bluuebunny/crossref_metadata_2025 huggingface dataset:
Astrophysical Properties of 600 Bona Fide Single Stars in the Hyades Open Cluster
Authors: Brandner Wolfgang , Calissendorff Per , Kopytova Taisiya
Published: February 2023

The determination of the astrophysical properties of stars remains challenging and frequently relies on the application of stellar models. Stellar sequences in nearby open clusters provide some of the best means to test and calibrate stellar evolutionary models and isochrones and to use these models to assign astrophysical properties consistently to a large sample of stars. We aim at updating the single-star sequence of the members of the Hyades cluster, identifying the best-fitting isochrones, and determining the astrophysical properties of the stars. The Gaia Catalog of Nearby Stars provides a comprehensive sample of high-probability members of the Hyades cluster. We apply a multistep method to flag photometric outliers and to identify bona fide single stars and likely binary and multiple systems. The single stars define a tight sequence, which in the mass range 0.12–2.2 M
⊙ is well fitted by PARSEC isochrones for a supersolar metallicity of [M/H] = +0.18 ± 0.03 and an age of 775 ± 25 Myr. The isochrones enable us to assign mass, effective temperature, luminosity, and surface gravity to each of the 600 bona fide single main-sequence stars. The observed sequence validates the PARSEC isochrones. The derived stellar properties can serve as benchmarks for atmospheric and evolutionary models and for all-sky catalogs of stellar astrophysical properties. The stellar properties are also relevant for studies of exoplanet properties among Hyades exoplanet hosts.
Cosmicflows-4
Authors: Tully R. Brent , Kourkchi Ehsan , Courtois Hélène M. , Anand Gagandeep S. , Blakeslee John P. , Brout Dillon , Jaeger Thomas de , Dupuy Alexandra , Guinet Daniel , Howlett Cullan , Jensen Joseph B. , Pomarède Daniel , Rizzi Luca , Rubin David , Said Khaled , Scolnic Daniel , Stahl Benjamin E.
Published: February 2023

With Cosmicflows-4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. Eight methodologies are employed, with the largest numbers coming from the correlations between the photometric and kinematic properties of spiral galaxies (TF) and elliptical galaxies (FP). Supernovae that arise from degenerate progenitors (type Ia SNe) are an important overlapping component. Smaller contributions come from distance estimates from the surface brightness fluctuations of elliptical galaxies and the luminosities and expansion rates of core-collapse supernovae (SNe II). Cepheid period–luminosity relation and tip of the red giant branch observations founded on local stellar parallax measurements along with the geometric maser distance to NGC 4258 provide the absolute scaling of distances. The assembly of galaxies into groups is an important feature of the study in facilitating overlaps between methodologies. Merging between multiple contributions within a methodology and between methodologies is carried out with Bayesian Markov chain Monte Carlo procedures. The final assembly of distances is compatible with a value of the Hubble constant of H
0 = 74.6 km s−1 Mpc−1 with the small statistical error of ±0.8 km s−1 Mpc−1 but a large potential systematic error of ∼3 km s−1 Mpc−1. Peculiar velocities can be inferred from the measured distances. The interpretation of the field of peculiar velocities is complex because of large errors on individual components and invites analyses beyond the scope of this study.
Comparing the Locations of Supernovae to CO (2–1) Emission in Their Host Galaxies
Authors: Mayker Chen Ness , Leroy Adam K. , Lopez Laura A. , Benincasa Samantha , Chevance Mélanie , Glover Simon C. O. , Hughes Annie , Kreckel Kathryn , Sarbadhicary Sumit , Sun 孙 Jiayi 嘉懿 , Thompson Todd A. , Utomo Dyas , Bigiel Frank , Blanc Guillermo A. , Dale Daniel A. , Grasha Kathryn , Kruijssen J. M. Diederik , Pan Hsi-An , Querejeta Miguel , Schinnerer Eva , Watkins Elizabeth J. , Williams Thomas G.
Published: February 2023

We measure the molecular gas environment near recent (<100 yr old) supernovae (SNe) using ∼1″ or ≤150 pc resolution CO (2–1) maps from the PHANGS–Atacama Large Millimeter/submillimeter Array (ALMA) survey of nearby star-forming galaxies. This is arguably the first such study to approach the scales of individual massive molecular clouds (M
mol ≳ 105.3
M
⊙). Using the Open Supernova Catalog, we identify 63 SNe within the PHANGS–ALMA footprint. We detect CO (2–1) emission near ∼60% of the sample at 150 pc resolution, compared to ∼35% of map pixels with CO (2–1) emission, and up to ∼95% of the SNe at 1 kpc resolution, compared to ∼80% of map pixels with CO (2–1) emission. We expect the ∼60% of SNe within the same 150 pc beam, as a giant molecular cloud will likely interact with these clouds in the future, consistent with the observation of widespread SN–molecular gas interaction in the Milky Way, while the other ∼40% of SNe without strong CO (2–1) detections will deposit their energy in the diffuse interstellar medium, perhaps helping drive large-scale turbulence or galactic outflows. Broken down by type, we detect CO (2–1) emission at the sites of ∼85% of our 9 stripped-envelope SNe (SESNe), ∼40% of our 34 Type II SNe, and ∼35% of our 13 Type Ia SNe, indicating that SESNe are most closely associated with the brightest CO (2–1) emitting regions in our sample. Our results confirm that SN explosions are not restricted to only the densest gas, and instead exert feedback across a wide range of molecular gas densities.
Molecular Gas Properties in Young Stellar Clusters with a Suppressed Star Cluster Wind
Authors: Silich Sergiy , Turner Jean , Mackey Jonathan , Martínez-González Sergio
Published: February 2023

