bluuebunny/crossref_metadata_2025 huggingface dataset:
Magnetic Field Structure in Spheroidal Star-forming Clouds. II. Estimating Field Structure from Observed Maps
Authors: Myers Philip C. , Stephens Ian W. , Auddy Sayantan , Basu Shantanu , Bourke Tyler L. , Hull Charles L. H.
Published: June 2020

This paper presents models to estimate the structure of density and magnetic field strength in spheroidal condensations from maps of their column density and their polarization of magnetically aligned dust grains. The density model is obtained by fitting a column density map with an embedded p = 2 Plummer spheroid of any aspect ratio and inclination. The magnetic properties are based on the density model, the Davis–Chandrasekhar–Fermi (DCF) model of Alfvénic fluctuations, and the spheroid flux freezing (SFF) model of mass and flux conservation in Paper I. The field strength model has the resolution of the column density map, which is finer than the resolution of the DCF estimate of field strength. The models are applied to ALMA observations of the envelope of the protostar BHR 71 IRS1. Column density fits give the density model from (2.0 ± 0.4) × 105 to (7 ± 1) × 107 cm−3. The density model predicts the field directions map, which fits the polarization map best within 1100 au, with standard deviation of angle differences of 17°. In this region, the DCF mean field strength is 0.7 ± 0.2 mG, and the envelope mass is supercritical, with a ratio of mass to magnetic critical mass of 1.5 ± 0.4. The SFF field strength profile scales with the DCF field strength from 60 ± 10 μG to 3 ± 1 mG. The spatial resolution of the SFF field strength estimate is finer than the DCF resolution by a factor of ∼7, and the peak SFF field strength exceeds the DCF field strength by a factor of ∼4.
Reflection Features in the X-Ray Spectrum of Fairall 9 and Implications for Tests of General Relativity
Authors: Liu Honghui , Wang Haiyang , Abdikamalov Askar B. , Ayzenberg Dimitry , Bambi Cosimo
Published: June 2020

X-ray reflection spectroscopy is potentially a powerful tool to probe the spacetime geometry around astrophysical black holes and test general relativity in the strong field regime. However, precision tests of general relativity are only possible if we employ the correct astrophysical model and if we can limit the systematic uncertainties. It is thus crucial to select the sources and the observations most suitable for these tests. In this work, we analyze simultaneous observations of XMM-Newton and NuSTAR of the supermassive black hole in Fairall 9. This source has a number of properties that make it a promising candidate for tests of general relativity using X-ray reflection spectroscopy. Nevertheless, we find that with the available data there is not a unique interpretation of the spectrum of Fairall 9, which prevents, for the moment, the use of this source for robust tests of general relativity. This issue may be solved by future X-ray missions with a higher energy resolution near the iron line.
Testing the Fidelity of Simulations of Black Hole–Galaxy Coevolution at z ∼ 1.5 with Observations
Authors: Ding Xuheng , Treu Tommaso , Silverman John D. , Bhowmick Aklant K. , Menci N. , Di Matteo Tiziana
Published: June 2020

We examine the scaling relations between the mass of a supermassive black hole (SMBH) and its host galaxy properties at 1.2 < z <1.7 using both observational data and simulations. Recent measurements of 32 X-ray-selected, broad-line active galactic nuclei (AGNs) are compared with two independent state-of-the-art efforts, including the hydrodynamic simulation MassiveBlackII (MBII) and a semianalytic model (SAM). After applying an observational selection function to the simulations, we find that both MBII and SAM agree well with the data, in terms of the central distribution. However, the dispersion in the mass ratio between black hole mass and stellar mass is significantly more consistent with the MBII prediction (∼0.3 dex) than with the SAM (∼0.7 dex), even when accounting for observational uncertainties. Hence, our observations can distinguish between the different recipes adopted in the models. The mass relations in the MBII are highly dependent on AGN feedback, while the relations in the SAM are more sensitive to galaxy-merger events triggering nuclear activity. Moreover, the intrinsic scatter in the mass ratio of our high-z sample is comparable with that observed in the local sample, all but ruling out the proposed scenario that the correlations are purely stochastic in nature arising from some sort of cosmic central limit theorem. Our results support the hypothesis of AGN feedback being responsible for a causal link between the SMBH and its host galaxy, resulting in a tight correlation between their respective masses.
Magnetic Field Structure of Orion Source I
Authors: Hirota Tomoya , Plambeck Richard L. , Wright Melvyn C. H. , Machida Masahiro N. , Matsushita Yuko , Motogi Kazuhito , Kim Mi Kyoung , Burns Ross A. , Honma Mareki
Published: June 2020

