bluuebunny/crossref_metadata_2025 huggingface dataset:
Efficacy of Nutritional Interventions on Inflammatory Markers in Haemodialysis Patients: A Systematic Review and Limited Meta-Analysis
Authors: Khor Ban-Hock , Narayanan Sreelakshmi , Sahathevan Sharmela , Gafor Abdul , Daud Zulfitri , Khosla Pramod , Sabatino Alice , Fiaccadori Enrico , Chinna Karuthan , Karupaiah Tilakavati
Published: March 2018

Low-grade chronic inflammation is prevalent in patients undergoing haemodialysis (HD) treatment and is linked to the development of premature atherosclerosis and mortality. The non-pharmacological approach to treat inflammation in HD patients through nutritional intervention is well cited. We aimed to assess the efficacy of different nutritional interventions at improving inflammatory outcomes in HD patients, based on markers such as C-reactive protein (CRP), interleukin-6 (IL-6), and tumour necrosis factor-α (TNF-α). We searched PubMed, Cochrane Library, and Embase for randomized controlled trials (RCT) published before June 2017. Inclusion criteria included RCTs on adult patients on maintenance HD treatment with duration of nutritional interventions for a minimum 4 weeks. Risk of bias was assessed using the Jadad score. In total, 46 RCTs experimenting different nutritional interventions were included in the review and categorized into polyphenols rich foods, omega-3 fatty acids, antioxidants, vitamin D, fibres, and probiotics. Meta-analyses indicated significant reduction in CRP levels by omega-3 fatty acids (Random model effect: −0.667 mg/L, p < 0.001) and vitamin E (fixed model effect: −0.257 mg/L, p = 0.005). Evidence for other groups of nutritional interventions was inconclusive. In conclusion, our meta-analysis provided evidence that omega-3 fatty acids and vitamin E could improve inflammatory outcomes in HD patients.
Lysophosphatidic Acid Signaling in Obesity and Insulin Resistance
Authors: D’Souza Kenneth , Paramel Geena , Kienesberger Petra
Published: March 2018

Although simple in structure, lysophosphatidic acid (LPA) is a potent bioactive lipid that profoundly influences cellular signaling and function upon binding to G protein-coupled receptors (LPA1-6). The majority of circulating LPA is produced by the secreted enzyme autotaxin (ATX). Alterations in LPA signaling, in conjunction with changes in autotaxin (ATX) expression and activity, have been implicated in metabolic and inflammatory disorders including obesity, insulin resistance, and cardiovascular disease. This review summarizes our current understanding of the sources and metabolism of LPA with focus on the influence of diet on circulating LPA. Furthermore, we explore how the ATX-LPA pathway impacts obesity and obesity-associated disorders, including impaired glucose homeostasis, insulin resistance, and cardiovascular disease.
Surface Ice and Tholins on the Extreme Centaur 2012 DR30
Authors: Szabó Gy. M. , Kiss Cs. , Pinilla-Alonso N. , Hsiao E. Y. , Marion G. H. , Ries J. Györgyey , Duffard R. , Alvarez-Candal A. , Sárneczky K. , Vinkó J.
Published: March 2018

2012 

is one of the known solar system objects with the largest aphelion distance, exceeding 2200 au, on a high inclination orbit (i = 78°). It has been recognized to be either a borderline representative of high inclination, high perihelion distance (HiHq) objects, or even a new class of bodies, similar to HiHq objects for orbit but with an aphelion in the inner Oort Cloud. Here, we present photometry using long-term data from 2000 to 2013 taken by the SDSS sky survey, ESO MPG 2.2 m and McDonald 2.1 m telescopes, and a visual+near-infrared spectrum taken with the Southern Astrophysical Research Telescope and Magellan telescopes, providing insights into the surface composition of this body. Our best fit suggests that the surface contains 60% of complex organics (30% of Titan and 30% of Triton tholins) with a significant fraction of ice (30%, including pure water and water with inclusions of complex organics) and 10% silicates. The models also suggest a low limit of amorphous carbons, and hence the fragmentation of long-chained complex organics is slower than their rate of generation. 2012 

just recently passed the perihelion, and the long-term photometry of the object suggested ambiguous signs of activity, since the long-term photometric scatter well exceeded the supposed measurement errors and the expected brightness variation related to rotation. Photometric colors put 2012 

exactly between dark neutral and red objects, thus it either can be in a transition phase between the two classes or have differing surface properties from these populated classes.
Simultaneous 13 cm/3 cm Single-pulse Observations of PSR B0329+54
Authors: Yan 闫 Zhen 振 , Shen 沈志 Zhi-Qiang 强 , Manchester R. N. , Ng C.-Y. , Weltevrede P. , Wang 王洪 Hong-Guang 光 , Wu 吴鑫 Xin-Ji 基 , Yuan 袁建 Jian-Ping 平 , Wu 吴亚 Ya-Jun 军 , Zhao 赵融 Rong-Bing 冰 , Liu 刘庆 Qing-Hui 会 , Zhao 赵汝 Ru-Shuang 双 , Liu 刘 Jie 杰
Published: March 2018

