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1,077 results on '"YANG, Huanhuan"'

151. Grid generation, coupling strategies, and spatially-dependent time stepping for ocean-tidal/estuary systems and other ESM components (Final Report)

Author

Ju, Lili, primary, Wang, Zhu, additional, Gao, Huadong, additional, Hoang, Thi-Thao-Phuong, additional, Meng, Xucheng, additional, Zhou, Chynbao, additional, Gunzburger, Max, additional, Graham, Lindley, additional, Pieper, Konstantin, additional, Yang, Huanhuan, additional, Calandrini, Sara, additional, and Sockwell, Chad, additional

Published
2021
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152. Data-Driven Model Reduction for Fast, High Fidelity Atrial Electrophysiology Computations

Author

Yang, Huanhuan, Passerini, Tiziano, Mansi, Tommaso, Comaniciu, Dorin, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, van Assen, Hans, editor, Bovendeerd, Peter, editor, and Delhaas, Tammo, editor

Published
2015
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165. Grid generation, coupling strategies, and spatially-dependent time stepping for ocean-tidal/estuary systems and other ESM components (Final Report)

Author

Ju, Lili, primary, Wang, Zhu, additional, Gao, Huadong, additional, Hoang, Thi-Thao-Phuomg, additional, Meng, Xucheng, additional, Zhou, Chunbao, additional, Gunzburger, Max, additional, Graham, Lindley, additional, Pieper, Konstantin, additional, Yang, Huanhuan, additional, Calandrini, Sara, additional, and Sockwell, Chad, additional

Published
2020
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166. An Ultrawideband Low-Loss Reconfigurable Metasurface Element With 1-Bit Resolution

Author

Li, Tong, Yang, Huanhuan, Li, Qi, Tian, Jianghao, Gao, Kun, Cong, Lili, Li, Sijia, and Cao, Xiangyu

Abstract

In this letter, an ultrawideband and low-loss reconfigurable reflective metasurface element (RMSE) with 1-bit resolution is proposed. The design integrates a PIN diode with the cross-bow-tie patch to achieve 1-bit phase shift (180° ± 20°) from 6.75 to 11.25 GHz (50% relative bandwidth) using wideband techniques such as the gradient patch and parasitic shunting structure. The parasitic shunting structure significantly reduces the current flowing through the PIN diode, effectively minimizing element loss. Consequently, the proposed design achieves both an ultrawide operating bandwidth and low-loss performance. The physical mechanism is elucidated, and experiments are conducted. The experimental results align closely with simulations, validating the design's efficacy.

Published
2024
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167. A Mesh-Type Ultrawideband Low-RCS Transmitarray Antenna Based on Spoof Surface Plasmon Polariton

Author

Ji, Kefeng, Zhou, Yulong, Yang, Huanhuan, Zhang, Zhiyun, Guo, Zexu, Li, Tong, Liu, Xiaobin, and Cao, Xiangyu

Abstract

In this letter, an ultrawideband low radar cross section (RCS) transmitarray antenna is designed, which is composed of a microstrip antenna array and a transmissive metasurface based on spoof surface plasmon polariton (SSPP). The mesh-type transmissive metasurface, which consists of 4 × 4 double-cross SSPP elements, can achieve transmitting electromagnetic waves in the X-band and reduce RCS on both sides of the passband. In addition, the reflection phase difference between two adjacent elements can be regulated by the height of the SSPP structure. Thus, by means of a checkerboard array, the transmissive metasurface can scatter normal incident waves to achieve RCS reduction. Moreover, when the transmissive metasurface fed by the microstrip antenna array, good radiation performance can be achieved in the X-band. The experimental results show that the maximum gain of the transmitarray antenna is 18.6 dBi and the 3 dB gain bandwidth is 9.7–10.7 GHz. Compared with the original microstrip antenna array, the transmitarray antenna achieves RCS reduction in the ultrawideband of 4.7–12.2 GHz, with a maximum reduction of 11.98 dB and a relative bandwidth of 88.8%. Meanwhile, RCS reduction performance is still good under oblique incidence.

Published
2024
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170. Research progress on factors and mechanisms of apoptosis of bile duct epithelial cells in primary biliary cholangitis.

Author

YANG Huanhuan, YUAN Shiyu, and TANG Yingmei

Abstract

Primary biliary cholangitis (PBC) is a chronically progressive autoimmune liver disease. At present, There are limited drugs to treat PBC, and some patients eventually progress to end-stage liver disease due to poor response to drugs. The pathogenesis of PBC is not fully understood, but there is increasing evidence that apoptosis of bile duct epithelial cell (BEC) plays an important role in the pathogenesis of PBC. This article reviewed the main factors and related mechanisms affecting BEC apoptosis in PBC, aiming to provide a theoretical basis for developing new therapeutic targets, developing new drugs or proposing new therapeutic schemes for PBC patients. [ABSTRACT FROM AUTHOR]

Published
2023

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