We observed polarization of the SiO rotational transitions from Orion Source I (SrcI) to probe the magnetic field in bipolar outflows from this high-mass protostar. Both 43 GHz J = 1–0 and 86 GHz J = 2–1 lines were mapped with ∼20 au resolution, using the Very Large Array (VLA) and Atacama Large Millimeter/Submillimeter Array (ALMA), respectively. The 28SiO transitions in the ground vibrational state are a mixture of thermal and maser emission. Comparison of the polarization position angles in the J = 1–0 and J = 2–1 transitions allows us to set an upper limit on possible Faraday rotation of 104 rad m−2, which would twist the J = 2–1 position angles typically by less than 10°. The smooth, systematic polarization structure in the outflow lobes suggests a well-ordered magnetic field on scales of a few hundred au. The uniformity of the polarization suggests a field strength of ∼30 mG. It is strong enough to shape the bipolar outflow and possibly lead to sub-Keplerian rotation of gas at the base of the outflow. The strikingly high fractional linear polarizations of 80%–90% in the 28SiO v = 0 masers require anisotropic pumping. We measured circular polarizations of 60% toward the strongest maser feature in the v = 0 J = 1–0 peak. Anisotropic resonant scattering is likely to be responsible for this circular polarization. We also present maps of the 29SiO v = 0 J = 2–1 maser and several other SiO transitions at higher vibrational levels and isotopologues.
Current sources based on supercapacitors with β-active isotopes
Authors: Stepanov Vladimir A. , Chernov Vladimir A. , Parshikov Yury G. , Lebedev Viktor P. , Kharanzhevskiy Evgeny V.
Published: June 2020

In asymmetric supercapacitors, electric charges are separated and accumulated in conditions of neutron irradiation. The paper presents the results of studying current sources with radioactive isotopes (CSRI) based on supercapacitors of 100 F made by neutron activation of the elements of the substances (BN or SrO) introduced to the electrodes. Following the neutron irradiation with a dose of up to 400 Gy, the supercapacitors turn into CSRIs and have a charging rate of up to 7.8 μV/day. The CSRI charging rate increases in proportion to the activation with a neutron dose up to 14 kGy. This is explained by the production of β-active isotopes as a result of the 14N(n, p)14C and 88Sr(n, γ)89Sr reactions in the supercapacitor electrode materials. Estimation of the radiation-induced charge accumulation rate, with regard for the energy released during β-decay of 14C and 89Sr, excludes the known mechanisms of charge separation in a condensed environment due to the ionization and production of secondary electrons, the production of electron-hole pairs, etc. The electric charge separation and accumulation in CSRIs take place as a result of non-equilibrium thermoelectric phenomena in the near-electrode nanoregions. Nuclear reactions in nanoscale regions produce “temperature gradients” of up to 105 K/nm, this leading to up to 1013 electrons “evaporating” from nanocrystallites at times of ~ 10-11 s.
The effect of early and late pharmacological correction with GABA derivatives of psychoemotional state of offspring of rats with experimental preeclampsia
Authors: Muzyko Elena A. , Perfilova Valentina N. , Suvorin Kirill V. , Tyurenkov Ivan N.
Published: June 2020

Introduction: Preeclampsia is a serious complication of pregnancy, which increases the risk of anxiety disorders and depression in children at different stages of ontogenesis.

Materials and methods: The psychoemotional state of 70-day-old offspring of rats with experimental preeclampsia (EP) was studied after pharmacological correction from the 40th to 70th day of offspring life with GABA derivatives – succicard (22 mg/kg), salifen (7.5 mg/kg), phenibut (25 mg/kg) and comparison drug pantogam (50 mg) – in the Open field test, the Elevated plus maze test, and the Marble burying test. The above mentioned tests, together with the Porsolt test, were performed at the age of 18 months.

At the second step, the offspring received succicard (44 mg/kg), salifen (15 mg/kg), phenibut (50 mg/kg) and pantogam (100 mg) from the 24th to 25th month of life. After that, the animals were tested.

Results and discussion: The EP progeny had an increased level of anxiety and depression, as well as obsessive-com­pulsive disorder.

Early GABA derivatives exposure limited anxiety and depression in the animals aged 70 days and 18 months, with salifen limiting compulsive behavior. Late GABA derivatives “treatment” exerted anti-compulsive and antidepressant effects, with phenibut having a greater degree of anxiolytic activity. Succicard, salifen and phenibut were comparable or superior to pantogam in terms of effectiveness.

Conclusion: EP has a negative effect on the psychoemotional state of offspring. Early and late pharmacological cor­rection with derivatives of GABA, such as succicard, salifen and phenibut, reduced anxiety, manifestations of obses­sive-compulsive disorder, and depression in offspring of the rats with EP pregnancy.
1. Les deux visages de la concurrence
Authors: Beuve Jean
Published: June 2020

La concurrence est supposée avoir un caractère disciplinant sur les comportements des entreprises, les incitant à la performance et à l’innovation. Toutefois, elle peut aussi les inciter à vouloir s’en prémunir en ayant recours à des pratiques dommageables pour les consommateurs et pour la société dans son ensemble. Cela confère alors un rôle capital aux institutions en charge de la garantir.
18. Information, concurrence et régulation
Authors: Fleckinger Pierre
Published: June 2020

La régulation et la politique de la concurrence sont profondément affectées par la digitalisation de l’économie et le pouvoir de marché des géants du numérique. Paradoxalement, la technologie permet maintenant de faire circuler et de traiter la masse d’information nécessaire à une centralisation éclairée, mais elle est contrôlée par un secteur privé concentré, et les méthodes de régulation traditionnelles sont devenues obsolètes. Des méthodes de régulation reposant sur l’influence plutôt que sur la contrainte et les incitations monétaires doivent être inventées, fondées sur les avancées récentes de la microéconomie de l’information.
« Le Congo était fondé dans l’intérêt de la civilisation et de la Belgique ». La notion de civilisation dans la Charte coloniale
Authors: de Broux Pierre-Olivier , Piret Bérengère
Published: June 2020

