bluuebunny/crossref_metadata_2025_split huggingface dataset:
Orbital and spectral characterization of the benchmark T-type brown dwarf HD 19467B
Authors: Maire A.-L. , Molaverdikhani K. , Desidera S. , Trifonov T. , Mollière P. , D’Orazi V. , Frankel N. , Baudino J.-L. , Messina S. , Müller A. , Charnay B. , Cheetham A. C. , Delorme P. , Ligi R. , Bonnefoy M. , Brandner W. , Mesa D. , Cantalloube F. , Galicher R. , Henning T. , Biller B. A. , Hagelberg J. , Lagrange A.-M. , Lavie B. , Rickman E. , Ségransan D. , Udry S. , Chauvin G. , Gratton R. , Langlois M. , Vigan A. , Meyer M. R. , Beuzit J.-L. , Bhowmik T. , Boccaletti A. , Lazzoni C. , Perrot C. , Schmidt T. , Zurlo A. , Gluck L. , Pragt J. , Ramos J. , Roelfsema R. , Roux A. , Sauvage J.-F. 
Published: June 2020

Context.Detecting and characterizing substellar companions for which the luminosity, mass, and age can be determined independently is of utter importance to test and calibrate the evolutionary models due to uncertainties in their formation mechanisms. HD 19467 is a bright and nearby star hosting a cool brown dwarf companion detected with radial velocities and imaging, making it a valuable object for such studies.Aims.We aim to further characterize the orbital, spectral, and physical properties of the HD 19467 system.Methods.We present new high-contrast imaging data with the SPHERE and NaCo instruments. We also analyze archival data from the instruments HARPS, NaCo, HIRES, UVES, and ASAS. Furthermore, we use proper motion data of the star from HIPPARCOSandGaia.Results.We refined the properties of the host star and derived an age of 8.0+2.0−1.0Gyr based on isochrones, gyrochronology, and chemical and kinematic arguments. This age estimate is slightly younger than previous age estimates of ~9–11 Gyr based on isochrones. No orbital curvature is seen in the current imaging, radial velocity, and astrometric data. From a joint fit of the data, we refined the orbital parameters for HD 19467B, including: a period of 398+95−93yr, an inclination of 129.8+8.1−5.1deg, an eccentricity of 0.56 ± 0.09, a longitude of the ascending node of 134.8 ± 4.5 deg, and an argument of the periastron of 64.2+5.5−6.3deg. We assess a dynamical mass of 74+12−9MJ. The fit with atmospheric models of the spectrophotometric data of the companion indicates an atmosphere without clouds or with very thin clouds, an effective temperature of 1042+77−71K, and a high surface gravity of 5.34+0.8−0.9dex. The comparison to model predictions of the bolometric luminosity and dynamical mass of HD 19467B, assuming our system age estimate, indicates a better agreement with the Burrows et al. (1997, ApJ, 491, 856) models; whereas, the other evolutionary models used tend to underestimate its cooling rate.
The Fornax Deep Survey with VST
Authors: Cantiello Michele , Venhola Aku , Grado Aniello , Paolillo Maurizio , D’Abrusco Raffaele , Raimondo Gabriella , Quintini Massimo , Hilker Michael , Mieske Steffen , Tortora Crescenzo , Spavone Marilena , Capaccioli Massimo , Iodice Enrica , Peletier Reynier , Barroso Jesús Falcón , Limatola Luca , Napolitano Nicola , Schipani Pietro , van de Ven Glenn , Gentile Fabrizio , Covone Giovanni 
Published: June 2020