We have investigated the mode changing properties of PSR B0329+54 using 31 epochs of simultaneous 13 cm/3 cm single-pulse observations obtained with the Shanghai Tian Ma 65 m telescope. The pulsar was found in the abnormal emission mode 17 times, accounting for ∼13% of the 41.6 hr total observation time. Single-pulse analyses indicate that mode changes took place simultaneously at 13 cm/3 cm within a few rotational periods. We detected occasional bright and narrow pulses whose peak flux densities were 10 times higher than that of the integrated profile in both bands. At 3 cm, about 0.66% and 0.27% of single pulses were bright in the normal mode and abnormal mode, respectively, but at 13 cm the occurrence rate was only about 0.007%. We divided the pulsar radiation window into three components (C1, C2, and C3) corresponding to the main peaks of the integrated profile. The bright pulses preferentially occurred at pulse phases corresponding to the peaks of C2 and C3. Fluctuation spectra showed that C2 had excess red noise in the normal mode, but broad quasi-periodic features with central frequencies around 0.12 cycles/period in the abnormal mode. At 3 cm, C3 had a stronger quasi-periodic modulation centered around 0.06 cycles/period in the abnormal mode. Although there were some asymmetries in the two-dimensional fluctuation spectra, we found no clear evidence for systematic subpulse drifting. Consistent with previous low-frequency observations, we found a very low nulling probability for B0329+54, with upper limits of 0.13% and 1.68% at 13 cm/3 cm, respectively.
Kinematic Distances: A Monte Carlo Method
Authors: Wenger Trey V. , Balser Dana S. , Anderson L. D. , Bania T. M.
Published: March 2018

Distances to high-mass star-forming regions (HMSFRs) in the Milky Way are a crucial constraint on the structure of the Galaxy. Only kinematic distances are available for a majority of the HMSFRs in the Milky Way. Here, we compare the kinematic and parallax distances of 75 Galactic HMSFRs to assess the accuracy of kinematic distances. We derive the kinematic distances using three different methods: the traditional method using the Brand & Blitz rotation curve (Method A), the traditional method using the Reid et al. rotation curve and updated solar motion parameters (Method B), and a Monte Carlo technique (Method C). Methods B and C produce kinematic distances closest to the parallax distances, with median differences of 13% (0.43

) and 17% (0.42

), respectively. Except in the vicinity of the tangent point, the kinematic distance uncertainties derived by Method C are smaller than those of Methods A and B. In a large region of the Galaxy, the Method C kinematic distances constrain both the distances and the Galactocentric positions of HMSFRs more accurately than parallax distances. Beyond the tangent point along ℓ = 30°, for example, the Method C kinematic distance uncertainties reach a minimum of 10% of the parallax distance uncertainty at a distance of 14

. We develop a prescription for deriving and applying the Method C kinematic distances and distance uncertainties. The code to generate the Method C kinematic distances is publicly available and may be utilized through an online tool.
X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region
Authors: Reale Fabio , Lopez-Santiago Javier , Flaccomio Ettore , Petralia Antonino , Sciortino Salvatore
Published: March 2018

Pulsing X-ray emission tracks the plasma “echo” traveling in an extremely long magnetic tube that flares in an Orion pre-main sequence (PMS) star. On the Sun, flares last from minutes to a few hours and the longest-lasting ones typically involve arcades of closed magnetic tubes. Long-lasting X-ray flares are observed in PMS stars. Large-amplitude (∼20%), long-period (∼3 hr) pulsations are detected in the light curve of day-long flares observed by the Advanced CCD Imaging Spectrometer on-board Chandra from PMS stars in the Orion cluster. Detailed hydrodynamic modeling of two flares observed on V772 Ori and OW Ori shows that these pulsations may track the sloshing of plasma along a single long magnetic tube, triggered by a sufficiently short (∼1 hr) heat pulse. These magnetic tubes are ≥20 solar radii long, enough to connect the star with the surrounding disk.
The Role of Proton Cyclotron Resonance as a Dissipation Mechanism in Solar Wind Turbulence: A Statistical Study at Ion-kinetic Scales
Authors: Woodham Lloyd D. , Wicks Robert T. , Verscharen Daniel , Owen Christopher J.
Published: March 2018

We use magnetic field and ion moment data from the MFI and SWE instruments on board the Wind spacecraft to study the nature of solar wind turbulence at ion-kinetic scales. We analyze the spectral properties of magnetic field fluctuations between 0.1 and 5.4 Hz during 2012 using an automated routine, computing high-resolution 92 s power and magnetic helicity spectra. To ensure the spectral features are physical, we make the first in-flight measurement of the MFI “noise-floor” using tail-lobe crossings of the Earth’s magnetosphere during early 2004. We utilize Taylor’s hypothesis to Doppler-shift into the spacecraft frequency frame, finding that the spectral break observed at these frequencies is best associated with the proton cyclotron resonance scale, 1/k

c
, rather than the proton inertial length, d

i
, or proton gyroscale, ρ

i
. This agreement is strongest when we consider periods where

, and is consistent with a spectral break at d

i
for

and at ρ

i
for

. We also find that the coherent magnetic helicity signature observed at these frequencies is bounded at low frequencies by 1/k

c
, and its absolute value reaches a maximum at ρ

i
. These results hold in both slow and fast wind streams, but with a better correlation in the more Alfvénic fast wind where the helicity signature is strongest. We conclude that these findings are consistent with proton cyclotron resonance as an important mechanism for dissipation of turbulent energy in the solar wind,  occurring at least half the time in our selected interval. However, we do not rule out additional mechanisms.
Unambiguous Evidence of Filament Splitting-induced Partial Eruptions
Authors: Cheng X. , Kliem B. , Ding M. D.
Published: March 2018