La « mission civilisatrice » de la Belgique dans ses territoires coloniaux africains est au cœur de la rhétorique coloniale. Leitmotiv de l’action ultramarine depuis la fondation de l’État indépendant du Congo en 1885 et prélude à la plupart des entreprises de colonisation européenne en Afrique au XIX e siècle. Le vocabulaire colonial belge ne s’est donc pas privé d’en faire usage. Toutefois, sa traduction juridique et administrative semble cependant encore peu étudiée. La principale ambition de la présente contribution est dès lors d’interroger cette « mission civilisatrice » au départ de la loi du 18 octobre 1908 sur le gouvernement du Congo belge, usuellement qualifiée de charte coloniale. Plus précisément, cet article vise à identifier la signification de la notion de civilisation telle qu’elle est utilisée par les autorités coloniales au moment de la reprise du Congo par la Belgique ainsi que de repérer les instruments juridiques par lesquels la « mission civilisatrice » doit y être implémentée.
La notion de civilisation en droit colonial belge postérieur à la Seconde Guerre mondiale et en droit congolais postérieur à l’indépendance
Authors: Busane Ruhana Mirindi Wenceslas
Published: June 2020

Le droit colonial belge a organisé des institutions et forgé des règles de mise en œuvre de la mission civilisatrice, principal objectif de l’entreprise coloniale. La présente contribution rend particulièrement compte de l’évolution de la notion de civilisation dans la période postérieure à la Seconde Guerre mondiale, au cours de laquelle intervient la fin de la colonisation. Au cours de cette période, le droit colonial est caractérisé par une conception de civilisation manifestement européo-centrée et héritée du XIX e siècle. Il s’y observe néanmoins une baisse d’intensité de l’affirmation de la mission civilisatrice. Le droit congolais postérieur à l’indépendance, quant à lui, affiche la quête d’une civilisation authentique. Il traduit une tension entre l’instrumentalisation d’un pouvoir autocratique et l’ouverture vers les valeurs de la civilisation universelle.
Présidents de chambres consulaires et politique. Les articulations locales des conflits identitaires et du militantisme patronal en Turquie
Authors: Ressler-Fessy Nicolas , Yankaya Dilek
Published: June 2020

L’article interroge les rapports entre les chambres consulaires et le gouvernement en Turquie, souvent étudiés à l’échelle macro et interprétés comme une relation de domination népotique. En étudiant, à l’échelle micro, les comportements divergents de deux présidents consulaires de deux villes turques lors des élections législatives de 2015, cet article nuance cette hypothèse et montre comment cette relation renvoie à la manière dont le président définit son rôle. Les présidents interrogés conçoivent leur rôle comme celui d’un militant patronal en articulation avec d’autres militantismes identitaires. L’analyse des trajectoires des hommes d’affaires qui occupent cette position met en lumière comment cette définition est le produit d’un processus de notabilisation et de fabrique d’un consensus patronal considéré comme non partisan. L’analyse comparée de leurs engagements pendant les périodes électorales montre comment la mise en pratique de ce rôle dépend des spécificités du cadre de l’interaction dans lequel ils agissent. Cette analyse montre l’articulation des présidents consulaires à un double mécanisme d’injonction : celui de représentation officielle du patronat d’un côté et de gouvernement des particularismes locaux de l’autre. Une articulation qui permet aux présidents consulaires d’entretenir une marge d’autonomie relative dans leurs relations au politique.
Was it all about personalization? The determinants of the vote in the 2016 constitutional referendum in Italy
Authors: Vittori Davide
Published: June 2020

Le référendum constitutionnel italien a marqué un tournant pour le système politique italien. Contrairement au référendum du Brexit, pour lequel une abondante littérature a analysé les différents aspects du comportement électoral, le référendum constitutionnel de 2016 a jusqu’à présent reçu beaucoup moins d’attention. Dans cet article, j’examine dans quelle mesure ce référendum peut être considéré comme une élection de second ordre ou, au contraire, si les convictions politiques ont affecté le choix des électeurs. Tandis que l’hypothèse de l’identification au parti a un faible pouvoir explicatif dans ce cas particulier, la personnalisation peut être considérée une procuration du choix de l’électeur pour punir ou récompenser le gouvernement en place.
Knowledge Base of Nurses Before and After a Human Trafficking Continuing Education Course
Authors: Lawrence Madelaine , Bauer Paul
Published: June 2020

Background:

Recent research shows up to 88% of human trafficking victims are seen in a health care setting sometime during their coerced servitude. Nurses are in key positions to identify trafficked victims but often lack sufficient information about how to assess and report trafficked victims.

Method:

This article includes participant data from one presurvey and two postsurveys from a human trafficking continuing education course.

Results:

Data demonstrate a precourse knowledge base deficit about human trafficking. The postcourse surveys indicated that participants had increased knowledge and desire to implement the course information to identify trafficked individuals.

Conclusion:

Nurses learning about human trafficking through continuing education courses can be invaluable in identifying and helping trafficked victims.

[
J Contin Educ Nurs
. 2020;51(7):316–321.]
An Unusual Presentation of a Dermoid Cyst Mimicking a Chalazion
Authors: Wadhwani Meenakshi , Kursange Shubhangi , Singh Lavleen , Khanam Sadia
Published: June 2020

The authors report the case of a 6-year-old boy who presented to their outpatient department with complaints of progressively increasing swelling on the left upper eyelid since birth. The swelling was excised and was found to be firmly attached to the tarsus. Histopatho-logical examination reported a cyst lined by stratified squamous epithelium with presence of adnexal structures in the subepithelium. Therefore, the diagnosis of tarsal dermoid cyst was made.

