bluuebunny/crossref_metadata_2025 huggingface dataset:
What Is the Black Hole Spin in Cyg X-1?
Authors: Zdziarski Andrzej A. , Chand Swadesh , Banerjee Srimanta , Szanecki Michał , Janiuk Agnieszka , Lubiński Piotr , Niedźwiecki Andrzej , Dewangan Gulab , Misra Ranjeev
Published: May 2024

We perform a detailed study of the black hole spin of Cyg X-1, using accurate broadband X-ray data obtained in the soft spectral state by simultaneous NICER and NuSTAR observations, supplemented at high energies by INTEGRAL data. We use the relativistic disk model kerrbb together with different models of the Comptonization high-energy tail and the relativistically broadened reflection features. Unlike most previous studies, we tie the spin parameters of the disk and relativistic broadening models, thus combining the continuum and reflection methods of spin determination. We also consider a likely increase of the disk color correction due to a partial support of the disk by large-scale magnetic fields. We find that such models yield a spin parameter of

a

*

=

0.87

−
0.03

+
0.04

if the disk inclination is allowed to be free, with

i
=
39

°

−
1

+
1

. Assuming i = 27.°5, as determined by optical studies of the binary, worsens the fit but leads to similar values of the spin,

a

*

=

0.90

−
0.01

+
0.01

. In addition, we consider the presence of a warm Comptonization layer on top of the disk, motivated by successful modeling of soft X-ray excesses in other sources with such a model. This dramatically lowers the spin, to a
* ≲ 0.1, consistent with the spin measurements from black hole mergers. On the other hand, if the natal spin of Cyg X-1 was low but now a
* ≈ 0.9, a period of effective supercritical accretion had to take place in the past. Such accretion could be facilitated by photon advection, as proposed for ultraluminous X-ray sources.
Discovery of the First Antiglitch Event in the Rotation-powered Pulsar PSR B0540-69
Authors: Tuo Youli , Serim Muhammed Miraç , Antonelli Marco , Ducci Lorenzo , Vahdat Armin , Ge Mingyu , Santangelo Andrea , Xie Fei
Published: May 2024

Using data from the Neutron star Interior Composition ExploreR observatory, we identified a permanent spin frequency decrease of Δν = −(1.04 ± 0.07) × 10−7 Hz around MJD 60132 in the rotation-powered pulsar PSR B0540-69, which exhibits a periodic signal at a frequency of ν ∼ 19.6 Hz. This points to an antiglitch event, a sudden decrease of the pulsar’s rotational frequency without any major alteration in the pulse profile or any significant increase of the pulsed flux. Additionally, no burst activity was observed in association with the antiglitch. To date, observations of the few known antiglitches have been made in magnetars or accreting pulsars. This is the first antiglitch detected in a rotation-powered pulsar. Given its radiatively quiet nature, this antiglitch is possibly of internal origin. Therefore, we tentatively frame this event within a proposed mechanism for antiglitches where the partial “evaporation” of the superfluid component leads to an increase in the normal component’s moment of inertia and a decrease in the superfluid one.
The Leptogenys Roger, 1861 (Formicidae, Ponerinae) of Hong Kong SAR with additional records from Guangdong, China
Authors: Hamer Matthew T. , Lee Jonathan Hon Chung , Tse Cheung Yau Leo , Silva Thiago S. R. , Guénard Benoit
Published: May 2024

Leptogenys is the most diverse genus of the ant subfamily Ponerinae and is widely distributed across the world’s tropical and subtropical regions. More than 40 species are known from the Oriental realm displaying a wide range of ecologies, although their life history traits remain poorly understood, and new species are frequently discovered. Here, a faunal review of the genus from Hong Kong SAR, southern China is provided. A total of nine species are recorded, with one new species, Leptogenys grohli Hamer, Lee & Guénard, sp. nov. described. Ecological and biogeographic information, including new information on reproductive modes for two species are provided with the ergatoids of L. binghamii Forel, 1900 and L. rufidaZhou et al., 2012 described. Additional records for five of these species within the neighbouring province of Guangdong are also provided. Finally, an illustrated key to species known from Hong Kong is presented, as well as notes on each species’ distribution, ecology, and behaviour. An updated provincial distributional checklist of the Leptogenys species of Mainland China and Taiwan is also supplied.
Application of symmetry analysis and conservation laws to a fractional-order nonlinear conduction-diffusion model
Authors: Tomar A. , Kumar H. , Ali M. , Gandhi H. , Singh D. , Pathak G.
Published: May 2024

In this paper, the Lie symmetry analysis was executed for the nonlinear fractional-order conduction-diffusion Buckmaster model (BM), which involves the Riemann-Liouville (R-L) derivative of fractional-order 'β'. In the study of groundwater flow and oil reservoir engineering where fluid flow through porous materials is crucial, BM played an important role. The Lie point infinitesimal generators and Lie algebra were constructed for the equation. The Lie symmetries were acquired for the ordinary fractional-order BM. The power series solution and its convergence were also analyzed with the application of the implicit theorem. Noether's theorem was employed to ensure the consistency of a system by deriving the conservation laws of its physical model.
On the topology $ \tau^{\diamond}_R $ of primal topological spaces
Authors: ÖZKOÇ Murad , KÖSTEL Büşra
Published: May 2024

The main purpose of this paper is to introduce and study two new operators $ (\cdot)_R^{\diamond} $ and $ cl_R^{\diamond}(\cdot) $ via primal, which is a new notion. We show that the operator $ cl_R^{\diamond}(\cdot) $ is a Kuratowski closure operator, while the operator $ (\cdot)_R^{\diamond} $ is not. In addition, we prove that the topology on $ X $, shown as $ \tau_R^{\diamond}, $ obtained by means of the operator $ cl_R^{\diamond}(\cdot), $ is finer than $ \tau_{\delta}, $ where $ \tau_{\delta} $ is the family of $ \delta $-open subsets of a space $ (X, \tau). $ Moreover, we not only obtain a base for the topology $ \tau_R^{\diamond} $ but also prove many fundamental results concerning this new structure. Furthermore, we provide many counterexamples related to our results.
Henrik Tuma: Pisma
Authors: Marušič Branko
Published: May 2024

