bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tuneable properties of carbon quantum dots by different synthetic methods
Authors: Nallayagari A. R. , Sgreccia E. , Pizzoferrato R. , Cabibbo M. , Kaciulis S. , Bolli E. , Pasquini L. , Knauth P. , Di Vona M. L. 
Published: July 2021

AbstractCarbon quantum dots (CQD) were prepared from three different precursors and by three bottom-up synthesis methods: classical pyrolysis of citric acid (CAP), microwave irradiation of glucose (GM), and hydrothermal treatment of glucosamine hydrochloride (GAH). CQD were further functionalized using various nitrogen-containing compounds: 6-aminohexanoic acid, 1,6-diaminohexane, N-octylamine, dimethylamine, and tryptophan. Special attention was dedicated to investigate how the combination of synthetic method and starting material affected the nature and properties of CQD. The analysis indicated that CAP were good candidates for covalent post-functionalization, GM allowed an easy passivation, and GAH permitted the direct introduction of nitrogen into the core. The size distribution showed a core–shell structure for CQD functionalized with an aminoacid by microwave irradiation, whereas the thermal decomposition evidenced the degradation of functionalizing molecules and the presence of pyridinic and pyrrolic nitrogen after hydrothermal synthesis. Photoluminescence spectra revealed important differences between the synthesis techniques, related to the occurrence of surface states, and the highest fluorescence quantum yield for hydrothermally prepared CQD. These approaches led to CQD with properties that can be exploited in many fields from energy conversion to sensing.
Stressful Events and Adolescent Psychopathology: A Person-Centred Approach to Expanding Adverse Childhood Experience Categories
Authors: MacLochlainn Justin , Mallett John , Kirby Karen , McFadden Paula 
Published: July 2021

AbstractStress from cumulative adverse childhood experiences (ACEs) can pose a serious risk of experiencing anxiety, depression, and other mood disorders in adolescence. However, there is a paucity of research identifying specific profiles or combinations of exposure to other forms of stressful life events and their impact on adolescent psychopathology. This study attempted a conceptual expansion of the ACE checklist by examining these stressful events. The study used cross-sectional data from a modified version of the CASE Study survey where 864 adolescents (56% female, n = 480), aged from 11 – 18 years were recruited from four post-primary schools in the North-West region of NI. Latent class analysis of the 20-item stressful events checklist revealed 3 distinct risk classes: a low-risk class (53.5%), at-risk class (42.7%), and an immediate-risk class (3.8%). Results showed those at most risk of adolescent psychopathology had the highest probability of encountering interpersonal relationship issues, experiencing family dysfunction, and having close friends experiencing psychological difficulties. Findings indicate that the original ten ACE categories may be too narrow in focus and do not capture the wide range of childhood adversity. Expanding the ACE checklist to include other stressful events is discussed as these may also be antecedents to psychopathologic responses.
Question-aware memory network for multi-hop question answering in human–robot interaction
Authors: Li Xinmeng , Alazab Mamoun , Li Qian , Yu Keping , Yin Quanjun 
Published: July 2021

AbstractKnowledge graph question answering is an important technology in intelligent human–robot interaction, which aims at automatically giving answer to human natural language question with the given knowledge graph. For the multi-relation question with higher variety and complexity, the tokens of the question have different priority for the triples selection in the reasoning steps. Most existing models take the question as a whole and ignore the priority information in it. To solve this problem, we propose question-aware memory network for multi-hop question answering, named QA2MN, to update the attention on question timely in the reasoning process. In addition, we incorporate graph context information into knowledge graph embedding model to increase the ability to represent entities and relations. We use it to initialize the QA2MN model and fine-tune it in the training process. We evaluate QA2MN on PathQuestion and WorldCup2014, two representative datasets for complex multi-hop question answering. The result demonstrates that QA2MN achieves state-of-the-artHits@1 accuracy on the two datasets, which validates the effectiveness of our model.
Trend Analysis and Simulation of Human Vulnerability Based on Physical Factors of Riverbank Erosion Using RS and GIS
Authors: Chowdhury Tayabur Rashid , Ahmed Zia , Islam Sabina , Akter Shetu , Ambinakudige Shrinidhi , Kung Hsiang-te 
Published: July 2021

