bluuebunny/crossref_metadata_2025 huggingface dataset:
Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe–Solar Orbiter Radial Alignment
Authors: Telloni Daniele , Sorriso-Valvo Luca , Woodham Lloyd D. , Panasenco Olga , Velli Marco , Carbone Francesco , Zank Gary P. , Bruno Roberto , Perrone Denise , Nakanotani Masaru , Shi Chen , D’Amicis Raffaella , De Marco Rossana , Jagarlamudi Vamsee K. , Steinvall Konrad , Marino Raffaele , Adhikari Laxman , Zhao Lingling , Liang Haoming , Tenerani Anna , Laker Ronan , Horbury Timothy S. , Bale Stuart D. , Pulupa Marc , Malaspina David M. , MacDowall Robert J. , Goetz Keith , de Wit Thierry Dudok , Harvey Peter R. , Kasper Justin C. , Korreck Kelly E. , Larson Davin , Case Anthony W. , Stevens Michael L. , Whittlesey Phyllis , Livi Roberto , Owen Christopher J. , Livi Stefano , Louarn Philippe , Antonucci Ester , Romoli Marco , O’Brien Helen , Evans Vincent , Angelini Virginia
Published: May 2021

The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are calculated. The Hilbert–Huang transform is additionally used to mitigate short sample and poor stationarity effects. Results show that the plasma evolves from a highly Alfvénic, less-developed turbulence state near the Sun, to fully developed and intermittent turbulence at 1 au. These observations provide strong evidence for the radial evolution of solar wind turbulence.
L’écriture comme génétique et politique du quotidien : l’exemple du cahier de bord en éducation spécialisée
Authors: Contini Jean-Christophe
Published: May 2021

Contrairement aux idées reçues qui circulent dans le sens commun, les éducateurs spécialisés utilisent de nombreux supports graphiques dans le cadre de leur pratique professionnelle. Ces écrits mineurs soutiennent la communication nécessaire au travail d’équipe dans le cadre de l’institution de la vie quotidienne et contribuent dans le même temps à la fabrication du quotidien institutionnel, favorisant de la sorte une réflexivité et une génétique de l’agir qui se caractérise par la mise en œuvre d’une authentique politique indigène, une gouvernementalité de soi et des autres produite en équipe. La singularité du micro-lien social que constitue ce quotidien justifie dès lors d’en étudier les écritures mineures et ordinaires, peu connues, difficiles d’accès et souvent délicates à lire.
L’écriture partagée avec les usagers, un projet aux enjeux pluriels
Authors: Talbot Marie-Christine , Daufresne Raphaël , Devoucoux Vincent , Jagu Catherine , Legras Bernard , Malandain Magali
Published: May 2021

Cet article s’intéresse, aux pratiques d’écriture partagée avec les usagers, au sein des établissements sociaux, médico-sociaux et de formation en travail social. Pour mener cette recherche, le groupe composé de travailleurs sociaux, de formateurs et de chercheurs a retenu l’approche collaborative. Cette expérience visait à sensibiliser et à associer les professionnels au processus de la recherche, dont nous présentons ici les principaux résultats.
L’alternant et son mémoire. Présentation d’un dispositif psychosociologique d’accompagnement à la rédaction du mémoire
Authors: Marcodoppido Fabio
Published: May 2021

L’article s’intéresse aux alternants, étudiants- salariés inscrits dans des formations de niveau master à visée professionnelle et qui exercent simultanément en entreprise dans le cadre de contrats de professionnalisation ou d’apprentissage. Alors qu’ils font l’expérience de la difficile articu­lation entre travail et apprentissage, pourquoi et comment les aider à rédiger leur mémoire de fin d’études par un dispositif d’accompagnement psychosociologique ? Les réflexions ici proposées rendent compte des problèmes auxquels ces alternants ont affaire pour rédiger un mémoire mixte, à savoir un mémoire de recherche fondé sur le travail et l’enquête conduits dans l’organisation qui les emploie.
Les Lumières : hier, aujourd'hui, demain
Authors: Tirole Jean
Published: May 2021

Peut-on baser une analyse économique de la finance sur une présomption de rationalité des acteurs des marchés financiers ? La théorie de l’efficience des marchés a été un utile point de départ, mais elle doit être repensée pour mieux rendre compte des crises financières ou des déviations des prix des actifs par rapport à leur fondamentaux. Cette contribution passe en revue trois voies amendant cette vision et ayant fait l’objet de nombreuses recherches ces dernières décennies : les bulles financières (la surévaluation des actifs par rapport à leur valeur intrinsèque), la théorie de l’agence (distinguant rationalité individuelle et rationalité collective), et l’économie comportementale
Variété des excitations dans les groupes
Authors: Chapelier Jean-Bernard
Published: May 2021

L’étude de l’excitation en fonction des âges montre un lien constant en excitation motrice et présence de remarques associatives (verbales ou imagées). Leurs rapports varient : à la latence, l’activité motrice domine et le thérapeute doit faire un effort pour ne s’intéresser qu’aux associations parallèles et intervenir à ce niveau ; à la préadolescence, le sujet est plus facile à traiter car il y a une alternance entre les deux principes (désorganisation-réorganisation) ; à l’adolescence, c’est l’aspect verbal des associations libres qui domine. Le psychothérapeute pris dans les associations groupales doit entendre ce qui est en jeu et non être pris dans le chaos de l’excitation.
Force de liaison de l’excitation, force de lien. De l’intérêt du jeu en groupe thérapeutique de jeunes enfants
Authors: Chapellière Hervé
Published: May 2021

