bluuebunny/crossref_metadata_2025 huggingface dataset:
Reseña del Libro: Capital Humano. Viabilidad de la inversión en su desarrollo Integral (Administración Pública de Sonora)
Authors: Cervantes Rascón Ivan de Jesús
Published: November 2019

Tras la caída de las principales economías de control estatal a nivel mundial en los principios de la década de los 90's, se pensó que inevitablemente los particulares serian los encargados de proporcionar la gran mayoría de los servicios dentro de las sociedades, se especuló, no sin razón alguna, que el Estado poco a poco iría cediendo obligaciones y funciones al capital privado, hasta terminar prácticamente como un simple ente decorativo. Por fortuna para unos, y para desgracia de otros, esto no se cumplió en el mundo entero, y países como México aun cuentan con una administración pública con amplias potestades. Sin embargo, es bien sabido que en todo el país, y Sonora no es la excepción, esta administración dista mucho de ser perfecta.Lentitud, ignorancia y corrupción son elementos que a veces se manifiestan en dicha administración, haciendo al ciudadano sumergirse en un mundo que roza lo kafkiano.
The effects of oral sodium bicarbonate on extracellular water in patients with chronic kidney disease
Authors: Jones Colin , Wells Louise , Woodrow Graham , Ashford David
Published: November 2019

Background: Metabolic acidosis in chronic kidney disease (CKD) is often treated with oral sodium bicarbonate. There is limited evidence around the effects of sodium bicarbonate on extracellular fluid and blood pressure in CKD.
Methods: In a double blind randomised comparison patients with stage 3-5 CKD were randomised to either oral sodium bicarbonate 1.5 g three times a day (n=18) or placebo (n=21) for 4 weeks. Assessments performed at 0 and 4 weeks included: body weight, office blood pressure and assessment for peripheral/pulmonary oedema; serum creatinine, electrolytes and venous bicarbonate; 24-hour urine for sodium excretion; extracellular fluid volume and total body water determined by sodium bromide and deuterium oxide dilution respectively; extracellular fluid volume and total body water by bioimpedance. Differences between the active and placebo groups at week 4 were analysed by ANCOVA.
Results: At week 4, serum bicarbonate was higher (25.6±2.4 vs 23.3±3.1 mmol/l) and blood urea lower (14.2±5.6 vs 17.0±5.8 mmol/l) in the active treatment group. Urine sodium concentration was also higher (82.7±25.3 vs 59.0±21.9 mmol/l). Extracellular fluid volume (20.0±4.3 vs 18.0±2.9) and total body water (42.3±9.6 vs 39.0±6.8) measured by bioimpedance and total body water by deuterium dilution (41.7±8.3 vs 39.4±6.2) were significantly greater in the treatment arm at week 4. Differences in systolic and diastolic blood pressure did not reach statistical significance.
Conclusions: Oral sodium bicarbonate has a biological effect and increases body water content, without evidence of a clinical consequence. This may reflect the fact that some of the ingested sodium is excreted in the urine.
Biomechanics and Physiology in top level Pole Dancers. A case study
Authors: Ruscello Bruno , Esposito Mario , Pantanella Laura , Partipilo Filippo , Lunetta Laura , D’Ottavio Stefano
Published: November 2019

The aim of this study was to investigate the physical and physiological demands of three top-level pole dancers’ performances during a simulated competition. Three elite pole dancers, participated in the study. Physical data pertaining to the accelerations and the rotational values were collected. A complete video footage was recorded. Blood Pressure, Heart Rates, Blood Lactate concentrations were recorded during the performance. Before and after the simulated competitions some postural stability tests were also performed. Accelerations along the vertical axis reached »2G and rotational movements around the pole, reached »400°/s. Blood Pressure values ranged from 120/75 before and to 145/58 mmHg at the end of performance, respectively. Heart Rates reached a mean peak value of »114% of the Maximal Estimated Heart Rates (HRmax) and a mean HRmax% of 74.59±8.82% during the simulated competition. Blood Lactate concentration ranged from 11.43±2.13 to 10.63±1.65 mmol/L measured at 1 min and 5 min after the completion of the competition, respectively. Postural effects were observed on balance, after the performances. The results of this case study confirm that the Pole Dancing requires heavy physiological and physical demands on the performers. Specific training routines should be designed in order to cope efficiently with this physical activity.
Improvements in fitness and vitality after a short high intensity training
Authors: Timmermans Olaf , Matthijsse Mathilde
Published: November 2019

This study explored the effects of a short intensive training program to enhance the vitality of middle-aged and elderly people. 32 participants were questioned by a standardized questionnaire, at the start and end of a three-month period, during which they participated in a short intensive training program. This study presents the results of the quality control scale, a fysiofitscan, physical activity and the Vita 16. In general, the perceived fitness of the participants improved significantly. According to the results of the Vita 16 the participants had more energy after the short-term lifestyle intervention.
Business Event Destination Determinants: Malaysia Event Organizers' Perspective
Authors: Nwobodo Stanley , Ngui Kwang Sing , Voon Mung Ling
Published: November 2019

The choice of destination for a business event is influenced by a range of attributes, including the event type, location, or number of attendees. This article investigates the influence of event characteristics on destination selection attributes in Malaysia. Data collected from 261
event organizers using a simple random probability method were analyzed to test for significant differences between destination attributes and event characteristics. The findings revealed that the event size and venue have a significant and direct impact on some destination attributes; however,
contrary to previous studies, event type was insignificant and had no direct impact on destination attributes. The results contribute knowledge on approaches to improve the marketing of destinations to business event organizers in Malaysia. Furthermore, the results imply that marketers, who
want to optimize strategies to better meet the needs of the Malaysia business event industry, should align destination attributes with the dimensions of event characteristics.
From Legacy Rhetoric to Business Benefits: A Case Study of the Gold Coast 2018 Commonwealth Games
Authors: Carlini Joan , Coghlan Alexandra , Thomson Alana , O'Neil Andrew
Published: November 2019

