bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of the effect of cement industry effluent discharge on water quality of Ngo River in Benue, Nigeria
Authors: Aga T.A. , Anyadike C.C. , Mbajiorgu C.C. , Ogwo V. 
Published: September 2020

Ngo River in Gboko, Benue State, Nigeria which serves as a source of water for domestic and agricultural purposes for the agrarian community receives effluent from Dangote Cement factory. Physicochemical analysis of the effluent outfall and water samples collected along 15 km of the river stretch were carried out in dry and wet seasons respectively. The results obtained were compared to FEPA, WHO and NESREA Standards. For effluent outfall, Temperature, TDS, pH, EC, BOD, COD, sulphate and chloride, total hardness, calcium and magnesium, were found to be within the FEPA standards, while TSS, turbidity, and nitrate, were above the standards. Along 15 km study reach, mean temperature range of 32.4oC to 29.0oC, a TSS of 224 mg/l to 218 mg/l, a turbidity of 45 NTU to 42 NTU, and DO of 1.6 mg/l to 1.2 mg/l were obtain during the dry season, while mean temperature range of 36.8oC to 36.6oC, a TSS of 255 mg/l to 252 mg/l, turbidity of 176 NTU to 168 NTU, and DO 2.8 mg/l to 2. 6 mg/l were obtained during the wet seasons. These results were above WHO and NESREA temperature (25oC drinking water), TSS (30 mg/l domestic and 100 mg/l agriculture) water use, 5 NTU turbidity, and 5mg/l to 7.5mg/l DO standards. The effluent is relatively treated and effects such as aquatic depletion in the environment, decreased soil pore size and decreased permeability in the use of the water for irrigation, and water related diseases are not ruled out.
Keywords: Cement industry, Effluent discharge, Water quality, Ngo River.
Modelling and prediction of water current using artificial neural networks: A case study of the commodore channel
Authors: Badejo O.T. , Jegede O.T. , Kayode H.O. , Durodola O.O. , Akintoye S.O. 
Published: September 2020

Water current modelling and prediction techniques along coastal inlets have attracted growing concern in recent years. This is largely so because water current component continues to be a major contributor to movement of sediments, tracers and pollutants, and to a whole range of offshore applications in engineering, environmental observations, exploration and oceanography. However, most research works are lacking adequate methods for developing precise prediction models along the commodore channel in Lagos State. This research work presents water current prediction using Artificial Neural Networks (ANNs). The Back Propagation (BP) technique with feed forward architecture and optimized training algorithm known as Levenbergq-Marquardt was used to develop a Neural Network Water Current Prediction model-(NNWLM) in a MATLAB programming environment. It was passed through model sensitivity analysis and afterwards tested with data from the Commodore channel (Lagos Lagoon). The result revealed prediction accuracy ranging from 0.012 to 0.045 in terms of Mean Square Error (MSE) and 0.80 to 0.83 in terms of correlation coefficient (R-value). With this high performance, the Neural network developed in this work can be used as a veritable tool for water current prediction along the Commodore channel and in extension a wide variety of coastal engineering and development, covering sediment management program: dredging, sand bypassing, beach-contingency plans, and protection of beaches vulnerable to storm erosion and monitoring and prediction of long-term water current variations in coastal inlets.
Keywords: Artificial Neural Network, Commodore Channel, Coastal Inlet, Water Current, Back Propagation.
Assessment of cement concrete partially replaced with polystyrene and plantain peel ash
Authors: Aderinola O.O. , Yusuf Y. , Omotayo O.O. 
Published: September 2020

This study assessed the effect of partial replacement of cement with plantain peel ash (PPA) and Polystrene (POL) on the compressive strength of concrete as a means of managing waste. Concrete specimens were prepared with a mix ratio of 1:2:4 (cement: sand: granite) water/cement ratio of 0.6, thereafter cement was partially replaced with PPA, POL and PPA/POL in increasing percentages of 5, 10, 15 and 20% by weight. Physical, chemical and microstructural analyses were also conducted on the aggregates and materials used. Workability of the concrete specimens was observed to improve upon addition of PPA and POL separately but not with blended PPA/POL while compressive strength decreased with addition of the three compounds. The observed results can be attributed to the lack of sufficient cementitious properties in the materials, and hence, the study discourages the use of these materials as they do not significantly improve concrete strength.
Keywords: Plantain Peel Ash (PPA), Polystyrene (POL), Compressive Strength, Sustainable Waste Management
Alternatif Gübrelerin Bazı Ekmeklik Buğday (Triticum aestivum ssp. vulgare) Çeşitlerinde Verim ve Verim Öğelerine Etkisi
Authors: Mazlum ERDEM  , Burak ÖZDEMİR  , Erol ORAL  , Fevzi ALTUNER  , Mehmet ÜLKER  
Published: September 2020

