bluuebunny/crossref_metadata_2025 huggingface dataset:
The 3D Dust and Opacity Distribution of Protoplanets in Multifluid Global Simulations
Authors: Krapp Leonardo , Kratter Kaitlin M. , Youdin Andrew N.
Published: April 2022

The abundance and distribution of solids inside the Hill sphere are central to our understanding of the giant planet dichotomy. Here, we present a 3D characterization of the dust density, mass flux, and mean opacities in the envelope of subthermal and superthermal-mass planets. We simulate the dynamics of multiple dust species in a global protoplanetary disk model accounting for dust feedback. We find that the meridional flows do not effectively stir dust grains at scales of the Bondi sphere. Thus the dust settling driven by the stellar gravitational potential sets the latitudinal dust density gradient within the planet envelope. Not only does the planet’s potential enhance this gradient, but also the spiral wakes serve as another source of asymmetry. These asymmetries substantially alter the inferred mean Rosseland and Planck opacities. In cases with moderate-to-strong dust settling, the opacity gradient can range from a few percent to more than two orders of magnitude between the midplane and the polar regions of the Bondi sphere. Finally, we show that this strong latitudinal opacity gradient can introduce a transition between optically thick and thin regimes at the scales of the planet envelope. We suggest that this transition is likely to occur when the equilibrium scale height of hundred-micron-sized particles is smaller than the Hill radius of the forming planet. This work calls into question the adoption of a constant opacity derived from well-mixed distributions and demonstrates the need for global radiation hydrodynamics models of giant planet formation that account for dust dynamics.
Exploring Features in the Binary Black Hole Population
Authors: Tiwari Vaibhav
Published: April 2022

Vamana is a mixture model framework that infers the astrophysical distribution of chirp mass, mass ratio, and spin component aligned with the orbital angular momentum for the binary black holes (BBH) population. We extend the mixing components in this framework to also model the redshift evolution of merger rate and report all the major one- and two-dimensional features in the BBH population using the 69 gravitational-wave signals detected with a false alarm rate <1 yr−1 in the third Gravitational-Wave Transient Catalog (GWTC-3). Endorsing our previous report and a recent corroborating report from LIGO Scientific, Virgo, and KAGRA Collaborations, we observe the chirp mass distribution has multiple peaks and a lack of mergers with chirp masses 10–12 M
⊙. In addition, we observe that aligned spins show mass dependence with heavier binaries exhibiting larger spins, the mass ratio shows a dependence on the chirp mass but not on the aligned spin, and the redshift evolution of the merger rate for the peaks in the mass distribution is disparate. These features possibly reflect the astrophysics associated with the BBH formation channels. However, additional observations are needed to improve our limited confidence in them.
The Impact of Observing Strategy on Cosmological Constraints with LSST
Authors: Lochner Michelle , Scolnic Dan , Almoubayyed Husni , Anguita Timo , Awan Humna , Gawiser Eric , A Gontcho Satya Gontcho , Graham Melissa L. , Gris Philippe , Huber Simon , Jha Saurabh W. , Lynne Jones R. , Kim Alex G. , Mandelbaum Rachel , Marshall Phil , Petrushevska Tanja , Regnault Nicolas , Setzer Christian N. , Suyu Sherry H. , Yoachim Peter , Biswas Rahul , Blaineau Tristan , Hook Isobel , Moniez Marc , Neilsen Eric , Peiris Hiranya , Rothchild Daniel , Stubbs Christopher ,   The LSST Dark Energy Science Collaboration
Published: April 2022

The generation-defining Vera C. Rubin Observatory will make state-of-the-art measurements of both the static and transient universe through its Legacy Survey for Space and Time (LSST). With such capabilities, it is immensely challenging to optimize the LSST observing strategy across the survey’s wide range of science drivers. Many aspects of the LSST observing strategy relevant to the LSST Dark Energy Science Collaboration, such as survey footprint definition, single-visit exposure time, and the cadence of repeat visits in different filters, are yet to be finalized. Here, we present metrics used to assess the impact of observing strategy on the cosmological probes considered most sensitive to survey design; these are large-scale structure, weak lensing, type Ia supernovae, kilonovae, and strong lens systems (as well as photometric redshifts, which enable many of these probes). We evaluate these metrics for over 100 different simulated potential survey designs. Our results show that multiple observing strategy decisions can profoundly impact cosmological constraints with LSST; these include adjusting the survey footprint, ensuring repeat nightly visits are taken in different filters, and enforcing regular cadence. We provide public code for our metrics, which makes them readily available for evaluating further modifications to the survey design. We conclude with a set of recommendations and highlight observing strategy factors that require further research.
Reproduction of marble-mouth frogfish Lophiocharon lithinostomus (Lophiiformes, Antennariidae) and the evolution of parental care among frogfishes
Authors: Mori Toshiaki , Murai Risa , Ito Takeshi , Okuno Seiya , Kobayashi Yuya , Uehara Tomoyuki , Satoh Shun
Published: April 2022

Here, we observed the reproductive behavior of marble-mouth frogfish (Lophiocharon lithinostomus) and the morphology of newly hatched juveniles under captive conditions. Adult males showed pursuit behavior towards females approximately seven days before spawning; spawning and ejaculation took place almost simultaneously. An adult female cared for a fertilized egg mass adhered to their right of the left side of the flank. The position of the adhered eggs on the flank was left-biased (3 on the right and 25 on the left). The females exhibited a proactive fanning behavior towards the egg masses using their dorsal fins; the fanning frequency increased over time after spawning. Meanwhile, the males did not display any form of parental care behavior. The eggs had hook-like structures that might enable the eggs to attach to the flank of the parent. Hatching occurred between 22 and 28 days after spawning. Newly hatched juveniles already had a full set of fin rays; their morphology was similar to that of adult fish. Moreover, we reviewed the evolution of parental care behaviors and egg types among frogfish family.
Grandeur et misère de la criminologie
Authors: André Sophie
Published: April 2022

