Search results for "group"
showing 10 items of 19225 documents
CCDC 2074278: Experimental Crystal Structure Determination
2021
Related Article: Izar Capel Berdiell, Victor García-López, Mark J. Howard, Miguel Clemente-León, Malcolm A. Halcrow|2021|Dalton Trans.|50|7417|doi:10.1039/D1DT01076J
Food choices at lunch during the third year of life: high selection of animal and starchy foods but avoidance of vegetables
2007
Aim: The objective was to show patterns of food selection by 2- to 3-y-old children for a wide variety of foods in a self-service cafeteria and to assess the effect of individual variables (gender, BMI, mode of feeding after birth and rank in sibship). Methods: In a nursery self-service canteen, food choices at lunch made by children (n=418, 24–36 mo; 109 observations per child on average) were recorded by trained assistants who monitored portion size. An offer of eight dishes (animal products, starchy foods, combination dishes, vegetables and dairy products), excluding dessert-type foods, was proposed. Choice level was calculated for each food. Analysis of variance was used to compare choi…
P4730Underweight is associated with unfavourable short- and long-term outcomes after MitraClip therapy: a body mass index derived subgroup analysis o…
2019
Abstract Background Underweight and obesity represent classical risk factors for patients undergoing cardiac surgery or interventional treatment. The multicentre German Transcatheter Mitral Valve Interventions (TRAMI) registry comprises a large and prospectively enrolled real-world cohort of patients treated by MitraClip implantation. Aims The current analysis examines the impact of underweight, overweight and obesity on intra-hospital, short and long-term outcomes in patients treated by MitraClip therapy. Methods and results From 08/2010 until 07/2013, 799 patients (age 75.3±8.6 years, male gender 60.7%, median logistic EuroSCORE 20% [12; 31], functional mitral regurgitation (MR): 69.3%) w…
On presentations for mapping class groups of orientable surfaces via Poincaré's Polyhedron theorem and graphs of groups
2021
The mapping class group of an orientable surface with one boundary component, S, is isomorphic to a subgroup of the automorphism group of the fundamental group of S. We call these subgroups algebraic mapping class groups. An algebraic mapping class group acts on a space called ordered Auter space. We apply Poincaré's Polyhedron theorem to this action. We describe a decomposition of ordered Auter space. From these results, we deduce that the algebraic mapping class group of S is a quotient of the fundamental group of a graph of groups with, at most, two vertices and, at most, six edges. Vertex and edge groups of our graph of groups are mapping class groups of orientable surfaces with one, tw…
Biochemical Biomarkers and Neurodegenerative Diseases
2021
Neurodegenerative diseases (ND) are a heterogeneous group of disorders characterized by progressive dysfunction and loss of neurons in different areas of the central nervous system or peripheral nervous system [...]
„Wir wussten, dass es schwierig wird, doch damit haben wir nicht gerechnet!“ Erfahrungen beim Studieneinschluss von Krebspatient*innen mit Migrations…
2021
Zusammenfassung Hintergrund Der Prozess des Studieneinschlusses von Teilnehmenden ist ein wichtiger Bestandteil und oftmals aufwendiger Arbeitsschritt in wissenschaftlichen Forschungsprojekten. Aufgrund unterschiedlicher finanzieller, organisatorischer und ethischer Rahmenbedingungen stellt die fristgerechte Gewinnung von Teilnehmenden haufig eine Herausforderung dar. In diesem Beitrag berichten wir uber unsere Erfahrungen hinsichtlich des Studieneinschlusses, die wir im Projekt „Psychoonkologische Versorgung von Krebspatienten mit Migrationshintergrund – eine Mixed-Methods-Studie“ (POM) gemacht haben. Methode Die Gewinnung von Teilnehmenden erfolgte uber ambulante hamato-onkologische Schwe…
The average element order and the number of conjugacy classes of finite groups
2021
Abstract Let o ( G ) be the average order of the elements of G, where G is a finite group. We show that there is no polynomial lower bound for o ( G ) in terms of o ( N ) , where N ⊴ G , even when G is a prime-power order group and N is abelian. This gives a negative answer to a question of A. Jaikin-Zapirain.
Machine $B_4$
2020
We construct map $\xi$. It exhibits dense orbits for all $x\in\overline{0,1}^\omega$. We give elementary proofs for all statements.
The proof of Birman’s conjecture on singular braid monoids
2003
Let B_n be the Artin braid group on n strings with standard generators sigma_1, ..., sigma_{n-1}, and let SB_n be the singular braid monoid with generators sigma_1^{+-1}, ..., sigma_{n-1}^{+-1}, tau_1, ..., tau_{n-1}. The desingularization map is the multiplicative homomorphism eta: SB_n --> Z[B_n] defined by eta(sigma_i^{+-1}) =_i^{+-1} and eta(tau_i) = sigma_i - sigma_i^{-1}, for 1 <= i <= n-1. The purpose of the present paper is to prove Birman's conjecture, namely, that the desingularization map eta is injective.
Automorphisms of 2–dimensional right-angled Artin groups
2007
We study the outer automorphism group of a right-angled Artin group AA in the case where the defining graph A is connected and triangle-free. We give an algebraic description of Out.AA/ in terms of maximal join subgraphs in A and prove that the Tits’ alternative holds for Out.AA/. We construct an analogue of outer space for Out.AA/ and prove that it is finite dimensional, contractible, and has a proper action of Out.AA/. We show that Out.AA/ has finite virtual cohomological dimension, give upper and lower bounds on this dimension and construct a spine for outer space realizing the most general upper bound. 20F36; 20F65, 20F28