Flavonoids are polyphenolic secondary metabolites that function as signaling molecules, allopathic compounds, phytoalexins, detoxifying agents and antimicrobial defensive compounds in plants. Blast caused by the fungus Magnaporthe oryzae is a serious disease affecting rice cultivation. In this study, we revealed natural flavonoid, tangeretin, substantially delays formation of M. appressoria blocks development blast lesions on Our data suggest tangeretin has antioxidant activity interferes...

N-Acylhomoserine lactone (AHL) and diffusible signal factor (DSF) molecules are two families of widely conserved quorum sensing (QS) signals. Quorum quenching (QQ) via enzymatic inactivation QS signals is a promising strategy biocontrol. In the search for biocontrol agent both AHL DSF signals, it has been recently identified that DSF-quenching Pseudomonas sp. HS-18 contains at least three genes (aigA, aigB, aigC) encoding AHL-acylases displaying strong AHL-acylase activities on various AHLs....

Objective: To observe the clinical efficacy and safety of berberine in treating patients with prediabetes. Methods: A total 76 prediabetes were enrolled, at end a one-month run-in period, 70 eligible to participate trial randomly assigned two groups 1:1 ratio, namely treatment group (n = 35) control 35). Members underwent lifestyle interventions, including dietary interventions exercise prescriptions, while participants received both oral administration 300 mg berberine, three times daily...

Adding to societal changes today, are the miscellaneous big data produced in different fields. Coupled with these is appearance of risk management. Admittedly, predict future trend by using conducive make everything more efficient and easy. Now, no matter companies or individuals, they increasingly focus on identifying risks managing them before risks. Effective management will lead deal potential problems. This thesis focuses flight delay area real time data. It proposes two prediction...

This paper deals with morphological studies of binary and ternary blends composed poly(styrene-co-acrylonitrile) (SAN), polyurethane elastomer (TPU) poly(ethylene-co-vinyl acetate) (EVA). Selective etching was found necessary to expose the morphologies blends. Chloroform or hot acetone, hexane/toluene (2/1v/v) NaOH/CH3OH (1wt%) were be selective agents for SAN, EVA TPU, respectively. SAN TPU form fine dispersion structure, while lead rough phase structure poor adhesion. These results are in...

With the rapid development of science and technology, advanced technical means such as information technology have been widely used in various fields society, realizing reform innovation different fields. Mage data Internet, cloud computing so on changed people's production lifestyle, society has entered a new era mage data. Combined with current situation agricultural development, we should create training base for enterprises, build perfect system, carry out cooperation colleges...

Nowadays, people live in an era of information explosion. People have to spend a lot time and energy filter their own resources every day. How intelligently recommend users is big challenge. At the same time, sparseness user-to-item rating data one major factors that deteriorate quality recommendation system. In order deal with problem, several recommended techniques been proposed, which additionally consider auxiliary improve accuracy prediction, such as textual for comments, summaries, or...

In recent years, the rapid development of science and technology has greatly improved level equipment manufacturing industry. Advanced based on CNC machine tools increasingly shown a unique important role. The wide application practical value for reference to industrial different countries in world. This paper conducts models simulates closed-loop control system large precision machining machines. software used simulation is Matlab Simulink. controller uses PID controller. results show that...

The problem of the maximal work that can be extracted from a system consisting one infinite heat reservoir and subsystem with generalized transfer law [q ∝ (Δ(T <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">n</sup> )) xmlns:xlink="http://www.w3.org/1999/xlink">m</sup> ], which includes convective (ΔT) ] radiative Δ(T )], is investigated in this paper. Finite-time exergy derived for fixed process duration by applying optimal control theory....

Abstract A new series of high‐solids [low‐VOC (volatile organic compound)content] mar resistant clearcoats (CL‐series) were prepared upon crosslinking a new‐synthesized hydroxyl‐terminated isophthalate‐based liquid oligoester (L‐311) with an hexakis(methoxymethylol)melamine (HMMM) resin, via acid‐catalyzed etherification reaction. The chemical, physical, and mechanical properties the CL‐clearcoats compared to those reference clearcoat (CRO). An attempt was made investigate effect that...

Cymbal transducer, as the fifth-generation flextensional transducer designed with a "sandwich" structure, is widely applied in underwater acoustics transducers, accelerometers and ultrasonic medical devices because of its advantages including high sensitivity, simple easy fabrication, low cost, convenient batch production. With such characteristics small size light weight, it can also better achieve lower frequencies, which difficult to realize traditional transducers. However, transducers...

In order to effectively prevent particle swarm into local optimum and enhance the ability of particles find optimal solution, paper proposes an improved algorithm. The is on background vehicle scheduling, which using load priority strategy, establishes model for scheduling problem with soft time windows. experimental results show that can quickly efficiently obtain solution routing problem.

In this paper, Raman spectroscopy experiments were used to distinguish the characteristics of inclusions (calcite, anatase, graphite etc.) between natural and heat-treated tanzanite. These preliminarily divided according their pleochroism. unheated tanzanite (N5), calcite inclusion is often interspersed with dolomite has shifts around 156, 283, 710, 1087 cm−1. other high temperature treatment samples, baseline increased peaks gradually shifted towards lower frequencies. Anatase in (N5) have...

For low hitting precision, bad robustness and high normal acceleration of traditional torpedo guidance law, the paper designed anti-torpedo torpedo(ATT) law based on variable structure control. State equation line sight angle between ATT target can be achieved from mathematical model moving relation torpedo, a controller to make constant that demonstrated by Lyapunov stability theory. The respectively constituted simulation ATT's intercepting trajectory fixed early Simulation results show...

This paper designs a LABVIEW program that can automatically play against computer game called lianliankan. Real-time cracking of an image-based is interesting and comprehensive project. fulfils all the necessary steps cracking, such as real-time image acquisition by screen capture, machine recognition pictures, implementation matching algorithm mouse movement control, under unified platform LABVIEW. be used example for teaching virtual instrument, or reference advanced applications robotics.

The aliasing probability in single and multiple input Linear Automata Signature Registers has been widely studied under the independent bit error model. This paper examines a class of Multiple-input (MISR), q-ary symmetric By modeling signature analyzer as two-state Markov process four-state process, we derived close form expression MISR for arbitrary test lengths. These results are used to compute compression technique

On the basis of dynamic modeling for underwater supercavitating vehicles, paper designed controllers adopting variable structure control strategy whose robustness can suppress unknown disturbance caused by imprecision existed in modeling. Theory analysis and simulation show that controller make pose angle track course trajectory steadily, realize decoupling controlling between three moving subsystems have good outside interference model's error, which assure vehicles maneuverability.