bluuebunny/crossref_metadata_2025_split huggingface dataset:
Constrained Reference Star Differential Imaging: Enabling High-fidelity Imagery of Highly Structured Circumstellar Disks
*
Authors: Lawson Kellen , Currie Thayne , Wisniewski John P. , Groff Tyler D. , McElwain Michael W. , Schlieder Joshua E. 
Published: August 2022

Abstract
High-contrast imaging presents us with the opportunity to study circumstellar disks and the planets still embedded within them, providing key insights into the formation and evolution of planetary systems. However, the postprocessing techniques that are often needed to suppress stellar halo light typically result in significant and variable loss of circumstellar light, even when using relatively conservative approaches like reference star differential imaging (RDI). We introduce “constrained reference star differential imaging” (constrained RDI), a new class of RDI point-spread-function (PSF) subtraction techniques for systems with circumstellar disks. Constrained RDI utilizes either high-resolution polarized-intensity (PI) images or disk models to severely limit or even eliminate the signal loss due to oversubtraction that is common to RDI. We demonstrate the ability of constrained RDI utilizing polarimetric data to yield an oversubtraction-free detection of the AB Aurigae protoplanetary disk in total intensity. PI-constrained RDI allows us to decisively recover the spectral signature of the confirmed, recently discovered protoplanet, AB Aurigae b. We further demonstrate that constrained RDI can be a powerful analysis tool for soon-to-be-acquired James Webb Space Telescope coronagraphic imaging of disks. In both cases, constrained RDI provides analysis-ready products that enable more detailed studies of disks and more robust verification of embedded exoplanets.
Avoiding a Cluster Catastrophe: Retention Efficiency and the Binary Black Hole Mass Spectrum
Authors: Zevin Michael , Holz Daniel E. 
Published: August 2022

Abstract
The population of binary black hole mergers identified through gravitational waves has uncovered unexpected features in the intrinsic properties of black holes in the universe. One particularly surprising and exciting result is the possible existence of black holes in the pair-instability mass gap, ∼50–120 M
⊙. Dense stellar environments can populate this region of mass space through hierarchical mergers, with the retention efficiency of black hole merger products strongly dependent on the escape velocity of the host environment. We use simple toy models to represent hierarchical merger scenarios in various dynamical environments. We find that hierarchical mergers in environments with high escape velocities (≳300 km s−1) are efficiently retained. If such environments dominate the binary black hole merger rate, this would lead to an abundance of high-mass mergers that is potentially incompatible with the empirical mass spectrum from the current catalog of binary black hole mergers. Models that efficiently generate hierarchical mergers, and contribute significantly to the observed population, must therefore be tuned to avoid a “cluster catastrophe” of overproducing binary black hole mergers within and above the pair-instability mass gap.
Galactic Winds and Bubbles from Nuclear Starburst Rings
Authors: Nguyen Dustin D. , Thompson Todd A. 
Published: August 2022

Abstract
Galactic outflows from local starburst galaxies typically exhibit a layered geometry, with cool 104 K flow sheathing a hotter 107 K, cylindrically collimated, X-ray-emitting plasma. Here we argue that winds driven by energy injection in a ring-like geometry can produce this distinctive large-scale multiphase morphology. The ring configuration is motivated by the observation that massive young star clusters are often distributed in a ring at the host galaxy’s inner Lindblad resonance, where larger-scale spiral arm structure terminates. We present parameterized three-dimensional radiative hydrodynamical simulations that follow the emergence and dynamics of energy-driven hot winds from starburst rings. In this letter, we show that the flow shocks on itself within the inner ring hole, maintaining high 107 K temperatures, while flows that emerge from the wind-driving ring unobstructed can undergo rapid bulk cooling down to 104 K, producing a fast hot biconical outflow enclosed by a sheath of cooler nearly comoving material without ram pressure acceleration. The hot flow is collimated along the ring axis, even in the absence of pressure confinement from a galactic disk or magnetic fields. In the early stages of expansion, the emerging wind forms a bubble-like shape reminiscent of the Milky Way’s eROSITA and Fermi bubbles and can reach velocities usually associated with active-galactic-nucleus-driven winds. We discuss the physics of the ring configuration, the conditions for radiative bulk cooling, and the implications for future X-ray observations.
Typhon: A Polar Stream from the Outer Halo Raining through the Solar Neighborhood
Authors: Tenachi Wassim , Oria Pierre-Antoine , Ibata Rodrigo , Famaey Benoit , Yuan Zhen , Arentsen Anke , Martin Nicolas , Viswanathan Akshara 
Published: August 2022

