Knowledge Acquisition Approach Based on Rough Set in Online Aided Decision System for Food Processing Quality and Safety

Liu Peng,Liu Wen,Li Qiang,Yang Li,Duan Min,Dai Yue 보안공학연구지원센터 2014 International Journal of u- and e- Service, Scienc Vol.7 No.6

For the problem that the use effect of food processing information system is poor due to absence of knowledge acquisition measures and knowledge self-updating function, a knowledge acquisition approach based on rough set is put forward. First, the approach establishes a set of predicted samples for the relationship between food processing parameters and product quality; then uses the discretization of continuous attribute, attribute reduction and rule extraction algorithm of rough set to acquire automatically predicted knowledge from a large number of predicted sample sets, and then saves the predicted knowledge in the knowledge base of expert system; finally, realizes the extraction of knowledge of food processing process based on the inference engine, which greatly enhances the effectiveness and practicality of the acquired knowledge in online aided decision system of the food processing quality and safety.

Blind Separation of Permuted Alias Image with Motion Blurred Using Image Enhancement in NSCT Domain

DUAN Xin-tao,WANG Jing-juan,PENG Tao,LI Fei-fei,LIU Shang-Wang,LIU Tuan-ning 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.3

Focused on the issue that motion blurred permuted alias image blind separation, an algorithm using image enhancement based on nonsubsampled contourlet transform (NSCT) domain was proposed. Firstly, permuted alias image was decomposed into low-frequency sub-band and high-frequency sub-bands, which were obtained by spare decomposition based on NSCT domain. Coefficients of high-frequency sub-bands were enhanced according to Bayesian shrinkage threshold and nonlinear gain function, and the enhanced version was got by this method. Then the permuted alias image and the enhanced version were blocked, the correlation coefficients were estimated by each corresponding sub-block, because the permuting image was changed larger, the permuting image could be separated by using threshold method. Experimental results show that the proposed algorithm can separate the permuting image effectively from the permuted alias image in spite of the motion blurred direction, blur degree, size, location and the number of permuting image.

Ultra-sensitive graphene based mid-infrared plasmonic bio-chemical sensing using dielectric beads as a medium

Liu, Xiao,Zhang, Duan,Wu, Ye-Cun,Yang, Mei,Wang, Qian,Coileá,in, Cormac Ó,.,Xu, Hongjun,Yang, Chen,Abid, Mohamed,Abid, Mourad,Liu, Huajun,Chun, Byong Sun,Shi, Qingfan,Wu, Han-Chun Elsevier 2017 Carbon Vol.122 No.-

<P>Graphene is moving beyond the realm of simple electronic devices toward areas such as advanced biochemical sensing. The infrared (IR) response of graphene, characterized by collective long-lived charge-carrier oscillations, could be applied in IR-absorption spectroscopy, typically used for bio-chemical analysis. However, direct light absorption by propagating plasmons in graphene is forbidden due to the large momentum mismatch. Proposed methods to overcome this bottleneck come at a cost, the use of noble metal particles on graphene reduces the spectral bandwidth and nano-structuring graphene is expensive. Here, we propose a simple and cheap method to fabricate large scale ultra-sensitive graphene based mid-IR biosensors, by introducing dielectric beads to excite mid-IR range plasmons. Interference from waves scattered by the beads excite surface plasmon polaritons, which propagate several micrometers in graphene and enhance the interaction between the molecules and mid-IR light. This method opens an interesting window for the application of graphene in bio-chemical sensing. (C) 2017 Elsevier Ltd. All rights reserved.</P>

XRCC1 Arg399Gln Gene Polymorphism and Hepatocellular Carcinoma Risk in the Chinese Han Population: A Meta-analysis

Duan, Wei-Hong,Zhu, Zhen-Yu,Liu, Jun-Gui,Dong, Mao-Sheng,Chen, Jun-Zhou,Liu, Quan-Dda,Xie, Yu,Sun, Ti-Ye,Gao, Ze-Feng,Zhou, Ning-Xin Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8

Purpose: Numerous studies have evaluated the association between XRCC1 Arg399Gln gene polymorphism and hepatocellular carcinoma risk in the Chinese Han population. However, the results have been inconsistent. We therefore here examined whether the XRCC1 Arg399Gln gene polymorphism confers hepatocellular carcinoma risk by conducting a meta-analysis. Methods: PubMed, Google scholar and China National Knowledge Infrastructure databases were searched for eligible articles in English and Chinese that were published before April 2012. Results: 6 studies involving 1,246 patients with hepatocellular carcinoma and 1,953 controls were included. The association between XRCC1 Arg399Gln gene polymorphism and hepatocellular carcinoma in the Chinese Han population was significant under GG vs AA (OR = 1.48, 95% CI = 1.13 to 1.94). Limiting the analysis to the studies with controls in the Hardy-Weinberg equilibrium, the results were persistent and robust. Conclusions: In the Chinese Han population, the XRCC1 Arg399Gln gene polymorphism is associated with an increased hepatocellular carcinoma risk.

