bluuebunny/crossref_metadata_2025_split huggingface dataset:
Validación de una versión reducida del Cuestionario Estilos de Respuesta Parental (CERP-R) frente a la enfermedad de un hijo
Authors: Egea Zerolo Blanca , García-Vivar Cristina , Núñez Partido Juan Pedro , Visedo Paula , Pitillas Salvá Carlos 
Published: August 2020

Tener un hijo con una enfermedad grave puede ser muy estresante para los padres. Con el objetivo de ofrecer a los profesionales de la salud un sistema preciso y de fácil aplicación para detectar diferentes respuestas parentales frente a la enfermedad del hijo se creó una versión breve del Cuestionario de Estilos de Respuesta Parental (CERP).
Objetivo: Analizar la fiabilidad y la validez de una versión reducida del CERP en una muestra de padres de niños y adolescentes con enfermedad crónica.
Metodología: Se analizaron las características psicométricas (validez, fiabilidad y análisis factorial) de una versión reducida a 16 ítems de la versión original del CERP, que mide principalmente cuatro formas de respuesta parental negativa frente a la enfermedad del hijo: desgana/disforia, irritabilidad/rechazo, sobreprotección y percepción de desajuste. La muestra estuvo compuesta por 28 padres y madres de un hijo enfermo.
Resultados: El análisis de fiabilidad de la versión reducida (CERP-R) mostró un índice de consistencia interna alto. En los datos globales del cuestionario no hay diferencias estadísticamente significativas entre padres y madres de las mismas parejas en cuanto a su puntuación global. En el análisis por factores, las respuestas de disforia/desgana son significativamente más altas en madres, mientras que la sobreprotección es significativamente superior entre padres.
Conclusión: El CERP-R analiza las diferencias en las respuestas afectivas de los padres y madres frente a la enfermedad del hijo. Es un instrumento fiable y válido, que permite medir los diferentes estilos de respuesta parental, de cara a planificar intervenciones familiares.
Dynamical Instabilities in Systems of Multiple Short-period Planets Are Likely Driven by Secular Chaos: A Case Study of Kepler-102
Authors: Volk Kathryn , Malhotra Renu 
Published: August 2020

Abstract
We investigated the dynamical stability of high-multiplicity Kepler and K2 planetary systems. Our numerical simulations find instabilities in ∼20% of the cases on a wide range of timescales (up to 5 × 109 orbits) and over an unexpectedly wide range of initial dynamical spacings. To identify the triggers of long-term instability in multiplanet systems, we investigated in detail the five-planet Kepler-102 system. Despite having several near-resonant period ratios, we find that mean-motion resonances are unlikely to directly cause instability for plausible planet masses in this system. Instead, we find strong evidence that slow inward transfer of angular momentum deficit (AMD) via secular chaos excites the eccentricity of the innermost planet, Kepler-102 b, eventually leading to planet–planet collisions in ∼80% of Kepler-102 simulations. Kepler-102 b likely needs a mass ≳0.1 M
⊕, hence a bulk density exceeding about half Earth’s, in order to avoid dynamical instability. To investigate the role of secular chaos in our wider set of simulations, we characterize each planetary system’s AMD evolution with a “spectral fraction” calculated from the power spectrum of short integrations (∼5 × 106 orbits). We find that small spectral fractions (≲0.01) are strongly associated with dynamical stability on long timescales (5 × 109 orbits) and that the median time to instability decreases with increasing spectral fraction. Our results support the hypothesis that secular chaos is the driver of instabilities in many nonresonant multiplanet systems and also demonstrate that the spectral analysis method is an efficient numerical tool to diagnose long-term (in)stability of multiplanet systems from short simulations.
FRB 200428: An Impact between an Asteroid and a Magnetar
Authors: Geng Jin-Jun , Li Bing , Li Long-Biao , Xiong Shao-Lin , Kuiper Rolf , Huang Yong-Feng 
Published: August 2020

Abstract
A fast radio burst (FRB) was recently detected to be associated with a hard X-ray burst from the Galactic magnetar SGR 1935+2154. Scenarios involving magnetars for FRBs are hence highly favored. In this work, we suggest that the impact between an asteroid and a magnetar could explain such a detection. According to our calculations, an asteroid of mass 1020 g will be disrupted at a distance of 7 × 109 cm when approaching the magnetar. The accreted material will flow along the magnetic field lines from the Alfvén radius ∼107 cm. After falling onto the magnetar’s surface, an instant accretion column will be formed, producing a Comptonized X-ray burst and an FRB in the magnetosphere. We show that all the observational features of FRB 200428 could be interpreted self-consistently in this scenario. We predict quasi-periodic oscillations in this specific X-ray burst, which can serve as an independent observational test.
Le poids économique direct de la culture en 2018
Authors: Turner Laure 
Published: August 2020

