bluuebunny/crossref_metadata_2025 huggingface dataset:
Flow velocity and implication on particle size of bottom sediment in the commodore channel lagos, southwestern nigeria
Authors: A Rabiu , A S Maigari
Published: May 2023

Flow velocity generally influences the erosion, transport and deposition of sediments. Flow velocity and in relation to particle size distribution in the Commodore channel was investigated with the Acoustic doppler current profiler (ADCP), echosounder and veen van grab. Those equipment were deployed through a low draft survey boat to acquire acoustic and sediment data covering the study area. The ADCP measured the current velocity along fourteen established transect lines while twenty surface sediments samples were collected along the banks and center of the channel respectively. Sediment samples were analyzed for grain size distributions and mineralogicaly composition while the acoustics data were analyzed with Matlab software to produce velocity profiles for the channel area. The study aimed to determine the magnitude and direction of flow of water along the channel with a view to ascertain the sediment transport process.  Results indicated no significant difference in flow velocities along the different channel points. The flow velocity was however slightly higher around the channel mouth than in mid and upper reaches of the channel. The flow velocities showed negative correlation of (– 0.54 and – 0.28) with the sediment characteristics indicating that the sediment particle size distributions is unrelated to the flow velocity. This anomaly in the equilibrium flow velocity suggest  the impact of dredging and the continuous ebbing and flooding of tidal water which resulted to reworking of the sediment particle sizes prior to deposition. The sediment distributions were fine sand, moderately sorted, fine skewed with leptokurtic peaked. Significant fractions of the sediments were deposited in fluvial and shallow marine environments while a few were deposited in the beach and turbidity environment.  Sediments and acoustic data interpreted from the study suggest that sediment supply to the area was by fluvial processes through the barrier lagoon drainage basin.
Book review
Authors: N Nwagbara Eucharia , N Ekwueme Barth
Published: May 2023

In his usual characteristic manner, the author of this book Barth N. Ekwueme, erudite Professor of Mineralogy and Petrology, has written yet another though-provoking literary piece. This current book is a compendium of highlights of homilies he listened to over a period of time as a committed Catholic faithful. The book consists of seven broad lessons viz:

 

Lessons from Advent (4)

Lessons from the season of Christmas (4)

Lesson from the season of Lent (12)

Lesson from the season of Easter (11)

Lessons from ordinary Time (16)

Lessons from Special Feasts (19)

Lessons from Important Events (6)
Exploring a mobile application for pest and disease symptomatic diagnosis in food crops in Nigeria: Implications of its use by smallholder farmers in sub-Saharan Africa
Authors: Akinyemi A. O. , Fadele E. , Ojeleye A. E
Published: May 2023

Crop pests and diseases are major impediments to food security in sub-Saharan Africa. Timely and accurate diagnosis of invasive crop pests and diseases promote crop protection efforts. The use of digital mobile application technology and image processing tools for precision agriculture and pest identification and monitoring is gaining attention but limited research has tested its accuracy, especially in sub-Saharan Africa. In this study, the accuracy of Plantix - your crop doctor (a general-purpose mobile application for plant pests and diseases diagnosis) was evaluated on common pests and diseases of some staple crops grown in South-Western Nigeria. The results showed 90-100% accuracy of major pest and disease symptoms detected on maize (Zea mays), okra (Abelmoschus esculenthus), cassava (Manihot esculenta), and plantain (Musa paradisiaca), and the application showed 100% accuracy when used to diagnose similar crop types, but that are healthy. However, pest symptoms on Celosia (Celosia argentea), Amaranth (Amaranthus sp.), and Roselle (Hibiscus sabdarifa) were not detected by the mobile application, probably because these crops were not yet included in the database of this application. The exploration of this mobile application can provide technical services for farmers. There is a need to update the database of Plantix with local and indigenous crops in sub-Saharan Africa and develop home-grown mobile applications for disease and pest diagnosis and monitoring.
Kinetics and equilibrium adsorption studies of chromium (VI) and iron (III) from aqueous solution systems using hydroxyapatite, activated carbon and their composites
Authors: Adegoke H.I. , Ashola M. O. , Audu M. F.
Published: May 2023

Industrial effluents have become an environmental issue harming the ecosystem, remediation of these effluents is critical in order to mitigate some of this issue. Three adsorbents, activated carbon from sugarcane bagasse (ASB), hydroxyapatite (HAP), and their composites (ncpA), were prepared for the adsorption of Cr (VI) and Fe (III) from wastewater in this work. The hydroxyapatite was synthesized using the wet precipitation method, and the activated carbon was derived from sugarcane bagasse, resulting in a composite with a hydroxyapatite to activated carbon ratio of 1:1. The adsorbents surface and chemical properties were determined by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunauer-Emmett-Teller 2 2 -1 (BET), and X-ray diffraction (XRD). The BET surface areas were 1.34 ± 0.04 m2/g and 26.4 ± 0.4 m2g4 for HAP and ASB respectively. The influence of initial concentration of metal ions, adsorbent dosage, pH, contact time and temperature on the adsorption process were investigated. Two isotherm models and different kinetic models were used in fitting the experimental data. The adsorption of Cr (VI) and Fe (III) fitted well into the Langmuir isotherm model with maximum monolayer adsorption capacities of 19.92 mg/g, 16.69 mg/g and 10.33 mg/g respectively for Cr (VI) and 113.64 mg/g, 113.64 mg/g and 107.54 mg/g respectively for Fe (III) removal onto HAP, ASB and ncpA respectively. The pseudo-second-order model that best suited the kinetic data was chemisorption-controlled, and this is referred to as the mechanism of the adsorption. Sum of square 2 error (SSE) and non-linear chi-square (ꭓ2 ) were used to further validate the mechanism.
Porosity prediction using 3D seismic genetic inversion at F3 Block, offshore Netherlands
Authors: Adeoti L. , Bako M. E. , Adeogun O. Y. , Anukwu G. C. , Adegbite T. J.
Published: May 2023

