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  Subjects -> ENGINEERING (Total: 2383 journals)
    - CHEMICAL ENGINEERING (204 journals)
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    - ENGINEERING (1248 journals)
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ENGINEERING (1248 journals)                  1 2 3 4 5 6 7 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 8)
3D Research     Hybrid Journal   (Followers: 20)
AAPG Bulletin     Hybrid Journal   (Followers: 8)
AASRI Procedia     Open Access   (Followers: 14)
Abstract and Applied Analysis     Open Access   (Followers: 3)
Aceh International Journal of Science and Technology     Open Access   (Followers: 2)
ACS Nano     Full-text available via subscription   (Followers: 275)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 3)
Acta Scientiarum. Technology     Open Access   (Followers: 3)
Acta Universitatis Cibiniensis. Technical Series     Open Access  
Active and Passive Electronic Components     Open Access   (Followers: 7)
Adaptive Behavior     Hybrid Journal   (Followers: 11)
Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi     Open Access  
Adsorption     Hybrid Journal   (Followers: 4)
Advanced Engineering Forum     Full-text available via subscription   (Followers: 7)
Advanced Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 5)
Advanced Science Letters     Full-text available via subscription   (Followers: 10)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 7)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 18)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Engineering Software     Hybrid Journal   (Followers: 27)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 15)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 13)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 21)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 23)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 29)
Advances in Operations Research     Open Access   (Followers: 12)
Advances in OptoElectronics     Open Access   (Followers: 5)
Advances in Physics Theories and Applications     Open Access   (Followers: 13)
Advances in Polymer Science     Hybrid Journal   (Followers: 43)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Remote Sensing     Open Access   (Followers: 44)
Advances in Science and Research (ASR)     Open Access   (Followers: 5)
Aerobiologia     Hybrid Journal   (Followers: 3)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 6)
AIChE Journal     Hybrid Journal   (Followers: 35)
Ain Shams Engineering Journal     Open Access   (Followers: 5)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access   (Followers: 1)
Alexandria Engineering Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 26)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 10)
American Journal of Engineering Education     Open Access   (Followers: 9)
American Journal of Environmental Engineering     Open Access   (Followers: 16)
American Journal of Industrial and Business Management     Open Access   (Followers: 23)
Analele Universitatii Ovidius Constanta - Seria Chimie     Open Access  
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of Regional Science     Hybrid Journal   (Followers: 7)
Annals of Science     Hybrid Journal   (Followers: 7)
Antarctic Science     Hybrid Journal   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applicable Analysis: An International Journal     Hybrid Journal   (Followers: 1)
Applied Catalysis A: General     Hybrid Journal   (Followers: 6)
Applied Catalysis B: Environmental     Hybrid Journal   (Followers: 18)
Applied Clay Science     Hybrid Journal   (Followers: 6)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 11)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4)
Applied Nanoscience     Open Access   (Followers: 8)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 5)
Applied Sciences     Open Access   (Followers: 3)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 8)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Engineering Review     Open Access  
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 1)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 8)
Asian Journal of Control     Hybrid Journal  
Asian Journal of Current Engineering & Maths     Open Access  
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 8)
Assembly Automation     Hybrid Journal   (Followers: 2)
at - Automatisierungstechnik     Hybrid Journal   (Followers: 1)
ATZagenda     Hybrid Journal  
ATZextra worldwide     Hybrid Journal  
Australasian Physical & Engineering Sciences in Medicine     Hybrid Journal   (Followers: 1)
Australian Journal of Multi-Disciplinary Engineering     Full-text available via subscription   (Followers: 2)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Avances en Ciencias e Ingeniería     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
Bangladesh Journal of Scientific and Industrial Research     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
Batteries     Open Access   (Followers: 6)
Bautechnik     Hybrid Journal   (Followers: 1)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 26)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
BER : Manufacturing Survey : Full Survey     Full-text available via subscription   (Followers: 1)
