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Search Results: 1 - 10 of 1814 matches for " Lutero Koch;Wendland "
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Colpotomia no tratamento da gesta??o ectópica
Pinto, Heleodoro Corrêa;Jung, Lutero Koch;Wendland, Eliana;Heineck, Simone da Cunha;
Revista Brasileira de Ginecologia e Obstetrícia , 2012, DOI: 10.1590/S0100-72032012000300005
Abstract: purpose: to report the use of colpotomy for the treatment of ectopic pregnancies. methods: this was a retrospective cross-sectional study conducted on all women hospitalized with a clinical-laboratory suspicion of ectopic pregnancy who did not fulfill the criteria for drug treatment with methothrexate, during the period from february 2007 to august 2008. demographic variables, gynecologic history and characteristics associated with treatment were obtained by reviewing the medical records. results: eighteen women were included in the study. mean age was 27±5.2 years. all patients presented ruptured ectopic pregnancy and all were submitted to partial salpingectomy. surgical time ranged from 30 to 120 minutes (mean: 64.5 minutes) calculated from the moment when the patient entered the operating room to the moment when she left it. no patient presented postoperative infection. mean time of hospitalization was 40±14.3 hours. the medications used during the postoperative period were similar in all cases, being based on nonsteroid anti-inflammatory drugs, dipyrone, paracetamol and meperidine, as needed. the diet was reintroduced 8 hours after the end of surgery. conclusions: the use of colpotomy in the treatment of ectopic pregnancy showed good results, with the absence of important complications and a short hospitalization time. the basic surgical instruments needed for this procedure are relatively common to all hospitals, and the surgical technique is reproducible.
A Abordagem clínica das intera??es pais-bebê: perspectivas teóricas e metodológicas
Wendland, Jaqueline;
Psicologia: Reflex?o e Crítica , 2001, DOI: 10.1590/S0102-79722001000100004
Abstract: the influence of parent-infant interaction on social and affective child development has been the object of a significant number of studies in the past three decades. this paper focuses on the evolution of the studies in the parent-infant interaction's domain. this evolution is examined from a theoretical and methodological point of view, particularly in the clinical field. some research themes that seem to be promising in this domain are also highlighted.
A Abordagem clínica das intera es pais-bebê: perspectivas teóricas e metodológicas
Wendland Jaqueline
Psicologia: Reflex?o e Crítica , 2001,
Abstract: A influência das intera es pais-bebê no desenvolvimento social e afetivo infantil tem sido objeto de estudo de numerosos trabalhos nas últimas três décadas. Neste artigo, examina-se, de um ponto de vista teórico e metodológico, a evolu o dos estudos na área das intera es pais-bebês, particularmente no campo da clínica. Aponta-se também para os temas de pesquisa que têm se revelado promissores no estudo das intera es pais-bebê.
Consistency of Orbifold Conformal Field Theories on K3
Katrin Wendland
Physics , 2000,
Abstract: We explicitly determine the locations of G orbifold conformal field theories, G=Z_M, M=2,3,4,6, G=\hat D_n, n=4,5, or G the binary tetrahedral group \hat T, within the moduli space M^{K3} of N=(4,4) superconformal field theories associated to K3. This is achieved purely from the known description of the moduli space [AM94] and the requirement of a consistent embedding of orbifold conformal field theories within M^{K3}. We calculate the Kummer type lattices for all these orbifold limits. Our method allows an elementary derivation of the B-field values in direction of the exceptional divisors that arise from the orbifold procedure [Asp95,Dou97,BI97], without recourse to D-geometry. We show that our consistency requirement fixes these values uniquely and determine them explicitly. The relation of our results to the classical McKay correspondence is discussed.
Snapshots of Conformal Field Theory
Katrin Wendland
Mathematics , 2014,
Abstract: In snapshots, this exposition introduces conformal field theory, with a focus on those perspectives that are relevant for interpreting superconformal field theory by Calabi-Yau geometry. It includes a detailed discussion of the elliptic genus as an invariant which certain superconformal field theories share with the Calabi-Yau manifolds. K3 theories are (re)viewed as prime examples of superconformal field theories where geometric interpretations are known. A final snapshot addresses the K3-related Mathieu Moonshine phenomena, where a lead role is predicted for the chiral de Rham complex.
