Miracle-dz/UniFAR-FTUs huggingface dataset:
High Efficiency Voltage Doubler Rectifier Design for Harvesting ambient RF Energy

The voltage-doubler (VD) rectifier circuits are the most used in the rectennas design. In this paper, a method of designing a highly efficient Schenkel VD is proposed. The choice of the rectifying diode is first established according to measurements of ambient power density carried over in the literature. By using the filter Design tool of the Advanced Design System (ADS) software, a band-pass filter is designed to ensure a good power transfer between the antenna and the rectifier circuit. The filter elements are then optimized by the gradient method search to achieve optimum performance in the GSM band. Especially for a power density of 39 nW/cm2, the designed circuit associated with a 10 dBi gain antenna shows a conversion efficiency of 55%.
Robust Image Retrieval from Phaseless Data

In this paper, we propose a robust method to reconstruct complex images from phaseless data. By approximating low-frequency coefficients of an unknown signal by spectral method, the proposed method dramatically reduces number of unknowns at the initialization stage. Consequently, the proposed method is able to reconstruct complex images with much fewer phaseless measurements, while keeping the dominant computational cost of each iteration unchanged. Further numerical simulations also show that the proposed method is stable to different initializations and noisy environments. It is expected that the proposed method will find applications in the fields where image reconstructions from phaseless measurements are needed, such as antenna diagnostics.
Approach for 10 Gb/s Silicon Integrated Optical Receiver for GPON

This paper presents our development of an integrated optical receiver based on active silicon photonic ICs for GPON solutions. The receiver core was fabricated and characterized for rates up to 10 Gb/s. The optical core is composed of a triplexer filter with integrated Ge photodetectors in the digital downstream reception at 1490 nm and in the analog video operating at 1550 nm. This approach was characterized in two levels: one focused on device, characterized through optical-electric band (OE), followed by a systemic level study, focusing on performance in data transmission through eye diagram.
A Ku-Band Wideband 3-D Printed Interdigital Bandpass Filter Free of Post Fabrication Tuning

This paper presents a Ku -band wideband 3-D printed and connectorized eighth-order interdigital bandpass filter. The filter's cavity is prototyped with a ceramic-filled resin using stereolithography apparatus. The entire surface of the cavity is metallized with a conductive layer of electroless plated copper. Under circumstance of a high-quality surface metallization, the filter's RF performance can be well achieved without post fabrication tuning. The filter prototype demonstrates in the passband of 13.6-18 GHz an average insertion loss of around 2.2 dB and an average return loss of around 10 dB.
A rare case report of craniofacial fibrous dysplasia

Fibrous dysplasia (FD) is a fibro-osseous lesion of the osseous structures of the body. The exact cause is unknown; however, recently, the cause has been reported to be postzygomatic somatic mutation in guanine nucleotide-binding protein, alpha stimulating 1 gene located at chromosome 20q13.2. The three subtypes of FD are monostotic, polyostotic and craniofacial. The term craniofacial FD (CFD) is used to describe FD where the lesions are confined to contiguous bones of the craniofacial skeleton. This report describes the case of CFD of a 20-year-old male patient who had unusual presentation involving right maxilla and frontal bone of the left side of the face. The clinical features, radiological findings and treatment have been discussed.
A Sharing-Based Approach to Enticing Tourists to Behave More Environmentally Friendly

Tourist behavior has a critical impact on the environmental sustainability of tourism. The hedonic nature of tourism and lack of an economic incentive make tourist behavior particularly hard to change. Making tourists behave more environmentally friendly would have substantial environmental benefits. This is the aim of the present study. Three alternative approaches are tested. The most successful approach—based on sharing monetary savings with guests—leads to a 42 percent change in one specific tourist behavior with negative environmental consequences. This new sharing-based approach significantly outperforms current approaches of increasing awareness of environmental consequences and of tourist ability to make a change. Tourism businesses should consider replacing current appeals with sharing-based schemes.
Performance Comparison of Doubly Salient Reluctance Generators for High-Voltage DC Power System of More Electric Aircraft

