bluuebunny/crossref_metadata_2025_split huggingface dataset:
Publication characteristics and outlets of school and educational psychology scholars around the globe
Authors: Kim Eui Kyung , Begeny John C. , Hida Rahma , Wang Jiayi , Jones Renee , Oluokun Helen 
Published: July 2018

AbstractAlthough a few prior studies have explored the publication outlets of school and educational psychology scholars employed within the United States, past research has not yet examined the publication outlets of such scholars working outside of the United States. With the aim of addressing this gap in the literature and increasing empirical data related to internationalization in school and educational psychology, the present study gathered data about the publication outlets among international scholars in the field since 2000. Several findings are reported, such as the number of books, chapters, and journal articles published by participants, as well as the names of the journals that participants most frequently published in—within and across global regions. One key finding from the study was that school and educational psychology scholars around the globe frequently publish in discipline‐specific journals, but generally publish in a wide range of journals that focus on specific topics (e.g., behavior, child development). Additionally, it was found that the large majority of authors from our study published their studies in English.
Linking rock weathering, rockwall instability and rockfall supply on talus slopes in glaciated hanging valleys (Swiss Alps)
Authors: Messenzehl Karoline , Viles Heather , Otto Jan‐Christoph , Ewald Andreas , Dikau Richard 
Published: July 2018

AbstractIn high‐alpine valleys undergoing glacier retreat, the spatial distribution of talus slopes and their sediments have been frequently used as a proxy for rockfall activity. However, within this ‘sediment‐dominated’ research focus, the deglaciated source rockwalls are often portrayed in an oversimplified way. Here, we investigate 12 rockwall‐talus systems in three glaciated hanging valleys in the Swiss Alps and explore the role of source rockwalls on the spatial pattern of talus slopes and their paraglacial rockfall activity. Data from field‐based talus slope surveys, rockwall geotechnical studies, rock temperature monitoring, frost cracking modeling and GIS‐based topoclimatic analyses are evaluated by ergodic reasoning in a principal component analysis to identify patterns of rockwall‐talus systems with respect to their topoclimatic, rock mechanical and paraglacial controls. The results show that four main factors (frost cracking, permafrost probability, rockwall morphometry and mechanical preconditioning by rock mass strength and joint orientation) combine to dictate the paraglacial and spatial variability of sediment production, rockfall activity and block size. Our study demonstrates that more emphasis must be given to source rockwalls as their instability and weathering are directly linked to landform and material characteristics of talus deposits.
CPAP to diagnose laryngeal clefts by flexible endoscopy in infants
Authors: Trachsel Daniel , Hammer Jürg 
Published: July 2018

AbstractBackgroundLaryngeal clefts (LC) are uncommon but important causes of stridor in infants. Direct laryngoscopy is the recommended method for the detection of LC because LC may be missed by flexible endoscopy. As laryngomalacia by far outnumbers any other cause of stridor in this age group flexible bronchoscopy is usually the preferred method for the evaluation of significant infantile stridor. The aim is to illustrate how the application of CPAP assists the detection of LC during flexible endoscopy.MethodContinuous positive airway pressure (CPAP) is applied via endoscopy mask during flexible endoscopy, titrated to open the upper esophageal sphincter, and to spread the inter‐arytenoid folds.ResultsThe application of CPAP of 10‐15 cmH2O resulted in visual unmasking of otherwise obscured LC in four young children assessed for congenital stridor.ConclusionCPAP helps visualize LC by flexible endoscopy obviating transition to direct laryngoscopy and manual exploration.
Making Progress Towards «Green» Propellants
Authors: Dejeaifve Alain , Fantin André , Monseur Lara , Dobson Rowan 
Published: July 2018

