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Three species of the family Noctuidae (Lepidoptera) new to China
Hui-Lin HAN,Zhao-Yao DUAN,Zhi-Wei FENG2 한국곤충학회 2008 Entomological Research Vol.38 No.3
Three species of the family Noctuidae –- Phlogophora striatovirens (Moore, 1867), Usbeca kulmburgi (Rebel, 1918) and Feliniopsis leucostigma (Moore, 1867) –- are reported for the first time from China. Photographs of adults and genital characteristics are provided.
Duan Feng,Jin Bao-Sheng,Huang Ya-Ji,Li Bin,Sun Yu,Wu Yiming,Zhang Ming-Yao 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.6
High temperature preheated air and steam as gasifying agent and coal gasification was performed in a pressurized turbulent circulating fluidized bed (CFB) gasification pilot plant to investigate the pressurized gasification process and estimate its potential. Within the scope of this paper this test facility as well as its operation behavior was described. Furthermore, the parameter pressure has been investigated regarding its influence on the syngas composition and was presented and discussed in the following. The results show that the gasification quality is improved at higher pressure because of the better fluidization in the reactor. Coal gasification at a higher pressure shows advantages in lower heat value and carbon conversion. With the gasifier pressure increased from 0.1MPa to 0.3MPa, the gas heating value is increased by 15%. Increasing the gasifier pressure would increase the carbon conversion from 57.52% to 76.76%. Also, the dry gas yield and efficiency of cold gas increase little with the increase of the gasifier pressure. The operating parameter of pressure exists at optimum operating range for this specific CFB coal gasification process.
Duan, Xue-Feng,Wang, Qing-Wen,Li, Chun-Mei The Korean Society for Computational and Applied M 2012 Journal of applied mathematics & informatics Vol.30 No.3
Based on the elegant properties of the spectral norm and Thompson metric, we firstly give two perturbation estimates for the positive definite solution of the nonlinear matrix equation $$X-\sum^m_{i=1}A^{\ast}_iX^{\delta_i}A_i=Q(0<|{\delta}_i|<1)$$ which arises in an optimal interpolation problem.
Quantitative Susceptibility Mapping of Brain Iron Deposition in Patients With Recurrent Depression
Duan Xinxiu,Xie Yuhang,Zhu Xiufang,Chen Lei,Li Feng,Feng Guoquan,Li Lei 대한신경정신의학회 2022 PSYCHIATRY INVESTIGATION Vol.19 No.8
Objective Recurrence is the most significant feature of depression and the relationship between iron and recurrent depression is still lack of direct evidence in vivo.Methods Twenty-one patients with depression and twenty control subjects were included. Gradient-recalled echo, T1 and T2 images were acquired using a 3.0T MRI system. After quantitative susceptibility mapping were reconstructed and standardized, a whole-brain and the regions of interest were respectively analyzed.Results Significant increases in susceptibility were found in multiple recurrent depression patients, which involved several brain regions (frontal lobes, temporal lobe structures, occipital lobes hippocampal regions, putamen, thalamus, cingulum, and cerebellum). Interestingly, no susceptibility changes after treatment compared to pre-treatment (all p>0.05) and no significant correlation between susceptibility and Hamilton Depression Rating Scale were found. Besides, it was close to significance that those with a higher relapse frequency or a longer mean duration of single episode had a higher susceptibility in the putamen, thalamus, and hippocampus. Further studies showed susceptibility across the putamen (ρ<sup>2</sup>=0.27, p<0.001), thalamus (ρ<sup>2</sup>=0.21, p<0.001), and hippocampus (ρ<sup>2</sup>=0.19, p<0.001) were strongly correlated with total course of disease onset.Conclusion Brain iron deposition is related to the total course of disease onset, but not the severity of depression, which suggest that brain iron deposition may be a sign of brain damage in multiple recurrent depression.
Duan-Jian Tao,Xiang-Shu Chen,Shu Xu,Feng-Feng Chen,Yan Zhou,Xin Zhao,Li-Li Yu,Kuan Huang 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.12
The hydrolysis of cinnamaldehyde to natural benzaldehyde was investigated systematically using tetramethylammonium- based amino acid ionic liquids as homogeneous catalysts. The results indicated that tetramethylammonium prolinate ([N1111][Pro]) can be a powerful catalyst for the highly efficient hydrolysis of cinnamaldehyde, in which natural benzaldehyde was obtained with almost 94% yield and over 99% selectivity in 1 h. Moreover, kinetic study showed that compared with other catalysts, the catalytic system of [N1111][Pro] has a lower activation energy of 38.30 kJ·mol−1 in the hydrolysis reaction, indicating superior catalytic performance of [N1111][Pro]. Quantum-mechanical calculations further manifested that such high performance originates from the cooperative catalysis of the secondary amino and carboxyl group in the anion [Pro].
Duan-Jian Tao,Yan Dong,Zhi-Jun Cao,Feng-Feng Chen,Xiang-Shu Chen,Kuan Huang 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.41 No.-
A series of sulfonic functionalized ionic liquids (SFILs) with different acidity were designed and preparedfor the synthesis of terpene esters (e.g. geranyl acetate). The effect of acidity of SFILs on their performancewas investigated systematically. It is found that tuning the acidity of SFILs to an appropriate value resultsin not only high conversion of geraniol but also superior selectivity of geranyl acetate. The SFILs can beeasily separated from products byfiltration under room temperature, thus showing good reusability. Furthermore, the kinetics for SFILs in the esterification of geraniol were determined as the basis for futureprocess design.
A UNIFORM STRONG LAW OF LARGE NUMBERS FOR PARTIAL SUM PROCESSES OF FUZZY RANDOM SETS
Xue-feng Duan,Qing-wen Wang,Chun-mei Li 한국전산응용수학회 2012 Journal of applied mathematics & informatics Vol.30 No.3
Based on the elegant properties of the spectral norm and Thompson metric,we firstly give two perturbation estimates for the positive definite solution of the nonlinear matrix equation [수식] which arises in an optimal interpolation problem.
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.
Feng Zhang,Guang Ren Duan 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.5
This paper tackles the problem of integrated translation and rotation stabilization of the spacecraft in proximity operations by proposing a novel manipulator actuation strategy. To do so, by theoretically integrating the attitude/position motion of the spacecraft and the joint motion of the manipulator, a coupled translational and rotational kinematics of the spacecraft with a single space manipulator mounted is formulated, where system unknown parameters and residual system momentum are taken into account and analyzed. Taking the joint motion as the control input, a projection-based adaptive control scheme is then developed such that the translation and rotation of the spacecraft can be robustly stabilized with the manipulator-based actuation. The closed-loop asymptotic stability is guaranteed within Lyapunov framework. Meanwhile, considering the constrained joint motion of the manipulator, the resulting control constraint issue is handled by developing an optimization based bound analysis method, which also facilitates the determination of control parameters. Two scenario numerical simulations demonstrate the effect of the designed control scheme.