bluuebunny/crossref_metadata_2025 huggingface dataset:
A new remarkable Vanilla Mill. (Orchidaceae) species endemic to the Espinhaço Range, Brazil: its phylogenetic position and evolutionary relationships among Neotropical congeners
Authors: Pansarin Emerson Ricardo , Menezes Euler da Luz Fernandes
Published: June 2023

During surveys conducted on Neotropical Vanilla, a new endemic species was found in the Brazilian campos rupestres of the Espinhaço Range. Here, this new remarkable Vanilla species, namely V. rupicola Pansarin & E.L.F. Menezes, is described and illustrated. A phylogeny for Vanilla is presented and the relationships between Neotropical species are discussed. The position of V. rupicola among Neotropical Vanilla is discussed within an evolutionary context. Vanilla rupicola is recognized by its rupicolous habit, its reptant stems, and its sessile and rounded leaves. This remarkable new taxon emerges in a clade that includes V. appendiculata Rolfe and V. hartii Rolfe. Vegetative and floral features support a close relationship between V. rupicola and sister taxa, mainly regarding the apical inflorescence (V. appendiculata), the type of appendages of the central crest of the labellum, and the labellar color pattern. Phylogenetic inference suggests that the circumscription of Neotropical Vanilla groups needs revision.
The systematic position of Cryptopotamon anacoluthon (Kemp, 1918), with the description of a new species of Sinolapotamon Tai & Sung, 1975 (Crustacea, Decapoda, Brachyura, Potamidae) from southern China
Authors: Lu Yuan-Biao , Zhang Yi-Xuan , Zou Jie-Xin
Published: June 2023

The systematics of the potamid freshwater crab Cryptopotamon anacoluthon (Kemp, 1918) is clarified, and its generic position in Sinolapotamon Tai & Sung, 1975, is confirmed based on morphological comparisons, geographical information and phylogenetic analyses. A new species of Sinolapotamon, Sinolapotamon cirratumsp. nov. is described from the Guangxi Zhuang Autonomous Region of China. Sinolapotamon cirratumsp. nov. is distinguished from its congeners by the combination of characters of its carapace, third maxilliped, anterolateral margin, and unique male first gonopod. Phylogenetic analyses based on partial COX1, 16S rRNA and 28S rRNA genes also support the species as new.
Spiritualité explicite, préférence pour le naturel et croyances à l’efficacité de l’homéopathie
Authors: Guinaudeau Claire , Galharret Jean-Michel , Roussiau Nicolas , Renard Elise
Published: June 2023

Afin d’examiner ce qui pousse les individus à développer certaines croyances sur l’homéopathie et à utiliser cette médecine alternative et complémentaire (MAC), cette étude se concentre sur la spiritualité explicite et la préférence pour le naturel. Elle a été conduite auprès de 367 participants, 207 de sexe féminin et 160 de sexe masculin. Les résultats de cette étude montrent que la spiritualité explicite et la préférence pour le naturel des individus sont significativement liées à leurs croyances selon lesquelles l’homéopathie soulage les symptômes et améliore le bien-être. Ceux-ci expliquent également de manière significative l’utilisation de cette médecine alternative et complémentaire.
Patients lourdement dépendants, une pression partagée pour les professionnels et les proches aidants ?
Authors: Curt Véronique
Published: June 2023

Faire ensemble, c’est se connaître et être curieux de nos places respectives. Mais il n’y a pas la même résonance selon que l’on occupe une place et une fonction professionnelle ou une place d’aidant. Il s’agira de bien définir le rôle et les limites de chacun, entendre les besoins de l’autre et exprimer les siens. C’est peut-être cela l’enjeu de la pluridisciplinarité : savoir échanger, nommer ce pour quoi nous sommes là ensemble, et pouvoir solliciter les compétences de chacun.
Consentement et emprise : figures d’une incompatibilité
Authors: Lazerges Christine , Bouilloud Jean-Philippe
Published: June 2023

Résumé L’approche méthodologique plurielle, qui fut celle de la Commission indépendante sur les abus sexuels dans l’Église catholique (Ciase), est reprise pour démontrer combien les vices du consentement tels qu’ils sont définis par le droit sont insuffisants à englober l’emprise. La force de la parole des victimes a permis une meilleure compréhension des phénomènes d’emprise. L’emprise ne suppose ni la violence, ni la contrainte, ni la menace, ni la surprise pour annihiler le consentement. L’emprise est plus subtile, elle se nourrit de la domination, de l’ascendant, du pouvoir de celui dont vous êtes victime. Dans le domaine des violences sexuelles elle doit entrer nommément dans la loi. Les dégâts de l’emprise, à l’origine d’une honte et d’une culpabilité destructrices, sont considérables. Ces dégâts, qui vont jusqu’à « l’impossibilité d’être », obligent à construire une justice restaurative étatique et sociétale.
Géopolitiques et géographies
Authors: Théry Hervé
Published: June 2023

Une géopolitique de l’Amérique latine prenant en compte la géographie doit partir des disparités du peuplement qui opposent des régions «pleines» et « vides », en tenant compte des données naturelles et des modalités de l’occupation historique du continent. Cette analyse doit être toutefois complétée par celle des axes qui relient les premiers en traversant les seconds, et des nouveaux itinéraires sont apparus dans les dernières décennies. Ces approches permettent enfin une synthèse sous deux formes, une reprise modernisée du traditionnel croquis régional de synthèse et un schéma plus épuré des pôles, axes et espaces transnationaux du continent.
Commerce, communauté et dons numériques
Authors: Elder-Vass Dave
Published: June 2023

