Life history responses of the cabbage beetle Colaphellus bowringi to temperature change

Jian‐Jun Tang,Hai-Min HE,Ting GENG,Shu FU,Fang-Sen XUE 한국곤충학회 2016 Entomological Research Vol.46 No.6

Temperature is considered one of the most important mediators of phenotypic plasticity in ectotherms. Here, we investigated life history traits of the cabbage beetle, Colaphellus bowringi Baly (Coleoptera: Chrysomelidae), at a wide range of temperatures (16, 19, 22, 24, 26 and 28°C). The larval and pupal times were significantly decreased with increasing rearing temperature and growth rate was positively correlated with temperature. However, the relationship between body size and rearing temperature in C. bowringi did not follow the temperature–size rule; both males and females reached the highest body weight at 19°C. Females were significantly larger than males at all temperatures. Male pupae lost significantly more weight at metamorphosis compared to females. However, diapausing males gained significantly higher weight after feeding compared to diapausing females at higher temperatures of 22, 24, 26 and 28°C. Body weight tended to decrease with increasing rearing temperature, whereas sexual size dimorphism (SSD) tended to increase with increasing rearing temperature; thus, Rensch's rule is upheld. The degree to which SSD changed with temperature varied with different development stages. SSD was lowest in pupae, highest in newly emerged adults and intermediate in diapausing adults.

Bronchopulmonary Infection of Lophomonas blattarum

Jian Xue,Ying-Li Li,Xue-Mei Yu,Dai-Kun Li,Ming-Fang Liu,Jing-Fu Qiu,Jian-Jiang Xue 대한기생충학열대의학회 2014 The Korean Journal of Parasitology Vol.52 No.5

Seismic performance of mixed column composed of square CFST column and circular RC column in Chinese archaized buildings

Jian-yang Xue,Chaofeng Zhou,Jianpeng Lin 국제구조공학회 2018 Steel and Composite Structures, An International J Vol.29 No.4

This paper presents some quasi-static tests for 4 mixed columns composed of CFST column and RC column. The seismic performance and failure mode were studied under low-cyclic revised loading. The failure mode was observed under different axial compression ratios. The hysteretic curve and skeleton curve were obtained. The effects of axial compression ratio on yield mechanism, displacement ductility, energy dissipation, stiffness and strength attenuation were analyzed. The results indicate that the failure behavior of CFST-RC mixed column with archaized style is mainly caused by bending failure and accompanied by some shear failure. The axial compression ratio performs a control function on the yielding order of the upper and lower columns. The yielding mechanism has a great influence on the ductility and energy dissipation capacity of specimens. Based on the experiment, finite element analysis was made to further research the seismic performance by ABAQUS software. The variable parameters were stiffness ratio of upper and lower columns, axial compression ratio, yielding strength of steel tube, concrete strength and rebar ratio. The simulation results show that with the increase of stiffness ratio of the upper and lower columns, the bearing capacity and ductility of specimens can correspondingly increase. As the axial compression ratio increases, the ductility of the specimen decreases gradually. The other three parameters both have positive effect on the bearing capacity but have negative effect on the ductility. The results can provide reference for the design and engineering application of mixed column consisted of CFST-RC in Chinese archaized buildings.

High alcohol-soluble MoOx gel for interfacial layer in organic solar cells

Jian Xiong,Zhen He,Shiping Zhan,Bingchu Yang,Xiaowen Zhang,Ping Cai,Cong Xu,Xiaogang Xue,Jian Zhang 한국물리학회 2017 Current Applied Physics Vol.17 No.8

Water-free solvent soluble, low-temperature processed metal oxides are important for preparing efficient and stable electronic devices, as well as the convenience in simplifying the device production process. Here we reported a facile approach with the features of low-temperature and solution-based process for the formation of a MoOx (s-MoOx) film as interface layer in polymer solar cells (PSCs). The absorbability, elementary composition, electronic property and surface microstructure of the s-MoOx are investigated in detail by ultravioletevisible spectrophotometer (UVevis), X-ray photoelectron spectrometry (XPS), ultraviolet photo-electron spectrometer (UPS) and atomic force microscopy (AFM). These investigations confirmed that such MoOx xerogel has high solubility in the organic alcohol solvents, such as ethanol and methanol. Meanwhile, this s-MoOx can be applied as the interfacial layer in organic solar cells via a low-temperature treatment (about 100 C) due to its proper physical properties, and a power conversion efficiency (PCE) over 3% was achieved. In addition, the devices with s-MoOx shows excellent air-stability, and the PCE efficiency can maintain about 84% of its initial value after 100 h exposure in air, which is dramatically enhanced comparing with the common devices with PEDOT:PSS layer.

