bluuebunny/crossref_metadata_2025_split huggingface dataset:
Non-diffusive angular momentum transport in rotating -pinches
Authors: Rüdiger G. , Schultz M. 
Published: November 2019

The stability of conducting Taylor–Couette flows under the presence of toroidal magnetic background fields is considered. For strong enough magnetic amplitudes such magnetohydrodynamic flows are unstable against non-axisymmetric perturbations which may also transport angular momentum. In accordance with the often used diffusion approximation, one expects the angular momentum transport to be vanishing for rigid rotation. In the sense of a non-diffusive

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effect, however, even for rigidly rotating

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-pinches, an axisymmetric angular momentum flux appears which is directed outward (inward) for large (small) magnetic Mach numbers. The internal rotation in a magnetized rotating tank can thus never be uniform. Those particular rotation laws are used to estimate the value of the instability-induced eddy viscosity for which the non-diffusive

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effect and the diffusive shear-induced transport compensate each other. The results provide the Shakura & Sunyaev viscosity ansatz leading to numerical values linearly growing with the applied magnetic field.
Improved photoprotection in melanized lichens is a result of fungal solar radiation screening rather than photobiont acclimation
Authors: BECKETT Richard Peter , SOLHAUG Knut Asbjørn , GAUSLAA Yngvar , MINIBAYEVA Farida 
Published: November 2019

AbstractSome lichenized ascomycetes synthesize melanic pigments in their upper cortices when exposed to ultraviolet light and high solar radiation. Our previous work showed that melanized chloro- and cyanolichens from both high light and more shaded habitats were less photoinhibited than pale ones during controlled exposure to high light. However, protection from high light might not necessarily be the consequence of just sun-screening by melanins in upper cortices. An inherent problem with earlier experiments was that the photobionts of melanized thalli might have received more light than those beneath pale cortices. The photobionts may therefore have possessed other light-induced tolerance mechanisms that gave protection from photoinhibition. Here, we aimed to test directly the inherent tolerance of lichen photobionts to photoinhibition. The method involved removing the lower cortices and medullas of three lichen species, Cetraria islandica, Crocodia aurata and Lobaria pulmonaria, and exposing the photobionts to light from below. Results confirmed that most of the improvement in tolerance to photoinhibition in melanized lichens derives from fungal melanization in the upper cortex. However, in C. islandica, the most heavily melanized species, algae from melanized thalli possessed a significantly higher tolerance to photoinhibition than those from pale thalli, suggesting that photobionts can also adapt themselves to high light.
Recruitment of the limpetPatella ulyssiponensisand its relationship with crustose coralline algae: patterns of juvenile distribution and larval settlement
Authors: Seabra M. I. , Cruz T. , Fernandes J. N. , Silva T. , Hawkins S. J. 
Published: November 2019

AbstractRecruitment of the limpetPatella ulyssiponensiswas investigated in relation to the presence of living crustose coralline algae (CCA) in rocky-shore habitats. Juvenile limpets (≤10 mm maximum shell length) were counted in CCA-present and CCA-absent habitats, on three shores in SW Portugal during summer 2007 and winter 2009. Furthermore, the settling response of laboratory-reared larvae ofP. ulyssiponensisto CCA-covered substratum, and bare-rock, was examined. Across the intertidal zone, we found a clear association between the distribution and abundance of juveniles and the presence of CCA. Although the presence of CCA was not an absolute requisite for juvenile occurrence, null juvenile densities were mostly recorded in CCA-absent areas. The highest juvenile densities (maximum of 64 individuals in 15 × 15 cm) were consistently found in CCA-dominated habitats, namely steep wave-exposed areas at low-shore and rock-pools. The hypothesis of CCA-enhanced settlement was not supported, as settlement intensities of laboratory-reared larvae were similar between chips of rock encrusted by CCA and chips of bare-rock. From the overall number of settlers onto CCA-encrusted rock chips, 51% were found in tiny pits lacking CCA. This was the first study of the settlement patterns of larvae of the genusPatellausing naturally occurring rocky substrata. These results are preliminary and should be confirmed with choice-experiments and improved monitoring of the position of settlers. We suggest that CCA plays a role in the recruitment ofP. ulyssiponensis, potentially promoting survivorship of early benthic stages, but possibly not enhancing settlement.
The impact of brief exposure to the second language on native language production: Global or item specific?
Authors: Degani Tamar , Kreiner Hamutal , Ataria Haya , Khateeb Farha 
Published: November 2019

