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Plasma Science and Technology 2011年第4期13卷 451-457页

作者：刘秋艳李弘陈志鹏谢锦林刘万东 CAS Key laboratory of basic Plasma Physics Department of Modern PhysicsUniversity of Science and Technology of China

Continuous emission spectrum measurement is applied for the inconvenient diagnos- tics of low-temperature collisional plasmas. According to the physical mechanism of continuous emission, a simplified model is presented to analyze the spectrum in low temperature plasma. The validity of this model is discussed in a wide range of discharge parameters, including electron tem- perature and ionization degree. Through the simplified model, the continuous emission spectrum in a collisional argon internal inductively coupled plasma is experimentally measured to determine the electron temperature distribution for different gas pressures and radio-frequency powers. The inverse Abel transform is also applied for a better spatially resoluted results. Meanwhile, the result of the continuous emission spectrum measurement is compared to that of the electrostatic double probes, which indicates the effectiveness of this method.

关键词： continuous emission spectrum diagnostics low-temperature plasma colli- sional plasma

A Method to Construct Plasma with Nonlinear Density Enhancement Effect in Multiple Internal Inductively Coupled Plasmas

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Plasma Science and Technology 2011年第2期13卷 175-180页

作者：陈志鹏李弘刘秋艳罗辰谢锦林刘万东 CAS Key laboratory of basic Plasma Physics Department of Modern Physics University of Science and Technology of China

A method is proposed to built up plasma based on a nonlinear enhancement phenomenon of plasma density with discharge by multiple internal antennas simultaneously. It turns out that the plasma density under multiple sources is higher than the linear summation of the density under each source. This effect is helpful to reduce the fast exponential decay of plasma density in single internal inductively coupled plasma source and generating a larger-area plasma with nmltiple internal inductively coupled plasma sources. After a careful study on the balance between the enhancement and the decay of plasma density in experiments, a plasma is built up by four sources, which proves the feasibility of this method. According to the method, more sources and more intensive enhancement effect can be employed to further build up a high-density, large-area plasma for different applications.

关键词： inductively coupled plasmas multiple sources density enhancement construct plasma

Relativistic correction of （v/c）2 to the collective Thomson scattering for high-temperature high-density plasma

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Chinese Physics B 2011年第9期20卷 282-289页

作者：蒋陈凡夫郑坚赵斌 CAS Key laboratory of basic Plasma Physics Department of Modern PhysicsUniversity of Science and Technology of China

Collective Thomson scattering is theoretically investigated with the inclusion of the relativistic correction of （v/c）2. The correction is rather small for the plasma parameters inferred from the spectra of the thermal electron plasma waves in the plasma. Since the full formula of the corrected result is rather complicated, a simplified one is derived for practical use, which is shown to be in good agreement with the un-simplified one.

关键词： Thomson scattering relativistic effect

MicroRNA-132 in the Adult Dentate Gyrus is Involved in Opioid Addiction Via Modifying the Differentiation of Neural Stem Cells

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Neuroscience Bulletin 2019年第3期35卷 486-496页

作者： Meng Jia Xuewei Wang Haolin Zhang Can Ye Hui Ma Mingda Yang Yijing Li Cailian Cui Department of Neurobiology School of Basic Medical Sciences Key Laboratory for Neuroscience of the Ministry of Education and National Health and Family Planning Commission Neuroscience Research Institute Peking University

MicroRNA-132(miR-132), a small RNA that regulates gene expression, is known to promote neurogenesis in the embryonic nervous system and adult *** exposure to psychoactive substances can increase miR-132 expression in cultured neural stem cells(NSCs)and the adult brain of rodents, little is known about its role in opioid addiction. So, we set out to determine the effect of miR-132 on differentiation of the NSCs and whether this effect is involved in opioid addiction using the rat morphine self-administration(MSA) model. We found that miR-132 overexpression enhanced the differentiation of NSCs in vivo and in vitro. Similarly, speci?c overexpression of miR-132 in NSCs of the adult hippocampal dentate gyrus(DG) during the acquisition stage of MSA potentiated morphine-seeking behavior. These ?ndings indicate that miR-132 is involved in opioid addiction,probably by promoting the differentiation of NSCs in the adult DG.

