A new species and a new record of the genus Cymatia (Hemiptera, Heteroptera, Corixidae) from China

Xie Tong-Yin,Zhao Kui-Jun 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4

This paper provides the description of a new species, Cymatia shiae sp.nov. from Inner Mongolia Autonomous Region. Cymatia coleoptrata is first recorded from mainland China. An updated key to the known Chinese species of Cymatia is presented.

Enhanced Biofuel Production from High-Concentration Bioethanol Wastewater by a Newly Isolated Heterotrophic Microalga, Chlorella vulgaris LAM-Q

( Tong Hui Xie ),( Jing Liu ),( Kai Feng Du ),( Bin Liang ),( Yong Kui Zhang ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.10

Microalgal biofuel production from wastewater has economic and environmental advantages. This article investigates the lipid production from high chemical oxygen demand (COD) bioethanol wastewater without dilution or additional nutrients, using a newly isolated heterotrophic microalga, Chlorella vulgaris LAM-Q. To enhance lipid accumulation, the combined effects of important operational parameters were studied via response surface methodology. The optimal conditions were found to be temperature of 22.8oC, initial pH of 6.7, and inoculum density of 1.2 × 108 cells/ml. Under these conditions, the lipid productivity reached 195.96 mg/l/d, which was markedly higher than previously reported values in similar systems. According to the fatty acid composition, the obtained lipids were suitable feedstock for biodiesel production. Meanwhile, 61.40% of COD, 51.24% of total nitrogen, and 58.76% of total phosphorus were removed from the bioethanol wastewater during microalgal growth. In addition, 19.17% of the energy contained in the wastewater was transferred to the microalgal biomass in the fermentation process. These findings suggest that C. vulgaris LAMQ can efficiently produce lipids from high-concentration bioethanol wastewater, and simultaneously performs wastewater treatment.

Stock Pledge by Controlling Shareholder and Corporate Social Responsibility

Tong Lijing,Wen Wen,Xie Lu,Zhang Siting 한국증권학회 2023 Asia-Pacific Journal of Financial Studies Vol.52 No.5

We examine the influence of stock pledge by controlling shareholders on corporate social responsibility (CSR). Results show that firms exhibit poorer CSR performance when the controlling shareholders have more shares under pledge to financial institutions. Further analyses suggest that the negative relation between stock pledge and CSR only exists in financially constrained firms and non‐state‐owned firms, in which the pledging controlling shareholders have greater incentive to increase stock price and maintain their control rights. Our findings support a margin call hypothesis that firms tend to cut off CSR spending to improve short‐term financial performance and reduce the risk of losing control rights.

Enhanced carrier separation in g-C3N4/MoO3-x heterostructures towards efficient phenol removal

Tong Song,Cong Xie,Quande Che,Ping Yang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.122 No.-

Two-dimensional (2D)/2D g-C3N4/MoO3-x heterojunctions were constructed for enhanced photocatalyticphenol removal. The oxygen vacancies in MoO3-x help to extend absorption in a full solar spectrum especiallyin near-infrared (NIR) region. Improved charge transfer path preserved photogenerated electronsand holes with powerful enough redox abilities, which simultaneously improved phenol photodegradationperformance and photocatalytic activation efficiency of peroxydisulfate (PDS). In full solar spectrumactivated PDS system, the phenol removal efficiency using g-C3N4/MoO3-x heterostructures reached 98%within 60 min. For the contribution of PDS activation process, active species trapping experiment and insituopen-circuit potentials (OCP) measurement indicated that radical and non-radical pathways jointlypromoted the elimination of phenol. The existence of oxygen vacancies promoted the formation ofcatalyst-PDS* complex and thus facilitated the electron transfer process, which exerted crucial effectas non-radical pathway. This result provided an ideal catalyst for photocatalytic persulfate activation systemin the field of environmental remediation.

Construction Mechanism of Reticular Structure of Plant Fiber

Xie, Yongqun,Tong, Queju,Chen, Yan Korea Furniture Society 2008 한국가구학회지 Vol.19 No.2

This paper investigated and validated the mechanisms and principles for constructing reticular structure of plant fiber through frothing solution approach. After process, plant fibers became low-density reticular-structured block with all properties meeting Chinese standards for cushion packing materials. The bonds between fibers acted as knots in a truss and were strong enough to keep space occupied by bubbles in the frothing solution from shrinking in the subsequent draining process. The formation of the reticular structure depends mainly on the pressure difference between inside and outside bubble, the effect of surface adsorbent force on bubble film, and hydrogen bond among fiber hydroxide.

