Results 81 to 90 of about 16,824,350 (311)

The problem of first integral of nonholonomic systems

open access: yesVietnam Journal of Mechanics, 2001
In this paper, the problem of first integrals of a nonholonomic system is discussed. The aim of this work is concentra.ted on finding the condition for existence of first integrals.
Do Sanh
doaj   +1 more source

Programming First Integral Method General Formula for the Solving Linear and Nonlinear Equations

open access: yes, 2015
It’s well known that the solution of equations always uses complicated methods. In this paper the first integral method is used to find the actual solution of equations in a simple way, rather than the ex-complicated ways.
Mohamed A. Abdoon
semanticscholar   +1 more source

Sheaves associated to holomorphic first integrals [PDF]

open access: yesAnnales de l'Institut Fourier, 2000
Let ℱ : L → T S be a foliation on a complex, smooth and irreducible projective ...
openaire   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider   +15 more
wiley   +1 more source

The Fundamental Theorem on Quadratic First Integrals

open access: yesProceedings of the National Academy of Sciences, 1946
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Phase Angle as an Early Functional Biomarker of Cancer‐Related Fatigue in Pediatric Oncology: A Prospective Longitudinal Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric cancer remains a leading cause of morbidity and mortality worldwide, particularly in low‐and middle‐income countries. Cancer treatment may impair nutritional status, alter body composition, and exacerbate cancer‐related fatigue (CRF).
Luís Carlos Lopes‐Junior   +11 more
wiley   +1 more source

A sharp double inequality involving generalized complete elliptic integral of the first kind

open access: yes, 2020
In the article, we establish a sharp double inequality involving the ratio of generalized complete elliptic integrals of the first kind, which is the improvement and generalization of some previously known results.
Tie-hong Zhao, Miao-Kun Wang, Y. Chu
semanticscholar   +1 more source

Polynomial First Integrals of Quadratic Systems

open access: yesRocky Mountain Journal of Mathematics, 2001
The paper contains a classification and the topological phase portraits of all quadratic systems having minimal polynomial first integrals of degree at most 4. The authors prove the existence of minimal polynomial first integrals of any degree for quadratic systems and show that such systems having more than three invariant straight lines have no ...
Llibre, Jaume, Zhang, Xiang
openaire   +2 more sources

The Future of Pediatric Hematology‐Oncology Fellowship Training: Reflections on the American Board of Pediatrics Training Model

open access: yes
Pediatric Blood &Cancer, EarlyView.
Scott C. Borinstein   +11 more
wiley   +1 more source

Animal‐Assisted Activities With Therapy Dogs in Pediatric Oncology: A Multicenter Survey of the Current Status, Implementation, and Challenges in Germany, Austria, and Switzerland

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Animal‐assisted activities (AAAs) with therapy dogs have shown positive effects on patient well‐being and quality of life in various areas of medicine, including pediatric oncology. However, research on this topic is limited. The aim of this study is to present the current status of AAA in pediatric oncology in Germany, Austria, and
Jan‐Marius Wedig   +7 more
wiley   +1 more source

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