bluuebunny/crossref_metadata_2025_split huggingface dataset:
Social media bots and stock markets
Authors: Fan Rui , Talavera Oleksandr , Tran Vu 
Published: October 2019

AbstractThis study examines the link between information spread by social media bots and stock trading. Based on a large sample of tweets mentioning 55 companies in the FTSE 100 composites, we find significant relations between bot tweets and stock returns, volatility, and trading volume at both daily and intraday levels. These results are also confirmed by an event study of stock response following abnormal increases in the volume of tweets. The findings are robust to various specifications, including controlling for traditional news channel, alternative measures of volatility, information flows in pretrading hours, and different measures of sentiment.
Quantitative magnetic resonance imaging and histological hoof wall assessment of 3‐year‐old Quarter Horses
Authors: Pownder S. L. , Caserto B. G. , Bowker R. M. , Lin B. , Potter H. G. , Koff M. F. 
Published: October 2019

SummaryBackgroundFew noninvasive methods are available for equine hoof wall evaluation. The highly organised wall structures and composition of proteoglycans and collagens may make this region amenable to quantitative MRI (qMRI) techniques of T1ρ and T2 mapping to identify pathology related to proteoglycan content and collagen organisation respectively.ObjectiveTo establish normative T1ρ and T2 values of the equine hoof wall of 3‐year‐old Quarter Horses with histological comparison.Study designCadaveric anatomical study.MethodsSix cadaveric left thoracic feet from 3‐year‐old racing Quarter Horses with no reported lameness were evaluated using T1ρ and T2 mapping. Mapping was performed at six regions of interest at the toe of each hoof including proximal and distal regions of the inner epidermis, stratum lamellatum and corium. Histology was evaluated for standard hoof morphology and proteoglycan staining.ResultsT2 values of the stratum lamellatum and corium were similar (42.9 [95% CI: 41.6–44.2] ms and 44 [95% CI: 42.7–45.3] ms respectively), but both were significantly different to the inner epidermis (35.8 [95% CI: 34.5–37.1] ms, P<0.001). T1ρ values for the inner epidermis, stratum lamellatum and corium were significantly different (25.1 [95% CI: 23.1–27.1] ms, 44.4 [95% CI: 42.4–46.4] ms and 50.1 [95% CI: 48.1–52.1] ms, respectively, P<0.001). Histology demonstrated normal organised morphology. Proteoglycan staining was only visible in the stratum lamellatum and corium.Main limitationsCadaveric study with frozen samples used.ConclusionsVariation of qMRI metrics through the depth of the equine hoof wall was found. Although the highly ordered environment of collagen may contribute to T2 values, there was lack of evidence to support proteoglycan content as a major contributor of T1ρ values. It is possible T1ρ values had a greater dependence on total water content as the lowest values were seen in the epidermis. Additional research using qMRI is needed to determine mapping values in different disease states.
AnchovetaEngraulis ringensalong the Chilean coast: Management units, demographic units and water masses: Insights from multiple otolith‐based approaches
Authors: Garcés Cristóbal , Niklitschek Edwin J. , Plaza Guido , Cerna Francisco , Leisen Mathieu , Toledo Pamela , Barra Fernando 
Published: October 2019

AbstractThree management units (MUs) are used for stock assessment and fishery regulations of anchovetaEngraulis ringensin Chilean waters (>65% ofE. ringenslatitudinal range): MU‐I [18–25)°S, MU‐II [25–32)°S and MU‐III [32–42)°S. To evaluate whether these three MUs correspond to separate demographic units (DUs), as well as to estimate mixing rates and spatial distribution of these DUs, we combined three types of otolith natural markers: isotopic signatures (δ13C and δ18O), elemental compositions (Na, Mg, Mn, Sr and Ba) and microstructural indexes. All otolith markers were determined in nuclear and marginal regions of juveniles and adults from cohorts 2012 and 2015. Differences in core region markers indicated spatial segregation between three environmentally distinct nursery areas, probably related to Subtropical Water (MU‐I), Subantarctic Water (MU‐III) and the Subtropical Convergence (MU‐II). Comparison of core and marginal regions, from juvenile and/or adult fish, suggested that adult fish remained nearby nursery areas, separated from fish nursed in other MUs. Nonetheless, ontogenetic migrations from warmer (offshore) nursery habitats to cooler (deeper/more coastal) feeding habitats occurred within MUs. In summary, our results support the consideration of the three MUs as three separate DUs. Estimated mixing rates indicated MU‐II received contributions of 31% from MU‐I and 3% from MU‐III, while complete segregation existed between MU‐I and MU‐III. Such mixing rates between MU‐I and MU‐III seem large enough to justify its further consideration by stock assessment models and management procedures.
The impact of gender and perceived academic supervisory support on new faculty negotiation success
Authors: Fiset John , Saffie‐Robertson Maria Carolina 
Published: October 2019