Seismic and well information have been incorporated with a genetic inversion workflow using a supervised neural network in the F3 block, offshore Netherlands with a view to properly predicting porosity distribution within the selected reservoirs. This would provide spatial distribution of porosity within the field. Petrophysical parameters were estimated for the identified reservoirs (FS4, FS8, XYZ and ABC) across the four wells (F02-01, F03-02, F03-04 and F03-06) ranging from 780 to 1500 ms. Acoustic impedance (AI) and porosity cubes weregenerated using a genetic neural network. Thereafter, acoustic and porosity maps were extracted for the selected reservoirs. The results of the inversion reflect that the acoustic impedance in the region varies from 2000 to 6000 kPa.s/m, indicating unconsolidated and less compacted formation within the study area. Porosity within the selected reservoirs varies from 0.25 to 0.40, which reflects very good to excellent porosity values within the study area. The plot of porosity from well (F02-01) and the predicted porosity from genetic inversion reveals a relatively good correlation coefficient of 68%. The hydrocarbon regions within the F3 block are in the Upper Jurassic – Lower Cretaceous strata which are found below the interval available for this study. The study underscores that the genetic inversion algorithm has proven effective in predicting porosity within the study area.
GC-MS analysis of constituents of the essential oil from the leaf and fruit of Nigerian cultivar of Annona muricata
Authors: Osibote E. A. , Olajide O. T.
Published: May 2023

Annona muricata (soursop) has a long history of ethnomedicinal properties, which is associated with essential oils present in the plant. The bioactive compounds in the oils from the leaf and fruit of Nigerian variations of the plant are thus provided in this study. GC-MS was used to analyse and identify the chemical compounds present in the essential oil from A. muricata leaf and fruit. The major chemical compounds in the leaves were caryophyllene (26.04%), (1S-cis)-(δ-cadinene) (12.62%) and spathulenol (8.49 %). Others that were obtained in less quantities included α-cadinene (5.64%), tau-cadinol (3.84%), α-caryophyllene (3.49%) and phytol (2.83%). In the fruit oil, the compounds identified were n-hexadecanoic acid (24.82%), E-nerolidol (15.30%) andcaryophylene (32.30%). The presence of the compounds in the essential oil may provide scientific basis for the uses of the plant in the management of cancer and other parasitic infections.
Heavy metal occurrence within urban agriculture practices in eastern zones of Nairobi city
Authors: Ng’ang’a Njenga John , Bosco Mukundi John , Wasike Masinde Peter , Wanjiru Kihurani Agnes
Published: May 2023

Urban agriculture although growing in importance, requires farmer practices to adapt to dynamics of urbanization having implication on quality of  produce and public perception. The objective of this research was to assess heavy metal occurrence in inputs and food crops for urban farms in the  eastern zone of Nairobi, determine differences in element uptake by crops and to examine influence of environmental quality of the surrounding spaces.  A quasi research design approach was used to identify farm plots for field survey in three locations. Samples of tomatoes (Lycopersicon esculentum),  arrowroots (Colocasia esculenta), and kales (Brassica oleraceae var. Acephala), water and soil samples were collected. Concentration of cadmium, manganese, zinc and lead were analysed using Atomic Absorption/Flame Emission Spectrophotometer. One way ANOVA was used to examine mean  differences of heavy metals between locations and compare transfer factor (TF) index of the crops. Elements that were above allowable limits (mg/kg) in  the crops were Cd (1.7 - 4.49), Mn (62.54 - 89.15), Pb (0.161 - 0.56) and Zn (0.44 - 4.95) in arrowroots; Cd (1.76 = 5.27) and Mn (3.65 = 26.86) in kales and Cd  (1.17-3.51), in tomatoes. Cadmium content was highest in farm plots within Kasarani (2.44±0.86 mg/kg) and was significantly different from other two  locations (p < 0.05, Tukey HSD test). Between the neighbourhood qualities, heavy metal contents were different but not significant (p > 0.05) between  classes. The mean TF index for the heavy metals decreased in the order Cd>Pb>Zn>Mn. Transfer factor index of more than 1 for cadmium was observed  in arrowroots, kales and tomatoes. Based on FAO/WHO standards, the measured heavy metal contents were high for health concern. Produce from areas  designated as of low environmental quality, were not necessarily contaminated as perceived. Urban agriculture producers in Nairobi need  technical risk reduction measures and legislative support to guarantee quality produce and valuable participation in the urban food system framework.
Improve student performance in the psychiatry subject with 3D animation
Authors: Kabulunze Jumbe Gilbert , Mwangi Henry , Ogada Kennedy
Published: May 2023

