bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efecto de la adición de cáscara y semilla deshidratada en la capacidad antioxidante de una pasta de tomate producida en Sinaloa
Authors: Ponce Fernández Nora Estela , Pollorena López Gregorio , Rosas Domínguez Cindy , Osuna Izaguirre Sandra Carmina , López Peñuelas Vida Mariel 
Published: May 2021

Estudios demostraron que la eliminación de cáscara y semilla del tomate afectaron la capacidad antioxidante. El objetivo: evaluar el efecto de la adición de semilla y cáscara deshidratada en capacidad antioxidante de pasta de tomate producida en Sinaloa. Se utilizaron tomates saladette (Solanum lycopersicum L.), para Pasta control (PC), adicionada con 1% (P1), 1.5% (P1.5) y 3% (P3) de cáscara y semilla deshidratada. El tomate se desinfectó, escaldó, despulpó y evaporó, el subproducto se secó (70°C/6 h) (SCS) para agregarse a P1, P1.5 y P3. Se evaluó capacidad antioxidante en tiempo 0 semana 24 de almacenamiento mediante determinación de fenoles totales, DPPH, TEAC y ORAC. El diseño experimental fue ANOVA de una vía y las diferencias entre promedios se evaluaron mediante Tukey (p≤0.05). El contenido de fenoles totales fue mayor en SCS (58.92±1.29a) a los demás tratamientos (p≤0.05), que aumentaron al adicionar semilla y cáscara. La inhibición de DPPH mayor fue en SCS, seguido de P3(67.207±0.52b), con relación directa entre la adición del subproducto y la capacidad antioxidante en P1 y P1.5 (p>0.05). Fenoles totales, DPPH, TEAC y ORAC disminuyeron respecto al tiempo. La adición de cáscara y semilla deshidratada modifica la capacidad antioxidante que se deteriora con el tiempo.
Palabras clave: Pasta de tomate, capacidad antioxidante, cascara y semilla de tomate
PNEUMONIA ADQUIRIDA NA COMUNIDADE POR ENTEROCOCCUS: UM RELATO DE CASO
Authors: Cardoso Luís Gabriel de Paula , De Paula Ricardo Mendonça , Alves Garcia Junior Divino , Foganholo Annalu , Silva Amaral Andrea 
Published: May 2021

O relato conta o caso de um paciente previamente hígido que se apresentou com uma pneumonia por enterecoccus. Devido a raridade do caso, é pertinente a discussão da importância de se investigar de maneira ampla outros agentes, com intuito de evitar evoluções graves, instituindo o tratamento adequado o quanto antes.
Palavras-chave: Pneumonia; Enterococcus; Infecção.
The report tells a case of a previously higid patient who presented with a enterococcal pneumonia. Due to the rarity of the case, we discussed the importance to investigate with a broad way another agent, with the intent to avoid serious evolutions, instituting the proper treatment as soon as possible.
Keywords: Pneumonia; Enterococcus; Infection.
Second-Generation Highly Cross-Linked Polyethylene in Total Hip Arthroplasty
Authors: Parekh Amit , Sood Anshum , Monsef Jad Bou , Hamouda Mohammed , Hussain Awais , Gonzalez Mark 
Published: May 2021

» Bearing materials that are used in total hip arthroplasty have undergone major developments in structure and durability since the 1960s.» Osteolysis and aseptic loosening associated with ultra-high molecular weight polyethylene had been a major concern; this led to the development of the first generation of highly cross-linked polyethylene (HXLPE), which was followed by a second generation of HXLPE.» The second generation of HXLPE was introduced with the aim of providing oxidative stability while maintaining high wear resistance.» Oxidative stabilization methods include mechanical deformation and annealing, incorporation of antioxidant-containing materials, high-pressure crystallization after melting, and polyethylene surface-grafting with a biocompatible polymer.» Results of clinical studies with ≤5 years of follow-up have shown that second-generation HXLPE acetabular liners are superior to any of the previous generation with regard to wear rates; however, additional studies are needed to compare second-generation materials among each other.
Numerical Simulation of Nonequilibrium Foamy Oil for Cyclic Solvent Injection in Reservoirs after Cold Heavy Oil Production with Sand
Authors: Chen Tong , Leung Juliana Y. 
Published: May 2021