Bids for large-scale sporting events and the accompanying political rhetoric typically include promises of economic development and gains for host business communities over the short and long term. Although conceptual models for economic leverage of large-scale sport events have been
developed, our knowledge of the practical experiences of private enterprise converting opportunities presented by large-scale sport events is limited. In this article, the authors address this gap through a case study of the Gold Coast 2018 Commonwealth Games. The article investigates the
opportunities and challenges perceived by private enterprises across the host city and explores the implementation of existing strategies to leverage benefits for business. Although participants identify the general benefits of hosting the event, they struggle to conceptualize benefits in
relation to their own business settings. This suggests a disconnect between the legacy rhetoric of large-scale sporting events and the conversion of these opportunities into outcomes by private enterprises in the host city. Against this background, the article outlines a range of practical
implications for private enterprise and key areas for future research.
Improved adsorption and degradation performance by S-doping of (001)-TiO2
Authors: Sun Xiao-Yu , Sun Xiao , Zhang Xian , Qian Ni-Xian , Wang Min , Ma Yong-Qing
Published: November 2019

In this work, sulfur-doped (S-doped) TiO2with the (001) face exposed was synthesized by thermal chemical vapor deposition at 180 or 250 °C using S/Ti molar ratiosRS/Tiof 0, 0.5, 1, 2, 3, 4 and 5. The S-doped samples synthesized at 250 °C exhibit a significantly improved photocatalytic performance. More precisely, S-doping has the following effects on the material: (1) S can adopt different chemical states in the samples. Specifically, it exists in the form of S2−replacing O2−at a ratio ofRS/Ti= 1 and also in the form of S6+replacing Ti4+atRS/Ti≥ 2. As a result, S-doping causes a lattice distortion, because the ionic radii of S2−and S6+differ from that of the O2−and Ti4+ions. (2) S-doping increases the adsorption coefficientAefor methylene blue (MB) from 0.9% to 68.5% due to the synergistic effects of the oxygen vacancies, increased number of surface chemical adsorption centers as a result of SO42−adsorption on the TiO2surface and the larger pore size. (3) S-doping increases the MB degradation rate from 6.9 × 10−2min−1to 18.2 × 10−2min−1due to an increase in the amount of •OH and •O2−radicals.
Efficient Method for Propargylation of Aldehydes Promoted by Allenyl Boron Compounds under Microwave Irradiation
Authors: Freitas Jucleiton J R , Freitas Queila P S B , Andrade Silvia R C P , Freitas Juliano C R , Oliveira Roberta A , Menezes Paulo H
Published: November 2019

The propargylation of aldehydes promoted by microwave irradiation using allenyl boron compounds in a chemo- and regioselective way is described. The corresponding products were obtained in short reaction time, high yield and purity without the need of any solvent when allenyl boronic acid pinacol ester was used, or using a minimal amount of acetone when potassium allenyl trifluoroborate was used.
OSSOS. XVIII. Constraining Migration Models with the 2:1 Resonance Using the Outer Solar System Origins Survey
Authors: Chen 陳 Ying-Tung 英同 , Gladman Brett , Volk Kathryn , Murray-Clay Ruth , Lehner Matthew J. , Kavelaars J. J. , Wang 王 Shiang-Yu 祥宇 , Lin 林 Hsing-Wen 省文 , Lykawka Patryk Sofia , Alexandersen Mike , Bannister Michele T. , Lawler Samantha M. , Dawson Rebekah I. , Greenstreet Sarah , Gwyn Stephen D. J. , Petit Jean-Marc
Published: November 2019

Resonant dynamics plays a significant role in the past evolution and current state of our outer solar system. The population ratios and spatial distribution of Neptune’s resonant populations are direct clues to understanding the history of our planetary system. The orbital structure of the objects in Neptune’s 2:1 mean-motion resonance (“twotinos”) has the potential to be a tracer of planetary migration processes. Different migration processes produce distinct architectures, recognizable by well-characterized surveys. However, previous characterized surveys only discovered a few twotinos, making it impossible to model the intrinsic twotino population. With a well-designed cadence and nearly 100% tracking success, the Outer Solar System Origins Survey (OSSOS) discovered 838 trans-Neptunian objects, of which 34 are securely twotinos with well-constrained libration angles and amplitudes. We use the OSSOS twotinos and the survey characterization parameters via the OSSOS survey simulator to inspect the intrinsic population and orbital distributions of twotinos. The estimated twotino population,

with H

r
 < 8.66 (diameter ∼100 km) at 95% confidence, is consistent with the previous low-precision estimate. We also constrain the width of the inclination distribution to a relatively narrow value of

and find that the eccentricity distribution is consistent with a Gaussian centered on e
c = 0.275 with a width e
w = 0.06. We find a single-slope exponential luminosity function with α = 0.6 for the twotinos. Finally, for the first time, we meaningfully constrain the fraction of symmetric twotinos and the ratio of the leading asymmetric islands; both fractions are in the range of 0.2–0.6. These measurements rule out certain theoretical models of Neptune’s migration history.
Manifestations of Three-dimensional Magnetic Reconnection in an Eruption of a Quiescent Filament: Filament Strands Turning to Flare Loops
Authors: Lörinčík Juraj , Dudík Jaroslav , Aulanier Guillaume
Published: November 2019

