The processes controlling the fluvial morphodynamics have been the focus of research seeking to evaluate river’s dynamics. The knowledge of the river’s pattern changes is fundamental in designing adequate restoration projects and in preserving the ecological equilibrium in fluvial environment and neighboring areas. Some researchers [among others 1, 2] exalted the role of vegetation on river’s dynamics, others [see as an example 3] suggest to consider the flood effects as fundamental to understand the controlling processes on fluvial morphology. The difficulty in investigating the controlling mechanisms of river’s dynamism is related to the difficulty in stream monitoring: many river floodplains are inaccessible and often densely vegetated [4, 5, 6]. Over the last two decades the use of technologies such as near-infrared Light Detection and Ranging (LIDAR) and Experimental Advanced Airborne Research LIDAR (EAARL) has improved our ability to map of sub-aerial topography and fluvial environments. But, these technologies has shown uncertainties in rivers because of the reflection in the air-water interface. Image-based techniques (LSPIV) have been increasingly used for surface velocity measurements in field. These techniques are non-intrusive and allow obtaining simultaneous spatial information about the instantaneous velocity components also in unsteady flows [7]. Thus, it is possible to yield a large amount of data in a rather short measuring time and to calculate simultaneously the average values for identical spatial windows over many images. In the present study the river’s pattern changes are identified to detect information from satellite images easily available from Google Earth. The adopted methodology has allowed us to obtain indications on the combined effects of the vegetation dynamics and of the different size of flood events in a selected reach of the Tagliamento River (Italy).
Changing lifestyles has rendered human beings more prone to dietary deficiencies. One of such prevalent deficiencies is vitamin D, a vitamin extremely important for the bone homeostasis. The deficit of vitamin D has been observed in individuals ranging over all age groups however, the population under threat involves, infants, pregnant women, women in post-menopausal age, old age people, and individuals suffering from autoimmune bone related disorders. Thus, the detection of vitamin D has become the 5th most popular testing in diagnostics accounting for approximately $ 605.9 million worldwide in the year of 2018. Currently, vitamin D testing is being done by the use of techniques that involve sophisticated instrumentation and skilled labor thus restricting the feasibility of testing to modernized diagnostic laboratories in urban areas. In order to make the testing available to the population in the developing countries, we have designed a cost-effective and user-friendly solution in the form of an enzyme coupled impedance based portable sensor for the detection of vitamin D. The device is based on the in-vivo activation process of vitamin D that takes place via oxidation of 25-dihydroxyvitamin D3 to 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3] by enzyme CYP27B1. The D detect involves electrode immobilized with CYP27B1 that reacts with vitamin D in the blood sample and the interaction leads to oxidation of vitamin D. The interaction leads to a change in impedance that is being amplified and detected with the help of portable potentiostat. The D detect serves as a simple and cost effective point of care diagnostic for vitamin D.
Nowadays, there is a great attention to the plasma applications in medicine. Not only does cold atmospheric pressure plasma provide a therapeutic opportunity to control redox-based processes, it is also an innovative method in rejuvenation. Given the current interest in new methods of rejuvenation, we aimed to introduce a novel pulsed nitrogen plasma torch with potential use in rejuvenation. We investigated production of reactive species at different pulse energy by spectroscopy and also measured nitric oxide and O2 concentration and evaluated the flame temperature. Fifteen Wistar rats were divided into three groups based on the applied energy settings; the skin of the animals was processed with plasma. For quantitative evaluation of dermis, epidermis and hair follicles (to confirm the effects of this technique on rejuvenation), skin biopsies were taken from both unexposed and treated areas. The spectroscopy results showed the presence of nitric oxide in plasma and the concentration was suitable for dermatological applications. A significant increase was observed in epidermal thickness, fibroblast cell proliferation and collagenesis (P < 0.05). Interestingly, plasma led to a temporary increase in the diameter of primary and secondary hair follicles compared to the controls. The results confirmed the positive effects of this pulsed nitrogen plasma torch on rejuvenation and also revealed a new possible aspect of cold plasma; its effect on hair follicles as a promising area in the treatment of alopecia that requires further clinical and molecular studies.
