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西藏交通警察道路执法工作的风险与防范
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作者 尼桑拉 《时代汽车》 2024年第12期184-186,共3页
西藏自治区自然、地理与气候环境复杂且特殊,道路交通环境相对恶劣,这导致当地交通警察道路执法工作面临诸多风险,包括警员人身安全和执法效能等风险。对此,文章对西藏交通警察道路执法工作风险进行了调查分析,从地区环境、警员安全意... 西藏自治区自然、地理与气候环境复杂且特殊,道路交通环境相对恶劣,这导致当地交通警察道路执法工作面临诸多风险,包括警员人身安全和执法效能等风险。对此,文章对西藏交通警察道路执法工作风险进行了调查分析,从地区环境、警员安全意识与技能、执法装备、社会宣传和教育等角度探讨了相关风险的成因,针对性相关风险成因,提出从优化警力配置与道路信息推送、加强警员培训、完善警务装备、加强法治化宣传教育等工作来消除相关风险,以期保障警员安全并改善西藏交通环境。 展开更多
关键词 西 harsh which leads to the local trac POLICE road LAW ENFORCEMENT work to face a lot of RISKS including the personal SAFETY of the POLICE ocers and LAW ENFORCEMENT eectiveness and other risks. In this regard this paper investigates and analyzes the RISKS of road LAW ENFORCEMENT work of the Xi Zang trac POLICE discusses the causes of the RISKS from the perspectives of regional environment POLICE SAFETY awareness and skills LAW ENFORCEMENT equipment social publicity and education and proposes to eliminate the RISKS by optimizing the allocation of POLICE force and road information delivery strengthening POLICE training improving POLICE equipment and strengthening the rule of LAW publicity and education etc. so as to guarantee the SAFETY of POLICE ocers and improve the eectiveness of LAW ENFORCEMENT so as to ensure the SAFETY of POLICE ocers and improve the trac environment in Xi Zang.
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Everything Is Timelessly Connected: Metaphysics, Physics, Consciousness, Spacetime Travel, DNA, and the Dry Bones Prophesy (Ezekiel Ch. 37)
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作者 Yosef Joseph Segman 《Natural Science》 CAS 2022年第7期265-288,共24页
This paper provides a perception that all things are connected. Starting with the perception of Metaphysics and how matter exists out of total void, complementary matter, or dark matter, the incompleteness of Einstein... This paper provides a perception that all things are connected. Starting with the perception of Metaphysics and how matter exists out of total void, complementary matter, or dark matter, the incompleteness of Einstein relativistic theory. Multi spacetime universes and the jump drive for jumping within and between spacetime universes. Warp drive for space travel. DNA as sequence of momentary frequencies and how it related to Ezekiel’s dry bones prophecy. The outcome of neural patterns as cords of consciousness, consciousness as the collection of all cords of consciousness and the lack of uniqueness of individual consciousness. Finally, all things are cords of consciousness. 展开更多
关键词 VOID COMPLEMENTARY Void Complementary MATTER Complementary Matter METAPHYSICS consciousness Neural Patterns Time Timeless Synchronization Order Disorder Universe Group Representation Jump Drive Warp Drive Frequency Phase Fourier Transform Schrödinger Representation Gabor Transform DNA Hologram Virtual<sup>2</sup>
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Analysis of Commuting Modal Shift in Consideration of Social Interaction of Consciousness for Environment
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作者 Masashi Okushima 《Journal of Traffic and Transportation Engineering》 2024年第2期63-80,共18页
It is the matter for achievement of the low carbon transport system that the excessive use of private vehicles can be controlled appropriately.Not only improvement of service level of modes except private vehicle,but ... It is the matter for achievement of the low carbon transport system that the excessive use of private vehicles can be controlled appropriately.Not only improvement of service level of modes except private vehicle,but also consciousness for environmental problem of individual trip maker is important for eco-commuting promotion.On the other hand,consciousness for environment would be changed by influence of other person.Accordingly,it is aimed in the study that the structure of decision-making process for modal shift to the eco-commuting mode in the local city is described considering environmental consciousness and social interaction.For the purpose,the consciousness for the environment problem and the travel behavior of the commuter at the suburban area in the local city are investigated by the questionnaire survey.The covariance structure about the eco-consciousness is analyzed with the database of the questionnaire survey by structural equation modeling.As the result,it can be confirmed with the structural equation model that the individual environmental consciousness is strongly related with the intention of self-sacrifice and is influenced with the local interaction of the individual connections.On the other hand,the intention of modal shift for the commuting mode is analyzed with the database of the questionnaire survey.It can be found out that the environmental consciousness is