En 2018, le poids économique direct de la culture, c’est-à-dire la valeur ajoutée de l’ensemble des branches culturelles, est de 47 milliards d’euros. La part de la culture dans l’ensemble de l’économie s’établit ainsi à près de 2,3 %, soit un poids stable pour la sixième année consécutive. Le recul des branches du livre, et plus particulièrement de la presse, continue de peser sur la croissance. À l’inverse, l’audiovisuel, première branche culturelle en termes de poids économique (28 % de la valeur ajoutée de l’ensemble des branches culturelles), les arts visuels et, cette année, le patrimoine, soutiennent la croissance de la valeur ajoutée de la culture. En 2017, 670 000 personnes travaillent dans les secteurs culturels (2,5 % de la population active), principalement dans le livre et la presse (19 %), les arts visuels (16 %) et l’audiovisuel (15 %). Un tiers des actifs travaillant dans les secteurs culturels sont indépendants, contre seulement 12 % dans la population active.
Médialités biographiques, pratiques de soi et du monde
Authors: Delory-Momberger Christine , Bourguignon Jean-Claude 
Published: August 2020

Les notions de « médium » et de « médialité » apportent un renouvellement très fécond dans la manière de penser les médiations du rapport à soi. En montrant le rôle déterminant du médium, de son matériau et de ses formes spécifiques dans le façonnage du rapport à soi, elles amènent à reconnaître que le sujet se constitue dans des pratiques qui sont ce par quoi et ce dans quoi une subjectivité se constitue. Par ailleurs, la notion de « pratiques automédiales » permet d’englober toutes les formes d’expression et de langage : parlées et écrites, photographiques, visuelles, sonores, graphiques, plastiques, numériques, corporelles et gestuelles, scéniques, etc. Entre autres conséquences, la réflexion liée à la « médialité », tout en élargissant le champ des pratiques, ouvre les démarches de formation à de nouvelles approches plus conscientes du rôle constitutif des médiations dans les processus de construction du sujet.
Théâtre et art martial comme médiateurs de soi et de l’indicible
Authors: Drouelle Carole 
Published: August 2020

Au-delà de la recherche d’efficacité, les arts martiaux asiatiques visent à une construction du sujet. Leur action automédiale offre une expérience d’unité de soi. Ils constituent donc des « techniques de soi » (Foucault). Afin de faire apparaître l’indicible sur scène, l’acteur doit préparer son corps par une pratique particulière, par exemple celle d’un art martial. Le metteur en scène russe A. Vassiliev a choisi le wu shu pour construire un « acteur transparent » au service d’un théâtre métaphysique. Ainsi, la pratique martiale fournit à l’acteur à la fois une technique automédiale et une voie pour incarner l’indicible sur scène.
Economic analysis of land management practices among crop farmers in Osun State, Nigeria
Authors: Ezekiel A.A. , Ayinde E.O. , Akinsola G.O. 
Published: August 2020

Increase in soil degradation has negatively impacted on food production. This therefore necessitates sound land management practices. This study analyzed the economics of the land management practices among crop farmers in Osun State, Nigeria. Data were collected with the aid of structured interview schedule from 80 respondents in four Local Government Areas of the state using a three-stage sampling techniques. Budgetary and multiple regression analyses were the analytical tools employed. About 63% of the farmers were male and 78.4% of them were above 38 years. Seventy-two percent of the farmers had secondary sources of income. The average gross margin of the farms was N48,456.56k. The total value product increases by a value of N4.90K for every N1 increase in the total variable cost. The study concludes that land management practices such as fertilizer application, length of fallow on land and length of tillage on land have a positive effect on crop output in the study area. Therefore, extension services should be intensified to disseminate modern ideas and technology in crop farming for greater productivity. Activities that promote soil tillage for crop production should be encouraged as this would increase crop output.
Keywords: Economic analysis, Land management, Fallowing, Crop output
Potentials for the commercialization of Cocoyam in Oyun Local Government Area, Kwara State, Nigeria
Authors: Omotesho K.F. , Kayode A.O. , Adebayo S.A. , Akinrinde A.F. , Mohammed A.J. 
Published: August 2020

