Abstract Alkanes are the most energy-rich form of carbon and widely dispersed in environment. Their transformation by microbes represents a key step global cycle. Alkane monooxygenase (AlkB), membrane-spanning metalloenzyme, converts straight chain alkanes to alcohols first microbially-mediated degradation alkanes, thereby playing critical role cycling bioremediation oil. AlkB biodiversity is attributed its ability oxidize various lengths, while individual AlkBs target relatively narrow...

Sea surface temperature (SST) is an important physical factor in the interaction between ocean and atmosphere. Accurate monitoring prediction of temporal spatial distribution SST are great significance dealing with climate change, disaster prevention, reduction, marine ecological protection. This study establishes a model sea for next five days East China using long-term short-term memory neural networks (LSTM). It investigates influence different parameters on accuracy. The sensitivity...

Due to the fact that existing traffic flow forecasting methods cannot completely reflect real time situation of road network, a new method short‐term prediction is proposed based on deep learning in this study. Firstly, order improve efficiency data processing, network compression correlation analysis and CX decomposition. Secondly, are divided into trend term random fluctuation by spectral decomposition method, influence accuracy removed. Finally, combining belief model kernel extreme...

High temperature superconducting (HTS) generator was promising in the wind power applications for its advantages weight, size and thermal stability against load fluctuations, especially "direct-driven" design. A 100 kW proposed demonstration of feasibility using HTS 10 MW turbine generators. The electromagnetic design optimization rotor were done finite element method (FEM). excitation coil designed considering variable working conditions. According to numerical results, a number suggestions...

The microgrid (MG) is an effective way to alleviate the impact of large-scale penetration distributed generations. Due seasonal characteristics rural areas, load curve MG different from urban MG. Besides, economy and stability MG's scheduling may be impacted due uncertainty generations' output. To adapt microgrid, a Wasserstein distance-based distributionally robust optimal model considering coordinated interaction among source-grid-load-storage proposed minimize operating costs in this...

Surface dielectric barrier discharges (SDBDs) have prospects for a wide variety of applications in the field flow control. In order to study characteristics SDBDs excited using microsecond pulses, compact microsecond-pulse generator with square pulses is developed and tested. The output voltage has amplitudes 0~10 kV, pulse repetition rates 1~5 kHz, pulsewidths 5~30 μs. rise time 120 ns fall 12 Moreover, working principle main circuit drive introduced. tested without load. results show that...

A high-flux linear plasma device in Sichuan University plasma-surface interaction (SCU-PSI) based on a cascaded arc source has been established to simulate the interactions between helium and hydrogen with plasma-facing components fusion reactors. In this paper, characterized by double-pin Langmuir probe. The results show that stable beam diameter of 26 mm was constrained very well at magnetic field strength 0.3 T. core density ion flux have strong dependence applied current, gas flow rate....

Convolutional long short-term memory (ConvLSTM) and convolutional gated recurrent unit (ConvGRU) are two widely adopted deep learning models that combine mechanisms with operations for spatiotemporal sequences forecasting. To clarify the convergence speed classification ability of above models, using same model architecture to predict problem is necessary. This research treats district-level warning short-duration heavy rainfall in Beijing as a binary learning, composite radar reflectivity...

New developments of the wind power technologies open a wide future in next decade. One such is novel high temperature superconducting (HTS) generators using turbine, which can greatly enhance output stability while sharply cut down volume and weight. A 100 kW model generator proposed racetrack excitation coil for it designed tested considering against current pulses. The magnetic field distribution numerically evaluated measured via BSCCO practice liquid Nitrogen. electromagnetic design...

Plasma synthetic jet (PSJ) has a wide application prospect in flow separation suppression and boundary layer control. Comparing with traditional control methods, synchronous discharges of PSJ high repetition frequency energy could achieve better effect because it can meet multi-angle, wide-range long-time requirements. In this paper, microsecond-pulse power supply for three plasma actuators (PSJA) is developed. Parameters output pulses are as follows: the maximum voltage pulse 10 kV, rate...

