نتایج جستجو برای: limiting strength ratio lsr
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یکی از روشهای ساده سازی پیکهای nmr استفاده از واکنشگرهای جابجایی لانتانیدی (lsr) می باشد، که این واکنشگرها کمپلکسی از یون لانتانید و b دی کتون می باشند. ابتدا با استفاده از یون لانتانیدی eu3+ و b دی کتونهای استیل استون(aa)، تری فلوئورواستیل استون (tfaa)، 2،2،6،-6 تترامتیل 3-، -5 هپتان دی اون (thd) و 6،6،7،7،8،8،8 هپافلوئورو 2،-2 دی متیل 3،-5 اکتان دی اون (fod) انواع مختلف lsr سنتز گردید و میزان...
This memo defines an portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects to configure and/or monitor a Multiprotocol Label Switching (MPLS) Label Switching Router (LSR). Srinivasan, et al. Standards Track [Page 1] RFC 3813 MPLS LSR MIB June 2004
Propagated electromagnetic signal over the cellular radio communication channels and interfaces are usually highly stochastic complex with unequal noise variation pattern. This is due to multipath nature of propagation diverse mechanisms that impact strength at receiver en-route transmitter, verse versa. also makes measurement, predictive modeling estimation based analysis such very challenging...
Species pool hypothesis is broadly known and frequently tested in various regions and vegetation types. However it has not been tested in the arid Xinjiang region of China due to lack of data. Here with systematic data from references and field survey, we comprehensively examined species pool hypothesis in this region. Took species richness in 0.1° × 0.1° grid cells as regional species richness...
We find that a steady state bar induces transient features at low velocities in the solar neighborhood velocity distribution due to the initial response of the disk, following the growth of the bar. We associate these velocity streams with two quasi-periodic orbital families, librating around the stable x1(1) and x1(2) orbits near the bar’s outer Lindblad resonance (OLR). In a reference frame m...
Stark many-body localization (SMBL) is a phenomenon observed in interacting systems with nearly uniform spatial gradient applied field. Contrasting to the traditional phenomenon, SMBL does not require disorder. Here we investigate spin-$1/2$ described by Heisenberg model including next-nearest-neighbor exchange coupling. By employing an exact diagonalization approach and time evolution calculat...
To explore whether morphometry of intracellular membrane-limited subcompartments can be used to follow physiological volume changes in such subcompartments in hearts rapidly fixed by perfusion fixation, we have measured osmotically induced volume changes in electron micrographs of longitudinally oriented sarcoplasmic reticulum (LSR) and terminal cisterns (TC) of rat left ventricular myocardial ...
Parents may adapt their offspring sex ratio in response to their own phenotype and environmental conditions. The most significant causes for adaptive sex-ratio variation might express themselves as different distributions of fitness components between sexes along a given variable. Several causes for differential sex allocation in raptors with reversed sexual size dimorphism have been suggested....
the main purpose of cementing of the well is to provide effective zonal isolation for the entire life of wells. the standard cements cannot prevent loss of zonal isolation when the stress level in the well cement is severely fluctuated. since elastic cements improve elastic properties, recently, a number of studies have been done in this area. for this purpose, a nanoparticle, named ex-ripi, wa...
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