bluuebunny/crossref_metadata_2025 huggingface dataset:
DEVELOPMENT OF DISC THROWING EXERCISE MODEL FOR BEGINNERS
Authors: Refiater Ucok Hasian , Haryanto Arief Ibnu
Published: September 2022

This research aims to develop a discus throwing exercise model for beginners. This study has a population of 10 beginner discus throwers at the Gorontalo State University. The novelty in this research is research related to the development of the disc flash exercise model for beginners. The method used in this research is development research adopted by the ADDIE model development research design. The place for conducting this research is the field of Campus 3, State University of Gorontalo. Data were collected by observation, interviews, and questionnaires. The stages of data collection are carried out in the early stages, which consist of five stages starting Analysis, Design, Development, Implementation, and Evaluating. The results of the study prove that from the results of the evaluation of athletic experts, it was obtained that this product as a whole met the eligibility criteria so that it could be used in the next stage of research. The conclusion is seen and proven that the development of this discus throwing exercise model is effective in increasing the throwing results.Keywords: developme; disc throwing; exercise model.
Assessment Quality at two Ethiopian Universities: Requirements versus Practices
Authors: Aga Firdissa
Published: September 2022

The purpose of this study was to examine the extent to which learning assessment practices fulfill assessment quality requirements. Two sorts of questionnaires were used to collect data from teachers/researchers, and MA/MSC and PhD students of Education and English Language at two Ethiopian universities. The results have shown that assessment tasks, contents, tools and procedures at the universities hardly fulfilled some desirable assessment requirements including making assessment tasks and contents free from all kinds of biases, mirroring the required skills/knowledge in real life, empowering teachers to assess what they value, encouraging deep approaches to learning, and guaranteeing learners' awarded grades to represent the levels. Some assessment tools, procedures, and practices also failed to fulfill assessment quality requirements. It has, therefore, been recommended that all parties should make utmost conscious efforts to ascertain alignment of assessment practices, procedures and contents with available theories/requirements on learning assessment quality.
Tentative Evidence for Water Vapor in the Atmosphere of the Neptune-sized Exoplanet HD 106315c
Authors: Kreidberg Laura , Mollière Paul , Crossfield Ian J. M. , Thorngren Daniel P. , Kawashima Yui , Morley Caroline V. , Benneke Björn , Mikal-Evans Thomas , Berardo David , Kosiarek Molly R. , Gorjian Varoujan , Ciardi David R. , Christiansen Jessie L. , Dragomir Diana , Dressing Courtney D. , Fortney Jonathan J. , Fulton Benjamin J. , Greene Thomas P. , Hardegree-Ullman Kevin K. , Howard Andrew W. , Howell Steve B. , Isaacson Howard , Krick Jessica E. , Livingston John H. , Lothringer Joshua D. , Morales Farisa Y. , Petigura Erik A. , Rodriguez Joseph E. , Schlieder Joshua E. , Weiss Lauren M.
Published: September 2022

We present a transmission spectrum for the Neptune-sized exoplanet HD 106315c from optical to infrared wavelengths based on transit observations from the Hubble Space Telescope/Wide Field Camera 3, K2, and Spitzer. The spectrum shows tentative evidence for a water absorption feature in the 1.1–1.7 μm wavelength range with a small amplitude of 30 ppm (corresponding to just 0.8 ± 0.04 atmospheric scale heights). Based on an atmospheric retrieval analysis, the presence of water vapor is tentatively favored with a Bayes factor of 1.7–2.6 (depending on prior assumptions). The spectrum is most consistent with either an enhanced metallicity or high-altitude condensates, or both. Cloud-free solar composition atmospheres are ruled out at >5σ confidence. We compare the spectrum to grids of cloudy and hazy forward models and find that the spectrum is fit well by models with moderate cloud lofting or haze formation efficiency over a wide range of metallicities (1–100× solar). We combine the constraints on the envelope composition with an interior structure model and estimate that the core mass fraction is ≳0.3. With a bulk composition reminiscent of that of Neptune and an orbital distance of 0.15 au, HD 106315c hints that planets may form out of broadly similar material and arrive at vastly different orbits later in their evolution.
On Planet Formation around Supermassive Black Holes and Grain Disruption Barriers by Radiative Torques
Authors: Giang Nguyen Chau , Hoang Thiem , Tram Le Ngoc , Dieu Nguyen Duc , Diep Pham Ngoc , Phuong Nguyen Thi , Tuan Bui Van , Truong Bao
Published: September 2022