In compact and dense star-forming clouds a global star cluster wind could be suppressed. In this case stellar feedback is unable to expel the leftover gas from the cluster. Young massive stars remain embedded in a dense residual gas and stir it by moving in the gravitational well of the system. Here we present a self-consistent model for the molecular gas distribution in such young, enshrouded stellar clusters. It is assumed that the cloud collapse terminates and the star formation ceases when a balance between the turbulent pressure and gravity and between the turbulent energy dissipation and regeneration rates is established. These conditions result in an equation that determines the residual gas density distribution that, in turn, allows one to determine the other characteristics of the leftover gas and the star formation efficiency. It is shown that our model predictions are in good agreement with several observationally determined properties of cloud D1 in the nearby dwarf spheroidal galaxy NGC 5253 and its embedded cluster.
Serendipitous Nebular-phase JWST Imaging of SN Ia SN 2021aefx: Testing the Confinement of 56Co Decay Energy
Authors: Chen Ness Mayker , Tucker Michael A. , Hoyer Nils , Jha Saurabh W. , Kwok Lindsey A. , Leroy Adam K. , Rosolowsky Erik , Ashall Chris , Anand Gagandeep , Bigiel Frank , Boquien Médéric , Burns Chris , Dale Daniel , DerKacy James M. , Egorov Oleg V. , Galbany L. , Grasha Kathryn , Hassani Hamid , Hoeflich Peter , Hsiao Eric , Klessen Ralf S. , Lopez Laura A. , Lu Jing , Morrell Nidia , Orellana Mariana , Pinna Francesca , Sarbadhicary Sumit K. , Schinnerer Eva , Shahbandeh Melissa , Stritzinger Maximilian , Thilker David A. , Williams Thomas G.
Published: February 2023

We present new 0.3–21 μm photometry of SN 2021aefx in the spiral galaxy NGC 1566 at +357 days after B-band maximum, including the first detection of any Type Ia supernova (SN Ia) at >15 μm. These observations follow earlier JWST observations of SN 2021aefx at +255 days after the time of maximum brightness, allowing us to probe the temporal evolution of the emission properties. We measure the fraction of flux emerging at different wavelengths and its temporal evolution. Additionally, the integrated 0.3–14 μm decay rate of Δm
0.3–14 = 1.35 ± 0.05 mag/100 days is higher than the decline rate from the radioactive decay of 56Co of ∼1.2 mag/100 days. The most plausible explanation for this discrepancy is that flux is shifting to >14 μm, and future JWST observations of SNe Ia will be able to directly test this hypothesis. However, models predicting nonradiative energy loss cannot be excluded with the present data.
The Far-ultraviolet Variability of the Early A-type Star HD 1280 (θ And)
Authors: Monier Richard
Published: February 2023

The analysis of two spectra of the early A-type star HD 1280, recorded by the SWP camera on board the International Ultraviolet Explorer, reveals large variations of the far-ultraviolet flux shortwards of 1850 Å. The amplitude of these variations increases toward shorter wavelengths. In contrast, the mid-ultraviolet flux from 2200 up to 3000 Å is constant in the available spectra collected with the LWP camera. These variations could be due to large horizontal chemical or thermal gradients over the stellar surface, or stellar pulsation, or the presence of a companion.
The Effect of Multiple Low-mass Flybys Can Preserve the Orbit of Neptune-like Objects in Slightly Perturbed Orbits in Star Formation Clusters
Authors: Jiménez-Torres Juan J.
Published: February 2023

The objective of this work is focused on solving the problem in the regular theory where the strong effects of single impacts on proplanetary particles in the early stages of the Solar system can noticeably perturb the orbit of inner planets such as Neptune. As a first-approach solution, I propose that multiple low-mass flybys can produce the observed orbit of a Neptune-like particle. I calculated the effects of four subsequent flybys to know the difference between their effects and the effect of a massive encounter. The effects of multiple low-mass impacts deliver lower eccentricities and inclinations of the planetary particle compared to the result produced by the single encounter.
Human and animal brucellosis in the Sultanate of Oman: an epidemiological study
Authors: Al-Ani Falah , Al Ghenaimi Said , Hussein Emad , Al Mawly Julanda , Al MushaiKi Khalid , Al Kathery Salim
Published: February 2023

Introduction: Brucellosis is an infectious disease caused by direct contact with infected animals or animal products contaminated with Brucella. Brucella is a Gram-negative aerobic coccobacillus that infects different types of animals and is considered to be an important zoonotic disease.
Methodology: Brucella were isolated from blood samples and identified following biochemical tests and agglutination with A and M monospecific antisera. Furthermore, Brucella antibody titers of the tested sera were obtained by the microtiter agglutination method (MAM).
Results: The main Brucella species isolated in Oman was B. melitensis. However, in countries bordering Oman and their neighboring countries, both B. melitensis and B. abortus have been isolated and identified. A total of 412 human patients with suspected cases of brucellosis were admitted to the Department of Communicable Disease Surveillance and Control in the Dhofar Governorate for diagnosis and treatment. During the year 2015, a total of 343 human cases were positively diagnosed with brucellosis in the Dhofar Governorate. During the years 2015 to 2019, a total of 10,492 animals were examined in different Governorates of Oman for brucellosis. The results indicated that 1161 (11%) animals were serologically positive for brucellosis.
Conclusions: The results of this study confirmed that Brucella melitensis is the main species responsible for human brucellosis in Oman. It was not surprising that the Dhofar Governorate exhibited a high percentage of infected patients since it is culturally acceptable to drink raw camel milk (unpasteurized), unlike cow milk which is pasteurized.
The Unanticipated Pleasures of the Future : Degrowth, Post -growth and Popular Cultural Economies
Authors: Banks Mark
Published: February 2023

