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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2021年第9期22卷 751-759页

作者： Hui ZHANG Zhen YANG Yu-qi CAO zhi-gang mou Xin CAO Jian-hua SUN School of Chemistry and Environmental Engineering Institute of Advanced Functional Materials for EnergyJiangsu University of TechnologyChangzhou 213001China

The triazine-based carbon nitride known as polytriazine imide(PTI)is a metal-free semiconductor photocatalyst but usually shows moderate activity due to its limited charge transfer ***,carbon self-doped PTI(C-PTI)was prepared via a facile and green method by using glucose as the carbon *** the condensation process,glucose can promote nanotube formation,giving the product larger surface ***,carbon self-doping induces an intrinsic change in the electronic structure,thus optimizing the band structure and the electronic transport ***,the as-synthesized C-PTI exhibits remarkably enhanced photocatalytic activities for both hydrogen evolution and tetracycline degradation reactions.

关键词： Polytriazine imide(PTI) Photocatalysis Hydrogen evolution Tetracycline degradation

Induced neural stem cells regulate microglial activation through Akt-mediated upregulation of CXCR4 and Crry in a mouse model of closed head injury

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Neural Regeneration Research 2025年第5期20卷 1416-1430页

作者： mou Gao Qin Dong Dan Zou zhijun Yang Lili Guo Ruxiang Xu Department of Neurosurgery Sichuan Academy of Medical Sciences and Sichuan Provincial People’s HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengduSichuan ProvinceChina Department of Neurosurgery Chinese PLA General HospitalBeijingChina Department of Neurology Fu Xing HospitalCapital Medical UniversityBeijingChina

Microglial activation that occurs rapidly after closed head injury may play important and complex roles in neuroinflammation-associated neuronal damage and *** previously reported that induced neural stem cells can modulate the behavior of activated microglia via CXCL12/CXCR4 signaling,influencing their activation such that they can promote neurological ***,the mechanism of CXCR4 upregulation in induced neural stem cells remains *** this study,we found that nuclear factor-κB activation induced by closed head injury mouse serum in microglia promoted CXCL12 and tumor necrosis factor-αexpression but suppressed insulin-like growth factor-1 ***,recombinant complement receptor 2-conjugated Crry(CR2-Crry)reduced the effects of closed head injury mouse serum-induced nuclear factor-κB activation in microglia and the levels of activated microglia,CXCL12,and tumor necrosis factor-α.Additionally,we observed that,in response to stimulation(including stimulation by CXCL12 secreted by activated microglia),CXCR4 and Crry levels can be upregulated in induced neural stem cells via the interplay among CXCL12/CXCR4,Crry,and Akt signaling to modulate microglial *** agreement with these in vitro experimental results,we found that Akt activation enhanced the immunoregulatory effects of induced neural stem cell grafts on microglial activation,leading to the promotion of neurological recovery via insulin-like growth factor-1 secretion and the neuroprotective effects of induced neural stem cell grafts through CXCR4 and Crry upregulation in the injured cortices of closed head injury ***,these beneficial effects of Akt activation in induced neural stem cells were positively correlated with the therapeutic effects of induced neural stem cells on neuronal injury,cerebral edema,and neurological disorders post–closed head *** conclusion,our findings reveal that Akt activation may enhance the immunoregulatory effects of induced neura

关键词： Akt signaling cerebral edema closed head injury Crry CXCR4 induced neural stem cell microglia neuroinflammation

Navigation jamming signal recognition based on long short-term memory neural networks

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Journal of Systems Engineering and Electronics 2022年第4期33卷 835-844页

作者： FU Dong LI Xiangjun mou Weihua MA Ming OU gang College of Electronic Science and Technology National University of Defense TechnologyChangsha 410005China