We report on observations of the conversion of bright filament strands into flare loops during the 2012 August 31 filament eruption. Prior to the eruption, individual bright strands composing one of the legs of the filament were observed in the 171 Å filter channel data of the Atmospheric Imaging Assembly. After the onset of the eruption, one of the hooked ribbons started to propagate and contract, sweeping footpoints of the bright filament strands as well as coronal loops located close by. Later on, hot flare loops appeared in regions swept by the hook, where the filament strands were rooted. Timing and localization of these phenomena suggest that they are caused by reconnection of field lines composing the filament at the hook, which, to our knowledge, has not been observed before. This process is not included in the standard flare model (CSHKP), as it does not address footpoints of erupting flux ropes and ribbon hooks. It has, however, been predicted using the recent three-dimensional extensions to the standard flare model. There, the erupting flux rope can reconnect with surrounding coronal arcades as the hooked extensions of current ribbons sweep its footpoints. This process results in formation of flare loops rooted in previous footpoints of the flux rope. Our observations of sweeping of filament footpoints are well described by this scenario. In all observed cases, all of the footpoints of the erupting filament became footpoints of flare loops. This process was observed to last for about 150 minutes, throughout the whole eruption.
Sulfur-bearing Molecules in Orion KL
Authors: Luo Gan , Feng Siyi , Li Di , Qin Sheng-Li , Peng Yaping , Tang Ningyu , Ren Zhiyuan , Shi Hui
Published: November 2019

We present an observational study of the sulfur (S)-bearing species toward Orion KL at 1.3 mm by combining ALMA and IRAM-30 m single-dish data. At a linear resolution of ∼800 au and a velocity resolution of 1 km s−1, we have identified 79 molecular lines from six S-bearing species. In these S-bearing species, we found a clear dichotomy between carbon–sulfur compounds and carbon-free S-bearing species for various characteristics, e.g., of line profiles, spatial morphology, and molecular abundances with respect to H2. Lines from the carbon–sulfur compounds (i.e., OCS, 13CS, and H2CS) exhibit spatial distributions concentrated around the continuum peaks and extended to the south ridge. The full width at half maximum (FWHM) linewidth of these molecular lines is in the range of 2 ∼11 km s−1. The molecular abundances of OCS and H2CS decrease slightly from the cold (∼68 K) to the hot (∼176 K) regions. In contrast, lines from the carbon-free S-bearing species (i.e., SO2, 34SO, and H2S) are spatially more extended to the northeast of mm4, exhibiting broader FWHM line widths (15 ∼ 26 km s−1). The molecular abundances of carbon-free S-bearing species increase by over an order of magnitude as the temperature increase from 50 to 100 K. In particular, 34SO/34SO2 and OCS/SO2 are enhanced from the warmer regions (>100 K) to the colder regions (∼50 K). Such enhancements are consistent with the transformation of SO2 at warmer regions and the influence of shocks.
The Polarization Behavior of Relativistic Synchrotron Self-Compton Jets
Authors: Peirson A. L. , Romani Roger W.
Published: November 2019

We describe a geometric model for synchrotron and synchrotron self-Compton (SSC) radiation from blazar jets, involving multiple emission zones with turbulent magnetic fields and fully self-consistent seed photon mixing for SSC. Including the effects of jet divergence, particle cooling, and the relativistic PA rotation to the observer frame, we find that the multizone model recovers simple predictions for SSC polarization, but describes new dependencies on jet viewing geometry and zone multiplicity. Increasing the zone number decreases both synchrotron and SSC polarization, but with different scaling. A rise in synchrotron polarization fraction ΠSync at high energies is guaranteed by basic relativity considerations, and strengthened by jet nonuniformity. Finite light travel time effects can suppress the synchrotron polarization at energies well below the ν
Sync peak. In general ΠSync and ΠSSC are correlated with ΠSSC/ΠSync ≈ 0.3, but individual realizations can lie far from this trend. This study lets us estimate Π across the SED, leading to predictions in the X-ray band helpful for planning observations with IXPE and other upcoming X-ray polarization missions.
Analysis of Helium-rich White Dwarfs Polluted by Heavy Elements in the Gaia Era
Authors: Coutu S. , Dufour P. , Bergeron P. , Blouin S. , Loranger E. , Allard N. F. , Dunlap B. H.
Published: November 2019

We present an analysis of 1023 DBZ/DZ(A) and 319 DQ white dwarf stars taken from the Montreal White Dwarf Database. This represents a significant increase over the previous comprehensive studies on these types of objects. We use new trigonometric parallax measurements from the Gaia second data release, together with photometry from the Sloan Digital Sky Survey, Pan-STARRS, Gaia, or BVRI from the literature, which allow the determination of the mass for the majority of the objects in our sample. We use the photometric and spectroscopic techniques with our recently improved model atmospheres code, which include high-density effects, to accurately determine the effective temperature, surface gravity, and heavy-element abundances for each object. We study the abundance of hydrogen in DBZ/DZ white dwarfs and the properties of the accreted planetesimals. We explore the nature of the second sequence of DQ stars using proper motions from Gaia and highlight evidence of crystallization in massive DQ stars. We also present mass distributions for both spectral types. Finally, we discuss the implications of our findings in the context of the spectral evolution of white dwarfs and provide the atmospheric parameters for each star.
Solar Fast-drifting Radio Bursts in an X1.3 Flare on 2014 April 25
Authors: Tan Baolin , Chen Naihwa , Yang Ya-Hui , Tan Chengming , Masuda Satoshi , Chen Xingyao , Misawa H.
Published: November 2019