En Belgique, la criminologie constitue une discipline, ou à tout le moins un champ d’études, institutionnalisé par la plupart des universités belges. Si l’on peut se réjouir de la place qu’elle occupe aujourd’hui, de ses développements passés et à venir, il n’en demeure pas moins qu’elle reste l’objet de débats, parfois enflammés, autour de sa légitimité en tant que discipline scientifique.
Femmes, justice, répression : un regard féministe
Authors: Kaufer Irène
Published: April 2022

« Mettre fin à l’impunité » est un slogan qui fleurit dans les mobilisations féministes contre les violences faites aux femmes. Et bien sûr, la passivité des diverses autorités face à ces violences est interpelante. Mais s’agit-il vraiment de « punir » ? La sécurité des femmes est-elle liée à la hauteur des sanctions ?
Les réformes financières : bilan et perspectives
Authors: Pellet Rémi
Published: April 2022

Au cours du « quinquennat de santé 2017-2022 », nous avons eu l’occasion de publier plusieurs articles 1 commentant les mesures adoptées par le législateur en application des engagements de campagne de M. Emmanuel Macron et en réaction aux deux crises majeures que la législature a connues, le mouvement dit des « gilets jaunes » d’une part, la crise sanitaire de la pandémie de Covid-19 d’autre part, cette dernière ayant conduit à des négociations entre les pouvoirs publics et les acteurs du système de santé pour aboutir le 13 juillet 2020 aux « accords du Ségur de la santé » qui comprennent d’importantes mesures de revalorisation des rémunérations des praticiens de santé et d’investissement dans les hôpitaux. En accord avec les responsables de cette revue, nous procéderons à une synthèse et actualisation de nos analyses sur les trois principales réformes financières du système de santé qui ont été réalisées entre 2017 et 2022, en écartant de notre champ d’étude des mesures qui n’ont pas encore d’effet concret à court terme. C’est le cas notamment de la création au sein de la Sécurité sociale de la branche « autonomie », réforme qui, pour l’heure, ne s’est pas traduite par une modification significative du mode de financement du risque dépendance.
Un label indésirable ? Les platiciens espagnols établis à Berlin contre la promotion d’un art « national » à l’étranger
Authors: Guirao Soro Gloria
Published: April 2022

Résumé Les artistes espagnols expatriés à Berlin mettent à distance la politique culturelle extérieure mise en place par les pouvoirs publics de leur pays d’origine. Deux propositions organisent l’analyse de ce phénomène à l’aune des résultats de l’enquête de terrain menée en 2017. La première explication concerne la configuration, l’évolution et l’implantation des programmes publics destinés à promouvoir l’art contemporain espagnol à l’étranger, notamment ceux mis en œuvre dans le cadre berlinois. La seconde s’intéresse à la tension entre une disposition individuelle à la « bonne volonté cosmopolite » et l’étiquetage « national » des programmes.
Du politique dans les arts
Authors: Péquignot Bruno
Published: April 2022

Résumé Il n’y a pas d’esthétique chez Karl Marx. Ce qui ne veut pas dire qu’on ne peut pas à partir de son oeuvre proposer des pistes pour une analyse matérialiste et dialectique du phénomène artistique. C’est ce que nous proposons ici en reprenant certains éléments de sa théorie, notamment concernant la question des instances ou de l’idéologie et en commentant certains passages où l’art sert d’illustration de ses analyses. Ces propositions sont mises en perspective avec des oeuvres plastiques et notamment celles de Goya.
A general modulus-based matrix splitting method for quasi-complementarity problem
Authors: Zhou Chen-Can , Shen Qin-Qin , Yang Geng-Chen , Shi Quan
Published: April 2022

For large sparse quasi-complementarity problem (QCP), Wu and Guo [35] recently studied a modulus-based matrix splitting (MMS) iteration method, which belongs to a class of inner-outer iteration methods. In order to improve the convergence rate of the inner iteration so as to get fast convergence rate of the outer iteration, a general MMS (GMMS) iteration method is proposed in this paper. Convergence analyses on the GMMS method are studied in detail when the system matrix is either an $ H_{+} $-matrix or a positive definite matrix. In the case of $ H_{+} $-matrix, weaker convergence condition of the GMMS iteration method is obtained. Finally, two numerical experiments are conducted and the results indicate that the new proposed GMMS method achieves a better performance than the MMS iteration method.
Primer reporte de Phengodes (Phengodella) leonilae Zaragoza-Caballero y Wittmer, 1986 (Coleoptera: Phengodidae) en Quintana Roo, México
Authors: Chamé-Vázquez Eduardo Rafael , Salas-Suárez Noemí , Bahena-Basave Humberto
Published: April 2022

Se registra por primera vez a Phengodes (Phengodella) leonilae Zaragoza-Caballero y Wittmer, 1986 (Coleoptera: Phengodidae) en el estado de Quintana Roo, México; lo que supone el primer registro de la familia Phengodidae para el estado. En total se revisaron 10 ejemplares depositados en la Colección Entomológica de El Colegio de la Frontera Sur (Chiapas, México). Los ejemplares se recolectaron en los municipios de Cozumel y Othón P. Blanco, en diferentes meses entre los años 1997 y 2018.
Señales de vida: Redescubrimiento de Erythrolamprus andinus (Dixon, 1983) (Serpentes: Dipsadidae) en Bolivia
Authors: Quinteros-Muñoz Oliver , Gómez-Murillo Pedro , Ochoa Alejandro , Espinoza-Echeverría Jorge
Published: April 2022