A photodiode is a semiconductor p-n intersection gadget that converts light into an electrical flow. The current is created when photons are invested in the photodiode. Photodiodes may contain optical channels, underlying focal points, and may have huge or little surface regions. Photodiodes are utilized for forward light dissipate where there is high light energy and photomultipliers are utilized to recognize side dispersed light and fluorescence which has a lot of lower energy. The functioning rule of a photodiode is, the point at which a photon of plentiful energy strikes the diode, it's anything several an electron-opening. Thusly, openings in the locale push toward the anode, and electrons advance toward the cathode, and a photocurrent will be created. Driven and Photodiode are converse of one another. Driven produces light with the assistance of charge transporters while photodiode creates current because of occurrence photons. Basically, LED changes over electric energy into light energy yet Photodiode changes over light energy into electrical energy. Schottky diodes are utilized for their low turn-on voltage, quick recuperation time and low-misfortune energy at higher frequencies
An intensifier is a circuit that has a force acquire more prominent than one. A speaker can either be a different piece of gear or an electrical circuit contained inside another gadget. Intensification is crucial to current hardware, and speakers are generally utilized in practically all electronic gear. An enhancer is the gadget that diverts the low voltage signals from your source gear into a sign with sufficient increase to be utilized to control a couple of speakers. An intensifier is an electronic gadget or circuit which is utilized to build the greatness of the sign applied to its info. Intensifier is the nonexclusive term used to portray a circuit which delivers and expanded form of its info signal. You needn't bother with a speaker.
Microwave is not just for cooking, smart cars, or mobile phones. We can take advantage of the wide electromagnetic spectrum to do wonderful things that are more vital to our lives. For example, microwave ablation of cancer tumor is already in wide use, and microwave remote monitoring of vital signs is becoming more important as the population ages. This talk will focus on a biomedical use of microwave at the single-cell level. At low power, microwave can readily penetrate a cell membrane to interrogate what is inside a cell, without cooking it or otherwise hurting it. It is currently the fastest, most compact, and least costly way to tell whether a cell is alive or dead. On the other hand, at higher power but lower frequency, the electromagnetic signal can interact strongly with the cell membrane to drill temporary holes of nanometer size. The nano pores allow drugs to diffuse into the cell and, based on the reaction of the cell, individualized medicine can be developed and drug development can be sped up in general. Conversely, the nano pores allow strands of DNA molecules to be pulled out of the cell without killing it, which can speed up genetic engineering. Lastly, by changing both the power and frequency of the signal, we can have either positive or negative dielectrophoresis effects, which we have used to coerce a live cell to the examination table of Dr. Microwave, then usher it out after examination. These interesting uses of microwave and the resulted fundamental knowledge about biological cells will be explored in the talk.
Neural organizations, otherwise called fake neural organizations or reproduced neural organizations, are a subset of AI and are at the core of profound learning calculations. Their name and construction are motivated by the human cerebrum, imitating the way that organic neurons sign to each other. A neural organization is a progression of calculations that undertakings to perceive fundamental connections in a bunch of information through an interaction that mirror the manner in which the human cerebrum works. In this sense, neural organizations allude to frameworks of neurons, either natural or fake in nature. Neural organizations are registering frameworks with interconnected hubs that work similar as neurons in the human cerebrum. Utilizing calculations, they can perceive covered up examples and connections in crude information, group and characterize it, and after some time ceaselessly learn and improve.
Clinical & Experimental Oncology is a hybrid access journal which also permits unlimited Internet Access to complete Journal content. The journal includes all major themes like research papers, review papers, case reports, online letters to the editors & brief comments on previously published articles or any other relevant findings pertaining but not limited to the field of medical oncology, surgery, radiotherapy and pediatric oncology. Journal of Clinical & Experimental Oncology (JCEOG) (ISSN: 2324-9110) aims to establish channels of communication between academic and research scientific experts by making accessible to the health community, policy makers and to improve medical research worldwide. The journal is dedicated to increasing the depth of medicine and medical sciences across disciplines with the coverage of all areas medical oncology, surgery, radiotherapy, pediatric oncology, cancer diagnosis and therapy, etc.
