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Application of the three-dimensional telegraph equation to cosmic-ray transport

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Research in Astronomy and Astrophysics 2016年第10期16卷 107-115页

作者： Robert C. Tautz ian Lerche Zentrum fur Astronomie und Astrophysik Technische Universitat Berlin HardenbergstraBe 36 D-10623 Berlin Germany Institut fur Geowissenschaften Naturwissenschaftliche Fakultat Ⅲ Martin-Luther-Universitat Halle D-06099 HalleGermany

An analytical solution to the three-dimensional telegraph equation is presented. This equation has recently received some attention but so far the treatment has been one-dimensional. By using the structural similarity to the Klein-Gordon equation, the telegraph equation can be solved in closed form. Illustrative examples are used to discuss the qualitative differences from the diffusion solution. A comparison with a numerical test-particle simulation reveals that some features of an intensity profile can be better explained using the telegraph approach.

关键词： plasmas -- turbulence -- magnetic field -- diffusion -- solar wind

Semantics ■ scalability |=⊥?

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Journal of Zhejiang University-Science C(Computers and Electronics) 2012年第4期13卷 241-244页

作者： ian HORROCKS Department of Computer Science Oxford University

The Web Ontology Language (OWL) (Horrocks et al.,2003; W3C OWL Working Group,2009a)has been developed and standardised by the WorldWide Web Consortium (W3C).

关键词：语义Web 可扩展性 Web本体语言网络传播 OWL W3C 工作组标准化

OneGeology： from concept to reality

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Episodes 2008年第3期31卷 344-345页

作者： Jackson, ian British Geol Survey Nottingham NG12 5GG England

In the March 2007 edition of Episodes, an article described the origins of OneGeology and progress during its first 12 months. Since March 2007, the project has moved forward dramatically and in August 2008, at the 33... 详细信息

关键词：地质学实验研究项目计划科学家

Interactive antimicrobial and toxicity profiles of Pittosporum angustifolium Lodd. extracts with conventional antimicrobials

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Journal of Integrative Medicine 2019年第4期17卷 261-272页

作者： Baxter Blonk ian E. Cock School of Environment and Science Griffith University Nathan Queensland 4111 Australia Environmental Futures Research Institute Nathan Campus Griffith University Nathan Queensland 4111 Australia

Objective: Pittosporum angustifolium Lodd. is used to treat a variety of pathogenic diseases and inflamma-tion by Australian aborigines. Practitioners of complementary medicine frequently use herbal medicines concurrently with conventional antibiotics. There is a need to evaluate their effects in combination. Methods: The bacterial growth inhibitory activity of P. angustifolium leaf extracts was assessed against a panel of pathogenic triggers of some autoimmune diseases by standard disc diffusion and liquid dilution minimum inhibitory concentration (MIC) methods. Combinational effects between the extracts and con-ventional antimicrobials were classified using the sum of the fractional inhibitory concentration. Synergistic interactions were further assessed across a range of ratios by isobologram analysis. The tox-icity of the individual samples and combinations was evaluated by Anemia lethality and 3-(4,5-dimethyl thiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) human dermal fibroblast cell viability assays. Results: P. angustifolium leaf extracts strongly inhibited the growth of several bacterial triggers of autoim-mune diseases. The methanolic, aqueous and ethyl acetate extracts were pwrticularly good inhibitors of Proteus mirabilis and Klebsiella pneumonia growth (MIC=26 and 57 ng/mL respectively). Some combinations of the extracts and conventional antibiotics signiflcantlv potentiated the combined inhibitory activity compared to the individual components. Of the 250 combinations studied, approximately 0.02% showed synergistic interactions, 49.6% were additive, 46.8% showed indifferent interactions and antago-nism occurred in only 0.02% of the combinations. Interestingly, all of the synergistic and antagonistic combinations contained tetracycline as their antibiotic component. Conclusion: P. angustifolium leaf extracts inhibit the growth of pathogenic triggers of some autoimmune diseases. Some extracts also potentiated the activity of co

关键词： Medicinal plants Conventional antimicrobials Synergy Interaction Toxicity

Aggregated morphodynamic modelling of tidal inlets and estuaries

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Water Science and Engineering 2020年第1期13卷 1-13页

作者： Zheng Bing Wang ian Townend Marcel Stive Faculty of Civil Engineering and Geosciences Delft University of TechnologyDelft 2600 GAthe Netherlands College of Harbor Coastal and Offshore EngineeringHohai UniversityNanjing 210098China Unit of Marine and Coastal Systems DeltaresDelft 2600 MHthe Netherlands School of Ocean and Earth Sciences University of SouthamptonSouthampton SO143ZHUK

Aggregation is used to represent the real world in a model at an appropriate level of *** used the convection-diffusion equation to examine the implications of aggregation progressing from a three-dimensional(3D)spatial description to a model representing a system as a single box that exchanges sediment with the adjacent *** highlight how all models depend on some forms of parametric closure,which need to be chosen to suit the scale of aggregation adopted in the *** such models are therefore aggregated and make use of some empirical relationships to deal with sub-scale *** such appropriately aggregated model,the model for the aggregated scale morphological interaction between tidal basin and adjacent coast(ASMITA),is examined in more detail and used to illustrate the insight that this level of aggregation can bring to a problem by considering how tidal inlets and estuaries are impacted by sea level rise.

