bluuebunny/crossref_metadata_2025_split huggingface dataset:
The geological setting of arsenic enrichment in groundwater of the shallow aquifers of the Tista Floodplain, Rangpur, Bangladesh
Authors: Saha Sudip , H.M. Selim A. , Kanti Roy Mrinal 
Published: February 2021

Arsenic is present in water samples within the studied active floodplain areas of the Tista river, Rangpur Division, Bangladesh. All the water samples contain less arsenic than the WHO prescribed limit of 10 Î¼g/L. 93.33% groundwater samples have higher Mn content than the permissible limit of 0.01 mg/L of WHO. The heavy metal concentrations of water can be expressed as Fe>Mn>Zn>As on the basis of their mean content. The heavy metals are negatively correlated with the well depth which is indicative of the influence of the anthropogenic activities on the concentrations of heavy metals. The arsenic concentration in water samples is higher in the central part of the study area. The coarser grain size, dominance of physical weathering, elevated topography and the effective flushing of groundwater resulted low concentration of arsenic in the groundwater. The EDS study reveals that arsenic occurs as coating materials of the silicate minerals. The river waters also have arsenic content lower than WHOs permissible limit. The factor analysis reveals that the iron and arsenic is released by the chemical weathering of arsenic bearing minerals like pyrite and arsenopyrite. The Fe and Mn derived in the groundwater by the chemical weathering of iron and manganese bearing minerals such as iron rich clay, silicate minerals and iron sulfides.Â Â
Behavior of the clinopyroxenes trace elements in spinel-lherzolite xenoliths from Liri (Kapsiki plateau, Cameroon line)
Authors: Dagwai Nguihdama , Pierre Kamgang , GbambiÃ© Isaac Bertrand Mbowou , Gilles Chazot , IsmaÃ¯la Ngounouno 
Published: February 2021

Spinel-lherzolite xenoliths trapped within the alkali basalts flow in the Liri region (Kapsiki Plateau) have a protogranular texture and consist of olivine, orthopyroxene, clinopyroxene and spinel crystals. These xenoliths are residues of partial melting of the primitive mantle, with the low titanium content in clinopyroxene crystals (TiO2 < 0.5 wt.%). The clinopyroxene of the spinel-lherzolite xenoliths from Liri, are divided into two distinct groups according to their trace element characteristics. The variations in the rare earths elements make it possible to classify the different clynopyroxenes in two groups: the first group consisting of the samples of Liri (Liri 1, Liri 02, Liri 3, Liri 05 and Liri 5) rich in light rare earths elements (LREEs), with ratios (Ce/Yb)N normalized which vary between 3.00 and 7.78. It is probably a cryptic metasomatism due to the absence of hydrated minerals (such as amphibole) which caused these enrichments. The second group comprises samples of Liri (Liri 01, Liri 2, Liri 04, Liri 4) depleted in light rare earths elements, with the ratio in (Ce/Yb) N < 1.2. This depletion in rare earths elements results from the extraction of the melting liquid.Â Â Â Â
Assessing groundwater quality using water quality index in semiarid region of Aurangabad district, central India
Authors: R. Aher K. , L. Salve P. , G. Gaikwad S. 
Published: February 2021

This paper presents a study on the influence of geochemical parameters on groundwater quality in GV-35 watershed of Aurangabad district, Maharashtra, India. Groundwater samples were collected from different locations and their physiochemical quality parameter were analysed. Water quality index (WQI) was determined on the basis of various physical and chemical parameters like pH, electrical conductivity, turbidity, total dissolved solids, total hardness, calcium, magnesium, sulphate, chloride, nitrate, sodium, potassium, carbonate, bicarbonate, fluoride and iron. These parameters were determined for the calculation of water quality index (WQI). During pre-monsoon, 4% of groundwater samples were excellent, 65% were good; 26 % were poor; and 4% were unsuitable for domestic suitability, whereas in post-monsoon, 65% of water samples were good; 26% were poor; 4% were very poor and 4% were unsuitable for domestic suitability .Â Â Â Â
Curie depth and heat flow analysis of Ikot Ekpene and environs, Eastern Niger Delta Basin, using airborne magnetic data
Authors: Iduma Uche , Stephen Onyejiuwaka Stephen , Charity Nkiru Nwokeabia 
Published: February 2021

