bluuebunny/crossref_metadata_2025 huggingface dataset:
Uterine Fibroids in Pregnancy
Authors: Khan Maimoona Qadir , Akhtar Zubeida , Naib Jamila M.
Published: September 2022

OBJECTIVES:
To determine the maternal and fetal outcomes associated with uterine fibroids in pregnancy.
METHODOLOGY:
This study was conducted in the Gynaecology Department of Mardan Medical Complex from January 2018 to December 2019. All pregnant women of any age or parity or gestational age with sonographic evidence of uterine fibroids were included. Demographic details, gestational age, symptoms related to fibrosis, size, number and location of the fibroid, mode of delivery, antenatal, intrapartum and postnatal complication, and neonatal outcome were entered in a predesigned proforma.
 
RESULTS:
 
The incidence of uterine fibroids in pregnancy was 0.8%.77 patients were enrolled. The mean age was 26.5 + 3.22 years. The mode of delivery was a caesarean section in 32.4%, and vaginal delivery in 53% of patients.14% of patients miscarried. Fibroids were multiple in 58.4% and single in 41.5% of patients. Submucosal fibroids were seen in 23%, intramural in 18% and subserosal in 58% of cases. The most common maternal complication was abdominal pain (25%), followed by postpartum haemorrhage(23%) and antepartum haemorrhage(19%). Neonatal outcome was good, with 57% of babies being healthy and 9% being admitted to the Neonatal Intensive Care Unit (NICU) and discharged later.
CONCLUSION:
Pregnant women with fibroids should be cautiously screened during antenatal to avoid obstetric complications.
The Sociocultural Significance of the Emedjo (Masquerade) Dance Among the Abraka People in Delta State, Nigeria.
Authors: Izu Benjamin Obeghare
Published: September 2022

Dance serves an important role in the cultural lives of a people and transcends the overall aesthetics of the body to convey the cultural essence of the dance. Among the Abraka people, the emedjo dance is an art form that reflects their cultural beliefs and thus goes beyond mere aesthetic dancing. The foremost challenges to the survival of the emedjo dance are Christianity and Western influence and if not addressed, these can adversely affect the cultural potency of the dance and in turn the intrinsic cultural elements thereof. This paper, therefore, serves as an avenue to bring to the fore the social-cultural significance of the dance, using social-cultural material to illustrate the intrinsic nature of the dance, thereby preserving the cultural context thereof. To accomplish this, the researcher used a range of data gathering methods, including interviews, participant observation, and a review of related literature. Dunham’s conceptual and ethnographic theory was employed to gain an in-depth understanding of the social-cultural significance of the emedjo dance as both an observer and a participant observer during the dance performance. The study concludes that emedjo dance is an art form that can entertain, inform, and educate the Abraka people about the uniqueness of their cultural heritage and remind them of their cultural roots. The study, therefore, recommends that, for sustainability and continuity, the emedjo dance should not be limited to the dance performance alone but should also include the dance’s many artefacts. Such factors ensure the emedjo masquerade dance culture’s continuity and originality.

Keywords: emedjo dance, masquerade, Abraka people, cultural dance, ceremonial dance.
Kepler and TESS Observations of PG 1159-035
Authors: Oliveira da Rosa Gabriela , Kepler S. O. , Córsico Alejandro H. , Costa J. E. S. , Hermes J. J. , Kawaler S. D. , Bell Keaton J. , Montgomery M. H. , Provencal J. L. , Winget D. E. , Handler G. , Dunlap Bart , Clemens J. C. , Uzundag Murat
Published: September 2022

PG 1159-035 is the prototype of the PG 1159 hot (pre-)white dwarf pulsators. This important object was observed during the Kepler satellite K2 mission for 69 days in 59 s cadence mode and by the TESS satellite for 25 days in 20 s cadence mode. We present a detailed asteroseismic analysis of those data. We identify a total of 107 frequencies representing 32 ℓ = 1 modes, 27 frequencies representing 12 ℓ = 2 modes, and eight combination frequencies. The combination frequencies and the modes with very high k values represent new detections. The multiplet structure reveals an average splitting of 4.0 ± 0.4 μHz for ℓ = 1 and 6.8 ± 0.2 μHz for ℓ = 2, indicating a rotation period of 1.4 ± 0.1 days in the region of period formation. In the Fourier transform of the light curve, we find a significant peak at 8.904 ± 0.003 μHz suggesting a surface rotation period of 1.299 ± 0.002 days. We also present evidence that the observed periods change on timescales shorter than those predicted by current evolutionary models. Our asteroseismic analysis finds an average period spacing for ℓ = 1 of 21.28 ± 0.02 s. The ℓ = 2 modes have a mean spacing of 12.97 ± 0.4 s. We performed a detailed asteroseismic fit by comparing the observed periods with those of evolutionary models. The best-fit model has T
eff = 129, 600 ± 11 100 K, M
* = 0.565 ± 0.024M
⊙, and

log
g
=

7.41

−
0.54

+
0.38

, within the uncertainties of the spectroscopic determinations. We argue for future improvements in the current models, e.g., on the overshooting in the He-burning stage, as the best-fit model does not predict excitation for all of the pulsations detected in PG 1159-035.
Evidence for an Interaction between the Galactic Center Clouds M0.10–0.08 and M0.11–0.11
Authors: Butterfield Natalie O. , Lang Cornelia C. , Ginsburg Adam , Morris Mark R. , Ott Jürgen , Ludovici Dominic A.
Published: September 2022

