Results 21 to 30 of about 14,538,904 (339)
Twist1 controls a cell-specification switch governing cell fate decisions within the cardiac neural crest. [PDF]
PLoS Genetics, 2013 Neural crest cells are multipotent progenitor cells that can generate both ectodermal cell types, such as neurons, and mesodermal cell types, such as smooth muscle. The mechanisms controlling this cell fate choice are not known.
Joshua W Vincentz +5 more
doaj +1 more source
Resource-Efficient Fusion with Pre-Compensated Transmissions for Cooperative Spectrum Sensing
Sensors, 2015 Recently, a novel fusion scheme for cooperative spectrum sensing was proposed for saving resources in the control channel. Secondary users (SUs) simultaneously report their decisions using binary modulations with the same carrier frequencies.
Dayan Adionel Guimarães +2 more
doaj +1 more source
Bearing Estimation Using Double Frequency Reassignment for a Linear Passive Array
Polish Maritime Research, 2017 The paper demonstrates the use of frequency reassignment for bearing estimation. For this task, signals derived from a linear equispaced passive array are used.
Czarnecki Krzysztof, Leśniak Wojciech
doaj +1 more source
Suitable Spreading Sequences for Asynchronous MC-CDMA Systems
Journal of Telecommunications and Information Technology, 2018 In order to meet the demand of high data rate transmission with good quality maintained, the multi-carrier code division multiple access (MC-CDMA) technology is considered for the next generation wireless communication systems. However, their high crest
Mouad Addad, Ali Djebbari
doaj +1 more source
Optimization of the Crest Factor for Complex-Valued Multisine Signals [PDF]
Radioengineering, 2023 Multisine signals are commonly used in the measurement of dynamic systems and wireless channels. For optimal measurements with a high dynamic range, a low Crest Factor (CF) excitation signal is required. In this paper, a modified approach to optimize the
B. Cseppento, A. Retzler, Z. Kollar
doaj
Developmental Dynamics, 2020 The neural crest is a transient embryonic stem cell population. Hypoxia inducible factor (HIF)‐2α is associated with neural crest stem cell appearance and aggressiveness in tumors.
Camilla U. Niklasson +7 more
semanticscholar +1 more source
eLife, 2022 Production and emigration of neural crest cells is a transient process followed by the emergence of the definitive roof plate. The mechanisms regulating the end of neural crest ontogeny are poorly understood. Whereas early crest development is stimulated
Dina Rekler, Chaya Kalcheim
doaj +1 more source
Physiological Plasticity of Neural-Crest-Derived Stem Cells in the Adult Mammalian Carotid Body [PDF]
, 2017 Adult stem cell plasticity, or the ability of somatic stem cells to cross boundaries and differentiate into unrelated cell types, has been amatter of debate in the last decade.
Annese, Valentina +3 more
core +2 more sources
Buildings, 2022 The vibration limit is an essential prerequisite for building vibration serviceability assessment, and various biological/environmental factors affect it deeply.
Lei Cao, Jun Chen
doaj +1 more source
A second order analytical solution of focused wave group interacting with a vertical wall
International Journal of Naval Architecture and Ocean Engineering, 2017 The interaction of focused wave groups with a vertical wall is investigated based on the second order potential theory. The NewWave theory, which represents the most probable surface elevation under a large crest, is adopted.
Yonggang Sun, Xiantao Zhang
doaj +1 more source