Cien años después de la colecta de J. Steinbach de Erythrolamprus andinus (Dixon, 1983), reportamos el redescubrimiento de E. andinus en la localidad tipo de Incachaca, Cochabamba, Bolivia. Por primera vez, se proporcionan comentarios sobre la coloración en vida, como también las primeras imágenes a color para la especie. Considerando la rareza de esta serpiente debido a los pocos registros desde su descripción, recomendamos un estado de conservación global de En Peligro Crítico para E. andinus.
La chronologie des ensembles funéraires du Néolithique final provençal. Proposition de sériation intégrant les contextes d’habitat
Authors: Sauzade Gérard , Bizot Bruno , Schmitt Aurore
Published: April 2022

Au cours des vingt dernières années, les travaux de plusieurs chercheurs ont permis d’affiner la chronologie des assemblages mobiliers et des contextes d’habitat du Néolithique final de Provence. Trois phases sont généralement reconnues. Pour les contextes funéraires, le fait que l’essentiel du mobilier soit issu de sépultures collectives souvent fouillées anciennement n’a pas permis jusqu’alors de progresser significativement sur cette question. Deux phases sont usuellement distinguées, la plus récente étant caractérisée par la présence de mobilier typiquement campaniforme.La réalisation de fouilles récentes et une analyse plus poussée des assemblages mobiliers présents dans les sépultures bénéficiant d’une stratigraphie bien établie a permis de montrer qu’il est possible de distinguer des évolutions dans la première phase. Cet article propose d’analyser plus finement la chronologie des ensembles funéraires et d’établir des parallèles entre celle-ci et la chronologie établie à partir des assemblages mobiliers issus de contextes d’habitat.Pour ce faire, a été constitué un corpus de 88 dates radiocarbone à faibles écarts types associées à des contextes funéraires et domestiques fiables et bien caractérisés. Les modèles bayésiens mis en œuvre révèlent, pour les deux types de contextes, des phases relativement synchrones malgré les disparités des mobiliers pris en compte pour établir les chronologies des deux contextes. Une seconde phase, contemporaine de celle établie pour les habitats, peut être distinguée dans les assemblages mobiliers issus de sépultures. Les architectures et modes d’occupation de ces tombes évoluent en revanche peu avant la phase 3 qui précède le Bronze ancien.
Le Rec de la Redouna 2 : un témoin du "second Mésolithique" du piémont nord oriental des Pyrénées
Authors: Baills Henry
Published: April 2022

Le gisement du Rec de la Redouna 2 se situe dans la partie orientale du massif calcaire des Corbières, formation karstique dans l’extrême sud de la France. Il a été découvert en 2015, lors de prospections de surface. Sa position, en plein air sur la terrasse plane d’un éperon naturel est à l’interfluve de deux ruisseaux. L’économie des matières premières du site du Rec de la Redouna 2 indique un approvisionnement en silex oligo-miocènes du bassin de Bages-Sigean, situé à 41 km à vol d’oiseau en direction du nord-est. La technique de débitage mise en place par les tailleurs correspond à la percussion avec chasse lame interposé. Elle permet d’obtenir des lamelles rectilignes de faible épaisseur que l’on retrouve en nombre dans la série. Malgré un effectif numériquement faible, l’industrie lithique du Rec de la Redouna est à rattacher culturellement au " second Mésolithique " tel qu’il s’exprime dans le massif des Corbières et plus généralement dans le Sud de la France. Ce diagnostic chrono-culturel s’appuie sur la présence de microlithes géométriques à troncatures abruptes, essentiellement des trapèzes, qui sont des marqueurs de ces moments dans la zone nord orientale du piémont pyrénéen. Le reste des artéfacts lithiques est assez banal, il montre des grattoirs de petite taille et des lamelles retouchées de type Montbani. Le gisement du Rec de la Redouna 2 enrichit notre documentation concernant les caractéristiques des implantations humaines à ce moment de l’Holocène. Il met en évidence les choix anthropiques. Ainsi sa localisation, à la confluence de deux ruisseaux aux cours pérennes, sur une zone plane, au sol meuble, jouissant d’une bonne exposition (ensoleillement et protection au vent dominant) sont autant de paramètres qui permettent d’approcher les conditions de vie et les motivations des derniers chasseurs mésolithiques dans leurs stratégies d’occupation spatiale. La présence avérée d’un Mésolithique terminal dans les Pyrénées-Orientales est une information importante pour que des recherches futures sur les derniers chasseurs s’organisent systématiquement autour du repérage de ces sites de plein air aux positions topographiques singulières.
Le contexte géomorphologique et faunique de l’homme de Montmaurin (Haute-Garonne)
Authors: Crégut-Bonnoure Évelyne , Boulbes Nicolas , Guérin Claude , Pernaud Jacques , Tavoso(†) André , Cammas(†) Raoul
Published: April 2022

Huit cavités sont visibles dans le karst de Montmaurin, dont la Niche qui a livré des restes humains anténéandertaliens. Grâce aux témoins de cinq nappes alluviales, édifiées par la Garonne et ses affluents, dont les traces sont visibles dans les environs du karst, il est possible de dater le remplissage de ces diverses cavités. Tous sont postérieurs à l’édification de la basse terrasse « mindélienne ». Le recoupement des données géomorphologiques et paléontologiques de la Niche permet d’attribuer ses dépôts au Pléistocène moyen et au Pléistocène supérieur. En effet, les 26 espèces de mammifères identifiées se répartissent en deux assemblages distincts. Celui des niveaux C1 et C3 est caractéristique de la fin du Pléistocène moyen. Il est contemporain du stade isotopique 7. La couche sommitale B est datée d’une phase froide du Pléistocène supérieur. L’abondance des carnivores dans les niveaux C1 et C3, jointe aux traces de morsures laissées sur les ossements d’herbivores, permet de privilégier le fonctionnement de repaire de cet ensemble. Il a aussi été un lieu d’hibernation pour l’ours et a été occupé occasionnellement par l’homme.
The Trials of Madness
Authors: MOUTAUD Baptiste
Published: April 2022

