bluuebunny/crossref_metadata_2025 huggingface dataset:
Ações de responsabilidade social nas academias de ginástica de uma cidade no Norte do Brasil
Authors: Araújo-Gomes Rafaela Cristina , Gonçalves Gabriel dos Santos , Borba-Pinheiro Claúdio Joaquim
Published: April 2020

Introdução: As academias de ginástica são empresas voltadas para a prática de atividade física. Ações de responsabilidade social empresarial estão relacionadas a posturas, comportamentos e ações voltadas à promoção da qualidade de vida e bem-estar do público interno e externo da empresa.Objetivo: Examinar as ações de responsabilidade social que são realizadas pelas academias, na cidade de Tucuruí-PA.Métodos: Estudo transversal do qual participaram seis academias da cidade de Tucuruí-PA. A coleta de dados foi feita através de um questionário semiestruturado com questões fechadas, abrangendo cinco áreas de responsabilidade social: 1) Bom relacionamento com os clientes; 2) Ações para a comunidade; 3) Tratamento adequado com os funcionários; 4) Legalização; e 5) Responsabilidade com o meio ambiente, realizado em forma de entrevista com os proprietários das academias.Resultados: Observou-se que a área do relacionamento com os clientes é a mais importante para as academias avaliadas. Todavia, de modo geral, há, também, uma preocupação com as outras áreas abordadas.Conclusão: As academias analisadas buscavam realizar ações de responsabilidade social dentro das cinco áreas abordadas neste estudo. Os resultados foram discutidos.Social Responsibility actions in a Fitness Center of a North Brazilian CityIntroduction: The fitness centers are companies dedicated to the practice of physical activity. Actions of corporate social responsibility are related to postures, behaviors and actions aimed at promoting the quality of life and well-being of the internal and external public of the company.Objective: To examine the actions of social responsibility that are carried out by the fitness centers on the city of Tucuruí-PA.Methods: Cross-sectional study involving six fitness centers from the city of Tucuruí-PA. Data collection was done through a semi-structured questionnaire with closed questions, covering five areas of social responsibility: 1) Clients relationship; 2) Actions for the community; 3) Appropriate treatment with employees; 4) Legalization; and 5) Environment responsibility. It was applied as interview to the fitness centers’ owners.Results: Relationship with the clients was the most important area observed for the fitness center. However, in general, there is also a concern with the other addressed areas.Conclusion: The fitness centers evaluated sought to carry out social responsibility actions within the five areas addressed in this study. Results were discussed.
Trabalho em rede: um modelo eficaz na gestão do esporte do SESC Pernambuco
Authors: Souto Filho José Morais , Apolinário Vanessa Souza
Published: April 2020

Introdução: A gestão do esporte, vem se mostrando um campo de atuação em expansão para os profissionais de educação física. O SESC Pernambuco (SESC-PE), desempenha um modelo diferenciado de gestão do esporte, que favorece o fomento do esporte para a qualidade de vida, a iniciação esportiva e o desenvolvimento de atletas de alto rendimento.Objetivo: Descrever e examinar o modelo de gestão esportiva adotado pelo SESC-PE, sua estrutura organizacional, metodologia de trabalho e identificar os seus pontos positivos.Métodos: Trata-se de uma pesquisa descritiva, de caráter exploratório. Os dados foram obtidos, mediante informações documentais, disponibilizados pelo Departamento Regional e disponíveis no site oficial do SESC-PE.Resultados: O SESC-PE é administrado por um Conselho Deliberativo. As ações do Departamento Físico de Esportes são avaliadas por vários Departamentos antes de proceder à execução. As 20 unidades do SESC-PE adotam uma rede de comunicação e um modelo de ações baseadas na unicidade, fato que contribui para a padronização e qualidade dos projetos. As ações desenvolvidas pela DFE em toda a regional são previstas e planejadas no ano anterior, através do Plano Anual de Trabalho.Conclusão: O modelo de gestão esportiva adotado pelo SESC-PE é um mecanismo eficaz, pois o seu processo de avaliação de múltiplos projetos (rede) fornece uma análise de diferentes perspectivas profissionais.Network: an Effective Model in the Sport Management of Sesc PernambucoIntroduction: The sports management is an expanding field of action for Physical Education professionals. SESC Pernambuco (SESC-PE) performs a differentiated sports management model which favors the promotion of sports for quality of life, sports initiation and the development of high-performance athletes.Objective: Describe and examine the sports management model adopted by SESC-PE, its organizational structure, work methodology and identify its strengths.Methods: This is a descriptive exploratory research. The data were obtained through documentary information, made available by the Regional Department and available on the official website of SESC-PE.Results: SESC-PE is administered by a Deliberative Board. The actions of the Sports Structural Department are evaluated by several Departments before proceeding to execution. The 20 units of SESC-PE adopt a network communication and a model of actions based on the unicity, fact that contributes to the standardization and quality of the projects. The actions developed by the DFE throughout the regional is anticipated and planned in the previous year, through the Annual Work Plan.Conclusion: The sports management model adopted by SESC-PE is an effective mechanism since its multiple project evaluation process provides an analysis of different professional perspectives.
Preparation of 2-phospholene oxides by the isomerization of 3-phospholene oxides
Authors: Bagi Péter , Herbay Réka , Péczka Nikolett , Mucsi Zoltán , Timári István , Keglevich and György
Published: April 2020

