Subjects -> ENGINEERING (Total: 2791 journals)
    - CHEMICAL ENGINEERING (248 journals)
    - CIVIL ENGINEERING (242 journals)
    - ELECTRICAL ENGINEERING (176 journals)
    - ENGINEERING (1402 journals)
    - ENGINEERING MECHANICS AND MATERIALS (452 journals)
    - HYDRAULIC ENGINEERING (56 journals)
    - INDUSTRIAL ENGINEERING (100 journals)
    - MECHANICAL ENGINEERING (115 journals)

ENGINEERING (1402 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 2)
3D Research     Hybrid Journal   (Followers: 17)
AAPG Bulletin     Hybrid Journal   (Followers: 9)
Abstract and Applied Analysis     Open Access   (Followers: 1)
Aceh International Journal of Science and Technology     Open Access   (Followers: 3)
ACS Nano     Hybrid Journal   (Followers: 189)
Acta Geotechnica     Hybrid Journal   (Followers: 6)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 8)
Acta Nova     Open Access  
Acta Polytechnica : Journal of Advanced Engineering     Open Access  
Acta Universitatis Cibiniensis. Technical Series     Open Access   (Followers: 1)
Active and Passive Electronic Components     Open Access   (Followers: 5)
Additive Manufacturing Letters     Open Access   (Followers: 7)
Adsorption     Hybrid Journal   (Followers: 4)
Advanced Energy and Sustainability Research     Open Access   (Followers: 4)
Advanced Engineering Forum     Full-text available via subscription   (Followers: 10)
Advanced Engineering Research     Open Access  
Advanced Journal of Graduate Research     Open Access   (Followers: 1)
Advanced Quantum Technologies     Hybrid Journal   (Followers: 1)
Advanced Science     Open Access   (Followers: 12)
Advanced Science Focus     Free   (Followers: 5)
Advanced Science Letters     Full-text available via subscription   (Followers: 9)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 3)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 19)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 2)
Advances in Applied Energy     Open Access   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Engineering Software     Hybrid Journal   (Followers: 25)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 19)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 27)
Advances in Natural Sciences : Nanoscience and Nanotechnology     Open Access   (Followers: 28)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in OptoElectronics     Open Access   (Followers: 6)
Advances in Physics Theories and Applications     Open Access   (Followers: 12)
Advances in Polymer Science     Hybrid Journal   (Followers: 50)
Advances in Remote Sensing     Open Access   (Followers: 58)
Advances in Science and Research (ASR)     Open Access   (Followers: 8)
Aerobiologia     Hybrid Journal   (Followers: 2)
Aerospace Systems     Hybrid Journal   (Followers: 7)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 7)
AIChE Journal     Hybrid Journal   (Followers: 31)
Ain Shams Engineering Journal     Open Access   (Followers: 1)
Al-Nahrain Journal for Engineering Sciences     Open Access  
Al-Qadisiya Journal for Engineering Sciences     Open Access  
AL-Rafdain Engineering Journal     Open Access  
Alexandria Engineering Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 21)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 7)
American Journal of Engineering Education     Open Access   (Followers: 13)
American Journal of Environmental Engineering     Open Access   (Followers: 6)
American Journal of Industrial and Business Management     Open Access   (Followers: 23)
Annals of Civil and Environmental Engineering     Open Access   (Followers: 2)
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Pure and Applied Logic     Open Access   (Followers: 4)
Annals of Regional Science     Hybrid Journal   (Followers: 7)
Annals of Science     Hybrid Journal   (Followers: 9)
Annual Journal of Technical University of Varna     Open Access  
Antarctic Science     Hybrid Journal   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applicable Analysis: An International Journal     Hybrid Journal   (Followers: 1)
Applications in Energy and Combustion Science     Open Access   (Followers: 2)
Applications in Engineering Science     Open Access  
Applied Catalysis A: General     Hybrid Journal   (Followers: 7)
Applied Catalysis B: Environmental     Hybrid Journal   (Followers: 9)
Applied Clay Science     Hybrid Journal   (Followers: 6)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 16)
Applied Energy     Partially Free   (Followers: 25)
Applied Engineering Letters     Open Access  
Applied Magnetic Resonance     Hybrid Journal   (Followers: 3)
Applied Nanoscience     Open Access   (Followers: 7)
Applied Network Science     Open Access   (Followers: 2)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Physics Research     Open Access   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 1)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 10)
Arctic     Open Access  
Arid Zone Journal of Engineering, Technology and Environment     Open Access  
ArtefaCToS : Revista de estudios sobre la ciencia y la tecnología     Open Access  
Asian Journal of Applied Science and Engineering     Open Access  
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 Technology Innovation     Hybrid Journal   (Followers: 5)
Assembly Automation     Hybrid Journal   (Followers: 2)
ATZagenda     Hybrid Journal  
ATZextra worldwide     Hybrid Journal  
AURUM : Mühendislik Sistemleri ve Mimarlık Dergisi = Aurum Journal of Engineering Systems and Architecture     Open Access   (Followers: 1)
Australasian Journal of Engineering Education     Hybrid Journal   (Followers: 3)
Australasian Physical & Engineering Sciences in Medicine     Hybrid Journal   (Followers: 1)