It has recently been suggested that planets can form by dust coagulation in the tori of active galactic nuclei (AGN) with low luminosities of L
bol ≲ 1042 erg s−1, constituting a new class of exoplanets orbiting supermassive black holes called blanets. However, large dust grains in the AGN torus may be rotationally disrupted by the radiative torque disruption (RATD) mechanism due to AGN radiation feedback, which would prevent blanet formation. To test this scenario, we adopt a simple smooth and a clumpy dust/gas distribution inside the torus region to study the effect of RATD on the evolution of composite dust grains in the midplane of the torus. We found that grain growth and then blanet formation are possible in the smooth torus model. However, in the clumpy torus model, grain growth will be strongly constrained by RATD, assuming the gas density distribution as adopted by Wada et al. We also found that icy grain mantles inside clumps are quickly detached from the grain cores by rotational desorption, reducing the sticking coefficient between icy grains and the coagulation efficiency. The grain rotational disruption and ice desorption occur on timescales much shorter than the growth time up to a factor of ∼104, which are the new barriers that grain growth must overcome to form blanets. Further studies with more realistic AGN models are required to constrain better the effect of RATD on grain growth and blanet formation hypothesis around low-luminosity AGN.
Measuring the β-decay Properties of Neutron-rich Exotic Pm, Sm, Eu, and Gd Isotopes to Constrain the Nucleosynthesis Yields in the Rare-earth Region
Authors: Kiss G. G. , Vitéz-Sveiczer A. , Saito Y. , Tarifeño-Saldivia A. , Pallas M. , Tain J. L. , Dillmann I. , Agramunt J. , Algora A. , Domingo-Pardo C. , Estrade A. , Appleton C. , Allmond J. M. , Aguilera P. , Baba H. , Brewer N. T. , Bruno C. , Caballero-Folch R. , Calvino F. , Coleman-Smith P. J. , Cortes G. , Davinson T. , Fukuda N. , Ge Z. , Go S. , Griffin C. J. , Grzywacz R. K. , Hall O. , Horváth A. , Ha J. , Harkness-Brennan L. J. , Isobe T. , Kahl D. , King T. T. , Korgul A. , Kovács S. , Krücken R. , Kubono S. , Labiche M. , Liu J. , Liang J. , Madurga M. , Miernik K. , Molina F. , Morales A. I. , Mumpower M. R. , Nacher E. , Navarro A. , Nepal N. , Nishimura S. , Piersa-Siłkowska M. , Phong V. , Rasco B. C. , Rubio B. , Rykaczewski K. P. , Romero-Barrientos J. , Sakurai H. , Sexton L. , Shimizu Y. , Singh M. , Sprouse T. , Sumikama T. , Surman R. , Suzuki H. , Szegedi T. N. , Takeda H. , Tolosa A. , Wang K. , Wolinska-Cichocka M. , Woods P. , Yokoyama R. , Xu Z.
Published: September 2022

The β-delayed neutron-emission probabilities of 28 exotic neutron-rich isotopes of Pm, Sm, Eu, and Gd were measured for the first time at RIKEN Nishina Center using the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array. The existing β-decay half-life (T
1/2) database was significantly increased toward more neutron-rich isotopes, and uncertainties for previously measured values were decreased. The new data not only constrain the theoretical predictions of half-lives and β-delayed neutron-emission probabilities, but also allow for probing the mechanisms of formation of the high-mass wing of the rare-earth peak located at A ≈ 160 in the r-process abundance distribution through astrophysical reaction network calculations. An uncertainty quantification of the calculated abundance patterns with the new data shows a reduction of the uncertainty in the rare-earth peak region. The newly introduced variance-based sensitivity analysis method offers valuable insight into the influence of important nuclear physics inputs on the calculated abundance patterns. The analysis has identified the half-lives of 168Sm and of several gadolinium isotopes as some of the key variables among the current experimental data to understand the remaining abundance uncertainty at A = 167–172.
A Partial-sky Gibbs ILC Approach for the Estimation of CMB Posterior over Large Angular Scales of the Sky
Authors: Sudevan Vipin , Purkayastha Ujjal , Saha Rajib
Published: September 2022

In this article we present a formalism for incorporating the partial-sky maps into the Gibbs ILC algorithm to estimate the joint posterior density of the cosmic microwave background (CMB) signal and the theoretical CMB angular power spectrum given the observed CMB maps. In order to generate the partial-sky maps, we mask all the observed CMB maps provided by the WMAP and Planck satellite full-sky mission using a mask that removes 22% of the entire sky. The mask we use is based on the strength of the thermal dust emissions in the Planck 353 GHz map. While implementing the Gibbs ILC method on the partial-sky maps, we convert the partial-sky-cleaned angular power spectrum into the full-sky angular power spectrum using the mode-mode coupling matrix estimated from the smoothed mask. The main products of our analysis are a partial-sky cleaned best-fit CMB map and an estimate of the underlying full-sky theoretical CMB angular power spectrum in the multipole range 2 ≤ ℓ ≤ 32 along with their error estimates. We validate the method by performing detailed Monte Carlo simulations after using realistic models of foregrounds and detector noise consistent with the WMAP and Planck frequency channels used in our analysis. We can estimate the posterior density and full-sky theoretical CMB angular power spectrum without any need to explicitly model the foreground components from partial-sky maps using our method. Another important feature of this method is that the power spectrum results along with the error estimates can be directly used for cosmological parameter estimations.
The Closest Past Flyby of a Known Star to the Solar System: HD 7977, UCAC4 237-008148 or WISE J072003.20-084651.2?
Authors: de la Fuente Marcos Raúl , de la Fuente Marcos Carlos
Published: September 2022

It is argued that the closest past flyby of a known star to the solar system was that of Scholz’s star (WISE J072003.20-084651.2). Here, we show that the distribution of distances of closest approach of this star has a median value of 0.330 pc with a 90% probability of coming within 0.317–0.345 pc of the Sun; the associated time of perihelion passage is determined to be between 78.6–81.1 kyr ago with 90% confidence, with a most likely value of 79.9 kyr. Using Gaia DR3 data and the latest planetary ephemerides, we found that UCAC4 237-008148 (RUWE = 0.927) approached even closer with a median perihelion distance of 0.259 pc and a 90% confidence interval of 0.249–0.269 pc, 1.158 Myr ago. HD 7977 might have passed 0.15 pc from the Sun 2.77 Myr ago, but it has RUWE = 2.015.
The Behavior of HgMn Stars in the Far-UV—Paper 12: HD 172883
Authors: Monier Richard
Published: September 2022

