Report5 March 2020Open Access Transparent process Programming Escherichia coli to function as a digital display Jonghyeon Shin Department of Biological Engineering, Massachusetts Institute Technology, Cambridge, MA, USA Search for more papers by this author Shuyi Zhang Bryan S Der Alec AK Nielsen Christopher A Voigt Corresponding Author [email protected] orcid.org/0000-0003-0844-4776 Information Shin1, Zhang1, Der1, Nielsen1 and *,1 1Department *Corresponding author. Tel: +1 617 324 4851;...

Most industrial products degrade with usage. To capture degradation patterns and schedule condition-based maintenance actions, it is necessary to model the process predict system remaining useful life (RUL). In practice, operating environments loading conditions are dynamic stochastic, which introduces extra randomness in process. account for environmental impacts, this article proposes a nonlinear Wiener random time-varying covariate. We covariate an Ornstein–Uhlenbeck process, link rate by...

A model of acoustic diodes is realized by a thin brass plate with single-sided periodical grating structure immersed in water and studied both numerically experimentally. The unidirectional transmission waves identified two different frequency ranges, which can be systematically controlled adjusting the sizes structural units. results indicate that have advantages tunable range, broader bandwidth, simple as well being easy to achieved. remarkable effect has great potential applications...

In this paper, the pressure drop and heat transfer features of a microchannel applying micropin fins are investigated by numerical simulations experiments. The microchannel, which is 20-mm long, 2.7-mm wide, 0.3-mm deep, fabricated with copper consisted staggered diamond fins. visualization experiments, means advanced technology micro-particle image velocimetry (PIV), conducted to discuss mechanism analysing flow regimes. Meanwhile, 3D-coupled applied for combination experiments in research....

The effect of cascade aerodynamic optimization on turbomachinery design is very significant. However, for most traditional methods, parameters are considered as boundary conditions and rarely directly used the variables to realize optimization. Given this problem, paper proposes an improved method in which incidence angle nine geometric parameterize one modified algorithm adopted find with optimal performance. parameterization approach based Non-Uniform Rational B-Splines (NURBS) method,...

The tubular acoustic metamaterial with the double negativity based on membranes and side holes periodically distributed along a pipe is studied Bloch theory. results are verified by full-wave simulation method used to explain related experimental phenomena: low-frequency forbidden band starting from zero Hertz relations between cutoff frequencies of pass bands in single metamaterials composed them. Based theory, structural parameters optimized achieve maximum negative phase velocity (PBNV)...

The thermal diffusivity of fiber-reinforced composites (Al2O3x/SAE321) has been studied by a photoacoustic piezoelectric technique based on simplified thermoelastic theory. It is shown that this method easy to perform and especially effective in determining the average characters materials with microinhomogeneous structures.

During the operation of an active clearance control (ACC) system a turbine, aerodynamic performance intake grille indirectly influences its control. To improve performance, optimization method is proposed, consisting parameterization, algorithm, and fitness evaluation. geometry represented by seven geometric variables. A modified social spider algorithm used as algorithm. evaluate grille, special function adopted, obtained using adaptive topological multi-layer feedforward artificial neural...

Theoretical studies of the AC photothermal and electrothermal responses semiconductor p-n junction devices with regard to photogenerated or applied voltages are presented, which cover entire set optical, electronic, thermal geometric parameters involved in operation a conventional device. In theoretical analyses, coupling between DC components time-dependent transport equations minority carriers is considered, thermalization due across space-charge region equivalent series resistance effect...

The piezoelectric photoacoustic effect of silicon wafers with a p/n junction in the dc electric field is studied experimentally and theoretically. Based on transport properties semiconductors, four kinds thermal wave sources are considered: (i) instantaneous intraband nonradiative thermalization, (ii) interband bulk recombination photogenerated carriers (PGC), (iii) surface PGC, (iv) Joule thermalization PGC applied field. theoretical results good agreement those experiment. Both show that...

With the introduction of new generation artificial intelligence technology into military field, unmanned aerial vehicle (UAV) swarm operation, as an important form intelligent has attracted attention various countries. In this paper, we consider problem coordinated confrontation between UAV swarms in plane area. An improved "SAC-OD" rules and combat strategy are employed to establish decision-making model for conflict where each is regarded independent individual. SAC-OD, keeps on...

Love-mode immunosensors based on ZnO/36degYX-LiTaO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> structures are studied. The ZnO films grown the 36degYX-LiTaO substrates by RF magnetron sputtering technique. crystalline of investigated X-ray diffraction (XRD) analysis, which show that highly orientated (002) obtained. Then sensors fabricated for monitoring antibody-antigen immunoreactions in aqueous solutions real time. results...