Results 31 to 40 of about 948,157 (255)

On ω-essential mappings onto manifolds [PDF]

open access: yesFundamenta Mathematicae, 1991
Essential mappings have played an important role in homotopy theory as well as in continua theory. A mapping \(f: X\to M\) from a compactum into a manifold is said to be essential provided every admissible deformation of \(f\) is surjective, while a mapping \(f: X\to M\) is said to be \(\omega\)- essential provided that \(f\times \hbox{id}_ k: X\times ...
openaire   +1 more source

Properties of Poincaré half-maps for planar linear systems and some direct applications to periodic orbits of piecewise systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
This paper deals with fundamental properties of Poincaré half-maps defined on a straight line for planar linear systems. Concretely, we focus on the analyticity of the Poincaré half-maps, their series expansions (Taylor and Newton–Puiseux) at the ...
Victoriano Carmona   +3 more
doaj   +1 more source

Coincidence classes in nonorientable manifolds

open access: yesFixed Point Theory and Applications, 2006
We study Nielsen coincidence theory for maps between manifolds of same dimension regardless of orientation. We use the definition of semi-index of a class, review the definition of defective classes, and study the occurrence of defective root classes. We
Daniel Vendrúscolo
doaj   +4 more sources

Essential Oils from Six Aromatic Plants of Langtang National Park: Insights on Their Chemical Constituents via GC-MS Analysis

open access: yesSeparations, 2023
The present work aims to provide an insight on the chemical constituents of essential oils obtained from six aromatic plants of the Langtang National Park (LNP), Nepal. LNP harbors an enriched biodiversity of medicinal and aromatic plants (MAPs).
Samjhana Pradhan   +3 more
doaj   +1 more source

Geometric transformation of cognitive maps for generalization across hippocampal-prefrontal circuits

open access: yesCell Reports, 2023
Summary: The ability to abstract information to guide decisions during navigation across changing environments is essential for adaptation and requires the integrity of the hippocampal-prefrontal circuitry.
Wenbo Tang   +2 more
doaj   +1 more source

Seed plant features, distribution patterns, diversity hotspots, and conservation gaps in Xinjiang, China

open access: yesNature Conservation, 2018
The flora in Xinjiang is unique. Decisions about biodiversity conservation and management based on seed plant diversity hotspots and conservation gaps in Xinjiang are essential to maintain this unique flora.
Jihong Huang   +8 more
doaj   +3 more sources

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Seismic risk quantification and GIS-based seismic risk maps for Dubai-UAE_Dataset

open access: yesData in Brief, 2021
The data provided in this article quantifies the potential seismic losses in multi-story buildings located in Dubai, UAE. Besides, it developed GIS-based seismic risk maps, which form essential inputs towards the seismic resilience of buildings.
Mohammad AlHamaydeh   +3 more
doaj   +1 more source

Essential Maps and Embeddings of Annuli in Nonorientable M 3 [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
In this note we give an example which shows that the existence of an essential map of an annulus in a nonorientable 3 3 ...
Daigle, R. J., Feustel, C. D.
openaire   +2 more sources

Health‐Related Social Needs in Children With Sickle Cell Disease Are Associated With Worse Health‐Related Quality of Life

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks   +5 more
wiley   +1 more source

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