THE CARBON NANOTUBE-EMBEDDED BOUNDARY LAYER THEORY FOR ENERGY HARVESTING

Single-walled carbon nanotubes (SWNTs) and multi-walled nanotubes (MWNTs) are gaining appeal in mechanical engineering and industrial applications due to their direct influence on enhancing the thermal conductivity of base fluids. With such intriguing properties of carbon nanotubes in mind, our goal in this work is to investigate radiation effects on the flow of carbon nanotube suspended nanofluids in the presence of a magnetic field past a stretched sheet impacted by slip state. CNTs flow and heat transmission are frequently modelled in practice using nonlinear differential equation systems. This system has been precisely solved, and an accurate analytical expression for the fluid velocity in terms of an exponential function has been derived, while the temperature distribution is stated in terms of a confluent hypergeometric function. The impact of the radiation parameter, slip parameter, sloid volume fraction, magnetic parameter, Eckart and Prandtl numbers on the velocity, temperature, and heat transfer rate profiles are demonstrated using a parametric analysis. When compared to the two types of nanoparticles (Cooper and Silver) in earlier published articles, temperature profiles for single-walled nanotubes (SWNTs) and multi-walled nanotubes (MWNTs) are revealed to be particularly sensitive to radiation, solid volume fraction, and slip parameters. Nanomechanical gears, nanosensors, nanocomposite materials, resonators, and thermal materials are only a few of the present problem's technical applications

The senses perceive the meanings of graphic processors on smartphones

Perception is a processing of information that comes from the senses to the brain, so that the complex central nervous system determines, organizes and interprets information to understand the world around us, and one of the most important senses is the sense of sight, which includes external visual vision, mental vision, imaginative and internal emotional, through which the human mind adds The meaning depends on the sensory perceptions that it receives, whatever they are. When you see a shape, the eye keeps searching for the meaning of its parts. Visual perception is the ability to interpret the surrounding environment, by interpreting information within visible light. Aesthetic perception is a process of mental activity that takes place after receiving signals emitted from graphics. Through the senses, which is the ability to feel the artwork, whether plastic works or videos loaded on mobile phones, which have become apparent to a large segment of society in displaying and watching artworks through mobile phones, which are affected by various factors on which the perception of the senses of the recipient who enjoys a prior visual culture depends. For artistic work as a result of the stability of the formal perceptions of the work of art.The research problemWhat are the factors that affect the perception of the meanings of the mobile graphic processors on smart phones?Is the process of sensory perception of the meanings of motion graphics affected on smartphones?The research aims:Determine the perception factors that are affected by mobile graphics processors on smartphones.Emphasis on the aspects of the process of perception of the senses of the meanings of the animated graphics on smartphonesresearch importance:Standing on the modern capabilities of smartphones in running animated graphics.Emphasizing of the complementarity of the senses in perceiving the animation graphics in smartphones

Efficacy of a Modulated Viscosity-dependent Temperature/nanoparticles Concentration Parameter on a ‎Nonlinear Radiative Electromagneto-nanofluid Flow along an Elongated Stretching Sheet

The purpose of the present communication is to investigate the flow of a radiative electromagnetic-Casson nanofluid past a stretching sheet under the impacts of a chemical reaction and nonlinear thermal radiation. To enrich the blood flow, a modulated viscosity/thermal conductivity dependent temperature/nanoparticles concentration parameter is included in the governing equations. The system of PDEs is transformed to ODEs by invoking similarity transformations and then solved numerically by the well- known fourth-order Runge-Kutta integration scheme based on shooting approach. The main factors affecting the Casson fluid’s temperature profiles are revealed

Natural Products as Anti-HIV Agents and Role in HIV-Associated Neurocognitive Disorders (HAND): A Brief Overview

As the threat of Human Immunodeficiency Virus (HIV)/Acquired Immunodeficiency Syndrome (AIDS) persists to rise, effective drug treatments are required to treat the infected people. Even though combination antiretroviral therapy (cART) provides stable viral suppression, it is not devoid of undesirable side effects, especially in persons undergoing long-term treatment. The present therapy finds its limitations in the emergence of multidrug resistance and accordingly finding new drugs and novel targets is the need of the hour to treat the infected persons and further to attack HIV reservoirs in the body like brain, lymph nodes to achieve the ultimate goal of complete eradication of HIV and AIDS. Natural products such as plant-originated compounds and plant extracts have enormous potential to become drug leads with anti-HIV and neuroprotective activity. Accordingly, many research groups are exploring the biodiversity of the plant kingdom to find new and better anti-HIV drugs with novel mechanisms of action and for HIV-associated neurocognitive disorders (HAND). The basic challenge that still persists is to develop viral replication-targeted therapy using novel anti-HIV compounds with new mode of action, accepted toxicity and less resistance profile. Against this backdrop, the World Health Organization (WHO) suggested the need to evaluate ethno-medicines for the management of HIV/AIDS. Consequently, there is need to evaluate traditional medicine, particularly medicinal plants and other natural products that may yield effective and affordable therapeutic agents. Although there are a good number of reports on traditional uses of plants to treat various diseases, knowledge of herbal remedies used to manage HIV/AIDS and HAND are scanty, vague and not well documented. In this review, plant substances showing a promising action that is anti-HIV and HAND will be explored along with what they interact. Since some plant substances are also known to modulate several cellular factors which are also involved in the replication of HIV and hence their role as potential candidates will be discussed. HIV/AIDS being an exceptional epidemic, demands an exceptional approach and that forms very much focus for the current review

