bluuebunny/crossref_metadata_2025_split huggingface dataset:
AN APPRAISAL OF PSYCHOTROPIC DRUGS AND THEIR CONSEQUENCES AMONG THE CONSTRUCTION INDUSTRY WORKERS IN NIGERIA, ADAMAWA STATE CASE STUDY
Authors: Oraegbune OM , Adole AM , Adeyemo VO 
Published: June 2021

This paper appraises the psychotropic drugs and its consequences, reactions on construction workers, responses to a given performance, which can be behavioral, perceptional, physiological, emotional and cognitive. This study was basically an appraisal of psychotropic drugs on construction workers, identification of types and effects. Structural questionnaires and oral interviews were used to collect data among construction workers. A simple statistical technique was used for the data analysis. The outcome of the study shows that majority (85%) of the population depend on drugs to achieve greater efficiency, acquire long lasting energy and alertness. The study further discovers the negative implications in terms of health risk and low productivity (i.e. caffeine(93%),create anxiety, disorder and sleep disruptions, Nicotines (73%) tobaccolosis, tramadol (85%) pelptic ulcer, marijuana(93%) mental sickness, codeine (73%)hyperactivity, Alcohol(51%)diabetes and hypertension), while poor or low quality job done is a sign of drug abuse intake by the workers. Others such as disobedient, quarrelling and abnormal behaviors are also sighs of drug abuse by the workers. This paper therefore, concludes that the use of psychotropic drugs by construction workers is real and is assuming an alarming rate in the industry. This study recommends collaborative effort between the construction firms and the drug regulatory agencies like National Drugs Law Enforcement Agency (NDLEA).Construction workers should undergo drug test process before given an employment, while seminars should be organized at least every quarter of the year on drug abuse or drug related issues or where special assistances in terms of professional advise and health intervention are given. http://dx.doi.org/10.4314/njt.v36i1.29
THE PROSPECTS, IMPACTS, AND RESEARCH CHALLENGES OF ENHANCED CELLULOSIC ETHANOL PRODUCTION: A REVIEW
Authors: Ezeoha SL , Anyanwu CN , Nwakaire JN 
Published: June 2021

The benefits and impacts of enhanced cellulosic ethanol (CE) production, the major features of existing production processes, and some current research challenges of major pretreatment processes are presented. The prospects of enhanced CE production, especially in developing economies like Nigeria are highlighted. We conclude that in order to reap the promising prospects and conquer the challenges and negative impacts of enhanced CE production, current researches for production of cellulosic ethanol must be focused on the development of processes that are capable of liberating and fermenting lignocellulose into bioethanol at faster rates, higher yields, and overall technical and economic efficiency. These researches should concentrate on the development of cheaper enzymes, genetically engineered microorganisms, and cost-effective thermochemical processes in order to accomplish the much-needed breakthrough in cellulosic biofuel production. Properly targeted innovative researches on cellulosic ethanol production processes are the sure route to effective reduction of global dependence on nonrenewable fossil fuels. The needed research breakthroughs will obviously be based on innovative integration of processes rather than on the improvement of the well-known individual processes of bioethanol production. http://dx.doi.org/10.4314/njt.v36i1.32
PERFORMANCE EVALUATION OF A COMPOSITE-PADDED EVAPORATIVE COOLING STORAGE BIN
Authors: Ogbuagu NJ , Green IA , Anyanwu CN , Ume JI 
Published: June 2021

