Prediction of acoustic noise distribution generated by electric machines has become an integral part of design and control in noise sensitive applications. This paper presents a fast and precise acoustic noise imaging technique for switched reluctance machines (SRMs). This method is based on distribution of radial vibration in the stator frame of the SRM. Radial vibration of the stator frame, …
Reliable control and optimal operation of the doubly fed induction generator (DFIG) is necessary to ensure high efficiency and high load-following capability in modern wind power plants. This is often difficult to achieve using conventional linear controllers, as wind power plants are nonlinear and contain many uncertainties. Furthermore, unbalanced conditions often exist on the power network, …
Sclerotinia sclerotiorum is a filamentous fungal phytopathogen capable of infecting many economically important crops and vegetables. The dinitroaniline fungicide fluazinam had not been registered for control of S. sclerotiorum in China until April 2014. In this study, control efficacy of fluazinam was determined and baseline sensitivity of S. sclerotiorum to this fungicide was established base…
The design and synthesis is reported for a fl uorescent conjugated polymer (CP), poly{[4,4,9,9-tetrakis(4-(octyloxy)phenyl-4,9-dihydro- s -indaceno[1,2-b:5,6-b′]dithiophene)]- alt - co -[4,7-di(thiophen-2-yl)-2,1,3-benzothiadiazole]}(PIDT-DBT), with absorption and emission profi les fallen within far-red/near infrared (FR/NIR) region and further demonstrate its application in long-term in vit…
Variance-based importance measure has proven itself as an effective tool to reflect the effects of input variables on the output. Owing to the desirable properties, researchers have paid lots of attention to improving efficiency in computing a variance-based importance measure. Based on the theory of point estimate, this article proposes a new algorithm,decomposing the importance measure into i…
Abstract. Composites based on graphene-based sheets have been fabricated by incorporating solution- processable functionalized graphene into an epoxy matrix, and their electromagnetic interference (EMI) shielding studies were studied. The composites show a low percolation threshold of 0.52 vol.%. EMI shielding effectiveness was tested over a frequency range of 8.2–12.4 GHz (X-band), and …
Abstract. A detonation method for preparing nanosized graphite powders from natural graphite is described. The process initiated by a detonator in an explosion vessel features quick release of energy, decomposition of HNO3 graphite intercalation compounds and the smashing action due to the detonation. The products were soot-like deposits on the inner walls of the vessel, and were studied b…
Abstract. Nickel-based catalysts supported on Al2O3 . SiO2 were prepared with modification of the second metal involving La, Co, Cu, Zr or Y, of which the catalytic behaviors were assessed in the ethanol steam reforming reaction. Activity test indicated that addition of La resulted in higher selectivity of hydrogen and lower selectivity of carbon monoxide, compared with Co-doped nickel cat…
Abstract. Medical waste constitutes one of the waste streams that should be dealt with special priority due to its potential negative impact on public health and on the environment. Incineration is a process that is widely used for the treatment of medical waste. However, self-supporting combustion of medical waste cannot avoid releasing many hazardous pollutants into our environment. The m…
ABSTRACT Natural variation in heading-date genes enables rice, a shortday (SD) plant, to flower early under long-day (LD) conditions at high latitudes. Through analysis of heading-date quantitative trait loci (QTL) with F7 recombinant inbred lines from the cross of early heading ‘H143’ and late heading ‘Milyang23 (M23)’, we found a minor-effect Early Heading3 (EH3) QTL in the Hd16 regi…
BACKGROUND: Probiotics are widely used in the food industry and medicine fields in China, but few studies have been conducted to evaluate the actual microbial amounts and species in probiotic products, which may conflict with the labels and mislead consumers to choose inappropriate foods or medicines. RESULTS: Twenty commercial dairy products and eight commercial ‘healthcare’ samples were …