Australian Journal of Multi-Disciplinary Engineering     Hybrid Journal  
Autocracy : Jurnal Otomasi, Kendali, dan Aplikasi Industri     Open Access  
Automotive and Engine Technology     Hybrid Journal  
Automotive Experiences     Open Access  
Automotive Innovation     Hybrid Journal  
Avances en Ciencias e Ingenierías     Open Access  
Avances: Investigación en Ingeniería     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 2)
Bangladesh Journal of Scientific and Industrial Research     Open Access  
Basin Research     Hybrid Journal   (Followers: 6)
Batteries     Open Access   (Followers: 8)
Batteries & Supercaps     Hybrid Journal   (Followers: 5)
Bautechnik     Hybrid Journal   (Followers: 1)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 27)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access  
Beyond : Undergraduate Research Journal     Open Access  
Bhakti Persada : Jurnal Aplikasi IPTEKS     Open Access  
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access  
Bilge International Journal of Science and Technology Research     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Hybrid Journal   (Followers: 11)
Biomedical Engineering     Hybrid Journal   (Followers: 11)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 3)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 4)
Biomedical Microdevices     Hybrid Journal   (Followers: 8)
Biomedical Science and Engineering     Open Access   (Followers: 4)
Biomicrofluidics     Open Access   (Followers: 7)
Biotechnology Progress     Hybrid Journal   (Followers: 42)
Black Sea Journal of Engineering and Science     Open Access  
Botswana Journal of Technology     Full-text available via subscription   (Followers: 1)
Boundary Value Problems     Open Access  
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 12)
Bulletin of Engineering Geology and the Environment     Hybrid Journal   (Followers: 15)
Cahiers Droit, Sciences & Technologies     Open Access   (Followers: 1)
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 28)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 51)
Carbon Resources Conversion     Open Access   (Followers: 2)
Carpathian Journal of Electronic and Computer Engineering     Open Access  
Case Studies in Thermal Engineering     Open Access   (Followers: 9)
Catalysis Communications     Hybrid Journal   (Followers: 7)
Catalysis Letters     Hybrid Journal   (Followers: 3)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 9)
Catalysis Science and Technology     Hybrid Journal   (Followers: 9)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 4)
Catalysis Today     Hybrid Journal   (Followers: 4)
CEAS Space Journal     Hybrid Journal   (Followers: 6)
Cell Reports Physical Science     Open Access  
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 2)
CFD Letters     Open Access   (Followers: 7)
Chaos : An Interdisciplinary Journal of Nonlinear Science     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 1)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Engineering     Open Access   (Followers: 1)
Chinese Journal of Population, Resources and Environment     Open Access  
Chinese Science Bulletin     Open Access  
Ciencia e Ingenieria Neogranadina     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia y Tecnología     Open Access  
Ciencias Holguin     Open Access   (Followers: 1)
CienciaUAT     Open Access  
Cientifica     Open Access  
CIRP Annals - Manufacturing Technology     Hybrid Journal   (Followers: 10)
CIRP Journal of Manufacturing Science and Technology     Hybrid Journal   (Followers: 12)
City, Culture and Society     Hybrid Journal   (Followers: 23)
Clay Minerals     Hybrid Journal   (Followers: 7)
Cleaner Engineering and Technology     Open Access   (Followers: 5)
Cleaner Environmental Systems     Open Access   (Followers: 5)
Coastal Engineering     Hybrid Journal   (Followers: 16)
Coastal Engineering Journal     Hybrid Journal   (Followers: 7)
Coastal Engineering Proceedings : Proceedings of the International Conference on Coastal Engineering     Open Access   (Followers: 1)
Coastal Management     Hybrid Journal   (Followers: 29)
Coatings     Open Access   (Followers: 2)
Cogent Engineering     Open Access   (Followers: 1)
Cognitive Computation     Hybrid Journal   (Followers: 2)
Color Research & Application     Hybrid Journal   (Followers: 1)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 18)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 21)
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 27)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Composite Structures     Hybrid Journal   (Followers: 246)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 180)
Composites Part B : Engineering     Hybrid Journal   (Followers: 224)
Composites Part C : Open Access     Open Access   (Followers: 1)
Composites Science and Technology     Hybrid Journal   (Followers: 151)
Comptes Rendus : Mécanique     Open Access   (Followers: 2)
Computation     Open Access   (Followers: 1)
Computational Geosciences     Hybrid Journal   (Followers: 17)
Computational Optimization and Applications     Hybrid Journal   (Followers: 9)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 6)
Computer Science and Engineering     Open Access   (Followers: 15)
Computers & Geosciences     Hybrid Journal   (Followers: 30)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 8)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 7)
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: 31)
Conciencia Tecnologica     Open Access  
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 8)
Control Engineering Practice     Hybrid Journal   (Followers: 46)

