bluuebunny/crossref_metadata_2025_split huggingface dataset:
Minimum Orbital Period of Precataclysmic Variables
Authors: Nelson L. , Schwab J. , Ristic M. , Rappaport S. 
Published: October 2018

Abstract
More than 20 precataclysmic variable (pre-CV) systems have now been discovered with very short orbital periods ranging from 250 minutes down to 68 minutes. A pre-CV consists of a white dwarf (WD) or hot subdwarf primary and a low-mass companion star, where the companion star has successfully ejected the common envelope (CE) of the primary progenitor, but mass transfer from the companion star to the primary has not yet commenced. In this short-period range, a substantial fraction of the companion stars are likely to be either brown dwarfs with masses ≲0.07 M
⊙ or stars at the bottom of the main sequence (MS; ≲0.1 M
⊙). The discovery of these short-period pre-CVs raises the question, what is the shortest possible orbital period of such systems? We ran 500 brown dwarf/low-mass MS models with Modules for Experiments in Stellar Astrophysics that cover the mass range from 0.002 to 0.1 M
⊙. We find that the shortest possible orbital period is 40 minutes, with a corresponding brown dwarf mass of 0.07 M
⊙ for an age equal to a Hubble time. We discuss the past evolution of these systems through the CE and suggest that many of the systems with present-day WD primaries may have exited the CE with the primary as a helium-burning hot subdwarf. We also characterize the future evolution of the observed systems, which includes a phase as CVs below the conventional period minimum.
The Extraordinary Outburst in the Massive Protostellar System NGC 6334I-MM1: Flaring of the Water Masers in a North–South Bipolar Outflow Driven by MM1B
Authors: Brogan C. L. , Hunter T. R. , Cyganowski C. J. , Chibueze J. O. , Friesen R. K. , Hirota T. , MacLeod G. C. , McGuire B. A. , Sobolev A. M. 
Published: October 2018

Abstract
We compare multi-epoch sub-arcsecond Very Large Array imaging of the 22 GHz water masers toward the massive protocluster NGC 6334I observed before and after the recent outburst of MM1B in (sub)millimeter continuum. Since the outburst, the water maser emission toward MM1 has substantially weakened. Simultaneously, the strong water masers associated with the synchrotron continuum point source CM2 have flared by a mean factor of 6.5 (to 4.2 kJy) with highly blueshifted features (up to 70 km s−1 from the LSR) becoming more prominent. The strongest flaring water masers reside 3000 au north of MM1B and form a remarkable bow shock pattern whose vertex coincides with CM2 and tail points back to MM1B. Excited OH masers trace a secondary bow shock located ∼120 au downstream. Atacama Large Millimeter Array images of CS (6–5) reveal a highly collimated north–south structure encompassing the flaring masers to the north and the nonflaring masers to the south seen in projection toward the MM3-UCHII region. Proper motions of the southern water masers over 5.3 years indicate a bulk projected motion of 117 km s−1 southward from MM1B with a dynamical time of 170 years. We conclude that CM2, the water masers, and many of the excited OH masers trace the interaction of the high-velocity bipolar outflow from MM1B with ambient molecular gas. The previously excavated outflow cavity has apparently allowed the radiative energy of the current outburst to propagate freely until terminating at the northern bow shock where it strengthened the masers. Additionally, water masers have been detected toward MM7 for the first time, and a highly collimated CS (6–5) outflow has been detected toward MM4.
Discovery of the Luminous, Decades-long, Extragalactic Radio Transient FIRST J141918.9+394036
Authors: Law C. J. , Gaensler B. M. , Metzger B. D. , Ofek E. O. , Sironi L. 
Published: October 2018

Abstract
We present the discovery of a slowly evolving, extragalactic radio transient, FIRST J141918.9+394036, identified by comparing a catalog of radio sources in nearby galaxies against new observations from the Very Large Array Sky Survey. Analysis of other archival data shows that FIRST J141918.9+394036 faded by a factor of ∼50 over 23 years, from a flux of ∼26 mJy at 1.4 GHz in 1993 to an upper limit of 0.4 mJy at 3 GHz in 2017. FIRST J141918.9+394036 is likely associated with the small star-forming galaxy SDSS J141918.81+394035.8 at a redshift z = 0.01957 (d = 87 Mpc), which implies a peak luminosity νL