Branje korespondence goriškega odvetnika, politika, planinca in publicista dr. Henrika Tume (1858–1935) prinaša priliko za razumevanje slovenske, avstrijske in evropske družbe ob koncu 19. ter na začetku 20. stoletja. Gre za izjemen dokument, ki se vključuje v zakladnico naše nacionalne dediščine kot dragoceno pričevanje o prelomnem in burnem zgodovinskem trenutku, ko sta bila Gorica in Trst še krepko vpeta v politično, kulturno in socialno tkivo slovenskega naroda. Tudi v tem smislu so Tumova pisma dragocena, saj nam pričajo, kako zelo se je naš bivanjski prostor zožil zaradi novih meja, ki jih je prinesel propad habsburške monarhije.
Ethical Considerations of AI Implementation in the Library Era
Authors: Rajkumar N. , Viji C. , Mohanraj A. , Senthilkumar K. R. , Jagajeevan R. , Kovilpillai Judeson Antony
Published: May 2024

As the mixture of artificial intelligence (AI) continues to permeate several sectors, ethical considerations have ended up a focus in ensuring responsible and sustainable AI deployment. This virtual library explores the multifaceted moral dimensions related to AI implementation. The gathering of scholarly articles and studies papers delves into key moral problems, spanning troubles which includes bias and fairness, transparency, responsibility, privacy, and societal impact. The number one section of the virtual library addresses the undertaking of algorithmic bias and fairness, reading how biases in AI systems can perpetuate societal inequalities. Various methods to mitigating bias and selling fairness in AI algorithms are explored, providing insights into the improvement of more equitable AI programs. Transparency and duty are the focal factors of the second one segment, emphasizing the need for clean conversation of AI decision-making techniques and mechanisms for holding AI systems answerable for their movements.
3-D mantle structure of the Superior Craton
Authors: Snyder D. B. , Vaillancourt A. , Kjarsgaard B. A. , Savard G. , de Kemp E. A.
Published: May 2024

Une nouvelle analyse multi-azimutale 3D de la fonction de réception a permis d'identifier quatre discontinuités sismiques régionales plongeant de 7 à 13° dans le manteau du craton Supérieur. sismiques régionales plongeant à 7-13° dans le manteau du craton Supérieur d'Amérique du Nord ; la plupart sont La plupart de ces discontinuités ne correspondent pas aux principales structures connues de la croûte supérieure. Des structures crustales largement observées avec des plans axiaux presque verticaux verticaux orientés est-ouest indiquent que la phase la plus récente et la plus dominante de plissement et de raccourcissement horizontal s'est produite pendant la période du Kenora. de raccourcissement horizontal s'est produite pendant la déformation crustale du Kenoran (D2), en même temps que la minéralisation de l'Au et le pic du métamorphisme. minéralisation de l'or et le métamorphisme maximal à 2,72-2,66 Ga. Deux discontinuités mantelliques orientées à 065° et à 249°, avec un pendage vers le sud-est et le nord-ouest, respectivement. Ces directions sont à peu près parallèles à la marge septentrionale du craton de la marge nord du craton Supérieur et de certaines caractéristiques intra-cratoniques telles que l'axe du bassin de Quetico. Deux discontinuités ont une direction de 355° et 187°, plongeant respectivement vers l'est et l'ouest et parallèlement à la marge ouest du craton. Nos nouvelles observations ne révèlent ni discontinuités à pendage modéré, orientées est-ouest, ni couches éclogitiques cohérentes caractéristiques des zones de subduction tectoniques des plaques modernes. Les structures mantelliques proéminentes à inclinaison est et ouest se rapportent mieux à une déformation paléoprotérozoïque (Trans-Hudson), rarement observée dans la croûte. Une nouvelle analyse des xénolithes et des xénocristaux du manteau indique que le métasomatisme carbonatitique prédomine au-dessus de certaines discontinuités où se produit une conductivité fortement localisée, tandis que le métasomatisme kimberlitique prédomine en dessous des discontinuités du manteau largement conducteur. Ce fichier ouvert est accompagné de l'ensemble des données géophysiques 3D GOCAD et des modèles de surface interprétés résultant de cette étude d'intégration.
The importance of histomorphological features and ERG expression in the diagnosis of malignancy in cases with atypical small acinar proliferation
Authors: Teoman Gizem , Livaoglu Ayten , Kucuk Hatice , Murtezaoglu Afs ¸ın Rahman
Published: May 2024

Background: Atypical small acinar proliferation (ASAP) cases typically require rebiopsy, which are invasive and associated with increased risk of complications. Our aim in this study was to determine the importance of laboratory and histological findings and E-26 transformation-specific-related gene (ERG) expression in the diagnosis of malignancy. Methods: Between March 2016 and March 2022, 84 patients who were diagnosed with ASAP on biopsy or rebiopsy were included in the study. Clinical-laboratory features of age, serum prostate-specific antigen level, and histopathological features were compared and included multifocality, number of suspicious acini, nuclear enlargement, nucleolar prominence, hyperchromasia, cytoplasmic amphophilia, luminal amorphous acellular secretion, crystalloid presence, infiltrative appearance, inflammation, atrophy, α-methyl acyl-CoA racemase, p63, and/or high molecular weight cytokeratin were analyzed. In addition, ERG expression was evaluated immunohistochemically. Results: Statistically significant correlation was found between nucleolar prominence, nuclear hyperchromasia, crystalloid presence, infiltrative pattern, and prostate cancer (p < .001). In 19 of 84 cases (22.6%) ERG was positive in the nucleus. Prostate cancer was diagnosed at rebiopsy in 15 of the 19 ERG-positive cases (78.9%). A statistically significant correlation was found between ERG positivity and prostate cancer (p= .002). Conclusions: Our findings suggest that evaluation of these markers during initial transrectal ultrasound biopsies may decrease and prevent unnecessary prostate rebiopsy.
Hard Anodic Coating on Aluminum and Aluminum Alloys
Authors:   AMS B Finishes Processes and Fluids Committee
Published: May 2024

