pinecone/core-2020-05-10-deduplication huggingface dataset:
Designing novel starch/cellulose acetate structures for biomedical applications

Publicado em "Journal of Tissue Engineering and Regenerative Medicine", vol. 7, supp. 1 (2013)Starch-based blends present an enormous potential to be widely used
in the biomedical area, because they are totally biodegradable, inexpensive,
available in large quantities. However, natural-based polymers
have great limitations in processability particularly due to their usually
high crystallinity which limits their solubility. This can be overcome by
the use of ionic liquids which are recognized as ‘green’ replacements for
conventional organic solvents. Earlier reports emphasized the use of
certain ionic liquids to solubilize some natural macromolecules such as
cellulose, starch, chitin, chitosan and silk fibroin. Furthermore, they
present unique physicochemical properties, namely lower vapour pressure,
excellent chemical and thermal stabilities, high ionic conductivity
and easy recyclability. Starch based materials have been proceed in a
variety of different morphologies and shapes by a number of different
processes. In this work, starch/cellulose acetate (SCA) was dissolved in
1-butyl-3-imidazolium acetate, followed by regeneration of the polymer
in different non-solvents (water, ethanol and isopropanol) in order to
obtain membranes. Different concentrations of SCA (5 and 10%) in
ionic liquid and drying techniques (vacuum oven and freeze drying)
were studied. The starch/cellulose acetate structures were evaluated by
their swelling capability, degradation behaviour and morphological features.
Moreover, the influence of thickness on physical chemical properties
of the membranes was assessed. The results revealed that
membranes with lower thickness showed high water absorption, which
by its turn accelerated their degradation rate. Furthermore, the membranes
dried by vacuum oven present a more compact structure as compared
those prepared by freeze drying. Some previous works reported
SCA as a suitable material for tissue engineering purposes, supporting
the cell adhesion. Then, in vitro cell culturing assays will be performed
using osteoblast like cells (SaOs-2) and mouse fibroblast-like cell line
(L929).The cell viability and proliferation on membranes will be evaluated
through the MTS test and the DNA quantification. The development
of innovative technology such as novel natural polymers
materials is of grater interest in medical field. All findings suggested
that the obtained structures (membranes) present adequate properties
for several biomedical applications for instance drug delivery, skin substitutes,
guided bone regeneration or as coatings for medical devices
Search for a fermiophobic Higgs boson in pp collisions at √s = 7 TeV

Journal of High Energy Physics 2012.9 (2012): 111 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMCombined results are reported from searches for a fermiophobic Higgs boson in the γγ, WW, and ZZ decay modes in proton-proton collisions at √s = 7TeV. The explored Higgs boson mass range is 110-300 GeV. The data sample corresponds to an integrated luminosity of 4.9-5.1 fb-1. A fermiophobic Higgs boson is excluded at 95% confidence level in the mass range 110-194 GeV, and at 99% confidence level in the mass ranges 110-124.5 GeV, 127-147.5 GeV, and 155-180 Ge
Search for supersymmetry in pp collisions at √s = 7 TeV in events with a single lepton, jets, and missing transverse momentum

Journal of High Energy Physics 2011.8 (2011): 156 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMResults are reported from a search for physics beyond the standard model in proton-proton collisions at a center-of-mass energy of 7TeV, focusing on the signature with a single, isolated, high-transverse-momentum lepton (electron or muon), energetic jets, and large missing transverse momentum. The data sample comprises an integrated luminosity of 36 pb-1, recorded by the CMS experiment at the LHC. The search is motivated by models of new physics, including supersymmetry. The observed event yields are consistent with standard model backgrounds predicted using control samples obtained from the data. The characteristics of the event sample are consistent with those expected for the production of tt̄ and W+jets events. The results are interpreted in terms of limits on the parameter space for the constrained minimal supersymmetric extension of the standard mode
Search for supersymmetry with jets, missing transverse momentum and at least one hadronically decaying τ lepton in proton-proton collisions at √(s)=7 TeV with the ATLAS detector