ν
≳ 3 × 1038 erg s−1. If interpreted as an isotropic synchrotron blast wave, the source requires an explosion of kinetic energy ∼1051 erg some time prior to our first detection in late 1993. This explosion is most likely associated with a long gamma-ray burst (GRB), but the radio source could also be interpreted as the nebula of a newly born magnetar. The radio discovery of either of these phenomena would be unprecedented. Joint consideration of the event light curve, host galaxy, lack of a counterpart GRB, and volumetric rate suggests that FIRST J141918.9+394036 is the afterglow of an off-axis (“orphan”) long GRB. The long time baseline of this event offers the best available constraint in afterglow evolution as the bulk of shock-accelerated electrons become non-relativistic. The proximity, age, and precise localization of FIRST J141918.9+394036 make it a key object for understanding the aftermath of rare classes of stellar explosion.
Groundwater quality dataset of Semarang area, Indonesia
Authors: Irawan Dasapta , Putranto Thomas , Darul Achmad 
Published: October 2018

The regional environmental changes are affecting groundwater ecosystems in Semarang area. The development of new settlements, industrial complexes, and trade centers have degraded the groundwater setting of the city, which serves as the capital of Central Java Province. This has led us to compile several groundwater quality dataset that have been taken from 1992 to 2007. Our original motivation is to come up with an open dataset that can be used as the baseline for groundwater monitoring.
The dataset consists of 58 samples were taken in 1992, 1993, 2003, 2006, and 2007 using well point data from several reports from Ministry of Energy and Mineral Resources, engineering consultants, as well as from researchers from Universitas Diponegoro and Institut Teknologi Bandung. Each site has a set of 20 physical and chemical variables.
Après la séparation, que devient la parentalité ? De la collaboration à la guerre
Authors: Delage Michel 
Published: October 2018

Les séparations conjugales sont aujourd’hui fréquentes. Elles mettent plus ou moins à mal la parentalité. Trois cas de figures peuvent être schématiquement décrits :	Quand la séparation demeure compatible avec l’exercice d’une coparentalité suffisamment collaborative.	Quand la séparation est associée à une parentalité conflictuelle mais que des négociations demeurent possibles.	Quand la séparation s’accompagne d’une guerre impliquant l’acteur judiciaire, source alors de souffrances pouvant altérer gravement le développement des enfants.	Des propositions sont faites ici pour développer une collaboration contrainte.
Éloignement géographique et travail de séparation psychique : enjeux et dynamiques des liens familiaux dans les situations de séparations volontaires des hivernages polaires
Authors: Wawrzyniak Michel , Schmit Gérard 
Published: October 2018

Les auteurs explorent la dynamique des liens familiaux dans la situation de séparation volontaire des hivernages polaires au long cours. Les enjeux personnels et familiaux présidant à cet éloignement sont nombreux et variés. Cependant, quand l’approche du mythe familial s’avère possible, il devient clair que celui-ci dicte – paradoxalement ? – bien des séparations ré-unissant les familles.
The Spatially Resolved Refractometer
Authors: Burns Stephen A 
Published: October 2018

ABSTRACT
PURPOSE: To investigate factors controlling the aberrations of the eye, including accommodation, wavelength, and the apodization of the optics of the eye by cone directional selectivity.
METHODS: We constructed a new implementation of the Spatially Resolved Refractometer (SRR). This is an instrument, based on the Scheiner principle, that allows the rapid psychophysical measurement of the complete wavefront aberrations of the eye. We have investigated both the reproducibility of the measurements, and the effect of static accommodation and wavelength on the wavefront aberrations of the eye. In addition we combined the wave front aberrations with cone photoreceptor directionality to compute the modulation transfer function of the eye, at the retinal level.
RESULTS: The SRR measurements were rapid (4 minutes per measurements, 12 minutes per patient) and reproducible. There are significant changes in wavefront quality with accommodation, with optimal image quality near the resting point of accommodation. Image quality for polychromatic (white) light is strongly affected by both longitudinal and transverse chromatic aberration. Finally, we find that incorporating the effects of cone directionality into the calculation of image quality can increase image quality by up to 50%.
CONCLUSION: Calculation of a simple "optimal surgical shape" for wave-front guided refractive surgery will depend on improved understanding of the interplay between the biological and physical properties of the eye. [J Refract Surg 2000; 16: S566-S569]
Caregiving Burden of the Dyad in Cancer Situations
Authors: Valbuena Castiblanco Cindy , Chaparro Díaz Lorena 
Published: October 2018