AbstractThe successful negotiation of one's first academic appointment contract can have lasting implications for academics and institutions alike. The present study investigated the impact of gender and perceived academic supervisor support (PASS) on negotiation outcomes using a sample of recently appointed assistant professors of management from internationally accredited business schools. Overall, women were less likely to engage in negotiations and were less effective than their male counterparts when bargaining for elements that revolved around direct compensation (e.g., salary, research funding). Further, it was observed that PASS moderated the relationship between gender and negotiation effectiveness such that highly supportive academic supervisors improved negotiation effectiveness for women, but had little impact for men. We conclude by outlining important practical implications of the current study and outline how interventions aimed at improving supervisor support in doctoral programmes may attenuate some of the observed negotiation discrepancies.
Effect of peeling and unpeeling on yield, chemical structure, morphology and pasting properties of starch extracted from three diverse potato cultivars of Pakistan
Authors: Nawaz Asad , Ali Shinawar Waseem , Irshad Sana , Irshad Fatima , Ahmed Aftab , Sharmeen Zainab , Khan Imran 
Published: October 2019

SummaryThe current study investigates the comparison and quality characteristics of starches isolated from potatoes using different processing methods from three commercial varieties: Lady Rosetta, Asterix and Challenger, for the first time in Pakistan. The analysis of variance revealed that starch yield significantly (P < 0.05) depended on total solids, peeling (12.7%, 12.0% and 12.0%) and unpeeling (15.0%, 14.0% and 14.0%) of potatoes compared to potato varieties for Lady Rosetta, Challenger and Asterix, respectively. Moreover, pasting properties, protein content, redness and yellowness were increased in those starches isolated without peeling while carbohydrates and lightness were increased in peeled potato starches. Furthermore, Fourier‐transform infrared spectroscopy analysis revealed that protein (1200–1400 cm−1) was present in starch extracted without peeling. Besides, scanning electron microscopy analysis revealed oval‐shaped starch granules with no impurities in peeled potato starch. The findings suggest the suitability of peeling process for obtaining a high‐quality pure starch.
HLA‐B*15:47:01 allele with undefined serological equivalent considered as B Blank
Authors: Desoutter Judith , Jacob Valentine , Guillaume Nicolas 
Published: October 2019

AbstractWe report a discordance between complement‐dependent cytotoxicity and next‐generation sequencing molecular typing revealing HLA‐B*15:47:01 allele with undefined serological equivalent confirmed by high‐level immunization against the B15 serotype. Due to the high‐level immunization against HLA‐B15 and B70 antigens, we considered the HLA‐B*15:47:01 allele to be B Blank and not as B15 or B70 serological specificity.
A capacitated biobjective location problem with uniformly distributed demands in the UAV‐supported delivery operation
Authors: Shavarani Seyed Mahdi , Golabi Mahmoud , Izbirak Gokhan 
Published: October 2019

AbstractIn recent years, small unmanned aerial vehicles have been used to deliver medicine and goods as a solution to severe traffic jams and to serve the purpose of fast and effective delivery, especially for medical and emergency applications where time is vital. On the other hand, in the competitive market of today, retailers are considering the use of drones to minimize the customers’ waiting times and as a way to lower their transportation costs. This study aims to develop a biobjective mathematical model to account for the optimum number and spatial location of facilities among a set of candidate locations such that the total travel distance, costs, and lost demand are minimized simultaneously. It is assumed that the demand occurrence follows a Poisson distribution and is uniformly distributed along the network edges. The proposed biobjective capacitated facility location model is NP‐hard, thus nondominated sorting genetic algorithm II and reference‐point based nondominated sorting genetic algorithm are applied to solve the problem. The performance of the algorithms, quality of solutions, and the results are investigated and discussed.
Kaolin and seaweed‐based extracts can be used as middle and long‐term strategy to mitigate negative effects of climate change in physiological performance of hazelnut tree
Authors: Cabo Sandra , Morais Maria Cristina , Aires Alfredo , Carvalho Rosa , Pascual‐Seva Núria , Silva Ana Paula , Gonçalves Berta 
Published: October 2019