Aeromagnetic dataset over Ikot Ekpene and environs, Eastern Niger Delta Basin, was processed to compute the basement depth, Curie isotherm depth, geothermal gradient and heat flow within the area in order to investigate the depth to magnetic sources, geothermal prospect and the hydrocarbon potential of the place. The adopted computational method transformed the spatial data into frequency domain and provided a relationship between radially average power spectrum of the magnetic anomalies and the depths to respective sources.Â The results of the analysis showed that the depths to centroids and top boundaries range from 7.84 to 13.38 km and 0.233 to 0.459 km respectively. Curie depths within the basin undulate and vary between 15.42 and 26.49 km. The geothermal gradients range between 20.758 and 35.649 â°C/km while the corresponding heat flow is about 51.896 mWmâ»Â² within east of Ikono, north of Mbak and west of Abak Areas and 89.124 mWmâ»Â² within Amawum, Ndoro, Isiala, Ogbuebule and east of Uyo Areas. Based on the computed sedimentary thicknesses, high geothermal gradients and delineated major faults and fractures which could serve as migratory pathway for hydrocarbon or hydrothermal fluid, some parts of the study area have been demarcated for geothermal prospect and detail hydrocarbon exploration.Â Â
Orthonormal Bernstein polynomials for Volterra integral equations of the second kind
Authors: Biazar Jafar , Ebrahimi Hamed 
Published: February 2021

The purpose of this research is to provide an effective numerical method for solving linear Volterra integral equations of the second kind. The mathematical modeling of many phenomena in various branches of sciences lead into an integral equation. The proposed approach is based on the method of moments (Galerkin- Ritz) using orthonormal Bernstein polynomials. To solve a Volterra integral equation, the ap-proximation for a solution is considered as an expansion in terms of Bernstein orthonormal polynomials. Ultimately, the usefulness and extraordinary accuracy of the proposed approach will be verified by a few examples where the results are plotted in diagrams, Also the re-sults and relative errors are presented in some Tables.Â Â
Comparative study of efficacy of commercial anthelmintic response against gastrointestinal nematodes in goats of Jhenidah district, Bangladesh
Authors: Kumar Halder Prodip , Kumar Sarker Biplob , Shah Alam Md. , Nime Jannatun , Tareq Mussa Md. , Mostafijur Rahman Md. , Kumer Chakraborty Bipul , Harun-ur-Rashid SM. 
Published: February 2021

Background: Parasitic disease constitutes 60-70% diseases affecting the animals and has serious economic implication in livestock entrepreneurship by direct and indirect production loss. Indiscriminate use of anthelmintic drugs has made the situation even more precarious. A similar problem was encountered in goat from Holidhani, Jhenidah, where goats with complain of intermittent diarrhea and loss of body condition was reported despite of routine deworming.Objective:Â Determining the efficacy of conventional anthelmintics used and its comparison with some unexploited antiparasitic drugs for the same reason.Methods: Sixty-five goats were divided into five groups. Group A goats were kept as the control, Group B (I, II, III), group C (IV, V, VI), group D (VII, VIII, IX) and group E (X, XI, XII) goats were treated with levamisole, albendazole, fenbendazole and ivermectin respectively. All the treated and control goats were kept, housed for 21 days after the first treatment. Fecal samples were collected and counted on 1st, 7th, 14th and 21st day by using McMaster counting method.Results: Among the three doses of levamisole, albendazole, fenbendazole and ivermectin, the doses of 7.5, 7.5, 5.0 and 0.2 mg/kg body weight, body weight were found to be most effective against gastrointestinal nematodes in goats with a maximum reduction of fecal egg count to the extent of 95.38, 97.13, 98.08 & 99.16 percent respectively.Conclusion: The study revealed low efficacy of levamisole and hence ivermectin is a better drug than albendazole and fenbendazole to control gastrointestinal nematodes in goats.Â
Taurine represses oxidative stress in the liver and kidney following exposure to atrazine in Wistar rats
Authors: Kayode Afolabi Olusegun , Teslim Folarin Dasola , Olusola Aderibigbe Felix , Arinola Abimbola 
Published: February 2021