The analysis of high resolution spectra of the chemically peculiar star HD 172883 recorded by the SWP camera on board the International Ultraviolet Explorer reveals no significant variations of the far-ultraviolet flux of this star. The far-ultraviolet resonance and autoionization lines of Si ii, characteristic of the Bp Si-rich stars, are strong absorbers in the spectrum of HD 172883. The comparison of the mean SWP spectrum of HD 172883 with that of HD 38899, a normal late B-type star having similar fundamental parameters, reveals the presence of a strong resonance line of Hg ii line at 1942.27 Å for the first time. The TESS lightcurve of HD 172883 does not show a clear pattern of variability.
New Close Binary Central Stars of Planetary Nebulae from Gaia DR3 Epoch Photometry
Authors: Chornay Nicholas , Walton Nicholas A.
Published: September 2022

Close binary interactions perform a key role in the formation and shaping of planetary nebulae (PNe). However only a small fraction of Galactic PNe are known to host close binary systems. Many such systems are detectable through photometric variability. We searched recently published epoch photometry data from Gaia DR3 for planetary nebula central stars with periodic photometric variability indicative of binarity, uncovering four previously unknown close binaries.
Deux exemples de divinités des eaux à Pompéi : Sarnus et Venus Pompeiana
Authors: Charles-Laforge Marie-Odile
Published: September 2022

Bien que peu répandu à Pompéi, Sarnus (le fleuve Sarno divinisé) est présent sur plusieurs peintures religieuses et profanes. Néanmoins, aucun sanctuaire de cette divinité n’y est attesté. Sur les peintures de laraire, Sarnus apparaît comme une divinité secondaire, contrairement à Venus Pompeiana . Sur ses représentations, nous constatons qu’elle tient un gouvernail renversé. Sa signification est double : il rappelle les origines marines de la déesse, mais aussi la prospérité maritime de la cité et son lien avec le commerce maritime et fluvial. Son origine marine a fait d’elle une déesse protectrice des marins et de la navigation.
Sinope et la mer : cultes marins et maritimes
Authors: Barat Claire
Published: September 2022

La cité de Sinope, située au milieu de la côte méridionale de la mer Noire, possède, du fait de sa position littorale, des divinités marines et maritimes dans son panthéon. Deux divinités maritimes importantes, à savoir Poséidon Hélikonios et Apollon Delphinios, ont été importées de sa métropole, Milet, tandis qu’on trouve aussi à Sinope des divinités secondaires liées à l’environnement marin, qui sont un témoignage de l’identité sinopéenne : le héros Autolycos, compagnon de Jason et/ou d’Héraclès, qui avait un sanctuaire oraculaire à Sinope jusqu’à sa prise par le général romain Lucullus en 70 avant J.-C. ; et la nymphe ou l’Amazone Sinope, qui apparaît sur les monnaies civiques de Sinope à l’époque hellénistique.
La place de la religion dans le paysage fluvial et dans la vie sur la rivière : l’exemple de la Meuse et de quelques cours d’eau de la France médiévale
Authors: Suttor Marc
Published: September 2022

Jusqu’ici, dans mes recherches sur les fleuves, je n’ai abordé les thèmes liés à la religion que de manière indirecte. Dès lors, je ne pourrai pas répondre à toutes les questions suggérées à l’occasion de ce colloque. Je m’efforcerai toutefois d’analyser le rôle de la religion dans la vie des bateliers mosans et des rivières « françaises », ensuite les rituels liés aux gués, enfin l’expression du sentiment religieux par l’intermédiaire de la construction de chapelles ou de croix sur les ponts, tout en insistant sur les sources dont dispose l’historien.
Arrivé à bon port ! Le quotidien des voyageurs sur l’eau dans le monde romain, reflété par l’épigraphie
Authors: Dondin-Payre Monique
Published: September 2022

Quoique les voyages fluviaux et maritimes soient d’une grande banalité dans l’empire romain, ils ont, à cause de cette familiarité même, suscité peu de mentions épigraphiques. Toutefois, plusieurs textes font état, en creux, des trajets sur eau, le plus souvent à travers les dangers, évités ou non, des décès survenus, des sollicitations aux dieux et des remerciements après des trajets accomplis sans encombre. Les interventions de sauvetage, particulièrement dans les ports, sont aussi mentionnées. Rien de spectaculaire, mais un reflet plus réaliste des dangers et des succès des voyages sur l’eau que les échos qu’en donnent les écrits littéraires.
Navigation et observation de la nature au XVI e siècle : le rôle des oiseaux dans les voyages maritimes portugais
Authors: Roque Ana
Published: September 2022

Cet article vise à examiner le rôle des oiseaux de mer dans les voyages maritimes des Portugais du xvi e  siècle, tout en s’interrogeant sur l’importance des observations réalisées pour l’étude de l’histoire environnementale des régions qui ont été l’objet de description. Ainsi, les oiseaux marins sont abordés en considérant à la fois le point de vue de l’observateur, plus précisément celui des différents observateurs qui, au fil du temps, ont méticuleusement collecté et enregistré les informations qu’ils considéraient comme fondamentales pour la navigation, et le corpus de documents issus de ces observations ; l’importance de celles-ci va bien au-delà des raisons qui les ont fait naître et nous amène à d’autres questions, telles que l’émergence de l’histoire naturelle et des pratiques scientifiques à l’ère moderne.
Les nouvelles relations entre la Turquie et la Russie
Authors: Balci Bayram
Published: September 2022