Coronal mass ejections are often considered to result from the full eruption of a magnetic flux rope (MFR). However, it is recognized that, in some events, the MFR may release only part of its flux, with the details of the implied splitting not completely established due to limitations in observations. Here, we investigate two partial eruption events including a confined and a successful one. Both partial eruptions are a consequence of the vertical splitting of a filament-hosting MFR involving internal reconnection. A loss of equilibrium in the rising part of the magnetic flux is suggested by the impulsive onset of both events and by the delayed onset of reconnection in the confined event. The remaining part of the flux might be line-tied to the photosphere in a bald patch (BP) separatrix surface, and we confirm the existence of extended BP sections for the successful eruption. The internal reconnection is signified by brightenings in the body of one filament and between the rising and remaining parts of both filaments. It evolves quickly into the standard current sheet reconnection in the wake of the eruption. As a result, regardless of being confined or successful, both eruptions produce hard X-ray sources and flare loops below the erupting but above the surviving flux, as well as a pair of flare ribbons enclosing the latter.
Transverse Wave Induced Kelvin–Helmholtz Rolls in Spicules
Authors: Antolin P. , Schmit D. , Pereira T. M. D. , De Pontieu B. , De Moortel I.
Published: March 2018

In addition to their jet-like dynamic behavior, spicules usually exhibit strong transverse speeds, multi-stranded structure, and heating from chromospheric to transition region temperatures. In this work we first analyze Hinode and IRIS observations of spicules and find different behaviors in terms of their Doppler velocity evolution and collective motion of their sub-structure. Some have a Doppler shift sign change that is rather fixed along the spicule axis, and lack coherence in the oscillatory motion of strand-like structure, matching rotation models, or long-wavelength torsional Alfvén waves. Others exhibit a Doppler shift sign change at maximum displacement and coherent motion of their strands, suggesting a collective magnetohydrodynamic (MHD) wave. By comparing with an idealized 3D MHD simulation combined with radiative transfer modeling, we analyze the role of transverse MHD waves and associated instabilities in spicule-like features. We find that transverse wave induced Kelvin–Helmholtz (TWIKH) rolls lead to coherence of strand-like structure in imaging and spectral maps, as seen in some observations. The rapid transverse dynamics and the density and temperature gradients at the spicule boundary lead to ring-shaped Mg ii k and Ca ii H source functions in the transverse cross-section, potentially allowing IRIS to capture the Kelvin–Helmholtz instability dynamics. Twists and currents propagate along the spicule at Alfvénic speeds, and the temperature variations within TWIKH rolls, produce the sudden appearance/disappearance of strands seen in Doppler velocity and in Ca ii H intensity. However, only a mild intensity increase in higher-temperature lines is obtained, suggesting there is an additional heating mechanism at work in spicules.
The Binary Neutron Star Event LIGO/Virgo GW170817 160 Days after Merger: Synchrotron Emission across the Electromagnetic Spectrum
Authors: Margutti R. , Alexander K. D. , Xie X. , Sironi L. , Metzger B. D. , Kathirgamaraju A. , Fong W. , Blanchard P. K. , Berger E. , MacFadyen A. , Giannios D. , Guidorzi C. , Hajela A. , Chornock R. , Cowperthwaite P. S. , Eftekhari T. , Nicholl M. , Villar V. A. , Williams P. K. G. , Zrake J.
Published: March 2018

We report deep Chandra X-ray Observatory (CXO), Hubble Space Telescope (HST), and Karl J. Jansky Very Large Array (VLA) observations of the binary neutron star event GW170817 at t < 160 days after merger. These observations show that GW170817 has been steadily brightening with time and might have now reached its peak, and constrain the emission process as non-thermal synchrotron emission where the cooling frequency ν

c
is above the X-ray band and the synchrotron frequency ν

m
is below the radio band. The very simple power-law spectrum extending for eight orders of magnitude in frequency enables the most precise measurement of the index p of the distribution of non-thermal relativistic electrons

accelerated by a shock launched by a neutron star (NS)–NS merger to date. We find p = 2.17 ± 0.01, which indicates that radiation from ejecta with Γ ∼ 3–10 dominates the observed emission. While constraining the nature of the emission process, these observations do not constrain the nature of the relativistic ejecta. We employ simulations of explosive outflows launched in NS ejecta clouds to show that the spectral and temporal evolution of the non-thermal emission from GW170817 is consistent with both emission from radially stratified quasi-spherical ejecta traveling at mildly relativistic speeds, and emission from off-axis collimated ejecta characterized by a narrow cone of ultra-relativistic material with slower wings extending to larger angles. In the latter scenario, GW170817 harbored a normal short gamma-ray burst (SGRB) directed away from our line of sight. Observations at t ≤ 200 days are unlikely to settle the debate, as in both scenarios the observed emission is effectively dominated by radiation from mildly relativistic material.
High-frequency Oscillations in the Atmosphere above a Sunspot Umbra
Authors: Wang Feng , Deng Hui , Li Bo , Feng Song , Bai Xianyong , Deng Linhua , Yang Yunfei , Xue Zhike , Wang Rui
Published: March 2018

