Search

Objective To study myopectineal orifice anatomy of the patients with inguinal groin hernia using three-dimensional imaging technology after reconstructing of myopectineal orifice. Methods Preoperative CT images of 90 patients with inguinal hernia including 79 cases with indirect, 9 cases with direct and 2 cases with femoral were collected in our hospital from March 2019 to December 2019. The data of CT imaging were imported into software for three-dimensional reconstruction. The data of myopectineal orifice anatomy after reconstruction were measured and compared after grouping of age, gender and body mass index. Results The mean total width of myopectineal orifice was(7.67±0.75) cm, length (7.34±0.38) cm, length of upper edge(5.79±0.79) cm, length of lower edge(6.57±0.50) cm, and the upper lower angle (120.10±9.36) °. Difference in total width, length, and upper edge length was statistically significant between male group and female group (P

Vehicle-to-everything (V2X) is considered a key factor in driving the future development of intelligent transport, which requires high-quality communication and fast sensing of vehicle information in high-speed mobile scenarios. However, high-speed mobility makes the wireless channel change rapidly, which requires frequent channel estimation and channel feedback between a vehicle and the roadside unit (RSU), resulting in an increase in communication overhead. At the same time, the high maneuverability of vehicles leads to frequent switching and misalignment of communication beams, so the RSU must have better beam prediction and tracking capabilities. To address this problem, this paper proposes an adaptive frame structure design scheme for sensing-assisted downlink (DL) communication. The basic idea of the scheme involves analyzing the communication model during the vehicle's movement. This analysis aims to establish a theoretical relationship between the Symbol Error Rate (SER) and the following two key factors: the vehicle's starting position and the distance it travels across. Subsequently, the scheme leverages the vehicle's position data, as detected by the RSU, to calculate the real-time SER for DL communication. The SER threshold is set based on the requirements of DL communication. If the real-time SER is below this threshold, channel estimation becomes unnecessary. This decreases the frequency of channel estimation and frees up time and frequency resources that would otherwise be occupied by channel estimation processes within the frame structure. The design of an adaptive frame structure, as detailed in the above scheme, is presented. Furthermore, the performance of the proposed method is analyzed and compared with that of the traditional communication protocol frame structure and the beam prediction-based frame structure. The simulation results indicate that the communication throughput of the proposed method can be improved by up to 6% compared with the traditional communication protocol frame structure while maintaining SER performance. [ABSTRACT FROM AUTHOR]

To uncover the evaluation information on the academic contribution of research papers cited by peers based on the content cited by citing papers, and to provide an evidence-based tool for evaluating the academic value of cited papers.

Abstract: A new complex [Ru(bpy)2(bppp)]2+ (bpy=2,2′-bipyridine, bppp=12-bromo-pyrido[2′,3′:5,6]pyrazino[2,3-f][1,10]phenanthroline) has been synthesized and characterized. The interaction of the title complex with two different forms of the human telomeric G-quadruplexes DNA was explored by means of CD spectroscopy, CD melting, fluorescent intercalator displacement (FID) and molecular docking studies. Results indicated that [Ru(bpy)2(bppp)]2+ not only induce formation of antiparallel G-quadruplex structure in the absence of metal cations, but also have the ability to stabilize the G-quadruplexes DNA. [Copyright &y& Elsevier]