AbstractStabilisers are used in propellants to prevent the various effects such as oxidation, chain scission, energy loss and uncontrolled heat generation that are caused by homolytic and heterolytic cleavage of the weakest Nitrogen‐Oxygen bond of the nitrate ester functional group. Conventional stabilisers for nitrocellulose‐based propellants belong to a‐aromatic amines (e. g., diphenylamine, 4‐nitro‐N‐methylaniline…) or b‐aromatic urea derivatives (e. g., Akardite, centralite…) and are/or produce highly toxic and/or potentially carcinogenic species at some point during a propellant's lifetime. There is an obvious need for alternative stabilisers presenting a low toxicity profile and providing efficiencies similar to, or better than conventional stabilisers. This paper presents novel, environmentally friendly, efficient and readily‐available stabilisers for use in nitrocellulose‐based compositions. With REACh legislation (1907/2006), industry in Europe has made progress in using less toxic compounds, that are often more environmentally‐friendly. The aim of this work is to go beyond REACh and to anticipate the inclusion of other molecules that produce non‐ or less toxic daughter products and that can fulfil their role in the propellant's formulation.
An ethyl acetate fraction of Artemisia capillaris (ACE‐63) induced apoptosis and anti‐angiogenesis via inhibition of PI3K/AKT signaling in hepatocellular carcinoma
Authors: Jung Kyung Hee , Rumman Marufa , Yan Honghua , Cheon Min Ji , Choi Jin Gyu , Jin Xing , Park Sunghouk , Oh Myung Sook , Hong Soon‐Sun 
Published: July 2018

In cancer treatment, herbal medicines may be a good choice because of the reduced risk of adverse side effects. Artemisia capillaris has been recognized as a promising candidate due to its hepatoprotective effects. Herein, we investigated whether A. capillaris‐derived fraction (ACE‐63) could inhibit the progression of hepatocellular carcinoma (HCC) and its underlying mechanism. In this study, ACE‐63 effectively inhibited the growth and proliferation of HCC cells. ACE‐63 induced apoptosis, as observed using Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining, which was accompanied with increases in cleaved Poly (ADP‐ribose) polymerase (PARP) and caspase‐3 in HCC cells. Additionally, the pro‐apoptotic effect of ACE‐63 was demonstrated by a decrease in the expression of the X‐linked inhibitor of apoptosis protein (XIAP) and survivin via a loss of mitochondrial membrane potential. In an ex vivo model, ACE‐63 significantly inhibited tumor cell growth and induced apoptosis by increasing the expression of cleaved caspase‐3 and DNA fragmentation. In addition, ACE‐63 decreased the expression of hypoxia‐inducible factor‐1α and vascular endothelial growth factor and inhibited tube formation of human umbilical vein endothelial cells. A mechanistic study revealed that ACE‐63 effectively suppressed the PI3K/AKT/mTOR signaling pathways, which were observed as a target signaling by phosphokinase array. Taken together, our findings demonstrate that ACE‐63 could not only efficiently induce apoptosis but also inhibit the growth/angiogenesis of human HCC cells by blocking the PI3K/AKT/mTOR signaling pathway, suggesting that ACE‐63 may be a new chemotherapeutic candidate against HCC.
High‐performance liquid chromatography/electrospray ionisation mass spectrometric characterisation of metabolites produced by Pseudovibrio sp. W64, a marine sponge derived bacterium isolated from Irish waters
Authors: Choudhary Alka , Naughton Lynn M. , Dobson Alan D.W. , Rai Dilip K. 
Published: July 2018

RationaleIn recent years, metabolites produced by Pseudovibrio species have gained scientific attention due to their potent antimicrobial activity. Recently, we also have assessed the antibacterial activities of Pseudovibrio sp. W64 isolates against Staphylococcus aureus, where only the dominant tropodithietic acid (TDA) was identified. However, characterisation of other metabolites is necessary as these metabolites may also serve as potent antimicrobial agents.MethodsLiquid chromatography/tandem mass spectrometry (LC/MS/MS), aided by accurate mass measurements, was employed to screen and characterise a range of metabolites produced by Pseudovibrio sp. W64 via assessment of ethyl acetate fractions generated from bacterial cultures.ResultsThirteen metabolites unique to the bacterial culture were detected and their chemical structures were assigned by MS/MS and accurate mass measurements. Among the thirteen metabolites, a methyl ester of TDA, a number of cholic acid derivatives, and amino diols and triols were characterised.ConclusionsPseudovibrio sp. W64 produces methylated TDA in addition to TDA, and metabolises lipids and amino acids in the cell‐culture medium. To the best of our knowledge, this is the first report of methylated TDA, cholic acid and its various analogs, and sphinganine being detected in this Pseudovibrio strain. The data generated may help to better understand the biochemical processes and metabolism of bacterial strains towards discovery of antimicrobial agents from marine sources.
Diversity of river fishes influenced by habitat heterogeneity across hydrogeomorphic divisions
Authors: Spurgeon J. J. , Pegg M. A. , Parasiewicz P. , Rogers J. 
Published: July 2018

