Mohammad Reza

Abstract In this randomized controlled trial, we assessed the effects of three consecutive intra-silicone oil (SO) injections of

Abstract: The Transformer architecture has emerged as the dominant choice for building large language models (LLMs). However, with new LLMs emerging

Abstract Traumatic brain injury (TBI) frequently leads to cognitive impairments.

Introduction As developers, we carry mental models and habits from one language to...

Abstract Trace elements, specifically magnesium (Mg), zinc (Zn), and selenium (Se) have been linked with immunomodulatory properties.

Neurodevelopmental status is a crucial criterion for evaluating a range of children's abilities, including cognition, fine and gross motor

Purpose To report a case of subconjunctival dirofilariasis presenting as an inflammatory mass-like lesion in a healthy individual. Case presentation A 20-year-old male with a recent history of wildlife exposure in a rural village presented with an inflammatory subconjunctival mass in his left eye. The lesion was surgically excised, and histopathological examination confirmed the presence of an immature nematode of Dirofilaria immitis. The patient was treated with oral ivermectin for two weeks postoperatively. After two months, the lesion had almost completely resolved, and no recurrence was observed during the 6-month follow-up. Conclusions Given the rarity of ocular dirofilariasis and its diverse presentations in different ocular and adnexal structures, prompt and complete excision followed by meticulous histopathological evaluation is crucial to guide appropriate management and achieve favorable outcomes.

In an autonomous robotic space debris removal mission, an essential sensor used for navigation is an FMCW radar designed for close-range relative navigation. To achieve the required range performance, minimizing RF leakage between the transmitter (Tx) and receiver (Rx) antennas is essential for the accurate detection of the range and velocity of the targeted space debris. Antennas positioned above the metallic satellite front face are highly susceptible to RF leakage, primarily caused by surface current propagation and lateral waves traveling parallel to the platform. This study presents two lightweight, single-layer planar metamaterials—a novel compact electromagnetic bandgap (EBG) and a non-uniform high-impedance surface (HIS)—optimized to suppress both surface waves and interact with space waves within the 9.3–9.8 GHz frequency range. These designs address strict size, weight, and power (SWaP) constraints while ensuring compatibility with extreme space conditions and resistance to mechanical shocks. Experimental validation indicates that a minimum Tx/Rx isolation improvement of 10 dB is achieved using the HIS, and 20 dB is achieved using the EBG across the radar's operational bandwidth (5%).

Abstract Background Helicobacter pylori infection causes gastritis, peptic ulcers, and gastric cancer.

Abstract: Let G V E be a simple graph of order n and size m . A connected edge cover set of a graph