Simulation of Brain-Computer Interface Based Wheelchair Controls Using Microcontroller

Humans always have the desire to control each single process in their life and looking for the simplicity to live in a comfort and peace. Many technologies have been invented because of the instinct of humans. In our daily life we need to control our body or certain parts of it. For example to walk we need to control our legs and to eat we have to control our hands and mouths, and for the whole body movements we need to have the control all over the spinal cord. But any injuries or problems happen to the spinal cord may lead to obstruction or disability

Simulation of Brain-Computer Interface Based Wheelchair Controls Using Microcontroller

Humans always have the desire to control each single process in their life and looking for the simplicity to live in a comfort and peace. Many technologies have been invented because of the instinct of humans. In our daily life we need to control our body or certain parts of it. For example to walk we need to control our legs and to eat we have to control our hands and mouths, and for the whole body movements we need to have the control all over the spinal cord. But any injuries or problems happen to the spinal cord may lead to obstruction or disability

Electrochemical reduction of CO2 into formate/formic acid: A review of cell design and operation

The release of carbon dioxide (CO2) into the atmosphere is threatening the environment and ecosystems, resulting in major challenges to sustainable development for modern industry. In this context, CO2 electrochemical reduction (CO2 ECR) is one of the most promising technologies to mitigate the effects of high CO2 content in the atmosphere. Electrochemical technology can convert CO2 into value-added chemicals including methanol, ethanol and formate. In this review, different mechanisms of CO2 electrochemical reduction into formate/formic acid are reviewed, highlighting the different cell designs. Also, the effect of cell design and operating parameters on the electrochemical reduction process are discussed. The review aims to highlight recent developments in the CO2 electrochemical cell design for formate production and provide guidelines for future advancements. Challenges of large-scale production and research gaps are also provided. 2023 The AuthorsThe authors would like to acknowledge the support of Qatar National Research Fund (a member of Qatar Foundation) through Grant # NPRP 12 C-33923-SP-102 (NPRP12 C-0821-190017). The findings achieved herein are solely the responsibility of the authors. Open Access funding provided by the Qatar National Library.Scopu

Efficient electrochemical conversion of CO2 into formic acid using colloidal NiCo@rGO catalyst

A simple approach was used to synthesize a catalyst based on colloidal NiCo with rGO support. The catalyst was uniformly deposited on acid-treated Sn foil using drop-casting method. The prepared NiCo@rGO catalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The XRD measurements confirmed the development of a homogenously immersed structure with a specific NiCo composition. The different ratios of Ni and Co in the NiCo@rGO catalyst were further confirmed by XPS and SEM-EDX. The catalyst was tested for the electrochemical reduction of CO2 to produce formic acid (HCOOH) and resulted in a significantly higher faradaic efficiency at −50 mA current compared to the simple Co nanoparticle, rGO, Sn foil, Ni nanoparticles, and NiCo composite. The colloidal NiCo bimetallic structure, combined with the rGO support on the treated Sn foil, played an important role in enhancing the catalytic activity and selectivity towards formic acid. When comparing the NiCo@rGO catalyst with other catalysts, especially Ni, Co, Sn foil, NiCo, and rGO, the NiCo@rGO catalyst showed superior CO2 electrochemical chemical reduction performance. The results suggest that the synergic effect of combining Ni with Co along with using acid-treated Sn foil as a support is responsible for the high activity towards formic acid production. The experimental results demonstrated the formation of formic acid with low energy consumption and good faradic efficiency.This work was funded by Qatar National Research Fund (a member of Qatar Foundation ) through Grant # NPRP 12 C-33923-SP-102 ( NPRP12 C-0821–190017 ). Open Access funding provided by the Qatar National Library

Data supporting ''Processing and Properties of Bar-shaped Single-seeded and Multi-seeded YBCO Bulk Superconductors by a Top Seeded Melt Growth Technique''

Data supporting the publication. The enclosed data set contains raw data connected with magnetization measurements, trapped field properties and levitation data

Data supporting ''Processing and Properties of Bar-shaped Single-seeded and Multi-seeded YBCO Bulk Superconductors by a Top Seeded Melt Growth Technique''

Data supporting the publication. The enclosed data set contains raw data connected with magnetization measurements, trapped field properties and levitation data