Les relations entre la Turquie et la Russie ont longtemps été conflictuelles. Elles le restent pour une part, comme le montre l’exemple de la Syrie, mais des formes de coopération sont aussi possibles lorsqu’il s’agit d’intérêts mutuels. Ce qui les réunit est le sentiment d’être mal aimées de l’Occident. Mais les liens ne sont pas rompus entre la Turquie et l’Occident, ce qui pourrait lui permettre de jouer un rôle de médiatrice.
La Rochelle Territoire Zéro Carbone
Authors: Ezvan Cécile
Published: September 2022

En quoi consiste cette trajectoire bas-carbone pour les habitants de La Rochelle ? Comment est-elle mise en œuvre par les acteurs économiques et dans les politiques publiques ? L’énergie en circuit court, la transition des filières industrielles vers une économie circulaire, le financement des projets de compensation carbone figurent parmi les leviers d’action de ce projet, lancé en 2020 et structurant pour les vingt prochaines années.
Des laïcs théologiens pour construire l’Église de demain
Authors: Desmazières Agnès
Published: September 2022

La théologie universitaire fut largement une affaire de clercs. La présence croissante de laïcs, hommes et femmes, dans les facultés de théologie change la donne. Cet apport est crucial dans une Église qui se veut en dialogue avec le monde. Il peut renforcer la place des disciplines profanes, souligner l’importance de la liberté de la recherche et renforcer la crédibilité de la parole de l’Église.
L’ultime rempart à la désolation
Authors: Martin Alexandre
Published: September 2022

Le camp constitue l’une des institutions centrales du régime totalitaire nazi où, comme le dit Hannah Arendt, « tout devient possible ». En s’attaquant à ce qui se trouve au fondement de la subjectivité et de l’intersubjectivité humaine, il s’agit de détruire l’action. Toutefois, ce qu’a mis en lumière la littérature concentrationnaire, c’est que le camp vient se heurter à un reste indestructible : la confiance primordiale comme foyer de toutes les modalités de la confiance.
La confiance, la promesse et le pacte selon Paul Ricœur
Authors: Abel Olivier
Published: September 2022

On montre d’abord que pour Paul Ricœur la confiance est inséparable du doute, et la conviction de la critique, que c’est le sens même de son « herméneutique critique ». On montre ensuite que les pactes reposent sur un acte de langage fragile, qui est la promesse. On montre enfin que c’est sur la fiabilité du témoignage, c’est-à-dire la fiabilité du sujet parlant et attestant ce qu’il dit, que repose le caractère « fiduciaire » des affaires humaines.
Le vrai, le beau, le juste et le grand
Authors: Erbland Brice
Published: September 2022

Comment forger la confiance des futurs officiers ? Le lieutenant-colonel Brice Erbland, commandant de bataillon à Saint-Cyr Coëtquidan, livre sa « recette » : agir pour donner confiance, d’abord, en employant l’exemplarité, la justice et l’amour, puis faire confiance et encourager en donnant de la liberté d’action et en poussant à rechercher les transcendantaux que sont le vrai, le beau, le juste et le grand dans toute entreprise.
Redonner du sens à la subsidiarité
Authors: Jordan Frédéric
Published: September 2022

La confiance est aujourd’hui, comme hier, un préalable au succès en opérations, mais elle doit s’appuyer sur une culture de la subsidiarité qui nécessite d’être renouvelée car battue en brèche par les effets de la technologie ou l’évolution de la société. Dans l’armée de terre, cette confiance partagée et réciproque peut s’appuyer sur l’entraînement, mais surtout sur l’élaboration des ordres et la conduite de la manœuvre où l’esprit de la mission prime souvent sur la lettre. Redonner de l’initiative aux subordonnés, susciter leur confiance par des ordres clairs et contrôler avec bienveillance sont les fondements d’une culture à consolider.
Bâtir la confiance. Au cœur du métier de gendarme
Authors: Junqua Christophe
Published: September 2022

Leitmotiv de la production législative de ces dernières années, au centre des politiques publiques, la restauration de la confiance de la population dans ses institutions constitue un impératif démocratique. Acteur majeur des crises actuelles, implantée au cœur des territoires les plus fracturés, la gendarmerie nationale s’appuie pour cela sur trois piliers : sa fiabilité, son agilité et sa légitimité. Se fondant à la fois sur sa culture militaire et sur une organisation laissant une large place à la subsidiarité et à l’intelligence locale, elle s’inscrit dans une dynamique de modernisation de l’action publique vitale pour notre avenir collectif.
Diplomatie européenne : histoire d’une confiance malmenée
Authors: de Kaniv Nathalie
Published: September 2022

Confiance et méfiance, deux antonymes qui relèvent d’une sphère philosophique ou émotionnelle. La diplomatie, quant à elle, repose sur le droit et les relations internationales. Cependant, les deux concepts se rejoignent constamment. Quelle est la place de la confiance et de la méfiance dans la diplomatie portée par les vingt-sept États membres de l’Union européenne, et quelle dynamique mobilise la guerre sur le continent européen ?
Résistance. Quand la confiance est un risque
Authors: Pollack Guillaume
Published: September 2022

La question de la confiance dans l’engagement résistant est complexe et inséparable de celle de la fiabilité. Au sein des réseaux, c’est une relation anxieuse à l’altérité dans un monde où des civils sont impitoyablement traqués et où les agents doubles sont des experts en dissimulation. En France, c’est un pari sur l’avenir et la mort. La violence de la répression a provoqué l’émergence d’une crise de la confiance dont les effets se mesurent jusqu’à nos jours, en particulier dans la construction de discours et d’une mémoire cathartiques.
Une affaire de neurobiologie
Authors: Medjad Nadia
Published: September 2022

