Publications by authors named "H El Attar"

Enhancing the performance of 5ph-IPMSM control plays a crucial role in advancing various innovative applications such as electric vehicles. This paper proposes a new reinforcement learning (RL) control algorithm based twin-delayed deep deterministic policy gradient (TD3) algorithm to tune two cascaded PI controllers in a five-phase interior permanent magnet synchronous motor (5ph-IPMSM) drive system based model predictive control (MPC). The main purpose of the control methodology is to optimize the 5ph-IPMSM speed response either in constant torque region or constant power region.

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This case report discusses a 32-year-old woman with no significant medical history who underwent elective bilateral breast reduction with auto-augmentation and abdominoplasty. Initially, her recovery was smooth, but on the third postoperative day, she exhibited tachycardia, tachypnea, and mild shortness of breath, while other vital signs remained stable. A chest X-ray revealed pneumoperitoneum, and a subsequent abdominal CT confirmed moderate pneumoperitoneum without gastrointestinal leakage.

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Water pollution is caused by heavy metals, minerals, and dyes. It has become a global environmental problem. There are numerous methods for removing different types of pollutants from wastewater.

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Article Synopsis
  • Gastrointestinal tumors (GIST) are soft tissue tumors often found in the stomach, classified based on their location, size, and growth rate.
  • A 40-year-old woman was diagnosed with GIST after abdominal pain and underwent treatment with imatinib, but experienced severe complications leading to emergency surgery due to massive internal bleeding.
  • The case highlights that while chemotherapy can help, surgical intervention may be necessary, especially for larger GISTs, due to the high risk of complications.
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This study focuses on the development of new amino-functionalized magnetic FeO/SiO nanocomposites with varying silicate shell ratios (1:0.5, 1:1, and 1:2) for the efficient elimination of Hg ions found in solutions. The FeO/SiO-NH adsorbents were characterized for their structural, surface, and magnetic properties using various techniques, including Fourier transform infrared spectrum (FT-IR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Braunauer-Emmett-Teller (BET), thermogravimetric analysis (TGA), zeta-potential, and particle size measurement.

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