[
J Pediatr Ophthalmol Strabismus
. 2020;57:e41–e42.]
Lire le matérialisme
Authors: T. Wolfe Charles
Published: June 2020

Ce livre étudie, à travers une série d’épisodes allant de la philosophie des Lumières à notre époque, le problème du matérialisme dans l’histoire de la philosophie et l’histoire des sciences. Comment comprendre les spécificités de l’histoire du matérialisme, des Lumières à nos jours, au sein de la grande histoire de la philosophie et de l’histoire des sciences ? Quelle est l’actualité de l’opposition classique entre le corps et l’esprit ? Qu’est-ce que le rire ou le rêve peuvent nous apprendre du matérialisme ? En traversant l’histoire du matérialisme jusqu’à l’émergence d’un « nouveau matérialisme » contemporain, l’ouvrage vise à revitaliser le matérialisme et sa lecture.
Construction de l’authenticité et expérience patrimoniale. Conception et réception de la réplique de la grotte Chauvet - Pont d’Arc
Authors: Duval Mélanie , Gauchon Christophe , Malgat Charlotte
Published: June 2020

Dans le champ des patrimoines culturels, le recours à des copies, partielles ou intégrales, donne aux visiteurs la possibilité de voir et d’accéder à des objets ou des lieux difficiles d’accès, voire fermés. Dans le cas des grottes ornées, où les copies sont réalisées dans un souci de perfection, avec la volonté de restituer des images et de transmettre les émotions que les visiteurs auraient devant les peintures originales, les questions de l’authenticité et de l’expérience patrimoniale se posent. Quels sont les procédés mobilisés par les concepteurs en vue de faire éprouver l’authenticité ? Dans quelle mesure le dispositif scénographique déployé conduit-il les visiteurs à faire une expérience authentique de ce qui fait patrimoine ? Cette problématique de la construction de l’authenticité et de l’expérience patrimoniale sera travaillée à partir de l’analyse de la réplique de la grotte Chauvet - Pont d’Arc, située à proximité de l’originale dans le sud Ardèche (France). Après avoir discuté la place de l’authenticité et de l’expérience dans ce qui fait patrimoine, l’article analyse les modalités de construction puis de réception de la fiction élaborée, en observant dans quelle mesure les visiteurs se laissent prendre au jeu du « demi-croire » (Lambert, 2013) et de l’enchantement proposé par les concepteurs (Winkin, 1998, 2001). In fine, ces réflexions dépassent la seule thématique des grottes ornées et amènent à reformuler la place de l’expérientiel dans la construction d’un rapport patrimonial (Tornatore, 2019).
High-Performance Computing Using FPGAs for Improving the DTC Performances of Induction Motors
Authors: Krim Saber , Mimouni Mohamed Faouzi
Published: June 2020

The conventional direct torque control (DTC) of induction motors has become the most used control strategy. This control method is known by its simplicity, fast torque response, and its lack of dependence on machine parameters. Despite the cited advantages, the conventional DTC suffers from several limitations, like the torque ripples. This chapter aims to improve the conventional DTC performances by keeping its advantages. These ripples depend on the hysteresis bandwidth of the torque and the sampling frequency. The conventional DTC limitations can be prevented by increasing the sampling frequency. Nevertheless, the operation with higher sampling frequency is not possible with the software solutions, like the digital signal processor (DSP), due to the serial processing of the implemented algorithm. To overcome the DSP limitations, the field programmable gate array (FPGA) can be chosen as an alternative solution to implement the DTC algorithm with shorter execution time. In this chapter, the FPGA is chosen thanks to its parallel processing.
Pedagogical Adaptations for Teaching Transitory Jail Populations
Authors: Bulcock Jennifer A. , Farina Katie A.
Published: June 2020

This chapter introduces and examines how an instructor can successfully teach a college-level course in a jail facility. In contrast to a prison environment, the transitory nature of a jail population results in a different set of challenges that an instructor must address in order to lead a successful class. The authors were trained within the Inside-Out Prison Exchange Program but have had to adapt this pedagogy to suit a jail environment. The chapter discusses the authors' process of creating their course and provides best practices on how to remain creative and flexible in order to overcome and adapt to the unique experiences inherent in a jail setting. Additionally, the authors have provided their syllabus, sample assignments, and an example of a typical class session to help inspire and support others who are interested in teaching in a jail facility. The chapter is not specific to Inside-Out courses though some of the pedagogical tenets of Inside-Out influence the recommendations of the authors.
Fostering Change, Transforming Learning
Authors: Reitenauer Vicki L. , Cates Rhiannon M. , Hall Benjamin J.
Published: June 2020

This is a chapter in which a currently incarcerated student/teaching assistant; a university staff member/former student/teaching assistant; and an instructor of women, gender, and sexuality studies collaboratively examine how the curricular approaches and pedagogical strategies utilized in the course “Writing as Activism,” taught inside a correctional facility, embody and enact the liberatory and transformative potential of prison-based teaching and learning. The authors review a selection of individual and collaborative assignments, activities, and writing exercises, as well as the faculty member's philosophy and practice of self-grading as a mechanism to relocate power and foster accountability. This chapter concludes with instructions for activities and accompanying materials used in this course, including the syllabus, for educators to refer to and adapt for their own use in (carceral) spaces of learning.
Best Practices in Dropout Prediction
Authors: Alcolea Juan J. , Ortigosa Alvaro , Carro Rosa M. , Blanco Oscar J.
Published: June 2020