This paper introduces the time-frequency analyzed long short-term memory(TF-LSTM) neural network method for jamming signal recognition over the Global Navigation Satellite System(GNSS) receiver. The method introduces the long shortterm memory(LSTM) neural network into the recognition algorithm and combines the time-frequency(TF) analysis for signal preprocessing. Five kinds of navigation jamming signals including white Gaussian noise(WGN), pulse jamming, sweep jamming, audio jamming, and spread spectrum jamming are used as input for training and recognition. Since the signal parameters and quantity are unknown in the actual scenario, this work builds a data set containing multiple kinds and parameters jamming to train the TF-LSTM. The performance of this method is evaluated by simulations and experiments. The method has higher recognition accuracy and better robustness than the existing methods, such as LSTM and the convolutional neural network(CNN).

关键词： satellite navigation jamming recognition time-frequency(TF)analysis long short-term memory(LSTM)

Direct Force Control of a Rudder with the Action of a Coplanar Waveguide Product Microwave

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Chinese Physics Letters 2011年第9期28卷 178-181页

作者： LIU Zong-Kai ZHOU Ben-mou LIU Hui-Xing LIU zhi-gang JI Yan-Liang Science and Technology on Transient Physics Laboratory Nanjing University of Science and TechnologyNanjing 210094

We investigate the distribution of electromagnetic body force in a fluid boundary layer produced by a coplanar waveguide(CPW)and focus on the fluid dynamic control effects of a *** electromagnetic body force along the CPW direction can be created by the mutual coupling of landscape orientated electric and magnetic *** CPWs arranged on the rudder's surface,a direct-force-control rudder can be realized by adjusting the microwave *** is also found that a streamwise microwave electromagnetic body force can markedly enhance lift force and suppress rudder vibration,thus improving response time lag ***,navigation stall caused by a large angle of attack can be avoided.

关键词： waveguide Waveguide microwave

Experimental study of drag reduction characteristics related to the multifactor coupling of a bionic jet surface

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Journal of Hydrodynamics 2019年第1期31卷 186-194页

作者： Yun-qing Gu Song-wei Yu Jie-gang mou Tian-xing Fan Shui-hua Zheng gang Zhao College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310014China College of Mechanical and Electrical Engineering Harbin Engineering UniversityHarbin 150001China

To study the drag reduction of a jet surface,an experiment is conducted with a gyrorotor *** aim of this study is to analyze the influence of the jet aperture,the jet angle and the rotational velocity coupled with the jet velocity on the friction torque acting on a jet surface model by using a jet surface drag reduction testing experimental *** drag reduction characteristics of the jet surface are also *** results show that the maximum drag reduction rate is attained when the jet diameter is 5 mm and the jet velocity is 1.2 m/*** influence of the jet velocity on the drag reduction rate decreases as the diameter ***,the maximum drag reduction rate can be attained when the angle of the jet is 30° and the velocity of the jet is 1.0 m/*** the jet diameter is small,the influence of the jet velocity on the drag reduction rate is small,whereas the maximum drag reduction rate is attained when the jet angle is 30° and the jet velocity is 1.0 m/*** the jet angle is 15°,the drag reduction rate fluctuation is *** maximum drag reduction rate is attained when the rotational velocity is 2 100 r/min and the jet velocity is 1.0 m/*** results show that the best scheme is A2B2D3 A maximum drag reduction rate of 8.57% can be *** effective control of the jet effect on the separation of the boundary layer demonstrates the drag reduction principle of a bionic jet surface.

关键词： Drag reduction bionic jet surface friction torque coupling experiment

Effect of small peptide(P-15) on HJMSCs adhesion to hydroxyap-atite

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Science China(Physics,Mechanics & Astronomy) 2016年第2期59卷 102-107,109-112页

作者： Wei Cheng Xin Tong Qin gang Hu Yong Bin mou Hai Yan Qin Nanjing Stomatological Hospital Medical School of Nanjing University Central Laboratory of Stomatology Nanjing Stomatological Hospital

