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您的检索式：作者名="Kangle Niu"
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| 1 | A new method of micro-motion parameters estimation based on cyclic autocorrelation function显示文摘Signals with sinusoidal frequency modulation(FM)are the general form of micro-Doppler signals in radar echoes from targets with micro-motions.This paper derives the cyclic autocorrelation function of a sinusoidal FM signal using its cyclostationary characteristics,and estimates the parameters of amplitude,modulation index,micro-motion period and noise power based on cyclic autocorrelation function.The estimation method is robust in noise environment when compared with conventional time-frequency analysis methods.Finally,the performances of estimation by utilizing the simulation data and darkroom measurement are shown in tables.The Monte-Carlo simulation results show that the estimator is asymptotically optimal at SNR above6 dB. | NIU Jie LI KangLe JIANG WeiDong LI Xiang KUANG GangYao ZHU HongYu | 2013 | Science China(Information Sciences)2013，56，10： | 4 |
| 2 | Redesigning transcription factor Cre1 for alleviating carbon catabolite repression in Trichoderma reesei显示文摘Carbon catabolite repression(CCR),which is mainly mediated by Cre1 and triggered by glucose,leads to a decrease in cellulase production in Trichoderma reesei.Many studies have focused on modifying Cre1 for alleviating CCR.Based on the homologous alignment of CreA from wild-type Penicillium oxalicum 114–2(Po-0)and cellulase hyperproducer JUA10-1(Po-1),we constructed a C-terminus substitution strain—Po-2—with decreased transcriptional levels of cellulase and enhanced CCR.Results revealed that the C-terminal domain of CreAPo−1 plays an important role in alleviating CCR.Furthermore,we replaced the C-terminus of Cre1 with that of CreAPo−1 in T.reesei(Tr-0)and generated Tr-1.As a control,the C-terminus of Cre1 was truncated and Tr-2 was generated.The transcriptional profiles of these transformants revealed that the C-terminal chimera greatly improves cellulase transcription in the presence of glucose and thus upregulates cellulase in the presence of glucose and weakens CCR,consistent with truncating the C-terminus of Cre1 in Tr-0.Therefore,we propose constructing a C-terminal chimera as a new strategy to improve cellulase production and alleviate CCR in the presence of glucose. | Lijuan Han Kuimei Liu Wei Ma Yi Jiang Shaoli Hou Yinshuang Tan Quanquan Yuan Kangle Niu Xu Fang | 2020 | Synthetic and Systems Biotechnology2020，5，3： | 0 |
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