        1 2 3 4 5 6 7 8 | Last

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Journal Cover
Applied Nanoscience
Number of Followers: 7  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2190-5509 - ISSN (Online) 2190-5517
Published by SpringerOpen Homepage  [229 journals]
  • All-green wound dressing prototype based on Nile tilapia skin impregnated
           with silver nanoparticles reduced by essential oil

    • Abstract: The development of eco-friendly prototypes for wound dressing systems represents an important source of investigation about alternatives for the treatment of severe infections. The production of antibacterial agents free of antibiotics, based on natural products and biological supports is a hot topic for science applied in circular economy concepts. Herein, the green synthesis of silver nanoparticles was assisted by essential oil and the following impregnation of products in tilapia skin has been conducted as a strategy to produce all-green wound dressing systems to be applied as biofilm protective layers and active antibacterial agents. The use of these wound dressing systems against Staphylococcus aureus was evaluated in terms of biofilm adhesion, inhibition halo assays, and time-kill assays as a function of the nature of reducing agent applied in the production of silver nanoparticles.
      PubDate: 2022-02-01
       
  • Impact of nanoparticles on the surface characteristics of reservoir
           minerals in relation to the in-situ combustion process of enhanced oil
           recovery

    • Abstract: In-situ combustion (ISC) is one of the most complex methods of thermal enhanced oil recovery (EOR). This study is aimed at improving the basic understanding of the impact of nanoparticles (NPs) on the surface characteristics of reservoir minerals during pyrolysis and low-temperature oxidation (LTO) processes. Different parameters were investigated under thermal conditions using crude oil and two types of NPs, including alteration of the oil density, interfacial tension (IFT) between water and oil, and wettability of calcite and quartz. The results of this study showed that the addition of NPs under the O2-atmosphere led to decreasing the oil density compared to that without NPs. Compared to the sample of oil without NPs, the addition of NPs decreased IFT between water and oil in both processes and temperatures, except for the sample heated at 210 °C under the N2-atmosphere. The IFT between water and oil with and without NPs after heating under the O2-atmosphere was remarkably less than that after heating under the N2-atmosphere. Both minerals became more oil-wet after heating under the N2 and O2-atmosphere. The wettability alteration of calcite was more notable than quartz. Moreover, the presence of NPs in the system had negligible effects on the wettability alteration of rocks. Besides, increasing the temperature in both processes led to increasing the contact angle. The results of absorption experiments were also consistent with the results of wettability alteration.
      PubDate: 2022-02-01
       
  • Plant-mediated green synthesis of zinc oxide nanoparticles for novel
           application to enhance the shelf life of tomatoes

    • Abstract: To make fresh fruits, vegetables and other food substances safe and edible for a longer period of time than usual, their shelf life is increased. Therefore, their shelf life enhancement has garnered significant attention from scientists across the globe. Nanotechnology has played a vital role in this field of research for decades. In this study, a simple green synthesis technique was used to synthesize highly efficient ZnO nano-rods based nanostructures. The properties of bio-synthesized ZnO samples were examined using various characterization techniques including Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and UV–visible spectroscopy. To study the effect of ZnO NPs on the shelf life of tomatoes the100 ppm solution of ZnO NPs and ZnO NPs along with Chitosan due to its potential anti-microbial properties have been sprayed on tomatoes. The physiological weight loss (PWL) and physical appearance and overall acceptability using 5-point scale are employed for consideration of variations in shelf life. It was seen that ZnO NPs have unequivocally preserved the tomatoes for a longer period and extended their shelf-life as compared to control and ZnO NPs along with Chitosan. Furthermore, ZnO NPs have shown no toxic effects on tomatoes. In this work, it has been investigated that high concentration of leaf extract gives smaller sized ZnO NPs and larger antimicrobial activity. This research is highly suitable for researchers for choice of suitable synthesis method as well as for the food industry for the improvements in shelf time.
      PubDate: 2022-02-01
       
  • Cu2+-doped α–β phase heterojunctions in Bi2O3 nanoparticles for
           enhanced photocatalytic degradation of organic dye rhodamine B

