Results 11 to 20 of about 34,270 (186)

Reproductive colonization of land by frogs: Embryos and larvae excrete urea to avoid ammonia toxicity. [PDF]

open access: yesEcol Evol, 2022
Frogs have evolved terrestrial eggs many times, offering an excellent opportunity to assess traits that may facilitate aquatic‐to‐terrestrial transitions. Our results suggest the importance of physiological adaptations and physiological plasticity during early life stages, specifically the early onset of urea excretion, its upregulation under dry ...
Méndez-Narváez J, Warkentin KM.
europepmc   +2 more sources

Assessment of genetically modified maize MON 89034 × 1507 × MON 88017 × 59122 and 8 out of 10 of its subcombinations for renewal authorisation under Regulation (EC) No 1829/2003 (dossier GMFF-2022-9170). [PDF]

open access: yesEFSA J
Abstract Following the joint submission of dossier GMFF‐2022‐9170 under Regulation (EC) No 1829/2003 from Bayer Agriculture B.V. and Corteva Agriscience Belgium B.V., the Panel on genetically modified organisms of the European Food Safety Authority was asked to deliver a scientific risk assessment on the data submitted in the context of the renewal of ...
EFSA Panel on Genetically Modified Organisms (GMO)   +21 more
europepmc   +2 more sources

Cuerpos de cobre: Extractivismo en Chuquicamata, Chile

open access: yesThe Journal of Latin American and Caribbean Anthropology, Volume 26, Issue 2, Page 200-218, June 2021., 2021
Resumen ¿Qué extraen y qué producen los extractivismos? El presente artículo intenta responder a esta pregunta analizando críticamente, la relación entre cuerpos, trabajo y mi‐nería principalmente bajo el modelo neoliberal chileno, en la mina estatal de cobre a tajo abierto más grande del planeta: Chuquicamata.
Marina Weinberg
wiley   +1 more source

Frugivory underpins the nitrogen cycle

open access: yesFunctional Ecology, Volume 35, Issue 2, Page 357-368, February 2021., 2021
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Tropical rainforests are populated by large frugivores that feed upon fruit‐producing woody species, yet their role in regulating the cycle of globally important biogeochemical elements such as nitrogen is still unknown.
Nacho Villar   +7 more
wiley   +1 more source

CRECIMIENTO Y ACUMULACIÓN DE NO3- EN LECHUGA HIDROPÓNICA CON RELACIONES NITRATO/AMONIO EN DOS ESTACIONES DE CULTIVO

open access: yesRevista Fitotecnia Mexicana, 2019
La lechuga (Lactuca sativa L.) es una hortaliza de hoja que en México genera un importante ingreso económico; sin embargo, los altos niveles de nitratos (NO3-)  pueden ocasionar problemas de salud, ya que generan compuestos carcinogénicos.
Ana Y. Lara-Izaguirre   +6 more
semanticscholar   +1 more source

TROCAS GASOSAS E EFICIÊNCIA FOTOQUÍMICA DO GERGELIM SOB ESTRESSE SALINO E ADUBAÇÃO COM NITRATO-AMÔNIO

open access: yesIrriga, 2018
TROCAS GASOSAS E EFICIÊNCIA FOTOQUÍMICA DO GERGELIM SOB ESTRESSE SALINO E ADUBAÇÃO COM NITRATO-AMÔNIO     ADAAN SUDÁRIO DIAS1; GEOVANI SOARES DE LIMA2; HANS RAJ GHEYI3; REGINALDO GOMES NOBRE4; PEDRO DANTAS FERNANDES5 E FRANCISCO ALVES DA SILVA6 ...
A. S. Dias   +5 more
semanticscholar   +1 more source

Acumulação de silício em arroz em diferentes condições de pH da rizosfera Silicon accumulation in rice in different rhizosphere pH conditions

open access: yesRevista Brasileira de Ciência do Solo, 2007
A quantidade de Si acumulada pelas plantas depende do teor de Si disponível, e este, do pH do solo. É possível que a absorção e acumulação de Si em gramíneas possam estar associadas ao pH rizosférico.
Lilian Aparecida de Oliveira   +2 more
doaj   +1 more source

OPTIMIZACIÓN DE LA REMOCIÓN SIMULTÁNEA DE NITRATO, NITRITO, AMONIO Y FOSFATO DE AGUAS RESIDUALES MUNICIPALES

open access: yesRevista de la Sociedad Química del Perú, 2019
El presente estudio evalúa la capacidad de remoción del biochar de bagazo de caña de azúcar para nitrato, nitrito, amonio y fosfato presentes en aguas residuales municipales; asimismo, se determinó la dosis óptima (mg/ml) de biochar en la remoción ...
Jerson Chuquimboques Marrero   +2 more
semanticscholar   +1 more source

Perda de nitrogênio pela Brachiaria decumbens após a antese: relação com a umidade do solo Nitrogen loss through Brachiaria decumbens after anthesis stage: relation with soil moisture

open access: yesCiência Rural, 2008
Com o objetivo de avaliar a perda de N por plantas de Brachiaria decumbens no estádio da pós-antese relacionada com a umidade do solo, realizou-se um experimento em casa-de-vegetação, em delineamento inteiramente casualizado, com três tratamentos e seis ...
Henrique Coutinho Junqueira Franco   +4 more
doaj   +1 more source

Lixiviação de nitrato e amônio em Latossolo Vermelho distroférrico

open access: yesRevista Brasileira de Ciências Agrárias, 2019
Nitrogen an important nutrient required by plants can undergo the leaching process and thereby contaminate the water table and water courses. Thus, the objective of this work was to evaluate the dynamics of NO3- and NH4+ leaching in columns of deformed ...
C. Lisboa   +5 more
semanticscholar   +1 more source

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