The integration of information communication and technology in medical education has led to the emergence of modern instructional tools, thus  transforming pedagogy. Modern instructional tools like 3D animation are very effective tools for pedagogy, especially in subjects that involve complex  concepts that are difficult to represent with traditional instructional tools such as textbooks, and lectures. The main objective of this study was to  determine the effectiveness of using 3D animation in teaching psychiatry to clinical medicine students at the Kenya Medical Training College. The study  used a randomized comparative design, where participants were randomly assigned to either a treatment group (3D animation) or a control group  (textbook). Data were collected using self-administered questionnaires. The study targeted 61 respondents, and the sample size was 53 respondents (11  lecturers and 42 students). A pilot test to ensure the reliability and validity of the questionnaires was done on 30 respondents from the nursing  department at Kenya Medical Training College. The analysis of the results was done using the Statistical Package for Social Sciences software version 29, whereby descriptive statistics were used to describe feedback from the lecturers and students while independent sample t-tests were used to determine  the statistically significant difference in student scores. The t-test results showed a statistically significant difference in means between the two groups,  with t (40) = -7.332, p < 0.001 (two-tailed). The mean difference between the two groups was -8.190, with a standard error of 1.117. The 95% confidence interval of the difference ranged from -10.448 to -5.933. Therefore, the use of 3D animation had a statistically significant positive effect on test scores  compared to textbook instructional materials in the context of teaching psychiatry. The study recommends the integration of 3D animations in the  medical education curriculum at Kenya Medical Training College and other institutions of higher learning.
Minkowski's successive minima in convex and discrete geometry
Authors: Aliev Iskander , Henk Martin
Published: May 2023

In this short survey we want to present some of the impact of Minkowski's
successive minima within Convex and Discrete Geometry. Originally related to
the volume of an $o$-symmetric convex body, we point out relations of the
successive minima to other functionals, as e.g., the lattice point enumerator
or the intrinsic volumes and we present some old and new conjectures about
them. Additionally, we discuss an application of successive minima to a version
of Siegel's lemma.
Optimization of a dynamic absorber with nonlinear stiffness and damping for the vibration control of a floating offshore wind turbine toy model
Authors: Mattei Pierre-Olivier , Côte Renaud
Published: May 2023

Passive vibration mitigation of offshore wind turbines using nonlinear absorbers or nonlinear energy sinks has started to receive attention in the literature. In most cases, little attention has been paid to the possibility of detached resonances that occur when the nonlinear energy sink is attached to the linear system describing the wind turbine. Sea motions that alter the initial conditions of the floating offshore wind turbine may cause the nonlinear energy sink to operate at one or more detached resonances, completely negating its ability to control turbine vibration. In this paper, we are interested in optimizing the parameters of a nonlinear energy sink with nonlinear stiffness and nonlinear viscous damping for vibration control of a toy model (e.g., a linear mass-spring-damper system) of a floating offshore wind turbine over its entire operating range. The mechanism of cancellation of the detached resonance is studied analytically under 1:1 resonance. It is shown that the nonlinear energy sink with properly tuned nonlinear viscous damping allows the complete elimination of undesired regimes and completely restores the absorber's ability to strongly limit the vibration of a floating offshore wind turbine over its entire forcing range. The results obtained over a wide range of parameters suggest that both the optimal nonlinear energy sink parameters (linear and nonlinear stiffness and nonlinear damping) and the damping of floating offshore wind turbine vibration depend on simple power laws of nonlinear energy sink mass and linear damping.
Significado de los trastornos de voz. Un estudio cualitativo desde la mirada de profesores de enseñanza básica
Authors: Jara Cabrera Gerson , Cumilaf Ampuero Camila , Cárdenas Pacheco Emilia
Published: May 2023

Objetivo. El objetivo del presente estudio fue describir el significado que le otorgan a los trastornos de voz los profesores y cuáles son las motivaciones que los llevan a no consultar con un especialista.
Método. Para tal propósito, se realizó un estudio cualitativo en el que participaron 16 profesores de enseñanza básica. La información fue obtenida mediante una entrevista semiestructurada, la cual fue grabada y luego transcrita para su posterior análisis. El estudio contó con la aprobación del comité de ética y el consentimiento informado de cada uno de los participantes.
Resultados. En cuanto a los resultados, surgieron cinco categorías: Conocimiento de los problemas de voz; Entrenamiento formal y recursos vocales; Sintomatología vocal experimentada a lo largo de la carrera docente; Afectación de la calidad de vida; Tratamiento y abordaje de los problemas de voz. Todos los participantes tienen alguna noción de los problemas de voz, asociándolos principalmente con algún síntoma o molestia experimentada. La gran mayoría declara nunca haber recibido formación en cuanto al uso de la voz y expresan sentir que su voz ha ido cambiando a lo largo de los años de ejercicio profesional, volviéndose más grave o ronca. Destaca que en cuanto al tratamiento, quince de los participantes nunca han consultado con especialistas, sino que recurren a remedios caseros o populares.
Conclusión. En conclusión, los profesores corresponden a uno de los grupos donde se presenta una alta prevalencia de trastornos de voz. Sin embargo, esto contrasta con la baja preocupación y el desconocimiento respecto al abordaje de este tipo de problemas.
Yếu tố nguy cơ của vỡ thai ngoài tử cung tại thời điểm nhập viện
Authors: Phạm Ngọc Ánh , Nguyễn Hồng Hoa
Published: May 2023

Đặt vấn đề: Với các tiến bộ trong kỹ thuật siêu âm và xét nghiệm β-hCG huyết thanh thai ngoài tử cung đã được phát hiện từ thời điểm sớm, nhưng số lượng bệnh nhân nhập viện trong tình trạng cấp cứu do thai ngoài tử cung vỡ vẫn còn cao. Việc xác định yếu tố liên quan tới bệnh nhân nhập viện trong tình trạng thai ngoài tử cung vỡ sẽ giúp nhà lâm sàng phát hiện các đối tượng có nguy cơ cao, từ đó có kế hoạch trong theo dõi và quản lý những bệnh nhân này. Hướng tới giảm tỷ lệ bệnh suất và tỷ suất tử vong gây ra do vỡ thai ngoài tử cung.

Mục tiêu: Xác định các yếu tố liên quan đến thai ngoài tử cung vỡ và giá trị tiên lượng của thang điểm NRS đo mức độ đau bụng trong tiên lượng thai ngoài tử cung vỡ.