A series of 1-substituted-3-methyl-2-phospholene oxides was prepared from the corresponding 3-phospholene oxides by double bond rearrangement. The 2-phospholene oxides could be obtained by heating the 3-phospholene oxides in methanesulfonic acid, or via the formation of cyclic chlorophosphonium salts. Whereas mixtures of the 2- and 3-phospholene oxides formed, when the isomerization of 3-phospholene oxides was attempted under thermal conditions, or in the presence of a base. The mechanisms of the various double bond migration pathways were elucidated by quantum chemical calculations.
An Integrative Evaluation of the Efficacy of a Directional Microphone and Noise-Reduction Algorithm under Realistic Signal-to-Noise Ratios
Authors: Kuk Francis , Slugocki Christopher , Korhonen Petri
Published: April 2020

Abstract Background Many studies on the efficacy of directional microphones (DIRMs) and noise-reduction (NR) algorithms were not conducted under realistic signal-to-noise ratio (SNR) conditions. A Repeat-Recall Test (RRT) was developed previously to partially
address this issue. Purpose This study evaluated whether the RRT could provide a more comprehensive understanding of the efficacy of a DIRM and NR algorithm under realistic SNRs. Possible interaction with listener working memory capacity (WMC) was assessed. Research
Design This study uses a double-blind, within-subject repeated measures design. Study Sample Nineteen listeners with a moderate degree of hearing loss participated. Data Collection and Analysis The RRT was administered with participants wearing the
study hearing aids (HAs) under two microphones (omnidirectional versus directional) by two NR (on versus off) conditions. Speech was presented from 0° at 75 dB SPL and a continuous noise from 180° at SNRs of 0, 5, 10, and 15 dB. The order of SNR and HA conditions was
counterbalanced across listeners. Each test condition was completed twice in two 2-hour sessions separated by one month. Results The recall scores of listeners were used to group listeners into good and poor WMC groups. Analysis using linear mixed-effects models revealed significant
effects of context, SNR, and microphone for all four measures (repeat, recall, listening effort, and tolerable time). NR was only significant on the listening effort scale in the DIRM mode at an SNR of 5 dB. Listeners with good WMC performed better on all measures of the RRT and benefitted
more from context. Although DIRM benefitted listeners with good and poor WMC, the benefits differed by context and SNR. Conclusions The RRT confirmed the efficacy of DIRM and NR on several outcome measures under realistic SNRs. It also highlighted interactions between WMC and
sentence context on feature efficacy.
MEASURING EMOTIONAL INTELLIGENCE AMONG BUSINESS SCHOOL STUDENTS IN INDIA
Authors: Senthil B.Arul , Ravindran D. , Kumar S.A. Surya
Published: April 2020

This paper examines the Trait Emotional Intelligence (TEI) of business school students using the Trait Emotional Intelligence Questionnaire‐Short Form (TEIQ). The primary objective of the research is to study the wellbeing, self‐control, emotionality, and sociability of students in a various business schools and to identify the differences in students’ emotional intelligence (EI) with regards to students’ undergraduate (UG) degree, family type, work experience, brought up place and gender. This survey was carried out among the MBA students of a various B‐schools in India and data were collected from 141 respondents. The researchers employed T‐Test & one‐way Anova to test all variables using descriptive statistics for better understanding. Many researchers proved that emotional intelligence helps in successful leadership irrespective of domains. Researchers strongly believe students who pursue management degrees will one day become business leaders. Therefore, there is a scope in EI for business students. Many research papers on EI for leaders have been published but only few have been published on EI for business students. One of the results from this study shows that students who brought up in semi urban cities exhibit significant differences in wellbeing factor of TEI
PROBLEMATICS OF AMENDMENTS MADE IN TENDER DOCUMENTS IN PUBLIC PROCUREMENT – THE PERSPECTIVE OF THE COURT OF JUSTICE OF THE EUROPEAN UNION
Authors: Skrastina Una , Gaile Dzeina
Published: April 2020

During the procurement process, it is often found that the tenders submitted are deficient, for example, required documents are not submitted. Given the amount of information to be provided, the types of errors are different and can apply to the qualification of the tenderer, its technical or financial tender and other aspects. In each of these situation procurement commission must evaluate whether it is possible to correct the error or the tender should be rejected. The Public Procurement Law does not contain very detailed and clear regulation on this situation. Therefore decisions of contracting authorities are often challenged and found to be unfounded. It justifies the topicality of the study. The aim of the study is to summarize and analyze the findings of the European Court of Justice to determine what legal principles and considerations have to be taken into account in such situations and to make recommendations for further action in Latvia. Research methods used are descriptive, comparative and analytical method. The study will result in suggestions as to what conditions should be considered when assessing the possibility of corrections of the tender.
Effect of the variation of K+/(Ca2++Mg2+) ratios on strawberry (Fragaria annanas) growth cultivated on soilless crop system
Authors: Amina Latigui , Mohamed Ali Bekada Ahmed , Ahmed Latigui
Published: April 2020