New exact and numerical solutions for the effect of suction or injection on flow of nanofluids past a stretching sheet

The flow of nanofluids past a stretching sheet has attracted much attention due to its wide applications in industry and engineering. Theoretical and numerical solutions have been discussed in this paper for studying the effect of suction or injection on flow of nanofluids past a stretching sheet. In the absence of thermophoresis the analytical exact solution of the stream function was obtained in terms of exponential function, while the exact solutions for temperature and nanoparticle volume fraction were obtained in terms of the generalized incomplete gamma function. In addition, in the presence of thermophoresis, the exact solutions are not available. Therefore, the numerical results, carried out by using Chebyshev collocation method (ChCM). It is found that a good agreement exists between the present results and with those published works. Useful results for temperature profile, concentration profile, reduced Nusselt number and reduced Sherwood number are discussed in details graphically. It was also demonstrated that both temperature and concentration profiles decrease by an increase from injection to suction. Finally, the present results showed that increase of the wall mass transfer from injection to suction decreased both reduced Nusselt number and the reduced Sherwood number when Brownian motion parameter and Lewis number increased

Les nutraceutiques (une réglementation peu contraignante à l'origine d'accidents)

BORDEAUX2-BU Santé (330632101) / SudocSudocFranceF

Le patient sous anticoagulants et antiagrégants plaquettaires (conduite à tenir au cabinet dentaire)

Un nombre non négligeable de patients est traité par des anticoagulants ou des antiagrégants plaquettaires susceptibles d'entraîner des troubles de l'hémostase. Au cabinet, ces patients doivent être l'objet d'attentions particulières pour éviter tout incident notamment lors des extractions. Ce travail rappelle la physiologie et l'exploration de l'hémostase, ainsi que les divers anticoagulants et antiagrégants plaquettaires utilisés dans la thérapeutique actuelle. Enfin, les diférentes conduites à tenir chez les patients traités sont envisagées. La bonne connaissance des techniques d'hémostase locale ainsi que l'utilisation de l'acide tranexamique permettent dans bon nombre de cas de pouvoir intervenir chez un sujet sans modifier son traitement, attitude la plus bénéfique pour le patient.A high rate of our patients is under anticoagulant and antiplatelet therapy, thus haemostasic troubles may occur. In the current dental practice, these patients must be strictly following in order to avoid any incident during dental extractions. This work describes the physiology and the way of exploration of haemostasis as well as the various anticoagulants and antiplatelet therapies used in actual therapeutics. This study shows the behaviour to have with these patients. Mastering local haemostasis techniques and using tranexamic acid avoid changing the patient treatment which is the most beneficent attitude.BORDEAUX2-BU Sci.Homme/Odontol. (330632102) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Insights into Partial Slips and Temperature Jumps of a Nanofluid Flow over a Stretched or Shrinking Surface

This paper elucidates the significance of partial slips and temperature jumps on the heat and mass transfer of a boundary layer nanofluid flowing through a stretched or shrinking surface. Considerable consideration is given to the dynamic properties of the nanofluid process, including Brownian motion and thermophoresis. A similarity transform is introduced to obtain a physical model of nonlinear ordinary differential equations, and the Chebyshev method of collocation is used to numerically analyze the influences of parameters of physical flow such as slip, temperature jump, Brownian motion, thermophoresis, suction (or injection) parameters, and Lewis and Prandtl numbers. The numerical results for temperature and concentration profiles, and heat and mass transfer rates, are graphically represented, and insights into the effects of slips and temperature jumps are revealed. In the case of a stretched sheet, the slip parameter enhances the temperature field and increases the thermal boundary layer thickness as well as the concentration function’s boundary layer thickness. When the slip parameter is raised in the case of the shrinking sheet, the dual solutions for temperature and concentration functions are reduced. For the first solution, both the temperature and concentration functions drop as the slip parameter increases, but for the second solution, both the temperature and concentration functions rise as the slip parameter increases. The discoveries have applications in a number of disciplines, including heat transfer in a solar energy collector. Glass blowing, annealing, and copper wire thinning are just a few of the technical and oilfield applications for the current problem. In high-temperature industrial applications, radiation heat transfer research is critical

Chebyshev Collocation Method for the Effect of Variable Thermal Conductivity on Micropolar Fluid Flow over Vertical Cylinder with Variable Surface Temperature

An analysis is performed to study the role of a variable thermal conductivity on unsteady free convection in a micro-polar fluid past a semi-infinite vertical cylinder with variable surface temperature in the presence of magnetic filed and radiation. The surface temperature is measured to vary as a power of the axial coordinate measured from the leading edge of the cylinder. The governing non-linear partial differential equations are transformed into a linear algebraic system utilizing Chebyshev collocation method in spatial and Crank-Nicolson method in time. Numerical results for the velocity, angular velocity and temperature profiles as well as for the local skin friction, couple stress and Nusselt number are obtained and reported in tabular form and graphically for various parametric conditions to show interesting aspects of the solution. The velocity and temperature profiles are compared with the available results in the literature and it is found to be in good agreement