This specification establishes the requirements for a hard anodic coating on aluminum and aluminum alloys.
Impact of Korra tef adoption on farm household productivity and incomes in Central Ethiopia
Authors: Leul S.Z. , Bekele A. A. , Feleke S.T. , Hailu A.G.
Published: May 2024

Tef (Eragrostis tef) is a major staple and income sourcing crop in the horn of Africa; that has attracted tremendous investment particularly in research. It is expected that the improved seed varieties will contribute to raising farm productivity and consequently, farmers’ income. The objective of this study was to assess how the adoption of improved tef variety has influenced household productivity and incomes, with a focus on the Korra tef variety introduced by the Agricultural Growth Programme phase II, in Ethiopia. Cross-sectional data were collected from 479 randomly selected farm households, in two woredas in Central Ethiopia; one as an adopter and the other as a non-adopter. The Propensity Score Matching (PSM) approach was used to investigate the adoption of the Korra tef variety and its impacts on household production and income, over the yield obtained by the non-adopters. The PSM model’s robustness was tested using regression on variables and regression on propensity scores. The adoption of the Korra tef variety, according to the PSM approach, increased tef productivity by 598.78 kg (nearly 6 quintals) per hectare, over the yield obtained by the non-adopters. Additionally, switching to the Korra tef variety raised household income by US$ 806.73 per hectare. We conclude that the adoption of Korra tef variety increases the productivity and incomes of adopter farm households.
Can reproductive health services be used to screen for sexual and gender-based violence in post-conflict Northern Uganda? – a pilot study
Authors: Opiro Keneth , Pebolo Pebalo Francis , J Scolding Neil , Hardy Charlotte
Published: May 2024

Background: Sexual and gender-based violence (SGBV), including rape and child sexual abuse, remains a significant challengein post-conflict northern Uganda. Many victims have never sought help. Consequently, the scale of the problem is not known,and SGBV victims’ injuries, both psychological and physical, remain hidden and unresolved.
Objectives: We aimed to explore whether health workers in rural Reproductive Health Services (RHS), following specific training,could provide a valuable resource for SGBV screening and subsequent referral to targeted services.
Methods: Our project had three elements. First, RHS workers were trained to use a questionnaire to screen subjects for pastSGBV. Second, the screening questionnaire was used by RHS workers over a 3-month period, and the data collected were analysedto explore whether the screening approach was an effective one in this setting, and to record the scale and nature of theproblem. Third, victims detected were offered referral as appropriate to hospital services or to a dedicated SGBV ActionAidshelter.
Results: Of 1656 women screened, 778 (47%) had suffered SGBV: 123 rape, and 505 non-sexual violence. 1,254 (76%) had beendirectly or indirectly affected by conflict experiences; 1066 had lived in internally displaced persons camps. 145 (9%) requestedreferral to Gulu SGBV Shelter; 25 attended the shelter and received assistance, and 20 others received telephone counselling.
Conclusion: Undetected SGBV remains a significant problem in post-conflict northern Uganda. RHS workers, following specifictraining, can effectively screen for and identify otherwise unrecognised survivors of SGBV. This matters because withoutongoing detection, survivors have no opportunity for resolution, healing or help.
Keywords: SGBV; resource-poor setting; Screening.
Assessing the Suitability of Green Algae (Chlorella Sorokiana) as Biosorbent for Removal of Cu (II) and Zn (II) Ions from Synthetic Wastewater in a Batch System
Authors: Oliomogbe T. I. , Nkollo M. I. , Emegha J. O.
Published: May 2024

Heavy metal contamination in wastewater poses a significant threat to environmental and human health. This study investigated the potential of Chlorella sorokiana, a green alga, as a biosorbent for Cu (II) and Zn (II) removal from synthetic wastewater. Batch experiments were conducted at 28°C, pH 6, and a contact time of 60 minutes. Chlorella sorokiana displayed promising biosorption capacity, removing 85% and 75% of Cu (II) and Zn (II), respectively. Further optimization revealed enhanced removal efficiencies at pH 5 (88.5% Cu (II) and 82% Zn (II)) and a biosorbent dosage of 0.5 g/L (90.7% Cu (II) and 87.1% Zn (II)). These findings demonstrate the efficacy of Chlorella sorokiana as a biosorbent for heavy metal remediation. This research highlights the potential of biosorption as a sustainable and environmentally friendly approach for wastewater treatment, offering a promising solution for mitigating heavy metal pollution.
Application of System Synergy in Environmental Water Monitoring
Authors: Anunobi O. O.
Published: May 2024