Les humains ne peuvent espérer survivre qu’en collaborant. La confiance est l’outil biologique à leur disposition pour gérer cette interdépendance. Mais elle résulte d’un équilibre biologique délicat entre des tensions qui entrent constamment en compétition et qu’il n’est possible de maîtriser que partiellement. Et bien que la décision de faire confiance soit vitale, nous sommes généralement incapables d’expliquer clairement comment nous la prenons. Ce flou intérieur sur un enjeu central nous expose à des risques importants. Nous avons donc tout à gagner à mieux comprendre cette mécanique biologique si nous voulons conduire nos vies de façon éclairée.
Staged Cement Injections for Massive Sacral Hemangioma
Authors: Leonard Sarah E. , Edwards Charles C.
Published: September 2022

Vertebral hemangiomas are typically asymptomatic; however, they can also be a source of severe axial back pain. In this report, the authors describe the case of an unusually large sacral hemangioma that was effectively treated with staged cement augmentation. A 57-year-old man presented with chronic mid-sacral pain that was episodically severe. Magnetic resonance imaging revealed a massive lytic defect involving a majority of the body of S1 with features consistent with a hemangioma. It was theorized that the patient's pain could be attributed to the compromised structural integrity of the proximal sacrum with associated microfractures. Extensive conservative treatment failed to ameliorate the pain. A cement augmentation procedure was therefore recommended to stabilize the proximal sacrum. Due to concern about the potential for cement embolic complications, a staged bilateral approach was chosen. In the first procedure, 12 mL of bone cement was injected into the right proximal sacrum. The pain was partially improved by this injection. A 2-month interval was observed before the second cement injection in order to give time for pulmonary recovery from any potential microscopic emboli. In the second stage, 8 mL of bone cement was injected into the left proximal sacrum with excellent pain relief. There were no complications from either injection. At the 5-year follow-up, the patient reported no recurrence of mid-sacral pain. To the authors' knowledge, this is the first case reporting the effective treatment of a sacral hemangioma with staged cement injections. [
Orthopedics
. 2023;46(4):e253–e256.]
Atypical Fracture of Radial Diaphysis After Sauvé-Kapandji Procedure: A Retrospective Radiographic Evaluation of Fracture Progression
Authors: Nakajima Takeyuki , Ohno Katsunori , Yokota Atsushi , Yasuda Emi , Neo Masashi
Published: September 2022

The Sauvé-Kapandji procedure (SK), which combines distal radioulnar joint arthrodesis with creation of an ulnar pseudarthrosis, achieves good outcomes with few complications for patients with distal radioulnar joint instability or arthritis. The authors describe a case of atypical fracture of the radial diaphysis that occurred in a 79-year-old woman with rheumatoid arthritis who had undergone SK 18 years earlier. The patient had taken alendronate for osteoporosis for 13 years but had discontinued treatment 2 years before onset of symptoms. Retrospective review of serial radiographs revealed focal cortical thickening at the fracture site beginning 18 months before the onset of prodromal pain and becoming more evident over time. The patient underwent surgical repair of the fracture, which had occurred at the attachment of the pronator teres. Histopathological examination of bone excised from the fracture site and from the iliac graft used for fracture repair revealed markedly fewer trabecular osteoblasts than normal and no osteoclasts, indicating severe suppression of bone turnover. It is important to evaluate the radial diaphysis on radiographs taken after SK for early signs of atypical fracture, especially in patients with rheumatoid arthritis and a history of bisphosphonate use. Given the patient's history of bisphosphonate use and the similar radiographic appearance to atypical femoral fractures, the authors applied the term atypical radial fracture to this case. [
Orthopedics
. 2023;46(5):e317–e320.]
A fractional-order discrete memristor neuron model: Nodal and network dynamics
Authors: Ramadoss Janarthanan , Alharbi Asma , Rajagopal Karthikeyan , Boulaaras Salah
Published: September 2022

We discuss the dynamics of a fractional order discrete neuron model with electromagnetic flux coupling. The discussed neuron model is a simple one-dimensional map which is modified by considering flux coupling. We consider a discrete fractional order memristor to mimic the effects of electromagnetic flux on the neuron model. The bifurcation dynamics of the fractional order neuron map show an inverse period-doubling route to chaos as a function of control parameters, namely the fractional order of the map and the flux coupling coefficient. The bifurcation dynamics of the systems are derived both in the time and frequency domains. We present a two-parameter phase diagram using the Lyapunov exponent to categorize the various dynamics present in the system. In addition to the Lyapunov exponent, we use the entropy of the model to distinguish the various dynamics of the systems. To investigate the network behavior of the fractional order neuron map, a lattice array of $ N\times N $ nodes is constructed and external periodic stimuli are applied to the network. The formation of spiral waves in the network and the impact of various parameters, like the fractional order, flux coupling coefficient and the coupling strength on the wave propagation are also considered in our analysis.
Deux siècles de biostratigraphie en massif armoricain : de l’enquête individuelle aux actions collectives
Authors: Babin Claude
Published: September 2022

