Hydrocarbon wells drilled vertically through longwall coal pillars are vulnerable to severe deformation and potential failure as a result of underground coal mining. The lithology of the host rocks play a critical role in well stability. In this study, a two dimensional finite element method is employed to investigate the horizontal shear offset, vertical delamination, and compression at the we...

We perform a case study on the evolution of current sheet in different regions around dipolarization front (DF), including magnetic-dip preceding DF, at and magnetic pileup region (MPR) behind DF based magnetospheric multiscale (MMS) observation July 31, 2017. In this event, MMS1 stays inside during whole bursty bulk flow (BBF) interval. Our analysis reveals that cross-tail is rolled up, signif...

Cathy J. Campbell, BPE, MSc, MD, Dip Sport Med,* James D. Carson, MD, Dip Sport Med,* Elena D. Diaconescu, MD,† Rick Celebrini, PT, PhD,‡ Marc R. Rizzardo, Dip Sports Physio, BScPT, MPE, BPE,‡ Veronique Godbout, MD, Dip Sport Med, MA, MedEd, BSc,§ Jennifer A. Fletcher, MD, Dip Sport Med,¶ Robert McCormack, MD,k Ross Outerbridge, MD, Dip Sport Med,** Taryn Taylor, MSc, MD, Dip Sport Med,†† Naama...

The internal orientation of fossil mass occurrences can be exploited as useful source of information about their primary depositional conditions. A series of studies, using different kinds of fossils, especially those with elongated shape (e.g., elongated gastropods), deal with their orientation and the subsequent reconstruction of the depositional conditions (e.g., paleocurrents and transport ...

In dip-coating processes a three-dimensional object, e.g. an entire car body, is dipped into a liquid bath. In order to simulate such processes, the space surrounding the object is decomposed into the so-called flow volumes, for which each intersection with a horizontal plane is connected. At any time the liquid’s surface then has a unique level within such a flow volume, which greatly simplifi...

The Rat Island earthquake of February 4, 1965 (origin time 05h 01m 21.8s, h = 40 km), is one of the largest earthquakes recorded in recent years. On the basis of the radiation patterns and the amplitudes of the great circle Rayleigh and Love waves, the earthquake is found to have the following characteristics: fault plane dip, 18ø; fault plane dip direction, N19øE; rupture propagation direction...

Building on the notions of time-variable filtering and the helix coordinate system, we develop software for filters that are smoothly variable in multiple dimensions. Multiscale prediction-error filters (PEFs) can estimate dips from recorded data and use the dip information to fill in unrecorded shot or receiver gathers. The data are typically divided into patches with approximately constant di...

Acousticians and other practitioners alike often describe acoustic conditions in performance spaces with standard objective parameters. Apart from a few exceptions, the parameters are calculated by integrating the sound energy of the impulse responses over time; this makes them inadequate for researching the acoustics in detail, especially in the early part of the room impulse response. This pa...