In tropical regions, postharvest losses of fruits and vegetables induced by high temperatures is a major challenge to agriculture, especially in places with poor or no electric power supply. The present study is on the comparative performance evaluation of a 92kg capacity storage bin for the preservation of fruits and vegetables, operating on the principle of evaporative cooling. A 24V DC, 0.37kW fan attached to the back of the cooler serves to blow in cooling air. The average temperature drop and saturation efficiency in the evaporative cooler during the no-load test were 5°C and 42%, respectively. The facility was able to sustain tomatoes, garden eggs and carrots stored in it for ten days. The weight losses at ambient temperature were found to be 70%, 30%and 45% for tomatoes, garden eggs and carrots, respectively; while those stored at cooler temperature were10%, 25%, and 40% for tomatoes, garden eggs and carrots respectively. The evaporative cooler performed best for storage of tomatoes. http://dx.doi.org/10.4314/njt.v36i1.37
PROPERTIES OF CEMENT PASTE AND CONCRETE CONTAINING CALCIUM CARBIDE WASTE AS ADDITIVE
Authors: Ogork EN , Ibrahim TS 
Published: June 2021

This paper assessed the effect of calcium carbide waste (CCW) as additive on the properties of cement paste and concrete. The CCW used was sourced from a local panel beating workshop. It was sundried and sieved through a 75 µm sieve and characterized by X-Ray Fluorescence (XRF) analytical method. The consistency, setting times and drying linear shrinkage of cement paste with CCW addition of 0, 0.25, 0.5, 0.75 and 1.0 %, respectively by weight of cement were investigated in accordance with standard procedures. The slump values of fresh concrete containing CCW as additive and of 1:2:4 mix ratio and water-cement ratio of 0.5 was determined. A total of sixty numbers of 150 mm cubes of hardened concrete were tested for compressive strength at 1, 3, 7, 28 and 56 days of curing in accordance with standard procedures. The concrete compressive strength was also modeled using Minitab statistical software based on linear regression technique. The results of the investigations showed that CCW was predominantly of calcium oxide (95.69 %) and a combined SiO2, Al2O3 and Fe2O3 content of 3.14 %. The addition of CCW in cement decreased drying shrinkage (100 %), initial setting time (78 %) and final setting time (57 %), but increased consistency (14 %) at 1.0 % CCW content. The addition of CCW in concrete also showed slight increase in slump (6.5 %) and increase in compressive strength with increase in CCW additive up to 0.5 % and decrease in compressive strength with further increase in CCW content. The 28 days compressive strength of concrete with 0.5 % CCW content was 6.4 % more than normal, while that of concrete with 1.0 % CCW content was 14.9 % less than normal. The compressive strength model of CCW-concrete was developed with R2 value of 0.830 and could be used to predict concrete compressive strength. http://dx.doi.org/10.4314/njt.v36i1.4
GEOPHYSICAL AND WELL CORELLATION ANALYSIS OF OGO FIELD: A CASE STUDY IN NIGER DELTA BASIN OF NIGERIA
Authors: Ehigiator MO , Chigbata NC 
Published: June 2021

A suite of geophysical wire line logs were run in hole. The wells data were acquired from bottom to top and not top to bottom. Basically, we have the qualitative and the quantitative evaluation techniques.Qualitative means is usually used for identification of the type of lithology and also for the component of the formation. Quantitative is used to estimate numerically, the value of what is in the formation. The logs used for evaluation were: Spontaneous potential logs and the Gamma ray logs. These were used to determine the lithology of the formation. Resistivity logs were run in hole to also determine the water saturation in the formation. The Formation Density and the compensated Neutron logs were run in hole to differentiate the gaseous zone from the oil zone in the Hydrocarbon Formation Ogo1, Ogo2 and Ogo3 from well correlation depicts that the subsurface stratigraphy is that of sand â€“ shale intercalations.Â Two prominent hydrocarbon bearing reservoirs (R1and R2), at Depth 1563m and 1642mm respectively were identified. The reservoirs were found to have average porosity of 0.22, water saturation 0.43 and Hydrocarbon saturation of 0.57. The reservoirs have permeability of 1376m, volume of oil in place for reservoir 1 and 2 is 39900m3Â and 9647 m3Â Â respectively. More. Well correlations are recommended for proper drilling and well completions. 4D seismic acquisitions should be encouraged for proper view of the formation.Â http://dx.doi.org/10.4314/njt.v36i3.10
ASSESSMENT OF TRAFFIC FLOW ON ENUGU HIGHWAYS USING SPEED DENSITY REGRESSION COEFFICIENT
Authors: Ugwuanyi HK , Okafor FO , Ezeokonkwo JC 
Published: June 2021