AbstractSpraying plants with exogenous substances have gained more attention due to its potential to reduce the negative impacts of heat and water stress in a climate‐changing environment. Therefore, the effects of spraying kaolin and Ascophyllum nodosum with and without irrigation on leaf gas exchange parameters, plant water status, electrolyte leakage, cuticular waxes, plant hormones and antioxidant enzymes, proline, malondialdehyde (MDA) content and lipid peroxidation of membranes of hazelnut trees were studied. Six different treatments with kaolin (K), A. nodosum (An), irrigation (I), kaolin with irrigation (Ki), A. nodosum with irrigation (Ani) and no irrigation (control) during two consecutive years (2016–2017) were applied in a hazelnut orchard of ‘Grada de Viseu’ cultivar located in Moimenta da Beira region, Northern Portugal. Results showed that K and An were effective for reducing hazelnut heat and drought stress by increasing the water relative content (RWC), net CO2 assimilation (A), water use efficiency (A/gs) and reducing the leaf mass per area (LMA), electrolyte leakage (EL). Moreover, concentration of ABA, MDA, proline and lipid peroxidation of membranes, as well the average content of antioxidant enzymes, was lower, suggesting that under K and An, plants have a better physiological performance than without these two exogenous substances. Nonetheless, these benefits only appear to be significant in the second year of the experiment showing that the use of both substances to mitigate climate change adverse effects should be considered as a long‐term strategy.
A new hydration kinetics model of composite cementitious materials, part 1: Hydration kinetic model of Portland cement
Authors: Zhang Zengqi , Liu Yu , Huang Lei , Yan Peiyu 
Published: October 2019

AbstractThis work is the first part of an overall research project that aims to model the hydration kinetics of modern composite cementitious materials. The aim of this part is to build a hydration kinetic model to characterize the hydration behavior of cement at all ages. In this paper, the nucleation and growth of CSH and the diffusion of water are described by a modified BNG model and a modified Jander's model. The kinetic parameters are obtained by simulative fitting of the model to the experimental data. The linear functions between the nucleation and growth rates and the W/C ratios are given in this paper. The apparent activation energy of the nucleation rate constant, growth rate constant, and generalized diffusion constant are approximately 36.0, 37.5, and 42.0 kJ/mol, respectively. Finally, the phase compositions of hardened cement paste are calculated according to the kinetic model and the reaction formula of cement.
Using technology to support the emotional and social well‐being of nurses: A scoping review
Authors: Webster Natalie L. , Oyebode Jan R. , Jenkins Catharine , Bicknell Sarah , Smythe Analisa 
Published: October 2019