We present high-resolution (∼2–3″; ∼0.1 pc) radio observations of the Galactic center cloud M0.10−0.08 using the Very Large Array at K and Ka band (∼25 and 36 GHz). The M0.10−0.08 cloud is located in a complex environment near the Galactic center Radio Arc and the adjacent M0.11−0.11 molecular cloud. From our data, M0.10−0.08 appears to be a compact molecular cloud (∼3 pc) that contains multiple compact molecular cores (5+; <0.4 pc). In this study, we detect a total of 15 molecular transitions in M0.10−0.08 from the following molecules: NH3, HC3N, CH3OH, HC5N, CH3CN, and OCS. We have identified more than sixty 36 GHz CH3OH masers in M0.10−0.08 with brightness temperatures above 400 K and 31 maser candidates with temperatures between 100 and 400 K. We conduct a kinematic analysis of the gas using NH3 and detect multiple velocity components toward this region of the Galactic center. The bulk of the gas in this region has a velocity of 51.5 km s−1 (M0.10−0.08) with a lower-velocity wing at 37.6 km s−1. We also detect a relatively faint velocity component at 10.6 km s−1 that we attribute to being an extension of the M0.11−0.11 cloud. Analysis of the gas kinematics, combined with past X-ray fluorescence observations, suggests M0.10−0.08 and M0.11−0.11 are located in the same vicinity of the Galactic center and could be physically interacting.
Anticipated Geological Assessment of the (65803) Didymos–Dimorphos System, Target of the DART–LICIACube Mission
Authors: Pajola M. , Barnouin O. S. , Lucchetti A. , Hirabayashi M. , Ballouz R.-L. , Asphaug E. , Ernst C. M. , Della Corte V. , Farnham T. , Poggiali G. , Sunshine J. M. , Epifani E. Mazzotta , Murdoch N. , Ieva S. , Schwartz S. R. , Ivanovski S. , Trigo-Rodriguez J. M. , Rossi A. , Chabot N. L. , Zinzi A. , Rivkin A. , Brucato J. R. , Michel P. , Cremonese G. , Dotto E. , Amoroso M. , Bertini I. , Capannolo A. , Cheng A. , Cotugno B. , Dall’Ora M. , Daly R. T. , Di Tana V. , Deshapriya J. D. P. , Gai I. , Hasselmann P. H. A. , Impresario G. , Lavagna M. , Meneghin A. , Miglioretti F. , Modenini D. , Palumbo P. , Perna D. , Pirrotta S. , Simioni E. , Simonetti S. , Tortora P. , Zannoni M. , Zanotti G.
Published: September 2022

On 2022 September 26, the DART spacecraft will impact the surface of Dimorphos, the ∼160 m size satellite of the binary near-Earth asteroid (NEA) (65803) Didymos. What will be observed on the surfaces of both asteroids and at the DART impact site is largely unknown, beyond the details of Didymos revealed by previous Arecibo and Goldstone radar observations. We present here the expected DART and LICIACube observations of the Didymos system and discuss the planned mapping strategies. By searching similar geological features and processes identified on other NEAs, we constrain the impact conditions that DART might encounter at Dimorphos, assessing both the asteroid’s surface and interior structure.
Physical Home Sanitation as a Risk Factor for Acute Respiratory Infection in Children under 5 at Labuan Regency, Central Sulawesi
Authors: Saharudin Saharudin , Hasanuddin Hasanuddin , Hafid Fahmi
Published: September 2022

Objective: The purpose of this study was to determine the risk of physical home sanitation against acute respiratory infections in children under five in Labuan Regency, Central Sulawesi.
Method: This study was done in Labuan District, Donggala Regency, from July 31 to October 28, 2021, as an observational study with a Case Control Study technique. All children under the age of five who have ARI in the Labuan Health Center Work Area, Labuan District, Donggala Regency, are included in the study. The research was approved by the Makassar Ministry of Health Poltekkes Ethics Committee Number 1068/KEPK-PTKMKS/IX/2020 on the basis of its ethical feasibility.
Results: The physical sanitation condition of the house that does not meet the requirements for dust content is 52.9%. Home ventilation 58.6%. The lighting conditions are 47.1% and the humidity of the house is 35.7%. Bivariate analysis showed that there was a relationship between dust levels and the incidence of ARI (p=0.000), ventilation conditions with the incidence of ARI (p=0.000), lighting with the incidence of ARI (p=0.001) and humidity with the incidence of ARI (p=0.005) in children. in Labuan District, Donggala Regency. The incidence of ARI is more common in children aged 0-2 years, and the incidence of ARI has no difference between male and female sexes. Multivariate analysis showed that dust content (p=0.000 CI95% OR=9.56) and ventilation (p=0.001 CI95% OR=6.08) were the main variables that caused ARI in children in Labuan District, Donggala Regency.
Conclusion: The main variables causing ARI in children in Labuan District, Donggala Regency are dust content (OR = 9.56) and ventilation (OR = 6.08)
Students’ Perception of the Educational Environment at Hawler College of Medicine, Erbil, Iraq
Authors: Saleh Abubakir
Published: September 2022

BACKGROUND: Medical education and training vary considerably across the world. Various teaching methodologies have been adopted in medical education.