The generation performance of the switched reluctance machine (SRM)-based starter/generator (S/G) and the doubly salient electromagnetic machine (DSEM)-based S/G is analyzed and compared in this paper. The topologies, operation principles of the doubly salient electromagnetic generator (DSEG) and the switched reluctance generator (SRG) are introduced and investigated comprehensively. The copper loss and iron loss are analyzed and the loss distribution is discussed. The excitation requirement and output power quality are also compared and analyzed. The DSEG has the advantages of employing a reliable rectifier and a simple control method, while achieving higher generation efficiency and better output power quality. The foresaid reason making it a very promising option for the high-voltage DC (HVDC) power system of the more electric aircraft (MEA).
Induction of Apoptosis by Ethyl Acetate Fraction of Astragalus membranaceus in Human Non-small Cell Lung Cancer Cells

Objectives The purpose of this study is to investigate the anti-cancer effects of different fractions of Astragalus membranaceus (AM) in human non-small cell lung cancer (NSCLC) cells. Methods We isolated hexane, ethyl acetate, and butanol fractions from crude ethanol extract of AM. The cell death was examined by MTT assay and trypan blue exclusion assay. Apoptosis was detected by DAPI staining, annexin V-PI double staining and cell cycle analysis. The expression of apoptosis-related proteins and mitogen-activated protein kinases (MAPKs) was examined by western blot. Results Among various fractions of AM, the ethyl acetate fraction of AM (EAM) showed the strongest cytotoxic effect in NSCLC cells. EAM reduced the cell proliferation in a time- and dose-dependent manner in NSCLC cells. In addition, EAM induced the chromatin condensation, and increased the population of sub-G1 phase and annexin V-positive cells in a time-dependent manner, indicating that EAM induced apoptosis in NSCLC cells. Consistently, EAM enhanced the expression of cleaved caspase-8 and -9, and induced the accumulation of cleaved- poly (ADP-ribose) polymerase (PARP). Among MAPK proteins, only ERK was dephosphorylated by EAM, suggesting that ERK might be related with EAM-induced apoptosis. Conclusion Our results clearly demonstrate that EAM exhibited anti-cancer effects in NSCLC cells by induction of apoptosis. We provide a valuable evidence which suggests that AM could be a desirable therapeutic option for treatment of NSCLC.
Guidelines for DNA recombination and repair studies: Mechanistic assays of DNA repair processes

Genomes are constantly in flux, undergoing changes due to recombination, repair and mutagenesis. In vivo, many of such changes are studies using reporters for specific types of changes, or through cytological studies that detect changes at the single-cell level. Single molecule assays, which are reviewed here, can detect transient intermediates and dynamics of events. Biochemical assays allow detailed investigation of the DNA and protein activities of each step in a repair, recombination or mutagenesis event. Each type of assay is a powerful tool but each comes with its particular advantages and limitations. Here the most commonly used assays are reviewed, discussed, and presented as the guidelines for future studies.
Parametric Investigations and Demonstration of A Metasurface-Coated Ultra-wideband Monopole

This paper presents the design and experiment of an ultra-wideband monopole antenna coated by a conformal metasurface. Based on a specifically developed modal-expansion method, the dispersive property of the metasurface was tailored to achieve an ultra-wideband impedance bandwidth for an otherwise narrowband monopole. Parametric studies were conducted to reveal the impact of the metasurface properties on the performance of the monopole. Finally, the ultra-wideband metasurface-coated monopole was fabricated and characterized, showing a strong agreement between the measured and simulated results, thus confirming the proposed design.
AC Device Variability in High- $\kappa$  Metal-Gate CMOS Technology

The variability of CMOS device propagation delay is measured with a special test circuit. The circuit detects AC delay variations, as distinct from the DC effect of threshold voltage variation. The AC variability is likely due to the vertical resistance of the gate-stack. A comparison of two technologies, using gate-first and gate-last gate-stacks, shows much reduced variability of the gate-last FETs. This is attributed to the absence of interfacial dopant fluctuation and the presence of tailored metallic interfaces in gate-last technologies.
60-GHz Polarization-Diversity Compact Phased Array Antenna

