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RISS 인기검색어
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- 저자 : Jintao Lin (검색결과 5 건)
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Food search and transport in red imported fire ants (Hymenoptera: Formicidae) under wet conditions
Lin Jintao,Yang Xinya,Lyu Hailong,Chen Xuan,Wang Lei,Wang Cai,Wen Xiujun 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.1
The red imported fire ant, Solenopsis invicta Buren, has invaded various wetlands such as beaches, swamps, and mangrove forests. We hypothesize that S. invicta can effectively forage food in these habitats. Here, the food searching and transport by S. invicta on each substrate (sand or soil with freshwater or artificial seawater) at different saturation levels (70%, 100%, 130%, or 160%) were evaluated. Ants walked on unsubmerged substrates (70%- and 100%-saturated) to search for food, and surprisingly, they swam and passed 130%- or 160%-saturated substrates that were submerged with thin layers of water. Saturation level may significantly affect duration of food search and/or transport, depending on substrate types. The number of foraging ants rapidly increased and decreased on the food-releasing platform located on the 70%-saturated substrate and remained stable on the platform located on the 100%-saturated substrate. However, only a few ants were found on the platform located on waterlogged substrates throughout the experiment. In addition, no food was successfully transported passing the waterlogged substrate. We also compared food search and transport among four substrates (sand or soil with freshwater or seawater) at the 70%- or 100%-saturation level. Ants spent similar time searching for food and transporting food on the platform, but minimal food was transported passing the soil with freshwater or seawater. Our results showed that S. invicta can successfully search for food but fail to transport food on waterlogged substrates. In addition, both substrate types and saturation level affected food transport under unsubmerged conditions.
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Luo Ba,Jintao Du,Feng Liu,Sixi Liu,Fenglin Yang,Miaomiao Han,Ping Lin,Huabin Li 대한천식알레르기학회 2015 Allergy, Asthma & Immunology Research Vol.7 No.4
Purpose: The role of systemic sensitization in the pathophysiology of chronic rhinosinusitis with nasal polyps (CRSwNP) remains elusive. This study sought to characterize the pattern of cytokines in polyp tissues from atopic and nonatopic patients with CRSwNP. Methods: Atopic and nonatopic polyp and normal tissues were collected from 70 CRSwNP patients and 26 control subjects, respectively. The distribution of inflammatory cells (eosinophils, neutrophils, mast cells, etc.) were examined using immunohistochemistry, the mRNA levels of the transcription factors GATA-3, T-bet, RORc, and FOXP3 were determined using quantitative real-time polymerase chain reaction. The levels of inflammatory mediators (IFN-γ, IL-5, IL- 17A, etc.) in tissue homogenates were measured using enzyme-linked immunosorbent assay (ELISA). Moreover, the levels of inflammatory mediators in the supernatant of anti-IgE stimulated polyp tissues were measured using ELISA. Results: Atopic CRSwNP patients were characterized by increased eosinophil accumulation, enhanced eosinophilic inflammation (elevated IL-5, ECP, and total IgE), and significantly increased GATA-3 mRNA levels (P<0.05), whereas both atopic and non-atopic CRSwNP patients showed decreased FOXP3 mRNA expression (P<0.05). After addition of anti- IgE stimulation, atopic CRSwNP patients produced more IL-5, IL-2, IL-10, IL-17A, and PGD2 in the supernatant of stimulated polyp tissues than nonatopic CRSwNP patients did. Conclusions: Atopic and nonatopic CRSwNP patients may possess the patterns of inflammatory response in polyp tissues.
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Yongshen Ren,Bing Liu,Zehui Zhang,Jintao Lin 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
Three kinds of silver-exchanged phosphotungstic acid catalysts were prepared and used for the synthesisof potential biofuel 5-ethoxymethylfurfural (EMF). It was found that the partially silver exchangedphosphotungstic acid (Ag1H2PW) showed the best catalytic activity among silver exchangedphosphotungstic acids prepared. The highest EMF yield of 88.7% was obtained from 5-hydroxymethylfurfural(HMF) at 100 8C after 10 h. Furthermore, Ag1H2PW also showed high catalytic activity for theone-pot conversion of fructose into EMF with a yield of 69.5%. In addition, Ag1H2PW could be reusedseveral times without a significant loss of its catalytic activity.
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Deyou Yu,Minghua Wu,Junxiong Lin,Jintao Zhu 한국섬유공학회 2018 Fibers and polymers Vol.19 No.9
Conventional cotton bleaching is highly energy-intensive, water-dependent, and textile-damaging. The technologies currently used to achieve low-temperature bleaching always include a conflict between effectiveness and cost. This study represents an economically efficient process for cotton bleaching with H2O2 at low temperature. A novel system that couples Cu2+ with HCO3 −, has been developed to activate cotton bleaching. Factors that influence the bleaching performance were investigated, including the bleaching temperature and initial concentrations of the components (H2O2, NaHCO3 and Cu2+). The experimental results indicated that the Cu2+-HCO3 −/H2O2 system had a lower operating cost and higher bleaching efficiency than conventional and TAED-activated systems. Additionally, the bleaching bath exhibited excellent reusability, further strengthening its feasibility for industrial applications. The results of HO• scavenging and Cu2+ monitoring experiments implied that the bleaching active species might be the Cu(III) species rather than HO•. This novel system provides a simple, effective, and cost-efficient method for practical bleaching.
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