In Western modernity, madness constitutes a universe of otherness and alteration that opens up the exploration and experimentation of the forms of the human being. It challenges scientific epistemologies as much as it gives access to a singular representation of reality and contributes to the construction of our common world. The contributions in this issue explore these themes on three intimately intertwined levels: experiences, experimentations, and the materialities of madness.
Des patients au travail
Authors: EDINGTON Claire
Published: April 2022

Dans le Vietnam colonial, les asiles psychiatriques étaient conçus comme de grandes colonies agricoles, où les patients devaient travailler la terre sur le chemin de la guérison et d’une éventuelle libération. Cet article traite du rôle du travail comme une forme de thérapie pour les patients de l’asile, et de la façon dont les experts psychiatriques français étaient constamment entraînés dans des réseaux plus larges de soins et d’économie, déplaçant ainsi l’attention de l’asile lui-même vers le monde au-delà de ses murs.
Operationalizing Artificial Intelligence-Enabled Customer Analytics Capability in Retailing
Authors: Hossain Md Afnan , Akter Shahriar , Yanamandram Venkata , Gunasekaran Angappa
Published: April 2022

The value of customer analytics (CA) and artificial intelligence (AI) has been discussed separately at the forefront of research for business, marketing, and operations management. In spite of the strategic importance of CA and AI, there has been a paucity of research regarding the role of AI in operationalizing customer analytics (CA) capability. To address the gap, this study draws on a systematic literature review and thematic analysis for identifying the value-based CA capability antecedents that operationalize through AI in the context of retailing. The findings of this study extend the resource-based view (RBV)-capability theory in the spectrum of market orientation, and technology orientation to generate a better intelligence of CA capability in the retail context; while also providing theoretically grounded guidance to the practitioners. Hence, retail practitioners will likely be able to engage customers and enhance customer delight by incorporating CA capability dimensions, which is powered by AI.
Comparative study on effects of dexmedetomidine and dexamethasone on the incidence of postoperative nausea and vomiting in patients undergoing laparoscopic surgery
Authors: Singh Manpreet , Tiwari Awadh Bihari , Taank Priya , Singh Shalendra , Kaur Amrinder , Sood Munish , Yadav Rahul
Published: April 2022

Objective:

To compare the safety and efficacy of dexmedetomidine and dexamethasone for the prevention of postoperative nausea and vomiting (PONV) in patients scheduled for laparoscopic surgery.

Methods:

A total of 86 female patients were prospectively administered dexmedetomidine 1 μg/kg i.v. (the group A, n=43), and dexamethasone 8 mg i.v. (the group B, n=43). The two groups were compared in treatment response, hemodynamic changes, and Numerical Analog Scale (NAS). Besides, the relation of PONV with patient baseline characteristics in the perioperative period was determined as well.

Results:

Patients in group A had lower PONV scores (t=3.1, P<0.002), less needs for rescue anti-emetics (χ2=0.47, P<0.001), and decreased intraoperative heart rate (t=9.72, P<0.001) and mean arterial pressure (t=7.58, P<0.001) compared to that of group B. Group A reported lower NAS than group B (t=2.66, P<0.001). In addition, we found no relationship between PONV score and rescue anti-emetic requirement, age, or body mass index (P=0.96, P=0.60, P=0.28, respectively).

Conclusion:

Dexmedetomidine could be used as an effective antiemetic in laparoscopic surgeries, with better efficacy than dexamethasone. Dexmedetomidine not only can reduce PONV but also is effective in postoperative analgesia.
Effect of cold weather on carotid artery stenosis and occlusion
Authors: Roufai Hamissou Moussa Maman , Yang Jun , Song Guang-Fu , Yang Fu-Yi
Published: April 2022

Objective:

To investigate the effect of cold weather on carotid artery stenosis and occlusion.

Methods:

We conducted a retrospective observational study, in which 145 patients with carotid artery stenosis and occlusion were enrolled [115 men and 30 women; the mean age was 61.08 years (95% CI 59.27-62.88)]. Patients were divided into the low-temperature group (n=98) (≤12 °C) and the non-low temperature group (n=47) (>12 °C). Clinical characteristics, blood pressure, National Institutes of Health Stroke Scale (NIHSS), blood fat, and blood viscositys were compared between the two groups. Correlation between NIHSS and mean daily temperature was analyzed.

Results:

There was no significant difference in the systolic and diastolic blood pressure between the two groups (P>0.05). The NIHSS score was slightly higher in the non-low temperature group compared to that of the low-temperature group (U=2 984, P<0.01). Glycemia, cholesterol level, prothrombin time, fibrinogen, and International Normalized Ratio did not show any significant difference (P>0.05). Correlation analysis showed a very low positive and statistically significant correlation between ambient temperature and NIHSS score (r=0.18, P=0.029).

Conclusion:

Cold weather does not impact blood pressure, blood cholesterol, and coagulation factors of patients with carotid artery stenosis and occlusion. The neurological deficit is more severe in the non-low ambient temperature group. A potential relationship exists between ambient temperature and the level of neurological impairment.
Mortality characteristics during the two waves of COVID-19 in India
Authors: Humaney Nalini Ramesh , Kuthe Shilpa Sachin , Akhtar Shamim , Pande Vivek K
Published: April 2022

Objective:

To evaluate patient demographic characteristics and risk factors for mortality during the first and the second wave among COVID-19 patients in a tertiary care hospital of India.