    • Abstract: α–β Bi2O3 modified with Cu2+ ions in various compositions have been synthesized by hydrothermal process. The crystallinity, surface structure, elemental compositions and optical characteristics were uncovered by relevant techniques including XRD, SEM, EDX, XPS, PL, and UVDRS. Total organic carbon (TOC) analysis was performed to determine the dye degradation efficiency of photocatalyst. Highly crystalline Bi2O3 nanoparticles consisting of α–β phase heterojunctions were observed possessing crystallite sizes in the range of 30–40 nm. The photocatalytic activity of Cu2+-modified Bi2O3 composites was studied using RhB dye under the illumination of visible light. The results reveal that addition of Cu2+ ions into Bi2O3 lattice significantly improved the degradation rate over the pure sample. The highest activity was obtained for sample containing 2 mol % Cu in Bi2O3 lattice where complete degradation of the pollutant was attained in 120 min. The increased activity is largely ascribed to the effective separation of charge carriers due to Cu2+ doping and formation of α–β phase heterojunctions in Bi2O3.The effect of pH conditions and role of active species on degradation kinetics were also examined.
      PubDate: 2022-02-01
       
  • Investigation on the performance improvement of household refrigeration
           system using R-134a refrigerant blended with ceria nano additives

    • Abstract: Household energy consumption increases day by day because of the civilization and luxury life. In case of household refrigerator, the compressor consumes more energy. There is possibility to reduce the compressor work by increasing the heat transfer rate of refrigerant using nano-additives. Hence, the aim of the present work is to improve the performance of the household refrigerator using nano-additive refrigerant. Ceria nanoparticles (CeO2) have the potential to transfer more heat as it has higher thermal conductivity. In this research work, four types of refrigerant were prepared namely R0 (R134a), R1 (R134a + 0.05 vol% CeO2), R2 (R134a + 0.10 vol% CeO2) and R3 (R134a + 0.15 vol% CeO2) and the performance of the household refrigerator was studied using the aforementioned refrigerants. Experimental results showed that the thermal conductivity of R0 improved with the addition of CeO2 and the R3 refrigerant displayed the higher thermal conductivity of 0.057 W/mK. Further, the COP of the refrigeration system was greatly improved when using R3 (R134a + 0.15 vol% CeO2) refrigerant, which is 7.6% greater than the COP of R0 refrigerant. Moreover, the suction and delivery characteristics were enhanced while using CeO2 blended refrigerant. The results show the R3 refrigerant had the lowest compression ratio of 4.4, which was 6.03% lower than the compression ratio of R0 refrigerant. In addition, a significant enhancement in volumetric and isentropic efficiency was observed as 91.53 and 61.98%, respectively.
      PubDate: 2022-01-25
       
  • Design and simulation of inorganic perovskite solar cell

    • Abstract: The design and performance of inorganic tin-based perovskite known as cesium tin iodide (CsSnI3), which serves to be an alternative for conventional toxic lead-based solar cells have been reported. The designed solar cell has been optimized by varying parameters such as active layer thickness, absorber defect density and work function of the bottom electrode. The optimal thickness of the perovskite layer has been found to be 400 nm that leads to a performance improvement of ~ 8%. The final optimized solar cell has reached a Fill factor (FF) of 85.44%, a short-circuit current density (Jsc) of 31.12 mA/cm2, a power conversion efficiency (PCE) of 32.36%, and an open-circuit voltage (Voc) of 1.22 V. The device has been successfully compared with the previous works to showcase its performance enhancement. Also, the optical and electrical properties of the device such as absorption coefficient, indirect and direct bandgap transition, capacitance–voltage and conductance–voltage characteristics have been obtained and analysed with the help of Tauc and Bode plots. This study also suggests a low-cost perovskite solar cell, which is free from carcinogenic agents that can be used for solar energy harvesting in a larger scale.
      PubDate: 2022-01-25
       
  • Field-effect BJT: an adaptive and multifunctional nanoscale transistor

    • Abstract: Nano-electronic integrated circuit technology is exclusively based on MOSFET transistor due to its scalability down to the nanometer range. On the other hand, bipolar junction transistor (BJT), which provides unmatched analog characteristics and frequency response, cannot be scaled to nanometer regime without the loss of transistor action. Here a versatile nanoscale transistor is introduced that provides identical BJT behavior and expands its capabilities. The new transistor uses CMOS fabrication technology and creates BJT’s emitter, base, and collector via electric fields. By allowing carrier modulation during operation, its current gain can be changed at least by several orders of magnitude. This property introduces novel adaptive, variable gain, and programmable analog modules into existing electronic circuit design and manufacturing. Regular BJT behavior in various confiurations are obtained, the common-emitter presented here indicates an ideality factor of 1.09 for forward biased emitter–base diode, a Gummel plot similar to regular BJT, and a current amplification factor that can change by 6 orfers of magnitude by varying gate voltages. A NOT gate version of this device with the critical dimension of 7 nm operates at 730 GHz, and its three-stage ring oscillator exhibits a frequency of 240 GHz. With proper gate biasing, it can also operate as a nanoscale MOSFET, easily alleviating short-channel effects.
      PubDate: 2022-01-23
       