Experimental and numerical studies on the frame-infill in-teraction in steel reinforced recycled concrete frames

Jian-yang Xue,Xiaogang Huang,Zheng Luo,Liang Gao 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.20 No.6

Masonry infill has a significant effect on stiffness contribution, strength and ductility of masonry-infilled frames. These effects may cause damage of weak floor, torsional damage or short-column failure in structures. This article presents experiments of 1/2.5-scale steel reinforced recycled aggregates concrete (SRRC) frames. Three specimens, with different infill rates consisted of recycled concrete hollow bricks (RCB), were subjected to static cyclic loads. Test phenomena, hysteretic curves and stiffness degradation of the composite structure were analyzed. Furthermore, effects of axial load ratio, aspect ratio, infill thickness and steel ratio on the share of horizontal force supported by the frame and the infill were obtained in the numerical example.

Regulation of matrix metalloproteinase-9 protein expression by 1α , 25-(OH)2D3 during osteoclast differentiation

Jian-Hong Gu,Xi-Shuai Tong,Guohong Chen,Xue-Zhong Liu,Jian-Chun Bian,Yan Yuan,Zong-Ping Liu 대한수의학회 2014 Journal of Veterinary Science Vol.15 No.1

To investigate 1α,25-(OH)2D3 regulation of matrixmetalloproteinase-9 (MMP-9) protein expression duringosteoclast formation and differentiation, receptor activator ofnuclear factor κB ligand (RANKL) and macrophagecolony-stimulating factor (M-CSF) were administered toinduce the differentiation of RAW264.7 cells into osteoclasts. The cells were incubated with different concentrations of1α,25-(OH)2D3 during culturing, and cell proliferation wasmeasured using the methylthiazol tetrazolium method. Osteoclast formation was confirmed using tartrate-resistantacid phosphatase (TRAP) staining and assessing bone lacunarresorption. MMP-9 protein expression levels were measuredwith Western blotting. We showed that 1α,25-(OH)2D3inhibited RAW264.7 cell proliferation induced by RANKLand M-CSF, increased the numbers of TRAP-positiveosteoclasts and their nuclei, enhanced osteoclast boneresorption, and promoted MMP-9 protein expression in aconcentration-dependent manner. These findings indicatethat 1α,25-(OH)2D3 administered at a physiological relevantconcentration promoted osteoclast formation and couldregulate osteoclast bone metabolism by increasing MMP-9protein expression during osteoclast differentiation.

Dynamic experimental study on single and double beam-column joints in steel traditional-style buildings

Jian-yang Xue,Liangjie Qi,Kun Yang,Zhanjing Wu 국제구조공학회 2017 Structural Engineering and Mechanics, An Int'l Jou Vol.63 No.5

In order to study the failure mode and seismic behavior of the interior-joint in steel traditional-style buildings, a single beam-column joint and a double beam-column joint were produced according to the relevant building criterion of ancient architectural buildings and the engineering instances, and the dynamic horizontal loading test was conducted by controlling the displacement of the column top and the peak acceleration of the actuator. The failure process of the specimens was observed, the bearing capacity, ductility, energy dissipation capacity, strength and stiffness degradation of the specimens were analyzed by the load-displacement hysteresis curve and backbone curve. The results show that the beam end plastic hinge area deformed obviously during the loading process, and tearing fracture of the base metal at top and bottom flange of beam occurred. The hysteresis curves of the specimens are both spindle-shaped and plump. The ultimate loads of the single beam-column joint and double beam-column joint are 48.65 kN and 70.60 kN respectively, and the equivalent viscous damping coefficients are more than 0.2 when destroyed, which shows the two specimens have great energy dissipation capacity. In addition, the stiffness, bearing capacity and energy dissipation capacity of the double beam-column joint are significantly better than that of the single beam-column joint. The ductility coefficients of the single beam-column joint and double beam-column joint are 1.81 and 1.92, respectively. The cracks grow fast when subjected to dynamic loading, and the strength and stiffness degradation is also degenerated quickly.