In an attempt to estimate the operating speeds and volume of traffic on highway lanes as a function of predicted demands, speed-density models were estimated using data from highway sites. Speed, flow and volume are the most important elements of the traffic flow. In this study, the speed-density regression models are compared using five highways in relation to their correlation coefficient based on the daily traffic flow data obtained from the roads. The traffic flow data were collected by hourly traffic count on each road. The coefficient of correlation (R) proved to have the best fit with a higher confidence and less variation for a two-lane highway than a one-lane highway. The space-mean speed (u) and density (k) relationship for the two-lane highways are; u, Â and uÂ whereas the space-mean speed (u) and density (k) relationship for the one-lane highways are; u = Â respectively. This research provides practical application for speed estimation, construction, maintenance and optimization of the highways using the speed-density models which will enhance traffic monitoring, traffic control management, traffic forecasting and model calibration.Â http://dx.doi.org/10.4314/njt.v36i3.13
EVALUATION AND CHARACTERIZATION OF GAKEM AND ABOUCHICHE CLAY SAMPLES IN BEKWARRA LGA OF CROSS RIVER STATE FOR USE AS REFRACTORY MATERIALS
Authors: Ovat FA , Ewa DE , Egbe EA 
Published: June 2021

The characterization of some clay as refractory materials for furnace lining has become relevant to find solutions to the cost involved in the purchase and importation of these refractory materials. This work investigated the refractory properties of clay samples for their suitability for use in the industries. Clay samples were collected from Gakem and Abouchiche areas and analysed for physical and chemical properties to determine the suitability of the clays as refractory materials. The results showed cold crushing strength (21.46MN/m2), thermal shock resistance (27 cycles), bulk density (3.52g/cm3), linear shrinkage(3.80%), apparent porosity (28.84%) and permeability (80%) for Gakem; and cold cold crushing strength (18.40MN/m2), thermal shock resistance (25 cycles), bulk density(2.81g/cm3), linear shrinkage (3.70%), apparent porosity (25.86%) and permeability (77%) for Abouchiche respectively. The chemical compositions of these clay samples were also investigated. The results showed that the samples fall under Aluminosilicate type of clay because of their high values of Aluminium Oxide and Silicon Oxide. Tests showed that clay from these areas can be used to produce refractory materials that can withstand a furnace temperature of about 1600Â°C.Â http://dx.doi.org/10.4314/njt.v36i3.26
THE EFFECT OF CERAMIC WASTE AS COARSE AGGREGATE ON STRENGTH PROPERTIES OF CONCRETE
Authors: Ikponmwosa EE , Ehikhuenmen SO 
Published: June 2021

This paper reports the findings on an experimental investigation of the effect of partial replacement of coarse aggregate with ceramic waste on strength properties of concrete. Compressive strength tests were conducted using 150x150x150mm cube specimens, while tensile strength was investigated using 150x300mm cylinder specimens. Results of tests show that workability, density, compressive and flexural strength of concrete decreased with increase in ceramic waste content. The compressive strength at 90 days curing age for the control sample was 24.67 N/mm2. Compressive strength values at 90 days curing age forÂ 25%, 50% and 75% replacement levels were 21.78 N/mm2, 19.85 N/mm2and 17.85 N/mm2 respectively. The decrease in density and strength was due to ceramic waste being lighter and more porous than normal coarse aggregate. Tensile strength of concrete with ceramic waste decline gradually from 8.39 N/mm2 to 6.13 N/mm2 for the control and 75% replacement samples respectively. This could be attributed to the water absorption capacity and external porcelain nature of the waste material. A production cost savings of 10.7% for 1:2:4 concrete mix was noted at 75% replacement level. This study concludes that ceramic waste could be used for both structural and non-structural works and recommends that beyond 75% replacement level, ceramic waste material should not be used in concrete structures where strength is the major consideration.Â http://dx.doi.org/10.4314/njt.v36i3.5
PREDICTION OF FLEXURAL STRENGTH OF CHIKOKO POZZOLANA BLENDED CEMENT CONCRETE USING OSADEBEâ€™S REGRESSION FUNCTION
Authors: Onwuka DO , Sule S 
Published: June 2021