Context.A possible pathway for understanding the events and the mechanisms involved in galaxy formation and evolution is an in-depth investigation of the galactic and inter-galactic fossil sub-structures with long dynamical timescales: stars in the field and in stellar clusters.Aims.This paper continues the Fornax Deep Survey (FDS) series. Following previous studies dedicated to extended Fornax cluster members, we present the catalogs of compact stellar systems in the Fornax cluster, as well as extended background sources and point-like sources.Methods.We derivedugriphotometry of ∼1.7 million sources over the ∼21 square degree area of FDS centered on the bright central galaxy NGC 1399. For a wider area, of ∼27 square degrees extending in the direction of NGC 1316, we providedgriphotometry for ∼3.1 million sources. To improve the morphological characterization of sources, we generated multi-band image stacks by coadding the best-seeinggri-band single exposures with a cut at full width at half maximum (FWHM) ≤ 0.″9. We used the multi-band stacks as master detection frames, with a FWHM improved by ∼15% and a FWHM variability from field to field reduced by a factor of ∼2.5 compared to the pass-band with the best FWHM, namely ther-band. The identification of compact sources, in particular, globular clusters (GC), was obtained from a combination of photometric (e.g., colors, magnitudes) and morphometric (e.g., concentration index, elongation, effective radius) selection criteria, also taking as reference the properties of sources with well-defined classifications from spectroscopic or high-resolution imaging data.Results.Using the FDS catalogs, we present a preliminary analysis of GC distributions in the Fornax area. The study confirms and extends further previous results that were limited to a smaller survey area. We observed the inter-galactic population of GCs, a population of mainly blue GCs centered on NGC 1399, extending over ∼0.9 Mpc, with an ellipticityϵ ∼ 0.65 and a small tilt in the direction of NGC 1336. Several sub-structures extend over ∼0.5 Mpc along various directions. Two of these structures do not cross any bright galaxy; one of them appears to be connected to NGC 1404, a bright galaxy close to the cluster core and particularly poor in GCs. Using thegricatalogs, we analyze the GC distribution over the extended FDS area and do not find any obvious GC sub-structure bridging the two brightest cluster galaxies, namely, NGC 1316 and NGC 1399. Although NGC 1316 is more than twice as bright of NGC 1399 in optical bands, usinggridata, we estimate a GC population that is richer by a factor of ∼3−4 around NGC 1399, as compared to NGC 1316, out to galactocentric distances of ∼40′ or ∼230 kpc.
CO+first-negative band emission: A tracer for CO in the Martian upper atmosphere
Authors: Raghuram Susarla , Bhardwaj Anil 
Published: June 2020

Context.Recently, the Imaging Ultraviolet Spectrograph (IUVS) on board the Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite observed CO+first-negative band limb emission in the Martian upper atmosphere.Aims.We aim to explore the photochemical processes in the Martian upper atmosphere, which drive this band emission.Methods.A photochemical model was developed to study the excitation processes of CO+first-negative band emission (B2Σ+→ X2Σ+) in the upper atmosphere of Mars. The number density profiles of CO2and CO from two different models, namely, Mars Climate Database (MCD) and Mars Global Ionosphere-Thermosphere (MGIT), were used to determine the limb intensity of this band emission.Results.By increasing the CO density by a factor of 4 and 8 in MCD and MGIT models, respectively, the modelled CO+first-negative band limb intensity profile is found to be consistent with the IUVS/MAVEN observation. In this case, the intensity of this band emission is significantly determined by the ionisation of CO by solar photons and photoelectrons, and the role of dissociative ionisation of CO2is negligible.Conclusions.Since CO is the major source of the CO+(B2Σ+), we suggest that the observed CO+first-negative band emission intensity can be used to retrieve the CO density in the Martian upper atmosphere for the altitudes above 150 km.
A comparison of delta wire technique versus extension block pinning in the treatment of bony Mallet finger
Authors: Chee Wai Hong , Gunasagaran Jayaletchumi , Ahmad Tunku Sara 
Published: June 2020

