bluuebunny/crossref_metadata_2025_split huggingface dataset:
Learning the Language of Home: Using Place-based Writing Practice to Help Rural Students Connect to Their Communities
Authors: Donovan Erin 
Published: July 2019

The idea of "place" extends beyond the locations where people live. Place is a narrative which shapes identity and culture and provides an understanding of experience. By exploring place and the connections which evolve from place, an intriguing context begins to take a shape that inspires transformational ideas and actions. This article investigates how place-based writing practices affect rural middle school students’ connections with their home community as evidenced through their writing. This study follows the critical pedagogy of place theoretical framework and works to support best practices in rural education research. A qualitative case study design was used to conduct this study in a rural middle school in North Carolina.
El aporte del Perú a la vigésima segunda edición del Diccionario de la Real Academia de la Lengua Española
Authors: Portilla Durand Luisa 
Published: July 2019

Tras la presentación de la vigésima segunda edición del Diccionario de la RAE, en el 2001, las expresiones peruanas incluidas ascendieron a casi un centenar, respecto de ediciónes anteriores. A raíz de ello, la autora del presente texto ofrecerá una breve muestra de los peruanismos propuestos o enmendados por la Comisión Lexicográfica de la Academia Peruana de la Lengua. Gracias a la rigurosidad con que este aporte es mostrado, el lector podrá apreciar de un modo más preciso y enriquecedor dichos peruanismos.
Monseñor Severo Aparicio, O. M.
Authors: Benito Rodríguez José Antonio 
Published: July 2019

El entrevistador dialogará con Mons. Severo Aparicio, O. M., presidente de la Academia Peruana de Historia Eclesiástica. En las siguientes páginas, Mons. Aparicio hablará sobre su vida, su trayectoria en la investigación histórica, su familia, su vocación religiosa, la Señora de la Merced, la Orden de los Mercedarios, entre otros temas. Asimismo, tendrá palabras de reconocimiento para la comunidad universitaria de la UCSS y su Gran Canciller, Mons. Lino Panizza.
Horacio. Arte poética (Epístola a los Pisones)
Authors: Picasso Muñoz Julio 
Published: July 2019

Julio Picasso Muñoz, reconocido humanista, autor del Fondo Editorial UCSS y docente de la Universidad Católica Sedes Sapientiae, ofrece una notable traducción de uno de los escritos más famosos del latino Horacio. El texto se enriquece aún más con la labor del especialista al ofrecer una sintética presentación y valiosas notas. Cabe recordar que la presente es una traducción íntegra.
Peningkatan Pertumbuhan Ikan Nila (Oreochromis niloticus) Melalui Pemberian Immunostimulan Ragi Roti (Saccharomyces cereviciae)
Authors: Bugis Achmad A , Manoppo Henky 
Published: July 2019

This research aimed to examine the effect of baker’s yeast as immunostimulant on growth of nile tilapia and to find out a proper dose of baker’s yeast that promoted optimal growth of fish. Juveniles with an average weight of 31.83 g were obtained from stock available at Aquaculture Study Program of the Faculty of Fisheries and Marine Sciences. This research was conducted at the experimental ponds located at the Faculty of Fisheries and Marine Sciences for three months. During the experiment, fish was fed with pellet supplemented with baker’s yeast as treatment for four weeks as much as 4%/bw/day, twice daily. The doses of baker’s yeast consisted of 0, 10, 20, 30, and 40 g/kg pellet. Fish growth including absolute and relative growth was measured at two weeks interval. Research results showed that after two weeks of feeding, supplementation of baker’s yeast did not affect the growth of fish but after four weeks of feeding, supplementation of baker’s yeast significantly increased fish growth. Fish fed pellet supplemented with 10 g baker’s yeast displayed the highest growth. As conclusion, supplementation of baker’s yeast in fish food could enchance the growth of fish. Keywords: Oreochromis niloticus, immunostimulant, baker’s yeast, growth
Kelangsungan Hidup Larva Ikan Nila yang Berasal Dari Induk yang Diberi Pakan Berimunostimulan
Authors: Maleko Ayu , Sinjal Hengky J , Manoppo Henky 
Published: July 2019