One of the sampling techniques used in environmental monitoring is biomonitoring, which is the use of living organisms as monitoring equipment. The organisms in the examined habitat gather a lot of material from incredibly tiny concentrations in the environment because they are constantly exposed to physical, biological, and chemical influences. Changes in the health of the environment can be detected by examining the population level, physiological processes, and behavioral variations of these creatures. Bioindicators are species, or communities of organisms, that can be used to monitor environmental health because of their sensitivity to changes in their surroundings and the way their population’s function. They are an important tool in traditional bioassays, which are mostly observation-based, because of their capacity to respond to changes in their surroundings. However, tests based on biotechnology are used to measure and identify the degree of environmental distress. These metabolic processes collaborate and interact with biomarker-responsive devices to provide an analysis of the environment under study. The physiological and metabolic changes that occur in a bioindicator's system in response to environmental change are translated into a format that is simple to read and quantify because biomarkers and bioindicators alone cannot be fully depended upon to analyze the environment. An instance of system synergy in environmental analysis is the combination of various processes up until the point where it is read and measured.
Proximate Analysis and Nutritional Content of Moringa Oleifera Leaves Collected From Horticultural Garden in Gwagwalada, Federal Capital Territory, Abuja, Nigeria
Authors: Salihu F. , Salihu M. U. , Nyadar P. M.
Published: May 2024

Moringa is a medium-sized growing tree that can reach 30 feet in height. Malnutrition is a great concern to human health. It occurs as a result of poor intake of food nutrients. Previous research has indicated that adding Moringa oleifera to animal feed can improve growth, blood chemistry, antibacterial activity, immune enhancer, antioxidant activity, and hypo-cholesterol effect. For this reason, this paper aimed to proximately analyze and determine the nutritional content of Moringa oleifera leaves taken from a horticultural garden in Gwagawlada, Federal Capital Territory, Abuja, Nigeria, using suitable standard methods. The nutritional contents of M. oliefera leaves were evaluated and the proximate composition shows that the moisture content recorded for the M. oleifera was 13.67%, the protein content was 28.50% while the fiber content of the three treatments recorded was 3.00%, the ash content recorded was 9.33% and the carbohydrate content was noticeably greater than other nutrient contents of the M. oleifera leaves being 56.50%. However, since M. oleifera is a cheap source of nutrients, it can serve as food supplementation, fortification, and complementation (especially in infant feed). Also, Moringa oleifera leaves can be utilized as a dietary supplement to boost cattle performance and efficiency of fodder or can be substituted for traditional crops for economic sustainability, environmentally friendly, safer, and low-cost production.
Using Enrichment Factor Approach for Source Identification of Potentially Toxic Heavy Metals along Benin-Ore-Sagamu Expressway in Nigeria
Authors: Raji W. A. , Jimoda L. A. , Ajani A. O. , Popoola A. O.
Published: May 2024

The variation in heavy metal concentration in different environment is dependent on the emission source. Source identification of heavy metal plays an important role in providing solution to its contamination in the atmosphere. Hence, the objective of this paper is to engage enrichment factor (EF) approach to evaluate the source identification of potentially toxic heavy metals along the Benin-Ore-Sagamu Expressway in Nigeria in four sampling locations (A, B, C and D) that are denoted with high traffic congestion. The source identification of Cu, Zn, Mn, Ni, Pd, Cd, Cr and Pb contamination in the study area were determined using appropriate standard methods. The EF values indicated for Cu ranged from (2.3-5.9), Zn (0.48-0.86), Mn (0.29-0.49), Ni (1.27-4.03), Pd (37012.18-59922.57), Cd (1909.11-2844.81), Cr (4.56-7.76) and Pb (0.77-4.64). The results suggest crustal source enrichment for Zn and Mn while Cu, Ni, Cr and Pb were enriched moderately. However, the EF values for Pd and Cd were found to be greater than 50, indicating extremely severe enrichment. The findings of this study provide evidence of anthropogenic impact on heavy metals pollution in the study area that is attributed to the intense vehicular traffic.
Determination of Activity Concentration and Radiological Risks from Gold Mine Tailings around Ilahun-Ijesa in Obokun Local Government, Osun State, Nigeria
Authors: Bamidele L. , Edun A. O.
Published: May 2024

In this study, the activity concentrations and radiological risks associated with exposure to NORMS in soils around the gold mine tailings in Ilahun – Ijesa, Obokun Local Government, Osun State, Nigeria was evaluated. A Sodium Iodide (NaI) gamma spectroscopy was used to determine the activity concentrations of the natural radio nuclides in soil samples that were collected from the gold mine tailings.  The mean activity concentration for 238 U, 232 Th and 40K   were 14.50±2.40, 10.45±3.20 and 332.70±6.10 Bqkg-1 respectively. The average absorbed dose was calculated to be 26.4 nGy/h and the corresponding average annual effective dose was found to be 0.0031 mSv, which is less than the total annual effective dose of 1 mSv recommended by ICRP for public exposure control. Radiological hazard parameters were evaluated from activity concentrations and the average values were found to be lower than recommended safety limits.
Morphometric Characteristics of the Lower Orashi River, Niger Delta Region, Nigeria
Authors: Bisong A. E. , Oku H. B. , Willabo M. , Wodu P. D. , Wike P. N. , Okara E. S.
Published: May 2024

The study examined the spatial analysis of the morphometric characteristics of the Lower Orashi River, Niger Delta Region, Nigeria. The river course was segmented into 30 equal distances of 4.8m from each other and at each point, the morphometric parameters like width, depth, and flow velocity. The discharge was measured from these parameters. Descriptive and inferential statistics were employed for data analysis while results are presented using tables and graphs. Results showed that width of the river ranged from 77.90m to 2788.00m with the mean width of 318.83m. The depth ranged from 2.10 to 7.60m with the mean depth recording 4.14m as it was higher at the upper section of the river while it becomes lower as it is entering the Atlantic Ocean. Furthermore, width was significantly correlated with the depth (r= -0.556, p<0.05), cross sectional area (r= 0.989, p<0.05) and discharge (r= 0.987, p<0.05).  Also, elevation was significantly correlated with cross sectional area (r= -0.506, p<0.05) and discharge (r = -0.511, p<0.05). More importantly, the cross sectional area was correlated with discharge (r=0.995, p<0.05). The study concluded that there is significant variation existing in the morphometric parameters namely width, elevation, cross sectional area and discharge among the segments along Orashi River. The study therefore recommended that the water course should be reduced of human activities to reduce the rate of soil loss or discharge and to boost the river floor with adequate morphological property.
Terminalia catappa Leaf Extract as a Capping Agent for ZnO Nanoparticle Synthesis via Sol-gel Method and its Microbial Effects on Selected Fungi and Bacterial
Authors: Jaji S. B. , Ochigbo S. S. , Abubakar A. Y. , Suleiman M. A. T. , Okafor J. O. , Olutoye A. F.
Published: May 2024

