A Novel Method for Monitoring Air Speed in Offices Using Low Cost Sensors

2019 ◽  
Author(s):  
Ashrant Aryal ◽  
Ishan Shah ◽  
Burcin Becerik-Gerber
Keyword(s):  
Low Cost ◽  
Novel Method ◽  
Air Speed

A novel method for synthesis of low-cost Ti-Al-C-based cermets

2009 ◽  
Vol 18 (4) ◽  
pp. 267-272 ◽  
Author(s):  
A. Hendaoui ◽  
D. Vrel ◽  
A. Amara ◽  
P. Langlois ◽  
M. Guérioune
Keyword(s):  
Low Cost ◽  
Novel Method

On-Chip Fabrication of None-Dead-Volume Microtips for ESI-MS Applications

2007 ◽  
Vol 121-123 ◽  
pp. 611-614
Author(s):  
Che Hsin Lin ◽  
Jen Taie Shiea ◽  
Yen Lieng Lin
Keyword(s):  
Surface Tension ◽  
Low Cost ◽  
Microfluidic Channel ◽  
Dead Volume ◽  
Esi Ms ◽  
Rapid Fabrication ◽  
Chip Fabrication ◽  
Novel Method ◽  
On Chip ◽  
Highly Uniform

This paper proposes a novel method to on-chip fabricate a none-dead-volume microtip for ESI-MS applications. The microfluidic chip and ESI tip are fabricated in low-cost plastic based materials using a simple and rapid fabrication process. A constant-speed-pulling method is developed to fabricate the ESI tip by pulling mixed PMMA glue using a 30-μm stainless wire through the pre-formed microfluidic channel. The equilibrium of surface tension of PMMA glue will result in a sharp tip after curing. A highly uniform micro-tip can be formed directly at the outlet of the microfluidic channel with minimum dead-volume zone. Detection of caffeine, myoglobin, lysozyme and cytochrome C biosamples confirms the microchip device can be used for high resolution ESI-MS applications.

scholarly journals Invasive Electrical Impedance Tomography for Blood Vessel Detection

2010 ◽  
Vol 4 (1) ◽  
pp. 135-137 ◽  
Author(s):  
Ørjan G. Martinsen ◽  
Håvard Kalvøy ◽  
Sverre Grimnes ◽  
Bernt Nordbotten ◽  
Per Kristian Hol ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Blood Vessels ◽  
Electrical Impedance ◽  
Low Cost ◽  
Positioning System ◽  
Impedance Tomography ◽  
Blood Vessel Detection ◽  
Vessel Detection ◽  
Novel Method ◽  
Controlled Reperfusion

We present a novel method for localization of large blood vessels using a bioimpedance based needle positioning system on an array of ten monopolar needle electrodes. The purpose of the study is to develop a portable, low cost tool for rapid vascular access for cooling and controlled reperfusion of cardiac arrest patients. Preliminary results show that localization of blood vessels is feasible with this method, but larger studies are necessary to improve the technology.

scholarly journals A novel method for rapid and quantitative detection of bisphenol A in urine

2020 ◽  
Author(s):  
Aleksandra Rutkowska ◽  
Aleksandra Olsson ◽  
Jacek Namieśnik ◽  
Andrzej Milewicz ◽  
Jan Krzysztof Ludwicki ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Human Exposure ◽  
Hormone Receptors ◽  
Low Cost ◽  
Medical Diagnostics ◽  
Quantitative Detection ◽  
Adverse Health Effects ◽  
Increased Risk ◽  
Novel Method ◽  
Lifestyle Diseases