A search for production of supersymmetric particles in final states containing jets, missing transverse momentum, and at least one hadronically decaying tau lepton is presented. The data were recorded by the ATLAS experiment in root s = 7 TeV proton-proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 2.05 fb(-1) of data. The results are interpreted in the context of gauge mediated supersymmetry breaking models with M-mess = 250 TeV, N-5 = 3, μ> 0, and C-grav = 1. The production of supersymmetric particles is excluded at 95% C.L. up to a supersymmetry breaking scale Lambda = 30 TeV, independent of tan beta, and up to Lambda = 43 TeV for large tan beta
Improved unitarized Heavy Baryon Chiral Perturbation Theory for pi N scattering

We show how the unitarized description of pion nucleon scattering within Heavy Baryon Chiral Perturbation Theory can be considerably improved, by a suitable reordering of the expansion over the nucleon mass. Within this framework, the Delta resonance and its associated pole can be recovered from the chiral parameters obtained from low-energy determinations. In addition, we can obtain a good description of the six S and P wave phase shifts in terms of chiral parameters with a natural size and compatible with the Resonance Saturation Hypothesis
High constant incidence rates of second primary cancers of the head and neck: a pooled analysis of 13 cancer registries

Scanty data are available on the incidence (i.e., the absolute risk) of second cancers of the head and neck (HN) and its pattern with age. We investigated this issue using data from a multicentric study of 13 population-based cancer registries from Europe, Canada, Australia and Singapore for the years 1943-2000. A total of 99,257 patients had a first primary HN cancer (15,985 tongue, 22,378 mouth, 20,758 pharyngeal, and 40,190 laryngeal cancer), contributing to 489,855 person-years of follow-up. 1294 of the patients (1.3%) were diagnosed with second HN cancers (342 tongue, 345 mouth, 418 pharynx, and 189 larynx). Male incidence rates of first HN cancer steeply increased from 0.68/100,000 at age 30-34 to 46.2/100,000 at age 70-74, and leveled off at higher age; female incidence increased from 0.50/100,000 at age 30-34 to 16.5/100,000 at age 80-84. However, age-specific incidence of second HN cancers after a first HN cancer in men was around 200-300/100,000 between age 40-44 and age 70-74, and tended to decline at subsequent ages (150/100,000 at age 80-84); in women, incidence of second HN cancers was around 200-300/100,000 between age 45-49 and 80-84. The patterns of age-specific incidence were consistent for different subsites of second HN cancer and sexes; moreover, they were similar for age-specific incidence of first primary HN cancer in patients who subsequently developed a second HN cancer. The incidence of second HN cancers does not increase with age, but remains constant, or if anything, decreases with advancing age.Impact statementWhile the incidence of first primary cancers of the head and neck increases with advancing age that of second primary cancers is stable between age 40 and 70 and, if anything, declines thereafter
GRB 980425 host: [CII], [OI] and CO lines reveal recent enhancement of
  star formation due to atomic gas inflow