Abstract
We report on the discovery in the Gaia DR3 astrometric and spectroscopic catalog of a new polar stream that is found as an overdensity in action space. This structure is unique as it has an extremely large apocenter distance, reaching beyond 100 kpc, and yet is detected as a coherent moving structure in the solar neighborhood with a width of ∼4 kpc. A subsample of these stars that was fortuitously observed by LAMOST has a mean spectroscopic metallicity of

〈
[
Fe

/

H
]
〉
=
−

1.60

−
0.16

+
0.15

dex and possesses a resolved metallicity dispersion of

σ
(
[
Fe

/

H
]
)
=

0.32

−
0.06

+
0.17

dex. The physical width of the stream, the metallicity dispersion, and the vertical action spread indicate that the progenitor was a dwarf galaxy. The existence of such a coherent and highly radial structure at their pericenters in the vicinity of the Sun suggests that many other dwarf galaxy fragments may be lurking in the outer halo.
The Geologic Impact of 16 Psyche’s Surface Temperatures
Authors: Bierson Carver J. , Elkins-Tanton Linda T. , O’Rourke Joseph G. 
Published: August 2022

Abstract
NASA’s Discovery mission Psyche will soon be launched to visit the asteroid 16 Psyche. In this work, we model the surface temperatures of 16 Psyche. Our modeling is focused on capturing the diurnal and seasonal surface temperature variations caused by 16 Psyche’s large obliquity (95°) and moderately high eccentricity (0.134). Using a semianalytic framework, we predict that large thermal variations (including at the poles) can cause cracking of boulders leading to a porous surface regolith. This prediction is consistent with a high-porosity surface regolith inferred from thermal inertia measurements. We also find that water ice is not likely to be stable at any latitude.
Risk factors leading to preterm deliveries among the mothers in Jaffna District, Sri Lanka
Authors: Sathees S. , Sathiadas M. G. , Surenthirakumaran R. , Arasaratnam V. 
Published: August 2022

Health status of pregnant woman is associated with the risk of preterm delivery. An institutional-based descriptive study was conducted among 173 mothers who delivered preterm babies at the Teaching Hospital, Jaffna, Sri Lanka. Median gestational age of the preterm babies was 35.0 (±1.9) weeks. The mean birth weight of the preterm babies was 2.2 (±0.6) kg, and 54.3% of preterm babies were males. Nearly half of the mothers (54.9%) did not have complications during pregnancy, while pre-rupture of membrane (25.4%) and hypertension (13.3%) were in higher prevalence among those who had the complications. The risk factors of very preterm deliveries observed were the mothers who were primies (OR: 3.021), the mothers who maintained interpregnancy interval of <1 year (OR:1.117), had sexual intercourse before two weeks of delivery (OR:1.607) and were diagnosed with pregnancy complications (OR:1.695). The prevalence of very preterm birth is low. However, based on the risk factors linked to very preterm identified by this study, implementation of interventions focusing on improving the profile of the pregnant mothers may serve as a protective factor for reducing very preterm birth.
Extensive Rhino-Orbital-Cerebral mucormycosis in kidney transplant recipient associated with COVID-19 infection: A Case Report
Authors: Perera Charith , Senanayake S. 
Published: August 2022

Rhino-orbital-cerebral mucormycosis is an invasive disease caused by fungi. Diabetes mellitus and solid organ transplantation are known risk factors, while it is increasingly recognized in patients with COVID-19 although the exact causal relationship is unknown. Early diagnosis and treatment with liposomal amphotericin B with surgical debridement carries a better outcome in these patients. We present a case of extensive rhino-orbital-cerebral mucormycosis involving the paranasal sinuses, left orbit, cavernous sinus, middle cranial fossa with abscess formation in the left middle cerebellar peduncle in a 46-year-old kidney transplant recipient with concomitant COVID-19 infection.
Choosing an appropriate size valve for transcatheter pulmonary valve implantation in a native right ventricle outflow tract
Authors: Sivaprakasam Muthukumaran C. , Reddy J. Raja Vijendra , Ganesan Rajaguru , Sridhar Anuradha , Solomon Neville , Moosa Musth Janeel , Lakhani Zeeshan Sakina , Gunasekaran Sengottuvelu 
Published: August 2022

Introduction:
Transcatheter pulmonary valve implantation has been an effective treatment for dysfuntional right ventricular tract outflow tract (RVOT). Defining a landing zone before the intervention is crucial in patients with native RVOT. Improper sizing and undefined landing zone will lead to embolization.