A renewed theory of 'degrowth' has recently emerged from different streams of political economy, ecological economics and environmental activism. Yet contemporary degrowth (and post-growth) has yet to develop any credible or inclusive theory of cultural production, art or aesthetics.
A key challenge, as I see it, is to generate a progressive degrowth project that can not only more equitably share and sustain scarce resources, but also retain some sense of organised cultural production as a source of different aesthetic, symbolic and communicative needs and desires. This,
I would argue, must include tastes and preferences that are rooted in shared and globally extensive forms of popular culture. The aim here, therefore, is to conceive of a degrowth perspective that might begin to imagine forms of genuinely sustainable and organised cultural economy that strive
to accommodate and expand (rather than deny or frustrate) the widest array of human needs and desires in any ecologically-challenged future.
Extinctiopolitics: Existential Risk Studies, The Extinctiopolitical Unconscious, And The Billionaires' Exodus from Earth
Authors: Davidson Joe P.L.
Published: February 2023

One of the most prominent intellectual attempts to grapple with human extinction in recent decades is existential risk studies. For its proponents, like Nick Bostrom and Toby Ord, there is a one-in-six chance that humanity will go extinct in the next century, whether from an asteroid
hit, nuclear Armageddon or misaligned artificial intelligence. The field has powerful supporters, with Silicon Valley billionaires like Elon Musk and Jaan Tallinn donating large sums to institutions researching existential risk. In this article, I consider the ideological function of the imaginaries
of catastrophe proposed by existential risk studies. To this end, the article begins by examining the distinctive mode of politics, termed extinctiopolitics, elaborated by Bostrom and Ord. Via a critical comparison with the concept of biopolitics, I suggest that extinctiopolitics aims to optimise
the future life of humanity through the prediction and prevention of risks that threaten its annihilation. Borrowing the Freudian notion of screen memory, I then argue that extinctiopolitics both acknowledges and represses the ecocidal tendencies of contemporary capitalism. The image of the
collective death of the species evokes a range of disastrous events in the present, especially the climate crisis, but in such a way that their social conditions are obscured. By way of conclusion, I briefly reflect on how science fiction texts use the image of human extinction to unpick the
ideological manoeuvres of extinctiopolitics and restage the real contradictions of capitalism.
Responders to Medial Opening Wedge High Tibial Osteotomy for Knee Osteoarthritis
Authors: Primeau Codie A. , Birmingham Trevor B. , Appleton C. Thomas , Leitch Kristyn M. , Fowler Peter J. , Marsh Jacquelyn D. , Giffin J. Robert
Published: February 2023

Objective

Medial opening wedge high tibial osteotomy (HTO) aims to improve symptoms for patients with knee osteoarthritis (OA) and varus alignment, yet the likelihood of achieving a minimum clinical threshold of response and the factors predictive of response are unclear. We evaluated the proportion of patients meeting responder criteria based on the Outcome Measures in Rheumatology–Osteoarthritis Research Society International consensus 2 years after medial opening wedge HTO and investigated predictors of response.

Methods

Patients in a prospective cohort with symptomatic knee OA and varus alignment completed the Knee Injury and Osteoarthritis Outcome Score questionnaire < 3 months before and 2 years after HTO. For our primary analysis, we calculated the proportion of responders with ≥ 20% relative improvement and an absolute change of ≥ 10 points in pain and function from baseline. We performed logistic regression to evaluate the association of predictors with response and completed sex-disaggregated analyses.

Results

At a mean of 20.3 (SD 6.2) months post-HTO, 406 patients (78%) met the responder criteria. Older age, higher BMI, and larger postoperative mechanical axis angles (ie, slight valgus) were associated with increased odds of achieving responder criteria, although odds ratios were small. When stratified by sex, 316/405 male patients (78%) and 90/118 female patients (76%) met the responder criteria.

Conclusion

Based on responder criteria for knee OA, 78% of patients undergoing medial opening wedge HTO were responders at 2 years postsurgery. Although patients who are younger, male, and nonobese are viewed as appropriate candidates for HTO, patients who are female, are older, and have a high BMI also achieve sizable improvements in pain and function.
Qui sont les conducteurs infractionnistes qui participent à au moins trois stages de sensibilisation à la sécurité routière en cinq ans ? Sont-ils différents de ceux qui y participent pour la première fois ?
Authors: Karras Marion , Delhomme Patricia , Csillik Antonia
Published: February 2023

L’objectif de cette enquête est de comparer les dimensions comportementales et psychologiques des conducteurs participant à trois stages de sensibilisation à la sécurité routière en cinq ans (dits réitérants), et de ceux qui participent pour la première fois (dits primo-stagiaires), et d’étudier les ressources et vulnérabilités psychologiques qui prédisent leurs comportements routiers. Au cours de 110 stages, 241 réitérants et 560 primo-stagiaires ont complété un questionnaire « papier-crayon ». Comparés aux primo-stagiaires, les réitérants déclarent s’engager plus souvent dans des infractions et des activités distrayantes non liées à la conduite, et être davantage impliqués dans des accidents de la route. Disposition à l’attention consciente et expression agressive de la colère au volant prédisent les comportements des réitérants et des primo-stagiaires.
Corps, séduction et sexualité : étude clinique du traitement psychique de la perte et de ses aléas chez des hommes séropositifs et homosexuels confrontés au vieillissement
Authors: Rigaudière Marine , Verdon Benoît
Published: February 2023

