نتایج جستجو برای: drifting ions

تعداد نتایج: 139782  

Journal: :Biophysical journal 2009
Sandeep Kaushik Debasisa Mohanty Avadhesha Surolia

The binding of carbohydrate substrates to concanavalin A (Canavalia ensiformis agglutinin (ConA)) is essential for its interaction with various glycoproteins. Even though metal ions are known to control the sugar binding ability of legume lectins, the interplay between sugar and metal ion binding to ConA has not been elucidated in a detailed manner at the atomic level. We have carried out long,...

2001
Y. I. Galperin

Recent analysis of the ground-based observations of the Polarization Jet (PJ) effects in the subauroral ionosphere has shown that PJ can rapidly develop in the nearmidnight sector near the Harang Discontinuity (HD). Based on these observations, a simple, semi-quantitative theory of the PJ formation and its main characteristics is constructed. According to the model, PJ starts to develop, as pro...

2004
T. J. Stubbs M. Lockwood P. Cargill M. Grande B. Kellett C. Perry

We study here the injection and transport of ions in the convection-dominated region of the Earth’s magnetosphere. The total ion counts from the CAMMICE MICS instrument aboard the POLAR spacecraft are used to generate occurrence probability distributions of magnetospheric ion populations. MICS ion spectra are characterised by both the peak in the differential energy flux, and the average energy...

2016
Rodrigo Echeveste Claudius Gros

The study of balanced networks of excitatory and inhibitory neurons has led to several open questions. On the one hand it is yet unclear whether the asynchronous state observed in the brain is autonomously generated, or if it results from the interplay between external drivings and internal dynamics. It is also not known, which kind of network variabilities will lead to irregular spiking and wh...

2004
R. T. Edwards

Using new techniques based on the polarimetric fluctuation spectrum, the fluctuation behaviour of the polarization of individual pulses is examined in three pulsars that show drifting subpulses, allowing various aspects of the fluctuations to be quantified for the first time. Of the three pulsars studied, only PSR B0809+74 shows behaviour completely consistent with the superposition of orthogon...

Journal: :iranian journal of public health 0
sh. jafari d. sedghi

118 dentistry students were studied to show the possible correlation between ph, concentration of ca2+, p3+, na+, and k+ of saliva and decay, missing, and filling tooth (dmft index). candidates were between 20 and 30 years old and had no background systemic disorders; medial and dental histories, age, sex, and dmft index were recorded in a questionnaire organized for this purpose. saliva sample...

1998
B. C. Joshi

The pair of drifting subpulses of the radio pulsar PSR B0031−07 appear to be well separated from each other on the average, overlapping at less than one thirtieth of the peak energy. Strictly, the integrated profile of the pair (after removing the drift) does not show more than two subpulses; however this result is likely to be modified with the availability of more data. On the other hand, rar...

Journal: :Physical review letters 2013
J Pereda F L Mota L Chen B Billia D Tourret Y Song J-M Debierre R Guérin A Karma R Trivedi N Bergeon

We present a detailed analysis of oscillatory modes during three-dimensional cellular growth in a diffusive transport regime. We ground our analysis primarily on in situ observations of directional solidification experiments of a transparent succinonitrile 0.24wt% camphor alloy performed in microgravity conditions onboard the International Space Station. This study completes our previous report...

2014
Rajesh Dey Amlan Pal Atreyee Biswas Achintya Das

This paper presents a method of dynamic compensation of creeping and drifting error of load cell response using Adaptive technique. The case is illustrated by showing how the response of a load cell can be improved. The load cell is a sensor, whose output gives an damped oscillatory response due to creeping and drifting error, in which the measured values contribute to the response parameter. S...

Journal: :The EMBO journal 2013
David Sherratt

Remarkably little is known about how bacterial chromosomes and their plasmids are partitioned to daughter cells prior to cell division, despite extensive experimentation and bioinformatic analysis. An in vitro study described in the current issue of The EMBO Journal recapitulates many features of plasmid partition in vivo and provides insight into how protein patterning on the nucleoid, determi...

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