Methods:
It is a retrospective observational study from August 2020 to December 2020 in native RVOT. Three patients who had significant Right ventricle dilatation were analyzed. The multi-slice computed tomography (MSCT) with magnetic resonance imaging and angiography data of all patients before the procedure were analyzed. All patients underwent an angiogram in the same sitting, before the procedure to assess the landing zone, valve diameter as well as the risk for coronary compression. We chose a valve based on valve area 23%–25% more than the area at the waist during balloon sizing.

Results:
All three patients underwent successful valve implantation. Valve sizes used were 27.5 mm in one and 32 mm in the other two. The mean RVOT gradient postprocedure was 11.5 mm Hg and pre procedure was 43 mmHg. There were no complications during the procedure or at a mean follow-up of 3.6 months.

Conclusion:
The balloon sizing gives the true narrowest diameter in comparison with MSCT, and increasing this area by 23%–25% will give the appropriate valve size for successful implantation.
The Effect of Consuming Chicory Juice by Breastfeeding Mothers on Neonatal Icterus
Authors: Esfarjani Shahla Vaziri , Zinatian Shadi , Salimi Mahin 
Published: August 2022

Objective:
Hyperbilirubinemia has been considered one of the most common clinical conditions in newborn babies. As a traditional medicine, chicory distillate may be beneficial in reducing bilirubin. This randomized, double-blind clinical trial was conducted to determine the effect of chicory extract on hyperbilirubinemia in neonates.

Methods:
The clinical trial was conducted among 154 participants with hyperbilirubinemia. The study group was selected and randomly divided into the control (n = 77) and intervention (n = 77) groups. In the intervention group, breastfeeding women received a 10% solution of chicory distillate (50 ml every 12 h), whereas, in the control group, the participants received sterile distilled water, 50 ml every 12 h. The infants’ bilirubin level was measured before and 24, 48, and 72 h after the intervention. Fisher's exact and Chi-square tests were run to examine qualitative data, while a t-test was applied for independent variables.

Findings:
There was a significant difference between the intervention and control groups (P < 0.001). Within each group, a significant difference was found in bilirubin levels among different sampling times (P < 0.001). Although the bilirubin levels reduced during the time intervals in both groups, the reduction rate was significantly higher in the intervention group (P < 0.001). Based on the results, breastfeeding mothers should be aware of including chicory extract in their nutritional programs.

Conclusion:
Chicory extract consumption in breastfeeding mothers can reduce bilirubin in their neonate
Tin Concentrations and Human Health Risk Assessment for Children and Adults in Seafood and Canned Fish commonly consumed in Bayelsa State, Nigeria
Authors: Markmanuel D. P. , Amos-Tautau B. M. W. , Songca S. P. 
Published: August 2022

Tin is a naturally occurring element in the environment, and the most important dietary intake is from tin-plates steel cans used for food packaging. The objective of this paper is to evaluate the tin concentrations and human health risk assessment of children and adults in seafood and canned fish (Sardine and Mackerel) obtained from Bayelsa State, Nigeria using the Thermo-Elemental Atomic Absorption Spectrometer (S4-71096 model) after mixed-acid digestion. Data obtained reveal tin concentrations (mean ± SD, mg/kg) in seafood in the order of fresh water fish (0.99 ± 0.07) salt water fish (0.98 ± 0.16) salt water–Blood Clam (0.75 0.022) fresh water- Clam (0.17 ± 0.12) fresh water-Prawn (0.06 ± 0.01) salt water shrimp (0.02 ± 0.01) respectively, tin concentrations in the brands of canned fish were significantly higher than the concentration in seafood (p < 0.05). However, the mean concentrations of tin in the seafood and brands of canned fish were lower than the standard guideline limits set by regulatory bodies (200 mg/kg - 250 mg/kg). The health risk exposure assessment revealed that the values of all the samples were lower than the provisional maximum tolerable daily intake (PMTDI) of tin. The target hazard quotient (THQ) values of tin for both children and adults in all the samples were also lower than the reference dose (RfD). The health risk index (HRI) values of the seafood and the brands of canned fish for both children and adults were less than 1.0, which indicates that there are no adverse effects at the moment. However, the HRI values of the brands of canned fish were higher than the seafood for children and adults. Hence, assessment of tin in seafood and canned food could be periodically assessed by Nigerian food and drug regulatory organizations for efficient policy regulations.
USO DA OZONIOTERAPIA E MEDICINA AYURVEDA COMO PRÁTICAS COMPLEMENTARES NO TRATAMENTO DE INFECÇÃO POR Sars-CoV-2
Authors: Almeida-Junior Silvio de , Nicobue Victor Rodrigues , Dos Santos Júlio César 
Published: August 2022