Phương pháp: Nghiên cứu bệnh chứng theo tỷ lệ 1:2 thực hiện trên những bệnh nhân thai ngoài tử cung nhập khoa Cấp cứu, Bệnh viện Từ Dũ từ 01/2021 đến 06/2021.

Kết quả: Các yếu tố có liên quan tới nguy cơ thai ngoài tử cung vỡ khi nhập viện bao gồm: Khám vì trễ kinh (aOR = 0,41; p = 0,002; KTC 95%: 0,08 - 0,34); kích thước khối thai trên siêu âm (OR = 1,03; p < 0,001; 95% CI: 1,01 - 1,04) đau bụng mức độ nhẹ (1- 4 điểm) (aOR= 0,30; p = 0,009; 95% CI: 0,12 - 0,74); đau bụng mức độ nhiều (8 - 10 điểm) (aOR= 20,07; p < 0,001; 95% CI: 7,38 - 54,54). Giá trị tiên lượng thai ngoài tử cung vỡ qua đánh giá mức độ đau bụng bằng thang đo NRS có độ nhạy 69,90% và độ đặc hiệu là 85,44% tại điểm cut off 7 điểm.

Kết luận: Kích thước khối thai, cường độ đau bụng và khám vì trễ kinh là các yếu tố liên quan tới thai ngoài tử cung vỡ khi nhập viện. Cường độ đau bụng tính theo thang điểm NRS có giá trị tiên đoán khá tốt khả năng vỡ thai ngoài tử cung.
Penerapan Metode Multi-Objective Optimization on the Basis of Ratio Analysis (MOORA) dalam Seleksi Penerimaan Peserta Kegiatan Program Pendidikan Kecakapan Wirausaha
Authors: Fazlur Rahman  , Abdi Harfani  , Mesran  , Kelik Sussolaikah  , Nelly Khairani Daulay  , Ronal Watrianthos
Published: May 2023

The Entrepreneurial Skills Education Program (PKW), is one of the programs from the Ministry of Education and Culture in 2019. PKW is an educational service through courses and training to provide knowledge, skills, and foster an entrepreneurial mental attitude in managing self-potential and the environment as a basis for entrepreneurship. This study aims to select the acceptance of participants in the Entrepreneurial Skills Education (PKW) program. The method used in the selection is by applying the MOORA method. The MOORA method is a method with very simple steps. The results showed that A1 is the best compared to several other alternatives with a value of 0.304
Penerapan Teknik Neural Network dalam memprediksi Perkembangan Impor Kelompok Industri Tekstil dengan Metode Backpropagation
Authors: Ranjani  , Suci Cahya Mita  , Agus Perdana Windarto
Published: May 2023

The aim of this research is to analyze the development of the textile industry group in Indonesia using Artificial Intelligence. The analysis is conducted through a predictive model that will be used to predict the import development of the textile industry group. The dataset is sourced from the Indonesian Central Bureau of Statistics through the website https://www.bps.go.id/. The technique used is neural network with backpropagation method, and the analysis is conducted using Matlab. Backpropagation is a training method that has a target to be sought. This method is also a multilayer method, which has input, hidden, and output layers. The research process consists of two stages, namely the training stage and the testing stage. Out of several architecture models tested (3-10-1, 3-25-1, 3-50-1, 3-80-1, and 3-100-1), the best architecture model obtained is 3-100-1 with an MSE of 0.000999996 and an accuracy value of 100 percent.
The role of extrapulmonary personalized factors in asthma control
Authors: Tribuntceva L. V. , Budnevsky A. V. , Prozorova G. G. , Choporov O. N. , Kozhevnikova S. A. , Olysheva I. A.
Published: May 2023

Aim. To study in real clinical practice extrapulmonary personalized factors in patients with asthma depending on the presence or absence of obesity and to build a model of asthma control based on them.   Materials and methods. Cross-sectional study was performed in 7 outpatient centers and included 237 adult patients with bronchial asthma (mean age 52.6 ± 1.3 years). The patients were divided in groups according to body mass index (BMI): without obesity (BMI < 30 kg/m2) – 128 patients, with obesity (BMI ≥ 30 kg/m2) – 109 patients. Asthma control was assessed by Asthma Control Questionnaire-5, physical activity – by the motor activity questionnaire (ODA23+), physical activity motivation – by data from the questionnaire. A linear regression model was built with the inclusion of sex, smoking, BMI, physical activity to predict the level of asthma control. Elasticity coefficient Ej, β- and Δ-coefficients and their ranks were calculated.   Results. The distribution of patients according to the degree of asthma control differed statistically significantly in the groups: controlled, partially controlled and uncontrolled were 25.8 %, 60.2 %, 14 % and 0 %, 33.9 %, 66.1 %, respectively, in groups without obesity and obese (p < 0.001). High or moderate physical activity was present in 88 % of non-obese and 47% of obese patients (p < 0.05). No differences were found in the motivation for physical activity: 41% with obesity and 42 % without obesity belonged to the category of “thinking about or trying to exercise”. In the regression model, the ranks were distributed as follows (the sum of the ranks of the coefficients Ej, β, and Δ is calculated) rank 1 – BMI (0.8857, 0.4163, 0.5429), rank 2 – level of physical activity (0.6489, 0.3497, 0.4467), rank 3 – smoking status (0.0339, 0.1333, 0.0047). The coefficient of the model was not significant for sex.   Conclusion. Obesity and low physical activity are the main personalized extrapulmonary factors that affect control of asthma. A significant part of the patients are motivated to modify their level of physical activity.
Segmentation of renal structures based on contrast computed tomography scans using a convolutional neural network
Authors: Chernenkiy I. М. , Chernenkiy M. M. , Fiev D. N. , Sirota E. S.
Published: May 2023