SummaryNonequilibrium foamy oil behavior and solvent transport are two important recovery mechanisms for cyclic solvent injection (CSI) processes in post-cold heavy oil production with sand (CHOPS) reservoirs. The nonequilibrium solvent exsolution and gas bubbles generated during the pressure depletion stage have the typical characteristics of foamy oil flow. In this paper, a field-scale post-CHOPS model is constructed and upscaled from a core model, which was calibrated against detailed experimental data involving various propane (C3H8)-based and carbon dioxide (CO2)-based solvent mixtures. The field model is upscaled from the core model to analyze the impacts of simulation scales, heterogeneous wormholes, and the operating schedules on foamy oil behavior of different solvent systems.Reaction kinetics are implemented to represent the nonequilibrium gas dissolution and exsolution for foamy oil flow. A fractal wormhole network is modeled. To analyze the impacts of pressure depletion strategies, single-stage pressure depletion involving three oil solvent systems, as well as two cycles of CSI production processes, are examined. Detailed sensitivity analyses involving different solvent compositions are discussed.The results illustrate that both C3H8-based and CO2-based solvents exhibit significant nonequilibrium foamy oil characteristics, enabling the oil viscosity to remain close to its value with dissolved solvent during the pressure depletion process. However, the amount of nonequilibrium foamy oil flow is strongly dependent on the pressure depletion rate: A faster depletion rate is beneficial for higher oil recovery. The core model results are more sensitive to the solvent types, whereas the field-scale simulations show comparable recovery performance for both C3H8-based and CO2-based solvents. This observation highlights the significance of domain size, time scale, and wormhole heterogeneities on the ensuing foamy oil behavior.Although several post-CHOPS models were developed in the past, detailed field-scale models that simulate nonequilibrium foamy oil kinetics in a realistic wormhole network are lacking. The simulation model developed here has been calibrated against detailed experimental measurements and upscaled from a core-scale model. Improving our understanding of solvent dissolution/exsolution would aid in the design of operating strategies (e.g., pressure depletion and solvent injection schemes) for enhanced solvent/oil mixing and transport.
Glycolytically impaired glial cells fuel neural metabolism via β-oxidation
Authors: Schirmeier Stefanie , Hertenstein Helen , McMullen Ellen , Deharde Leon , Brankatschk Marko 
Published: May 2021

Abstract
Neuronal function is highly energy demanding and thus requires efficient and constant metabolite delivery. Like their mammalian counterparts Drosophila glia are highly glycolytic and provide lactate to fuel neuronal metabolism. However, flies are able to survive for several weeks in the absence of glial glycolysis1. Here, we study how glial cells maintain sufficient nutrient supply to neurons under conditions of carbohydrate restriction. We show that glycolytically impaired glia switch to fatty acid breakdown via β-oxidation and provide ketone bodies as an alternate neuronal fuel. Moreover, flies also rely on glial β-oxidation under starvation conditions with glial loss of β-oxidation increasing susceptibility to starvation. Further, we show that glial cells act as a metabolic sensor in the brain and can induce mobilization of peripheral energy stores to ensure brain metabolic homeostasis. In summary, our study gives pioneering evidence on the importance of glial β-oxidation and ketogenesis for brain function, and survival, under adverse conditions, like malnutrition. The glial capacity to utilize lipids as an energy source seems to be conserved from flies to humans.
Sleep states detection using halfwave and Franklin transformation
Authors: Paul Yash , Fridli S. 
Published: May 2021