One of the most important products of solar flares is nonthermal energetic particles, which may carry up to 50% of the energy released in the flaring processes. In radio observations, nonthermal particles generally manifest as spectral fine structures with fast frequency-drifting rates, named as solar fast-drifting radio bursts (FDRBs). This work demonstrated three types of FDRBs, including type III pair bursts, narrowband stochastic spike bursts following the type III bursts, and spike-like bursts superimposed on a type II burst in an X1.3 flare on 2014 April 25. We find that although all of them have fast frequency-drifting rates, they are intrinsically different from each other in frequency bandwidth, drifting rate, and statistical distribution. We suggest that they are possibly generated from different accelerating mechanisms. The type III pair bursts may be triggered by high-energy electron beams accelerated by the flaring magnetic reconnection, spike bursts are produced by the energetic electrons accelerated by a termination shock wave triggered by the fast reconnecting plasma outflows impacting the flaring loop top, and spike-like bursts are possibly generated by nonthermal electrons accelerated by moving magnetic reconnection triggered by interaction between coronal mass ejection and the background magnetized plasma. These results may help us to understand the generation mechanism of nonthermal particles and energy release in solar flares.
Dwarf Galaxy Discoveries from the KMTNet Supernova Program. II. The NGC 3585 Group and Its Dynamical State*
Authors: Park Hong Soo , Moon Dae-Sik , Zaritsky Dennis , Kim Sang Chul , Lee Youngdae , Cha Sang-Mok , Lee Yongseok
Published: November 2019

We present our discovery and analysis of dwarf galaxies in the NGC 3585 galaxy group by the Korea Microlensing Telescope Network (KMTNet) Supernova Program. Using deep stack images reaching ≃28 mag arcsec−2 in BVI, we discovered 46 dwarf galaxy candidates distributed in a field of 7 square degrees. The dwarf galaxy candidates exhibit a central surface brightness as faint as μ
0,V
 = 26.2 mag arcsec−2, with effective radii larger than 150 pc and total absolute magnitudes brighter than M

V
 ≈ −10 mag, if at the distance of NGC 3585. The dwarf galaxy surface number density decreases with projected distance from NGC 3585. We estimate the background contamination to be about 20% based both on the number density profile and on diffuse galaxy counts in a control field. The dwarf galaxy colors and Sérsic structural parameters are consistent with those found for other dwarf galaxies. Unusually, there is no indication of a change in color or brightness in the dwarf galaxy candidates with projected distance from the group center. Approximately 20% of the candidates contain an unresolved nucleus. The nucleated fraction is larger for brighter (and redder) galaxies, but is independent of distance from the group center. We identify four ultra-diffuse galaxy candidates, all near the group center. We interpret these spatial properties as suggesting that the NGC 3585 group might be dynamically younger than the typical group. The galaxy luminosity function of the NGC 3585 group has a faint-end slope of α ≈ −1.39, which is roughly consistent with the slopes found for other nearby groups. The possible dependence of the slope on global group properties is still unclear and continues to motivate our homogeneous deep survey of dozens of nearby groups.
The Imprint of Spiral Arms on the Galactic Rotation Curve
Authors: McGaugh Stacy S.
Published: November 2019

We discuss a model for the Milky Way obtained by fitting the observed terminal velocities with the radial acceleration relation. The resulting stellar surface density profile departs from a smooth exponential disk, having bumps and wiggles that correspond to massive spiral arms. These features are used to estimate the term for the logarithmic density gradient in the Jeans equation, which turn out to have exactly the right location and amplitude to reconcile the apparent discrepancy between the stellar rotation curve and that of the interstellar gas. This model also predicts a gradually declining rotation curve outside the solar circle with slope

, as subsequently observed.
DASH: Deep Learning for the Automated Spectral Classification of Supernovae and Their Hosts
Authors: Muthukrishna Daniel , Parkinson David , Tucker Brad E.
Published: November 2019

We present DASH (Deep Automated Supernova and Host classifier), a novel software package that automates the classification of the type, age, redshift, and host galaxy of supernova spectra. DASH makes use of a new approach that does not rely on iterative template-matching techniques like all previous software, but instead classifies based on the learned features of each supernova’s type and age. It has achieved this by employing a deep convolutional neural network to train a matching algorithm. This approach has enabled DASH to be orders of magnitude faster than previous tools, being able to accurately classify hundreds or thousands of objects within seconds. We have tested its performance on 4 yr of data from the Australian Dark Energy Survey (OzDES). The deep learning models were developed using TensorFlow and were trained using over 4000 supernova spectra taken from the CfA Supernova Program and the Berkeley SN Ia Program as used in SNID (Supernova Identification software). Unlike template-matching methods, the trained models are independent of the number of spectra in the training data, which allows for DASH's unprecedented speed. We have developed both a graphical interface for easy visual classification and analysis of supernovae and a Python library for the autonomous and quick classification of several supernova spectra. The speed, accuracy, user-friendliness, and versatility of DASH present an advancement to existing spectral classification tools. We have made the code publicly available on GitHub and PyPI (pip install astrodash) to allow for further contributions and development. The package documentation is available at https://astrodash.readthedocs.io.
The K2 Bright Star Survey. I. Methodology and Data Release
Authors: Pope Benjamin J. S. , White Timothy R. , Farr Will M. , Yu Jie , Greklek-McKeon Michael , Huber Daniel , Aerts Conny , Aigrain Suzanne , Bedding Timothy R. , Boyajian Tabetha , Creevey Orlagh L. , Hogg David W.
Published: November 2019

