pinecone/core-2020-05-10-deduplication huggingface dataset:
Phosphorylation of chloroplast ribulose bisphosphate carboxylase/oxygenase small subunit by an envelope-bound protein kinase in situ

A new protein kinase of the cAMP independent type was found to be bound to the outer envelope membrane of spinach chloroplasts. While stimulated by Mg2+ and inhibited by ADP, the enzyme showed no response to conventional protein substrates and was essentially independent of pH in the physiological (pH 7 to 8) range. The new protein kinase phosphorylated the mature form of the small subunit of ribulose 1,5- bisphosphate carboxylase/oxygenase and, to a lesser extent, an unidentified 24-kDa polypeptide, both of which were bound to the outer envelope membrane. The results suggest that phosphorylation of cytoplasmically synthesized protein constituents of chloroplasts is involved in their transport through the chloroplast envelope membrane barrier.
Measurement of the inclusive jet cross-sections in proton-proton collisions at s√=8 TeV with the ATLAS detector

Inclusive jet production cross-sections are measured in proton-proton collisions at a centre-of-mass energy of s√=8 TeV recorded by the ATLAS experiment at the Large Hadron Collider at CERN. The total integrated luminosity of the analysed data set amounts to 20.2 fb−1. Double-differential cross-sections are measured for jets defined by the anti-kt jet clustering algorithm with radius parameters of R = 0.4 and R = 0.6 and are presented as a function of the jet transverse momentum, in the range between 70 GeV and 2.5 TeV and in six bins of the absolute jet rapidity, between 0 and 3.0. The measured cross-sections are compared to predictions of quantum chromodynamics, calculated at next-to-leading order in perturbation theory, and corrected for non-perturbative and electroweak effects. The level of agreement with predictions, using a selection of different parton distribution functions for the proton, is quantified. Tensions between the data and the theory predictions are observed
Predicting the values of the leptonic CP violation phases in theories with discrete flavour symmetries

Using the fact that the neutrino mixing matrix \ud
$U = U^\dagger_{e}U_{\nu}$, where $U_{e}$ and $U_{\nu}$ \ud
result from the diagonalisation of the charged lepton \ud
and neutrino mass matrices, we consider a \ud
number of \ud
forms of  $U_{\nu}$ associated with a variety \ud
of discrete symmetries:\ud
i) bimaximal (BM) and ii) tri-bimaximal (TBM) forms, \ud
the forms corresponding iii) to the conservation of the \ud
lepton charge $L' = L_e - L_\mu - L_{\tau}$ (LC), \ud
iv) to golden ratio type A (GRA) mixing,  \ud
v) golden ratio type B (GRB) mixing, \ud
and vi) to hexagonal (HG) mixing.  \ud
Employing the minimal form of $U_e$, in terms of angles and \ud
phases it contains, that can provide the requisite \ud
corrections to $U_{\nu}$ so that \ud
reactor, atmospheric and solar neutrino mixing angles \ud
$\theta_{13}$, $\theta_{23}$ and  $\theta_{12}$ \ud
have values compatible with the current data,\ud
including a possible sizable deviation of $\theta_{23}$ \ud
from $\pi/4$, we discuss the possibility to obtain\ud
predictions for the CP violation phases \ud
in the  neutrino mixing matrix. \ud
Considering the ``standard ordering'' \ud
of the the 12 and the 23 rotations \ud
in $U_e$ and following the approach \ud
developed in \cite{Marzocca:2013cr} \ud
we derive predictions for the Dirac phase \ud
$\delta$ and the rephasing invariant $J_{\rm CP}$\ud
in the cases of GRA, GRB and HG forms of $U_{\nu}$\ud
(results  for the TBM and BM (LC) forms \ud
were obtained in \cite{Marzocca:2013cr}). \ud
We show also that under rather general conditions  \ud
within the scheme considered the values of \ud
the Majorana phases in the PMNS matrix \ud
can be predicted for each of the  \ud
forms of $U_{\nu}$ discussed. We give examples \ud
of these predictions and of their implications \ud
for neutrinoless double beta decay.\ud
In the GRA, GRB and HG cases, \ud
as in the TBM one, relatively large CP \ud
violation effects in neutrino oscillations \ud
are predicted ($|J_{CP}| \sim (0.031 - 0.034)$).\ud
Distinguishing between the TBM, \ud
BM (LC), GRA, GRB and HG forms of $U_{\nu}$  requires \ud
a measurement of $\cos\delta$ or a \ud
relatively high precision measurement of $J_{\rm CP}$
clOpenCL - supporting distributed heterogeneous computing in HPC clusters