A compact polarization-adjustable 2×2 phased array antenna is presented at 60 GHz frequency band. The array elements are dual-feed patch antennas fabricated using substrate technology. By adjusting the excitations of the antenna ports through the phased-array chipset, a quadri-polarization diversity antenna is achieved. The array beam can be steered for any selected polarization in both E- and H-planes. The impedance bandwidth covers all 4 WiGig frequency channels and the achieved gain at 60 GHz is 11 dBi.
Bioenergetic modulation with the mitochondria uncouplers SR4 and niclosamide prevents proliferation and growth of treatment-naïve and vemurafenib-resistant melanomas

BRAF mutations are detected in >50% of all melanomas. These mutations impair the LKB1-AMPK signaling, an important metabolic pathway associated with cell growth, proliferation and survival. Melanoma patients with BRAF mutations are usually treated with BRAF inhibitors such as vemurafenib, but responses are short-lived as drug resistant tumors metabolically switch to mitochondrial oxidative phosphorylation (OXPHOS) to escape metabolic stress-induced BRAF inhibition. Additionally, a large subset of melanoma utilizes OXPHOS in their metabolism, which can confer de novo resistance to BRAF inhibitors. Therefore, uncoupling of OXPHOS to perturb energy homeostasis and to indirectly stimulate AMPK could be a novel treatment for melanoma and to overcome intrinsic and acquired resistance to BRAF inhibitors. Here, we investigated the effects of SR4 and niclosamide, two small molecule mitochondria uncouplers, on the growth and proliferation of treatment-naïve and vemurafenib-resistant melanomas in vitro and in vivo. SR4 and niclosamide inhibited melanoma proliferation irrespective of BRAF/NRAS status. Melanomas with greater OXPHOS phenotype (higher OCR/ECAR), with LKB1 mutation, or with acquired resistance to vemurafenib displayed greater sensitivity to both uncouplers. More importantly, SR4 and niclosamide inhibited tumor growth in both treatment-naïve and vemurafenib-resistant xenograft mice models. Mechanistic studies indicate both uncouplers induced energetic stress, modulated the AMPK-mTOR pathway, and promoted apoptosis without affecting MEK-ERK MAPK signaling. These results suggest that uncouplers such as SR4 and niclosamide may be useful as first line treatment against melanoma regardless of BRAF/NRAS status, and as an adjuvant therapy for patients failing MAPK inhibitors.
Method for controlling non-labeled cell migration using the magneto-Archimedes effect

We report a cell patterning method using the magneto-Archimedes effect. With this method, we apply magnetic force to cells in an arbitrary direction at an arbitrary time, allowing patterning in two dimensions. To evaluate this method, we performed three experiments. First, we verified that cell-sized fluorescent particles are moved by the magneto-Archimedes effect. Second, we confirmed that nerve cells survive in paramagnetic solvent. Third, we then developed a setup to observe samples for 24 h while applying a magnetic force. Using this setup, we applied a magnetic force to nerve cells in the horizontal direction to move them. The results reveal that the magnetic force is sufficient to move suspended cell-sized particles.
Meta-modeling of Zookeeper and MapReduce processing

Nowadays, businesses and governments face a huge and varied amount of data that needs to be stored and analyzed. Yet, At the Big Data architecture level, the management layer is very important and plays a key role since it allows the management of different types of data. Obviously, we based this work on our previous research in which we identified the key concepts of Hadoop management through comparative studies of major Big Data distributions. Hadoop management layer is located directly above Data Sources, Ingestion and Storage layers, for which we have already proposed meta-models. In our continuous effort to achieve good results, we apply in this paper techniques related to Model Driven Engineering “MDE” to provide a universal meta-model for MapReduce processing, which is the essential component of the management layer; and also to build a meta-model for Zookeeper coordination system.
Nanocrystal-Embedded-Insulator Ferroelectric Negative Capacitance FETs With Sub-kT/q Swing

