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The Effect of Various Polynaphthalene Sulfonate Based Superplasticizers on the Workability of Reactive Powder Concrete DOI:  https://doi.org/10.30564/jbms.v2i1.2731 Abstract A superplasticizer is a type of chemical admixture used to alter the workability (viscosity) of fresh concrete. The workability of fresh concrete is often of particular importance when the water-to-cement (w/c) ratio is low and a particular workability is desired. Reactive Powder Concrete (RPC) is a high-strength concrete formulated to provide compressive strengths exceeding 130MPa and made of primarily powders. RPC materials typically have a very low w/c, which requires the use of a chemical admixture in order to make the material workable for placing, handling and consolidating. Superplasticizer are commonly used for this purpose. Superplasticizers are developed from different formulations, the most common being Polynaphthalene Sulfonate (PNS), Polymelamine Sulfonate (PMS) and Polycarboxylate Ether (PCE). Thi...

Optimization Model and Pollution Treatment of Sintering Ore Distribution DOI:  https://doi.org/10.30564/jbms.v2i1.2718 Abstract sintering process plays an important role in iron and steel smelting process. The subsequent production of blast furnace ironmaking is directly affected by the quality of sinter. Among them, the proportion of raw materials and the advanced degree of sintering process are the two main factors affecting the quality of sinter. Because the control parameters of sintering process are too many and the physical and chemical process is too complex, it is difficult to establish and control the model accurately. Therefore, workers have long relied on experience to set temperature and other factors to engage in production, resulting in the quality of sinter is unstable, the cost is not easy to be controlled. Moreover, the flue gas produced in the sintering process will have different effects on the environment. Through the data analysis of the ore distribution scheme...

Concrete Mix Design by IS, ACI and BS Methods: A Comparative Analysis DOI:  https://doi.org/10.30564/jbms.v2i1.2636 Abstract Concrete is one of the most consumable construction materials on the earth. The concrete constitutes cement, sand, gravel, water and/or additives in definite proportions. The proportions of raw materials of concrete are decided by the concrete mix design. The mix design depends on the various factors. For mix design, most of the countries have their own specifications. In the present study, standard guidelines of India, Britain and America for the concrete mix design have been discussed. The concrete grades of M25, M35 and M45 were designed and compared. Indian Standards were also compared. It was concluded that new revised version of Indian Standard code has the lowest value of water/cement ratio and highest quantity of cement as compared to other standards. Keywords:  Concrete, mix design, Indian Standards, ACI code, BS code

Recent Advancement in the Healthcare Domain Using Various Methods DOI:  https://doi.org/10.30564/jcsr.v4i1.4471 References [1] Sullivan, H.T., Sahasrabudhe, S., 2017. Envisioning inclusive futures: technology-based assistive sensory and action substitution. Futur. J. 87, 140-148. [2] Yin, Y., Zeng, Y., Chen, X., et al., 2016. The Internet of Things in healthcare: an overview. J. Ind. Inf. Integr. 1, 3-13. [3] Saha, H.N., Supratim Auddy, S.P., 2017. Health Monitoring using Internet of Things (IoT). IEEE Journal. pp. 69-73. [4] Khan, S.F., 2017. Health Care Monitoring System in Internet of Things (loT) by Using RFID. IEEE International Conference on Industrial Technology and Management. pp. 198-204. [5] Moeen Hassanalieragh, Alex Page, TolgaSoyata, et al., 2015. Health Monitoring and Management Using Internet-of-Things (IoT)Sensing with Cloud-Based Processing: Opportunities and Challenges. [6] Gupta, M.S.D., Patchava, V., Menezes, V., Oct 2015. Healthcare based on iot using raspberry...

