bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pulsational properties of ten new slowly pulsating B stars
Authors: Fedurco M. , Paunzen E. , Hümmerich S. , Bernhard K. , Parimucha Š. 
Published: December 2019

Context. Slowly pulsating B (SPB) stars are upper main-sequence multi-periodic pulsators that show non-radial g-mode oscillations driven by the κ mechanism acting on the iron bump. These multi-periodic pulsators have great asteroseismic potential and can be employed for the calibration of stellar structure and evolution models of massive stars.
Aims. We collected a sample of ten hitherto unidentified SPB stars with the aim of describing their pulsational properties and identifying pulsational modes.
Methods. Photometric time series data from various surveys were collected and analyzed using diverse frequency search algorithms. We calculated astrophysical parameters and investigated the location of our sample stars in the log Teff vs. log L/L⊙ diagram. Current pulsational models were calculated and used for the identification of pulsational modes in our sample stars. An extensive grid of stellar models along with their g-mode eigenfrequencies was calculated and subsequently cross-matched with the observed pulsational frequencies. The best-fit models were then used in an attempt to constrain stellar parameters such as mass, age, metallicity, and convective overshoot.
Results. We present detected frequencies, corresponding g-mode identifications, and the masses and ages of the stellar models producing the best frequency cross-matches. We partially succeeded in constraining stellar parameters, in particular concerning mass and age. Where applicable, rotation periods have been derived from the spacing of triplet component frequencies. No evolved SPB stars are present in our sample. We identify two candidate high-metallicity objects (HD 86424 and HD 163285), one young SPB star (HD 36999), and two candidate young SPB stars (HD 61712 and HD 61076).
Conclusions. We demonstrate the feasibility of using ground-based observations to perform basic asteroseismological analyses of SPB stars. Our results significantly enlarge the sample of known SPB stars with reliable pulsational mode identifications, which provides important input parameters for modeling attempts aiming to investigate the internal processes at work in upper main-sequence stars.
Propagation of waves above a plage as observed by IRIS and SDO
Authors: Kayshap P. , Srivastava A. K. , Tiwari S. K. , Jelínek P. , Mathioudakis M. 
Published: December 2019

Context. Magnetohydrodynamic waves are proposed as the mechanism that transport sufficient energy from the photosphere to heat the transition region (TR) and corona. However, various aspects of these waves, such as their nature, propagation characteristics, and role in the atmospheric heating process, remain poorly understood and require further investigation.
Aims. We aim to investigate wave propagation within an active-region plage using IRIS and AIA observations. The main motivation is to understand the relationship between photospheric and TR oscillations. We identify the locations in the plage region where magnetic flux tubes are essentially vertical, and further we discuss the propagation and nature of these waves.
Methods. We used photospheric observations from AIA (i.e., AIA 1700 Å) as well as TR imaging observations (IRIS SJI Si IV 1400.0 Å). We investigated the propagation of the waves into the TR from the photosphere using wavelet analysis (e.g., cross power, coherence, and phase difference) with the inclusion of a customized noise model.
Results. A fast Fourier transform algorithm shows the distribution of wave power at photospheric and TR heights. Waves with periods between 2.0 and 9.0 min appear to be correlated between the photosphere and TR. We exploited a customized noise model to estimate the 95% confidence levels for the IRIS observations. On the basis of the sound speed in the TR and estimated propagation speed, these waves are best interpreted as slow magneto acoustic waves (SMAWs). It is found that almost all locations show correlation and propagation of waves over a broad range of periods from the photosphere to the TR. Our observations suggest that the SMAWs spatial occurrence frequency is stronly correlated between the photosphere and transition region within plage areas.
Magnetic Rayleigh–Taylor instability at a contact discontinuity with an oblique magnetic field
Authors: Vickers E. , Ballai I. , Erdélyi R. 
Published: December 2019