Background: Taurine is a conditional essential nutrient in man, with proven antioxidant property. This study was designed to evaluate the protective effects of taurine against atrazine (ATZ)-induced hepatic and renal oxidative toxicity in rats.Methods: Wistar rats were orally exposed to ATZ (1/10 LD50) alone or in combination with taurine at 1.5% w/v and 3% w/v in their drinking water for 30 days. After treatment, the liver and kidney were excised for biochemical assays by spectrophotometric methods.Results: Exposure to ATZ significantly elevated hepatic and renal malondialdehyde (MDA) levels when compared to control (p < 0.05). Advanced oxidized protein products (AOPP) were equally increased in these tissues on exposure to ATZ. In addition, reduced glutathione (GSH) and total antioxidant capacity (TAC) were markedly depleted in both organs on exposure to ATZ. Furthermore, activities of the antioxidant enzymes, superoxide dismutase (SOD) and catalase (CAT) were inhibited by ATZ compared to the control. However, co-treatment with taurine attenuated the oxidative responses generated by ATZ exposure in the rats, with the high dose of the amino acid normalizing most of the toxic effects.Conclusion: The study suggested that taurine can protect against ATZ-induced oxidative stress.Â Â Â
Conservation status of amniotes found in and around Balapur Pond of District Prayagraj (Uttar Pradesh), India
Authors: Kumar Verma Ashok 
Published: February 2021

Perennial Balapur Pond was surveyed and studied to assess the conservation status of reptiles, birds and mammals naturally occurring in and around it. The survey was conducted from January 2018 to June 2019. During entire survey, a total of 7 species of reptiles, 11 species of birds and 8 species of mammals were identified. Among reptilian species reported, 1 species comes under NT (near threatened), 1 species LC (least concern) while 5 species have no special status (NSS). One avian species was CR (critically endangered), one NT (near threatened) and 9 bird species were LC (least concern). Out of 8 mammalian species recorded, one was EN (endangered), one VU (vulnerable) and remaining 6 LC (least concern).Most of the avian and mammalian species are lacking conducive ambience and hunted for food.Â Â Â
Generating realistic Arabic handwriting dataset
Authors: I. Abdalla Mahmoud , A. Rashwan Mohsen , A. Elserafy Mohamed 
Published: February 2021

During the previous year's holistic approach showing satisfactory results to solve ‎the ‎problem of Arabic handwriting word recognition instead of word letters ‎‎segmentation.‎ ‎In this paper, we present an efficient system for ‎ generation realistic Arabic handwriting dataset from ASCII input ‎text. We carefully selected simple word list that contains most Arabic ‎letters normal and ligature connection cases. To improve the ‎performance of new letters reproduction we developed our ‎normalization method that adapt its clustering action according to ‎created Arabic letters families. We enhanced Gaussian Mixture ‎Model process to learn letters template by detecting the ‎number and position of Gaussian component by implementing ‎Ramer-Douglas-Peucker‎ algorithm which improve the new letters ‎shapes reproduced by using and Gaussian Mixture Regression. ‎‎We learn the translation distance between word-part to achieve ‎real handwriting word generation shape.‎ Using combination of LSTM and CTC layer as a recognizer to validate the ‎efficiency of our approach in generating new realistic Arabic handwriting words inherit user handwriting style as shown by the experimental results.‎
Implementation of innovative aeronautical communication, navigation and surveillance (CNS) systems
Authors: Stojce Ilcev Dimov 
Published: February 2021

This paper introduces implementation of innovative Satellite Communication, Navigation and Surveillance (CNS) systems in function of Global Satellite Augmentation System (GSAS) integrated by the current and new projected Regional Satellite Augmentation System (RSAS) worldwide. The satellite communication and navigation systems are presently in use, however the main aspect of any hypothetical RSAS network is implementation of satellite surveillance system employing previous and new CNS solutions for improved Air Traffic Control (ATC) and Air Traffic Management (ATM) in all phases of flight, approaching to airports and during landing. The CNS network also enhances safety and emergency systems, transport security and control of transportation freight, logistics and the security of the crew and passengers onboard aircraft. The proposals for modern multifunctional space segment, DVB-RCS network, RSAS infrastructure, Satellite Automatic Dependent Surveillance-Broadcast SADS-B system for surveillance and movement guidance and control are also discussed as special solutions in airports environments.Â Â Â
Simulation of a stochastic multi-echelon distribution supply chain under a continuous inventory control policy
Authors: Ech-cheikh Hamid , Douraid Abdessamad , El Had Khalid 
Published: February 2021