Experimental studies on steel frame structures of traditional-style buildings

Jian-yang Xue,Liangjie Qi 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.22 No.2

This paper experimentally investigated the behavior of steel frame structures of traditional-style buildings subjected to combined constant axial load and reversed lateral cyclic loading conditions. The low cyclic reversed loading test was carried out on a 1/2 model of a traditional-style steel frame. The failure process and failure mode of the structure were observed. The mechanical behaviors of the steel frame, including hysteretic behaviors, order of plastic hinges, load-displacement curve, characteristic loads and corresponding displacements, ductility, energy dissipation capacity, and stiffness degradation were analyzed. Test results showed that the Dou-Gong component (a special construct in traditional-style buildings) in steel frame structures acted as the first seismic line under the action of horizontal loads, the plastic hinges at the beam end developed sufficiently and satisfied the Chinese Seismic Design Principle of "strong columns-weak beams, strong joints-weak members". The pinching phenomenon of hysteretic loops occurred and it changed into Z-shape, indicating shear-slip property. The stiffness degradation of the structure was significant at the early stage of the loading. When failure, the ultimate elastic-plastic interlayer displacement angle was 1/20, which indicated high collapse resistance capacity of the steel frame. Furthermore, the finite element analysis was conducted to simulate the behavior of traditional-style frame structure. Test results agreed well with the results of the finite element analysis.

Risk of Trastuzumab-Related Cardiotoxicity in Early Breast Cancer Patients: A Prospective Observational Study

Jian Xue,Zefei Jiang,Fan Qi,Shuanghong Lv,Shaohua Zhang,Tao Wang,Xiaozhong Zhang 한국유방암학회 2014 Journal of breast cancer Vol.17 No.4

Purpose: In the present study, we investigated the incidence ofcardiotoxicity within 5 years of trastuzumab treatment and evaluatedpotential risk factors in clinical practice. Methods: The studycohort included 415 patients diagnosed with early breast cancer(EBC). Cardiotoxicity incidence was evaluated in patients receivingtrastuzumab and those who did not. Multivariate Cox proportionalhazards regression models were used to estimate hazardratios and 95% confidence intervals of potential risk factorsfor trastuzumab-related cardiotoxicity after appropriate adjustments. Results: Incidence of cardiotoxicity in patients treatedwith trastuzumab was significantly higher than that in controls(23.7% vs. 10.8%, p<0.001). This result was adjusted for factorsthat might increase the risk of cardiotoxicity, such as historyof coronary artery diseases or the use of anthracyclines for morethan four cycles. Conclusion: Our findings indicated that treatmentwith trastuzumab was strongly associated with cardiotoxicityin EBC patients.

Seismic Performance of Steel Joints Between Double Beams and Column in Chinese Traditional Style Buildings

Jian-yang Xue,Linlin Ma,Zhanjing Wu 한국강구조학회 2018 International Journal of Steel Structures Vol.18 No.2

This paper presents experimental study and fi nite-element analysis (FEA) on seismic performance of steel joints between double beams and column (DBC) in Chinese traditional style buildings. Eight 1/2-scaled DBC joints were designed according to the principle of “strong-member and weak-joint” and tested under low cyclic reversed loading. The failure modes, hysteresis loops, skeleton curves, ductility and energy-dissipation capacity of the joints were analyzed. It is shown that the failure modes of the joints were shear buckling at lower panel zone, bending failure at middle panel zone, and welds fracturing at the panel zone of the joints. The section types of beams, axial compression ratio, and joint forms between double beams and column had signifi cant impacts on the bearing capacity of the joints. The bearing capacity of the joints decreased as the axial compression ratio increased. Moreover, the bearing capacity of the joints with box beams was larger than that of the joints with H-section beams. Elaborate FEA models of the joints were presented, and a preliminary FEA was fi rst performed to predict the mechanical properties and hysteretic behaviors of the joints. The results of FEA were correlated well with those of test, and the eff ect of the panel zone thickness on mechanical behaviors of the joints was analyzed, which indicated that the simplifi ed FEA model could provide a powerful tool for future research in design methods of DBC joints in Chinese traditional style buildings.