Aims.We investigate the nature of the magnetic Rayleigh–Taylor instability at a density interface that is permeated by an oblique homogeneous magnetic field in an incompressible limit.Methods.Using the system of linearised ideal incompressible magnetohydrodynamics equations, we derive the dispersion relation for perturbations of the contact discontinuity by imposing the necessary continuity conditions at the interface. The imaginary part of the frequency describes the growth rate of waves due to instability. The growth rate of waves is studied by numerically solving the dispersion relation.Results.The critical wavenumber at which waves become unstable, which is present for a parallel magnetic field, disappears because the magnetic field is inclined. Instead, waves are shown to be unstable for all wavenumbers. Theoretical results are applied to diagnose the structure of the magnetic field in prominence threads. When we apply our theoretical results to observed waves in prominence plumes, we obtain a wide range of field inclination angles, from 0.5° up to 30°. These results highlight the diagnostic possibilities that our study offers.
Disseminierte Tuberkulose imitiert metastasiertes Magenkarzinom – ein Fallbericht
Authors: Voit Florian Maximilian , Abdelhafez Mohamed , Rothe Kathrin , Slotta-Huspenina Julia , Gaa Jochen , Schmid Roland M. , Spinner Christoph Daniel 
Published: December 2019

ZusammenfassungBei zuletzt stabiler nach in den Jahren davor steigender Inzidenz der aktiven Tuberkuloseerkrankung in Deutschland sind zunehmend auch extrapulmonale Manifestationen von differenzialdiagnostischer Bedeutung. Insbesondere bei Verdacht auf eine metastasierte Tumorerkrankung kommt die Tuberkulose differenzialdiagnostisch in Betracht. Wir berichten über einen 77-jährigen Patienten, der sich mit einseitigen Beinschmerzen und B-Symptomatik vorstellte. Neben einer osteolytischen Sakralwirbelkörper(SWK)-1-Läsion ergab sich bildgebend der Verdacht auf ein metastasiertes Magenkarzinom. In den gewonnenen Biopsien zeigten sich nekrotisierende Granulome mit Riesenzellen, im Verlauf gelang der kulturelle und molekularbiologische Nachweis von Mycobacterium tuberculosis anstelle neoplastischen Gewebes. Nach Sicherung einer disseminierten Tuberkulose mit ossärer Beteiligung erfolgte eine antibiotische Therapie nach nationalen Leitlinien über insgesamt neun Monate. Klinisch und radiologisch zeigte sich in der Abschlussuntersuchung nach Therapieende eine Regredienz der Befunde im Sinne einer definitiven Heilung.
Reconsidering Nutritional Support in Critically Ill Patients
Authors: Korwin Amy , Honiden Shyoko 
Published: December 2019

AbstractProvision of nutrition is universally considered a key element of supportive care in the intensive care unit (ICU). Despite this, there is a relative dearth of high-quality data, and where available, results are often conflicting. As we understand more about the process of recovery for critically ill patients, ICU nutrition might be better thought of as active therapy that can and should be tailored to the needs of patients in more dynamic ways. With the advent of the programmable feeding pump, continuous feeding modes have become the default manner in which patients are fed in many ICUs. In the modern ICU era, where the goal of critical care has shifted from mere survival to surviving and living well, non-continuous modes of feeding may have advantages related to fewer feeding interruptions, ICU mobilization, optimizing protein synthesis and autophagy, as well as restoring gastrointestinal physiology and the circadian rhythm. More research is desperately required to provide a framework in order to guide best nutrition practices for clinicians at the bedside.
Sleep in the Intensive Care Unit: Strategies for Improvement
Authors: Dorsch Jennifer J. , Martin Jennifer L. , Malhotra Atul , Owens Robert L. , Kamdar Biren B. 
Published: December 2019