Depuis la découverte des trithérapies, les personnes séropositives ne sont plus condamnées à mourir rapidement. Elles vieillissent même. Mais cette expérience peut être difficile, du fait du risque plus important et plus précoce de développer des comorbidités somatiques, d’une estime de soi souvent fragilisée et de la reviviscence de problématiques de perte. Notre propos vise à approfondir la compréhension des modalités de traitement psychique de la perte, en mettant l’accent sur les réaménagements de la sexualité et le vécu des transformations corporelles suscitées par l’avancée en âge. À partir d’une méthodologie qualitative, nous analysons des entretiens cliniques semi-directifs conduits auprès de deux hommes homosexuels et séropositifs âgés de 54 et 65 ans. Fragilités et ressources narcissiques s’articulent aux difficultés plus ou moins importantes pour consentir à la perte et à l’expérience dépressive.
D’un corps mollusque à un véhicule turbo ! Comment l’inclusion scolaire est facilitée par l’entremise des objets autistiques et du double
Authors: Toussaint Hélène , Grollier Michel
Published: February 2023

Cet article s’intéresse particulièrement aux conditions facilitatrices que permet la prise en compte des objets autistiques et du double dans le processus inclusif des enfants autistes à l’école. Cet abord s’oriente particulièrement à partir des théories psychanalytiques lacaniennes touchant le traitement de la jouissance dans l’autisme grâce à la construction de ce que nous nommons « un bord ». Cette notion va être ici dépliée dans toute sa dimension clinique et opérationnelle avec l’illustration d’un cas clinique. Il s’agit du cas de Lilian, jeune garçon autiste de quatorze ans accompagné par un Service d’éducation et de soins spécialisés à domicile (SESSAD) depuis sept ans. Les données recueillies sont issues des séances éducatives et thérapeutiques avec Lilian, ainsi que du travail en lien avec ses parents et les équipes pédagogiques.
La Convention citoyenne pour le climat a-t-elle travaillé comme une assemblée parlementaire ?
Authors: Buge Éric
Published: February 2023

L’article compare le fonctionnement de la Convention citoyenne pour le climat française (CCC) avec celui des missions d’information de l’Assemblée nationale. D’une part, il montre que si les deux structures reposent sur une forme de division du travail entre leurs membres, cette dernière repose sur des logiques différentes : affiliation partisane dans le cas de l’Assemblée et création d’une identité collective pour la CCC. D’autre part, si l’Assemblée distingue nettement les rôles des député·es, des fonctionnaires et des expert·es auditionné·es, la Convention a fonctionné comme un « collectif hybride » réunissant citoyen·nes, Comité de gouvernance, expert·es, etc. Sur le fondement de cette comparaison, l’article se conclut par quelques suggestions de design institutionnel pour les conventions à venir.
Postpartum Depression in a Context of Social Vulnerability in Morocco
Authors: Manoussi Abdelmounaim , Baali Abdellatif , Amor Hakima , Ouzennou Nadia
Published: February 2023

Postpartum depression is a public health problem. The aim of this study is to assess its prevalence among women in the province of Essaouira (Morocco) and to understand the factors associated with it. A cross-sectional survey was conducted among 504 married women aged 18 to 49 years in 16 health centers. The Edinburgh Post-partum Depression Scale was used to screen for postpartum depression. Data entry and statistical processing were performed using SPSS-PC 18. The prevalence of postpartum depression was 30%. Binary logistic regression showed that psychic history in the last pregnancy (odds ratio = 2.08; 95% CI = 1.41 to 3.06) and household socioeconomic level (odds ratio = 1.692; 95% CI = 1.09 to 2.61) were significantly associated with postpartum depression. To reduce postpartum depression, it is necessary to invest in mental health of women during the perinatal period and to act to improve their socioeconomic conditions.

[
Psychiatr Ann
. 2023;53(2):96–104.]
An overview on platelet concentrates in tissue regeneration in periodontology
Authors: Bhangdiya Kapil , Wankhede Anand , Madhu Priyanka Paul , Reche Amit
Published: February 2023

Recent research on the use of platelet concentration in medicinal dentistry has enhanced the potential for tissue regeneration. The ability of platelets to enhance tissue regeneration by using different forms of platelet concentration (blood component) such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF), standard platelet-rich fibrin, advanced platelet-rich fibrin, etc. PRP became widely used once its potential for tissue regeneration was discovered; however, the use of anticoagulants restricted the easy use of PRP as compared to PRF; however, after the discovery of PRF because of the easy formulation, it became widely used in medicinal dentistry. The purpose of this review is to elaborate on the importance of platelet concentration in periodontal regeneration.
New fixed point results in controlled metric type spaces based on new contractive conditions
Authors: Shatanawi Wasfi , Shatnawi Taqi A. M.
Published: February 2023