On Superconformal Field Theories Associated to Very Attractive Quartics
Katrin Wendland
Mathematics , 2003,
Abstract: We study N=(4,4) superconformal field theories with left and right central charge c=6 which allow geometric interpretations on specific quartic hypersurfaces in CP^3. Namely, we recall the proof that the Gepner model (2)^4 admits a geometric interpretation on the Fermat quartic and give an independent cross-check of this result, providing a link to the "mirror moonshine phenomenon" on K3. We clarify the role of Shioda-Inose structures in our proof and thereby generalize it: We introduce "very attractive quartics" and show how on each of them a superconformal field theory can be constructed explicitly.
A family of SCFTs hosting all "very attractive" relatives of the (2)^4 Gepner model
Katrin Wendland
Mathematics , 2005, DOI: 10.1088/1126-6708/2006/03/102
Abstract: This work gives a manual for constructing superconformal field theories associated to a family of smooth K3 surfaces. A direct method is not known, but a combination of orbifold techniques with a non-classical duality turns out to yield such models. A four parameter family of superconformal field theories associated to certain quartic K3 surfaces in CP^3 is obtained, four of whose complex structure parameters give the parameters within superconformal field theory. Standard orbifold techniques are used to construct these models, so on the level of superconformal field theory they are already well understood. All "very attractive" K3 surfaces belong to the family of quartics underlying these theories, that is all quartic hypersurfaces in CP^3 with maximal Picard number whose defining polynomial is given by the sum of two polynomials in two variables. A particular member of the family is the (2)^4 Gepner model, such that these theories can be viewed as complex structure deformations of (2)^4 in its geometric interpretation on the Fermat quartic.
Colouring of plane graphs with unique maximal colours on faces
Alex Wendland
Mathematics , 2014,
Abstract: The Four Colour Theorem asserts that the vertices of every plane graph can be properly coloured with four colors. Fabrici and G\"oring conjectured the following stronger statement to also hold: the vertices of every plane graph can be properly coloured with the numbers 1,...,4 in such a way that every face contains a unique vertex coloured with the maximal color appearing on that face. They proved that every plane graph has such a colouring with the numbers 1,...,6. We prove that every plane graph has such a colouring with the numbers 1,...,5 and we also prove the list variant of the statement for lists of sizes seven.
K3 en route From Geometry to Conformal Field Theory
Katrin Wendland
Mathematics , 2015,
Abstract: To pave the way for the journey from geometry to conformal field theory (CFT), these notes present the background for some basic CFT constructions from Calabi-Yau geometry. Topics include the complex and Kaehler geometry of Calabi-Yau manifolds and their classification in low dimensions. I furthermore discuss CFT constructions for the simplest known examples that are based in Calabi-Yau geometry, namely for the toroidal superconformal field theories and their Z2-orbifolds. En route from geometry to CFT, I offer a discussion of K3 surfaces as the simplest class of Calabi-Yau manifolds where non-linear sigma model constructions bear mysteries to the very day. The elliptic genus in CFT and in geometry is recalled as an instructional piece of evidence in favor of a deep connection between geometry and conformal field theory.
Orbifold Constructions of K3: A Link between Conformal Field Theory and Geometry
Katrin Wendland
Mathematics , 2001,
Abstract: We discuss geometric aspects of orbifold conformal field theories in the moduli space of N=(4,4) superconformal field theories with central charge c=6. Part of this note consists of a summary of our earlier results on the location of these theories within the moduli space [NW01,Wen] and the action of a specific version of mirror symmetry on them [NW]. We argue that these results allow for a direct translation from geometric to conformal field theoretic data. Additionally, this work contains a detailed discussion of an example which allows the application of various versions of mirror symmetry on K3. We show that all of them agree in that point of the moduli space.
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