Despite the nutritional and other advantages of cocoyam over some tuber crops, it remains neglected, underutilised, and non-commercialized in many parts of Nigeria. The study assessed the potentials for the commercialisation of cocoyam. Specifically, it assessed farmers’ awareness of the uses of cocoyam, level of cocoyam cultivation, farmers’ attitude towards its commercialisation, and the constraints to its commercialisation. Two-stage random sampling technique produced 154 respondents and an interview schedule was administered to collect data. Descriptive statistics and the multiple regression analysis were used for data analysis. Results revealed that farmers’ mean age, farming experience and farm size were 53.9 years, 22 years, and 4.3 acres respectively. The level of awarenessof the uses of cocoyam was high (73.52%) and had an averagely positive attitude (mean score = 2.38) towards its commercialisation. Cultivation of cocoyam was mostly on a subsistence level among the farmers (97.3%). High susceptibility to pests and diseases (MS = 3.13) and a higher preference for other tuber crops (MS = 3.09) were the major constraints to the commercialisation of cocoyam. Farmers’ age (β = –0.008), level of education (β = –0.046), household size (β = –0.012), and frequency of extension contact (β = 0.018) determined farmers’ attitude towards its commercialisation. The study concluded that the potentials for the commercialization of cocoyam was appreciable in the study area. Findings underscore the need for research on cocoyam pest and diseases control as well as breeding ofimproved varieties of the plant by National Root Crops Research Institutes.
Key words: attitude, commercialization, neglected, under-utilized and cocoyam
Isolation and Characterization of Lupeol from the Stem of <I>Tapinanthus globiferus</I> (A Rich.) and its Antimicrobial Assay
Authors: Emaikwu V. , Ndukwe I.G. , Mohammed R. , Iyun O.R.A. , Anyam J.V. 
Published: August 2020

Lupeol, a pentacyclic triterpenoid, was isolated from hexane and ethyl acetate solvent system. In antiquity, the stem and leaf infusion of Tapinanthus globiferus has been used ethno-medicinally as a remedy for stomach ache, diarrhea, dysentery, and wounds. Lupeol isolation from this species was carried out by column chromatography after concentrating the crude extract using a rotary evaporator, and the structure was determined by analysis of the isolate by IR, 13CNMR, 1HNMR, HSQC, and HMBC spectral analysis as well as comparison with reported data. This is the first isolation of lupeol from the stem of this species.
Keywords: Tapinanthus globiferus, Column chromatography, dysentery, Lupeol
Kinetic and Thermodynamic Study of Oxidative Decolourisation of a Typical Food Dye (Tartrazine) in an Aqueous Environment
Authors: Okeola F.O. , Odebunmi E.O. , Amoloye M.A. , Babamale H.F. , Thema S. , Abdulsalam J.O. 
Published: August 2020

The study was carried out to describe the kinetics and thermodynamics of hydrogen peroxide oxidation of a typical food dye (Tartrazine). The effect of different operational factors were investigated spectrophotometricallyat wavelength460 nm under pseudo first order reaction.These included concentration of the oxidant and the dye, the pH, ionic strength and temperature of the reacting medium and the presence of transition metal ion as homogenous catalyst. A complete and smooth decolourisation was observed. The results showed that the rate of oxidation of dye increased with increasing in concentration of substrate and oxidant. Increasing in temperature, ionic strength and pH of the basic reaction medium also raised the reaction rate. The rate of oxidation also increased with increasing in the concentration of Fe (III) ion. Pseudo second order rate constant (k2) obtained was 1.95 x 10-3 M-1s-1 and 3.8 x10-3M-1s-1 in the absence and presence of Fe (III) ion respectively. The Arrhenius activation energy for the oxidation in the absence and presence of Fe (III) ion were 47.23 kJmol-1 and 42kJmol-1 respectively. Other thermodynamic parameters showed entropy of activation (ΔS#), free energy of activation (ΔG#) and Enthalpy of activation of the reaction (ΔH#) in the presence of Fe (III) as -34.7 JK-1mol-1, 48.4 kJmol-1 and 40.30 kJmol-1 respectively. The results in the absence of Fe (III) ion were -24.6 JK-1mol-1, 51.2 kJmol-1 and 44.0 kJmol-1respectively. The relative lower activation energy (Ea),fairly higher negative value of (ΔS#) and higher (ΔG#) , with higher rate constant in the presence of Fe(III) ion showed Fe(III) ion enhancement of rate of decolourisation.
Keywords: Tartrazine Food dye, Kinetics, Thermodynamics, Hydrogen Peroxidede colourisation,
Concentration of Heavy Metals in Vegetables Cultivated around Dumpsites in Jimeta and Ngurore Areas, Adamawa State, Nigeria
Authors: Sakiyo D.C. , Chessed G. , Eli J. , Usongo Y.J. 
Published: August 2020