This chapter focuses on the key practical aspects to be considered when facing the task of developing predictive models for student learning outcomes. It is based on the authors' experience building and delivering dropout prediction models within higher education contexts. The chapter presents the information used to generate the predictive models, how this information is treated, how the models are fed, which types of algorithms have been used, and why and how the obtained results have been evaluated. It recommends best practices for building, training, and evaluating predictive models. It is hoped that readers will find these recommendations useful for the design, development, deployment, and use of early warning systems.
Patient Preparation and Positioning on Robot-Assisted and Robotic Surgeries
Authors: Vasilopoulos Charalambos Rafail , Dedousis Dimitrios , Klavdianos John , Deligiorgis Konstantinos , Anastasiou Athanasios
Published: June 2020

The field of robotic surgery is being developed and is increasingly being applied to many and different surgical procedures. This results in the need of looking for different patient placements, which will give the surgeon the best view of the area of clinical interest. The purpose of this paper is to study and investigate the various ways of patient preparation and positioning in the field of robotic surgery. Also, this paper proposes a classification and comparing between these different positions, depending on the procedure.
Ensemble Model for the Risk of Anemia in Pediatric Patients With Sickle Cell Disorder
Authors: Balogun Jeremiah Ademola , Asinobi Adanze O. , Olaniyi Olawale , Adegoke Samuel Ademola , Oladeji Florence Alaba , Idowu Peter Adebayo
Published: June 2020

Anemia is a major cause of morbidity and mortality of SCD patients in many parts of the world with the burden much higher in Sub Saharan Africa. This study developed an ensemble of machine learning algorithm for the prediction of the risk of anemia in pediatric SCD patients. Data for this study was collected from 115 pediatric SCD outpatients receiving treatment at a tertiary hospital in South-Western Nigeria. This study adopted a stack-ensemble model composed of deep neural network (DNN), multi-layer perceptron (MLP), and support vector machines (SVM) as base and meta-classifiers using the WEKA software. The ensemble models were compared following the stack-ensemble developed using SVM as a meta-classifier had the best performance with an accuracy of 72.7%. The study concluded that information about socio-demographic and clinical data can be used to assess the risk of anemia among SCD patients.
Political Cyber Operations
Authors: Warren Matthew
Published: June 2020

Social media impacts all aspects of society from citizens to businesses, but also political parties. The article proposes a new social media engagement model that evaluates political cyber operations and the success of such campaigns during elections. The article will use the Cook Islands 2018 general election to validate the model.
Synthesis of Zeolite Catalyst from Geothermal Solid Waste for Crude Glycerol Dehydration to Acrolein
Authors: Widayat  , Philia John , Farsha Thariq , Rifaldi Fahmi
Published: June 2020

Limited reserves of conventional fossil fuels have led people to come up with alternative fuels. Biodiesel is one of the alternative fuels that mostly produced nowadays. Glycerol as byproduct of biodiesel production can be converted to acrolein trough dehydration reaction. Acrolein is an important intermediate for the production of chemicals product and also used for agricultures. Application of various catalyst in glycerol dehydration to acrolein has been reported. Zeolite is a micro-porous, alumino-silicate mineral that can be used as catalyst for this reaction. Geothermal solid waste contains silica that can be used as zeolite catalyst raw material. In this research, zeolite catalyst was synthesized from geothermal solid waste in hydrothermal reactor at 150°C for 8 hours. The catalyst product was characterized by EDX and showed that the zeolite catalyst was analcime type. BET characterization showed that this catalyst has mesoporous surface area. Catalyst application on glycerol dehydration was occurred in fixed-bed stainless steel reactor. This process produced liquid product and analysed by FT-IR. The FT-IR result showed that the liquid product contains acrolein. The variation amount of catalyst in dehydration process affect to the glycerol conversion. The increasing of catalyst amount enhanced glycerol conversion.
Production of Bio-Crude Oil from Microalgae Chlorella sp. Using Hydrothermal Liquefaction Process
Authors: Bawono Aldeniro Arief , Adhisatrio Hisyam , Prasakti Laras , Pradana Yano Surya
Published: June 2020

Currently, microalgae have attracted as potential feedstock for biofuel production. Hydrothermal liquefaction was proposed as technology to convert microalgae into bio-crude oil. Microalgae used in this study was Indonesia-cultivatedChlorellasp.,This work investigated the effect of temperature (200°C, 225°C, 250°C), biomass weight-water ratio (1:20, 2:20, 3:20), and residence time (10, 20, 30 minutes) on bio-crude oil yield of non-catalytic hydrothermal liquefaction. The highest bio-crude oil yield was 2.25%, obtained at temperature of 250°C biomass weight-water ratio of 1:20, and residence time of 10 minutes. The highest component of bio-crude oil was alcohols. The low bio-crude oil yield was caused by the longer residence time of cooling step (driving gas conversion), low amount of carbon-hydrogen content and high amount of oxygen-ash content in biomass. Furthermore, the highest component of bio-crude oil was alcohols, stimulated by low carbon content coupled with high oxygen content inChlorellasp.
Paraurethral cyst in a newborn
Authors: Ergun Raziye , Yildiz Duran , Sekerci Cagri Akin , Kahveci Hasan
Published: June 2020

