Miracle-dz/UniFAR-FTUs huggingface dataset:
Antihypertensive effect of Harungana madagascariensis LAM. ex poir. On sodium fluoride-induced hypertension and Associated cardiorenal dysfunctions

Hypertension is an important risk factor for cardiovascular diseases, which are major causes of mortality globally. This study evaluated the antihypertensive effects of Harungana madagascariensis on sodium fluorideinduced hypertension. Twenty-five rats were randomly divided into five groups (A-E). Group A (control), received normal food and water with no treatment; Groups B to E were exposed to 300 ppm sodium fluoride (NaF). In addition, Group C was treated with 10 mg/kg enalapril, while Groups D and E were treated with 100 mg/kg and 200 mg/kg of H. madagascariensis extract, respectively. The result showed that there was a significant decrease in the systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean arterial pressure (MAP) of the rats treated with 200 mg/kg of H. madagascariensis compared with rats exposed to NaF alone. Also significant increase was observed in the activities of the enzymatic and non-enzymatic antioxidants in the cardiac and renal tissues of rats treated with 100 mg/kg and 200 mg/kg of H. madagascariensis extract similar to enalapril, compared with rats exposed to NaF alone. However, serum nitric oxide (NO) decreased significantly in rats exposed to NaF alone compared with rats that received 200 mg/kg H. madagascariensis as treatment. Blood urea nitrogen (BUN) and creatinine increased significantly in rats exposed to NaF alone compared with rats that received 200 mg/kg H. madagascariensis as treatment. The histopathology of the cardiac tissue of the rat exposed to NaF alone showed mild hydropic and vacuolar degeneration of cardiomyocytes, while the renal tissue showed foci of markedly flattened tubular epithelial cells and congestion of interstitial blood vessels. The aforementioned lesions were ameliorated in rats treated with 200 mg/kg H. Madagascariensis. In conclusion, H. madagascariensis had potent antihypertensive effect in rats. The effect was probably mediated via the alleviation of oxidative stress in cardiac and renal tissues. Key words: Harungana madagascariensis, Antioxidant activity, Oxidative Stress, Hypotensive effect, Sodium fluoride.
Acid-catalyzed hydrolysis of cis- and trans-anethole oxides : discrete carbocation intermediates and Syn/anti hydration ratios

Rate and product studies of the hydronium ion-catalyzed hydrolysis reactions of trans-anethole oxide (12b) and its geometric isomer, cis-anethole oxide (13b), were carried out. Acid-catalyzed hydrolysis of trans-anethole oxide is 50 times faster than that of its cis isomer and this difference in reactivity is attributed to steric interactions between the cis-β-CH 3 and the aryl group in the transition state for hydrolysis of cis-anethole oxide that are not present in the transition state for the acid-catalyzed hydrolysis of trans-anethole oxide. Carbocation intermediates in the hydrolysis of both 12b and 13b are trapped, subsequent to their rate-limiting formation, by azide ion
Viscoelastic behavior of polymer surface during wetting and dewetting processes

The contact angle of water was measured with the Wilhelmy plate method on apolar polymers: soft ethylene-propylene copolymer (EP), rigid polypropylene (PP), and their blends PP/EP (80 wt % PP) and EP/PP (20 wt % PP). Upon liquid displacement, the contact angles of the soft materials, EP and EP/PP, depended on viscoelastic energy dissipation due to solid deformation. This was observed in different situations: wetting and dewetting, liquid displacement due to the relative motion of the plain liquid with respect to the solid, and meniscus relaxation when that motion was stopped. The wetting hysteresis of polymer blends may be understood by considering viscoelastic energy dissipation and the static contact angles. The former depends on the elastic modulus while the latter is determined by the more hydrophobic phase and the less hydrophobic phase, for advancing and receding contact angles, respectively.
An Experimental Study of the Change in the Contact Angle of an Oil on a Solid Surface

