Two major training techniques for wireless channels are time division multiplexed (TDM) training and superimposed training. For the TDM schemes with regular periodic placements (RPP), the closedform expression for the steady-state minimum mean square error (MMSE) of channel estimate is obtained as a function of placement for Gauss-Markov flat fading channels. We then show that, among all period...

We investigated the renal responses to NO synthase (NOS) inhibition with N-monomethyl-l-arginine (l-NMA; 30 mg/kg) in anesthetized rats in which renal perfusion pressure (RPP) to the left kidney was mechanically adjusted. Acutel-NMA increased blood pressure (BP, ∼20%) and renal vascular resistance (RVR) rose (∼50%) in the right kidneys that were always exposed to high RPP. In group 1, the left ...

Xia M, Li PL, Li N. Telemetric signal-driven servocontrol of renal perfusion pressure in acute and chronic rat experiments. Am J Physiol Regul Integr Comp Physiol 295: R1494–R1501, 2008. First published September 24, 2008; doi:10.1152/ajpregu.90631.2008.—The present study was designed to take advantage of telemetry data acquisition and develop an easy and reliable system to servocontrol renal p...

BACKGROUND ATP and derivatives are recognized to be essential agents of paracrine signaling. It was reported that ATP is an important regulator of the pressure-natriuresis mechanism. Information on the sources of ATP, the mechanisms of its release, and its relationship to blood pressure has been limited by the inability to precisely measure dynamic changes in intrarenal ATP levels in vivo. ME...

Using ε-bias spaces over F2, we show that the Remote Point Problem (RPP), introduced by Alon et al [APY09], has an NC algorithm (achieving the same parameters as [APY09]). We study a generalization of the Remote Point Problem to groups: we replace Fn 2 by Gn for an arbitrary fixed group G. When G is Abelian we give an NC algorithm for RPP, again using ε-bias spaces. For nonabelian G, we give a ...

Siu KL, Ahn JM, Chon KH. Electrohydraulic pump-driven closed-loop blood pressure regulatory system. Am J Physiol Renal Physiol 296: F1530–F1536, 2009. First published April 9, 2009; doi:10.1152/ajprenal.90756.2008.—In this paper, we describe our design for a new electrohydraulic (EH) pump-driven renal perfusion pressure (RPP)-regulatory system capable of implementing precise and rapid RPP regul...

We studied the pattern of plasma active renin concentration (ARC), prorenin concentration (PRC), renal renin concentration, and the renin mRNA levels in ovine fetuses subjected for 24 h to reduced renal perfusion pressure (RPP). The results obtained in five animals (133.8 ± 1.4 days of gestation) in which RPP was reduced by 10 mmHg were compared with those in seven control fetuses (130.3 ± 0.8 ...

This study investigated the performance of recycled polypropylene (RPP)/peanut shell powder (PSP) composites with untreated PSP and treated PSP with alkaline peroxide. The RPP/PSP and RPP/PSPH2O2 composites were prepared by melt mixing and compression molding at different PSP loadings (10 wt.% to 40 wt.%). The samples were characterized by processing properties, tensile properties, Fourier tran...

Using ε-bias spaces over F2, we show that the Remote Point Problem (RPP), introduced by Alon et al [APY09], has an NC algorithm (achieving the same parameters as [APY09]). We study a generalization of the Remote Point Problem to groups: we replace F2 by G n for an arbitrary fixed group G. When G is Abelian we give an NC algorithm for RPP, again using ε-bias spaces. For nonabelian G, we give a d...

To assess the afferent arteriolar autoregulatory response during increased activity of the tubuloglomerular feedback (TGF) mechanism and to delineate the contribution of neuronal nitric oxide synthase (nNOS) to this response, afferent arteriolar diameter responses to changes in renal perfusion pressure (RPP) were monitored in vitro using the blood-perfused rat juxtamedullary nephron preparation...