Various observational tools are available for the study of F-layer irregularities in the equatorial region. These include optical observations of the depletion of electron density, GPS phase fluctuations, DMSP in situ observations of ion depletions, radar observations of coherent scatter from equatorial irregularities, and ionospheric soundings. Each makes contributions to observational studies...

Cytokinesis requires the formation of an actomyosin contractile ring between the two sets of sister chromatids. Annexin A2 is a calcium- and phospholipid-binding protein implicated in cortical actin remodeling. We report that annexin A2 accumulates at the equatorial cortex at the onset of cytokinesis and depletion of annexin A2 results in cytokinetic failure, due to a defective cleavage furrow ...

ankylosing spondylitis (as) is an inflammatory arthritis, which affects mainly spine and sacroiliac joints. according to recent studies, erap1 is the second most common candidate gene for  as susceptibility after hla-b27. the  aim of this study was to  determine the association of erap1 gene polymorphisms with as in iranian population. the study group comprised 387 iranian as patients and 316 h...

background: recently, it has been revealed that tyrosine kinase inhibitors (tkis) act through inducing both oxidative and endoplasmic reticulum (er) stress in chronic myeloid leukemia cells. however, er stress signaling triggers both apoptotic and survival processes within cells. nevertheless, mechanisms by which tkis avoid the pro-survival effects are not clear. the aim of this study was to ev...

The role of the Indonesian Throughflow (ITF) in the thermocline circulation of the low-latitude Pacific Ocean is explored using a high-resolution primitive equation ocean circulation model. Seasonally forced runs for a domain with an open Indonesian passage are compared with seasonally forced runs for a closed Pacific domain. Three cases are considered: one with no throughflow, one with 10 Sv o...

[1] The Silicic Acid Leakage Hypothesis (SALH) suggests that, during glacial periods, excess silicic acid was transported from the Southern Ocean to lower latitudes, which favored diatom production over coccolithophorid production and caused a drawdown of atmospheric CO2. Downcore records of Th-normalized opal fluxes and Pa/Th ratios from seven equatorial Atlantic cores were used to reconstruct...

The molecular structure of axial and equatorial conformers of 1-silyl-silacyclohexane, C(5)H(10)SiHSiH(3), and the thermodynamic equilibrium between these species were investigated by means of gas electron diffraction (GED), dynamic nuclear magnetic resonance (DNMR), temperature-dependent Raman spectroscopy, and quantum chemical calculations (CCSD(T), MP2 and DFT methods). According to GED, the...

It has recently been proposed, within the framework of the linear shallow-water equations, that tropical Pacific decadal variability (PDV) can be accounted for by basin modes with eigenperiods of 10 to 20 yr, amplifying a midlatitude wind forcing with an essentially white spectrum. Here the authors use a different formalism of linear equatorial wave theory. The Green’s function is computed for ...

A wavenumber-frequency spectrum analysis is performed for all longitudes in the domain 158S–158N using a long (;18 years) twice-daily record of satellite-observed outgoing longwave radiation (OLR), a good proxy for deep tropical convection. The broad nature of the spectrum is red in both zonal wavenumber and frequency. By removing an estimated background spectrum, numerous statistically signifi...