While the Kepler mission was designed to look at tens of thousands of faint stars (V ≳ 12), brighter stars that saturated the detector are important because they can be and have been observed very accurately by other instruments. By analyzing the unsaturated scattered-light “halo” around these stars, we retrieved precise light curves of most of the brightest stars in K2 fields from Campaign 4 onward. The halo method does not depend on the detailed cause and form of systematics, and we show that it is effective at extracting light curves from both normal and saturated stars. The key methodology is to optimize the weights of a linear combination of pixel time series with respect to an objective function. We test a range of such objective functions, finding that lagged Total Variation, a generalization of Total Variation, performs well on both saturated and unsaturated K2 targets. Applying this to the bright stars across the K2 Campaigns reveals stellar variability ubiquitously, including effects of stellar pulsation, rotation, and binarity. We describe our pipeline and present a catalog of the 161 bright stars, with classifications of their variability, asteroseismic parameters for red giants with well-measured solar-like oscillations, and remarks on interesting objects. These light curves are publicly available as a High Level Science Product from the Mikulski Archive for Space Telescopes (footnote 17).
May atyid shrimps act as potential vectors of crayfish plague?
Authors: Mrugała Agata , Buřič Miloš , Petrusek Adam , Kouba Antonín
Published: November 2019

The causative agent of crayfish plague, Aphanomyces astaci Schikora, was long considered to be a specialist pathogen whose host range is limited to freshwater crayfish. Recent studies, however, provided evidence that this parasite does not only grow within the tissues of freshwater-inhabiting crabs but can also be successfully transmitted by them to European crayfish species. The potential to act as alternative A. astaci hosts was also indicated for freshwater shrimps. We experimentally tested resistance of two freshwater atyid shrimps: Atyopsis moluccensis (De Haan, 1849) and Atya gabonensis Giebel, 1875. They were infected with the A. astaci strain associated with the globally widespread North American red swamp crayfish, Procambarus clarkii (Girard, 1852), the typical host of the A. astaci genotype group D. As popular ornamental species, both shrimps may get in contact with infected P. clarkii not only in the wild but also in the aquarium trade. We assessed the potential of shrimps to transmit A. astaci to susceptible crayfish by cohabiting A. gabonensis previously exposed to A. astaci zoospores with the European noble crayfish, Astacus astacus (Linnaeus, 1758). In both experiments, the presence of A. astaci infection was analysed with species-specific quantitative PCR. We detected A. astaci in bodies and exuviae of both shrimp species exposed to A. astaci zoospores, however, the intensity of infection differed between the species and analysed samples; it was higher in A. moluccensis and the exuviae of both species. A. astaci was also detected in one A. astacus individual in the transmission experiment. This finding reveals that freshwater shrimps may be able to transmit A. astaci to crayfish hosts; this is particularly important as even a single successful infection contributes to the spread of the disease. Moreover, our results indicate that the tested shrimp species may be capable of resisting A. astaci infection and reducing its intensity through moulting. Although their potential to act as prominent A. astaci vectors requires further research, it should not be ignored as these freshwater animals may then facilitate A. astaci spread to susceptible crayfish species in aquarium and aquaculture facilities as well as in the wild.
New records of Lumbricidae and Collembola in anthropogenic soils of East European tundra
Authors: Kolesnikova Alla A. , Baturina Maria A. , Shadrin Dmitry M. , Konakova Tatyana N. , Taskaeva Anastasia A.
Published: November 2019

The terrestrial environment of the East European tundra consists of a mosaic of habitat types. In addition to the natural habitat diversity, various human-influenced types may occur. In the town of Vorkuta, Komi Republic, Russia the manure-enriched soils near hydrogen sulfide springs were observed. This site represents an unusually nutrient-rich location with considerable development of organic soils, in contrast to the naturally forming soils in East European tundra which are typically thin and nutrient poor. In these organic soils, two species of Lumbricidae and two species of Collembola previously not recorded from the natural ecosystems in the study area of research territory were found. One earthworm species, Dendrodrilus rubidus tenuis, is likely to have been introduced. The presence of the three other species (Eiseniella tetraedra, Folsomia fimetaria, and Proisotoma minuta) is quite natural in East European tundra and such anthropogenic soils with high organic content may be a good habitat for them.
First record of Cicadellidae (Insecta, Hemiptera, Auchenorrhyncha) from Eocene Sakhalinian amber
Authors: Dietrich Christopher H. , Perkovsky Evgeny E.
Published: November 2019

Sakhalotettix eocenicusgen. & sp. nov., the first leafhopper reported from middle Eocene Sakhalinian amber, is described and illustrated. The fossil cicadellid resembles modern Xestocephalini and Bathysmatophorini in some respects but, because of its unique combination of traits, cannot be placed with certainty in either group, or in any other modern cicadellid subfamily. It is, therefore, considered to be incertae sedis within Cicadellidae.
Comparing Psoriatic Arthritis Low-field Magnetic Resonance Imaging, Ultrasound, and Clinical Outcomes: Data from the TICOPA Trial
Authors: Helliwell Philip S. , Coates Laura C. , Chew Ne Siang , Lettieri Giovanni , Moverley Anna R. , Freeston Jane E. , Nam Jackie , Waxman Robin , Emery Paul , Conaghan Philip G.
Published: November 2019

Objective.