O quadro pandêmico vivenciado no mundo pela infecção por Sars-CoV-2 ora denominado COVID-19 apresenta uma progressão rápida, com caracterização de infecção grave em região pulmonar alterando toda homeostase do organismo, afetando sistema circulatório, respiratório, coagulação entre outros. Dessa forma, a presente revisão integrativa avaliou artigos publicados em 2020 e 2021 em 5 bases de dados diferentes para aplicação da medicina Ayurveda e tratamento com ozonioterapia na intenção de estabilidade clínica e laboratorial de pacientes acometidos pela infecção por COVID-19. Foram identificados 2.065 artigos sobre o assunto, buscados na PubMed, Periódico CAPES, ResearchGate, Jstor e BVS e selecionados 11 para discussão nesta revisão integrativa. A administração de plantas da medicina Ayurveda demonstrou atividade positiva frente a internação por Covid-19, como Dasamoolkaduthrayadi Kashaya associado a Guluchyadi Kwatham, Sudarshan Churna, Talisadi Churna, Dhanwantara Gutika, Saddharanacurna, Suksmatriphala, Shunthi, Vidanga, Yashtimadhu, Haritaki entre outras. Já a ozonioterapia apresentou resultados positivos em recuperação de pacientes quanto ao quadro laboratorial, clínico e bem-estar, com tratamento de administração retal, solução fisiológica enriquecida com ozônio e auto-hemoterapia que demonstrou a maior efetividade dos tratamentos, além da segurança clínica apresentada. Frente a isso, é possível afirmar que o uso de práticas complementares como plantas da medicina Ayurveda e tratamento com ozonioterapia são benéficos na melhora clínica de pacientes internados com COVID-19.
Rol del anestesiólogo en el control del dolor al final de la vida en tiempos de COVID-19
Authors: Molina Melendres Estefanía Elizabeth , Cevallos Argoti Sandra Elizabeth 
Published: August 2022

RESUMEN
Introducción: La pandemia por COVID-19 ha provocado trascendentales retos para los sistemas sanitarios en el mundo entero; en efecto, las instituciones de salud han adecuado sus recursos humanos y de infraestructura para poder afrontarla, y muchos anestesiólogos han ocupado diferentes espacios para la atención del paciente en estado crítico a consecuencia de esta enfermedad. En este contexto, cuando las terapias que sostienen la vida no alcanzan los objetivos terapéuticos del paciente con COVID-19, el manejo del dolor y otros síntomas en el enfoque de los cuidados paliativos, constituyen un componente esencial de la atención.
Objetivo: Esta revisión tiene como objetivo analizar el estado actual de las investigaciones en lo referente al rol del anestesiólogo en el control del dolor al final de la vida en tiempos de COVID-19, considerando que el mismo no es exclusivamente biológico, sino total, en el que se incluye la dimensión social, espiritual y emocional del paciente, aspectos en los que estos especialistas no son preparados como parte de su pensum académico; para así proporcionar un manejo óptimo y altruista.
Metodología: El presente trabajo constituye una investigación teórica descriptiva de tipo documental, mediante la búsqueda, organización y revisión de artículos sobre el tema.
Conclusiones: Los beneficios de un adecuado manejo del dolor en el paciente críticamente enfermo son importantes para preservar la dignidad de la persona, así como para mejorar su condición de salud, esta pandemia ha puesto en evidencia la necesidad de formación en varios aspectos de cuidados paliativos para los anestesiólogos.
Protocolo ERAS en cirugía cardiaca electiva: una revisión teórico práctica
Authors: Guacales Zambrano Mónica Lorena , Chango Iza Milton Patricio 
Published: August 2022