Paraurethral cysts are rare and occur with obstruction of the Skene duct. In this case, we aimed to present a paraurethral cyst in a baby girl. A 4-day-old newborn was consulted for pediatric urology because of an interlabial mass. In genital examination, a noninvasive mass measuring 2 × 1.5 cm was observed in the interlabial region, and the introitus was completely closed. Ultrasonography showed a cystic lesion localized on the right side of the urethra with a smoothly contoured, thin-walled, hypoechoic structure. The patient underwent puncture under sterile conditions. The content of the mass was mucoid and clear fluid. Paraurethral cysts are often asymptomatic and benign. There is no definitive consensus on treatment.
Italian suggestions for pulmonary rehabilitation in COVID-19 patients recovering from acute respiratory failure: results of a Delphi process
Authors: Vitacca Michele , Lazzeri Marta , Guffanti Enrico , Frigerio Pamela , D’Abrosca Francesco , Gianola Silvia , Carone Mauro , Paneroni Mara , Ceriana Piero , Pasqua Franco , Banfi Paolo , Gigliotti Francesco , Simonelli Carla , Cirio Serena , Rossi Veronica , Beccaluva Chiara G. , Retucci Mariangela , Santambrogio Martina , Lanza Andrea , Gallo Francesca , Fumagalli Alessia , Mantero Marco , Castellini Greta , Calabrese Mariaconsiglia , Castellana Giorgio , Volpato Eleonora , Ciriello Marina , Garofano Marina , Clini Enrico , Ambrosino Nicolino , ARIR, SIP, AIFI and SIFIR On behalf of AIPO,
Published: June 2020

There is a need of consensus about the pulmonary rehabilitation (PR) in patients with COVID-19 after discharge from acute care. To facilitate the knowledge of the evidence and its translation into practice, we developed suggestions based on experts’ opinion. A steering committee identified areas and questions sent to experts. Other international experts participated to a RAND Delphi method in reaching consensus and proposing further suggestions. Strong agreement in suggestions was defined when the mean agreement was >7 (1 = no agreement and 9 = maximal agreement). Panelists response rate was >95%. Twenty-three questions from 4 areas: Personnel protection equipment, phenotypes, assessments, interventions, were identified and experts answered with 121 suggestions, 119 of which received high level of concordance. The evidence-based suggestions provide the clinicians with current evidence and clinical experts opinion. This framework can be used to facilitate clinical decision making within the context of the individual patient. Further studies will evaluate the clinical usefulness of these suggestions.
Effectiveness of a Conservation Energy Model for Febrile Neutropenia in Children with Cancer
Authors: Khoirunnisa Khoirunnisa , Allenidekania Allenidekania , Hayati Happy
Published: June 2020

Febrile neutropenia is a complication of chemotherapy that occurs in children with cancer. This paper aimed to provide an overview of the application of the Levine Energy Conservation Model for treating fever neutropenia in children with cancer. The method involved a case study of five children with cancer treated for febrile neutropenia using the nursing process approach. The nursing process, according to the Levine Energy Conservation Model, focuses on increasing the body’s adaptability through four forms of conservation, namely, the conservation of energy, personal integrity, structural integrity, and social integrity. Trophicognosis in the five cases under management identified hyperthermia and the risk of infection transmission. Other nursing problems were nutritional imbalances that were less than the body’s needs and the risk of bleeding. These problems can hinder the process of adapting children with cancer to the challenges of disease and the treatment of side effects in achieving self-integrity.
Grigorchuk–Gupta–Sidki groups as a source for Beauville surfaces
Authors: Gül Şükran , Uria-Albizuri Jone
Published: June 2020

If

G

is a Grigorchuk–Gupta–Sidki group defined over a

p

-adic tree, where

p

is an odd prime, we study the existence of Beauville surfaces associated to the quotients of

G

by its level stabilizers

\mathrm {st}_G(n)

. We prove that if

G

is periodic then the quotients

G/\mathrm {st}_G(n)

are Beauville groups for every

n\geq 2

if

p\geq 5

and

n\geq 3

if

p = 3

. In this case, we further show that all but finitely many quotients of

G

are Beauville groups. On the other hand, if

G

is non-periodic, then none of the quotients

G/\mathrm {st}_G(n)

are Beauville groups.
The word and order problems for self-similar and automata groups
Authors: Bartholdi Laurent , Mitrofanov Ivan
Published: June 2020

We prove that the word problem is undecidable in functionally recursive groups, and that the order problem is undecidable in automata groups, even under the assumption that they are contracting.
Закон нуля или единицы первого порядка для равномерной модели случайного графа
Authors: Zhukovskii Maksim Evgen'evich , Sveshnikov Nikita Maksimovich
Published: June 2020

Рассматривается случайный граф Эрдeша-Реньи в равномерной модели $G(n,m)$, где $m=m(n)$ - такая последовательность целых неотрицательных чисел, что $m(n)\sim cn^{\alpha}<(2-\varepsilon)n^2$ для некоторых $c>0$, $\alpha\in[0,2]$ и $\varepsilon>0$. Доказано, что $G(n,m)$ подчиняется закону нуля или единицы для языка первого порядка тогда и только тогда, когда либо $\alpha\in\{0,2\}$, либо $\alpha$ иррационально, либо $\alpha\in(0,1)$ и $\alpha$ не принадлежит множеству чисел вида $1-1/\ell$, $\ell\in\mathbb{N}$.
Библиография: 15 названий.
Persuasive communication on the Facebook account of the “Alternative für Deutschland” Saxony
Authors: Rentel Nadine
Published: June 2020