The objective of this research was to evaluate the effect of feed supplemented with baker’s yeast on survival rate of nile tilapia larvae and to determine the effective dose of baker’s yeast that could optimally improve larval quality. The research was conducted at Pathology and Clinic of Fish Disease from June – September 2014. Fish as brood stock candidates was cultivated at five concrete tanks (2x1x1 m3) at a density of 30 fish per tank. Each tank was equipped with water inlet, outlet and water pump for recirculating and aerating. After seven days of adaptation, fish was fed pellet supplemented with baker’s yeast at five different doses (0, 10, 20, 30, 40 g/kg food) for four consecutive weeks at 4%/bb/day, twice daily. Larva was captured with seser and moved into five glass aquaria with density of 20 larvae/aquarium and reared for two weeks. Data collected was survival rate of larvae achieved until the end of larval rearing. Research result showed that larvae produced by brood stock fed food supplemented with 10 g baker’s yeast per kg food had the highest survival rate namely 60%. As conclusion, supplementation of baker’s yeast into brood stock feed might increase survival rate of larvae. Keywords: nile tilapia, baker’s yeast, larvae, survival rate
The Impact of Employee Happiness on Organizational Citizenship Behavior: A Study of Executive Level Employees in Selected Mobile Telecommunication Companies
Authors: Palihakkara N. , Weerakkody W. A. S. 
Published: July 2019

At present, employees are not only concern about the pay which they receive for their work but also, the work environments, relationship with the supervisors and coworkers, expecting self-respect and ownership of one’s own work. Thus, the employees expect from employers to accommodate them with long term, continuous happiness at work. Therefore, employers focus on maintaining sustainable workforce through promoting employee happiness, which ultimately leads to build high levels of organizational citizenship behaviour. The main purpose this study was to identify the impact of employee happiness on organizational citizenship behaviour with special reference to the executive level employees in selected leading mobile telecommunication companies. Standard questionnaire was used to collect the primary data from 153 executive level employees using simple random sampling technique. Research includes the dimensions of employee happiness according to the Fisher’s conceptualization of happiness and how each dimension links to create organizational citizenship behaviour in employees, which ultimately used to build a relationship between employee happiness and organizational citizenship behaviour. Further, study tested results obtained from frequencies, mean analysis and correlation analysis revealed that there is a positive strong relationship between the employee happiness and organizational citizenship behaviour. Thus, the research further analyzed the impact of the two variables and results depicted that there is a significant impact of employee happiness on organizational citizenship behaviour.
Remedying Foreign Language Anxiety through CLIL? A mixed-methods study with pupils, teachers and parents
Authors: Simons Mathea , Vanhees Claudio , Smits Tom , Van De Putte Karen 
Published: July 2019

<div data-canvas-width="30.450735457166097">Foreign Language Anxiety (FLA) is an important challenge for language learning. In Content and Language Integrated Learning (CLIL), subjects are taught in a language that is not the learners’ mother tongue; a context that could reduce FLA. This study analyzes whether CLIL can positively influence FLA and which characteristics determine its presence in a CLIL context. Data were collected from 225 pupils, their parents and teachers in Flemish-speaking Belgium. Quantitative and qualitative methods were applied, with pre- and post-measurement. Results indicate that CLIL can indeed positively influence FLA. Pupils experienced growth in their self-confidence to use the foreign language. Their teachers observed more active participation, especially from more silent and less proficient pupils. The parents also noticed an increase in communicative attitudes. We found eight variables to have an influence. The foreign language used in CLIL appeared to have the most important influence besides the pupils’ interest in language learning and their personality traits, extraversion and agreeableness</div><div> </div>
Nonsense‐mediated mRNA decay of the ferric and cupric reductase mRNAs FRE1 and FRE2 in Saccharomyces cerevisiae
Authors: Peccarelli Megan , Scott Taylor D. , Kebaara Bessie W. 
Published: July 2019

The nonsense‐mediated mRNA decay (NMD) pathway regulates mRNAs that aberrantly terminate translation. This includes aberrant mRNAs and functional natural mRNAs. Natural mRNA degradation by NMD is triggered by mRNA features and environmental cues. Saccharomyces cerevisiae encodes multiple proteins with ferric and cupric reductase activity. Here, we examined the regulation by NMD of two mRNAs, FRE1 and FRE2, encoding ferric and cupric reductases in S. cerevisiae. We found that FRE2 mRNAs are regulated by NMD under noninducing conditions and that the FRE2 3′‐UTR contributes to the degradation of the mRNAs by NMD. Conversely, FRE1 mRNAs are not regulated by NMD under comparable conditions. These findings suggest that regulation of functionally related mRNAs by NMD can be differential and conditional.
Sperm–Particle Interactions and Their Prospects for Charge Mapping
Authors: Magdanz Veronika , Gebauer Johannes , Sharan Priyanka , Eltoukhy Samar , Voigt Dagmar , Simmchen Juliane 
Published: July 2019