BER : Motor Trade Survey     Full-text available via subscription  
BER : Retail Sector Survey     Full-text available via subscription   (Followers: 1)
BER : Retail Survey : Full Survey     Full-text available via subscription   (Followers: 1)
BER : Survey of Business Conditions in Manufacturing : An Executive Summary     Full-text available via subscription   (Followers: 2)
BER : Survey of Business Conditions in Retail : An Executive Summary     Full-text available via subscription   (Followers: 3)
Beyond : Undergraduate Research Journal     Open Access  
Bhakti Persada : Jurnal Aplikasi IPTEKS     Open Access  
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Biofuels Engineering     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 10)
Biomedical Engineering     Hybrid Journal   (Followers: 15)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 13)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 21)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 37)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 5)
Biomedical Microdevices     Hybrid Journal   (Followers: 9)
Biomedical Science and Engineering     Open Access   (Followers: 4)
Biomedizinische Technik - Biomedical Engineering     Hybrid Journal  
Biomicrofluidics     Open Access   (Followers: 4)
BioNanoMaterials     Hybrid Journal   (Followers: 2)
Biotechnology Progress     Hybrid Journal   (Followers: 39)
Boletin Cientifico Tecnico INIMET     Open Access  
Botswana Journal of Technology     Full-text available via subscription   (Followers: 1)
Boundary Value Problems     Open Access   (Followers: 1)
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 13)
Bulletin of Engineering Geology and the Environment     Hybrid Journal   (Followers: 14)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers, Droit, Sciences et Technologies     Open Access  
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 31)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 42)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 6)
Case Studies in Thermal Engineering     Open Access   (Followers: 5)
Catalysis Communications     Hybrid Journal   (Followers: 6)
Catalysis Letters     Hybrid Journal   (Followers: 2)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 7)
Catalysis Science and Technology     Free   (Followers: 8)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 7)
CEAS Space Journal     Hybrid Journal   (Followers: 2)
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 3)
Central European Journal of Engineering     Hybrid Journal  
CFD Letters     Open Access   (Followers: 6)
Chaos : An Interdisciplinary Journal of Nonlinear Science     Hybrid Journal   (Followers: 2)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Engineering     Open Access   (Followers: 2)
Chinese Science Bulletin     Open Access   (Followers: 1)
Ciencia e Ingenieria Neogranadina     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencias Holguin     Open Access   (Followers: 3)
CienciaUAT     Open Access   (Followers: 1)
Cientifica     Open Access  
CIRP Annals - Manufacturing Technology     Full-text available via subscription   (Followers: 11)
CIRP Journal of Manufacturing Science and Technology     Full-text available via subscription   (Followers: 13)
City, Culture and Society     Hybrid Journal   (Followers: 21)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Clean Air Journal     Full-text available via subscription   (Followers: 1)
Clinical Science     Full-text available via subscription   (Followers: 9)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Coastal Engineering     Hybrid Journal   (Followers: 11)
Coastal Engineering Journal     Hybrid Journal   (Followers: 6)
Coatings     Open Access   (Followers: 4)
Cogent Engineering     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Color Research & Application     Hybrid Journal   (Followers: 2)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 14)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 13)
Communications Engineer     Hybrid Journal   (Followers: 1)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 28)
Composite Interfaces     Hybrid Journal   (Followers: 7)
Composite Structures     Hybrid Journal   (Followers: 278)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 212)
Composites Part B : Engineering     Hybrid Journal   (Followers: 248)
Composites Science and Technology     Hybrid Journal   (Followers: 186)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access  
Computational Geosciences     Hybrid Journal   (Followers: 15)
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 8)
Computer Science and Engineering     Open Access   (Followers: 19)
Computers & Geosciences     Hybrid Journal   (Followers: 31)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 8)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 5)
Computers and Geotechnics     Hybrid Journal   (Followers: 11)
Computing and Visualization in Science     Hybrid Journal   (Followers: 6)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 33)
Conciencia Tecnologica     Open Access  
Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 8)
Control and Dynamic Systems     Full-text available via subscription   (Followers: 9)
Control Engineering Practice     Hybrid Journal   (Followers: 43)