Abstract
Ziel Diese Studie vergleicht die klinischen Ergebnisse nach Delta-Draht-Technik (Gruppe 1 = 7 Patienten) mit den Ergebnissen nach Extensions-Block-Pinning (Gruppe 2 = 11 Patienten) in der Behandlung des knöchernen Mallet-Fingers.
Patienten und Methoden Sechs Monate postoperativ wurde bei allen Patienten das klinische Ergebnis nach den Crawford-Kriterien, die Schmerzen anhand einer visuellen Analogskale (VAS) und der DASH-Score ermittelt. Zusätzlich wurden die aktive Beweglichkeit und das Extensionsdefizit im Endgelenk sowie aufgetretene Komplikationen festgehalten.
Ergebnisse Patienten der Gruppe 1 hatten eine signifikant bessere Beugung im Fingerendgelenk, aber auch ein signifikant größeres Extensionsdefizit, obwohl sie signifikant früher ihre Arbeit wiederaufnahmen. Nach den Crawford-Kriterien erzielten 71 % der Patienten der Gruppe 1 und 100 % der Gruppe 2 ein exzellentes und gutes Ergebnis. Keine Unterschiede konnten bzgl. der OP-Dauer, der Schmerzen, dem DASH-Score und der Zeit bis zur knöchernen Heilung festgestellt werden.
Schlussfolgerung In der Kurzzeitbeobachtung werden mit Extension-Block-Pinning bessere Ergebnisse in der Behandlung des knöchernen Strecksehnenausriss am Fingerendglied erzielt als mit der Delta-Draht-Technik.
When Telestroke Programs Work, Hospital Size Really Does Not Matter
Authors: Nalleballe Krishna , Brown Aliza , Sharma Rohan , Sheng Sen , Veerapaneni Poornachand , Patrice Kelly-Ann , Shah Vishank , Onteddu Sanjeeva , Culp William , Lowery Curtis , Benton Tina , Joiner Renee , Kapoor Nidhi 
Published: June 2020

AbstractBackground There are still marked disparities in stroke care between rural and urban communities including difference in stroke-related mortality. We analyzed the efficiency of tissue plasminogen activator (tPA) delivery in the spoke sites in our telestroke network to assess impact of telecare in bridging these disparities.Methods We analyzed critical time targets in our telestroke network. These included door-to-needle (DTN) time, door-to-CT (D2CT) time, door-to-call center, door-to-neurocall, and total consult time. We compared these time targets between the larger and smaller spoke hospitals.Results Across all the 52 spokes sites, a total of 825 stroke consults received intravenous tPA. When compared with larger hospitals (>200 beds), the smaller hospital groups with 0 to 25 and 51 to 100 beds had significantly lower D2CT time (p-value 0.01 and 0.005, respectively) and the ones with 26 to 50 and 151 to 200 beds had significantly lower consult time (p-value 0.009 and 0.001, respectively). There was no significant difference in the overall DTN time when all the smaller hospital groups were compared with larger hospitals.Conclusion In our telestroke network, DTN times were not significantly affected by the hospital bed size. This shows that a protocol-driven telestroke network with frequent mock codes can ensure timely administration of tPA even in rural communities regardless of the hospital size and availability of local neurologists.
Prognosis of Pregnancy in Epileptics in Benin: A Case–Control Study
Authors: Adoukonou Thierry , Agbétou Mendinatou , Sidi Rachidi Imorou , Gnansounou Colombe , Accrombessi Donald , Hounzangbe-Adoukonou Yasmine , Gnonlonfoun Dieudonné , Kabibou Salifou , Tonato-Bagnan Josiane Angéline , Houinato Dismand 
Published: June 2020

Abstract

Objective The main purpose of this article is to define prognosis of pregnancies in epileptic women in Benin.

Methods This was a case–control study that included 54 epileptic women who had at least one pregnancy matched to 162 controls on age, pregnancy term, and monitoring center. Information about epilepsy, treatment, pregnancy, and childbirth were collected. A logistic regression with odds ratio (OR) calculation was used to study the association.

