Spatio-Temporal Consistency Enhancement for Disparity Sequence

Haixu Liu,Chenyu Liu,Yufang Tang,Haohui Sun,Xueming Li 보안공학연구지원센터 2014 International Journal of Signal Processing, Image Vol.7 No.5

Disparity estimation for still images has attracted much interest and acquired many promising results. However, simply applying these methods to produce a disparity sequence may suffer from the undesirable flickering artifacts. These errors not only distinctly decrease the visible quality of the synthesized video, but also significantly reduce the coding efficiency of the disparity sequence. In this paper, a novel temporal consistency enhancement algorithm based on Guided Filter and Temporal Gradient (GFTG) is proposed. The flickering artifacts and noises are effectively removed and the edges of objects are well preserved. Both quantitative and qualitative evaluations show that the spatio-temporal consistency has been highly improved by utilizing our approach.

The Influence of Collision Energy on the Reaction H+HS→H₂+S

Liu, Yanlei,Zhai, Hongsheng,Zhu, Zunlue,Liu, Yufang Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.11

Quasi-classical trajectory calculations have been carried out for the reaction H+HS by using the newest triplet 3A" potential energy surface (PES). The effects of the collision energy and reagent initial rotational excitation are studied. The cross sections and thermal rate constants for the title reaction are calculated. The results indicate that the integral cross sections (ICSs) are sensitive to the collision energy and almost independent to the initial rotational states. The ro-vibrational distributions for the product $H_2$ at different collision energies are presented. The investigations on the vector correlations are also performed. It is found that the collision energies play a postive role on the forward scatter of the product molecules. There is a negative influence on both the alignment and orientation of the product angular momentum for low collision energy at low energy region. Whereas the influence of collision energy is not obvious at high energy region.

The Influence of Collision Energy on the Reaction H+HS→H2+S

Yanlei Liu,Hongsheng Zhai,Zunlue Zhu,Yufang Liu 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.11

Quasi-classical trajectory calculations have been carried out for the reaction H+HS by using the newest triplet 3A" potential energy surface (PES). The effects of the collision energy and reagent initial rotational excitation are studied. The cross sections and thermal rate constants for the title reaction are calculated. The results indicate that the integral cross sections (ICSs) are sensitive to the collision energy and almost independent to the initial rotational states. The ro-vibrational distributions for the product H2 at different collision energies are presented. The investigations on the vector correlations are also performed. It is found that the collision energies play a postive role on the forward scatter of the product molecules. There is a negative influence on both the alignment and orientation of the product angular momentum for low collision energy at low energy region. Whereas the influence of collision energy is not obvious at high energy region.

A theoretical investigation on ESIPT process of a red-emitting ratiometric fluorescent probe and its fluorescent detection mechanism for cyanide anion

Xueli Jia,Yufang Liu 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.99 No.-

Excited state intramolecular proton transfer (ESIPT) process of afluorescent probe (EP1) and itsfluorescent detection mechanism for cyanide anion (CN ) have been investigated theoretically. Optimized structures indicate that the hydrogen bond (O1 H2 O3) in EP1 is strengthened upon photo-excitation and the O1 H2 proton in EP1-CN formed after adding CN transfers spontaneously to O3. Potential energy curves confirm that proton transfer in EP1 is impossible because energies of the S0 and S1states increase with the O1 H2 bond length. While proton transfer in EP1-CN is unobstructed becauseenergies of the S0 state decrease with the O1 H2 bond length. Compared to EP1, the absorption andfluorescence spectra of EP1-CN are both red-shifted (87 and 41 nm) due to the large charge transferextent. Orbital-weighted dual descriptor isosurface and condensed local nucleophilicity indices confirmthat the carbon atom on the aldehyde group is the nucleophilic site of CN . Transition state searchingdemonstrates that the occurrence of nucleophilic addition reaction between EP1 and CN shouldovercome a reaction barrier of 14.29 kcal/mol and then get EP1-CN, which has 6.61 kcal/mol lower energythan reactants. Thus, EP1 detecting CN is through thefluorescence variation induced by the large chargetransfer extent rather than by hampering ESIPT.

Novel extraction technologies and potential applications of egg yolk proteins

Luping Gu,Yufang Liu,Wanqiu Zhang,Junhua Li,Cuihua Chang,Yujie Su,Yanjun Yang 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.2

The high nutritional value and diverse functional properties of egg yolk proteins have led to its widespread use in the fields of food, medicine, and cosmetics. Various extraction methods have been reported to obtain the proteins from egg yolk, however, their utilization is limited due to the relatively low extraction efficiency and/or toxic solvents involved. Several simpler and greener technologies, especially physical fields (ultrasound), have been successfully developed to improve the extraction efficiency. The egg yolk proteins may exert multiple biological activities, enabling them to be a promising tool in improve human health and wellbeing, such as anti-obesity, anti-atherosclerosis, anti-osteoporosis, diagnosis and therapy for SARS-CoV-2 infections. This article summarizes the novel extraction technologies and latest applications of the egg yolk proteins in the recent 5 years, which should stimulate their utilization as health-promoting functional ingredients in foods and other commercial products.

Coriolis Coupling Influence on the H+LiH Reaction

Hongsheng Zhai,Wenliang Li,Yufang Liu 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.1

We have reported the reaction probability, integral reaction cross section, and rate constant for the title system calculated with the aid of a time-dependent wave packet approach. The ab initio potential energy surface (PES) of Prudente et al. (Chem. Phys. Lett. 2009, 474, 18) is employed for the purpose. The calculations are carried out over the collision energy range of 0.05-1.4 eV for the two reaction channels of H + LiH → Li + H₂and H b + LiH a → H b + LH a. The Coriolis coupling (CC) effect are taken into account. The importance of including the Coriolis coupling quantum scattering calculations are revealed by the comparison between the Coriolis coupling and the centrifugal sudden (CS) approximation calculations.