In the present work, we will establish and prove some fixed point theorems for mappings that satisfy a set of conditions in controlled metric type spaces introduced by Mlaiki et al. [N. Mlaiki, H. Aydi, N. Souayah, T. Abdeljawad, Controlled metric type spaces and the related contraction principle. Mathematics 2018, 6,194]. Our technique in constructing our new contraction conditions is to insert the control function $ \theta(u, l) $ that appears on the right hand side of the triangular inequality of the definition of the controlled metric spaces in the right hand side of our proposed contraction conditions. Our results enrich the field of fixed point theory with novel findings that generalize many findings found in the literature. We provide an example to show the usefulness of our results. Also, we present an application to our results to show their significance.
A collaborative scheduling model for production and transportation of ready-mixed concrete
Authors: Yin Jing , Huang Ran , Sun Hao , Lin Taosheng
Published: February 2023

Ready-mixed-concrete (RMC) is an important green and clean building material which is widely used in modern civil engineering. For the large-scale planar foundations of urban public buildings, huge amounts of RMC need to be continuously delivered to the construction site according to strict time windows, which brings the problem of multi-plants collaborative supply. In this paper, considering transportation capacity, initial setting time, and interrupt pumping time, a collaborative scheduling model for production and transportation of RMC with the objective of minimizing the penalty cost of interruption pumping and vehicle waiting time and fuel consumption cost was established. According to the characteristics of the problem, a double chromosome synchronous evolution genetic algorithm was designed. Finally, the model and algorithm proposed in the paper were verified by data experiments. The computing results showed that in two cases of different scenarios, such as ordinary constructions and emergency constructions, the proposed scheduling model can save 18.6 and 24.8% cost respectively. The scheduling model and algorithm proposed in the paper can be applied directly to improve the operational efficiency of RMC supply chain.
Bifurcations of a delayed predator-prey system with fear, refuge for prey and additional food for predator
Authors: Shao Yuanfu
Published: February 2023

Taking into account the impacts of the fear by predator, anti-predation response, refuge for prey, additional food supplement for predator and the delayed fear induced by the predator, we establish a delayed predator-prey model in this paper. We analyze the persistence and extinction of species and the existence and uniqueness of a coexistence fixed point. Particularly, we investigate the local asymptotic stability of the equilibrium by use of the characteristic equation theory of a variational matrix. Applying the Hopf bifurcation theorem, we investigate and obtain the bifurcation thresholds of the parameters of fear, refuge coefficient, the quality and quantity of additional food and the anti-predation delayed response produced by prey. Finally we give some examples to verify our theoretical findings and clarify the detailed influences of these parameters on the system dynamics. The main conclusions reveal that these parameters play an important role in the long-term behaviors of species and should be applied correctly to preserve the continuous development of species.
Vertige de l’art
Authors: Dalmasso Véronique , Jamet Stéphanie
Published: February 2023

Tomber en syncope, telle est l’invitation de l’ouvrage Vertige de l’art. Syncopes et extases (xvie-xxie siècles). Ces états de vacatio propices à la création artistique à la Renaissance perdurent et entraînent les auteures à mettre en regard des œuvres modernes et contemporaines. Une syncope insaisissable et cependant présente dans le domaine scientifique, la littérature, la philosophie et la musique. Le concept de syncope-extase permet de déconstruire les perceptions de faiblesse ou de non-action apparentes et d’affirmer une échappée paradoxale, un contre-pouvoir.Hiatus, faille ou encore disjonction que l’artiste des différentes époques de l’art provoque et dont il s’agit d’interpréter la portée sociale et anthropologique. L’ouvrage donne ainsi à voir ou à éprouver ce moment syncopal, un hors-temps de l’histoire.
R2D2/C3PO Video Conferencing Instructional Strategies and Learning Activities
Authors: Armstrong Ann , Gale Albert J.
Published: February 2023

The rapid emergence of COVID-19 in the Spring of 2020 forced a majority of academic institutions, teachers, administrators, and students to precipitously move to online learning. In that sudden move, cloud-based video conferencing technology, allowing teachers and students to interact live with one another, became the technology of choice for many. The key factor that precipitated the move to video conferencing technology in schools was the ability to humanize online learning and provide a live visual link between teacher and students. This chapter describes each element of R2D2/C3PO, a research-based, validated, instructional design model, in-depth, providing generic examples of instructional strategies and learning activities for each element. The overarching objective of this article is to list and describe each model component, which are read, reflect, display, do, coaching, conviviality, critical incident questionnaire, planning, and organization, and then to provide detailed descriptions of constructivist instructional strategies and learning activities that can be used.
Strategic diagnosis of a property specialized in breeding, rearing and finishing beef cattle in the southern region of Piauí
Authors: Silva Rosemeire  Pereira da , Fernandes  Artur Henrique Sousa , Carneiro Priscila Teixeira de Souza , Gurgel Antonio Leandro Chaves , Santos Viviany Lúcia Fernandes dos
Published: February 2023

This study aimed to perform a strategic diagnosis on a property specialized in breeding, rearing and finishing beef cattle in the southern region of Piauí. It was conducted at Agropecuária Alvorada, located in the countryside, municipality of Bom Jesus, PI, Brazil. The farm develops the full cycle of beef cattle production, which is divided into breeding, rearing and finishing. A SWOT analysis (which stands for Strengths, Weaknesses, Opportunities and Threats) was carried out, consisting of an assessment of the property’s internal and external environments. To evaluate the internal environment, an interview was held for data collection by means of questionnaires. The evaluation included: breeding management, sanitary management, nutritional management, infrastructure, workforce, technologies used in pasture formation, conservation and recovery, pasture management and zootechnical indices. To analyze the external environment, a group of people (experts) with deep knowledge of the subject addressed during the study was used as source of information. A matrix was generated with all the information from the SWOT analysis, strengths, weaknesses, opportunities and threats, culminating with the establishment of strategies to increase the productive efficiency of the cattle raising activity.
Short communication: psychrotrophic microorganism count in raw milk samples preserved with azidiol®
Authors: Felipus Nadine Cristina , Thaler Neto André , Bajaluk Sergio Antonio Bogdano , Voges Joana Gerent , Knob Deise Aline
Published: February 2023

