Automated voltage/current technique for cost-effective impedance measurement

1985 ◽  
Vol 31 (3) ◽  
pp. 214
Author(s):  
J.W. Driscoll
Keyword(s):  
Impedance Measurement ◽  
Cost Effective ◽  
Current Technique ◽  
Effective Impedance

A novel integrated dual microneedle-microfluidic impedance flow cytometry for cells detection in suspensions

2017 ◽  
Vol 7 (3) ◽  
pp. 1513 ◽  
Author(s):  
Muhammad Asraf Mansor ◽  
Masaru Takeuchi ◽  
Masahiro Nakajima ◽  
Yasuhisa Hasegawa ◽  
Mohd Ridzuan Ahmad
Keyword(s):  
Flow Cytometry ◽  
Low Cost ◽  
Cost Effective ◽  
Electrical Measurement ◽  
Cell Detection ◽  
Cleaning Process ◽  
Effective Impedance ◽  
Pdms Microchannel ◽  
Flow Cytometry Detection ◽  
Core Functionality

In this study, a new, simple and cost-effective impedance detection of yeast cell concentration by using a novel integrated dual microneedle-microfluidic impedance flow cytometry was introduced. The reported method for impedance flow cytometry detection utilizes embedded electrode and probe in the microfluidic device to perform measurement of electrical impedance when a presence of cells at sensing area. Nonetheless, this method requires costly and complicatedly fabrication process of electrode. Furthermore, to reuse the fabricated electrode, it also requires intensive and tedious cleaning process. Due to that, a dual microneedle integrated at the half height of the microchannel for cell detection as well as for electrical measurement was demonstrated. A commercial available Tungsten needle was utilized as a dual microneedle. The microneedle was easy to be removed from the disposable PDMS microchannel and can be reused with the simple cleaning process, such as washed by using ultrasonic cleaning. Although this device was low cost, it preserves the core functionality of the sensor, which is capable of detecting the passing cells at sensing area. Therefore, this device is suitable for low cost medical and food safety screening and testing process in developing countries.

The use of modified Silastic nasal splints as frontal sinus stents: a technical note

2020 ◽  
Vol 134 (3) ◽  
pp. 270-271
Author(s):  
S Shahidi ◽  
G M Jama ◽  
S K Ahmed
Keyword(s):  
Frontal Sinus ◽  
Recurrent Disease ◽  
Cost Effective ◽  
Technical Note ◽  
Outflow Tract ◽  
Sinus Surgery ◽  
Inexpensive Method ◽  
Frontal Sinus Surgery ◽  
Current Technique ◽  
Cost Effective Approach

AbstractBackgroundEndoscopic frontal sinus surgery is frequently complicated by post-operative stenosis and obstruction of the frontal sinus outflow tract, resulting in recurrent disease. Frontal sinus stents may help prevent re-occlusion of the frontal neo-ostia.ObjectiveThis paper presents a simple and cost-effective approach to frontal sinus stenting using modified Silastic nasal splints.Results and conclusionThe current technique provides an effective, reliable and inexpensive method for achieving post-operative frontal sinus outflow tract patency.

scholarly journals Characterization of Elastic and Plastic Behaviors in Steel Plate Based on Eddy Current Technique Using a Portable Impedance Analyzer

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Meng Fanlin ◽  
Liu Xiucheng ◽  
Wang Heyun ◽  
He Cunfu ◽  
Wu Bin
Keyword(s):  
Tensile Stress ◽  
Yield Point ◽  
Eddy Current ◽  
Impedance Measurement ◽  
Steel Sample ◽  
Medium Carbon Steel ◽  
Current Loop ◽  
Impedance Analyzer ◽  
Practical Applications ◽  
Current Technique

A portable impedance analyzer (PIA) was developed based on a TiePie-HS3 device to provide the comparable impedance measurement accuracy of the Agilent 4294a impedance analyzer in the frequency range of 0~250 kHz. Then the PIA was applied to monitor the tensile stress-induced variation of the eddy current sensor’s impedance in a medium-carbon steel sample. A model of equivalent magnetic field induced by the elastic stress and the number of pinning sites indicated that the inductance of the eddy current loop firstly increased with the increase in the tensile stress and then decreased at the yield point of the material. The experimental results testified that the variation of impedance amplitude, the variation of phase angle, and the shift of two featured frequencies demonstrated opposite variation trends before and after the yield point, as predicated by the model. A new parameter, which combined the impedance variation information of the selected two frequencies, was found to exhibit nearly monotonous dependency on the tensile stress in elastic and plastic stages. The new parameter together with the developed portable impedance analyzer provided the solution to identify the elastic and plastic behaviors in ferromagnetic materials in practical applications with an eddy current technique.

A cost-effective impedance-based structural health monitoring technique for steel structures by monitoring multiple areas

2016 ◽  
Vol 28 (2) ◽  
pp. 154-162 ◽  
Author(s):  
Wongi S Na ◽  
Ki-Tae Park
Keyword(s):  
Health Monitoring ◽  
Structural Integrity ◽  
Steel Structures ◽  
Cost Effective ◽  
Structural Safety ◽  
The Public ◽  
Electromechanical Impedance ◽  
Civil Infrastructures ◽  
Effective Impedance ◽  
Impedance Technique

Throughout the ages, ensuring structural safety has always been a vital task as civil infrastructures deteriorate due to the surrounding environment with time. Although various non-destructive techniques exist nowadays for maintaining the structural integrity, most of the techniques require expensive equipment with highly trained experts. In addition, onsite techniques may require a downtime period of the structure, causing inconvenience for the public. The purpose of this study is to introduce a cost-effective, impedance-based health monitoring approach using the electromechanical impedance technique. Since one device with a piezoelectric material is used to monitor a single area, this can be extremely costly when covering large areas such as bridges and buildings. To overcome this problem, a technique is introduced in this study for one device to monitor multiple areas, significantly reducing the equipment cost when covering large areas.