Coriolis Coupling Influence on the H+LiH Reaction

Zhai, Hongsheng,Li, Wenliang,Liu, Yufang Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.1

We have reported the reaction probability, integral reaction cross section, and rate constant for the title system calculated with the aid of a time-dependent wave packet approach. The ab initio potential energy surface (PES) of Prudente et al. (Chem. Phys. Lett. 2009, 474, 18) is employed for the purpose. The calculations are carried out over the collision energy range of 0.05-1.4 eV for the two reaction channels of H + LiH ${\rightarrow}$ Li + $H_2$ and $H_b$ + $LiH_a$ ${\rightarrow}$ $LiH_b$ + $H_a$. The Coriolis coupling (CC) effect are taken into account. The importance of including the Coriolis coupling quantum scattering calculations are revealed by the comparison between the Coriolis coupling and the centrifugal sudden (CS) approximation calculations.

Comparative analysis of the Down syndrome hippocampal non-coding RNA transcriptomes using a mouse model

Zhaowei Cai,Zhilan Xiao,Yufang Wang,Huazhen Liu,Kangdi Zhang,Xiaoning Zhen,Xiaoling Jiang 한국유전학회 2020 Genes & Genomics Vol.42 No.11

Background Down syndrome (DS), caused by trisomy 21, is the most common human chromosomal disorder. Hippocampalabnormalities have been believed to be responsible for the DS developmental cognitive deficits. Cumulative evidences indicatedthat non-coding RNAs (ncRNAs) participated in brain development and function. Currently, few was known whetherdysregulated ncRNAs existed in DS whether the dysregulated ncRNAs played important pathology roles in DS. Objective The purpose of this study was generating an overview map of the dysregulated ncRNAs in DS, including themicroRNA (miRNA), long ncRNA (lncRNA) and circular RNA (circRNAs). DS mouse models are invaluable tools forfurther mechanism and therapy studies. Methods The well-studied DS mouse model Dp(16)1/Yey was used in this study as it contains the trisomy of the whole humanchromosome 21 syntenic region on mouse chromosomes 16. Hippocampi were isolated from pups of seven-days-old. Librariesfor miRNA, lncRNA and circRNAs were constructed separately, and the next generation sequencing method was utilized. Results Differentially expressed (DE) miRNAs, lncRNAs and circRNAs were reported. Relative few regulating relationshipwere found between the DE miRNAs and DE mRNAs. LncRNAs originated from the trisomic regions expressed in clusters,but not all of them were 1.5-fold increased expressed. Dramatic DE circular RNAs were found in the DS hippocampus. The host genes of the DE circRNAs were enriched on functions which were well-known impaired in DS, e.g. long-termpotentiation,glutamatergic synapse, and GABAergic synapse. Conclusions We generated the first DS developmental hippocampal ncRNA transcriptome map. This work laid foundationsfor further investigations on role of ncRNAs in hippocampal functions.

Limited Clinical Utility of Lipid-Laden Macrophage Index of Induced Sputum in Predicting Gastroesophageal Reflux-Related Cough

Dong Junguo,Huang Junfeng,Liu Jiaxing,Tang Yufang,Sivapalan Dhinesan,Lai Kefang,Zhong Nanshan,Luo Wei,Chen Ruchong 대한천식알레르기학회 2021 Allergy, Asthma & Immunology Research Vol.13 No.5

Gastroesophageal reflux disease (GERD) is a common cause of chronic cough (CC). However, the diagnosis of GERD associated with CC based on 24-hour esophageal pH-monitoring or favorable response to empirical anti-reflux trials is invasive and time-consuming. Lipid-laden macrophages (LLMs) are supposed to be a biomarker for micro-aspiration of gastric content in the respiratory tract. This study was conducted to collect LLMs by the sputum induction technique and observe the relationship among the amount of LLMs, cough severity, parameters of 24-hour esophageal pH-monitoring and therapeutic response. The 24-hour esophageal pH-monitoring and sputum induction were performed on 57 patients with suspected GERD associated with CC. Thirty-four patients were followed up after empirical anti-reflux trials of 8 weeks to record the therapeutic response. Lipid-laden macrophage index (LLMI), a semiquantitative counting of LLMs, showed no significant correlation with the values of 24-hour esophageal pH monitoring at the proximal or remote electrode. No difference in LLMI or DeMeester score, as well as cough symptom association probability, were found between the responders and the non-responders. Reflux symptoms were more common in the responders (50%) compared to the non-responders (6%) (P < 0.05). Our study suggests that LLMI shows limited utility in clinically diagnosing GERD associated with CC as an underlying etiology or in predicting response to anti-reflux therapy. Anti-reflux therapy is more effective for CC patients with reflux symptoms than for those without.

Coherent Control of Autler-Townes Splitting in Photoelectron Spectroscopy: The Effect of Laser Intensity and Laser Envelope

Qin, Chaochao,Zhai, Hongsheng,Zhang, Xianzhou,Liu, Yufang Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.11

We theoretically investigated the coherent control of Autler-Townes splitting in photoelectron spectroscopy of K2 molecule within an ultrafast laser pulse by solving the time-dependent Schrodinger equation using a quantum wave packet method. It was theoretically shown that we can manipulate the splitting of photoelectron spectroscopy by altering the laser intensity. Furthermore, it was found that the percentages of each peak in photoelectron spectroscopy can be controlled by changing the envelope of the laser pulse.