This study presents a reliable process for synthesizing ZnO nanoparticles using a green method. In this approach, we harness Terminalia catappa leaf extract as an effective chelating and capping agent to synthesize ZnO nanoparticles from zinc nitrate hexahydrate salt through a sol-gel method, employing Response Surface Methodology (RSM) and its microbial assessment. Optical properties of the ZnO nanoparticles were investigated using UV-visible spectroscopy, and determined their band-gap to range between 4.13 and 5.175 eV. To explore the outcomes, Response Surface Methodology (RSM), was employed which revealed that the Model F-value of 2.62 signifies the significance of the model for the response. Furthermore, when examining the contour plot relating the inhibition zone to temperature and plant extract dosage, we found that an increase in dosage and decrease in temperature resulted in an increase in the bandgap. This method of biosynthesizing zinc oxide nanoparticles through Terminalia catappa leaf extract offers effect against the bactieria and fungi such as; Escherichia -coli, Straphylococcus aureus, Pseudomonas aeuginosa and Trichophyton rubrum, Penicillium marnaffei, Atteneria spp respectively. Therefore, ZnO nanoparticles though this route gives an eco-friendly and more straightforward alternative to chemical and physical synthesis techniques for various environmental applications.
Use of Vetevera Grass (Chrysopogon zizanioides) in a Constructed Wetland to Remove Heavy Metals from Kege Wet Coffee Processing Plant, Dale Woreda, Sidama Regional State, Ethiopia
Authors: Yohannes S. B. , Mihret D. U. , Asamire A. G.
Published: May 2024

Conventional methods for removing heavy metals from contaminated water are prohibitively expensive and, more significantly, ineffective, especially when the concentration of heavy metals is low. This paper evaluated the use of vetevera grass in a constructed wetland to remove Ca, Cd, Co, Cu, Cr, Fe, K, Mn, Na, Pb, and Zn metals from Kege Wet Coffee Processing Plant, Dale Woreda, Sidama Regional State, Ethiopia using a two vertical flows constructed wetland of 132 square meters in size with Eleven meters in length and 12 meters wide. The 11m * 3m * 1m open space between two constructed wetlands is developed. The second wetland was built, and it serves the same purpose as the previous one but discharges water into the river. The construction of the wetland is performed by digging 20 cm wide, and 30 cm apart furrows. vetiveria grasses was planted at 20 cm intervals. Heavy metals (Ca, Cd, Co, Cu, Cr, Fe, K, Mn, Na, Pb, and Zn) were measured from soil and plant samples from the inlet to the outlet sampling sites using standard procedures from two compartments (soil, and macrophytes) of constructed wetland. Findings indicated that Ca (460.0 ppm) had the highest mean concentration of heavy metals, whereas Ni (0.50 ppm) had the lowest in the soil sample. Metal absorption by vetiver grass is the highest concentration found in plant tissues grown in the following order k > Ca > Na > Mn > Fe > Zn > Cu >Ni >Cr in shoots. The order of the heavy metal contents in the roots of vetiver grass was k > Ca > Na > Mn > Fe > Zn > Cu >Ni >Cr. The plant was found to be effective at transferring Mn and Ni from the roots to the shoots based on translocation and bioconcentration, whereas it served as a potential phytostabilizer for Ca, Cu, Cr, Fe, K, Na, and Zn since the TF values are lower than 1, which show that vetiver grass prefers to accumulate heavy metals in the roots rather than the shoot and so supports its potential for phytostabilization. From the present study, it was evident that vetiver grass is an ideal candidate for wastewater treatment using constructed wetland technology.
Contributory Pension Scheme and Performance of Employee of Unity Schools in South East Nigeria (2005-2019)
Authors: Igbokwe Igbokwe Chukwuma , Fredrick Eze , Maximus Eneh
Published: May 2024

This paper critically examines the implementation of the contributory pension scheme in Unity Schools in the south east of Nigeria. The  specific objectives were: to determine the extent of implementation of the contributory pension scheme; how it has helped in motivating  staff and the challenges confronting the implementation of the scheme in Unity Schools in the South East. Population of the study was  1,091 based on the nominal rolls of the five schools in Enugu and Anambra States. The Sample Size of 293 was determined using the Taro  Yamane’s statistical formula of 1964. Three hypotheses were formulated and tested using t-test statistics. Findings of the study revealed that: Contributory Pension Scheme has been fully implemented in Unity Schools; Contributory Pension Scheme has no significant effect  on the motivation of workers for efficiency in the discharge of their duties and that Federal Government inconsistency in prompt remittance of its share of the contributions and it’s borrowing from the fund for infrastructural development among others constitute  challenges to the implementation of the scheme. Based on the findings, the study recommended that: the Pension Reform Act be further amended to include the payment of gratuity; increase employers contributions from ten percent (10%) to fifteen percent (l5%), and the  removal of the 16years limit on pension. The Contributory Pension Scheme is a welcome idea which when properly implemented will  eradicate the pensioners’ harsh lives thereby making their dream a reality.
Modelling of electromagnetic wave propagation at free space-human skin interface
Authors: Biowei G. , Adekola S.A. , Benjamin A.K. , Amusa K.A.
Published: May 2024