The study was conducted on soilless crop system. It has evaluated the effect of different K+/ (Ca2++Mg2+) ratios (Rp): 0.28, 0.5, 0.83, 1.14 and 1.42 on the growth characteristic of strawberry (Fragaria ananassa). The low Rp under 0.28 and the highest one 1.42 decreased significantly the height plant, leaf length, leaf width, petiole length, crown diameter, fresh and dry weight. The variation of Rp on the dry and fresh weight was correlated with R2 = 0.26 and 0.45 respectively. The same ratios decreased the main macro nu-trients K+, Ca2+ and Mg2+and the micronutrients Fe, Mn, Cu and Zn absorp-tion. The response of the Rp variation on the K concentration in the sap of the petiole and on that of the tissues were correlated with R2 = 0.81 and 0.97 respectively. The electrical conductivity (EC) varied from 1.8 to 2 dS.m-1 in all Rp. Its response to the variation of Rp was correlated (R2= 0.42) . The pH decreases with increasing Rp. It ranged between 6.8 to 7for all treat-ments. Its response to the variation of Rp was slightly correlated (R2=0.082).
The evaluation of the larvicidal activity of the essential oil extracted from Officinalis rosmarinus on morphometric parameters Culex pipiens
Authors: Chafik Mhamdia , Afaf Baki
Published: April 2020

This study was accomplished with the intention of developing a new strategy of conflict against the grubs of C pipiens, vectors of parasitical diseases, by bringing a major interest in the use of essential oils of plants as bio-insecticide. The method of job which we adopted, aimed at the valuation of the larvicide activity of the plant material of R officinalis in this species of mosquito collected from the MEKKERA wadi of the city of SIDI BEL ABBES. The results obtained show that the essential oil extracted from R officinalis manifested toxicity towards fourth-stage larvae in Culex pipiens, with a concentration-response relationship. Analysis of the data shows that R. officinalis causes a reduction in several morphometric parameters such as the width of the thorax, the weight and the body volume of the larval stage 4 individuals of C pipiens compared to the controls.
An International Response to the Workforce Crisis in Radiology Services in the UK
Authors: Proctor Robin
Published: April 2020

What is the Global Fellows Programme?
This provides Radiologists with an opportunity to work in England as a Global Fellow for 3 years. Global Fellows perform a mixture of independent service work (60%) and develop their skills in a subspecialty (40%). Completion of CESR is at their discretion and early experience is that this is popular both as a credential and for future career planning. The three-year Global Fellowship is placement, not a migratory program
STRATEGI KOMUNIKASI DA’WAH USTADZ MUSTOFA MUNTASAM DALAM MENANAMKAN NILA-NILAI KEISLAMAN DI KAMPUNG DUSUN PALIRANGAN-SOLOKURO-LAMONGAN
Authors: HANIF MUHAMMAD , SARIFUDIN MUHAMMAD AMAL
Published: April 2020

Tujuan Penelitan: Mengetahui Strategi komunikasi Da’wah Ustadz Mustofa Muntasam Dalam Menanamkan Nilai nilai keislaman Di Kampung Dusun Palirangan-Solokuro-Lamongan. Metode Penelitian: Kualitatif. Hasil Penelitian: Strategi Komunikasi Da’wah Ustadz Mustofa Muntasam dalam Menanamkan Nilai-Nilai Keislaman di Kampung Dusun Palirangan-Solokuro-Lamongan,  adalah menggunakan Teori Stimulus-Respon. Adapun stimulus tersebut diantaranya adalah: (1) Melakukan pendekatan kepada para tokoh baik laki-laki maupun perempuan yang kiranya bisa membantu dalam penyebaran da’wah beliau. (2) Mengadakan Kajian-kajian sebagai wadah dan sarana menanamkan nilai-nilai Keislaman  (3) Menjadikan pondok pesantren sebagai pusat berda’wah
INTERVENSI LEMBAGA DALAM MENUMBUHKAN PARTISIPASI MASYARAKAT
Authors: ANAM AHMAD MISBAHUL
Published: April 2020

Tujuan Penelitian: Penelitian ini bertujuan untuk mengetahui intervensi lembaga dalam menumbuhkan partisipasi masyarakat. Metode Penelitian: Kualitatif. Hasil Penelitian: Bentuk perubahan masyarakat yang paling ideal adalah tumbuhnya partisipasi. Namun demikian, partisipasi tidak bisa berjalan sendiri. Ia memerlukan satu sentuhan intervensi dari lembaga dengan unit-unit kerjanya. Ada unit yang bekerja pada aspek pembinaan, aspek hubungan dengan masyarakat, aspek pembiayaan dan bahkan aspek advokasi hukum. Untuk melihat satu model intevensi partisipatif kelembagaan, proyek di kawasan Lembur Kaung Sukabumi menjadi konsen peneliti untuk membedahnya. Pokok utama keberhasilan dalah penerimaan masyarakat kepada tenaga da’i yang dikirim dan selanjutnya dapat meningkatkan manfaat aset wakaf yang ada. Kuncinya, penggalian potensi masyarakat sehingga ikut berpartisipasi lebih banyak. Dari sisi lembaga, unit-unit kerja yang ada harus bergerak sesuai tupoksinya dengan kordinasi pimpinan terkait sebagai komando. Unit kegiatan intervensi pada aspek model pendidikan, begitu juga dengan aspek da’wah, pembiayaan dan kegiatan-kegiatan pemberdayaan yang lainya. Dengan tujuan akhirnya adalah terwujudnya komunitas yang mandiri (qaryah thayyibah) dengan dasar pijakan nilai-nilai Islam. Dalam jangka yang lebih panjang, seiring dengan kemajuan masyarakat dan keperluan tenaga pendamping masyarakat, dapat direncanakan perumahan pengelola ataupun tenaga-tenaga beru disekitar aset wakaf.
MODEL PENDIDIKAN KADER DA’I MOHAMMAD NATSIR
Authors: HABIBI UJANG
Published: April 2020