The novel work describes the synthesis of 5-[(Z)-2-phenylethenyl]-1,3,4-oxadiazol-2-amine substituted metal phthalocyanine compounds (5-[(Z)-2-POAMPc]) and their characterization by physico-chemical and electro-analytical techniques was used to examine the conformation of synthesized molecules. The sensing of nitrite is done on 5-[(Z)-2-POACoPc]/MWCNT/GCE, to increases the electrochemical signals and active surface area. The modified electrode detect the nitrite using CV and DPV techniques in the long linear concentration range of 0.1 to 1.8 µmolL1 ,0.2 to 3.6 µmolL-1 with the LOD of 0.033µmolL-1 , 0.06 µmolL-1 and sensitivity is 3.533 µAµM-1 cm-2 , 1.8724 µAµM-1 cm-2 , and Whereas, the CA showed linear response in the concentration range of 0.02-1.8 µM the correlation coefficient (R2 ) was found to be 0.999 with limit of detection (LOD) 066 nmol L −1 and the sensitivity was 3.554 μAnmol−1 cm−2 for nitrite. The hybrid material composite electrodes show an excellent catalytic behavior for the oxidation of nitrite. Nitrite oxidation which gives a lower peck potential values with greater peck current response as compare to reported were obtained in this work for the (5-[(Z)-2- POACoPc]/MWCNT/GCE) with very high stability. The fabricated electrode 5-[(Z)-2- POAMPc]/MWCNT/GCE shows high selectivity even in the presence of excess of interfering ions such as K+ , Na+ , NH4 + , No3 - , HPO4 2- . The developed composite sensor was investigated for the NO2 - examination in milk samples and the results were in accordance with the literature. The average recapture for these samples was 100.1 (±0.7) %.
Full Duplex 64-QAM OFDM MIMO is used for transmitting the signal in uplink and downlink direction simultaneously. The performance and simulation of the system is done by RF carrier frequency at the W-band that enables the convergence between optical fiber and wireless system for access networking. The proposed system is based on WDM, PDM and 64-QAM OFDM techniques. The system is highly efficient with low latency and bit error rate. The system efficiency could be achieved by BER, Q-factor and eye height.
Statement of the Problem: Functional performance of optical lighting and illumination products and components critically depends on advanced technologies for cost-effective fabrication of tooling with strict surface quality and form geometry accuracy. Recent advancements in laser material processing have resulted in developing fundamentals of a novel unique no-material additive/removal technology known as a surface structuring by laser remelting (SSLRM) process [1-3]. During SSLRM, laser beam moves over a workpiece surface with a constant speed and synchronously controlled laser power while desired surface geometry is defined as a function of a laser power control algorithm. Consequently, new surface geometry is formed due to redistribution and relocation of molten workpiece material. It is a complex, highly non-linear thermo-dynamic process where material rapid melting, reallocation and rapid solidification is controlled by the parameters of the applied continuous wave laser irradiation. The purpose of this study is to advance preliminary developments of SSLRM towards optical tooling applications [4, 5]. Methodology: A wedged edge-lit light guide (WELLG) was chosen as a typical element of automotive rear lighting. Initially, sine-shape WELLG was optically designed where its geometry parameters (e.g. period of 500 µm, amplitude of 40 µm, wedge angle of 2°, made from PMMA plastic) were found to ensure a light delivery efficiency of >50% while covering >80% of the illuminated area. A metal insert from DIN 1.2343 (AISI H11) tooling steel was fabricated using SSLRM process (fig. a), replicated into PMMA plastic by hot embossing as a functional WELLG prototype (fig. c), and its optical performance was evaluated (fig. d). Findings: A period of 498.2±3.8 µm and amplitude of 40.0±2.0 µm were achieved for fabricated tooling insert. Plastic WELLG prototype has demonstrated highly efficient light delivery performance while fully covering the illuminated area. Conclusion & Significance: This study demonstrates high potentials in applicability of the SSLRM process for efficient fabrication of optical tooling for light guiding, distribution and illumination functions and products especially for automotive, solar energy and biomedical industry.