The study aimed to evaluate the use of the azidiol® preservative for psychrotrophic microorganism count (PMC) in cooled raw milk. Two studies were carried out, one under controlled conditions (experiment 1) and the other under field conditions (experiment 2), in which samples of raw milk were taken with and without the use of the azidiol® preservative and analyzed at predefined times (0, 6, 12 and 24 hours - experiment 1) and at varying times (experiment 2). Analysis of variance and regression analysis using SAS were applied for data statistical analysis. Milk samples without azidiol® showed higher PMC with increasing time between sampling and analysis, while in samples preserved with azidiol®, this count remained constant. Samples of cooled raw milk intended for PMC should be collected in flasks containing the azidiol® preservative.
Crude Palm Oil Physicochemical and Quality Characterisation
Authors: Rosli Nurul Liyana , Ku Halim Ku Halim , Alias Rusmi
Published: February 2023

Crude Palm Oil (CPO) is extracted from the mesocarp of fruit obtained from the oil palm tree, which is also known as Elaeis guineensis. CPO contains Free Fatty Acid (FFA), which is one of the unnecessary constituents in CPO that is not good for food items and human consumption. Various methods for the deacidification process led to maximising the processing time, energy, and operating costs. Therefore, the aim of this research is to do a physical upgrading of the CPO, which may remove the FFA from the CPO while minimising the processing time, energy, and operating costs. However, prior to the physical upgrading of the CPO, it is important to highlight the physicochemical and quality characterisation of the CPO, which is essential and becomes a necessary procedure before the refining process. The purpose of this research is to examine the physicochemical and quality characteristics, which are fatty acid composition and FFA content, of the CPO, respectively. The American Oil Chemists’ Society (AOCS) method was used for this research work. The results showed the percentage of palmitic acid, stearic acid, oleic acid, and linoleic acid of the CPO were 40.1 %, 2.5 %, 37.5 %, and 19.9 %, respectively. The FFA content of the CPO was 4.90 %. The findings indicated the CPO met the recommended value by the Malaysian Palm Oil Board (MPOB). The physicochemical and quality characterisation of the CPO provide information as a guideline before the physical upgrading of the CPO that may produce palm oil products with good constituents for human health and the food industry.
Effect of pH on Removal of Lead Using Plant-Based Surfactant Impregnated on Activated Carbon
Authors: Khairudin Nur Izzati Binti , Ahmad Normadyzah , Ah-Ya Muhammad Khairil , Puasa Siti Wahidah , Abdul Ghani Fazni Susila
Published: February 2023

Modification of activated carbon using chemical surfactant is not eco sustainable because the chemical will have the potential to desorb into aqueous medium. Due to the environmental concerns, this research aims to investigate the usage of plant-based surfactant as a modifying agent onto the surface of activated carbon (AC) to be used in the removal of lead from aqueous solution. AC was impregnated with sodium lauryl sulfoacetate (SLSA), a plant based anionic surfactant at different concentrations. Atomic absorption spectroscopy (AAS) was used to examine the percentage removal of lead and to identify the effect of pH on the adsorptive properties of SIAC. The results exhibited the enhancement in the adsorption of lead using modified AC with SLSA. It was found that SIAC at 25 mg/L has the highest lead removal which was 99%. The optimum concentration anionic surfactant obtained was used in parametric study effect of pH. The optimum pH was obtained at pH 6 as it indicated the highest removal of lead (84.92%). Excel software was used to fit the data using polynomial regression. R2 and adjusted R derived from the analysis were 0.9043 and 0.9522, respectively. As a result of the ANOVA study, it was shown that the mathematical formula can be utilised to forecast the removal of lead from aqueous solution.
Pheromone trap monitoring reveals the continued absence of swede midge in the Northern Great Plains
Authors: Vankosky Meghan A. , Hladun Shane , Williams Jonathon , Soroka Juliana J. , Andreassen Lars , Meers Scott , Beauzay Patrick B. , Prochaska T.J. , Lubenow Lesley , Chirumamilla Anitha , Calles-Torrez Veronica , Knodel Janet J. , Mori Boyd A.
Published: February 2023

The swede midge, Contarinia nasturtii (Kieffer) (Diptera: Cecidomyiidae), is invasive to North America, where it was first reported in Ontario, Canada. It is now established in eastern Canada and from eastern Minnesota in the Midwest to the northeastern seaboard of the United States of America. Swede midge is a serious pest of brassicaceous plants, including vegetable and oilseed crops. To ensure its early detection in the Northern Great Plains, a monitoring programme was established using pheromone traps located primarily along the edges of canola fields from North Dakota, United States of America, northwest to the Peace River region, in Alberta and British Columbia, Canada. In North Dakota, 117 trap sites were monitored between 2015 and 2021. In western Canada, monitoring occurred on a small scale from 2006 to 2011, and 521 trap sites were monitored from 2013 to 2021. Swede midge was not detected in canola grown in the Northern Great Plains between 2006 and 2021. Partners in North Dakota and western Canada intend to maintain the monitoring programme to support early detection of swede midge if it does continue to disperse northwestwards. The monitoring programme contributes to outreach activities and fosters farmer and agronomist participation in pest management (i.e., community science) in the Northern Great Plains.
Abstract 104
Authors: Kaur Kirandeep , Sridharan Kalyani
Published: February 2023

Background: Endogenous hyperinsulinemichypoglycemia occurs due to unregulated release of insulin causing hypoglycemia. It can occur due to islet cell tumors or diffuse enlargement of islet cells in apparently healthy adults without any prior history of gastrointestinal surgery. We describe four cases of endogenous hyperinsulinemia that presented to us with varied clinical presentations and discuss the challenges in diagnosis and management.