Results During pregnancy 22.22% of epileptic women experienced an increase in seizure frequency. Epileptics had more frequent miscarriages (OR: 1.84 [1.01–3.51]), more incidents during pregnancy (OR: 4.03 [1.04–15.60]), and were more often hospitalized (OR: 3.35 [1.46–7.69]) than women without epilepsy. They, more often, had premature children before 37 weeks of amenorrhea (OR: 2.10 [1.12–3.91]) and gave birth to low-birth-weight children (OR = 2.17 [1.00–4.76]).

Conclusion Occurrence of a pregnancy in an epileptic woman in Benin is at risk and requires multidisciplinary monitoring by both neurologist and obstetrician to reduce complications.
Fourth Ventricular Outflow Obstruction in an Infant with Ileal Atresia and Laryngomalacia: Endoscopic Management
Authors: Chowdhury Forhad H. , Haque Mohammod Raziul , Rumi Jalal Uddin Mohammod , Arifin Mohammod Samsul 
Published: June 2020

AbstractFourth ventricle outflow obstruction (FVOO) is a rare cause of obstructive hydrocephalus. In this study, we described a case of idiopathic FVOO with ileal atresia and laryngomalacia which was managed with endoscopic third ventriculostomy (ETV) and re-endoscopy. We also described the techniques of fenestration of Liliequist membrane and partial removal of arachnoid membrane over dorsum sella (DS) to prevent closure of fenestration and recurrence of hydrocephalus. The patient was a 4-month-old infant presented with progressively increasing head size, feeding difficulty, respiratory distress, and tense fontanel. The infant had a history of laparotomy for ileal atresia. CT scan showed panventriculomegaly due to FVOO. ETV with fenestration of Liliequist membrane was done on emergency basis. After operation, the patient improved clinically and radiologically. Four weeks later, the patient returned with recurrent hydrocephalus. Endoscopic reoperation showed closure of fenestration in arachnoid membrane (Lilieqiest membrane). Endoscopic refenestration with partial excision of arachnoid on DS was done. The patient again recovered radiologically and clinically till last follow-up. In idiopathic FVOO, ETV with wide fenestration of Liliequist membrane, preferably with partial removal of arachnoid on DS, may be very useful in treating hydrocephalus (HCP) and preventing recurrent HCP even in infants.
Burden of Illness Due to Fibromyalgia in a Neurology Clinic
Authors: Vijayan Beena Vasanthy , Nair Vijayan Chandrathil Parameswaran , M. Geethadevi 
Published: June 2020

Abstract

Background Fibromyalgia (FM) is a common disorder in general population and it causes an increased patient load in hospitals and specialty clinics. FM attendance will be high in clinics dealing with neuropathic pain and other pain syndromes. Though prevalence of FM has been studied in community and pain clinics in other countries, it has not so far been studied in India. So, a study is relevant and hence it was planned in neurology clinic of a teaching government hospital. At present, they are treated mainly by nonsteroidal anti-inflammatory drugs (NSAIDs) which are public health hazard.

Methods Using 2016 revision of 2010/2011 American College of Rheumatology criteria of FM, patients were screened in neurology OPD. Proportion and clinical profile were noted. Study was continued for 6 months till the sample size was met.

Results A total of 2,300 patients were screened. Two hundred and ninety-eight FM patients were identified among them. Proportion was 12.96%. Delayed diagnosis of more than a year occurred in 55%. Only 29.2% were treated, but none was offered cognitive behavioral therapy (CBT) before. NSAIDs for pain were given for 51.01%.

Conclusion Proportion of FM detected is considerable. Affection of homemakers and manual laborers, delayed diagnosis, coexisting comorbid illness, and treatment of pain with NSAIDs are causes of concern. Clinicians should be sensitized to clinical profile and criteria of FM. Patients should be diagnosed and treated by CBT at the earliest and NSAIDs should be avoided as far as possible.
Wernicke’s Encephalopathy: Typical Disease with an Atypical Clinicoradiological Manifestation
Authors: Verma Rajesh , Kumar Chetan 
Published: June 2020

