Miracle-dz/UniFAR-FTUs huggingface dataset:
EVALUATION OF PROTECTIVE POTENTIAL OF CITRUS AURANTIFOLIA (CHRISTM) SWINGLE PEEL EXTRACT IN ATTENUATING DOXORUBICIN-INDUCED HEPATOTOXICITY IN EXPERIMENTAL MODELS

Citrus aurantifolia is a very common, and widely cultivated and consumed for its antioxidant properties due to its robust flavonoids content. Doxorubicin (DOX) is an antibiotic broadly used in the treatment of different types of solid tumours, but its use also comes at a cost, organ toxicity. The curative and preventive properties of Citrus aurantifolia peel extract (CAPE) in doxorubicininduced hepatotoxicity in Wistar rats were evaluated. Thirty female rats were divided into six groups of five (5) rats each in both curative and preventive studies. In curative study, five groups of rats (II – VI) received Doxorubicin (mixed with normal saline, 15 mg/kg body weight i.p) on day one, 24 hours after, graded doses of CAPE and alpha-lipoic acid (A.L.A.) were administered to groups II- V and VI respectively for 7 consecutive days. For the prophylactic study, groups II – V and VI received graded doses of CAPE and A.L. A. respectively, 24 hours after Doxorubicin was administered to groups II-VI. Groups treated with D.W. and A.L. A. were used as a negative and positive control, respectively Liver enzymes such as A.S. T. , A.L. T. and A.L. P., including liver samples, were examined for histopathological changes. A significant reduction (p< 0.05) in serum A.S. T. and A.L. T. levels was observed in animals treated with CAPE 200 and 400mg/kg in the preventive study, while in curative, a significant reduction in an expected rise in serum A.S. T. , A.L. T. and A.L. P. (p<0.05) was observed in animals treated with CAPE 400mg/kg when compared to the group treated with DOX + distilled water. Hepatocellular necrosis was observed in the histology of DOX- distilled water treated group. Besides, the hepatocytes of groups treated with CAPE (200 and 400mg/kg) in this study showed narrow foci of mild vacuolar change as compared with groups treated with the lowest dose of CAPE (100mg.kg) and distilled water, which revealed random foci of mild vacuolar change. This study has provided information that DOX damaged liver tissue due to an increase in liver enzymes and histopathological results showing tissue damaged in groups treated with lower doses of CAPE and distilled water. This study further demonstrates that groups treated with CAPE 200, 400 mg/kg and A.L. A. protect hepatic damage induced by DOX.
Infrared characterization of water uptake by low‐temperature Na‐montmorillonite: Implications for Earth and Mars

[1] A large fraction of atmospheric mineral aerosol is composed of clays, such as smectites. Smectites are known to expand upon addition of water, and thus their properties in the atmosphere may vary strongly with relative humidity (RH). Here we report on the adsorption of water to Na-montmorillonite, a smectite clay. We probe the water uptake under conditions representative of the Earth's troposphere, as well as those relevant for the surface of Mars, of which montmorillonite is a proposed component. Using a vacuum chamber equipped with transmission Fourier transform infrared spectroscopy, we find that Na-montmorillonite contains 10% water by mass at temperatures from 212 K to 231 K at 50% RH. Surprisingly, the water uptake by Na-montmorillonite is almost as great as that of deliquesced ammonium sulfate. We also find that although water adsorption to Na-montmorillonite depends strongly on RH, there is not a strong dependence on absolute temperature. In addition, we find the time required for the clay to become saturated with water decreases with increasing water vapor pressure and is much shorter than suggested in previous studies. We discuss the implications of these results for the Earth's troposphere and the potential role of montmorillonite in the Martian hydrologic cycle.
Avaliação das áreas com fragilidade ambiental na Bacia Hidrográfica do Ribeirão do Descaroçador, Pirassununga-SP

