bluuebunny/crossref_metadata_2025 huggingface dataset:
Substructures in Protoplanetary Disks Imprinted by Compact Planetary Systems
Authors: Garrido-Deutelmoser Juan , Petrovich Cristobal , Krapp Leonardo , Kratter Kaitlin M. , Dong Ruobing
Published: June 2022

The substructures observed in protoplanetary disks may be the signposts of embedded planets carving gaps or creating vortices. The inferred masses of these planets often fall in the Jovian regime despite their low abundance compared to lower-mass planets, partly because previous works often assume that a single substructure (a gap or vortex) is caused by a single planet. In this work, we study the possible imprints of compact systems composed of Neptune-like planets (∼10–30 M
⊕) and show that long-standing vortices are a prevalent outcome when their interplanetary separation (Δa) falls below ∼8 times H
p—the average disk’s scale height at the planet’s locations. In simulations where a single planet is unable to produce long-lived vortices, two-planet systems can preserve them for at least 5000 orbits in two regimes: (i) fully shared density gaps with elongated vortices around the stable Lagrange points L
4 and L
5 for the most compact planet pairs (Δa ≲ 4.6 H
p), and (ii) partially shared gaps for more widely spaced planets (Δa ∼ 4.6–8 H
p) forming vortices in a density ring between the planets through the Rossby wave instability. The latter case can produce vortices with a wide range of aspect ratios down to ∼3 and can occur for planets captured into the 3:2 (2:1) mean-motion resonances for disks’ aspects ratios of h ≳ 0.033 (h ≳ 0.057). We suggest that their long lifetimes are sustained by the interaction of spiral density waves launched by the neighboring planets. Overall, our results show that the distinguishing imprint of compact systems with Neptune-mass planets are long-lived vortices inside the density gaps, which in turn are shallower than single-planet gaps for a fixed gap width.
In Search of Short Gamma-Ray Burst Optical Counterparts with the Zwicky Transient Facility
Authors: Ahumada Tomás , Anand Shreya , Coughlin Michael W. , Andreoni Igor , Kool Erik C. , Kumar Harsh , Reusch Simeon , Sagués-Carracedo Ana , Stein Robert , Cenko S. Bradley , Kasliwal Mansi M. , Singer Leo P. , Dunwoody Rachel , Mangan Joseph , Bhalerao Varun , Bulla Mattia , Burns Eric , Graham Matthew J. , Kaplan David L. , Perley Daniel , Almualla Mouza , Bloom Joshua S. , Cunningham Virginia , De Kishalay , Gatkine Pradip , Ho Anna Y. Q. , Karambelkar Viraj , Kong Albert K. H. , Yao Yuhan , Anupama G. C. , Barway Sudhanshu , Ghosh Shaon , Itoh Ryosuke , McBreen Sheila , Bellm Eric C. , Fremling Christoffer , Laher Russ R. , Mahabal Ashish A. , Riddle Reed L. , Rosnet Philippe , Rusholme Ben , Smith Roger , Sollerman Jesper , Bissaldi Elisabetta , Fletcher Corinne , Hamburg Rachel , Mailyan Bagrat , Malacaria Christian , Roberts Oliver
Published: June 2022

The Fermi Gamma-ray Burst Monitor (GBM) triggers on-board in response to ∼40 short gamma-ray bursts (SGRBs) per year; however, their large localization regions have made the search for optical counterparts a challenging endeavour. We have developed and executed an extensive program with the wide field of view of the Zwicky Transient Facility (ZTF) camera, mounted on the Palomar 48 inch Oschin telescope (P48), to perform target-of-opportunity (ToO) observations on 10 Fermi-GBM SGRBs during 2018 and 2020–2021. Bridging the large sky areas with small field-of-view optical telescopes in order to track the evolution of potential candidates, we look for the elusive SGRB afterglows and kilonovae (KNe) associated with these high-energy events. No counterpart has yet been found, even though more than 10 ground-based telescopes, part of the Global Relay of Observatories Watching Transients Happen (GROWTH) network, have taken part in these efforts. The candidate selection procedure and the follow-up strategy have shown that ZTF is an efficient instrument for searching for poorly localized SGRBs, retrieving a reasonable number of candidates to follow up and showing promising capabilities as the community approaches the multi-messenger era. Based on the median limiting magnitude of ZTF, our searches would have been able to retrieve a GW170817-like event up to ∼200 Mpc and SGRB afterglows to z = 0.16 or 0.4, depending on the assumed underlying energy model. Future ToOs will expand the horizon to z = 0.2 and 0.7, respectively.
New polyketides from the liquid culture of Diaporthe breyniae sp. nov. (Diaporthales, Diaporthaceae)
Authors: Matio Kemkuignou Blondelle , Schweizer Lena , Lambert Christopher , Anoumedem Elodie Gisèle M. , Kouam Simeon F. , Stadler Marc , Marin-Felix Yasmina
Published: June 2022

