Results 31 to 40 of about 53,376 (186)

S100β Levels in CSF of Nonambulatory Dogs with Intervertebral Disk Disease Treated with Electroacupuncture

Journal of Veterinary Medicine, Volume 2013, Issue 1, 2013., 2013
The aim of the study was to investigate S100β levels in the cerebrospinal fluid of nonambulatory dogs with intervertebral disk disease treated with electroacupuncture: 10 dogs with thoracolumbar disk extrusion graded 3 to 5 (EA group) and 7 dogs without neurologic dysfunction (control group). All dogs regained ambulation.
Ayne Murata Hayashi, Ana Carolina Brandão Campos Fonseca Pinto, Silvia Renata Gaido Cortopassi, Valdecir Marvulle, Jessica Ruivo Maximino, Gerson Chadi, Julia Maria Matera, Antonio Ortega-Pacheco   +7 more
wiley   +1 more source

Stochastic Dynamic Programming Applied to Hydrothermal Power Systems Operation Planning Based on the Convex Hull Algorithm

Mathematical Problems in Engineering, Volume 2010, Issue 1, 2010., 2010
This paper presents a new approach for the expected cost‐to‐go functions modeling used in the stochastic dynamic programming (SDP) algorithm. The SDP technique is applied to the long‐term operation planning of electrical power systems. Using state space discretization, the Convex Hull algorithm is used for constructing a series of hyperplanes that ...
Bruno H. Dias, André L. M. Marcato, Reinaldo C. Souza, Murilo P. Soares, Ivo C. Silva Junior, Edimar J. de Oliveira, Rafael B. S. Brandi, Tales P. Ramos, Joaquim J. Júdice   +8 more
wiley   +1 more source

Bifurcation Analysis of a Van der Pol‐Duffing Circuit with Parallel Resistor

Mathematical Problems in Engineering, Volume 2009, Issue 1, 2009., 2009
We study the local codimension one, two, and three bifurcations which occur in a recently proposed Van der Pol‐Duffing circuit (ADVP) with parallel resistor, which is an extension of the classical Chua′s circuit with cubic nonlinearity. The ADVP system presents a very rich dynamical behavior, ranging from stable equilibrium points to periodic and even ...
Denis de Carvalho Braga, Luis Fernando Mello, Marcelo Messias, Dane Quinn   +3 more
wiley   +1 more source

As velhas e as novas multinacionais: o caso da energia

Brazilian Journal of Political Economy
RESUMO As teorias atuais sobre corporações multinacionais (MNCs) e transferência de tecnologia alcançaram vários resultados! grandes avanços. Eles são resumidos esquematicamente neste trabalho como a “síntese teórica estabelecida”, resultante da ...
JORGE NIOSI, PHILIPPE FAUCHER
doaj   +1 more source

Voltage collapse in power systems: Dynamical studies from a static formulation

Mathematical Problems in Engineering, Volume 2006, Issue 1, 2006., 2006
This paper addresses the problem of voltage collapse in power systems. More precisely, we exhibit a voltage collapse in a power system with two buses. This study is carried out with the help of two approaches. The first is a dynamical approach where a saddle‐node bifurcation is analyzed and the second is an algebraic approach. Both approaches deal with
Luis Fernando Mello, Antonio Carlos Zambroni de Souza, Gerson Hiroshi Yoshinari, Camila Vasconcelos Schneider   +3 more
wiley   +1 more source

Climatology and Environmental Controls of Intense Wind Gusts in the Brazilian Amazon

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Investigating Amazonian intense wind gusts and their environments is essential to better understand the drivers and impacts of severe convection that can reshape forest structure, increase tree mortality, and threaten ecosystems and communities. This study presents the first multi‐decadal (2000–2024) assessment of intense convective wind gusts
Vanessa Ferreira, Letícia Oliveira dos Santos, Mauricio Ilha de Oliveira, Ernani de Lima Nascimento, Anja Rammig   +4 more
wiley   +1 more source

Gill evolution in Neotropical electric fishes: Comparative phylogenetic evidence for hypoxia‐driven adaptation

Functional Ecology, Volume 39, Issue 8, Page 1940-1956, August 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Tropical freshwater fishes are often exposed to hypoxia, which limits aerobic metabolism and drives the evolution of diverse physiological, behavioural and morphological adaptations.
William G. R. Crampton, Leilani B. Pathak, Francesco H. Janzen, Joseph C. Waddell, Nathan R. Lovejoy   +4 more
wiley   +1 more source

A contratação de energia de reserva no atual modelo do setor elétrico brasileiro: da teoria à prática [PDF]

, 2009
Este artigo busca evidenciar elementos presentes no Setor Elétrico Brasileiro (SEB) que motivam a adoção do instrumento da contratação de energia de reserva pelo Poder Concedente, como medida para garantir a continuidade do fornecimento de energia ...
Almeida, Luís Henrique Bassi, Camargo, Ivan Marques de Toledo   +1 more
core  

Time Series Forecasting of Natural Inflow in Hydroelectric Power Plants Using Hyper‐Tuned Temporal Fusion Transformer With Hodrick–Prescott Filter

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
Time series forecasting of natural inflow in hydroelectric power plants using hypertuned temporal fusion transformer with Hodrick–Prescott filter for signal denoising. ABSTRACT The scheduling of the operation of the electricity system in Brazil is based on multi‐criteria optimization that takes into account the forecast of the level of the dams of the ...
Rafael Ninno Muniz, William Gouvêa Buratto, Ademir Nied, Rodolfo Cardoso, Erlon Cristian Finardi, Gabriel Villarrubia Gonzalez   +5 more
wiley   +1 more source

Transient Voltage Stability: A Review of Practical Criteria and Assessment Indices

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper delves into the concept of transient voltage stability, and analyzes global practical criteria to summarize a more adaptable three‐stage criterion. It also classifies and summarizes existing transient voltage stability assessment indices and highlights three key aspects in the future research of the indices.
Zherun Dong, Hao Wu, Yuchen Liu, Chenying Jiang, Shiying Ma, Libo Zhang, Haoyue Gong   +6 more
wiley   +1 more source