The study of environmental fragility assists in decision making and territorial planning, since it analyzes local characteristics and potential jointly. Thus, this work aimed to analyze the environmental fragility in the Ribeirão do Descaroçador Watershed in the Pirassununga SP municipality. For this, Geographic Information Systems (GIS) were used to map the slope, pedology, geology, and land use and coverage, and based on these data, the index was applied. The results showed that the region has good physical and environmental characteristics, however, with a predominance of agricultural activities, with a time trend of potentiation and growth of environmental fragility, changing its landscape and natural characteristics. With that, it can be determined that 43.72% of areas have a low degree of fragility and 39.11% with a medium degree. The Agricultural activities in the region tend to gradually increase the degree of environmental fragility, due to their characteristics of soil removal, consequent loss of local biodiversity, changes in the landscape and soil, that is, directly interfering in the conservation and maintenance of ecosystem services.
Quantum control of electron-proton symmetry breaking in dissociative ionization of H2 by intense laser pulses

Forward and backward electron/proton ionization/dissociation spectra from one-dimensional non-Born-Oppenheimer H2 molecule exposed to ultrashort intense laser pulses ( W/cm2, λ = 800 nm) have been computed by numerically solving the time-dependent Schrodinger equation. The resulting above-threshold ionization and above-threshold dissociation spectra exhibit the characteristic forward-backward asymmetry and sensitivity to the carrier-envelope phase (CEP), particularly for high energies. A general framework for understanding CEP effects in the asymmetry of dissociative ionization of H2 has been established. It is found that the symmetry breaking of electron-proton distribution with π periodic modulation occurs for all CEPs except for ( integer) and the largest asymmetry coming from the CEP of . At least one of the electron and proton distributions is asymmetric when measured simultaneously. Inspection of the nuclear and electron wave packet dynamics provides further information about the relative contribution of the gerade and ungerade states of to the dissociation channel and the time delay of electrons in asymmetric ionization. © 2014 Wiley Periodicals, Inc.
Performance evaluation and yield stability of upland rice (Oryza sativa L.) varieties in Ethiopia

Abstract Multi-environment evaluation of genotypes is important to identify the response of genotypes across environments and helps to know which genotypes would be appropriate in which production areas. Thirteen upland rice genotypes were evaluated in a randomized complete block design at Tepi, Assosa, Bako, and Bonga research centers in 2017, 2018, and 2019 cropping season with the objective of examining the agronomic performance and evaluating the yield stability of the varieties. The combined analysis of variance for yield and other agronomic characteristics revealed that main effects, genotypes, locations, years, and the three-way (G X L X Y) interaction effects revealed a significant difference for the measured traits. Moreover, AMMI analysis of variance also showed a highly significant difference for genotypes, environment, and genotype x environment (GE) interaction for grain yield. Environment effect (61.64%) was responsible for the greatest part of the variation, followed by genotype by environment interaction (20.86%) and genotype (6.97%) effects. The AMMI analysis explained 69.17% of the GxE variance, while GGE captured 72.76% of the GGE variance. Based on the GGE, AMMI analysis genotype variety Hidassie (G4), 4238.7 Kg ha−1 followed by NERICA-4 (G3), 4183.5 Kg ha−1 were the most stable and high yielding genotypes and recommended for production for the testing sites and similar upland rice-producing areas of Ethiopia.
Data Acquisition in the Chemistry Laboratory Using LabVIEW Software

Our application of LabVIEW(R) software for computer data-acquisition using several techniques used across our curriculum is described. The techniques are gas chromatography, calorimetry, titrations and other volume-dependent techniques, spectrometry for kinetics using a Spectronic 20(R), and emission spectroscopy. Applications of these techniques range from general chemistry to physical chemistry, instrumental analysis, and undergraduate research. The hardware in common for all of the techniquesis a 4-1/2 digit multimeter connected to the computer via a GPIB interface to a Macintosh computer. Figures include examples of a LabVIEW "virtual instrument" (VI) diagram, some student-generated data, and a LabVIEW VI front panel.
Statistical modeling of computer malware propagation dynamics in cyberspace