not statistically significant for commuting mode choice with the present poor level of service of public transport.However,the intention of self-sacrifice for the prevention of the global warming is statistically confirmed as the factor of modal shift with the operation of eco-commuting bus service with the RP/SP integrated estimation method.As the result,the multi-agent simulation system with social interaction model for eco consciousness is developed to measure the effect of the eco-commuting promotion.For the purpose,the carbon dioxide emission is estimated based on traffic demand and road network condition in the traffic environment model.On the other hand,the relation between agents is defined based on the small world network.The proposed multi-agent simulation is applied to measure the effect of the eco-commuting promotion such as improvement of level of service on the public transport or education of eco-consciousness.The effect of the promotion plan can be observed with the proposed multi-agent system.Finally,it can be concluded that the proposed multi-agent simulation with social interaction for eco-consciousness is useful for planning of eco-commuting promotion. 展开更多
关键词 Greenhouse gas emission modal shift structural equation model RP/SP combined estimation multi-agent simulation local interaction small world network consciousness for environment commuting shuttle bus local city
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The Axiology of Consciousness in Mocombeian Consciousness Field Theory
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作者 Paul C.Mocombe 《Philosophy Study》 2024年第4期168-185,共18页
This work explores the axiology of consciousness in Mocombe’s consciousness field in the material world.The paper critically assesses Mocombe’s consciousness field theory(CFT)within the larger body of contemporary o... This work explores the axiology of consciousness in Mocombe’s consciousness field in the material world.The paper critically assesses Mocombe’s consciousness field theory(CFT)within the larger body of contemporary ontological debates regarding the nature,origin,and constitution of consciousness in the universe.The work goes on to highlight the manifestation of Mocombe’s consciousness field in the material resource framework that is the earth,and the nature and origins of ethics and values. 展开更多
关键词 structuration theory phenomenological structuralism structure/agency mythopraxis quantum mechanics social class language game Haitian epistemology Haitian/Vilokan idealism consciousness field theory
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Numerical investigation on detonation cell evolution in a channel with area-changing cross section 被引量:1
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作者 DENG Bo,HU ZongMin,TENG HongHui & JIANG ZongLin Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2007年第6期797-808,共12页
The two-dimensional cellular detonation propagating in a channel with area-changing cross section was numerically simulated with the dispersion-controlled dissipative scheme and a detailed chemical reaction model. Eff... The two-dimensional cellular detonation propagating in a channel with area-changing cross section was numerically simulated with the dispersion-controlled dissipative scheme and a detailed chemical reaction model. Effects of the flow ex-pansion and compression on the cellular detonation cell were investigated to illus-trate the mechanism of the transverse wave development and the cellular detona-tion cell evolution. By examining gas composition variations behind the leading shock,the chemical reaction rate,the reaction zone length,and thermodynamic parameters,two kinds of the abnormal detonation waves were identified. To explore their development mechanism,chemical reactions,reflected shocks and rarefac-tion waves were discussed,which interact with each other and affect the cellular detonation in different ways. 展开更多
关键词 DETONATION cells transverse waves detailed CHEMICAL REACTION model numerical simulation The two-dimensional CELLULAR DETONATION propagating in a channel with area- changing cross section was numerically simulated with the dispersion-controlled dissipative scheme and a detailed CHEMICAL REACTION model. Effects of the flow expansion and compression on the CELLULAR DETONATION CELL were investigated to illustrate the mechanism of the transverse wave development and the CELLULAR DETONATION CELL evolution. By examining gas composition variations behind the leading shock the CHEMICAL REACTION rate the REACTION zone length and thermodynamic parameters two kinds of the abnormal DETONATION WAVES were identified. To explore their development mechanism CHEMICAL reactions reflected shocks and rarefaction WAVES were discussed which interact with each other and affect the CELLULAR DETONATION in different ways.