Recent surveys and political research have shown that the acceptance of the political programmes of populist parties, such as the “Alternative für Deutschland (AfD)”, is relatively high amongst the population of the three eastern German federal states, especially in Saxony, where the AfD won nine of the 13 rural districts during the local elections in May 2019. Thus, it seems relevant to take a closer look at the persuasive discourse of a so-called populist party. In its public discourse, the AfD responds to the fears and concerns of those people who tend to use social media platforms to gain information when making political decisions. The aim of the article is to show which verbal and visual resources characterize the persuasive discourse of the AFD Saxony on their Facebook account. For this purpose, we propose a qualitative, multimodal analysis of selected entries which the party uploaded on its Facebook account between November 2018 and March 2019.
Mahmoud Darwish and Tanure Ojaide
Authors: Mohammad Ghada A. , Abdulaali Wafaa A.
Published: June 2020

Darwish, the spokesman of Palestine, and Ojaide, the voice of Nigeria, are endowed with a faculty for articulating a message, a vision or an opinion for their nations. They are intellectuals essentially tied to the needs of their communities. Both poets belong to countries that witnessed different types of political, economic, and social turmoil. They inspire the oppressed nations to persist in their struggles against the regimes which deprive them of their right to live happily and peacefully. Darwish experienced many displacements that turned him into an embodiment of exile, in both existential and metaphysical terms, beyond the external, and the metaphorical, in his interior relations with self and poetry. His poetry of exile mirrors the socio-political atmosphere under the Israeli occupation. He utilizes poetry as a weapon in his fight to achieve freedom and independence. Similarly, Ojaide’s poetry is engaged with the crises of his homeland, the Niger Delta. He belongs to the generation of Nigerian writers who used their literary productions as a weapon against social injustice and an instrument in resisting imperialism. To him, there is a direct relationship between literature and social institutions. The principal function of literature is to criticize these institutions and eventually bring about desirable changes in society. This study aims at examining Darwish and Ojaide as poets of exile by observing their exilic experiences and investigating certain poems that typically help dive into their external and internal sense of displacement. The study also highlights the concepts of home and homelessness. It brings to light the poets’ deep yearning for a sense of belonging and their insistence on regaining the motherland toward which they show a profound attachment and permanent commitment. They use words as a therapeutic means to compensate for the lack of a physical homeland. A comparison between the two poets is also provided.
Bureaucratic Accountability and Public Sector Management in Nigeria: Examining the Issues, Challenges and the Way Forward
Authors: Igbokwe-Ibeto C.J. , Osakede K.O. , Nwobi F.
Published: June 2020

The main objective the public sector in Nigeria seeks to achieve is policy initiation, formulation and implementation for the well-being and welfare of the citizens. However, over the years, the sector has been plagued with declining service delivery and moral bankruptcy. This article within the framework of social exchange theory examined the dynamics of bureaucratic accountability, the nexus between bureaucratic accountability and public sector management in Nigeria. It is usually the public that suffers from a malfunctioning public service. Nigerian citizens look up to public servants for protection against various ills in the society and the provision of essential services. If the involvement of public servants in the political, economic and social life of the country is considered, we shall better appreciate the needed urgency in making the service accountable for its actions. It argues that for Nigeria to match forward, there is need for effective, efficient, patriotic and committed public servants, who should be accountable for their stewardship. The article recommends that unless the Nigeria public sector is revitalized and "dead woods" therein removed, Nigeria and Nigerian will continue to experience deep-seated frustrations in the often-touted desire to move the nation forward.

Key Words: Accountability, bureaucracy, government, service delivery, patriotic
The Effect of Agricultural Training on Youth Farm Entrepreneurial Attitudes: Evidence from Folk Development Colleges in Tanzania
Authors: Nade Paschal Banga
Published: June 2020

Given the paucity of youth employment opportunities in the non-agricultural formal sector in developing countries much more needs to be done to attract youth into the agricultural sector. The main objective of this paper was to assess the influence of the agricultural training on youth farm entrepreneurial attitudes. A cross-sectional design was employed and 300 respondents were randomly selected from three Folk Development Colleges (FDCs). The data were analysed using descriptive and inferential statistics. The findings show that youth have favourable attitudes towards farm entrepreneurship. Furthermore, a significant difference was found in terms of farm entrepreneurial attitude across sex, age groups, college and programme studied. It is concluded that training in colleges where agricultural courses are blended with an entrepreneurship course have positive influence on youth attitude towards farm entrepreneurship. It is generally recommended that more theoretical components on the socio-economic benefits of farm entrepreneurship need to be added to the existing curriculum.

Key Words: Courses, entrepreneurial attitude, intention, unemployment
Parental Involvement: A Response to Children with Disability’s Education
Authors: Mantey Efua Esaaba
Published: June 2020

Drawing on the fact that education of children is a human right issue, the study explored parent’s involvement in the education of their children with disabilities. Using quantitative research methodology, 166 respondents were sampled from two selected basic schools in Koforidua, Ghana. Results indicated that, often the demand on parents such as time, work, house chores, and many other commitments impede their preference to be involved in their children’s education. The school activities most parents involved themselves in are the Parent Teachers Association’s (P.T.A.) meetings. This is because parents do not see themselves as having interest in many of the other activities children in school are involved in. Equally, though some parents from poor background may want to educate their child with disability, the cost involved in educating the child is high. Evidence showed that there was a moderate level of parents’ involvement in the education of their children with disability and that the level of involvement is associated with the socio-economic status of such parents. The study concluded that parental involvement in their children with disabilities education leads to positive learning outcomes and academic achievements. It was recommended among others that parents should get involved in decisions concerning the education of their children with disability; parents must honour invitations from schools and speak with school staff and teachers. Again, parents should disabuse their minds of the perceptions that taking their child with disability to school is of no benefit and a waste of resources.