During the course of a study on the biodiversity of endophytes from Cameroon, a fungal strain was isolated. A multigene phylogenetic inference using five DNA loci revealed that this strain represents an undescribed species of Diaporthe, which is introduced here as D. breyniae. Investigation into the chemistry of this fungus led to the isolation of two previously undescribed secondary metabolites for which the trivial names fusaristatins G (7) and H (8) are proposed, together with eleven known compounds. The structures of all of the metabolites were established by using one-dimensional (1D) and two-dimensional (2D) Nuclear Magnetic Resonance (NMR) spectroscopic data in combination with High-Resolution ElectroSpray Ionization Mass Spectrometry (HR-ESIMS) data. The absolute configuration of phomopchalasin N (4), which was reported for the first time concurrently to the present publication, was determined by analysis of its Rotating frame Overhauser Effect SpectroscopY (ROESY) spectrum and by comparison of its Electronic Circular Dichroism (ECD) spectrum with that of related compounds. A selection of the isolated secondary metabolites were tested for antimicrobial and cytotoxic activities, and compounds 4 and 7 showed weak antifungal and antibacterial activity. On the other hand, compound 4 showed moderate cytotoxic activity against all tested cancer cell lines with IC50 values in the range of 5.8–45.9 µM. The latter was found to be less toxic than the other isolated cytochalasins (1–3) and gave hints in regards to the structure-activity relationship (SAR) of the studied cytochalasins. Fusaristatin H (8) also exhibited weak cytotoxicity against KB3.1 cell lines with an IC50 value of 30.3 µM.

﻿Graphical abstract
Supra-acetabular Pin Placement Without Fluoroscopy in Anterior Pelvic External Fixation Application
Authors: Hoehmann Christopher L. , DiVella Michael , Osborn Nathan S. , Taylor Benjamin C. , Galos David K.
Published: June 2022

High-energy pelvic ring injuries are associated with a significant rate of mortality and may require urgent stabilization with anterior pelvic external fixation. The iliac crest can be used for pin placement, but supra-acetabular pin placement is biomechanically superior. Traditionally, supra-acetabular pin placement is performed in the operating room, with time-consuming imaging techniques. However, because of the implicit high-energy nature of these injuries, patient physiology may prevent transport to the operating room and preclude the use of tedious image-guided techniques. Here, we describe a technique that can be performed at the bedside and without image guidance. [
Orthopedics
. 2022;45(5):e284–e287.]
The Interactive Multimedia Learning for Power Electronics Course
Authors: Krismadinata  , Isni Kurnia Ulfa , Mulya Rudi , Verawardina Unung
Published: June 2022

The main problem in learning power electronics course is that there are many things that require imagination to understand the principles of power converters. Thereto, learning that occurs is not flexible, which only occurs in the classroom, even though students need a lot of time to understand the material and need media that is able to visualize through illustrations, text, pictures, audio. This paper proposes the development media in the form of Power Electronics Learning Interactive Multimedia Courses which were developed using the help of the Adobe Flash application, so it is hoped that with this media students can learn the material of DC-DC converters and AC-AC converters easily, and can learn flexibly. Therefore, this study aims to develop a learning media that can overcome these problems, in the form of Interactive Multimedia Learning for Power Electronics Courses, which was developed using the help of Adobe Flash applications. The research method used refers to the Instructional Development Institute (IDI) model. The results of this study indicate that the Interactive Multimedia Learning for Power Electronics Course can be successfully used in learning. Meanwhile, the novelty of these findings makes a different contribution from previous interactive multimedia learning, because through media development you can learn with multimedia elements that describe DC-DC converters and AC-AC converters online so that learning becomes more flexible.
Comparison of Two Detection Methods for a Declining Rodent, the Allegheny Woodrat, in Virginia
Authors: Thorne Emily D. , Powers Karen E. , Reynolds Richard J. , Beckner Makayla E. , Ellis Karissa A. , Ford W. Mark
Published: June 2022

Allegheny woodrats Neotoma magister are an imperiled small mammal species most associated with emergent rock habitats in the central Appalachian Mountains and the Ohio River Valley. The monitoring of populations and their spatiotemporal distributions typically has relied on labor-intensive livetrapping. The use of remote-detecting cameras holds promise for being an equally or more effective method to determine species presence, although trap-based captures permit the estimation of other parameters (e.g., survival, population size, site fidelity). In 2017, 2018, and 2020 we compared standard livetrapping with paired cameras for determining site occupancy of Allegheny woodrats in the central Appalachian Mountains of western Virginia. We further examined the influence of baited vs. unbaited cameras at several sites of confirmed occupancy in 2019. We observed that the detection probability using cameras was approximately 1.7 times that of live traps. Also, detection probability at baited camera traps was 1.3–2.0 times that of unbaited camera traps. Estimates of occupancy ranged from 0.44 to 0.49. Our findings suggest that the use of baited remote-detecting cameras provides a more effective method than livetrapping for detecting Allegheny woodrats. Our study provides a framework for the development of a large-scale, long-term monitoring protocol of Allegheny woodrats with the goals of identifying changes in the distribution of the species and quantifying local extinction and colonization rates at emergent rock outcrops and caves throughout the species' known distribution.
Utility of Binary Cuckoo Search Approach for Microarray Data Analysis
Authors: Dash Rasmita , Dash Rajashree , Rautray Rasmita
Published: June 2022

In the recent literature, many metaheuristic approaches has been developed to examine, interpret, and analyze high dimensional data. However, there is always a requirement to design a more productive and cost-effective technique. Many of the authors have acknowledged the capability of cuckoo search approach. Inspired from the blooming application of cuckoo search algorithm (CSA), the authors have proposed a binary cuckoo search algorithm (BCSA) for gene selection and classification of microarray data. With the objective of optimizing gene subset and classification result, BCSA has been implemented. BCSA is optimized using support vector machine (SVM) classifier, and significant gene set is extracted. This experimental study has been conducted over five microarray datasets. Superiority of this gene subset is shown using a few other classifiers such as k-nearest neighbor and artificial neural network. The model performance is also compared with a few other metaheuristic approaches such as particle swarm optimization, genetic algorithm, artificial bee colony algorithm, and differential evolution.
Predictive Analysis of Diabetes Using Machine Learning Algorithms
Authors: Mansoor Nijatullah , Chandra Poonia Ramesh , Samanta Debabrata
Published: June 2022