P-15, a synthetic peptide of 15-amino acids, has been tested in clinical trials to enhance cell adhesion and promote osseointe-gration. This feature of P-15 has also inspired the development of designing new bone substitute materials. Despite the increasing applications of P-15 in bone graft alternatives, few studies focus on the mechanism of cell adhesion promoted by P-15 and the mechanical property changes of the cells interacting with P-15. In this article, we used atomic force microscope(AFM) based single cell indentation force spectroscopy to study the impact of P-15 on the stiffness and the adhesion ability of human jaw bone mesenchymal stem cells(HJMSCs) to hydroxyapatite(HA). We found that the stiffness of HJMSCs increases as the concentration of P-15 grows in short culture intervals and that the adhesion forces between HJMSCs and HA particles in both the presence and absence of P-15 are all around 30 p N. Moreover, by calculating the binding energy of HJMSCs to HA particles mixed with and without P-15, we proved that P-15 could increase the adhesion energy by nearly four times. Scanning electron microscope(SEM) was also exploited to study the morphology of HJMSCs cultured in the presence and absence of P-15 on HA disc surface for a short term. Apparent morphological differences were observed between the cells cultured with and without P-15. These results explain the probable underlying adhesion mechanism of HJMSC promoted by P-15 and can serve as the bases for the design of bone graft substitute materials.

关键词： atomic force microscopy (AFM) cell stiffness force spectroscopy

A Study of Soil-dynamics Based on a Simulated Drought in an Alpine Meadow on the Tibetan Plateau

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Journal of mountain Science 2013年第5期10卷 833-844页

作者： WANG zhi-yuan SUN Geng LUO Peng mou Cheng-xiang WANG Jun Center for Ecological Studies Chengdu Institute of BiologyChinese Academy of Sciences University of Chinese Academy of Sciences

Extreme weather events have played an important role in driving the ecosystem dynamics in high altitude areas, but the underlying mechanism remains unclear. To understand if and how the soil processes of an ecosystem react to extreme drought, we manipulated a once-in-a-century meteorological extreme drought in an alpine meadow on the Tibetan Plateau, which is also known as the ＂forerunner of global weather changes＂. The extremity was determined by statistical extreme weather events with respect to a historical reference period from April to September during 1962 - 2004, where the local historical precipitation data was calculated and intensified to loo-year recurrent drought event with Gumbel I distribution. The indicators we measured included soil microbial biomass C/N/P and soil enzymatic activities of phosphatase （AP） disbounding organic phosphate, cellobiohydrolase （CBH）, β- glucocidase （BG）, N-releasing enzyme N-acetyl- glucosaminidase （NAG） as well as soil respirations, during and after the treatments. It was found that the manipulated event induced a rapid shift in microbial biomass and activities, indicating a lower resistance of the underground process. However, the microbial and biochemical parameters saw rapid recovery after the event, which meant the soil processes enjoyed high resilience. The high responsiveness and lag-time effects of the soil indicators rendered new horizons for us to evaluate the interaction between the extremes and the ecosystem stability. Our study indicated that the once-in-a-century extreme drought induced very short term response in the soil biotic process, and the soil processes worked to buffer against such events under the observation period.

关键词： Extreme weather event Soil enzyme Microbial biomass Nutrient availability

Robust Tracking Control for Self-balancing Mobile Robots Using Disturbance Observer

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IEEE/CAA Journal of Automatica Sinica 2017年第3期4卷 458-465页

作者： mou Chen College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China IEEE

In this paper,a robust tracking control scheme based on nonlinear disturbance observer is developed for the self-balancing mobile robot with external unknown disturbances.A desired velocity control law is firstly designed using the Lyapunov analysis method and the arctan *** improve the tracking control performance,a nonlinear disturbance observer is developed to estimate the unknown disturbance of the self-balancing mobile *** the output of the designed disturbance observer,the robust tracking control scheme is presented employing the sliding mode method for the selfbalancing mobile *** simulation results further demonstrate the effectiveness of the proposed robust tracking control scheme for the self-balancing mobile robot subject to external unknown disturbances.