Il peut être tentant de considérer que les dons numériques occupent un espace social dans lequel le commerce est absent et la communauté (omni)présente. Mais cela reviendrait à tomber dans le piège du dualisme commerce/communauté que cet article cherche à remettre en question. Les dons numériques nous incitent plutôt à remettre en question les multiples implications de dualisme et ouvrent la voie à une autre conception de l’économie, dans laquelle celle-ci est considérée comme profondément sociale, avec des aspects à la fois commerciaux et non commerciaux, et profondément enchevêtrée avec les communautés de formes très diverses. Ainsi existe-t-il un large éventail de pratiques de don, qui ne fonctionnent pas toutes de la même manière et n’ont pas toutes les mêmes implications et, dans certains contextes, certaines de ces pratiques constituent une alternative prometteuse à l’échange de marchandises.
Communs, bien commun et décroissance
Authors: Latouche Serge
Published: June 2023

Le mouvement des objecteurs de croissance ne s’est pas directement impliqué dans le débat sur les « commons », les biens communs, parce que la décroissance ne se propose rien moins que de « sortir de l’économie ». La sortie de l’économie, et donc de la marchandisation de la nature et du social, concerne néanmoins les biens communs (eau, air, terre, environnement, espaces urbains, espaces verts, paysages, éducation, culture, etc.), et va même au-delà. La logique systémique de croissance, qui est aussi celle de la guerre de tous contre tous et de la guerre de tous contre la nature, engendre le changement climatique, la fin de la biodiversité, pour aboutir à la sixième extinction des espèces. Une fois liquidé l’objectif de la croissance, le bien commun, et donc l’extension des communs, réapparaît comme l’horizon de toute organisation sociale.
Une égalité sans équivalence. Pour une anthropologie du commun
Authors: Walker Harry
Published: June 2023

Cet article propose d’élaborer une conception amazonienne du commun et de penser le défi que pose cette dernière à la pensée occidentale sur l’individualisme et l’égalité. Il y est suggéré qu’un certain nombre de traits distinctifs de la socialité amazonienne urarina pourrait trouver leur origine dans un refus partagé des facteurs qui donnent lieu à des relations d’équivalence entre les gens. Ce type de singularisme, ou « d’individualisme sans individus », résulte d’une conception du commun comme ressource collective antithétique de la propriété, dans laquelle la subjectivité est façonnée plus largement en relation avec des ressources écologiques et affectives que produite collectivement et continuellement. Cela inclut non seulement les ressources économiques partagées, tels que la terre ou les animaux, mais aussi des manières d’organiser et de produire des relations affectives, cognitives et linguistiques, des « communs » de formes variées qui ne réduisent jamais les différences à un sujet abstrait, tel que celui que la figure de l’individu dans le libéralisme ou celle du collectif dans le socialisme.
Capitalisme de la fermeture et communs négatifs
Authors: Monnin Alexandre
Published: June 2023

En s’appuyant sur la notion de communs négatifs développée dans des travaux antérieurs, et sur les analyses de Kasia Paprocki à propos de la situation de l’agriculture sur les côtes du Bangladesh et de Sarah Knuth sur le rétrofit urbain, cet article propose une voie destinée à « politiser le renoncer » au-delà de l’horizon ouvert par ce que l’on pourrait appeler un « capitalisme de la fermeture ».
« Ne pas mettre le public devant notre complexité alors qu’il est déjà en complexité », le choix girondin de la convention territoriale d’exercice concerté (CTEC)
Authors: Bost Christine
Published: June 2023

Ne pas mettre le public devant notre complexité, tel est le choix fait par le conseil départemental de la Gironde. Face à l’agencification du social, tendant à transformer les collectivités territoriales en simples opérateurs de l’État, la Gironde a pris à cœur l’expression de chef de file et développé une coopération par le bas des collectivités territoriales. Elle l’a fait non tant par le recours à la conférence territoriale de l’action publique ( ctap ) – qui n’a pas prouvé son utilité et est un échec relatif – que par les conventions territoriales d’exercice concerté ( ctec ). Ces dernières, dans le cadre d’un projet commun d’accueil inconditionnel des usagers, organisent un réseau entre collectivités territoriales permettant une bonne orientation des populations fragilisées. Outil au service des usagers et des agents, il permet d’incarner le schéma d’amélioration de l’accessibilité au service public.
Existence results for nonlinear multi-term impulsive fractional $ q $-integro-difference equations with nonlocal boundary conditions
Authors: Agarwal Ravi P. , Ahmad Bashir , Al-Hutami Hana , Alsaedi Ahmed
Published: June 2023

This paper is concerned with the existence of solutions for a nonlinear multi-term impulsive fractional $ q $-integro-difference equation with nonlocal boundary conditions. The appropriated fixed point theorems are applied to accomplish the existence and uniqueness results for the given problem. We demonstrate the application of the obtained results with the aid of examples.
Single machine and group scheduling with random learning rates
Authors: Wang Dingyu , Ye Chunming
Published: June 2023

