Results 31 to 40 of about 313,820 (353)
ACE: Architecture, City and Environment, 2012 Las características del territorio metropolitano actual, producto de la combinación de una estructura física intrincada y un proceso de ocupación largo y complejo, junto con las perspectivas de evolución futura de las demandas de espacio para residencia y actividad económica, han planteado una serie de retos que son los que primordialmente tiene que ...
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Biology Open, 2021 The blastula Chordin- and Noggin-expressing (BCNE) center comprises animal-dorsal and marginal-dorsal cells of the amphibian blastula and contains the precursors of the brain and the gastrula organizer.
Aitana M. Castro Colabianchi +5 more
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Band Topology and Linking Structure of Nodal Line Semimetals with Z_{2} Monopole Charges. [PDF]
Physical Review Letters, 2018 We study the band topology and the associated linking structure of topological semimetals with nodal lines carrying Z_{2} monopole charges, which can be realized in three-dimensional systems invariant under the combination of inversion P and time ...
J. Ahn +3 more
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Ferromagnetic hybrid nodal loop and switchable type-I and type-II Weyl fermions in two dimensions [PDF]
Physical review B, 2020 As a novel type of fermionic state, the hybrid nodal loop with the coexistence of both type-I and type-II band crossings has attracted intense research interest. However, it remains a challenge to realize the hybrid nodal loop in both two-dimensional (2D)
Tingli He +6 more
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Cold Spring Harbor Perspectives in Biology, 2009 Nodal signals belong to the TGF-beta superfamily and are essential for the induction of mesoderm and endoderm and the determination of the left-right axis. Nodal signals can act as morphogens-they have concentration-dependent effects and can act at a distance from their source of production.
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Significance of nodal dissection and nodal positivity in gastric cancer [PDF]
Translational Gastroenterology and Hepatology, 2020 Lymphadenectomy is a central component of surgery for gastric cancer. However, controversies over the optimal extent of lymphadenectomy in gastric cancer surgery have persisted for several decades. In Eastern countries where the incidence of gastric cancer is high, surgeons have performed extensive lymphadenectomy (D2 lymphadenectomy) with low ...
Yue Xin Zhang, Kun Yang
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Topological nodal line semimetals with and without spin-orbital coupling [PDF]
, 2015 lines in the Brillouin zone. We propose two different classes of symmetry protected nodal lines in the absence and in the presence of spin-orbital coupling (SOC), respectively.
C. Fang, Yige Chen, H. Kee, L. Fu
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Symmetry-protected nodal phases in non-Hermitian systems [PDF]
Physical review B, 2018 Symmetry plays a paramount role for the classification of phases of matter occurring in nature. Combining symmetry analysis with concepts from topology that allow us to identify global and robust physical properties, new phases of quantum matter, such as
J. C. Budich +3 more
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Nodal staging score and adequacy of nodal staging
OncoTargets and Therapy, 2019 The number of lymph nodes (LNs) excised in patients with pathologic N0 is limited, and it is very likely that there will be recessive node disease after surgery, so they are at risk of understaging. The purpose of the present study is to develop a nodal staging score (NSS) in a mathematical way to assess the likelihood that a pathologic N0 gastric ...
Hui-Min Chen, Ge Feng
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eLife, 2019 During embryonic development, diffusible signaling molecules called morphogens are thought to determine cell fates in a concentration-dependent way.
Idse Heemskerk +6 more
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