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Research on Leading Edge Erosion and Aerodynamic Characteristics of Wind Turbine Blade Airfoil
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作者 Xin Guan Yuqi Xie +2 位作者 Shuaijie Wang Mingyang Li Shiwei Wu 《Fluid Dynamics & Materials Processing》 EI 2024年第9期2045-2058,共14页
The effects of the erosion present on the leading edge of a wind turbine airfoil(DU 96-W-180)on its aerodynamic performances have been investigated numerically in the framework of a SST k–ωturbulence model based on ... The effects of the erosion present on the leading edge of a wind turbine airfoil(DU 96-W-180)on its aerodynamic performances have been investigated numerically in the framework of a SST k–ωturbulence model based on the Reynolds Averaged Navier-Stokes equations(RANS).The results indicate that when sand-induced holes and small pits are involved as leading edge wear features,they have a minimal influence on the lift and drag coefficients of the airfoil.However,if delamination occurs in the same airfoil region,it significantly impacts the lift and resistance characteristics of the airfoil.Specifically,as the angle of attack grows,there is a significant decrease in the lift coefficient accompanied by a sharp increase in the drag coefficient.As wear intensifies,these effects gradually increase.Moreover,the leading edge wear can exacerbate flow separation near the trailing edge suction surface of the airfoil and cause forward displacement of the separation point. 展开更多
关键词 Wind energy wind turbine EROSION AIRFOIL leading edge erosion characteristics aerodynamic performance numerical simulation
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Implications of rare neurological disorders and perceptual errors in natural and synthetic consciousness
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作者 Allen D. Allen 《World Journal of Neuroscience》 2013年第4期234-239,共6页
Recent theories on natural and synthetic consciousness overlook the geometric structure necessary for awareness of 3-dimensional space, as strikingly illustrated by left-neglect disorder. Furthermore, awareness of 3-d... Recent theories on natural and synthetic consciousness overlook the geometric structure necessary for awareness of 3-dimensional space, as strikingly illustrated by left-neglect disorder. Furthermore, awareness of 3-dimensional space entails some surprisingly tenacious optical illusions, as demonstrated by an experiment in the text. Awareness of linear time is also crucial and complex. As a consequence, synthetic consciousness cannot be realized by simply intercomnecting a large number of electronic circuits constructed from ordinary chips and transistors. Since consciousness is a subjective experience, there is no sufficient condition for consciousness that can be experimentally confirmed. The most we can hope for is agreement on the necessary conditions for consciousness. Toward that end, this paper reviews some relevant clinical phenomena. 展开更多
关键词 Human Brain consciousness Artificial consciousness Clinical NEUROLOGY Fractal Cortex Perceptual ERRORS NEUROLOGICAL Time EMOTIONAL PRECOGNITION Artificial Sociopath Quantum Mechanical Measurement
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Neuroimaging characterization of recovery of impaired consciousness in patients with disorders of consciousness 被引量:5
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作者 Sung Ho Jang Young Hyeon Kwon 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第7期1202-1207,共6页