The Tight Control of inflammation in Psoriatic arthritis (TICOPA; isrctn.com: ISRCTN30147736) trial compared standard care (StdC) and tight control (TC) in early psoriatic arthritis (PsA), demonstrating better outcomes for TC. This substudy evaluated the performance metrics of modern imaging outcomes and compared them to the clinical data.

Methods.

Non-contrast 0.2T magnetic resonance imaging (MRI; single hand) was assessed using the Outcomes in Rheumatology (OMERACT) PsA MRI Scoring System (PsAMRIS) with an additional global inflammation score. Ultrasound (US; same hand) was scored for greyscale, power Doppler, and erosions at the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints and scores summated.

Results.

Seventy-eight patients had paired (baseline and 48 weeks) US data and 61 paired MRI data; 50 had matched clinical, MR, and US data. Significant within-group changes were seen for the inflammatory PsAMRIS components at MCP level: MRI global inflammation [median difference (range), standardized response mean (SRM)]: 3.25 (−5.0 to 12.0), 0.68; 1.0 (−4.5 to 17.5), 0.45 for TC and StdC, respectively. Similar within-group differences were obtained for US: 1.0 (−13.0 to 23.0), 0.45; 3.0 (−6.0 to 21.0), 0.77 for TC and StdC, respectively. No differences were seen between treatment groups. Significant correlations were found between baseline and change MRI and US scores. A significant correlation was found between baseline PsA disease activity scores and MRI global inflammation scores (Spearman ρ for MCP, PIP: 0.46, 0.63, respectively). No differences in erosion progression were observed.

Conclusion.

The PsAMRIS and US inflammation scores demonstrated good responsiveness. No between-group differences were demonstrated, but this substudy was likely underpowered to determine differences between the 2 treatment strategies.
Economic Analysis of the Use of Anti-DFS70 Antibody Test in Patients with Undifferentiated Systemic Autoimmune Disease Symptoms
Authors: Moroni Luca , Restovic Gabriela , Cervera Ricard , Espinosa Gerard , Viñas Odette , García Milagros , Sampietro-Colom Laura
Published: November 2019

Objective.

In patients with antinuclear antibodies (ANA) and undifferentiated features of systemic autoimmune disease, the coexistence of monospecific anti-dense fine speckled 70 (anti-DFS70) antibodies is associated with a lower risk of progression to overt disease. Therefore, they might help in correctly classifying ANA- positive patients and avoiding unnecessary followup diagnostic procedures. The aim of this study was to analyze the economic effect of the introduction of the anti-DFS70 antibody test in a hospital setting.

Methods.

A case-control study was performed to detect monospecific anti-DFS70 antibodies in ANA-positive subjects with undifferentiated features (cases, n = 124) and with a defined systemic autoimmune disease (controls, n = 290). Based on current clinical practice, a decision tree was developed to represent the disease course of patients with undifferentiated features in the subsequent 3 years. A budget impact analysis (BIA) was performed to estimate the effect of implementing the screening for anti-DFS70 antibodies in the case group on the total costs. A sensitivity analysis was conducted to calculate the effect of the uncertainty of the input variables on the results.

Results.

Among the 124 patients in the case group, 5 (4.0%) tested positive for anti-DFS70 antibodies versus 4/290 (1.4%) in the control group (p = not significant). The mean cost per patient under the current clinical practice decreased from €3274 to €3192 in our scenario. The BIA reports cost savings of €10,128.

Conclusion.

The introduction of anti-DFS70 antibody test would avoid unnecessary followup diagnostic procedures and minimize the use of health resources generated by suspicion of a potential systemic autoimmune disease.
Acute Calcium Pyrophosphate Crystal Arthritis Flare Rate and Risk Factors for Recurrence
Authors: Yates Katherine A. , Yoshida Kazuki , Xu Chang , Lyu Houchen , Norvang Vibeke , Solomon Daniel H. , Tedeschi Sara K.
Published: November 2019

Objective.

Little is known about acute calcium pyrophosphate (CPP) crystal arthritis flare rates and risk factors for recurrence. We characterized flares and determined the rate and predictors of acute CPP crystal arthritis flares in an academic medical center cohort.

Methods.

We performed a retrospective cohort study among a random sample of patients with acute CPP crystal arthritis identified in the Partners HealthCare electronic medical record, 1991–2017. Flare was defined as self-limited, acute-onset synovitis with synovial fluid CPP crystals and/or chondrocalcinosis, not better explained by another cause. We calculated incidence rates (IR) for acute CPP crystal arthritis flare among all subjects and by sex. We estimated HR for recurrent flare using univariate Cox models that accounted for within-person correlated data.

Results.

We identified 70 patients with acute CPP crystal arthritis with a total of 111 flares. Recurrent flares occurred in 24% of patients; half of flares occurred in a previously unaffected joint. The acute CPP crystal arthritis flare rate was 11.4 per 100 person-years overall (95% CI 8.2–15.4), 14.2 in women (95% CI 9.6–0.1), and 7.1 in men (95% CI 3.4–13.0). Cancer (HR 2.98, 95% CI 1.33–6.68) and chronic kidney disease (HR 2.92, 95% CI 1.10–7.76) were associated with a higher rate for recurrent flare.

Conclusion.

Recurrent flares occurred in about one-fourth of patients with acute CPP crystal arthritis and often occurred in previously unaffected joints. The acute CPP crystal arthritis flare rate was twice as high in women as in men.
The Effect of Morning Stiffness Duration on the Definition of Clinically Inactive Disease in Juvenile Idiopathic Arthritis
Authors: Allegra Maddalena , Gicchino Maria Francesca , Giancane Gabriella , Alongi Alessandra , Tibaldi Jessica , Mazzoni Marta , Consolaro Alessandro , Ravelli Angelo
Published: November 2019

Objective.