AIM: This study aimed to elicit the perception of medical students at Hawler College of Medicine about their educational environment.

METHODS: The study participants included all 152 students in their final year of study at Hawler College of Medicine, Erbil, Iraq. An anonymous questionnaire containing 27 items about the quality of their education, preparedness for residency, students’ affairs, and behaviors experienced or witnessed during medical school with a five-point Likert scale was used for data collection. The Statistical Package for the Social Sciences program was used for data analysis.

RESULTS: Of 140 students participated in the study, 73 (52.1%) said that the final year was helpful in their preparation for residency, 67 (47.8%) were satisfied with the quality of their education, and 65 (46.4%) said that basic science coursework had sufficient illustrations of clinical relevance. Overall the students mostly were dissatisfied with the relaxation spaces, study space, health services, and response to their problems. Fifty-six (40%) were frequently publicly embarrassed, 45 (32.1%) believed that they received lower evaluations or grades solely based on gender rather than performance, and 27 (19.1%) were denied opportunities for training or rewards based on gender.

CONCLUSIONS: Most of the students were satisfied with their education but unsatisfied with study space, relaxation space, and health services in the college.
Knowledge, Attitude, and Practice Regarding Needle Stick Injuries Among Health Care Workers in Baghdad Teaching Hospital and Ghazy Al-Hariri Hospital for Surgical Specialties in 2020
Authors: Al-Khalidi Ghufran Z. S. , Nasir Nadia Aziz
Published: September 2022

Background: Needle stick injuries are serious occupational hazards in the transmission of a variety of bloodborne diseases, more than twenty pathogens can be transmitted through NSI including hepatitis B virus, hepatitis C virus, and human immunodeficiency virus (AIDS) among healthcare workers. Objectives: Assess the knowledge, attitude and practice of health care workers towards needle stick injuries. Determine the prevalence of needle stick injuries among healthcare workers and its predisposing factors.  Methods: Cross-sectional descriptive study, a convenient sample of 260 health care workers was selected from Baghdad Teaching hospital and Ghazy Al Hariri hospital in Baghdad, Iraq. Data were collected by an anonymous questionnaire from January to June 2020. The collected data were analyzed by using statistical package for the social sciences (SPSS version 23). Results Prevalence of NSIs among HCWs was found to be 53.8%, which was higher in nurses (29.3%) and laboratory technicians (28.5%) followed by surgeon doctors (15.7%), assistant surgeons (13.6%) and dentists (12.9%) .The highest number of needle stick injuries occurred by recapping of needles (41.4%) followed by during drug administration (27.9%), from hand to hand  (10.7%) and during blood drawing (7.9%). A proportion of (64.5%) of  health care workers whom sustained needle stick injury had reported their Injury. Doctors scored better than others regarding mean scores of knowledge, attitude and practice. There was a highly significant association among knowledge, attitude and practice scores of the HCWs (P<0.001). A considerable percentage of the participants (80.2%) were completely immunized against HBV. Conclusions: The study showed a high prevalence of NSIs among health care workers. The score of knowledge was high, moreover acceptable responses were obtained in most attitude and practice statements, except for recapping of needles statements.
Green synthesis of metronidazole or clindamycin-loaded hexagonal zinc oxide nanoparticles from Ziziphus extracts and its antibacterial activity
Authors: Habeeb Saba Abdulmunem , Hammadi Asmaa H. , Abed Dhulfiqar , Al-Jibouri Lena Fadhil
Published: September 2022

Green chemistry has become a fruitful approach for the synthesis of semiconductors and nanoparticles with various applications. Herein, we synthesized ZnO hexagonal nanoparticles (HNPs) by green precipitation method using fresh local Ziziphus leaf extract (Rhamnaceae) with a heating range of 60–80 in an alkaline medium. It was calcinated on a furnace at 500 °C for 2 h. to get a very fine and homogeneous pale-yellow powder which is then loaded with either metronidazole or clindamycin. The physical characterizations of the particles’ morphology, size, and purity were measured using the Scanning electron microscope, UV-spectroscopy, and the Fourier transform infrared spectroscope. The size of ZnO nanoparticles (44.63 nm) was measured using scanning electron microscopy (SEM), and the mean crystal size of the precursor (17.37 nm) was measured using X-ray diffraction methods (XRD). The antibacterial activity of these particles was measured against Staphylococcus aureus bacterial strains and analyzed using a “well-diffusion technique” which revealed that metronidazole or clindamycin-containing ZnO nanoparticles showed good bactericidal activity.

Keywords
Comparative Study of Bilateral Versus Unilateral Strabismus Surgery in the Management of Lateral Incomitance in Intermittent Exotropia
Authors: Anand Kamlesh , Krishnan Ashish , Kumar Prateek , Bharadwaj Ankita , Dutta Paromita , Rastogi Anju , Hariani Avani
Published: September 2022

Purpose:

To evaluate and compare bilateral asymmetric lateral rectus recession versus unilateral resection-recession surgery in the management of lateral incomitance in intermittent exotropia.