Case Presentation

Case 1: A38-year-old femalepresented with frequent episodes of loss of consciousness. She was found to have hypoglycemiawith documented endogenous hyperinsulinemia. All anatomic and functional imaging including contrast-enhanced computed tomography (CECT), endoscopic ultrasound (EUS), and Ga-68 DOTANOC positron emission tomography (DOTA -PET) were negative. An insulinomawas identified by intraoperative palpation and her symptoms resolved post-resection.

Case 2: A 51-year-old female with prior diabetes mellitus was admitted with frequent hypoglycemia even after stopping anti-diabetic medications. After documenting hyperinsulinemia, a suspicious lesion was identified in the pancreatic tail on CECTthat was resected leading to resolution of hersymptoms.

Case 3: A 32-year-female presented with frequent hypoglycemiaforthe past 4 years. After admission, endogenous hyperinsulinemia was documented but CECT and EUS were normal. A functional GLP-1 scan showed diffuse uptake in the whole of the pancreas suggestive of nesidioblastosis. During surgery, an intra-op frozen section confirmed diffuse islet hyperplasia and she underwent a distal pancreatectomy. She had recurrence of hypoglycemia after 3 months and is on medical therapy currently.

Case 4: A 27-year female in her first trimester of pregnancy presented with hypoglycemia in whom endogenous hyperinsulinemia was documented. Magnetic resonance imaging without contrast and EUS showeda suspicious lesion in the pancreatic head with liver metastasessuggesting malignant insulinoma. She was initiated on diazoxide and octreotide and was planned for debulking surgery in the second trimester in case of persistent hypoglycemia. However, due to financial constraints, she stopped medical therapy and unfortunately expired after a month.

Conclusion: These cases highlight the varied clinical presentations and diagnostic challenges encountered in a seemingly healthyindividual with hypoglycemia. Insulinoma is the underlying cause in majority; but because of small size and location, these are commonly missed on anatomical scans. Functional imaging (DOTA-PET /GLP-1 PET-CT) is emerging with better diagnostic accuracy. Diagnosis during pregnancy can pose further management challenges.
Abstract 114
Authors: Nair Vineet , Joshi Shilpa , Khader Mohammed Abdul , Thakkar Piya Ballani , Burkul Deepak , Kothari Mikhil
Published: February 2023

Background: Losing about 7% of body weight is known to reduce insulin resistance, blood pressure and reduce the risk for diabetes. Large waistlines have been a marker for metabolic syndrome. This study explores the effectiveness of the Fitterfly Weight loss digital therapeutics (DTx) program among individuals in overweight and obese categories.

Method: De-identified data of 135 participants (Mean age: 39.35 ± 11.83 years, gender: 38.51% (52/135) females) enrolled in the Fitterfly Weight loss program was analyzed. BMI in the range of 25.0- 29.9 kg/m2 and ³ 30 kg/m2 and was used as a criterion for classification in overweight and obese category respectively. All participants completed 90 days on the Fitterfly weight loss program and were provided access to Fitterfly mobile application along with continuous remote health coaching, expert-led care (nutritionists, physiotherapists, and psychologists). Intensive behavioral therapy was used to promote sustained weight-loss. Digital logging of meals and physical activity, access to in-house nutrition database consisting of dietary information for each meal item logged was provided. The outcomes were analyzed at the beginning and end of the program. Wilcoxon signed rank test was used for analysis. The data has been shown as median (IQR).

Results: Significant median reduction in weight, body mass index (BMI), and waist circumference was observed by 4.00 (-6.00, -2.70) kg, 1.50 (-2.20, -1.00) kg/m2, 6.00 (-9.00, -3.00) cm from a baseline of 83.00 (75.00, 95.00) kg, 31.70 (29.20, 34.60) kg/m2, and 107.00 (99.00, 115.00) cm respectively (p < 0.0001 for all). Out of all the participants, 94.07% (127/135) participants showed weight loss, with minimum 5% and minimum 10% weight loss observed in 50.39% (64/127) and 7.08% (9/127) participants respectively. At the end of the program, a significant median reduction in intake of calories, carbohydrates, proteins, and fats by 427.00 (-704.00, -221.00) kcal, 56.00 (-105.00, -30.00) gm, 6.40 (-14.80, 4.40) gm, and 18.40 (-29.40, -7.50) gm from a baseline value of 1535.00 (1299.00, 1876.00) kcal, 205.00 (165.00, 236.00) gm, 47.00 (40.10, 56.20) gm, and 61.00 (49.00, 74.00) gm were observed respectively (p < 0.0001 for all).

Conclusion: Significant reduction in weight, BMI, waist circumference was observed among participants. Fitterfly weight loss program can help in clinically significant weight loss among individual in obese or overweight category.
Abstract 124
Authors: Pradhan A. , Baliarshinha A. K. , Mishra I.
Published: February 2023

Introduction: Recent studies have shown an association between adrenal insufficiency (AI) and increased cardiovascular risk (CVR). However, there is no information on whether secondary adrenal insufficiency (SAI) is associated with the increased risk of cardiovascular disease.

