Antioxidant capacity, flavor and physicochemical properties of FH06 functional beverage fermented by lactic acid bacteria: a promising method to improve antioxidant activity and flavor of plant functional beverage

Yan Xian-Tao,Zhang Ziqi,Wang Yubao,Zhang Wenmiao,Zhang Longfei,Liu Yang,Chen Dawei,Wang Wenqiong,Ma Wenlong,Qian Jian-Ya,Gu Ruixia 한국응용생명화학회 2023 Applied Biological Chemistry (Appl Biol Chem) Vol.66 No.-

The ability of natural plants to treat chronic diseases is closely related to their antioxidant function. Lactic acid bacteria (LAB) fermentation is an effective way to improve the nutritional value, biological activity and flavor of food. This study investigated the pH, titratable acidity, total polysaccharide, total flavone, total saponin, total polyphenol, and antioxidant activity of the FH06 beverage before and after probiotic fermentation. Results: After fermentation, FH06 had lower contents of total polysaccharides, total flavonoids, total saponins and total polyphenols but higher titratable acidity. The antioxidant activity was tested by total antioxidant capacity (FRAP method) and DPPH· scavenging ability. The FRAP value significantly increased after fermentation (P < 0.05), and the maximum increase was observed for Lactobacillus fermentum grx08 at 25.87%. For DPPH· scavenging ability, the value of all fermentations decreased, and L. fermentum grx08 had the smallest reduction at 2.21% (P < 0.05). The results of GC–MS and sensory analysis showed that fermentation eliminated bad flavors, such as grass, cassia and bitterness, and highlighted the fruit aroma and soft sour taste. Conclusion: The FRAP value and sensory flavor of FH06 fermentation by L. fermentum grx08 were significantly improved, indicating its great potential as a functional food with both strong antioxidant activity and good flavor.

Research on the Surface Characteristics of Hardened Steel with Variable Chamfer Edge PCBN Insert by High-Speed Hard Turning

Xian-li Liu,Su-Yan Li,Tao Chen,Dao-Yuan Wang 한국정밀공학회 2018 International Journal of Precision Engineering and Vol.19 No.2

In this paper, high-speed cutting tests for hardened steel were carried out where PCBN inserts with variable chamfer and fixed chamfer were employed. The aim of the tests was to investigate the influence of cutting speed and tool wear of variable chamfer insert on the machined surface topography, micro-characteristics and micro-hardness, where comparison and analysis of the machined surface properties were also carried out for the surface produced by the fixed chamfer tool. Experimental results showed that machined surface morphologies become more complex and rough, and peaks appear to a trend towards steepness, with the flank wear increase of the variable chamfer tool. At the same time, the thickness of white layer, hardening depth and hardening degree of the machined surface increase dramatically. With the increase in cutting speed of the variable chamfer tool, it is of primary importance to consider phase transition effects caused by thermal load, which will result in increase in the thickness of white layer on the machined surface. Moreover, it will also lead to decrease in the thickness and deformation degree of plastically deformed layer caused by mechanical load. Compared to the fixed chamfer tool, the cutting force generated by the variable chamfer tool is relatively small, where the flank wear area is also smaller and the groove wear marks is shallower. Therefore, better surface roughness can be obtained by utilizing the variable chamfer tool. In particular, the gap between the roughness of the machined surface formed by two tools becomes more pronounced in the scenarios of high speed and severe wear. Moreover, the thickness of white layer, the depth and degree of hardened layer are relatively small for the variable chamfer tool. Therefore, the surface properties produced by the variable chamfer tool would be more desirable.

Study on the Hydrothermal Synthesis and Optical Properties of YVO4:Dy3+ Phosphor Powders

Hong-Tao Liu,Yan Liang,Xiao-Yong Gao,Sa Zhang,Xian-Wei Zhao,Xian-Mei Chen 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.8

YVO4:Dy3+ phosphor powders were synthesized by using the hydrothermal method under differentpH conditions. The crystallization, surface morphology, lattice vibration, optical properties,luminescent mechanism and influencing factors of the obtained YVO4:Dy3+ phosphor powders werecarefully studied and analyzed in detail. All of the YVO4:Dy3+ phosphor powders had tetragonalstructures, and the pH value had a significant impact on the surface morphology, structure andoptical properties of the synthesized samples. Strong acidic and alkali environments were favorablefor the crystallization of YVO4:Dy3+phosphor powders, and the YVO4:Dy3+ phosphor powderssynthesized under strong alkali environments had the best luminescent properties.