Diabetes is a very harmful disease that causes high blood sugar levels and occurs when the blood glucose level is high. Diabetes causes numerous diseases in humans: congestive heart failure, stroke, kidney and eye problems, dental issues, nerve damage, and foot problems. With the recent development in the machine learning concept, it is easy to analyze and predict whether a person is diabetic or not. This research mainly focuses on using several prediction algorithms of machine learning. The algorithms used in this research are k-nearest neighbor, logistic regression, SVM (support vector machine), Gaussian naive Bayes, decision tree, multilayer perceptron, random forest, XGBoost, and AdaBoost. Among these algorithms, the XGBoost performed better than the other algorithms achieving an accuracy of 90%, and the f1 score and Jaccard score were 91% and 86%, respectively. The primary goal of this research is to apply numerous machine learning algorithms to diabetic datasets, analyze their results, and select the best one that performs well.
The Role of Artificial Intelligence in Sustaining the E-Commerce Ecosystem
Authors: Rashidin Md.Salamun , Gang Dong , Javed Sara , Hasan Morshadul
Published: June 2022

A large number of customers have used traditional e-commerce portals, where there are no assurance of product quality, display of all features, picture search, virtual chat service, product recommendation and tracking facility. Due to these disadvantages,the customers have switched to Alibaba and Tencent products line and remain in the ecosystem.present study drew on Quo Bias theory to investigate the customer behaviour to remain on the e-commerce platform.Twenty-eight in-depth interviews were conducted to extract the variables and proposed a model based on risk theory as well as CRCB framework. An offline survey was distributed to 649 (valid) ecommerce users; valid data was assessed and analyzed using structural equation modeling (SEM). Results show CRCB was influenced by switching cost and comparative attraction. Moreover, negative (undesirable) attitudes mediate the relationship between risk perception and CRCB, has a positive impact on undesirable WoM. The study findings help the managers and policy makers to devise a new policy and serve the customers in a better way.
Psychological impact and coping strategies in persons who experienced institutional quarantine for COVID-19 in Sri Lanka
Authors: Rohanachandra Y. M. , Alles P. S. , Semage S. , Palihawadana P. , Prathapan S.
Published: June 2022

Background: Quarantine is described to be associated with negative psychological consequences. Assessment of the local contexts need to be done in order to design culturally accepted quarantine measures.
Aims: We aimed to assess depression, anxiety, stress and coping strategies in those undergoing institutionalized quarantine in Sri Lanka.
Methods: A cross sectional descriptive study was done at selected quarantine centers from April to July 2020. All consenting adults under quarantine were included in the study. Depression Anxiety and Stress Scale (DASS-21) and 28-item Brief COPE were used to assess psychological consequences and coping strategies. A telephone interview was conducted 6 months after discharge from quarantine to reassess the psychological status.
Results: Of the 367 participants majority (78.7%, n=289) were males, between 25-45 years (60%, n=220) and married (61.9%, n=227). Depression, anxiety and stress was seen in 6% (n=22), 2% (n=7) and 6% (n=22) respectively. Depression, anxiety and stress were significantly higher in females (p<0.05) and in those in quarantine for more than 10 days (p<0.01). Stress was significantly higher in participants with comorbid medical conditions (p<0.05). Active coping, planning, positive reframing, self-blame and venting were associated with a higher degree of psychological impact (p<0.05). The prevalence of depression, anxiety and stress on follow-up was 1.4%, 0% and 3.6% respectively.
Conclusions: The levels of depression, anxiety and stress in this study was much lower than in previous literature and improved without specific interventions.
COMMEMORAZIONI | PAOLO GRÜNANGER – LA VITA
Authors: Quadrelli Paolo
Published: June 2022

Non disponibile.
Jesus and nostalgia: A nostalgia construction of ‘ho theos tōn paterōn – ὁ θεὸς τῶν πατέρων’ for facing an identity crisis (Mt 22:32)
Authors: Surbakti Pelita H. , Andangsari Esther W.
Published: June 2022

Several theologians unanimously accorded well with the notion that the writer of the Gospel of Matthew was a pastoral theologian. Nevertheless, the pastoral dimension of Matthew 22:32 has not been subjected to much scrutiny. In the text, Jesus celebrated the tradition of calling the God as the ‘God of the Fathers’. The tradition revealed that Jesus adapted the pastoral approach, which is termed as nostalgia in psychology. In empirical psychology researches, utilising nostalgia provides many positive benefits for people who have psychological problems, including an identity crisis. By using a psychological text to sharpen the understanding of the biblical text, this research showed the nostalgic construction in the tradition as a pastoral approach to the readers who were in a situation of a major crisis.Contribution: By using the nostalgia as a psychological text, this article attempts to explore the pastoral dimension of Matthew 22:32, which seems absent in the study of Matthew 22:32.
Clinical review of the clinical necessity of lumbar punctures performed on adults at National District Hospital Emergency Department
Authors: Geldenhuys Suné , Boltman Cecil , Steinberg Wilhelm J. , Botes Johan , Van Rooyen Cornel
Published: June 2022