Après une courte introduction à propos des difficultés rencontrées par les thérapeutes face aux phénomènes d’excitation dans les groupes d’enfants, il s’agira d’observer l’évolution psychique de Selim dans un groupe thérapeutique pour des jeunes patients au profil dysharmonique, groupe semi-ouvert, conduit par trois thérapeutes. Nous verrons que cet enfant, très entravé dans ses capacités de jeu, se manifeste essentiellement, dans les premiers temps du groupe, tantôt par une excitation débordante, tantôt par un effondrement massif. La capacité ludique des thérapeutes, individuellement et collectivement, puis celle de l’ensemble des pairs ont permis très progressivement, pour Selim une transformation de l’excitation à travers le jeu des représentations et des affects.
« L’institution merveilleuse » comme traitement… de l’excitation d’un groupe d’enfants
Authors: Sanahuja Maria de la Almudena , Bernard Alexandra , Franquin Aude
Published: May 2021

Notre expérience clinique au sein d’un foyer d’accueil et d’hébergement d’urgence nous a permis d’observer que le trauma des enfants accueillis laisse des traces bruyantes ou insidieuses au sein de l’habitat institutionnel. Ces enfants aux forces pulsionnelles destructrices attaquent autant le groupe des soignants que les murs de l’institution. En parallèle, le groupe de professionnels peut en venir à fonctionner en miroir de la population accueillie. Dans ce cadre, le phénomène groupal vient mettre en exergue un phénomène de co-excitation exacerbée, devenant très vite difficile à contenir. La souffrance des enfants qui devient par contamination aussi celle de l’institution, traduit un inconscient groupal en perte de contenance. Il amène le besoin urgent pour le clinicien de restaurer les contenants abîmés. La proposition de recours à un outil de médiation innovant dénommé « l’institution merveilleuse » pourrait ainsi intervenir comme une aide à la relance de la fonction thérapeutique.
Diamond Princess II
Authors: Barbuda Amine
Published: May 2021

This graphic tale takes place among a group of six passengers from the Diamond Princess — a cruise ship which formed a COVID-19 cluster in the beginning of 2020 — who meet later in the city of Yokohama, Japan. They need to discuss a collective condition: a mental communication between them, which they don’t know whether it can be attributed to the treatment they received or to the original illness. The main references for this graphic tale are the movies El ángel exterminador (1962) and Le charme discret de la bourgeoisie (1972), both written and directed by Luís Buñuel. The movies, immersed in a surrealist atmosphere created by the relationships between the characters, bring elements to the script that were observed at the Diamond Princess, such as people held up in a location by an “invisible force,” a sense of broken communication, and the spread of misleading information. These are some issues that we now have to face during the pandemic: a combined breakdown and continuous flow of (mis)communication which challenges the referential framework of the world we inhabit, outsourcing reflexive power onto international bodies (such as the WHO), social media (through biographical text and video), or the reader.
Handle with Care
Authors: Daffron Eric
Published: May 2021

This essay examines two sets of coronavirus-prevention guidelines issued by New York City’s health department in early spring 2020. The department advised residents not to touch their faces “unless” they had washed their hands but advised them to masturbate “especially if” they had washed their hands. Those recommendations reshaped New Yorkers’ relationship to their bodies and, in so doing, contributed to a new permutation of biopower. Drawing on several theories of biopower, this essay’s first section explains that the department’s recommendations used large-scale biopolitical tactics with small-scale implications to encourage New Yorkers to meet the expectations of what Nikolas Rose has called “biological citizenship.” Exploring potential responses to the body’s biopolitical regulation, this essay’s second section considers the prohibition against touching in Sigmund Freud’s outdated but culturally resonant theory of obsessional neurosis. While obsessional neurosis may transgress, cancel, or achieve a compromise with that prohibition, only a ceremonial such as handwashing offers promise for responsible action. However, it, like the obsessional’s other actions, operates in a cycle of desire and prohibition which cannot fully account for how biopower now promotes and regulates bodily knowledge and movement. In search of alternatives, this essay’s final section turns to four coronavirus-themed pornographic videos produced by gay and bisexual men. These videos troubled public-health guidelines while providing potential viewers in New York and beyond with critical and creative options for pandemic-era action. In sum, these productions revealed that creation can come out of crisis.
The Invisibility of Women’s Unpaid Work in Gender Policies
Authors: Ferrari Aylén Rodriguez
Published: May 2021

Despite significant improvements in gender equality over the last few decades, the gender pay gap persists. The unequal distribution of unpaid care work is one factor that explains the wage difference between men and women. On average, women spend disproportionally more time on unpaid care work and domestic chores than men, and they are more likely to work part-time, reduce working hours, or turn down promotions due to family responsibilities. This behavior creates a work-experience gap between men and women. Considering that years of work experience may determine wages, this article analyzes the work-experience gap as an underlying cause of the gender pay gap and advocates for family-friendly policies that promote affordable access to child care, paid family leave, and flexible, but predictable, paid work schedules
Developing a Vocational Social Rehabilitation Model to Increase the Independence of the Instrumental Activity of Daily Living (Adl) among People with Severe Mental Illness
Authors: Widiyawati Wiwik , Yusuf Ah. , Rukmini Devy Shrimarti
Published: May 2021

Background

One of the efforts made to return people with severe mental illness to the community is to prepare with sufficient skills so then they can return to a productive life. The purpose of this study was to develop a vocational social rehabilitation model to increase the independence of the instrumental activity of daily living (ADL) among people with severe mental illness.

