Results 51 to 60 of about 222,693 (291)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

VERTICAL TRANSMISSION OF DENGUE INFECTION: THE FIRST PUTATIVE CASE REPORTED IN CHINA

Revista do Instituto de Medicina Tropical de São Paulo
SUMMARY Dengue is a systemic viral infection that is commonly transmitted between humans via mosquitoes. Other modes of transmission such as the vertical one are rare and have been infrequently reported in the literature.
Xueru YIN, Xiaozhu ZHONG, Shilei PAN
doaj   +1 more source

Determinants and trends in perinatal human immunodeficiency virus type 1 (HIV-1) transmission in the metropolitan area of Belo Horizonte, Brazil: 1998 - 2005

Memorias do Instituto Oswaldo Cruz, 2008
Significant decrease in human immunodeficiency virus type 1 (HIV-1) vertical transmission has been observed worldwide in centers where interventions such as antiretroviral therapy (ART), elective cesarean section, and avoidance of breastfeeding have been
Fabiana Maria Kakehasi, Jorge A Pinto, Roberta Maia de Castro Romanelli, Mariângela Carneiro, Carolina Silva Cardoso, Maria do Carmo Teatini Tavares, Victor Hugo Melo, Regina Amélia Lopes Pessoa de Aguiar   +7 more
doaj   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

A packet error recovery scheme for vertical handovers mobility management protocols [PDF]

, 2010
Mobile devices are connecting to the Internet through an increasingly heterogeneous network environment. This connectivity via multiple types of wireless networks allows the mobile devices to take advantage of the high speed and the low cost of wireless ...
Lacan, Jérôme, Petander, Henrik, Lochin, Emmanuel, Tournoux, Pierre Ugo, Tournoux, Pierre-Ugo   +4 more
core  

Vertical Transmission of Mycoplasma pneumoniae Infection [PDF]

Neonatology, 2018
<i>Mycoplasma pneumoniae</i> is a significant cause of pneumonia in school-aged children and young adults. We report a case of neonatal <i>M. pneumoniae</i> pneumonia in a preterm child manifesting in the first hours of life. Vertical transmission was demonstrated by the detection of <i>M.
Huber, Benedikt M, Meyer Sauteur, Patrick M, Unger, Wendy W J, Hasters, Paul, Eugster, Marcel R, Brandt, Simone, Bloemberg, Guido V, Natalucci, Giancarlo, Berger, Christoph   +8 more
openaire   +4 more sources

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel, Lara Kuhr, Khemais Barienti, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Marc C. Wurz   +6 more
wiley   +1 more source

VERTICAL TRANSMISSION OF HTLV-I/II: A review

Revista do Instituto de Medicina Tropical de São Paulo, 1998
The vertical transmission of the human T-cell lymphotropic virus type I (HTLV-I) occurs predominantly through breast-feeding. Since some bottle-fed children born to carrier mothers still remain seropositive with a frequency that varies from 3.3% to 12.8%,
Achiléa Lisboa BITTENCOURT
doaj   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Vertical transmission of Toxoplasma gondii in Australian marsupials

, 2009
To date, little is known about the dynamics of vertical transmission of Toxoplasma gondii in Australian marsupials. Studies in mice demonstrate that vertical transmission of T. gondii is common and that chronically infected mice can transmit T. gondii to
Parameswaran, N., Thompson, R.C.A., Grigg, M.E., O'Handley, R.M., Wayne, A.   +4 more
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