A Study on Automatic Latent Fingerprint Identification System DOI:  https://doi.org/10.30564/jcsr.v4i1.4388 Abstract Latent fingerprints are the unintentional impressions found at the crime scenes and are considered crucial evidence in criminal identification. Law enforcement and forensic agencies have been using latent fingerprints as testimony in courts. However, since the latent fingerprints are accidentally leftover on different surfaces, the lifted prints look inferior. Therefore, a tremendous amount of research is being carried out in automatic latent fingerprint identification to improve the overall fingerprint recognition performance. As a result, there is an ever-growing demand to develop reliable and robust systems. In this regard, we present a comprehensive literature review of the existing methods utilized in latent fingerprint acquisition, segmentation, quality assessment, enhancement, feature extraction, and matching steps. Later, we provide insight into different ben...

Periodic Solution for a Complex-valued Network Model with Discrete Delay DOI:  https://doi.org/10.30564/jcsr.v4i1.4374 Abstract For a tridiagonal two-layer real six-neuron model, the Hopf bifurcation was investigated by studying the eigenvalue equations of the related linear system in the literature. In the present paper, we extend this two-layer real six-neuron network model into a complex-valued delayed network model. Based on the mathematical analysis method, some sufficient conditions to guarantee the existence of periodic oscillatory solutions are established under the assumption that the activation function can be separated into its real and imaginary parts. Our sufficient conditions obtained by the mathematical analysis method in this paper are simpler than those obtained by the Hopf bifurcation method. Computer simulation is provided to illustrate the correctness of the theoretical results. Keywords:  Complex-valued neural network model, Delay, Periodic solution

A Case Study of Mobile Health Applications: The OWASP Risk of Insufficient Cryptography DOI:  https://doi.org/10.30564/jcsr.v4i1.4271 Abstract Mobile devices are being deployed rapidly for both private and professional reasons. One area of that has been growing is in releasing healthcare applications into the mobile marketplaces for health management. These applications help individuals track their own biorhythms and contain sensitive information. This case study examines the source code of mobile applications released to GitHub for the Risk of Insufficient Cryptography in the Top Ten Mobile Open Web Application Security Project risks. We first develop and justify a mobile OWASP Cryptographic knowledgegraph for detecting security weaknesses specific to mobile applications which can be extended to other domains involving cryptography. We then analyze the source code of 203 open source healthcare mobile applications and report on their usage of cryptography in the applications. Our f...

Embedding 3-D Gaze Points on a 3-D Visual Field: A Case of Transparency DOI:  https://doi.org/10.30564/jcsr.v4i1.4037 Abstract The paper seeks to demonstrates the likelihood of embedding a 3D gaze point on a 3D visual field, the visual field is inform of a game console where the user has to play from one level to the other by overcoming obstacles that will lead them to the next level. Complex game interface is sometimes difficult for the player to progress to next level of the game and the developers also find it difficult to regulate the game for an average player. The model serves as an analytical tool for game adaptations and also players can track their response to the game. Custom eye tracking and 3D object tracking algorithms were developed to enhance the analysis of the procedure. This is a part of the contributions to user interface design in the aspect of visual transparency. The development and testing of human computer interaction uses and application is more easily inve...

Efficient Feature Selection and ML Algorithm for Accurate Diagnostics DOI:  https://doi.org/10.30564/jcsr.v4i1.3852 Abstract Machine learning algorithms have been deployed in numerous optimization, prediction and classification problems. This has endeared them for application in fields such as computer networks and medical diagnosis. Although these machine learning algorithms achieve convincing results in these fields, they face numerous challenges when deployed on imbalanced dataset. Consequently, these algorithms are often biased towards majority class, hence unable to generalize the learning process. In addition, they are unable to effectively deal with high-dimensional datasets. Moreover, the utilization of conventional feature selection techniques from a dataset based on attribute significance render them ineffective for majority of the diagnosis applications. In this paper, feature selection is executed using the more effective Neighbour Components Analysis (NCA). During the ...