Methods:

A prospective randomized interventional comparative study was conducted consisting of 80 patients with intermittent exotropia (older than 7 years) having significant lateral incomitance. They were equally divided into two groups by a sealed envelope system. The bilateral group underwent bilateral asymmetric lateral rectus recession and the unilateral group underwent unilateral lateral rectus recession and medial rectus resection based on post-patch deviation. Parameters assessed were change in horizontal deviation, change in lateral incomitance, binocularity, motility limitation, and complications, if any. Surgical outcome was considered successful if the primary deviation was within ±8 prism diopters (PD) and lateral incomitance was less than 5 PD.

Results:

The mean lateral incomitance preoperatively and postoperatively was 8.3 ± 1.6 and 2.8 ± 2.4 PD in the bilateral group and 8.9 ± 1.4 and 3.7 ± 2.5 PD in the unilateral group, respectively. There was no statistically significant difference in the postoperative lateral incomitance between the two groups (
P
= .25), but a statistically significant difference was observed between preoperative and postoperative lateral incomitance in each group (
P
< .0001).

Conclusions:

Both procedures are equally efficacious in achieving acceptable ocular alignment and improving significant lateral incomitance in patients with intermittent exotropia with deviations between 15 and 35 PD without causing significant motility limitation.

[
J Pediatr Ophthalmol Strabismus
. 2023;60(4):277–281.]
Impact of etiological factors on citrullination markers and susceptibility of PADI4 allele for CHIKV induced rheumatoid arthritis among South Indian Tamil RA cases
Authors: Malini Venkatraman , Shettu Narayanasamy , Murugesan Subbiah
Published: September 2022

Rheumatoid arthritis (RA) is a multifactorial disease which can be triggered by gene-environment interactions. Numerous risk factors have been acknowledged in varied ethnicities, but their generalizability is vague. Hence, proposed to identify impact of etiology on citrullination and how both interact with peptidyl arginine deiminase 4 (PADI4) polymorphism in RA onset among South Indian Tamil RA cases. Studied 207 RA cases and 186 healthy controls for C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), rheumatoid factor (RF), anti-cyclic citrullinated peptide (CCP), anti-Sa (citrullinated vimentin), anti-citrullinated α-enolase peptide-1 (CEP-1) and diseases activity score-28 (DAS-28). Past exposure to studied etiological risk factors obtained through questionnaire. Family history of RA (FHRA), surgery/injury and chikungunya virus (CHIKV) infection significantly contributed to RA (p < 0.05) particularly CHIKV (OR = 6.66, 95% CI 3.92–11.32, p = 0.001). Strikingly, 67.1% of surgery/injury and 80% of CHIKV exposed patients had RA onset within a year. RA cases with tooth decay had impact on RF, anti-CCP, anti-Sa freequeny and anti-CEP-1 level (p < 0.05).Since CHIKV infected cases showed significant anti-Sa (p = 0.04) level and frequency (p = 0.01), they were genotyped for polymorphism in PADI4_92 (rs874881), 104 (rs1748033) and 94 (rs2240340) by Sanger's sequencing which demonstrated that PADI4 confers risk (p < 0.05) for the onset of CHIKV induced RA. This is the initial report that CHIKV may contribute to RA development via vimentin citrullination. FHRA, surgery/injury, CHIKV and smoking posed a key RA risk.
Carbofuran residues in soil and consumption risks among farmers growing vegetables in Ubon Ratchathani Province, Thailand
Authors: Boonkhao Laksanee , Phonkaew Satayu , Kwonpongsagoon Suphaphat , Rattanachaikunsopon Pongsak
Published: September 2022

Farmers in Khi Lek Subdistrict, Muang District, Ubon Ratchathani Province, Thailand have been known to persistently use pesticides, especially carbofuran, in their agricultural fields. This indeed poses a risk to farmers' health and ecosystem. However, there has been no report pointing out this problem. The purpose of this study was to determine carbofuran residues in soil in four villages in Khi Lek Subdistrict, Muang District, Ubon Ratchathani Province, Thailand, where pesticides were widely used for vegetables. The quick, easy, cheap, effective, rugged and safe (QuEChERS) method was used to extract the samples, which were then analyzed utilizing high-performance liquid chromatography with a mass spectrometry detector. The health risks of carbofuran exposure through soil ingestion among 485 farmers were investigated by using the hazard quotient (HQ). The concentration of carbofuran in 10 soil samples was less than 0.01 mg/kg. The overall average of the farmers' daily dose of carbofuran in Villages 5, 8, 9 and 10 ranged from 3.9×10-9 mg/kg-day to 5×10-9 mg/kg-day, and the hazard quotient (HQ) indicated an acceptable level for health risks. However, this study found that 98.97% of the farmers ate food and 97.53% drank water while farming. As a result of this, they may still be exposed to pesticides. Since the factors contributing to human health risks include the length of exposure, frequency of exposure, and farmer body weight, this study suggests that the government should be concerned because the current pattern of pesticide use still poses an immediate health risk to the farmers. While The farmers should be trained in safe pesticide usage while safe pesticide practice should also be promoted.
Sustainable investment strategies and a theoretical approach of multi-stakeholder communities
Authors: Tanaka Hiroshige , Tanaka Chiharu
Published: September 2022