Objetivo: describir y analizar las investigaciones científicas actuales en lo concerniente a las estrategias del protocolo ERAS (Enhanced Recovery After Surgery) en cirugía cardiaca electiva de pacientes adultos, de tal forma, que al abordar sus necesidades se optimiza la recuperación y se disminuyen las complicaciones perioperatorias en este tipo de procedimiento.
Material y métodos: se realizó una revisión bibliográfica sobre las estrategias que adopta el protocolo ERAS en cirugía cardiaca. Fuentes de información primaria: artículos científicos. Fuentes secundarias utilizadas: MEDLINE (a través de PubMed), Cochrane Central Register of Controlled Trials y ELSEVIER. Los artículos seleccionados describieron el uso del protocolo ERAS entre enero del año 2010 hasta diciembre del 2020 tomando en cuenta los parámetros de inclusión y exclusión.
Resultados: de 277 artículos científicos identificados, solo 40 fueron incluidos en esta revisión. Los resultados determinaron estrategias individuales que constituyen la base del protocolo ERAS actualmente, con el objetivo de facilitar : disminución de infección del sitio quirúrgico, acortamiento de la estancia hospitalaria, menor lesión renal, no indicación de transfusiones perioperatorias, decremento del riesgo de delirio posoperatorio y menor requerimiento de opioides perioperatorios.
Conclusión: se debe colocar en marcha el protocolo ERAS en la atención perioperatoria del paciente cardiópata y actualizarlo según los avances de la anestesia y cirugía cardiaca.
Utilidad del prono vigil en COVID – 19.
Authors: Aillon Almeida Abel Ricard , Illánez Jaime 
Published: August 2022

Resumen.
Introducción: La insuficiencia respiratoria secundaria al síndrome de distrés respiratorio agudo (SDRA) por COVID-19 es el proceso patológico más relevante y mortal de esta enfermedad. Entre las medidas de soporte para complementar el tratamiento del SDRA asociado a COVID-19 (CARDS), el decúbito prono (DP) y su potencial beneficio en pacientes conscientes es una consideración importante.
Objetivo: Realizar una revisión teórica de la evidencia que sustente la aplicabilidad del DP como estrategia de potencial beneficio en pacientes conscientes con insuficiencia respiratoria por COVID-19.
Metodología: Se realizó una búsqueda avanzada en las bases de datos de Pubmed y Google Scholar. Los términos utilizados fueron: “SARS-CoV-2 infection”; “COVID-19”; “Acute respiratory distress síndrome”; “Awake o non-intubated”; “Prone position” o “Prone positioning” los cuales, fueron operados con los términos booleanos “AND” y “OR. Se obtuvieron 33 artículos que cumplieron con los criterios de inclusión.
Resultados y Conclusiones: Dentro de las medidas de apoyo terapéutico en pacientes conscientes con CARDS leve a moderado la evidencia sugiere que la posición en DP parece ser segura, puede disminuir el esfuerzo y aplazar el deterioro respiratorio. Además, mejora la oxigenación retrasando, difiriendo e incluso prescindiendo de la necesidad de ventilación mecánica en casos seleccionados, especialmente si se asocia a ventilación no invasiva (VNI) y cánula nasal de alto flujo (CNAF); lo cual podría reducir la presión sobre los servicios de emergencia y cuidados intensivos, aunque su impacto real sobre los resultados clínicos, la mortalidad y las tasas de intubación aún no se ha establecido claramente.
Pengaruh Kelompok Kerja Guru (KKG) dan Profesionalisme Guru terhadap Prestasi Belajar Matematika Siswa SD Kecamatan Deket Kabupaten Lamongan
Authors: Widiastuti Wiwik Wahyu 
Published: August 2022

Teachers have a strategic role for creating vision of organizing learning based on the principle of professionalism. The requirement of teachers for professional can’t avoided, because of more development of the times and more the students and guardian students critically. One of effort for upgrading the professionalism of teachers through share activities and discuss between teachers in teacher organization. It is called teacher working group. The aim of this research are for determining effects from teacher working group and professionalism of teachers to mathematics learning achievement of students in cluster IV, district Deket, Lamongan with partial or simultaneously. The teacher working group and professionalism data took from questionnaire in all primary schools that include cluster IV in Lamongan, it consist of Srirande 1, Srirande 2, Pandan Pancur 2, Pandan Pancur 3, Plosoboden, and Rejotengah 2. Mathematics learning achievement data took from the average scores of mid and final test. Teacher working group is measured from indicator planning, performing, and evaluating. It measured by 4 competition based on Regulation of the Minister of National Education of the Republic of Indonesia number 16 year 2007 about Academic Qualification Standard and Teacher’s Competence. It consist of pedagogic, personality, and social. The methods of analyses used are frequency’s tables, pie-chart, bar-chart, boxplot, descriptive statistics and t-test. The result showed teacher working group and professionalism of teachers variables give effect to Mathematics learning achievement with partial or simultaneously.