Design and methods

The study was conducted in 2 stages. Phase 1 used an observational design with a cross sectional approach. It was conducted at the Menur Mental Hospital from March to July 2020. The population of this study were all people with severe mental illness with a psychotic degree scoring ≥30. The total sample was 100. The data was analyzed using the Partial Least Square. The second phase was carried out by compiling modules from strategic issues and conducting expert consultations.

Results

The results of phase 1 showed that the instrumental ADL independence was directly influenced by perceived behavior, memory phase, motivation phase, skills and intention. Additionally, it is indirectly influenced by socio-demography, mental illness severity, attitude towards behavior, subjective norm, perceived behavioral control, attention, retention, motor reproduction, motivation and skill. The results of the phase 2 carried out were used to compile modules based on the stages of vocational rehabilitation consisting of determining eligibility, preparatory counseling, implementing rehabilitation, evaluation and ongoing support.

Conclusion

The vocational social rehabilitation model is related to the independence of the Instrumental ADL among people with severe mental illness.
Case series of Salmonella spp. infections confirmed by culture test at the hospital clinical laboratory in L’Aquila (Italy), years 2011-2018
Authors: Torrelli Vittoriano , Cesarini Valentina , Di Giulio Elisa , Miconi Gianfranca , Gentile Francesco , Rosciano Alessia , Tomei Anna Rita , Renzetti Pamela , Scatigna Maria
Published: May 2021

In the European Union between 2008 and 2017 there was a statistically significant decrease in the confirmed cases of salmonellosis. Nevertheless, it represents the first cause of food-borne outbreaks and the secondly most frequently reported zoonosis. Considering the pathogen diffusion and clinical consequences, monitoring the incidence of Salmonella spp. infections is a priority for public health. The study is aimed at describing the temporal trend of prevalence of Salmonella spp. positive tested and serotypes characteristics of the isolates by L’Aquila hospital laboratory microbiological analysis in 2011-2018, with a focus on the epidemic phase occurred from October 2013 to May 2014. The survey is a case series report, with a retrospective design. During the period considered, 220 infected carriers were identified, in particular 160 positive samples for Salmonella enterica serogroup B, so it was the main group causing salmonellosis in the area of L’Aquila both in the epidemic period and in the non-epidemic period. Moreover, the proportion of cases in early paediatric age (from one to five years) resulted statistically higher in the epidemic period than in the non-epidemic period. About the possible causes of the outbreak, the hypothesis of an environmental contamination seems to be plausible.
Ceftaroline-related acute eosinophilic pneumonia
Authors: Min Zaw , Elrufay Rawiya , Cho Christian Y , Elapavaluru Subbarao , Bhanot Nitin
Published: May 2021

Ceftaroline fosamil is a novel 5th generation broad-spectrum oxyimino-cephalosporin with activity against Staphylococcus aureus, including methicillin-resistant S. aureus (MRSA), Streptococcus pneumoniae, Haemophilus influenzae, and Gram-negative bacteria. It has been approved by the United States Food and Drug Administration for the treatment of acute bacterial skin and skin structure infections and community-acquired bacterial pneumonia. There have been reported cases of successful treatment of MRSA bacteremia with this agent. Common adverse drug reactions from ceftaroline include skin rash, hives, neutropenia, thrombocytopenia, and anemia. Acute eosinophilic pneumonia is a rare untoward drug reaction associated with it. We report a case of fever and acute hypoxic respiratory failure with bilateral interstitial pulmonary infiltrates while on ceftaroline therapy for sternal osteomyelitis and ascending aortic graft infection secondary to MRSA. Laboratory studies revealed peripheral blood eosinophilia (>3000 cells/mm3). After exclusion of infectious, autoimmune, and other extrinsic allergic causes of pneumonia, ceftaroline-related acute eosinophilic pneumonia was suspected. Ceftaroline was discontinued and a therapeutic trial of high-dose steroid was initiated. Significant improvement of clinical symptoms and hypoxia was achieved after 24 h of steroid therapy. There was no recurrence of clinical symptoms after completing steroid course, which supported our suspicion of acute eosinophilic pneumonia from ceftaroline. Radiographic improvement of pulmonary infiltrates occurred 4 weeks later with complete resolution at 3 months from the initial event. The current case adds to this rarely reported adverse effect from this relatively newer antimicrobial agent. Increased awareness, early recognition, discontinuation of medication, and steroid therapy are key in favorable clinical outcome and recovery.
Short-term outcomes of stents in obstructive rectal cancer
Authors: Trabulsi Nora H. , Halawani Hajar M. , Alshahrani Esraa A. , Alamoudi Rawan M. , Jambi Sama K. , Akeel Nouf Y. , Farsi Ali H. , Nassif Mohammed O. , Samkari Ali A. , Saleem Abdulaziz M. , Malibary Nadim H. , Abbas Mohammad M. , Gianotti Luca , Lamazza Antonietta , Yoon Jin Young , Farsi Nada J.
Published: May 2021

Background:

With acute obstruction due to rectal or recto-sigmoid cancer, the safety and success of deploying self-expandable metal stents has been controversial. The aim of this systematic review was to synthesize the existing evidence on the outcomes and complication rates of stent placement in these patients.

