Results 11 to 20 of about 5,102 (208)

Intrastromal misplacement of a foldable IOL during phacoemulsification: Intraoperative OCT identification of type-1 dua's layer separation

American Journal of Ophthalmology Case Reports
Background: Intrastromal misplacement of a foldable intraocular lens (IOL) during cataract surgery is exceedingly rare. Immediate identification of the separation plane is critical to prevent additional corneal injury.
Haruka Ueda, Akira Kobayashi, Natsuko Mori, Hideaki Yokogawa, Tomomi Higashide   +4 more
doaj   +2 more sources

Evaluation of two semi-analytical techniques in air quality applications Avaliação de duas técnicas semi-analíticas em aplicações na qualidade do ar [PDF]

Revista Brasileira de Meteorologia, 2007
In this article an evaluation of two semi-analytical techniques is carried out, considering the quality and accuracy of these techniques in reproducing the ground-level concentration values of passive pollutant released from low and high sources.
Jonas C. Carvalho, Davidson M. Moreira
doaj   +2 more sources

The pre-Descemet's layer (Dua's layer, also known as the Dua-Fine layer and the pre-posterior limiting lamina layer): Discovery, characterisation, clinical and surgical applications, and the controversy

Progress in Retinal and Eye Research, 2023
La capa pre-Descemet/capa de Dua, también denominada capa Dua-Fina y la capa de lámina limitante preposterior, se encuentra anterior a la membrana de Descemet en la córnea, tiene un espesor de 10 μm (rango 6-16), hecho predominantemente de tipo I y algo de colágeno tipo VI con abundante elastina, más que cualquier otra capa de la córnea. Tiene una alta
Harminder S. Dua, Rui Freitas, Imran Mohammed, Darren S. J. Ting, Dalia G. Said   +4 more
openaire   +2 more sources

Deep anterior lamellar keratoplasty—triple procedure: a useful clinical application of the pre-Descemet’s layer (Dua’s layer) [PDF]

Eye, 2014
To describe a technique which exploits the transparency and toughness of the pre-Descemets layer (Dua's layer) to safely perform deep anterior lamellar keratoplasty (DALK) and phacoemulsification at the same time.Three DALK procedures combined with phacoemulsification were performed by the same surgeon using the big-bubble (BB) technique at the ...
A A, Zaki, M S, Elalfy, D G, Said, H S, Dua   +3 more
openaire   +2 more sources

Seven‐day storage of pneumatically dissected Descemet's endothelial grafts with and without Dua's layer [PDF]

Acta Ophthalmologica, 2015
AbstractPurposeTo evaluate the efficacy of big‐bubble (BB) technique in separating Dua's layer together with the Descemet's membrane endothelial (DE) graft and the effect of 7‐day storage of the prepared tissues on the endothelial cells.MethodThis is an experimental study in which 21 human corneo‐scleral tissues unsuitable for transplantation were used.
Sherif A, GamalElDin, Marwa M, Salama, Malak I, ElShazly   +2 more
openaire   +2 more sources

Demonstration of cornea Dua′s layer at a deep anterior lamellar keratoplasty surgery

Oman Journal of Ophthalmology, 2016
The authors aimed to present a deep anterior lamellar keratoplasty (DALK) surgery case with mixed type bubble demonstrating Dua's layer (DL). This was a reported case of DALK surgery. The authors encountered cornea DL structure at DALK surgery while cleaning the remaining stromal pieces. We also observed perforation in the central part of DL.
Yusuf Kocluk, Ayse Burcu, Emine Alyamac Sukgen   +2 more
openaire   +3 more sources

Microsporogênese e etapas da ontogenia do gametófito masculino de Tabebuia ochracea (Cham.) Standley (Bignoniaceae) Microsporogenesis and the early male gametophyte development of Tabebuia ochraceae (Cham.) Standley (Bignoniaceae)

Acta Botânica Brasílica, 1996
Foram analisadas as etapas da ontogenia do gametófito masculino e da parede da antera de Tabebuia ochracea. O método de formação da parede do microsporângio é do tipo Dicotiledôneo.
Nelson S. Bittencourt Jr
doaj   +1 more source

Variabilidade espacial e temporal da resistência mecânica do solo à penetração em áreas com e sem manejo químico localizado Spatial and temporal variability of the soil mechanical resistance to penetration in areas with and without site-specific chemical application

Revista Brasileira de Ciência do Solo, 2003
O objetivo deste trabalho foi avaliar o comportamento das variabilidades (espacial e temporal) por meio da técnica de escalonamento de semivariogramas, da variável resistência mecânica do solo à penetração (RMSP) nas camadas de 0-0,1, 0,1-0,2, 0,2-0,3 m,
E. Mercante, M. A. Uribe-Opazo, E. G. Souza   +2 more
doaj   +1 more source

Variabilidade espacial da textura de um Argissolo Vermelho Amarelo sob cultivo de pastagem e vegetação nativa Spatial variability of the texture in a Red-Yellow Ultisol under pasture and nature vegetation crop

Ciência Rural, 2009
O conhecimento da variabilidade espacial dos atributos de um solo sob diferentes coberturas auxilia o estudo das alterações ocorridas em razão do manejo.
Julião Soares de Souza Lima, Marcos Antonio Sattler, Alexandre Cândido Xavier, Rone Batista de Oliveira, Renato Ribeiro Passos, Paulo César Oliveira   +5 more
doaj   +1 more source

Variabilidade em dez populações de Hemileia vastatrix em relação à germinação e ao comprimento do tubo germinativo em quatro temperaturas Variability in ten populations of Hemileia vastatrix for germination and germinative tube length under four temperatures

Ciência e Agrotecnologia, 2008
Neste trabalho, objetivou-se verificar o efeito da temperatura na germinação e no comprimento do tubo germinativo em diferentes populações de H. vastatrix (PHVs), sob quatro temperaturas.
Maria Eloisa Salustiano, Edson Ampélio Pozza, Antônio Carlos Ferraz Filho, Alex Oliveira Botelho, Eduardo Alves   +4 more
doaj   +1 more source