The digital industrial revolution continues to expand the global network of economies and societies. Nevertheless, difficulties of sustainability such as climate change and disruption have become more severe. Multi-stakeholders are crucially important to resolve difficulties posed to sustainability in global communities. Sustainable communities are expected to be constructed through competitive and cooperative schemes of multi-stakeholders. Sustainable global communities must reform centralized economies with top down systems and must move toward decentralized mechanisms known as bottom-up societies. Sustainable investment strategies to support environment, society and governance (ESG) presumably improve social welfare. The main findings presented herein are summarized as explained hereinafter. First, this article describes that multi-stakeholders can introduce a decentralized incentive scheme into global economies and can provide mathematical expressions of sustainable investment strategies. Secondly, the decentralized formulation described herein is used to evaluate the improvement of ESG initiatives by the decrease of social welfare losses. The formulation states mathematically relative relations among the investment strategies. Thirdly, this mathematical model explores the social welfare effects of initiatives to enhance standards, regulations, and legislations. Empirically, one finds that integration strategies have grown remarkably as a core part of social institutional reform for sustainability. Finally, initiatives to improve social evaluation by individuals who are excluded from market transaction are demonstrated to decrease social welfare losses greatly. These findings can promote initiatives to alleviate the disruption difficulties faced by communities.
Single acceptance sampling plans based on truncated lifetime tests for two-parameter Xgamma distribution with real data application
Authors: Alomani Ghadah , Al-Omari Amer I.
Published: September 2022

Recently, the two-parameter Xgamma distribution (TPXGD) is suggested as a new lifetime distribution for modeling some real data. The TPXGD is investigated in different areas and generalized to other forms by many of the researchers. The acceptance sampling plans are one of the main important statistical tools in production and engineering fields. In this paper, modified acceptance sampling plans for the TPXGD are proposed with the assumption that the lifetime is truncated at a predetermined level. The mean of the TPXGD model is utilized as a quality parameter. The variables of the acceptance sampling plans including the acceptance numbers, the minimum sample sizes, operating characteristic function and the producer's risk are investigated for various values of the model parameters. Numerical examples are offered to illustrate the process of the proposed plans. Also, a real data is fitted to the TPXGD and an application based on the suggested acceptance sampling plans is considered for explanation.
Blockchain as a Learning Management System for Laboratories 4.0
Authors: Al-Zoubi A. Y. , Dmour Mamoun , Aldmour Rakan
Published: September 2022

Remote laboratories have been developed at many universities worldwide to provide students with access to apparatus and experiments via the Internet around the clock, thus giving partner institutions the opportunity to share resources, expensive equipment and specialized laboratories, whether within a single country or at regional and international levels. Universities usually implement learning management systems (LMS) such as Moodle and Blackboard to enable students to interact, carry out learning activities and access remote labs. However, remote labs generate enormous amounts of data, which is stored, processed, analyzed, and accessed using centralized systems that lack transparency, traceability, security features, trustworthiness, and reliability. In addition, they are vulnerable to the single point of failure problem due to centralization. The application of blockchain technology in remote labs is proposed as a promising solution for future online learning as it combines a new pedagogical approach with various state-of-the-art technologies in an era that embraces Education 4.0 as the education norm. Furthermore, a novel blockchain-based framework for remote labs allows data streaming and transfer in a decentralized, transparent, traceable, reliable, secure, and trustful manner, where only authorized peers can join or access the network, thereby providing privacy of students’ data files and reports. An initial pilot of an Ethereum-based remote lab show promising result for effective management of online experiments, originally hosted in a Moodle LMS.
Viète sur l’angle de contact ou la postérité d’un isolé
Authors: Loget François
Published: September 2022

Cet article étudie le chapitre que Viète a consacré à l’angle comiculaire dans le Livre VIII des réponses variées. En marge d’un débat qui a suscité des interprétations diverses et des publications nombreuses dans la deuxième moitié du xvie siècle, Viète professe une opinion fondée sur des arguments originaux. Ce court texte a eu une influence sur certains des auteurs qui, au xviie siècle, ont apporté de nouveaux éléments de réflexion sur ce sujet.
Patrimoine scientifique : le temps des doutes ? Avant-propos
Authors: Lamy Jérôme
Published: September 2022

Le patrimoine scientifique fait l’objet, en France, depuis le début des années 1990, d’une veille patiente ainsi que d’une recension la plus exhaustive possible. Les risques de destruction de certains lieux ou de disparition de certains instruments ne sont certes pas totalement écartés ; les conditions de protection et de valorisation du patrimoine scientifique ne sont pas optimales. Toutefois, un réseau hétérogène de conservateurs, d’historiens et de scientifiques poursuit un travail de conservation qui permet une stabilisation du corpus patrimonial. Ce nouvel équilibre fournit l’occasion d’une double réflexion sur la portée des actions menées et le cadre épistémologique dans lequel elles s’effectuent. Ce numéro spécial des Cahiers François Viète se propose de redéployer les problématiques patrimoniales en s’appuyant sur les travaux les plus récents en histoire, en sociologie et en muséographie. Les différents textes réunis saisissent les différentes dimensions des pratiques mémorielles et patrimoniales sans se départir des questionnements inquiets qui les accompagnent. Ce numéro a donc pour ambition d’étudier, dans leur grande diversité, les pratiques sociales et les politiques qui organisent les rapports à la mémoire scientifique.
Uniqueness of Yudovich’s solutions to the 2D incompressible Euler equation despite the presence of sources and sinks
Authors: Noisette Florent , Sueur Franck
Published: September 2022