  • Development and antibacterial activity of zinc oxide nanoparticles
           encapsulated in core–shell microparticles for managing enterotoxigenic
           Escherichia coli-related post-weaning diarrhea

    • Abstract: ZnO is a commonly used antibiotic alternative in managing post-weaning piglet diarrhea. However, a major struggle faced in the industry is in being able to taper the amount of ZnO given to piglets to curb downstream environmental harm when it is excreted. To meet these demands, this research focuses on ZnO encapsulation, which offers an opportunity to increase ZnO targetability and reduce premature loss. In this research, ZnO is also delivered as nanoparticles, which has benefits for improving the antibacterial action against enterotoxigenic E. coli—the most common pathogen of post-weaning piglet diarrhea. ZnO nanoparticles were suspended in an oil-based core encased in a EUDRAGIT® L100 shell (core–shell ZnO microparticles) were fabricated and studied for their ZnO release profile in both simulated conditions and digestive fluid conditions. Digestive fluid release studies demonstrate 30% premature ZnO release compared to simulated conditions that showed over 50% premature ZnO release (p < 0.001) prior to reaching the target location. The digestive studies highlight how the interactions within the piglet digestive fluids make it difficult to reproduce in simulated studies and benefits as a step-up study to better reflect on the complexities of the piglet gut. Finally, we assessed the antibacterial activity of the core–shell ZnO microparticles against enterotoxigenic E. coli for combating post-weaning diarrhea, demonstrating the ability for the microparticles to meet MIC and sustain it within the target location. By the WST-8 assay method, we also report the MIC for ZnO nanoparticles against enterotoxigenic E. coli to be 0.125 mg/mL.
      PubDate: 2022-01-23
       
  • Highly sensitive sensor probe development with ZCCO nano-capsule
           composites for the selective detection of unsafe methanol chemical by
           electrochemical technique

    • Abstract: In this approach, an electrochemical sensor for the detection of methanol was assembled by depositing ZnO/CdO/CuO nanocapsules (ZCCO NCs) as a thin layer on the flat surface of glassy-carbon electrode (GCE) to result in the working electrode of the proposed methanol sensor probe. The characterization of wet-chemically prepared ZCCO NCs were performed by analyzing using including Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), UV–Vis Spectroscopy (UV–vis), X-Ray Diffraction Analysis (XRD), Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM) and Energy-dispersive X-ray spectroscopy (EDS) tools. The assembled methanol sensor was performed based on I-V electrochemical method. The corresponding resultant current data were found to be linear at the current versus concentration plot in a concentration range of methanol of 0.1 mM ~ 0.01 nM, that clarified as the detection range (LDR) of the methanol sensor probe. Here, the methanol sensor sensitivity is measured using the slope of the calibration curve in LDR by considering the coated cross-sectional area (0.0316 cm2) of ZCCO on the flat part of GCE. It is obtained value as 1.7405 µAµM−1 cm−2. Besides this, the limit of methanol detection (LOD; 54.51 ± 2.73 pM) is obtained at signal/noise (S/N = 3). Moreover, the other parameters of the methanol sensor probe including reproducibility, repeatability, stability, and response time were exhibited with good results and reliability. Additionally, the assembled methanol I-V sensor probe was tested to execute the real-time application by analyzing environmental samples and found acceptable. Based on the outcome of applicability and the way of this sensor assembling, this unique I-V method might be a potential technique in the field of portable sensor development using nanostructure materials for the safety of environmental and healthcare fields in a broad scales.
      PubDate: 2022-01-22
       
  • 5G standards for the Industry 4.0 enabled communication systems using
           artificial intelligence: perspective of smart healthcare system

    • Abstract: The emergence of the Industry 4.0 revolution to upgrade the Internet of Things (IoT) standards provides the prominence outcomes for the future wireless communication systems called 5G. The development of 5G green communication systems suffers from the various challenges to fulfill the requirement of higher user capacity, network speed, minimum cost, and reduced resource consumption. The use of 5G standards for Industry 4.0 applications will increase data rate performance and connected device's reliability. Since the arrival of novel Covid-19 disease, there is a higher demand for smart healthcare systems worldwide. However, designing the 5G communication systems has the research challenges like optimum resource utilization, mobility management, cost-efficiency, interference management, spectral efficiency, etc. The rapid development of Artificial Intelligence (AI) across the different formats brings performance enhancement compared to conventional techniques. Therefore, introducing the AI into 5G standards will optimize the performances further considering the various end-user applications. We first present the survey of the terms like 5G standard, Industry 4.0, and some recent works for future wireless communications. The purpose is to explore the current research problems using the 5G technology. We further propose the novel architecture for smart healthcare systems using the 5G and Industry 4.0 standards. We design and implement that proposed model using the Network Simulator (NS2) to investigate the current 5G methods. The simulation results show that current 5G methods for resource management and interference management suffer from the challenges like performance trade-offs.
      PubDate: 2022-01-21
       