Abstract
Sleep is a physiological phenomenon and a sufficient amount of sleep is mandatory for a human for his/her health. The aim of the paper is to develop an efficient algorithm to detect the various sleep states by combining different biomedical signals. The novelty of the algorithm is that we used two piecewise linear data reduction techniques namely a new Halfwave method in time domain and Franklin transformation in frequency domain. The obtained two piecewise linear forms of signals have low complexity that still preserve the characteristics of the stages of the sleep in the signals. The components of the feature vector are generated from the parameters of the two reduced piece wise linear functions. Algorithm is tested on MIT-BIH Polysomnographic Database having more than 70 hours long term EEG, blood and nasal signals with six different sleep classes. Proposed method shows better performance in terms of average Sensitivity, Specificity, Accuracy and False Alarm Rate/hour than state of the art methods.
Multiple Accurate-Cubic Optical Solitons to the Kerr-Low and Power-low Nonlinear Schrodinger Equation without the Chromatic Dispersion
Authors: Zahran Emad H.M. , Bekir Ahmet 
Published: May 2021

Abstract
The main target of this work is implementing multiple accurate cubic optical solitons for the nonlinear Schrödinger equation in the presence of third-order dispersion effects, absence of the chromatic dispersion. The emergence cubic optical solitons of the proposed model are extracted for the kerr-law and power law nonlinearity in the framework of two distinct techniques, the first one is the extended simple equation method (ESEM), while the other is the solitary wave ansatz method (SWAM). These cubic optical solitons for the kerr-law and power law nonlinearity have been extracted successfully at the same time and parallel via these two different techniques. A good comparison not only between our achieved results by these two manners but also with that achieved previously has been extracted. .
Two-Dimensional Nanoplatelet Superlattices Overcoming Light Outcoupling Efficiency Limit in Perovskite Quantum Dot Light-Emitting Diodes
Authors: Kumar Sudhir , Marcato Tommaso , Krumeich Frank , Li Yen-Ting , Chiu Yu-Cheng , Shih Chih-Jen 
Published: May 2021

Abstract
Quantum dot (QD) light-emitting diodes (LEDs) are emerging as one of the most promising candidates for next-generation displays. However, their intrinsic light outcoupling efficiency remains considerably lower than the organic counterpart, because it is not yet possible to control the transition-dipole-moment (TDM) orientation in QD solids at device level. Here, using the colloidal lead halide perovskite nanoplatelets (NPLs) as a model system, we report a directed self-assembly approach to form the two-dimensional superlattices (2DSLs) with the out-of-plane vector perpendicular to the substrate plane. The ligand and substrate engineering yields close-packed planar arrays with the side faces linked to each other. Emission polarization in individual NPLs rescales the radiation from horizontal and vertical transition dipoles, effectively resulting in preferentially horizontal TDM orientation. Based on the emissive thin films comprised of stacks of 2D superlattices, we demonstrate an enhanced ratio of horizontal dipole as revealed by 2D k-space spectroscopy. Our optimized single-junction QD LEDs showed peak external quantum efficiency of up to 24% and power efficiency exceeding 110 lm W-1, comparable to state-of-the-art organic LEDs.
The Evolution Mechanism of the Slope Toppling Deformation for Early-Warning Analysis
Authors: Mu Jian-qiao , Li Tian-tao , Pei Xiang-jun , Huang Run-qiu , Lan Fu-an , Zou Xue-qing 
Published: May 2021

Abstract
With massive engineering projects performed in high and steep mountain areas, the evidence of toppling deformation, which has been an important engineering geological problem in construction, has been exposed and observed in quantities. Three key issues in the early warning of toppling slopes are the boundary condition, evolution mechanism, and deformation stability analysis. This paper investigates an evolution mechanism for timely predicting the occurrence of toppling induced slope failure in rock masses, relates boundary formation and progressive development about toppling fracture planes. By describing an instantaneous toppling velocity field and identifying two possible fracture plane geometries (linear and parabolic), the optimal path of toppling fracture plane is searched via critical toppling heights (i.e., minimum loads) calculation using the upper bound theory of limit analysis. It is interesting to find that no matter what the slope structures and mechanical parameters are, the optimal path of toppling fracture plane is straight and most likely oriented perpendicular to the bedding planes. Hereby, considering structural damage will enable progressive toppling deformation instead of systemic failure, the toppling deformation evolution is probably taking place of a loop following the formation of the first fracture plane due to exceeding slope critical height. In the loop, deformation and column inclination updates due to fracture plane formation and fracture plane inclination increase to adjust the changed inclination of columns, as it may take degrees perpendicular to columns. And this progressive formation of ever more inclined fractures plane is what lead to sliding collapse. Altogether we divide the toppling evolution into 5 stages, and define the instability criterion for toppling deformation transform into sliding collapse as the fracture plane inclination being equal to its friction angle. In addition, a PFC2D simulation of the entire slope toppling process is performed to verify this speculative evolution mechanism, and a satisfactory result is acquired. Finally, a deformation calculation model of toppling slopes is proposed for stability analysis in accordance with the instability criterion, which is further applied in a typical toppling case. The findings of this study could lay a foundation for the deformation, stability and early-warning analysis of toppling slopes.
The challenges in control COVID-19 in Injibera, Awi Zone, North East Amhara, Ethiopia
Authors: Amsalu Alemayehu 
Published: May 2021

