatura
As doenças que acometem a órbita de forma aguda e não traumática por vezes não são conhecidas por médicos em centros de emergência. Essas condições são decorrentes de diversos fatores, como desordens imunológicas, congênitas, infecciosas, vasculares, entre outras. As causas infecciosas correspondem a mais de 50% de todos os casos e requer rápido diagnóstico e conduta para minimização de sequelas. A tomografia computadorizada (TC) é o exame de imagem de primeira linha nesses casos, sendo geralmente disponível nos centros de emergência e capaz de fornecer auxílio diagnóstico de forma rápida, precisa e eficaz. Esse artigo de revisão visa descrever os principais aspectos tomográficos da órbita aguda infecciosa, correlacionando-os com os dados da literatura
Molecular study of HBZ and gp21 human T cell leukemia virus type 1 proteins isolated from different clinical profile infected individuals.
Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2014-06-04T12:54:34Z
No. of bitstreams: 1
Mota-Miranda ACA Molecular study of HBZ....pdf: 136604 bytes, checksum: 7ba88357a68622e23fedaa32936ce20e (MD5)Made available in DSpace on 2014-06-04T12:54:34Z (GMT). No. of bitstreams: 1
Mota-Miranda ACA Molecular study of HBZ....pdf: 136604 bytes, checksum: 7ba88357a68622e23fedaa32936ce20e (MD5)
Previous issue date: 2013Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil / Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, Brasil /Universidade Federal da Bahia. Instituto de Ciências da Saúde. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil / Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, Brasil /Universidade Federal da Bahia. Instituto de Ciências da Saúde. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil / Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, BrasilHuman T cell leukemia virus type 1 (HTLV-1) is associated with a neurological syndrome named tropical spastic
paraparesis/HTLV-associated myelopathy (TSP/HAM) and the disease progression involves viral factors. The
gp21 glycoprotein is involved in envelope trafficking and membrane targeting while the bZIP protein is indispensable
for cell growth and proliferation. This study aimed to assess the molecular diversity of gp21 and
HBZ proteins in TSP/HAM and healthy carriers. DNA samples from HTLV-1-infected individuals were submitted
to PCR and sequencing, and the molecular analyses were performed using bioinformatics tools. From
eight gp21-analyzed sequences one amino acid change (Y477H) was associated with the switch of a helix to coil
structure at secondary structure prediction. From 10 HBZ analyzed sequences, two amino acid changes were
identified (S9P and T95I) at the activation domain. One mutation (R112C) located at the nuclear localization
signal was present in 66.7% and 25% of healthy carriers (HC) and TSP/HAM groups, respectively. This is the
first report of mutations in the HBZ region. These polymorphisms might be important for viral fitness
- …