ABSTRACT Modeling cyber threats, such as the computer malicious software (malware) propagation dynamics in cyberspace, is an important research problem because models can deepen our understanding of dynamical cyber threats. In this paper, we study the statistical modeling of the macro-level evolution of dynamical cyber attacks. Specifically, we propose a Bayesian structural time series approach for modeling the computer malware propagation dynamics in cyberspace. Our model not only possesses the parsimony property (i.e. using few model parameters) but also can provide the predictive distribution of the dynamics by accommodating uncertainty. Our simulation study shows that the proposed model can fit and predict the computer malware propagation dynamics accurately, without requiring to know the information about the underlying attack-defense interaction mechanism and the underlying network topology. We use the model to study the propagation of two particular kinds of computer malware, namely the Conficker and Code Red worms, and show that our model has very satisfactory fitting and prediction accuracies.
Hydrogen loading system development and evaluation of tritiated substrates to optimize performance in tritium based betavoltaics

Adams, Thomas E. Ph.D., Purdue University, December 2014. Hydrogen Loading System Development and Evaluation of Tritiated Substrates to Optimize Performance in Tritium Based Betavoltaics. Major Professor: Shripad Revankar. State-of-the-art hydrogen loading system for thin metallic films has been developed for maximum operational pressures and temperatures up to 69 bar and 500°C, respectively. Hydrogen loading experiments on aged palladium films of thickness 50 and 250 nm were conducted at pressure ranging from 0.2 bar to 10 bar. An optimal loading temperature of 310°C was found to be adequate for hydrogen loading on these aged films. For first time hydrogen loading on fresh titanium films was carried out at 1 bar and at room temperature. Emission from metal tritide films has been modeled with MCSET (Monte Carlo Simulation of Electron Trajectories in solids) to investigating surface beta flux. Improvements were made in the model to include film density changes due to tritium loading and effects of beta decay. Simulation results indicated that a 300 nm slab of MgT2 has surface flux three times higher than that for ScT2, and six times higher than that for TiT2. Commercial betavoltaic cells were tested at different temperature conditions to characterize and assess their performance.
Transition to adulthood of refugee and immigrant children in Canada

Abstract The majority of refugees are children and youth and their integration and life-course transitions are a research priority. This paper examines the timing of refugee children and youths’ entrance into the labour market and family formation (marriage/common law union and parenthood). It does so by examining how admission category, knowledge of a host country’s official languages, and age at arrival shape their transition to adulthood. Using data from the Canadian Longitudinal Immigration Database and Heckman selection estimation, the paper finds minimal variation in refugee children and youths’ entry into the labour market compared to children of other immigrant streams. It also finds that refugee children and youth start forming families at a younger age than children of economic class immigrants, but at an older age than family class children. The analysis also shows limited effects of knowledge of official language prior to arrival while age at arrival has a robust impact on their adulthood transitions. These findings shed light on the unique patterns of life-course transition among refugee children and youth and contribute to a better conceptualization of their experiences relative to children and youth of other immigrants.
Elevada proporción de Staphylococcus aureus meticilino resistentes aislados en pacientes atendidos en un servicio ambulatorio dermatológico de referencia nacional: cohorte 2010 a 2019

Objetivo: Estimar la resistencia del Staphylococcus aureus frente a diferentes antibioticos usados para el manejo ambulatorio de piodermias. Metodos: Se realizaron analisis descriptivos y de tendencias mediante modelos de regresion segmentada. Resultados: La mayor resistencia se presento a la oxacilina, con mediana de 54,3% (RIQ: 43 - 58,8), seguido de eritromicina con el 20%, (RIQ: 15,4 - 26,5), clindamicina con el 14% (RIQ: 7,9 - 20), gentamicina con el 7,5% (RIQ: 0 -10), trimetoprima/sulfametoxazol (SXT) con el 5,5% (RIQ: 4 - 11), y ciprofloxacina con 2,1% (RIQ: 2 – 8.4). La tendencia de la resistencia del S. aureus a la oxacilina fue creciente con un cambio anual porcentual no significativo de (0,07) (IC 95%: -3,7; 3,9). Para eritromicina, clindamicina, ciprofloxacina, trimetoprima/sulfametoxazol, y gentamicina hubo decrecimiento. Conclusiones: La resistencia del S. aureus a oxacilina fue ligeramente creciente para el periodo 2010 al 2019 y francamente creciente en los ultimos 3 anos, superando en promedio a lo reportado a nivel pais y Latinoamerica. Los antibioticos con menor resistencia fueron ciprofloxacina, SXT, clindamicina para uso sistemico, y acido fusidico, mupirocina para manejo topico y descolonizacion. Es pertinente articular la vigilancia del S. aureus en la atencion ambulatoria a la red de vigilancia nacional.
Effects of Organizational Structure on Employee Resilience