We use high spatial and temporal resolution observations, simultaneously obtained with the New Vacuum Solar Telescope and Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory, to investigate the high-frequency oscillations above a sunspot umbra. A novel time–frequency analysis method, namely, the synchrosqueezing transform (SST), is employed to represent their power spectra and to reconstruct the high-frequency signals at different solar atmospheric layers. A validation study with synthetic signals demonstrates that SST is capable of resolving weak signals even when their strength is comparable to the high-frequency noise. The power spectra, obtained from both SST and the Fourier transform, of the entire umbral region indicate that there are significant enhancements between 10 and 14 mHz (labeled as 12 mHz) at different atmospheric layers. Analyzing the spectrum of a photospheric region far away from the umbra demonstrates that this 12 mHz component exists only inside the umbra. The animation based on the reconstructed 12 mHz component in AIA 171 Å illustrates that an intermittently propagating wave first emerges near the footpoints of coronal fan structures, and then propagates outward along the structures. A time–distance diagram, coupled with a subsonic wave speed (∼49 km s−1), highlights the fact that these coronal perturbations are best described as upwardly propagating magnetoacoustic slow waves. Thus, we first reveal the high-frequency oscillations with a period around one minute in imaging observations at different height above an umbra, and these oscillations seem to be related to the umbral perturbations in the photosphere.
L’évangile, promesse pour les pauvres
Authors: Odinet François
Published: March 2018

Quand les personnes très pauvres méditent l’évangile, elles prennent Dieu au mot, en lisant l’Écriture comme une promesse, résonnant avec la promesse qui qualifie toute vie humaine. La rencontre de la promesse évangélique avec leur quotidien est de type pascal : elle peut faire surgir un cri qui révèle la puissance de leur prière, ou rendre compte de la résurrection. Elle peut encore attester la présence de Dieu là même où sa promesse paraît démentie. L’écho que les personnes très pauvres offrent à l’évangile se révèle ainsi plein d’une singulière autorité.
La contribution de la religion au projet politique de l’Europe
Authors: Dijon Xavier
Published: March 2018

Le projet de construction européenne gagne-t-il à se référer à une confession religieuse ? Alors que les rationalistes récusent une telle liaison au nom de la laïcité, les croyants relisent l’histoire des grands mouvements qui ont parcouru l’Europe – paganisme et judaïsme, christianisme et islam, catholicisme et protestantisme, marxisme et nazisme – pour constater une remarquable convenance entre la tradition chrétienne et le projet européen lui-même.
Treatment of Lateral Tibial Condylar Fractures Using Bioactive, Bioresorbable Forged Composites of Raw Particulate Unsintered Hydroxyapatite/Poly-L-Lactide Screws
Authors: Kuroyanagi Gen , Yoshihara Hiroyuki , Yamamoto Naohiro , Suzuki Hiroyuki , Yamada Kunio , Yoshida Yukio , Otsuka Takanobu , Takada Naoya
Published: March 2018

Forged composites of raw particulate unsintered hydroxyapatite/poly-L-lactide (F-u-HA/PLLA) devices possess high mechanical strength, bioactivity, and radio-opacity. The aim of this study was to assess the efficacy of F-u-HA/PLLA screws in the treatment of lateral tibial condylar fractures. From January 2005 to December 2010, a total of 7 patients with displaced closed lateral tibial condylar fractures (Schatzker type II) were treated using F-u-HA/PLLA screws. Open reduction and internal fixation was performed using 2 or 3 F-u-HA/PLLA screws. After surgery, weight bearing was not allowed for 6 weeks. Range of motion exercise was initiated after removal of the plaster splint. Radiographs were evaluated for fracture healing, joint depression, and the radioopacity of F-u-HA/PLLA screws. Clinical outcomes and postoperative complications were also assessed. Average follow-up was 44 months. All fractures were successfully healed. Average values for joint depression were 4.7 mm (range, 2–9 mm) preoperatively, 0.4 mm (range, 0–1 mm) postoperatively, and 0.4 mm (range, 0–1 mm) at final follow-up. Whole shadows of F-u-HA/PLLA screws were observed during the follow-up period. Breakage of screws, osteolysis, and a radiolucent zone around the screws were not observed at final follow-up. Average knee flexion and extension were 134° (range, 110° to 150°) and −1° (range, −10° to 0°), respectively. No patient had wound infection, late aseptic tissue response, or foreign body reaction postoperatively. None of the patients reported pain at final follow-up. These results suggest that F-u-HA/PLLA screws could be an alternative option for the treatment of lateral tibial condylar fractures. [
Orthopedics
. 2018; 41(3):e365–e368.]
Atypical Mycobacterial Infections of the Upper Extremity
Authors: Smidt Kevin P. , Stern Peter J. , Kiefhaber Thomas R.
Published: March 2018

Atypical mycobacterial infections of upper extremity synovial-lined structures are often misdiagnosed and unrecognized. Despite an increasing incidence, lack of physician awareness of these pathogens may result in considerable delay in diagnosis and management, potentially leading to permanent disability. The authors conducted a literature review and analyzed 31 cases of penetrating atypical mycobacterial infection to better understand the clinical characteristics and to evaluate their posttreatment complication rate compared with available literature. Medical records for culture-positive cases of tenosynovial or intra-articular atypical mycobacterial infections of the upper extremity that were treated were retrospectively reviewed. Treatment outcomes were analyzed against published case reviews and case series. Thirty-one cases of penetrating atypical mycobacterial infection were identified.
Mycobacterium marinum
(n=11) was the most common organism and was associated with aquatic exposure. Twenty-eight cases received empiric treatment, 17 of which received contraindicated treatment. Patients saw an average of 5 physicians prior to receiving an accurate diagnosis, and the mean time to diagnosis was 10 months. All cases received antibiotic treatment in addition to surgical management. Twenty cases (68%) failed treatment outcomes. Delay in diagnosis and inappropriate management of atypical mycobacterial infections may lead to a treatment failure rate that is higher than what has been reported in the literature.
Mycobacterium avium
and
M fortuitum
had significantly higher failure rates than other organisms. A high index of suspicion is required to make a diagnosis and prevent residual disability. [
Orthopedics
. 2018; 41(3):e383–e388.]
La inscripción árabe de la Alhambra de origen desconocido. El poeta oriental del monumento
Authors: Ramírez del Río José
Published: March 2018

