Results 81 to 90 of about 496,444 (387)

Wet and dry extremes reduce arthropod biomass independently of leaf phenology in the wet tropics

open access: yesGlobal Change Biology, Volume 29, Issue 2, Page 308-323, January 2023., 2023
Although two‐thirds of terrestrial vertebrates consume insects and spiders, how changing rainfall regimes will affect arthropods remains poorly understood. Using spatiotemporal variation in tropical montane climate as a natural experiment, we show arthropod biomass maxima at intermediate rainfall as 3 months of both wet and dry extremes reduced ...
Felicity L. Newell   +2 more
wiley   +1 more source

Descomposición de la materia orgánica como criterio en el manejo de sitio. Cuenca del río San Cristóbal, Santafé de Bogotá

open access: yesActa Biológica Colombiana, 1996
Se evaluó la descomposición individual e interactuada de Cupressus lusitanica, Quercus humboldtii; Macleania rupestris; Clusia grandiflora y Weinmannia tomentosa en bosque húmedo montano bajo (bh-MB), Cuenca del rio San Cristóbal, Santafé de Bogotá ...
Luis Matín Caballero Rueda   +1 more
doaj  

Carbohydrate moieties of N-cadherin from human melanoma cell lines [PDF]

open access: yes, 2002
Expression of N-cadherin an adhesion molecule of the cadherin family, in tumor cells is associated with their increased invasive potential. Many studies suggested the role of N-linked oligosaccharides as important factors that contribute to metastasis by
Ciołczyk-Wierzbicka, Dorota   +4 more
core   +1 more source

The NS3 protein of Rice hoja blanca tenuivirus suppresses RNA silencing in plant and insect hosts by efficiently binding both siRNAs and miRNAs.

open access: yesRNA: A publication of the RNA Society, 2007
RNA silencing plays a key role in antiviral defense as well as in developmental processes in plants and insects. Negative strand RNA viruses such as the plant virus Rice hoja blanca tenuivirus (RHBV) replicate in plants and in their insect transmission ...
Hans Hemmes   +4 more
semanticscholar   +1 more source

PRODUCTIVE BEHAVIOUR OF TWELVE THREELINEAL FORAGE CORN HYBRIDS IN A DRY TROPICAL REGION

open access: yesTropical and Subtropical Agroecosystems, 2018
Twelve threelineal corn hybrids and one commercial variety were evaluated at Ahuacatlán, Nayarit; distance between furrows was 75 cm and a seed every 15 cm. Fertilizer was applied at one dosagee of 160-60-00.
Marco Antonio Rivas Jacobo   +7 more
doaj  

Evidencias del origen de una posible nueva entidad de Dioscorea (Dioscoreaceae) de las Sierras de Calilegua, Jujuy (Argentina). Un enfoque morfo-anatómico

open access: yesLilloa, 2019
En las Sierras de Calilegua reconocimos siete especies de Dioscorea como parte de su flora y una octava entidad que denominamos Dioscorea sp., la cual evidenció algunos caracteres morfológicos similares a D. glomerulata y D.
Patricia N. Asesor   +2 more
doaj   +1 more source

Schmiedegerecht nitrierte Gesenke [PDF]

open access: yes, 2017
In order to resist the high loads, the surfaces and boundary areas of forging dies are nitrided. Up to now, there was no proven knowledge about, which processing parameters respectively which nitrided case leads to the best life time of the tools. In the
Hoja, Stefanie
core  

Valoración puzolánica de la hoja de la caña de azúcar

open access: yes, 2011
This paper presents the results of the evaluation of the sugarcane leaf, burnt under controlled conditions in order to obtain a reactive ash with pozzolanic properties.
A. Guzmán   +4 more
semanticscholar   +1 more source

Psychological effects on the family having children with asthma. [PDF]

open access: yes, 1996
Asthma is the most common chronic childhood disease which is defined as the chronic inflammatory disorder of the airways. The study deals with the problems of families having asthmatic children as well as about self-esteem in asthmatic children.
Enrich Hoja, Joan   +2 more
core  

Evaluación de la capacidad productiva de Pleurotus ostreatus con el uso de hoja de plátano (Musa paradisiaca L., cv. Roatan) deshidratada, en relación con otros sustratos agrícolas

open access: yes, 2010
El objetivo de este estudio fue evaluar la produccion de la cepa CP-50 de P. ostreatus en residuos de hoja de platano deshidratada en contraste con otros sustratos agricolas de desecho del Municipio de Tetela de Ocampo-Puebla.
O. Romero   +5 more
semanticscholar   +1 more source

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