In 1962, Yudovich proved the existence and uniqueness of classical solutions to the 2D incompressible Euler equations in the case where the fluid occupies a bounded domain with entering and exiting flows on some parts of the boundary. The normal velocity is prescribed on the whole boundary, as well as the entering vorticity. The uniqueness part of Yudovich’s result holds for Hölder vorticity, by contrast with his 1961 result on the case of an impermeable boundary, for which the normal velocity is prescribed as zero on the boundary, and for which the assumption that the initial vorticity is bounded was shown to be sufficient to guarantee uniqueness. Whether or not uniqueness holds as well for bounded vorticities in the case of entering and exiting flows has been left open until 2014, when Weigant and Papin succeeded to tackle the case where the domain is a rectangle. In this paper we adapt Weigant and Papin’s result to the case of a smooth domain with several internal sources and sinks.
Growth of Sobolev norms for $2d$ NLS with harmonic potential
Authors: Planchon Fabrice , Tzvetkov Nikolay , Visciglia Nicola
Published: September 2022

We prove polynomial upper bounds on the growth of solutions to the

2d

cubic nonlinear Schrödinger equation where the Laplacian is confined by the harmonic potential. Due to better bilinear effects, our bounds improve on those available for the

2d

cubic nonlinear Schrödinger equation in the periodic setting: our growth rate for a Sobolev norm of order

s

is

t^{2(s-1)/3+\varepsilon}

, for

s=2k

and

k\geq 1

integer. In the appendix we provide a direct proof, based on integration by parts, of bilinear estimates associated with the harmonic oscillator.
Does SARS-COV-2, COVID-19 pandemic flirt with cardiovascular disease?
Authors: Buila Nathan Bimbi
Published: September 2022

No Abstract
Première ostéosynthèse d’une fracture de l’odontoïde aux Cliniques Universitaires de Kinshasa
Authors: Kisubi Michel Mpieme , Mukwetala Pierre Ili Apanda , Punga-Maole Zico Mwangaza , Ketani Teddy Mayinda , Kutoloka Simon Roger Mabiza , Fumu-Tamuzo Pierre , Beltchika Antoine Kalubye , Ntsambi Glennie Eba
Published: September 2022

Odontoid fractures are the most common lesions of the upper cervical spine. Immediate neurological lesions are rare but serious. They are neurosurgical lesions and their management can be difficult. The risk of pseudarthrosis and vicious callus is highest with unstable fractures. We report the case of an odontoid fracture type III, OBAV in a 22-year-old patient whose clinical aspect was marked by neck pain and mono-paresis of the right thoracic limb evaluated at 3/5 according to the motor strength scale and grade C of the ASIA Impairment Scale. The surgical treatment consisted of a trans-odontoid screwing using an anterolateral pre-sterno-cleido-mastoid approach. This was the first osteosynthesis of an odontoid fracture in our environment.

Les fractures de l’odonto de sont des lésions les plus fréquentes du rachis cervical supérieur. Les lésions neurologiques immédiates sont rares mais graves. Il s’agit des lésions neurochirurgicales dont la prise en charge peut s’avérer difficile. Le risque de pseudarthrose et de cal vicieux est maximal avec les fractures instables. Nous rapportons le cas d’une fracture de l’odonto de type III, OBAV chez une patiente de 22 ans dont la clinique était marquée par une cervicalgie, les écorchures faciales et une impotence fonctionnelle de type mono parésie du membre thoracique droit évaluée à 3/5 selon la cotation motrice et Asia C (18/25). Le traitement chirurgical a consisté en un vissage trans-odontoïdien par abord antérolatéral pre-sterno-cleido-mastoidien. Il s’agissait d’une première ostéosynthèse de l’odonto de dans notre milieu. Ce résultat clinique favorable a été obtenu en dépit de certaines limites techniques.
Survey of open educational resources among undergraduates in a state university in Nigeria
Authors: Igbinovia Magnus Osahon , Obinyan Oluwatoyin , Okumode Vincent
Published: September 2022

The purpose of this study is to find out how well Ambrose Alli University, Ekpoma, undergraduates are aware of and utilise free educational materials. Consequently, four (4) study objectives were developed to address the amount of awareness, level of use, purpose, and challenges connected with students’ use of OERs. The study adopted a descriptive survey design for a target population of 8,501 undergraduates across three faculties (Arts, Education and Physical Sciences) in the university enrolled for the 2018/2019 academic session. The study employed Yamane (1967) sample size determination and stratified random sampling technique to arrive at a sample size of 250 undergraduates which was allocated proportionally across the three faculties. A structured questionnaire was used to elicit responses which were analysed using descriptive statistics of frequency, percentage, arithmetic mean and standard deviation. The result of the analysis revealed a low level of OERs awareness among the undergraduates. Also, the study showed a low level of use of OERs among the undergraduates. Majority of those who used OERs affirmed their purpose for use to be acquiring free and quality information resources and increase their knowledge in their area of study. Findings from the analysis also revealed that lack of awareness and lack of knowledge on how to use OERs were major challenges confronting the use of OERs among the undergraduates. The study conclusively noted that embracing the full potential of OERs pushes universities to critically reconsider their policies and strategies especially in the areas of awareness and use by undergraduates who are the key beneficiary of the open access initiative
Perception of traditional medicine practitioners towards formal information sources in Delta State
Authors: Ikolo Violet Elohor
Published: September 2022