The study analyses the health risk assessment of the concentration of Iron, Lead, Copper, Chromium, and Cadmium heavy metals in vegetables grown near dumpsites of Jimeta and Ngurore areas of Adamawa State, Nigeria. Vegetables mainly Spinach (Spinacia oleracea) and lettuce (Lactuca sativa) were collected in triplicates and analyzed using Atomic Absorption Spectrophotometer Buck 210VGP (AAS). The result revealed that heavy metals detected in spinach at Jimeta dumpsite decreased in the following order: Fe (3.7 mg/kg) > Pb (0.18 mg/kg) > Cu (0.12 mg/kg) > Cr (0.07 mg/kg) > Cd (below limit of detection), compared to the metal concentration in spinach at Ngorure dumpsite with lower concentration of heavy metal which decreased in the order of: Fe (2.5 mg/kg) > Pb (0.16 mg/kg) > Cu (0.14 mg/kg) > Cr (0.02 mg/kg) > Cd (below limit of detection). Other result for Spinach in Jimeta decreased in the order Fe (3.31mg/kg) > Pb (0.2mg/kg) > Cu (0.11mg/kg) > Cr (0.05mg/kg) > Cd (ND) beyond the limit of detection while Lettuce decreased in the order Fe (22.54mg/kg) > Cu (0.31mg/kg) > Pb (0.12mg/kg) > Cr (0.07mg/kg) > Cd (ND) beyond the limit of detection. Fe is the most abundant element in the vegetables with a mean value of 21 mg/kg followed by Pb (0.177 mg/kg). The analyses of paired T-test for vegetables in Ngurore and Jimeta at 0.05 level of significant confirmed that Cu and Cr showed no statistically significant difference in their concentration level while Fe and Pb confirmed that there was statistically significant difference in their concentration level. However, the detection of heavy metals in these vegetables calls for close environmental monitoring and adequate public awareness. This is necessary to discourage further pollution which could lead to high metal concentration and metal poisoning in vegetables and invariably humans that consume them.
Keywords: Spinacia oleracea, Lactuca sativa, Heavy metal, Atomic Absorption Spectrophotometer
Evaluation of Revenue Channels and Challenges in Sustainable Management of Oyo State Forest Reserves, Nigeria
Authors: Kolade R.I. , Adejumo A.A. , Olugbire O.O. , Akanni O.F. , Fatoki O.A. 
Published: August 2020

Forest revenue system is an instrument used by government to achieve various goals and objectives in forest management. This paper evaluates the various challenges of revenue collection and remittance in Oyo forestry service in Nigeria. A total of 94 forest officials were identified and reached (100%) in all the forestry administrative zones in Oyo State, including the headquarters through a set of structured questionnaire and dataobtained were analyzed using descriptive statistics and logit regression at α0.05. Theaverage age of the respondents was 39.7±6.5 years, mostly male (71%), married (75.6%) and had secondary education (63%). Challenges confronting adequate revenue collection included lack of proper law enforcement, payment of cash by revenue collectors and inability of field officers to withstand armed illegal fellers with odds-ratio of 55694.85, 668.78 and 20.79 respectively. Problems facing adequate revenue remittance were remittance by field staff, inaccessibility ofbank on time, lack of provision of incentives for running cost by the government and possibilities of field officersindulging in printing of fake receipts with odds-ratio of 140.18, 116.80, 3.65 and 3.44 respectively. The studyexposed the various challenges facing adequate revenue collection and remittance in Oyo State forestry service, it istherefore necessary for the forest managers in the State to utilize this information wisely for the betterment of revenuegeneration.
Keywords: Challenges, Revenue collection, Revenue remittance
Evaluation of the Direct Compression Properties of Microcrystalline Cellulose Obtained from Cassava Fermentation Waste in Paracetamol Tablet Formulations
Authors: Eraga S.O. , Elue D.N. , Iwuagwu M.A. 
Published: August 2020