Bu araştırma, 2016-17 ve 2017-18 kışlık yetiştirme sezonunda Van ekolojik şartlarında hümik asit, rizobakteri (PGPR) ve kimyasal (N+P) gübre uygulamalarının bazı ekmeklik buğday (Triticum aestivum ssp. vulgare) çeşitlerinde verim ve verim öğelerine etkisinin belirlenmesi amacıyla yürütülmüştür. Denemede Altay-2000, Gelibolu, Saroz-95, Kırgız-95, Sultan-95, Karasu-90, Mızrak, Müfitbey ve Yakar-99 çeşitleri kullanılmıştır. Deneme Van Yüzüncü Yıl Üniversitesi Ziraat Fakültesine ait deneme tarlalarında Tesadüf Bloklarında Bölünmüş Parseller deneme desenine göre 3 tekerrürlü olarak yürütülmüştür. Çalışmada, hümik asit, PGPR ve kimyasal gübre uygulamalarının buğday bitkisinde; m²’deki başak sayısı (adet), bitki boyu (cm), başakta tane sayısı (adet), , bin tane ağırlığı (g), toplam verim (kg/da) ve tane verimi (kg/da) üzerine etkileri incelenmiştir. Araştırma sonunda elde edilen verilere göre; m2 ’de başak sayısı 323-529 adet arasında, bitki boyu 71.5-101.6 cm, başakta tane sayısı 33.5-50.5 adet, bin tane ağırlığı 33.4-43.9 g, tane verimi 149-383 kg/da ve toplam verim 472-1137 kg/da arasında değişim göstermiştir. En yüksek tane verimi Kırgız-95 çeşidinde 405 kg/da ile geleneksel gübre uygulamasından elde edilirken, en düşük değer ise Gelibolu çeşidinde 149 kg/da ile kontrol parsellerinden elde edilmiştir.
Azotlu Gübre Dozlarının Karabuğday (Fagopyrum esculentum Moench.) Bitkisinin Tohum Verimi ve Bazı Tarımsal Özelliklerine Etkisi
Authors: Gülen ÖZYAZICI  
Published: September 2020

Bu araştırmada, azot dozlarının karabuğday (Fagopyrum esculentum Moench.) bitkisinin tohum verimi ve bazı tarımsal özelliklerine etkisinin ortaya konulması amaçlanmıştır. Araştırma, Siirt ekolojik koşullarında 2020 yılında yürütülmüştür. Çalışmada, azotlu gübrenin (N0= 0 kg da-1 N, N4= 4 kg da-1 N, N8= 8 kg da-1 N, N12= 12 kg da-1 N, N16= 16 kg da-1 N) 5 farklı dozu faktör olarak ele alınmıştır. Araştırma sonuçlarına göre, azot dozlarının karabuğday bitkisinin tohum verimi, verime etkili bazı tarımsal özellikleri ile protein oranı üzerine anlamlı etkilerinin olduğu belirlenmiştir. Araştırmada en yüksek; dal sayısı, yaprak sayısı, kömeç sayısı, tohum verimi, bin tane ağırlığı ve protein oranı N12 dozunda saptanmıştır. En yüksek bitki boyu, N12 ve N16 azot dozlarında belirlenmiştir. En yüksek biyolojik verim ise N16 dozunda tespit edilmiştir. Azot dozlarına göre bitki boyu 63.00-71.50 cm, dal sayısı 3.28-5.00 adet bitki-1, yaprak sayısı 19.25-31.00 adet bitki-1, kömeç sayısı 12.75-23.50 adet bitki-1, biyolojik verim 361.1-993.6 kg da-1, tohum verimi 58.8-149.2 kg da-1, bin tane ağırlığı 19.39-23.52 g, protein oranı % 10.72-13.65 arasında değişim göstermiştir. Organik madde içeriği düşük topraklarda, karabuğday yetiştiriciliğinde tohum verimi yönünden 11.48 kg da-1 azot uygulanabileceği sonucuna varılmıştır.
Propaganda Public Safety: Specifying a model of social representations of aging, youth and old age
Authors: Valdés Ambrosio Oscar , Gutiérrez Fiallo José Manuel 
Published: September 2020