AbstractBilinguals routinely shift between their languages, changing languages between communicative settings. To test the consequences of such changes in language use, 48 Arabic–Hebrew bilinguals named pictures in Arabic (L1) before and after a brief exposure manipulation, including either reading a list of Hebrew (L2) words aloud or performing a nonlinguistic task. Half of the items post-exposure were new and half were translation equivalents of the words presented during the L2 exposure task. Further, half of the items were very low-frequency L1 words, typically replaced by borrowed L2 words. Results show that across word types bilinguals were less accurate and produced more L2 cross-language errors in their dominant L1 following brief L2 exposure. Error rates were comparable for translation equivalents and new items, but more cross-language errors were observed post-exposure on translation equivalents. These findings demonstrate the engagement of both global whole-language control mechanisms and item-based competitive processes, and highlight the importance of language context and the dynamic nature of bilingual performance.
Combination of Recurrent Neural Network and Deep Learning for Robot Navigation Task in Off-Road Environment
Authors: Alamiyan-Harandi Farinaz , Derhami Vali , Jamshidi Fatemeh 
Published: November 2019

SUMMARYThis paper tackles the challenge of the necessity of using the sequence of past environment states as the controller’s inputs in a vision-based robot navigation task. In this task, a robot has to follow a given trajectory without falling in pits and missing its balance in uneven terrain, when the only sensory input is the raw image captured by a camera. The robot should distinguish big pits from small holes to decide between avoiding and passing over. In non-Markov processes such as the abovementioned task, the decision is done using past sensory data to ensure admissible performance. Applying images as sensory inputs naturally causes the curse of dimensionality difficulty. On the other hand, using sequences of past images intensifies this difficulty. In this paper, a new framework called recurrent deep learning (RDL) with combination of deep learning (DL) and recurrent neural network is proposed to cope with the above challenge. At first, the proper features are extracted from the raw image using DL. Then, these represented features plus some expert-defined features are used as the inputs of a fully connected recurrent network (as target network) to generate command control of the robot. To evaluate the proposed RDL framework, some experiments are established on WEBOTS and MATLAB co-simulation platform. The simulation results demonstrate the proposed framework outperforms the conventional controller based on DL for the navigation task in the uneven terrains.
CONTEXTUAL WORD LEARNING IN THE FIRST AND SECOND LANGUAGE
Authors: Elgort Irina , Beliaeva Natalia , Boers Frank 
Published: November 2019

AbstractAccess to definitions facilitates the learning of word meanings when novel words are encountered in reading. However, the memorial costs and benefits of inferring word meanings from context, compared to seeing definitions of unfamiliar words before reading, are not yet well understood. We conducted two experiments with adult L1 (English) and L2 (Chinese) readers to investigate whether the development of declarative and nondeclarative word knowledge benefits more when definitions are supplied before reading (errorless treatment) or after reading (trial-and-error treatment). Study participants encountered 90 target vocabulary items three times in short informative texts under errorless or trial-and-error conditions and entered their meaning inferences immediately after reading each text. Posttreatment, we evaluated participants’ declarative knowledge of the target items using a meaning generation (recall) task and nondeclarative knowledge using a self-paced reading task. The trial-and-error treatment followed by definitions resulted in a superior declarative and nondeclarative knowledge, compared to the errorless treatment, for L1 and L2 readers. Inference errors affected the development of declarative but not nondeclarative knowledge, and the trajectory of the development of nondeclarative knowledge was different for L1 and L2 readers. We interpret these findings in terms of the declarative and nondeclarative memory processes underpinning contextual word learning.
Ceftiofur-resistant Salmonella enterica serovar Heidelberg of poultry origin – a risk profile using the Codex framework
Authors: Carson Carolee , Li Xian-Zhi , Agunos Agnes , Loest Daleen , Chapman Brennan , Finley Rita , Mehrotra Manisha , Sherk Lauren M. , Gaumond Réjean , Irwin Rebecca 
Published: November 2019