The effects of pH and surfactant concentration on the change in the contact angle of an oil on both stainless steel and glass surfaces have been studied. The pH ranged from 7.0 to 10.0. Sodium dodecyl sulfate (SDS), an anionic surfactant, was the surfactant used in this study. Two different surfactant concentrations were used, one concentration near the critical micelle concentration (cmc) and one concentration significantly above the cmc. The interfacial tension between the oil and surfactant solutions was measured over the same pH and concentration ranges as the contact angle measurements. Increasing the pH as well as increasing the surfactant concentration causes a decrease in the oil/surfactant solution interfacial tension for solutions of SDS. Over the range of pH values and SDS concentrations studied, increasing the pH and surfactant concentration above the cmc hinders the change in the contact angle of the oil on both the stainless steel and glass surfaces despite the decrease in the interfacial te.
Strategic Overcapacity in Live-Streaming Platform Selling

We study the capacity investment strategy of a manufacturer who sells his product on a live-streaming shopping platform. The manufacturer first decides the production capacity, then the platform decides her commission, and finally the manufacturer sets the retail price. The platform has an informational advantage about the product demand due to proximity to the market and accessibility to the sales data of similar products. The manufacturer without a direct access to the demand information tries to infer it from the commission decision of the platform, which results in a signaling game. Interestingly, the manufacturer may strategically install a strictly higher capacity than any demand to be realized. The overcapacity also benefits the manufacturer by driving down the commission charged by the platform when observing a small market potential due to the signaling effect.
Two-Dimensional Team Lifting Prediction With Different Box Weights

A novel multibody dynamics modeling method is proposed for two-dimensional (2D) team lifting prediction. The box itself is modeled as a floating-base rigid body in Denavit-Hartenberg representation. The interactions between humans and box are modeled as a set of grasping forces which are treated as unknowns (design variables) in the optimization formulation. An inverse-dynamics-based optimization method is used to simulate the team lifting motion where the dynamic effort of two humans is minimized subjected to physical and task-based constraints. The design variables are control points of cubic B-splines of joint angle profiles of two humans and the box, and the grasping forces between humans and the box. Two numerical examples are successfully simulated with different box weights (20 Kg and 30 Kg, respectively). The humans’ joint angle, torque, ground reaction force, and grasping force profiles are reported. The joint angle profiles are validated with the experimental data.
Bridging Coronary Physiology Into Clinical Application of Acute Coronary Syndrome

ABSTRAKArteri normal memiliki tiga struktur lapisan yaitu tunika intima, tunika media, dan tunika adventisia. Tunika intimamerupakan lapisan terdalam dari pembuluh darah koroner yang didalamnya terdapat molekul yang bersifatantitrombotik seperti heparin sulfat, trombomodulin, dan plasminogen activator. Selain itu, tunika intima jugamengandung zat-zat yang mengatur kontraksi sel otot polos tunika media, yaitu nitrit oksida (vasodilator) danprostasiklin (vasokontriktor). Tunika intima dan tunika media tampaknya berhubungan langsung dalam terjadinyaproses aterosklerosis. Sedangkan, peranan tunika adventisia belum diketahui secara. Terakumulasinya lesiarterosklerotik dan faktor stres hemodinamik dan degradasi matriks ekstraseluler akan menyebabkan kerentanan kapsulfibrosa plak aterosklerotik sehingga menjadi ruptur dan membentuk thrombus. Trombus yang terjadi di koronermenyebabkan kondisi sindrom koroner akut, ditandai gejala yang khas seperti nyeri dada tergantung trombus yangterbentuk. Dalam mempelajari sindrom koroner akut tentu tidak dapat dipisahkan dari pemahaman fisiologi pembuluhdarah koroner dan proses aterosklerosis. Oleh karena itu, artikel ini bertujuan untuk menjelaskan secara singkatmengenai fisiologi koroner.
Software Metrics: Investigating Success Factors, Challenges, Solutions And New Research Directions

: Software metrics is becoming important every day. A measure of software characteristics which are countable or measurable is known as software metrics. Software metrics are very important because they are used for many purposes for example, estimating efficiency, arranging work things and estimating execution of software etc. Software product and software development process specific attributes are measured by software metrics. Many metrics related to coupling, cohesion etc. have been defined. This paper investigates success factors and challenges in the implementation of software metrics and also tries to investigate solutions to those challenges. The paper explains new research directions to software metrics as well which really a need of today.
MECHANISM OF COBALT CLUSTER SIZE CONTROL IN CO-MCM-41 DURING SINGLE-WALL CARBON NANOTUBES SYNTHESIS BY CO DISPROPORTIONATION