Tujuan Penelitian: Tujuan penelitian ini adalah untuk menemukan realitas dan model pendidikan kader da’i yang telah dilakukan oleh Mohammad Natsir. Metode Penelitian: Sebagai studi tentang sejarah intelektual mengenai pemikiran dan gerakan seorang tokoh Islam, pendekatan yang digunakan adalah cara historis dan sosiologis yang diperoleh melalui studi pustaka (library research). Hasil Penelitian: Penelitian ini merupakan hasil penelitian kualitatif tentang Model Pendidikan Kader da’i Mohammad Natsir. Dari hasil penelitian tentang Model Pendidikan pengajar Mohammad Natsir diperoleh beberapa temuan sebagai berikut: Pertama, Pendidikan kader da’i oleh M. Natsir adalah sebuah kebutuhan, hal ini telah ditunjukkan dengan mengirimkan anak-anak ideologis / bukan anak biologis untuk belajar ke Timur Tengah terutama ke Arab Saudi dalam upaya melengkapi diri untuk menjadi pengkhotbah yang diharapkan ikut ambil bagian untuk membimbing orang dan bangsa. Kedua, Model Pendidikan Kader Da’i Mohammad Natsir mengandung setidaknya tiga elemen utama yaitu tujuan pendidikan, program dan proses. Pada elemen tujuan, semua keterlibatan M. Natsir baik dalam pendidikan atau dalam bentuk lain, harus bertujuan untuk berda’wah menegakkan hukum Islam. Pada unsur program, pendidikan kader da’i yang dilakukan oleh M. Natsir tidak sepenuhnya dalam bentuk pendidikan formal, bahkan dilaksanakan melalui nonformal. Sementara elemen dari proses, M. Natsir langsung memberikan tugas kepada kadernya. Jika tugas yang telah ia berikan dapat terlaksana dengan baik, maka ia akan memberikan tugas tambahan semacam itu, dan seterusnya agar para kader tersebut matang dalam melaksanakan dan melakukan tugasnya.
Electric Current Neutralization in Solar Active Regions and Its Relation to Eruptive Activity
Authors: Avallone Ellis A. , Sun 孙 Xudong 旭东
Published: April 2020

It is well established that magnetic free energy associated with electric currents powers solar flares and coronal mass ejections (CMEs) from solar active regions (ARs). However, the conditions that determine whether an AR will produce an eruption are not well understood. Previous work suggests that the degree to which the driving electric currents, or the sum of all currents within a single magnetic polarity, are neutralized may serve as a good proxy for assessing the ability of ARs to produce eruptions. Here, we investigate the relationship between current neutralization and flare/CME production using a sample of 15 flare-active and 15 flare-quiet ARs. All flare-quiet and four flare-active ARs are also CME-quiet. We additionally test the relation of current neutralization to the degree of shear along polarity inversion lines (PILs) in an AR. We find that flare-productive ARs are more likely to exhibit non-neutralized currents, specifically those that also produce a CME. We find that flare/CME-active ARs also exhibit higher degrees of PIL shear than flare/CME-quiet ARs. We additionally observe that currents become more neutralized during magnetic flux emergence in flare-quiet ARs. Our investigation suggests that current neutralization in ARs is indicative of their eruptive potential.
A Mysterious Ring in Dark Space?
Authors: Zhang Wei , Yang Fan , Wu Hong , Wu Chaojian , Zou Hu , Zhang Tianmeng , Zhou Xu , Lei Fengjie , Jin Junjie , Zhou Zhimin , Nie Jundan , Ma Jun , Wang Jiali
Published: April 2020

We report the discovery of a low-surface-brightness (27.42 mag arcsec−2 in g band) nebula, which has a ring-like shape in the Beijing–Arizona Sky Survey (BASS). Positive detections have been found in multiband data from far-ultraviolet to far-infrared, except the z band from BASS and W1, W2 from the Wide-field Infrared Survey Explorer. The reddening of the nebula E(B − V) ∼ 0.02 mag is estimated from Infrared Astronomical Satellite (IRAS) 100 μm intensity and H i column density. With the help of the 3D reddening map from Pan-STARRS 1, the Two Micron All Sky Survey, and Gaia, the distance to the nebula of about 500 pc from Earth is derived. Such a low-surface-brightness nebula whose energy can be interpreted by the diffuse Galactic light could account for the optical counterpart of the infrared cirrus, which was detected by IRAS more than 30 yr ago. The ring-like structure might be the ultimate phase of an evolved planetary nebula, while the central white dwarf star has been ejected from the nebula for an unclear reason. On the other hand, the ring structure being a superposition of two close filaments might be another reasonable explanation. Considering the lack of spectroscopic data and uncertainty in the distance measurement, these interpretations need to be checked by future observations.
An Examination of Galactic Polarization with Application to the Planck TB Correlation
Authors: Weiland J. L. , Addison G. E. , Bennett C. L. , Halpern M. , Hinshaw G.
Published: April 2020