Clusters that combine heterogeneous compute device architectures, coupled with novel programming models, have created a true alternative to traditional (homogeneous) cluster computing, allowing to leverage the performance of parallel applications. In this paper we introduce clOpenCL, a platform that supports the simple deployment and efficient running of OpenCL-based parallel applications that may span several cluster nodes, expanding the original single-node OpenCL model. clOpenCL is deployed through user level services, thus allowing OpenCL applications from different users to share the same cluster nodes and their compute devices. Data exchanges between distributed clOpenCL components rely on Open-MX, a high-performance communication library. We also present extensive experimental data and key conditions that must be addressed when exploiting clOpenCL with real applications.ERDF - European Regional Development Fund through the COMPETE Programme; FCT (Portuguese Foundation for Science and Technology) within project FCOMP-01-0124-FEDER-01006
Influence of galactic arm scale dynamics on the molecular composition of the cold and dense ISM : I. Observed abundance gradients in dense clouds

This work has been founded by the European Research Council (Starting Grant 3DICE, grant agreement 336474). The authors are also grateful to the CNRS program "Physique et Chimie du Milieu Interstellaire" (PCMI) co-funded by the Centre National d’Etudes Spatiales (CNES) for partial funding of their work. IAB gratefully acknowledges support from the ECOGAL project, grant agreement 291227, funded by the European Research Council under ERC-2011-ADG.Aim. We study the effect of large scale dynamics on the molecular composition of the dense interstellar medium during the transition between diffuse to dense clouds. Methods. We followed the formation of dense clouds (on sub-parsec scales) through the dynamics of the interstellar medium at galactic scales. We used results from smoothed particle hydrodynamics (SPH) simulations from which we extracted physical parameters that are used as inputs for our full gas-grain chemical model. In these simulations, the evolution of the interstellar matter is followed for ~50 Myr. The warm low-density interstellar medium gas flows into spiral arms where orbit crowding produces the shock formation of dense clouds, which are held together temporarily by the external pressure. Results. We show that depending on the physical history of each SPH particle, the molecular composition of the modeled dense clouds presents a high dispersion in the computed abundances even if the local physical properties are similar. We find that carbon chains are the most affected species and show that these differences are directly connected to differences in (1) the electronic fraction, (2) the C/O ratio, and (3) the local physical conditions. We argue that differences in the dynamical evolution of the gas that formed dense clouds could account for the molecular diversity observed between and within these clouds. Conclusions. This study shows the importance of past physical conditions in establishing the chemical composition of the dense medium.PostprintPeer reviewe
Preparation and characterization of 33S samples for 33S(n,??)30Si cross-section measurements at the n_TOF facility at CERN

?? 2018 The Authors. Published by Elsevier B. V. This is an Open Access article under the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/Thin 33S samples for the study of the 33S(n,??)30Si cross-section at the n_TOF facility at CERN were made by thermal evaporation of 33S powder onto a dedicated substrate made of kapton covered with thin layers of copper, chromium and titanium. This method has provided for the first time bare sulfur samples a few centimeters in diameter. The samples have shown an excellent adherence with no mass loss after few years and no sublimation in vacuum at room temperature. The determination of the mass thickness of 33S has been performed by means of Rutherford backscattering spectrometry. The samples have been successfully tested under neutron irradiation
The modelling gap : quantifying the discrepancy in the representation of thermal mass in building simulation