AbstractIn this article, a procedure to investigate sperm charge distribution by electrostatic sperm–particle interactions is demonstrated. Differently chargedparticles are fabricated and their attachment distribution on the bovine sperm membrane is investigated. The sperm‐particle attachment sites are observed using bright field and cryo‐scanning electron microscopy combined with energy‐dispersive X‐ray analysis. The findings suggest that the charge distribution of the sperm membrane is not uniform, and although the overall net charge of the sperm cell is negative, positively charged areas are especially found on the sperm heads. The newly developed method is used to investigate the dynamic charge distribution of the sperm cell membrane upon maturation induced by heparin, as a representation of the multitude of changes during the development of a sperm.
Thermoresponsive Semiconducting Polymer Nanoparticles for Contrast‐Enhanced Photoacoustic Imaging
Authors: Cui Dong , Li Pengcheng , Zhen Xu , Li Jingchao , Jiang Yuyan , Yu Aixi , Hu Xiang , Pu Kanyi 
Published: July 2019

AbstractPhotoacoustic (PA) agents with biomarker‐activated signals are developed to enhance the signal‐to‐background ratios (SBRs) for in vivo imaging; however, their SBRs still heavily rely on the concentration difference of biomarkers between diseased and normal tissues. By contrast, external stimuli can provide a remote way to noninvasively control the signal generation from the PA agents and in turn enhance SBR, which are less exploited. This study reports the development of thermoresponsive semiconducting polymer brush with poly(N,N‐dimethylacrylamide)‐r‐(hydroxypropyl acrylate) (PDMA‐r‐HPA) grafts for contrast‐enhanced in vivo imaging. Such a polymer is amphiphilic and can self‐assemble into the nanoparticle (termed as SPNph1) in an aqueous medium, and has lower critical solution temperatures (LCSTs) at 48 °C. Thus, SPNph1 not only has higher photothermal conversion efficiency than the control polymer without PDMA‐r‐HPA grafts, but also can undergo phase separation to form large nanoparticles, leading to enhanced PA signals above LCST. The thermoresponsive PA property of SPNph1 enables in situ remote manipulation of PA signals by photoirradiation to further enhance the tumor SBR. Thus, this study introduces a new generation of organic PA agents with thermoresponsive signal for high‐contrast in vivo imaging.
Reduced Efficiency Roll‐Off and Improved Stability of Mixed 2D/3D Perovskite Light Emitting Diodes by Balancing Charge Injection
Authors: Fakharuddin Azhar , Qiu Weiming , Croes Guillaume , Devižis Andrius , Gegevičius Rokas , Vakhnin Alexander , Rolin Cedric , Genoe Jan , Gehlhaar Robert , Kadashchuk Andrey , Gulbinas Vidmantas , Heremans Paul 
Published: July 2019

AbstractPerovskite light emitting diodes (PeLEDs) have reached external quantum efficiencies (EQEs) over 21%. Their EQE, however, drops at increasing current densities (J) and their lifetime is still limited to just a few hours. The mechanisms leading to EQE roll‐off and device instability require thorough investigation. Here, improvement in EQE, EQE roll‐off, and lifetime of PeLEDs is demonstrated by tuning the balance of electron/hole transport into a mixed 2D/3D perovskite emissive layer. The mixed 2D/3D perovskite layer induces exciton confinement and beneficially influences the electron/hole distribution inside the perovskite layer. By tuning the electron injection to match the hole injection in such active layer, a nearly flat EQE for J = 0.1–200 mA cm−2, a reduced EQE roll‐off until J = 250 mA cm−2, and a half‐lifetime of ≈47 h at J = 10 mA cm−2 is reached. A model is also proposed to explain these improvements that account for the spatial electron/hole distributions.
Waimānalo Pono Research Hui: A Community–Academic Partnership to Promote Native Hawaiian Wellness through Culturally Grounded and Community‐Driven Research and Programming
Authors: Chung‐Do Jane J. , Ho‐Lastimosa Ilima , Keaulana Samantha , Ho Kenneth , Hwang Phoebe W. , Radovich Theodore , Albinio Luana , Rogerson Ikaika , Keli‘iholokai LeShay , Deitschman Kirk , Spencer Michael S. 
Published: July 2019