Angular power spectra computed from Planck HFI 353 GHz intensity and polarization maps produce a TB correlation that can be approximated by a power law. Whether the observed TB correlation is an induced systematic feature or a physical property of Galactic dust emission is of interest both for cosmological and Galactic studies. We investigate the large angular scale E- and B-mode morphology of microwave polarized thermal dust emission, and relate it to physical quantities of polarization angle and polarization fraction. We use empirical models of polarized dust to show that dust polarization angle is a key factor in producing the TB correlation. A small sample of both simulated and observed polarization angle maps are combined with 353 GHz intensity and dust polarization fraction to produce a suite of maps from which we compute TB and EB. Model realizations that produce a positive TB correlation are common and can result from large-scale (>5°) structure in the polarization angle. The TB correlation appears robust to introduction of individual intensity, polarization angle, and polarization fraction model components that are independent of the 353 GHz observations. We conclude that the observed TB correlation is likely the result of large-scale Galactic dust polarization properties.
Star Formation Enhancement in Barred Disk Galaxies in Interacting Galaxy Clusters
Authors: Yoon Yongmin , Im Myungshin
Published: April 2020

A recent study shows that bars can be induced via interaction of galaxy clusters, but it has been unclear if the bar formation by the interaction between clusters is related to the enhancement of star formation. We study galaxies in 105 galaxy clusters at 0.015 < z < 0.060 detected from Sloan Digital Sky Survey data, in order to examine whether the fraction of star-forming galaxies (f
sf) in 16 interacting clusters is enhanced compared with that of the other non-interacting clusters and to investigate the possible connection between the f
sf enhancement and the bar formation in interacting clusters. We find that f
sf is moderately higher (∼20%) in interacting clusters than in non-interacting clusters and that the enhancement of star formation in interacting clusters occurs only in moderate-mass disk-dominated galaxies (

and the bulge-to-total light ratio is ≤0.5). We also find that the enhancement of f
sf in moderate-mass disk-dominated galaxies in interacting clusters is mostly due to the increase of the number of barred galaxies. Our result suggests that the cluster–cluster interaction can simultaneously induce bars and star formation in disk galaxies.
3D Radiative MHD Simulations of Starspots
Authors: Panja Mayukh , Cameron Robert , Solanki Sami K.
Published: April 2020

There are no direct spatially resolved observations of spots on stars other than the Sun, and starspot properties are inferred indirectly through lightcurves and spectropolarimetric data. We present the first self-consistent 3D radiative MHD computations of starspots on G2V, K0V, and M0V stars, which will help us to better understand observations of activity, variability, and magnetic fields in late-type main-sequence stars. We used the MURaM code, which has been extensively used to compute “realistic” sunspots, for our simulations. We aim to study how fundamental starspot properties such as intensity contrast, temperature, and magnetic field strength vary with spectral type. We first simulated in 2D multiple spots of each spectral type to find out appropriate initial conditions for our 3D runs. We find that with increasing stellar effective temperature, there is an increase in the temperature difference between the umbra of the spot and its surrounding photosphere, from 350 K on the M0V star to 1400 K on the G2V star. This trend in our simulated starspots is consistent with observations. The magnetic field strengths of all the starspot umbrae are in the 3–4.5 kG range. The G2V and K0V umbrae have comparable magnetic field strengths around 3.5 kG, while the M0V umbra has a relatively higher field strength around 4 kG. We discuss the physical reasons behind both these trends. All of the three starspots develop penumbral filament-like structures with Evershed flows. The average Evershed flow speed drops from 1.32 km s−1 in the G2V penumbra to 0.6 km s−1 in the M0V penumbra.
Distinguishing Binary Neutron Star from Neutron Star–Black Hole Mergers with Gravitational Waves
Authors: Chen Hsin-Yu , Chatziioannou Katerina
Published: April 2020

The gravitational-wave signal from the merger of two neutron stars cannot be easily differentiated from the signal produced by a comparable-mass mixed binary of a neutron star and a black hole. Indeed, both binary types can account for the gravitational-wave signal GW170817 even if its electromagnetic counterpart emission is taken into account. We propose a method that requires neither information from the post-inspiral phase of the binary nor an electromagnetic counterpart to identify mixed binaries of neutron stars merging with low-mass black holes using gravitational waves alone. This method is based on the fact that certain neutron star properties that can be measured with gravitational waves are common or similar for all neutron stars. For example all neutron stars share the same equation of state, and if the latter is hadronic, neutron stars have similar radii. If a mixed binary is misidentified as a neutron star binary, the inferred neutron star properties will be misestimated and appear as outliers in a population of low-mass binaries. We show that as few as ∼5 low-mass events will allow for the identification of the type of one event at the 80% confidence level. We model the population of low-mass binaries with a hierarchical mixture model and show that we can constrain the existence of mixed binaries or measure their abundance relative to neutron star binaries to ∼0.1 at the 68% credible level with 100 events.
FRB Periodicity: Mild Pulsars in Tight O/B-star Binaries
Authors: Lyutikov Maxim , Barkov Maxim V. , Giannios Dimitrios
Published: April 2020

Periodicities observed in two fast radio burst (FRB) sources (16 days in FRB 180916.J0158+65 and 160 days in FRB 121102) are consistent with that of tight, stellar-mass binary systems. In the case of FRB 180916.J0158+65 the primary is an early OB-type star with the mass-loss rate

yr−1, and the secondary is a neutron star. The observed periodicity is not intrinsic to the FRB’s source, but is due to the orbital phase-dependent modulation of the absorption conditions in the massive star’s wind. The observed relatively narrow FRB activity window implies that the primary’s wind dynamically dominates that of the pulsar,