        1 2 3 4 5 6 7 | Last

Journal Cover American Journal of Applied Sciences
  [SJR: 0.254]   [H-I: 28]   [26 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Print) 1546-9239 - ISSN (Online) 1554-3641
   Published by Science Publications Homepage  [31 journals]
  • Zinc Composition and its Effect on Magnetic Properties of Nickel-Zinc
           Ferrite Prepared Via Sol-gel Technique

    • Abstract: Nickel-Zinc (Ni-Zn) ferrite (Ni1-xZnxFe2O4) with different Zinc composition (x = 0, 0.25, 0.50, 0.75 and 1.0) were prepared and synthesized by applying sol-gel technique and the morphological characterization is done by X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) to confirm the formation of Ni-Zn ferrite nanoparticle and estimate the particle sizes. Magnetic study was also performed using Vibrating Sample Magnetometer (VSM). Results showed that Zn composition when x = 0.5 possesses the highest magnetization which is 52.6 emu/g.
  • A Survey of Graph Based Complex Brain Network Analysis Using Functional
           and Diffusional MRI

    • Abstract: The brain network is the function of a structurally and functionally organized complex system. Its structure and activity analysis is one of the most significant challenges. The graph based techniques of brain complex networks have been successfully used in various types of image and medical data analysis. In this survey paper, we focus on a comprehensive study of the analytical methods for complex brain network based on graph theory. This review paper is intended to provide automated brain disease diagnosis based on functional and diffusional MRI modalities. Furthermore, we discuss subjective and objective quality evaluations of complex brain networks, important tools for automated brain disease diagnosis, challenging issues and future research directions in this increasingly evolving research field.
  • The Role of Gesture in the Second Language Learning and Teaching

    • Abstract: This paper outlines the crucial role of gesture in the second Language (L2) learning and teaching. Many studies showed that gesture is a key factor in the second language acquisition since it can help to convey meaning, to compensate for speech difficulties and to enhance memory compared to pure verbal learning. The presence of gestures with a verbal message in L2 learning brings a positive outcome to both speakers and listeners. Studies showed that gestures not only facilitate L2 learners in second language listening comprehension, but also have a crucial impact on the L2 word learning. Also, gestures are used as effective teaching strategies in L2 teaching and classroom management. Thus, gesture as a facilitating educational tool in second language learning deserves both L2 learner and teacher’s further attentions.
  • Cooperation in Rural Areas as a Local System Development Opportunity

    • Abstract: The development of rural areas requires the adoption of technology innovation and market approach strategies without departing from the specific features of local production systems, such as agricultural practices and the wealth of knowledge of operators. It is even better the exploitation of these resources to characterize the competitive positioning of territorial systems. In this framework, the cooperative Rinascita, which works in an internal rural area of Sicily region (Southern Italy), represents an attempt to maintain agricultural activities, traditions and rural culture as well as to promote and contribute to the development of the area by giving value to and promoting, a typical local production: the “pomodoro siccagno”. Such type of tomato, not a very remunerative kind of product, is grown in areas where alternative crops are few or not available. The aim of the paper is to investigate, through the empirical analysis of a case study, on the capacity of the agricultural cooperative sector to undertake innovative processes and to activate multiplicative processes of local development. The importance of the cooperative Rinascita is real and outstanding: despite being still quite modest in terms of quantity of processed tomato and turnover, it has allowed the members of the cooperative to process and directly sell their tomato, freeing themselves from commercial intermediaries operating in the area.
  • Application of Homotopy Perturbation Method for SIR Model with Vital
           Dynamics and Constant Population

    • Abstract: In this work, we have studied Susceptible-Infected-Recovered (SIR) model with vital dynamics and constant population, which is used as a mathematical models in many physically significant fields of applied science. The Homotopy Perturbation Method (HPM) and Runge-Kutta method (RK) have been used for solving the SIR model with vital dynamics and constant population. The convergence of HPM has been studied. Also, we have tested the HPM on solving different implementations which are show the efficiency and accuracy of the method. The approximated solutions of HPM for the tested problems are agree well with the numerical solutions of Runge-Kutta method.
  • The Path from Values to Value: A Case StudyWithin thePublic Sector