Key Words: Parents, children with disabilities, education
A survey of Zodariidae (Araneae) from Nigeria
Authors: Nwankwo O.D. , Ewuim S.C. , Okoye E.L.
Published: June 2020

No Abstract.
Attitude, perception and knowledge of menopause by women Ofkumana Chiefdom Kauru Local Government Area, Kaduna State, Nigeria
Authors: Tanko M. , Danborno B. , Timbuak J.A. , Sadeeq A.A. , Bauchi Z.M.
Published: June 2020

No Abstract.
Studies on proximate and mineral contents of extruded  Nakiya from blends of rice and groundnut
Authors: Jibril H. , Filli K.B. , Adamu M.A.
Published: June 2020

No Abstract.
Effect of chemical treatment of neem leaf on biosorption of Copper(II) Ions from aqueous solution
Authors: Sulaiman M.S.
Published: June 2020

No Abstract.
Sex and age related variations in somatotype of ethnic Hausa adolescents' from Zaria, north-west Nigeria
Authors: Mustapha M , Adamu A.A. , Dahiru A.U. , Maryam M.
Published: June 2020

No Abstract.
Terror thrillers and tradition: a postcolonial reading of selected African cinema
Authors: Ihidero Victor Osae
Published: June 2020

Nigeria, Kenya and Somalia are few of the countries in Africa faced with terrorism and militancy. The rise and expansion of terrorist groups such as Al-Shabaab, Boko Haram, the Niger-Delta Volunteer Force, the Islamic State West Africa Province (ISWAP) and recently, the Avengers, has risen to vent terror on the peoples of Nigeria, Kenya and Somalia. Whilst each of these countries has its own distinct challenges that led to the formation of such terrorist groups, the emergence of terrorism in Nigeria remains complex. One of the ways an explicit explanation has been given to these complexes in Nigeria is through thriller fiction. Nollywood as well as other film industries in Africa has produced several thriller fictions that attempt to explicate the reasons behind militancy and terrorism in Africa. October 1 and Eye in the Sky are two examples of African cinema that have attempted to film the recent rise of terrorism in Nigeria and Kenya. Within the lens of October 1, terrorism in Nigeria, and by extension Africa, is rooted on ethnic and religious divide fuelled by external contact with other cultures; in this case, the culture of imperial England. This study, using the premise of postcolonial reading, examined Kunle Afolayan's award winning terror thriller, October 1 and attempted to bring out the powercultural interplay that bred terrorism in Nigeria. The study found out that the ideology of Boko Haram ("Western education is a sin") terrorist group, as bad as it seems, is a postcolonial stance against [neo]colonialism. However, the ideology lost its steam because it failed to reassert the Nigerian humanity or show any humanist tendencies to reclaiming the African glorious past.

Keywords: Terror thriller, Traditionality, African cinema, Postcoloniality, Terrorism
Trends in media framing of industrial crises reporting: implication for media research in Nigeria
Authors: Adeyemo Julius Abioye , Elegbe Olugbenga
Published: June 2020

There has been a scholarly argument among media researchers on how best media analysts should study media perspectives on industrial crisis reporting with reference to research methods, theoretical perspectives and methods of data analysis. Content analysis and meta-analytical approach were employed to gather data from published scholarly articles and theses accessed online. One hundred and fifteen (115) studies were content analyzed, collated and identified based on those that focused their issues on media framing of labour crisis. Evidence from the studies analysed shows that the content analysis and in-depth interviews were predominantly adopted for media representations of industrial crisis, the mixed method research were adopted for data collection while media framing, agenda setting and the priming theories were mostly adopted by most of the studies. It is recommended that studies should employ critical discourse analysis to compliment researchers’ effort to examine how different ideological stances are mediated in the media to reflect social-political dominance, inequality and class struggle that characterize industrial crisis.

Keywords: Industrial crisis reporting, Media framing, Research trends, Discourse analysis, Nigeria
The iconoclastic theatre: transgression in Christopher Marlowe’s Tamburlaine
Authors: Alqadumi Emad A.
Published: June 2020

This article examines Christopher Marlowe’s iconoclasm as a dramatist by probing transgressive features in his Tamburlaine the Great, parts I and II. By depicting instances of excessive violence, from the perspective of this study, Marlowe flouts everything his society cherishes. His Tamburlaine demystifies religious doctrines and cultural relations; it challenges the official view of the universe and customary theatrical conventions of Renaissance drama. It destabilizes the norms and values of the Elizabethans and brings about a crisis between the Elizabethan audience and their own culture. Furthermore, Marlowe’s experimentalism in Tamburlaine expands the imaginative representations to include areas never formerly visited, consequently creating an alternative reality for his audience and transforming the popular English theatre in an unprecedented manner.

Keywords: Drama, Christopher Marlowe, Elizabethan theatre, Literature, Iconoclasm