AbstractThis study aims to analyze the pattern of bank erosion and simulate the physical aspects of vulnerability in the lower Meghna River, Bangladesh using remote sensing (RS) and geographic information systems (GIS). The physical factors of vulnerability were analyzed using GIS-based Structured Query Language (SQL). A questionnaire survey, GPS survey and field observation survey were conducted for collecting the primary data in the study area. The secondary data were mainly satellite image collected from the United States Geological Survey (USGS) website. Using time series Landsat images (MSS, TM and OLI-TIRS), this study analyzed 36 years of erosion and accretion process in the Mehendiganj Upazila region from 1980 to 2016. The result indicates that an enormous amount of land (4470.47 ha) was submerged by the river and average land loss rate was 124.18 ha/year. The study quantifies the number of vulnerable households beneath the present condition and how much it will be altered after a positive/negative change with the factors of vulnerability related to the households. Simulation data reveals that under the present physical condition, 43.88% of households were identified as severely vulnerable. The output of this study can be used in the classification of vulnerable households and for the improvement of the physical infrastructure development process near the erosion prone areas, also helps to mitigate environmental disaster in the developing countries.
Journey to Indo-América
Authors: Dorais Geneviève 
Published: July 2021

The American Popular Revolutionary Alliance (APRA) was a Peruvian political party that played an important role in the development of the Latin American left during the first half of the 1900s. In Journey to Indo-América, GenevieÌve Dorais examines how and why the anti-imperialist project of APRA took root outside of Peru as well as how APRA's struggle for political survival in Peru shaped its transnational consciousness. Dorais convincingly argues that APRA's history can only be understood properly within this transnational framework, and through the collective efforts of transnational organization rather than through an exclusive emphasis on political figures like APRA leader, Víctor Raúl Haya de la Torre. Tracing circuits of exile and solidarity through Latin America, the United States, and Europe, Dorais seeks to deepen our appreciation of APRA's ideological production through an exploration of the political context in which its project of hemispheric unity emerged. This title is also available as Open Access on Cambridge Core.
The Electoral Politics of the English Jacobins and Its Legacy, 1796–1807
Authors: Scriven Tom 
Published: July 2021

AbstractHistorians of radicalism have long held that following the repression of the English Jacobins in 1794–95, open agitation by plebeian reformers remained dormant until 1802, when they reemerged in a more clearly constitutionalist pose to fight a number of contests in that year's general election. According to this view, the contests led directly to Sir Francis Burdett's victory at the 1807 Westminster election, a foundational moment for nineteenth-century radicalism. This article argues instead that the previously overlooked English Jacobin intervention at the 1796 general election was the ultimate foundation for the 1807 election victory and far more significant than the contests evident in 1802. While this argument indicates that the Jacobin organizations for radical reform were not in a steep terminal decline by 1796, as is widely assumed, it also undermines the notion that the electoral politics of the 1802–1807 period was a major novelty. There was nevertheless not a clear-cut continuity from 1796 to 1807. This article demonstrates that in 1796 Jacobin political thought led to the development of a pure style of electioneering that rejected corrupt practices in order to turn the electoral process into a venue for the enaction of general will through the open use of sovereign reason. Between 1802 and 1804, this position was abandoned in favor of a more traditional, pragmatic and patricianly form of electioneering. However, this article concludes with a major revision of the 1807 Westminster victory by illustrating that, far from an innovation, it was a direct revival of the “purity” pioneered by the Jacobin contests of 1796.
Watching you descend, I help others rise: the influence of leader humility on prosocial motivation
Authors: Silard Anthony , Miao Chao , Owens Bradley P. 
Published: July 2021