Studies on the Soybean Cyst Nematode (Heterodera glycines) in China

Liu, Wei-Zhi,Liu, Ye,Duan, Yu-Xi,Hong, Quan-Chun,Wang, Ke-Ning Korean Society of Applied Entomology 1995 한국응용곤충학회지 Vol.34 No.2

Soybean has been cultivated in China for 5,000 years. The soybean cyst neamtode (SCN), Heterodra glycines, was recongnized in Northeastern China in 1899. Currently, it is known to occur in 12 provinces. The biology of SCN was investigated in several provinces. Six races of SCN were identified (race 1, 2, 3, 4, 5 and 7). About f10,000 soybean germplasm lines were evaluated for their resistance to race 1, 3, 4 and 5 of SCN. At least two black-seeded cultivars are resistant to all four races. Several tolerant soybean cultivars with yellow seed coat were released and are in production. Additional resistant cultivars are being developed. Nematicides were not applied in production Potential biocontrol agents and related aspects are being investigated.

Rho-GTPase Effector ROCK Phosphorylates Cofilin in Actin-Meditated Cytokinesis During Mouse Oocyte Meiosis

Duan, Xing,Jun-Liu,Dai, Xiao-Xin,Liu, Hong-Lin,Cui, Xiang-Shun,Kim, Nam-Hyung,Wang, Zhen-Bo,Qiang-Wang,Sun, Shao-Chen Society for the Study of Reproduction [etc.] 2014 BIOLOGY OF REPRODUCTION Vol.90 No.2

During oocyte meiosis, a spindle forms in the central cytoplasm and migrates to the cortex. Subsequently, the oocyte extrudes a small body and forms a highly polarized egg; this process is regulated primarily by actin. ROCK is a Rho-GTPase effector that is involved in various cellular functions, such as stress fiber formation, cell migration, tumor cell invasion, and cell motility. In this study, we investigated possible roles for ROCK in mouse oocyte meiosis. ROCK was localized around spindles after germinal vesicle breakdown and was colocalized with cytoplasmic actin and mitochondria. Disrupting ROCK activity by RNAi or an inhibitor resulted in cell cycle progression and polar body extrusion failure. Time-lapse microscopy showed that this may have been due to spindle migration and cytokinesis defects, as chromosomes segregated but failed to extrude a polar body and then realigned. Actin expression at oocyte membranes and in cytoplasm was significantly decreased after these treatments. Actin caps were also disrupted, which was confirmed by a failure to form cortical granule-free domains. The mitochondrial distribution was also disrupted, which indicated that mitochondria were involved in the ROCK-mediated actin assembly. In addition, the phosphorylation levels of Cofilin, a downstream molecule of ROCK, decreased after disrupting ROCK activity. Thus, our results indicated that a ROCK-Cofilinactin pathway regulated meiotic spindle migration and cytokinesis during mouse oocyte maturation.

Comparative transcriptomic and physiological analyses of contrasting hybrid cultivars ND476 and ZX978 identify important differentially expressed genes and pathways regulating drought stress tolerance in maize

Guo Liu,Tinashe Zenda,Songtao Liu,Xuan Wang,Hongyu Jin,Anyi Dong,Yatong Yang,Huijun Duan 한국유전학회 2020 Genes & Genomics Vol.42 No.8