We have recently suggested that gas accretion can be studied using host
galaxies of gamma-ray bursts (GRBs). We obtained the first ever far-infrared
(FIR) line observations of a GRB host, namely Herschel/PACS resolved [CII] 158
um and [OI] 63 um spectroscopy, as well as APEX CO(2-1) and ALMA CO(1-0)
observations of the GRB 980425 host. It has elevated [CII]/FIR and [OI]/FIR
ratios and higher values of star formation rate (SFR) derived from line ([CII],
[OI], Ha) than from continuum (UV, IR, radio) indicators. [CII] emission
exhibits a normal morphology, peaking at the galaxy center, whereas [OI] is
concentrated close to the GRB position and the nearby Wolf-Rayet region. The
high [OI] flux indicates high radiation field and gas density. The [CII]/CO
luminosity ratio of the GRB 980425 host is close to the highest values found
for local star-forming galaxies. Its CO-derived molecular gas mass is low given
its SFR and metallicity, but the [CII]-derived molecular gas mass is close to
the expected value. The [OI] and HI concentrations, and the high radiation
field and density are consistent with the hypothesis of a very recent (at most
a few tens of Myr ago) inflow of atomic gas triggering star formation. Dust has
not had time to build up (explaining high line-to-continuum ratios). Such a
recent enhancement of star-formation would indeed manifest itself in high
SFR_line/SFR_continuum ratios, because the line indicators are sensitive only
to recent (<10 Myr) activity, whereas the continuum indicators measure the SFR
averaged over much longer periods (~100 Myr). Other GRB hosts exhibit a mean
SFR_line/SFR_continuum of 1.74+-0.32. This is consistent with a very recent
enhancement of star formation being common among GRB hosts, so galaxies which
have recently experienced inflow of gas may preferentially host stars exploding
as GRBs. Hence GRB hosts may be used to investigate recent gas accretion.Comment: Accepted to A&A. 16 pages, 10 figures, 4 table
Exponential decay of covariances for the supercritical membrane model

We consider the membrane model, that is the centered Gaussian field on
$\mathbb Z^d$ whose covariance matrix is given by the inverse of the discrete
Bilaplacian. We impose a $\delta-$pinning condition, giving a reward of
strength $\varepsilon$ for the field to be $0$ at any site of the lattice. In
this paper we prove that in dimensions $d\geq 5$ covariances of the pinned
field decay at least exponentially, as opposed to the field without pinning,
where the decay is polynomial. The proof is based on estimates for certain
discrete weighted norms, a percolation argument and on a Bernoulli domination
result.Comment: 23 pages, 2 figures. Comments are welcom
NNLO QCD corrections for Drell-Yan $p_T^Z$ and $\phi^*$ observables at
  the LHC

Drell-Yan lepton pairs with finite transverse momentum are produced when the
vector boson recoils against (multiple) parton emission(s), and is determined
by QCD dynamics. At small transverse momentum, the fixed order predictions
break down due to the emergence of large logarithmic contributions. This region
can be studied via the $p_T^Z$ distribution constructed from the energies of
the leptons, or through the $\phi^*$ distribution that relies on the directions
of the leptons. For sufficiently small transverse momentum, the $\phi^*$
observable can be measured experimentally with better resolution. We study the
small $p_T^Z$ and $\phi^*$ distributions up to next-to-next-to-leading order
(NNLO) in perturbative QCD. We compute the $\phi^*$ distributions for the fully
inclusive production of lepton pairs via $Z/\gamma^*$ to NNLO and normalise
them to the NNLO cross sections for inclusive $Z/\gamma^*$ production. We
compare our predictions with the $\phi^*$ distribution measured by the ATLAS
collaboration during LHC operation at 8 TeV. We find that at moderate to large
values of $\phi^*$, the NNLO effects are positive and lead to a substantial
improvement in the theory-data comparison compared to next-to-leading order
(NLO). At small values of $p_T^Z$ and $\phi^*$, the known large logarithmic
enhancements emerge through and we identify the region where resummation is
needed. We find an approximate relationship between the values of $p_T^Z$ and
$\phi^*$ where the large logarithms emerge and find perturbative consistency
between the two observables.Comment: 18 pages, 8 figures, 1 table. v3: fix of an implementational error
  affecting the low $p_T^Z$/$\phi^*$ region; figures and discussion changed
  accordingl
Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at √s=7 TeV with the ATLAS detector