This study mainly considers the scheduling problems with learning effects, where the learning rate is a random variable and obeys a uniform distribution. In the first part, we introduce a single machine model with location-based learning effects. We have given the theoretical proof of the optimal solution for the five objective functions. In the second part, we study the problem with group technology. Both intra-group and inter-group have location-based learning effects, and the learning rate of intra-group jobs follows a uniform distribution. We also give the optimal ranking method and proof for the two problems proposed.
Modeling income distribution: An econophysics approach
Authors: Khamnei Hossein Jabbari , Nikannia Sajad , Fathi Masood , Ghorbani Shahryar
Published: June 2023

This study aims to develop appropriate models for income distribution in Iran using the econophysics approach for the 2006–2018 period. For this purpose, the three improved distributions of the Pareto, Lognormal, and Gibbs-Boltzmann distributions are analyzed with the data extracted from the target household income expansion plan of the statistical centers in Iran. The research results indicate that the income distribution in Iran does not follow the Pareto and Lognormal distributions in most of the study years but follows the generalized Gibbs-Boltzmann distribution function in all study years. According to the results, the generalized Gibbs-Boltzmann distribution also properly fits the actual data distribution and could clearly explain the income distribution in Iran. The generalized Gibbs-Boltzmann distribution also fits the actual income data better than both Pareto and Lognormal distributions.
$ \mathcal{L}_{2}-\mathcal{L}_{\infty} $ control for memristive NNs with non-necessarily differentiable time-varying delay
Authors: Wang Jingya , Zhu Ye
Published: June 2023

This paper investigates $ \mathcal{L}_{2}-\mathcal{L}_{\infty} $ control for memristive neural networks (MNNs) with a non-necessarily differentiable time-varying delay. The objective is to design an output-feedback controller to ensure the $ \mathcal{L}_{2}-\mathcal{L}_{\infty} $ stability of the considered MNN. A criterion on the $ \mathcal{L}_{2}-\mathcal{L}_{\infty} $ stability is proposed using a Lyapunov functional, the Bessel-Legendre inequality, and the convex combination inequality. Then, a linear matrix inequalities-based design scheme for the required output-feedback controller is developed by decoupling nonlinear terms. Finally, two examples are presented to verify the proposed $ \mathcal{L}_{2}-\mathcal{L}_{\infty} $ stability criterion and design method.
La odisea amazónica de José de Iturre. Agencia y fracaso en las fronteras ibéricas (1750-1770)
Authors: Ibáñez Bonillo Pablo
Published: June 2023

Este artículo analiza las trayectorias de varios personajes en las fronteras amazónicas a mediados del siglo XVIII. A partir de una correspondencia inédita archivada en el Arquivo Público do Estado do Pará (Brasil), el texto estudia las dinámicas sociales en la frontera situada en la desembocadura del río Putumayo, reconstruyendo las relaciones establecidas entre misioneros, viajeros, indígenas y otros. Se explora la circulación de personas y mercancías a través de la frontera, así como las redes de competencia y colaboración entre los distintos actores.
José Ignacio Moreno contra «el partido filosófico de nuestro siglo» (Perú, 1822)
Authors: Escrig Rosa Josep
Published: June 2023

El artículo analiza la primera serie de las Cartas peruanas entre Filaletes y Eusebio…, del eclesiástico José Ignacio Moreno, redactadas en 1822. Se demuestra que el autor recurrió de manera sistemática a algunas de las principales obras del antifilosofismo europeo para formarse y componer sus misivas. El espíritu ilustrado de Moreno se compaginó con un odio hacia los postulados librepensadores de ciertos filósofos del Setecientos. Este adaptó de manera original el conocimiento de los apologistas católicos del Viejo Mundo a la realidad del Perú independiente, dando así lugar a una relectura de sus aportaciones. A través de las Cartas peruanas pretendía erigirse en el guardián de la ortodoxia romana en Sudamérica, sostener la intolerancia religiosa y abogar por la autonomía de la Iglesia.
Cárceles de papel. Prisiones y fotografías en la provincia de Buenos Aires (Argentina) a fines del siglo XIX
Authors: Yangilevich Melina
Published: June 2023

El trabajo analiza la organización y el funcionamiento de los laboratorios fotográficos en las cárceles ubicadas en la provincia de Buenos Aires durante los primeros años de la década de 1880. Su propósito consiste en indagar de qué manera las prácticas vinculadas a la identificación y al control de las personas procesadas y condenadas insertas en el sistema penitenciario provincial contribuyó al proceso de consolidación estatal durante las últimas décadas del siglo XIX y las primeras del XX. Para ello se analiza el papel y la trayectoria de Antonio Pozzo, el fotógrafo a cargo de la propuesta, las dificultades encontradas durante la implementación de la misma y los conflictos que se generaron con diversos funcionarios.
A theory of dark energy that matches dark matter
Authors: Wang Huai-Yu
Published: June 2023

In this paper, a theory of dark energy is proposed that matches dark matter. The relativistic quantum mechanics equations reveal that free particles can have negative energies. We think that the negative energy is the dark energy, which behaves as dark photons with negative energies.
In this work, the photon number states are extended to the cases where the photon number can be negative integers, called negative integer photon states, the physical meaning of which are that the photons in such a state are of negative energy, i.e., dark photons. The dark photons constitute
dark radiation, also called negative radiation. The formalism of the statistical mechanics and thermodynamics of the dark radiation is presented. This version of dark energy is of negative temperature and negative pressure, the latter regarded as responsible for the accelerate expansion of
the universe. It is believed that there is a symmetry of energy-dark energy in the universe. In our previous work, the theory of the motion of the matters with negative kinetic energy was presented. In our opinion, the negative kinetic energy matter is dark matter. In the present work, we
demonstrate that the dark substances absorb and release dark energy. In this view, the dark matter and dark energy match. Therefore, there is a symmetry of matter-energy match and dark matter-dark energy match in the universe. We present the reasons why the negative kinetic energy systems
and negative radiation are dark to us.
Many-body theories for negative kinetic energy systems
Authors: Wang Huai-Yu
Published: June 2023