Background Drought is the major abiotic stress factor that negatively influences growth and yield in cereal grain crops such as maize (Zea mays L.). A multitude of genes and pathways tightly modulate plant growth, development and responses to environmental stresses including drought. Therefore, crop breeding efforts for enhanced drought resistance require improved knowledge of plant drought responses. Objective Here, we sought to elucidate the molecular and physiological mechanisms underpinning maize drought stress tolerance. Methods We therefore applied a 12-day water-deficit stress treatment to maize plants of two contrasting (drought tolerant ND476 and drought sensitive ZX978) hybrid cultivars at the late vegetative (V12) growth stage and performed a large-scale RNA sequencing (RNA-seq) transcriptome analysis of the leaf tissues. Results A comparative analysis of the two genotypes leaf transcriptomes and physiological parameters revealed the key differentially expressed genes (DEGs) and metabolic pathways that respond to drought in a genotype-specific manner. A total of 3114 DEGs were identified, with 21 DEGs being specifically expressed in tolerant genotype ND476 in response to drought stress. Of these, genes involved in secondary metabolites biosynthesis, transcription factor regulation, detoxification and stress defense were highly expressed in ND476. Physiological analysis results substantiated our RNA-seq data, with ND476 exhibiting better cell water retention, higher soluble protein content and guaiacol peroxidase activity, along with low lipid peroxidation extent than the sensitive cultivar ZX978 under drought conditions. Conclusion Our findings enrich the maize genetic resources and enhance our further understanding of the molecular mechanisms regulating drought stress tolerance in maize. Additionally, the DEGs screened in this study may provide a foundational basis for our future targeted cloning studies.

Formation and failure characteristics of a landslide induced by excavation in western Henan, China

Haining Liu,Suzhen Duan,Han Dong Liu,Weiguo Wang,Yujie Jia 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.7

Engineering construction in mountainous areas is a key factor inducing slope failure, whichposes severe threats to life and property safety during construction and operation. Thus, clearunderstanding of slope structure and potential failure mechanisms is of great importance forslope reinforcement. The Shangge landslide, located in a mountainous area of WesternHenan, China, was triggered by excavation along a toll station. The slope was still unstableafter a row of anti-sliding piles were constructed. To clarify the deformation characteristics andfailure mechanism of this landslide and provide reinforcement guidance for slopes with similargeological conditions, a combined method of field investigation, displacement monitoring,and numerical simulation was employed. The results indicate that the natural slope comprisesa dual structure of soil and rock, and that the soil, with poor permeability and high watermoisture, was prone to form a potential sliding surface. Secondly, slope excavation was thedirect triggering factor. Lastly, but most importantly, the preliminary investigation work failed toaccurately expose the potential position of the sliding surface, and the existing anti-slide pilesfailed to cross the potential sliding surface, which made them unable to effectively improveslope stability. The numerical simulation verified that the recommended piles installed on theplatform of level 2 could significantly improve slope stability. Therefore, when carrying outengineering slope design in similar geological environments, the slope structure and materialcomposition should be fully identified, and the influence of groundwater on the slope stabilitystate should be emphasized. These results can provide a reference for similar slopereinforcement designs.

Research on the Flame Simulation Method Based on the Particle System

Xumin Liu,Zilong Duan,Dawei Qian,Xiaojun Wang 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.12

In reality, flame is a common fluid scene. In this paper, we simulated flame by using improved particle system and detail the properties and changes of particles in the model. We realized a realistic color change and dynamic flickering flame characteristics. We used texture mapping method to render the flame and used the hierarchical programming structure to provide a simple and practical interactive flame simulation. We also designed and implemented demonstration system of flame simulation. Experiments show that using the flame image generated in this paper can not only satisfy the visual effect but also meet the real-time requirements.

Investigations of bubble size distribution on swirl effervescent atomizer flotation

Liansheng Liu,Jun Xie,Xuanchen Liu,Huiru Qu,Fang Zhao,Runze Duan 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-

Atomizer flotation has the advantages of low cost, low energy consumption, adjustable, and long cycle lifein industrial applications. The bubble diameter is an important parameter for floatation. The smaller thebubble diameter, the better the flotation effect. However, the bubble diameter produced by the atomizerduring flotation separation is large at present. In this paper, a swirl effervescent atomizer is designed andexperimental diagnosis through a spray measurement system and submerged spray visualization system. The diameter and size distribution of bubbles in 5 mm from the atomizer outlet to the jet cross-sectionspray were discussed. The results showed that the swirl effervescent atomizer obtained a fine Sautermean diameter (SMD is 13–25 lm) compared with the traditional atomizer. Three flow patterns wereobserved at the submerged spray system: large bubbly flow, discrete bubbly flow, and slug flow. A statisticalmethod of bubbles under high injection pressure was proposed. The effects of the operating conditionsof the effervescent atomizer on the bubble diameter were investigated. The average bubblediameter decreased with the increase in injection pressure and gas–liquid mass flow ratios (GLR). However, with the GLR being increased to 0.15, the influence of injection pressure on bubble diameterwas reduced. The backpressures (Liquid level heights) have less effect on bubbles compared with injectionpressure and GLR. This paper has great significance for the sustainable development of the atomizerin the flotation separation application.