Multi Echelon Distribution System (MEDS) is a multifaceted system focusing on integration of all factors involved in the entire distribution process of finished goods to customers. This paper proposes a simulation framework at the operational level of MEDS. The proposed model includes three echelons, based on discrete-event simulation approach, where the performed operations within our system are depending on several key variables that often seem to have strong interrelationships. It is necessary to simulate such complicated system, in order to understand the whole mechanism, to analyze the interactions between various components and eventually to provide information without decomposing the system. The simulation framework is used to evaluate the performance of the considered system at initial conditions and to compare it with different scenarios generated by simulation running. The study concludes with an analysis of system performance and the finding results according to each scenario.Â Â Â
The characteristics of current patterns in the waters of port of Tanjung Emas Semarang
Authors: . Hartanto , Tjahjono Agust , Sugiharto Rudy 
Published: February 2021

The Port of Tanjung Emas Semarang is located in the northern of Java which is regarded as a strategic position to support sea transportation connectivity to Kalimantan. Conducted at the Port of Tanjung Emas Semarang, this research applied exploratory descriptive as the research methodology. Measurements of this research were made by using ADCP (Acoustic Doppler Current meter Profiler) type of Multi Cell Argounaut-XR. The research was carried out in 3 days (January 16th, 2016 â€“ January 19th, 2016). Current velocity data were taken at Â± 7 meters depth in five depth strata. The research was aimed to measure the current pattern and distribution of ballast water discharges from commercial vessels at the port. Based on the research, it was found that the current velocity of all water columns in the port varied ranging from 0.042-0.124 m/s with minimum current velocity of 0.0â€“0.003 m/s and maximum current velocity of 0.139-0.452 m/s. It was also found that the dominant current direction was north and south. It was predicted that the distribution of the ballast water discharges during falling tide (the tide went from high to low) moved from south to north, heading the port exit. In contrast, during rising tide (the tide went from low to high), the distribution of the ballast water discharges moved from north to south, heading the estuary of Baru river.Â Â
Design and fabrication of high productive barbecue machine
Authors: Ghani Usman , Hayat Mubashir , Habib Tufail , Zeb Alam , Azam Khizar 
Published: February 2021

Conventional methods to use a metal cavity having charcoal assisted with skewers in getting the final barbecue encounter a lot of limitations such as time, lower productivity, single temperature heating, worker fatigue, controlling of heat and time, energy consumption, importability, unhygienic food preparation (road-side open barbecuing) and cost-effectiveness etc. The proposed research considers the design and fabrication of barbecue machine fueled with gas and actuated by electrical cum mechanical systems. This electromechanical semi-automatic barbecue machine overcomes the stated limitations. It will be an important tool used for household as well as commercial use. This machine capacity is to barbecue an average of 4.5 kg of meat at a time. The machine is divided into three chambers. In first chamber barbecue is kept on lower temperature for high time. Once it completes its first stage motor attached with chain drive mechanism is activated and it brings the food to second chamber. In the second chamber, it takes lower time on high temperature and when it finishes it is conveyed to first chamber for un-feeding. The aim of this research is also to commercialize the product in the market targeting small scale industries and people involved in road side barbecue production, restaurants and other organizations.Â Â
Improvement of cost performance accompanied by quality control using value engineering and six sigma methods in high-rise building project
Authors: Rochman Khairul , Susetyo Budi 
Published: February 2021

Construction projects are unique, complex, and have high risks, thereby increasing priorities. The application of the concept of mega con-struction with the risk of increasing costs needs to be eliminated by the value engineering and quality control methods. Re-analyzing a de-velopment plan is an option to save costs, but still in accordance with applicable specifications and conditions. Quality control with the six sigma method can be defined as relating to systemic and systematic to identify and eliminate waste or activities that are not added activities that do not add value, radical continuous improvement to achieve six sigma performance levels, by flowing products (material, work-in-process, output) and information using a Pull system from internal and external users to achieve goals and perfection with only produce a small amount for every one million opportunity or operation. The results of the case study conducted on the upper structure work (column and beam) based on the design value of the multi-storey building obtained a cost efficiency of 9.27% and 3.19% of the initial cost design. Whereas the implementation of six sigma is used to reduce work defects from excessive targets and low worker skills. NCR from this high-rise building project, obtained a value of 39 defects, with a Disability Per Million Opportunity value of 3.125 DPMO, which after being converted to a sigma table, is included in the 4.23 sigma category and a DMAIC (Define-Measure-Analyze-Improve-Control) in order to maintain quality and reduce defects resulting from upper structure work.Â Â
Cybersecurity capability maturity models review and application domain
Authors: Abdullahi Garba Adamu , Musa Bade Aliyu , Yahuza Muktar , Nuhu Yaâ€™u 
Published: February 2021