AbstractFreshwater fish communities are structured through complex interactions among multiple spatial scales. Efforts to conserve and rehabilitate fish communities in riverine systems can benefit from an understanding of how processes across spatial scales influence species diversity patterns. We assessed species diversity at different hierarchical spatial scales and changes in species composition along the longitudinal gradient of the Niobrara River basin, Great Plains, USA. We assessed the contribution of α‐ and β‐diversity components to γ‐diversity at five spatial scales (i.e., mesohabitat, site, reach, segment, and river) using an additive partitioning approach. The observed mean β‐diversity was significantly greater than expected at the site, reach, and segment spatial scales. The most significant difference between expected and observed β‐diversity occurred at the segment spatial scale and suggests differences in community structure along the Niobrara River. Additive partitioning of diversity components provided a framework with which to assess patterns at multiple hierarchical levels. Our results suggest that changes in channel geomorphic and hydrologic conditions provide the impetus for species sorting resulting in unique fish assemblages along the Niobrara River. Conservation of species diversity for Great Plains fishes and other similar systems will likely benefit from considering species filtering processes at multiple spatial scales and maintaining intact hydrologic regimes across unique geomorphic boundaries.
Housing providers' insights on the benefits of sustainable affordable housing
Authors: Olanrewaju AbdulLateef , Tan Seong Yeow , Abdul‐Aziz Abdul‐Rashid 
Published: July 2018

AbstractThe present research aims to investigate the insights of housing providers on potential benefits of sustainable affordable housing. Housing providers need certainty on the benefits of sustainable affordable housing for homebuyers. We used a cross‐sectional survey questionnaire consisting of 23 benefits of sustainable affordable housing administered to 121 experts from the housing industry. In total, 82% of the housing professional respondents believed that sustainable affordable housing offered all 23 benefits included in the survey. The first five main benefits were an increase in the comfort of homeowners, the enjoyment of natural ventilation, a reduction in water bills, a reduction in electricity bills and an increase in housing values. An exploratory factor analysis returned 5 components: environmental, energy, social, cost and status. The findings provide insight into the drivers of sustainable affordable housing. A framework for the benefits of sustainable affordable housing was developed. The results will be useful for policy‐makers, developers, place managers, housing associations and academics attempting to increase the supply and demand of sustainable affordable housing.
Thickness and temperature‐dependent study of Co/Si interface
Authors: Kumar Anil , Brajpuriya Ranjeet , Singh Priti 
Published: July 2018

Thin films of cobalt (10, 40, and 100 nm) are deposited on Si substrate by electron beam physical vapor deposition technique. After deposition, 4 pieces from each of the wafers of silicon substrate were cut and annealed at a temperature of 200°C, 300°C, and 400°C for 2 hours each, separately. X‐ray diffraction, atomic force microscopy, and transmission electron microscopy (TEM) are used to study the structural and morphological characteristics of the deposited films. To obtain TEM images, Co films are deposited on Cu grids; so far, no such types of TEM images of Co films are reported. Structural studies confirm nanocrystalline nature with hexagonal close packed structure of the deposited Co film at lower thickness, while at higher thickness, film structure transforms to amorphous with lower surface roughness value. The particle sizes in all the cases are in the range of 3 to 5 nm. Micro‐Raman spectroscopy is also used to study the phase formation and chemical composition as a function of thickness and temperature. The results confirm that the grown films are of good quality and free from any impurity. Studies show the silicide formation at the interface during deposition. The appearance of new band at 1550 cm−1 as a result of annealing indicates the structural transformation from CoSi to CoSi2, which further enhances at higher annealing temperatures.
Silica‐Coated Metal Oxide Nanoparticles: Magnetic and Cytotoxicity Studies
Authors: Basu Parbati , De Kalyanashis , Das Soma , Mandal Amit K. , Kumar Anoop , Jana Tushar K. , Chatterjee Kuntal 
Published: July 2018