Editorial for Advances in Geological and Geotechnical Engineering Research DOI:  https://doi.org/10.30564/agger.v4i1.4341 References [1] Shirazi, A., Shirazy, A., Pour, A.B., et al., 2022. Investigation of Environmental and Biological Effects of Rare Earth Elements (REEs) with a Special Focus on Industrial and Mining Pollutions in Iran: A Review. Advances in Geological and Geotechnical Engineering Research .4(1), 1-10. [2] Rasouli, H., 2022. Climate Change Impacts on Water Resource and Air Pollution in Kabul Sub-basins, Afghanistan. Advances in Geological and Geotechnical Engineering Research. 4(1), 11-27. [3] Chukwu, A., 2022. Geochemical Characterization of Mineralized Pegmatites around Wowyen Areas, Akwanga, Northcentral Nigeria. Advances in Geological and Geotechnical Engineering Research. 4(1), 37-48. [4] Unger, Z., LeClair, D., 2022. Review of the Ochsenius Theory for Salt Generation in the Transylvanian Basin, Romania. Advances in Geological and Geo technical Engineering Res...

Geochemical Characterization of Mineralized Pegmatites around Wowyen Areas, Akwanga, Northcentral Nigeria DOI:  https://doi.org/10.30564/agger.v4i1.4314 Abstract This study aims to account for the petrogenesis and mineralization of pegmatites around the Wowyen area, northcentral basement complex,Nigeria. Field studies, petrography and whole rock geochemistry (Major oxides were estimated by X-Ray Fluorescence while the trace elements were estimated by Inductively Coupled Plasma Mass Spectrometry) where the methods adopted. The pegmatites around Wowyen area are emplaced in the remobilized belt of the Nigerian Basement complex. They are predominantly complex pegmatites (rare-metal pegmatites) which are intruded in the biotite-muscovite gneiss while the simple pegmatites intruded more in the migmatitic banded gneiss. The major components of the complex pegmatites are quartz, albite and muscovite and tourmaline.The accessory co...

Climate Change Impacts on Water Resource and Air Pollution in Kabul Sub-basins, Afghanistan DOI:  https://doi.org/10.30564/agger.v4i1.4312 Abstract This Climate Change Impacts on Water Resources and Air Pollution,research is carried out to analysis Hydro-meteorological and groundwater data in Kabul Sub-basins, Afghanistan. The main objective of this research is to find out natural causes of climate change effects on surface and to,groundwater resources and air pollutions, these data are collected from diferent Hydrometeoroiogical stations and observations in Kabul Subbasins for different years (1957 to 2017). For completion this research they used two categories of data analysis; one is hydro meteorological analysis,and the other is groundwater level analysis. In hydro meteorological analysis air temperature, rainfall and discharge have been recovered by this research in Kabul Sub-basins, a number of air temperature, rainfall,d...

Review of the Ochsenius Theory for Salt Generation in the Transylvanian Basin, Romania DOI:  https://doi.org/10.30564/agger.v4i1.4307 Abstract This short study aims to highlight contradictions in Ochsenius’s model for the basin-wide salt generation (Kara-Bogas bay desiccation). Without claiming completeness, and through numerous records cited from the specific literature, we attempt to point at crucial incoherencies in the classical evaporitic model. In our presupposition, these might have led our ancestors to conclude that basin-wide salt generation needs theoretically well-based models. This is emphatically true for the Transylvanian Basin,Romania.The selected records are basic for the specific topic. We checked their validity by logical reasoning and by literature references.As for salt generation, the classical Ochsenius model has been upheld for the generation of evaporates even though it has been known that there are records denying the exclusivity of the evaporation model. I...

Investigation of Environmental and Biological Effects of Rare Earth Elements (REEs) with a Special Focus on Industrial and Mining Pollutions in Iran: A Review DOI:  https://doi.org/10.30564/agger.v4i1.4290 Abstract The present article is a review study on the types of rare earth elements (REEs), environmental and biological effects as well as the sources of emission of these elements as pollution in nature. The purpose of this study is to provide a vision in environmental planning and control of pollution caused by REEs. The evaluation of rare earth elements was studied in human life and its environmental and biological effects, which have particular importance and are entering the life cycle through industrial and mining pollution sources. Since mining activities intensify the dispersion of these elements in the environment and the existence of industrial factories located around urban drainage system plays a unique role in creating and spreading pollution caused by rare earth ele...