Objective: To analyze the relationship of the care burden of the dyad in cancer situations in Bogotá. Methodology: Quantitative and correlation with standard dyadic design of reciprocal type. The sample consisted of 80 dyads (Caregiver-Cancer Patient). A characterization card of the dyad, caretaker - person with chronic illness, the Zarit burden Interview and the Instrument of burden of chronic illness for the patient were used. An analysis was made based on descriptive statistics and measures of central tendency, to know the profile of the participating dyads; Spearman correlation tests and canonical correlation were used; And non-parametric tests to evaluate the behavior of the variables of the selected measurement instruments. Results: It is corroborated that the female gender is predominant in the dyads and in productive age. The dyads of the study were characterized by taking little time of care. Family caregivers had a low overload and people with cancer expressed feelings ofemotional, physical and occupational aspects. We identified a weak relationship between caregiver andperson with cancer loads from Spearman correlation tests and canonical coefficient. Indicators of theburden on the quality of life mediated by the wells measured in the dyad through the Kruskall Wallistest, related to cultural and economic factors, were determined; and physical and psycho-emotionalwell-being. Conclusions: The dyads are in an individualized coping mediated by a short time link,present in the early stages of chronic disease; However, there are some characteristics that merit furtherresearch to deepen the phenomenon.
Aquablation among novice users in Canada: A WATER II subpopulation analysis
Authors: Zorn Kevin C. , Goldenberg S. Larry , Paterson Ryan , So Alan , Elterman Dean , Bhojani Naeem 
Published: October 2018

Introduction: Surgical management options for lower urinary tract symptoms/benign prostatic hyperplasia (LUTS/BPH) associated with prostates of small to moderate volume (<80 cc) are numerous; however, for men with enlarged prostates (>80 cc), many of these options are neither safe nor effective. Recently, Aquablation (PROCEPT BioRobotics, Inc., U.S.), a precise ultrasound-guided, robotically executed prostatic ablative procedure, has become available with U.S. Food and Drug Administration approval. Herein, we present three-month safety and efficacy data from the cohort of Canadian men included in the WATER II trial.
Methods: WATER II is a prospective clinical trial of the Aquablation system for the treatment of BPH in men with prostate volumes between 80 and 150 cc. Only patients from Canada were included for this analysis. At baseline, subjects completed International Prostate Symptom Score (IPSS), as well as several validated questionnaires, uroflowmetry and post-void residual volume measurements, and underwent standard laboratory blood assessment. These were repeated at one and three months post-Aquablation.
Results: A total of 19 subjects who met inclusion and exclusion criteria were enrolled at three Canadian academic sites. Mean pre-, one-month, and three-month post-treatment IPSS scores were 21.2±5.5, 9.9±6.9 (p<0.0001), and 5.0±4.5 (p<0.0001), respectively. Mean pre-, one-month, and three- month post-treatment maximum urinary flow rates (Qmax) were 6.6±3.1 ml/s, 19.5±6.1 ml/s (p<0.0001), and 23.1±9.2 ml/s (p<0.0001), respectively. The Clavien-Dindo grade 2 or higher event rate at three months was 31.6% (six events).
Conclusions: In this short-term, three-month analysis of Canadian men, Aquablation appears to provide a strong surgical alternative in patients with LUTS/BPH due to larger prostate volumes, with impressive functional outcomes, relatively short operative time and length of hospital stay, and acceptable complication and low transfusion rates.
Comparison of QuEChERS with Traditional Sample Preparation Methods in the Determination of Multiclass Pesticides in Soil
Authors: Ðurović-Pejčev Rada D , Bursić Vojislava P , Zeremski Tijana M 
Published: October 2018