Traditional medicine practice has gained increased popularity over the years, however, documenting its knowledge and practice methods have been an uphill task mainly because of its secretive nature. There is little information on the perception of traditional medicine practitioners towards formal sources of information and the preservation of their knowledge and practice. The study sought to investigate the perceptions of traditional medicine practitioners towards formal information sources and their perceptions towards the storage of their medicinal knowledge in these formal sources in Delta State, Nigeria. Four research questions guided the study and the descriptive survey design was employed. A self-structured questionnaire was used to gather data from 82 traditional medicine practitioners in Delta State. The study found that the commonest form of traditional medicine practiced in the state is herbal. The practitioners rely mostly on oral information sources and their perception of formal sources of information is very low. In addition, the traditional medicine practitioners are not interested in having their knowledge of traditional medicine captured and stored in formal sources because they feel that their knowledge about traditional medicine is sacred and cannot be written down or recorded. Among others, the study recommended the need for an awareness campaign to be carried out by public and medical libraries in Delta State, to sensitise traditional medicine practitioners about information resources that are of relevance to them that are available in libraries.
Fee-based electronic information services and effective service delivery by federal university libraries in Nigeria
Authors: Nuhu Ahmed Khadiy , Aliyu Jafaru Shinkafi
Published: September 2022

The study investigated fee-based electronic information services offered in Nigerian federal university libraries, their effects on library services, challenges faced by libraries that implemented the services and possible solutions to address the challenges. A descriptive survey research design using stratified random sampling was used for the study. The population of the study was Nigerian federal university libraries. The population size for the study is 116. Using Krejcie and Morgan’s table, a total of ninety-two (92) professional librarians were sampled. Google form was used for data collection. Out of 92, 87 (80.04%) librarians responded to the questionnaire. The results obtained from the analysis were presented in tables using frequency and the mean by Statistical Package for the Social Sciences (SPSS, version 25). The findings of the study revealed that the only university of Lagos in federal university libraries that partially implemented two services (internet access and laptop lending). The research also revealed that in the university of Lagos, the services enable the library to generate more income, it increases library users’ patronage among others. The challenges faced by the University of Lagos while rendering the fee-based services include poor planning, the problem of pricing policy and negative perception of fee-based services by the patrons among others. The study concluded that Nigerian federal university libraries have not yet implemented fee-based electronic information services to their full course. The study recommended among others that seminars and conferences should be organized to enlighten the stakeholders of Nigerian federal university libraries on the benefits of fee-based electronic information services for effective library service delivery.
Attenuating potential of aluminum sulphate (alum) on testosterone propionate-induced benign prostatic hyperplasia in male Wistar rats
Authors: Onyegeme-Okerenta B.M. , ThankGod A. O. , Anacletus F. C.
Published: September 2022

The effect of aluminum sulphate (alum) on Testosterone propionate (TP)-induced Benign Prostatic Hyperplasia (BPH) in male Wistar rats was studied. Eighty mature male Wistar rats, with an average weight of 210g, were randomly distributed into eight groups comprising ten rats. Group 1 received only food and water, while Groups 2, and 4 to 8 were given 3 mg/kg b.w of TP subcutaneously and Group 3 received only 25 % alum solution for 28 days. Thereafter, Groups 4 to 8 were treated with 10%, 20%, 25%, 30%, and 40% alum solution respectively while group 2 remained untreated for another 28 days. The animals were fed with standard rat chow and clean water ad libitum. Sperm morphology and characteristics were observed and measured. A variety of haematological and biochemical markers were assessed. Histopathology of the testes was examined. The volume (0.10 ± 0.00 ml) viability (68.33 ± 4.41 %), activity (41.25 ± 1.25 %), and sperm count (36.67 ± 3.33 ×106) were significantly decreased (p<0.05) in group 2 when compared with the respective values obtained in group 1. Treatment with different concentrations of Alum solution significantly (p<0.05) reversed abnormal sperm features observed in group 2. Superoxide dismutase (0.90 ± 0.01 U/L) was significantly increased (p<0.05) in group 2, but the values were restored to normal after treatment with varying concentrations of Alum solutions. Photomicrographs of the testis of group 2 rats revealed a distorted testis, however, there was a significant recovery after treatment which suggested that treatment with Alum reduces TP-induced BPH.
Health hazards and risk assessment of the use of fossil fuel electricity generators in suburb of Port Harcourt, Nigeria
Authors: Emeasoba I. C. , Osu C. I. , Ordinioha B. A.
Published: September 2022