Aim. Develop a neural network to build 3D models of kidney neoplasms and adjacent structures.   Materials and methods. DICOM data (Digital Imaging and Communications in Medicine standard) from 41 patients with kidney neoplasms were used. Data included all phases of contrast-enhanced multispiral computed tomography. We split the data: 32 observations for the training set and 9 – for the validation set. At the labeling stage, the arterial, venous, and excretory phases were taken, affine registration was performed to jointly match the location of the kidneys, and noise was removed using a median filter and a non-local means filter. Then the masks of arteries, veins, ureters, kidney parenchyma and kidney neoplasms were marked. The model was the SegResNet architecture. To assess the quality of segmentation, the Dice score was compared with the AHNet, DynUNet models and with three variants of the nnU-Net (lowres, fullres, cascade) model.   Results. On the validation subset, the values of the Dice score of the SegResNet architecture were: 0.89 for the normal parenchyma of the kidney, 0.58 for the kidney neoplasms, 0.86 for arteries, 0.80 for veins, 0.80 for ureters. The mean values of the Dice score for SegResNet, AHNet and DynUNet were 0.79; 0.67; and 0.75, respectively. When compared with the nnU-Net model, the Dice score was greater for the kidney parenchyma in SegResNet – 0.89 compared to three model variants: lowres – 0.69, fullres – 0.70, cascade – 0.69. At the same time, for the neoplasms of the parenchyma of the kidney, the Dice score was comparable: for SegResNet – 0.58, for nnU-Net fullres – 0.59; lowres and cascade had lower Dice score of 0.37 and 0.45, respectively.   Conclusion. The resulting SegResNet neural network finds vessels and parenchyma well. Kidney neoplasms are more difficult to determine, possibly due to their small size and the presence of false alarms in the network. It is planned to increase the sample size to 300 observations and use post-processing operations to improve the model.
Margem Equatorial brasileira: desafios postos sobre a mesa
Authors: Aquino Pires do Rio Gisela
Published: May 2023

Considerando as incertezas no cenário internacional sobre dificuldades de rotas tecnológicas alternativas ao uso de combustíveis fósseis, aos preços relativos da produção de energias verdes, à pressão sobre uso da terra, etc., este artigo assume a transição energética como processo geográfico que envolve mudanças de natureza econômica, social, técnica e ambiental e a produção de novas territorialidades. A noção de transição energética é empregada como grade analítica para descrever transformações na matriz energética. Como processo geográfico, tais mudanças podem ser analisadas em diferentes escalas. Este artigo discute os caminhos de uma transição energética e para a sustentabilidade, mobilizando as noções de fronteira energética e hub energético. A Margem Equatorial brasileira, base empírica da discussão, exemplifica a emergência de novas territorialidades e como as transições são dependentes de arranjos institucionais, portanto, relacionadas à gestão do território.
The Relationship of the Principal Transformational Leadership, Organization Culture, and Work Motivation with the Performance of State High School Teachers in Banjarbaru
Authors:   Master of Education Administration, Lambung Mangkurat University Banjarmasin, Indonesia, Arifin Rhony , Hadi Sutarto ,   Master of Education Administration, Lambung Mangkurat University Banjarmasin, Indonesia, Aslamiah Aslamiah ,   Master of Education Administration, Lambung Mangkurat University Banjarmasin, Indonesia
Published: May 2023

This study aims to describe the principal's transformational leadership behavior, organizational culture, work motivation, and teacher performance; and analyze the direct and indirect relationship between the principal's transformational leadership, organizational culture, and work motivation with the performance of public high school teachers in Banjarbaru City. This study used descriptive-quantitative research method. The sample size of this study was 153 teachers. Data collection instruments in the form of questionnaires that have met the requirements of validity and reality tests. Data analysis to test the relationship in this study used path analysis. Based on the results of this study, it was found that there is a direct relationship between: (1) principal transformational leadership and teacher performance, (2) principal transformational leadership and work motivation, (3) organizational culture and teacher performance, (4) organizational culture and work motivation, (5) work motivation and teacher performance; and the indirect relationship between (6) principal transformational leadership and teacher performance through work motivation, (7) organizational culture and teacher performance through work motivation.
Teachers' Continuous Professional Development Special Education (Multi-Case Study at SLBN 1 Amuntai and SLBN Kandangan)
Authors:   Master of Education Administration Program, Lambung Mangkurat University, Banjarmasin 70123, Indonesia, Akhyar M. , Suriansyah Ahmad ,   Master of Education Administration Program, Lambung Mangkurat University, Banjarmasin 70123, Indonesia, Ngadimun Ngadimun ,   Master of Education Administration Program, Lambung Mangkurat University, Banjarmasin 70123, Indonesia
Published: May 2023

