Results 71 to 80 of about 12,217,136 (305)
Spread-F occurrences and relationships with foF2 and h′F at low- and mid-latitudes in China
Earth, Planets and Space, 2018 Ionospheric irregularities are an important phenomenon in scientific studies and applications of radio-wave propagation. Spread-F echoes in ionograms are a type of high-frequency band irregularities that include frequency spread-F (FSF), range spread-F ...
Ning Wang +4 more
doaj +1 more source
Karakteristik Spread F di Atas Sumedang
, 2001 Karakteristik spread F di atas Sumedang diteliti menggunakan data hasil pengamatan dengan ionosonda IPS-71 dari bulan Maret sampai dengan Agustus 1998. Hasil menunjukkan pada periode tersebut spread F terbanyak terjadi pada bulan Mei - Juni antara pukul ...
Asnawi, Sri Suhartini, Sarmoko Saroso
core
Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions
FEBS Letters, EarlyView.The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang +4 more
wiley +1 more source
Ionospheric spread-F at Huancayo, sunspot activity and geomagnetic activity
, 1974 A superposed-epoch method is used to investigate the occurrence of spread-F at Huancayo relative to days of high sunspot activity and also relative to days of high geomagnetic activity.
Bowman, G. G.
core +1 more source
Structure‐forward targeting of claudins with synthetic binders
FEBS Letters, EarlyView.Claudins form the paracellular barriers between epithelial and endothelial tissues at tight junctions and are targets for molecular binders with the goal of modulating barrier permeability. Claudin‐binding molecules are relevant in drug delivery or in altering claudin interactions with disease‐causing proteins.
Alex J. Vecchio
wiley +1 more source
Multi-station investigation of spread F over Europe during low to high solar activity
Journal of Space Weather and Space Climate, 2018 Spread F is an ionospheric phenomenon which has been reported and analyzed extensively over equatorial regions on the basis of the Rayleigh-Taylor (R-T) instability.
Paul Krishnendu Sekhar +7 more
doaj +1 more source
The Nature of Spread?F Irregularities in Antarctica [PDF]
Australian Journal of Physics, 1968 Some characteristics of spread.F ionograms from the Antarctic region are discussed. Very disturbed periods, such as when magnetic storms are in progress, have been neglected in this analysis. Two important characteristics are the frequent occurrence of resolved as well as diffuse traces, and the appearance from time to time of an enhanced trace which ...
openaire +1 more source
Nature of Equatorial Spread-F Irregularities Derived from Spaced Fading Records at Thumba [PDF]
, 1978 266-268Spaced fading records of nighttime F-region echoes over Thumba are compared on spread-F days and non-spread-F days. The fading rate is considerably low on non- spread-F days.
Chandra, H, Rastogi, R G
core
Equatorial spread-F campaign over SHAR
, 1997 A RH-560 rocket instrumented with a Langmuir Probe and two pairs of double probes was launched from SHAR (dip 14 ° N) at 2130 hr LT (1ST) on 4 October 1988 during spread-F conditions.
Vyas, G. D. +4 more
core +1 more source
Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry
FEBS Letters, EarlyView.EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri +5 more
wiley +1 more source