关键词： Disturbance observer robust tracking control self-balancing mobile robot sliding mode control(SMC)

4d金属掺杂MoS_(2)改善对NO_(2)传感性能的机理研究

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原子与分子物理学报 2025年第2期42卷 175-181页

作者：潘一翠罗磊高鑫付岳牟芷瑶朱洪强冯庆重庆师范大学物理与电子工程学院重庆401331 重庆市光电功能材料重点实验室重庆401331

二硫化钼(MoS_(2))是一种热门的气体传感器材料.针对MoS_(2)与气体分子之间的弱相互作用问题,掺杂是一种有效的解决方式.本文利用基于密度泛函理论(DFT)的第一性原理平面波超软赝势计算方法,对二氧化氮(NO_(2))分子在4d金属掺杂后的MoS_... 详细信息

二硫化钼(MoS_(2))是一种热门的气体传感器材料.针对MoS_(2)与气体分子之间的弱相互作用问题,掺杂是一种有效的解决方式.本文利用基于密度泛函理论(DFT)的第一性原理平面波超软赝势计算方法,对二氧化氮(NO_(2))分子在4d金属掺杂后的MoS_(2)表面上吸附的微观机制进行了理论研究.研究结果表明:4d过渡金属元素掺杂有利于提高MoS_(2)吸附NO_(2)后的稳定性,且掺杂改变了材料表面的还原性,改善了其传感性能.掺入4d金属原子的材料禁带宽度显著减小,并且在费米能级附近形成了新的杂质峰,这大大提升了它的导电性.且掺杂原子的4d与5s轨道电子之间的协同作用会提升气体分子与材料之间的传感特性,这表明4d金属原子掺入MoS_(2)可以成为一种有效的NO_(2)传感器材料.本文的工作有助于寻求合适的化学掺杂的方法来提高MoS_(2)基气体传感器的性能.

关键词： MoS_(2) NO_(2) 吸附掺杂第一性原理计算

Differential physiological responses of the coastal cyanobacterium Synechococcus sp. PCC7002 to elevated pCO2 at lag, exponential,and stationary growth phases

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Science China Earth Sciences 2018年第10期61卷 1397-1405页

作者： Shanli mou gang LI Hongmei LI Fazhong LI zhisheng SHAO Jinsong LI Changfeng QU Yongyu ZHANG Key Laboratory of Biofuels Shandong Provincial Key Laboratory of Energy Genetics Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301 China Zhanjiang Branch of China National Offshore Oil Corporation Ltd. Zhanjiang 524000 China Key Laboratory of Marine Bioactive Substance the First Institute of OceanographyState Oceanic AdministrationQingdao 266061 China

We studied the effects of expected end-of-the-century p CO_2(1000 ppm)on the photosynthetic performance of a coastal marine cyanobacterium Synechococcus ***7002 during the lag,exponential,and stationary growth *** p CO_2significantly stimulated growth,and enhanced the maximum cell density during the stationary *** ambient p CO_2conditions,the lag phase lasted for 6 days,while elevated p CO_2shortened the lag phase to two days and extended the exponential phase by four *** elevated p CO_2increased photosynthesis levels during the lag and exponential phases,but reduced them during the stationary ***,the elevated p CO_2reduced the saturated growth light(Ik)and increased the light utilization efficiency(α)during the exponential and stationary phases,and elevated the phycobilisome:chlorophyll a(Chl a)***,the elevated p CO_2reduced the particulate organic carbon(POC):Chl a and particulate organic nitrogen(PON):Chl a ratios during the lag and stationary phases,but enhanced them during the exponential ***,Synechococcus showed differential physiological responses to elevated p CO_2during different growth phases,thus providing insight into previous studies that focused on only the exponential phase,which may have biased the results relative to the effects of elevated p CO_2in ecology or aquaculture.

关键词： Elevated pCO2 Lag Exponential and stationary phases Photosynthetic performance Synechococcus