AbstractAlthough Hawai‘i is often portrayed as an idyllic paradise and is recognized as one of the healthiest States in the United States, pervasive health disparities exist among Native Hawaiians. Similar to other indigenous populations across the globe, these disparities are linked to unjust social and economic policies rooted in colonization and historical trauma. Western‐centric efforts to address these disparities have yielded limited results. Consequently, indigenous frameworks to decolonize western‐centric research processes have emerged. The Waimānalo Pono Research Hui is an example of a community–academic partnership that uses indigenous methodologies and principles of community‐based participatory research as the foundation to engage Native Hawaiian community members in research. Monthly gatherings are held where community members and academic researchers share a meal and discuss community priorities with the goal of shaping research and programming that are rooted in Native Hawaiian values. A mission for the group has been created as well as protocols for community engagement to ensure all projects that work with the Waimānalo Pono Research Hui are ethically sound and grounded in the community's preferences, cultural knowledge, and lived experiences. Our community members continually report that the Waimānalo Pono Research Hui has positively transformed their perception of and willingness to engage in research. Similarly, university students and academic researchers express how much their knowledge about working with communities has grown and inspired them. Creating spaces for communities and researchers to build authentic relationships and engage in ongoing conversations can promote culturally grounded and community‐driven research and programming.
Oil Phytosterol Concentration in Sunflower Presents a Dilution Response with Oil Weight per Grain
Authors: González Belo Raúl , Velasco Leonardo , Nolasco Susana M. , Izquierdo Natalia G. 
Published: July 2019

AbstractPhytosterols are plant sterols that present several benefits for human health. In crop species, such as sunflower, oil phytosterol concentration shows genetic and environmental variations. The reasons that cause such varied concentration of phytosterols in the oil are unknown. The aim of this work was to investigate the relationships between phytosterol concentration and composition and grain oil content in sunflower. Two sets of samples, with lines and hybrids grown in different environments in Argentina and Spain, were used to establish and validate the relationships between phytosterols and grain oil content. Oil phytosterol concentration decreased in both types of genotypes, lines, and hybrids, when oil content per grain increased. A dilution‐like relationship accounted for 82% of the variability in phytosterol concentration among genotypes and environments. Phytosterol concentration rapidly increased with oil contents lower than 11.4 mg per grain. This relationship was observed for total phytosterols and each type of the phytosterols analyzed. With low oil per grain, phytosterol composition varied, with higher proportions of β‐sitosterol and Δ7‐stigmastenol. The relationships established in this work could serve to design breeding and crop management strategies.
How valid are 11‐plus tests? Evidence from Kent
Authors: Brown Anna , Fong Sarah 
Published: July 2019

Despite profound influence of selection‐by‐ability on children's educational opportunities, empirical evidence for the validity of 11‐plus tests is scarce. This study focused on secondary selection in Kent, the largest grammar school area in England. We analysed scores from the ‘Kent Test’ (the 11‐plus test used in Kent), Cognitive Assessment Tests (CAT4) and Key Stage 2 Standardised Assessment Tests (KS2) using longitudinal data of two year cohorts (N1 = 95, N2 = 99) from one primary school. All the assessment batteries provided highly overlapping information, with the decisive effect of content area (e.g. verbal vs maths) over task type (e.g. knowledge‐loaded vs knowledge‐free). Thus, the value in differentiating ‘pure’ (i.e. knowledge‐free) ability in 11‐plus testing is questionable. KS2 and Kent Test aggregated scores overlapped very strongly, sharing nearly 80% of variance; moreover, KS2‐based eligibility decisions had higher sensitivity than the Kent Test in predicting the actual admissions to grammar schools after Head Teacher Assessment (HTA) appeals have taken place. Finally, the use of multiple pass marks for each Kent Test component, as well as the total score, was found to increase the chance of false rejection. This study provides preliminary evidence that national examinations could be a good basis for selection to grammar schools; it challenges the use of complex admission rules and multiple decisions, and questions the value of 11‐plus tests.
Antimetastatic effects of calycosin on osteosarcoma and the underlying mechanism
Authors: Qiu Rubiao , Li Xueyu , Qin Kaibing , Chen Xiong , Wang Ruyue , Dai Yan , Deng Li , Ye Yu 
Published: July 2019

