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1,648 results on '"Yu, Xiaoli"'

168. Mechanical properties and tissue damage caused by staples in gastrointestinal anastomosis.

Author

Dai, Xuan, Zheng, Junjie, Yu, Xiaoli, Liu, Zhihua, Zheng, Lijuan, Chen, Zhihua, and Wang, Chengyong

Abstract

Gastrointestinal surgery using a stapler is usually associated with tissue damage, anastomosis leakage, bleeding, and other complications, which is one of the effective methods for treating digestive tract cancer. The cutting properties of staples and the tissue damage occurring in the process of stapling porcine esophageal and gastric tissues have been evaluated and a new type of stapler has been designed. Since different structural and mechanical properties esophageal and gastric tissues layers, the puncturing force exhibits a fluctuating trend. Compressive stress caused by the bending of the staple legs can lead to the destruction of the vascular network inside the tissue, tissue deforms and tears. Finally, a staple with an internal incision arc (IIA) tip is designed, which meeting the performance requirements. [ABSTRACT FROM AUTHOR]

Published
2024
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169. Habitat Filtering Covers the Strength of Density Dependence and Functional Density Dependence on Seedling Survival in Cangshan Mountain, Southwest China.

Author

Feng, Zhe, Wu, Junjie, Sun, Jiwen, Yu, Xiaoli, Wang, Liping, Chen, Fengxian, and Hu, Xiaokang

Subjects
DENSITY, HABITATS, COEXISTENCE of species, WOODY plants
Abstract

Conspecific negative density dependence (CNDD) is an important mechanism for species coexistence and community dynamics. Phylogenetic negative density dependence (PNDD) and functional negative density dependence (FNDD) are extensions of CNDD, and many studies have shown that they have become powerful and reliable methods for exploring the mechanisms of species coexistence. However, most studies have focused on only one or two of these mechanisms and have not considered whether and how habitat variables affect the detection of these density dependences. To investigate the relative importance of these mechanisms, we set up three 0.09 ha dynamic plots at Cangshan Mountain in southwest China, and used generalized linear mixed models to analyze how the survival of 546 woody plant seedlings was affected by neighborhood density and habitat variables. Our results showed that heterospecific seedling density dependence and functional trait density dependence played key roles in seedling survival. Habitat factors, phylogenetic densities, and adult neighbors had no significant effect on seedling survival in the three plots. However, habitat filtering covered the detection of density dependence and functional trait density dependence. Our study demonstrates that failure to control for habitat variables may obscure the importance of density dependence and functional trait density dependence on seedling survival. [ABSTRACT FROM AUTHOR]

Published
2024
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172. Chemical Weathering Intensity as a Reliable Indicator for Southwest Summer Monsoon Reconstruction: Evidence From Clay Minerals of Qionghai Lake Sediments Since the Last Glacial Maximum

Author

Yu, Xiaoli, primary, Wang, Gen, additional, Zhang, Ting, additional, Ma, Xueyun, additional, Zhang, Xiaomei, additional, Li, Lun, additional, Li, Zelong, additional, Guo, Zengguang, additional, Wei, Zhifu, additional, Wang, Yongli, additional, and Zhou, Shixin, additional

Published
2023
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178. Technical Prevention of Radiation-induced Cardiovascular Toxicity

Author

WANG Xuanyi and YU Xiaoli

Subjects
radiotherapy, radiation-induced cardiovascular toxicity, cardiac sparing technique, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Radiotherapy has been an important component of cancer treatment. In the malignancy with long survival, radiation-induced cardiovascular toxicity significantly jeopardize patients' outcome. Despite that its pathophysiological mechanism is not clear yet, many studies have confirmed the positive correlation between cardiovascular involvement dose, irradiated volume and radiation-induced cardiotoxicity. Therefore, reducing cardiovascular involvement dose as well as irradiated volume is the key to cardiac sparing techniques in radiotherapy. Cardiac sparing techniques includes: (1) methods that reduce radiation fields and dose; (2) methods that increase the distance between heart and irradiated fields; (3) new techniques such as intensity modulated radiotherapy and proton therapy. Although researches in dosimetry have showed that cardiac sparing techniques could lower cardiovascular involvement dose and irradiated volume, further validation is needed for curative effect.

Published
2018
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