Bisphenol A (BPA) is classified as an endocrine disruptor (ED) and it can interact with variety of hormone receptors leading to hormonal disruption and increased risk of various adverse health effects. Reducing human exposure to BPA is one of the main challenges of public health, as it is constantly present in daily life. A low-cost and commonly applied method to enable determination of BPA in the patient's body has yet to be developed. Currently available techniques are expensive, time-consuming, and require access to highly equipped analytical chemistry laboratories. Here we describe a fast and cheap engineered lateral flow assay of our design, to detect of BPA in urine samples. The technology not only provides an opportunity to perform rapid medical diagnostics without the need for an access to the central laboratory but also a means for self-diagnosis by the patient. The addition of β-glucuronidase improves the sensitivity of detection as it releases the free BPA from glucuronide complexes in urine. This invention may become a demonstrated analytical means for lowering human exposure to BPA and probably also to other EDs and consequently, may be useful in decrease of the risk for several lifestyle diseases.

scholarly journals Feasibility Study for a Chemical Process Particle Size Characterization System for Explosive Environments Using Low Laser Power

Micromachines ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 911
Author(s):  
Jesse Ross-Jones ◽  
Tobias Teumer ◽  
Susann Wunsch ◽  
Lukas Petri ◽  
Hermann Nirschl ◽  
...  
Keyword(s):  
Light Scattering ◽  
Low Cost ◽  
Particle Diameter ◽  
Feasibility Studies ◽  
Fast Response ◽  
The Novel ◽  
Micro Channels ◽  
Size Characterization ◽  
Novel Method ◽  
Particle Size Characterization

The industrial particle sensor market lacks simple, easy to use, low cost yet robust, safe and fast response solutions. Towards development of such a sensor, for in-line use in micro channels under continuous flow conditions, this work introduces static light scattering (SLS) determination of particle diameter using a laser with an emission power of less than 5 µW together with sensitive detectors with detection times of 1 ms. The measurements for the feasibility studies are made in an angular range between 20° and 160° in 2° increments. We focus on the range between 300 and 1000 nm, for applications in the production of paints, colors, pigments and crystallites. Due to the fast response time, reaction characteristics in microchannel designs for precipitation and crystallization processes can be studied. A novel method for particle diameter characterization is developed using the positions of maxima and minima and slope distribution. The novel algorithm to classify particle diameter is especially developed to be independent of dispersed phase concentration or concentration fluctuations like product flares or signal instability. Measurement signals are post processed and particle diameters are validated against Mie light scattering simulations. The design of a low cost instrument for industrial use is proposed.

A novel method to harvest Chlorella sp. via low cost bioflocculant: Influence of temperature with kinetic and thermodynamic functions

2017 ◽  
Vol 225 ◽  
pp. 84-89 ◽  
Author(s):  
Richa Kothari ◽  
Vinayak V. Pathak ◽  
Arya Pandey ◽  
Shamshad Ahmad ◽  
Chandni Srivastava ◽  
...  
Keyword(s):  
Thermodynamic Functions ◽  
Low Cost ◽  
Influence Of Temperature ◽  
Chlorella Sp ◽  
Novel Method

Low-cost palladium decorated on m-aminophenol-formaldehyde-derived porous carbon spheres for the enhanced catalytic reduction of organic dyes

2018 ◽  
Vol 5 (2) ◽  
pp. 354-363 ◽  
Author(s):  
Pitchaimani Veerakumar ◽  
I. Panneer Muthuselvam ◽  
Pounraj Thanasekaran ◽  
King-Chuen Lin
Keyword(s):  
Porous Carbon ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Low Cost ◽  
Carbon Spheres ◽  
Novel Method ◽  
Porous Carbon Spheres

A novel method for the synthesis of recyclable Pd@PCS catalyst was applied for the reduction of CV, EY, and SY.