Chikoko mud is abundant in the mangrove swamps of the Niger Delta area of Nigeria. Its utilization in concrete production is traceable to its pozzolanic properties. In this paper, a regression model is developed to predict and optimize the flexural strength of chikoko pozzolana blended cement concrete using Osadebeâ€™s regression function. The results obtained from the derived regression model are very close to those obtained from experiment. The model was tested for adequacy using a Fisher test at 5% level of significance and was found to be adequate. A computer program coded in basic language was used to select the mix ratios that would optimize the flexural strength of chikoko pozzolana blended cement concrete. The computer program is user-friendly and can be used to select the mix ratios corresponding to a desired strength value with reasonable accuracy and without waste of time.Â http://dx.doi.org/10.4314/njt.v36i3.8
ANALYTICAL BENDING SOLUTION OF ALL CLAMPED ISOTROPIC RECTANGULAR PLATE ON WINKLERâ€™S FOUNDATION USING CHARACTERISTIC ORTHOGONAL POLYNOMIAL
Authors: Ogunjiofor EI , Nwoji CU 
Published: June 2021

The analytical bending solution of all clamped rectangular plate on Winkler foundation using characteristic orthogonal polynomials (COPs) was studied. This was achieved by partially integrating the governing differential equation of rectangular plate on elastic foundation four times with respect to its independents x and y axis. The foundation was assumed to be homogeneous, elastic and isotropic. The governing differential equation was non-dimensionalised to make it consistent. The deflection polynomials functions were formulated. Thereafter, the Galerkinâ€™s works method was applied to the governing differential equation of the plate on Winkler foundation to obtain the deflection coefficient, . Numerical example was presented at the end to compare the results obtained by this method and those from earlier studies. The percentage difference obtained for central deflection of all clamped rectangular plate loaded with UDL using the method and earlier research worksÂ for K = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 are: 0.000042, 0.000052, 0.000043, -0.000011, -0.000068, 0.000001, 0.000001, 0.000001, -0.000001, 0.000000, 0.000001. 0.000033, 0.000035, 0.000033, -0.000018, -0.000072, -0.000003, -0.000003, -0.000003, 0.000002, -0.000002, -0.000001. The result showed that an easy to use and understandable model was developed for determination of deflections of all clamped rectangular plates on Winklerâ€™s elastic foundation using principle of COPs.Â http://dx.doi.org/10.4314/njt.v36i3.9
PELATIHAN PENERAPAN TEKNIK FUN GAME PADA GURU GURU BAHASA INGGRIS PAUD KECAMATAN BENGKALIS
Authors: Erni Erni 
Published: June 2021