Methods:

Data were taken from the hospital's electronic system for COVID-19 patients from August 2020 to December 2020, and the second from January 2021 to May 2021. The mortality rate, demographic and clinical characteristics, laboratory profile, and reasons for the death of the two waves were retrieved and compared, and the risk factors of the two waves were determined.

Results:

In the first wave, 1 177 COVID-19 cases visited the hospital and 96 (8.2%) died. In comparison, the death rate in the second wave was significantly higher (244/2 038, 12.0%) (P<0.001). No significant difference in age [60 (50-69) vs. 60.5 (53-70), P=0.11] or gender (P=0.34) was observed between the two waves. Compared to the first wave. there were significantly more cases with fever, cough, weakness, loss of taste and smell, and sore throat during the second wave (P<0.05), but significantly fewer cases with kidney disease (6.6% vs. 13.5%, P=0.038) and diabetes mellitus (35.7% vs. 50.0%, P=0.015). Besides, during the second wave, more patients had abnormal X-ray findings, higher levels of lymphocytes and serum ferritin (P<0.05). In addition, there were significant differences in the rate of death cases with acidosis, septic shock, acute kidney injury, diabetes mellitus, cardiovascular events, hypothyroidism (P<0.05). Multivariate regression showed that during the first wave, age (OR: 1.10; 95% CI: 1.02-1.21), diabetes mellitus (OR: 3.16; 95% CI: 2.08-3.53), and abnormal X-ray (2.67; 95% CI: 2.32-2.87) were significant independent risk factors of mortality; while in the second wave, age (OR: 1.13; 95% CI: 1.12-1.28), diabetes mellitus (OR: 8.98; 95% CI: 1.79-45.67), abnormal X-ray (OR: 12.83; 95% CI: 2.32-54.76), high D-dimer (OR: 10.89; 95% CI: 1.56-134.53), and high IL-6 (OR: 7.89; 95% CI: 1.18-47.82) were significant independent risk factors of mortality .

Conclusion:

Overall mortality and incidence of severe diseases are higher in the second wave than the first wave. Demographic characteristics, co-morbidities, and laboratory inflammatory parameters, especially D-dimer and IL-6, are significant risk facors of mortality during the COVID-19 pandemic.
The ‘Fluid Landscape’ of the Sundarbans
Authors: Mukhopadhyay Prama
Published: April 2022

The Sundarbans, spread across 10,200 sq. km in the lower deltaic region of Bengal, is the world's largest pro-grading delta. Most climatologists acknowledge that this fragile ecosystem, cutting across Bangladesh and India, will bear the brunt of climate change. It is estimated that the region, facing sea level rise and intensification of cyclonic activities, will experience the disastrous effects of global warming; and scientists have been expressing their concerns about the viability of human settlements there in the foreseeable future. In India, some researchers have floated the idea of 'Managed Retreat' of people from certain areas of the deltaic floodplains in a bid to 'conserve the mangroves and the ecosystem' of the Sundarbans. This postulation, first published as the Delta Vision: 2050 for the World-Wide-Fund for Nature India (WWF-India) in 2011, and discussed in the following years, in various platforms and research journals, has been advocating a 'phased and systematic outmigration' (Ghosh 2012) from the region, citing the 'Dutch Room for River' project as an exemplary ideal to be mirrored. This article will try to unpack the impact of this proposal on the local communities, living in tandem with the deltaic landscape for generations, if such a strategy is adopted.
Clinical profile of patients infected with suspected SARS-CoV-2 Omicron variant of concern, Tamil Nadu, India, December 2021-January 2022
Authors: Raju Mohan Kumar , Thangaraj Jeromie Wesley Vivian , Selvavinayagam T.S. , Somasundaram A. , Parthipan K. , Sivadoss Raju , Sabarinathan R. , Subramaniam Sudharshini , Rozario Amanda G.A. , Rani Sudha D. , Suganya E. , Murhekar Manoj V.
Published: April 2022

Background & objectives

COVID-19 cases have been rising rapidly in countries where the SARS-CoV-2 variant of concern (VOC), Omicron (B.1.1.529) has been reported. We conducted a study to describe the epidemiological and clinical characteristics and outcomes of COVID-19 patients with ‘S’ gene target failure (SGTF, suspected Omicron). Furthermore, their clinical outcomes with COVID-19 patients with non-SGTF (non-Omicron) were also compared.

Methods

This study was conducted in Tamil Nadu, India, between December 14, 2021 and January 7, 2022 among patients who underwent reverse transcription-PCR testing for SARS-CoV-2 in four laboratories with facilities for S gene screening. Consecutively selected COVID-19 patients with SGTF were telephonically contacted, seven and 14 days respectively after their date of positive result to collect information on the socio-demographic characteristics, previous history of COVID-19, vaccination status and clinical course of illness along with treatment details. To compare their outcomes with non-SGTF patients, one randomly suspected non-Omicron case for every two suspected Omicron cases from the line-list were selected, matching for the date of sample collection and the testing laboratory.

Results

A total of 1175 SGTF COVID-19 patients were enrolled for this study. Almost 6 per cent (n=72) reported a history of previous infection. 141 (13.5%) suspected Omicron cases were non-vaccinated, while 148 (14.2%) and 703 (67.4%) had received valid one and two doses of COVID-19 vaccines, respectively. Predominant symptoms reported included fever (n=508, 43.2%), body pain (n=275, 23.4%), running nose (n=261, 22.2%) and cough (n=249, 21.2%). Five (0.4%) of the 1175 suspected Omicron cases required oxygen supplementation as compared to ten (1.6%) of the 634 suspected non-Omicron cases. No deaths were reported among omicron suspects, whereas there were four deaths among suspected non-Omicron cases.