The mechanisms controlling the reduction of cobalt and the growth of metallic cobalt clusters in Co-MCM-41 catalysts at different stages in the process of single-wall carbon nanotubes (SWNT) synthesis were investigated both by in-situ and ex-situ X-ray absorption spectroscopy. We have found that prereduction of the catalyst in hydrogen at temperatures below 700 °C does not reduce the cobalt ions to metallic cobalt, but removes hydroxyl groups and oxygen ions creating oxygen vacancies and/or a partially reduced cobalt species. The prereduction treatment, however, does increase the density of electrons at the Fermi level weakening the interaction of Co2+ with the silica framework. Subsequent exposure of the catalyst to CO at 750 °C causes CO to strongly interact with the cobalt clusters most likely by the transfer of electrons into the d orbitals of Co. This strong interaction makes the cobalt more mobile at the surface and allows it to nucleate into clusters capable of dissociating CO and initiating the gr.
Guided adaptive interpolation filter

: Edge-aware smoothing has proved to be a fundamental technique for various image processing and computer vision tasks. In this study, the authors introduce a local, non-iterative, and effective edge-preserving filter namely guided adaptive interpolation filter (GAIF). GAIF can be used as a post-processing step after any smoothing filter to improve its edge preservation performance without reformulation. GAIF has an O ( N ) computation complexity, where N is the total number of pixels in the image. To further increase the efficiency of GAIF at edge-preservation, two techniques are introduced and demonstrated. GAIF efficiency is demonstrated and compared to state-of-the-art techniques on a number of tasks including image smoothing, flash/no-flash image denoising/fusion, single image dehazing, and image details enhancement.
Kernel difference maximisation‐based sparse representation for more accurate face recognition

Most methods for sparse representation are designed to be used in the original space. However, their performance is not always satisfactory especially when training samples are limited. According to the previous studies, more information can be obtained from samples in the feature space than those in the original space. The authors propose a novel kernel difference maximisation-based sparse representation method, and its remarkable performance in face recognition is demonstrated by the experiments. The proposed method converts all the samples into the feature space, and a test sample can be denoted as a representation with all the training samples’ linear combinations. Besides, a novel solution scheme for sparse representation is utilised to obtain the l 2 regularisation-based sparse solution. Finally, the classification of the test sample can be easily judged according to the representation result. The representation results of test samples from different classes obtained by their method are very different, making the classification of test samples easier. Besides, the proposed method is simpler than the related methods and does not require dictionary learning.
ELEIÇÕES PRESIDENCIAIS 2018 E A PRODUÇÃO DE SIGNIFICADOS NA PERSPECTIVA DA SEMIÓTICA SOCIAL E DOS MULTILETRAMENTOS

Este artigo tem como objetivo apresentar e analisar os dados relacionados ao processo de producao de significados envolvendo um eleitor do candidato Jair Bolsonaro, de direita, e um eleitor do candidato Fernando Haddad, de esquerda, atraves dos conteudos publicados na rede social Facebook, durante o mes de outubro de 2018, periodo esse que antecedeu o segundo turno das eleicoes presidenciais. As analises foram apoiadas nas discussoes referentes a Semiotica Social (HODGE; KRESS, 1988; NATIVIDADE; PIMENTA, 2009; KRESS, 2003, 2010) e sobre os Multiletramentos (KALANTZIS; COPE, 2012; SOARES 2010). A metodologia aplicada foi o estudo de caso (YIN, 2010). Os dados revelaram que os eleitores produziram significados a partir de suas concepcoes politicas buscando denegrir e atacar o candidato adversario, geralmente de forma explicita. Somente o eleitor de esquerda referiu-se ao adversario de forma implicita e intertextual. Para compreensao dos signos, detectou-se a necessidade do conhecimento contextual e multimodal por parte dos interlocutores, os quais deveriam relacionar as postagens as suas vivencias, experiencias de mundo e individualidades.
Long-term Periodicities in Kepler Photometry of Open Cluster NGC 6811

