Commercially available biocarbon (BC) derived from Miscanthus was activated by potassium hydroxide (KOH) at different BC/KOH ratios of 1:3, 1:4, and 1:5. The structural morphological changes the porosity developed in resultant products were investigated. In addition, electrochemical performance assembled electric double layer capacitors (EDLCs) incorporating these carbonaceous materials determined using galvanostatic, voltammetric, impedance spectroscopy techniques. Compared with pristine BC...

In new-generation flash memories, issues such as disturbs and data retention become more critical a consequence of reduced cell size decreased oxide thickness. Furthermore, the progressive increase in count within single die tends to decrease device reliability. particular, reliability turn out be multilevel (ML) due spacing between adjacent programmed levels. It is therefore deemed that use on-chip error correction codes (ECCs) will gain widespread acceptance large-capacity memories. ECCs...

A mixture design of experiment (DoE) was used to guide the fabrication and analysis sustainable poly(lactic acid) (PLA) biobased poly(butylene succinate) (BioPBS) 3D-printing filaments. The statistical DoE approach employed investigate correlation between mechanical properties PLA/BioPBS blends at different PLA BioPBS wt % obtain linear regression models properties. help with desired filaments composition ratios were 3D-printed via fused deposition modeling (FDM). 3D-printability polymer...

In this study, the 3D printability of a series poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/poly(lactic acid) (PLA) blends were investigated using fused filament fabrication (FFF). The studied suffered from poor due to differences in compatibility and low thermal resistance. These shortcomings addressed by incorporating functionalized styrene-acrylate copolymer with oxirane moieties as chain extender (CE). To enhance mechanical properties, synergistic effect printing parameters such...

This research compares two coating techniques (dip-coating versus bar-coating) of poly(3-hydroxy butyrate-co-3-hydroxyvalerate) (PHBV) on a biodegradable plastic sheet. A blend 30% PHBV/70% poly (butylene adipate-co-terephthalate) (PBAT) with and without chain extender was explored as sheets, while PHBV used to improve oxygen water vapor barrier properties the sheet affecting mechanical performance. The thickness nominally 10-15 μm (dip-coating) 25–35 (bar-coating). Comprehensive...

Medical conditions and cases are growing at a rapid pace, where physical space is starting to be constrained. Hospitals clinics no longer have the ability accommodate large numbers of incoming patients. It clear that current state health industry needs improve its valuable limited resources. The evolution Internet Things (IoT) devices along with assistive technologies can alleviate problem in healthcare, by being convenient easy means accessing healthcare services wirelessly. There plethora...

This research work focuses on the utilization of waste ocean plastics with agro-industrial pyrolyzed biomass to develop complex shaped value-added prototypes through additive manufacturing. Fused Filament Fabrication (FFF)-based three-dimensional (3D) printing recycled HDPE/PP blends was challenging due significant warpage-related problems during printing. Reinforcing these blend fillers played a role in efficient 3D complex-shaped objects. In this research, HDPE (70%) (rHDPE) and PP (30%)...

Wearable technology is growing in popularity, and wearable devices, such as smartwatches, are used many applications, from fitness tracking activity recognition to health monitoring. As the affordability popularity of devices increase, so does amount personal unique data that they provide. At same time, advantages microprocessor memory enable multiple physiological signal sensors integrated into collect data. After extracted, machine learning classification algorithms can help investigate...

The study focuses on the mechanical performance of a blend ocean-recycled high-density polyethylene (rHDPE) and polypropylene (rPP) explores effect adding burlap biocarbon from post-industrial waste as filler. This aims to upcycle plastic compare conventional injection molding with 3D printing. Taguchi-gray relational analysis was utilized determine preferred printing conditions for both rHDPE–rPP rHDPE–rPP–biocarbon composite. found that were raster angle 0°, speed 900 mm/min, nozzle...

Precision viticulture (PV) aims to improve the grapevine production efficiency, quality, and profitability, while reducing environmental impact. The promises of PV are realized only if large areas monitored with high spatial temporal resolutions. This paper considers integration a wireless sensor network smart unmanned aerial vehicle platform. To this end, local variations factors that influence grape yield quality measured site-specific management practices applied. approach achieves...

The recent pandemic revealed weaknesses in several areas, including the limited capacity of public health systems for efficient case tracking and reporting. In post-pandemic era, it is essential to be ready provide not only preventive measures, but also effective digital strategies solutions protect our population from future outbreaks. This work presents a contact tracing solution based on wearable devices track epidemic exposure. Our proximity-based privacy-preserving (P3CT) integrates: 1)...