Abstract
Codex published the ‘Guidelines for Risk Analysis of Foodborne Antimicrobial Resistance’ to standardise the approach for evaluating risk posed by foodborne antimicrobial-resistant bacteria. One of the first steps in the guidelines is to compile a risk profile, which provides the current state of knowledge regarding a food safety issue, describes risk management options and recommends next steps. In Canada, ceftiofur/ceftriaxone-resistant Salmonella enterica subsp. enterica serovar Heidelberg from poultry was identified as an antimicrobial resistance (AMR) food safety issue. The first objective of this article was to contextualise this food safety issue, using the risk profile format of the Codex Guidelines. A second objective was to evaluate the applicability of the Codex Guidelines. This risk profile indicated that ceftiofur/ceftriaxone-resistant S. Heidelberg (CSH) was commonly isolated from poultry and was associated with severe disease in humans. Ceftiofur use in poultry hatcheries temporally mirrored the prevalence of CSH from poultry meat at retail and from people with salmonellosis. The evidence was sufficient to indicate the need for risk management options, such as restricting the use of ceftiofur in poultry. The Codex Guidelines provided a useful approach to summarise data for decision-makers to evaluate an AMR food safety issue.
Merged bilateral arterial duct and circumflex retroesophageal right aortic arch in a fetus with normal intracardiac anatomy
Authors: Bichali Saïd , Grigorescu Romulus Cristian , Lefebvre Mathilde , Oriot Charlotte , Dhombres Ferdinand , Bonnet Damien , Houyel Lucile 
Published: November 2019

AbstractWe report the case of a fetus with anamnios sequence and VACTERL syndrome, having a circumflex right aortic arch. Two arterial ducts join anteriorly to form a common vessel that connects to the pulmonary trunk with confluent pulmonary branches. Embryologically, the dorsal right 6th aortic arch did not disappear and the aortic arch development stopped in a symmetrical state with an exceptional “Y-shaped” merged bilateral arterial duct.
Prenatal diagnosis and planned peri-partum care as a strategy to improve pre-operative status in neonates with critical CHDs in low-resource settings: a prospective study
Authors: Vijayaraghavan Aparna , Sudhakar Abish , Sundaram Karimassery Ramiayar , Kumar Raman Krishna , Vaidyanathan Balu 
Published: November 2019

AbstractBackground:Prenatal diagnosis and planned peri-partum care is an unexplored concept for care of neonates with critical CHDs in low-middle-income countries.Objective:To report the impact of prenatal diagnosis on pre-operative status in neonates with critical CHD.Methods:Prospective observational study (January 2017–June 2018) in tertiary paediatric cardiac facility in Kerala, India. Neonates (<28 days) with critical CHDs needing cardiac interventions were included. Pre-term infants (<35 weeks) and those without intention to treat were excluded. Patients were grouped into those with prenatal diagnosis and diagnosis after birth. Main outcome measure was pre-operative clinical status.Results:Total 119 neonates included; 39 (32.8%) had prenatal diagnosis. Eighty infants (67%) underwent surgery while 32 (27%) needed catheter-based interventions. Pre-operative status was significantly better in prenatal group; California modification of transport risk index of physiological stability (Ca-TRIPS) score: median 6 (0–42) versus 8 (0–64); p < 0.001; pre-operative assessment of cardiac and haemodynamic status (PRACHS) score: median 1 (0–4) versus 3 (0–10), p < 0.001. Age at cardiac procedure was earlier in prenatal group (median 5 (1–26) versus 7 (1–43) days; p = 0.02). Mortality occurred in 12 patients (10%), with 3 post-operative deaths (2.5%). Pre-operative mortality was higher in postnatal group (10% versus 2.6%; p = 0.2) of which seven (6%) died due to suboptimal pre-operative status precluding surgery.Conclusion:Prenatal diagnosis and planned peri-partum care had a significant impact on the pre-operative status in neonates with critical CHD in a low-resource setting.
Successful video-assisted thoracoscopic atrial appendectomy in a 4-year-old child with intractable atrial tachycardia and tachycardia-induced cardiomyopathy
Authors: Kwon Hye W. , Bae Eun J. , Kwak Jae G. , Seo Jeong W. 
Published: November 2019