Image Decomposition With Multilabel Context: Algorithms and Applications

Teng Li,Shuicheng Yan,Tao Mei,Xian-Sheng Hua,In-So Kweon IEEE 2011 IEEE TRANSACTIONS ON IMAGE PROCESSING - Vol.20 No.8

<P>Most research on image decomposition, e.g., image segmentation and image parsing, has predominantly focused on the low-level visual clues within a single image and neglected the contextual information across images. In this paper, we present a new perspective to image decomposition piloted by the multilabel context associated with each individual image. Observing that the contextual information (i.e., local label representations of the same label are similar while those from different labels are dissimilar) exists across images, we propose to perform image decomposition in a collective way and obtain an optimal representation for each label from a set of multilabeled images. We formulate the problem as an optimization problem which maximizes inter-label difference while minimizing the intra-label difference of the target label representations and propose two ways to solve this problem. Such a contextual image decomposition has a wide variety of applications, among which two exemplary ones-multilabel image annotation and label ranking, are presented and evaluated with different classification techniques. Extensive experiments on two benchmark datasets demonstrate promising results.</P>

The Stent-Assisted Coil-Jailing Technique Facilitates Efficient Embolization of Tiny Cerebral Aneurysms

Cong-Hui Li,Xian-Hui Su,Bo Zhang,Yong-Feng Han,Er-Wei Zhang,Lei Yang,Dong-Liang Zhang,Song-Tao Yang,Zhen-Quan Yan,Bu-Lang Gao 대한영상의학회 2014 Korean Journal of Radiology Vol.15 No.6

Objective: Tiny cerebral aneurysms are difficult to embolize because the aneurysm’s sac is too small for a single small coil, and coils within the aneurysm may escape from the confinement of a stent. This study was performed to introduce the stent-assisted coil-jailing technique and to investigate its effect on the coil embolization of tiny intracranial aneurysms. Materials and Methods: Sixteen patients with tiny intracranial aneurysms treated with the stent-assisted coil-jailing technique between January 2011 and December 2013 were retrospectively reviewed and followed-up. Results: All aneurysms were successfully treated with the coil-jailing technique, and at the end of embolization, complete occlusion of the aneurysm was achieved in 9 cases (56.3%), incomplete occlusion in 6 (37.5%), and partial occlusion in 1 (6.3%). Intraprocedural complications included acute thrombosis in one case (6.3%) and re-rupture in another (6.3%). Both complications were managed appropriately with no sequela. Follow-up was performed in all patients for 3–24 months (mean, 7.7 months) after embolization. Complete occlusion was sustained in the 9 aneurysms with initial complete occlusion, progressive thrombosis to complete occlusion occurred in the 6 aneurysms with initial near-complete occlusion, and one aneurysm resulted in progressive thrombosis to complete occlusion after initial partial occlusion. No migration of stents or coils occurred at follow-up as compared with their positions immediately after embolization. At follow-up, all patients had recovered with no sequela. Conclusion: The stent-assisted coil-jailing technique can be an efficient approach for tiny intracranial aneurysms, even though no definite conclusion regarding its safety can be drawn from the current data.

Random vibration analysis of train-slab track-bridge coupling system under earthquakes

Zhi-ping Zeng,Xian-feng He,Yan-gang Zhao,Zhi-wu Yu,Ling-kun Chen,Wen-tao Xu,Ping Lou 국제구조공학회 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.54 No.5

This study aimed to investigate the random vibration characteristic of train-slab track-bridge interaction system subjected to both track irregularities and earthquakes by use of pseudo-excitation method (PEM). Each vehicle subsystem was modeled by multibody dynamics. A three-dimensional rail-slabgirder-pier finite element model was created to simulate slab track and bridge subsystem. The equations of motion for the entire system were established based on the constraint condition of no jump between wheel and rail. The random load vectors of equations of motion were formulated by transforming track irregularities and seismic accelerations into a series of deterministic pseudo-excitations according to their respective power spectral density (PSD) functions by means of PEM. The time-dependent PSDs of random vibration responses of the system were obtained by step-by-step integration method, and the corresponding extreme values were estimated based on the first-passage failure criterion. As a case study, an ICE3 high-speed train passing a fifteen-span simply supported girder bridge simultaneously excited by track irregularities and earthquakes is presented. The evaluated extreme values and the PSD characteristic of the random vibration responses of bridge and train are analyzed, and the influences of train speed and track irregularities (without earthquakes) on the random vibration characteristic of bridge and train are discussed.