Background: Natural materials have gained a lot of significance in the field of drug delivery because of their cost effectiveness and ready availability.Purpose: The study aimed at evaluating the direct compression property of microcrystalline cellulose from cassava fermentation waste in directly compressed paracetamol tablet formulations.Methods: Alkali delignification of the dried cassava fermentation fibres, followed by bleaching and acid depolymerisation was employed in the extraction of α-cellulose and conversion to microcrystalline cellulose (MCC). The MCC obtained and Avicel® were used at different concentrations (5.0-15 %w/w) to formulate batches of paracetamol tablets by directed compression. A comparative evaluation of the formulated paracetamol granules and tablets properties were undertaken.Results: The paracetamol granules formulated showed good flowability with Hausner’s ratios of 1.15-1.25, Carr’s indices of 13.10-20.00 % and angles of repose ≤ 34.41°. The formulated tablets showed good hardness (> 5.0 kgf) and disintegration time within 10 min. Only tablets containing 5.0 and 7.5 %w/w of the test MCC failed the BP dissolution test specification for tablets which stipulates that at least 70 % of the drug should be in solution after 30 min.Conclusion: This study has shown that the extracted MCC has direct compression ability evidenced in the mechanical strength of the formulated paracetamol tablets. The tablet properties of the formulated paracetamol tablets revealed pharmaceutically acceptable tablets though they were not comparable with Avicel® at all concentrations and the MCC may serve as an alternative local source for direct compression excipient.
Keywords: Cassava, microcrystalline cellulose, direct compression, paracetamol, tablets
Investigation of Antioxidant Compositions and Antioxidative Activities of Ethanol Extract of <I>Alstonia boonei </I>Stem Bark
Authors: Uroko R.I. , Sangodare R.S.A. , Onyeabo C. , Agbafor A. , Uchenna O.N. , Nwuke C.P. , Asadu C.L. 
Published: August 2020

Background: Oxidative stress is the major mechanism of action employed by many drugs, xenobiotics and toxicants that generate reactive metabolites in the body to elicit adverse reactions when there are insufficient antioxidants to neutralise the excess reactive metabolites.
Objectives: This study evaluated antioxidant compositions and antioxidative activities of ethanol extract of Alstonia boonei stem bark with the view of understanding its ameliorative potentials on oxidative stress.
Materials and Methods: Thirty-six rats divided into 6 groups of 6 rats each was used for this study. Group 1 served as normal control, group 2-6 were carbon tetrachloride-induced oxidative stress which served as treatment groups. Group 2 was untreated, group 3 was treated with silymarin (100 mg/kg) while group 4-6 were treated with the extract 100, 200 and 500 mg/kg body-weight for 28 days respectively. The animal study and antioxidant compositions of the extract were analysed using standard methods.
Results: The extract was found to rich in antioxidant components such as phenols, flavonoids, β-carotene and lycopene. The extract showed high DPPH (2, 2-diphenyl-1-picrylhydrazyl) and nitric oxide radical scavenging activities and high ferric reducing antioxidant power with increasing concentrations. The significant (P < 0.05) reduction in antioxidant enzymes activities and increased level of lipid peroxidation caused by the carbon tetrachloride induction were significantly (P < 0.05) reversed, in the extract-treated groups relative to the normal control.
Conclusions: These findings suggest that the extract possesses antioxidative properties and can be used in the management of oxidative stress and its related disease conditions.
Keywords: Antioxidant components, Alstonia boonei stem bark, Antioxidative stress, Lipid peroxidation, Antioxidant enzymes.
La Thanatologie dans L’ombre D’imana: Voyages Jusqu’au Bout du Rwanda de Veronique Tadjo
Authors: Onyemelukwe Ifeoma Mabel , Muotoo Chukwunonso Hyacinth , Odudigbo Mercy Eghonghon 
Published: August 2020

La mort est la mort pour chaque être humain partout dans le monde, peu importe son âge, son rang social, sa race ou sa couleur. Mais quelques divergences se manifestent dans le cadre de la conception de la mort par des individus et groupes divers. L’objectif de la présente recherche est l’étude de la mort, ou la thanatologie dans L’ombre d’Imana : voyages jusqu’au bout du Rwanda de l’écrivaine ivoirienne, Véronique Tadjo. Elle dispose, principalement, de deux théories critiques : l’écocritique et la psychanalyse. La typologie de l’écocritique selon le postulat d’Ifeoma Onyemelukwe s’avère utile dans cette étude ; de même l’approche sociologique. Notre recherche aboutit à huit types de mort : physique, psychologique, spirituelle et symbolique, entre autres. Il a été constaté que Tadjo, dans L’ombre d’Imana : voyages jusqu’au bout du Rwanda, ne se contente pas avec la peinture de l’horreur du génocide, qu’elle a d’ailleurs fait excellemment, mais elle va plus loin pour proposer des solutions concrètes au fléau mondial appelé le génocide. Alors, elle recommande la mort de la haine et du génocide au Rwanda ; préconise la réconciliation et la naissance d’un nouveau Rwanda. Heureusement qu’aujourd’hui, le Rwanda a été reconstruit au point d’être l’une des étoiles les plus brillantes d’Afrique (Newey 1).
Mots clés : Thanatologie, mort, génocide, L’ombre d’Imana: voyages jusqu’au bout du Rwanda, Veronique Tadjo