, where L
sd is the pulsar spin-down,

is the primary’s wind mass-loss rate, and v

w
is its velocity. The condition η ≤ 1 requires a mildly powerful pulsar with L
sd ≲ 1037 erg s−1. The observations are consistent with magnetically powered radio emission originating in the magnetospheres of young, strongly magnetized neutron stars, the classical magnetars.
Physical Properties of 299 NEOs Manually Recovered in Over Five Years of NEOWISE Survey Data
Authors: Masiero Joseph R. , Smith Patrice , Teodoro Lean D. , Mainzer A. K. , Cutri R. M. , Grav T. , Wright E. L.
Published: April 2020

Thermal infrared measurements of near-Earth objects (NEOs) provide critical data for constraining their physical properties such as size. The Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has been conducting an all-sky infrared survey to gather such data and to improve our understanding of this population. While automated routines are employed to identify the majority of moving objects detected by NEOWISE, a subset of objects will have dynamical properties that fall outside the window detectable to these routines. Using the population of known NEOs, we have conducted a manual search for detections of these objects that were previously unreported. We report 303 new epochs of observations for 299 unique NEOs of which 239 have no previous physical property characterization from the NEOWISE Reactivation mission. As these objects are drawn from a list with inherent optical selection biases, the distribution of measured albedos is skewed to higher values than is seen for the diameter-selected population detected by the automated routines. These results demonstrate the importance and benefit of periodic searches of the archival NEOWISE data.
The economic consequences of the coronavirus pandemic: which groups will suffer more in terms of loss of employment and income?
Authors: Kartseva Marina A. , Kuznetsova Polina O.
Published: April 2020

The paper estimates the scale of the possible impact of the coronavirus epidemic on the Russian labor market and household incomes. We consider vulnerable employment, which includes workers with increased risks of job loss, wage cuts and other negative events that reduce labor incomes.

The analysis shows that every second Russian worker can be classified as vulnerable employee. The highest risks for reducing labor incomes as a result of the epidemic are faced by young people, workers with a low level of education, as well as residents of regional centers. About a third of vulnerable employees experience complex vulnerability, i.e. meet several criteria of vulnerability.

A decrease in labor incomes could also affect the wealth of about 40% of Russian households. The worst situation is for younger families, whose incomes are much more dependent on the labor market. Most of the households in which vulnerable workers live do not receive social benefits, and therefore it would be rather difficult for them to count on prompt assistance from the social protection system.

Currently Russia is actively developing a set of measures to support employment. In particular, government decided to provide support for the most affected by COVID sectors, the size of unemployment benefits has been increased for citizens who have lost their jobs due to the epidemic. However, it is obvious that this list should be extended and account for various forms of deterioration of employment.
The economy under the pandemic and afterwards
Authors: Auzan Alexander A.
Published: April 2020

The article deals with the peculiarities of the current global economic crisis and discusses whether the crisis can give an impetus to a new development model. The author emphasizes that as the crisis is caused by external shock (the pandemic), it is very different from other types of economic crises and can be followed by serious civilizational consequences. The pandemic is the price for globalization. During the crisis, governments face an unsolvable dilemma: saving lives or preserving the economy (that is, future lives), with a significant credit of trust of the population. In such a period, a society has a chance to improve the path of its development (get out of the path dependence). In particular, the author discusses institutional changes needed in contemporary Russia to make this happen, namely the tax system revision and the law enforcement agencies reform.
Two Unusual Cases of Coronal Lunate Fracture
Authors: Hofmeister Eric P. , Faruqui Safi
Published: April 2020

Volar lunate fractures are rare injuries, usually seen as a result of high-energy trauma and often in association of other carpal injuries. We present 2 unusual cases of coronal volar lunate fractures. The first case involved a proximal pole scaphoid fracture in association with a volar lunate fracture. During surgical exposure, the lunate fracture was found to be rotated 180° volarly. This displaced lunate fracture, although appearing small on radiographs, consisted of the entire volar half of the capitate facet of the distal lunate. Both the scaphoid and lunate fractures were anatomically reduced with fixation across the fractures.

The second case was the result of a high-energy injury and included a transscaphoid, transtriquetral, translunate facture dislocation with a comminuted radial styloid fracture and a small ulnar styloid fracture. Operative reduction and internal fixation was performed of the scaphoid and lunate. The triquetral and comminuted radial styloid fractures were stabilized with K-wires. In both cases, following splinting and rehabilitation, an excellent functional outcome was obtained.

Early recognition and operative treatment of these unusual lunate fractures in association with treatment of the concomitant injuries using an extended volar approach with open reduction internal fixation can lead to an excellent anatomic and functional outcome in these types of cases.
Epidural Granuloma Arising From Epidural Catheter Placement
Authors: Mercaitis Orion P. , Dropkin Benjamin M. , Kaufman Erin L. , Carl Allen L.
Published: April 2020

Indwelling epidural catheter placement for prolonged drug delivery or is commonplace. Epidural catheter placement leading to a subsequent epidural mass is infrequently symptomatic and thus not often sought after or uncovered. Such masses can mimic lesions causing tumor, infection, and inflammation, and when found, the etiology of granuloma formation is unclear.