La présence de fossiles est remarquée dans les roches anciennes de l’ouest de la France au XVIIIe siècle avec parfois descriptions et figurations. Divers auteurs recensent, dans les premières décennies du siècle suivant, de nombreux taxons mais en n’attachant souvent que peu d’attention à leur répartition verticale. Vers 1850, des études plus précises proposent des datations relatives. Ces travaux demeurent des œuvres individuelles, ce qui peut en limiter l’intérêt stratigraphique, tous les groupes de fossiles n’étant pas pris en compte. Cette constatation a induit, après 1970, l’entreprise de quelques actions collectives qui, malgré des résultats encourageants, ne furent pas poursuivies. Une page d’histoire de la paléontologie stratigraphique armoricaine s’est ainsi trouvée rapidement tournée.
Use of Extracorporeal Membrane Oxygenation Therapy During Pregnancy and COVID-19: A Case Study
Authors: Kaplow Roberta , Miller Casey
Published: September 2022

Extracorporeal membrane oxygenation is emerging as a vital resource for survival of patients with acute respiratory distress syndrome related to COVID-19. Although recent research provides much insight into the advantages of extracorporeal membrane oxygenation in this patient population, little has been published on its use in pregnancy. This case study describes the use of venovenous extracorporeal membrane oxygenation in a young pregnant woman with acute respiratory distress syndrome due to COVID-19. It illustrates the benefits of a multidisciplinary approach to this treatment modality, allowing time for a fetus to become viable while preserving the life of the mother. In this case, the mother was able to return home after receiving this therapy and resume normal activities of daily living independently.
Effect of magnesium on severity and mortality of COVID–19 patients
Authors: Avan Razieh , Mazidimoradi Afrooz , Salehiniya Hamid
Published: September 2022

Unbalanced magnesium levels in the body, like other minerals, are a factor that is important in the severity and mortality of COVID-19. This study was designed to investigate the relationship between serum magnesium levels and clinical outcomes in COVID-19 patients. In this systematic review, a comprehensive search was performed in PubMed, Scopus, and Web of Science databases until September 2021 by using the keywords COVID-19, severe acute respiratory syndrome coronavirus 2, coronavirus disease, SARS- COV-infection 2, SARS-COV-2, COVID 19, and magnesium. End-Note X7 software was used to manage the studies. Articles that evaluated effect of magnesium on COVID-19 were included in the analysis. After reviewing several articles,12 studies were finally included in the ultimate analysis. The studies show that hypomagnesemia and hypermagnesemia are both factors that increase mortality in patients with COVID-19, even in one study, hypomagnesemia is the cause of doubling thedeaths in COVID-19 patients. Some studies have also found a negative correlation between magnesium deficiency and infectionseverity, while some others have reported no correlation between magnesium level and disease severity. According to the important role of magnesium in the body and its involvement in many physiological reactions, as well as differences in physical and physiological conditions of COVID-19 patients, in addition to the need for studies with larger sample sizes, monitoring and maintaining normal serum magnesium levels during the disease seems necessary as a therapeutic target, especially in patients admitted to the intensive care unit.
An Observational Crossover Study of N95 Respirator with Surgical Mask and Visor in Various Combinations on Healthy Volunteers and Their Impact on Physiological Variables
Authors: Nanda Ananya , Sangineni Kalyani SDL , Pakhare Vandana , Ramachandran Gopinath , Chellaboyina Chandra Sekhar Naga
Published: September 2022

Background and Aim:

The COVID pandemic necessitated the use of masks to reduce the propagation of coronavirus by airborne transmission. This research was conducted in healthy volunteers to assess the changes in noninvasive measurable physiological variables over 45 min at rest.

Methods:

This was a prospective randomized controlled crossover trial. Twenty-one healthy volunteers were monitored for pulse rate (PR), peripheral oxygen saturation (SpO2), systolic blood pressure (SBP), diastolic blood pressure (DBP), respiratory rate (RR), inspired carbon dioxide and expired carbon dioxide (ECO2), inspired (FiO2) and expired oxygen (FeO2), every 15 min for 45 minute (min) with N95 respirator, N95 respirator with surgical mask (SM), N95 with SM and visor (V), SM with N95, and N95 respirator with visor.

Results:

Repeated measures analysis of variance (ANOVA) of PR, RR, SpO2, SBP, and DBP over time within the group and intragroup was calculated and found statistically insignificant. P value for comparison of mean value within the group was calculated by paired t-test with Bonferroni correction. There was a significant rise in ECO2 in the N95 group over time, and repeated measures ANOVA showed P = 0.04 at 30 min between the N95 + V group and the N95 + SM + V group. Inspired CO2 was statistically significant over time in the N95 + SM + V with P = 0.02.

Conclusion:

N95 alone or in combination with a SM and visor does not cause any clinically significant measurable physiological derangements. The inspired CO2 may be implicated in the symptoms manifested by individuals.
Circadian rhythm in prostate cancer: time to take notice of the clock
Authors: Zhu Wei-Zhen , He Qi-Ying , Feng De-Chao , Wei Qiang , Yang Lu
Published: September 2022

The circadian clock is an evolutionary molecular product that is associated with better adaptation to changes in the external environment. Disruption of the circadian rhythm plays a critical role in tumorigenesis of many kinds of cancers, including prostate cancer (PCa). Integrating circadian rhythm into PCa research not only brings a closer understanding of the mechanisms of PCa but also provides new and effective options for the precise treatment of patients with PCa. This review begins with patterns of the circadian clock, highlights the role of the disruption of circadian rhythms in PCa at the epidemiological and molecular levels, and discusses possible new approaches to PCa therapy that target the circadian clock.
Incidence of cerebral microembolization in patients with nonvalvular atrial fibrillation using transcranial Doppler
Authors: El-Bahnasy Hamouda A.K.H. , Zaki Mohamed A.
Published: September 2022

Background and aim

Atrial fibrillation (AF)-related stroke represented more than 79% of all strokes of cardiogenic origin. AF is the crucial factor of cardiogenic stroke. AF-related stroke is manifested with severe clinical manifestation, significant disability, high mortality, and easier relapse. The incidence of mortality is twice as high as non-AF-related stroke. The AF type is usually of nonvalvular origin. The current work is aiming to determine the incidence of cerebral microembolization in nonvalvular AF patients.