Abstract
Background: The increased use of pesticides leads to permanent pollution of soil, and there is a need for continuous monitoring of these agrochemicals in soil. Objective: Three methods for the simultaneous determination of 12 pesticides belonging to eight chemical groups in soil samples were tested and compared based on analytical parameters. Methods: The quick, easy, cheap, effective, rugged, and safe (QuEChERS); traditional solid–liquid extraction (SLE); and Soxhlet extraction were used for soil sample preparation, while detection and quantification of pesticides were performed using gas chromatography–mass spectrometry (GC-MS). Results: The tested methods featured good sensitivity, and with the exception for carbofuran (Soxhlet method, LOD = 29 μg/kg), for the rest of the pesticides, the studied LODs were less than 12 μg/kg. Except for simazine and carbofuran, LODs obtained by Soxhlet extraction were lower than values obtained by other two methods, whereas QuEChERS gave lower LODs than the traditional SLE method for all compounds except atrazine and acetochlor. The recoveries obtained applying QuEChERS, traditional SLE, and Soxhlet methods for multiple analyses of soil samples fortified at 10, 75, and 200 μg/kg of each pesticide were in the ranges 54–103, 40–91, and 12–92%, respectively. Except for chlorothalonil, the highest recoveries were obtained by the QuEChERS method. Soxhlet was better than traditional SLE method for chlorothalonil, heptachlor, and aldrin; organophosphorus pesticides (fenitrothion and diazinon) and trifluralin, gave similar recoveries for both methods. All three methods were proven to be repeatable, with RSDs lower than 19%. Conclusions: Although all tested methods showed as satisfactory regarding most analytical parameters, QuEChERS method showed much better results in terms of confidence, indicating that traditional SLE and Soxhlet extraction still need improvements for determination of multiclass pesticides in soil samples.
The Marketing of Genetically Modified Food With Direct and Indirect Consumer Benefits: An Analysis of Willingness to Pay
Authors: Wilson Grant Alexander , Zhang David Di 
Published: October 2018

Genetically modified foods have traditionally been marketed as having direct industry benefits. Whereas, consumer benefits of genetically modified foods have been largely indirect, through price reduction. This study explores the marginal effects of differing value propositions on consumers’ acceptance and willingness to pay for genetically modified foods among Canadians. Consumers’ exposure to genetically food advertisements with industry-oriented benefits lowered both purchase intention and willingness to pay for genetically modified food. Consumers’ exposure to non-genetically modified food advertisements with direct consumer benefits increased both purchase intention and willingness to pay. Most noteworthy, consumers’ exposure to genetically modified food advertisements with both direct consumer benefits and industry-oriented benefits increased their willingness to pay. These findings provide insight into the future of successful genetically modified food marketing.
Simulated intention-to-treat analysis based on clinical parameters of patients at high risk for sleep apnea derivated to respiratory polygraphy
Authors: Borsini Eduardo Enrique , Blanco Magali , Ernst Glenda , Montenegro Paulina , Salvado Alejandro , Nigro Carlos 
Published: October 2018

Purpose Obstructive Sleep Apnea-Hypopnea Syndrome (OSAS) is a public health problem. We designed a pilot study to validate empiric indication of CPAP therapy in a population with moderate-to-high pre-test probabilities who underwent self-administered home-based respiratory polygraphy (RP).
Methods A cross-sectional simulation study was performed. CPAP therapy could be indicated by two independent blind observers. Observer 1´s decision was based on the results of STOP-BANG (SBQ) and Epworth Sleepiness Scale (ESS) and Observer 2 used all objective data provided by RP + SBQ + ESS.
Results We evaluated 1763 patients; 1060 men and 703 women (39.2%) with a mean age of 53.6±13.8 and a body mass index (BMI) of 32.8±7.5 kg/m2. We found evidence of mild (34.1%), moderate (26.6%), and severe (18.3%) There were Apnea-Hypopnea Index (AHI) relationship between > 5 or < 5 SBQ and RP AHI (p<0.05). BMI > 25 kg/m2 + snoring (S) + observed apnea (O) + 1 of the following: ESS > 11, hypertension (HT) or > 5 SBQ components showed sensitivity of 40% (CI95%:37.3-43) and specificity of 95.1% (CI93.4-96.4). The performance of 5 SBQ components with regard to gender and empirical CPAP therapy was; (women vs. men): AUC-ROC 0.625 (CI95%: 0.599-0.651) vs. 0.70 (CI95%:0.68-0.72), p<0.01, respectively.
Conclusions STOP-BANG and ESS made it possible to indicate CPAP reliably (low rate of false-positive results) in 20-40% of patients who needed such therapy according to clinical history and RP results. These clinical criteria performed better in male.
Access to CPAP treatment in patients with moderate to severe sleep apnea in a Latin American City
Authors: Nogueira Juan Facundo , Simonelli Guido , Giovini Vanina , Angellotti María Florencia , Borsini Eduardo , Ernst Glenda , Nigro Carlos 
Published: October 2018