This article describes a case of a benign epidural granuloma masquerading as an epidural tumor thought to be caused by epidural catheter placement for postoperative total hip replacement pain control. After symptoms of mechanical and radiculopathic pain arose, the patient underwent an open biopsy, spinal decompression, and intradural exploration as an MRI evaluation identified a mass in the spinal canal. Pathologic examination identified a benign fibrous granuloma. At 36-month follow-up, there was no evidence of symptom or tumor recurrence.
Chondromyxoid Fibroma Involving the Metacarpophalangeal Joint
Authors: Slotcavage Rachel L. , Dickson Brendan C. , Ogilvie Christian M.
Published: April 2020

Chondromyxoid fibroma is a rare benign bony tumor classically occurring in the metaphyseal region of the long bones surrounding the knee, but also found with relative frequency in other long bones, the pelvis, ribs, and small foot bones. The small bones of the hand, however, are rarely involved. The tumor is considered a physeal plate remnant and may involve the epiphysis, diaphysis, or both along with its metaphyseal origin. It may cause cortical expansion and destruction, but consistently respects the periosteal boundary.

We report a case of histopathologically confirmed chondromyxoid fibroma involving a metacarpal, proximal phalanx, and synovial tissues of the metacarpophalangeal joint. A 29-year-old woman presented with pain, weakness, and a mass of the right ring finger metacarpophalangeal joint that had persisted since prior surgery to remove an extraosseous chondroma. Prominent soft tissue swelling and limited range of motion were noted, corresponding to magnetic resonance imaging findings of lytic changes in the right ring finger metacarpal and proximal phalanx, surrounded by an irregularly enhancing mass with soft tissue extension. Open biopsy revealed calcified cartilaginous synovial deposits suspicious for synovial chondromatosis, with erosion into surrounding bones. Histologic examination revealed an unusual chondromyxoid fibroma with joint involvement. The patient is >15 months out from synovectomy, intralesional curettage, and placement of demineralized bone matrix and allograft cancellous chips, and is without signs of recurrence. This benign, curable lesion should be included in the differential diagnosis of a bony lesion, even when a joint and adjacent bones are involved.
Unicompartmental Knee Arthroplasty Compares Favorably to Total Knee Arthroplasty in the Same Patient
Authors: Dalury David F. , Fisher David A. , Adams Mary Jo , Gonzales Ricardo A.
Published: April 2020

There are several surgical management options for medial knee arthritis, and it is often difficult to decide whether a unicompartmental knee arthroplasty (UKA) or total knee arthroplasty (TKA) is appropriate. Few studies have compared UKAs and TKAs in the same patient. We identified 23 patients with osteoarthritis who had a TKA on one side and a UKA on the other. The preoperative values of the 2 knees were not statistically different. Strict criteria were used to determine whether a UKA could be performed (functional anterior cruciate ligament, minimal deformity, and minimum changes in other compartments). Preoperative radiographs were reviewed to confirm that the knee undergoing TKA had medial compartment disease only. Knee Society scores, radiographic analysis, and patient preferences were recorded for all patients. Average follow-up was 46 months (range, 7.2–148 months) and 42 months (range, 11.5–59.8 months) for TKA and UKA, respectively.

We found little or no difference in outcomes between the 2 procedures, except for an improved range of motion with the UKA compared with the TKA (123°±9° vs 119.8°±7°, respectively). Knee Society scores improved from 45.9 to 89.7 in UKA and from 42.4 to 90.3 in TKA. Of the 23 patients, 11 expressed no preference between either knee and 12 preferred the unicompartmental knee; no patient preferred the total knee. With appropriate patient selection, UKAs are a successful option for patients with osteoarthritis.
A Fast Online Monitoring Approach for Surgical Risks
Authors: Liu Jiaqi ,   School of Computer Science and Technology, Xi'an Jiaotong University, Xi'an, China, Lai Xin , Wang Jiayin , Lai Paul B.S. , Zhang Xuanping , Zhu Xiaoyan ,   Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China
Published: April 2020

Risk monitoring has been widely used in health care, further, control charts are often used as monitoring methods for surgical outcomes. Most of the methods can only detect step shifts of position parameters, but cannot take measures on scale parameters. In this paper, we proposed four methods based on EWMA control charts, namely SESOP, STSSO, SESOP-MFIR and STSSO-MFIR, to improve the existing monitoring methods. Specifically, SESOP standardizes variable on the basis of an EWMA charting method; STSSO replaces the statistics of the original EWMA charting method with the score test statistics; for SESOP-MFIR and STSSO-MFIR, we upgrade their control limits from asymptotic to time-varying based on SESOP and STSSO, which enhance the timeliness of the earlier shifts monitoring. In order to verify the improvement of surgical outcomes monitoring, we respectively carry out simulation experiment and a practical application on ESOP and our four methods. SESOP can raise the overall efficiency of detecting shifts; STSSO led to a significant increase in the monitoring stability, especially for small volatilities; the optimization brought by SESOP-MFIR and STSSO-MFIR are more obvious, that the speed of detecting earlier shifts can even be reduced to half of the existing methods. Then, we apply these methods to the SOMIP program of Hong Kong, SESOP-MFIR and STSSO-MFIR have the best performance and can detect early shifts in time. According to the results, the methods we proposed can monitor both early shifts and scale parameters and improve the performance of surgical outcome monitoring in different degrees compared to those existing methods.
Osmolyte accumulation and antioxidant metabolism during germination of vigorous maize seeds subjected to water deficit
Authors: Prazeres Camila Segalla , Coelho Cileide Maria Medeiros
Published: April 2020