To investigate the effect of morning stiffness (MS) on parent disease perception in children with juvenile idiopathic arthritis (JIA) with clinically inactive disease (CID).

Methods.

We examined 652 visits in which patients fulfilled 2004 or 2011 Wallace criteria for CID. Parent-reported outcomes were compared among patients with no MS or with MS < or ≥ 15 min.

Results.

Among 652 visits with CID by 2004 criteria, no MS was reported in 554 visits (85%), MS < 15 min in 53 (8%), and MS ≥ 15 min in 45 (7%). The frequency of altered physical function, health-related quality of life and well-being, pain, and disease activity visual analog scales was proportionally greater in patients without MS than those with longer MS. The frequency of parent subjective rating of disease state as remission was 87.7%, 58%, and 26.7% among patients with no MS, MS < 15 min, and MS ≥ 15 min, respectively.

Conclusion.

Our results suggest that a change in 2011 CID criteria to require absence of MS should be considered.
La pensée politique islamique et l’idée de société moderne
Authors: Ganjipour Anoush
Published: November 2019

Si la pensée politique en islam est née une première fois à travers la traduction/appropriation de la philosophie politique grecque, on peut dire que c’est à partir d’un geste analogue qu’elle a voulu se renouveler au XIX e siècle lors de sa rencontre avec la pensée sociale et politique moderne. De façon en apparence paradoxale, ce nouveau « mouvement de traduction » est le moment originaire pour la modernisation de l’islam et pour sa politisation contemporaine. En remontant à ce tournant majeur de la pensée politique islamique, cet article essaie de retracer la trajectoire théorique à travers laquelle les penseurs réformistes cherchaient à restructurer l’islam autour d’une nouvelle fonction théologico-politique confiée à la sharia pour faire de cette religion une « religion politique », c’est-à-dire une religion précisément moderne
Hegel et l’économie politique de son temps
Authors: Campagnolo Gilles
Published: November 2019

Dans Économie politique et philosophie chez Steuart et Hegel (1963), Paul Chamley examine l’intérêt que Hegel prit tôt pour l’économie. Il le rapporte à l’influence sur Hegel de la lecture, à Francfort, de l’ Enquête publiée par James Steuart, ouvrage (aujourd’hui trop négligé) qui précéda La Richesse des nations d’Adam Smith. Quels thèmes majeurs Hegel y puisa-t-il ? Existe-t-il d’ailleurs une « économie hégélienne » per se  ? Les notions hégéliennes en ce domaine sont-elles d’un bloc ? Outre l’effet du livre de Steuart, s’exercèrent les influences du caméralisme germanique traditionnel et du classicisme britannique naissant. Il faut donc montrer plus de circonspection que Chamley n’en eut et cet essai réévalue les vues de Hegel sur l’économie dans son époque
Saint-Simon et Auguste Comte : la fin d’une collaboration, 1822-1824
Authors: Bourdeau Michel
Published: November 2019

La question des rapports entre Comte et Saint-Simon est toujours en suspens, la version qu’en a donnée le premier étant très sujette à caution. Pour tenter d’y voir clair, il convient de commencer par régler certaines questions factuelles. Les pages qui suivent s’en tiennent aux années qui séparent les publications, dans des périodiques édités par Saint-Simon, du Plan des travaux scientifiques nécessaires pour réorganiser la société (mai 1822-mai 1824) et qui s’achèvent sur une rupture. Grâce à la récente édition des Œuvres complètes de Saint-Simon, il est possible de dégager ce que ses écrits de cette période nous apprennent sur les relations entre les deux hommes.
La crise de manie
Authors: Joly Emmanuelle
Published: November 2019

La crise maniaque est conçue ici comme une modalité défensive permettant de maintenir une suffisante homéostasie psychique. Le moment de bascule maniaque fait suite à des angoisses d’annihilation, déclenchées par une confrontation à l’objet dans l’actuel, réactivant les modalités de liens à l’objet premier, modalités de présence et d’absence évoquant une potentielle dépression primaire. Les angoisses mortifères massives entraînent une perte de la représentation du sentiment d’existence qui se retrouve halluciné dans un scénario énoncé et mis en actes par le sujet durant la crise. Le lien libidinal à l’objet est mis en scène de manière hallucinatoire, permettant pour un temps de surseoir à l’angoisse de ne plus se sentir exister, de ne plus se sentir vu, compris, entendu par un objet, dont la fonction réfléchissante de l’être du sujet est inopérante.
Rutinas profesionales en las redacciones en crisis de los diarios españoles 2008-2018. Caso de estudio: El Mundo del siglo XXI de Madrid (Unidad Editorial)
Authors: Benito Cabello Mario F. , Pérez Cuadrado Pedro
Published: November 2019