Background. Studies of propaganda, security, warn youth and old age; 1) the systematic dissemination of crimes Attributed to political corruption;2) state advertising as legitimate security administrator His rectory; 3) the delegitimation of Citizens to Consider them incapable of preventative crime Initiatives; 4) are excluded by the industries older Assuming That They are incapable of self-monitoring and self-care.
Objective. Specify a model for studying the effects of advertising social security in the representations of aging, youth and old age.
Method. a non-experimental, retrospective and exploratory study with a nonrandom was Conducted selection of indexed sources -Dialnet, Latindez, Redalic- the discretion of explanatory variables Between correlations paths.
Results.The model included three hypotheses to Explain the paths of correlations Between four and seven indicators constructs for each.
Discussion.The revised theoretical, conceptual and empirical frameworks warn the inclusion of other variables such as helplessness, self-control farsightedness, beliefs, attitudes and intentions That would complement the specified model.
Conclusion.A comprehensive model would Explain the correlations paths from theoretical frameworks That Establish the Difference between crime prevention capabilities, systematic observation of corruption With emphasis on Impunity.
DISEÑO Y FABRICACIÓN DE EQUIPO DIDÁCTICO DIGITAL PARA LA SIMULACIÓN Y ANÁLISIS DE VELOCIDAD Y TURBULENCIA EN FLUIDOS INCOMPRESIBLES
Authors: MONTIJO-VALENZUELA ELIEL EDUARDO , Espinoza-Zallas Francisco Alán , Borboa-Acosta Eugenio , Monteverde-Gutiérrez Ofelia , Rivera-Landaverde Rodolfo Ulises , Sámano-Hermosillo Efrén 
Published: September 2020

La didáctica tiene una relevancia muy importante en el proceso de enseñanza-aprendizaje, sobre todo dentro del aula y en campo. Dentro de las herramientas didácticas podemos encontrar un número extenso de posibilidades, desde metodologías para solución de problemas básicos, hasta la implementación de aulas virtuales remotas para la gestión del aprendizaje o el uso de laboratorios, por mencionar algunos. Otro tipo de herramientas didácticas de alto valor en el área de la enseñanza-aprendizaje, son los equipos didácticos, que ayudan al profesor y al alumno, a explicar y comprender fenómenos, que, de forma analítica o conceptual, no se describen por si solos, por ejemplo, algunos efectos vinculados a la mecánica de fluidos, sobre todo los que se efectúan en sistemas cerrados. Esta investigación tiene por objetivo, diseñar y fabricar un equipo didáctico digital para la simulación y análisis de flujos incompresibles; específicamente agua, basándonos en la hipótesis de que se pueden interpretar variables y factores de la mecánica de fluidos a valores cuantitativos y cualitativos, mediante el procesamiento de dispositivo Arduino Uno y el uso de sensores electrónicos. Para poder demostrar la hipótesis se realizó una metodología compuesta por cinco etapas. En la etapa uno, se realizó un marco teórico referente a las ecuaciones y variables de mecánica de fluidos para la solución de velocidad y turbulencia. En la etapa dos se seleccionaron los componentes hidráulicos, electrónicos y de sensado. En la etapa tres se realizó un diseño digital tridimensional del tablero. En la etapa cuatro se realizó la integración del sistema hidráulico. En la etapa cinco se integraron los sistemas de control. En la etapa seis se realizó la programación de los sensores y pantallas en software Arduino, y en la etapa siete se integró todo el equipo didáctico. Como resultado se obtuvo un equipo didáctico digital para la medición de velocidad y turbulencia, con un margen de error de entre 3 y 5% respecto a los cálculos teóricos.
PREVENCIÓN DE ADICCIONES. EMPODERAR A LOS ADOLESCENTES PARA EL ESTABLECIMIENTO DE ESTILOS DE VIDA SALUDABLES: EL CASO DE LOS INHALANTES
Authors: Quintero Soto María Luisa , Salvador Cruz Judhit , García Lirios Cruz 
Published: September 2020

Uno de los principales problemas de este siglo, es el consumo indebido de drogas, sustancias estupefacientes, y por las consecuencias que representa sobrepasa los li?mites de la Salud Pu?blica, para convertirse en un problema de urgente bu?squeda de soluciones, mediante la participacio?n activa desde la propia comunidad (Ortega et.al, 2005).
Nuestro pai?s en materia de salud y bienestar social enfrenta un creciente consumo de drogas legales e ilegales por un amplio sector de la poblacio?n y sus terribles consecuencias, debido a que estas sustancias alteran el funcionamiento del cuerpo, la mente, el comportamiento y la interaccio?n con otros y su uso puede generar adiccio?n y dan?os severos (CONADIC. et.al s/f).