This study aims to describe the model of continuous professional development of special education teachers, strategies for implementing the model of continuous professional development programs and the implications of professional development of special education teachers on the quality of learning. The approach used in this study is a qualitative approach with a multi-case study design and data collection techniques through interviews, observation and documentation. The samples in this study used purposive sampling and then continued snowball sampling. The collected data will be examined and data condensation, data presentation, and conclusion drawing and verification will be carried out. Checking the validity of data is carried out using observational diligence and triangulation. Once checked, the collected data is analyzed with single-case analysis and cross-site analysis. The results obtained from this study show the professional development of special education teachers in SLBN 1 Amuntai and SLBN Kandangan through 3 main programs, namely certification programs, supervision programs and PKB. While the professional development strategy model implemented consists of planning, implementing and evaluating the strategiescarried out at SLBN 1 Amuntai, namely increasing literacy activities, seminars/workshops/training, cultivating religious behaviour, comparative studies, and generating work motivation. Meanwhile, at SLBN Kandangan through study assignments/study permits, seminars/workshops/training, religious enthusiasm, comparative studies, consulting services, and generating work motivation through rewarding. The implications of the professional development of special education teachers are very influential on the quality of learning quality. Based on the findings, it is recommended that principals and teachers pay more attention to the importance of developing professionalism, and further researchers are expected to conduct research and More in-depth, critical and objective studies in analyzing problems related to teacher professionalism.
The Effect of Principal Managerial Competency, School Principal Leadership Style, and Teacher Work Motivation on Teacher Performance in SDN Jekan Raya District, Palangka Raya
Authors:   Master of Education Administration, Lambung Mangkurat University Banjarmasin, Indonesia, Marselina Merry , Effendi Rustam ,   Master of Education Administration, Lambung Mangkurat University Banjarmasin, Indonesia, Metroyadi Metroyadi ,   Master of Education Administration, Lambung Mangkurat University Banjarmasin, Indonesia
Published: May 2023

This study aims to determine and analyze the influence of the principal managerial competence, principal leadership style and teachers’ work motivation on teacher performance. This research is quantitative research with a path analysis approach. The study population was 440 with 200 studyampelous. Data collection was carried out using instruments consisting of managerial competence (11 items), principal leadership style (30 items), teacher work motivation (44 items), teacher performance (40 items) that had been tested for validity and reliability. The data analysis of this study used jalur analysis (Path Analysis). The results found that there was an influence of managerial competence on teacher work motivation (0.097), principal leadership style on work motivation(0.075), principal managerial competence on teacher performance (0.341),Principal leadership style towards performance (0.345), teacher work motivation towards performance (0.320), principal managerial competence towards teacher performance through teacher work motivation (0.420), principal leadership towards teacher performance through teacher work motivation (0.387).
Estado nutricional, tempo de internação e mortalidade em pacientes submetidos à cirurgia cardíaca em um hospital na cidade de Maceió
Authors: Almeida Nykholle Bezerra , Oliveira Sarah Bezerra , Pereira Cynthia Paes , Bandeira Ismar , De Souza Silvya Albuquerque
Published: May 2023

Objetivo: avaliar a relação entre o estado nutricional, tempo de internação e mortalidade em pacientes submetidos à cirurgia cardíaca. Métodos: Estudo transversal retrospectivo, realizada no Hospital Santa Casa de Misericórdia de Maceió. A amostra foi constituída por pacientes adultos e idosos, de ambos os sexos, submetidos a cirurgias cardíacas. Os dados foram provenientes do prontuário eletrônico dos pacientes referentes à idade, estado nutricional, tempo de internação e mortalidade. Resultados: Foram analisados os dados de 220 pacientes, dos quais, 55,5% eram do sexo masculino e a média de idade foi 55,3 anos. A prevalência de mortalidade foi 7,8%. Cerca de 40% dos indivíduos eram eutróficos e o tempo médio de internação foi de 14,1 dias. Não houve associação entre estado nutricional, tempo de internamento e mortalidade. Conclusão: Constatou-se baixa frequência de desnutrição, e não houve relação com o prolongamento da permanência hospitalar e com a mortalidade dos pacientes. No entanto, o diagnóstico nutricional precoce no internamento hospitalar e o acompanhamento, além da implantação de uma dietoterapia adequada são de extrema importância para evitar declínio nutricional e possíveis complicações durante o tempo de estadia no ambiente hospitalar.
Palavras-chave: Estado Nutricional. Mortalidade. Cirurgia cardíaca.
Transferência intrafolicular de oócitos imaturos (TIFOI) e taxa de recuperação embrionária em vacas zebuínas
Authors:   , Vieira Adriana Filó de Almeida
Published: May 2023

Este trabalho teve por objetivo executar a técnica da Transferência Intrafolicular de Oócitos Imaturos, utilizando protocolo de indução de estro com duas doses de prostaglandina, e avaliar sua eficiência na sincronização do estro, ovulação e na produção de embriões. A transferência intrafolicular de oócitos, imaturos (TIFOI) pode ser uma alternativa para obtenção de embriões bovinos, após a superestimulação ovariana (SOV) e a produção in vitro de embriões (PIVE). No presente estudo, cinco vacas zebuínas foram utilizadas como doadoras e/ou como ovuladoras. Foram feitas um total de 6 seções completas de Transferência Intrafolicular de Oócitos Imaturos- TIFOI de 17 dias (desde o início da sincronização de estro até o lavado de embrião) com protocolo hormonal feito nas vacas ovuladoras de 09 dias com duas aplicações de prostaglandina, sendo 4 seções utilizando oócitos aspirados das doadoras e 2 seções utilizando oócitos de abatedouro. Na 1ª Seção utilizando oócitos aspirados de 3 doadoras, somente uma, de duas vacas ovuladoras produziu 4 embriões (2 Blastocistos e 2 embriões degenerados), de 15 oócitos injetados (26 %). Na 3ª Seção utilizando oócitos aspirados de duas doadoras, foram injetados 12 oócitos em uma ovuladora, produzindo 1 embrião degenerado (de 2 células; 8,33 %). Na 5ª Seção utilizando oócitos de abatedouro, somente uma das cinco vacas ovuladoras, produziu 1 embrião degenerado (mórula) de 18 oócitos injetados (5,5 %). Na 6ª Seção utilizando oócitos de abatedouro, somente uma das cinco vacas ovuladoras produziu 1 embrião degenerado (4 células) de 38 oócitos injetados (2,6 %). Na 2ª e 4ª Seção não houve recuperação embrionária. O protocolo utilizado para a sincronização do estro na transferência intrafolicular de oócitos imaturos se mostrou eficiente (72,2%) na formação de um único folículo dominante e ovulação com formação de corpo lúteo. Houve a produção de embriões por meio da TIFOI, embora com baixa taxa de recuperação embrionária. Portanto há necessidade de novos estudos no intuito de identificar os fatores limitantes desta biotécnica, que pode se tornar uma alternativa para produção de embriões com baixo custo.Palavras-chave: Folículo. Produção de embrião in vivo. Injeção intrafolicular de oócitos.
In-Vivo Antimicrobial Activities of Calotropis Procera (Linn) Using Experimental Animals
Authors:   School of Chemistry and Bioscience University of Bradford, United Kingdom, OS Asoso , AO Ogundare ,   Department of Microbiology, Federal University of Technology, Akure, Nigeria
Published: May 2023