Methods:

We performed a literature search of PubMed by using appropriate keywords, and manual reference screening of included articles was done. The article screening, data extraction, and quality assessment was done by four independent reviewers. A meta analyses was performed for the main outcome measures: technical and clinical success and complication rates.

Results:

We identified 962 articles in the search. After applying inclusion and exclusion criteria, we included 32 articles in the meta-analysis. The pooled technical success rate across 26 studies that reported it was 97% [95% confidence interval (CI): 95%-99%] without evidence of significant heterogeneity (I
2= 0.0%, P = 0.84), and the clinical success rate across 26 studies that reported it was 69% (95% CI: 58%-79%) with evidence of significant heterogeneity (I
2= 81.7%, P < 0.001). The pooled overall complication rate across the 32 studies was 28% (95% CI: 20%-37%) with evidence of significant heterogeneity (I
2= 79.3%, P < 0.001).

Conclusion:

The use of rectal stents in obstructing rectal or recto-sigmoid tumors seems to be technically feasible. A high rate of technical success, however, does not always translate into clinical success. A considerable complication rate is associated with this approach. Randomized controlled trials are needed to compare the outcomes of rectal stent placement with those of surgery.
SASLT practice guidelines for the management of Hepatitis B virus – An update
Authors: Abaalkhail Faisal A. , Al-Hamoudi Waleed K. , Khathlan Abdullah , Alghamdi Saad , Alghamdi Mohammed , Alqahtani Saleh A. , Sanai Faisal M.
Published: May 2021

Infection with hepatitis B virus (HBV) remains an important public health problem with a high burden worldwide. The Saudi Association for the Study of Liver diseases and Transplantation formed a working group to develop HBV practice guidelines in Saudi Arabia. The methodology used to develop these guidelines was based on reviewing the available evidence, local data, and major international practice guidelines on the management of HBV. The aim of these guidelines is to assist healthcare providers in the management of HBV in Saudi Arabia. These updated guidelines summarize the latest local studies performed on HBV epidemiology, major changes in the prevalence of this virus, and advances in disease management.
Mastoid Cavity Obliteration with Hydroxyapatite Granules
Authors: George Jitu Sam , Kakkar Vikas , Gupta Vikasdeep , Dheeraj S , Bhukar Sandeep , Swati  , Verma Manish
Published: May 2021

Background:

Modified radical mastoidectomy is the mainstay in the treatment of a case of unsafe CSOM. In order to reduce the side effects of an open matoid cavity, many methods to obliterate the cavity have been devised.

Aims & Objectives:

Cavity obliteration was done to study the efficacy of mastoid cavity obliteration

Material and Methods:

We carried out cavity obliteration with hydroxyapatite in 20 patients and compared the results with non obliteration. Results: We observed that in addition to reduction in size of cavity, there is better epithelisation and hence faster healing of the mastoid cavity. There is also a significant improvement in hearing status of the patients.

Conclusion:

Modified Radical Mastoidectomy followed by cavity obliteration with hydroxyapatite granules has numerous advantages compared to leaving the cavity as such.
The Unpredictable Pathway of Foreign Bodies in Penetrating Neck Trauma
Authors: Alquorain Sara , Alshamsi Shatha
Published: May 2021

Saudi Arabia has the world's highest number of deaths due to road traffic accidents (RTAs). Penetrating neck trauma is a peculiar sequela of RTA, which may be complicated by the implantation of foreign bodies. Foreign bodies penetrating the neck have an unpredictable course, ranging from being completely asymptomatic to being fatal. We present an interesting case of penetrating neck trauma due to RTA that was complicated by implantation of sharp foreign bodies in the neck. These bodies migrated over time to penetrate major blood vessels. In this case, the authors discuss the current management of penetrating neck trauma and highlight the complications of residual foreign bodies in the neck and their management.
Dynamics of geodesics, and Maass cusp forms
Authors: Pohl Anke , Zagier Don B.
Published: May 2021

The correspondence principle in physics between quantum mechanics and classical mechanics suggests deep relations between spectral and geometric entities of Riemannian manifolds. We survey – in a way intended to be accessible to a wide audience of mathematicians – a mathematically rigorous instance of such a relation that emerged in recent years, showing a dynamical interpretation of certain Laplace eigenfunctions of hyperbolic surfaces.
The Martin boundary of relatively hyperbolic groups with virtually abelian parabolic subgroups
Authors: Dussaule Matthieu , Gekhtman Ilya , Gerasimov Victor , Potyagailo Leonid
Published: May 2021

Given a probability measure on a finitely generated group, its Martin boundary is a way to compactify the group using the Green's function of the corresponding random walk. We give a complete topological characterization of the Martin boundary of finitely supported random walks on relatively hyperbolic groups with virtually abelian parabolic subgroups. In particular, in the case of nonuniform lattices in the real hyperbolic space

\mathbb{H}^{n}

, we show that the Martin boundary coincides with the

CAT(0)

boundary of the truncated space.
Zéro-cycles sur les surfaces de del Pezzo (Variations sur un thème de Daniel Coray)
Authors: Colliot-Thélène Jean-Louis
Published: May 2021

Soit

X

une surface projective, lisse, géométriquement rationnelle sur un corps de caractéristique zéro. On lui associe deux entiers

N(X)

et

M(X)

, fonctions simples du carré de la classe canonique. On établit les propriétés suivantes. (a) Si le pgcd des degrés des points fermés sur