Abstract
Wernicke’s encephalopathy is an acute neurological disorder caused due to thiamine deficiency. It is characterized by a triad of confusion, ataxia, and ophthalmoplegia. Wernicke’s encephalopathy can present with atypical clinical manifestations, particularly in setting of nonalcoholic background. Our patient manifested with clinical complaints of acute drowsiness, speech difficulty, and ataxia. Magnetic resonance imaging of the brain revealed T2 hyperintensity in bilateral medial thalami, globus pallidus, periaqueductal gray matter, dorsal pons, and dorsal medulla. The diagnosis of Wernicke’s encephalopathy was entertained and he well responded to parental thiamine therapy. The clinician should be aware about atypical presentation of Wernicke’s encephalopathy.
Microribbons composed of directionally self-assembled nanoflakes as highly stretchable ionic neural electrodes
Authors: Zhang Mingchao , Guo Rui , Chen Ke , Wang Yiliang , Niu Jiali , Guo Yubing , Zhang Yong , Yin Zhe , Xia Kailun , Zhou Binghan , Wang Huimin , He Wenya , Liu Jing , Sitti Metin , Zhang Yingying 
Published: June 2020

Significance
Direct-ink writing has been attracting significant attention as a three-dimensional printing method while symmetric structures can be mainly printed when a single ink is used. Here, we present the formation of asymmetric microstructures during printing and ink drying, induced by a symmetry-breaking self-assembly process of aligned two-dimensional nanoflakes in the viscous polymer matrix. The obtained structural variation in the printed microribbons can be controlled in a reproducible and standardizable manner by tuning the rheological properties of the printing ink. We further demonstrated the spontaneous transformation of as-printed microribbons to ultrastretchable springs upon stimulation that show superior nanoscale ionic transport behavior as soft and highly stretchable neural electrodes.
Single-shot temporal characterization of XUV pulses with duration from ∼10 fs to ∼350 fs at FLASH
Authors: Ivanov Rosen , Bermúdez Macias Ivette J , Liu Jia , Brenner Günter , Roensch-Schulenburg Juliane , Kurdi Gabor , Frühling Ulrike , Wenig Katharina , Walther Sophie , Dimitriou Anastasios , Drescher Markus , Sazhina Irina P , Kazansky Andrey K , Kabachnik Nikolay M , Düsterer Stefan 
Published: June 2020

Abstract
Ultra-short extreme ultraviolet pulses from the free-electron laser FLASH are characterized using terahertz-field driven streaking. Measurements at different ultra-short extreme ultraviolet wavelengths and pulse durations as well as numerical simulations were performed to explore the application range and accuracy of the method. For the simulation of streaking, a standard classical approach is used which is compared to quantum mechanical theory, based on strong field approximation. Various factors limiting the temporal resolution of the presented terahertz streaking setup are investigated and discussed. Special attention is paid to the cases of very short (∼10 fs) and long (up to ∼350 fs) pulses.
A novel calibration method for ball joint position in a posture adjustment system
Authors: Chu Wenmin , Huang Xiang , Li Shuanggao 
Published: June 2020

Abstract
In posture adjustment systems for large components of aircraft (LCA), composed of several numerical control locators (NCLs), the position deviation of the ball joint (BJ) connecting the LCA to the NCL is an important factor affecting the adjustment accuracy of LCA. Due to manufacturing and installation errors, it is impossible to calculate the precise position of the ball joint center (BJC) relative to the LCA via theoretical design models. To address this problem, a novel calibration method of the BJC position is proposed in this paper. Firstly, the influence of the position deviation of the BJC on the posture adjustment precision of the LCA is studied. Secondly, the calculation model of the BJC position is established in accordance with the relationship between the Z-axle displacement of the NCL and the position and posture variation of the LCA after each NLC rise. Thirdly, based on this model, the uncertainty of the BJC calibration is analyzed by Monte Carlo simulation. Finally, a simulated posture adjustment system, built in the laboratory and the BJC position is calibrated, using the method of force-position hybrid control (FPHC). The experimental results show that, compared with the conventional calibration method, the method proposed in this paper can calibrate the BJC position more accurately, and can greatly improve the precision of posture adjustment.
Highly transparent and conductive electrodes enabled by scalable printing-and-sintering of silver nanowires
Authors: Li Weiwei , Yarali Emre , Bakytbekov Azamat , Anthopoulos Thomas D , Shamim Atif 
Published: June 2020