AbstractA 4-year-old boy presented with intractable atrial tachycardia and heart failure. Antiarrhythmic drugs, such as digoxin, beta-blockers, and amiodarone were ineffective. Although we attempted multiple radiofrequency catheter ablations, the atrial tachycardia arising from left atrial appendage frequently recurred. Finally, we decided to perform atrial appendectomy using the thoracoscopic approach. Immediately after the appendectomy, the atrial tachycardia was terminated and restored to sinus rhythm. Left ventricular ejection fraction increased from 33 to 60% within 1 week. He had no arrhythmia during the subsequent 9-month follow-up period. Minimally invasive thoracoscopic surgery can be applied even in a small child who has focal atrial tachycardia originating from an atrial appendage.
Measuring the welfare effects of forests: an application of the travel cost model
Authors: Rogers Martha 
Published: November 2019

AbstractIn this paper, a travel cost model was applied to the case of firewood collection to assess how the inclusion of household fixed effects and how assumptions regarding conditions in the local labor market impacted resulting welfare estimates. To assess these impacts, a unique household panel data set from Kagera, Tanzania was used. It was estimated that, under the assumption of constrained labor markets, households in the Kagera region of Tanzania are willing-to-pay, on average, $120 per year (2016 USD) for access to local forests. These estimated figures were nearly 50 per cent higher when household fixed effects were excluded and nearly 10 per cent higher under the assumption of perfect labor markets. In addition, these results support previous research showing that, in many developing countries, households' demand for firewood is inelastic and that households would be willing to spend a significant amount of their resources on forest access.
Oocyte exposure to supraphysiological estradiol during ovarian stimulation increased the risk of adverse perinatal outcomes after frozen-thawed embryo transfer: a retrospective cohort study
Authors: Duan Chen-Chi , Li Cheng , He Yi-Chen , Xu Jing-Jing , Shi Chao-Yi , Hu Hong-Tao , Su Yun-Fei , Chen Lei , Tan Ya-Jing , Liu Zhi-Wei , Sheng Jian-Zhong , Fraser William D. , Wu Yan-Ting , Huang He-Feng 
Published: November 2019

AbstractMaternal supraphysiological estradiol (E2) environment during pregnancy leads to adverse perinatal outcomes. However, the influence of oocyte exposure to high E2 levels on perinatal outcomes remains unknown. Thus, a retrospective cohort study was conducted to explore the effect of high E2 level induced by controlled ovarian stimulation (COH) on further outcomes after frozen embryo transfer (FET). The study included all FET cycles (n = 10,581) between 2014 and 2017. All cycles were categorized into three groups according to the E2 level on the day of the human Chorionic Gonadotropin trigger. Odds ratios (ORs) and their confidence intervals (CIs) were calculated to evaluate the association between E2 level during COH and pregnancy outcomes and subsequent neonatal outcomes. From our findings, higher E2 level was associated with lower percentage of chemical pregnancy, clinical pregnancy, ongoing pregnancy, and live birth as well as increased frequency of early miscarriage. Preterm births were more common among singletons in women with higher E2 level during COH (aOR1 = 1.93, 95% CI: 1.22–3.06; aOR2 = 2.05, 95% CI: 1.33–3.06). Incidence of small for gestational age (SGA) was more common in both singletons (aOR1 = 2.01, 95% CI: 1.30–3.11; aOR2 = 2.51, 95% CI: 1.69–3.74) and multiples (aOR1 = 1.58, 95% CI: 1.03–2.45; aOR2 = 1.99, 95% CI: 1.05–3.84) among women with relatively higher E2 level. No association was found between high E2 level during COH and the percentage of macrosomia or large for gestational age. In summary, oocyte exposure to high E2 level during COH should be brought to our attention, since the pregnancy rate decreasing and the risk of preterm birth and SGA increasing following FET.
The Chagos Advisory Opinion and the Law of Self-Determination
Authors: KATTAN Victor 
Published: November 2019