AbstractThe fundamental nature of humility and prosocial motivation entails transcending self-interest to enact behaviors that benefit others. We theorize that leader humility may enact a self-transcendent contagion effect that will manifest in enhanced follower prosocial motivation. Due to the fundamental nature of humility, this construct holds great promise in understanding how contextual signals (i.e., leader behaviors) shape prosocial motivation in followers. In this study, we find that leader humility impacts follower prosocial motivation through followers' perception of work meaningfulness. Specifically, we found that leader humility is positively related to prosocial motivation. We also found that this relationship is mediated by followers' perception of work meaningfulness, and that this mediation is moderated by followers' perception of relational vitality. Theoretical and practical implications are discussed.
Gender differences in nutrition literacy levels among university students and employees: a descriptive study
Authors: Svendsen Karianne , Torheim Liv E. , Fjelberg Vibeke , Sorprud Anita , Narverud Ingunn , Retterstøl Kjetil , Bogsrud Martin P. , Holven Kirsten B. , Myhrstad Mari C. W. , Telle-Hansen Vibeke H. 
Published: July 2021

Abstract
Folic acid supplementation during pregnancy modulates hepatic methyl metabolism and genes expression profile of neonatal lambs of different litter sizes
Authors: Wang Bo , Jian Luyang , Li Heqiong , Li Zhen , Luo Hailing , Gao Yuefeng 
Published: July 2021

AbstractMaternal folic acid (FA) plays an important role in the fetus development, but it is unknown the response of hepatic metabolism in the offspring from different litter sizes to maternal FA supplementation. In the present study, this was done by feeding the ewes with 0, 16 and 32 mg/(kg·DM) FA supplemented diet during pregnancy and analysing the hepatic one-carbon metabolism-related indices and gene expression in the neonatal lambs of different litter sizes (twins, TW; triplets, TR). Regardless of litter sizes, the concentrations of folate, methionine, S-adenosylmethionine and DNA methyltransferase increased significantly, but homocysteine and S-adenosylhomocysteine decreased in the liver of newborn lambs from ewes whose diet was supplemented with FA. In TW, maternal FA status has little effect on hepatic genes expression profile of newborn lambs, and no significant enriched pathway was found. However, DEG involved in cell proliferation such asCCNA2,CCNB2,CCNE2,CDK1andBUB1were significantly enriched when the ewes were supplemented with FA in TR groups. In addition, nucleotide synthesis-related genes such asPOLD1,POLD2,MCM4andMCM5were enriched markedly in DNA replication and pyrimidine metabolism pathways in triplets when a higher FA ingestion [32 mg/(kg·DM)] was implemented in ewes. This finding demonstrated that the hepatic methyl metabolism in TW and TR newborn lambs was regulated by maternal FA status. The hepatic cell proliferation and nucleotide metabolism related genes in TR were more susceptible to maternal dietary FA supplementation during pregnancy.
Caloplaca tephromelae(Teloschistaceae), a new lichenicolous species from Tasmania
Authors: Kantvilas Gintaras , Suija Ave , Motiejūnaitė Jurga 
Published: July 2021

AbstractCaloplaca tephromelaeKantvilas, Suija & Motiej., a lichenicolous species growing on saxicolous thalli of species ofTephromela, is described from Tasmania. The new species is characterized by lecanorine to zeorine apothecia with a whitish grey thalline margin devoid of anthraquinone pigments, a non-inspersed hymenium, paraphyses without oil vacuoles and ascospores 10–14 × 5–8 μm, with a septum 5–8 μm thick. It is compared with selected taxa ofCaloplacas. lat. that share these salient features. Molecular data support the distinctiveness of the new species but do not suggest any obvious close relatives.
Co-occurrence of pathogen assemblages in a keystone species the common cockle Cerastoderma edule on the Irish coast
Authors: Albuixech-Martí Sara , Culloty Sarah C. , Lynch Sharon A. 
Published: July 2021

