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Your search keyword '"Li, Zhi‐yu"' showing total 418 results
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418 results on '"Li, Zhi‐yu"'

103. Lactate dehydrogenase is a prognostic indicator in patients with hepatocellular carcinoma treated by sorafenib: results from the real life practice in HBV endemic area

Author

Li, Mu-xing, primary, Zhao, Hong, additional, Bi, Xin-yu, additional, Li, Zhi-yu, additional, Yao, Xue-song, additional, Li, Huai, additional, Huang, Zhen, additional, Han, Yue, additional, Zhou, Jian-guo, additional, Zhao, Jian-jun, additional, Zhang, Ye-fan, additional, Zhao, Dong-bin, additional, and Cai, Jian-qiang, additional

Published
2016
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105. On the interaction between turbulent vortex rings of a synthetic jet and porous walls.

Author

Xu, Yang, Li, Zhi-Yu, Wang, Jin-Jun, and Yang, Li-Jun

Subjects
*PARTICLE image velocimetry, *TURBULENT jets (Fluid dynamics), *KINETIC energy, *SHEAR walls
Abstract

Time-resolved particle image velocimetry was applied to investigate turbulent vortex rings generated by a synthetic jet impacting porous walls. By varying the nondimensional diameter of the hole ( d h * = 0.067–0.20), we chose four porous walls with a constant porosity (ϕ = 75%) to examine the effect of their geometry on this vortex rings/porous wall interaction. In upstream flow, the strength of the wall shear layer induced by the vortex rings decreased as d h * increased, and so did the radial spreading of the primary vortex ring. In downstream flow, with an increase in d h * , the coherence of the transmitted vortex rings gradually weakened owing to insufficient vorticity cancellation and enhanced Kelvin-Helmholtz (K–H) instability. For d h * = 0.20 (the largest hole diameter), the transmitted vortex rings downstream were the most disrupted and lost coherence quickly to survive the shortest axial distance. The results of velocity triple decomposition show that in the case of the impact of a turbulent synthetic jet on a porous wall, the wall can effectively reduce the ratio of fluctuation energy to total flow kinetic energy. Because of the low contribution of fluctuation energy to the total kinetic energy, the porous wall with the largest hole ( d h * = 0.20) exhibited the best quality of the downstream flow field. Therefore, for flow control, we propose using a porous wall with a hole of a large diameter to effectively disrupt vortical structures and achieve a better quality of flow under the given conditions. [ABSTRACT FROM AUTHOR]

Published
2019
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107. The Two Nuclei ofGiardiaEach Have Complete Copies of the Genome and Are Partitioned Equationally at Cytokinesis

Author

Li Zhi Yu, C. William Birky, and Rodney D. Adam

Subjects
Giardiasis, Cell division, Gene Dosage, Biology, Transfection, medicine.disease_cause, Microbiology, Genome, Gene dosage, Article, S Phase, Plasmid, medicine, Animals, Humans, Giardia lamblia, Molecular Biology, Gene, Cell Nucleus, Genetics, Nucleic Acid Hybridization, General Medicine, DNA, Protozoan, medicine.anatomical_structure, Microscopy, Fluorescence, DNA Probes, Genome, Protozoan, Nucleus, Cell Division, Cytokinesis
Abstract

Giardia lambliais medically important as a cause of diarrhea and malabsorption throughout the world and is thought to be one of the earliest-branching eukaryotes on a phylogenetic tree. Nevertheless, the mechanisms of inheritance are largely unknown. The trophozoites ofGiardiaand other diplomonads are interesting in their possession of two nuclei that are identical or similar in several respects. They replicate at nearly the same time, have similar quantities of DNA, and are both transcriptionally active. We used fluorescence in situ hybridization to demonstrate that genes from each of the five chromosomes are found in both nuclei, confirming that each nucleus has at least one complete copy of the genome. This raises a second question. The alleles of a gene in different nuclei are expected to accumulate different mutations, but surprisingly, the degree of heterozygosity in a clone is very low. One possible mechanism for eliminating sequence differences between nuclei is that each daughter cell receives two copies of the same nucleus at cell division. We used trophozoites with a plasmid transfected into a single nucleus to demonstrate that the two nuclei are partitioned equationally at cytokinesis. The mechanism(s) by which homozygosity is maintained will require further investigation.