AbstractOsteosarcoma (OS) refers to a malignant tumor with potential invasiveness and metastasis; however, the current chemotherapy of OS is lacking. Thus, the alternative drug for treating OS is urgent to explore. Calycosin (CC) is evidenced in our previous study to play the anti‐OS benefits for suppressing cancer cell proliferation. Consequently, further investigation of CC‐medicated anti‐invasive and metastatic effects against OS is needed. In the current study, the clinical samples of OS patients were collected for biological and staining assays, such as enzyme‐linked immunosorbent assay and polymerase chain reaction. Meanwhile, the cell line and tumor‐bearing nude mice were employed in assessing antimetastatic effects of CC against OS through biochemical tests and immunoassays. As a result, the OS patients exhibited upregulated neoplastic expressions of matrix metalloproteinase 2 (MMP2) and proliferating cell nuclear antigen (PCNA), cellular mRNAs and proteins of inhibitor of nuclear factor kappa‐B alpha (IκBα), and epithelial cell transforming sequence 2 (ECT2). In cell‐line study, CC‐treated human OS cells exhibited induced cell apoptosis, reduced cell proliferation, and cellular MMP2 and PCNA concentration, inhibited cell migration, lowered expressions of IκBα ECT2 mRNAs, and proteins. In tumor‐bearing nude mice study, CC‐treated mice resulted in the dose‐dependent reductions of tumor weights and intracellular MMP2 contents. As shown in further assays, neoplastic expressions of interleukin 6 protein, IκBα, ECT2 mRNAs, and proteins were downregulated dose‐dependently in CC‐treated tumor‐bearing mice. In conclusion, these investigative findings suggest that CC may play the potential anti‐invasive benefits against OS through suppressing metastasis‐associated IκBα/ECT2 molecular pathway.
Mechanism and Control of the Palladium‐Catalyzed Alkoxycarbonylation of Oleochemicals from Sustainable Sources
Authors: Jameel Froze , Kohls Emilija , Stein Matthias 
Published: July 2019

AbstractThe transformation of chemical production processes to a sustainable feedstock from renewable sources requires a careful assessment of current thermodynamic data, reaction mechanisms and kinetics. The Pd‐catalyzed alkoxycarbonylation of the long chain olefin methyl 10‐undecenoate (10‐UME) from castor oil with methanol yields the building blocks for a renewable polyamide. The mechanism for the complex multi‐step reaction cycle including active catalyst formation was elucidated. The experimental catalyst selectivity with 1,2‐bis(di‐tert‐butylphosphino‐methyl)benzene (1,2‐DTBPMB) as a ligand towards the desired linear diester product can be reproduced and rationalized. The mechanisms of possible side reactions and well as catalyst inhibition by carbon monoxide were also investigated. Solvent effects have an influence on reaction equilibria and transition barriers. These were considered in polar (methanol) and nonpolar (dodecane) media using implicit or mixed cluster/continuum solvation models when explicit solvent coordination was critical.
Discovery of New Thioviridamide‐Like Compounds with Antitumor Activities
Authors: Li Yuqing , Liu Jingyu , Tang Haoyu , Qiu Yanping , Chen Dandan , Liu Wen 
Published: July 2019

Summary of main observation and conclusionThioviridamide is a structurally unique compound with potent antitumor activity. The biosynthesis of thioviridamide follows a typical pathway as ribosomally synthesized and post‐translationally modified peptides, making the genome mining‐based discovery of thioviridamide‐like compounds rational. Taking advantage of the linkage between the precursor peptide and the metabolite skeleton, we identified a new biosynthetic gene cluster in Streptomyces sp. NRRL S‐87 that could encode thioviridamide analogues. Overexpression of the whole gene cluster led to the isolation and structure elucidation of TVA‐YJ‐4 and TVA‐YJ‐5, two novel thioviridamide‐like compounds featuring N‐terminal capping groups. Chemical screening of the fermentation extracts also detected TVA‐YJ‐6, another new thioviridamide‐like compound with representative methionine sulfoxide. Detailed analysis further revealed that these structural modifications were introduced during the compound extraction process instead of through genuine enzymatic reactions. TVA‐YJ‐4 and TVA‐YJ‐5 display slightly reduced cytotoxic activities against a panel of tumor cell lines in comparison with their parental natural product, TVA‐YJ‐2. Our work will expand the membership of this rare class of compounds and promote related biosynthetic studies.