The proliferation of the ambient environment with many wireless communication infrastructures has constituted a source of concern, at  least from health point of view. Hence, there is a need for the investigation of electromagnetic wave interaction with human tissue. This  paper models electromagnetic wave propagation at the free-space-human tissue interface, in an attempt to understand how  electromagnetic waves interact with the human skin. Maxwell’s equations were used to derive the governing equations of propagating electromagnetic waves in free space while the solution of the boundary-value problem arising from the incident electromagnetic wave at  the free space-human tissue interface was found through the use of appropriate boundary conditions. The solution led to the emergence  of four Fresnel equations, a pair each for perpendicular and parallel polarizations of the incident wave, at the boundary. Through the use of the Fresnel equations obtained, components of the incident electromagnetic wave power at the boundary can be  quantified. Typical profiles of the normalized reflected and absorbed powers at the free space-human skin interface at 28, 60, and 73 GHz  were computed, using measured values of permittivity of human tissue. It is found that the total absorption of the power of the incident  wave by the human skin occurs when the angle of incidence is between 690 and 770 for the three frequencies used. This is irrespective of  the polarization of the incident wave. Information on such distinct angles of incidence for total absorption of power does not appear to  exist in the literature as they represent new, previously unreported facts in the existing body of research. Furthermore, computed profiles  of reflected power versus incidence angle displayed here, for perpendicular polarization, demonstrate strong alignments with  established literature, thus reinforcing the credibility of the results presented in this paper.
Energy sources for poultry egg incubators’ efficiency and hatchability
Authors: Okonkwo W.I. , Ojike O. , Ezenne G. , Nwoke O.A. , Ohagwu C.J.
Published: May 2024

Artificial incubation is needed to multiply the chicken yield especially in the upcoming economies where the provision falls short of its  demand. Heat is the major factor among the indispensable requirements of successful egg incubation. Hence, the main focus of this  work is to identify the sources of energy used in poultry egg incubations and to determine the hatchability rate of the poultry egg  incubators based on energy source used. The method of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)  was used. Series of eligibility/exclusion criteria were applied: only journal articles, peer reviewed conference papers and government  publications were selected; articles in English publications were chosen as well. Only papers published from April, 2022 downwards were  covered. The study found that sources of energy for egg incubation are categorized into grid supply electricity, solar system, fossil fuel,  biogas and thermochemical materials. From the reviewed articles, 50% identified grid-supplied electricity as energy source for poultry  egg incubation and hatchability ranges from 80.9% - 98.39%. However, due to erratic nature of electricity supply and non-availability in  rural areas especially in developing nations, the study recommends increased research interest on other energy sources to improve their  hatchability.
Anti-dyslipidemic and cardio-protective effects of dietary Vernonia amygdalina leaves in monosodium glutamate intoxicated high fat diet fed Wistar rats
Authors: Ubah E.E. , Ijeh I.I , Oguamanam, K. C. , Obike C. A. , Egbuonu A.C,
Published: May 2024

The study evaluated the proximate analysis, anti- dyslipidemic and cardioprotective effects of dietary incorporated Vernonia amygdalina (VA) leaves in Monosodium glutamate (MSG) intoxicated High fat diet (HFD) fed Wistar rats. The proximate analysis of the leaves revealed the highest ash and carbohydrate content in the control (basal) diet, highest protein, crude fibre and moisture content in the 10% VA incorporated HFD and the highest crude fat in the HFD only group. Dietary incorporation of VA in HFD reversed the trend of hypercholesterolemia and hypertriglyceridemia observed in experimental animals after chronic MSG, HFD and MSG + HFD administration. At the end of week 8, HFD only group produced a higher level of total cholesterol and triglyceride when compared to the basal control diet group and the MSG only group while the 10% VA HFD group produced the greatest reduction in total cholesterol and triglyceride from week 9 – week 12. Possible mechanisms include the presence of crude fibers which binds to bile acids reducing the absorption of cholesterol. Histopathology studies of the myocardial tissues at the end of the study revealed in the MSG + HFD group signs of a marked diffused edema of the myocardium which was absent in the MSG only and HFD only groups while 5% and 10% VA incorporated HFD and the standard drug Orlistat 10 mg/kg failed to reverse the observed toxicity. Conclusion: Dietary VA reversed lipid derangement observed but failed to reverse myocardial histopathologies after chronic MSG + HFD administration and could be used as an adjunct for the treatment of obesity.
Effects of Aqueous Extract of Moringa olifera Leaves on Arsenic Trioxide Induced HepatoToxicity in Adult WistarRats
Authors: Innih Silvanus Olu , Calmday-Ombo Deborah
Published: May 2024

No Abstract
Antibiotic Resistance Indices of Methicillin-Resistant Staphylococcus aureus isolates at a Tertiary Healthcare Facility in Calabar, Nigeria
Authors: Umoh Nse O. , Udonkang Mfoniso , Akpan Samuel , Bebia Glory , Usanga Victor , Igwebuike Ngozi
Published: May 2024

No Abstract
Malaria Infection Among Psychiatric Patients Attending Federal Neuropsychiatric Hospital, Edo State
Authors: Omoruyi Z. , Oni O.L.
Published: May 2024

No Abstract
Biological activity and mechanism of action of Gotu kola oil in skin wound repair
Authors: Xu Biao , Duan Yushun , Yu Deshun , Jia Panpan
Published: May 2024