AbstractDespite coinfections being recognized as the rule in animal populations, most studies focus on single pathogen systems. Pathogen interaction networks and the drivers of such associations are lacking in disease ecology studies. Common cockle Cerastoderma edule populations are exposed to a great diversity of pathogens, thus making them a good model system to investigate. This study examined the diversity and prevalence of pathogens from different taxonomic levels in wild and fished C. edule on the Irish coast. Potential interactions were tested focussing on abiotic (seawater temperature and salinity) and biotic (cockle size and age, and epiflora on shells) factors. No Microsporidia nor OsHV-1μVar were detected. Single infections with Haplosporidia (37.7%) or Vibrio (25.3%) were more common than two-pathogen coinfected individuals (9.5%), which may more easily succumb to infection. Fished C. edule populations with high cockle densities were more exposed to infections. Higher temperature and presence of epiflora on cockle shells promoted coinfection in warmer months. Low seawater salinity, host condition and proximity to other infected host species influenced coinfection distribution. A positive association between two Minchinia spp. was observed, most likely due to their different pathogenic effect. Findings highlight the major influence that ecological factors have on pathogen interactions and host–pathogen interplay.
The enduring myth of endemic age discrimination in the Australian labour market
Authors: Taylor Philip , Earl Catherine 
Published: July 2021

AbstractIt has often been stated by older people's advocates that discrimination affecting older people is commonplace and ongoing in the Australian labour market. In this article, we contrast such rhetoric with a review of evidence from recent large-scale surveys which demonstrates that low and declining numbers of Australians experience age discrimination, while highlighting the complexity of the phenomenon. We identify the emergence of a fake ‘age’ advocacy that is acting to the detriment of an informed public discourse concerning issues of older workers’ employment. To counter this we propose five underlying principles for advocacy on ageing and work: countering myths concerning the extent and nature of age barriers in the labour market; avoiding and challenging the use of age stereotypes in making the business case for older workers’ employment; recognition that age interacts in complex ways with a range of other factors in determining people's experiences of the labour market; challenging public understanding that is grounded in the notion that generational conflict is inevitable; and discarding traditional notions of the lifecourse in order to overcome disjunctions and contradictions that hamper efforts to encourage and support longer working lives.
Application of Cryo-Electron Microscopy on Drug Discovery
Authors: Vittaladevaram Viswanath , Kuruti Kranthi 
Published: July 2021

AbstractThe key aspect for development of novel drug molecules is to perform structural determination of target molecule associated with its ligand. One such tool that provides insights towards structure of molecule is Cryo-electron microscopy which covers biological targets that are intractable. Examination of proteins can be carried out in native state, as the samples are frozen at -175 degree Celsius i.e. cryogenic temperatures. In addition to this, there were no limits for molecular and functional structures of proteins that can be imagined in 3-dimensional form. This includes ligands which unravel mechanisms that are biologically relevant. This will enable to better understand the mechanisms that are used for development of new therapeutics. Application of Cryo-electron microscopy is not limited to protein complexes and is considered as non-specific. Intervention of Cryo-EM would allow to analyse the structures and also able to dissect the interaction with therapeutic molecules. The study determines the usage of cryo-EM for providing resolutions that are acceptable for lead discovery. It also provides support for lead optimization and also for discovery of vaccines and therapeutics.
Dynamics of weedy rice soil seedbank under different control strategies in Italian rice fields: survey and model study
Authors: Andres André , Fogliatto Silvia , Bastiaans Lammert , Vidotto Francesco 
Published: July 2021

AbstractThe abundance of weedy rice (Oryza sativa L.) in the soil seedbank was estimated in 2011 in Italian rice (Oryza sativa L.) fields with different histories of imidazolinone-resistant Clearfield® rice varieties (CL), non-Clearfield® varieties (NCL), and planting methods. A model was used to predict weedy rice seedbank dynamics over time under different control strategies. Soil samples were taken from 50 rice fields cultivated with CL varieties consecutively for 0, 1, 2, or 3 yr, and weedy rice seedbank data were used in a model considering eight scenarios: (A) rice monoculture with CL and NCL varieties in alternate years; (B) 2 yr of CL, followed by 1 yr with NCL; (C) 3 yr of CL followed by 1 yr of NCL; (D) rice monoculture with only CL; (E) rice monoculture with only NCL; (F) 2 yr of CL followed by 1 yr of rotation with another crop (CR), and then by an additional year with NCL; (G) 1 yr of CR followed by 2 yr of CL, and then by 1 yr of NCL; (H) 2 yr of CR followed by 2 yr of CL. The weedy rice seedbank exceeded 1,000 seeds m−2 in the surveyed fields with no significant differences between rice planting methods. Highest densities were found in fields cultivated for 1 yr with CL varieties. Simulations indicated that where CL varieties were used in rice monoculture, the susceptible weedy rice seedbank was gradually reduced, producing a depletion after 17, 13, 11, and 9 yr in scenarios A, B, C, and D, respectively. The weedy rice seedbank increased in NCL monoculture (E) and declined significantly in crop rotation scenarios (F, G, H). The simulations indicated that the introduction of crop rotation is crucial for obtaining a relatively fast reduction of weedy rice seedbank and delaying the evolution of herbicide-resistant populations.
Differences in selectivity between bermudagrass and goosegrass (Eleusine indica) to low-rate topramezone and metribuzin combinations
Authors: Brewer John R. , Askew Whitnee L. B. , Askew Shawn D. 
Published: July 2021