Elucidation of critical brain areas or structures that are responsible for recovery of impaired consciousness in patients with disorders of consciousness is important because it can provide information that is useful ... Elucidation of critical brain areas or structures that are responsible for recovery of impaired consciousness in patients with disorders of consciousness is important because it can provide information that is useful when developing therapeutic strategies for neurorehabilitation or neurointervention in patients with disorders of consciousness.In this review,studies that have demonstrated brain changes during recovery of impaired consciousness were reviewed.These studies used positron emission tomography,electroencephalography/transcranial magnetic stimulation,diffusion tensor tractography,and diffusion tensor tractography/electroencephalography.The majority of these studies reported on the importance of supratentorial areas or structures in the recovery of impaired consciousness.The important brain areas or structures that were identified were the prefrontal cortex,basal forebrain,anterior cingulate cortex,and parietal cortex.These results have a clinically important implication that these brain areas or structures can be target areas for neurorehabilitation or neurointervention in patients with disorders of consciousness.However,most of studies were case reports;therefore,further original studies involving larger numbers of patients with disorders of consciousness are warranted.In addition,more detailed information on the brain areas or structures that are relevant to the recovery of impaired consciousness is needed. 展开更多
关键词 consciousness VEGETATIVE STATE MINIMALLY conscious STATE ascending RETICULAR activating system diffusion tensor imaging NEUROIMAGING neural regeneration review
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Measuring consciousness in coma and related states 被引量:11
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作者 Carol Di Perri Aurore Thibaut +3 位作者 Lizette Heine Andrea Soddu Athena Demertzi Steven Laureys 《World Journal of Radiology》 CAS 2014年第8期589-597,共9页
Consciousness is a prismatic and ambiguous concept that still eludes any universal definition. Severe acquired brain injuries resulting in a disorder of con-sciousness(DOC) provide a model from which insights into con... Consciousness is a prismatic and ambiguous concept that still eludes any universal definition. Severe acquired brain injuries resulting in a disorder of con-sciousness(DOC) provide a model from which insights into consciousness can be drawn. A number of recent studies highlight the difficulty in making a diagnosis in patients with DOC based only on behavioral assessments. Here we aim to provide an overview of how neuroimaging techniques can help assess patients with DOC. Such techniques are expected to facilitate a more accurate understanding of brain function in states of unconsciousness and to improve the evaluation of thepatient's cognitive abilities by providing both diagnostic and prognostic indicators. 展开更多
关键词 Disorders of consciousness Neuroimaging MAGNETIC resonance imaging Transcranial MAGNETIC stimulation/electroencephalography Minimally conscious STATE Vegetative state/unresponsive WAKEFULNESS syndrome
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甲基紫电极EDTA电位滴定法测定微量铅 被引量:4
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作者 何智娟 董学芝 胡卫平 《冶金分析》 CAS CSCD 北大核心 2005年第2期6-9,共4页
提出了在氨三乙酸(NTA,活化剂)存在下,以Mn 催化高碘酸钾氧化甲基紫的反应指示滴定终点,以自制的甲基紫选择性电极为指示电极,Mn 为滴定剂,EDTA为阻抑剂,催化电位滴定法测定微量铅的新方法。实验表明,选择1 0×10-3mol/L甲基紫溶液... 提出了在氨三乙酸(NTA,活化剂)存在下,以Mn 催化高碘酸钾氧化甲基紫的反应指示滴定终点,以自制的甲基紫选择性电极为指示电极,Mn 为滴定剂,EDTA为阻抑剂,催化电位滴定法测定微量铅的新方法。实验表明,选择1 0×10-3mol/L甲基紫溶液、5 0×10-3mol/LKIO4溶液和5 0×10-3mol/LNTA溶液用量分别为0 50,1 00,0 50mL,滴定速度1 7mL/min,终点灵敏,准确度高。将该方法用于蓄电池废水中铅含量测定,结果与火焰原子吸收光谱法一致,样品平均回收率为99 1%,RSD为1 47%。 展开更多
关键词 EDTA Mn() () KIO4 NTA min
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The Claimed Revolution to Understand Consciousness:Information Plays the Driving/Essential Role for the Structuration and Behavior of the Living Organisms
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作者 Florin Gaiseanu 《Philosophy Study》 2024年第4期153-167,共15页