AbstractSleep in the intensive care unit (ICU) is considered to be subjectively poor, highly fragmented, and sometimes referred to as “atypical.” Although sleep is felt to be crucial for patient recovery, little is known about the association of sleep with physiologic function among critically ill patients, or those with clinically important outcomes in the ICU. Research involving ICU-based sleep disturbance is challenging due to the lack of objective, practical, reliable, and scalable methods to measure sleep and the multifactorial etiologies of its disruption. Despite these challenges, research into sleep-promoting techniques is growing and has demonstrated a variety of causes leading to ICU-related sleep loss, thereby motivating multifaceted intervention efforts. Through a focused review of (1) sleep measurement in the ICU; (2) outcomes related to poor sleep in the ICU; and (3) ICU-based sleep promotion efforts including environmental, nonpharmacological, and pharmacological interventions, this paper examines research regarding sleep in the ICU and highlights the need for future investigation into this complex and dynamic field.
A Case of Transposition of Great Arteries with Ventricular Septal Defect and Mesocardia Presenting for Neurosurgery
Authors: Biswas Soniya , Thakkar Keta , Ajayan Neeraja , Hrishi Ajay Prasad , Sethuraman Manikandan 
Published: December 2019

Abstract
Congenitally corrected transposition of great arteries (CC-TGAs) associated with a ventricular septal defect (VSD) presents with cyanotic spells and systemic complications such as brain abscess. In mesocardia, the heart lies in the midline with no apex seen on the left side. We report the anesthetic management of a child with CC-TGA, VSD, and mesocardia presenting with parietal brain abscess for neurosurgery. The significant anesthetic challenges include maintenance of peripheral vascular resistance lower than systemic vascular resistance, prevention of air embolism and paradoxical embolism, avoidance of hyperviscosity in addition to avoiding any rise in intracranial pressure, and maintenance of cerebral perfusion pressure.
Third and fifth harmonic responses in viscous liquids
Authors: Albert S , Michl M , Lunkenheimer P , Loidl A , Déjardin P M , Ladieu F 
Published: December 2019

Abstract
We review the works devoted to third and fifth harmonic susceptibilities in glasses, namely

and

. We explain why these nonlinear responses are especially well adapted to test whether or not some amorphous correlations develop upon cooling. We show that the experimental frequency and temperature dependences of

and of

have anomalous features, since their behavior is qualitatively different to that of an ideal dipolar gas, which is the high temperature limit of a fluid. Most of the works have interpreted this anomalous behavior as reflecting the growth, upon cooling, of amorphously ordered domains, as predicted by the general framework of Bouchaud and Biroli (BB). We explain why most—if not all—of the challenging interpretations can be recast in a way which is consistent with that of BB. Finally, the comparison of the anomalous features of

and of

shows that the amorphously ordered domains are compact, i.e. the fractal dimension d

f
is close to the dimension d of space. This suggests that the glass transition of molecular liquids corresponds to a new universality class of critical phenomena.
A study of TOF-MIEZE reflectometry for nanomagnetic dynamics
Authors: Hino Masahiro , Oda Taturo , Endo Hitoshi , Yamada Norifumi L. , Seto Hideki , Ohshita Hidetoshi , Kawabata Yuji 
Published: December 2019

Abstract
Through the combination of neutron reflectometry and modulated intensity by zero effort instrument (MIEZE) technique, it is possible to detect the inelastic and quasi-elastic scattering on the surface and at the interface of thin films. In particular, the combination of the time-of-flight (TOF)-MIEZE technique and polarized neutron reflectometry enables us to study the nanomagnetic spin dynamics in a thin film. We show experimental results of TOF-MIEZE signals of neutrons reflected by the Fe thin layer and Fe/Si multilayer as the feasibility of new technique for investigation of nanomagnetic dynamics.
Cosmology of f-essence with inhomogeneous viscous fluid
Authors: Myrzakul S , Arzimbetova M , Imankul M , Myrzakulov R 
Published: December 2019

Abstract
F-essence is a generalized form of fermion fields. In this paper, we study the dynamics of f-essence with a viscous fluid in the flat Friedmann-Robertson-Walker universe. Various types of viscous fluids are analyzed and the possibility of reproducing the current accelerating expansion of the Universe is investigated. The cosmological parameters of this model are determined. It is shown that accelerated expansion can also be obtained with a viscous fluid of the fermion field, as in the case of non-interacting perfect fluid considered in most modern models of accelerated expansion of the Universe.
Making decisions in national energy markets with bifurcation analysis
Authors: Redondo J M , Ibarra-Vega D , Becerra-Fernandez M , Olivar-Tost G 
Published: December 2019