Aims and Objective: The aim of the current study was to estimate thecorrelation of serum cortisol with serum adiponectin and metabolic parameters in patients of secondary adrenal insufficiency.

Material and Methods: Total 40 patientswere recruited. Patient diagnosed to have Secondary Adrenal Insufficiency (hypocortisolemia) confirmed with ITT will be included and relevant history, baseline clinical data, anthropometry, blood investigations like CBC, FPG, 2 hr PPG, LFT, RFT, HbA1c, fasting lipid profile, thyroid function test, serum adiponectin will be collected.

Results: Of total patients, 35% were male, 65% were female with mean age of 45 year, BMI 22.6 kg/m2. 30% Patient had secondary adrenal insufficiency. The relationship between serum cortisol levels during the ITT and each of TG, LDL-C, HDL-C, and serum adiponectin levels was determined by the calculation of the Pearson correlation coefficient

Conclusion: Peak cortisol levels correlated significantly with serum adiponectin levels and serum HDL levels. There were no differences in TG and LDL-C levels between the two groups
Abstract 130
Authors: Jha Ankan
Published: February 2023

Objectives: To evaluate the characteristics of presentation, biochemical profile, and etiology of gynecomastia in patients

Methods: Medical records of 270 patients with gynaecomastia were evaluated

Results: The medical records of 270 males presenting with symptoms of gynaecomastia were reviewed. Mean duration of symptoms at the time of presentation was 41 +- 53.31 months. Besides clinical examination, diagnosis of gynaecomastia was documented by sonomammography in 27.22% of patients. Based on BMI 20.2% patients were overweight and (6.9%) patients were Obese. Median age at the time of presentation was 19.0 years (range 10-72 years). Pain was associated in 57.4% patients. Bilateral gynaecomastia was seen in patients 76.23%. Associated erectile dysfunction along with loss of libido were observed in 10 patients (3.9%). In 43.3% patients etiology of gynaecomastia was idiopathic. Other common etiologies were Pubertal (37.0%), pharmaceutical drugs (6.6%), Anabolic steroids (2.2%), variococele (2.2%), Klinefelter syndrome and other causes of primary testicular failure (2.9%) and chronic alcoholism (1.48%). One patient was diagnosed with hypothyroidism. When compared to the idiopathic group patients presenting secondarily to pharmaceutical drugs were older (P = 0.0343) while those with pubertal gynaecomastia were younger (p = 0.0001). Patients with klinefelter syndrome (p = 0.001), other causes of primary gonadal failure (p = 0.0007) and chronicalcoholism (0.019) had mean testicular volume that was less when compared to idiopathic group. Patients with klinefelter syndrome and other causes of primary testicular failure had low testosterone values and higher FSH and LH values when compared to idiopathic group.

Conclusions: Patients with gynecomastia presented more often with aesthetic concerns and breast pain. The most frequent diagnosis was idiopathic gynecomastia, whereas the most frequent identified etiologies were pharmaceutical drugs, anabolic steroids consumption, hypogonadism. Although other etilogies were less frequent, patients presenting with gynaecomastia should be subjected to thorough work up.
Abstract 131
Authors: Reddy R Manoj Kumar , Sheth Kaushal Vinay Kumar , Nataraj Nanda , Boddula Raman
Published: February 2023

Objective: Primary aldosteronism is the most common form of secondary hypertension. Despite the high prevalence of hypertension among diabetic patients, the prevalence of primary aldosteronism is not known because screening of primary aldosteronism is seldom performed. Identification of primary aldosteronism in Diabetic population with refractory hypertension gives a chance to prevent the morbidity and fatality associated with primary aldosteronism. We aim to screen patients for primary aldosteronism by conducting a prospective study which included adults with Type2 DM and resistant hypertension from the outpatient diabetic clinic.

Patients and Measurements: Total 86 consecutive subjects with Type2 DM and Resistant hypertension (defined as BP greater than 140/90mm Hg in spite of the concurrent use of 3 anti hypertensive medications of different classes at pharmacologically effective doses or controlled BP <140/90mmHg on four or more antihypertensive agents) were screened for Primary aldosteronism. Patients with a plasma Aldosterone concentration to Direct renin ratio (PAC/DRC) of ³2.4 ng/dl/mIU/ml along with Plasma Aldosterone Concentration (PAC) ³ 10 ng/dl were considered to be positive on a screening test.

Results: 18 subjects out of 86 subjects screened, (20.9% [95% CI 13.2-31.3%]) tested positive for Primary Aldosteronism. There were no differences in age, sex, serum potassium, duration of hypertension, duration of diabetes and number of antihypertensive drugs between subjects with and without primary aldosteronism. Subjects with primary aldosteronism had higher Plasma Aldosterone Concentration values (PAC) (20.53 ± 8.28 vs. 11.42 ± 7.35 ng/dl, P < 0.001) lower Direct Renin Concentration values (DRC) (3.88 ± 2.41 vs. 62.54 ± 112.88 mIU/ml, P < 0.001) and higher Plasma Aldosterone Concentration to Direct Renin Ratio (PAC/DRC) (6.43 ± 2.71 vs. 1.16 ± 1.89 ng/dl/mIU/ml, P < 0.001) than patients without Primary aldosteronism.

Conclusion: Primary aldosteronism is prevalent (maximum 20.9%) in Indian patients with Type2 DM and Resistant hypertension. Systematic screening for Primary aldosteronism in this select group is recommended, as targeted treatment improves morbidity and mortality associated with primary aldosteronism.