Characterization of PM2.5 Mass Concentration in the Onshore of Sanya, China DOI:  https://doi.org/10.30564/jasr.v3i2.2134 Abstract Numbers of real-time data (E-BAM) of PM 2.5  were collected in the period from Jan 8 th  2012 to Jan 1 st  2013 at the laboratory of Tropical Ocean University (Sanya, China). The average mass concentration was 19.7 μg/m³. The highest 40.5 μg/m³ in October compared to the lowest 14.1 μg/m³ in July. From a seasonal perspective, the average PM 2.5  mass concentration in fall and winter are relatively higher than that in both spring and summer. On the basis of satellite map of fire points and backward trajectories of the air masses, we primarily deduced that the PM 2.5  in Sanya may be caused by the biomass burning and industrial pollutants from the area of Pearl River Delta of China and the Indo-China peninsula (e.g. Vietnam, Laos). Keywords:  Sanya, PM2.5, Carbonaceous aerosol, Biomass burning

Global Warming and Its Multiple Causes DOI:  https://doi.org/10.30564/jasr.v3i2.2013 Abstract The global warming which preoccupies humanity, is still considered to be linked to a single cause which is the emission of greenhouse gases, CO2 in particular. In this article, we try to show that, on the one hand, the greenhouse effect (the radiative imprisonment to use the scientific term) took place in conjunction with the infrared radiation emitted by the earth. The surplus of CO2 due to the combustion of fossil fuels, but also the surplus of infrared emissions from artificialized soils contribute together or each separately, to the imbalance of the natural greenhouse effect and the trend of global warming. In addition, another actor acting directly and instantaneously on the warming of the ambient air is the heat released by fossil fuels estimated at 17415.1010 kWh / year inducing a rise in temperature of 0.122°C, or 12.2°C / century. Keywords:  Greenhouse effect gases, Global wa...

Understanding the Nexus between Climate Change, the Shift in Land Use toward Cashew Production and Rural Food Security in Ghana; the Experiences of Farmers in the Transition Zone of Ghana DOI:  https://doi.org/10.30564/jasr.v3i2.2010 Abstract This study summarises the findings from a study investigating rural small-holding farmers’ experiences on the shift from food crop to cashew in the forest/savanna transitional agro-ecological zone of Ghana and its impact on rural food security. Using a mix method approach, the study sampled the views of 400 farmers from 9 farming communities in the Wenchi Municipality of Ghana via questionnaire and semi-structured interview and collated statistical data on crop production to trace the nexus between climate change, agrarian land-use decisions and food security. The study found evidence of increasing shift from food crop to cashew production. This was evidenced by increasing cashew cultivation and cashew output and decreasing total land acreage ...

Planetary Layer Lapse Rate Comparison of Tropical,Montane and Hot Semi-Arid Climates of Nigeria DOI:  https://doi.org/10.30564/jasr.v3i2.2005 Abstract This study assessed the pattern of planetary layer lapse rate across the major climate belts of Nigeria. Six years’ data (2010-2015) for air temperature values between 1000 mbar and 850 mbar atmospheric pressure levels were acquired from Era-Interim Re-analysis data centre. The data was retrieved at 6-hourly synoptic hours: 0000H, 0600H, 1200H and 1800H at 0.125o grid resolution. Results showed that the lower tropospheric layers throughout the various climate belts has a positive lapse rate. Findings also revealed that the average annual lapse rate condition were: Tropical wet zone (Port Harcourt) -5.6 oC/km; Bi-modal Tropical continental zone (Enugu) 5.8 oC/km; Montane zone (Jos) -6.5 oC/km; Mono-modal Tropical continental zone (Kano) -6.6 oC/km; and Hot semi-arid zone (Maiduguri) -6.6 oC/km. This average values presents the lapse r...

Features of the Three Dimensional Structure in the Pacific Sub-surface Layer in Summer DOI:  https://doi.org/10.30564/jasr.v3i2.1999 Abstract The anomaly of the summer sea temperature is analyzed by a spatial-temporal synthetically rotated orthogonal function (REOF) at three different depths (0 m, 40 m, and 120 m) over the area 110°E~100°W and 30°S~60°N. The spatial-temporal distribution shows that the “signal” of annual anomaly is stronger in the sub-surface layer than the surface layer, and it is stronger in the eastern equatorial Pacific than in the western area. The spatial structure of the sea temperature anomaly at different layers is related to both the ocean current and the interaction of ocean and atmosphere. The temporal changing trend of the sub-surface sea temperature in different areas shows that the annual mean sea temperature increases and the annual variability evidently increases from the 1980s, and these keep the same trend ...