X

est

1

, alors il existe des points fermés dont les degrés sont au plus égaux à

N(X)

et sont premiers entre eux dans leur ensemble. (b) Si

X

possède un point rationnel, alors tout zéro-cycle sur

X

de degré au moins égal à

M(X)

est rationnellement équivalent à un zéro-cycle effectif, et les points fermés de degré au plus égal à

M(X)

engendrent le groupe de Chow des zéro-cycles de

X

. Le résultat (a) généralise un théorème de Daniel Coray sur les surfaces cubiques (1974). Une combinaison de théorèmes de Bertini et d'utilisation de corps fertiles rend ici ses arguments plus flexibles. On établit ensuite les résultats par considération des différents types birationnels de surfaces géométriquement rationnelles: surfaces de del Pezzo et surfaces fibrées en coniques (ces dernières déjà étudiées avec D. Coray en 1979). Un dernier paragraphe discute l'existence de points fermés de degré 3 non alignés sur une surface cubique sans point rationnel. On la relie à la question de la densité des points rationnels sur une surface de del Pezzo de degré 1. ___________ Let

X

be a smooth, projective, geometrically rational surface over a field of characteristic zero. To any such surface one associates two integers

N(X)

and

M(X)

which are simple functions of the square of the canonical class. We prove: (a) If the gcd of the degrees of closed points on

X

is

1

, then there exist closed points on

X

the degrees of which are coprime to one another as a whole and are less than or equal to

N(X)

. (b) If

X

has a rational point, then any zero-cycle on

X

of degree at least equal to

M(X)

is rationally equivalent to an effective cycle. Effective zero-cycles of degree less than or equal to

M(X)

generate the Chow group of

X

. Result (a) extends a theorem on cubic surfaces obtained by Daniel Coray in his thesis (1974). Combining Bertini theorems and large fields, we introduce some flexibility in his method. The results (a) and (b) then follow from a case by case analysis of the various birational equivalence classes of geometrically rational surfaces: del Pezzo surfaces and conic bundle surfaces (the latter type had been handled with D. Coray in 1979). In a last section, for smooth cubic surfaces without a rational point, we relate the question whether there exists a degree 3 point which is not on a line to the question whether rational points are dense on a del Pezzo surface of degree 1.
A comparative study on effects of different artificial starter feeds on growth and survival of Clarias gariepinus fingerlings
Authors: Okeke P.A. , Nwigwe H.C. , Nwosu M.C. , Arazu V.N.
Published: May 2021

One thousand Clarias gariepinus fingerlings stocked at eighty fingerlings per tank were fed four types of artificial starter feeds: A (formulated starter feed, 45% crude protein (CP), B (Multi feed, 53% CP), C (Vital feed, 55% CP) and D (Aqua feed of 52% CP) and cultured for 30 days in twelve concrete tanks (1200 mm×1200 mm×1500 mm). Treatments were replicated three times, and fed at 5% body weight three times daily, under well monitored water parameters. There was no significance difference (p>0.05) in growth performance of C. gariepinus fingerlings. Multi feed recorded highest growth and percentage growth rate (PGR) in weight and length of 48.08 g (72.84%) and 16.60 cm (31.33%), followed by Aqua feed with 29.37 g (65.17%) and 14.88 cm (26.72%), Vital feed with 39.07 g (70.05%) and 15.04 cm (21.81%), formulated feed of 25.19 g (48.43%) and 11.40 cm (10.76%). Fingerlings fed Vital feed recorded highest survival count (77 survivors) and survival rate (96.25%), followed by formulated starter feed with 74 survivors (92.25%), Multi feed with 73 survivors (91.25%) and Aqua feed with 71 survivors (87.50%). Weight/length Correlation Coefficient (r) showed that Multi feed recorded highest (r) of 0.95, followed by Aqua feed (0.90), Vital feed (0.87) and formulated starter feed (87.50). C. gariepinus fingerlings need feeds of high CP at least 45% in their first 30 days of culture.Key Words: Diets, water quality, stocking density, growth parameter, Clarias gariepinus
Seed propagation of Allanblackia floribunda by mechanical pre-germination treatment in Nigeria
Authors: Ekeke BA , Nuga O.O.
Published: May 2021

Allanblackia floribunda (Guttiferae) is an economic wet evergreen rainforest tree species indigenous to Nigeria. It regenerates naturally by seed but has difficult seed dormancy which discourages artificial regeneration of the species for plantation establishment. To reduce the dormancy, collected seeds were tested for viability by floatation in water and 38% viability was obtained. Mechanical pre-germination treatments were given to the viable seeds: total removal of seed coat, sand-paper scarification and laceration. These were sown in forest topsoil and washed river sand media respectively in completely Randomized Design in the Nursery. Seeds with testa totally removed and sown in forest topsoil started germination (radical emergence) two weeks after sowing and had 50% germination while plumule emergence started 16 weeks after sowing and achieved 26% emergence. These results are better than any germination results hitherto obtained about this species. However, there is still need for further studies to improve on the plumule emergence. The species has hypogeal germination and the study may be centered on the embryo germination progress.Key Words: Artificial propagation, seed, physical method, planting media, Allanblackia floribunda
Species diversity and abundance of Oligochaeta fauna in a tropical rain forest lake in South-Southern, Nigeria
Authors: Odigie J. O. , Olomukoro J.O.
Published: May 2021