A prestigious conference claimed recently a revolution in neuroscience to understand consciousness.In this paper it is shown that this revolution already came,revealing the determinant role of information for human an... A prestigious conference claimed recently a revolution in neuroscience to understand consciousness.In this paper it is shown that this revolution already came,revealing the determinant role of information for human and living structures,both for their structuration and behavior,explaining consciousness at human as the result of the activity of the Informational System of Human and Living Structures.For this,it is emphasized and discussed the informational structure of the eukaryotic cell,the basic/representative composing unit of the multicellular body of human,animals,and plants,showing that the composition and functions of the informational system are basically similar with that of human.To reveal the driving role of informational mechanisms in human and subhuman organisms,it is introduced the concept of matter-related information,showing that information can be hidden/“embodied”or released/“disembodied”in or from the elemental micro/macro components of the body,during the multiple chain/cascade interactions including transduction processes.It is shown that such interactions are initiated from two main categories of informational sources:implicit(genetic)and explicit(external/internal)sources,the first category leading to structuration of the body and the second the reactive behavior.Consciousness in human and subhuman organisms,expressed by two corresponding informational relations,is the result of the release of information by the mind,acting as an informational operator/device,the development degree of mind and consciousness depending on the complexity degree and adaptation.An analogy of this Informational Model of Human and Living Structures(IMHLS)with the ancient model of chakras is highlighted,showing that these models support each other,applied with beneficial effects in Reiki technique and music-based cognitive multi-task therapy for neuro-rehabilitation. 展开更多
关键词 matter-related information embodiment/disembodiment info-transduction decision info-operator mind/consciousness
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用LAHET和MCNP程序研究散裂中子靶的中子学性能 被引量:1
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作者 杨永伟 李浩泉 经荥清 《原子能科学技术》 EI CAS CSCD 北大核心 2005年第3期205-208,共4页
利用LAHET和MCNP程序对ADS散裂中子靶进行模拟计算。因靶的基本物理性质随束流和靶形状的变化而改变,所以首先评估了源强和靶的几何形状对靶性质的可能影响,然后计算长1.2m、直径为0.6m的圆柱形液态铅靶在1GeV质子轰击下,靶内中子的产... 利用LAHET和MCNP程序对ADS散裂中子靶进行模拟计算。因靶的基本物理性质随束流和靶形状的变化而改变,所以首先评估了源强和靶的几何形状对靶性质的可能影响,然后计算长1.2m、直径为0.6m的圆柱形液态铅靶在1GeV质子轰击下,靶内中子的产生和泄漏及能量的沉积等。与文献数据、实验数据进行了比较,符合良好。计算结果还表明:源强和几何的选择对中子产生和泄漏可产生较大影响;用液态铅作散裂靶时,中子产额和泄漏额较高,且泄漏能谱在可利用范围内,但能量沉积在靶中的分布极不均匀,这可能给传热带来问题。 展开更多
关键词 MCNP ADS
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Leading Pattern of Spring Drought Variability over East Asia and Associated Drivers
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作者 赵庆红 杨崧 +1 位作者 田红瑛 邓开强 《Journal of Tropical Meteorology》 SCIE 2024年第1期1-10,共10页
Drought events have become more frequent and intense over East Asia in recent decades,leading to huge socioeconomic impacts.Although the droughts have been studied extensively by cases or for individual regions,their ... Drought events have become more frequent and intense over East Asia in recent decades,leading to huge socioeconomic impacts.Although the droughts have been studied extensively by cases or for individual regions,their leading variability and associated causes remain unclear.Based on the Standardized Precipitation Evapotranspiration Index(SPEI)and ERA5 reanalysis product from 1979 to 2020,this study evealuates the severity of spring droughts in East Asia and investigates their variations and associated drivers.The results indicate that North China and Mongolia have experienced remarkable trends toward dryness during spring in recent decades,while