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Your search keyword '"Li, Si Han"' showing total 137 results
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137 results on '"Li, Si Han"'

1. Genuinely accessible and inaccessible entanglement in Schwarzschild black hole

Author

Wu, Shu-Min, Teng, Xiao-Wei, Li, Jin-Xuan, Li, Si-Han, Liu, Tong-Hua, and Wang, Jie-Ci

Subjects
General Relativity and Quantum Cosmology, Quantum Physics
Abstract

The genuine entanglement of Dirac fields for an N-partite system is investigated in Schwarzschild spacetime and the analysis is carried out using the single-mode approximation. Due to the Hawking effect, quantum entanglement is divided into two parts physically accessible and inaccessible entanglement. We obtain a general analytic expression of genuine N-partite entanglement that includes all accessible and inaccessible entanglement in a Schwarzschild black hole. Unlike bosonic entanglement, the accessible N-partite entanglement of Dirac fields monotonically decreases to a nonzero value with the Hawking temperature. Interestingly, the inaccessible N-partite entanglement is a monotonic or non-monotonic function of the Hawking temperature, depending on the ratio between accessible and inaccessible modes, in contrast to bipartite or tripartite entanglement that is only a monotonic function of the Hawking temperature. Finally, we obtain two restrictive relationships for the quantum information of the black hole. This conclusion provides a new understanding of Hawking effect of the black hole., Comment: 14 pages, 1 figure

Published
2023

7. Equitable infrastructure: Achieving resilient systems and restorative justice through policy and research innovation

Author

Giovannettone, Jason P, primary, Macey, Gregg P, additional, AghaKouchak, Amir, additional, Barbato, Michele, additional, Capehart, William J, additional, Ganguly, Auroop R, additional, Hall, Mital, additional, Helgeson, Jennifer F, additional, Li, Si Han, additional, Wu, Teng, additional, Yan, Guirong, additional, and Vahedifard, Farshid, additional

Published
2024
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15. Applying Resistant Starch to Improve the Gel and Water Retention of Reduced-Fat Pork Batter.

Author

Xie, Chun, Liu, Guang-Hui, Liang, Ming-Hui, Li, Si-Han, and Kang, Zhuang-Li

Subjects
STARCH, FAT content of pork, HYDROGELS, MEAT texture, RHEOLOGY
Abstract

Emulsified meat products contain high animal fat content, and excessive intake of animal fat is not good for health, so people are paying more and more attention to reduced-fat meat products. This study investigated the impact of varying proportions of pork back-fat and/or resistant starch on the proximate composition, water and fat retention, texture properties, color, and rheology characteristic of pork batter. The results found that replacing pork back-fat with resistant starch and ice water significantly decreased the total lipid and energy contents of cooked pork batter (p < 0.05) while improving emulsion stability, cooking yield, texture, and rheology properties. Additionally, when the pork back-fat replacement ratio was no more than 50%, there was a significant increase in emulsion stability, cooking yield, hardiness, springiness, cohesiveness, chewiness, and L* and G' values (p < 0.05). Furthermore, resistant starch and ice water enhanced myosin head and tail thermal stability and increased G' value at 80 °C. However, the initial relaxation times significantly decreased (p < 0.05) and the peak ratio of P21 significantly increased from 84.62% to 94.03%, suggesting reduced fluidity of water. In conclusion, it is feasible to use resistant starch and ice water as a substitute for pork back-fat in order to produce reduced-fat pork batter with favorable gel and rheology properties. [ABSTRACT FROM AUTHOR]

Published
2024
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29. Prognostic value of long non-coding RNA CRNDE in gastrointestinal cancers: a meta-analysis

Author

He, Tian-Yu, Li, Si-Han, Huang, Jin, Gong, Ming, and Li, Guang

Subjects
long non-coding RNA, clinical pathological features, Review, prognosis, colorectal neoplasia differentially expressed, gastrointestinal cancers
Abstract

Purpose Numerous studies have reported that the long non-coding RNA colorectal neoplasia differentially expressed (CRNDE) plays important roles in the tumorigenesis, progression, and prognosis of various types of cancer. However, thus far, a systematic analysis of CRNDE in cancers of the digestive system has not been conducted. Thus, the aim of this meta-analysis was to explore the relationship between CRNDE expression and survival or the clinicopathological features of gastrointestinal cancer. Methods Eligible studies were collected from nine databases (ie, PubMed, Medline, Embase, Cochrane Library, Ovid, Science Citation Index Expanded, China Biology Medicine, Chinese National Knowledge Infrastructure, and Wanfang). The meta-analysis was conducted using the Stata SE.12 Software. The pooled hazard ratio (HR) or odds ratio (OR) with a 95% confidence interval (Cl) was used to assess the clinical value of CRNDE expression in gastrointestinal cancers. Results A total of 1,053 patients from nine articles were selected. The analysis provided evidence suggesting a significant negative correlation between high CRNDE expression and the rate of overall survival [HR=1.92, 95% CI (1.40–2.64), p5 cm [OR=2.81, 95% CI (1.62–4.88), p

Published
2019

30. Accelerating Relevance Vector Machine for Large-Scale Data on Spark

Author

Liu Fang, Zhong Hao, and Li Si-Han

Subjects
Information technology, T58.5-58.64
Abstract

Relevance vector machine (RVM) is a machine learning algorithm based on a sparse Bayesian framework, which performs well when running classification and regression tasks on small-scale datasets. However, RVM also has certain drawbacks which restricts its practical applications such as (1) slow training process, (2) poor performance on training large-scale datasets. In order to solve these problem, we propose Discrete AdaBoost RVM (DAB-RVM) which incorporate ensemble learning in RVM at first. This method performs well with large-scale low-dimensional datasets. However, as the number of features increases, the training time of DAB-RVM increases as well. To avoid this phenomenon, we utilize the sufficient training samples of large-scale datasets and propose all features boosting RVM (AFB-RVM), which modifies the way of obtaining weak classifiers. In our experiments we study the differences between various boosting techniques with RVM, demonstrating the performance of the proposed approaches on Spark. As a result of this paper, two proposed approaches on Spark for different types of large-scale datasets are available.