Study on the health hazards and risk assessment of the use of fossil fuel electricity generators in suburb of Port Harcourt, Nigeria was carried out. The results showed that the concentrations of the metals varied greatly among the vegetable species and locations. It was observed that the vegetables (Telfairia occidentalis and Talinum triangulare) cultivated less than 15m away from fossil fuel generator after analysis showed some level of trace metals concentration. The variation in metal concentrations in the vegetables can be attributed to the metal concentrations in soils. The concentration of the metals in the edible vegetables studied ranged from 0.90 ± 0.01 to 3.20 ± 0.001, Pb; 0.08 ± 0.001 to 0.11 ± 0.01, Cd; 53.10 ± 0.002 to 106.30 ± 0.02, Fe; and 0.40 ± 0.002 to 1.60 ± 0.02, Zn. The difference in the concentration of the metals in the various vegetable can be attributed to the different concentration of the metals in the soils and also the direction at which the vegetation was located. The CDI values of iron for adult and children were all above oral reference dose (RfD) (0.007mg/kg/day). The hazard quotient (HQ) values of the metals in all the stations were greater than 1 except Zn and Cu for children. Lead, Iron, Cadmium and Chromium exceeded 1 for both adult and children while in In all the stations, HQ values were generally high for children, thereby making people living around the area more vulnerable. The high HQ values recorded in this study were as result of high CDI values of the metals involved. These metals pose long term health risk to the land users. All the hazard index (HI) values recorded in this study were well above 1. The long-term health risk is high and the non-carcinogenic adverse effect is not negligible. Health risk assessment for all the sites considered showed that cumulative effect of some of the heavy metal studied, as indicated by the hazard index (HI), calls for concern.
Assessing the impact of variations in atmospheric water vapour content over Nigeria from GNSS measurements
Authors: Isioye Olalekan Adekunle , Combrinck Ludwig , Botai Joel Ondego , Moses Mefe
Published: September 2022

This study analyses the meteorological impact of the variability of precipitable water vapour (PWV) retrieved from ground-based global navigation satellite system (GNSS) stations over Nigeria from 2013 to 2014; these measurements represent the foremost probe of GNSS PWV distribution and variability over Nigeria. In this study, GNSS PWV daily estimates were grouped into monthly and seasonal averages; the variations in the monthly and seasonal estimates of GNSS PWV were characterized and correlated with different weather events that are regarded as good climate change indicators. The results revealed that the spatiotemporal changes in PWV content are largely subjugated by the effects of latitude, topographical features, the seasons and the continental air masses. Our study shows that there is a very strong seasonal interplay among the GNSS PWV, relative humidity, rainfall and cloud estimates. In addition, GNSS PWV and total electron content (TEC) estimates show an opposite relationship; the semi-diurnal relationship between GNSS PWV and TEC is stronger than the seasonal relationship. The seasonal relation among GNSS PWV, temperature and wind speed appears weak, while very strong interplay exists among the GNSS PWV, sun spot number and total solar radiation estimates. Our results confirm that GNSS PWV is a good pointer for weather forecasting/monitoring and fit for climate monitoring if available on a longer time scale. Finally, we recommend the densification of the GNSS network in Nigeria, as this will enable 3D profiling of PWV, thereby providing more information on GNSS PWV time series, which is needed for long-term climatology.
The South African land cover change detection derived from 2013_2014 and 2017_2018 land cover products
Authors: Ngcofe Luncedo , Hickson Rory , Singh Pradeep
Published: September 2022

The appetite for up-to-date information about the earth’s surface is ever increasing, as such information provides a basis for a large number of applications. These include the earth’s resource detection and evaluation, land cover and land use change monitoring together with other vast environmental studies such as climate change assessment. Due to the advantages of repetitive data acquisition, the synoptic view, together with the varied spatial resolution it provides, and its available historically achieved dataset, remote sensing earth observation has become the major preferred data source for various earth studies. This study assesses land cover change detection of the land cover products (2013_2014 and 2017_2018) derived from earth observation.There are vast number of change detection methodologies and techniques with some still emerging. This study embarked on post classification change detection methodology which entailed morphological and spectral filtering techniques. The 10 land cover classes that were assessed for change detection are: natural wooded land, shrubland, grassland, waterbodies, wetlands, barren lands, cultivated, built-up, planted forest together with mines and quarries. The change detection accuracy result was 74.97%. Through the likelihood analysis, the likelihood for change to occur (e.g. cultivated to grassland) and unlikelihood of change to occur (e.g. built-up to planted forest), resulted in 72.2% areas of potential realistic change.The change detection results, further depend on the quality, compatibility and accuracy of the input land cover datasets. The application of different ancillary data together with different modelling techniques for land cover classification also affect the true reflectance of land cover change detection. Therefore extra caution should be exercised when analysing change detection so as to provide true and reliable changes.
Using a domain model of social tenure to record land rights: A Case Study of Itaji-Ekiti, Ekiti State, Nigeria
Authors: Babalola Kehinde Hassan , Hulla Simon Antony
Published: September 2022

Formal land registration systems have failed to accommodate the wide range of land tenure claims found in developing countries, including land rights under customary and informal tenure systems, thereby leaving the rural people with insecure tenure. To reduce poverty, empower the poor, and ensure economic growth, security of tenure is beneficial. This paper investigates how the Social Tenure Domain Model (STDM) can be applied to record customary and informal land rights at Itaji-Ekiti, Nigeria. Primary data was collected by administering questionnaires on a house-to-house basis and conducting interviews with land rights holders. Spatial data was recorded using a handheld Global Positioning System (GPS) Garmin Oregon 300 and a mobile application (Topographic Mapper). Secondary data was collected from reports, journal articles, published books and the Google Earth image repository. The data collected through the administered questionnaires was used to analyse perceptions of tenure by the holders of land rights. This study provides additional knowledge for researchers in the field of Cadastral Surveying, as it tested the applicability of the STDM. The model will also help the government of Nigeria with the necessary data for the upgrading of informal settlements, which will provide integrity in land administration.