Las sustancias estupefacientes: son aquellas cuyo uso esta? prohibido por la ley, porque su utilizacio?n no tiene una finalidad me?dicamente (terape?utica) sustentable. Entre estas drogas se encuentran: la cocai?na, la heroi?na, la marihuana, el LSD y otras. Tambie?n conocidas como: drogas ili?citas o ilegales. sustancias psicotro?picas: estas son las sustancias permitidas, es decir, que su uso no esta? prohibido, sin embargo, se encuentran controladas. Los me?dicos emplean algunas de estas para corregir desequilibrios y trastornos en el organismo. Proteger contra ciertas enfermedades, aliviar dolores y malestares. Muchas de estas drogas son vendidas y consumidas libremente como cualquier medicamento de venta sin receta. Otras, como medicamento de venta bajo receta, y otras como bebidas alcoho?licas y tabaco; tambie?n conocidas como: drogas licitas o legales.
En la presente investigacio?n haremos alusio?n exclusivamente al consumo de inhalantes, para lo cual mostramos una revisio?n del estado del arte para conocer las li?neas de investigacio?n que se han desarrollado en torno al tema, para posteriormente abordar sus caracteri?sticas, causas de las adicciones, dan?os y riesgo, las habilidades, actitudes, empoderamiento y prevencio?n que debera?n tener los individuos para enfrentan esta situacio?n.
FACTORES QUE INFLUYEN EN LA DECISIÓN DE COMPRA DE CARNE DE BOVINO POR PARTE DE LOS COMERCIALIZADORES EN NAVOJOA, SONORA.
Authors: HERMOSILLO ANDUAGA Gustavo Cesar , Kaplan Navarro José Cesar , López Vidaurry Jorge Martín , Molina Duarte Juana Yesenia 
Published: September 2020

Resumen

La ganadería bovina en México, significa una de las actividades del sector agropecuario más importantes por la oferta que se realiza con los productos cárnicos, así como su participación en la balanza comercial del país.
Por su parte, la ganadería de Sonora es una de las actividades económicas de mayor tradición y que da identidad al Estado. Siendo una de las principales entidades productoras de carne bovina a nivel nacional y reconocida por la alta calidad en sus productos.
En el Estado de Sonora los ganaderos prefieren engordar y exportar ganado en pie, ya que se ha convertido en una actividad muy atractiva dado los precios obtenidos y las condiciones comerciales actuales. Sin embargo, con esta práctica están transfiriendo la creación de valor a los importadores en Estados Unidos. Mediante esta investigación el productor de ganado en pie podrá conocer las características y preferencias de los consumidores nacionales y con esto determinar qué tan atractivo puede resultar el mercado mexicano para el consumo de sus productos y crear valor en suelo nacional para esta industria.
En este estudio se les preguntó a los comercializadores de carne de res de la ciudad de Navojoa, Sonora qué factores influyen al momento de decidir la compra de carne de bovino. Se encontró que estos prefieren la carne nacional sobre la importada, son consumidores con una alta fidelidad a su proveedor, privilegian la calidad, la higiene, el sabor, la variedad antes que el precio.
Se espera que con este estudio los productores de reses para exportación, consideren la opción de crear valor aquí mismo en el país, obteniendo mejor rentabilidad y creando nuevos puestos de trabajo. Asimismo, el gobierno al apoyar, generaría mayores contribuciones tributarias para la nación.

Palabras clave: Valor agregado, criterios de compra, cadena de valor
PENGARUH PENGEMBANGAN DAN MOTIVASI TERHADAP PRESTASI KERJA PEGAWAI DI PT. BEKASI SURYA PRATAMA
Authors: Lesmana Hendra 
Published: September 2020