AbstractAims(a) To review the literature on the use of technology to offer emotional and social support to nurses; (b) to identify and evaluate gaps in the research; (c) to assess whether a systematic review would be valuable and (d) to make recommendations for future research.DesignA robust methodological scoping framework was used as the basis for this review design. A manualized systematic approach to quality appraisal was implemented.Data SourcesBetween 11–12 June 2018, five databases were searched. A search of the grey literature was conducted alongside hand searching reference lists of included studies.Review MethodsTwo researchers conducted the literature search, data extraction and quality appraisal. Three searches were conducted, combining nursing and technological terms. A narrative review approach to knowledge synthesis was used to compare and evaluate included studies.ResultsEleven articles were retrieved. Results are presented under three subheadings: (a) text messaging and messenger apps; (b) social media and online forums; and (c) online interventions accessible via PC, smartphone and tablet. All included studies described how such provision could be beneficial; decreasing stress, isolation and anxiety and fostering a sense of community.ConclusionThe review identified a dearth of research into how technology can support the well‐being of nurses. A high proportion of studies were based on student nurse populations using small sample sizes, therefore further research is needed.ImpactTechnology may offer a sustainable and accessible means of providing support for nurses who find it difficult to communicate in person due to time pressures at work. It is important that the psychological well‐being of nurses is seriously addressed as more nurses are now leaving than joining the profession. Online interventions may offer a sustainable and accessible means of providing support for busy nursing staff who have difficulty finding time to communicate with one another face‐to‐face. Nurse retention is an international issue linked to quality of patient care. There are financial implications for healthcare providers who compensate for the workforce deficit by employing costly agency staff. This scoping review aims to map and evaluate the available literature on technology‐mediated support for the emotional and social well‐being of nurses. Recommendations for future research, policy and practice will be offered from the findings of the review.
Analytics of time management strategies in a flipped classroom
Authors: Ahmad Uzir Nora'ayu , Gašević Dragan , Matcha Wannisa , Jovanović Jelena , Pardo Abelardo 
Published: October 2019

AbstractThis paper aims to explore time management strategies followed by students in a flipped classroom through the analysis of trace data. Specifically, an exploratory study was conducted on the dataset collected in three consecutive offerings of an undergraduate computer engineering course (N= 1,134). Trace data about activities were initially coded for the timeliness of activity completion. Such data were then analysed using agglomerative hierarchical clustering based on Ward's algorithm, first order Markov chains, and inferential statistics to (a) detect time management tactics and strategies from students' learning activities and (b) analyse the effects of personalized analytics‐based feedback on time management. The results indicate that meaningful and theoretically relevant time management patterns can be detected from trace data as manifestations of students' tactics and strategies. The study also showed that time management tactics had significant associations with academic performance and were associated with different interventions in personalized analytics‐based feedback.
miR‐200c suppresses stemness and increases cellular sensitivity to trastuzumab in HER2+ breast cancer
Authors: Tang Hailin , Song Cailu , Ye Feng , Gao Guanfeng , Ou Xueqi , Zhang Lijuan , Xie Xinhua , Xie Xiaoming 
Published: October 2019

AbstractResistance to trastuzumab remains a major obstacle in HER2‐overexpressing breast cancer treatment. miR‐200c is important for many functions in cancer stem cells (CSCs), including tumour recurrence, metastasis and resistance. We hypothesized that miR‐200c contributes to trastuzumab resistance and stemness maintenance in HER2‐overexpressing breast cancer. In this study, we used HER2‐positive SKBR3, HER2‐negative MCF‐7, and their CD44+CD24− phenotype mammospheres SKBR3‐S and MCF‐7‐S to verify. Our results demonstrated that miR‐200c was weakly expressed in breast cancer cell lines and cell line stem cells. Overexpression of miR‐200c resulted in a significant reduction in the number of tumour spheres formed and the population of CD44+CD24− phenotype mammospheres in SKBR3‐S. Combining miR‐200c with trastuzumab can significantly reduce proliferation and increase apoptosis of SKBR3 and SKBR3‐S. Overexpression of miR‐200c also eliminated its downstream target genes. These genes were highly expressed and positively related in breast cancer patients. Overexpression of miR‐200c also improved the malignant progression of SKBR3‐S and SKBR3 in vivo. miR‐200c plays an important role in the maintenance of the CSC‐like phenotype and increases drug sensitivity to trastuzumab in HER2+ cells and stem cells.
A Comparative Characterization of the Mitochondrial Genomes of Paramoeba aparasomata and Neoparamoeba pemaquidensis (Amoebozoa, Paramoebidae)
Authors: Bondarenko Natalya , Volkova Ekaterina , Masharsky Alexey , Kudryavtsev Alexander , Smirnov Alexey 
Published: October 2019