Background: Previous studies have found that indications for lumbar punctures (LPs) are managed differently, which raises the question of whether all LPs performed are clinically necessary. This study aimed to determine whether unnecessary (clinically not indicated) LPs were being performed at a district hospital in the Free State, South Africa.Method: This was a retrospective descriptive study. A list from the National Health Laboratory Service (NHLS) was used to identify all patients on whom an LP was performed in the adult emergency department of National District Hospital (NDH) in Bloemfontein, from 1 January 2018 to 30 June 2018. Data were captured on a data sheet and included demographic information, clinical signs and symptoms the patients presented with and the cerebrospinal fluid results.Results: A total of 364 patients fit the inclusion criteria. Of these patients, 97 files (26.6%) could not be found, patient gender and LP results could be retrieved from the NHLS barcodes. After reviewing the presenting symptoms and signs captured on the 267 files, the primary researcher considered 150 (56.4%) of the LPs performed to have been carried out unnecessarily. From the total population of 364 patients, 246 (67.6%) of the LP results were normal. Only 118 (32.4%) of the LPs performed showed some form of central nervous system pathology. Of the 150 LPs assessed to have been unnecessarily performed, 124 (84.0%) were normal.Conclusion: This retrospective review indicates that a high percentage of LPs that were clinically not indicated were performed at NDH during the study period.
Prevalence and distribution of selected cervical human papillomavirus types in HIV infected and HIV uninfected women in South Africa, 1989–2021: A narrative review
Authors: Rikhotso Rixongile R. , Mitchell Emma M. , Wilson Daniel T. , Doede Aubrey , Matume Nontokozo D. , Bessong Pascal O.
Published: June 2022

Background: Human papillomavirus infection, a causative agent of cervical cancer, is of great concern, more so in populations with high HIV prevalence, such as South Africa.Aim: This review aimed to examine the prevalence and distribution of selected cervical human papillomavirus (HPV) types in HIV infected and HIV uninfected women in South Africa.Methods: PubMed and Web of Science databases were searched using key words. For data integrity, data was assessed by two authors independently. The study inclusion criteria comprised records on cervical HPV, HPV genotyping and HPV type distribution among South African women. Statistical analysis was performed using Social Science Statistics.Results: Sixty-nine articles met the inclusion criteria for analysis. Data on cervical HPV prevalence and type distribution was available only for five of the nine provinces of South Africa. Only 4/69 studies used sequencing as an approach to identify HPV types. In a general population, HPV type 16 was the most frequent (8.80%), followed by types 35 (4.86%), 18 (4.14%), 58 and 52 with the frequency of 3.65% and 3.62%, respectively. Furthermore, the least frequent type was HPV 70 (0.74%). Both HIV infected and HIV uninfected populations had a higher prevalence of high-risk human papillomavirus (hrHPV) types 16, 18 and 35 than other HPV types; while HPV types 6, 11 and 70 were the least frequent types from these populations. Lastly, HPV 16 was the most predominant type among women with normal (2.03%) and abnormal cervical cytology (6.60%).Conclusion: Expanding on HPV genotyping will improve the knowledge in patterns of HPV type distribution in South Africa that will further help in decision making to improve current diagnostics, and future vaccine development and assessment.
Well-posedness for a class of phase-field systems modeling prostate cancer growth with fractional operators and general nonlinearities
Authors: Colli Pierluigi , Gilardi Gianni , Sprekels Jürgen
Published: June 2022

This paper deals with a general system of equations and conditions arising from a mathematical model of prostate cancer growth with chemotherapy and antiangiogenic therapy that has been recently introduced and analyzed; see P. Colli et al. [Math. Models Methods Appl. Sci. 30 (2020), 1253–1295]. The related system includes two evolutionary operator equations involving fractional powers of selfadjoint, nonnegative, unbounded linear operators having compact resolvents. Both equations contain nonlinearities and, in particular, the equation describing the dynamics of the tumor phase variable has the structure of an Allen–Cahn equation with double-well potential and additional nonlinearity depending also on the other variable, which represents the nutrient concentration. The equation for the nutrient concentration is nonlinear as well, with a term coupling both variables. For this system we design an existence, uniqueness, and continuous dependence theory by setting up a careful analysis which allows the consideration of nonsmooth potentials and the treatment of continuous nonlinearities with general growth properties.
Impact of Purdue Improved Cowpea Storage (PICS) Bag on the Profitability of Cowpea Storage in Kontagora Local Government Area of Niger State
Authors: Maikasuwa Mohammed A. , Izo Abdullahi A.
Published: June 2022

The study examined the impact of Purdue Improved Cowpea Storage (PICS) Bag on the Profitability of CowpeaStorage in Kontagora Local Government Area of Niger State, Nigeria. Data were collected using a structuredquestionnaire. Descriptive statistics, multiple regression, independent t-test and farm budgeting models wereemployed for data analysis. Results of the descriptive analysis revealed that cowpea storage in the study areawas gender bias given that majority (94.2%) of the respondents were men. About (98.3%) had one form offormal education or the other, while (76.7%) had above 15 years farming experience. Results from the CobbDouglas regression model indicated that among socio-economic factors such as age, household size and yearsof experience, only age have a significant positive impact on the profitability of cowpea storage using PICSbag (p<0.097). The profitability analysis puts the average net revenue for chemical and PICS bags users at₦48,210 and ₦82,730 per hectare, respectively. The difference in profit was statistically significant (P< 0.00),implying that PICS bags usage was more profitable and had an impact on cowpea storage in the study area.Against this background, it was recommended that Niger State Government, through the Extension Componentof the State Agricultural Mechanization and Development Authority (NAMDA) promote efficient use ofimproved storage technology (PICS bag) amongst cowpea farmers in the study area with the view to ensuringprofitable and sustainable cowpea production.
Impact of Biofilms on Water Distribution System of a Tertiary Institution in Northern Nigeria
Authors: Yusuf Abbas B. , Muhammad Amina , Gulumbe Bashar H. , Danlami Muhammad B. , Aliyu Basiru , Sodangi Dawah I.
Published: June 2022