A novel nanocrystal-embedded-insulator (NEI) ferroelectric negative capacitance field-effect transistor (NCFET) is proposed and demonstrated. The NEI layer comprises orthorhombic ZrO2 nanocrystals embedded in amorphous Al2O3, as confirmed by high-resolution scanning transmission electronmicroscopy and diffraction analysis. The ferroelectric nature of NEI is proved by polarization-voltage measurements, piezoresponse force microscopy, and electrical measurements. The NEI NCFET achieves superior subthreshold swing (SS) and drive current compared with a control MOSFET with the same Al2O3 gate insulator thickness. Sub-60-mV/decade SS is also maintained through multiple DC sweeping cycles.
Metasurface Particle with Independent Transmission and Reflection Full Phase Coverage

A metasurface particle with independent transmission and reflection full phase coverage for circularly polarized waves is introduced. This particle is constituted of two parts, one controlling the power splitting and the reflection phase, and the other one controlling the transmission phase, both leveraging the Pancharatnam-Berry phase principle. Given its unique flexibility, this particle may find various applications in metasurface technology.
Beam Steering of Series-fed Patch Array Using Frequency and Phase Variation Near 76.5 GHz

The frequency scanning technique is proposed for use in the automotive radar to achieve beam steering in the elevation direction. A series-fed patch array antenna is implemented and used for validation. A two-dimensional array is formed by adding three more of the same antennas, and the beam steering capability both in the elevation and azimuth directions is demonstrated. The radiation patterns are observed nearly constant for both the frequency and phase variations as desired in the automotive radar applications.
Stem-cell therapy and platelet-rich plasma in regenerative medicines: A review on pros and cons of the technologies

Regenerative medicine encompasses new emerging branch of medical sciences that involves the functional restoration of tissues or organs caused by severe injuries or chronic diseases. Currently, there are two contending technologies that can repair and restore the damaged tissues, namely platelet-rich plasma (PRP)- and stem cell (SC)-based therapies. PRP is a component of blood that contains platelet concentrations above the normal level and includes platelet-related growth factors and plasma-derived fibrinogen. Platelets are the frontline healing response to injuries as they release growth factors for tissue repair. SCs, on the other hand, are the unspecialized, undifferentiated, immature cells that based on specific stimuli can divide and differentiate into specific type of cells and tissues. Differentiated SCs can divide and replace the worn out or damaged tissues to become tissue- or organ-specific cells with specialized functions. Despite these differences, both approaches rely on rejuvenating the damaged tissue. This review is focused on delineating the preparation procedures, similarities and disparities and advantages and disadvantages of PRP- and SC-based therapies.
Optimization of Reactively Loaded Reflectarrays via Semidefinite Relaxation

The versatile semidefinite relaxation-based optimization framework developed for near-field wireless power transfer (WPT) systems is adopted for optimization of scanned reflectarrays in the far-field. As confirmed via simulation results, the framework can be used to maximize gain by finding the optimum loading element for each antenna element. The procedure is straightforward and can also be useful for design and optimization of reconfigurable reflect- and lens arrays.
Niosome: A Promising Nanocarrier for Natural Drug Delivery through Blood-Brain Barrier

Niosomes (the nonionic surfactant vesicles), considered as novel drug delivery systems, can improve the solubility and stability of natural pharmaceutical molecules. They are established to provide targeting and controlled release of natural pharmaceutical compounds. Many factors can influence on niosome construction such as the preparation method, type and amount of surfactant, drug entrapment, temperature of lipids hydration, and the packing factor. The present review discusses about the most important features of niosomes such as their diverse structures, the different preparation approaches, characterization techniques, factors that affect their stability, their use by various routes of administration, their therapeutic applications in comparison with natural drugs, and specially the brain targeting with niosomes-ligand conjugation. It also provides recent data about the various types of ligand agents which make available active targeting drug delivery to the central neuron system. This system has an optimistic upcoming in pharmaceutical uses, mostly with the improving availability of innovative schemes to overcome blood-brain barrier and targeting the niosomes to the brain.
Fault Analysis of Dual Rotor Permanent Magnet Flux Switching Machine