The composition, distribution and abundance of Oligochaeta in Obazuwa lake of Benin City in Edo State, South-Southern Nigeria was investigated between July 2014 and June 2015. The findings, revealed a total of 18 Oligochaeta taxa and 482 individuals comprising, 11 species of Naididae family, 1 species of Aeolosomatidae family, and 6 species of Tubificidae family. The percentage abundance of Oligochaeta in the study stations showed that Naididae had the highest abundance of 66% followed by Tubificidae and Aeolosomatidae recording 28% and 6% respectively. Naididae was predominant and widespread in the study stations. The abundance and community structure of Oligochaeta in this study showed significant variations (P<0.05). The diversity indices indicated that taxa richness (d), Shannon –Wiener (H) and Evenness (E) are highest at station 1 and lowest at station 2. Jaccard’s coefficient of similarity of species revealed significant similarity between the two stations studied (P>0.05). The impact of seasonal variations, human activities and environmental factors influencing the distribution and abundance of Oligochaeta are observed. There is a need for freshwater biologists to investigate the developments in Oligochaeta ecology in lakes and other freshwater ecosystems.Key Words: Oligochaeta, Naididae, Aeolosomatidae and Tubificidae, Obazuwa Lake
Effects of Adansonia digitata (Baobab) bark meal additive on growth performance and nutrient utlization of Clarias gariepinus fingerlings
Authors: Bayon M.S. , Ikenweiwe N.B. , Odulate D.O. , Adewumi O.O. , Alegbeleye W.O. , Babalola O.E. , Alimi A.A.
Published: May 2021

Feeding trial was carried out to determine effects of Adansonia digitata bark meal (ADBM)on growth performance and nutrient utilization of Clarias gariepinus fingerlings. Six iso-nitrogenous diets (40% crude protein) were formulated with ADBM at six levels (D1- D6)(0.00, 0.20, 0.40, 0.60, 0.80 and 1.00%). One hundred and eighty fingerlings (3.09 ± 0.21 g) were stocked at ten fingerlings per tank in 18 plastic tanks (58L). Each treatment was replicated in a completely randomized design and fish were fed to satiation for 12 weeks. Data was analyzed for analysis of variance and Duncan Multiple Range Test to separate means .A. digitata bark contained oxalate, alkaloid, tannin, flavonoid, saponin steroid, anthraquinone, terpenoid, glycoside and phenol. Growth and nutrient utilization indices showed significant differences (p<0.05) among treatments. Mean weight gain (MWG) (41.77±1.88 g), final mean weight (FMW) (44.76±1.88 g), percentage weight gain (PWG) (1398.2±38.50%), daily growth weight (DGR) (0.50±0.02 g/day), apparent net protein utilization (ANPU) 76.73±3.98% and protein efficiency ratio (PER) 2.15±0.04 were highest in fish fed D3. MWG (31.27±2.48), FMW (34.31±2.25), PWG (1035.9±161.94%) and DGR (0.37±0.03) were lowest in fish fed D5. However, ANPU (49.84±4.23) and PER (1.45±0.07) were lowest in fish fed D6. Feed conversion ratio was best in fish fed D3 (1.17±0.29) while D6(1.72±0.08) was poorest.Keywords: Utilization, growth, fingerlings, Adansonia digitata bark, Clarias gariepinus
Comparative analysis of mangrove species and seedlings in a Riverine Region of Ogoniland, Nigeria
Authors: Ekeke B.A. , Vure G
Published: May 2021

The comparative study of mangrove species and seedlings with respect to their density and relative abundance were carried out in the mangrove back swamp in Gokana Local Government Area, Rivers State, Nigeria. Four transects each with length and width of 100 m and 10 m respectively were set up with more than 1 km from each other. Each station was subdivided into four subplots of 2 5 m x 1.0 m. Data collection was based on identification, enumeration and recording. Density of species and seedlings were analysis using number of stem wood per hectare while relative abundance was expressed in percentage. Mangrove species density was highest in Plots 4 and lowest in Plot 1. Rhizophora racemosa had highest relative abundance in Plots 1 (62.07%) and 2 (4 1.08%). R. mangle had highest relative abundance (4 1.67%) in Plots 3, while in Plots 4, R. mangle, A. aureum and P. reclinata recorded 26.56% each. Mangrove seedlings were: Plot 1(1.35%), (Plot 2) 2.02%, Plot 3 (93.67%) and Plot 4 (2.96%). The bulk density of seedlings in Plots 3 was attributed to high population of matured stand which enhanced constant production of propagates. Critical attention and artificial regeneration should therefore be given to waterfronts to facilitate sustainable growth and development of species and seedlings at the water front and the entire ecosystem.Keywords: Nigerian mangroves, composition, abundance, Rhizophora racemosa, Niger Delta
Alteration in blood parameters of Clarias gariepinus sub-adults exposed to atrazine herbicide
Authors: Ada F.B. , Ayotunde E.O. , Nkanu P
Published: May 2021

Clarias gariepinus is an important commercial fish with high acceptable eating qualities for both producers and consumers. Its blood parameters were examined because of the importance of blood to the health of animals. Ten C. gariepinus sub-adults from a parent population of weight 76.26±0.92 g and standard length of 22.50±61 cm were exposed to different concentrations of Atrazine, a pre-emergence and soil active herbicide in triplicates. A range finding and definitive tests were carried out to observed biological and behavioural parameters, including erratic swimming; air gulping, ulcerations, operculation, discoloration and death. Physico-chemical parameters (dissolved oxygen concentration, pH and conductivity) and haematological parameters (haemoglobin concentration, mean cell hemoglobin, mean cell hemoglobin concentration and pack cell volume were not significantly different between treatments (p>0.05) while red blood cell, white blood cell and mean corpuscle volume were significantly different between the control and the treatments (p<0.05). Conductivity did not vary significantly with Atrazine concentration, dissolved oxygen and pH varied significantly but was within the range for fish survival. Mortalities observed might have been due to influence of the chemical, biological and haematological characteristics of the fish.Keywords: Atrazine, haematology, biological and behavioural parameters, Clarias gariepinus
Distribution and diversity of mangrove species in Gokana Local Government Area, Rivers State, Nigeria
Authors: Ekeke B.A. , Vure G , Abere S.A.
Published: May 2021