southwestern China has witnessed an opposite trend toward wetness.The first Empirical Orthogonal Function mode of SPEI variability reveals a similar seesawing pattern,with more severe dryness in northwestern China,Mongolia,North China,South Korea,and Japan but increased wetness in Southwestern China and southeast Asia.Further investigation reveals that the anomalously dry(wet)surface in North(Southwestern)China is significantly associated with anomalously high(low)temperature,less(more)precipitation,and reduced(increased)soil moisture during the previous winter and early spring,regulated by an anomalous anticyclone(cyclone)and thus reduced(increased)water vapor convergence.The spring dry-wet pattern in East Asia is also linked to cold sea surface temperature anomalies in the central-eastern Pacific.The findings of this study have important implications for improving the prediction of spring drought events in East Asia. 展开更多
关键词 DROUGHT leading pattern East Asia spring DRIVERS
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God Is a Porcupine—Brain, Consciousness and Spacetime Physics
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作者 Walter J. Christensen Jr. 《Journal of Modern Physics》 2017年第8期1294-1318,共25页
Whereas the human body requires a vast numbers of atoms to maintain its intricate anatomical functions, we assert that the human brain requires “something extra” to carry out its higher mental and emotional function... Whereas the human body requires a vast numbers of atoms to maintain its intricate anatomical functions, we assert that the human brain requires “something extra” to carry out its higher mental and emotional functions. Recently, neuroscientists are beginning to suspect brain cells are not fast enough, or intricate enough, to correlate complex spatiotemporal information into cognitive understanding. They conclude that spacetime fields may be necessary to assist the brain during neurological processing—in much the same way magnetic and electric fields are essential for the propagation of light. This “something extra,” we argue, is spacetime itself—where structures in the brain, called facilitators (somewhat like Descartes pineal gland), have evolved biologically in such a way, so as to be able to store and retrieve spacetime quanta for the formation and generation of consciousness and memory. In this way, cognition is not a thing complete. Rather it is emergent, and accumulates as discretized spacetime quanta in the brain so rapidly, we perceive our own awareness to be continuous, events spontaneous. In this paper, we consider spacetime to be a field (like all quantum fields), which can be excited into quanta particles called gravitons. We then apply this quanta excitation to help explain the brain’s cognitive processes. If the brain has indeed evolved to interact with discretized spacetime, then with the advent of improved functional imaging equipment, we might be able to map detailed correlations between neural processes, conscious experience and spacetime. In so doing, it might be possible to learn more about the fundamental workings of spacetime itself. 展开更多
关键词 Neuroscience consciousness Memory BRAIN Communication SPACETIME SPACETIME Quanta GRAVITONS Time Quanta General Relativity Relativized Quantum PHYSICS (RQP)
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苯并(a)芘和铅对小鼠大脑神经元损伤的研究 被引量:2
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作者 涂白杰 胡雪原 韩令力 《环境与职业医学》 CAS 北大核心 2005年第2期127-129,共3页
[目的]研究苯并(a)芘(BaP)、铅单独及其联合作用对小鼠大脑神经元DNA的损伤。[方法]将80只昆明种小鼠随机分为10组(每组8只) ,即空白对照组、溶剂对照组、低浓度铅染毒组、高浓度铅染毒组、低剂量BaP染毒组、高剂量BaP染毒组、低浓度铅... [目的]研究苯并(a)芘(BaP)、铅单独及其联合作用对小鼠大脑神经元DNA的损伤。[方法]将80只昆明种小鼠随机分为10组(每组8只) ,即空白对照组、溶剂对照组、低浓度铅染毒组、高浓度铅染毒组、低剂量BaP染毒组、高剂量BaP染毒组、低浓度铅+低剂量BaP联合染毒组、低浓度铅+高剂量BaP联合染毒组、高浓度铅+低剂量BaP联合染毒组及高浓度铅+高剂量BaP联合染毒组。空白对照组不作处理,溶剂对照组用等容量植物油平行处理;低、高浓度的铅染毒分别为5 .4、5 4mg/L的醋酸铅饮水染毒;低、高剂量BaP染毒分别为0 .5、5mg/kg的BaP植物油溶液,每周4次腹腔注射,联合染毒组接受两种处理。染毒8周后取各组小鼠脑组织制作细胞悬液,单细胞凝胶电泳法检测小鼠大脑神经元DNA的损伤。[结果]①单独染毒:BaP 5mg/kg染毒组小鼠大脑神经元DNA的损伤程度高于对照组(P <0 .0 5 )。②联合染毒:5 .4mg/L的醋酸铅+ 0 .5mg/kg的BaP染毒组(P <0 .0 5 ) ;5 .4mg/L的醋酸铅+ 5mg/kg的BaP染毒组(P <0 0 1) ;5 4mg/L的醋酸铅+ 0 .5mg/kg的BaP染毒组(P <0 .0 1) ;5 4mg/L的醋酸铅+ 5mg/kg的BaP染毒组(P <0 .0 1)小鼠大脑神经元DNA的损伤程度显著高于对照组。[结论]高剂量BaP连续8周暴露可损伤小鼠大脑神经元; 展开更多
