Thirteen patients with severe chronic aortic regurgitation (mean age 52.5 years) were studied by serial M-mode echocardiography. When first studied, none had breathlessness caused by left ventricular failure (LVF). Nine of these patients remained asymptomatic over a mean period of 4 years, 3 months (no LVF group); the other four patients developed left ventricular failure with dyspnea after a m...

The use of Tissue Doppler Imaging Imaging (TDI) has allowed to obtain velocity, strain and strain rate parameters in real time and is currently used routinely in the echocardiography lab. For analysis2D image sequences, profiles are marked on the image, and quantitative time profiles are obtained from them, a procedure known as anatomic M-mode. For correct quantification, the position of the re...

With the advent of 2 dimensional echocardiography (2D echo), non-invasive cardiac diagnosis has been made more refined and reliable, especially when combined with the M mode echocardiographic presentation of the heart. For the last decade M mode echocardiography (M mode echo) has been the mainstay of non-invasive cardiac diagnosis, but M mode echo presents certain limitations, namely it shows o...

We demonstrate that appropriately designed doped multimode fibers provide robust single-mode output when used within a fiber laser cavity. Using a novel large-mode-area fiber, we demonstrate what we believe to be record single-mode (M(2) <1.2) pulse energies of >0.5 mJ from a Q -switched fiber laser and even higher pulse energies (as high as 0.85 mJ) with slightly compromised spatial-mode quali...

A simple and general description of the dynamics of a narrow-eccentric ring is presented. We view an eccentric ring which precesses uniformly at a slow rate as exhibiting a global m = 1 mode, which can be seen as originating from a standing wave superposed on an axisymmetric background. We adopt a continuum description using the language of fluid dynamics which gives equivalent results for the ...

We show that the Fast Encryption Algorithm for Multimedia (FEA-w proposed by Yi et a1 is insecure. In particular, we present a simple attack that reduces the key to solving a set of linear equations. The low complexity of the attack combined with its simplicity makes it feasible in many multimedia applications. 11. FEA-M DESCRIPTION FEA-M encrypts 64 x 64 Boolean plaintext matrices using encryp...

-Quantitative analysis of transmitted cardiac motion in fetal lung is evaluated by applying correlation techniques to digitized M-mode images in 21 patients, subdivided into two subgroups by gestational age: (I) 2 5 3 0 weeks (11 patients), and (II) >_35 weeks (10 patients). The corresponding numbers of M-mode images analyzed for each group are 23 and 18, respectively. This partition is expecte...

When interactively modifying or automatically animating the source frequency, the displayed propagating mode is by default the highest order mode. This is very usefull to intuitively understand the order of succession of the cutoo frequencies of the various modes. When taking a very rectangular waveguide { e.g. with a high a=b ratio { (see Fig. 3), it becomes evident, that the cutoo frequencies...

We have investigated the distribution of several recently inserted Alu family members within representatives of diverse human groups. Human population studies using 65 unrelated human DNA samples, as well as a familial study to test inheritance, showed that individual Alu family members could be divided into three groups. The first group consisted of relatively older Alu family members which we...

Résumé Research Application Summary Introgressing resistance to Turcicum leaf blight and mapping of associated quantitative trait loci in sorghum Mayada Mamoun Beshir1, 2, Okori, P.1, Abdelbagi Ali, M.2 & Gibson, P.1, 3 1Department of Crop Science, Makerere University, P .O. Box 7062, Kampala, Uganda 2Agricultural Research Corporation, P. O. Box 126, Wad Medani, Sudan 3Department of Plants, Soi...