The uncertainties triggered by external environment require that there is no one best way of designing the structure of the organisation rather it is dependent on the circumstance and resilience capacity to withstand the threats. The purpose of this study therefore is to investigate the effects of organisational structure on employee resilience in manufacturing companies in Nigeria using cross-sectional survey. Ten manufacturing companies were selected using simple random sampling. 132 validated questionnaires were distributed to the participants. It was found that organisational structure has positive significant effect on employee resilience. The study concludes that organisational structure measured in terms of centralization, formalization and complexity enhances the resilience consciousness of employees in the organisation. The implication of this study is that managers of manufacturing companies as well as policy makers should employed organisational structure that will accommodate uncertainties, threats and other changes from the external business environment by ensuring that their resilient capacity is very strong to withstand such disruptions.
Carbon incorporation in plumbogummite-group minerals

Abstract Non-stoichiometric, carbon-containing crandallite from Guatemala and plumbogummite from Cumbria have been characterized using electron microprobe (EMPA) and wet-chemical analyses, Rietveld analysis of powder X-ray diffraction (PXRD) patterns, and infrared (IR), Raman and cathodoluminescence (CL) spectroscopies. The samples contain 11.0 and 4.8 wt. % CO2, respectively. The IR spectra for both samples show a doublet in the range 1410-1470 cm-1, corresponding to CO3 vibrations. Direct confirmation of CO3 replacing PO4 was obtained from difference Fourier maps in the Rietveld analysis. Carbonate accounts for 67% of the C in the plumbogummite and 20% of the C in the Guatemalan crandallite, the remainder being present as nano-scale organic carbon. The CO3 substitution for PO4 is manifested in a large contraction of the tetrahedral volume (14-19%) and by a contraction of the a axis, analogous to observations for carbonate-containing fluorapatites. Stoichiometric crandallite from Utah was characterized using the same methods, for comparison with the non-stoichiometric, carbon-bearing phases.
Validation processes of H-BIM models: a case study

BIM is becoming one of the main methodology in the field of the cultural heritage, to create digital models, aiming to take place of the real historic buildings for investigation, analysis and simulations. However it is still an open problem the validation of H-BIM models, to ensure reliability of the archived information. In fact there are two main aspects to achieving an H-BIM model: the first relates to the process of converting geometric data captured from survey into parametric elements and their semantic modelling; the second one relates to the definition of BIM use that will heavily influence the same modelling stage. The paper deals with a methodology of survey data modelling and model validation, highlighting the need to create a database, containing geometric data and information, in order to ensure reliability and usability over time. It is presented the case study of “Morgana Fairy” fount, built by Bernardo Vecchietti in 1573 and adorned with Gianbologna’s sculptures at Bagno a Ripoli in Florence. The model has been validated by a geometric comparing analysis of the deviation between the model itself and the mesh obtained with the acquired point cloud data.
Visual Context and Relevance in Life Cycle Diagrams

Graphics, graphs, diagrams, and visual representations of information play an integral role in science education and communication settings. The production of such graphics involves hundreds of design decisions, from content and layout to colour and illustration style, and any of these decisions has the potential to influence viewer’s experience and interpretation. While many studies have examined the influence of design on information transfer, comprehension, recall and so on, less attention has been given to affective impacts. In this study, we examined the impact of visual context in a biology life cycle diagram on viewers’ perception of relevance, sense of concern, and others. Results indicated that the presence of a contextual background in the diagram was associated with higher perception of relevance (related to personal experience). Context may also correlate with greater concern, though further research is needed to confirm this.
The interplay between country-of-origin image and perceived brand localness: An examination of local consumers’ response to brand acquisitions by emerging market firms