Pembelajaran Bahasa Ingris di Kecamatan Bengkalis, kabupaten Bengkalis Riau belum mencapai hasil yang diharapakan. Rendahnya kemampuan guru dalam memguasai materi ajar dan teknik mengajar berkontribusi terhadap rendahnya motivasi, kemampuan berbahasa Inggris siswa PAUD. Untuk itu dilakukan kegiatan pengabdian kepada masyarakat melalui pelatihan teknik Fun Game. Khalayak sasaran dalam kegiatan pengabdian kepada masyarakat ini adalah guru guru Bahasa Inggris PAUD di Kecamatan Bengkalis. Pemecahan masalah adalah dengan memberi pelatihan mengajar Bahasa Inggris dengan Teknik Fun Game. Kegiatan pelatihan dilakukan selama 8 minggu. Hasil pengabdian masyarakat menujukan bahwa pelatihan dengan teknik fun game meningkatkan kemampuan dan keterampilan guru Bahasa Inggris PAUD dalam mengajar Bahasa Inggris. Dengan menerapkan teknik Fun Game dalam proses belajar mengajar dapat meningkatkan hasil belajar Bahasa Inggris siswa TK se-kabupaten Bengkalis. Dengan teknik Fun Game terbukti peserta pelatihan antusias belajar dan senang dalam mempelajari bahasa inggris
Principios que rigen el uso progresivo de la fuerza y su aplicación en la Policía Nacional.
Authors: Benavides Salazar Cristian Fernando , Benavides Salazar Julio Cesar , Santillán Molina Alberto Leonel 
Published: June 2021

La investigación está orientada analizar de manera constructiva la Seguridad Ciudadana y como se ha ido desarrollando a través del tiempo, y a la vez cómo las entidades de seguridad comoPolicía Nacional aplican el uso progresivo de la fuerza para garantizar a sus ciudadanos el goce de sus derechos y mantener la paz. La seguridad constituye uno de los derechos más relevantes para un gobierno, pero hoy en día, el crecimiento de la delincuencia se ha convertido en la principal preocupación de los ciudadanos, pues ha sido un fenómeno que ha ido creciendo, más aún en la pandemia a causa del COVID 19, que ha sido detonante para el incremento de los índices de inseguridad a nivel nacional.
Análisis Jurídico del Derecho Mercantil: marco legal en México
Authors: Medina Wahnnatah Armando , Almada Quintero María Guadalupe , Gómez llanos Ángel Antonio Romero , Medina Almada Ana Lucia 
Published: June 2021

En el presente trabajo se analizan aspectos relevantes relacionados con el derecho mercantil, se realiza una revisión doctrinaria comparando opiniones y el análisis de diferentes autores y estudiosos de la materia, se toma como referente además el marco normativo, resaltando las principales leyes que regulan la actividad mercantil en México.
El análisis se enfoca, partiendo de diferentes conceptualizaciones del derecho mercantil, las fuentes de donde surge o emana y sus principios rectores que le dan sustento. Los elementos fundamentales, las personas o los sujetos que intervienen y se sitúan en la hipótesis normativa y su objeto principal. Se analiza además, las obligaciones mercantiles, sus principales elementos y la forma de extinguirse, resaltando la importancia que cobra el derecho mercantil en la actividad empresarial. Esta investigación se ubica en el campo de las ciencias sociales, se utiliza un enfoque con elementos cualitativos, un diseño exploratorio, se procede a la interpretación de la información recabada.
RESOLUCIÓN DE QUISTE PILONIDAL MEDIANTE TÉCNICA DE COLGAJO EN H. RESOLUTION OF THE PILONIDAL CYST USING THE FLAP TECHNIQUE IN H.
Authors: Escudero Sepúlveda Andrés Felipe , Abete Federico 
Published: June 2021

RESUMEN
Introducción: Objetivo: describir el rendimiento de la técnica de colgajo en H para el tratamiento del quiste pilonidal. Materiales y Métodos: se realizó un estudio observacional descriptivo prospectivo en pacientes sometidos a técnica de colgajo en H entre abril de 2017 y abril de 2018. Se incluyeron pacientes con masa o tumefacción a nivel sacro. Con seguimiento a 12 meses, Se excluyeron aquellos pacientes con infecciones en el área quirúrgica o recidivas por cirugías previas. Resultados: de 15 candidatos que cumplieron los criterios de inclusión y ninguno de exclusión. Discusión: Técnica quirúrgica con tasas de complicación aceptable, recurrencia nula a seguimiento a un año, con excelente aceptación por los pacientes. Conclusión: El colgajo en H para la resolución del quiste pilonidal, es una alternativa terapéutica más para la resolución de esta patología, con buena tolerancia por parte del paciente y resultados satisfactorios.
Palabras claves: Quiste pilonidal, Quiste Sacroccígeo, Colgajo, Tratamiento, Cirugía, Recurrencia.
Necesidades psicológicas básicas asociadas en la práctica de deporte individual y colectivo (Basic psychological needs associated with the practice of individual and collective sport)
Authors: De Juan Eduardo Pellicer , García Martínez Salvador , Valero Alberto Ferriz 
Published: June 2021