    • Abstract: The paper investigates the driving role of Intellectual Capital (IC), which is emerging from the ongoing change in the managerial approach in the Italian public sector. Drawing upon data collected from a case study regarding a local transport public utility, we intend to analyze the virtuous path that leads from values to value, focusing attention on the centrality of the soft dimension of human behavior (values) in improving the organization’s performance (value). The case study allowed us to highlight how, in a few years, it was possible to design and implement a strategic plan, based on the three pillars of IC – human, structural and relational capital. Before managerial change, the public utility investigated was characterized by a deep lack of awareness of its intrinsic capability to face the challenge coming from the request for rationality, which is at present determining the new scenario in the entire public sector. Our research offers a contribution to the debate on the relevance of Intellectual Capital in the public sector, giving evidence of good practices that can be developed in other similar contexts and supporting a theoretical background with further advancement in managerial tools. We have also identified the relevant role of the system of internal control and the implications of that system in the accountability path.
  • The SEIR Dynamical Transmission Model of Dengue Disease with and Without
           the Vertical Transmission of the Virus

    • Abstract: The transmission of dengue disease when there is a possibility of Vertical Transmission (VT) is studied using mathematical modeling. In the normal case, the mosquito is infected by the dengue virus when it bites an infectious human being. Evidence is gathering that the mosquitoes can also be infected through sexual contact with infected male mosquito. To see the possible consequence of having this addition mode of transmission, a SEIR, Susceptible-Exposed-Infected-Recovery, model is constructed. The Routh – Hurwitz criteria are applied to the model in order to establish the stability of the infection. It is seen that the model without the VT model has 2 equilibrium points, a disease free equilibrium point and an endemic equilibrium point, while the model with the VT has only an endemic equilibrium point. The numerical solutions of differential equations of the model without the VT mode exhibit dynamical behaviors that converges to the disease free equilibrium state when basic reproduction time R0 is less than 1 and converges to endemic equilibrium state when R0>1. The trajectories of the numerical solutions for all possibilities (with and without VT mode) projected onto various 2D planes and 3D spaces are presented.
  • Enzymatic Kinetics of Fatty Acids Methyl Ester from Kapok Seed Oil (Ceiba
           Petandra) Using Lipozyme TL IM

    • Abstract: Synthesis of Fatty Acids Methyl Ester (FAME) utilizing oil extracted from kapok seeds (Ceiba petandra) and catalyzed by lipozyme TL. 1M via enzymatic kinetics transesterification was succesfully conducted A mixture of different FAME, widely known as biodiesel is one of the sources of renewable energy. A kinetic analysis was investigated to identify the reaction model and the rate equation and to calculate kinetic parameters. The result obtained showed that the enzymatic kinetics followed a Michaelis-Menten model. The transesterification kinetic followed the Ping-pong Bi-Bi mechanism characterized by the υmax, Km(KO), Km(Met) values of 3.06×10-5 mmol/ catalyst, 0.95×102 ppm, 1.30×102 ppm, respectively.
  • Social Impact as an Intangible Driver in Assessing Economic Value: An
           Application to the Italian Third Sector

    • Abstract: Many studies have focused on Intellectual Capital (IC) applied to the Third Sector in the past few years. Despite the growing interest in intellectual capital in the field, the concept remains unclear.  Few scholars and practitioners deal with the subject, however, as far as we know there are no studies that show the relationship between social impact generated by non-profit organizations and IC. This is the first study to be focused on this topic. This paper aims to fill the gap in the literature and demonstrate the relation between social impact and IC in the Social Work Integration Cooperatives (SWICs). This paper contributes to the literature by theoretically arguing that the measurement of social value improves SWICs’ economic value as a consequence of improvements of relationships and trust with external stakeholders (intangible assets). To ground our theoretical hypothesis, we measure the social impact value achieved by Italian SWICs through an aggregate analysis.  That is the starting point and the findings can generate further research from both non-profit practitioners and scholars through the measurement of hypotheses over time.
  • Sustainability Reporting as a Tool to Improve Transparency towards
           Stakeholders. Exploring Reporting Practices in the Imaging Industry

