Purpose: The Nova 7 T RF coil, which has single-channel transmission (TX) [1] and 24 or 32 channel reception (RX) [2,3] (Nova Medical, Wilmington, MA) is notable for its excellent signal to noise (SNR) performance. The coil designers have demonstrated that separate dedicated coils for transmission and reception (TX-only, RX-only) perform better than a combined-element transceiver coil. One disa...

Genes encoding plant nucleotide-binding leucine-rich repeat (NB-LRR) proteins confer dominant resistance to diverse pathogens. The wild-type potato NB-LRR protein Rx confers resistance against a single strain of potato virus X (PVX), whereas LRR mutants protect against both a second PVX strain and the distantly related poplar mosaic virus (PopMV). In one of the Rx mutants there was a cost to th...

We present RXTE observations of two recently identified massive X-ray binaries. RX J0440.9+4431/BSD 24–491 and RX J1037.5–564/LS 1698 are confirmed as accreting Be/X-ray systems following the discovery of X-ray pulsations, with barycentric pulse periods of 202.5±0.5 s and 860±2 s respectively. The X-ray spectral analysis shows that the energy spectra of the pulsars can be represented by a power...

BACKGROUND Personal digital assistants (PDAs) allow healthcare professionals to check for potential drug-drug interactions (DDIs) at the point of care, reducing the need to consult traditional references. However, PDAs can only be as effective as the software programs they use. OBJECTIVE To examine the ability of DDI software programs manufactured for Palm OS-compatible PDAs in detecting clin...

Total body irradiation combined with chemotherapy is currently the most effective procedure as a preparative myeloablative regimen. However, resistance to radiotherapy and chemotherapy in refractory acute myeloid leukemia is associated with short-time recurrence after allogeneic hematopoietic stem cell transplantation. To address this issue, we used three cell lines, HL60, HL60/ADR (adriamycin-...

PURPOSE Microphthalmia, anophthalmia, and coloboma are ocular malformations with a significant genetic component. Rx is a homeobox gene expressed early in the developing retina and is important in retinal cell fate specification as well as stem cell proliferation. We screened a group of 24 patients with microphthalmia, coloboma, and/or anophthalmia for RX mutations. METHODS We used standard P...

Background. Ulcerative proctitis (UP) is typically treated initially with oral 5-aminosalicylate ("5-ASA"), mesalamine suppository, or mesalamine enema ("UP Rx"). Little is known about their effectiveness in practice. Methods. Using a US health insurance database, we identified new-onset UP patients between January 1, 2005, and December 31, 2007, based on the following: (1) initiation of UP Rx;...

RX J0720.4−3125 is the third brightest neutron star in the soft X-ray sky and has been a source of mystery since its discovery, as its long 8-s period separates it from the population of typical radio pulsars. Three models were proposed for this source: a neutron star accreting from the interstellar medium, an off-beam radio pulsar, or an old, cooling magnetar. Using data from Chandra, ROSAT, a...

In this section Okumura and Hata propagation models are discussed. The two models or their modified version are frequently used throughout commercially available RF engineering tools. 1.1 Okumura Propagation Model Okumura's model is one of the most frequently used macroscopic propagation models. It was developed during the mid 1960's as the result of large-scale studies conducted in and around ...

Direct-sequence code division multiple access (DS-CDMA) is a promising uplink access technology for broadband cellular mobile communication systems. In this paper, we propose a joint transmit (Tx)/iterative receive (Rx) frequency-domain equalization (FDE) for DS-CDMA. In the proposed scheme, simple one-tap FDE at the transmitter and iterative one-tap FDE at the receiver are jointly performed us...