In the author’s previous works, it is derived from the Dirac equation that particles can have negative kinetic energy (NKE) solutions, and they should be treated on an equal footing as the positive kinetic energy (PKE) solutions. More than one NKE particles can make up a stable
system by means of interactions between them and such a system has necessarily negative temperature. Thus, many-body theories for NKE systems are desirable. In this work, the many-body theories for NKE systems are presented. They are Thomas‐Fermi method, Hohenberg‐Kohn theorem,
Khon‐Sham self-consistent equations, and Hartree‐Fock self-consistent equations. They are established imitating the theories for PKE systems. In each theory, the formalism of both zero temperature and finite negative temperature is given. In order to verify that tunneling electrons
are of NKE and real momentum, an experiment scenario is suggested that lets PKE electrons collide with tunneling electrons.
Prevalence and Psychosocial Predictors of Cyberchondria in Nigeria During the COVID-19 Pandemic
Authors: Abikoye Gboyega Emmanuel , Lawal Abiodun Musibau
Published: June 2023

The uncertainties surrounding the COVID-19 pandemic and frequently changing information about the virus heighten the potentials cyberchondria. This study investigated the prevalence and predictors of cyberchondria among Nigerians during the COVID-19 pandemic. Participants (n=406, 268 males, Mage = 37.68 years, SD = 10.78) completed an online survey consisting of validated measures of cyberchondria, health anxiety, neuroticism, quality of life, medical history, and socio-demographic information. Participants (Mscore= 27.44±7.31) reported moderate to high levels of cyberchondria. Results of hierarchical regression showed that although all predictor variables collectively predicted cyberchondria with 22% of explained variance, the strongest predictors of cyberchondria were health anxiety and the number of prior hospital visits. Reducing the level of cyberchondria during the COVID-19 pandemic requires the ability to deal with health-related fear and effectively managing the uncertainties surrounding online health information.
Real Impact of the Blockchain in Securing a ToIP Network
Authors: Sonon Sekoude Jehovah-nis Pedrie , Djara Tahirou , Ousmane Matine Abdoul , Sobabe Abdou-Aziz
Published: June 2023

Telephony over IP (ToIP) is a cost-saving communication technology based on voice over IP (VoIP) that enables enterprises to reduce communication fees. However, ToIP faces many security threats due to its IP-based nature. This work aims to improve ToIP security using cryptography and blockchain technology. The authors propose a secure approach to user registration, authentication, communication session establishment, and communication data storage. The proposed solution leverages blockchain technology to ensure the integrity, confidentiality, and availability of communication data. By implementing this solution, the researchers aim to enhance the security of ToIP networks and protect them from cyber threats. This approach provides a secure and reliable way to support ToIP services while preserving confidentiality and privacy.
Cooperative IDS for Detecting Collaborative Attacks in RPL-AODV Protocol in Internet of Everything
Authors: Babu Erukala Suresh , Padma Bhukya , Nayak Soumya Ranjan , Mohammad Nazeeruddin , Ghosh Uttam
Published: June 2023

Internet of everything (IoET) is one of the key integrators in Industry 4.0, which contributes to large-scale deployment of low-power and lossy (LLN) networks to connecting people, processes, data, and things. The RPL is one of the unique standardized routing protocols that enable efficient use of smart devices energy, compute resources to address the properties and constraints of LLN networks. The authors investigate the RPL-AODV routing protocol's performance in combining the advantages of both RPL and AODV routing protocol, which works together in a low power resource-constrained network. The main challenging issue is collaborating the AODV and RPL routing protocol in the LLN network. This paper also models the collaborative attacks such as wormhole, blackhole attack for AODV, and rank and sinkhole attacks to exploit the vulnerability of RPL protocol. Finally, the cooperative IDS combining specification-based and signature-based IDS is proposed to detect the collaborative attacks against the RPL-AODV routing protocol that effectively monitors and provides security to the LLN networks.
Task-Technology Fit and ICT Use in Remote Work Practice During the COVID-19 Pandemic
Authors: Kamdjoug Jean Robert Kala , Tchana Paule Bridelle Tchatat , Wamba Samuel Fosso , Teutio Arielle Ornela Ndassi
Published: June 2023

This study examines the use of information and communications technology (ICT) in remote work practice during the COVID-19 pandemic by integrating task-technology fit theory and the post-acceptance model of IS continuance into a research framework. In addition, it operationalizes the technological characteristics of TTF (task-technology fit) with the technology acceptance model (TAM) and the diffusion of innovation (DOI) theory. The methodology to test the research model takes support from the partial least squares structural equation modeling (PLS-SEM) method using a sample of 320 employees. The results show that TAM significantly explains TTF. Furthermore, there is a positive impact of ICT use on individual and organizational performance. User satisfaction has the most significant effect on individual performance, organizational performance, and IS continuance intention. The authors provide some managerial implications for addressing the challenges of remote work related to ICT disruptions for the post-COVID-19 period.
Critical Care Echocardiography
Authors: Decker Christopher , Yong Valeda , Linahan Julianne E.
Published: June 2023

