Lattice Boltzmann simulations of lamellar and droplet phases

Lattice Boltzmann simulations are used to investigate spinodal decomposition in a two-dimensional binary fluid with equilibrium lamellar and droplet phases. We emphasise the importance of hydrodynamic flow to the phase separation kinetics. For mixtures slightly asymmetric in composition the fluid phase separates into bulk and lamellar phases with the lamellae forming distinctive spiral structures to minimise their elastic energy.Comment: 19 pages, 5 figure

Uncertainty in Knowledge Provenance

osed to address the problem about how to he validity and origin of information/knowledge on the web by rces and dependencies as oduced: Static, Dynamic, Uncertain, and Judgmental. In order to give a formal and explicit specification ncepts of KP, a static KP ontology is defined in this 1. telecommunication technologies that make owledge/information validity becomes a crucial ny des mo s and dependencies, as well as trust stru nswer include: Can this information be ts creator be trusted? What does it dep to be true? This proposed app to determine the val ncertain an

Design, Performance and Calibration of the CMS Forward Calorimeter Wedges

We report on the test beam results and calibration methods using charged particles of the CMS Forward Calorimeter (HF). The HF calorimeter covers a large pseudorapidity region (3\l |\eta| \le 5), and is essential for large number of physics channels with missing transverse energy. It is also expected to play a prominent role in the measurement of forward tagging jets in weak boson fusion channels. The HF calorimeter is based on steel absorber with embedded fused-silica-core optical fibers where Cherenkov radiation forms the basis of signal generation. Thus, the detector is essentially sensitive only to the electromagnetic shower core and is highly non-compensating (e/h \approx 5). This feature is also manifest in narrow and relatively short showers compared to similar calorimeters based on ionization. The choice of fused-silica optical fibers as active material is dictated by its exceptional radiation hardness. The electromagnetic energy resolution is dominated by photoelectron statistics and can be expressed in the customary form as a/\sqrt{E} + b. The stochastic term a is 198% and the constant term b is 9%. The hadronic energy resolution is largely determined by the fluctuations in the neutral pion production in showers, and when it is expressed as in the electromagnetic case, a = 280% and b = 11%

Investigation of open channel flow with unsubmerged rigid vegetation by the lattice Boltzmann method

YesAquatic vegetation can significantly affect flow structure, sediment transport, bed scour and water quality in rivers, lakes, reservoirs and open channels. In this study, the lattice Boltzmann method is applied for performing the two dimensional numerical simulation of the flow structure in a flume with rigid vegetation. A multi-relaxation time model is applied to improve the stability of the numerical scheme for flow with high Reynolds number. The vegetation induced drag force is added in lattice Boltzmann equation model with the algorithm of multi-relaxation time in order to improve the simulation accuracy,. Numerical simulations are performed for a wide range of flow and vegetation conditions and are validated by comparing with the laboratory experiments. Analysis of the simulated and experimentally measured flow field shows that the numerical simulation can satisfactorily reproduce the laboratory experiments, indicating that the proposed lattice Boltzmann model has high accuracy for simulating flow-vegetation interaction in open channel.National Natural Science Foundation of China (grant number: 11861003 and 11761005

The Thickness of Anodic Films on Aluminium

The thickness of the anodic film produced on aluminum in anodizing is intimately connected with some of the most important properties of the films such as corrosion resistance absorptive power insulation resistance etc.And is therefore of great interest (1,2). Napier and Westwood(3)have determined thicknesses of Adonic films obtained on anodizing in sulphuric acid baths of various strengths and at several temperatures .these Experiments were conducted at constant current and therefore the results are of little practical importance since all the commercial processes are conducted at constant voltage and not at constant current. Bradshaw and Clarke (4)Have collected similar data at constant voltage but their work was limited to the investigation of a sulphuric acid electrolyte of 20% -vol .concentration.In view of the non –availability of explicit Information about the conditions of anodizing in sulphuric acid which would yield films of maximum thickness, the present investigation was undertaken

Comparative toxicity of cyclic peptides and desipeptides in cultured rat hepatocyte

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