Published
2017
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38. Organocatalytic Domino Michael/cyclization for the synthesis of highly substituted 4, 5-dihydrothiophenes

Author

Li-Si-Han Yu, Chen-Hao Ding, Jian-Wu Xie, and Jian-Lian Dong

Subjects
010405 organic chemistry, Thio, General Chemistry, Optically active, 010402 general chemistry, Oxime, 01 natural sciences, Domino, 0104 chemical sciences, Umpolung, chemistry.chemical_compound, chemistry, Organic chemistry, Amine gas treating
Abstract

Based on an umpolung strategy, a series of novel full substituted, optically active dihydrothiophenes, which contain several functional groups, such as amine, ester and oxime groups, were obtained via an efficient organocatalytic asymmetric a formal thio[3 + 2]-cyclization of acyclic thioamides with ( E )- α -nitrostyrenes.

Published
2018

39. Chemoselective Synthesis of Structurally Diverse 3,4-Dihydroquinazoline-2(1H)-thiones and 4H-Benzo[d][1,3]thiazines

Author

Jian-Wu Xie, Pei-Shun Wei, Jian-Lian Dong, and Li-Si-Han Yu

Subjects
010405 organic chemistry, Chemistry, Yield (chemistry), Organic Chemistry, Substrate (chemistry), Reactivity (chemistry), 010402 general chemistry, 01 natural sciences, Combinatorial chemistry, 0104 chemical sciences, D-1
Abstract

An efficient, mild, and substrate/catalyst-controlled chemoselective reaction of o-isothiocyanato-(E)-cinnamaldehyde with amines has been established, producing three types of six-membered heterocycles: 2-(4H-benzo[d][1,3]thiazin-4-yl)acetaldehydes, 2-(2-thioxo-1,2,3,4-tetrahydroquinazolin-4-yl)acetaldehydes, and (E)-4-(2-methoxyvinyl)-4H-benzo[d][1,3]thiazines. The reaction scopes were quite broad and excellent yield was achieved. This method is extremely efficient and practical and can be conducted on a gram-scale with slightly inferior reactivity under catalyst-free conditions at low cost, making it an ideal alternative to existing methods.

Published
2018

40. Construction of Functionalized (Dihydro)thieno[2,3-c]chromene Derivatives via a Domino Michael Addition/Intramolecular Cyclization Reaction

Author

Jing Wang, Zhi-Jian Gao, Jian-Lian Dong, Jian-Wu Xie, and Li-Si-Han Yu

Subjects
010404 medicinal & biomolecular chemistry, 010405 organic chemistry, Chemistry, Organic Chemistry, Michael reaction, Intramolecular cyclization, Lewis acids and bases, 01 natural sciences, Medicinal chemistry, Catalysis, Domino, 0104 chemical sciences
Abstract

A one-pot synthesis of substituted (dihydro)thieno[2,3-c]chromene derivatives was developed through a Lewis base catalyzed domino Michael addition/intramolecular cyclization reaction between 3-nitro-2H-chromenes and thioamides. The desired (dihydro)thieno[2,3-c]chromene derivatives were prepared with a large substrate scope (22 examples) and excellent diastereoselectivity in moderate to excellent yields.

Published
2018

45. A dual-channel “on–off–on” fluorescent probe for the detection and discrimination of Fe3+and Hg2+in piggery feed and swine wastewaterElectronic supplementary information (ESI) available. See https://doi.org/10.1039/d2ay00629d

Author

Fan, Qing, Bao, Guang-Ming, Li, Si-Han, Liu, Si-Yi, Cai, Xin-Ru, Xia, Yi-Fan, Li, Wei, Wang, Xiao-Ying, Deng, Ke, and Yuan, Hou-Qun

Abstract

Blue-fluorescent blood-CDs were synthesized through a one-pot hydrothermal method using a mixture of chicken blood and trisodium citrate and then explored as a fluorescent probe for detecting Fe3+and Hg2+. The probe showed excellent selectivity and sensitivity towards Fe3+and Hg2+with a dramatic “on–off” fluorescence response. F−recovered the fluorescence quenching by Fe3+, and Al3+recovered the fluorescence quenching by Hg2+, showing an “off–on” fluorescence response. The blood-CDs were used as an “on–off–on” dual-channel fluorescent sensor for the detection and discrimination of Fe3+and Hg2+ions. The probe showed wide linear ranges for determination of Fe3+(0–100 μM) and Hg2+(0–120 μM) with low detection limits of 0.23 μM for Fe3+and 0.17 μM for Hg2+. This probe was practically applied for the determination of Fe3+and Hg2+in piggery feed and wastewater with good recoveries. This work provides a fluorescent probe for the quantification of Fe3+and Hg2+in livestock feed and environmental water samples.

Published
2022
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