Accurate detection of the End-Diastolic (ED) and End-Systolic (ES) frames of a cardiac cycle are significant factors that may affect the accuracy of abnormality assessment of a ventricle. This ...process is a routine step of the ventricle assessment procedure as most of the time in clinical reports many parameters are measured in these two frames to help in diagnosing and dissection making. According to the previous works, the process of detecting the ED and ES remains a challenge in that the ED and ES frames for the cavity are usually determined manually by review of individual image phases of the cavity and/or tracking the tricuspid valve. The proposed algorithm aims to automatically determine the ED and ES frames from the four Dimensional Echocardiographic images (4DE) of the Right Ventricle (RV) from one cardiac cycle. This method gives an accurate determination for the ED and ES frames, hence avoid the need for time consuming, expert contributions during the process of computing the cavity stroke volume.
Nanoparticles are used in a variety of industries, including biomedicine, food science, energy and environmental engineering, and petroleum. Efficient and effective nanoparticle separation techniques ...are needed to ensure progress in these fields. Conventional separation techniques such as ultracentrifugation, filtration, chromatography, and selective precipitation are not continuous and require external energy sources. On the other hand, microfluidics is a simple, inexpensive, and continuous technique for the effective separation of nanoparticles. In this work, we built a graphene oxide (GO)-coated COC pillar-based microfluidic separation device and studied the effect of GO coating on silica nanoparticle deposition.
Computer security has a significant importance in today's world. Encryption and decryption of sensitive and important data are required for everyday tasks including electronic, data communications, ...and internet transactions. A large number of encryption and decryption algorithms have been developed in literature to fulfil the job. Many of these algorithms have been standardized. This paper examines the ThreeFish tweakable block cipher and provides an efficient field programmable gate array hardware implementation of the ThreeFish-256, ThreeFish-512, and ThreeFish-1024 encryption and decryption algorithms. Experimental results are provided and comparisons with the state of the art implementations are made. Experimental results illustrate the efficiency of the proposed implementation. PUBLICATION ABSTRACT
Computer security has a significant importance in today's world. Encryption and decryption of sensitive and important data are required for everyday tasks including electronic, data communications, ...and internet transactions. A large number of encryption and decryption algorithms have been developed in literature to fulfil the job. Many of these algorithms have been standardized. This paper examines the ThreeFish tweakable block cipher and provides an efficient field programmable gate array hardware implementation of the ThreeFish-256, ThreeFish-512, and ThreeFish-1024 encryption and decryption algorithms. Experimental results are provided and comparisons with the state of the art implementations are made. Experimental results illustrate the efficiency of the proposed implementation.
AC electrical field for the isolation of cancer cells Waheed, Waqas; Alazzam, Anas; Abu-Nada, Eiyad ...
2018 9th International Conference on Information and Communication Systems (ICICS),
2018-April
Conference Proceeding
A novel microdevice for the continuous separation of cancer cells from blood is presented. The device is made from two parts, glass substrate where an array of electrodes is deposited and a PDMS ...layer that includes a microchannel. The microsystem uses non-uniform electric field to control the movement of living cells inside a microchannel that has one inlet and two outlets. MDA-MB-231 breast cancer cells are successfully separated to a different sub-channel down the stream using non-uniform electric field generated by the layer of electrodes deposited at the bottom side of the microchannel. Numerical and experimental results for the separation of cells are presented.
Energy harvesting or energy conversion from ambient sources present in the environment is essential to augment or replace traditional energy sources (batteries), especially for mobile devices. This ...will diversify the energy sources, reduce maintenance, save on cost, and provide near-perpetual operation of the devices. In this contribution, a Triboelectric nanogenerator (TENG) based on silane-coupled Linde type A/Polydimethylsiloxane (LTA/PDMS) is realized for harsh environmental conditions. The silane-coupled LTA/PDMS-based TENG can produce a high output power density of 42.6µW/cm2 at a load resistance of 10 MΩ and operate at an open-circuit voltage of 120V, a short-circuit current of 15µA, with an active area of 9 cm2 under the damping frequency of 14Hz. Furthermore, the device shows ultra-robust and stable cyclic repeatability for more than 30,000 cycles and good device endurance with excellent performance for 7-day continuous testing. Moreover, it has been demonstrated that the proposed TENG has a robust and stable performance under adverse environmental conditions, such as temperature in a range of 25 to 100oC and humidity in a range of 40 to 100% RH. Furthermore, the fabricated TENG is used for the physiological monitoring and charging of commercial capacitors to drive low-power electronic devices. Hence, these results suggest that the silane-coupled LTA/PDMS approach can fabricate ultra-robust TENG for harsh environmental conditions and is also an effective way towards wearable self-powered microelectronic devices.
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•This work presents a facile approach to develop environmentally stable silane-coupled LTA/PDMS-based TENG by a dip-coating method using a two-silane component strategy.•The TENG device generates an open-circuit voltage of 120V, a short circuit current of 14µA, an instantaneous power density of 42.6 uW/cm2, and stable performance for more than 60,000 cycles.•The silane-coupled LTA/PDMS-based TENG demonstrates high output Energy Conversion Efficiency (η) of 38.6% with electrical energy (EElectrical) of 1.536 mJ and kinetic energy (Ek) of 3.96 mJ.•The silane-coupled LTA/PDMS approach can be used to fabricate TENG for self-powered and wearable microelectronic devices.
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