Patients and methods

The current study was a prospective study of two groups of individuals: control and nonvalvular asymptomatic AF cardiac condition, hypertension, age, diabetes, sex, and stroke (CHADS) score 2 or more. Patients were collected from the cardiology clinic and department (Al-Azhar University Hospital, New Damietta, Egypt). Patients were submitted to history taking, clinical assessment, echocardiography, and transcranial Doppler ultrasonography, and microembolic signal detection and count. Also, the transcranial Doppler was used to monitor both middle cerebral arteries.

Results

There was a statistically significant difference between the control and study groups in relation to the number of microembolic signals. Signals of microembolizations were detected in eight cases (all were in the study group). There was a positive correlation between embolic signals and patient age (r=0.424, P=0.020) and there was a significant association with female sex. In addition, there was a positive correlation between embolic signals and left-atrium dimension (r=0.502). Regarding correlation, there was a negative interaction between embolic signals and anticoagulation use (r=−0.413, P=0.023).

Conclusion

Asymptomatic embolic signals occur in patients with nonvalvular AF who are not being treated with anticoagulants at a significantly greater frequency than in age-matched controls.
Vitreopapillary traction a missed or underdiagnosed entity: Case report
Authors: Sood Gitanjli , Mahajan Sandeep , Parashar Aditi , Sood Shilpa
Published: September 2022

We report two cases of pseudo disc edema due to vitreopapillary traction. The first is 50-year- old female who had been evaluated for disc edema, with normal neurological examination and imaging study. On presentation we noted the presence of glial tissue at disc bilaterally and optical coherence tomography (OCT) revealed vitreopapillary traction (VPT). Second case is a 63-year old female who presented with history of unilateral blurring of vision in right eye. On examination she had cataract in right eye with blurring of bilateral disc margins. There was no colour vision or field defect and OCT was supportive of VPT.
Post-ROCM restrictive strabismus: A challenge for strabismus surgeon
Authors: Verma Shreya , Singh Anupam , Khurana Mittali , Sharma Srishti , Kumari Pooja , Tyagi Amit K
Published: September 2022

Restrictive strabismus is characterized by extraocular motility restriction, which is confirmed by performing forced duction test. It can be congenital because of various syndromes or acquired after thyroid eye disease, after long-standing strabismus, after sinus surgery, or after trauma. Recently, we have faced a devastating epidemic of rhino-orbito-cerebral mucormycosis (ROCM) during the second wave of COVID-19 pandemic, which was treated by both surgical (sinus surgery) and medical (antifungal agents) modalities. Diabetes mellitus and the inadvertent use of systemic steroid were the leading risk factors for ROCM outbreak. India being the diabetic capital of the world favored this condition. We are reporting a challenging case of ROCM with diabetes mellitus, who presented to us with troublesome diplopia with extraocular motility restriction. He had a history of right-sided ROCM treated by sinus surgery and systemic antifungal agents 1 year back, followed by a good residual vision and restrictive strabismus leading to the symptoms. A previous history of sinus surgery and post-ROCM scarring and narrow surgical field posed a great challenge for strabismus surgery. In spite of all odds, a good postoperative alignment was achieved by a single-stage strabismus surgery, and the patient was asymptomatic after 3 months of follow-up.
Conjunctival Amyloidosis
Authors: Garg Neha , Diwaker Preeti , Gaur Jyotsana Harit , Shastri Malvika , Sharma Sonal
Published: September 2022

Amyloidosis is a complex multisystem disorder characterized by deposition of an aberrant protein in tissues and results in disruption of the normal organ function. Localized amyloidosis is a rare disorder. It commonly affects the head-and-neck region, and only 4% of these lesions are encountered in the orbital region. Hence, conjunctival amyloidosis is a very rare entity. It is thought to be a manifestation of local immunologic disorders. Amyloidosis of conjunctiva is more often localized with no other systemic features. Here, we present two cases of unilateral conjunctival amyloidosis, one with extensive calcification. Conjunctival amyloidosis must be considered in the differential diagnosis of conjunctival neoplasms. Histopathological examination and apple-green birefringence on polarized microscopy with Congo red stain remain the gold standard for diagnosing this entity.
The impact of smartphone applications on bowel preparation, compliance with appointments, cost-effectiveness, and patients’ quality of life for the colonoscopy process: A scoping review
Authors: Aksan Feyzullah , Tanriverdi Lokman H. , Figueredo Carlos Jose , Barrera Layla C. , Hasham Alia , Jariwala Sunit P.
Published: September 2022