Ultrasonography is increasingly applied in the critical care setting. With advancements in technology, ultrasonography has become easier to use, with smaller machines, and more fundamental to patient assessment. Ultrasonography is a hands-on tool that brings real-time, dynamic information to the bedside. Patients in the critical care setting often have unstable hemodynamics or a tenuous respiratory status; thus, the use of ultrasonography to augment the assessment greatly improves patient safety. This article explores how to differentiate the etiology of shock with the adjunct of critical care echocardiography. In addition, the article examines how various ultrasonography techniques can be used to diagnose other life-threatening cardiac conditions, such as pulmonary embolism or cardiac tamponade, and the role of echocardiography in cardiopulmonary resuscitation. Critical care providers can add echocardiography and the information it provides to their repertoire to improve diagnosis, treatment, and patient outcomes.
Focused and Extended Focused Assessment With Sonography for Trauma
Authors: Blank-Reid Cynthia , Zappile Denise M. , Santora Thomas A.
Published: June 2023

Timing is crucial when caring for an injured patient, and the evaluation requires a systematic, rapid, and thorough assessment to identify and treat immediate life-threatening injuries. An integral component of this assessment is the Focused Assessment with Sonography for Trauma (FAST) and the extended FAST (eFAST). These assessments allow for a rapid, noninvasive, portable, accurate, repeatable, and inexpensive means of diagnosing internal injury to the abdomen, chest, and pelvis. Understanding the basic principles of ultrasonography, having a thorough familiarity with the equipment, and being knowledgeable in anatomy allow the bedside practitioner to use this tool to rapidly assess injured patients. This article reviews the basic tenets that underpin the FAST and eFAST evaluations. Practical interventions and tips are provided to assist novice operators—all with the goal of decreasing the learning curve.
Introduction to Point-of-Care Ultrasonography
Authors: Liu Dorothy , Roth Erica , Pathak Abhijit
Published: June 2023

Medical ultrasonography was first used as a diagnostic tool in 1942 by Theodore Karl Dussik to visualize brain structures. Use of ultrasonography broadened to the field of obstetrics in the 1950s and has since expanded to many other medical special-ties owing to ease of use, reproducibility, low cost, and lack of radiation. Advancements in ultrasonography technology have allowed clinicians to perform procedures with greater accuracy and to characterize tissue better than ever before. Piezoelectric crystals used to produce ultrasound waves have been replaced by silicon chips; artificial intelligence can be used to mitigate user variability; and more portable ultrasound probes are available for use with mobile devices. Ultrasonography requires training to be used appropriately, and patient and family education are crucial when performing an examination. Although some data are available regarding the amount of training needed for users to reach proficiency, this topic remains controversial and no standard currently exists.
Preliminary survey on the occurrence of microplastics in bivalve mollusks marketed in Apulian fish markets
Authors: Quaglia Nicoletta Cristiana , Capuozzo Flavia , Ceci Edmondo , Cometa Stefania , Di Pinto Angela , Mottola Anna , Piredda Roberta , Dambrosio Angela
Published: June 2023

Microplastics (MPs) are a relevant threat to food safety because they are ingested by humans through various foods. Bivalves are at high risk of microplastic contamination due to their filter-feeding mechanism and pose a risk to consumers as they are ingested whole. In this work, microplastics were detected, quantified, identified, and classified in samples of mussels (Mytilus galloprovincialis) and oysters (Crassostrea gigas) marketed in the Apulia region. The total number of plastic debris was 789 particles in the mussel samples and 270 particles in the oyster samples, with size ranging from 10 to 7350 µm. Fragments with size within the category of 5-500 µm were the predominant findings in both species, with blue as the predominant color in mussels and transparent in oysters; most of the debris was polyamide and nylon polymers in the mussels and chlorinated polypropylene in the oysters. These results show that mussel and oyster samples purchased at fish markets are contaminated with microplastics. The sources may be diverse and further studies are needed to assess the impact of the marketing stage on microplastic contamination in bivalves to better define the human risk assessment associated with microplastic exposure from bivalves consumption.
Cadmium, lead, and mercury in two commercial squid species from the north Adriatic Sea (central Mediterranean): contamination levels and health risk assessment
Authors: Varrà Maria Olga , Husáková Lenka , Patočka Jan , Ianieri Adriana , Ghidini Sergio , Zanardi Emanuela
Published: June 2023

In this study, lead (Pb), cadmium (Cd), and total mercury (Hg) concentrations in European squids (Loligo vulgaris) and flying squids (Todarodes sagittatus) from the northern Adriatic Sea (Italy) were analyzed. The risk of the Italian population being exposed to potentially hazardous metal concentrations through the consumption of these products was also assessed. Compared to European squids, flying squids showed three times higher total Hg concentrations and one hundred times higher Cd concentrations to the point that more than 6 and 25% of the samples exceeded the maximum Hg and Cd limits established by the current legislation. From the evaluation of dietary exposure levels, it emerged that the consumption of flying squids was associated with the highest Pb intake by children and, consequently, with the lower margin of exposure values in relation to the risk of neurotoxicity (margin of exposure=33). Consumption of flying squids, especially by children, was also associated with higher intakes of Cd, inorganic, and methyl-Hg, which, respectively, accounted for 156, 113, and 23% of the tolerable weekly intakes established for these contaminants at European level. The obtained results raise concern and it may be necessary to provide specific dietary advice on the moderate dietary consumption of some cephalopod species, especially to the youngest and most vulnerable segment of the population. However, besides the highly conservative deterministic method adopted in this study, a refined consumer exposure assessment should be performed through the probabilistic methodology, which is more suitable to represent the real exposure scenario.
On Bergman space zero sets. Editors’ comments on the article by Vaughan Jones
Authors: de la Harpe Pierre , Rădulescu Florin
Published: June 2023