  • Design energy efficient shared distributed memory management system on
           SoC’s to improve memory performance

    • Abstract: System-on-Chip (SoC) design is becoming increasingly complex as a result of trends such as miniaturisation and data-intensive applications, and it is becoming increasingly difficult to manage without the use of automated design methods. Prior work proposed a novel technique called optimal energy efficient load aware memory management, which concentrated on the amount of extra storage after mapping using a task monitoring algorithm and reduced the amount of energy consumed. Every shared distributed memory algorithm that has been proposed has been influenced by embedded system synthesis theory. The following are the contributions made by this work to the fields of SoC design in general and on-chip memory optimization in particular. This paper proposes a complete workflow to improve memory subsystems in an application-specific way when the system was designed. In general, the proposed memory optimization methods generate good results in Xilinx's 14.2 integrated simulation environment, when integrated into the complete simulation, optimization, and code generation flow.
      PubDate: 2022-01-18
       
  • Engineering of combination drug delivery of pH/reduction response
           potential nanocarrier for the treatment of liver cancer

    • Abstract: Combination cancer therapy may be facilitated using a nanoparticle-based drug delivery system. However, the therapeutic efficiency of cancer nanomedicines is reduced due to poor drug release into the cancer cells. To the treatment of liver malignancy, a PEGylated poly(α-lipoic acid) copolymer with mPEG-αPLA was constructed and exploited as a dual reduction/pH response nanocarrier to delivery of capsaicin (CAP) and doxorubicin (DOX). Due to their self-assembly in an aqueous solution, the mPEG-αPLA amphiphilic polymers could be effectively encapsulated on CAP and DOX to synthesize CAP and DOX co-loaded nanomaterials (CAP/DOX@NPs). After being prepared, the CAP/DOX@NPs released more CAP and DOX in response to reduction and acid stimuli than those left undamaged. According to the results of flow cytometry and confocal laser scanning microscopy, the HepG2 liver cancer cells rapidly absorbed the dual-drug-loaded nanoparticles and released drugs intracellularly. As a result, in HepG2 cells, CAP/DOX@NPs promoted increased cell death and had synergistic therapeutic effects. In biochemical models such as acridine orange and ethidium bromide (AO/EB and nuclear DAPI staining), results were demonstrating the nanoparticles effectively induce apoptosis in HepG2 liver cancer cells. Moreover, in vivo systemic toxicity outcomes shown that the CAP/DOX@NPs could be quickly excreted from the body with no apparent toxicity signs. Overall, these findings demonstrate that the suggested technique for treating liver cancer with a dual-response nanocarrier based on mPEG-αPLA copolymer is promising.
      PubDate: 2022-01-18
       
  • The powerful effects of social media platforms on orthodontic patient
           knowledge’s improving, attitude management and it is influence on
           financial income of the orthodontic clinic

    • Abstract: The aim of this study was increasingly influencing the health care landscape, so orthodontic patients can easily obtain information about orthodontic. The aim of this study was to investigate the benefits of using social media sites as a source of information to orthodontic patients for improving their knowledge about orthodontic care and treatment and the extend of its on reduce the duration of orthodontic treatment (DOT) and investigate the potential benefits of using social media platforms in marketing in orthodontic practices to increase the financial income of orthodontic clinics. 150 orthodontic patients were recruited as participants from the orthodontic clinic at the Near East University (in North Cyprus). The patients were 13 years and over from both sexes. Patients were excluded if they were not users of social media sites, had a history of previous orthodontic treatment, craniofacial syndrome, or low mental abilities. About 74% of the participants (mostly females) confirmed that social networking sites were the major driver for them to take the decision to come to the orthodontist and start orthodontic treatment. 73% of the respondents reported using social media sites as a source of information related to orthodontic treatment, where the Instagram was the most used program.
      PubDate: 2022-01-18
       
  • Self-perception of malocclusion among Saudi adolescents using the
           aesthetic component of the IOTN