Analysis of mangrove species distribution and diversity were carried out in Gokana Local Government Area, Rivers State, Nigeria. four transects (100 m x 10 m) with a distance of about 2 km from each other were set up at the mangrove back swamp starting from the waterfront towards upland. Each was divided into four equal plots of 25 m x 10 m. Data collection was based on identification and enumeration of the species. Distribution of the species as classified by Morisita’s index showed a uniform dispersion (id <1) in all plots. Simpson’s diversity index showed that species diversity was highest in Plots 4 (0.1272), followed by Plots 3 (0.2068). Plots 1 and 2 were dominated by Rhizophora racemosa (62.07% and 41.17% respectively). Plots 3 were dominated by R. mangle (4 1.67%) while Plots 4 had 26.56% of Acrostichum aureum and 26.56% of Phoenix reclinata. The overlapping mangrove species occurrence (Laguncularia racemosa and R. mangle) at the waterfronts should not alter the phenomenon of zonation for any form of reforestation project to be carried out in the area. Species for planting a specific mangrove area should be decided by environmental condition according to mangrove zonation principle so that reforestation and sustainable rehabilitation in the deteriorated ecosystem will be successfully achieved.Keywords: Nigerian mangroves, biodiversity, distribution, assemblage, Niger Delta
Sub-Lethal Toxicity of Dichlorvos on Gills and Liver of Juvenile Heterobranchus longifilis
Authors: Obaroh I.O , Attah D.D , Zuru M.H
Published: May 2021

The study assessed the histological changes in the structure of gills and liver of juvenile Heterobranchus longifilis after exposure to varying sub-lethal concentrations of Dichlorvos. The fish, 120specimenswith mean weight of 47.33±2.31g and total length 10.67±0.58cm were selected and used for the experiment. Test fish were treated with concentrations of 0.00, 0.01, 0.015 and 0.02mg/l of Dichlorvos representing treatments T1, T2, T3 and T4 respectively. The study was carried out in a static renewal bioassay system. Fish samples were stocked in plastic bowls of 75litre capacity and the exposure period was7 days. All analyses were done using standard methods. The results showed prominent changes in the gills which included: partial epithelia lifting, hyperplasia, heavy degeneration changes, oedema, congestions and vacuolization. Changes in the liver included: congestion with sub-massive necrosis, liver parenchymal cell prominent with fatty/glycogen degeneration, hepatocytes and enlargement of portal tract. Histopathological changes on the two tissues increased with concentration of dichlorvos with severe damages observed at higher concentrations. This study showed that the use of dichlorvos as pesticides, which often find their way into the aquatic system, may have negative effects on fish. Thus, the use of organic pesticides should be encouraged.

Keywords: Histopathology, sub-lethal, Heterobranchus longifilis, dichlorvos, gills and liver
Growth Performance of Clarias gariepinus Juveniles fed Diets Supplemented with Garlic (Allium sativum) Powder
Authors: Elezuo K.O , Okeke E.G , Olarewaju V.O , Quadri B.E
Published: May 2021

The study investigated effects of graded levels of garlic (Allium sativum) powder supplemented diets on the growth performance of Clarias gariepinus juveniles. Five treatments comprising of twelve C. gariepinus juveniles of mean weight 7.52±0.00g per treatment were used in the study. Fish in each treatment was fed twice daily with experimental diets formulated with different inclusion levels of garlic powder at 0%, 1%, 2%, 3% and 4%; designated as control, T1, T2, T3 and T4 respectively. Fish were fed at 5% of their body weight and feeding trial lasted for 56 days. Analysis of the physico-chemical parameters of culture water was also carried out. Collected data were analysed and results showed that water temperature ranged from 27.0 to 28.5oC, pH ranged between 7.58 and 7.79, dissolved oxygen levels varied from 6.20 to 6.50mg/l, while ammonia content was observed to be between 2.33 and 2.73mg/l. Fish fed 3% garlic inclusion diet had the highest mean weight gain (MWG) of 40.63±30.04g, percentage weight gain (PWG) of 541.73% and specific growth rate (SGR) of 2.79±0.00%/day when compared with those on other treatments. The least PWG (345.25%) and SGR (1.95±0.00) were observed in the control and fish fed 1% garlic inclusion diets. However, MWG values were similar (p > 0.05) in T1 and T4. Fish fed diets with 2% garlic inclusion had the highest FCR (3.22±0.04) while the least value (2.29±0.03) was observed in T3. Results of the crude protein contents of treated fish carcass increased in all dietary treatments. Inference from this study indicated that incorporation of garlic meal in fish diets at 3% inclusion level improved growth performance and proximate composition of C. gariepinus juveniles.