Finger Vein Representation by Modified Binary Tree Model

Tong Liu,Jianbin Xie,Huanzhang Lu,Wei Yan,Peiqin Li 한국산학기술학회 2013 SmartCR Vol.3 No.2

Finger vein recognition has high identification accuracy and strong security performance, which can be used in banks, offices, factories, etc. Although image representation is not a necessary process for finger vein recognition, a proper representation method can help to explore distribution regularities and structure differences of finger veins, and provides instructive information for finger vein recognition. It is very difficult to represent finger veins because of their irregular structure. Therefore, four principles (caliber uniformity, node replication, loop splitting, and virtual connection) are proposed in this paper, first to simplify the finger vein structure as a binary tree structure. Then a modified binary tree model is proposed based on the binary tree structure. The new model uses the binary tree to describe the relationships between different vein branches and uses a B-spline function to describe the spatial structure of vein branches. Experiments show that this model can quantitatively describe the relationships between, and the spatial structure of, vein branches with little representation error and low storage space requirements.

Driver`s Face Detection Using Space-time Restrained Adaboost Method

( Tong Liu ),( Jianbin Xie ),( Wei Yan ),( Peiqin Li ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.9

Face detection is the first step of vision-based driver fatigue detection method. Traditional face detection methods have problems of high false-detection rates and long detection times. A space-time restrained Adaboost method is presented in this paper that resolves these problems. Firstly, the possible position of a driver`s face in a video frame is measured relative to the previous frame. Secondly, a space-time restriction strategy is designed to restrain the detection window and scale of the Adaboost method to reduce time consumption and false-detection of face detection. Finally, a face knowledge restriction strategy is designed to confirm that the faces detected by this Adaboost method. Experiments compare the methods and confirm that a driver`s face can be detected rapidly and precisely.

Proposals for flexural capacity prediction method of externally prestressed concrete beam

Wu-Tong Yan,Liang-Jiang Chen,Bing Han,Feng Wei,Hui-Bing Xie,Jia-Ping Yu 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.83 No.3

Flexural capacity prediction is a challenging problem for externally prestressed concrete beams (EPCBs) due to the unbonded phenomenon between the concrete beam and external tendons. Many prediction equations have been provided in previous research but typically ignored the differences in deformation mode between internal and external unbonded tendons. The availability of these equations for EPCBs is controversial due to the inconsistent deformation modes and ignored secondorder effects. In this study, the deformation characteristics and collapse mechanism of EPCB are carefully considered, and the ultimate deflected shape curves are derived based on the simplified curvature distribution. With the compatible relation between external tendons and the concrete beam, the equations of tendon elongation and eccentricity loss at ultimate states are derived, and the geometric interpretation is clearly presented. Combined with the sectional equilibrium equations, a rational and simplified flexural capacity prediction method for EPCBs is proposed. The key parameter, plastic hinge length, is emphatically discussed and determined by the sensitivity analysis of 324 FE analysis results. With 94 collected laboratory-tested results, the effectiveness of the proposed method is confirmed, and comparisons with the previous formulas are made. The results show the better prediction accuracy of the proposed method for both stress increments and flexural capacity of EPCBs and the main reasons are discussed.

A Novel Routing Mechanism for Large Scale Wireless Sensor Network with Multiple Sinks

Fei Tong,Rong Xie,Bingbing Li,Mohamed A. Ahmed,Young-Chon Kim 한국통신학회 2011 한국통신학회 학술대회논문집 Vol.2011 No.2

The Epitope Recognized by Monoclonal Antibody 2B6 in the B/C Domains of Classical Swine Fever Virus Glycoprotein E2 Affects Viral Binding to Hyperimmune Sera and Replication

( Chao Tong ),( Ning Chen ),( Xun Liao ),( Wen Qi Xie ),( De Jiang Li ),( Xiao Liang Li ),( Wei Huan Fang ) 한국미생물 · 생명공학회 2015 Journal of microbiology and biotechnology Vol.25 No.4

Classical swine fever (CSF) is a highly contagious disease of pigs caused by CSF virus (CSFV). E2 is the major viral envelope protein of immune dominance that induces neutralizing antibodies and confers protection against CSFV infection. The B/C domains of E2 are variable among CSFV isolates, which could affect immunogenicity and binding to antibodies. We attempted to characterize the epitope recognized by a monoclonal antibody 2B6 (mAb-2B6) raised against the E2 B/C domains of the vaccine C-strain and to examine if mutations in the epitope region would affect antibody binding and viral neutralization. The epitope specific for mAb-2B6 recognition is linear, spanning five residues 774DGXNP778 in the B/C domains. The residue N777 is indispensable for the specificity. The epitope exists only in group 1 strains, but not in those of group 2. The recombinant viruses containing individual mutations on the epitope region lost the reactivity to mAb-2B6. The mutant virus RecC-N777S had low replication potential, about 10-fold decrease in the yield of progeny virus particles, whereas the mutant virus RecC-P778A reverted to proline upon continuous passaging. The mutations on the mAb-2B6 epitope region did not affect neutralization by anti-C-strain polyclonal sera from pigs. Deletion from aa774 covering the mAb-2B6 epitope, but not that from aa781, also affected binding with the polyclonal antibodies from vaccinated pigs, although the major binding region for the vaccinated antibodies is aa690-773.