In this paper, we present a circuit that protects smart cards against differential power analysis attacks. The is based on current flattening technique, designed using standard 0.18-µm CMOS technology, and can be integrated the same die or in package with card microcontroller. We evaluate performance effectiveness of protection Our transistor-level simulations Cadence environment experimental traces collected from an 8-bit microcontroller for executing DES encryptions. proposed effectively...

Colour blindness is a genetic mutation that alters the colour vision of subjects by decreasing sensitivity to certain wavelengths, depending on defect. There are many forms ranging from monochromacy (black-white) most common form, ¿red-green¿ variation where reds or greens weakened, vibrant shades easily seen and dull difficult perceive. A filter was designed based Ishihara tests in order correct blind deficiencies. This successful for seeing hidden objects within test plates but did not...

The recent pandemic forced substantial changes in our lives, including the way we interact with physical objects. For example, voice-activated systems that enable users to communicate them through speech commands are becoming more pervasive. At same time, technology developments delivered voice capability Internet of Things (IoT) devices low-power audio transducers. Voice-activated IoT have potential engage patients and caregivers new cost-efficient ways, from telehealth digital health,...

As wireless sensor networks (WSNs) increasingly attract more attention, new ideas for specific applications are continually being developed, many of which involve the energy consumption nodes. However, not much has been done to optimize quality services (QoS) WSNs. Many like target tracking require some QoS guarantees. Besides, certain factors limit ability multi-hop achieve desired goals such as delay caused by network congestion, limited and computation nodes, packet loss due interferences...

Ethanolamine and ultrapure water have negligible electrical conductivity, whereas their mixtures are electrically conductive. Their conductivity is maximum with ≈20 wt% (≈7 mol%) ethanolamine relative to water, suggesting the formation of conductive ethanolamine-water clusters. Current vs. voltage curves measured during cyclic voltammetry experiments display hysteresis mixtures, which liquid at 20⁰C. interacts oleic acid a 1:1 mol ratio produce solid, where self assembled into lamellar...

This paper presents an analysis of two types integrated charge pumps, Dickson and Fibonacci. The circuits are compared in slow-switching conditions at equal area occupation. A formula is developed for optimizing the capacitor sizes improving performance Fibonacci pump. evaluated with focus on voltage gain output resistance including effects parasitic capacitances.

Nitrogen doped biocarbon materials were effectively synthesised from distiller's dried grains with solubles (DDGS) using urea as the nitrogen source. The use of in pre-treatment DDGS on fixation elemental was investigated. Urea addition increases content obtained biocarbon, which is found to have 9.28 ± 0.67% for DDGS:Urea weight ratio 1:3. Physicochemical properties intrinsic and material investigated by employing Raman BET surface area analysis. rich 1:3 taken fabrication an...

This paper describes a power conversion and data recovery system for microwave powered sensor platform. A patch antenna, matching filter rectifier make the frontend implement RF-to-DC of carrier. The efficiency is as high 47% with an input level 250 µW at 2.45 GHz. Then, 0.18 µm CMOS integrated circuit extracts clock digital data. modified pulse amplitude modulation scheme used to modulate on GHz carrier frequency combined transmission; this allows very low consumption entire IC be less than...

In this work we study the application of charge reusing to switched-capacitor voltage multipliers. Considering three popular circuits (i.e. Dickson, heap, and Fibonacci pumps), analyze dynamic power losses due parasitic capacitances. We show how a reuse technique effectively decreases losses. The validity our analysis is verified through simulations design examples, which also illustrate impact on gain, output resistance, conversion efficiency.

In this work we propose a technique for bootstrapping CMOS switches in voltage doublers and double charge pumps. The prevents short-circuit losses, improves driving capability, enables efficient operation at low supply voltages. effectiveness of our approach is verified through simulations design examples, which also illustrate the improvements conversion efficiency, gain, output resistance.

A monolithic DC-DC boost converter with current-mode hysteretic control is designed and simulated in 0.18-μm CMOS technology. The system simple, robust, has a fast response to external changes. It does not require an clock, the output regulated by voltage feedback addition limiting inductor current sensing it. non-overlapping clock internally generated drive power switches using buffers minimize dissipation. For conversion specifications of 1.8 V 3.3 at 150 mA, overall efficiency 94.5%...

This study presents a performance comparison of two green electrostatic energy harvesters based on force‐sensitive mechanically variable capacitors. A startup battery is required in the conventional harvester to precharge capacitor. adds an extra element device and increases harvester's size weight. The proposed does not need battery, operates regenerative mode, provides similar output power. It has compact can start from low voltages. were developed using capacitors fabricated with...