关键词： Tidal inlet and estuary Morphodynamic modelling Aggregation Temporal and spatial scales Sea level rise Sediment transport

CFD simulation of wind and thermal-induced ventilation flow of a roof cavity

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Building Simulation 2022年第9期15卷 1611-1627页

作者： Wei Li Alison Subiantoro ian McClew Rajnish NSharma Department of Mechanical Engineering The University of AucklandBuilding 901Newmarket CampusAuckland 1142New Zealand Fletcher Steel Limited New Zealand

The hygrothermal performance of a ventilated roof cavity is greatly affected by the airflow passing through *** ventilation flow is mainly driven by the wind pressure difference between openings and the thermal-induced ***,the wind effect is not well understood as it is often neglected in previous *** present study investigates the properties of such airflows,including the flow pattern,flow regime,and flow rate,using a CFD *** target building is a large-span commercial building with a low-pitched *** study the wind-induced airflows,the onset atmospheric boundary layer wind flow was modelled,and the results were compared with the site-measured data recorded in the *** study the thermal-induced buoyancy effects,a roof cavity model found in the literature with experimental data was *** findings show that the flow pattern in the roof cavity varied with the airflow driven *** flow separation at the windward eave inlet of the thermally induced flows are more pronounced compared with those of the wind-induced ***,the wind-induced airflows can generate around two times more ventilation flow rate through the roof cavity compared to the thermal-induced *** findings indicate that wind-induced ventilation flows are the dominant factor of the roof cavity ventilation in a large-span,low-pitched building.

关键词： ventilated roof cavity CFD simulation atmospheric boundary layer thermal-induced buoyancy

Multi-Timescale Distributed Approach to Generalized-Nash-Equilibrium Seeking in Noncooperative Nonconvex Games

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Biologically inspired visual computing:the state of the art

自动化学报（英文版） 2024年第3期

作者： Banghua Huang Yang Liu Kit ian Kou Weihua Gui

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Frontiers of Computer Science 2021年第1期15卷 1-15页

作者： Wangli HAO ian Max ANDOLINA Wei WANG Zhaoxiang ZHANG Research Center for Research on Intelligent Perception and Computing Beijing 100190China National Laboratory of Pattern Recognition CASIABeijing 100190China CAS Center for Excellence in Brain Science and Intelligence Technology CASBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Neuroscience Shanghai 200031China Institute of Neuroscience Chinese Academy of SciencesShanghai 200031China

Visual information is highly advantageous for the evolutionary success of almost all *** information is likewise critical for many computing tasks,and visual computing has achieved tremendous successes in numerous applications over the last 60 years or *** that time,the development of visual computing has moved forwards with inspiration from biological mechanisms many *** particular,deep neural networks were inspired by the hierarchical processing mechanisms that exist in the visual cortex of primate brains(including ours),and have achieved huge breakthroughs in many domainspecific visual *** order to better understand biologically inspired visual computing,we will present a survey of the current work,and hope to offer some new avenues for rethinking visual computing and designing novel neural network architectures.

关键词： brain-inspired vision neural models intelligence novel neural networks

盐爪爪根际土壤产IAA菌株分离及促生特性分析

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草业学报 2024年第4期33卷 110-121页

作者：程鑫宇王继莲麦日艳古·亚生李明源喀什大学生命与地理科学学院新疆喀什844006 新疆帕米尔高原生物资源与生态自治区重点实验室新疆喀什844006

为丰富具有产吲哚-3-乙酸(IAA)功能的植物根际促生菌(PGPR),开发高效微生物菌肥,从南疆克孜勒苏柯尔克孜自治州耐盐植物盐爪爪根际土壤中分离产IAA的菌株。结合16S rDNA的限制性片段长度多态性PCR技术(PCR-RFLP)与16S rDNA序列分析进行... 详细信息

为丰富具有产吲哚-3-乙酸(IAA)功能的植物根际促生菌(PGPR),开发高效微生物菌肥,从南疆克孜勒苏柯尔克孜自治州耐盐植物盐爪爪根际土壤中分离产IAA的菌株。结合16S rDNA的限制性片段长度多态性PCR技术(PCR-RFLP)与16S rDNA序列分析进行菌种鉴定,分析高产IAA菌株对玉米和小麦种子发芽的影响,并通过盆栽试验验证其对盐碱胁迫下植株幼苗生长(株高、茎粗、地上干重等)的影响。结果表明,共筛选到67株PGPR菌株,其分泌IAA能力为16.65~71.63 mg·L^(-1),尤以PM14、PM18分泌量较高。PM14和PM18菌株同时兼具解磷、固氮能力。所有菌株分属6个菌属,以肠杆菌属占绝对优势。接种PM14和PM18均促进了玉米和小麦种子萌发,但菌液浓度高低对种子发芽的影响有显著差异(P<0.05)。接种处理增加了玉米株高、鲜重、地上干重、茎粗和根干重,分别增加了4.7%~37.2%、28.8%~94.5%、15.8%~157.9%、4.4%~35.5%和23.5%~82.4%,但叶绿素含量无显著变化。接种处理增加了小麦株高、茎粗、鲜重和地上干重,分别增加了9.5%~33.1%、13.0%~49.6%、57.4%~112.8%和71.4%~114.3%。除接种灭活的PM14导致小麦根干重与对照相比无显著差异,其他处理均有积极作用,提高了52.8%~69.0%,而所有处理对叶绿素含量均无显著影响。综上,本研究筛选的产IAA菌株提高了植株在盐碱胁迫下的抗性,对开发适用于盐碱地区的微生物菌肥有重要意义。

关键词：吲哚-3-乙酸植物根际促生菌盐碱胁迫促生微生物菌肥