Introduction: The most effective treatment for moderate to severe obstructive sleep apnea (OSA) is continuous positive airway pressure (CPAP) but adherence may be a limiting factor. Most compliance studies often only include patients under CPAP treatment, neglecting the importance of access to treatment. The aim of this study was to evaluate CPAP access and compliance in OSA patients, after CPAP indication and titration.
Methods: We included moderate to severe OSA patients, diagnosed by in-lab polysomnography (PSG), with CPAP indication and effective pressure titration. Between 12 to 18 months after treatment was indicated a telephone questionnaire was administered including questions about access to CPAP, reasons of no access, reported adherence and symptoms improvement.
Results: A total of 213 patients responded to the survey (171 males, mean age 53.4±13.5 and BMI 34.02±8.8 kg/m2). Almost a third of the patients (28.2%) did not initiate CPAP treatment. Out of 213, 153 patients (71.8%) started treatment with CPAP and 120 (56.3%) reported still being under treatment a year after indication, additionally, 85.8% reported that they were using it =4hs/night. Those who accessed to CPAP were on average, older age, had full coverage of treatment by their medical insurance, required lower effective pressure and experienced more severe sleepiness compared to those individuals who did not accessed to CPAP.
Discussion: A significant proportion of OSA patients with CPAP indication did not initiate and/or eventually abandoned CPAP. Approximately only 50% of the patients were still under treatment, with acceptable self-reported adherence rate and clinical response, one year after the initial treatment indication. Additional measures are necessary to increase access to CPAP and improve long-term compliance.
Adding emotionality to seductive details—Consequences for learning?
Authors: Kühl Tim , Moersdorf Franziska , Römer Michelle , Münzer Stefan 
Published: October 2018

SummaryAccording to the seductive detail effect, adding interesting but irrelevant information (i.e., seductive details) can be detrimental to learning success. In this study, it was explored within two experiments whether the valence of text‐based seductive details might affect learning outcomes differently. For Experiments 1 and 2, we pretested text‐based seductive details for their emotional valence (n = 32 or n = 25 students, respectively). For the main studies of Experiments 1 (n = 105) and 2 (n = 131), university students were randomly assigned to one of four conditions that varied with respect to the presence of seductive details and their emotional valence (no vs. positive vs. negative vs. neutral). Unexpectedly, results revealed in both experiments no seductive details effect and also no differences between the three seductive detail conditions for the used learning outcome measures retention and transfer. Possible reasons for these findings and their implications are discussed.
2D Metal Chalcogenide Nanopatterns by Block Copolymer Lithography
Authors: Yun Taeyeong , Jin Hyeong Min , Kim Dong‐Ha , Han Kyu Hyo , Yang Geon Gug , Lee Gil Yong , Lee Gang San , Choi Jin Young , Kim Il‐Doo , Kim Sang Ouk 
Published: October 2018

AbstractNanoscale structure engineering is in high demand for various applications of 2D transition metal dichalcogenides (TMDs). An edge‐exposed 2D polycrystalline MoS2 nanomesh thin film is demonstrated via block copolymer (BCP) nanopatterning. Molybdenum nanomesh structure is formed by direct metal deposition of hexagonal cylinder BCP nanotemplate and the following lift‐off process. Subsequent sulfurization of the molybdenum nanomesh creates MoS2 nanomesh thin films without any degradative etching step. The approach is applicable to not only other metal sulfides and oxides but also other nanoscale structures of TMD thin films including nanodot and nanowire array by means of various BCP nanotemplate shapes. As the edge site of MoS2 is highly active for NO2 sensing, the edge‐exposed MoS2 nanomesh demonstrates sevenfold enhancement of sensitivity for NO2 molecules compared to uniform thin film as well as superior reversibility even under 80% relative humidity environment. This structure engineering method could greatly strengthen the potential application of 2D TMD materials with the optimal customized nanoscale structures.