Interpretation & conclusions

Majority of the suspected Omicron cases had a mild course of illness. The overall severity of these cases was less compared to the suspected non-Omicron cases.
Phytochemical, in vitro radical scavenging and in vivo oxidative stress analysis of peppermint (Mentha piperita L.) leaves extract
Authors: Rosmalena  , Putri Nabilla Aretharify , Yazid Fatmawaty , Ambarwati Neneng Siti Silfi , Omar Hanita , Ahmad Islamudin
Published: April 2022

This current work aims to determine phytochemicals, in vitro radical scavenging, and in vivo oxidative stress reduction activities of peppermint (Mentha piperita L.) ethanolic extract (PEE). The Clule method was used to determine the phytochemical content. An in vitro antioxidant with radical scavenging activity was measured using 2,2-diphenyl-1-picrylhydrazyl. An in vivo antioxidant with oxidative stress reduction was carried out for 10 days on 25 male Sprague–Dawley rats (divided into five groups). Every day, each group was given positive control, negative control, 5, 10, and 20 mg/200 gr of body weight (BW) of the extract. The blood plasma was taken for malondialdehyde analysis. A phytochemical identification of PEE revealed more compounds, such as flavonoids, alkaloids, steroids, essential oils, and tannin. PEE exhibits significant in vitro radical scavenging activity, with an IC50 value of 126.695 µg/mL. In the in vivo antioxidant with oxidative stress reduction experiments, 5 mg/200 gr BW was the most effective dose, as evidenced by a considerable drop in malondialdehyde level (0.312 nmol/mL) after and before treatment. In conclusion, PPE has the potential to be developed as a herbal antioxidant based on in vitro and in vivo test results.
Antibiofilm activity and bioactive phenolic compounds of ethanol extract from the Hericium erinaceus basidiome
Authors: Darmasiwi Sari , Aramsirirujiwet Yaovapa , Kimkong Ingorn
Published: April 2022

Biofilm formation has become a serious health and environmental problem. Mushrooms are now considered a valuable source of bioactive compounds with antimicrobial properties. The lion's mane mushroom (Hericium erinaceus [HE]) has been used as an antimicrobial for ulcers and gastritis in East Asian countries. However, studies on the antibiofilm activities of HE basidiome against biofilm-forming pathogenic bacteria and their bioactive compound profiles are still limited. The purpose of this study was to determine the antibiofilm activity of HE and to identify its phenolic compound profile. The HE inhibitory activities against bacterial growth and biofilm formation were performed against Pseudomonas aeruginosa, Salmonella Typhimurium, Proteus mirabilis, and Staphylococcus aureus. Remarkably, P. mirabilis was the most susceptible bacteria to HE. The total phenolic content (TPC) of HE was 1652 ± 1.06 µg/ml, with protocatechuic acid and p-coumaric acid being the most abundant phenolic compounds as determined by high-performance liquid chromatography-mass spectrophotometry (HPLC-MS). This research highlights the possibility of HE as an antibiofilm agent that can be developed as a nutraceutical and natural food preservative.
Methodological approaches for imputing missing data into monthly flows series
Authors: Bleidorn Michel Trarbach , Pinto Wanderson de Paula , Schmidt Isamara Maria , Mendonça Antonio Sergio Ferreira , Reis José Antonio Tosta dos
Published: April 2022

Missing data is one of the main difficulties in working with fluviometric records. Database gaps may result from fluviometric stations components problems, monitoring interruptions and lack of observers. Incomplete series analysis generates uncertain results, negatively impacting water resources management. Thus, proper missing data consideration is very important to ensure better information quality. This work aims to analyze, comparatively, missing data imputation methodologies in monthly river-flow time series, considering, as a case study, the Doce River, located in Southeast Brazil. Missing data were simulated in 5%, 10%, 15%, 25% and 40% proportions following a random distribution pattern, ignoring the missing data generation mechanisms. Ten missing data imputation methodologies were used: arithmetic mean, median, simple and multiple linear regression, regional weighting, spline and Stineman interpolation, Kalman smoothing, multiple imputation and maximum likelihood. Their performances were compared through bias, root mean square error, absolute mean percentage error, determination coefficient and concordance index. Results indicate that for 5% missing data, any methodology for imputing can be considered, recommending caution for arithmetic mean method application. However, as the missing data proportion increases, it is recommended to use multiple imputation and maximum likelihood methodologies when there are support stations for imputation, and the Stineman interpolation and Kalman Smoothing methods when only the studied series is available.

Keywords: Doce river, imputation, missing data.
Participatory assessment to define indicators for monitoring water-based payment of ecosystem services programs in Brazil
Authors: Turetta Ana Paula Dias , Fidalgo Elaine Cristina Cardoso , Prado Rachel Bardy , Schuler Azeneth Eufrasino , Coutinho Heitor Luiz da Costa
Published: April 2022

The cascade model is a commonly applied framework to evaluate ecosystem services provision, highlighting their benefits to society and assigning non-monetary and monetary values to these services. Adapting this model, we present a methodology to establish the most suitable indicators for monitoring Payment for Ecosystem Services (PES) programs related to water resources in Brazil. Through a participatory process, a set of ecosystem functions indicators were assigned for each ecosystem service (ES) considered in the study. The indicators were then classified following these criteria: clarity, viability, sensitivity, and relevance. The indicators were organized by their final score according to each evaluated criterion. The results demonstrated that “clarity” and “relevance” criteria were those most important for the experts to choose an indicator. In general, we could also observe a preference for analytical and well-established indicators in the literature for all ES evaluated. The indicators list presented can support the PES program monitoring in Brazil. Additionally, the methodology developed can be easily applied in other areas and provide the definition of the most suitable indicators to monitor water-based PES in different Brazilian contexts.