Association Between XPD Asp312Asn Polymorphism and Esophageal Cancer Susceptibility: A Meta-analysis

Duan, Xiao-Li,Gong, Heng,Zeng, Xian-Tao,Ni, Xiao-Bing,Yan, Yan,Chen, Wen,Liu, Guo-Lei Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.7

Objective: To investigate the association between xeroderma pigmentosum group D (XPD) Asp312Asn polymorphism and esophageal cancer (EC) susceptibility by meta-analysis. Methods: We searched PubMed up to April 9th, 2012, to identify relevant papers, and 8 published case-control studies including 2165 EC patients and 3141 healthy controls were yielded. Odds ratios (ORs) with relevant 95% confidence intervals (CIs) were applied to assess the association between XPD Asp312Asn polymorphism and EC susceptibility with the Comprehensive Meta-Analysis software, version 2.2. Results: Overall, the meta-analysis results suggested the XPD Asp312Asn polymorphism to be significantly associated with EC susceptibility [(Asn/Asn+Asp/Asn) vs. Asp/Asp: OR=1.20, 95%CI=1.05-1.36, p=0.01; and Asp/Asn vs. Asp/Asp: OR=1.15, 95%CI =1.01-1.31, p=0.04]. In the subgroup analysis by ethnicity and cancer type, significantly associations were found for Caucasian populations [(Asn/Asn+Asp/Asn) vs. Asp/Asp: OR=1.26, 95%CI =1.08-1.47, p<0.001; Asp/Asn vs. Asp/Asp: OR=1.19, 95%CI =1.02-1.40, p=0.03] and esophageal squamous cell carcinoma [(Asn/Asn+Asp/Asn) vs. Asp/Asp: OR=1.19, 95%CI=1.01-1.41, p=0.04]. There was no heterogeneity and no publication bias existed. Conclusions: This meta-analysis shows that the XPD Asp312Asn polymorphism may be a risk factor for developing EC, especially for Caucasian populations and esophageal squamous cell carcinoma.

Variants on ESR1 and their Association with Prostate Cancer Risk: A Meta-analysis

Ding, Xiang,Cui, Feng-Mei,Xu, Song-Tao,Pu, Jin-Xian,Huang, Yu-Hua,Zhang, Jiang-Lei,Wei, Xue-Dong,Hou, Jian-Quan,Yan, Chun-Yin Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8

Background: Epidemiological studies evaluating the association of two variants rs9340799 and rs2234693 on estrogen receptor 1 (ESR1) with prostate risk have generated inconsistent results. Methods: A meta-analysis was here conducted to systematically evaluate the relationship of these two variants with prostate cancer susceptibility. Results: For rs9340799, heterozygosity of T/C carriers showed a significant increased prostate cancer risk with a pooled odds ratio (OR) of 1.34 (95% CI = 1.06-1.69) while homozygote C/C carriers showed an increased but not statistically significant association with prostate cancer risk (pooled OR = 1.29, 95% CI = 0.94-1.79). Compared to the homozygous TT carriers, the allele C carriers showed a 31% increased risk for prostate cancer (pooled OR = 1.31, 95% CI = 1.06-1.63). No significant association between the rs2234693 and prostate cancer risk was found with the pooled OR of 1.15 (95% CI = 0.97-1.39, T/C and C/C vs. T/T) under the dominant genetic model. Compared to the homozygote T/T carriers, the heterozygous T/C carriers did not show any significantly different risk of prostate cancer (pooled OR = 1.13, 95% CI = 0.94-1.36) and the homozygous C/C carriers also did not show a significant change for prostate cancer risk compared to the wide-type T/T carriers (pooled OR = 1.26, 95% CI = 0.98-1.62). Conclusion: These data suggested that variant rs9340799, but not rs2234693, on ESR1 confers an elevated risk of prostate cancer.

A Method for Building Naxi Language Dependency Treebank Based on Chinese-Naxi Language Relationship Alignment

Gao Sheng-Xiang,An Ming-Jia,Mao Cun-Li,Xian Yan-Tuan,Yu Zheng-Tao 보안공학연구지원센터 2015 International Journal of Database Theory and Appli Vol.8 No.2

Relative to Chinese, as to Naxi Language, its corpus is very rare, its annotation is also difficult, and these factors make its Syntactic Analysis much too difficult. Aiming to the problem, in the paper, it is proposed a method for building Naxi Language Dependency Treebank based on Chinese-Naxi Language relationship alignment. Firstly, the corresponding words of Chinese-Naxi sentence pairs are aligned; then, the dependency grammar on Chinese sentences; Finally, some characteristics and rules of Naxi Language in itself being considered, the generated Chinese Dependency Tree is mapped to Naxi Sentence by using Chinese-Naxi Languages relationship alignment, as a result, Naxi Dependency Parsing Tree is generated. Experimental results show that: This approach can simplify the process of manual collection and annotation of Naxi Treebank, and save manpower and time to build the dependency treebank of Naxi Language.