AbstractMarine amebae of the genus Paramoeba (Amoebozoa, Dactylopodida) normally contain a eukaryotic endosymbiont known as Perkinsela‐like organism (PLO). This is one of the characters to distinguish the genera Neoparamoeba and Paramoeba from other Dactylopodida. It is known that the PLO may be lost, but PLO‐free strains of paramoebians were never available for molecular studies. Recently, we have described the first species of the genus Paramoeba which has no parasome—Paramoeba aparasomata. In this study, we present a mitochondrial genome of this species, compare it with that of Neoparamoeba pemaquidensis, and analyze the evolutionary dynamics of gene sequences and gene order rearrangements between these species. The mitochondrial genome of P. aparasomata is 46,254 bp long and contains a set of 31 protein‐coding genes, 19 tRNAs, two rRNA genes, and 7 open reading frames. Our results suggest that these two mitochondrial genomes within the genus Paramoeba have rather similar organization and gene order, base composition, codon usage, the composition and structure of noncoding, and overlapping regions.
Characterization of lactobionic acid evidencing its potential for food industry application
Authors: Cardoso Taís , Marques Caroline , Sotiles Anne Raquel , Dagostin João Luiz Andreotti , Masson Maria Lucia 
Published: October 2019

AbstractThe chemical configuration of the lactobionic acid (LBA) evidences its potential properties, among which the antioxidant, antimicrobial, and chelating activities stand out in the literature. However, few studies aim at testing and confirming them. The purpose of this study was to determine some selected LBA properties, whose characteristics are of interest for its use as an ingredient in foodstuffs. The discussion followed the results of Fourier‐Transform Infrared Spectroscopy (FTIR), X‐ray diffractometry (XRD), 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) radical, 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulphonic acid) (ABTS) radical, thermogravimetric/derivative thermogravimetry (TGA/DTG), minimal inhibitory concentration (MIC) by the diffusion disk test, scanning electron microscopy (SEM), and iron/calcium chelating methodologies. The XRD analysis revealed the presence of an amorphous halo and the absence of defined peaks, a fact possibly related to its high hygroscopicity. The FTIR showed characteristic bands of the LBA structure. Results from TGA/DG verified the LBA thermal degradation, which evidenced that LBA could participate in most food industry unit processes within the first mass loss event. Antioxidant capacity reached a maximum inhibition of 56% for LBA and the chelating capacity of the iron ion achieved 54% of chelated ions, while the calcium ions reached 15%. The results revealed high potential of LBA application for microbial inhibition, moisture retention, and texture maintenance throughout storage of food products.Practical ApplicationsDespite the potential of application of the LBA, few quantitative results demonstrate its ability of action in food. Even without permission in most countries around the world, more research with LBA will encourage the investigation of its toxicology, expanding the areas of application. Its thermal degradation profile and elevated solubility demonstrated the potential of LBA as food ingredient, performing moreover as antioxidant, chelating agent, antimicrobial, and texturizer. The results open the possibilities for many applications in the field of food chemistry and food industry.
Meat, dairy, and more: Analysis of material, energy, and greenhouse gas flows of the meat and dairy supply chains in the EU28 for 2016
Authors: aan den Toorn Stephen Ivan , Worrell Ernst , van den Broek Machteld A. 
Published: October 2019

AbstractTo decarbonize the European Union, protein consumption must transition to diets low in meat and dairy which will drastically change the material and energy flows in current meat and dairy supply chains. To understand the impacts on current flows, a baseline is required. Although recent studies have improved the scope of reported greenhouse gas (GHG) emissions, no quantitative overview exists including intermediate and final product flows. To address this knowledge gap, we structured the meat and dairy supply chains into a connected set of transformation nodes and distribution nodes. The former are processes transforming inputs into outputs, whereas the latter distribute the outputs to other processes using them as inputs. Currently, livestock play a central role in agriculture and other industries through the consumption of 271 Mt fodder crops, 108 Mt grain, 85 Mt grazed biomass, 49 Mt oil meal, and 16 Mt feed by‐products. This feed is transformed into 64 Mt dairy and 35 Mt meat which ensures that the EU28 is a net exporter of meat and dairy while providing 25 Mt of by‐products. This production also leads to 435 Mt CO2‐eq. with the main contribution from beef cattle (35%), dairy cattle (32%), and swine (20%). Thus, the lower GHG intensities of dairy products compared to meat do not imply a low contribution to the total emissions. By mapping the material, energy, and GHG emission flows, we have created a baseline suitable for identifying potential supply chain changes and their related GHG increase or decrease resulting from the protein transition.