    • Abstract: The complexity that characterizes the international competitive system has enhanced the call for transparent reporting and the dissemination of information concerning social and environmental impact being implemented by firm. Recently, Life Cycle Assessment (LCA) methodology was developed in order to respond to the specific needs to measure the environmental impact of firm’s products and processes in terms of resources consumption and pollution along their entire life cycle. This study can contribute to strengthening of the understanding, to promote discussion on the current state of the art of sustainability reports and to verify the development of the tools of corporate sustainability management to assess the environmental and social impact, in particular in the imaging industry. The paper proceeds as follows. First, it examines the literature on the sustainability reporting, corporate reputation as an intangible asset. Second, after the literature review it provides a descriptive and critical knowledge linking LCA, corporate reputation and sustainability reporting. Finally, the attention will be focused on the analysis of Canon, Epson, Nikon and Sony’s sustainability reports in order to better understand if sustainability reporting tools based on LCA approach are useful to improve transparency towards stakeholders and if these tools are suitable to generate value and improve corporate reputation. Conclusions and implications for further research will end the paper.
  • Petrography and Geochemistry of Orin-Ekiti Basement Rocks, Southwestern
           Nigeria: Implications on Bauxitization

    • Abstract: The petrography and geochemistry of Orin-Ekiti Basement rocks were evaluated to determine their mineralogical and chemical composition, assessed their petrogenesis and susceptibility to the formation of bauxitic clay. Ten representative rock samples were selected for thin section petrography and bulk rock geochemical analysis using Petrographic microscope and XRF, Rh Tube, 3k Watt respectively. Field observations revealed charnockites as the dominant rock in the study area with other lithotypes including granite, granite gneiss and banded gneiss. Optical examinations indicated the dominance of quartz in all the rocks suggesting the rocks are product of acidic magma. The order of oxides concentration (wt%) is SiO2>Al2O3>Fe2O3>CaO>K2O>MgO>Na2O>TiO2>P2O5. Based on silica content only, the rocks in this study are classified as felsic (granite, granite gneiss and banded gneiss) with SiO2>65% and ultramafic (charnockites) with SiO2<45%. Charnockites with low SiO2, high Al2O3 and TiO2 compared to other rocks in the study area is considered more favourable to form bauxite. The rocks in the study area are classified into calcic-alkali and calcic groups with igneous protolith.
  • Recycle of Plastic Bag Wastes with Organic Wastes to Energy for RDF

    • Abstract: This paper studies the utilization potential of Refuse Derived Fuel (RDF) approach to recover the discarded plastics from Hatyai solid waste disposal site in Songkhla province, Thailand. The excavated plastic bag wastes from the closure landfill of Hatyai, unused plastic bag wastes and waste residues are the raw materials for RDF productions. The raw materials are characterized for proximate analysis and ultimate analysis. The RDF5 (Densified RDF) with different raw materials are produced and characterized in this study. All raw materials have low moisture content, high volatile solids, low ash content and low fixed carbon. Thus, these raw materials are suitable for RDF productions. Due to low sulfur content, the combustion of these RDFs has no risk for the global warming and acid rain cause. The various RDFs in this study include a plastic bag wastes-palm fronds-RDF (PP-RDF), an unused plastic bag wastes-palm fronds-RDF (UPP-RDF), a plastic bag wastes-palm fronds-cassava peels-RDF (PPCRDF) and a plastic bag wastes-palm leaves-rubber wastes-RDF (PPRRDF). The various RDFs are provided the good physical and chemical properties. The higher heating value (HHV) of PP-RDF, UPP-RDF, PPCRDF and PPR-RDF is 5,725, 5,674, 5,548 and 5,872 kcal/kg, respectively. The HHV of various RDFs is higher than the HHV criterion for RDF in the briquette form. Therefore, the plastic-wastes RDF has the potential for energy as solid fuels for kiln. According to this study, the plastic-bagwastes RDF in the briquette form is suitable for renewable energy.
  • Introduction to Fundamental Concepts of Spectroscopy Using the Lhires III