The aim of this research was to determine the impact of biofilms on water distribution system of FederalUniversity Birnin Kebbi. Samples were collected from different water distribution pipelines in the University.Total heterotrophic count was carried out to determine the microbial load and Most Probable Method (MPN)was used to detect the presence of fecal coliforms in the water. Total heterotrophic bacterial count rangedbetween 1.6×103 to 3.9×103 cfu/ml. Escherichia Coli showed the highest frequency (25%) of occurrence, whilethe least frequency of occurrence (5%) was recorded for Klebsiella spp and Enterobacter spp respectively. Theisolates identified were Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella spp,Enterobacteria Spp, Salmonella Spp and Bacillus Spp. Presence of these isolates is of significant concern andmay cause some water borne diseases like diarrhea, dysentery etc. It is therefore recommended that water boardtreatment plant should use disinfectant chemicals like chlorine and perform regular proactive preventivemaintenance, microbial monitoring and infrastructure replacement and repair so as to reduce the occurrence ofbiofilms in the Water Distribution system.
The Impact of Information Technology on Organizational Performance of Nigerian Immigration Service, Kebbi State Command
Authors: Yauri Aliyu R.
Published: June 2022

This study investigated the impact of information technology on organizational performance of NigeriaImmigration Service (NIS) Kebbi State Command. To achieve the objectives of the study, the primary data wascollected through the use of questionnaires. The population used for this research comprises of the entire personnelof NIS Kebbi State Command (465) while Krejcie and Morgan 1970 table was used to select the sample size of214 personnel for the purpose of this study. The 214 questionnaires were administered for data collection. Fromthe results obtained it is revealed that there is a positive relationship between the information technology andorganizational performance; it also shows that information technology has significant effect on organizationalperformance. The study revealed that there are IT devices available for the personnel of NIS Kebbi State Commandto discharge their statutory duties efficiently. The study revealed that the use of IT contributed to increase in revenuegeneration, helped provide the up-to-date technology in computers, and improved the data collection process andreporting by the NIS personnel. This helped in making decision making process faster, improved the operationalefficiency and productivity of the personnel, facilitated better communication in service delivery, helped securedthe information and helped improved the performance of organization. Which means that there is significantrelationship between the Information technologies with the organizational performance of the staff of immigrationservice in Kebbi state offices.
Trajectory Optimization of Quadrotor-UAV Drone Using Genetic Algorithm
Authors: Yauri Aliyu R. , Ahmad Abdulkadir M. , Kamba Musa I.
Published: June 2022

Unmanned Aerial Vehicles (UAVs) Technology recently attracts attention of many researchers; this is due toits numerous potentialities in civil application. One of the key areas of interest by researches is how to achievea total talent of “Sense and Avoid” in the UAV which will enhance safe and efficient trajectory of the vehicle.This is why this paper is going to use an optimization technique to optimize trajectory path of the UAV flight.The chosen optimization algorithm is Genetic algorithm (GA) which is going to be use to optimize the trajectoryof UAV by determine the shortest path of flight as well as obstacle-free path in order to save energy and timeduring flight. MATLAB and Simulink are used to simulate as well as evaluate the algorithm. In the result fromthe experiment, it appeared that an optimized trajectory path is tremendously better than path from the firstrandomly generated population in term of distance covered as well as time taken before triumph the target pointfrom the initial point.
Antibacterial Potential of Pod Extracts of Gum Arabic Tree (Acacia nilotica)
Authors: Fasogbon Albert O. , Odewade Joseph O. , Omojoyegbe Ruth T.
Published: June 2022

This study was designed to determine the antibacterial potential of Gum Arabic Tree (Acacia nilotica) pod extracton some pathogenic bacteria which could have health implications. Powdered pods of Acacia nilotica wereextracted with ethanol and distilled water separately. The extracts were tested for antibacterial activities against thetest isolates using Agar Well Diffusion method. The extracts were further subjected to qualitative phytochemicalscreening to detect secondary metabolites present using standard procedures. The minimum inhibitory andminimum bactericidal concentrations of the extracts were also detected using standard procedures. Thephytochemical screening revealed certain metabolites (steroids, saponins, terpenoids, tannins, flavonoids, andalkaloids) in the ethanol and aqueous extracts, except for steroids, which were present only in ethanol extract. Theresult of the sensitivity test showed that ethanol pod extract produced the highest and least zone of inhibition againstPseudomonas aeruginosa (22 mm) and S. typhi (15 mm) respectively at 50mg/ml while the aqueous extract of thepod exhibited activity against S. typhi (20 mm) and E. coli (12 mm) at 50 mg/ml. This showed that the A. niloticapod extracts could serve as potential antibacterial agents against pathogenic bacteria.
Adsorption of Congo Red Dye from Aqueous Solution using ZnO and Al2O3/ZnO Composite: Isotherm, Kinetic and Thermodynamic Data
Authors: Bello M. O. , Oyewumi-Musa R. T. , Abdus-Salam N. , Gbenro M. T. , Egbeneye O. G.
Published: June 2022