Las inscripciones de la Alhambra y del Generalife han sido estudiadas desde hace más de cuatrocientos años y se ha determinado tanto la autoría de los poemas presentes en los muros como su sentido. En este artículo documentamos uno de los dos poemas cuya autoría no había sido determinada hasta la fecha y mostramos el sentido de la misma en el reino nazarí de Granada y en el norte de África.
Profili storici della Convenzione di Oviedo e protocolli addizionali. Il protocollo sulla ricerca biomedica e il caso della sperimentazione di emergenza / Historical profiles of the Oviedo Convention and additional protocols. The protocol on biomedical research and the case of emergency experimentation
Authors: Marrani Daniela , Midolo Emanuela , Spagnolo Antonio G.
Published: March 2018

A venti anni dalla Convenzione di Oviedo traspare ancora la sua attualità e importanza nel definire i principi dell’etica biomedica. Nonostante il cruciale ruolo ricoperto dalla Convenzione di Oviedo e dai suoi Protocolli aggiuntivi, gli Stati Membri presentano una disomogenea adozione degli stessi. In particolar modo, l’Italia ha iniziato il processo di ratifica nel lontano 2001, ma tale processo non essendosi mai concluso lascia un vuoto normativo in alcuni settori importanti come quello della sperimentazione clinica. Tale vuoto risalta maggiormente con l’adozione del nuovo Regolamento EU 536/2014, il quale – sostituendo la Direttiva CE 20/2001 – apporta numerosi cambiamenti ed introduce la possibilità di applicare la sperimentazione in emergenza su soggetti incapaci di fornire consenso informato. Vari sono i dilemmi normativi ed etici che sorgono in relazione a questo tipo di sperimentazione sui soggetti vulnerabili. ---------- Twenty years after the Oviedo Convention, its relevance and importance in defining the principles of biomedical ethics is not questioned. Despite the crucial role played by the Oviedo Convention and its additional Protocols, Member States showed a disparity in their adoption. Particularly, Italy has started the ratification process in the 2001, but this process is not yet completed and this produced a regulatory gap on clinical trials on human subjects. This gap stands out with the adoption of the new EU Regulation no. 536/2014, which – replaces EC Directive 20/2001 – introduces many changes and the possibility to start emergency trials on patients which are incapable to provide informed consent. There are several legal and ethical dilemmas that arise in the light of this specific emergency trial on vulnerable subjects.
$(q_1,q_2)$-квазиметрические пространства. Накрывающие отображения и точки совпадения
Authors: Arutyunov Aram Vladimirovich , Greshnov Alexandr Valer'evich
Published: March 2018

В работе введены $(q_1,q_2)$-квазиметрические пространства и исследованы их свойства. Изучены накрывающие отображения, действующие из одного $(q_1,q_2$)-квазиметрического пространства в другое. Получены достаточные условия существования точек совпадения двух отображений, действующих в этих пространствах и удовлетворяющих предположению о том, что одно из этих отображений является накрывающим, а другое удовлетворяет условию Липшица. Эти результаты обобщены для многозначных отображений. Доказана устойчивость точек совпадения относительно малых возмущений рассматриваемых отображений.
Библиография: 44 наименования.
О базисности системы собственных и присоединенных функций одномерного оператора Дирака
Authors: Savchuk Artem Markovich
Published: March 2018

В работе изучается одномерная система Дирака на конечном отрезке. Потенциал (матрица размера $2\times 2$) предполагается комплекснозначным и суммируемым. Краевые условия предполагаются регулярными по Биркгофу. Известно, что такой оператор имеет дискретный спектр, а система $\{\mathbf{y}_n\}_1^\infty$ его собственных и присоединенных функций образует базис Рисса (возможно, со скобками) в пространстве $L_2\oplus L_2$. В работе получены результаты о базисности этой системы в пространствах $L_\mu\oplus L_\mu$ при $\mu\ne2$, в пространствах Соболева $W_2^\theta\oplus W_2^\theta$ при $\theta\in[0,1]$ и в пространствах Бесова в $B^\theta_{p,q}\oplus B^\theta_{p,q}$.
Библиография: 23 наименования.
The role of Nigerian youths in effective implementation of security and social development intervention
Authors: Ibrahim Bello
Published: March 2018