Purpose: To investigate the biological activity and mechanism of action of Gotu Kola oil in skin wound repair.
Methods: In this study, a total of 40 Sprague-Dawley (SD) rats were meticulously chosen to establish a skin wound model. The rats were randomly allocated to a study group, which received topical application of Gotu kola oil, and control group, which served as the model control. Each group consisted of 20 rats to ensure an adequate sample size. The wound area was measured using precise digital imaging software to quantitatively determine the rate of wound healing. Expression levels of hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF) and transforming growth factor-beta 1 (TGF-β1) were determined by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) while the extent of microvassel regeneration at the wound site was determined by immunohistochemical method using CD34 as a marker.
Results: The wound healing rate in the study group was higher than in the control group. In the study group, the transcription levels of HGF and VEGF were higher than in the control group on days 3, 7, and 14, while the transcription level of TGF-β1 was higher on days 7 and 14. Microvessel density (MVD) in the study group was higher than in the control group on days 3 and 7 (p < 0.05).
Conclusion: Gotu kola oil facilitates wound healing by promoting the generation of capillaries at the wound site. Harnessing this potential of Gotu kola oil may lead to the development of more efficacious treatment strategies for skin wound repair, ultimately enhancing the quality of life of the patients.
Instagram jako kanał dystrybucji treści kobiecych magazynów wielotematycznych
Authors: Sałek Weronika
Published: May 2024

The article addresses the issue of adapting printed women’s press to new conditions of consumption via social media. The subject of the study was women’s multi-subject periodicals and official Instagram profiles related to them. The aim of the study was to determine: whether in view of the above-mentioned magazines, a multi-platform strategy was used, based on the simultaneous operation of a print magazine and an Instagram profile and, based on the content, what role the account plays in the multi-platform distribution of content. For this purpose, the media content analysis method was used. All posts published on the profiles of 10 multi-subject women’s magazines between January 1 and March 31, 2022 were analyzed. Based on the results of the analysis, the author comes to the conclusion that the introduction of a new social distribution channel is not a priority for all discussed sub-segments of women’s press. It was established that the main purpose of the “Świat Kobiety”, “Pani” and “Twój Styl” profiles is to promote other brand channels (the printed issue and the magazine’s website), while the content of the “Glamour”, “Elle”, “Zwierciadło”, “Women’s Health”, “Claudia” and “Olivia” profiles is to contribute to the growth of the account and compete with other Instagram profiles. The article fills the gap related to research on women’s press in the era of platformization of print media. It may be of cognitive value to press experts and new media researchers dealing with the issue of multi-platform strategies.
An account of the second edition of the Frognet conference
Authors: Boissonneau Thomas , Maisonobe Marion
Published: May 2024

This account reviews the presentations made at the second Frognet conference, a French-speaking conference on graphs and social net- works. The conference was held in Montpellier on 6 and 7 April 2023. We detail the main themes addressed, the major sociometric surveys used, and the diversity of methodological approaches, sources and issues represented at the conference.

Ce compte rendu revient sur les présentations de la deuxième conférence Frognet : conférence francophone sur les graphes et les réseaux sociaux. Cette édition s’est tenue à Montpellier les 6 et 7 avril 2023. Le compte-rendu détaille les grandes thématiques abor- dées, les grandes enquêtes sociométriques mobilisées, la diversité des approches méthodologiques, des sources et des questionnements représentés dans la conférence.
Revista Científica WARMI intervención en violencia contra las mujeres Vol. 1 Núm. 1 (2021)
Authors: Universidad Católica de Trujillo
Published: May 2024

La revista, Revista Científica WARMI intervención en violencia contra las mujeres, tiene como objetivos mostrar productos académicos que engloben temas relacionados a la violencia que sufren las mujeres en la sociedad, cómo abordarlos, mecanismos de protección de los derechos humanos de las mujeres, políticas públicas y sociales, programas de intervención y teorías.
Dichos temas se pueden abordar desde las áreas de las ciencias humanas y sociales, vinculada a las distintas disciplinas; como: Educación, Psicología, Sociología, Antropología, Derecho, Economía, Administración, Historia, Filosofía y Religión.
UNA MIRADA A LA REALIDAD DE LA MUJER ANDINA EN LA PRELATURA DE CARAVELÍ
Authors: Álvarez Ángela del Pilar Alva
Published: May 2024

En el presente estudio se utilizó una metodología descriptiva para poder conocer la realidad de una muestra de 95 docentes de las zonas de la Provincia de Caravelí (Arequipa); Lucanas, Parinacochas y Paucar del Sara Sara (Ayacucho). Los resultados obtenidos fueron significativos, las mujeres tienen muy arraigadas sus costumbres, la mayoría empieza su vida sexual a los 18 años, pero, hay un número significativo que empieza a los 14 años, no tienen una estabilidad de pareja y educan a sus hijos solas, la propiedad de terrenos, casas y dinero están en las manos de los hombres, porque así son sus costumbres, el hombre debe ser el dueño, ellas solo las que están ahí, para servir. En el aspecto educación, la mayoría no siguen estudios superiores, se dedican a la casa a criar a los hijos, la chacra y servir al esposo. Reciben un diario entre cinco y veinte soles, aunque ellas trabajan su sueldo debe ser compartido en el hogar; la violencia hacia ellas va de la mano con la pobreza y está unida al alcoholismo, las mujeres ante esta situación prefieren callar porque el problema es privado, la vergüenza es una palabra que está muy interiorizadas en ellas. Por estas situaciones vividas su liderazgo en la comunidad es mínimo, pero, poco a poco se están haciendo escuchar y la iglesia en representación de la Prelatura de Caravelí está tomando medidas para trabajar en favor de la reivindicación, igualdad de oportunidades y la dignidad entre hombres y mujeres.
Central Auditory Processing Disorder Screening Inventory LIFE-R: Turkish Adaptation, Validity and Reliability Study
Authors: Göv AKTAN Kübra , ŞAHLI Ayşe Sanem , BELGİN Erol
Published: May 2024