Abstract
A mathematical model for international integration of national energy markets was proposed by references. Lowering the dimension conveniently to 3 dimensions using system dynamics methodology, the dynamical system obtained could present a commutation region proposing that the system is a piecewise smooth system PWS with local bifurcations: Saddle-node and transcritical bifurcations. The bifurcation diagram is interpreted as a map of all possible system prospective scenarios, in this sense, the making decisions over systems have leverage points in its bifurcation parameters. In the national energy markets case, the bifurcations parameters depend on the generation lifetime and the investments rate, then two trend scenarios were defined: the absolute disappearance of the national supply of electricity or convergency at an equilibrium value of the national supply with which it is possible to serve the market. It is concluded that any investment and small useful life of the generation plants is not enough for attending the national electricity demand in the medium and long term.
Comparison between electric vehicle technology and gasoline in regular operation. Pilot experience in public service
Authors: Durán E A Velandia , Suárez J P Rojas , Abril M S Orjuela , Botia G C Prada 
Published: December 2019

Abstract
Urban transport is an indispensable component for the development of cities, however, the massive use of motorized modes of transport with polluting technologies has generated the non-sustainability of the sector. Colombian cities are no strangers to this problem and as an improvement strategy, the testing and implementation of electric transport technologies is considered as an opportunity for modernization, efficient use of energy, reduction of emissions and energy diversification taking advantage of the energy resources available in Colombia. In Bogotá, the taxi fleet, due to its high energy demand and responsibility in polluting emissions, is a segment where electric vehicles can offer benefits to the operator, the citizen and the city. A description of Bogota‘s taxi fleet, the presentation of electric vehicle technology and a comparison between a gasoline vehicle and an equivalent electric vehicle in regular operation are presented, as well as some results from the pilot‘s early years. The technology has demonstrated reliability and efficiency, benefits to drivers and significant savings in greenhouse gases, but requires new incentives for massification.
Design and content validity verification of an instrument to evaluate access to hospital infrastructure in Colombia
Authors: Martinez R P , Bueno L A , Gómez F R , Tiria L C 
Published: December 2019

Abstract
The present study determined the content validity of an instrument to assess Colombian health institutions physical access. The questionnaire was designed by the authors of the study, based on the Colombian Technical Standard of Accessibility to the Physical Environment 6047 framework. The content validity was carried out by six experts. To the score the content validity, the researchers designed a qualification template, and calculated a content validity index dividing the relevance and pertinence score of each item/question by the number of experts who evaluated the question. Based on methodological recommendations from the literature, items with content validity index ≤ 0.78 were eliminated from the questionnaire or modified in their wording in accordance with the recommendations of the expert reviewers. The content validity index of the scale was found to be excellent (0.95). In total, 2 questions were eliminated due to their low relevance index (≤ 0.78). The final questionnaire has 69 questions. The importance of determining the validity of the scale in the present study, lies in the fact that a firm scientific basis must be constructed to verify whether such an instrument accurately measures reality.
Security strategy for vulnerabilities prevention in the development of web applications
Authors: Vargas S , Vera M , Rodriguez J 
Published: December 2019

Abstract
In recent years, Higher Education Institutions through their Systems departments have strengthened security for the development of applications on web environment, because of their vulnerability to possible computer attacks. This research proposes a security strategy to reduce the risk presented by the web applications developed in the systems department of the Simón Bolívar University, in San José de Cúcuta, Colombia, based on a diagnosis of the current state of its security policy compared to other institutions of the department of Norte de Santander, the analysis of current regulations and the state of the art of security in web applications, as an object of study. This strategy of safe web software development arises in order to establish the security parameters that should be applied by the web software developers of the Institution, shielding the developed applications and thus guaranteeing the integrity of the information that is manipulated through them. The strategy was validated through expert judgment in the field of web application development, emphasizing the importance of applying it to prevent vulnerabilities in institutional web software and thus provide greater reliability in the management of information.
Discussion on Microbial Remediation Technology of Heavy Metal Contaminated Soil
Authors: Feng Hao 
Published: December 2019