Indigenous medicine comprises of knowledge systems that developed over subsequent years within different societies before the period of modern medicine. This work investigated on the in-vivo antimicrobial activities of the extracts (solvent used in this study are acetone, ethanol, aqueous and methanol) of stem and leaf of Calotropis procera using experimental animal (albino rats), whereby haematological and biochemical analyses were determined using standard methods. Based on the result in this study, there was no death recorded but there was a mild toxicity effects on the liver, kidney, stomach and heart of the animals at 1000-3000 mg/kg of the rats in this research.
The Lamentation Poetry and its Significance in the Ṣadr al-Islām Period
Authors: AYYILDIZ Esat
Published: May 2023

This study aims to analyze rithā’ poetry, which holds a significant place in the literary production of the Ṣadr al-Islām (early Islamic) period. To this end, literary works of the period, especially poems, will be carefully scrutinized, while tracing the development process of rithā’ poems, identifying the themes and topics covered, and exploring the prominent poets of the genre. Additionally, the historical and social context of the period, which played a pivotal role in the emergence and evolution of rithā’ poems, will be taken into account. Therefore, sources that shed light on the political, social, and cultural structures of the period will also be examined. The study will also investigate different perspectives and interpretations of rithā’ poems and conduct an extensive analysis of the literary understanding and values of the period. The outcomes of this study will demonstrate that rithā’ poetry not only embodies a literary genre but also serves as a mirror reflecting the social, cultural, and aesthetic values of the Ṣadr al-Islām period. This research, characterized by its circumscribed purview, which solely emphasizes the examination of poetic compositions from the Ṣadru’l-Islām era, sets itself apart from extant scholarly inquiries on the topic, thereby enriching the academic discourse.
IMPACT OF PETROLEUM PRODUCTS PRICE CHANGES ON PRICES OF FOOD ITEMS IN THE NIGERIAN ECONOMY
Authors: N. Kyarem Richard , Dodo Felix Emmanuel
Published: May 2023

There seems to be disequilibrium between food items and petroleum price changes in Nigeria. Every petroleum price change is followed by a rise in the prices of food items and increased poverty. This study therefore examines the impact of petroleum product price changes on the prices of food items in the Nigerian economy. Annual time series data from 1991 to 2021 are employed and the study adopt ARDL approach to determine the long-run and short-run relationship between the price of premium motor spirits and the price of food items in Nigeria. However, as it is reported by the unit root test there is a mixture of 1(0) and 1(1) order of cointegration. With these results, it is more suitable to apply the ARDL approach. The results show that the price of premium motor spirit has a positive and significant impact on food items during the short run but in the long run, the prices of premium motor spirits have a positive and insignificant impact on the food items in Nigeria. The results of the Toda and Yamamoto (1995) causality tests show that there is a unidirectional causality running from the price of food items to the price of premium motor spirit and from the exchange rate to the price of food items. Therefore, the government should implement policies that encourage agricultural productivity which has great potential of boosting food supply so as to reduce the price of food items across the country. This way, timely increases in petroleum prices would generate more revenue without inflationary trends in food items.
Tren Manajemen Pendidikan: Analisis Bibliometrik Menggunakan Aplikasi Vosviewer
Authors: Iriyani Sri Astuti , Patty Elyakim N.S , Rahim Abdul , Awaliyah Mia , Ria Reny Refitaningsih Peby
Published: May 2023

Ruang lingkup manajemen pendidikan hingga saat ini masih menjadi salah satu topik yang penting untuk dikaji, dengan keberagaman kajian yang ada diperlukan data penelitian manajemen pendidikan yang belum banyak dikaji sehingga dapat menjadi referensi dalam menentukan penelitian selanjutnya.Tujuan dari penelitian ini adalah untuk mengeksplorasi tren penelitian manajemen pendidikan selama 10 tahun terakhir. Metode yang digunakan untuk mengeksplorasi tren penelitian adalah kajian literatur melalui analisis bibliometrik. Hasil analisis bibliometrik mengidentifikasi peneitian inti atau penulis, serta hubungannya, dengan mencakup semua publikasi yang terkait atau bidang tertentu. Publikasi terkait manajemen pendidikan dari tahun 2013-2023 diambil dari jurnal internasional yang terindeks Google Scholar. Tren penelitian manajemen pendidikan divisualisasikan menggunakan program Vosviewer. Hasil penelitian menunjukkan bahwa tren penelitian manajemen pendidikan mengalami penurunan selama 10 tahun terakhir, hanya saja mengalami kenaikan pada tahun 2020. Terdapat 20 kluster Klaster 1 (23 item), Kluster 2 (23 item), Kluster 3 (20 item), Kluster 4 (18 item), Kluster 5 (18 item), Kluster 6 (18 item), Kluster 7 (16 item), Kluster 8 (15 item), Kluster 9 (15 item), Kluster 10 (15 item), Kluster 11 (13 item), Kluster 12 (13 item), Kluster 13 (12 item), Kluster 14 (12 item), Kluster 15 (12 item), Kluster 16 (11 item), Kluster 17 (11 item), Kluster 18 (8 item), Kluster 19 (6 item), Kluster 20 (4 item).
Analisis Wacana Kritis Model Van Dijk pada Berita Online Pencucian Uang Pejabat
Authors: Indriyawati Lilyn , Hudiyono Yusak
Published: May 2023