This paper investigated the role of youths in effective implementation of security and social development intervention in Nigeria. The Evolutionary Theory of Social Development and Human Development Theory were used to explain the role of youths in effective implementation of security and social development intervention in Nigeria, but the latter was adopted in the study due to its adequacy in addressing the problem and linking the variables under study (youths, security development and social development intervention). The study found that the role of youths in effective implementation of security and social development intervention in Nigeria cannot be over-emphasized. This is because youths have been deeply involved in various self-help projects in various Local and State Governments in Nigeria. Their areas of interventions cover projects involving trade, commerce, security, Home Economics, small and medium term enterprises and agriculture, anti-corruption, counterterrorism, community policing and drug-free clubs among others. The paper concluded that youths have many means of contributing to the development of their societies. Many local and international NGOs are either initiated by the Nigerian youths or co-opt our youths to intervene in the above mentioned areas. Some of them are backed by the government to execute their activities or pressurise the government to be responsive to the citizens in the area of security and social development. This is conditioned by the youths' social and psychological disposition and level of productivity. However, the productivity of the youths and their role in the security and social development of Nigeria depends on the government’s willingness to empower the youths in social, economic and political terms.Keywords: Development, Security, Role of Youths in Nigeria, Social Development Intervention, Youths
Condominio de Apartamentos,Torre de Amsterdam, City Santa Fe, Ciudad de México. *** Apartment Condominium, Amsterdam Tower. City Santa Fe, Ciudad de México.
Authors: García Fuertes Susana , Serrano Orozco Pablo
Published: March 2018

El proyecto se desarrolla en una de las glorieta de la Av. Santa Fe, ubicando una torre en el extremo oriente del terreno. Es un edificio de planta circular de 32 pisos de altura que resuelve la cabeza de manzana. La planta, de 42.09 m de diámetro, alberga un hueco de más de la mitad del mismo, 22.70 m de diámetro, siendo el lugar donde se alojan las circulaciones verticales, realizándose todas las conexiones a través de puentes que consiguen que el movimiento siempre tenga una fachada exterior. Toda la estructura del edificio esta construida con hormigón.***The project is developed in one of the roundabout of Av. San- ta Fe, placing a tower at the extreme east end of the land. It is a circular building of 32 oors that solved the beginning of the block. The plan is 42.09 m in diameter, houses a gap more that half of it, 22.70m in diameter, being the place where the vertical circula- tions can be found, making all the connections through the bridges achieving that the movement always has an exterior façade. The entire structure is built with concrete.
Acceso en el castillo de Portell. *** Entrance in the Castle of Portell
Authors: Ruiz Suaña José Antonio , García Blay Antonio
Published: March 2018

La plaza de l’Esglèsia forma parte del antiguo castillo de Portell. En esta plaza, una antigua escalera, en mal estado y con excesiva pendiente, conectaba el desnivel entre la población y la parte superior del recinto amurallado. Se sustituye la escalera existente construyendo un nuevo acceso más cómodo, ocupando un pequeño solar municipal recayente a la plaza. El nuevo acceso asciende entendiéndose como depositado sobre el terreno natural, facilita un recorrido más pausado y cómodo que invita a parar y sentarse, al encuentro y la conversación. Los nuevos muros construyen un pequeño recinto y, por otra parte, se relacionan con lo existente. Un muro de hormigón configura los límites de la plaza. sin mostrar directamente el nuevo acceso, sino más bien, se sugiere detrás de él e invitan a entrar y recorrerlo.***The church square is part of the old castle of Portell. In this square, an old staircase, in poor condition and with excessive slope, connected the gap between the town and the upper part of the walled enclosure. The existing staircase is replaced by building a new more convenient access, occupying a small municipal plot located next to the square. The new access comes up as if it were deposited on the natural ground, thus facilitates a more leisurely and comfortable promenade that invites to stop and sit down, join and converse. A small enclosure is built with the new walls and, on the other hand, they co-exist with what already existed. A concrete wall configures the boundaries of the square not directly showing the new entrance.
Espai Vert. Estructura como símbolo. *** Espai vert. Structure as symbol
Authors: Molina Manuel Calleja
Published: March 2018

Espai Vert es una singular obra arquitectónica, realizada en Valencia a principios de los años 90. La utilización del hormigón visto en su colosal estructura combinada con una profusa vegetación, la convierten en todo un símbolo arquitectónico de su época. Su imponente materialidad y dimensiones hacen que esta obra pueda catalogarse como brutalista. Del mismo modo, también se encuentra dentro de la arquitectura modular residencial, ya que existe toda una suerte de leyes de combinatoria espacial para encajar sus viviendas en base a una trama regular. En los últimos años esta edificación ha visto incrementar su interés en el mundo académico, y ya son varios los equipos y organismos los que están poniendo de manifiesto su importancia. Este trabajo expone la visión del autor sobre alguno de los puntos más destacados de la obra a través de una entrevista, analiza la parte proyectual y estructural del edificio, y concluye con la importancia y significado del hormigón en esta obra.***Espai Vert is a singular architectonic work built in Valencia in the early 90’s. Its colossal fair-faced concrete structure combined with a profuse vegetation make it an architectural symbol of its time. This work can be catalogued as Brutalist due to its dimensions and materiality. Likewise, it belongs to the residential modular architec- ture, as there are a whole range of space combination rules that t its dwellings according to a regular layout. In recent years academic interest has increased towards this building, and currently various research teams and institutions are exposing its value. The present work exposes the architect’s points of view about some of the main points of this project through an interview, analysing the design and structural part of this building, and concludes with the importance and meaning of concrete in this work.
Viviendas en hormigón prefabricado. La experiencia de GO.DB. en Campanar, Valencia. España. *** Dwellings in prefabricated concrete. The GO.DB. Experience in campanar
Authors: Palomares Figueres Maite , Portalés Mañanós Ana
Published: March 2018