Enhanced fabric performance is fundamental to reduce the energy consumption in buildings. Research has shown that the thermal mass of the fabric can be used as a passive design strategy to reduce energy use for space conditioning. Concrete is a high density material, therefore said to have high thermal mass. Insulating concrete formwork (ICF) consists of cast in-situ concrete poured between two layers of insulation. ICF is generally perceived as a thermally lightweight construction, although previous field studies indicated that ICF shows evidence of heat storage effects. There is a need for accurate performance prediction when designing new buildings. This is challenging in particular when using advanced or new methods (such as ICF), that are not yet well researched. Building Performance Simulation (BPS) is often used to predict the thermal performance of buildings. Large discrepancies can occur in the simulation predictions provided by different BPS tools. In many cases assumptions embedded within the tools are outside of the modeller's control. At other times, users are required to make decisions on whether to rely on the default settings or to specify the input values and algorithms to be used in the simulation. This paper investigates the “modelling gap”, the impact of default settings and the implications of the various calculation algorithms on the results divergence in thermal mass simulation using different tools. ICF is compared with low and high thermal mass constructions. The results indicated that the modelling uncertainties accounted for up to 26% of the variation in the simulation predictions
The CARMENES search for exoplanets around M dwarfs HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 (V = 8.9 mag, M = 0.58 +/- 0.08 M-circle dot), a bright M0.0 V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of K = 5.1 +/- 0.4 m s(-1) and a period of P = 86.54 +/- 0.06 d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass m(P) sin i = 25 +/- 2 M-circle plus, 1.5 times the mass of Neptune, with an orbital semi-major axis a = 0.32 au and low eccentricity (e < 0.13). HD 147379 b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1 d (and its first harmonic), which we attribute to the rotation period of the star
HCO3(-)-independent pH regulation in astrocytes in situ is dominated by V-ATPase.

The mechanisms of HCO3(-)-independent intracellular pH (pHi) regulation were examined in fibrous astrocytes within isolated neonatal rat optic nerve (RON) and in cultured cortical astrocytes. In agreement with previous studies, resting pHi in cultured astrocytes was 6.82 ± 0.06 and inhibition of the V-ATPase H(+) pump by Cl(-) removal or via the selective inhibitor bafilomycin had only a small effect upon resting pHi and recovery following an acid load. In contrast, resting pHi in RON astrocytes was 7.10 ± 0.04, significantly less acidic than that in cultured cells (p < 0.001), and responded to inhibition of V-ATPase with profound acidification to the 6.3-6.5 range. Fluorescent immuno-staining and immuno-gold labeling confirmed the presence V-ATPase in the cell membrane of RON astrocyte processes and somata. Using ammonia pulse recovery, pHi recovery in RON astrocyte was achieved largely via V-ATPase with sodium-proton exchange (NHE) playing a minor role. The findings indicate that astrocytes in a whole-mount preparation such as the optic nerve rely to a greater degree upon V-ATPase for HCO3(-)-independent pHi regulation than do cultured astrocytes, with important functional consequences for the regulation of pH in the CNS
Myoblasts inhibit prostate cancer growth by paracrine secretion of tumor necrosis factor-α

PURPOSE: Myoblasts can form muscle fibers after transplantation. Therefore, they are envisioned as a treatment for urinary incontinence after radical prostatectomy. However, to our knowledge the safety of this treatment and the interaction of myoblasts with any remaining neighboring cancer are unknown. We investigated the interactions between myoblasts and prostate carcinoma cells in vitro and in vivo. MATERIALS AND METHODS: Myoblasts isolated from the rectus abdominis were used in a series of co-culture experiments with prostate cancer cells and subcutaneously co-injected in vivo. Cell proliferation, cell cycle arrest and apoptosis of cancer in co-culture with myoblasts were assessed. Tumor volume and metastasis formation were evaluated in a mouse model. Tissue specific markers were assessed by immunohistochemistry, fluorescence activated cell sorting analysis, Western blot and real-time quantitative polymerase chain reaction. RESULTS: Myoblasts in proximity to tumor provided paracrine tumor necrosis factor-α to their microenvironment, decreasing the tumor growth of all prostate cancer cell lines examined. Co-culture experiments revealed induction of cell cycle arrest, tumor death by apoptosis and increased myoblast differentiation. This effect was largely blocked by tumor necrosis factor-α inhibition. The same outcome was noted in a mouse model, in which co-injected human myoblasts also inhibited the tumor growth and metastasis formation of all prostate cancer cell lines evaluated. CONCLUSIONS: Myoblasts restrict prostate cancer growth and limit metastasis formation by paracrine tumor necrosis factor-α secretion in vitro and in vivo
Notes on the genus Trachyandra (Asphodelaceae: Asphodeloideae) 1: A review of the T. thyrsoidea group (Section Trachyandra) including three new species from the Northern Cape