Journal of High Energy Physics 2015.9 (2015): 049 reproduced by permission of Scuola
Internazionale Superiore di Studi Avanzati (SISSA)Artículo escrito por un elevado número de autores, sólo se referencian el nombre del que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere y los autores que firman como pertenecientes a la UAMThis paper presents measurements from the ATLAS experiment of the forwardbackward
asymmetry in the reaction pp → Z/γ∗ → l
+l
−, with l being electrons or muons,
and the extraction of the effective weak mixing angle. The results are based on the full
set of data collected in 2011 in pp collisions at the LHC at √
s = 7 TeV, corresponding
to an integrated luminosity of 4.8 fb−1
. The measured asymmetry values are found to
be in agreement with the corresponding Standard Model predictions. The combination
of the muon and electron channels yields a value of the effective weak mixing angle of
sin2
θ
lept
eff = 0.2308±0.0005(stat.)±0.0006(syst.)±0.0009(PDF), where the first uncertainty
corresponds to data statistics, the second to systematic effects and the third to knowledge
of the parton density functions. This result agrees with the current world average from the
Particle Data Group fitWe acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia;
BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; RGC, Hong Kong SAR, China; ISF, MINERVA, GIF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (U.K.) and BNL (U.S.A.) and in the Tier-2 facilities worldwid
Low threshold room-temperature microdisk lasers in the blue spectral range

InGaN-based active layers within microcavity resonators offer the potential of low threshold lasers in the blue spectral range. Here we demonstrate optically pumped, room temperature lasing in high quality factor GaN microdisk cavities containing InGaN quantum dots (QDs) with thresholds as low as 0.28 mJ/cm2. This work, the first demonstration of lasing action from GaN microdisk cavities with QDs in the active layer, provides a critical step for the nitrides in realizing low threshold photonic devices with efficient coupling between QDs and an optical cavit
Effects of electromagnetic fields emitted by GSM phones on working memory: a meta-analysis

Background and Objective: Current treatments for Alzheimer's Disease (AD) do not affect the course of the illness and brain stimulation techniques are increasingly promoted as potential therapeutic inter-ventions for AD. This study reviews the effects of electromagnetic ﬁeld (EMF) exposure versus sham exposure on working memory (WM) performance of healthy human participants.\ud
Method: Online literature databases and previous systematic reviews were searched for studies of EMF and WM in participants without reported memory problems. Two thousand eight hundred and ﬁfty seven studies were identiﬁed, and 10 studies met the inclusion criteria. An assessment of study quality was completed, and separate, random effects meta-analyses were conducted for each of the three WM tasks included: n-back, substitution and digit span forward.\ud
Results: No differences were found between participants exposed to active EMF versus sham conditions in any of the three working memory tasks examined.\ud
Conclusion: Results indicate that EMF does not affect WM during the n-back, substitution and digit-span tasks. Future studies should focus on the possible effects of chronic exposure to EMF in older adults with AD using a battery of comparable WM and attention tasks, before EMF can be seriously considered as a potential modulator of WM in AD
Evolution of damage during the fatigue of 3D woven glass-fibre reinforced composites subjected to tension-tension loading observed by time-lapse X-ray tomography

The development of fatigue damage in a glass fibre modified layer-to-layer three dimensional (3D) woven composite has been followed by time-lapse X-ray computed tomography (CT). The damage was found to be distributed regularly throughout the composite according to the repeating unit, even at large fractions of the total life. This suggests that the through-thickness constraint provides a high level of stress redistribution and damage tolerance. The different types of damage have been segmented, allowing a quantitative analysis of damage evolution as a function of the number of fatigue cycles. Transverse cracks were found to initiate within the weft after just 0.1% of life, followed soon after (by 1% of life) by longitudinal debonding cracks. The number and extent of these multiplied steadily over the fatigue life, whereas the spacing of transverse cracks along with weft/binder debonding saturated at 60% of life and damage in the resin pockets occurred only just before final failure
Mapping the Asthma Care Process : Implications for Research and Practice

The authors would like to thank the participants to the Respiratory Effectiveness Group Adherence symposium for their comments on the model overview presented during this meeting, members of the ASTRO-LAB consortium for collaborative work on reviewing literature and performing qualitative interviews, and patients and clinicians that shared valuable insights into asthma management during the telephone interviews. The research leading to these results has received funding from the European Community's 7th Framework (FP7/2007-2013) under grant agreement no. 282593.Peer reviewedPublisher PD
Absence of Hepatitis Delta Infection in a Large Rural HIV Cohort in Tanzania.

