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Intelligent Learning Analytics in the Healthcare Sector Using Machine Learning and IoT
Published in Govind Singh Patel, Seema Nayak, Sunil Kumar Chaudhary, Machine Learning, Deep Learning, Big Data, and Internet of Things for Healthcare, 2023
Kundankumar Rameshwar Saraf, P. Malathi
At the bottom of the bed, the compression load cell is connected. To measure patients’ weight, this load cell follows the principle of Wheatstone Bridge (strain gauge). Compression load cells are sturdy by nature. It is merely affected by unfavourable ecological conditions. The maximum load measuring capacity of this load cell is 1,000 kilograms (Kg).
Instrumented Automatic Capsule Filling Machines and Filling Machine Simulation
Published in Larry L. Augsburger, Stephen W. Hoag, Pharmaceutical Dosage Forms, 2017
Larry L. Augsburger, Vikas Moolchandani
Two types of force sensing devices are commonly employed in capsule filling machine instrumentation: resistive strain gauges and piezoelectric load cells. Strain gauges can be bonded directly to load-bearing components to form a force sensing transducer in situ. In other instances, strain gauge-based load cells or piezoelectric load cells can be installed in strategic locations to sense forces. The LVDT (Linear Variable Differential Transformer) displacement transducer has been installed on both dosator and dosing disc machines. Details of the characteristics and use of these transducers may be found in standard references such as Daly and Riley26 and Ridgway Watt.27 Because of the extensive use of resistance strain gauges in research instrumented capsule filling machines, additional information on strain gauges has been given in the example followed below.
Experimental Protocols for Generation and Evaluation of Articular Cartilage
Published in Kyriacos A. Athanasiou, Eric M. Darling, Grayson D. DuRaine, Jerry C. Hu, A. Hari Reddi, Articular Cartilage, 2017
Kyriacos A. Athanasiou, Eric M. Darling, Grayson D. DuRaine, Jerry C. Hu, A. Hari Reddi
Note: The use of protease inhibitors in the PBS is suggested to prevent sample degradation; however, it is not required. A load cell should be chosen with a range appropriate to the estimated sample properties.
Performance characterization of spring actuated autoinjector devices for Emgality and Aimovig
Published in Current Medical Research and Opinion, 2020
Zhongwang Dou, Javad Eshraghi, Tianqi Guo, Jean-Christophe Veilleux, Kevin H. Duffy, Galen H. Shi, David S. Collins, Arezoo M. Ardekani, Pavlos P. Vlachos
As the load cell moves toward the activation button, the contact force increases until it suddenly drops due to device activation. Representative force measurements from the load cell are shown in Figure 5(a,b). The maximum value of the force before activation is, therefore, the device activation force that the user needs to exert on the button. The time that corresponds to this maximum force is referenced as time = 0 s for analysis in the following sections; all other times are measured relative to this activation event. The measured activation forces are shown in Figure 5(c) with statistics, including median, interquartile range within each group, and p-values between groups. The medians for the Emgality device are below 8 N at both temperature conditions, which are consistently smaller than for Aimovig device with medians of 13 N (room temperature) and 15 N (storage temperature).
Depth-Dependent Out-of-Plane Young’s Modulus of the Human Cornea
Published in Current Eye Research, 2018
Manuel A. Ramirez-Garcia, Stephen R. Sloan, Bennett Nidenberg, Yousuf M. Khalifa, Mark R. Buckley
The mechanical test was subsequently executed as follows: 1) specimens were compressed at a constant displacement rate of 1 µm/s 23,39 until an applied compressive strain of ~11% was reached, at which time grip displacement was halted and held constant; 2) specimens were allowed to relax for 30 min (Figure 2). Our testing equipment records force measurements in real time via the load cell. Through previous calibration experiments, we determined that an applied peak force of 353 mN (corresponding to an engineering stress of 50 kPa) resulted in compressive strains close to 11% (Table 1). Fluorescence images with appropriate filters were taken every second throughout the entire experimental duration (Figure 3A). Immediately after compression was applied, unimpeded transverse slip due to transverse specimen lengthening (i.e., the Poisson effect) was observed. However, the specimens were observed to relax and transverse strain at equilibrium was small (Table 1).
Designing instrumented walker to measure upper-extremity’s efforts: A case study
Published in Assistive Technology, 2019
Mohammad Khodadadi, Mina Arab Baniasad, Mokhtar Arazpour, Farzam Farahmand, Hassan Zohoor
In the present study, by designing an appropriate instrumented walker and using motion analysis, we measured 3D forces and moments applied to upper-extremity joints including wrist, elbow and shoulder. The biomechanical experiments were carried out for a SCI patient using different types of walkers (basic walker, two-wheel walker with two different heights). Because of the higher cost in using commercial loadcells, it is desirable to design a custom multi-directional loadcell by means of strain gauges. In this approach, some technical sources were used to fabricate a multi-directional loadcell by using strain gauges in different arrangements (Hoffmann, 2012; Kim, 2004; measurementsgroup, 2001; Sommer, 2011).