AbstractMetal oxide nanoparticles are one of the most important categories of nanomaterials. Increasing use of metal oxide nanoparticles necessitates an improved understanding of their potential impact on human health. We demonstrated that silica(SiO2) coated magnetic transitional metal oxides (α‐Fe2O3, NiO, Co3O4) nanoparticles were facilely synthesized through wet chemical methods. Structural, morphological and compositional details of these nanoparticles have been investigated. Optical absorption study was also carried out to compare the bare and silica coated metal oxide nanoparticles. Magnetic measurement of these three silica coated metal oxide samples reveals their ferromagnetic behavior. The biocompatibility of nanoparticles is the prerequisite for their applications in biomedicine, but can be misleading due to toxicity of these nanomaterials. Cytotoxicity was evaluated for these materials via Cell culture, MTT (3‐(4,5‐dimethyl‐2‐thiazolyl)‐2,5‐diphenyl‐tetrazolium bromide) assay in human normal embryonic kidney cell line (HEK‐293) and human breast adenocarcinoma cell line (MCF‐7) which shows its non‐toxicity towards HEK‐293 and the effectiveness of the sample towards the destruction of MCF‐7. Measurements of nanoparticles treated cells by morphological assessment assay demonstrate that these nanomaterials exhibit excellent cellular viability. Thus, silica coated magnetic metal oxide nanomaterials appear to be a new roadmap in the search of biocompatible resources for medical applications.
In Situ XAS Study on Growth of PVP‐Stabilized Cu Nanoparticles
Authors: Nayak Chandrani , Bhattacharyya Dibyendu , Jha Shambhu N. , Sahoo Naba K. 
Published: July 2018

AbstractCu nanoparticles have been synthesized from copper acetate using NaBH4 as a reducing agent and poly(N‐vinyl‐2‐pyrrolidone) (PVP) as a stabilizing agent under an inert ambience. In‐situ time‐resolved X‐ray absorption spectroscopy (XAS) measurement, which include both X‐ray near edge structure (XANES) and extended X‐ray absorption fine structure (EXAFS) techniques, have been carried out in a specially designed measurement cell during the formation of Cu nanoparticles using a specialized computer controlled flow setup. Principal Component Analysis (PCA) and Multivariate Curve Resolution with Alternating Least Squares (MCR‐ALS) analysis have been successfully applied to the time‐resolved Cu K‐edge XANES data recorded during the growth of Cu nanoparticles. PCA of the XANES spectra predicted three chemical species present in the reaction solution including an intermediate species apart from the initial and the product species. From MCR‐ALS analysis of the Cu K‐edge XANES spectra, the oxidation state of the reaction intermediate species and the concentration profile of the constituents during the reactions have been determined. Finally the EXAFS spectra of the intermediate species has been extracted and analyzed to predict the local structure of Cu cations in this species.
Highly Stable Battery Pack via Insulated, Reinforced, Buckling‐Enabled Interconnect Array
Authors: Yin Lu , Seo Joon Kyo , Kurniawan Jonas , Kumar Rajan , Lv Jian , Xie Lingye , Liu Xinyu , Xu Sheng , Meng Ying S. , Wang Joseph 
Published: July 2018

AbstractThis work describes a flexible and stretchable battery pack configuration that exhibits highly stable performance under large deformation up to 100% biaxial stretching. Using stress‐enduring printable inks and serpentine interconnects, the new screen‐printing route offers an attractive solution for converting rigid battery units into a flexible, stretchable energy storage device. Coin‐cell lithium ion batteries are thus assembled onto the island regions of a screen‐printed, buckling‐enabled, polymer‐reinforced interconnect “island‐bridge” array. Most of the strain on the new energy‐storage device is thus accommodated by the stress‐enduring serpentine structures, and the array is further reinforced by mechanically strong “backbone” layers. Battery pack arrays are assembled and tested under different deformation levels, demonstrating a highly stable performance (<2.5% change) under all test conditions. A light emitting diode band powered by the battery pack is tested on‐body, showing uninterrupted illumination regardless of any degrees of deformation. Moreover, battery‐powered devices that are ultrastable under large deformation can be easily fabricated by incorporating different electronics parts such as sensors or integrated circuits on the same platform. Such ability to apply traditionally rigid, bulky lithium ion batteries onto flexible and stretchable printed surfaces holds considerable promise for diverse wearable applications.
Hybrid PbS Quantum‐Dot‐in‐Perovskite for High‐Efficiency Perovskite Solar Cell
Authors: Han Jianhua , Luo Songping , Yin Xuewen , Zhou Yu , Nan Hui , Li Jianbao , Li Xin , Oron Dan , Shen Heping , Lin Hong 
Published: July 2018