The epidemiological and clinical determinants of hepatitis delta virus (HDV) infection in Sub-Saharan Africa are ill-defined. The prevalence of HDV infection was determined in HIV/hepatitis B virus (HBV) co-infected individuals in rural Tanzania. All HBV-infected adults under active follow-up in the Kilombero and Ulanga Antiretroviral Cohort (KIULARCO) were screened for anti-HDV antibodies. For positive samples, a second serological test and nucleic acid amplification were performed. Demographic and clinical characteristics at initiation of antiretroviral therapy (ART) were compared between anti-HDV-negative and -positive patients. Among 222 HIV/HBV co-infected patients on ART, 219 (98.6%) had a stored serum sample available and were included in the study. Median age was 37 years, 55% were female, 46% had World Health Organization stage III/IV HIV disease, and the median CD4 count was 179 cells/μl. The prevalence of anti-HDV positivity was 5.0% (95% confidence interval 2.8-8.9%). There was no significant predictor of anti-HDV positivity. HDV could not be amplified in any of the anti-HDV-positive patients and the second serological test was negative in all of them. No confirmed case of HDV infection was found among over 200 HIV/HBV co-infected patients in Tanzania. As false-positive serology results are common, screening results should be confirmed with a second test
The proteasome distinguishes between heterotypic and homotypic lysine-11 linked polyubiquitin chains

[Graphical abstract - see article]
Proteasome-mediated degradation occurs with proteins principally modified with lysine-48 polyubiquitin chains. Whether the proteasome can also bind atypical ubiquitin chains, including those linked by lysine-11, has not been well established. This is critically important, as lysine-11 polyubiquitination has been implicated in both proteasome-mediated degradation and non-degradative outcomes. Here, we identify that pure homotypic lysine-11 linked chains do not bind strongly to the mammalian proteasome. By contrast, heterotypic polyubiquitin chains, containing lysine-11 and lysine-48 linkages, not only bind to the proteasome but also stimulate the proteasomal degradation of the cell cycle regulator, cyclin B1. Thus, while heterotypic lysine-11 linked chains facilitate proteasomal degradation, homotypic lysine-11 linkages adopt conformations that prevent association with the proteasome. Our data demonstrates the capacity of the proteasome to bind ubiquitin chains of distinct topology, with implications for the recognition and diverse biological functions of mixed ubiquitin chains.This work is supported by a Wellcome Trust Senior Clinical Research Fellowship to JAN 
(102770/Z/13/Z), a Wellcome Trust Fellowship to MPW (093966/Z/10/Z) and a National Institute of Health grant (GM067945) to SPG. The Cambridge Institutefor Medical Research is in receipt of a Wellcome Trust Strategic Award [100140].This is the final version of the article. It first appeared from Elsevier via http://dx.doi.org/10.1016/j.celrep.2015.06.06
The converging-input converging-state property for Lur'e systems

Using methods from classical absolute stability theory, combined with recent results on input-to-state stability (ISS) of Lur’e systems, we derive necessary and sufficient conditions for a class of Lur’e systems to have the converging-input converging-state (CICS) property. In particular, we provide sufficient conditions for CICS which are reminiscent of the complex Aizerman conjecture and the circle criterion and connections are also made with small gain ISS theorems. The penultimate section of the paper is devoted to non-negative Lur’e systems which arise naturally in, for example, ecological and biochemical applications: the main result in this context is a sufficient criterion for a so-called “quasi CICS” property for Lur’e systems which, when uncontrolled, admit two equilibria. The theory is illustrated with numerous examples