This article has two purposes. The first one is to describe what the Editors know on how and when Vaughan Jones worked on the subject of the article published in the same volume. The starting point, in the late 1980’s, was his fascination for a formula giving Murray–von Neumann dimensions of Hilbert spaces of unitary representations of Fuchsian groups. Over the years, he discovered surprising relations of these dimensions with other domains of mathematics. The second purpose is to expose with some details a subject which plays an important role in Jones’ article: the irreducible
projective
unitary representations of

\operatorname{PSL}_2(\mathbf{R})

, which constitute a
continuous
family known as the discrete series, and which have interesting restrictions to various discrete subgroups of

\operatorname{PSL}_2(\mathbf{R})

.
Miscellaneous on commutants mod normed ideals and quasicentral modulus $I$
Authors: Voiculescu Dan-Virgil
Published: June 2023

We define commutants mod normed ideals associated with compact smooth manifolds with boundary. The results about the

K

-theory of these operator algebras include an exact sequence for the connected sum of manifolds, derived from the Mayer–Vietoris sequence. We also make a few remarks about bicommutants mod normed ideals and about the quasicentral modulus for the quasinormed

p

-Schatten–von Neumann classes 0 <

p

< 1.
Spectral triples and $\zeta$-cycles
Authors: Connes Alain , Consani Caterina
Published: June 2023

We exhibit very small eigenvalues of the quadratic form associated to the Weil explicit formulas restricted to test functions whose support is within a fixed interval with upper bound

S

. We show both numerically and conceptually that the associated eigenvectors are obtained by a simple arithmetic operation of finite sum using prolate spheroidal wave functions associated to the scale

S

. Then we use these functions to condition the canonical spectral triple of the circle of length

L = 2\log (S)

in such a way that they belong to the kernel of the perturbed Dirac operator. We give numerical evidence that, when one varies

L

, the low lying spectrum of the perturbed spectral triple resembles the low lying zeros of the Riemann zeta function. We justify conceptually this result and show that, for each eigenvalue, the coincidence is perfect for the special values of the length

L

of the circle for which the two natural ways of realizing the perturbation give the same eigenvalue. This fact is tested numerically by reproducing the first thirty one zeros of the Riemann zeta function from our spectral side, and estimate the probability of having obtained this agreement at random, as a very small number whose first fifty decimal places are all zero. The theoretical concept which emerges is that of zeta cycle and our main result establishes its relation with the critical zeros of the Riemann zeta function and with the spectral realization of these zeros obtained by the first author.
Binary subgroups of direct products
Authors: Bridson Martin R.
Published: June 2023

We explore an elementary construction that produces finitely presented groups with diverse homological finiteness properties – the
binary subgroups
,

B(\Sigma,\mu)<G_1\times\dots\times G_m

. These full subdirect products require strikingly few generators. If each

G_i

is finitely presented,

B(\Sigma,\mu)

is finitely presented. When the

G_i

are non-abelian limit groups (e.g. free or surface groups), the

B(\Sigma,\mu)

provide new examples of finitely presented, residually-free groups that do not have finite classifying spaces and are not of Stallings–Bieri-type. These examples settle a question of Minasyan relating different notions of rank for residually-free groups. Using binary subgroups, we prove that if

G_1,\dots,G_m

are perfect groups, each requiring at most

r

generators, then

G_1\times\dots\times G_m

requires at most

r \lfloor \log_2 m+1 \rfloor

generators.
Apelaciones sociales y publicidad actual: análisis de su eficacia y reflexiones desde el sector
Authors: Martín García Noemí , Alvarado López María Cruz , Martín García Alberto
Published: June 2023

En las últimas décadas las empresas han empezado a ser conscientes de la importancia que tiene adquirir una dimensión social y proyectarla a su público objetivo, convirtiéndola en contenidos dentro de sus comunicaciones comerciales. Este trabajo surge con el objetivo de conocer las apelaciones sociales utilizadas en las campañas más laureadas por la industria publicitaria española galardonas en los últimos años en los Premios a la Eficacia en la Comunicación Comercial— Premios Efi— y, además, recoge con carácter exploratorio la opinión que los profesionales del sector tienen sobre esta tendencia. Para ello, se desarrolla un estudio en dos partes: una primera de tipo cuantitativo aplicada sobre los anuncios galardonados en los últimos doce años en los citados premios; y una segunda de carácter cualitativo mediante la realización de entrevistas a profesionales de las agencias creativas, de medios y de los anunciantes. Los resultados ponen de manifiesto el carácter excepcional de “lo social” dentro de los premios y su escasa presencia. Únicamente el 21.5% de las campañas premiadas introduce algún contenido social, siendo las apelaciones procedentes de la realidad social las más utilizadas. Además, se detecta una valoración positiva del uso de apelaciones sociales en la publicidad por parte de los profesionales, siempre y cuando parta de una coherencia entre la realidad de la marca y las acciones sociales que transmite. Se constata que, aunque los temas sociales son un asunto recurrente en el mundo empresarial, la publicidad sigue priorizando su función comercial sin asumirse como institución social.
Population status and anthropogenic disturbances of forest elephants (Loxodonta cyclotis Matschie, 1900) in Nki National park and its environs, east region, Cameroon
Authors: Fonkwo Sylvie Nguedem , Fai Ndi Collins , Kinge Tonjock Rosemary
Published: June 2023