ABSTRACT While there is an increasing number of local brand acquisitions by firms originating from emerging markets, there have been limited studies on consumers’ responses to their acquisition strategies. In addition, little is known about whether and how the country of origin (CoO) effect interacts with perceived brand localness (i.e., the acquired local brand is recognized as a local image) in influencing the perceived brand value of acquired local brands. This study fills these gaps in the literature and provides insights on how firms from emerging markets should promote their acquisition strategies to customers. Using an experimental research design, this study aims to explore whether and how the country of origin of emerging-market firms affect consumers’ responses to their acquisitions of brands overseas. This study reveals that the negative effect of an acquirer’s less favorable CoO becomes stronger when the perceived brand localness of the acquired brand is high. On the other hand, there is no significant evidence of the CoO effects on the acquired local brand with low perceived localness. This study demonstrates important insights on the country of origin effect and its interaction with perceived brand localness in determining how consumers respond to emerging firms’ acquisitions of local brands.
Análise de maturidade da gestão do conhecimento em uma tutoria de cursos de graduação a distância

The general objective of this article was to make a diagnosis of the degree of maturity in Knowledge Management - (GC) in the tutoring of distance courses of graduation at the Department of Administration Sciences at UFSC. This work is the result of a case study with a quantitative approach, characterized as a descriptive, documentary and applied research, based on a theoretical and conceptual structure relevant to the theme. To identify maturity in CG, seven criteria were adopted based on Batista’s model (2012). The analysis of the answers showed that most of the criteria have a low level of maturity in GC, with the exception of the technology criterion. The results of the quantitative research show a diagnosis on the maturity in Knowledge Management, pointing out the strengths and opportunities for improvement, providing guidance on the actions and initiatives for the development of a future KM Model for Mentoring.
Site-selected synthesis of novel Ag@AgCl nanoframes with efficient visible light induced photocatalytic activity

A novel and facile synthetic route toward Ag@AgCl nanoframe photocatalysts is developed. The AgCl nanoframes were initially prepared via a site-selected growth process. After light irradiation, the Ag@AgCl composite nanoframes with uniform distribution of Ag nanoparticles on the surface were successfully synthesized. The physical and photophysical properties of the Ag@AgCl composite photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflection spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), electron spin resonance (ESR) and photoluminescence spectroscopy (PL). The Ag@AgCl nanoframes showed superior photocatalytic activity and photo-generated charge carrier separation efficiency under visible light irradiation, when compared with pure AgCl and Ag@AgCl cubic structures. Furthermore, the Ag@AgCl nanoframes can maintain photocatalytic activity after 5 cycles. A possible mechanism for Ag@AgCl nanoframe structures is proposed. The enhanced photocatalytic activity of Ag@AgCl nanoframe structures can be attributed to the surface plasmon resonance (SPR) effect from Ag and the hybrid effect from AgCl.
Structural, electronic, and optical properties of quaternary alloys Al0.50Ga0.50NxSb1-x : a first-principles study

In this study, we have employed the first-principle methods based on density functional theory to investigate the structural, electronic and optical properties of Al0.50Ga0. 50NxSb1-x in zincblende structure. The exchange and correlation potential is described by the generalized gradient approximation of Perdew, Burke and Ernzerhof (GGA-PBEsol) coupled with TB-mBJ approaches. The studied structures shows that all structures are semiconductors and have a direct bandgap except Al0.50Ga0. 50N0.25Sb0. 75 which has a semi-metallic behavior. The optical properties such as refractive index, extinction coefficient and optical conductivity are discussed in detail. Our result shows these materials are considered as promising materials for optoelectronic applications in the visible and infrared region. To our knowledge this is the first time that a study has been done on this alloy and we would like it to serve as a reference for the next studies.