Abstract
Background: In the globe, on April 2021, 130 million coronavirus cases, around 2.8 million were deaths, 102 million were recovered and 105.2 million were closed cases of COVID-19 reported. On April 2021, the world population were 7.9 billion of which United Nations estimates were 1.65% COVID-19 cases included the Ethiopia in report. The main objective of the study was identify the challenges of in control COVID-19.Methods: The cross-sectional study design was used November to February 2021 in Injibera from Ethiopia. The total 385 respondents using simple random sampling were interviewed. The chi-square test of association and ordinal logistic regression was applied to identify the effect of predictor variables on challenges in control COVID-19.Results: Out of 385 respondents 277(71.95%) were high challenges in control COVID-19 in Injibera. There was a significant relationship with social media and challenges of in control virus (p-value = 0.047). The variables considered social media, housing status and influence were significant relationship with challenges of in control virus (p-value < 5%). Facebook users were the responsible causes of challenges in control COVID-19 (p-value = 0.023). The more social media followed, decreased the occurrence of challenges in control virus. In addition, a unit increase rented, the challenges in control virus decreased by 0.60 times (p-value = 0.009).Conclusion: Winning against the coronavirus together with world couldn’t be a marathon. COVID-19 couldn’t be won without collective global and local effort. It would also need serious thinking, discipline and war against the only virus. COVID-19 war needs in control, the globe should be faced free, coordination and discover scientific methods together.
A Postpartum Rebound of Platelet Count in Patient with Type 2 Calreticulin -Mutant Essential Thrombocythemia: A Case Report
Authors: Al-Mashdali Abdulrahman Fadhl , Yassin Mohamed 
Published: May 2021

Abstract
Essential thrombocythemia (ET) is an uncommon myeloproliferative neoplasm (MPN). It is more commonly encountered in females; around 20% of them are below 40 years old. The optimal management of ET during pregnancy and after delivery is still not well established. Here, we report a case of a young lady with ET who developed a marked rebound in her platelet count two weeks after delivery. She was on Pegylated Interferon (PEG-IFN) alfa 2-a during pregnancy, but she had stopped it on her own one month before delivery. We resumed her therapy, and subsequently, her platelet count reduced dramatically within four weeks to the acceptable range. This case emphasizes the importance of platelet count follow-up after delivery and outlines the management approach in such cases.
Analysis of Spatially Extended Excitable Izhikevich Neuron Model near Instability
Authors: Mondal Arnab , Mondal Argha , Sharma S. , Upadhyay Ranjit Kumar 
Published: May 2021