    • Abstract: This article proposes and analyzes the use of the high-resolution Lhires III spectrograph as a pedagogical tool for teaching-learning concepts of optical spectroscopy. A methodology was developed and it was tested in a population of 20 students from different engineering programs at the Technological University of Pereira, Colombia. The methodology was implemented through a guide, which describes the 3 experiments that are part of the methodological proposal. Upon completion of the guide, students were asked to respond to a test. The Hake gain coefficient was used to measure the learning evolution of students and verify the methodology proposed in this study. 85% of the students affirmed they would like to explore in more depth the concepts of spectroscopy. Although more analysis may be required to verify the findings, these preliminary results show the experiments carried out with the Lhires III allow students to strengthen knowledge acquired in the classroom, fostering interest in science both at high school and university levels.
  • A Front-End User Interface Layer Framework for Reactive Web Applications

    • Abstract: Nowadays, people are relying more and more on web applications, such as Gmails, Google Map and Google Docs to complete their daily tasks. However, web applications often fail to provide reactive interactions with users. This paper explores the issues and problems of current web application frameworks and narrowed the research to the User Interface (UI) layer as it is the most important component to focus on in terms of increasing web application reactiveness. By integrating two Javascript libraries, namely, Preact and Preact-router into the UI layer, the proposed approach optimizes the way how the web server and web client communicates, which leads to a more reactive web application. The proposed UI layer framework was tested against a current framework and found that the proposed framework reduced a significant amount of page load time. In addition, number of requests sent to a web server was also reduced compared to the current framework. The proposed UI layer framework can be applied to business web applications to increase their applications load time and reactiveness. By making their web applications more reactive, it would potentially have a positive impact on the conversion rates of their businesses.
  • Thermal Stability Analysis in a Two-Step Reactive Cylindrical Stockpile

    • Abstract: Thermal stability analysis in a cylindrical stockpile of reactive material undergoing a two-step low-temperature oxidation reaction is studied in this article. The reactant consumption in this case is neglected and heat transfer with thermal stability are investigated by application of the energy equation. The complicated combustion process results with nonlinear interactions and hence the nonlinear partial differential equation governing the problem is tackled numerically using the semi-implicit Finite Difference Method (FDM). Kinetic parameters embedded on the governing partial differential equation, are varied to study the behavior of the temperature during the combustion process. The results are depicted graphically and adequately discussed, to bring an understanding of heat transfer and thermal stability during the combustion process. The study in this paper is relevant to multistep combustion process analogous to the fuel combustion in automobiles. The results, in general, show that thermal stability is more for sensitized chemical kinetics than for bimolecular type of kinetics.
  • Biochar Types from Latrine Waste and Sewage Sludge Differ in
           Physico-Chemical Properties and Cadmium Adsorption

    • Abstract: Pyrolysis of latrine fecal waste could produce valuable products for minimizing environmental contamination with heavy metals. The objective of this study was to determine yields, characteristics and cadmium (Cd) sorption of biochar from latrine fecal waste and sewage sludge, as affected by pyrolysis temperature. Slow pyrolysis at 350, 550 and 650°C, was used to produce the biochar. In addition to proximate and ultimate analysis, surface area, porosity and functional groups were analyzed. A batch sorption study was conducted to determine the cadmium sorption capacity of the biochar. Biochar from latrine waste had higher yield, ash content, surface area and pore volume and lower total and fixed carbon (C) and volatile matter than from sewage sludge. Yield, volatile matter, total C, nitrogen (N) and hydrogen (H) decreased with pyrolysis temperature, while ash content, surface area and porosity increased. Surface functional groups of the biochar also varied with feedstock and pyrolysis temperature. The Cd sorption capacities were higher for biochar from latrine waste than from sewage sludge. The findings indicated that characteristics of biochar from latrine waste differ from that of sewage sludge origin and has greater potential as an adsorbent for removal of Cd from wastewater.
  • Production of High-Performance Silica Fume Concrete