Keywords:cascade model, ecosystem functions, ecosystem service indicators, tropical areas.
Long-time asymptotics of solutions to the Keller–Rubinow model for Liesegang rings in the fast reaction limit
Authors: Darbenas Zymantas , van der Hout Rein , Oliver Marcel
Published: April 2022

We consider the Keller–Rubinow model for Liesegang rings in one spatial dimension in
the fast reaction limit as introduced by Hilhorst, van der Hout, Mimura, and Ohnishi in 2007. Numerical
evidence suggests that solutions to this model converge, independent of the initial concentration,
to a universal profile for large times in parabolic similarity coordinates. For the concentration function,
the notion of convergence appears to be similar to attraction to a stable equilibrium point in
phase space. The reaction term, however, is discontinuous so that it can only converge in a much
weaker, averaged sense. This also means that most of the traditional analytical tools for studying the
long-time behavior fail on this problem.

In this paper we identify the candidate limit profile as the solution of a certain one-dimensional
boundary value problem which can be solved explicitly. We distinguish two nontrivial regimes.
In the first, the
transitional regime
, precipitation is restricted to a bounded region in space. We
prove that the concentration converges to a single asymptotic profile. In the second, the
supercritical
regime
, we show that the concentration converges to one of a one-parameter family of asymptotic
profiles, selected by a solvability condition for the one-dimensional boundary value problem. Here,
our convergence result is only conditional: we prove that if convergence happens, either pointwise
for the concentration or in an averaged sense for the precipitation function, then the other field
converges likewise; convergence in concentration is uniform, and the asymptotic profile is indeed
the profile selected by the solvability condition. A careful numerical study suggests that the actual
behavior of the equation is indeed the one suggested by the theorem.
Fourier uniqueness pairs of powers of integers
Authors: Ramos João P. G. , Sousa Mateus
Published: April 2022

We prove, under certain conditions on

{(\alpha,\beta)}

, that each Schwartz function

{f}

such that

{f(\pm n^{\alpha}) = \widehat{f}(\pm n^{\beta}) = 0}

for all

{n \ge 0}

must vanish identically, complementing a series of recent results involving uncertainty principles, such as the pointwise interpolation formulas by Radchenko and Viazovska and the Meyer–Guinnand construction of self-dual crystaline measures.
О совместной универсальности дзета-функций Римана и Гурвица
Authors: Laurinčikas Antanas
Published: April 2022

В 2007 г. Г. Мишу доказал теорему универсальности о совместном
приближении пары аналитических функций сдвигами
$(\zeta(s+i\tau),\zeta(s+i\tau,\alpha))$ дзета-функции Римана
и дзета-функции Гурвица с трансцендентным параметром $\alpha$.
В статье получена аналогичная теорема о приближении сдвигами
$$
(\zeta_{u_N}(s+ikh_1),\zeta_{u_N}(s+ikh_2,\alpha)),\qquad
k\in\mathbb{N}\cup\{0\},\quad h_1,h_2>0,
$$
где $\zeta_{u_N}(s)$
и $\zeta_{u_N}(s,\alpha)$ - абсолютно сходящиеся ряды Дирихле
и при $N\to\infty$ в среднем стремятся к $\zeta(s)$ и
$\zeta(s,\alpha)$ соответственно.
Библиография: 11 названий.
Пример конциркулярного векторного поля на локально конформно-келеровом многообразии
Authors: Kirichenko Vadim Fedorovich , Arsen'eva Ol'ga Evgen'evna , Rustanov Aligadzhi Rabadanovich
Published: April 2022

В работе построен пример конциркулярного векторного поля
на локально конформно-келеровом многообразии и
изучен геометрический смысл его характеристической формы.
Доказано, что вектор Ли локально конформно-келерова многообразия
постоянной кривизны является конциркулярным векторным полем.
Доказано также, что класс локально конформно-келеровых многообразий
постоянной кривизны является подклассом
класса локально конциркулярно приближенно келеровых многообразий.
Получены условия, при которых локально конформно-келерово
многообразие постоянной кривизны рекуррентно.
Библиография: 7 названий.
Простые идеалы в мультипликативно идемпотентных полукольцах
Authors: Vechtomov Evgeniy Mikhailovich , Petrov Andrei Aleksandrovich
Published: April 2022

Рассматриваются структурные свойства
мультипликативно идемпотентных полуколец.
Получены базовые результаты о простых идеалах
в мультипликативно идемпотентных полукольцах. В основной теореме
описаны коммутативные мультипликативно идемпотентные полукольца
с нулем, в которых все простые идеалы максимальны:
с точностью до изоморфизма такие полукольца исчерпываются
прямыми произведениями булева кольца и обобщенной булевой решетки.
Приведены примеры,
показывающие существенность условий коммутативности и наличия нуля.
Библиография: 8 названий.
Low total gamma globulin level discovery at diffuse large B-cell lymphoma diagnosis predicts high risk of infection-related death: data from a monocentric retrospective study
Authors: Nguyen Alexandre , Martin-Silva Nicolas , De Boysson Hubert , Deshayes Samuel , Gac Anne-Claire , Reboursière Emilie , Damaj Gandhi , Aouba Achille
Published: April 2022