Additive manufacturing and especially Fused Filament Fabrication (FFF) technology is mature enough for industrialisation. Indeed, many works about new composite filaments for 3D-printing and 3D-printability are reported. However most of them only focus on one specific aspect such as temperature changes, bond formation or rheology instead of performing a systemic approach. In addition to this, few papers deal with 3D printing and fire properties. The objective of this study is to develop new filament for FDM/FFF with low reaction to fire in order to fulfil the rail and aeronautic fire requirements. First, the development of a proper definition of 3D-printability and of a mathematical model to determine this 3D-printability was investigated. All the parameters influencing the 3D-printability were determined and the Buckingham theory was applied to determine the dimensionless numbers influencing this 3D-printability. The impact of the 3D-printing parameters on the fire performances was then evaluated via UL94 (standardized vertical flame propagation) and cone calorimeter (heat release rate under radiative heat flux) tests. Finally, formulations were developed in order to satisfy all requirements in rail and aeronautic industry.
Lightweight, flexible and freestanding composite for water purification have recently attracted great interest. Here, we have explained chemically modified cellulose nanofibers (CNFs) with carboxylic surface functional groups by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical) oxidation and chemically bonded the modified CNFs with various metal pillars or metal-organic frameworks to construct a robust and high-efficiency material for various Energy, Electronic and Environmental Applications. The functionalization of CNF proves to be an effective approach to control the porosity via the inter-fiber electrostatic interactions and to provide active functional groups for the chemical interaction with active components for composite film formation. As-prepared flexible film was used for Batteries, Supercapacitors, water purification, and Anti-bacterial activity.
With an increasing demand on high data rates, capacities and wireless connectivity requirements in both personal and business/ enterprise level (for mobile/wireless communications/connectivity) in almost all geographic regions and industrial sectors, the wireless communication landscape in general is undergoing a major transition. Aiming at an interoperable and unified solution to all these demands in a long run, transitions at both the technology as well as the infrastructure and service levels are expected. 5G and IoT are some of the major industry initiatives in these directions. To support this transition as an important complement, traditional communication satellites are also going through major technology level changes across their GEO (geostationary earth orbit) and NGSO (non-geostationary orbits) launches. In this presentation, a look into communication satellites that form a major subset of the global operational satellites, related emerging industry trends, technology drivers and Rohde & Schwarz test solutions addressing them will be summarized. As major emerging trends, high throughput systems (HTS) to very high throughput systems (VHTS), large-scale NGSO satellite constellations are considered. Among the technology drivers, topics such as phased array systems and their potential advantages across the satellite industry eco-system will be covered. To address these trends and technology level test challenges from component, assembly level testing to payload subsystem and satellite manufacturer level testing, a wide range of test solutions from Rohde & Schwarz will be presented.
Background digital technology plays an important role in higher education institutions. Aim the objective of this study is to identify the status of students and teacher digital competence in higher education. Methodology structural equation modeling was used, data have been collected from the students (n=168), teachers (n=64) using a survey questionnaire and an in-depth interview with students, instructors. Data was analyzed using SPSS v26. Findings based the findings more than 88.09 percent of the students use digital tools for non-academic purposes (for entertainment), like playing games, online chatting with their friends, watching videos, telegram, face book for personal or social use. However digital technology plays a great role on student academic achievement especially for students who score in GPA are greater than 3.5. Higher education students have access to digital technologies like the internet, desktop computers, laptops and smart phone. The digital competency of teachers and students are very low. Contribution the study contrives on theory and practical knowledge add. Recommendation Higher education institutions should have strategic digital policy or legal framework and initiatives fostering on how to use digital technologies in higher education.