Herein, an adsorption study of congo red (CR) dye onto ZnO and Al2O3/ZnO  is reported. ZnO was prepared using conventional chemicals by co-precipitation method and Al2O3 used in the composite was prepared through recycling of aluminium waste. Information about the materials was obtained through spectroscopic techniques. A batch adsorption method was used to obtain the adsorption data from which isotherm, kinetic and thermodynamic parameters were obtained. The result of the adsorbents characterisation revealed the expected properties of the prepared materials. The adsorption capacities at 250 mg/L of CR dye were 24.33 mg/g and 24.57 mg/g for ZnO and Al2O3/ZnO respectively. The isotherm study of the adsorption process revealed that Langmuir model fitted best the adsorption data with monolayer adsorption capacities (qm) of 27.67 mg/g and 33.39 mg/g for ZnO and Al2O3/ZnO respectively. The adsorption was rapid within the first 15 min and the equilibrium was reached at 45 min. The kinetic study followed a pseudo-second-order model with the rate constant of 0.049 and 0.093 g.mg-1.min-1 for ZnO and Al2O3/ZnO  respectively. Experimentally, the process was endothermic and was supported by the positive values of enthalpy (ΔH) with positive values of entropy (ΔS). The change in free energy (ΔG) is negative at all temperatures studied, indicating spontaneity but more spontaneous for Al2O3/ZnO than ZnO. The adsorption of CR dye from an aqueous solution onto ZnO as an adsorbent can be slightly improved upon by the introduction of Al2O3 to form Al2O3/ZnO composite.
The Use of Coconut-Shell Based Activated Carbon as an Adsorbent in the Treatment of Hard Water
Authors: Adewuyi A. S. , Olabanji T. O.
Published: June 2022

One of the undesirable characteristics of some groundwater sources is hardness, which has adverse effects on water pipes, boilers and soap consumption. Therefore, several treatment processes have been introduced to remove or reduce the hardness from water. One of the innovations in this regard is coconut-shell which is readily available and could be used to produce resource materials such as activated carbon that is of public health importance. The initial values of Calcium, Magnesium and Total Hardness in the raw water sample were 120.24mg/L, 98.29mg/L and 588.00mg/L, respectively which are above the World Health Organization (WHO) standard. The highest quantities of Calcium, Magnesium and Total Hardness were removed at a contact time of 60 minutes with removal efficiencies of 80%, 60.44% and 66.71%, respectively. Also, the optimum dosage occurred at 1.2g for Calcium hardness, 1.5g for Magnesium hardness and Total hardness. In conclusion, the adsorbent obtained from the coconut-shell has the potential of removing Calcium, Magnesium and Total Hardness in water.
Performance Evaluation of Irefin (Isan Ekiti) Clay in the Production of Refractory Bricks
Authors: Ologunwa T. P.
Published: June 2022

The performance evaluation of refractory brick produced using Isan Ekiti clay (Ball clay and Kaolin) with saw dust as the combustible materials was investigated with a view of determining the most suitable percentage compositions. The clay samples were sourced from Isan Ekiti was crushed, pulverized, and sieved to produce very fine grains of less than 120 μm particle size distribution for all samples. Four compositions were developed from admixture of the clay and combustible materials. Samples produced from the compositions were then tested for shrinkage, porosity, bulk density, average crushing strength, and water absorption after firing to 1000 oc. Samples A-D  had percentage total shrinkage ranging from 8% - 20%  with corresponding bulk density ranging from  0.66g/cm3 – 1.07g/cm3. All the samples had crushing strength ranging from 1.1- 4.2 N/mm2 with corresponding percentage porosity ranging from 47.7% - 65.2%, while the percentage water absorption range from 41.3% - 98.4%. It was discovered that the higher the combustible materials the higher the shrinkage, porosity and water absorption, while the lower the bulk density and crushing strength of the bricks. However, sample D of the bricks produced with the lowest percentage combustible gave the average result when considering the percentage shrinkage, porosity, bulk density, crushing strength, and water absorption. Therefore, sample D with (70% of kaolin, 15% of ball clay, and 15% of saw dust) was used in the production of refractory bricks, and thereafter used to build a testing kiln.
Synthesis and Characterization of Zinc Oxide Nanoparticle for the Adsorptive Remediation of Petrochemical Effluents
Authors: Jamiu W. , Adekola F. A. , Jimoh A. A. , Ameen O. A. , Adebusuyi T. A.
Published: June 2022

The zinc oxide nanoparticle was synthesized via precipitation method. It was characterized using SEM-EDX, FTIR and TEM for morphology, elemental, functional groups and internal structure respectively. The physicochemical behaviour of a refinery effluent was assessed. The untreated raw refinery effluent from the point of discharge contained very high concentrations of pollutants for all the parameters, ranging between, pH (6.52-6.82), Turbidity (10-12 NTU), conductivity (266-289μs/cm), COD (116-138 mg/l), BOD (14-18.5 mg/l), DO (7.5-15.6 mg/l), TDS (436-486 mg/l), TSS (127-133 mg/l), Oil and grease (14.8-16.3 mg/l), sulphate (113-125 mg/l) and chloride (240-280 mg/l). The effluent was treated with ZnO nanoparticle and reduced the pollutants to the normal permissible limit set by WHO, FEPA and NESREA standard for portable water. The treated effluent sample showed values ranging between, pH (6.55-6.6), Turbidity (4.2-4.5 NTU), conductivity (245-246 μs/cm), COD (39-40 mg/l), BOD (10 mg/l), DO (5.6-10.4 mg/l), TDS (151-183 mg/l), TSS (24-28 mg/l), Oil and grease (7.3-9.5 mg/l), sulphate (100 mg/l) and chloride (200 mg/l). The heavy metals profile that was investigated are Fe, Cu, Zn, Pb, Cd and Cr of which were found above the WHO and FEPA permissible limit, however, on the contact with the adsorbent therefore reduced the metals to the permissible limit. It can be ascertain that ZnO nanoparticle can be used as an effective adsorbent for the treatment of petrochemical effluent.
Biochemical And Physiological Response Of Abelmoschus esculentus (L.) Moench To Food Industry Processing Effluent
Authors: Sam S. M.
Published: June 2022