Keywords: Catfish, functional foods, garlic, nutrient utilization, weight gain
The Probiotics, Lactobacillus Acidophilus and Saccharomyces cerevisiae in Diets of Clarias gariepinus Improve Feed Utilization and Growth
Authors: Enyidi U.D
Published: May 2021

The study evaluated effects of incorporating different proportions of probiotics, Lactobacillus acidophilus (LAC) and Saccharomyces cerevisiae (SAC) in diets of Clarias gariepinus for improved growth and feed utilization. Six isonitrogenous (34% protein) diets were compounded with varying probiotic inclusion ratios (LAC: SAC) as followed: F1 (0:25%); F2 (25:0%); F3 (15:10%); F4 (10:15%); F5 (5:20%) and F6 (12.5:12.5%). The diets were mixed, preconditioned and steam pelleted at 100oC. Fish (average weight 35.16 ± 2.32g) were stocked at 15 fish per 80-liter aquarium tank and fed the experimental diets ad libitum for 60 days. Results showed that catfish fed with F2 (25% LAC and 0% SAC) had the best feed conversion ratio of 1.72±0.04, specific growth rate, 5.00±0.24 %/day, average weight gain 19.13±0.04g, final weight 56.46±0.08g and protein efficiency ratio of 0.59±0.02. Fish fed F1 (25% SAC and 0% LAC) achieved about half the growth and nutritional parameters of those fed diet F2. Growth performance increased with increasing inclusion level of LAC. However, fish fed F6 had a better specific growth rate than other mixtures except for those in F2 group. It could be inferred that reduced inclusion of SAC seemed beneficial to catfish.

Keywords: Probiotics, lactic acid bacteria, yeast, gut microbiome, African catfish
Influence of Socio-Economic Factors on the Profitability of Fish Farming in Owerri North Local Government Area of Imo State
Authors: Ukagwu J.I , Ohaturuonye S , Dan-Uchegbu C , Nkulo U , Ohakwen J.O
Published: May 2021

The study was carried out to examine the influence of socio-economic characteristics on profitability of fish farmers in Owerri North LGA of Imo State. The study considered cost incurred and returns accrued on fish production in the area. Also, the relationship between the revenue derived from fish farming and various factors affecting fish production were determined. Standard procedures were adopted in all experimental analyses. One hundred and ten (110) fish farmers were randomly selected within the study area and used for the work, and data were collected using a well-structured questionnaire. Collected data were analysed using descriptive statistics such as percentages and inferential statistics (multiple regression at p<0.05) as well as cost and return analysis. Results showed that average annual income of a fish farmer was ₦6,269,886 while the profitability index was 1.89. Thus, indicating that, for every one-naira (₦1.00) investment made in fish farming in Owerri North LGA, ₦1.89 was returned to the farmer as net income. The study further showed that sex and years of farming experience were statistically significant and positively correlated (R2=0.8570; p<0.05) with net farm returns. On the other hand, age of the farmer, education attainment and marital status were negatively correlated and not significant. It is therefore recommended that people should engage in fish farming in the area as it is a profitable venture.

Keywords: Cost, returns, socio-economic factors, fish farming, Owerri North
Protestants, Pentecostal and African Indigenous religious perspectives on COVID 19
Authors: Nojiyeza Innocent Simphiwe , Khumalo Sinakekelwe Khanyisile , Gama Nolwazi
Published: May 2021

When it comes to dealing with the spread of the coronavirus, there is a consensus on the approaches adopted by religious leaders regardless of whether they are Protestant,
Pentecostal, or African indigenous churches. There is generally compliance with WHO
regulations and lockdown regulations stipulated by various governments across the globe, including the government of South Africa. The knowledge on COVID 19, social distancing, health and hygiene promotion and resilience are some of the matters which religious leaders are contending with. From a qualitative study conducted amongst religious leaders in Northern KwaZulu Natal, South Africa, it is clear that knowledge on COVID 19 is drawn from sources which include government and the media, and social distancing and social intimacy remains contested. Religious leaders in South Africa are to a large extent complying with COVID 19 regulations and play a pivotal role as agents of social change, whilst in other parts of the world, there is massive resistance directed at governments who are perceived to be authoritarian. There is evidence that religious leaders actively participate in structures established by government to combat the spread of COVID 19, but there is an increasing need for various levels of government in South Africa to support religious organisations in the fight against coronavirus.
FORMATION OF THE CULTURE OF COMMUNICATION OF SCHOOLCHILDREN IN EXTRACURRICULAR ACTIVITIES: THEORETICAL ASPECT
Authors:   International Science Group, Bartienieva Iryna , Nozdrova Oksana
Published: May 2021

Proceedings Article published 2020 in MULTIDISCIPLINARY RESEARCH
FORMATION OF CREATIVE POTENTIAL OF THE FUTURE TEACHER DURING THE INTERNSHIP IN CHILDREN'S SUMMER HEALTH CAMPS
Authors:   International Science Group, Bartienieva Iryna , Nozdrova Oksana,
Published: May 2021

Proceedings Article published 2021 in TOPICAL ISSUES OF MODERN SCIENCE AND EDUCATION
КРИТЕРІЇ ГОТОВНОСТІ ВЧИТЕЛЯ ДО ФОРМУВАННЯ ГУМАННИХ ВЗАЄМИН З ПІДЛІТКАМИ
Authors:   International Science Group, Бартєнєва Ірина , Ноздрова Оксана
Published: May 2021

Proceedings Article published 2020 in PERSPECTIVE DIRECTIONS FOR THE DEVELOPMENT OF SCIENCE AND PRACTICE