Applications in New River-meander Model DOI:  https://doi.org/10.30564/jgr.v3i1.1896 Abstract If the sediment transport behaves as bed-load, the sediment surface at meandering channel will deform into transverse waves.This investigation is a new model for prediction of river-meander models in nature.The aim of this research is to give a precise method whose bed forms can have a variety of scales ranging from ripples through small dunes to fully developed dunes or sandwaves.Its mathematical model will be investigated. Keywords:  Sand waves, Sediment, Meandering, Transportation

Development of River Meander Model DOI:  https://doi.org/10.30564/jgr.v3i1.1845 Abstract In the studies of open-channel flow with suspended sediments, used a constant of Von Karman κ in a model for velocity profile. The augmentation parameters have been added by various researchers in more recent development of the boundary-layer theory of meander development. In this research new parameters will be included because of the existence of the turbulent flow region in meandering channels because of boundary-layer theory. Keywords:  Meander, Flow, Model, Boundary layer, Sediment

Sediment Distribution of the River Boundary Layer DOI:  https://doi.org/10.30564/jgr.v3i1.1844 Abstract The movement of particles on the river boundary layer is a complex phenomena which can be never solved by a deterministic approach. The unsteady non uniform conditions in flow boundary layer show the result of water surface and bed stream changing with time and location of particles. To determine the movement of boundary layer particles other new theories about stochastic processes using the theory of probability and statistics in river alluvial channels will give better results. Keywords:  Sediment transport, Unsteady, Stochastic, Stream

Empirical Studies in Alluvial Streams DOI:  https://doi.org/10.30564/jgr.v3i1.1668 Abstract Meander flow takes place in one single channel which oscillates more or less regularly with amplitudes that tend to increase with time. Meanders are found in beds of fine sediments with gentle slopes. In this study, effort will be made to investigate meanders’ turbulent boundary layer and to improve the present knowledge about the river meandering phenomena. It is assumed that the development of the perturbations which develop into meanders or braids, is longer than the width of the channel. Interaction be tween the flow and mobile boundaries produces channel patterns which are classified as meandering or braided. It is therefore long compared with the ripples or dunes which cover the bed of such a channel and whose wave length is shorter than the width of the channel. The variation of resistance to flow and rate of transport of bed material with velocity are discussed briefly and taken into...

Discussion at Maximum Sediment Discharge Theory DOI:  https://doi.org/10.30564/jgr.v3i1.1572 Abstract It is observed the gravel river sediment discharge with existing empirical regime relationships. The aim of the research is to give a mathematical model about the stable cross-section geometry and to determine a model for the stable slope of an alluvial channel which is in nature seldom stable. In an alluvial channel to reach an equilibrium condition, it changes its plane geometry until to have a stable condition in plane configuration. There are three different parameters in plan configuration about river behavior: width, depth and slope. Keywords:  Sediment transport, Mathematical model, Empirical regime relationship

A Comprehensive Review of Water Quality Monitoring and Assessment in Delta State, Southern Part of Nigeria DOI:  https://doi.org/10.30564/jees.v3i1.2900 Abstract This research presents a review on water resources in Delta state, southern part of Nigeria, with emphasis on hydrogeochemical and microbial assessment. It evaluates factors responsible for water contamination, and their resulting health challenges within the study area. To achieve the objective of this study, related articles were downloaded from Google, published article on influence of hydrogeochemical and microbial activities on water resources. These articles were thoroughly studied. Findings from this study, suggested that groundwater was more studied than surface water. We also observed that groundwater within the riverine communities is much more prone to pollution when compared to groundwater in an upland area. Results from various authors suggested that, larger percentage of groundwater showed presence of colifor...