关键词 (A) BaP DNA
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锌对染铅大鼠海马神经元亚细胞结构及突触参数的保护作用
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作者 李积胜 闫蓓 +2 位作者 王延坤 王大宁 陈俊 《毒理学杂志》 CAS CSCD 北大核心 2005年第2期96-98,共3页
目的 探讨铅对海马CA1 区亚细胞结构的损伤及锌的拮抗作用。方法 给Wistar大鼠饮用6 15mmol L醋酸铅(染铅组)及含3 10mmol L硫酸锌的上述溶液(铅锌组) ,喂养40d ,采用原子吸收法检测各组动物血铅和海马铅含量;电镜下观察各组动物海马... 目的 探讨铅对海马CA1 区亚细胞结构的损伤及锌的拮抗作用。方法 给Wistar大鼠饮用6 15mmol L醋酸铅(染铅组)及含3 10mmol L硫酸锌的上述溶液(铅锌组) ,喂养40d ,采用原子吸收法检测各组动物血铅和海马铅含量;电镜下观察各组动物海马CA1 区神经元及其突触的亚细胞结构变化;对照组饮用蒸馏水。每组10只动物。结果 与对照组和铅锌组相比,染铅组大鼠血铅和海马铅含量明显升高(P <0 0 5 ) ;染铅大鼠海马CA1 区神经元内的含粗面内质网、线粒体减少,有些已发生空泡化;染铅大鼠海马CA1 区放射层的含5 0个以上突触囊泡的突触结构明显减少(P <0 0 1)。而含10个以下囊泡的突触结构则明显增加(P <0 0 1)。突触前后膜面积均明显减小(P <0 0 1)。但铅锌组和对照组之间无明显差别。结论 锌对铅引起的大鼠海马CA1 区神经元亚细胞结构变化有拮抗作用。 展开更多
关键词 CA1 Wistar mol/L 线
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铅对小鼠学习记忆功能及海马区c-fos表达的影响 被引量:4
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作者 文涛 孙黎光 +3 位作者 宗志宏 高明奇 邢伟 刘素媛 《毒理学杂志》 CAS CSCD 北大核心 2005年第1期21-23,共3页
目的 观察铅对小鼠海马区c- fos表达及学习记忆功能的影响 ,并探讨二者的关系。方法 小鼠随机分为3个实验组和 1个对照组 ,每组 10只染铅剂量分别为 2 4、4 8和 9 6mmol L ,用跳台学习试验测试小鼠学习记忆能力 ;用RT PCR法观察各组... 目的 观察铅对小鼠海马区c- fos表达及学习记忆功能的影响 ,并探讨二者的关系。方法 小鼠随机分为3个实验组和 1个对照组 ,每组 10只染铅剂量分别为 2 4、4 8和 9 6mmol L ,用跳台学习试验测试小鼠学习记忆能力 ;用RT PCR法观察各组小鼠海马区c fosmRNA的表达状况。结果  (1) 3个染铅组小鼠跳台学习成绩显著低于对照组 (P <0 . 0 1) ;(2 ) 3个染铅组小鼠c- fosmRNA水平均明显降低 ,以对照组的值为 10 0 ,则低剂量组为 75 . 0 4± 4 .75 ,中剂量组为5 8. 3 5± 5 . 2 9,高剂量组为 42. 66± 6 .3 0 ,与对照组相比 ,P <0 .0 1。高剂量组、中剂量组与低剂量组比较 ,P <0 . 0 1。结论 慢性铅染毒间接阻碍了c- fox基因的反应性表达 ,c- fos基因表达水平的下降可能与铅致小鼠学习记忆功能损害有关。 展开更多
关键词 C-FOS RT-PCR mRNA mol/L x
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Informational Model of Consciousness: From Philosophic Concepts to an Information Science of Consciousness 被引量:1
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作者 Florin Gaiseanu 《Journal of Philosophy Study》 2019年第4期181-196,共16页
On the long and well-worn road of many, but justifiable attempts of human to discover his origin, his trajectory as a species, and a suitable understanding consciousness, his system allowing the connection to the envi... On the long and well-worn road of many, but justifiable attempts of human to discover his origin, his trajectory as a species, and a suitable understanding consciousness, his system allowing the connection to the environment and to his own organism, the concepts and models of philosophy enunciated or experienced by millennia, meet today with modern science concepts of physics and of science of information. Based on recent discoveries of quantum physics and astrophysics, revealing a new understanding of our environment and starting from some philosophical concepts on information of matter and of living structures, this work discusses the dynamics of information within the frame of the Informational Model of Consciousness as an informational system of the human body, connected both to the environment and to the body itself, to control the adaptation for survival. It is shown that consciousness is actually an informational projection in the mind of seven informational subsystems, three of which forming the operative system of consciousness for the short-term adaptation, and other three forming the programmed operating system, dedicated to the maintenance of body and to the long-term survival of species, showing various inputs and outputs of information. The seventh subsystem is the information pole, connecting the organism with the external information, especially related to the extra-sensorial properties of the mind, the human body appearing as a bipolar info-matter