Cybersecurity is a way of protecting organization critical assets, through the identification of cyber threats that can compromise the information stored, it involves the protection, identification, and responding to threats. The main aim of this article is to conduct an ample review of the published cybersecurity capability maturity models using a systematic review of published articles from 2014 to 2019. Features of Hal- vorsen and Conradiâ€™s taxonomy were adopted to explain the models identified. The results indicated adopting a model to a certain organization is not feasible. However, modification is required before implementation, as the cost of implementation is not available when conducting this research.Â Â
Key factors of success in the application of last planner system in construction work
Authors: Mandala Andrean , Widyaningsih Nunung , Purwoko Kusumo Bintoro Bambang 
Published: February 2021

This study aims to identify what factors are the key to the successful implementation of the Last Planner System in construction work based on existing journals to be applied in the construction environment and determine the priority weight / key factors of success from the questionnaire results from experts with the Analytic method Hierarchy Process. The method used in this study uses the Analytic Hierarchy Process to find priority weights and software uses Expert Choice. From the results of the analysis obtained Key Success Factors in construction work, namely as many as 10 criteria where stakeholder criteria with the highest priority weight with a global weight of 0.2279 which have a value of consistency ratio below 0.1 or 10%, ie 0.08 or 8%, then an evaluation of the comparison pairing between criteria is consistent and as many as 24 sub-criteria where the sub-criteria of stakeholder support for the implementation of LPS with the highest priority weighting with a global weight of 0.1812 which has a consistency ratio below 0.1 or 10% ie 0.07 or 7%, then an assessment of pairwise comparisons between sub criteria are consistent.Â Â
Case study of liquid suction heat exchanger in a mechanical refrigeration system using alternative refrigerants
Authors: Ahmed Mahmood Raid 
Published: February 2021

This paper investigates the effect of adding a liquid-suction heat exchanger on the performance of a mechanical refrigeration system using alternative refrigerants. Engineering Equation Solver (EES) was used to simulate a mechanical refrigeration system in two configurations: modified system with liquid-suction heat exchanger and system without liquid-suction heat exchanger. The results revealed that the liquid-suction heat exchanger has a significant effect on the system performance as it influences the subcooling and superheating temperatures. The results also showed that the highest value of the coefficient of performance (COP) was achieved by the modified system with refrigerant type R134a, COP was about 7% and 12% higher than that of refrigerants R600a and R22 respectively. It also presented that R600a has high response to increase the refrigerant effect when the liquid-suction heat exchanger is used. R600a is good alternative refrigerant and it can be used in the mechanical refrigeration system, but its COP is lower than that of R134a.Â Â
Osteopoikilosis: Rare case with incidental radiographic findings
Authors: Azarfar Azin , Taj Hiffsa , Seifert Michael 
Published: February 2021

We report a case of benign, autosomal dominant, sclerosing dysplasia of bone in a 41-year-old man. This is a very rare disorder character-ized by numerous, symmetric, homogenous bone islands. The disease is mainly asymptomatic and requires no treatment.Â Â
Theoretical investigation of acoustic wave velocity of aluminum phosphide under pressure
Authors: Daoud Salah , Latreche Abdelhakim , Kumar Saini Pawan 
Published: February 2021

The bulk and surface acoustic wave velocities of Aluminum phosphide (AlP) semiconducting material under pressure up to 9.5 GPa were studied. The structural parameters and the elastic constants used in this work are taken from our previous paper published in J. Optoelec-tron. Adv. M. 16, 207 (2014). The results obtained at zero-pressure are analyzed and compared with other data of the literature. In addition, the acoustic GrÃ¼neisen parameter and the Vickers and Knoop microhardness are predicted and analyzed in detail. Our calculated results are in good agreement with the experimental and other theoretical data of literature.Â Â Â