Abstract
The article focuses on the issue of a spatiotemporal excitable biophysical model that describes the propagation of electrical potential called spikes to model the diffusion induced dynamics based on an analytical development of amplitude equations. Considering the Izhikevich neuron model consisting of coupled systems of ODEs , we demonstrate various results of spatiotemporal architecture ( PDEs ) using a suitable parameter regime. We analytically perform the saddle node bifurcation and Hopf bifurcation analysis with bifurcating periodic solutions that show the transition phases in the system dynamics. We study different types of firing patterns both analytically and numerically by the formation of Riccati differential equation. To examine the characteristics of diffusive instabilities, we use Turing amplitude equations by multiscaling method and then expansion in powers of a small control parameter. The instabilities and Turing bifurcation are established using the theoretical analysis and numerical simulations. The spatial system has potential effects on the deterministic system as a result of the diffusive matrices with various couplings and the coupled oscillators with this nearest neighbor coupling show synchronization measured by the synchronization factor analysis. Our results qualitatively reproduce different phenomena of the extended excitable system based with an efficient analytical scheme.
The impact of a patient trolley's intra-hospital speed and position on the quality of ventilation performed by a self-inflating bag.
Authors: Sanak Tomasz , Chaluda Monika Bednarek , Szydek Magdalena Kromka , Zadlo Anna , Konieczna Dorota , Gorecki Tomasz , Jaskula Jerzy , Cebula Grzegorz , Łyzinski Karol , Malec Karol , Dziechciowski Zygmunt 
Published: May 2021

Abstract
Purpose: The aim of the study is to make a quantitative and qualitative assessment of selected parameters connected with a patient's ventilation using a self-inflating bag during simulated 'head-first' or ‘legs-first' directions of patient transport. Methods: Seventeen people participated in the conducted study. Their task included conducting alternative ventilation during the transport of the patient (Airway Management Simulator BT Inc.) by using the head or the legs technique: in the transport trolley's movement direction. At all times during the transport, video recording was carried out non–stop, and the spectrum of generated vibrations was recorded using the SVAN 958 vibration spectrum analyser, with a three-direction SVANTEK SV 39A disc for measuring whole body vibrations. Additionally, a survey was carried out. The task of the research participants was to indicate the degree of performer comfort related to the ventilation and the transport process. The assessment of the results was then subjected to statistical analysis. Results: The duration of the patient transport by using the legs-first technique was shorter (57.5 s on average) in comparison with the head-first one (62.5 s on average). The subjective assessment of performer comfort on the transport and ventilation process with the legs-first technique was perceived as higher compared to the head-first one. During the patient transport, the highest a RMS acceleration values in the vertical direction were obtained for frequencies 8-25 [Hz], corresponding to the resonance frequencies of the head (17-25 Hz), trachea and bronchi (12-16 Hz), lungs (4-11 Hz) and the spine (8-12 Hz). According to other authors, vibrations with a frequency of 8-10 Hz lead to a decrease in blood pressure, bradycardia and bradypnoe; vibrations at a frequency of 11-12 Hz cause increased heart rate, peripheral vasoconstriction, fatigue, abnormal temperature, nausea, abdominal and chest pain, while vibrations above 12 Hz cause dangerous arrhythmia, muscle tremors, pain and bleeding. Conclusions: The recommended position of intra-hospital patient transport is the legs-first technique. At the stage of preparation for transport, it is necessary to keep in mind the ergonomic aspects of carrying out possible rescue procedures, e.g. artificial ventilation, the effectiveness of which depends on the height of the patient’s trolley, the elbow-shoulder angle of the paramedic, and their back inclination in the thoracolumbar section. The training of medical staff should include conducting high fidelity simulation of activities connected with e.g. transport, enabling future paramedics to acquaint themselves with the working conditions in terms of the effectiveness of actions and ensuring adequate work ergonomics.
SERS background imaging – A versatile tool towards more reliable SERS analytics
Authors: Ebersbach Paul , Münchberg Ute , Freier Erik 
Published: May 2021

Abstract
Surface-enhanced Raman scattering (SERS) is a highly selective and sensitive straightforward analytical method, which is however not yet established in routine analysis due to a lack of reliability and reproducibility. To address this limitation, we show the distinct correlation of the ever-present but often neglected broad SERS background continuum with the SERS signal intensity of the analyte and how to exploit this correlation for an easy-to-handle, automatable and more reliable SERS measurement. First, fast and high-contrast imaging of the SERS substrate is performed for hot spot localisation utilizing the SERS background. Subsequently, highly enhanced SERS spectra are recorded at the centre of these spots. Furthermore, we correlate our SERS background imaging with other optical imaging modalities and electron microscopy to assess structure-property relationships. Monte Carlo simulations based on actual measurements illustrate the sampling error of a conventional SERS experiment and the advantages our method provides.