Three new species of the genus Trachyandra are described, T. hantamensis Boatwr. & J.C.Manning, T. kamiesbergensis Boatwr. & J.C.Manning and T. sanguinorhiza Boatwr. & J.C.Manning. These species form part of a group of morphologically similar species referred to here as the T. thyrsoidea group and are distinguished by their generally small stature, filiform leaves (except for T. tortilis), and simple or shortly branched racemes of patent flowers with maculate tepals. Many of the species in the group have roots that contain abundant anthraquinones, visible as a red substance below the outer skin of the roots, and which is soluble in alcohol, thus often staining herbarium papers purple. A synopsis of the eight species that comprise the T. thyrsoidea group is presented, with maps of each species and illustrations of those described as new
On the invariants of some solvable rigid Lie algebras\ud

We determine fundamental systems of invariants for complex solvable rigid Lie algebras having nonsplit nilradicals of characteristic sequence (3, 1, .., 1), these algebras being the natural followers of solvable algebras having Heisenberg nilradicals. A special case of this allows us to obtain a criterion to determine the number of functionally independent invariants of rank one subalgebras of (real or complex) solvable Lie algebras. Finally, we give examples of the inverse procedure, obtaining fundamental systems\ud
of an algebra starting from rank one subalgebra
Noether symmetric $f(R)$ quantum cosmology and its classical
  correlations

We quantize a flat FRW cosmology in the context of the $f(R)$ gravity by
Noether symmetry approach. We explicitly calculate the form of $f(R)$ for which
such symmetries exist. It is shown that the existence of a Noether symmetry
yields a general solution of the Wheeler-DeWitt equation where can be expressed
as a superposition of states of the form $e^{iS}$. In terms of Hartle
criterion, this type of wave function exhibits classical correlations, i.e. the
emergent of classical universe is expected due to the oscillating behavior of
the solutions of Wheeler-DeWitt equation. According to this interpretation we
also provide the Noether symmetric classical solutions of our $f(R)$
cosmological model.Comment: 11 pages, 1 figure, to appear in PL
To what extent is a large space of matrices not closed under the
  product?

Let K denote a field. Given an arbitrary linear subspace V of M_n(K) of
codimension lesser than n-1, a classical result states that V generates the
K-algebra M_n(K). Here, we strengthen this in three ways: we show that M_n(K)
is spanned by the products of the form AB with A and B in V; we prove that
every matrix in M_n(K) can be decomposed into a product of matrices of V;
finally, when V is a linear hyperplane of M_n(K) and n>2, we show that every
matrix in M_n(K) is a product of two elements of V.Comment: 20 pages (v2 : minor typos corrected, title changed
Period-Luminosity-Colour distribution and classification of Galactic
  oxygen-rich LPVs

The absolute K magnitudes and kinematic parameters of about 350 oxygen-rich
Long-Period Variable stars are calibrated, by means of an up-to-date
maximum-likelihood method, using Hipparcos parallaxes and proper motions
together with radial velocities and, as additional data, periods and V-K colour
indices. Four groups, differing by their kinematics and mean magnitudes, are
found. For each of them, we also obtain the distributions of magnitude, period
and de-reddened colour of the base population, as well as de-biased
period-luminosity-colour relations and their two-dimensional projections. The
SRa semiregulars do not seem to constitute a separate class of LPVs. The SRb
appear to belong to two populations of different ages. In a PL diagram, they
constitute two evolutionary sequences towards the Mira stage. The Miras of the
disk appear to pulsate on a lower-order mode. The slopes of their de-biased PL
and PC relations are found to be very different from the ones of the Oxygen
Miras of the LMC. This suggests that a significant number of so-called Miras of
the LMC are misclassified. This also suggests that the Miras of the LMC do not
constitute a homogeneous group, but include a significant proportion of
metal-deficient stars, suggesting a relatively smooth star formation history.
As a consequence, one may not trivially transpose the LMC period-luminosity
relation from one galaxy to the other.Comment: 13 pages, 23 figures. Accepted for publication in A&A
Propagation of Coulomb-correlated electron-hole pairs in semiconductors
  with correlated and anticorrelated disorder

