Results 121 to 130 of about 12,693 (212)

The Protective Effect of Conjugated Bacterial Melanin with Titanium Oxide against UV

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām, 2018
Introduction: Some Azotobacter species can produce melanin. Melanin protects against UV. The purpose of this study was to isolate Azotobacter with the power of producing melanin and optimize its production and the effect of its combination with titanium ...
Seyyed Ali Rezaie   +3 more
doaj  

Determinación del potencial promotor del crecimiento vegetal de Azotobacter spp. aislados de la rizósfera de malezas en cultivos de maíz (Zea mays L.)

open access: yesScientia Agropecuaria, 2015
Los fertilizantes químicos representan entre 20% y 30% de los costos de producción de un cultivo, utilizados correctamente incrementan la productividad y rentabilidad; sin embargo, cada año aumenta la cantidad de fertilizantes por aplicar, debido a la ...
Luis H. León, Luis M. Rojas
doaj  

Genetic Determinants of Ammonium Excretion in nifL Mutants of Azotobacter vinelandii. [PDF]

open access: yesAppl Environ Microbiol, 2022
Mus F   +6 more
europepmc   +1 more source

Exobiology and the search for biological signatures on Mars [PDF]

open access: yes
In preparation for a Mars Rover/Sample return mission, the mission goals and objectives must be identified. One of the most important objectives must address exobiology and the question of the possibility of the origin and evolution of life on Mars.
Mancinelli, Rocco L.   +1 more
core   +1 more source

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