AbstractGoosegrass [Eleusine indica (L.) Gaertn.] remains problematic for bermudagrass [Cynodon dactylon (L.) Pers.] turf managers due to the ineffective, selective control of mature plants with available postemergence herbicides and lack of sufficient residual activity from those herbicides to control seedling plants. Topramezone controls mature E. indica, but past efforts to suppress potential injury to bermudagrass turf have been inconsistent. We hypothesized that metribuzin at 210 g ai ha−1 in admixture with topramezone would improve bermudagrass tolerance while conserving mature E. indica control. In preliminary field studies, metribuzin mixed with topramezone at 1.2 or 2.5 g ae ha−1 applied twice at a 3-wk interval reduced bermudagrass injury and white discoloration compared with topramezone applied alone, but metribuzin did not safen bermudagrass to mesotrione. Topramezone at 3.7 g ha−1 plus 210 g ha−1 metribuzin applied twice at a 3-wk interval offered improved bermudagrass tolerance while it still controlled mature E. indica during 15 field and 2 greenhouse studies in Virginia. This program offered a 10-fold decrease in suprathreshold duration of white discoloration compared with topramezone alone at 6.1 g ha−1. Bermudagrass absorbed three times less radioactivity than E. indica at timings up to 48 h after treatment with [14C]topramezone. Bermudagrass also metabolized twice as much topramezone compared with E. indica at 48 h after treatment. Metribuzin reduced 14C absorption by approximately 25% in both species. These studies confirm the performance of a novel, low-dose topramezone plus metribuzin program for mature E. indica control in bermudagrass turf and suggest that selectivity between bermudagrass and E. indica to topramezone is due to differential absorption and metabolism. The fact that metribuzin reduces topramezone absorption in both species suggests that it may help reduce bermudagrass phytotoxic response to topramezone, but its role in altering selectivity between bermudagrass and E. indica may be due to other factors.
On the Form Drag Coefficient Under Ridged Ice: Laboratory Experiments and Numerical Simulations From Ideal Scaling to Deep Water
Authors: Zu Y. , Lu P. , Leppäranta M. , Cheng B. , Li Z. 
Published: July 2021

AbstractThe bottom topography of ridged sea ice differs greatly from that of other sea‐ice types. The form drag of ridge keels has an important influence on sea‐ice drift and deformation. In this study, both laboratory experiment (LabE) and fluid dynamics numerical simulation (FDS) have been carried out for a physical ridge model in a tank to better understand the quantitative characteristics of the form drag. The LabEs covered both laminar and turbulent conditions. The local form drag coefficient of a keel, Cdw, varied with the keel depth hw and the slope angle αw in the turbulent regime. After validated by the LabE measurements, the FDSs were employed to extend the parameterization from the finite water depth to deep water. The results gave Cdw = 0.68∙ln (αw/7.8°), R2 = 0.998, 10° ≤ ≤ 90°, with Cdw ranging from 0.17 to 1.66, when the keel depth was much less than the water depth. For a large ridging intensity (keel depth/spacing ≥0.01), the variation of the local form drag coefficient and its contribution to total drag coefficient were sensitive to the keel slope angle. Assuming the log‐normal distribution for this angle, the average value of the local form drag coefficient was 0.75, recommended for sea‐ice dynamic models.