This study investigated the response of Abelmoschus esculentus to food industry processing effluent at different concentrations of 0%, 20%, 40%, 60%, 80% and 100%.  The physicochemical properties of the effluent and experimental soil were analysed. The effluent had a high BOD of 39.20mg/l compared to WHO standard of 10 and a pH of 6.12 which is within WHO allowable limit of 6.5-8.5. The conductivity was low 130.00 μs/cm compared to WHO standard of 750.5. The study also revealed that food industry effluent had a significant (p<0.05) effect on the morphological features, chlorophyll and heavy metals composition of Abelmoschus esculentus, The growth parameters were significantly (p<0.05) reduced with increase in the concentrations of the effluent. High concentration of the effluent at 80% induced high chlorophyll content at 24.05mg/ml and also increased the level of heavy metal bioaccumulation in Abelmoschus esculentus. This study suggests that high concentration of food processing industry effluent could be detrimental to the growth and productivity of Abelmoschus esculentus.
Assessing the Impact of Urbanization on Dumpsite Suitability Criteria in Benin City, Nigeria
Authors: Oriakhi O. , Okonofua E. S.
Published: June 2022

The fast growing economy has created different criteria in dumpsite selection as the challenge to manage the increasing rate of solid waste produced is still present. This research took Benin City as a case study obtaining data from an open-source database which are from remote sensing, Edo State open-data platform. Benin City just like most urban areas in other developing countries faces the challenge of solid waste management of which about thirty-four percent (34%) of waste generated are left at the point of generation and only sixty-six percent (66%) of waste generated are regularly collected for disposal. The challenges of municipal solid waste management include insufficient policy and legal framework, poor environmental planning and implementation, inadequate infrastructure, budgetary and operational constraints, inadequate environmental education, and overpopulation.
Gongronema latifolium Benth. Leaves (Uteze) Ameliorate Malaria Infection in Plasmodium berghei-Infected Mice
Authors: Orumwensodia K. O. , Uadia P. O.
Published: June 2022

Herbs are vital sources of bioactive compounds. This study evaluates the antimalarial, antioxidant, phytochemical and nutritional properties of Gongronema latifolium Benth. (Uteze) leaves. Pulverized dry leaves sample were macerated in hexane, methanol, ethanol and distilled water to obtain their respective extracts. The antimalarial efficacy of these extracts was assessed in male Swiss albino mice infected intraperitoneally with chloroquine-sensitive Plasmodium berghei NK65, using the chemo-suppressive, prophylactic and mean survival time (MST) assays. Phytochemical and proximate analyses were assessed by standard protocols. The antioxidant capacity of the extracts was analyzed using DPPH radical scavenging and ferrous ion chelating assays. From the results, the plant had significant (p < 0.05) antimalarial activity compared to the infected untreated control. The chemo-suppressive activity of the extracts declined accordingly; ethanol (46.34%) > methanol (43.16%) > aqueous (32.24%), while their prophylactic activity declined in the order of aqueous (40.25%) > ethanol (38.99%) > methanol (26.94%). Only MST in the four-day chemo-suppressive assay was significant (p < 0.05) compared to the infected untreated control. Tannins, alkaloids, flavonoids, saponins, phenolics, cardiac glycosides and proanthocyanidins were detected in reasonable quantities in the plant. The plant also had antioxidant activity as the aqueous extract (IC50 48.50 ± 0.42) scavenged DPPH radicals better, while methanol extract (IC50 21.15 ± 0.33) chelated ferrous ion radicals more compared to other extracts. Meanwhile, the percentage nutritional composition of the plant was moisture (6.23 ± 0.01), total ash (2.22 ± 0.02), crude fat (16.32 ± 0.04), crude fibre (1.04 ± 0.01), crude protein (9.33 ± 0.58) and nitrogen free extract (64.85 ± 0.63). In conclusion, the antimalarial activity of Gongronema latifolium Benth. (Uteze) leaves could be due to its rich phytochemical and nutritional properties.
Pauline Privilege: A Pastoral concern in the South African Catholic Church
Authors: Arima Dr. Cyril
Published: June 2022

The study aims at initiating a productive dialogue on the issue of Pauline privilege (privilegium Paulinum) in a South African context. Pauline privilege is basically a Roman Catholic church instrument for resolving marriage problems by dissolving marriages between two people who were not baptized at the time of their marriage. The Pauline privilege derives from Paul's instructions in the First Epistle to the Corinthians in 1 Corinthians 7:10–15. Paul teaches us that a Christian convert from paganism should not use baptism as a cause to divorce an unbelieving spouse "but if the unbeliever departs, let him depart”. From the 4th century most Catholic analysts have understood 1 Corinthians 7:10-15 to mean that the marriage bond between two unbaptized
persons is dissolvable when the unbaptized spouse refuses passive living together with the baptized spouse, and that it is essentially dissolved when the baptized spouse contracts a sacramental marriage (Dulau, 1951). The failures of Pauline privilege are investigated and described in this article, as well as how these failures have become a pastoral problem in South Africa. It provides some solutions that the Catholic Church in other countries can use. The methodology of textual analysis of marriage pastoral care was used in this article, which was based on Saint Paul's first letter to the Corinthians (1 Corinthians 7: 10-16).
Geotechnical Site Characterization-A Review
Authors: Pawar Ashish , Singh Vaibhav
Published: June 2022