The aim of this scoping review is to evaluate the impact of smartphone application (SPA) technology in patients undergoing elective colonoscopy to measure compliance with appointments, cost-effectiveness, bowel preparation, and quality of life. The scoping review was performed according to the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews. Ovid Medline, Web of Science, Science Direct, Scopus, Cochrane Library, and PubMed were screened up to Oct 14, 2020, and bibliographies of the retrieved articles were included. Based on pre-specified inclusion and exclusion criteria, 8 primary studies were included in the final analysis from a total of 3,979 non-duplicate articles. Seven out of eight studies measured the bowel preparation quality. In six of these studies, patients in the smartphone group had a successful bowel preparation when compared with the control arm; on the other hand, one study did not find any differences between groups. Adherence to colonoscopy screening was assessed by one study. Patients in the digital intervention arm were significantly more likely to complete a screening test. Patient satisfaction during the periprocedural period of colonoscopy was assessed by five studies which reported significantly higher patient satisfaction in the intervention arm compared to the control arm. None of the studies measured cost-effectiveness. We came to the conclusion that a well-designed, user-friendly SPA can help and guide patients undergoing colonoscopy through the process of following up on their appointments, adhering to bowel preparation, and better understanding their disease condition. Future trials investigating SPAs should include cost-effectiveness and adherence to appointments as an endpoint.
Combating Human Micronutrient Deficiencies through Soil Management Practices that Enhance Bioavailability of Nutrients to Plants
Authors: O'Meara Mary
Published: September 2022

Micronutrient malnutrition affects the health and well being of 3 billion people globally. Identifying means to improve the micronutrient density in the edible portions of crops is an important way to combat nutrient deficiencies. By studying how plants obtain micronutrients from the soil, we can develop methods to enhance uptake. Although more research is necessary, important farming methods include micronutrient and biofertilizers, crop rotations, organic matter management, and irrigation water fortification.
Does Formative Assessment Improve Student Learning and Performance in Soil Science?
Authors: Kopittke Peter M. , Bernhard Wehr J. , Menzies Neal W.
Published: September 2022

Soil science students are required to apply knowledge from a range of disciplines to unfamiliar scenarios to solve complex problems. To encourage deep learning (with student performance an indicator of learning), a formative assessment exercise was introduced to a second‐year soil science subject. For the formative assessment exercise, students were required to prepare a draft of a critical review of a current topic in soil science, and then (following guidance from staff members) provide feedback to each other through a peer assessment exercise. In contrast to expectations, the formative assessment did not appear to improve overall student performance in this task based upon their grades for this task. Furthermore, despite being given an exemplar and attending a workshop where tactics for searching the scientific literature were discussed, this did not increase the likelihood that students would cite studies from the scientific literature when conducting their critical review. Regardless of these observations, the students were positive and appreciated the feedback they received through the exercise. This study demonstrates the need to ensure that feedback is effective and enables students to identify their weaknesses and modify their work accordingly.
A Meta-Analysis of the Effects of Dance Programs on Physical Performance: Appropriate Health Promotion for Healthy Older Adults
Authors: Sooktho Suparat , Songserm Nopparat , Woradet Somkiattiyos , Suksatan Wanich
Published: September 2022

Background: Dancing is a type of physical activity that has been associated with physical benefits in older adults. Regular dancing can help maintain physical function and improve the quality of life in this population. This review evaluated randomized control trials (RCTs) of the effectiveness of dance programs on the physical function of healthy older adults.Methods: We systematically searched four databases (PubMed, Google Scholar, Embase, and ThaiLis) through December 2021 for primary studies evaluating dance programs in healthy older adults aged 60 years and over. The meta-analysis used a random-effects model to compute the effect sizes using a forest plot and Cochran’s Q and I2 statistics as heterogeneity measures.Results: Eight types of dance programs showed significantly improved physical function. Muscle strength was assessed using the five times sit-to-stand test (I2=89%; p=0.003), chair-sit-to-stand-30S test (I2=75%; p=0.006), and 30-s arm curl test (I2=22%; p=0.260). Static balance was evaluated using the Berg-balance scales test (I2=0%; p=0.620) and the one-leg-stand test (I2=32%; p=0.220). Dynamic balance was tested based on the time up-and-go and eight-foot up-and-go tests (I2=51%; p=0.110). Flexibility was assessed based on the back-scratch (I2=56%; p=0.130) and sit-and-reach test (I2=0%; p=0.930).Conclusion: Dance exercise programs improved muscle strength, balance, and flexibility. Such programs are effective and safe for healthy older adults for use as daily exercise to promote health. Therefore, researchers, healthcare providers, and policymakers should establish properly organized dance interventions to improve physical function in healthy older adults.
Availability of Drinking Water Source and the Prevalence of Diarrhea among Nigerian Households
Authors: Adamu Isa , Andrade Flávia Cristina Drumond , Singleton Chelsea R.
Published: September 2022

Diarrhea is highly prevalent in Nigeria and accounts for 16% of deaths among Nigerian children. The WHO classifies water source into two categories: improved and unimproved. This study aimed to examine the association between type of water source and the prevalence of diarrhea among members of a nationally representative sample of Nigerian households while controlling for key sociodemographic and household factors. This study used cross-sectional data from 22,571 households participating in the 2018 Water, Sanitation and Hygiene-National Outcome Routine Mapping survey. Data collectors visited and interviewed household members across all 36 states in the country. Logistic regression was used to assess associations between water source type and the odds of a family member reporting diarrhea, after controlling for financial status, availability of soap/detergent for handwashing, availability of a refrigerator in the home, toilet type, and urban/rural status. After controlling for explanatory variables in the adjusted model, having an unimproved water source was associated with greater odds of diarrhea among a family member (odds ratio, 1.59; 95% CI, 1.44–1.77). Not having a refrigerator and not having soap/detergent for handwashing were also associated with greater odds of diarrhea. In summary, this study found an association between water-source type and diarrhea prevalence among Nigerian households. This study is in line with prior studies in Nigeria and elsewhere, and the results call for greater commitment and action by stakeholders to improve water sources and, ultimately, reduce the prevalence of diarrhea in Nigeria.