structure, managed by the brain. The received information is progressively integrated into the informational system of the organism, which absorbs and emanates information as a reactive system for adaptation, able to operate both with matter-related (codified) and non-matter related (virtual) information. As both connections with external and internal environment (body itself) can be described in terms of information, this model opens the gate to investigate consciousness by means of the tools of the information science, offering also answers to the philosophic “mind-body” problem and to the “hard” problem and showing correspondences with some ancient philosophies. 展开更多
关键词 consciousness informational model of consciousness dynamics of INFORMATION MATTER integration of INFORMATION INFORMATION SCIENCE PHILOSOPHICAL concepts matter-related INFORMATION information-assisted LIVING
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镉、铅及其复合污染对辣椒生理生化特性的影响 被引量:78
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作者 王林 史衍玺 《山东农业大学学报(自然科学版)》 CSCD 北大核心 2005年第1期107-112,118,共7页
通过水培试验,研究了重金属镉(Cd)、铅(Pb)的单一及复合污染对辣椒生理生化特性的影响。结果表明,在Cd、Pb单一及复合污染条件下,随着Cd、Pb浓度的升高,辣椒生长受到明显抑制,生物量、株高明显下降,硝酸还原酶(NR)活性、根系活力、叶绿... 通过水培试验,研究了重金属镉(Cd)、铅(Pb)的单一及复合污染对辣椒生理生化特性的影响。结果表明,在Cd、Pb单一及复合污染条件下,随着Cd、Pb浓度的升高,辣椒生长受到明显抑制,生物量、株高明显下降,硝酸还原酶(NR)活性、根系活力、叶绿素含量以及叶绿素a/b显著下降,叶片细胞膜透性(CMP)显著升高;其中,在Cd、Pb单一污染条件下,硝酸还原酶(NR)活性、根系活力、叶绿素含量、叶片细胞膜透性(CMP)分别与Cd、Pb浓度呈显著或极显著的线性相关关系,Cd对辣椒的毒害作用强于Pb;Cd、Pb复合污染对辣椒NR活性的影响始终比单一污染强,而对CMP、根系活力、叶绿素含量的影响则比较复杂,先是略弱于Cd单一污染,而后随着浓度升高,又强于Cd单一污染,始终强于Pb单一污染。 展开更多
关键词 绿 绿A/B 线 (Cd) NR Pb CMP
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Advances InInterdisciplinary Researches to Construct a Theory of Consciousness
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作者 Pierre R. Blanquet 《Journal of Behavioral and Brain Science》 2011年第4期242-261,共20页
The interdisciplinary researches for a scientific explanation of consciousness constitute one of the most exciting challenges of contemporary science. However, although considerable progress has been made in the neuro... The interdisciplinary researches for a scientific explanation of consciousness constitute one of the most exciting challenges of contemporary science. However, although considerable progress has been made in the neurophysiology of states of consciousness such as sleep/waking cycles, investigation of subjective and objective nature of consciousness contents raises still serious difficulties. Based on a wide range of analysis and experimental studies, approaches to modeling consciousness actually focus on both philosophical, non-neural and neural approaches. Philosophical and non-neural approaches include the naturalistic dualism model of Chalmers, the multiple draft cognitive model of Dennett, the phenomenological theory of Varela and Maturana, and the physics-based hypothesis of Hameroff and Penrose. The neurobiological approaches include the neurodynamical model of Freeman, the visual system-based theories of Lamme, Zeki, Milner and Goodale, the phenomenal/access hypothesis of Block, the emotive somatosensory theory of Damasio, the synchronized cortical model of Llinas and of Crick and Koch, and the global neurophysiological brain model of Changeux and Edelman. There have been also many efforts in recent years to study the artificial intelligence systems such as neurorobots and some supercomputer programs, based on laws of computational machines and on laws of processing capabilities of biological systems. This approach has proven to be a fertile physical enterprise to check some hypothesis about the functioning of brain architecture. Until now, however, no machine has been capable of reproducing an artificial consciousness. 展开更多
关键词 Models of consciousness Third and First-Person Data/ QUALIA NEURONAL WORKSPACE Thalamo-Cortical Neurons Artificial Intelligence
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