Results 21 to 30 of about 943 (169)
Crop Science, Volume 58, Issue 4, Page 1492-1507, July–August 2018., 2018 Maize (Zea mays L.) yield in sub‐Saharan Africa (SSA) is low because of both abiotic and biotic constraints, and limited availability or use of improved seed in some areas. This study was conducted (i) to estimate combining ability and heterosis among seven stress‐tolerant populations, and (ii) to assess diversity among the populations and the ...
Dan Makumbi +6 more
wiley +1 more source
Luxación del cristalino: etiología y resultados [PDF]
Archivos de la Sociedad Española de Oftalmología, 2006 Objetivo: Evaluar las indicaciones, resultados funcionales y complicaciones de la cirugía de vitrectomía pars plana (VPP), en el manejo de la luxación a cámara vítrea del cristalino. Métodos: Se han revisado 86 ojos de 83 pacientes con una media de edad de 68 años (rango 12-90 años) tratados mediante VPP de luxación posterior del cristalino que se han ...
González-Castaño, C. +2 more
openaire +3 more sources
Carbon accumulation in Amazonian floodplain lakes: A significant component of Amazon budgets?
Limnology and Oceanography Letters, Volume 2, Issue 1, Page 29-35, February 2017., 2017 Abstract The Amazon floodplains cover approximately 10% of the Amazon Basin and are composed of predominantly anoxic sediments that may store large amounts of carbon. Our study combines 210Pb derived sedimentation rates from four recently analyzed sediment cores (n = 4) with previously published organic carbon (OC) burial estimates (n = 18) to provide ...
Luciana M. Sanders +8 more
wiley +1 more source
Experimento para modelar a acomodação do olho humano
Revista Brasileira de Ensino de FísicaResumo Construímos um sistema simples e barato que simula o processo de acomodação do olho humano. Utilizou-se uma lente bola flexível, feita de preservativo masculino de látex cheio de água, e dois lasers de diodo, que podem passar da condição de ...
Gustavo Trierveiler, Julio Flemming
doaj +1 more source
Opuntia spp.: Characterization and Benefits in Chronic Diseases
Oxidative Medicine and Cellular Longevity, Volume 2017, Issue 1, 2017., 2017 Opuntia species have been used for centuries as food resources and in traditional folk medicine for their nutritional properties and their benefit in chronic diseases, particularly diabetes, obesity, cardiovascular diseases, and cancer. These plants are largely distributed in America, Africa, and the Mediterranean basin. Opuntia spp.
María del Socorro Santos Díaz +5 more
wiley +1 more source
International Scholarly Research Notices, Volume 2014, Issue 1, 2014., 2014 The Negro and Solimoes rivers join in front of the Brazilian city of Manaus to form the Amazon River. This “meeting of the waters” is a natural phenomenon of great aesthetic beauty that has been the focus of attention of researchers all over the world in various scientific fields.
Alexandre Beluco +2 more
wiley +1 more source
Alterações morfológicas de plântulas de trigo, azevém e nabo quando em competição nos estádios iniciais de crescimento [PDF]
Planta Daninha, 2015 Alterações na qualidade da radiação luminosa causadas pela presença de "plantas vizinhas" podem desencadear uma série de respostas morfológicas das espécies de interesse.
F.P. LAMEGO +5 more
doaj +2 more sources
Conduta cirúrgica na subluxação do cristalino [PDF]
Arquivos Brasileiros de Oftalmologia, 2004 OBJETIVO: Apresentar 10 casos de subluxacao de cristalino, secundarios a trauma ou a sindrome de Marfan, discutindo o tratamento e os resultados obtidos. METODOS: Foram estudados 10 olhos de 9 pacientes, 6 casos secundarios a trauma contuso e 4 casos a sindrome de Marfan.
Severo, Nórton Souto +2 more
openaire +3 more sources
New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.The study of Neotropical Apicotermitinae remains challenging due to the large number of undescribed taxa (Linnean shortfall) as well as the scarcity of distributional data (Wallacean shortfall). Despite recent efforts to reduce the first one, the second remains an even more significant challenge.
Camila C. Mellado +10 more
wiley +1 more source
Environmental DNA, Volume 8, Issue 3, May–June 2026.The community structure of photosynthetic planktonic microeukaryotes in the floodplain lakes of the Tocantins‐Araguaia River basin is influenced by a combination of environmental filters and spatial processes. Phylogenetic information from this community highlights the importance of conserving less degraded areas to preserve the evolutionary diversity ...
Jocilaine Santos de Jesus +8 more
wiley +1 more source