Long-term photometric variability can sometimes be related to the emergence of starspots in the photosphere following a quasi-periodic magnetic activity cycle. In order to investigate the existence and properties of magnetic cycles in a narrow range of fundamental parameters, we focused on solar-type stars in the intermediate-age open cluster NGC 6811 (1 Gyr). The cluster membership was analyzed both in terms of stellar kinematics and Gaia photometry. Rotation periods and photometric variability were analyzed for 138 stars from Kepler light curves and we discuss the existing trends and relationships. We also searched a sample of 11 solar-type stars for cycle-like periodicities and in each case classified the variability as either cyclic, multicyclic, flat, or acyclic. The results suggest a significant scatter, possibly due to sensitive nonlinearities in the dynamo process. This raises theoretical questions on whether these periodicities can be associated to activity cycles and what determines the stellar cycle presence or its period. Also, the lack of solar-twin flat activity stars in NGC 6811 combined with other recent results, suggests that the presence of magnetic grand minima in the Sun is a relatively recent phenomenon.
Review of Catalytic Conditioning of Biomass-Derived Syngas

Thermochemical conversion of biomass to create fuels and chemical products may be achieved through the gasification route via syngas. The resulting biomass-derived raw syngas contains the building blocks of carbon monoxide and hydrogen as well as undesired impurities, such as tars, hydrocarbons, hydrogen sulfide, ammonia, hydrogen chloride, and other trace contaminants. These impurities require removal, usually through catalytic conditioning, to produce a quality syngas for end-use synthesis of liquid fuels, such as mixed alcohols and Fischer−Tropsch liquids. In the past decade, significant research attention has been focused on these catalytic processes. This contribution builds on previous reviews and focuses on capturing the work on catalytic conditioning of biomass-derived syngas that have been performed since the Dayton review in 2002, with an emphasis on tar destruction and steam reforming catalysts. This review organizes and discusses the investigations of catalytic conditioning of biomass-derived .
Ultrasound-enhanced Green Synthesis of 5,5-Diphenylhydantoin Derivatives Using Symmetrical or Unsymmetrical Benzils

A rapid, highly efficient and mild green synthesis of 5,5-diphenylhydantoin derivatives was achieved from the reaction of symmetrical or unsymmetrical benzil derivatives with urea in the presence of ethanolic KOH under ultrasound irradiation. This simple method affords 5,5-diphenylhydantoin derivatives at room temperature in short reaction time with high yield and purity. This study aimed to overcome the limitations and drawbacks of the reported methods such as tedious work-up, low yield and long reaction time.
Microfracturation in rocks: from microtomography images to processes

EDP Sciences 2012Abstract. Fracturing of rocks and other geomaterials involves multi-scale processes, from the nucleationof small cracks, their propagation into a complex heterogeneous solid, to their ﬁnal arrest. In the past10 years, advances in X-ray tomography imaging techniques, either three dimensional or four dimensionalwhen time-lapse acquisitions are performed, allow detecting fractures at small scale and the growth andcoalescence of tiny cracks into well-developed fractures. Some of these fracturing processes involve thecoupling between ﬂuids, chemical reactions and fracturing. In the present study I illustrate some of theseprocesses, how they can be imaged using high-resolution X-ray computed tomography; and how conceptualmodels can make the link between microscopic processes and macroscopic fracturing. This concerns a widerange of applications in geophysics, from fundamental understanding of the rheology of rocks in the Earth’scrust, to salt damage of cultural heritage monuments, hydraulic fracturing of underground reservoirs oremerging technologies of non-conventional hydrocarbon recovery and the underground geological storageof carbon dioxide.
Application of Bayesian analysis to indirect Fourier transformation in small-angle scattering

Using Bayesian analysis for indirect Fourier transformation (IFT) of data from small-angle scattering (SAS) leads to probability distributions for parameters describing the experimental data. This quantification may provide extra information about the scattering system. The shape of the probability distribution for the maximum diameter of the scatterer may contain information about e.g. the heterogeneity of the scattering sample. The information content in the experimental data can be quantified as an `effective number of parameters' which can be determined from the data. The applicability of the Bayesian approach to IFT in SAS is demonstrated using simulated as well as experimental data.
Virtual SDN Network Embedding Algorithm Based on Load Balance

Aiming at Software Defined Network (SDN) virtualization environment, a virtual SDN (vSDN) network embedding method based on fruit fly algorithm is proposed to minimize the overall load imbalance and average control delay of the network. The simulation indicates that the proposed method improves the vSDN request acceptance rate. Besides, it has good load balance performance of the underlying physical SDN network, and reduces the communication delay for controller-to-switch.
Fuerza muscular inspiratoria dinámica y aptitud cardiorrespiratoria en función de edad y sexo