Geotechnical characterization of soil helps in determine and interpret soil behaviour in a specific location, and determine soil properties such as moisture content, specific gravity, plasticity, grain size analysis, strength properties, compressibility, and bearing capacity. The nature of geological formation is complex. The soil characteristics vary significantly with depth and horizontally at a particular site, as is commonly observed. Appropriate identification of different layers of soil, horizontal variations in layer depth and thickness, assessment of soil type and numerous technical qualities, and their variability within each layer are all critical. The soil testing process benefits the project's decision-making and cost-estimating stages. In this paper, a review has been presented regarding different geotechnical site characterizations conducted worldwide for various civil engineering projects were investigated.
Planning to Restructure the Space Economy in Africa: Introducing Neo-Mercantile Planning From Theory to Practice
Authors: D. C. Okeke
Published: June 2022

The incidence of disconnect between the modern and local economy in the development of urban regions has sustained urban productivity decline in Africa since mid-twentieth century. The resilience of the status quo, regardless of neo-liberal planning intervention, necessitates the search for an alternative planning approach. This paper considers the neo-mercantile planning option, which seeks to restructure the space economy through spatial integration. The paper shares how neo-mercantile planning protocol bears on development planning to rework the space economy of Enugu urban region in Enugu State, Nigeria as a way forward for planning in Africa.
Las prestación de garantías para el pago de indemnizaciones en la demolición de inmuebles por orden judicial
Authors: Alcudia Morales Mónica
Published: June 2022

El punto 3 del artículo 108 de la Ley 29/1998 Reguladora de la Jurisdicción Contencioso-Administrativa introducido por la Ley Orgánica 7/2015 vigente desde el 1 de octubre de ese mismo año, ha generado desde su entrada en vigor y en mi opinión seguirá generando problemas de aplicación práctica.

El presente trabajo realiza un estudio de las Sentencias del Tribunal Supremo existentes hasta el momento completando dicho análisis con la doctrina que apoya o disiente sobre la efectividad de la medida legislativa que pretende, que antes de proceder a la demolición de un inmueble se presten las suficientes garantías para responder al pago de las indemnizaciones debidas a los terceros de buena fe.

Situación que choca frontalmente con el derecho a la ejecución de sentencias en sus propios términos como cuestión incluida dentro del derecho a la tutela judicial efectiva del artículo 24 de la Constitución Española. Se intenta dar una respuesta apropiada a diferentes cuestiones de señalada importancia que podrán servir de nivelador entre la finalidad garantista que pretende y la ejecutividad de las resoluciones judiciales.
Deber de confidencialidad o secreto como límite al derecho de acceso a la información pública
Authors: Idígoras Molina Beatriz
Published: June 2022

El presente artículo analiza la última jurisprudencia del Tribunal Supremo en torno al contenido del derecho de acceso a la información pública a la vista del deber de confidencialidad o secreto, que como límite al ejercicio de aquél derecho establece la Ley 19/2013 de transparencia, acceso a la información pública y buen gobierno , en sus artículos 14.1 y 18. 1.b).
Notas de jurisprudencia.- Tribunal Supremo
Authors: Gamero Casado Eduardo
Published: June 2022

SUMARIO:

I. ACTO ADMINISTRATIVOVI. CONTRATOSIX. DERECHO ADMINISTRATIVO ECONÓMICOX. DERECHO ADMINISTRATIVO SANCIONADORXI. DERECHOS FUNDAMENTALES Y LIBERTADESXIII. FUENTESXV. JURISDICCIÓN CONTENCIOSO-ADMINISTRATIVAXVIII. PERSONALXIX. PROCEDIMIENTO ADMINISTRATIVOXX. RESPONSABILIDAD PATRIMONIAL.
Notas de jurisprudencia.- Tribunal Superior de Justicia de Andalucía
Authors: Rivero Ysern José Luis
Published: June 2022

SUMARIO:

VI. CONTRATACION ADMINISTRATIVAXI. DERECHOS FUNDAMENTALES Y LIBERTADES. DERECHO A LA LIBERTAD SINDICAL Y DERECHO A LA PROTECCIÓN DE DATOSXII. EXPROPIACION FORZOSAXV. JURISDICCION CONTENCIOSO ADMINISTRATIVAXX. RESPONSABILIDAD PATRIMONIALXXII. URBANISMO
El proyecto de ley de presupuestos fracasa en el Parlamento Andaluz
Authors: Vázquez Alonso Víctor Javier
Published: June 2022

El cumplimiento del principio de anualidad presupuestaria es probablemente el dato que mejor contrasta la estabilidad de un gobierno y del propio sistema político. La quiebra de este, máxime cuando se trata de un contexto inflexivo, donde la obsolescencia de unas cuentas públicas prorrogadas para responder a las demandas sociales puede ser más manifiesta, es una anormalidad que, por lo menos hasta hace un tiempo, servía para cuestionar de forma grave la propia gobernabilidad, precipitando por lo normal la convocatoria de elecciones anticipadas.