    • Abstract: This research aimed to produce concrete that will decrease disadvantages of portland concrete and resolve it. Mixture of Silica fume with concrete in this paper shows that the strength and hardness are increased. In this research the main gools is to compare the deference of compressive strength between standred concrete and concrete with silica fume with different additives ratio and to explore its effect on the main physical properiets of concrete. To achieve our goals in this research about 180 samples prepared to examened it’s compressive strength, all concrete sample has the same mixing ratio and distributing to standard  and Silica fume added by the volume (5, 10, 15, 20 and 30%). The results show that the recommended addition was 15% of Silica fumes for optimum compressive strength that reaches 74.8 MPa. Also the economy of mixture compare to the market prices makes silica excellent to use as addition filler to concrete.
  • Construction and Application of a Statistical Test for Coefficient of
           Variation on Normal Distributions

    • Abstract: In this study a novel statistical test is derived for the Coefficient of Variation (CV) under normal distributions. This is a newly derived test with value to engineering sciences in aspects of production of accurate items. The CV can measure the precision of a measuring instrument, among other applications. In order to determine instrument reliability, start by generating measures using the instrument. The CV is then calculated to determine if the measures generated by the instrument are concentrated around a central point. In use of normal distribution presumption, or approximation, applicable properties of the normal distributions lead to involvement of the chi-square and t-distributions. A CV test is then constructed, and two illustrative examples conclude the discussion.
  • A Review: Biodegradation and Applications of Keratin Degrading
           Microorganisms and Keratinolytic Enzymes, Focusing on Thermophiles and
           Thermostable Serine Proteases

    • Abstract: Keratins are hard-degrading fibrous proteins, insoluble in water and organic solvents, often accumulated in nature and major components in feathers, skins, hair, horn, nail, hoof etc., Keratin-degrading microorganisms such as bacteria, archaea, actinomycetes and fungi employ keratinases to attack keratin. Keratinases belonging to subtilisin-like serine proteases were classified based on similarity of amino acid sequences. Keratinolytic thermophilic or hyperthermophilic bacteria and archaea have been known to degrade keratin at ≥70°C. General properties of thermozymes such as stability to heat and resistance to denaturing conditions; e.g., solvents and detergents have drawn attention to various biotechnological industries. Some bacterial and archaeal keratinases degrade not only fibrous keratin but also digest recalcitrant prion proteins, an etiologic agent of spongiform encephalopathies of brain and nervous system. Keratin and keratinase have a number of applications in various sectors, i.e., biotechnology, cosmetic and pharmaceutical industries, medical therapy and waste management. On the other hand, accumulation of excess amount of keratin is recognized as solid waste and troublesome environmental pollutant. Biodegradation involving either keratinolytic thermophiles or thermostable keratinases not only improve digestibility and nutritive values of keratinous meals (for mixers in animal feed stuffs), but also minimize risk from infection and microbial toxin transmitted to livestock.
  • Performance Evaluation of Blackhole Attack on AODV in VANET

    • Abstract: Black hole is one of theongoing network threats that impact the physical components of Vehicular Ad hocNetworks (VANETs) when more layers deal with routing mechanism of vehicular adhoc network. An algorithm for Ad hoc On-Demand Distance Vector (AODV) protocolin VANET was developed in order to identify collaborative group of nodes thatbehave as black hole. The simulation wasconfigured to perform three scenarios with number of nodes set to 10, 20 and 40nodes respectively. The result showed that the proposed algorithm provides abetter throughput performance, less end to end delay, high packet deliveryration, less packet drops and less time for processing the incoming andoutgoing nodes. Future works may consider testing the proposed solution onother types of attacks such as Wormhole, Jellyfish and Sybil attacks.
  • Effect of GA3 and Shading on the Growth and Content of Artemisinin
           Compound in Leaf of Artemisia (Artemisia annua L.) Grown on the Medium
           Land of Karanganyar, Indonesia