La comunicación presenta el único ejemplo de prefabricación residencial realizada en Valencia en la década de los sesenta, un bloque de ocho viviendas situado en el barrio de Campanar. Para su ejecución se empleó un diseño modular que implicaba, entre otros, el montaje de una planta de fabricación a pie de obra. En el proyecto realizado por los arquitectos GO.DB. se aplicó el concepto de “Viga hueca habitable”, materializada empleando los “Elementos Modulares” del sistema de prefabricación pesada “Modul-Arch”, basado en paneles de hormigón armado. Con este método se pretendía reunir estructura y cerramiento, aunque no fue posible. El paso de la idea a la ejecución final se llevó a cabo con las patentes de varios modelos de utilidad e industriales, necesarios para la realización de las viviendas. La influencia de Miguel Fisac subyace en los estudios de García-Ordoñez sobre el “vacío habitable”. Así también, los sistemas constructivos de los puentes de dovelas prefabricadas de hormigón serán una referencia para la construcción del conjunto de Campanar.***The communication presents the only example of resi- dential prefabrication carried out in Valencia in the 1960s, a block of eight houses located in the Campanar district. For its execution, a modular design was used which involved, among others, the as- sembly of a manufacturing plant on site. In the project carried out by the architects GO.DB. the concept of “Habitable hollow beam” was applied and its materialization using the “Modular Elements” of the heavy prefabrication system “Modul-Arch”, based on reinfor- ced concrete panels. With this method, the intention was to reunite structure and enclosure, although it was not possible. The steps taken from the idea to nal execution was carried out with the pa- tents of several utility and industrial models, necessary for building the houses. In uence of Miguel Fisac underlies García-Ordoñez’s studies on the “habitable beams”. Also, the constructive systems of prefabricated concrete bridge segments will be a reference for the construction of the Campanar complex.
La construcción del lenguaje en el Teatro Popular de Sciacca de Giuseppe y Alberto Samonà. *** The construction of language in the Sciacca popular Theatre by Giuseppe and Alberto Samonà.
Authors: De Marco Paolo , Margagliotta Antonino
Published: March 2018

El Teatro popular de Sciacca de Giuseppe Samonà y su hijo Alberto –dos importantes guras de la arquitectura italiana– es una de las más significativas obras italianas de la segunda mitad del siglo XX. Inaugurado en 2015, después de una larga construcción de cuarenta años, el teatro tiene una original implantación con doble sala; está compuesto por tres grandes volúmenes (un paralelepípedo, un cono y una pirámide) y expresa una arquitectura de la imagen, una idea de un espacio determinado por formas puras y del uso de un único material (el hormigón visto). El uso de tres formas arquetípicas es una vuelta a los orígenes, una idea casi clásica y racional de la arquitectura; al mismo tiempo es la evocación de una perfección arcaica. Para esta idea es fundamental el empleo del hormigón, conceptualmente entendido como material primordial, que participa en la expresión de estabilidad y duración. El edificio se convierte en icono y se inserta en el paisaje como un monumento. En este sentido, esta arquitectura es un homenaje a Le Corbusier, construida a través de la interpretación del lenguaje del gran maestro. El Teatro de Sciacca representa, probablemente, el más notable ejemplo de arquitectura le corbuseriana en Italia.***The Sciacca Popular Theatre by Giuseppe Samonà and his son Alberto - two important figures of Italian architecture - is one of the most significant Italian building of the second half of the 20th century. Inaugurated in 2015, after a forty years long construction, the building has an original layout with two auditoriums; composed by three big volumes (a parallelepiped, a cone and a pyramid) and expresses an architecture of image, an idea of space determined by pure forms and using a single material (the raw concrete). The use of three archetypal forms is a return to the origin, an idea al- most classical and rational of architecture; at the same time is the evocation of an archaic perfection. Within this context, the use of raw concrete is also fundamental. Understood as primitive material, it participates to the expression of stability and durability across the building. As a result, the building is converted to an icon that sits in the landscape like a monument. In this sense, this architecture is a tribute to Le Corbusier, built through the interpretation of the great master language. The Sciacca Theatre represents, probably, the most remarkable example of architecture by Le Corbusier in Italy.
Investigación sobre construcción 3D y sus aplicaciones. *** Research into 3D construction and its applications.
Authors: Muñoz  Montes José Guillermo , Ramírez Collado Vicente , Puchades Valencia José Luis , Martín Rodriguez Joaquín
Published: March 2018

En el presente artículo se pretende dar a conocer el proceso de investigación sobre materiales cementicios enfocados a la impresión 3D. Un grupo de 4 estudiantes de la Universidad Politécnica de Valencia, 3 Ingenieros de la Edificación y 1 Ingeniero de Electrónica y automatismo Industrial, llevan 3 años investigando y desarrollando tanto un dispositivo de impresión 3D móvil como un material cementicio para ser extrusionado por dicho dispositivo y ser capaz de modelar cualquier tipo de figura con tecnología FDM(ADICIÓN DE CAPAS). El principal objetivo de esta investigación es la aplicación de este nuevo sistema constructivo al sector inmobiliario y construir vviiendas, reduciendo riesgos laborales, costes y material de residuo. Caracterizando nuevas dosificaciones cementicias, conseguimos aumentar su Trabajabilidad y Robustez frente a iclemencias metereológicas que puedan afectar a su reología y comportamiento al momento de su puesta en obra mediante bombeo y extrusión mecánica.***This article intends to give an understanding of the process of research into cement materials, focussed on 3D printing. A group of four students at the Universitat Polit.cnica de Val.ncia – three architectural engineers and one electronic and automotive industrial engineer, spent three years researching and developing both a mobile 3D printing device; and a cement material to be extruded by this device and be capable of modelling any type of figure with FDM technology. The main objective of this research is the application of this new construction system to the house-building and real estate sector; reducing occupational hazards, costs and waste material.
Relationship Between Sensory Processing and Participation in Daily Occupations for Children With Autism Spectrum Disorder: A Systematic Review of Studies That Used Dunn’s Sensory Processing Framework
Authors: Ismael Noor , Lawson Lisa Mische , Hartwell Julie
Published: March 2018

