نتایج جستجو برای: adaptive loading
تعداد نتایج: 274387 فیلتر نتایج به سال:
Muscles and tendons are highly adaptive tissues in response to chronic changes in loading and to aging. A remarkable reorganization in muscle architecture occurs in both conditions together with significant alterations in tendon mechanical properties. This review discusses the possible mechanisms underlying these myotendinous changes and the influence thereof on the behavior of the muscle-tendo...
Peptidergic sensory nerve fibers innervating bone and periosteum are rich in calcitonin gene-related peptide (CGRP), an osteoanabolic neurotransmitter. There are two CGRP isoforms, CGRPα and CGRPβ. Sensory fibers are a potential means by which the nervous system may detect and respond to loading events within the skeleton. However, the functional role of the nervous system in the response of bo...
Multi Carrier CDMA (MC-CDMA) has shown better results than conventional OFDM systems due to the frequency diversity we achieve with frequency spreading. This spreading is more effective whichever better subcarrier states are found. So the optimal approach should load the subcarriers adaptively according to the subcarriers state. In this paper we investigate the use of adaptive grouped multicarr...
Lipid transfer proteins, such as molecules of the saposin family, facilitate extraction of lipids from biological membranes for their loading onto CD1d molecules. Although it has been shown that prosaposin-deficient mice fail to positively select invariant natural killer T (iNKT) cells, it remains unclear whether saposins can facilitate loading of endogenous iNKT cell agonists in the periphery ...
This paper presents a new algorithm for distributing bits to the subchannels of a DMT modem. The so-called Inverse Robin Hood algorithm converges rapidly and can effectively optimise the overall bit error rate in a non-Gaussian channel. Key-words: Discrete multi-tone modulation, adaptive bit-loading, DSL modems, non-Gaussian channels.
Estrogen receptor-α (ERα) is crucial for the adaptive response of bone to loading but the role of endogenous estradiol (E2) for this response is unclear. To determine in vivo the ligand dependency and relative roles of different ERα domains for the osteogenic response to mechanical loading, gene-targeted mouse models with (1) a complete ERα inactivation (ERα(-/-) ), (2) specific inactivation of...
Introduction The SENSE method for accelerated MR imaging [1] is based on a least squares inverse solution that is frequently ill-conditioned, which results in a loss in SNR due to variance inflation. The SNR loss factor due to ill-conditioning, relative to phased array combining [2] for optimum SNR without acceleration, is referred to as the G-factor. Ill-conditioning of the inverse solution is...
We previously reported that the deletion of the pH sensor GPR4 causes a non-gap metabolic acidosis and defective net acid excretion (NAE) in the GPR4 knockout mouse (GPR4-/-) (Sun X, Yang LV, Tiegs BC, Arend LJ, McGraw DW, Penn RB, and Petrovic S. J Am Soc Nephrol 21: 1745-1755, 2010). Since the major regulatory site of NAE in the kidney is the collecting duct (CD), we examined acid-base transp...
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