Abstract
The key issue in the world is to treat heavy metal contaminated soil. This is because environmental pollution, especially the intrusion of heavy metals in the soil, has polluted the ecological environment chain and threatened human survival. It has happened in all countries of the world. At present, through research on the source characteristics of heavy metals and the destruction behavior in soil, all countries have new research topics. This paper analyzes the soil heavy metal pollution and microbial remediation technology, and proposes how to use microbial technology to take action against heavy metal pollution in soil. The corresponding intentions of the measures with strong sexuality and effectiveness, as well as suggestions which are expected to have reference value for solving soil pollution problems.
Research on the Distribution Law of Influencing Factors of Landslides in Wumeng Mountainous Area of Guizhou
Authors: Zhang Cheng , Zhang Hui , Zhang Guangcheng , Hu Xinli , Zhang Hanbin 
Published: December 2019

Abstract
Taking Wumeng mountainous area in Guizhou province as the study area, by collecting landslide data and on-the-spot investigation records, a spatial database of 939 landslides and related influencing factors on GIS platform are established. The influence of altitude, relative height difference, slope angle, slope aspect, the shortest distance from landslide to rivers is studied. The results show that the number of landslides decreases exponentially with the shortest distance to the rivers. The most important factor affecting landslides distribution is topography and morphological, especially slope. The research can help human beings get along better with the surrounding nature environment and provide a basis and reference for environmental governance, landslide prevention and mitigation work.
Research on the dynamic relationship between environmental growth and economic quality based on VAR model
Authors: Guici Chen , Zuo Zhang , Yongmei Ding 
Published: December 2019

Abstract
In the last few years, there has been a rapidly growth in the china of economic, especially from 2010 to 2017. However, environmental quality paid a heavy price. This article established the VAR model of economy environment in China and we used the methods of generalized impulse response and Variance decomposition to carry out an empirical analysis of the dynamic correlations among economic evolution and environmental quality based on the annual data which is during the years of 2000-2016 in China. The results point out GDP shows a positive response to Solid waste emission in generally, and it picks up a significant part (71.1%) of the variations in GDP. However, there is negative impulse response of Exhaust gas emission to GDP in the whole process. Finally, it is worth noting that one standard deviation shock to Wastewater emission, the positive and negative impulse response of Wastewater emission on the GDP appear alternately.
Effect of Spraying Brassinolide on Fruit Quality of Citrus grandis cv. ‘Huangjinmiyou’ and ‘Hongroumiyou’
Authors: Wang Yan , Fu Xiaoke , He Wen , Chen Qing , Wang Xiaorong 
Published: December 2019

Abstract
Brassinolide (BR) is one of the new green and environmental-friendly plant growth regulators. ‘Huangjinmiyou’ and ‘Hongroumiyou’ are mutated from Citrus grandis cv. ‘Guanximiyou’ including rich nutritional ingredients. When they are introduced into Sichuan Province, the fruits showed lower sugar accumulation and higher acid content than that in Fujian Province. We compared the fruit quality by spraying 0.02, 0.04, and 0.06 mg·L-1 of brassinolide to improve the fruit quanlity of pummelo production in Sichuan Province. The results showed that spraying approximate concentration of brassinolide could increase the flesh weight and edible rate, and ease granulation index of ‘Huangjinmiyou’ and ‘Hongroumiyou’. Also, brassinolide could significantly promote the accumulation of total soluble solid, vitamin C and total sugar. The TSS-acid ratio continuously increased with the increase of brassinolide, obviously improving the taste quality. The best effect on the improvement of fruit quality was selected by 0.06 mg·L-1 of brassinolide. This study will provide related basis for high-quality and high-efficient production of pummelo cultivars in Sichuan Province.