African elephants play important roles in both the natural and human worlds: ecologically as a keystone species, economically as drivers of tourism and culturally as icons of the African continent. Increasingly, elephant populations are threatened by poaching for ivory, human-elephant conflict, habitat loss and fragmentation, and isolation of populations. This study was carried out to estimate the population of forest elephants and determine the human threats to their population. Data was collected along eleven 2 Km line transects and reconnaissance walk as well as administration of semi-structured questionnaires. Results obtained indicated a mean dung pile of 6.0 boli/Km2. Elephant density, thus, was 0.14 elephant/km2, translated to 428 (217-897) individual elephants. The main threats on elephant population with their percentage acceptance were identified to be non-respect of law enforcement (94.4%), hunting for bushmeat (92.5%), hunting for ivory (91.6%), lack of a management plan (73.8%), logging (68.2%) and road construction (43.0%). It was therefore concluded that there is a reduction in elephant population in the park from 565 in 2015 to 428 in 2021. Thus, it is recommended that increased law enforcement, surveillance and the setting up of constant and long-term monitoring programs be carried out in the park.
Fishing methods, catches composition and exploited biomass in the Aby lagoon (Adiaké, Côte d’Ivoire)
Authors: N’Dri Kouamé Marcel , Kouassi Koffi Dongo , Brou Gboko Konan Gatien , Yao Kouakou
Published: June 2023

Ivorian lagoon water bodies contribute to the fight against food insecurity through fisheries. They provide fresh and competitive products to the local population. Thereby, strategies for their rational and sustainable exploitation must be put in place. This study aimed at contributing to the improvement of fishing activities in the Aby lagoon. It is the result of three months of surveys (from January to March 2020) with the fishermen and the fisheries administration. It appears that fishing is practiced by indigenous peoples. The most represented were aged over 45 years old (71.30%). Gillnets (65.59%) and nailed plank canoes (67%) were the most used. However, Aly nets (5.63% of fishing gears types) remain the most productive providing 80% of catches. The main fish species recorded were Ethmalosa fimbriata (Clupeidae), Elops lacerta (Elopidae) and Sarotherodon melanotheron (Cichlidae). However, the effective management of the water body still remains a major concern. Indeed, constraints were mainly: the non-submission of individual fishermen to the fisheries administration, the struggle for space reserved for fishing between individual and collective fishermen, the use of non-selective gears such as the Aly net. Thus, it seems necessary to train and sensitize the actors on the concept of sustainable development and to apply the management rules for a rational exploitation of this fishery.
Physico-chemical properties of Ocimum americanum L. essential oil from Burkina Faso
Authors: Coulibaly Anass , Hema Delphine M. , Sawadogo Ignace , Toe Mahomed , Kiendrebeogo Martin , Nébié Roger C.H
Published: June 2023

The present study aims to determine physico-chemical and organoleptic properties of Ocimum americanum L. Essential oil (EO) extracted in Burkina Faso. The protocol described in ISO international standards and Gas Chromatography Mass Spectrometry (GC/MS) were used respectively to determine physico-chemical properties and chemical analysis of the EO. The physico-chemical parameters measured were the acid index, the miscibility with ethanol, the pH, the relative density, the refractive index and the rotatory power. The organoleptic properties studied on the essential oil were the odour, the colour and the appearance. The EO showed a relative density value less than 1, a low light refraction and found to be dextro-rotatory. The pH value obtained was tended towards acidity, the EO was soluble in 5 volumes of ethanol (70%) with a low content of free acids. O. americanum EO was fluid, colourless with a specific odour. The chemical analysis of the EO showed that the 1.8-cineole (51.8%) and the camphor (17.4%) were found to be the major constituents of the EO. These results could lead for the establishment of essential oil standards in Burkina Faso.
Optimization of the design and operation of faecal sludge dewatering stations
Authors: Kodom Piyabalo , Koledzi Edem Komi , Segbeaya Kwamivi N. , Krou Nitale M’balikine , Bissang Bouwèdèo Toi
Published: June 2023

Population growth and urbanization have encouraged the whole world to revamp the sanitation system safely through proper BV management value chain. The objective of this paper was to estimate the potentialities of adaptation in West Africa under a Sudano-Sahelian climate of a process for the treatment of fecal sludge by unplanted drying bed as well as the practical modalities of its implemented to achieve reliable and efficient processing with this type of device. This study was carried out in Togo more precisely in the municipality of Kozah 1. Experimentally, the study is carried out on a pilot system with an area of 0.2 m2. The determining parameters in the management of faecal sludge have been taken into account at the physical, chemical and microbiological level. The acceptable average organic load after 32 days of drying is 165 Kg DM/year/m2 with raw sludge and biosolids having respectively the physico-chemical characteristics: 960 mgO2/L, 384 mgO2/L for COD; 2814 mgN/L, 1620 mgN/L for NTK; 174.4 mg P/L, 73 mgP/L for P-PO43-. The volume relative humidity remaining after 32 days of regular monitoring is 12%. Microbiological germs such as E. coli, CF, SF, Salmonella, Clostridia and Listeria were the subject of this study. The rate of their elimination is respectively: 57%, 100%, 43%, 57%, 100%, 66%. These results show that the system put in place is effective.
Mobilization of trans-cinnamic acid, precursor of lignins in date palm roots over a compatible interaction with the pathogenic agent of bayoud disease, Fusarium oxysporum f. sp. albedinis
Authors: Boucenna-Mouzali B. , Gaceb-Terrak R. , Azouaoui-Ait Kettout T. , Touam D. , Rahmania F.
Published: June 2023