    • Abstract: This study was carried out to assess the self-perception of dental appearance among Saudi adolescents in Qassim province using aesthetic component (AC) of the index of orthodontic treatment need (IOTN) to compare it with an orthodontist’s rating and whether the age and gender had any influence on it. A sample of 600 randomly selected school adolescents comprising 297 (49.5%) males and 303 (50.5%) females with age range of 12–17 years old were included in the study. The AC of the IOTN, was the instrument used to measure the perception of malocclusion by both the school adolescents and the orthodontist. t test and Chi-square statistics were used to analyze the data with statistical significance set at P < 0.05. Majority of the students (86.7%) scored themselves as having an attractive dentition with no need of orthodontic treatment. There was a significant difference between the orthodontists' rating and the students' rating (P < 0.05). Further, the gender was not found to be statistically significant in relation to the self-perception of treatment need (P = 0.123), while the age was found to be statistically significant (P < 0.001). A significant difference was found between the orthodontists' rating and the students' ratings of the attractiveness of their occlusions. The age was found to influence the self-perception of orthodontic treatment need, whereas the gender was not found to have any influence. Therefore, for effective orthodontic treatment plan, the self-perception of dental appearance must be taken into consideration to ensure patient satisfaction.
      PubDate: 2022-01-16
       
  • Silver nanowire synthesis analyzing NaCl, CuCl2, and NaBr as halide salt
           with additional thermal, acid, and solvent post-treatments for transparent
           and flexible electrode applications

    • Abstract: Silver nanowires (AgNWs) are promising materials for applications that require conductivity associated with transparency and mechanical flexibility. Controlling the physical characteristics, as well as the synthesis residues, are the biggest challenges to be overcome during the production of silver nanowires. Here, the impact of using NaCl, CuCl2, or NaBr as halide salt on the physical characteristics of the AgNWs was evaluated. The values of the diameters obtained were 40.3 nm for NaCl, 142.5 nm for CuCl2, and 21.3 nm for NaBr. An evaluation of deposition parameters was performed and a sheet resistance of 9.4 Ohm/sq combined with a transmittance of 77.2% was achieved. Additionally, three post-treatments (acid vapor exposition, organic solvent washing, and thermal annealing) were applied to AgNWs films. The acid vapor exposition was the only effective treatment that improved the electrical conductivity by 20%, reaching values of 4.5 Ohm/sq.
      PubDate: 2022-01-14
       
  • Safety studies of polyethylene glycol–hydroxyapatite nanocomposites on
           Drosophila melanogaster: an in vivo model

    • Abstract: Hydroxyapatite Nanoparticle (HAp NPs) is similar to the crystal structure of human bone. It has excellent properties such as biocompatibility, osteoconductivity, and biodegradable. Owing to these properties, it has been used in the field of drug delivery, dental applications, and bone tissue engineering. PEG (Polyethylene glycol) is a synthetic biodegradable polymer. It prevents the agglomeration of the nanoparticles, surface oxidation of the particles and thereby making it more biocompatible. Rose Bengal (RB) is a photo sensitiser which has the ability to generate singlet oxygen. In the present study, PEG/HAp nanocomposite has been synthesised and characterised using DLS and Zeta potential, TEM, and FTIR. The safety efficacy of the PEG/HAp nanocomposite was studied in wild type Drosophila larvae and adult flies after oral administration. Larval crawling assay, negative geotaxis assay, survival assay, biochemical assays—SOD activity, DPPH activity and GSH activity were performed. This study showed that the nanocomposite did not affect the development of the larva rather it enhanced the behavioural and antioxidant activity. In the adult flies, the climbing activity and the survivability patterns were greatly improved. Earlier studies with HAp NPs on the Drosophila model did not enhance behavioural and antioxidant activities whilst in the present study, PEG might help in improving these activities due to its non-immunogenic and non-antigenic properties.
      PubDate: 2022-01-14
       
  • Synthesis of graphitic carbon nitride nanosheets-layered imprinted polymer
           system as a nanointerface for detection of chloramphenicol

    • Abstract: Two-dimensional (2D) nanomaterials can be layered together to design hybrid materials. Their exceptional properties can be harnessed to fabricate advanced sensors. In the present study, a novel mass-sensitive sensor has been developed by preparing a hybrid of 2D graphitic carbon nitride nanosheets and molecularly imprinted polymer. 2D graphitic carbon nitride nanosheets (g-C3N4) were synthesized by a microwave-assisted method. Further, a molecularly imprinted polymer (MIP) was designed by free radical polymerization using chloramphenicol as the template analyte. A layered assembly of g-C3N4 and MIP was prepared to modify quartz crystal microbalance (QCM) devices to generate nanointerface. The g-C3N4 nanosheets possessed zeta potential of − 39 mV which indicated strong electrostatic interaction with gold electrodes of QCM, leading to stable adhesion of MIP layers. Morphological investigations by scanning electron microscopy revealed 2D lamellar structures of g-C3N4, with wrinkles and irregular folds. Atomic force microscopy showed the prepared sheet layers were ~ 30 nm thick. The resultant nanointerface was used as a mass-sensitive transducer to detect chloramphenicol. The decrease of the basic frequency of QCM devices upon inclusion of the target analyte generated the sensor signals. A linear relationship of frequency responses was obtained, yielding a detection limit down to 177 µM. Moreover, the prepared sensor gives 98–90% highly specific detection of chloramphenicol compared to its interferents and structural analogs (thiamphenicol and clindamycin). It suggested sucessful application of the prepared hybrid based on layering of 2D materials. The sensor presented here harbors the benefits of excellent sensitivity as well as selective binding. These attributes make 2D hybrid materials a favorable sensor platform for the detection of important environmental molecules.
      PubDate: 2022-01-14
       