Introducción: El docente de educación física a través de la práctica deportiva trata de motivar intrínsecamente a su alumnado a través de prácticas deportivas, utilizando tareas que siguen la filosofía de la teoría de la autodeterminación. Método: En este estudio cuantitativo y cuasi experimental se observa qué práctica deportiva satisface en mayor medida las necesidades psicológicas básicas de adolescentes. Analizando. Resultados: El análisis de datos mostró una mejora de la sensación de autonomía tras la intervención a través del deporte individual. Conclusión: Las necesidades psicológicas básicas tienen un impacto positivo a través del deporte y con aportaciones diferentes en función del deporte desarrollado.
Abstract. Introduction: The physical education teacher through sports practice tries to motivate intrinsically his students through sport practices, using tasks that follow the philosophy of self-determination theory. Method: In this quantitative and quasi-experimental study, it is observed which sport practice best satisfies the basic psychological needs of adolescent. Analyzing the implementation of an individual sport and a collective sport over six intervention sessions of each sport with compulsory secondary education students using the basic psychological needs measurement scale (BPNES). Results: Data analysis showed an improvement in the feeling of autonomy after the intervention through individual sport. Conclusion: Basic psychological needs have a positive impact through sport and with different contributions depending on the sport developed.
Urgensi Peran Orang Tua Membangun Kepemimpinan Anak di Era Disrupsi Teknologi Berdasarkan Ulangan 6: 6-9
Authors: Santosa Santosa 
Published: June 2021

Technological disruption has an impact on fundamental changes in the order of human life. The disruption of technology has a positive and negative impact on human life. Facing the change and the impact of the technological disruption, the role of parents is very important in shaping leadership in children. This research was conducted by studying literature and text analysis of the Book of Deuteronomy 6:6-9. The results of this study aim to describe the urgency of the role of parents in building children's leadership according to Deuteronomy 6:6-9 in an era of technological disruption. The conclusion is the urgency of the role of parents in building children's leadership in an era of technological disruption according to Deuteronomy 6:6-9, among others: 1) To become spiritual educators of children. 2) Become a role model for spiritual discipline. 3) Discipline the spiritual growth of children. 4) Improve the relationship with children. 5) Give children responsibility for their spiritual growth. 6) Become a role model in healthy social media.AbstrakDisrupsi teknologi berdampak terhadap perubahan tatanan kehidupan manusia secara fundamental. Disrupsi teknologi memberi dampak positif dan negatif bagi kehidupan manusia. Menghadapi perubahan dan dampak akibat disrupsi teknologi, peran orang tua sangat penting dalam membentuk kepemimpinan dalam diri anak. Penelitian ini dilakukan dengan studi literatur dan analisis teks Kitab Ulangan 6: 6-9. Hasil penelitian ini bertujuan mendiskripsikan urgensi peran orang tua membangun kepemimpinan anak menurut Kitab Ulangan 6: 6-9 di era disrupsi teknologi. Diperoleh kesimpulan urgensi peran orang tua membangun kepemimpinan anak di era disrupsi teknologi menurut Ulangan 6: 6-9 antara lain: 1) Menjadi pendidik rohani Anak. 2) Menjadi role model disiplin rohani. 3) Mendisiplin pertumbuhan rohani anak. 4) Meningkatkan relasional dengan anak. 5) Memberi tanggungjawab anak terhadap pertumbuhan rohaninya. 6) Menjadi role model bermedia sosial sehat.