Published
2002

110. Prognostic Value of Lymph Node Ratio in Patients Receiving Combined Surgical Resection for Gastric Cancer Liver Metastasis

Author

Li, Mu-Xing, primary, Jin, Zheng-Xiong, additional, Zhou, Jian-Guo, additional, Ying, Jian-Ming, additional, Liang, Zhi-Yong, additional, Mao, Xin-Xin, additional, Bi, Xin-Yu, additional, Zhao, Jian-Jun, additional, Li, Zhi-Yu, additional, Huang, Zhen, additional, Zhang, Ye-Fan, additional, Li, Yuan, additional, Chen, Xiao, additional, Hu, Xu-Hui, additional, Hu, Han-Jie, additional, Zhao, Dong-Bing, additional, Wang, Ying-Yi, additional, Cai, Jian-Qiang, additional, and Zhao, Hong, additional

Published
2016
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115. Photonic Band Gap Structures with Periodically Arranged Atoms in a Two-Dimensional Photonic Crystal

Author

LI Zhi-Yu, Chen Fang, and Zhou Jian-Ying

Subjects
Materials science, Absorption spectroscopy, Band gap, business.industry, Atom, General Physics and Astronomy, Optoelectronics, Physics::Atomic Physics, Polarization (waves), business, Yablonovite, Molecular physics, Photonic crystal
Abstract

Linear transmission, reflection and absorption spectra for a new two-dimensional photonic crystal with periodically arranged resonant atoms are examined. Numerical results show that a twin-gap structure with forbidden bands displaced from a non-doped bandgap structure can be produced as a result of atomic polarization. The absorption spectrum is also significantly altered compared to the single atom entity.

Published
2005

116. Two new prenylflavonoids from Morus alba.

Author

Gao, Li, Li, Yuan-Dong, Zhu, Bao-Kun, Li, Zhi-Yu, Huang, Li-Bin, Li, Xian-Yi, Wang, Fei, Ren, Fu-Cai, and Liao, Tou-Gen

Subjects
CHROMATOGRAPHIC analysis, FLAVONOIDS, HIGH performance liquid chromatography, MASS spectrometry, MOLECULAR structure, NUCLEAR magnetic resonance spectroscopy, RESEARCH funding, PLANT extracts
Abstract

Two new prenylflavonoids, morusalbols A and B (1and2), were isolated from the branches and leaves ofMorus alba, together with three known compounds, kuwanon C (3), morusin (4), morusinol (5). The structures of these two prenylflavonoids were elucidated by extensive analyzes of the spectroscopic data. [ABSTRACT FROM PUBLISHER]

Published
2018
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117. Design and thermal-analysis of a slotted waveguide antenna array for W-band applications

Author

Zhang Sheng-hua, Li Xu-ping, Li Zhi-yu, and Yang Ya-bing

Subjects
Beam waveguide antenna, Engineering, business.industry, Phased array, Reflective array antenna, Antenna measurement, Collinear antenna array, law.invention, Antenna array, Hardware_GENERAL, law, Electronic engineering, Dipole antenna, business, Slotted waveguide
Abstract

In this paper, the design of a W-band slotted waveguide antenna array developed recently on the background of millimeter mave missle-borne radar seeker is introduced. The emphasis of this research is on combing electromagnetism design with thermal-analysis technology, presents a practical method of describes a way how to design W-band missle-borne antenna array and improve the performance of the array efficiently. To verify the effectiveness of this method, a W-band slotted waveguide antenna array was successfully simulated, fabricated and measured. The results of numerical simulation and experimental measurement for the proposed array show that the simulated data are approximately consistent with the measured ones in the desired W-band. Additionally, by the technology of thermal analysis based on simulated software, the influence of the working temperature on the property of the material and designed array was also deeply studied.

Published
2012

123. Prognostic value of the albumin-bilirubin grade in patients with hepatocellular carcinoma: Validation in a Chinese cohort.