Research measuring sensory processing in children with autism spectrum disorder (ASD) has shown variability in terms of measures used and participant ages, contributing to difficulty in interpreting and summarizing the findings of these studies. In an attempt to clarify the status of the literature, we conducted a systematic review of studies that focused on participation in daily occupations and evaluated sensory processing in children with ASD aged 5–13 yr using Dunn’s sensory processing framework. Evidence from 7 studies shows that sensory processing has a significant impact on participation in daily life of children with ASD. Included studies demonstrated medium and low levels of evidence. Additional research using more robust scientific methods is needed.
Nancy Meyers
Authors: Jermyn Deborah
Published: March 2018

Nancy Meyers is acknowledged as the most commercially successful woman filmmaker of all time, described by Daphne Merkin in The New York Times on the release of It’s Complicated as ‘a singular figure in Hollywood – [she] may, in fact, be the most powerful female writer-director-producer currently working’. Yet Meyers remains a director who, alongside being widely dismissed by critics, has been largely absent in scholarly accounts both of contemporary Hollywood cinema, and of feminism and film. Despite Meyers’ impressive track record for turning a profit (including the biggest box-office return ever achieved by a woman filmmaker at that time for What Women Want in 2000), and a multifaceted career as a writer/producer/director dating back to her co-writing Private Benjamin in 1980, Meyers has been oddly neglected by Film Studies to date.

Including Nancy Meyers in the Bloomsbury Companions to Contemporary Filmmakers rectifies this omission, giving her the kind of detailed consideration and recognition she warrants and exploring how, notwithstanding the challenges authorship holds for feminist film studies, Meyers can be situated as a skilled ‘auteur’. This book proposes that Meyers’ box-office success, the consistency of style and theme across her films, and the breadth of her body of work as a writer/producer/director across more than three decades at the forefront of Hollywood (thus importantly bridging the second/third waves of feminism) make her a key contemporary US filmmaker. Structured to meet the needs of both the student and scholar, Jermyn's volume situates Meyers within this historical and critical context, exploring the distinctive qualities of her body of work, the reasons behind the pervasive resistance to it and new ways of understanding her films.
Simultaneous aerosol mass spectrometry and chemical ionisation mass spectrometry measurements during a biomass burning event in the UK: insights into nitrate chemistry
Authors: Reyes-Villegas Ernesto , Priestley Michael , Ting Yu-Chieh , Haslett Sophie , Bannan Thomas , Le Breton Michael , Williams Paul I. , Bacak Asan , Flynn Michael J. , Coe Hugh , Percival Carl , Allan James D.
Published: March 2018

Abstract. Over the past decade, there has been an increasing interest in short-term events that negatively affect air quality such as bonfires and fireworks. High aerosol and gas concentrations generated from public bonfires or fireworks were measured in order to understand the night-time chemical processes and their atmospheric implications. Nitrogen chemistry was observed during Bonfire Night with nitrogen containing compounds in both gas and aerosol phases and further N2O5 and ClNO2 concentrations, which depleted early next morning due to photolysis of NO3 radicals and ceasing production. Particulate organic oxides of nitrogen (PONs) concentrations of 2.8 µg m−3 were estimated using the m ∕ z 46 : 30 ratios from aerosol mass spectrometer (AMS) measurements, according to previously published methods. Multilinear engine 2 (ME-2) source apportionment was performed to determine organic aerosol (OA) concentrations from different sources after modifying the fragmentation table and it was possible to identify two PON factors representing primary (pPON_ME2) and secondary (sPON_ME2) contributions. A slight improvement in the agreement between the source apportionment of the AMS and a collocated AE-31 Aethalometer was observed after modifying the prescribed fragmentation in the AMS organic spectrum (the fragmentation table) to determine PON sources, which resulted in an r2 =  0.894 between biomass burning organic aerosol (BBOA) and babs_470wb compared to an r2 =  0.861 obtained without the modification. Correlations between OA sources and measurements made using time-of-flight chemical ionisation mass spectrometry with an iodide adduct ion were performed in order to determine possible gas tracers to be used in future ME-2 analyses to constrain solutions. During Bonfire Night, strong correlations (r2) were observed between BBOA and methacrylic acid (0.92), acrylic acid (0.90), nitrous acid (0.86), propionic acid, (0.85) and hydrogen cyanide (0.76). A series of oxygenated species and chlorine compounds showed good correlations with sPON_ME2 and the low volatility oxygenated organic aerosol (LVOOA) factor during Bonfire Night and an event with low pollutant concentrations. Further analysis of pPON_ME2 and sPON_ME2 was performed in order to determine whether these PON sources absorb light near the UV region using an Aethalometer. This hypothesis was tested by doing multilinear regressions between babs_470wb and BBOA, sPON_ME2 and pPON_ME2. Our results suggest that sPON_ME2 does not absorb light at 470 nm, while pPON_ME2 and LVOOA do absorb light at 470 nm. This may inform black carbon (BC) source apportionment studies from Aethalometer measurements, through investigation of the brown carbon contribution to babs_470wb.