Local ultrafast optical excitation of electron-hole pairs in disordered
semiconductors provides the possibility to observe experimentally
interaction-assisted propagation of correlated quantum particles in a
disordered environment. In addition to the interaction driven delocalization
known for the conventional single-band TIP-(two-interacting-particles)-problem
the semiconductor model has a richer variety of physical parameters that give
rise to new features in the temporal dynamics. These include different masses,
correlated vs. anticorrelated disorder for the two particles, and dependence on
spectral position of excitation pulse.Comment: 4 pages and 5 ps figure
Dirichlet-Neumann inverse spectral problem for a star graph of Stieltjes
  strings

We solve two inverse spectral problems for star graphs of Stieltjes strings
with Dirichlet and Neumann boundary conditions, respectively, at a selected
vertex called root. The root is either the central vertex or, in the more
challenging problem, a pendant vertex of the star graph. At all other pendant
vertices Dirichlet conditions are imposed; at the central vertex, at which a
mass may be placed, continuity and Kirchhoff conditions are assumed. We derive
conditions on two sets of real numbers to be the spectra of the above Dirichlet
and Neumann problems. Our solution for the inverse problems is constructive: we
establish algorithms to recover the mass distribution on the star graph (i.e.
the point masses and lengths of subintervals between them) from these two
spectra and from the lengths of the separate strings. If the root is a pendant
vertex, the two spectra uniquely determine the parameters on the main string
(i.e. the string incident to the root) if the length of the main string is
known. The mass distribution on the other edges need not be unique; the reason
for this is the non-uniqueness caused by the non-strict interlacing of the
given data in the case when the root is the central vertex. Finally, we relate
of our results to tree-patterned matrix inverse problems.Comment: 32 pages, 3 figure
A Quantum Mechanics Analogy for the Nonlinear Schr\"{o}dinger Equation
  in the Finite Line

A quantum mechanics analogy is used to determine the forces acting on and the
energies of solitons governed by the nonlinear Schr\"odinger equation in finite
intervals with periodic and with homogeneous Dirichlet, Neumann and Robin
boundary conditions. It is shown that the energy densities remain nearly
constant for periodic, while they undergo large variations for homogeneous,
boundary conditions. The largest variations in the force and energy densities
occur for the Neumann boundary conditions, but, for all the boundary conditions
considered in this paper, the magnitudes of these forces and energies recover
their values prior to the interaction of the soliton with the boundary, after
the soliton rebound process is completed. It is also shown that the quantum
momentum changes sign but recovers its original value after the collision of
the soliton with the boundaries. The asymmetry of the Robin boundary conditions
shows different dynamic behaviour at the left and right boundaries of the
finite interval
Unified Subharmonic Oscillation Conditions for Peak or Average Current
  Mode Control

This paper is an extension of the author's recent research in which only buck
converters were analyzed. Similar analysis can be equally applied to other
types of converters. In this paper, a unified model is proposed for buck,
boost, and buck-boost converters under peak or average current mode control to
predict the occurrence of subharmonic oscillation. Based on the unified model,
the associated stability conditions are derived in closed forms. The same
stability condition can be applied to buck, boost, and buck-boost converters.
Based on the closed-form conditions, the effects of various converter
parameters including the compensator poles and zeros on the stability can be
clearly seen, and these parameters can be consolidated into a few ones.
High-order compensators such as type-II and PI compensators are considered.
Some new plots are also proposed for design purpose to avoid the instability.
The instability is found to be associated with large crossover frequency. A
conservative stability condition, agreed with the past research, is derived.
The effect of the voltage loop ripple on the instability is also analyzed.Comment: Subharmonic oscillation conditions of a class of nonlinear systems
  (triangular wave generator with linear feedback) are obtained. Any
  current-mode-control DC-DC converter can be modeled by such such a nonlinear
  system and its subharmonic oscillation condition is obtained. This second
  version adds Nomenclature, parameter lables in figures, and Fig. 2