Dual Rotor Permanent magnet flux switching machines are required where high orque density and plenty of driving modes are required. The dual-rotor PMFSM consists of a single stator shared by an inner rotor and outer rotor. A magnetic coupling exists between the inner and outer rotors, which makes this machine less fault tolerant and reduces its performance. The previous knowledge of behavior of machine under different fault conditions is the basis of evaluation of the effects of faults on the machine. The main parameters of the machine whose transient behaviors must be studied under fault conditions are voltage, current and torque. Phase open circuit, phase short circuit, high impedance, magnet falling off and demagnetization faults are simulated using JMAG (FEA) tool.
Urban Rail Transit Power System Integrated with Electric Vehicles Based on CLLC Resonant and Buck-boost Converter

In urban rail transit system, braking energy of trains is of large scale, but it has not been used sufficiently. Most of the energy has been wasted on resistors. To smooth the fluctuation of traction grid and reduce the loss, various energy feedback methods and energy storage devices are applied in the system. Accompanied by the development and popularity of electric vehicle (EV), the energy storage capacity of it can be used in urban rail system. In this study, a novel architecture combining electric vehicles with urban rail transit is put forward, which absorbs braking energy nearby. By applying cascaded power transmission unit based on CLLC bidirectional resonant converter and buck-boost non-isolation converter, orderly power flows are allowed and power supply is more flexible with a small volume and high efficiency.
A K-means clustering based frequency shift correction method for OTHR

According to the operation mode of sky wave over-the-horizon radar(OTHR), the detection of targets is greatly affected by the ionosphere. The instability of the ionosphere causes a variety of distortions and contaminations of the echo signal. Here we propose a method based K-means Clustering to correct doppler frequency shift in the range-doppler domain. Extensive experiments using measured data show the efficiency of the proposed approach. Besides, we also compare the algorithm with other method.
Reconfigurable Quadrifilar Helical Antenna

A quadrifilar helical antenna with polarization and pattern reconfigurabilities is proposed. The proposed antenna consists of a reconfigurable radiator and a switchable feeding network. The radiator combines two individual QHAs which can be alternatively activated. The feeding network provides switchable quadrature excitations to the radiator. By controlling the PIN diodes, the antenna can provide RHCP/LHCP waves with broadside/backfire radiation patterns. Simulated results show that the proposed antenna obtained wide impedance and axial-ratio bandwidths (18.6% and 44.2%, respectively) with a compact size (0.26 λ0×0.26 λ0×0.23 λ0).
Planar SIW Horn Antenna with Improved Matching at 94 GHz

This paper describes a planar substrate integrated waveguide (SIW) horn antenna at 94 GHz which is fed through a coplanar waveguide (CPW) structure using an inset feed technique. The dielectric slabs printed on the same substrate are introduced as a matching network between the air and the proposed structure. The overall size of the antenna is 40 × 20 × 0.59 mm3, The radiation efficiency of the simulated antenna is 77.25% having a gain up to 7.62 dBi at the desired frequency band.
Harmonics Suppression for Pulsed Power Loads for DC Power System

Pulsed power loads are widely used in electric power system, such as electrical brake system, laser radar and so on, which bring about significant harmonic pollution. The harmonic pollution will decline the power quality, damage sensitive load, and even cause system instability. To decrease the impact of pulsed power loads, effective measures should be taken to absorb these harmonics. In this paper, different power storage units are compared first. Then, several solutions are proposed and designed. Finally, based on a case-study, the simulation results of each solution are provided and compared and the weights of each solution are estimated. With these results, the advantages and disadvantages of each solution are concluded.
Analysis of Edge Detection for the Clusters in Radio Propagation Channel

Channel modeling is an important research field in radio propagation, whereas clustering is one of key processes in the channel modeling. In this paper, edge detection algorithm is firstly applied for the clusters of signal in radio propagation channels, which can recognize the clusters with low computation cost. In the proposed algorithm, the clusters are detected based on the distribution of signals' amplitude. Besides, different operators for edge detection are conducted and compared to validate the performance of edge detection for the clusters.