Abstract
Silver nanowires (Ag NWs) have good promised for flexible and transparent electronics. However, It remains an open question on how to achieve large-scale printing of Ag NWs with high optical transparency, electrical conductivity, and mechanical durability for practical applications, though extensive research has been conducted for more than a decade. In this work, we propose a possible solution that integrates screen printing of Ag NWs with flash-light sintering (FLS). We demonstrate that the use of low-concentration, screen-printable Ag NW ink enables large-area and high-resolution patterning of Ag NWs. A critical advantage comes from the FLS process that allows low-temperature processing, short operational time, and high output rate—characteristics that fit the scalable manufacturing. Importantly, we show that the resultant Ag NW patterns feature low sheet resistance (1.1–9.2 Ohm sq−1), high transparency (75.2–92.6%), and thus a remarkable figure of merit comparable to state of the art. These outstanding properties of Ag NW patterns, together with the scalable fabrication method we propose, would facilitate many Ag NW-based applications, such as transparent heaters, stretchable displays, and wearable devices; here, we demonstrate the novel design of flexible and transparent radio frequency 5G antennas.
Photoresponse studies of Ar and K
+ confined in neutral and charged Fullerenes
Authors: Thuppilakkadan A , Varma H R 
Published: June 2020

Synopsis
The present work we study the photoresponse of isoelectronic systems (IES) such as Ar and K+
when they are confined inside neutral and charged fullerenes. The nature of the external cage (charged or neutral) play a significant role in determining the photoionization parameters along these isoelectronic members.
Ultrafast Structural Changes in Chiral Molecules Measured with Free-Electron Lasers
Authors: Schmidt P , Music V , Hartmann G , Boll R , Erk B , Bari S , Allum F , Baumann T M , Brenner G , Brouard M , Burt M , Coffee R , Dörner S , Galler A , Grychtol P , Heathcote D , Inhester L , Kazemi M , Larsson M , Lee J , Li Z , Lutmann A , Manschwetus B , Marder L , Mason R , Moeller S , Osipov T , Otto H , Passow C , Rolles D , Rupprecht P , Schubert K , Schwob L , Thomas R , Vallance C , von Korff Schmising C , Wagner R , Walter P , Wolf T J A , Zhaunerchyk V , Meyer M , Ehresmann A , Knie A , Demekhin Ph V , Ilchen M 
Published: June 2020

Synopsis
(X-ray) free-electron lasers are employed to site specifically interrogate atomic fragments during ultra-fast photolysis of chiral molecules via time-resolved photoelectron circular dichroism.
Excitation of vibrationally-excited ultralong-range strontium Rydberg molecules in quantum gases
Authors: Ding R , Whalen J D , Kanungo S K , Killian T C , Dunning F B , Yoshida S , Burgdörfer J 
Published: June 2020

Synopsis
The photoexcitation rate for ultralong-range Rydberg molecules is sensitive to the initial spatial sepa-ration of the atoms from which they are formed. Here we explore the photoexcitation of different molecular vibrational states as a probe of spatial correlations in a cold atomic gas.
Modeling ultracold lithium ion-atom collision
Authors: Pandey A , Niranjan M , Joshi N , Rangwala S A , Dulieu O 
Published: June 2020

Synopsis
Accurate estimation of the scattering properties at the ultracold temperatures is challenging due to the demand for the precise knowledge of interactions between the colliding partners. We identify the aspects of interactions that play the defining roles in the scattering calculations. We compute potential energy curves for the 7Li+-7Li, X2∑g
+ and A2∑u
+, and determine their collisional properties.