microscope Articles
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A distributed modelling framework for large-scale microscopic traffic simulation
Simulation modelling is an increasingly popular and effective tool for analysing transportation problems, which are not amendable to study by other means. In this paper, we examine the need for distributed simulation from the perspective of computational speedup and development of large-scale network simulation contexts and datasets. After an overview of the general techniques for the distributed ...
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Integration of mathematical and physical simulation to calibrate car-following behaviour of unimpaired and impaired drivers
Traffic patterns can be modelled by mathematical microsimulation. People can be modelled by driving simulators that resemble flight simulators. This paper shows how driver car-following behaviour from driving simulators can be transferred to traffic microscopic simulation. We capture driver behaviour through physical driver simulator experiments. Subjects holding cell phone conversations while ...
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Biosorption of copper(II) by Pseudomonas aeruginosa
The mechanism of accumulation of copper(II) by Pseudomonas aeruginosa was investigated. Uptake consisted of a rapid process (likely to be extracellular binding) followed by a slow phase (possibly cellular uptake). The sorption capacity of the microbe was found to be 50 mg/g, and sorption followed the Langmuir isotherm. The presence of mild mineral acids (0.1 N HCl) led to destructive ...
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Virtual Spectrometer & Microscope Demos
Investing in a new optical spectrometer is an important decision for any research group; with a wide range of options available. To aid you in selecting the ideal spectrometer and configuration for your research we would like to invite you for a virtual visit to our Applications Lab in Scotland.Virtual demos are available for our range of photoluminescence, Raman, and transient absorption ...
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Competitive egress behaviour: a fuzzy logic-inspired microscopic model
Some recent tragic events in overcrowded situations, as well as the terrorist threat, have highlighted the importance of the availability of good models for pedestrian behaviour under emergency conditions. Existing approaches to crowd models are generally macroscopic or microscopic. In the first case, the crowd is considered to be like a fluid, so that its movement can be described through ...
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A case study of critical point identification in the physical and communication layers of a small urban transportation system
Surface transportation is an important critical infrastructure as it provides the essential services that highly impact a nation's economy. It is important to identify and protect the essential components of the transportation system to ensure its survivability. This paper describes critical point identification of a small urban intelligent transportation network. The analysis was conducted for ...
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Simulation of particle capture in a microfiltration membrane
The present study takes an interest in the description of the fouling mechanisms by a numerical approach at the microscopic scale. At first, an X-ray tomography has enabled the modelling of the membrane structure for the numerical simulations. Next, for different particle size, a same volume of particles has been sent in the modelled membrane and the final permeability has been computed. Thus, ...
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One-step hydrothermal synthesis of CTAB-modified SiO2 for removal of bisphenol A
A stable SiO2 material marked as CTAB-Ms(x) was synthesized by a novel sol-gel method. It was modified with hexadecyl trimethyl ammonium bromide (CTAB), which resulted in high adsorption capacity. Its microstructure and surface functional groups were characterized by scanning electron microscope, transmission electron microscope and Fourier transform infrared. The results showed that ...
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Very low energy scanning electron microscopy in nanotechnology
The group of low energy electron microscopy at ISI AS CR in Brno has developed a methodology for very low energy scanning electron microscopy at high image resolution by means of an immersion electrostatic lens (the cathode lens) inserted between the illumination column of a conventional scanning electron microscope and the sample. In this way the microscope resolution can be preserved down to a ...
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Ultimate Guide to Microscope Slides
Choosing the right slide for your experiment, research, classroom or laboratory testing should not have to be a difficult task. However, with hundreds of options it can become a challenge. Thankfully, we have put together this guide for choosing the right type of slide for your project or laboratory. First, let’s take a look at the history of slides. Slides date back to the Victorian ...
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Role of the Pinhole in a Confocal Microscope
The pinhole is the defining feature of a Confocal Raman Microscope, providing major advantages in spatial resolution and imaging contrast over a conventional optical microscope.Why is a Pinhole Required?When laser light is focused into a sample by a Raman microscope, a three-dimensional excitation volume is formed within the sample. This volume is known as the excitation point spread function ...
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Atomic force microscope-based nanomanipulation with drift compensation
Automating the task of nanomanipulation is extremely important since it is tedious for humans. This paper proposes an atomic force microscope (AFM) based force controller to push nano particles on the substrates. A block phase correlation-based algorithm is embedded into the controller for the compensation of the thermal drift which is considered as the main external uncertainty during ...
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Map of the Month – Convallaria
Welcome to Edinburgh Instruments monthly blog celebrating our work in Raman, Photoluminescence, and Fluorescence Lifetime Imaging. Every month we will highlight our pick for Map of the Month to show how our spectrometers can be used to reveal all the hidden secrets in your samples.SeptemberThe development of fluorescence microscopy in the early 20th century sparked a new era for the field of ...
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Bank Note Analysis with Edinburgh Instruments
Manufacturers of bank notes will use specific and unique dyes which helps to keep authentic bank notes in circulation and aids the identification of forgeries. The dyes will have different photoluminescence (PL) emission, excitation, and lifetimes which can be used for authenticity checks. This blog post briefly details how Edinburgh Instruments RMS1000 Confocal Raman & PL Microscope and FS5 ...
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Field emission measurement techniques for the optimisation of carbon nanotube cathodes
We have developed advanced measurement techniques for the investigation of the field emission (FE) properties of high-technology materials. Flat samples up to 30 mm in diameter can be optimised either for strong or weak electron emission, i.e., cold FE cathodes operating at field levels below 10 V/μm or high-voltage vacuum devices preventing FE up to 200 V/μm. The integral measurement system with ...
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An instrument transfer function approach to atomic force microscopy for surface metrology
In using the frequency domain as a unified platform for representing topology of the sample and capabilities of an instrument, it is shown that instrument transfer functions, when applied to scanned probe instruments such as the atomic force microscope, serve as a powerful design and analysis tool. An instrument transfer function approach is proposed to capture the characteristics of atomic force ...
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Imaging and analysis of chip formation during orthogonal cutting of titanium alloy
Orthogonal cutting of titanium alloy Ti-6Al-4V was investigated in a series of continuous and interrupted turning tests. Direct observation of the chip formation zone was achieved using a high speed imaging system with a long-distance microscope lens. Frame rates from 20,000 to 50,000 frames per second were used to record the chip formation cycle over a range cutting speeds from 4 to 150 m/min ...
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The Canadian Centre for Electron Microscopy: a national facility for ultrahigh resolution electron microscopy
The Canadian Centre for Electron Microscopy is described and the facilities available to Canadian researchers and international collaborators are presented. The facility offers aberration-corrected transmission electron microscopy instrumentation, conventional transmission electron microscopes, scanning electron microscopes and a suite of sample preparation facilities. The advantages and benefits ...
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eBook Titles from IWA Publishing: Free to Download - Volume 2
Process stability and final effluent quality largely depend upon the composition of the biomass in an activated sludge plant. Operational problems such as bulking and scum formation occur when the wrong micro-organisms are dominating the sludge population. Microscopic sludge investigation is therefore essential for process control and stable plant operation. The manual outlines the theoretical ...
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Study of deep inelastic collision in the heavy ion reaction of 14.0 (MeV/u)
132Xe +238UDeep inelastic collision of 14.0 (MeV/u) 132Xe with 238U was studied in mica detectors by Solid State Nuclear Track Detection (SSNTD). The mica detectors were irradiated with 14.0 (MeV/u) 132Xe ions at UNILAC (GSI), Darmstadt, Germany. The target layer was removed by etching the detectors in suitable etchants. Various parameters of events, registered in the detector, were measured using research ...
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