  • Green nanofiber mat from HLM–PVA–Pectin (Hibiscus leaves
           mucilage–polyvinyl alcohol–pectin) polymeric blend using
           electrospinning technique as a novel material in wound-healing process

    • Abstract: The present work is focused on fabrication of novel nanofiber (NF) mat as wound-healing scaffold using blends of novel combination of Hibiscus rosa-sinensis leaves mucilage (HLM)–Polyvinyl alcohol (PVA)–Pectin, which was never reported previously. Different ratios of the polymeric blends were electrospun by setting different parameters to achieve best possible electrospun nanofiber mat which was later crosslinked by glutaraldehyde vapor. The optimized formulation of nanofiber mat was characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The crosslinked sample was evaluated for its efficacy in wound healing using Swiss albino mice model, where rapid healing of excised wound was observed with faster epithelization in test mice group than control mice within a period of 8 days. The hemolysis test with optimized crosslinked nanofiber mat CrNF(S7-CL) indicated it to be hemo-compatible. There were no traces of optimized CrNF(S7-CL) when placed under the skin hypodermis in test mice groups revealing its biodegradable nature. The degradation pattern of CrNF(S7-CL) in soil reflects its eco-friendly behavior. Thus, the prepared nanofiber grade CrNF(S7-CL) can be considered as a novel material for faster wound healing and can also be explored for other biomedical applications.
      PubDate: 2022-01-14
       
  • Graphene oxide-ZnO nanorods for efficient dye degradation, antibacterial
           and in-silico analysis

    • Abstract: Numerous concentrations of graphene oxide (GO)-doped into ZnO nanostructures were synthesized with co-precipitations method. The characterization of the designed composite was carried out using a number of techniques, and their photocatalytic ability was also evaluated. The parameters such as plane orientation, interplanar distance as confirmed using XRD were consistent with HRTEM results. The PL analysis revealed a blueshift in the energies associated with NBEs, which verified the impact of dopant quenching. The findings indicate that ZnO was loaded uniformly on the GO surface due to an efficient interface coupling. Due to such interface coupling between ZnO and GO, electrons can be passed directly from the ZnO (VB) to the GO. The facile nanocomposites (NCs) exhibited excellent photoactivity and are considered to offer a new path for designing next-generation graphene-based semiconductor composites. Furthermore, as-synthesized samples exhibited promising bactericidal potential towards gram-positive (G + ve) and gram-negative (G − ve) bacteria in S. aures and E. coli media, respectively for bacterium. Furthermore, molecular docking studies was employed to unveil the mystery behind bactericidal activity of GO-ZnO NRs and suggested inhibition of β-lactamase and DNA gyrase as mechanism behind these in vitro findings.
      PubDate: 2022-01-13
       
  • Toxic effects of zinc oxide nanoparticles and histopathological and
           caspase-9 expression changes in the liver and lung tissues of male mice
           model

    • Abstract: In this study, the toxic effects of zinc oxide nanoparticles (ZnONPs) at different doses and periods were evaluated, and the histopathological changes and caspase-9 and -8 expression levels in liver and lung tissues of thirty-three male mice model, were determined. The mice model was divided into the treatment groups which were injected intraperitoneally with 0.5 ml of ZnONPs (100 and 300 mg/kg) for 15, 20, and 25 days; and a control group that was injected with 0.5 ml of 0.9% physiological solution for 15, 20, and 25 days. The ZnONPs were shown to cause histopathological effects in the liver and lung tissues which include reversible changes such as hypertrophy, degeneration, and others that were diagnostic in histological sections; and irreversible changes like necrosis. The ZnONPs at 300 mg/kg after 25 days had caused a significant decrease in caspase-9 expression levels (two–fourfold lower than Control) in both liver and lung tissues. However, there was no significant difference in caspase-8 in both liver and lung tissues, suggesting that the intrinsic pathway of apoptosis, rather than the extrinsic pathway, may be inhibited. ZnONPs were, therefore, exhibited to inhibit programmed cell death, and also induced irreversible phenotypic necrosis, in a dose- and time-dependent manner.
      PubDate: 2022-01-06
       
 
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