Author

Li, Mu‐xing, Zhao, Hong, Bi, Xin‐yu, Li, Zhi‐yu, Huang, Zhen, Han, Yue, Zhou, Jian‐guo, Zhao, Jian‐jun, Zhang, Ye‐fan, and Cai, Jian‐qiang

Subjects
LIVER cancer, RECEIVER operating characteristic curves, MEDICAL sciences, DATA analysis, LIKELIHOOD ratio tests, PROGNOSIS
Abstract

Aim The prognostic value of the newly raised objective liver function assessment tool, the albumin-bilirubin (ALBI) grade, in patients with hepatocellular carcinoma has not been fully validated. We aimed to compare the performance of ALBI grade with the specific Child-Pugh (C-P) score in predicting prognosis in this study. Methods The clinical data of 491 C-P class A patients who underwent liver resection as initial therapy from January 2000 to December 2007 in Cancer Hospital, Chinese Academy of Medical Sciences (Beijing, China) were retrospectively analyzed. The prognostic performances of ALBI and C-P score in predicting the short- and long-term clinical outcomes were compared. Results The ALBI score gained a significantly larger area under the receiver operating characteristic curve for predicting the occurrence of severe postoperative complications than that of C-P score. With a median follow-up of 57 months, the 1-year, 3-year, and 5-year overall survival rates of the patients were 92.1%, 65.8%, and 45.2%, respectively. Tumor number, tumor size, and ALBI grade were proved to be the independent prognostic factors for overall survival in the multivariate analysis. Prognostic performance was shown to be better for ALBI grade when it was compared to C-P score in terms of both the Akaike information criterion value and χ2 value of likelihood ratio test. Conclusions The ALBI grade, which was featured by simplicity and objectivity, gained a superior prognostic value than that of C-P grade in patients with hepatocellular carcinoma who underwent liver resection. Future well-designed studies with larger sample sizes are warranted. [ABSTRACT FROM AUTHOR]

Published
2017
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124. Antioxidant Efficacy of Protein Hydrolysates from Large Yellow Croaker ( Pseudosciaena crocea ) in D-galactose-Induced Aging Mice.

Author

Zhang, Chong, Zhang, Ning Ning, Li, Zhi Yu, Tian, Yu Ting, Zhang, Long Tao, and Zheng, Bao Dong

Subjects
PROTEIN hydrolysates, HYDROLYSIS, VITAMIN E in the body
Abstract

The antioxidant efficacy of protein hydrolysates prepared from large yellow croaker (Pseudosciaena crocea) by enzymatic hydrolysis using neutral protease was evaluated in D-galactose-induced aging mice. Animals were divided into normal and model control groups, and low-, middle-, and high-dose groups (50, 100, and 300 mg/kg; LYCHs), as well as tocopherol (VE) and antagonistic (LYCHs + VE) groups. The study was carried out for 30 days. Administration of D-galactose induced oxidative damage with a significant rise (p< 0.01) in malondialdehyde and a reduction in several endogenous antioxidant enzymes and glutathione (GSH). Treatment with large yellow croaker protein hydrolysates stimulated an increase in superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase activities, increased levels of reduced glutathione, and decreased malondialdehyde, compared with the model control group. Additionally, hepatocellular damage was evaluated by measuring aspartate aminotransferase and alanine aminotransferase levels. These results demonstrate the protective role of large yellow croaker protein hydrolysates in D-galactose-induced oxidative stress, as well as their potential as nutraceuticals or adjuvant agents for disease prevention. [ABSTRACT FROM PUBLISHER]

Published
2017
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130. The Synthetic Melanocortin (CKPV)2 Exerts Anti-Fungal and Anti-Inflammatory Effects against Candida albicans Vaginitis via Inducing Macrophage M2 Polarization

Author

Ji, Hai-xia, primary, Zou, Yu-lian, additional, Duan, Jing-jing, additional, Jia, Zhi-rong, additional, Li, Xian-jing, additional, Wang, Zhuo, additional, Li, Li, additional, Li, Yong-wen, additional, Liu, Gen-yan, additional, Tong, Ming-Qing, additional, Li, Xiao-yi, additional, Zhang, Guo-hui, additional, Dai, Xiang-rong, additional, He, Ling, additional, Li, Zhi-yu, additional, Cao, Cong, additional, and Yang, Yong, additional

Published
2013
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