Amaç: Bu çalışmanın amacı, orijinal adı LIFE-R (Listening Inventory
For Education-Revised) olan envanterin Türkçe çeviri,
adaptasyon ve geçerlilik-güvenirlik çalışmasını yaparak, ülkemize
(Santral) İşitsel İşlemleme Bozukluğu’nun taramasında kullanılabilecek
bir değerlendirme materyalini kazandırmaktır.
Gereç ve Yöntem: Çalışmaya 9-18 yaşları arasında, bilinen/tanısı
konmuş işitme, konuşma ya da öğrenme bozukluğu olmayan
115 ilköğretim ve lise öğrencisi ve öğretmenleri dahil edilmiştir.
Envanterin dil geçerliliği çalışması yapılmış, gerekli düzenlemeler
yapıldıktan sonra dilsel eşdeğerliliğe sahip olduğu saptanarak güvenirlik
ve geçerlilik analizleri tamamlanmıştır.
Bulgular: Envanterin güvenilirliğinin belirlenmesi amacıyla
ölçek ve alt boyutları için Cronbach-alfa iç tutarlılık katsayıları
hesaplanmıştır. Bu değerlerin yüksek çıkması, ölçeğin güvenilir
bir ölçme aracı olduğunu göstermiştir. Yapı geçerliliğine ilişkin
kanıtların elde edilmesi sonucunda özgün formun beş faktörlü
yapısına uygun olduğu ve faktör analizi sonucunda yüksek yük
değerlerine sahip olunduğu görülmüştür. Ölçeklerdeki maddelerin
anlamlarındaki tutarlılığa bakıldığında orijinal ve Türkçe
formundan elde edilen maddelerin toplam puanları arasında
(p<0.01) pozitif yönde anlamlı bir ilişki bulunmuştur ve ölçeğin
orijinal kültürdeki anlamları ile eşdeğerlik sağlanmıştır.
Sonuçlar: Türkçe LIFE-R (TLIFE-R), özellikle okul çağındaki
çocukların SİİB taramasında geçerli ve güvenilir bir ölçek olarak
kullanılabilir. SİİB tarama programları, risk altındaki çocukların
erken tespiti ve gerekli önleyici ve eğitici/rehabilite edici yaklaşımların
başlatılması açısından son derece önemlidir.
Ulusal Yenidoğan İşitme Taramalarında, İşitme Kaybı Risk faktörleri ve T-ABR Test Sonuçları
Authors: KEPEKÇİ Ahmet Hamdi , KARATAŞ Betül
Published: May 2024

Amaç: Erken işitme kaybı tespiti ve müdahalesinin amacı, işitme
güçlüğü çeken çocuklar için akranlarından geri kalmayacak
şekilde dil gelişimini tamamlayabilmesi ve akademik başarısının
olumsuz yönde etkilenmesini önlemektir. Bu nedenle son yıllarda
uygulanan Tarama İşitsel Beyinsapı Cevapları (T-ABR) testi,
yenidoğan işitme taramaları için altın standart olarak kabul edilir.
Bu çalışmanın amacı, yeni doğan bebeklerin işitme taramalarında
tarama ABR testinde kalan bebeklerin risk faktörleri ile ilişkisini
ortaya koymaktır.
Gereç ve Yöntemler: Hastanemizde Haziran 2019 – Ocak 2022
tarihleri arasında 3366 yenidoğan bebeğe T-ABR testi yapılmıştır.
Bu çalışmada risk grubunda olan ve olmayan yenidoğanlarda
işitme tarama testi olarak T-ABR kullanılmıştır. Bebeklerin tarama
testlerinin sonuçları ‘’kaldı’’ ve ‘’geçti’’ olarak değerlendirilmiştir.
Testten kalan bebeklerin tarama testleri, ‘’Yenidoğan Tarama
ABR Protokolü Akış Şeması’’ ve ‘’5 Günden Fazla Yoğun Bakımda
Kalan Bebeklerde Tarama ABR Protokolü Akış Şemasına’’ uygun
olarak tamamlanmıştır.
Bulgular: Toplam 3366 bebek çalışmaya katılmıştır. 306 bebek
üçüncü basamak sağlık kuruluşuna sevk edilmiştir. Bu bebeklerden
294 tanesi bebekte olan bir risk faktörü nedeniyle sevk
edilirken, 12 (dış merkezden gelen bebekler dahil edilmemiştir)
bebek testten ‘’kaldı’’ yanıtı aldığı için üçüncü basamak sağlık
kuruluşuna yönlendirilmiştir. Bebeklerin %0,4’ü (n=12) T-ABR
testinden ‘’kaldı’’ olarak sonuç almıştır. Bu bebeklerin 4’ü kız, 8’i
erkektir. T-ABR testinden kalan bebekler, üçüncü basamak sağlık
kuruluşuna/referans merkezine sevk edilmiştir. Erken doğan (<34
hafta) bebeklerin geçme oranı, zamanında doğan (>=34 hafta)
bebeklerin geçme oranına göre kıyaslandığında anlamlı fark elde
edilememiştir (p=0.234). Ailede işitme kaybı öyküsü olan bebeklerin
T-ABR testinden geçme oranı, ailede işitme kaybı öyküsü
olmayan bebeklere göre anlamlı olarak daha düşüktür (p=0.049).
Yoğun bakımda; kalma süresi 7 günden az olan bebeklerin geçme
oranı, 7 günden fazla kalan bebeklerin geçme oranına göre daha
yüksektir fakat bu fark anlamlı değildir (p=0,436) Tartışma: Bu çalışma ile Ulusal Yenidoğan İşitme Taramalarında
risk faktörü taşıyan bebeklerin T-ABR sonuçları ile ilgisi ortaya
konulmuştur.
Sonuç: Risk faktörleri ve özellikle ailede işitme kaybı varsa yeni
doğanının işitme kaybı potansiyeli konusunda farkındalığı işitme
kaybının erken teşhisi ve müdahalesinde bilinmesi önemli bir rol
oynamaktadır. Risk faktörüne sahip olan hastalar için gerektiğinde
ileri düzey odyolojik incelemelere başvurulmalıdır.