Results 131 to 140 of about 1,558,738 (237)

Ring transformations in reactions of pyrimidine and N-alkylpyrimidinium salts with nucleophile [PDF]

Paper IOn treatment with liquid ammonia at -33°C, the quaternary pyrimidinium salts, i.e. 1-methylpyrimidinium methyl sulfate, 1,2-dimethylpyrimidinium iodide, 1,4,6-trimethyl-pyrimidinium iodide and 1,2,4,6-tetramethylpyrimidinium iodide demethylate ...
Oostveen, E.A.
core   +1 more source

Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds

Journal of Seed Science
The aims of this study were to evaluate the influence of embryo adjacent tissues in water uptake and treatments to release dormancy in macaw palm seeds. To assess water absorption with or without the opercular tegument (OT), seeds were immersed in water ...
Ailton Gonçalves Rodrigues Junior, Túlio Gabriel Soares Oliveira, Patrícia Pereira de Souza, Leonardo Monteiro Ribeiro   +3 more
doaj  

Plant Biostimulants Enhance Bud Break in Vitis vinifera Crimson Seedless Using Combination Treatments

Horticulturae
The rest-breaking agent, hydrogen cyanamide (HC), can substitute insufficient chill unit accumulation in Vitis vinifera and induce uniform bud-break; however, due to its toxicity it is being banned.
Nicole C. Venter, Eunice Avenant, Theunis N. Kotze, Paul N. Hills, John P. Moore   +4 more
doaj   +1 more source

Utilización de compuestos orgánicos como activadores en el blanqueo de la lana con peróxido de hidrógeno a baja temperatura. [PDF]

, 1983
La adición de cianamida como activador de la descomposición del peróxido de hidrógeno en un baño de blanqueo conduce a lanas químicamente más atacadas que las blanqueadas en ausencia de este producto, según se ha deducido del contenido de ácido cisteico ...
Caro, Montserrat, Cegarra Sánchez, José, Gacén Guillén, Joaquín   +2 more
core  

Here's how we tamed Hydrogen Cyanamide! [PDF]

Chemical & Engineering News Archive, 1967
openaire   +1 more source

Publications of the exobiology program for 1979: A special bibliography [PDF]

A list of 1973 publications resulting from research pursued in exobiology is presented.
Devincenzi, D. L., Pleasant, L. G.
core   +1 more source

The 1st Symposium on Chemical Evolution and the Origin and Evolution of Life [PDF]

This symposium provided an opportunity for all NASA Exobiology principal investigators to present their most recent research in a scientific meeting forum.
Devincenzi, D. L., Pleasant, L. G.
core   +1 more source

Microwave Spectroscopic Identification of Atmospheric Contaminants Status Report, Apr. 1 - Sep. 30, 1966 [PDF]

Microwave spectroscopy used in identification of atmospheric trace ...
Jones, G. E.
core   +1 more source

Superação da dormência de cultivares de mirtileiro em ambiente protegido com cianamida hidrogenada e óleo mineral Dormancy breaking of blueberries cultivars in a protected environment with hydrogen cyanamide and mineral oil

Revista Brasileira de Fruticultura, 2011
O mirtileiro é uma frutífera de clima temperado que necessita de frio no outono/inverno. A insuficiência de frio pode provocar deficiente e desuniforme brotação e floração, com reflexos na produção. A pesquisa realizada na Universidade de Passo Fundo-RS,
Roberto Coletti, Alexandre Augusto Nienow, Eunice Oliveira Calvete   +2 more
doaj  

Comets, carbonaceous chondrites, and interstellar clouds: Condensation of carbon [PDF]

Comets, carbonaceous chondrites, and interstellar clouds are discussed in relation to information on interstellar dust. The formation and presence of carbon in stars, comets, and meteorites is investigated.
Field, G. B.
core   +1 more source