The objective of this work was to evaluate the alterations of antioxidant enzyme reserves and antioxidant enzymes during germination under water deficit in maize hybrids and to associate with seed vigor, determining the mechanisms related to tolerance for this stress. Two three-way maize hybrids were characterized by their vigor at different levels of water deficit induced by polyethylene glycol 6000. Next, the seeds were hydrated at different osmotic potentials (0.0, -0.3, and -0.9 MPa) and removed at different times to assess the levels of the total soluble protein, total soluble sugars, proline, starch, and antioxidant enzymes, such as superoxide dismutase, catalase and ascorbate peroxidase. The analysis of variance, Tukey test at 5% and principal component analysis (PCA) were used. The vigorous hybrid (HT1) was more efficient than the low vigor hybrid seeds (HT2) in mobilizing the total soluble protein during the initial stages of germination and the total soluble sugars before and after root protrusion under water deficit in addition to increasing the catalase activity at the different osmotic potentials that were assessed.
Pretreatment of forage legumes under moderate salinity with exogenous salicylic acid or spermidine
Authors: Pizolato Neto Antonio , Alves Rita de Cássia , Camargos Ayza Eugênio Viana , Gratão Priscila Lupino , Carregari Sônia Maria Raymundo , Zingaretti Sonia Marli , Santos Durvalina Maria Mathias Dos
Published: April 2020

The present study aims to determine whether exogenous salicylic acid (SA) or spermidine (Spd) has any protective effect against salt stress. Seeds were subjected to 0, 20, 40, and 60 mM NaCl with or without salicylic acid or spermidine (0.5 mM) for 10 days. The evaluated variables were germination rate, shoot and root dry masses, glycine betaine content, lipid peroxidation, and the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX). The data were subjected to Tukey’s test (p ≤ 0.05). There was a growth increase, especially in plant shoots. The reduction in lipid peroxidation, as indicated by lower malondialdehyde (MDA) levels, can be explained by an increase in antioxidant activity when SA and Spd were added. When compared to CAT and APX, SOD was the least responsive enzyme to the addition of both SA and Spd in salt-stressed plants. SA and Spd partially reduced the effects of moderate salt stress in both plant species; however, Spd addition had better results than SA in terms of suppressing oxidative stress. Lablab plants were more vigorous than pigeonpea plants.
Sunflower performance as a function of phosphate fertilization in semiarid conditions
Authors: Soares Enielson Bezerra , Barros Júnior Aurélio Paes , Albuquerque José Ricardo Tavares de , Santos Manoel Galdino dos , Lins Hamurábi Anizio , Bezerra Neto Francisco
Published: April 2020

The objective of this work was to evaluate the response of sunflower cultivars submitted to increasing levels of phosphate fertilization in two crops. The experimental design was a randomized complete block design with four replicates in subdivided plots, where five doses of simple superphosphate (0, 50, 100, 150, and 200 kg ha-1 P2O5) were allocated to the plots and three sunflower cultivars (Aguará 06, Altis 99, and Embrapa 122-V2000) were assigned to the subplots. The variables evaluated were the P content in the diagnostic leaf, number of achenes per capitulum, achene yield (kg ha-1), oil content (%) and oil yield. The phosphorus doses increased the components of production. The dose that provided the best sunflower performance varied for the different cultivars. Among the doses studied, fertilization with 100 kg ha-1 P2O5 in the 2016 agricultural crop and 150 kg ha-1 P2O5 in the 2017 agricultural crop provided the best conditions for sunflower cultivation. The cultivar Aguará 06 produced more achenes and oil than the other cultivars analyzed in the agricultural crops.
Açaí meal on diet digestibility for commercial laying hens
Authors: Rufino João Paulo Ferreira , Cruz Frank George Guimarães , Dias Fábio Jacobs , Brasil Ronner Joaquim Mendonça , Silva Ana Rebeca Pires da , Melo Paloma Leandra Garcia
Published: April 2020

This study aimed to evaluate açaí meal in diets for commercial laying hens on apparent nutrient digestibility and apparent metabolizable energy. A total of 72 Hissex White laying hens (52-wks-old) were distributed in a completely randomized design, where treatments consisted of a control diet and an experimental diet (25% açaí meal) with six replicates of six birds each. Data collected were subjected to polynomial regression at 5%. Differences (p < 0.05) were detected in digestibility of all evaluated nutrients. Hens fed diets with 25% açaí meal presented worse (p < 0.05) metabolization and use of energy content. It can be concluded that hens fed diets containing açaí meal presented better use of crude protein, non-fiber carbohydrates and mineral matter. However, there was worse use of dry matter, fiber carbohydrates and ether extract. This result directly affected the energy metabolism of the birds. The inclusion of açaí meal reduced the energy use.
Colorimetric method as alternative to chromium (III) quantification in cattle feces
Authors: Torres Ospina Alexandra , Zapata Julian Andrés , Gil Gonzalez Jesus Humberto , Giraldo Luis , Valencia Diana Marcela
Published: April 2020

One of the main factors to establish productivity of grazing cattle is the estimation of forage intake. For this, the most widely used technique is based on the estimation of fecal output using chromium dioxide as external marker. However, quantification can be expensive and sometimes not precise due to the methodology used for this purpose. Therefore, the aim of this study was to validate the colorimetric method for chromium quantification and to implement it in the estimation of fecal output in grazing cattle. The temperature, the digestion time and the wavelength for the measurement were evaluated. The method was validated for selectivity, linearity, detection and quantification limits, precision, accuracy, and stability. Results showed that temperature and digestion time are critical to improve sensitivity and quantification limits. The validation demonstrated that the method is suitable for the quantification of Cr2O3 in a wide range of concentrations, being statistically comparable with a reference method, and offering a reliable low cost and easy to implement alternative, to estimate fecal output in bovine digestibility studies.