Abstract In this paper we give local curvature estimates for the Laplacian flow on closed $$G_{2}$$ G 2 -structures under condition that Ricci is bounded along flow. The main ingredient consists of idea Kotschwar et al. (J Funct Anal 271(9):2604–2630, 2016) who gave com...

In this paper, we present the characteristics of high-performance strain-compensated MOCVD-grown 1200-nm InGaAs and 1300-nm InGaAsN quantum-well (QW) lasers using AsH3 and U-Dimethylhydrazine as the group V precursors. The design of the InGaAsN QW active region utilizes an In-content of approximately 40%, which requires only approximately 0.5% N-content to realize emission wavelengths up to 131...

0360-1315/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.compedu.2008.12.020 * Corresponding author. Tel.: +1 919 513 1286; fax E-mail address: [email protected] (L.A. Annet The popularity of video games has transcended entertainment crossing into the world of education. While the literature base on educational gaming is growing, there is still a lack of systematic study of this emerg...

We describe observations of atmospheric reactive nitrogen compounds including NO, NO2, total peroxy nitrates, total alkyl nitrates, and HNO3 and their correlation with temperature. The measurements were made at a rural location 1315 m a.s.l. on the western slope of the Sierra Nevada Mountains in California during summer of 2001. The ratio of HNO3 to its source molecule, NO2, and the ratio of HN...

Ocean acoustic noise can be processed efficiently to extract Green's function information between two receivers. By using noise array-processing techniques, it has been demonstrated that a passive array can be used as a fathometer [Siderius, et al., J. Acoust. Soc. Am. 120, 1315-1323 (2006)]. Here, this approach is derived in both frequency and time domains and the output corresponds to the ref...

The detection of a gold nanoparticle contrast agent is demonstrated using a photothermal modulation technique and phase sensitive optical coherence tomography (OCT). A focused beam from a laser diode at 808 nm is modulated at frequencies of 500 Hz-60 kHz while irradiating a solution containing nanoshells. Because the nanoshells are designed to have a high absorption coefficient at 808 nm, the l...

Workers in many laboratories (1, 4, 5, 11, 1315) have isolated outer membrane, inner membrane, and matrix fractions from beef heart and rat liver mitochondria and have assayed the enzymes associated with each fraction . Little attention has been directed towards the contents of the intracristal space, that space within the infoldings of the cristae and continuous with the space between the oute...