    • Abstract: Malaria is still becomes a concern for the government of Indonesia, since this disease has affected many people. Artemisia annua L. is an aromatic plant that destroys malarial parasites, lowers fever and of which the secondary metabolite is artemisinin. Enhanced production of the artemisinin content in the whole plant is desirable. This experiment was conducted in Karanganyar, Indonesia 900m asl. The purpose of this field experiment was to investigate the effects of GA3 and shading on the growth and content of artemisinin of Artemisia. Experiment using Completely Randomized Block Design (CRBD) arranged in factorial treatments. The first factor was the concentration of GA3 consists of 4 levels, namely: G0 (without GA3), G1 (50 ppm GA3), G2 (100 ppm GA3) and G3 (150 ppm GA3). The second factor was the level of shade, which consists of three levels, namely: N0 (without shade), N1 (55% shade) and N2 (75% shade). The results showed that: 100 ppm GA3 increased plant dry weight, chlorophyll content and yield of total extract. A treatment without shade gives the best results on the height of plant, length of root, fresh weight of plant, dry weight of plant and yield of total extract. Treatment of 150 ppm of GA3 and 75% shade gave the highest content of artemisinin (3.96%) while control provided 0.64%.
  • Factors Affecting Sustainable Development of Agricultural Cooperatives in
           the Mekong River Delta, Vietnam

    • Abstract: The objective of the article is to identify factors that impact on sustainable development of the Mekong River Delta agricultural cooperatives. The article uses multivariable regression to find the factors affecting the business performance of cooperatives through the survey of 80 agricultural cooperatives in three provinces of TraVinh, Ben Tre and SocTrang in the Mekong River Delta from April to December 2016. The results show that labor, business capital, affiliated with input enterprises, and consumption of products affect the efficiency of business activities of agricultural cooperatives. Through research results, a number of solutions for the development of sustainable agricultural cooperatives in the Mekong River Delta will be recommended.
  • The Rainfall Factor of Climate Change Effects on the Agricultural
           Environment: A Review

    • Abstract: The study of the climatic elements is vital for sustainable development of agriculture of a region. Particularly, rainfall temporal analyses for trends, fluctuations and periodicities are necessary as such can indirectly furnish the status of an environment. A trend may be quite instructive for different segments of the human and natural systems. Extreme weather events that can lead to events such as drought, prolonged heat spell and flooding while these can be accessed through the statistical analysis of a region’s temporal rainfall regime. The global concern on the apparent deterioration in all of the earth’s natural systems, particularly the climate sub-system and global warming with climate change pandemic renders credence to trend and periodicity analyses of climatic elements. This paper therefore did a review of studies of cases of climate change effects on the agricultural environment with emphasis on rainfall, as an important factor.
  • Lyapunov Function for a Dengue Transmission Model where two Species of
           Mosquitoes are Present: Global Stability

    • Abstract: In this study, we are interested in the newly observed endemic due to the ZIKA virus. In the absence of a full knowledge of the dynamics of the infection due to this virus, we consider a model of the closely related dengue virus when there are two species of mosquitoes, A. aegypti and A. albopictus mosquitoes who are both capable of transmitting the two viruses. We use a Susceptible-Infected-Recovered (SIR) model to describe the infection of the human populations. We obtain the basic reproduction ratio (R0) and show that if R0 is less than 1, the disease free equilibrium state is global asymptotically stable. If R0 is greater than 1, we use the Lyapunov function approach to find the conditions for the unique dengue endemic equilibrium state to be globally stable. We then point out the insights into the global stability of the ZIKA epidemic that can be gained by looking at the global stability of a model for the dengue infection in the presence of two species of mosquitoes that can transmit the disease.
  • Processing Large Volume of Biometric Data in the Hadoop Single Cluster
           Node Environment

    • Abstract: In big data evolution, the analysis of large scale data and scrutinizing the required vital information becomes very demanding task. The emerging cloud platform promises and gives hope in handling the enormous volume of data. Hence, a new kind of methodology is required to tap the full potential of leveraging the big data analytics over the biometric data. In this work, we are going to deal with the integration of Hadoop, a map reduce framework with the infamous powerful computer vision library tool, Opencv. The proposed setup will comparatively analyze the large set of biometric data; such as face over the pseudo distributed environment. We test the capacity of our methodology with a different data set and analyze various computational parameters. The results show the proposed method is applicable for dealing in the real distributed environment. 
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
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