نتایج جستجو برای: all t
تعداد نتایج: 2449607 فیلتر نتایج به سال:
The Notch signaling pathway is an evolutionarily conserved cell signaling system present in most multicellular organisms, as it controls cell fate specification by regulating cell proliferation, differentiation, apoptosis, and survival. Regulation of the Notch signaling pathway can be achieved at multiple levels. Notch proteins are involved in lineage fate decisions in a variety of tissues in v...
Effects of ultrasound on maternal-fetal bonding: a comparison of two- and three-dimensional imaging.
OBJECTIVES The purpose of this study was to evaluate the effect of two-dimensional (2DUS) compared to three-dimensional ultrasound (3DUS) imaging on the maternal-fetal bonding process. METHODS Fifty mothers who had 2DUS and 50 who had 2DUS and 3DUS were included in the study. A postpartum survey by telephone interview was carried out to assess maternal-fetal bonding. Bonding was evaluated by ...
A t-(n, k, λ) design over Fq is a collection of k-dimensional subspaces of Fq , called blocks, such that each t-dimensional subspace of Fq is contained in exactly λ blocks. Such t-designs over Fq are the q-analogs of conventional combinatorial designs. Nontrivial t-(n, k, λ) designs over Fq are currently known to exist only for t 6 3. Herein, we prove that simple (meaning, without repeated bloc...
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