AbstractIn this study, a facile and effective approach to synthesize high‐quality perovskite‐quantum dots (QDs) hybrid film is demonstrated, which dramatically improves the photovoltaic performance of a perovskite solar cell (PSC). Adding PbS QDs into CH3NH3PbI3 (MAPbI3) precursor to form a QD‐in‐perovskite structure is found to be beneficial for the crystallization of perovskite, revealed by enlarged grain size, reduced fragmentized grains, enhanced characteristic peak intensity, and large percentage of (220) plane in X‐ray diffraction patterns. The hybrid film also shows higher carrier mobility, as evidenced by Hall Effect measurement. By taking all these advantages, the PSC based on MAPbI3‐PbS hybrid film leads to an improvement in power conversion efficiency by 14% compared to that based on pure perovskite, primarily ascribed to higher current density and fill factor (FF). Ultimately, an efficiency reaching up to 18.6% and a FF of over ≈0.77 are achieved based on the PSC with hybrid film. Such a simple hybridizing technique opens up a promising method to improve the performance of PSCs, and has strong potential to be applied to prepare other hybrid composite materials.
Strongly Coupled g‐C3N4 Nanosheets‐Co3O4 Quantum Dots as 2D/0D Heterostructure Composite for Peroxymonosulfate Activation
Authors: Gao Huihui , Yang Hongcen , Xu Jinzhang , Zhang Shouwei , Li Jiaxing 
Published: July 2018

AbstractThe development of effective approaches for the preparation of 0D quantum dots (QDs)/2D nanosheets (NSs) heterostructures, which have been proven to be favorable for heterogeneous catalysis, is highly desirable but remains a great challenge. Herein, 0D metal oxide nanocrystals–2D ultrathin g‐C3N4 nanosheets (Co3O4/CNNS) heterostructures are synthesized via a facile chemical reaction, followed by annealing in air. Ultrafine Co3O4 QDs (≈2.2–3.2 nm) are uniformly and tightly attached on the surface of g‐C3N4 nanosheets. Detailed characterization reveals that the specially designed unique 0D/2D structure is critical to the high photocatalytic performance for the degradation of tetracycline (TC) via peroxymonosulfate (PMS) activation. The optimal catalyst, namely, Co3O4/CNNS‐1100, exhibits excellent performance and ≈98.7% TC can be degraded under visible light irradiation. Moreover, TC degradation is almost completely insusceptible to several real water samples. Meanwhile, other dye pollutants can also be efficiently degraded by the Co3O4/CNNS‐1100/PMS/vis system. The quenching tests display that that the h+, ∙OH, O2∙−, and SO4∙− are responsible for TC removal. The improved photocatalytic performance can be attributed to the synergistic effect of the photocatalytic‐ and chemical‐processes in the PMS activation. This work gives an insight into the development of multifunctional 0D/2D nanocomposites for further potential applications which are not limited to environmental purification.
Ag+‐Gated Surface Chemistry of Gold Nanoparticles and Colorimetric Detection of Acetylcholinesterase
Authors: Zhang Jiangjiang , Zheng Wenshu , Jiang Xingyu 
Published: July 2018

AbstractChemical regulation of enzyme‐mimic activity of nanomaterials is challenging because it requires a precise understanding of the surface chemistry and mechanism, and rationally designed applications. Herein, Ag+‐gated peroxidase activity is demonstrated by successfully modulating surface chemistry of cetyltrimethylammonium bromide‐capped gold nanoparticles (CTAB‐AuNPs). A surface blocking effect of long‐chain molecules on surfaces of AuNPs that inhibit peroxidase activity of AuNPs is found. Ag+ ions can selectively bind on the surfaces of AuNPs and competitively destroy CTAB membrane forming Ag+@CTAB‐AuNPs complexes to result in enhanced peroxidase activity. Ag+@CTAB‐AuNPs show the highest peroxidase activity compared to similar‐sized citrate‐capped and ascorbic acid‐capped AuNPs. Ag+@CTAB‐AuNPs can potentially develop into analyte‐responsive systems and exhibit advantages in the optical sensing field. For example, the Ag+@CTAB‐AuNPs system shows an enhanced sensitivity and selectivity for acetylcholinesterase activity sensing compared to other methods.