OBJECTIVE: Diffuse large B-cell lymphoma can complicate the course of B-cell primary immunodeficiencies or induce lowering of total gamma globulin levels, whose clinical status as an effective secondary immunodeficiency remains unspecified. This study aimed to assess the frequency, and clinical and prognostic relevance of the low total gamma-globulin levels discovered at diagnosis of diffuse large B-cell lymphoma.
RESULTS: In a 2-year monocentric retrospective study, 96 patients diagnosed with diffuse large B-cell lymphoma who had a serum electrophoresis were included. Patients were divided into those with lower (L-TGL and higher (H-TGL) total gamma-globulin levels (total gamma-globulin levels ≤5.5 g/l and >5.5 g/l) and compared for outcomes, including fatal infectious events.  Twelve (12.5%; 8 males; age median  68 years, range 55—82 years) exhibited L-TGL. There was no difference between the both groups regarding demographics, Ann Arbor lymphoma stage, inflammatory parameters or chemotherapy regimen. However, overall death rates (10/12, 83.3% versus 22/96, 26.2%; p = 0.03) and infection-related death rates (10/12, 83% versus 6/96, 6.2%; p <0.001) were significantly higher in the L-TGL group.
CONCLUSION: We demonstrate for the first time the strong negative impact of L-TGL on overall and infection-related mortality in diffuse large B-cell lymphoma. Prospective studies should distinguish immunodeficiencies secondary to the lymphoma from pre-existing humoral primary immunodeficiencies, using biomolecular testing and post-treatment total gamma-globulin level monitoring, to determine the best management strategy for infectious risk during diffuse large B-cell lymphoma treatment in the context of L-TGL.
La possibilité de l’espoir chez Michel Houellebecq
Authors: Liu Xinyi
Published: April 2022

The possibility of hope in Michel Houellebecq Often considered depressive, Michel Houellebecq’s writing seems to be at the antipodes of hope, even if fragile. In this article, we will attempt to explore the three levels of hope in the author’s work. Hope in Houellebecq’s writing is first presented in a derisory way as a variant of an illusion. It constitutes an evil associated with sexual desires in contemporary hyper-liberalist society. Then, the author stages a positivist utopia, that of immortal neo-humans. But hope does not exist in this post-human society. Finally, by freeing himself from all illusory hopes, the author intends to seek hope in the present, in the manner of Schopenhauerian contemplation. He uses an approach that is both clinical and pathetic and gives a new form to hope that hopes for the unhoped-for.
A finding that is not clear what will emerge when you see it: Hypoalbuminemia
Authors: VURAL KESKİNLER Miraç , ŞİMDİ Ertunç , İĞNECİ Ender
Published: April 2022

Malnutrition can cause hypoalbuminemia. Gastrointestinal malignancies are among the causes of protein-losing enteropathy. Herein, we presented a case of protein-losing enteropathy due to gastrointestinal malignancy presenting with symptoms such as hypoalbuminemia and oedema in the hands and legs.
COVID-19 Presenting with Diabetic Ketoacidosis: A case report
Authors: GÖKMEN İffet Beril , YİĞİT Sidelya Ecem , OKUTURLAR Yıldız , KÖKSAL İftihar
Published: April 2022

Diabetic ketoacidosis (DKA) is one of the most common fatal complications of diabetes and is often associated with severe underlying disease. The COVID-19 infection follows an intense course in patients with comorbidities such as diabetes. Herein we presented a case of diabetic ketoacidosis caused by COVID-19 infection.
Primary Mediastinal Large B-Cell Lymphoma: Case Report
Authors: CANDAR Ömer , ÖZKALEMKAŞ Fahir , OZKOCAMAN Vildan , ÇUBUKÇU Sinem , ERSAL Tuba
Published: April 2022

Primary mediastinal large B-cell lymphoma is a rare tumour. Patients present with dyspnea, cough, dysphagia and superior vena cava syndrome. Thus, most patients are diagnosed early in stages 1-2. We reported a 19-year-old male patient diagnosed with primary mediastinal large B-cell lymphoma.
A Case of Proteinuria Developing Secondary to Solitary Renal Vein Thrombosis Due to Oral Contraceptive Use
Authors: GÖRÜNEN Ahmet , SEZEN Mehmet , YILDIZ Abdülmecit , ORUÇ Ayşegül , DİLEK Kamil , GÜLLÜLÜ Mustafa , YAVUZ Mahmut , GÜLLÜLÜ Saide , ERSOY Alparslan
Published: April 2022

Renal vein thrombosis (RVT) is the presence of thrombi in major renal veins or their branches and is a rare clinical entity. RVT is one of the common thrombotic complications of nephrotic syndrome or renal cell carcinoma. Hormonal contraception can also rarely cause this complication. Herein, we presented a case of renal vein thrombosis accompanied by subnephrotic proteinuria after oral contraception.
Pulmonary Embolism Developing Despite the Use of Anticoagulants in Covid-19 Pneumonia: A case report
Authors: GÖKMEN İffet Beril , YİĞİT Sidelya Ecem , OKUTURLAR Yıldız , KÖKSAL İftihar
Published: April 2022

COVID-19 pneumonia is one of the diseases that can cause hypercoagulability. It is not uncommon to encounter arterial or venous thromboembolic events during COVID-19 infection. In this case, we wanted to discuss a case of a pulmonary embolism due to COVID-19 infection, which developed despite the usage of therapeutic dosage of anticoagulants. A 41-year-old male patient with a known diabetes mellitus was admitted to our clinic with complaints of cough and headache. The patient was found to be COVID-19 positive. Along with steroid treatment, 2x6,000 IU enoxaparin treatment was initiated for the patient. He developed sudden respiratory distress and showed an increase in oxygen demand. D-dimer value increased abruptly to 35.2 mg/L. Pulmonary CT angiography showed multiple bilateral subsegmental pulmonary embolisms. Since COVID-19 infection can cause arterial and venous thromboembolic events in patients following up with COVID-19 pneumonia, prophylactic anticoagulation should be initiated in hospitalized patients. Attention should be paid to signs of bleeding, and dose adjustment should be made by monitoring coagulation parameters.