This study aims to determine and analyze (1) the influence of development on employee job performance (2) the influence of motivation on employee job performance (3) the influence of development and motivation together towards achievement of employees in PT. Bekasi Surya Pratama.
The experiment was conducted at PT. Bekasi Surya Pratama with 49 respondents and the research conducted from July to November 2010. The analysis is carried out linear regression analysis, analysis of determination, t test and F test.
The hypotheses were (1) the influence of development (X1) will be increased employees job performance (Y) (2) the influence of motivation (X2) will be increased employees job performance (Y) (3) the influence of development (X1) and motivation (X2) are jointly working towards increased employees job performance (Y) in PT. Bekasi Surya Pratama.
Based on the testing of the first hypothesis might be any positive and significant influence between development (X1 variable) with Job Performance (variable Y) of employees in the PT. Bekasi Surya Pratama based tcount of 2.142, was larger than ttable (ttable = 2.01). Thus the Ha accepted and H0 is rejected.
Based on the testing of the second hypothesis might be any positive and significant influence between motivation (variable X2) with Job Performance (variable Y) of employees in PT. Bekasi Surya Pratama based tcount of 3.706, was larger than ttable (ttable = 2.01). Thus the Ha accepted and H0 is rejected.
Based on the testing of the third hypothesis might be any positive and significant influence between development (variable X1) and Motivation (X2) with Job Performance (variable Y) of employees in the PT. Bekasi Surya Pratama based on the value of F test Based on calculations, the value of Fcount = 201.311. Fcount greater than Ftable (Ftable = 3.20). Thus the Ha accepted and H0 is rejected. The result of linear regression equations to show the effect of development (X1) and motivation (X2) on work performance (Y) employees in the PT. Bekasi Surya Pratama obtained Y = 2.491 +0.358 X1 +0.645 X2.
Understanding and predicting large-scale hydrological variability in a changing environment
Authors: Massei Nicolas , Kingston Daniel G. , Hannah David M. , Vidal Jean-Philippe , Dieppois Bastien , Fossa Manuel , Hartmann Andreas , Lavers David A. , Laignel Benoit 
Published: September 2020

Abstract. In a context of climate, environmental, ecological and
socio-economical changes, understanding and predicting the response of
hydrological systems on regional to global spatial scales, and on
infra-seasonal to multidecadal time-scales, are major topics that must be
considered to tackle the challenge of water resource management
sustainability. In this context, a number of strongly-linked key issues need
to be addressed by the scientific community, including: (i) identifying
climate drivers of hydrological variations, (ii) understanding the
multi-frequency characteristics of hydroclimate variability, including
evolution of extremes (meteorological/hydrological event scale to long-term
natural/internal climate- or anthropogenic-driven variations and trends),
(iii) assessing the influence of local- to regional-scale basin properties on
hydrological system response to climate variability and change, (iv) identifying the evolving contribution of anthropogenic water use in observed
hydrological variations. Based on pan-European collaborations, activities of
the EURO-FRIEND “Large-scale variations in hydrological characteristics”
group aim at generating new findings to improve our understanding of
hydrological systems behavior sensu lato (i.e. surface and sub-surface) on
large spatial and temporal scales (i.e continental – multidecadal). Through
selected examples, this contribution emphasizes recent research developments
in characterizing and modeling of climate-hydrology linkages at different
temporal and spatial scales, as well as recent insights on climate-hydrology
scaling characteristics (i.e. long-term persistence, dependance of
processes, of hydrological behaviors, of large-scale climate/hydrology
linkages on time-/spatial scales), long-term hydrometeorological
reconstructions, and large-scale hydrological model refinement taking into
account spatial heterogeneity of watershed physical characteristics.
Modeling hydrologic processes and potential responses to climate change in an agro-silvo-pastoral watershed in the Mediterranean area
Authors: Brouziyne Youssef , Benaabidate Lahcen , Abouabdillah Aziz , Bouabid Rachid , Chehbouni Abdelghani 
Published: September 2020

Abstract. Precipitation changes and water use patterns are two factors affecting the water quantity; obviously, hydrologic processes are always linked to many elements in the watershed scale, so to understand water management issues it is fundamental to analyze the different elements of hydrologic processes occurring in the watershed. In this study, the “SWAT” model (Soil and Water Assessment Tool) has been used to simulate the water balance for the present climate conditions on a semi arid watershed located in the central North of Morocco (R'dom). The study watershed covers an area of 1993 km2, and is hosting farming, pasture and forestry related activities. The water stress situation in the R'dom watershed can be
summarized as limited resource facing increasing water demand. SWAT model was first run and calibrated under current climate; and was driven with
downscaled climate simulations to generate future hydrological projections
for R'dom watershed in the 2031 to 2050 horizon under two Representative
Concentration Pathways (RCPs): 4.5 and 8.5. The results of the study showed
that the water balance in R'dom watershed is dominated by evapotranspiration and the water resources distribution within the watershed is uneven and follows a decreasing gradient matching the flow direction. The main results of climate change scenarios showed that R'dom watershed will undergo significant decrease of water resources availability with more economic impact under the scenario RCP8.5 as all areas hosting the economical activities will be affected and the highest changes of water yield should be under this scenario.