关键词： miR-132 Opioid addiction Neural stem cell Dentate gyrus

Excitation of surface plasmons at the boundary of overdense plasma

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Chinese Physics B 2008年第6期17卷 2257-2262页

作者：王亮曹金祥王艳牛田野刘磊吕铀 CAS Key laboratory of basic Plasma Physics and Department of Modern Physics University of Science and Technology of China

The excitation of surface plasmons （SPs） with a strip grating at the boundary of an unmagnetized overdense plasma has been investigated theoretically and experimentally. An incident electromagnetic radiation was p-polarized at the frequency of 5 GHz. Experiments showed that when the plasma density was four times higher than the critical density with the grating present, and the SPs could be excited at the boundary of the overdense plasma. Contribution of the glass layer in the formation of the SP dispersion relation was examined. When the incident electromagnetic radiation was coupled into SPs the coupling order with the effective permittivity was simulated qualitatively. We find that the existence of SPs at the boundary of overdense plasma indicates that the reflection coefficient of the incident electromagnetic radiation reaches its minimum and even becomes total absorption. In this work the plasma density was diagnosed by a Langmuir double probe.

关键词： surface plasmons overdense plasma electromagnetic radiation coupling order

Compensation for Neurodegeneration by Hippocampal Neurogenesis in Alzheimer’s Disease: Where is the way?

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Neuroscience Bulletin 2021年第6期37卷 885-888页

作者： Jie Zheng Yawen Li Department of Pharmacology Key Laboratory of Basic Pharmacology of Ministry of EducationJoint International Research Laboratory of Ethnomedicine of Ministry of EducationKey Laboratory of Basic Pharmacology of Guizhou ProvinceZunyi Medical UniversityZunyi 563000China Digestive Disease Institute of Guizhou Province Clinical Medical Research Center of Digestive Diseases of Guizhou ProvinceDepartment of GastroenterologyAffiliated Hospital of Zunyi Medical UniversityZunyi 563000China

Neurodegeneration,a defining hallmark of Alzheimer's disease(AD),features the progressive loss of neuronal structure and *** approaches to AD show limited efficiency in halting the neurodegeneration to *** the lack of neuronal renewability in most subareas of the adult brain,symptomatic drugs or treatments cannot repopulate neurons and rewire the degenerated neuronal circuits in AD.

关键词： degeneration Alzheimer drugs

The diversity effect of inductive reasoning under segment manipulation of complex cognition

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Science China(Life Sciences) 2005年第6期48卷 658-668页

作者： CHEN Antao LI Hong FENG Tingyong GAO Xuemei ZHANG Zhongming LI Fuhong YANG Dong School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China School of Psychology Southwest University Key Laboratory of Basic Psychology of Chongqing City Chongqing 400715 China

The present study proposed the idea of segment manipulation of complex cognition (SMCC), and technically made it possible the quantitative treatment and systematical manipula-tion on the premise diversity. The segment manipulation of complex cognition divides the previ-ous inductive strengths judgment task into three distinct steps, attempting to particularly distin-guish the psychological processes and their rules. The results in Experiment 1 showed that compared with the traditional method, the quantitative treatment and systematical manipulation of SMCC on the diversity did not change the task’s nature, and remain rational and a good measurement of inductive strength judgment. The results in Experiment 2 showed that the par-ticipants’ response rules in the triple-step task were expected from our proposal, and that in Step 2 the “feeling of surprise” (FOS), which seems implausible but predicted from the diversity premises, was measured, and its component might be the critical part that produced the diversity effect. The “feeling of surprise” may reflect the impact of emotion on cognition, representing a strong revision to premise probability principle of pure rational hypothesis proposed by Lo et al., and its roles in the diversity effect are worthy of further research. In this regards were discussed the mistakes that the premise probability principle makes when it takes posterity probability as prior probability.

关键词： inductive reasoning, segment manipulation of complex cognition (SMCC), diversity effect, feeling of surprise (FOS), Bayes theorem.

Dual-property blue and red emission carbon dots for Fe(Ⅲ)ions detection and cellular imaging

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Rare Metals 2021年第7期40卷 1957-1965页

作者： Yin-Long Xu Rui-Xue Mo Cai-Yu Qi Zeng Ren Xiu-Zhi Jia Zi-Gui Kan Cao-Long Li Fei Wang Key laboratory of Biomedical Functional Materials School of Basic ScienceChina Pharmaceutical UniversityNanjing 211198China Tibetan Medicine research Institute Tibetan Traditional Medical CollegeLasa 850000China School of basic Medical Science Harbin Medical UniversityHarbin 150081China

The excitation wavelength-dependent and-independent emissions are two crucial fluorescent properties of carbon dots(CDs).However,CDs reported till date exhibit only one of these properties,which limits their practical ***,dual-property carbon dots(DCDs)with both the excitation wavelength-dependent and-independent emissions were synthesized via a facile onestep solvothermal method using 4-(2-pyridylazo)-resorcinol as the carbon *** multi-functional applications of the resulting DCDs were also *** asprepared DCDs exhibited not only excellent monodispersity,high photostability,and storage stability,but also low toxicity,good biocompatibility,and cellular bioimaging *** addition,the DCDs exhibited excitation-dependent emission photoluminescence under low excitation *** DCDs exhibited good Fe3+detection by quenching the blue emission fluorescence and showed a relatively low Fe3+detection limit of 0.067 lmol·L-1 based on three times signal-to-noise criteria(R2=0.99).Furthermore,the DCDs showed excitation-independent emission at low excitation wavelengths and exhibited red emission at about 598 nm to avoid damage to the *** results demonstrate the excellent bioimaging properties of the *** to their dual PL properties,the as-prepared DCDs exhibited multi-functional applications:Fe3+detection and A549 cell *** results will be helpful in developing novel CDs for applications in various fields.