AbstractThe Advisory Opinion of the International Court of Justice [ICJ] on the Separation of the Chagos Archipelago from Mauritius in 1965 has been hailed as a major victory by the government of Mauritius and by representatives of the Chagossians who were forcibly removed from the islands to make way for the establishment of an American military facility on the island of Diego Garcia at the height of the Cold War. The opinion was categorical: the process of decolonization of Mauritius was not lawfully completed when that country acceded to independence in 1968. The UK lost on every single argument it made before the Court and is under an obligation to bring its administration of the Chagos Archipelago to an end “as rapidly as possible”. This comment focuses on what the ICJ said about self-determination, and whether the Advisory Opinion could have consequences for future cases at the Court.
Onset and Cause of Increased Seismic Activity Near Pecos, West Texas, United States, From Observations at the Lajitas TXAR Seismic Array
Authors: Frohlich Cliff , Hayward Chris , Rosenblit Julia , Aiken Chastity , Hennings Peter , Savvaidis Alexandros , Lemons Casee , Horne Elizabeth , Walter Jacob I. , DeShon Heather R. 
Published: November 2019

AbstractIn recent years, numerous small earthquakes have occurred near the town of Pecos in West Texas; however, when this activity began and whether it was caused by increased petroleum industry activity has been uncertain because prior to 2017 there were few permanent seismograph stations in the region. We identify and locate earthquakes using data recorded since 2000 at TXAR, a sensitive 10‐station seismic array situated about 240 km south of Pecos. We thus show that in 2007, one earthquake occurred near Pecos, in 2009 several more occurred, and subsequently, activity has increased considerably, with more than 2000 events identified in 2017. A time‐of‐day and year‐by‐year analysis identifies geographic areas in West Texas where events are likely to be natural earthquakes and quarry blasts. However, for the Pecos events, annual seismicity rates increase along with annual volumes of petroleum production and fluid waste disposal, suggesting a causal link. Analysis of seismograms collected by the EarthScope Transportable Array indicates that the 2009 earthquakes had focal depths of 4.0–5.2 km below sea level, within or just below strata where petroleum is produced and/or wastewater is injected. The largest earthquake to date had magnitude ML3.7, but the recent high activity rates suggest that greater magnitudes may be possible. For the years 2000–2017, we provide a catalog of 10,753 epicenters of seismic events recorded at TXAR.
Uniaxially crumpled graphene as a platform for guided myotube formation
Authors: Kim Junghoon , Leem Juyoung , Kim Hong Nam , Kang Pilgyu , Choi Jonghyun , Haque Md Farhadul , Kang Daeshik , Nam SungWoo 
Published: November 2019

AbstractGraphene, owing to its inherent chemical inertness, biocompatibility, and mechanical flexibility, has great potential in guiding cell behaviors such as adhesion and differentiation. However, due to the two-dimensional (2D) nature of graphene, the microfabrication of graphene into micro/nanoscale patterns has been widely adopted for guiding cellular assembly. In this study, we report crumpled graphene, i.e., monolithically defined graphene with a nanoscale wavy surface texture, as a tissue engineering platform that can efficiently promote aligned C2C12 mouse myoblast cell differentiation. We imparted out-of-plane, nanoscale crumpled morphologies to flat graphene via compressive strain-induced deformation. When C2C12 mouse myoblast cells were seeded on the uniaxially crumpled graphene, not only were the alignment and elongation promoted at a single-cell level but also the differentiation and maturation of myotubes were enhanced compared to that on flat graphene. These results demonstrate the utility of the crumpled graphene platform for tissue engineering and regenerative medicine for skeletal muscle tissues.