A Cost-Effective On-Chip Power Impedance Measurement (PIM) System in 7nm FinFET for HPC Applications

2021 ◽  
Author(s):  
Tsung-Che Lu ◽  
Chin-Ming Fu ◽  
Chia-Chun Liao ◽  
Yu-Tso Lin ◽  
Chih-Hsien Chang ◽  
...  
Keyword(s):  
Impedance Measurement ◽  
Cost Effective ◽  
On Chip

Development a Cost-Effective Impedance Tube for Sound Transmission Loss Measurement

2021 ◽  
pp. 1217-1226
Author(s):  
W. H. Tan ◽  
A. S. N. Amirah ◽  
S. Ragunathan ◽  
N. A. N. Zainab ◽  
A. M. Andrew ◽  
...  
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Cost Effective ◽  
Sound Transmission Loss ◽  
Impedance Tube ◽  
Loss Measurement ◽  
Effective Impedance

The application of electron microscopy to diagnosis in gynecologic neoplasms and tumor-like conditions

1984 ◽  
Vol 42 ◽  
pp. 102-105
Author(s):  
Lawrence M. Roth
Keyword(s):  
Electron Microscopy ◽  
Reproductive Tract ◽  
Malignant Tumors ◽  
Frozen Section ◽  
Cost Effective ◽  
Female Reproductive Tract ◽  
Ultrastructural Examination ◽  
Specific Diagnosis ◽  
Potential Value ◽  
Gynecologic Neoplasms

The female reproductive tract may be the site of a wide variety of benign and malignant tumors, as well as non-neoplastic tumor-like conditions, most of which can be diagnosed by light microscopic examination including special stains and more recently immunoperoxidase techniques. Nevertheless there are situations where ultrastructural examination can contribute substantially to an accurate and specific diagnosis. It is my opinion that electron microscopy can be of greatest benefit and is most cost effective when applied in conjunction with other methodologies. Thus, I have developed an approach which has proved useful for me and may have benefit for others. In cases where it is deemed of potential value, glutaraldehyde-fixed material is obtained at the time of frozen section or otherwise at operation. Coordination with the gynecologic oncologist is required in the latter situation. This material is processed and blocked and is available if a future need arises.

The IBM-PC in electron microscopy

1996 ◽  
Vol 54 ◽  
pp. 612-613
Author(s):  
James F. Mancuso
Keyword(s):  
Head Start ◽  
Image Acquisition ◽  
Cost Effective ◽  
Financial Applications ◽  
Number Of Factors ◽  
Instrument Control ◽  
The Cost ◽  
Training And Support ◽  
Control Image ◽  
Ibm Pc

IBM PC compatible computers are widely used in microscopy for applications ranging from control to image acquisition and analysis. The choice of IBM-PC based systems over competing computer platforms can be based on technical merit alone or on a number of factors relating to economics, availability of peripherals, management dictum, or simple personal preference.IBM-PC got a strong “head start” by first dominating clerical, document processing and financial applications. The use of these computers spilled into the laboratory where the DOS based IBM-PC replaced mini-computers. Compared to minicomputer, the PC provided a more for cost-effective platform for applications in numerical analysis, engineering and design, instrument control, image acquisition and image processing. In addition, the sitewide use of a common PC platform could reduce the cost of training and support services relative to cases where many different computer platforms were used. This could be especially true for the microscopists who must use computers in both the laboratory and the office.

A Review of 21 iPad Applications for Augmentative and Alternative Communication Purposes

2012 ◽  
Vol 21 (2) ◽  
pp. 60-71 ◽  
Author(s):  
Ashley Alliano ◽  
Kimberly Herriger ◽  
Anthony D. Koutsoftas ◽  
Theresa E. Bartolotta
Keyword(s):  
Augmentative And Alternative Communication ◽  
Cost Effective ◽  
Alternative Form ◽  
Alternative Communication ◽  
Text To Speech ◽  
Reference Guide ◽  
Expressive Communication ◽  
Communication Needs ◽  
User Friendly ◽  
Ipad Applications

Abstract Using the iPad tablet for Augmentative and Alternative Communication (AAC) purposes can facilitate many communicative needs, is cost-effective, and is socially acceptable. Many individuals with communication difficulties can use iPad applications (apps) to augment communication, provide an alternative form of communication, or target receptive and expressive language goals. In this paper, we will review a collection of iPad apps that can be used to address a variety of receptive and expressive communication needs. Based on recommendations from Gosnell, Costello, and Shane (2011), we describe the features of 21 apps that can serve as a reference guide for speech-language pathologists. We systematically identified 21 apps that use symbols only, symbols and text-to-speech, and text-to-speech only. We provide descriptions of the purpose of each app, along with the following feature descriptions: speech settings, representation, display, feedback features, rate enhancement, access, motor competencies, and cost. In this review, we describe these apps and how individuals with complex communication needs can use them for a variety of communication purposes and to target a variety of treatment goals. We present information in a user-friendly table format that clinicians can use as a reference guide.

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