Permasalahan yang akan dikaji dalam penelitian ini bagaimana wacana dikembangkan dalam berita online bertema Money Laundry atau Pencucian Uang Pejabat. Penelitian ini bertujuan untuk menguraikan struktur teks (struktur makro dan struktur mikro, kognisi sosial, dan konteks sosial pada wacana berita online). Metode yang digunakan adalah deskriptif kualitatif dengan analisis wacana kritis model Van Dijk dengan teknik pengumpulan data baca dan tulis. Dua strategi yang dilakukan saat menganalisis data kajian yaitu mengidentifikasi, mengklarifikasi, dan menginterpretasi data. Peneliti menganalisis dua wacana berita  yang sedang tranding, kasus Gazalba Saleh dan Rafael Alun.

Berdasarkan hasil temuan dari penelitian ini diketahui bahwa kedua teks tersebut menggambarkan keterlibatan beberapa elemen wacana, yakni aspek semantik, aspek sintaksis, dan stilistika leksikon. Sehingga penjabaran kajian analisis wacana kritis pertama dan kedua dilihat dari ketiga struktur wacana model Van Dijk beserta elemennya berkenaan dengan teks kasus Gazalba Saleh dan Rafael Alun tema tersebut digambarkan untuk situasi dan survei terkait penyalahgunaan jabatan dan pencucian uang. Namun dari keseluran wacana yang dianalisis secara kritis pada kedua teks berita online tersebut maka dialek pada berita itu berhubungan dengan kognisi sosial digunakan untuk mempengaruhi dan menekankan hal-hal penyalahgunaan jabatan dan pencucian uang pada masyarakat
REANATOMIZAÇÃO DE INCISIVOS LATERAIS CONÓIDES E FECHAMENTO DE DIASTEMA: RELATO DE CASO
Authors: Trindade Moreira Talita , Lima Viana Eduarda , Correia Pereira Lara , Argolo Souza Amaral Polyana
Published: May 2023

O objetivo foi relatar um caso clínico de reanatomização de incisivos laterais superiores conóides e diastema de interincisivos centrais superiores. Para a realização deste caso, optou-se por um tratamento minimamente invasivo através da técnica restauradora direta com auxílio do enceramento diagnóstico prévio. Paciente do sexo feminino, 18 anos de idade, compareceu ao Núcleo de Estudos em Odontologia de uma faculdade particular do interior da Bahia, queixando-se de insatisfação com o seu sorriso, pois os dentes 12 e 22 apresentavam-se conóides e diastema entre os elementos 11 e 21. Por intermédio do enceramento diagnóstico prévio dos dentes afetados, foi realizado o mock-up com auxílio de muralhas/guias e silicone de adição, com posterior restaurações provisórias com resina bisacrílica para a aprovação da paciente. Como tratamento definitivo, foi confeccionado restaurações em resina composta direta. A presença de incisivos laterais superiores conóides é relativamente alta na população em geral, podendo afetar a autoestima e a qualidade de vida dos pacientes. O enceramento diagnóstico e o mock-up tiveram papel fundamental no protocolo do caso clínico.
Smoking prevalence, knowledge and attitudes among medical students in Dhaka, Bangladesh
Authors: Karim Mohoshina , Farah Shayela , Parash Tanveer Hossain
Published: May 2023

Cigarette smoking is considered as the symbol of adulthood and as a friend during stress and loneliness. The developing countries in South Asia where the largest segment of the population is comprised of adolescents are more susceptible to smoking epidemic and its consequences. A cross sectional survey among 304 randomly selected medical students was carried out to determine their smoking habit of a selected medical college in Dhaka, from 1st October to 31st December 2014. The respondents were from 16 to 20 years of age, with mean (Â±SD) of 16.8 (Â±1.9) years. Among them (including 28 girl students), 96(31.5%) were non-smokers. The remaining 208(68.4%) were smokers, among them 43(20.6%) were regular smokers, and 165(79.3%) were occasional smokers. All 28 female students were non-smokers. Regarding duration of smoking, 42(20.2%) respondents smoked for less than 6 months, 64(30.8%) for 6 months to 1 year, 88(42.3%) for 1 to 4 years, 11(5.3%) for 5 to 10 years and a least 3(1.4%) smoked for more than 10 years. Thirty six percent of current smokers smoked more than 10 sticks per day compared with thirty percent who smoked 6 to 10 a day. Significantly more users knew that it causes tuberculosis, heart attack, cancer and development of hypertension. Overall, studentsâ€™ major sources of information were doctors (69.7%), medias (47.7%), parents (9.2%) and friends (3.3%). As the prevalence of smoking among medical students was found very high hence, the multi-pronged intervention strategy is needed to tackle the problem. Anti-tobacco education and awareness should be adopted in the curriculum of schools and colleges. All forms of tobacco advertising and promotional activities should be banned, and parents should be encouraged to adopt more responsible attitudes toward smoking in the home