Derivation
Mostrando 1-12 de 505 artigos, teses e dissertações.
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1. Derivation and validation of a national multicenter mortality risk stratification model - the ExCare model: a study protocol
Abstract Introduction Surgical care is essential for proper management of various diseases. However, it can result in unfavorable outcomes. In order to identify patients at higher risk of complications, several risk stratification models have been developed. Ideally, these tools should be simple, reproducible, accurate, and externally validated. Unfortunate
Brazilian Journal of Anesthesiology. Publicado em: 2022
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2. Louis de Broglie's wave-particle duality: from textbooks’ blackboxes to a chain of reference presentation
Abstract We discuss the proposition of wave-particle duality made by Louis de Broglie in the period of 1922-1924 as well as the narratives of undergraduate Physics textbooks that introduce this topic. After a brief discussion on the nature of scientific reality, we point out the main theories, assumptions and techniques adopted by de Broglie to achieve the r
Rev. Bras. Ensino Fís.. Publicado em: 13/01/2020
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3. Effects of anti-TNF-α in experimental diversion colitis
Abstract Purpose: To evaluate the effects of infliximab on the inflammation of the colonic mucosa devoid from fecal stream. Methods: Twenty-four rats were submitted to a Hartmann's procedure. They remained for 12 weeks with the fecal derivation to development of diversion colitis on excluded colorectal stump. After this period, they were divided into 3 gro
Acta Cir. Bras.. Publicado em: 13/12/2019
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4. Exact and inexact differentials in the early development of mechanics and thermodynamics
Abstract We give an account and a critical analysis of the use of exact and inexact differentials in the early development of mechanics and thermodynamics, and the emergence of differential calculus and how it was applied to solve some mechanical problems, such as those related to the cycloidal pendulum. The Lagrange equations of motions are presented in the
Rev. Bras. Ensino Fís.. Publicado em: 02/12/2019
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5. Partículas de Final de Sentença (PFS): uma análise cartográfica por fases sobre o sistema da língua Tenetehára
Resumo O objetivo deste artigo é analisar a distribuição das Partículas de Final de Sentença (PFS) em Tenetehára, as quais compõem um conjunto de itens funcionais que ocorrem em uma posição sintática rígida em posição sentencial final. A ordem das PFS nesta língua pode ser formalmente capturada se for considerada uma única estrutura de base, a
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 02/12/2019
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6. Analysis of macrophage subtypes and annexin A1 expression in lesions of patients with cutaneous leishmaniasis
Abstract INTRODUCTION: Cutaneous leishmaniasis is caused by protozoa of the genus Leishmania and transmission occurs through the bite of sandflies. It is an infectious disease, which affects skin and mucosa. The aim was to quantify the macrophages M1 and M2 and the annexin A1 expression in the skin lesions of patients with cutaneous leishmaniasis. METHODS
Rev. Soc. Bras. Med. Trop.. Publicado em: 02/12/2019
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7. Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
Resumo Este trabalho investiga a influência do número de pavimentos no limite α1 do parâmetro de instabilidade de edifícios contraventados por pórticos de concreto armado; trata-se da seqüência de uma linha de estudos, na qual esta mesma questão foi investigada em edifícios contraventados por paredes e/ou núcleos. Inicialmente, mostra-se como a AB
Rev. IBRACON Estrut. Mater.. Publicado em: 11/11/2019
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8. HYBRID ATOMIC ORBITALS IN ORGANIC CHEMISTRY. PART 1: CRITIQUE OF FORMAL ASPECTS
The importance of hybrid atomic orbitals, both historically and mathematically, is reviewed. Our new analysis of the original derivation of the sp3, sp2, sp model reveals serious errors. Based on a critical survey of the literature, we submit six formal criteria that deprecate the use of hybrid orbitals in a pedagogical context. A sound mathematical basis of
Quím. Nova. Publicado em: 26/08/2019
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9. An Easy and Reliable Way to Prevent Electrocardiographic Deteriorations of Patients Undergoing Off-Pump Coronary Artery Bypass Surgery: Preoperative Anxiolytic Treatment
Abstract Objective: To investigate the effects of preoperative anxiety relieving on electrophysiological changes in patients undergoing off-pump coronary artery bypass surgery. Methods: A total of 61 patients at ASA III risk group in the age range of 18-65 years were enrolled in the present study. Patients were randomly divided into two groups. Group S (Se
Braz. J. Cardiovasc. Surg.. Publicado em: 22/07/2019
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10. Improved finite element of a transversely cracked straight beam with an additional degree of freedom
Abstract A new finite element with an additional degree of freedom at the crack location is derived for static bending analysis of a transversely cracked uniform slender beam. In the simplified computational model, which is based on Euler-Bernoulli's theory of small displacements, the crack is represented by a linear rotational spring connecting two elastic
Lat. Am. j. solids struct.. Publicado em: 27/06/2019
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11. Moderate-intensity exercise allows enhanced protection against oxidative stress-induced cardiac dysfunction in spontaneously hypertensive rats
The progression of myocardial injury secondary to hypertension is a complex process related to a series of physiological and molecular factors including oxidative stress. This study aimed to investigate whether moderate-intensity exercise (MIE) could improve cardiac function and oxidative stress in spontaneously hypertensive rats (SHRs). Eight-week-old male
Braz J Med Biol Res. Publicado em: 16/05/2019
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12. Dry matter production and chemical composition of tropical forage legumes under different shading levels
ABSTRACT. This study aimed to evaluate the shading influence on production and qualitative traits of four tropical forage legumes (calopo, puero, archer and perennial soybean). Legumes were cultivated under levels of artificial shading (0; 30; 50 and 70%) from January 2006 to June 2007. Dry matter production (DM), crude protein (CP), neutral detergent fiber
Acta Sci., Anim. Sci.. Publicado em: 29/04/2019