Objective: To analyse the relationship between inspiratory muscle strength and cardiorespiratory fitness in healthy trained elderly, according to age and sex. Method: Descriptive, cross-sectional and prospective study. Of the 153 participants in the EFAM-UV© multicomponent training program and over 60 years, 87 were assessed for body composition, blood pressure, oxygen saturation, maximum inspiratory pressure and 6-min walking test. As exclusion criteria: smoker, suffering/having suffered respiratory, cardiac, neuromuscular or rib cage disease, suffering/having suffered cognitive deterioration and/or wearing dental prostheses. 67 elderly (73.02 ± 4.54 years) were considered for the final analysis. These measurements were carried out for three non-consecutive days separate by 48 and 72 hours. Results: Gender differences in maximum inspiratory strength and cardiorespiratory fitness are confirmed. The moderated association between maximum inspiratory strength and cardiorespiratory fitness, assessed by 6-min walking test, (r=0.468; p<0.005) reduces when taking into account the covariates sex (rs=0.360; p<0.005) and age (re=0.397; p<0.005), with lower R2 in women (0.113 vs. 0.188). Conclusion: These results confirm the need of assessing and training the inspiratory muscles in the elderlies, mainly in women, regardless their physical fitness. Future studies should to analyse which factors can influence the association between maximum inspiratory strength and cardiorespiratory fitness (specially, 6-min walking test) beyond age and sex.
Chemical Shifts, Ring Currents, and Magnetic Anisotropy in Aromatic Hydrocarbons

Both the chemical shifts of nuclear magnetic resonances and molecular diamagneticsusceptibilities have their origin in the electronic currents induced by an external magnetic field. For the aromatic hydrocarbons detailed chemical‐shift measurements and extensive measurements of the magnetic anisotropies are available to aid in a study of the validity of various theories connecting magnetic properties with magnetic electron currents. The available experimental data seem to present a definite paradox. The chemical shifts due to ring currents are theoretically directly proportional to the values of Δχ, the anisotropy in the diamagneticsusceptibility; yet the experimental values of Δχ are much larger than those calculated from theory, while the experimental chemical shifts are substantially smaller than the theoretical ones. Hoarau has suggested that only a part, χ L , of the total anisotropy Δχ arises from the π electrons involved in the ring current and that one should add Δχσ , a contribution from the electrons in the σ bonds, and Δχ p , the contribution due to the localized p electrons. The SCF—MO calculations of χ L for benzene give a value of approximately —30×10—6, which is only about half the experimentally observed value of —59.7×10—6. Rough calculations are presented which indicate that the contributions of the σ and localized p electrons are large enough to account for the observed values of Δχ and χ z for the aromatic hydrocarbons. An analysis of the chemical shifts of the aromatic hydrocarbons shows that they are in agreement with a Δχ value for benzene of approximately —31×10—6 in good agreement with the SCF—MO value of χ L . Calculations of the chemical shifts due to localized magnetic anisotropies show that they are quite small and can frequently be neglected. In calculating ring current contributions to the chemical shift in NMR spectroscopy it is recommended that the SCF—MO value of χ L , —30×10—6, be used in place of the classical value, —49.5×10—6.
Time-of-flight neutron transmission of mosaic crystals

The energy-dispersive neutron transmission of mosaic crystals presents a series of dips in intensity as a result of reflection in the crystal planes. The positions of these dips can be exploited for the definition of the crystal orientation with a resolution of 1 min of arc. The widths of these dips depend on crystal orientation, on the reflection index, on the mosaicity, and on the incident-beam divergence. The capability of the technique to define the orientation and mosaicity of a Cu crystal has been assessed through time-of-flight experiments. A Cu monochromator has been plastically deformed by uniaxial tension in situ, and the evolution of crystal orientation and mosaicity was tracked using the technique. Several crystal reflections at different locations of the sample were simultaneously studied during the experiment. A linear increase of mosaicity on deformation at an average rate of ∼5 min per percentage of shear strain was observed. The reorientation of the crystal as a result of the applied load showed variations across the specimen.