Regenerative slowing down transforms your vehicle's motor energy into power to charge its battery and lift proficiency. The subsequent erosion works to back the vehicle off, producing warmth and eroding at the material on the cushions and plates all the while. Regenerative slowing down is an energy recuperation system that hinders a moving vehicle or article by changing over active energy into a structure can be either utilized promptly or put away until required. Productivity of the regenerative slowing down measure fluctuates across numerous vehicles, engines, batteries and regulators, however is regularly something to the tune of 60%-70% effective. This essentially implies that 70% of the motor energy lost during the demonstration of slowing down can be turned around into speed increase later. Regen eases back the vehicle through the engine; it doesn't utilize the brake cushions by any stretch of the imagination. Brake cushions are possibly utilized when the brake is applied, which is isolated from regen. Regenerative brakes are an amazingly imaginative element since they help reenergize the battery while in a hurry and they likewise bring about less base brake wear, so they last more than non-regenerative brakes. Augment Regenerative Braking.
Electric force circulation is the last stage in the conveyance of electric force; it conveys power from the transmission framework to singular purchasers. Frequently a few clients are provided from one transformer through optional conveyance lines. There are three essential kinds of circulation framework plans: Radial, Loop, or Network. As you would expect, you can utilize mixes of these three frameworks, and this is regularly done. The Radial circulation framework is the least expensive to assemble, and is generally utilized in meagerly populated regions. The main role of a power appropriation framework is to fulfill the client's needs for energy subsequent to getting the mass electrical energy from transmission or sub transmission substation. There are essentially two significant kinds of appropriation substations: essential substation and client substation. Power is conveyed to shoppers through a mind boggling network. Power is created at power plants and travels through an intricate framework, now and again called the lattice, of power substations, transformers, and electrical cables that interface power makers and purchasers.
Owing to its peculiar physical properties, Titanium Dioxide (TiO2) has found various applications and been an interactive material for research in the field of semiconductor physics. To study the crystallographic nature of prepared Fe/TiO2 and Ni- Fe/TiO2, X-ray Diffraction (XRD) study was done. The result shows that both pure and doped TiO2 samples were anatase phase with the absence of diffraction peaks of Ni or Fe. The Scanning Electron Microscopy (SEM) images revealed that the particle morphology was altered by dopants incorporation which acted as nucleation sites. The dielectric properties and electrical conductivity for TiO2 and TiO2 loaded Fe, Ni and Ni- Fe composition within the temperature range 25°C-110°Cand over the frequency range (100 Hz-0.3 MHz) were also carried out. The values of dielectric constant and dielectric loss decrease with increasing frequency. The dielectric permittivity for Fe/TiO2 exhibits relatively lower dielectric constant than Ni- Fe/TiO2. A relaxation peak has been recognized and shifted to higher frequency with increasing temperature. The ac conductivity was found to increase with frequency which could be related to the hopping conduction process. The activation energy Ea for Fe/TiO2 was higher than Ni-Fe/TiO2 and decreased with increasing frequency.
Time invariant frameworks are frameworks where the yield doesn't rely upon when information was applied. These properties make LTI frameworks simple to address and see graphically. LTI frameworks are better than basic state machines for portrayal since they have more memory. Direct frameworks are frameworks of conditions in which the factors are never increased with one another however just with constants and afterward summarized. Straight frameworks are utilized to portray both static and dynamic relations between factors. A straight framework is supposed to be reliable in the event that it has at any rate one arrangement; and is supposed to be conflicting in the event that it has no arrangement. Have no arrangement, an extraordinary arrangement, and endlessly numerous arrangements, individually. A direct condition of two factors addresses a straight line in R2. A genuine illustration of a LTI framework is any electrical circuit comprising of resistors, capacitors, inductors and straight enhancers. Straight time-invariant framework hypothesis is additionally utilized in picture preparing, where the frameworks have spatial measurements rather than, or notwithstanding, a transient measurement. Straight time is an idea where by time is seen consecutively, as a progression of occasions that are driving toward something: starting, and an end.