关键词： Carbon dots Solvothermal Dual properties Fe3+ions detection Bioimaging

MicroRNA-365 Knockdown Prevents Ischemic Neuronal Injury by Activating Oxidation Resistance 1-Mediated Antioxidant Signals

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Neuroscience Bulletin 2019年第5期35卷 815-825页

作者： Jia-Lin Mo Zhi-Guang Pan Xiao Chen Yu Lei Ling-Ling Lv Cheng Qian Feng-Yan Sun Department of Neurobiology and Institute for basic research on Aging and Medicine School of Basic Medical Sciences Fudan University Shanghai 200032 China Department of Neurosurgery National Clinical Research Center for Aging and Medicine Huashan Hospital Shanghai Medical College Fudan University Shanghai 200032 China State Key laboratory of Medical Neurobiology School of Basic Medical Sciences Fudan University Shanghai 200032 China Shanghai Key laboratory of Clinical Geriatric Medicine Research Center on Aging and Medicine Shanghai Medical College Fudan University Shanghai 200032 China

Micro RNA-365(mi R-365) is upregulated in the ischemic brain and is involved in oxidative damage in the diabetic rat. However, it is unclear whether mi R-365 regulates oxidative stress(OS)-mediated neuronal damage after ischemia. Here, we used a transient middle cerebral artery occlusion model in rats and the hydrogen peroxide-induced OS model in primary cultured neurons to assess the roles of mi R-365 in neuronal damage. We found that mi R-365 exacerbated ischemic brain injury and OS-induced neuronal damage and was associated with a reduced expression of OXR1(Oxidation Resistance 1). In contrast, mi R-365 antagomir alleviated both the brain injury and OXR1 reduction. Luciferase assays indicated that mi R-365 inhibited OXR1 expression by directly targeting the 30-untranslated region of Oxr1. Furthermore, knockdown of OXR1 abolished the neuroprotective and antioxidant effects of the mi R-365 antagomir. Our results suggest that mi R-365 upregulationincreases oxidative injury by inhibiting OXR1 expression,while its downregulation protects neurons from oxidative death by enhancing OXR1-mediated antioxidant signals.

关键词： MicroRNA Ischemic stroke Neuronal damage Oxidative stress Neuroprotection

Numerical Investigation of the Superimposed Effects on Stator Wake Oscillation in an Axial-radial Combined Compressor

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Journal of Thermal Science 2014年第1期23卷 22-35页

作者： ZHAO Ben YANG Ce HU Liangjun ZHOU Mi ZHANG Jizhong School of Mechanical Engineering Beijing Institute of Technology basic Subject Department Bohai Shipbuilding Vocational College Science and Technology on Diesel Engine Turbocharging laboratory China North Engine Research Institute

The superimposed influences of the blade rows in a multistage compressor are important because different matches of upstream and downstream blades can result in significant differences in the stator wake oscillation. Numerical investigation of the axial stator wake oscillation, which is affected upstream by the axial rotor and downstream by the radial rotor, was performed in an axial-radial combined compressor. Many configurations with different blade numbers and locations, which influence axial stator wake oscillation were investigated. When rotors have equal blade numbers, the axial stator wake oscillates periodically versus time within time T(moving blade passing 1/3 revolution). In contrast, stator wake oscillates irregularly within T when rotors have different blade numbers. A model-split subtraction method is presented in order to separate the influences of the individual blade rows on the wake oscillation of the axial stator. Analysis from the rotor-stator configuration showed that the unsteady flow angle fluctuation response is caused by the upstream rotor. For the rotor-stator-rotor configuration, the unsteady flow angle fluctuations are influenced by upand downstream blade rows. With the model-split subtraction method, the upand downstream influences on the flow angle fluctuation could be clearly separated and quantified. Low amplitudes could be observed when the influences from upand downstream moving rows were superimposed with the "positive peaknegative peak" type wave. Clocking investigations were carried out to change the relative superimposed phase of influences from the surrounding blade rows in order to modulate the amplitudes of the axial stator wake oscillation. However, the amplitudes did not reach the maximum when they were superimposed with "positive peak-positive peak" type wave due to the impact of the interaction between the two moving blade rows.

关键词： axial-radial combined compressor wake oscillation superimposed effect absolute flow angle clocking