Cette étude aborde la question du changement de ce que l’on appelle les routines professionnelles dans les rédactions des quotidiens, causé par la stratégie d’entreprise adoptée pour faire face à la confluence de la crise économique globale de 2008 et de la crise structurelle des médias imprimés. À partir du cas du quotidien El Mundo del Siglo XXI de Madrid, édité par Unidad Editorial, nous analyserons en détail les données de facturation, de diffusion et leur impact sur le nombre d’employés sur la période 2008-2018, ainsi que les actions menées par ce groupe de communication (El Mundo, Marca, Expansión, Telva, Actualidad Económica, etc.), tant en matière de frais, de réduction des éditions locales, du personnel et des salaires, que d’une réorganisation permettant la création de contenus avec bien moins de journalistes («aires transversales», simplification du graphisme et utilisation de modèles de page); que pour les recettes («Digital first»), en tentant de favoriser l’augmentation de la publicité numérique afin de compenser de la sorte la chute de la publicité conventionnelles et la baisse sensible des ventes dans les kiosques.
La Experiencia de Usuario en los productos periodísticos: un enfoque desde el diseño centrado en el lector-usuario
Authors: Martín-Sanromán Juan-Ramón , Suárez Carballo Fernando , Zambrano Juan-Carlos
Published: November 2019

La crise subie par la presse papier, depuis la consolidation de la présence des journaux sur Internet jusqu'à nos jours, présente un panorama, souvent décourageant, dans lequel il semble que seules des stratégies visant à obtenir un public plus large (presque à tout prix) pourront sauver ce type de médias. Le texte passe en revue la crise, les principales stratégies d’innovation abordées par les médias pour la combattre et propose l’approche du design centré sur l’utilisateur comme une alternative pour retenir et fidéliser les lecteurs en générant de nouveaux produits et en redéfinissant ceux qui existent déjà. Cette approche est fondée sur la recherche d’une connaissance exhaustive (fondamentalement qualitative) du lecteur-utilisateur qui aide à comprendre ses besoins, ses attentes et ses préférences, ainsi que ses habitudes en matière d’information. L’objectif ultime est d’obtenir une meilleure expérience dans la relation entre le lecteur-utilisateur et l’organe de presse, toujours centrée sur l’expérience acquise grâce aux produits ou services de ce média et indépendamment du fait que le canal soit analogique ou numérique, sans avoir à trahir leur identité.
Multi Response Optimization of Green Sand Moulding Parameters Using Taguchi-DEAR Method
Authors: Sandeep M.J. , Manjunath Patel G.C. , Chate Ganesh R. , Parappagoudar Mahesh B. , Daivagna Umesh M.
Published: November 2019

Green sand casting is treated as the most versatile casting process due to their excellent design flexibility that offer complex shapes and ability to reclaim silica sand. The modern foundries are looking for alternate moulding materials to partially replace the high cost silica sand. Cow dung is a naturally available eco-friendly binding as well as additive material and is used to partially replace the silica sand. Improper choice of the combination of moulding sand variables, such as degree of ramming, percentage of cow dung, percentage of clay, and percent of water will affect the moulding sand properties and thereby quality of casting. In the present work, Taguchi method is employed to plan and conduct experiments. Pareto analysis of variance is performed to know the contribution of variables on the moulding sand properties (i.e. compression strength, permeability, loss-on-ignition). Taguchi DEAR method is used to determine the single optimal levels of input factors that enhances the performances of all the sand mould properties. Percent of clay and cow-dung found to be the most dominating factor towards all the sand mould properties.
Microstructural Characterization of Microwave Processed Al-SiCP Metal Matrix Composites Subjected to Extrusion
Authors: Honnaiah C. , Ashok Kumar M.S. , Srinath M.S. , Prasad S.L. Ajit
Published: November 2019

Aluminium Metal Matrix composites (AMC) are known to be very promising light weight materials with enhanced mechanical properties which are used in various industries [1]. Aluminium metal–matrix composites reinforced with SiC and Al2O3 are used in automotive and aerospace applications due to reduction in weight and increase the engine efficiency and thereby reducing fuel consumption [2]. Replacing cast iron engine components with light-weight Al alloys requires overcoming of the poor adhesion and seizure resistance of Aluminium achieved by dispersing SiC, Al2O3 or graphite particles in aluminium, Considerable reduction in wear and friction can be achieved by the use of these reinforcement particulate [3].
Study on Surface Roughness in Minimum Quantity Lubrication Turning of Al-6082/SiC Metal Matrix Composites
Authors: Vishwas C.J. , Gajanan M. Naik , Sachin B. , Abhinaba Roy , Puneet N.P. , Anjan B.N. , Kulkarni Vinayak N.
Published: November 2019

Aluminum-based metal matrix composites (MMCs) have been suggested due to intense interest from automobile, marine, aerospace and other structural applications owing to their balanced mechanical, physical and chemical properties. MMCs are manufactured in order to meet present demand such as low material density, high mechanical strength and higher wear resistance of the component. Generally,MMCs tend to form rougher surface during machining because of the abrasive nature of hard ceramic particles present in them. Stir casting technique was used for fabrication of this composite which ensures better homogeneity.Furthermore, an attempt has been made in this paper to examine the results on the surface roughness of Al-6082/SiC metal matrix composites (containing 0%, 5% and 10% SiC particles).Focus was spent on parametric optimization of these composites in order to achieve cost-effective machining limits. The machining parameter studies have been carried out through the design of experiments (DoE) under minimum quantity lubrication (MQL) condition and effect of machining parameters such as spindle speed, feed rate and depth of cut on surface roughness was investigated to analyze the influence of reinforcement on surface roughness. In addition, analysis of variance was studied to obtain percentage contribution of machining parameters involved. Also, the surface morphology of the machined surface was studied through a scanning electron microscope (SEM). Distribution of SiC in aluminum alloy is fairly uniform with few clusters. Results of the experiments revealed that most significant turning parameter for surface roughness was spindle speed followed by feed rate and depth of cut. Furthermore, an optimal setting parameter for getting lower surface roughness was presented in confirmation table.