Additive Manufacture of Lung Equivalent Anthropomorphic Phantoms: A Method to Control Hounsfield Number Utilizing Partial Volume Effect

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Martin Leary ◽  
Rance Tino ◽  
Cameron Keller ◽  
Rick Franich ◽  
Adam Yeo ◽  
...  
Keyword(s):  
Low Cost ◽  
Volume Effect ◽  
Partial Volume Effect ◽  
Patient Specific ◽  
Additive Manufacture ◽  
Partial Volume ◽  
Tissue Equivalent ◽  
Novel Method ◽  
Ct Data ◽  
Traditional Manufacturing

Abstract Anthropomorphic radiotherapy phantoms require tissue-equivalent materials to achieve Hounsfield units (HU) that are comparable to those of human tissue. Traditional manufacturing methods are limited by their high-cost and incompatibility with patient-specific customization. Additive manufacture (AM) provides a significant opportunity to enable manufacture of patient-specific geometries at relatively low cost. However, AM technologies are currently limited in terms of available material types, and consequently enable very little variation in achievable HU when standard manufacturing parameters are used. This work demonstrates a novel method whereby the partial volume effect (PVE) is utilized to control the HU of an AM material, in particular, enabling low HU in the range typical of lung tissue. The method enables repeatable design of lung HU and is compatible with commercial machines using standard print parameters. A custom algorithm demonstrates the clinical application of the method, whereby patient-specific computed tomography (CT) data are algorithmically calibrated according to AM print parameters and confirmed to be robust as a custom anthropomorphic radiotherapy phantoms.

scholarly journals Displacement Detection Decoupling in Counter-Propagating Dual-Beams Optical Tweezers with Large-Sized Particle

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4916
Author(s):  
Xunmin Zhu ◽  
Nan Li ◽  
Jianyu Yang ◽  
Xingfan Chen ◽  
Huizhu Hu
Keyword(s):  
Optical Tweezers ◽  
Ground State ◽  
Low Cost ◽  
Three Dimensional ◽  
Far Field ◽  
Sensing Platform ◽  
Detection Ratio ◽  
Novel Method ◽  
Quantum Ground State ◽  
Ratio Reduction

As a kind of ultra-sensitive acceleration sensing platform, optical tweezers show a minimum measurable value inversely proportional to the square of the diameter of the levitated spherical particle. However, with increasing diameter, the coupling of the displacement measurement between the axes becomes noticeable. This paper analyzes the source of coupling in a forward-scattering far-field detection regime and proposes a novel method of suppression. We theoretically and experimentally demonstrated that when three variable irises are added into the detection optics without changing other parts of optical structures, the decoupling of triaxial displacement signals mixed with each other show significant improvement. A coupling detection ratio reduction of 49.1 dB and 22.9 dB was realized in radial and axial directions, respectively, which is principally in accord with the simulations. This low-cost and robust approach makes it possible to accurately measure three-dimensional mechanical quantities simultaneously and may be helpful to actively cool the particle motion in optical tweezers even to the quantum ground state in the future.

scholarly journals Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings

2020 ◽  
Vol 124 (1275) ◽  
pp. 786-811
Author(s):  
M. Rezaei ◽  
S.A. Fazelzadeh ◽  
A. Mazidi ◽  
M.I. Friswell ◽  
H.H. Khodaparast
Keyword(s):  
Structural Parameters ◽  
Low Cost ◽  
Fuzzy Variable ◽  
Fuzzy Uncertainty ◽  
Aircraft Wings ◽  
Wing Flutter ◽  
Flutter Speed ◽  
Wing Model ◽  
Safe Region ◽  
Air Speed

ABSTRACTIn the present study, fuzzy uncertainty and reliability analysis of aeroelastic aircraft wings are investigated. The uncertain air speed and structural parameters are represented by fuzzy triangular membership functions. These uncertainties are propagated through the wing model using a fuzzy interval approach, and the uncertain flutter speed is obtained as a fuzzy variable. Further, the reliability of the wing flutter is based on the interference area in the pyramid shape defined by the fuzzy flutter speed and air speed. The ratio between the safe region volume and the total volume of the pyramid gives the reliability value. Two different examples are considered—a typical wing section, and a clean wing—and the results are given for various wind speed conditions. The results show that the approach considered is a low-cost but suitable method to estimate the reliability of the wing flutter speed in the presence of uncertainties.

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