Bayoud disease of date palm Phoenix dactylifera L. is the result of specific interactions established between this plant and Fusarium oxysporum f. sp. albedinis (F.o.a.). Facing this aggression, the host plant uses its constitutive preventive system and also defense mechanisms triggered by the pathogen. Our work is based on the identification of secondary metabolites produced during this confrontation in date palm roots. Our results show that during infection, susceptible cultivar accumulates considerable proportions of para-hydroxybenzoic acid. In soils infested by F.o.a., a significant decrease of para-hydroxybenzoic acid and an accumulation of para-hydroxycinnamic acid were observed in the roots of resistant cultivar. The analysis we realized shows that preferential orientation of the precursor “trans-cinnamic acid” of phenolic metabolism is activated in the root in contact with the causative agent of Bayoud. It also shows the presence of a greatest amount of lignin in resistant cultivar roots when compared with the susceptible ones.
Application of raw peach stones for hexavalent chromium removal from aqueous solution using column system
Authors: Khemmari F. , Benrachedi K.
Published: June 2023

Raw biosorbent waste is a cheap and environmentally friendly material that provides good cost-benefit for the industries that use it. The objective of this study is to improve the feasibility of raw local peach stones (RPS) waste for the removal of hexavalent chromium from aqueous solution using column system. The characterization of the adsorbent (RPS) was done by using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The impact of various parameters such as flow rate (1.5,3 and 5 ml/min) and height bed (1,2 and 3 cm) on Cr(VI) adsorption onto RPS were investigated. Two models were proposed to illustrate column breakthrough curve obtained at different flow rates and bed heights. The obtained experimental results showed a better adsorption efficiency at a low flow rate (1.5 ml/min) and a bed height of 3cm. Thus this work provides the high potential of raw peach stones (RPS) for the removal of Cr(VI) ions from aqueous solution.
Buckling analysis of plates using an efficient sinusoidal shear deformation theory
Authors: Khalfi Y. , Sallai B. , Bellebna Y.
Published: June 2023

Mechanical buckling response of isotropic and orthotropic plates using the two variable refined plate theory is presented in this paper. The theory takes  account of transverse shear effects and parabolic distribution of the transverse shear strains through the thickness of the plate; hence it is unnecessary  to use shear correction factors. Governing equations are derived from the principle of virtual displacements. The nonlinear strain-displacement of Von  Karman relations are also taken into consideration. The closed-form solution of a simply supported rectangular plate subjected to in-plane loading has  been obtained by using the Navier method. Numerical results are presented for the present efficient sinusoidal shear deformation theory, demonstrating  its importance and accuracy in comparison to other theories.
Pig based water quality assessment in El-Hai River Basin, Elkantara Plain, Algeria
Authors: Kerboub D. , Fehdi C. , El hmaidi A. , Ousmana H. , Azzi Y. , Khemissi C.
Published: June 2023

Groundwater of the El-Kantara plain needs greater attention, because it is the alternative source of water for domestic and agricultural purposes. Water  pollution affects both water quality and human health. Hence it is essential for continuous monitoring of the quality of groundwater so that pollution can  be minimized. This study aims to evaluate the degree and extent of contamination of the Mio-Plio-Quaternary alluvial aquifer, in the El-Kantara area,  Northern Biskra region (Algeria). A pollution index of groundwater (PIG) is proposed for quantification of water contamination at eleven (11) sampling  different wells during four times at each well (dry period: September 2011/2014 and wet period February 2012/2015). PIG quantifies the status of concentrations of water quality measures with respect to their drinking water quality standards. The computed values of Pollution Index Groundwater  (PIG) of El-Kantara aquifer in El-Hai River Basin vary from 0.746 (Insignificant pollution during wet period; February 2015) to 6.287(Very high pollution  during dry period; September 2014). Spatial variation map has been prepared using GIS reveled that most of the study area accounts for very high  pollution zones (61.36% of samples).
Valorization of date seeds wastes as reinforcement for Starch-grafted-polypropylene composites
Authors: Hamma A. , Dairi B. , Bouhelal S.
Published: June 2023

Paper discusses the possibility of incorporation of date seed waste as fillers (DSF) into starch-g-PP matrices compared to kenaf fibers (KF with two  lengths) based composites. Three starch-g-PP matrices (G906PF, G906PJ and G720PJ) were studied in parallel to a fully PP one. The investigated composites loaded to 20 wt.%, showed differences in performance related, principally, to loading type (DSF, KF) and matrix used. Results showed an  improvement of tensile and impact stress at break as well as Shore D hardness of starch-g-PP composites reinforced with date seed fillers (DSF) or kenaf  fibers (KF). Further, tensile, storage and loss moduli increased also with loading. Vicat softening point of either KF or DSF/starch-g-PP composites was  greater with higher values for KF composites. However, thermal stability of starch-g-PP composites was better when DSF was used.