In a tunneling boring machine (TBM), to obtain the attitude in real time is very important for driver. However, current laser targeting system has large delay before obtaining attitude. So, an adaptive-neuro-fuzzy-based information fusion method proposed predict of time. method, dual-rate used fuse and two-axis inclinometer, then roll pitch angles with higher rate provide smoother prediction. Considering that measurement error exists, adaptive neuro-fuzzy inference (ANFIS) model error,...

The values of distributed generator (DG) are very dependent on its location as it was installed in distribution feeders well type and size. In order to enhance the reliability obtain benefits for DG placement, an analytical method placements considering improvements is proposed this paper. tries solve optimal placement from viewpoint achieving maximal DG. At same time, also sets out a evaluate network with DG, then make use linear interpolation achieve customer interruption cost. Test...

Missile-engine is an important part of missile system and a crucial factor to form military battle effectiveness. Considering the long-term stored one-time expended characteristics missile-engine, it significant study storage reliability assessment missile-engine determine weak moment. For digging potential life variation launched. According reliable can be used as its evaluation index. This paper concentrates on based Bayesian approach, useful for new maintenance program.

High-rise and ultra high-rise buildings have solved the problems of limitations caused by construction land to a certain extent, provided better view more convenience for people at same time. Problems such as high fire loads, difficulties in occupants evacuation firefighting become focus public departments. This paper constructs risk evaluation indicator system an AHP-based model civil buildings. It applies fuzzy hierarchy theory hotel city provides theoretical support prevention control these risks.

Abstract Frequent fire incidents on electric bicycles; have brought great harm to consumers’ personal and property safety. This article sort analyze the data, combine collected accident reports of bicycles. Due incompleteness this use Bayesian Network construct network topology model bicycles risk, fuzzy set theory solve Fuzzy computing language discussed by experts. Finally, is used calculate example, risk bicycle in example low. method provides a reference for investigation analysis

Preference-based reinforcement learning (PbRL) has shown impressive capabilities in training agents without reward engineering. However, a notable limitation of PbRL is its dependency on substantial human feedback. This stems from the loop, which entails accurate compounded with value/policy learning, necessitating considerable number samples. To boost we propose SEER, an efficient method that integrates label smoothing and policy regularization techniques. Label reduces overfitting model by...

In this paper, the electric power supply chain has multiple players, such as fuel suppliers, generators and customers, each maximizing their individual profit. Coupling optimal decision-making of members, a model government control with CO2 emission tax in is built on basis Cournot game. This shows government's participation out The multi-layer optimization model, whose KKT system mixed nonlinear complementarity problem. By using function to reformulate into set algebraic equations, can be...

Nash equilibrium is an important decision-making result for all players in non-cooperation game, problems of cooperation and competition between power generation group strategic futures contracts market the spot investigated based on transmission network constraints. We consider Cournot game theoretic model to simulate groups, moreover, electricity joint non-inferior established. This a multi-layer optimization model. By using nonlinear complementary function reformulate KKT system problem,...

Summary form only given. Plasma aerodynamic excitation based on surface dielectric discharge is a effective approach for flow control, which can significantly improve the characteristics of aircraft. However, plasma interaction region limited and there are no significant effects by using typical two-electrodes sustained nanosecond-pulse barrier discharge, therefore, it difficult to satisfy actual industrial applications. In this paper, experimental investigations three-electrode structure...

Characteristics of plasma synthetic jet (PSJ) actuators driven by repetitive pulsed discharge have drawn much attention. In this paper, the PSJ actuator is composed a pair tungsten electrodes and boron nitride cavity without cap. The has diameter 8 mm volume 400 mm'. distance between two ranges from 1 to 4 mm. excited homemade generator CMPC-40D, output pulse parameters which are as follows: maximum voltage 30 kV, rise time 0.5 μs, width repetition rate 0to5 kHz. Effects frequency (PRF) air...